Ur/Web: src/c/urweb.c annotate

annotate src/c/urweb.c @ 2303:42079884e34a

Add read locks around time read in store.

author	Ziv Scully <ziv@mit.edu>
date	Fri, 20 Nov 2015 11:51:14 -0500
parents	ace43b90b388
children	6fb9232ade99

rev	line source
adamc@1268	1 #include "config.h"
adamc@1268	2
adamc@117	3 #include <stdlib.h>
adamc@102	4 #include <stdio.h>
adamc@117	5 #include <string.h>
adamc@457	6 #include <strings.h>
adamc@106	7 #include <ctype.h>
adamc@167	8 #include <setjmp.h>
adamc@167	9 #include <stdarg.h>
adamc@682	10 #include <assert.h>
adamc@741	11 #include <ctype.h>
adamc@1114	12 #include <limits.h>
adamc@1113	13 #include <stdint.h>
adamc@1094	14 #include <sys/types.h>
adamc@1094	15 #include <sys/socket.h>
adam@1397	16 #include <openssl/des.h>
adam@1486	17 #include <openssl/rand.h>
adam@1374	18 #include <time.h>
adam@1571	19 #include <math.h>
adamc@102	20
adamc@667	21 #include <pthread.h>
adamc@667	22
adamc@102	23 #include "types.h"
adamc@102	24
ziv@2234	25 #include "uthash.h"
ziv@2234	26
adam@1431	27 uw_unit uw_unit_v = 0;
adamc@102	28
adamc@667	29
adamc@667	30 // Socket extras
adamc@667	31
adamc@863	32 int uw_really_send(int sock, const void *buf, ssize_t len) {
adamc@667	33 while (len > 0) {
adamc@856	34 ssize_t n = send(sock, buf, len, 0);
adamc@856	35
adamc@856	36 if (n < 0)
adamc@856	37 return n;
adamc@856	38
adamc@856	39 buf += n;
adamc@856	40 len -= n;
adamc@856	41 }
adamc@856	42
adamc@856	43 return 0;
adamc@856	44 }
adamc@856	45
adamc@856	46 int uw_really_write(int fd, const void *buf, size_t len) {
adamc@856	47 while (len > 0) {
adamc@856	48 ssize_t n = write(fd, buf, len);
adamc@667	49
adamc@667	50 if (n < 0)
adamc@667	51 return n;
adamc@667	52
adamc@667	53 buf += n;
adamc@667	54 len -= n;
adamc@667	55 }
adamc@667	56
adamc@667	57 return 0;
adamc@667	58 }
adamc@667	59
adamc@667	60
adamc@667	61 // Buffers
adamc@667	62
adam@1369	63 void uw_buffer_init(size_t max, uw_buffer *b, size_t s) {
adamc@1113	64 b->max = max;
adamc@667	65 b->front = b->start = malloc(s);
adamc@667	66 b->back = b->front + s;
adamc@667	67 }
adamc@667	68
adam@1369	69 void uw_buffer_free(uw_buffer *b) {
adamc@667	70 free(b->start);
adamc@667	71 }
adamc@667	72
adam@1369	73 void uw_buffer_reset(uw_buffer *b) {
adamc@667	74 b->front = b->start;
ziv@2262	75 if (b->front != b->back) {
ziv@2262	76 *b->front = 0;
ziv@2262	77 }
adamc@667	78 }
adamc@667	79
adam@1369	80 int uw_buffer_check(uw_buffer *b, size_t extra) {
adamc@667	81 if (b->back - b->front < extra) {
adamc@667	82 size_t desired = b->front - b->start + extra, next;
adamc@667	83 char *new_heap;
adamc@667	84
adamc@667	85 next = b->back - b->start;
adamc@667	86 if (next == 0)
adamc@667	87 next = 1;
adamc@667	88 for (; next < desired; next *= 2);
adamc@667	89
adamc@1134	90 if (next > b->max) {
adamc@1113	91 if (desired <= b->max)
adamc@1113	92 next = desired;
adamc@1113	93 else
adamc@1113	94 return 1;
adamc@1134	95 }
adamc@1113	96
adamc@667	97 new_heap = realloc(b->start, next);
adamc@667	98 b->front = new_heap + (b->front - b->start);
adamc@667	99 b->back = new_heap + next;
adamc@667	100 b->start = new_heap;
adamc@667	101 }
adamc@1113	102
adamc@1113	103 return 0;
adamc@1113	104 }
adamc@1113	105
adamc@1113	106 __attribute__((noreturn)) void uw_error(uw_context, failure_kind, const char *, ...);
adamc@1113	107
adam@1369	108 static void ctx_uw_buffer_check(uw_context ctx, const char kind, uw_buffer b, size_t extra) {
adam@1369	109 if (uw_buffer_check(b, extra))
adamc@1113	110 uw_error(ctx, FATAL, "Memory limit exceeded (%s)", kind);
adamc@667	111 }
adamc@667	112
adam@1369	113 size_t uw_buffer_used(uw_buffer *b) {
adamc@667	114 return b->front - b->start;
adamc@667	115 }
adamc@667	116
adam@1369	117 size_t uw_buffer_avail(uw_buffer *b) {
adamc@667	118 return b->back - b->start;
adamc@667	119 }
adamc@667	120
adam@1369	121 int uw_buffer_append(uw_buffer b, const char s, size_t len) {
adam@1369	122 if (uw_buffer_check(b, len+1))
adamc@1113	123 return 1;
adamc@1113	124
adamc@1113	125 memcpy(b->front, s, len);
adamc@1113	126 b->front += len;
adamc@1113	127 *b->front = 0;
adamc@1113	128
adamc@1113	129 return 0;
adamc@1113	130 }
adamc@1113	131
adam@1369	132 static void ctx_uw_buffer_append(uw_context ctx, const char kind, uw_buffer b, const char *s, size_t len) {
adam@1369	133 ctx_uw_buffer_check(ctx, kind, b, len+1);
adamc@1113	134
adamc@668	135 memcpy(b->front, s, len);
adamc@668	136 b->front += len;
adamc@672	137 *b->front = 0;
adamc@668	138 }
adamc@667	139
adamc@668	140
adamc@672	141 // Persistent state types
adamc@667	142
adamc@667	143 typedef enum { UNUSED, USED } usage;
adamc@667	144
adamc@667	145 typedef struct client {
adamc@682	146 unsigned id;
adamc@667	147 usage mode;
adamc@682	148 int pass;
adamc@682	149 struct client *next;
adamc@689	150 pthread_mutex_t lock, pull_lock;
adam@1369	151 uw_buffer msgs;
adamc@682	152 int sock;
adamc@863	153 int (send)(int sockfd, const void buf, ssize_t len);
adamc@863	154 int (*close)(int fd);
adamc@682	155 time_t last_contact;
adamc@682	156 unsigned n_channels;
adamc@685	157 unsigned refcount;
adamc@1121	158 void *data;
adamc@667	159 } client;
adamc@667	160
adamc@672	161
adamc@672	162 // Persistent client state
adamc@672	163
adamc@682	164 static client *clients, clients_free, *clients_used;
adamc@682	165 static unsigned n_clients;
adamc@667	166
adam@1707	167 static pthread_mutex_t clients_mutex = PTHREAD_MUTEX_INITIALIZER;
adamc@1113	168 size_t uw_messages_max = SIZE_MAX;
adamc@1113	169 size_t uw_clients_max = SIZE_MAX;
adamc@1113	170
adamc@1121	171 void *uw_init_client_data();
adamc@1121	172 void uw_free_client_data(void *);
adamc@1121	173 void uw_copy_client_data(void dst, void src);
adamc@1121	174
adam@2104	175 static uw_Basis_int my_rand() {
adam@2105	176 int ret, r = RAND_bytes((unsigned char *)&ret, sizeof ret);
adam@2104	177 if (r)
adam@2105	178 return abs(ret);
adam@2104	179 else
adam@2104	180 return -1;
adam@2104	181 }
adam@2104	182
adamc@682	183 static client *new_client() {
adamc@667	184 client *c;
adamc@667	185
adamc@667	186 pthread_mutex_lock(&clients_mutex);
adamc@667	187
adamc@667	188 if (clients_free) {
adamc@667	189 c = clients_free;
adamc@682	190 clients_free = clients_free->next;
adamc@667	191 }
adam@1672	192 else if (n_clients >= uw_clients_max) {
adam@1672	193 pthread_mutex_unlock(&clients_mutex);
adamc@1113	194 return NULL;
adam@1672	195 } else {
adamc@667	196 ++n_clients;
adamc@667	197 clients = realloc(clients, sizeof(client) * n_clients);
adamc@667	198 c = malloc(sizeof(client));
adamc@667	199 c->id = n_clients-1;
adamc@682	200 pthread_mutex_init(&c->lock, NULL);
adamc@689	201 pthread_mutex_init(&c->pull_lock, NULL);
adam@1369	202 uw_buffer_init(uw_messages_max, &c->msgs, 0);
adamc@667	203 clients[n_clients-1] = c;
adamc@667	204 }
adamc@667	205
adamc@682	206 pthread_mutex_lock(&c->lock);
adamc@667	207 c->mode = USED;
adam@2104	208 c->pass = my_rand();
adamc@682	209 c->sock = -1;
adamc@682	210 c->last_contact = time(NULL);
adam@1369	211 uw_buffer_reset(&c->msgs);
adamc@682	212 c->n_channels = 0;
adamc@685	213 c->refcount = 0;
adamc@1121	214 c->data = uw_init_client_data();
adamc@682	215 pthread_mutex_unlock(&c->lock);
adamc@682	216
adamc@682	217 c->next = clients_used;
adamc@682	218 clients_used = c;
adamc@667	219
adamc@667	220 pthread_mutex_unlock(&clients_mutex);
adamc@667	221
adamc@667	222 return c;
adamc@667	223 }
adamc@667	224
adamc@685	225 static void use_client(client *c) {
adamc@685	226 pthread_mutex_lock(&c->lock);
adamc@685	227 ++c->refcount;
adamc@685	228 pthread_mutex_unlock(&c->lock);
adamc@689	229 pthread_mutex_lock(&c->pull_lock);
adamc@685	230 }
adamc@685	231
adamc@685	232 static void release_client(client *c) {
adamc@689	233 pthread_mutex_unlock(&c->pull_lock);
adamc@685	234 pthread_mutex_lock(&c->lock);
adamc@685	235 --c->refcount;
adamc@685	236 pthread_mutex_unlock(&c->lock);
adamc@685	237 }
adamc@685	238
adamc@856	239 static const char begin_msgs[] = "Content-type: text/plain\r\n\r\n";
adam@1707	240 static pthread_t pruning_thread;
adam@1707	241 static int pruning_thread_initialized = 0;
adamc@667	242
adamc@682	243 static client *find_client(unsigned id) {
adamc@667	244 client *c;
adam@1708	245 int i_am_pruner = pruning_thread_initialized && pthread_equal(pruning_thread, pthread_self());
adam@1708	246
adam@1708	247 if (!i_am_pruner) pthread_mutex_lock(&clients_mutex);
adamc@667	248
adamc@667	249 if (id >= n_clients) {
adam@1708	250 if (!i_am_pruner) pthread_mutex_unlock(&clients_mutex);
adamc@668	251 return NULL;
adamc@667	252 }
adamc@667	253
adamc@667	254 c = clients[id];
adamc@667	255
adam@1708	256 if (!i_am_pruner) pthread_mutex_unlock(&clients_mutex);
adamc@668	257 return c;
adamc@668	258 }
adamc@668	259
adamc@856	260 static char *on_success = "HTTP/1.1 200 OK\r\n";
adam@1409	261 static char *on_redirect = "HTTP/1.1 303 See Other\r\n";
adamc@856	262
adamc@856	263 void uw_set_on_success(char *s) {
adamc@856	264 on_success = s;
adamc@856	265 }
adamc@856	266
adam@1552	267 static void chastise(int (send)(int sockfd, const void buf, ssize_t len), int sock) {
adam@1552	268 send(sock, on_success, strlen(on_success));
adam@1552	269 send(sock, begin_msgs, sizeof(begin_msgs) - 1);
adam@1552	270 send(sock, "R", 1);
adam@1552	271 close(sock);
adam@1552	272 }
adam@1552	273
adamc@863	274 void uw_client_connect(unsigned id, int pass, int sock,
adamc@863	275 int (send)(int sockfd, const void buf, ssize_t len),
adamc@864	276 int (*close)(int fd),
adamc@864	277 void *logger_data, uw_logger log_error) {
adamc@682	278 client *c = find_client(id);
adamc@668	279
adamc@668	280 if (c == NULL) {
adam@1552	281 chastise(send, sock);
adamc@864	282 log_error(logger_data, "Out-of-bounds client request (%u)\n", id);
adamc@667	283 return;
adamc@667	284 }
adamc@667	285
adamc@682	286 pthread_mutex_lock(&c->lock);
adamc@671	287
adamc@682	288 if (c->mode != USED) {
adamc@682	289 pthread_mutex_unlock(&c->lock);
adam@1552	290 chastise(send, sock);
adamc@864	291 log_error(logger_data, "Client request for unused slot (%u)\n", id);
adamc@667	292 return;
adamc@667	293 }
adamc@667	294
adamc@682	295 if (pass != c->pass) {
adamc@682	296 pthread_mutex_unlock(&c->lock);
adam@1552	297 chastise(send, sock);
adamc@864	298 log_error(logger_data, "Wrong client password (%u, %d)\n", id, pass);
adamc@682	299 return;
adamc@667	300 }
adamc@667	301
adamc@682	302 if (c->sock != -1) {
adamc@863	303 c->close(c->sock);
adamc@682	304 c->sock = -1;
adamc@682	305 }
adamc@667	306
adamc@682	307 c->last_contact = time(NULL);
adamc@682	308
adam@1369	309 if (uw_buffer_used(&c->msgs) > 0) {
adamc@863	310 send(sock, on_success, strlen(on_success));
adamc@863	311 send(sock, begin_msgs, sizeof(begin_msgs) - 1);
adam@1369	312 send(sock, c->msgs.start, uw_buffer_used(&c->msgs));
adam@1369	313 uw_buffer_reset(&c->msgs);
adamc@667	314 close(sock);
adamc@667	315 }
adamc@863	316 else {
adamc@682	317 c->sock = sock;
adamc@863	318 c->send = send;
adamc@863	319 c->close = close;
adamc@863	320 }
adamc@667	321
adamc@682	322 pthread_mutex_unlock(&c->lock);
adamc@667	323 }
adamc@667	324
adamc@682	325 static void free_client(client *c) {
adamc@682	326 c->mode = UNUSED;
adamc@682	327 c->pass = -1;
adamc@667	328
adamc@682	329 c->next = clients_free;
adamc@682	330 clients_free = c;
adamc@667	331 }
adamc@667	332
adamc@682	333 static uw_Basis_channel new_channel(client *c) {
adamc@682	334 uw_Basis_channel ch = {c->id, c->n_channels++};
adamc@668	335 return ch;
adamc@668	336 }
adamc@668	337
adam@1447	338 static void client_send(client c, uw_buffer msg, const char *script, int script_len) {
adamc@685	339 pthread_mutex_lock(&c->lock);
adamc@671	340
adamc@682	341 if (c->sock != -1) {
adamc@863	342 c->send(c->sock, on_success, strlen(on_success));
adamc@863	343 c->send(c->sock, begin_msgs, sizeof(begin_msgs) - 1);
adam@1447	344 if (script_len > 0) {
adam@1447	345 c->send(c->sock, "E\n", 2);
adam@1447	346 c->send(c->sock, script, script_len);
adam@1447	347 c->send(c->sock, "\n", 1);
adam@1447	348 }
adam@1369	349 c->send(c->sock, msg->start, uw_buffer_used(msg));
adamc@863	350 c->close(c->sock);
adamc@682	351 c->sock = -1;
adam@1665	352 } else if (uw_buffer_append(&c->msgs, msg->start, uw_buffer_used(msg)))
adamc@1113	353 fprintf(stderr, "Client message buffer size exceeded");
adamc@671	354
adamc@685	355 pthread_mutex_unlock(&c->lock);
adamc@668	356 }
adamc@668	357
adamc@668	358
adamc@668	359 // Global entry points
adamc@668	360
adamc@1164	361 extern void uw_global_custom();
adamc@1104	362 extern void uw_init_crypto();
adamc@1104	363
adamc@668	364 void uw_global_init() {
adamc@668	365 clients = malloc(0);
adamc@1104	366
adamc@1164	367 uw_global_custom();
adamc@1104	368 uw_init_crypto();
ziv@2288	369
ziv@2288	370 // Fast non-cryptographic strength randomness for Sqlcache.
ziv@2288	371 srandom(clock());
adamc@1094	372 }
adamc@1094	373
adamc@1094	374 void uw_app_init(uw_app *app) {
adamc@1094	375 app->client_init();
adamc@668	376 }
adamc@668	377
adam@1332	378 int uw_time = 0, uw_time_max = 0, uw_min_heap = 0;
adamc@1114	379
adamc@668	380
adamc@667	381 // Single-request state
adamc@667	382
adamc@323	383 typedef struct regions {
adamc@323	384 struct regions *next;
adamc@323	385 } regions;
adamc@323	386
adamc@425	387 typedef struct {
adamc@425	388 void (func)(void);
adamc@425	389 void *arg;
adamc@425	390 } cleanup;
adamc@425	391
adamc@671	392 typedef struct {
adamc@682	393 unsigned client;
adam@1369	394 uw_buffer msgs;
adamc@682	395 } delta;
adamc@671	396
adamc@737	397 typedef enum {
adamc@759	398 UNSET, NORMAL, FIL, SUBFORM, SUBFORMS, ENTRY
adamc@737	399 } input_kind;
adamc@737	400
adamc@756	401 typedef struct input {
adamc@737	402 input_kind kind;
adamc@737	403 union {
adamc@737	404 char *normal;
adamc@739	405 uw_Basis_file file;
adamc@756	406 struct {
adamc@759	407 struct input fields, parent;
adamc@756	408 } subform;
adamc@759	409 struct {
adamc@759	410 struct input entries, parent;
adamc@759	411 } subforms;
adamc@759	412 struct {
adamc@759	413 struct input fields, next, *parent;
adamc@759	414 } entry;
adamc@737	415 } data;
adamc@737	416 } input;
adamc@737	417
adamc@771	418 typedef struct {
adamc@771	419 void *data;
adam@1327	420 uw_callback commit, rollback;
adam@1327	421 uw_callback_with_retry free;
adamc@771	422 } transactional;
adamc@771	423
adamc@1061	424 typedef struct {
adamc@1061	425 char *name;
adamc@1061	426 void *data;
adamc@1061	427 void (free)(void);
adamc@1061	428 } global;
adamc@1061	429
ziv@2285	430 typedef struct uw_Sqlcache_Update {
ziv@2282	431 uw_Sqlcache_Cache *cache;
ziv@2282	432 char **keys;
ziv@2285	433 uw_Sqlcache_Value *value;
ziv@2285	434 struct uw_Sqlcache_Update *next;
ziv@2285	435 } uw_Sqlcache_Update;
ziv@2282	436
ziv@2288	437 typedef struct uw_Sqlcache_Unlock {
ziv@2288	438 pthread_rwlock_t *lock;
ziv@2288	439 struct uw_Sqlcache_Unlock *next;
ziv@2288	440 } uw_Sqlcache_Unlock;
ziv@2288	441
adamc@311	442 struct uw_context {
adamc@1094	443 uw_app *app;
adam@1446	444 int id;
adamc@1094	445
adamc@854	446 char (get_header)(void , const char );
adamc@854	447 void *get_header_data;
adamc@457	448
adam@1799	449 char (get_env)(void , const char );
adam@1799	450 void *get_env_data;
adam@1799	451
adam@1369	452 uw_buffer outHeaders, page, heap, script;
adam@1451	453 int allowed_to_return_indirectly, returning_indirectly;
adamc@759	454 input inputs, subinputs, *cur_container;
adamc@1094	455 size_t sz_inputs, n_subinputs, used_subinputs;
adamc@167	456
adam@1446	457 unsigned long long source_count;
adamc@562	458
adamc@272	459 void *db;
adam@1931	460 int transaction_started;
adamc@272	461
adamc@167	462 jmp_buf jmp_buf;
adamc@167	463
adamc@323	464 regions *regions;
adamc@323	465
adamc@425	466 cleanup cleanup, cleanup_front, *cleanup_back;
adamc@425	467
adamc@1094	468 const char *script_header;
adamc@643	469
adam@2056	470 int needs_push, needs_sig, could_write_db, at_most_one_query;
adamc@693	471
adamc@682	472 size_t n_deltas, used_deltas;
adamc@682	473 delta *deltas;
adamc@671	474
adamc@682	475 client *client;
adamc@682	476
adamc@771	477 transactional *transactionals;
adamc@771	478 size_t n_transactionals, used_transactionals;
adamc@771	479
adamc@1061	480 global *globals;
adamc@1061	481 size_t n_globals;
adamc@1061	482
adamc@1066	483 char *current_url;
adamc@1066	484
adamc@1114	485 int deadline;
adamc@1114	486
adamc@1121	487 void *client_data;
adamc@1121	488
grrwlf@1997	489 uw_loggers *loggers;
adam@1334	490
adam@1386	491 int isPost, hasPostBody;
adam@1347	492 uw_Basis_postBody postBody;
adam@1370	493 uw_Basis_string queryString;
adam@1347	494
adam@1556	495 unsigned nextId;
adam@1556	496
adam@1782	497 int amInitializing;
adam@1782	498
adamc@167	499 char error_message[ERROR_BUF_LEN];
adam@1877	500
adam@1877	501 int usedSig, needsResig;
adam@1949	502
adam@1949	503 char *output_buffer;
adam@1949	504 size_t output_buffer_size;
adam@2073	505
ziv@2281	506 // Sqlcache.
adam@2298	507 int numRecording, recordingCapacity;
adam@2298	508 int *recordingOffsets;
ziv@2285	509 uw_Sqlcache_Update *cacheUpdate;
ziv@2285	510 uw_Sqlcache_Update *cacheUpdateTail;
ziv@2288	511 uw_Sqlcache_Unlock *cacheUnlock;
ziv@2220	512
adam@2073	513 int remoteSock;
adamc@117	514 };
adamc@117	515
adamc@1113	516 size_t uw_headers_max = SIZE_MAX;
adamc@1113	517 size_t uw_page_max = SIZE_MAX;
adamc@1113	518 size_t uw_heap_max = SIZE_MAX;
adamc@1113	519 size_t uw_script_max = SIZE_MAX;
adamc@1113	520
grrwlf@1997	521 uw_context uw_init(int id, uw_loggers *lg) {
ziv@2285	522 puts("Initializing");
adamc@311	523 uw_context ctx = malloc(sizeof(struct uw_context));
adamc@136	524
adamc@1094	525 ctx->app = NULL;
adam@1446	526 ctx->id = id;
adamc@1094	527
adamc@854	528 ctx->get_header = NULL;
adamc@854	529 ctx->get_header_data = NULL;
adamc@457	530
adam@1799	531 ctx->get_env = NULL;
adam@1799	532 ctx->get_env_data = NULL;
adam@1799	533
adam@1413	534 uw_buffer_init(uw_headers_max, &ctx->outHeaders, 1);
adam@1413	535 ctx->outHeaders.start[0] = 0;
adam@1413	536 uw_buffer_init(uw_page_max, &ctx->page, 1);
adam@1413	537 ctx->page.start[0] = 0;
adam@1451	538 ctx->allowed_to_return_indirectly = ctx->returning_indirectly = 0;
adam@1369	539 uw_buffer_init(uw_heap_max, &ctx->heap, uw_min_heap);
adam@1369	540 uw_buffer_init(uw_script_max, &ctx->script, 1);
adamc@667	541 ctx->script.start[0] = 0;
adamc@136	542
adamc@1094	543 ctx->inputs = malloc(0);
adamc@759	544 ctx->cur_container = NULL;
adamc@756	545 ctx->subinputs = malloc(0);
adamc@1094	546 ctx->sz_inputs = ctx->n_subinputs = ctx->used_subinputs = 0;
adamc@144	547
adamc@272	548 ctx->db = NULL;
adam@1931	549 ctx->transaction_started = 0;
adamc@272	550
adamc@323	551 ctx->regions = NULL;
adamc@323	552
adamc@425	553 ctx->cleanup_front = ctx->cleanup_back = ctx->cleanup = malloc(0);
adamc@425	554
adamc@643	555 ctx->script_header = "";
adamc@693	556 ctx->needs_push = 0;
adamc@736	557 ctx->needs_sig = 0;
adam@1936	558 ctx->could_write_db = 1;
adam@2056	559 ctx->at_most_one_query = 0;
adamc@1104	560
adamc@565	561 ctx->source_count = 0;
adamc@562	562
adamc@682	563 ctx->n_deltas = ctx->used_deltas = 0;
adamc@671	564 ctx->deltas = malloc(0);
adamc@671	565
adamc@700	566 ctx->client = NULL;
adamc@700	567
adamc@700	568 ctx->error_message[0] = 0;
adamc@700	569
adamc@771	570 ctx->transactionals = malloc(0);
adamc@771	571 ctx->n_transactionals = ctx->used_transactionals = 0;
adamc@771	572
adamc@1061	573 ctx->globals = malloc(0);
adamc@1061	574 ctx->n_globals = 0;
adamc@1061	575
adamc@1066	576 ctx->current_url = "";
adamc@1066	577
adamc@1114	578 ctx->deadline = INT_MAX;
adamc@1114	579
adamc@1121	580 ctx->client_data = uw_init_client_data();
adamc@1121	581
grrwlf@1997	582 ctx->loggers = lg;
adam@1334	583
adam@1386	584 ctx->isPost = ctx->hasPostBody = 0;
adam@1347	585
adam@1370	586 ctx->queryString = NULL;
adam@1370	587
adam@1556	588 ctx->nextId = 0;
adam@1556	589
adam@1782	590 ctx->amInitializing = 0;
adam@1782	591
adam@1877	592 ctx->usedSig = 0;
adam@1877	593 ctx->needsResig = 0;
adam@1877	594
adam@1949	595 ctx->output_buffer = malloc(1);
adam@1949	596 ctx->output_buffer_size = 1;
adam@1949	597
ziv@2262	598 ctx->numRecording = 0;
adam@2298	599 ctx->recordingCapacity = 0;
adam@2298	600 ctx->recordingOffsets = malloc(0);
ziv@2285	601 ctx->cacheUpdate = NULL;
ziv@2285	602 ctx->cacheUpdateTail = NULL;
ziv@2204	603
adam@2073	604 ctx->remoteSock = -1;
adam@2073	605
adam@2296	606 ctx->cacheUnlock = NULL;
adam@2296	607
adamc@117	608 return ctx;
adamc@106	609 }
adamc@106	610
adamc@1113	611 size_t uw_inputs_max = SIZE_MAX;
adamc@1113	612
adamc@1121	613 uw_app *uw_get_app(uw_context ctx) {
adamc@1121	614 return ctx->app;
adamc@1121	615 }
adamc@1121	616
adamc@1113	617 int uw_set_app(uw_context ctx, uw_app *app) {
adamc@1094	618 ctx->app = app;
adamc@1094	619
adamc@1105	620 if (app && app->inputs_len > ctx->sz_inputs) {
adamc@1113	621 if (app->inputs_len > uw_inputs_max)
adamc@1113	622 return 1;
adamc@1113	623
adamc@1094	624 ctx->sz_inputs = app->inputs_len;
adamc@1094	625 ctx->inputs = realloc(ctx->inputs, ctx->sz_inputs * sizeof(input));
adamc@1094	626 memset(ctx->inputs, 0, ctx->sz_inputs * sizeof(input));
adamc@1094	627 }
adamc@1134	628
adamc@1134	629 return 0;
adamc@1094	630 }
adamc@1094	631
adamc@1121	632 void uw_set_client_data(uw_context ctx, void *data) {
adamc@1121	633 uw_copy_client_data(ctx->client_data, data);
adamc@1121	634 }
adamc@1121	635
adamc@311	636 void uw_set_db(uw_context ctx, void *db) {
adamc@272	637 ctx->db = db;
adamc@272	638 }
adamc@272	639
adamc@311	640 void *uw_get_db(uw_context ctx) {
adamc@272	641 return ctx->db;
adamc@272	642 }
adamc@272	643
grrwlf@1997	644
grrwlf@1997	645 uw_loggers* uw_get_loggers(struct uw_context *ctx) {
grrwlf@1997	646 return ctx->loggers;
grrwlf@1997	647 }
grrwlf@1997	648
adamc@311	649 void uw_free(uw_context ctx) {
adamc@671	650 size_t i;
adamc@671	651
adam@1369	652 uw_buffer_free(&ctx->outHeaders);
adam@1369	653 uw_buffer_free(&ctx->script);
adam@1369	654 uw_buffer_free(&ctx->page);
adam@1369	655 uw_buffer_free(&ctx->heap);
adamc@144	656 free(ctx->inputs);
adamc@756	657 free(ctx->subinputs);
adamc@425	658 free(ctx->cleanup);
adamc@771	659 free(ctx->transactionals);
adamc@1121	660 uw_free_client_data(ctx->client_data);
adamc@671	661
adamc@682	662 for (i = 0; i < ctx->n_deltas; ++i)
adam@1369	663 uw_buffer_free(&ctx->deltas[i].msgs);
marco-oweber@1330	664 free(ctx->deltas);
adamc@671	665
adamc@1061	666 for (i = 0; i < ctx->n_globals; ++i)
adamc@1089	667 if (ctx->globals[i].free)
adamc@1089	668 ctx->globals[i].free(ctx->globals[i].data);
marco-oweber@1330	669 free(ctx->globals);
adamc@1061	670
adam@1949	671 free(ctx->output_buffer);
adam@1949	672
adam@2298	673 free(ctx->recordingOffsets);
adam@2298	674
adamc@136	675 free(ctx);
adamc@136	676 }
adamc@136	677
adamc@562	678 void uw_reset_keep_error_message(uw_context ctx) {
adam@1369	679 uw_buffer_reset(&ctx->outHeaders);
adam@1369	680 uw_buffer_reset(&ctx->script);
adamc@667	681 ctx->script.start[0] = 0;
adam@1369	682 uw_buffer_reset(&ctx->page);
adam@1451	683 ctx->allowed_to_return_indirectly = ctx->returning_indirectly = 0;
adam@1369	684 uw_buffer_reset(&ctx->heap);
adamc@323	685 ctx->regions = NULL;
adamc@425	686 ctx->cleanup_front = ctx->cleanup;
adamc@682	687 ctx->used_deltas = 0;
adamc@682	688 ctx->client = NULL;
adamc@759	689 ctx->cur_container = NULL;
adamc@771	690 ctx->used_transactionals = 0;
adamc@1117	691 ctx->script_header = "";
adam@1370	692 ctx->queryString = NULL;
adam@1556	693 ctx->nextId = 0;
adam@1782	694 ctx->amInitializing = 0;
adam@1877	695 ctx->usedSig = 0;
adam@1877	696 ctx->needsResig = 0;
adam@2073	697 ctx->remoteSock = -1;
adam@2298	698 ctx->numRecording = 0;
adamc@167	699 }
adamc@167	700
adamc@562	701 void uw_reset_keep_request(uw_context ctx) {
adamc@562	702 uw_reset_keep_error_message(ctx);
adamc@562	703 ctx->error_message[0] = 0;
adamc@167	704 }
adamc@167	705
adamc@311	706 void uw_reset(uw_context ctx) {
adamc@311	707 uw_reset_keep_request(ctx);
adamc@1105	708 if (ctx->app)
adamc@1105	709 memset(ctx->inputs, 0, ctx->app->inputs_len * sizeof(input));
adamc@756	710 memset(ctx->subinputs, 0, ctx->n_subinputs * sizeof(input));
adam@1461	711 ctx->used_subinputs = ctx->hasPostBody = ctx->isPost = 0;
adam@1943	712 ctx->transaction_started = 0;
adamc@144	713 }
adamc@144	714
adamc@311	715 failure_kind uw_begin_init(uw_context ctx) {
adamc@272	716 int r = setjmp(ctx->jmp_buf);
adamc@272	717
adamc@1105	718 if (r == 0 && ctx->app)
adamc@1094	719 ctx->app->db_init(ctx);
adamc@272	720
adamc@272	721 return r;
adamc@272	722 }
adamc@272	723
adamc@1118	724 void uw_close(uw_context ctx) {
adamc@1118	725 ctx->app->db_close(ctx);
adamc@1118	726 }
adamc@1118	727
adam@1446	728 uw_Basis_string uw_Basis_requestHeader(uw_context ctx, uw_Basis_string h) {
adam@1446	729 return ctx->get_header(ctx->get_header_data, h);
adam@1446	730 }
adam@1446	731
adamc@854	732 void uw_set_headers(uw_context ctx, char (get_header)(void , const char ), void *get_header_data) {
adamc@854	733 ctx->get_header = get_header;
adamc@854	734 ctx->get_header_data = get_header_data;
adamc@742	735 }
adamc@742	736
adam@1799	737 void uw_set_env(uw_context ctx, char (get_env)(void , const char ), void *get_env_data) {
adam@1799	738 ctx->get_env = get_env;
adam@1799	739 ctx->get_env_data = get_env_data;
adam@1799	740 }
adam@1799	741
adamc@801	742 static void uw_set_error(uw_context ctx, const char *fmt, ...) {
adamc@801	743 va_list ap;
adamc@801	744 va_start(ap, fmt);
adamc@801	745
adamc@801	746 vsnprintf(ctx->error_message, ERROR_BUF_LEN, fmt, ap);
adamc@801	747 }
adamc@801	748
adamc@1131	749 int uw_has_error(uw_context ctx) {
adamc@1131	750 return ctx->error_message[0] != 0;
adamc@1131	751 }
adamc@1131	752
adamc@311	753 __attribute__((noreturn)) void uw_error(uw_context ctx, failure_kind fk, const char *fmt, ...) {
adamc@425	754 cleanup *cl;
adamc@425	755
adamc@167	756 va_list ap;
adamc@167	757 va_start(ap, fmt);
adamc@167	758
adamc@167	759 vsnprintf(ctx->error_message, ERROR_BUF_LEN, fmt, ap);
adamc@167	760
adamc@425	761 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adamc@425	762 cl->func(cl->arg);
adamc@425	763
adamc@425	764 ctx->cleanup_front = ctx->cleanup;
adamc@425	765
adamc@190	766 longjmp(ctx->jmp_buf, fk);
adamc@167	767 }
adamc@167	768
adamc@1113	769 size_t uw_cleanup_max = SIZE_MAX;
adamc@1113	770
adamc@425	771 void uw_push_cleanup(uw_context ctx, void (func)(void ), void *arg) {
adamc@425	772 if (ctx->cleanup_front >= ctx->cleanup_back) {
adamc@425	773 int len = ctx->cleanup_back - ctx->cleanup, newLen;
adamc@425	774 if (len == 0)
adamc@425	775 newLen = 1;
adamc@425	776 else
adamc@428	777 newLen = len * 2;
adamc@1113	778
adamc@1134	779 if (newLen > uw_cleanup_max) {
adamc@1113	780 if (len+1 <= uw_cleanup_max)
adamc@1113	781 newLen = uw_cleanup_max;
adamc@1113	782 else
adamc@1113	783 uw_error(ctx, FATAL, "Exceeded limit on number of cleanup handlers");
adamc@1134	784 }
adamc@1113	785
adamc@470	786 ctx->cleanup = realloc(ctx->cleanup, newLen * sizeof(cleanup));
adamc@425	787 ctx->cleanup_front = ctx->cleanup + len;
adamc@425	788 ctx->cleanup_back = ctx->cleanup + newLen;
adamc@425	789 }
adamc@425	790
adamc@425	791 ctx->cleanup_front->func = func;
adamc@425	792 ctx->cleanup_front->arg = arg;
adamc@425	793 ++ctx->cleanup_front;
adamc@425	794 }
adamc@425	795
adam@1444	796 char uw_Basis_htmlifyString(uw_context, const char );
adam@1444	797
adamc@682	798 void uw_login(uw_context ctx) {
adam@1942	799 char id_s, pass_s;
adam@1942	800
adam@1942	801 if ((id_s = uw_Basis_requestHeader(ctx, "UrWeb-Client"))
adam@1942	802 && (pass_s = uw_Basis_requestHeader(ctx, "UrWeb-Pass"))) {
adam@1942	803 unsigned id = atoi(id_s);
adam@1942	804 int pass = atoi(pass_s);
adam@1942	805 client *c = find_client(id);
adam@1942	806
adam@1942	807 if (c == NULL)
adam@1942	808 uw_error(ctx, FATAL, "Unknown client ID in HTTP headers (%s, %s)", uw_Basis_htmlifyString(ctx, id_s), uw_Basis_htmlifyString(ctx, pass_s));
adam@1942	809 else {
adamc@685	810 use_client(c);
adamc@682	811 ctx->client = c;
adam@1942	812
adam@1942	813 if (c->mode != USED)
adam@1942	814 uw_error(ctx, FATAL, "Stale client ID (%u) in subscription request", id);
adam@1942	815 if (c->pass != pass)
adam@1942	816 uw_error(ctx, FATAL, "Wrong client password (%u, %d) in subscription request", id, pass);
adamc@864	817 }
adam@1942	818 } else if (ctx->needs_push) {
adam@1942	819 client *c = new_client();
adam@1942	820
adam@1942	821 if (c == NULL)
adam@1942	822 uw_error(ctx, FATAL, "Limit exceeded on number of message-passing clients");
adam@1942	823
adam@1942	824 use_client(c);
adam@1942	825 uw_copy_client_data(c->data, ctx->client_data);
adam@1942	826 ctx->client = c;
adamc@682	827 }
adamc@682	828 }
adamc@682	829
adamc@671	830 failure_kind uw_begin(uw_context ctx, char *path) {
adamc@671	831 int r = setjmp(ctx->jmp_buf);
adamc@671	832
adam@1931	833 if (r == 0)
adam@1931	834 ctx->app->handle(ctx, path);
adam@1931	835
adam@1931	836 return r;
adam@1931	837 }
adam@1931	838
adam@2176	839 static void uw_try_reconnecting(uw_context ctx) {
adam@2176	840 // Hm, error starting transaction.
adam@2176	841 // Maybe the database server died but has since come back up.
adam@2176	842 // Let's try starting from scratch.
adam@2176	843 if (ctx->db) {
adam@2176	844 ctx->app->db_close(ctx);
adam@2176	845 ctx->db = NULL;
adam@2176	846 }
adam@2176	847 ctx->app->db_init(ctx);
adam@2176	848 }
adam@2176	849
adam@2177	850 void uw_try_reconnecting_and_restarting(uw_context ctx) {
adam@2177	851 uw_try_reconnecting(ctx);
adam@2178	852 uw_error(ctx, BOUNDED_RETRY, "Restarting transaction after fixing database connection");
adam@2176	853 }
adam@2176	854
adam@1931	855 void uw_ensure_transaction(uw_context ctx) {
adam@2056	856 if (!ctx->transaction_started && !ctx->at_most_one_query) {
adam@2176	857 if (!ctx->db \|\| ctx->app->db_begin(ctx, ctx->could_write_db)) {
adam@2176	858 uw_try_reconnecting(ctx);
adam@2176	859
adam@2176	860 if (ctx->app->db_begin(ctx, ctx->could_write_db))
adam@2176	861 uw_error(ctx, FATAL, "Error running SQL BEGIN");
adam@2176	862 }
adam@2176	863
adam@1931	864 ctx->transaction_started = 1;
adam@2178	865 } else if (ctx->at_most_one_query && !ctx->db)
adam@2178	866 uw_try_reconnecting(ctx);
adamc@671	867 }
adamc@671	868
adamc@772	869 uw_Basis_client uw_Basis_self(uw_context ctx) {
adamc@682	870 if (ctx->client == NULL)
adamc@682	871 uw_error(ctx, FATAL, "Call to Basis.self() from page that has only server-side code");
adamc@682	872
adamc@682	873 return ctx->client->id;
adamc@682	874 }
adamc@682	875
adamc@425	876 void uw_pop_cleanup(uw_context ctx) {
adamc@425	877 if (ctx->cleanup_front == ctx->cleanup)
adamc@425	878 uw_error(ctx, FATAL, "Attempt to pop from empty cleanup action stack");
adamc@425	879
adamc@425	880 --ctx->cleanup_front;
adamc@425	881 ctx->cleanup_front->func(ctx->cleanup_front->arg);
adamc@425	882 }
adamc@425	883
adamc@311	884 char *uw_error_message(uw_context ctx) {
adamc@167	885 return ctx->error_message;
adamc@167	886 }
adamc@167	887
adamc@1115	888 void uw_set_error_message(uw_context ctx, const char *msg) {
adamc@1115	889 strncpy(ctx->error_message, msg, sizeof(ctx->error_message));
adamc@1115	890 ctx->error_message[sizeof(ctx->error_message)-1] = 0;
adamc@1115	891 }
adamc@1115	892
adamc@759	893 static input *INP(uw_context ctx) {
adamc@759	894 if (ctx->cur_container == NULL)
adamc@759	895 return ctx->inputs;
adamc@759	896 else if (ctx->cur_container->kind == SUBFORM)
adamc@759	897 return ctx->cur_container->data.subform.fields;
adamc@759	898 else if (ctx->cur_container->kind == ENTRY)
adamc@759	899 return ctx->cur_container->data.entry.fields;
adamc@759	900 else
adamc@760	901 uw_error(ctx, FATAL, "INP: Wrong kind (%d, %p)", ctx->cur_container->kind, ctx->cur_container);
adamc@759	902 }
adamc@759	903
adamc@760	904 static void adjust_pointer(input *ptr, input old_start, input *new_start, size_t len) {
adamc@760	905 if (ptr != NULL && ptr >= old_start && *ptr < old_start + len)
adamc@760	906 *ptr += new_start - old_start;
adamc@760	907 }
adamc@760	908
adamc@760	909 static void adjust_input(input x, input old_start, input *new_start, size_t len) {
adamc@759	910 switch (x->kind) {
adamc@759	911 case SUBFORM:
adamc@760	912 adjust_pointer(&x->data.subform.fields, old_start, new_start, len);
adamc@760	913 adjust_pointer(&x->data.subform.parent, old_start, new_start, len);
adamc@759	914 break;
adamc@759	915 case SUBFORMS:
adamc@760	916 adjust_pointer(&x->data.subforms.entries, old_start, new_start, len);
adamc@760	917 adjust_pointer(&x->data.subforms.parent, old_start, new_start, len);
adamc@759	918 break;
adamc@759	919 case ENTRY:
adamc@760	920 adjust_pointer(&x->data.entry.fields, old_start, new_start, len);
adamc@760	921 adjust_pointer(&x->data.entry.next, old_start, new_start, len);
adamc@760	922 adjust_pointer(&x->data.entry.parent, old_start, new_start, len);
adamc@1134	923 break;
adamc@1134	924 default:
adamc@1134	925 break;
phurst@1981	926 }
adamc@759	927 }
adamc@759	928
adamc@1113	929 size_t uw_subinputs_max = SIZE_MAX;
adamc@1113	930
adamc@759	931 static input *check_input_space(uw_context ctx, size_t len) {
adamc@759	932 size_t i;
adamc@759	933 input *r;
adamc@759	934
adamc@759	935 if (ctx->used_subinputs + len >= ctx->n_subinputs) {
adamc@1113	936 if (ctx->used_subinputs + len > uw_subinputs_max)
adamc@1113	937 uw_error(ctx, FATAL, "Exceeded limit on number of subinputs");
adamc@1113	938
adamc@759	939 input new_subinputs = realloc(ctx->subinputs, sizeof(input) (ctx->used_subinputs + len));
adamc@759	940
adamc@760	941 if (ctx->subinputs != new_subinputs) {
adamc@760	942 for (i = 0; i < ctx->used_subinputs; ++i)
adamc@760	943 adjust_input(&new_subinputs[i], ctx->subinputs, new_subinputs, ctx->used_subinputs);
adamc@1094	944 for (i = 0; i < ctx->app->inputs_len; ++i)
adamc@760	945 adjust_input(&ctx->inputs[i], ctx->subinputs, new_subinputs, ctx->used_subinputs);
adamc@760	946
adamc@760	947 adjust_pointer(&ctx->cur_container, ctx->subinputs, new_subinputs, ctx->used_subinputs);
adamc@760	948
adamc@760	949 ctx->n_subinputs = ctx->used_subinputs + len;
adamc@760	950 ctx->subinputs = new_subinputs;
adamc@760	951 }
adamc@759	952 }
adamc@759	953
adamc@759	954 r = &ctx->subinputs[ctx->used_subinputs];
adamc@759	955
adamc@759	956 for (i = 0; i < len; ++i)
adam@1474	957 ctx->subinputs[ctx->used_subinputs++].kind = UNSET;
adamc@759	958
adamc@759	959 return r;
adamc@759	960 }
adamc@756	961
adamc@801	962 int uw_set_input(uw_context ctx, const char name, char value) {
adamc@1050	963 //printf("Input name %s\n", name);
adamc@1038	964
adamc@756	965 if (!strcasecmp(name, ".b")) {
adamc@1094	966 int n = ctx->app->input_num(value);
adamc@756	967 input *inps;
adamc@756	968
adamc@801	969 if (n < 0) {
adam@1444	970 uw_set_error(ctx, "Bad subform name %s", uw_Basis_htmlifyString(ctx, value));
adamc@801	971 return -1;
adamc@801	972 }
adamc@801	973
adamc@1094	974 if (n >= ctx->app->inputs_len) {
adam@1444	975 uw_set_error(ctx, "For subform name %s, index %d is out of range", uw_Basis_htmlifyString(ctx, value), n);
adamc@801	976 return -1;
adamc@801	977 }
adamc@756	978
adamc@1094	979 inps = check_input_space(ctx, ctx->app->inputs_len);
adamc@759	980
adamc@759	981 INP(ctx)[n].kind = SUBFORM;
adamc@759	982 INP(ctx)[n].data.subform.parent = ctx->cur_container;
adamc@759	983 INP(ctx)[n].data.subform.fields = inps;
adamc@759	984 ctx->cur_container = &INP(ctx)[n];
adamc@756	985 } else if (!strcasecmp(name, ".e")) {
adamc@756	986 input *tmp;
adamc@756	987
adamc@801	988 if (ctx->cur_container == NULL) {
adamc@801	989 uw_set_error(ctx, "Unmatched subform closer");
adamc@801	990 return -1;
adamc@801	991 }
adamc@756	992
adamc@759	993 tmp = ctx->cur_container;
adamc@759	994 switch (tmp->kind) {
adamc@759	995 case SUBFORM:
adamc@759	996 ctx->cur_container = tmp->data.subform.parent;
adamc@759	997 tmp->data.subform.parent = NULL;
adamc@759	998 break;
adamc@759	999 case SUBFORMS:
adamc@759	1000 ctx->cur_container = tmp->data.subforms.parent;
adamc@759	1001 tmp->data.subforms.parent = NULL;
adamc@759	1002 break;
adamc@759	1003 case ENTRY:
adamc@759	1004 ctx->cur_container = tmp->data.entry.parent;
adamc@759	1005 break;
adamc@759	1006 default:
adamc@801	1007 uw_set_error(ctx, "uw_set_input: Wrong kind");
adamc@801	1008 return -1;
adamc@759	1009 }
adamc@759	1010 } else if (!strcasecmp(name, ".s")) {
adamc@1094	1011 int n = ctx->app->input_num(value);
adamc@759	1012
adamc@801	1013 if (n < 0) {
adam@1444	1014 uw_set_error(ctx, "Bad subforms name %s", uw_Basis_htmlifyString(ctx, value));
adamc@801	1015 return -1;
adamc@801	1016 }
adamc@801	1017
adamc@1094	1018 if (n >= ctx->app->inputs_len) {
adam@1444	1019 uw_set_error(ctx, "For subforms name %s, index %d is out of range", uw_Basis_htmlifyString(ctx, value), n);
adamc@801	1020 return -1;
adamc@801	1021 }
adamc@759	1022
adamc@759	1023 INP(ctx)[n].kind = SUBFORMS;
adamc@759	1024 INP(ctx)[n].data.subforms.parent = ctx->cur_container;
adamc@759	1025 INP(ctx)[n].data.subforms.entries = NULL;
adamc@759	1026 ctx->cur_container = &INP(ctx)[n];
adamc@759	1027 } else if (!strcasecmp(name, ".i")) {
adamc@759	1028 input *inps;
adamc@759	1029
adamc@801	1030 if (!ctx->cur_container) {
adamc@801	1031 uw_set_error(ctx, "New entry without container");
adamc@801	1032 return -1;
adamc@801	1033 }
adamc@801	1034
adamc@801	1035 if (ctx->cur_container->kind != SUBFORMS) {
adamc@801	1036 uw_set_error(ctx, "Bad kind for entry parent");
adamc@801	1037 return -1;
adamc@801	1038 }
adamc@759	1039
adamc@1094	1040 inps = check_input_space(ctx, ctx->app->inputs_len + 1);
adamc@759	1041
adamc@759	1042 inps->kind = ENTRY;
adamc@759	1043 inps->data.entry.parent = ctx->cur_container;
adamc@759	1044 inps->data.entry.next = ctx->cur_container->data.subforms.entries;
adamc@759	1045 ctx->cur_container->data.subforms.entries = inps;
adamc@759	1046
adamc@759	1047 inps->data.entry.fields = inps+1;
adamc@759	1048 ctx->cur_container = inps;
adamc@756	1049 } else {
adamc@1094	1050 int n = ctx->app->input_num(name);
adamc@756	1051
adam@1384	1052 if (n < 0)
adam@1384	1053 return 0;
adamc@801	1054
adamc@1094	1055 if (n >= ctx->app->inputs_len) {
adam@1444	1056 uw_set_error(ctx, "For input name %s, index %d is out of range", uw_Basis_htmlifyString(ctx, name), n);
adamc@801	1057 return -1;
adamc@801	1058 }
adamc@756	1059
adamc@756	1060 INP(ctx)[n].kind = NORMAL;
adamc@756	1061 INP(ctx)[n].data.normal = value;
adamc@756	1062 }
adamc@801	1063
adamc@801	1064 return 0;
adamc@144	1065 }
adamc@144	1066
adamc@311	1067 char *uw_get_input(uw_context ctx, int n) {
adamc@169	1068 if (n < 0)
adamc@311	1069 uw_error(ctx, FATAL, "Negative input index %d", n);
adamc@1094	1070 if (n >= ctx->app->inputs_len)
adamc@311	1071 uw_error(ctx, FATAL, "Out-of-bounds input index %d", n);
adamc@737	1072
adamc@756	1073 switch (INP(ctx)[n].kind) {
adamc@737	1074 case UNSET:
adamc@737	1075 return NULL;
adamc@739	1076 case FIL:
adamc@739	1077 uw_error(ctx, FATAL, "Tried to read a file form input as normal");
adamc@756	1078 case SUBFORM:
adamc@756	1079 uw_error(ctx, FATAL, "Tried to read a subform form input as normal");
adamc@759	1080 case SUBFORMS:
adamc@759	1081 uw_error(ctx, FATAL, "Tried to read a subforms form input as normal");
adamc@759	1082 case ENTRY:
adamc@759	1083 uw_error(ctx, FATAL, "Tried to read an entry form input as normal");
adamc@737	1084 case NORMAL:
adamc@756	1085 return INP(ctx)[n].data.normal;
adamc@737	1086 default:
adamc@737	1087 uw_error(ctx, FATAL, "Impossible input kind");
adamc@737	1088 }
adamc@138	1089 }
adamc@138	1090
adamc@311	1091 char *uw_get_optional_input(uw_context ctx, int n) {
adamc@190	1092 if (n < 0)
adamc@311	1093 uw_error(ctx, FATAL, "Negative input index %d", n);
adamc@1094	1094 if (n >= ctx->app->inputs_len)
adamc@311	1095 uw_error(ctx, FATAL, "Out-of-bounds input index %d", n);
adamc@737	1096
adamc@756	1097 switch (INP(ctx)[n].kind) {
adamc@737	1098 case UNSET:
adamc@737	1099 return "";
adamc@739	1100 case FIL:
adamc@739	1101 uw_error(ctx, FATAL, "Tried to read a file form input as normal");
adamc@756	1102 case SUBFORM:
adamc@756	1103 uw_error(ctx, FATAL, "Tried to read a subform form input as normal");
adamc@759	1104 case SUBFORMS:
adamc@759	1105 uw_error(ctx, FATAL, "Tried to read a subforms form input as normal");
adamc@759	1106 case ENTRY:
adamc@759	1107 uw_error(ctx, FATAL, "Tried to read an entry form input as normal");
adamc@737	1108 case NORMAL:
adamc@756	1109 return INP(ctx)[n].data.normal;
adamc@737	1110 default:
adamc@737	1111 uw_error(ctx, FATAL, "Impossible input kind");
adamc@737	1112 }
adamc@737	1113 }
adamc@737	1114
adamc@801	1115 int uw_set_file_input(uw_context ctx, const char *name, uw_Basis_file f) {
adamc@1094	1116 int n = ctx->app->input_num(name);
adamc@737	1117
adamc@801	1118 if (n < 0) {
adam@2054	1119 uw_set_error(ctx, "Bad file input name");
adamc@801	1120 return -1;
adamc@801	1121 }
adamc@801	1122
adamc@1094	1123 if (n >= ctx->app->inputs_len) {
adam@2054	1124 uw_set_error(ctx, "For file input name, index %d is out of range", n);
adamc@801	1125 return -1;
adamc@801	1126 }
adamc@737	1127
adamc@739	1128 ctx->inputs[n].kind = FIL;
adamc@739	1129 ctx->inputs[n].data.file = f;
adamc@801	1130
adamc@801	1131 return 0;
adamc@737	1132 }
adamc@737	1133
adamc@739	1134 void *uw_malloc(uw_context ctx, size_t len);
adamc@739	1135
adamc@739	1136 uw_Basis_file uw_get_file_input(uw_context ctx, int n) {
adamc@737	1137 if (n < 0)
adamc@737	1138 uw_error(ctx, FATAL, "Negative file input index %d", n);
adamc@1094	1139 if (n >= ctx->app->inputs_len)
adamc@737	1140 uw_error(ctx, FATAL, "Out-of-bounds file input index %d", n);
adamc@737	1141
adamc@756	1142 switch (INP(ctx)[n].kind) {
adamc@737	1143 case UNSET:
adamc@737	1144 {
adamc@739	1145 char *data = uw_malloc(ctx, 0);
adamc@740	1146 uw_Basis_file f = {NULL, "", {0, data}};
adamc@739	1147 return f;
adamc@737	1148 }
adamc@739	1149 case FIL:
adamc@756	1150 return INP(ctx)[n].data.file;
adamc@737	1151 case NORMAL:
adamc@737	1152 uw_error(ctx, FATAL, "Tried to read a normal form input as files");
adamc@756	1153 case SUBFORM:
adamc@756	1154 uw_error(ctx, FATAL, "Tried to read a subform form input as files");
adamc@759	1155 case SUBFORMS:
adamc@759	1156 uw_error(ctx, FATAL, "Tried to read a subforms form input as files");
adamc@759	1157 case ENTRY:
adamc@759	1158 uw_error(ctx, FATAL, "Tried to read an entry form input as files");
adamc@737	1159 default:
adamc@737	1160 uw_error(ctx, FATAL, "Impossible input kind");
adamc@737	1161 }
adamc@190	1162 }
adamc@190	1163
adamc@756	1164 void uw_enter_subform(uw_context ctx, int n) {
adamc@756	1165 if (n < 0)
adamc@756	1166 uw_error(ctx, FATAL, "Negative subform index %d", n);
adamc@1094	1167 if (n >= ctx->app->inputs_len)
adamc@756	1168 uw_error(ctx, FATAL, "Out-of-bounds subform index %d", n);
adamc@756	1169
adamc@756	1170 switch (INP(ctx)[n].kind) {
adamc@756	1171 case UNSET:
adamc@756	1172 uw_error(ctx, FATAL, "Missing subform");
adamc@756	1173 case FIL:
adamc@756	1174 uw_error(ctx, FATAL, "Tried to read a file form input as subform");
adamc@756	1175 case NORMAL:
adamc@756	1176 uw_error(ctx, FATAL, "Tried to read a normal form input as subform");
adamc@759	1177 case SUBFORMS:
adamc@759	1178 uw_error(ctx, FATAL, "Tried to read a subforms form input as subform");
adamc@759	1179 case ENTRY:
adamc@759	1180 uw_error(ctx, FATAL, "Tried to read an entry form input as subform");
adamc@756	1181 case SUBFORM:
adamc@759	1182 INP(ctx)[n].data.subform.parent = ctx->cur_container;
adamc@760	1183 ctx->cur_container = &INP(ctx)[n];
adamc@756	1184 return;
adamc@756	1185 default:
adamc@756	1186 uw_error(ctx, FATAL, "Impossible input kind");
adamc@756	1187 }
adamc@756	1188 }
adamc@756	1189
adamc@756	1190 void uw_leave_subform(uw_context ctx) {
adamc@756	1191 input *tmp;
adamc@756	1192
adamc@759	1193 if (ctx->cur_container == NULL)
adamc@756	1194 uw_error(ctx, FATAL, "Unmatched uw_leave_subform");
adamc@756	1195
adamc@759	1196 tmp = ctx->cur_container;
adamc@759	1197 ctx->cur_container = tmp->data.subform.parent;
adamc@759	1198 tmp->data.subform.parent = NULL;
adamc@759	1199 }
adamc@759	1200
adamc@759	1201 int uw_enter_subforms(uw_context ctx, int n) {
adamc@759	1202 input *inps;
adamc@759	1203
adamc@759	1204 if (n < 0)
adamc@759	1205 uw_error(ctx, FATAL, "Negative subforms index %d", n);
adamc@1094	1206 if (n >= ctx->app->inputs_len)
adamc@759	1207 uw_error(ctx, FATAL, "Out-of-bounds subforms index %d", n);
adamc@759	1208
adamc@759	1209 switch (INP(ctx)[n].kind) {
adamc@759	1210 case UNSET:
adamc@759	1211 uw_error(ctx, FATAL, "Missing subforms");
adamc@759	1212 case FIL:
adamc@759	1213 uw_error(ctx, FATAL, "Tried to read a file form input as subforms");
adamc@759	1214 case NORMAL:
adamc@759	1215 uw_error(ctx, FATAL, "Tried to read a normal form input %p as subforms", &INP(ctx)[n]);
adamc@759	1216 case SUBFORM:
adamc@759	1217 uw_error(ctx, FATAL, "Tried to read a subform form input as subforms");
adamc@759	1218 case ENTRY:
adamc@759	1219 uw_error(ctx, FATAL, "Tried to read an entry form input as subforms");
adamc@759	1220 case SUBFORMS:
adamc@759	1221 inps = INP(ctx)[n].data.subforms.entries;
adamc@759	1222 if (inps) {
adamc@759	1223 INP(ctx)[n].data.subforms.parent = ctx->cur_container;
adamc@759	1224 ctx->cur_container = INP(ctx)[n].data.subforms.entries;
adamc@759	1225 return 1;
adamc@759	1226 } else
adamc@759	1227 return 0;
adamc@759	1228 default:
adamc@759	1229 uw_error(ctx, FATAL, "Impossible input kind");
adamc@759	1230 }
adamc@759	1231 }
adamc@759	1232
adamc@759	1233 int uw_next_entry(uw_context ctx) {
adamc@759	1234 if (ctx->cur_container == NULL)
adamc@759	1235 uw_error(ctx, FATAL, "uw_next_entry(NULL)");
adamc@759	1236
adamc@759	1237 switch (ctx->cur_container->kind) {
adamc@759	1238 case UNSET:
adamc@759	1239 uw_error(ctx, FATAL, "Missing entry");
adamc@759	1240 case FIL:
adamc@759	1241 uw_error(ctx, FATAL, "Tried to read a file form input as entry");
adamc@759	1242 case NORMAL:
adamc@759	1243 uw_error(ctx, FATAL, "Tried to read a normal form input as entry");
adamc@759	1244 case SUBFORM:
adamc@759	1245 uw_error(ctx, FATAL, "Tried to read a subform form input as entry");
adamc@759	1246 case SUBFORMS:
adamc@759	1247 uw_error(ctx, FATAL, "Tried to read a subforms form input as entry");
adamc@759	1248 case ENTRY:
adamc@759	1249 if (ctx->cur_container->data.entry.next) {
adamc@759	1250 ctx->cur_container = ctx->cur_container->data.entry.next;
adamc@759	1251 return 1;
adamc@759	1252 } else {
adamc@759	1253 ctx->cur_container = ctx->cur_container->data.entry.parent->data.subforms.parent;
adamc@759	1254 return 0;
adamc@759	1255 }
adamc@759	1256 default:
adamc@759	1257 uw_error(ctx, FATAL, "Impossible input kind");
adamc@759	1258 }
adamc@756	1259 }
adamc@756	1260
adamc@643	1261 void uw_set_script_header(uw_context ctx, const char *s) {
adamc@643	1262 ctx->script_header = s;
adamc@643	1263 }
adamc@643	1264
adamc@1094	1265 const char *uw_get_url_prefix(uw_context ctx) {
adamc@1094	1266 return ctx->app->url_prefix;
adamc@667	1267 }
adamc@667	1268
adamc@693	1269 void uw_set_needs_push(uw_context ctx, int n) {
adamc@693	1270 ctx->needs_push = n;
adamc@693	1271 }
adamc@693	1272
adamc@736	1273 void uw_set_needs_sig(uw_context ctx, int n) {
adamc@736	1274 ctx->needs_sig = n;
adamc@736	1275 }
adamc@736	1276
adam@1936	1277 void uw_set_could_write_db(uw_context ctx, int n) {
adam@1936	1278 ctx->could_write_db = n;
adam@1936	1279 }
adam@1936	1280
adam@2056	1281 void uw_set_at_most_one_query(uw_context ctx, int n) {
adam@2056	1282 ctx->at_most_one_query = n;
adam@2056	1283 }
adam@2056	1284
adamc@667	1285
adam@1369	1286 static void uw_buffer_check_ctx(uw_context ctx, const char kind, uw_buffer b, size_t extra, const char *desc) {
adamc@666	1287 if (b->back - b->front < extra) {
adamc@666	1288 size_t desired = b->front - b->start + extra, next;
adamc@136	1289 char *new_heap;
adamc@136	1290
adamc@666	1291 next = b->back - b->start;
adamc@317	1292 if (next == 0)
adamc@317	1293 next = 1;
adamc@317	1294 for (; next < desired; next *= 2);
adamc@136	1295
adamc@1134	1296 if (next > b->max) {
adamc@1113	1297 if (desired <= b->max)
adamc@1113	1298 next = desired;
adamc@1113	1299 else
adamc@1113	1300 uw_error(ctx, FATAL, "Memory limit exceeded (%s)", kind);
adamc@1134	1301 }
adamc@1113	1302
adamc@666	1303 new_heap = realloc(b->start, next);
adamc@666	1304 b->front = new_heap + (b->front - b->start);
adamc@666	1305 b->back = new_heap + next;
adamc@136	1306
adamc@667	1307 if (new_heap != b->start) {
adamc@666	1308 b->start = new_heap;
adam@1389	1309 uw_error(ctx, UNLIMITED_RETRY, "Couldn't allocate new %s contiguously; increasing size to %llu", desc, (unsigned long long)next);
adamc@136	1310 }
adamc@136	1311
adamc@666	1312 b->start = new_heap;
adamc@136	1313 }
adamc@136	1314 }
adamc@136	1315
adamc@832	1316 void uw_check_heap(uw_context ctx, size_t extra) {
adam@1369	1317 uw_buffer_check_ctx(ctx, "heap", &ctx->heap, extra, "heap chunk");
adamc@666	1318 }
adamc@666	1319
adamc@832	1320 char *uw_heap_front(uw_context ctx) {
adamc@832	1321 return ctx->heap.front;
adamc@832	1322 }
adamc@832	1323
adamc@832	1324 void uw_set_heap_front(uw_context ctx, char *fr) {
adamc@832	1325 ctx->heap.front = fr;
adamc@832	1326 }
adamc@832	1327
adam@1782	1328 void uw_begin_initializing(uw_context ctx) {
adam@1782	1329 ctx->amInitializing = 1;
adam@1782	1330 }
adam@1782	1331
adam@1782	1332 void uw_end_initializing(uw_context ctx) {
adam@1782	1333 ctx->amInitializing = 0;
adam@1782	1334 }
adam@1782	1335
adam@2013	1336 static void align_heap(uw_context ctx) {
adam@2013	1337 size_t posn = ctx->heap.front - ctx->heap.start;
adam@2013	1338
adam@2017	1339 if (posn % sizeof(void *) != 0) {
adam@2017	1340 size_t bump = sizeof(void ) - posn % sizeof(void );
adam@2013	1341 uw_check_heap(ctx, bump);
adam@2013	1342 ctx->heap.front += bump;
adam@2013	1343 }
adam@2013	1344 }
adam@2013	1345
adamc@311	1346 void *uw_malloc(uw_context ctx, size_t len) {
adam@2013	1347 // On some architectures, it's important that all word-sized memory accesses
adam@2013	1348 // be to word-aligned addresses, so we'll do a little bit of extra work here
adam@2013	1349 // in anticipation of a possible word-aligned access to the address we'll
adam@2013	1350 // return.
adam@2013	1351
adamc@136	1352 void *result;
adamc@136	1353
adam@1782	1354 if (ctx->amInitializing) {
adam@2017	1355 int error = posix_memalign(&result, sizeof(void *), len);
adam@2013	1356
adam@2013	1357 if (!error)
adam@1782	1358 return result;
adam@1782	1359 else
adam@2013	1360 uw_error(ctx, FATAL, "uw_malloc: posix_memalign() returns %d", error);
adam@1782	1361 } else {
adam@2013	1362 align_heap(ctx);
adam@2013	1363
adam@1782	1364 uw_check_heap(ctx, len);
adam@1782	1365
adam@1782	1366 result = ctx->heap.front;
adam@1782	1367 ctx->heap.front += len;
adam@1782	1368 return result;
adam@1782	1369 }
adamc@117	1370 }
adamc@117	1371
adamc@323	1372 void uw_begin_region(uw_context ctx) {
adam@2013	1373 align_heap(ctx);
adam@2013	1374
adamc@666	1375 regions r = (regions ) ctx->heap.front;
adamc@323	1376
adamc@323	1377 uw_check_heap(ctx, sizeof(regions));
adamc@323	1378
adamc@666	1379 ctx->heap.front += sizeof(regions);
adamc@323	1380
adamc@323	1381 r->next = ctx->regions;
adamc@323	1382 ctx->regions = r;
adamc@323	1383 }
adamc@323	1384
adamc@323	1385 void uw_end_region(uw_context ctx) {
adamc@323	1386 regions *r = ctx->regions;
adamc@323	1387
adamc@323	1388 if (r == NULL)
adamc@323	1389 uw_error(ctx, FATAL, "Region stack underflow");
adamc@323	1390
adamc@666	1391 ctx->heap.front = (char *) r;
adamc@323	1392 ctx->regions = r->next;
adamc@323	1393 }
adamc@323	1394
adamc@324	1395 void uw_memstats(uw_context ctx) {
adam@1369	1396 printf("Headers: %lu/%lu\n", (unsigned long)uw_buffer_used(&ctx->outHeaders), (unsigned long)uw_buffer_avail(&ctx->outHeaders));
adam@1369	1397 printf("Script: %lu/%lu\n", (unsigned long)uw_buffer_used(&ctx->script), (unsigned long)uw_buffer_avail(&ctx->script));
adam@1369	1398 printf("Page: %lu/%lu\n", (unsigned long)uw_buffer_used(&ctx->page), (unsigned long)uw_buffer_avail(&ctx->page));
adam@1369	1399 printf("Heap: %lu/%lu\n", (unsigned long)uw_buffer_used(&ctx->heap), (unsigned long)uw_buffer_avail(&ctx->heap));
adamc@324	1400 }
adamc@324	1401
adam@1915	1402 int uw_pagelen(uw_context ctx) {
adam@1915	1403 return ctx->page.front - ctx->page.start;
adam@1915	1404 }
adam@1915	1405
adamc@311	1406 int uw_send(uw_context ctx, int sock) {
adam@1949	1407 size_t target_length = (ctx->outHeaders.front - ctx->outHeaders.start) + 2 + (ctx->page.front - ctx->page.start);
adam@1949	1408
adam@1949	1409 if (ctx->output_buffer_size < target_length) {
adam@1949	1410 do {
adam@1949	1411 ctx->output_buffer_size *= 2;
adam@1949	1412 } while (ctx->output_buffer_size < target_length);
adam@1949	1413 ctx->output_buffer = realloc(ctx->output_buffer, ctx->output_buffer_size);
adam@1949	1414 }
adam@1949	1415
adam@1949	1416 memcpy(ctx->output_buffer, ctx->outHeaders.start, ctx->outHeaders.front - ctx->outHeaders.start);
adam@1949	1417 memcpy(ctx->output_buffer + (ctx->outHeaders.front - ctx->outHeaders.start), "\r\n", 2);
adam@1949	1418 memcpy(ctx->output_buffer + (ctx->outHeaders.front - ctx->outHeaders.start) + 2, ctx->page.start, ctx->page.front - ctx->page.start);
adam@1949	1419
adam@1949	1420 return uw_really_send(sock, ctx->output_buffer, target_length);
adamc@462	1421 }
adamc@462	1422
adamc@856	1423 int uw_print(uw_context ctx, int fd) {
adamc@856	1424 int n = uw_really_write(fd, ctx->outHeaders.start, ctx->outHeaders.front - ctx->outHeaders.start);
adamc@856	1425
adamc@856	1426 if (n < 0)
adamc@856	1427 return n;
adamc@856	1428
adamc@856	1429 n = uw_really_write(fd, "\r\n", 2);
adamc@856	1430
adamc@856	1431 if (n < 0)
adamc@856	1432 return n;
adamc@856	1433
adamc@856	1434 return uw_really_write(fd, ctx->page.start, ctx->page.front - ctx->page.start);
adamc@856	1435 }
adamc@856	1436
adamc@860	1437 int uw_output(uw_context ctx, int (output)(void data, char buf, size_t len), void data) {
adamc@860	1438 int n = output(data, ctx->outHeaders.start, ctx->outHeaders.front - ctx->outHeaders.start);
adamc@860	1439
adamc@860	1440 if (n < 0)
adamc@860	1441 return n;
adamc@860	1442
adamc@860	1443 n = output(data, "\r\n", 2);
adamc@860	1444
adamc@860	1445 if (n < 0)
adamc@860	1446 return n;
adamc@860	1447
adamc@860	1448 return output(data, ctx->page.start, ctx->page.front - ctx->page.start);
adamc@860	1449 }
adamc@860	1450
adamc@462	1451 static void uw_check_headers(uw_context ctx, size_t extra) {
adam@1369	1452 ctx_uw_buffer_check(ctx, "headers", &ctx->outHeaders, extra);
adamc@462	1453 }
adamc@462	1454
adamc@462	1455 void uw_write_header(uw_context ctx, uw_Basis_string s) {
adamc@462	1456 int len = strlen(s);
adamc@462	1457
adamc@462	1458 uw_check_headers(ctx, len + 1);
adamc@666	1459 strcpy(ctx->outHeaders.front, s);
adamc@666	1460 ctx->outHeaders.front += len;
adamc@562	1461 }
adamc@562	1462
adam@1934	1463 int uw_has_contentLength(uw_context ctx) {
adam@1934	1464 return strstr(ctx->outHeaders.start, "Content-length: ") != NULL;
adam@1934	1465 }
adam@1934	1466
adamc@1110	1467 void uw_clear_headers(uw_context ctx) {
adam@1369	1468 uw_buffer_reset(&ctx->outHeaders);
adamc@1110	1469 }
adamc@1110	1470
adam@1932	1471 void uw_Basis_clear_page(uw_context ctx) {
adam@1932	1472 uw_buffer_reset(&ctx->page);
adam@1932	1473 }
adam@1932	1474
adamc@562	1475 static void uw_check_script(uw_context ctx, size_t extra) {
adam@1369	1476 ctx_uw_buffer_check(ctx, "script", &ctx->script, extra);
adamc@562	1477 }
adamc@562	1478
adamc@562	1479 void uw_write_script(uw_context ctx, uw_Basis_string s) {
adamc@562	1480 int len = strlen(s);
adamc@562	1481
adamc@562	1482 uw_check_script(ctx, len + 1);
adamc@666	1483 strcpy(ctx->script.front, s);
adamc@666	1484 ctx->script.front += len;
adamc@562	1485 }
adamc@562	1486
adam@1446	1487 const char *uw_get_real_script(uw_context ctx) {
adam@1671	1488 if (strstr(ctx->outHeaders.start, "Set-Cookie: ")) {
adam@1671	1489 uw_write_script(ctx, "sig=\"");
adam@1671	1490 uw_write_script(ctx, ctx->app->cookie_sig(ctx));
adam@1671	1491 uw_write_script(ctx, "\";");
adam@1671	1492 }
adam@1671	1493
adam@1446	1494 return ctx->script.start;
adam@1446	1495 }
adam@1446	1496
adamc@695	1497 uw_Basis_string uw_Basis_maybe_onload(uw_context ctx, uw_Basis_string s) {
adamc@695	1498 if (s[0] == 0)
adamc@695	1499 return "";
adamc@695	1500 else {
adamc@695	1501 char *r = uw_malloc(ctx, 11 + strlen(s));
adamc@695	1502 sprintf(r, " onload='%s'", s);
adamc@695	1503 return r;
adamc@695	1504 }
adamc@695	1505 }
adamc@695	1506
adamc@1042	1507 uw_Basis_string uw_Basis_maybe_onunload(uw_context ctx, uw_Basis_string s) {
adamc@1042	1508 if (ctx->script_header[0] == 0)
adamc@1042	1509 return "";
adamc@1042	1510 else {
vshabanoff@1763	1511 char *r = uw_malloc(ctx, 37 + strlen(s));
vshabanoff@1763	1512 sprintf(r, " onunload='unloading=true;%s;unload()'", s);
adamc@1042	1513 return r;
adamc@1042	1514 }
adamc@1042	1515 }
adamc@1042	1516
adamc@694	1517 const char *uw_Basis_get_settings(uw_context ctx, uw_unit u) {
adamc@736	1518 if (ctx->client == NULL) {
adamc@736	1519 if (ctx->needs_sig) {
adamc@1094	1520 char *sig = ctx->app->cookie_sig(ctx);
adamc@736	1521 char *r = uw_malloc(ctx, strlen(sig) + 8);
adamc@736	1522 sprintf(r, "sig=\"%s\";", sig);
adamc@736	1523 return r;
adamc@736	1524 }
adamc@736	1525 else
adamc@736	1526 return "";
adamc@736	1527 } else {
adamc@1094	1528 char *sig = ctx->needs_sig ? ctx->app->cookie_sig(ctx) : "";
adamc@1094	1529 char r = uw_malloc(ctx, 59 + 3 INTS_MAX + strlen(ctx->app->url_prefix)
adamc@736	1530 + (ctx->needs_sig ? strlen(sig) + 7 : 0));
adam@1552	1531 sprintf(r, "isPost=%s;client_id=%u;client_pass=%d;url_prefix=\"%s\";timeout=%d;%s%s%slistener();",
adam@1552	1532 (ctx->isPost ? "true" : "false"),
adamc@682	1533 ctx->client->id,
adamc@682	1534 ctx->client->pass,
adamc@1094	1535 ctx->app->url_prefix,
adamc@1094	1536 ctx->app->timeout,
adamc@736	1537 ctx->needs_sig ? "sig=\"" : "",
adamc@736	1538 sig,
adamc@736	1539 ctx->needs_sig ? "\";" : "");
adamc@679	1540 return r;
adamc@668	1541 }
adamc@667	1542 }
adamc@667	1543
adamc@574	1544 uw_Basis_string uw_Basis_jsifyString(uw_context ctx, uw_Basis_string s) {
adamc@574	1545 char r, s2;
adamc@574	1546
adam@1446	1547 uw_check_heap(ctx, strlen(s) * 4 + 3);
adamc@574	1548
adamc@666	1549 r = s2 = ctx->heap.front;
adamc@574	1550 *s2++ = '"';
adamc@574	1551
adamc@574	1552 for (; *s; s++) {
adam@1286	1553 unsigned char c = *s;
adamc@574	1554
adamc@574	1555 switch (c) {
adamc@574	1556 case '"':
adamc@574	1557 strcpy(s2, "\\\"");
adamc@574	1558 s2 += 2;
adamc@574	1559 break;
adamc@1027	1560 case '\'':
adamc@1027	1561 strcpy(s2, "\\047");
adamc@1027	1562 s2 += 4;
adamc@1027	1563 break;
adamc@574	1564 case '\\':
adamc@574	1565 strcpy(s2, "\\\\");
adamc@574	1566 s2 += 2;
adamc@574	1567 break;
adam@1457	1568 case '<':
adam@1457	1569 strcpy(s2, "\\074");
adam@1457	1570 s2 += 4;
adam@1457	1571 break;
adamc@574	1572 default:
adam@1286	1573 if (isprint((int)c) \|\| c >= 128)
adamc@574	1574 *s2++ = c;
adamc@574	1575 else {
adam@1429	1576 sprintf(s2, "\\%03o", c);
adamc@574	1577 s2 += 4;
adamc@574	1578 }
adamc@574	1579 }
adamc@574	1580 }
adamc@574	1581
adamc@574	1582 strcpy(s2, "\"");
adamc@910	1583 ctx->heap.front = s2 + 2;
adamc@574	1584 return r;
adamc@574	1585 }
adamc@574	1586
adam@1286	1587 uw_Basis_string uw_Basis_jsifyChar(uw_context ctx, uw_Basis_char c1) {
adam@1286	1588 unsigned char c = c1;
adamc@1025	1589 char r, s2;
adamc@1025	1590
adam@1446	1591 uw_check_heap(ctx, 7);
adamc@1025	1592
adamc@1025	1593 r = s2 = ctx->heap.front;
adamc@1025	1594 *s2++ = '"';
adamc@1025	1595
adamc@1025	1596 switch (c) {
adamc@1025	1597 case '"':
adamc@1025	1598 strcpy(s2, "\\\"");
adamc@1025	1599 s2 += 2;
adamc@1025	1600 break;
adamc@1027	1601 case '\'':
adamc@1027	1602 strcpy(s2, "\\047");
adamc@1027	1603 s2 += 4;
adamc@1027	1604 break;
adamc@1025	1605 case '\\':
adamc@1025	1606 strcpy(s2, "\\\\");
adamc@1025	1607 s2 += 2;
adamc@1025	1608 break;
adam@1457	1609 case '<':
adam@1457	1610 strcpy(s2, "\\074");
adam@1457	1611 s2 += 4;
adam@1457	1612 break;
adamc@1025	1613 default:
adam@1286	1614 if (isprint((int)c) \|\| c >= 128)
adamc@1025	1615 *s2++ = c;
adamc@1025	1616 else {
adam@1429	1617 sprintf(s2, "\\%03o", (unsigned char)c);
adamc@1025	1618 s2 += 4;
adamc@1025	1619 }
adamc@1025	1620 }
adamc@1025	1621
adamc@1025	1622 strcpy(s2, "\"");
adamc@1025	1623 ctx->heap.front = s2 + 2;
adamc@1025	1624 return r;
adamc@1025	1625 }
adamc@1025	1626
adamc@574	1627 uw_Basis_string uw_Basis_jsifyString_ws(uw_context ctx, uw_Basis_string s) {
adamc@574	1628 char r, s2;
adamc@574	1629
adam@1446	1630 uw_check_script(ctx, strlen(s) * 4 + 3);
adamc@574	1631
adamc@666	1632 r = s2 = ctx->script.front;
adamc@574	1633 *s2++ = '"';
adamc@574	1634
adamc@574	1635 for (; *s; s++) {
adam@1286	1636 unsigned char c = *s;
adamc@574	1637
adamc@574	1638 switch (c) {
adamc@577	1639 case '\'':
adamc@1027	1640 strcpy(s2, "\\");
adamc@574	1641 s2 += 2;
adamc@574	1642 break;
adamc@574	1643 case '\\':
adamc@574	1644 strcpy(s2, "\\\\");
adamc@574	1645 s2 += 2;
adamc@574	1646 break;
adam@1457	1647 case '<':
adam@1457	1648 strcpy(s2, "\\074");
adam@1457	1649 s2 += 4;
adam@1457	1650 break;
adamc@574	1651 default:
adam@1286	1652 if (isprint((int)c) \|\| c >= 128)
adamc@574	1653 *s2++ = c;
adamc@574	1654 else {
adam@1429	1655 sprintf(s2, "\\%03o", c);
adamc@574	1656 s2 += 4;
adamc@574	1657 }
adamc@574	1658 }
adamc@574	1659 }
adamc@574	1660
adamc@574	1661 strcpy(s2, "\"");
adamc@666	1662 ctx->script.front = s2 + 1;
adamc@574	1663 return r;
adamc@574	1664 }
adamc@574	1665
adamc@682	1666 char *uw_Basis_jsifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	1667 if (ctx->client == NULL \|\| chn.cli != ctx->client->id)
adamc@682	1668 return "null";
adamc@682	1669 else {
adamc@682	1670 int len;
adamc@682	1671 char *r;
adamc@682	1672
adamc@682	1673 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	1674 r = ctx->heap.front;
adamc@682	1675 sprintf(r, "%u%n", chn.chn, &len);
adamc@682	1676 ctx->heap.front += len+1;
adamc@682	1677 return r;
adamc@682	1678 }
adamc@682	1679 }
adamc@682	1680
adam@1446	1681 uw_Basis_source uw_Basis_new_client_source(uw_context ctx, uw_Basis_string s) {
adamc@577	1682 int len;
adamc@577	1683 size_t s_len = strlen(s);
adamc@562	1684
grrwlf@1998	1685 if(ctx->id < 0)
grrwlf@1998	1686 uw_error(ctx, FATAL, "Attempt to create client source using inappropriate context");
grrwlf@1998	1687
adam@1446	1688 uw_check_script(ctx, 15 + 2 * INTS_MAX + s_len);
adam@1446	1689 sprintf(ctx->script.front, "s%d_%llu=sc(exec(%n", ctx->id, ctx->source_count, &len);
adamc@666	1690 ctx->script.front += len;
adamc@666	1691 strcpy(ctx->script.front, s);
adamc@666	1692 ctx->script.front += s_len;
adamc@970	1693 strcpy(ctx->script.front, "));");
adamc@972	1694 ctx->script.front += 3;
adamc@562	1695
adam@1446	1696 uw_Basis_source r = {ctx->id, ctx->source_count++};
adam@1446	1697 return r;
adam@1446	1698 }
adam@1446	1699
adam@1446	1700 uw_unit uw_Basis_set_client_source(uw_context ctx, uw_Basis_source src, uw_Basis_string s) {
adamc@577	1701 int len;
adamc@577	1702 size_t s_len = strlen(s);
adamc@577	1703
adam@1446	1704 uw_check_script(ctx, 15 + 2 * INTS_MAX + s_len);
adam@1446	1705 sprintf(ctx->script.front, "sv(s%d_%llu,exec(%n", src.context, src.source, &len);
adamc@666	1706 ctx->script.front += len;
adamc@666	1707 strcpy(ctx->script.front, s);
adamc@666	1708 ctx->script.front += s_len;
adamc@970	1709 strcpy(ctx->script.front, "));");
adamc@972	1710 ctx->script.front += 3;
adamc@577	1711
adamc@577	1712 return uw_unit_v;
adamc@577	1713 }
adamc@577	1714
adamc@311	1715 static void uw_check(uw_context ctx, size_t extra) {
adam@1369	1716 ctx_uw_buffer_check(ctx, "page", &ctx->page, extra);
adamc@117	1717 }
adamc@117	1718
adamc@311	1719 static void uw_writec_unsafe(uw_context ctx, char c) {
adamc@666	1720 *(ctx->page.front)++ = c;
adam@1413	1721 *ctx->page.front = 0;
adamc@117	1722 }
adamc@117	1723
adamc@311	1724 void uw_writec(uw_context ctx, char c) {
adam@1413	1725 uw_check(ctx, 2);
adamc@311	1726 uw_writec_unsafe(ctx, c);
adamc@117	1727 }
adamc@117	1728
adam@2085	1729 void uw_Basis_writec(uw_context ctx, char c) {
adam@2085	1730 uw_writec(ctx, c);
adam@2085	1731 }
adam@2085	1732
adamc@311	1733 static void uw_write_unsafe(uw_context ctx, const char* s) {
adamc@117	1734 int len = strlen(s);
adamc@666	1735 memcpy(ctx->page.front, s, len);
adamc@666	1736 ctx->page.front += len;
adamc@117	1737 }
adamc@117	1738
adamc@311	1739 void uw_write(uw_context ctx, const char* s) {
adamc@311	1740 uw_check(ctx, strlen(s) + 1);
adamc@311	1741 uw_write_unsafe(ctx, s);
adamc@666	1742 *ctx->page.front = 0;
adamc@102	1743 }
adamc@106	1744
ziv@2204	1745 void uw_recordingStart(uw_context ctx) {
adam@2298	1746 if (ctx->numRecording == ctx->recordingCapacity) {
adam@2298	1747 ++ctx->recordingCapacity;
adam@2298	1748 ctx->recordingOffsets = realloc(ctx->recordingOffsets, sizeof(int) * ctx->recordingCapacity);
ziv@2262	1749 }
adam@2298	1750 ctx->recordingOffsets[ctx->numRecording] = ctx->page.front - ctx->page.start;
adam@2298	1751 ++ctx->numRecording;
ziv@2204	1752 }
ziv@2204	1753
ziv@2204	1754 char *uw_recordingRead(uw_context ctx) {
adam@2298	1755 char *recording = ctx->page.start + ctx->recordingOffsets[--ctx->numRecording];
ziv@2262	1756 return strdup(recording);
ziv@2204	1757 }
ziv@2204	1758
adamc@311	1759 char *uw_Basis_attrifyInt(uw_context ctx, uw_Basis_int n) {
adamc@136	1760 char *result;
adamc@136	1761 int len;
adamc@311	1762 uw_check_heap(ctx, INTS_MAX);
adamc@666	1763 result = ctx->heap.front;
adamc@276	1764 sprintf(result, "%lld%n", n, &len);
adamc@666	1765 ctx->heap.front += len+1;
adamc@136	1766 return result;
adamc@106	1767 }
adamc@106	1768
adamc@311	1769 char *uw_Basis_attrifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@136	1770 char *result;
adamc@136	1771 int len;
adamc@311	1772 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	1773 result = ctx->heap.front;
adam@1920	1774 sprintf(result, "%.16g%n", n, &len);
adamc@666	1775 ctx->heap.front += len+1;
adamc@136	1776 return result;
adamc@106	1777 }
adamc@106	1778
adamc@311	1779 char *uw_Basis_attrifyString(uw_context ctx, uw_Basis_string s) {
adamc@136	1780 int len = strlen(s);
adamc@136	1781 char result, p;
adamc@311	1782 uw_check_heap(ctx, len * 6 + 1);
adamc@136	1783
adamc@666	1784 result = p = ctx->heap.front;
adamc@136	1785
adamc@136	1786 for (; *s; s++) {
adamc@1054	1787 unsigned char c = *s;
adamc@136	1788
adamc@136	1789 if (c == '"') {
adamc@136	1790 strcpy(p, """);
adamc@136	1791 p += 6;
adamc@136	1792 } else if (c == '&') {
adamc@136	1793 strcpy(p, "&");
adamc@136	1794 p += 5;
adamc@136	1795 }
adamc@1059	1796 else
adamc@136	1797 *p++ = c;
adamc@136	1798 }
adamc@136	1799
adamc@137	1800 *p++ = 0;
adamc@666	1801 ctx->heap.front = p;
adamc@136	1802 return result;
adamc@106	1803 }
adamc@106	1804
adamc@1011	1805 char *uw_Basis_attrifyChar(uw_context ctx, uw_Basis_char c) {
adamc@1011	1806 char result, p;
adamc@1011	1807 uw_check_heap(ctx, 7);
adamc@1011	1808
adamc@1011	1809 result = p = ctx->heap.front;
adamc@1011	1810
adamc@1011	1811 if (c == '"') {
adamc@1011	1812 strcpy(p, """);
adamc@1011	1813 p += 6;
adamc@1011	1814 } else if (c == '&') {
adamc@1011	1815 strcpy(p, "&");
adamc@1011	1816 p += 5;
adamc@1011	1817 }
adamc@1059	1818 else
adamc@1011	1819 *p++ = c;
adamc@1011	1820
adamc@1011	1821 *p++ = 0;
adamc@1011	1822 ctx->heap.front = p;
adamc@1011	1823 return result;
adamc@1011	1824 }
adamc@1011	1825
adamc@721	1826 char *uw_Basis_attrifyCss_class(uw_context ctx, uw_Basis_css_class s) {
adamc@721	1827 return s;
adamc@721	1828 }
adamc@721	1829
adamc@311	1830 static void uw_Basis_attrifyInt_w_unsafe(uw_context ctx, uw_Basis_int n) {
adamc@117	1831 int len;
adamc@117	1832
adamc@666	1833 sprintf(ctx->page.front, "%lld%n", n, &len);
adamc@666	1834 ctx->page.front += len;
adamc@106	1835 }
adamc@106	1836
adamc@428	1837 uw_unit uw_Basis_attrifyInt_w(uw_context ctx, uw_Basis_int n) {
adamc@311	1838 uw_check(ctx, INTS_MAX);
adamc@311	1839 uw_Basis_attrifyInt_w_unsafe(ctx, n);
adamc@428	1840
adamc@428	1841 return uw_unit_v;
adamc@106	1842 }
adamc@106	1843
adamc@428	1844 uw_unit uw_Basis_attrifyFloat_w(uw_context ctx, uw_Basis_float n) {
adamc@117	1845 int len;
adamc@117	1846
adamc@311	1847 uw_check(ctx, FLOATS_MAX);
adamc@666	1848 sprintf(ctx->page.front, "%g%n", n, &len);
adamc@666	1849 ctx->page.front += len;
adamc@428	1850
adamc@428	1851 return uw_unit_v;
adamc@117	1852 }
adamc@117	1853
adamc@428	1854 uw_unit uw_Basis_attrifyString_w(uw_context ctx, uw_Basis_string s) {
adamc@311	1855 uw_check(ctx, strlen(s) * 6);
adamc@117	1856
adamc@106	1857 for (; *s; s++) {
adamc@1054	1858 unsigned char c = *s;
adamc@106	1859
adamc@106	1860 if (c == '"')
adamc@311	1861 uw_write_unsafe(ctx, """);
adamc@136	1862 else if (c == '&')
adamc@311	1863 uw_write_unsafe(ctx, "&");
adamc@1059	1864 else
adamc@311	1865 uw_writec_unsafe(ctx, c);
adamc@106	1866 }
adamc@428	1867
adamc@428	1868 return uw_unit_v;
adamc@106	1869 }
adamc@120	1870
adamc@1011	1871 uw_unit uw_Basis_attrifyChar_w(uw_context ctx, uw_Basis_char c) {
adamc@1011	1872 uw_check(ctx, 6);
adamc@1011	1873
adamc@1011	1874 if (c == '"')
adamc@1011	1875 uw_write_unsafe(ctx, """);
adamc@1011	1876 else if (c == '&')
adamc@1011	1877 uw_write_unsafe(ctx, "&");
adamc@1059	1878 else
adamc@1011	1879 uw_writec_unsafe(ctx, c);
adamc@1011	1880
adamc@1011	1881 return uw_unit_v;
adamc@1011	1882 }
adamc@1011	1883
adamc@120	1884
adamc@311	1885 char *uw_Basis_urlifyInt(uw_context ctx, uw_Basis_int n) {
adamc@137	1886 int len;
adamc@137	1887 char *r;
adamc@137	1888
adamc@311	1889 uw_check_heap(ctx, INTS_MAX);
adamc@666	1890 r = ctx->heap.front;
adamc@276	1891 sprintf(r, "%lld%n", n, &len);
adamc@666	1892 ctx->heap.front += len+1;
adamc@137	1893 return r;
adamc@120	1894 }
adamc@120	1895
adamc@682	1896 char *uw_Basis_urlifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	1897 if (ctx->client == NULL \|\| chn.cli != ctx->client->id)
adamc@682	1898 return "";
adamc@682	1899 else {
adamc@682	1900 int len;
adamc@682	1901 char *r;
adamc@679	1902
adamc@682	1903 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	1904 r = ctx->heap.front;
adamc@682	1905 sprintf(r, "%u%n", chn.chn, &len);
adamc@682	1906 ctx->heap.front += len+1;
adamc@682	1907 return r;
adamc@682	1908 }
adamc@679	1909 }
adamc@679	1910
adamc@311	1911 char *uw_Basis_urlifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@137	1912 int len;
adamc@137	1913 char *r;
adamc@137	1914
adamc@311	1915 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	1916 r = ctx->heap.front;
adamc@137	1917 sprintf(r, "%g%n", n, &len);
adamc@666	1918 ctx->heap.front += len+1;
adamc@137	1919 return r;
adamc@120	1920 }
adamc@120	1921
adamc@311	1922 char *uw_Basis_urlifyString(uw_context ctx, uw_Basis_string s) {
adamc@137	1923 char r, p;
adamc@137	1924
adamc@925	1925 if (s[0] == '\0')
adamc@925	1926 return "_";
adamc@925	1927
adamc@925	1928 uw_check_heap(ctx, strlen(s) * 3 + 1 + !!(s[0] == '_'));
adamc@925	1929
adamc@925	1930 r = p = ctx->heap.front;
adamc@925	1931 if (s[0] == '_')
adamc@925	1932 *p++ = '_';
adamc@925	1933
adamc@925	1934 for (; *s; s++) {
adamc@1087	1935 unsigned char c = *s;
adamc@137	1936
adamc@137	1937 if (c == ' ')
adamc@137	1938 *p++ = '+';
adamc@137	1939 else if (isalnum(c))
adamc@137	1940 *p++ = c;
adamc@137	1941 else {
adamc@1259	1942 sprintf(p, ".%02X", c);
adamc@137	1943 p += 3;
adamc@137	1944 }
adamc@137	1945 }
adamc@137	1946
adamc@137	1947 *p++ = 0;
adamc@666	1948 ctx->heap.front = p;
adamc@137	1949 return r;
adamc@120	1950 }
adamc@120	1951
adamc@311	1952 char *uw_Basis_urlifyBool(uw_context ctx, uw_Basis_bool b) {
adamc@311	1953 if (b == uw_Basis_False)
adamc@186	1954 return "0";
adamc@186	1955 else
adamc@186	1956 return "1";
adamc@186	1957 }
adamc@186	1958
adam@1620	1959 char *uw_Basis_urlifySource(uw_context ctx, uw_Basis_source src) {
adam@1620	1960 char *r;
adam@1620	1961 int len;
adam@1620	1962 uw_check_heap(ctx, 2 * INTS_MAX + 2);
adam@1620	1963 r = ctx->heap.front;
adam@1620	1964 sprintf(r, "%d/%llu%n", src.context, src.source, &len);
adam@1620	1965 ctx->heap.front += len+1;
adam@1620	1966 return r;
adam@1620	1967 }
adam@1620	1968
adamc@311	1969 static void uw_Basis_urlifyInt_w_unsafe(uw_context ctx, uw_Basis_int n) {
adamc@120	1970 int len;
adamc@120	1971
adamc@666	1972 sprintf(ctx->page.front, "%lld%n", n, &len);
adamc@666	1973 ctx->page.front += len;
adamc@120	1974 }
adamc@120	1975
adamc@428	1976 uw_unit uw_Basis_urlifyInt_w(uw_context ctx, uw_Basis_int n) {
adamc@311	1977 uw_check(ctx, INTS_MAX);
adamc@311	1978 uw_Basis_urlifyInt_w_unsafe(ctx, n);
adamc@428	1979
adamc@428	1980 return uw_unit_v;
adamc@120	1981 }
adamc@120	1982
adamc@682	1983 uw_unit uw_Basis_urlifyChannel_w(uw_context ctx, uw_Basis_channel chn) {
adamc@682	1984 if (ctx->client != NULL && chn.cli == ctx->client->id) {
adamc@682	1985 int len;
phurst@1981	1986
adamc@682	1987 uw_check(ctx, INTS_MAX + 1);
adamc@682	1988 sprintf(ctx->page.front, "%u%n", chn.chn, &len);
adamc@682	1989 ctx->page.front += len;
adamc@682	1990 }
phurst@1981	1991
adamc@679	1992 return uw_unit_v;
adamc@679	1993 }
adamc@679	1994
adamc@428	1995 uw_unit uw_Basis_urlifyFloat_w(uw_context ctx, uw_Basis_float n) {
adamc@120	1996 int len;
adamc@120	1997
adamc@311	1998 uw_check(ctx, FLOATS_MAX);
adamc@666	1999 sprintf(ctx->page.front, "%g%n", n, &len);
adamc@666	2000 ctx->page.front += len;
adamc@428	2001
adamc@428	2002 return uw_unit_v;
adamc@120	2003 }
adamc@120	2004
adamc@488	2005 uw_Basis_string uw_Basis_urlifyTime(uw_context ctx, uw_Basis_time t) {
adamc@1376	2006 return uw_Basis_urlifyInt(ctx, (uw_Basis_int)t.seconds * 1000000 + t.microseconds);
adamc@488	2007 }
adamc@488	2008
adam@1404	2009 uw_unit uw_Basis_urlifyTime_w(uw_context ctx, uw_Basis_time t) {
adam@1404	2010 return uw_Basis_urlifyInt_w(ctx, (uw_Basis_int)t.seconds * 1000000 + t.microseconds);
adam@1404	2011 }
adam@1404	2012
adamc@428	2013 uw_unit uw_Basis_urlifyString_w(uw_context ctx, uw_Basis_string s) {
adamc@925	2014 if (s[0] == '\0') {
adamc@925	2015 uw_check(ctx, 1);
adamc@925	2016 uw_writec_unsafe(ctx, '_');
adamc@925	2017 return uw_unit_v;
adamc@925	2018 }
adamc@925	2019
adamc@925	2020 uw_check(ctx, strlen(s) * 3 + !!(s[0] == '_'));
adamc@925	2021
adamc@925	2022 if (s[0] == '_')
adamc@925	2023 uw_writec_unsafe(ctx, '_');
adamc@120	2024
adamc@120	2025 for (; *s; s++) {
adamc@1087	2026 unsigned char c = *s;
adamc@120	2027
adamc@120	2028 if (c == ' ')
adamc@311	2029 uw_writec_unsafe(ctx, '+');
adamc@120	2030 else if (isalnum(c))
adamc@311	2031 uw_writec_unsafe(ctx, c);
adamc@120	2032 else {
adamc@1259	2033 sprintf(ctx->page.front, ".%02X", c);
adamc@666	2034 ctx->page.front += 3;
adamc@120	2035 }
adamc@120	2036 }
adamc@428	2037
adamc@428	2038 return uw_unit_v;
adamc@120	2039 }
adamc@120	2040
adamc@428	2041 uw_unit uw_Basis_urlifyBool_w(uw_context ctx, uw_Basis_bool b) {
adamc@311	2042 if (b == uw_Basis_False)
adamc@311	2043 uw_writec(ctx, '0');
adamc@186	2044 else
adamc@311	2045 uw_writec(ctx, '1');
adamc@428	2046
adamc@428	2047 return uw_unit_v;
adamc@186	2048 }
adamc@186	2049
adam@1620	2050 uw_unit uw_Basis_urlifySource_w(uw_context ctx, uw_Basis_source src) {
adam@1620	2051 int len;
phurst@1981	2052
adam@1620	2053 uw_check(ctx, 2 * INTS_MAX + 2);
adam@1620	2054 sprintf(ctx->page.front, "%d/%llu%n", src.context, src.source, &len);
adam@1620	2055 ctx->page.front += len;
phurst@1981	2056
adam@1620	2057 return uw_unit_v;
adam@1620	2058 }
adam@1620	2059
adamc@120	2060
adamc@311	2061 static char uw_unurlify_advance(char s) {
adamc@144	2062 char *new_s = strchr(s, '/');
adamc@120	2063
adamc@120	2064 if (new_s)
adamc@120	2065 *new_s++ = 0;
adamc@120	2066 else
adamc@144	2067 new_s = strchr(s, 0);
adamc@144	2068
adamc@144	2069 return new_s;
adamc@144	2070 }
adamc@144	2071
adamc@311	2072 uw_Basis_int uw_Basis_unurlifyInt(uw_context ctx, char **s) {
adamc@311	2073 char new_s = uw_unurlify_advance(s);
adamc@311	2074 uw_Basis_int r;
adamc@120	2075
adamc@276	2076 r = atoll(*s);
adamc@120	2077 *s = new_s;
adamc@120	2078 return r;
adamc@120	2079 }
adamc@120	2080
adamc@311	2081 uw_Basis_float uw_Basis_unurlifyFloat(uw_context ctx, char **s) {
adamc@311	2082 char new_s = uw_unurlify_advance(s);
adamc@311	2083 uw_Basis_float r;
adamc@120	2084
adamc@120	2085 r = atof(*s);
adamc@120	2086 *s = new_s;
adamc@120	2087 return r;
adamc@120	2088 }
adamc@120	2089
adamc@488	2090 uw_Basis_time uw_Basis_unurlifyTime(uw_context ctx, char **s) {
adam@1365	2091 uw_Basis_int n = uw_Basis_unurlifyInt(ctx, s);
adam@1365	2092 uw_Basis_time r = {n / 1000000, n % 1000000};
adam@1365	2093 return r;
adamc@488	2094 }
adamc@488	2095
adamc@1023	2096 static uw_Basis_string uw_unurlifyString_to(int fromClient, uw_context ctx, char r, char s) {
adamc@927	2097 char s1, s2 = s;
adamc@144	2098 int n;
adamc@136	2099
adamc@1023	2100 if (!fromClient) {
adamc@1023	2101 if (*s2 == '_')
adamc@1023	2102 ++s2;
adamc@1259	2103 else if ((s2[0] == '%' \|\| s2[0] == '.') && s2[1] == '5' && (s2[2] == 'f' \|\| s2[2] == 'F'))
adamc@1023	2104 s2 += 3;
adamc@1023	2105 }
adamc@925	2106
adamc@927	2107 for (s1 = r; *s2; ++s1, ++s2) {
adamc@1087	2108 unsigned char c = *s2;
adamc@136	2109
adamc@136	2110 switch (c) {
adamc@136	2111 case '+':
adamc@136	2112 *s1 = ' ';
adamc@136	2113 break;
adamc@136	2114 case '%':
adamc@169	2115 if (s2[1] == 0)
adamc@311	2116 uw_error(ctx, FATAL, "Missing first character of escaped URL byte");
adamc@169	2117 if (s2[2] == 0)
adamc@311	2118 uw_error(ctx, FATAL, "Missing second character of escaped URL byte");
adamc@169	2119 if (sscanf(s2+1, "%02X", &n) != 1)
adam@1444	2120 uw_error(ctx, FATAL, "Invalid escaped URL byte starting at: %s", uw_Basis_htmlifyString(ctx, s2));
adamc@136	2121 *s1 = n;
adamc@136	2122 s2 += 2;
adamc@136	2123 break;
adamc@1259	2124 case '.':
adamc@1259	2125 if (!fromClient) {
adamc@1259	2126 if (s2[1] == 0)
adamc@1259	2127 uw_error(ctx, FATAL, "Missing first character of escaped URL byte");
adamc@1259	2128 if (s2[2] == 0)
adamc@1259	2129 uw_error(ctx, FATAL, "Missing second character of escaped URL byte");
adamc@1259	2130 if (sscanf(s2+1, "%02X", &n) != 1)
adam@1444	2131 uw_error(ctx, FATAL, "Invalid escaped URL byte starting at: %s", uw_Basis_htmlifyString(ctx, s2));
adamc@1259	2132 *s1 = n;
adamc@1259	2133 s2 += 2;
adamc@1259	2134 break;
adamc@1259	2135 }
adamc@136	2136 default:
adamc@136	2137 *s1 = c;
adamc@136	2138 }
adamc@136	2139 }
adamc@136	2140 *s1++ = 0;
adamc@144	2141 return s1;
adamc@144	2142 }
adamc@144	2143
adamc@311	2144 uw_Basis_bool uw_Basis_unurlifyBool(uw_context ctx, char **s) {
adamc@311	2145 char new_s = uw_unurlify_advance(s);
adamc@311	2146 uw_Basis_bool r;
phurst@1981	2147
adamc@186	2148 if (s[0] == 0 \|\| !strcmp(s, "0") \|\| !strcmp(*s, "off"))
adamc@311	2149 r = uw_Basis_False;
adamc@186	2150 else
adamc@311	2151 r = uw_Basis_True;
adamc@186	2152
adamc@186	2153 *s = new_s;
adamc@186	2154 return r;
adamc@186	2155 }
adamc@186	2156
adamc@311	2157 uw_Basis_string uw_Basis_unurlifyString(uw_context ctx, char **s) {
adamc@311	2158 char new_s = uw_unurlify_advance(s);
adamc@1134	2159 char *r;
adamc@1134	2160 int len;
adamc@144	2161
adamc@200	2162 len = strlen(*s);
adamc@311	2163 uw_check_heap(ctx, len + 1);
adamc@144	2164
adamc@666	2165 r = ctx->heap.front;
adamc@1023	2166 ctx->heap.front = uw_unurlifyString_to(0, ctx, ctx->heap.front, *s);
adamc@1023	2167 *s = new_s;
adamc@1023	2168 return r;
adamc@1023	2169 }
adamc@1023	2170
adamc@1109	2171 uw_Basis_unit uw_Basis_unurlifyUnit(uw_context ctx, char **s) {
adamc@1109	2172 s = uw_unurlify_advance(s);
adamc@1109	2173 return uw_unit_v;
adamc@1109	2174 }
adamc@1109	2175
adamc@1023	2176 uw_Basis_string uw_Basis_unurlifyString_fromClient(uw_context ctx, char **s) {
adamc@1023	2177 char new_s = uw_unurlify_advance(s);
adamc@1134	2178 char *r;
adamc@1134	2179 int len;
adamc@1023	2180
adamc@1023	2181 len = strlen(*s);
adamc@1023	2182 uw_check_heap(ctx, len + 1);
adamc@1023	2183
adamc@1023	2184 r = ctx->heap.front;
adamc@1023	2185 ctx->heap.front = uw_unurlifyString_to(1, ctx, ctx->heap.front, *s);
adamc@136	2186 *s = new_s;
adamc@136	2187 return r;
adamc@120	2188 }
adamc@135	2189
adamc@135	2190
adamc@311	2191 char *uw_Basis_htmlifyInt(uw_context ctx, uw_Basis_int n) {
adamc@286	2192 int len;
adamc@286	2193 char *r;
adamc@286	2194
adamc@311	2195 uw_check_heap(ctx, INTS_MAX);
adamc@666	2196 r = ctx->heap.front;
adamc@286	2197 sprintf(r, "%lld%n", n, &len);
adamc@666	2198 ctx->heap.front += len+1;
adamc@286	2199 return r;
adamc@286	2200 }
adamc@286	2201
adamc@428	2202 uw_unit uw_Basis_htmlifyInt_w(uw_context ctx, uw_Basis_int n) {
adamc@286	2203 int len;
adamc@286	2204
adamc@311	2205 uw_check(ctx, INTS_MAX);
adamc@666	2206 sprintf(ctx->page.front, "%lld%n", n, &len);
adamc@666	2207 ctx->page.front += len;
phurst@1981	2208
adamc@428	2209 return uw_unit_v;
adamc@286	2210 }
adamc@286	2211
adam@1358	2212 char *uw_Basis_htmlifySpecialChar(uw_context ctx, unsigned char ch) {
adam@1358	2213 unsigned int n = ch;
adam@1358	2214 int len;
adam@1358	2215 char *r;
adam@1358	2216
adam@1358	2217 uw_check_heap(ctx, INTS_MAX+3);
adam@1358	2218 r = ctx->heap.front;
adam@1358	2219 sprintf(r, "&#%u;%n", n, &len);
adam@1358	2220 ctx->heap.front += len+1;
adam@1358	2221 return r;
adam@1358	2222 }
adam@1358	2223
adam@1358	2224 uw_unit uw_Basis_htmlifySpecialChar_w(uw_context ctx, unsigned char ch) {
adam@1358	2225 unsigned int n = ch;
adam@1358	2226 int len;
adam@1358	2227
adam@1358	2228 uw_check(ctx, INTS_MAX+3);
adam@1358	2229 sprintf(ctx->page.front, "&#%u;%n", n, &len);
adam@1358	2230 ctx->page.front += len;
adam@1358	2231 return uw_unit_v;
adam@1358	2232 }
adam@1358	2233
adamc@311	2234 char *uw_Basis_htmlifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@286	2235 int len;
adamc@286	2236 char *r;
adamc@286	2237
adamc@311	2238 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	2239 r = ctx->heap.front;
adamc@286	2240 sprintf(r, "%g%n", n, &len);
adamc@666	2241 ctx->heap.front += len+1;
adamc@286	2242 return r;
adamc@286	2243 }
adamc@286	2244
adamc@428	2245 uw_unit uw_Basis_htmlifyFloat_w(uw_context ctx, uw_Basis_float n) {
adamc@286	2246 int len;
adamc@286	2247
adamc@311	2248 uw_check(ctx, FLOATS_MAX);
adamc@666	2249 sprintf(ctx->page.front, "%g%n", n, &len);
adamc@666	2250 ctx->page.front += len;
adamc@428	2251
adamc@428	2252 return uw_unit_v;
adamc@286	2253 }
adamc@286	2254
adam@1365	2255 char *uw_Basis_jsifyTime(uw_context ctx, uw_Basis_time t) {
adam@1360	2256 int len;
adam@1360	2257 char *r;
adam@1360	2258
adam@1360	2259 uw_check_heap(ctx, INTS_MAX);
adam@1360	2260 r = ctx->heap.front;
adamc@1377	2261 sprintf(r, "%lld%n", (uw_Basis_int)t.seconds * 1000000 + t.microseconds, &len);
adam@1360	2262 ctx->heap.front += len+1;
adam@1360	2263 return r;
adam@1360	2264 }
adam@1360	2265
adam@1365	2266 uw_unit uw_Basis_jsifyInt_w(uw_context ctx, uw_Basis_int n) {
adam@1360	2267 int len;
adam@1360	2268
adam@1360	2269 uw_check(ctx, INTS_MAX);
adam@1360	2270 sprintf(ctx->page.front, "%lld%n", (uw_Basis_int)n, &len);
adam@1360	2271 ctx->page.front += len;
phurst@1981	2272
adam@1360	2273 return uw_unit_v;
adam@1360	2274 }
adam@1360	2275
adam@1444	2276 char uw_Basis_htmlifyString(uw_context ctx, const char s) {
adamc@137	2277 char r, s2;
adamc@137	2278
adamc@311	2279 uw_check_heap(ctx, strlen(s) * 5 + 1);
adamc@137	2280
adamc@666	2281 for (r = s2 = ctx->heap.front; *s; s++) {
adamc@1054	2282 unsigned char c = *s;
adamc@137	2283
adamc@137	2284 switch (c) {
adamc@137	2285 case '<':
adamc@137	2286 strcpy(s2, "<");
adamc@137	2287 s2 += 4;
adamc@137	2288 break;
adamc@137	2289 case '&':
adamc@137	2290 strcpy(s2, "&");
adamc@137	2291 s2 += 5;
adamc@137	2292 break;
adamc@137	2293 default:
adamc@1059	2294 *s2++ = c;
adamc@137	2295 }
adamc@137	2296 }
adamc@137	2297
adamc@137	2298 *s2++ = 0;
adamc@666	2299 ctx->heap.front = s2;
adamc@137	2300 return r;
adamc@135	2301 }
adamc@135	2302
adamc@428	2303 uw_unit uw_Basis_htmlifyString_w(uw_context ctx, uw_Basis_string s) {
adamc@321	2304 uw_check(ctx, strlen(s) * 6);
adamc@135	2305
adamc@135	2306 for (; *s; s++) {
adamc@1054	2307 unsigned char c = *s;
adamc@135	2308
adamc@135	2309 switch (c) {
adamc@135	2310 case '<':
adamc@311	2311 uw_write_unsafe(ctx, "<");
adamc@135	2312 break;
adamc@135	2313 case '&':
adamc@311	2314 uw_write_unsafe(ctx, "&");
adamc@135	2315 break;
adamc@135	2316 default:
adamc@1059	2317 uw_writec_unsafe(ctx, c);
adamc@135	2318 }
adamc@135	2319 }
adamc@428	2320
adamc@428	2321 return uw_unit_v;
adamc@135	2322 }
adamc@180	2323
adamc@311	2324 uw_Basis_string uw_Basis_htmlifyBool(uw_context ctx, uw_Basis_bool b) {
adamc@311	2325 if (b == uw_Basis_False)
adamc@286	2326 return "False";
adamc@286	2327 else
adamc@286	2328 return "True";
adamc@286	2329 }
adamc@286	2330
adamc@428	2331 uw_unit uw_Basis_htmlifyBool_w(uw_context ctx, uw_Basis_bool b) {
adamc@311	2332 if (b == uw_Basis_False) {
adamc@311	2333 uw_check(ctx, 6);
adamc@666	2334 strcpy(ctx->page.front, "False");
adamc@666	2335 ctx->page.front += 5;
adamc@286	2336 } else {
adamc@311	2337 uw_check(ctx, 5);
adamc@666	2338 strcpy(ctx->page.front, "True");
adamc@666	2339 ctx->page.front += 4;
adamc@286	2340 }
adamc@428	2341
adamc@428	2342 return uw_unit_v;
adamc@286	2343 }
adamc@286	2344
adamc@436	2345 #define TIME_FMT "%x %X"
adamc@438	2346 #define TIME_FMT_PG "%Y-%m-%d %T"
adam@1632	2347 #define TIME_FMT_JS "%Y/%m/%d %T"
adamc@436	2348
adam@1629	2349 uw_Basis_string uw_Basis_timeToString(uw_context, uw_Basis_time);
adam@1629	2350
adamc@436	2351 uw_Basis_string uw_Basis_htmlifyTime(uw_context ctx, uw_Basis_time t) {
adam@1629	2352 return uw_Basis_htmlifyString(ctx, uw_Basis_timeToString(ctx, t));
adamc@436	2353 }
adamc@436	2354
adamc@436	2355 uw_unit uw_Basis_htmlifyTime_w(uw_context ctx, uw_Basis_time t) {
adam@1629	2356 return uw_Basis_htmlifyString_w(ctx, uw_Basis_timeToString(ctx, t));
adamc@436	2357 }
adamc@436	2358
adam@1446	2359 char *uw_Basis_htmlifySource(uw_context ctx, uw_Basis_source src) {
adam@1446	2360 int len;
adam@1446	2361 char *r;
adam@1446	2362
adam@1446	2363 uw_check_heap(ctx, 2 * INTS_MAX + 2);
adam@1446	2364 r = ctx->heap.front;
adam@1446	2365 sprintf(r, "s%d_%llu%n", src.context, src.source, &len);
adam@1446	2366 ctx->heap.front += len+1;
adam@1446	2367 return r;
adam@1446	2368 }
adam@1446	2369
adam@1446	2370 uw_unit uw_Basis_htmlifySource_w(uw_context ctx, uw_Basis_source src) {
adam@1446	2371 int len;
adam@1446	2372
adam@1446	2373 uw_check(ctx, 2 * INTS_MAX + 1);
adam@1446	2374 sprintf(ctx->page.front, "s%d_%llu%n", src.context, src.source, &len);
adam@1446	2375 ctx->page.front += len;
phurst@1981	2376
adam@1446	2377 return uw_unit_v;
adam@1446	2378 }
adam@1446	2379
adamc@821	2380 uw_Basis_char uw_Basis_strsub(uw_context ctx, uw_Basis_string s, uw_Basis_int n) {
adam@1388	2381 while (n >= 0) {
adam@1388	2382 if (*s == 0)
adam@1388	2383 uw_error(ctx, FATAL, "Out-of-bounds strsub");
adam@1388	2384
adam@1388	2385 if (n == 0)
adam@1388	2386 return *s;
adam@1388	2387
adam@1388	2388 --n;
adam@1388	2389 ++s;
adam@1388	2390 }
adam@1388	2391
adam@1388	2392 uw_error(ctx, FATAL, "Negative strsub bound");
adamc@821	2393 }
adamc@821	2394
adamc@821	2395 uw_Basis_string uw_Basis_strsuffix(uw_context ctx, uw_Basis_string s, uw_Basis_int n) {
adam@1388	2396 while (n >= 0) {
adam@1388	2397 if (*s == 0 \|\| n == 0)
adam@1388	2398 return s;
adam@1388	2399
adam@1388	2400 --n;
adam@1388	2401 ++s;
adam@1388	2402 }
adam@1388	2403
adam@1388	2404 uw_error(ctx, FATAL, "Negative strsuffix bound");
adamc@821	2405 }
adamc@821	2406
adamc@828	2407 uw_Basis_int uw_Basis_strlen(uw_context ctx, uw_Basis_string s) {
adamc@828	2408 return strlen(s);
adamc@828	2409 }
adamc@828	2410
adam@1388	2411 uw_Basis_bool uw_Basis_strlenGe(uw_context ctx, uw_Basis_string s, uw_Basis_int n) {
adam@1388	2412 while (n > 0) {
adam@1388	2413 if (*s == 0)
adam@1388	2414 return uw_Basis_False;
adam@1388	2415
adam@1388	2416 --n;
adam@1388	2417 ++s;
adam@1388	2418 }
adam@1388	2419
adam@1388	2420 return uw_Basis_True;
adam@1388	2421 }
adam@1388	2422
adamc@829	2423 uw_Basis_string uw_Basis_strchr(uw_context ctx, uw_Basis_string s, uw_Basis_char ch) {
adamc@829	2424 return strchr(s, ch);
adamc@829	2425 }
adamc@829	2426
adamc@831	2427 uw_Basis_int uw_Basis_strcspn(uw_context ctx, uw_Basis_string s, uw_Basis_string chs) {
adamc@831	2428 return strcspn(s, chs);
adamc@831	2429 }
adamc@831	2430
adamc@829	2431 uw_Basis_int *uw_Basis_strindex(uw_context ctx, uw_Basis_string s, uw_Basis_char ch) {
adamc@829	2432 uw_Basis_string r = strchr(s, ch);
adamc@829	2433 if (r == NULL)
adamc@829	2434 return NULL;
adamc@829	2435 else {
adamc@829	2436 uw_Basis_int *nr = uw_malloc(ctx, sizeof(uw_Basis_int));
adamc@829	2437 *nr = r - s;
adamc@829	2438 return nr;
adamc@829	2439 }
adamc@829	2440 }
adamc@829	2441
adam@1390	2442 uw_Basis_int uw_Basis_strsindex(uw_context ctx, const char haystack, const char *needle) {
adam@1390	2443 uw_Basis_string r = strstr(haystack, needle);
adam@1390	2444 if (r == NULL)
adam@1390	2445 return NULL;
adam@1390	2446 else {
adam@1390	2447 uw_Basis_int *nr = uw_malloc(ctx, sizeof(uw_Basis_int));
adam@1390	2448 *nr = r - haystack;
adam@1390	2449 return nr;
adam@1390	2450 }
adam@1390	2451 }
adam@1390	2452
adamc@311	2453 uw_Basis_string uw_Basis_strcat(uw_context ctx, uw_Basis_string s1, uw_Basis_string s2) {
adamc@828	2454 int len = uw_Basis_strlen(ctx, s1) + uw_Basis_strlen(ctx, s2) + 1;
adamc@180	2455 char *s;
adamc@180	2456
adamc@311	2457 uw_check_heap(ctx, len);
adamc@180	2458
adamc@666	2459 s = ctx->heap.front;
adamc@180	2460
adamc@180	2461 strcpy(s, s1);
adamc@180	2462 strcat(s, s2);
adamc@666	2463 ctx->heap.front += len;
adamc@180	2464
adamc@180	2465 return s;
adamc@180	2466 }
adamc@278	2467
adamc@829	2468 uw_Basis_string uw_Basis_substring(uw_context ctx, uw_Basis_string s, uw_Basis_int start, uw_Basis_int len) {
adamc@829	2469 size_t full_len = uw_Basis_strlen(ctx, s);
adamc@829	2470
adamc@829	2471 if (start < 0)
adamc@829	2472 uw_error(ctx, FATAL, "substring: Negative start index");
adamc@829	2473 if (len < 0)
adamc@829	2474 uw_error(ctx, FATAL, "substring: Negative length");
adamc@829	2475 if (start + len > full_len)
adamc@829	2476 uw_error(ctx, FATAL, "substring: Start index plus length is too large");
adamc@829	2477
adamc@829	2478 if (start + len == full_len)
adamc@829	2479 return &s[start];
adamc@829	2480 else {
adamc@829	2481 uw_Basis_string r = uw_malloc(ctx, len+1);
adamc@959	2482 memcpy(r, s+start, len);
adamc@829	2483 r[len] = 0;
adamc@829	2484 return r;
adamc@829	2485 }
phurst@1981	2486
adamc@829	2487 }
adamc@829	2488
adamc@1023	2489 uw_Basis_string uw_Basis_str1(uw_context ctx, uw_Basis_char ch) {
adamc@1023	2490 char *r;
adamc@1023	2491
adamc@1023	2492 uw_check_heap(ctx, 2);
adamc@1023	2493 r = ctx->heap.front;
adamc@1023	2494 r[0] = ch;
adamc@1023	2495 r[1] = 0;
adamc@1023	2496
adamc@1023	2497 ctx->heap.front += 2;
adamc@1023	2498
adamc@1023	2499 return r;
adamc@1023	2500 }
adamc@1023	2501
adamc@737	2502 uw_Basis_string uw_strdup(uw_context ctx, uw_Basis_string s1) {
adamc@828	2503 int len = uw_Basis_strlen(ctx, s1) + 1;
adamc@278	2504 char *s;
adamc@278	2505
adamc@311	2506 uw_check_heap(ctx, len);
adamc@278	2507
adamc@666	2508 s = ctx->heap.front;
adamc@278	2509
adamc@278	2510 strcpy(s, s1);
adamc@666	2511 ctx->heap.front += len;
adamc@278	2512
adamc@278	2513 return s;
adamc@278	2514 }
adamc@280	2515
adam@1295	2516 uw_Basis_string uw_dup_and_clear_error_message(uw_context ctx) {
adam@1295	2517 if (ctx->error_message[0]) {
adam@1295	2518 char *s = uw_strdup(ctx, ctx->error_message);
adam@1295	2519 ctx->error_message[0] = 0;
adam@1295	2520 return s;
adam@1295	2521 } else
adam@1295	2522 return NULL;
adam@1295	2523 }
adam@1295	2524
adamc@737	2525 uw_Basis_string uw_maybe_strdup(uw_context ctx, uw_Basis_string s1) {
adamc@493	2526 if (s1)
adamc@737	2527 return uw_strdup(ctx, s1);
adamc@493	2528 else
adamc@493	2529 return NULL;
adamc@493	2530 }
adamc@493	2531
adamc@742	2532 char uw_memdup(uw_context ctx, const char p, size_t len) {
adamc@742	2533 char *r = uw_malloc(ctx, len);
adamc@742	2534 memcpy(r, p, len);
adamc@742	2535 return r;
adamc@742	2536 }
adamc@280	2537
adamc@879	2538 char *uw_sqlfmtInt = "%lld::int8%n";
adamc@879	2539
adamc@311	2540 char *uw_Basis_sqlifyInt(uw_context ctx, uw_Basis_int n) {
adamc@281	2541 int len;
adamc@281	2542 char *r;
adamc@281	2543
adamc@311	2544 uw_check_heap(ctx, INTS_MAX + 6);
adamc@666	2545 r = ctx->heap.front;
adamc@879	2546 sprintf(r, uw_sqlfmtInt, n, &len);
adamc@666	2547 ctx->heap.front += len+1;
adamc@281	2548 return r;
adamc@281	2549 }
adamc@281	2550
adamc@467	2551 char uw_Basis_sqlifyIntN(uw_context ctx, uw_Basis_int n) {
adamc@467	2552 if (n == NULL)
adamc@467	2553 return "NULL";
adamc@467	2554 else
adamc@467	2555 return uw_Basis_sqlifyInt(ctx, *n);
adamc@467	2556 }
adamc@467	2557
adam@1920	2558 char *uw_sqlfmtFloat = "%.16g::float8%n";
adamc@879	2559
adamc@311	2560 char *uw_Basis_sqlifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@281	2561 int len;
adamc@281	2562 char *r;
adamc@281	2563
adamc@311	2564 uw_check_heap(ctx, FLOATS_MAX + 8);
adamc@666	2565 r = ctx->heap.front;
adamc@879	2566 sprintf(r, uw_sqlfmtFloat, n, &len);
adamc@666	2567 ctx->heap.front += len+1;
adamc@281	2568 return r;
adamc@281	2569 }
adamc@281	2570
adamc@467	2571 char uw_Basis_sqlifyFloatN(uw_context ctx, uw_Basis_float n) {
adamc@467	2572 if (n == NULL)
adamc@467	2573 return "NULL";
adamc@467	2574 else
adamc@467	2575 return uw_Basis_sqlifyFloat(ctx, *n);
adamc@467	2576 }
adamc@467	2577
adam@1834	2578 int uw_Estrings = 1, uw_sql_type_annotations = 1;
adamc@879	2579 char *uw_sqlsuffixString = "::text";
adamc@1011	2580 char *uw_sqlsuffixChar = "::char";
adamc@281	2581
adamc@311	2582 uw_Basis_string uw_Basis_sqlifyString(uw_context ctx, uw_Basis_string s) {
adamc@280	2583 char r, s2;
adamc@280	2584
adamc@879	2585 uw_check_heap(ctx, strlen(s) * 2 + 3 + uw_Estrings + strlen(uw_sqlsuffixString));
adamc@280	2586
adamc@666	2587 r = s2 = ctx->heap.front;
adamc@879	2588 if (uw_Estrings)
adamc@879	2589 *s2++ = 'E';
adamc@280	2590 *s2++ = '\'';
adamc@280	2591
adamc@280	2592 for (; *s; s++) {
adamc@280	2593 char c = *s;
adamc@280	2594
adamc@280	2595 switch (c) {
adamc@280	2596 case '\'':
adamc@885	2597 if (uw_Estrings)
adamc@885	2598 strcpy(s2, "\\'");
adamc@885	2599 else
adamc@885	2600 strcpy(s2, "''");
adamc@280	2601 s2 += 2;
adamc@280	2602 break;
adamc@280	2603 case '\\':
adamc@885	2604 if (uw_Estrings) {
adamc@885	2605 strcpy(s2, "\\\\");
adamc@885	2606 s2 += 2;
adamc@885	2607 } else
adamc@885	2608 *s2++ = '\\';
adamc@280	2609 break;
adamc@280	2610 default:
adamc@1150	2611 if (isprint((int)c))
adamc@280	2612 *s2++ = c;
adamc@879	2613 else if (uw_Estrings) {
adam@1857	2614 sprintf(s2, "\\%03o", (unsigned char)c);
adamc@280	2615 s2 += 4;
adamc@280	2616 }
adamc@879	2617 else
adam@1689	2618 *s2++ = c; // I hope this is safe to do... don't know how to support UTF-8 outside Postgres otherwise!
adamc@280	2619 }
adamc@280	2620 }
adamc@280	2621
adamc@879	2622 *s2++ = '\'';
adamc@879	2623 strcpy(s2, uw_sqlsuffixString);
adamc@879	2624 ctx->heap.front = s2 + 1 + strlen(uw_sqlsuffixString);
adamc@280	2625 return r;
adamc@280	2626 }
adamc@281	2627
adamc@1011	2628 uw_Basis_string uw_Basis_sqlifyChar(uw_context ctx, uw_Basis_char c) {
adamc@1011	2629 char r, s2;
adamc@1011	2630
adamc@1011	2631 uw_check_heap(ctx, 5 + uw_Estrings + strlen(uw_sqlsuffixChar));
adamc@1011	2632
adamc@1011	2633 r = s2 = ctx->heap.front;
adamc@1011	2634 if (uw_Estrings)
adamc@1011	2635 *s2++ = 'E';
adamc@1011	2636 *s2++ = '\'';
adamc@1011	2637
adamc@1011	2638 switch (c) {
adamc@1011	2639 case '\'':
adamc@1011	2640 if (uw_Estrings)
adamc@1011	2641 strcpy(s2, "\\'");
adamc@1011	2642 else
adamc@1011	2643 strcpy(s2, "''");
adamc@1011	2644 s2 += 2;
adamc@1011	2645 break;
adamc@1011	2646 case '\\':
adamc@1011	2647 if (uw_Estrings) {
adamc@1011	2648 strcpy(s2, "\\\\");
adamc@1011	2649 s2 += 2;
adamc@1011	2650 } else
adamc@1011	2651 *s2++ = '\\';
adamc@1011	2652 break;
adamc@1011	2653 default:
adamc@1150	2654 if (isprint((int)c))
adamc@1011	2655 *s2++ = c;
adamc@1011	2656 else if (uw_Estrings) {
adam@1857	2657 sprintf(s2, "\\%03o", (unsigned char)c);
adamc@1011	2658 s2 += 4;
adamc@1011	2659 }
adamc@1011	2660 else
adamc@1011	2661 uw_error(ctx, FATAL, "Non-printable character %u in char to SQLify", c);
adamc@1011	2662 }
adamc@1011	2663
adamc@1011	2664 *s2++ = '\'';
adamc@1011	2665 strcpy(s2, uw_sqlsuffixChar);
adamc@1011	2666 ctx->heap.front = s2 + 1 + strlen(uw_sqlsuffixChar);
adamc@1011	2667 return r;
adamc@1011	2668 }
adamc@1011	2669
adamc@879	2670 char *uw_sqlsuffixBlob = "::bytea";
adamc@879	2671
adam@1867	2672 uw_Basis_string uw_Basis_sqlifyBlob(uw_context ctx, uw_Basis_blob b) {
adamc@737	2673 char r, s2;
adamc@737	2674 size_t i;
adamc@737	2675
adam@1867	2676 uw_check_heap(ctx, b.size * 5 + 4 + strlen(uw_sqlsuffixBlob));
adamc@737	2677
adamc@737	2678 r = s2 = ctx->heap.front;
adamc@879	2679 if (uw_Estrings)
adamc@879	2680 *s2++ = 'E';
adam@1867	2681 else
adam@1867	2682 *s2++ = 'X';
adamc@737	2683 *s2++ = '\'';
adamc@737	2684
adamc@737	2685 for (i = 0; i < b.size; ++i) {
adam@1867	2686 unsigned char c = b.data[i];
adam@1867	2687
adam@1867	2688 if (uw_Estrings) {
adam@1867	2689 switch (c) {
adam@1867	2690 case '\'':
adamc@885	2691 strcpy(s2, "\\'");
adam@1867	2692 s2 += 2;
adam@1867	2693 break;
adam@1867	2694 case '\\':
adamc@885	2695 strcpy(s2, "\\\\\\\\");
adamc@885	2696 s2 += 4;
adam@1867	2697 break;
adam@1867	2698 default:
adam@1867	2699 if (isprint((int)c))
adam@1867	2700 *s2++ = c;
adam@1867	2701 else {
adam@1867	2702 sprintf(s2, "\\\\%03o", c);
adam@1867	2703 s2 += 5;
adam@1867	2704 }
adamc@737	2705 }
adam@1867	2706 } else {
adam@1867	2707 sprintf(s2, "%02X", c);
adam@1867	2708 s2 += 2;
adamc@737	2709 }
phurst@1981	2710 }
adamc@737	2711
adamc@879	2712 *s2++ = '\'';
adamc@879	2713 strcpy(s2, uw_sqlsuffixBlob);
adamc@879	2714 ctx->heap.front = s2 + 1 + strlen(uw_sqlsuffixBlob);
adamc@737	2715 return r;
adamc@737	2716 }
adamc@737	2717
adamc@682	2718 char *uw_Basis_sqlifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	2719 int len;
adamc@682	2720 char *r;
adamc@682	2721 unsigned long long combo = ((unsigned long long)chn.cli << 32) \| chn.chn;
adamc@682	2722
adamc@682	2723 uw_check_heap(ctx, INTS_MAX + 7);
adamc@682	2724 r = ctx->heap.front;
adamc@879	2725 sprintf(r, uw_sqlfmtInt, combo, &len);
adamc@682	2726 ctx->heap.front += len+1;
adamc@682	2727 return r;
adamc@682	2728 }
adamc@682	2729
adamc@682	2730 char *uw_Basis_attrifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	2731 int len;
adamc@682	2732 char *r;
adamc@682	2733 unsigned long long combo = ((unsigned long long)chn.cli << 32) \| chn.chn;
adamc@682	2734
adamc@682	2735 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	2736 r = ctx->heap.front;
adamc@682	2737 sprintf(r, "%lld%n", combo, &len);
adamc@682	2738 ctx->heap.front += len+1;
adamc@682	2739 return r;
adamc@682	2740 }
adamc@682	2741
adamc@879	2742 char *uw_sqlfmtUint4 = "%u::int4%n";
adamc@879	2743
adamc@682	2744 char *uw_Basis_sqlifyClient(uw_context ctx, uw_Basis_client cli) {
adamc@682	2745 int len;
adamc@682	2746 char *r;
adamc@682	2747
adamc@682	2748 uw_check_heap(ctx, INTS_MAX + 7);
adamc@682	2749 r = ctx->heap.front;
adamc@879	2750 sprintf(r, uw_sqlfmtUint4, cli, &len);
adamc@682	2751 ctx->heap.front += len+1;
adamc@682	2752 return r;
adamc@682	2753 }
adamc@682	2754
adamc@682	2755 char *uw_Basis_attrifyClient(uw_context ctx, uw_Basis_client cli) {
adamc@682	2756 int len;
adamc@682	2757 char *r;
adamc@682	2758
adamc@682	2759 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	2760 r = ctx->heap.front;
adamc@682	2761 sprintf(r, "%u%n", cli, &len);
adamc@682	2762 ctx->heap.front += len+1;
adamc@682	2763 return r;
adamc@682	2764 }
adamc@682	2765
adamc@467	2766 uw_Basis_string uw_Basis_sqlifyStringN(uw_context ctx, uw_Basis_string s) {
adamc@467	2767 if (s == NULL)
adamc@467	2768 return "NULL";
adamc@467	2769 else
adamc@467	2770 return uw_Basis_sqlifyString(ctx, s);
adamc@467	2771 }
adamc@467	2772
adamc@311	2773 char *uw_Basis_sqlifyBool(uw_context ctx, uw_Basis_bool b) {
adamc@311	2774 if (b == uw_Basis_False)
adamc@281	2775 return "FALSE";
adamc@281	2776 else
adamc@281	2777 return "TRUE";
adamc@281	2778 }
adamc@282	2779
adamc@467	2780 char uw_Basis_sqlifyBoolN(uw_context ctx, uw_Basis_bool b) {
adamc@467	2781 if (b == NULL)
adamc@467	2782 return "NULL";
adamc@467	2783 else
adamc@467	2784 return uw_Basis_sqlifyBool(ctx, *b);
adamc@467	2785 }
adamc@467	2786
adamc@439	2787 char *uw_Basis_sqlifyTime(uw_context ctx, uw_Basis_time t) {
adamc@439	2788 size_t len;
adamc@682	2789 char r, s;
adam@1392	2790 struct tm stm = {};
adam@1392	2791 stm.tm_isdst = -1;
adamc@682	2792
adam@1365	2793 if (localtime_r(&t.seconds, &stm)) {
adamc@682	2794 s = uw_malloc(ctx, TIMES_MAX);
adam@1364	2795 len = strftime(s, TIMES_MAX, TIME_FMT_PG, &stm);
adam@1834	2796 if (uw_sql_type_annotations) {
adam@1834	2797 if (t.microseconds) {
adam@1834	2798 r = uw_malloc(ctx, len + 21);
adam@1834	2799 sprintf(r, "'%s.%06u'::timestamp", s, t.microseconds);
adam@1834	2800 } else {
adam@1834	2801 r = uw_malloc(ctx, len + 14);
adam@1834	2802 sprintf(r, "'%s'::timestamp", s);
adam@1834	2803 }
adam@1367	2804 } else {
adam@1834	2805 r = uw_malloc(ctx, len + 3);
adam@1834	2806 sprintf(r, "'%s'", s);
adam@1367	2807 }
adamc@682	2808 return r;
adamc@682	2809 } else
adamc@682	2810 return "<Invalid time>";
adamc@682	2811 }
adamc@682	2812
adamc@682	2813 char *uw_Basis_attrifyTime(uw_context ctx, uw_Basis_time t) {
adamc@682	2814 size_t len;
adamc@439	2815 char *r;
adam@1392	2816 struct tm stm = {};
adam@1392	2817 stm.tm_isdst = -1;
adamc@439	2818
adam@1365	2819 if (localtime_r(&t.seconds, &stm)) {
adamc@439	2820 uw_check_heap(ctx, TIMES_MAX);
adamc@666	2821 r = ctx->heap.front;
adamc@439	2822 len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
adamc@666	2823 ctx->heap.front += len+1;
adamc@439	2824 return r;
adamc@439	2825 } else
adamc@439	2826 return "<Invalid time>";
adamc@439	2827 }
adamc@439	2828
adam@1364	2829 char *uw_Basis_ensqlTime(uw_context ctx, uw_Basis_time t) {
adam@1364	2830 size_t len;
adam@1364	2831 char *r;
adam@1392	2832 struct tm stm = {};
adam@1392	2833 stm.tm_isdst = -1;
adam@1364	2834
adam@1365	2835 if (localtime_r(&t.seconds, &stm)) {
adam@1364	2836 uw_check_heap(ctx, TIMES_MAX);
adam@1364	2837 r = ctx->heap.front;
adam@1365	2838 len = strftime(r, TIMES_MAX-7, TIME_FMT_PG, &stm);
adam@1365	2839 ctx->heap.front += len;
adam@1365	2840 sprintf(ctx->heap.front, ".%06u", t.microseconds);
adam@1365	2841 ctx->heap.front += 8;
adam@1364	2842 return r;
adam@1364	2843 } else
adam@1364	2844 return "<Invalid time>";
adam@1364	2845 }
adam@1364	2846
adamc@467	2847 char uw_Basis_sqlifyTimeN(uw_context ctx, uw_Basis_time t) {
adamc@467	2848 if (t == NULL)
adamc@467	2849 return "NULL";
adamc@467	2850 else
adamc@467	2851 return uw_Basis_sqlifyTime(ctx, *t);
adamc@467	2852 }
adamc@467	2853
adamc@311	2854 char *uw_Basis_ensqlBool(uw_Basis_bool b) {
adamc@311	2855 static uw_Basis_int true = 1;
adamc@311	2856 static uw_Basis_int false = 0;
adamc@282	2857
adamc@311	2858 if (b == uw_Basis_False)
adamc@282	2859 return (char *)&false;
adamc@282	2860 else
adamc@282	2861 return (char *)&true;
adamc@282	2862 }
adamc@284	2863
adamc@311	2864 uw_Basis_string uw_Basis_intToString(uw_context ctx, uw_Basis_int n) {
adamc@284	2865 int len;
adamc@284	2866 char *r;
adamc@284	2867
adamc@311	2868 uw_check_heap(ctx, INTS_MAX);
adamc@666	2869 r = ctx->heap.front;
adamc@284	2870 sprintf(r, "%lld%n", n, &len);
adamc@666	2871 ctx->heap.front += len+1;
adamc@284	2872 return r;
adamc@284	2873 }
adamc@285	2874
adamc@311	2875 uw_Basis_string uw_Basis_floatToString(uw_context ctx, uw_Basis_float n) {
adamc@285	2876 int len;
adamc@285	2877 char *r;
adamc@285	2878
adamc@311	2879 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	2880 r = ctx->heap.front;
adamc@285	2881 sprintf(r, "%g%n", n, &len);
adamc@666	2882 ctx->heap.front += len+1;
adamc@285	2883 return r;
adamc@285	2884 }
adamc@285	2885
adamc@821	2886 uw_Basis_string uw_Basis_charToString(uw_context ctx, uw_Basis_char ch) {
adamc@821	2887 char *r = uw_malloc(ctx, 2);
adamc@821	2888 r[0] = ch;
adamc@821	2889 r[1] = 0;
adamc@821	2890 return r;
adamc@821	2891 }
adamc@821	2892
adamc@311	2893 uw_Basis_string uw_Basis_boolToString(uw_context ctx, uw_Basis_bool b) {
adamc@311	2894 if (b == uw_Basis_False)
adamc@285	2895 return "False";
adamc@285	2896 else
adamc@285	2897 return "True";
adamc@285	2898 }
adamc@288	2899
adam@1359	2900 uw_Basis_string uw_Basis_timef(uw_context ctx, const char *fmt, uw_Basis_time t) {
adam@1352	2901 size_t len;
adam@1352	2902 char *r;
adam@1392	2903 struct tm stm = {};
adam@1392	2904 stm.tm_isdst = -1;
adam@1352	2905
adam@1365	2906 if (localtime_r(&t.seconds, &stm)) {
adam@1352	2907 uw_check_heap(ctx, TIMES_MAX);
adam@1352	2908 r = ctx->heap.front;
adam@1352	2909 len = strftime(r, TIMES_MAX, fmt, &stm);
adam@1352	2910 ctx->heap.front += len+1;
adam@1352	2911 return r;
adam@1352	2912 } else
adam@1352	2913 return "<Invalid time>";
adam@1352	2914 }
adam@1352	2915
adam@1629	2916 uw_Basis_string uw_Basis_timeToString(uw_context ctx, uw_Basis_time t) {
adam@1629	2917 return uw_Basis_timef(ctx, ctx->app->time_format, t);
adam@1629	2918 }
adam@1629	2919
adamc@311	2920 uw_Basis_int *uw_Basis_stringToInt(uw_context ctx, uw_Basis_string s) {
adamc@288	2921 char *endptr;
adamc@311	2922 uw_Basis_int n = strtoll(s, &endptr, 10);
adamc@288	2923
adamc@288	2924 if (s != '\0' && endptr == '\0') {
adamc@311	2925 uw_Basis_int *r = uw_malloc(ctx, sizeof(uw_Basis_int));
adamc@288	2926 *r = n;
adamc@288	2927 return r;
adamc@288	2928 } else
adamc@288	2929 return NULL;
adamc@288	2930 }
adamc@289	2931
adamc@311	2932 uw_Basis_float *uw_Basis_stringToFloat(uw_context ctx, uw_Basis_string s) {
adamc@289	2933 char *endptr;
adamc@311	2934 uw_Basis_float n = strtod(s, &endptr);
adamc@289	2935
adamc@289	2936 if (s != '\0' && endptr == '\0') {
adamc@311	2937 uw_Basis_float *r = uw_malloc(ctx, sizeof(uw_Basis_float));
adamc@289	2938 *r = n;
adamc@289	2939 return r;
adamc@289	2940 } else
adamc@289	2941 return NULL;
adamc@289	2942 }
adamc@289	2943
adamc@821	2944 uw_Basis_char *uw_Basis_stringToChar(uw_context ctx, uw_Basis_string s) {
adamc@821	2945 if (s[0] == 0) {
adamc@821	2946 uw_Basis_char *r = uw_malloc(ctx, 1);
adamc@821	2947 r[0] = 0;
adamc@821	2948 return r;
adamc@821	2949 } else if (s[1] != 0)
adamc@821	2950 return NULL;
adamc@821	2951 else {
adamc@821	2952 uw_Basis_char *r = uw_malloc(ctx, 1);
adamc@821	2953 r[0] = s[0];
adamc@821	2954 return r;
adamc@821	2955 }
adamc@821	2956 }
adamc@821	2957
adamc@311	2958 uw_Basis_bool *uw_Basis_stringToBool(uw_context ctx, uw_Basis_string s) {
adamc@311	2959 static uw_Basis_bool true = uw_Basis_True;
adamc@311	2960 static uw_Basis_bool false = uw_Basis_False;
adamc@289	2961
adamc@289	2962 if (!strcasecmp (s, "True"))
adamc@289	2963 return &true;
adamc@289	2964 else if (!strcasecmp (s, "False"))
adamc@289	2965 return &false;
adamc@289	2966 else
adamc@289	2967 return NULL;
adamc@289	2968 }
adamc@292	2969
adamc@436	2970 uw_Basis_time *uw_Basis_stringToTime(uw_context ctx, uw_Basis_string s) {
adamc@438	2971 char dot = strchr(s, '.'), end = strchr(s, 0);
adam@1374	2972 struct tm stm = {};
adam@1392	2973 stm.tm_isdst = -1;
adamc@436	2974
adamc@439	2975 if (dot) {
adamc@439	2976 *dot = 0;
adamc@439	2977 if (strptime(s, TIME_FMT_PG, &stm) == end) {
adamc@439	2978 *dot = '.';
adamc@439	2979 uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
adam@1365	2980 r->seconds = mktime(&stm);
adam@1365	2981 r->microseconds = 0;
adamc@439	2982 return r;
adamc@439	2983 }
adamc@439	2984 else {
adamc@439	2985 *dot = '.';
adamc@439	2986 return NULL;
adamc@439	2987 }
adamc@436	2988 }
adamc@439	2989 else {
adam@2072	2990 if (strptime(s, ctx->app->time_format, &stm) == end) {
adamc@439	2991 uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
adam@1365	2992 r->seconds = mktime(&stm);
adam@1365	2993 r->microseconds = 0;
adamc@439	2994 return r;
adam@2072	2995 } else if (strptime(s, TIME_FMT_PG, &stm) == end) {
adam@2072	2996 uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
adam@2072	2997 r->seconds = mktime(&stm);
adam@2072	2998 r->microseconds = 0;
adam@2072	2999 return r;
adam@2072	3000 } else if (strptime(s, TIME_FMT, &stm) == end) {
adamc@439	3001 uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
adam@1365	3002 r->seconds = mktime(&stm);
adam@1365	3003 r->microseconds = 0;
adamc@439	3004 return r;
adam@1632	3005 } else if (strptime(s, TIME_FMT_JS, &stm) == end) {
adam@1632	3006 uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
adam@1632	3007 r->seconds = mktime(&stm);
adam@1632	3008 r->microseconds = 0;
adam@1632	3009 return r;
adamc@439	3010 }
adamc@439	3011 else
adamc@439	3012 return NULL;
adamc@439	3013 }
adamc@436	3014 }
adamc@436	3015
adam@1352	3016 uw_Basis_time uw_Basis_stringToTimef(uw_context ctx, const char fmt, uw_Basis_string s) {
adam@1352	3017 char *end = strchr(s, 0);
adam@1374	3018 struct tm stm = {};
adam@1392	3019 stm.tm_isdst = -1;
adam@1352	3020
adam@1352	3021 if (strptime(s, fmt, &stm) == end) {
adam@1352	3022 uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
adam@1365	3023 r->seconds = mktime(&stm);
adam@1365	3024 r->microseconds = 0;
adam@1352	3025 return r;
adam@1352	3026 }
adam@1352	3027 else
adam@1352	3028 return NULL;
adam@1352	3029 }
adam@1352	3030
adamc@311	3031 uw_Basis_int uw_Basis_stringToInt_error(uw_context ctx, uw_Basis_string s) {
adamc@292	3032 char *endptr;
adamc@311	3033 uw_Basis_int n = strtoll(s, &endptr, 10);
adamc@292	3034
adamc@292	3035 if (s != '\0' && endptr == '\0')
adamc@292	3036 return n;
adamc@292	3037 else
adam@1444	3038 uw_error(ctx, FATAL, "Can't parse int: %s", uw_Basis_htmlifyString(ctx, s));
adamc@292	3039 }
adamc@293	3040
adamc@682	3041 #include <errno.h>
adamc@682	3042
adamc@678	3043 uw_Basis_channel uw_Basis_stringToChannel_error(uw_context ctx, uw_Basis_string s) {
adamc@682	3044 unsigned long long n;
adamc@682	3045
adamc@682	3046 if (sscanf(s, "%llu", &n) < 1)
adam@1444	3047 uw_error(ctx, FATAL, "Can't parse channel: %s", uw_Basis_htmlifyString(ctx, s));
adamc@682	3048 else {
adamc@682	3049 uw_Basis_channel ch = {n >> 32, n & ((1ull << 32) - 1)};
adamc@682	3050 return ch;
adamc@682	3051 }
adamc@682	3052 }
adamc@682	3053
adamc@682	3054 uw_Basis_client uw_Basis_stringToClient_error(uw_context ctx, uw_Basis_string s) {
adamc@678	3055 char *endptr;
adamc@682	3056 unsigned long n = strtoul(s, &endptr, 10);
adamc@678	3057
adamc@678	3058 if (s != '\0' && endptr == '\0')
adamc@678	3059 return n;
adamc@678	3060 else
adam@1444	3061 uw_error(ctx, FATAL, "Can't parse client: %s", uw_Basis_htmlifyString(ctx, s));
adamc@678	3062 }
adamc@678	3063
adamc@311	3064 uw_Basis_float uw_Basis_stringToFloat_error(uw_context ctx, uw_Basis_string s) {
adamc@293	3065 char *endptr;
adamc@311	3066 uw_Basis_float n = strtod(s, &endptr);
adamc@293	3067
adamc@293	3068 if (s != '\0' && endptr == '\0')
adamc@293	3069 return n;
adamc@293	3070 else
adam@1444	3071 uw_error(ctx, FATAL, "Can't parse float: %s", uw_Basis_htmlifyString(ctx, s));
adamc@293	3072 }
adamc@293	3073
adamc@821	3074 uw_Basis_char uw_Basis_stringToChar_error(uw_context ctx, uw_Basis_string s) {
adamc@821	3075 if (s[0] == 0)
adamc@821	3076 return 0;
adamc@821	3077 else if (s[1] != 0)
adam@1444	3078 uw_error(ctx, FATAL, "Can't parse char: %s", uw_Basis_htmlifyString(ctx, s));
adamc@821	3079 else
adamc@821	3080 return s[0];
adamc@821	3081 }
adamc@821	3082
adamc@311	3083 uw_Basis_bool uw_Basis_stringToBool_error(uw_context ctx, uw_Basis_string s) {
adamc@296	3084 if (!strcasecmp(s, "T") \|\| !strcasecmp (s, "True"))
adamc@311	3085 return uw_Basis_True;
adamc@296	3086 else if (!strcasecmp(s, "F") \|\| !strcasecmp (s, "False"))
adamc@311	3087 return uw_Basis_False;
adamc@293	3088 else
adam@1444	3089 uw_error(ctx, FATAL, "Can't parse bool: %s", uw_Basis_htmlifyString(ctx, s));
adamc@293	3090 }
adamc@436	3091
adam@1352	3092 uw_Basis_time uw_Basis_unsqlTime(uw_context ctx, uw_Basis_string s) {
adam@1352	3093 char dot = strchr(s, '.'), end = strchr(s, 0);
adam@1352	3094 struct tm stm = {};
adam@1392	3095 stm.tm_isdst = -1;
adam@1352	3096
adam@1352	3097 if (dot) {
adam@1352	3098 *dot = 0;
adam@1352	3099 if (strptime(s, TIME_FMT_PG, &stm)) {
adam@1352	3100 *dot = '.';
adam@1410	3101 char usec[] = "000000";
adam@1410	3102 int len = strlen(dot+1);
adam@1410	3103 memcpy(usec, dot+1, len < 6 ? len : 6);
adam@1410	3104 uw_Basis_time r = { mktime(&stm), atoi(usec) };
adam@1365	3105 return r;
adam@1352	3106 }
adam@1352	3107 else {
adam@1352	3108 *dot = '.';
adam@1444	3109 uw_error(ctx, FATAL, "Can't parse time: %s", uw_Basis_htmlifyString(ctx, s));
adam@1352	3110 }
adam@1352	3111 }
adam@1352	3112 else {
adam@1352	3113 if (strptime(s, TIME_FMT_PG, &stm) == end) {
adam@1365	3114 uw_Basis_time r = { mktime(&stm) };
adam@1365	3115 return r;
adam@1352	3116 } else if (strptime(s, TIME_FMT, &stm) == end) {
adam@1365	3117 uw_Basis_time r = { mktime(&stm) };
adam@1365	3118 return r;
adam@1352	3119 } else
adam@1444	3120 uw_error(ctx, FATAL, "Can't parse time: %s", uw_Basis_htmlifyString(ctx, s));
adam@1352	3121 }
adam@1352	3122 }
adam@1352	3123
adamc@436	3124 uw_Basis_time uw_Basis_stringToTime_error(uw_context ctx, uw_Basis_string s) {
adamc@438	3125 char dot = strchr(s, '.'), end = strchr(s, 0);
adamc@436	3126 struct tm stm = {};
adam@1392	3127 stm.tm_isdst = -1;
adamc@436	3128
adamc@438	3129 if (dot) {
adamc@438	3130 *dot = 0;
adamc@438	3131 if (strptime(s, TIME_FMT_PG, &stm)) {
adamc@438	3132 *dot = '.';
adam@1365	3133 {
adam@1365	3134 uw_Basis_time r = { mktime(&stm) };
adam@1365	3135 return r;
adam@1365	3136 }
adamc@438	3137 }
adamc@438	3138 else {
adamc@438	3139 *dot = '.';
adam@1444	3140 uw_error(ctx, FATAL, "Can't parse time: %s", uw_Basis_htmlifyString(ctx, s));
adamc@438	3141 }
adamc@438	3142 }
adamc@438	3143 else {
adam@2072	3144 if (strptime(s, ctx->app->time_format, &stm) == end) {
adam@2072	3145 uw_Basis_time r = { mktime(&stm) };
adam@2072	3146 return r;
adam@2072	3147 } else if (strptime(s, TIME_FMT_PG, &stm) == end) {
adam@1365	3148 uw_Basis_time r = { mktime(&stm) };
adam@1365	3149 return r;
adam@1365	3150 } else if (strptime(s, TIME_FMT, &stm) == end) {
adam@1365	3151 uw_Basis_time r = { mktime(&stm) };
adam@1365	3152 return r;
adam@1632	3153 } else if (strptime(s, TIME_FMT_JS, &stm) == end) {
adam@1632	3154 uw_Basis_time r = { mktime(&stm) };
adam@1632	3155 return r;
adam@1365	3156 } else
adam@1444	3157 uw_error(ctx, FATAL, "Can't parse time: %s", uw_Basis_htmlifyString(ctx, s));
adamc@438	3158 }
adamc@436	3159 }
adamc@457	3160
adam@1352	3161 uw_Basis_time uw_Basis_stringToTimef_error(uw_context ctx, const char *fmt, uw_Basis_string s) {
adam@1352	3162 char *end = strchr(s, 0);
adamc@939	3163 struct tm stm = {};
adam@1392	3164 stm.tm_isdst = -1;
adamc@939	3165
adam@1365	3166 if (strptime(s, fmt, &stm) == end) {
adam@1365	3167 uw_Basis_time r = { mktime(&stm) };
adam@1365	3168 return r;
adam@1365	3169 } else
adam@1444	3170 uw_error(ctx, FATAL, "Can't parse time: %s", uw_Basis_htmlifyString(ctx, s));
adamc@939	3171 }
adamc@939	3172
adamc@742	3173 uw_Basis_blob uw_Basis_stringToBlob_error(uw_context ctx, uw_Basis_string s, size_t len) {
adamc@742	3174 char *r = ctx->heap.front;
adamc@742	3175 uw_Basis_blob b = {len, r};
adamc@742	3176
adamc@742	3177 uw_check_heap(ctx, len);
adamc@742	3178
adam@1992	3179 if (s[0] == '\\' && s[1] == 'x') {
adam@1992	3180 s += 2;
adam@1992	3181
adam@1992	3182 while (*s) {
adam@1992	3183 int n;
adam@1992	3184 sscanf(s, "%02x", &n);
adam@1992	3185 *r++ = n;
adam@1992	3186 s += 2;
adam@1992	3187 }
adam@1992	3188 } else {
adam@1992	3189 while (*s) {
adam@1992	3190 if (s[0] == '\\') {
adam@1992	3191 if (s[1] == '\\') {
adam@1992	3192 *r++ = '\\';
adam@1992	3193 s += 2;
adam@1992	3194 } else if (isdigit((int)s[1]) && isdigit((int)s[2]) && isdigit((int)s[3])) {
adam@1992	3195 r++ = (s[1] - '0') 8 * 8 + ((s[2] - '0') * 8) + (s[3] - '0');
adam@1992	3196 s += 4;
adam@1992	3197 }
adam@1992	3198 else {
adam@1992	3199 *r++ = '\\';
adam@1992	3200 ++s;
adam@1992	3201 }
adam@1992	3202 } else {
adam@1992	3203 *r++ = s[0];
adamc@742	3204 ++s;
adamc@742	3205 }
adamc@742	3206 }
adamc@742	3207 }
adamc@742	3208
adamc@742	3209 b.size = r - ctx->heap.front;
adamc@742	3210 ctx->heap.front = r;
adam@1992	3211
adamc@742	3212 return b;
adamc@742	3213 }
adamc@742	3214
adam@1402	3215 #define THE_PAST "expires=Sat, 01-Jan-2011 00:00:00 GMT"
adamc@1052	3216
adamc@463	3217 uw_Basis_string uw_Basis_get_cookie(uw_context ctx, uw_Basis_string c) {
adamc@463	3218 int len = strlen(c);
adamc@854	3219 char *p = ctx->outHeaders.start;
adamc@474	3220
adamc@1134	3221 while ((p = strstr(p, "\nSet-Cookie: "))) {
adamc@474	3222 char *p2;
adamc@474	3223 p += 13;
adamc@474	3224 p2 = strchr(p, '=');
adamc@474	3225
adamc@474	3226 if (p2) {
adamc@474	3227 size_t sz = strcspn(p2+1, ";\r\n");
adamc@474	3228
adamc@474	3229 if (!strncasecmp(p, c, p2 - p)) {
adamc@1052	3230 if (sz == 0 && strstr(p2+2, THE_PAST))
adamc@1052	3231 return NULL;
adamc@1052	3232 else {
adamc@1052	3233 char *ret = uw_malloc(ctx, sz + 1);
adamc@1052	3234 memcpy(ret, p2+1, sz);
adamc@1052	3235 ret[sz] = 0;
adamc@1052	3236 return ret;
adamc@1052	3237 }
adamc@474	3238 }
adamc@474	3239 }
adamc@474	3240 }
adamc@463	3241
adamc@1134	3242 if ((p = uw_Basis_requestHeader(ctx, "Cookie"))) {
adamc@1051	3243 char *p2;
adamc@1051	3244
adamc@854	3245 while (1) {
adamc@1051	3246 if (!strncmp(p, c, len) && p[len] == '=') {
adamc@1134	3247 if ((p2 = strchr(p, ';'))) {
adamc@1051	3248 size_t n = p2 - (p + len);
adamc@1051	3249 char *r = uw_malloc(ctx, n);
adamc@1051	3250 memcpy(r, p + 1 + len, n-1);
adamc@1051	3251 r[n-1] = 0;
adamc@1051	3252 return r;
adamc@1051	3253 } else
adamc@1051	3254 return p + 1 + len;
adamc@1134	3255 } else if ((p = strchr(p, ';')))
adamc@854	3256 p += 2;
adamc@463	3257 else
adamc@463	3258 return NULL;
adamc@463	3259 }
adamc@463	3260 }
adamc@792	3261
adamc@792	3262 return NULL;
adamc@457	3263 }
adamc@462	3264
adam@1877	3265 static void set_cookie(uw_context ctx) {
adam@1877	3266 if (ctx->usedSig)
adam@1877	3267 ctx->needsResig = 1;
adam@1877	3268 }
adam@1877	3269
adamc@1050	3270 uw_unit uw_Basis_set_cookie(uw_context ctx, uw_Basis_string prefix, uw_Basis_string c, uw_Basis_string v, uw_Basis_time *expires, uw_Basis_bool secure) {
adamc@462	3271 uw_write_header(ctx, "Set-Cookie: ");
adamc@462	3272 uw_write_header(ctx, c);
adamc@462	3273 uw_write_header(ctx, "=");
adamc@462	3274 uw_write_header(ctx, v);
adamc@466	3275 uw_write_header(ctx, "; path=");
adamc@466	3276 uw_write_header(ctx, prefix);
adamc@1050	3277 if (expires) {
adamc@1050	3278 char formatted[30];
adam@1392	3279 struct tm tm = {};
adam@1392	3280 tm.tm_isdst = -1;
adamc@1050	3281
adam@1365	3282 gmtime_r(&expires->seconds, &tm);
adamc@1050	3283
adamc@1050	3284 strftime(formatted, sizeof formatted, "%a, %d-%b-%Y %T GMT", &tm);
adamc@1050	3285
adamc@1050	3286 uw_write_header(ctx, "; expires=");
adamc@1050	3287 uw_write_header(ctx, formatted);
adamc@1050	3288 }
adamc@1050	3289 if (secure)
adamc@1050	3290 uw_write_header(ctx, "; secure");
adamc@462	3291 uw_write_header(ctx, "\r\n");
adam@1877	3292 set_cookie(ctx);
adamc@462	3293
adamc@462	3294 return uw_unit_v;
adamc@462	3295 }
adamc@667	3296
adamc@1050	3297 uw_unit uw_Basis_clear_cookie(uw_context ctx, uw_Basis_string prefix, uw_Basis_string c) {
adamc@1050	3298 uw_write_header(ctx, "Set-Cookie: ");
adamc@1050	3299 uw_write_header(ctx, c);
adamc@1050	3300 uw_write_header(ctx, "=; path=");
adamc@1050	3301 uw_write_header(ctx, prefix);
adamc@1052	3302 uw_write_header(ctx, "; " THE_PAST "\r\n");
adam@1877	3303 set_cookie(ctx);
adamc@1050	3304
adamc@1050	3305 return uw_unit_v;
adamc@1050	3306 }
adamc@1050	3307
adamc@1113	3308 size_t uw_deltas_max = SIZE_MAX;
adamc@1113	3309
adamc@682	3310 static delta *allocate_delta(uw_context ctx, unsigned client) {
adamc@682	3311 unsigned i;
adamc@682	3312 delta *d;
adamc@671	3313
adamc@682	3314 for (i = 0; i < ctx->used_deltas; ++i)
adamc@682	3315 if (ctx->deltas[i].client == client)
adamc@682	3316 return &ctx->deltas[i];
adamc@671	3317
adamc@682	3318 if (ctx->used_deltas >= ctx->n_deltas) {
adamc@1113	3319 if (ctx->n_deltas + 1 > uw_deltas_max)
adamc@1113	3320 uw_error(ctx, FATAL, "Exceeded limit on number of deltas");
adamc@1113	3321
adamc@682	3322 ctx->deltas = realloc(ctx->deltas, sizeof(delta) * ++ctx->n_deltas);
adam@1369	3323 uw_buffer_init(uw_messages_max, &ctx->deltas[ctx->n_deltas-1].msgs, 0);
adamc@682	3324 }
adamc@671	3325
adamc@682	3326 d = &ctx->deltas[ctx->used_deltas++];
adamc@682	3327 d->client = client;
adam@1369	3328 uw_buffer_reset(&d->msgs);
adamc@682	3329 return d;
adamc@671	3330 }
adamc@671	3331
adamc@668	3332 uw_Basis_channel uw_Basis_new_channel(uw_context ctx, uw_unit u) {
adamc@682	3333 if (ctx->client == NULL)
adamc@682	3334 uw_error(ctx, FATAL, "Attempt to create channel on request not associated with a persistent connection");
adamc@671	3335
adamc@682	3336 return new_channel(ctx->client);
adamc@668	3337 }
adamc@668	3338
adamc@668	3339 uw_unit uw_Basis_send(uw_context ctx, uw_Basis_channel chn, uw_Basis_string msg) {
adamc@682	3340 delta *d = allocate_delta(ctx, chn.cli);
adamc@682	3341 size_t len;
adamc@682	3342 int preLen;
adamc@682	3343 char pre[INTS_MAX + 2];
adamc@668	3344
adamc@682	3345 len = strlen(msg);
adamc@682	3346
adamc@682	3347 sprintf(pre, "%u\n%n", chn.chn, &preLen);
adamc@682	3348
adam@1369	3349 ctx_uw_buffer_append(ctx, "messages", &d->msgs, pre, preLen);
adam@1369	3350 ctx_uw_buffer_append(ctx, "messages", &d->msgs, msg, len);
adam@1369	3351 ctx_uw_buffer_append(ctx, "messages", &d->msgs, "\n", 1);
adamc@671	3352
adamc@671	3353 return uw_unit_v;
adamc@668	3354 }
adamc@671	3355
adam@1327	3356 int uw_rollback(uw_context ctx, int will_retry) {
adamc@1131	3357 int i;
adamc@1131	3358 cleanup *cl;
adamc@1131	3359
adamc@1131	3360 if (ctx->client)
adamc@1131	3361 release_client(ctx->client);
adamc@1131	3362
adamc@1131	3363 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adamc@1131	3364 cl->func(cl->arg);
adamc@1131	3365
adamc@1131	3366 ctx->cleanup_front = ctx->cleanup;
adamc@1131	3367
adamc@1131	3368 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@1131	3369 if (ctx->transactionals[i].rollback != NULL)
adamc@1131	3370 ctx->transactionals[i].rollback(ctx->transactionals[i].data);
adamc@1131	3371
adamc@1131	3372 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@1131	3373 if (ctx->transactionals[i].free)
adam@1327	3374 ctx->transactionals[i].free(ctx->transactionals[i].data, will_retry);
adamc@1131	3375
adam@1941	3376 if (ctx->app && ctx->transaction_started) {
adam@1941	3377 ctx->transaction_started = 0;
adam@1941	3378 return ctx->app->db_rollback(ctx);
adam@1941	3379 } else
adam@1941	3380 return 0;
adamc@1131	3381 }
adamc@1131	3382
adam@1956	3383 const char uw_begin_xhtml[] = "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\" lang=\"en\">";
adam@1956	3384 const char uw_begin_html5[] = "<!DOCTYPE html><html>";
adam@1728	3385
adam@1877	3386 extern int uw_hash_blocksize;
adam@1877	3387
adam@1877	3388 static const char sig_intro[] = "<input type=\"hidden\" name=\"Sig\" value=\"";
adam@1877	3389
adam@1877	3390 static char find_sig(char haystack) {
adam@1877	3391 int i;
adam@1877	3392 char *s = strstr(haystack, sig_intro);
adam@1877	3393
adam@1877	3394 if (!s \|\| strlen(haystack) - (s - haystack) - (sizeof sig_intro - 1) < uw_hash_blocksize*2+1)
adam@1877	3395 return NULL;
phurst@1981	3396
adam@1877	3397 s += sizeof sig_intro - 1;
adam@1877	3398
adam@1877	3399 for (i = 0; i < uw_hash_blocksize*2; ++i)
adam@1877	3400 if (!isxdigit((int)s[i]))
adam@1877	3401 return NULL;
adam@1877	3402
adam@1877	3403 if (s[i] != '"')
adam@1877	3404 return NULL;
adam@1877	3405
adam@1877	3406 return s;
adam@1877	3407 }
adam@1877	3408
adam@2033	3409 static pthread_mutex_t message_send_mutex = PTHREAD_MUTEX_INITIALIZER;
adam@2033	3410
adam@1938	3411 int uw_commit(uw_context ctx) {
adamc@1104	3412 int i;
adam@1877	3413 char *sig;
adamc@1104	3414
adamc@1131	3415 if (uw_has_error(ctx)) {
adam@1327	3416 uw_rollback(ctx, 0);
adam@1938	3417 return 0;
adamc@1131	3418 }
adamc@1131	3419
adamc@1104	3420 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@771	3421 if (ctx->transactionals[i].rollback != NULL)
adamc@1131	3422 if (ctx->transactionals[i].commit) {
adamc@1083	3423 ctx->transactionals[i].commit(ctx->transactionals[i].data);
adamc@1131	3424 if (uw_has_error(ctx)) {
adam@1327	3425 uw_rollback(ctx, 0);
adam@1938	3426 return 0;
adamc@1131	3427 }
adamc@1131	3428 }
adamc@771	3429
adam@2033	3430 // Here's an important lock to provide the abstraction that all messages from one transaction are sent as an atomic unit.
adam@2033	3431 if (ctx->used_deltas > 0)
adam@2033	3432 pthread_mutex_lock(&message_send_mutex);
adam@2033	3433
adam@2000	3434 if (ctx->transaction_started) {
adam@2000	3435 int code = ctx->app->db_commit(ctx);
adam@2000	3436
adam@2000	3437 if (code) {
adam@2033	3438 if (ctx->used_deltas > 0)
adam@2033	3439 pthread_mutex_unlock(&message_send_mutex);
adam@2033	3440
adam@2000	3441 if (ctx->client)
adam@2000	3442 release_client(ctx->client);
adam@2000	3443
adam@2000	3444 if (code == -1) {
adam@2000	3445 // This case is for a serialization failure, which is not really an "error."
adam@2000	3446 // The transaction will restart, so we should rollback any transactionals
adam@2000	3447 // that triggered above.
adam@2000	3448
adam@2000	3449 for (i = ctx->used_transactionals-1; i >= 0; --i)
adam@2000	3450 if (ctx->transactionals[i].rollback != NULL)
adam@2000	3451 ctx->transactionals[i].rollback(ctx->transactionals[i].data);
adam@2000	3452
adam@2000	3453 for (i = ctx->used_transactionals-1; i >= 0; --i)
adam@2000	3454 if (ctx->transactionals[i].free)
adam@2000	3455 ctx->transactionals[i].free(ctx->transactionals[i].data, 1);
adam@2000	3456
grrwlf@2030	3457 return 1;
adam@2000	3458 }
adam@2000	3459
adam@2000	3460 for (i = ctx->used_transactionals-1; i >= 0; --i)
adam@2000	3461 if (ctx->transactionals[i].free)
adam@2000	3462 ctx->transactionals[i].free(ctx->transactionals[i].data, 0);
adam@2000	3463
adam@2000	3464 uw_set_error_message(ctx, "Error running SQL COMMIT");
adam@2000	3465 return 0;
adam@2000	3466 }
adam@2000	3467 }
adam@2000	3468
adamc@1104	3469 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@771	3470 if (ctx->transactionals[i].rollback == NULL)
adamc@1131	3471 if (ctx->transactionals[i].commit) {
adamc@1083	3472 ctx->transactionals[i].commit(ctx->transactionals[i].data);
adamc@1131	3473 if (uw_has_error(ctx)) {
adam@2033	3474 if (ctx->used_deltas > 0)
adam@2033	3475 pthread_mutex_unlock(&message_send_mutex);
adam@2033	3476
adam@2033	3477 if (ctx->client)
adam@2033	3478 release_client(ctx->client);
adam@2033	3479
adam@2033	3480 for (i = ctx->used_transactionals-1; i >= 0; --i)
adam@2033	3481 if (ctx->transactionals[i].rollback != NULL)
adam@2033	3482 ctx->transactionals[i].rollback(ctx->transactionals[i].data);
adam@2033	3483
adam@2033	3484 for (i = ctx->used_transactionals-1; i >= 0; --i)
adam@2033	3485 if (ctx->transactionals[i].free)
adam@2033	3486 ctx->transactionals[i].free(ctx->transactionals[i].data, 0);
adam@2000	3487
adam@1938	3488 return 0;
adamc@1131	3489 }
adamc@1131	3490 }
adamc@1131	3491
adamc@682	3492 for (i = 0; i < ctx->used_deltas; ++i) {
adamc@682	3493 delta *d = &ctx->deltas[i];
adamc@682	3494 client *c = find_client(d->client);
adamc@682	3495
adam@1551	3496 assert (c != NULL);
adam@1551	3497 assert(c->mode == USED);
adamc@682	3498
adam@1447	3499 client_send(c, &d->msgs, ctx->script.start, uw_buffer_used(&ctx->script));
adamc@682	3500 }
adamc@682	3501
adam@2033	3502 if (ctx->used_deltas > 0)
adam@2033	3503 pthread_mutex_unlock(&message_send_mutex);
adam@2033	3504
adamc@682	3505 if (ctx->client)
adamc@685	3506 release_client(ctx->client);
adamc@771	3507
adamc@1104	3508 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@1083	3509 if (ctx->transactionals[i].free)
adam@1327	3510 ctx->transactionals[i].free(ctx->transactionals[i].data, 0);
adamc@916	3511
vshabanoff@1726	3512 uw_check(ctx, 1);
vshabanoff@1726	3513 *ctx->page.front = 0;
adam@1413	3514
adam@1956	3515 if (!ctx->returning_indirectly
adam@1956	3516 && (ctx->app->is_html5
adam@1956	3517 ? !strncmp(ctx->page.start, uw_begin_html5, sizeof uw_begin_html5 - 1)
adam@1956	3518 : !strncmp(ctx->page.start, uw_begin_xhtml, sizeof uw_begin_xhtml - 1))) {
adam@1728	3519 char *s;
adam@1728	3520
adam@1728	3521 // Splice script data into appropriate part of page, also adding <head> if needed.
adam@1956	3522 s = ctx->page.start + (ctx->app->is_html5 ? sizeof uw_begin_html5 - 1 : sizeof uw_begin_xhtml - 1);
adam@1728	3523 s = strchr(s, '<');
adam@1728	3524 if (s == NULL) {
adam@1728	3525 // Weird. Document has no tags!
adam@1728	3526
adam@1728	3527 uw_write(ctx, "<head></head><body></body>");
adam@1728	3528 uw_check(ctx, 1);
adam@1728	3529 *ctx->page.front = 0;
adam@1728	3530 } else if (!strncmp(s, "<head>", 6)) {
adam@1728	3531 // <head> is present. Let's add the <script> tags immediately after it.
adam@1728	3532
adam@1729	3533 // Any freeform JavaScript to include?
adam@1729	3534 if (uw_buffer_used(&ctx->script) > 0) {
adam@1729	3535 size_t lenH = strlen(ctx->script_header), len = uw_buffer_used(&ctx->script);
adam@1729	3536 size_t lenP = lenH + 40 + len;
adam@1729	3537 char start = s + 6, oldPage = ctx->page.start;
adam@1729	3538
adam@1729	3539 ctx_uw_buffer_check(ctx, "page", &ctx->page, uw_buffer_used(&ctx->page) + lenP);
adam@1729	3540 start += ctx->page.start - oldPage;
adam@1729	3541 memmove(start + lenP, start, uw_buffer_used(&ctx->page) - (start - ctx->page.start) + 1);
adam@1729	3542 ctx->page.front += lenP;
adam@1729	3543 memcpy(start, ctx->script_header, lenH);
adam@1729	3544 memcpy(start + lenH, "<script type=\"text/javascript\">", 31);
adam@1729	3545 memcpy(start + lenH + 31, ctx->script.start, len);
adam@1729	3546 memcpy(start + lenH + 31 + len, "</script>", 9);
adam@1729	3547 } else {
adam@1729	3548 size_t lenH = strlen(ctx->script_header);
adam@1729	3549 char start = s + 6, oldPage = ctx->page.start;
adam@1729	3550
adam@1729	3551 ctx_uw_buffer_check(ctx, "page", &ctx->page, uw_buffer_used(&ctx->page) + lenH);
adam@1729	3552 start += ctx->page.start - oldPage;
adam@1729	3553 memmove(start + lenH, start, uw_buffer_used(&ctx->page) - (start - ctx->page.start) + 1);
adam@1729	3554 ctx->page.front += lenH;
adam@1729	3555 memcpy(start, ctx->script_header, lenH);
adam@1729	3556 }
adam@1728	3557 } else {
adam@1728	3558 // No <head>. At this point, add it, with <script> tags inside.
adam@1728	3559
adam@1729	3560 if (uw_buffer_used(&ctx->script) > 0) {
adam@1729	3561 size_t lenH = strlen(ctx->script_header), len = uw_buffer_used(&ctx->script);
adam@1729	3562 size_t lenP = lenH + 53 + len;
adam@1729	3563 char start = s, oldPage = ctx->page.start;
adam@1729	3564
adam@1729	3565 ctx_uw_buffer_check(ctx, "page", &ctx->page, uw_buffer_used(&ctx->page) + lenP);
adam@1729	3566 start += ctx->page.start - oldPage;
adam@1729	3567 memmove(start + lenP, start, uw_buffer_used(&ctx->page) - (start - ctx->page.start) + 1);
adam@1729	3568 ctx->page.front += lenP;
adam@1729	3569 memcpy(start, "<head>", 6);
adam@1729	3570 memcpy(start + 6, ctx->script_header, lenH);
adam@1729	3571 memcpy(start + 6 + lenH, "<script type=\"text/javascript\">", 31);
adam@1729	3572 memcpy(start + 6 + lenH + 31, ctx->script.start, len);
adam@1729	3573 memcpy(start + 6 + lenH + 31 + len, "</script></head>", 16);
adam@1729	3574 } else {
adam@1729	3575 size_t lenH = strlen(ctx->script_header);
adam@1729	3576 size_t lenP = lenH + 13;
adam@1729	3577 char start = s, oldPage = ctx->page.start;
adam@1729	3578
adam@1729	3579 ctx_uw_buffer_check(ctx, "page", &ctx->page, uw_buffer_used(&ctx->page) + lenP);
adam@1729	3580 start += ctx->page.start - oldPage;
adam@1729	3581 memmove(start + lenP, start, uw_buffer_used(&ctx->page) - (start - ctx->page.start) + 1);
adam@1729	3582 ctx->page.front += lenP;
adam@1729	3583 memcpy(start, "<head>", 6);
adam@1729	3584 memcpy(start + 6, ctx->script_header, lenH);
adam@1729	3585 memcpy(start + 6 + lenH, "</head>", 7);
adam@1729	3586 }
adamc@916	3587 }
adamc@916	3588 }
adam@1877	3589
adam@1877	3590 if (ctx->needsResig) {
adam@1877	3591 sig = find_sig(ctx->page.start);
adam@1877	3592 if (sig) {
adam@1877	3593 char *realsig = ctx->app->cookie_sig(ctx);
adam@1877	3594
adam@1877	3595 do {
adam@1877	3596 memcpy(sig, realsig, 2*uw_hash_blocksize);
adam@1877	3597 sig = find_sig(sig);
adam@1877	3598 } while (sig);
adam@1877	3599 }
adam@1877	3600 }
adam@1938	3601
adam@1938	3602 return 0;
adamc@671	3603 }
adamc@671	3604
adamc@683	3605
adamc@1113	3606 size_t uw_transactionals_max = SIZE_MAX;
adamc@1113	3607
adam@2001	3608 int uw_register_transactional(uw_context ctx, void *data, uw_callback commit, uw_callback rollback,
adam@1327	3609 uw_callback_with_retry free) {
adamc@771	3610 if (ctx->used_transactionals >= ctx->n_transactionals) {
adamc@1113	3611 if (ctx->used_transactionals+1 > uw_transactionals_max)
adam@2001	3612 // Exceeded limit on number of transactionals.
adam@2001	3613 return -1;
adamc@1084	3614 ctx->transactionals = realloc(ctx->transactionals, sizeof(transactional) * (ctx->used_transactionals+1));
adamc@771	3615 ++ctx->n_transactionals;
adamc@771	3616 }
adamc@771	3617
adamc@771	3618 ctx->transactionals[ctx->used_transactionals].data = data;
adamc@771	3619 ctx->transactionals[ctx->used_transactionals].commit = commit;
adamc@771	3620 ctx->transactionals[ctx->used_transactionals].rollback = rollback;
adamc@771	3621 ctx->transactionals[ctx->used_transactionals++].free = free;
adam@2001	3622
adam@2001	3623 return 0;
adamc@771	3624 }
adamc@771	3625
adamc@683	3626
adamc@683	3627 // "Garbage collection"
adamc@683	3628
adamc@1121	3629 void uw_do_expunge(uw_context ctx, uw_Basis_client cli, void *data);
adamc@1121	3630 void uw_post_expunge(uw_context ctx, void *data);
adamc@1121	3631
adamc@1121	3632 static failure_kind uw_expunge(uw_context ctx, uw_Basis_client cli, void *data) {
adamc@683	3633 int r = setjmp(ctx->jmp_buf);
adamc@683	3634
adamc@1121	3635 if (r == 0)
adamc@1121	3636 uw_do_expunge(ctx, cli, data);
adamc@1121	3637 else
adamc@1121	3638 ctx->app->db_rollback(ctx);
adamc@1121	3639
adamc@1121	3640 uw_post_expunge(ctx, data);
adamc@683	3641
adamc@683	3642 return r;
adamc@683	3643 }
adamc@683	3644
adamc@683	3645 void uw_prune_clients(uw_context ctx) {
adamc@683	3646 client c, next, *prev = NULL;
adamc@683	3647 time_t cutoff;
adamc@683	3648
adamc@1094	3649 cutoff = time(NULL) - ctx->app->timeout;
adamc@683	3650
adamc@683	3651 pthread_mutex_lock(&clients_mutex);
adam@1707	3652 pruning_thread = pthread_self();
adam@1707	3653 pruning_thread_initialized = 1;
adamc@683	3654
adamc@683	3655 for (c = clients_used; c; c = next) {
adamc@683	3656 next = c->next;
adamc@683	3657 pthread_mutex_lock(&c->lock);
adamc@685	3658 if (c->last_contact < cutoff && c->refcount == 0) {
adamc@683	3659 failure_kind fk = UNLIMITED_RETRY;
adamc@683	3660 if (prev)
adamc@683	3661 prev->next = next;
adamc@683	3662 else
adamc@683	3663 clients_used = next;
adamc@683	3664 while (fk == UNLIMITED_RETRY) {
adam@1941	3665 uw_reset(ctx);
adamc@1121	3666 fk = uw_expunge(ctx, c->id, c->data);
adamc@1121	3667 if (fk == UNLIMITED_RETRY)
adamc@684	3668 printf("Unlimited retry during expunge: %s\n", uw_error_message(ctx));
adamc@683	3669 }
adamc@684	3670 if (fk == SUCCESS)
adamc@684	3671 free_client(c);
adamc@1121	3672 else
adamc@856	3673 fprintf(stderr, "Expunge blocked by error: %s\n", uw_error_message(ctx));
adamc@683	3674 }
adamc@683	3675 else
adamc@683	3676 prev = c;
adamc@683	3677 pthread_mutex_unlock(&c->lock);
adamc@683	3678 }
adamc@683	3679
adamc@683	3680 pthread_mutex_unlock(&clients_mutex);
adamc@683	3681 }
adamc@687	3682
adamc@687	3683 failure_kind uw_initialize(uw_context ctx) {
adamc@687	3684 int r = setjmp(ctx->jmp_buf);
adamc@687	3685
adamc@687	3686 if (r == 0) {
adam@1936	3687 uw_ensure_transaction(ctx);
adamc@1094	3688 ctx->app->initializer(ctx);
adam@2296	3689 if (uw_commit(ctx))
adamc@687	3690 uw_error(ctx, FATAL, "Error running SQL COMMIT");
adamc@687	3691 }
adamc@687	3692
adamc@687	3693 return r;
adamc@687	3694 }
adamc@717	3695
adamc@1065	3696 static int url_bad(uw_Basis_string s) {
adamc@1065	3697 for (; *s; ++s)
adamc@1153	3698 if (!isgraph((int)*s))
adamc@1065	3699 return 1;
adamc@1065	3700
adamc@1065	3701 return 0;
adamc@1065	3702 }
adamc@1065	3703
adamc@717	3704 uw_Basis_string uw_Basis_bless(uw_context ctx, uw_Basis_string s) {
adamc@1065	3705 if (url_bad(s))
adamc@1065	3706 uw_error(ctx, FATAL, "Invalid URL %s", uw_Basis_htmlifyString(ctx, s));
adamc@1094	3707 if (ctx->app->check_url(s))
adamc@770	3708 return s;
adamc@770	3709 else
adamc@770	3710 uw_error(ctx, FATAL, "Disallowed URL %s", uw_Basis_htmlifyString(ctx, s));
adamc@717	3711 }
adamc@734	3712
adamc@770	3713 uw_Basis_string uw_Basis_checkUrl(uw_context ctx, uw_Basis_string s) {
adamc@1065	3714 if (url_bad(s))
adamc@1065	3715 return NULL;
adamc@1094	3716 if (ctx->app->check_url(s))
adamc@770	3717 return s;
adamc@770	3718 else
adamc@770	3719 return NULL;
adamc@770	3720 }
adamc@770	3721
adam@1465	3722 static int mime_format(const char *s) {
adamc@770	3723 for (; *s; ++s)
grrwlf@2024	3724 if (!isalnum((int)s) && s != '/' && s != '-' && s != '.' && *s != '+')
adamc@770	3725 return 0;
adamc@770	3726
adamc@770	3727 return 1;
adamc@770	3728 }
adamc@770	3729
adamc@741	3730 uw_Basis_string uw_Basis_blessMime(uw_context ctx, uw_Basis_string s) {
adamc@770	3731 if (!mime_format(s))
adamc@770	3732 uw_error(ctx, FATAL, "MIME type \"%s\" contains invalid character", uw_Basis_htmlifyString(ctx, s));
adamc@770	3733
adamc@1094	3734 if (ctx->app->check_mime(s))
adamc@770	3735 return s;
adamc@770	3736 else
adamc@770	3737 uw_error(ctx, FATAL, "Disallowed MIME type %s", uw_Basis_htmlifyString(ctx, s));
adamc@770	3738 }
adamc@770	3739
adamc@770	3740 uw_Basis_string uw_Basis_checkMime(uw_context ctx, uw_Basis_string s) {
adamc@770	3741 if (!mime_format(s))
adamc@770	3742 return NULL;
adamc@770	3743
adamc@1094	3744 if (ctx->app->check_mime(s))
adamc@770	3745 return s;
adamc@770	3746 else
adamc@770	3747 return NULL;
adamc@741	3748 }
adamc@741	3749
adam@1465	3750 uw_Basis_string uw_Basis_blessRequestHeader(uw_context ctx, uw_Basis_string s) {
adam@1465	3751 if (!mime_format(s))
adam@1465	3752 uw_error(ctx, FATAL, "Request header \"%s\" contains invalid character", uw_Basis_htmlifyString(ctx, s));
adam@1465	3753
adam@1465	3754 if (ctx->app->check_requestHeader(s))
adam@1465	3755 return s;
adam@1465	3756 else
adam@1465	3757 uw_error(ctx, FATAL, "Disallowed request header %s", uw_Basis_htmlifyString(ctx, s));
adam@1465	3758 }
adam@1465	3759
adam@1465	3760 uw_Basis_string uw_Basis_checkRequestHeader(uw_context ctx, uw_Basis_string s) {
adam@1465	3761 if (!mime_format(s))
adam@1465	3762 return NULL;
adam@1465	3763
adam@1465	3764 if (ctx->app->check_requestHeader(s))
adam@1465	3765 return s;
adam@1465	3766 else
adam@1465	3767 return NULL;
adam@1465	3768 }
adam@1465	3769
adam@1465	3770 uw_Basis_string uw_Basis_blessResponseHeader(uw_context ctx, uw_Basis_string s) {
adam@1465	3771 if (!mime_format(s))
adam@1465	3772 uw_error(ctx, FATAL, "Response header \"%s\" contains invalid character", uw_Basis_htmlifyString(ctx, s));
adam@1465	3773
adam@1465	3774 if (ctx->app->check_responseHeader(s))
adam@1465	3775 return s;
adam@1465	3776 else
adam@1465	3777 uw_error(ctx, FATAL, "Disallowed response header %s", uw_Basis_htmlifyString(ctx, s));
adam@1465	3778 }
adam@1465	3779
adam@1799	3780 static int envVar_format(const char *s) {
adam@1799	3781 for (; *s; ++s)
adam@1799	3782 if (!isalnum((int)s) && s != '_' && *s != '.')
adam@1799	3783 return 0;
adam@1799	3784
adam@1799	3785 return 1;
adam@1799	3786 }
adam@1799	3787
adam@1465	3788 uw_Basis_string uw_Basis_checkResponseHeader(uw_context ctx, uw_Basis_string s) {
adam@1799	3789 if (!envVar_format(s))
adam@1465	3790 return NULL;
adam@1465	3791
adam@1465	3792 if (ctx->app->check_responseHeader(s))
adam@1465	3793 return s;
adam@1465	3794 else
adam@1465	3795 return NULL;
adam@1465	3796 }
adam@1465	3797
adam@1799	3798 uw_Basis_string uw_Basis_blessEnvVar(uw_context ctx, uw_Basis_string s) {
adam@1799	3799 if (!envVar_format(s))
adam@1799	3800 uw_error(ctx, FATAL, "Environment variable \"%s\" contains invalid character", uw_Basis_htmlifyString(ctx, s));
adam@1799	3801
adam@1799	3802 if (ctx->app->check_envVar(s))
adam@1799	3803 return s;
adam@1799	3804 else
adam@1799	3805 uw_error(ctx, FATAL, "Disallowed environment variable %s", uw_Basis_htmlifyString(ctx, s));
adam@1799	3806 }
adam@1799	3807
adam@1799	3808 uw_Basis_string uw_Basis_checkEnvVar(uw_context ctx, uw_Basis_string s) {
adam@1799	3809 if (!mime_format(s))
adam@1799	3810 return NULL;
adam@1799	3811
adam@1799	3812 if (ctx->app->check_envVar(s))
adam@1799	3813 return s;
adam@1799	3814 else
adam@1799	3815 return NULL;
adam@1799	3816 }
adam@1799	3817
adam@1465	3818 uw_Basis_string uw_Basis_getHeader(uw_context ctx, uw_Basis_string name) {
adam@1465	3819 return uw_Basis_requestHeader(ctx, name);
adam@1465	3820 }
adam@1465	3821
adam@1465	3822 static int mime_value_format(const char *s) {
adam@1465	3823 for (; *s; ++s)
adam@1465	3824 if (s == '\r' \|\| s == '\n')
adam@1465	3825 return 0;
adam@1465	3826
adam@1465	3827 return 1;
adam@1465	3828 }
adam@1465	3829
adam@1465	3830 uw_unit uw_Basis_setHeader(uw_context ctx, uw_Basis_string name, uw_Basis_string value) {
adam@1465	3831 if (!mime_value_format(value))
adam@1465	3832 uw_error(ctx, FATAL, "Invalid value for HTTP response header");
adam@1465	3833
adam@1465	3834 uw_write_header(ctx, name);
adam@1465	3835 uw_write_header(ctx, ": ");
adam@1465	3836 uw_write_header(ctx, value);
adam@1465	3837 uw_write_header(ctx, "\r\n");
adam@1465	3838
adam@1465	3839 return uw_unit_v;
adam@1465	3840 }
adam@1465	3841
adam@1799	3842 uw_Basis_string uw_Basis_getenv(uw_context ctx, uw_Basis_string name) {
adam@1993	3843 if (ctx->get_env)
adam@1993	3844 return ctx->get_env(ctx->get_env_data, name);
adam@1993	3845 else
adam@1994	3846 return getenv(name);
adam@1799	3847 }
adam@1799	3848
adamc@734	3849 uw_Basis_string uw_unnull(uw_Basis_string s) {
adamc@734	3850 return s ? s : "";
adamc@734	3851 }
adamc@734	3852
adamc@734	3853 uw_Basis_string uw_Basis_makeSigString(uw_context ctx, uw_Basis_string sig) {
adamc@734	3854 uw_Basis_string r = uw_malloc(ctx, 2 * uw_hash_blocksize + 1);
adamc@734	3855 int i;
phurst@1981	3856
adamc@734	3857 for (i = 0; i < uw_hash_blocksize; ++i)
adamc@734	3858 sprintf(&r[2i], "%.02X", ((unsigned char )sig)[i]);
adamc@734	3859
adamc@734	3860 return r;
adamc@734	3861 }
adamc@734	3862
adam@1512	3863 /* This bit of crafty code is intended to prevent GCC from performing
adam@1512	3864 * optimizations that would enable timing attacks. See:
adam@1512	3865 * http://www.impredicative.com/pipermail/ur/2011-July/000659.html
adam@1512	3866 */
adam@1512	3867 int uw_streq(uw_Basis_string s1, uw_Basis_string s2) {
adam@1512	3868 int i, x = 0, len1 = strlen(s1);
adam@1512	3869
adam@1512	3870 if (len1 != strlen(s2)) return 0;
adam@1512	3871
adam@1512	3872 for (i = 0; i < len1; ++i) {
adam@1512	3873 __asm__ __volatile__ ("");
adam@1512	3874 x \|= s1[i] ^ s2[i];
adam@1512	3875 }
adam@1512	3876
adam@1512	3877 return x == 0;
adam@1512	3878 }
adam@1512	3879
adamc@734	3880 uw_Basis_string uw_Basis_sigString(uw_context ctx, uw_unit u) {
adam@1877	3881 ctx->usedSig = 1;
adamc@1094	3882 return ctx->app->cookie_sig(ctx);
adamc@734	3883 }
adamc@737	3884
adamc@737	3885 uw_Basis_string uw_Basis_fileName(uw_context ctx, uw_Basis_file f) {
adamc@737	3886 return f.name;
adamc@737	3887 }
adamc@737	3888
adamc@740	3889 uw_Basis_string uw_Basis_fileMimeType(uw_context ctx, uw_Basis_file f) {
adamc@740	3890 return f.type;
adamc@740	3891 }
adamc@740	3892
adamc@745	3893 uw_Basis_int uw_Basis_blobSize(uw_context ctx, uw_Basis_blob b) {
adamc@745	3894 return b.size;
adamc@745	3895 }
adamc@745	3896
adamc@1119	3897 uw_Basis_blob uw_Basis_textBlob(uw_context ctx, uw_Basis_string s) {
adamc@1119	3898 uw_Basis_blob b = {strlen(s), s};
adamc@1119	3899
adamc@1119	3900 return b;
adamc@1119	3901 }
adamc@1119	3902
adamc@737	3903 uw_Basis_blob uw_Basis_fileData(uw_context ctx, uw_Basis_file f) {
adamc@737	3904 return f.data;
adamc@737	3905 }
adamc@741	3906
adam@1347	3907 uw_Basis_string uw_Basis_postType(uw_context ctx, uw_Basis_postBody pb) {
adam@1347	3908 return pb.type;
adam@1347	3909 }
adam@1347	3910
adam@1347	3911 uw_Basis_string uw_Basis_postData(uw_context ctx, uw_Basis_postBody pb) {
adam@1347	3912 return pb.data;
adam@1347	3913 }
adam@1347	3914
adam@1471	3915 static char *old_headers(uw_context ctx) {
adam@1471	3916 if (uw_buffer_used(&ctx->outHeaders) == 0)
adam@1471	3917 return NULL;
adam@1471	3918 else {
adam@1471	3919 char *s = strchr(ctx->outHeaders.start, '\n');
adam@1471	3920
adam@1471	3921 if (s == NULL \|\| strncasecmp(s+1, "Content-type: ", 14))
adam@1471	3922 return NULL;
adam@1471	3923 else {
adam@1471	3924 s = strchr(s+15, '\n');
adam@1471	3925 if (s == NULL)
adam@1471	3926 return NULL;
adam@1471	3927 else
adam@1471	3928 return uw_strdup(ctx, s+1);
adam@1471	3929 }
adam@1471	3930 }
adam@1471	3931 }
adam@1471	3932
adamc@741	3933 __attribute__((noreturn)) void uw_return_blob(uw_context ctx, uw_Basis_blob b, uw_Basis_string mimeType) {
adamc@741	3934 cleanup *cl;
adamc@741	3935 int len;
adam@1471	3936 char *oldh;
adamc@741	3937
adam@1451	3938 if (!ctx->allowed_to_return_indirectly)
adam@1451	3939 uw_error(ctx, FATAL, "Tried to return a blob from an RPC");
adam@1451	3940
adamc@1065	3941 ctx->returning_indirectly = 1;
adam@1471	3942 oldh = old_headers(ctx);
adam@1369	3943 uw_buffer_reset(&ctx->outHeaders);
adam@1369	3944 uw_buffer_reset(&ctx->page);
adamc@741	3945
adamc@856	3946 uw_write_header(ctx, on_success);
adamc@856	3947 uw_write_header(ctx, "Content-Type: ");
adamc@741	3948 uw_write_header(ctx, mimeType);
adam@1934	3949 uw_write_header(ctx, "\r\nContent-length: ");
adam@1369	3950 ctx_uw_buffer_check(ctx, "headers", &ctx->outHeaders, INTS_MAX);
adamc@1134	3951 sprintf(ctx->outHeaders.front, "%lu%n", (unsigned long)b.size, &len);
adamc@741	3952 ctx->outHeaders.front += len;
adamc@1066	3953 uw_write_header(ctx, "\r\n");
adam@1471	3954 if (oldh) uw_write_header(ctx, oldh);
adamc@741	3955
adam@1369	3956 ctx_uw_buffer_append(ctx, "page", &ctx->page, b.data, b.size);
adamc@741	3957
adamc@741	3958 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adamc@741	3959 cl->func(cl->arg);
adamc@741	3960
adamc@741	3961 ctx->cleanup_front = ctx->cleanup;
adamc@741	3962
adamc@1065	3963 longjmp(ctx->jmp_buf, RETURN_INDIRECTLY);
adamc@1065	3964 }
adamc@1065	3965
adam@2046	3966 void uw_replace_page(uw_context ctx, const char *data, size_t size) {
adam@2046	3967 uw_buffer_reset(&ctx->page);
adam@2046	3968 ctx_uw_buffer_append(ctx, "page", &ctx->page, data, size);
adam@2046	3969 }
adam@2046	3970
adam@1932	3971 __attribute__((noreturn)) void uw_return_blob_from_page(uw_context ctx, uw_Basis_string mimeType) {
adam@1932	3972 cleanup *cl;
adam@1932	3973 int len;
adam@1932	3974 char *oldh;
adam@1932	3975
adam@1932	3976 if (!ctx->allowed_to_return_indirectly)
adam@1932	3977 uw_error(ctx, FATAL, "Tried to return a blob from an RPC");
adam@1932	3978
adam@1932	3979 ctx->returning_indirectly = 1;
adam@1932	3980 oldh = old_headers(ctx);
adam@1932	3981 uw_buffer_reset(&ctx->outHeaders);
adam@1932	3982
adam@1932	3983 uw_write_header(ctx, on_success);
adam@1932	3984 uw_write_header(ctx, "Content-Type: ");
adam@1932	3985 uw_write_header(ctx, mimeType);
adam@1934	3986 uw_write_header(ctx, "\r\nContent-length: ");
adam@1932	3987 ctx_uw_buffer_check(ctx, "headers", &ctx->outHeaders, INTS_MAX);
adam@1932	3988 sprintf(ctx->outHeaders.front, "%lu%n", (unsigned long)uw_buffer_used(&ctx->page), &len);
adam@1932	3989 ctx->outHeaders.front += len;
adam@1932	3990 uw_write_header(ctx, "\r\n");
adam@1932	3991 if (oldh) uw_write_header(ctx, oldh);
adam@1932	3992
adam@1932	3993 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adam@1932	3994 cl->func(cl->arg);
adam@1932	3995
adam@1932	3996 ctx->cleanup_front = ctx->cleanup;
adam@1932	3997
adam@1932	3998 longjmp(ctx->jmp_buf, RETURN_INDIRECTLY);
adam@1932	3999 }
adam@1932	4000
adamc@1065	4001 __attribute__((noreturn)) void uw_redirect(uw_context ctx, uw_Basis_string url) {
adamc@1065	4002 cleanup *cl;
adamc@1066	4003 char *s;
adam@1471	4004 char *oldh;
adamc@1065	4005
adam@1451	4006 if (!ctx->allowed_to_return_indirectly)
adam@1451	4007 uw_error(ctx, FATAL, "Tried to redirect from an RPC");
adam@1451	4008
adamc@1065	4009 ctx->returning_indirectly = 1;
adam@1471	4010 oldh = old_headers(ctx);
adam@1369	4011 uw_buffer_reset(&ctx->page);
adam@1369	4012 ctx_uw_buffer_check(ctx, "page", &ctx->page, uw_buffer_used(&ctx->outHeaders)+1);
adam@1369	4013 memcpy(ctx->page.start, ctx->outHeaders.start, uw_buffer_used(&ctx->outHeaders));
adam@1369	4014 ctx->page.start[uw_buffer_used(&ctx->outHeaders)] = 0;
adam@1369	4015 uw_buffer_reset(&ctx->outHeaders);
adamc@1065	4016
adam@1409	4017 if (on_success[0])
adam@1409	4018 uw_write_header(ctx, on_redirect);
adam@1409	4019 else
adam@1409	4020 uw_write_header(ctx, "Status: 303 See Other\r\n");
adam@1409	4021 s = on_success[0] ? strchr(ctx->page.start, '\n') : ctx->page.start;
adamc@1066	4022 if (s) {
adamc@1066	4023 char *s2;
adam@1409	4024 if (s[0] == '\n') ++s;
adam@1409	4025 for (; (s2 = strchr(s, '\n')); s = s2+1) {
adamc@1066	4026 *s2 = 0;
adamc@1066	4027 if (!strncmp(s, "Set-Cookie: ", 12)) {
adamc@1066	4028 uw_write_header(ctx, s);
adamc@1066	4029 uw_write_header(ctx, "\n");
adamc@1066	4030 }
adamc@1066	4031 }
adamc@1066	4032 }
adamc@1066	4033
adamc@1065	4034 uw_write_header(ctx, "Location: ");
adamc@1065	4035 uw_write_header(ctx, url);
adamc@1065	4036 uw_write_header(ctx, "\r\n\r\n");
adam@1471	4037 if (oldh) uw_write_header(ctx, oldh);
adamc@1065	4038
adamc@1065	4039 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adamc@1065	4040 cl->func(cl->arg);
adamc@1065	4041
adamc@1065	4042 ctx->cleanup_front = ctx->cleanup;
adamc@1065	4043
adamc@1065	4044 longjmp(ctx->jmp_buf, RETURN_INDIRECTLY);
adamc@741	4045 }
adamc@874	4046
adamc@874	4047 uw_Basis_string uw_Basis_unAs(uw_context ctx, uw_Basis_string s) {
adam@1467	4048 uw_Basis_string ret = uw_malloc(ctx, strlen(s) + 1), r = ret;
adamc@874	4049
adamc@874	4050 for (; *s; ++s) {
adamc@874	4051 if (s[0] == '\'') {
adamc@874	4052 *r++ = '\'';
adamc@874	4053 for (++s; *s; ++s) {
adamc@874	4054 if (s[0] == '\'') {
adamc@874	4055 *r++ = '\'';
adamc@874	4056 break;
adamc@874	4057 } else if (s[0] == '\\') {
adam@1467	4058 *r++ = '\\';
adam@1467	4059 *r++ = s[1];
adam@1467	4060 ++s;
adamc@874	4061 } else
adamc@874	4062 *r++ = s[0];
adamc@874	4063 }
adamc@874	4064 if (*s == 0) break;
adam@1467	4065 } else if (s[0] == 'T' && s[1] == '_' && s[2] == 'T' && s[3] == '.')
adam@1467	4066 s += 3;
adamc@874	4067 else
adamc@874	4068 *r++ = s[0];
adamc@874	4069 }
adamc@874	4070
adam@1467	4071 *r = 0;
adam@1467	4072 return ret;
adamc@874	4073 }
adamc@874	4074
adamc@922	4075 uw_Basis_string uw_Basis_mstrcat(uw_context ctx, ...) {
adamc@922	4076 va_list ap;
adamc@922	4077 size_t len = 1;
adamc@922	4078 char s, r, *s2;
phurst@1981	4079
adamc@922	4080 va_start(ap, ctx);
adamc@922	4081 for (s = va_arg(ap, char); s; s = va_arg(ap, char))
adamc@922	4082 len += strlen(s);
adamc@922	4083 va_end(ap);
adamc@922	4084
adamc@922	4085 r = uw_malloc(ctx, len);
adamc@922	4086 va_start(ap, ctx);
adamc@922	4087 for (s2 = r, s = va_arg(ap, char); s; s = va_arg(ap, char))
adamc@922	4088 while (*s)
adamc@922	4089 s2++ = s++;
adamc@922	4090 va_end(ap);
adamc@922	4091 *s2 = 0;
adamc@922	4092
adamc@922	4093 return r;
adamc@922	4094 }
adamc@1006	4095
adam@1365	4096 const uw_Basis_time uw_Basis_minTime = {};
adamc@1050	4097
adamc@1006	4098 uw_Basis_time uw_Basis_now(uw_context ctx) {
adam@1365	4099 uw_Basis_time r = { time(NULL) };
adam@1365	4100 return r;
adamc@1006	4101 }
adamc@1061	4102
adam@1369	4103 uw_Basis_time uw_Basis_addSeconds(uw_context ctx, uw_Basis_time tm, uw_Basis_int n) {
adam@1369	4104 tm.seconds += n;
adam@1365	4105 return tm;
adamc@1138	4106 }
adamc@1138	4107
adam@1514	4108 uw_Basis_int uw_Basis_diffInSeconds(uw_context ctx, uw_Basis_time tm1, uw_Basis_time tm2) {
adam@1514	4109 return difftime(tm2.seconds, tm1.seconds);
adam@1514	4110 }
adam@1514	4111
adam@1685	4112 uw_Basis_int uw_Basis_toMilliseconds(uw_context ctx, uw_Basis_time tm) {
adam@1685	4113 return tm.seconds * 1000 + tm.microseconds / 1000;
adam@1685	4114 }
adam@1685	4115
adam@2187	4116 uw_Basis_time uw_Basis_fromMilliseconds(uw_context ctx, uw_Basis_int n) {
adam@2187	4117 uw_Basis_time tm = {n / 1000, n % 1000 * 1000};
adam@2187	4118 return tm;
adam@2187	4119 }
adam@2187	4120
adam@1685	4121 uw_Basis_int uw_Basis_diffInMilliseconds(uw_context ctx, uw_Basis_time tm1, uw_Basis_time tm2) {
adam@1685	4122 return uw_Basis_toMilliseconds(ctx, tm2) - uw_Basis_toMilliseconds(ctx, tm1);
adam@1685	4123 }
adam@1685	4124
adam@1514	4125 uw_Basis_int uw_Basis_toSeconds(uw_context ctx, uw_Basis_time tm) {
adam@1514	4126 return tm.seconds;
adam@1514	4127 }
adam@1514	4128
phurst@1971	4129 uw_Basis_time uw_Basis_fromDatetime(uw_context ctx, uw_Basis_int year, uw_Basis_int month, uw_Basis_int day, uw_Basis_int hour, uw_Basis_int minute, uw_Basis_int second) {
phurst@1971	4130 struct tm tm = { .tm_year = year - 1900, .tm_mon = month, .tm_mday = day,
adam@2015	4131 .tm_hour = hour, .tm_min = minute, .tm_sec = second,
adam@2015	4132 .tm_isdst = -1 };
phurst@1984	4133 uw_Basis_time r = { timelocal(&tm) };
phurst@1971	4134 return r;
phurst@1971	4135 }
phurst@1971	4136
phurst@1971	4137 uw_Basis_int uw_Basis_datetimeYear(uw_context ctx, uw_Basis_time time) {
phurst@1971	4138 struct tm tm;
phurst@1982	4139 localtime_r(&time.seconds, &tm);
phurst@1971	4140 return tm.tm_year + 1900;
phurst@1971	4141 }
phurst@1971	4142
phurst@1971	4143 uw_Basis_int uw_Basis_datetimeMonth(uw_context ctx, uw_Basis_time time) {
phurst@1971	4144 struct tm tm;
phurst@1982	4145 localtime_r(&time.seconds, &tm);
phurst@1971	4146 return tm.tm_mon;
phurst@1971	4147 }
phurst@1971	4148
phurst@1971	4149 uw_Basis_int uw_Basis_datetimeDay(uw_context ctx, uw_Basis_time time) {
phurst@1971	4150 struct tm tm;
phurst@1982	4151 localtime_r(&time.seconds, &tm);
phurst@1971	4152 return tm.tm_mday;
phurst@1971	4153 }
phurst@1971	4154
phurst@1971	4155 uw_Basis_int uw_Basis_datetimeHour(uw_context ctx, uw_Basis_time time) {
phurst@1971	4156 struct tm tm;
phurst@1982	4157 localtime_r(&time.seconds, &tm);
phurst@1971	4158 return tm.tm_hour;
phurst@1971	4159 }
phurst@1971	4160
phurst@1971	4161 uw_Basis_int uw_Basis_datetimeMinute(uw_context ctx, uw_Basis_time time) {
phurst@1971	4162 struct tm tm;
phurst@1982	4163 localtime_r(&time.seconds, &tm);
phurst@1971	4164 return tm.tm_min;
phurst@1971	4165 }
phurst@1971	4166
phurst@1971	4167 uw_Basis_int uw_Basis_datetimeSecond(uw_context ctx, uw_Basis_time time) {
phurst@1971	4168 struct tm tm;
phurst@1982	4169 localtime_r(&time.seconds, &tm);
phurst@1971	4170 return tm.tm_sec;
phurst@1971	4171 }
phurst@1971	4172
phurst@1973	4173 uw_Basis_int uw_Basis_datetimeDayOfWeek(uw_context ctx, uw_Basis_time time) {
phurst@1973	4174 struct tm tm;
phurst@1982	4175 localtime_r(&time.seconds, &tm);
phurst@1973	4176 return tm.tm_wday;
phurst@1973	4177 }
phurst@1971	4178
phurst@1971	4179
adamc@1061	4180 void uw_get_global(uw_context ctx, char name) {
adamc@1061	4181 int i;
adamc@1061	4182
adamc@1061	4183 for (i = 0; i < ctx->n_globals; ++i)
adamc@1061	4184 if (!strcmp(name, ctx->globals[i].name))
adamc@1061	4185 return ctx->globals[i].data;
adamc@1061	4186
adamc@1061	4187 return NULL;
adamc@1061	4188 }
adamc@1061	4189
adamc@1113	4190 size_t uw_globals_max = SIZE_MAX;
adamc@1113	4191
adamc@1061	4192 void uw_set_global(uw_context ctx, char name, void data, void (free)(void)) {
adamc@1061	4193 int i;
adamc@1061	4194
adamc@1061	4195 for (i = 0; i < ctx->n_globals; ++i)
adamc@1061	4196 if (!strcmp(name, ctx->globals[i].name)) {
adamc@1089	4197 if (ctx->globals[i].free)
adamc@1061	4198 ctx->globals[i].free(ctx->globals[i].data);
adamc@1061	4199 ctx->globals[i].data = data;
adamc@1061	4200 ctx->globals[i].free = free;
adamc@1061	4201 return;
adamc@1061	4202 }
adamc@1089	4203
adamc@1113	4204 if (ctx->n_globals+1 > uw_globals_max)
adamc@1113	4205 uw_error(ctx, FATAL, "Exceeded limit on number of globals");
adamc@1113	4206
adamc@1061	4207 ++ctx->n_globals;
adamc@1061	4208 ctx->globals = realloc(ctx->globals, ctx->n_globals * sizeof(global));
adamc@1061	4209 ctx->globals[ctx->n_globals-1].name = name;
adamc@1061	4210 ctx->globals[ctx->n_globals-1].data = data;
adamc@1061	4211 ctx->globals[ctx->n_globals-1].free = free;
adamc@1061	4212 }
adamc@1061	4213
adamc@1061	4214 uw_Basis_bool uw_Basis_isalnum(uw_context ctx, uw_Basis_char c) {
adamc@1153	4215 return !!isalnum((int)c);
adamc@1061	4216 }
adamc@1061	4217
adamc@1061	4218 uw_Basis_bool uw_Basis_isalpha(uw_context ctx, uw_Basis_char c) {
adamc@1153	4219 return !!isalpha((int)c);
adamc@1061	4220 }
adamc@1061	4221
adamc@1061	4222 uw_Basis_bool uw_Basis_isblank(uw_context ctx, uw_Basis_char c) {
adamc@1153	4223 return !!isblank((int)c);
adamc@1061	4224 }
adamc@1061	4225
adamc@1061	4226 uw_Basis_bool uw_Basis_iscntrl(uw_context ctx, uw_Basis_char c) {
adamc@1153	4227 return !!iscntrl((int)c);
adamc@1061	4228 }
adamc@1061	4229
adamc@1061	4230 uw_Basis_bool uw_Basis_isdigit(uw_context ctx, uw_Basis_char c) {
adamc@1153	4231 return !!isdigit((int)c);
adamc@1061	4232 }
adamc@1061	4233
adamc@1061	4234 uw_Basis_bool uw_Basis_isgraph(uw_context ctx, uw_Basis_char c) {
adamc@1153	4235 return !!isgraph((int)c);
adamc@1061	4236 }
adamc@1061	4237
adamc@1061	4238 uw_Basis_bool uw_Basis_islower(uw_context ctx, uw_Basis_char c) {
adamc@1153	4239 return !!islower((int)c);
adamc@1061	4240 }
adamc@1061	4241
adamc@1061	4242 uw_Basis_bool uw_Basis_isprint(uw_context ctx, uw_Basis_char c) {
adamc@1153	4243 return !!isprint((int)c);
adamc@1061	4244 }
adamc@1061	4245
adamc@1061	4246 uw_Basis_bool uw_Basis_ispunct(uw_context ctx, uw_Basis_char c) {
adamc@1153	4247 return !!ispunct((int)c);
adamc@1061	4248 }
adamc@1061	4249
adamc@1061	4250 uw_Basis_bool uw_Basis_isspace(uw_context ctx, uw_Basis_char c) {
adamc@1153	4251 return !!isspace((int)c);
adamc@1061	4252 }
adamc@1063	4253
adamc@1061	4254 uw_Basis_bool uw_Basis_isupper(uw_context ctx, uw_Basis_char c) {
adamc@1153	4255 return !!isupper((int)c);
adamc@1061	4256 }
adamc@1061	4257
adamc@1061	4258 uw_Basis_bool uw_Basis_isxdigit(uw_context ctx, uw_Basis_char c) {
adamc@1153	4259 return !!isxdigit((int)c);
adamc@1061	4260 }
adamc@1061	4261
adamc@1061	4262 uw_Basis_char uw_Basis_tolower(uw_context ctx, uw_Basis_char c) {
adamc@1153	4263 return tolower((int)c);
adamc@1061	4264 }
adamc@1061	4265
adamc@1061	4266 uw_Basis_char uw_Basis_toupper(uw_context ctx, uw_Basis_char c) {
adamc@1153	4267 return toupper((int)c);
adamc@1061	4268 }
adamc@1066	4269
adamc@1128	4270 uw_Basis_int uw_Basis_ord(uw_context ctx, uw_Basis_char c) {
adamc@1128	4271 return (unsigned char)c;
adamc@1128	4272 }
adamc@1128	4273
adamc@1128	4274 uw_Basis_char uw_Basis_chr(uw_context ctx, uw_Basis_int n) {
adamc@1128	4275 return n;
adamc@1128	4276 }
adamc@1128	4277
adamc@1066	4278 uw_Basis_string uw_Basis_currentUrl(uw_context ctx) {
adamc@1066	4279 return ctx->current_url;
adamc@1066	4280 }
adamc@1066	4281
adamc@1066	4282 void uw_set_currentUrl(uw_context ctx, char *s) {
adamc@1066	4283 ctx->current_url = s;
adamc@1066	4284 }
adamc@1114	4285
adamc@1114	4286 void uw_set_deadline(uw_context ctx, int n) {
adamc@1114	4287 ctx->deadline = n;
adamc@1114	4288 }
adamc@1114	4289
adamc@1114	4290 void uw_check_deadline(uw_context ctx) {
adamc@1114	4291 if (uw_time > ctx->deadline)
adamc@1114	4292 uw_error(ctx, FATAL, "Maximum running time exceeded");
adamc@1114	4293 }
adamc@1115	4294
adamc@1115	4295 size_t uw_database_max = SIZE_MAX;
adamc@1120	4296
adam@1389	4297 uw_Basis_int uw_Basis_naughtyDebug(uw_context ctx, uw_Basis_string s) {
adam@2143	4298 if (ctx->loggers->log_debug)
adam@2143	4299 ctx->loggers->log_debug(ctx->loggers->logger_data, "%s\n", s);
adam@2143	4300 else
adam@2143	4301 fprintf(stderr, "%s\n", s);
adam@1389	4302 return 0;
adam@1389	4303 }
adam@1389	4304
adamc@1120	4305 uw_Basis_unit uw_Basis_debug(uw_context ctx, uw_Basis_string s) {
grrwlf@1997	4306 if (ctx->loggers->log_debug)
grrwlf@1997	4307 ctx->loggers->log_debug(ctx->loggers->logger_data, "%s\n", s);
adam@1334	4308 else
adam@1334	4309 fprintf(stderr, "%s\n", s);
adamc@1120	4310 return uw_unit_v;
adamc@1120	4311 }
adamc@1250	4312
adamc@1250	4313 uw_Basis_int uw_Basis_rand(uw_context ctx) {
adam@2104	4314 int r = my_rand();
adam@2104	4315
adam@2104	4316 if (r >= 0)
adam@2104	4317 return r;
adam@1486	4318 else
adam@1486	4319 uw_error(ctx, FATAL, "Random number generation failed");
adamc@1250	4320 }
adam@1347	4321
adam@1347	4322 void uw_noPostBody(uw_context ctx) {
adam@1347	4323 ctx->hasPostBody = 0;
adam@1347	4324 }
adam@1347	4325
adam@1347	4326 void uw_postBody(uw_context ctx, uw_Basis_postBody pb) {
adam@1347	4327 ctx->hasPostBody = 1;
adam@1347	4328 ctx->postBody = pb;
adam@1347	4329 }
adam@1347	4330
adam@1347	4331 int uw_hasPostBody(uw_context ctx) {
adam@1347	4332 return ctx->hasPostBody;
adam@1347	4333 }
adam@1347	4334
adam@1386	4335 void uw_isPost(uw_context ctx) {
adam@1386	4336 ctx->isPost = 1;
adam@1386	4337 }
adam@1386	4338
adam@1386	4339 uw_Basis_bool uw_Basis_currentUrlHasPost(uw_context ctx) {
adam@1386	4340 return ctx->isPost;
adam@1386	4341 }
adam@1386	4342
adam@1485	4343 uw_Basis_bool uw_Basis_currentUrlHasQueryString(uw_context ctx) {
adam@1485	4344 return ctx->queryString != NULL && ctx->queryString[0] != 0;
adam@1485	4345 }
adam@1485	4346
adam@1370	4347 void uw_setQueryString(uw_context ctx, uw_Basis_string s) {
adam@1370	4348 ctx->queryString = s;
adam@1370	4349 }
adam@1370	4350
adam@1370	4351 uw_Basis_string uw_queryString(uw_context ctx) {
adam@1370	4352 return ctx->queryString;
adam@1370	4353 }
adam@1370	4354
adam@1347	4355 uw_Basis_postBody uw_getPostBody(uw_context ctx) {
adam@1347	4356 if (ctx->hasPostBody)
adam@1347	4357 return ctx->postBody;
adam@1347	4358 else
adam@1347	4359 uw_error(ctx, FATAL, "Asked for POST body when none exists");
adam@1347	4360 }
adam@1349	4361
adam@1349	4362 failure_kind uw_runCallback(uw_context ctx, void (*callback)(uw_context)) {
adam@1349	4363 int r = setjmp(ctx->jmp_buf);
adam@1349	4364
adam@1349	4365 if (r == 0) {
adam@1936	4366 uw_ensure_transaction(ctx);
adam@1418	4367
adam@1349	4368 callback(ctx);
adam@1349	4369 }
adam@1349	4370
adam@1349	4371 return r;
adam@1349	4372 }
adam@1360	4373
adam@1360	4374 uw_Basis_string uw_Basis_crypt(uw_context ctx, uw_Basis_string key, uw_Basis_string salt) {
adam@1397	4375 char buf[14];
adam@1397	4376 return uw_strdup(ctx, DES_fcrypt(key, salt, buf));
adam@1360	4377 }
adam@1365	4378
adam@1365	4379 uw_Basis_bool uw_Basis_eq_time(uw_context ctx, uw_Basis_time t1, uw_Basis_time t2) {
adam@1365	4380 return !!(t1.seconds == t2.seconds && t1.microseconds == t2.microseconds);
adam@1365	4381 }
adam@1365	4382
adam@1365	4383 uw_Basis_bool uw_Basis_lt_time(uw_context ctx, uw_Basis_time t1, uw_Basis_time t2) {
adam@2034	4384 return !!(t1.seconds < t2.seconds \|\| (t1.seconds == t2.seconds && t1.microseconds < t2.microseconds));
adam@1365	4385 }
adam@1365	4386
adam@1365	4387 uw_Basis_bool uw_Basis_le_time(uw_context ctx, uw_Basis_time t1, uw_Basis_time t2) {
adam@1365	4388 return !!(uw_Basis_eq_time(ctx, t1, t2) \|\| uw_Basis_lt_time(ctx, t1, t2));
adam@1365	4389 }
adam@1365	4390
adam@1372	4391 uw_Basis_time *uw_Basis_readUtc(uw_context ctx, uw_Basis_string s) {
adam@1374	4392 struct tm stm = {};
adam@1375	4393 char *end = strchr(s, 0);
adam@1449	4394 stm.tm_isdst = -1;
adam@1375	4395
adam@1632	4396 if (strptime(s, TIME_FMT_PG, &stm) == end \|\| strptime(s, TIME_FMT, &stm) == end \|\| strptime(s, TIME_FMT_JS, &stm) == end) {
adam@1373	4397 uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
adam@1375	4398
kkallio@1448	4399 r->seconds = timegm(&stm);
adam@1373	4400 r->microseconds = 0;
adam@1373	4401
adam@1373	4402 return r;
adam@1374	4403 }
adam@1374	4404 else
adam@1373	4405 return NULL;
adam@1372	4406 }
adam@1407	4407
adam@1407	4408 failure_kind uw_begin_onError(uw_context ctx, char *msg) {
adam@1407	4409 int r = setjmp(ctx->jmp_buf);
adam@1407	4410
adam@1407	4411 if (ctx->app->on_error) {
adam@1407	4412 if (r == 0) {
adam@1936	4413 uw_ensure_transaction(ctx);
adam@1407	4414
adam@1409	4415 uw_buffer_reset(&ctx->outHeaders);
adam@1409	4416 if (on_success[0])
adam@1409	4417 uw_write_header(ctx, "HTTP/1.1 ");
adam@1409	4418 else
adam@1409	4419 uw_write_header(ctx, "Status: ");
adam@1409	4420 uw_write_header(ctx, "500 Internal Server Error\r\n");
adam@1919	4421 uw_write_header(ctx, "Content-type: text/html\r\n");
adam@1956	4422 uw_write(ctx, ctx->app->is_html5 ? uw_begin_html5 : uw_begin_xhtml);
adam@1407	4423 ctx->app->on_error(ctx, msg);
adam@1407	4424 uw_write(ctx, "</html>");
adam@1407	4425 }
adam@1407	4426
adam@1407	4427 return r;
adam@1407	4428 } else
adam@1407	4429 uw_error(ctx, FATAL, "Tried to run nonexistent onError handler");
adam@1407	4430 }
adam@1451	4431
adam@1451	4432 void uw_mayReturnIndirectly(uw_context ctx) {
adam@1451	4433 ctx->allowed_to_return_indirectly = 1;
adam@1451	4434 }
adam@1483	4435
adam@1556	4436 uw_Basis_string uw_Basis_fresh(uw_context ctx) {
adam@1703	4437 int len;
adam@1703	4438 char *r;
adam@1703	4439
adam@1703	4440 uw_check_heap(ctx, 2+INTS_MAX);
adam@1703	4441 r = ctx->heap.front;
adam@1703	4442 sprintf(r, "uw%u%n", ctx->nextId++, &len);
adam@1703	4443 ctx->heap.front += len+1;
adam@1703	4444 return r;
adam@1556	4445 }
adam@1571	4446
adam@1571	4447 uw_Basis_float uw_Basis_floatFromInt(uw_context ctx, uw_Basis_int n) {
adam@1571	4448 return n;
adam@1571	4449 }
adam@1571	4450
adam@1571	4451 uw_Basis_int uw_Basis_ceil(uw_context ctx, uw_Basis_float n) {
adam@1571	4452 return ceil(n);
adam@1571	4453 }
adam@1571	4454
adam@1571	4455 uw_Basis_int uw_Basis_trunc(uw_context ctx, uw_Basis_float n) {
adam@1571	4456 return trunc(n);
adam@1571	4457 }
adam@1571	4458
adam@1571	4459 uw_Basis_int uw_Basis_round(uw_context ctx, uw_Basis_float n) {
adam@1571	4460 return round(n);
adam@1571	4461 }
adam@1755	4462
adam@1755	4463 uw_Basis_string uw_Basis_atom(uw_context ctx, uw_Basis_string s) {
adam@1755	4464 char *p;
adam@1755	4465
adam@1755	4466 for (p = s; *p; ++p) {
adam@1755	4467 char c = *p;
adam@1801	4468 if (!isalnum((int)c) && c != '+' && c != '-' && c != '.' && c != '%' && c != '#')
adam@1755	4469 uw_error(ctx, FATAL, "Disallowed character in CSS atom");
adam@1755	4470 }
adam@1755	4471
adam@1755	4472 return s;
adam@1755	4473 }
adam@1755	4474
adam@1755	4475 uw_Basis_string uw_Basis_css_url(uw_context ctx, uw_Basis_string s) {
adam@1755	4476 char *p;
adam@1755	4477
adam@1755	4478 for (p = s; *p; ++p) {
adam@1755	4479 char c = *p;
adam@1801	4480 if (!isalnum((int)c) && c != ':' && c != '/' && c != '.' && c != '_' && c != '+'
adam@1755	4481 && c != '-' && c != '%' && c != '?' && c != '&' && c != '=' && c != '#')
adam@1755	4482 uw_error(ctx, FATAL, "Disallowed character in CSS URL");
adam@1755	4483 }
adam@1755	4484
adam@1755	4485 return s;
adam@1755	4486 }
adam@1755	4487
adam@1755	4488 uw_Basis_string uw_Basis_property(uw_context ctx, uw_Basis_string s) {
adam@1755	4489 char *p;
adam@1755	4490
adam@1755	4491 if (!*s)
adam@1755	4492 uw_error(ctx, FATAL, "Empty CSS property");
adam@1755	4493
adam@1801	4494 if (!islower((int)s[0]) && s[0] != '_')
adam@1755	4495 uw_error(ctx, FATAL, "Bad initial character in CSS property");
adam@1755	4496
adam@1755	4497 for (p = s; *p; ++p) {
adam@1755	4498 char c = *p;
adam@1801	4499 if (!islower((int)c) && !isdigit((int)c) && c != '_' && c != '-')
adam@1755	4500 uw_error(ctx, FATAL, "Disallowed character in CSS property");
adam@1755	4501 }
adam@1755	4502
adam@1755	4503 return s;
adam@1755	4504 }
adam@1787	4505
adam@1787	4506 uw_Basis_string uw_Basis_fieldName(uw_context ctx, uw_Basis_postField f) {
adam@1787	4507 return f.name;
adam@1787	4508 }
adam@1787	4509
adam@1787	4510 uw_Basis_string uw_Basis_fieldValue(uw_context ctx, uw_Basis_postField f) {
adam@1787	4511 return f.value;
adam@1787	4512 }
adam@1787	4513
adam@1787	4514 uw_Basis_string uw_Basis_remainingFields(uw_context ctx, uw_Basis_postField f) {
adam@1787	4515 return f.remaining;
adam@1787	4516 }
adam@1787	4517
adam@1787	4518 uw_Basis_postField *uw_Basis_firstFormField(uw_context ctx, uw_Basis_string s) {
adam@1788	4519 char *unurl;
adam@1787	4520 uw_Basis_postField *f;
adam@1787	4521
adam@1788	4522 if (!ctx->hasPostBody)
adam@1788	4523 uw_error(ctx, FATAL, "firstFormField called when there is no POST body");
adam@1788	4524
adam@1788	4525 if (s < ctx->postBody.data \|\| s >= ctx->postBody.data + ctx->postBody.len)
adam@1787	4526 return NULL;
adam@1787	4527
adam@1787	4528 f = uw_malloc(ctx, sizeof(uw_Basis_postField));
adam@1788	4529 unurl = s;
adam@1787	4530 f->name = uw_Basis_unurlifyString(ctx, &unurl);
adam@1788	4531 s = strchr(s, 0);
adam@1788	4532 if (!s)
adam@1788	4533 uw_error(ctx, FATAL, "firstFormField: Missing null terminator");
adam@1788	4534 ++s;
adam@1788	4535 unurl = s;
adam@1788	4536 f->value = uw_Basis_unurlifyString(ctx, &unurl);
adam@1788	4537 s = strchr(s, 0);
adam@1788	4538 if (!s)
adam@1788	4539 uw_error(ctx, FATAL, "firstFormField: Missing null terminator");
adam@1788	4540 f->remaining = s+1;
adam@1787	4541
adam@1787	4542 return f;
adam@1787	4543 }
adam@2008	4544
adam@2008	4545 uw_Basis_string uw_Basis_blessData(uw_context ctx, uw_Basis_string s) {
adam@2008	4546 char *p = s;
adam@2008	4547
adam@2008	4548 for (; *p; ++p)
adam@2008	4549 if (!isalnum(p) && p != '-' && *p != '_')
adam@2008	4550 uw_error(ctx, FATAL, "Illegal HTML5 data-* attribute: %s", s);
adam@2008	4551
adam@2008	4552 return s;
adam@2008	4553 }
adam@2073	4554
adam@2073	4555 int uw_remoteSock(uw_context ctx) {
adam@2073	4556 return ctx->remoteSock;
adam@2073	4557 }
adam@2073	4558
adam@2073	4559 void uw_set_remoteSock(uw_context ctx, int sock) {
adam@2073	4560 ctx->remoteSock = sock;
adam@2073	4561 }
ziv@2234	4562
ziv@2234	4563
ziv@2234	4564 // Sqlcache
ziv@2234	4565
ziv@2284	4566 typedef struct uw_Sqlcache_Entry {
ziv@2284	4567 char *key;
ziv@2284	4568 uw_Sqlcache_Value *value;
ziv@2284	4569 unsigned long timeInvalid;
ziv@2284	4570 UT_hash_handle hh;
ziv@2284	4571 } uw_Sqlcache_Entry;
ziv@2284	4572
ziv@2288	4573 static void uw_Sqlcache_freeValue(uw_Sqlcache_Value *value) {
ziv@2234	4574 if (value) {
ziv@2234	4575 free(value->result);
ziv@2234	4576 free(value->output);
ziv@2234	4577 free(value);
ziv@2234	4578 }
ziv@2234	4579 }
ziv@2234	4580
ziv@2288	4581 static void uw_Sqlcache_freeEntry(uw_Sqlcache_Entry* entry) {
ziv@2279	4582 if (entry) {
ziv@2279	4583 free(entry->key);
ziv@2279	4584 uw_Sqlcache_freeValue(entry->value);
ziv@2279	4585 free(entry);
ziv@2279	4586 }
ziv@2279	4587 }
ziv@2279	4588
ziv@2279	4589 // TODO: pick a number.
ziv@2288	4590 static unsigned int uw_Sqlcache_maxSize = 1234567890;
ziv@2288	4591
ziv@2288	4592 static void uw_Sqlcache_delete(uw_Sqlcache_Cache cache, uw_Sqlcache_Entry entry) {
ziv@2291	4593 if (entry) {
ziv@2291	4594 HASH_DEL(cache->table, entry);
ziv@2291	4595 uw_Sqlcache_freeEntry(entry);
ziv@2291	4596 }
ziv@2279	4597 }
ziv@2279	4598
ziv@2288	4599 static uw_Sqlcache_Entry uw_Sqlcache_find(uw_Sqlcache_Cache cache, char *key, size_t len, int bump) {
ziv@2279	4600 uw_Sqlcache_Entry *entry = NULL;
ziv@2279	4601 HASH_FIND(hh, cache->table, key, len, entry);
ziv@2279	4602 if (entry && bump) {
ziv@2279	4603 // Bump for LRU purposes.
ziv@2279	4604 HASH_DEL(cache->table, entry);
ziv@2279	4605 // Important that we use [entry->key], because [key] might be ephemeral.
ziv@2279	4606 HASH_ADD_KEYPTR(hh, cache->table, entry->key, len, entry);
ziv@2279	4607 }
ziv@2279	4608 return entry;
ziv@2279	4609 }
ziv@2279	4610
ziv@2288	4611 static void uw_Sqlcache_add(uw_Sqlcache_Cache cache, uw_Sqlcache_Entry entry, size_t len) {
ziv@2279	4612 HASH_ADD_KEYPTR(hh, cache->table, entry->key, len, entry);
ziv@2279	4613 if (HASH_COUNT(cache->table) > uw_Sqlcache_maxSize) {
ziv@2279	4614 // Deletes the first element of the cache.
ziv@2279	4615 uw_Sqlcache_delete(cache, cache->table);
ziv@2279	4616 }
ziv@2279	4617 }
ziv@2279	4618
ziv@2288	4619 static unsigned long uw_Sqlcache_getTimeNow(uw_Sqlcache_Cache *cache) {
ziv@2302	4620 // TODO: verify that this makes time comparisons do the Right Thing.
ziv@2302	4621 return cache->timeNow++;
ziv@2279	4622 }
ziv@2279	4623
ziv@2288	4624 static unsigned long uw_Sqlcache_timeMax(unsigned long x, unsigned long y) {
ziv@2279	4625 return x > y ? x : y;
ziv@2279	4626 }
ziv@2279	4627
ziv@2288	4628 static char uw_Sqlcache_keySep = '_';
ziv@2288	4629
ziv@2288	4630 static char uw_Sqlcache_allocKeyBuffer(char *keys, size_t numKeys) {
ziv@2279	4631 size_t len = 0;
ziv@2279	4632 while (numKeys-- > 0) {
ziv@2279	4633 char* k = keys[numKeys];
ziv@2279	4634 if (!k) {
adam@2296	4635 // Can only happen when flushing, in which case we don't need anything past the null key.
ziv@2279	4636 break;
ziv@2234	4637 }
ziv@2279	4638 // Leave room for separator.
ziv@2279	4639 len += 1 + strlen(k);
ziv@2234	4640 }
ziv@2279	4641 char *buf = malloc(len+1);
ziv@2279	4642 // If nothing is copied into the buffer, it should look like it has length 0.
ziv@2279	4643 buf[0] = 0;
ziv@2279	4644 return buf;
ziv@2279	4645 }
ziv@2279	4646
ziv@2288	4647 static char uw_Sqlcache_keyCopy(char buf, char *key) {
ziv@2279	4648 *buf++ = uw_Sqlcache_keySep;
ziv@2279	4649 return stpcpy(buf, key);
ziv@2279	4650 }
ziv@2279	4651
ziv@2279	4652 // The NUL-terminated prefix of [key] below always looks something like "_k1_k2_k3..._kn".
ziv@2285	4653
ziv@2285	4654 uw_Sqlcache_Value uw_Sqlcache_check(uw_context ctx, uw_Sqlcache_Cache cache, char **keys) {
ziv@2288	4655 int doBump = random() % 1024 == 0;
ziv@2288	4656 if (doBump) {
ziv@2288	4657 pthread_rwlock_wrlock(&cache->lockIn);
ziv@2288	4658 } else {
ziv@2288	4659 pthread_rwlock_rdlock(&cache->lockIn);
ziv@2288	4660 }
ziv@2281	4661 size_t numKeys = cache->numKeys;
ziv@2279	4662 char *key = uw_Sqlcache_allocKeyBuffer(keys, numKeys);
ziv@2279	4663 char *buf = key;
ziv@2279	4664 time_t timeInvalid = cache->timeInvalid;
ziv@2279	4665 uw_Sqlcache_Entry *entry;
ziv@2286	4666 if (numKeys == 0) {
ziv@2286	4667 entry = cache->table;
ziv@2279	4668 if (!entry) {
ziv@2279	4669 free(key);
ziv@2288	4670 pthread_rwlock_unlock(&cache->lockIn);
ziv@2279	4671 return NULL;
ziv@2279	4672 }
ziv@2286	4673 } else {
ziv@2286	4674 while (numKeys-- > 0) {
ziv@2286	4675 buf = uw_Sqlcache_keyCopy(buf, keys[numKeys]);
ziv@2286	4676 size_t len = buf - key;
ziv@2288	4677 entry = uw_Sqlcache_find(cache, key, len, doBump);
ziv@2286	4678 if (!entry) {
ziv@2286	4679 free(key);
ziv@2288	4680 pthread_rwlock_unlock(&cache->lockIn);
ziv@2286	4681 return NULL;
ziv@2286	4682 }
ziv@2286	4683 timeInvalid = uw_Sqlcache_timeMax(timeInvalid, entry->timeInvalid);
ziv@2286	4684 }
ziv@2286	4685 free(key);
ziv@2234	4686 }
ziv@2279	4687 uw_Sqlcache_Value *value = entry->value;
ziv@2288	4688 pthread_rwlock_unlock(&cache->lockIn);
ziv@2288	4689 // ASK: though the argument isn't trivial, this is safe, right?
ziv@2288	4690 // Returning outside the lock is safe because updates happen at commit time.
ziv@2288	4691 // Those are the only times the returned value or its strings can get freed.
ziv@2288	4692 // Handler output is a new string, so it's safe to free this at commit time.
ziv@2302	4693 return value && timeInvalid < value->timeValid ? value : NULL;
ziv@2279	4694 }
ziv@2279	4695
ziv@2288	4696 static void uw_Sqlcache_storeCommitOne(uw_Sqlcache_Cache cache, char keys, uw_Sqlcache_Value value) {
ziv@2288	4697 pthread_rwlock_wrlock(&cache->lockIn);
ziv@2281	4698 size_t numKeys = cache->numKeys;
ziv@2279	4699 time_t timeNow = uw_Sqlcache_getTimeNow(cache);
ziv@2279	4700 uw_Sqlcache_Entry *entry;
ziv@2286	4701 if (numKeys == 0) {
ziv@2286	4702 entry = cache->table;
ziv@2279	4703 if (!entry) {
adam@2296	4704 entry = calloc(1, sizeof(uw_Sqlcache_Entry));
ziv@2288	4705 entry->key = NULL;
ziv@2279	4706 entry->value = NULL;
ziv@2285	4707 entry->timeInvalid = 0;
ziv@2286	4708 cache->table = entry;
ziv@2234	4709 }
ziv@2286	4710 } else {
ziv@2288	4711 char *key = uw_Sqlcache_allocKeyBuffer(keys, numKeys);
ziv@2288	4712 char *buf = key;
ziv@2286	4713 while (numKeys-- > 0) {
ziv@2286	4714 buf = uw_Sqlcache_keyCopy(buf, keys[numKeys]);
ziv@2286	4715 size_t len = buf - key;
ziv@2302	4716
ziv@2286	4717 entry = uw_Sqlcache_find(cache, key, len, 1);
ziv@2286	4718 if (!entry) {
adam@2296	4719 entry = calloc(1, sizeof(uw_Sqlcache_Entry));
ziv@2286	4720 entry->key = strdup(key);
ziv@2286	4721 entry->value = NULL;
ziv@2286	4722 entry->timeInvalid = 0;
ziv@2286	4723 uw_Sqlcache_add(cache, entry, len);
ziv@2286	4724 }
ziv@2286	4725 }
ziv@2286	4726 free(key);
ziv@2234	4727 }
adam@2298	4728 if (!entry->value \|\| entry->value->timeValid < value->timeValid) {
adam@2297	4729 uw_Sqlcache_freeValue(entry->value);
adam@2297	4730 entry->value = value;
adam@2297	4731 entry->value->timeValid = timeNow;
adam@2297	4732 }
ziv@2288	4733 pthread_rwlock_unlock(&cache->lockIn);
ziv@2288	4734 }
ziv@2288	4735
ziv@2288	4736 static void uw_Sqlcache_flushCommitOne(uw_Sqlcache_Cache cache, char *keys) {
ziv@2288	4737 }
ziv@2288	4738
ziv@2288	4739 static void uw_Sqlcache_commit(void *data) {
ziv@2288	4740 uw_context ctx = (uw_context)data;
ziv@2288	4741 uw_Sqlcache_Update *update = ctx->cacheUpdate;
ziv@2288	4742 while (update) {
ziv@2288	4743 uw_Sqlcache_Cache *cache = update->cache;
ziv@2288	4744 char **keys = update->keys;
ziv@2288	4745 if (update->value) {
ziv@2288	4746 uw_Sqlcache_storeCommitOne(cache, keys, update->value);
ziv@2288	4747 } else {
ziv@2288	4748 uw_Sqlcache_flushCommitOne(cache, keys);
ziv@2288	4749 }
ziv@2288	4750 update = update->next;
ziv@2288	4751 }
ziv@2288	4752 }
ziv@2288	4753
ziv@2288	4754 static void uw_Sqlcache_free(void *data, int dontCare) {
ziv@2285	4755 uw_context ctx = (uw_context)data;
ziv@2285	4756 uw_Sqlcache_Update *update = ctx->cacheUpdate;
ziv@2285	4757 while (update) {
ziv@2285	4758 char** keys = update->keys;
ziv@2285	4759 size_t numKeys = update->cache->numKeys;
ziv@2282	4760 while (numKeys-- > 0) {
ziv@2282	4761 free(keys[numKeys]);
ziv@2282	4762 }
ziv@2282	4763 free(keys);
ziv@2285	4764 // Don't free [update->value]: it's in the cache now!
ziv@2285	4765 uw_Sqlcache_Update *nextUpdate = update->next;
ziv@2285	4766 free(update);
ziv@2285	4767 update = nextUpdate;
ziv@2282	4768 }
ziv@2285	4769 ctx->cacheUpdate = NULL;
ziv@2285	4770 ctx->cacheUpdateTail = NULL;
ziv@2288	4771 uw_Sqlcache_Unlock *unlock = ctx->cacheUnlock;
ziv@2288	4772 while (unlock) {
ziv@2288	4773 pthread_rwlock_unlock(unlock->lock);
ziv@2288	4774 uw_Sqlcache_Unlock *nextUnlock = unlock->next;
ziv@2288	4775 free(unlock);
ziv@2288	4776 unlock = nextUnlock;
ziv@2282	4777 }
ziv@2288	4778 ctx->cacheUnlock = NULL;
ziv@2288	4779 }
ziv@2288	4780
ziv@2288	4781 static void uw_Sqlcache_pushUnlock(uw_context ctx, pthread_rwlock_t *lock) {
ziv@2288	4782 if (!ctx->cacheUnlock) {
ziv@2288	4783 // Just need one registered commit for both updating and unlocking.
ziv@2288	4784 uw_register_transactional(ctx, ctx, uw_Sqlcache_commit, NULL, uw_Sqlcache_free);
ziv@2288	4785 }
ziv@2288	4786 uw_Sqlcache_Unlock *unlock = malloc(sizeof(uw_Sqlcache_Unlock));
ziv@2288	4787 unlock->lock = lock;
ziv@2288	4788 unlock->next = ctx->cacheUnlock;
ziv@2288	4789 ctx->cacheUnlock = unlock;
ziv@2288	4790 }
ziv@2288	4791
ziv@2288	4792 void uw_Sqlcache_rlock(uw_context ctx, uw_Sqlcache_Cache *cache) {
ziv@2288	4793 pthread_rwlock_rdlock(&cache->lockOut);
ziv@2288	4794 uw_Sqlcache_pushUnlock(ctx, &cache->lockOut);
ziv@2288	4795 }
ziv@2288	4796
ziv@2288	4797 void uw_Sqlcache_wlock(uw_context ctx, uw_Sqlcache_Cache *cache) {
ziv@2288	4798 pthread_rwlock_wrlock(&cache->lockOut);
ziv@2288	4799 uw_Sqlcache_pushUnlock(ctx, &cache->lockOut);
ziv@2288	4800 }
ziv@2288	4801
ziv@2288	4802 static char uw_Sqlcache_copyKeys(char keys, size_t numKeys) {
ziv@2284	4803 char *copy = malloc(sizeof(char ) * numKeys);
ziv@2284	4804 while (numKeys-- > 0) {
ziv@2285	4805 char *k = keys[numKeys];
ziv@2284	4806 copy[numKeys] = k ? strdup(k) : NULL;
ziv@2284	4807 }
ziv@2284	4808 return copy;
ziv@2282	4809 }
ziv@2282	4810
ziv@2285	4811 void uw_Sqlcache_store(uw_context ctx, uw_Sqlcache_Cache cache, char keys, uw_Sqlcache_Value value) {
ziv@2285	4812 uw_Sqlcache_Update *update = malloc(sizeof(uw_Sqlcache_Update));
ziv@2285	4813 update->cache = cache;
ziv@2285	4814 update->keys = uw_Sqlcache_copyKeys(keys, cache->numKeys);
ziv@2285	4815 update->value = value;
ziv@2285	4816 update->next = NULL;
ziv@2302	4817 // Can't use [uw_Sqlcache_getTimeNow] because it modifies state and we don't have the lock.
ziv@2303	4818 pthread_rwlock_rdlock(&cache->lockIn);
ziv@2302	4819 value->timeValid = cache->timeNow;
ziv@2303	4820 pthread_rwlock_unlock(&cache->lockIn);
ziv@2285	4821 if (ctx->cacheUpdateTail) {
ziv@2285	4822 ctx->cacheUpdateTail->next = update;
ziv@2285	4823 } else {
ziv@2285	4824 ctx->cacheUpdate = update;
ziv@2285	4825 }
ziv@2285	4826 ctx->cacheUpdateTail = update;
ziv@2285	4827 }
ziv@2285	4828
ziv@2282	4829 void uw_Sqlcache_flush(uw_context ctx, uw_Sqlcache_Cache cache, char *keys) {
ziv@2291	4830 // A flush has to happen immediately so that subsequent stores in the same transaction fail.
ziv@2291	4831 // This is safe to do because we will always call [uw_Sqlcache_wlock] earlier.
ziv@2291	4832 // If the transaction fails, the only harm done is a few extra cache misses.
ziv@2291	4833 pthread_rwlock_wrlock(&cache->lockIn);
ziv@2291	4834 size_t numKeys = cache->numKeys;
ziv@2291	4835 if (numKeys == 0) {
ziv@2291	4836 uw_Sqlcache_Entry *entry = cache->table;
ziv@2291	4837 if (entry) {
ziv@2291	4838 uw_Sqlcache_freeValue(entry->value);
ziv@2291	4839 entry->value = NULL;
ziv@2291	4840 }
ziv@2291	4841 } else {
ziv@2291	4842 char *key = uw_Sqlcache_allocKeyBuffer(keys, numKeys);
ziv@2291	4843 char *buf = key;
ziv@2291	4844 time_t timeNow = uw_Sqlcache_getTimeNow(cache);
ziv@2291	4845 while (numKeys-- > 0) {
ziv@2291	4846 char *k = keys[numKeys];
ziv@2291	4847 if (!k) {
ziv@2291	4848 size_t len = buf - key;
ziv@2291	4849 if (len == 0) {
ziv@2291	4850 // The first key was null.
ziv@2291	4851 cache->timeInvalid = timeNow;
ziv@2291	4852 } else {
ziv@2291	4853 uw_Sqlcache_Entry *entry = uw_Sqlcache_find(cache, key, len, 0);
ziv@2291	4854 if (entry) {
ziv@2291	4855 entry->timeInvalid = timeNow;
ziv@2291	4856 }
ziv@2291	4857 }
ziv@2291	4858 free(key);
ziv@2291	4859 pthread_rwlock_unlock(&cache->lockIn);
ziv@2291	4860 return;
ziv@2291	4861 }
ziv@2291	4862 buf = uw_Sqlcache_keyCopy(buf, k);
ziv@2291	4863 }
ziv@2291	4864 // All the keys were non-null, so we delete the pointed-to entry.
ziv@2291	4865 size_t len = buf - key;
ziv@2291	4866 uw_Sqlcache_Entry *entry = uw_Sqlcache_find(cache, key, len, 0);
ziv@2291	4867 free(key);
ziv@2291	4868 uw_Sqlcache_delete(cache, entry);
ziv@2291	4869 }
ziv@2291	4870 pthread_rwlock_unlock(&cache->lockIn);
ziv@2291	4871 }

Mercurial > urweb

annotate src/c/urweb.c @ 2303:42079884e34a