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

annotate src/c/urweb.c @ 2307:6ae9a2784a45

Return to working version mode

author	Adam Chlipala <adam@chlipala.net>
date	Sun, 20 Dec 2015 14:39:50 -0500
parents	6fb9232ade99
children

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

Mercurial > urweb

annotate src/c/urweb.c @ 2307:6ae9a2784a45