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

annotate src/c/urweb.c @ 1340:caff0a4d5fc1

Allow use of path variables in strings with no slashes

author	Adam Chlipala <adam@chlipala.net>
date	Tue, 14 Dec 2010 10:59:17 -0500
parents	a1aa62b472cf
children	b106ca8200b1

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>
adamc@102	16
adamc@667	17 #include <pthread.h>
adamc@667	18
adamc@102	19 #include "types.h"
adamc@102	20
adamc@311	21 uw_unit uw_unit_v = {};
adamc@102	22
adamc@667	23
adamc@667	24 // Socket extras
adamc@667	25
adamc@863	26 int uw_really_send(int sock, const void *buf, ssize_t len) {
adamc@667	27 while (len > 0) {
adamc@856	28 ssize_t n = send(sock, buf, len, 0);
adamc@856	29
adamc@856	30 if (n < 0)
adamc@856	31 return n;
adamc@856	32
adamc@856	33 buf += n;
adamc@856	34 len -= n;
adamc@856	35 }
adamc@856	36
adamc@856	37 return 0;
adamc@856	38 }
adamc@856	39
adamc@856	40 int uw_really_write(int fd, const void *buf, size_t len) {
adamc@856	41 while (len > 0) {
adamc@856	42 ssize_t n = write(fd, buf, len);
adamc@667	43
adamc@667	44 if (n < 0)
adamc@667	45 return n;
adamc@667	46
adamc@667	47 buf += n;
adamc@667	48 len -= n;
adamc@667	49 }
adamc@667	50
adamc@667	51 return 0;
adamc@667	52 }
adamc@667	53
adamc@667	54
adamc@667	55 // Buffers
adamc@667	56
adamc@667	57 typedef struct {
adamc@1113	58 size_t max;
adamc@667	59 char start, front, *back;
adamc@667	60 } buf;
adamc@667	61
adamc@1113	62 static void buf_init(size_t max, buf *b, size_t s) {
adamc@1113	63 b->max = max;
adamc@667	64 b->front = b->start = malloc(s);
adamc@667	65 b->back = b->front + s;
adamc@667	66 }
adamc@667	67
adamc@667	68 static void buf_free(buf *b) {
adamc@667	69 free(b->start);
adamc@667	70 }
adamc@667	71
adamc@667	72 static void buf_reset(buf *b) {
adamc@667	73 b->front = b->start;
adamc@667	74 }
adamc@667	75
adamc@1113	76 static int buf_check(buf *b, size_t extra) {
adamc@667	77 if (b->back - b->front < extra) {
adamc@667	78 size_t desired = b->front - b->start + extra, next;
adamc@667	79 char *new_heap;
adamc@667	80
adamc@667	81 next = b->back - b->start;
adamc@667	82 if (next == 0)
adamc@667	83 next = 1;
adamc@667	84 for (; next < desired; next *= 2);
adamc@667	85
adamc@1134	86 if (next > b->max) {
adamc@1113	87 if (desired <= b->max)
adamc@1113	88 next = desired;
adamc@1113	89 else
adamc@1113	90 return 1;
adamc@1134	91 }
adamc@1113	92
adamc@667	93 new_heap = realloc(b->start, next);
adamc@667	94 b->front = new_heap + (b->front - b->start);
adamc@667	95 b->back = new_heap + next;
adamc@667	96 b->start = new_heap;
adamc@667	97 }
adamc@1113	98
adamc@1113	99 return 0;
adamc@1113	100 }
adamc@1113	101
adamc@1113	102 __attribute__((noreturn)) void uw_error(uw_context, failure_kind, const char *, ...);
adamc@1113	103
adamc@1113	104 static void ctx_buf_check(uw_context ctx, const char kind, buf b, size_t extra) {
adamc@1113	105 if (buf_check(b, extra))
adamc@1113	106 uw_error(ctx, FATAL, "Memory limit exceeded (%s)", kind);
adamc@667	107 }
adamc@667	108
adamc@667	109 static size_t buf_used(buf *b) {
adamc@667	110 return b->front - b->start;
adamc@667	111 }
adamc@667	112
adamc@667	113 static size_t buf_avail(buf *b) {
adamc@667	114 return b->back - b->start;
adamc@667	115 }
adamc@667	116
adamc@1113	117 static int buf_append(buf b, const char s, size_t len) {
adamc@1113	118 if (buf_check(b, len+1))
adamc@1113	119 return 1;
adamc@1113	120
adamc@1113	121 memcpy(b->front, s, len);
adamc@1113	122 b->front += len;
adamc@1113	123 *b->front = 0;
adamc@1113	124
adamc@1113	125 return 0;
adamc@1113	126 }
adamc@1113	127
adamc@1113	128 static void ctx_buf_append(uw_context ctx, const char kind, buf b, const char *s, size_t len) {
adamc@1113	129 ctx_buf_check(ctx, kind, b, len+1);
adamc@1113	130
adamc@668	131 memcpy(b->front, s, len);
adamc@668	132 b->front += len;
adamc@672	133 *b->front = 0;
adamc@668	134 }
adamc@667	135
adamc@668	136
adamc@672	137 // Persistent state types
adamc@667	138
adamc@667	139 typedef enum { UNUSED, USED } usage;
adamc@667	140
adamc@667	141 typedef struct client {
adamc@682	142 unsigned id;
adamc@667	143 usage mode;
adamc@682	144 int pass;
adamc@682	145 struct client *next;
adamc@689	146 pthread_mutex_t lock, pull_lock;
adamc@682	147 buf msgs;
adamc@682	148 int sock;
adamc@863	149 int (send)(int sockfd, const void buf, ssize_t len);
adamc@863	150 int (*close)(int fd);
adamc@682	151 time_t last_contact;
adamc@682	152 unsigned n_channels;
adamc@685	153 unsigned refcount;
adamc@1121	154 void *data;
adamc@667	155 } client;
adamc@667	156
adamc@672	157
adamc@672	158 // Persistent client state
adamc@672	159
adamc@682	160 static client *clients, clients_free, *clients_used;
adamc@682	161 static unsigned n_clients;
adamc@667	162
adamc@667	163 static pthread_mutex_t clients_mutex = PTHREAD_MUTEX_INITIALIZER;
adamc@667	164
adamc@1113	165 size_t uw_messages_max = SIZE_MAX;
adamc@1113	166 size_t uw_clients_max = SIZE_MAX;
adamc@1113	167
adamc@1121	168 void *uw_init_client_data();
adamc@1121	169 void uw_free_client_data(void *);
adamc@1121	170 void uw_copy_client_data(void dst, void src);
adamc@1121	171
adamc@682	172 static client *new_client() {
adamc@667	173 client *c;
adamc@667	174
adamc@667	175 pthread_mutex_lock(&clients_mutex);
adamc@667	176
adamc@667	177 if (clients_free) {
adamc@667	178 c = clients_free;
adamc@682	179 clients_free = clients_free->next;
adamc@667	180 }
adamc@1113	181 else if (n_clients >= uw_clients_max)
adamc@1113	182 return NULL;
adamc@667	183 else {
adamc@667	184 ++n_clients;
adamc@667	185 clients = realloc(clients, sizeof(client) * n_clients);
adamc@667	186 c = malloc(sizeof(client));
adamc@667	187 c->id = n_clients-1;
adamc@682	188 pthread_mutex_init(&c->lock, NULL);
adamc@689	189 pthread_mutex_init(&c->pull_lock, NULL);
adamc@1113	190 buf_init(uw_messages_max, &c->msgs, 0);
adamc@667	191 clients[n_clients-1] = c;
adamc@667	192 }
adamc@667	193
adamc@682	194 pthread_mutex_lock(&c->lock);
adamc@667	195 c->mode = USED;
adamc@682	196 c->pass = rand();
adamc@682	197 c->sock = -1;
adamc@682	198 c->last_contact = time(NULL);
adamc@682	199 buf_reset(&c->msgs);
adamc@682	200 c->n_channels = 0;
adamc@685	201 c->refcount = 0;
adamc@1121	202 c->data = uw_init_client_data();
adamc@682	203 pthread_mutex_unlock(&c->lock);
adamc@682	204
adamc@682	205 c->next = clients_used;
adamc@682	206 clients_used = c;
adamc@667	207
adamc@667	208 pthread_mutex_unlock(&clients_mutex);
adamc@667	209
adamc@667	210 return c;
adamc@667	211 }
adamc@667	212
adamc@685	213 static void use_client(client *c) {
adamc@685	214 pthread_mutex_lock(&c->lock);
adamc@685	215 ++c->refcount;
adamc@685	216 pthread_mutex_unlock(&c->lock);
adamc@689	217 pthread_mutex_lock(&c->pull_lock);
adamc@685	218 }
adamc@685	219
adamc@685	220 static void release_client(client *c) {
adamc@689	221 pthread_mutex_unlock(&c->pull_lock);
adamc@685	222 pthread_mutex_lock(&c->lock);
adamc@685	223 --c->refcount;
adamc@685	224 pthread_mutex_unlock(&c->lock);
adamc@689	225
adamc@685	226 }
adamc@685	227
adamc@856	228 static const char begin_msgs[] = "Content-type: text/plain\r\n\r\n";
adamc@667	229
adamc@682	230 static client *find_client(unsigned id) {
adamc@667	231 client *c;
adamc@667	232
adamc@667	233 pthread_mutex_lock(&clients_mutex);
adamc@667	234
adamc@667	235 if (id >= n_clients) {
adamc@667	236 pthread_mutex_unlock(&clients_mutex);
adamc@668	237 return NULL;
adamc@667	238 }
adamc@667	239
adamc@667	240 c = clients[id];
adamc@667	241
adamc@668	242 pthread_mutex_unlock(&clients_mutex);
adamc@668	243 return c;
adamc@668	244 }
adamc@668	245
adamc@856	246 static char *on_success = "HTTP/1.1 200 OK\r\n";
adamc@1065	247 static char *on_redirect = "HTTP/1.1 303 See Other\r\n";
adamc@856	248
adamc@856	249 void uw_set_on_success(char *s) {
adamc@856	250 on_success = s;
adamc@856	251 }
adamc@856	252
adamc@863	253 void uw_client_connect(unsigned id, int pass, int sock,
adamc@863	254 int (send)(int sockfd, const void buf, ssize_t len),
adamc@864	255 int (*close)(int fd),
adamc@864	256 void *logger_data, uw_logger log_error) {
adamc@682	257 client *c = find_client(id);
adamc@668	258
adamc@668	259 if (c == NULL) {
adamc@667	260 close(sock);
adamc@864	261 log_error(logger_data, "Out-of-bounds client request (%u)\n", id);
adamc@667	262 return;
adamc@667	263 }
adamc@667	264
adamc@682	265 pthread_mutex_lock(&c->lock);
adamc@671	266
adamc@682	267 if (c->mode != USED) {
adamc@682	268 pthread_mutex_unlock(&c->lock);
adamc@667	269 close(sock);
adamc@864	270 log_error(logger_data, "Client request for unused slot (%u)\n", id);
adamc@667	271 return;
adamc@667	272 }
adamc@667	273
adamc@682	274 if (pass != c->pass) {
adamc@682	275 pthread_mutex_unlock(&c->lock);
adamc@682	276 close(sock);
adamc@864	277 log_error(logger_data, "Wrong client password (%u, %d)\n", id, pass);
adamc@682	278 return;
adamc@667	279 }
adamc@667	280
adamc@682	281 if (c->sock != -1) {
adamc@863	282 c->close(c->sock);
adamc@682	283 c->sock = -1;
adamc@682	284 }
adamc@667	285
adamc@682	286 c->last_contact = time(NULL);
adamc@682	287
adamc@682	288 if (buf_used(&c->msgs) > 0) {
adamc@863	289 send(sock, on_success, strlen(on_success));
adamc@863	290 send(sock, begin_msgs, sizeof(begin_msgs) - 1);
adamc@863	291 send(sock, c->msgs.start, buf_used(&c->msgs));
adamc@682	292 buf_reset(&c->msgs);
adamc@667	293 close(sock);
adamc@667	294 }
adamc@863	295 else {
adamc@682	296 c->sock = sock;
adamc@863	297 c->send = send;
adamc@863	298 c->close = close;
adamc@863	299 }
adamc@667	300
adamc@682	301 pthread_mutex_unlock(&c->lock);
adamc@667	302 }
adamc@667	303
adamc@682	304 static void free_client(client *c) {
adamc@682	305 c->mode = UNUSED;
adamc@682	306 c->pass = -1;
adamc@667	307
adamc@682	308 c->next = clients_free;
adamc@682	309 clients_free = c;
adamc@667	310 }
adamc@667	311
adamc@682	312 static uw_Basis_channel new_channel(client *c) {
adamc@682	313 uw_Basis_channel ch = {c->id, c->n_channels++};
adamc@668	314 return ch;
adamc@668	315 }
adamc@668	316
adamc@685	317 static void client_send(client c, buf msg) {
adamc@685	318 pthread_mutex_lock(&c->lock);
adamc@671	319
adamc@682	320 if (c->sock != -1) {
adamc@863	321 c->send(c->sock, on_success, strlen(on_success));
adamc@863	322 c->send(c->sock, begin_msgs, sizeof(begin_msgs) - 1);
adamc@863	323 c->send(c->sock, msg->start, buf_used(msg));
adamc@863	324 c->close(c->sock);
adamc@682	325 c->sock = -1;
adamc@1113	326 } else if (buf_append(&c->msgs, msg->start, buf_used(msg)))
adamc@1113	327 fprintf(stderr, "Client message buffer size exceeded");
adamc@671	328
adamc@685	329 pthread_mutex_unlock(&c->lock);
adamc@668	330 }
adamc@668	331
adamc@668	332
adamc@668	333 // Global entry points
adamc@668	334
adamc@1164	335 extern void uw_global_custom();
adamc@1104	336 extern void uw_init_crypto();
adamc@1104	337
adamc@668	338 void uw_global_init() {
adamc@668	339 srand(time(NULL) ^ getpid());
adamc@668	340
adamc@668	341 clients = malloc(0);
adamc@1104	342
adamc@1164	343 uw_global_custom();
adamc@1104	344 uw_init_crypto();
adamc@1094	345 }
adamc@1094	346
adamc@1094	347 void uw_app_init(uw_app *app) {
adamc@1094	348 app->client_init();
adamc@668	349 }
adamc@668	350
adam@1332	351 int uw_time = 0, uw_time_max = 0, uw_min_heap = 0;
adamc@1114	352
adamc@668	353
adamc@667	354 // Single-request state
adamc@667	355
adamc@323	356 typedef struct regions {
adamc@323	357 struct regions *next;
adamc@323	358 } regions;
adamc@323	359
adamc@425	360 typedef struct {
adamc@425	361 void (func)(void);
adamc@425	362 void *arg;
adamc@425	363 } cleanup;
adamc@425	364
adamc@671	365 typedef struct {
adamc@682	366 unsigned client;
adamc@671	367 buf msgs;
adamc@682	368 } delta;
adamc@671	369
adamc@737	370 typedef enum {
adamc@759	371 UNSET, NORMAL, FIL, SUBFORM, SUBFORMS, ENTRY
adamc@737	372 } input_kind;
adamc@737	373
adamc@756	374 typedef struct input {
adamc@737	375 input_kind kind;
adamc@737	376 union {
adamc@737	377 char *normal;
adamc@739	378 uw_Basis_file file;
adamc@756	379 struct {
adamc@759	380 struct input fields, parent;
adamc@756	381 } subform;
adamc@759	382 struct {
adamc@759	383 struct input entries, parent;
adamc@759	384 } subforms;
adamc@759	385 struct {
adamc@759	386 struct input fields, next, *parent;
adamc@759	387 } entry;
adamc@737	388 } data;
adamc@737	389 } input;
adamc@737	390
adamc@771	391 typedef struct {
adamc@771	392 void *data;
adam@1327	393 uw_callback commit, rollback;
adam@1327	394 uw_callback_with_retry free;
adamc@771	395 } transactional;
adamc@771	396
adamc@1061	397 typedef struct {
adamc@1061	398 char *name;
adamc@1061	399 void *data;
adamc@1061	400 void (free)(void);
adamc@1061	401 } global;
adamc@1061	402
adamc@311	403 struct uw_context {
adamc@1094	404 uw_app *app;
adamc@1094	405
adamc@854	406 char (get_header)(void , const char );
adamc@854	407 void *get_header_data;
adamc@457	408
adamc@666	409 buf outHeaders, page, heap, script;
adamc@1065	410 int returning_indirectly;
adamc@759	411 input inputs, subinputs, *cur_container;
adamc@1094	412 size_t sz_inputs, n_subinputs, used_subinputs;
adamc@167	413
adamc@565	414 int source_count;
adamc@562	415
adamc@272	416 void *db;
adamc@272	417
adamc@167	418 jmp_buf jmp_buf;
adamc@167	419
adamc@323	420 regions *regions;
adamc@323	421
adamc@425	422 cleanup cleanup, cleanup_front, *cleanup_back;
adamc@425	423
adamc@1094	424 const char *script_header;
adamc@643	425
adamc@736	426 int needs_push, needs_sig;
adamc@693	427
adamc@682	428 size_t n_deltas, used_deltas;
adamc@682	429 delta *deltas;
adamc@671	430
adamc@682	431 client *client;
adamc@682	432
adamc@771	433 transactional *transactionals;
adamc@771	434 size_t n_transactionals, used_transactionals;
adamc@771	435
adamc@1061	436 global *globals;
adamc@1061	437 size_t n_globals;
adamc@1061	438
adamc@1066	439 char *current_url;
adamc@1066	440
adamc@1114	441 int deadline;
adamc@1114	442
adamc@1121	443 void *client_data;
adamc@1121	444
adam@1334	445 void *logger_data;
adam@1334	446 uw_logger log_debug;
adam@1334	447
adamc@167	448 char error_message[ERROR_BUF_LEN];
adamc@117	449 };
adamc@117	450
adamc@1113	451 size_t uw_headers_max = SIZE_MAX;
adamc@1113	452 size_t uw_page_max = SIZE_MAX;
adamc@1113	453 size_t uw_heap_max = SIZE_MAX;
adamc@1113	454 size_t uw_script_max = SIZE_MAX;
adamc@1113	455
adam@1334	456 uw_context uw_init(void *logger_data, uw_logger log_debug) {
adamc@311	457 uw_context ctx = malloc(sizeof(struct uw_context));
adamc@136	458
adamc@1094	459 ctx->app = NULL;
adamc@1094	460
adamc@854	461 ctx->get_header = NULL;
adamc@854	462 ctx->get_header_data = NULL;
adamc@457	463
adamc@1113	464 buf_init(uw_headers_max, &ctx->outHeaders, 0);
adamc@1113	465 buf_init(uw_page_max, &ctx->page, 0);
adamc@1065	466 ctx->returning_indirectly = 0;
adam@1332	467 buf_init(uw_heap_max, &ctx->heap, uw_min_heap);
adamc@1113	468 buf_init(uw_script_max, &ctx->script, 1);
adamc@667	469 ctx->script.start[0] = 0;
adamc@136	470
adamc@1094	471 ctx->inputs = malloc(0);
adamc@759	472 ctx->cur_container = NULL;
adamc@756	473 ctx->subinputs = malloc(0);
adamc@1094	474 ctx->sz_inputs = ctx->n_subinputs = ctx->used_subinputs = 0;
adamc@144	475
adamc@272	476 ctx->db = NULL;
adamc@272	477
adamc@323	478 ctx->regions = NULL;
adamc@323	479
adamc@425	480 ctx->cleanup_front = ctx->cleanup_back = ctx->cleanup = malloc(0);
adamc@425	481
adamc@643	482 ctx->script_header = "";
adamc@693	483 ctx->needs_push = 0;
adamc@736	484 ctx->needs_sig = 0;
adamc@1104	485
adamc@565	486 ctx->source_count = 0;
adamc@562	487
adamc@682	488 ctx->n_deltas = ctx->used_deltas = 0;
adamc@671	489 ctx->deltas = malloc(0);
adamc@671	490
adamc@700	491 ctx->client = NULL;
adamc@700	492
adamc@700	493 ctx->error_message[0] = 0;
adamc@700	494
adamc@771	495 ctx->transactionals = malloc(0);
adamc@771	496 ctx->n_transactionals = ctx->used_transactionals = 0;
adamc@771	497
adamc@1061	498 ctx->globals = malloc(0);
adamc@1061	499 ctx->n_globals = 0;
adamc@1061	500
adamc@1066	501 ctx->current_url = "";
adamc@1066	502
adamc@1114	503 ctx->deadline = INT_MAX;
adamc@1114	504
adamc@1121	505 ctx->client_data = uw_init_client_data();
adamc@1121	506
adam@1334	507 ctx->logger_data = logger_data;
adam@1334	508 ctx->log_debug = log_debug;
adam@1334	509
adamc@117	510 return ctx;
adamc@106	511 }
adamc@106	512
adamc@1113	513 size_t uw_inputs_max = SIZE_MAX;
adamc@1113	514
adamc@1121	515 uw_app *uw_get_app(uw_context ctx) {
adamc@1121	516 return ctx->app;
adamc@1121	517 }
adamc@1121	518
adamc@1113	519 int uw_set_app(uw_context ctx, uw_app *app) {
adamc@1094	520 ctx->app = app;
adamc@1094	521
adamc@1105	522 if (app && app->inputs_len > ctx->sz_inputs) {
adamc@1113	523 if (app->inputs_len > uw_inputs_max)
adamc@1113	524 return 1;
adamc@1113	525
adamc@1094	526 ctx->sz_inputs = app->inputs_len;
adamc@1094	527 ctx->inputs = realloc(ctx->inputs, ctx->sz_inputs * sizeof(input));
adamc@1094	528 memset(ctx->inputs, 0, ctx->sz_inputs * sizeof(input));
adamc@1094	529 }
adamc@1134	530
adamc@1134	531 return 0;
adamc@1094	532 }
adamc@1094	533
adamc@1121	534 void uw_set_client_data(uw_context ctx, void *data) {
adamc@1121	535 uw_copy_client_data(ctx->client_data, data);
adamc@1121	536 }
adamc@1121	537
adamc@311	538 void uw_set_db(uw_context ctx, void *db) {
adamc@272	539 ctx->db = db;
adamc@272	540 }
adamc@272	541
adamc@311	542 void *uw_get_db(uw_context ctx) {
adamc@272	543 return ctx->db;
adamc@272	544 }
adamc@272	545
adamc@311	546 void uw_free(uw_context ctx) {
adamc@671	547 size_t i;
adamc@671	548
adamc@666	549 buf_free(&ctx->outHeaders);
adamc@666	550 buf_free(&ctx->script);
adamc@666	551 buf_free(&ctx->page);
adamc@666	552 buf_free(&ctx->heap);
adamc@144	553 free(ctx->inputs);
adamc@756	554 free(ctx->subinputs);
adamc@425	555 free(ctx->cleanup);
adamc@771	556 free(ctx->transactionals);
adamc@1121	557 uw_free_client_data(ctx->client_data);
adamc@671	558
adamc@682	559 for (i = 0; i < ctx->n_deltas; ++i)
adamc@671	560 buf_free(&ctx->deltas[i].msgs);
marco-oweber@1330	561 free(ctx->deltas);
adamc@671	562
adamc@1061	563 for (i = 0; i < ctx->n_globals; ++i)
adamc@1089	564 if (ctx->globals[i].free)
adamc@1089	565 ctx->globals[i].free(ctx->globals[i].data);
marco-oweber@1330	566 free(ctx->globals);
adamc@1061	567
adamc@136	568 free(ctx);
adamc@136	569 }
adamc@136	570
adamc@562	571 void uw_reset_keep_error_message(uw_context ctx) {
adamc@666	572 buf_reset(&ctx->outHeaders);
adamc@666	573 buf_reset(&ctx->script);
adamc@667	574 ctx->script.start[0] = 0;
adamc@666	575 buf_reset(&ctx->page);
adamc@1065	576 ctx->returning_indirectly = 0;
adamc@666	577 buf_reset(&ctx->heap);
adamc@323	578 ctx->regions = NULL;
adamc@425	579 ctx->cleanup_front = ctx->cleanup;
adamc@565	580 ctx->source_count = 0;
adamc@682	581 ctx->used_deltas = 0;
adamc@682	582 ctx->client = NULL;
adamc@759	583 ctx->cur_container = NULL;
adamc@771	584 ctx->used_transactionals = 0;
adamc@1117	585 ctx->script_header = "";
adamc@167	586 }
adamc@167	587
adamc@562	588 void uw_reset_keep_request(uw_context ctx) {
adamc@562	589 uw_reset_keep_error_message(ctx);
adamc@562	590 ctx->error_message[0] = 0;
adamc@167	591 }
adamc@167	592
adamc@311	593 void uw_reset(uw_context ctx) {
adamc@311	594 uw_reset_keep_request(ctx);
adamc@1105	595 if (ctx->app)
adamc@1105	596 memset(ctx->inputs, 0, ctx->app->inputs_len * sizeof(input));
adamc@756	597 memset(ctx->subinputs, 0, ctx->n_subinputs * sizeof(input));
adamc@756	598 ctx->used_subinputs = 0;
adamc@144	599 }
adamc@144	600
adamc@311	601 failure_kind uw_begin_init(uw_context ctx) {
adamc@272	602 int r = setjmp(ctx->jmp_buf);
adamc@272	603
adamc@1105	604 if (r == 0 && ctx->app)
adamc@1094	605 ctx->app->db_init(ctx);
adamc@272	606
adamc@272	607 return r;
adamc@272	608 }
adamc@272	609
adamc@1118	610 void uw_close(uw_context ctx) {
adamc@1118	611 ctx->app->db_close(ctx);
adamc@1118	612 }
adamc@1118	613
adamc@854	614 void uw_set_headers(uw_context ctx, char (get_header)(void , const char ), void *get_header_data) {
adamc@854	615 ctx->get_header = get_header;
adamc@854	616 ctx->get_header_data = get_header_data;
adamc@742	617 }
adamc@742	618
adamc@801	619 static void uw_set_error(uw_context ctx, const char *fmt, ...) {
adamc@801	620 va_list ap;
adamc@801	621 va_start(ap, fmt);
adamc@801	622
adamc@801	623 vsnprintf(ctx->error_message, ERROR_BUF_LEN, fmt, ap);
adamc@801	624 }
adamc@801	625
adamc@1131	626 int uw_has_error(uw_context ctx) {
adamc@1131	627 return ctx->error_message[0] != 0;
adamc@1131	628 }
adamc@1131	629
adamc@311	630 __attribute__((noreturn)) void uw_error(uw_context ctx, failure_kind fk, const char *fmt, ...) {
adamc@425	631 cleanup *cl;
adamc@425	632
adamc@167	633 va_list ap;
adamc@167	634 va_start(ap, fmt);
adamc@167	635
adamc@167	636 vsnprintf(ctx->error_message, ERROR_BUF_LEN, fmt, ap);
adamc@167	637
adamc@425	638 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adamc@425	639 cl->func(cl->arg);
adamc@425	640
adamc@425	641 ctx->cleanup_front = ctx->cleanup;
adamc@425	642
adamc@190	643 longjmp(ctx->jmp_buf, fk);
adamc@167	644 }
adamc@167	645
adamc@1113	646 size_t uw_cleanup_max = SIZE_MAX;
adamc@1113	647
adamc@425	648 void uw_push_cleanup(uw_context ctx, void (func)(void ), void *arg) {
adamc@425	649 if (ctx->cleanup_front >= ctx->cleanup_back) {
adamc@425	650 int len = ctx->cleanup_back - ctx->cleanup, newLen;
adamc@425	651 if (len == 0)
adamc@425	652 newLen = 1;
adamc@425	653 else
adamc@428	654 newLen = len * 2;
adamc@1113	655
adamc@1134	656 if (newLen > uw_cleanup_max) {
adamc@1113	657 if (len+1 <= uw_cleanup_max)
adamc@1113	658 newLen = uw_cleanup_max;
adamc@1113	659 else
adamc@1113	660 uw_error(ctx, FATAL, "Exceeded limit on number of cleanup handlers");
adamc@1134	661 }
adamc@1113	662
adamc@470	663 ctx->cleanup = realloc(ctx->cleanup, newLen * sizeof(cleanup));
adamc@425	664 ctx->cleanup_front = ctx->cleanup + len;
adamc@425	665 ctx->cleanup_back = ctx->cleanup + newLen;
adamc@425	666 }
adamc@425	667
adamc@425	668 ctx->cleanup_front->func = func;
adamc@425	669 ctx->cleanup_front->arg = arg;
adamc@425	670 ++ctx->cleanup_front;
adamc@425	671 }
adamc@425	672
adamc@682	673 uw_Basis_string uw_Basis_requestHeader(uw_context ctx, uw_Basis_string h) {
adamc@854	674 return ctx->get_header(ctx->get_header_data, h);
adamc@682	675 }
adamc@682	676
adamc@682	677 void uw_login(uw_context ctx) {
adamc@693	678 if (ctx->needs_push) {
adamc@682	679 char id_s, pass_s;
adamc@682	680
adamc@682	681 if ((id_s = uw_Basis_requestHeader(ctx, "UrWeb-Client"))
adamc@682	682 && (pass_s = uw_Basis_requestHeader(ctx, "UrWeb-Pass"))) {
adamc@682	683 unsigned id = atoi(id_s);
adamc@682	684 int pass = atoi(pass_s);
adamc@682	685 client *c = find_client(id);
adamc@682	686
adamc@682	687 if (c == NULL)
adamc@682	688 uw_error(ctx, FATAL, "Unknown client ID in HTTP headers (%s, %s)", id_s, pass_s);
adamc@682	689 else {
adamc@685	690 use_client(c);
adamc@682	691 ctx->client = c;
adamc@682	692
adamc@682	693 if (c->mode != USED)
adamc@682	694 uw_error(ctx, FATAL, "Stale client ID (%u) in subscription request", id);
adamc@682	695 if (c->pass != pass)
adamc@682	696 uw_error(ctx, FATAL, "Wrong client password (%u, %d) in subscription request", id, pass);
adamc@682	697 }
adamc@682	698 } else {
adamc@682	699 client *c = new_client();
adamc@1113	700
adamc@1113	701 if (c == NULL)
adamc@1113	702 uw_error(ctx, FATAL, "Limit exceeded on number of message-passing clients");
adamc@1113	703
adamc@685	704 use_client(c);
adamc@1121	705 uw_copy_client_data(c->data, ctx->client_data);
adamc@682	706 ctx->client = c;
adamc@864	707 }
adamc@682	708 }
adamc@682	709 }
adamc@682	710
adamc@671	711 failure_kind uw_begin(uw_context ctx, char *path) {
adamc@671	712 int r = setjmp(ctx->jmp_buf);
adamc@671	713
adamc@671	714 if (r == 0) {
adamc@1094	715 if (ctx->app->db_begin(ctx))
adamc@671	716 uw_error(ctx, BOUNDED_RETRY, "Error running SQL BEGIN");
adamc@682	717
adamc@1094	718 ctx->app->handle(ctx, path);
adamc@671	719 }
adamc@671	720
adamc@671	721 return r;
adamc@671	722 }
adamc@671	723
adam@1294	724 failure_kind uw_begin_onError(uw_context ctx, char *msg) {
adam@1294	725 int r = setjmp(ctx->jmp_buf);
adam@1294	726
adam@1294	727 if (ctx->app->on_error) {
adam@1294	728 if (r == 0) {
adam@1294	729 if (ctx->app->db_begin(ctx))
adam@1294	730 uw_error(ctx, BOUNDED_RETRY, "Error running SQL BEGIN");
adam@1294	731
adam@1294	732 ctx->app->on_error(ctx, msg);
adam@1294	733 }
adam@1294	734
adam@1294	735 return r;
adam@1294	736 } else
adam@1294	737 uw_error(ctx, FATAL, "Tried to run nonexistent onError handler");
adam@1294	738 }
adam@1294	739
adamc@772	740 uw_Basis_client uw_Basis_self(uw_context ctx) {
adamc@682	741 if (ctx->client == NULL)
adamc@682	742 uw_error(ctx, FATAL, "Call to Basis.self() from page that has only server-side code");
adamc@682	743
adamc@682	744 return ctx->client->id;
adamc@682	745 }
adamc@682	746
adamc@425	747 void uw_pop_cleanup(uw_context ctx) {
adamc@425	748 if (ctx->cleanup_front == ctx->cleanup)
adamc@425	749 uw_error(ctx, FATAL, "Attempt to pop from empty cleanup action stack");
adamc@425	750
adamc@425	751 --ctx->cleanup_front;
adamc@425	752 ctx->cleanup_front->func(ctx->cleanup_front->arg);
adamc@425	753 }
adamc@425	754
adamc@311	755 char *uw_error_message(uw_context ctx) {
adamc@167	756 return ctx->error_message;
adamc@167	757 }
adamc@167	758
adamc@1115	759 void uw_set_error_message(uw_context ctx, const char *msg) {
adamc@1115	760 strncpy(ctx->error_message, msg, sizeof(ctx->error_message));
adamc@1115	761 ctx->error_message[sizeof(ctx->error_message)-1] = 0;
adamc@1115	762 }
adamc@1115	763
adamc@759	764 static input *INP(uw_context ctx) {
adamc@759	765 if (ctx->cur_container == NULL)
adamc@759	766 return ctx->inputs;
adamc@759	767 else if (ctx->cur_container->kind == SUBFORM)
adamc@759	768 return ctx->cur_container->data.subform.fields;
adamc@759	769 else if (ctx->cur_container->kind == ENTRY)
adamc@759	770 return ctx->cur_container->data.entry.fields;
adamc@759	771 else
adamc@760	772 uw_error(ctx, FATAL, "INP: Wrong kind (%d, %p)", ctx->cur_container->kind, ctx->cur_container);
adamc@759	773 }
adamc@759	774
adamc@760	775 static void adjust_pointer(input *ptr, input old_start, input *new_start, size_t len) {
adamc@760	776 if (ptr != NULL && ptr >= old_start && *ptr < old_start + len)
adamc@760	777 *ptr += new_start - old_start;
adamc@760	778 }
adamc@760	779
adamc@760	780 static void adjust_input(input x, input old_start, input *new_start, size_t len) {
adamc@759	781 switch (x->kind) {
adamc@759	782 case SUBFORM:
adamc@760	783 adjust_pointer(&x->data.subform.fields, old_start, new_start, len);
adamc@760	784 adjust_pointer(&x->data.subform.parent, old_start, new_start, len);
adamc@759	785 break;
adamc@759	786 case SUBFORMS:
adamc@760	787 adjust_pointer(&x->data.subforms.entries, old_start, new_start, len);
adamc@760	788 adjust_pointer(&x->data.subforms.parent, old_start, new_start, len);
adamc@759	789 break;
adamc@759	790 case ENTRY:
adamc@760	791 adjust_pointer(&x->data.entry.fields, old_start, new_start, len);
adamc@760	792 adjust_pointer(&x->data.entry.next, old_start, new_start, len);
adamc@760	793 adjust_pointer(&x->data.entry.parent, old_start, new_start, len);
adamc@1134	794 break;
adamc@1134	795 default:
adamc@1134	796 break;
adamc@759	797 }
adamc@759	798 }
adamc@759	799
adamc@1113	800 size_t uw_subinputs_max = SIZE_MAX;
adamc@1113	801
adamc@759	802 static input *check_input_space(uw_context ctx, size_t len) {
adamc@759	803 size_t i;
adamc@759	804 input *r;
adamc@759	805
adamc@759	806 if (ctx->used_subinputs + len >= ctx->n_subinputs) {
adamc@1113	807 if (ctx->used_subinputs + len > uw_subinputs_max)
adamc@1113	808 uw_error(ctx, FATAL, "Exceeded limit on number of subinputs");
adamc@1113	809
adamc@759	810 input new_subinputs = realloc(ctx->subinputs, sizeof(input) (ctx->used_subinputs + len));
adamc@759	811
adamc@760	812 if (ctx->subinputs != new_subinputs) {
adamc@760	813 for (i = 0; i < ctx->used_subinputs; ++i)
adamc@760	814 adjust_input(&new_subinputs[i], ctx->subinputs, new_subinputs, ctx->used_subinputs);
adamc@1094	815 for (i = 0; i < ctx->app->inputs_len; ++i)
adamc@760	816 adjust_input(&ctx->inputs[i], ctx->subinputs, new_subinputs, ctx->used_subinputs);
adamc@760	817
adamc@760	818 adjust_pointer(&ctx->cur_container, ctx->subinputs, new_subinputs, ctx->used_subinputs);
adamc@760	819
adamc@760	820 ctx->n_subinputs = ctx->used_subinputs + len;
adamc@760	821 ctx->subinputs = new_subinputs;
adamc@760	822 }
adamc@759	823 }
adamc@759	824
adamc@759	825 r = &ctx->subinputs[ctx->used_subinputs];
adamc@759	826
adamc@759	827 for (i = 0; i < len; ++i)
adamc@759	828 ctx->subinputs[ctx->used_subinputs++].kind = UNUSED;
adamc@759	829
adamc@759	830 return r;
adamc@759	831 }
adamc@756	832
adamc@801	833 int uw_set_input(uw_context ctx, const char name, char value) {
adamc@1050	834 //printf("Input name %s\n", name);
adamc@1038	835
adamc@756	836 if (!strcasecmp(name, ".b")) {
adamc@1094	837 int n = ctx->app->input_num(value);
adamc@756	838 input *inps;
adamc@756	839
adamc@801	840 if (n < 0) {
adamc@801	841 uw_set_error(ctx, "Bad subform name %s", value);
adamc@801	842 return -1;
adamc@801	843 }
adamc@801	844
adamc@1094	845 if (n >= ctx->app->inputs_len) {
adamc@801	846 uw_set_error(ctx, "For subform name %s, index %d is out of range", value, n);
adamc@801	847 return -1;
adamc@801	848 }
adamc@756	849
adamc@1094	850 inps = check_input_space(ctx, ctx->app->inputs_len);
adamc@759	851
adamc@759	852 INP(ctx)[n].kind = SUBFORM;
adamc@759	853 INP(ctx)[n].data.subform.parent = ctx->cur_container;
adamc@759	854 INP(ctx)[n].data.subform.fields = inps;
adamc@759	855 ctx->cur_container = &INP(ctx)[n];
adamc@756	856 } else if (!strcasecmp(name, ".e")) {
adamc@756	857 input *tmp;
adamc@756	858
adamc@801	859 if (ctx->cur_container == NULL) {
adamc@801	860 uw_set_error(ctx, "Unmatched subform closer");
adamc@801	861 return -1;
adamc@801	862 }
adamc@756	863
adamc@759	864 tmp = ctx->cur_container;
adamc@759	865 switch (tmp->kind) {
adamc@759	866 case SUBFORM:
adamc@759	867 ctx->cur_container = tmp->data.subform.parent;
adamc@759	868 tmp->data.subform.parent = NULL;
adamc@759	869 break;
adamc@759	870 case SUBFORMS:
adamc@759	871 ctx->cur_container = tmp->data.subforms.parent;
adamc@759	872 tmp->data.subforms.parent = NULL;
adamc@759	873 break;
adamc@759	874 case ENTRY:
adamc@759	875 ctx->cur_container = tmp->data.entry.parent;
adamc@759	876 break;
adamc@759	877 default:
adamc@801	878 uw_set_error(ctx, "uw_set_input: Wrong kind");
adamc@801	879 return -1;
adamc@759	880 }
adamc@759	881 } else if (!strcasecmp(name, ".s")) {
adamc@1094	882 int n = ctx->app->input_num(value);
adamc@759	883
adamc@801	884 if (n < 0) {
adamc@801	885 uw_set_error(ctx, "Bad subforms name %s", value);
adamc@801	886 return -1;
adamc@801	887 }
adamc@801	888
adamc@1094	889 if (n >= ctx->app->inputs_len) {
adamc@801	890 uw_set_error(ctx, "For subforms name %s, index %d is out of range", value, n);
adamc@801	891 return -1;
adamc@801	892 }
adamc@759	893
adamc@759	894 INP(ctx)[n].kind = SUBFORMS;
adamc@759	895 INP(ctx)[n].data.subforms.parent = ctx->cur_container;
adamc@759	896 INP(ctx)[n].data.subforms.entries = NULL;
adamc@759	897 ctx->cur_container = &INP(ctx)[n];
adamc@759	898 } else if (!strcasecmp(name, ".i")) {
adamc@759	899 input *inps;
adamc@759	900
adamc@801	901 if (!ctx->cur_container) {
adamc@801	902 uw_set_error(ctx, "New entry without container");
adamc@801	903 return -1;
adamc@801	904 }
adamc@801	905
adamc@801	906 if (ctx->cur_container->kind != SUBFORMS) {
adamc@801	907 uw_set_error(ctx, "Bad kind for entry parent");
adamc@801	908 return -1;
adamc@801	909 }
adamc@759	910
adamc@1094	911 inps = check_input_space(ctx, ctx->app->inputs_len + 1);
adamc@759	912
adamc@759	913 inps->kind = ENTRY;
adamc@759	914 inps->data.entry.parent = ctx->cur_container;
adamc@759	915 inps->data.entry.next = ctx->cur_container->data.subforms.entries;
adamc@759	916 ctx->cur_container->data.subforms.entries = inps;
adamc@759	917
adamc@759	918 inps->data.entry.fields = inps+1;
adamc@759	919 ctx->cur_container = inps;
adamc@756	920 } else {
adamc@1094	921 int n = ctx->app->input_num(name);
adamc@756	922
adamc@801	923 if (n < 0) {
adamc@1038	924 if (!strcmp(name, "null"))
adamc@1038	925 return 0;
adamc@801	926 uw_set_error(ctx, "Bad input name %s", name);
adamc@801	927 return -1;
adamc@801	928 }
adamc@801	929
adamc@1094	930 if (n >= ctx->app->inputs_len) {
adamc@801	931 uw_set_error(ctx, "For input name %s, index %d is out of range", name, n);
adamc@801	932 return -1;
adamc@801	933 }
adamc@756	934
adamc@756	935 INP(ctx)[n].kind = NORMAL;
adamc@756	936 INP(ctx)[n].data.normal = value;
adamc@756	937 }
adamc@801	938
adamc@801	939 return 0;
adamc@144	940 }
adamc@144	941
adamc@311	942 char *uw_get_input(uw_context ctx, int n) {
adamc@169	943 if (n < 0)
adamc@311	944 uw_error(ctx, FATAL, "Negative input index %d", n);
adamc@1094	945 if (n >= ctx->app->inputs_len)
adamc@311	946 uw_error(ctx, FATAL, "Out-of-bounds input index %d", n);
adamc@737	947
adamc@756	948 switch (INP(ctx)[n].kind) {
adamc@737	949 case UNSET:
adamc@737	950 return NULL;
adamc@739	951 case FIL:
adamc@739	952 uw_error(ctx, FATAL, "Tried to read a file form input as normal");
adamc@756	953 case SUBFORM:
adamc@756	954 uw_error(ctx, FATAL, "Tried to read a subform form input as normal");
adamc@759	955 case SUBFORMS:
adamc@759	956 uw_error(ctx, FATAL, "Tried to read a subforms form input as normal");
adamc@759	957 case ENTRY:
adamc@759	958 uw_error(ctx, FATAL, "Tried to read an entry form input as normal");
adamc@737	959 case NORMAL:
adamc@756	960 return INP(ctx)[n].data.normal;
adamc@737	961 default:
adamc@737	962 uw_error(ctx, FATAL, "Impossible input kind");
adamc@737	963 }
adamc@138	964 }
adamc@138	965
adamc@311	966 char *uw_get_optional_input(uw_context ctx, int n) {
adamc@190	967 if (n < 0)
adamc@311	968 uw_error(ctx, FATAL, "Negative input index %d", n);
adamc@1094	969 if (n >= ctx->app->inputs_len)
adamc@311	970 uw_error(ctx, FATAL, "Out-of-bounds input index %d", n);
adamc@737	971
adamc@756	972 switch (INP(ctx)[n].kind) {
adamc@737	973 case UNSET:
adamc@737	974 return "";
adamc@739	975 case FIL:
adamc@739	976 uw_error(ctx, FATAL, "Tried to read a file form input as normal");
adamc@756	977 case SUBFORM:
adamc@756	978 uw_error(ctx, FATAL, "Tried to read a subform form input as normal");
adamc@759	979 case SUBFORMS:
adamc@759	980 uw_error(ctx, FATAL, "Tried to read a subforms form input as normal");
adamc@759	981 case ENTRY:
adamc@759	982 uw_error(ctx, FATAL, "Tried to read an entry form input as normal");
adamc@737	983 case NORMAL:
adamc@756	984 return INP(ctx)[n].data.normal;
adamc@737	985 default:
adamc@737	986 uw_error(ctx, FATAL, "Impossible input kind");
adamc@737	987 }
adamc@737	988 }
adamc@737	989
adamc@801	990 int uw_set_file_input(uw_context ctx, const char *name, uw_Basis_file f) {
adamc@1094	991 int n = ctx->app->input_num(name);
adamc@737	992
adamc@801	993 if (n < 0) {
adamc@801	994 uw_set_error(ctx, "Bad file input name %s", name);
adamc@801	995 return -1;
adamc@801	996 }
adamc@801	997
adamc@1094	998 if (n >= ctx->app->inputs_len) {
adamc@801	999 uw_set_error(ctx, "For file input name %s, index %d is out of range", name, n);
adamc@801	1000 return -1;
adamc@801	1001 }
adamc@737	1002
adamc@739	1003 ctx->inputs[n].kind = FIL;
adamc@739	1004 ctx->inputs[n].data.file = f;
adamc@801	1005
adamc@801	1006 return 0;
adamc@737	1007 }
adamc@737	1008
adamc@739	1009 void *uw_malloc(uw_context ctx, size_t len);
adamc@739	1010
adamc@739	1011 uw_Basis_file uw_get_file_input(uw_context ctx, int n) {
adamc@737	1012 if (n < 0)
adamc@737	1013 uw_error(ctx, FATAL, "Negative file input index %d", n);
adamc@1094	1014 if (n >= ctx->app->inputs_len)
adamc@737	1015 uw_error(ctx, FATAL, "Out-of-bounds file input index %d", n);
adamc@737	1016
adamc@756	1017 switch (INP(ctx)[n].kind) {
adamc@737	1018 case UNSET:
adamc@737	1019 {
adamc@739	1020 char *data = uw_malloc(ctx, 0);
adamc@740	1021 uw_Basis_file f = {NULL, "", {0, data}};
adamc@739	1022 return f;
adamc@737	1023 }
adamc@739	1024 case FIL:
adamc@756	1025 return INP(ctx)[n].data.file;
adamc@737	1026 case NORMAL:
adamc@737	1027 uw_error(ctx, FATAL, "Tried to read a normal form input as files");
adamc@756	1028 case SUBFORM:
adamc@756	1029 uw_error(ctx, FATAL, "Tried to read a subform form input as files");
adamc@759	1030 case SUBFORMS:
adamc@759	1031 uw_error(ctx, FATAL, "Tried to read a subforms form input as files");
adamc@759	1032 case ENTRY:
adamc@759	1033 uw_error(ctx, FATAL, "Tried to read an entry form input as files");
adamc@737	1034 default:
adamc@737	1035 uw_error(ctx, FATAL, "Impossible input kind");
adamc@737	1036 }
adamc@190	1037 }
adamc@190	1038
adamc@756	1039 void uw_enter_subform(uw_context ctx, int n) {
adamc@756	1040 if (n < 0)
adamc@756	1041 uw_error(ctx, FATAL, "Negative subform index %d", n);
adamc@1094	1042 if (n >= ctx->app->inputs_len)
adamc@756	1043 uw_error(ctx, FATAL, "Out-of-bounds subform index %d", n);
adamc@756	1044
adamc@756	1045 switch (INP(ctx)[n].kind) {
adamc@756	1046 case UNSET:
adamc@756	1047 uw_error(ctx, FATAL, "Missing subform");
adamc@756	1048 case FIL:
adamc@756	1049 uw_error(ctx, FATAL, "Tried to read a file form input as subform");
adamc@756	1050 case NORMAL:
adamc@756	1051 uw_error(ctx, FATAL, "Tried to read a normal form input as subform");
adamc@759	1052 case SUBFORMS:
adamc@759	1053 uw_error(ctx, FATAL, "Tried to read a subforms form input as subform");
adamc@759	1054 case ENTRY:
adamc@759	1055 uw_error(ctx, FATAL, "Tried to read an entry form input as subform");
adamc@756	1056 case SUBFORM:
adamc@759	1057 INP(ctx)[n].data.subform.parent = ctx->cur_container;
adamc@760	1058 ctx->cur_container = &INP(ctx)[n];
adamc@756	1059 return;
adamc@756	1060 default:
adamc@756	1061 uw_error(ctx, FATAL, "Impossible input kind");
adamc@756	1062 }
adamc@756	1063 }
adamc@756	1064
adamc@756	1065 void uw_leave_subform(uw_context ctx) {
adamc@756	1066 input *tmp;
adamc@756	1067
adamc@759	1068 if (ctx->cur_container == NULL)
adamc@756	1069 uw_error(ctx, FATAL, "Unmatched uw_leave_subform");
adamc@756	1070
adamc@759	1071 tmp = ctx->cur_container;
adamc@759	1072 ctx->cur_container = tmp->data.subform.parent;
adamc@759	1073 tmp->data.subform.parent = NULL;
adamc@759	1074 }
adamc@759	1075
adamc@759	1076 int uw_enter_subforms(uw_context ctx, int n) {
adamc@759	1077 input *inps;
adamc@759	1078
adamc@759	1079 if (n < 0)
adamc@759	1080 uw_error(ctx, FATAL, "Negative subforms index %d", n);
adamc@1094	1081 if (n >= ctx->app->inputs_len)
adamc@759	1082 uw_error(ctx, FATAL, "Out-of-bounds subforms index %d", n);
adamc@759	1083
adamc@759	1084 switch (INP(ctx)[n].kind) {
adamc@759	1085 case UNSET:
adamc@759	1086 uw_error(ctx, FATAL, "Missing subforms");
adamc@759	1087 case FIL:
adamc@759	1088 uw_error(ctx, FATAL, "Tried to read a file form input as subforms");
adamc@759	1089 case NORMAL:
adamc@759	1090 uw_error(ctx, FATAL, "Tried to read a normal form input %p as subforms", &INP(ctx)[n]);
adamc@759	1091 case SUBFORM:
adamc@759	1092 uw_error(ctx, FATAL, "Tried to read a subform form input as subforms");
adamc@759	1093 case ENTRY:
adamc@759	1094 uw_error(ctx, FATAL, "Tried to read an entry form input as subforms");
adamc@759	1095 case SUBFORMS:
adamc@759	1096 inps = INP(ctx)[n].data.subforms.entries;
adamc@759	1097 if (inps) {
adamc@759	1098 INP(ctx)[n].data.subforms.parent = ctx->cur_container;
adamc@759	1099 ctx->cur_container = INP(ctx)[n].data.subforms.entries;
adamc@759	1100 return 1;
adamc@759	1101 } else
adamc@759	1102 return 0;
adamc@759	1103 default:
adamc@759	1104 uw_error(ctx, FATAL, "Impossible input kind");
adamc@759	1105 }
adamc@759	1106 }
adamc@759	1107
adamc@759	1108 int uw_next_entry(uw_context ctx) {
adamc@759	1109 if (ctx->cur_container == NULL)
adamc@759	1110 uw_error(ctx, FATAL, "uw_next_entry(NULL)");
adamc@759	1111
adamc@759	1112 switch (ctx->cur_container->kind) {
adamc@759	1113 case UNSET:
adamc@759	1114 uw_error(ctx, FATAL, "Missing entry");
adamc@759	1115 case FIL:
adamc@759	1116 uw_error(ctx, FATAL, "Tried to read a file form input as entry");
adamc@759	1117 case NORMAL:
adamc@759	1118 uw_error(ctx, FATAL, "Tried to read a normal form input as entry");
adamc@759	1119 case SUBFORM:
adamc@759	1120 uw_error(ctx, FATAL, "Tried to read a subform form input as entry");
adamc@759	1121 case SUBFORMS:
adamc@759	1122 uw_error(ctx, FATAL, "Tried to read a subforms form input as entry");
adamc@759	1123 case ENTRY:
adamc@759	1124 if (ctx->cur_container->data.entry.next) {
adamc@759	1125 ctx->cur_container = ctx->cur_container->data.entry.next;
adamc@759	1126 return 1;
adamc@759	1127 } else {
adamc@759	1128 ctx->cur_container = ctx->cur_container->data.entry.parent->data.subforms.parent;
adamc@759	1129 return 0;
adamc@759	1130 }
adamc@759	1131 default:
adamc@759	1132 uw_error(ctx, FATAL, "Impossible input kind");
adamc@759	1133 }
adamc@756	1134 }
adamc@756	1135
adamc@643	1136 void uw_set_script_header(uw_context ctx, const char *s) {
adamc@643	1137 ctx->script_header = s;
adamc@643	1138 }
adamc@643	1139
adamc@1094	1140 const char *uw_get_url_prefix(uw_context ctx) {
adamc@1094	1141 return ctx->app->url_prefix;
adamc@667	1142 }
adamc@667	1143
adamc@693	1144 void uw_set_needs_push(uw_context ctx, int n) {
adamc@693	1145 ctx->needs_push = n;
adamc@693	1146 }
adamc@693	1147
adamc@736	1148 void uw_set_needs_sig(uw_context ctx, int n) {
adamc@736	1149 ctx->needs_sig = n;
adamc@736	1150 }
adamc@736	1151
adamc@667	1152
adamc@1113	1153 static void buf_check_ctx(uw_context ctx, const char kind, buf b, size_t extra, const char *desc) {
adamc@666	1154 if (b->back - b->front < extra) {
adamc@666	1155 size_t desired = b->front - b->start + extra, next;
adamc@136	1156 char *new_heap;
adamc@136	1157
adamc@666	1158 next = b->back - b->start;
adamc@317	1159 if (next == 0)
adamc@317	1160 next = 1;
adamc@317	1161 for (; next < desired; next *= 2);
adamc@136	1162
adamc@1134	1163 if (next > b->max) {
adamc@1113	1164 if (desired <= b->max)
adamc@1113	1165 next = desired;
adamc@1113	1166 else
adamc@1113	1167 uw_error(ctx, FATAL, "Memory limit exceeded (%s)", kind);
adamc@1134	1168 }
adamc@1113	1169
adamc@666	1170 new_heap = realloc(b->start, next);
adamc@666	1171 b->front = new_heap + (b->front - b->start);
adamc@666	1172 b->back = new_heap + next;
adamc@136	1173
adamc@667	1174 if (new_heap != b->start) {
adamc@666	1175 b->start = new_heap;
adamc@666	1176 uw_error(ctx, UNLIMITED_RETRY, "Couldn't allocate new %s contiguously", desc);
adamc@136	1177 }
adamc@136	1178
adamc@666	1179 b->start = new_heap;
adamc@136	1180 }
adamc@136	1181 }
adamc@136	1182
adamc@832	1183 void uw_check_heap(uw_context ctx, size_t extra) {
adamc@1113	1184 buf_check_ctx(ctx, "heap", &ctx->heap, extra, "heap chunk");
adamc@666	1185 }
adamc@666	1186
adamc@832	1187 char *uw_heap_front(uw_context ctx) {
adamc@832	1188 return ctx->heap.front;
adamc@832	1189 }
adamc@832	1190
adamc@832	1191 void uw_set_heap_front(uw_context ctx, char *fr) {
adamc@832	1192 ctx->heap.front = fr;
adamc@832	1193 }
adamc@832	1194
adamc@311	1195 void *uw_malloc(uw_context ctx, size_t len) {
adamc@136	1196 void *result;
adamc@136	1197
adamc@311	1198 uw_check_heap(ctx, len);
adamc@136	1199
adamc@666	1200 result = ctx->heap.front;
adamc@666	1201 ctx->heap.front += len;
adamc@136	1202 return result;
adamc@117	1203 }
adamc@117	1204
adamc@323	1205 void uw_begin_region(uw_context ctx) {
adamc@666	1206 regions r = (regions ) ctx->heap.front;
adamc@323	1207
adamc@323	1208 uw_check_heap(ctx, sizeof(regions));
adamc@323	1209
adamc@666	1210 ctx->heap.front += sizeof(regions);
adamc@323	1211
adamc@323	1212 r->next = ctx->regions;
adamc@323	1213 ctx->regions = r;
adamc@323	1214 }
adamc@323	1215
adamc@323	1216 void uw_end_region(uw_context ctx) {
adamc@323	1217 regions *r = ctx->regions;
adamc@323	1218
adamc@323	1219 if (r == NULL)
adamc@323	1220 uw_error(ctx, FATAL, "Region stack underflow");
adamc@323	1221
adamc@666	1222 ctx->heap.front = (char *) r;
adamc@323	1223 ctx->regions = r->next;
adamc@323	1224 }
adamc@323	1225
adamc@324	1226 void uw_memstats(uw_context ctx) {
adamc@1134	1227 printf("Headers: %lu/%lu\n", (unsigned long)buf_used(&ctx->outHeaders), (unsigned long)buf_avail(&ctx->outHeaders));
adamc@1134	1228 printf("Script: %lu/%lu\n", (unsigned long)buf_used(&ctx->script), (unsigned long)buf_avail(&ctx->script));
adamc@1134	1229 printf("Page: %lu/%lu\n", (unsigned long)buf_used(&ctx->page), (unsigned long)buf_avail(&ctx->page));
adamc@1134	1230 printf("Heap: %lu/%lu\n", (unsigned long)buf_used(&ctx->heap), (unsigned long)buf_avail(&ctx->heap));
adamc@324	1231 }
adamc@324	1232
adamc@311	1233 int uw_send(uw_context ctx, int sock) {
adamc@666	1234 int n = uw_really_send(sock, ctx->outHeaders.start, ctx->outHeaders.front - ctx->outHeaders.start);
adamc@462	1235
adamc@462	1236 if (n < 0)
adamc@462	1237 return n;
adamc@462	1238
adamc@462	1239 n = uw_really_send(sock, "\r\n", 2);
adamc@462	1240
adamc@462	1241 if (n < 0)
adamc@462	1242 return n;
adamc@462	1243
adamc@666	1244 return uw_really_send(sock, ctx->page.start, ctx->page.front - ctx->page.start);
adamc@462	1245 }
adamc@462	1246
adamc@856	1247 int uw_print(uw_context ctx, int fd) {
adamc@856	1248 int n = uw_really_write(fd, ctx->outHeaders.start, ctx->outHeaders.front - ctx->outHeaders.start);
adamc@856	1249
adamc@856	1250 if (n < 0)
adamc@856	1251 return n;
adamc@856	1252
adamc@856	1253 n = uw_really_write(fd, "\r\n", 2);
adamc@856	1254
adamc@856	1255 if (n < 0)
adamc@856	1256 return n;
adamc@856	1257
adamc@856	1258 return uw_really_write(fd, ctx->page.start, ctx->page.front - ctx->page.start);
adamc@856	1259 }
adamc@856	1260
adamc@860	1261 int uw_output(uw_context ctx, int (output)(void data, char buf, size_t len), void data) {
adamc@860	1262 int n = output(data, ctx->outHeaders.start, ctx->outHeaders.front - ctx->outHeaders.start);
adamc@860	1263
adamc@860	1264 if (n < 0)
adamc@860	1265 return n;
adamc@860	1266
adamc@860	1267 n = output(data, "\r\n", 2);
adamc@860	1268
adamc@860	1269 if (n < 0)
adamc@860	1270 return n;
adamc@860	1271
adamc@860	1272 return output(data, ctx->page.start, ctx->page.front - ctx->page.start);
adamc@860	1273 }
adamc@860	1274
adamc@462	1275 static void uw_check_headers(uw_context ctx, size_t extra) {
adamc@1113	1276 ctx_buf_check(ctx, "headers", &ctx->outHeaders, extra);
adamc@462	1277 }
adamc@462	1278
adamc@462	1279 void uw_write_header(uw_context ctx, uw_Basis_string s) {
adamc@462	1280 int len = strlen(s);
adamc@462	1281
adamc@462	1282 uw_check_headers(ctx, len + 1);
adamc@666	1283 strcpy(ctx->outHeaders.front, s);
adamc@666	1284 ctx->outHeaders.front += len;
adamc@562	1285 }
adamc@562	1286
adamc@1110	1287 void uw_clear_headers(uw_context ctx) {
adamc@1110	1288 buf_reset(&ctx->outHeaders);
adamc@1110	1289 }
adamc@1110	1290
adamc@562	1291 static void uw_check_script(uw_context ctx, size_t extra) {
adamc@1113	1292 ctx_buf_check(ctx, "script", &ctx->script, extra);
adamc@562	1293 }
adamc@562	1294
adamc@562	1295 void uw_write_script(uw_context ctx, uw_Basis_string s) {
adamc@562	1296 int len = strlen(s);
adamc@562	1297
adamc@562	1298 uw_check_script(ctx, len + 1);
adamc@666	1299 strcpy(ctx->script.front, s);
adamc@666	1300 ctx->script.front += len;
adamc@562	1301 }
adamc@562	1302
adamc@645	1303 const char *uw_Basis_get_script(uw_context ctx, uw_unit u) {
adamc@916	1304 return "<sc>";
adamc@565	1305 }
adamc@565	1306
adamc@695	1307 uw_Basis_string uw_Basis_maybe_onload(uw_context ctx, uw_Basis_string s) {
adamc@695	1308 if (s[0] == 0)
adamc@695	1309 return "";
adamc@695	1310 else {
adamc@695	1311 char *r = uw_malloc(ctx, 11 + strlen(s));
adamc@695	1312 sprintf(r, " onload='%s'", s);
adamc@695	1313 return r;
adamc@695	1314 }
adamc@695	1315 }
adamc@695	1316
adamc@1042	1317 uw_Basis_string uw_Basis_maybe_onunload(uw_context ctx, uw_Basis_string s) {
adamc@1042	1318 if (ctx->script_header[0] == 0)
adamc@1042	1319 return "";
adamc@1042	1320 else {
adamc@1042	1321 char *r = uw_malloc(ctx, 22 + strlen(s));
adamc@1042	1322 sprintf(r, " onunload='unload();%s'", s);
adamc@1042	1323 return r;
adamc@1042	1324 }
adamc@1042	1325 }
adamc@1042	1326
adamc@694	1327 const char *uw_Basis_get_settings(uw_context ctx, uw_unit u) {
adamc@736	1328 if (ctx->client == NULL) {
adamc@736	1329 if (ctx->needs_sig) {
adamc@1094	1330 char *sig = ctx->app->cookie_sig(ctx);
adamc@736	1331 char *r = uw_malloc(ctx, strlen(sig) + 8);
adamc@736	1332 sprintf(r, "sig=\"%s\";", sig);
adamc@736	1333 return r;
adamc@736	1334 }
adamc@736	1335 else
adamc@736	1336 return "";
adamc@736	1337 } else {
adamc@1094	1338 char *sig = ctx->needs_sig ? ctx->app->cookie_sig(ctx) : "";
adamc@1094	1339 char r = uw_malloc(ctx, 59 + 3 INTS_MAX + strlen(ctx->app->url_prefix)
adamc@736	1340 + (ctx->needs_sig ? strlen(sig) + 7 : 0));
adamc@736	1341 sprintf(r, "client_id=%u;client_pass=%d;url_prefix=\"%s\";timeout=%d;%s%s%slistener();",
adamc@682	1342 ctx->client->id,
adamc@682	1343 ctx->client->pass,
adamc@1094	1344 ctx->app->url_prefix,
adamc@1094	1345 ctx->app->timeout,
adamc@736	1346 ctx->needs_sig ? "sig=\"" : "",
adamc@736	1347 sig,
adamc@736	1348 ctx->needs_sig ? "\";" : "");
adamc@679	1349 return r;
adamc@668	1350 }
adamc@667	1351 }
adamc@667	1352
adamc@574	1353 uw_Basis_string uw_Basis_jsifyString(uw_context ctx, uw_Basis_string s) {
adamc@574	1354 char r, s2;
adamc@574	1355
adamc@574	1356 uw_check_heap(ctx, strlen(s) * 4 + 2);
adamc@574	1357
adamc@666	1358 r = s2 = ctx->heap.front;
adamc@574	1359 *s2++ = '"';
adamc@574	1360
adamc@574	1361 for (; *s; s++) {
adam@1286	1362 unsigned char c = *s;
adamc@574	1363
adamc@574	1364 switch (c) {
adamc@574	1365 case '"':
adamc@574	1366 strcpy(s2, "\\\"");
adamc@574	1367 s2 += 2;
adamc@574	1368 break;
adamc@1027	1369 case '\'':
adamc@1027	1370 strcpy(s2, "\\047");
adamc@1027	1371 s2 += 4;
adamc@1027	1372 break;
adamc@574	1373 case '\\':
adamc@574	1374 strcpy(s2, "\\\\");
adamc@574	1375 s2 += 2;
adamc@574	1376 break;
adamc@574	1377 default:
adam@1286	1378 if (isprint((int)c) \|\| c >= 128)
adamc@574	1379 *s2++ = c;
adamc@574	1380 else {
adamc@574	1381 sprintf(s2, "\\%3o", c);
adamc@574	1382 s2 += 4;
adamc@574	1383 }
adamc@574	1384 }
adamc@574	1385 }
adamc@574	1386
adamc@574	1387 strcpy(s2, "\"");
adamc@910	1388 ctx->heap.front = s2 + 2;
adamc@574	1389 return r;
adamc@574	1390 }
adamc@574	1391
adam@1286	1392 uw_Basis_string uw_Basis_jsifyChar(uw_context ctx, uw_Basis_char c1) {
adam@1286	1393 unsigned char c = c1;
adamc@1025	1394 char r, s2;
adamc@1025	1395
adamc@1025	1396 uw_check_heap(ctx, 6);
adamc@1025	1397
adamc@1025	1398 r = s2 = ctx->heap.front;
adamc@1025	1399 *s2++ = '"';
adamc@1025	1400
adamc@1025	1401 switch (c) {
adamc@1025	1402 case '"':
adamc@1025	1403 strcpy(s2, "\\\"");
adamc@1025	1404 s2 += 2;
adamc@1025	1405 break;
adamc@1027	1406 case '\'':
adamc@1027	1407 strcpy(s2, "\\047");
adamc@1027	1408 s2 += 4;
adamc@1027	1409 break;
adamc@1025	1410 case '\\':
adamc@1025	1411 strcpy(s2, "\\\\");
adamc@1025	1412 s2 += 2;
adamc@1025	1413 break;
adamc@1025	1414 default:
adam@1286	1415 if (isprint((int)c) \|\| c >= 128)
adamc@1025	1416 *s2++ = c;
adamc@1025	1417 else {
adam@1286	1418 sprintf(s2, "\\%3o", (unsigned char)c);
adamc@1025	1419 s2 += 4;
adamc@1025	1420 }
adamc@1025	1421 }
adamc@1025	1422
adamc@1025	1423 strcpy(s2, "\"");
adamc@1025	1424 ctx->heap.front = s2 + 2;
adamc@1025	1425 return r;
adamc@1025	1426 }
adamc@1025	1427
adamc@574	1428 uw_Basis_string uw_Basis_jsifyString_ws(uw_context ctx, uw_Basis_string s) {
adamc@574	1429 char r, s2;
adamc@574	1430
adamc@574	1431 uw_check_script(ctx, strlen(s) * 4 + 2);
adamc@574	1432
adamc@666	1433 r = s2 = ctx->script.front;
adamc@574	1434 *s2++ = '"';
adamc@574	1435
adamc@574	1436 for (; *s; s++) {
adam@1286	1437 unsigned char c = *s;
adamc@574	1438
adamc@574	1439 switch (c) {
adamc@577	1440 case '\'':
adamc@1027	1441 strcpy(s2, "\\");
adamc@574	1442 s2 += 2;
adamc@574	1443 break;
adamc@574	1444 case '\\':
adamc@574	1445 strcpy(s2, "\\\\");
adamc@574	1446 s2 += 2;
adamc@574	1447 break;
adamc@574	1448 default:
adam@1286	1449 if (isprint((int)c) \|\| c >= 128)
adamc@574	1450 *s2++ = c;
adamc@574	1451 else {
adamc@574	1452 sprintf(s2, "\\%3o", c);
adamc@574	1453 s2 += 4;
adamc@574	1454 }
adamc@574	1455 }
adamc@574	1456 }
adamc@574	1457
adamc@574	1458 strcpy(s2, "\"");
adamc@666	1459 ctx->script.front = s2 + 1;
adamc@574	1460 return r;
adamc@574	1461 }
adamc@574	1462
adamc@682	1463 char *uw_Basis_jsifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	1464 if (ctx->client == NULL \|\| chn.cli != ctx->client->id)
adamc@682	1465 return "null";
adamc@682	1466 else {
adamc@682	1467 int len;
adamc@682	1468 char *r;
adamc@682	1469
adamc@682	1470 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	1471 r = ctx->heap.front;
adamc@682	1472 sprintf(r, "%u%n", chn.chn, &len);
adamc@682	1473 ctx->heap.front += len+1;
adamc@682	1474 return r;
adamc@682	1475 }
adamc@682	1476 }
adamc@682	1477
adamc@577	1478 uw_Basis_int uw_Basis_new_client_source(uw_context ctx, uw_Basis_string s) {
adamc@577	1479 int len;
adamc@577	1480 size_t s_len = strlen(s);
adamc@562	1481
adamc@970	1482 uw_check_script(ctx, 18 + INTS_MAX + s_len);
adamc@970	1483 sprintf(ctx->script.front, "var s%d=sc(exec(%n", ctx->source_count, &len);
adamc@666	1484 ctx->script.front += len;
adamc@666	1485 strcpy(ctx->script.front, s);
adamc@666	1486 ctx->script.front += s_len;
adamc@970	1487 strcpy(ctx->script.front, "));");
adamc@972	1488 ctx->script.front += 3;
adamc@562	1489
adamc@565	1490 return ctx->source_count++;
adamc@117	1491 }
adamc@117	1492
adamc@577	1493 uw_unit uw_Basis_set_client_source(uw_context ctx, uw_Basis_int n, uw_Basis_string s) {
adamc@577	1494 int len;
adamc@577	1495 size_t s_len = strlen(s);
adamc@577	1496
adamc@970	1497 uw_check_script(ctx, 12 + INTS_MAX + s_len);
adamc@970	1498 sprintf(ctx->script.front, "sv(s%d,exec(%n", (int)n, &len);
adamc@666	1499 ctx->script.front += len;
adamc@666	1500 strcpy(ctx->script.front, s);
adamc@666	1501 ctx->script.front += s_len;
adamc@970	1502 strcpy(ctx->script.front, "));");
adamc@972	1503 ctx->script.front += 3;
adamc@577	1504
adamc@577	1505 return uw_unit_v;
adamc@577	1506 }
adamc@577	1507
adamc@311	1508 static void uw_check(uw_context ctx, size_t extra) {
adamc@1113	1509 ctx_buf_check(ctx, "page", &ctx->page, extra);
adamc@117	1510 }
adamc@117	1511
adamc@311	1512 static void uw_writec_unsafe(uw_context ctx, char c) {
adamc@666	1513 *(ctx->page.front)++ = c;
adamc@117	1514 }
adamc@117	1515
adamc@311	1516 void uw_writec(uw_context ctx, char c) {
adamc@311	1517 uw_check(ctx, 1);
adamc@311	1518 uw_writec_unsafe(ctx, c);
adamc@117	1519 }
adamc@117	1520
adamc@311	1521 static void uw_write_unsafe(uw_context ctx, const char* s) {
adamc@117	1522 int len = strlen(s);
adamc@666	1523 memcpy(ctx->page.front, s, len);
adamc@666	1524 ctx->page.front += len;
adamc@117	1525 }
adamc@117	1526
adamc@311	1527 void uw_write(uw_context ctx, const char* s) {
adamc@311	1528 uw_check(ctx, strlen(s) + 1);
adamc@311	1529 uw_write_unsafe(ctx, s);
adamc@666	1530 *ctx->page.front = 0;
adamc@102	1531 }
adamc@106	1532
adamc@311	1533 char *uw_Basis_attrifyInt(uw_context ctx, uw_Basis_int n) {
adamc@136	1534 char *result;
adamc@136	1535 int len;
adamc@311	1536 uw_check_heap(ctx, INTS_MAX);
adamc@666	1537 result = ctx->heap.front;
adamc@276	1538 sprintf(result, "%lld%n", n, &len);
adamc@666	1539 ctx->heap.front += len+1;
adamc@136	1540 return result;
adamc@106	1541 }
adamc@106	1542
adamc@311	1543 char *uw_Basis_attrifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@136	1544 char *result;
adamc@136	1545 int len;
adamc@311	1546 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	1547 result = ctx->heap.front;
adamc@136	1548 sprintf(result, "%g%n", n, &len);
adamc@666	1549 ctx->heap.front += len+1;
adamc@136	1550 return result;
adamc@106	1551 }
adamc@106	1552
adamc@311	1553 char *uw_Basis_attrifyString(uw_context ctx, uw_Basis_string s) {
adamc@136	1554 int len = strlen(s);
adamc@136	1555 char result, p;
adamc@311	1556 uw_check_heap(ctx, len * 6 + 1);
adamc@136	1557
adamc@666	1558 result = p = ctx->heap.front;
adamc@136	1559
adamc@136	1560 for (; *s; s++) {
adamc@1054	1561 unsigned char c = *s;
adamc@136	1562
adamc@136	1563 if (c == '"') {
adamc@136	1564 strcpy(p, """);
adamc@136	1565 p += 6;
adamc@136	1566 } else if (c == '&') {
adamc@136	1567 strcpy(p, "&");
adamc@136	1568 p += 5;
adamc@136	1569 }
adamc@1059	1570 else
adamc@136	1571 *p++ = c;
adamc@136	1572 }
adamc@136	1573
adamc@137	1574 *p++ = 0;
adamc@666	1575 ctx->heap.front = p;
adamc@136	1576 return result;
adamc@106	1577 }
adamc@106	1578
adamc@1011	1579 char *uw_Basis_attrifyChar(uw_context ctx, uw_Basis_char c) {
adamc@1011	1580 char result, p;
adamc@1011	1581 uw_check_heap(ctx, 7);
adamc@1011	1582
adamc@1011	1583 result = p = ctx->heap.front;
adamc@1011	1584
adamc@1011	1585 if (c == '"') {
adamc@1011	1586 strcpy(p, """);
adamc@1011	1587 p += 6;
adamc@1011	1588 } else if (c == '&') {
adamc@1011	1589 strcpy(p, "&");
adamc@1011	1590 p += 5;
adamc@1011	1591 }
adamc@1059	1592 else
adamc@1011	1593 *p++ = c;
adamc@1011	1594
adamc@1011	1595 *p++ = 0;
adamc@1011	1596 ctx->heap.front = p;
adamc@1011	1597 return result;
adamc@1011	1598 }
adamc@1011	1599
adamc@721	1600 char *uw_Basis_attrifyCss_class(uw_context ctx, uw_Basis_css_class s) {
adamc@721	1601 return s;
adamc@721	1602 }
adamc@721	1603
adamc@311	1604 static void uw_Basis_attrifyInt_w_unsafe(uw_context ctx, uw_Basis_int n) {
adamc@117	1605 int len;
adamc@117	1606
adamc@666	1607 sprintf(ctx->page.front, "%lld%n", n, &len);
adamc@666	1608 ctx->page.front += len;
adamc@106	1609 }
adamc@106	1610
adamc@428	1611 uw_unit uw_Basis_attrifyInt_w(uw_context ctx, uw_Basis_int n) {
adamc@311	1612 uw_check(ctx, INTS_MAX);
adamc@311	1613 uw_Basis_attrifyInt_w_unsafe(ctx, n);
adamc@428	1614
adamc@428	1615 return uw_unit_v;
adamc@106	1616 }
adamc@106	1617
adamc@428	1618 uw_unit uw_Basis_attrifyFloat_w(uw_context ctx, uw_Basis_float n) {
adamc@117	1619 int len;
adamc@117	1620
adamc@311	1621 uw_check(ctx, FLOATS_MAX);
adamc@666	1622 sprintf(ctx->page.front, "%g%n", n, &len);
adamc@666	1623 ctx->page.front += len;
adamc@428	1624
adamc@428	1625 return uw_unit_v;
adamc@117	1626 }
adamc@117	1627
adamc@428	1628 uw_unit uw_Basis_attrifyString_w(uw_context ctx, uw_Basis_string s) {
adamc@311	1629 uw_check(ctx, strlen(s) * 6);
adamc@117	1630
adamc@106	1631 for (; *s; s++) {
adamc@1054	1632 unsigned char c = *s;
adamc@106	1633
adamc@106	1634 if (c == '"')
adamc@311	1635 uw_write_unsafe(ctx, """);
adamc@136	1636 else if (c == '&')
adamc@311	1637 uw_write_unsafe(ctx, "&");
adamc@1059	1638 else
adamc@311	1639 uw_writec_unsafe(ctx, c);
adamc@106	1640 }
adamc@428	1641
adamc@428	1642 return uw_unit_v;
adamc@106	1643 }
adamc@120	1644
adamc@1011	1645 uw_unit uw_Basis_attrifyChar_w(uw_context ctx, uw_Basis_char c) {
adamc@1011	1646 uw_check(ctx, 6);
adamc@1011	1647
adamc@1011	1648 if (c == '"')
adamc@1011	1649 uw_write_unsafe(ctx, """);
adamc@1011	1650 else if (c == '&')
adamc@1011	1651 uw_write_unsafe(ctx, "&");
adamc@1059	1652 else
adamc@1011	1653 uw_writec_unsafe(ctx, c);
adamc@1011	1654
adamc@1011	1655 return uw_unit_v;
adamc@1011	1656 }
adamc@1011	1657
adamc@120	1658
adamc@311	1659 char *uw_Basis_urlifyInt(uw_context ctx, uw_Basis_int n) {
adamc@137	1660 int len;
adamc@137	1661 char *r;
adamc@137	1662
adamc@311	1663 uw_check_heap(ctx, INTS_MAX);
adamc@666	1664 r = ctx->heap.front;
adamc@276	1665 sprintf(r, "%lld%n", n, &len);
adamc@666	1666 ctx->heap.front += len+1;
adamc@137	1667 return r;
adamc@120	1668 }
adamc@120	1669
adamc@682	1670 char *uw_Basis_urlifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	1671 if (ctx->client == NULL \|\| chn.cli != ctx->client->id)
adamc@682	1672 return "";
adamc@682	1673 else {
adamc@682	1674 int len;
adamc@682	1675 char *r;
adamc@679	1676
adamc@682	1677 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	1678 r = ctx->heap.front;
adamc@682	1679 sprintf(r, "%u%n", chn.chn, &len);
adamc@682	1680 ctx->heap.front += len+1;
adamc@682	1681 return r;
adamc@682	1682 }
adamc@679	1683 }
adamc@679	1684
adamc@311	1685 char *uw_Basis_urlifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@137	1686 int len;
adamc@137	1687 char *r;
adamc@137	1688
adamc@311	1689 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	1690 r = ctx->heap.front;
adamc@137	1691 sprintf(r, "%g%n", n, &len);
adamc@666	1692 ctx->heap.front += len+1;
adamc@137	1693 return r;
adamc@120	1694 }
adamc@120	1695
adamc@311	1696 char *uw_Basis_urlifyString(uw_context ctx, uw_Basis_string s) {
adamc@137	1697 char r, p;
adamc@137	1698
adamc@925	1699 if (s[0] == '\0')
adamc@925	1700 return "_";
adamc@925	1701
adamc@925	1702 uw_check_heap(ctx, strlen(s) * 3 + 1 + !!(s[0] == '_'));
adamc@925	1703
adamc@925	1704 r = p = ctx->heap.front;
adamc@925	1705 if (s[0] == '_')
adamc@925	1706 *p++ = '_';
adamc@925	1707
adamc@925	1708 for (; *s; s++) {
adamc@1087	1709 unsigned char c = *s;
adamc@137	1710
adamc@137	1711 if (c == ' ')
adamc@137	1712 *p++ = '+';
adamc@137	1713 else if (isalnum(c))
adamc@137	1714 *p++ = c;
adamc@137	1715 else {
adamc@1259	1716 sprintf(p, ".%02X", c);
adamc@137	1717 p += 3;
adamc@137	1718 }
adamc@137	1719 }
adamc@137	1720
adamc@137	1721 *p++ = 0;
adamc@666	1722 ctx->heap.front = p;
adamc@137	1723 return r;
adamc@120	1724 }
adamc@120	1725
adamc@311	1726 char *uw_Basis_urlifyBool(uw_context ctx, uw_Basis_bool b) {
adamc@311	1727 if (b == uw_Basis_False)
adamc@186	1728 return "0";
adamc@186	1729 else
adamc@186	1730 return "1";
adamc@186	1731 }
adamc@186	1732
adamc@311	1733 static void uw_Basis_urlifyInt_w_unsafe(uw_context ctx, uw_Basis_int n) {
adamc@120	1734 int len;
adamc@120	1735
adamc@666	1736 sprintf(ctx->page.front, "%lld%n", n, &len);
adamc@666	1737 ctx->page.front += len;
adamc@120	1738 }
adamc@120	1739
adamc@428	1740 uw_unit uw_Basis_urlifyInt_w(uw_context ctx, uw_Basis_int n) {
adamc@311	1741 uw_check(ctx, INTS_MAX);
adamc@311	1742 uw_Basis_urlifyInt_w_unsafe(ctx, n);
adamc@428	1743
adamc@428	1744 return uw_unit_v;
adamc@120	1745 }
adamc@120	1746
adamc@682	1747 uw_unit uw_Basis_urlifyChannel_w(uw_context ctx, uw_Basis_channel chn) {
adamc@682	1748 if (ctx->client != NULL && chn.cli == ctx->client->id) {
adamc@682	1749 int len;
adamc@682	1750
adamc@682	1751 uw_check(ctx, INTS_MAX + 1);
adamc@682	1752 sprintf(ctx->page.front, "%u%n", chn.chn, &len);
adamc@682	1753 ctx->page.front += len;
adamc@682	1754 }
adamc@682	1755
adamc@679	1756 return uw_unit_v;
adamc@679	1757 }
adamc@679	1758
adamc@428	1759 uw_unit uw_Basis_urlifyFloat_w(uw_context ctx, uw_Basis_float n) {
adamc@120	1760 int len;
adamc@120	1761
adamc@311	1762 uw_check(ctx, FLOATS_MAX);
adamc@666	1763 sprintf(ctx->page.front, "%g%n", n, &len);
adamc@666	1764 ctx->page.front += len;
adamc@428	1765
adamc@428	1766 return uw_unit_v;
adamc@120	1767 }
adamc@120	1768
adamc@488	1769 uw_Basis_string uw_Basis_urlifyTime(uw_context ctx, uw_Basis_time t) {
adamc@488	1770 return uw_Basis_urlifyInt(ctx, t);
adamc@488	1771 }
adamc@488	1772
adamc@428	1773 uw_unit uw_Basis_urlifyString_w(uw_context ctx, uw_Basis_string s) {
adamc@925	1774 if (s[0] == '\0') {
adamc@925	1775 uw_check(ctx, 1);
adamc@925	1776 uw_writec_unsafe(ctx, '_');
adamc@925	1777 return uw_unit_v;
adamc@925	1778 }
adamc@925	1779
adamc@925	1780 uw_check(ctx, strlen(s) * 3 + !!(s[0] == '_'));
adamc@925	1781
adamc@925	1782 if (s[0] == '_')
adamc@925	1783 uw_writec_unsafe(ctx, '_');
adamc@120	1784
adamc@120	1785 for (; *s; s++) {
adamc@1087	1786 unsigned char c = *s;
adamc@120	1787
adamc@120	1788 if (c == ' ')
adamc@311	1789 uw_writec_unsafe(ctx, '+');
adamc@120	1790 else if (isalnum(c))
adamc@311	1791 uw_writec_unsafe(ctx, c);
adamc@120	1792 else {
adamc@1259	1793 sprintf(ctx->page.front, ".%02X", c);
adamc@666	1794 ctx->page.front += 3;
adamc@120	1795 }
adamc@120	1796 }
adamc@428	1797
adamc@428	1798 return uw_unit_v;
adamc@120	1799 }
adamc@120	1800
adamc@428	1801 uw_unit uw_Basis_urlifyBool_w(uw_context ctx, uw_Basis_bool b) {
adamc@311	1802 if (b == uw_Basis_False)
adamc@311	1803 uw_writec(ctx, '0');
adamc@186	1804 else
adamc@311	1805 uw_writec(ctx, '1');
adamc@428	1806
adamc@428	1807 return uw_unit_v;
adamc@186	1808 }
adamc@186	1809
adamc@120	1810
adamc@311	1811 static char uw_unurlify_advance(char s) {
adamc@144	1812 char *new_s = strchr(s, '/');
adamc@120	1813
adamc@120	1814 if (new_s)
adamc@120	1815 *new_s++ = 0;
adamc@120	1816 else
adamc@144	1817 new_s = strchr(s, 0);
adamc@144	1818
adamc@144	1819 return new_s;
adamc@144	1820 }
adamc@144	1821
adamc@311	1822 uw_Basis_int uw_Basis_unurlifyInt(uw_context ctx, char **s) {
adamc@311	1823 char new_s = uw_unurlify_advance(s);
adamc@311	1824 uw_Basis_int r;
adamc@120	1825
adamc@276	1826 r = atoll(*s);
adamc@120	1827 *s = new_s;
adamc@120	1828 return r;
adamc@120	1829 }
adamc@120	1830
adamc@311	1831 uw_Basis_float uw_Basis_unurlifyFloat(uw_context ctx, char **s) {
adamc@311	1832 char new_s = uw_unurlify_advance(s);
adamc@311	1833 uw_Basis_float r;
adamc@120	1834
adamc@120	1835 r = atof(*s);
adamc@120	1836 *s = new_s;
adamc@120	1837 return r;
adamc@120	1838 }
adamc@120	1839
adamc@488	1840 uw_Basis_time uw_Basis_unurlifyTime(uw_context ctx, char **s) {
adamc@488	1841 return uw_Basis_unurlifyInt(ctx, s);
adamc@488	1842 }
adamc@488	1843
adamc@1023	1844 static uw_Basis_string uw_unurlifyString_to(int fromClient, uw_context ctx, char r, char s) {
adamc@927	1845 char s1, s2 = s;
adamc@144	1846 int n;
adamc@136	1847
adamc@1023	1848 if (!fromClient) {
adamc@1023	1849 if (*s2 == '_')
adamc@1023	1850 ++s2;
adamc@1259	1851 else if ((s2[0] == '%' \|\| s2[0] == '.') && s2[1] == '5' && (s2[2] == 'f' \|\| s2[2] == 'F'))
adamc@1023	1852 s2 += 3;
adamc@1023	1853 }
adamc@925	1854
adamc@927	1855 for (s1 = r; *s2; ++s1, ++s2) {
adamc@1087	1856 unsigned char c = *s2;
adamc@136	1857
adamc@136	1858 switch (c) {
adamc@136	1859 case '+':
adamc@136	1860 *s1 = ' ';
adamc@136	1861 break;
adamc@136	1862 case '%':
adamc@169	1863 if (s2[1] == 0)
adamc@311	1864 uw_error(ctx, FATAL, "Missing first character of escaped URL byte");
adamc@169	1865 if (s2[2] == 0)
adamc@311	1866 uw_error(ctx, FATAL, "Missing second character of escaped URL byte");
adamc@169	1867 if (sscanf(s2+1, "%02X", &n) != 1)
adamc@311	1868 uw_error(ctx, FATAL, "Invalid escaped URL byte starting at: %s", s2);
adamc@136	1869 *s1 = n;
adamc@136	1870 s2 += 2;
adamc@136	1871 break;
adamc@1259	1872 case '.':
adamc@1259	1873 if (!fromClient) {
adamc@1259	1874 if (s2[1] == 0)
adamc@1259	1875 uw_error(ctx, FATAL, "Missing first character of escaped URL byte");
adamc@1259	1876 if (s2[2] == 0)
adamc@1259	1877 uw_error(ctx, FATAL, "Missing second character of escaped URL byte");
adamc@1259	1878 if (sscanf(s2+1, "%02X", &n) != 1)
adamc@1259	1879 uw_error(ctx, FATAL, "Invalid escaped URL byte starting at: %s", s2);
adamc@1259	1880 *s1 = n;
adamc@1259	1881 s2 += 2;
adamc@1259	1882 break;
adamc@1259	1883 }
adamc@136	1884 default:
adamc@136	1885 *s1 = c;
adamc@136	1886 }
adamc@136	1887 }
adamc@136	1888 *s1++ = 0;
adamc@144	1889 return s1;
adamc@144	1890 }
adamc@144	1891
adamc@311	1892 uw_Basis_bool uw_Basis_unurlifyBool(uw_context ctx, char **s) {
adamc@311	1893 char new_s = uw_unurlify_advance(s);
adamc@311	1894 uw_Basis_bool r;
adamc@186	1895
adamc@186	1896 if (s[0] == 0 \|\| !strcmp(s, "0") \|\| !strcmp(*s, "off"))
adamc@311	1897 r = uw_Basis_False;
adamc@186	1898 else
adamc@311	1899 r = uw_Basis_True;
adamc@186	1900
adamc@186	1901 *s = new_s;
adamc@186	1902 return r;
adamc@186	1903 }
adamc@186	1904
adamc@311	1905 uw_Basis_string uw_Basis_unurlifyString(uw_context ctx, char **s) {
adamc@311	1906 char new_s = uw_unurlify_advance(s);
adamc@1134	1907 char *r;
adamc@1134	1908 int len;
adamc@144	1909
adamc@200	1910 len = strlen(*s);
adamc@311	1911 uw_check_heap(ctx, len + 1);
adamc@144	1912
adamc@666	1913 r = ctx->heap.front;
adamc@1023	1914 ctx->heap.front = uw_unurlifyString_to(0, ctx, ctx->heap.front, *s);
adamc@1023	1915 *s = new_s;
adamc@1023	1916 return r;
adamc@1023	1917 }
adamc@1023	1918
adamc@1109	1919 uw_Basis_unit uw_Basis_unurlifyUnit(uw_context ctx, char **s) {
adamc@1109	1920 s = uw_unurlify_advance(s);
adamc@1109	1921 return uw_unit_v;
adamc@1109	1922 }
adamc@1109	1923
adamc@1023	1924 uw_Basis_string uw_Basis_unurlifyString_fromClient(uw_context ctx, char **s) {
adamc@1023	1925 char new_s = uw_unurlify_advance(s);
adamc@1134	1926 char *r;
adamc@1134	1927 int len;
adamc@1023	1928
adamc@1023	1929 len = strlen(*s);
adamc@1023	1930 uw_check_heap(ctx, len + 1);
adamc@1023	1931
adamc@1023	1932 r = ctx->heap.front;
adamc@1023	1933 ctx->heap.front = uw_unurlifyString_to(1, ctx, ctx->heap.front, *s);
adamc@136	1934 *s = new_s;
adamc@136	1935 return r;
adamc@120	1936 }
adamc@135	1937
adamc@135	1938
adamc@311	1939 char *uw_Basis_htmlifyInt(uw_context ctx, uw_Basis_int n) {
adamc@286	1940 int len;
adamc@286	1941 char *r;
adamc@286	1942
adamc@311	1943 uw_check_heap(ctx, INTS_MAX);
adamc@666	1944 r = ctx->heap.front;
adamc@286	1945 sprintf(r, "%lld%n", n, &len);
adamc@666	1946 ctx->heap.front += len+1;
adamc@286	1947 return r;
adamc@286	1948 }
adamc@286	1949
adamc@428	1950 uw_unit uw_Basis_htmlifyInt_w(uw_context ctx, uw_Basis_int n) {
adamc@286	1951 int len;
adamc@286	1952
adamc@311	1953 uw_check(ctx, INTS_MAX);
adamc@666	1954 sprintf(ctx->page.front, "%lld%n", n, &len);
adamc@666	1955 ctx->page.front += len;
adamc@428	1956
adamc@428	1957 return uw_unit_v;
adamc@286	1958 }
adamc@286	1959
adamc@311	1960 char *uw_Basis_htmlifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@286	1961 int len;
adamc@286	1962 char *r;
adamc@286	1963
adamc@311	1964 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	1965 r = ctx->heap.front;
adamc@286	1966 sprintf(r, "%g%n", n, &len);
adamc@666	1967 ctx->heap.front += len+1;
adamc@286	1968 return r;
adamc@286	1969 }
adamc@286	1970
adamc@428	1971 uw_unit uw_Basis_htmlifyFloat_w(uw_context ctx, uw_Basis_float n) {
adamc@286	1972 int len;
adamc@286	1973
adamc@311	1974 uw_check(ctx, FLOATS_MAX);
adamc@666	1975 sprintf(ctx->page.front, "%g%n", n, &len);
adamc@666	1976 ctx->page.front += len;
adamc@428	1977
adamc@428	1978 return uw_unit_v;
adamc@286	1979 }
adamc@286	1980
adamc@311	1981 char *uw_Basis_htmlifyString(uw_context ctx, uw_Basis_string s) {
adamc@137	1982 char r, s2;
adamc@137	1983
adamc@311	1984 uw_check_heap(ctx, strlen(s) * 5 + 1);
adamc@137	1985
adamc@666	1986 for (r = s2 = ctx->heap.front; *s; s++) {
adamc@1054	1987 unsigned char c = *s;
adamc@137	1988
adamc@137	1989 switch (c) {
adamc@137	1990 case '<':
adamc@137	1991 strcpy(s2, "<");
adamc@137	1992 s2 += 4;
adamc@137	1993 break;
adamc@137	1994 case '&':
adamc@137	1995 strcpy(s2, "&");
adamc@137	1996 s2 += 5;
adamc@137	1997 break;
adamc@137	1998 default:
adamc@1059	1999 *s2++ = c;
adamc@137	2000 }
adamc@137	2001 }
adamc@137	2002
adamc@137	2003 *s2++ = 0;
adamc@666	2004 ctx->heap.front = s2;
adamc@137	2005 return r;
adamc@135	2006 }
adamc@135	2007
adamc@428	2008 uw_unit uw_Basis_htmlifyString_w(uw_context ctx, uw_Basis_string s) {
adamc@321	2009 uw_check(ctx, strlen(s) * 6);
adamc@135	2010
adamc@135	2011 for (; *s; s++) {
adamc@1054	2012 unsigned char c = *s;
adamc@135	2013
adamc@135	2014 switch (c) {
adamc@135	2015 case '<':
adamc@311	2016 uw_write_unsafe(ctx, "<");
adamc@135	2017 break;
adamc@135	2018 case '&':
adamc@311	2019 uw_write_unsafe(ctx, "&");
adamc@135	2020 break;
adamc@135	2021 default:
adamc@1059	2022 uw_writec_unsafe(ctx, c);
adamc@135	2023 }
adamc@135	2024 }
adamc@428	2025
adamc@428	2026 return uw_unit_v;
adamc@135	2027 }
adamc@180	2028
adamc@311	2029 uw_Basis_string uw_Basis_htmlifyBool(uw_context ctx, uw_Basis_bool b) {
adamc@311	2030 if (b == uw_Basis_False)
adamc@286	2031 return "False";
adamc@286	2032 else
adamc@286	2033 return "True";
adamc@286	2034 }
adamc@286	2035
adamc@428	2036 uw_unit uw_Basis_htmlifyBool_w(uw_context ctx, uw_Basis_bool b) {
adamc@311	2037 if (b == uw_Basis_False) {
adamc@311	2038 uw_check(ctx, 6);
adamc@666	2039 strcpy(ctx->page.front, "False");
adamc@666	2040 ctx->page.front += 5;
adamc@286	2041 } else {
adamc@311	2042 uw_check(ctx, 5);
adamc@666	2043 strcpy(ctx->page.front, "True");
adamc@666	2044 ctx->page.front += 4;
adamc@286	2045 }
adamc@428	2046
adamc@428	2047 return uw_unit_v;
adamc@286	2048 }
adamc@286	2049
adamc@436	2050 #define TIME_FMT "%x %X"
adamc@438	2051 #define TIME_FMT_PG "%Y-%m-%d %T"
adamc@436	2052
adamc@436	2053 uw_Basis_string uw_Basis_htmlifyTime(uw_context ctx, uw_Basis_time t) {
adamc@436	2054 size_t len;
adamc@436	2055 char *r;
adamc@436	2056 struct tm stm;
adamc@436	2057
adamc@436	2058 if (localtime_r(&t, &stm)) {
adamc@436	2059 uw_check_heap(ctx, TIMES_MAX);
adamc@666	2060 r = ctx->heap.front;
adamc@436	2061 len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
adamc@666	2062 ctx->heap.front += len+1;
adamc@436	2063 return r;
adamc@436	2064 } else
adamc@436	2065 return "<i>Invalid time</i>";
adamc@436	2066 }
adamc@436	2067
adamc@436	2068 uw_unit uw_Basis_htmlifyTime_w(uw_context ctx, uw_Basis_time t) {
adamc@436	2069 size_t len;
adamc@436	2070 char *r;
adamc@436	2071 struct tm stm;
adamc@436	2072
adamc@436	2073 if (localtime_r(&t, &stm)) {
adamc@436	2074 uw_check(ctx, TIMES_MAX);
adamc@666	2075 r = ctx->page.front;
adamc@436	2076 len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
adamc@666	2077 ctx->page.front += len;
adamc@436	2078 } else {
adamc@436	2079 uw_check(ctx, 20);
adamc@666	2080 strcpy(ctx->page.front, "<i>Invalid time</i>");
adamc@666	2081 ctx->page.front += 19;
adamc@436	2082 }
adamc@436	2083
adamc@436	2084 return uw_unit_v;
adamc@436	2085 }
adamc@436	2086
adamc@821	2087 uw_Basis_char uw_Basis_strsub(uw_context ctx, uw_Basis_string s, uw_Basis_int n) {
adamc@821	2088 if (n >= 0 && n < strlen(s))
adamc@821	2089 return s[n];
adamc@821	2090 else
adamc@821	2091 uw_error(ctx, FATAL, "Out-of-bounds strsub");
adamc@821	2092 }
adamc@821	2093
adamc@821	2094 uw_Basis_string uw_Basis_strsuffix(uw_context ctx, uw_Basis_string s, uw_Basis_int n) {
adamc@821	2095 if (n >= 0 && n < strlen(s))
adamc@821	2096 return &s[n];
adamc@821	2097 else
adamc@821	2098 uw_error(ctx, FATAL, "Out-of-bounds strsuffix");
adamc@821	2099 }
adamc@821	2100
adamc@828	2101 uw_Basis_int uw_Basis_strlen(uw_context ctx, uw_Basis_string s) {
adamc@828	2102 return strlen(s);
adamc@828	2103 }
adamc@828	2104
adamc@829	2105 uw_Basis_string uw_Basis_strchr(uw_context ctx, uw_Basis_string s, uw_Basis_char ch) {
adamc@829	2106 return strchr(s, ch);
adamc@829	2107 }
adamc@829	2108
adamc@831	2109 uw_Basis_int uw_Basis_strcspn(uw_context ctx, uw_Basis_string s, uw_Basis_string chs) {
adamc@831	2110 return strcspn(s, chs);
adamc@831	2111 }
adamc@831	2112
adamc@829	2113 uw_Basis_int *uw_Basis_strindex(uw_context ctx, uw_Basis_string s, uw_Basis_char ch) {
adamc@829	2114 uw_Basis_string r = strchr(s, ch);
adamc@829	2115 if (r == NULL)
adamc@829	2116 return NULL;
adamc@829	2117 else {
adamc@829	2118 uw_Basis_int *nr = uw_malloc(ctx, sizeof(uw_Basis_int));
adamc@829	2119 *nr = r - s;
adamc@829	2120 return nr;
adamc@829	2121 }
adamc@829	2122 }
adamc@829	2123
adamc@311	2124 uw_Basis_string uw_Basis_strcat(uw_context ctx, uw_Basis_string s1, uw_Basis_string s2) {
adamc@828	2125 int len = uw_Basis_strlen(ctx, s1) + uw_Basis_strlen(ctx, s2) + 1;
adamc@180	2126 char *s;
adamc@180	2127
adamc@311	2128 uw_check_heap(ctx, len);
adamc@180	2129
adamc@666	2130 s = ctx->heap.front;
adamc@180	2131
adamc@180	2132 strcpy(s, s1);
adamc@180	2133 strcat(s, s2);
adamc@666	2134 ctx->heap.front += len;
adamc@180	2135
adamc@180	2136 return s;
adamc@180	2137 }
adamc@278	2138
adamc@829	2139 uw_Basis_string uw_Basis_substring(uw_context ctx, uw_Basis_string s, uw_Basis_int start, uw_Basis_int len) {
adamc@829	2140 size_t full_len = uw_Basis_strlen(ctx, s);
adamc@829	2141
adamc@829	2142 if (start < 0)
adamc@829	2143 uw_error(ctx, FATAL, "substring: Negative start index");
adamc@829	2144 if (len < 0)
adamc@829	2145 uw_error(ctx, FATAL, "substring: Negative length");
adamc@829	2146 if (start + len > full_len)
adamc@829	2147 uw_error(ctx, FATAL, "substring: Start index plus length is too large");
adamc@829	2148
adamc@829	2149 if (start + len == full_len)
adamc@829	2150 return &s[start];
adamc@829	2151 else {
adamc@829	2152 uw_Basis_string r = uw_malloc(ctx, len+1);
adamc@959	2153 memcpy(r, s+start, len);
adamc@829	2154 r[len] = 0;
adamc@829	2155 return r;
adamc@829	2156 }
adamc@829	2157
adamc@829	2158 }
adamc@829	2159
adamc@1023	2160 uw_Basis_string uw_Basis_str1(uw_context ctx, uw_Basis_char ch) {
adamc@1023	2161 char *r;
adamc@1023	2162
adamc@1023	2163 uw_check_heap(ctx, 2);
adamc@1023	2164 r = ctx->heap.front;
adamc@1023	2165 r[0] = ch;
adamc@1023	2166 r[1] = 0;
adamc@1023	2167
adamc@1023	2168 ctx->heap.front += 2;
adamc@1023	2169
adamc@1023	2170 return r;
adamc@1023	2171 }
adamc@1023	2172
adamc@737	2173 uw_Basis_string uw_strdup(uw_context ctx, uw_Basis_string s1) {
adamc@828	2174 int len = uw_Basis_strlen(ctx, s1) + 1;
adamc@278	2175 char *s;
adamc@278	2176
adamc@311	2177 uw_check_heap(ctx, len);
adamc@278	2178
adamc@666	2179 s = ctx->heap.front;
adamc@278	2180
adamc@278	2181 strcpy(s, s1);
adamc@666	2182 ctx->heap.front += len;
adamc@278	2183
adamc@278	2184 return s;
adamc@278	2185 }
adamc@280	2186
adam@1295	2187 uw_Basis_string uw_dup_and_clear_error_message(uw_context ctx) {
adam@1295	2188 if (ctx->error_message[0]) {
adam@1295	2189 char *s = uw_strdup(ctx, ctx->error_message);
adam@1295	2190 ctx->error_message[0] = 0;
adam@1295	2191 return s;
adam@1295	2192 } else
adam@1295	2193 return NULL;
adam@1295	2194 }
adam@1295	2195
adamc@737	2196 uw_Basis_string uw_maybe_strdup(uw_context ctx, uw_Basis_string s1) {
adamc@493	2197 if (s1)
adamc@737	2198 return uw_strdup(ctx, s1);
adamc@493	2199 else
adamc@493	2200 return NULL;
adamc@493	2201 }
adamc@493	2202
adamc@742	2203 char uw_memdup(uw_context ctx, const char p, size_t len) {
adamc@742	2204 char *r = uw_malloc(ctx, len);
adamc@742	2205 memcpy(r, p, len);
adamc@742	2206 return r;
adamc@742	2207 }
adamc@280	2208
adamc@879	2209 char *uw_sqlfmtInt = "%lld::int8%n";
adamc@879	2210
adamc@311	2211 char *uw_Basis_sqlifyInt(uw_context ctx, uw_Basis_int n) {
adamc@281	2212 int len;
adamc@281	2213 char *r;
adamc@281	2214
adamc@311	2215 uw_check_heap(ctx, INTS_MAX + 6);
adamc@666	2216 r = ctx->heap.front;
adamc@879	2217 sprintf(r, uw_sqlfmtInt, n, &len);
adamc@666	2218 ctx->heap.front += len+1;
adamc@281	2219 return r;
adamc@281	2220 }
adamc@281	2221
adamc@467	2222 char uw_Basis_sqlifyIntN(uw_context ctx, uw_Basis_int n) {
adamc@467	2223 if (n == NULL)
adamc@467	2224 return "NULL";
adamc@467	2225 else
adamc@467	2226 return uw_Basis_sqlifyInt(ctx, *n);
adamc@467	2227 }
adamc@467	2228
adamc@879	2229 char *uw_sqlfmtFloat = "%g::float8%n";
adamc@879	2230
adamc@311	2231 char *uw_Basis_sqlifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@281	2232 int len;
adamc@281	2233 char *r;
adamc@281	2234
adamc@311	2235 uw_check_heap(ctx, FLOATS_MAX + 8);
adamc@666	2236 r = ctx->heap.front;
adamc@879	2237 sprintf(r, uw_sqlfmtFloat, n, &len);
adamc@666	2238 ctx->heap.front += len+1;
adamc@281	2239 return r;
adamc@281	2240 }
adamc@281	2241
adamc@467	2242 char uw_Basis_sqlifyFloatN(uw_context ctx, uw_Basis_float n) {
adamc@467	2243 if (n == NULL)
adamc@467	2244 return "NULL";
adamc@467	2245 else
adamc@467	2246 return uw_Basis_sqlifyFloat(ctx, *n);
adamc@467	2247 }
adamc@467	2248
adamc@879	2249 int uw_Estrings = 1;
adamc@879	2250 char *uw_sqlsuffixString = "::text";
adamc@1011	2251 char *uw_sqlsuffixChar = "::char";
adamc@281	2252
adamc@311	2253 uw_Basis_string uw_Basis_sqlifyString(uw_context ctx, uw_Basis_string s) {
adamc@280	2254 char r, s2;
adamc@280	2255
adamc@879	2256 uw_check_heap(ctx, strlen(s) * 2 + 3 + uw_Estrings + strlen(uw_sqlsuffixString));
adamc@280	2257
adamc@666	2258 r = s2 = ctx->heap.front;
adamc@879	2259 if (uw_Estrings)
adamc@879	2260 *s2++ = 'E';
adamc@280	2261 *s2++ = '\'';
adamc@280	2262
adamc@280	2263 for (; *s; s++) {
adamc@280	2264 char c = *s;
adamc@280	2265
adamc@280	2266 switch (c) {
adamc@280	2267 case '\'':
adamc@885	2268 if (uw_Estrings)
adamc@885	2269 strcpy(s2, "\\'");
adamc@885	2270 else
adamc@885	2271 strcpy(s2, "''");
adamc@280	2272 s2 += 2;
adamc@280	2273 break;
adamc@280	2274 case '\\':
adamc@885	2275 if (uw_Estrings) {
adamc@885	2276 strcpy(s2, "\\\\");
adamc@885	2277 s2 += 2;
adamc@885	2278 } else
adamc@885	2279 *s2++ = '\\';
adamc@280	2280 break;
adamc@280	2281 default:
adamc@1150	2282 if (isprint((int)c))
adamc@280	2283 *s2++ = c;
adamc@879	2284 else if (uw_Estrings) {
adamc@737	2285 sprintf(s2, "\\%03o", c);
adamc@280	2286 s2 += 4;
adamc@280	2287 }
adamc@879	2288 else
adamc@879	2289 uw_error(ctx, FATAL, "Non-printable character %u in string to SQLify", c);
adamc@280	2290 }
adamc@280	2291 }
adamc@280	2292
adamc@879	2293 *s2++ = '\'';
adamc@879	2294 strcpy(s2, uw_sqlsuffixString);
adamc@879	2295 ctx->heap.front = s2 + 1 + strlen(uw_sqlsuffixString);
adamc@280	2296 return r;
adamc@280	2297 }
adamc@281	2298
adamc@1011	2299 uw_Basis_string uw_Basis_sqlifyChar(uw_context ctx, uw_Basis_char c) {
adamc@1011	2300 char r, s2;
adamc@1011	2301
adamc@1011	2302 uw_check_heap(ctx, 5 + uw_Estrings + strlen(uw_sqlsuffixChar));
adamc@1011	2303
adamc@1011	2304 r = s2 = ctx->heap.front;
adamc@1011	2305 if (uw_Estrings)
adamc@1011	2306 *s2++ = 'E';
adamc@1011	2307 *s2++ = '\'';
adamc@1011	2308
adamc@1011	2309 switch (c) {
adamc@1011	2310 case '\'':
adamc@1011	2311 if (uw_Estrings)
adamc@1011	2312 strcpy(s2, "\\'");
adamc@1011	2313 else
adamc@1011	2314 strcpy(s2, "''");
adamc@1011	2315 s2 += 2;
adamc@1011	2316 break;
adamc@1011	2317 case '\\':
adamc@1011	2318 if (uw_Estrings) {
adamc@1011	2319 strcpy(s2, "\\\\");
adamc@1011	2320 s2 += 2;
adamc@1011	2321 } else
adamc@1011	2322 *s2++ = '\\';
adamc@1011	2323 break;
adamc@1011	2324 default:
adamc@1150	2325 if (isprint((int)c))
adamc@1011	2326 *s2++ = c;
adamc@1011	2327 else if (uw_Estrings) {
adamc@1011	2328 sprintf(s2, "\\%03o", c);
adamc@1011	2329 s2 += 4;
adamc@1011	2330 }
adamc@1011	2331 else
adamc@1011	2332 uw_error(ctx, FATAL, "Non-printable character %u in char to SQLify", c);
adamc@1011	2333 }
adamc@1011	2334
adamc@1011	2335 *s2++ = '\'';
adamc@1011	2336 strcpy(s2, uw_sqlsuffixChar);
adamc@1011	2337 ctx->heap.front = s2 + 1 + strlen(uw_sqlsuffixChar);
adamc@1011	2338 return r;
adamc@1011	2339 }
adamc@1011	2340
adamc@879	2341 char *uw_sqlsuffixBlob = "::bytea";
adamc@879	2342
adamc@737	2343 uw_Basis_string uw_Basis_sqlifyBlob(uw_context ctx, uw_Basis_blob b) {
adamc@737	2344 char r, s2;
adamc@737	2345 size_t i;
adamc@737	2346
adamc@879	2347 uw_check_heap(ctx, b.size * 5 + 3 + uw_Estrings + strlen(uw_sqlsuffixBlob));
adamc@737	2348
adamc@737	2349 r = s2 = ctx->heap.front;
adamc@879	2350 if (uw_Estrings)
adamc@879	2351 *s2++ = 'E';
adamc@737	2352 *s2++ = '\'';
adamc@737	2353
adamc@737	2354 for (i = 0; i < b.size; ++i) {
adamc@737	2355 char c = b.data[i];
adamc@737	2356
adamc@737	2357 switch (c) {
adamc@737	2358 case '\'':
adamc@885	2359 if (uw_Estrings)
adamc@885	2360 strcpy(s2, "\\'");
adamc@885	2361 else
adamc@885	2362 strcpy(s2, "''");
adamc@737	2363 s2 += 2;
adamc@737	2364 break;
adamc@737	2365 case '\\':
adamc@885	2366 if (uw_Estrings) {
adamc@885	2367 strcpy(s2, "\\\\\\\\");
adamc@885	2368 s2 += 4;
adamc@885	2369 } else
adamc@885	2370 *s2++ = '\\';
adamc@737	2371 break;
adamc@737	2372 default:
adamc@1150	2373 if (isprint((int)c))
adamc@737	2374 *s2++ = c;
adamc@879	2375 else if (uw_Estrings) {
adamc@737	2376 sprintf(s2, "\\\\%03o", c);
adamc@737	2377 s2 += 5;
adamc@737	2378 }
adamc@879	2379 else
adamc@879	2380 uw_error(ctx, FATAL, "Non-printable character %u in blob to SQLify", c);
adamc@737	2381 }
adamc@737	2382 }
adamc@737	2383
adamc@879	2384 *s2++ = '\'';
adamc@879	2385 strcpy(s2, uw_sqlsuffixBlob);
adamc@879	2386 ctx->heap.front = s2 + 1 + strlen(uw_sqlsuffixBlob);
adamc@737	2387 return r;
adamc@737	2388 }
adamc@737	2389
adamc@682	2390 char *uw_Basis_sqlifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	2391 int len;
adamc@682	2392 char *r;
adamc@682	2393 unsigned long long combo = ((unsigned long long)chn.cli << 32) \| chn.chn;
adamc@682	2394
adamc@682	2395 uw_check_heap(ctx, INTS_MAX + 7);
adamc@682	2396 r = ctx->heap.front;
adamc@879	2397 sprintf(r, uw_sqlfmtInt, combo, &len);
adamc@682	2398 ctx->heap.front += len+1;
adamc@682	2399 return r;
adamc@682	2400 }
adamc@682	2401
adamc@682	2402 char *uw_Basis_attrifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	2403 int len;
adamc@682	2404 char *r;
adamc@682	2405 unsigned long long combo = ((unsigned long long)chn.cli << 32) \| chn.chn;
adamc@682	2406
adamc@682	2407 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	2408 r = ctx->heap.front;
adamc@682	2409 sprintf(r, "%lld%n", combo, &len);
adamc@682	2410 ctx->heap.front += len+1;
adamc@682	2411 return r;
adamc@682	2412 }
adamc@682	2413
adamc@879	2414 char *uw_sqlfmtUint4 = "%u::int4%n";
adamc@879	2415
adamc@682	2416 char *uw_Basis_sqlifyClient(uw_context ctx, uw_Basis_client cli) {
adamc@682	2417 int len;
adamc@682	2418 char *r;
adamc@682	2419
adamc@682	2420 uw_check_heap(ctx, INTS_MAX + 7);
adamc@682	2421 r = ctx->heap.front;
adamc@879	2422 sprintf(r, uw_sqlfmtUint4, cli, &len);
adamc@682	2423 ctx->heap.front += len+1;
adamc@682	2424 return r;
adamc@682	2425 }
adamc@682	2426
adamc@682	2427 char *uw_Basis_attrifyClient(uw_context ctx, uw_Basis_client cli) {
adamc@682	2428 int len;
adamc@682	2429 char *r;
adamc@682	2430
adamc@682	2431 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	2432 r = ctx->heap.front;
adamc@682	2433 sprintf(r, "%u%n", cli, &len);
adamc@682	2434 ctx->heap.front += len+1;
adamc@682	2435 return r;
adamc@682	2436 }
adamc@682	2437
adamc@467	2438 uw_Basis_string uw_Basis_sqlifyStringN(uw_context ctx, uw_Basis_string s) {
adamc@467	2439 if (s == NULL)
adamc@467	2440 return "NULL";
adamc@467	2441 else
adamc@467	2442 return uw_Basis_sqlifyString(ctx, s);
adamc@467	2443 }
adamc@467	2444
adamc@311	2445 char *uw_Basis_sqlifyBool(uw_context ctx, uw_Basis_bool b) {
adamc@311	2446 if (b == uw_Basis_False)
adamc@281	2447 return "FALSE";
adamc@281	2448 else
adamc@281	2449 return "TRUE";
adamc@281	2450 }
adamc@282	2451
adamc@467	2452 char uw_Basis_sqlifyBoolN(uw_context ctx, uw_Basis_bool b) {
adamc@467	2453 if (b == NULL)
adamc@467	2454 return "NULL";
adamc@467	2455 else
adamc@467	2456 return uw_Basis_sqlifyBool(ctx, *b);
adamc@467	2457 }
adamc@467	2458
adamc@439	2459 char *uw_Basis_sqlifyTime(uw_context ctx, uw_Basis_time t) {
adamc@439	2460 size_t len;
adamc@682	2461 char r, s;
adamc@682	2462 struct tm stm;
adamc@682	2463
adamc@682	2464 if (localtime_r(&t, &stm)) {
adamc@682	2465 s = uw_malloc(ctx, TIMES_MAX);
adamc@682	2466 len = strftime(s, TIMES_MAX, TIME_FMT, &stm);
adamc@682	2467 r = uw_malloc(ctx, len + 14);
adamc@682	2468 sprintf(r, "'%s'::timestamp", s);
adamc@682	2469 return r;
adamc@682	2470 } else
adamc@682	2471 return "<Invalid time>";
adamc@682	2472 }
adamc@682	2473
adamc@682	2474 char *uw_Basis_attrifyTime(uw_context ctx, uw_Basis_time t) {
adamc@682	2475 size_t len;
adamc@439	2476 char *r;
adamc@439	2477 struct tm stm;
adamc@439	2478
adamc@439	2479 if (localtime_r(&t, &stm)) {
adamc@439	2480 uw_check_heap(ctx, TIMES_MAX);
adamc@666	2481 r = ctx->heap.front;
adamc@439	2482 len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
adamc@666	2483 ctx->heap.front += len+1;
adamc@439	2484 return r;
adamc@439	2485 } else
adamc@439	2486 return "<Invalid time>";
adamc@439	2487 }
adamc@439	2488
adamc@467	2489 char uw_Basis_sqlifyTimeN(uw_context ctx, uw_Basis_time t) {
adamc@467	2490 if (t == NULL)
adamc@467	2491 return "NULL";
adamc@467	2492 else
adamc@467	2493 return uw_Basis_sqlifyTime(ctx, *t);
adamc@467	2494 }
adamc@467	2495
adamc@311	2496 char *uw_Basis_ensqlBool(uw_Basis_bool b) {
adamc@311	2497 static uw_Basis_int true = 1;
adamc@311	2498 static uw_Basis_int false = 0;
adamc@282	2499
adamc@311	2500 if (b == uw_Basis_False)
adamc@282	2501 return (char *)&false;
adamc@282	2502 else
adamc@282	2503 return (char *)&true;
adamc@282	2504 }
adamc@284	2505
adamc@311	2506 uw_Basis_string uw_Basis_intToString(uw_context ctx, uw_Basis_int n) {
adamc@284	2507 int len;
adamc@284	2508 char *r;
adamc@284	2509
adamc@311	2510 uw_check_heap(ctx, INTS_MAX);
adamc@666	2511 r = ctx->heap.front;
adamc@284	2512 sprintf(r, "%lld%n", n, &len);
adamc@666	2513 ctx->heap.front += len+1;
adamc@284	2514 return r;
adamc@284	2515 }
adamc@285	2516
adamc@311	2517 uw_Basis_string uw_Basis_floatToString(uw_context ctx, uw_Basis_float n) {
adamc@285	2518 int len;
adamc@285	2519 char *r;
adamc@285	2520
adamc@311	2521 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	2522 r = ctx->heap.front;
adamc@285	2523 sprintf(r, "%g%n", n, &len);
adamc@666	2524 ctx->heap.front += len+1;
adamc@285	2525 return r;
adamc@285	2526 }
adamc@285	2527
adamc@821	2528 uw_Basis_string uw_Basis_charToString(uw_context ctx, uw_Basis_char ch) {
adamc@821	2529 char *r = uw_malloc(ctx, 2);
adamc@821	2530 r[0] = ch;
adamc@821	2531 r[1] = 0;
adamc@821	2532 return r;
adamc@821	2533 }
adamc@821	2534
adamc@311	2535 uw_Basis_string uw_Basis_boolToString(uw_context ctx, uw_Basis_bool b) {
adamc@311	2536 if (b == uw_Basis_False)
adamc@285	2537 return "False";
adamc@285	2538 else
adamc@285	2539 return "True";
adamc@285	2540 }
adamc@288	2541
adamc@436	2542 uw_Basis_string uw_Basis_timeToString(uw_context ctx, uw_Basis_time t) {
adamc@436	2543 size_t len;
adamc@436	2544 char *r;
adamc@436	2545 struct tm stm;
adamc@436	2546
adamc@436	2547 if (localtime_r(&t, &stm)) {
adamc@436	2548 uw_check_heap(ctx, TIMES_MAX);
adamc@666	2549 r = ctx->heap.front;
adamc@436	2550 len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
adamc@666	2551 ctx->heap.front += len+1;
adamc@436	2552 return r;
adamc@436	2553 } else
adamc@436	2554 return "<Invalid time>";
adamc@436	2555 }
adamc@288	2556
adamc@311	2557 uw_Basis_int *uw_Basis_stringToInt(uw_context ctx, uw_Basis_string s) {
adamc@288	2558 char *endptr;
adamc@311	2559 uw_Basis_int n = strtoll(s, &endptr, 10);
adamc@288	2560
adamc@288	2561 if (s != '\0' && endptr == '\0') {
adamc@311	2562 uw_Basis_int *r = uw_malloc(ctx, sizeof(uw_Basis_int));
adamc@288	2563 *r = n;
adamc@288	2564 return r;
adamc@288	2565 } else
adamc@288	2566 return NULL;
adamc@288	2567 }
adamc@289	2568
adamc@311	2569 uw_Basis_float *uw_Basis_stringToFloat(uw_context ctx, uw_Basis_string s) {
adamc@289	2570 char *endptr;
adamc@311	2571 uw_Basis_float n = strtod(s, &endptr);
adamc@289	2572
adamc@289	2573 if (s != '\0' && endptr == '\0') {
adamc@311	2574 uw_Basis_float *r = uw_malloc(ctx, sizeof(uw_Basis_float));
adamc@289	2575 *r = n;
adamc@289	2576 return r;
adamc@289	2577 } else
adamc@289	2578 return NULL;
adamc@289	2579 }
adamc@289	2580
adamc@821	2581 uw_Basis_char *uw_Basis_stringToChar(uw_context ctx, uw_Basis_string s) {
adamc@821	2582 if (s[0] == 0) {
adamc@821	2583 uw_Basis_char *r = uw_malloc(ctx, 1);
adamc@821	2584 r[0] = 0;
adamc@821	2585 return r;
adamc@821	2586 } else if (s[1] != 0)
adamc@821	2587 return NULL;
adamc@821	2588 else {
adamc@821	2589 uw_Basis_char *r = uw_malloc(ctx, 1);
adamc@821	2590 r[0] = s[0];
adamc@821	2591 return r;
adamc@821	2592 }
adamc@821	2593 }
adamc@821	2594
adamc@311	2595 uw_Basis_bool *uw_Basis_stringToBool(uw_context ctx, uw_Basis_string s) {
adamc@311	2596 static uw_Basis_bool true = uw_Basis_True;
adamc@311	2597 static uw_Basis_bool false = uw_Basis_False;
adamc@289	2598
adamc@289	2599 if (!strcasecmp (s, "True"))
adamc@289	2600 return &true;
adamc@289	2601 else if (!strcasecmp (s, "False"))
adamc@289	2602 return &false;
adamc@289	2603 else
adamc@289	2604 return NULL;
adamc@289	2605 }
adamc@292	2606
adamc@436	2607 uw_Basis_time *uw_Basis_stringToTime(uw_context ctx, uw_Basis_string s) {
adamc@438	2608 char dot = strchr(s, '.'), end = strchr(s, 0);
adamc@436	2609 struct tm stm;
adamc@436	2610
adamc@439	2611 if (dot) {
adamc@439	2612 *dot = 0;
adamc@439	2613 if (strptime(s, TIME_FMT_PG, &stm) == end) {
adamc@439	2614 *dot = '.';
adamc@439	2615 uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
adamc@439	2616 *r = mktime(&stm);
adamc@439	2617 return r;
adamc@439	2618 }
adamc@439	2619 else {
adamc@439	2620 *dot = '.';
adamc@439	2621 return NULL;
adamc@439	2622 }
adamc@436	2623 }
adamc@439	2624 else {
adamc@439	2625 if (strptime(s, TIME_FMT_PG, &stm) == end) {
adamc@439	2626 uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
adamc@439	2627 *r = mktime(&stm);
adamc@439	2628 return r;
adamc@439	2629 }
adamc@439	2630 else if (strptime(s, TIME_FMT, &stm) == end) {
adamc@439	2631 uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
adamc@439	2632 *r = mktime(&stm);
adamc@439	2633 return r;
adamc@439	2634 }
adamc@439	2635 else
adamc@439	2636 return NULL;
adamc@439	2637 }
adamc@436	2638 }
adamc@436	2639
adamc@311	2640 uw_Basis_int uw_Basis_stringToInt_error(uw_context ctx, uw_Basis_string s) {
adamc@292	2641 char *endptr;
adamc@311	2642 uw_Basis_int n = strtoll(s, &endptr, 10);
adamc@292	2643
adamc@292	2644 if (s != '\0' && endptr == '\0')
adamc@292	2645 return n;
adamc@292	2646 else
adamc@311	2647 uw_error(ctx, FATAL, "Can't parse int: %s", s);
adamc@292	2648 }
adamc@293	2649
adamc@682	2650 #include <errno.h>
adamc@682	2651
adamc@678	2652 uw_Basis_channel uw_Basis_stringToChannel_error(uw_context ctx, uw_Basis_string s) {
adamc@682	2653 unsigned long long n;
adamc@682	2654
adamc@682	2655 if (sscanf(s, "%llu", &n) < 1)
adamc@682	2656 uw_error(ctx, FATAL, "Can't parse channel: %s", s);
adamc@682	2657 else {
adamc@682	2658 uw_Basis_channel ch = {n >> 32, n & ((1ull << 32) - 1)};
adamc@682	2659 return ch;
adamc@682	2660 }
adamc@682	2661 }
adamc@682	2662
adamc@682	2663 uw_Basis_client uw_Basis_stringToClient_error(uw_context ctx, uw_Basis_string s) {
adamc@678	2664 char *endptr;
adamc@682	2665 unsigned long n = strtoul(s, &endptr, 10);
adamc@678	2666
adamc@678	2667 if (s != '\0' && endptr == '\0')
adamc@678	2668 return n;
adamc@678	2669 else
adamc@682	2670 uw_error(ctx, FATAL, "Can't parse client: %s", s);
adamc@678	2671 }
adamc@678	2672
adamc@311	2673 uw_Basis_float uw_Basis_stringToFloat_error(uw_context ctx, uw_Basis_string s) {
adamc@293	2674 char *endptr;
adamc@311	2675 uw_Basis_float n = strtod(s, &endptr);
adamc@293	2676
adamc@293	2677 if (s != '\0' && endptr == '\0')
adamc@293	2678 return n;
adamc@293	2679 else
adamc@311	2680 uw_error(ctx, FATAL, "Can't parse float: %s", s);
adamc@293	2681 }
adamc@293	2682
adamc@821	2683 uw_Basis_char uw_Basis_stringToChar_error(uw_context ctx, uw_Basis_string s) {
adamc@821	2684 if (s[0] == 0)
adamc@821	2685 return 0;
adamc@821	2686 else if (s[1] != 0)
adamc@821	2687 uw_error(ctx, FATAL, "Can't parse char: %s", s);
adamc@821	2688 else
adamc@821	2689 return s[0];
adamc@821	2690 }
adamc@821	2691
adamc@311	2692 uw_Basis_bool uw_Basis_stringToBool_error(uw_context ctx, uw_Basis_string s) {
adamc@296	2693 if (!strcasecmp(s, "T") \|\| !strcasecmp (s, "True"))
adamc@311	2694 return uw_Basis_True;
adamc@296	2695 else if (!strcasecmp(s, "F") \|\| !strcasecmp (s, "False"))
adamc@311	2696 return uw_Basis_False;
adamc@293	2697 else
adamc@311	2698 uw_error(ctx, FATAL, "Can't parse bool: %s", s);
adamc@293	2699 }
adamc@436	2700
adamc@436	2701 uw_Basis_time uw_Basis_stringToTime_error(uw_context ctx, uw_Basis_string s) {
adamc@438	2702 char dot = strchr(s, '.'), end = strchr(s, 0);
adamc@436	2703 struct tm stm = {};
adamc@436	2704
adamc@438	2705 if (dot) {
adamc@438	2706 *dot = 0;
adamc@438	2707 if (strptime(s, TIME_FMT_PG, &stm)) {
adamc@438	2708 *dot = '.';
adamc@438	2709 return mktime(&stm);
adamc@438	2710 }
adamc@438	2711 else {
adamc@438	2712 *dot = '.';
adamc@438	2713 uw_error(ctx, FATAL, "Can't parse time: %s", s);
adamc@438	2714 }
adamc@438	2715 }
adamc@438	2716 else {
adamc@439	2717 if (strptime(s, TIME_FMT_PG, &stm) == end)
adamc@439	2718 return mktime(&stm);
adamc@439	2719 else if (strptime(s, TIME_FMT, &stm) == end)
adamc@438	2720 return mktime(&stm);
adamc@438	2721 else
adamc@438	2722 uw_error(ctx, FATAL, "Can't parse time: %s", s);
adamc@438	2723 }
adamc@436	2724 }
adamc@457	2725
adamc@939	2726 uw_Basis_time uw_Basis_unsqlTime(uw_context ctx, uw_Basis_string s) {
adamc@939	2727 char dot = strchr(s, '.'), end = strchr(s, 0);
adamc@939	2728 struct tm stm = {};
adamc@939	2729
adamc@939	2730 if (dot) {
adamc@939	2731 *dot = 0;
adamc@939	2732 if (strptime(s, TIME_FMT_PG, &stm)) {
adamc@939	2733 *dot = '.';
adamc@939	2734 return mktime(&stm);
adamc@939	2735 }
adamc@939	2736 else {
adamc@939	2737 *dot = '.';
adamc@939	2738 uw_error(ctx, FATAL, "Can't parse time: %s", s);
adamc@939	2739 }
adamc@939	2740 }
adamc@939	2741 else {
adamc@939	2742 if (strptime(s, TIME_FMT_PG, &stm) == end) {
adamc@939	2743 return mktime(&stm);
adamc@939	2744 } else if (strptime(s, TIME_FMT, &stm) == end) {
adamc@939	2745 return mktime(&stm);
adamc@939	2746 } else
adamc@939	2747 uw_error(ctx, FATAL, "Can't parse time: %s", s);
adamc@939	2748 }
adamc@939	2749 }
adamc@939	2750
adamc@742	2751 uw_Basis_blob uw_Basis_stringToBlob_error(uw_context ctx, uw_Basis_string s, size_t len) {
adamc@742	2752 char *r = ctx->heap.front;
adamc@742	2753 uw_Basis_blob b = {len, r};
adamc@742	2754
adamc@742	2755 uw_check_heap(ctx, len);
adamc@742	2756
adamc@742	2757 while (*s) {
adamc@742	2758 if (s[0] == '\\') {
adamc@742	2759 if (s[1] == '\\') {
adamc@742	2760 *r++ = '\\';
adamc@742	2761 s += 2;
adamc@1153	2762 } else if (isdigit((int)s[1]) && isdigit((int)s[2]) && isdigit((int)s[3])) {
adamc@742	2763 r++ = (s[1] - '0') 8 * 8 + ((s[2] - '0') * 8) + (s[3] - '0');
adamc@742	2764 s += 4;
adamc@742	2765 }
adamc@742	2766 else {
adamc@742	2767 *r++ = '\\';
adamc@742	2768 ++s;
adamc@742	2769 }
adamc@742	2770 } else {
adamc@742	2771 *r++ = s[0];
adamc@742	2772 ++s;
adamc@742	2773 }
adamc@742	2774 }
adamc@742	2775
adamc@742	2776 b.size = r - ctx->heap.front;
adamc@742	2777 ctx->heap.front = r;
adamc@742	2778 return b;
adamc@742	2779 }
adamc@742	2780
adamc@1052	2781 #define THE_PAST "expires=Mon, 01-01-1970 00:00:00 GMT"
adamc@1052	2782
adamc@463	2783 uw_Basis_string uw_Basis_get_cookie(uw_context ctx, uw_Basis_string c) {
adamc@463	2784 int len = strlen(c);
adamc@854	2785 char *p = ctx->outHeaders.start;
adamc@474	2786
adamc@1134	2787 while ((p = strstr(p, "\nSet-Cookie: "))) {
adamc@474	2788 char *p2;
adamc@474	2789 p += 13;
adamc@474	2790 p2 = strchr(p, '=');
adamc@474	2791
adamc@474	2792 if (p2) {
adamc@474	2793 size_t sz = strcspn(p2+1, ";\r\n");
adamc@474	2794
adamc@474	2795 if (!strncasecmp(p, c, p2 - p)) {
adamc@1052	2796 if (sz == 0 && strstr(p2+2, THE_PAST))
adamc@1052	2797 return NULL;
adamc@1052	2798 else {
adamc@1052	2799 char *ret = uw_malloc(ctx, sz + 1);
adamc@1052	2800 memcpy(ret, p2+1, sz);
adamc@1052	2801 ret[sz] = 0;
adamc@1052	2802 return ret;
adamc@1052	2803 }
adamc@474	2804 }
adamc@474	2805 }
adamc@474	2806 }
adamc@463	2807
adamc@1134	2808 if ((p = uw_Basis_requestHeader(ctx, "Cookie"))) {
adamc@1051	2809 char *p2;
adamc@1051	2810
adamc@854	2811 while (1) {
adamc@1051	2812 if (!strncmp(p, c, len) && p[len] == '=') {
adamc@1134	2813 if ((p2 = strchr(p, ';'))) {
adamc@1051	2814 size_t n = p2 - (p + len);
adamc@1051	2815 char *r = uw_malloc(ctx, n);
adamc@1051	2816 memcpy(r, p + 1 + len, n-1);
adamc@1051	2817 r[n-1] = 0;
adamc@1051	2818 return r;
adamc@1051	2819 } else
adamc@1051	2820 return p + 1 + len;
adamc@1134	2821 } else if ((p = strchr(p, ';')))
adamc@854	2822 p += 2;
adamc@463	2823 else
adamc@463	2824 return NULL;
adamc@463	2825 }
adamc@463	2826 }
adamc@792	2827
adamc@792	2828 return NULL;
adamc@457	2829 }
adamc@462	2830
adamc@1050	2831 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	2832 uw_write_header(ctx, "Set-Cookie: ");
adamc@462	2833 uw_write_header(ctx, c);
adamc@462	2834 uw_write_header(ctx, "=");
adamc@462	2835 uw_write_header(ctx, v);
adamc@466	2836 uw_write_header(ctx, "; path=");
adamc@466	2837 uw_write_header(ctx, prefix);
adamc@1050	2838 if (expires) {
adamc@1050	2839 char formatted[30];
adamc@1050	2840 struct tm tm;
adamc@1050	2841
adamc@1050	2842 gmtime_r(expires, &tm);
adamc@1050	2843
adamc@1050	2844 strftime(formatted, sizeof formatted, "%a, %d-%b-%Y %T GMT", &tm);
adamc@1050	2845
adamc@1050	2846 uw_write_header(ctx, "; expires=");
adamc@1050	2847 uw_write_header(ctx, formatted);
adamc@1050	2848 }
adamc@1050	2849 if (secure)
adamc@1050	2850 uw_write_header(ctx, "; secure");
adamc@462	2851 uw_write_header(ctx, "\r\n");
adamc@462	2852
adamc@462	2853 return uw_unit_v;
adamc@462	2854 }
adamc@667	2855
adamc@1050	2856 uw_unit uw_Basis_clear_cookie(uw_context ctx, uw_Basis_string prefix, uw_Basis_string c) {
adamc@1050	2857 uw_write_header(ctx, "Set-Cookie: ");
adamc@1050	2858 uw_write_header(ctx, c);
adamc@1050	2859 uw_write_header(ctx, "=; path=");
adamc@1050	2860 uw_write_header(ctx, prefix);
adamc@1052	2861 uw_write_header(ctx, "; " THE_PAST "\r\n");
adamc@1050	2862
adamc@1050	2863 return uw_unit_v;
adamc@1050	2864 }
adamc@1050	2865
adamc@1113	2866 size_t uw_deltas_max = SIZE_MAX;
adamc@1113	2867
adamc@682	2868 static delta *allocate_delta(uw_context ctx, unsigned client) {
adamc@682	2869 unsigned i;
adamc@682	2870 delta *d;
adamc@671	2871
adamc@682	2872 for (i = 0; i < ctx->used_deltas; ++i)
adamc@682	2873 if (ctx->deltas[i].client == client)
adamc@682	2874 return &ctx->deltas[i];
adamc@671	2875
adamc@682	2876 if (ctx->used_deltas >= ctx->n_deltas) {
adamc@1113	2877 if (ctx->n_deltas + 1 > uw_deltas_max)
adamc@1113	2878 uw_error(ctx, FATAL, "Exceeded limit on number of deltas");
adamc@1113	2879
adamc@682	2880 ctx->deltas = realloc(ctx->deltas, sizeof(delta) * ++ctx->n_deltas);
adamc@1113	2881 buf_init(uw_messages_max, &ctx->deltas[ctx->n_deltas-1].msgs, 0);
adamc@682	2882 }
adamc@671	2883
adamc@682	2884 d = &ctx->deltas[ctx->used_deltas++];
adamc@682	2885 d->client = client;
adamc@682	2886 buf_reset(&d->msgs);
adamc@682	2887 return d;
adamc@671	2888 }
adamc@671	2889
adamc@668	2890 uw_Basis_channel uw_Basis_new_channel(uw_context ctx, uw_unit u) {
adamc@682	2891 if (ctx->client == NULL)
adamc@682	2892 uw_error(ctx, FATAL, "Attempt to create channel on request not associated with a persistent connection");
adamc@671	2893
adamc@682	2894 return new_channel(ctx->client);
adamc@668	2895 }
adamc@668	2896
adamc@668	2897 uw_unit uw_Basis_send(uw_context ctx, uw_Basis_channel chn, uw_Basis_string msg) {
adamc@682	2898 delta *d = allocate_delta(ctx, chn.cli);
adamc@682	2899 size_t len;
adamc@682	2900 int preLen;
adamc@682	2901 char pre[INTS_MAX + 2];
adamc@668	2902
adamc@682	2903 len = strlen(msg);
adamc@682	2904
adamc@682	2905 sprintf(pre, "%u\n%n", chn.chn, &preLen);
adamc@682	2906
adamc@1113	2907 ctx_buf_append(ctx, "messages", &d->msgs, pre, preLen);
adamc@1113	2908 ctx_buf_append(ctx, "messages", &d->msgs, msg, len);
adamc@1113	2909 ctx_buf_append(ctx, "messages", &d->msgs, "\n", 1);
adamc@671	2910
adamc@671	2911 return uw_unit_v;
adamc@668	2912 }
adamc@671	2913
adam@1327	2914 int uw_rollback(uw_context ctx, int will_retry) {
adamc@1131	2915 int i;
adamc@1131	2916 cleanup *cl;
adamc@1131	2917
adamc@1131	2918 if (ctx->client)
adamc@1131	2919 release_client(ctx->client);
adamc@1131	2920
adamc@1131	2921 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adamc@1131	2922 cl->func(cl->arg);
adamc@1131	2923
adamc@1131	2924 ctx->cleanup_front = ctx->cleanup;
adamc@1131	2925
adamc@1131	2926 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@1131	2927 if (ctx->transactionals[i].rollback != NULL)
adamc@1131	2928 ctx->transactionals[i].rollback(ctx->transactionals[i].data);
adamc@1131	2929
adamc@1131	2930 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@1131	2931 if (ctx->transactionals[i].free)
adam@1327	2932 ctx->transactionals[i].free(ctx->transactionals[i].data, will_retry);
adamc@1131	2933
adamc@1144	2934 return ctx->app ? ctx->app->db_rollback(ctx) : 0;
adamc@1131	2935 }
adamc@1131	2936
adamc@671	2937 void uw_commit(uw_context ctx) {
adamc@1104	2938 int i;
adamc@1104	2939
adamc@1131	2940 if (uw_has_error(ctx)) {
adam@1327	2941 uw_rollback(ctx, 0);
adamc@1131	2942 return;
adamc@1131	2943 }
adamc@1131	2944
adamc@1104	2945 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@771	2946 if (ctx->transactionals[i].rollback != NULL)
adamc@1131	2947 if (ctx->transactionals[i].commit) {
adamc@1083	2948 ctx->transactionals[i].commit(ctx->transactionals[i].data);
adamc@1131	2949 if (uw_has_error(ctx)) {
adam@1327	2950 uw_rollback(ctx, 0);
adamc@1131	2951 return;
adamc@1131	2952 }
adamc@1131	2953 }
adamc@771	2954
adamc@1104	2955 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@771	2956 if (ctx->transactionals[i].rollback == NULL)
adamc@1131	2957 if (ctx->transactionals[i].commit) {
adamc@1083	2958 ctx->transactionals[i].commit(ctx->transactionals[i].data);
adamc@1131	2959 if (uw_has_error(ctx)) {
adam@1327	2960 uw_rollback(ctx, 0);
adamc@1131	2961 return;
adamc@1131	2962 }
adamc@1131	2963 }
adamc@1131	2964
adamc@1131	2965 if (ctx->app->db_commit(ctx)) {
adamc@1131	2966 uw_set_error_message(ctx, "Error running SQL COMMIT");
adamc@1131	2967 return;
adamc@1131	2968 }
adamc@682	2969
adamc@682	2970 for (i = 0; i < ctx->used_deltas; ++i) {
adamc@682	2971 delta *d = &ctx->deltas[i];
adamc@682	2972 client *c = find_client(d->client);
adamc@682	2973
adamc@682	2974 assert (c != NULL && c->mode == USED);
adamc@682	2975
adamc@685	2976 client_send(c, &d->msgs);
adamc@682	2977 }
adamc@682	2978
adamc@682	2979 if (ctx->client)
adamc@685	2980 release_client(ctx->client);
adamc@771	2981
adamc@1104	2982 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@1083	2983 if (ctx->transactionals[i].free)
adam@1327	2984 ctx->transactionals[i].free(ctx->transactionals[i].data, 0);
adamc@916	2985
adamc@916	2986 // Splice script data into appropriate part of page
adamc@1065	2987 if (ctx->returning_indirectly \|\| ctx->script_header[0] == 0) {
adamc@995	2988 char *start = strstr(ctx->page.start, "<sc>");
adamc@995	2989 if (start) {
adamc@995	2990 memmove(start, start + 4, buf_used(&ctx->page) - (start - ctx->page.start) - 4);
adamc@995	2991 ctx->page.front -= 4;
adamc@995	2992 }
adamc@995	2993 } else if (buf_used(&ctx->script) == 0) {
adamc@916	2994 size_t len = strlen(ctx->script_header);
adamc@916	2995 char *start = strstr(ctx->page.start, "<sc>");
adamc@916	2996 if (start) {
adamc@1113	2997 ctx_buf_check(ctx, "page", &ctx->page, buf_used(&ctx->page) - 4 + len);
adamc@917	2998 start = strstr(ctx->page.start, "<sc>");
adamc@916	2999 memmove(start + len, start + 4, buf_used(&ctx->page) - (start - ctx->page.start) - 3);
adamc@916	3000 ctx->page.front += len - 4;
adamc@916	3001 memcpy(start, ctx->script_header, len);
adamc@916	3002 }
adamc@916	3003 } else {
adamc@916	3004 size_t lenH = strlen(ctx->script_header), len = buf_used(&ctx->script);
adamc@916	3005 size_t lenP = lenH + 40 + len;
adamc@916	3006 char *start = strstr(ctx->page.start, "<sc>");
adamc@916	3007 if (start) {
adamc@1113	3008 ctx_buf_check(ctx, "page", &ctx->page, buf_used(&ctx->page) - 4 + lenP);
adamc@917	3009 start = strstr(ctx->page.start, "<sc>");
adamc@916	3010 memmove(start + lenP, start + 4, buf_used(&ctx->page) - (start - ctx->page.start) - 3);
adamc@916	3011 ctx->page.front += lenP - 4;
adamc@916	3012 memcpy(start, ctx->script_header, lenH);
adamc@916	3013 memcpy(start + lenH, "<script type=\"text/javascript\">", 31);
adamc@916	3014 memcpy(start + lenH + 31, ctx->script.start, len);
adamc@916	3015 memcpy(start + lenH + 31 + len, "</script>", 9);
adamc@916	3016 }
adamc@916	3017 }
adamc@671	3018 }
adamc@671	3019
adamc@683	3020
adamc@1113	3021 size_t uw_transactionals_max = SIZE_MAX;
adamc@1113	3022
adamc@771	3023 void uw_register_transactional(uw_context ctx, void *data, uw_callback commit, uw_callback rollback,
adam@1327	3024 uw_callback_with_retry free) {
adamc@771	3025 if (ctx->used_transactionals >= ctx->n_transactionals) {
adamc@1113	3026 if (ctx->used_transactionals+1 > uw_transactionals_max)
adamc@1113	3027 uw_error(ctx, FATAL, "Exceeded limit on number of transactionals");
adamc@1084	3028 ctx->transactionals = realloc(ctx->transactionals, sizeof(transactional) * (ctx->used_transactionals+1));
adamc@771	3029 ++ctx->n_transactionals;
adamc@771	3030 }
adamc@771	3031
adamc@771	3032 ctx->transactionals[ctx->used_transactionals].data = data;
adamc@771	3033 ctx->transactionals[ctx->used_transactionals].commit = commit;
adamc@771	3034 ctx->transactionals[ctx->used_transactionals].rollback = rollback;
adamc@771	3035 ctx->transactionals[ctx->used_transactionals++].free = free;
adamc@771	3036 }
adamc@771	3037
adamc@683	3038
adamc@683	3039 // "Garbage collection"
adamc@683	3040
adamc@1121	3041 void uw_do_expunge(uw_context ctx, uw_Basis_client cli, void *data);
adamc@1121	3042 void uw_post_expunge(uw_context ctx, void *data);
adamc@1121	3043
adamc@1121	3044 static failure_kind uw_expunge(uw_context ctx, uw_Basis_client cli, void *data) {
adamc@683	3045 int r = setjmp(ctx->jmp_buf);
adamc@683	3046
adamc@1121	3047 if (r == 0)
adamc@1121	3048 uw_do_expunge(ctx, cli, data);
adamc@1121	3049 else
adamc@1121	3050 ctx->app->db_rollback(ctx);
adamc@1121	3051
adamc@1121	3052 uw_post_expunge(ctx, data);
adamc@683	3053
adamc@683	3054 return r;
adamc@683	3055 }
adamc@683	3056
adamc@683	3057 void uw_prune_clients(uw_context ctx) {
adamc@683	3058 client c, next, *prev = NULL;
adamc@683	3059 time_t cutoff;
adamc@683	3060
adamc@1094	3061 cutoff = time(NULL) - ctx->app->timeout;
adamc@683	3062
adamc@683	3063 pthread_mutex_lock(&clients_mutex);
adamc@683	3064
adamc@683	3065 for (c = clients_used; c; c = next) {
adamc@683	3066 next = c->next;
adamc@683	3067 pthread_mutex_lock(&c->lock);
adamc@685	3068 if (c->last_contact < cutoff && c->refcount == 0) {
adamc@683	3069 failure_kind fk = UNLIMITED_RETRY;
adamc@683	3070 if (prev)
adamc@683	3071 prev->next = next;
adamc@683	3072 else
adamc@683	3073 clients_used = next;
adamc@684	3074 uw_reset(ctx);
adamc@683	3075 while (fk == UNLIMITED_RETRY) {
adamc@1121	3076 fk = uw_expunge(ctx, c->id, c->data);
adamc@1121	3077 if (fk == UNLIMITED_RETRY)
adamc@684	3078 printf("Unlimited retry during expunge: %s\n", uw_error_message(ctx));
adamc@683	3079 }
adamc@684	3080 if (fk == SUCCESS)
adamc@684	3081 free_client(c);
adamc@1121	3082 else
adamc@856	3083 fprintf(stderr, "Expunge blocked by error: %s\n", uw_error_message(ctx));
adamc@683	3084 }
adamc@683	3085 else
adamc@683	3086 prev = c;
adamc@683	3087 pthread_mutex_unlock(&c->lock);
adamc@683	3088 }
adamc@683	3089
adamc@683	3090 pthread_mutex_unlock(&clients_mutex);
adamc@683	3091 }
adamc@687	3092
adamc@687	3093 failure_kind uw_initialize(uw_context ctx) {
adamc@687	3094 int r = setjmp(ctx->jmp_buf);
adamc@687	3095
adamc@687	3096 if (r == 0) {
adamc@1094	3097 if (ctx->app->db_begin(ctx))
adamc@687	3098 uw_error(ctx, FATAL, "Error running SQL BEGIN");
adamc@1094	3099 ctx->app->initializer(ctx);
adamc@1094	3100 if (ctx->app->db_commit(ctx))
adamc@687	3101 uw_error(ctx, FATAL, "Error running SQL COMMIT");
adamc@687	3102 }
adamc@687	3103
adamc@687	3104 return r;
adamc@687	3105 }
adamc@717	3106
adamc@1065	3107 static int url_bad(uw_Basis_string s) {
adamc@1065	3108 for (; *s; ++s)
adamc@1153	3109 if (!isgraph((int)*s))
adamc@1065	3110 return 1;
adamc@1065	3111
adamc@1065	3112 return 0;
adamc@1065	3113 }
adamc@1065	3114
adamc@717	3115 uw_Basis_string uw_Basis_bless(uw_context ctx, uw_Basis_string s) {
adamc@1065	3116 if (url_bad(s))
adamc@1065	3117 uw_error(ctx, FATAL, "Invalid URL %s", uw_Basis_htmlifyString(ctx, s));
adamc@1094	3118 if (ctx->app->check_url(s))
adamc@770	3119 return s;
adamc@770	3120 else
adamc@770	3121 uw_error(ctx, FATAL, "Disallowed URL %s", uw_Basis_htmlifyString(ctx, s));
adamc@717	3122 }
adamc@734	3123
adamc@770	3124 uw_Basis_string uw_Basis_checkUrl(uw_context ctx, uw_Basis_string s) {
adamc@1065	3125 if (url_bad(s))
adamc@1065	3126 return NULL;
adamc@1094	3127 if (ctx->app->check_url(s))
adamc@770	3128 return s;
adamc@770	3129 else
adamc@770	3130 return NULL;
adamc@770	3131 }
adamc@770	3132
adamc@770	3133 int mime_format(const char *s) {
adamc@770	3134 for (; *s; ++s)
adamc@1153	3135 if (!isalnum((int)s) && s != '/' && s != '-' && s != '.')
adamc@770	3136 return 0;
adamc@770	3137
adamc@770	3138 return 1;
adamc@770	3139 }
adamc@770	3140
adamc@741	3141 uw_Basis_string uw_Basis_blessMime(uw_context ctx, uw_Basis_string s) {
adamc@770	3142 if (!mime_format(s))
adamc@770	3143 uw_error(ctx, FATAL, "MIME type \"%s\" contains invalid character", uw_Basis_htmlifyString(ctx, s));
adamc@770	3144
adamc@1094	3145 if (ctx->app->check_mime(s))
adamc@770	3146 return s;
adamc@770	3147 else
adamc@770	3148 uw_error(ctx, FATAL, "Disallowed MIME type %s", uw_Basis_htmlifyString(ctx, s));
adamc@770	3149 }
adamc@770	3150
adamc@770	3151 uw_Basis_string uw_Basis_checkMime(uw_context ctx, uw_Basis_string s) {
adamc@770	3152 if (!mime_format(s))
adamc@770	3153 return NULL;
adamc@770	3154
adamc@1094	3155 if (ctx->app->check_mime(s))
adamc@770	3156 return s;
adamc@770	3157 else
adamc@770	3158 return NULL;
adamc@741	3159 }
adamc@741	3160
adamc@734	3161 uw_Basis_string uw_unnull(uw_Basis_string s) {
adamc@734	3162 return s ? s : "";
adamc@734	3163 }
adamc@734	3164
adamc@734	3165 extern int uw_hash_blocksize;
adamc@734	3166
adamc@734	3167 uw_Basis_string uw_Basis_makeSigString(uw_context ctx, uw_Basis_string sig) {
adamc@734	3168 uw_Basis_string r = uw_malloc(ctx, 2 * uw_hash_blocksize + 1);
adamc@734	3169 int i;
adamc@734	3170
adamc@734	3171 for (i = 0; i < uw_hash_blocksize; ++i)
adamc@734	3172 sprintf(&r[2i], "%.02X", ((unsigned char )sig)[i]);
adamc@734	3173
adamc@734	3174 return r;
adamc@734	3175 }
adamc@734	3176
adamc@734	3177 uw_Basis_string uw_Basis_sigString(uw_context ctx, uw_unit u) {
adamc@1094	3178 return ctx->app->cookie_sig(ctx);
adamc@734	3179 }
adamc@737	3180
adamc@737	3181 uw_Basis_string uw_Basis_fileName(uw_context ctx, uw_Basis_file f) {
adamc@737	3182 return f.name;
adamc@737	3183 }
adamc@737	3184
adamc@740	3185 uw_Basis_string uw_Basis_fileMimeType(uw_context ctx, uw_Basis_file f) {
adamc@740	3186 return f.type;
adamc@740	3187 }
adamc@740	3188
adamc@745	3189 uw_Basis_int uw_Basis_blobSize(uw_context ctx, uw_Basis_blob b) {
adamc@745	3190 return b.size;
adamc@745	3191 }
adamc@745	3192
adamc@1119	3193 uw_Basis_blob uw_Basis_textBlob(uw_context ctx, uw_Basis_string s) {
adamc@1119	3194 uw_Basis_blob b = {strlen(s), s};
adamc@1119	3195
adamc@1119	3196 return b;
adamc@1119	3197 }
adamc@1119	3198
adamc@737	3199 uw_Basis_blob uw_Basis_fileData(uw_context ctx, uw_Basis_file f) {
adamc@737	3200 return f.data;
adamc@737	3201 }
adamc@741	3202
adamc@741	3203 __attribute__((noreturn)) void uw_return_blob(uw_context ctx, uw_Basis_blob b, uw_Basis_string mimeType) {
adamc@741	3204 cleanup *cl;
adamc@741	3205 int len;
adamc@741	3206
adamc@1065	3207 ctx->returning_indirectly = 1;
adamc@741	3208 buf_reset(&ctx->outHeaders);
adamc@741	3209 buf_reset(&ctx->page);
adamc@741	3210
adamc@856	3211 uw_write_header(ctx, on_success);
adamc@856	3212 uw_write_header(ctx, "Content-Type: ");
adamc@741	3213 uw_write_header(ctx, mimeType);
adamc@741	3214 uw_write_header(ctx, "\r\nContent-Length: ");
adamc@1113	3215 ctx_buf_check(ctx, "headers", &ctx->outHeaders, INTS_MAX);
adamc@1134	3216 sprintf(ctx->outHeaders.front, "%lu%n", (unsigned long)b.size, &len);
adamc@741	3217 ctx->outHeaders.front += len;
adamc@1066	3218 uw_write_header(ctx, "\r\n");
adamc@741	3219
adamc@1113	3220 ctx_buf_append(ctx, "page", &ctx->page, b.data, b.size);
adamc@741	3221
adamc@741	3222 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adamc@741	3223 cl->func(cl->arg);
adamc@741	3224
adamc@741	3225 ctx->cleanup_front = ctx->cleanup;
adamc@741	3226
adamc@1065	3227 longjmp(ctx->jmp_buf, RETURN_INDIRECTLY);
adamc@1065	3228 }
adamc@1065	3229
adamc@1065	3230 __attribute__((noreturn)) void uw_redirect(uw_context ctx, uw_Basis_string url) {
adamc@1065	3231 cleanup *cl;
adamc@1066	3232 char *s;
adamc@1065	3233
adamc@1065	3234 ctx->returning_indirectly = 1;
adamc@1066	3235 buf_reset(&ctx->page);
adamc@1113	3236 ctx_buf_check(ctx, "page", &ctx->page, buf_used(&ctx->outHeaders)+1);
adamc@1066	3237 memcpy(ctx->page.start, ctx->outHeaders.start, buf_used(&ctx->outHeaders));
adamc@1066	3238 ctx->page.start[buf_used(&ctx->outHeaders)] = 0;
adamc@1065	3239 buf_reset(&ctx->outHeaders);
adamc@1065	3240
adamc@1065	3241 uw_write_header(ctx, on_redirect);
adamc@1066	3242
adamc@1066	3243 s = strchr(ctx->page.start, '\n');
adamc@1066	3244 if (s) {
adamc@1066	3245 char *s2;
adamc@1134	3246 for (++s; (s2 = strchr(s, '\n')); s = s2+1) {
adamc@1066	3247 *s2 = 0;
adamc@1066	3248 if (!strncmp(s, "Set-Cookie: ", 12)) {
adamc@1066	3249 uw_write_header(ctx, s);
adamc@1066	3250 uw_write_header(ctx, "\n");
adamc@1066	3251 }
adamc@1066	3252 }
adamc@1066	3253 }
adamc@1066	3254
adamc@1065	3255 uw_write_header(ctx, "Location: ");
adamc@1065	3256 uw_write_header(ctx, url);
adamc@1065	3257 uw_write_header(ctx, "\r\n\r\n");
adamc@1065	3258
adamc@1065	3259 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adamc@1065	3260 cl->func(cl->arg);
adamc@1065	3261
adamc@1065	3262 ctx->cleanup_front = ctx->cleanup;
adamc@1065	3263
adamc@1065	3264 longjmp(ctx->jmp_buf, RETURN_INDIRECTLY);
adamc@741	3265 }
adamc@874	3266
adamc@874	3267 uw_Basis_string uw_Basis_unAs(uw_context ctx, uw_Basis_string s) {
adamc@874	3268 uw_Basis_string r = uw_malloc(ctx, strlen(s) + 1);
adamc@874	3269
adamc@874	3270 for (; *s; ++s) {
adamc@874	3271 if (s[0] == '\'') {
adamc@874	3272 *r++ = '\'';
adamc@874	3273 for (++s; *s; ++s) {
adamc@874	3274 if (s[0] == '\'') {
adamc@874	3275 *r++ = '\'';
adamc@874	3276 break;
adamc@874	3277 } else if (s[0] == '\\') {
adamc@874	3278 if (s[1] == '\\') {
adamc@874	3279 *r++ = '\\';
adamc@874	3280 *r++ = '\\';
adamc@874	3281 ++s;
adamc@874	3282 } else if (s[1] == '\'') {
adamc@874	3283 *r++ = '\\';
adamc@874	3284 *r++ = '\'';
adamc@874	3285 ++s;
adamc@874	3286 } else
adamc@874	3287 *r++ = '\'';
adamc@874	3288 } else
adamc@874	3289 *r++ = s[0];
adamc@874	3290 }
adamc@874	3291 if (*s == 0) break;
adamc@874	3292 } else if (s[0] == 'T' && s[1] == '.')
adamc@874	3293 ++s;
adamc@874	3294 else
adamc@874	3295 *r++ = s[0];
adamc@874	3296 }
adamc@874	3297
adamc@874	3298 return r;
adamc@874	3299 }
adamc@874	3300
adamc@922	3301 uw_Basis_string uw_Basis_mstrcat(uw_context ctx, ...) {
adamc@922	3302 va_list ap;
adamc@922	3303 size_t len = 1;
adamc@922	3304 char s, r, *s2;
adamc@922	3305
adamc@922	3306 va_start(ap, ctx);
adamc@922	3307 for (s = va_arg(ap, char); s; s = va_arg(ap, char))
adamc@922	3308 len += strlen(s);
adamc@922	3309 va_end(ap);
adamc@922	3310
adamc@922	3311 r = uw_malloc(ctx, len);
adamc@922	3312 va_start(ap, ctx);
adamc@922	3313 for (s2 = r, s = va_arg(ap, char); s; s = va_arg(ap, char))
adamc@922	3314 while (*s)
adamc@922	3315 s2++ = s++;
adamc@922	3316 va_end(ap);
adamc@922	3317 *s2 = 0;
adamc@922	3318
adamc@922	3319 return r;
adamc@922	3320 }
adamc@1006	3321
adamc@1050	3322 const uw_Basis_time minTime = 0;
adamc@1050	3323
adamc@1006	3324 uw_Basis_time uw_Basis_now(uw_context ctx) {
adamc@1006	3325 return time(NULL);
adamc@1006	3326 }
adamc@1061	3327
adamc@1138	3328 uw_Basis_time uw_Basis_minusSeconds(uw_context ctx, uw_Basis_time tm, uw_Basis_int n) {
adamc@1138	3329 return tm - n;
adamc@1138	3330 }
adamc@1138	3331
adamc@1061	3332 void uw_get_global(uw_context ctx, char name) {
adamc@1061	3333 int i;
adamc@1061	3334
adamc@1061	3335 for (i = 0; i < ctx->n_globals; ++i)
adamc@1061	3336 if (!strcmp(name, ctx->globals[i].name))
adamc@1061	3337 return ctx->globals[i].data;
adamc@1061	3338
adamc@1061	3339 return NULL;
adamc@1061	3340 }
adamc@1061	3341
adamc@1113	3342 size_t uw_globals_max = SIZE_MAX;
adamc@1113	3343
adamc@1061	3344 void uw_set_global(uw_context ctx, char name, void data, void (free)(void)) {
adamc@1061	3345 int i;
adamc@1061	3346
adamc@1061	3347 for (i = 0; i < ctx->n_globals; ++i)
adamc@1061	3348 if (!strcmp(name, ctx->globals[i].name)) {
adamc@1089	3349 if (ctx->globals[i].free)
adamc@1061	3350 ctx->globals[i].free(ctx->globals[i].data);
adamc@1061	3351 ctx->globals[i].data = data;
adamc@1061	3352 ctx->globals[i].free = free;
adamc@1061	3353 return;
adamc@1061	3354 }
adamc@1089	3355
adamc@1113	3356 if (ctx->n_globals+1 > uw_globals_max)
adamc@1113	3357 uw_error(ctx, FATAL, "Exceeded limit on number of globals");
adamc@1113	3358
adamc@1061	3359 ++ctx->n_globals;
adamc@1061	3360 ctx->globals = realloc(ctx->globals, ctx->n_globals * sizeof(global));
adamc@1061	3361 ctx->globals[ctx->n_globals-1].name = name;
adamc@1061	3362 ctx->globals[ctx->n_globals-1].data = data;
adamc@1061	3363 ctx->globals[ctx->n_globals-1].free = free;
adamc@1061	3364 }
adamc@1061	3365
adamc@1061	3366 uw_Basis_bool uw_Basis_isalnum(uw_context ctx, uw_Basis_char c) {
adamc@1153	3367 return !!isalnum((int)c);
adamc@1061	3368 }
adamc@1061	3369
adamc@1061	3370 uw_Basis_bool uw_Basis_isalpha(uw_context ctx, uw_Basis_char c) {
adamc@1153	3371 return !!isalpha((int)c);
adamc@1061	3372 }
adamc@1061	3373
adamc@1061	3374 uw_Basis_bool uw_Basis_isblank(uw_context ctx, uw_Basis_char c) {
adamc@1153	3375 return !!isblank((int)c);
adamc@1061	3376 }
adamc@1061	3377
adamc@1061	3378 uw_Basis_bool uw_Basis_iscntrl(uw_context ctx, uw_Basis_char c) {
adamc@1153	3379 return !!iscntrl((int)c);
adamc@1061	3380 }
adamc@1061	3381
adamc@1061	3382 uw_Basis_bool uw_Basis_isdigit(uw_context ctx, uw_Basis_char c) {
adamc@1153	3383 return !!isdigit((int)c);
adamc@1061	3384 }
adamc@1061	3385
adamc@1061	3386 uw_Basis_bool uw_Basis_isgraph(uw_context ctx, uw_Basis_char c) {
adamc@1153	3387 return !!isgraph((int)c);
adamc@1061	3388 }
adamc@1061	3389
adamc@1061	3390 uw_Basis_bool uw_Basis_islower(uw_context ctx, uw_Basis_char c) {
adamc@1153	3391 return !!islower((int)c);
adamc@1061	3392 }
adamc@1061	3393
adamc@1061	3394 uw_Basis_bool uw_Basis_isprint(uw_context ctx, uw_Basis_char c) {
adamc@1153	3395 return !!isprint((int)c);
adamc@1061	3396 }
adamc@1061	3397
adamc@1061	3398 uw_Basis_bool uw_Basis_ispunct(uw_context ctx, uw_Basis_char c) {
adamc@1153	3399 return !!ispunct((int)c);
adamc@1061	3400 }
adamc@1061	3401
adamc@1061	3402 uw_Basis_bool uw_Basis_isspace(uw_context ctx, uw_Basis_char c) {
adamc@1153	3403 return !!isspace((int)c);
adamc@1061	3404 }
adamc@1063	3405
adamc@1061	3406 uw_Basis_bool uw_Basis_isupper(uw_context ctx, uw_Basis_char c) {
adamc@1153	3407 return !!isupper((int)c);
adamc@1061	3408 }
adamc@1061	3409
adamc@1061	3410 uw_Basis_bool uw_Basis_isxdigit(uw_context ctx, uw_Basis_char c) {
adamc@1153	3411 return !!isxdigit((int)c);
adamc@1061	3412 }
adamc@1061	3413
adamc@1061	3414 uw_Basis_char uw_Basis_tolower(uw_context ctx, uw_Basis_char c) {
adamc@1153	3415 return tolower((int)c);
adamc@1061	3416 }
adamc@1061	3417
adamc@1061	3418 uw_Basis_char uw_Basis_toupper(uw_context ctx, uw_Basis_char c) {
adamc@1153	3419 return toupper((int)c);
adamc@1061	3420 }
adamc@1066	3421
adamc@1128	3422 uw_Basis_int uw_Basis_ord(uw_context ctx, uw_Basis_char c) {
adamc@1128	3423 return (unsigned char)c;
adamc@1128	3424 }
adamc@1128	3425
adamc@1128	3426 uw_Basis_char uw_Basis_chr(uw_context ctx, uw_Basis_int n) {
adamc@1128	3427 return n;
adamc@1128	3428 }
adamc@1128	3429
adamc@1066	3430 uw_Basis_string uw_Basis_currentUrl(uw_context ctx) {
adamc@1066	3431 return ctx->current_url;
adamc@1066	3432 }
adamc@1066	3433
adamc@1066	3434 void uw_set_currentUrl(uw_context ctx, char *s) {
adamc@1066	3435 ctx->current_url = s;
adamc@1066	3436 }
adamc@1114	3437
adamc@1114	3438 void uw_set_deadline(uw_context ctx, int n) {
adamc@1114	3439 ctx->deadline = n;
adamc@1114	3440 }
adamc@1114	3441
adamc@1114	3442 void uw_check_deadline(uw_context ctx) {
adamc@1114	3443 if (uw_time > ctx->deadline)
adamc@1114	3444 uw_error(ctx, FATAL, "Maximum running time exceeded");
adamc@1114	3445 }
adamc@1115	3446
adamc@1115	3447 size_t uw_database_max = SIZE_MAX;
adamc@1120	3448
adamc@1120	3449 uw_Basis_unit uw_Basis_debug(uw_context ctx, uw_Basis_string s) {
adam@1334	3450 if (ctx->log_debug)
adam@1334	3451 ctx->log_debug(ctx->logger_data, "%s\n", s);
adam@1334	3452 else
adam@1334	3453 fprintf(stderr, "%s\n", s);
adamc@1120	3454 return uw_unit_v;
adamc@1120	3455 }
adamc@1250	3456
adamc@1250	3457 uw_Basis_int uw_Basis_rand(uw_context ctx) {
adamc@1250	3458 uw_Basis_int n = abs(rand());
adamc@1250	3459 return n;
adamc@1250	3460 }

Mercurial > urweb

annotate src/c/urweb.c @ 1340:caff0a4d5fc1