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

annotate src/c/urweb.c @ 1241:58f5ac1bb849

Check for implicit flows via expressions injected into SQL

author	Adam Chlipala <adamc@hcoop.net>
date	Thu, 15 Apr 2010 14:21:12 -0400
parents	8679ba87cf3c
children	e80582b927f2

rev	line source
adamc@117	1 #include <stdlib.h>
adamc@102	2 #include <stdio.h>
adamc@117	3 #include <string.h>
adamc@457	4 #include <strings.h>
adamc@106	5 #include <ctype.h>
adamc@167	6 #include <setjmp.h>
adamc@167	7 #include <stdarg.h>
adamc@682	8 #include <assert.h>
adamc@741	9 #include <ctype.h>
adamc@1114	10 #include <limits.h>
adamc@1113	11 #include <stdint.h>
adamc@1094	12 #include <sys/types.h>
adamc@1094	13 #include <sys/socket.h>
adamc@102	14
adamc@667	15 #include <pthread.h>
adamc@667	16
adamc@102	17 #include "types.h"
adamc@102	18
adamc@311	19 uw_unit uw_unit_v = {};
adamc@102	20
adamc@667	21
adamc@667	22 // Socket extras
adamc@667	23
adamc@863	24 int uw_really_send(int sock, const void *buf, ssize_t len) {
adamc@667	25 while (len > 0) {
adamc@856	26 ssize_t n = send(sock, buf, len, 0);
adamc@856	27
adamc@856	28 if (n < 0)
adamc@856	29 return n;
adamc@856	30
adamc@856	31 buf += n;
adamc@856	32 len -= n;
adamc@856	33 }
adamc@856	34
adamc@856	35 return 0;
adamc@856	36 }
adamc@856	37
adamc@856	38 int uw_really_write(int fd, const void *buf, size_t len) {
adamc@856	39 while (len > 0) {
adamc@856	40 ssize_t n = write(fd, buf, len);
adamc@667	41
adamc@667	42 if (n < 0)
adamc@667	43 return n;
adamc@667	44
adamc@667	45 buf += n;
adamc@667	46 len -= n;
adamc@667	47 }
adamc@667	48
adamc@667	49 return 0;
adamc@667	50 }
adamc@667	51
adamc@667	52
adamc@667	53 // Buffers
adamc@667	54
adamc@667	55 typedef struct {
adamc@1113	56 size_t max;
adamc@667	57 char start, front, *back;
adamc@667	58 } buf;
adamc@667	59
adamc@1113	60 static void buf_init(size_t max, buf *b, size_t s) {
adamc@1113	61 b->max = max;
adamc@667	62 b->front = b->start = malloc(s);
adamc@667	63 b->back = b->front + s;
adamc@667	64 }
adamc@667	65
adamc@667	66 static void buf_free(buf *b) {
adamc@667	67 free(b->start);
adamc@667	68 }
adamc@667	69
adamc@667	70 static void buf_reset(buf *b) {
adamc@667	71 b->front = b->start;
adamc@667	72 }
adamc@667	73
adamc@1113	74 static int buf_check(buf *b, size_t extra) {
adamc@667	75 if (b->back - b->front < extra) {
adamc@667	76 size_t desired = b->front - b->start + extra, next;
adamc@667	77 char *new_heap;
adamc@667	78
adamc@667	79 next = b->back - b->start;
adamc@667	80 if (next == 0)
adamc@667	81 next = 1;
adamc@667	82 for (; next < desired; next *= 2);
adamc@667	83
adamc@1134	84 if (next > b->max) {
adamc@1113	85 if (desired <= b->max)
adamc@1113	86 next = desired;
adamc@1113	87 else
adamc@1113	88 return 1;
adamc@1134	89 }
adamc@1113	90
adamc@667	91 new_heap = realloc(b->start, next);
adamc@667	92 b->front = new_heap + (b->front - b->start);
adamc@667	93 b->back = new_heap + next;
adamc@667	94 b->start = new_heap;
adamc@667	95 }
adamc@1113	96
adamc@1113	97 return 0;
adamc@1113	98 }
adamc@1113	99
adamc@1113	100 __attribute__((noreturn)) void uw_error(uw_context, failure_kind, const char *, ...);
adamc@1113	101
adamc@1113	102 static void ctx_buf_check(uw_context ctx, const char kind, buf b, size_t extra) {
adamc@1113	103 if (buf_check(b, extra))
adamc@1113	104 uw_error(ctx, FATAL, "Memory limit exceeded (%s)", kind);
adamc@667	105 }
adamc@667	106
adamc@667	107 static size_t buf_used(buf *b) {
adamc@667	108 return b->front - b->start;
adamc@667	109 }
adamc@667	110
adamc@667	111 static size_t buf_avail(buf *b) {
adamc@667	112 return b->back - b->start;
adamc@667	113 }
adamc@667	114
adamc@1113	115 static int buf_append(buf b, const char s, size_t len) {
adamc@1113	116 if (buf_check(b, len+1))
adamc@1113	117 return 1;
adamc@1113	118
adamc@1113	119 memcpy(b->front, s, len);
adamc@1113	120 b->front += len;
adamc@1113	121 *b->front = 0;
adamc@1113	122
adamc@1113	123 return 0;
adamc@1113	124 }
adamc@1113	125
adamc@1113	126 static void ctx_buf_append(uw_context ctx, const char kind, buf b, const char *s, size_t len) {
adamc@1113	127 ctx_buf_check(ctx, kind, b, len+1);
adamc@1113	128
adamc@668	129 memcpy(b->front, s, len);
adamc@668	130 b->front += len;
adamc@672	131 *b->front = 0;
adamc@668	132 }
adamc@667	133
adamc@668	134
adamc@672	135 // Persistent state types
adamc@667	136
adamc@667	137 typedef enum { UNUSED, USED } usage;
adamc@667	138
adamc@667	139 typedef struct client {
adamc@682	140 unsigned id;
adamc@667	141 usage mode;
adamc@682	142 int pass;
adamc@682	143 struct client *next;
adamc@689	144 pthread_mutex_t lock, pull_lock;
adamc@682	145 buf msgs;
adamc@682	146 int sock;
adamc@863	147 int (send)(int sockfd, const void buf, ssize_t len);
adamc@863	148 int (*close)(int fd);
adamc@682	149 time_t last_contact;
adamc@682	150 unsigned n_channels;
adamc@685	151 unsigned refcount;
adamc@1121	152 void *data;
adamc@667	153 } client;
adamc@667	154
adamc@672	155
adamc@672	156 // Persistent client state
adamc@672	157
adamc@682	158 static client *clients, clients_free, *clients_used;
adamc@682	159 static unsigned n_clients;
adamc@667	160
adamc@667	161 static pthread_mutex_t clients_mutex = PTHREAD_MUTEX_INITIALIZER;
adamc@667	162
adamc@1113	163 size_t uw_messages_max = SIZE_MAX;
adamc@1113	164 size_t uw_clients_max = SIZE_MAX;
adamc@1113	165
adamc@1121	166 void *uw_init_client_data();
adamc@1121	167 void uw_free_client_data(void *);
adamc@1121	168 void uw_copy_client_data(void dst, void src);
adamc@1121	169
adamc@682	170 static client *new_client() {
adamc@667	171 client *c;
adamc@667	172
adamc@667	173 pthread_mutex_lock(&clients_mutex);
adamc@667	174
adamc@667	175 if (clients_free) {
adamc@667	176 c = clients_free;
adamc@682	177 clients_free = clients_free->next;
adamc@667	178 }
adamc@1113	179 else if (n_clients >= uw_clients_max)
adamc@1113	180 return NULL;
adamc@667	181 else {
adamc@667	182 ++n_clients;
adamc@667	183 clients = realloc(clients, sizeof(client) * n_clients);
adamc@667	184 c = malloc(sizeof(client));
adamc@667	185 c->id = n_clients-1;
adamc@682	186 pthread_mutex_init(&c->lock, NULL);
adamc@689	187 pthread_mutex_init(&c->pull_lock, NULL);
adamc@1113	188 buf_init(uw_messages_max, &c->msgs, 0);
adamc@667	189 clients[n_clients-1] = c;
adamc@667	190 }
adamc@667	191
adamc@682	192 pthread_mutex_lock(&c->lock);
adamc@667	193 c->mode = USED;
adamc@682	194 c->pass = rand();
adamc@682	195 c->sock = -1;
adamc@682	196 c->last_contact = time(NULL);
adamc@682	197 buf_reset(&c->msgs);
adamc@682	198 c->n_channels = 0;
adamc@685	199 c->refcount = 0;
adamc@1121	200 c->data = uw_init_client_data();
adamc@682	201 pthread_mutex_unlock(&c->lock);
adamc@682	202
adamc@682	203 c->next = clients_used;
adamc@682	204 clients_used = c;
adamc@667	205
adamc@667	206 pthread_mutex_unlock(&clients_mutex);
adamc@667	207
adamc@667	208 return c;
adamc@667	209 }
adamc@667	210
adamc@685	211 static void use_client(client *c) {
adamc@685	212 pthread_mutex_lock(&c->lock);
adamc@685	213 ++c->refcount;
adamc@685	214 pthread_mutex_unlock(&c->lock);
adamc@689	215 pthread_mutex_lock(&c->pull_lock);
adamc@685	216 }
adamc@685	217
adamc@685	218 static void release_client(client *c) {
adamc@689	219 pthread_mutex_unlock(&c->pull_lock);
adamc@685	220 pthread_mutex_lock(&c->lock);
adamc@685	221 --c->refcount;
adamc@685	222 pthread_mutex_unlock(&c->lock);
adamc@689	223
adamc@685	224 }
adamc@685	225
adamc@856	226 static const char begin_msgs[] = "Content-type: text/plain\r\n\r\n";
adamc@667	227
adamc@682	228 static client *find_client(unsigned id) {
adamc@667	229 client *c;
adamc@667	230
adamc@667	231 pthread_mutex_lock(&clients_mutex);
adamc@667	232
adamc@667	233 if (id >= n_clients) {
adamc@667	234 pthread_mutex_unlock(&clients_mutex);
adamc@668	235 return NULL;
adamc@667	236 }
adamc@667	237
adamc@667	238 c = clients[id];
adamc@667	239
adamc@668	240 pthread_mutex_unlock(&clients_mutex);
adamc@668	241 return c;
adamc@668	242 }
adamc@668	243
adamc@856	244 static char *on_success = "HTTP/1.1 200 OK\r\n";
adamc@1065	245 static char *on_redirect = "HTTP/1.1 303 See Other\r\n";
adamc@856	246
adamc@856	247 void uw_set_on_success(char *s) {
adamc@856	248 on_success = s;
adamc@856	249 }
adamc@856	250
adamc@863	251 void uw_client_connect(unsigned id, int pass, int sock,
adamc@863	252 int (send)(int sockfd, const void buf, ssize_t len),
adamc@864	253 int (*close)(int fd),
adamc@864	254 void *logger_data, uw_logger log_error) {
adamc@682	255 client *c = find_client(id);
adamc@668	256
adamc@668	257 if (c == NULL) {
adamc@667	258 close(sock);
adamc@864	259 log_error(logger_data, "Out-of-bounds client request (%u)\n", id);
adamc@667	260 return;
adamc@667	261 }
adamc@667	262
adamc@682	263 pthread_mutex_lock(&c->lock);
adamc@671	264
adamc@682	265 if (c->mode != USED) {
adamc@682	266 pthread_mutex_unlock(&c->lock);
adamc@667	267 close(sock);
adamc@864	268 log_error(logger_data, "Client request for unused slot (%u)\n", id);
adamc@667	269 return;
adamc@667	270 }
adamc@667	271
adamc@682	272 if (pass != c->pass) {
adamc@682	273 pthread_mutex_unlock(&c->lock);
adamc@682	274 close(sock);
adamc@864	275 log_error(logger_data, "Wrong client password (%u, %d)\n", id, pass);
adamc@682	276 return;
adamc@667	277 }
adamc@667	278
adamc@682	279 if (c->sock != -1) {
adamc@863	280 c->close(c->sock);
adamc@682	281 c->sock = -1;
adamc@682	282 }
adamc@667	283
adamc@682	284 c->last_contact = time(NULL);
adamc@682	285
adamc@682	286 if (buf_used(&c->msgs) > 0) {
adamc@863	287 send(sock, on_success, strlen(on_success));
adamc@863	288 send(sock, begin_msgs, sizeof(begin_msgs) - 1);
adamc@863	289 send(sock, c->msgs.start, buf_used(&c->msgs));
adamc@682	290 buf_reset(&c->msgs);
adamc@667	291 close(sock);
adamc@667	292 }
adamc@863	293 else {
adamc@682	294 c->sock = sock;
adamc@863	295 c->send = send;
adamc@863	296 c->close = close;
adamc@863	297 }
adamc@667	298
adamc@682	299 pthread_mutex_unlock(&c->lock);
adamc@667	300 }
adamc@667	301
adamc@682	302 static void free_client(client *c) {
adamc@682	303 c->mode = UNUSED;
adamc@682	304 c->pass = -1;
adamc@667	305
adamc@682	306 c->next = clients_free;
adamc@682	307 clients_free = c;
adamc@667	308 }
adamc@667	309
adamc@682	310 static uw_Basis_channel new_channel(client *c) {
adamc@682	311 uw_Basis_channel ch = {c->id, c->n_channels++};
adamc@668	312 return ch;
adamc@668	313 }
adamc@668	314
adamc@685	315 static void client_send(client c, buf msg) {
adamc@685	316 pthread_mutex_lock(&c->lock);
adamc@671	317
adamc@682	318 if (c->sock != -1) {
adamc@863	319 c->send(c->sock, on_success, strlen(on_success));
adamc@863	320 c->send(c->sock, begin_msgs, sizeof(begin_msgs) - 1);
adamc@863	321 c->send(c->sock, msg->start, buf_used(msg));
adamc@863	322 c->close(c->sock);
adamc@682	323 c->sock = -1;
adamc@1113	324 } else if (buf_append(&c->msgs, msg->start, buf_used(msg)))
adamc@1113	325 fprintf(stderr, "Client message buffer size exceeded");
adamc@671	326
adamc@685	327 pthread_mutex_unlock(&c->lock);
adamc@668	328 }
adamc@668	329
adamc@668	330
adamc@668	331 // Global entry points
adamc@668	332
adamc@1164	333 extern void uw_global_custom();
adamc@1104	334 extern void uw_init_crypto();
adamc@1104	335
adamc@668	336 void uw_global_init() {
adamc@668	337 srand(time(NULL) ^ getpid());
adamc@668	338
adamc@668	339 clients = malloc(0);
adamc@1104	340
adamc@1164	341 uw_global_custom();
adamc@1104	342 uw_init_crypto();
adamc@1094	343 }
adamc@1094	344
adamc@1094	345 void uw_app_init(uw_app *app) {
adamc@1094	346 app->client_init();
adamc@668	347 }
adamc@668	348
adamc@1114	349 int uw_time = 0;
adamc@1114	350
adamc@668	351
adamc@667	352 // Single-request state
adamc@667	353
adamc@167	354 #define ERROR_BUF_LEN 1024
adamc@167	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;
adamc@771	393 uw_callback commit, rollback, free;
adamc@771	394 } transactional;
adamc@771	395
adamc@1061	396 typedef struct {
adamc@1061	397 char *name;
adamc@1061	398 void *data;
adamc@1061	399 void (free)(void);
adamc@1061	400 } global;
adamc@1061	401
adamc@311	402 struct uw_context {
adamc@1094	403 uw_app *app;
adamc@1094	404
adamc@854	405 char (get_header)(void , const char );
adamc@854	406 void *get_header_data;
adamc@457	407
adamc@666	408 buf outHeaders, page, heap, script;
adamc@1065	409 int returning_indirectly;
adamc@759	410 input inputs, subinputs, *cur_container;
adamc@1094	411 size_t sz_inputs, n_subinputs, used_subinputs;
adamc@167	412
adamc@565	413 int source_count;
adamc@562	414
adamc@272	415 void *db;
adamc@272	416
adamc@167	417 jmp_buf jmp_buf;
adamc@167	418
adamc@323	419 regions *regions;
adamc@323	420
adamc@425	421 cleanup cleanup, cleanup_front, *cleanup_back;
adamc@425	422
adamc@1094	423 const char *script_header;
adamc@643	424
adamc@736	425 int needs_push, needs_sig;
adamc@693	426
adamc@682	427 size_t n_deltas, used_deltas;
adamc@682	428 delta *deltas;
adamc@671	429
adamc@682	430 client *client;
adamc@682	431
adamc@771	432 transactional *transactionals;
adamc@771	433 size_t n_transactionals, used_transactionals;
adamc@771	434
adamc@1061	435 global *globals;
adamc@1061	436 size_t n_globals;
adamc@1061	437
adamc@1066	438 char *current_url;
adamc@1066	439
adamc@1114	440 int deadline;
adamc@1114	441
adamc@1121	442 void *client_data;
adamc@1121	443
adamc@167	444 char error_message[ERROR_BUF_LEN];
adamc@117	445 };
adamc@117	446
adamc@1113	447 size_t uw_headers_max = SIZE_MAX;
adamc@1113	448 size_t uw_page_max = SIZE_MAX;
adamc@1113	449 size_t uw_heap_max = SIZE_MAX;
adamc@1113	450 size_t uw_script_max = SIZE_MAX;
adamc@1113	451
adamc@687	452 uw_context uw_init() {
adamc@311	453 uw_context ctx = malloc(sizeof(struct uw_context));
adamc@136	454
adamc@1094	455 ctx->app = NULL;
adamc@1094	456
adamc@854	457 ctx->get_header = NULL;
adamc@854	458 ctx->get_header_data = NULL;
adamc@457	459
adamc@1113	460 buf_init(uw_headers_max, &ctx->outHeaders, 0);
adamc@1113	461 buf_init(uw_page_max, &ctx->page, 0);
adamc@1065	462 ctx->returning_indirectly = 0;
adamc@1113	463 buf_init(uw_heap_max, &ctx->heap, 0);
adamc@1113	464 buf_init(uw_script_max, &ctx->script, 1);
adamc@667	465 ctx->script.start[0] = 0;
adamc@136	466
adamc@1094	467 ctx->inputs = malloc(0);
adamc@759	468 ctx->cur_container = NULL;
adamc@756	469 ctx->subinputs = malloc(0);
adamc@1094	470 ctx->sz_inputs = ctx->n_subinputs = ctx->used_subinputs = 0;
adamc@144	471
adamc@272	472 ctx->db = NULL;
adamc@272	473
adamc@323	474 ctx->regions = NULL;
adamc@323	475
adamc@425	476 ctx->cleanup_front = ctx->cleanup_back = ctx->cleanup = malloc(0);
adamc@425	477
adamc@643	478 ctx->script_header = "";
adamc@693	479 ctx->needs_push = 0;
adamc@736	480 ctx->needs_sig = 0;
adamc@1104	481
adamc@565	482 ctx->source_count = 0;
adamc@562	483
adamc@682	484 ctx->n_deltas = ctx->used_deltas = 0;
adamc@671	485 ctx->deltas = malloc(0);
adamc@671	486
adamc@700	487 ctx->client = NULL;
adamc@700	488
adamc@700	489 ctx->error_message[0] = 0;
adamc@700	490
adamc@771	491 ctx->transactionals = malloc(0);
adamc@771	492 ctx->n_transactionals = ctx->used_transactionals = 0;
adamc@771	493
adamc@1061	494 ctx->globals = malloc(0);
adamc@1061	495 ctx->n_globals = 0;
adamc@1061	496
adamc@1066	497 ctx->current_url = "";
adamc@1066	498
adamc@1114	499 ctx->deadline = INT_MAX;
adamc@1114	500
adamc@1121	501 ctx->client_data = uw_init_client_data();
adamc@1121	502
adamc@117	503 return ctx;
adamc@106	504 }
adamc@106	505
adamc@1113	506 size_t uw_inputs_max = SIZE_MAX;
adamc@1113	507
adamc@1121	508 uw_app *uw_get_app(uw_context ctx) {
adamc@1121	509 return ctx->app;
adamc@1121	510 }
adamc@1121	511
adamc@1113	512 int uw_set_app(uw_context ctx, uw_app *app) {
adamc@1094	513 ctx->app = app;
adamc@1094	514
adamc@1105	515 if (app && app->inputs_len > ctx->sz_inputs) {
adamc@1113	516 if (app->inputs_len > uw_inputs_max)
adamc@1113	517 return 1;
adamc@1113	518
adamc@1094	519 ctx->sz_inputs = app->inputs_len;
adamc@1094	520 ctx->inputs = realloc(ctx->inputs, ctx->sz_inputs * sizeof(input));
adamc@1094	521 memset(ctx->inputs, 0, ctx->sz_inputs * sizeof(input));
adamc@1094	522 }
adamc@1134	523
adamc@1134	524 return 0;
adamc@1094	525 }
adamc@1094	526
adamc@1121	527 void uw_set_client_data(uw_context ctx, void *data) {
adamc@1121	528 uw_copy_client_data(ctx->client_data, data);
adamc@1121	529 }
adamc@1121	530
adamc@311	531 void uw_set_db(uw_context ctx, void *db) {
adamc@272	532 ctx->db = db;
adamc@272	533 }
adamc@272	534
adamc@311	535 void *uw_get_db(uw_context ctx) {
adamc@272	536 return ctx->db;
adamc@272	537 }
adamc@272	538
adamc@311	539 void uw_free(uw_context ctx) {
adamc@671	540 size_t i;
adamc@671	541
adamc@666	542 buf_free(&ctx->outHeaders);
adamc@666	543 buf_free(&ctx->script);
adamc@666	544 buf_free(&ctx->page);
adamc@666	545 buf_free(&ctx->heap);
adamc@144	546 free(ctx->inputs);
adamc@756	547 free(ctx->subinputs);
adamc@425	548 free(ctx->cleanup);
adamc@771	549 free(ctx->transactionals);
adamc@1121	550 uw_free_client_data(ctx->client_data);
adamc@671	551
adamc@682	552 for (i = 0; i < ctx->n_deltas; ++i)
adamc@671	553 buf_free(&ctx->deltas[i].msgs);
adamc@671	554
adamc@1061	555 for (i = 0; i < ctx->n_globals; ++i)
adamc@1089	556 if (ctx->globals[i].free)
adamc@1089	557 ctx->globals[i].free(ctx->globals[i].data);
adamc@1061	558
adamc@136	559 free(ctx);
adamc@136	560 }
adamc@136	561
adamc@562	562 void uw_reset_keep_error_message(uw_context ctx) {
adamc@666	563 buf_reset(&ctx->outHeaders);
adamc@666	564 buf_reset(&ctx->script);
adamc@667	565 ctx->script.start[0] = 0;
adamc@666	566 buf_reset(&ctx->page);
adamc@1065	567 ctx->returning_indirectly = 0;
adamc@666	568 buf_reset(&ctx->heap);
adamc@323	569 ctx->regions = NULL;
adamc@425	570 ctx->cleanup_front = ctx->cleanup;
adamc@565	571 ctx->source_count = 0;
adamc@682	572 ctx->used_deltas = 0;
adamc@682	573 ctx->client = NULL;
adamc@759	574 ctx->cur_container = NULL;
adamc@771	575 ctx->used_transactionals = 0;
adamc@1117	576 ctx->script_header = "";
adamc@167	577 }
adamc@167	578
adamc@562	579 void uw_reset_keep_request(uw_context ctx) {
adamc@562	580 uw_reset_keep_error_message(ctx);
adamc@562	581 ctx->error_message[0] = 0;
adamc@167	582 }
adamc@167	583
adamc@311	584 void uw_reset(uw_context ctx) {
adamc@311	585 uw_reset_keep_request(ctx);
adamc@1105	586 if (ctx->app)
adamc@1105	587 memset(ctx->inputs, 0, ctx->app->inputs_len * sizeof(input));
adamc@756	588 memset(ctx->subinputs, 0, ctx->n_subinputs * sizeof(input));
adamc@756	589 ctx->used_subinputs = 0;
adamc@144	590 }
adamc@144	591
adamc@311	592 failure_kind uw_begin_init(uw_context ctx) {
adamc@272	593 int r = setjmp(ctx->jmp_buf);
adamc@272	594
adamc@1105	595 if (r == 0 && ctx->app)
adamc@1094	596 ctx->app->db_init(ctx);
adamc@272	597
adamc@272	598 return r;
adamc@272	599 }
adamc@272	600
adamc@1118	601 void uw_close(uw_context ctx) {
adamc@1118	602 ctx->app->db_close(ctx);
adamc@1118	603 }
adamc@1118	604
adamc@854	605 void uw_set_headers(uw_context ctx, char (get_header)(void , const char ), void *get_header_data) {
adamc@854	606 ctx->get_header = get_header;
adamc@854	607 ctx->get_header_data = get_header_data;
adamc@742	608 }
adamc@742	609
adamc@801	610 static void uw_set_error(uw_context ctx, const char *fmt, ...) {
adamc@801	611 va_list ap;
adamc@801	612 va_start(ap, fmt);
adamc@801	613
adamc@801	614 vsnprintf(ctx->error_message, ERROR_BUF_LEN, fmt, ap);
adamc@801	615 }
adamc@801	616
adamc@1131	617 int uw_has_error(uw_context ctx) {
adamc@1131	618 return ctx->error_message[0] != 0;
adamc@1131	619 }
adamc@1131	620
adamc@311	621 __attribute__((noreturn)) void uw_error(uw_context ctx, failure_kind fk, const char *fmt, ...) {
adamc@425	622 cleanup *cl;
adamc@425	623
adamc@167	624 va_list ap;
adamc@167	625 va_start(ap, fmt);
adamc@167	626
adamc@167	627 vsnprintf(ctx->error_message, ERROR_BUF_LEN, fmt, ap);
adamc@167	628
adamc@425	629 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adamc@425	630 cl->func(cl->arg);
adamc@425	631
adamc@425	632 ctx->cleanup_front = ctx->cleanup;
adamc@425	633
adamc@190	634 longjmp(ctx->jmp_buf, fk);
adamc@167	635 }
adamc@167	636
adamc@1113	637 size_t uw_cleanup_max = SIZE_MAX;
adamc@1113	638
adamc@425	639 void uw_push_cleanup(uw_context ctx, void (func)(void ), void *arg) {
adamc@425	640 if (ctx->cleanup_front >= ctx->cleanup_back) {
adamc@425	641 int len = ctx->cleanup_back - ctx->cleanup, newLen;
adamc@425	642 if (len == 0)
adamc@425	643 newLen = 1;
adamc@425	644 else
adamc@428	645 newLen = len * 2;
adamc@1113	646
adamc@1134	647 if (newLen > uw_cleanup_max) {
adamc@1113	648 if (len+1 <= uw_cleanup_max)
adamc@1113	649 newLen = uw_cleanup_max;
adamc@1113	650 else
adamc@1113	651 uw_error(ctx, FATAL, "Exceeded limit on number of cleanup handlers");
adamc@1134	652 }
adamc@1113	653
adamc@470	654 ctx->cleanup = realloc(ctx->cleanup, newLen * sizeof(cleanup));
adamc@425	655 ctx->cleanup_front = ctx->cleanup + len;
adamc@425	656 ctx->cleanup_back = ctx->cleanup + newLen;
adamc@425	657 }
adamc@425	658
adamc@425	659 ctx->cleanup_front->func = func;
adamc@425	660 ctx->cleanup_front->arg = arg;
adamc@425	661 ++ctx->cleanup_front;
adamc@425	662 }
adamc@425	663
adamc@682	664 uw_Basis_string uw_Basis_requestHeader(uw_context ctx, uw_Basis_string h) {
adamc@854	665 return ctx->get_header(ctx->get_header_data, h);
adamc@682	666 }
adamc@682	667
adamc@682	668 void uw_login(uw_context ctx) {
adamc@693	669 if (ctx->needs_push) {
adamc@682	670 char id_s, pass_s;
adamc@682	671
adamc@682	672 if ((id_s = uw_Basis_requestHeader(ctx, "UrWeb-Client"))
adamc@682	673 && (pass_s = uw_Basis_requestHeader(ctx, "UrWeb-Pass"))) {
adamc@682	674 unsigned id = atoi(id_s);
adamc@682	675 int pass = atoi(pass_s);
adamc@682	676 client *c = find_client(id);
adamc@682	677
adamc@682	678 if (c == NULL)
adamc@682	679 uw_error(ctx, FATAL, "Unknown client ID in HTTP headers (%s, %s)", id_s, pass_s);
adamc@682	680 else {
adamc@685	681 use_client(c);
adamc@682	682 ctx->client = c;
adamc@682	683
adamc@682	684 if (c->mode != USED)
adamc@682	685 uw_error(ctx, FATAL, "Stale client ID (%u) in subscription request", id);
adamc@682	686 if (c->pass != pass)
adamc@682	687 uw_error(ctx, FATAL, "Wrong client password (%u, %d) in subscription request", id, pass);
adamc@682	688 }
adamc@682	689 } else {
adamc@682	690 client *c = new_client();
adamc@1113	691
adamc@1113	692 if (c == NULL)
adamc@1113	693 uw_error(ctx, FATAL, "Limit exceeded on number of message-passing clients");
adamc@1113	694
adamc@685	695 use_client(c);
adamc@1121	696 uw_copy_client_data(c->data, ctx->client_data);
adamc@682	697 ctx->client = c;
adamc@864	698 }
adamc@682	699 }
adamc@682	700 }
adamc@682	701
adamc@671	702 failure_kind uw_begin(uw_context ctx, char *path) {
adamc@671	703 int r = setjmp(ctx->jmp_buf);
adamc@671	704
adamc@671	705 if (r == 0) {
adamc@1094	706 if (ctx->app->db_begin(ctx))
adamc@671	707 uw_error(ctx, BOUNDED_RETRY, "Error running SQL BEGIN");
adamc@682	708
adamc@1094	709 ctx->app->handle(ctx, path);
adamc@671	710 }
adamc@671	711
adamc@671	712 return r;
adamc@671	713 }
adamc@671	714
adamc@772	715 uw_Basis_client uw_Basis_self(uw_context ctx) {
adamc@682	716 if (ctx->client == NULL)
adamc@682	717 uw_error(ctx, FATAL, "Call to Basis.self() from page that has only server-side code");
adamc@682	718
adamc@682	719 return ctx->client->id;
adamc@682	720 }
adamc@682	721
adamc@425	722 void uw_pop_cleanup(uw_context ctx) {
adamc@425	723 if (ctx->cleanup_front == ctx->cleanup)
adamc@425	724 uw_error(ctx, FATAL, "Attempt to pop from empty cleanup action stack");
adamc@425	725
adamc@425	726 --ctx->cleanup_front;
adamc@425	727 ctx->cleanup_front->func(ctx->cleanup_front->arg);
adamc@425	728 }
adamc@425	729
adamc@311	730 char *uw_error_message(uw_context ctx) {
adamc@167	731 return ctx->error_message;
adamc@167	732 }
adamc@167	733
adamc@1115	734 void uw_set_error_message(uw_context ctx, const char *msg) {
adamc@1115	735 strncpy(ctx->error_message, msg, sizeof(ctx->error_message));
adamc@1115	736 ctx->error_message[sizeof(ctx->error_message)-1] = 0;
adamc@1115	737 }
adamc@1115	738
adamc@759	739 static input *INP(uw_context ctx) {
adamc@759	740 if (ctx->cur_container == NULL)
adamc@759	741 return ctx->inputs;
adamc@759	742 else if (ctx->cur_container->kind == SUBFORM)
adamc@759	743 return ctx->cur_container->data.subform.fields;
adamc@759	744 else if (ctx->cur_container->kind == ENTRY)
adamc@759	745 return ctx->cur_container->data.entry.fields;
adamc@759	746 else
adamc@760	747 uw_error(ctx, FATAL, "INP: Wrong kind (%d, %p)", ctx->cur_container->kind, ctx->cur_container);
adamc@759	748 }
adamc@759	749
adamc@760	750 static void adjust_pointer(input *ptr, input old_start, input *new_start, size_t len) {
adamc@760	751 if (ptr != NULL && ptr >= old_start && *ptr < old_start + len)
adamc@760	752 *ptr += new_start - old_start;
adamc@760	753 }
adamc@760	754
adamc@760	755 static void adjust_input(input x, input old_start, input *new_start, size_t len) {
adamc@759	756 switch (x->kind) {
adamc@759	757 case SUBFORM:
adamc@760	758 adjust_pointer(&x->data.subform.fields, old_start, new_start, len);
adamc@760	759 adjust_pointer(&x->data.subform.parent, old_start, new_start, len);
adamc@759	760 break;
adamc@759	761 case SUBFORMS:
adamc@760	762 adjust_pointer(&x->data.subforms.entries, old_start, new_start, len);
adamc@760	763 adjust_pointer(&x->data.subforms.parent, old_start, new_start, len);
adamc@759	764 break;
adamc@759	765 case ENTRY:
adamc@760	766 adjust_pointer(&x->data.entry.fields, old_start, new_start, len);
adamc@760	767 adjust_pointer(&x->data.entry.next, old_start, new_start, len);
adamc@760	768 adjust_pointer(&x->data.entry.parent, old_start, new_start, len);
adamc@1134	769 break;
adamc@1134	770 default:
adamc@1134	771 break;
adamc@759	772 }
adamc@759	773 }
adamc@759	774
adamc@1113	775 size_t uw_subinputs_max = SIZE_MAX;
adamc@1113	776
adamc@759	777 static input *check_input_space(uw_context ctx, size_t len) {
adamc@759	778 size_t i;
adamc@759	779 input *r;
adamc@759	780
adamc@759	781 if (ctx->used_subinputs + len >= ctx->n_subinputs) {
adamc@1113	782 if (ctx->used_subinputs + len > uw_subinputs_max)
adamc@1113	783 uw_error(ctx, FATAL, "Exceeded limit on number of subinputs");
adamc@1113	784
adamc@759	785 input new_subinputs = realloc(ctx->subinputs, sizeof(input) (ctx->used_subinputs + len));
adamc@759	786
adamc@760	787 if (ctx->subinputs != new_subinputs) {
adamc@760	788 for (i = 0; i < ctx->used_subinputs; ++i)
adamc@760	789 adjust_input(&new_subinputs[i], ctx->subinputs, new_subinputs, ctx->used_subinputs);
adamc@1094	790 for (i = 0; i < ctx->app->inputs_len; ++i)
adamc@760	791 adjust_input(&ctx->inputs[i], ctx->subinputs, new_subinputs, ctx->used_subinputs);
adamc@760	792
adamc@760	793 adjust_pointer(&ctx->cur_container, ctx->subinputs, new_subinputs, ctx->used_subinputs);
adamc@760	794
adamc@760	795 ctx->n_subinputs = ctx->used_subinputs + len;
adamc@760	796 ctx->subinputs = new_subinputs;
adamc@760	797 }
adamc@759	798 }
adamc@759	799
adamc@759	800 r = &ctx->subinputs[ctx->used_subinputs];
adamc@759	801
adamc@759	802 for (i = 0; i < len; ++i)
adamc@759	803 ctx->subinputs[ctx->used_subinputs++].kind = UNUSED;
adamc@759	804
adamc@759	805 return r;
adamc@759	806 }
adamc@756	807
adamc@801	808 int uw_set_input(uw_context ctx, const char name, char value) {
adamc@1050	809 //printf("Input name %s\n", name);
adamc@1038	810
adamc@756	811 if (!strcasecmp(name, ".b")) {
adamc@1094	812 int n = ctx->app->input_num(value);
adamc@756	813 input *inps;
adamc@756	814
adamc@801	815 if (n < 0) {
adamc@801	816 uw_set_error(ctx, "Bad subform name %s", value);
adamc@801	817 return -1;
adamc@801	818 }
adamc@801	819
adamc@1094	820 if (n >= ctx->app->inputs_len) {
adamc@801	821 uw_set_error(ctx, "For subform name %s, index %d is out of range", value, n);
adamc@801	822 return -1;
adamc@801	823 }
adamc@756	824
adamc@1094	825 inps = check_input_space(ctx, ctx->app->inputs_len);
adamc@759	826
adamc@759	827 INP(ctx)[n].kind = SUBFORM;
adamc@759	828 INP(ctx)[n].data.subform.parent = ctx->cur_container;
adamc@759	829 INP(ctx)[n].data.subform.fields = inps;
adamc@759	830 ctx->cur_container = &INP(ctx)[n];
adamc@756	831 } else if (!strcasecmp(name, ".e")) {
adamc@756	832 input *tmp;
adamc@756	833
adamc@801	834 if (ctx->cur_container == NULL) {
adamc@801	835 uw_set_error(ctx, "Unmatched subform closer");
adamc@801	836 return -1;
adamc@801	837 }
adamc@756	838
adamc@759	839 tmp = ctx->cur_container;
adamc@759	840 switch (tmp->kind) {
adamc@759	841 case SUBFORM:
adamc@759	842 ctx->cur_container = tmp->data.subform.parent;
adamc@759	843 tmp->data.subform.parent = NULL;
adamc@759	844 break;
adamc@759	845 case SUBFORMS:
adamc@759	846 ctx->cur_container = tmp->data.subforms.parent;
adamc@759	847 tmp->data.subforms.parent = NULL;
adamc@759	848 break;
adamc@759	849 case ENTRY:
adamc@759	850 ctx->cur_container = tmp->data.entry.parent;
adamc@759	851 break;
adamc@759	852 default:
adamc@801	853 uw_set_error(ctx, "uw_set_input: Wrong kind");
adamc@801	854 return -1;
adamc@759	855 }
adamc@759	856 } else if (!strcasecmp(name, ".s")) {
adamc@1094	857 int n = ctx->app->input_num(value);
adamc@759	858
adamc@801	859 if (n < 0) {
adamc@801	860 uw_set_error(ctx, "Bad subforms name %s", value);
adamc@801	861 return -1;
adamc@801	862 }
adamc@801	863
adamc@1094	864 if (n >= ctx->app->inputs_len) {
adamc@801	865 uw_set_error(ctx, "For subforms name %s, index %d is out of range", value, n);
adamc@801	866 return -1;
adamc@801	867 }
adamc@759	868
adamc@759	869 INP(ctx)[n].kind = SUBFORMS;
adamc@759	870 INP(ctx)[n].data.subforms.parent = ctx->cur_container;
adamc@759	871 INP(ctx)[n].data.subforms.entries = NULL;
adamc@759	872 ctx->cur_container = &INP(ctx)[n];
adamc@759	873 } else if (!strcasecmp(name, ".i")) {
adamc@759	874 input *inps;
adamc@759	875
adamc@801	876 if (!ctx->cur_container) {
adamc@801	877 uw_set_error(ctx, "New entry without container");
adamc@801	878 return -1;
adamc@801	879 }
adamc@801	880
adamc@801	881 if (ctx->cur_container->kind != SUBFORMS) {
adamc@801	882 uw_set_error(ctx, "Bad kind for entry parent");
adamc@801	883 return -1;
adamc@801	884 }
adamc@759	885
adamc@1094	886 inps = check_input_space(ctx, ctx->app->inputs_len + 1);
adamc@759	887
adamc@759	888 inps->kind = ENTRY;
adamc@759	889 inps->data.entry.parent = ctx->cur_container;
adamc@759	890 inps->data.entry.next = ctx->cur_container->data.subforms.entries;
adamc@759	891 ctx->cur_container->data.subforms.entries = inps;
adamc@759	892
adamc@759	893 inps->data.entry.fields = inps+1;
adamc@759	894 ctx->cur_container = inps;
adamc@756	895 } else {
adamc@1094	896 int n = ctx->app->input_num(name);
adamc@756	897
adamc@801	898 if (n < 0) {
adamc@1038	899 if (!strcmp(name, "null"))
adamc@1038	900 return 0;
adamc@801	901 uw_set_error(ctx, "Bad input name %s", name);
adamc@801	902 return -1;
adamc@801	903 }
adamc@801	904
adamc@1094	905 if (n >= ctx->app->inputs_len) {
adamc@801	906 uw_set_error(ctx, "For input name %s, index %d is out of range", name, n);
adamc@801	907 return -1;
adamc@801	908 }
adamc@756	909
adamc@756	910 INP(ctx)[n].kind = NORMAL;
adamc@756	911 INP(ctx)[n].data.normal = value;
adamc@756	912 }
adamc@801	913
adamc@801	914 return 0;
adamc@144	915 }
adamc@144	916
adamc@311	917 char *uw_get_input(uw_context ctx, int n) {
adamc@169	918 if (n < 0)
adamc@311	919 uw_error(ctx, FATAL, "Negative input index %d", n);
adamc@1094	920 if (n >= ctx->app->inputs_len)
adamc@311	921 uw_error(ctx, FATAL, "Out-of-bounds input index %d", n);
adamc@737	922
adamc@756	923 switch (INP(ctx)[n].kind) {
adamc@737	924 case UNSET:
adamc@737	925 return NULL;
adamc@739	926 case FIL:
adamc@739	927 uw_error(ctx, FATAL, "Tried to read a file form input as normal");
adamc@756	928 case SUBFORM:
adamc@756	929 uw_error(ctx, FATAL, "Tried to read a subform form input as normal");
adamc@759	930 case SUBFORMS:
adamc@759	931 uw_error(ctx, FATAL, "Tried to read a subforms form input as normal");
adamc@759	932 case ENTRY:
adamc@759	933 uw_error(ctx, FATAL, "Tried to read an entry form input as normal");
adamc@737	934 case NORMAL:
adamc@756	935 return INP(ctx)[n].data.normal;
adamc@737	936 default:
adamc@737	937 uw_error(ctx, FATAL, "Impossible input kind");
adamc@737	938 }
adamc@138	939 }
adamc@138	940
adamc@311	941 char *uw_get_optional_input(uw_context ctx, int n) {
adamc@190	942 if (n < 0)
adamc@311	943 uw_error(ctx, FATAL, "Negative input index %d", n);
adamc@1094	944 if (n >= ctx->app->inputs_len)
adamc@311	945 uw_error(ctx, FATAL, "Out-of-bounds input index %d", n);
adamc@737	946
adamc@756	947 switch (INP(ctx)[n].kind) {
adamc@737	948 case UNSET:
adamc@737	949 return "";
adamc@739	950 case FIL:
adamc@739	951 uw_error(ctx, FATAL, "Tried to read a file form input as normal");
adamc@756	952 case SUBFORM:
adamc@756	953 uw_error(ctx, FATAL, "Tried to read a subform form input as normal");
adamc@759	954 case SUBFORMS:
adamc@759	955 uw_error(ctx, FATAL, "Tried to read a subforms form input as normal");
adamc@759	956 case ENTRY:
adamc@759	957 uw_error(ctx, FATAL, "Tried to read an entry form input as normal");
adamc@737	958 case NORMAL:
adamc@756	959 return INP(ctx)[n].data.normal;
adamc@737	960 default:
adamc@737	961 uw_error(ctx, FATAL, "Impossible input kind");
adamc@737	962 }
adamc@737	963 }
adamc@737	964
adamc@801	965 int uw_set_file_input(uw_context ctx, const char *name, uw_Basis_file f) {
adamc@1094	966 int n = ctx->app->input_num(name);
adamc@737	967
adamc@801	968 if (n < 0) {
adamc@801	969 uw_set_error(ctx, "Bad file input name %s", name);
adamc@801	970 return -1;
adamc@801	971 }
adamc@801	972
adamc@1094	973 if (n >= ctx->app->inputs_len) {
adamc@801	974 uw_set_error(ctx, "For file input name %s, index %d is out of range", name, n);
adamc@801	975 return -1;
adamc@801	976 }
adamc@737	977
adamc@739	978 ctx->inputs[n].kind = FIL;
adamc@739	979 ctx->inputs[n].data.file = f;
adamc@801	980
adamc@801	981 return 0;
adamc@737	982 }
adamc@737	983
adamc@739	984 void *uw_malloc(uw_context ctx, size_t len);
adamc@739	985
adamc@739	986 uw_Basis_file uw_get_file_input(uw_context ctx, int n) {
adamc@737	987 if (n < 0)
adamc@737	988 uw_error(ctx, FATAL, "Negative file input index %d", n);
adamc@1094	989 if (n >= ctx->app->inputs_len)
adamc@737	990 uw_error(ctx, FATAL, "Out-of-bounds file input index %d", n);
adamc@737	991
adamc@756	992 switch (INP(ctx)[n].kind) {
adamc@737	993 case UNSET:
adamc@737	994 {
adamc@739	995 char *data = uw_malloc(ctx, 0);
adamc@740	996 uw_Basis_file f = {NULL, "", {0, data}};
adamc@739	997 return f;
adamc@737	998 }
adamc@739	999 case FIL:
adamc@756	1000 return INP(ctx)[n].data.file;
adamc@737	1001 case NORMAL:
adamc@737	1002 uw_error(ctx, FATAL, "Tried to read a normal form input as files");
adamc@756	1003 case SUBFORM:
adamc@756	1004 uw_error(ctx, FATAL, "Tried to read a subform form input as files");
adamc@759	1005 case SUBFORMS:
adamc@759	1006 uw_error(ctx, FATAL, "Tried to read a subforms form input as files");
adamc@759	1007 case ENTRY:
adamc@759	1008 uw_error(ctx, FATAL, "Tried to read an entry form input as files");
adamc@737	1009 default:
adamc@737	1010 uw_error(ctx, FATAL, "Impossible input kind");
adamc@737	1011 }
adamc@190	1012 }
adamc@190	1013
adamc@756	1014 void uw_enter_subform(uw_context ctx, int n) {
adamc@756	1015 if (n < 0)
adamc@756	1016 uw_error(ctx, FATAL, "Negative subform index %d", n);
adamc@1094	1017 if (n >= ctx->app->inputs_len)
adamc@756	1018 uw_error(ctx, FATAL, "Out-of-bounds subform index %d", n);
adamc@756	1019
adamc@756	1020 switch (INP(ctx)[n].kind) {
adamc@756	1021 case UNSET:
adamc@756	1022 uw_error(ctx, FATAL, "Missing subform");
adamc@756	1023 case FIL:
adamc@756	1024 uw_error(ctx, FATAL, "Tried to read a file form input as subform");
adamc@756	1025 case NORMAL:
adamc@756	1026 uw_error(ctx, FATAL, "Tried to read a normal form input as subform");
adamc@759	1027 case SUBFORMS:
adamc@759	1028 uw_error(ctx, FATAL, "Tried to read a subforms form input as subform");
adamc@759	1029 case ENTRY:
adamc@759	1030 uw_error(ctx, FATAL, "Tried to read an entry form input as subform");
adamc@756	1031 case SUBFORM:
adamc@759	1032 INP(ctx)[n].data.subform.parent = ctx->cur_container;
adamc@760	1033 ctx->cur_container = &INP(ctx)[n];
adamc@756	1034 return;
adamc@756	1035 default:
adamc@756	1036 uw_error(ctx, FATAL, "Impossible input kind");
adamc@756	1037 }
adamc@756	1038 }
adamc@756	1039
adamc@756	1040 void uw_leave_subform(uw_context ctx) {
adamc@756	1041 input *tmp;
adamc@756	1042
adamc@759	1043 if (ctx->cur_container == NULL)
adamc@756	1044 uw_error(ctx, FATAL, "Unmatched uw_leave_subform");
adamc@756	1045
adamc@759	1046 tmp = ctx->cur_container;
adamc@759	1047 ctx->cur_container = tmp->data.subform.parent;
adamc@759	1048 tmp->data.subform.parent = NULL;
adamc@759	1049 }
adamc@759	1050
adamc@759	1051 int uw_enter_subforms(uw_context ctx, int n) {
adamc@759	1052 input *inps;
adamc@759	1053
adamc@759	1054 if (n < 0)
adamc@759	1055 uw_error(ctx, FATAL, "Negative subforms index %d", n);
adamc@1094	1056 if (n >= ctx->app->inputs_len)
adamc@759	1057 uw_error(ctx, FATAL, "Out-of-bounds subforms index %d", n);
adamc@759	1058
adamc@759	1059 switch (INP(ctx)[n].kind) {
adamc@759	1060 case UNSET:
adamc@759	1061 uw_error(ctx, FATAL, "Missing subforms");
adamc@759	1062 case FIL:
adamc@759	1063 uw_error(ctx, FATAL, "Tried to read a file form input as subforms");
adamc@759	1064 case NORMAL:
adamc@759	1065 uw_error(ctx, FATAL, "Tried to read a normal form input %p as subforms", &INP(ctx)[n]);
adamc@759	1066 case SUBFORM:
adamc@759	1067 uw_error(ctx, FATAL, "Tried to read a subform form input as subforms");
adamc@759	1068 case ENTRY:
adamc@759	1069 uw_error(ctx, FATAL, "Tried to read an entry form input as subforms");
adamc@759	1070 case SUBFORMS:
adamc@759	1071 inps = INP(ctx)[n].data.subforms.entries;
adamc@759	1072 if (inps) {
adamc@759	1073 INP(ctx)[n].data.subforms.parent = ctx->cur_container;
adamc@759	1074 ctx->cur_container = INP(ctx)[n].data.subforms.entries;
adamc@759	1075 return 1;
adamc@759	1076 } else
adamc@759	1077 return 0;
adamc@759	1078 default:
adamc@759	1079 uw_error(ctx, FATAL, "Impossible input kind");
adamc@759	1080 }
adamc@759	1081 }
adamc@759	1082
adamc@759	1083 int uw_next_entry(uw_context ctx) {
adamc@759	1084 if (ctx->cur_container == NULL)
adamc@759	1085 uw_error(ctx, FATAL, "uw_next_entry(NULL)");
adamc@759	1086
adamc@759	1087 switch (ctx->cur_container->kind) {
adamc@759	1088 case UNSET:
adamc@759	1089 uw_error(ctx, FATAL, "Missing entry");
adamc@759	1090 case FIL:
adamc@759	1091 uw_error(ctx, FATAL, "Tried to read a file form input as entry");
adamc@759	1092 case NORMAL:
adamc@759	1093 uw_error(ctx, FATAL, "Tried to read a normal form input as entry");
adamc@759	1094 case SUBFORM:
adamc@759	1095 uw_error(ctx, FATAL, "Tried to read a subform form input as entry");
adamc@759	1096 case SUBFORMS:
adamc@759	1097 uw_error(ctx, FATAL, "Tried to read a subforms form input as entry");
adamc@759	1098 case ENTRY:
adamc@759	1099 if (ctx->cur_container->data.entry.next) {
adamc@759	1100 ctx->cur_container = ctx->cur_container->data.entry.next;
adamc@759	1101 return 1;
adamc@759	1102 } else {
adamc@759	1103 ctx->cur_container = ctx->cur_container->data.entry.parent->data.subforms.parent;
adamc@759	1104 return 0;
adamc@759	1105 }
adamc@759	1106 default:
adamc@759	1107 uw_error(ctx, FATAL, "Impossible input kind");
adamc@759	1108 }
adamc@756	1109 }
adamc@756	1110
adamc@643	1111 void uw_set_script_header(uw_context ctx, const char *s) {
adamc@643	1112 ctx->script_header = s;
adamc@643	1113 }
adamc@643	1114
adamc@1094	1115 const char *uw_get_url_prefix(uw_context ctx) {
adamc@1094	1116 return ctx->app->url_prefix;
adamc@667	1117 }
adamc@667	1118
adamc@693	1119 void uw_set_needs_push(uw_context ctx, int n) {
adamc@693	1120 ctx->needs_push = n;
adamc@693	1121 }
adamc@693	1122
adamc@736	1123 void uw_set_needs_sig(uw_context ctx, int n) {
adamc@736	1124 ctx->needs_sig = n;
adamc@736	1125 }
adamc@736	1126
adamc@667	1127
adamc@1113	1128 static void buf_check_ctx(uw_context ctx, const char kind, buf b, size_t extra, const char *desc) {
adamc@666	1129 if (b->back - b->front < extra) {
adamc@666	1130 size_t desired = b->front - b->start + extra, next;
adamc@136	1131 char *new_heap;
adamc@136	1132
adamc@666	1133 next = b->back - b->start;
adamc@317	1134 if (next == 0)
adamc@317	1135 next = 1;
adamc@317	1136 for (; next < desired; next *= 2);
adamc@136	1137
adamc@1134	1138 if (next > b->max) {
adamc@1113	1139 if (desired <= b->max)
adamc@1113	1140 next = desired;
adamc@1113	1141 else
adamc@1113	1142 uw_error(ctx, FATAL, "Memory limit exceeded (%s)", kind);
adamc@1134	1143 }
adamc@1113	1144
adamc@666	1145 new_heap = realloc(b->start, next);
adamc@666	1146 b->front = new_heap + (b->front - b->start);
adamc@666	1147 b->back = new_heap + next;
adamc@136	1148
adamc@667	1149 if (new_heap != b->start) {
adamc@666	1150 b->start = new_heap;
adamc@666	1151 uw_error(ctx, UNLIMITED_RETRY, "Couldn't allocate new %s contiguously", desc);
adamc@136	1152 }
adamc@136	1153
adamc@666	1154 b->start = new_heap;
adamc@136	1155 }
adamc@136	1156 }
adamc@136	1157
adamc@832	1158 void uw_check_heap(uw_context ctx, size_t extra) {
adamc@1113	1159 buf_check_ctx(ctx, "heap", &ctx->heap, extra, "heap chunk");
adamc@666	1160 }
adamc@666	1161
adamc@832	1162 char *uw_heap_front(uw_context ctx) {
adamc@832	1163 return ctx->heap.front;
adamc@832	1164 }
adamc@832	1165
adamc@832	1166 void uw_set_heap_front(uw_context ctx, char *fr) {
adamc@832	1167 ctx->heap.front = fr;
adamc@832	1168 }
adamc@832	1169
adamc@311	1170 void *uw_malloc(uw_context ctx, size_t len) {
adamc@136	1171 void *result;
adamc@136	1172
adamc@311	1173 uw_check_heap(ctx, len);
adamc@136	1174
adamc@666	1175 result = ctx->heap.front;
adamc@666	1176 ctx->heap.front += len;
adamc@136	1177 return result;
adamc@117	1178 }
adamc@117	1179
adamc@323	1180 void uw_begin_region(uw_context ctx) {
adamc@666	1181 regions r = (regions ) ctx->heap.front;
adamc@323	1182
adamc@323	1183 uw_check_heap(ctx, sizeof(regions));
adamc@323	1184
adamc@666	1185 ctx->heap.front += sizeof(regions);
adamc@323	1186
adamc@323	1187 r->next = ctx->regions;
adamc@323	1188 ctx->regions = r;
adamc@323	1189 }
adamc@323	1190
adamc@323	1191 void uw_end_region(uw_context ctx) {
adamc@323	1192 regions *r = ctx->regions;
adamc@323	1193
adamc@323	1194 if (r == NULL)
adamc@323	1195 uw_error(ctx, FATAL, "Region stack underflow");
adamc@323	1196
adamc@666	1197 ctx->heap.front = (char *) r;
adamc@323	1198 ctx->regions = r->next;
adamc@323	1199 }
adamc@323	1200
adamc@324	1201 void uw_memstats(uw_context ctx) {
adamc@1134	1202 printf("Headers: %lu/%lu\n", (unsigned long)buf_used(&ctx->outHeaders), (unsigned long)buf_avail(&ctx->outHeaders));
adamc@1134	1203 printf("Script: %lu/%lu\n", (unsigned long)buf_used(&ctx->script), (unsigned long)buf_avail(&ctx->script));
adamc@1134	1204 printf("Page: %lu/%lu\n", (unsigned long)buf_used(&ctx->page), (unsigned long)buf_avail(&ctx->page));
adamc@1134	1205 printf("Heap: %lu/%lu\n", (unsigned long)buf_used(&ctx->heap), (unsigned long)buf_avail(&ctx->heap));
adamc@324	1206 }
adamc@324	1207
adamc@311	1208 int uw_send(uw_context ctx, int sock) {
adamc@666	1209 int n = uw_really_send(sock, ctx->outHeaders.start, ctx->outHeaders.front - ctx->outHeaders.start);
adamc@462	1210
adamc@462	1211 if (n < 0)
adamc@462	1212 return n;
adamc@462	1213
adamc@462	1214 n = uw_really_send(sock, "\r\n", 2);
adamc@462	1215
adamc@462	1216 if (n < 0)
adamc@462	1217 return n;
adamc@462	1218
adamc@666	1219 return uw_really_send(sock, ctx->page.start, ctx->page.front - ctx->page.start);
adamc@462	1220 }
adamc@462	1221
adamc@856	1222 int uw_print(uw_context ctx, int fd) {
adamc@856	1223 int n = uw_really_write(fd, ctx->outHeaders.start, ctx->outHeaders.front - ctx->outHeaders.start);
adamc@856	1224
adamc@856	1225 if (n < 0)
adamc@856	1226 return n;
adamc@856	1227
adamc@856	1228 n = uw_really_write(fd, "\r\n", 2);
adamc@856	1229
adamc@856	1230 if (n < 0)
adamc@856	1231 return n;
adamc@856	1232
adamc@856	1233 return uw_really_write(fd, ctx->page.start, ctx->page.front - ctx->page.start);
adamc@856	1234 }
adamc@856	1235
adamc@860	1236 int uw_output(uw_context ctx, int (output)(void data, char buf, size_t len), void data) {
adamc@860	1237 int n = output(data, ctx->outHeaders.start, ctx->outHeaders.front - ctx->outHeaders.start);
adamc@860	1238
adamc@860	1239 if (n < 0)
adamc@860	1240 return n;
adamc@860	1241
adamc@860	1242 n = output(data, "\r\n", 2);
adamc@860	1243
adamc@860	1244 if (n < 0)
adamc@860	1245 return n;
adamc@860	1246
adamc@860	1247 return output(data, ctx->page.start, ctx->page.front - ctx->page.start);
adamc@860	1248 }
adamc@860	1249
adamc@462	1250 static void uw_check_headers(uw_context ctx, size_t extra) {
adamc@1113	1251 ctx_buf_check(ctx, "headers", &ctx->outHeaders, extra);
adamc@462	1252 }
adamc@462	1253
adamc@462	1254 void uw_write_header(uw_context ctx, uw_Basis_string s) {
adamc@462	1255 int len = strlen(s);
adamc@462	1256
adamc@462	1257 uw_check_headers(ctx, len + 1);
adamc@666	1258 strcpy(ctx->outHeaders.front, s);
adamc@666	1259 ctx->outHeaders.front += len;
adamc@562	1260 }
adamc@562	1261
adamc@1110	1262 void uw_clear_headers(uw_context ctx) {
adamc@1110	1263 buf_reset(&ctx->outHeaders);
adamc@1110	1264 }
adamc@1110	1265
adamc@562	1266 static void uw_check_script(uw_context ctx, size_t extra) {
adamc@1113	1267 ctx_buf_check(ctx, "script", &ctx->script, extra);
adamc@562	1268 }
adamc@562	1269
adamc@562	1270 void uw_write_script(uw_context ctx, uw_Basis_string s) {
adamc@562	1271 int len = strlen(s);
adamc@562	1272
adamc@562	1273 uw_check_script(ctx, len + 1);
adamc@666	1274 strcpy(ctx->script.front, s);
adamc@666	1275 ctx->script.front += len;
adamc@562	1276 }
adamc@562	1277
adamc@645	1278 const char *uw_Basis_get_script(uw_context ctx, uw_unit u) {
adamc@916	1279 return "<sc>";
adamc@565	1280 }
adamc@565	1281
adamc@695	1282 uw_Basis_string uw_Basis_maybe_onload(uw_context ctx, uw_Basis_string s) {
adamc@695	1283 if (s[0] == 0)
adamc@695	1284 return "";
adamc@695	1285 else {
adamc@695	1286 char *r = uw_malloc(ctx, 11 + strlen(s));
adamc@695	1287 sprintf(r, " onload='%s'", s);
adamc@695	1288 return r;
adamc@695	1289 }
adamc@695	1290 }
adamc@695	1291
adamc@1042	1292 uw_Basis_string uw_Basis_maybe_onunload(uw_context ctx, uw_Basis_string s) {
adamc@1042	1293 if (ctx->script_header[0] == 0)
adamc@1042	1294 return "";
adamc@1042	1295 else {
adamc@1042	1296 char *r = uw_malloc(ctx, 22 + strlen(s));
adamc@1042	1297 sprintf(r, " onunload='unload();%s'", s);
adamc@1042	1298 return r;
adamc@1042	1299 }
adamc@1042	1300 }
adamc@1042	1301
adamc@694	1302 const char *uw_Basis_get_settings(uw_context ctx, uw_unit u) {
adamc@736	1303 if (ctx->client == NULL) {
adamc@736	1304 if (ctx->needs_sig) {
adamc@1094	1305 char *sig = ctx->app->cookie_sig(ctx);
adamc@736	1306 char *r = uw_malloc(ctx, strlen(sig) + 8);
adamc@736	1307 sprintf(r, "sig=\"%s\";", sig);
adamc@736	1308 return r;
adamc@736	1309 }
adamc@736	1310 else
adamc@736	1311 return "";
adamc@736	1312 } else {
adamc@1094	1313 char *sig = ctx->needs_sig ? ctx->app->cookie_sig(ctx) : "";
adamc@1094	1314 char r = uw_malloc(ctx, 59 + 3 INTS_MAX + strlen(ctx->app->url_prefix)
adamc@736	1315 + (ctx->needs_sig ? strlen(sig) + 7 : 0));
adamc@736	1316 sprintf(r, "client_id=%u;client_pass=%d;url_prefix=\"%s\";timeout=%d;%s%s%slistener();",
adamc@682	1317 ctx->client->id,
adamc@682	1318 ctx->client->pass,
adamc@1094	1319 ctx->app->url_prefix,
adamc@1094	1320 ctx->app->timeout,
adamc@736	1321 ctx->needs_sig ? "sig=\"" : "",
adamc@736	1322 sig,
adamc@736	1323 ctx->needs_sig ? "\";" : "");
adamc@679	1324 return r;
adamc@668	1325 }
adamc@667	1326 }
adamc@667	1327
adamc@574	1328 uw_Basis_string uw_Basis_jsifyString(uw_context ctx, uw_Basis_string s) {
adamc@574	1329 char r, s2;
adamc@574	1330
adamc@574	1331 uw_check_heap(ctx, strlen(s) * 4 + 2);
adamc@574	1332
adamc@666	1333 r = s2 = ctx->heap.front;
adamc@574	1334 *s2++ = '"';
adamc@574	1335
adamc@574	1336 for (; *s; s++) {
adamc@574	1337 char c = *s;
adamc@574	1338
adamc@574	1339 switch (c) {
adamc@574	1340 case '"':
adamc@574	1341 strcpy(s2, "\\\"");
adamc@574	1342 s2 += 2;
adamc@574	1343 break;
adamc@1027	1344 case '\'':
adamc@1027	1345 strcpy(s2, "\\047");
adamc@1027	1346 s2 += 4;
adamc@1027	1347 break;
adamc@574	1348 case '\\':
adamc@574	1349 strcpy(s2, "\\\\");
adamc@574	1350 s2 += 2;
adamc@574	1351 break;
adamc@574	1352 default:
adamc@1147	1353 if (isprint((int)c))
adamc@574	1354 *s2++ = c;
adamc@574	1355 else {
adamc@574	1356 sprintf(s2, "\\%3o", c);
adamc@574	1357 s2 += 4;
adamc@574	1358 }
adamc@574	1359 }
adamc@574	1360 }
adamc@574	1361
adamc@574	1362 strcpy(s2, "\"");
adamc@910	1363 ctx->heap.front = s2 + 2;
adamc@574	1364 return r;
adamc@574	1365 }
adamc@574	1366
adamc@1025	1367 uw_Basis_string uw_Basis_jsifyChar(uw_context ctx, uw_Basis_char c) {
adamc@1025	1368 char r, s2;
adamc@1025	1369
adamc@1025	1370 uw_check_heap(ctx, 6);
adamc@1025	1371
adamc@1025	1372 r = s2 = ctx->heap.front;
adamc@1025	1373 *s2++ = '"';
adamc@1025	1374
adamc@1025	1375 switch (c) {
adamc@1025	1376 case '"':
adamc@1025	1377 strcpy(s2, "\\\"");
adamc@1025	1378 s2 += 2;
adamc@1025	1379 break;
adamc@1027	1380 case '\'':
adamc@1027	1381 strcpy(s2, "\\047");
adamc@1027	1382 s2 += 4;
adamc@1027	1383 break;
adamc@1025	1384 case '\\':
adamc@1025	1385 strcpy(s2, "\\\\");
adamc@1025	1386 s2 += 2;
adamc@1025	1387 break;
adamc@1025	1388 default:
adamc@1147	1389 if (isprint((int)c))
adamc@1025	1390 *s2++ = c;
adamc@1025	1391 else {
adamc@1025	1392 sprintf(s2, "\\%3o", c);
adamc@1025	1393 s2 += 4;
adamc@1025	1394 }
adamc@1025	1395 }
adamc@1025	1396
adamc@1025	1397 strcpy(s2, "\"");
adamc@1025	1398 ctx->heap.front = s2 + 2;
adamc@1025	1399 return r;
adamc@1025	1400 }
adamc@1025	1401
adamc@574	1402 uw_Basis_string uw_Basis_jsifyString_ws(uw_context ctx, uw_Basis_string s) {
adamc@574	1403 char r, s2;
adamc@574	1404
adamc@574	1405 uw_check_script(ctx, strlen(s) * 4 + 2);
adamc@574	1406
adamc@666	1407 r = s2 = ctx->script.front;
adamc@574	1408 *s2++ = '"';
adamc@574	1409
adamc@574	1410 for (; *s; s++) {
adamc@574	1411 char c = *s;
adamc@574	1412
adamc@574	1413 switch (c) {
adamc@577	1414 case '\'':
adamc@1027	1415 strcpy(s2, "\\");
adamc@574	1416 s2 += 2;
adamc@574	1417 break;
adamc@574	1418 case '\\':
adamc@574	1419 strcpy(s2, "\\\\");
adamc@574	1420 s2 += 2;
adamc@574	1421 break;
adamc@574	1422 default:
adamc@1147	1423 if (isprint((int)c))
adamc@574	1424 *s2++ = c;
adamc@574	1425 else {
adamc@574	1426 sprintf(s2, "\\%3o", c);
adamc@574	1427 s2 += 4;
adamc@574	1428 }
adamc@574	1429 }
adamc@574	1430 }
adamc@574	1431
adamc@574	1432 strcpy(s2, "\"");
adamc@666	1433 ctx->script.front = s2 + 1;
adamc@574	1434 return r;
adamc@574	1435 }
adamc@574	1436
adamc@682	1437 char *uw_Basis_jsifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	1438 if (ctx->client == NULL \|\| chn.cli != ctx->client->id)
adamc@682	1439 return "null";
adamc@682	1440 else {
adamc@682	1441 int len;
adamc@682	1442 char *r;
adamc@682	1443
adamc@682	1444 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	1445 r = ctx->heap.front;
adamc@682	1446 sprintf(r, "%u%n", chn.chn, &len);
adamc@682	1447 ctx->heap.front += len+1;
adamc@682	1448 return r;
adamc@682	1449 }
adamc@682	1450 }
adamc@682	1451
adamc@577	1452 uw_Basis_int uw_Basis_new_client_source(uw_context ctx, uw_Basis_string s) {
adamc@577	1453 int len;
adamc@577	1454 size_t s_len = strlen(s);
adamc@562	1455
adamc@970	1456 uw_check_script(ctx, 18 + INTS_MAX + s_len);
adamc@970	1457 sprintf(ctx->script.front, "var s%d=sc(exec(%n", ctx->source_count, &len);
adamc@666	1458 ctx->script.front += len;
adamc@666	1459 strcpy(ctx->script.front, s);
adamc@666	1460 ctx->script.front += s_len;
adamc@970	1461 strcpy(ctx->script.front, "));");
adamc@972	1462 ctx->script.front += 3;
adamc@562	1463
adamc@565	1464 return ctx->source_count++;
adamc@117	1465 }
adamc@117	1466
adamc@577	1467 uw_unit uw_Basis_set_client_source(uw_context ctx, uw_Basis_int n, uw_Basis_string s) {
adamc@577	1468 int len;
adamc@577	1469 size_t s_len = strlen(s);
adamc@577	1470
adamc@970	1471 uw_check_script(ctx, 12 + INTS_MAX + s_len);
adamc@970	1472 sprintf(ctx->script.front, "sv(s%d,exec(%n", (int)n, &len);
adamc@666	1473 ctx->script.front += len;
adamc@666	1474 strcpy(ctx->script.front, s);
adamc@666	1475 ctx->script.front += s_len;
adamc@970	1476 strcpy(ctx->script.front, "));");
adamc@972	1477 ctx->script.front += 3;
adamc@577	1478
adamc@577	1479 return uw_unit_v;
adamc@577	1480 }
adamc@577	1481
adamc@311	1482 static void uw_check(uw_context ctx, size_t extra) {
adamc@1113	1483 ctx_buf_check(ctx, "page", &ctx->page, extra);
adamc@117	1484 }
adamc@117	1485
adamc@311	1486 static void uw_writec_unsafe(uw_context ctx, char c) {
adamc@666	1487 *(ctx->page.front)++ = c;
adamc@117	1488 }
adamc@117	1489
adamc@311	1490 void uw_writec(uw_context ctx, char c) {
adamc@311	1491 uw_check(ctx, 1);
adamc@311	1492 uw_writec_unsafe(ctx, c);
adamc@117	1493 }
adamc@117	1494
adamc@311	1495 static void uw_write_unsafe(uw_context ctx, const char* s) {
adamc@117	1496 int len = strlen(s);
adamc@666	1497 memcpy(ctx->page.front, s, len);
adamc@666	1498 ctx->page.front += len;
adamc@117	1499 }
adamc@117	1500
adamc@311	1501 void uw_write(uw_context ctx, const char* s) {
adamc@311	1502 uw_check(ctx, strlen(s) + 1);
adamc@311	1503 uw_write_unsafe(ctx, s);
adamc@666	1504 *ctx->page.front = 0;
adamc@102	1505 }
adamc@106	1506
adamc@311	1507 char *uw_Basis_attrifyInt(uw_context ctx, uw_Basis_int n) {
adamc@136	1508 char *result;
adamc@136	1509 int len;
adamc@311	1510 uw_check_heap(ctx, INTS_MAX);
adamc@666	1511 result = ctx->heap.front;
adamc@276	1512 sprintf(result, "%lld%n", n, &len);
adamc@666	1513 ctx->heap.front += len+1;
adamc@136	1514 return result;
adamc@106	1515 }
adamc@106	1516
adamc@311	1517 char *uw_Basis_attrifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@136	1518 char *result;
adamc@136	1519 int len;
adamc@311	1520 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	1521 result = ctx->heap.front;
adamc@136	1522 sprintf(result, "%g%n", n, &len);
adamc@666	1523 ctx->heap.front += len+1;
adamc@136	1524 return result;
adamc@106	1525 }
adamc@106	1526
adamc@311	1527 char *uw_Basis_attrifyString(uw_context ctx, uw_Basis_string s) {
adamc@136	1528 int len = strlen(s);
adamc@136	1529 char result, p;
adamc@311	1530 uw_check_heap(ctx, len * 6 + 1);
adamc@136	1531
adamc@666	1532 result = p = ctx->heap.front;
adamc@136	1533
adamc@136	1534 for (; *s; s++) {
adamc@1054	1535 unsigned char c = *s;
adamc@136	1536
adamc@136	1537 if (c == '"') {
adamc@136	1538 strcpy(p, """);
adamc@136	1539 p += 6;
adamc@136	1540 } else if (c == '&') {
adamc@136	1541 strcpy(p, "&");
adamc@136	1542 p += 5;
adamc@136	1543 }
adamc@1059	1544 else
adamc@136	1545 *p++ = c;
adamc@136	1546 }
adamc@136	1547
adamc@137	1548 *p++ = 0;
adamc@666	1549 ctx->heap.front = p;
adamc@136	1550 return result;
adamc@106	1551 }
adamc@106	1552
adamc@1011	1553 char *uw_Basis_attrifyChar(uw_context ctx, uw_Basis_char c) {
adamc@1011	1554 char result, p;
adamc@1011	1555 uw_check_heap(ctx, 7);
adamc@1011	1556
adamc@1011	1557 result = p = ctx->heap.front;
adamc@1011	1558
adamc@1011	1559 if (c == '"') {
adamc@1011	1560 strcpy(p, """);
adamc@1011	1561 p += 6;
adamc@1011	1562 } else if (c == '&') {
adamc@1011	1563 strcpy(p, "&");
adamc@1011	1564 p += 5;
adamc@1011	1565 }
adamc@1059	1566 else
adamc@1011	1567 *p++ = c;
adamc@1011	1568
adamc@1011	1569 *p++ = 0;
adamc@1011	1570 ctx->heap.front = p;
adamc@1011	1571 return result;
adamc@1011	1572 }
adamc@1011	1573
adamc@721	1574 char *uw_Basis_attrifyCss_class(uw_context ctx, uw_Basis_css_class s) {
adamc@721	1575 return s;
adamc@721	1576 }
adamc@721	1577
adamc@311	1578 static void uw_Basis_attrifyInt_w_unsafe(uw_context ctx, uw_Basis_int n) {
adamc@117	1579 int len;
adamc@117	1580
adamc@666	1581 sprintf(ctx->page.front, "%lld%n", n, &len);
adamc@666	1582 ctx->page.front += len;
adamc@106	1583 }
adamc@106	1584
adamc@428	1585 uw_unit uw_Basis_attrifyInt_w(uw_context ctx, uw_Basis_int n) {
adamc@311	1586 uw_check(ctx, INTS_MAX);
adamc@311	1587 uw_Basis_attrifyInt_w_unsafe(ctx, n);
adamc@428	1588
adamc@428	1589 return uw_unit_v;
adamc@106	1590 }
adamc@106	1591
adamc@428	1592 uw_unit uw_Basis_attrifyFloat_w(uw_context ctx, uw_Basis_float n) {
adamc@117	1593 int len;
adamc@117	1594
adamc@311	1595 uw_check(ctx, FLOATS_MAX);
adamc@666	1596 sprintf(ctx->page.front, "%g%n", n, &len);
adamc@666	1597 ctx->page.front += len;
adamc@428	1598
adamc@428	1599 return uw_unit_v;
adamc@117	1600 }
adamc@117	1601
adamc@428	1602 uw_unit uw_Basis_attrifyString_w(uw_context ctx, uw_Basis_string s) {
adamc@311	1603 uw_check(ctx, strlen(s) * 6);
adamc@117	1604
adamc@106	1605 for (; *s; s++) {
adamc@1054	1606 unsigned char c = *s;
adamc@106	1607
adamc@106	1608 if (c == '"')
adamc@311	1609 uw_write_unsafe(ctx, """);
adamc@136	1610 else if (c == '&')
adamc@311	1611 uw_write_unsafe(ctx, "&");
adamc@1059	1612 else
adamc@311	1613 uw_writec_unsafe(ctx, c);
adamc@106	1614 }
adamc@428	1615
adamc@428	1616 return uw_unit_v;
adamc@106	1617 }
adamc@120	1618
adamc@1011	1619 uw_unit uw_Basis_attrifyChar_w(uw_context ctx, uw_Basis_char c) {
adamc@1011	1620 uw_check(ctx, 6);
adamc@1011	1621
adamc@1011	1622 if (c == '"')
adamc@1011	1623 uw_write_unsafe(ctx, """);
adamc@1011	1624 else if (c == '&')
adamc@1011	1625 uw_write_unsafe(ctx, "&");
adamc@1059	1626 else
adamc@1011	1627 uw_writec_unsafe(ctx, c);
adamc@1011	1628
adamc@1011	1629 return uw_unit_v;
adamc@1011	1630 }
adamc@1011	1631
adamc@120	1632
adamc@311	1633 char *uw_Basis_urlifyInt(uw_context ctx, uw_Basis_int n) {
adamc@137	1634 int len;
adamc@137	1635 char *r;
adamc@137	1636
adamc@311	1637 uw_check_heap(ctx, INTS_MAX);
adamc@666	1638 r = ctx->heap.front;
adamc@276	1639 sprintf(r, "%lld%n", n, &len);
adamc@666	1640 ctx->heap.front += len+1;
adamc@137	1641 return r;
adamc@120	1642 }
adamc@120	1643
adamc@682	1644 char *uw_Basis_urlifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	1645 if (ctx->client == NULL \|\| chn.cli != ctx->client->id)
adamc@682	1646 return "";
adamc@682	1647 else {
adamc@682	1648 int len;
adamc@682	1649 char *r;
adamc@679	1650
adamc@682	1651 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	1652 r = ctx->heap.front;
adamc@682	1653 sprintf(r, "%u%n", chn.chn, &len);
adamc@682	1654 ctx->heap.front += len+1;
adamc@682	1655 return r;
adamc@682	1656 }
adamc@679	1657 }
adamc@679	1658
adamc@311	1659 char *uw_Basis_urlifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@137	1660 int len;
adamc@137	1661 char *r;
adamc@137	1662
adamc@311	1663 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	1664 r = ctx->heap.front;
adamc@137	1665 sprintf(r, "%g%n", n, &len);
adamc@666	1666 ctx->heap.front += len+1;
adamc@137	1667 return r;
adamc@120	1668 }
adamc@120	1669
adamc@311	1670 char *uw_Basis_urlifyString(uw_context ctx, uw_Basis_string s) {
adamc@137	1671 char r, p;
adamc@137	1672
adamc@925	1673 if (s[0] == '\0')
adamc@925	1674 return "_";
adamc@925	1675
adamc@925	1676 uw_check_heap(ctx, strlen(s) * 3 + 1 + !!(s[0] == '_'));
adamc@925	1677
adamc@925	1678 r = p = ctx->heap.front;
adamc@925	1679 if (s[0] == '_')
adamc@925	1680 *p++ = '_';
adamc@925	1681
adamc@925	1682 for (; *s; s++) {
adamc@1087	1683 unsigned char c = *s;
adamc@137	1684
adamc@137	1685 if (c == ' ')
adamc@137	1686 *p++ = '+';
adamc@137	1687 else if (isalnum(c))
adamc@137	1688 *p++ = c;
adamc@137	1689 else {
adamc@137	1690 sprintf(p, "%%%02X", c);
adamc@137	1691 p += 3;
adamc@137	1692 }
adamc@137	1693 }
adamc@137	1694
adamc@137	1695 *p++ = 0;
adamc@666	1696 ctx->heap.front = p;
adamc@137	1697 return r;
adamc@120	1698 }
adamc@120	1699
adamc@311	1700 char *uw_Basis_urlifyBool(uw_context ctx, uw_Basis_bool b) {
adamc@311	1701 if (b == uw_Basis_False)
adamc@186	1702 return "0";
adamc@186	1703 else
adamc@186	1704 return "1";
adamc@186	1705 }
adamc@186	1706
adamc@311	1707 static void uw_Basis_urlifyInt_w_unsafe(uw_context ctx, uw_Basis_int n) {
adamc@120	1708 int len;
adamc@120	1709
adamc@666	1710 sprintf(ctx->page.front, "%lld%n", n, &len);
adamc@666	1711 ctx->page.front += len;
adamc@120	1712 }
adamc@120	1713
adamc@428	1714 uw_unit uw_Basis_urlifyInt_w(uw_context ctx, uw_Basis_int n) {
adamc@311	1715 uw_check(ctx, INTS_MAX);
adamc@311	1716 uw_Basis_urlifyInt_w_unsafe(ctx, n);
adamc@428	1717
adamc@428	1718 return uw_unit_v;
adamc@120	1719 }
adamc@120	1720
adamc@682	1721 uw_unit uw_Basis_urlifyChannel_w(uw_context ctx, uw_Basis_channel chn) {
adamc@682	1722 if (ctx->client != NULL && chn.cli == ctx->client->id) {
adamc@682	1723 int len;
adamc@682	1724
adamc@682	1725 uw_check(ctx, INTS_MAX + 1);
adamc@682	1726 sprintf(ctx->page.front, "%u%n", chn.chn, &len);
adamc@682	1727 ctx->page.front += len;
adamc@682	1728 }
adamc@682	1729
adamc@679	1730 return uw_unit_v;
adamc@679	1731 }
adamc@679	1732
adamc@428	1733 uw_unit uw_Basis_urlifyFloat_w(uw_context ctx, uw_Basis_float n) {
adamc@120	1734 int len;
adamc@120	1735
adamc@311	1736 uw_check(ctx, FLOATS_MAX);
adamc@666	1737 sprintf(ctx->page.front, "%g%n", n, &len);
adamc@666	1738 ctx->page.front += len;
adamc@428	1739
adamc@428	1740 return uw_unit_v;
adamc@120	1741 }
adamc@120	1742
adamc@488	1743 uw_Basis_string uw_Basis_urlifyTime(uw_context ctx, uw_Basis_time t) {
adamc@488	1744 return uw_Basis_urlifyInt(ctx, t);
adamc@488	1745 }
adamc@488	1746
adamc@428	1747 uw_unit uw_Basis_urlifyString_w(uw_context ctx, uw_Basis_string s) {
adamc@925	1748 if (s[0] == '\0') {
adamc@925	1749 uw_check(ctx, 1);
adamc@925	1750 uw_writec_unsafe(ctx, '_');
adamc@925	1751 return uw_unit_v;
adamc@925	1752 }
adamc@925	1753
adamc@925	1754 uw_check(ctx, strlen(s) * 3 + !!(s[0] == '_'));
adamc@925	1755
adamc@925	1756 if (s[0] == '_')
adamc@925	1757 uw_writec_unsafe(ctx, '_');
adamc@120	1758
adamc@120	1759 for (; *s; s++) {
adamc@1087	1760 unsigned char c = *s;
adamc@120	1761
adamc@120	1762 if (c == ' ')
adamc@311	1763 uw_writec_unsafe(ctx, '+');
adamc@120	1764 else if (isalnum(c))
adamc@311	1765 uw_writec_unsafe(ctx, c);
adamc@120	1766 else {
adamc@666	1767 sprintf(ctx->page.front, "%%%02X", c);
adamc@666	1768 ctx->page.front += 3;
adamc@120	1769 }
adamc@120	1770 }
adamc@428	1771
adamc@428	1772 return uw_unit_v;
adamc@120	1773 }
adamc@120	1774
adamc@428	1775 uw_unit uw_Basis_urlifyBool_w(uw_context ctx, uw_Basis_bool b) {
adamc@311	1776 if (b == uw_Basis_False)
adamc@311	1777 uw_writec(ctx, '0');
adamc@186	1778 else
adamc@311	1779 uw_writec(ctx, '1');
adamc@428	1780
adamc@428	1781 return uw_unit_v;
adamc@186	1782 }
adamc@186	1783
adamc@120	1784
adamc@311	1785 static char uw_unurlify_advance(char s) {
adamc@144	1786 char *new_s = strchr(s, '/');
adamc@120	1787
adamc@120	1788 if (new_s)
adamc@120	1789 *new_s++ = 0;
adamc@120	1790 else
adamc@144	1791 new_s = strchr(s, 0);
adamc@144	1792
adamc@144	1793 return new_s;
adamc@144	1794 }
adamc@144	1795
adamc@311	1796 uw_Basis_int uw_Basis_unurlifyInt(uw_context ctx, char **s) {
adamc@311	1797 char new_s = uw_unurlify_advance(s);
adamc@311	1798 uw_Basis_int r;
adamc@120	1799
adamc@276	1800 r = atoll(*s);
adamc@120	1801 *s = new_s;
adamc@120	1802 return r;
adamc@120	1803 }
adamc@120	1804
adamc@311	1805 uw_Basis_float uw_Basis_unurlifyFloat(uw_context ctx, char **s) {
adamc@311	1806 char new_s = uw_unurlify_advance(s);
adamc@311	1807 uw_Basis_float r;
adamc@120	1808
adamc@120	1809 r = atof(*s);
adamc@120	1810 *s = new_s;
adamc@120	1811 return r;
adamc@120	1812 }
adamc@120	1813
adamc@488	1814 uw_Basis_time uw_Basis_unurlifyTime(uw_context ctx, char **s) {
adamc@488	1815 return uw_Basis_unurlifyInt(ctx, s);
adamc@488	1816 }
adamc@488	1817
adamc@1023	1818 static uw_Basis_string uw_unurlifyString_to(int fromClient, uw_context ctx, char r, char s) {
adamc@927	1819 char s1, s2 = s;
adamc@144	1820 int n;
adamc@136	1821
adamc@1023	1822 if (!fromClient) {
adamc@1023	1823 if (*s2 == '_')
adamc@1023	1824 ++s2;
adamc@1023	1825 else if (s2[0] == '%' && s2[1] == '5' && (s2[2] == 'f' \|\| s2[2] == 'F'))
adamc@1023	1826 s2 += 3;
adamc@1023	1827 }
adamc@925	1828
adamc@927	1829 for (s1 = r; *s2; ++s1, ++s2) {
adamc@1087	1830 unsigned char c = *s2;
adamc@136	1831
adamc@136	1832 switch (c) {
adamc@136	1833 case '+':
adamc@136	1834 *s1 = ' ';
adamc@136	1835 break;
adamc@136	1836 case '%':
adamc@169	1837 if (s2[1] == 0)
adamc@311	1838 uw_error(ctx, FATAL, "Missing first character of escaped URL byte");
adamc@169	1839 if (s2[2] == 0)
adamc@311	1840 uw_error(ctx, FATAL, "Missing second character of escaped URL byte");
adamc@169	1841 if (sscanf(s2+1, "%02X", &n) != 1)
adamc@311	1842 uw_error(ctx, FATAL, "Invalid escaped URL byte starting at: %s", s2);
adamc@136	1843 *s1 = n;
adamc@136	1844 s2 += 2;
adamc@136	1845 break;
adamc@136	1846 default:
adamc@136	1847 *s1 = c;
adamc@136	1848 }
adamc@136	1849 }
adamc@136	1850 *s1++ = 0;
adamc@144	1851 return s1;
adamc@144	1852 }
adamc@144	1853
adamc@311	1854 uw_Basis_bool uw_Basis_unurlifyBool(uw_context ctx, char **s) {
adamc@311	1855 char new_s = uw_unurlify_advance(s);
adamc@311	1856 uw_Basis_bool r;
adamc@186	1857
adamc@186	1858 if (s[0] == 0 \|\| !strcmp(s, "0") \|\| !strcmp(*s, "off"))
adamc@311	1859 r = uw_Basis_False;
adamc@186	1860 else
adamc@311	1861 r = uw_Basis_True;
adamc@186	1862
adamc@186	1863 *s = new_s;
adamc@186	1864 return r;
adamc@186	1865 }
adamc@186	1866
adamc@311	1867 uw_Basis_string uw_Basis_unurlifyString(uw_context ctx, char **s) {
adamc@311	1868 char new_s = uw_unurlify_advance(s);
adamc@1134	1869 char *r;
adamc@1134	1870 int len;
adamc@144	1871
adamc@200	1872 len = strlen(*s);
adamc@311	1873 uw_check_heap(ctx, len + 1);
adamc@144	1874
adamc@666	1875 r = ctx->heap.front;
adamc@1023	1876 ctx->heap.front = uw_unurlifyString_to(0, ctx, ctx->heap.front, *s);
adamc@1023	1877 *s = new_s;
adamc@1023	1878 return r;
adamc@1023	1879 }
adamc@1023	1880
adamc@1109	1881 uw_Basis_unit uw_Basis_unurlifyUnit(uw_context ctx, char **s) {
adamc@1109	1882 s = uw_unurlify_advance(s);
adamc@1109	1883 return uw_unit_v;
adamc@1109	1884 }
adamc@1109	1885
adamc@1023	1886 uw_Basis_string uw_Basis_unurlifyString_fromClient(uw_context ctx, char **s) {
adamc@1023	1887 char new_s = uw_unurlify_advance(s);
adamc@1134	1888 char *r;
adamc@1134	1889 int len;
adamc@1023	1890
adamc@1023	1891 len = strlen(*s);
adamc@1023	1892 uw_check_heap(ctx, len + 1);
adamc@1023	1893
adamc@1023	1894 r = ctx->heap.front;
adamc@1023	1895 ctx->heap.front = uw_unurlifyString_to(1, ctx, ctx->heap.front, *s);
adamc@136	1896 *s = new_s;
adamc@136	1897 return r;
adamc@120	1898 }
adamc@135	1899
adamc@135	1900
adamc@311	1901 char *uw_Basis_htmlifyInt(uw_context ctx, uw_Basis_int n) {
adamc@286	1902 int len;
adamc@286	1903 char *r;
adamc@286	1904
adamc@311	1905 uw_check_heap(ctx, INTS_MAX);
adamc@666	1906 r = ctx->heap.front;
adamc@286	1907 sprintf(r, "%lld%n", n, &len);
adamc@666	1908 ctx->heap.front += len+1;
adamc@286	1909 return r;
adamc@286	1910 }
adamc@286	1911
adamc@428	1912 uw_unit uw_Basis_htmlifyInt_w(uw_context ctx, uw_Basis_int n) {
adamc@286	1913 int len;
adamc@286	1914
adamc@311	1915 uw_check(ctx, INTS_MAX);
adamc@666	1916 sprintf(ctx->page.front, "%lld%n", n, &len);
adamc@666	1917 ctx->page.front += len;
adamc@428	1918
adamc@428	1919 return uw_unit_v;
adamc@286	1920 }
adamc@286	1921
adamc@311	1922 char *uw_Basis_htmlifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@286	1923 int len;
adamc@286	1924 char *r;
adamc@286	1925
adamc@311	1926 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	1927 r = ctx->heap.front;
adamc@286	1928 sprintf(r, "%g%n", n, &len);
adamc@666	1929 ctx->heap.front += len+1;
adamc@286	1930 return r;
adamc@286	1931 }
adamc@286	1932
adamc@428	1933 uw_unit uw_Basis_htmlifyFloat_w(uw_context ctx, uw_Basis_float n) {
adamc@286	1934 int len;
adamc@286	1935
adamc@311	1936 uw_check(ctx, FLOATS_MAX);
adamc@666	1937 sprintf(ctx->page.front, "%g%n", n, &len);
adamc@666	1938 ctx->page.front += len;
adamc@428	1939
adamc@428	1940 return uw_unit_v;
adamc@286	1941 }
adamc@286	1942
adamc@311	1943 char *uw_Basis_htmlifyString(uw_context ctx, uw_Basis_string s) {
adamc@137	1944 char r, s2;
adamc@137	1945
adamc@311	1946 uw_check_heap(ctx, strlen(s) * 5 + 1);
adamc@137	1947
adamc@666	1948 for (r = s2 = ctx->heap.front; *s; s++) {
adamc@1054	1949 unsigned char c = *s;
adamc@137	1950
adamc@137	1951 switch (c) {
adamc@137	1952 case '<':
adamc@137	1953 strcpy(s2, "<");
adamc@137	1954 s2 += 4;
adamc@137	1955 break;
adamc@137	1956 case '&':
adamc@137	1957 strcpy(s2, "&");
adamc@137	1958 s2 += 5;
adamc@137	1959 break;
adamc@137	1960 default:
adamc@1059	1961 *s2++ = c;
adamc@137	1962 }
adamc@137	1963 }
adamc@137	1964
adamc@137	1965 *s2++ = 0;
adamc@666	1966 ctx->heap.front = s2;
adamc@137	1967 return r;
adamc@135	1968 }
adamc@135	1969
adamc@428	1970 uw_unit uw_Basis_htmlifyString_w(uw_context ctx, uw_Basis_string s) {
adamc@321	1971 uw_check(ctx, strlen(s) * 6);
adamc@135	1972
adamc@135	1973 for (; *s; s++) {
adamc@1054	1974 unsigned char c = *s;
adamc@135	1975
adamc@135	1976 switch (c) {
adamc@135	1977 case '<':
adamc@311	1978 uw_write_unsafe(ctx, "<");
adamc@135	1979 break;
adamc@135	1980 case '&':
adamc@311	1981 uw_write_unsafe(ctx, "&");
adamc@135	1982 break;
adamc@135	1983 default:
adamc@1059	1984 uw_writec_unsafe(ctx, c);
adamc@135	1985 }
adamc@135	1986 }
adamc@428	1987
adamc@428	1988 return uw_unit_v;
adamc@135	1989 }
adamc@180	1990
adamc@311	1991 uw_Basis_string uw_Basis_htmlifyBool(uw_context ctx, uw_Basis_bool b) {
adamc@311	1992 if (b == uw_Basis_False)
adamc@286	1993 return "False";
adamc@286	1994 else
adamc@286	1995 return "True";
adamc@286	1996 }
adamc@286	1997
adamc@428	1998 uw_unit uw_Basis_htmlifyBool_w(uw_context ctx, uw_Basis_bool b) {
adamc@311	1999 if (b == uw_Basis_False) {
adamc@311	2000 uw_check(ctx, 6);
adamc@666	2001 strcpy(ctx->page.front, "False");
adamc@666	2002 ctx->page.front += 5;
adamc@286	2003 } else {
adamc@311	2004 uw_check(ctx, 5);
adamc@666	2005 strcpy(ctx->page.front, "True");
adamc@666	2006 ctx->page.front += 4;
adamc@286	2007 }
adamc@428	2008
adamc@428	2009 return uw_unit_v;
adamc@286	2010 }
adamc@286	2011
adamc@436	2012 #define TIME_FMT "%x %X"
adamc@438	2013 #define TIME_FMT_PG "%Y-%m-%d %T"
adamc@436	2014
adamc@436	2015 uw_Basis_string uw_Basis_htmlifyTime(uw_context ctx, uw_Basis_time t) {
adamc@436	2016 size_t len;
adamc@436	2017 char *r;
adamc@436	2018 struct tm stm;
adamc@436	2019
adamc@436	2020 if (localtime_r(&t, &stm)) {
adamc@436	2021 uw_check_heap(ctx, TIMES_MAX);
adamc@666	2022 r = ctx->heap.front;
adamc@436	2023 len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
adamc@666	2024 ctx->heap.front += len+1;
adamc@436	2025 return r;
adamc@436	2026 } else
adamc@436	2027 return "<i>Invalid time</i>";
adamc@436	2028 }
adamc@436	2029
adamc@436	2030 uw_unit uw_Basis_htmlifyTime_w(uw_context ctx, uw_Basis_time t) {
adamc@436	2031 size_t len;
adamc@436	2032 char *r;
adamc@436	2033 struct tm stm;
adamc@436	2034
adamc@436	2035 if (localtime_r(&t, &stm)) {
adamc@436	2036 uw_check(ctx, TIMES_MAX);
adamc@666	2037 r = ctx->page.front;
adamc@436	2038 len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
adamc@666	2039 ctx->page.front += len;
adamc@436	2040 } else {
adamc@436	2041 uw_check(ctx, 20);
adamc@666	2042 strcpy(ctx->page.front, "<i>Invalid time</i>");
adamc@666	2043 ctx->page.front += 19;
adamc@436	2044 }
adamc@436	2045
adamc@436	2046 return uw_unit_v;
adamc@436	2047 }
adamc@436	2048
adamc@821	2049 uw_Basis_char uw_Basis_strsub(uw_context ctx, uw_Basis_string s, uw_Basis_int n) {
adamc@821	2050 if (n >= 0 && n < strlen(s))
adamc@821	2051 return s[n];
adamc@821	2052 else
adamc@821	2053 uw_error(ctx, FATAL, "Out-of-bounds strsub");
adamc@821	2054 }
adamc@821	2055
adamc@821	2056 uw_Basis_string uw_Basis_strsuffix(uw_context ctx, uw_Basis_string s, uw_Basis_int n) {
adamc@821	2057 if (n >= 0 && n < strlen(s))
adamc@821	2058 return &s[n];
adamc@821	2059 else
adamc@821	2060 uw_error(ctx, FATAL, "Out-of-bounds strsuffix");
adamc@821	2061 }
adamc@821	2062
adamc@828	2063 uw_Basis_int uw_Basis_strlen(uw_context ctx, uw_Basis_string s) {
adamc@828	2064 return strlen(s);
adamc@828	2065 }
adamc@828	2066
adamc@829	2067 uw_Basis_string uw_Basis_strchr(uw_context ctx, uw_Basis_string s, uw_Basis_char ch) {
adamc@829	2068 return strchr(s, ch);
adamc@829	2069 }
adamc@829	2070
adamc@831	2071 uw_Basis_int uw_Basis_strcspn(uw_context ctx, uw_Basis_string s, uw_Basis_string chs) {
adamc@831	2072 return strcspn(s, chs);
adamc@831	2073 }
adamc@831	2074
adamc@829	2075 uw_Basis_int *uw_Basis_strindex(uw_context ctx, uw_Basis_string s, uw_Basis_char ch) {
adamc@829	2076 uw_Basis_string r = strchr(s, ch);
adamc@829	2077 if (r == NULL)
adamc@829	2078 return NULL;
adamc@829	2079 else {
adamc@829	2080 uw_Basis_int *nr = uw_malloc(ctx, sizeof(uw_Basis_int));
adamc@829	2081 *nr = r - s;
adamc@829	2082 return nr;
adamc@829	2083 }
adamc@829	2084 }
adamc@829	2085
adamc@311	2086 uw_Basis_string uw_Basis_strcat(uw_context ctx, uw_Basis_string s1, uw_Basis_string s2) {
adamc@828	2087 int len = uw_Basis_strlen(ctx, s1) + uw_Basis_strlen(ctx, s2) + 1;
adamc@180	2088 char *s;
adamc@180	2089
adamc@311	2090 uw_check_heap(ctx, len);
adamc@180	2091
adamc@666	2092 s = ctx->heap.front;
adamc@180	2093
adamc@180	2094 strcpy(s, s1);
adamc@180	2095 strcat(s, s2);
adamc@666	2096 ctx->heap.front += len;
adamc@180	2097
adamc@180	2098 return s;
adamc@180	2099 }
adamc@278	2100
adamc@829	2101 uw_Basis_string uw_Basis_substring(uw_context ctx, uw_Basis_string s, uw_Basis_int start, uw_Basis_int len) {
adamc@829	2102 size_t full_len = uw_Basis_strlen(ctx, s);
adamc@829	2103
adamc@829	2104 if (start < 0)
adamc@829	2105 uw_error(ctx, FATAL, "substring: Negative start index");
adamc@829	2106 if (len < 0)
adamc@829	2107 uw_error(ctx, FATAL, "substring: Negative length");
adamc@829	2108 if (start + len > full_len)
adamc@829	2109 uw_error(ctx, FATAL, "substring: Start index plus length is too large");
adamc@829	2110
adamc@829	2111 if (start + len == full_len)
adamc@829	2112 return &s[start];
adamc@829	2113 else {
adamc@829	2114 uw_Basis_string r = uw_malloc(ctx, len+1);
adamc@959	2115 memcpy(r, s+start, len);
adamc@829	2116 r[len] = 0;
adamc@829	2117 return r;
adamc@829	2118 }
adamc@829	2119
adamc@829	2120 }
adamc@829	2121
adamc@1023	2122 uw_Basis_string uw_Basis_str1(uw_context ctx, uw_Basis_char ch) {
adamc@1023	2123 char *r;
adamc@1023	2124
adamc@1023	2125 uw_check_heap(ctx, 2);
adamc@1023	2126 r = ctx->heap.front;
adamc@1023	2127 r[0] = ch;
adamc@1023	2128 r[1] = 0;
adamc@1023	2129
adamc@1023	2130 ctx->heap.front += 2;
adamc@1023	2131
adamc@1023	2132 return r;
adamc@1023	2133 }
adamc@1023	2134
adamc@737	2135 uw_Basis_string uw_strdup(uw_context ctx, uw_Basis_string s1) {
adamc@828	2136 int len = uw_Basis_strlen(ctx, s1) + 1;
adamc@278	2137 char *s;
adamc@278	2138
adamc@311	2139 uw_check_heap(ctx, len);
adamc@278	2140
adamc@666	2141 s = ctx->heap.front;
adamc@278	2142
adamc@278	2143 strcpy(s, s1);
adamc@666	2144 ctx->heap.front += len;
adamc@278	2145
adamc@278	2146 return s;
adamc@278	2147 }
adamc@280	2148
adamc@737	2149 uw_Basis_string uw_maybe_strdup(uw_context ctx, uw_Basis_string s1) {
adamc@493	2150 if (s1)
adamc@737	2151 return uw_strdup(ctx, s1);
adamc@493	2152 else
adamc@493	2153 return NULL;
adamc@493	2154 }
adamc@493	2155
adamc@742	2156 char uw_memdup(uw_context ctx, const char p, size_t len) {
adamc@742	2157 char *r = uw_malloc(ctx, len);
adamc@742	2158 memcpy(r, p, len);
adamc@742	2159 return r;
adamc@742	2160 }
adamc@280	2161
adamc@879	2162 char *uw_sqlfmtInt = "%lld::int8%n";
adamc@879	2163
adamc@311	2164 char *uw_Basis_sqlifyInt(uw_context ctx, uw_Basis_int n) {
adamc@281	2165 int len;
adamc@281	2166 char *r;
adamc@281	2167
adamc@311	2168 uw_check_heap(ctx, INTS_MAX + 6);
adamc@666	2169 r = ctx->heap.front;
adamc@879	2170 sprintf(r, uw_sqlfmtInt, n, &len);
adamc@666	2171 ctx->heap.front += len+1;
adamc@281	2172 return r;
adamc@281	2173 }
adamc@281	2174
adamc@467	2175 char uw_Basis_sqlifyIntN(uw_context ctx, uw_Basis_int n) {
adamc@467	2176 if (n == NULL)
adamc@467	2177 return "NULL";
adamc@467	2178 else
adamc@467	2179 return uw_Basis_sqlifyInt(ctx, *n);
adamc@467	2180 }
adamc@467	2181
adamc@879	2182 char *uw_sqlfmtFloat = "%g::float8%n";
adamc@879	2183
adamc@311	2184 char *uw_Basis_sqlifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@281	2185 int len;
adamc@281	2186 char *r;
adamc@281	2187
adamc@311	2188 uw_check_heap(ctx, FLOATS_MAX + 8);
adamc@666	2189 r = ctx->heap.front;
adamc@879	2190 sprintf(r, uw_sqlfmtFloat, n, &len);
adamc@666	2191 ctx->heap.front += len+1;
adamc@281	2192 return r;
adamc@281	2193 }
adamc@281	2194
adamc@467	2195 char uw_Basis_sqlifyFloatN(uw_context ctx, uw_Basis_float n) {
adamc@467	2196 if (n == NULL)
adamc@467	2197 return "NULL";
adamc@467	2198 else
adamc@467	2199 return uw_Basis_sqlifyFloat(ctx, *n);
adamc@467	2200 }
adamc@467	2201
adamc@879	2202 int uw_Estrings = 1;
adamc@879	2203 char *uw_sqlsuffixString = "::text";
adamc@1011	2204 char *uw_sqlsuffixChar = "::char";
adamc@281	2205
adamc@311	2206 uw_Basis_string uw_Basis_sqlifyString(uw_context ctx, uw_Basis_string s) {
adamc@280	2207 char r, s2;
adamc@280	2208
adamc@879	2209 uw_check_heap(ctx, strlen(s) * 2 + 3 + uw_Estrings + strlen(uw_sqlsuffixString));
adamc@280	2210
adamc@666	2211 r = s2 = ctx->heap.front;
adamc@879	2212 if (uw_Estrings)
adamc@879	2213 *s2++ = 'E';
adamc@280	2214 *s2++ = '\'';
adamc@280	2215
adamc@280	2216 for (; *s; s++) {
adamc@280	2217 char c = *s;
adamc@280	2218
adamc@280	2219 switch (c) {
adamc@280	2220 case '\'':
adamc@885	2221 if (uw_Estrings)
adamc@885	2222 strcpy(s2, "\\'");
adamc@885	2223 else
adamc@885	2224 strcpy(s2, "''");
adamc@280	2225 s2 += 2;
adamc@280	2226 break;
adamc@280	2227 case '\\':
adamc@885	2228 if (uw_Estrings) {
adamc@885	2229 strcpy(s2, "\\\\");
adamc@885	2230 s2 += 2;
adamc@885	2231 } else
adamc@885	2232 *s2++ = '\\';
adamc@280	2233 break;
adamc@280	2234 default:
adamc@1150	2235 if (isprint((int)c))
adamc@280	2236 *s2++ = c;
adamc@879	2237 else if (uw_Estrings) {
adamc@737	2238 sprintf(s2, "\\%03o", c);
adamc@280	2239 s2 += 4;
adamc@280	2240 }
adamc@879	2241 else
adamc@879	2242 uw_error(ctx, FATAL, "Non-printable character %u in string to SQLify", c);
adamc@280	2243 }
adamc@280	2244 }
adamc@280	2245
adamc@879	2246 *s2++ = '\'';
adamc@879	2247 strcpy(s2, uw_sqlsuffixString);
adamc@879	2248 ctx->heap.front = s2 + 1 + strlen(uw_sqlsuffixString);
adamc@280	2249 return r;
adamc@280	2250 }
adamc@281	2251
adamc@1011	2252 uw_Basis_string uw_Basis_sqlifyChar(uw_context ctx, uw_Basis_char c) {
adamc@1011	2253 char r, s2;
adamc@1011	2254
adamc@1011	2255 uw_check_heap(ctx, 5 + uw_Estrings + strlen(uw_sqlsuffixChar));
adamc@1011	2256
adamc@1011	2257 r = s2 = ctx->heap.front;
adamc@1011	2258 if (uw_Estrings)
adamc@1011	2259 *s2++ = 'E';
adamc@1011	2260 *s2++ = '\'';
adamc@1011	2261
adamc@1011	2262 switch (c) {
adamc@1011	2263 case '\'':
adamc@1011	2264 if (uw_Estrings)
adamc@1011	2265 strcpy(s2, "\\'");
adamc@1011	2266 else
adamc@1011	2267 strcpy(s2, "''");
adamc@1011	2268 s2 += 2;
adamc@1011	2269 break;
adamc@1011	2270 case '\\':
adamc@1011	2271 if (uw_Estrings) {
adamc@1011	2272 strcpy(s2, "\\\\");
adamc@1011	2273 s2 += 2;
adamc@1011	2274 } else
adamc@1011	2275 *s2++ = '\\';
adamc@1011	2276 break;
adamc@1011	2277 default:
adamc@1150	2278 if (isprint((int)c))
adamc@1011	2279 *s2++ = c;
adamc@1011	2280 else if (uw_Estrings) {
adamc@1011	2281 sprintf(s2, "\\%03o", c);
adamc@1011	2282 s2 += 4;
adamc@1011	2283 }
adamc@1011	2284 else
adamc@1011	2285 uw_error(ctx, FATAL, "Non-printable character %u in char to SQLify", c);
adamc@1011	2286 }
adamc@1011	2287
adamc@1011	2288 *s2++ = '\'';
adamc@1011	2289 strcpy(s2, uw_sqlsuffixChar);
adamc@1011	2290 ctx->heap.front = s2 + 1 + strlen(uw_sqlsuffixChar);
adamc@1011	2291 return r;
adamc@1011	2292 }
adamc@1011	2293
adamc@879	2294 char *uw_sqlsuffixBlob = "::bytea";
adamc@879	2295
adamc@737	2296 uw_Basis_string uw_Basis_sqlifyBlob(uw_context ctx, uw_Basis_blob b) {
adamc@737	2297 char r, s2;
adamc@737	2298 size_t i;
adamc@737	2299
adamc@879	2300 uw_check_heap(ctx, b.size * 5 + 3 + uw_Estrings + strlen(uw_sqlsuffixBlob));
adamc@737	2301
adamc@737	2302 r = s2 = ctx->heap.front;
adamc@879	2303 if (uw_Estrings)
adamc@879	2304 *s2++ = 'E';
adamc@737	2305 *s2++ = '\'';
adamc@737	2306
adamc@737	2307 for (i = 0; i < b.size; ++i) {
adamc@737	2308 char c = b.data[i];
adamc@737	2309
adamc@737	2310 switch (c) {
adamc@737	2311 case '\'':
adamc@885	2312 if (uw_Estrings)
adamc@885	2313 strcpy(s2, "\\'");
adamc@885	2314 else
adamc@885	2315 strcpy(s2, "''");
adamc@737	2316 s2 += 2;
adamc@737	2317 break;
adamc@737	2318 case '\\':
adamc@885	2319 if (uw_Estrings) {
adamc@885	2320 strcpy(s2, "\\\\\\\\");
adamc@885	2321 s2 += 4;
adamc@885	2322 } else
adamc@885	2323 *s2++ = '\\';
adamc@737	2324 break;
adamc@737	2325 default:
adamc@1150	2326 if (isprint((int)c))
adamc@737	2327 *s2++ = c;
adamc@879	2328 else if (uw_Estrings) {
adamc@737	2329 sprintf(s2, "\\\\%03o", c);
adamc@737	2330 s2 += 5;
adamc@737	2331 }
adamc@879	2332 else
adamc@879	2333 uw_error(ctx, FATAL, "Non-printable character %u in blob to SQLify", c);
adamc@737	2334 }
adamc@737	2335 }
adamc@737	2336
adamc@879	2337 *s2++ = '\'';
adamc@879	2338 strcpy(s2, uw_sqlsuffixBlob);
adamc@879	2339 ctx->heap.front = s2 + 1 + strlen(uw_sqlsuffixBlob);
adamc@737	2340 return r;
adamc@737	2341 }
adamc@737	2342
adamc@682	2343 char *uw_Basis_sqlifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	2344 int len;
adamc@682	2345 char *r;
adamc@682	2346 unsigned long long combo = ((unsigned long long)chn.cli << 32) \| chn.chn;
adamc@682	2347
adamc@682	2348 uw_check_heap(ctx, INTS_MAX + 7);
adamc@682	2349 r = ctx->heap.front;
adamc@879	2350 sprintf(r, uw_sqlfmtInt, combo, &len);
adamc@682	2351 ctx->heap.front += len+1;
adamc@682	2352 return r;
adamc@682	2353 }
adamc@682	2354
adamc@682	2355 char *uw_Basis_attrifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	2356 int len;
adamc@682	2357 char *r;
adamc@682	2358 unsigned long long combo = ((unsigned long long)chn.cli << 32) \| chn.chn;
adamc@682	2359
adamc@682	2360 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	2361 r = ctx->heap.front;
adamc@682	2362 sprintf(r, "%lld%n", combo, &len);
adamc@682	2363 ctx->heap.front += len+1;
adamc@682	2364 return r;
adamc@682	2365 }
adamc@682	2366
adamc@879	2367 char *uw_sqlfmtUint4 = "%u::int4%n";
adamc@879	2368
adamc@682	2369 char *uw_Basis_sqlifyClient(uw_context ctx, uw_Basis_client cli) {
adamc@682	2370 int len;
adamc@682	2371 char *r;
adamc@682	2372
adamc@682	2373 uw_check_heap(ctx, INTS_MAX + 7);
adamc@682	2374 r = ctx->heap.front;
adamc@879	2375 sprintf(r, uw_sqlfmtUint4, cli, &len);
adamc@682	2376 ctx->heap.front += len+1;
adamc@682	2377 return r;
adamc@682	2378 }
adamc@682	2379
adamc@682	2380 char *uw_Basis_attrifyClient(uw_context ctx, uw_Basis_client cli) {
adamc@682	2381 int len;
adamc@682	2382 char *r;
adamc@682	2383
adamc@682	2384 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	2385 r = ctx->heap.front;
adamc@682	2386 sprintf(r, "%u%n", cli, &len);
adamc@682	2387 ctx->heap.front += len+1;
adamc@682	2388 return r;
adamc@682	2389 }
adamc@682	2390
adamc@467	2391 uw_Basis_string uw_Basis_sqlifyStringN(uw_context ctx, uw_Basis_string s) {
adamc@467	2392 if (s == NULL)
adamc@467	2393 return "NULL";
adamc@467	2394 else
adamc@467	2395 return uw_Basis_sqlifyString(ctx, s);
adamc@467	2396 }
adamc@467	2397
adamc@311	2398 char *uw_Basis_sqlifyBool(uw_context ctx, uw_Basis_bool b) {
adamc@311	2399 if (b == uw_Basis_False)
adamc@281	2400 return "FALSE";
adamc@281	2401 else
adamc@281	2402 return "TRUE";
adamc@281	2403 }
adamc@282	2404
adamc@467	2405 char uw_Basis_sqlifyBoolN(uw_context ctx, uw_Basis_bool b) {
adamc@467	2406 if (b == NULL)
adamc@467	2407 return "NULL";
adamc@467	2408 else
adamc@467	2409 return uw_Basis_sqlifyBool(ctx, *b);
adamc@467	2410 }
adamc@467	2411
adamc@439	2412 char *uw_Basis_sqlifyTime(uw_context ctx, uw_Basis_time t) {
adamc@439	2413 size_t len;
adamc@682	2414 char r, s;
adamc@682	2415 struct tm stm;
adamc@682	2416
adamc@682	2417 if (localtime_r(&t, &stm)) {
adamc@682	2418 s = uw_malloc(ctx, TIMES_MAX);
adamc@682	2419 len = strftime(s, TIMES_MAX, TIME_FMT, &stm);
adamc@682	2420 r = uw_malloc(ctx, len + 14);
adamc@682	2421 sprintf(r, "'%s'::timestamp", s);
adamc@682	2422 return r;
adamc@682	2423 } else
adamc@682	2424 return "<Invalid time>";
adamc@682	2425 }
adamc@682	2426
adamc@682	2427 char *uw_Basis_attrifyTime(uw_context ctx, uw_Basis_time t) {
adamc@682	2428 size_t len;
adamc@439	2429 char *r;
adamc@439	2430 struct tm stm;
adamc@439	2431
adamc@439	2432 if (localtime_r(&t, &stm)) {
adamc@439	2433 uw_check_heap(ctx, TIMES_MAX);
adamc@666	2434 r = ctx->heap.front;
adamc@439	2435 len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
adamc@666	2436 ctx->heap.front += len+1;
adamc@439	2437 return r;
adamc@439	2438 } else
adamc@439	2439 return "<Invalid time>";
adamc@439	2440 }
adamc@439	2441
adamc@467	2442 char uw_Basis_sqlifyTimeN(uw_context ctx, uw_Basis_time t) {
adamc@467	2443 if (t == NULL)
adamc@467	2444 return "NULL";
adamc@467	2445 else
adamc@467	2446 return uw_Basis_sqlifyTime(ctx, *t);
adamc@467	2447 }
adamc@467	2448
adamc@311	2449 char *uw_Basis_ensqlBool(uw_Basis_bool b) {
adamc@311	2450 static uw_Basis_int true = 1;
adamc@311	2451 static uw_Basis_int false = 0;
adamc@282	2452
adamc@311	2453 if (b == uw_Basis_False)
adamc@282	2454 return (char *)&false;
adamc@282	2455 else
adamc@282	2456 return (char *)&true;
adamc@282	2457 }
adamc@284	2458
adamc@311	2459 uw_Basis_string uw_Basis_intToString(uw_context ctx, uw_Basis_int n) {
adamc@284	2460 int len;
adamc@284	2461 char *r;
adamc@284	2462
adamc@311	2463 uw_check_heap(ctx, INTS_MAX);
adamc@666	2464 r = ctx->heap.front;
adamc@284	2465 sprintf(r, "%lld%n", n, &len);
adamc@666	2466 ctx->heap.front += len+1;
adamc@284	2467 return r;
adamc@284	2468 }
adamc@285	2469
adamc@311	2470 uw_Basis_string uw_Basis_floatToString(uw_context ctx, uw_Basis_float n) {
adamc@285	2471 int len;
adamc@285	2472 char *r;
adamc@285	2473
adamc@311	2474 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	2475 r = ctx->heap.front;
adamc@285	2476 sprintf(r, "%g%n", n, &len);
adamc@666	2477 ctx->heap.front += len+1;
adamc@285	2478 return r;
adamc@285	2479 }
adamc@285	2480
adamc@821	2481 uw_Basis_string uw_Basis_charToString(uw_context ctx, uw_Basis_char ch) {
adamc@821	2482 char *r = uw_malloc(ctx, 2);
adamc@821	2483 r[0] = ch;
adamc@821	2484 r[1] = 0;
adamc@821	2485 return r;
adamc@821	2486 }
adamc@821	2487
adamc@311	2488 uw_Basis_string uw_Basis_boolToString(uw_context ctx, uw_Basis_bool b) {
adamc@311	2489 if (b == uw_Basis_False)
adamc@285	2490 return "False";
adamc@285	2491 else
adamc@285	2492 return "True";
adamc@285	2493 }
adamc@288	2494
adamc@436	2495 uw_Basis_string uw_Basis_timeToString(uw_context ctx, uw_Basis_time t) {
adamc@436	2496 size_t len;
adamc@436	2497 char *r;
adamc@436	2498 struct tm stm;
adamc@436	2499
adamc@436	2500 if (localtime_r(&t, &stm)) {
adamc@436	2501 uw_check_heap(ctx, TIMES_MAX);
adamc@666	2502 r = ctx->heap.front;
adamc@436	2503 len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
adamc@666	2504 ctx->heap.front += len+1;
adamc@436	2505 return r;
adamc@436	2506 } else
adamc@436	2507 return "<Invalid time>";
adamc@436	2508 }
adamc@288	2509
adamc@311	2510 uw_Basis_int *uw_Basis_stringToInt(uw_context ctx, uw_Basis_string s) {
adamc@288	2511 char *endptr;
adamc@311	2512 uw_Basis_int n = strtoll(s, &endptr, 10);
adamc@288	2513
adamc@288	2514 if (s != '\0' && endptr == '\0') {
adamc@311	2515 uw_Basis_int *r = uw_malloc(ctx, sizeof(uw_Basis_int));
adamc@288	2516 *r = n;
adamc@288	2517 return r;
adamc@288	2518 } else
adamc@288	2519 return NULL;
adamc@288	2520 }
adamc@289	2521
adamc@311	2522 uw_Basis_float *uw_Basis_stringToFloat(uw_context ctx, uw_Basis_string s) {
adamc@289	2523 char *endptr;
adamc@311	2524 uw_Basis_float n = strtod(s, &endptr);
adamc@289	2525
adamc@289	2526 if (s != '\0' && endptr == '\0') {
adamc@311	2527 uw_Basis_float *r = uw_malloc(ctx, sizeof(uw_Basis_float));
adamc@289	2528 *r = n;
adamc@289	2529 return r;
adamc@289	2530 } else
adamc@289	2531 return NULL;
adamc@289	2532 }
adamc@289	2533
adamc@821	2534 uw_Basis_char *uw_Basis_stringToChar(uw_context ctx, uw_Basis_string s) {
adamc@821	2535 if (s[0] == 0) {
adamc@821	2536 uw_Basis_char *r = uw_malloc(ctx, 1);
adamc@821	2537 r[0] = 0;
adamc@821	2538 return r;
adamc@821	2539 } else if (s[1] != 0)
adamc@821	2540 return NULL;
adamc@821	2541 else {
adamc@821	2542 uw_Basis_char *r = uw_malloc(ctx, 1);
adamc@821	2543 r[0] = s[0];
adamc@821	2544 return r;
adamc@821	2545 }
adamc@821	2546 }
adamc@821	2547
adamc@311	2548 uw_Basis_bool *uw_Basis_stringToBool(uw_context ctx, uw_Basis_string s) {
adamc@311	2549 static uw_Basis_bool true = uw_Basis_True;
adamc@311	2550 static uw_Basis_bool false = uw_Basis_False;
adamc@289	2551
adamc@289	2552 if (!strcasecmp (s, "True"))
adamc@289	2553 return &true;
adamc@289	2554 else if (!strcasecmp (s, "False"))
adamc@289	2555 return &false;
adamc@289	2556 else
adamc@289	2557 return NULL;
adamc@289	2558 }
adamc@292	2559
adamc@436	2560 uw_Basis_time *uw_Basis_stringToTime(uw_context ctx, uw_Basis_string s) {
adamc@438	2561 char dot = strchr(s, '.'), end = strchr(s, 0);
adamc@436	2562 struct tm stm;
adamc@436	2563
adamc@439	2564 if (dot) {
adamc@439	2565 *dot = 0;
adamc@439	2566 if (strptime(s, TIME_FMT_PG, &stm) == end) {
adamc@439	2567 *dot = '.';
adamc@439	2568 uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
adamc@439	2569 *r = mktime(&stm);
adamc@439	2570 return r;
adamc@439	2571 }
adamc@439	2572 else {
adamc@439	2573 *dot = '.';
adamc@439	2574 return NULL;
adamc@439	2575 }
adamc@436	2576 }
adamc@439	2577 else {
adamc@439	2578 if (strptime(s, TIME_FMT_PG, &stm) == end) {
adamc@439	2579 uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
adamc@439	2580 *r = mktime(&stm);
adamc@439	2581 return r;
adamc@439	2582 }
adamc@439	2583 else if (strptime(s, TIME_FMT, &stm) == end) {
adamc@439	2584 uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
adamc@439	2585 *r = mktime(&stm);
adamc@439	2586 return r;
adamc@439	2587 }
adamc@439	2588 else
adamc@439	2589 return NULL;
adamc@439	2590 }
adamc@436	2591 }
adamc@436	2592
adamc@311	2593 uw_Basis_int uw_Basis_stringToInt_error(uw_context ctx, uw_Basis_string s) {
adamc@292	2594 char *endptr;
adamc@311	2595 uw_Basis_int n = strtoll(s, &endptr, 10);
adamc@292	2596
adamc@292	2597 if (s != '\0' && endptr == '\0')
adamc@292	2598 return n;
adamc@292	2599 else
adamc@311	2600 uw_error(ctx, FATAL, "Can't parse int: %s", s);
adamc@292	2601 }
adamc@293	2602
adamc@682	2603 #include <errno.h>
adamc@682	2604
adamc@678	2605 uw_Basis_channel uw_Basis_stringToChannel_error(uw_context ctx, uw_Basis_string s) {
adamc@682	2606 unsigned long long n;
adamc@682	2607
adamc@682	2608 if (sscanf(s, "%llu", &n) < 1)
adamc@682	2609 uw_error(ctx, FATAL, "Can't parse channel: %s", s);
adamc@682	2610 else {
adamc@682	2611 uw_Basis_channel ch = {n >> 32, n & ((1ull << 32) - 1)};
adamc@682	2612 return ch;
adamc@682	2613 }
adamc@682	2614 }
adamc@682	2615
adamc@682	2616 uw_Basis_client uw_Basis_stringToClient_error(uw_context ctx, uw_Basis_string s) {
adamc@678	2617 char *endptr;
adamc@682	2618 unsigned long n = strtoul(s, &endptr, 10);
adamc@678	2619
adamc@678	2620 if (s != '\0' && endptr == '\0')
adamc@678	2621 return n;
adamc@678	2622 else
adamc@682	2623 uw_error(ctx, FATAL, "Can't parse client: %s", s);
adamc@678	2624 }
adamc@678	2625
adamc@311	2626 uw_Basis_float uw_Basis_stringToFloat_error(uw_context ctx, uw_Basis_string s) {
adamc@293	2627 char *endptr;
adamc@311	2628 uw_Basis_float n = strtod(s, &endptr);
adamc@293	2629
adamc@293	2630 if (s != '\0' && endptr == '\0')
adamc@293	2631 return n;
adamc@293	2632 else
adamc@311	2633 uw_error(ctx, FATAL, "Can't parse float: %s", s);
adamc@293	2634 }
adamc@293	2635
adamc@821	2636 uw_Basis_char uw_Basis_stringToChar_error(uw_context ctx, uw_Basis_string s) {
adamc@821	2637 if (s[0] == 0)
adamc@821	2638 return 0;
adamc@821	2639 else if (s[1] != 0)
adamc@821	2640 uw_error(ctx, FATAL, "Can't parse char: %s", s);
adamc@821	2641 else
adamc@821	2642 return s[0];
adamc@821	2643 }
adamc@821	2644
adamc@311	2645 uw_Basis_bool uw_Basis_stringToBool_error(uw_context ctx, uw_Basis_string s) {
adamc@296	2646 if (!strcasecmp(s, "T") \|\| !strcasecmp (s, "True"))
adamc@311	2647 return uw_Basis_True;
adamc@296	2648 else if (!strcasecmp(s, "F") \|\| !strcasecmp (s, "False"))
adamc@311	2649 return uw_Basis_False;
adamc@293	2650 else
adamc@311	2651 uw_error(ctx, FATAL, "Can't parse bool: %s", s);
adamc@293	2652 }
adamc@436	2653
adamc@436	2654 uw_Basis_time uw_Basis_stringToTime_error(uw_context ctx, uw_Basis_string s) {
adamc@438	2655 char dot = strchr(s, '.'), end = strchr(s, 0);
adamc@436	2656 struct tm stm = {};
adamc@436	2657
adamc@438	2658 if (dot) {
adamc@438	2659 *dot = 0;
adamc@438	2660 if (strptime(s, TIME_FMT_PG, &stm)) {
adamc@438	2661 *dot = '.';
adamc@438	2662 return mktime(&stm);
adamc@438	2663 }
adamc@438	2664 else {
adamc@438	2665 *dot = '.';
adamc@438	2666 uw_error(ctx, FATAL, "Can't parse time: %s", s);
adamc@438	2667 }
adamc@438	2668 }
adamc@438	2669 else {
adamc@439	2670 if (strptime(s, TIME_FMT_PG, &stm) == end)
adamc@439	2671 return mktime(&stm);
adamc@439	2672 else if (strptime(s, TIME_FMT, &stm) == end)
adamc@438	2673 return mktime(&stm);
adamc@438	2674 else
adamc@438	2675 uw_error(ctx, FATAL, "Can't parse time: %s", s);
adamc@438	2676 }
adamc@436	2677 }
adamc@457	2678
adamc@939	2679 uw_Basis_time uw_Basis_unsqlTime(uw_context ctx, uw_Basis_string s) {
adamc@939	2680 char dot = strchr(s, '.'), end = strchr(s, 0);
adamc@939	2681 struct tm stm = {};
adamc@939	2682
adamc@939	2683 if (dot) {
adamc@939	2684 *dot = 0;
adamc@939	2685 if (strptime(s, TIME_FMT_PG, &stm)) {
adamc@939	2686 *dot = '.';
adamc@939	2687 return mktime(&stm);
adamc@939	2688 }
adamc@939	2689 else {
adamc@939	2690 *dot = '.';
adamc@939	2691 uw_error(ctx, FATAL, "Can't parse time: %s", s);
adamc@939	2692 }
adamc@939	2693 }
adamc@939	2694 else {
adamc@939	2695 if (strptime(s, TIME_FMT_PG, &stm) == end) {
adamc@939	2696 return mktime(&stm);
adamc@939	2697 } else if (strptime(s, TIME_FMT, &stm) == end) {
adamc@939	2698 return mktime(&stm);
adamc@939	2699 } else
adamc@939	2700 uw_error(ctx, FATAL, "Can't parse time: %s", s);
adamc@939	2701 }
adamc@939	2702 }
adamc@939	2703
adamc@742	2704 uw_Basis_blob uw_Basis_stringToBlob_error(uw_context ctx, uw_Basis_string s, size_t len) {
adamc@742	2705 char *r = ctx->heap.front;
adamc@742	2706 uw_Basis_blob b = {len, r};
adamc@742	2707
adamc@742	2708 uw_check_heap(ctx, len);
adamc@742	2709
adamc@742	2710 while (*s) {
adamc@742	2711 if (s[0] == '\\') {
adamc@742	2712 if (s[1] == '\\') {
adamc@742	2713 *r++ = '\\';
adamc@742	2714 s += 2;
adamc@1153	2715 } else if (isdigit((int)s[1]) && isdigit((int)s[2]) && isdigit((int)s[3])) {
adamc@742	2716 r++ = (s[1] - '0') 8 * 8 + ((s[2] - '0') * 8) + (s[3] - '0');
adamc@742	2717 s += 4;
adamc@742	2718 }
adamc@742	2719 else {
adamc@742	2720 *r++ = '\\';
adamc@742	2721 ++s;
adamc@742	2722 }
adamc@742	2723 } else {
adamc@742	2724 *r++ = s[0];
adamc@742	2725 ++s;
adamc@742	2726 }
adamc@742	2727 }
adamc@742	2728
adamc@742	2729 b.size = r - ctx->heap.front;
adamc@742	2730 ctx->heap.front = r;
adamc@742	2731 return b;
adamc@742	2732 }
adamc@742	2733
adamc@1052	2734 #define THE_PAST "expires=Mon, 01-01-1970 00:00:00 GMT"
adamc@1052	2735
adamc@463	2736 uw_Basis_string uw_Basis_get_cookie(uw_context ctx, uw_Basis_string c) {
adamc@463	2737 int len = strlen(c);
adamc@854	2738 char *p = ctx->outHeaders.start;
adamc@474	2739
adamc@1134	2740 while ((p = strstr(p, "\nSet-Cookie: "))) {
adamc@474	2741 char *p2;
adamc@474	2742 p += 13;
adamc@474	2743 p2 = strchr(p, '=');
adamc@474	2744
adamc@474	2745 if (p2) {
adamc@474	2746 size_t sz = strcspn(p2+1, ";\r\n");
adamc@474	2747
adamc@474	2748 if (!strncasecmp(p, c, p2 - p)) {
adamc@1052	2749 if (sz == 0 && strstr(p2+2, THE_PAST))
adamc@1052	2750 return NULL;
adamc@1052	2751 else {
adamc@1052	2752 char *ret = uw_malloc(ctx, sz + 1);
adamc@1052	2753 memcpy(ret, p2+1, sz);
adamc@1052	2754 ret[sz] = 0;
adamc@1052	2755 return ret;
adamc@1052	2756 }
adamc@474	2757 }
adamc@474	2758 }
adamc@474	2759 }
adamc@463	2760
adamc@1134	2761 if ((p = uw_Basis_requestHeader(ctx, "Cookie"))) {
adamc@1051	2762 char *p2;
adamc@1051	2763
adamc@854	2764 while (1) {
adamc@1051	2765 if (!strncmp(p, c, len) && p[len] == '=') {
adamc@1134	2766 if ((p2 = strchr(p, ';'))) {
adamc@1051	2767 size_t n = p2 - (p + len);
adamc@1051	2768 char *r = uw_malloc(ctx, n);
adamc@1051	2769 memcpy(r, p + 1 + len, n-1);
adamc@1051	2770 r[n-1] = 0;
adamc@1051	2771 return r;
adamc@1051	2772 } else
adamc@1051	2773 return p + 1 + len;
adamc@1134	2774 } else if ((p = strchr(p, ';')))
adamc@854	2775 p += 2;
adamc@463	2776 else
adamc@463	2777 return NULL;
adamc@463	2778 }
adamc@463	2779 }
adamc@792	2780
adamc@792	2781 return NULL;
adamc@457	2782 }
adamc@462	2783
adamc@1050	2784 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	2785 uw_write_header(ctx, "Set-Cookie: ");
adamc@462	2786 uw_write_header(ctx, c);
adamc@462	2787 uw_write_header(ctx, "=");
adamc@462	2788 uw_write_header(ctx, v);
adamc@466	2789 uw_write_header(ctx, "; path=");
adamc@466	2790 uw_write_header(ctx, prefix);
adamc@1050	2791 if (expires) {
adamc@1050	2792 char formatted[30];
adamc@1050	2793 struct tm tm;
adamc@1050	2794
adamc@1050	2795 gmtime_r(expires, &tm);
adamc@1050	2796
adamc@1050	2797 strftime(formatted, sizeof formatted, "%a, %d-%b-%Y %T GMT", &tm);
adamc@1050	2798
adamc@1050	2799 uw_write_header(ctx, "; expires=");
adamc@1050	2800 uw_write_header(ctx, formatted);
adamc@1050	2801 }
adamc@1050	2802 if (secure)
adamc@1050	2803 uw_write_header(ctx, "; secure");
adamc@462	2804 uw_write_header(ctx, "\r\n");
adamc@462	2805
adamc@462	2806 return uw_unit_v;
adamc@462	2807 }
adamc@667	2808
adamc@1050	2809 uw_unit uw_Basis_clear_cookie(uw_context ctx, uw_Basis_string prefix, uw_Basis_string c) {
adamc@1050	2810 uw_write_header(ctx, "Set-Cookie: ");
adamc@1050	2811 uw_write_header(ctx, c);
adamc@1050	2812 uw_write_header(ctx, "=; path=");
adamc@1050	2813 uw_write_header(ctx, prefix);
adamc@1052	2814 uw_write_header(ctx, "; " THE_PAST "\r\n");
adamc@1050	2815
adamc@1050	2816 return uw_unit_v;
adamc@1050	2817 }
adamc@1050	2818
adamc@1113	2819 size_t uw_deltas_max = SIZE_MAX;
adamc@1113	2820
adamc@682	2821 static delta *allocate_delta(uw_context ctx, unsigned client) {
adamc@682	2822 unsigned i;
adamc@682	2823 delta *d;
adamc@671	2824
adamc@682	2825 for (i = 0; i < ctx->used_deltas; ++i)
adamc@682	2826 if (ctx->deltas[i].client == client)
adamc@682	2827 return &ctx->deltas[i];
adamc@671	2828
adamc@682	2829 if (ctx->used_deltas >= ctx->n_deltas) {
adamc@1113	2830 if (ctx->n_deltas + 1 > uw_deltas_max)
adamc@1113	2831 uw_error(ctx, FATAL, "Exceeded limit on number of deltas");
adamc@1113	2832
adamc@682	2833 ctx->deltas = realloc(ctx->deltas, sizeof(delta) * ++ctx->n_deltas);
adamc@1113	2834 buf_init(uw_messages_max, &ctx->deltas[ctx->n_deltas-1].msgs, 0);
adamc@682	2835 }
adamc@671	2836
adamc@682	2837 d = &ctx->deltas[ctx->used_deltas++];
adamc@682	2838 d->client = client;
adamc@682	2839 buf_reset(&d->msgs);
adamc@682	2840 return d;
adamc@671	2841 }
adamc@671	2842
adamc@668	2843 uw_Basis_channel uw_Basis_new_channel(uw_context ctx, uw_unit u) {
adamc@682	2844 if (ctx->client == NULL)
adamc@682	2845 uw_error(ctx, FATAL, "Attempt to create channel on request not associated with a persistent connection");
adamc@671	2846
adamc@682	2847 return new_channel(ctx->client);
adamc@668	2848 }
adamc@668	2849
adamc@668	2850 uw_unit uw_Basis_send(uw_context ctx, uw_Basis_channel chn, uw_Basis_string msg) {
adamc@682	2851 delta *d = allocate_delta(ctx, chn.cli);
adamc@682	2852 size_t len;
adamc@682	2853 int preLen;
adamc@682	2854 char pre[INTS_MAX + 2];
adamc@668	2855
adamc@682	2856 len = strlen(msg);
adamc@682	2857
adamc@682	2858 sprintf(pre, "%u\n%n", chn.chn, &preLen);
adamc@682	2859
adamc@1113	2860 ctx_buf_append(ctx, "messages", &d->msgs, pre, preLen);
adamc@1113	2861 ctx_buf_append(ctx, "messages", &d->msgs, msg, len);
adamc@1113	2862 ctx_buf_append(ctx, "messages", &d->msgs, "\n", 1);
adamc@671	2863
adamc@671	2864 return uw_unit_v;
adamc@668	2865 }
adamc@671	2866
adamc@1131	2867 int uw_rollback(uw_context ctx) {
adamc@1131	2868 int i;
adamc@1131	2869 cleanup *cl;
adamc@1131	2870
adamc@1131	2871 if (ctx->client)
adamc@1131	2872 release_client(ctx->client);
adamc@1131	2873
adamc@1131	2874 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adamc@1131	2875 cl->func(cl->arg);
adamc@1131	2876
adamc@1131	2877 ctx->cleanup_front = ctx->cleanup;
adamc@1131	2878
adamc@1131	2879 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@1131	2880 if (ctx->transactionals[i].rollback != NULL)
adamc@1131	2881 ctx->transactionals[i].rollback(ctx->transactionals[i].data);
adamc@1131	2882
adamc@1131	2883 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@1131	2884 if (ctx->transactionals[i].free)
adamc@1131	2885 ctx->transactionals[i].free(ctx->transactionals[i].data);
adamc@1131	2886
adamc@1144	2887 return ctx->app ? ctx->app->db_rollback(ctx) : 0;
adamc@1131	2888 }
adamc@1131	2889
adamc@671	2890 void uw_commit(uw_context ctx) {
adamc@1104	2891 int i;
adamc@1104	2892
adamc@1131	2893 if (uw_has_error(ctx)) {
adamc@1131	2894 uw_rollback(ctx);
adamc@1131	2895 return;
adamc@1131	2896 }
adamc@1131	2897
adamc@1104	2898 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@771	2899 if (ctx->transactionals[i].rollback != NULL)
adamc@1131	2900 if (ctx->transactionals[i].commit) {
adamc@1083	2901 ctx->transactionals[i].commit(ctx->transactionals[i].data);
adamc@1131	2902 if (uw_has_error(ctx)) {
adamc@1131	2903 uw_rollback(ctx);
adamc@1131	2904 return;
adamc@1131	2905 }
adamc@1131	2906 }
adamc@771	2907
adamc@1104	2908 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@771	2909 if (ctx->transactionals[i].rollback == NULL)
adamc@1131	2910 if (ctx->transactionals[i].commit) {
adamc@1083	2911 ctx->transactionals[i].commit(ctx->transactionals[i].data);
adamc@1131	2912 if (uw_has_error(ctx)) {
adamc@1131	2913 uw_rollback(ctx);
adamc@1131	2914 return;
adamc@1131	2915 }
adamc@1131	2916 }
adamc@1131	2917
adamc@1131	2918 if (ctx->app->db_commit(ctx)) {
adamc@1131	2919 uw_set_error_message(ctx, "Error running SQL COMMIT");
adamc@1131	2920 return;
adamc@1131	2921 }
adamc@682	2922
adamc@682	2923 for (i = 0; i < ctx->used_deltas; ++i) {
adamc@682	2924 delta *d = &ctx->deltas[i];
adamc@682	2925 client *c = find_client(d->client);
adamc@682	2926
adamc@682	2927 assert (c != NULL && c->mode == USED);
adamc@682	2928
adamc@685	2929 client_send(c, &d->msgs);
adamc@682	2930 }
adamc@682	2931
adamc@682	2932 if (ctx->client)
adamc@685	2933 release_client(ctx->client);
adamc@771	2934
adamc@1104	2935 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@1083	2936 if (ctx->transactionals[i].free)
adamc@1083	2937 ctx->transactionals[i].free(ctx->transactionals[i].data);
adamc@916	2938
adamc@916	2939 // Splice script data into appropriate part of page
adamc@1065	2940 if (ctx->returning_indirectly \|\| ctx->script_header[0] == 0) {
adamc@995	2941 char *start = strstr(ctx->page.start, "<sc>");
adamc@995	2942 if (start) {
adamc@995	2943 memmove(start, start + 4, buf_used(&ctx->page) - (start - ctx->page.start) - 4);
adamc@995	2944 ctx->page.front -= 4;
adamc@995	2945 }
adamc@995	2946 } else if (buf_used(&ctx->script) == 0) {
adamc@916	2947 size_t len = strlen(ctx->script_header);
adamc@916	2948 char *start = strstr(ctx->page.start, "<sc>");
adamc@916	2949 if (start) {
adamc@1113	2950 ctx_buf_check(ctx, "page", &ctx->page, buf_used(&ctx->page) - 4 + len);
adamc@917	2951 start = strstr(ctx->page.start, "<sc>");
adamc@916	2952 memmove(start + len, start + 4, buf_used(&ctx->page) - (start - ctx->page.start) - 3);
adamc@916	2953 ctx->page.front += len - 4;
adamc@916	2954 memcpy(start, ctx->script_header, len);
adamc@916	2955 }
adamc@916	2956 } else {
adamc@916	2957 size_t lenH = strlen(ctx->script_header), len = buf_used(&ctx->script);
adamc@916	2958 size_t lenP = lenH + 40 + len;
adamc@916	2959 char *start = strstr(ctx->page.start, "<sc>");
adamc@916	2960 if (start) {
adamc@1113	2961 ctx_buf_check(ctx, "page", &ctx->page, buf_used(&ctx->page) - 4 + lenP);
adamc@917	2962 start = strstr(ctx->page.start, "<sc>");
adamc@916	2963 memmove(start + lenP, start + 4, buf_used(&ctx->page) - (start - ctx->page.start) - 3);
adamc@916	2964 ctx->page.front += lenP - 4;
adamc@916	2965 memcpy(start, ctx->script_header, lenH);
adamc@916	2966 memcpy(start + lenH, "<script type=\"text/javascript\">", 31);
adamc@916	2967 memcpy(start + lenH + 31, ctx->script.start, len);
adamc@916	2968 memcpy(start + lenH + 31 + len, "</script>", 9);
adamc@916	2969 }
adamc@916	2970 }
adamc@671	2971 }
adamc@671	2972
adamc@683	2973
adamc@1113	2974 size_t uw_transactionals_max = SIZE_MAX;
adamc@1113	2975
adamc@771	2976 void uw_register_transactional(uw_context ctx, void *data, uw_callback commit, uw_callback rollback,
adamc@771	2977 uw_callback free) {
adamc@771	2978 if (ctx->used_transactionals >= ctx->n_transactionals) {
adamc@1113	2979 if (ctx->used_transactionals+1 > uw_transactionals_max)
adamc@1113	2980 uw_error(ctx, FATAL, "Exceeded limit on number of transactionals");
adamc@1084	2981 ctx->transactionals = realloc(ctx->transactionals, sizeof(transactional) * (ctx->used_transactionals+1));
adamc@771	2982 ++ctx->n_transactionals;
adamc@771	2983 }
adamc@771	2984
adamc@771	2985 ctx->transactionals[ctx->used_transactionals].data = data;
adamc@771	2986 ctx->transactionals[ctx->used_transactionals].commit = commit;
adamc@771	2987 ctx->transactionals[ctx->used_transactionals].rollback = rollback;
adamc@771	2988 ctx->transactionals[ctx->used_transactionals++].free = free;
adamc@771	2989 }
adamc@771	2990
adamc@683	2991
adamc@683	2992 // "Garbage collection"
adamc@683	2993
adamc@1121	2994 void uw_do_expunge(uw_context ctx, uw_Basis_client cli, void *data);
adamc@1121	2995 void uw_post_expunge(uw_context ctx, void *data);
adamc@1121	2996
adamc@1121	2997 static failure_kind uw_expunge(uw_context ctx, uw_Basis_client cli, void *data) {
adamc@683	2998 int r = setjmp(ctx->jmp_buf);
adamc@683	2999
adamc@1121	3000 if (r == 0)
adamc@1121	3001 uw_do_expunge(ctx, cli, data);
adamc@1121	3002 else
adamc@1121	3003 ctx->app->db_rollback(ctx);
adamc@1121	3004
adamc@1121	3005 uw_post_expunge(ctx, data);
adamc@683	3006
adamc@683	3007 return r;
adamc@683	3008 }
adamc@683	3009
adamc@683	3010 void uw_prune_clients(uw_context ctx) {
adamc@683	3011 client c, next, *prev = NULL;
adamc@683	3012 time_t cutoff;
adamc@683	3013
adamc@1094	3014 cutoff = time(NULL) - ctx->app->timeout;
adamc@683	3015
adamc@683	3016 pthread_mutex_lock(&clients_mutex);
adamc@683	3017
adamc@683	3018 for (c = clients_used; c; c = next) {
adamc@683	3019 next = c->next;
adamc@683	3020 pthread_mutex_lock(&c->lock);
adamc@685	3021 if (c->last_contact < cutoff && c->refcount == 0) {
adamc@683	3022 failure_kind fk = UNLIMITED_RETRY;
adamc@683	3023 if (prev)
adamc@683	3024 prev->next = next;
adamc@683	3025 else
adamc@683	3026 clients_used = next;
adamc@684	3027 uw_reset(ctx);
adamc@683	3028 while (fk == UNLIMITED_RETRY) {
adamc@1121	3029 fk = uw_expunge(ctx, c->id, c->data);
adamc@1121	3030 if (fk == UNLIMITED_RETRY)
adamc@684	3031 printf("Unlimited retry during expunge: %s\n", uw_error_message(ctx));
adamc@683	3032 }
adamc@684	3033 if (fk == SUCCESS)
adamc@684	3034 free_client(c);
adamc@1121	3035 else
adamc@856	3036 fprintf(stderr, "Expunge blocked by error: %s\n", uw_error_message(ctx));
adamc@683	3037 }
adamc@683	3038 else
adamc@683	3039 prev = c;
adamc@683	3040 pthread_mutex_unlock(&c->lock);
adamc@683	3041 }
adamc@683	3042
adamc@683	3043 pthread_mutex_unlock(&clients_mutex);
adamc@683	3044 }
adamc@687	3045
adamc@687	3046 failure_kind uw_initialize(uw_context ctx) {
adamc@687	3047 int r = setjmp(ctx->jmp_buf);
adamc@687	3048
adamc@687	3049 if (r == 0) {
adamc@1094	3050 if (ctx->app->db_begin(ctx))
adamc@687	3051 uw_error(ctx, FATAL, "Error running SQL BEGIN");
adamc@1094	3052 ctx->app->initializer(ctx);
adamc@1094	3053 if (ctx->app->db_commit(ctx))
adamc@687	3054 uw_error(ctx, FATAL, "Error running SQL COMMIT");
adamc@687	3055 }
adamc@687	3056
adamc@687	3057 return r;
adamc@687	3058 }
adamc@717	3059
adamc@1065	3060 static int url_bad(uw_Basis_string s) {
adamc@1065	3061 for (; *s; ++s)
adamc@1153	3062 if (!isgraph((int)*s))
adamc@1065	3063 return 1;
adamc@1065	3064
adamc@1065	3065 return 0;
adamc@1065	3066 }
adamc@1065	3067
adamc@717	3068 uw_Basis_string uw_Basis_bless(uw_context ctx, uw_Basis_string s) {
adamc@1065	3069 if (url_bad(s))
adamc@1065	3070 uw_error(ctx, FATAL, "Invalid URL %s", uw_Basis_htmlifyString(ctx, s));
adamc@1094	3071 if (ctx->app->check_url(s))
adamc@770	3072 return s;
adamc@770	3073 else
adamc@770	3074 uw_error(ctx, FATAL, "Disallowed URL %s", uw_Basis_htmlifyString(ctx, s));
adamc@717	3075 }
adamc@734	3076
adamc@770	3077 uw_Basis_string uw_Basis_checkUrl(uw_context ctx, uw_Basis_string s) {
adamc@1065	3078 if (url_bad(s))
adamc@1065	3079 return NULL;
adamc@1094	3080 if (ctx->app->check_url(s))
adamc@770	3081 return s;
adamc@770	3082 else
adamc@770	3083 return NULL;
adamc@770	3084 }
adamc@770	3085
adamc@770	3086 int mime_format(const char *s) {
adamc@770	3087 for (; *s; ++s)
adamc@1153	3088 if (!isalnum((int)s) && s != '/' && s != '-' && s != '.')
adamc@770	3089 return 0;
adamc@770	3090
adamc@770	3091 return 1;
adamc@770	3092 }
adamc@770	3093
adamc@741	3094 uw_Basis_string uw_Basis_blessMime(uw_context ctx, uw_Basis_string s) {
adamc@770	3095 if (!mime_format(s))
adamc@770	3096 uw_error(ctx, FATAL, "MIME type \"%s\" contains invalid character", uw_Basis_htmlifyString(ctx, s));
adamc@770	3097
adamc@1094	3098 if (ctx->app->check_mime(s))
adamc@770	3099 return s;
adamc@770	3100 else
adamc@770	3101 uw_error(ctx, FATAL, "Disallowed MIME type %s", uw_Basis_htmlifyString(ctx, s));
adamc@770	3102 }
adamc@770	3103
adamc@770	3104 uw_Basis_string uw_Basis_checkMime(uw_context ctx, uw_Basis_string s) {
adamc@770	3105 if (!mime_format(s))
adamc@770	3106 return NULL;
adamc@770	3107
adamc@1094	3108 if (ctx->app->check_mime(s))
adamc@770	3109 return s;
adamc@770	3110 else
adamc@770	3111 return NULL;
adamc@741	3112 }
adamc@741	3113
adamc@734	3114 uw_Basis_string uw_unnull(uw_Basis_string s) {
adamc@734	3115 return s ? s : "";
adamc@734	3116 }
adamc@734	3117
adamc@734	3118 extern int uw_hash_blocksize;
adamc@734	3119
adamc@734	3120 uw_Basis_string uw_Basis_makeSigString(uw_context ctx, uw_Basis_string sig) {
adamc@734	3121 uw_Basis_string r = uw_malloc(ctx, 2 * uw_hash_blocksize + 1);
adamc@734	3122 int i;
adamc@734	3123
adamc@734	3124 for (i = 0; i < uw_hash_blocksize; ++i)
adamc@734	3125 sprintf(&r[2i], "%.02X", ((unsigned char )sig)[i]);
adamc@734	3126
adamc@734	3127 return r;
adamc@734	3128 }
adamc@734	3129
adamc@734	3130 uw_Basis_string uw_Basis_sigString(uw_context ctx, uw_unit u) {
adamc@1094	3131 return ctx->app->cookie_sig(ctx);
adamc@734	3132 }
adamc@737	3133
adamc@737	3134 uw_Basis_string uw_Basis_fileName(uw_context ctx, uw_Basis_file f) {
adamc@737	3135 return f.name;
adamc@737	3136 }
adamc@737	3137
adamc@740	3138 uw_Basis_string uw_Basis_fileMimeType(uw_context ctx, uw_Basis_file f) {
adamc@740	3139 return f.type;
adamc@740	3140 }
adamc@740	3141
adamc@745	3142 uw_Basis_int uw_Basis_blobSize(uw_context ctx, uw_Basis_blob b) {
adamc@745	3143 return b.size;
adamc@745	3144 }
adamc@745	3145
adamc@1119	3146 uw_Basis_blob uw_Basis_textBlob(uw_context ctx, uw_Basis_string s) {
adamc@1119	3147 uw_Basis_blob b = {strlen(s), s};
adamc@1119	3148
adamc@1119	3149 return b;
adamc@1119	3150 }
adamc@1119	3151
adamc@737	3152 uw_Basis_blob uw_Basis_fileData(uw_context ctx, uw_Basis_file f) {
adamc@737	3153 return f.data;
adamc@737	3154 }
adamc@741	3155
adamc@741	3156 __attribute__((noreturn)) void uw_return_blob(uw_context ctx, uw_Basis_blob b, uw_Basis_string mimeType) {
adamc@741	3157 cleanup *cl;
adamc@741	3158 int len;
adamc@741	3159
adamc@1065	3160 ctx->returning_indirectly = 1;
adamc@741	3161 buf_reset(&ctx->outHeaders);
adamc@741	3162 buf_reset(&ctx->page);
adamc@741	3163
adamc@856	3164 uw_write_header(ctx, on_success);
adamc@856	3165 uw_write_header(ctx, "Content-Type: ");
adamc@741	3166 uw_write_header(ctx, mimeType);
adamc@741	3167 uw_write_header(ctx, "\r\nContent-Length: ");
adamc@1113	3168 ctx_buf_check(ctx, "headers", &ctx->outHeaders, INTS_MAX);
adamc@1134	3169 sprintf(ctx->outHeaders.front, "%lu%n", (unsigned long)b.size, &len);
adamc@741	3170 ctx->outHeaders.front += len;
adamc@1066	3171 uw_write_header(ctx, "\r\n");
adamc@741	3172
adamc@1113	3173 ctx_buf_append(ctx, "page", &ctx->page, b.data, b.size);
adamc@741	3174
adamc@741	3175 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adamc@741	3176 cl->func(cl->arg);
adamc@741	3177
adamc@741	3178 ctx->cleanup_front = ctx->cleanup;
adamc@741	3179
adamc@1065	3180 longjmp(ctx->jmp_buf, RETURN_INDIRECTLY);
adamc@1065	3181 }
adamc@1065	3182
adamc@1065	3183 __attribute__((noreturn)) void uw_redirect(uw_context ctx, uw_Basis_string url) {
adamc@1065	3184 cleanup *cl;
adamc@1066	3185 char *s;
adamc@1065	3186
adamc@1065	3187 ctx->returning_indirectly = 1;
adamc@1066	3188 buf_reset(&ctx->page);
adamc@1113	3189 ctx_buf_check(ctx, "page", &ctx->page, buf_used(&ctx->outHeaders)+1);
adamc@1066	3190 memcpy(ctx->page.start, ctx->outHeaders.start, buf_used(&ctx->outHeaders));
adamc@1066	3191 ctx->page.start[buf_used(&ctx->outHeaders)] = 0;
adamc@1065	3192 buf_reset(&ctx->outHeaders);
adamc@1065	3193
adamc@1065	3194 uw_write_header(ctx, on_redirect);
adamc@1066	3195
adamc@1066	3196 s = strchr(ctx->page.start, '\n');
adamc@1066	3197 if (s) {
adamc@1066	3198 char *s2;
adamc@1134	3199 for (++s; (s2 = strchr(s, '\n')); s = s2+1) {
adamc@1066	3200 *s2 = 0;
adamc@1066	3201 if (!strncmp(s, "Set-Cookie: ", 12)) {
adamc@1066	3202 uw_write_header(ctx, s);
adamc@1066	3203 uw_write_header(ctx, "\n");
adamc@1066	3204 }
adamc@1066	3205 }
adamc@1066	3206 }
adamc@1066	3207
adamc@1065	3208 uw_write_header(ctx, "Location: ");
adamc@1065	3209 uw_write_header(ctx, url);
adamc@1065	3210 uw_write_header(ctx, "\r\n\r\n");
adamc@1065	3211
adamc@1065	3212 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adamc@1065	3213 cl->func(cl->arg);
adamc@1065	3214
adamc@1065	3215 ctx->cleanup_front = ctx->cleanup;
adamc@1065	3216
adamc@1065	3217 longjmp(ctx->jmp_buf, RETURN_INDIRECTLY);
adamc@741	3218 }
adamc@874	3219
adamc@874	3220 uw_Basis_string uw_Basis_unAs(uw_context ctx, uw_Basis_string s) {
adamc@874	3221 uw_Basis_string r = uw_malloc(ctx, strlen(s) + 1);
adamc@874	3222
adamc@874	3223 for (; *s; ++s) {
adamc@874	3224 if (s[0] == '\'') {
adamc@874	3225 *r++ = '\'';
adamc@874	3226 for (++s; *s; ++s) {
adamc@874	3227 if (s[0] == '\'') {
adamc@874	3228 *r++ = '\'';
adamc@874	3229 break;
adamc@874	3230 } else if (s[0] == '\\') {
adamc@874	3231 if (s[1] == '\\') {
adamc@874	3232 *r++ = '\\';
adamc@874	3233 *r++ = '\\';
adamc@874	3234 ++s;
adamc@874	3235 } else if (s[1] == '\'') {
adamc@874	3236 *r++ = '\\';
adamc@874	3237 *r++ = '\'';
adamc@874	3238 ++s;
adamc@874	3239 } else
adamc@874	3240 *r++ = '\'';
adamc@874	3241 } else
adamc@874	3242 *r++ = s[0];
adamc@874	3243 }
adamc@874	3244 if (*s == 0) break;
adamc@874	3245 } else if (s[0] == 'T' && s[1] == '.')
adamc@874	3246 ++s;
adamc@874	3247 else
adamc@874	3248 *r++ = s[0];
adamc@874	3249 }
adamc@874	3250
adamc@874	3251 return r;
adamc@874	3252 }
adamc@874	3253
adamc@922	3254 uw_Basis_string uw_Basis_mstrcat(uw_context ctx, ...) {
adamc@922	3255 va_list ap;
adamc@922	3256 size_t len = 1;
adamc@922	3257 char s, r, *s2;
adamc@922	3258
adamc@922	3259 va_start(ap, ctx);
adamc@922	3260 for (s = va_arg(ap, char); s; s = va_arg(ap, char))
adamc@922	3261 len += strlen(s);
adamc@922	3262 va_end(ap);
adamc@922	3263
adamc@922	3264 r = uw_malloc(ctx, len);
adamc@922	3265 va_start(ap, ctx);
adamc@922	3266 for (s2 = r, s = va_arg(ap, char); s; s = va_arg(ap, char))
adamc@922	3267 while (*s)
adamc@922	3268 s2++ = s++;
adamc@922	3269 va_end(ap);
adamc@922	3270 *s2 = 0;
adamc@922	3271
adamc@922	3272 return r;
adamc@922	3273 }
adamc@1006	3274
adamc@1050	3275 const uw_Basis_time minTime = 0;
adamc@1050	3276
adamc@1006	3277 uw_Basis_time uw_Basis_now(uw_context ctx) {
adamc@1006	3278 return time(NULL);
adamc@1006	3279 }
adamc@1061	3280
adamc@1138	3281 uw_Basis_time uw_Basis_minusSeconds(uw_context ctx, uw_Basis_time tm, uw_Basis_int n) {
adamc@1138	3282 return tm - n;
adamc@1138	3283 }
adamc@1138	3284
adamc@1061	3285 void uw_get_global(uw_context ctx, char name) {
adamc@1061	3286 int i;
adamc@1061	3287
adamc@1061	3288 for (i = 0; i < ctx->n_globals; ++i)
adamc@1061	3289 if (!strcmp(name, ctx->globals[i].name))
adamc@1061	3290 return ctx->globals[i].data;
adamc@1061	3291
adamc@1061	3292 return NULL;
adamc@1061	3293 }
adamc@1061	3294
adamc@1113	3295 size_t uw_globals_max = SIZE_MAX;
adamc@1113	3296
adamc@1061	3297 void uw_set_global(uw_context ctx, char name, void data, void (free)(void)) {
adamc@1061	3298 int i;
adamc@1061	3299
adamc@1061	3300 for (i = 0; i < ctx->n_globals; ++i)
adamc@1061	3301 if (!strcmp(name, ctx->globals[i].name)) {
adamc@1089	3302 if (ctx->globals[i].free)
adamc@1061	3303 ctx->globals[i].free(ctx->globals[i].data);
adamc@1061	3304 ctx->globals[i].data = data;
adamc@1061	3305 ctx->globals[i].free = free;
adamc@1061	3306 return;
adamc@1061	3307 }
adamc@1089	3308
adamc@1113	3309 if (ctx->n_globals+1 > uw_globals_max)
adamc@1113	3310 uw_error(ctx, FATAL, "Exceeded limit on number of globals");
adamc@1113	3311
adamc@1061	3312 ++ctx->n_globals;
adamc@1061	3313 ctx->globals = realloc(ctx->globals, ctx->n_globals * sizeof(global));
adamc@1061	3314 ctx->globals[ctx->n_globals-1].name = name;
adamc@1061	3315 ctx->globals[ctx->n_globals-1].data = data;
adamc@1061	3316 ctx->globals[ctx->n_globals-1].free = free;
adamc@1061	3317 }
adamc@1061	3318
adamc@1061	3319 uw_Basis_bool uw_Basis_isalnum(uw_context ctx, uw_Basis_char c) {
adamc@1153	3320 return !!isalnum((int)c);
adamc@1061	3321 }
adamc@1061	3322
adamc@1061	3323 uw_Basis_bool uw_Basis_isalpha(uw_context ctx, uw_Basis_char c) {
adamc@1153	3324 return !!isalpha((int)c);
adamc@1061	3325 }
adamc@1061	3326
adamc@1061	3327 uw_Basis_bool uw_Basis_isblank(uw_context ctx, uw_Basis_char c) {
adamc@1153	3328 return !!isblank((int)c);
adamc@1061	3329 }
adamc@1061	3330
adamc@1061	3331 uw_Basis_bool uw_Basis_iscntrl(uw_context ctx, uw_Basis_char c) {
adamc@1153	3332 return !!iscntrl((int)c);
adamc@1061	3333 }
adamc@1061	3334
adamc@1061	3335 uw_Basis_bool uw_Basis_isdigit(uw_context ctx, uw_Basis_char c) {
adamc@1153	3336 return !!isdigit((int)c);
adamc@1061	3337 }
adamc@1061	3338
adamc@1061	3339 uw_Basis_bool uw_Basis_isgraph(uw_context ctx, uw_Basis_char c) {
adamc@1153	3340 return !!isgraph((int)c);
adamc@1061	3341 }
adamc@1061	3342
adamc@1061	3343 uw_Basis_bool uw_Basis_islower(uw_context ctx, uw_Basis_char c) {
adamc@1153	3344 return !!islower((int)c);
adamc@1061	3345 }
adamc@1061	3346
adamc@1061	3347 uw_Basis_bool uw_Basis_isprint(uw_context ctx, uw_Basis_char c) {
adamc@1153	3348 return !!isprint((int)c);
adamc@1061	3349 }
adamc@1061	3350
adamc@1061	3351 uw_Basis_bool uw_Basis_ispunct(uw_context ctx, uw_Basis_char c) {
adamc@1153	3352 return !!ispunct((int)c);
adamc@1061	3353 }
adamc@1061	3354
adamc@1061	3355 uw_Basis_bool uw_Basis_isspace(uw_context ctx, uw_Basis_char c) {
adamc@1153	3356 return !!isspace((int)c);
adamc@1061	3357 }
adamc@1063	3358
adamc@1061	3359 uw_Basis_bool uw_Basis_isupper(uw_context ctx, uw_Basis_char c) {
adamc@1153	3360 return !!isupper((int)c);
adamc@1061	3361 }
adamc@1061	3362
adamc@1061	3363 uw_Basis_bool uw_Basis_isxdigit(uw_context ctx, uw_Basis_char c) {
adamc@1153	3364 return !!isxdigit((int)c);
adamc@1061	3365 }
adamc@1061	3366
adamc@1061	3367 uw_Basis_char uw_Basis_tolower(uw_context ctx, uw_Basis_char c) {
adamc@1153	3368 return tolower((int)c);
adamc@1061	3369 }
adamc@1061	3370
adamc@1061	3371 uw_Basis_char uw_Basis_toupper(uw_context ctx, uw_Basis_char c) {
adamc@1153	3372 return toupper((int)c);
adamc@1061	3373 }
adamc@1066	3374
adamc@1128	3375 uw_Basis_int uw_Basis_ord(uw_context ctx, uw_Basis_char c) {
adamc@1128	3376 return (unsigned char)c;
adamc@1128	3377 }
adamc@1128	3378
adamc@1128	3379 uw_Basis_char uw_Basis_chr(uw_context ctx, uw_Basis_int n) {
adamc@1128	3380 return n;
adamc@1128	3381 }
adamc@1128	3382
adamc@1066	3383 uw_Basis_string uw_Basis_currentUrl(uw_context ctx) {
adamc@1066	3384 return ctx->current_url;
adamc@1066	3385 }
adamc@1066	3386
adamc@1066	3387 void uw_set_currentUrl(uw_context ctx, char *s) {
adamc@1066	3388 ctx->current_url = s;
adamc@1066	3389 }
adamc@1114	3390
adamc@1114	3391 void uw_set_deadline(uw_context ctx, int n) {
adamc@1114	3392 ctx->deadline = n;
adamc@1114	3393 }
adamc@1114	3394
adamc@1114	3395 void uw_check_deadline(uw_context ctx) {
adamc@1114	3396 if (uw_time > ctx->deadline)
adamc@1114	3397 uw_error(ctx, FATAL, "Maximum running time exceeded");
adamc@1114	3398 }
adamc@1115	3399
adamc@1115	3400 size_t uw_database_max = SIZE_MAX;
adamc@1120	3401
adamc@1120	3402 uw_Basis_unit uw_Basis_debug(uw_context ctx, uw_Basis_string s) {
adamc@1120	3403 fprintf(stderr, "%s\n", s);
adamc@1120	3404
adamc@1120	3405 return uw_unit_v;
adamc@1120	3406 }

Mercurial > urweb

annotate src/c/urweb.c @ 1241:58f5ac1bb849