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

annotate src/c/urweb.c @ 1118:87b0a9d08e73

uw_close()

author	Adam Chlipala <adamc@hcoop.net>
date	Tue, 05 Jan 2010 14:57:35 -0500
parents	31ef567fa772
children	951fced704d6

rev	line source
adamc@1094	1 #define _XOPEN_SOURCE 600
adamc@436	2
adamc@117	3 #include <stdlib.h>
adamc@102	4 #include <stdio.h>
adamc@117	5 #include <string.h>
adamc@457	6 #include <strings.h>
adamc@106	7 #include <ctype.h>
adamc@167	8 #include <setjmp.h>
adamc@167	9 #include <stdarg.h>
adamc@682	10 #include <assert.h>
adamc@741	11 #include <ctype.h>
adamc@1114	12 #include <limits.h>
adamc@1113	13 #include <stdint.h>
adamc@1094	14 #include <sys/types.h>
adamc@1094	15 #include <sys/socket.h>
adamc@102	16
adamc@667	17 #include <pthread.h>
adamc@667	18
adamc@102	19 #include "types.h"
adamc@102	20
adamc@311	21 uw_unit uw_unit_v = {};
adamc@102	22
adamc@667	23
adamc@667	24 // Socket extras
adamc@667	25
adamc@863	26 int uw_really_send(int sock, const void *buf, ssize_t len) {
adamc@667	27 while (len > 0) {
adamc@856	28 ssize_t n = send(sock, buf, len, 0);
adamc@856	29
adamc@856	30 if (n < 0)
adamc@856	31 return n;
adamc@856	32
adamc@856	33 buf += n;
adamc@856	34 len -= n;
adamc@856	35 }
adamc@856	36
adamc@856	37 return 0;
adamc@856	38 }
adamc@856	39
adamc@856	40 int uw_really_write(int fd, const void *buf, size_t len) {
adamc@856	41 while (len > 0) {
adamc@856	42 ssize_t n = write(fd, buf, len);
adamc@667	43
adamc@667	44 if (n < 0)
adamc@667	45 return n;
adamc@667	46
adamc@667	47 buf += n;
adamc@667	48 len -= n;
adamc@667	49 }
adamc@667	50
adamc@667	51 return 0;
adamc@667	52 }
adamc@667	53
adamc@667	54
adamc@667	55 // Buffers
adamc@667	56
adamc@667	57 typedef struct {
adamc@1113	58 size_t max;
adamc@667	59 char start, front, *back;
adamc@667	60 } buf;
adamc@667	61
adamc@1113	62 static void buf_init(size_t max, buf *b, size_t s) {
adamc@1113	63 b->max = max;
adamc@667	64 b->front = b->start = malloc(s);
adamc@667	65 b->back = b->front + s;
adamc@667	66 }
adamc@667	67
adamc@667	68 static void buf_free(buf *b) {
adamc@667	69 free(b->start);
adamc@667	70 }
adamc@667	71
adamc@667	72 static void buf_reset(buf *b) {
adamc@667	73 b->front = b->start;
adamc@667	74 }
adamc@667	75
adamc@1113	76 static int buf_check(buf *b, size_t extra) {
adamc@667	77 if (b->back - b->front < extra) {
adamc@667	78 size_t desired = b->front - b->start + extra, next;
adamc@667	79 char *new_heap;
adamc@667	80
adamc@667	81 next = b->back - b->start;
adamc@667	82 if (next == 0)
adamc@667	83 next = 1;
adamc@667	84 for (; next < desired; next *= 2);
adamc@667	85
adamc@1113	86 if (next > b->max)
adamc@1113	87 if (desired <= b->max)
adamc@1113	88 next = desired;
adamc@1113	89 else
adamc@1113	90 return 1;
adamc@1113	91
adamc@667	92 new_heap = realloc(b->start, next);
adamc@667	93 b->front = new_heap + (b->front - b->start);
adamc@667	94 b->back = new_heap + next;
adamc@667	95 b->start = new_heap;
adamc@667	96 }
adamc@1113	97
adamc@1113	98 return 0;
adamc@1113	99 }
adamc@1113	100
adamc@1113	101 __attribute__((noreturn)) void uw_error(uw_context, failure_kind, const char *, ...);
adamc@1113	102
adamc@1113	103 static void ctx_buf_check(uw_context ctx, const char kind, buf b, size_t extra) {
adamc@1113	104 if (buf_check(b, extra))
adamc@1113	105 uw_error(ctx, FATAL, "Memory limit exceeded (%s)", kind);
adamc@667	106 }
adamc@667	107
adamc@667	108 static size_t buf_used(buf *b) {
adamc@667	109 return b->front - b->start;
adamc@667	110 }
adamc@667	111
adamc@667	112 static size_t buf_avail(buf *b) {
adamc@667	113 return b->back - b->start;
adamc@667	114 }
adamc@667	115
adamc@1113	116 static int buf_append(buf b, const char s, size_t len) {
adamc@1113	117 if (buf_check(b, len+1))
adamc@1113	118 return 1;
adamc@1113	119
adamc@1113	120 memcpy(b->front, s, len);
adamc@1113	121 b->front += len;
adamc@1113	122 *b->front = 0;
adamc@1113	123
adamc@1113	124 return 0;
adamc@1113	125 }
adamc@1113	126
adamc@1113	127 static void ctx_buf_append(uw_context ctx, const char kind, buf b, const char *s, size_t len) {
adamc@1113	128 ctx_buf_check(ctx, kind, b, len+1);
adamc@1113	129
adamc@668	130 memcpy(b->front, s, len);
adamc@668	131 b->front += len;
adamc@672	132 *b->front = 0;
adamc@668	133 }
adamc@667	134
adamc@668	135
adamc@672	136 // Persistent state types
adamc@667	137
adamc@667	138 typedef enum { UNUSED, USED } usage;
adamc@667	139
adamc@667	140 typedef struct client {
adamc@682	141 unsigned id;
adamc@667	142 usage mode;
adamc@682	143 int pass;
adamc@682	144 struct client *next;
adamc@689	145 pthread_mutex_t lock, pull_lock;
adamc@682	146 buf msgs;
adamc@682	147 int sock;
adamc@863	148 int (send)(int sockfd, const void buf, ssize_t len);
adamc@863	149 int (*close)(int fd);
adamc@682	150 time_t last_contact;
adamc@682	151 unsigned n_channels;
adamc@685	152 unsigned refcount;
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@682	166 static client *new_client() {
adamc@667	167 client *c;
adamc@667	168
adamc@667	169 pthread_mutex_lock(&clients_mutex);
adamc@667	170
adamc@667	171 if (clients_free) {
adamc@667	172 c = clients_free;
adamc@682	173 clients_free = clients_free->next;
adamc@667	174 }
adamc@1113	175 else if (n_clients >= uw_clients_max)
adamc@1113	176 return NULL;
adamc@667	177 else {
adamc@667	178 ++n_clients;
adamc@667	179 clients = realloc(clients, sizeof(client) * n_clients);
adamc@667	180 c = malloc(sizeof(client));
adamc@667	181 c->id = n_clients-1;
adamc@682	182 pthread_mutex_init(&c->lock, NULL);
adamc@689	183 pthread_mutex_init(&c->pull_lock, NULL);
adamc@1113	184 buf_init(uw_messages_max, &c->msgs, 0);
adamc@667	185 clients[n_clients-1] = c;
adamc@667	186 }
adamc@667	187
adamc@682	188 pthread_mutex_lock(&c->lock);
adamc@667	189 c->mode = USED;
adamc@682	190 c->pass = rand();
adamc@682	191 c->sock = -1;
adamc@682	192 c->last_contact = time(NULL);
adamc@682	193 buf_reset(&c->msgs);
adamc@682	194 c->n_channels = 0;
adamc@685	195 c->refcount = 0;
adamc@682	196 pthread_mutex_unlock(&c->lock);
adamc@682	197
adamc@682	198 c->next = clients_used;
adamc@682	199 clients_used = c;
adamc@667	200
adamc@667	201 pthread_mutex_unlock(&clients_mutex);
adamc@667	202
adamc@667	203 return c;
adamc@667	204 }
adamc@667	205
adamc@685	206 static void use_client(client *c) {
adamc@685	207 pthread_mutex_lock(&c->lock);
adamc@685	208 ++c->refcount;
adamc@685	209 pthread_mutex_unlock(&c->lock);
adamc@689	210 pthread_mutex_lock(&c->pull_lock);
adamc@685	211 }
adamc@685	212
adamc@685	213 static void release_client(client *c) {
adamc@689	214 pthread_mutex_unlock(&c->pull_lock);
adamc@685	215 pthread_mutex_lock(&c->lock);
adamc@685	216 --c->refcount;
adamc@685	217 pthread_mutex_unlock(&c->lock);
adamc@689	218
adamc@685	219 }
adamc@685	220
adamc@856	221 static const char begin_msgs[] = "Content-type: text/plain\r\n\r\n";
adamc@667	222
adamc@682	223 static client *find_client(unsigned id) {
adamc@667	224 client *c;
adamc@667	225
adamc@667	226 pthread_mutex_lock(&clients_mutex);
adamc@667	227
adamc@667	228 if (id >= n_clients) {
adamc@667	229 pthread_mutex_unlock(&clients_mutex);
adamc@668	230 return NULL;
adamc@667	231 }
adamc@667	232
adamc@667	233 c = clients[id];
adamc@667	234
adamc@668	235 pthread_mutex_unlock(&clients_mutex);
adamc@668	236 return c;
adamc@668	237 }
adamc@668	238
adamc@856	239 static char *on_success = "HTTP/1.1 200 OK\r\n";
adamc@1065	240 static char *on_redirect = "HTTP/1.1 303 See Other\r\n";
adamc@856	241
adamc@856	242 void uw_set_on_success(char *s) {
adamc@856	243 on_success = s;
adamc@856	244 }
adamc@856	245
adamc@863	246 void uw_client_connect(unsigned id, int pass, int sock,
adamc@863	247 int (send)(int sockfd, const void buf, ssize_t len),
adamc@864	248 int (*close)(int fd),
adamc@864	249 void *logger_data, uw_logger log_error) {
adamc@682	250 client *c = find_client(id);
adamc@668	251
adamc@668	252 if (c == NULL) {
adamc@667	253 close(sock);
adamc@864	254 log_error(logger_data, "Out-of-bounds client request (%u)\n", id);
adamc@667	255 return;
adamc@667	256 }
adamc@667	257
adamc@682	258 pthread_mutex_lock(&c->lock);
adamc@671	259
adamc@682	260 if (c->mode != USED) {
adamc@682	261 pthread_mutex_unlock(&c->lock);
adamc@667	262 close(sock);
adamc@864	263 log_error(logger_data, "Client request for unused slot (%u)\n", id);
adamc@667	264 return;
adamc@667	265 }
adamc@667	266
adamc@682	267 if (pass != c->pass) {
adamc@682	268 pthread_mutex_unlock(&c->lock);
adamc@682	269 close(sock);
adamc@864	270 log_error(logger_data, "Wrong client password (%u, %d)\n", id, pass);
adamc@682	271 return;
adamc@667	272 }
adamc@667	273
adamc@682	274 if (c->sock != -1) {
adamc@863	275 c->close(c->sock);
adamc@682	276 c->sock = -1;
adamc@682	277 }
adamc@667	278
adamc@682	279 c->last_contact = time(NULL);
adamc@682	280
adamc@682	281 if (buf_used(&c->msgs) > 0) {
adamc@863	282 send(sock, on_success, strlen(on_success));
adamc@863	283 send(sock, begin_msgs, sizeof(begin_msgs) - 1);
adamc@863	284 send(sock, c->msgs.start, buf_used(&c->msgs));
adamc@682	285 buf_reset(&c->msgs);
adamc@667	286 close(sock);
adamc@667	287 }
adamc@863	288 else {
adamc@682	289 c->sock = sock;
adamc@863	290 c->send = send;
adamc@863	291 c->close = close;
adamc@863	292 }
adamc@667	293
adamc@682	294 pthread_mutex_unlock(&c->lock);
adamc@667	295 }
adamc@667	296
adamc@682	297 static void free_client(client *c) {
adamc@682	298 c->mode = UNUSED;
adamc@682	299 c->pass = -1;
adamc@667	300
adamc@682	301 c->next = clients_free;
adamc@682	302 clients_free = c;
adamc@667	303 }
adamc@667	304
adamc@682	305 static uw_Basis_channel new_channel(client *c) {
adamc@682	306 uw_Basis_channel ch = {c->id, c->n_channels++};
adamc@668	307 return ch;
adamc@668	308 }
adamc@668	309
adamc@685	310 static void client_send(client c, buf msg) {
adamc@685	311 pthread_mutex_lock(&c->lock);
adamc@671	312
adamc@682	313 if (c->sock != -1) {
adamc@863	314 c->send(c->sock, on_success, strlen(on_success));
adamc@863	315 c->send(c->sock, begin_msgs, sizeof(begin_msgs) - 1);
adamc@863	316 c->send(c->sock, msg->start, buf_used(msg));
adamc@863	317 c->close(c->sock);
adamc@682	318 c->sock = -1;
adamc@1113	319 } else if (buf_append(&c->msgs, msg->start, buf_used(msg)))
adamc@1113	320 fprintf(stderr, "Client message buffer size exceeded");
adamc@671	321
adamc@685	322 pthread_mutex_unlock(&c->lock);
adamc@668	323 }
adamc@668	324
adamc@668	325
adamc@668	326 // Global entry points
adamc@668	327
adamc@1104	328 extern void uw_init_crypto();
adamc@1104	329
adamc@668	330 void uw_global_init() {
adamc@668	331 srand(time(NULL) ^ getpid());
adamc@668	332
adamc@668	333 clients = malloc(0);
adamc@1104	334
adamc@1104	335 uw_init_crypto();
adamc@1094	336 }
adamc@1094	337
adamc@1094	338 void uw_app_init(uw_app *app) {
adamc@1094	339 app->client_init();
adamc@668	340 }
adamc@668	341
adamc@1114	342 int uw_time = 0;
adamc@1114	343
adamc@668	344
adamc@667	345 // Single-request state
adamc@667	346
adamc@167	347 #define ERROR_BUF_LEN 1024
adamc@167	348
adamc@323	349 typedef struct regions {
adamc@323	350 struct regions *next;
adamc@323	351 } regions;
adamc@323	352
adamc@425	353 typedef struct {
adamc@425	354 void (func)(void);
adamc@425	355 void *arg;
adamc@425	356 } cleanup;
adamc@425	357
adamc@671	358 typedef struct {
adamc@682	359 unsigned client;
adamc@671	360 buf msgs;
adamc@682	361 } delta;
adamc@671	362
adamc@737	363 typedef enum {
adamc@759	364 UNSET, NORMAL, FIL, SUBFORM, SUBFORMS, ENTRY
adamc@737	365 } input_kind;
adamc@737	366
adamc@756	367 typedef struct input {
adamc@737	368 input_kind kind;
adamc@737	369 union {
adamc@737	370 char *normal;
adamc@739	371 uw_Basis_file file;
adamc@756	372 struct {
adamc@759	373 struct input fields, parent;
adamc@756	374 } subform;
adamc@759	375 struct {
adamc@759	376 struct input entries, parent;
adamc@759	377 } subforms;
adamc@759	378 struct {
adamc@759	379 struct input fields, next, *parent;
adamc@759	380 } entry;
adamc@737	381 } data;
adamc@737	382 } input;
adamc@737	383
adamc@771	384 typedef struct {
adamc@771	385 void *data;
adamc@771	386 uw_callback commit, rollback, free;
adamc@771	387 } transactional;
adamc@771	388
adamc@1061	389 typedef struct {
adamc@1061	390 char *name;
adamc@1061	391 void *data;
adamc@1061	392 void (free)(void);
adamc@1061	393 } global;
adamc@1061	394
adamc@311	395 struct uw_context {
adamc@1094	396 uw_app *app;
adamc@1094	397
adamc@854	398 char (get_header)(void , const char );
adamc@854	399 void *get_header_data;
adamc@457	400
adamc@666	401 buf outHeaders, page, heap, script;
adamc@1065	402 int returning_indirectly;
adamc@759	403 input inputs, subinputs, *cur_container;
adamc@1094	404 size_t sz_inputs, n_subinputs, used_subinputs;
adamc@167	405
adamc@565	406 int source_count;
adamc@562	407
adamc@272	408 void *db;
adamc@272	409
adamc@167	410 jmp_buf jmp_buf;
adamc@167	411
adamc@323	412 regions *regions;
adamc@323	413
adamc@425	414 cleanup cleanup, cleanup_front, *cleanup_back;
adamc@425	415
adamc@1094	416 const char *script_header;
adamc@643	417
adamc@736	418 int needs_push, needs_sig;
adamc@693	419
adamc@682	420 size_t n_deltas, used_deltas;
adamc@682	421 delta *deltas;
adamc@671	422
adamc@682	423 client *client;
adamc@682	424
adamc@771	425 transactional *transactionals;
adamc@771	426 size_t n_transactionals, used_transactionals;
adamc@771	427
adamc@1061	428 global *globals;
adamc@1061	429 size_t n_globals;
adamc@1061	430
adamc@1066	431 char *current_url;
adamc@1066	432
adamc@1114	433 int deadline;
adamc@1114	434
adamc@167	435 char error_message[ERROR_BUF_LEN];
adamc@117	436 };
adamc@117	437
adamc@1113	438 size_t uw_headers_max = SIZE_MAX;
adamc@1113	439 size_t uw_page_max = SIZE_MAX;
adamc@1113	440 size_t uw_heap_max = SIZE_MAX;
adamc@1113	441 size_t uw_script_max = SIZE_MAX;
adamc@1113	442
adamc@687	443 uw_context uw_init() {
adamc@311	444 uw_context ctx = malloc(sizeof(struct uw_context));
adamc@136	445
adamc@1094	446 ctx->app = NULL;
adamc@1094	447
adamc@854	448 ctx->get_header = NULL;
adamc@854	449 ctx->get_header_data = NULL;
adamc@457	450
adamc@1113	451 buf_init(uw_headers_max, &ctx->outHeaders, 0);
adamc@1113	452 buf_init(uw_page_max, &ctx->page, 0);
adamc@1065	453 ctx->returning_indirectly = 0;
adamc@1113	454 buf_init(uw_heap_max, &ctx->heap, 0);
adamc@1113	455 buf_init(uw_script_max, &ctx->script, 1);
adamc@667	456 ctx->script.start[0] = 0;
adamc@136	457
adamc@1094	458 ctx->inputs = malloc(0);
adamc@759	459 ctx->cur_container = NULL;
adamc@756	460 ctx->subinputs = malloc(0);
adamc@1094	461 ctx->sz_inputs = ctx->n_subinputs = ctx->used_subinputs = 0;
adamc@144	462
adamc@272	463 ctx->db = NULL;
adamc@272	464
adamc@323	465 ctx->regions = NULL;
adamc@323	466
adamc@425	467 ctx->cleanup_front = ctx->cleanup_back = ctx->cleanup = malloc(0);
adamc@425	468
adamc@643	469 ctx->script_header = "";
adamc@693	470 ctx->needs_push = 0;
adamc@736	471 ctx->needs_sig = 0;
adamc@1104	472
adamc@565	473 ctx->source_count = 0;
adamc@562	474
adamc@682	475 ctx->n_deltas = ctx->used_deltas = 0;
adamc@671	476 ctx->deltas = malloc(0);
adamc@671	477
adamc@700	478 ctx->client = NULL;
adamc@700	479
adamc@700	480 ctx->error_message[0] = 0;
adamc@700	481
adamc@771	482 ctx->transactionals = malloc(0);
adamc@771	483 ctx->n_transactionals = ctx->used_transactionals = 0;
adamc@771	484
adamc@1061	485 ctx->globals = malloc(0);
adamc@1061	486 ctx->n_globals = 0;
adamc@1061	487
adamc@1066	488 ctx->current_url = "";
adamc@1066	489
adamc@1114	490 ctx->deadline = INT_MAX;
adamc@1114	491
adamc@117	492 return ctx;
adamc@106	493 }
adamc@106	494
adamc@1113	495 size_t uw_inputs_max = SIZE_MAX;
adamc@1113	496
adamc@1113	497 int uw_set_app(uw_context ctx, uw_app *app) {
adamc@1094	498 ctx->app = app;
adamc@1094	499
adamc@1105	500 if (app && app->inputs_len > ctx->sz_inputs) {
adamc@1113	501 if (app->inputs_len > uw_inputs_max)
adamc@1113	502 return 1;
adamc@1113	503
adamc@1094	504 ctx->sz_inputs = app->inputs_len;
adamc@1094	505 ctx->inputs = realloc(ctx->inputs, ctx->sz_inputs * sizeof(input));
adamc@1094	506 memset(ctx->inputs, 0, ctx->sz_inputs * sizeof(input));
adamc@1094	507 }
adamc@1094	508 }
adamc@1094	509
adamc@311	510 void uw_set_db(uw_context ctx, void *db) {
adamc@272	511 ctx->db = db;
adamc@272	512 }
adamc@272	513
adamc@311	514 void *uw_get_db(uw_context ctx) {
adamc@272	515 return ctx->db;
adamc@272	516 }
adamc@272	517
adamc@311	518 void uw_free(uw_context ctx) {
adamc@671	519 size_t i;
adamc@671	520
adamc@666	521 buf_free(&ctx->outHeaders);
adamc@666	522 buf_free(&ctx->script);
adamc@666	523 buf_free(&ctx->page);
adamc@666	524 buf_free(&ctx->heap);
adamc@144	525 free(ctx->inputs);
adamc@756	526 free(ctx->subinputs);
adamc@425	527 free(ctx->cleanup);
adamc@771	528 free(ctx->transactionals);
adamc@671	529
adamc@682	530 for (i = 0; i < ctx->n_deltas; ++i)
adamc@671	531 buf_free(&ctx->deltas[i].msgs);
adamc@671	532
adamc@1061	533 for (i = 0; i < ctx->n_globals; ++i)
adamc@1089	534 if (ctx->globals[i].free)
adamc@1089	535 ctx->globals[i].free(ctx->globals[i].data);
adamc@1061	536
adamc@136	537 free(ctx);
adamc@136	538 }
adamc@136	539
adamc@562	540 void uw_reset_keep_error_message(uw_context ctx) {
adamc@756	541 size_t i;
adamc@756	542
adamc@666	543 buf_reset(&ctx->outHeaders);
adamc@666	544 buf_reset(&ctx->script);
adamc@667	545 ctx->script.start[0] = 0;
adamc@666	546 buf_reset(&ctx->page);
adamc@1065	547 ctx->returning_indirectly = 0;
adamc@666	548 buf_reset(&ctx->heap);
adamc@323	549 ctx->regions = NULL;
adamc@425	550 ctx->cleanup_front = ctx->cleanup;
adamc@565	551 ctx->source_count = 0;
adamc@682	552 ctx->used_deltas = 0;
adamc@682	553 ctx->client = NULL;
adamc@759	554 ctx->cur_container = NULL;
adamc@771	555 ctx->used_transactionals = 0;
adamc@1117	556 ctx->script_header = "";
adamc@167	557 }
adamc@167	558
adamc@562	559 void uw_reset_keep_request(uw_context ctx) {
adamc@562	560 uw_reset_keep_error_message(ctx);
adamc@562	561 ctx->error_message[0] = 0;
adamc@167	562 }
adamc@167	563
adamc@311	564 void uw_reset(uw_context ctx) {
adamc@311	565 uw_reset_keep_request(ctx);
adamc@1105	566 if (ctx->app)
adamc@1105	567 memset(ctx->inputs, 0, ctx->app->inputs_len * sizeof(input));
adamc@756	568 memset(ctx->subinputs, 0, ctx->n_subinputs * sizeof(input));
adamc@756	569 ctx->used_subinputs = 0;
adamc@144	570 }
adamc@144	571
adamc@311	572 failure_kind uw_begin_init(uw_context ctx) {
adamc@272	573 int r = setjmp(ctx->jmp_buf);
adamc@272	574
adamc@1105	575 if (r == 0 && ctx->app)
adamc@1094	576 ctx->app->db_init(ctx);
adamc@272	577
adamc@272	578 return r;
adamc@272	579 }
adamc@272	580
adamc@1118	581 void uw_close(uw_context ctx) {
adamc@1118	582 ctx->app->db_close(ctx);
adamc@1118	583 }
adamc@1118	584
adamc@854	585 void uw_set_headers(uw_context ctx, char (get_header)(void , const char ), void *get_header_data) {
adamc@854	586 ctx->get_header = get_header;
adamc@854	587 ctx->get_header_data = get_header_data;
adamc@742	588 }
adamc@742	589
adamc@801	590 static void uw_set_error(uw_context ctx, const char *fmt, ...) {
adamc@801	591 va_list ap;
adamc@801	592 va_start(ap, fmt);
adamc@801	593
adamc@801	594 vsnprintf(ctx->error_message, ERROR_BUF_LEN, fmt, ap);
adamc@801	595 }
adamc@801	596
adamc@311	597 __attribute__((noreturn)) void uw_error(uw_context ctx, failure_kind fk, const char *fmt, ...) {
adamc@425	598 cleanup *cl;
adamc@425	599
adamc@167	600 va_list ap;
adamc@167	601 va_start(ap, fmt);
adamc@167	602
adamc@167	603 vsnprintf(ctx->error_message, ERROR_BUF_LEN, fmt, ap);
adamc@167	604
adamc@425	605 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adamc@425	606 cl->func(cl->arg);
adamc@425	607
adamc@425	608 ctx->cleanup_front = ctx->cleanup;
adamc@425	609
adamc@190	610 longjmp(ctx->jmp_buf, fk);
adamc@167	611 }
adamc@167	612
adamc@1113	613 size_t uw_cleanup_max = SIZE_MAX;
adamc@1113	614
adamc@425	615 void uw_push_cleanup(uw_context ctx, void (func)(void ), void *arg) {
adamc@425	616 if (ctx->cleanup_front >= ctx->cleanup_back) {
adamc@425	617 int len = ctx->cleanup_back - ctx->cleanup, newLen;
adamc@425	618 if (len == 0)
adamc@425	619 newLen = 1;
adamc@425	620 else
adamc@428	621 newLen = len * 2;
adamc@1113	622
adamc@1113	623 if (newLen > uw_cleanup_max)
adamc@1113	624 if (len+1 <= uw_cleanup_max)
adamc@1113	625 newLen = uw_cleanup_max;
adamc@1113	626 else
adamc@1113	627 uw_error(ctx, FATAL, "Exceeded limit on number of cleanup handlers");
adamc@1113	628
adamc@470	629 ctx->cleanup = realloc(ctx->cleanup, newLen * sizeof(cleanup));
adamc@425	630 ctx->cleanup_front = ctx->cleanup + len;
adamc@425	631 ctx->cleanup_back = ctx->cleanup + newLen;
adamc@425	632 }
adamc@425	633
adamc@425	634 ctx->cleanup_front->func = func;
adamc@425	635 ctx->cleanup_front->arg = arg;
adamc@425	636 ++ctx->cleanup_front;
adamc@425	637 }
adamc@425	638
adamc@682	639 uw_Basis_string uw_Basis_requestHeader(uw_context ctx, uw_Basis_string h) {
adamc@854	640 return ctx->get_header(ctx->get_header_data, h);
adamc@682	641 }
adamc@682	642
adamc@682	643 void uw_login(uw_context ctx) {
adamc@693	644 if (ctx->needs_push) {
adamc@682	645 char id_s, pass_s;
adamc@682	646
adamc@682	647 if ((id_s = uw_Basis_requestHeader(ctx, "UrWeb-Client"))
adamc@682	648 && (pass_s = uw_Basis_requestHeader(ctx, "UrWeb-Pass"))) {
adamc@682	649 unsigned id = atoi(id_s);
adamc@682	650 int pass = atoi(pass_s);
adamc@682	651 client *c = find_client(id);
adamc@682	652
adamc@682	653 if (c == NULL)
adamc@682	654 uw_error(ctx, FATAL, "Unknown client ID in HTTP headers (%s, %s)", id_s, pass_s);
adamc@682	655 else {
adamc@685	656 use_client(c);
adamc@682	657 ctx->client = c;
adamc@682	658
adamc@682	659 if (c->mode != USED)
adamc@682	660 uw_error(ctx, FATAL, "Stale client ID (%u) in subscription request", id);
adamc@682	661 if (c->pass != pass)
adamc@682	662 uw_error(ctx, FATAL, "Wrong client password (%u, %d) in subscription request", id, pass);
adamc@682	663 }
adamc@682	664 } else {
adamc@682	665 client *c = new_client();
adamc@1113	666
adamc@1113	667 if (c == NULL)
adamc@1113	668 uw_error(ctx, FATAL, "Limit exceeded on number of message-passing clients");
adamc@1113	669
adamc@685	670 use_client(c);
adamc@682	671 ctx->client = c;
adamc@864	672 }
adamc@682	673 }
adamc@682	674 }
adamc@682	675
adamc@671	676 failure_kind uw_begin(uw_context ctx, char *path) {
adamc@671	677 int r = setjmp(ctx->jmp_buf);
adamc@671	678
adamc@671	679 if (r == 0) {
adamc@1094	680 if (ctx->app->db_begin(ctx))
adamc@671	681 uw_error(ctx, BOUNDED_RETRY, "Error running SQL BEGIN");
adamc@682	682
adamc@1094	683 ctx->app->handle(ctx, path);
adamc@671	684 }
adamc@671	685
adamc@671	686 return r;
adamc@671	687 }
adamc@671	688
adamc@772	689 uw_Basis_client uw_Basis_self(uw_context ctx) {
adamc@682	690 if (ctx->client == NULL)
adamc@682	691 uw_error(ctx, FATAL, "Call to Basis.self() from page that has only server-side code");
adamc@682	692
adamc@682	693 return ctx->client->id;
adamc@682	694 }
adamc@682	695
adamc@425	696 void uw_pop_cleanup(uw_context ctx) {
adamc@425	697 if (ctx->cleanup_front == ctx->cleanup)
adamc@425	698 uw_error(ctx, FATAL, "Attempt to pop from empty cleanup action stack");
adamc@425	699
adamc@425	700 --ctx->cleanup_front;
adamc@425	701 ctx->cleanup_front->func(ctx->cleanup_front->arg);
adamc@425	702 }
adamc@425	703
adamc@311	704 char *uw_error_message(uw_context ctx) {
adamc@167	705 return ctx->error_message;
adamc@167	706 }
adamc@167	707
adamc@1115	708 void uw_set_error_message(uw_context ctx, const char *msg) {
adamc@1115	709 strncpy(ctx->error_message, msg, sizeof(ctx->error_message));
adamc@1115	710 ctx->error_message[sizeof(ctx->error_message)-1] = 0;
adamc@1115	711 }
adamc@1115	712
adamc@759	713 static input *INP(uw_context ctx) {
adamc@759	714 if (ctx->cur_container == NULL)
adamc@759	715 return ctx->inputs;
adamc@759	716 else if (ctx->cur_container->kind == SUBFORM)
adamc@759	717 return ctx->cur_container->data.subform.fields;
adamc@759	718 else if (ctx->cur_container->kind == ENTRY)
adamc@759	719 return ctx->cur_container->data.entry.fields;
adamc@759	720 else
adamc@760	721 uw_error(ctx, FATAL, "INP: Wrong kind (%d, %p)", ctx->cur_container->kind, ctx->cur_container);
adamc@759	722 }
adamc@759	723
adamc@760	724 static void adjust_pointer(input *ptr, input old_start, input *new_start, size_t len) {
adamc@760	725 if (ptr != NULL && ptr >= old_start && *ptr < old_start + len)
adamc@760	726 *ptr += new_start - old_start;
adamc@760	727 }
adamc@760	728
adamc@760	729 static void adjust_input(input x, input old_start, input *new_start, size_t len) {
adamc@759	730 switch (x->kind) {
adamc@759	731 case SUBFORM:
adamc@760	732 adjust_pointer(&x->data.subform.fields, old_start, new_start, len);
adamc@760	733 adjust_pointer(&x->data.subform.parent, old_start, new_start, len);
adamc@759	734 break;
adamc@759	735 case SUBFORMS:
adamc@760	736 adjust_pointer(&x->data.subforms.entries, old_start, new_start, len);
adamc@760	737 adjust_pointer(&x->data.subforms.parent, old_start, new_start, len);
adamc@759	738 break;
adamc@759	739 case ENTRY:
adamc@760	740 adjust_pointer(&x->data.entry.fields, old_start, new_start, len);
adamc@760	741 adjust_pointer(&x->data.entry.next, old_start, new_start, len);
adamc@760	742 adjust_pointer(&x->data.entry.parent, old_start, new_start, len);
adamc@759	743 }
adamc@759	744 }
adamc@759	745
adamc@1113	746 size_t uw_subinputs_max = SIZE_MAX;
adamc@1113	747
adamc@759	748 static input *check_input_space(uw_context ctx, size_t len) {
adamc@759	749 size_t i;
adamc@759	750 input *r;
adamc@759	751
adamc@759	752 if (ctx->used_subinputs + len >= ctx->n_subinputs) {
adamc@1113	753 if (ctx->used_subinputs + len > uw_subinputs_max)
adamc@1113	754 uw_error(ctx, FATAL, "Exceeded limit on number of subinputs");
adamc@1113	755
adamc@759	756 input new_subinputs = realloc(ctx->subinputs, sizeof(input) (ctx->used_subinputs + len));
adamc@759	757 size_t offset = new_subinputs - ctx->subinputs;
adamc@759	758
adamc@760	759 if (ctx->subinputs != new_subinputs) {
adamc@760	760 for (i = 0; i < ctx->used_subinputs; ++i)
adamc@760	761 adjust_input(&new_subinputs[i], ctx->subinputs, new_subinputs, ctx->used_subinputs);
adamc@1094	762 for (i = 0; i < ctx->app->inputs_len; ++i)
adamc@760	763 adjust_input(&ctx->inputs[i], ctx->subinputs, new_subinputs, ctx->used_subinputs);
adamc@760	764
adamc@760	765 adjust_pointer(&ctx->cur_container, ctx->subinputs, new_subinputs, ctx->used_subinputs);
adamc@760	766
adamc@760	767 ctx->n_subinputs = ctx->used_subinputs + len;
adamc@760	768 ctx->subinputs = new_subinputs;
adamc@760	769 }
adamc@759	770 }
adamc@759	771
adamc@759	772 r = &ctx->subinputs[ctx->used_subinputs];
adamc@759	773
adamc@759	774 for (i = 0; i < len; ++i)
adamc@759	775 ctx->subinputs[ctx->used_subinputs++].kind = UNUSED;
adamc@759	776
adamc@759	777 return r;
adamc@759	778 }
adamc@756	779
adamc@801	780 int uw_set_input(uw_context ctx, const char name, char value) {
adamc@1050	781 //printf("Input name %s\n", name);
adamc@1038	782
adamc@756	783 if (!strcasecmp(name, ".b")) {
adamc@1094	784 int n = ctx->app->input_num(value);
adamc@756	785 input *inps;
adamc@756	786
adamc@801	787 if (n < 0) {
adamc@801	788 uw_set_error(ctx, "Bad subform name %s", value);
adamc@801	789 return -1;
adamc@801	790 }
adamc@801	791
adamc@1094	792 if (n >= ctx->app->inputs_len) {
adamc@801	793 uw_set_error(ctx, "For subform name %s, index %d is out of range", value, n);
adamc@801	794 return -1;
adamc@801	795 }
adamc@756	796
adamc@1094	797 inps = check_input_space(ctx, ctx->app->inputs_len);
adamc@759	798
adamc@759	799 INP(ctx)[n].kind = SUBFORM;
adamc@759	800 INP(ctx)[n].data.subform.parent = ctx->cur_container;
adamc@759	801 INP(ctx)[n].data.subform.fields = inps;
adamc@759	802 ctx->cur_container = &INP(ctx)[n];
adamc@756	803 } else if (!strcasecmp(name, ".e")) {
adamc@756	804 input *tmp;
adamc@756	805
adamc@801	806 if (ctx->cur_container == NULL) {
adamc@801	807 uw_set_error(ctx, "Unmatched subform closer");
adamc@801	808 return -1;
adamc@801	809 }
adamc@756	810
adamc@759	811 tmp = ctx->cur_container;
adamc@759	812 switch (tmp->kind) {
adamc@759	813 case SUBFORM:
adamc@759	814 ctx->cur_container = tmp->data.subform.parent;
adamc@759	815 tmp->data.subform.parent = NULL;
adamc@759	816 break;
adamc@759	817 case SUBFORMS:
adamc@759	818 ctx->cur_container = tmp->data.subforms.parent;
adamc@759	819 tmp->data.subforms.parent = NULL;
adamc@759	820 break;
adamc@759	821 case ENTRY:
adamc@759	822 ctx->cur_container = tmp->data.entry.parent;
adamc@759	823 break;
adamc@759	824 default:
adamc@801	825 uw_set_error(ctx, "uw_set_input: Wrong kind");
adamc@801	826 return -1;
adamc@759	827 }
adamc@759	828 } else if (!strcasecmp(name, ".s")) {
adamc@1094	829 int n = ctx->app->input_num(value);
adamc@759	830
adamc@801	831 if (n < 0) {
adamc@801	832 uw_set_error(ctx, "Bad subforms name %s", value);
adamc@801	833 return -1;
adamc@801	834 }
adamc@801	835
adamc@1094	836 if (n >= ctx->app->inputs_len) {
adamc@801	837 uw_set_error(ctx, "For subforms name %s, index %d is out of range", value, n);
adamc@801	838 return -1;
adamc@801	839 }
adamc@759	840
adamc@759	841 INP(ctx)[n].kind = SUBFORMS;
adamc@759	842 INP(ctx)[n].data.subforms.parent = ctx->cur_container;
adamc@759	843 INP(ctx)[n].data.subforms.entries = NULL;
adamc@759	844 ctx->cur_container = &INP(ctx)[n];
adamc@759	845 } else if (!strcasecmp(name, ".i")) {
adamc@759	846 input *inps;
adamc@759	847
adamc@801	848 if (!ctx->cur_container) {
adamc@801	849 uw_set_error(ctx, "New entry without container");
adamc@801	850 return -1;
adamc@801	851 }
adamc@801	852
adamc@801	853 if (ctx->cur_container->kind != SUBFORMS) {
adamc@801	854 uw_set_error(ctx, "Bad kind for entry parent");
adamc@801	855 return -1;
adamc@801	856 }
adamc@759	857
adamc@1094	858 inps = check_input_space(ctx, ctx->app->inputs_len + 1);
adamc@759	859
adamc@759	860 inps->kind = ENTRY;
adamc@759	861 inps->data.entry.parent = ctx->cur_container;
adamc@759	862 inps->data.entry.next = ctx->cur_container->data.subforms.entries;
adamc@759	863 ctx->cur_container->data.subforms.entries = inps;
adamc@759	864
adamc@759	865 inps->data.entry.fields = inps+1;
adamc@759	866 ctx->cur_container = inps;
adamc@756	867 } else {
adamc@1094	868 int n = ctx->app->input_num(name);
adamc@756	869
adamc@801	870 if (n < 0) {
adamc@1038	871 if (!strcmp(name, "null"))
adamc@1038	872 return 0;
adamc@801	873 uw_set_error(ctx, "Bad input name %s", name);
adamc@801	874 return -1;
adamc@801	875 }
adamc@801	876
adamc@1094	877 if (n >= ctx->app->inputs_len) {
adamc@801	878 uw_set_error(ctx, "For input name %s, index %d is out of range", name, n);
adamc@801	879 return -1;
adamc@801	880 }
adamc@756	881
adamc@756	882 INP(ctx)[n].kind = NORMAL;
adamc@756	883 INP(ctx)[n].data.normal = value;
adamc@756	884 }
adamc@801	885
adamc@801	886 return 0;
adamc@144	887 }
adamc@144	888
adamc@311	889 char *uw_get_input(uw_context ctx, int n) {
adamc@169	890 if (n < 0)
adamc@311	891 uw_error(ctx, FATAL, "Negative input index %d", n);
adamc@1094	892 if (n >= ctx->app->inputs_len)
adamc@311	893 uw_error(ctx, FATAL, "Out-of-bounds input index %d", n);
adamc@737	894
adamc@756	895 switch (INP(ctx)[n].kind) {
adamc@737	896 case UNSET:
adamc@737	897 return NULL;
adamc@739	898 case FIL:
adamc@739	899 uw_error(ctx, FATAL, "Tried to read a file form input as normal");
adamc@756	900 case SUBFORM:
adamc@756	901 uw_error(ctx, FATAL, "Tried to read a subform form input as normal");
adamc@759	902 case SUBFORMS:
adamc@759	903 uw_error(ctx, FATAL, "Tried to read a subforms form input as normal");
adamc@759	904 case ENTRY:
adamc@759	905 uw_error(ctx, FATAL, "Tried to read an entry form input as normal");
adamc@737	906 case NORMAL:
adamc@756	907 return INP(ctx)[n].data.normal;
adamc@737	908 default:
adamc@737	909 uw_error(ctx, FATAL, "Impossible input kind");
adamc@737	910 }
adamc@138	911 }
adamc@138	912
adamc@311	913 char *uw_get_optional_input(uw_context ctx, int n) {
adamc@190	914 if (n < 0)
adamc@311	915 uw_error(ctx, FATAL, "Negative input index %d", n);
adamc@1094	916 if (n >= ctx->app->inputs_len)
adamc@311	917 uw_error(ctx, FATAL, "Out-of-bounds input index %d", n);
adamc@737	918
adamc@756	919 switch (INP(ctx)[n].kind) {
adamc@737	920 case UNSET:
adamc@737	921 return "";
adamc@739	922 case FIL:
adamc@739	923 uw_error(ctx, FATAL, "Tried to read a file form input as normal");
adamc@756	924 case SUBFORM:
adamc@756	925 uw_error(ctx, FATAL, "Tried to read a subform form input as normal");
adamc@759	926 case SUBFORMS:
adamc@759	927 uw_error(ctx, FATAL, "Tried to read a subforms form input as normal");
adamc@759	928 case ENTRY:
adamc@759	929 uw_error(ctx, FATAL, "Tried to read an entry form input as normal");
adamc@737	930 case NORMAL:
adamc@756	931 return INP(ctx)[n].data.normal;
adamc@737	932 default:
adamc@737	933 uw_error(ctx, FATAL, "Impossible input kind");
adamc@737	934 }
adamc@737	935 }
adamc@737	936
adamc@801	937 int uw_set_file_input(uw_context ctx, const char *name, uw_Basis_file f) {
adamc@1094	938 int n = ctx->app->input_num(name);
adamc@737	939
adamc@801	940 if (n < 0) {
adamc@801	941 uw_set_error(ctx, "Bad file input name %s", name);
adamc@801	942 return -1;
adamc@801	943 }
adamc@801	944
adamc@1094	945 if (n >= ctx->app->inputs_len) {
adamc@801	946 uw_set_error(ctx, "For file input name %s, index %d is out of range", name, n);
adamc@801	947 return -1;
adamc@801	948 }
adamc@737	949
adamc@739	950 ctx->inputs[n].kind = FIL;
adamc@739	951 ctx->inputs[n].data.file = f;
adamc@801	952
adamc@801	953 return 0;
adamc@737	954 }
adamc@737	955
adamc@739	956 void *uw_malloc(uw_context ctx, size_t len);
adamc@739	957
adamc@760	958 static void parents(input *inp) {
adamc@760	959 printf("Stack: %p\n", inp);
adamc@760	960 while (inp) {
adamc@760	961 switch (inp->kind) {
adamc@760	962 case NORMAL:
adamc@760	963 printf("Normal(%p)\n", inp);
adamc@760	964 break;
adamc@760	965 case FIL:
adamc@760	966 printf("File(%p)\n", inp);
adamc@760	967 break;
adamc@760	968 case SUBFORM:
adamc@760	969 printf("Subform; fields = %p\n", inp->data.subform.fields);
adamc@760	970 inp = inp->data.subform.parent;
adamc@760	971 break;
adamc@760	972 case SUBFORMS:
adamc@760	973 printf("Subforms; entries = %p\n", inp->data.subforms.entries);
adamc@760	974 inp = inp->data.subforms.parent;
adamc@760	975 break;
adamc@760	976 case ENTRY:
adamc@760	977 printf("Entry; fields = %p; next = %p\n", inp->data.entry.fields, inp->data.entry.next);
adamc@760	978 inp = inp->data.entry.parent;
adamc@760	979 break;
adamc@760	980 default:
adamc@760	981 inp = NULL;
adamc@760	982 }
adamc@760	983 }
adamc@760	984 }
adamc@760	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@1113	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@1113	1143
adamc@666	1144 new_heap = realloc(b->start, next);
adamc@666	1145 b->front = new_heap + (b->front - b->start);
adamc@666	1146 b->back = new_heap + next;
adamc@136	1147
adamc@667	1148 if (new_heap != b->start) {
adamc@666	1149 b->start = new_heap;
adamc@666	1150 uw_error(ctx, UNLIMITED_RETRY, "Couldn't allocate new %s contiguously", desc);
adamc@136	1151 }
adamc@136	1152
adamc@666	1153 b->start = new_heap;
adamc@136	1154 }
adamc@136	1155 }
adamc@136	1156
adamc@832	1157 void uw_check_heap(uw_context ctx, size_t extra) {
adamc@1113	1158 buf_check_ctx(ctx, "heap", &ctx->heap, extra, "heap chunk");
adamc@666	1159 }
adamc@666	1160
adamc@832	1161 char *uw_heap_front(uw_context ctx) {
adamc@832	1162 return ctx->heap.front;
adamc@832	1163 }
adamc@832	1164
adamc@832	1165 void uw_set_heap_front(uw_context ctx, char *fr) {
adamc@832	1166 ctx->heap.front = fr;
adamc@832	1167 }
adamc@832	1168
adamc@311	1169 void *uw_malloc(uw_context ctx, size_t len) {
adamc@136	1170 void *result;
adamc@136	1171
adamc@311	1172 uw_check_heap(ctx, len);
adamc@136	1173
adamc@666	1174 result = ctx->heap.front;
adamc@666	1175 ctx->heap.front += len;
adamc@136	1176 return result;
adamc@117	1177 }
adamc@117	1178
adamc@323	1179 void uw_begin_region(uw_context ctx) {
adamc@666	1180 regions r = (regions ) ctx->heap.front;
adamc@323	1181
adamc@323	1182 uw_check_heap(ctx, sizeof(regions));
adamc@323	1183
adamc@666	1184 ctx->heap.front += sizeof(regions);
adamc@323	1185
adamc@323	1186 r->next = ctx->regions;
adamc@323	1187 ctx->regions = r;
adamc@323	1188 }
adamc@323	1189
adamc@323	1190 void uw_end_region(uw_context ctx) {
adamc@323	1191 regions *r = ctx->regions;
adamc@323	1192
adamc@323	1193 if (r == NULL)
adamc@323	1194 uw_error(ctx, FATAL, "Region stack underflow");
adamc@323	1195
adamc@666	1196 ctx->heap.front = (char *) r;
adamc@323	1197 ctx->regions = r->next;
adamc@323	1198 }
adamc@323	1199
adamc@324	1200 void uw_memstats(uw_context ctx) {
adamc@666	1201 printf("Headers: %d/%d\n", buf_used(&ctx->outHeaders), buf_avail(&ctx->outHeaders));
adamc@666	1202 printf("Script: %d/%d\n", buf_used(&ctx->script), buf_avail(&ctx->script));
adamc@666	1203 printf("Page: %d/%d\n", buf_used(&ctx->page), buf_avail(&ctx->page));
adamc@666	1204 printf("Heap: %d/%d\n", buf_used(&ctx->heap), buf_avail(&ctx->heap));
adamc@324	1205 }
adamc@324	1206
adamc@311	1207 int uw_send(uw_context ctx, int sock) {
adamc@666	1208 int n = uw_really_send(sock, ctx->outHeaders.start, ctx->outHeaders.front - ctx->outHeaders.start);
adamc@462	1209
adamc@462	1210 if (n < 0)
adamc@462	1211 return n;
adamc@462	1212
adamc@462	1213 n = uw_really_send(sock, "\r\n", 2);
adamc@462	1214
adamc@462	1215 if (n < 0)
adamc@462	1216 return n;
adamc@462	1217
adamc@666	1218 return uw_really_send(sock, ctx->page.start, ctx->page.front - ctx->page.start);
adamc@462	1219 }
adamc@462	1220
adamc@856	1221 int uw_print(uw_context ctx, int fd) {
adamc@856	1222 int n = uw_really_write(fd, ctx->outHeaders.start, ctx->outHeaders.front - ctx->outHeaders.start);
adamc@856	1223
adamc@856	1224 if (n < 0)
adamc@856	1225 return n;
adamc@856	1226
adamc@856	1227 n = uw_really_write(fd, "\r\n", 2);
adamc@856	1228
adamc@856	1229 if (n < 0)
adamc@856	1230 return n;
adamc@856	1231
adamc@856	1232 return uw_really_write(fd, ctx->page.start, ctx->page.front - ctx->page.start);
adamc@856	1233 }
adamc@856	1234
adamc@860	1235 int uw_output(uw_context ctx, int (output)(void data, char buf, size_t len), void data) {
adamc@860	1236 int n = output(data, ctx->outHeaders.start, ctx->outHeaders.front - ctx->outHeaders.start);
adamc@860	1237
adamc@860	1238 if (n < 0)
adamc@860	1239 return n;
adamc@860	1240
adamc@860	1241 n = output(data, "\r\n", 2);
adamc@860	1242
adamc@860	1243 if (n < 0)
adamc@860	1244 return n;
adamc@860	1245
adamc@860	1246 return output(data, ctx->page.start, ctx->page.front - ctx->page.start);
adamc@860	1247 }
adamc@860	1248
adamc@462	1249 static void uw_check_headers(uw_context ctx, size_t extra) {
adamc@1113	1250 ctx_buf_check(ctx, "headers", &ctx->outHeaders, extra);
adamc@462	1251 }
adamc@462	1252
adamc@462	1253 void uw_write_header(uw_context ctx, uw_Basis_string s) {
adamc@462	1254 int len = strlen(s);
adamc@462	1255
adamc@462	1256 uw_check_headers(ctx, len + 1);
adamc@666	1257 strcpy(ctx->outHeaders.front, s);
adamc@666	1258 ctx->outHeaders.front += len;
adamc@562	1259 }
adamc@562	1260
adamc@1110	1261 void uw_clear_headers(uw_context ctx) {
adamc@1110	1262 buf_reset(&ctx->outHeaders);
adamc@1110	1263 }
adamc@1110	1264
adamc@562	1265 static void uw_check_script(uw_context ctx, size_t extra) {
adamc@1113	1266 ctx_buf_check(ctx, "script", &ctx->script, extra);
adamc@562	1267 }
adamc@562	1268
adamc@562	1269 void uw_write_script(uw_context ctx, uw_Basis_string s) {
adamc@562	1270 int len = strlen(s);
adamc@562	1271
adamc@562	1272 uw_check_script(ctx, len + 1);
adamc@666	1273 strcpy(ctx->script.front, s);
adamc@666	1274 ctx->script.front += len;
adamc@562	1275 }
adamc@562	1276
adamc@645	1277 const char *uw_Basis_get_script(uw_context ctx, uw_unit u) {
adamc@916	1278 return "<sc>";
adamc@565	1279 }
adamc@565	1280
adamc@695	1281 uw_Basis_string uw_Basis_maybe_onload(uw_context ctx, uw_Basis_string s) {
adamc@695	1282 if (s[0] == 0)
adamc@695	1283 return "";
adamc@695	1284 else {
adamc@695	1285 char *r = uw_malloc(ctx, 11 + strlen(s));
adamc@695	1286 sprintf(r, " onload='%s'", s);
adamc@695	1287 return r;
adamc@695	1288 }
adamc@695	1289 }
adamc@695	1290
adamc@1042	1291 uw_Basis_string uw_Basis_maybe_onunload(uw_context ctx, uw_Basis_string s) {
adamc@1042	1292 if (ctx->script_header[0] == 0)
adamc@1042	1293 return "";
adamc@1042	1294 else {
adamc@1042	1295 char *r = uw_malloc(ctx, 22 + strlen(s));
adamc@1042	1296 sprintf(r, " onunload='unload();%s'", s);
adamc@1042	1297 return r;
adamc@1042	1298 }
adamc@1042	1299 }
adamc@1042	1300
adamc@694	1301 const char *uw_Basis_get_settings(uw_context ctx, uw_unit u) {
adamc@736	1302 if (ctx->client == NULL) {
adamc@736	1303 if (ctx->needs_sig) {
adamc@1094	1304 char *sig = ctx->app->cookie_sig(ctx);
adamc@736	1305 char *r = uw_malloc(ctx, strlen(sig) + 8);
adamc@736	1306 sprintf(r, "sig=\"%s\";", sig);
adamc@736	1307 return r;
adamc@736	1308 }
adamc@736	1309 else
adamc@736	1310 return "";
adamc@736	1311 } else {
adamc@1094	1312 char *sig = ctx->needs_sig ? ctx->app->cookie_sig(ctx) : "";
adamc@1094	1313 char r = uw_malloc(ctx, 59 + 3 INTS_MAX + strlen(ctx->app->url_prefix)
adamc@736	1314 + (ctx->needs_sig ? strlen(sig) + 7 : 0));
adamc@736	1315 sprintf(r, "client_id=%u;client_pass=%d;url_prefix=\"%s\";timeout=%d;%s%s%slistener();",
adamc@682	1316 ctx->client->id,
adamc@682	1317 ctx->client->pass,
adamc@1094	1318 ctx->app->url_prefix,
adamc@1094	1319 ctx->app->timeout,
adamc@736	1320 ctx->needs_sig ? "sig=\"" : "",
adamc@736	1321 sig,
adamc@736	1322 ctx->needs_sig ? "\";" : "");
adamc@679	1323 return r;
adamc@668	1324 }
adamc@667	1325 }
adamc@667	1326
adamc@574	1327 uw_Basis_string uw_Basis_jsifyString(uw_context ctx, uw_Basis_string s) {
adamc@574	1328 char r, s2;
adamc@574	1329
adamc@574	1330 uw_check_heap(ctx, strlen(s) * 4 + 2);
adamc@574	1331
adamc@666	1332 r = s2 = ctx->heap.front;
adamc@574	1333 *s2++ = '"';
adamc@574	1334
adamc@574	1335 for (; *s; s++) {
adamc@574	1336 char c = *s;
adamc@574	1337
adamc@574	1338 switch (c) {
adamc@574	1339 case '"':
adamc@574	1340 strcpy(s2, "\\\"");
adamc@574	1341 s2 += 2;
adamc@574	1342 break;
adamc@1027	1343 case '\'':
adamc@1027	1344 strcpy(s2, "\\047");
adamc@1027	1345 s2 += 4;
adamc@1027	1346 break;
adamc@574	1347 case '\\':
adamc@574	1348 strcpy(s2, "\\\\");
adamc@574	1349 s2 += 2;
adamc@574	1350 break;
adamc@574	1351 default:
adamc@574	1352 if (isprint(c))
adamc@574	1353 *s2++ = c;
adamc@574	1354 else {
adamc@574	1355 sprintf(s2, "\\%3o", c);
adamc@574	1356 s2 += 4;
adamc@574	1357 }
adamc@574	1358 }
adamc@574	1359 }
adamc@574	1360
adamc@574	1361 strcpy(s2, "\"");
adamc@910	1362 ctx->heap.front = s2 + 2;
adamc@574	1363 return r;
adamc@574	1364 }
adamc@574	1365
adamc@1025	1366 uw_Basis_string uw_Basis_jsifyChar(uw_context ctx, uw_Basis_char c) {
adamc@1025	1367 char r, s2;
adamc@1025	1368
adamc@1025	1369 uw_check_heap(ctx, 6);
adamc@1025	1370
adamc@1025	1371 r = s2 = ctx->heap.front;
adamc@1025	1372 *s2++ = '"';
adamc@1025	1373
adamc@1025	1374 switch (c) {
adamc@1025	1375 case '"':
adamc@1025	1376 strcpy(s2, "\\\"");
adamc@1025	1377 s2 += 2;
adamc@1025	1378 break;
adamc@1027	1379 case '\'':
adamc@1027	1380 strcpy(s2, "\\047");
adamc@1027	1381 s2 += 4;
adamc@1027	1382 break;
adamc@1025	1383 case '\\':
adamc@1025	1384 strcpy(s2, "\\\\");
adamc@1025	1385 s2 += 2;
adamc@1025	1386 break;
adamc@1025	1387 default:
adamc@1025	1388 if (isprint(c))
adamc@1025	1389 *s2++ = c;
adamc@1025	1390 else {
adamc@1025	1391 sprintf(s2, "\\%3o", c);
adamc@1025	1392 s2 += 4;
adamc@1025	1393 }
adamc@1025	1394 }
adamc@1025	1395
adamc@1025	1396 strcpy(s2, "\"");
adamc@1025	1397 ctx->heap.front = s2 + 2;
adamc@1025	1398 return r;
adamc@1025	1399 }
adamc@1025	1400
adamc@574	1401 uw_Basis_string uw_Basis_jsifyString_ws(uw_context ctx, uw_Basis_string s) {
adamc@574	1402 char r, s2;
adamc@574	1403
adamc@574	1404 uw_check_script(ctx, strlen(s) * 4 + 2);
adamc@574	1405
adamc@666	1406 r = s2 = ctx->script.front;
adamc@574	1407 *s2++ = '"';
adamc@574	1408
adamc@574	1409 for (; *s; s++) {
adamc@574	1410 char c = *s;
adamc@574	1411
adamc@574	1412 switch (c) {
adamc@577	1413 case '\'':
adamc@1027	1414 strcpy(s2, "\\");
adamc@574	1415 s2 += 2;
adamc@574	1416 break;
adamc@574	1417 case '\\':
adamc@574	1418 strcpy(s2, "\\\\");
adamc@574	1419 s2 += 2;
adamc@574	1420 break;
adamc@574	1421 default:
adamc@574	1422 if (isprint(c))
adamc@574	1423 *s2++ = c;
adamc@574	1424 else {
adamc@574	1425 sprintf(s2, "\\%3o", c);
adamc@574	1426 s2 += 4;
adamc@574	1427 }
adamc@574	1428 }
adamc@574	1429 }
adamc@574	1430
adamc@574	1431 strcpy(s2, "\"");
adamc@666	1432 ctx->script.front = s2 + 1;
adamc@574	1433 return r;
adamc@574	1434 }
adamc@574	1435
adamc@682	1436 char *uw_Basis_jsifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	1437 if (ctx->client == NULL \|\| chn.cli != ctx->client->id)
adamc@682	1438 return "null";
adamc@682	1439 else {
adamc@682	1440 int len;
adamc@682	1441 char *r;
adamc@682	1442
adamc@682	1443 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	1444 r = ctx->heap.front;
adamc@682	1445 sprintf(r, "%u%n", chn.chn, &len);
adamc@682	1446 ctx->heap.front += len+1;
adamc@682	1447 return r;
adamc@682	1448 }
adamc@682	1449 }
adamc@682	1450
adamc@577	1451 uw_Basis_int uw_Basis_new_client_source(uw_context ctx, uw_Basis_string s) {
adamc@577	1452 int len;
adamc@577	1453 size_t s_len = strlen(s);
adamc@562	1454
adamc@970	1455 uw_check_script(ctx, 18 + INTS_MAX + s_len);
adamc@970	1456 sprintf(ctx->script.front, "var s%d=sc(exec(%n", ctx->source_count, &len);
adamc@666	1457 ctx->script.front += len;
adamc@666	1458 strcpy(ctx->script.front, s);
adamc@666	1459 ctx->script.front += s_len;
adamc@970	1460 strcpy(ctx->script.front, "));");
adamc@972	1461 ctx->script.front += 3;
adamc@562	1462
adamc@565	1463 return ctx->source_count++;
adamc@117	1464 }
adamc@117	1465
adamc@577	1466 uw_unit uw_Basis_set_client_source(uw_context ctx, uw_Basis_int n, uw_Basis_string s) {
adamc@577	1467 int len;
adamc@577	1468 size_t s_len = strlen(s);
adamc@577	1469
adamc@970	1470 uw_check_script(ctx, 12 + INTS_MAX + s_len);
adamc@970	1471 sprintf(ctx->script.front, "sv(s%d,exec(%n", (int)n, &len);
adamc@666	1472 ctx->script.front += len;
adamc@666	1473 strcpy(ctx->script.front, s);
adamc@666	1474 ctx->script.front += s_len;
adamc@970	1475 strcpy(ctx->script.front, "));");
adamc@972	1476 ctx->script.front += 3;
adamc@577	1477
adamc@577	1478 return uw_unit_v;
adamc@577	1479 }
adamc@577	1480
adamc@311	1481 static void uw_check(uw_context ctx, size_t extra) {
adamc@1113	1482 ctx_buf_check(ctx, "page", &ctx->page, extra);
adamc@117	1483 }
adamc@117	1484
adamc@311	1485 static void uw_writec_unsafe(uw_context ctx, char c) {
adamc@666	1486 *(ctx->page.front)++ = c;
adamc@117	1487 }
adamc@117	1488
adamc@311	1489 void uw_writec(uw_context ctx, char c) {
adamc@311	1490 uw_check(ctx, 1);
adamc@311	1491 uw_writec_unsafe(ctx, c);
adamc@117	1492 }
adamc@117	1493
adamc@311	1494 static void uw_write_unsafe(uw_context ctx, const char* s) {
adamc@117	1495 int len = strlen(s);
adamc@666	1496 memcpy(ctx->page.front, s, len);
adamc@666	1497 ctx->page.front += len;
adamc@117	1498 }
adamc@117	1499
adamc@311	1500 void uw_write(uw_context ctx, const char* s) {
adamc@311	1501 uw_check(ctx, strlen(s) + 1);
adamc@311	1502 uw_write_unsafe(ctx, s);
adamc@666	1503 *ctx->page.front = 0;
adamc@102	1504 }
adamc@106	1505
adamc@311	1506 char *uw_Basis_attrifyInt(uw_context ctx, uw_Basis_int n) {
adamc@136	1507 char *result;
adamc@136	1508 int len;
adamc@311	1509 uw_check_heap(ctx, INTS_MAX);
adamc@666	1510 result = ctx->heap.front;
adamc@276	1511 sprintf(result, "%lld%n", n, &len);
adamc@666	1512 ctx->heap.front += len+1;
adamc@136	1513 return result;
adamc@106	1514 }
adamc@106	1515
adamc@311	1516 char *uw_Basis_attrifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@136	1517 char *result;
adamc@136	1518 int len;
adamc@311	1519 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	1520 result = ctx->heap.front;
adamc@136	1521 sprintf(result, "%g%n", n, &len);
adamc@666	1522 ctx->heap.front += len+1;
adamc@136	1523 return result;
adamc@106	1524 }
adamc@106	1525
adamc@1054	1526 static int isCont(unsigned char ch) {
adamc@1054	1527 return ch / 64 == 2;
adamc@1054	1528 }
adamc@1054	1529
adamc@311	1530 char *uw_Basis_attrifyString(uw_context ctx, uw_Basis_string s) {
adamc@136	1531 int len = strlen(s);
adamc@136	1532 char result, p;
adamc@311	1533 uw_check_heap(ctx, len * 6 + 1);
adamc@136	1534
adamc@666	1535 result = p = ctx->heap.front;
adamc@136	1536
adamc@136	1537 for (; *s; s++) {
adamc@1054	1538 unsigned char c = *s;
adamc@136	1539
adamc@136	1540 if (c == '"') {
adamc@136	1541 strcpy(p, """);
adamc@136	1542 p += 6;
adamc@136	1543 } else if (c == '&') {
adamc@136	1544 strcpy(p, "&");
adamc@136	1545 p += 5;
adamc@136	1546 }
adamc@1059	1547 else
adamc@136	1548 *p++ = c;
adamc@136	1549 }
adamc@136	1550
adamc@137	1551 *p++ = 0;
adamc@666	1552 ctx->heap.front = p;
adamc@136	1553 return result;
adamc@106	1554 }
adamc@106	1555
adamc@1011	1556 char *uw_Basis_attrifyChar(uw_context ctx, uw_Basis_char c) {
adamc@1011	1557 char result, p;
adamc@1011	1558 uw_check_heap(ctx, 7);
adamc@1011	1559
adamc@1011	1560 result = p = ctx->heap.front;
adamc@1011	1561
adamc@1011	1562 if (c == '"') {
adamc@1011	1563 strcpy(p, """);
adamc@1011	1564 p += 6;
adamc@1011	1565 } else if (c == '&') {
adamc@1011	1566 strcpy(p, "&");
adamc@1011	1567 p += 5;
adamc@1011	1568 }
adamc@1059	1569 else
adamc@1011	1570 *p++ = c;
adamc@1011	1571
adamc@1011	1572 *p++ = 0;
adamc@1011	1573 ctx->heap.front = p;
adamc@1011	1574 return result;
adamc@1011	1575 }
adamc@1011	1576
adamc@721	1577 char *uw_Basis_attrifyCss_class(uw_context ctx, uw_Basis_css_class s) {
adamc@721	1578 return s;
adamc@721	1579 }
adamc@721	1580
adamc@311	1581 static void uw_Basis_attrifyInt_w_unsafe(uw_context ctx, uw_Basis_int n) {
adamc@117	1582 int len;
adamc@117	1583
adamc@666	1584 sprintf(ctx->page.front, "%lld%n", n, &len);
adamc@666	1585 ctx->page.front += len;
adamc@106	1586 }
adamc@106	1587
adamc@428	1588 uw_unit uw_Basis_attrifyInt_w(uw_context ctx, uw_Basis_int n) {
adamc@311	1589 uw_check(ctx, INTS_MAX);
adamc@311	1590 uw_Basis_attrifyInt_w_unsafe(ctx, n);
adamc@428	1591
adamc@428	1592 return uw_unit_v;
adamc@106	1593 }
adamc@106	1594
adamc@428	1595 uw_unit uw_Basis_attrifyFloat_w(uw_context ctx, uw_Basis_float n) {
adamc@117	1596 int len;
adamc@117	1597
adamc@311	1598 uw_check(ctx, FLOATS_MAX);
adamc@666	1599 sprintf(ctx->page.front, "%g%n", n, &len);
adamc@666	1600 ctx->page.front += len;
adamc@428	1601
adamc@428	1602 return uw_unit_v;
adamc@117	1603 }
adamc@117	1604
adamc@428	1605 uw_unit uw_Basis_attrifyString_w(uw_context ctx, uw_Basis_string s) {
adamc@311	1606 uw_check(ctx, strlen(s) * 6);
adamc@117	1607
adamc@106	1608 for (; *s; s++) {
adamc@1054	1609 unsigned char c = *s;
adamc@106	1610
adamc@106	1611 if (c == '"')
adamc@311	1612 uw_write_unsafe(ctx, """);
adamc@136	1613 else if (c == '&')
adamc@311	1614 uw_write_unsafe(ctx, "&");
adamc@1059	1615 else
adamc@311	1616 uw_writec_unsafe(ctx, c);
adamc@106	1617 }
adamc@428	1618
adamc@428	1619 return uw_unit_v;
adamc@106	1620 }
adamc@120	1621
adamc@1011	1622 uw_unit uw_Basis_attrifyChar_w(uw_context ctx, uw_Basis_char c) {
adamc@1011	1623 uw_check(ctx, 6);
adamc@1011	1624
adamc@1011	1625 if (c == '"')
adamc@1011	1626 uw_write_unsafe(ctx, """);
adamc@1011	1627 else if (c == '&')
adamc@1011	1628 uw_write_unsafe(ctx, "&");
adamc@1059	1629 else
adamc@1011	1630 uw_writec_unsafe(ctx, c);
adamc@1011	1631
adamc@1011	1632 return uw_unit_v;
adamc@1011	1633 }
adamc@1011	1634
adamc@120	1635
adamc@311	1636 char *uw_Basis_urlifyInt(uw_context ctx, uw_Basis_int n) {
adamc@137	1637 int len;
adamc@137	1638 char *r;
adamc@137	1639
adamc@311	1640 uw_check_heap(ctx, INTS_MAX);
adamc@666	1641 r = ctx->heap.front;
adamc@276	1642 sprintf(r, "%lld%n", n, &len);
adamc@666	1643 ctx->heap.front += len+1;
adamc@137	1644 return r;
adamc@120	1645 }
adamc@120	1646
adamc@682	1647 char *uw_Basis_urlifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	1648 if (ctx->client == NULL \|\| chn.cli != ctx->client->id)
adamc@682	1649 return "";
adamc@682	1650 else {
adamc@682	1651 int len;
adamc@682	1652 char *r;
adamc@679	1653
adamc@682	1654 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	1655 r = ctx->heap.front;
adamc@682	1656 sprintf(r, "%u%n", chn.chn, &len);
adamc@682	1657 ctx->heap.front += len+1;
adamc@682	1658 return r;
adamc@682	1659 }
adamc@679	1660 }
adamc@679	1661
adamc@311	1662 char *uw_Basis_urlifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@137	1663 int len;
adamc@137	1664 char *r;
adamc@137	1665
adamc@311	1666 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	1667 r = ctx->heap.front;
adamc@137	1668 sprintf(r, "%g%n", n, &len);
adamc@666	1669 ctx->heap.front += len+1;
adamc@137	1670 return r;
adamc@120	1671 }
adamc@120	1672
adamc@311	1673 char *uw_Basis_urlifyString(uw_context ctx, uw_Basis_string s) {
adamc@137	1674 char r, p;
adamc@137	1675
adamc@925	1676 if (s[0] == '\0')
adamc@925	1677 return "_";
adamc@925	1678
adamc@925	1679 uw_check_heap(ctx, strlen(s) * 3 + 1 + !!(s[0] == '_'));
adamc@925	1680
adamc@925	1681 r = p = ctx->heap.front;
adamc@925	1682 if (s[0] == '_')
adamc@925	1683 *p++ = '_';
adamc@925	1684
adamc@925	1685 for (; *s; s++) {
adamc@1087	1686 unsigned char c = *s;
adamc@137	1687
adamc@137	1688 if (c == ' ')
adamc@137	1689 *p++ = '+';
adamc@137	1690 else if (isalnum(c))
adamc@137	1691 *p++ = c;
adamc@137	1692 else {
adamc@137	1693 sprintf(p, "%%%02X", c);
adamc@137	1694 p += 3;
adamc@137	1695 }
adamc@137	1696 }
adamc@137	1697
adamc@137	1698 *p++ = 0;
adamc@666	1699 ctx->heap.front = p;
adamc@137	1700 return r;
adamc@120	1701 }
adamc@120	1702
adamc@311	1703 char *uw_Basis_urlifyBool(uw_context ctx, uw_Basis_bool b) {
adamc@311	1704 if (b == uw_Basis_False)
adamc@186	1705 return "0";
adamc@186	1706 else
adamc@186	1707 return "1";
adamc@186	1708 }
adamc@186	1709
adamc@311	1710 static void uw_Basis_urlifyInt_w_unsafe(uw_context ctx, uw_Basis_int n) {
adamc@120	1711 int len;
adamc@120	1712
adamc@666	1713 sprintf(ctx->page.front, "%lld%n", n, &len);
adamc@666	1714 ctx->page.front += len;
adamc@120	1715 }
adamc@120	1716
adamc@428	1717 uw_unit uw_Basis_urlifyInt_w(uw_context ctx, uw_Basis_int n) {
adamc@311	1718 uw_check(ctx, INTS_MAX);
adamc@311	1719 uw_Basis_urlifyInt_w_unsafe(ctx, n);
adamc@428	1720
adamc@428	1721 return uw_unit_v;
adamc@120	1722 }
adamc@120	1723
adamc@682	1724 uw_unit uw_Basis_urlifyChannel_w(uw_context ctx, uw_Basis_channel chn) {
adamc@682	1725 if (ctx->client != NULL && chn.cli == ctx->client->id) {
adamc@682	1726 int len;
adamc@682	1727
adamc@682	1728 uw_check(ctx, INTS_MAX + 1);
adamc@682	1729 sprintf(ctx->page.front, "%u%n", chn.chn, &len);
adamc@682	1730 ctx->page.front += len;
adamc@682	1731 }
adamc@682	1732
adamc@679	1733 return uw_unit_v;
adamc@679	1734 }
adamc@679	1735
adamc@428	1736 uw_unit uw_Basis_urlifyFloat_w(uw_context ctx, uw_Basis_float n) {
adamc@120	1737 int len;
adamc@120	1738
adamc@311	1739 uw_check(ctx, FLOATS_MAX);
adamc@666	1740 sprintf(ctx->page.front, "%g%n", n, &len);
adamc@666	1741 ctx->page.front += len;
adamc@428	1742
adamc@428	1743 return uw_unit_v;
adamc@120	1744 }
adamc@120	1745
adamc@488	1746 uw_Basis_string uw_Basis_urlifyTime(uw_context ctx, uw_Basis_time t) {
adamc@488	1747 return uw_Basis_urlifyInt(ctx, t);
adamc@488	1748 }
adamc@488	1749
adamc@428	1750 uw_unit uw_Basis_urlifyString_w(uw_context ctx, uw_Basis_string s) {
adamc@925	1751 if (s[0] == '\0') {
adamc@925	1752 uw_check(ctx, 1);
adamc@925	1753 uw_writec_unsafe(ctx, '_');
adamc@925	1754 return uw_unit_v;
adamc@925	1755 }
adamc@925	1756
adamc@925	1757 uw_check(ctx, strlen(s) * 3 + !!(s[0] == '_'));
adamc@925	1758
adamc@925	1759 if (s[0] == '_')
adamc@925	1760 uw_writec_unsafe(ctx, '_');
adamc@120	1761
adamc@120	1762 for (; *s; s++) {
adamc@1087	1763 unsigned char c = *s;
adamc@120	1764
adamc@120	1765 if (c == ' ')
adamc@311	1766 uw_writec_unsafe(ctx, '+');
adamc@120	1767 else if (isalnum(c))
adamc@311	1768 uw_writec_unsafe(ctx, c);
adamc@120	1769 else {
adamc@666	1770 sprintf(ctx->page.front, "%%%02X", c);
adamc@666	1771 ctx->page.front += 3;
adamc@120	1772 }
adamc@120	1773 }
adamc@428	1774
adamc@428	1775 return uw_unit_v;
adamc@120	1776 }
adamc@120	1777
adamc@428	1778 uw_unit uw_Basis_urlifyBool_w(uw_context ctx, uw_Basis_bool b) {
adamc@311	1779 if (b == uw_Basis_False)
adamc@311	1780 uw_writec(ctx, '0');
adamc@186	1781 else
adamc@311	1782 uw_writec(ctx, '1');
adamc@428	1783
adamc@428	1784 return uw_unit_v;
adamc@186	1785 }
adamc@186	1786
adamc@120	1787
adamc@311	1788 static char uw_unurlify_advance(char s) {
adamc@144	1789 char *new_s = strchr(s, '/');
adamc@120	1790
adamc@120	1791 if (new_s)
adamc@120	1792 *new_s++ = 0;
adamc@120	1793 else
adamc@144	1794 new_s = strchr(s, 0);
adamc@144	1795
adamc@144	1796 return new_s;
adamc@144	1797 }
adamc@144	1798
adamc@311	1799 uw_Basis_int uw_Basis_unurlifyInt(uw_context ctx, char **s) {
adamc@311	1800 char new_s = uw_unurlify_advance(s);
adamc@311	1801 uw_Basis_int r;
adamc@120	1802
adamc@276	1803 r = atoll(*s);
adamc@120	1804 *s = new_s;
adamc@120	1805 return r;
adamc@120	1806 }
adamc@120	1807
adamc@311	1808 uw_Basis_float uw_Basis_unurlifyFloat(uw_context ctx, char **s) {
adamc@311	1809 char new_s = uw_unurlify_advance(s);
adamc@311	1810 uw_Basis_float r;
adamc@120	1811
adamc@120	1812 r = atof(*s);
adamc@120	1813 *s = new_s;
adamc@120	1814 return r;
adamc@120	1815 }
adamc@120	1816
adamc@488	1817 uw_Basis_time uw_Basis_unurlifyTime(uw_context ctx, char **s) {
adamc@488	1818 return uw_Basis_unurlifyInt(ctx, s);
adamc@488	1819 }
adamc@488	1820
adamc@1023	1821 static uw_Basis_string uw_unurlifyString_to(int fromClient, uw_context ctx, char r, char s) {
adamc@927	1822 char s1, s2 = s;
adamc@144	1823 int n;
adamc@136	1824
adamc@1023	1825 if (!fromClient) {
adamc@1023	1826 if (*s2 == '_')
adamc@1023	1827 ++s2;
adamc@1023	1828 else if (s2[0] == '%' && s2[1] == '5' && (s2[2] == 'f' \|\| s2[2] == 'F'))
adamc@1023	1829 s2 += 3;
adamc@1023	1830 }
adamc@925	1831
adamc@927	1832 for (s1 = r; *s2; ++s1, ++s2) {
adamc@1087	1833 unsigned char c = *s2;
adamc@136	1834
adamc@136	1835 switch (c) {
adamc@136	1836 case '+':
adamc@136	1837 *s1 = ' ';
adamc@136	1838 break;
adamc@136	1839 case '%':
adamc@169	1840 if (s2[1] == 0)
adamc@311	1841 uw_error(ctx, FATAL, "Missing first character of escaped URL byte");
adamc@169	1842 if (s2[2] == 0)
adamc@311	1843 uw_error(ctx, FATAL, "Missing second character of escaped URL byte");
adamc@169	1844 if (sscanf(s2+1, "%02X", &n) != 1)
adamc@311	1845 uw_error(ctx, FATAL, "Invalid escaped URL byte starting at: %s", s2);
adamc@136	1846 *s1 = n;
adamc@136	1847 s2 += 2;
adamc@136	1848 break;
adamc@136	1849 default:
adamc@136	1850 *s1 = c;
adamc@136	1851 }
adamc@136	1852 }
adamc@136	1853 *s1++ = 0;
adamc@144	1854 return s1;
adamc@144	1855 }
adamc@144	1856
adamc@311	1857 uw_Basis_bool uw_Basis_unurlifyBool(uw_context ctx, char **s) {
adamc@311	1858 char new_s = uw_unurlify_advance(s);
adamc@311	1859 uw_Basis_bool r;
adamc@186	1860
adamc@186	1861 if (s[0] == 0 \|\| !strcmp(s, "0") \|\| !strcmp(*s, "off"))
adamc@311	1862 r = uw_Basis_False;
adamc@186	1863 else
adamc@311	1864 r = uw_Basis_True;
adamc@186	1865
adamc@186	1866 *s = new_s;
adamc@186	1867 return r;
adamc@186	1868 }
adamc@186	1869
adamc@311	1870 uw_Basis_string uw_Basis_unurlifyString(uw_context ctx, char **s) {
adamc@311	1871 char new_s = uw_unurlify_advance(s);
adamc@144	1872 char r, s1, *s2;
adamc@144	1873 int len, n;
adamc@144	1874
adamc@200	1875 len = strlen(*s);
adamc@311	1876 uw_check_heap(ctx, len + 1);
adamc@144	1877
adamc@666	1878 r = ctx->heap.front;
adamc@1023	1879 ctx->heap.front = uw_unurlifyString_to(0, ctx, ctx->heap.front, *s);
adamc@1023	1880 *s = new_s;
adamc@1023	1881 return r;
adamc@1023	1882 }
adamc@1023	1883
adamc@1109	1884 uw_Basis_unit uw_Basis_unurlifyUnit(uw_context ctx, char **s) {
adamc@1109	1885 s = uw_unurlify_advance(s);
adamc@1109	1886 return uw_unit_v;
adamc@1109	1887 }
adamc@1109	1888
adamc@1023	1889 uw_Basis_string uw_Basis_unurlifyString_fromClient(uw_context ctx, char **s) {
adamc@1023	1890 char new_s = uw_unurlify_advance(s);
adamc@1023	1891 char r, s1, *s2;
adamc@1023	1892 int len, n;
adamc@1023	1893
adamc@1023	1894 len = strlen(*s);
adamc@1023	1895 uw_check_heap(ctx, len + 1);
adamc@1023	1896
adamc@1023	1897 r = ctx->heap.front;
adamc@1023	1898 ctx->heap.front = uw_unurlifyString_to(1, ctx, ctx->heap.front, *s);
adamc@136	1899 *s = new_s;
adamc@136	1900 return r;
adamc@120	1901 }
adamc@135	1902
adamc@135	1903
adamc@311	1904 char *uw_Basis_htmlifyInt(uw_context ctx, uw_Basis_int n) {
adamc@286	1905 int len;
adamc@286	1906 char *r;
adamc@286	1907
adamc@311	1908 uw_check_heap(ctx, INTS_MAX);
adamc@666	1909 r = ctx->heap.front;
adamc@286	1910 sprintf(r, "%lld%n", n, &len);
adamc@666	1911 ctx->heap.front += len+1;
adamc@286	1912 return r;
adamc@286	1913 }
adamc@286	1914
adamc@428	1915 uw_unit uw_Basis_htmlifyInt_w(uw_context ctx, uw_Basis_int n) {
adamc@286	1916 int len;
adamc@286	1917
adamc@311	1918 uw_check(ctx, INTS_MAX);
adamc@666	1919 sprintf(ctx->page.front, "%lld%n", n, &len);
adamc@666	1920 ctx->page.front += len;
adamc@428	1921
adamc@428	1922 return uw_unit_v;
adamc@286	1923 }
adamc@286	1924
adamc@311	1925 char *uw_Basis_htmlifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@286	1926 int len;
adamc@286	1927 char *r;
adamc@286	1928
adamc@311	1929 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	1930 r = ctx->heap.front;
adamc@286	1931 sprintf(r, "%g%n", n, &len);
adamc@666	1932 ctx->heap.front += len+1;
adamc@286	1933 return r;
adamc@286	1934 }
adamc@286	1935
adamc@428	1936 uw_unit uw_Basis_htmlifyFloat_w(uw_context ctx, uw_Basis_float n) {
adamc@286	1937 int len;
adamc@286	1938
adamc@311	1939 uw_check(ctx, FLOATS_MAX);
adamc@666	1940 sprintf(ctx->page.front, "%g%n", n, &len);
adamc@666	1941 ctx->page.front += len;
adamc@428	1942
adamc@428	1943 return uw_unit_v;
adamc@286	1944 }
adamc@286	1945
adamc@311	1946 char *uw_Basis_htmlifyString(uw_context ctx, uw_Basis_string s) {
adamc@137	1947 char r, s2;
adamc@137	1948
adamc@311	1949 uw_check_heap(ctx, strlen(s) * 5 + 1);
adamc@137	1950
adamc@666	1951 for (r = s2 = ctx->heap.front; *s; s++) {
adamc@1054	1952 unsigned char c = *s;
adamc@137	1953
adamc@137	1954 switch (c) {
adamc@137	1955 case '<':
adamc@137	1956 strcpy(s2, "<");
adamc@137	1957 s2 += 4;
adamc@137	1958 break;
adamc@137	1959 case '&':
adamc@137	1960 strcpy(s2, "&");
adamc@137	1961 s2 += 5;
adamc@137	1962 break;
adamc@137	1963 default:
adamc@1059	1964 *s2++ = c;
adamc@137	1965 }
adamc@137	1966 }
adamc@137	1967
adamc@137	1968 *s2++ = 0;
adamc@666	1969 ctx->heap.front = s2;
adamc@137	1970 return r;
adamc@135	1971 }
adamc@135	1972
adamc@428	1973 uw_unit uw_Basis_htmlifyString_w(uw_context ctx, uw_Basis_string s) {
adamc@321	1974 uw_check(ctx, strlen(s) * 6);
adamc@135	1975
adamc@135	1976 for (; *s; s++) {
adamc@1054	1977 unsigned char c = *s;
adamc@135	1978
adamc@135	1979 switch (c) {
adamc@135	1980 case '<':
adamc@311	1981 uw_write_unsafe(ctx, "<");
adamc@135	1982 break;
adamc@135	1983 case '&':
adamc@311	1984 uw_write_unsafe(ctx, "&");
adamc@135	1985 break;
adamc@135	1986 default:
adamc@1059	1987 uw_writec_unsafe(ctx, c);
adamc@135	1988 }
adamc@135	1989 }
adamc@428	1990
adamc@428	1991 return uw_unit_v;
adamc@135	1992 }
adamc@180	1993
adamc@311	1994 uw_Basis_string uw_Basis_htmlifyBool(uw_context ctx, uw_Basis_bool b) {
adamc@311	1995 if (b == uw_Basis_False)
adamc@286	1996 return "False";
adamc@286	1997 else
adamc@286	1998 return "True";
adamc@286	1999 }
adamc@286	2000
adamc@428	2001 uw_unit uw_Basis_htmlifyBool_w(uw_context ctx, uw_Basis_bool b) {
adamc@311	2002 if (b == uw_Basis_False) {
adamc@311	2003 uw_check(ctx, 6);
adamc@666	2004 strcpy(ctx->page.front, "False");
adamc@666	2005 ctx->page.front += 5;
adamc@286	2006 } else {
adamc@311	2007 uw_check(ctx, 5);
adamc@666	2008 strcpy(ctx->page.front, "True");
adamc@666	2009 ctx->page.front += 4;
adamc@286	2010 }
adamc@428	2011
adamc@428	2012 return uw_unit_v;
adamc@286	2013 }
adamc@286	2014
adamc@436	2015 #define TIME_FMT "%x %X"
adamc@438	2016 #define TIME_FMT_PG "%Y-%m-%d %T"
adamc@436	2017
adamc@436	2018 uw_Basis_string uw_Basis_htmlifyTime(uw_context ctx, uw_Basis_time t) {
adamc@436	2019 size_t len;
adamc@436	2020 char *r;
adamc@436	2021 struct tm stm;
adamc@436	2022
adamc@436	2023 if (localtime_r(&t, &stm)) {
adamc@436	2024 uw_check_heap(ctx, TIMES_MAX);
adamc@666	2025 r = ctx->heap.front;
adamc@436	2026 len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
adamc@666	2027 ctx->heap.front += len+1;
adamc@436	2028 return r;
adamc@436	2029 } else
adamc@436	2030 return "<i>Invalid time</i>";
adamc@436	2031 }
adamc@436	2032
adamc@436	2033 uw_unit uw_Basis_htmlifyTime_w(uw_context ctx, uw_Basis_time t) {
adamc@436	2034 size_t len;
adamc@436	2035 char *r;
adamc@436	2036 struct tm stm;
adamc@436	2037
adamc@436	2038 if (localtime_r(&t, &stm)) {
adamc@436	2039 uw_check(ctx, TIMES_MAX);
adamc@666	2040 r = ctx->page.front;
adamc@436	2041 len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
adamc@666	2042 ctx->page.front += len;
adamc@436	2043 } else {
adamc@436	2044 uw_check(ctx, 20);
adamc@666	2045 strcpy(ctx->page.front, "<i>Invalid time</i>");
adamc@666	2046 ctx->page.front += 19;
adamc@436	2047 }
adamc@436	2048
adamc@436	2049 return uw_unit_v;
adamc@436	2050 }
adamc@436	2051
adamc@821	2052 uw_Basis_char uw_Basis_strsub(uw_context ctx, uw_Basis_string s, uw_Basis_int n) {
adamc@821	2053 if (n >= 0 && n < strlen(s))
adamc@821	2054 return s[n];
adamc@821	2055 else
adamc@821	2056 uw_error(ctx, FATAL, "Out-of-bounds strsub");
adamc@821	2057 }
adamc@821	2058
adamc@821	2059 uw_Basis_string uw_Basis_strsuffix(uw_context ctx, uw_Basis_string s, uw_Basis_int n) {
adamc@821	2060 if (n >= 0 && n < strlen(s))
adamc@821	2061 return &s[n];
adamc@821	2062 else
adamc@821	2063 uw_error(ctx, FATAL, "Out-of-bounds strsuffix");
adamc@821	2064 }
adamc@821	2065
adamc@828	2066 uw_Basis_int uw_Basis_strlen(uw_context ctx, uw_Basis_string s) {
adamc@828	2067 return strlen(s);
adamc@828	2068 }
adamc@828	2069
adamc@829	2070 uw_Basis_string uw_Basis_strchr(uw_context ctx, uw_Basis_string s, uw_Basis_char ch) {
adamc@829	2071 return strchr(s, ch);
adamc@829	2072 }
adamc@829	2073
adamc@831	2074 uw_Basis_int uw_Basis_strcspn(uw_context ctx, uw_Basis_string s, uw_Basis_string chs) {
adamc@831	2075 return strcspn(s, chs);
adamc@831	2076 }
adamc@831	2077
adamc@829	2078 uw_Basis_int *uw_Basis_strindex(uw_context ctx, uw_Basis_string s, uw_Basis_char ch) {
adamc@829	2079 uw_Basis_string r = strchr(s, ch);
adamc@829	2080 if (r == NULL)
adamc@829	2081 return NULL;
adamc@829	2082 else {
adamc@829	2083 uw_Basis_int *nr = uw_malloc(ctx, sizeof(uw_Basis_int));
adamc@829	2084 *nr = r - s;
adamc@829	2085 return nr;
adamc@829	2086 }
adamc@829	2087 }
adamc@829	2088
adamc@311	2089 uw_Basis_string uw_Basis_strcat(uw_context ctx, uw_Basis_string s1, uw_Basis_string s2) {
adamc@828	2090 int len = uw_Basis_strlen(ctx, s1) + uw_Basis_strlen(ctx, s2) + 1;
adamc@180	2091 char *s;
adamc@180	2092
adamc@311	2093 uw_check_heap(ctx, len);
adamc@180	2094
adamc@666	2095 s = ctx->heap.front;
adamc@180	2096
adamc@180	2097 strcpy(s, s1);
adamc@180	2098 strcat(s, s2);
adamc@666	2099 ctx->heap.front += len;
adamc@180	2100
adamc@180	2101 return s;
adamc@180	2102 }
adamc@278	2103
adamc@829	2104 uw_Basis_string uw_Basis_substring(uw_context ctx, uw_Basis_string s, uw_Basis_int start, uw_Basis_int len) {
adamc@829	2105 size_t full_len = uw_Basis_strlen(ctx, s);
adamc@829	2106
adamc@829	2107 if (start < 0)
adamc@829	2108 uw_error(ctx, FATAL, "substring: Negative start index");
adamc@829	2109 if (len < 0)
adamc@829	2110 uw_error(ctx, FATAL, "substring: Negative length");
adamc@829	2111 if (start + len > full_len)
adamc@829	2112 uw_error(ctx, FATAL, "substring: Start index plus length is too large");
adamc@829	2113
adamc@829	2114 if (start + len == full_len)
adamc@829	2115 return &s[start];
adamc@829	2116 else {
adamc@829	2117 uw_Basis_string r = uw_malloc(ctx, len+1);
adamc@959	2118 memcpy(r, s+start, len);
adamc@829	2119 r[len] = 0;
adamc@829	2120 return r;
adamc@829	2121 }
adamc@829	2122
adamc@829	2123 }
adamc@829	2124
adamc@1023	2125 uw_Basis_string uw_Basis_str1(uw_context ctx, uw_Basis_char ch) {
adamc@1023	2126 char *r;
adamc@1023	2127
adamc@1023	2128 uw_check_heap(ctx, 2);
adamc@1023	2129 r = ctx->heap.front;
adamc@1023	2130 r[0] = ch;
adamc@1023	2131 r[1] = 0;
adamc@1023	2132
adamc@1023	2133 ctx->heap.front += 2;
adamc@1023	2134
adamc@1023	2135 return r;
adamc@1023	2136 }
adamc@1023	2137
adamc@737	2138 uw_Basis_string uw_strdup(uw_context ctx, uw_Basis_string s1) {
adamc@828	2139 int len = uw_Basis_strlen(ctx, s1) + 1;
adamc@278	2140 char *s;
adamc@278	2141
adamc@311	2142 uw_check_heap(ctx, len);
adamc@278	2143
adamc@666	2144 s = ctx->heap.front;
adamc@278	2145
adamc@278	2146 strcpy(s, s1);
adamc@666	2147 ctx->heap.front += len;
adamc@278	2148
adamc@278	2149 return s;
adamc@278	2150 }
adamc@280	2151
adamc@737	2152 uw_Basis_string uw_maybe_strdup(uw_context ctx, uw_Basis_string s1) {
adamc@493	2153 if (s1)
adamc@737	2154 return uw_strdup(ctx, s1);
adamc@493	2155 else
adamc@493	2156 return NULL;
adamc@493	2157 }
adamc@493	2158
adamc@742	2159 char uw_memdup(uw_context ctx, const char p, size_t len) {
adamc@742	2160 char *r = uw_malloc(ctx, len);
adamc@742	2161 memcpy(r, p, len);
adamc@742	2162 return r;
adamc@742	2163 }
adamc@280	2164
adamc@879	2165 char *uw_sqlfmtInt = "%lld::int8%n";
adamc@879	2166
adamc@311	2167 char *uw_Basis_sqlifyInt(uw_context ctx, uw_Basis_int n) {
adamc@281	2168 int len;
adamc@281	2169 char *r;
adamc@281	2170
adamc@311	2171 uw_check_heap(ctx, INTS_MAX + 6);
adamc@666	2172 r = ctx->heap.front;
adamc@879	2173 sprintf(r, uw_sqlfmtInt, n, &len);
adamc@666	2174 ctx->heap.front += len+1;
adamc@281	2175 return r;
adamc@281	2176 }
adamc@281	2177
adamc@467	2178 char uw_Basis_sqlifyIntN(uw_context ctx, uw_Basis_int n) {
adamc@467	2179 if (n == NULL)
adamc@467	2180 return "NULL";
adamc@467	2181 else
adamc@467	2182 return uw_Basis_sqlifyInt(ctx, *n);
adamc@467	2183 }
adamc@467	2184
adamc@879	2185 char *uw_sqlfmtFloat = "%g::float8%n";
adamc@879	2186
adamc@311	2187 char *uw_Basis_sqlifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@281	2188 int len;
adamc@281	2189 char *r;
adamc@281	2190
adamc@311	2191 uw_check_heap(ctx, FLOATS_MAX + 8);
adamc@666	2192 r = ctx->heap.front;
adamc@879	2193 sprintf(r, uw_sqlfmtFloat, n, &len);
adamc@666	2194 ctx->heap.front += len+1;
adamc@281	2195 return r;
adamc@281	2196 }
adamc@281	2197
adamc@467	2198 char uw_Basis_sqlifyFloatN(uw_context ctx, uw_Basis_float n) {
adamc@467	2199 if (n == NULL)
adamc@467	2200 return "NULL";
adamc@467	2201 else
adamc@467	2202 return uw_Basis_sqlifyFloat(ctx, *n);
adamc@467	2203 }
adamc@467	2204
adamc@879	2205 int uw_Estrings = 1;
adamc@879	2206 char *uw_sqlsuffixString = "::text";
adamc@1011	2207 char *uw_sqlsuffixChar = "::char";
adamc@281	2208
adamc@311	2209 uw_Basis_string uw_Basis_sqlifyString(uw_context ctx, uw_Basis_string s) {
adamc@280	2210 char r, s2;
adamc@280	2211
adamc@879	2212 uw_check_heap(ctx, strlen(s) * 2 + 3 + uw_Estrings + strlen(uw_sqlsuffixString));
adamc@280	2213
adamc@666	2214 r = s2 = ctx->heap.front;
adamc@879	2215 if (uw_Estrings)
adamc@879	2216 *s2++ = 'E';
adamc@280	2217 *s2++ = '\'';
adamc@280	2218
adamc@280	2219 for (; *s; s++) {
adamc@280	2220 char c = *s;
adamc@280	2221
adamc@280	2222 switch (c) {
adamc@280	2223 case '\'':
adamc@885	2224 if (uw_Estrings)
adamc@885	2225 strcpy(s2, "\\'");
adamc@885	2226 else
adamc@885	2227 strcpy(s2, "''");
adamc@280	2228 s2 += 2;
adamc@280	2229 break;
adamc@280	2230 case '\\':
adamc@885	2231 if (uw_Estrings) {
adamc@885	2232 strcpy(s2, "\\\\");
adamc@885	2233 s2 += 2;
adamc@885	2234 } else
adamc@885	2235 *s2++ = '\\';
adamc@280	2236 break;
adamc@280	2237 default:
adamc@280	2238 if (isprint(c))
adamc@280	2239 *s2++ = c;
adamc@879	2240 else if (uw_Estrings) {
adamc@737	2241 sprintf(s2, "\\%03o", c);
adamc@280	2242 s2 += 4;
adamc@280	2243 }
adamc@879	2244 else
adamc@879	2245 uw_error(ctx, FATAL, "Non-printable character %u in string to SQLify", c);
adamc@280	2246 }
adamc@280	2247 }
adamc@280	2248
adamc@879	2249 *s2++ = '\'';
adamc@879	2250 strcpy(s2, uw_sqlsuffixString);
adamc@879	2251 ctx->heap.front = s2 + 1 + strlen(uw_sqlsuffixString);
adamc@280	2252 return r;
adamc@280	2253 }
adamc@281	2254
adamc@1011	2255 uw_Basis_string uw_Basis_sqlifyChar(uw_context ctx, uw_Basis_char c) {
adamc@1011	2256 char r, s2;
adamc@1011	2257
adamc@1011	2258 uw_check_heap(ctx, 5 + uw_Estrings + strlen(uw_sqlsuffixChar));
adamc@1011	2259
adamc@1011	2260 r = s2 = ctx->heap.front;
adamc@1011	2261 if (uw_Estrings)
adamc@1011	2262 *s2++ = 'E';
adamc@1011	2263 *s2++ = '\'';
adamc@1011	2264
adamc@1011	2265 switch (c) {
adamc@1011	2266 case '\'':
adamc@1011	2267 if (uw_Estrings)
adamc@1011	2268 strcpy(s2, "\\'");
adamc@1011	2269 else
adamc@1011	2270 strcpy(s2, "''");
adamc@1011	2271 s2 += 2;
adamc@1011	2272 break;
adamc@1011	2273 case '\\':
adamc@1011	2274 if (uw_Estrings) {
adamc@1011	2275 strcpy(s2, "\\\\");
adamc@1011	2276 s2 += 2;
adamc@1011	2277 } else
adamc@1011	2278 *s2++ = '\\';
adamc@1011	2279 break;
adamc@1011	2280 default:
adamc@1011	2281 if (isprint(c))
adamc@1011	2282 *s2++ = c;
adamc@1011	2283 else if (uw_Estrings) {
adamc@1011	2284 sprintf(s2, "\\%03o", c);
adamc@1011	2285 s2 += 4;
adamc@1011	2286 }
adamc@1011	2287 else
adamc@1011	2288 uw_error(ctx, FATAL, "Non-printable character %u in char to SQLify", c);
adamc@1011	2289 }
adamc@1011	2290
adamc@1011	2291 *s2++ = '\'';
adamc@1011	2292 strcpy(s2, uw_sqlsuffixChar);
adamc@1011	2293 ctx->heap.front = s2 + 1 + strlen(uw_sqlsuffixChar);
adamc@1011	2294 return r;
adamc@1011	2295 }
adamc@1011	2296
adamc@879	2297 char *uw_sqlsuffixBlob = "::bytea";
adamc@879	2298
adamc@737	2299 uw_Basis_string uw_Basis_sqlifyBlob(uw_context ctx, uw_Basis_blob b) {
adamc@737	2300 char r, s2;
adamc@737	2301 size_t i;
adamc@737	2302
adamc@879	2303 uw_check_heap(ctx, b.size * 5 + 3 + uw_Estrings + strlen(uw_sqlsuffixBlob));
adamc@737	2304
adamc@737	2305 r = s2 = ctx->heap.front;
adamc@879	2306 if (uw_Estrings)
adamc@879	2307 *s2++ = 'E';
adamc@737	2308 *s2++ = '\'';
adamc@737	2309
adamc@737	2310 for (i = 0; i < b.size; ++i) {
adamc@737	2311 char c = b.data[i];
adamc@737	2312
adamc@737	2313 switch (c) {
adamc@737	2314 case '\'':
adamc@885	2315 if (uw_Estrings)
adamc@885	2316 strcpy(s2, "\\'");
adamc@885	2317 else
adamc@885	2318 strcpy(s2, "''");
adamc@737	2319 s2 += 2;
adamc@737	2320 break;
adamc@737	2321 case '\\':
adamc@885	2322 if (uw_Estrings) {
adamc@885	2323 strcpy(s2, "\\\\\\\\");
adamc@885	2324 s2 += 4;
adamc@885	2325 } else
adamc@885	2326 *s2++ = '\\';
adamc@737	2327 break;
adamc@737	2328 default:
adamc@737	2329 if (isprint(c))
adamc@737	2330 *s2++ = c;
adamc@879	2331 else if (uw_Estrings) {
adamc@737	2332 sprintf(s2, "\\\\%03o", c);
adamc@737	2333 s2 += 5;
adamc@737	2334 }
adamc@879	2335 else
adamc@879	2336 uw_error(ctx, FATAL, "Non-printable character %u in blob to SQLify", c);
adamc@737	2337 }
adamc@737	2338 }
adamc@737	2339
adamc@879	2340 *s2++ = '\'';
adamc@879	2341 strcpy(s2, uw_sqlsuffixBlob);
adamc@879	2342 ctx->heap.front = s2 + 1 + strlen(uw_sqlsuffixBlob);
adamc@737	2343 return r;
adamc@737	2344 }
adamc@737	2345
adamc@682	2346 char *uw_Basis_sqlifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	2347 int len;
adamc@682	2348 char *r;
adamc@682	2349 unsigned long long combo = ((unsigned long long)chn.cli << 32) \| chn.chn;
adamc@682	2350
adamc@682	2351 uw_check_heap(ctx, INTS_MAX + 7);
adamc@682	2352 r = ctx->heap.front;
adamc@879	2353 sprintf(r, uw_sqlfmtInt, combo, &len);
adamc@682	2354 ctx->heap.front += len+1;
adamc@682	2355 return r;
adamc@682	2356 }
adamc@682	2357
adamc@682	2358 char *uw_Basis_attrifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	2359 int len;
adamc@682	2360 char *r;
adamc@682	2361 unsigned long long combo = ((unsigned long long)chn.cli << 32) \| chn.chn;
adamc@682	2362
adamc@682	2363 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	2364 r = ctx->heap.front;
adamc@682	2365 sprintf(r, "%lld%n", combo, &len);
adamc@682	2366 ctx->heap.front += len+1;
adamc@682	2367 return r;
adamc@682	2368 }
adamc@682	2369
adamc@879	2370 char *uw_sqlfmtUint4 = "%u::int4%n";
adamc@879	2371
adamc@682	2372 char *uw_Basis_sqlifyClient(uw_context ctx, uw_Basis_client cli) {
adamc@682	2373 int len;
adamc@682	2374 char *r;
adamc@682	2375
adamc@682	2376 uw_check_heap(ctx, INTS_MAX + 7);
adamc@682	2377 r = ctx->heap.front;
adamc@879	2378 sprintf(r, uw_sqlfmtUint4, cli, &len);
adamc@682	2379 ctx->heap.front += len+1;
adamc@682	2380 return r;
adamc@682	2381 }
adamc@682	2382
adamc@682	2383 char *uw_Basis_attrifyClient(uw_context ctx, uw_Basis_client cli) {
adamc@682	2384 int len;
adamc@682	2385 char *r;
adamc@682	2386
adamc@682	2387 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	2388 r = ctx->heap.front;
adamc@682	2389 sprintf(r, "%u%n", cli, &len);
adamc@682	2390 ctx->heap.front += len+1;
adamc@682	2391 return r;
adamc@682	2392 }
adamc@682	2393
adamc@467	2394 uw_Basis_string uw_Basis_sqlifyStringN(uw_context ctx, uw_Basis_string s) {
adamc@467	2395 if (s == NULL)
adamc@467	2396 return "NULL";
adamc@467	2397 else
adamc@467	2398 return uw_Basis_sqlifyString(ctx, s);
adamc@467	2399 }
adamc@467	2400
adamc@311	2401 char *uw_Basis_sqlifyBool(uw_context ctx, uw_Basis_bool b) {
adamc@311	2402 if (b == uw_Basis_False)
adamc@281	2403 return "FALSE";
adamc@281	2404 else
adamc@281	2405 return "TRUE";
adamc@281	2406 }
adamc@282	2407
adamc@467	2408 char uw_Basis_sqlifyBoolN(uw_context ctx, uw_Basis_bool b) {
adamc@467	2409 if (b == NULL)
adamc@467	2410 return "NULL";
adamc@467	2411 else
adamc@467	2412 return uw_Basis_sqlifyBool(ctx, *b);
adamc@467	2413 }
adamc@467	2414
adamc@439	2415 char *uw_Basis_sqlifyTime(uw_context ctx, uw_Basis_time t) {
adamc@439	2416 size_t len;
adamc@682	2417 char r, s;
adamc@682	2418 struct tm stm;
adamc@682	2419
adamc@682	2420 if (localtime_r(&t, &stm)) {
adamc@682	2421 s = uw_malloc(ctx, TIMES_MAX);
adamc@995	2422 --stm.tm_hour;
adamc@682	2423 len = strftime(s, TIMES_MAX, TIME_FMT, &stm);
adamc@682	2424 r = uw_malloc(ctx, len + 14);
adamc@682	2425 sprintf(r, "'%s'::timestamp", s);
adamc@682	2426 return r;
adamc@682	2427 } else
adamc@682	2428 return "<Invalid time>";
adamc@682	2429 }
adamc@682	2430
adamc@682	2431 char *uw_Basis_attrifyTime(uw_context ctx, uw_Basis_time t) {
adamc@682	2432 size_t len;
adamc@439	2433 char *r;
adamc@439	2434 struct tm stm;
adamc@439	2435
adamc@439	2436 if (localtime_r(&t, &stm)) {
adamc@439	2437 uw_check_heap(ctx, TIMES_MAX);
adamc@666	2438 r = ctx->heap.front;
adamc@439	2439 len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
adamc@666	2440 ctx->heap.front += len+1;
adamc@439	2441 return r;
adamc@439	2442 } else
adamc@439	2443 return "<Invalid time>";
adamc@439	2444 }
adamc@439	2445
adamc@467	2446 char uw_Basis_sqlifyTimeN(uw_context ctx, uw_Basis_time t) {
adamc@467	2447 if (t == NULL)
adamc@467	2448 return "NULL";
adamc@467	2449 else
adamc@467	2450 return uw_Basis_sqlifyTime(ctx, *t);
adamc@467	2451 }
adamc@467	2452
adamc@311	2453 char *uw_Basis_ensqlBool(uw_Basis_bool b) {
adamc@311	2454 static uw_Basis_int true = 1;
adamc@311	2455 static uw_Basis_int false = 0;
adamc@282	2456
adamc@311	2457 if (b == uw_Basis_False)
adamc@282	2458 return (char *)&false;
adamc@282	2459 else
adamc@282	2460 return (char *)&true;
adamc@282	2461 }
adamc@284	2462
adamc@311	2463 uw_Basis_string uw_Basis_intToString(uw_context ctx, uw_Basis_int n) {
adamc@284	2464 int len;
adamc@284	2465 char *r;
adamc@284	2466
adamc@311	2467 uw_check_heap(ctx, INTS_MAX);
adamc@666	2468 r = ctx->heap.front;
adamc@284	2469 sprintf(r, "%lld%n", n, &len);
adamc@666	2470 ctx->heap.front += len+1;
adamc@284	2471 return r;
adamc@284	2472 }
adamc@285	2473
adamc@311	2474 uw_Basis_string uw_Basis_floatToString(uw_context ctx, uw_Basis_float n) {
adamc@285	2475 int len;
adamc@285	2476 char *r;
adamc@285	2477
adamc@311	2478 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	2479 r = ctx->heap.front;
adamc@285	2480 sprintf(r, "%g%n", n, &len);
adamc@666	2481 ctx->heap.front += len+1;
adamc@285	2482 return r;
adamc@285	2483 }
adamc@285	2484
adamc@821	2485 uw_Basis_string uw_Basis_charToString(uw_context ctx, uw_Basis_char ch) {
adamc@821	2486 char *r = uw_malloc(ctx, 2);
adamc@821	2487 r[0] = ch;
adamc@821	2488 r[1] = 0;
adamc@821	2489 return r;
adamc@821	2490 }
adamc@821	2491
adamc@311	2492 uw_Basis_string uw_Basis_boolToString(uw_context ctx, uw_Basis_bool b) {
adamc@311	2493 if (b == uw_Basis_False)
adamc@285	2494 return "False";
adamc@285	2495 else
adamc@285	2496 return "True";
adamc@285	2497 }
adamc@288	2498
adamc@436	2499 uw_Basis_string uw_Basis_timeToString(uw_context ctx, uw_Basis_time t) {
adamc@436	2500 size_t len;
adamc@436	2501 char *r;
adamc@436	2502 struct tm stm;
adamc@436	2503
adamc@436	2504 if (localtime_r(&t, &stm)) {
adamc@436	2505 uw_check_heap(ctx, TIMES_MAX);
adamc@666	2506 r = ctx->heap.front;
adamc@436	2507 len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
adamc@666	2508 ctx->heap.front += len+1;
adamc@436	2509 return r;
adamc@436	2510 } else
adamc@436	2511 return "<Invalid time>";
adamc@436	2512 }
adamc@288	2513
adamc@311	2514 uw_Basis_int *uw_Basis_stringToInt(uw_context ctx, uw_Basis_string s) {
adamc@288	2515 char *endptr;
adamc@311	2516 uw_Basis_int n = strtoll(s, &endptr, 10);
adamc@288	2517
adamc@288	2518 if (s != '\0' && endptr == '\0') {
adamc@311	2519 uw_Basis_int *r = uw_malloc(ctx, sizeof(uw_Basis_int));
adamc@288	2520 *r = n;
adamc@288	2521 return r;
adamc@288	2522 } else
adamc@288	2523 return NULL;
adamc@288	2524 }
adamc@289	2525
adamc@311	2526 uw_Basis_float *uw_Basis_stringToFloat(uw_context ctx, uw_Basis_string s) {
adamc@289	2527 char *endptr;
adamc@311	2528 uw_Basis_float n = strtod(s, &endptr);
adamc@289	2529
adamc@289	2530 if (s != '\0' && endptr == '\0') {
adamc@311	2531 uw_Basis_float *r = uw_malloc(ctx, sizeof(uw_Basis_float));
adamc@289	2532 *r = n;
adamc@289	2533 return r;
adamc@289	2534 } else
adamc@289	2535 return NULL;
adamc@289	2536 }
adamc@289	2537
adamc@821	2538 uw_Basis_char *uw_Basis_stringToChar(uw_context ctx, uw_Basis_string s) {
adamc@821	2539 if (s[0] == 0) {
adamc@821	2540 uw_Basis_char *r = uw_malloc(ctx, 1);
adamc@821	2541 r[0] = 0;
adamc@821	2542 return r;
adamc@821	2543 } else if (s[1] != 0)
adamc@821	2544 return NULL;
adamc@821	2545 else {
adamc@821	2546 uw_Basis_char *r = uw_malloc(ctx, 1);
adamc@821	2547 r[0] = s[0];
adamc@821	2548 return r;
adamc@821	2549 }
adamc@821	2550 }
adamc@821	2551
adamc@311	2552 uw_Basis_bool *uw_Basis_stringToBool(uw_context ctx, uw_Basis_string s) {
adamc@311	2553 static uw_Basis_bool true = uw_Basis_True;
adamc@311	2554 static uw_Basis_bool false = uw_Basis_False;
adamc@289	2555
adamc@289	2556 if (!strcasecmp (s, "True"))
adamc@289	2557 return &true;
adamc@289	2558 else if (!strcasecmp (s, "False"))
adamc@289	2559 return &false;
adamc@289	2560 else
adamc@289	2561 return NULL;
adamc@289	2562 }
adamc@292	2563
adamc@436	2564 uw_Basis_time *uw_Basis_stringToTime(uw_context ctx, uw_Basis_string s) {
adamc@438	2565 char dot = strchr(s, '.'), end = strchr(s, 0);
adamc@436	2566 struct tm stm;
adamc@436	2567
adamc@439	2568 if (dot) {
adamc@439	2569 *dot = 0;
adamc@439	2570 if (strptime(s, TIME_FMT_PG, &stm) == end) {
adamc@439	2571 *dot = '.';
adamc@439	2572 uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
adamc@439	2573 *r = mktime(&stm);
adamc@439	2574 return r;
adamc@439	2575 }
adamc@439	2576 else {
adamc@439	2577 *dot = '.';
adamc@439	2578 return NULL;
adamc@439	2579 }
adamc@436	2580 }
adamc@439	2581 else {
adamc@439	2582 if (strptime(s, TIME_FMT_PG, &stm) == end) {
adamc@439	2583 uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
adamc@439	2584 *r = mktime(&stm);
adamc@439	2585 return r;
adamc@439	2586 }
adamc@439	2587 else if (strptime(s, TIME_FMT, &stm) == end) {
adamc@439	2588 uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
adamc@439	2589 *r = mktime(&stm);
adamc@439	2590 return r;
adamc@439	2591 }
adamc@439	2592 else
adamc@439	2593 return NULL;
adamc@439	2594 }
adamc@436	2595 }
adamc@436	2596
adamc@311	2597 uw_Basis_int uw_Basis_stringToInt_error(uw_context ctx, uw_Basis_string s) {
adamc@292	2598 char *endptr;
adamc@311	2599 uw_Basis_int n = strtoll(s, &endptr, 10);
adamc@292	2600
adamc@292	2601 if (s != '\0' && endptr == '\0')
adamc@292	2602 return n;
adamc@292	2603 else
adamc@311	2604 uw_error(ctx, FATAL, "Can't parse int: %s", s);
adamc@292	2605 }
adamc@293	2606
adamc@682	2607 #include <errno.h>
adamc@682	2608
adamc@678	2609 uw_Basis_channel uw_Basis_stringToChannel_error(uw_context ctx, uw_Basis_string s) {
adamc@682	2610 unsigned long long n;
adamc@682	2611
adamc@682	2612 if (sscanf(s, "%llu", &n) < 1)
adamc@682	2613 uw_error(ctx, FATAL, "Can't parse channel: %s", s);
adamc@682	2614 else {
adamc@682	2615 uw_Basis_channel ch = {n >> 32, n & ((1ull << 32) - 1)};
adamc@682	2616 return ch;
adamc@682	2617 }
adamc@682	2618 }
adamc@682	2619
adamc@682	2620 uw_Basis_client uw_Basis_stringToClient_error(uw_context ctx, uw_Basis_string s) {
adamc@678	2621 char *endptr;
adamc@682	2622 unsigned long n = strtoul(s, &endptr, 10);
adamc@678	2623
adamc@678	2624 if (s != '\0' && endptr == '\0')
adamc@678	2625 return n;
adamc@678	2626 else
adamc@682	2627 uw_error(ctx, FATAL, "Can't parse client: %s", s);
adamc@678	2628 }
adamc@678	2629
adamc@311	2630 uw_Basis_float uw_Basis_stringToFloat_error(uw_context ctx, uw_Basis_string s) {
adamc@293	2631 char *endptr;
adamc@311	2632 uw_Basis_float n = strtod(s, &endptr);
adamc@293	2633
adamc@293	2634 if (s != '\0' && endptr == '\0')
adamc@293	2635 return n;
adamc@293	2636 else
adamc@311	2637 uw_error(ctx, FATAL, "Can't parse float: %s", s);
adamc@293	2638 }
adamc@293	2639
adamc@821	2640 uw_Basis_char uw_Basis_stringToChar_error(uw_context ctx, uw_Basis_string s) {
adamc@821	2641 if (s[0] == 0)
adamc@821	2642 return 0;
adamc@821	2643 else if (s[1] != 0)
adamc@821	2644 uw_error(ctx, FATAL, "Can't parse char: %s", s);
adamc@821	2645 else
adamc@821	2646 return s[0];
adamc@821	2647 }
adamc@821	2648
adamc@311	2649 uw_Basis_bool uw_Basis_stringToBool_error(uw_context ctx, uw_Basis_string s) {
adamc@296	2650 if (!strcasecmp(s, "T") \|\| !strcasecmp (s, "True"))
adamc@311	2651 return uw_Basis_True;
adamc@296	2652 else if (!strcasecmp(s, "F") \|\| !strcasecmp (s, "False"))
adamc@311	2653 return uw_Basis_False;
adamc@293	2654 else
adamc@311	2655 uw_error(ctx, FATAL, "Can't parse bool: %s", s);
adamc@293	2656 }
adamc@436	2657
adamc@436	2658 uw_Basis_time uw_Basis_stringToTime_error(uw_context ctx, uw_Basis_string s) {
adamc@438	2659 char dot = strchr(s, '.'), end = strchr(s, 0);
adamc@436	2660 struct tm stm = {};
adamc@436	2661
adamc@438	2662 if (dot) {
adamc@438	2663 *dot = 0;
adamc@438	2664 if (strptime(s, TIME_FMT_PG, &stm)) {
adamc@438	2665 *dot = '.';
adamc@438	2666 return mktime(&stm);
adamc@438	2667 }
adamc@438	2668 else {
adamc@438	2669 *dot = '.';
adamc@438	2670 uw_error(ctx, FATAL, "Can't parse time: %s", s);
adamc@438	2671 }
adamc@438	2672 }
adamc@438	2673 else {
adamc@439	2674 if (strptime(s, TIME_FMT_PG, &stm) == end)
adamc@439	2675 return mktime(&stm);
adamc@439	2676 else if (strptime(s, TIME_FMT, &stm) == end)
adamc@438	2677 return mktime(&stm);
adamc@438	2678 else
adamc@438	2679 uw_error(ctx, FATAL, "Can't parse time: %s", s);
adamc@438	2680 }
adamc@436	2681 }
adamc@457	2682
adamc@939	2683 uw_Basis_time uw_Basis_unsqlTime(uw_context ctx, uw_Basis_string s) {
adamc@939	2684 char dot = strchr(s, '.'), end = strchr(s, 0);
adamc@939	2685 struct tm stm = {};
adamc@939	2686
adamc@939	2687 if (dot) {
adamc@939	2688 *dot = 0;
adamc@939	2689 if (strptime(s, TIME_FMT_PG, &stm)) {
adamc@939	2690 *dot = '.';
adamc@939	2691 return mktime(&stm);
adamc@939	2692 }
adamc@939	2693 else {
adamc@939	2694 *dot = '.';
adamc@939	2695 uw_error(ctx, FATAL, "Can't parse time: %s", s);
adamc@939	2696 }
adamc@939	2697 }
adamc@939	2698 else {
adamc@939	2699 if (strptime(s, TIME_FMT_PG, &stm) == end) {
adamc@939	2700 return mktime(&stm);
adamc@939	2701 } else if (strptime(s, TIME_FMT, &stm) == end) {
adamc@939	2702 return mktime(&stm);
adamc@939	2703 } else
adamc@939	2704 uw_error(ctx, FATAL, "Can't parse time: %s", s);
adamc@939	2705 }
adamc@939	2706 }
adamc@939	2707
adamc@742	2708 uw_Basis_blob uw_Basis_stringToBlob_error(uw_context ctx, uw_Basis_string s, size_t len) {
adamc@742	2709 char *r = ctx->heap.front;
adamc@742	2710 uw_Basis_blob b = {len, r};
adamc@742	2711
adamc@742	2712 uw_check_heap(ctx, len);
adamc@742	2713
adamc@742	2714 while (*s) {
adamc@742	2715 if (s[0] == '\\') {
adamc@742	2716 if (s[1] == '\\') {
adamc@742	2717 *r++ = '\\';
adamc@742	2718 s += 2;
adamc@742	2719 } else if (isdigit(s[1]) && isdigit(s[2]) && isdigit(s[3])) {
adamc@742	2720 r++ = (s[1] - '0') 8 * 8 + ((s[2] - '0') * 8) + (s[3] - '0');
adamc@742	2721 s += 4;
adamc@742	2722 }
adamc@742	2723 else {
adamc@742	2724 *r++ = '\\';
adamc@742	2725 ++s;
adamc@742	2726 }
adamc@742	2727 } else {
adamc@742	2728 *r++ = s[0];
adamc@742	2729 ++s;
adamc@742	2730 }
adamc@742	2731 }
adamc@742	2732
adamc@742	2733 b.size = r - ctx->heap.front;
adamc@742	2734 ctx->heap.front = r;
adamc@742	2735 return b;
adamc@742	2736 }
adamc@742	2737
adamc@1052	2738 #define THE_PAST "expires=Mon, 01-01-1970 00:00:00 GMT"
adamc@1052	2739
adamc@463	2740 uw_Basis_string uw_Basis_get_cookie(uw_context ctx, uw_Basis_string c) {
adamc@463	2741 int len = strlen(c);
adamc@854	2742 char *p = ctx->outHeaders.start;
adamc@474	2743
adamc@474	2744 while (p = strstr(p, "\nSet-Cookie: ")) {
adamc@474	2745 char *p2;
adamc@474	2746 p += 13;
adamc@474	2747 p2 = strchr(p, '=');
adamc@474	2748
adamc@474	2749 if (p2) {
adamc@474	2750 size_t sz = strcspn(p2+1, ";\r\n");
adamc@474	2751
adamc@474	2752 if (!strncasecmp(p, c, p2 - p)) {
adamc@1052	2753 if (sz == 0 && strstr(p2+2, THE_PAST))
adamc@1052	2754 return NULL;
adamc@1052	2755 else {
adamc@1052	2756 char *ret = uw_malloc(ctx, sz + 1);
adamc@1052	2757 memcpy(ret, p2+1, sz);
adamc@1052	2758 ret[sz] = 0;
adamc@1052	2759 return ret;
adamc@1052	2760 }
adamc@474	2761 }
adamc@474	2762 }
adamc@474	2763 }
adamc@463	2764
adamc@854	2765 if (p = uw_Basis_requestHeader(ctx, "Cookie")) {
adamc@1051	2766 char *p2;
adamc@1051	2767
adamc@854	2768 while (1) {
adamc@1051	2769 if (!strncmp(p, c, len) && p[len] == '=') {
adamc@1051	2770 if (p2 = strchr(p, ';')) {
adamc@1051	2771 size_t n = p2 - (p + len);
adamc@1051	2772 char *r = uw_malloc(ctx, n);
adamc@1051	2773 memcpy(r, p + 1 + len, n-1);
adamc@1051	2774 r[n-1] = 0;
adamc@1051	2775 return r;
adamc@1051	2776 } else
adamc@1051	2777 return p + 1 + len;
adamc@1051	2778 } else if (p = strchr(p, ';'))
adamc@854	2779 p += 2;
adamc@463	2780 else
adamc@463	2781 return NULL;
adamc@463	2782 }
adamc@463	2783 }
adamc@792	2784
adamc@792	2785 return NULL;
adamc@457	2786 }
adamc@462	2787
adamc@1050	2788 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	2789 uw_write_header(ctx, "Set-Cookie: ");
adamc@462	2790 uw_write_header(ctx, c);
adamc@462	2791 uw_write_header(ctx, "=");
adamc@462	2792 uw_write_header(ctx, v);
adamc@466	2793 uw_write_header(ctx, "; path=");
adamc@466	2794 uw_write_header(ctx, prefix);
adamc@1050	2795 if (expires) {
adamc@1050	2796 char formatted[30];
adamc@1050	2797 struct tm tm;
adamc@1050	2798
adamc@1050	2799 gmtime_r(expires, &tm);
adamc@1050	2800
adamc@1050	2801 strftime(formatted, sizeof formatted, "%a, %d-%b-%Y %T GMT", &tm);
adamc@1050	2802
adamc@1050	2803 uw_write_header(ctx, "; expires=");
adamc@1050	2804 uw_write_header(ctx, formatted);
adamc@1050	2805 }
adamc@1050	2806 if (secure)
adamc@1050	2807 uw_write_header(ctx, "; secure");
adamc@462	2808 uw_write_header(ctx, "\r\n");
adamc@462	2809
adamc@462	2810 return uw_unit_v;
adamc@462	2811 }
adamc@667	2812
adamc@1050	2813 uw_unit uw_Basis_clear_cookie(uw_context ctx, uw_Basis_string prefix, uw_Basis_string c) {
adamc@1050	2814 uw_write_header(ctx, "Set-Cookie: ");
adamc@1050	2815 uw_write_header(ctx, c);
adamc@1050	2816 uw_write_header(ctx, "=; path=");
adamc@1050	2817 uw_write_header(ctx, prefix);
adamc@1052	2818 uw_write_header(ctx, "; " THE_PAST "\r\n");
adamc@1050	2819
adamc@1050	2820 return uw_unit_v;
adamc@1050	2821 }
adamc@1050	2822
adamc@1113	2823 size_t uw_deltas_max = SIZE_MAX;
adamc@1113	2824
adamc@682	2825 static delta *allocate_delta(uw_context ctx, unsigned client) {
adamc@682	2826 unsigned i;
adamc@682	2827 delta *d;
adamc@671	2828
adamc@682	2829 for (i = 0; i < ctx->used_deltas; ++i)
adamc@682	2830 if (ctx->deltas[i].client == client)
adamc@682	2831 return &ctx->deltas[i];
adamc@671	2832
adamc@682	2833 if (ctx->used_deltas >= ctx->n_deltas) {
adamc@1113	2834 if (ctx->n_deltas + 1 > uw_deltas_max)
adamc@1113	2835 uw_error(ctx, FATAL, "Exceeded limit on number of deltas");
adamc@1113	2836
adamc@682	2837 ctx->deltas = realloc(ctx->deltas, sizeof(delta) * ++ctx->n_deltas);
adamc@1113	2838 buf_init(uw_messages_max, &ctx->deltas[ctx->n_deltas-1].msgs, 0);
adamc@682	2839 }
adamc@671	2840
adamc@682	2841 d = &ctx->deltas[ctx->used_deltas++];
adamc@682	2842 d->client = client;
adamc@682	2843 buf_reset(&d->msgs);
adamc@682	2844 return d;
adamc@671	2845 }
adamc@671	2846
adamc@668	2847 uw_Basis_channel uw_Basis_new_channel(uw_context ctx, uw_unit u) {
adamc@682	2848 if (ctx->client == NULL)
adamc@682	2849 uw_error(ctx, FATAL, "Attempt to create channel on request not associated with a persistent connection");
adamc@671	2850
adamc@682	2851 return new_channel(ctx->client);
adamc@668	2852 }
adamc@668	2853
adamc@668	2854 uw_unit uw_Basis_send(uw_context ctx, uw_Basis_channel chn, uw_Basis_string msg) {
adamc@682	2855 delta *d = allocate_delta(ctx, chn.cli);
adamc@682	2856 size_t len;
adamc@682	2857 int preLen;
adamc@682	2858 char pre[INTS_MAX + 2];
adamc@668	2859
adamc@682	2860 len = strlen(msg);
adamc@682	2861
adamc@682	2862 sprintf(pre, "%u\n%n", chn.chn, &preLen);
adamc@682	2863
adamc@1113	2864 ctx_buf_append(ctx, "messages", &d->msgs, pre, preLen);
adamc@1113	2865 ctx_buf_append(ctx, "messages", &d->msgs, msg, len);
adamc@1113	2866 ctx_buf_append(ctx, "messages", &d->msgs, "\n", 1);
adamc@671	2867
adamc@671	2868 return uw_unit_v;
adamc@668	2869 }
adamc@671	2870
adamc@671	2871 void uw_commit(uw_context ctx) {
adamc@1104	2872 int i;
adamc@1104	2873
adamc@1104	2874 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@771	2875 if (ctx->transactionals[i].rollback != NULL)
adamc@1083	2876 if (ctx->transactionals[i].commit)
adamc@1083	2877 ctx->transactionals[i].commit(ctx->transactionals[i].data);
adamc@771	2878
adamc@1104	2879 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@771	2880 if (ctx->transactionals[i].rollback == NULL)
adamc@1083	2881 if (ctx->transactionals[i].commit)
adamc@1083	2882 ctx->transactionals[i].commit(ctx->transactionals[i].data);
adamc@771	2883
adamc@1094	2884 if (ctx->app->db_commit(ctx))
adamc@671	2885 uw_error(ctx, FATAL, "Error running SQL COMMIT");
adamc@682	2886
adamc@682	2887 for (i = 0; i < ctx->used_deltas; ++i) {
adamc@682	2888 delta *d = &ctx->deltas[i];
adamc@682	2889 client *c = find_client(d->client);
adamc@682	2890
adamc@682	2891 assert (c != NULL && c->mode == USED);
adamc@682	2892
adamc@685	2893 client_send(c, &d->msgs);
adamc@682	2894 }
adamc@682	2895
adamc@682	2896 if (ctx->client)
adamc@685	2897 release_client(ctx->client);
adamc@771	2898
adamc@1104	2899 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@1083	2900 if (ctx->transactionals[i].free)
adamc@1083	2901 ctx->transactionals[i].free(ctx->transactionals[i].data);
adamc@916	2902
adamc@916	2903 // Splice script data into appropriate part of page
adamc@1065	2904 if (ctx->returning_indirectly \|\| ctx->script_header[0] == 0) {
adamc@995	2905 char *start = strstr(ctx->page.start, "<sc>");
adamc@995	2906 if (start) {
adamc@995	2907 memmove(start, start + 4, buf_used(&ctx->page) - (start - ctx->page.start) - 4);
adamc@995	2908 ctx->page.front -= 4;
adamc@995	2909 }
adamc@995	2910 } else if (buf_used(&ctx->script) == 0) {
adamc@916	2911 size_t len = strlen(ctx->script_header);
adamc@916	2912 char *start = strstr(ctx->page.start, "<sc>");
adamc@916	2913 if (start) {
adamc@1113	2914 ctx_buf_check(ctx, "page", &ctx->page, buf_used(&ctx->page) - 4 + len);
adamc@917	2915 start = strstr(ctx->page.start, "<sc>");
adamc@916	2916 memmove(start + len, start + 4, buf_used(&ctx->page) - (start - ctx->page.start) - 3);
adamc@916	2917 ctx->page.front += len - 4;
adamc@916	2918 memcpy(start, ctx->script_header, len);
adamc@916	2919 }
adamc@916	2920 } else {
adamc@916	2921 size_t lenH = strlen(ctx->script_header), len = buf_used(&ctx->script);
adamc@916	2922 size_t lenP = lenH + 40 + len;
adamc@916	2923 char *start = strstr(ctx->page.start, "<sc>");
adamc@916	2924 if (start) {
adamc@1113	2925 ctx_buf_check(ctx, "page", &ctx->page, buf_used(&ctx->page) - 4 + lenP);
adamc@917	2926 start = strstr(ctx->page.start, "<sc>");
adamc@916	2927 memmove(start + lenP, start + 4, buf_used(&ctx->page) - (start - ctx->page.start) - 3);
adamc@916	2928 ctx->page.front += lenP - 4;
adamc@916	2929 memcpy(start, ctx->script_header, lenH);
adamc@916	2930 memcpy(start + lenH, "<script type=\"text/javascript\">", 31);
adamc@916	2931 memcpy(start + lenH + 31, ctx->script.start, len);
adamc@916	2932 memcpy(start + lenH + 31 + len, "</script>", 9);
adamc@916	2933 }
adamc@916	2934 }
adamc@671	2935 }
adamc@671	2936
adamc@671	2937 int uw_rollback(uw_context ctx) {
adamc@1104	2938 int i;
adamc@885	2939 cleanup *cl;
adamc@771	2940
adamc@682	2941 if (ctx->client)
adamc@685	2942 release_client(ctx->client);
adamc@671	2943
adamc@885	2944 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adamc@885	2945 cl->func(cl->arg);
adamc@885	2946
adamc@885	2947 ctx->cleanup_front = ctx->cleanup;
adamc@885	2948
adamc@1104	2949 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@771	2950 if (ctx->transactionals[i].rollback != NULL)
adamc@771	2951 ctx->transactionals[i].rollback(ctx->transactionals[i].data);
adamc@771	2952
adamc@1104	2953 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@1084	2954 if (ctx->transactionals[i].free)
adamc@1084	2955 ctx->transactionals[i].free(ctx->transactionals[i].data);
adamc@771	2956
adamc@1094	2957 return ctx->app->db_rollback(ctx);
adamc@671	2958 }
adamc@683	2959
adamc@1113	2960 size_t uw_transactionals_max = SIZE_MAX;
adamc@1113	2961
adamc@771	2962 void uw_register_transactional(uw_context ctx, void *data, uw_callback commit, uw_callback rollback,
adamc@771	2963 uw_callback free) {
adamc@771	2964 if (ctx->used_transactionals >= ctx->n_transactionals) {
adamc@1113	2965 if (ctx->used_transactionals+1 > uw_transactionals_max)
adamc@1113	2966 uw_error(ctx, FATAL, "Exceeded limit on number of transactionals");
adamc@1084	2967 ctx->transactionals = realloc(ctx->transactionals, sizeof(transactional) * (ctx->used_transactionals+1));
adamc@771	2968 ++ctx->n_transactionals;
adamc@771	2969 }
adamc@771	2970
adamc@771	2971 ctx->transactionals[ctx->used_transactionals].data = data;
adamc@771	2972 ctx->transactionals[ctx->used_transactionals].commit = commit;
adamc@771	2973 ctx->transactionals[ctx->used_transactionals].rollback = rollback;
adamc@771	2974 ctx->transactionals[ctx->used_transactionals++].free = free;
adamc@771	2975 }
adamc@771	2976
adamc@683	2977
adamc@683	2978 // "Garbage collection"
adamc@683	2979
adamc@683	2980 static failure_kind uw_expunge(uw_context ctx, uw_Basis_client cli) {
adamc@683	2981 int r = setjmp(ctx->jmp_buf);
adamc@683	2982
adamc@684	2983 if (r == 0) {
adamc@1094	2984 if (ctx->app->db_begin(ctx))
adamc@684	2985 uw_error(ctx, FATAL, "Error running SQL BEGIN");
adamc@1094	2986 ctx->app->expunger(ctx, cli);
adamc@1094	2987 if (ctx->app->db_commit(ctx))
adamc@684	2988 uw_error(ctx, FATAL, "Error running SQL COMMIT");
adamc@684	2989 }
adamc@683	2990
adamc@683	2991 return r;
adamc@683	2992 }
adamc@683	2993
adamc@683	2994 void uw_prune_clients(uw_context ctx) {
adamc@683	2995 client c, next, *prev = NULL;
adamc@683	2996 time_t cutoff;
adamc@683	2997
adamc@1094	2998 cutoff = time(NULL) - ctx->app->timeout;
adamc@683	2999
adamc@683	3000 pthread_mutex_lock(&clients_mutex);
adamc@683	3001
adamc@683	3002 for (c = clients_used; c; c = next) {
adamc@683	3003 next = c->next;
adamc@683	3004 pthread_mutex_lock(&c->lock);
adamc@685	3005 if (c->last_contact < cutoff && c->refcount == 0) {
adamc@683	3006 failure_kind fk = UNLIMITED_RETRY;
adamc@683	3007 if (prev)
adamc@683	3008 prev->next = next;
adamc@683	3009 else
adamc@683	3010 clients_used = next;
adamc@684	3011 uw_reset(ctx);
adamc@683	3012 while (fk == UNLIMITED_RETRY) {
adamc@683	3013 fk = uw_expunge(ctx, c->id);
adamc@684	3014 if (fk == UNLIMITED_RETRY) {
adamc@1094	3015 ctx->app->db_rollback(ctx);
adamc@684	3016 printf("Unlimited retry during expunge: %s\n", uw_error_message(ctx));
adamc@683	3017 }
adamc@683	3018 }
adamc@684	3019 if (fk == SUCCESS)
adamc@684	3020 free_client(c);
adamc@684	3021 else {
adamc@1094	3022 ctx->app->db_rollback(ctx);
adamc@856	3023 fprintf(stderr, "Expunge blocked by error: %s\n", uw_error_message(ctx));
adamc@684	3024 }
adamc@683	3025 }
adamc@683	3026 else
adamc@683	3027 prev = c;
adamc@683	3028 pthread_mutex_unlock(&c->lock);
adamc@683	3029 }
adamc@683	3030
adamc@683	3031 pthread_mutex_unlock(&clients_mutex);
adamc@683	3032 }
adamc@687	3033
adamc@687	3034 failure_kind uw_initialize(uw_context ctx) {
adamc@687	3035 int r = setjmp(ctx->jmp_buf);
adamc@687	3036
adamc@687	3037 if (r == 0) {
adamc@1094	3038 if (ctx->app->db_begin(ctx))
adamc@687	3039 uw_error(ctx, FATAL, "Error running SQL BEGIN");
adamc@1094	3040 ctx->app->initializer(ctx);
adamc@1094	3041 if (ctx->app->db_commit(ctx))
adamc@687	3042 uw_error(ctx, FATAL, "Error running SQL COMMIT");
adamc@687	3043 }
adamc@687	3044
adamc@687	3045 return r;
adamc@687	3046 }
adamc@717	3047
adamc@1065	3048 static int url_bad(uw_Basis_string s) {
adamc@1065	3049 for (; *s; ++s)
adamc@1065	3050 if (!isgraph(*s))
adamc@1065	3051 return 1;
adamc@1065	3052
adamc@1065	3053 return 0;
adamc@1065	3054 }
adamc@1065	3055
adamc@717	3056 uw_Basis_string uw_Basis_bless(uw_context ctx, uw_Basis_string s) {
adamc@1065	3057 if (url_bad(s))
adamc@1065	3058 uw_error(ctx, FATAL, "Invalid URL %s", uw_Basis_htmlifyString(ctx, s));
adamc@1094	3059 if (ctx->app->check_url(s))
adamc@770	3060 return s;
adamc@770	3061 else
adamc@770	3062 uw_error(ctx, FATAL, "Disallowed URL %s", uw_Basis_htmlifyString(ctx, s));
adamc@717	3063 }
adamc@734	3064
adamc@770	3065 uw_Basis_string uw_Basis_checkUrl(uw_context ctx, uw_Basis_string s) {
adamc@1065	3066 if (url_bad(s))
adamc@1065	3067 return NULL;
adamc@1094	3068 if (ctx->app->check_url(s))
adamc@770	3069 return s;
adamc@770	3070 else
adamc@770	3071 return NULL;
adamc@770	3072 }
adamc@770	3073
adamc@770	3074 int mime_format(const char *s) {
adamc@770	3075 for (; *s; ++s)
adamc@770	3076 if (!isalnum(s) && s != '/' && s != '-' && s != '.')
adamc@770	3077 return 0;
adamc@770	3078
adamc@770	3079 return 1;
adamc@770	3080 }
adamc@770	3081
adamc@741	3082 uw_Basis_string uw_Basis_blessMime(uw_context ctx, uw_Basis_string s) {
adamc@770	3083 if (!mime_format(s))
adamc@770	3084 uw_error(ctx, FATAL, "MIME type \"%s\" contains invalid character", uw_Basis_htmlifyString(ctx, s));
adamc@770	3085
adamc@1094	3086 if (ctx->app->check_mime(s))
adamc@770	3087 return s;
adamc@770	3088 else
adamc@770	3089 uw_error(ctx, FATAL, "Disallowed MIME type %s", uw_Basis_htmlifyString(ctx, s));
adamc@770	3090 }
adamc@770	3091
adamc@770	3092 uw_Basis_string uw_Basis_checkMime(uw_context ctx, uw_Basis_string s) {
adamc@770	3093 if (!mime_format(s))
adamc@770	3094 return NULL;
adamc@770	3095
adamc@1094	3096 if (ctx->app->check_mime(s))
adamc@770	3097 return s;
adamc@770	3098 else
adamc@770	3099 return NULL;
adamc@741	3100 }
adamc@741	3101
adamc@734	3102 uw_Basis_string uw_unnull(uw_Basis_string s) {
adamc@734	3103 return s ? s : "";
adamc@734	3104 }
adamc@734	3105
adamc@734	3106 extern int uw_hash_blocksize;
adamc@734	3107
adamc@734	3108 uw_Basis_string uw_Basis_makeSigString(uw_context ctx, uw_Basis_string sig) {
adamc@734	3109 uw_Basis_string r = uw_malloc(ctx, 2 * uw_hash_blocksize + 1);
adamc@734	3110 int i;
adamc@734	3111
adamc@734	3112 for (i = 0; i < uw_hash_blocksize; ++i)
adamc@734	3113 sprintf(&r[2i], "%.02X", ((unsigned char )sig)[i]);
adamc@734	3114
adamc@734	3115 return r;
adamc@734	3116 }
adamc@734	3117
adamc@734	3118 uw_Basis_string uw_Basis_sigString(uw_context ctx, uw_unit u) {
adamc@1094	3119 return ctx->app->cookie_sig(ctx);
adamc@734	3120 }
adamc@737	3121
adamc@737	3122 uw_Basis_string uw_Basis_fileName(uw_context ctx, uw_Basis_file f) {
adamc@737	3123 return f.name;
adamc@737	3124 }
adamc@737	3125
adamc@740	3126 uw_Basis_string uw_Basis_fileMimeType(uw_context ctx, uw_Basis_file f) {
adamc@740	3127 return f.type;
adamc@740	3128 }
adamc@740	3129
adamc@745	3130 uw_Basis_int uw_Basis_blobSize(uw_context ctx, uw_Basis_blob b) {
adamc@745	3131 return b.size;
adamc@745	3132 }
adamc@745	3133
adamc@737	3134 uw_Basis_blob uw_Basis_fileData(uw_context ctx, uw_Basis_file f) {
adamc@737	3135 return f.data;
adamc@737	3136 }
adamc@741	3137
adamc@741	3138 __attribute__((noreturn)) void uw_return_blob(uw_context ctx, uw_Basis_blob b, uw_Basis_string mimeType) {
adamc@741	3139 cleanup *cl;
adamc@741	3140 int len;
adamc@741	3141
adamc@1065	3142 ctx->returning_indirectly = 1;
adamc@741	3143 buf_reset(&ctx->outHeaders);
adamc@741	3144 buf_reset(&ctx->page);
adamc@741	3145
adamc@856	3146 uw_write_header(ctx, on_success);
adamc@856	3147 uw_write_header(ctx, "Content-Type: ");
adamc@741	3148 uw_write_header(ctx, mimeType);
adamc@741	3149 uw_write_header(ctx, "\r\nContent-Length: ");
adamc@1113	3150 ctx_buf_check(ctx, "headers", &ctx->outHeaders, INTS_MAX);
adamc@741	3151 sprintf(ctx->outHeaders.front, "%d%n", b.size, &len);
adamc@741	3152 ctx->outHeaders.front += len;
adamc@1066	3153 uw_write_header(ctx, "\r\n");
adamc@741	3154
adamc@1113	3155 ctx_buf_append(ctx, "page", &ctx->page, b.data, b.size);
adamc@741	3156
adamc@741	3157 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adamc@741	3158 cl->func(cl->arg);
adamc@741	3159
adamc@741	3160 ctx->cleanup_front = ctx->cleanup;
adamc@741	3161
adamc@1065	3162 longjmp(ctx->jmp_buf, RETURN_INDIRECTLY);
adamc@1065	3163 }
adamc@1065	3164
adamc@1065	3165 __attribute__((noreturn)) void uw_redirect(uw_context ctx, uw_Basis_string url) {
adamc@1065	3166 cleanup *cl;
adamc@1065	3167 int len;
adamc@1066	3168 char *s;
adamc@1065	3169
adamc@1065	3170 ctx->returning_indirectly = 1;
adamc@1066	3171 buf_reset(&ctx->page);
adamc@1113	3172 ctx_buf_check(ctx, "page", &ctx->page, buf_used(&ctx->outHeaders)+1);
adamc@1066	3173 memcpy(ctx->page.start, ctx->outHeaders.start, buf_used(&ctx->outHeaders));
adamc@1066	3174 ctx->page.start[buf_used(&ctx->outHeaders)] = 0;
adamc@1065	3175 buf_reset(&ctx->outHeaders);
adamc@1065	3176
adamc@1065	3177 uw_write_header(ctx, on_redirect);
adamc@1066	3178
adamc@1066	3179 s = strchr(ctx->page.start, '\n');
adamc@1066	3180 if (s) {
adamc@1066	3181 char *s2;
adamc@1066	3182 for (++s; s2 = strchr(s, '\n'); s = s2+1) {
adamc@1066	3183 *s2 = 0;
adamc@1066	3184 if (!strncmp(s, "Set-Cookie: ", 12)) {
adamc@1066	3185 uw_write_header(ctx, s);
adamc@1066	3186 uw_write_header(ctx, "\n");
adamc@1066	3187 }
adamc@1066	3188 }
adamc@1066	3189 }
adamc@1066	3190
adamc@1065	3191 uw_write_header(ctx, "Location: ");
adamc@1065	3192 uw_write_header(ctx, url);
adamc@1065	3193 uw_write_header(ctx, "\r\n\r\n");
adamc@1065	3194
adamc@1065	3195 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adamc@1065	3196 cl->func(cl->arg);
adamc@1065	3197
adamc@1065	3198 ctx->cleanup_front = ctx->cleanup;
adamc@1065	3199
adamc@1065	3200 longjmp(ctx->jmp_buf, RETURN_INDIRECTLY);
adamc@741	3201 }
adamc@874	3202
adamc@874	3203 uw_Basis_string uw_Basis_unAs(uw_context ctx, uw_Basis_string s) {
adamc@874	3204 uw_Basis_string r = uw_malloc(ctx, strlen(s) + 1);
adamc@874	3205
adamc@874	3206 for (; *s; ++s) {
adamc@874	3207 if (s[0] == '\'') {
adamc@874	3208 *r++ = '\'';
adamc@874	3209 for (++s; *s; ++s) {
adamc@874	3210 if (s[0] == '\'') {
adamc@874	3211 *r++ = '\'';
adamc@874	3212 break;
adamc@874	3213 } else if (s[0] == '\\') {
adamc@874	3214 if (s[1] == '\\') {
adamc@874	3215 *r++ = '\\';
adamc@874	3216 *r++ = '\\';
adamc@874	3217 ++s;
adamc@874	3218 } else if (s[1] == '\'') {
adamc@874	3219 *r++ = '\\';
adamc@874	3220 *r++ = '\'';
adamc@874	3221 ++s;
adamc@874	3222 } else
adamc@874	3223 *r++ = '\'';
adamc@874	3224 } else
adamc@874	3225 *r++ = s[0];
adamc@874	3226 }
adamc@874	3227 if (*s == 0) break;
adamc@874	3228 } else if (s[0] == 'T' && s[1] == '.')
adamc@874	3229 ++s;
adamc@874	3230 else
adamc@874	3231 *r++ = s[0];
adamc@874	3232 }
adamc@874	3233
adamc@874	3234 return r;
adamc@874	3235 }
adamc@874	3236
adamc@922	3237 uw_Basis_string uw_Basis_mstrcat(uw_context ctx, ...) {
adamc@922	3238 va_list ap;
adamc@922	3239 size_t len = 1;
adamc@922	3240 char s, r, *s2;
adamc@922	3241
adamc@922	3242 va_start(ap, ctx);
adamc@922	3243 for (s = va_arg(ap, char); s; s = va_arg(ap, char))
adamc@922	3244 len += strlen(s);
adamc@922	3245 va_end(ap);
adamc@922	3246
adamc@922	3247 r = uw_malloc(ctx, len);
adamc@922	3248 va_start(ap, ctx);
adamc@922	3249 for (s2 = r, s = va_arg(ap, char); s; s = va_arg(ap, char))
adamc@922	3250 while (*s)
adamc@922	3251 s2++ = s++;
adamc@922	3252 va_end(ap);
adamc@922	3253 *s2 = 0;
adamc@922	3254
adamc@922	3255 return r;
adamc@922	3256 }
adamc@1006	3257
adamc@1050	3258 const uw_Basis_time minTime = 0;
adamc@1050	3259
adamc@1006	3260 uw_Basis_time uw_Basis_now(uw_context ctx) {
adamc@1006	3261 return time(NULL);
adamc@1006	3262 }
adamc@1061	3263
adamc@1061	3264 void uw_get_global(uw_context ctx, char name) {
adamc@1061	3265 int i;
adamc@1061	3266
adamc@1061	3267 for (i = 0; i < ctx->n_globals; ++i)
adamc@1061	3268 if (!strcmp(name, ctx->globals[i].name))
adamc@1061	3269 return ctx->globals[i].data;
adamc@1061	3270
adamc@1061	3271 return NULL;
adamc@1061	3272 }
adamc@1061	3273
adamc@1113	3274 size_t uw_globals_max = SIZE_MAX;
adamc@1113	3275
adamc@1061	3276 void uw_set_global(uw_context ctx, char name, void data, void (free)(void)) {
adamc@1061	3277 int i;
adamc@1061	3278
adamc@1061	3279 for (i = 0; i < ctx->n_globals; ++i)
adamc@1061	3280 if (!strcmp(name, ctx->globals[i].name)) {
adamc@1089	3281 if (ctx->globals[i].free)
adamc@1061	3282 ctx->globals[i].free(ctx->globals[i].data);
adamc@1061	3283 ctx->globals[i].data = data;
adamc@1061	3284 ctx->globals[i].free = free;
adamc@1061	3285 return;
adamc@1061	3286 }
adamc@1089	3287
adamc@1113	3288 if (ctx->n_globals+1 > uw_globals_max)
adamc@1113	3289 uw_error(ctx, FATAL, "Exceeded limit on number of globals");
adamc@1113	3290
adamc@1061	3291 ++ctx->n_globals;
adamc@1061	3292 ctx->globals = realloc(ctx->globals, ctx->n_globals * sizeof(global));
adamc@1061	3293 ctx->globals[ctx->n_globals-1].name = name;
adamc@1061	3294 ctx->globals[ctx->n_globals-1].data = data;
adamc@1061	3295 ctx->globals[ctx->n_globals-1].free = free;
adamc@1061	3296 }
adamc@1061	3297
adamc@1061	3298 uw_Basis_bool uw_Basis_isalnum(uw_context ctx, uw_Basis_char c) {
adamc@1063	3299 return !!isalnum(c);
adamc@1061	3300 }
adamc@1061	3301
adamc@1061	3302 uw_Basis_bool uw_Basis_isalpha(uw_context ctx, uw_Basis_char c) {
adamc@1063	3303 return !!isalpha(c);
adamc@1061	3304 }
adamc@1061	3305
adamc@1061	3306 uw_Basis_bool uw_Basis_isblank(uw_context ctx, uw_Basis_char c) {
adamc@1063	3307 return !!isblank(c);
adamc@1061	3308 }
adamc@1061	3309
adamc@1061	3310 uw_Basis_bool uw_Basis_iscntrl(uw_context ctx, uw_Basis_char c) {
adamc@1063	3311 return !!iscntrl(c);
adamc@1061	3312 }
adamc@1061	3313
adamc@1061	3314 uw_Basis_bool uw_Basis_isdigit(uw_context ctx, uw_Basis_char c) {
adamc@1063	3315 return !!isdigit(c);
adamc@1061	3316 }
adamc@1061	3317
adamc@1061	3318 uw_Basis_bool uw_Basis_isgraph(uw_context ctx, uw_Basis_char c) {
adamc@1063	3319 return !!isgraph(c);
adamc@1061	3320 }
adamc@1061	3321
adamc@1061	3322 uw_Basis_bool uw_Basis_islower(uw_context ctx, uw_Basis_char c) {
adamc@1063	3323 return !!islower(c);
adamc@1061	3324 }
adamc@1061	3325
adamc@1061	3326 uw_Basis_bool uw_Basis_isprint(uw_context ctx, uw_Basis_char c) {
adamc@1063	3327 return !!isprint(c);
adamc@1061	3328 }
adamc@1061	3329
adamc@1061	3330 uw_Basis_bool uw_Basis_ispunct(uw_context ctx, uw_Basis_char c) {
adamc@1063	3331 return !!ispunct(c);
adamc@1061	3332 }
adamc@1061	3333
adamc@1061	3334 uw_Basis_bool uw_Basis_isspace(uw_context ctx, uw_Basis_char c) {
adamc@1063	3335 return !!isspace(c);
adamc@1061	3336 }
adamc@1063	3337
adamc@1061	3338 uw_Basis_bool uw_Basis_isupper(uw_context ctx, uw_Basis_char c) {
adamc@1063	3339 return !!isupper(c);
adamc@1061	3340 }
adamc@1061	3341
adamc@1061	3342 uw_Basis_bool uw_Basis_isxdigit(uw_context ctx, uw_Basis_char c) {
adamc@1063	3343 return !!isxdigit(c);
adamc@1061	3344 }
adamc@1061	3345
adamc@1061	3346 uw_Basis_char uw_Basis_tolower(uw_context ctx, uw_Basis_char c) {
adamc@1061	3347 return tolower(c);
adamc@1061	3348 }
adamc@1061	3349
adamc@1061	3350 uw_Basis_char uw_Basis_toupper(uw_context ctx, uw_Basis_char c) {
adamc@1061	3351 return toupper(c);
adamc@1061	3352 }
adamc@1066	3353
adamc@1066	3354 uw_Basis_string uw_Basis_currentUrl(uw_context ctx) {
adamc@1066	3355 return ctx->current_url;
adamc@1066	3356 }
adamc@1066	3357
adamc@1066	3358 void uw_set_currentUrl(uw_context ctx, char *s) {
adamc@1066	3359 ctx->current_url = s;
adamc@1066	3360 }
adamc@1114	3361
adamc@1114	3362 void uw_set_deadline(uw_context ctx, int n) {
adamc@1114	3363 ctx->deadline = n;
adamc@1114	3364 }
adamc@1114	3365
adamc@1114	3366 void uw_check_deadline(uw_context ctx) {
adamc@1114	3367 if (uw_time > ctx->deadline)
adamc@1114	3368 uw_error(ctx, FATAL, "Maximum running time exceeded");
adamc@1114	3369 }
adamc@1115	3370
adamc@1115	3371 size_t uw_database_max = SIZE_MAX;

Mercurial > urweb

annotate src/c/urweb.c @ 1118:87b0a9d08e73