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

annotate src/c/urweb.c @ 1114:01b6c7144a44

Deadlines

author	Adam Chlipala <adamc@hcoop.net>
date	Sun, 03 Jan 2010 15:58:34 -0500
parents	40d48a2b78a7
children	150465f2895c

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

Mercurial > urweb

annotate src/c/urweb.c @ 1114:01b6c7144a44