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

annotate src/c/urweb.c @ 1115:150465f2895c

Database quotas

author	Adam Chlipala <adamc@hcoop.net>
date	Sun, 03 Jan 2010 17:13:45 -0500
parents	01b6c7144a44
children	31ef567fa772

rev	line source
adamc@1094	1 #define _XOPEN_SOURCE 600
adamc@436	2
adamc@117	3 #include <stdlib.h>
adamc@102	4 #include <stdio.h>
adamc@117	5 #include <string.h>
adamc@457	6 #include <strings.h>
adamc@106	7 #include <ctype.h>
adamc@167	8 #include <setjmp.h>
adamc@167	9 #include <stdarg.h>
adamc@682	10 #include <assert.h>
adamc@741	11 #include <ctype.h>
adamc@1114	12 #include <limits.h>
adamc@1113	13 #include <stdint.h>
adamc@1094	14 #include <sys/types.h>
adamc@1094	15 #include <sys/socket.h>
adamc@102	16
adamc@667	17 #include <pthread.h>
adamc@667	18
adamc@102	19 #include "types.h"
adamc@102	20
adamc@311	21 uw_unit uw_unit_v = {};
adamc@102	22
adamc@667	23
adamc@667	24 // Socket extras
adamc@667	25
adamc@863	26 int uw_really_send(int sock, const void *buf, ssize_t len) {
adamc@667	27 while (len > 0) {
adamc@856	28 ssize_t n = send(sock, buf, len, 0);
adamc@856	29
adamc@856	30 if (n < 0)
adamc@856	31 return n;
adamc@856	32
adamc@856	33 buf += n;
adamc@856	34 len -= n;
adamc@856	35 }
adamc@856	36
adamc@856	37 return 0;
adamc@856	38 }
adamc@856	39
adamc@856	40 int uw_really_write(int fd, const void *buf, size_t len) {
adamc@856	41 while (len > 0) {
adamc@856	42 ssize_t n = write(fd, buf, len);
adamc@667	43
adamc@667	44 if (n < 0)
adamc@667	45 return n;
adamc@667	46
adamc@667	47 buf += n;
adamc@667	48 len -= n;
adamc@667	49 }
adamc@667	50
adamc@667	51 return 0;
adamc@667	52 }
adamc@667	53
adamc@667	54
adamc@667	55 // Buffers
adamc@667	56
adamc@667	57 typedef struct {
adamc@1113	58 size_t max;
adamc@667	59 char start, front, *back;
adamc@667	60 } buf;
adamc@667	61
adamc@1113	62 static void buf_init(size_t max, buf *b, size_t s) {
adamc@1113	63 b->max = max;
adamc@667	64 b->front = b->start = malloc(s);
adamc@667	65 b->back = b->front + s;
adamc@667	66 }
adamc@667	67
adamc@667	68 static void buf_free(buf *b) {
adamc@667	69 free(b->start);
adamc@667	70 }
adamc@667	71
adamc@667	72 static void buf_reset(buf *b) {
adamc@667	73 b->front = b->start;
adamc@667	74 }
adamc@667	75
adamc@1113	76 static int buf_check(buf *b, size_t extra) {
adamc@667	77 if (b->back - b->front < extra) {
adamc@667	78 size_t desired = b->front - b->start + extra, next;
adamc@667	79 char *new_heap;
adamc@667	80
adamc@667	81 next = b->back - b->start;
adamc@667	82 if (next == 0)
adamc@667	83 next = 1;
adamc@667	84 for (; next < desired; next *= 2);
adamc@667	85
adamc@1113	86 if (next > b->max)
adamc@1113	87 if (desired <= b->max)
adamc@1113	88 next = desired;
adamc@1113	89 else
adamc@1113	90 return 1;
adamc@1113	91
adamc@667	92 new_heap = realloc(b->start, next);
adamc@667	93 b->front = new_heap + (b->front - b->start);
adamc@667	94 b->back = new_heap + next;
adamc@667	95 b->start = new_heap;
adamc@667	96 }
adamc@1113	97
adamc@1113	98 return 0;
adamc@1113	99 }
adamc@1113	100
adamc@1113	101 __attribute__((noreturn)) void uw_error(uw_context, failure_kind, const char *, ...);
adamc@1113	102
adamc@1113	103 static void ctx_buf_check(uw_context ctx, const char kind, buf b, size_t extra) {
adamc@1113	104 if (buf_check(b, extra))
adamc@1113	105 uw_error(ctx, FATAL, "Memory limit exceeded (%s)", kind);
adamc@667	106 }
adamc@667	107
adamc@667	108 static size_t buf_used(buf *b) {
adamc@667	109 return b->front - b->start;
adamc@667	110 }
adamc@667	111
adamc@667	112 static size_t buf_avail(buf *b) {
adamc@667	113 return b->back - b->start;
adamc@667	114 }
adamc@667	115
adamc@1113	116 static int buf_append(buf b, const char s, size_t len) {
adamc@1113	117 if (buf_check(b, len+1))
adamc@1113	118 return 1;
adamc@1113	119
adamc@1113	120 memcpy(b->front, s, len);
adamc@1113	121 b->front += len;
adamc@1113	122 *b->front = 0;
adamc@1113	123
adamc@1113	124 return 0;
adamc@1113	125 }
adamc@1113	126
adamc@1113	127 static void ctx_buf_append(uw_context ctx, const char kind, buf b, const char *s, size_t len) {
adamc@1113	128 ctx_buf_check(ctx, kind, b, len+1);
adamc@1113	129
adamc@668	130 memcpy(b->front, s, len);
adamc@668	131 b->front += len;
adamc@672	132 *b->front = 0;
adamc@668	133 }
adamc@667	134
adamc@668	135
adamc@672	136 // Persistent state types
adamc@667	137
adamc@667	138 typedef enum { UNUSED, USED } usage;
adamc@667	139
adamc@667	140 typedef struct client {
adamc@682	141 unsigned id;
adamc@667	142 usage mode;
adamc@682	143 int pass;
adamc@682	144 struct client *next;
adamc@689	145 pthread_mutex_t lock, pull_lock;
adamc@682	146 buf msgs;
adamc@682	147 int sock;
adamc@863	148 int (send)(int sockfd, const void buf, ssize_t len);
adamc@863	149 int (*close)(int fd);
adamc@682	150 time_t last_contact;
adamc@682	151 unsigned n_channels;
adamc@685	152 unsigned refcount;
adamc@667	153 } client;
adamc@667	154
adamc@672	155
adamc@672	156 // Persistent client state
adamc@672	157
adamc@682	158 static client *clients, clients_free, *clients_used;
adamc@682	159 static unsigned n_clients;
adamc@667	160
adamc@667	161 static pthread_mutex_t clients_mutex = PTHREAD_MUTEX_INITIALIZER;
adamc@667	162
adamc@1113	163 size_t uw_messages_max = SIZE_MAX;
adamc@1113	164 size_t uw_clients_max = SIZE_MAX;
adamc@1113	165
adamc@682	166 static client *new_client() {
adamc@667	167 client *c;
adamc@667	168
adamc@667	169 pthread_mutex_lock(&clients_mutex);
adamc@667	170
adamc@667	171 if (clients_free) {
adamc@667	172 c = clients_free;
adamc@682	173 clients_free = clients_free->next;
adamc@667	174 }
adamc@1113	175 else if (n_clients >= uw_clients_max)
adamc@1113	176 return NULL;
adamc@667	177 else {
adamc@667	178 ++n_clients;
adamc@667	179 clients = realloc(clients, sizeof(client) * n_clients);
adamc@667	180 c = malloc(sizeof(client));
adamc@667	181 c->id = n_clients-1;
adamc@682	182 pthread_mutex_init(&c->lock, NULL);
adamc@689	183 pthread_mutex_init(&c->pull_lock, NULL);
adamc@1113	184 buf_init(uw_messages_max, &c->msgs, 0);
adamc@667	185 clients[n_clients-1] = c;
adamc@667	186 }
adamc@667	187
adamc@682	188 pthread_mutex_lock(&c->lock);
adamc@667	189 c->mode = USED;
adamc@682	190 c->pass = rand();
adamc@682	191 c->sock = -1;
adamc@682	192 c->last_contact = time(NULL);
adamc@682	193 buf_reset(&c->msgs);
adamc@682	194 c->n_channels = 0;
adamc@685	195 c->refcount = 0;
adamc@682	196 pthread_mutex_unlock(&c->lock);
adamc@682	197
adamc@682	198 c->next = clients_used;
adamc@682	199 clients_used = c;
adamc@667	200
adamc@667	201 pthread_mutex_unlock(&clients_mutex);
adamc@667	202
adamc@667	203 return c;
adamc@667	204 }
adamc@667	205
adamc@685	206 static void use_client(client *c) {
adamc@685	207 pthread_mutex_lock(&c->lock);
adamc@685	208 ++c->refcount;
adamc@685	209 pthread_mutex_unlock(&c->lock);
adamc@689	210 pthread_mutex_lock(&c->pull_lock);
adamc@685	211 }
adamc@685	212
adamc@685	213 static void release_client(client *c) {
adamc@689	214 pthread_mutex_unlock(&c->pull_lock);
adamc@685	215 pthread_mutex_lock(&c->lock);
adamc@685	216 --c->refcount;
adamc@685	217 pthread_mutex_unlock(&c->lock);
adamc@689	218
adamc@685	219 }
adamc@685	220
adamc@856	221 static const char begin_msgs[] = "Content-type: text/plain\r\n\r\n";
adamc@667	222
adamc@682	223 static client *find_client(unsigned id) {
adamc@667	224 client *c;
adamc@667	225
adamc@667	226 pthread_mutex_lock(&clients_mutex);
adamc@667	227
adamc@667	228 if (id >= n_clients) {
adamc@667	229 pthread_mutex_unlock(&clients_mutex);
adamc@668	230 return NULL;
adamc@667	231 }
adamc@667	232
adamc@667	233 c = clients[id];
adamc@667	234
adamc@668	235 pthread_mutex_unlock(&clients_mutex);
adamc@668	236 return c;
adamc@668	237 }
adamc@668	238
adamc@856	239 static char *on_success = "HTTP/1.1 200 OK\r\n";
adamc@1065	240 static char *on_redirect = "HTTP/1.1 303 See Other\r\n";
adamc@856	241
adamc@856	242 void uw_set_on_success(char *s) {
adamc@856	243 on_success = s;
adamc@856	244 }
adamc@856	245
adamc@863	246 void uw_client_connect(unsigned id, int pass, int sock,
adamc@863	247 int (send)(int sockfd, const void buf, ssize_t len),
adamc@864	248 int (*close)(int fd),
adamc@864	249 void *logger_data, uw_logger log_error) {
adamc@682	250 client *c = find_client(id);
adamc@668	251
adamc@668	252 if (c == NULL) {
adamc@667	253 close(sock);
adamc@864	254 log_error(logger_data, "Out-of-bounds client request (%u)\n", id);
adamc@667	255 return;
adamc@667	256 }
adamc@667	257
adamc@682	258 pthread_mutex_lock(&c->lock);
adamc@671	259
adamc@682	260 if (c->mode != USED) {
adamc@682	261 pthread_mutex_unlock(&c->lock);
adamc@667	262 close(sock);
adamc@864	263 log_error(logger_data, "Client request for unused slot (%u)\n", id);
adamc@667	264 return;
adamc@667	265 }
adamc@667	266
adamc@682	267 if (pass != c->pass) {
adamc@682	268 pthread_mutex_unlock(&c->lock);
adamc@682	269 close(sock);
adamc@864	270 log_error(logger_data, "Wrong client password (%u, %d)\n", id, pass);
adamc@682	271 return;
adamc@667	272 }
adamc@667	273
adamc@682	274 if (c->sock != -1) {
adamc@863	275 c->close(c->sock);
adamc@682	276 c->sock = -1;
adamc@682	277 }
adamc@667	278
adamc@682	279 c->last_contact = time(NULL);
adamc@682	280
adamc@682	281 if (buf_used(&c->msgs) > 0) {
adamc@863	282 send(sock, on_success, strlen(on_success));
adamc@863	283 send(sock, begin_msgs, sizeof(begin_msgs) - 1);
adamc@863	284 send(sock, c->msgs.start, buf_used(&c->msgs));
adamc@682	285 buf_reset(&c->msgs);
adamc@667	286 close(sock);
adamc@667	287 }
adamc@863	288 else {
adamc@682	289 c->sock = sock;
adamc@863	290 c->send = send;
adamc@863	291 c->close = close;
adamc@863	292 }
adamc@667	293
adamc@682	294 pthread_mutex_unlock(&c->lock);
adamc@667	295 }
adamc@667	296
adamc@682	297 static void free_client(client *c) {
adamc@682	298 c->mode = UNUSED;
adamc@682	299 c->pass = -1;
adamc@667	300
adamc@682	301 c->next = clients_free;
adamc@682	302 clients_free = c;
adamc@667	303 }
adamc@667	304
adamc@682	305 static uw_Basis_channel new_channel(client *c) {
adamc@682	306 uw_Basis_channel ch = {c->id, c->n_channels++};
adamc@668	307 return ch;
adamc@668	308 }
adamc@668	309
adamc@685	310 static void client_send(client c, buf msg) {
adamc@685	311 pthread_mutex_lock(&c->lock);
adamc@671	312
adamc@682	313 if (c->sock != -1) {
adamc@863	314 c->send(c->sock, on_success, strlen(on_success));
adamc@863	315 c->send(c->sock, begin_msgs, sizeof(begin_msgs) - 1);
adamc@863	316 c->send(c->sock, msg->start, buf_used(msg));
adamc@863	317 c->close(c->sock);
adamc@682	318 c->sock = -1;
adamc@1113	319 } else if (buf_append(&c->msgs, msg->start, buf_used(msg)))
adamc@1113	320 fprintf(stderr, "Client message buffer size exceeded");
adamc@671	321
adamc@685	322 pthread_mutex_unlock(&c->lock);
adamc@668	323 }
adamc@668	324
adamc@668	325
adamc@668	326 // Global entry points
adamc@668	327
adamc@1104	328 extern void uw_init_crypto();
adamc@1104	329
adamc@668	330 void uw_global_init() {
adamc@668	331 srand(time(NULL) ^ getpid());
adamc@668	332
adamc@668	333 clients = malloc(0);
adamc@1104	334
adamc@1104	335 uw_init_crypto();
adamc@1094	336 }
adamc@1094	337
adamc@1094	338 void uw_app_init(uw_app *app) {
adamc@1094	339 app->client_init();
adamc@668	340 }
adamc@668	341
adamc@1114	342 int uw_time = 0;
adamc@1114	343
adamc@668	344
adamc@667	345 // Single-request state
adamc@667	346
adamc@167	347 #define ERROR_BUF_LEN 1024
adamc@167	348
adamc@323	349 typedef struct regions {
adamc@323	350 struct regions *next;
adamc@323	351 } regions;
adamc@323	352
adamc@425	353 typedef struct {
adamc@425	354 void (func)(void);
adamc@425	355 void *arg;
adamc@425	356 } cleanup;
adamc@425	357
adamc@671	358 typedef struct {
adamc@682	359 unsigned client;
adamc@671	360 buf msgs;
adamc@682	361 } delta;
adamc@671	362
adamc@737	363 typedef enum {
adamc@759	364 UNSET, NORMAL, FIL, SUBFORM, SUBFORMS, ENTRY
adamc@737	365 } input_kind;
adamc@737	366
adamc@756	367 typedef struct input {
adamc@737	368 input_kind kind;
adamc@737	369 union {
adamc@737	370 char *normal;
adamc@739	371 uw_Basis_file file;
adamc@756	372 struct {
adamc@759	373 struct input fields, parent;
adamc@756	374 } subform;
adamc@759	375 struct {
adamc@759	376 struct input entries, parent;
adamc@759	377 } subforms;
adamc@759	378 struct {
adamc@759	379 struct input fields, next, *parent;
adamc@759	380 } entry;
adamc@737	381 } data;
adamc@737	382 } input;
adamc@737	383
adamc@771	384 typedef struct {
adamc@771	385 void *data;
adamc@771	386 uw_callback commit, rollback, free;
adamc@771	387 } transactional;
adamc@771	388
adamc@1061	389 typedef struct {
adamc@1061	390 char *name;
adamc@1061	391 void *data;
adamc@1061	392 void (free)(void);
adamc@1061	393 } global;
adamc@1061	394
adamc@311	395 struct uw_context {
adamc@1094	396 uw_app *app;
adamc@1094	397
adamc@854	398 char (get_header)(void , const char );
adamc@854	399 void *get_header_data;
adamc@457	400
adamc@666	401 buf outHeaders, page, heap, script;
adamc@1065	402 int returning_indirectly;
adamc@759	403 input inputs, subinputs, *cur_container;
adamc@1094	404 size_t sz_inputs, n_subinputs, used_subinputs;
adamc@167	405
adamc@565	406 int source_count;
adamc@562	407
adamc@272	408 void *db;
adamc@272	409
adamc@167	410 jmp_buf jmp_buf;
adamc@167	411
adamc@323	412 regions *regions;
adamc@323	413
adamc@425	414 cleanup cleanup, cleanup_front, *cleanup_back;
adamc@425	415
adamc@1094	416 const char *script_header;
adamc@643	417
adamc@736	418 int needs_push, needs_sig;
adamc@693	419
adamc@682	420 size_t n_deltas, used_deltas;
adamc@682	421 delta *deltas;
adamc@671	422
adamc@682	423 client *client;
adamc@682	424
adamc@771	425 transactional *transactionals;
adamc@771	426 size_t n_transactionals, used_transactionals;
adamc@771	427
adamc@1061	428 global *globals;
adamc@1061	429 size_t n_globals;
adamc@1061	430
adamc@1066	431 char *current_url;
adamc@1066	432
adamc@1114	433 int deadline;
adamc@1114	434
adamc@167	435 char error_message[ERROR_BUF_LEN];
adamc@117	436 };
adamc@117	437
adamc@1113	438 size_t uw_headers_max = SIZE_MAX;
adamc@1113	439 size_t uw_page_max = SIZE_MAX;
adamc@1113	440 size_t uw_heap_max = SIZE_MAX;
adamc@1113	441 size_t uw_script_max = SIZE_MAX;
adamc@1113	442
adamc@687	443 uw_context uw_init() {
adamc@311	444 uw_context ctx = malloc(sizeof(struct uw_context));
adamc@136	445
adamc@1094	446 ctx->app = NULL;
adamc@1094	447
adamc@854	448 ctx->get_header = NULL;
adamc@854	449 ctx->get_header_data = NULL;
adamc@457	450
adamc@1113	451 buf_init(uw_headers_max, &ctx->outHeaders, 0);
adamc@1113	452 buf_init(uw_page_max, &ctx->page, 0);
adamc@1065	453 ctx->returning_indirectly = 0;
adamc@1113	454 buf_init(uw_heap_max, &ctx->heap, 0);
adamc@1113	455 buf_init(uw_script_max, &ctx->script, 1);
adamc@667	456 ctx->script.start[0] = 0;
adamc@136	457
adamc@1094	458 ctx->inputs = malloc(0);
adamc@759	459 ctx->cur_container = NULL;
adamc@756	460 ctx->subinputs = malloc(0);
adamc@1094	461 ctx->sz_inputs = ctx->n_subinputs = ctx->used_subinputs = 0;
adamc@144	462
adamc@272	463 ctx->db = NULL;
adamc@272	464
adamc@323	465 ctx->regions = NULL;
adamc@323	466
adamc@425	467 ctx->cleanup_front = ctx->cleanup_back = ctx->cleanup = malloc(0);
adamc@425	468
adamc@643	469 ctx->script_header = "";
adamc@693	470 ctx->needs_push = 0;
adamc@736	471 ctx->needs_sig = 0;
adamc@1104	472
adamc@565	473 ctx->source_count = 0;
adamc@562	474
adamc@682	475 ctx->n_deltas = ctx->used_deltas = 0;
adamc@671	476 ctx->deltas = malloc(0);
adamc@671	477
adamc@700	478 ctx->client = NULL;
adamc@700	479
adamc@700	480 ctx->error_message[0] = 0;
adamc@700	481
adamc@771	482 ctx->transactionals = malloc(0);
adamc@771	483 ctx->n_transactionals = ctx->used_transactionals = 0;
adamc@771	484
adamc@1061	485 ctx->globals = malloc(0);
adamc@1061	486 ctx->n_globals = 0;
adamc@1061	487
adamc@1066	488 ctx->current_url = "";
adamc@1066	489
adamc@1114	490 ctx->deadline = INT_MAX;
adamc@1114	491
adamc@117	492 return ctx;
adamc@106	493 }
adamc@106	494
adamc@1113	495 size_t uw_inputs_max = SIZE_MAX;
adamc@1113	496
adamc@1113	497 int uw_set_app(uw_context ctx, uw_app *app) {
adamc@1094	498 ctx->app = app;
adamc@1094	499
adamc@1105	500 if (app && app->inputs_len > ctx->sz_inputs) {
adamc@1113	501 if (app->inputs_len > uw_inputs_max)
adamc@1113	502 return 1;
adamc@1113	503
adamc@1094	504 ctx->sz_inputs = app->inputs_len;
adamc@1094	505 ctx->inputs = realloc(ctx->inputs, ctx->sz_inputs * sizeof(input));
adamc@1094	506 memset(ctx->inputs, 0, ctx->sz_inputs * sizeof(input));
adamc@1094	507 }
adamc@1094	508 }
adamc@1094	509
adamc@311	510 void uw_set_db(uw_context ctx, void *db) {
adamc@272	511 ctx->db = db;
adamc@272	512 }
adamc@272	513
adamc@311	514 void *uw_get_db(uw_context ctx) {
adamc@272	515 return ctx->db;
adamc@272	516 }
adamc@272	517
adamc@311	518 void uw_free(uw_context ctx) {
adamc@671	519 size_t i;
adamc@671	520
adamc@666	521 buf_free(&ctx->outHeaders);
adamc@666	522 buf_free(&ctx->script);
adamc@666	523 buf_free(&ctx->page);
adamc@666	524 buf_free(&ctx->heap);
adamc@144	525 free(ctx->inputs);
adamc@756	526 free(ctx->subinputs);
adamc@425	527 free(ctx->cleanup);
adamc@771	528 free(ctx->transactionals);
adamc@671	529
adamc@682	530 for (i = 0; i < ctx->n_deltas; ++i)
adamc@671	531 buf_free(&ctx->deltas[i].msgs);
adamc@671	532
adamc@1061	533 for (i = 0; i < ctx->n_globals; ++i)
adamc@1089	534 if (ctx->globals[i].free)
adamc@1089	535 ctx->globals[i].free(ctx->globals[i].data);
adamc@1061	536
adamc@136	537 free(ctx);
adamc@136	538 }
adamc@136	539
adamc@562	540 void uw_reset_keep_error_message(uw_context ctx) {
adamc@756	541 size_t i;
adamc@756	542
adamc@666	543 buf_reset(&ctx->outHeaders);
adamc@666	544 buf_reset(&ctx->script);
adamc@667	545 ctx->script.start[0] = 0;
adamc@666	546 buf_reset(&ctx->page);
adamc@1065	547 ctx->returning_indirectly = 0;
adamc@666	548 buf_reset(&ctx->heap);
adamc@323	549 ctx->regions = NULL;
adamc@425	550 ctx->cleanup_front = ctx->cleanup;
adamc@565	551 ctx->source_count = 0;
adamc@682	552 ctx->used_deltas = 0;
adamc@682	553 ctx->client = NULL;
adamc@759	554 ctx->cur_container = NULL;
adamc@771	555 ctx->used_transactionals = 0;
adamc@167	556 }
adamc@167	557
adamc@562	558 void uw_reset_keep_request(uw_context ctx) {
adamc@562	559 uw_reset_keep_error_message(ctx);
adamc@562	560 ctx->error_message[0] = 0;
adamc@167	561 }
adamc@167	562
adamc@311	563 void uw_reset(uw_context ctx) {
adamc@311	564 uw_reset_keep_request(ctx);
adamc@1105	565 if (ctx->app)
adamc@1105	566 memset(ctx->inputs, 0, ctx->app->inputs_len * sizeof(input));
adamc@756	567 memset(ctx->subinputs, 0, ctx->n_subinputs * sizeof(input));
adamc@756	568 ctx->used_subinputs = 0;
adamc@144	569 }
adamc@144	570
adamc@311	571 failure_kind uw_begin_init(uw_context ctx) {
adamc@272	572 int r = setjmp(ctx->jmp_buf);
adamc@272	573
adamc@1105	574 if (r == 0 && ctx->app)
adamc@1094	575 ctx->app->db_init(ctx);
adamc@272	576
adamc@272	577 return r;
adamc@272	578 }
adamc@272	579
adamc@854	580 void uw_set_headers(uw_context ctx, char (get_header)(void , const char ), void *get_header_data) {
adamc@854	581 ctx->get_header = get_header;
adamc@854	582 ctx->get_header_data = get_header_data;
adamc@742	583 }
adamc@742	584
adamc@801	585 static void uw_set_error(uw_context ctx, const char *fmt, ...) {
adamc@801	586 va_list ap;
adamc@801	587 va_start(ap, fmt);
adamc@801	588
adamc@801	589 vsnprintf(ctx->error_message, ERROR_BUF_LEN, fmt, ap);
adamc@801	590 }
adamc@801	591
adamc@311	592 __attribute__((noreturn)) void uw_error(uw_context ctx, failure_kind fk, const char *fmt, ...) {
adamc@425	593 cleanup *cl;
adamc@425	594
adamc@167	595 va_list ap;
adamc@167	596 va_start(ap, fmt);
adamc@167	597
adamc@167	598 vsnprintf(ctx->error_message, ERROR_BUF_LEN, fmt, ap);
adamc@167	599
adamc@425	600 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adamc@425	601 cl->func(cl->arg);
adamc@425	602
adamc@425	603 ctx->cleanup_front = ctx->cleanup;
adamc@425	604
adamc@190	605 longjmp(ctx->jmp_buf, fk);
adamc@167	606 }
adamc@167	607
adamc@1113	608 size_t uw_cleanup_max = SIZE_MAX;
adamc@1113	609
adamc@425	610 void uw_push_cleanup(uw_context ctx, void (func)(void ), void *arg) {
adamc@425	611 if (ctx->cleanup_front >= ctx->cleanup_back) {
adamc@425	612 int len = ctx->cleanup_back - ctx->cleanup, newLen;
adamc@425	613 if (len == 0)
adamc@425	614 newLen = 1;
adamc@425	615 else
adamc@428	616 newLen = len * 2;
adamc@1113	617
adamc@1113	618 if (newLen > uw_cleanup_max)
adamc@1113	619 if (len+1 <= uw_cleanup_max)
adamc@1113	620 newLen = uw_cleanup_max;
adamc@1113	621 else
adamc@1113	622 uw_error(ctx, FATAL, "Exceeded limit on number of cleanup handlers");
adamc@1113	623
adamc@470	624 ctx->cleanup = realloc(ctx->cleanup, newLen * sizeof(cleanup));
adamc@425	625 ctx->cleanup_front = ctx->cleanup + len;
adamc@425	626 ctx->cleanup_back = ctx->cleanup + newLen;
adamc@425	627 }
adamc@425	628
adamc@425	629 ctx->cleanup_front->func = func;
adamc@425	630 ctx->cleanup_front->arg = arg;
adamc@425	631 ++ctx->cleanup_front;
adamc@425	632 }
adamc@425	633
adamc@682	634 uw_Basis_string uw_Basis_requestHeader(uw_context ctx, uw_Basis_string h) {
adamc@854	635 return ctx->get_header(ctx->get_header_data, h);
adamc@682	636 }
adamc@682	637
adamc@682	638 void uw_login(uw_context ctx) {
adamc@693	639 if (ctx->needs_push) {
adamc@682	640 char id_s, pass_s;
adamc@682	641
adamc@682	642 if ((id_s = uw_Basis_requestHeader(ctx, "UrWeb-Client"))
adamc@682	643 && (pass_s = uw_Basis_requestHeader(ctx, "UrWeb-Pass"))) {
adamc@682	644 unsigned id = atoi(id_s);
adamc@682	645 int pass = atoi(pass_s);
adamc@682	646 client *c = find_client(id);
adamc@682	647
adamc@682	648 if (c == NULL)
adamc@682	649 uw_error(ctx, FATAL, "Unknown client ID in HTTP headers (%s, %s)", id_s, pass_s);
adamc@682	650 else {
adamc@685	651 use_client(c);
adamc@682	652 ctx->client = c;
adamc@682	653
adamc@682	654 if (c->mode != USED)
adamc@682	655 uw_error(ctx, FATAL, "Stale client ID (%u) in subscription request", id);
adamc@682	656 if (c->pass != pass)
adamc@682	657 uw_error(ctx, FATAL, "Wrong client password (%u, %d) in subscription request", id, pass);
adamc@682	658 }
adamc@682	659 } else {
adamc@682	660 client *c = new_client();
adamc@1113	661
adamc@1113	662 if (c == NULL)
adamc@1113	663 uw_error(ctx, FATAL, "Limit exceeded on number of message-passing clients");
adamc@1113	664
adamc@685	665 use_client(c);
adamc@682	666 ctx->client = c;
adamc@864	667 }
adamc@682	668 }
adamc@682	669 }
adamc@682	670
adamc@671	671 failure_kind uw_begin(uw_context ctx, char *path) {
adamc@671	672 int r = setjmp(ctx->jmp_buf);
adamc@671	673
adamc@671	674 if (r == 0) {
adamc@1094	675 if (ctx->app->db_begin(ctx))
adamc@671	676 uw_error(ctx, BOUNDED_RETRY, "Error running SQL BEGIN");
adamc@682	677
adamc@1094	678 ctx->app->handle(ctx, path);
adamc@671	679 }
adamc@671	680
adamc@671	681 return r;
adamc@671	682 }
adamc@671	683
adamc@772	684 uw_Basis_client uw_Basis_self(uw_context ctx) {
adamc@682	685 if (ctx->client == NULL)
adamc@682	686 uw_error(ctx, FATAL, "Call to Basis.self() from page that has only server-side code");
adamc@682	687
adamc@682	688 return ctx->client->id;
adamc@682	689 }
adamc@682	690
adamc@425	691 void uw_pop_cleanup(uw_context ctx) {
adamc@425	692 if (ctx->cleanup_front == ctx->cleanup)
adamc@425	693 uw_error(ctx, FATAL, "Attempt to pop from empty cleanup action stack");
adamc@425	694
adamc@425	695 --ctx->cleanup_front;
adamc@425	696 ctx->cleanup_front->func(ctx->cleanup_front->arg);
adamc@425	697 }
adamc@425	698
adamc@311	699 char *uw_error_message(uw_context ctx) {
adamc@167	700 return ctx->error_message;
adamc@167	701 }
adamc@167	702
adamc@1115	703 void uw_set_error_message(uw_context ctx, const char *msg) {
adamc@1115	704 strncpy(ctx->error_message, msg, sizeof(ctx->error_message));
adamc@1115	705 ctx->error_message[sizeof(ctx->error_message)-1] = 0;
adamc@1115	706 }
adamc@1115	707
adamc@759	708 static input *INP(uw_context ctx) {
adamc@759	709 if (ctx->cur_container == NULL)
adamc@759	710 return ctx->inputs;
adamc@759	711 else if (ctx->cur_container->kind == SUBFORM)
adamc@759	712 return ctx->cur_container->data.subform.fields;
adamc@759	713 else if (ctx->cur_container->kind == ENTRY)
adamc@759	714 return ctx->cur_container->data.entry.fields;
adamc@759	715 else
adamc@760	716 uw_error(ctx, FATAL, "INP: Wrong kind (%d, %p)", ctx->cur_container->kind, ctx->cur_container);
adamc@759	717 }
adamc@759	718
adamc@760	719 static void adjust_pointer(input *ptr, input old_start, input *new_start, size_t len) {
adamc@760	720 if (ptr != NULL && ptr >= old_start && *ptr < old_start + len)
adamc@760	721 *ptr += new_start - old_start;
adamc@760	722 }
adamc@760	723
adamc@760	724 static void adjust_input(input x, input old_start, input *new_start, size_t len) {
adamc@759	725 switch (x->kind) {
adamc@759	726 case SUBFORM:
adamc@760	727 adjust_pointer(&x->data.subform.fields, old_start, new_start, len);
adamc@760	728 adjust_pointer(&x->data.subform.parent, old_start, new_start, len);
adamc@759	729 break;
adamc@759	730 case SUBFORMS:
adamc@760	731 adjust_pointer(&x->data.subforms.entries, old_start, new_start, len);
adamc@760	732 adjust_pointer(&x->data.subforms.parent, old_start, new_start, len);
adamc@759	733 break;
adamc@759	734 case ENTRY:
adamc@760	735 adjust_pointer(&x->data.entry.fields, old_start, new_start, len);
adamc@760	736 adjust_pointer(&x->data.entry.next, old_start, new_start, len);
adamc@760	737 adjust_pointer(&x->data.entry.parent, old_start, new_start, len);
adamc@759	738 }
adamc@759	739 }
adamc@759	740
adamc@1113	741 size_t uw_subinputs_max = SIZE_MAX;
adamc@1113	742
adamc@759	743 static input *check_input_space(uw_context ctx, size_t len) {
adamc@759	744 size_t i;
adamc@759	745 input *r;
adamc@759	746
adamc@759	747 if (ctx->used_subinputs + len >= ctx->n_subinputs) {
adamc@1113	748 if (ctx->used_subinputs + len > uw_subinputs_max)
adamc@1113	749 uw_error(ctx, FATAL, "Exceeded limit on number of subinputs");
adamc@1113	750
adamc@759	751 input new_subinputs = realloc(ctx->subinputs, sizeof(input) (ctx->used_subinputs + len));
adamc@759	752 size_t offset = new_subinputs - ctx->subinputs;
adamc@759	753
adamc@760	754 if (ctx->subinputs != new_subinputs) {
adamc@760	755 for (i = 0; i < ctx->used_subinputs; ++i)
adamc@760	756 adjust_input(&new_subinputs[i], ctx->subinputs, new_subinputs, ctx->used_subinputs);
adamc@1094	757 for (i = 0; i < ctx->app->inputs_len; ++i)
adamc@760	758 adjust_input(&ctx->inputs[i], ctx->subinputs, new_subinputs, ctx->used_subinputs);
adamc@760	759
adamc@760	760 adjust_pointer(&ctx->cur_container, ctx->subinputs, new_subinputs, ctx->used_subinputs);
adamc@760	761
adamc@760	762 ctx->n_subinputs = ctx->used_subinputs + len;
adamc@760	763 ctx->subinputs = new_subinputs;
adamc@760	764 }
adamc@759	765 }
adamc@759	766
adamc@759	767 r = &ctx->subinputs[ctx->used_subinputs];
adamc@759	768
adamc@759	769 for (i = 0; i < len; ++i)
adamc@759	770 ctx->subinputs[ctx->used_subinputs++].kind = UNUSED;
adamc@759	771
adamc@759	772 return r;
adamc@759	773 }
adamc@756	774
adamc@801	775 int uw_set_input(uw_context ctx, const char name, char value) {
adamc@1050	776 //printf("Input name %s\n", name);
adamc@1038	777
adamc@756	778 if (!strcasecmp(name, ".b")) {
adamc@1094	779 int n = ctx->app->input_num(value);
adamc@756	780 input *inps;
adamc@756	781
adamc@801	782 if (n < 0) {
adamc@801	783 uw_set_error(ctx, "Bad subform name %s", value);
adamc@801	784 return -1;
adamc@801	785 }
adamc@801	786
adamc@1094	787 if (n >= ctx->app->inputs_len) {
adamc@801	788 uw_set_error(ctx, "For subform name %s, index %d is out of range", value, n);
adamc@801	789 return -1;
adamc@801	790 }
adamc@756	791
adamc@1094	792 inps = check_input_space(ctx, ctx->app->inputs_len);
adamc@759	793
adamc@759	794 INP(ctx)[n].kind = SUBFORM;
adamc@759	795 INP(ctx)[n].data.subform.parent = ctx->cur_container;
adamc@759	796 INP(ctx)[n].data.subform.fields = inps;
adamc@759	797 ctx->cur_container = &INP(ctx)[n];
adamc@756	798 } else if (!strcasecmp(name, ".e")) {
adamc@756	799 input *tmp;
adamc@756	800
adamc@801	801 if (ctx->cur_container == NULL) {
adamc@801	802 uw_set_error(ctx, "Unmatched subform closer");
adamc@801	803 return -1;
adamc@801	804 }
adamc@756	805
adamc@759	806 tmp = ctx->cur_container;
adamc@759	807 switch (tmp->kind) {
adamc@759	808 case SUBFORM:
adamc@759	809 ctx->cur_container = tmp->data.subform.parent;
adamc@759	810 tmp->data.subform.parent = NULL;
adamc@759	811 break;
adamc@759	812 case SUBFORMS:
adamc@759	813 ctx->cur_container = tmp->data.subforms.parent;
adamc@759	814 tmp->data.subforms.parent = NULL;
adamc@759	815 break;
adamc@759	816 case ENTRY:
adamc@759	817 ctx->cur_container = tmp->data.entry.parent;
adamc@759	818 break;
adamc@759	819 default:
adamc@801	820 uw_set_error(ctx, "uw_set_input: Wrong kind");
adamc@801	821 return -1;
adamc@759	822 }
adamc@759	823 } else if (!strcasecmp(name, ".s")) {
adamc@1094	824 int n = ctx->app->input_num(value);
adamc@759	825
adamc@801	826 if (n < 0) {
adamc@801	827 uw_set_error(ctx, "Bad subforms name %s", value);
adamc@801	828 return -1;
adamc@801	829 }
adamc@801	830
adamc@1094	831 if (n >= ctx->app->inputs_len) {
adamc@801	832 uw_set_error(ctx, "For subforms name %s, index %d is out of range", value, n);
adamc@801	833 return -1;
adamc@801	834 }
adamc@759	835
adamc@759	836 INP(ctx)[n].kind = SUBFORMS;
adamc@759	837 INP(ctx)[n].data.subforms.parent = ctx->cur_container;
adamc@759	838 INP(ctx)[n].data.subforms.entries = NULL;
adamc@759	839 ctx->cur_container = &INP(ctx)[n];
adamc@759	840 } else if (!strcasecmp(name, ".i")) {
adamc@759	841 input *inps;
adamc@759	842
adamc@801	843 if (!ctx->cur_container) {
adamc@801	844 uw_set_error(ctx, "New entry without container");
adamc@801	845 return -1;
adamc@801	846 }
adamc@801	847
adamc@801	848 if (ctx->cur_container->kind != SUBFORMS) {
adamc@801	849 uw_set_error(ctx, "Bad kind for entry parent");
adamc@801	850 return -1;
adamc@801	851 }
adamc@759	852
adamc@1094	853 inps = check_input_space(ctx, ctx->app->inputs_len + 1);
adamc@759	854
adamc@759	855 inps->kind = ENTRY;
adamc@759	856 inps->data.entry.parent = ctx->cur_container;
adamc@759	857 inps->data.entry.next = ctx->cur_container->data.subforms.entries;
adamc@759	858 ctx->cur_container->data.subforms.entries = inps;
adamc@759	859
adamc@759	860 inps->data.entry.fields = inps+1;
adamc@759	861 ctx->cur_container = inps;
adamc@756	862 } else {
adamc@1094	863 int n = ctx->app->input_num(name);
adamc@756	864
adamc@801	865 if (n < 0) {
adamc@1038	866 if (!strcmp(name, "null"))
adamc@1038	867 return 0;
adamc@801	868 uw_set_error(ctx, "Bad input name %s", name);
adamc@801	869 return -1;
adamc@801	870 }
adamc@801	871
adamc@1094	872 if (n >= ctx->app->inputs_len) {
adamc@801	873 uw_set_error(ctx, "For input name %s, index %d is out of range", name, n);
adamc@801	874 return -1;
adamc@801	875 }
adamc@756	876
adamc@756	877 INP(ctx)[n].kind = NORMAL;
adamc@756	878 INP(ctx)[n].data.normal = value;
adamc@756	879 }
adamc@801	880
adamc@801	881 return 0;
adamc@144	882 }
adamc@144	883
adamc@311	884 char *uw_get_input(uw_context ctx, int n) {
adamc@169	885 if (n < 0)
adamc@311	886 uw_error(ctx, FATAL, "Negative input index %d", n);
adamc@1094	887 if (n >= ctx->app->inputs_len)
adamc@311	888 uw_error(ctx, FATAL, "Out-of-bounds input index %d", n);
adamc@737	889
adamc@756	890 switch (INP(ctx)[n].kind) {
adamc@737	891 case UNSET:
adamc@737	892 return NULL;
adamc@739	893 case FIL:
adamc@739	894 uw_error(ctx, FATAL, "Tried to read a file form input as normal");
adamc@756	895 case SUBFORM:
adamc@756	896 uw_error(ctx, FATAL, "Tried to read a subform form input as normal");
adamc@759	897 case SUBFORMS:
adamc@759	898 uw_error(ctx, FATAL, "Tried to read a subforms form input as normal");
adamc@759	899 case ENTRY:
adamc@759	900 uw_error(ctx, FATAL, "Tried to read an entry form input as normal");
adamc@737	901 case NORMAL:
adamc@756	902 return INP(ctx)[n].data.normal;
adamc@737	903 default:
adamc@737	904 uw_error(ctx, FATAL, "Impossible input kind");
adamc@737	905 }
adamc@138	906 }
adamc@138	907
adamc@311	908 char *uw_get_optional_input(uw_context ctx, int n) {
adamc@190	909 if (n < 0)
adamc@311	910 uw_error(ctx, FATAL, "Negative input index %d", n);
adamc@1094	911 if (n >= ctx->app->inputs_len)
adamc@311	912 uw_error(ctx, FATAL, "Out-of-bounds input index %d", n);
adamc@737	913
adamc@756	914 switch (INP(ctx)[n].kind) {
adamc@737	915 case UNSET:
adamc@737	916 return "";
adamc@739	917 case FIL:
adamc@739	918 uw_error(ctx, FATAL, "Tried to read a file form input as normal");
adamc@756	919 case SUBFORM:
adamc@756	920 uw_error(ctx, FATAL, "Tried to read a subform form input as normal");
adamc@759	921 case SUBFORMS:
adamc@759	922 uw_error(ctx, FATAL, "Tried to read a subforms form input as normal");
adamc@759	923 case ENTRY:
adamc@759	924 uw_error(ctx, FATAL, "Tried to read an entry form input as normal");
adamc@737	925 case NORMAL:
adamc@756	926 return INP(ctx)[n].data.normal;
adamc@737	927 default:
adamc@737	928 uw_error(ctx, FATAL, "Impossible input kind");
adamc@737	929 }
adamc@737	930 }
adamc@737	931
adamc@801	932 int uw_set_file_input(uw_context ctx, const char *name, uw_Basis_file f) {
adamc@1094	933 int n = ctx->app->input_num(name);
adamc@737	934
adamc@801	935 if (n < 0) {
adamc@801	936 uw_set_error(ctx, "Bad file input name %s", name);
adamc@801	937 return -1;
adamc@801	938 }
adamc@801	939
adamc@1094	940 if (n >= ctx->app->inputs_len) {
adamc@801	941 uw_set_error(ctx, "For file input name %s, index %d is out of range", name, n);
adamc@801	942 return -1;
adamc@801	943 }
adamc@737	944
adamc@739	945 ctx->inputs[n].kind = FIL;
adamc@739	946 ctx->inputs[n].data.file = f;
adamc@801	947
adamc@801	948 return 0;
adamc@737	949 }
adamc@737	950
adamc@739	951 void *uw_malloc(uw_context ctx, size_t len);
adamc@739	952
adamc@760	953 static void parents(input *inp) {
adamc@760	954 printf("Stack: %p\n", inp);
adamc@760	955 while (inp) {
adamc@760	956 switch (inp->kind) {
adamc@760	957 case NORMAL:
adamc@760	958 printf("Normal(%p)\n", inp);
adamc@760	959 break;
adamc@760	960 case FIL:
adamc@760	961 printf("File(%p)\n", inp);
adamc@760	962 break;
adamc@760	963 case SUBFORM:
adamc@760	964 printf("Subform; fields = %p\n", inp->data.subform.fields);
adamc@760	965 inp = inp->data.subform.parent;
adamc@760	966 break;
adamc@760	967 case SUBFORMS:
adamc@760	968 printf("Subforms; entries = %p\n", inp->data.subforms.entries);
adamc@760	969 inp = inp->data.subforms.parent;
adamc@760	970 break;
adamc@760	971 case ENTRY:
adamc@760	972 printf("Entry; fields = %p; next = %p\n", inp->data.entry.fields, inp->data.entry.next);
adamc@760	973 inp = inp->data.entry.parent;
adamc@760	974 break;
adamc@760	975 default:
adamc@760	976 inp = NULL;
adamc@760	977 }
adamc@760	978 }
adamc@760	979 }
adamc@760	980
adamc@739	981 uw_Basis_file uw_get_file_input(uw_context ctx, int n) {
adamc@737	982 if (n < 0)
adamc@737	983 uw_error(ctx, FATAL, "Negative file input index %d", n);
adamc@1094	984 if (n >= ctx->app->inputs_len)
adamc@737	985 uw_error(ctx, FATAL, "Out-of-bounds file input index %d", n);
adamc@737	986
adamc@756	987 switch (INP(ctx)[n].kind) {
adamc@737	988 case UNSET:
adamc@737	989 {
adamc@739	990 char *data = uw_malloc(ctx, 0);
adamc@740	991 uw_Basis_file f = {NULL, "", {0, data}};
adamc@739	992 return f;
adamc@737	993 }
adamc@739	994 case FIL:
adamc@756	995 return INP(ctx)[n].data.file;
adamc@737	996 case NORMAL:
adamc@737	997 uw_error(ctx, FATAL, "Tried to read a normal form input as files");
adamc@756	998 case SUBFORM:
adamc@756	999 uw_error(ctx, FATAL, "Tried to read a subform form input as files");
adamc@759	1000 case SUBFORMS:
adamc@759	1001 uw_error(ctx, FATAL, "Tried to read a subforms form input as files");
adamc@759	1002 case ENTRY:
adamc@759	1003 uw_error(ctx, FATAL, "Tried to read an entry form input as files");
adamc@737	1004 default:
adamc@737	1005 uw_error(ctx, FATAL, "Impossible input kind");
adamc@737	1006 }
adamc@190	1007 }
adamc@190	1008
adamc@756	1009 void uw_enter_subform(uw_context ctx, int n) {
adamc@756	1010 if (n < 0)
adamc@756	1011 uw_error(ctx, FATAL, "Negative subform index %d", n);
adamc@1094	1012 if (n >= ctx->app->inputs_len)
adamc@756	1013 uw_error(ctx, FATAL, "Out-of-bounds subform index %d", n);
adamc@756	1014
adamc@756	1015 switch (INP(ctx)[n].kind) {
adamc@756	1016 case UNSET:
adamc@756	1017 uw_error(ctx, FATAL, "Missing subform");
adamc@756	1018 case FIL:
adamc@756	1019 uw_error(ctx, FATAL, "Tried to read a file form input as subform");
adamc@756	1020 case NORMAL:
adamc@756	1021 uw_error(ctx, FATAL, "Tried to read a normal form input as subform");
adamc@759	1022 case SUBFORMS:
adamc@759	1023 uw_error(ctx, FATAL, "Tried to read a subforms form input as subform");
adamc@759	1024 case ENTRY:
adamc@759	1025 uw_error(ctx, FATAL, "Tried to read an entry form input as subform");
adamc@756	1026 case SUBFORM:
adamc@759	1027 INP(ctx)[n].data.subform.parent = ctx->cur_container;
adamc@760	1028 ctx->cur_container = &INP(ctx)[n];
adamc@756	1029 return;
adamc@756	1030 default:
adamc@756	1031 uw_error(ctx, FATAL, "Impossible input kind");
adamc@756	1032 }
adamc@756	1033 }
adamc@756	1034
adamc@756	1035 void uw_leave_subform(uw_context ctx) {
adamc@756	1036 input *tmp;
adamc@756	1037
adamc@759	1038 if (ctx->cur_container == NULL)
adamc@756	1039 uw_error(ctx, FATAL, "Unmatched uw_leave_subform");
adamc@756	1040
adamc@759	1041 tmp = ctx->cur_container;
adamc@759	1042 ctx->cur_container = tmp->data.subform.parent;
adamc@759	1043 tmp->data.subform.parent = NULL;
adamc@759	1044 }
adamc@759	1045
adamc@759	1046 int uw_enter_subforms(uw_context ctx, int n) {
adamc@759	1047 input *inps;
adamc@759	1048
adamc@759	1049 if (n < 0)
adamc@759	1050 uw_error(ctx, FATAL, "Negative subforms index %d", n);
adamc@1094	1051 if (n >= ctx->app->inputs_len)
adamc@759	1052 uw_error(ctx, FATAL, "Out-of-bounds subforms index %d", n);
adamc@759	1053
adamc@759	1054 switch (INP(ctx)[n].kind) {
adamc@759	1055 case UNSET:
adamc@759	1056 uw_error(ctx, FATAL, "Missing subforms");
adamc@759	1057 case FIL:
adamc@759	1058 uw_error(ctx, FATAL, "Tried to read a file form input as subforms");
adamc@759	1059 case NORMAL:
adamc@759	1060 uw_error(ctx, FATAL, "Tried to read a normal form input %p as subforms", &INP(ctx)[n]);
adamc@759	1061 case SUBFORM:
adamc@759	1062 uw_error(ctx, FATAL, "Tried to read a subform form input as subforms");
adamc@759	1063 case ENTRY:
adamc@759	1064 uw_error(ctx, FATAL, "Tried to read an entry form input as subforms");
adamc@759	1065 case SUBFORMS:
adamc@759	1066 inps = INP(ctx)[n].data.subforms.entries;
adamc@759	1067 if (inps) {
adamc@759	1068 INP(ctx)[n].data.subforms.parent = ctx->cur_container;
adamc@759	1069 ctx->cur_container = INP(ctx)[n].data.subforms.entries;
adamc@759	1070 return 1;
adamc@759	1071 } else
adamc@759	1072 return 0;
adamc@759	1073 default:
adamc@759	1074 uw_error(ctx, FATAL, "Impossible input kind");
adamc@759	1075 }
adamc@759	1076 }
adamc@759	1077
adamc@759	1078 int uw_next_entry(uw_context ctx) {
adamc@759	1079 if (ctx->cur_container == NULL)
adamc@759	1080 uw_error(ctx, FATAL, "uw_next_entry(NULL)");
adamc@759	1081
adamc@759	1082 switch (ctx->cur_container->kind) {
adamc@759	1083 case UNSET:
adamc@759	1084 uw_error(ctx, FATAL, "Missing entry");
adamc@759	1085 case FIL:
adamc@759	1086 uw_error(ctx, FATAL, "Tried to read a file form input as entry");
adamc@759	1087 case NORMAL:
adamc@759	1088 uw_error(ctx, FATAL, "Tried to read a normal form input as entry");
adamc@759	1089 case SUBFORM:
adamc@759	1090 uw_error(ctx, FATAL, "Tried to read a subform form input as entry");
adamc@759	1091 case SUBFORMS:
adamc@759	1092 uw_error(ctx, FATAL, "Tried to read a subforms form input as entry");
adamc@759	1093 case ENTRY:
adamc@759	1094 if (ctx->cur_container->data.entry.next) {
adamc@759	1095 ctx->cur_container = ctx->cur_container->data.entry.next;
adamc@759	1096 return 1;
adamc@759	1097 } else {
adamc@759	1098 ctx->cur_container = ctx->cur_container->data.entry.parent->data.subforms.parent;
adamc@759	1099 return 0;
adamc@759	1100 }
adamc@759	1101 default:
adamc@759	1102 uw_error(ctx, FATAL, "Impossible input kind");
adamc@759	1103 }
adamc@756	1104 }
adamc@756	1105
adamc@643	1106 void uw_set_script_header(uw_context ctx, const char *s) {
adamc@643	1107 ctx->script_header = s;
adamc@643	1108 }
adamc@643	1109
adamc@1094	1110 const char *uw_get_url_prefix(uw_context ctx) {
adamc@1094	1111 return ctx->app->url_prefix;
adamc@667	1112 }
adamc@667	1113
adamc@693	1114 void uw_set_needs_push(uw_context ctx, int n) {
adamc@693	1115 ctx->needs_push = n;
adamc@693	1116 }
adamc@693	1117
adamc@736	1118 void uw_set_needs_sig(uw_context ctx, int n) {
adamc@736	1119 ctx->needs_sig = n;
adamc@736	1120 }
adamc@736	1121
adamc@667	1122
adamc@1113	1123 static void buf_check_ctx(uw_context ctx, const char kind, buf b, size_t extra, const char *desc) {
adamc@666	1124 if (b->back - b->front < extra) {
adamc@666	1125 size_t desired = b->front - b->start + extra, next;
adamc@136	1126 char *new_heap;
adamc@136	1127
adamc@666	1128 next = b->back - b->start;
adamc@317	1129 if (next == 0)
adamc@317	1130 next = 1;
adamc@317	1131 for (; next < desired; next *= 2);
adamc@136	1132
adamc@1113	1133 if (next > b->max)
adamc@1113	1134 if (desired <= b->max)
adamc@1113	1135 next = desired;
adamc@1113	1136 else
adamc@1113	1137 uw_error(ctx, FATAL, "Memory limit exceeded (%s)", kind);
adamc@1113	1138
adamc@666	1139 new_heap = realloc(b->start, next);
adamc@666	1140 b->front = new_heap + (b->front - b->start);
adamc@666	1141 b->back = new_heap + next;
adamc@136	1142
adamc@667	1143 if (new_heap != b->start) {
adamc@666	1144 b->start = new_heap;
adamc@666	1145 uw_error(ctx, UNLIMITED_RETRY, "Couldn't allocate new %s contiguously", desc);
adamc@136	1146 }
adamc@136	1147
adamc@666	1148 b->start = new_heap;
adamc@136	1149 }
adamc@136	1150 }
adamc@136	1151
adamc@832	1152 void uw_check_heap(uw_context ctx, size_t extra) {
adamc@1113	1153 buf_check_ctx(ctx, "heap", &ctx->heap, extra, "heap chunk");
adamc@666	1154 }
adamc@666	1155
adamc@832	1156 char *uw_heap_front(uw_context ctx) {
adamc@832	1157 return ctx->heap.front;
adamc@832	1158 }
adamc@832	1159
adamc@832	1160 void uw_set_heap_front(uw_context ctx, char *fr) {
adamc@832	1161 ctx->heap.front = fr;
adamc@832	1162 }
adamc@832	1163
adamc@311	1164 void *uw_malloc(uw_context ctx, size_t len) {
adamc@136	1165 void *result;
adamc@136	1166
adamc@311	1167 uw_check_heap(ctx, len);
adamc@136	1168
adamc@666	1169 result = ctx->heap.front;
adamc@666	1170 ctx->heap.front += len;
adamc@136	1171 return result;
adamc@117	1172 }
adamc@117	1173
adamc@323	1174 void uw_begin_region(uw_context ctx) {
adamc@666	1175 regions r = (regions ) ctx->heap.front;
adamc@323	1176
adamc@323	1177 uw_check_heap(ctx, sizeof(regions));
adamc@323	1178
adamc@666	1179 ctx->heap.front += sizeof(regions);
adamc@323	1180
adamc@323	1181 r->next = ctx->regions;
adamc@323	1182 ctx->regions = r;
adamc@323	1183 }
adamc@323	1184
adamc@323	1185 void uw_end_region(uw_context ctx) {
adamc@323	1186 regions *r = ctx->regions;
adamc@323	1187
adamc@323	1188 if (r == NULL)
adamc@323	1189 uw_error(ctx, FATAL, "Region stack underflow");
adamc@323	1190
adamc@666	1191 ctx->heap.front = (char *) r;
adamc@323	1192 ctx->regions = r->next;
adamc@323	1193 }
adamc@323	1194
adamc@324	1195 void uw_memstats(uw_context ctx) {
adamc@666	1196 printf("Headers: %d/%d\n", buf_used(&ctx->outHeaders), buf_avail(&ctx->outHeaders));
adamc@666	1197 printf("Script: %d/%d\n", buf_used(&ctx->script), buf_avail(&ctx->script));
adamc@666	1198 printf("Page: %d/%d\n", buf_used(&ctx->page), buf_avail(&ctx->page));
adamc@666	1199 printf("Heap: %d/%d\n", buf_used(&ctx->heap), buf_avail(&ctx->heap));
adamc@324	1200 }
adamc@324	1201
adamc@311	1202 int uw_send(uw_context ctx, int sock) {
adamc@666	1203 int n = uw_really_send(sock, ctx->outHeaders.start, ctx->outHeaders.front - ctx->outHeaders.start);
adamc@462	1204
adamc@462	1205 if (n < 0)
adamc@462	1206 return n;
adamc@462	1207
adamc@462	1208 n = uw_really_send(sock, "\r\n", 2);
adamc@462	1209
adamc@462	1210 if (n < 0)
adamc@462	1211 return n;
adamc@462	1212
adamc@666	1213 return uw_really_send(sock, ctx->page.start, ctx->page.front - ctx->page.start);
adamc@462	1214 }
adamc@462	1215
adamc@856	1216 int uw_print(uw_context ctx, int fd) {
adamc@856	1217 int n = uw_really_write(fd, ctx->outHeaders.start, ctx->outHeaders.front - ctx->outHeaders.start);
adamc@856	1218
adamc@856	1219 if (n < 0)
adamc@856	1220 return n;
adamc@856	1221
adamc@856	1222 n = uw_really_write(fd, "\r\n", 2);
adamc@856	1223
adamc@856	1224 if (n < 0)
adamc@856	1225 return n;
adamc@856	1226
adamc@856	1227 return uw_really_write(fd, ctx->page.start, ctx->page.front - ctx->page.start);
adamc@856	1228 }
adamc@856	1229
adamc@860	1230 int uw_output(uw_context ctx, int (output)(void data, char buf, size_t len), void data) {
adamc@860	1231 int n = output(data, ctx->outHeaders.start, ctx->outHeaders.front - ctx->outHeaders.start);
adamc@860	1232
adamc@860	1233 if (n < 0)
adamc@860	1234 return n;
adamc@860	1235
adamc@860	1236 n = output(data, "\r\n", 2);
adamc@860	1237
adamc@860	1238 if (n < 0)
adamc@860	1239 return n;
adamc@860	1240
adamc@860	1241 return output(data, ctx->page.start, ctx->page.front - ctx->page.start);
adamc@860	1242 }
adamc@860	1243
adamc@462	1244 static void uw_check_headers(uw_context ctx, size_t extra) {
adamc@1113	1245 ctx_buf_check(ctx, "headers", &ctx->outHeaders, extra);
adamc@462	1246 }
adamc@462	1247
adamc@462	1248 void uw_write_header(uw_context ctx, uw_Basis_string s) {
adamc@462	1249 int len = strlen(s);
adamc@462	1250
adamc@462	1251 uw_check_headers(ctx, len + 1);
adamc@666	1252 strcpy(ctx->outHeaders.front, s);
adamc@666	1253 ctx->outHeaders.front += len;
adamc@562	1254 }
adamc@562	1255
adamc@1110	1256 void uw_clear_headers(uw_context ctx) {
adamc@1110	1257 buf_reset(&ctx->outHeaders);
adamc@1110	1258 }
adamc@1110	1259
adamc@562	1260 static void uw_check_script(uw_context ctx, size_t extra) {
adamc@1113	1261 ctx_buf_check(ctx, "script", &ctx->script, extra);
adamc@562	1262 }
adamc@562	1263
adamc@562	1264 void uw_write_script(uw_context ctx, uw_Basis_string s) {
adamc@562	1265 int len = strlen(s);
adamc@562	1266
adamc@562	1267 uw_check_script(ctx, len + 1);
adamc@666	1268 strcpy(ctx->script.front, s);
adamc@666	1269 ctx->script.front += len;
adamc@562	1270 }
adamc@562	1271
adamc@645	1272 const char *uw_Basis_get_script(uw_context ctx, uw_unit u) {
adamc@916	1273 return "<sc>";
adamc@565	1274 }
adamc@565	1275
adamc@695	1276 uw_Basis_string uw_Basis_maybe_onload(uw_context ctx, uw_Basis_string s) {
adamc@695	1277 if (s[0] == 0)
adamc@695	1278 return "";
adamc@695	1279 else {
adamc@695	1280 char *r = uw_malloc(ctx, 11 + strlen(s));
adamc@695	1281 sprintf(r, " onload='%s'", s);
adamc@695	1282 return r;
adamc@695	1283 }
adamc@695	1284 }
adamc@695	1285
adamc@1042	1286 uw_Basis_string uw_Basis_maybe_onunload(uw_context ctx, uw_Basis_string s) {
adamc@1042	1287 if (ctx->script_header[0] == 0)
adamc@1042	1288 return "";
adamc@1042	1289 else {
adamc@1042	1290 char *r = uw_malloc(ctx, 22 + strlen(s));
adamc@1042	1291 sprintf(r, " onunload='unload();%s'", s);
adamc@1042	1292 return r;
adamc@1042	1293 }
adamc@1042	1294 }
adamc@1042	1295
adamc@694	1296 const char *uw_Basis_get_settings(uw_context ctx, uw_unit u) {
adamc@736	1297 if (ctx->client == NULL) {
adamc@736	1298 if (ctx->needs_sig) {
adamc@1094	1299 char *sig = ctx->app->cookie_sig(ctx);
adamc@736	1300 char *r = uw_malloc(ctx, strlen(sig) + 8);
adamc@736	1301 sprintf(r, "sig=\"%s\";", sig);
adamc@736	1302 return r;
adamc@736	1303 }
adamc@736	1304 else
adamc@736	1305 return "";
adamc@736	1306 } else {
adamc@1094	1307 char *sig = ctx->needs_sig ? ctx->app->cookie_sig(ctx) : "";
adamc@1094	1308 char r = uw_malloc(ctx, 59 + 3 INTS_MAX + strlen(ctx->app->url_prefix)
adamc@736	1309 + (ctx->needs_sig ? strlen(sig) + 7 : 0));
adamc@736	1310 sprintf(r, "client_id=%u;client_pass=%d;url_prefix=\"%s\";timeout=%d;%s%s%slistener();",
adamc@682	1311 ctx->client->id,
adamc@682	1312 ctx->client->pass,
adamc@1094	1313 ctx->app->url_prefix,
adamc@1094	1314 ctx->app->timeout,
adamc@736	1315 ctx->needs_sig ? "sig=\"" : "",
adamc@736	1316 sig,
adamc@736	1317 ctx->needs_sig ? "\";" : "");
adamc@679	1318 return r;
adamc@668	1319 }
adamc@667	1320 }
adamc@667	1321
adamc@574	1322 uw_Basis_string uw_Basis_jsifyString(uw_context ctx, uw_Basis_string s) {
adamc@574	1323 char r, s2;
adamc@574	1324
adamc@574	1325 uw_check_heap(ctx, strlen(s) * 4 + 2);
adamc@574	1326
adamc@666	1327 r = s2 = ctx->heap.front;
adamc@574	1328 *s2++ = '"';
adamc@574	1329
adamc@574	1330 for (; *s; s++) {
adamc@574	1331 char c = *s;
adamc@574	1332
adamc@574	1333 switch (c) {
adamc@574	1334 case '"':
adamc@574	1335 strcpy(s2, "\\\"");
adamc@574	1336 s2 += 2;
adamc@574	1337 break;
adamc@1027	1338 case '\'':
adamc@1027	1339 strcpy(s2, "\\047");
adamc@1027	1340 s2 += 4;
adamc@1027	1341 break;
adamc@574	1342 case '\\':
adamc@574	1343 strcpy(s2, "\\\\");
adamc@574	1344 s2 += 2;
adamc@574	1345 break;
adamc@574	1346 default:
adamc@574	1347 if (isprint(c))
adamc@574	1348 *s2++ = c;
adamc@574	1349 else {
adamc@574	1350 sprintf(s2, "\\%3o", c);
adamc@574	1351 s2 += 4;
adamc@574	1352 }
adamc@574	1353 }
adamc@574	1354 }
adamc@574	1355
adamc@574	1356 strcpy(s2, "\"");
adamc@910	1357 ctx->heap.front = s2 + 2;
adamc@574	1358 return r;
adamc@574	1359 }
adamc@574	1360
adamc@1025	1361 uw_Basis_string uw_Basis_jsifyChar(uw_context ctx, uw_Basis_char c) {
adamc@1025	1362 char r, s2;
adamc@1025	1363
adamc@1025	1364 uw_check_heap(ctx, 6);
adamc@1025	1365
adamc@1025	1366 r = s2 = ctx->heap.front;
adamc@1025	1367 *s2++ = '"';
adamc@1025	1368
adamc@1025	1369 switch (c) {
adamc@1025	1370 case '"':
adamc@1025	1371 strcpy(s2, "\\\"");
adamc@1025	1372 s2 += 2;
adamc@1025	1373 break;
adamc@1027	1374 case '\'':
adamc@1027	1375 strcpy(s2, "\\047");
adamc@1027	1376 s2 += 4;
adamc@1027	1377 break;
adamc@1025	1378 case '\\':
adamc@1025	1379 strcpy(s2, "\\\\");
adamc@1025	1380 s2 += 2;
adamc@1025	1381 break;
adamc@1025	1382 default:
adamc@1025	1383 if (isprint(c))
adamc@1025	1384 *s2++ = c;
adamc@1025	1385 else {
adamc@1025	1386 sprintf(s2, "\\%3o", c);
adamc@1025	1387 s2 += 4;
adamc@1025	1388 }
adamc@1025	1389 }
adamc@1025	1390
adamc@1025	1391 strcpy(s2, "\"");
adamc@1025	1392 ctx->heap.front = s2 + 2;
adamc@1025	1393 return r;
adamc@1025	1394 }
adamc@1025	1395
adamc@574	1396 uw_Basis_string uw_Basis_jsifyString_ws(uw_context ctx, uw_Basis_string s) {
adamc@574	1397 char r, s2;
adamc@574	1398
adamc@574	1399 uw_check_script(ctx, strlen(s) * 4 + 2);
adamc@574	1400
adamc@666	1401 r = s2 = ctx->script.front;
adamc@574	1402 *s2++ = '"';
adamc@574	1403
adamc@574	1404 for (; *s; s++) {
adamc@574	1405 char c = *s;
adamc@574	1406
adamc@574	1407 switch (c) {
adamc@577	1408 case '\'':
adamc@1027	1409 strcpy(s2, "\\");
adamc@574	1410 s2 += 2;
adamc@574	1411 break;
adamc@574	1412 case '\\':
adamc@574	1413 strcpy(s2, "\\\\");
adamc@574	1414 s2 += 2;
adamc@574	1415 break;
adamc@574	1416 default:
adamc@574	1417 if (isprint(c))
adamc@574	1418 *s2++ = c;
adamc@574	1419 else {
adamc@574	1420 sprintf(s2, "\\%3o", c);
adamc@574	1421 s2 += 4;
adamc@574	1422 }
adamc@574	1423 }
adamc@574	1424 }
adamc@574	1425
adamc@574	1426 strcpy(s2, "\"");
adamc@666	1427 ctx->script.front = s2 + 1;
adamc@574	1428 return r;
adamc@574	1429 }
adamc@574	1430
adamc@682	1431 char *uw_Basis_jsifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	1432 if (ctx->client == NULL \|\| chn.cli != ctx->client->id)
adamc@682	1433 return "null";
adamc@682	1434 else {
adamc@682	1435 int len;
adamc@682	1436 char *r;
adamc@682	1437
adamc@682	1438 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	1439 r = ctx->heap.front;
adamc@682	1440 sprintf(r, "%u%n", chn.chn, &len);
adamc@682	1441 ctx->heap.front += len+1;
adamc@682	1442 return r;
adamc@682	1443 }
adamc@682	1444 }
adamc@682	1445
adamc@577	1446 uw_Basis_int uw_Basis_new_client_source(uw_context ctx, uw_Basis_string s) {
adamc@577	1447 int len;
adamc@577	1448 size_t s_len = strlen(s);
adamc@562	1449
adamc@970	1450 uw_check_script(ctx, 18 + INTS_MAX + s_len);
adamc@970	1451 sprintf(ctx->script.front, "var s%d=sc(exec(%n", ctx->source_count, &len);
adamc@666	1452 ctx->script.front += len;
adamc@666	1453 strcpy(ctx->script.front, s);
adamc@666	1454 ctx->script.front += s_len;
adamc@970	1455 strcpy(ctx->script.front, "));");
adamc@972	1456 ctx->script.front += 3;
adamc@562	1457
adamc@565	1458 return ctx->source_count++;
adamc@117	1459 }
adamc@117	1460
adamc@577	1461 uw_unit uw_Basis_set_client_source(uw_context ctx, uw_Basis_int n, uw_Basis_string s) {
adamc@577	1462 int len;
adamc@577	1463 size_t s_len = strlen(s);
adamc@577	1464
adamc@970	1465 uw_check_script(ctx, 12 + INTS_MAX + s_len);
adamc@970	1466 sprintf(ctx->script.front, "sv(s%d,exec(%n", (int)n, &len);
adamc@666	1467 ctx->script.front += len;
adamc@666	1468 strcpy(ctx->script.front, s);
adamc@666	1469 ctx->script.front += s_len;
adamc@970	1470 strcpy(ctx->script.front, "));");
adamc@972	1471 ctx->script.front += 3;
adamc@577	1472
adamc@577	1473 return uw_unit_v;
adamc@577	1474 }
adamc@577	1475
adamc@311	1476 static void uw_check(uw_context ctx, size_t extra) {
adamc@1113	1477 ctx_buf_check(ctx, "page", &ctx->page, extra);
adamc@117	1478 }
adamc@117	1479
adamc@311	1480 static void uw_writec_unsafe(uw_context ctx, char c) {
adamc@666	1481 *(ctx->page.front)++ = c;
adamc@117	1482 }
adamc@117	1483
adamc@311	1484 void uw_writec(uw_context ctx, char c) {
adamc@311	1485 uw_check(ctx, 1);
adamc@311	1486 uw_writec_unsafe(ctx, c);
adamc@117	1487 }
adamc@117	1488
adamc@311	1489 static void uw_write_unsafe(uw_context ctx, const char* s) {
adamc@117	1490 int len = strlen(s);
adamc@666	1491 memcpy(ctx->page.front, s, len);
adamc@666	1492 ctx->page.front += len;
adamc@117	1493 }
adamc@117	1494
adamc@311	1495 void uw_write(uw_context ctx, const char* s) {
adamc@311	1496 uw_check(ctx, strlen(s) + 1);
adamc@311	1497 uw_write_unsafe(ctx, s);
adamc@666	1498 *ctx->page.front = 0;
adamc@102	1499 }
adamc@106	1500
adamc@311	1501 char *uw_Basis_attrifyInt(uw_context ctx, uw_Basis_int n) {
adamc@136	1502 char *result;
adamc@136	1503 int len;
adamc@311	1504 uw_check_heap(ctx, INTS_MAX);
adamc@666	1505 result = ctx->heap.front;
adamc@276	1506 sprintf(result, "%lld%n", n, &len);
adamc@666	1507 ctx->heap.front += len+1;
adamc@136	1508 return result;
adamc@106	1509 }
adamc@106	1510
adamc@311	1511 char *uw_Basis_attrifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@136	1512 char *result;
adamc@136	1513 int len;
adamc@311	1514 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	1515 result = ctx->heap.front;
adamc@136	1516 sprintf(result, "%g%n", n, &len);
adamc@666	1517 ctx->heap.front += len+1;
adamc@136	1518 return result;
adamc@106	1519 }
adamc@106	1520
adamc@1054	1521 static int isCont(unsigned char ch) {
adamc@1054	1522 return ch / 64 == 2;
adamc@1054	1523 }
adamc@1054	1524
adamc@311	1525 char *uw_Basis_attrifyString(uw_context ctx, uw_Basis_string s) {
adamc@136	1526 int len = strlen(s);
adamc@136	1527 char result, p;
adamc@311	1528 uw_check_heap(ctx, len * 6 + 1);
adamc@136	1529
adamc@666	1530 result = p = ctx->heap.front;
adamc@136	1531
adamc@136	1532 for (; *s; s++) {
adamc@1054	1533 unsigned char c = *s;
adamc@136	1534
adamc@136	1535 if (c == '"') {
adamc@136	1536 strcpy(p, """);
adamc@136	1537 p += 6;
adamc@136	1538 } else if (c == '&') {
adamc@136	1539 strcpy(p, "&");
adamc@136	1540 p += 5;
adamc@136	1541 }
adamc@1059	1542 else
adamc@136	1543 *p++ = c;
adamc@136	1544 }
adamc@136	1545
adamc@137	1546 *p++ = 0;
adamc@666	1547 ctx->heap.front = p;
adamc@136	1548 return result;
adamc@106	1549 }
adamc@106	1550
adamc@1011	1551 char *uw_Basis_attrifyChar(uw_context ctx, uw_Basis_char c) {
adamc@1011	1552 char result, p;
adamc@1011	1553 uw_check_heap(ctx, 7);
adamc@1011	1554
adamc@1011	1555 result = p = ctx->heap.front;
adamc@1011	1556
adamc@1011	1557 if (c == '"') {
adamc@1011	1558 strcpy(p, """);
adamc@1011	1559 p += 6;
adamc@1011	1560 } else if (c == '&') {
adamc@1011	1561 strcpy(p, "&");
adamc@1011	1562 p += 5;
adamc@1011	1563 }
adamc@1059	1564 else
adamc@1011	1565 *p++ = c;
adamc@1011	1566
adamc@1011	1567 *p++ = 0;
adamc@1011	1568 ctx->heap.front = p;
adamc@1011	1569 return result;
adamc@1011	1570 }
adamc@1011	1571
adamc@721	1572 char *uw_Basis_attrifyCss_class(uw_context ctx, uw_Basis_css_class s) {
adamc@721	1573 return s;
adamc@721	1574 }
adamc@721	1575
adamc@311	1576 static void uw_Basis_attrifyInt_w_unsafe(uw_context ctx, uw_Basis_int n) {
adamc@117	1577 int len;
adamc@117	1578
adamc@666	1579 sprintf(ctx->page.front, "%lld%n", n, &len);
adamc@666	1580 ctx->page.front += len;
adamc@106	1581 }
adamc@106	1582
adamc@428	1583 uw_unit uw_Basis_attrifyInt_w(uw_context ctx, uw_Basis_int n) {
adamc@311	1584 uw_check(ctx, INTS_MAX);
adamc@311	1585 uw_Basis_attrifyInt_w_unsafe(ctx, n);
adamc@428	1586
adamc@428	1587 return uw_unit_v;
adamc@106	1588 }
adamc@106	1589
adamc@428	1590 uw_unit uw_Basis_attrifyFloat_w(uw_context ctx, uw_Basis_float n) {
adamc@117	1591 int len;
adamc@117	1592
adamc@311	1593 uw_check(ctx, FLOATS_MAX);
adamc@666	1594 sprintf(ctx->page.front, "%g%n", n, &len);
adamc@666	1595 ctx->page.front += len;
adamc@428	1596
adamc@428	1597 return uw_unit_v;
adamc@117	1598 }
adamc@117	1599
adamc@428	1600 uw_unit uw_Basis_attrifyString_w(uw_context ctx, uw_Basis_string s) {
adamc@311	1601 uw_check(ctx, strlen(s) * 6);
adamc@117	1602
adamc@106	1603 for (; *s; s++) {
adamc@1054	1604 unsigned char c = *s;
adamc@106	1605
adamc@106	1606 if (c == '"')
adamc@311	1607 uw_write_unsafe(ctx, """);
adamc@136	1608 else if (c == '&')
adamc@311	1609 uw_write_unsafe(ctx, "&");
adamc@1059	1610 else
adamc@311	1611 uw_writec_unsafe(ctx, c);
adamc@106	1612 }
adamc@428	1613
adamc@428	1614 return uw_unit_v;
adamc@106	1615 }
adamc@120	1616
adamc@1011	1617 uw_unit uw_Basis_attrifyChar_w(uw_context ctx, uw_Basis_char c) {
adamc@1011	1618 uw_check(ctx, 6);
adamc@1011	1619
adamc@1011	1620 if (c == '"')
adamc@1011	1621 uw_write_unsafe(ctx, """);
adamc@1011	1622 else if (c == '&')
adamc@1011	1623 uw_write_unsafe(ctx, "&");
adamc@1059	1624 else
adamc@1011	1625 uw_writec_unsafe(ctx, c);
adamc@1011	1626
adamc@1011	1627 return uw_unit_v;
adamc@1011	1628 }
adamc@1011	1629
adamc@120	1630
adamc@311	1631 char *uw_Basis_urlifyInt(uw_context ctx, uw_Basis_int n) {
adamc@137	1632 int len;
adamc@137	1633 char *r;
adamc@137	1634
adamc@311	1635 uw_check_heap(ctx, INTS_MAX);
adamc@666	1636 r = ctx->heap.front;
adamc@276	1637 sprintf(r, "%lld%n", n, &len);
adamc@666	1638 ctx->heap.front += len+1;
adamc@137	1639 return r;
adamc@120	1640 }
adamc@120	1641
adamc@682	1642 char *uw_Basis_urlifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	1643 if (ctx->client == NULL \|\| chn.cli != ctx->client->id)
adamc@682	1644 return "";
adamc@682	1645 else {
adamc@682	1646 int len;
adamc@682	1647 char *r;
adamc@679	1648
adamc@682	1649 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	1650 r = ctx->heap.front;
adamc@682	1651 sprintf(r, "%u%n", chn.chn, &len);
adamc@682	1652 ctx->heap.front += len+1;
adamc@682	1653 return r;
adamc@682	1654 }
adamc@679	1655 }
adamc@679	1656
adamc@311	1657 char *uw_Basis_urlifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@137	1658 int len;
adamc@137	1659 char *r;
adamc@137	1660
adamc@311	1661 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	1662 r = ctx->heap.front;
adamc@137	1663 sprintf(r, "%g%n", n, &len);
adamc@666	1664 ctx->heap.front += len+1;
adamc@137	1665 return r;
adamc@120	1666 }
adamc@120	1667
adamc@311	1668 char *uw_Basis_urlifyString(uw_context ctx, uw_Basis_string s) {
adamc@137	1669 char r, p;
adamc@137	1670
adamc@925	1671 if (s[0] == '\0')
adamc@925	1672 return "_";
adamc@925	1673
adamc@925	1674 uw_check_heap(ctx, strlen(s) * 3 + 1 + !!(s[0] == '_'));
adamc@925	1675
adamc@925	1676 r = p = ctx->heap.front;
adamc@925	1677 if (s[0] == '_')
adamc@925	1678 *p++ = '_';
adamc@925	1679
adamc@925	1680 for (; *s; s++) {
adamc@1087	1681 unsigned char c = *s;
adamc@137	1682
adamc@137	1683 if (c == ' ')
adamc@137	1684 *p++ = '+';
adamc@137	1685 else if (isalnum(c))
adamc@137	1686 *p++ = c;
adamc@137	1687 else {
adamc@137	1688 sprintf(p, "%%%02X", c);
adamc@137	1689 p += 3;
adamc@137	1690 }
adamc@137	1691 }
adamc@137	1692
adamc@137	1693 *p++ = 0;
adamc@666	1694 ctx->heap.front = p;
adamc@137	1695 return r;
adamc@120	1696 }
adamc@120	1697
adamc@311	1698 char *uw_Basis_urlifyBool(uw_context ctx, uw_Basis_bool b) {
adamc@311	1699 if (b == uw_Basis_False)
adamc@186	1700 return "0";
adamc@186	1701 else
adamc@186	1702 return "1";
adamc@186	1703 }
adamc@186	1704
adamc@311	1705 static void uw_Basis_urlifyInt_w_unsafe(uw_context ctx, uw_Basis_int n) {
adamc@120	1706 int len;
adamc@120	1707
adamc@666	1708 sprintf(ctx->page.front, "%lld%n", n, &len);
adamc@666	1709 ctx->page.front += len;
adamc@120	1710 }
adamc@120	1711
adamc@428	1712 uw_unit uw_Basis_urlifyInt_w(uw_context ctx, uw_Basis_int n) {
adamc@311	1713 uw_check(ctx, INTS_MAX);
adamc@311	1714 uw_Basis_urlifyInt_w_unsafe(ctx, n);
adamc@428	1715
adamc@428	1716 return uw_unit_v;
adamc@120	1717 }
adamc@120	1718
adamc@682	1719 uw_unit uw_Basis_urlifyChannel_w(uw_context ctx, uw_Basis_channel chn) {
adamc@682	1720 if (ctx->client != NULL && chn.cli == ctx->client->id) {
adamc@682	1721 int len;
adamc@682	1722
adamc@682	1723 uw_check(ctx, INTS_MAX + 1);
adamc@682	1724 sprintf(ctx->page.front, "%u%n", chn.chn, &len);
adamc@682	1725 ctx->page.front += len;
adamc@682	1726 }
adamc@682	1727
adamc@679	1728 return uw_unit_v;
adamc@679	1729 }
adamc@679	1730
adamc@428	1731 uw_unit uw_Basis_urlifyFloat_w(uw_context ctx, uw_Basis_float n) {
adamc@120	1732 int len;
adamc@120	1733
adamc@311	1734 uw_check(ctx, FLOATS_MAX);
adamc@666	1735 sprintf(ctx->page.front, "%g%n", n, &len);
adamc@666	1736 ctx->page.front += len;
adamc@428	1737
adamc@428	1738 return uw_unit_v;
adamc@120	1739 }
adamc@120	1740
adamc@488	1741 uw_Basis_string uw_Basis_urlifyTime(uw_context ctx, uw_Basis_time t) {
adamc@488	1742 return uw_Basis_urlifyInt(ctx, t);
adamc@488	1743 }
adamc@488	1744
adamc@428	1745 uw_unit uw_Basis_urlifyString_w(uw_context ctx, uw_Basis_string s) {
adamc@925	1746 if (s[0] == '\0') {
adamc@925	1747 uw_check(ctx, 1);
adamc@925	1748 uw_writec_unsafe(ctx, '_');
adamc@925	1749 return uw_unit_v;
adamc@925	1750 }
adamc@925	1751
adamc@925	1752 uw_check(ctx, strlen(s) * 3 + !!(s[0] == '_'));
adamc@925	1753
adamc@925	1754 if (s[0] == '_')
adamc@925	1755 uw_writec_unsafe(ctx, '_');
adamc@120	1756
adamc@120	1757 for (; *s; s++) {
adamc@1087	1758 unsigned char c = *s;
adamc@120	1759
adamc@120	1760 if (c == ' ')
adamc@311	1761 uw_writec_unsafe(ctx, '+');
adamc@120	1762 else if (isalnum(c))
adamc@311	1763 uw_writec_unsafe(ctx, c);
adamc@120	1764 else {
adamc@666	1765 sprintf(ctx->page.front, "%%%02X", c);
adamc@666	1766 ctx->page.front += 3;
adamc@120	1767 }
adamc@120	1768 }
adamc@428	1769
adamc@428	1770 return uw_unit_v;
adamc@120	1771 }
adamc@120	1772
adamc@428	1773 uw_unit uw_Basis_urlifyBool_w(uw_context ctx, uw_Basis_bool b) {
adamc@311	1774 if (b == uw_Basis_False)
adamc@311	1775 uw_writec(ctx, '0');
adamc@186	1776 else
adamc@311	1777 uw_writec(ctx, '1');
adamc@428	1778
adamc@428	1779 return uw_unit_v;
adamc@186	1780 }
adamc@186	1781
adamc@120	1782
adamc@311	1783 static char uw_unurlify_advance(char s) {
adamc@144	1784 char *new_s = strchr(s, '/');
adamc@120	1785
adamc@120	1786 if (new_s)
adamc@120	1787 *new_s++ = 0;
adamc@120	1788 else
adamc@144	1789 new_s = strchr(s, 0);
adamc@144	1790
adamc@144	1791 return new_s;
adamc@144	1792 }
adamc@144	1793
adamc@311	1794 uw_Basis_int uw_Basis_unurlifyInt(uw_context ctx, char **s) {
adamc@311	1795 char new_s = uw_unurlify_advance(s);
adamc@311	1796 uw_Basis_int r;
adamc@120	1797
adamc@276	1798 r = atoll(*s);
adamc@120	1799 *s = new_s;
adamc@120	1800 return r;
adamc@120	1801 }
adamc@120	1802
adamc@311	1803 uw_Basis_float uw_Basis_unurlifyFloat(uw_context ctx, char **s) {
adamc@311	1804 char new_s = uw_unurlify_advance(s);
adamc@311	1805 uw_Basis_float r;
adamc@120	1806
adamc@120	1807 r = atof(*s);
adamc@120	1808 *s = new_s;
adamc@120	1809 return r;
adamc@120	1810 }
adamc@120	1811
adamc@488	1812 uw_Basis_time uw_Basis_unurlifyTime(uw_context ctx, char **s) {
adamc@488	1813 return uw_Basis_unurlifyInt(ctx, s);
adamc@488	1814 }
adamc@488	1815
adamc@1023	1816 static uw_Basis_string uw_unurlifyString_to(int fromClient, uw_context ctx, char r, char s) {
adamc@927	1817 char s1, s2 = s;
adamc@144	1818 int n;
adamc@136	1819
adamc@1023	1820 if (!fromClient) {
adamc@1023	1821 if (*s2 == '_')
adamc@1023	1822 ++s2;
adamc@1023	1823 else if (s2[0] == '%' && s2[1] == '5' && (s2[2] == 'f' \|\| s2[2] == 'F'))
adamc@1023	1824 s2 += 3;
adamc@1023	1825 }
adamc@925	1826
adamc@927	1827 for (s1 = r; *s2; ++s1, ++s2) {
adamc@1087	1828 unsigned char c = *s2;
adamc@136	1829
adamc@136	1830 switch (c) {
adamc@136	1831 case '+':
adamc@136	1832 *s1 = ' ';
adamc@136	1833 break;
adamc@136	1834 case '%':
adamc@169	1835 if (s2[1] == 0)
adamc@311	1836 uw_error(ctx, FATAL, "Missing first character of escaped URL byte");
adamc@169	1837 if (s2[2] == 0)
adamc@311	1838 uw_error(ctx, FATAL, "Missing second character of escaped URL byte");
adamc@169	1839 if (sscanf(s2+1, "%02X", &n) != 1)
adamc@311	1840 uw_error(ctx, FATAL, "Invalid escaped URL byte starting at: %s", s2);
adamc@136	1841 *s1 = n;
adamc@136	1842 s2 += 2;
adamc@136	1843 break;
adamc@136	1844 default:
adamc@136	1845 *s1 = c;
adamc@136	1846 }
adamc@136	1847 }
adamc@136	1848 *s1++ = 0;
adamc@144	1849 return s1;
adamc@144	1850 }
adamc@144	1851
adamc@311	1852 uw_Basis_bool uw_Basis_unurlifyBool(uw_context ctx, char **s) {
adamc@311	1853 char new_s = uw_unurlify_advance(s);
adamc@311	1854 uw_Basis_bool r;
adamc@186	1855
adamc@186	1856 if (s[0] == 0 \|\| !strcmp(s, "0") \|\| !strcmp(*s, "off"))
adamc@311	1857 r = uw_Basis_False;
adamc@186	1858 else
adamc@311	1859 r = uw_Basis_True;
adamc@186	1860
adamc@186	1861 *s = new_s;
adamc@186	1862 return r;
adamc@186	1863 }
adamc@186	1864
adamc@311	1865 uw_Basis_string uw_Basis_unurlifyString(uw_context ctx, char **s) {
adamc@311	1866 char new_s = uw_unurlify_advance(s);
adamc@144	1867 char r, s1, *s2;
adamc@144	1868 int len, n;
adamc@144	1869
adamc@200	1870 len = strlen(*s);
adamc@311	1871 uw_check_heap(ctx, len + 1);
adamc@144	1872
adamc@666	1873 r = ctx->heap.front;
adamc@1023	1874 ctx->heap.front = uw_unurlifyString_to(0, ctx, ctx->heap.front, *s);
adamc@1023	1875 *s = new_s;
adamc@1023	1876 return r;
adamc@1023	1877 }
adamc@1023	1878
adamc@1109	1879 uw_Basis_unit uw_Basis_unurlifyUnit(uw_context ctx, char **s) {
adamc@1109	1880 s = uw_unurlify_advance(s);
adamc@1109	1881 return uw_unit_v;
adamc@1109	1882 }
adamc@1109	1883
adamc@1023	1884 uw_Basis_string uw_Basis_unurlifyString_fromClient(uw_context ctx, char **s) {
adamc@1023	1885 char new_s = uw_unurlify_advance(s);
adamc@1023	1886 char r, s1, *s2;
adamc@1023	1887 int len, n;
adamc@1023	1888
adamc@1023	1889 len = strlen(*s);
adamc@1023	1890 uw_check_heap(ctx, len + 1);
adamc@1023	1891
adamc@1023	1892 r = ctx->heap.front;
adamc@1023	1893 ctx->heap.front = uw_unurlifyString_to(1, ctx, ctx->heap.front, *s);
adamc@136	1894 *s = new_s;
adamc@136	1895 return r;
adamc@120	1896 }
adamc@135	1897
adamc@135	1898
adamc@311	1899 char *uw_Basis_htmlifyInt(uw_context ctx, uw_Basis_int n) {
adamc@286	1900 int len;
adamc@286	1901 char *r;
adamc@286	1902
adamc@311	1903 uw_check_heap(ctx, INTS_MAX);
adamc@666	1904 r = ctx->heap.front;
adamc@286	1905 sprintf(r, "%lld%n", n, &len);
adamc@666	1906 ctx->heap.front += len+1;
adamc@286	1907 return r;
adamc@286	1908 }
adamc@286	1909
adamc@428	1910 uw_unit uw_Basis_htmlifyInt_w(uw_context ctx, uw_Basis_int n) {
adamc@286	1911 int len;
adamc@286	1912
adamc@311	1913 uw_check(ctx, INTS_MAX);
adamc@666	1914 sprintf(ctx->page.front, "%lld%n", n, &len);
adamc@666	1915 ctx->page.front += len;
adamc@428	1916
adamc@428	1917 return uw_unit_v;
adamc@286	1918 }
adamc@286	1919
adamc@311	1920 char *uw_Basis_htmlifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@286	1921 int len;
adamc@286	1922 char *r;
adamc@286	1923
adamc@311	1924 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	1925 r = ctx->heap.front;
adamc@286	1926 sprintf(r, "%g%n", n, &len);
adamc@666	1927 ctx->heap.front += len+1;
adamc@286	1928 return r;
adamc@286	1929 }
adamc@286	1930
adamc@428	1931 uw_unit uw_Basis_htmlifyFloat_w(uw_context ctx, uw_Basis_float n) {
adamc@286	1932 int len;
adamc@286	1933
adamc@311	1934 uw_check(ctx, FLOATS_MAX);
adamc@666	1935 sprintf(ctx->page.front, "%g%n", n, &len);
adamc@666	1936 ctx->page.front += len;
adamc@428	1937
adamc@428	1938 return uw_unit_v;
adamc@286	1939 }
adamc@286	1940
adamc@311	1941 char *uw_Basis_htmlifyString(uw_context ctx, uw_Basis_string s) {
adamc@137	1942 char r, s2;
adamc@137	1943
adamc@311	1944 uw_check_heap(ctx, strlen(s) * 5 + 1);
adamc@137	1945
adamc@666	1946 for (r = s2 = ctx->heap.front; *s; s++) {
adamc@1054	1947 unsigned char c = *s;
adamc@137	1948
adamc@137	1949 switch (c) {
adamc@137	1950 case '<':
adamc@137	1951 strcpy(s2, "<");
adamc@137	1952 s2 += 4;
adamc@137	1953 break;
adamc@137	1954 case '&':
adamc@137	1955 strcpy(s2, "&");
adamc@137	1956 s2 += 5;
adamc@137	1957 break;
adamc@137	1958 default:
adamc@1059	1959 *s2++ = c;
adamc@137	1960 }
adamc@137	1961 }
adamc@137	1962
adamc@137	1963 *s2++ = 0;
adamc@666	1964 ctx->heap.front = s2;
adamc@137	1965 return r;
adamc@135	1966 }
adamc@135	1967
adamc@428	1968 uw_unit uw_Basis_htmlifyString_w(uw_context ctx, uw_Basis_string s) {
adamc@321	1969 uw_check(ctx, strlen(s) * 6);
adamc@135	1970
adamc@135	1971 for (; *s; s++) {
adamc@1054	1972 unsigned char c = *s;
adamc@135	1973
adamc@135	1974 switch (c) {
adamc@135	1975 case '<':
adamc@311	1976 uw_write_unsafe(ctx, "<");
adamc@135	1977 break;
adamc@135	1978 case '&':
adamc@311	1979 uw_write_unsafe(ctx, "&");
adamc@135	1980 break;
adamc@135	1981 default:
adamc@1059	1982 uw_writec_unsafe(ctx, c);
adamc@135	1983 }
adamc@135	1984 }
adamc@428	1985
adamc@428	1986 return uw_unit_v;
adamc@135	1987 }
adamc@180	1988
adamc@311	1989 uw_Basis_string uw_Basis_htmlifyBool(uw_context ctx, uw_Basis_bool b) {
adamc@311	1990 if (b == uw_Basis_False)
adamc@286	1991 return "False";
adamc@286	1992 else
adamc@286	1993 return "True";
adamc@286	1994 }
adamc@286	1995
adamc@428	1996 uw_unit uw_Basis_htmlifyBool_w(uw_context ctx, uw_Basis_bool b) {
adamc@311	1997 if (b == uw_Basis_False) {
adamc@311	1998 uw_check(ctx, 6);
adamc@666	1999 strcpy(ctx->page.front, "False");
adamc@666	2000 ctx->page.front += 5;
adamc@286	2001 } else {
adamc@311	2002 uw_check(ctx, 5);
adamc@666	2003 strcpy(ctx->page.front, "True");
adamc@666	2004 ctx->page.front += 4;
adamc@286	2005 }
adamc@428	2006
adamc@428	2007 return uw_unit_v;
adamc@286	2008 }
adamc@286	2009
adamc@436	2010 #define TIME_FMT "%x %X"
adamc@438	2011 #define TIME_FMT_PG "%Y-%m-%d %T"
adamc@436	2012
adamc@436	2013 uw_Basis_string uw_Basis_htmlifyTime(uw_context ctx, uw_Basis_time t) {
adamc@436	2014 size_t len;
adamc@436	2015 char *r;
adamc@436	2016 struct tm stm;
adamc@436	2017
adamc@436	2018 if (localtime_r(&t, &stm)) {
adamc@436	2019 uw_check_heap(ctx, TIMES_MAX);
adamc@666	2020 r = ctx->heap.front;
adamc@436	2021 len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
adamc@666	2022 ctx->heap.front += len+1;
adamc@436	2023 return r;
adamc@436	2024 } else
adamc@436	2025 return "<i>Invalid time</i>";
adamc@436	2026 }
adamc@436	2027
adamc@436	2028 uw_unit uw_Basis_htmlifyTime_w(uw_context ctx, uw_Basis_time t) {
adamc@436	2029 size_t len;
adamc@436	2030 char *r;
adamc@436	2031 struct tm stm;
adamc@436	2032
adamc@436	2033 if (localtime_r(&t, &stm)) {
adamc@436	2034 uw_check(ctx, TIMES_MAX);
adamc@666	2035 r = ctx->page.front;
adamc@436	2036 len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
adamc@666	2037 ctx->page.front += len;
adamc@436	2038 } else {
adamc@436	2039 uw_check(ctx, 20);
adamc@666	2040 strcpy(ctx->page.front, "<i>Invalid time</i>");
adamc@666	2041 ctx->page.front += 19;
adamc@436	2042 }
adamc@436	2043
adamc@436	2044 return uw_unit_v;
adamc@436	2045 }
adamc@436	2046
adamc@821	2047 uw_Basis_char uw_Basis_strsub(uw_context ctx, uw_Basis_string s, uw_Basis_int n) {
adamc@821	2048 if (n >= 0 && n < strlen(s))
adamc@821	2049 return s[n];
adamc@821	2050 else
adamc@821	2051 uw_error(ctx, FATAL, "Out-of-bounds strsub");
adamc@821	2052 }
adamc@821	2053
adamc@821	2054 uw_Basis_string uw_Basis_strsuffix(uw_context ctx, uw_Basis_string s, uw_Basis_int n) {
adamc@821	2055 if (n >= 0 && n < strlen(s))
adamc@821	2056 return &s[n];
adamc@821	2057 else
adamc@821	2058 uw_error(ctx, FATAL, "Out-of-bounds strsuffix");
adamc@821	2059 }
adamc@821	2060
adamc@828	2061 uw_Basis_int uw_Basis_strlen(uw_context ctx, uw_Basis_string s) {
adamc@828	2062 return strlen(s);
adamc@828	2063 }
adamc@828	2064
adamc@829	2065 uw_Basis_string uw_Basis_strchr(uw_context ctx, uw_Basis_string s, uw_Basis_char ch) {
adamc@829	2066 return strchr(s, ch);
adamc@829	2067 }
adamc@829	2068
adamc@831	2069 uw_Basis_int uw_Basis_strcspn(uw_context ctx, uw_Basis_string s, uw_Basis_string chs) {
adamc@831	2070 return strcspn(s, chs);
adamc@831	2071 }
adamc@831	2072
adamc@829	2073 uw_Basis_int *uw_Basis_strindex(uw_context ctx, uw_Basis_string s, uw_Basis_char ch) {
adamc@829	2074 uw_Basis_string r = strchr(s, ch);
adamc@829	2075 if (r == NULL)
adamc@829	2076 return NULL;
adamc@829	2077 else {
adamc@829	2078 uw_Basis_int *nr = uw_malloc(ctx, sizeof(uw_Basis_int));
adamc@829	2079 *nr = r - s;
adamc@829	2080 return nr;
adamc@829	2081 }
adamc@829	2082 }
adamc@829	2083
adamc@311	2084 uw_Basis_string uw_Basis_strcat(uw_context ctx, uw_Basis_string s1, uw_Basis_string s2) {
adamc@828	2085 int len = uw_Basis_strlen(ctx, s1) + uw_Basis_strlen(ctx, s2) + 1;
adamc@180	2086 char *s;
adamc@180	2087
adamc@311	2088 uw_check_heap(ctx, len);
adamc@180	2089
adamc@666	2090 s = ctx->heap.front;
adamc@180	2091
adamc@180	2092 strcpy(s, s1);
adamc@180	2093 strcat(s, s2);
adamc@666	2094 ctx->heap.front += len;
adamc@180	2095
adamc@180	2096 return s;
adamc@180	2097 }
adamc@278	2098
adamc@829	2099 uw_Basis_string uw_Basis_substring(uw_context ctx, uw_Basis_string s, uw_Basis_int start, uw_Basis_int len) {
adamc@829	2100 size_t full_len = uw_Basis_strlen(ctx, s);
adamc@829	2101
adamc@829	2102 if (start < 0)
adamc@829	2103 uw_error(ctx, FATAL, "substring: Negative start index");
adamc@829	2104 if (len < 0)
adamc@829	2105 uw_error(ctx, FATAL, "substring: Negative length");
adamc@829	2106 if (start + len > full_len)
adamc@829	2107 uw_error(ctx, FATAL, "substring: Start index plus length is too large");
adamc@829	2108
adamc@829	2109 if (start + len == full_len)
adamc@829	2110 return &s[start];
adamc@829	2111 else {
adamc@829	2112 uw_Basis_string r = uw_malloc(ctx, len+1);
adamc@959	2113 memcpy(r, s+start, len);
adamc@829	2114 r[len] = 0;
adamc@829	2115 return r;
adamc@829	2116 }
adamc@829	2117
adamc@829	2118 }
adamc@829	2119
adamc@1023	2120 uw_Basis_string uw_Basis_str1(uw_context ctx, uw_Basis_char ch) {
adamc@1023	2121 char *r;
adamc@1023	2122
adamc@1023	2123 uw_check_heap(ctx, 2);
adamc@1023	2124 r = ctx->heap.front;
adamc@1023	2125 r[0] = ch;
adamc@1023	2126 r[1] = 0;
adamc@1023	2127
adamc@1023	2128 ctx->heap.front += 2;
adamc@1023	2129
adamc@1023	2130 return r;
adamc@1023	2131 }
adamc@1023	2132
adamc@737	2133 uw_Basis_string uw_strdup(uw_context ctx, uw_Basis_string s1) {
adamc@828	2134 int len = uw_Basis_strlen(ctx, s1) + 1;
adamc@278	2135 char *s;
adamc@278	2136
adamc@311	2137 uw_check_heap(ctx, len);
adamc@278	2138
adamc@666	2139 s = ctx->heap.front;
adamc@278	2140
adamc@278	2141 strcpy(s, s1);
adamc@666	2142 ctx->heap.front += len;
adamc@278	2143
adamc@278	2144 return s;
adamc@278	2145 }
adamc@280	2146
adamc@737	2147 uw_Basis_string uw_maybe_strdup(uw_context ctx, uw_Basis_string s1) {
adamc@493	2148 if (s1)
adamc@737	2149 return uw_strdup(ctx, s1);
adamc@493	2150 else
adamc@493	2151 return NULL;
adamc@493	2152 }
adamc@493	2153
adamc@742	2154 char uw_memdup(uw_context ctx, const char p, size_t len) {
adamc@742	2155 char *r = uw_malloc(ctx, len);
adamc@742	2156 memcpy(r, p, len);
adamc@742	2157 return r;
adamc@742	2158 }
adamc@280	2159
adamc@879	2160 char *uw_sqlfmtInt = "%lld::int8%n";
adamc@879	2161
adamc@311	2162 char *uw_Basis_sqlifyInt(uw_context ctx, uw_Basis_int n) {
adamc@281	2163 int len;
adamc@281	2164 char *r;
adamc@281	2165
adamc@311	2166 uw_check_heap(ctx, INTS_MAX + 6);
adamc@666	2167 r = ctx->heap.front;
adamc@879	2168 sprintf(r, uw_sqlfmtInt, n, &len);
adamc@666	2169 ctx->heap.front += len+1;
adamc@281	2170 return r;
adamc@281	2171 }
adamc@281	2172
adamc@467	2173 char uw_Basis_sqlifyIntN(uw_context ctx, uw_Basis_int n) {
adamc@467	2174 if (n == NULL)
adamc@467	2175 return "NULL";
adamc@467	2176 else
adamc@467	2177 return uw_Basis_sqlifyInt(ctx, *n);
adamc@467	2178 }
adamc@467	2179
adamc@879	2180 char *uw_sqlfmtFloat = "%g::float8%n";
adamc@879	2181
adamc@311	2182 char *uw_Basis_sqlifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@281	2183 int len;
adamc@281	2184 char *r;
adamc@281	2185
adamc@311	2186 uw_check_heap(ctx, FLOATS_MAX + 8);
adamc@666	2187 r = ctx->heap.front;
adamc@879	2188 sprintf(r, uw_sqlfmtFloat, n, &len);
adamc@666	2189 ctx->heap.front += len+1;
adamc@281	2190 return r;
adamc@281	2191 }
adamc@281	2192
adamc@467	2193 char uw_Basis_sqlifyFloatN(uw_context ctx, uw_Basis_float n) {
adamc@467	2194 if (n == NULL)
adamc@467	2195 return "NULL";
adamc@467	2196 else
adamc@467	2197 return uw_Basis_sqlifyFloat(ctx, *n);
adamc@467	2198 }
adamc@467	2199
adamc@879	2200 int uw_Estrings = 1;
adamc@879	2201 char *uw_sqlsuffixString = "::text";
adamc@1011	2202 char *uw_sqlsuffixChar = "::char";
adamc@281	2203
adamc@311	2204 uw_Basis_string uw_Basis_sqlifyString(uw_context ctx, uw_Basis_string s) {
adamc@280	2205 char r, s2;
adamc@280	2206
adamc@879	2207 uw_check_heap(ctx, strlen(s) * 2 + 3 + uw_Estrings + strlen(uw_sqlsuffixString));
adamc@280	2208
adamc@666	2209 r = s2 = ctx->heap.front;
adamc@879	2210 if (uw_Estrings)
adamc@879	2211 *s2++ = 'E';
adamc@280	2212 *s2++ = '\'';
adamc@280	2213
adamc@280	2214 for (; *s; s++) {
adamc@280	2215 char c = *s;
adamc@280	2216
adamc@280	2217 switch (c) {
adamc@280	2218 case '\'':
adamc@885	2219 if (uw_Estrings)
adamc@885	2220 strcpy(s2, "\\'");
adamc@885	2221 else
adamc@885	2222 strcpy(s2, "''");
adamc@280	2223 s2 += 2;
adamc@280	2224 break;
adamc@280	2225 case '\\':
adamc@885	2226 if (uw_Estrings) {
adamc@885	2227 strcpy(s2, "\\\\");
adamc@885	2228 s2 += 2;
adamc@885	2229 } else
adamc@885	2230 *s2++ = '\\';
adamc@280	2231 break;
adamc@280	2232 default:
adamc@280	2233 if (isprint(c))
adamc@280	2234 *s2++ = c;
adamc@879	2235 else if (uw_Estrings) {
adamc@737	2236 sprintf(s2, "\\%03o", c);
adamc@280	2237 s2 += 4;
adamc@280	2238 }
adamc@879	2239 else
adamc@879	2240 uw_error(ctx, FATAL, "Non-printable character %u in string to SQLify", c);
adamc@280	2241 }
adamc@280	2242 }
adamc@280	2243
adamc@879	2244 *s2++ = '\'';
adamc@879	2245 strcpy(s2, uw_sqlsuffixString);
adamc@879	2246 ctx->heap.front = s2 + 1 + strlen(uw_sqlsuffixString);
adamc@280	2247 return r;
adamc@280	2248 }
adamc@281	2249
adamc@1011	2250 uw_Basis_string uw_Basis_sqlifyChar(uw_context ctx, uw_Basis_char c) {
adamc@1011	2251 char r, s2;
adamc@1011	2252
adamc@1011	2253 uw_check_heap(ctx, 5 + uw_Estrings + strlen(uw_sqlsuffixChar));
adamc@1011	2254
adamc@1011	2255 r = s2 = ctx->heap.front;
adamc@1011	2256 if (uw_Estrings)
adamc@1011	2257 *s2++ = 'E';
adamc@1011	2258 *s2++ = '\'';
adamc@1011	2259
adamc@1011	2260 switch (c) {
adamc@1011	2261 case '\'':
adamc@1011	2262 if (uw_Estrings)
adamc@1011	2263 strcpy(s2, "\\'");
adamc@1011	2264 else
adamc@1011	2265 strcpy(s2, "''");
adamc@1011	2266 s2 += 2;
adamc@1011	2267 break;
adamc@1011	2268 case '\\':
adamc@1011	2269 if (uw_Estrings) {
adamc@1011	2270 strcpy(s2, "\\\\");
adamc@1011	2271 s2 += 2;
adamc@1011	2272 } else
adamc@1011	2273 *s2++ = '\\';
adamc@1011	2274 break;
adamc@1011	2275 default:
adamc@1011	2276 if (isprint(c))
adamc@1011	2277 *s2++ = c;
adamc@1011	2278 else if (uw_Estrings) {
adamc@1011	2279 sprintf(s2, "\\%03o", c);
adamc@1011	2280 s2 += 4;
adamc@1011	2281 }
adamc@1011	2282 else
adamc@1011	2283 uw_error(ctx, FATAL, "Non-printable character %u in char to SQLify", c);
adamc@1011	2284 }
adamc@1011	2285
adamc@1011	2286 *s2++ = '\'';
adamc@1011	2287 strcpy(s2, uw_sqlsuffixChar);
adamc@1011	2288 ctx->heap.front = s2 + 1 + strlen(uw_sqlsuffixChar);
adamc@1011	2289 return r;
adamc@1011	2290 }
adamc@1011	2291
adamc@879	2292 char *uw_sqlsuffixBlob = "::bytea";
adamc@879	2293
adamc@737	2294 uw_Basis_string uw_Basis_sqlifyBlob(uw_context ctx, uw_Basis_blob b) {
adamc@737	2295 char r, s2;
adamc@737	2296 size_t i;
adamc@737	2297
adamc@879	2298 uw_check_heap(ctx, b.size * 5 + 3 + uw_Estrings + strlen(uw_sqlsuffixBlob));
adamc@737	2299
adamc@737	2300 r = s2 = ctx->heap.front;
adamc@879	2301 if (uw_Estrings)
adamc@879	2302 *s2++ = 'E';
adamc@737	2303 *s2++ = '\'';
adamc@737	2304
adamc@737	2305 for (i = 0; i < b.size; ++i) {
adamc@737	2306 char c = b.data[i];
adamc@737	2307
adamc@737	2308 switch (c) {
adamc@737	2309 case '\'':
adamc@885	2310 if (uw_Estrings)
adamc@885	2311 strcpy(s2, "\\'");
adamc@885	2312 else
adamc@885	2313 strcpy(s2, "''");
adamc@737	2314 s2 += 2;
adamc@737	2315 break;
adamc@737	2316 case '\\':
adamc@885	2317 if (uw_Estrings) {
adamc@885	2318 strcpy(s2, "\\\\\\\\");
adamc@885	2319 s2 += 4;
adamc@885	2320 } else
adamc@885	2321 *s2++ = '\\';
adamc@737	2322 break;
adamc@737	2323 default:
adamc@737	2324 if (isprint(c))
adamc@737	2325 *s2++ = c;
adamc@879	2326 else if (uw_Estrings) {
adamc@737	2327 sprintf(s2, "\\\\%03o", c);
adamc@737	2328 s2 += 5;
adamc@737	2329 }
adamc@879	2330 else
adamc@879	2331 uw_error(ctx, FATAL, "Non-printable character %u in blob to SQLify", c);
adamc@737	2332 }
adamc@737	2333 }
adamc@737	2334
adamc@879	2335 *s2++ = '\'';
adamc@879	2336 strcpy(s2, uw_sqlsuffixBlob);
adamc@879	2337 ctx->heap.front = s2 + 1 + strlen(uw_sqlsuffixBlob);
adamc@737	2338 return r;
adamc@737	2339 }
adamc@737	2340
adamc@682	2341 char *uw_Basis_sqlifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	2342 int len;
adamc@682	2343 char *r;
adamc@682	2344 unsigned long long combo = ((unsigned long long)chn.cli << 32) \| chn.chn;
adamc@682	2345
adamc@682	2346 uw_check_heap(ctx, INTS_MAX + 7);
adamc@682	2347 r = ctx->heap.front;
adamc@879	2348 sprintf(r, uw_sqlfmtInt, combo, &len);
adamc@682	2349 ctx->heap.front += len+1;
adamc@682	2350 return r;
adamc@682	2351 }
adamc@682	2352
adamc@682	2353 char *uw_Basis_attrifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	2354 int len;
adamc@682	2355 char *r;
adamc@682	2356 unsigned long long combo = ((unsigned long long)chn.cli << 32) \| chn.chn;
adamc@682	2357
adamc@682	2358 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	2359 r = ctx->heap.front;
adamc@682	2360 sprintf(r, "%lld%n", combo, &len);
adamc@682	2361 ctx->heap.front += len+1;
adamc@682	2362 return r;
adamc@682	2363 }
adamc@682	2364
adamc@879	2365 char *uw_sqlfmtUint4 = "%u::int4%n";
adamc@879	2366
adamc@682	2367 char *uw_Basis_sqlifyClient(uw_context ctx, uw_Basis_client cli) {
adamc@682	2368 int len;
adamc@682	2369 char *r;
adamc@682	2370
adamc@682	2371 uw_check_heap(ctx, INTS_MAX + 7);
adamc@682	2372 r = ctx->heap.front;
adamc@879	2373 sprintf(r, uw_sqlfmtUint4, cli, &len);
adamc@682	2374 ctx->heap.front += len+1;
adamc@682	2375 return r;
adamc@682	2376 }
adamc@682	2377
adamc@682	2378 char *uw_Basis_attrifyClient(uw_context ctx, uw_Basis_client cli) {
adamc@682	2379 int len;
adamc@682	2380 char *r;
adamc@682	2381
adamc@682	2382 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	2383 r = ctx->heap.front;
adamc@682	2384 sprintf(r, "%u%n", cli, &len);
adamc@682	2385 ctx->heap.front += len+1;
adamc@682	2386 return r;
adamc@682	2387 }
adamc@682	2388
adamc@467	2389 uw_Basis_string uw_Basis_sqlifyStringN(uw_context ctx, uw_Basis_string s) {
adamc@467	2390 if (s == NULL)
adamc@467	2391 return "NULL";
adamc@467	2392 else
adamc@467	2393 return uw_Basis_sqlifyString(ctx, s);
adamc@467	2394 }
adamc@467	2395
adamc@311	2396 char *uw_Basis_sqlifyBool(uw_context ctx, uw_Basis_bool b) {
adamc@311	2397 if (b == uw_Basis_False)
adamc@281	2398 return "FALSE";
adamc@281	2399 else
adamc@281	2400 return "TRUE";
adamc@281	2401 }
adamc@282	2402
adamc@467	2403 char uw_Basis_sqlifyBoolN(uw_context ctx, uw_Basis_bool b) {
adamc@467	2404 if (b == NULL)
adamc@467	2405 return "NULL";
adamc@467	2406 else
adamc@467	2407 return uw_Basis_sqlifyBool(ctx, *b);
adamc@467	2408 }
adamc@467	2409
adamc@439	2410 char *uw_Basis_sqlifyTime(uw_context ctx, uw_Basis_time t) {
adamc@439	2411 size_t len;
adamc@682	2412 char r, s;
adamc@682	2413 struct tm stm;
adamc@682	2414
adamc@682	2415 if (localtime_r(&t, &stm)) {
adamc@682	2416 s = uw_malloc(ctx, TIMES_MAX);
adamc@995	2417 --stm.tm_hour;
adamc@682	2418 len = strftime(s, TIMES_MAX, TIME_FMT, &stm);
adamc@682	2419 r = uw_malloc(ctx, len + 14);
adamc@682	2420 sprintf(r, "'%s'::timestamp", s);
adamc@682	2421 return r;
adamc@682	2422 } else
adamc@682	2423 return "<Invalid time>";
adamc@682	2424 }
adamc@682	2425
adamc@682	2426 char *uw_Basis_attrifyTime(uw_context ctx, uw_Basis_time t) {
adamc@682	2427 size_t len;
adamc@439	2428 char *r;
adamc@439	2429 struct tm stm;
adamc@439	2430
adamc@439	2431 if (localtime_r(&t, &stm)) {
adamc@439	2432 uw_check_heap(ctx, TIMES_MAX);
adamc@666	2433 r = ctx->heap.front;
adamc@439	2434 len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
adamc@666	2435 ctx->heap.front += len+1;
adamc@439	2436 return r;
adamc@439	2437 } else
adamc@439	2438 return "<Invalid time>";
adamc@439	2439 }
adamc@439	2440
adamc@467	2441 char uw_Basis_sqlifyTimeN(uw_context ctx, uw_Basis_time t) {
adamc@467	2442 if (t == NULL)
adamc@467	2443 return "NULL";
adamc@467	2444 else
adamc@467	2445 return uw_Basis_sqlifyTime(ctx, *t);
adamc@467	2446 }
adamc@467	2447
adamc@311	2448 char *uw_Basis_ensqlBool(uw_Basis_bool b) {
adamc@311	2449 static uw_Basis_int true = 1;
adamc@311	2450 static uw_Basis_int false = 0;
adamc@282	2451
adamc@311	2452 if (b == uw_Basis_False)
adamc@282	2453 return (char *)&false;
adamc@282	2454 else
adamc@282	2455 return (char *)&true;
adamc@282	2456 }
adamc@284	2457
adamc@311	2458 uw_Basis_string uw_Basis_intToString(uw_context ctx, uw_Basis_int n) {
adamc@284	2459 int len;
adamc@284	2460 char *r;
adamc@284	2461
adamc@311	2462 uw_check_heap(ctx, INTS_MAX);
adamc@666	2463 r = ctx->heap.front;
adamc@284	2464 sprintf(r, "%lld%n", n, &len);
adamc@666	2465 ctx->heap.front += len+1;
adamc@284	2466 return r;
adamc@284	2467 }
adamc@285	2468
adamc@311	2469 uw_Basis_string uw_Basis_floatToString(uw_context ctx, uw_Basis_float n) {
adamc@285	2470 int len;
adamc@285	2471 char *r;
adamc@285	2472
adamc@311	2473 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	2474 r = ctx->heap.front;
adamc@285	2475 sprintf(r, "%g%n", n, &len);
adamc@666	2476 ctx->heap.front += len+1;
adamc@285	2477 return r;
adamc@285	2478 }
adamc@285	2479
adamc@821	2480 uw_Basis_string uw_Basis_charToString(uw_context ctx, uw_Basis_char ch) {
adamc@821	2481 char *r = uw_malloc(ctx, 2);
adamc@821	2482 r[0] = ch;
adamc@821	2483 r[1] = 0;
adamc@821	2484 return r;
adamc@821	2485 }
adamc@821	2486
adamc@311	2487 uw_Basis_string uw_Basis_boolToString(uw_context ctx, uw_Basis_bool b) {
adamc@311	2488 if (b == uw_Basis_False)
adamc@285	2489 return "False";
adamc@285	2490 else
adamc@285	2491 return "True";
adamc@285	2492 }
adamc@288	2493
adamc@436	2494 uw_Basis_string uw_Basis_timeToString(uw_context ctx, uw_Basis_time t) {
adamc@436	2495 size_t len;
adamc@436	2496 char *r;
adamc@436	2497 struct tm stm;
adamc@436	2498
adamc@436	2499 if (localtime_r(&t, &stm)) {
adamc@436	2500 uw_check_heap(ctx, TIMES_MAX);
adamc@666	2501 r = ctx->heap.front;
adamc@436	2502 len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
adamc@666	2503 ctx->heap.front += len+1;
adamc@436	2504 return r;
adamc@436	2505 } else
adamc@436	2506 return "<Invalid time>";
adamc@436	2507 }
adamc@288	2508
adamc@311	2509 uw_Basis_int *uw_Basis_stringToInt(uw_context ctx, uw_Basis_string s) {
adamc@288	2510 char *endptr;
adamc@311	2511 uw_Basis_int n = strtoll(s, &endptr, 10);
adamc@288	2512
adamc@288	2513 if (s != '\0' && endptr == '\0') {
adamc@311	2514 uw_Basis_int *r = uw_malloc(ctx, sizeof(uw_Basis_int));
adamc@288	2515 *r = n;
adamc@288	2516 return r;
adamc@288	2517 } else
adamc@288	2518 return NULL;
adamc@288	2519 }
adamc@289	2520
adamc@311	2521 uw_Basis_float *uw_Basis_stringToFloat(uw_context ctx, uw_Basis_string s) {
adamc@289	2522 char *endptr;
adamc@311	2523 uw_Basis_float n = strtod(s, &endptr);
adamc@289	2524
adamc@289	2525 if (s != '\0' && endptr == '\0') {
adamc@311	2526 uw_Basis_float *r = uw_malloc(ctx, sizeof(uw_Basis_float));
adamc@289	2527 *r = n;
adamc@289	2528 return r;
adamc@289	2529 } else
adamc@289	2530 return NULL;
adamc@289	2531 }
adamc@289	2532
adamc@821	2533 uw_Basis_char *uw_Basis_stringToChar(uw_context ctx, uw_Basis_string s) {
adamc@821	2534 if (s[0] == 0) {
adamc@821	2535 uw_Basis_char *r = uw_malloc(ctx, 1);
adamc@821	2536 r[0] = 0;
adamc@821	2537 return r;
adamc@821	2538 } else if (s[1] != 0)
adamc@821	2539 return NULL;
adamc@821	2540 else {
adamc@821	2541 uw_Basis_char *r = uw_malloc(ctx, 1);
adamc@821	2542 r[0] = s[0];
adamc@821	2543 return r;
adamc@821	2544 }
adamc@821	2545 }
adamc@821	2546
adamc@311	2547 uw_Basis_bool *uw_Basis_stringToBool(uw_context ctx, uw_Basis_string s) {
adamc@311	2548 static uw_Basis_bool true = uw_Basis_True;
adamc@311	2549 static uw_Basis_bool false = uw_Basis_False;
adamc@289	2550
adamc@289	2551 if (!strcasecmp (s, "True"))
adamc@289	2552 return &true;
adamc@289	2553 else if (!strcasecmp (s, "False"))
adamc@289	2554 return &false;
adamc@289	2555 else
adamc@289	2556 return NULL;
adamc@289	2557 }
adamc@292	2558
adamc@436	2559 uw_Basis_time *uw_Basis_stringToTime(uw_context ctx, uw_Basis_string s) {
adamc@438	2560 char dot = strchr(s, '.'), end = strchr(s, 0);
adamc@436	2561 struct tm stm;
adamc@436	2562
adamc@439	2563 if (dot) {
adamc@439	2564 *dot = 0;
adamc@439	2565 if (strptime(s, TIME_FMT_PG, &stm) == end) {
adamc@439	2566 *dot = '.';
adamc@439	2567 uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
adamc@439	2568 *r = mktime(&stm);
adamc@439	2569 return r;
adamc@439	2570 }
adamc@439	2571 else {
adamc@439	2572 *dot = '.';
adamc@439	2573 return NULL;
adamc@439	2574 }
adamc@436	2575 }
adamc@439	2576 else {
adamc@439	2577 if (strptime(s, TIME_FMT_PG, &stm) == end) {
adamc@439	2578 uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
adamc@439	2579 *r = mktime(&stm);
adamc@439	2580 return r;
adamc@439	2581 }
adamc@439	2582 else if (strptime(s, TIME_FMT, &stm) == end) {
adamc@439	2583 uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
adamc@439	2584 *r = mktime(&stm);
adamc@439	2585 return r;
adamc@439	2586 }
adamc@439	2587 else
adamc@439	2588 return NULL;
adamc@439	2589 }
adamc@436	2590 }
adamc@436	2591
adamc@311	2592 uw_Basis_int uw_Basis_stringToInt_error(uw_context ctx, uw_Basis_string s) {
adamc@292	2593 char *endptr;
adamc@311	2594 uw_Basis_int n = strtoll(s, &endptr, 10);
adamc@292	2595
adamc@292	2596 if (s != '\0' && endptr == '\0')
adamc@292	2597 return n;
adamc@292	2598 else
adamc@311	2599 uw_error(ctx, FATAL, "Can't parse int: %s", s);
adamc@292	2600 }
adamc@293	2601
adamc@682	2602 #include <errno.h>
adamc@682	2603
adamc@678	2604 uw_Basis_channel uw_Basis_stringToChannel_error(uw_context ctx, uw_Basis_string s) {
adamc@682	2605 unsigned long long n;
adamc@682	2606
adamc@682	2607 if (sscanf(s, "%llu", &n) < 1)
adamc@682	2608 uw_error(ctx, FATAL, "Can't parse channel: %s", s);
adamc@682	2609 else {
adamc@682	2610 uw_Basis_channel ch = {n >> 32, n & ((1ull << 32) - 1)};
adamc@682	2611 return ch;
adamc@682	2612 }
adamc@682	2613 }
adamc@682	2614
adamc@682	2615 uw_Basis_client uw_Basis_stringToClient_error(uw_context ctx, uw_Basis_string s) {
adamc@678	2616 char *endptr;
adamc@682	2617 unsigned long n = strtoul(s, &endptr, 10);
adamc@678	2618
adamc@678	2619 if (s != '\0' && endptr == '\0')
adamc@678	2620 return n;
adamc@678	2621 else
adamc@682	2622 uw_error(ctx, FATAL, "Can't parse client: %s", s);
adamc@678	2623 }
adamc@678	2624
adamc@311	2625 uw_Basis_float uw_Basis_stringToFloat_error(uw_context ctx, uw_Basis_string s) {
adamc@293	2626 char *endptr;
adamc@311	2627 uw_Basis_float n = strtod(s, &endptr);
adamc@293	2628
adamc@293	2629 if (s != '\0' && endptr == '\0')
adamc@293	2630 return n;
adamc@293	2631 else
adamc@311	2632 uw_error(ctx, FATAL, "Can't parse float: %s", s);
adamc@293	2633 }
adamc@293	2634
adamc@821	2635 uw_Basis_char uw_Basis_stringToChar_error(uw_context ctx, uw_Basis_string s) {
adamc@821	2636 if (s[0] == 0)
adamc@821	2637 return 0;
adamc@821	2638 else if (s[1] != 0)
adamc@821	2639 uw_error(ctx, FATAL, "Can't parse char: %s", s);
adamc@821	2640 else
adamc@821	2641 return s[0];
adamc@821	2642 }
adamc@821	2643
adamc@311	2644 uw_Basis_bool uw_Basis_stringToBool_error(uw_context ctx, uw_Basis_string s) {
adamc@296	2645 if (!strcasecmp(s, "T") \|\| !strcasecmp (s, "True"))
adamc@311	2646 return uw_Basis_True;
adamc@296	2647 else if (!strcasecmp(s, "F") \|\| !strcasecmp (s, "False"))
adamc@311	2648 return uw_Basis_False;
adamc@293	2649 else
adamc@311	2650 uw_error(ctx, FATAL, "Can't parse bool: %s", s);
adamc@293	2651 }
adamc@436	2652
adamc@436	2653 uw_Basis_time uw_Basis_stringToTime_error(uw_context ctx, uw_Basis_string s) {
adamc@438	2654 char dot = strchr(s, '.'), end = strchr(s, 0);
adamc@436	2655 struct tm stm = {};
adamc@436	2656
adamc@438	2657 if (dot) {
adamc@438	2658 *dot = 0;
adamc@438	2659 if (strptime(s, TIME_FMT_PG, &stm)) {
adamc@438	2660 *dot = '.';
adamc@438	2661 return mktime(&stm);
adamc@438	2662 }
adamc@438	2663 else {
adamc@438	2664 *dot = '.';
adamc@438	2665 uw_error(ctx, FATAL, "Can't parse time: %s", s);
adamc@438	2666 }
adamc@438	2667 }
adamc@438	2668 else {
adamc@439	2669 if (strptime(s, TIME_FMT_PG, &stm) == end)
adamc@439	2670 return mktime(&stm);
adamc@439	2671 else if (strptime(s, TIME_FMT, &stm) == end)
adamc@438	2672 return mktime(&stm);
adamc@438	2673 else
adamc@438	2674 uw_error(ctx, FATAL, "Can't parse time: %s", s);
adamc@438	2675 }
adamc@436	2676 }
adamc@457	2677
adamc@939	2678 uw_Basis_time uw_Basis_unsqlTime(uw_context ctx, uw_Basis_string s) {
adamc@939	2679 char dot = strchr(s, '.'), end = strchr(s, 0);
adamc@939	2680 struct tm stm = {};
adamc@939	2681
adamc@939	2682 if (dot) {
adamc@939	2683 *dot = 0;
adamc@939	2684 if (strptime(s, TIME_FMT_PG, &stm)) {
adamc@939	2685 *dot = '.';
adamc@939	2686 return mktime(&stm);
adamc@939	2687 }
adamc@939	2688 else {
adamc@939	2689 *dot = '.';
adamc@939	2690 uw_error(ctx, FATAL, "Can't parse time: %s", s);
adamc@939	2691 }
adamc@939	2692 }
adamc@939	2693 else {
adamc@939	2694 if (strptime(s, TIME_FMT_PG, &stm) == end) {
adamc@939	2695 return mktime(&stm);
adamc@939	2696 } else if (strptime(s, TIME_FMT, &stm) == end) {
adamc@939	2697 return mktime(&stm);
adamc@939	2698 } else
adamc@939	2699 uw_error(ctx, FATAL, "Can't parse time: %s", s);
adamc@939	2700 }
adamc@939	2701 }
adamc@939	2702
adamc@742	2703 uw_Basis_blob uw_Basis_stringToBlob_error(uw_context ctx, uw_Basis_string s, size_t len) {
adamc@742	2704 char *r = ctx->heap.front;
adamc@742	2705 uw_Basis_blob b = {len, r};
adamc@742	2706
adamc@742	2707 uw_check_heap(ctx, len);
adamc@742	2708
adamc@742	2709 while (*s) {
adamc@742	2710 if (s[0] == '\\') {
adamc@742	2711 if (s[1] == '\\') {
adamc@742	2712 *r++ = '\\';
adamc@742	2713 s += 2;
adamc@742	2714 } else if (isdigit(s[1]) && isdigit(s[2]) && isdigit(s[3])) {
adamc@742	2715 r++ = (s[1] - '0') 8 * 8 + ((s[2] - '0') * 8) + (s[3] - '0');
adamc@742	2716 s += 4;
adamc@742	2717 }
adamc@742	2718 else {
adamc@742	2719 *r++ = '\\';
adamc@742	2720 ++s;
adamc@742	2721 }
adamc@742	2722 } else {
adamc@742	2723 *r++ = s[0];
adamc@742	2724 ++s;
adamc@742	2725 }
adamc@742	2726 }
adamc@742	2727
adamc@742	2728 b.size = r - ctx->heap.front;
adamc@742	2729 ctx->heap.front = r;
adamc@742	2730 return b;
adamc@742	2731 }
adamc@742	2732
adamc@1052	2733 #define THE_PAST "expires=Mon, 01-01-1970 00:00:00 GMT"
adamc@1052	2734
adamc@463	2735 uw_Basis_string uw_Basis_get_cookie(uw_context ctx, uw_Basis_string c) {
adamc@463	2736 int len = strlen(c);
adamc@854	2737 char *p = ctx->outHeaders.start;
adamc@474	2738
adamc@474	2739 while (p = strstr(p, "\nSet-Cookie: ")) {
adamc@474	2740 char *p2;
adamc@474	2741 p += 13;
adamc@474	2742 p2 = strchr(p, '=');
adamc@474	2743
adamc@474	2744 if (p2) {
adamc@474	2745 size_t sz = strcspn(p2+1, ";\r\n");
adamc@474	2746
adamc@474	2747 if (!strncasecmp(p, c, p2 - p)) {
adamc@1052	2748 if (sz == 0 && strstr(p2+2, THE_PAST))
adamc@1052	2749 return NULL;
adamc@1052	2750 else {
adamc@1052	2751 char *ret = uw_malloc(ctx, sz + 1);
adamc@1052	2752 memcpy(ret, p2+1, sz);
adamc@1052	2753 ret[sz] = 0;
adamc@1052	2754 return ret;
adamc@1052	2755 }
adamc@474	2756 }
adamc@474	2757 }
adamc@474	2758 }
adamc@463	2759
adamc@854	2760 if (p = uw_Basis_requestHeader(ctx, "Cookie")) {
adamc@1051	2761 char *p2;
adamc@1051	2762
adamc@854	2763 while (1) {
adamc@1051	2764 if (!strncmp(p, c, len) && p[len] == '=') {
adamc@1051	2765 if (p2 = strchr(p, ';')) {
adamc@1051	2766 size_t n = p2 - (p + len);
adamc@1051	2767 char *r = uw_malloc(ctx, n);
adamc@1051	2768 memcpy(r, p + 1 + len, n-1);
adamc@1051	2769 r[n-1] = 0;
adamc@1051	2770 return r;
adamc@1051	2771 } else
adamc@1051	2772 return p + 1 + len;
adamc@1051	2773 } else if (p = strchr(p, ';'))
adamc@854	2774 p += 2;
adamc@463	2775 else
adamc@463	2776 return NULL;
adamc@463	2777 }
adamc@463	2778 }
adamc@792	2779
adamc@792	2780 return NULL;
adamc@457	2781 }
adamc@462	2782
adamc@1050	2783 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	2784 uw_write_header(ctx, "Set-Cookie: ");
adamc@462	2785 uw_write_header(ctx, c);
adamc@462	2786 uw_write_header(ctx, "=");
adamc@462	2787 uw_write_header(ctx, v);
adamc@466	2788 uw_write_header(ctx, "; path=");
adamc@466	2789 uw_write_header(ctx, prefix);
adamc@1050	2790 if (expires) {
adamc@1050	2791 char formatted[30];
adamc@1050	2792 struct tm tm;
adamc@1050	2793
adamc@1050	2794 gmtime_r(expires, &tm);
adamc@1050	2795
adamc@1050	2796 strftime(formatted, sizeof formatted, "%a, %d-%b-%Y %T GMT", &tm);
adamc@1050	2797
adamc@1050	2798 uw_write_header(ctx, "; expires=");
adamc@1050	2799 uw_write_header(ctx, formatted);
adamc@1050	2800 }
adamc@1050	2801 if (secure)
adamc@1050	2802 uw_write_header(ctx, "; secure");
adamc@462	2803 uw_write_header(ctx, "\r\n");
adamc@462	2804
adamc@462	2805 return uw_unit_v;
adamc@462	2806 }
adamc@667	2807
adamc@1050	2808 uw_unit uw_Basis_clear_cookie(uw_context ctx, uw_Basis_string prefix, uw_Basis_string c) {
adamc@1050	2809 uw_write_header(ctx, "Set-Cookie: ");
adamc@1050	2810 uw_write_header(ctx, c);
adamc@1050	2811 uw_write_header(ctx, "=; path=");
adamc@1050	2812 uw_write_header(ctx, prefix);
adamc@1052	2813 uw_write_header(ctx, "; " THE_PAST "\r\n");
adamc@1050	2814
adamc@1050	2815 return uw_unit_v;
adamc@1050	2816 }
adamc@1050	2817
adamc@1113	2818 size_t uw_deltas_max = SIZE_MAX;
adamc@1113	2819
adamc@682	2820 static delta *allocate_delta(uw_context ctx, unsigned client) {
adamc@682	2821 unsigned i;
adamc@682	2822 delta *d;
adamc@671	2823
adamc@682	2824 for (i = 0; i < ctx->used_deltas; ++i)
adamc@682	2825 if (ctx->deltas[i].client == client)
adamc@682	2826 return &ctx->deltas[i];
adamc@671	2827
adamc@682	2828 if (ctx->used_deltas >= ctx->n_deltas) {
adamc@1113	2829 if (ctx->n_deltas + 1 > uw_deltas_max)
adamc@1113	2830 uw_error(ctx, FATAL, "Exceeded limit on number of deltas");
adamc@1113	2831
adamc@682	2832 ctx->deltas = realloc(ctx->deltas, sizeof(delta) * ++ctx->n_deltas);
adamc@1113	2833 buf_init(uw_messages_max, &ctx->deltas[ctx->n_deltas-1].msgs, 0);
adamc@682	2834 }
adamc@671	2835
adamc@682	2836 d = &ctx->deltas[ctx->used_deltas++];
adamc@682	2837 d->client = client;
adamc@682	2838 buf_reset(&d->msgs);
adamc@682	2839 return d;
adamc@671	2840 }
adamc@671	2841
adamc@668	2842 uw_Basis_channel uw_Basis_new_channel(uw_context ctx, uw_unit u) {
adamc@682	2843 if (ctx->client == NULL)
adamc@682	2844 uw_error(ctx, FATAL, "Attempt to create channel on request not associated with a persistent connection");
adamc@671	2845
adamc@682	2846 return new_channel(ctx->client);
adamc@668	2847 }
adamc@668	2848
adamc@668	2849 uw_unit uw_Basis_send(uw_context ctx, uw_Basis_channel chn, uw_Basis_string msg) {
adamc@682	2850 delta *d = allocate_delta(ctx, chn.cli);
adamc@682	2851 size_t len;
adamc@682	2852 int preLen;
adamc@682	2853 char pre[INTS_MAX + 2];
adamc@668	2854
adamc@682	2855 len = strlen(msg);
adamc@682	2856
adamc@682	2857 sprintf(pre, "%u\n%n", chn.chn, &preLen);
adamc@682	2858
adamc@1113	2859 ctx_buf_append(ctx, "messages", &d->msgs, pre, preLen);
adamc@1113	2860 ctx_buf_append(ctx, "messages", &d->msgs, msg, len);
adamc@1113	2861 ctx_buf_append(ctx, "messages", &d->msgs, "\n", 1);
adamc@671	2862
adamc@671	2863 return uw_unit_v;
adamc@668	2864 }
adamc@671	2865
adamc@671	2866 void uw_commit(uw_context ctx) {
adamc@1104	2867 int i;
adamc@1104	2868
adamc@1104	2869 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@771	2870 if (ctx->transactionals[i].rollback != NULL)
adamc@1083	2871 if (ctx->transactionals[i].commit)
adamc@1083	2872 ctx->transactionals[i].commit(ctx->transactionals[i].data);
adamc@771	2873
adamc@1104	2874 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@771	2875 if (ctx->transactionals[i].rollback == NULL)
adamc@1083	2876 if (ctx->transactionals[i].commit)
adamc@1083	2877 ctx->transactionals[i].commit(ctx->transactionals[i].data);
adamc@771	2878
adamc@1094	2879 if (ctx->app->db_commit(ctx))
adamc@671	2880 uw_error(ctx, FATAL, "Error running SQL COMMIT");
adamc@682	2881
adamc@682	2882 for (i = 0; i < ctx->used_deltas; ++i) {
adamc@682	2883 delta *d = &ctx->deltas[i];
adamc@682	2884 client *c = find_client(d->client);
adamc@682	2885
adamc@682	2886 assert (c != NULL && c->mode == USED);
adamc@682	2887
adamc@685	2888 client_send(c, &d->msgs);
adamc@682	2889 }
adamc@682	2890
adamc@682	2891 if (ctx->client)
adamc@685	2892 release_client(ctx->client);
adamc@771	2893
adamc@1104	2894 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@1083	2895 if (ctx->transactionals[i].free)
adamc@1083	2896 ctx->transactionals[i].free(ctx->transactionals[i].data);
adamc@916	2897
adamc@916	2898 // Splice script data into appropriate part of page
adamc@1065	2899 if (ctx->returning_indirectly \|\| ctx->script_header[0] == 0) {
adamc@995	2900 char *start = strstr(ctx->page.start, "<sc>");
adamc@995	2901 if (start) {
adamc@995	2902 memmove(start, start + 4, buf_used(&ctx->page) - (start - ctx->page.start) - 4);
adamc@995	2903 ctx->page.front -= 4;
adamc@995	2904 }
adamc@995	2905 } else if (buf_used(&ctx->script) == 0) {
adamc@916	2906 size_t len = strlen(ctx->script_header);
adamc@916	2907 char *start = strstr(ctx->page.start, "<sc>");
adamc@916	2908 if (start) {
adamc@1113	2909 ctx_buf_check(ctx, "page", &ctx->page, buf_used(&ctx->page) - 4 + len);
adamc@917	2910 start = strstr(ctx->page.start, "<sc>");
adamc@916	2911 memmove(start + len, start + 4, buf_used(&ctx->page) - (start - ctx->page.start) - 3);
adamc@916	2912 ctx->page.front += len - 4;
adamc@916	2913 memcpy(start, ctx->script_header, len);
adamc@916	2914 }
adamc@916	2915 } else {
adamc@916	2916 size_t lenH = strlen(ctx->script_header), len = buf_used(&ctx->script);
adamc@916	2917 size_t lenP = lenH + 40 + len;
adamc@916	2918 char *start = strstr(ctx->page.start, "<sc>");
adamc@916	2919 if (start) {
adamc@1113	2920 ctx_buf_check(ctx, "page", &ctx->page, buf_used(&ctx->page) - 4 + lenP);
adamc@917	2921 start = strstr(ctx->page.start, "<sc>");
adamc@916	2922 memmove(start + lenP, start + 4, buf_used(&ctx->page) - (start - ctx->page.start) - 3);
adamc@916	2923 ctx->page.front += lenP - 4;
adamc@916	2924 memcpy(start, ctx->script_header, lenH);
adamc@916	2925 memcpy(start + lenH, "<script type=\"text/javascript\">", 31);
adamc@916	2926 memcpy(start + lenH + 31, ctx->script.start, len);
adamc@916	2927 memcpy(start + lenH + 31 + len, "</script>", 9);
adamc@916	2928 }
adamc@916	2929 }
adamc@671	2930 }
adamc@671	2931
adamc@671	2932 int uw_rollback(uw_context ctx) {
adamc@1104	2933 int i;
adamc@885	2934 cleanup *cl;
adamc@771	2935
adamc@682	2936 if (ctx->client)
adamc@685	2937 release_client(ctx->client);
adamc@671	2938
adamc@885	2939 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adamc@885	2940 cl->func(cl->arg);
adamc@885	2941
adamc@885	2942 ctx->cleanup_front = ctx->cleanup;
adamc@885	2943
adamc@1104	2944 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@771	2945 if (ctx->transactionals[i].rollback != NULL)
adamc@771	2946 ctx->transactionals[i].rollback(ctx->transactionals[i].data);
adamc@771	2947
adamc@1104	2948 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@1084	2949 if (ctx->transactionals[i].free)
adamc@1084	2950 ctx->transactionals[i].free(ctx->transactionals[i].data);
adamc@771	2951
adamc@1094	2952 return ctx->app->db_rollback(ctx);
adamc@671	2953 }
adamc@683	2954
adamc@1113	2955 size_t uw_transactionals_max = SIZE_MAX;
adamc@1113	2956
adamc@771	2957 void uw_register_transactional(uw_context ctx, void *data, uw_callback commit, uw_callback rollback,
adamc@771	2958 uw_callback free) {
adamc@771	2959 if (ctx->used_transactionals >= ctx->n_transactionals) {
adamc@1113	2960 if (ctx->used_transactionals+1 > uw_transactionals_max)
adamc@1113	2961 uw_error(ctx, FATAL, "Exceeded limit on number of transactionals");
adamc@1084	2962 ctx->transactionals = realloc(ctx->transactionals, sizeof(transactional) * (ctx->used_transactionals+1));
adamc@771	2963 ++ctx->n_transactionals;
adamc@771	2964 }
adamc@771	2965
adamc@771	2966 ctx->transactionals[ctx->used_transactionals].data = data;
adamc@771	2967 ctx->transactionals[ctx->used_transactionals].commit = commit;
adamc@771	2968 ctx->transactionals[ctx->used_transactionals].rollback = rollback;
adamc@771	2969 ctx->transactionals[ctx->used_transactionals++].free = free;
adamc@771	2970 }
adamc@771	2971
adamc@683	2972
adamc@683	2973 // "Garbage collection"
adamc@683	2974
adamc@683	2975 static failure_kind uw_expunge(uw_context ctx, uw_Basis_client cli) {
adamc@683	2976 int r = setjmp(ctx->jmp_buf);
adamc@683	2977
adamc@684	2978 if (r == 0) {
adamc@1094	2979 if (ctx->app->db_begin(ctx))
adamc@684	2980 uw_error(ctx, FATAL, "Error running SQL BEGIN");
adamc@1094	2981 ctx->app->expunger(ctx, cli);
adamc@1094	2982 if (ctx->app->db_commit(ctx))
adamc@684	2983 uw_error(ctx, FATAL, "Error running SQL COMMIT");
adamc@684	2984 }
adamc@683	2985
adamc@683	2986 return r;
adamc@683	2987 }
adamc@683	2988
adamc@683	2989 void uw_prune_clients(uw_context ctx) {
adamc@683	2990 client c, next, *prev = NULL;
adamc@683	2991 time_t cutoff;
adamc@683	2992
adamc@1094	2993 cutoff = time(NULL) - ctx->app->timeout;
adamc@683	2994
adamc@683	2995 pthread_mutex_lock(&clients_mutex);
adamc@683	2996
adamc@683	2997 for (c = clients_used; c; c = next) {
adamc@683	2998 next = c->next;
adamc@683	2999 pthread_mutex_lock(&c->lock);
adamc@685	3000 if (c->last_contact < cutoff && c->refcount == 0) {
adamc@683	3001 failure_kind fk = UNLIMITED_RETRY;
adamc@683	3002 if (prev)
adamc@683	3003 prev->next = next;
adamc@683	3004 else
adamc@683	3005 clients_used = next;
adamc@684	3006 uw_reset(ctx);
adamc@683	3007 while (fk == UNLIMITED_RETRY) {
adamc@683	3008 fk = uw_expunge(ctx, c->id);
adamc@684	3009 if (fk == UNLIMITED_RETRY) {
adamc@1094	3010 ctx->app->db_rollback(ctx);
adamc@684	3011 printf("Unlimited retry during expunge: %s\n", uw_error_message(ctx));
adamc@683	3012 }
adamc@683	3013 }
adamc@684	3014 if (fk == SUCCESS)
adamc@684	3015 free_client(c);
adamc@684	3016 else {
adamc@1094	3017 ctx->app->db_rollback(ctx);
adamc@856	3018 fprintf(stderr, "Expunge blocked by error: %s\n", uw_error_message(ctx));
adamc@684	3019 }
adamc@683	3020 }
adamc@683	3021 else
adamc@683	3022 prev = c;
adamc@683	3023 pthread_mutex_unlock(&c->lock);
adamc@683	3024 }
adamc@683	3025
adamc@683	3026 pthread_mutex_unlock(&clients_mutex);
adamc@683	3027 }
adamc@687	3028
adamc@687	3029 failure_kind uw_initialize(uw_context ctx) {
adamc@687	3030 int r = setjmp(ctx->jmp_buf);
adamc@687	3031
adamc@687	3032 if (r == 0) {
adamc@1094	3033 if (ctx->app->db_begin(ctx))
adamc@687	3034 uw_error(ctx, FATAL, "Error running SQL BEGIN");
adamc@1094	3035 ctx->app->initializer(ctx);
adamc@1094	3036 if (ctx->app->db_commit(ctx))
adamc@687	3037 uw_error(ctx, FATAL, "Error running SQL COMMIT");
adamc@687	3038 }
adamc@687	3039
adamc@687	3040 return r;
adamc@687	3041 }
adamc@717	3042
adamc@1065	3043 static int url_bad(uw_Basis_string s) {
adamc@1065	3044 for (; *s; ++s)
adamc@1065	3045 if (!isgraph(*s))
adamc@1065	3046 return 1;
adamc@1065	3047
adamc@1065	3048 return 0;
adamc@1065	3049 }
adamc@1065	3050
adamc@717	3051 uw_Basis_string uw_Basis_bless(uw_context ctx, uw_Basis_string s) {
adamc@1065	3052 if (url_bad(s))
adamc@1065	3053 uw_error(ctx, FATAL, "Invalid URL %s", uw_Basis_htmlifyString(ctx, s));
adamc@1094	3054 if (ctx->app->check_url(s))
adamc@770	3055 return s;
adamc@770	3056 else
adamc@770	3057 uw_error(ctx, FATAL, "Disallowed URL %s", uw_Basis_htmlifyString(ctx, s));
adamc@717	3058 }
adamc@734	3059
adamc@770	3060 uw_Basis_string uw_Basis_checkUrl(uw_context ctx, uw_Basis_string s) {
adamc@1065	3061 if (url_bad(s))
adamc@1065	3062 return NULL;
adamc@1094	3063 if (ctx->app->check_url(s))
adamc@770	3064 return s;
adamc@770	3065 else
adamc@770	3066 return NULL;
adamc@770	3067 }
adamc@770	3068
adamc@770	3069 int mime_format(const char *s) {
adamc@770	3070 for (; *s; ++s)
adamc@770	3071 if (!isalnum(s) && s != '/' && s != '-' && s != '.')
adamc@770	3072 return 0;
adamc@770	3073
adamc@770	3074 return 1;
adamc@770	3075 }
adamc@770	3076
adamc@741	3077 uw_Basis_string uw_Basis_blessMime(uw_context ctx, uw_Basis_string s) {
adamc@770	3078 if (!mime_format(s))
adamc@770	3079 uw_error(ctx, FATAL, "MIME type \"%s\" contains invalid character", uw_Basis_htmlifyString(ctx, s));
adamc@770	3080
adamc@1094	3081 if (ctx->app->check_mime(s))
adamc@770	3082 return s;
adamc@770	3083 else
adamc@770	3084 uw_error(ctx, FATAL, "Disallowed MIME type %s", uw_Basis_htmlifyString(ctx, s));
adamc@770	3085 }
adamc@770	3086
adamc@770	3087 uw_Basis_string uw_Basis_checkMime(uw_context ctx, uw_Basis_string s) {
adamc@770	3088 if (!mime_format(s))
adamc@770	3089 return NULL;
adamc@770	3090
adamc@1094	3091 if (ctx->app->check_mime(s))
adamc@770	3092 return s;
adamc@770	3093 else
adamc@770	3094 return NULL;
adamc@741	3095 }
adamc@741	3096
adamc@734	3097 uw_Basis_string uw_unnull(uw_Basis_string s) {
adamc@734	3098 return s ? s : "";
adamc@734	3099 }
adamc@734	3100
adamc@734	3101 extern int uw_hash_blocksize;
adamc@734	3102
adamc@734	3103 uw_Basis_string uw_Basis_makeSigString(uw_context ctx, uw_Basis_string sig) {
adamc@734	3104 uw_Basis_string r = uw_malloc(ctx, 2 * uw_hash_blocksize + 1);
adamc@734	3105 int i;
adamc@734	3106
adamc@734	3107 for (i = 0; i < uw_hash_blocksize; ++i)
adamc@734	3108 sprintf(&r[2i], "%.02X", ((unsigned char )sig)[i]);
adamc@734	3109
adamc@734	3110 return r;
adamc@734	3111 }
adamc@734	3112
adamc@734	3113 uw_Basis_string uw_Basis_sigString(uw_context ctx, uw_unit u) {
adamc@1094	3114 return ctx->app->cookie_sig(ctx);
adamc@734	3115 }
adamc@737	3116
adamc@737	3117 uw_Basis_string uw_Basis_fileName(uw_context ctx, uw_Basis_file f) {
adamc@737	3118 return f.name;
adamc@737	3119 }
adamc@737	3120
adamc@740	3121 uw_Basis_string uw_Basis_fileMimeType(uw_context ctx, uw_Basis_file f) {
adamc@740	3122 return f.type;
adamc@740	3123 }
adamc@740	3124
adamc@745	3125 uw_Basis_int uw_Basis_blobSize(uw_context ctx, uw_Basis_blob b) {
adamc@745	3126 return b.size;
adamc@745	3127 }
adamc@745	3128
adamc@737	3129 uw_Basis_blob uw_Basis_fileData(uw_context ctx, uw_Basis_file f) {
adamc@737	3130 return f.data;
adamc@737	3131 }
adamc@741	3132
adamc@741	3133 __attribute__((noreturn)) void uw_return_blob(uw_context ctx, uw_Basis_blob b, uw_Basis_string mimeType) {
adamc@741	3134 cleanup *cl;
adamc@741	3135 int len;
adamc@741	3136
adamc@1065	3137 ctx->returning_indirectly = 1;
adamc@741	3138 buf_reset(&ctx->outHeaders);
adamc@741	3139 buf_reset(&ctx->page);
adamc@741	3140
adamc@856	3141 uw_write_header(ctx, on_success);
adamc@856	3142 uw_write_header(ctx, "Content-Type: ");
adamc@741	3143 uw_write_header(ctx, mimeType);
adamc@741	3144 uw_write_header(ctx, "\r\nContent-Length: ");
adamc@1113	3145 ctx_buf_check(ctx, "headers", &ctx->outHeaders, INTS_MAX);
adamc@741	3146 sprintf(ctx->outHeaders.front, "%d%n", b.size, &len);
adamc@741	3147 ctx->outHeaders.front += len;
adamc@1066	3148 uw_write_header(ctx, "\r\n");
adamc@741	3149
adamc@1113	3150 ctx_buf_append(ctx, "page", &ctx->page, b.data, b.size);
adamc@741	3151
adamc@741	3152 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adamc@741	3153 cl->func(cl->arg);
adamc@741	3154
adamc@741	3155 ctx->cleanup_front = ctx->cleanup;
adamc@741	3156
adamc@1065	3157 longjmp(ctx->jmp_buf, RETURN_INDIRECTLY);
adamc@1065	3158 }
adamc@1065	3159
adamc@1065	3160 __attribute__((noreturn)) void uw_redirect(uw_context ctx, uw_Basis_string url) {
adamc@1065	3161 cleanup *cl;
adamc@1065	3162 int len;
adamc@1066	3163 char *s;
adamc@1065	3164
adamc@1065	3165 ctx->returning_indirectly = 1;
adamc@1066	3166 buf_reset(&ctx->page);
adamc@1113	3167 ctx_buf_check(ctx, "page", &ctx->page, buf_used(&ctx->outHeaders)+1);
adamc@1066	3168 memcpy(ctx->page.start, ctx->outHeaders.start, buf_used(&ctx->outHeaders));
adamc@1066	3169 ctx->page.start[buf_used(&ctx->outHeaders)] = 0;
adamc@1065	3170 buf_reset(&ctx->outHeaders);
adamc@1065	3171
adamc@1065	3172 uw_write_header(ctx, on_redirect);
adamc@1066	3173
adamc@1066	3174 s = strchr(ctx->page.start, '\n');
adamc@1066	3175 if (s) {
adamc@1066	3176 char *s2;
adamc@1066	3177 for (++s; s2 = strchr(s, '\n'); s = s2+1) {
adamc@1066	3178 *s2 = 0;
adamc@1066	3179 if (!strncmp(s, "Set-Cookie: ", 12)) {
adamc@1066	3180 uw_write_header(ctx, s);
adamc@1066	3181 uw_write_header(ctx, "\n");
adamc@1066	3182 }
adamc@1066	3183 }
adamc@1066	3184 }
adamc@1066	3185
adamc@1065	3186 uw_write_header(ctx, "Location: ");
adamc@1065	3187 uw_write_header(ctx, url);
adamc@1065	3188 uw_write_header(ctx, "\r\n\r\n");
adamc@1065	3189
adamc@1065	3190 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adamc@1065	3191 cl->func(cl->arg);
adamc@1065	3192
adamc@1065	3193 ctx->cleanup_front = ctx->cleanup;
adamc@1065	3194
adamc@1065	3195 longjmp(ctx->jmp_buf, RETURN_INDIRECTLY);
adamc@741	3196 }
adamc@874	3197
adamc@874	3198 uw_Basis_string uw_Basis_unAs(uw_context ctx, uw_Basis_string s) {
adamc@874	3199 uw_Basis_string r = uw_malloc(ctx, strlen(s) + 1);
adamc@874	3200
adamc@874	3201 for (; *s; ++s) {
adamc@874	3202 if (s[0] == '\'') {
adamc@874	3203 *r++ = '\'';
adamc@874	3204 for (++s; *s; ++s) {
adamc@874	3205 if (s[0] == '\'') {
adamc@874	3206 *r++ = '\'';
adamc@874	3207 break;
adamc@874	3208 } else if (s[0] == '\\') {
adamc@874	3209 if (s[1] == '\\') {
adamc@874	3210 *r++ = '\\';
adamc@874	3211 *r++ = '\\';
adamc@874	3212 ++s;
adamc@874	3213 } else if (s[1] == '\'') {
adamc@874	3214 *r++ = '\\';
adamc@874	3215 *r++ = '\'';
adamc@874	3216 ++s;
adamc@874	3217 } else
adamc@874	3218 *r++ = '\'';
adamc@874	3219 } else
adamc@874	3220 *r++ = s[0];
adamc@874	3221 }
adamc@874	3222 if (*s == 0) break;
adamc@874	3223 } else if (s[0] == 'T' && s[1] == '.')
adamc@874	3224 ++s;
adamc@874	3225 else
adamc@874	3226 *r++ = s[0];
adamc@874	3227 }
adamc@874	3228
adamc@874	3229 return r;
adamc@874	3230 }
adamc@874	3231
adamc@922	3232 uw_Basis_string uw_Basis_mstrcat(uw_context ctx, ...) {
adamc@922	3233 va_list ap;
adamc@922	3234 size_t len = 1;
adamc@922	3235 char s, r, *s2;
adamc@922	3236
adamc@922	3237 va_start(ap, ctx);
adamc@922	3238 for (s = va_arg(ap, char); s; s = va_arg(ap, char))
adamc@922	3239 len += strlen(s);
adamc@922	3240 va_end(ap);
adamc@922	3241
adamc@922	3242 r = uw_malloc(ctx, len);
adamc@922	3243 va_start(ap, ctx);
adamc@922	3244 for (s2 = r, s = va_arg(ap, char); s; s = va_arg(ap, char))
adamc@922	3245 while (*s)
adamc@922	3246 s2++ = s++;
adamc@922	3247 va_end(ap);
adamc@922	3248 *s2 = 0;
adamc@922	3249
adamc@922	3250 return r;
adamc@922	3251 }
adamc@1006	3252
adamc@1050	3253 const uw_Basis_time minTime = 0;
adamc@1050	3254
adamc@1006	3255 uw_Basis_time uw_Basis_now(uw_context ctx) {
adamc@1006	3256 return time(NULL);
adamc@1006	3257 }
adamc@1061	3258
adamc@1061	3259 void uw_get_global(uw_context ctx, char name) {
adamc@1061	3260 int i;
adamc@1061	3261
adamc@1061	3262 for (i = 0; i < ctx->n_globals; ++i)
adamc@1061	3263 if (!strcmp(name, ctx->globals[i].name))
adamc@1061	3264 return ctx->globals[i].data;
adamc@1061	3265
adamc@1061	3266 return NULL;
adamc@1061	3267 }
adamc@1061	3268
adamc@1113	3269 size_t uw_globals_max = SIZE_MAX;
adamc@1113	3270
adamc@1061	3271 void uw_set_global(uw_context ctx, char name, void data, void (free)(void)) {
adamc@1061	3272 int i;
adamc@1061	3273
adamc@1061	3274 for (i = 0; i < ctx->n_globals; ++i)
adamc@1061	3275 if (!strcmp(name, ctx->globals[i].name)) {
adamc@1089	3276 if (ctx->globals[i].free)
adamc@1061	3277 ctx->globals[i].free(ctx->globals[i].data);
adamc@1061	3278 ctx->globals[i].data = data;
adamc@1061	3279 ctx->globals[i].free = free;
adamc@1061	3280 return;
adamc@1061	3281 }
adamc@1089	3282
adamc@1113	3283 if (ctx->n_globals+1 > uw_globals_max)
adamc@1113	3284 uw_error(ctx, FATAL, "Exceeded limit on number of globals");
adamc@1113	3285
adamc@1061	3286 ++ctx->n_globals;
adamc@1061	3287 ctx->globals = realloc(ctx->globals, ctx->n_globals * sizeof(global));
adamc@1061	3288 ctx->globals[ctx->n_globals-1].name = name;
adamc@1061	3289 ctx->globals[ctx->n_globals-1].data = data;
adamc@1061	3290 ctx->globals[ctx->n_globals-1].free = free;
adamc@1061	3291 }
adamc@1061	3292
adamc@1061	3293 uw_Basis_bool uw_Basis_isalnum(uw_context ctx, uw_Basis_char c) {
adamc@1063	3294 return !!isalnum(c);
adamc@1061	3295 }
adamc@1061	3296
adamc@1061	3297 uw_Basis_bool uw_Basis_isalpha(uw_context ctx, uw_Basis_char c) {
adamc@1063	3298 return !!isalpha(c);
adamc@1061	3299 }
adamc@1061	3300
adamc@1061	3301 uw_Basis_bool uw_Basis_isblank(uw_context ctx, uw_Basis_char c) {
adamc@1063	3302 return !!isblank(c);
adamc@1061	3303 }
adamc@1061	3304
adamc@1061	3305 uw_Basis_bool uw_Basis_iscntrl(uw_context ctx, uw_Basis_char c) {
adamc@1063	3306 return !!iscntrl(c);
adamc@1061	3307 }
adamc@1061	3308
adamc@1061	3309 uw_Basis_bool uw_Basis_isdigit(uw_context ctx, uw_Basis_char c) {
adamc@1063	3310 return !!isdigit(c);
adamc@1061	3311 }
adamc@1061	3312
adamc@1061	3313 uw_Basis_bool uw_Basis_isgraph(uw_context ctx, uw_Basis_char c) {
adamc@1063	3314 return !!isgraph(c);
adamc@1061	3315 }
adamc@1061	3316
adamc@1061	3317 uw_Basis_bool uw_Basis_islower(uw_context ctx, uw_Basis_char c) {
adamc@1063	3318 return !!islower(c);
adamc@1061	3319 }
adamc@1061	3320
adamc@1061	3321 uw_Basis_bool uw_Basis_isprint(uw_context ctx, uw_Basis_char c) {
adamc@1063	3322 return !!isprint(c);
adamc@1061	3323 }
adamc@1061	3324
adamc@1061	3325 uw_Basis_bool uw_Basis_ispunct(uw_context ctx, uw_Basis_char c) {
adamc@1063	3326 return !!ispunct(c);
adamc@1061	3327 }
adamc@1061	3328
adamc@1061	3329 uw_Basis_bool uw_Basis_isspace(uw_context ctx, uw_Basis_char c) {
adamc@1063	3330 return !!isspace(c);
adamc@1061	3331 }
adamc@1063	3332
adamc@1061	3333 uw_Basis_bool uw_Basis_isupper(uw_context ctx, uw_Basis_char c) {
adamc@1063	3334 return !!isupper(c);
adamc@1061	3335 }
adamc@1061	3336
adamc@1061	3337 uw_Basis_bool uw_Basis_isxdigit(uw_context ctx, uw_Basis_char c) {
adamc@1063	3338 return !!isxdigit(c);
adamc@1061	3339 }
adamc@1061	3340
adamc@1061	3341 uw_Basis_char uw_Basis_tolower(uw_context ctx, uw_Basis_char c) {
adamc@1061	3342 return tolower(c);
adamc@1061	3343 }
adamc@1061	3344
adamc@1061	3345 uw_Basis_char uw_Basis_toupper(uw_context ctx, uw_Basis_char c) {
adamc@1061	3346 return toupper(c);
adamc@1061	3347 }
adamc@1066	3348
adamc@1066	3349 uw_Basis_string uw_Basis_currentUrl(uw_context ctx) {
adamc@1066	3350 return ctx->current_url;
adamc@1066	3351 }
adamc@1066	3352
adamc@1066	3353 void uw_set_currentUrl(uw_context ctx, char *s) {
adamc@1066	3354 ctx->current_url = s;
adamc@1066	3355 }
adamc@1114	3356
adamc@1114	3357 void uw_set_deadline(uw_context ctx, int n) {
adamc@1114	3358 ctx->deadline = n;
adamc@1114	3359 }
adamc@1114	3360
adamc@1114	3361 void uw_check_deadline(uw_context ctx) {
adamc@1114	3362 if (uw_time > ctx->deadline)
adamc@1114	3363 uw_error(ctx, FATAL, "Maximum running time exceeded");
adamc@1114	3364 }
adamc@1115	3365
adamc@1115	3366 size_t uw_database_max = SIZE_MAX;

Mercurial > urweb

annotate src/c/urweb.c @ 1115:150465f2895c