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

annotate src/c/urweb.c @ 1113:40d48a2b78a7

Memory limits

author	Adam Chlipala <adamc@hcoop.net>
date	Sun, 03 Jan 2010 15:32:11 -0500
parents	7fc4e0087e50
children	01b6c7144a44

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

Mercurial > urweb

annotate src/c/urweb.c @ 1113:40d48a2b78a7