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

annotate src/c/urweb.c @ 1329:9be9da2df74b

Clarifying some C FFI details in manual

author	Adam Chlipala <adam@chlipala.net>
date	Sat, 11 Dec 2010 11:00:05 -0500
parents	1cc67fdac4d3
children	452b14d88a10

rev	line source
adamc@1268	1 #include "config.h"
adamc@1268	2
adamc@117	3 #include <stdlib.h>
adamc@102	4 #include <stdio.h>
adamc@117	5 #include <string.h>
adamc@457	6 #include <strings.h>
adamc@106	7 #include <ctype.h>
adamc@167	8 #include <setjmp.h>
adamc@167	9 #include <stdarg.h>
adamc@682	10 #include <assert.h>
adamc@741	11 #include <ctype.h>
adamc@1114	12 #include <limits.h>
adamc@1113	13 #include <stdint.h>
adamc@1094	14 #include <sys/types.h>
adamc@1094	15 #include <sys/socket.h>
adamc@102	16
adamc@667	17 #include <pthread.h>
adamc@667	18
adamc@102	19 #include "types.h"
adamc@102	20
adamc@311	21 uw_unit uw_unit_v = {};
adamc@102	22
adamc@667	23
adamc@667	24 // Socket extras
adamc@667	25
adamc@863	26 int uw_really_send(int sock, const void *buf, ssize_t len) {
adamc@667	27 while (len > 0) {
adamc@856	28 ssize_t n = send(sock, buf, len, 0);
adamc@856	29
adamc@856	30 if (n < 0)
adamc@856	31 return n;
adamc@856	32
adamc@856	33 buf += n;
adamc@856	34 len -= n;
adamc@856	35 }
adamc@856	36
adamc@856	37 return 0;
adamc@856	38 }
adamc@856	39
adamc@856	40 int uw_really_write(int fd, const void *buf, size_t len) {
adamc@856	41 while (len > 0) {
adamc@856	42 ssize_t n = write(fd, buf, len);
adamc@667	43
adamc@667	44 if (n < 0)
adamc@667	45 return n;
adamc@667	46
adamc@667	47 buf += n;
adamc@667	48 len -= n;
adamc@667	49 }
adamc@667	50
adamc@667	51 return 0;
adamc@667	52 }
adamc@667	53
adamc@667	54
adamc@667	55 // Buffers
adamc@667	56
adamc@667	57 typedef struct {
adamc@1113	58 size_t max;
adamc@667	59 char start, front, *back;
adamc@667	60 } buf;
adamc@667	61
adamc@1113	62 static void buf_init(size_t max, buf *b, size_t s) {
adamc@1113	63 b->max = max;
adamc@667	64 b->front = b->start = malloc(s);
adamc@667	65 b->back = b->front + s;
adamc@667	66 }
adamc@667	67
adamc@667	68 static void buf_free(buf *b) {
adamc@667	69 free(b->start);
adamc@667	70 }
adamc@667	71
adamc@667	72 static void buf_reset(buf *b) {
adamc@667	73 b->front = b->start;
adamc@667	74 }
adamc@667	75
adamc@1113	76 static int buf_check(buf *b, size_t extra) {
adamc@667	77 if (b->back - b->front < extra) {
adamc@667	78 size_t desired = b->front - b->start + extra, next;
adamc@667	79 char *new_heap;
adamc@667	80
adamc@667	81 next = b->back - b->start;
adamc@667	82 if (next == 0)
adamc@667	83 next = 1;
adamc@667	84 for (; next < desired; next *= 2);
adamc@667	85
adamc@1134	86 if (next > b->max) {
adamc@1113	87 if (desired <= b->max)
adamc@1113	88 next = desired;
adamc@1113	89 else
adamc@1113	90 return 1;
adamc@1134	91 }
adamc@1113	92
adamc@667	93 new_heap = realloc(b->start, next);
adamc@667	94 b->front = new_heap + (b->front - b->start);
adamc@667	95 b->back = new_heap + next;
adamc@667	96 b->start = new_heap;
adamc@667	97 }
adamc@1113	98
adamc@1113	99 return 0;
adamc@1113	100 }
adamc@1113	101
adamc@1113	102 __attribute__((noreturn)) void uw_error(uw_context, failure_kind, const char *, ...);
adamc@1113	103
adamc@1113	104 static void ctx_buf_check(uw_context ctx, const char kind, buf b, size_t extra) {
adamc@1113	105 if (buf_check(b, extra))
adamc@1113	106 uw_error(ctx, FATAL, "Memory limit exceeded (%s)", kind);
adamc@667	107 }
adamc@667	108
adamc@667	109 static size_t buf_used(buf *b) {
adamc@667	110 return b->front - b->start;
adamc@667	111 }
adamc@667	112
adamc@667	113 static size_t buf_avail(buf *b) {
adamc@667	114 return b->back - b->start;
adamc@667	115 }
adamc@667	116
adamc@1113	117 static int buf_append(buf b, const char s, size_t len) {
adamc@1113	118 if (buf_check(b, len+1))
adamc@1113	119 return 1;
adamc@1113	120
adamc@1113	121 memcpy(b->front, s, len);
adamc@1113	122 b->front += len;
adamc@1113	123 *b->front = 0;
adamc@1113	124
adamc@1113	125 return 0;
adamc@1113	126 }
adamc@1113	127
adamc@1113	128 static void ctx_buf_append(uw_context ctx, const char kind, buf b, const char *s, size_t len) {
adamc@1113	129 ctx_buf_check(ctx, kind, b, len+1);
adamc@1113	130
adamc@668	131 memcpy(b->front, s, len);
adamc@668	132 b->front += len;
adamc@672	133 *b->front = 0;
adamc@668	134 }
adamc@667	135
adamc@668	136
adamc@672	137 // Persistent state types
adamc@667	138
adamc@667	139 typedef enum { UNUSED, USED } usage;
adamc@667	140
adamc@667	141 typedef struct client {
adamc@682	142 unsigned id;
adamc@667	143 usage mode;
adamc@682	144 int pass;
adamc@682	145 struct client *next;
adamc@689	146 pthread_mutex_t lock, pull_lock;
adamc@682	147 buf msgs;
adamc@682	148 int sock;
adamc@863	149 int (send)(int sockfd, const void buf, ssize_t len);
adamc@863	150 int (*close)(int fd);
adamc@682	151 time_t last_contact;
adamc@682	152 unsigned n_channels;
adamc@685	153 unsigned refcount;
adamc@1121	154 void *data;
adamc@667	155 } client;
adamc@667	156
adamc@672	157
adamc@672	158 // Persistent client state
adamc@672	159
adamc@682	160 static client *clients, clients_free, *clients_used;
adamc@682	161 static unsigned n_clients;
adamc@667	162
adamc@667	163 static pthread_mutex_t clients_mutex = PTHREAD_MUTEX_INITIALIZER;
adamc@667	164
adamc@1113	165 size_t uw_messages_max = SIZE_MAX;
adamc@1113	166 size_t uw_clients_max = SIZE_MAX;
adamc@1113	167
adamc@1121	168 void *uw_init_client_data();
adamc@1121	169 void uw_free_client_data(void *);
adamc@1121	170 void uw_copy_client_data(void dst, void src);
adamc@1121	171
adamc@682	172 static client *new_client() {
adamc@667	173 client *c;
adamc@667	174
adamc@667	175 pthread_mutex_lock(&clients_mutex);
adamc@667	176
adamc@667	177 if (clients_free) {
adamc@667	178 c = clients_free;
adamc@682	179 clients_free = clients_free->next;
adamc@667	180 }
adamc@1113	181 else if (n_clients >= uw_clients_max)
adamc@1113	182 return NULL;
adamc@667	183 else {
adamc@667	184 ++n_clients;
adamc@667	185 clients = realloc(clients, sizeof(client) * n_clients);
adamc@667	186 c = malloc(sizeof(client));
adamc@667	187 c->id = n_clients-1;
adamc@682	188 pthread_mutex_init(&c->lock, NULL);
adamc@689	189 pthread_mutex_init(&c->pull_lock, NULL);
adamc@1113	190 buf_init(uw_messages_max, &c->msgs, 0);
adamc@667	191 clients[n_clients-1] = c;
adamc@667	192 }
adamc@667	193
adamc@682	194 pthread_mutex_lock(&c->lock);
adamc@667	195 c->mode = USED;
adamc@682	196 c->pass = rand();
adamc@682	197 c->sock = -1;
adamc@682	198 c->last_contact = time(NULL);
adamc@682	199 buf_reset(&c->msgs);
adamc@682	200 c->n_channels = 0;
adamc@685	201 c->refcount = 0;
adamc@1121	202 c->data = uw_init_client_data();
adamc@682	203 pthread_mutex_unlock(&c->lock);
adamc@682	204
adamc@682	205 c->next = clients_used;
adamc@682	206 clients_used = c;
adamc@667	207
adamc@667	208 pthread_mutex_unlock(&clients_mutex);
adamc@667	209
adamc@667	210 return c;
adamc@667	211 }
adamc@667	212
adamc@685	213 static void use_client(client *c) {
adamc@685	214 pthread_mutex_lock(&c->lock);
adamc@685	215 ++c->refcount;
adamc@685	216 pthread_mutex_unlock(&c->lock);
adamc@689	217 pthread_mutex_lock(&c->pull_lock);
adamc@685	218 }
adamc@685	219
adamc@685	220 static void release_client(client *c) {
adamc@689	221 pthread_mutex_unlock(&c->pull_lock);
adamc@685	222 pthread_mutex_lock(&c->lock);
adamc@685	223 --c->refcount;
adamc@685	224 pthread_mutex_unlock(&c->lock);
adamc@689	225
adamc@685	226 }
adamc@685	227
adamc@856	228 static const char begin_msgs[] = "Content-type: text/plain\r\n\r\n";
adamc@667	229
adamc@682	230 static client *find_client(unsigned id) {
adamc@667	231 client *c;
adamc@667	232
adamc@667	233 pthread_mutex_lock(&clients_mutex);
adamc@667	234
adamc@667	235 if (id >= n_clients) {
adamc@667	236 pthread_mutex_unlock(&clients_mutex);
adamc@668	237 return NULL;
adamc@667	238 }
adamc@667	239
adamc@667	240 c = clients[id];
adamc@667	241
adamc@668	242 pthread_mutex_unlock(&clients_mutex);
adamc@668	243 return c;
adamc@668	244 }
adamc@668	245
adamc@856	246 static char *on_success = "HTTP/1.1 200 OK\r\n";
adamc@1065	247 static char *on_redirect = "HTTP/1.1 303 See Other\r\n";
adamc@856	248
adamc@856	249 void uw_set_on_success(char *s) {
adamc@856	250 on_success = s;
adamc@856	251 }
adamc@856	252
adamc@863	253 void uw_client_connect(unsigned id, int pass, int sock,
adamc@863	254 int (send)(int sockfd, const void buf, ssize_t len),
adamc@864	255 int (*close)(int fd),
adamc@864	256 void *logger_data, uw_logger log_error) {
adamc@682	257 client *c = find_client(id);
adamc@668	258
adamc@668	259 if (c == NULL) {
adamc@667	260 close(sock);
adamc@864	261 log_error(logger_data, "Out-of-bounds client request (%u)\n", id);
adamc@667	262 return;
adamc@667	263 }
adamc@667	264
adamc@682	265 pthread_mutex_lock(&c->lock);
adamc@671	266
adamc@682	267 if (c->mode != USED) {
adamc@682	268 pthread_mutex_unlock(&c->lock);
adamc@667	269 close(sock);
adamc@864	270 log_error(logger_data, "Client request for unused slot (%u)\n", id);
adamc@667	271 return;
adamc@667	272 }
adamc@667	273
adamc@682	274 if (pass != c->pass) {
adamc@682	275 pthread_mutex_unlock(&c->lock);
adamc@682	276 close(sock);
adamc@864	277 log_error(logger_data, "Wrong client password (%u, %d)\n", id, pass);
adamc@682	278 return;
adamc@667	279 }
adamc@667	280
adamc@682	281 if (c->sock != -1) {
adamc@863	282 c->close(c->sock);
adamc@682	283 c->sock = -1;
adamc@682	284 }
adamc@667	285
adamc@682	286 c->last_contact = time(NULL);
adamc@682	287
adamc@682	288 if (buf_used(&c->msgs) > 0) {
adamc@863	289 send(sock, on_success, strlen(on_success));
adamc@863	290 send(sock, begin_msgs, sizeof(begin_msgs) - 1);
adamc@863	291 send(sock, c->msgs.start, buf_used(&c->msgs));
adamc@682	292 buf_reset(&c->msgs);
adamc@667	293 close(sock);
adamc@667	294 }
adamc@863	295 else {
adamc@682	296 c->sock = sock;
adamc@863	297 c->send = send;
adamc@863	298 c->close = close;
adamc@863	299 }
adamc@667	300
adamc@682	301 pthread_mutex_unlock(&c->lock);
adamc@667	302 }
adamc@667	303
adamc@682	304 static void free_client(client *c) {
adamc@682	305 c->mode = UNUSED;
adamc@682	306 c->pass = -1;
adamc@667	307
adamc@682	308 c->next = clients_free;
adamc@682	309 clients_free = c;
adamc@667	310 }
adamc@667	311
adamc@682	312 static uw_Basis_channel new_channel(client *c) {
adamc@682	313 uw_Basis_channel ch = {c->id, c->n_channels++};
adamc@668	314 return ch;
adamc@668	315 }
adamc@668	316
adamc@685	317 static void client_send(client c, buf msg) {
adamc@685	318 pthread_mutex_lock(&c->lock);
adamc@671	319
adamc@682	320 if (c->sock != -1) {
adamc@863	321 c->send(c->sock, on_success, strlen(on_success));
adamc@863	322 c->send(c->sock, begin_msgs, sizeof(begin_msgs) - 1);
adamc@863	323 c->send(c->sock, msg->start, buf_used(msg));
adamc@863	324 c->close(c->sock);
adamc@682	325 c->sock = -1;
adamc@1113	326 } else if (buf_append(&c->msgs, msg->start, buf_used(msg)))
adamc@1113	327 fprintf(stderr, "Client message buffer size exceeded");
adamc@671	328
adamc@685	329 pthread_mutex_unlock(&c->lock);
adamc@668	330 }
adamc@668	331
adamc@668	332
adamc@668	333 // Global entry points
adamc@668	334
adamc@1164	335 extern void uw_global_custom();
adamc@1104	336 extern void uw_init_crypto();
adamc@1104	337
adamc@668	338 void uw_global_init() {
adamc@668	339 srand(time(NULL) ^ getpid());
adamc@668	340
adamc@668	341 clients = malloc(0);
adamc@1104	342
adamc@1164	343 uw_global_custom();
adamc@1104	344 uw_init_crypto();
adamc@1094	345 }
adamc@1094	346
adamc@1094	347 void uw_app_init(uw_app *app) {
adamc@1094	348 app->client_init();
adamc@668	349 }
adamc@668	350
adam@1308	351 int uw_time = 0, uw_time_max = 0;
adamc@1114	352
adamc@668	353
adamc@667	354 // Single-request state
adamc@667	355
adamc@323	356 typedef struct regions {
adamc@323	357 struct regions *next;
adamc@323	358 } regions;
adamc@323	359
adamc@425	360 typedef struct {
adamc@425	361 void (func)(void);
adamc@425	362 void *arg;
adamc@425	363 } cleanup;
adamc@425	364
adamc@671	365 typedef struct {
adamc@682	366 unsigned client;
adamc@671	367 buf msgs;
adamc@682	368 } delta;
adamc@671	369
adamc@737	370 typedef enum {
adamc@759	371 UNSET, NORMAL, FIL, SUBFORM, SUBFORMS, ENTRY
adamc@737	372 } input_kind;
adamc@737	373
adamc@756	374 typedef struct input {
adamc@737	375 input_kind kind;
adamc@737	376 union {
adamc@737	377 char *normal;
adamc@739	378 uw_Basis_file file;
adamc@756	379 struct {
adamc@759	380 struct input fields, parent;
adamc@756	381 } subform;
adamc@759	382 struct {
adamc@759	383 struct input entries, parent;
adamc@759	384 } subforms;
adamc@759	385 struct {
adamc@759	386 struct input fields, next, *parent;
adamc@759	387 } entry;
adamc@737	388 } data;
adamc@737	389 } input;
adamc@737	390
adamc@771	391 typedef struct {
adamc@771	392 void *data;
adam@1327	393 uw_callback commit, rollback;
adam@1327	394 uw_callback_with_retry free;
adamc@771	395 } transactional;
adamc@771	396
adamc@1061	397 typedef struct {
adamc@1061	398 char *name;
adamc@1061	399 void *data;
adamc@1061	400 void (free)(void);
adamc@1061	401 } global;
adamc@1061	402
adamc@311	403 struct uw_context {
adamc@1094	404 uw_app *app;
adamc@1094	405
adamc@854	406 char (get_header)(void , const char );
adamc@854	407 void *get_header_data;
adamc@457	408
adamc@666	409 buf outHeaders, page, heap, script;
adamc@1065	410 int returning_indirectly;
adamc@759	411 input inputs, subinputs, *cur_container;
adamc@1094	412 size_t sz_inputs, n_subinputs, used_subinputs;
adamc@167	413
adamc@565	414 int source_count;
adamc@562	415
adamc@272	416 void *db;
adamc@272	417
adamc@167	418 jmp_buf jmp_buf;
adamc@167	419
adamc@323	420 regions *regions;
adamc@323	421
adamc@425	422 cleanup cleanup, cleanup_front, *cleanup_back;
adamc@425	423
adamc@1094	424 const char *script_header;
adamc@643	425
adamc@736	426 int needs_push, needs_sig;
adamc@693	427
adamc@682	428 size_t n_deltas, used_deltas;
adamc@682	429 delta *deltas;
adamc@671	430
adamc@682	431 client *client;
adamc@682	432
adamc@771	433 transactional *transactionals;
adamc@771	434 size_t n_transactionals, used_transactionals;
adamc@771	435
adamc@1061	436 global *globals;
adamc@1061	437 size_t n_globals;
adamc@1061	438
adamc@1066	439 char *current_url;
adamc@1066	440
adamc@1114	441 int deadline;
adamc@1114	442
adamc@1121	443 void *client_data;
adamc@1121	444
adamc@167	445 char error_message[ERROR_BUF_LEN];
adamc@117	446 };
adamc@117	447
adamc@1113	448 size_t uw_headers_max = SIZE_MAX;
adamc@1113	449 size_t uw_page_max = SIZE_MAX;
adamc@1113	450 size_t uw_heap_max = SIZE_MAX;
adamc@1113	451 size_t uw_script_max = SIZE_MAX;
adamc@1113	452
adamc@687	453 uw_context uw_init() {
adamc@311	454 uw_context ctx = malloc(sizeof(struct uw_context));
adamc@136	455
adamc@1094	456 ctx->app = NULL;
adamc@1094	457
adamc@854	458 ctx->get_header = NULL;
adamc@854	459 ctx->get_header_data = NULL;
adamc@457	460
adamc@1113	461 buf_init(uw_headers_max, &ctx->outHeaders, 0);
adamc@1113	462 buf_init(uw_page_max, &ctx->page, 0);
adamc@1065	463 ctx->returning_indirectly = 0;
adamc@1113	464 buf_init(uw_heap_max, &ctx->heap, 0);
adamc@1113	465 buf_init(uw_script_max, &ctx->script, 1);
adamc@667	466 ctx->script.start[0] = 0;
adamc@136	467
adamc@1094	468 ctx->inputs = malloc(0);
adamc@759	469 ctx->cur_container = NULL;
adamc@756	470 ctx->subinputs = malloc(0);
adamc@1094	471 ctx->sz_inputs = ctx->n_subinputs = ctx->used_subinputs = 0;
adamc@144	472
adamc@272	473 ctx->db = NULL;
adamc@272	474
adamc@323	475 ctx->regions = NULL;
adamc@323	476
adamc@425	477 ctx->cleanup_front = ctx->cleanup_back = ctx->cleanup = malloc(0);
adamc@425	478
adamc@643	479 ctx->script_header = "";
adamc@693	480 ctx->needs_push = 0;
adamc@736	481 ctx->needs_sig = 0;
adamc@1104	482
adamc@565	483 ctx->source_count = 0;
adamc@562	484
adamc@682	485 ctx->n_deltas = ctx->used_deltas = 0;
adamc@671	486 ctx->deltas = malloc(0);
adamc@671	487
adamc@700	488 ctx->client = NULL;
adamc@700	489
adamc@700	490 ctx->error_message[0] = 0;
adamc@700	491
adamc@771	492 ctx->transactionals = malloc(0);
adamc@771	493 ctx->n_transactionals = ctx->used_transactionals = 0;
adamc@771	494
adamc@1061	495 ctx->globals = malloc(0);
adamc@1061	496 ctx->n_globals = 0;
adamc@1061	497
adamc@1066	498 ctx->current_url = "";
adamc@1066	499
adamc@1114	500 ctx->deadline = INT_MAX;
adamc@1114	501
adamc@1121	502 ctx->client_data = uw_init_client_data();
adamc@1121	503
adamc@117	504 return ctx;
adamc@106	505 }
adamc@106	506
adamc@1113	507 size_t uw_inputs_max = SIZE_MAX;
adamc@1113	508
adamc@1121	509 uw_app *uw_get_app(uw_context ctx) {
adamc@1121	510 return ctx->app;
adamc@1121	511 }
adamc@1121	512
adamc@1113	513 int uw_set_app(uw_context ctx, uw_app *app) {
adamc@1094	514 ctx->app = app;
adamc@1094	515
adamc@1105	516 if (app && app->inputs_len > ctx->sz_inputs) {
adamc@1113	517 if (app->inputs_len > uw_inputs_max)
adamc@1113	518 return 1;
adamc@1113	519
adamc@1094	520 ctx->sz_inputs = app->inputs_len;
adamc@1094	521 ctx->inputs = realloc(ctx->inputs, ctx->sz_inputs * sizeof(input));
adamc@1094	522 memset(ctx->inputs, 0, ctx->sz_inputs * sizeof(input));
adamc@1094	523 }
adamc@1134	524
adamc@1134	525 return 0;
adamc@1094	526 }
adamc@1094	527
adamc@1121	528 void uw_set_client_data(uw_context ctx, void *data) {
adamc@1121	529 uw_copy_client_data(ctx->client_data, data);
adamc@1121	530 }
adamc@1121	531
adamc@311	532 void uw_set_db(uw_context ctx, void *db) {
adamc@272	533 ctx->db = db;
adamc@272	534 }
adamc@272	535
adamc@311	536 void *uw_get_db(uw_context ctx) {
adamc@272	537 return ctx->db;
adamc@272	538 }
adamc@272	539
adamc@311	540 void uw_free(uw_context ctx) {
adamc@671	541 size_t i;
adamc@671	542
adamc@666	543 buf_free(&ctx->outHeaders);
adamc@666	544 buf_free(&ctx->script);
adamc@666	545 buf_free(&ctx->page);
adamc@666	546 buf_free(&ctx->heap);
adamc@144	547 free(ctx->inputs);
adamc@756	548 free(ctx->subinputs);
adamc@425	549 free(ctx->cleanup);
adamc@771	550 free(ctx->transactionals);
adamc@1121	551 uw_free_client_data(ctx->client_data);
adamc@671	552
adamc@682	553 for (i = 0; i < ctx->n_deltas; ++i)
adamc@671	554 buf_free(&ctx->deltas[i].msgs);
adamc@671	555
adamc@1061	556 for (i = 0; i < ctx->n_globals; ++i)
adamc@1089	557 if (ctx->globals[i].free)
adamc@1089	558 ctx->globals[i].free(ctx->globals[i].data);
adamc@1061	559
adamc@136	560 free(ctx);
adamc@136	561 }
adamc@136	562
adamc@562	563 void uw_reset_keep_error_message(uw_context ctx) {
adamc@666	564 buf_reset(&ctx->outHeaders);
adamc@666	565 buf_reset(&ctx->script);
adamc@667	566 ctx->script.start[0] = 0;
adamc@666	567 buf_reset(&ctx->page);
adamc@1065	568 ctx->returning_indirectly = 0;
adamc@666	569 buf_reset(&ctx->heap);
adamc@323	570 ctx->regions = NULL;
adamc@425	571 ctx->cleanup_front = ctx->cleanup;
adamc@565	572 ctx->source_count = 0;
adamc@682	573 ctx->used_deltas = 0;
adamc@682	574 ctx->client = NULL;
adamc@759	575 ctx->cur_container = NULL;
adamc@771	576 ctx->used_transactionals = 0;
adamc@1117	577 ctx->script_header = "";
adamc@167	578 }
adamc@167	579
adamc@562	580 void uw_reset_keep_request(uw_context ctx) {
adamc@562	581 uw_reset_keep_error_message(ctx);
adamc@562	582 ctx->error_message[0] = 0;
adamc@167	583 }
adamc@167	584
adamc@311	585 void uw_reset(uw_context ctx) {
adamc@311	586 uw_reset_keep_request(ctx);
adamc@1105	587 if (ctx->app)
adamc@1105	588 memset(ctx->inputs, 0, ctx->app->inputs_len * sizeof(input));
adamc@756	589 memset(ctx->subinputs, 0, ctx->n_subinputs * sizeof(input));
adamc@756	590 ctx->used_subinputs = 0;
adamc@144	591 }
adamc@144	592
adamc@311	593 failure_kind uw_begin_init(uw_context ctx) {
adamc@272	594 int r = setjmp(ctx->jmp_buf);
adamc@272	595
adamc@1105	596 if (r == 0 && ctx->app)
adamc@1094	597 ctx->app->db_init(ctx);
adamc@272	598
adamc@272	599 return r;
adamc@272	600 }
adamc@272	601
adamc@1118	602 void uw_close(uw_context ctx) {
adamc@1118	603 ctx->app->db_close(ctx);
adamc@1118	604 }
adamc@1118	605
adamc@854	606 void uw_set_headers(uw_context ctx, char (get_header)(void , const char ), void *get_header_data) {
adamc@854	607 ctx->get_header = get_header;
adamc@854	608 ctx->get_header_data = get_header_data;
adamc@742	609 }
adamc@742	610
adamc@801	611 static void uw_set_error(uw_context ctx, const char *fmt, ...) {
adamc@801	612 va_list ap;
adamc@801	613 va_start(ap, fmt);
adamc@801	614
adamc@801	615 vsnprintf(ctx->error_message, ERROR_BUF_LEN, fmt, ap);
adamc@801	616 }
adamc@801	617
adamc@1131	618 int uw_has_error(uw_context ctx) {
adamc@1131	619 return ctx->error_message[0] != 0;
adamc@1131	620 }
adamc@1131	621
adamc@311	622 __attribute__((noreturn)) void uw_error(uw_context ctx, failure_kind fk, const char *fmt, ...) {
adamc@425	623 cleanup *cl;
adamc@425	624
adamc@167	625 va_list ap;
adamc@167	626 va_start(ap, fmt);
adamc@167	627
adamc@167	628 vsnprintf(ctx->error_message, ERROR_BUF_LEN, fmt, ap);
adamc@167	629
adamc@425	630 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adamc@425	631 cl->func(cl->arg);
adamc@425	632
adamc@425	633 ctx->cleanup_front = ctx->cleanup;
adamc@425	634
adamc@190	635 longjmp(ctx->jmp_buf, fk);
adamc@167	636 }
adamc@167	637
adamc@1113	638 size_t uw_cleanup_max = SIZE_MAX;
adamc@1113	639
adamc@425	640 void uw_push_cleanup(uw_context ctx, void (func)(void ), void *arg) {
adamc@425	641 if (ctx->cleanup_front >= ctx->cleanup_back) {
adamc@425	642 int len = ctx->cleanup_back - ctx->cleanup, newLen;
adamc@425	643 if (len == 0)
adamc@425	644 newLen = 1;
adamc@425	645 else
adamc@428	646 newLen = len * 2;
adamc@1113	647
adamc@1134	648 if (newLen > uw_cleanup_max) {
adamc@1113	649 if (len+1 <= uw_cleanup_max)
adamc@1113	650 newLen = uw_cleanup_max;
adamc@1113	651 else
adamc@1113	652 uw_error(ctx, FATAL, "Exceeded limit on number of cleanup handlers");
adamc@1134	653 }
adamc@1113	654
adamc@470	655 ctx->cleanup = realloc(ctx->cleanup, newLen * sizeof(cleanup));
adamc@425	656 ctx->cleanup_front = ctx->cleanup + len;
adamc@425	657 ctx->cleanup_back = ctx->cleanup + newLen;
adamc@425	658 }
adamc@425	659
adamc@425	660 ctx->cleanup_front->func = func;
adamc@425	661 ctx->cleanup_front->arg = arg;
adamc@425	662 ++ctx->cleanup_front;
adamc@425	663 }
adamc@425	664
adamc@682	665 uw_Basis_string uw_Basis_requestHeader(uw_context ctx, uw_Basis_string h) {
adamc@854	666 return ctx->get_header(ctx->get_header_data, h);
adamc@682	667 }
adamc@682	668
adamc@682	669 void uw_login(uw_context ctx) {
adamc@693	670 if (ctx->needs_push) {
adamc@682	671 char id_s, pass_s;
adamc@682	672
adamc@682	673 if ((id_s = uw_Basis_requestHeader(ctx, "UrWeb-Client"))
adamc@682	674 && (pass_s = uw_Basis_requestHeader(ctx, "UrWeb-Pass"))) {
adamc@682	675 unsigned id = atoi(id_s);
adamc@682	676 int pass = atoi(pass_s);
adamc@682	677 client *c = find_client(id);
adamc@682	678
adamc@682	679 if (c == NULL)
adamc@682	680 uw_error(ctx, FATAL, "Unknown client ID in HTTP headers (%s, %s)", id_s, pass_s);
adamc@682	681 else {
adamc@685	682 use_client(c);
adamc@682	683 ctx->client = c;
adamc@682	684
adamc@682	685 if (c->mode != USED)
adamc@682	686 uw_error(ctx, FATAL, "Stale client ID (%u) in subscription request", id);
adamc@682	687 if (c->pass != pass)
adamc@682	688 uw_error(ctx, FATAL, "Wrong client password (%u, %d) in subscription request", id, pass);
adamc@682	689 }
adamc@682	690 } else {
adamc@682	691 client *c = new_client();
adamc@1113	692
adamc@1113	693 if (c == NULL)
adamc@1113	694 uw_error(ctx, FATAL, "Limit exceeded on number of message-passing clients");
adamc@1113	695
adamc@685	696 use_client(c);
adamc@1121	697 uw_copy_client_data(c->data, ctx->client_data);
adamc@682	698 ctx->client = c;
adamc@864	699 }
adamc@682	700 }
adamc@682	701 }
adamc@682	702
adamc@671	703 failure_kind uw_begin(uw_context ctx, char *path) {
adamc@671	704 int r = setjmp(ctx->jmp_buf);
adamc@671	705
adamc@671	706 if (r == 0) {
adamc@1094	707 if (ctx->app->db_begin(ctx))
adamc@671	708 uw_error(ctx, BOUNDED_RETRY, "Error running SQL BEGIN");
adamc@682	709
adamc@1094	710 ctx->app->handle(ctx, path);
adamc@671	711 }
adamc@671	712
adamc@671	713 return r;
adamc@671	714 }
adamc@671	715
adam@1294	716 failure_kind uw_begin_onError(uw_context ctx, char *msg) {
adam@1294	717 int r = setjmp(ctx->jmp_buf);
adam@1294	718
adam@1294	719 if (ctx->app->on_error) {
adam@1294	720 if (r == 0) {
adam@1294	721 if (ctx->app->db_begin(ctx))
adam@1294	722 uw_error(ctx, BOUNDED_RETRY, "Error running SQL BEGIN");
adam@1294	723
adam@1294	724 ctx->app->on_error(ctx, msg);
adam@1294	725 }
adam@1294	726
adam@1294	727 return r;
adam@1294	728 } else
adam@1294	729 uw_error(ctx, FATAL, "Tried to run nonexistent onError handler");
adam@1294	730 }
adam@1294	731
adamc@772	732 uw_Basis_client uw_Basis_self(uw_context ctx) {
adamc@682	733 if (ctx->client == NULL)
adamc@682	734 uw_error(ctx, FATAL, "Call to Basis.self() from page that has only server-side code");
adamc@682	735
adamc@682	736 return ctx->client->id;
adamc@682	737 }
adamc@682	738
adamc@425	739 void uw_pop_cleanup(uw_context ctx) {
adamc@425	740 if (ctx->cleanup_front == ctx->cleanup)
adamc@425	741 uw_error(ctx, FATAL, "Attempt to pop from empty cleanup action stack");
adamc@425	742
adamc@425	743 --ctx->cleanup_front;
adamc@425	744 ctx->cleanup_front->func(ctx->cleanup_front->arg);
adamc@425	745 }
adamc@425	746
adamc@311	747 char *uw_error_message(uw_context ctx) {
adamc@167	748 return ctx->error_message;
adamc@167	749 }
adamc@167	750
adamc@1115	751 void uw_set_error_message(uw_context ctx, const char *msg) {
adamc@1115	752 strncpy(ctx->error_message, msg, sizeof(ctx->error_message));
adamc@1115	753 ctx->error_message[sizeof(ctx->error_message)-1] = 0;
adamc@1115	754 }
adamc@1115	755
adamc@759	756 static input *INP(uw_context ctx) {
adamc@759	757 if (ctx->cur_container == NULL)
adamc@759	758 return ctx->inputs;
adamc@759	759 else if (ctx->cur_container->kind == SUBFORM)
adamc@759	760 return ctx->cur_container->data.subform.fields;
adamc@759	761 else if (ctx->cur_container->kind == ENTRY)
adamc@759	762 return ctx->cur_container->data.entry.fields;
adamc@759	763 else
adamc@760	764 uw_error(ctx, FATAL, "INP: Wrong kind (%d, %p)", ctx->cur_container->kind, ctx->cur_container);
adamc@759	765 }
adamc@759	766
adamc@760	767 static void adjust_pointer(input *ptr, input old_start, input *new_start, size_t len) {
adamc@760	768 if (ptr != NULL && ptr >= old_start && *ptr < old_start + len)
adamc@760	769 *ptr += new_start - old_start;
adamc@760	770 }
adamc@760	771
adamc@760	772 static void adjust_input(input x, input old_start, input *new_start, size_t len) {
adamc@759	773 switch (x->kind) {
adamc@759	774 case SUBFORM:
adamc@760	775 adjust_pointer(&x->data.subform.fields, old_start, new_start, len);
adamc@760	776 adjust_pointer(&x->data.subform.parent, old_start, new_start, len);
adamc@759	777 break;
adamc@759	778 case SUBFORMS:
adamc@760	779 adjust_pointer(&x->data.subforms.entries, old_start, new_start, len);
adamc@760	780 adjust_pointer(&x->data.subforms.parent, old_start, new_start, len);
adamc@759	781 break;
adamc@759	782 case ENTRY:
adamc@760	783 adjust_pointer(&x->data.entry.fields, old_start, new_start, len);
adamc@760	784 adjust_pointer(&x->data.entry.next, old_start, new_start, len);
adamc@760	785 adjust_pointer(&x->data.entry.parent, old_start, new_start, len);
adamc@1134	786 break;
adamc@1134	787 default:
adamc@1134	788 break;
adamc@759	789 }
adamc@759	790 }
adamc@759	791
adamc@1113	792 size_t uw_subinputs_max = SIZE_MAX;
adamc@1113	793
adamc@759	794 static input *check_input_space(uw_context ctx, size_t len) {
adamc@759	795 size_t i;
adamc@759	796 input *r;
adamc@759	797
adamc@759	798 if (ctx->used_subinputs + len >= ctx->n_subinputs) {
adamc@1113	799 if (ctx->used_subinputs + len > uw_subinputs_max)
adamc@1113	800 uw_error(ctx, FATAL, "Exceeded limit on number of subinputs");
adamc@1113	801
adamc@759	802 input new_subinputs = realloc(ctx->subinputs, sizeof(input) (ctx->used_subinputs + len));
adamc@759	803
adamc@760	804 if (ctx->subinputs != new_subinputs) {
adamc@760	805 for (i = 0; i < ctx->used_subinputs; ++i)
adamc@760	806 adjust_input(&new_subinputs[i], ctx->subinputs, new_subinputs, ctx->used_subinputs);
adamc@1094	807 for (i = 0; i < ctx->app->inputs_len; ++i)
adamc@760	808 adjust_input(&ctx->inputs[i], ctx->subinputs, new_subinputs, ctx->used_subinputs);
adamc@760	809
adamc@760	810 adjust_pointer(&ctx->cur_container, ctx->subinputs, new_subinputs, ctx->used_subinputs);
adamc@760	811
adamc@760	812 ctx->n_subinputs = ctx->used_subinputs + len;
adamc@760	813 ctx->subinputs = new_subinputs;
adamc@760	814 }
adamc@759	815 }
adamc@759	816
adamc@759	817 r = &ctx->subinputs[ctx->used_subinputs];
adamc@759	818
adamc@759	819 for (i = 0; i < len; ++i)
adamc@759	820 ctx->subinputs[ctx->used_subinputs++].kind = UNUSED;
adamc@759	821
adamc@759	822 return r;
adamc@759	823 }
adamc@756	824
adamc@801	825 int uw_set_input(uw_context ctx, const char name, char value) {
adamc@1050	826 //printf("Input name %s\n", name);
adamc@1038	827
adamc@756	828 if (!strcasecmp(name, ".b")) {
adamc@1094	829 int n = ctx->app->input_num(value);
adamc@756	830 input *inps;
adamc@756	831
adamc@801	832 if (n < 0) {
adamc@801	833 uw_set_error(ctx, "Bad subform name %s", value);
adamc@801	834 return -1;
adamc@801	835 }
adamc@801	836
adamc@1094	837 if (n >= ctx->app->inputs_len) {
adamc@801	838 uw_set_error(ctx, "For subform name %s, index %d is out of range", value, n);
adamc@801	839 return -1;
adamc@801	840 }
adamc@756	841
adamc@1094	842 inps = check_input_space(ctx, ctx->app->inputs_len);
adamc@759	843
adamc@759	844 INP(ctx)[n].kind = SUBFORM;
adamc@759	845 INP(ctx)[n].data.subform.parent = ctx->cur_container;
adamc@759	846 INP(ctx)[n].data.subform.fields = inps;
adamc@759	847 ctx->cur_container = &INP(ctx)[n];
adamc@756	848 } else if (!strcasecmp(name, ".e")) {
adamc@756	849 input *tmp;
adamc@756	850
adamc@801	851 if (ctx->cur_container == NULL) {
adamc@801	852 uw_set_error(ctx, "Unmatched subform closer");
adamc@801	853 return -1;
adamc@801	854 }
adamc@756	855
adamc@759	856 tmp = ctx->cur_container;
adamc@759	857 switch (tmp->kind) {
adamc@759	858 case SUBFORM:
adamc@759	859 ctx->cur_container = tmp->data.subform.parent;
adamc@759	860 tmp->data.subform.parent = NULL;
adamc@759	861 break;
adamc@759	862 case SUBFORMS:
adamc@759	863 ctx->cur_container = tmp->data.subforms.parent;
adamc@759	864 tmp->data.subforms.parent = NULL;
adamc@759	865 break;
adamc@759	866 case ENTRY:
adamc@759	867 ctx->cur_container = tmp->data.entry.parent;
adamc@759	868 break;
adamc@759	869 default:
adamc@801	870 uw_set_error(ctx, "uw_set_input: Wrong kind");
adamc@801	871 return -1;
adamc@759	872 }
adamc@759	873 } else if (!strcasecmp(name, ".s")) {
adamc@1094	874 int n = ctx->app->input_num(value);
adamc@759	875
adamc@801	876 if (n < 0) {
adamc@801	877 uw_set_error(ctx, "Bad subforms name %s", value);
adamc@801	878 return -1;
adamc@801	879 }
adamc@801	880
adamc@1094	881 if (n >= ctx->app->inputs_len) {
adamc@801	882 uw_set_error(ctx, "For subforms name %s, index %d is out of range", value, n);
adamc@801	883 return -1;
adamc@801	884 }
adamc@759	885
adamc@759	886 INP(ctx)[n].kind = SUBFORMS;
adamc@759	887 INP(ctx)[n].data.subforms.parent = ctx->cur_container;
adamc@759	888 INP(ctx)[n].data.subforms.entries = NULL;
adamc@759	889 ctx->cur_container = &INP(ctx)[n];
adamc@759	890 } else if (!strcasecmp(name, ".i")) {
adamc@759	891 input *inps;
adamc@759	892
adamc@801	893 if (!ctx->cur_container) {
adamc@801	894 uw_set_error(ctx, "New entry without container");
adamc@801	895 return -1;
adamc@801	896 }
adamc@801	897
adamc@801	898 if (ctx->cur_container->kind != SUBFORMS) {
adamc@801	899 uw_set_error(ctx, "Bad kind for entry parent");
adamc@801	900 return -1;
adamc@801	901 }
adamc@759	902
adamc@1094	903 inps = check_input_space(ctx, ctx->app->inputs_len + 1);
adamc@759	904
adamc@759	905 inps->kind = ENTRY;
adamc@759	906 inps->data.entry.parent = ctx->cur_container;
adamc@759	907 inps->data.entry.next = ctx->cur_container->data.subforms.entries;
adamc@759	908 ctx->cur_container->data.subforms.entries = inps;
adamc@759	909
adamc@759	910 inps->data.entry.fields = inps+1;
adamc@759	911 ctx->cur_container = inps;
adamc@756	912 } else {
adamc@1094	913 int n = ctx->app->input_num(name);
adamc@756	914
adamc@801	915 if (n < 0) {
adamc@1038	916 if (!strcmp(name, "null"))
adamc@1038	917 return 0;
adamc@801	918 uw_set_error(ctx, "Bad input name %s", name);
adamc@801	919 return -1;
adamc@801	920 }
adamc@801	921
adamc@1094	922 if (n >= ctx->app->inputs_len) {
adamc@801	923 uw_set_error(ctx, "For input name %s, index %d is out of range", name, n);
adamc@801	924 return -1;
adamc@801	925 }
adamc@756	926
adamc@756	927 INP(ctx)[n].kind = NORMAL;
adamc@756	928 INP(ctx)[n].data.normal = value;
adamc@756	929 }
adamc@801	930
adamc@801	931 return 0;
adamc@144	932 }
adamc@144	933
adamc@311	934 char *uw_get_input(uw_context ctx, int n) {
adamc@169	935 if (n < 0)
adamc@311	936 uw_error(ctx, FATAL, "Negative input index %d", n);
adamc@1094	937 if (n >= ctx->app->inputs_len)
adamc@311	938 uw_error(ctx, FATAL, "Out-of-bounds input index %d", n);
adamc@737	939
adamc@756	940 switch (INP(ctx)[n].kind) {
adamc@737	941 case UNSET:
adamc@737	942 return NULL;
adamc@739	943 case FIL:
adamc@739	944 uw_error(ctx, FATAL, "Tried to read a file form input as normal");
adamc@756	945 case SUBFORM:
adamc@756	946 uw_error(ctx, FATAL, "Tried to read a subform form input as normal");
adamc@759	947 case SUBFORMS:
adamc@759	948 uw_error(ctx, FATAL, "Tried to read a subforms form input as normal");
adamc@759	949 case ENTRY:
adamc@759	950 uw_error(ctx, FATAL, "Tried to read an entry form input as normal");
adamc@737	951 case NORMAL:
adamc@756	952 return INP(ctx)[n].data.normal;
adamc@737	953 default:
adamc@737	954 uw_error(ctx, FATAL, "Impossible input kind");
adamc@737	955 }
adamc@138	956 }
adamc@138	957
adamc@311	958 char *uw_get_optional_input(uw_context ctx, int n) {
adamc@190	959 if (n < 0)
adamc@311	960 uw_error(ctx, FATAL, "Negative input index %d", n);
adamc@1094	961 if (n >= ctx->app->inputs_len)
adamc@311	962 uw_error(ctx, FATAL, "Out-of-bounds input index %d", n);
adamc@737	963
adamc@756	964 switch (INP(ctx)[n].kind) {
adamc@737	965 case UNSET:
adamc@737	966 return "";
adamc@739	967 case FIL:
adamc@739	968 uw_error(ctx, FATAL, "Tried to read a file form input as normal");
adamc@756	969 case SUBFORM:
adamc@756	970 uw_error(ctx, FATAL, "Tried to read a subform form input as normal");
adamc@759	971 case SUBFORMS:
adamc@759	972 uw_error(ctx, FATAL, "Tried to read a subforms form input as normal");
adamc@759	973 case ENTRY:
adamc@759	974 uw_error(ctx, FATAL, "Tried to read an entry form input as normal");
adamc@737	975 case NORMAL:
adamc@756	976 return INP(ctx)[n].data.normal;
adamc@737	977 default:
adamc@737	978 uw_error(ctx, FATAL, "Impossible input kind");
adamc@737	979 }
adamc@737	980 }
adamc@737	981
adamc@801	982 int uw_set_file_input(uw_context ctx, const char *name, uw_Basis_file f) {
adamc@1094	983 int n = ctx->app->input_num(name);
adamc@737	984
adamc@801	985 if (n < 0) {
adamc@801	986 uw_set_error(ctx, "Bad file input name %s", name);
adamc@801	987 return -1;
adamc@801	988 }
adamc@801	989
adamc@1094	990 if (n >= ctx->app->inputs_len) {
adamc@801	991 uw_set_error(ctx, "For file input name %s, index %d is out of range", name, n);
adamc@801	992 return -1;
adamc@801	993 }
adamc@737	994
adamc@739	995 ctx->inputs[n].kind = FIL;
adamc@739	996 ctx->inputs[n].data.file = f;
adamc@801	997
adamc@801	998 return 0;
adamc@737	999 }
adamc@737	1000
adamc@739	1001 void *uw_malloc(uw_context ctx, size_t len);
adamc@739	1002
adamc@739	1003 uw_Basis_file uw_get_file_input(uw_context ctx, int n) {
adamc@737	1004 if (n < 0)
adamc@737	1005 uw_error(ctx, FATAL, "Negative file input index %d", n);
adamc@1094	1006 if (n >= ctx->app->inputs_len)
adamc@737	1007 uw_error(ctx, FATAL, "Out-of-bounds file input index %d", n);
adamc@737	1008
adamc@756	1009 switch (INP(ctx)[n].kind) {
adamc@737	1010 case UNSET:
adamc@737	1011 {
adamc@739	1012 char *data = uw_malloc(ctx, 0);
adamc@740	1013 uw_Basis_file f = {NULL, "", {0, data}};
adamc@739	1014 return f;
adamc@737	1015 }
adamc@739	1016 case FIL:
adamc@756	1017 return INP(ctx)[n].data.file;
adamc@737	1018 case NORMAL:
adamc@737	1019 uw_error(ctx, FATAL, "Tried to read a normal form input as files");
adamc@756	1020 case SUBFORM:
adamc@756	1021 uw_error(ctx, FATAL, "Tried to read a subform form input as files");
adamc@759	1022 case SUBFORMS:
adamc@759	1023 uw_error(ctx, FATAL, "Tried to read a subforms form input as files");
adamc@759	1024 case ENTRY:
adamc@759	1025 uw_error(ctx, FATAL, "Tried to read an entry form input as files");
adamc@737	1026 default:
adamc@737	1027 uw_error(ctx, FATAL, "Impossible input kind");
adamc@737	1028 }
adamc@190	1029 }
adamc@190	1030
adamc@756	1031 void uw_enter_subform(uw_context ctx, int n) {
adamc@756	1032 if (n < 0)
adamc@756	1033 uw_error(ctx, FATAL, "Negative subform index %d", n);
adamc@1094	1034 if (n >= ctx->app->inputs_len)
adamc@756	1035 uw_error(ctx, FATAL, "Out-of-bounds subform index %d", n);
adamc@756	1036
adamc@756	1037 switch (INP(ctx)[n].kind) {
adamc@756	1038 case UNSET:
adamc@756	1039 uw_error(ctx, FATAL, "Missing subform");
adamc@756	1040 case FIL:
adamc@756	1041 uw_error(ctx, FATAL, "Tried to read a file form input as subform");
adamc@756	1042 case NORMAL:
adamc@756	1043 uw_error(ctx, FATAL, "Tried to read a normal form input as subform");
adamc@759	1044 case SUBFORMS:
adamc@759	1045 uw_error(ctx, FATAL, "Tried to read a subforms form input as subform");
adamc@759	1046 case ENTRY:
adamc@759	1047 uw_error(ctx, FATAL, "Tried to read an entry form input as subform");
adamc@756	1048 case SUBFORM:
adamc@759	1049 INP(ctx)[n].data.subform.parent = ctx->cur_container;
adamc@760	1050 ctx->cur_container = &INP(ctx)[n];
adamc@756	1051 return;
adamc@756	1052 default:
adamc@756	1053 uw_error(ctx, FATAL, "Impossible input kind");
adamc@756	1054 }
adamc@756	1055 }
adamc@756	1056
adamc@756	1057 void uw_leave_subform(uw_context ctx) {
adamc@756	1058 input *tmp;
adamc@756	1059
adamc@759	1060 if (ctx->cur_container == NULL)
adamc@756	1061 uw_error(ctx, FATAL, "Unmatched uw_leave_subform");
adamc@756	1062
adamc@759	1063 tmp = ctx->cur_container;
adamc@759	1064 ctx->cur_container = tmp->data.subform.parent;
adamc@759	1065 tmp->data.subform.parent = NULL;
adamc@759	1066 }
adamc@759	1067
adamc@759	1068 int uw_enter_subforms(uw_context ctx, int n) {
adamc@759	1069 input *inps;
adamc@759	1070
adamc@759	1071 if (n < 0)
adamc@759	1072 uw_error(ctx, FATAL, "Negative subforms index %d", n);
adamc@1094	1073 if (n >= ctx->app->inputs_len)
adamc@759	1074 uw_error(ctx, FATAL, "Out-of-bounds subforms index %d", n);
adamc@759	1075
adamc@759	1076 switch (INP(ctx)[n].kind) {
adamc@759	1077 case UNSET:
adamc@759	1078 uw_error(ctx, FATAL, "Missing subforms");
adamc@759	1079 case FIL:
adamc@759	1080 uw_error(ctx, FATAL, "Tried to read a file form input as subforms");
adamc@759	1081 case NORMAL:
adamc@759	1082 uw_error(ctx, FATAL, "Tried to read a normal form input %p as subforms", &INP(ctx)[n]);
adamc@759	1083 case SUBFORM:
adamc@759	1084 uw_error(ctx, FATAL, "Tried to read a subform form input as subforms");
adamc@759	1085 case ENTRY:
adamc@759	1086 uw_error(ctx, FATAL, "Tried to read an entry form input as subforms");
adamc@759	1087 case SUBFORMS:
adamc@759	1088 inps = INP(ctx)[n].data.subforms.entries;
adamc@759	1089 if (inps) {
adamc@759	1090 INP(ctx)[n].data.subforms.parent = ctx->cur_container;
adamc@759	1091 ctx->cur_container = INP(ctx)[n].data.subforms.entries;
adamc@759	1092 return 1;
adamc@759	1093 } else
adamc@759	1094 return 0;
adamc@759	1095 default:
adamc@759	1096 uw_error(ctx, FATAL, "Impossible input kind");
adamc@759	1097 }
adamc@759	1098 }
adamc@759	1099
adamc@759	1100 int uw_next_entry(uw_context ctx) {
adamc@759	1101 if (ctx->cur_container == NULL)
adamc@759	1102 uw_error(ctx, FATAL, "uw_next_entry(NULL)");
adamc@759	1103
adamc@759	1104 switch (ctx->cur_container->kind) {
adamc@759	1105 case UNSET:
adamc@759	1106 uw_error(ctx, FATAL, "Missing entry");
adamc@759	1107 case FIL:
adamc@759	1108 uw_error(ctx, FATAL, "Tried to read a file form input as entry");
adamc@759	1109 case NORMAL:
adamc@759	1110 uw_error(ctx, FATAL, "Tried to read a normal form input as entry");
adamc@759	1111 case SUBFORM:
adamc@759	1112 uw_error(ctx, FATAL, "Tried to read a subform form input as entry");
adamc@759	1113 case SUBFORMS:
adamc@759	1114 uw_error(ctx, FATAL, "Tried to read a subforms form input as entry");
adamc@759	1115 case ENTRY:
adamc@759	1116 if (ctx->cur_container->data.entry.next) {
adamc@759	1117 ctx->cur_container = ctx->cur_container->data.entry.next;
adamc@759	1118 return 1;
adamc@759	1119 } else {
adamc@759	1120 ctx->cur_container = ctx->cur_container->data.entry.parent->data.subforms.parent;
adamc@759	1121 return 0;
adamc@759	1122 }
adamc@759	1123 default:
adamc@759	1124 uw_error(ctx, FATAL, "Impossible input kind");
adamc@759	1125 }
adamc@756	1126 }
adamc@756	1127
adamc@643	1128 void uw_set_script_header(uw_context ctx, const char *s) {
adamc@643	1129 ctx->script_header = s;
adamc@643	1130 }
adamc@643	1131
adamc@1094	1132 const char *uw_get_url_prefix(uw_context ctx) {
adamc@1094	1133 return ctx->app->url_prefix;
adamc@667	1134 }
adamc@667	1135
adamc@693	1136 void uw_set_needs_push(uw_context ctx, int n) {
adamc@693	1137 ctx->needs_push = n;
adamc@693	1138 }
adamc@693	1139
adamc@736	1140 void uw_set_needs_sig(uw_context ctx, int n) {
adamc@736	1141 ctx->needs_sig = n;
adamc@736	1142 }
adamc@736	1143
adamc@667	1144
adamc@1113	1145 static void buf_check_ctx(uw_context ctx, const char kind, buf b, size_t extra, const char *desc) {
adamc@666	1146 if (b->back - b->front < extra) {
adamc@666	1147 size_t desired = b->front - b->start + extra, next;
adamc@136	1148 char *new_heap;
adamc@136	1149
adamc@666	1150 next = b->back - b->start;
adamc@317	1151 if (next == 0)
adamc@317	1152 next = 1;
adamc@317	1153 for (; next < desired; next *= 2);
adamc@136	1154
adamc@1134	1155 if (next > b->max) {
adamc@1113	1156 if (desired <= b->max)
adamc@1113	1157 next = desired;
adamc@1113	1158 else
adamc@1113	1159 uw_error(ctx, FATAL, "Memory limit exceeded (%s)", kind);
adamc@1134	1160 }
adamc@1113	1161
adamc@666	1162 new_heap = realloc(b->start, next);
adamc@666	1163 b->front = new_heap + (b->front - b->start);
adamc@666	1164 b->back = new_heap + next;
adamc@136	1165
adamc@667	1166 if (new_heap != b->start) {
adamc@666	1167 b->start = new_heap;
adamc@666	1168 uw_error(ctx, UNLIMITED_RETRY, "Couldn't allocate new %s contiguously", desc);
adamc@136	1169 }
adamc@136	1170
adamc@666	1171 b->start = new_heap;
adamc@136	1172 }
adamc@136	1173 }
adamc@136	1174
adamc@832	1175 void uw_check_heap(uw_context ctx, size_t extra) {
adamc@1113	1176 buf_check_ctx(ctx, "heap", &ctx->heap, extra, "heap chunk");
adamc@666	1177 }
adamc@666	1178
adamc@832	1179 char *uw_heap_front(uw_context ctx) {
adamc@832	1180 return ctx->heap.front;
adamc@832	1181 }
adamc@832	1182
adamc@832	1183 void uw_set_heap_front(uw_context ctx, char *fr) {
adamc@832	1184 ctx->heap.front = fr;
adamc@832	1185 }
adamc@832	1186
adamc@311	1187 void *uw_malloc(uw_context ctx, size_t len) {
adamc@136	1188 void *result;
adamc@136	1189
adamc@311	1190 uw_check_heap(ctx, len);
adamc@136	1191
adamc@666	1192 result = ctx->heap.front;
adamc@666	1193 ctx->heap.front += len;
adamc@136	1194 return result;
adamc@117	1195 }
adamc@117	1196
adamc@323	1197 void uw_begin_region(uw_context ctx) {
adamc@666	1198 regions r = (regions ) ctx->heap.front;
adamc@323	1199
adamc@323	1200 uw_check_heap(ctx, sizeof(regions));
adamc@323	1201
adamc@666	1202 ctx->heap.front += sizeof(regions);
adamc@323	1203
adamc@323	1204 r->next = ctx->regions;
adamc@323	1205 ctx->regions = r;
adamc@323	1206 }
adamc@323	1207
adamc@323	1208 void uw_end_region(uw_context ctx) {
adamc@323	1209 regions *r = ctx->regions;
adamc@323	1210
adamc@323	1211 if (r == NULL)
adamc@323	1212 uw_error(ctx, FATAL, "Region stack underflow");
adamc@323	1213
adamc@666	1214 ctx->heap.front = (char *) r;
adamc@323	1215 ctx->regions = r->next;
adamc@323	1216 }
adamc@323	1217
adamc@324	1218 void uw_memstats(uw_context ctx) {
adamc@1134	1219 printf("Headers: %lu/%lu\n", (unsigned long)buf_used(&ctx->outHeaders), (unsigned long)buf_avail(&ctx->outHeaders));
adamc@1134	1220 printf("Script: %lu/%lu\n", (unsigned long)buf_used(&ctx->script), (unsigned long)buf_avail(&ctx->script));
adamc@1134	1221 printf("Page: %lu/%lu\n", (unsigned long)buf_used(&ctx->page), (unsigned long)buf_avail(&ctx->page));
adamc@1134	1222 printf("Heap: %lu/%lu\n", (unsigned long)buf_used(&ctx->heap), (unsigned long)buf_avail(&ctx->heap));
adamc@324	1223 }
adamc@324	1224
adamc@311	1225 int uw_send(uw_context ctx, int sock) {
adamc@666	1226 int n = uw_really_send(sock, ctx->outHeaders.start, ctx->outHeaders.front - ctx->outHeaders.start);
adamc@462	1227
adamc@462	1228 if (n < 0)
adamc@462	1229 return n;
adamc@462	1230
adamc@462	1231 n = uw_really_send(sock, "\r\n", 2);
adamc@462	1232
adamc@462	1233 if (n < 0)
adamc@462	1234 return n;
adamc@462	1235
adamc@666	1236 return uw_really_send(sock, ctx->page.start, ctx->page.front - ctx->page.start);
adamc@462	1237 }
adamc@462	1238
adamc@856	1239 int uw_print(uw_context ctx, int fd) {
adamc@856	1240 int n = uw_really_write(fd, ctx->outHeaders.start, ctx->outHeaders.front - ctx->outHeaders.start);
adamc@856	1241
adamc@856	1242 if (n < 0)
adamc@856	1243 return n;
adamc@856	1244
adamc@856	1245 n = uw_really_write(fd, "\r\n", 2);
adamc@856	1246
adamc@856	1247 if (n < 0)
adamc@856	1248 return n;
adamc@856	1249
adamc@856	1250 return uw_really_write(fd, ctx->page.start, ctx->page.front - ctx->page.start);
adamc@856	1251 }
adamc@856	1252
adamc@860	1253 int uw_output(uw_context ctx, int (output)(void data, char buf, size_t len), void data) {
adamc@860	1254 int n = output(data, ctx->outHeaders.start, ctx->outHeaders.front - ctx->outHeaders.start);
adamc@860	1255
adamc@860	1256 if (n < 0)
adamc@860	1257 return n;
adamc@860	1258
adamc@860	1259 n = output(data, "\r\n", 2);
adamc@860	1260
adamc@860	1261 if (n < 0)
adamc@860	1262 return n;
adamc@860	1263
adamc@860	1264 return output(data, ctx->page.start, ctx->page.front - ctx->page.start);
adamc@860	1265 }
adamc@860	1266
adamc@462	1267 static void uw_check_headers(uw_context ctx, size_t extra) {
adamc@1113	1268 ctx_buf_check(ctx, "headers", &ctx->outHeaders, extra);
adamc@462	1269 }
adamc@462	1270
adamc@462	1271 void uw_write_header(uw_context ctx, uw_Basis_string s) {
adamc@462	1272 int len = strlen(s);
adamc@462	1273
adamc@462	1274 uw_check_headers(ctx, len + 1);
adamc@666	1275 strcpy(ctx->outHeaders.front, s);
adamc@666	1276 ctx->outHeaders.front += len;
adamc@562	1277 }
adamc@562	1278
adamc@1110	1279 void uw_clear_headers(uw_context ctx) {
adamc@1110	1280 buf_reset(&ctx->outHeaders);
adamc@1110	1281 }
adamc@1110	1282
adamc@562	1283 static void uw_check_script(uw_context ctx, size_t extra) {
adamc@1113	1284 ctx_buf_check(ctx, "script", &ctx->script, extra);
adamc@562	1285 }
adamc@562	1286
adamc@562	1287 void uw_write_script(uw_context ctx, uw_Basis_string s) {
adamc@562	1288 int len = strlen(s);
adamc@562	1289
adamc@562	1290 uw_check_script(ctx, len + 1);
adamc@666	1291 strcpy(ctx->script.front, s);
adamc@666	1292 ctx->script.front += len;
adamc@562	1293 }
adamc@562	1294
adamc@645	1295 const char *uw_Basis_get_script(uw_context ctx, uw_unit u) {
adamc@916	1296 return "<sc>";
adamc@565	1297 }
adamc@565	1298
adamc@695	1299 uw_Basis_string uw_Basis_maybe_onload(uw_context ctx, uw_Basis_string s) {
adamc@695	1300 if (s[0] == 0)
adamc@695	1301 return "";
adamc@695	1302 else {
adamc@695	1303 char *r = uw_malloc(ctx, 11 + strlen(s));
adamc@695	1304 sprintf(r, " onload='%s'", s);
adamc@695	1305 return r;
adamc@695	1306 }
adamc@695	1307 }
adamc@695	1308
adamc@1042	1309 uw_Basis_string uw_Basis_maybe_onunload(uw_context ctx, uw_Basis_string s) {
adamc@1042	1310 if (ctx->script_header[0] == 0)
adamc@1042	1311 return "";
adamc@1042	1312 else {
adamc@1042	1313 char *r = uw_malloc(ctx, 22 + strlen(s));
adamc@1042	1314 sprintf(r, " onunload='unload();%s'", s);
adamc@1042	1315 return r;
adamc@1042	1316 }
adamc@1042	1317 }
adamc@1042	1318
adamc@694	1319 const char *uw_Basis_get_settings(uw_context ctx, uw_unit u) {
adamc@736	1320 if (ctx->client == NULL) {
adamc@736	1321 if (ctx->needs_sig) {
adamc@1094	1322 char *sig = ctx->app->cookie_sig(ctx);
adamc@736	1323 char *r = uw_malloc(ctx, strlen(sig) + 8);
adamc@736	1324 sprintf(r, "sig=\"%s\";", sig);
adamc@736	1325 return r;
adamc@736	1326 }
adamc@736	1327 else
adamc@736	1328 return "";
adamc@736	1329 } else {
adamc@1094	1330 char *sig = ctx->needs_sig ? ctx->app->cookie_sig(ctx) : "";
adamc@1094	1331 char r = uw_malloc(ctx, 59 + 3 INTS_MAX + strlen(ctx->app->url_prefix)
adamc@736	1332 + (ctx->needs_sig ? strlen(sig) + 7 : 0));
adamc@736	1333 sprintf(r, "client_id=%u;client_pass=%d;url_prefix=\"%s\";timeout=%d;%s%s%slistener();",
adamc@682	1334 ctx->client->id,
adamc@682	1335 ctx->client->pass,
adamc@1094	1336 ctx->app->url_prefix,
adamc@1094	1337 ctx->app->timeout,
adamc@736	1338 ctx->needs_sig ? "sig=\"" : "",
adamc@736	1339 sig,
adamc@736	1340 ctx->needs_sig ? "\";" : "");
adamc@679	1341 return r;
adamc@668	1342 }
adamc@667	1343 }
adamc@667	1344
adamc@574	1345 uw_Basis_string uw_Basis_jsifyString(uw_context ctx, uw_Basis_string s) {
adamc@574	1346 char r, s2;
adamc@574	1347
adamc@574	1348 uw_check_heap(ctx, strlen(s) * 4 + 2);
adamc@574	1349
adamc@666	1350 r = s2 = ctx->heap.front;
adamc@574	1351 *s2++ = '"';
adamc@574	1352
adamc@574	1353 for (; *s; s++) {
adam@1286	1354 unsigned char c = *s;
adamc@574	1355
adamc@574	1356 switch (c) {
adamc@574	1357 case '"':
adamc@574	1358 strcpy(s2, "\\\"");
adamc@574	1359 s2 += 2;
adamc@574	1360 break;
adamc@1027	1361 case '\'':
adamc@1027	1362 strcpy(s2, "\\047");
adamc@1027	1363 s2 += 4;
adamc@1027	1364 break;
adamc@574	1365 case '\\':
adamc@574	1366 strcpy(s2, "\\\\");
adamc@574	1367 s2 += 2;
adamc@574	1368 break;
adamc@574	1369 default:
adam@1286	1370 if (isprint((int)c) \|\| c >= 128)
adamc@574	1371 *s2++ = c;
adamc@574	1372 else {
adamc@574	1373 sprintf(s2, "\\%3o", c);
adamc@574	1374 s2 += 4;
adamc@574	1375 }
adamc@574	1376 }
adamc@574	1377 }
adamc@574	1378
adamc@574	1379 strcpy(s2, "\"");
adamc@910	1380 ctx->heap.front = s2 + 2;
adamc@574	1381 return r;
adamc@574	1382 }
adamc@574	1383
adam@1286	1384 uw_Basis_string uw_Basis_jsifyChar(uw_context ctx, uw_Basis_char c1) {
adam@1286	1385 unsigned char c = c1;
adamc@1025	1386 char r, s2;
adamc@1025	1387
adamc@1025	1388 uw_check_heap(ctx, 6);
adamc@1025	1389
adamc@1025	1390 r = s2 = ctx->heap.front;
adamc@1025	1391 *s2++ = '"';
adamc@1025	1392
adamc@1025	1393 switch (c) {
adamc@1025	1394 case '"':
adamc@1025	1395 strcpy(s2, "\\\"");
adamc@1025	1396 s2 += 2;
adamc@1025	1397 break;
adamc@1027	1398 case '\'':
adamc@1027	1399 strcpy(s2, "\\047");
adamc@1027	1400 s2 += 4;
adamc@1027	1401 break;
adamc@1025	1402 case '\\':
adamc@1025	1403 strcpy(s2, "\\\\");
adamc@1025	1404 s2 += 2;
adamc@1025	1405 break;
adamc@1025	1406 default:
adam@1286	1407 if (isprint((int)c) \|\| c >= 128)
adamc@1025	1408 *s2++ = c;
adamc@1025	1409 else {
adam@1286	1410 sprintf(s2, "\\%3o", (unsigned char)c);
adamc@1025	1411 s2 += 4;
adamc@1025	1412 }
adamc@1025	1413 }
adamc@1025	1414
adamc@1025	1415 strcpy(s2, "\"");
adamc@1025	1416 ctx->heap.front = s2 + 2;
adamc@1025	1417 return r;
adamc@1025	1418 }
adamc@1025	1419
adamc@574	1420 uw_Basis_string uw_Basis_jsifyString_ws(uw_context ctx, uw_Basis_string s) {
adamc@574	1421 char r, s2;
adamc@574	1422
adamc@574	1423 uw_check_script(ctx, strlen(s) * 4 + 2);
adamc@574	1424
adamc@666	1425 r = s2 = ctx->script.front;
adamc@574	1426 *s2++ = '"';
adamc@574	1427
adamc@574	1428 for (; *s; s++) {
adam@1286	1429 unsigned char c = *s;
adamc@574	1430
adamc@574	1431 switch (c) {
adamc@577	1432 case '\'':
adamc@1027	1433 strcpy(s2, "\\");
adamc@574	1434 s2 += 2;
adamc@574	1435 break;
adamc@574	1436 case '\\':
adamc@574	1437 strcpy(s2, "\\\\");
adamc@574	1438 s2 += 2;
adamc@574	1439 break;
adamc@574	1440 default:
adam@1286	1441 if (isprint((int)c) \|\| c >= 128)
adamc@574	1442 *s2++ = c;
adamc@574	1443 else {
adamc@574	1444 sprintf(s2, "\\%3o", c);
adamc@574	1445 s2 += 4;
adamc@574	1446 }
adamc@574	1447 }
adamc@574	1448 }
adamc@574	1449
adamc@574	1450 strcpy(s2, "\"");
adamc@666	1451 ctx->script.front = s2 + 1;
adamc@574	1452 return r;
adamc@574	1453 }
adamc@574	1454
adamc@682	1455 char *uw_Basis_jsifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	1456 if (ctx->client == NULL \|\| chn.cli != ctx->client->id)
adamc@682	1457 return "null";
adamc@682	1458 else {
adamc@682	1459 int len;
adamc@682	1460 char *r;
adamc@682	1461
adamc@682	1462 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	1463 r = ctx->heap.front;
adamc@682	1464 sprintf(r, "%u%n", chn.chn, &len);
adamc@682	1465 ctx->heap.front += len+1;
adamc@682	1466 return r;
adamc@682	1467 }
adamc@682	1468 }
adamc@682	1469
adamc@577	1470 uw_Basis_int uw_Basis_new_client_source(uw_context ctx, uw_Basis_string s) {
adamc@577	1471 int len;
adamc@577	1472 size_t s_len = strlen(s);
adamc@562	1473
adamc@970	1474 uw_check_script(ctx, 18 + INTS_MAX + s_len);
adamc@970	1475 sprintf(ctx->script.front, "var s%d=sc(exec(%n", ctx->source_count, &len);
adamc@666	1476 ctx->script.front += len;
adamc@666	1477 strcpy(ctx->script.front, s);
adamc@666	1478 ctx->script.front += s_len;
adamc@970	1479 strcpy(ctx->script.front, "));");
adamc@972	1480 ctx->script.front += 3;
adamc@562	1481
adamc@565	1482 return ctx->source_count++;
adamc@117	1483 }
adamc@117	1484
adamc@577	1485 uw_unit uw_Basis_set_client_source(uw_context ctx, uw_Basis_int n, uw_Basis_string s) {
adamc@577	1486 int len;
adamc@577	1487 size_t s_len = strlen(s);
adamc@577	1488
adamc@970	1489 uw_check_script(ctx, 12 + INTS_MAX + s_len);
adamc@970	1490 sprintf(ctx->script.front, "sv(s%d,exec(%n", (int)n, &len);
adamc@666	1491 ctx->script.front += len;
adamc@666	1492 strcpy(ctx->script.front, s);
adamc@666	1493 ctx->script.front += s_len;
adamc@970	1494 strcpy(ctx->script.front, "));");
adamc@972	1495 ctx->script.front += 3;
adamc@577	1496
adamc@577	1497 return uw_unit_v;
adamc@577	1498 }
adamc@577	1499
adamc@311	1500 static void uw_check(uw_context ctx, size_t extra) {
adamc@1113	1501 ctx_buf_check(ctx, "page", &ctx->page, extra);
adamc@117	1502 }
adamc@117	1503
adamc@311	1504 static void uw_writec_unsafe(uw_context ctx, char c) {
adamc@666	1505 *(ctx->page.front)++ = c;
adamc@117	1506 }
adamc@117	1507
adamc@311	1508 void uw_writec(uw_context ctx, char c) {
adamc@311	1509 uw_check(ctx, 1);
adamc@311	1510 uw_writec_unsafe(ctx, c);
adamc@117	1511 }
adamc@117	1512
adamc@311	1513 static void uw_write_unsafe(uw_context ctx, const char* s) {
adamc@117	1514 int len = strlen(s);
adamc@666	1515 memcpy(ctx->page.front, s, len);
adamc@666	1516 ctx->page.front += len;
adamc@117	1517 }
adamc@117	1518
adamc@311	1519 void uw_write(uw_context ctx, const char* s) {
adamc@311	1520 uw_check(ctx, strlen(s) + 1);
adamc@311	1521 uw_write_unsafe(ctx, s);
adamc@666	1522 *ctx->page.front = 0;
adamc@102	1523 }
adamc@106	1524
adamc@311	1525 char *uw_Basis_attrifyInt(uw_context ctx, uw_Basis_int n) {
adamc@136	1526 char *result;
adamc@136	1527 int len;
adamc@311	1528 uw_check_heap(ctx, INTS_MAX);
adamc@666	1529 result = ctx->heap.front;
adamc@276	1530 sprintf(result, "%lld%n", n, &len);
adamc@666	1531 ctx->heap.front += len+1;
adamc@136	1532 return result;
adamc@106	1533 }
adamc@106	1534
adamc@311	1535 char *uw_Basis_attrifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@136	1536 char *result;
adamc@136	1537 int len;
adamc@311	1538 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	1539 result = ctx->heap.front;
adamc@136	1540 sprintf(result, "%g%n", n, &len);
adamc@666	1541 ctx->heap.front += len+1;
adamc@136	1542 return result;
adamc@106	1543 }
adamc@106	1544
adamc@311	1545 char *uw_Basis_attrifyString(uw_context ctx, uw_Basis_string s) {
adamc@136	1546 int len = strlen(s);
adamc@136	1547 char result, p;
adamc@311	1548 uw_check_heap(ctx, len * 6 + 1);
adamc@136	1549
adamc@666	1550 result = p = ctx->heap.front;
adamc@136	1551
adamc@136	1552 for (; *s; s++) {
adamc@1054	1553 unsigned char c = *s;
adamc@136	1554
adamc@136	1555 if (c == '"') {
adamc@136	1556 strcpy(p, """);
adamc@136	1557 p += 6;
adamc@136	1558 } else if (c == '&') {
adamc@136	1559 strcpy(p, "&");
adamc@136	1560 p += 5;
adamc@136	1561 }
adamc@1059	1562 else
adamc@136	1563 *p++ = c;
adamc@136	1564 }
adamc@136	1565
adamc@137	1566 *p++ = 0;
adamc@666	1567 ctx->heap.front = p;
adamc@136	1568 return result;
adamc@106	1569 }
adamc@106	1570
adamc@1011	1571 char *uw_Basis_attrifyChar(uw_context ctx, uw_Basis_char c) {
adamc@1011	1572 char result, p;
adamc@1011	1573 uw_check_heap(ctx, 7);
adamc@1011	1574
adamc@1011	1575 result = p = ctx->heap.front;
adamc@1011	1576
adamc@1011	1577 if (c == '"') {
adamc@1011	1578 strcpy(p, """);
adamc@1011	1579 p += 6;
adamc@1011	1580 } else if (c == '&') {
adamc@1011	1581 strcpy(p, "&");
adamc@1011	1582 p += 5;
adamc@1011	1583 }
adamc@1059	1584 else
adamc@1011	1585 *p++ = c;
adamc@1011	1586
adamc@1011	1587 *p++ = 0;
adamc@1011	1588 ctx->heap.front = p;
adamc@1011	1589 return result;
adamc@1011	1590 }
adamc@1011	1591
adamc@721	1592 char *uw_Basis_attrifyCss_class(uw_context ctx, uw_Basis_css_class s) {
adamc@721	1593 return s;
adamc@721	1594 }
adamc@721	1595
adamc@311	1596 static void uw_Basis_attrifyInt_w_unsafe(uw_context ctx, uw_Basis_int n) {
adamc@117	1597 int len;
adamc@117	1598
adamc@666	1599 sprintf(ctx->page.front, "%lld%n", n, &len);
adamc@666	1600 ctx->page.front += len;
adamc@106	1601 }
adamc@106	1602
adamc@428	1603 uw_unit uw_Basis_attrifyInt_w(uw_context ctx, uw_Basis_int n) {
adamc@311	1604 uw_check(ctx, INTS_MAX);
adamc@311	1605 uw_Basis_attrifyInt_w_unsafe(ctx, n);
adamc@428	1606
adamc@428	1607 return uw_unit_v;
adamc@106	1608 }
adamc@106	1609
adamc@428	1610 uw_unit uw_Basis_attrifyFloat_w(uw_context ctx, uw_Basis_float n) {
adamc@117	1611 int len;
adamc@117	1612
adamc@311	1613 uw_check(ctx, FLOATS_MAX);
adamc@666	1614 sprintf(ctx->page.front, "%g%n", n, &len);
adamc@666	1615 ctx->page.front += len;
adamc@428	1616
adamc@428	1617 return uw_unit_v;
adamc@117	1618 }
adamc@117	1619
adamc@428	1620 uw_unit uw_Basis_attrifyString_w(uw_context ctx, uw_Basis_string s) {
adamc@311	1621 uw_check(ctx, strlen(s) * 6);
adamc@117	1622
adamc@106	1623 for (; *s; s++) {
adamc@1054	1624 unsigned char c = *s;
adamc@106	1625
adamc@106	1626 if (c == '"')
adamc@311	1627 uw_write_unsafe(ctx, """);
adamc@136	1628 else if (c == '&')
adamc@311	1629 uw_write_unsafe(ctx, "&");
adamc@1059	1630 else
adamc@311	1631 uw_writec_unsafe(ctx, c);
adamc@106	1632 }
adamc@428	1633
adamc@428	1634 return uw_unit_v;
adamc@106	1635 }
adamc@120	1636
adamc@1011	1637 uw_unit uw_Basis_attrifyChar_w(uw_context ctx, uw_Basis_char c) {
adamc@1011	1638 uw_check(ctx, 6);
adamc@1011	1639
adamc@1011	1640 if (c == '"')
adamc@1011	1641 uw_write_unsafe(ctx, """);
adamc@1011	1642 else if (c == '&')
adamc@1011	1643 uw_write_unsafe(ctx, "&");
adamc@1059	1644 else
adamc@1011	1645 uw_writec_unsafe(ctx, c);
adamc@1011	1646
adamc@1011	1647 return uw_unit_v;
adamc@1011	1648 }
adamc@1011	1649
adamc@120	1650
adamc@311	1651 char *uw_Basis_urlifyInt(uw_context ctx, uw_Basis_int n) {
adamc@137	1652 int len;
adamc@137	1653 char *r;
adamc@137	1654
adamc@311	1655 uw_check_heap(ctx, INTS_MAX);
adamc@666	1656 r = ctx->heap.front;
adamc@276	1657 sprintf(r, "%lld%n", n, &len);
adamc@666	1658 ctx->heap.front += len+1;
adamc@137	1659 return r;
adamc@120	1660 }
adamc@120	1661
adamc@682	1662 char *uw_Basis_urlifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	1663 if (ctx->client == NULL \|\| chn.cli != ctx->client->id)
adamc@682	1664 return "";
adamc@682	1665 else {
adamc@682	1666 int len;
adamc@682	1667 char *r;
adamc@679	1668
adamc@682	1669 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	1670 r = ctx->heap.front;
adamc@682	1671 sprintf(r, "%u%n", chn.chn, &len);
adamc@682	1672 ctx->heap.front += len+1;
adamc@682	1673 return r;
adamc@682	1674 }
adamc@679	1675 }
adamc@679	1676
adamc@311	1677 char *uw_Basis_urlifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@137	1678 int len;
adamc@137	1679 char *r;
adamc@137	1680
adamc@311	1681 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	1682 r = ctx->heap.front;
adamc@137	1683 sprintf(r, "%g%n", n, &len);
adamc@666	1684 ctx->heap.front += len+1;
adamc@137	1685 return r;
adamc@120	1686 }
adamc@120	1687
adamc@311	1688 char *uw_Basis_urlifyString(uw_context ctx, uw_Basis_string s) {
adamc@137	1689 char r, p;
adamc@137	1690
adamc@925	1691 if (s[0] == '\0')
adamc@925	1692 return "_";
adamc@925	1693
adamc@925	1694 uw_check_heap(ctx, strlen(s) * 3 + 1 + !!(s[0] == '_'));
adamc@925	1695
adamc@925	1696 r = p = ctx->heap.front;
adamc@925	1697 if (s[0] == '_')
adamc@925	1698 *p++ = '_';
adamc@925	1699
adamc@925	1700 for (; *s; s++) {
adamc@1087	1701 unsigned char c = *s;
adamc@137	1702
adamc@137	1703 if (c == ' ')
adamc@137	1704 *p++ = '+';
adamc@137	1705 else if (isalnum(c))
adamc@137	1706 *p++ = c;
adamc@137	1707 else {
adamc@1259	1708 sprintf(p, ".%02X", c);
adamc@137	1709 p += 3;
adamc@137	1710 }
adamc@137	1711 }
adamc@137	1712
adamc@137	1713 *p++ = 0;
adamc@666	1714 ctx->heap.front = p;
adamc@137	1715 return r;
adamc@120	1716 }
adamc@120	1717
adamc@311	1718 char *uw_Basis_urlifyBool(uw_context ctx, uw_Basis_bool b) {
adamc@311	1719 if (b == uw_Basis_False)
adamc@186	1720 return "0";
adamc@186	1721 else
adamc@186	1722 return "1";
adamc@186	1723 }
adamc@186	1724
adamc@311	1725 static void uw_Basis_urlifyInt_w_unsafe(uw_context ctx, uw_Basis_int n) {
adamc@120	1726 int len;
adamc@120	1727
adamc@666	1728 sprintf(ctx->page.front, "%lld%n", n, &len);
adamc@666	1729 ctx->page.front += len;
adamc@120	1730 }
adamc@120	1731
adamc@428	1732 uw_unit uw_Basis_urlifyInt_w(uw_context ctx, uw_Basis_int n) {
adamc@311	1733 uw_check(ctx, INTS_MAX);
adamc@311	1734 uw_Basis_urlifyInt_w_unsafe(ctx, n);
adamc@428	1735
adamc@428	1736 return uw_unit_v;
adamc@120	1737 }
adamc@120	1738
adamc@682	1739 uw_unit uw_Basis_urlifyChannel_w(uw_context ctx, uw_Basis_channel chn) {
adamc@682	1740 if (ctx->client != NULL && chn.cli == ctx->client->id) {
adamc@682	1741 int len;
adamc@682	1742
adamc@682	1743 uw_check(ctx, INTS_MAX + 1);
adamc@682	1744 sprintf(ctx->page.front, "%u%n", chn.chn, &len);
adamc@682	1745 ctx->page.front += len;
adamc@682	1746 }
adamc@682	1747
adamc@679	1748 return uw_unit_v;
adamc@679	1749 }
adamc@679	1750
adamc@428	1751 uw_unit uw_Basis_urlifyFloat_w(uw_context ctx, uw_Basis_float n) {
adamc@120	1752 int len;
adamc@120	1753
adamc@311	1754 uw_check(ctx, FLOATS_MAX);
adamc@666	1755 sprintf(ctx->page.front, "%g%n", n, &len);
adamc@666	1756 ctx->page.front += len;
adamc@428	1757
adamc@428	1758 return uw_unit_v;
adamc@120	1759 }
adamc@120	1760
adamc@488	1761 uw_Basis_string uw_Basis_urlifyTime(uw_context ctx, uw_Basis_time t) {
adamc@488	1762 return uw_Basis_urlifyInt(ctx, t);
adamc@488	1763 }
adamc@488	1764
adamc@428	1765 uw_unit uw_Basis_urlifyString_w(uw_context ctx, uw_Basis_string s) {
adamc@925	1766 if (s[0] == '\0') {
adamc@925	1767 uw_check(ctx, 1);
adamc@925	1768 uw_writec_unsafe(ctx, '_');
adamc@925	1769 return uw_unit_v;
adamc@925	1770 }
adamc@925	1771
adamc@925	1772 uw_check(ctx, strlen(s) * 3 + !!(s[0] == '_'));
adamc@925	1773
adamc@925	1774 if (s[0] == '_')
adamc@925	1775 uw_writec_unsafe(ctx, '_');
adamc@120	1776
adamc@120	1777 for (; *s; s++) {
adamc@1087	1778 unsigned char c = *s;
adamc@120	1779
adamc@120	1780 if (c == ' ')
adamc@311	1781 uw_writec_unsafe(ctx, '+');
adamc@120	1782 else if (isalnum(c))
adamc@311	1783 uw_writec_unsafe(ctx, c);
adamc@120	1784 else {
adamc@1259	1785 sprintf(ctx->page.front, ".%02X", c);
adamc@666	1786 ctx->page.front += 3;
adamc@120	1787 }
adamc@120	1788 }
adamc@428	1789
adamc@428	1790 return uw_unit_v;
adamc@120	1791 }
adamc@120	1792
adamc@428	1793 uw_unit uw_Basis_urlifyBool_w(uw_context ctx, uw_Basis_bool b) {
adamc@311	1794 if (b == uw_Basis_False)
adamc@311	1795 uw_writec(ctx, '0');
adamc@186	1796 else
adamc@311	1797 uw_writec(ctx, '1');
adamc@428	1798
adamc@428	1799 return uw_unit_v;
adamc@186	1800 }
adamc@186	1801
adamc@120	1802
adamc@311	1803 static char uw_unurlify_advance(char s) {
adamc@144	1804 char *new_s = strchr(s, '/');
adamc@120	1805
adamc@120	1806 if (new_s)
adamc@120	1807 *new_s++ = 0;
adamc@120	1808 else
adamc@144	1809 new_s = strchr(s, 0);
adamc@144	1810
adamc@144	1811 return new_s;
adamc@144	1812 }
adamc@144	1813
adamc@311	1814 uw_Basis_int uw_Basis_unurlifyInt(uw_context ctx, char **s) {
adamc@311	1815 char new_s = uw_unurlify_advance(s);
adamc@311	1816 uw_Basis_int r;
adamc@120	1817
adamc@276	1818 r = atoll(*s);
adamc@120	1819 *s = new_s;
adamc@120	1820 return r;
adamc@120	1821 }
adamc@120	1822
adamc@311	1823 uw_Basis_float uw_Basis_unurlifyFloat(uw_context ctx, char **s) {
adamc@311	1824 char new_s = uw_unurlify_advance(s);
adamc@311	1825 uw_Basis_float r;
adamc@120	1826
adamc@120	1827 r = atof(*s);
adamc@120	1828 *s = new_s;
adamc@120	1829 return r;
adamc@120	1830 }
adamc@120	1831
adamc@488	1832 uw_Basis_time uw_Basis_unurlifyTime(uw_context ctx, char **s) {
adamc@488	1833 return uw_Basis_unurlifyInt(ctx, s);
adamc@488	1834 }
adamc@488	1835
adamc@1023	1836 static uw_Basis_string uw_unurlifyString_to(int fromClient, uw_context ctx, char r, char s) {
adamc@927	1837 char s1, s2 = s;
adamc@144	1838 int n;
adamc@136	1839
adamc@1023	1840 if (!fromClient) {
adamc@1023	1841 if (*s2 == '_')
adamc@1023	1842 ++s2;
adamc@1259	1843 else if ((s2[0] == '%' \|\| s2[0] == '.') && s2[1] == '5' && (s2[2] == 'f' \|\| s2[2] == 'F'))
adamc@1023	1844 s2 += 3;
adamc@1023	1845 }
adamc@925	1846
adamc@927	1847 for (s1 = r; *s2; ++s1, ++s2) {
adamc@1087	1848 unsigned char c = *s2;
adamc@136	1849
adamc@136	1850 switch (c) {
adamc@136	1851 case '+':
adamc@136	1852 *s1 = ' ';
adamc@136	1853 break;
adamc@136	1854 case '%':
adamc@169	1855 if (s2[1] == 0)
adamc@311	1856 uw_error(ctx, FATAL, "Missing first character of escaped URL byte");
adamc@169	1857 if (s2[2] == 0)
adamc@311	1858 uw_error(ctx, FATAL, "Missing second character of escaped URL byte");
adamc@169	1859 if (sscanf(s2+1, "%02X", &n) != 1)
adamc@311	1860 uw_error(ctx, FATAL, "Invalid escaped URL byte starting at: %s", s2);
adamc@136	1861 *s1 = n;
adamc@136	1862 s2 += 2;
adamc@136	1863 break;
adamc@1259	1864 case '.':
adamc@1259	1865 if (!fromClient) {
adamc@1259	1866 if (s2[1] == 0)
adamc@1259	1867 uw_error(ctx, FATAL, "Missing first character of escaped URL byte");
adamc@1259	1868 if (s2[2] == 0)
adamc@1259	1869 uw_error(ctx, FATAL, "Missing second character of escaped URL byte");
adamc@1259	1870 if (sscanf(s2+1, "%02X", &n) != 1)
adamc@1259	1871 uw_error(ctx, FATAL, "Invalid escaped URL byte starting at: %s", s2);
adamc@1259	1872 *s1 = n;
adamc@1259	1873 s2 += 2;
adamc@1259	1874 break;
adamc@1259	1875 }
adamc@136	1876 default:
adamc@136	1877 *s1 = c;
adamc@136	1878 }
adamc@136	1879 }
adamc@136	1880 *s1++ = 0;
adamc@144	1881 return s1;
adamc@144	1882 }
adamc@144	1883
adamc@311	1884 uw_Basis_bool uw_Basis_unurlifyBool(uw_context ctx, char **s) {
adamc@311	1885 char new_s = uw_unurlify_advance(s);
adamc@311	1886 uw_Basis_bool r;
adamc@186	1887
adamc@186	1888 if (s[0] == 0 \|\| !strcmp(s, "0") \|\| !strcmp(*s, "off"))
adamc@311	1889 r = uw_Basis_False;
adamc@186	1890 else
adamc@311	1891 r = uw_Basis_True;
adamc@186	1892
adamc@186	1893 *s = new_s;
adamc@186	1894 return r;
adamc@186	1895 }
adamc@186	1896
adamc@311	1897 uw_Basis_string uw_Basis_unurlifyString(uw_context ctx, char **s) {
adamc@311	1898 char new_s = uw_unurlify_advance(s);
adamc@1134	1899 char *r;
adamc@1134	1900 int len;
adamc@144	1901
adamc@200	1902 len = strlen(*s);
adamc@311	1903 uw_check_heap(ctx, len + 1);
adamc@144	1904
adamc@666	1905 r = ctx->heap.front;
adamc@1023	1906 ctx->heap.front = uw_unurlifyString_to(0, ctx, ctx->heap.front, *s);
adamc@1023	1907 *s = new_s;
adamc@1023	1908 return r;
adamc@1023	1909 }
adamc@1023	1910
adamc@1109	1911 uw_Basis_unit uw_Basis_unurlifyUnit(uw_context ctx, char **s) {
adamc@1109	1912 s = uw_unurlify_advance(s);
adamc@1109	1913 return uw_unit_v;
adamc@1109	1914 }
adamc@1109	1915
adamc@1023	1916 uw_Basis_string uw_Basis_unurlifyString_fromClient(uw_context ctx, char **s) {
adamc@1023	1917 char new_s = uw_unurlify_advance(s);
adamc@1134	1918 char *r;
adamc@1134	1919 int len;
adamc@1023	1920
adamc@1023	1921 len = strlen(*s);
adamc@1023	1922 uw_check_heap(ctx, len + 1);
adamc@1023	1923
adamc@1023	1924 r = ctx->heap.front;
adamc@1023	1925 ctx->heap.front = uw_unurlifyString_to(1, ctx, ctx->heap.front, *s);
adamc@136	1926 *s = new_s;
adamc@136	1927 return r;
adamc@120	1928 }
adamc@135	1929
adamc@135	1930
adamc@311	1931 char *uw_Basis_htmlifyInt(uw_context ctx, uw_Basis_int n) {
adamc@286	1932 int len;
adamc@286	1933 char *r;
adamc@286	1934
adamc@311	1935 uw_check_heap(ctx, INTS_MAX);
adamc@666	1936 r = ctx->heap.front;
adamc@286	1937 sprintf(r, "%lld%n", n, &len);
adamc@666	1938 ctx->heap.front += len+1;
adamc@286	1939 return r;
adamc@286	1940 }
adamc@286	1941
adamc@428	1942 uw_unit uw_Basis_htmlifyInt_w(uw_context ctx, uw_Basis_int n) {
adamc@286	1943 int len;
adamc@286	1944
adamc@311	1945 uw_check(ctx, INTS_MAX);
adamc@666	1946 sprintf(ctx->page.front, "%lld%n", n, &len);
adamc@666	1947 ctx->page.front += len;
adamc@428	1948
adamc@428	1949 return uw_unit_v;
adamc@286	1950 }
adamc@286	1951
adamc@311	1952 char *uw_Basis_htmlifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@286	1953 int len;
adamc@286	1954 char *r;
adamc@286	1955
adamc@311	1956 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	1957 r = ctx->heap.front;
adamc@286	1958 sprintf(r, "%g%n", n, &len);
adamc@666	1959 ctx->heap.front += len+1;
adamc@286	1960 return r;
adamc@286	1961 }
adamc@286	1962
adamc@428	1963 uw_unit uw_Basis_htmlifyFloat_w(uw_context ctx, uw_Basis_float n) {
adamc@286	1964 int len;
adamc@286	1965
adamc@311	1966 uw_check(ctx, FLOATS_MAX);
adamc@666	1967 sprintf(ctx->page.front, "%g%n", n, &len);
adamc@666	1968 ctx->page.front += len;
adamc@428	1969
adamc@428	1970 return uw_unit_v;
adamc@286	1971 }
adamc@286	1972
adamc@311	1973 char *uw_Basis_htmlifyString(uw_context ctx, uw_Basis_string s) {
adamc@137	1974 char r, s2;
adamc@137	1975
adamc@311	1976 uw_check_heap(ctx, strlen(s) * 5 + 1);
adamc@137	1977
adamc@666	1978 for (r = s2 = ctx->heap.front; *s; s++) {
adamc@1054	1979 unsigned char c = *s;
adamc@137	1980
adamc@137	1981 switch (c) {
adamc@137	1982 case '<':
adamc@137	1983 strcpy(s2, "<");
adamc@137	1984 s2 += 4;
adamc@137	1985 break;
adamc@137	1986 case '&':
adamc@137	1987 strcpy(s2, "&");
adamc@137	1988 s2 += 5;
adamc@137	1989 break;
adamc@137	1990 default:
adamc@1059	1991 *s2++ = c;
adamc@137	1992 }
adamc@137	1993 }
adamc@137	1994
adamc@137	1995 *s2++ = 0;
adamc@666	1996 ctx->heap.front = s2;
adamc@137	1997 return r;
adamc@135	1998 }
adamc@135	1999
adamc@428	2000 uw_unit uw_Basis_htmlifyString_w(uw_context ctx, uw_Basis_string s) {
adamc@321	2001 uw_check(ctx, strlen(s) * 6);
adamc@135	2002
adamc@135	2003 for (; *s; s++) {
adamc@1054	2004 unsigned char c = *s;
adamc@135	2005
adamc@135	2006 switch (c) {
adamc@135	2007 case '<':
adamc@311	2008 uw_write_unsafe(ctx, "<");
adamc@135	2009 break;
adamc@135	2010 case '&':
adamc@311	2011 uw_write_unsafe(ctx, "&");
adamc@135	2012 break;
adamc@135	2013 default:
adamc@1059	2014 uw_writec_unsafe(ctx, c);
adamc@135	2015 }
adamc@135	2016 }
adamc@428	2017
adamc@428	2018 return uw_unit_v;
adamc@135	2019 }
adamc@180	2020
adamc@311	2021 uw_Basis_string uw_Basis_htmlifyBool(uw_context ctx, uw_Basis_bool b) {
adamc@311	2022 if (b == uw_Basis_False)
adamc@286	2023 return "False";
adamc@286	2024 else
adamc@286	2025 return "True";
adamc@286	2026 }
adamc@286	2027
adamc@428	2028 uw_unit uw_Basis_htmlifyBool_w(uw_context ctx, uw_Basis_bool b) {
adamc@311	2029 if (b == uw_Basis_False) {
adamc@311	2030 uw_check(ctx, 6);
adamc@666	2031 strcpy(ctx->page.front, "False");
adamc@666	2032 ctx->page.front += 5;
adamc@286	2033 } else {
adamc@311	2034 uw_check(ctx, 5);
adamc@666	2035 strcpy(ctx->page.front, "True");
adamc@666	2036 ctx->page.front += 4;
adamc@286	2037 }
adamc@428	2038
adamc@428	2039 return uw_unit_v;
adamc@286	2040 }
adamc@286	2041
adamc@436	2042 #define TIME_FMT "%x %X"
adamc@438	2043 #define TIME_FMT_PG "%Y-%m-%d %T"
adamc@436	2044
adamc@436	2045 uw_Basis_string uw_Basis_htmlifyTime(uw_context ctx, uw_Basis_time t) {
adamc@436	2046 size_t len;
adamc@436	2047 char *r;
adamc@436	2048 struct tm stm;
adamc@436	2049
adamc@436	2050 if (localtime_r(&t, &stm)) {
adamc@436	2051 uw_check_heap(ctx, TIMES_MAX);
adamc@666	2052 r = ctx->heap.front;
adamc@436	2053 len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
adamc@666	2054 ctx->heap.front += len+1;
adamc@436	2055 return r;
adamc@436	2056 } else
adamc@436	2057 return "<i>Invalid time</i>";
adamc@436	2058 }
adamc@436	2059
adamc@436	2060 uw_unit uw_Basis_htmlifyTime_w(uw_context ctx, uw_Basis_time t) {
adamc@436	2061 size_t len;
adamc@436	2062 char *r;
adamc@436	2063 struct tm stm;
adamc@436	2064
adamc@436	2065 if (localtime_r(&t, &stm)) {
adamc@436	2066 uw_check(ctx, TIMES_MAX);
adamc@666	2067 r = ctx->page.front;
adamc@436	2068 len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
adamc@666	2069 ctx->page.front += len;
adamc@436	2070 } else {
adamc@436	2071 uw_check(ctx, 20);
adamc@666	2072 strcpy(ctx->page.front, "<i>Invalid time</i>");
adamc@666	2073 ctx->page.front += 19;
adamc@436	2074 }
adamc@436	2075
adamc@436	2076 return uw_unit_v;
adamc@436	2077 }
adamc@436	2078
adamc@821	2079 uw_Basis_char uw_Basis_strsub(uw_context ctx, uw_Basis_string s, uw_Basis_int n) {
adamc@821	2080 if (n >= 0 && n < strlen(s))
adamc@821	2081 return s[n];
adamc@821	2082 else
adamc@821	2083 uw_error(ctx, FATAL, "Out-of-bounds strsub");
adamc@821	2084 }
adamc@821	2085
adamc@821	2086 uw_Basis_string uw_Basis_strsuffix(uw_context ctx, uw_Basis_string s, uw_Basis_int n) {
adamc@821	2087 if (n >= 0 && n < strlen(s))
adamc@821	2088 return &s[n];
adamc@821	2089 else
adamc@821	2090 uw_error(ctx, FATAL, "Out-of-bounds strsuffix");
adamc@821	2091 }
adamc@821	2092
adamc@828	2093 uw_Basis_int uw_Basis_strlen(uw_context ctx, uw_Basis_string s) {
adamc@828	2094 return strlen(s);
adamc@828	2095 }
adamc@828	2096
adamc@829	2097 uw_Basis_string uw_Basis_strchr(uw_context ctx, uw_Basis_string s, uw_Basis_char ch) {
adamc@829	2098 return strchr(s, ch);
adamc@829	2099 }
adamc@829	2100
adamc@831	2101 uw_Basis_int uw_Basis_strcspn(uw_context ctx, uw_Basis_string s, uw_Basis_string chs) {
adamc@831	2102 return strcspn(s, chs);
adamc@831	2103 }
adamc@831	2104
adamc@829	2105 uw_Basis_int *uw_Basis_strindex(uw_context ctx, uw_Basis_string s, uw_Basis_char ch) {
adamc@829	2106 uw_Basis_string r = strchr(s, ch);
adamc@829	2107 if (r == NULL)
adamc@829	2108 return NULL;
adamc@829	2109 else {
adamc@829	2110 uw_Basis_int *nr = uw_malloc(ctx, sizeof(uw_Basis_int));
adamc@829	2111 *nr = r - s;
adamc@829	2112 return nr;
adamc@829	2113 }
adamc@829	2114 }
adamc@829	2115
adamc@311	2116 uw_Basis_string uw_Basis_strcat(uw_context ctx, uw_Basis_string s1, uw_Basis_string s2) {
adamc@828	2117 int len = uw_Basis_strlen(ctx, s1) + uw_Basis_strlen(ctx, s2) + 1;
adamc@180	2118 char *s;
adamc@180	2119
adamc@311	2120 uw_check_heap(ctx, len);
adamc@180	2121
adamc@666	2122 s = ctx->heap.front;
adamc@180	2123
adamc@180	2124 strcpy(s, s1);
adamc@180	2125 strcat(s, s2);
adamc@666	2126 ctx->heap.front += len;
adamc@180	2127
adamc@180	2128 return s;
adamc@180	2129 }
adamc@278	2130
adamc@829	2131 uw_Basis_string uw_Basis_substring(uw_context ctx, uw_Basis_string s, uw_Basis_int start, uw_Basis_int len) {
adamc@829	2132 size_t full_len = uw_Basis_strlen(ctx, s);
adamc@829	2133
adamc@829	2134 if (start < 0)
adamc@829	2135 uw_error(ctx, FATAL, "substring: Negative start index");
adamc@829	2136 if (len < 0)
adamc@829	2137 uw_error(ctx, FATAL, "substring: Negative length");
adamc@829	2138 if (start + len > full_len)
adamc@829	2139 uw_error(ctx, FATAL, "substring: Start index plus length is too large");
adamc@829	2140
adamc@829	2141 if (start + len == full_len)
adamc@829	2142 return &s[start];
adamc@829	2143 else {
adamc@829	2144 uw_Basis_string r = uw_malloc(ctx, len+1);
adamc@959	2145 memcpy(r, s+start, len);
adamc@829	2146 r[len] = 0;
adamc@829	2147 return r;
adamc@829	2148 }
adamc@829	2149
adamc@829	2150 }
adamc@829	2151
adamc@1023	2152 uw_Basis_string uw_Basis_str1(uw_context ctx, uw_Basis_char ch) {
adamc@1023	2153 char *r;
adamc@1023	2154
adamc@1023	2155 uw_check_heap(ctx, 2);
adamc@1023	2156 r = ctx->heap.front;
adamc@1023	2157 r[0] = ch;
adamc@1023	2158 r[1] = 0;
adamc@1023	2159
adamc@1023	2160 ctx->heap.front += 2;
adamc@1023	2161
adamc@1023	2162 return r;
adamc@1023	2163 }
adamc@1023	2164
adamc@737	2165 uw_Basis_string uw_strdup(uw_context ctx, uw_Basis_string s1) {
adamc@828	2166 int len = uw_Basis_strlen(ctx, s1) + 1;
adamc@278	2167 char *s;
adamc@278	2168
adamc@311	2169 uw_check_heap(ctx, len);
adamc@278	2170
adamc@666	2171 s = ctx->heap.front;
adamc@278	2172
adamc@278	2173 strcpy(s, s1);
adamc@666	2174 ctx->heap.front += len;
adamc@278	2175
adamc@278	2176 return s;
adamc@278	2177 }
adamc@280	2178
adam@1295	2179 uw_Basis_string uw_dup_and_clear_error_message(uw_context ctx) {
adam@1295	2180 if (ctx->error_message[0]) {
adam@1295	2181 char *s = uw_strdup(ctx, ctx->error_message);
adam@1295	2182 ctx->error_message[0] = 0;
adam@1295	2183 return s;
adam@1295	2184 } else
adam@1295	2185 return NULL;
adam@1295	2186 }
adam@1295	2187
adamc@737	2188 uw_Basis_string uw_maybe_strdup(uw_context ctx, uw_Basis_string s1) {
adamc@493	2189 if (s1)
adamc@737	2190 return uw_strdup(ctx, s1);
adamc@493	2191 else
adamc@493	2192 return NULL;
adamc@493	2193 }
adamc@493	2194
adamc@742	2195 char uw_memdup(uw_context ctx, const char p, size_t len) {
adamc@742	2196 char *r = uw_malloc(ctx, len);
adamc@742	2197 memcpy(r, p, len);
adamc@742	2198 return r;
adamc@742	2199 }
adamc@280	2200
adamc@879	2201 char *uw_sqlfmtInt = "%lld::int8%n";
adamc@879	2202
adamc@311	2203 char *uw_Basis_sqlifyInt(uw_context ctx, uw_Basis_int n) {
adamc@281	2204 int len;
adamc@281	2205 char *r;
adamc@281	2206
adamc@311	2207 uw_check_heap(ctx, INTS_MAX + 6);
adamc@666	2208 r = ctx->heap.front;
adamc@879	2209 sprintf(r, uw_sqlfmtInt, n, &len);
adamc@666	2210 ctx->heap.front += len+1;
adamc@281	2211 return r;
adamc@281	2212 }
adamc@281	2213
adamc@467	2214 char uw_Basis_sqlifyIntN(uw_context ctx, uw_Basis_int n) {
adamc@467	2215 if (n == NULL)
adamc@467	2216 return "NULL";
adamc@467	2217 else
adamc@467	2218 return uw_Basis_sqlifyInt(ctx, *n);
adamc@467	2219 }
adamc@467	2220
adamc@879	2221 char *uw_sqlfmtFloat = "%g::float8%n";
adamc@879	2222
adamc@311	2223 char *uw_Basis_sqlifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@281	2224 int len;
adamc@281	2225 char *r;
adamc@281	2226
adamc@311	2227 uw_check_heap(ctx, FLOATS_MAX + 8);
adamc@666	2228 r = ctx->heap.front;
adamc@879	2229 sprintf(r, uw_sqlfmtFloat, n, &len);
adamc@666	2230 ctx->heap.front += len+1;
adamc@281	2231 return r;
adamc@281	2232 }
adamc@281	2233
adamc@467	2234 char uw_Basis_sqlifyFloatN(uw_context ctx, uw_Basis_float n) {
adamc@467	2235 if (n == NULL)
adamc@467	2236 return "NULL";
adamc@467	2237 else
adamc@467	2238 return uw_Basis_sqlifyFloat(ctx, *n);
adamc@467	2239 }
adamc@467	2240
adamc@879	2241 int uw_Estrings = 1;
adamc@879	2242 char *uw_sqlsuffixString = "::text";
adamc@1011	2243 char *uw_sqlsuffixChar = "::char";
adamc@281	2244
adamc@311	2245 uw_Basis_string uw_Basis_sqlifyString(uw_context ctx, uw_Basis_string s) {
adamc@280	2246 char r, s2;
adamc@280	2247
adamc@879	2248 uw_check_heap(ctx, strlen(s) * 2 + 3 + uw_Estrings + strlen(uw_sqlsuffixString));
adamc@280	2249
adamc@666	2250 r = s2 = ctx->heap.front;
adamc@879	2251 if (uw_Estrings)
adamc@879	2252 *s2++ = 'E';
adamc@280	2253 *s2++ = '\'';
adamc@280	2254
adamc@280	2255 for (; *s; s++) {
adamc@280	2256 char c = *s;
adamc@280	2257
adamc@280	2258 switch (c) {
adamc@280	2259 case '\'':
adamc@885	2260 if (uw_Estrings)
adamc@885	2261 strcpy(s2, "\\'");
adamc@885	2262 else
adamc@885	2263 strcpy(s2, "''");
adamc@280	2264 s2 += 2;
adamc@280	2265 break;
adamc@280	2266 case '\\':
adamc@885	2267 if (uw_Estrings) {
adamc@885	2268 strcpy(s2, "\\\\");
adamc@885	2269 s2 += 2;
adamc@885	2270 } else
adamc@885	2271 *s2++ = '\\';
adamc@280	2272 break;
adamc@280	2273 default:
adamc@1150	2274 if (isprint((int)c))
adamc@280	2275 *s2++ = c;
adamc@879	2276 else if (uw_Estrings) {
adamc@737	2277 sprintf(s2, "\\%03o", c);
adamc@280	2278 s2 += 4;
adamc@280	2279 }
adamc@879	2280 else
adamc@879	2281 uw_error(ctx, FATAL, "Non-printable character %u in string to SQLify", c);
adamc@280	2282 }
adamc@280	2283 }
adamc@280	2284
adamc@879	2285 *s2++ = '\'';
adamc@879	2286 strcpy(s2, uw_sqlsuffixString);
adamc@879	2287 ctx->heap.front = s2 + 1 + strlen(uw_sqlsuffixString);
adamc@280	2288 return r;
adamc@280	2289 }
adamc@281	2290
adamc@1011	2291 uw_Basis_string uw_Basis_sqlifyChar(uw_context ctx, uw_Basis_char c) {
adamc@1011	2292 char r, s2;
adamc@1011	2293
adamc@1011	2294 uw_check_heap(ctx, 5 + uw_Estrings + strlen(uw_sqlsuffixChar));
adamc@1011	2295
adamc@1011	2296 r = s2 = ctx->heap.front;
adamc@1011	2297 if (uw_Estrings)
adamc@1011	2298 *s2++ = 'E';
adamc@1011	2299 *s2++ = '\'';
adamc@1011	2300
adamc@1011	2301 switch (c) {
adamc@1011	2302 case '\'':
adamc@1011	2303 if (uw_Estrings)
adamc@1011	2304 strcpy(s2, "\\'");
adamc@1011	2305 else
adamc@1011	2306 strcpy(s2, "''");
adamc@1011	2307 s2 += 2;
adamc@1011	2308 break;
adamc@1011	2309 case '\\':
adamc@1011	2310 if (uw_Estrings) {
adamc@1011	2311 strcpy(s2, "\\\\");
adamc@1011	2312 s2 += 2;
adamc@1011	2313 } else
adamc@1011	2314 *s2++ = '\\';
adamc@1011	2315 break;
adamc@1011	2316 default:
adamc@1150	2317 if (isprint((int)c))
adamc@1011	2318 *s2++ = c;
adamc@1011	2319 else if (uw_Estrings) {
adamc@1011	2320 sprintf(s2, "\\%03o", c);
adamc@1011	2321 s2 += 4;
adamc@1011	2322 }
adamc@1011	2323 else
adamc@1011	2324 uw_error(ctx, FATAL, "Non-printable character %u in char to SQLify", c);
adamc@1011	2325 }
adamc@1011	2326
adamc@1011	2327 *s2++ = '\'';
adamc@1011	2328 strcpy(s2, uw_sqlsuffixChar);
adamc@1011	2329 ctx->heap.front = s2 + 1 + strlen(uw_sqlsuffixChar);
adamc@1011	2330 return r;
adamc@1011	2331 }
adamc@1011	2332
adamc@879	2333 char *uw_sqlsuffixBlob = "::bytea";
adamc@879	2334
adamc@737	2335 uw_Basis_string uw_Basis_sqlifyBlob(uw_context ctx, uw_Basis_blob b) {
adamc@737	2336 char r, s2;
adamc@737	2337 size_t i;
adamc@737	2338
adamc@879	2339 uw_check_heap(ctx, b.size * 5 + 3 + uw_Estrings + strlen(uw_sqlsuffixBlob));
adamc@737	2340
adamc@737	2341 r = s2 = ctx->heap.front;
adamc@879	2342 if (uw_Estrings)
adamc@879	2343 *s2++ = 'E';
adamc@737	2344 *s2++ = '\'';
adamc@737	2345
adamc@737	2346 for (i = 0; i < b.size; ++i) {
adamc@737	2347 char c = b.data[i];
adamc@737	2348
adamc@737	2349 switch (c) {
adamc@737	2350 case '\'':
adamc@885	2351 if (uw_Estrings)
adamc@885	2352 strcpy(s2, "\\'");
adamc@885	2353 else
adamc@885	2354 strcpy(s2, "''");
adamc@737	2355 s2 += 2;
adamc@737	2356 break;
adamc@737	2357 case '\\':
adamc@885	2358 if (uw_Estrings) {
adamc@885	2359 strcpy(s2, "\\\\\\\\");
adamc@885	2360 s2 += 4;
adamc@885	2361 } else
adamc@885	2362 *s2++ = '\\';
adamc@737	2363 break;
adamc@737	2364 default:
adamc@1150	2365 if (isprint((int)c))
adamc@737	2366 *s2++ = c;
adamc@879	2367 else if (uw_Estrings) {
adamc@737	2368 sprintf(s2, "\\\\%03o", c);
adamc@737	2369 s2 += 5;
adamc@737	2370 }
adamc@879	2371 else
adamc@879	2372 uw_error(ctx, FATAL, "Non-printable character %u in blob to SQLify", c);
adamc@737	2373 }
adamc@737	2374 }
adamc@737	2375
adamc@879	2376 *s2++ = '\'';
adamc@879	2377 strcpy(s2, uw_sqlsuffixBlob);
adamc@879	2378 ctx->heap.front = s2 + 1 + strlen(uw_sqlsuffixBlob);
adamc@737	2379 return r;
adamc@737	2380 }
adamc@737	2381
adamc@682	2382 char *uw_Basis_sqlifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	2383 int len;
adamc@682	2384 char *r;
adamc@682	2385 unsigned long long combo = ((unsigned long long)chn.cli << 32) \| chn.chn;
adamc@682	2386
adamc@682	2387 uw_check_heap(ctx, INTS_MAX + 7);
adamc@682	2388 r = ctx->heap.front;
adamc@879	2389 sprintf(r, uw_sqlfmtInt, combo, &len);
adamc@682	2390 ctx->heap.front += len+1;
adamc@682	2391 return r;
adamc@682	2392 }
adamc@682	2393
adamc@682	2394 char *uw_Basis_attrifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	2395 int len;
adamc@682	2396 char *r;
adamc@682	2397 unsigned long long combo = ((unsigned long long)chn.cli << 32) \| chn.chn;
adamc@682	2398
adamc@682	2399 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	2400 r = ctx->heap.front;
adamc@682	2401 sprintf(r, "%lld%n", combo, &len);
adamc@682	2402 ctx->heap.front += len+1;
adamc@682	2403 return r;
adamc@682	2404 }
adamc@682	2405
adamc@879	2406 char *uw_sqlfmtUint4 = "%u::int4%n";
adamc@879	2407
adamc@682	2408 char *uw_Basis_sqlifyClient(uw_context ctx, uw_Basis_client cli) {
adamc@682	2409 int len;
adamc@682	2410 char *r;
adamc@682	2411
adamc@682	2412 uw_check_heap(ctx, INTS_MAX + 7);
adamc@682	2413 r = ctx->heap.front;
adamc@879	2414 sprintf(r, uw_sqlfmtUint4, cli, &len);
adamc@682	2415 ctx->heap.front += len+1;
adamc@682	2416 return r;
adamc@682	2417 }
adamc@682	2418
adamc@682	2419 char *uw_Basis_attrifyClient(uw_context ctx, uw_Basis_client cli) {
adamc@682	2420 int len;
adamc@682	2421 char *r;
adamc@682	2422
adamc@682	2423 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	2424 r = ctx->heap.front;
adamc@682	2425 sprintf(r, "%u%n", cli, &len);
adamc@682	2426 ctx->heap.front += len+1;
adamc@682	2427 return r;
adamc@682	2428 }
adamc@682	2429
adamc@467	2430 uw_Basis_string uw_Basis_sqlifyStringN(uw_context ctx, uw_Basis_string s) {
adamc@467	2431 if (s == NULL)
adamc@467	2432 return "NULL";
adamc@467	2433 else
adamc@467	2434 return uw_Basis_sqlifyString(ctx, s);
adamc@467	2435 }
adamc@467	2436
adamc@311	2437 char *uw_Basis_sqlifyBool(uw_context ctx, uw_Basis_bool b) {
adamc@311	2438 if (b == uw_Basis_False)
adamc@281	2439 return "FALSE";
adamc@281	2440 else
adamc@281	2441 return "TRUE";
adamc@281	2442 }
adamc@282	2443
adamc@467	2444 char uw_Basis_sqlifyBoolN(uw_context ctx, uw_Basis_bool b) {
adamc@467	2445 if (b == NULL)
adamc@467	2446 return "NULL";
adamc@467	2447 else
adamc@467	2448 return uw_Basis_sqlifyBool(ctx, *b);
adamc@467	2449 }
adamc@467	2450
adamc@439	2451 char *uw_Basis_sqlifyTime(uw_context ctx, uw_Basis_time t) {
adamc@439	2452 size_t len;
adamc@682	2453 char r, s;
adamc@682	2454 struct tm stm;
adamc@682	2455
adamc@682	2456 if (localtime_r(&t, &stm)) {
adamc@682	2457 s = uw_malloc(ctx, TIMES_MAX);
adamc@682	2458 len = strftime(s, TIMES_MAX, TIME_FMT, &stm);
adamc@682	2459 r = uw_malloc(ctx, len + 14);
adamc@682	2460 sprintf(r, "'%s'::timestamp", s);
adamc@682	2461 return r;
adamc@682	2462 } else
adamc@682	2463 return "<Invalid time>";
adamc@682	2464 }
adamc@682	2465
adamc@682	2466 char *uw_Basis_attrifyTime(uw_context ctx, uw_Basis_time t) {
adamc@682	2467 size_t len;
adamc@439	2468 char *r;
adamc@439	2469 struct tm stm;
adamc@439	2470
adamc@439	2471 if (localtime_r(&t, &stm)) {
adamc@439	2472 uw_check_heap(ctx, TIMES_MAX);
adamc@666	2473 r = ctx->heap.front;
adamc@439	2474 len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
adamc@666	2475 ctx->heap.front += len+1;
adamc@439	2476 return r;
adamc@439	2477 } else
adamc@439	2478 return "<Invalid time>";
adamc@439	2479 }
adamc@439	2480
adamc@467	2481 char uw_Basis_sqlifyTimeN(uw_context ctx, uw_Basis_time t) {
adamc@467	2482 if (t == NULL)
adamc@467	2483 return "NULL";
adamc@467	2484 else
adamc@467	2485 return uw_Basis_sqlifyTime(ctx, *t);
adamc@467	2486 }
adamc@467	2487
adamc@311	2488 char *uw_Basis_ensqlBool(uw_Basis_bool b) {
adamc@311	2489 static uw_Basis_int true = 1;
adamc@311	2490 static uw_Basis_int false = 0;
adamc@282	2491
adamc@311	2492 if (b == uw_Basis_False)
adamc@282	2493 return (char *)&false;
adamc@282	2494 else
adamc@282	2495 return (char *)&true;
adamc@282	2496 }
adamc@284	2497
adamc@311	2498 uw_Basis_string uw_Basis_intToString(uw_context ctx, uw_Basis_int n) {
adamc@284	2499 int len;
adamc@284	2500 char *r;
adamc@284	2501
adamc@311	2502 uw_check_heap(ctx, INTS_MAX);
adamc@666	2503 r = ctx->heap.front;
adamc@284	2504 sprintf(r, "%lld%n", n, &len);
adamc@666	2505 ctx->heap.front += len+1;
adamc@284	2506 return r;
adamc@284	2507 }
adamc@285	2508
adamc@311	2509 uw_Basis_string uw_Basis_floatToString(uw_context ctx, uw_Basis_float n) {
adamc@285	2510 int len;
adamc@285	2511 char *r;
adamc@285	2512
adamc@311	2513 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	2514 r = ctx->heap.front;
adamc@285	2515 sprintf(r, "%g%n", n, &len);
adamc@666	2516 ctx->heap.front += len+1;
adamc@285	2517 return r;
adamc@285	2518 }
adamc@285	2519
adamc@821	2520 uw_Basis_string uw_Basis_charToString(uw_context ctx, uw_Basis_char ch) {
adamc@821	2521 char *r = uw_malloc(ctx, 2);
adamc@821	2522 r[0] = ch;
adamc@821	2523 r[1] = 0;
adamc@821	2524 return r;
adamc@821	2525 }
adamc@821	2526
adamc@311	2527 uw_Basis_string uw_Basis_boolToString(uw_context ctx, uw_Basis_bool b) {
adamc@311	2528 if (b == uw_Basis_False)
adamc@285	2529 return "False";
adamc@285	2530 else
adamc@285	2531 return "True";
adamc@285	2532 }
adamc@288	2533
adamc@436	2534 uw_Basis_string uw_Basis_timeToString(uw_context ctx, uw_Basis_time t) {
adamc@436	2535 size_t len;
adamc@436	2536 char *r;
adamc@436	2537 struct tm stm;
adamc@436	2538
adamc@436	2539 if (localtime_r(&t, &stm)) {
adamc@436	2540 uw_check_heap(ctx, TIMES_MAX);
adamc@666	2541 r = ctx->heap.front;
adamc@436	2542 len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
adamc@666	2543 ctx->heap.front += len+1;
adamc@436	2544 return r;
adamc@436	2545 } else
adamc@436	2546 return "<Invalid time>";
adamc@436	2547 }
adamc@288	2548
adamc@311	2549 uw_Basis_int *uw_Basis_stringToInt(uw_context ctx, uw_Basis_string s) {
adamc@288	2550 char *endptr;
adamc@311	2551 uw_Basis_int n = strtoll(s, &endptr, 10);
adamc@288	2552
adamc@288	2553 if (s != '\0' && endptr == '\0') {
adamc@311	2554 uw_Basis_int *r = uw_malloc(ctx, sizeof(uw_Basis_int));
adamc@288	2555 *r = n;
adamc@288	2556 return r;
adamc@288	2557 } else
adamc@288	2558 return NULL;
adamc@288	2559 }
adamc@289	2560
adamc@311	2561 uw_Basis_float *uw_Basis_stringToFloat(uw_context ctx, uw_Basis_string s) {
adamc@289	2562 char *endptr;
adamc@311	2563 uw_Basis_float n = strtod(s, &endptr);
adamc@289	2564
adamc@289	2565 if (s != '\0' && endptr == '\0') {
adamc@311	2566 uw_Basis_float *r = uw_malloc(ctx, sizeof(uw_Basis_float));
adamc@289	2567 *r = n;
adamc@289	2568 return r;
adamc@289	2569 } else
adamc@289	2570 return NULL;
adamc@289	2571 }
adamc@289	2572
adamc@821	2573 uw_Basis_char *uw_Basis_stringToChar(uw_context ctx, uw_Basis_string s) {
adamc@821	2574 if (s[0] == 0) {
adamc@821	2575 uw_Basis_char *r = uw_malloc(ctx, 1);
adamc@821	2576 r[0] = 0;
adamc@821	2577 return r;
adamc@821	2578 } else if (s[1] != 0)
adamc@821	2579 return NULL;
adamc@821	2580 else {
adamc@821	2581 uw_Basis_char *r = uw_malloc(ctx, 1);
adamc@821	2582 r[0] = s[0];
adamc@821	2583 return r;
adamc@821	2584 }
adamc@821	2585 }
adamc@821	2586
adamc@311	2587 uw_Basis_bool *uw_Basis_stringToBool(uw_context ctx, uw_Basis_string s) {
adamc@311	2588 static uw_Basis_bool true = uw_Basis_True;
adamc@311	2589 static uw_Basis_bool false = uw_Basis_False;
adamc@289	2590
adamc@289	2591 if (!strcasecmp (s, "True"))
adamc@289	2592 return &true;
adamc@289	2593 else if (!strcasecmp (s, "False"))
adamc@289	2594 return &false;
adamc@289	2595 else
adamc@289	2596 return NULL;
adamc@289	2597 }
adamc@292	2598
adamc@436	2599 uw_Basis_time *uw_Basis_stringToTime(uw_context ctx, uw_Basis_string s) {
adamc@438	2600 char dot = strchr(s, '.'), end = strchr(s, 0);
adamc@436	2601 struct tm stm;
adamc@436	2602
adamc@439	2603 if (dot) {
adamc@439	2604 *dot = 0;
adamc@439	2605 if (strptime(s, TIME_FMT_PG, &stm) == end) {
adamc@439	2606 *dot = '.';
adamc@439	2607 uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
adamc@439	2608 *r = mktime(&stm);
adamc@439	2609 return r;
adamc@439	2610 }
adamc@439	2611 else {
adamc@439	2612 *dot = '.';
adamc@439	2613 return NULL;
adamc@439	2614 }
adamc@436	2615 }
adamc@439	2616 else {
adamc@439	2617 if (strptime(s, TIME_FMT_PG, &stm) == end) {
adamc@439	2618 uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
adamc@439	2619 *r = mktime(&stm);
adamc@439	2620 return r;
adamc@439	2621 }
adamc@439	2622 else if (strptime(s, TIME_FMT, &stm) == end) {
adamc@439	2623 uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
adamc@439	2624 *r = mktime(&stm);
adamc@439	2625 return r;
adamc@439	2626 }
adamc@439	2627 else
adamc@439	2628 return NULL;
adamc@439	2629 }
adamc@436	2630 }
adamc@436	2631
adamc@311	2632 uw_Basis_int uw_Basis_stringToInt_error(uw_context ctx, uw_Basis_string s) {
adamc@292	2633 char *endptr;
adamc@311	2634 uw_Basis_int n = strtoll(s, &endptr, 10);
adamc@292	2635
adamc@292	2636 if (s != '\0' && endptr == '\0')
adamc@292	2637 return n;
adamc@292	2638 else
adamc@311	2639 uw_error(ctx, FATAL, "Can't parse int: %s", s);
adamc@292	2640 }
adamc@293	2641
adamc@682	2642 #include <errno.h>
adamc@682	2643
adamc@678	2644 uw_Basis_channel uw_Basis_stringToChannel_error(uw_context ctx, uw_Basis_string s) {
adamc@682	2645 unsigned long long n;
adamc@682	2646
adamc@682	2647 if (sscanf(s, "%llu", &n) < 1)
adamc@682	2648 uw_error(ctx, FATAL, "Can't parse channel: %s", s);
adamc@682	2649 else {
adamc@682	2650 uw_Basis_channel ch = {n >> 32, n & ((1ull << 32) - 1)};
adamc@682	2651 return ch;
adamc@682	2652 }
adamc@682	2653 }
adamc@682	2654
adamc@682	2655 uw_Basis_client uw_Basis_stringToClient_error(uw_context ctx, uw_Basis_string s) {
adamc@678	2656 char *endptr;
adamc@682	2657 unsigned long n = strtoul(s, &endptr, 10);
adamc@678	2658
adamc@678	2659 if (s != '\0' && endptr == '\0')
adamc@678	2660 return n;
adamc@678	2661 else
adamc@682	2662 uw_error(ctx, FATAL, "Can't parse client: %s", s);
adamc@678	2663 }
adamc@678	2664
adamc@311	2665 uw_Basis_float uw_Basis_stringToFloat_error(uw_context ctx, uw_Basis_string s) {
adamc@293	2666 char *endptr;
adamc@311	2667 uw_Basis_float n = strtod(s, &endptr);
adamc@293	2668
adamc@293	2669 if (s != '\0' && endptr == '\0')
adamc@293	2670 return n;
adamc@293	2671 else
adamc@311	2672 uw_error(ctx, FATAL, "Can't parse float: %s", s);
adamc@293	2673 }
adamc@293	2674
adamc@821	2675 uw_Basis_char uw_Basis_stringToChar_error(uw_context ctx, uw_Basis_string s) {
adamc@821	2676 if (s[0] == 0)
adamc@821	2677 return 0;
adamc@821	2678 else if (s[1] != 0)
adamc@821	2679 uw_error(ctx, FATAL, "Can't parse char: %s", s);
adamc@821	2680 else
adamc@821	2681 return s[0];
adamc@821	2682 }
adamc@821	2683
adamc@311	2684 uw_Basis_bool uw_Basis_stringToBool_error(uw_context ctx, uw_Basis_string s) {
adamc@296	2685 if (!strcasecmp(s, "T") \|\| !strcasecmp (s, "True"))
adamc@311	2686 return uw_Basis_True;
adamc@296	2687 else if (!strcasecmp(s, "F") \|\| !strcasecmp (s, "False"))
adamc@311	2688 return uw_Basis_False;
adamc@293	2689 else
adamc@311	2690 uw_error(ctx, FATAL, "Can't parse bool: %s", s);
adamc@293	2691 }
adamc@436	2692
adamc@436	2693 uw_Basis_time uw_Basis_stringToTime_error(uw_context ctx, uw_Basis_string s) {
adamc@438	2694 char dot = strchr(s, '.'), end = strchr(s, 0);
adamc@436	2695 struct tm stm = {};
adamc@436	2696
adamc@438	2697 if (dot) {
adamc@438	2698 *dot = 0;
adamc@438	2699 if (strptime(s, TIME_FMT_PG, &stm)) {
adamc@438	2700 *dot = '.';
adamc@438	2701 return mktime(&stm);
adamc@438	2702 }
adamc@438	2703 else {
adamc@438	2704 *dot = '.';
adamc@438	2705 uw_error(ctx, FATAL, "Can't parse time: %s", s);
adamc@438	2706 }
adamc@438	2707 }
adamc@438	2708 else {
adamc@439	2709 if (strptime(s, TIME_FMT_PG, &stm) == end)
adamc@439	2710 return mktime(&stm);
adamc@439	2711 else if (strptime(s, TIME_FMT, &stm) == end)
adamc@438	2712 return mktime(&stm);
adamc@438	2713 else
adamc@438	2714 uw_error(ctx, FATAL, "Can't parse time: %s", s);
adamc@438	2715 }
adamc@436	2716 }
adamc@457	2717
adamc@939	2718 uw_Basis_time uw_Basis_unsqlTime(uw_context ctx, uw_Basis_string s) {
adamc@939	2719 char dot = strchr(s, '.'), end = strchr(s, 0);
adamc@939	2720 struct tm stm = {};
adamc@939	2721
adamc@939	2722 if (dot) {
adamc@939	2723 *dot = 0;
adamc@939	2724 if (strptime(s, TIME_FMT_PG, &stm)) {
adamc@939	2725 *dot = '.';
adamc@939	2726 return mktime(&stm);
adamc@939	2727 }
adamc@939	2728 else {
adamc@939	2729 *dot = '.';
adamc@939	2730 uw_error(ctx, FATAL, "Can't parse time: %s", s);
adamc@939	2731 }
adamc@939	2732 }
adamc@939	2733 else {
adamc@939	2734 if (strptime(s, TIME_FMT_PG, &stm) == end) {
adamc@939	2735 return mktime(&stm);
adamc@939	2736 } else if (strptime(s, TIME_FMT, &stm) == end) {
adamc@939	2737 return mktime(&stm);
adamc@939	2738 } else
adamc@939	2739 uw_error(ctx, FATAL, "Can't parse time: %s", s);
adamc@939	2740 }
adamc@939	2741 }
adamc@939	2742
adamc@742	2743 uw_Basis_blob uw_Basis_stringToBlob_error(uw_context ctx, uw_Basis_string s, size_t len) {
adamc@742	2744 char *r = ctx->heap.front;
adamc@742	2745 uw_Basis_blob b = {len, r};
adamc@742	2746
adamc@742	2747 uw_check_heap(ctx, len);
adamc@742	2748
adamc@742	2749 while (*s) {
adamc@742	2750 if (s[0] == '\\') {
adamc@742	2751 if (s[1] == '\\') {
adamc@742	2752 *r++ = '\\';
adamc@742	2753 s += 2;
adamc@1153	2754 } else if (isdigit((int)s[1]) && isdigit((int)s[2]) && isdigit((int)s[3])) {
adamc@742	2755 r++ = (s[1] - '0') 8 * 8 + ((s[2] - '0') * 8) + (s[3] - '0');
adamc@742	2756 s += 4;
adamc@742	2757 }
adamc@742	2758 else {
adamc@742	2759 *r++ = '\\';
adamc@742	2760 ++s;
adamc@742	2761 }
adamc@742	2762 } else {
adamc@742	2763 *r++ = s[0];
adamc@742	2764 ++s;
adamc@742	2765 }
adamc@742	2766 }
adamc@742	2767
adamc@742	2768 b.size = r - ctx->heap.front;
adamc@742	2769 ctx->heap.front = r;
adamc@742	2770 return b;
adamc@742	2771 }
adamc@742	2772
adamc@1052	2773 #define THE_PAST "expires=Mon, 01-01-1970 00:00:00 GMT"
adamc@1052	2774
adamc@463	2775 uw_Basis_string uw_Basis_get_cookie(uw_context ctx, uw_Basis_string c) {
adamc@463	2776 int len = strlen(c);
adamc@854	2777 char *p = ctx->outHeaders.start;
adamc@474	2778
adamc@1134	2779 while ((p = strstr(p, "\nSet-Cookie: "))) {
adamc@474	2780 char *p2;
adamc@474	2781 p += 13;
adamc@474	2782 p2 = strchr(p, '=');
adamc@474	2783
adamc@474	2784 if (p2) {
adamc@474	2785 size_t sz = strcspn(p2+1, ";\r\n");
adamc@474	2786
adamc@474	2787 if (!strncasecmp(p, c, p2 - p)) {
adamc@1052	2788 if (sz == 0 && strstr(p2+2, THE_PAST))
adamc@1052	2789 return NULL;
adamc@1052	2790 else {
adamc@1052	2791 char *ret = uw_malloc(ctx, sz + 1);
adamc@1052	2792 memcpy(ret, p2+1, sz);
adamc@1052	2793 ret[sz] = 0;
adamc@1052	2794 return ret;
adamc@1052	2795 }
adamc@474	2796 }
adamc@474	2797 }
adamc@474	2798 }
adamc@463	2799
adamc@1134	2800 if ((p = uw_Basis_requestHeader(ctx, "Cookie"))) {
adamc@1051	2801 char *p2;
adamc@1051	2802
adamc@854	2803 while (1) {
adamc@1051	2804 if (!strncmp(p, c, len) && p[len] == '=') {
adamc@1134	2805 if ((p2 = strchr(p, ';'))) {
adamc@1051	2806 size_t n = p2 - (p + len);
adamc@1051	2807 char *r = uw_malloc(ctx, n);
adamc@1051	2808 memcpy(r, p + 1 + len, n-1);
adamc@1051	2809 r[n-1] = 0;
adamc@1051	2810 return r;
adamc@1051	2811 } else
adamc@1051	2812 return p + 1 + len;
adamc@1134	2813 } else if ((p = strchr(p, ';')))
adamc@854	2814 p += 2;
adamc@463	2815 else
adamc@463	2816 return NULL;
adamc@463	2817 }
adamc@463	2818 }
adamc@792	2819
adamc@792	2820 return NULL;
adamc@457	2821 }
adamc@462	2822
adamc@1050	2823 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	2824 uw_write_header(ctx, "Set-Cookie: ");
adamc@462	2825 uw_write_header(ctx, c);
adamc@462	2826 uw_write_header(ctx, "=");
adamc@462	2827 uw_write_header(ctx, v);
adamc@466	2828 uw_write_header(ctx, "; path=");
adamc@466	2829 uw_write_header(ctx, prefix);
adamc@1050	2830 if (expires) {
adamc@1050	2831 char formatted[30];
adamc@1050	2832 struct tm tm;
adamc@1050	2833
adamc@1050	2834 gmtime_r(expires, &tm);
adamc@1050	2835
adamc@1050	2836 strftime(formatted, sizeof formatted, "%a, %d-%b-%Y %T GMT", &tm);
adamc@1050	2837
adamc@1050	2838 uw_write_header(ctx, "; expires=");
adamc@1050	2839 uw_write_header(ctx, formatted);
adamc@1050	2840 }
adamc@1050	2841 if (secure)
adamc@1050	2842 uw_write_header(ctx, "; secure");
adamc@462	2843 uw_write_header(ctx, "\r\n");
adamc@462	2844
adamc@462	2845 return uw_unit_v;
adamc@462	2846 }
adamc@667	2847
adamc@1050	2848 uw_unit uw_Basis_clear_cookie(uw_context ctx, uw_Basis_string prefix, uw_Basis_string c) {
adamc@1050	2849 uw_write_header(ctx, "Set-Cookie: ");
adamc@1050	2850 uw_write_header(ctx, c);
adamc@1050	2851 uw_write_header(ctx, "=; path=");
adamc@1050	2852 uw_write_header(ctx, prefix);
adamc@1052	2853 uw_write_header(ctx, "; " THE_PAST "\r\n");
adamc@1050	2854
adamc@1050	2855 return uw_unit_v;
adamc@1050	2856 }
adamc@1050	2857
adamc@1113	2858 size_t uw_deltas_max = SIZE_MAX;
adamc@1113	2859
adamc@682	2860 static delta *allocate_delta(uw_context ctx, unsigned client) {
adamc@682	2861 unsigned i;
adamc@682	2862 delta *d;
adamc@671	2863
adamc@682	2864 for (i = 0; i < ctx->used_deltas; ++i)
adamc@682	2865 if (ctx->deltas[i].client == client)
adamc@682	2866 return &ctx->deltas[i];
adamc@671	2867
adamc@682	2868 if (ctx->used_deltas >= ctx->n_deltas) {
adamc@1113	2869 if (ctx->n_deltas + 1 > uw_deltas_max)
adamc@1113	2870 uw_error(ctx, FATAL, "Exceeded limit on number of deltas");
adamc@1113	2871
adamc@682	2872 ctx->deltas = realloc(ctx->deltas, sizeof(delta) * ++ctx->n_deltas);
adamc@1113	2873 buf_init(uw_messages_max, &ctx->deltas[ctx->n_deltas-1].msgs, 0);
adamc@682	2874 }
adamc@671	2875
adamc@682	2876 d = &ctx->deltas[ctx->used_deltas++];
adamc@682	2877 d->client = client;
adamc@682	2878 buf_reset(&d->msgs);
adamc@682	2879 return d;
adamc@671	2880 }
adamc@671	2881
adamc@668	2882 uw_Basis_channel uw_Basis_new_channel(uw_context ctx, uw_unit u) {
adamc@682	2883 if (ctx->client == NULL)
adamc@682	2884 uw_error(ctx, FATAL, "Attempt to create channel on request not associated with a persistent connection");
adamc@671	2885
adamc@682	2886 return new_channel(ctx->client);
adamc@668	2887 }
adamc@668	2888
adamc@668	2889 uw_unit uw_Basis_send(uw_context ctx, uw_Basis_channel chn, uw_Basis_string msg) {
adamc@682	2890 delta *d = allocate_delta(ctx, chn.cli);
adamc@682	2891 size_t len;
adamc@682	2892 int preLen;
adamc@682	2893 char pre[INTS_MAX + 2];
adamc@668	2894
adamc@682	2895 len = strlen(msg);
adamc@682	2896
adamc@682	2897 sprintf(pre, "%u\n%n", chn.chn, &preLen);
adamc@682	2898
adamc@1113	2899 ctx_buf_append(ctx, "messages", &d->msgs, pre, preLen);
adamc@1113	2900 ctx_buf_append(ctx, "messages", &d->msgs, msg, len);
adamc@1113	2901 ctx_buf_append(ctx, "messages", &d->msgs, "\n", 1);
adamc@671	2902
adamc@671	2903 return uw_unit_v;
adamc@668	2904 }
adamc@671	2905
adam@1327	2906 int uw_rollback(uw_context ctx, int will_retry) {
adamc@1131	2907 int i;
adamc@1131	2908 cleanup *cl;
adamc@1131	2909
adamc@1131	2910 if (ctx->client)
adamc@1131	2911 release_client(ctx->client);
adamc@1131	2912
adamc@1131	2913 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adamc@1131	2914 cl->func(cl->arg);
adamc@1131	2915
adamc@1131	2916 ctx->cleanup_front = ctx->cleanup;
adamc@1131	2917
adamc@1131	2918 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@1131	2919 if (ctx->transactionals[i].rollback != NULL)
adamc@1131	2920 ctx->transactionals[i].rollback(ctx->transactionals[i].data);
adamc@1131	2921
adamc@1131	2922 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@1131	2923 if (ctx->transactionals[i].free)
adam@1327	2924 ctx->transactionals[i].free(ctx->transactionals[i].data, will_retry);
adamc@1131	2925
adamc@1144	2926 return ctx->app ? ctx->app->db_rollback(ctx) : 0;
adamc@1131	2927 }
adamc@1131	2928
adamc@671	2929 void uw_commit(uw_context ctx) {
adamc@1104	2930 int i;
adamc@1104	2931
adamc@1131	2932 if (uw_has_error(ctx)) {
adam@1327	2933 uw_rollback(ctx, 0);
adamc@1131	2934 return;
adamc@1131	2935 }
adamc@1131	2936
adamc@1104	2937 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@771	2938 if (ctx->transactionals[i].rollback != NULL)
adamc@1131	2939 if (ctx->transactionals[i].commit) {
adamc@1083	2940 ctx->transactionals[i].commit(ctx->transactionals[i].data);
adamc@1131	2941 if (uw_has_error(ctx)) {
adam@1327	2942 uw_rollback(ctx, 0);
adamc@1131	2943 return;
adamc@1131	2944 }
adamc@1131	2945 }
adamc@771	2946
adamc@1104	2947 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@771	2948 if (ctx->transactionals[i].rollback == NULL)
adamc@1131	2949 if (ctx->transactionals[i].commit) {
adamc@1083	2950 ctx->transactionals[i].commit(ctx->transactionals[i].data);
adamc@1131	2951 if (uw_has_error(ctx)) {
adam@1327	2952 uw_rollback(ctx, 0);
adamc@1131	2953 return;
adamc@1131	2954 }
adamc@1131	2955 }
adamc@1131	2956
adamc@1131	2957 if (ctx->app->db_commit(ctx)) {
adamc@1131	2958 uw_set_error_message(ctx, "Error running SQL COMMIT");
adamc@1131	2959 return;
adamc@1131	2960 }
adamc@682	2961
adamc@682	2962 for (i = 0; i < ctx->used_deltas; ++i) {
adamc@682	2963 delta *d = &ctx->deltas[i];
adamc@682	2964 client *c = find_client(d->client);
adamc@682	2965
adamc@682	2966 assert (c != NULL && c->mode == USED);
adamc@682	2967
adamc@685	2968 client_send(c, &d->msgs);
adamc@682	2969 }
adamc@682	2970
adamc@682	2971 if (ctx->client)
adamc@685	2972 release_client(ctx->client);
adamc@771	2973
adamc@1104	2974 for (i = ctx->used_transactionals-1; i >= 0; --i)
adamc@1083	2975 if (ctx->transactionals[i].free)
adam@1327	2976 ctx->transactionals[i].free(ctx->transactionals[i].data, 0);
adamc@916	2977
adamc@916	2978 // Splice script data into appropriate part of page
adamc@1065	2979 if (ctx->returning_indirectly \|\| ctx->script_header[0] == 0) {
adamc@995	2980 char *start = strstr(ctx->page.start, "<sc>");
adamc@995	2981 if (start) {
adamc@995	2982 memmove(start, start + 4, buf_used(&ctx->page) - (start - ctx->page.start) - 4);
adamc@995	2983 ctx->page.front -= 4;
adamc@995	2984 }
adamc@995	2985 } else if (buf_used(&ctx->script) == 0) {
adamc@916	2986 size_t len = strlen(ctx->script_header);
adamc@916	2987 char *start = strstr(ctx->page.start, "<sc>");
adamc@916	2988 if (start) {
adamc@1113	2989 ctx_buf_check(ctx, "page", &ctx->page, buf_used(&ctx->page) - 4 + len);
adamc@917	2990 start = strstr(ctx->page.start, "<sc>");
adamc@916	2991 memmove(start + len, start + 4, buf_used(&ctx->page) - (start - ctx->page.start) - 3);
adamc@916	2992 ctx->page.front += len - 4;
adamc@916	2993 memcpy(start, ctx->script_header, len);
adamc@916	2994 }
adamc@916	2995 } else {
adamc@916	2996 size_t lenH = strlen(ctx->script_header), len = buf_used(&ctx->script);
adamc@916	2997 size_t lenP = lenH + 40 + len;
adamc@916	2998 char *start = strstr(ctx->page.start, "<sc>");
adamc@916	2999 if (start) {
adamc@1113	3000 ctx_buf_check(ctx, "page", &ctx->page, buf_used(&ctx->page) - 4 + lenP);
adamc@917	3001 start = strstr(ctx->page.start, "<sc>");
adamc@916	3002 memmove(start + lenP, start + 4, buf_used(&ctx->page) - (start - ctx->page.start) - 3);
adamc@916	3003 ctx->page.front += lenP - 4;
adamc@916	3004 memcpy(start, ctx->script_header, lenH);
adamc@916	3005 memcpy(start + lenH, "<script type=\"text/javascript\">", 31);
adamc@916	3006 memcpy(start + lenH + 31, ctx->script.start, len);
adamc@916	3007 memcpy(start + lenH + 31 + len, "</script>", 9);
adamc@916	3008 }
adamc@916	3009 }
adamc@671	3010 }
adamc@671	3011
adamc@683	3012
adamc@1113	3013 size_t uw_transactionals_max = SIZE_MAX;
adamc@1113	3014
adamc@771	3015 void uw_register_transactional(uw_context ctx, void *data, uw_callback commit, uw_callback rollback,
adam@1327	3016 uw_callback_with_retry free) {
adamc@771	3017 if (ctx->used_transactionals >= ctx->n_transactionals) {
adamc@1113	3018 if (ctx->used_transactionals+1 > uw_transactionals_max)
adamc@1113	3019 uw_error(ctx, FATAL, "Exceeded limit on number of transactionals");
adamc@1084	3020 ctx->transactionals = realloc(ctx->transactionals, sizeof(transactional) * (ctx->used_transactionals+1));
adamc@771	3021 ++ctx->n_transactionals;
adamc@771	3022 }
adamc@771	3023
adamc@771	3024 ctx->transactionals[ctx->used_transactionals].data = data;
adamc@771	3025 ctx->transactionals[ctx->used_transactionals].commit = commit;
adamc@771	3026 ctx->transactionals[ctx->used_transactionals].rollback = rollback;
adamc@771	3027 ctx->transactionals[ctx->used_transactionals++].free = free;
adamc@771	3028 }
adamc@771	3029
adamc@683	3030
adamc@683	3031 // "Garbage collection"
adamc@683	3032
adamc@1121	3033 void uw_do_expunge(uw_context ctx, uw_Basis_client cli, void *data);
adamc@1121	3034 void uw_post_expunge(uw_context ctx, void *data);
adamc@1121	3035
adamc@1121	3036 static failure_kind uw_expunge(uw_context ctx, uw_Basis_client cli, void *data) {
adamc@683	3037 int r = setjmp(ctx->jmp_buf);
adamc@683	3038
adamc@1121	3039 if (r == 0)
adamc@1121	3040 uw_do_expunge(ctx, cli, data);
adamc@1121	3041 else
adamc@1121	3042 ctx->app->db_rollback(ctx);
adamc@1121	3043
adamc@1121	3044 uw_post_expunge(ctx, data);
adamc@683	3045
adamc@683	3046 return r;
adamc@683	3047 }
adamc@683	3048
adamc@683	3049 void uw_prune_clients(uw_context ctx) {
adamc@683	3050 client c, next, *prev = NULL;
adamc@683	3051 time_t cutoff;
adamc@683	3052
adamc@1094	3053 cutoff = time(NULL) - ctx->app->timeout;
adamc@683	3054
adamc@683	3055 pthread_mutex_lock(&clients_mutex);
adamc@683	3056
adamc@683	3057 for (c = clients_used; c; c = next) {
adamc@683	3058 next = c->next;
adamc@683	3059 pthread_mutex_lock(&c->lock);
adamc@685	3060 if (c->last_contact < cutoff && c->refcount == 0) {
adamc@683	3061 failure_kind fk = UNLIMITED_RETRY;
adamc@683	3062 if (prev)
adamc@683	3063 prev->next = next;
adamc@683	3064 else
adamc@683	3065 clients_used = next;
adamc@684	3066 uw_reset(ctx);
adamc@683	3067 while (fk == UNLIMITED_RETRY) {
adamc@1121	3068 fk = uw_expunge(ctx, c->id, c->data);
adamc@1121	3069 if (fk == UNLIMITED_RETRY)
adamc@684	3070 printf("Unlimited retry during expunge: %s\n", uw_error_message(ctx));
adamc@683	3071 }
adamc@684	3072 if (fk == SUCCESS)
adamc@684	3073 free_client(c);
adamc@1121	3074 else
adamc@856	3075 fprintf(stderr, "Expunge blocked by error: %s\n", uw_error_message(ctx));
adamc@683	3076 }
adamc@683	3077 else
adamc@683	3078 prev = c;
adamc@683	3079 pthread_mutex_unlock(&c->lock);
adamc@683	3080 }
adamc@683	3081
adamc@683	3082 pthread_mutex_unlock(&clients_mutex);
adamc@683	3083 }
adamc@687	3084
adamc@687	3085 failure_kind uw_initialize(uw_context ctx) {
adamc@687	3086 int r = setjmp(ctx->jmp_buf);
adamc@687	3087
adamc@687	3088 if (r == 0) {
adamc@1094	3089 if (ctx->app->db_begin(ctx))
adamc@687	3090 uw_error(ctx, FATAL, "Error running SQL BEGIN");
adamc@1094	3091 ctx->app->initializer(ctx);
adamc@1094	3092 if (ctx->app->db_commit(ctx))
adamc@687	3093 uw_error(ctx, FATAL, "Error running SQL COMMIT");
adamc@687	3094 }
adamc@687	3095
adamc@687	3096 return r;
adamc@687	3097 }
adamc@717	3098
adamc@1065	3099 static int url_bad(uw_Basis_string s) {
adamc@1065	3100 for (; *s; ++s)
adamc@1153	3101 if (!isgraph((int)*s))
adamc@1065	3102 return 1;
adamc@1065	3103
adamc@1065	3104 return 0;
adamc@1065	3105 }
adamc@1065	3106
adamc@717	3107 uw_Basis_string uw_Basis_bless(uw_context ctx, uw_Basis_string s) {
adamc@1065	3108 if (url_bad(s))
adamc@1065	3109 uw_error(ctx, FATAL, "Invalid URL %s", uw_Basis_htmlifyString(ctx, s));
adamc@1094	3110 if (ctx->app->check_url(s))
adamc@770	3111 return s;
adamc@770	3112 else
adamc@770	3113 uw_error(ctx, FATAL, "Disallowed URL %s", uw_Basis_htmlifyString(ctx, s));
adamc@717	3114 }
adamc@734	3115
adamc@770	3116 uw_Basis_string uw_Basis_checkUrl(uw_context ctx, uw_Basis_string s) {
adamc@1065	3117 if (url_bad(s))
adamc@1065	3118 return NULL;
adamc@1094	3119 if (ctx->app->check_url(s))
adamc@770	3120 return s;
adamc@770	3121 else
adamc@770	3122 return NULL;
adamc@770	3123 }
adamc@770	3124
adamc@770	3125 int mime_format(const char *s) {
adamc@770	3126 for (; *s; ++s)
adamc@1153	3127 if (!isalnum((int)s) && s != '/' && s != '-' && s != '.')
adamc@770	3128 return 0;
adamc@770	3129
adamc@770	3130 return 1;
adamc@770	3131 }
adamc@770	3132
adamc@741	3133 uw_Basis_string uw_Basis_blessMime(uw_context ctx, uw_Basis_string s) {
adamc@770	3134 if (!mime_format(s))
adamc@770	3135 uw_error(ctx, FATAL, "MIME type \"%s\" contains invalid character", uw_Basis_htmlifyString(ctx, s));
adamc@770	3136
adamc@1094	3137 if (ctx->app->check_mime(s))
adamc@770	3138 return s;
adamc@770	3139 else
adamc@770	3140 uw_error(ctx, FATAL, "Disallowed MIME type %s", uw_Basis_htmlifyString(ctx, s));
adamc@770	3141 }
adamc@770	3142
adamc@770	3143 uw_Basis_string uw_Basis_checkMime(uw_context ctx, uw_Basis_string s) {
adamc@770	3144 if (!mime_format(s))
adamc@770	3145 return NULL;
adamc@770	3146
adamc@1094	3147 if (ctx->app->check_mime(s))
adamc@770	3148 return s;
adamc@770	3149 else
adamc@770	3150 return NULL;
adamc@741	3151 }
adamc@741	3152
adamc@734	3153 uw_Basis_string uw_unnull(uw_Basis_string s) {
adamc@734	3154 return s ? s : "";
adamc@734	3155 }
adamc@734	3156
adamc@734	3157 extern int uw_hash_blocksize;
adamc@734	3158
adamc@734	3159 uw_Basis_string uw_Basis_makeSigString(uw_context ctx, uw_Basis_string sig) {
adamc@734	3160 uw_Basis_string r = uw_malloc(ctx, 2 * uw_hash_blocksize + 1);
adamc@734	3161 int i;
adamc@734	3162
adamc@734	3163 for (i = 0; i < uw_hash_blocksize; ++i)
adamc@734	3164 sprintf(&r[2i], "%.02X", ((unsigned char )sig)[i]);
adamc@734	3165
adamc@734	3166 return r;
adamc@734	3167 }
adamc@734	3168
adamc@734	3169 uw_Basis_string uw_Basis_sigString(uw_context ctx, uw_unit u) {
adamc@1094	3170 return ctx->app->cookie_sig(ctx);
adamc@734	3171 }
adamc@737	3172
adamc@737	3173 uw_Basis_string uw_Basis_fileName(uw_context ctx, uw_Basis_file f) {
adamc@737	3174 return f.name;
adamc@737	3175 }
adamc@737	3176
adamc@740	3177 uw_Basis_string uw_Basis_fileMimeType(uw_context ctx, uw_Basis_file f) {
adamc@740	3178 return f.type;
adamc@740	3179 }
adamc@740	3180
adamc@745	3181 uw_Basis_int uw_Basis_blobSize(uw_context ctx, uw_Basis_blob b) {
adamc@745	3182 return b.size;
adamc@745	3183 }
adamc@745	3184
adamc@1119	3185 uw_Basis_blob uw_Basis_textBlob(uw_context ctx, uw_Basis_string s) {
adamc@1119	3186 uw_Basis_blob b = {strlen(s), s};
adamc@1119	3187
adamc@1119	3188 return b;
adamc@1119	3189 }
adamc@1119	3190
adamc@737	3191 uw_Basis_blob uw_Basis_fileData(uw_context ctx, uw_Basis_file f) {
adamc@737	3192 return f.data;
adamc@737	3193 }
adamc@741	3194
adamc@741	3195 __attribute__((noreturn)) void uw_return_blob(uw_context ctx, uw_Basis_blob b, uw_Basis_string mimeType) {
adamc@741	3196 cleanup *cl;
adamc@741	3197 int len;
adamc@741	3198
adamc@1065	3199 ctx->returning_indirectly = 1;
adamc@741	3200 buf_reset(&ctx->outHeaders);
adamc@741	3201 buf_reset(&ctx->page);
adamc@741	3202
adamc@856	3203 uw_write_header(ctx, on_success);
adamc@856	3204 uw_write_header(ctx, "Content-Type: ");
adamc@741	3205 uw_write_header(ctx, mimeType);
adamc@741	3206 uw_write_header(ctx, "\r\nContent-Length: ");
adamc@1113	3207 ctx_buf_check(ctx, "headers", &ctx->outHeaders, INTS_MAX);
adamc@1134	3208 sprintf(ctx->outHeaders.front, "%lu%n", (unsigned long)b.size, &len);
adamc@741	3209 ctx->outHeaders.front += len;
adamc@1066	3210 uw_write_header(ctx, "\r\n");
adamc@741	3211
adamc@1113	3212 ctx_buf_append(ctx, "page", &ctx->page, b.data, b.size);
adamc@741	3213
adamc@741	3214 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adamc@741	3215 cl->func(cl->arg);
adamc@741	3216
adamc@741	3217 ctx->cleanup_front = ctx->cleanup;
adamc@741	3218
adamc@1065	3219 longjmp(ctx->jmp_buf, RETURN_INDIRECTLY);
adamc@1065	3220 }
adamc@1065	3221
adamc@1065	3222 __attribute__((noreturn)) void uw_redirect(uw_context ctx, uw_Basis_string url) {
adamc@1065	3223 cleanup *cl;
adamc@1066	3224 char *s;
adamc@1065	3225
adamc@1065	3226 ctx->returning_indirectly = 1;
adamc@1066	3227 buf_reset(&ctx->page);
adamc@1113	3228 ctx_buf_check(ctx, "page", &ctx->page, buf_used(&ctx->outHeaders)+1);
adamc@1066	3229 memcpy(ctx->page.start, ctx->outHeaders.start, buf_used(&ctx->outHeaders));
adamc@1066	3230 ctx->page.start[buf_used(&ctx->outHeaders)] = 0;
adamc@1065	3231 buf_reset(&ctx->outHeaders);
adamc@1065	3232
adamc@1065	3233 uw_write_header(ctx, on_redirect);
adamc@1066	3234
adamc@1066	3235 s = strchr(ctx->page.start, '\n');
adamc@1066	3236 if (s) {
adamc@1066	3237 char *s2;
adamc@1134	3238 for (++s; (s2 = strchr(s, '\n')); s = s2+1) {
adamc@1066	3239 *s2 = 0;
adamc@1066	3240 if (!strncmp(s, "Set-Cookie: ", 12)) {
adamc@1066	3241 uw_write_header(ctx, s);
adamc@1066	3242 uw_write_header(ctx, "\n");
adamc@1066	3243 }
adamc@1066	3244 }
adamc@1066	3245 }
adamc@1066	3246
adamc@1065	3247 uw_write_header(ctx, "Location: ");
adamc@1065	3248 uw_write_header(ctx, url);
adamc@1065	3249 uw_write_header(ctx, "\r\n\r\n");
adamc@1065	3250
adamc@1065	3251 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adamc@1065	3252 cl->func(cl->arg);
adamc@1065	3253
adamc@1065	3254 ctx->cleanup_front = ctx->cleanup;
adamc@1065	3255
adamc@1065	3256 longjmp(ctx->jmp_buf, RETURN_INDIRECTLY);
adamc@741	3257 }
adamc@874	3258
adamc@874	3259 uw_Basis_string uw_Basis_unAs(uw_context ctx, uw_Basis_string s) {
adamc@874	3260 uw_Basis_string r = uw_malloc(ctx, strlen(s) + 1);
adamc@874	3261
adamc@874	3262 for (; *s; ++s) {
adamc@874	3263 if (s[0] == '\'') {
adamc@874	3264 *r++ = '\'';
adamc@874	3265 for (++s; *s; ++s) {
adamc@874	3266 if (s[0] == '\'') {
adamc@874	3267 *r++ = '\'';
adamc@874	3268 break;
adamc@874	3269 } else if (s[0] == '\\') {
adamc@874	3270 if (s[1] == '\\') {
adamc@874	3271 *r++ = '\\';
adamc@874	3272 *r++ = '\\';
adamc@874	3273 ++s;
adamc@874	3274 } else if (s[1] == '\'') {
adamc@874	3275 *r++ = '\\';
adamc@874	3276 *r++ = '\'';
adamc@874	3277 ++s;
adamc@874	3278 } else
adamc@874	3279 *r++ = '\'';
adamc@874	3280 } else
adamc@874	3281 *r++ = s[0];
adamc@874	3282 }
adamc@874	3283 if (*s == 0) break;
adamc@874	3284 } else if (s[0] == 'T' && s[1] == '.')
adamc@874	3285 ++s;
adamc@874	3286 else
adamc@874	3287 *r++ = s[0];
adamc@874	3288 }
adamc@874	3289
adamc@874	3290 return r;
adamc@874	3291 }
adamc@874	3292
adamc@922	3293 uw_Basis_string uw_Basis_mstrcat(uw_context ctx, ...) {
adamc@922	3294 va_list ap;
adamc@922	3295 size_t len = 1;
adamc@922	3296 char s, r, *s2;
adamc@922	3297
adamc@922	3298 va_start(ap, ctx);
adamc@922	3299 for (s = va_arg(ap, char); s; s = va_arg(ap, char))
adamc@922	3300 len += strlen(s);
adamc@922	3301 va_end(ap);
adamc@922	3302
adamc@922	3303 r = uw_malloc(ctx, len);
adamc@922	3304 va_start(ap, ctx);
adamc@922	3305 for (s2 = r, s = va_arg(ap, char); s; s = va_arg(ap, char))
adamc@922	3306 while (*s)
adamc@922	3307 s2++ = s++;
adamc@922	3308 va_end(ap);
adamc@922	3309 *s2 = 0;
adamc@922	3310
adamc@922	3311 return r;
adamc@922	3312 }
adamc@1006	3313
adamc@1050	3314 const uw_Basis_time minTime = 0;
adamc@1050	3315
adamc@1006	3316 uw_Basis_time uw_Basis_now(uw_context ctx) {
adamc@1006	3317 return time(NULL);
adamc@1006	3318 }
adamc@1061	3319
adamc@1138	3320 uw_Basis_time uw_Basis_minusSeconds(uw_context ctx, uw_Basis_time tm, uw_Basis_int n) {
adamc@1138	3321 return tm - n;
adamc@1138	3322 }
adamc@1138	3323
adamc@1061	3324 void uw_get_global(uw_context ctx, char name) {
adamc@1061	3325 int i;
adamc@1061	3326
adamc@1061	3327 for (i = 0; i < ctx->n_globals; ++i)
adamc@1061	3328 if (!strcmp(name, ctx->globals[i].name))
adamc@1061	3329 return ctx->globals[i].data;
adamc@1061	3330
adamc@1061	3331 return NULL;
adamc@1061	3332 }
adamc@1061	3333
adamc@1113	3334 size_t uw_globals_max = SIZE_MAX;
adamc@1113	3335
adamc@1061	3336 void uw_set_global(uw_context ctx, char name, void data, void (free)(void)) {
adamc@1061	3337 int i;
adamc@1061	3338
adamc@1061	3339 for (i = 0; i < ctx->n_globals; ++i)
adamc@1061	3340 if (!strcmp(name, ctx->globals[i].name)) {
adamc@1089	3341 if (ctx->globals[i].free)
adamc@1061	3342 ctx->globals[i].free(ctx->globals[i].data);
adamc@1061	3343 ctx->globals[i].data = data;
adamc@1061	3344 ctx->globals[i].free = free;
adamc@1061	3345 return;
adamc@1061	3346 }
adamc@1089	3347
adamc@1113	3348 if (ctx->n_globals+1 > uw_globals_max)
adamc@1113	3349 uw_error(ctx, FATAL, "Exceeded limit on number of globals");
adamc@1113	3350
adamc@1061	3351 ++ctx->n_globals;
adamc@1061	3352 ctx->globals = realloc(ctx->globals, ctx->n_globals * sizeof(global));
adamc@1061	3353 ctx->globals[ctx->n_globals-1].name = name;
adamc@1061	3354 ctx->globals[ctx->n_globals-1].data = data;
adamc@1061	3355 ctx->globals[ctx->n_globals-1].free = free;
adamc@1061	3356 }
adamc@1061	3357
adamc@1061	3358 uw_Basis_bool uw_Basis_isalnum(uw_context ctx, uw_Basis_char c) {
adamc@1153	3359 return !!isalnum((int)c);
adamc@1061	3360 }
adamc@1061	3361
adamc@1061	3362 uw_Basis_bool uw_Basis_isalpha(uw_context ctx, uw_Basis_char c) {
adamc@1153	3363 return !!isalpha((int)c);
adamc@1061	3364 }
adamc@1061	3365
adamc@1061	3366 uw_Basis_bool uw_Basis_isblank(uw_context ctx, uw_Basis_char c) {
adamc@1153	3367 return !!isblank((int)c);
adamc@1061	3368 }
adamc@1061	3369
adamc@1061	3370 uw_Basis_bool uw_Basis_iscntrl(uw_context ctx, uw_Basis_char c) {
adamc@1153	3371 return !!iscntrl((int)c);
adamc@1061	3372 }
adamc@1061	3373
adamc@1061	3374 uw_Basis_bool uw_Basis_isdigit(uw_context ctx, uw_Basis_char c) {
adamc@1153	3375 return !!isdigit((int)c);
adamc@1061	3376 }
adamc@1061	3377
adamc@1061	3378 uw_Basis_bool uw_Basis_isgraph(uw_context ctx, uw_Basis_char c) {
adamc@1153	3379 return !!isgraph((int)c);
adamc@1061	3380 }
adamc@1061	3381
adamc@1061	3382 uw_Basis_bool uw_Basis_islower(uw_context ctx, uw_Basis_char c) {
adamc@1153	3383 return !!islower((int)c);
adamc@1061	3384 }
adamc@1061	3385
adamc@1061	3386 uw_Basis_bool uw_Basis_isprint(uw_context ctx, uw_Basis_char c) {
adamc@1153	3387 return !!isprint((int)c);
adamc@1061	3388 }
adamc@1061	3389
adamc@1061	3390 uw_Basis_bool uw_Basis_ispunct(uw_context ctx, uw_Basis_char c) {
adamc@1153	3391 return !!ispunct((int)c);
adamc@1061	3392 }
adamc@1061	3393
adamc@1061	3394 uw_Basis_bool uw_Basis_isspace(uw_context ctx, uw_Basis_char c) {
adamc@1153	3395 return !!isspace((int)c);
adamc@1061	3396 }
adamc@1063	3397
adamc@1061	3398 uw_Basis_bool uw_Basis_isupper(uw_context ctx, uw_Basis_char c) {
adamc@1153	3399 return !!isupper((int)c);
adamc@1061	3400 }
adamc@1061	3401
adamc@1061	3402 uw_Basis_bool uw_Basis_isxdigit(uw_context ctx, uw_Basis_char c) {
adamc@1153	3403 return !!isxdigit((int)c);
adamc@1061	3404 }
adamc@1061	3405
adamc@1061	3406 uw_Basis_char uw_Basis_tolower(uw_context ctx, uw_Basis_char c) {
adamc@1153	3407 return tolower((int)c);
adamc@1061	3408 }
adamc@1061	3409
adamc@1061	3410 uw_Basis_char uw_Basis_toupper(uw_context ctx, uw_Basis_char c) {
adamc@1153	3411 return toupper((int)c);
adamc@1061	3412 }
adamc@1066	3413
adamc@1128	3414 uw_Basis_int uw_Basis_ord(uw_context ctx, uw_Basis_char c) {
adamc@1128	3415 return (unsigned char)c;
adamc@1128	3416 }
adamc@1128	3417
adamc@1128	3418 uw_Basis_char uw_Basis_chr(uw_context ctx, uw_Basis_int n) {
adamc@1128	3419 return n;
adamc@1128	3420 }
adamc@1128	3421
adamc@1066	3422 uw_Basis_string uw_Basis_currentUrl(uw_context ctx) {
adamc@1066	3423 return ctx->current_url;
adamc@1066	3424 }
adamc@1066	3425
adamc@1066	3426 void uw_set_currentUrl(uw_context ctx, char *s) {
adamc@1066	3427 ctx->current_url = s;
adamc@1066	3428 }
adamc@1114	3429
adamc@1114	3430 void uw_set_deadline(uw_context ctx, int n) {
adamc@1114	3431 ctx->deadline = n;
adamc@1114	3432 }
adamc@1114	3433
adamc@1114	3434 void uw_check_deadline(uw_context ctx) {
adamc@1114	3435 if (uw_time > ctx->deadline)
adamc@1114	3436 uw_error(ctx, FATAL, "Maximum running time exceeded");
adamc@1114	3437 }
adamc@1115	3438
adamc@1115	3439 size_t uw_database_max = SIZE_MAX;
adamc@1120	3440
adamc@1120	3441 uw_Basis_unit uw_Basis_debug(uw_context ctx, uw_Basis_string s) {
adamc@1120	3442 fprintf(stderr, "%s\n", s);
adamc@1120	3443
adamc@1120	3444 return uw_unit_v;
adamc@1120	3445 }
adamc@1250	3446
adamc@1250	3447 uw_Basis_int uw_Basis_rand(uw_context ctx) {
adamc@1250	3448 uw_Basis_int n = abs(rand());
adamc@1250	3449 return n;
adamc@1250	3450 }

Mercurial > urweb

annotate src/c/urweb.c @ 1329:9be9da2df74b