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

annotate src/c/urweb.c @ 1307:d2ad997ca157

Interface for setting memory limits

author	Adam Chlipala <adam@chlipala.net>
date	Thu, 14 Oct 2010 11:06:26 -0400
parents	929981850d9d
children	714e8b84221b

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

Mercurial > urweb

annotate src/c/urweb.c @ 1307:d2ad997ca157