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

annotate src/c/urweb.c @ 1131:94e83c5533d2

Handling errors during commit

author	Adam Chlipala <adamc@hcoop.net>
date	Tue, 26 Jan 2010 14:59:19 -0500
parents	e1cf925e2074
children	b08b73591d2c

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

Mercurial > urweb

annotate src/c/urweb.c @ 1131:94e83c5533d2