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

annotate src/c/urweb.c @ 1125:e06bfeb6c2aa

Supporting any number of arguments for explicitly exported functions

author	Adam Chlipala <adamc@hcoop.net>
date	Tue, 12 Jan 2010 10:33:03 -0500
parents	0cee0c8d8c37
children	e1cf925e2074

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

Mercurial > urweb

annotate src/c/urweb.c @ 1125:e06bfeb6c2aa