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

annotate src/c/urweb.c @ 840:e4a02e4fa35c

Fix unbound name problem in Jscomp injectors; more List stuff

author	Adam Chlipala <adamc@hcoop.net>
date	Sat, 06 Jun 2009 15:29:34 -0400
parents	249740301a0a
children	74a1e3bdf430

rev	line source
adamc@741	1 #define _XOPEN_SOURCE 500
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@102	12
adamc@667	13 #include <pthread.h>
adamc@667	14
adamc@102	15 #include "types.h"
adamc@102	16
adamc@311	17 uw_unit uw_unit_v = {};
adamc@102	18
adamc@667	19
adamc@667	20 // Socket extras
adamc@667	21
adamc@667	22 int uw_really_send(int sock, const void *buf, size_t len) {
adamc@667	23 while (len > 0) {
adamc@667	24 size_t n = send(sock, buf, len, 0);
adamc@667	25
adamc@667	26 if (n < 0)
adamc@667	27 return n;
adamc@667	28
adamc@667	29 buf += n;
adamc@667	30 len -= n;
adamc@667	31 }
adamc@667	32
adamc@667	33 return 0;
adamc@667	34 }
adamc@667	35
adamc@667	36
adamc@667	37 // Buffers
adamc@667	38
adamc@667	39 typedef struct {
adamc@667	40 char start, front, *back;
adamc@667	41 } buf;
adamc@667	42
adamc@667	43 static void buf_init(buf *b, size_t s) {
adamc@667	44 b->front = b->start = malloc(s);
adamc@667	45 b->back = b->front + s;
adamc@667	46 }
adamc@667	47
adamc@667	48 static void buf_free(buf *b) {
adamc@667	49 free(b->start);
adamc@667	50 }
adamc@667	51
adamc@667	52 static void buf_reset(buf *b) {
adamc@667	53 b->front = b->start;
adamc@667	54 }
adamc@667	55
adamc@667	56 static void buf_check(buf *b, size_t extra) {
adamc@667	57 if (b->back - b->front < extra) {
adamc@667	58 size_t desired = b->front - b->start + extra, next;
adamc@667	59 char *new_heap;
adamc@667	60
adamc@667	61 next = b->back - b->start;
adamc@667	62 if (next == 0)
adamc@667	63 next = 1;
adamc@667	64 for (; next < desired; next *= 2);
adamc@667	65
adamc@667	66 new_heap = realloc(b->start, next);
adamc@667	67 b->front = new_heap + (b->front - b->start);
adamc@667	68 b->back = new_heap + next;
adamc@667	69 b->start = new_heap;
adamc@667	70 }
adamc@667	71 }
adamc@667	72
adamc@667	73 static size_t buf_used(buf *b) {
adamc@667	74 return b->front - b->start;
adamc@667	75 }
adamc@667	76
adamc@667	77 static size_t buf_avail(buf *b) {
adamc@667	78 return b->back - b->start;
adamc@667	79 }
adamc@667	80
adamc@668	81 static void buf_append(buf b, const char s, size_t len) {
adamc@672	82 buf_check(b, len+1);
adamc@668	83 memcpy(b->front, s, len);
adamc@668	84 b->front += len;
adamc@672	85 *b->front = 0;
adamc@668	86 }
adamc@667	87
adamc@668	88
adamc@672	89 // Persistent state types
adamc@667	90
adamc@667	91 typedef enum { UNUSED, USED } usage;
adamc@667	92
adamc@667	93 typedef struct client {
adamc@682	94 unsigned id;
adamc@667	95 usage mode;
adamc@682	96 int pass;
adamc@682	97 struct client *next;
adamc@689	98 pthread_mutex_t lock, pull_lock;
adamc@682	99 buf msgs;
adamc@682	100 int sock;
adamc@682	101 time_t last_contact;
adamc@682	102 unsigned n_channels;
adamc@685	103 unsigned refcount;
adamc@667	104 } client;
adamc@667	105
adamc@672	106
adamc@672	107 // Persistent client state
adamc@672	108
adamc@682	109 static client *clients, clients_free, *clients_used;
adamc@682	110 static unsigned n_clients;
adamc@667	111
adamc@667	112 static pthread_mutex_t clients_mutex = PTHREAD_MUTEX_INITIALIZER;
adamc@667	113
adamc@682	114 static client *new_client() {
adamc@667	115 client *c;
adamc@667	116
adamc@667	117 pthread_mutex_lock(&clients_mutex);
adamc@667	118
adamc@667	119 if (clients_free) {
adamc@667	120 c = clients_free;
adamc@682	121 clients_free = clients_free->next;
adamc@667	122 }
adamc@667	123 else {
adamc@667	124 ++n_clients;
adamc@667	125 clients = realloc(clients, sizeof(client) * n_clients);
adamc@667	126 c = malloc(sizeof(client));
adamc@667	127 c->id = n_clients-1;
adamc@682	128 pthread_mutex_init(&c->lock, NULL);
adamc@689	129 pthread_mutex_init(&c->pull_lock, NULL);
adamc@682	130 buf_init(&c->msgs, 0);
adamc@667	131 clients[n_clients-1] = c;
adamc@667	132 }
adamc@667	133
adamc@682	134 pthread_mutex_lock(&c->lock);
adamc@667	135 c->mode = USED;
adamc@682	136 c->pass = rand();
adamc@682	137 c->sock = -1;
adamc@682	138 c->last_contact = time(NULL);
adamc@682	139 buf_reset(&c->msgs);
adamc@682	140 c->n_channels = 0;
adamc@685	141 c->refcount = 0;
adamc@682	142 pthread_mutex_unlock(&c->lock);
adamc@682	143
adamc@682	144 c->next = clients_used;
adamc@682	145 clients_used = c;
adamc@667	146
adamc@667	147 pthread_mutex_unlock(&clients_mutex);
adamc@667	148
adamc@667	149 return c;
adamc@667	150 }
adamc@667	151
adamc@685	152 static void use_client(client *c) {
adamc@685	153 pthread_mutex_lock(&c->lock);
adamc@685	154 ++c->refcount;
adamc@685	155 pthread_mutex_unlock(&c->lock);
adamc@689	156 pthread_mutex_lock(&c->pull_lock);
adamc@685	157 }
adamc@685	158
adamc@685	159 static void release_client(client *c) {
adamc@689	160 pthread_mutex_unlock(&c->pull_lock);
adamc@685	161 pthread_mutex_lock(&c->lock);
adamc@685	162 --c->refcount;
adamc@685	163 pthread_mutex_unlock(&c->lock);
adamc@689	164
adamc@685	165 }
adamc@685	166
adamc@667	167 static const char begin_msgs[] = "HTTP/1.1 200 OK\r\nContent-type: text/plain\r\n\r\n";
adamc@667	168
adamc@682	169 static client *find_client(unsigned id) {
adamc@667	170 client *c;
adamc@667	171
adamc@667	172 pthread_mutex_lock(&clients_mutex);
adamc@667	173
adamc@667	174 if (id >= n_clients) {
adamc@667	175 pthread_mutex_unlock(&clients_mutex);
adamc@668	176 return NULL;
adamc@667	177 }
adamc@667	178
adamc@667	179 c = clients[id];
adamc@667	180
adamc@668	181 pthread_mutex_unlock(&clients_mutex);
adamc@668	182 return c;
adamc@668	183 }
adamc@668	184
adamc@682	185 void uw_client_connect(unsigned id, int pass, int sock) {
adamc@682	186 client *c = find_client(id);
adamc@668	187
adamc@668	188 if (c == NULL) {
adamc@667	189 close(sock);
adamc@682	190 fprintf(stderr, "Out-of-bounds client request (%u)\n", id);
adamc@667	191 return;
adamc@667	192 }
adamc@667	193
adamc@682	194 pthread_mutex_lock(&c->lock);
adamc@671	195
adamc@682	196 if (c->mode != USED) {
adamc@682	197 pthread_mutex_unlock(&c->lock);
adamc@667	198 close(sock);
adamc@682	199 fprintf(stderr, "Client request for unused slot (%u)\n", id);
adamc@667	200 return;
adamc@667	201 }
adamc@667	202
adamc@682	203 if (pass != c->pass) {
adamc@682	204 pthread_mutex_unlock(&c->lock);
adamc@682	205 close(sock);
adamc@682	206 fprintf(stderr, "Wrong client password (%u, %d)\n", id, pass);
adamc@682	207 return;
adamc@667	208 }
adamc@667	209
adamc@682	210 if (c->sock != -1) {
adamc@682	211 close(c->sock);
adamc@682	212 c->sock = -1;
adamc@682	213 }
adamc@667	214
adamc@682	215 c->last_contact = time(NULL);
adamc@682	216
adamc@682	217 if (buf_used(&c->msgs) > 0) {
adamc@667	218 uw_really_send(sock, begin_msgs, sizeof(begin_msgs) - 1);
adamc@682	219 uw_really_send(sock, c->msgs.start, buf_used(&c->msgs));
adamc@682	220 buf_reset(&c->msgs);
adamc@667	221 close(sock);
adamc@667	222 }
adamc@668	223 else
adamc@682	224 c->sock = sock;
adamc@667	225
adamc@682	226 pthread_mutex_unlock(&c->lock);
adamc@667	227 }
adamc@667	228
adamc@682	229 static void free_client(client *c) {
adamc@683	230 printf("Freeing client %u\n", c->id);
adamc@667	231
adamc@682	232 c->mode = UNUSED;
adamc@682	233 c->pass = -1;
adamc@667	234
adamc@682	235 c->next = clients_free;
adamc@682	236 clients_free = c;
adamc@667	237 }
adamc@667	238
adamc@682	239 static uw_Basis_channel new_channel(client *c) {
adamc@682	240 uw_Basis_channel ch = {c->id, c->n_channels++};
adamc@668	241 return ch;
adamc@668	242 }
adamc@668	243
adamc@685	244 static void client_send(client c, buf msg) {
adamc@685	245 pthread_mutex_lock(&c->lock);
adamc@671	246
adamc@682	247 if (c->sock != -1) {
adamc@682	248 uw_really_send(c->sock, begin_msgs, sizeof(begin_msgs) - 1);
adamc@682	249 uw_really_send(c->sock, msg->start, buf_used(msg));
adamc@682	250 close(c->sock);
adamc@682	251 c->sock = -1;
adamc@682	252 } else
adamc@682	253 buf_append(&c->msgs, msg->start, buf_used(msg));
adamc@671	254
adamc@685	255 pthread_mutex_unlock(&c->lock);
adamc@668	256 }
adamc@668	257
adamc@668	258
adamc@668	259 // Global entry points
adamc@668	260
adamc@668	261 void uw_global_init() {
adamc@668	262 srand(time(NULL) ^ getpid());
adamc@668	263
adamc@668	264 clients = malloc(0);
adamc@668	265 }
adamc@668	266
adamc@668	267
adamc@667	268 // Single-request state
adamc@667	269
adamc@167	270 #define ERROR_BUF_LEN 1024
adamc@167	271
adamc@323	272 typedef struct regions {
adamc@323	273 struct regions *next;
adamc@323	274 } regions;
adamc@323	275
adamc@425	276 typedef struct {
adamc@425	277 void (func)(void);
adamc@425	278 void *arg;
adamc@425	279 } cleanup;
adamc@425	280
adamc@671	281 typedef struct {
adamc@682	282 unsigned client;
adamc@671	283 buf msgs;
adamc@682	284 } delta;
adamc@671	285
adamc@737	286 typedef enum {
adamc@759	287 UNSET, NORMAL, FIL, SUBFORM, SUBFORMS, ENTRY
adamc@737	288 } input_kind;
adamc@737	289
adamc@756	290 typedef struct input {
adamc@737	291 input_kind kind;
adamc@737	292 union {
adamc@737	293 char *normal;
adamc@739	294 uw_Basis_file file;
adamc@756	295 struct {
adamc@759	296 struct input fields, parent;
adamc@756	297 } subform;
adamc@759	298 struct {
adamc@759	299 struct input entries, parent;
adamc@759	300 } subforms;
adamc@759	301 struct {
adamc@759	302 struct input fields, next, *parent;
adamc@759	303 } entry;
adamc@737	304 } data;
adamc@737	305 } input;
adamc@737	306
adamc@771	307 typedef struct {
adamc@771	308 void *data;
adamc@771	309 uw_callback commit, rollback, free;
adamc@771	310 } transactional;
adamc@771	311
adamc@311	312 struct uw_context {
adamc@458	313 char headers, headers_end;
adamc@457	314
adamc@666	315 buf outHeaders, page, heap, script;
adamc@759	316 input inputs, subinputs, *cur_container;
adamc@756	317 size_t n_subinputs, used_subinputs;
adamc@167	318
adamc@565	319 int source_count;
adamc@562	320
adamc@272	321 void *db;
adamc@272	322
adamc@167	323 jmp_buf jmp_buf;
adamc@167	324
adamc@323	325 regions *regions;
adamc@323	326
adamc@425	327 cleanup cleanup, cleanup_front, *cleanup_back;
adamc@425	328
adamc@667	329 const char script_header, url_prefix;
adamc@643	330
adamc@736	331 int needs_push, needs_sig;
adamc@693	332
adamc@682	333 size_t n_deltas, used_deltas;
adamc@682	334 delta *deltas;
adamc@671	335
adamc@673	336 int timeout;
adamc@673	337
adamc@682	338 client *client;
adamc@682	339
adamc@771	340 transactional *transactionals;
adamc@771	341 size_t n_transactionals, used_transactionals;
adamc@771	342
adamc@167	343 char error_message[ERROR_BUF_LEN];
adamc@117	344 };
adamc@117	345
adamc@683	346 extern int uw_inputs_len, uw_timeout;
adamc@144	347
adamc@687	348 uw_context uw_init() {
adamc@311	349 uw_context ctx = malloc(sizeof(struct uw_context));
adamc@136	350
adamc@458	351 ctx->headers = ctx->headers_end = NULL;
adamc@457	352
adamc@687	353 buf_init(&ctx->outHeaders, 0);
adamc@687	354 buf_init(&ctx->page, 0);
adamc@687	355 buf_init(&ctx->heap, 0);
adamc@698	356 buf_init(&ctx->script, 1);
adamc@667	357 ctx->script.start[0] = 0;
adamc@136	358
adamc@737	359 ctx->inputs = calloc(uw_inputs_len, sizeof(input));
adamc@759	360 ctx->cur_container = NULL;
adamc@756	361 ctx->subinputs = malloc(0);
adamc@756	362 ctx->n_subinputs = ctx->used_subinputs = 0;
adamc@144	363
adamc@272	364 ctx->db = NULL;
adamc@272	365
adamc@323	366 ctx->regions = NULL;
adamc@323	367
adamc@425	368 ctx->cleanup_front = ctx->cleanup_back = ctx->cleanup = malloc(0);
adamc@425	369
adamc@643	370 ctx->script_header = "";
adamc@667	371 ctx->url_prefix = "/";
adamc@693	372 ctx->needs_push = 0;
adamc@736	373 ctx->needs_sig = 0;
adamc@643	374
adamc@167	375 ctx->error_message[0] = 0;
adamc@167	376
adamc@565	377 ctx->source_count = 0;
adamc@562	378
adamc@682	379 ctx->n_deltas = ctx->used_deltas = 0;
adamc@671	380 ctx->deltas = malloc(0);
adamc@671	381
adamc@673	382 ctx->timeout = uw_timeout;
adamc@673	383
adamc@700	384 ctx->client = NULL;
adamc@700	385
adamc@700	386 ctx->error_message[0] = 0;
adamc@700	387
adamc@771	388 ctx->transactionals = malloc(0);
adamc@771	389 ctx->n_transactionals = ctx->used_transactionals = 0;
adamc@771	390
adamc@117	391 return ctx;
adamc@106	392 }
adamc@106	393
adamc@311	394 void uw_set_db(uw_context ctx, void *db) {
adamc@272	395 ctx->db = db;
adamc@272	396 }
adamc@272	397
adamc@311	398 void *uw_get_db(uw_context ctx) {
adamc@272	399 return ctx->db;
adamc@272	400 }
adamc@272	401
adamc@311	402 void uw_free(uw_context ctx) {
adamc@671	403 size_t i;
adamc@671	404
adamc@666	405 buf_free(&ctx->outHeaders);
adamc@666	406 buf_free(&ctx->script);
adamc@666	407 buf_free(&ctx->page);
adamc@666	408 buf_free(&ctx->heap);
adamc@144	409 free(ctx->inputs);
adamc@756	410 free(ctx->subinputs);
adamc@425	411 free(ctx->cleanup);
adamc@771	412 free(ctx->transactionals);
adamc@671	413
adamc@682	414 for (i = 0; i < ctx->n_deltas; ++i)
adamc@671	415 buf_free(&ctx->deltas[i].msgs);
adamc@671	416
adamc@136	417 free(ctx);
adamc@136	418 }
adamc@136	419
adamc@562	420 void uw_reset_keep_error_message(uw_context ctx) {
adamc@756	421 size_t i;
adamc@756	422
adamc@666	423 buf_reset(&ctx->outHeaders);
adamc@666	424 buf_reset(&ctx->script);
adamc@667	425 ctx->script.start[0] = 0;
adamc@666	426 buf_reset(&ctx->page);
adamc@666	427 buf_reset(&ctx->heap);
adamc@323	428 ctx->regions = NULL;
adamc@425	429 ctx->cleanup_front = ctx->cleanup;
adamc@565	430 ctx->source_count = 0;
adamc@682	431 ctx->used_deltas = 0;
adamc@682	432 ctx->client = NULL;
adamc@759	433 ctx->cur_container = NULL;
adamc@771	434 ctx->used_transactionals = 0;
adamc@167	435 }
adamc@167	436
adamc@562	437 void uw_reset_keep_request(uw_context ctx) {
adamc@562	438 uw_reset_keep_error_message(ctx);
adamc@562	439 ctx->error_message[0] = 0;
adamc@167	440 }
adamc@167	441
adamc@311	442 void uw_reset(uw_context ctx) {
adamc@311	443 uw_reset_keep_request(ctx);
adamc@737	444 memset(ctx->inputs, 0, uw_inputs_len * sizeof(input));
adamc@756	445 memset(ctx->subinputs, 0, ctx->n_subinputs * sizeof(input));
adamc@756	446 ctx->used_subinputs = 0;
adamc@144	447 }
adamc@144	448
adamc@311	449 void uw_db_init(uw_context);
adamc@311	450 void uw_handle(uw_context, char *);
adamc@167	451
adamc@311	452 failure_kind uw_begin_init(uw_context ctx) {
adamc@272	453 int r = setjmp(ctx->jmp_buf);
adamc@272	454
adamc@272	455 if (r == 0)
adamc@311	456 uw_db_init(ctx);
adamc@272	457
adamc@272	458 return r;
adamc@272	459 }
adamc@272	460
adamc@458	461 void uw_set_headers(uw_context ctx, char *headers) {
adamc@458	462 char s = headers, s2;
adamc@458	463 ctx->headers = headers;
adamc@458	464
adamc@458	465 while (s2 = strchr(s, '\r')) {
adamc@458	466 s = s2;
adamc@458	467
adamc@458	468 if (s[1] == 0)
adamc@458	469 break;
adamc@458	470
adamc@458	471 *s = 0;
adamc@458	472 s += 2;
adamc@458	473 }
adamc@458	474
adamc@458	475 ctx->headers_end = s;
adamc@458	476 }
adamc@458	477
adamc@742	478 void uw_headers_moved(uw_context ctx, char *headers) {
adamc@742	479 ctx->headers_end = headers + (ctx->headers_end - ctx->headers);
adamc@742	480 ctx->headers = headers;
adamc@742	481 }
adamc@742	482
adamc@671	483 int uw_db_begin(uw_context);
adamc@167	484
adamc@801	485 static void uw_set_error(uw_context ctx, const char *fmt, ...) {
adamc@801	486 va_list ap;
adamc@801	487 va_start(ap, fmt);
adamc@801	488
adamc@801	489 vsnprintf(ctx->error_message, ERROR_BUF_LEN, fmt, ap);
adamc@801	490 }
adamc@801	491
adamc@311	492 __attribute__((noreturn)) void uw_error(uw_context ctx, failure_kind fk, const char *fmt, ...) {
adamc@425	493 cleanup *cl;
adamc@425	494
adamc@167	495 va_list ap;
adamc@167	496 va_start(ap, fmt);
adamc@167	497
adamc@167	498 vsnprintf(ctx->error_message, ERROR_BUF_LEN, fmt, ap);
adamc@167	499
adamc@425	500 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adamc@425	501 cl->func(cl->arg);
adamc@425	502
adamc@425	503 ctx->cleanup_front = ctx->cleanup;
adamc@425	504
adamc@190	505 longjmp(ctx->jmp_buf, fk);
adamc@167	506 }
adamc@167	507
adamc@425	508 void uw_push_cleanup(uw_context ctx, void (func)(void ), void *arg) {
adamc@425	509 if (ctx->cleanup_front >= ctx->cleanup_back) {
adamc@425	510 int len = ctx->cleanup_back - ctx->cleanup, newLen;
adamc@425	511 if (len == 0)
adamc@425	512 newLen = 1;
adamc@425	513 else
adamc@428	514 newLen = len * 2;
adamc@470	515 ctx->cleanup = realloc(ctx->cleanup, newLen * sizeof(cleanup));
adamc@425	516 ctx->cleanup_front = ctx->cleanup + len;
adamc@425	517 ctx->cleanup_back = ctx->cleanup + newLen;
adamc@425	518 }
adamc@425	519
adamc@425	520 ctx->cleanup_front->func = func;
adamc@425	521 ctx->cleanup_front->arg = arg;
adamc@425	522 ++ctx->cleanup_front;
adamc@425	523 }
adamc@425	524
adamc@682	525 uw_Basis_string uw_Basis_requestHeader(uw_context ctx, uw_Basis_string h) {
adamc@682	526 int len = strlen(h);
adamc@682	527 char s = ctx->headers, p;
adamc@682	528
adamc@682	529 while (p = strchr(s, ':')) {
adamc@682	530 if (p - s == len && !strncasecmp(s, h, len)) {
adamc@682	531 return p + 2;
adamc@682	532 } else {
adamc@682	533 if ((s = strchr(p, 0)) && s < ctx->headers_end)
adamc@682	534 s += 2;
adamc@682	535 else
adamc@682	536 return NULL;
adamc@682	537 }
adamc@682	538 }
adamc@682	539
adamc@682	540 return NULL;
adamc@682	541 }
adamc@682	542
adamc@682	543 void uw_login(uw_context ctx) {
adamc@693	544 if (ctx->needs_push) {
adamc@682	545 char id_s, pass_s;
adamc@682	546
adamc@682	547 if ((id_s = uw_Basis_requestHeader(ctx, "UrWeb-Client"))
adamc@682	548 && (pass_s = uw_Basis_requestHeader(ctx, "UrWeb-Pass"))) {
adamc@682	549 unsigned id = atoi(id_s);
adamc@682	550 int pass = atoi(pass_s);
adamc@682	551 client *c = find_client(id);
adamc@682	552
adamc@682	553 if (c == NULL)
adamc@682	554 uw_error(ctx, FATAL, "Unknown client ID in HTTP headers (%s, %s)", id_s, pass_s);
adamc@682	555 else {
adamc@685	556 use_client(c);
adamc@682	557 ctx->client = c;
adamc@682	558
adamc@682	559 if (c->mode != USED)
adamc@682	560 uw_error(ctx, FATAL, "Stale client ID (%u) in subscription request", id);
adamc@682	561 if (c->pass != pass)
adamc@682	562 uw_error(ctx, FATAL, "Wrong client password (%u, %d) in subscription request", id, pass);
adamc@682	563 }
adamc@682	564 } else {
adamc@682	565 client *c = new_client();
adamc@685	566 use_client(c);
adamc@682	567 ctx->client = c;
adamc@682	568 }
adamc@682	569 }
adamc@682	570 }
adamc@682	571
adamc@671	572 failure_kind uw_begin(uw_context ctx, char *path) {
adamc@671	573 int r = setjmp(ctx->jmp_buf);
adamc@671	574
adamc@671	575 if (r == 0) {
adamc@671	576 if (uw_db_begin(ctx))
adamc@671	577 uw_error(ctx, BOUNDED_RETRY, "Error running SQL BEGIN");
adamc@682	578
adamc@671	579 uw_handle(ctx, path);
adamc@671	580 }
adamc@671	581
adamc@671	582 return r;
adamc@671	583 }
adamc@671	584
adamc@772	585 uw_Basis_client uw_Basis_self(uw_context ctx) {
adamc@682	586 if (ctx->client == NULL)
adamc@682	587 uw_error(ctx, FATAL, "Call to Basis.self() from page that has only server-side code");
adamc@682	588
adamc@682	589 return ctx->client->id;
adamc@682	590 }
adamc@682	591
adamc@425	592 void uw_pop_cleanup(uw_context ctx) {
adamc@425	593 if (ctx->cleanup_front == ctx->cleanup)
adamc@425	594 uw_error(ctx, FATAL, "Attempt to pop from empty cleanup action stack");
adamc@425	595
adamc@425	596 --ctx->cleanup_front;
adamc@425	597 ctx->cleanup_front->func(ctx->cleanup_front->arg);
adamc@425	598 }
adamc@425	599
adamc@311	600 char *uw_error_message(uw_context ctx) {
adamc@167	601 return ctx->error_message;
adamc@167	602 }
adamc@167	603
adamc@737	604 extern int uw_input_num(const char*);
adamc@144	605
adamc@759	606 static input *INP(uw_context ctx) {
adamc@759	607 if (ctx->cur_container == NULL)
adamc@759	608 return ctx->inputs;
adamc@759	609 else if (ctx->cur_container->kind == SUBFORM)
adamc@759	610 return ctx->cur_container->data.subform.fields;
adamc@759	611 else if (ctx->cur_container->kind == ENTRY)
adamc@759	612 return ctx->cur_container->data.entry.fields;
adamc@759	613 else
adamc@760	614 uw_error(ctx, FATAL, "INP: Wrong kind (%d, %p)", ctx->cur_container->kind, ctx->cur_container);
adamc@759	615 }
adamc@759	616
adamc@760	617 static void adjust_pointer(input *ptr, input old_start, input *new_start, size_t len) {
adamc@760	618 if (ptr != NULL && ptr >= old_start && *ptr < old_start + len)
adamc@760	619 *ptr += new_start - old_start;
adamc@760	620 }
adamc@760	621
adamc@760	622 static void adjust_input(input x, input old_start, input *new_start, size_t len) {
adamc@759	623 switch (x->kind) {
adamc@759	624 case SUBFORM:
adamc@760	625 adjust_pointer(&x->data.subform.fields, old_start, new_start, len);
adamc@760	626 adjust_pointer(&x->data.subform.parent, old_start, new_start, len);
adamc@759	627 break;
adamc@759	628 case SUBFORMS:
adamc@760	629 adjust_pointer(&x->data.subforms.entries, old_start, new_start, len);
adamc@760	630 adjust_pointer(&x->data.subforms.parent, old_start, new_start, len);
adamc@759	631 break;
adamc@759	632 case ENTRY:
adamc@760	633 adjust_pointer(&x->data.entry.fields, old_start, new_start, len);
adamc@760	634 adjust_pointer(&x->data.entry.next, old_start, new_start, len);
adamc@760	635 adjust_pointer(&x->data.entry.parent, old_start, new_start, len);
adamc@759	636 }
adamc@759	637 }
adamc@759	638
adamc@759	639 static input *check_input_space(uw_context ctx, size_t len) {
adamc@759	640 size_t i;
adamc@759	641 input *r;
adamc@759	642
adamc@759	643 if (ctx->used_subinputs + len >= ctx->n_subinputs) {
adamc@759	644 input new_subinputs = realloc(ctx->subinputs, sizeof(input) (ctx->used_subinputs + len));
adamc@759	645 size_t offset = new_subinputs - ctx->subinputs;
adamc@759	646
adamc@760	647 if (ctx->subinputs != new_subinputs) {
adamc@760	648 for (i = 0; i < ctx->used_subinputs; ++i)
adamc@760	649 adjust_input(&new_subinputs[i], ctx->subinputs, new_subinputs, ctx->used_subinputs);
adamc@760	650 for (i = 0; i < uw_inputs_len; ++i)
adamc@760	651 adjust_input(&ctx->inputs[i], ctx->subinputs, new_subinputs, ctx->used_subinputs);
adamc@760	652
adamc@760	653 adjust_pointer(&ctx->cur_container, ctx->subinputs, new_subinputs, ctx->used_subinputs);
adamc@760	654
adamc@760	655 ctx->n_subinputs = ctx->used_subinputs + len;
adamc@760	656 ctx->subinputs = new_subinputs;
adamc@760	657 }
adamc@759	658 }
adamc@759	659
adamc@759	660 r = &ctx->subinputs[ctx->used_subinputs];
adamc@759	661
adamc@759	662 for (i = 0; i < len; ++i)
adamc@759	663 ctx->subinputs[ctx->used_subinputs++].kind = UNUSED;
adamc@759	664
adamc@759	665 return r;
adamc@759	666 }
adamc@756	667
adamc@801	668 int uw_set_input(uw_context ctx, const char name, char value) {
adamc@756	669 if (!strcasecmp(name, ".b")) {
adamc@756	670 int n = uw_input_num(value);
adamc@756	671 input *inps;
adamc@756	672
adamc@801	673 if (n < 0) {
adamc@801	674 uw_set_error(ctx, "Bad subform name %s", value);
adamc@801	675 return -1;
adamc@801	676 }
adamc@801	677
adamc@801	678 if (n >= uw_inputs_len) {
adamc@801	679 uw_set_error(ctx, "For subform name %s, index %d is out of range", value, n);
adamc@801	680 return -1;
adamc@801	681 }
adamc@756	682
adamc@759	683 inps = check_input_space(ctx, uw_inputs_len);
adamc@759	684
adamc@759	685 INP(ctx)[n].kind = SUBFORM;
adamc@759	686 INP(ctx)[n].data.subform.parent = ctx->cur_container;
adamc@759	687 INP(ctx)[n].data.subform.fields = inps;
adamc@759	688 ctx->cur_container = &INP(ctx)[n];
adamc@756	689 } else if (!strcasecmp(name, ".e")) {
adamc@756	690 input *tmp;
adamc@756	691
adamc@801	692 if (ctx->cur_container == NULL) {
adamc@801	693 uw_set_error(ctx, "Unmatched subform closer");
adamc@801	694 return -1;
adamc@801	695 }
adamc@756	696
adamc@759	697 tmp = ctx->cur_container;
adamc@759	698 switch (tmp->kind) {
adamc@759	699 case SUBFORM:
adamc@759	700 ctx->cur_container = tmp->data.subform.parent;
adamc@759	701 tmp->data.subform.parent = NULL;
adamc@759	702 break;
adamc@759	703 case SUBFORMS:
adamc@759	704 ctx->cur_container = tmp->data.subforms.parent;
adamc@759	705 tmp->data.subforms.parent = NULL;
adamc@759	706 break;
adamc@759	707 case ENTRY:
adamc@759	708 ctx->cur_container = tmp->data.entry.parent;
adamc@759	709 break;
adamc@759	710 default:
adamc@801	711 uw_set_error(ctx, "uw_set_input: Wrong kind");
adamc@801	712 return -1;
adamc@759	713 }
adamc@759	714 } else if (!strcasecmp(name, ".s")) {
adamc@759	715 int n = uw_input_num(value);
adamc@759	716
adamc@801	717 if (n < 0) {
adamc@801	718 uw_set_error(ctx, "Bad subforms name %s", value);
adamc@801	719 return -1;
adamc@801	720 }
adamc@801	721
adamc@801	722 if (n >= uw_inputs_len) {
adamc@801	723 uw_set_error(ctx, "For subforms name %s, index %d is out of range", value, n);
adamc@801	724 return -1;
adamc@801	725 }
adamc@759	726
adamc@759	727 INP(ctx)[n].kind = SUBFORMS;
adamc@759	728 INP(ctx)[n].data.subforms.parent = ctx->cur_container;
adamc@759	729 INP(ctx)[n].data.subforms.entries = NULL;
adamc@759	730 ctx->cur_container = &INP(ctx)[n];
adamc@759	731 } else if (!strcasecmp(name, ".i")) {
adamc@759	732 input *inps;
adamc@759	733
adamc@801	734 if (!ctx->cur_container) {
adamc@801	735 uw_set_error(ctx, "New entry without container");
adamc@801	736 return -1;
adamc@801	737 }
adamc@801	738
adamc@801	739 if (ctx->cur_container->kind != SUBFORMS) {
adamc@801	740 uw_set_error(ctx, "Bad kind for entry parent");
adamc@801	741 return -1;
adamc@801	742 }
adamc@759	743
adamc@759	744 inps = check_input_space(ctx, uw_inputs_len + 1);
adamc@759	745
adamc@759	746 inps->kind = ENTRY;
adamc@759	747 inps->data.entry.parent = ctx->cur_container;
adamc@759	748 inps->data.entry.next = ctx->cur_container->data.subforms.entries;
adamc@759	749 ctx->cur_container->data.subforms.entries = inps;
adamc@759	750
adamc@759	751 inps->data.entry.fields = inps+1;
adamc@759	752 ctx->cur_container = inps;
adamc@756	753 } else {
adamc@756	754 int n = uw_input_num(name);
adamc@756	755
adamc@801	756 if (n < 0) {
adamc@801	757 uw_set_error(ctx, "Bad input name %s", name);
adamc@801	758 return -1;
adamc@801	759 }
adamc@801	760
adamc@801	761 if (n >= uw_inputs_len) {
adamc@801	762 uw_set_error(ctx, "For input name %s, index %d is out of range", name, n);
adamc@801	763 return -1;
adamc@801	764 }
adamc@756	765
adamc@756	766 INP(ctx)[n].kind = NORMAL;
adamc@756	767 INP(ctx)[n].data.normal = value;
adamc@756	768 }
adamc@801	769
adamc@801	770 return 0;
adamc@144	771 }
adamc@144	772
adamc@311	773 char *uw_get_input(uw_context ctx, int n) {
adamc@169	774 if (n < 0)
adamc@311	775 uw_error(ctx, FATAL, "Negative input index %d", n);
adamc@311	776 if (n >= uw_inputs_len)
adamc@311	777 uw_error(ctx, FATAL, "Out-of-bounds input index %d", n);
adamc@737	778
adamc@756	779 switch (INP(ctx)[n].kind) {
adamc@737	780 case UNSET:
adamc@737	781 return NULL;
adamc@739	782 case FIL:
adamc@739	783 uw_error(ctx, FATAL, "Tried to read a file form input as normal");
adamc@756	784 case SUBFORM:
adamc@756	785 uw_error(ctx, FATAL, "Tried to read a subform form input as normal");
adamc@759	786 case SUBFORMS:
adamc@759	787 uw_error(ctx, FATAL, "Tried to read a subforms form input as normal");
adamc@759	788 case ENTRY:
adamc@759	789 uw_error(ctx, FATAL, "Tried to read an entry form input as normal");
adamc@737	790 case NORMAL:
adamc@756	791 return INP(ctx)[n].data.normal;
adamc@737	792 default:
adamc@737	793 uw_error(ctx, FATAL, "Impossible input kind");
adamc@737	794 }
adamc@138	795 }
adamc@138	796
adamc@311	797 char *uw_get_optional_input(uw_context ctx, int n) {
adamc@190	798 if (n < 0)
adamc@311	799 uw_error(ctx, FATAL, "Negative input index %d", n);
adamc@311	800 if (n >= uw_inputs_len)
adamc@311	801 uw_error(ctx, FATAL, "Out-of-bounds input index %d", n);
adamc@737	802
adamc@756	803 switch (INP(ctx)[n].kind) {
adamc@737	804 case UNSET:
adamc@737	805 return "";
adamc@739	806 case FIL:
adamc@739	807 uw_error(ctx, FATAL, "Tried to read a file form input as normal");
adamc@756	808 case SUBFORM:
adamc@756	809 uw_error(ctx, FATAL, "Tried to read a subform form input as normal");
adamc@759	810 case SUBFORMS:
adamc@759	811 uw_error(ctx, FATAL, "Tried to read a subforms form input as normal");
adamc@759	812 case ENTRY:
adamc@759	813 uw_error(ctx, FATAL, "Tried to read an entry form input as normal");
adamc@737	814 case NORMAL:
adamc@756	815 return INP(ctx)[n].data.normal;
adamc@737	816 default:
adamc@737	817 uw_error(ctx, FATAL, "Impossible input kind");
adamc@737	818 }
adamc@737	819 }
adamc@737	820
adamc@801	821 int uw_set_file_input(uw_context ctx, const char *name, uw_Basis_file f) {
adamc@737	822 int n = uw_input_num(name);
adamc@737	823
adamc@801	824 if (n < 0) {
adamc@801	825 uw_set_error(ctx, "Bad file input name %s", name);
adamc@801	826 return -1;
adamc@801	827 }
adamc@801	828
adamc@801	829 if (n >= uw_inputs_len) {
adamc@801	830 uw_set_error(ctx, "For file input name %s, index %d is out of range", name, n);
adamc@801	831 return -1;
adamc@801	832 }
adamc@737	833
adamc@739	834 ctx->inputs[n].kind = FIL;
adamc@739	835 ctx->inputs[n].data.file = f;
adamc@801	836
adamc@801	837 return 0;
adamc@737	838 }
adamc@737	839
adamc@739	840 void *uw_malloc(uw_context ctx, size_t len);
adamc@739	841
adamc@760	842
adamc@760	843 static void parents(input *inp) {
adamc@760	844 printf("Stack: %p\n", inp);
adamc@760	845 while (inp) {
adamc@760	846 switch (inp->kind) {
adamc@760	847 case NORMAL:
adamc@760	848 printf("Normal(%p)\n", inp);
adamc@760	849 break;
adamc@760	850 case FIL:
adamc@760	851 printf("File(%p)\n", inp);
adamc@760	852 break;
adamc@760	853 case SUBFORM:
adamc@760	854 printf("Subform; fields = %p\n", inp->data.subform.fields);
adamc@760	855 inp = inp->data.subform.parent;
adamc@760	856 break;
adamc@760	857 case SUBFORMS:
adamc@760	858 printf("Subforms; entries = %p\n", inp->data.subforms.entries);
adamc@760	859 inp = inp->data.subforms.parent;
adamc@760	860 break;
adamc@760	861 case ENTRY:
adamc@760	862 printf("Entry; fields = %p; next = %p\n", inp->data.entry.fields, inp->data.entry.next);
adamc@760	863 inp = inp->data.entry.parent;
adamc@760	864 break;
adamc@760	865 default:
adamc@760	866 inp = NULL;
adamc@760	867 }
adamc@760	868 }
adamc@760	869 }
adamc@760	870
adamc@739	871 uw_Basis_file uw_get_file_input(uw_context ctx, int n) {
adamc@737	872 if (n < 0)
adamc@737	873 uw_error(ctx, FATAL, "Negative file input index %d", n);
adamc@737	874 if (n >= uw_inputs_len)
adamc@737	875 uw_error(ctx, FATAL, "Out-of-bounds file input index %d", n);
adamc@737	876
adamc@756	877 switch (INP(ctx)[n].kind) {
adamc@737	878 case UNSET:
adamc@737	879 {
adamc@739	880 char *data = uw_malloc(ctx, 0);
adamc@740	881 uw_Basis_file f = {NULL, "", {0, data}};
adamc@739	882 return f;
adamc@737	883 }
adamc@739	884 case FIL:
adamc@756	885 return INP(ctx)[n].data.file;
adamc@737	886 case NORMAL:
adamc@737	887 uw_error(ctx, FATAL, "Tried to read a normal form input as files");
adamc@756	888 case SUBFORM:
adamc@756	889 uw_error(ctx, FATAL, "Tried to read a subform form input as files");
adamc@759	890 case SUBFORMS:
adamc@759	891 uw_error(ctx, FATAL, "Tried to read a subforms form input as files");
adamc@759	892 case ENTRY:
adamc@759	893 uw_error(ctx, FATAL, "Tried to read an entry form input as files");
adamc@737	894 default:
adamc@737	895 uw_error(ctx, FATAL, "Impossible input kind");
adamc@737	896 }
adamc@190	897 }
adamc@190	898
adamc@756	899 void uw_enter_subform(uw_context ctx, int n) {
adamc@756	900 if (n < 0)
adamc@756	901 uw_error(ctx, FATAL, "Negative subform index %d", n);
adamc@756	902 if (n >= uw_inputs_len)
adamc@756	903 uw_error(ctx, FATAL, "Out-of-bounds subform index %d", n);
adamc@756	904
adamc@756	905 switch (INP(ctx)[n].kind) {
adamc@756	906 case UNSET:
adamc@756	907 uw_error(ctx, FATAL, "Missing subform");
adamc@756	908 case FIL:
adamc@756	909 uw_error(ctx, FATAL, "Tried to read a file form input as subform");
adamc@756	910 case NORMAL:
adamc@756	911 uw_error(ctx, FATAL, "Tried to read a normal form input as subform");
adamc@759	912 case SUBFORMS:
adamc@759	913 uw_error(ctx, FATAL, "Tried to read a subforms form input as subform");
adamc@759	914 case ENTRY:
adamc@759	915 uw_error(ctx, FATAL, "Tried to read an entry form input as subform");
adamc@756	916 case SUBFORM:
adamc@759	917 INP(ctx)[n].data.subform.parent = ctx->cur_container;
adamc@760	918 ctx->cur_container = &INP(ctx)[n];
adamc@756	919 return;
adamc@756	920 default:
adamc@756	921 uw_error(ctx, FATAL, "Impossible input kind");
adamc@756	922 }
adamc@756	923 }
adamc@756	924
adamc@756	925 void uw_leave_subform(uw_context ctx) {
adamc@756	926 input *tmp;
adamc@756	927
adamc@759	928 if (ctx->cur_container == NULL)
adamc@756	929 uw_error(ctx, FATAL, "Unmatched uw_leave_subform");
adamc@756	930
adamc@759	931 tmp = ctx->cur_container;
adamc@759	932 ctx->cur_container = tmp->data.subform.parent;
adamc@759	933 tmp->data.subform.parent = NULL;
adamc@759	934 }
adamc@759	935
adamc@759	936 int uw_enter_subforms(uw_context ctx, int n) {
adamc@759	937 input *inps;
adamc@759	938
adamc@759	939 if (n < 0)
adamc@759	940 uw_error(ctx, FATAL, "Negative subforms index %d", n);
adamc@759	941 if (n >= uw_inputs_len)
adamc@759	942 uw_error(ctx, FATAL, "Out-of-bounds subforms index %d", n);
adamc@759	943
adamc@759	944 switch (INP(ctx)[n].kind) {
adamc@759	945 case UNSET:
adamc@759	946 uw_error(ctx, FATAL, "Missing subforms");
adamc@759	947 case FIL:
adamc@759	948 uw_error(ctx, FATAL, "Tried to read a file form input as subforms");
adamc@759	949 case NORMAL:
adamc@759	950 uw_error(ctx, FATAL, "Tried to read a normal form input %p as subforms", &INP(ctx)[n]);
adamc@759	951 case SUBFORM:
adamc@759	952 uw_error(ctx, FATAL, "Tried to read a subform form input as subforms");
adamc@759	953 case ENTRY:
adamc@759	954 uw_error(ctx, FATAL, "Tried to read an entry form input as subforms");
adamc@759	955 case SUBFORMS:
adamc@759	956 inps = INP(ctx)[n].data.subforms.entries;
adamc@759	957 if (inps) {
adamc@759	958 INP(ctx)[n].data.subforms.parent = ctx->cur_container;
adamc@759	959 ctx->cur_container = INP(ctx)[n].data.subforms.entries;
adamc@759	960 return 1;
adamc@759	961 } else
adamc@759	962 return 0;
adamc@759	963 default:
adamc@759	964 uw_error(ctx, FATAL, "Impossible input kind");
adamc@759	965 }
adamc@759	966 }
adamc@759	967
adamc@759	968 int uw_next_entry(uw_context ctx) {
adamc@759	969 if (ctx->cur_container == NULL)
adamc@759	970 uw_error(ctx, FATAL, "uw_next_entry(NULL)");
adamc@759	971
adamc@759	972 switch (ctx->cur_container->kind) {
adamc@759	973 case UNSET:
adamc@759	974 uw_error(ctx, FATAL, "Missing entry");
adamc@759	975 case FIL:
adamc@759	976 uw_error(ctx, FATAL, "Tried to read a file form input as entry");
adamc@759	977 case NORMAL:
adamc@759	978 uw_error(ctx, FATAL, "Tried to read a normal form input as entry");
adamc@759	979 case SUBFORM:
adamc@759	980 uw_error(ctx, FATAL, "Tried to read a subform form input as entry");
adamc@759	981 case SUBFORMS:
adamc@759	982 uw_error(ctx, FATAL, "Tried to read a subforms form input as entry");
adamc@759	983 case ENTRY:
adamc@759	984 if (ctx->cur_container->data.entry.next) {
adamc@759	985 ctx->cur_container = ctx->cur_container->data.entry.next;
adamc@759	986 return 1;
adamc@759	987 } else {
adamc@759	988 ctx->cur_container = ctx->cur_container->data.entry.parent->data.subforms.parent;
adamc@759	989 return 0;
adamc@759	990 }
adamc@759	991 default:
adamc@759	992 uw_error(ctx, FATAL, "Impossible input kind");
adamc@759	993 }
adamc@756	994 }
adamc@756	995
adamc@643	996 void uw_set_script_header(uw_context ctx, const char *s) {
adamc@643	997 ctx->script_header = s;
adamc@643	998 }
adamc@643	999
adamc@667	1000 void uw_set_url_prefix(uw_context ctx, const char *s) {
adamc@667	1001 ctx->url_prefix = s;
adamc@667	1002 }
adamc@667	1003
adamc@693	1004 void uw_set_needs_push(uw_context ctx, int n) {
adamc@693	1005 ctx->needs_push = n;
adamc@693	1006 }
adamc@693	1007
adamc@736	1008 void uw_set_needs_sig(uw_context ctx, int n) {
adamc@736	1009 ctx->needs_sig = n;
adamc@736	1010 }
adamc@736	1011
adamc@667	1012
adamc@667	1013 static void buf_check_ctx(uw_context ctx, buf b, size_t extra, const char desc) {
adamc@666	1014 if (b->back - b->front < extra) {
adamc@666	1015 size_t desired = b->front - b->start + extra, next;
adamc@136	1016 char *new_heap;
adamc@136	1017
adamc@666	1018 next = b->back - b->start;
adamc@317	1019 if (next == 0)
adamc@317	1020 next = 1;
adamc@317	1021 for (; next < desired; next *= 2);
adamc@136	1022
adamc@666	1023 new_heap = realloc(b->start, next);
adamc@666	1024 b->front = new_heap + (b->front - b->start);
adamc@666	1025 b->back = new_heap + next;
adamc@136	1026
adamc@667	1027 if (new_heap != b->start) {
adamc@666	1028 b->start = new_heap;
adamc@666	1029 uw_error(ctx, UNLIMITED_RETRY, "Couldn't allocate new %s contiguously", desc);
adamc@136	1030 }
adamc@136	1031
adamc@666	1032 b->start = new_heap;
adamc@136	1033 }
adamc@136	1034 }
adamc@136	1035
adamc@832	1036 void uw_check_heap(uw_context ctx, size_t extra) {
adamc@667	1037 buf_check_ctx(ctx, &ctx->heap, extra, "heap chunk");
adamc@666	1038 }
adamc@666	1039
adamc@832	1040 char *uw_heap_front(uw_context ctx) {
adamc@832	1041 return ctx->heap.front;
adamc@832	1042 }
adamc@832	1043
adamc@832	1044 void uw_set_heap_front(uw_context ctx, char *fr) {
adamc@832	1045 ctx->heap.front = fr;
adamc@832	1046 }
adamc@832	1047
adamc@311	1048 void *uw_malloc(uw_context ctx, size_t len) {
adamc@136	1049 void *result;
adamc@136	1050
adamc@311	1051 uw_check_heap(ctx, len);
adamc@136	1052
adamc@666	1053 result = ctx->heap.front;
adamc@666	1054 ctx->heap.front += len;
adamc@136	1055 return result;
adamc@117	1056 }
adamc@117	1057
adamc@323	1058 void uw_begin_region(uw_context ctx) {
adamc@666	1059 regions r = (regions ) ctx->heap.front;
adamc@323	1060
adamc@323	1061 uw_check_heap(ctx, sizeof(regions));
adamc@323	1062
adamc@666	1063 ctx->heap.front += sizeof(regions);
adamc@323	1064
adamc@323	1065 r->next = ctx->regions;
adamc@323	1066 ctx->regions = r;
adamc@323	1067 }
adamc@323	1068
adamc@323	1069 void uw_end_region(uw_context ctx) {
adamc@323	1070 regions *r = ctx->regions;
adamc@323	1071
adamc@323	1072 if (r == NULL)
adamc@323	1073 uw_error(ctx, FATAL, "Region stack underflow");
adamc@323	1074
adamc@666	1075 ctx->heap.front = (char *) r;
adamc@323	1076 ctx->regions = r->next;
adamc@323	1077 }
adamc@323	1078
adamc@324	1079 void uw_memstats(uw_context ctx) {
adamc@666	1080 printf("Headers: %d/%d\n", buf_used(&ctx->outHeaders), buf_avail(&ctx->outHeaders));
adamc@666	1081 printf("Script: %d/%d\n", buf_used(&ctx->script), buf_avail(&ctx->script));
adamc@666	1082 printf("Page: %d/%d\n", buf_used(&ctx->page), buf_avail(&ctx->page));
adamc@666	1083 printf("Heap: %d/%d\n", buf_used(&ctx->heap), buf_avail(&ctx->heap));
adamc@324	1084 }
adamc@324	1085
adamc@311	1086 int uw_send(uw_context ctx, int sock) {
adamc@666	1087 int n = uw_really_send(sock, ctx->outHeaders.start, ctx->outHeaders.front - ctx->outHeaders.start);
adamc@462	1088
adamc@462	1089 if (n < 0)
adamc@462	1090 return n;
adamc@462	1091
adamc@462	1092 n = uw_really_send(sock, "\r\n", 2);
adamc@462	1093
adamc@462	1094 if (n < 0)
adamc@462	1095 return n;
adamc@462	1096
adamc@666	1097 return uw_really_send(sock, ctx->page.start, ctx->page.front - ctx->page.start);
adamc@462	1098 }
adamc@462	1099
adamc@462	1100 static void uw_check_headers(uw_context ctx, size_t extra) {
adamc@667	1101 buf_check(&ctx->outHeaders, extra);
adamc@462	1102 }
adamc@462	1103
adamc@462	1104 void uw_write_header(uw_context ctx, uw_Basis_string s) {
adamc@462	1105 int len = strlen(s);
adamc@462	1106
adamc@462	1107 uw_check_headers(ctx, len + 1);
adamc@666	1108 strcpy(ctx->outHeaders.front, s);
adamc@666	1109 ctx->outHeaders.front += len;
adamc@562	1110 }
adamc@562	1111
adamc@562	1112 static void uw_check_script(uw_context ctx, size_t extra) {
adamc@667	1113 buf_check(&ctx->script, extra);
adamc@562	1114 }
adamc@562	1115
adamc@562	1116 void uw_write_script(uw_context ctx, uw_Basis_string s) {
adamc@562	1117 int len = strlen(s);
adamc@562	1118
adamc@562	1119 uw_check_script(ctx, len + 1);
adamc@666	1120 strcpy(ctx->script.front, s);
adamc@666	1121 ctx->script.front += len;
adamc@562	1122 }
adamc@562	1123
adamc@645	1124 const char *uw_Basis_get_script(uw_context ctx, uw_unit u) {
adamc@667	1125 if (ctx->script_header[0] == 0)
adamc@667	1126 return "";
adamc@696	1127 else if (buf_used(&ctx->script) == 0)
adamc@696	1128 return ctx->script_header;
adamc@667	1129 else {
adamc@695	1130 char *r = uw_malloc(ctx, strlen(ctx->script_header) + 42 + buf_used(&ctx->script));
adamc@695	1131 sprintf(r, "%s<script type=\"text/javascript\">%s</script>",
adamc@673	1132 ctx->script_header,
adamc@673	1133 ctx->script.start);
adamc@565	1134 return r;
adamc@565	1135 }
adamc@565	1136 }
adamc@565	1137
adamc@695	1138 uw_Basis_string uw_Basis_maybe_onload(uw_context ctx, uw_Basis_string s) {
adamc@695	1139 if (s[0] == 0)
adamc@695	1140 return "";
adamc@695	1141 else {
adamc@695	1142 char *r = uw_malloc(ctx, 11 + strlen(s));
adamc@695	1143 sprintf(r, " onload='%s'", s);
adamc@695	1144 return r;
adamc@695	1145 }
adamc@695	1146 }
adamc@695	1147
adamc@736	1148 extern uw_Basis_string uw_cookie_sig(uw_context);
adamc@736	1149
adamc@694	1150 const char *uw_Basis_get_settings(uw_context ctx, uw_unit u) {
adamc@736	1151 if (ctx->client == NULL) {
adamc@736	1152 if (ctx->needs_sig) {
adamc@736	1153 char *sig = uw_cookie_sig(ctx);
adamc@736	1154 char *r = uw_malloc(ctx, strlen(sig) + 8);
adamc@736	1155 sprintf(r, "sig=\"%s\";", sig);
adamc@736	1156 return r;
adamc@736	1157 }
adamc@736	1158 else
adamc@736	1159 return "";
adamc@736	1160 } else {
adamc@736	1161 char *sig = ctx->needs_sig ? uw_cookie_sig(ctx) : "";
adamc@736	1162 char r = uw_malloc(ctx, 59 + 3 INTS_MAX + strlen(ctx->url_prefix)
adamc@736	1163 + (ctx->needs_sig ? strlen(sig) + 7 : 0));
adamc@736	1164 sprintf(r, "client_id=%u;client_pass=%d;url_prefix=\"%s\";timeout=%d;%s%s%slistener();",
adamc@682	1165 ctx->client->id,
adamc@682	1166 ctx->client->pass,
adamc@679	1167 ctx->url_prefix,
adamc@736	1168 ctx->timeout,
adamc@736	1169 ctx->needs_sig ? "sig=\"" : "",
adamc@736	1170 sig,
adamc@736	1171 ctx->needs_sig ? "\";" : "");
adamc@679	1172 return r;
adamc@668	1173 }
adamc@667	1174 }
adamc@667	1175
adamc@574	1176 uw_Basis_string uw_Basis_jsifyString(uw_context ctx, uw_Basis_string s) {
adamc@574	1177 char r, s2;
adamc@574	1178
adamc@574	1179 uw_check_heap(ctx, strlen(s) * 4 + 2);
adamc@574	1180
adamc@666	1181 r = s2 = ctx->heap.front;
adamc@574	1182 *s2++ = '"';
adamc@574	1183
adamc@574	1184 for (; *s; s++) {
adamc@574	1185 char c = *s;
adamc@574	1186
adamc@574	1187 switch (c) {
adamc@574	1188 case '"':
adamc@574	1189 strcpy(s2, "\\\"");
adamc@574	1190 s2 += 2;
adamc@574	1191 break;
adamc@574	1192 case '\\':
adamc@574	1193 strcpy(s2, "\\\\");
adamc@574	1194 s2 += 2;
adamc@574	1195 break;
adamc@574	1196 default:
adamc@574	1197 if (isprint(c))
adamc@574	1198 *s2++ = c;
adamc@574	1199 else {
adamc@574	1200 sprintf(s2, "\\%3o", c);
adamc@574	1201 s2 += 4;
adamc@574	1202 }
adamc@574	1203 }
adamc@574	1204 }
adamc@574	1205
adamc@574	1206 strcpy(s2, "\"");
adamc@666	1207 ctx->heap.front = s2 + 1;
adamc@574	1208 return r;
adamc@574	1209 }
adamc@574	1210
adamc@574	1211 uw_Basis_string uw_Basis_jsifyString_ws(uw_context ctx, uw_Basis_string s) {
adamc@574	1212 char r, s2;
adamc@574	1213
adamc@574	1214 uw_check_script(ctx, strlen(s) * 4 + 2);
adamc@574	1215
adamc@666	1216 r = s2 = ctx->script.front;
adamc@574	1217 *s2++ = '"';
adamc@574	1218
adamc@574	1219 for (; *s; s++) {
adamc@574	1220 char c = *s;
adamc@574	1221
adamc@574	1222 switch (c) {
adamc@577	1223 case '\'':
adamc@574	1224 strcpy(s2, "\\\"");
adamc@574	1225 s2 += 2;
adamc@574	1226 break;
adamc@574	1227 case '\\':
adamc@574	1228 strcpy(s2, "\\\\");
adamc@574	1229 s2 += 2;
adamc@574	1230 break;
adamc@574	1231 default:
adamc@574	1232 if (isprint(c))
adamc@574	1233 *s2++ = c;
adamc@574	1234 else {
adamc@574	1235 sprintf(s2, "\\%3o", c);
adamc@574	1236 s2 += 4;
adamc@574	1237 }
adamc@574	1238 }
adamc@574	1239 }
adamc@574	1240
adamc@574	1241 strcpy(s2, "\"");
adamc@666	1242 ctx->script.front = s2 + 1;
adamc@574	1243 return r;
adamc@574	1244 }
adamc@574	1245
adamc@682	1246 char *uw_Basis_jsifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	1247 if (ctx->client == NULL \|\| chn.cli != ctx->client->id)
adamc@682	1248 return "null";
adamc@682	1249 else {
adamc@682	1250 int len;
adamc@682	1251 char *r;
adamc@682	1252
adamc@682	1253 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	1254 r = ctx->heap.front;
adamc@682	1255 sprintf(r, "%u%n", chn.chn, &len);
adamc@682	1256 ctx->heap.front += len+1;
adamc@682	1257 return r;
adamc@682	1258 }
adamc@682	1259 }
adamc@682	1260
adamc@577	1261 uw_Basis_int uw_Basis_new_client_source(uw_context ctx, uw_Basis_string s) {
adamc@577	1262 int len;
adamc@577	1263 size_t s_len = strlen(s);
adamc@562	1264
adamc@577	1265 uw_check_script(ctx, 12 + INTS_MAX + s_len);
adamc@666	1266 sprintf(ctx->script.front, "var s%d=sc(%n", ctx->source_count, &len);
adamc@666	1267 ctx->script.front += len;
adamc@666	1268 strcpy(ctx->script.front, s);
adamc@666	1269 ctx->script.front += s_len;
adamc@666	1270 strcpy(ctx->script.front, ");");
adamc@666	1271 ctx->script.front += 2;
adamc@562	1272
adamc@565	1273 return ctx->source_count++;
adamc@117	1274 }
adamc@117	1275
adamc@577	1276 uw_unit uw_Basis_set_client_source(uw_context ctx, uw_Basis_int n, uw_Basis_string s) {
adamc@577	1277 int len;
adamc@577	1278 size_t s_len = strlen(s);
adamc@577	1279
adamc@577	1280 uw_check_script(ctx, 6 + INTS_MAX + s_len);
adamc@666	1281 sprintf(ctx->script.front, "s%d.v=%n", (int)n, &len);
adamc@666	1282 ctx->script.front += len;
adamc@666	1283 strcpy(ctx->script.front, s);
adamc@666	1284 ctx->script.front += s_len;
adamc@666	1285 strcpy(ctx->script.front, ";");
adamc@666	1286 ctx->script.front++;
adamc@577	1287
adamc@577	1288 return uw_unit_v;
adamc@577	1289 }
adamc@577	1290
adamc@311	1291 static void uw_check(uw_context ctx, size_t extra) {
adamc@667	1292 buf_check(&ctx->page, extra);
adamc@117	1293 }
adamc@117	1294
adamc@311	1295 static void uw_writec_unsafe(uw_context ctx, char c) {
adamc@666	1296 *(ctx->page.front)++ = c;
adamc@117	1297 }
adamc@117	1298
adamc@311	1299 void uw_writec(uw_context ctx, char c) {
adamc@311	1300 uw_check(ctx, 1);
adamc@311	1301 uw_writec_unsafe(ctx, c);
adamc@117	1302 }
adamc@117	1303
adamc@311	1304 static void uw_write_unsafe(uw_context ctx, const char* s) {
adamc@117	1305 int len = strlen(s);
adamc@666	1306 memcpy(ctx->page.front, s, len);
adamc@666	1307 ctx->page.front += len;
adamc@117	1308 }
adamc@117	1309
adamc@311	1310 void uw_write(uw_context ctx, const char* s) {
adamc@311	1311 uw_check(ctx, strlen(s) + 1);
adamc@311	1312 uw_write_unsafe(ctx, s);
adamc@666	1313 *ctx->page.front = 0;
adamc@102	1314 }
adamc@106	1315
adamc@311	1316 char *uw_Basis_attrifyInt(uw_context ctx, uw_Basis_int n) {
adamc@136	1317 char *result;
adamc@136	1318 int len;
adamc@311	1319 uw_check_heap(ctx, INTS_MAX);
adamc@666	1320 result = ctx->heap.front;
adamc@276	1321 sprintf(result, "%lld%n", n, &len);
adamc@666	1322 ctx->heap.front += len+1;
adamc@136	1323 return result;
adamc@106	1324 }
adamc@106	1325
adamc@311	1326 char *uw_Basis_attrifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@136	1327 char *result;
adamc@136	1328 int len;
adamc@311	1329 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	1330 result = ctx->heap.front;
adamc@136	1331 sprintf(result, "%g%n", n, &len);
adamc@666	1332 ctx->heap.front += len+1;
adamc@136	1333 return result;
adamc@106	1334 }
adamc@106	1335
adamc@311	1336 char *uw_Basis_attrifyString(uw_context ctx, uw_Basis_string s) {
adamc@136	1337 int len = strlen(s);
adamc@136	1338 char result, p;
adamc@311	1339 uw_check_heap(ctx, len * 6 + 1);
adamc@136	1340
adamc@666	1341 result = p = ctx->heap.front;
adamc@136	1342
adamc@136	1343 for (; *s; s++) {
adamc@136	1344 char c = *s;
adamc@136	1345
adamc@136	1346 if (c == '"') {
adamc@136	1347 strcpy(p, """);
adamc@136	1348 p += 6;
adamc@136	1349 } else if (c == '&') {
adamc@136	1350 strcpy(p, "&");
adamc@136	1351 p += 5;
adamc@136	1352 }
adamc@136	1353 else if (isprint(c))
adamc@136	1354 *p++ = c;
adamc@136	1355 else {
adamc@136	1356 int len2;
adamc@136	1357 sprintf(p, "&#%d;%n", c, &len2);
adamc@136	1358 p += len2;
adamc@136	1359 }
adamc@136	1360 }
adamc@136	1361
adamc@137	1362 *p++ = 0;
adamc@666	1363 ctx->heap.front = p;
adamc@136	1364 return result;
adamc@106	1365 }
adamc@106	1366
adamc@721	1367 char *uw_Basis_attrifyCss_class(uw_context ctx, uw_Basis_css_class s) {
adamc@721	1368 return s;
adamc@721	1369 }
adamc@721	1370
adamc@311	1371 static void uw_Basis_attrifyInt_w_unsafe(uw_context ctx, uw_Basis_int n) {
adamc@117	1372 int len;
adamc@117	1373
adamc@666	1374 sprintf(ctx->page.front, "%lld%n", n, &len);
adamc@666	1375 ctx->page.front += len;
adamc@106	1376 }
adamc@106	1377
adamc@428	1378 uw_unit uw_Basis_attrifyInt_w(uw_context ctx, uw_Basis_int n) {
adamc@311	1379 uw_check(ctx, INTS_MAX);
adamc@311	1380 uw_Basis_attrifyInt_w_unsafe(ctx, n);
adamc@428	1381
adamc@428	1382 return uw_unit_v;
adamc@106	1383 }
adamc@106	1384
adamc@428	1385 uw_unit uw_Basis_attrifyFloat_w(uw_context ctx, uw_Basis_float n) {
adamc@117	1386 int len;
adamc@117	1387
adamc@311	1388 uw_check(ctx, FLOATS_MAX);
adamc@666	1389 sprintf(ctx->page.front, "%g%n", n, &len);
adamc@666	1390 ctx->page.front += len;
adamc@428	1391
adamc@428	1392 return uw_unit_v;
adamc@117	1393 }
adamc@117	1394
adamc@428	1395 uw_unit uw_Basis_attrifyString_w(uw_context ctx, uw_Basis_string s) {
adamc@311	1396 uw_check(ctx, strlen(s) * 6);
adamc@117	1397
adamc@106	1398 for (; *s; s++) {
adamc@106	1399 char c = *s;
adamc@106	1400
adamc@106	1401 if (c == '"')
adamc@311	1402 uw_write_unsafe(ctx, """);
adamc@136	1403 else if (c == '&')
adamc@311	1404 uw_write_unsafe(ctx, "&");
adamc@106	1405 else if (isprint(c))
adamc@311	1406 uw_writec_unsafe(ctx, c);
adamc@106	1407 else {
adamc@311	1408 uw_write_unsafe(ctx, "&#");
adamc@311	1409 uw_Basis_attrifyInt_w_unsafe(ctx, c);
adamc@311	1410 uw_writec_unsafe(ctx, ';');
adamc@106	1411 }
adamc@106	1412 }
adamc@428	1413
adamc@428	1414 return uw_unit_v;
adamc@106	1415 }
adamc@120	1416
adamc@120	1417
adamc@311	1418 char *uw_Basis_urlifyInt(uw_context ctx, uw_Basis_int n) {
adamc@137	1419 int len;
adamc@137	1420 char *r;
adamc@137	1421
adamc@311	1422 uw_check_heap(ctx, INTS_MAX);
adamc@666	1423 r = ctx->heap.front;
adamc@276	1424 sprintf(r, "%lld%n", n, &len);
adamc@666	1425 ctx->heap.front += len+1;
adamc@137	1426 return r;
adamc@120	1427 }
adamc@120	1428
adamc@682	1429 char *uw_Basis_urlifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	1430 if (ctx->client == NULL \|\| chn.cli != ctx->client->id)
adamc@682	1431 return "";
adamc@682	1432 else {
adamc@682	1433 int len;
adamc@682	1434 char *r;
adamc@679	1435
adamc@682	1436 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	1437 r = ctx->heap.front;
adamc@682	1438 sprintf(r, "%u%n", chn.chn, &len);
adamc@682	1439 ctx->heap.front += len+1;
adamc@682	1440 return r;
adamc@682	1441 }
adamc@679	1442 }
adamc@679	1443
adamc@311	1444 char *uw_Basis_urlifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@137	1445 int len;
adamc@137	1446 char *r;
adamc@137	1447
adamc@311	1448 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	1449 r = ctx->heap.front;
adamc@137	1450 sprintf(r, "%g%n", n, &len);
adamc@666	1451 ctx->heap.front += len+1;
adamc@137	1452 return r;
adamc@120	1453 }
adamc@120	1454
adamc@311	1455 char *uw_Basis_urlifyString(uw_context ctx, uw_Basis_string s) {
adamc@137	1456 char r, p;
adamc@137	1457
adamc@311	1458 uw_check_heap(ctx, strlen(s) * 3 + 1);
adamc@137	1459
adamc@666	1460 for (r = p = ctx->heap.front; *s; s++) {
adamc@137	1461 char c = *s;
adamc@137	1462
adamc@137	1463 if (c == ' ')
adamc@137	1464 *p++ = '+';
adamc@137	1465 else if (isalnum(c))
adamc@137	1466 *p++ = c;
adamc@137	1467 else {
adamc@137	1468 sprintf(p, "%%%02X", c);
adamc@137	1469 p += 3;
adamc@137	1470 }
adamc@137	1471 }
adamc@137	1472
adamc@137	1473 *p++ = 0;
adamc@666	1474 ctx->heap.front = p;
adamc@137	1475 return r;
adamc@120	1476 }
adamc@120	1477
adamc@311	1478 char *uw_Basis_urlifyBool(uw_context ctx, uw_Basis_bool b) {
adamc@311	1479 if (b == uw_Basis_False)
adamc@186	1480 return "0";
adamc@186	1481 else
adamc@186	1482 return "1";
adamc@186	1483 }
adamc@186	1484
adamc@311	1485 static void uw_Basis_urlifyInt_w_unsafe(uw_context ctx, uw_Basis_int n) {
adamc@120	1486 int len;
adamc@120	1487
adamc@666	1488 sprintf(ctx->page.front, "%lld%n", n, &len);
adamc@666	1489 ctx->page.front += len;
adamc@120	1490 }
adamc@120	1491
adamc@428	1492 uw_unit uw_Basis_urlifyInt_w(uw_context ctx, uw_Basis_int n) {
adamc@311	1493 uw_check(ctx, INTS_MAX);
adamc@311	1494 uw_Basis_urlifyInt_w_unsafe(ctx, n);
adamc@428	1495
adamc@428	1496 return uw_unit_v;
adamc@120	1497 }
adamc@120	1498
adamc@682	1499 uw_unit uw_Basis_urlifyChannel_w(uw_context ctx, uw_Basis_channel chn) {
adamc@682	1500 if (ctx->client != NULL && chn.cli == ctx->client->id) {
adamc@682	1501 int len;
adamc@682	1502
adamc@682	1503 uw_check(ctx, INTS_MAX + 1);
adamc@682	1504 sprintf(ctx->page.front, "%u%n", chn.chn, &len);
adamc@682	1505 ctx->page.front += len;
adamc@682	1506 }
adamc@682	1507
adamc@679	1508 return uw_unit_v;
adamc@679	1509 }
adamc@679	1510
adamc@428	1511 uw_unit uw_Basis_urlifyFloat_w(uw_context ctx, uw_Basis_float n) {
adamc@120	1512 int len;
adamc@120	1513
adamc@311	1514 uw_check(ctx, FLOATS_MAX);
adamc@666	1515 sprintf(ctx->page.front, "%g%n", n, &len);
adamc@666	1516 ctx->page.front += len;
adamc@428	1517
adamc@428	1518 return uw_unit_v;
adamc@120	1519 }
adamc@120	1520
adamc@488	1521 uw_Basis_string uw_Basis_urlifyTime(uw_context ctx, uw_Basis_time t) {
adamc@488	1522 return uw_Basis_urlifyInt(ctx, t);
adamc@488	1523 }
adamc@488	1524
adamc@428	1525 uw_unit uw_Basis_urlifyString_w(uw_context ctx, uw_Basis_string s) {
adamc@311	1526 uw_check(ctx, strlen(s) * 3);
adamc@120	1527
adamc@120	1528 for (; *s; s++) {
adamc@120	1529 char c = *s;
adamc@120	1530
adamc@120	1531 if (c == ' ')
adamc@311	1532 uw_writec_unsafe(ctx, '+');
adamc@120	1533 else if (isalnum(c))
adamc@311	1534 uw_writec_unsafe(ctx, c);
adamc@120	1535 else {
adamc@666	1536 sprintf(ctx->page.front, "%%%02X", c);
adamc@666	1537 ctx->page.front += 3;
adamc@120	1538 }
adamc@120	1539 }
adamc@428	1540
adamc@428	1541 return uw_unit_v;
adamc@120	1542 }
adamc@120	1543
adamc@428	1544 uw_unit uw_Basis_urlifyBool_w(uw_context ctx, uw_Basis_bool b) {
adamc@311	1545 if (b == uw_Basis_False)
adamc@311	1546 uw_writec(ctx, '0');
adamc@186	1547 else
adamc@311	1548 uw_writec(ctx, '1');
adamc@428	1549
adamc@428	1550 return uw_unit_v;
adamc@186	1551 }
adamc@186	1552
adamc@120	1553
adamc@311	1554 static char uw_unurlify_advance(char s) {
adamc@144	1555 char *new_s = strchr(s, '/');
adamc@120	1556
adamc@120	1557 if (new_s)
adamc@120	1558 *new_s++ = 0;
adamc@120	1559 else
adamc@144	1560 new_s = strchr(s, 0);
adamc@144	1561
adamc@144	1562 return new_s;
adamc@144	1563 }
adamc@144	1564
adamc@311	1565 uw_Basis_int uw_Basis_unurlifyInt(uw_context ctx, char **s) {
adamc@311	1566 char new_s = uw_unurlify_advance(s);
adamc@311	1567 uw_Basis_int r;
adamc@120	1568
adamc@276	1569 r = atoll(*s);
adamc@120	1570 *s = new_s;
adamc@120	1571 return r;
adamc@120	1572 }
adamc@120	1573
adamc@311	1574 uw_Basis_float uw_Basis_unurlifyFloat(uw_context ctx, char **s) {
adamc@311	1575 char new_s = uw_unurlify_advance(s);
adamc@311	1576 uw_Basis_float r;
adamc@120	1577
adamc@120	1578 r = atof(*s);
adamc@120	1579 *s = new_s;
adamc@120	1580 return r;
adamc@120	1581 }
adamc@120	1582
adamc@488	1583 uw_Basis_time uw_Basis_unurlifyTime(uw_context ctx, char **s) {
adamc@488	1584 return uw_Basis_unurlifyInt(ctx, s);
adamc@488	1585 }
adamc@488	1586
adamc@311	1587 static uw_Basis_string uw_unurlifyString_to(uw_context ctx, char r, char s) {
adamc@144	1588 char s1, s2;
adamc@144	1589 int n;
adamc@136	1590
adamc@144	1591 for (s1 = r, s2 = s; *s2; ++s1, ++s2) {
adamc@136	1592 char c = *s2;
adamc@136	1593
adamc@136	1594 switch (c) {
adamc@136	1595 case '+':
adamc@136	1596 *s1 = ' ';
adamc@136	1597 break;
adamc@136	1598 case '%':
adamc@169	1599 if (s2[1] == 0)
adamc@311	1600 uw_error(ctx, FATAL, "Missing first character of escaped URL byte");
adamc@169	1601 if (s2[2] == 0)
adamc@311	1602 uw_error(ctx, FATAL, "Missing second character of escaped URL byte");
adamc@169	1603 if (sscanf(s2+1, "%02X", &n) != 1)
adamc@311	1604 uw_error(ctx, FATAL, "Invalid escaped URL byte starting at: %s", s2);
adamc@136	1605 *s1 = n;
adamc@136	1606 s2 += 2;
adamc@136	1607 break;
adamc@136	1608 default:
adamc@136	1609 *s1 = c;
adamc@136	1610 }
adamc@136	1611 }
adamc@136	1612 *s1++ = 0;
adamc@144	1613 return s1;
adamc@144	1614 }
adamc@144	1615
adamc@311	1616 uw_Basis_bool uw_Basis_unurlifyBool(uw_context ctx, char **s) {
adamc@311	1617 char new_s = uw_unurlify_advance(s);
adamc@311	1618 uw_Basis_bool r;
adamc@186	1619
adamc@186	1620 if (s[0] == 0 \|\| !strcmp(s, "0") \|\| !strcmp(*s, "off"))
adamc@311	1621 r = uw_Basis_False;
adamc@186	1622 else
adamc@311	1623 r = uw_Basis_True;
adamc@186	1624
adamc@186	1625 *s = new_s;
adamc@186	1626 return r;
adamc@186	1627 }
adamc@186	1628
adamc@311	1629 uw_Basis_string uw_Basis_unurlifyString(uw_context ctx, char **s) {
adamc@311	1630 char new_s = uw_unurlify_advance(s);
adamc@144	1631 char r, s1, *s2;
adamc@144	1632 int len, n;
adamc@144	1633
adamc@200	1634 len = strlen(*s);
adamc@311	1635 uw_check_heap(ctx, len + 1);
adamc@144	1636
adamc@666	1637 r = ctx->heap.front;
adamc@666	1638 ctx->heap.front = uw_unurlifyString_to(ctx, ctx->heap.front, *s);
adamc@136	1639 *s = new_s;
adamc@136	1640 return r;
adamc@120	1641 }
adamc@135	1642
adamc@135	1643
adamc@311	1644 char *uw_Basis_htmlifyInt(uw_context ctx, uw_Basis_int n) {
adamc@286	1645 int len;
adamc@286	1646 char *r;
adamc@286	1647
adamc@311	1648 uw_check_heap(ctx, INTS_MAX);
adamc@666	1649 r = ctx->heap.front;
adamc@286	1650 sprintf(r, "%lld%n", n, &len);
adamc@666	1651 ctx->heap.front += len+1;
adamc@286	1652 return r;
adamc@286	1653 }
adamc@286	1654
adamc@428	1655 uw_unit uw_Basis_htmlifyInt_w(uw_context ctx, uw_Basis_int n) {
adamc@286	1656 int len;
adamc@286	1657
adamc@311	1658 uw_check(ctx, INTS_MAX);
adamc@666	1659 sprintf(ctx->page.front, "%lld%n", n, &len);
adamc@666	1660 ctx->page.front += len;
adamc@428	1661
adamc@428	1662 return uw_unit_v;
adamc@286	1663 }
adamc@286	1664
adamc@311	1665 char *uw_Basis_htmlifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@286	1666 int len;
adamc@286	1667 char *r;
adamc@286	1668
adamc@311	1669 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	1670 r = ctx->heap.front;
adamc@286	1671 sprintf(r, "%g%n", n, &len);
adamc@666	1672 ctx->heap.front += len+1;
adamc@286	1673 return r;
adamc@286	1674 }
adamc@286	1675
adamc@428	1676 uw_unit uw_Basis_htmlifyFloat_w(uw_context ctx, uw_Basis_float n) {
adamc@286	1677 int len;
adamc@286	1678
adamc@311	1679 uw_check(ctx, FLOATS_MAX);
adamc@666	1680 sprintf(ctx->page.front, "%g%n", n, &len);
adamc@666	1681 ctx->page.front += len;
adamc@428	1682
adamc@428	1683 return uw_unit_v;
adamc@286	1684 }
adamc@286	1685
adamc@311	1686 char *uw_Basis_htmlifyString(uw_context ctx, uw_Basis_string s) {
adamc@137	1687 char r, s2;
adamc@137	1688
adamc@311	1689 uw_check_heap(ctx, strlen(s) * 5 + 1);
adamc@137	1690
adamc@666	1691 for (r = s2 = ctx->heap.front; *s; s++) {
adamc@137	1692 char c = *s;
adamc@137	1693
adamc@137	1694 switch (c) {
adamc@137	1695 case '<':
adamc@137	1696 strcpy(s2, "<");
adamc@137	1697 s2 += 4;
adamc@137	1698 break;
adamc@137	1699 case '&':
adamc@137	1700 strcpy(s2, "&");
adamc@137	1701 s2 += 5;
adamc@137	1702 break;
adamc@137	1703 default:
adamc@137	1704 if (isprint(c))
adamc@137	1705 *s2++ = c;
adamc@137	1706 else {
adamc@137	1707 int len2;
adamc@137	1708 sprintf(s2, "&#%d;%n", c, &len2);
adamc@137	1709 s2 += len2;
adamc@137	1710 }
adamc@137	1711 }
adamc@137	1712 }
adamc@137	1713
adamc@137	1714 *s2++ = 0;
adamc@666	1715 ctx->heap.front = s2;
adamc@137	1716 return r;
adamc@135	1717 }
adamc@135	1718
adamc@428	1719 uw_unit uw_Basis_htmlifyString_w(uw_context ctx, uw_Basis_string s) {
adamc@321	1720 uw_check(ctx, strlen(s) * 6);
adamc@135	1721
adamc@135	1722 for (; *s; s++) {
adamc@135	1723 char c = *s;
adamc@135	1724
adamc@135	1725 switch (c) {
adamc@135	1726 case '<':
adamc@311	1727 uw_write_unsafe(ctx, "<");
adamc@135	1728 break;
adamc@135	1729 case '&':
adamc@311	1730 uw_write_unsafe(ctx, "&");
adamc@135	1731 break;
adamc@135	1732 default:
adamc@135	1733 if (isprint(c))
adamc@311	1734 uw_writec_unsafe(ctx, c);
adamc@135	1735 else {
adamc@311	1736 uw_write_unsafe(ctx, "&#");
adamc@311	1737 uw_Basis_attrifyInt_w_unsafe(ctx, c);
adamc@311	1738 uw_writec_unsafe(ctx, ';');
adamc@135	1739 }
adamc@135	1740 }
adamc@135	1741 }
adamc@428	1742
adamc@428	1743 return uw_unit_v;
adamc@135	1744 }
adamc@180	1745
adamc@311	1746 uw_Basis_string uw_Basis_htmlifyBool(uw_context ctx, uw_Basis_bool b) {
adamc@311	1747 if (b == uw_Basis_False)
adamc@286	1748 return "False";
adamc@286	1749 else
adamc@286	1750 return "True";
adamc@286	1751 }
adamc@286	1752
adamc@428	1753 uw_unit uw_Basis_htmlifyBool_w(uw_context ctx, uw_Basis_bool b) {
adamc@311	1754 if (b == uw_Basis_False) {
adamc@311	1755 uw_check(ctx, 6);
adamc@666	1756 strcpy(ctx->page.front, "False");
adamc@666	1757 ctx->page.front += 5;
adamc@286	1758 } else {
adamc@311	1759 uw_check(ctx, 5);
adamc@666	1760 strcpy(ctx->page.front, "True");
adamc@666	1761 ctx->page.front += 4;
adamc@286	1762 }
adamc@428	1763
adamc@428	1764 return uw_unit_v;
adamc@286	1765 }
adamc@286	1766
adamc@436	1767 #define TIME_FMT "%x %X"
adamc@438	1768 #define TIME_FMT_PG "%Y-%m-%d %T"
adamc@436	1769
adamc@436	1770 uw_Basis_string uw_Basis_htmlifyTime(uw_context ctx, uw_Basis_time t) {
adamc@436	1771 size_t len;
adamc@436	1772 char *r;
adamc@436	1773 struct tm stm;
adamc@436	1774
adamc@436	1775 if (localtime_r(&t, &stm)) {
adamc@436	1776 uw_check_heap(ctx, TIMES_MAX);
adamc@666	1777 r = ctx->heap.front;
adamc@436	1778 len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
adamc@666	1779 ctx->heap.front += len+1;
adamc@436	1780 return r;
adamc@436	1781 } else
adamc@436	1782 return "<i>Invalid time</i>";
adamc@436	1783 }
adamc@436	1784
adamc@436	1785 uw_unit uw_Basis_htmlifyTime_w(uw_context ctx, uw_Basis_time t) {
adamc@436	1786 size_t len;
adamc@436	1787 char *r;
adamc@436	1788 struct tm stm;
adamc@436	1789
adamc@436	1790 if (localtime_r(&t, &stm)) {
adamc@436	1791 uw_check(ctx, TIMES_MAX);
adamc@666	1792 r = ctx->page.front;
adamc@436	1793 len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
adamc@666	1794 ctx->page.front += len;
adamc@436	1795 } else {
adamc@436	1796 uw_check(ctx, 20);
adamc@666	1797 strcpy(ctx->page.front, "<i>Invalid time</i>");
adamc@666	1798 ctx->page.front += 19;
adamc@436	1799 }
adamc@436	1800
adamc@436	1801 return uw_unit_v;
adamc@436	1802 }
adamc@436	1803
adamc@821	1804 uw_Basis_char uw_Basis_strsub(uw_context ctx, uw_Basis_string s, uw_Basis_int n) {
adamc@821	1805 if (n >= 0 && n < strlen(s))
adamc@821	1806 return s[n];
adamc@821	1807 else
adamc@821	1808 uw_error(ctx, FATAL, "Out-of-bounds strsub");
adamc@821	1809 }
adamc@821	1810
adamc@821	1811 uw_Basis_string uw_Basis_strsuffix(uw_context ctx, uw_Basis_string s, uw_Basis_int n) {
adamc@821	1812 if (n >= 0 && n < strlen(s))
adamc@821	1813 return &s[n];
adamc@821	1814 else
adamc@821	1815 uw_error(ctx, FATAL, "Out-of-bounds strsuffix");
adamc@821	1816 }
adamc@821	1817
adamc@828	1818 uw_Basis_int uw_Basis_strlen(uw_context ctx, uw_Basis_string s) {
adamc@828	1819 return strlen(s);
adamc@828	1820 }
adamc@828	1821
adamc@829	1822 uw_Basis_string uw_Basis_strchr(uw_context ctx, uw_Basis_string s, uw_Basis_char ch) {
adamc@829	1823 return strchr(s, ch);
adamc@829	1824 }
adamc@829	1825
adamc@831	1826 uw_Basis_int uw_Basis_strcspn(uw_context ctx, uw_Basis_string s, uw_Basis_string chs) {
adamc@831	1827 return strcspn(s, chs);
adamc@831	1828 }
adamc@831	1829
adamc@829	1830 uw_Basis_int *uw_Basis_strindex(uw_context ctx, uw_Basis_string s, uw_Basis_char ch) {
adamc@829	1831 uw_Basis_string r = strchr(s, ch);
adamc@829	1832 if (r == NULL)
adamc@829	1833 return NULL;
adamc@829	1834 else {
adamc@829	1835 uw_Basis_int *nr = uw_malloc(ctx, sizeof(uw_Basis_int));
adamc@829	1836 *nr = r - s;
adamc@829	1837 return nr;
adamc@829	1838 }
adamc@829	1839 }
adamc@829	1840
adamc@311	1841 uw_Basis_string uw_Basis_strcat(uw_context ctx, uw_Basis_string s1, uw_Basis_string s2) {
adamc@828	1842 int len = uw_Basis_strlen(ctx, s1) + uw_Basis_strlen(ctx, s2) + 1;
adamc@180	1843 char *s;
adamc@180	1844
adamc@311	1845 uw_check_heap(ctx, len);
adamc@180	1846
adamc@666	1847 s = ctx->heap.front;
adamc@180	1848
adamc@180	1849 strcpy(s, s1);
adamc@180	1850 strcat(s, s2);
adamc@666	1851 ctx->heap.front += len;
adamc@180	1852
adamc@180	1853 return s;
adamc@180	1854 }
adamc@278	1855
adamc@829	1856 uw_Basis_string uw_Basis_substring(uw_context ctx, uw_Basis_string s, uw_Basis_int start, uw_Basis_int len) {
adamc@829	1857 size_t full_len = uw_Basis_strlen(ctx, s);
adamc@829	1858
adamc@829	1859 if (start < 0)
adamc@829	1860 uw_error(ctx, FATAL, "substring: Negative start index");
adamc@829	1861 if (len < 0)
adamc@829	1862 uw_error(ctx, FATAL, "substring: Negative length");
adamc@829	1863 if (start + len > full_len)
adamc@829	1864 uw_error(ctx, FATAL, "substring: Start index plus length is too large");
adamc@829	1865
adamc@829	1866 if (start + len == full_len)
adamc@829	1867 return &s[start];
adamc@829	1868 else {
adamc@829	1869 uw_Basis_string r = uw_malloc(ctx, len+1);
adamc@829	1870 memcpy(r, s, len);
adamc@829	1871 r[len] = 0;
adamc@829	1872 return r;
adamc@829	1873 }
adamc@829	1874
adamc@829	1875 }
adamc@829	1876
adamc@737	1877 uw_Basis_string uw_strdup(uw_context ctx, uw_Basis_string s1) {
adamc@828	1878 int len = uw_Basis_strlen(ctx, s1) + 1;
adamc@278	1879 char *s;
adamc@278	1880
adamc@311	1881 uw_check_heap(ctx, len);
adamc@278	1882
adamc@666	1883 s = ctx->heap.front;
adamc@278	1884
adamc@278	1885 strcpy(s, s1);
adamc@666	1886 ctx->heap.front += len;
adamc@278	1887
adamc@278	1888 return s;
adamc@278	1889 }
adamc@280	1890
adamc@737	1891 uw_Basis_string uw_maybe_strdup(uw_context ctx, uw_Basis_string s1) {
adamc@493	1892 if (s1)
adamc@737	1893 return uw_strdup(ctx, s1);
adamc@493	1894 else
adamc@493	1895 return NULL;
adamc@493	1896 }
adamc@493	1897
adamc@742	1898 char uw_memdup(uw_context ctx, const char p, size_t len) {
adamc@742	1899 char *r = uw_malloc(ctx, len);
adamc@742	1900 memcpy(r, p, len);
adamc@742	1901 return r;
adamc@742	1902 }
adamc@280	1903
adamc@311	1904 char *uw_Basis_sqlifyInt(uw_context ctx, uw_Basis_int n) {
adamc@281	1905 int len;
adamc@281	1906 char *r;
adamc@281	1907
adamc@311	1908 uw_check_heap(ctx, INTS_MAX + 6);
adamc@666	1909 r = ctx->heap.front;
adamc@281	1910 sprintf(r, "%lld::int8%n", n, &len);
adamc@666	1911 ctx->heap.front += len+1;
adamc@281	1912 return r;
adamc@281	1913 }
adamc@281	1914
adamc@467	1915 char uw_Basis_sqlifyIntN(uw_context ctx, uw_Basis_int n) {
adamc@467	1916 if (n == NULL)
adamc@467	1917 return "NULL";
adamc@467	1918 else
adamc@467	1919 return uw_Basis_sqlifyInt(ctx, *n);
adamc@467	1920 }
adamc@467	1921
adamc@311	1922 char *uw_Basis_sqlifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@281	1923 int len;
adamc@281	1924 char *r;
adamc@281	1925
adamc@311	1926 uw_check_heap(ctx, FLOATS_MAX + 8);
adamc@666	1927 r = ctx->heap.front;
adamc@281	1928 sprintf(r, "%g::float8%n", n, &len);
adamc@666	1929 ctx->heap.front += len+1;
adamc@281	1930 return r;
adamc@281	1931 }
adamc@281	1932
adamc@467	1933 char uw_Basis_sqlifyFloatN(uw_context ctx, uw_Basis_float n) {
adamc@467	1934 if (n == NULL)
adamc@467	1935 return "NULL";
adamc@467	1936 else
adamc@467	1937 return uw_Basis_sqlifyFloat(ctx, *n);
adamc@467	1938 }
adamc@467	1939
adamc@281	1940
adamc@311	1941 uw_Basis_string uw_Basis_sqlifyString(uw_context ctx, uw_Basis_string s) {
adamc@280	1942 char r, s2;
adamc@280	1943
adamc@311	1944 uw_check_heap(ctx, strlen(s) * 2 + 10);
adamc@280	1945
adamc@666	1946 r = s2 = ctx->heap.front;
adamc@280	1947 *s2++ = 'E';
adamc@280	1948 *s2++ = '\'';
adamc@280	1949
adamc@280	1950 for (; *s; s++) {
adamc@280	1951 char c = *s;
adamc@280	1952
adamc@280	1953 switch (c) {
adamc@280	1954 case '\'':
adamc@280	1955 strcpy(s2, "\\'");
adamc@280	1956 s2 += 2;
adamc@280	1957 break;
adamc@280	1958 case '\\':
adamc@280	1959 strcpy(s2, "\\\\");
adamc@280	1960 s2 += 2;
adamc@280	1961 break;
adamc@280	1962 default:
adamc@280	1963 if (isprint(c))
adamc@280	1964 *s2++ = c;
adamc@280	1965 else {
adamc@737	1966 sprintf(s2, "\\%03o", c);
adamc@280	1967 s2 += 4;
adamc@280	1968 }
adamc@280	1969 }
adamc@280	1970 }
adamc@280	1971
adamc@281	1972 strcpy(s2, "'::text");
adamc@666	1973 ctx->heap.front = s2 + 8;
adamc@280	1974 return r;
adamc@280	1975 }
adamc@281	1976
adamc@737	1977 uw_Basis_string uw_Basis_sqlifyBlob(uw_context ctx, uw_Basis_blob b) {
adamc@737	1978 char r, s2;
adamc@737	1979 size_t i;
adamc@737	1980
adamc@737	1981 uw_check_heap(ctx, b.size * 5 + 11);
adamc@737	1982
adamc@737	1983 r = s2 = ctx->heap.front;
adamc@737	1984 *s2++ = 'E';
adamc@737	1985 *s2++ = '\'';
adamc@737	1986
adamc@737	1987 for (i = 0; i < b.size; ++i) {
adamc@737	1988 char c = b.data[i];
adamc@737	1989
adamc@737	1990 switch (c) {
adamc@737	1991 case '\'':
adamc@737	1992 strcpy(s2, "\\'");
adamc@737	1993 s2 += 2;
adamc@737	1994 break;
adamc@737	1995 case '\\':
adamc@737	1996 strcpy(s2, "\\\\\\\\");
adamc@737	1997 s2 += 4;
adamc@737	1998 break;
adamc@737	1999 default:
adamc@737	2000 if (isprint(c))
adamc@737	2001 *s2++ = c;
adamc@737	2002 else {
adamc@737	2003 sprintf(s2, "\\\\%03o", c);
adamc@737	2004 s2 += 5;
adamc@737	2005 }
adamc@737	2006 }
adamc@737	2007 }
adamc@737	2008
adamc@737	2009 strcpy(s2, "'::bytea");
adamc@737	2010 ctx->heap.front = s2 + 9;
adamc@737	2011 return r;
adamc@737	2012 }
adamc@737	2013
adamc@682	2014 char *uw_Basis_sqlifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	2015 int len;
adamc@682	2016 char *r;
adamc@682	2017 unsigned long long combo = ((unsigned long long)chn.cli << 32) \| chn.chn;
adamc@682	2018
adamc@682	2019 uw_check_heap(ctx, INTS_MAX + 7);
adamc@682	2020 r = ctx->heap.front;
adamc@682	2021 sprintf(r, "%lld::int8%n", combo, &len);
adamc@682	2022 ctx->heap.front += len+1;
adamc@682	2023 return r;
adamc@682	2024 }
adamc@682	2025
adamc@682	2026 char *uw_Basis_attrifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	2027 int len;
adamc@682	2028 char *r;
adamc@682	2029 unsigned long long combo = ((unsigned long long)chn.cli << 32) \| chn.chn;
adamc@682	2030
adamc@682	2031 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	2032 r = ctx->heap.front;
adamc@682	2033 sprintf(r, "%lld%n", combo, &len);
adamc@682	2034 ctx->heap.front += len+1;
adamc@682	2035 return r;
adamc@682	2036 }
adamc@682	2037
adamc@682	2038 char *uw_Basis_sqlifyClient(uw_context ctx, uw_Basis_client cli) {
adamc@682	2039 int len;
adamc@682	2040 char *r;
adamc@682	2041
adamc@682	2042 uw_check_heap(ctx, INTS_MAX + 7);
adamc@682	2043 r = ctx->heap.front;
adamc@682	2044 sprintf(r, "%u::int4%n", cli, &len);
adamc@682	2045 ctx->heap.front += len+1;
adamc@682	2046 return r;
adamc@682	2047 }
adamc@682	2048
adamc@682	2049 char *uw_Basis_attrifyClient(uw_context ctx, uw_Basis_client cli) {
adamc@682	2050 int len;
adamc@682	2051 char *r;
adamc@682	2052
adamc@682	2053 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	2054 r = ctx->heap.front;
adamc@682	2055 sprintf(r, "%u%n", cli, &len);
adamc@682	2056 ctx->heap.front += len+1;
adamc@682	2057 return r;
adamc@682	2058 }
adamc@682	2059
adamc@467	2060 uw_Basis_string uw_Basis_sqlifyStringN(uw_context ctx, uw_Basis_string s) {
adamc@467	2061 if (s == NULL)
adamc@467	2062 return "NULL";
adamc@467	2063 else
adamc@467	2064 return uw_Basis_sqlifyString(ctx, s);
adamc@467	2065 }
adamc@467	2066
adamc@311	2067 char *uw_Basis_sqlifyBool(uw_context ctx, uw_Basis_bool b) {
adamc@311	2068 if (b == uw_Basis_False)
adamc@281	2069 return "FALSE";
adamc@281	2070 else
adamc@281	2071 return "TRUE";
adamc@281	2072 }
adamc@282	2073
adamc@467	2074 char uw_Basis_sqlifyBoolN(uw_context ctx, uw_Basis_bool b) {
adamc@467	2075 if (b == NULL)
adamc@467	2076 return "NULL";
adamc@467	2077 else
adamc@467	2078 return uw_Basis_sqlifyBool(ctx, *b);
adamc@467	2079 }
adamc@467	2080
adamc@439	2081 char *uw_Basis_sqlifyTime(uw_context ctx, uw_Basis_time t) {
adamc@439	2082 size_t len;
adamc@682	2083 char r, s;
adamc@682	2084 struct tm stm;
adamc@682	2085
adamc@682	2086 if (localtime_r(&t, &stm)) {
adamc@682	2087 s = uw_malloc(ctx, TIMES_MAX);
adamc@682	2088 len = strftime(s, TIMES_MAX, TIME_FMT, &stm);
adamc@682	2089 r = uw_malloc(ctx, len + 14);
adamc@682	2090 sprintf(r, "'%s'::timestamp", s);
adamc@682	2091 return r;
adamc@682	2092 } else
adamc@682	2093 return "<Invalid time>";
adamc@682	2094 }
adamc@682	2095
adamc@682	2096 char *uw_Basis_attrifyTime(uw_context ctx, uw_Basis_time t) {
adamc@682	2097 size_t len;
adamc@439	2098 char *r;
adamc@439	2099 struct tm stm;
adamc@439	2100
adamc@439	2101 if (localtime_r(&t, &stm)) {
adamc@439	2102 uw_check_heap(ctx, TIMES_MAX);
adamc@666	2103 r = ctx->heap.front;
adamc@439	2104 len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
adamc@666	2105 ctx->heap.front += len+1;
adamc@439	2106 return r;
adamc@439	2107 } else
adamc@439	2108 return "<Invalid time>";
adamc@439	2109 }
adamc@439	2110
adamc@467	2111 char uw_Basis_sqlifyTimeN(uw_context ctx, uw_Basis_time t) {
adamc@467	2112 if (t == NULL)
adamc@467	2113 return "NULL";
adamc@467	2114 else
adamc@467	2115 return uw_Basis_sqlifyTime(ctx, *t);
adamc@467	2116 }
adamc@467	2117
adamc@311	2118 char *uw_Basis_ensqlBool(uw_Basis_bool b) {
adamc@311	2119 static uw_Basis_int true = 1;
adamc@311	2120 static uw_Basis_int false = 0;
adamc@282	2121
adamc@311	2122 if (b == uw_Basis_False)
adamc@282	2123 return (char *)&false;
adamc@282	2124 else
adamc@282	2125 return (char *)&true;
adamc@282	2126 }
adamc@284	2127
adamc@311	2128 uw_Basis_string uw_Basis_intToString(uw_context ctx, uw_Basis_int n) {
adamc@284	2129 int len;
adamc@284	2130 char *r;
adamc@284	2131
adamc@311	2132 uw_check_heap(ctx, INTS_MAX);
adamc@666	2133 r = ctx->heap.front;
adamc@284	2134 sprintf(r, "%lld%n", n, &len);
adamc@666	2135 ctx->heap.front += len+1;
adamc@284	2136 return r;
adamc@284	2137 }
adamc@285	2138
adamc@311	2139 uw_Basis_string uw_Basis_floatToString(uw_context ctx, uw_Basis_float n) {
adamc@285	2140 int len;
adamc@285	2141 char *r;
adamc@285	2142
adamc@311	2143 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	2144 r = ctx->heap.front;
adamc@285	2145 sprintf(r, "%g%n", n, &len);
adamc@666	2146 ctx->heap.front += len+1;
adamc@285	2147 return r;
adamc@285	2148 }
adamc@285	2149
adamc@821	2150 uw_Basis_string uw_Basis_charToString(uw_context ctx, uw_Basis_char ch) {
adamc@821	2151 char *r = uw_malloc(ctx, 2);
adamc@821	2152 r[0] = ch;
adamc@821	2153 r[1] = 0;
adamc@821	2154 return r;
adamc@821	2155 }
adamc@821	2156
adamc@311	2157 uw_Basis_string uw_Basis_boolToString(uw_context ctx, uw_Basis_bool b) {
adamc@311	2158 if (b == uw_Basis_False)
adamc@285	2159 return "False";
adamc@285	2160 else
adamc@285	2161 return "True";
adamc@285	2162 }
adamc@288	2163
adamc@436	2164 uw_Basis_string uw_Basis_timeToString(uw_context ctx, uw_Basis_time t) {
adamc@436	2165 size_t len;
adamc@436	2166 char *r;
adamc@436	2167 struct tm stm;
adamc@436	2168
adamc@436	2169 if (localtime_r(&t, &stm)) {
adamc@436	2170 uw_check_heap(ctx, TIMES_MAX);
adamc@666	2171 r = ctx->heap.front;
adamc@436	2172 len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
adamc@666	2173 ctx->heap.front += len+1;
adamc@436	2174 return r;
adamc@436	2175 } else
adamc@436	2176 return "<Invalid time>";
adamc@436	2177 }
adamc@288	2178
adamc@311	2179 uw_Basis_int *uw_Basis_stringToInt(uw_context ctx, uw_Basis_string s) {
adamc@288	2180 char *endptr;
adamc@311	2181 uw_Basis_int n = strtoll(s, &endptr, 10);
adamc@288	2182
adamc@288	2183 if (s != '\0' && endptr == '\0') {
adamc@311	2184 uw_Basis_int *r = uw_malloc(ctx, sizeof(uw_Basis_int));
adamc@288	2185 *r = n;
adamc@288	2186 return r;
adamc@288	2187 } else
adamc@288	2188 return NULL;
adamc@288	2189 }
adamc@289	2190
adamc@311	2191 uw_Basis_float *uw_Basis_stringToFloat(uw_context ctx, uw_Basis_string s) {
adamc@289	2192 char *endptr;
adamc@311	2193 uw_Basis_float n = strtod(s, &endptr);
adamc@289	2194
adamc@289	2195 if (s != '\0' && endptr == '\0') {
adamc@311	2196 uw_Basis_float *r = uw_malloc(ctx, sizeof(uw_Basis_float));
adamc@289	2197 *r = n;
adamc@289	2198 return r;
adamc@289	2199 } else
adamc@289	2200 return NULL;
adamc@289	2201 }
adamc@289	2202
adamc@821	2203 uw_Basis_char *uw_Basis_stringToChar(uw_context ctx, uw_Basis_string s) {
adamc@821	2204 if (s[0] == 0) {
adamc@821	2205 uw_Basis_char *r = uw_malloc(ctx, 1);
adamc@821	2206 r[0] = 0;
adamc@821	2207 return r;
adamc@821	2208 } else if (s[1] != 0)
adamc@821	2209 return NULL;
adamc@821	2210 else {
adamc@821	2211 uw_Basis_char *r = uw_malloc(ctx, 1);
adamc@821	2212 r[0] = s[0];
adamc@821	2213 return r;
adamc@821	2214 }
adamc@821	2215 }
adamc@821	2216
adamc@311	2217 uw_Basis_bool *uw_Basis_stringToBool(uw_context ctx, uw_Basis_string s) {
adamc@311	2218 static uw_Basis_bool true = uw_Basis_True;
adamc@311	2219 static uw_Basis_bool false = uw_Basis_False;
adamc@289	2220
adamc@289	2221 if (!strcasecmp (s, "True"))
adamc@289	2222 return &true;
adamc@289	2223 else if (!strcasecmp (s, "False"))
adamc@289	2224 return &false;
adamc@289	2225 else
adamc@289	2226 return NULL;
adamc@289	2227 }
adamc@292	2228
adamc@436	2229 uw_Basis_time *uw_Basis_stringToTime(uw_context ctx, uw_Basis_string s) {
adamc@438	2230 char dot = strchr(s, '.'), end = strchr(s, 0);
adamc@436	2231 struct tm stm;
adamc@436	2232
adamc@439	2233 if (dot) {
adamc@439	2234 *dot = 0;
adamc@439	2235 if (strptime(s, TIME_FMT_PG, &stm) == end) {
adamc@439	2236 *dot = '.';
adamc@439	2237 uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
adamc@439	2238 *r = mktime(&stm);
adamc@439	2239 return r;
adamc@439	2240 }
adamc@439	2241 else {
adamc@439	2242 *dot = '.';
adamc@439	2243 return NULL;
adamc@439	2244 }
adamc@436	2245 }
adamc@439	2246 else {
adamc@439	2247 if (strptime(s, TIME_FMT_PG, &stm) == end) {
adamc@439	2248 uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
adamc@439	2249 *r = mktime(&stm);
adamc@439	2250 return r;
adamc@439	2251 }
adamc@439	2252 else if (strptime(s, TIME_FMT, &stm) == end) {
adamc@439	2253 uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
adamc@439	2254 *r = mktime(&stm);
adamc@439	2255 return r;
adamc@439	2256 }
adamc@439	2257 else
adamc@439	2258 return NULL;
adamc@439	2259 }
adamc@436	2260 }
adamc@436	2261
adamc@311	2262 uw_Basis_int uw_Basis_stringToInt_error(uw_context ctx, uw_Basis_string s) {
adamc@292	2263 char *endptr;
adamc@311	2264 uw_Basis_int n = strtoll(s, &endptr, 10);
adamc@292	2265
adamc@292	2266 if (s != '\0' && endptr == '\0')
adamc@292	2267 return n;
adamc@292	2268 else
adamc@311	2269 uw_error(ctx, FATAL, "Can't parse int: %s", s);
adamc@292	2270 }
adamc@293	2271
adamc@682	2272 #include <errno.h>
adamc@682	2273
adamc@678	2274 uw_Basis_channel uw_Basis_stringToChannel_error(uw_context ctx, uw_Basis_string s) {
adamc@682	2275 unsigned long long n;
adamc@682	2276
adamc@682	2277 if (sscanf(s, "%llu", &n) < 1)
adamc@682	2278 uw_error(ctx, FATAL, "Can't parse channel: %s", s);
adamc@682	2279 else {
adamc@682	2280 uw_Basis_channel ch = {n >> 32, n & ((1ull << 32) - 1)};
adamc@682	2281 return ch;
adamc@682	2282 }
adamc@682	2283 }
adamc@682	2284
adamc@682	2285 uw_Basis_client uw_Basis_stringToClient_error(uw_context ctx, uw_Basis_string s) {
adamc@678	2286 char *endptr;
adamc@682	2287 unsigned long n = strtoul(s, &endptr, 10);
adamc@678	2288
adamc@678	2289 if (s != '\0' && endptr == '\0')
adamc@678	2290 return n;
adamc@678	2291 else
adamc@682	2292 uw_error(ctx, FATAL, "Can't parse client: %s", s);
adamc@678	2293 }
adamc@678	2294
adamc@311	2295 uw_Basis_float uw_Basis_stringToFloat_error(uw_context ctx, uw_Basis_string s) {
adamc@293	2296 char *endptr;
adamc@311	2297 uw_Basis_float n = strtod(s, &endptr);
adamc@293	2298
adamc@293	2299 if (s != '\0' && endptr == '\0')
adamc@293	2300 return n;
adamc@293	2301 else
adamc@311	2302 uw_error(ctx, FATAL, "Can't parse float: %s", s);
adamc@293	2303 }
adamc@293	2304
adamc@821	2305 uw_Basis_char uw_Basis_stringToChar_error(uw_context ctx, uw_Basis_string s) {
adamc@821	2306 if (s[0] == 0)
adamc@821	2307 return 0;
adamc@821	2308 else if (s[1] != 0)
adamc@821	2309 uw_error(ctx, FATAL, "Can't parse char: %s", s);
adamc@821	2310 else
adamc@821	2311 return s[0];
adamc@821	2312 }
adamc@821	2313
adamc@311	2314 uw_Basis_bool uw_Basis_stringToBool_error(uw_context ctx, uw_Basis_string s) {
adamc@296	2315 if (!strcasecmp(s, "T") \|\| !strcasecmp (s, "True"))
adamc@311	2316 return uw_Basis_True;
adamc@296	2317 else if (!strcasecmp(s, "F") \|\| !strcasecmp (s, "False"))
adamc@311	2318 return uw_Basis_False;
adamc@293	2319 else
adamc@311	2320 uw_error(ctx, FATAL, "Can't parse bool: %s", s);
adamc@293	2321 }
adamc@436	2322
adamc@436	2323 uw_Basis_time uw_Basis_stringToTime_error(uw_context ctx, uw_Basis_string s) {
adamc@438	2324 char dot = strchr(s, '.'), end = strchr(s, 0);
adamc@436	2325 struct tm stm = {};
adamc@436	2326
adamc@438	2327 if (dot) {
adamc@438	2328 *dot = 0;
adamc@438	2329 if (strptime(s, TIME_FMT_PG, &stm)) {
adamc@438	2330 *dot = '.';
adamc@438	2331 return mktime(&stm);
adamc@438	2332 }
adamc@438	2333 else {
adamc@438	2334 *dot = '.';
adamc@438	2335 uw_error(ctx, FATAL, "Can't parse time: %s", s);
adamc@438	2336 }
adamc@438	2337 }
adamc@438	2338 else {
adamc@439	2339 if (strptime(s, TIME_FMT_PG, &stm) == end)
adamc@439	2340 return mktime(&stm);
adamc@439	2341 else if (strptime(s, TIME_FMT, &stm) == end)
adamc@438	2342 return mktime(&stm);
adamc@438	2343 else
adamc@438	2344 uw_error(ctx, FATAL, "Can't parse time: %s", s);
adamc@438	2345 }
adamc@436	2346 }
adamc@457	2347
adamc@742	2348 uw_Basis_blob uw_Basis_stringToBlob_error(uw_context ctx, uw_Basis_string s, size_t len) {
adamc@742	2349 char *r = ctx->heap.front;
adamc@742	2350 uw_Basis_blob b = {len, r};
adamc@742	2351
adamc@742	2352 uw_check_heap(ctx, len);
adamc@742	2353
adamc@742	2354 while (*s) {
adamc@742	2355 if (s[0] == '\\') {
adamc@742	2356 if (s[1] == '\\') {
adamc@742	2357 *r++ = '\\';
adamc@742	2358 s += 2;
adamc@742	2359 } else if (isdigit(s[1]) && isdigit(s[2]) && isdigit(s[3])) {
adamc@742	2360 r++ = (s[1] - '0') 8 * 8 + ((s[2] - '0') * 8) + (s[3] - '0');
adamc@742	2361 s += 4;
adamc@742	2362 }
adamc@742	2363 else {
adamc@742	2364 *r++ = '\\';
adamc@742	2365 ++s;
adamc@742	2366 }
adamc@742	2367 } else {
adamc@742	2368 *r++ = s[0];
adamc@742	2369 ++s;
adamc@742	2370 }
adamc@742	2371 }
adamc@742	2372
adamc@742	2373 b.size = r - ctx->heap.front;
adamc@742	2374 ctx->heap.front = r;
adamc@742	2375 return b;
adamc@742	2376 }
adamc@742	2377
adamc@463	2378 uw_Basis_string uw_Basis_get_cookie(uw_context ctx, uw_Basis_string c) {
adamc@463	2379 int len = strlen(c);
adamc@666	2380 char s = ctx->headers, p = ctx->outHeaders.start;
adamc@474	2381
adamc@474	2382 while (p = strstr(p, "\nSet-Cookie: ")) {
adamc@474	2383 char *p2;
adamc@474	2384 p += 13;
adamc@474	2385 p2 = strchr(p, '=');
adamc@474	2386
adamc@474	2387 if (p2) {
adamc@474	2388 size_t sz = strcspn(p2+1, ";\r\n");
adamc@474	2389
adamc@474	2390 if (!strncasecmp(p, c, p2 - p)) {
adamc@474	2391 char *ret = uw_malloc(ctx, sz + 1);
adamc@474	2392 memcpy(ret, p2+1, sz);
adamc@474	2393 ret[sz] = 0;
adamc@474	2394 return ret;
adamc@474	2395 }
adamc@474	2396 }
adamc@474	2397 }
adamc@463	2398
adamc@463	2399 while (p = strchr(s, ':')) {
adamc@476	2400 if (!strncasecmp(s, "Cookie: ", 8)) {
adamc@476	2401 p += 2;
adamc@476	2402 while (1) {
adamc@476	2403 if (!strncmp(p, c, len)
adamc@476	2404 && p + len < ctx->headers_end && p[len] == '=')
adamc@476	2405 return p + 1 + len;
adamc@476	2406 else if (p = strchr(p, ';'))
adamc@476	2407 p += 2;
adamc@476	2408 else if ((s = strchr(s, 0)) && s < ctx->headers_end) {
adamc@476	2409 s += 2;
adamc@476	2410 break;
adamc@476	2411 }
adamc@476	2412 else
adamc@476	2413 return NULL;
adamc@476	2414 }
adamc@463	2415 } else {
adamc@463	2416 if ((s = strchr(p, 0)) && s < ctx->headers_end)
adamc@463	2417 s += 2;
adamc@463	2418 else
adamc@463	2419 return NULL;
adamc@463	2420 }
adamc@463	2421 }
adamc@792	2422
adamc@792	2423 return NULL;
adamc@457	2424 }
adamc@462	2425
adamc@466	2426 uw_unit uw_Basis_set_cookie(uw_context ctx, uw_Basis_string prefix, uw_Basis_string c, uw_Basis_string v) {
adamc@462	2427 uw_write_header(ctx, "Set-Cookie: ");
adamc@462	2428 uw_write_header(ctx, c);
adamc@462	2429 uw_write_header(ctx, "=");
adamc@462	2430 uw_write_header(ctx, v);
adamc@466	2431 uw_write_header(ctx, "; path=");
adamc@466	2432 uw_write_header(ctx, prefix);
adamc@462	2433 uw_write_header(ctx, "\r\n");
adamc@462	2434
adamc@462	2435 return uw_unit_v;
adamc@462	2436 }
adamc@667	2437
adamc@682	2438 static delta *allocate_delta(uw_context ctx, unsigned client) {
adamc@682	2439 unsigned i;
adamc@682	2440 delta *d;
adamc@671	2441
adamc@682	2442 for (i = 0; i < ctx->used_deltas; ++i)
adamc@682	2443 if (ctx->deltas[i].client == client)
adamc@682	2444 return &ctx->deltas[i];
adamc@671	2445
adamc@682	2446 if (ctx->used_deltas >= ctx->n_deltas) {
adamc@682	2447 ctx->deltas = realloc(ctx->deltas, sizeof(delta) * ++ctx->n_deltas);
adamc@682	2448 buf_init(&ctx->deltas[ctx->n_deltas-1].msgs, 0);
adamc@682	2449 }
adamc@671	2450
adamc@682	2451 d = &ctx->deltas[ctx->used_deltas++];
adamc@682	2452 d->client = client;
adamc@682	2453 buf_reset(&d->msgs);
adamc@682	2454 return d;
adamc@671	2455 }
adamc@671	2456
adamc@668	2457 uw_Basis_channel uw_Basis_new_channel(uw_context ctx, uw_unit u) {
adamc@682	2458 if (ctx->client == NULL)
adamc@682	2459 uw_error(ctx, FATAL, "Attempt to create channel on request not associated with a persistent connection");
adamc@671	2460
adamc@682	2461 return new_channel(ctx->client);
adamc@668	2462 }
adamc@668	2463
adamc@668	2464 uw_unit uw_Basis_send(uw_context ctx, uw_Basis_channel chn, uw_Basis_string msg) {
adamc@682	2465 delta *d = allocate_delta(ctx, chn.cli);
adamc@682	2466 size_t len;
adamc@682	2467 int preLen;
adamc@682	2468 char pre[INTS_MAX + 2];
adamc@668	2469
adamc@682	2470 len = strlen(msg);
adamc@682	2471
adamc@682	2472 sprintf(pre, "%u\n%n", chn.chn, &preLen);
adamc@682	2473
adamc@682	2474 buf_append(&d->msgs, pre, preLen);
adamc@682	2475 buf_append(&d->msgs, msg, len);
adamc@682	2476 buf_append(&d->msgs, "\n", 1);
adamc@671	2477
adamc@671	2478 return uw_unit_v;
adamc@668	2479 }
adamc@671	2480
adamc@671	2481 int uw_db_commit(uw_context);
adamc@671	2482 int uw_db_rollback(uw_context);
adamc@671	2483
adamc@671	2484 void uw_commit(uw_context ctx) {
adamc@682	2485 unsigned i;
adamc@671	2486
adamc@771	2487 for (i = 0; i < ctx->used_transactionals; ++i)
adamc@771	2488 if (ctx->transactionals[i].rollback != NULL)
adamc@771	2489 ctx->transactionals[i].commit(ctx->transactionals[i].data);
adamc@771	2490
adamc@771	2491 for (i = 0; i < ctx->used_transactionals; ++i)
adamc@771	2492 if (ctx->transactionals[i].rollback == NULL)
adamc@771	2493 ctx->transactionals[i].commit(ctx->transactionals[i].data);
adamc@771	2494
adamc@771	2495 if (uw_db_commit(ctx))
adamc@671	2496 uw_error(ctx, FATAL, "Error running SQL COMMIT");
adamc@682	2497
adamc@682	2498 for (i = 0; i < ctx->used_deltas; ++i) {
adamc@682	2499 delta *d = &ctx->deltas[i];
adamc@682	2500 client *c = find_client(d->client);
adamc@682	2501
adamc@682	2502 assert (c != NULL && c->mode == USED);
adamc@682	2503
adamc@685	2504 client_send(c, &d->msgs);
adamc@682	2505 }
adamc@682	2506
adamc@682	2507 if (ctx->client)
adamc@685	2508 release_client(ctx->client);
adamc@771	2509
adamc@771	2510 for (i = 0; i < ctx->used_transactionals; ++i)
adamc@771	2511 ctx->transactionals[i].free(ctx->transactionals[i].data);
adamc@671	2512 }
adamc@671	2513
adamc@671	2514 int uw_rollback(uw_context ctx) {
adamc@771	2515 size_t i;
adamc@771	2516
adamc@682	2517 if (ctx->client)
adamc@685	2518 release_client(ctx->client);
adamc@671	2519
adamc@771	2520 for (i = 0; i < ctx->used_transactionals; ++i)
adamc@771	2521 if (ctx->transactionals[i].rollback != NULL)
adamc@771	2522 ctx->transactionals[i].rollback(ctx->transactionals[i].data);
adamc@771	2523
adamc@771	2524 for (i = 0; i < ctx->used_transactionals; ++i)
adamc@771	2525 ctx->transactionals[i].free(ctx->transactionals[i].data);
adamc@771	2526
adamc@671	2527 return uw_db_rollback(ctx);
adamc@671	2528 }
adamc@683	2529
adamc@771	2530 void uw_register_transactional(uw_context ctx, void *data, uw_callback commit, uw_callback rollback,
adamc@771	2531 uw_callback free) {
adamc@771	2532 if (commit == NULL)
adamc@771	2533 uw_error(ctx, FATAL, "uw_register_transactional: NULL commit callback");
adamc@771	2534
adamc@771	2535 if (ctx->used_transactionals >= ctx->n_transactionals) {
adamc@771	2536 ctx->transactionals = realloc(ctx->transactionals, ctx->used_transactionals+1);
adamc@771	2537 ++ctx->n_transactionals;
adamc@771	2538 }
adamc@771	2539
adamc@771	2540 ctx->transactionals[ctx->used_transactionals].data = data;
adamc@771	2541 ctx->transactionals[ctx->used_transactionals].commit = commit;
adamc@771	2542 ctx->transactionals[ctx->used_transactionals].rollback = rollback;
adamc@771	2543 ctx->transactionals[ctx->used_transactionals++].free = free;
adamc@771	2544 }
adamc@771	2545
adamc@683	2546
adamc@683	2547 // "Garbage collection"
adamc@683	2548
adamc@683	2549 void uw_expunger(uw_context ctx, uw_Basis_client cli);
adamc@683	2550
adamc@683	2551 static failure_kind uw_expunge(uw_context ctx, uw_Basis_client cli) {
adamc@683	2552 int r = setjmp(ctx->jmp_buf);
adamc@683	2553
adamc@684	2554 if (r == 0) {
adamc@684	2555 if (uw_db_begin(ctx))
adamc@684	2556 uw_error(ctx, FATAL, "Error running SQL BEGIN");
adamc@683	2557 uw_expunger(ctx, cli);
adamc@684	2558 if (uw_db_commit(ctx))
adamc@684	2559 uw_error(ctx, FATAL, "Error running SQL COMMIT");
adamc@684	2560 }
adamc@683	2561
adamc@683	2562 return r;
adamc@683	2563 }
adamc@683	2564
adamc@683	2565 void uw_prune_clients(uw_context ctx) {
adamc@683	2566 client c, next, *prev = NULL;
adamc@683	2567 time_t cutoff;
adamc@683	2568
adamc@683	2569 cutoff = time(NULL) - uw_timeout;
adamc@683	2570
adamc@683	2571 pthread_mutex_lock(&clients_mutex);
adamc@683	2572
adamc@683	2573 for (c = clients_used; c; c = next) {
adamc@683	2574 next = c->next;
adamc@683	2575 pthread_mutex_lock(&c->lock);
adamc@685	2576 if (c->last_contact < cutoff && c->refcount == 0) {
adamc@683	2577 failure_kind fk = UNLIMITED_RETRY;
adamc@683	2578 if (prev)
adamc@683	2579 prev->next = next;
adamc@683	2580 else
adamc@683	2581 clients_used = next;
adamc@684	2582 uw_reset(ctx);
adamc@683	2583 while (fk == UNLIMITED_RETRY) {
adamc@683	2584 fk = uw_expunge(ctx, c->id);
adamc@684	2585 if (fk == UNLIMITED_RETRY) {
adamc@684	2586 uw_db_rollback(ctx);
adamc@684	2587 printf("Unlimited retry during expunge: %s\n", uw_error_message(ctx));
adamc@683	2588 }
adamc@683	2589 }
adamc@684	2590 if (fk == SUCCESS)
adamc@684	2591 free_client(c);
adamc@684	2592 else {
adamc@684	2593 uw_db_rollback(ctx);
adamc@683	2594 printf("Expunge blocked by error: %s\n", uw_error_message(ctx));
adamc@684	2595 }
adamc@683	2596 }
adamc@683	2597 else
adamc@683	2598 prev = c;
adamc@683	2599 pthread_mutex_unlock(&c->lock);
adamc@683	2600 }
adamc@683	2601
adamc@683	2602 pthread_mutex_unlock(&clients_mutex);
adamc@683	2603 }
adamc@687	2604
adamc@687	2605 void uw_initializer(uw_context ctx);
adamc@687	2606
adamc@687	2607 failure_kind uw_initialize(uw_context ctx) {
adamc@687	2608 int r = setjmp(ctx->jmp_buf);
adamc@687	2609
adamc@687	2610 if (r == 0) {
adamc@687	2611 if (uw_db_begin(ctx))
adamc@687	2612 uw_error(ctx, FATAL, "Error running SQL BEGIN");
adamc@687	2613 uw_initializer(ctx);
adamc@687	2614 if (uw_db_commit(ctx))
adamc@687	2615 uw_error(ctx, FATAL, "Error running SQL COMMIT");
adamc@687	2616 }
adamc@687	2617
adamc@687	2618 return r;
adamc@687	2619 }
adamc@717	2620
adamc@770	2621 extern int uw_check_url(const char *);
adamc@770	2622 extern int uw_check_mime(const char *);
adamc@770	2623
adamc@717	2624 uw_Basis_string uw_Basis_bless(uw_context ctx, uw_Basis_string s) {
adamc@770	2625 if (uw_check_url(s))
adamc@770	2626 return s;
adamc@770	2627 else
adamc@770	2628 uw_error(ctx, FATAL, "Disallowed URL %s", uw_Basis_htmlifyString(ctx, s));
adamc@717	2629 }
adamc@734	2630
adamc@770	2631 uw_Basis_string uw_Basis_checkUrl(uw_context ctx, uw_Basis_string s) {
adamc@770	2632 if (uw_check_url(s))
adamc@770	2633 return s;
adamc@770	2634 else
adamc@770	2635 return NULL;
adamc@770	2636 }
adamc@770	2637
adamc@770	2638 int mime_format(const char *s) {
adamc@770	2639 for (; *s; ++s)
adamc@770	2640 if (!isalnum(s) && s != '/' && s != '-' && s != '.')
adamc@770	2641 return 0;
adamc@770	2642
adamc@770	2643 return 1;
adamc@770	2644 }
adamc@770	2645
adamc@741	2646 uw_Basis_string uw_Basis_blessMime(uw_context ctx, uw_Basis_string s) {
adamc@770	2647 if (!mime_format(s))
adamc@770	2648 uw_error(ctx, FATAL, "MIME type \"%s\" contains invalid character", uw_Basis_htmlifyString(ctx, s));
adamc@770	2649
adamc@770	2650 if (uw_check_mime(s))
adamc@770	2651 return s;
adamc@770	2652 else
adamc@770	2653 uw_error(ctx, FATAL, "Disallowed MIME type %s", uw_Basis_htmlifyString(ctx, s));
adamc@770	2654 }
adamc@770	2655
adamc@770	2656 uw_Basis_string uw_Basis_checkMime(uw_context ctx, uw_Basis_string s) {
adamc@770	2657 if (!mime_format(s))
adamc@770	2658 return NULL;
adamc@770	2659
adamc@770	2660 if (uw_check_mime(s))
adamc@770	2661 return s;
adamc@770	2662 else
adamc@770	2663 return NULL;
adamc@741	2664 }
adamc@741	2665
adamc@734	2666 uw_Basis_string uw_unnull(uw_Basis_string s) {
adamc@734	2667 return s ? s : "";
adamc@734	2668 }
adamc@734	2669
adamc@734	2670 extern int uw_hash_blocksize;
adamc@734	2671
adamc@734	2672 uw_Basis_string uw_Basis_makeSigString(uw_context ctx, uw_Basis_string sig) {
adamc@734	2673 uw_Basis_string r = uw_malloc(ctx, 2 * uw_hash_blocksize + 1);
adamc@734	2674 int i;
adamc@734	2675
adamc@734	2676 for (i = 0; i < uw_hash_blocksize; ++i)
adamc@734	2677 sprintf(&r[2i], "%.02X", ((unsigned char )sig)[i]);
adamc@734	2678
adamc@734	2679 return r;
adamc@734	2680 }
adamc@734	2681
adamc@734	2682 uw_Basis_string uw_Basis_sigString(uw_context ctx, uw_unit u) {
adamc@734	2683 return uw_cookie_sig(ctx);
adamc@734	2684 }
adamc@737	2685
adamc@737	2686 uw_Basis_string uw_Basis_fileName(uw_context ctx, uw_Basis_file f) {
adamc@737	2687 return f.name;
adamc@737	2688 }
adamc@737	2689
adamc@740	2690 uw_Basis_string uw_Basis_fileMimeType(uw_context ctx, uw_Basis_file f) {
adamc@740	2691 return f.type;
adamc@740	2692 }
adamc@740	2693
adamc@745	2694 uw_Basis_int uw_Basis_blobSize(uw_context ctx, uw_Basis_blob b) {
adamc@745	2695 return b.size;
adamc@745	2696 }
adamc@745	2697
adamc@737	2698 uw_Basis_blob uw_Basis_fileData(uw_context ctx, uw_Basis_file f) {
adamc@737	2699 return f.data;
adamc@737	2700 }
adamc@741	2701
adamc@741	2702 __attribute__((noreturn)) void uw_return_blob(uw_context ctx, uw_Basis_blob b, uw_Basis_string mimeType) {
adamc@741	2703 cleanup *cl;
adamc@741	2704 int len;
adamc@741	2705
adamc@741	2706 buf_reset(&ctx->outHeaders);
adamc@741	2707 buf_reset(&ctx->page);
adamc@741	2708
adamc@741	2709 uw_write_header(ctx, "HTTP/1.1 200 OK\r\nContent-Type: ");
adamc@741	2710 uw_write_header(ctx, mimeType);
adamc@741	2711 uw_write_header(ctx, "\r\nContent-Length: ");
adamc@741	2712 buf_check(&ctx->outHeaders, INTS_MAX);
adamc@741	2713 sprintf(ctx->outHeaders.front, "%d%n", b.size, &len);
adamc@741	2714 ctx->outHeaders.front += len;
adamc@741	2715 uw_write_header(ctx, "\r\n");
adamc@741	2716
adamc@741	2717 buf_append(&ctx->page, b.data, b.size);
adamc@741	2718
adamc@741	2719 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adamc@741	2720 cl->func(cl->arg);
adamc@741	2721
adamc@741	2722 ctx->cleanup_front = ctx->cleanup;
adamc@741	2723
adamc@741	2724 longjmp(ctx->jmp_buf, RETURN_BLOB);
adamc@741	2725 }

Mercurial > urweb

annotate src/c/urweb.c @ 840:e4a02e4fa35c