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

annotate src/c/urweb.c @ 898:d1d0b18afd3d

Working on Grid; have gone from one dynamic table bizareness to another

author	Adam Chlipala <adamc@hcoop.net>
date	Sun, 19 Jul 2009 17:45:02 -0400
parents	e6070333d8a8
children	8e540df3294d

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@863	22 int uw_really_send(int sock, const void *buf, ssize_t len) {
adamc@667	23 while (len > 0) {
adamc@856	24 ssize_t n = send(sock, buf, len, 0);
adamc@856	25
adamc@856	26 if (n < 0)
adamc@856	27 return n;
adamc@856	28
adamc@856	29 buf += n;
adamc@856	30 len -= n;
adamc@856	31 }
adamc@856	32
adamc@856	33 return 0;
adamc@856	34 }
adamc@856	35
adamc@856	36 int uw_really_write(int fd, const void *buf, size_t len) {
adamc@856	37 while (len > 0) {
adamc@856	38 ssize_t n = write(fd, buf, len);
adamc@667	39
adamc@667	40 if (n < 0)
adamc@667	41 return n;
adamc@667	42
adamc@667	43 buf += n;
adamc@667	44 len -= n;
adamc@667	45 }
adamc@667	46
adamc@667	47 return 0;
adamc@667	48 }
adamc@667	49
adamc@667	50
adamc@667	51 // Buffers
adamc@667	52
adamc@667	53 typedef struct {
adamc@667	54 char start, front, *back;
adamc@667	55 } buf;
adamc@667	56
adamc@667	57 static void buf_init(buf *b, size_t s) {
adamc@667	58 b->front = b->start = malloc(s);
adamc@667	59 b->back = b->front + s;
adamc@667	60 }
adamc@667	61
adamc@667	62 static void buf_free(buf *b) {
adamc@667	63 free(b->start);
adamc@667	64 }
adamc@667	65
adamc@667	66 static void buf_reset(buf *b) {
adamc@667	67 b->front = b->start;
adamc@667	68 }
adamc@667	69
adamc@667	70 static void buf_check(buf *b, size_t extra) {
adamc@667	71 if (b->back - b->front < extra) {
adamc@667	72 size_t desired = b->front - b->start + extra, next;
adamc@667	73 char *new_heap;
adamc@667	74
adamc@667	75 next = b->back - b->start;
adamc@667	76 if (next == 0)
adamc@667	77 next = 1;
adamc@667	78 for (; next < desired; next *= 2);
adamc@667	79
adamc@667	80 new_heap = realloc(b->start, next);
adamc@667	81 b->front = new_heap + (b->front - b->start);
adamc@667	82 b->back = new_heap + next;
adamc@667	83 b->start = new_heap;
adamc@667	84 }
adamc@667	85 }
adamc@667	86
adamc@667	87 static size_t buf_used(buf *b) {
adamc@667	88 return b->front - b->start;
adamc@667	89 }
adamc@667	90
adamc@667	91 static size_t buf_avail(buf *b) {
adamc@667	92 return b->back - b->start;
adamc@667	93 }
adamc@667	94
adamc@668	95 static void buf_append(buf b, const char s, size_t len) {
adamc@672	96 buf_check(b, len+1);
adamc@668	97 memcpy(b->front, s, len);
adamc@668	98 b->front += len;
adamc@672	99 *b->front = 0;
adamc@668	100 }
adamc@667	101
adamc@668	102
adamc@672	103 // Persistent state types
adamc@667	104
adamc@667	105 typedef enum { UNUSED, USED } usage;
adamc@667	106
adamc@667	107 typedef struct client {
adamc@682	108 unsigned id;
adamc@667	109 usage mode;
adamc@682	110 int pass;
adamc@682	111 struct client *next;
adamc@689	112 pthread_mutex_t lock, pull_lock;
adamc@682	113 buf msgs;
adamc@682	114 int sock;
adamc@863	115 int (send)(int sockfd, const void buf, ssize_t len);
adamc@863	116 int (*close)(int fd);
adamc@682	117 time_t last_contact;
adamc@682	118 unsigned n_channels;
adamc@685	119 unsigned refcount;
adamc@667	120 } client;
adamc@667	121
adamc@672	122
adamc@672	123 // Persistent client state
adamc@672	124
adamc@682	125 static client *clients, clients_free, *clients_used;
adamc@682	126 static unsigned n_clients;
adamc@667	127
adamc@667	128 static pthread_mutex_t clients_mutex = PTHREAD_MUTEX_INITIALIZER;
adamc@667	129
adamc@682	130 static client *new_client() {
adamc@667	131 client *c;
adamc@667	132
adamc@667	133 pthread_mutex_lock(&clients_mutex);
adamc@667	134
adamc@667	135 if (clients_free) {
adamc@667	136 c = clients_free;
adamc@682	137 clients_free = clients_free->next;
adamc@667	138 }
adamc@667	139 else {
adamc@667	140 ++n_clients;
adamc@667	141 clients = realloc(clients, sizeof(client) * n_clients);
adamc@667	142 c = malloc(sizeof(client));
adamc@667	143 c->id = n_clients-1;
adamc@682	144 pthread_mutex_init(&c->lock, NULL);
adamc@689	145 pthread_mutex_init(&c->pull_lock, NULL);
adamc@682	146 buf_init(&c->msgs, 0);
adamc@667	147 clients[n_clients-1] = c;
adamc@667	148 }
adamc@667	149
adamc@682	150 pthread_mutex_lock(&c->lock);
adamc@667	151 c->mode = USED;
adamc@682	152 c->pass = rand();
adamc@682	153 c->sock = -1;
adamc@682	154 c->last_contact = time(NULL);
adamc@682	155 buf_reset(&c->msgs);
adamc@682	156 c->n_channels = 0;
adamc@685	157 c->refcount = 0;
adamc@682	158 pthread_mutex_unlock(&c->lock);
adamc@682	159
adamc@682	160 c->next = clients_used;
adamc@682	161 clients_used = c;
adamc@667	162
adamc@667	163 pthread_mutex_unlock(&clients_mutex);
adamc@667	164
adamc@667	165 return c;
adamc@667	166 }
adamc@667	167
adamc@685	168 static void use_client(client *c) {
adamc@685	169 pthread_mutex_lock(&c->lock);
adamc@685	170 ++c->refcount;
adamc@685	171 pthread_mutex_unlock(&c->lock);
adamc@689	172 pthread_mutex_lock(&c->pull_lock);
adamc@685	173 }
adamc@685	174
adamc@685	175 static void release_client(client *c) {
adamc@689	176 pthread_mutex_unlock(&c->pull_lock);
adamc@685	177 pthread_mutex_lock(&c->lock);
adamc@685	178 --c->refcount;
adamc@685	179 pthread_mutex_unlock(&c->lock);
adamc@689	180
adamc@685	181 }
adamc@685	182
adamc@856	183 static const char begin_msgs[] = "Content-type: text/plain\r\n\r\n";
adamc@667	184
adamc@682	185 static client *find_client(unsigned id) {
adamc@667	186 client *c;
adamc@667	187
adamc@667	188 pthread_mutex_lock(&clients_mutex);
adamc@667	189
adamc@667	190 if (id >= n_clients) {
adamc@667	191 pthread_mutex_unlock(&clients_mutex);
adamc@668	192 return NULL;
adamc@667	193 }
adamc@667	194
adamc@667	195 c = clients[id];
adamc@667	196
adamc@668	197 pthread_mutex_unlock(&clients_mutex);
adamc@668	198 return c;
adamc@668	199 }
adamc@668	200
adamc@856	201 static char *on_success = "HTTP/1.1 200 OK\r\n";
adamc@856	202
adamc@856	203 void uw_set_on_success(char *s) {
adamc@856	204 on_success = s;
adamc@856	205 }
adamc@856	206
adamc@863	207 void uw_client_connect(unsigned id, int pass, int sock,
adamc@863	208 int (send)(int sockfd, const void buf, ssize_t len),
adamc@864	209 int (*close)(int fd),
adamc@864	210 void *logger_data, uw_logger log_error) {
adamc@682	211 client *c = find_client(id);
adamc@668	212
adamc@668	213 if (c == NULL) {
adamc@667	214 close(sock);
adamc@864	215 log_error(logger_data, "Out-of-bounds client request (%u)\n", id);
adamc@667	216 return;
adamc@667	217 }
adamc@667	218
adamc@682	219 pthread_mutex_lock(&c->lock);
adamc@671	220
adamc@682	221 if (c->mode != USED) {
adamc@682	222 pthread_mutex_unlock(&c->lock);
adamc@667	223 close(sock);
adamc@864	224 log_error(logger_data, "Client request for unused slot (%u)\n", id);
adamc@667	225 return;
adamc@667	226 }
adamc@667	227
adamc@682	228 if (pass != c->pass) {
adamc@682	229 pthread_mutex_unlock(&c->lock);
adamc@682	230 close(sock);
adamc@864	231 log_error(logger_data, "Wrong client password (%u, %d)\n", id, pass);
adamc@682	232 return;
adamc@667	233 }
adamc@667	234
adamc@682	235 if (c->sock != -1) {
adamc@863	236 c->close(c->sock);
adamc@682	237 c->sock = -1;
adamc@682	238 }
adamc@667	239
adamc@682	240 c->last_contact = time(NULL);
adamc@682	241
adamc@682	242 if (buf_used(&c->msgs) > 0) {
adamc@863	243 send(sock, on_success, strlen(on_success));
adamc@863	244 send(sock, begin_msgs, sizeof(begin_msgs) - 1);
adamc@863	245 send(sock, c->msgs.start, buf_used(&c->msgs));
adamc@682	246 buf_reset(&c->msgs);
adamc@667	247 close(sock);
adamc@667	248 }
adamc@863	249 else {
adamc@682	250 c->sock = sock;
adamc@863	251 c->send = send;
adamc@863	252 c->close = close;
adamc@863	253 }
adamc@667	254
adamc@682	255 pthread_mutex_unlock(&c->lock);
adamc@667	256 }
adamc@667	257
adamc@682	258 static void free_client(client *c) {
adamc@682	259 c->mode = UNUSED;
adamc@682	260 c->pass = -1;
adamc@667	261
adamc@682	262 c->next = clients_free;
adamc@682	263 clients_free = c;
adamc@667	264 }
adamc@667	265
adamc@682	266 static uw_Basis_channel new_channel(client *c) {
adamc@682	267 uw_Basis_channel ch = {c->id, c->n_channels++};
adamc@668	268 return ch;
adamc@668	269 }
adamc@668	270
adamc@685	271 static void client_send(client c, buf msg) {
adamc@685	272 pthread_mutex_lock(&c->lock);
adamc@671	273
adamc@682	274 if (c->sock != -1) {
adamc@863	275 c->send(c->sock, on_success, strlen(on_success));
adamc@863	276 c->send(c->sock, begin_msgs, sizeof(begin_msgs) - 1);
adamc@863	277 c->send(c->sock, msg->start, buf_used(msg));
adamc@863	278 c->close(c->sock);
adamc@682	279 c->sock = -1;
adamc@682	280 } else
adamc@682	281 buf_append(&c->msgs, msg->start, buf_used(msg));
adamc@671	282
adamc@685	283 pthread_mutex_unlock(&c->lock);
adamc@668	284 }
adamc@668	285
adamc@668	286
adamc@668	287 // Global entry points
adamc@668	288
adamc@866	289 extern void uw_client_init();
adamc@866	290
adamc@668	291 void uw_global_init() {
adamc@668	292 srand(time(NULL) ^ getpid());
adamc@668	293
adamc@668	294 clients = malloc(0);
adamc@866	295
adamc@866	296 uw_client_init();
adamc@668	297 }
adamc@668	298
adamc@668	299
adamc@667	300 // Single-request state
adamc@667	301
adamc@167	302 #define ERROR_BUF_LEN 1024
adamc@167	303
adamc@323	304 typedef struct regions {
adamc@323	305 struct regions *next;
adamc@323	306 } regions;
adamc@323	307
adamc@425	308 typedef struct {
adamc@425	309 void (func)(void);
adamc@425	310 void *arg;
adamc@425	311 } cleanup;
adamc@425	312
adamc@671	313 typedef struct {
adamc@682	314 unsigned client;
adamc@671	315 buf msgs;
adamc@682	316 } delta;
adamc@671	317
adamc@737	318 typedef enum {
adamc@759	319 UNSET, NORMAL, FIL, SUBFORM, SUBFORMS, ENTRY
adamc@737	320 } input_kind;
adamc@737	321
adamc@756	322 typedef struct input {
adamc@737	323 input_kind kind;
adamc@737	324 union {
adamc@737	325 char *normal;
adamc@739	326 uw_Basis_file file;
adamc@756	327 struct {
adamc@759	328 struct input fields, parent;
adamc@756	329 } subform;
adamc@759	330 struct {
adamc@759	331 struct input entries, parent;
adamc@759	332 } subforms;
adamc@759	333 struct {
adamc@759	334 struct input fields, next, *parent;
adamc@759	335 } entry;
adamc@737	336 } data;
adamc@737	337 } input;
adamc@737	338
adamc@771	339 typedef struct {
adamc@771	340 void *data;
adamc@771	341 uw_callback commit, rollback, free;
adamc@771	342 } transactional;
adamc@771	343
adamc@311	344 struct uw_context {
adamc@854	345 char (get_header)(void , const char );
adamc@854	346 void *get_header_data;
adamc@457	347
adamc@666	348 buf outHeaders, page, heap, script;
adamc@759	349 input inputs, subinputs, *cur_container;
adamc@756	350 size_t n_subinputs, used_subinputs;
adamc@167	351
adamc@565	352 int source_count;
adamc@562	353
adamc@272	354 void *db;
adamc@272	355
adamc@167	356 jmp_buf jmp_buf;
adamc@167	357
adamc@323	358 regions *regions;
adamc@323	359
adamc@425	360 cleanup cleanup, cleanup_front, *cleanup_back;
adamc@425	361
adamc@667	362 const char script_header, url_prefix;
adamc@643	363
adamc@736	364 int needs_push, needs_sig;
adamc@693	365
adamc@682	366 size_t n_deltas, used_deltas;
adamc@682	367 delta *deltas;
adamc@671	368
adamc@673	369 int timeout;
adamc@673	370
adamc@682	371 client *client;
adamc@682	372
adamc@771	373 transactional *transactionals;
adamc@771	374 size_t n_transactionals, used_transactionals;
adamc@771	375
adamc@167	376 char error_message[ERROR_BUF_LEN];
adamc@117	377 };
adamc@117	378
adamc@683	379 extern int uw_inputs_len, uw_timeout;
adamc@144	380
adamc@687	381 uw_context uw_init() {
adamc@311	382 uw_context ctx = malloc(sizeof(struct uw_context));
adamc@136	383
adamc@854	384 ctx->get_header = NULL;
adamc@854	385 ctx->get_header_data = NULL;
adamc@457	386
adamc@687	387 buf_init(&ctx->outHeaders, 0);
adamc@687	388 buf_init(&ctx->page, 0);
adamc@687	389 buf_init(&ctx->heap, 0);
adamc@698	390 buf_init(&ctx->script, 1);
adamc@667	391 ctx->script.start[0] = 0;
adamc@136	392
adamc@737	393 ctx->inputs = calloc(uw_inputs_len, sizeof(input));
adamc@759	394 ctx->cur_container = NULL;
adamc@756	395 ctx->subinputs = malloc(0);
adamc@756	396 ctx->n_subinputs = ctx->used_subinputs = 0;
adamc@144	397
adamc@272	398 ctx->db = NULL;
adamc@272	399
adamc@323	400 ctx->regions = NULL;
adamc@323	401
adamc@425	402 ctx->cleanup_front = ctx->cleanup_back = ctx->cleanup = malloc(0);
adamc@425	403
adamc@643	404 ctx->script_header = "";
adamc@667	405 ctx->url_prefix = "/";
adamc@693	406 ctx->needs_push = 0;
adamc@736	407 ctx->needs_sig = 0;
adamc@643	408
adamc@167	409 ctx->error_message[0] = 0;
adamc@167	410
adamc@565	411 ctx->source_count = 0;
adamc@562	412
adamc@682	413 ctx->n_deltas = ctx->used_deltas = 0;
adamc@671	414 ctx->deltas = malloc(0);
adamc@671	415
adamc@673	416 ctx->timeout = uw_timeout;
adamc@673	417
adamc@700	418 ctx->client = NULL;
adamc@700	419
adamc@700	420 ctx->error_message[0] = 0;
adamc@700	421
adamc@771	422 ctx->transactionals = malloc(0);
adamc@771	423 ctx->n_transactionals = ctx->used_transactionals = 0;
adamc@771	424
adamc@117	425 return ctx;
adamc@106	426 }
adamc@106	427
adamc@311	428 void uw_set_db(uw_context ctx, void *db) {
adamc@272	429 ctx->db = db;
adamc@272	430 }
adamc@272	431
adamc@311	432 void *uw_get_db(uw_context ctx) {
adamc@272	433 return ctx->db;
adamc@272	434 }
adamc@272	435
adamc@311	436 void uw_free(uw_context ctx) {
adamc@671	437 size_t i;
adamc@671	438
adamc@666	439 buf_free(&ctx->outHeaders);
adamc@666	440 buf_free(&ctx->script);
adamc@666	441 buf_free(&ctx->page);
adamc@666	442 buf_free(&ctx->heap);
adamc@144	443 free(ctx->inputs);
adamc@756	444 free(ctx->subinputs);
adamc@425	445 free(ctx->cleanup);
adamc@771	446 free(ctx->transactionals);
adamc@671	447
adamc@682	448 for (i = 0; i < ctx->n_deltas; ++i)
adamc@671	449 buf_free(&ctx->deltas[i].msgs);
adamc@671	450
adamc@136	451 free(ctx);
adamc@136	452 }
adamc@136	453
adamc@562	454 void uw_reset_keep_error_message(uw_context ctx) {
adamc@756	455 size_t i;
adamc@756	456
adamc@666	457 buf_reset(&ctx->outHeaders);
adamc@666	458 buf_reset(&ctx->script);
adamc@667	459 ctx->script.start[0] = 0;
adamc@666	460 buf_reset(&ctx->page);
adamc@666	461 buf_reset(&ctx->heap);
adamc@323	462 ctx->regions = NULL;
adamc@425	463 ctx->cleanup_front = ctx->cleanup;
adamc@565	464 ctx->source_count = 0;
adamc@682	465 ctx->used_deltas = 0;
adamc@682	466 ctx->client = NULL;
adamc@759	467 ctx->cur_container = NULL;
adamc@771	468 ctx->used_transactionals = 0;
adamc@167	469 }
adamc@167	470
adamc@562	471 void uw_reset_keep_request(uw_context ctx) {
adamc@562	472 uw_reset_keep_error_message(ctx);
adamc@562	473 ctx->error_message[0] = 0;
adamc@167	474 }
adamc@167	475
adamc@311	476 void uw_reset(uw_context ctx) {
adamc@311	477 uw_reset_keep_request(ctx);
adamc@737	478 memset(ctx->inputs, 0, uw_inputs_len * sizeof(input));
adamc@756	479 memset(ctx->subinputs, 0, ctx->n_subinputs * sizeof(input));
adamc@756	480 ctx->used_subinputs = 0;
adamc@144	481 }
adamc@144	482
adamc@311	483 void uw_db_init(uw_context);
adamc@311	484 void uw_handle(uw_context, char *);
adamc@167	485
adamc@311	486 failure_kind uw_begin_init(uw_context ctx) {
adamc@272	487 int r = setjmp(ctx->jmp_buf);
adamc@272	488
adamc@272	489 if (r == 0)
adamc@311	490 uw_db_init(ctx);
adamc@272	491
adamc@272	492 return r;
adamc@272	493 }
adamc@272	494
adamc@854	495 void uw_set_headers(uw_context ctx, char (get_header)(void , const char ), void *get_header_data) {
adamc@854	496 ctx->get_header = get_header;
adamc@854	497 ctx->get_header_data = get_header_data;
adamc@742	498 }
adamc@742	499
adamc@671	500 int uw_db_begin(uw_context);
adamc@167	501
adamc@801	502 static void uw_set_error(uw_context ctx, const char *fmt, ...) {
adamc@801	503 va_list ap;
adamc@801	504 va_start(ap, fmt);
adamc@801	505
adamc@801	506 vsnprintf(ctx->error_message, ERROR_BUF_LEN, fmt, ap);
adamc@801	507 }
adamc@801	508
adamc@311	509 __attribute__((noreturn)) void uw_error(uw_context ctx, failure_kind fk, const char *fmt, ...) {
adamc@425	510 cleanup *cl;
adamc@425	511
adamc@167	512 va_list ap;
adamc@167	513 va_start(ap, fmt);
adamc@167	514
adamc@167	515 vsnprintf(ctx->error_message, ERROR_BUF_LEN, fmt, ap);
adamc@167	516
adamc@425	517 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adamc@425	518 cl->func(cl->arg);
adamc@425	519
adamc@425	520 ctx->cleanup_front = ctx->cleanup;
adamc@425	521
adamc@190	522 longjmp(ctx->jmp_buf, fk);
adamc@167	523 }
adamc@167	524
adamc@425	525 void uw_push_cleanup(uw_context ctx, void (func)(void ), void *arg) {
adamc@425	526 if (ctx->cleanup_front >= ctx->cleanup_back) {
adamc@425	527 int len = ctx->cleanup_back - ctx->cleanup, newLen;
adamc@425	528 if (len == 0)
adamc@425	529 newLen = 1;
adamc@425	530 else
adamc@428	531 newLen = len * 2;
adamc@470	532 ctx->cleanup = realloc(ctx->cleanup, newLen * sizeof(cleanup));
adamc@425	533 ctx->cleanup_front = ctx->cleanup + len;
adamc@425	534 ctx->cleanup_back = ctx->cleanup + newLen;
adamc@425	535 }
adamc@425	536
adamc@425	537 ctx->cleanup_front->func = func;
adamc@425	538 ctx->cleanup_front->arg = arg;
adamc@425	539 ++ctx->cleanup_front;
adamc@425	540 }
adamc@425	541
adamc@682	542 uw_Basis_string uw_Basis_requestHeader(uw_context ctx, uw_Basis_string h) {
adamc@854	543 return ctx->get_header(ctx->get_header_data, h);
adamc@682	544 }
adamc@682	545
adamc@682	546 void uw_login(uw_context ctx) {
adamc@693	547 if (ctx->needs_push) {
adamc@682	548 char id_s, pass_s;
adamc@682	549
adamc@682	550 if ((id_s = uw_Basis_requestHeader(ctx, "UrWeb-Client"))
adamc@682	551 && (pass_s = uw_Basis_requestHeader(ctx, "UrWeb-Pass"))) {
adamc@682	552 unsigned id = atoi(id_s);
adamc@682	553 int pass = atoi(pass_s);
adamc@682	554 client *c = find_client(id);
adamc@682	555
adamc@682	556 if (c == NULL)
adamc@682	557 uw_error(ctx, FATAL, "Unknown client ID in HTTP headers (%s, %s)", id_s, pass_s);
adamc@682	558 else {
adamc@685	559 use_client(c);
adamc@682	560 ctx->client = c;
adamc@682	561
adamc@682	562 if (c->mode != USED)
adamc@682	563 uw_error(ctx, FATAL, "Stale client ID (%u) in subscription request", id);
adamc@682	564 if (c->pass != pass)
adamc@682	565 uw_error(ctx, FATAL, "Wrong client password (%u, %d) in subscription request", id, pass);
adamc@682	566 }
adamc@682	567 } else {
adamc@682	568 client *c = new_client();
adamc@685	569 use_client(c);
adamc@682	570 ctx->client = c;
adamc@864	571 }
adamc@682	572 }
adamc@682	573 }
adamc@682	574
adamc@671	575 failure_kind uw_begin(uw_context ctx, char *path) {
adamc@671	576 int r = setjmp(ctx->jmp_buf);
adamc@671	577
adamc@671	578 if (r == 0) {
adamc@671	579 if (uw_db_begin(ctx))
adamc@671	580 uw_error(ctx, BOUNDED_RETRY, "Error running SQL BEGIN");
adamc@682	581
adamc@671	582 uw_handle(ctx, path);
adamc@671	583 }
adamc@671	584
adamc@671	585 return r;
adamc@671	586 }
adamc@671	587
adamc@772	588 uw_Basis_client uw_Basis_self(uw_context ctx) {
adamc@682	589 if (ctx->client == NULL)
adamc@682	590 uw_error(ctx, FATAL, "Call to Basis.self() from page that has only server-side code");
adamc@682	591
adamc@682	592 return ctx->client->id;
adamc@682	593 }
adamc@682	594
adamc@425	595 void uw_pop_cleanup(uw_context ctx) {
adamc@425	596 if (ctx->cleanup_front == ctx->cleanup)
adamc@425	597 uw_error(ctx, FATAL, "Attempt to pop from empty cleanup action stack");
adamc@425	598
adamc@425	599 --ctx->cleanup_front;
adamc@425	600 ctx->cleanup_front->func(ctx->cleanup_front->arg);
adamc@425	601 }
adamc@425	602
adamc@311	603 char *uw_error_message(uw_context ctx) {
adamc@167	604 return ctx->error_message;
adamc@167	605 }
adamc@167	606
adamc@737	607 extern int uw_input_num(const char*);
adamc@144	608
adamc@759	609 static input *INP(uw_context ctx) {
adamc@759	610 if (ctx->cur_container == NULL)
adamc@759	611 return ctx->inputs;
adamc@759	612 else if (ctx->cur_container->kind == SUBFORM)
adamc@759	613 return ctx->cur_container->data.subform.fields;
adamc@759	614 else if (ctx->cur_container->kind == ENTRY)
adamc@759	615 return ctx->cur_container->data.entry.fields;
adamc@759	616 else
adamc@760	617 uw_error(ctx, FATAL, "INP: Wrong kind (%d, %p)", ctx->cur_container->kind, ctx->cur_container);
adamc@759	618 }
adamc@759	619
adamc@760	620 static void adjust_pointer(input *ptr, input old_start, input *new_start, size_t len) {
adamc@760	621 if (ptr != NULL && ptr >= old_start && *ptr < old_start + len)
adamc@760	622 *ptr += new_start - old_start;
adamc@760	623 }
adamc@760	624
adamc@760	625 static void adjust_input(input x, input old_start, input *new_start, size_t len) {
adamc@759	626 switch (x->kind) {
adamc@759	627 case SUBFORM:
adamc@760	628 adjust_pointer(&x->data.subform.fields, old_start, new_start, len);
adamc@760	629 adjust_pointer(&x->data.subform.parent, old_start, new_start, len);
adamc@759	630 break;
adamc@759	631 case SUBFORMS:
adamc@760	632 adjust_pointer(&x->data.subforms.entries, old_start, new_start, len);
adamc@760	633 adjust_pointer(&x->data.subforms.parent, old_start, new_start, len);
adamc@759	634 break;
adamc@759	635 case ENTRY:
adamc@760	636 adjust_pointer(&x->data.entry.fields, old_start, new_start, len);
adamc@760	637 adjust_pointer(&x->data.entry.next, old_start, new_start, len);
adamc@760	638 adjust_pointer(&x->data.entry.parent, old_start, new_start, len);
adamc@759	639 }
adamc@759	640 }
adamc@759	641
adamc@759	642 static input *check_input_space(uw_context ctx, size_t len) {
adamc@759	643 size_t i;
adamc@759	644 input *r;
adamc@759	645
adamc@759	646 if (ctx->used_subinputs + len >= ctx->n_subinputs) {
adamc@759	647 input new_subinputs = realloc(ctx->subinputs, sizeof(input) (ctx->used_subinputs + len));
adamc@759	648 size_t offset = new_subinputs - ctx->subinputs;
adamc@759	649
adamc@760	650 if (ctx->subinputs != new_subinputs) {
adamc@760	651 for (i = 0; i < ctx->used_subinputs; ++i)
adamc@760	652 adjust_input(&new_subinputs[i], ctx->subinputs, new_subinputs, ctx->used_subinputs);
adamc@760	653 for (i = 0; i < uw_inputs_len; ++i)
adamc@760	654 adjust_input(&ctx->inputs[i], ctx->subinputs, new_subinputs, ctx->used_subinputs);
adamc@760	655
adamc@760	656 adjust_pointer(&ctx->cur_container, ctx->subinputs, new_subinputs, ctx->used_subinputs);
adamc@760	657
adamc@760	658 ctx->n_subinputs = ctx->used_subinputs + len;
adamc@760	659 ctx->subinputs = new_subinputs;
adamc@760	660 }
adamc@759	661 }
adamc@759	662
adamc@759	663 r = &ctx->subinputs[ctx->used_subinputs];
adamc@759	664
adamc@759	665 for (i = 0; i < len; ++i)
adamc@759	666 ctx->subinputs[ctx->used_subinputs++].kind = UNUSED;
adamc@759	667
adamc@759	668 return r;
adamc@759	669 }
adamc@756	670
adamc@801	671 int uw_set_input(uw_context ctx, const char name, char value) {
adamc@756	672 if (!strcasecmp(name, ".b")) {
adamc@756	673 int n = uw_input_num(value);
adamc@756	674 input *inps;
adamc@756	675
adamc@801	676 if (n < 0) {
adamc@801	677 uw_set_error(ctx, "Bad subform name %s", value);
adamc@801	678 return -1;
adamc@801	679 }
adamc@801	680
adamc@801	681 if (n >= uw_inputs_len) {
adamc@801	682 uw_set_error(ctx, "For subform name %s, index %d is out of range", value, n);
adamc@801	683 return -1;
adamc@801	684 }
adamc@756	685
adamc@759	686 inps = check_input_space(ctx, uw_inputs_len);
adamc@759	687
adamc@759	688 INP(ctx)[n].kind = SUBFORM;
adamc@759	689 INP(ctx)[n].data.subform.parent = ctx->cur_container;
adamc@759	690 INP(ctx)[n].data.subform.fields = inps;
adamc@759	691 ctx->cur_container = &INP(ctx)[n];
adamc@756	692 } else if (!strcasecmp(name, ".e")) {
adamc@756	693 input *tmp;
adamc@756	694
adamc@801	695 if (ctx->cur_container == NULL) {
adamc@801	696 uw_set_error(ctx, "Unmatched subform closer");
adamc@801	697 return -1;
adamc@801	698 }
adamc@756	699
adamc@759	700 tmp = ctx->cur_container;
adamc@759	701 switch (tmp->kind) {
adamc@759	702 case SUBFORM:
adamc@759	703 ctx->cur_container = tmp->data.subform.parent;
adamc@759	704 tmp->data.subform.parent = NULL;
adamc@759	705 break;
adamc@759	706 case SUBFORMS:
adamc@759	707 ctx->cur_container = tmp->data.subforms.parent;
adamc@759	708 tmp->data.subforms.parent = NULL;
adamc@759	709 break;
adamc@759	710 case ENTRY:
adamc@759	711 ctx->cur_container = tmp->data.entry.parent;
adamc@759	712 break;
adamc@759	713 default:
adamc@801	714 uw_set_error(ctx, "uw_set_input: Wrong kind");
adamc@801	715 return -1;
adamc@759	716 }
adamc@759	717 } else if (!strcasecmp(name, ".s")) {
adamc@759	718 int n = uw_input_num(value);
adamc@759	719
adamc@801	720 if (n < 0) {
adamc@801	721 uw_set_error(ctx, "Bad subforms name %s", value);
adamc@801	722 return -1;
adamc@801	723 }
adamc@801	724
adamc@801	725 if (n >= uw_inputs_len) {
adamc@801	726 uw_set_error(ctx, "For subforms name %s, index %d is out of range", value, n);
adamc@801	727 return -1;
adamc@801	728 }
adamc@759	729
adamc@759	730 INP(ctx)[n].kind = SUBFORMS;
adamc@759	731 INP(ctx)[n].data.subforms.parent = ctx->cur_container;
adamc@759	732 INP(ctx)[n].data.subforms.entries = NULL;
adamc@759	733 ctx->cur_container = &INP(ctx)[n];
adamc@759	734 } else if (!strcasecmp(name, ".i")) {
adamc@759	735 input *inps;
adamc@759	736
adamc@801	737 if (!ctx->cur_container) {
adamc@801	738 uw_set_error(ctx, "New entry without container");
adamc@801	739 return -1;
adamc@801	740 }
adamc@801	741
adamc@801	742 if (ctx->cur_container->kind != SUBFORMS) {
adamc@801	743 uw_set_error(ctx, "Bad kind for entry parent");
adamc@801	744 return -1;
adamc@801	745 }
adamc@759	746
adamc@759	747 inps = check_input_space(ctx, uw_inputs_len + 1);
adamc@759	748
adamc@759	749 inps->kind = ENTRY;
adamc@759	750 inps->data.entry.parent = ctx->cur_container;
adamc@759	751 inps->data.entry.next = ctx->cur_container->data.subforms.entries;
adamc@759	752 ctx->cur_container->data.subforms.entries = inps;
adamc@759	753
adamc@759	754 inps->data.entry.fields = inps+1;
adamc@759	755 ctx->cur_container = inps;
adamc@756	756 } else {
adamc@756	757 int n = uw_input_num(name);
adamc@756	758
adamc@801	759 if (n < 0) {
adamc@801	760 uw_set_error(ctx, "Bad input name %s", name);
adamc@801	761 return -1;
adamc@801	762 }
adamc@801	763
adamc@801	764 if (n >= uw_inputs_len) {
adamc@801	765 uw_set_error(ctx, "For input name %s, index %d is out of range", name, n);
adamc@801	766 return -1;
adamc@801	767 }
adamc@756	768
adamc@756	769 INP(ctx)[n].kind = NORMAL;
adamc@756	770 INP(ctx)[n].data.normal = value;
adamc@756	771 }
adamc@801	772
adamc@801	773 return 0;
adamc@144	774 }
adamc@144	775
adamc@311	776 char *uw_get_input(uw_context ctx, int n) {
adamc@169	777 if (n < 0)
adamc@311	778 uw_error(ctx, FATAL, "Negative input index %d", n);
adamc@311	779 if (n >= uw_inputs_len)
adamc@311	780 uw_error(ctx, FATAL, "Out-of-bounds input index %d", n);
adamc@737	781
adamc@756	782 switch (INP(ctx)[n].kind) {
adamc@737	783 case UNSET:
adamc@737	784 return NULL;
adamc@739	785 case FIL:
adamc@739	786 uw_error(ctx, FATAL, "Tried to read a file form input as normal");
adamc@756	787 case SUBFORM:
adamc@756	788 uw_error(ctx, FATAL, "Tried to read a subform form input as normal");
adamc@759	789 case SUBFORMS:
adamc@759	790 uw_error(ctx, FATAL, "Tried to read a subforms form input as normal");
adamc@759	791 case ENTRY:
adamc@759	792 uw_error(ctx, FATAL, "Tried to read an entry form input as normal");
adamc@737	793 case NORMAL:
adamc@756	794 return INP(ctx)[n].data.normal;
adamc@737	795 default:
adamc@737	796 uw_error(ctx, FATAL, "Impossible input kind");
adamc@737	797 }
adamc@138	798 }
adamc@138	799
adamc@311	800 char *uw_get_optional_input(uw_context ctx, int n) {
adamc@190	801 if (n < 0)
adamc@311	802 uw_error(ctx, FATAL, "Negative input index %d", n);
adamc@311	803 if (n >= uw_inputs_len)
adamc@311	804 uw_error(ctx, FATAL, "Out-of-bounds input index %d", n);
adamc@737	805
adamc@756	806 switch (INP(ctx)[n].kind) {
adamc@737	807 case UNSET:
adamc@737	808 return "";
adamc@739	809 case FIL:
adamc@739	810 uw_error(ctx, FATAL, "Tried to read a file form input as normal");
adamc@756	811 case SUBFORM:
adamc@756	812 uw_error(ctx, FATAL, "Tried to read a subform form input as normal");
adamc@759	813 case SUBFORMS:
adamc@759	814 uw_error(ctx, FATAL, "Tried to read a subforms form input as normal");
adamc@759	815 case ENTRY:
adamc@759	816 uw_error(ctx, FATAL, "Tried to read an entry form input as normal");
adamc@737	817 case NORMAL:
adamc@756	818 return INP(ctx)[n].data.normal;
adamc@737	819 default:
adamc@737	820 uw_error(ctx, FATAL, "Impossible input kind");
adamc@737	821 }
adamc@737	822 }
adamc@737	823
adamc@801	824 int uw_set_file_input(uw_context ctx, const char *name, uw_Basis_file f) {
adamc@737	825 int n = uw_input_num(name);
adamc@737	826
adamc@801	827 if (n < 0) {
adamc@801	828 uw_set_error(ctx, "Bad file input name %s", name);
adamc@801	829 return -1;
adamc@801	830 }
adamc@801	831
adamc@801	832 if (n >= uw_inputs_len) {
adamc@801	833 uw_set_error(ctx, "For file input name %s, index %d is out of range", name, n);
adamc@801	834 return -1;
adamc@801	835 }
adamc@737	836
adamc@739	837 ctx->inputs[n].kind = FIL;
adamc@739	838 ctx->inputs[n].data.file = f;
adamc@801	839
adamc@801	840 return 0;
adamc@737	841 }
adamc@737	842
adamc@739	843 void *uw_malloc(uw_context ctx, size_t len);
adamc@739	844
adamc@760	845
adamc@760	846 static void parents(input *inp) {
adamc@760	847 printf("Stack: %p\n", inp);
adamc@760	848 while (inp) {
adamc@760	849 switch (inp->kind) {
adamc@760	850 case NORMAL:
adamc@760	851 printf("Normal(%p)\n", inp);
adamc@760	852 break;
adamc@760	853 case FIL:
adamc@760	854 printf("File(%p)\n", inp);
adamc@760	855 break;
adamc@760	856 case SUBFORM:
adamc@760	857 printf("Subform; fields = %p\n", inp->data.subform.fields);
adamc@760	858 inp = inp->data.subform.parent;
adamc@760	859 break;
adamc@760	860 case SUBFORMS:
adamc@760	861 printf("Subforms; entries = %p\n", inp->data.subforms.entries);
adamc@760	862 inp = inp->data.subforms.parent;
adamc@760	863 break;
adamc@760	864 case ENTRY:
adamc@760	865 printf("Entry; fields = %p; next = %p\n", inp->data.entry.fields, inp->data.entry.next);
adamc@760	866 inp = inp->data.entry.parent;
adamc@760	867 break;
adamc@760	868 default:
adamc@760	869 inp = NULL;
adamc@760	870 }
adamc@760	871 }
adamc@760	872 }
adamc@760	873
adamc@739	874 uw_Basis_file uw_get_file_input(uw_context ctx, int n) {
adamc@737	875 if (n < 0)
adamc@737	876 uw_error(ctx, FATAL, "Negative file input index %d", n);
adamc@737	877 if (n >= uw_inputs_len)
adamc@737	878 uw_error(ctx, FATAL, "Out-of-bounds file input index %d", n);
adamc@737	879
adamc@756	880 switch (INP(ctx)[n].kind) {
adamc@737	881 case UNSET:
adamc@737	882 {
adamc@739	883 char *data = uw_malloc(ctx, 0);
adamc@740	884 uw_Basis_file f = {NULL, "", {0, data}};
adamc@739	885 return f;
adamc@737	886 }
adamc@739	887 case FIL:
adamc@756	888 return INP(ctx)[n].data.file;
adamc@737	889 case NORMAL:
adamc@737	890 uw_error(ctx, FATAL, "Tried to read a normal form input as files");
adamc@756	891 case SUBFORM:
adamc@756	892 uw_error(ctx, FATAL, "Tried to read a subform form input as files");
adamc@759	893 case SUBFORMS:
adamc@759	894 uw_error(ctx, FATAL, "Tried to read a subforms form input as files");
adamc@759	895 case ENTRY:
adamc@759	896 uw_error(ctx, FATAL, "Tried to read an entry form input as files");
adamc@737	897 default:
adamc@737	898 uw_error(ctx, FATAL, "Impossible input kind");
adamc@737	899 }
adamc@190	900 }
adamc@190	901
adamc@756	902 void uw_enter_subform(uw_context ctx, int n) {
adamc@756	903 if (n < 0)
adamc@756	904 uw_error(ctx, FATAL, "Negative subform index %d", n);
adamc@756	905 if (n >= uw_inputs_len)
adamc@756	906 uw_error(ctx, FATAL, "Out-of-bounds subform index %d", n);
adamc@756	907
adamc@756	908 switch (INP(ctx)[n].kind) {
adamc@756	909 case UNSET:
adamc@756	910 uw_error(ctx, FATAL, "Missing subform");
adamc@756	911 case FIL:
adamc@756	912 uw_error(ctx, FATAL, "Tried to read a file form input as subform");
adamc@756	913 case NORMAL:
adamc@756	914 uw_error(ctx, FATAL, "Tried to read a normal form input as subform");
adamc@759	915 case SUBFORMS:
adamc@759	916 uw_error(ctx, FATAL, "Tried to read a subforms form input as subform");
adamc@759	917 case ENTRY:
adamc@759	918 uw_error(ctx, FATAL, "Tried to read an entry form input as subform");
adamc@756	919 case SUBFORM:
adamc@759	920 INP(ctx)[n].data.subform.parent = ctx->cur_container;
adamc@760	921 ctx->cur_container = &INP(ctx)[n];
adamc@756	922 return;
adamc@756	923 default:
adamc@756	924 uw_error(ctx, FATAL, "Impossible input kind");
adamc@756	925 }
adamc@756	926 }
adamc@756	927
adamc@756	928 void uw_leave_subform(uw_context ctx) {
adamc@756	929 input *tmp;
adamc@756	930
adamc@759	931 if (ctx->cur_container == NULL)
adamc@756	932 uw_error(ctx, FATAL, "Unmatched uw_leave_subform");
adamc@756	933
adamc@759	934 tmp = ctx->cur_container;
adamc@759	935 ctx->cur_container = tmp->data.subform.parent;
adamc@759	936 tmp->data.subform.parent = NULL;
adamc@759	937 }
adamc@759	938
adamc@759	939 int uw_enter_subforms(uw_context ctx, int n) {
adamc@759	940 input *inps;
adamc@759	941
adamc@759	942 if (n < 0)
adamc@759	943 uw_error(ctx, FATAL, "Negative subforms index %d", n);
adamc@759	944 if (n >= uw_inputs_len)
adamc@759	945 uw_error(ctx, FATAL, "Out-of-bounds subforms index %d", n);
adamc@759	946
adamc@759	947 switch (INP(ctx)[n].kind) {
adamc@759	948 case UNSET:
adamc@759	949 uw_error(ctx, FATAL, "Missing subforms");
adamc@759	950 case FIL:
adamc@759	951 uw_error(ctx, FATAL, "Tried to read a file form input as subforms");
adamc@759	952 case NORMAL:
adamc@759	953 uw_error(ctx, FATAL, "Tried to read a normal form input %p as subforms", &INP(ctx)[n]);
adamc@759	954 case SUBFORM:
adamc@759	955 uw_error(ctx, FATAL, "Tried to read a subform form input as subforms");
adamc@759	956 case ENTRY:
adamc@759	957 uw_error(ctx, FATAL, "Tried to read an entry form input as subforms");
adamc@759	958 case SUBFORMS:
adamc@759	959 inps = INP(ctx)[n].data.subforms.entries;
adamc@759	960 if (inps) {
adamc@759	961 INP(ctx)[n].data.subforms.parent = ctx->cur_container;
adamc@759	962 ctx->cur_container = INP(ctx)[n].data.subforms.entries;
adamc@759	963 return 1;
adamc@759	964 } else
adamc@759	965 return 0;
adamc@759	966 default:
adamc@759	967 uw_error(ctx, FATAL, "Impossible input kind");
adamc@759	968 }
adamc@759	969 }
adamc@759	970
adamc@759	971 int uw_next_entry(uw_context ctx) {
adamc@759	972 if (ctx->cur_container == NULL)
adamc@759	973 uw_error(ctx, FATAL, "uw_next_entry(NULL)");
adamc@759	974
adamc@759	975 switch (ctx->cur_container->kind) {
adamc@759	976 case UNSET:
adamc@759	977 uw_error(ctx, FATAL, "Missing entry");
adamc@759	978 case FIL:
adamc@759	979 uw_error(ctx, FATAL, "Tried to read a file form input as entry");
adamc@759	980 case NORMAL:
adamc@759	981 uw_error(ctx, FATAL, "Tried to read a normal form input as entry");
adamc@759	982 case SUBFORM:
adamc@759	983 uw_error(ctx, FATAL, "Tried to read a subform form input as entry");
adamc@759	984 case SUBFORMS:
adamc@759	985 uw_error(ctx, FATAL, "Tried to read a subforms form input as entry");
adamc@759	986 case ENTRY:
adamc@759	987 if (ctx->cur_container->data.entry.next) {
adamc@759	988 ctx->cur_container = ctx->cur_container->data.entry.next;
adamc@759	989 return 1;
adamc@759	990 } else {
adamc@759	991 ctx->cur_container = ctx->cur_container->data.entry.parent->data.subforms.parent;
adamc@759	992 return 0;
adamc@759	993 }
adamc@759	994 default:
adamc@759	995 uw_error(ctx, FATAL, "Impossible input kind");
adamc@759	996 }
adamc@756	997 }
adamc@756	998
adamc@643	999 void uw_set_script_header(uw_context ctx, const char *s) {
adamc@643	1000 ctx->script_header = s;
adamc@643	1001 }
adamc@643	1002
adamc@667	1003 void uw_set_url_prefix(uw_context ctx, const char *s) {
adamc@667	1004 ctx->url_prefix = s;
adamc@667	1005 }
adamc@667	1006
adamc@693	1007 void uw_set_needs_push(uw_context ctx, int n) {
adamc@693	1008 ctx->needs_push = n;
adamc@693	1009 }
adamc@693	1010
adamc@736	1011 void uw_set_needs_sig(uw_context ctx, int n) {
adamc@736	1012 ctx->needs_sig = n;
adamc@736	1013 }
adamc@736	1014
adamc@667	1015
adamc@667	1016 static void buf_check_ctx(uw_context ctx, buf b, size_t extra, const char desc) {
adamc@666	1017 if (b->back - b->front < extra) {
adamc@666	1018 size_t desired = b->front - b->start + extra, next;
adamc@136	1019 char *new_heap;
adamc@136	1020
adamc@666	1021 next = b->back - b->start;
adamc@317	1022 if (next == 0)
adamc@317	1023 next = 1;
adamc@317	1024 for (; next < desired; next *= 2);
adamc@136	1025
adamc@666	1026 new_heap = realloc(b->start, next);
adamc@666	1027 b->front = new_heap + (b->front - b->start);
adamc@666	1028 b->back = new_heap + next;
adamc@136	1029
adamc@667	1030 if (new_heap != b->start) {
adamc@666	1031 b->start = new_heap;
adamc@666	1032 uw_error(ctx, UNLIMITED_RETRY, "Couldn't allocate new %s contiguously", desc);
adamc@136	1033 }
adamc@136	1034
adamc@666	1035 b->start = new_heap;
adamc@136	1036 }
adamc@136	1037 }
adamc@136	1038
adamc@832	1039 void uw_check_heap(uw_context ctx, size_t extra) {
adamc@667	1040 buf_check_ctx(ctx, &ctx->heap, extra, "heap chunk");
adamc@666	1041 }
adamc@666	1042
adamc@832	1043 char *uw_heap_front(uw_context ctx) {
adamc@832	1044 return ctx->heap.front;
adamc@832	1045 }
adamc@832	1046
adamc@832	1047 void uw_set_heap_front(uw_context ctx, char *fr) {
adamc@832	1048 ctx->heap.front = fr;
adamc@832	1049 }
adamc@832	1050
adamc@311	1051 void *uw_malloc(uw_context ctx, size_t len) {
adamc@136	1052 void *result;
adamc@136	1053
adamc@311	1054 uw_check_heap(ctx, len);
adamc@136	1055
adamc@666	1056 result = ctx->heap.front;
adamc@666	1057 ctx->heap.front += len;
adamc@136	1058 return result;
adamc@117	1059 }
adamc@117	1060
adamc@323	1061 void uw_begin_region(uw_context ctx) {
adamc@666	1062 regions r = (regions ) ctx->heap.front;
adamc@323	1063
adamc@323	1064 uw_check_heap(ctx, sizeof(regions));
adamc@323	1065
adamc@666	1066 ctx->heap.front += sizeof(regions);
adamc@323	1067
adamc@323	1068 r->next = ctx->regions;
adamc@323	1069 ctx->regions = r;
adamc@323	1070 }
adamc@323	1071
adamc@323	1072 void uw_end_region(uw_context ctx) {
adamc@323	1073 regions *r = ctx->regions;
adamc@323	1074
adamc@323	1075 if (r == NULL)
adamc@323	1076 uw_error(ctx, FATAL, "Region stack underflow");
adamc@323	1077
adamc@666	1078 ctx->heap.front = (char *) r;
adamc@323	1079 ctx->regions = r->next;
adamc@323	1080 }
adamc@323	1081
adamc@324	1082 void uw_memstats(uw_context ctx) {
adamc@666	1083 printf("Headers: %d/%d\n", buf_used(&ctx->outHeaders), buf_avail(&ctx->outHeaders));
adamc@666	1084 printf("Script: %d/%d\n", buf_used(&ctx->script), buf_avail(&ctx->script));
adamc@666	1085 printf("Page: %d/%d\n", buf_used(&ctx->page), buf_avail(&ctx->page));
adamc@666	1086 printf("Heap: %d/%d\n", buf_used(&ctx->heap), buf_avail(&ctx->heap));
adamc@324	1087 }
adamc@324	1088
adamc@311	1089 int uw_send(uw_context ctx, int sock) {
adamc@666	1090 int n = uw_really_send(sock, ctx->outHeaders.start, ctx->outHeaders.front - ctx->outHeaders.start);
adamc@462	1091
adamc@462	1092 if (n < 0)
adamc@462	1093 return n;
adamc@462	1094
adamc@462	1095 n = uw_really_send(sock, "\r\n", 2);
adamc@462	1096
adamc@462	1097 if (n < 0)
adamc@462	1098 return n;
adamc@462	1099
adamc@666	1100 return uw_really_send(sock, ctx->page.start, ctx->page.front - ctx->page.start);
adamc@462	1101 }
adamc@462	1102
adamc@856	1103 int uw_print(uw_context ctx, int fd) {
adamc@856	1104 int n = uw_really_write(fd, ctx->outHeaders.start, ctx->outHeaders.front - ctx->outHeaders.start);
adamc@856	1105
adamc@856	1106 if (n < 0)
adamc@856	1107 return n;
adamc@856	1108
adamc@856	1109 n = uw_really_write(fd, "\r\n", 2);
adamc@856	1110
adamc@856	1111 if (n < 0)
adamc@856	1112 return n;
adamc@856	1113
adamc@856	1114 return uw_really_write(fd, ctx->page.start, ctx->page.front - ctx->page.start);
adamc@856	1115 }
adamc@856	1116
adamc@860	1117 int uw_output(uw_context ctx, int (output)(void data, char buf, size_t len), void data) {
adamc@860	1118 int n = output(data, ctx->outHeaders.start, ctx->outHeaders.front - ctx->outHeaders.start);
adamc@860	1119
adamc@860	1120 if (n < 0)
adamc@860	1121 return n;
adamc@860	1122
adamc@860	1123 n = output(data, "\r\n", 2);
adamc@860	1124
adamc@860	1125 if (n < 0)
adamc@860	1126 return n;
adamc@860	1127
adamc@860	1128 return output(data, ctx->page.start, ctx->page.front - ctx->page.start);
adamc@860	1129 }
adamc@860	1130
adamc@462	1131 static void uw_check_headers(uw_context ctx, size_t extra) {
adamc@667	1132 buf_check(&ctx->outHeaders, extra);
adamc@462	1133 }
adamc@462	1134
adamc@462	1135 void uw_write_header(uw_context ctx, uw_Basis_string s) {
adamc@462	1136 int len = strlen(s);
adamc@462	1137
adamc@462	1138 uw_check_headers(ctx, len + 1);
adamc@666	1139 strcpy(ctx->outHeaders.front, s);
adamc@666	1140 ctx->outHeaders.front += len;
adamc@562	1141 }
adamc@562	1142
adamc@562	1143 static void uw_check_script(uw_context ctx, size_t extra) {
adamc@667	1144 buf_check(&ctx->script, extra);
adamc@562	1145 }
adamc@562	1146
adamc@562	1147 void uw_write_script(uw_context ctx, uw_Basis_string s) {
adamc@562	1148 int len = strlen(s);
adamc@562	1149
adamc@562	1150 uw_check_script(ctx, len + 1);
adamc@666	1151 strcpy(ctx->script.front, s);
adamc@666	1152 ctx->script.front += len;
adamc@562	1153 }
adamc@562	1154
adamc@645	1155 const char *uw_Basis_get_script(uw_context ctx, uw_unit u) {
adamc@667	1156 if (ctx->script_header[0] == 0)
adamc@667	1157 return "";
adamc@696	1158 else if (buf_used(&ctx->script) == 0)
adamc@696	1159 return ctx->script_header;
adamc@667	1160 else {
adamc@695	1161 char *r = uw_malloc(ctx, strlen(ctx->script_header) + 42 + buf_used(&ctx->script));
adamc@695	1162 sprintf(r, "%s<script type=\"text/javascript\">%s</script>",
adamc@673	1163 ctx->script_header,
adamc@673	1164 ctx->script.start);
adamc@565	1165 return r;
adamc@565	1166 }
adamc@565	1167 }
adamc@565	1168
adamc@695	1169 uw_Basis_string uw_Basis_maybe_onload(uw_context ctx, uw_Basis_string s) {
adamc@695	1170 if (s[0] == 0)
adamc@695	1171 return "";
adamc@695	1172 else {
adamc@695	1173 char *r = uw_malloc(ctx, 11 + strlen(s));
adamc@695	1174 sprintf(r, " onload='%s'", s);
adamc@695	1175 return r;
adamc@695	1176 }
adamc@695	1177 }
adamc@695	1178
adamc@736	1179 extern uw_Basis_string uw_cookie_sig(uw_context);
adamc@736	1180
adamc@694	1181 const char *uw_Basis_get_settings(uw_context ctx, uw_unit u) {
adamc@736	1182 if (ctx->client == NULL) {
adamc@736	1183 if (ctx->needs_sig) {
adamc@736	1184 char *sig = uw_cookie_sig(ctx);
adamc@736	1185 char *r = uw_malloc(ctx, strlen(sig) + 8);
adamc@736	1186 sprintf(r, "sig=\"%s\";", sig);
adamc@736	1187 return r;
adamc@736	1188 }
adamc@736	1189 else
adamc@736	1190 return "";
adamc@736	1191 } else {
adamc@736	1192 char *sig = ctx->needs_sig ? uw_cookie_sig(ctx) : "";
adamc@736	1193 char r = uw_malloc(ctx, 59 + 3 INTS_MAX + strlen(ctx->url_prefix)
adamc@736	1194 + (ctx->needs_sig ? strlen(sig) + 7 : 0));
adamc@736	1195 sprintf(r, "client_id=%u;client_pass=%d;url_prefix=\"%s\";timeout=%d;%s%s%slistener();",
adamc@682	1196 ctx->client->id,
adamc@682	1197 ctx->client->pass,
adamc@679	1198 ctx->url_prefix,
adamc@736	1199 ctx->timeout,
adamc@736	1200 ctx->needs_sig ? "sig=\"" : "",
adamc@736	1201 sig,
adamc@736	1202 ctx->needs_sig ? "\";" : "");
adamc@679	1203 return r;
adamc@668	1204 }
adamc@667	1205 }
adamc@667	1206
adamc@574	1207 uw_Basis_string uw_Basis_jsifyString(uw_context ctx, uw_Basis_string s) {
adamc@574	1208 char r, s2;
adamc@574	1209
adamc@574	1210 uw_check_heap(ctx, strlen(s) * 4 + 2);
adamc@574	1211
adamc@666	1212 r = s2 = ctx->heap.front;
adamc@574	1213 *s2++ = '"';
adamc@574	1214
adamc@574	1215 for (; *s; s++) {
adamc@574	1216 char c = *s;
adamc@574	1217
adamc@574	1218 switch (c) {
adamc@574	1219 case '"':
adamc@574	1220 strcpy(s2, "\\\"");
adamc@574	1221 s2 += 2;
adamc@574	1222 break;
adamc@574	1223 case '\\':
adamc@574	1224 strcpy(s2, "\\\\");
adamc@574	1225 s2 += 2;
adamc@574	1226 break;
adamc@574	1227 default:
adamc@574	1228 if (isprint(c))
adamc@574	1229 *s2++ = c;
adamc@574	1230 else {
adamc@574	1231 sprintf(s2, "\\%3o", c);
adamc@574	1232 s2 += 4;
adamc@574	1233 }
adamc@574	1234 }
adamc@574	1235 }
adamc@574	1236
adamc@574	1237 strcpy(s2, "\"");
adamc@666	1238 ctx->heap.front = s2 + 1;
adamc@574	1239 return r;
adamc@574	1240 }
adamc@574	1241
adamc@574	1242 uw_Basis_string uw_Basis_jsifyString_ws(uw_context ctx, uw_Basis_string s) {
adamc@574	1243 char r, s2;
adamc@574	1244
adamc@574	1245 uw_check_script(ctx, strlen(s) * 4 + 2);
adamc@574	1246
adamc@666	1247 r = s2 = ctx->script.front;
adamc@574	1248 *s2++ = '"';
adamc@574	1249
adamc@574	1250 for (; *s; s++) {
adamc@574	1251 char c = *s;
adamc@574	1252
adamc@574	1253 switch (c) {
adamc@577	1254 case '\'':
adamc@574	1255 strcpy(s2, "\\\"");
adamc@574	1256 s2 += 2;
adamc@574	1257 break;
adamc@574	1258 case '\\':
adamc@574	1259 strcpy(s2, "\\\\");
adamc@574	1260 s2 += 2;
adamc@574	1261 break;
adamc@574	1262 default:
adamc@574	1263 if (isprint(c))
adamc@574	1264 *s2++ = c;
adamc@574	1265 else {
adamc@574	1266 sprintf(s2, "\\%3o", c);
adamc@574	1267 s2 += 4;
adamc@574	1268 }
adamc@574	1269 }
adamc@574	1270 }
adamc@574	1271
adamc@574	1272 strcpy(s2, "\"");
adamc@666	1273 ctx->script.front = s2 + 1;
adamc@574	1274 return r;
adamc@574	1275 }
adamc@574	1276
adamc@682	1277 char *uw_Basis_jsifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	1278 if (ctx->client == NULL \|\| chn.cli != ctx->client->id)
adamc@682	1279 return "null";
adamc@682	1280 else {
adamc@682	1281 int len;
adamc@682	1282 char *r;
adamc@682	1283
adamc@682	1284 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	1285 r = ctx->heap.front;
adamc@682	1286 sprintf(r, "%u%n", chn.chn, &len);
adamc@682	1287 ctx->heap.front += len+1;
adamc@682	1288 return r;
adamc@682	1289 }
adamc@682	1290 }
adamc@682	1291
adamc@577	1292 uw_Basis_int uw_Basis_new_client_source(uw_context ctx, uw_Basis_string s) {
adamc@577	1293 int len;
adamc@577	1294 size_t s_len = strlen(s);
adamc@562	1295
adamc@577	1296 uw_check_script(ctx, 12 + INTS_MAX + s_len);
adamc@666	1297 sprintf(ctx->script.front, "var s%d=sc(%n", ctx->source_count, &len);
adamc@666	1298 ctx->script.front += len;
adamc@666	1299 strcpy(ctx->script.front, s);
adamc@666	1300 ctx->script.front += s_len;
adamc@666	1301 strcpy(ctx->script.front, ");");
adamc@666	1302 ctx->script.front += 2;
adamc@562	1303
adamc@565	1304 return ctx->source_count++;
adamc@117	1305 }
adamc@117	1306
adamc@577	1307 uw_unit uw_Basis_set_client_source(uw_context ctx, uw_Basis_int n, uw_Basis_string s) {
adamc@577	1308 int len;
adamc@577	1309 size_t s_len = strlen(s);
adamc@577	1310
adamc@577	1311 uw_check_script(ctx, 6 + INTS_MAX + s_len);
adamc@844	1312 sprintf(ctx->script.front, "sv(s%d,%n", (int)n, &len);
adamc@666	1313 ctx->script.front += len;
adamc@666	1314 strcpy(ctx->script.front, s);
adamc@666	1315 ctx->script.front += s_len;
adamc@844	1316 strcpy(ctx->script.front, ");");
adamc@844	1317 ctx->script.front += 2;
adamc@577	1318
adamc@577	1319 return uw_unit_v;
adamc@577	1320 }
adamc@577	1321
adamc@311	1322 static void uw_check(uw_context ctx, size_t extra) {
adamc@667	1323 buf_check(&ctx->page, extra);
adamc@117	1324 }
adamc@117	1325
adamc@311	1326 static void uw_writec_unsafe(uw_context ctx, char c) {
adamc@666	1327 *(ctx->page.front)++ = c;
adamc@117	1328 }
adamc@117	1329
adamc@311	1330 void uw_writec(uw_context ctx, char c) {
adamc@311	1331 uw_check(ctx, 1);
adamc@311	1332 uw_writec_unsafe(ctx, c);
adamc@117	1333 }
adamc@117	1334
adamc@311	1335 static void uw_write_unsafe(uw_context ctx, const char* s) {
adamc@117	1336 int len = strlen(s);
adamc@666	1337 memcpy(ctx->page.front, s, len);
adamc@666	1338 ctx->page.front += len;
adamc@117	1339 }
adamc@117	1340
adamc@311	1341 void uw_write(uw_context ctx, const char* s) {
adamc@311	1342 uw_check(ctx, strlen(s) + 1);
adamc@311	1343 uw_write_unsafe(ctx, s);
adamc@666	1344 *ctx->page.front = 0;
adamc@102	1345 }
adamc@106	1346
adamc@311	1347 char *uw_Basis_attrifyInt(uw_context ctx, uw_Basis_int n) {
adamc@136	1348 char *result;
adamc@136	1349 int len;
adamc@311	1350 uw_check_heap(ctx, INTS_MAX);
adamc@666	1351 result = ctx->heap.front;
adamc@276	1352 sprintf(result, "%lld%n", n, &len);
adamc@666	1353 ctx->heap.front += len+1;
adamc@136	1354 return result;
adamc@106	1355 }
adamc@106	1356
adamc@311	1357 char *uw_Basis_attrifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@136	1358 char *result;
adamc@136	1359 int len;
adamc@311	1360 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	1361 result = ctx->heap.front;
adamc@136	1362 sprintf(result, "%g%n", n, &len);
adamc@666	1363 ctx->heap.front += len+1;
adamc@136	1364 return result;
adamc@106	1365 }
adamc@106	1366
adamc@311	1367 char *uw_Basis_attrifyString(uw_context ctx, uw_Basis_string s) {
adamc@136	1368 int len = strlen(s);
adamc@136	1369 char result, p;
adamc@311	1370 uw_check_heap(ctx, len * 6 + 1);
adamc@136	1371
adamc@666	1372 result = p = ctx->heap.front;
adamc@136	1373
adamc@136	1374 for (; *s; s++) {
adamc@136	1375 char c = *s;
adamc@136	1376
adamc@136	1377 if (c == '"') {
adamc@136	1378 strcpy(p, """);
adamc@136	1379 p += 6;
adamc@136	1380 } else if (c == '&') {
adamc@136	1381 strcpy(p, "&");
adamc@136	1382 p += 5;
adamc@136	1383 }
adamc@136	1384 else if (isprint(c))
adamc@136	1385 *p++ = c;
adamc@136	1386 else {
adamc@136	1387 int len2;
adamc@136	1388 sprintf(p, "&#%d;%n", c, &len2);
adamc@136	1389 p += len2;
adamc@136	1390 }
adamc@136	1391 }
adamc@136	1392
adamc@137	1393 *p++ = 0;
adamc@666	1394 ctx->heap.front = p;
adamc@136	1395 return result;
adamc@106	1396 }
adamc@106	1397
adamc@721	1398 char *uw_Basis_attrifyCss_class(uw_context ctx, uw_Basis_css_class s) {
adamc@721	1399 return s;
adamc@721	1400 }
adamc@721	1401
adamc@311	1402 static void uw_Basis_attrifyInt_w_unsafe(uw_context ctx, uw_Basis_int n) {
adamc@117	1403 int len;
adamc@117	1404
adamc@666	1405 sprintf(ctx->page.front, "%lld%n", n, &len);
adamc@666	1406 ctx->page.front += len;
adamc@106	1407 }
adamc@106	1408
adamc@428	1409 uw_unit uw_Basis_attrifyInt_w(uw_context ctx, uw_Basis_int n) {
adamc@311	1410 uw_check(ctx, INTS_MAX);
adamc@311	1411 uw_Basis_attrifyInt_w_unsafe(ctx, n);
adamc@428	1412
adamc@428	1413 return uw_unit_v;
adamc@106	1414 }
adamc@106	1415
adamc@428	1416 uw_unit uw_Basis_attrifyFloat_w(uw_context ctx, uw_Basis_float n) {
adamc@117	1417 int len;
adamc@117	1418
adamc@311	1419 uw_check(ctx, FLOATS_MAX);
adamc@666	1420 sprintf(ctx->page.front, "%g%n", n, &len);
adamc@666	1421 ctx->page.front += len;
adamc@428	1422
adamc@428	1423 return uw_unit_v;
adamc@117	1424 }
adamc@117	1425
adamc@428	1426 uw_unit uw_Basis_attrifyString_w(uw_context ctx, uw_Basis_string s) {
adamc@311	1427 uw_check(ctx, strlen(s) * 6);
adamc@117	1428
adamc@106	1429 for (; *s; s++) {
adamc@106	1430 char c = *s;
adamc@106	1431
adamc@106	1432 if (c == '"')
adamc@311	1433 uw_write_unsafe(ctx, """);
adamc@136	1434 else if (c == '&')
adamc@311	1435 uw_write_unsafe(ctx, "&");
adamc@106	1436 else if (isprint(c))
adamc@311	1437 uw_writec_unsafe(ctx, c);
adamc@106	1438 else {
adamc@311	1439 uw_write_unsafe(ctx, "&#");
adamc@311	1440 uw_Basis_attrifyInt_w_unsafe(ctx, c);
adamc@311	1441 uw_writec_unsafe(ctx, ';');
adamc@106	1442 }
adamc@106	1443 }
adamc@428	1444
adamc@428	1445 return uw_unit_v;
adamc@106	1446 }
adamc@120	1447
adamc@120	1448
adamc@311	1449 char *uw_Basis_urlifyInt(uw_context ctx, uw_Basis_int n) {
adamc@137	1450 int len;
adamc@137	1451 char *r;
adamc@137	1452
adamc@311	1453 uw_check_heap(ctx, INTS_MAX);
adamc@666	1454 r = ctx->heap.front;
adamc@276	1455 sprintf(r, "%lld%n", n, &len);
adamc@666	1456 ctx->heap.front += len+1;
adamc@137	1457 return r;
adamc@120	1458 }
adamc@120	1459
adamc@682	1460 char *uw_Basis_urlifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	1461 if (ctx->client == NULL \|\| chn.cli != ctx->client->id)
adamc@682	1462 return "";
adamc@682	1463 else {
adamc@682	1464 int len;
adamc@682	1465 char *r;
adamc@679	1466
adamc@682	1467 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	1468 r = ctx->heap.front;
adamc@682	1469 sprintf(r, "%u%n", chn.chn, &len);
adamc@682	1470 ctx->heap.front += len+1;
adamc@682	1471 return r;
adamc@682	1472 }
adamc@679	1473 }
adamc@679	1474
adamc@311	1475 char *uw_Basis_urlifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@137	1476 int len;
adamc@137	1477 char *r;
adamc@137	1478
adamc@311	1479 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	1480 r = ctx->heap.front;
adamc@137	1481 sprintf(r, "%g%n", n, &len);
adamc@666	1482 ctx->heap.front += len+1;
adamc@137	1483 return r;
adamc@120	1484 }
adamc@120	1485
adamc@311	1486 char *uw_Basis_urlifyString(uw_context ctx, uw_Basis_string s) {
adamc@137	1487 char r, p;
adamc@137	1488
adamc@311	1489 uw_check_heap(ctx, strlen(s) * 3 + 1);
adamc@137	1490
adamc@666	1491 for (r = p = ctx->heap.front; *s; s++) {
adamc@137	1492 char c = *s;
adamc@137	1493
adamc@137	1494 if (c == ' ')
adamc@137	1495 *p++ = '+';
adamc@137	1496 else if (isalnum(c))
adamc@137	1497 *p++ = c;
adamc@137	1498 else {
adamc@137	1499 sprintf(p, "%%%02X", c);
adamc@137	1500 p += 3;
adamc@137	1501 }
adamc@137	1502 }
adamc@137	1503
adamc@137	1504 *p++ = 0;
adamc@666	1505 ctx->heap.front = p;
adamc@137	1506 return r;
adamc@120	1507 }
adamc@120	1508
adamc@311	1509 char *uw_Basis_urlifyBool(uw_context ctx, uw_Basis_bool b) {
adamc@311	1510 if (b == uw_Basis_False)
adamc@186	1511 return "0";
adamc@186	1512 else
adamc@186	1513 return "1";
adamc@186	1514 }
adamc@186	1515
adamc@311	1516 static void uw_Basis_urlifyInt_w_unsafe(uw_context ctx, uw_Basis_int n) {
adamc@120	1517 int len;
adamc@120	1518
adamc@666	1519 sprintf(ctx->page.front, "%lld%n", n, &len);
adamc@666	1520 ctx->page.front += len;
adamc@120	1521 }
adamc@120	1522
adamc@428	1523 uw_unit uw_Basis_urlifyInt_w(uw_context ctx, uw_Basis_int n) {
adamc@311	1524 uw_check(ctx, INTS_MAX);
adamc@311	1525 uw_Basis_urlifyInt_w_unsafe(ctx, n);
adamc@428	1526
adamc@428	1527 return uw_unit_v;
adamc@120	1528 }
adamc@120	1529
adamc@682	1530 uw_unit uw_Basis_urlifyChannel_w(uw_context ctx, uw_Basis_channel chn) {
adamc@682	1531 if (ctx->client != NULL && chn.cli == ctx->client->id) {
adamc@682	1532 int len;
adamc@682	1533
adamc@682	1534 uw_check(ctx, INTS_MAX + 1);
adamc@682	1535 sprintf(ctx->page.front, "%u%n", chn.chn, &len);
adamc@682	1536 ctx->page.front += len;
adamc@682	1537 }
adamc@682	1538
adamc@679	1539 return uw_unit_v;
adamc@679	1540 }
adamc@679	1541
adamc@428	1542 uw_unit uw_Basis_urlifyFloat_w(uw_context ctx, uw_Basis_float n) {
adamc@120	1543 int len;
adamc@120	1544
adamc@311	1545 uw_check(ctx, FLOATS_MAX);
adamc@666	1546 sprintf(ctx->page.front, "%g%n", n, &len);
adamc@666	1547 ctx->page.front += len;
adamc@428	1548
adamc@428	1549 return uw_unit_v;
adamc@120	1550 }
adamc@120	1551
adamc@488	1552 uw_Basis_string uw_Basis_urlifyTime(uw_context ctx, uw_Basis_time t) {
adamc@488	1553 return uw_Basis_urlifyInt(ctx, t);
adamc@488	1554 }
adamc@488	1555
adamc@428	1556 uw_unit uw_Basis_urlifyString_w(uw_context ctx, uw_Basis_string s) {
adamc@311	1557 uw_check(ctx, strlen(s) * 3);
adamc@120	1558
adamc@120	1559 for (; *s; s++) {
adamc@120	1560 char c = *s;
adamc@120	1561
adamc@120	1562 if (c == ' ')
adamc@311	1563 uw_writec_unsafe(ctx, '+');
adamc@120	1564 else if (isalnum(c))
adamc@311	1565 uw_writec_unsafe(ctx, c);
adamc@120	1566 else {
adamc@666	1567 sprintf(ctx->page.front, "%%%02X", c);
adamc@666	1568 ctx->page.front += 3;
adamc@120	1569 }
adamc@120	1570 }
adamc@428	1571
adamc@428	1572 return uw_unit_v;
adamc@120	1573 }
adamc@120	1574
adamc@428	1575 uw_unit uw_Basis_urlifyBool_w(uw_context ctx, uw_Basis_bool b) {
adamc@311	1576 if (b == uw_Basis_False)
adamc@311	1577 uw_writec(ctx, '0');
adamc@186	1578 else
adamc@311	1579 uw_writec(ctx, '1');
adamc@428	1580
adamc@428	1581 return uw_unit_v;
adamc@186	1582 }
adamc@186	1583
adamc@120	1584
adamc@311	1585 static char uw_unurlify_advance(char s) {
adamc@144	1586 char *new_s = strchr(s, '/');
adamc@120	1587
adamc@120	1588 if (new_s)
adamc@120	1589 *new_s++ = 0;
adamc@120	1590 else
adamc@144	1591 new_s = strchr(s, 0);
adamc@144	1592
adamc@144	1593 return new_s;
adamc@144	1594 }
adamc@144	1595
adamc@311	1596 uw_Basis_int uw_Basis_unurlifyInt(uw_context ctx, char **s) {
adamc@311	1597 char new_s = uw_unurlify_advance(s);
adamc@311	1598 uw_Basis_int r;
adamc@120	1599
adamc@276	1600 r = atoll(*s);
adamc@120	1601 *s = new_s;
adamc@120	1602 return r;
adamc@120	1603 }
adamc@120	1604
adamc@311	1605 uw_Basis_float uw_Basis_unurlifyFloat(uw_context ctx, char **s) {
adamc@311	1606 char new_s = uw_unurlify_advance(s);
adamc@311	1607 uw_Basis_float r;
adamc@120	1608
adamc@120	1609 r = atof(*s);
adamc@120	1610 *s = new_s;
adamc@120	1611 return r;
adamc@120	1612 }
adamc@120	1613
adamc@488	1614 uw_Basis_time uw_Basis_unurlifyTime(uw_context ctx, char **s) {
adamc@488	1615 return uw_Basis_unurlifyInt(ctx, s);
adamc@488	1616 }
adamc@488	1617
adamc@311	1618 static uw_Basis_string uw_unurlifyString_to(uw_context ctx, char r, char s) {
adamc@144	1619 char s1, s2;
adamc@144	1620 int n;
adamc@136	1621
adamc@144	1622 for (s1 = r, s2 = s; *s2; ++s1, ++s2) {
adamc@136	1623 char c = *s2;
adamc@136	1624
adamc@136	1625 switch (c) {
adamc@136	1626 case '+':
adamc@136	1627 *s1 = ' ';
adamc@136	1628 break;
adamc@136	1629 case '%':
adamc@169	1630 if (s2[1] == 0)
adamc@311	1631 uw_error(ctx, FATAL, "Missing first character of escaped URL byte");
adamc@169	1632 if (s2[2] == 0)
adamc@311	1633 uw_error(ctx, FATAL, "Missing second character of escaped URL byte");
adamc@169	1634 if (sscanf(s2+1, "%02X", &n) != 1)
adamc@311	1635 uw_error(ctx, FATAL, "Invalid escaped URL byte starting at: %s", s2);
adamc@136	1636 *s1 = n;
adamc@136	1637 s2 += 2;
adamc@136	1638 break;
adamc@136	1639 default:
adamc@136	1640 *s1 = c;
adamc@136	1641 }
adamc@136	1642 }
adamc@136	1643 *s1++ = 0;
adamc@144	1644 return s1;
adamc@144	1645 }
adamc@144	1646
adamc@311	1647 uw_Basis_bool uw_Basis_unurlifyBool(uw_context ctx, char **s) {
adamc@311	1648 char new_s = uw_unurlify_advance(s);
adamc@311	1649 uw_Basis_bool r;
adamc@186	1650
adamc@186	1651 if (s[0] == 0 \|\| !strcmp(s, "0") \|\| !strcmp(*s, "off"))
adamc@311	1652 r = uw_Basis_False;
adamc@186	1653 else
adamc@311	1654 r = uw_Basis_True;
adamc@186	1655
adamc@186	1656 *s = new_s;
adamc@186	1657 return r;
adamc@186	1658 }
adamc@186	1659
adamc@311	1660 uw_Basis_string uw_Basis_unurlifyString(uw_context ctx, char **s) {
adamc@311	1661 char new_s = uw_unurlify_advance(s);
adamc@144	1662 char r, s1, *s2;
adamc@144	1663 int len, n;
adamc@144	1664
adamc@200	1665 len = strlen(*s);
adamc@311	1666 uw_check_heap(ctx, len + 1);
adamc@144	1667
adamc@666	1668 r = ctx->heap.front;
adamc@666	1669 ctx->heap.front = uw_unurlifyString_to(ctx, ctx->heap.front, *s);
adamc@136	1670 *s = new_s;
adamc@136	1671 return r;
adamc@120	1672 }
adamc@135	1673
adamc@135	1674
adamc@311	1675 char *uw_Basis_htmlifyInt(uw_context ctx, uw_Basis_int n) {
adamc@286	1676 int len;
adamc@286	1677 char *r;
adamc@286	1678
adamc@311	1679 uw_check_heap(ctx, INTS_MAX);
adamc@666	1680 r = ctx->heap.front;
adamc@286	1681 sprintf(r, "%lld%n", n, &len);
adamc@666	1682 ctx->heap.front += len+1;
adamc@286	1683 return r;
adamc@286	1684 }
adamc@286	1685
adamc@428	1686 uw_unit uw_Basis_htmlifyInt_w(uw_context ctx, uw_Basis_int n) {
adamc@286	1687 int len;
adamc@286	1688
adamc@311	1689 uw_check(ctx, INTS_MAX);
adamc@666	1690 sprintf(ctx->page.front, "%lld%n", n, &len);
adamc@666	1691 ctx->page.front += len;
adamc@428	1692
adamc@428	1693 return uw_unit_v;
adamc@286	1694 }
adamc@286	1695
adamc@311	1696 char *uw_Basis_htmlifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@286	1697 int len;
adamc@286	1698 char *r;
adamc@286	1699
adamc@311	1700 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	1701 r = ctx->heap.front;
adamc@286	1702 sprintf(r, "%g%n", n, &len);
adamc@666	1703 ctx->heap.front += len+1;
adamc@286	1704 return r;
adamc@286	1705 }
adamc@286	1706
adamc@428	1707 uw_unit uw_Basis_htmlifyFloat_w(uw_context ctx, uw_Basis_float n) {
adamc@286	1708 int len;
adamc@286	1709
adamc@311	1710 uw_check(ctx, FLOATS_MAX);
adamc@666	1711 sprintf(ctx->page.front, "%g%n", n, &len);
adamc@666	1712 ctx->page.front += len;
adamc@428	1713
adamc@428	1714 return uw_unit_v;
adamc@286	1715 }
adamc@286	1716
adamc@311	1717 char *uw_Basis_htmlifyString(uw_context ctx, uw_Basis_string s) {
adamc@137	1718 char r, s2;
adamc@137	1719
adamc@311	1720 uw_check_heap(ctx, strlen(s) * 5 + 1);
adamc@137	1721
adamc@666	1722 for (r = s2 = ctx->heap.front; *s; s++) {
adamc@137	1723 char c = *s;
adamc@137	1724
adamc@137	1725 switch (c) {
adamc@137	1726 case '<':
adamc@137	1727 strcpy(s2, "<");
adamc@137	1728 s2 += 4;
adamc@137	1729 break;
adamc@137	1730 case '&':
adamc@137	1731 strcpy(s2, "&");
adamc@137	1732 s2 += 5;
adamc@137	1733 break;
adamc@137	1734 default:
adamc@137	1735 if (isprint(c))
adamc@137	1736 *s2++ = c;
adamc@137	1737 else {
adamc@137	1738 int len2;
adamc@137	1739 sprintf(s2, "&#%d;%n", c, &len2);
adamc@137	1740 s2 += len2;
adamc@137	1741 }
adamc@137	1742 }
adamc@137	1743 }
adamc@137	1744
adamc@137	1745 *s2++ = 0;
adamc@666	1746 ctx->heap.front = s2;
adamc@137	1747 return r;
adamc@135	1748 }
adamc@135	1749
adamc@428	1750 uw_unit uw_Basis_htmlifyString_w(uw_context ctx, uw_Basis_string s) {
adamc@321	1751 uw_check(ctx, strlen(s) * 6);
adamc@135	1752
adamc@135	1753 for (; *s; s++) {
adamc@135	1754 char c = *s;
adamc@135	1755
adamc@135	1756 switch (c) {
adamc@135	1757 case '<':
adamc@311	1758 uw_write_unsafe(ctx, "<");
adamc@135	1759 break;
adamc@135	1760 case '&':
adamc@311	1761 uw_write_unsafe(ctx, "&");
adamc@135	1762 break;
adamc@135	1763 default:
adamc@135	1764 if (isprint(c))
adamc@311	1765 uw_writec_unsafe(ctx, c);
adamc@135	1766 else {
adamc@311	1767 uw_write_unsafe(ctx, "&#");
adamc@311	1768 uw_Basis_attrifyInt_w_unsafe(ctx, c);
adamc@311	1769 uw_writec_unsafe(ctx, ';');
adamc@135	1770 }
adamc@135	1771 }
adamc@135	1772 }
adamc@428	1773
adamc@428	1774 return uw_unit_v;
adamc@135	1775 }
adamc@180	1776
adamc@311	1777 uw_Basis_string uw_Basis_htmlifyBool(uw_context ctx, uw_Basis_bool b) {
adamc@311	1778 if (b == uw_Basis_False)
adamc@286	1779 return "False";
adamc@286	1780 else
adamc@286	1781 return "True";
adamc@286	1782 }
adamc@286	1783
adamc@428	1784 uw_unit uw_Basis_htmlifyBool_w(uw_context ctx, uw_Basis_bool b) {
adamc@311	1785 if (b == uw_Basis_False) {
adamc@311	1786 uw_check(ctx, 6);
adamc@666	1787 strcpy(ctx->page.front, "False");
adamc@666	1788 ctx->page.front += 5;
adamc@286	1789 } else {
adamc@311	1790 uw_check(ctx, 5);
adamc@666	1791 strcpy(ctx->page.front, "True");
adamc@666	1792 ctx->page.front += 4;
adamc@286	1793 }
adamc@428	1794
adamc@428	1795 return uw_unit_v;
adamc@286	1796 }
adamc@286	1797
adamc@436	1798 #define TIME_FMT "%x %X"
adamc@438	1799 #define TIME_FMT_PG "%Y-%m-%d %T"
adamc@436	1800
adamc@436	1801 uw_Basis_string uw_Basis_htmlifyTime(uw_context ctx, uw_Basis_time t) {
adamc@436	1802 size_t len;
adamc@436	1803 char *r;
adamc@436	1804 struct tm stm;
adamc@436	1805
adamc@436	1806 if (localtime_r(&t, &stm)) {
adamc@436	1807 uw_check_heap(ctx, TIMES_MAX);
adamc@666	1808 r = ctx->heap.front;
adamc@436	1809 len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
adamc@666	1810 ctx->heap.front += len+1;
adamc@436	1811 return r;
adamc@436	1812 } else
adamc@436	1813 return "<i>Invalid time</i>";
adamc@436	1814 }
adamc@436	1815
adamc@436	1816 uw_unit uw_Basis_htmlifyTime_w(uw_context ctx, uw_Basis_time t) {
adamc@436	1817 size_t len;
adamc@436	1818 char *r;
adamc@436	1819 struct tm stm;
adamc@436	1820
adamc@436	1821 if (localtime_r(&t, &stm)) {
adamc@436	1822 uw_check(ctx, TIMES_MAX);
adamc@666	1823 r = ctx->page.front;
adamc@436	1824 len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
adamc@666	1825 ctx->page.front += len;
adamc@436	1826 } else {
adamc@436	1827 uw_check(ctx, 20);
adamc@666	1828 strcpy(ctx->page.front, "<i>Invalid time</i>");
adamc@666	1829 ctx->page.front += 19;
adamc@436	1830 }
adamc@436	1831
adamc@436	1832 return uw_unit_v;
adamc@436	1833 }
adamc@436	1834
adamc@821	1835 uw_Basis_char uw_Basis_strsub(uw_context ctx, uw_Basis_string s, uw_Basis_int n) {
adamc@821	1836 if (n >= 0 && n < strlen(s))
adamc@821	1837 return s[n];
adamc@821	1838 else
adamc@821	1839 uw_error(ctx, FATAL, "Out-of-bounds strsub");
adamc@821	1840 }
adamc@821	1841
adamc@821	1842 uw_Basis_string uw_Basis_strsuffix(uw_context ctx, uw_Basis_string s, uw_Basis_int n) {
adamc@821	1843 if (n >= 0 && n < strlen(s))
adamc@821	1844 return &s[n];
adamc@821	1845 else
adamc@821	1846 uw_error(ctx, FATAL, "Out-of-bounds strsuffix");
adamc@821	1847 }
adamc@821	1848
adamc@828	1849 uw_Basis_int uw_Basis_strlen(uw_context ctx, uw_Basis_string s) {
adamc@828	1850 return strlen(s);
adamc@828	1851 }
adamc@828	1852
adamc@829	1853 uw_Basis_string uw_Basis_strchr(uw_context ctx, uw_Basis_string s, uw_Basis_char ch) {
adamc@829	1854 return strchr(s, ch);
adamc@829	1855 }
adamc@829	1856
adamc@831	1857 uw_Basis_int uw_Basis_strcspn(uw_context ctx, uw_Basis_string s, uw_Basis_string chs) {
adamc@831	1858 return strcspn(s, chs);
adamc@831	1859 }
adamc@831	1860
adamc@829	1861 uw_Basis_int *uw_Basis_strindex(uw_context ctx, uw_Basis_string s, uw_Basis_char ch) {
adamc@829	1862 uw_Basis_string r = strchr(s, ch);
adamc@829	1863 if (r == NULL)
adamc@829	1864 return NULL;
adamc@829	1865 else {
adamc@829	1866 uw_Basis_int *nr = uw_malloc(ctx, sizeof(uw_Basis_int));
adamc@829	1867 *nr = r - s;
adamc@829	1868 return nr;
adamc@829	1869 }
adamc@829	1870 }
adamc@829	1871
adamc@311	1872 uw_Basis_string uw_Basis_strcat(uw_context ctx, uw_Basis_string s1, uw_Basis_string s2) {
adamc@828	1873 int len = uw_Basis_strlen(ctx, s1) + uw_Basis_strlen(ctx, s2) + 1;
adamc@180	1874 char *s;
adamc@180	1875
adamc@311	1876 uw_check_heap(ctx, len);
adamc@180	1877
adamc@666	1878 s = ctx->heap.front;
adamc@180	1879
adamc@180	1880 strcpy(s, s1);
adamc@180	1881 strcat(s, s2);
adamc@666	1882 ctx->heap.front += len;
adamc@180	1883
adamc@180	1884 return s;
adamc@180	1885 }
adamc@278	1886
adamc@829	1887 uw_Basis_string uw_Basis_substring(uw_context ctx, uw_Basis_string s, uw_Basis_int start, uw_Basis_int len) {
adamc@829	1888 size_t full_len = uw_Basis_strlen(ctx, s);
adamc@829	1889
adamc@829	1890 if (start < 0)
adamc@829	1891 uw_error(ctx, FATAL, "substring: Negative start index");
adamc@829	1892 if (len < 0)
adamc@829	1893 uw_error(ctx, FATAL, "substring: Negative length");
adamc@829	1894 if (start + len > full_len)
adamc@829	1895 uw_error(ctx, FATAL, "substring: Start index plus length is too large");
adamc@829	1896
adamc@829	1897 if (start + len == full_len)
adamc@829	1898 return &s[start];
adamc@829	1899 else {
adamc@829	1900 uw_Basis_string r = uw_malloc(ctx, len+1);
adamc@829	1901 memcpy(r, s, len);
adamc@829	1902 r[len] = 0;
adamc@829	1903 return r;
adamc@829	1904 }
adamc@829	1905
adamc@829	1906 }
adamc@829	1907
adamc@737	1908 uw_Basis_string uw_strdup(uw_context ctx, uw_Basis_string s1) {
adamc@828	1909 int len = uw_Basis_strlen(ctx, s1) + 1;
adamc@278	1910 char *s;
adamc@278	1911
adamc@311	1912 uw_check_heap(ctx, len);
adamc@278	1913
adamc@666	1914 s = ctx->heap.front;
adamc@278	1915
adamc@278	1916 strcpy(s, s1);
adamc@666	1917 ctx->heap.front += len;
adamc@278	1918
adamc@278	1919 return s;
adamc@278	1920 }
adamc@280	1921
adamc@737	1922 uw_Basis_string uw_maybe_strdup(uw_context ctx, uw_Basis_string s1) {
adamc@493	1923 if (s1)
adamc@737	1924 return uw_strdup(ctx, s1);
adamc@493	1925 else
adamc@493	1926 return NULL;
adamc@493	1927 }
adamc@493	1928
adamc@742	1929 char uw_memdup(uw_context ctx, const char p, size_t len) {
adamc@742	1930 char *r = uw_malloc(ctx, len);
adamc@742	1931 memcpy(r, p, len);
adamc@742	1932 return r;
adamc@742	1933 }
adamc@280	1934
adamc@879	1935 char *uw_sqlfmtInt = "%lld::int8%n";
adamc@879	1936
adamc@311	1937 char *uw_Basis_sqlifyInt(uw_context ctx, uw_Basis_int n) {
adamc@281	1938 int len;
adamc@281	1939 char *r;
adamc@281	1940
adamc@311	1941 uw_check_heap(ctx, INTS_MAX + 6);
adamc@666	1942 r = ctx->heap.front;
adamc@879	1943 sprintf(r, uw_sqlfmtInt, n, &len);
adamc@666	1944 ctx->heap.front += len+1;
adamc@281	1945 return r;
adamc@281	1946 }
adamc@281	1947
adamc@467	1948 char uw_Basis_sqlifyIntN(uw_context ctx, uw_Basis_int n) {
adamc@467	1949 if (n == NULL)
adamc@467	1950 return "NULL";
adamc@467	1951 else
adamc@467	1952 return uw_Basis_sqlifyInt(ctx, *n);
adamc@467	1953 }
adamc@467	1954
adamc@879	1955 char *uw_sqlfmtFloat = "%g::float8%n";
adamc@879	1956
adamc@311	1957 char *uw_Basis_sqlifyFloat(uw_context ctx, uw_Basis_float n) {
adamc@281	1958 int len;
adamc@281	1959 char *r;
adamc@281	1960
adamc@311	1961 uw_check_heap(ctx, FLOATS_MAX + 8);
adamc@666	1962 r = ctx->heap.front;
adamc@879	1963 sprintf(r, uw_sqlfmtFloat, n, &len);
adamc@666	1964 ctx->heap.front += len+1;
adamc@281	1965 return r;
adamc@281	1966 }
adamc@281	1967
adamc@467	1968 char uw_Basis_sqlifyFloatN(uw_context ctx, uw_Basis_float n) {
adamc@467	1969 if (n == NULL)
adamc@467	1970 return "NULL";
adamc@467	1971 else
adamc@467	1972 return uw_Basis_sqlifyFloat(ctx, *n);
adamc@467	1973 }
adamc@467	1974
adamc@879	1975 int uw_Estrings = 1;
adamc@879	1976 char *uw_sqlsuffixString = "::text";
adamc@281	1977
adamc@311	1978 uw_Basis_string uw_Basis_sqlifyString(uw_context ctx, uw_Basis_string s) {
adamc@280	1979 char r, s2;
adamc@280	1980
adamc@879	1981 uw_check_heap(ctx, strlen(s) * 2 + 3 + uw_Estrings + strlen(uw_sqlsuffixString));
adamc@280	1982
adamc@666	1983 r = s2 = ctx->heap.front;
adamc@879	1984 if (uw_Estrings)
adamc@879	1985 *s2++ = 'E';
adamc@280	1986 *s2++ = '\'';
adamc@280	1987
adamc@280	1988 for (; *s; s++) {
adamc@280	1989 char c = *s;
adamc@280	1990
adamc@280	1991 switch (c) {
adamc@280	1992 case '\'':
adamc@885	1993 if (uw_Estrings)
adamc@885	1994 strcpy(s2, "\\'");
adamc@885	1995 else
adamc@885	1996 strcpy(s2, "''");
adamc@280	1997 s2 += 2;
adamc@280	1998 break;
adamc@280	1999 case '\\':
adamc@885	2000 if (uw_Estrings) {
adamc@885	2001 strcpy(s2, "\\\\");
adamc@885	2002 s2 += 2;
adamc@885	2003 } else
adamc@885	2004 *s2++ = '\\';
adamc@280	2005 break;
adamc@280	2006 default:
adamc@280	2007 if (isprint(c))
adamc@280	2008 *s2++ = c;
adamc@879	2009 else if (uw_Estrings) {
adamc@737	2010 sprintf(s2, "\\%03o", c);
adamc@280	2011 s2 += 4;
adamc@280	2012 }
adamc@879	2013 else
adamc@879	2014 uw_error(ctx, FATAL, "Non-printable character %u in string to SQLify", c);
adamc@280	2015 }
adamc@280	2016 }
adamc@280	2017
adamc@879	2018 *s2++ = '\'';
adamc@879	2019 strcpy(s2, uw_sqlsuffixString);
adamc@879	2020 ctx->heap.front = s2 + 1 + strlen(uw_sqlsuffixString);
adamc@280	2021 return r;
adamc@280	2022 }
adamc@281	2023
adamc@879	2024 char *uw_sqlsuffixBlob = "::bytea";
adamc@879	2025
adamc@737	2026 uw_Basis_string uw_Basis_sqlifyBlob(uw_context ctx, uw_Basis_blob b) {
adamc@737	2027 char r, s2;
adamc@737	2028 size_t i;
adamc@737	2029
adamc@879	2030 uw_check_heap(ctx, b.size * 5 + 3 + uw_Estrings + strlen(uw_sqlsuffixBlob));
adamc@737	2031
adamc@737	2032 r = s2 = ctx->heap.front;
adamc@879	2033 if (uw_Estrings)
adamc@879	2034 *s2++ = 'E';
adamc@737	2035 *s2++ = '\'';
adamc@737	2036
adamc@737	2037 for (i = 0; i < b.size; ++i) {
adamc@737	2038 char c = b.data[i];
adamc@737	2039
adamc@737	2040 switch (c) {
adamc@737	2041 case '\'':
adamc@885	2042 if (uw_Estrings)
adamc@885	2043 strcpy(s2, "\\'");
adamc@885	2044 else
adamc@885	2045 strcpy(s2, "''");
adamc@737	2046 s2 += 2;
adamc@737	2047 break;
adamc@737	2048 case '\\':
adamc@885	2049 if (uw_Estrings) {
adamc@885	2050 strcpy(s2, "\\\\\\\\");
adamc@885	2051 s2 += 4;
adamc@885	2052 } else
adamc@885	2053 *s2++ = '\\';
adamc@737	2054 break;
adamc@737	2055 default:
adamc@737	2056 if (isprint(c))
adamc@737	2057 *s2++ = c;
adamc@879	2058 else if (uw_Estrings) {
adamc@737	2059 sprintf(s2, "\\\\%03o", c);
adamc@737	2060 s2 += 5;
adamc@737	2061 }
adamc@879	2062 else
adamc@879	2063 uw_error(ctx, FATAL, "Non-printable character %u in blob to SQLify", c);
adamc@737	2064 }
adamc@737	2065 }
adamc@737	2066
adamc@879	2067 *s2++ = '\'';
adamc@879	2068 strcpy(s2, uw_sqlsuffixBlob);
adamc@879	2069 ctx->heap.front = s2 + 1 + strlen(uw_sqlsuffixBlob);
adamc@737	2070 return r;
adamc@737	2071 }
adamc@737	2072
adamc@682	2073 char *uw_Basis_sqlifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	2074 int len;
adamc@682	2075 char *r;
adamc@682	2076 unsigned long long combo = ((unsigned long long)chn.cli << 32) \| chn.chn;
adamc@682	2077
adamc@682	2078 uw_check_heap(ctx, INTS_MAX + 7);
adamc@682	2079 r = ctx->heap.front;
adamc@879	2080 sprintf(r, uw_sqlfmtInt, combo, &len);
adamc@682	2081 ctx->heap.front += len+1;
adamc@682	2082 return r;
adamc@682	2083 }
adamc@682	2084
adamc@682	2085 char *uw_Basis_attrifyChannel(uw_context ctx, uw_Basis_channel chn) {
adamc@682	2086 int len;
adamc@682	2087 char *r;
adamc@682	2088 unsigned long long combo = ((unsigned long long)chn.cli << 32) \| chn.chn;
adamc@682	2089
adamc@682	2090 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	2091 r = ctx->heap.front;
adamc@682	2092 sprintf(r, "%lld%n", combo, &len);
adamc@682	2093 ctx->heap.front += len+1;
adamc@682	2094 return r;
adamc@682	2095 }
adamc@682	2096
adamc@879	2097 char *uw_sqlfmtUint4 = "%u::int4%n";
adamc@879	2098
adamc@682	2099 char *uw_Basis_sqlifyClient(uw_context ctx, uw_Basis_client cli) {
adamc@682	2100 int len;
adamc@682	2101 char *r;
adamc@682	2102
adamc@682	2103 uw_check_heap(ctx, INTS_MAX + 7);
adamc@682	2104 r = ctx->heap.front;
adamc@879	2105 sprintf(r, uw_sqlfmtUint4, cli, &len);
adamc@682	2106 ctx->heap.front += len+1;
adamc@682	2107 return r;
adamc@682	2108 }
adamc@682	2109
adamc@682	2110 char *uw_Basis_attrifyClient(uw_context ctx, uw_Basis_client cli) {
adamc@682	2111 int len;
adamc@682	2112 char *r;
adamc@682	2113
adamc@682	2114 uw_check_heap(ctx, INTS_MAX + 1);
adamc@682	2115 r = ctx->heap.front;
adamc@682	2116 sprintf(r, "%u%n", cli, &len);
adamc@682	2117 ctx->heap.front += len+1;
adamc@682	2118 return r;
adamc@682	2119 }
adamc@682	2120
adamc@467	2121 uw_Basis_string uw_Basis_sqlifyStringN(uw_context ctx, uw_Basis_string s) {
adamc@467	2122 if (s == NULL)
adamc@467	2123 return "NULL";
adamc@467	2124 else
adamc@467	2125 return uw_Basis_sqlifyString(ctx, s);
adamc@467	2126 }
adamc@467	2127
adamc@311	2128 char *uw_Basis_sqlifyBool(uw_context ctx, uw_Basis_bool b) {
adamc@311	2129 if (b == uw_Basis_False)
adamc@281	2130 return "FALSE";
adamc@281	2131 else
adamc@281	2132 return "TRUE";
adamc@281	2133 }
adamc@282	2134
adamc@467	2135 char uw_Basis_sqlifyBoolN(uw_context ctx, uw_Basis_bool b) {
adamc@467	2136 if (b == NULL)
adamc@467	2137 return "NULL";
adamc@467	2138 else
adamc@467	2139 return uw_Basis_sqlifyBool(ctx, *b);
adamc@467	2140 }
adamc@467	2141
adamc@439	2142 char *uw_Basis_sqlifyTime(uw_context ctx, uw_Basis_time t) {
adamc@439	2143 size_t len;
adamc@682	2144 char r, s;
adamc@682	2145 struct tm stm;
adamc@682	2146
adamc@682	2147 if (localtime_r(&t, &stm)) {
adamc@682	2148 s = uw_malloc(ctx, TIMES_MAX);
adamc@682	2149 len = strftime(s, TIMES_MAX, TIME_FMT, &stm);
adamc@682	2150 r = uw_malloc(ctx, len + 14);
adamc@682	2151 sprintf(r, "'%s'::timestamp", s);
adamc@682	2152 return r;
adamc@682	2153 } else
adamc@682	2154 return "<Invalid time>";
adamc@682	2155 }
adamc@682	2156
adamc@682	2157 char *uw_Basis_attrifyTime(uw_context ctx, uw_Basis_time t) {
adamc@682	2158 size_t len;
adamc@439	2159 char *r;
adamc@439	2160 struct tm stm;
adamc@439	2161
adamc@439	2162 if (localtime_r(&t, &stm)) {
adamc@439	2163 uw_check_heap(ctx, TIMES_MAX);
adamc@666	2164 r = ctx->heap.front;
adamc@439	2165 len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
adamc@666	2166 ctx->heap.front += len+1;
adamc@439	2167 return r;
adamc@439	2168 } else
adamc@439	2169 return "<Invalid time>";
adamc@439	2170 }
adamc@439	2171
adamc@467	2172 char uw_Basis_sqlifyTimeN(uw_context ctx, uw_Basis_time t) {
adamc@467	2173 if (t == NULL)
adamc@467	2174 return "NULL";
adamc@467	2175 else
adamc@467	2176 return uw_Basis_sqlifyTime(ctx, *t);
adamc@467	2177 }
adamc@467	2178
adamc@311	2179 char *uw_Basis_ensqlBool(uw_Basis_bool b) {
adamc@311	2180 static uw_Basis_int true = 1;
adamc@311	2181 static uw_Basis_int false = 0;
adamc@282	2182
adamc@311	2183 if (b == uw_Basis_False)
adamc@282	2184 return (char *)&false;
adamc@282	2185 else
adamc@282	2186 return (char *)&true;
adamc@282	2187 }
adamc@284	2188
adamc@311	2189 uw_Basis_string uw_Basis_intToString(uw_context ctx, uw_Basis_int n) {
adamc@284	2190 int len;
adamc@284	2191 char *r;
adamc@284	2192
adamc@311	2193 uw_check_heap(ctx, INTS_MAX);
adamc@666	2194 r = ctx->heap.front;
adamc@284	2195 sprintf(r, "%lld%n", n, &len);
adamc@666	2196 ctx->heap.front += len+1;
adamc@284	2197 return r;
adamc@284	2198 }
adamc@285	2199
adamc@311	2200 uw_Basis_string uw_Basis_floatToString(uw_context ctx, uw_Basis_float n) {
adamc@285	2201 int len;
adamc@285	2202 char *r;
adamc@285	2203
adamc@311	2204 uw_check_heap(ctx, FLOATS_MAX);
adamc@666	2205 r = ctx->heap.front;
adamc@285	2206 sprintf(r, "%g%n", n, &len);
adamc@666	2207 ctx->heap.front += len+1;
adamc@285	2208 return r;
adamc@285	2209 }
adamc@285	2210
adamc@821	2211 uw_Basis_string uw_Basis_charToString(uw_context ctx, uw_Basis_char ch) {
adamc@821	2212 char *r = uw_malloc(ctx, 2);
adamc@821	2213 r[0] = ch;
adamc@821	2214 r[1] = 0;
adamc@821	2215 return r;
adamc@821	2216 }
adamc@821	2217
adamc@311	2218 uw_Basis_string uw_Basis_boolToString(uw_context ctx, uw_Basis_bool b) {
adamc@311	2219 if (b == uw_Basis_False)
adamc@285	2220 return "False";
adamc@285	2221 else
adamc@285	2222 return "True";
adamc@285	2223 }
adamc@288	2224
adamc@436	2225 uw_Basis_string uw_Basis_timeToString(uw_context ctx, uw_Basis_time t) {
adamc@436	2226 size_t len;
adamc@436	2227 char *r;
adamc@436	2228 struct tm stm;
adamc@436	2229
adamc@436	2230 if (localtime_r(&t, &stm)) {
adamc@436	2231 uw_check_heap(ctx, TIMES_MAX);
adamc@666	2232 r = ctx->heap.front;
adamc@436	2233 len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
adamc@666	2234 ctx->heap.front += len+1;
adamc@436	2235 return r;
adamc@436	2236 } else
adamc@436	2237 return "<Invalid time>";
adamc@436	2238 }
adamc@288	2239
adamc@311	2240 uw_Basis_int *uw_Basis_stringToInt(uw_context ctx, uw_Basis_string s) {
adamc@288	2241 char *endptr;
adamc@311	2242 uw_Basis_int n = strtoll(s, &endptr, 10);
adamc@288	2243
adamc@288	2244 if (s != '\0' && endptr == '\0') {
adamc@311	2245 uw_Basis_int *r = uw_malloc(ctx, sizeof(uw_Basis_int));
adamc@288	2246 *r = n;
adamc@288	2247 return r;
adamc@288	2248 } else
adamc@288	2249 return NULL;
adamc@288	2250 }
adamc@289	2251
adamc@311	2252 uw_Basis_float *uw_Basis_stringToFloat(uw_context ctx, uw_Basis_string s) {
adamc@289	2253 char *endptr;
adamc@311	2254 uw_Basis_float n = strtod(s, &endptr);
adamc@289	2255
adamc@289	2256 if (s != '\0' && endptr == '\0') {
adamc@311	2257 uw_Basis_float *r = uw_malloc(ctx, sizeof(uw_Basis_float));
adamc@289	2258 *r = n;
adamc@289	2259 return r;
adamc@289	2260 } else
adamc@289	2261 return NULL;
adamc@289	2262 }
adamc@289	2263
adamc@821	2264 uw_Basis_char *uw_Basis_stringToChar(uw_context ctx, uw_Basis_string s) {
adamc@821	2265 if (s[0] == 0) {
adamc@821	2266 uw_Basis_char *r = uw_malloc(ctx, 1);
adamc@821	2267 r[0] = 0;
adamc@821	2268 return r;
adamc@821	2269 } else if (s[1] != 0)
adamc@821	2270 return NULL;
adamc@821	2271 else {
adamc@821	2272 uw_Basis_char *r = uw_malloc(ctx, 1);
adamc@821	2273 r[0] = s[0];
adamc@821	2274 return r;
adamc@821	2275 }
adamc@821	2276 }
adamc@821	2277
adamc@311	2278 uw_Basis_bool *uw_Basis_stringToBool(uw_context ctx, uw_Basis_string s) {
adamc@311	2279 static uw_Basis_bool true = uw_Basis_True;
adamc@311	2280 static uw_Basis_bool false = uw_Basis_False;
adamc@289	2281
adamc@289	2282 if (!strcasecmp (s, "True"))
adamc@289	2283 return &true;
adamc@289	2284 else if (!strcasecmp (s, "False"))
adamc@289	2285 return &false;
adamc@289	2286 else
adamc@289	2287 return NULL;
adamc@289	2288 }
adamc@292	2289
adamc@436	2290 uw_Basis_time *uw_Basis_stringToTime(uw_context ctx, uw_Basis_string s) {
adamc@438	2291 char dot = strchr(s, '.'), end = strchr(s, 0);
adamc@436	2292 struct tm stm;
adamc@436	2293
adamc@439	2294 if (dot) {
adamc@439	2295 *dot = 0;
adamc@439	2296 if (strptime(s, TIME_FMT_PG, &stm) == end) {
adamc@439	2297 *dot = '.';
adamc@439	2298 uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
adamc@439	2299 *r = mktime(&stm);
adamc@439	2300 return r;
adamc@439	2301 }
adamc@439	2302 else {
adamc@439	2303 *dot = '.';
adamc@439	2304 return NULL;
adamc@439	2305 }
adamc@436	2306 }
adamc@439	2307 else {
adamc@439	2308 if (strptime(s, TIME_FMT_PG, &stm) == end) {
adamc@439	2309 uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
adamc@439	2310 *r = mktime(&stm);
adamc@439	2311 return r;
adamc@439	2312 }
adamc@439	2313 else if (strptime(s, TIME_FMT, &stm) == end) {
adamc@439	2314 uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
adamc@439	2315 *r = mktime(&stm);
adamc@439	2316 return r;
adamc@439	2317 }
adamc@439	2318 else
adamc@439	2319 return NULL;
adamc@439	2320 }
adamc@436	2321 }
adamc@436	2322
adamc@311	2323 uw_Basis_int uw_Basis_stringToInt_error(uw_context ctx, uw_Basis_string s) {
adamc@292	2324 char *endptr;
adamc@311	2325 uw_Basis_int n = strtoll(s, &endptr, 10);
adamc@292	2326
adamc@292	2327 if (s != '\0' && endptr == '\0')
adamc@292	2328 return n;
adamc@292	2329 else
adamc@311	2330 uw_error(ctx, FATAL, "Can't parse int: %s", s);
adamc@292	2331 }
adamc@293	2332
adamc@682	2333 #include <errno.h>
adamc@682	2334
adamc@678	2335 uw_Basis_channel uw_Basis_stringToChannel_error(uw_context ctx, uw_Basis_string s) {
adamc@682	2336 unsigned long long n;
adamc@682	2337
adamc@682	2338 if (sscanf(s, "%llu", &n) < 1)
adamc@682	2339 uw_error(ctx, FATAL, "Can't parse channel: %s", s);
adamc@682	2340 else {
adamc@682	2341 uw_Basis_channel ch = {n >> 32, n & ((1ull << 32) - 1)};
adamc@682	2342 return ch;
adamc@682	2343 }
adamc@682	2344 }
adamc@682	2345
adamc@682	2346 uw_Basis_client uw_Basis_stringToClient_error(uw_context ctx, uw_Basis_string s) {
adamc@678	2347 char *endptr;
adamc@682	2348 unsigned long n = strtoul(s, &endptr, 10);
adamc@678	2349
adamc@678	2350 if (s != '\0' && endptr == '\0')
adamc@678	2351 return n;
adamc@678	2352 else
adamc@682	2353 uw_error(ctx, FATAL, "Can't parse client: %s", s);
adamc@678	2354 }
adamc@678	2355
adamc@311	2356 uw_Basis_float uw_Basis_stringToFloat_error(uw_context ctx, uw_Basis_string s) {
adamc@293	2357 char *endptr;
adamc@311	2358 uw_Basis_float n = strtod(s, &endptr);
adamc@293	2359
adamc@293	2360 if (s != '\0' && endptr == '\0')
adamc@293	2361 return n;
adamc@293	2362 else
adamc@311	2363 uw_error(ctx, FATAL, "Can't parse float: %s", s);
adamc@293	2364 }
adamc@293	2365
adamc@821	2366 uw_Basis_char uw_Basis_stringToChar_error(uw_context ctx, uw_Basis_string s) {
adamc@821	2367 if (s[0] == 0)
adamc@821	2368 return 0;
adamc@821	2369 else if (s[1] != 0)
adamc@821	2370 uw_error(ctx, FATAL, "Can't parse char: %s", s);
adamc@821	2371 else
adamc@821	2372 return s[0];
adamc@821	2373 }
adamc@821	2374
adamc@311	2375 uw_Basis_bool uw_Basis_stringToBool_error(uw_context ctx, uw_Basis_string s) {
adamc@296	2376 if (!strcasecmp(s, "T") \|\| !strcasecmp (s, "True"))
adamc@311	2377 return uw_Basis_True;
adamc@296	2378 else if (!strcasecmp(s, "F") \|\| !strcasecmp (s, "False"))
adamc@311	2379 return uw_Basis_False;
adamc@293	2380 else
adamc@311	2381 uw_error(ctx, FATAL, "Can't parse bool: %s", s);
adamc@293	2382 }
adamc@436	2383
adamc@436	2384 uw_Basis_time uw_Basis_stringToTime_error(uw_context ctx, uw_Basis_string s) {
adamc@438	2385 char dot = strchr(s, '.'), end = strchr(s, 0);
adamc@436	2386 struct tm stm = {};
adamc@436	2387
adamc@438	2388 if (dot) {
adamc@438	2389 *dot = 0;
adamc@438	2390 if (strptime(s, TIME_FMT_PG, &stm)) {
adamc@438	2391 *dot = '.';
adamc@438	2392 return mktime(&stm);
adamc@438	2393 }
adamc@438	2394 else {
adamc@438	2395 *dot = '.';
adamc@438	2396 uw_error(ctx, FATAL, "Can't parse time: %s", s);
adamc@438	2397 }
adamc@438	2398 }
adamc@438	2399 else {
adamc@439	2400 if (strptime(s, TIME_FMT_PG, &stm) == end)
adamc@439	2401 return mktime(&stm);
adamc@439	2402 else if (strptime(s, TIME_FMT, &stm) == end)
adamc@438	2403 return mktime(&stm);
adamc@438	2404 else
adamc@438	2405 uw_error(ctx, FATAL, "Can't parse time: %s", s);
adamc@438	2406 }
adamc@436	2407 }
adamc@457	2408
adamc@742	2409 uw_Basis_blob uw_Basis_stringToBlob_error(uw_context ctx, uw_Basis_string s, size_t len) {
adamc@742	2410 char *r = ctx->heap.front;
adamc@742	2411 uw_Basis_blob b = {len, r};
adamc@742	2412
adamc@742	2413 uw_check_heap(ctx, len);
adamc@742	2414
adamc@742	2415 while (*s) {
adamc@742	2416 if (s[0] == '\\') {
adamc@742	2417 if (s[1] == '\\') {
adamc@742	2418 *r++ = '\\';
adamc@742	2419 s += 2;
adamc@742	2420 } else if (isdigit(s[1]) && isdigit(s[2]) && isdigit(s[3])) {
adamc@742	2421 r++ = (s[1] - '0') 8 * 8 + ((s[2] - '0') * 8) + (s[3] - '0');
adamc@742	2422 s += 4;
adamc@742	2423 }
adamc@742	2424 else {
adamc@742	2425 *r++ = '\\';
adamc@742	2426 ++s;
adamc@742	2427 }
adamc@742	2428 } else {
adamc@742	2429 *r++ = s[0];
adamc@742	2430 ++s;
adamc@742	2431 }
adamc@742	2432 }
adamc@742	2433
adamc@742	2434 b.size = r - ctx->heap.front;
adamc@742	2435 ctx->heap.front = r;
adamc@742	2436 return b;
adamc@742	2437 }
adamc@742	2438
adamc@463	2439 uw_Basis_string uw_Basis_get_cookie(uw_context ctx, uw_Basis_string c) {
adamc@463	2440 int len = strlen(c);
adamc@854	2441 char *p = ctx->outHeaders.start;
adamc@474	2442
adamc@474	2443 while (p = strstr(p, "\nSet-Cookie: ")) {
adamc@474	2444 char *p2;
adamc@474	2445 p += 13;
adamc@474	2446 p2 = strchr(p, '=');
adamc@474	2447
adamc@474	2448 if (p2) {
adamc@474	2449 size_t sz = strcspn(p2+1, ";\r\n");
adamc@474	2450
adamc@474	2451 if (!strncasecmp(p, c, p2 - p)) {
adamc@474	2452 char *ret = uw_malloc(ctx, sz + 1);
adamc@474	2453 memcpy(ret, p2+1, sz);
adamc@474	2454 ret[sz] = 0;
adamc@474	2455 return ret;
adamc@474	2456 }
adamc@474	2457 }
adamc@474	2458 }
adamc@463	2459
adamc@854	2460 if (p = uw_Basis_requestHeader(ctx, "Cookie")) {
adamc@854	2461 while (1) {
adamc@854	2462 if (!strncmp(p, c, len) && p[len] == '=')
adamc@854	2463 return p + 1 + len;
adamc@854	2464 else if (p = strchr(p, ';'))
adamc@854	2465 p += 2;
adamc@463	2466 else
adamc@463	2467 return NULL;
adamc@463	2468 }
adamc@463	2469 }
adamc@792	2470
adamc@792	2471 return NULL;
adamc@457	2472 }
adamc@462	2473
adamc@466	2474 uw_unit uw_Basis_set_cookie(uw_context ctx, uw_Basis_string prefix, uw_Basis_string c, uw_Basis_string v) {
adamc@462	2475 uw_write_header(ctx, "Set-Cookie: ");
adamc@462	2476 uw_write_header(ctx, c);
adamc@462	2477 uw_write_header(ctx, "=");
adamc@462	2478 uw_write_header(ctx, v);
adamc@466	2479 uw_write_header(ctx, "; path=");
adamc@466	2480 uw_write_header(ctx, prefix);
adamc@462	2481 uw_write_header(ctx, "\r\n");
adamc@462	2482
adamc@462	2483 return uw_unit_v;
adamc@462	2484 }
adamc@667	2485
adamc@682	2486 static delta *allocate_delta(uw_context ctx, unsigned client) {
adamc@682	2487 unsigned i;
adamc@682	2488 delta *d;
adamc@671	2489
adamc@682	2490 for (i = 0; i < ctx->used_deltas; ++i)
adamc@682	2491 if (ctx->deltas[i].client == client)
adamc@682	2492 return &ctx->deltas[i];
adamc@671	2493
adamc@682	2494 if (ctx->used_deltas >= ctx->n_deltas) {
adamc@682	2495 ctx->deltas = realloc(ctx->deltas, sizeof(delta) * ++ctx->n_deltas);
adamc@682	2496 buf_init(&ctx->deltas[ctx->n_deltas-1].msgs, 0);
adamc@682	2497 }
adamc@671	2498
adamc@682	2499 d = &ctx->deltas[ctx->used_deltas++];
adamc@682	2500 d->client = client;
adamc@682	2501 buf_reset(&d->msgs);
adamc@682	2502 return d;
adamc@671	2503 }
adamc@671	2504
adamc@668	2505 uw_Basis_channel uw_Basis_new_channel(uw_context ctx, uw_unit u) {
adamc@682	2506 if (ctx->client == NULL)
adamc@682	2507 uw_error(ctx, FATAL, "Attempt to create channel on request not associated with a persistent connection");
adamc@671	2508
adamc@682	2509 return new_channel(ctx->client);
adamc@668	2510 }
adamc@668	2511
adamc@668	2512 uw_unit uw_Basis_send(uw_context ctx, uw_Basis_channel chn, uw_Basis_string msg) {
adamc@682	2513 delta *d = allocate_delta(ctx, chn.cli);
adamc@682	2514 size_t len;
adamc@682	2515 int preLen;
adamc@682	2516 char pre[INTS_MAX + 2];
adamc@668	2517
adamc@682	2518 len = strlen(msg);
adamc@682	2519
adamc@682	2520 sprintf(pre, "%u\n%n", chn.chn, &preLen);
adamc@682	2521
adamc@682	2522 buf_append(&d->msgs, pre, preLen);
adamc@682	2523 buf_append(&d->msgs, msg, len);
adamc@682	2524 buf_append(&d->msgs, "\n", 1);
adamc@671	2525
adamc@671	2526 return uw_unit_v;
adamc@668	2527 }
adamc@671	2528
adamc@671	2529 int uw_db_commit(uw_context);
adamc@671	2530 int uw_db_rollback(uw_context);
adamc@671	2531
adamc@671	2532 void uw_commit(uw_context ctx) {
adamc@682	2533 unsigned i;
adamc@671	2534
adamc@771	2535 for (i = 0; i < ctx->used_transactionals; ++i)
adamc@771	2536 if (ctx->transactionals[i].rollback != NULL)
adamc@771	2537 ctx->transactionals[i].commit(ctx->transactionals[i].data);
adamc@771	2538
adamc@771	2539 for (i = 0; i < ctx->used_transactionals; ++i)
adamc@771	2540 if (ctx->transactionals[i].rollback == NULL)
adamc@771	2541 ctx->transactionals[i].commit(ctx->transactionals[i].data);
adamc@771	2542
adamc@771	2543 if (uw_db_commit(ctx))
adamc@671	2544 uw_error(ctx, FATAL, "Error running SQL COMMIT");
adamc@682	2545
adamc@682	2546 for (i = 0; i < ctx->used_deltas; ++i) {
adamc@682	2547 delta *d = &ctx->deltas[i];
adamc@682	2548 client *c = find_client(d->client);
adamc@682	2549
adamc@682	2550 assert (c != NULL && c->mode == USED);
adamc@682	2551
adamc@685	2552 client_send(c, &d->msgs);
adamc@682	2553 }
adamc@682	2554
adamc@682	2555 if (ctx->client)
adamc@685	2556 release_client(ctx->client);
adamc@771	2557
adamc@771	2558 for (i = 0; i < ctx->used_transactionals; ++i)
adamc@771	2559 ctx->transactionals[i].free(ctx->transactionals[i].data);
adamc@671	2560 }
adamc@671	2561
adamc@671	2562 int uw_rollback(uw_context ctx) {
adamc@771	2563 size_t i;
adamc@885	2564 cleanup *cl;
adamc@771	2565
adamc@682	2566 if (ctx->client)
adamc@685	2567 release_client(ctx->client);
adamc@671	2568
adamc@885	2569 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adamc@885	2570 cl->func(cl->arg);
adamc@885	2571
adamc@885	2572 ctx->cleanup_front = ctx->cleanup;
adamc@885	2573
adamc@771	2574 for (i = 0; i < ctx->used_transactionals; ++i)
adamc@771	2575 if (ctx->transactionals[i].rollback != NULL)
adamc@771	2576 ctx->transactionals[i].rollback(ctx->transactionals[i].data);
adamc@771	2577
adamc@771	2578 for (i = 0; i < ctx->used_transactionals; ++i)
adamc@771	2579 ctx->transactionals[i].free(ctx->transactionals[i].data);
adamc@771	2580
adamc@671	2581 return uw_db_rollback(ctx);
adamc@671	2582 }
adamc@683	2583
adamc@771	2584 void uw_register_transactional(uw_context ctx, void *data, uw_callback commit, uw_callback rollback,
adamc@771	2585 uw_callback free) {
adamc@771	2586 if (commit == NULL)
adamc@771	2587 uw_error(ctx, FATAL, "uw_register_transactional: NULL commit callback");
adamc@771	2588
adamc@771	2589 if (ctx->used_transactionals >= ctx->n_transactionals) {
adamc@771	2590 ctx->transactionals = realloc(ctx->transactionals, ctx->used_transactionals+1);
adamc@771	2591 ++ctx->n_transactionals;
adamc@771	2592 }
adamc@771	2593
adamc@771	2594 ctx->transactionals[ctx->used_transactionals].data = data;
adamc@771	2595 ctx->transactionals[ctx->used_transactionals].commit = commit;
adamc@771	2596 ctx->transactionals[ctx->used_transactionals].rollback = rollback;
adamc@771	2597 ctx->transactionals[ctx->used_transactionals++].free = free;
adamc@771	2598 }
adamc@771	2599
adamc@683	2600
adamc@683	2601 // "Garbage collection"
adamc@683	2602
adamc@683	2603 void uw_expunger(uw_context ctx, uw_Basis_client cli);
adamc@683	2604
adamc@683	2605 static failure_kind uw_expunge(uw_context ctx, uw_Basis_client cli) {
adamc@683	2606 int r = setjmp(ctx->jmp_buf);
adamc@683	2607
adamc@684	2608 if (r == 0) {
adamc@684	2609 if (uw_db_begin(ctx))
adamc@684	2610 uw_error(ctx, FATAL, "Error running SQL BEGIN");
adamc@683	2611 uw_expunger(ctx, cli);
adamc@684	2612 if (uw_db_commit(ctx))
adamc@684	2613 uw_error(ctx, FATAL, "Error running SQL COMMIT");
adamc@684	2614 }
adamc@683	2615
adamc@683	2616 return r;
adamc@683	2617 }
adamc@683	2618
adamc@683	2619 void uw_prune_clients(uw_context ctx) {
adamc@683	2620 client c, next, *prev = NULL;
adamc@683	2621 time_t cutoff;
adamc@683	2622
adamc@683	2623 cutoff = time(NULL) - uw_timeout;
adamc@683	2624
adamc@683	2625 pthread_mutex_lock(&clients_mutex);
adamc@683	2626
adamc@683	2627 for (c = clients_used; c; c = next) {
adamc@683	2628 next = c->next;
adamc@683	2629 pthread_mutex_lock(&c->lock);
adamc@685	2630 if (c->last_contact < cutoff && c->refcount == 0) {
adamc@683	2631 failure_kind fk = UNLIMITED_RETRY;
adamc@683	2632 if (prev)
adamc@683	2633 prev->next = next;
adamc@683	2634 else
adamc@683	2635 clients_used = next;
adamc@684	2636 uw_reset(ctx);
adamc@683	2637 while (fk == UNLIMITED_RETRY) {
adamc@683	2638 fk = uw_expunge(ctx, c->id);
adamc@684	2639 if (fk == UNLIMITED_RETRY) {
adamc@684	2640 uw_db_rollback(ctx);
adamc@684	2641 printf("Unlimited retry during expunge: %s\n", uw_error_message(ctx));
adamc@683	2642 }
adamc@683	2643 }
adamc@684	2644 if (fk == SUCCESS)
adamc@684	2645 free_client(c);
adamc@684	2646 else {
adamc@684	2647 uw_db_rollback(ctx);
adamc@856	2648 fprintf(stderr, "Expunge blocked by error: %s\n", uw_error_message(ctx));
adamc@684	2649 }
adamc@683	2650 }
adamc@683	2651 else
adamc@683	2652 prev = c;
adamc@683	2653 pthread_mutex_unlock(&c->lock);
adamc@683	2654 }
adamc@683	2655
adamc@683	2656 pthread_mutex_unlock(&clients_mutex);
adamc@683	2657 }
adamc@687	2658
adamc@687	2659 void uw_initializer(uw_context ctx);
adamc@687	2660
adamc@687	2661 failure_kind uw_initialize(uw_context ctx) {
adamc@687	2662 int r = setjmp(ctx->jmp_buf);
adamc@687	2663
adamc@687	2664 if (r == 0) {
adamc@687	2665 if (uw_db_begin(ctx))
adamc@687	2666 uw_error(ctx, FATAL, "Error running SQL BEGIN");
adamc@687	2667 uw_initializer(ctx);
adamc@687	2668 if (uw_db_commit(ctx))
adamc@687	2669 uw_error(ctx, FATAL, "Error running SQL COMMIT");
adamc@687	2670 }
adamc@687	2671
adamc@687	2672 return r;
adamc@687	2673 }
adamc@717	2674
adamc@770	2675 extern int uw_check_url(const char *);
adamc@770	2676 extern int uw_check_mime(const char *);
adamc@770	2677
adamc@717	2678 uw_Basis_string uw_Basis_bless(uw_context ctx, uw_Basis_string s) {
adamc@770	2679 if (uw_check_url(s))
adamc@770	2680 return s;
adamc@770	2681 else
adamc@770	2682 uw_error(ctx, FATAL, "Disallowed URL %s", uw_Basis_htmlifyString(ctx, s));
adamc@717	2683 }
adamc@734	2684
adamc@770	2685 uw_Basis_string uw_Basis_checkUrl(uw_context ctx, uw_Basis_string s) {
adamc@770	2686 if (uw_check_url(s))
adamc@770	2687 return s;
adamc@770	2688 else
adamc@770	2689 return NULL;
adamc@770	2690 }
adamc@770	2691
adamc@770	2692 int mime_format(const char *s) {
adamc@770	2693 for (; *s; ++s)
adamc@770	2694 if (!isalnum(s) && s != '/' && s != '-' && s != '.')
adamc@770	2695 return 0;
adamc@770	2696
adamc@770	2697 return 1;
adamc@770	2698 }
adamc@770	2699
adamc@741	2700 uw_Basis_string uw_Basis_blessMime(uw_context ctx, uw_Basis_string s) {
adamc@770	2701 if (!mime_format(s))
adamc@770	2702 uw_error(ctx, FATAL, "MIME type \"%s\" contains invalid character", uw_Basis_htmlifyString(ctx, s));
adamc@770	2703
adamc@770	2704 if (uw_check_mime(s))
adamc@770	2705 return s;
adamc@770	2706 else
adamc@770	2707 uw_error(ctx, FATAL, "Disallowed MIME type %s", uw_Basis_htmlifyString(ctx, s));
adamc@770	2708 }
adamc@770	2709
adamc@770	2710 uw_Basis_string uw_Basis_checkMime(uw_context ctx, uw_Basis_string s) {
adamc@770	2711 if (!mime_format(s))
adamc@770	2712 return NULL;
adamc@770	2713
adamc@770	2714 if (uw_check_mime(s))
adamc@770	2715 return s;
adamc@770	2716 else
adamc@770	2717 return NULL;
adamc@741	2718 }
adamc@741	2719
adamc@734	2720 uw_Basis_string uw_unnull(uw_Basis_string s) {
adamc@734	2721 return s ? s : "";
adamc@734	2722 }
adamc@734	2723
adamc@734	2724 extern int uw_hash_blocksize;
adamc@734	2725
adamc@734	2726 uw_Basis_string uw_Basis_makeSigString(uw_context ctx, uw_Basis_string sig) {
adamc@734	2727 uw_Basis_string r = uw_malloc(ctx, 2 * uw_hash_blocksize + 1);
adamc@734	2728 int i;
adamc@734	2729
adamc@734	2730 for (i = 0; i < uw_hash_blocksize; ++i)
adamc@734	2731 sprintf(&r[2i], "%.02X", ((unsigned char )sig)[i]);
adamc@734	2732
adamc@734	2733 return r;
adamc@734	2734 }
adamc@734	2735
adamc@734	2736 uw_Basis_string uw_Basis_sigString(uw_context ctx, uw_unit u) {
adamc@734	2737 return uw_cookie_sig(ctx);
adamc@734	2738 }
adamc@737	2739
adamc@737	2740 uw_Basis_string uw_Basis_fileName(uw_context ctx, uw_Basis_file f) {
adamc@737	2741 return f.name;
adamc@737	2742 }
adamc@737	2743
adamc@740	2744 uw_Basis_string uw_Basis_fileMimeType(uw_context ctx, uw_Basis_file f) {
adamc@740	2745 return f.type;
adamc@740	2746 }
adamc@740	2747
adamc@745	2748 uw_Basis_int uw_Basis_blobSize(uw_context ctx, uw_Basis_blob b) {
adamc@745	2749 return b.size;
adamc@745	2750 }
adamc@745	2751
adamc@737	2752 uw_Basis_blob uw_Basis_fileData(uw_context ctx, uw_Basis_file f) {
adamc@737	2753 return f.data;
adamc@737	2754 }
adamc@741	2755
adamc@741	2756 __attribute__((noreturn)) void uw_return_blob(uw_context ctx, uw_Basis_blob b, uw_Basis_string mimeType) {
adamc@741	2757 cleanup *cl;
adamc@741	2758 int len;
adamc@741	2759
adamc@741	2760 buf_reset(&ctx->outHeaders);
adamc@741	2761 buf_reset(&ctx->page);
adamc@741	2762
adamc@856	2763 uw_write_header(ctx, on_success);
adamc@856	2764 uw_write_header(ctx, "Content-Type: ");
adamc@741	2765 uw_write_header(ctx, mimeType);
adamc@741	2766 uw_write_header(ctx, "\r\nContent-Length: ");
adamc@741	2767 buf_check(&ctx->outHeaders, INTS_MAX);
adamc@741	2768 sprintf(ctx->outHeaders.front, "%d%n", b.size, &len);
adamc@741	2769 ctx->outHeaders.front += len;
adamc@741	2770 uw_write_header(ctx, "\r\n");
adamc@741	2771
adamc@741	2772 buf_append(&ctx->page, b.data, b.size);
adamc@741	2773
adamc@741	2774 for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
adamc@741	2775 cl->func(cl->arg);
adamc@741	2776
adamc@741	2777 ctx->cleanup_front = ctx->cleanup;
adamc@741	2778
adamc@741	2779 longjmp(ctx->jmp_buf, RETURN_BLOB);
adamc@741	2780 }
adamc@874	2781
adamc@874	2782 uw_Basis_string uw_Basis_unAs(uw_context ctx, uw_Basis_string s) {
adamc@874	2783 uw_Basis_string r = uw_malloc(ctx, strlen(s) + 1);
adamc@874	2784
adamc@874	2785 for (; *s; ++s) {
adamc@874	2786 if (s[0] == '\'') {
adamc@874	2787 *r++ = '\'';
adamc@874	2788 for (++s; *s; ++s) {
adamc@874	2789 if (s[0] == '\'') {
adamc@874	2790 *r++ = '\'';
adamc@874	2791 break;
adamc@874	2792 } else if (s[0] == '\\') {
adamc@874	2793 if (s[1] == '\\') {
adamc@874	2794 *r++ = '\\';
adamc@874	2795 *r++ = '\\';
adamc@874	2796 ++s;
adamc@874	2797 } else if (s[1] == '\'') {
adamc@874	2798 *r++ = '\\';
adamc@874	2799 *r++ = '\'';
adamc@874	2800 ++s;
adamc@874	2801 } else
adamc@874	2802 *r++ = '\'';
adamc@874	2803 } else
adamc@874	2804 *r++ = s[0];
adamc@874	2805 }
adamc@874	2806 if (*s == 0) break;
adamc@874	2807 } else if (s[0] == 'T' && s[1] == '.')
adamc@874	2808 ++s;
adamc@874	2809 else
adamc@874	2810 *r++ = s[0];
adamc@874	2811 }
adamc@874	2812
adamc@874	2813 return r;
adamc@874	2814 }
adamc@874	2815

Mercurial > urweb

annotate src/c/urweb.c @ 898:d1d0b18afd3d