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annotate src/c/request.c @ 2297:6d56080f495c

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Fix a read-after-free bug using a timestamp check
author Adam Chlipala <adam@chlipala.net>
date Thu, 19 Nov 2015 13:18:58 -0500
parents b6adfe99bb08
children
rev   line source
adamc@1268 1 #include "config.h"
adamc@1268 2
adamc@853 3 #include <stdio.h>
adamc@853 4 #include <string.h>
adamc@853 5 #include <stdlib.h>
adamc@853 6 #include <sys/types.h>
adamc@853 7 #include <sys/socket.h>
adamc@853 8 #include <netinet/in.h>
adamc@853 9 #include <unistd.h>
adamc@853 10 #include <signal.h>
adamc@853 11
adamc@853 12 #include <pthread.h>
adamc@853 13
adamc@853 14 #include "urweb.h"
grrwlf@1997 15 #include "request.h"
adamc@853 16
adamc@853 17 #define MAX_RETRIES 5
adamc@853 18
adamc@1152 19 void *memmem(const void *b1, size_t len1, const void *b2, size_t len2);
adamc@1152 20
adam@1327 21 static int try_rollback(uw_context ctx, int will_retry, void *logger_data, uw_logger log_error) {
adam@1327 22 int r = uw_rollback(ctx, will_retry);
adamc@853 23
adamc@853 24 if (r) {
adamc@856 25 log_error(logger_data, "Error running SQL ROLLBACK\n");
adamc@853 26 uw_reset(ctx);
adamc@1115 27 uw_write(ctx, "HTTP/1.1 500 Internal Server Error\r\n");
adamc@853 28 uw_write(ctx, "Content-type: text/plain\r\n\r\n");
adamc@853 29 uw_write(ctx, "Error running SQL ROLLBACK\n");
adamc@1115 30 uw_set_error_message(ctx, "Database error; you are probably out of storage space.");
adamc@853 31 }
adamc@853 32
adamc@853 33 return r;
adamc@853 34 }
adamc@853 35
grrwlf@1997 36 uw_context uw_request_new_context(int id, uw_app *app, uw_loggers *ls) {
grrwlf@1997 37 void *logger_data = ls->logger_data;
grrwlf@1997 38 uw_logger log_debug = ls->log_debug;
grrwlf@1997 39 uw_logger log_error = ls->log_error;
grrwlf@1997 40 uw_context ctx = uw_init(id, ls);
adamc@853 41 int retries_left = MAX_RETRIES;
adamc@1094 42 uw_set_app(ctx, app);
adamc@853 43
adamc@853 44 while (1) {
adamc@853 45 failure_kind fk = uw_begin_init(ctx);
adamc@853 46
adamc@853 47 if (fk == SUCCESS) {
adamc@856 48 log_debug(logger_data, "Database connection initialized.\n");
adamc@853 49 break;
adamc@853 50 } else if (fk == BOUNDED_RETRY) {
adamc@853 51 if (retries_left) {
adamc@856 52 log_debug(logger_data, "Initialization error triggers bounded retry: %s\n", uw_error_message(ctx));
adamc@853 53 --retries_left;
adamc@853 54 } else {
adamc@856 55 log_error(logger_data, "Fatal initialization error (out of retries): %s\n", uw_error_message(ctx));
adamc@853 56 uw_free(ctx);
adamc@853 57 return NULL;
adamc@853 58 }
adamc@853 59 } else if (fk == UNLIMITED_RETRY)
adamc@856 60 log_debug(logger_data, "Initialization error triggers unlimited retry: %s\n", uw_error_message(ctx));
adamc@853 61 else if (fk == FATAL) {
adamc@856 62 log_error(logger_data, "Fatal initialization error: %s\n", uw_error_message(ctx));
adamc@853 63 uw_free(ctx);
adamc@853 64 return NULL;
adamc@853 65 } else {
adamc@856 66 log_error(logger_data, "Unknown uw_begin_init return code!\n");
adamc@853 67 uw_free(ctx);
adamc@853 68 return NULL;
adamc@853 69 }
adamc@853 70 }
adamc@853 71
adamc@853 72 return ctx;
adamc@853 73 }
adamc@853 74
adam@1308 75 static void *ticker(void *data) {
adam@1308 76 while (1) {
adam@1308 77 usleep(100000);
adam@1308 78 ++uw_time;
adam@1308 79 }
adam@1308 80
adam@1308 81 return NULL;
adam@1308 82 }
adam@1308 83
adam@1349 84 typedef struct {
grrwlf@1997 85 int id;
grrwlf@1997 86 uw_loggers *ls;
grrwlf@1997 87 uw_periodic pdic;
adam@1349 88 uw_app *app;
adam@1349 89 } periodic;
adam@1349 90
adam@1349 91 static void *periodic_loop(void *data) {
adam@1349 92 periodic *p = (periodic *)data;
grrwlf@1997 93 uw_context ctx = uw_request_new_context(p->id, p->app, p->ls);
adam@1349 94
adam@1349 95 if (!ctx)
adam@1349 96 exit(1);
adam@1349 97
adam@1349 98 while (1) {
adam@1418 99 int retries_left = MAX_RETRIES;
adam@1418 100
adam@1349 101 failure_kind r;
adam@1349 102 do {
adam@1418 103 uw_reset(ctx);
adam@1349 104 r = uw_runCallback(ctx, p->pdic.callback);
adam@1418 105 if (r == BOUNDED_RETRY)
adam@1418 106 --retries_left;
adam@1418 107 else if (r == UNLIMITED_RETRY)
adam@1418 108 p->ls->log_debug(p->ls->logger_data, "Error triggers unlimited retry in periodic: %s\n", uw_error_message(ctx));
adam@1418 109 else if (r == BOUNDED_RETRY)
adam@1418 110 p->ls->log_debug(p->ls->logger_data, "Error triggers bounded retry in periodic: %s\n", uw_error_message(ctx));
adam@1418 111 else if (r == FATAL)
adam@1418 112 p->ls->log_error(p->ls->logger_data, "Fatal error: %s\n", uw_error_message(ctx));
adam@1418 113 if (r == FATAL || r == BOUNDED_RETRY || r == UNLIMITED_RETRY)
adam@1437 114 if (try_rollback(ctx, 0, p->ls->logger_data, p->ls->log_error))
adam@1437 115 return NULL;
adam@1418 116 } while (r == UNLIMITED_RETRY || (r == BOUNDED_RETRY && retries_left > 0));
adam@1418 117
adam@1938 118 if (r != FATAL && r != BOUNDED_RETRY) {
adam@1938 119 if (uw_commit(ctx))
adam@1938 120 r = UNLIMITED_RETRY;
adam@1938 121 }
adam@1349 122
adam@1349 123 sleep(p->pdic.period);
adam@1349 124 };
adam@1349 125 }
adam@1349 126
adam@1522 127 static unsigned long long stackSize;
adam@1522 128
adam@1522 129 int pthread_create_big(pthread_t *outThread, void *foo, void *threadFunc, void *arg)
adam@1522 130 {
adam@1882 131 if (stackSize > 0) {
adam@1882 132 int err;
adam@1882 133 pthread_attr_t stackSizeAttribute;
adam@1522 134
adam@1882 135 err = pthread_attr_init(&stackSizeAttribute);
adam@1882 136 if (err) return err;
adam@1522 137
adam@1522 138 err = pthread_attr_setstacksize(&stackSizeAttribute, stackSize);
adam@1522 139 if (err) return err;
adam@1882 140
adam@1882 141 return pthread_create(outThread, &stackSizeAttribute, threadFunc, arg);
adam@1882 142 } else {
adam@1882 143 return pthread_create(outThread, NULL, threadFunc, arg);
adam@1522 144 }
adam@1522 145 }
adam@1522 146
grrwlf@1997 147 void uw_request_init(uw_app *app, uw_loggers* ls) {
adamc@853 148 uw_context ctx;
adamc@853 149 failure_kind fk;
adam@1349 150 uw_periodic *ps;
adam@1446 151 int id;
adam@1522 152 char *stackSize_s;
adam@1522 153
grrwlf@1997 154 uw_logger log_debug = ls->log_debug;
grrwlf@1997 155 uw_logger log_error = ls->log_error;
grrwlf@1997 156 void* logger_data = ls->logger_data;
grrwlf@1997 157
adam@1522 158 if ((stackSize_s = getenv("URWEB_STACK_SIZE")) != NULL && stackSize_s[0] != 0) {
adam@1522 159 stackSize = atoll(stackSize_s);
adam@1522 160
adam@1522 161 if (stackSize <= 0) {
adam@1522 162 fprintf(stderr, "Invalid stack size \"%s\"\n", stackSize_s);
adam@1522 163 exit(1);
adam@1522 164 }
adam@1522 165 }
adam@1349 166
adamc@853 167 uw_global_init();
adamc@1094 168 uw_app_init(app);
adamc@853 169
adam@1308 170 {
adam@1308 171 pthread_t thread;
adam@1308 172
adam@1522 173 if (uw_time_max && pthread_create_big(&thread, NULL, ticker, NULL)) {
adam@1308 174 fprintf(stderr, "Error creating ticker thread\n");
adam@1308 175 exit(1);
adam@1308 176 }
adam@1308 177 }
adam@1308 178
grrwlf@1997 179 ctx = uw_request_new_context(0, app, ls);
adamc@853 180
adamc@853 181 if (!ctx)
adamc@853 182 exit(1);
adamc@853 183
adamc@853 184 for (fk = uw_initialize(ctx); fk == UNLIMITED_RETRY; fk = uw_initialize(ctx)) {
adamc@856 185 log_debug(logger_data, "Unlimited retry during init: %s\n", uw_error_message(ctx));
adam@1327 186 uw_rollback(ctx, 1);
adamc@853 187 uw_reset(ctx);
adamc@853 188 }
adamc@853 189
adamc@853 190 if (fk != SUCCESS) {
adamc@856 191 log_error(logger_data, "Failed to initialize database! %s\n", uw_error_message(ctx));
adam@1327 192 uw_rollback(ctx, 0);
adamc@853 193 exit(1);
adamc@853 194 }
adamc@853 195
adamc@853 196 uw_free(ctx);
adam@1349 197
adam@1446 198 id = 1;
adam@1349 199 for (ps = app->periodics; ps->callback; ++ps) {
adam@1349 200 pthread_t thread;
adam@1349 201 periodic *arg = malloc(sizeof(periodic));
adam@1446 202 arg->id = id++;
adam@1349 203 arg->ls = ls;
adam@1349 204 arg->pdic = *ps;
grrwlf@1997 205 arg->app = app;
adam@1349 206
adam@1522 207 if (pthread_create_big(&thread, NULL, periodic_loop, arg)) {
adam@1349 208 fprintf(stderr, "Error creating periodic thread\n");
adam@1349 209 exit(1);
adam@1349 210 }
adam@1349 211 }
adamc@853 212 }
adamc@853 213
adamc@853 214
adam@2017 215 struct uw_rc {
adam@1370 216 size_t path_copy_size, queryString_size;
adam@1370 217 char *path_copy, *queryString;
adam@2017 218 };
adamc@853 219
adamc@853 220 uw_request_context uw_new_request_context(void) {
adamc@853 221 uw_request_context r = malloc(sizeof(struct uw_rc));
adam@1371 222 r->path_copy_size = 0;
adam@1371 223 r->queryString_size = 1;
adamc@853 224 r->path_copy = malloc(0);
adam@1371 225 r->queryString = malloc(1);
adamc@853 226 return r;
adamc@853 227 }
adamc@853 228
adamc@853 229 void uw_free_request_context(uw_request_context r) {
adamc@853 230 free(r->path_copy);
adam@1370 231 free(r->queryString);
adamc@853 232 free(r);
adamc@853 233 }
adamc@853 234
adamc@854 235 request_result uw_request(uw_request_context rc, uw_context ctx,
adamc@854 236 char *method, char *path, char *query_string,
adamc@854 237 char *body, size_t body_len,
adamc@856 238 void (*on_success)(uw_context), void (*on_failure)(uw_context),
adamc@856 239 void *logger_data, uw_logger log_error, uw_logger log_debug,
adamc@863 240 int sock,
grrwlf@1997 241 int (*send)(int sockfd, const void *buf, ssize_t len),
adamc@863 242 int (*close)(int fd)) {
adamc@853 243 int retries_left = MAX_RETRIES;
adamc@853 244 failure_kind fk;
adamc@1134 245 int is_post = 0;
adamc@853 246 char *boundary = NULL;
adamc@1134 247 size_t boundary_len = 0;
adamc@854 248 char *inputs;
adamc@1094 249 const char *prefix = uw_get_url_prefix(ctx);
adamc@1169 250 char *s;
adam@1788 251 int had_error = 0, is_fancy = 0;
adam@1294 252 char errmsg[ERROR_BUF_LEN];
adamc@1169 253
adam@1417 254 uw_reset(ctx);
adam@1446 255
adam@1371 256 rc->queryString[0] = 0;
adam@1371 257
adamc@1169 258 for (s = path; *s; ++s) {
adamc@1169 259 if (s[0] == '%' && s[1] == '2' && s[2] == '7') {
adamc@1169 260 s[0] = '\'';
adamc@1169 261 memmove(s+1, s+3, strlen(s+3)+1);
adamc@1169 262 }
adamc@1169 263 }
adamc@853 264
adamc@1066 265 uw_set_currentUrl(ctx, path);
adamc@1066 266
adamc@854 267 if (!strcmp(method, "POST")) {
adamc@853 268 char *clen_s = uw_Basis_requestHeader(ctx, "Content-length");
adamc@853 269 if (!clen_s) {
adamc@1037 270 clen_s = "0";
adamc@1037 271 /*log_error(logger_data, "No Content-length with POST\n");
adamc@1037 272 return FAILED;*/
adamc@853 273 }
adamc@853 274 int clen = atoi(clen_s);
adamc@853 275 if (clen < 0) {
adamc@856 276 log_error(logger_data, "Negative Content-length with POST\n");
adamc@853 277 return FAILED;
adamc@853 278 }
adamc@853 279
adamc@854 280 if (body_len < clen) {
adamc@856 281 log_error(logger_data, "Request doesn't contain all POST data (according to Content-Length)\n");
adamc@853 282 return FAILED;
adamc@853 283 }
adamc@853 284
adamc@853 285 is_post = 1;
adam@1386 286 uw_isPost(ctx);
adamc@853 287
adamc@853 288 clen_s = uw_Basis_requestHeader(ctx, "Content-type");
adam@1788 289
adam@1788 290 if (!clen_s || strcasecmp(clen_s, "application/x-www-form-urlencoded"))
adam@1788 291 is_fancy = 1;
adam@1788 292
adamc@853 293 if (clen_s && !strncasecmp(clen_s, "multipart/form-data", 19)) {
adamc@853 294 if (strncasecmp(clen_s + 19, "; boundary=", 11)) {
adamc@856 295 log_error(logger_data, "Bad multipart boundary spec");
adamc@853 296 return FAILED;
adamc@853 297 }
adamc@853 298
adamc@853 299 boundary = clen_s + 28;
adamc@853 300 boundary[0] = '-';
adamc@853 301 boundary[1] = '-';
adamc@853 302 boundary_len = strlen(boundary);
adam@1787 303 } else if (clen_s) {
adam@1788 304 uw_Basis_postBody pb = {clen_s, body, body_len};
adam@1347 305 uw_postBody(ctx, pb);
adamc@853 306 }
adamc@854 307 } else if (strcmp(method, "GET")) {
adamc@856 308 log_error(logger_data, "Not ready for non-GET/POST command: %s\n", method);
adamc@853 309 return FAILED;
adamc@853 310 }
adamc@853 311
adamc@1094 312 if (!strncmp(path, prefix, strlen(prefix))
adamc@1094 313 && !strcmp(path + strlen(prefix), ".msgs")) {
adamc@853 314 char *id = uw_Basis_requestHeader(ctx, "UrWeb-Client");
adamc@853 315 char *pass = uw_Basis_requestHeader(ctx, "UrWeb-Pass");
adamc@853 316
adamc@853 317 if (sock < 0) {
adamc@856 318 log_error(logger_data, ".msgs requested, but not socket supplied\n");
adamc@853 319 return FAILED;
adamc@853 320 }
adamc@853 321
adamc@853 322 if (id && pass) {
adamc@853 323 unsigned idn = atoi(id);
adamc@864 324 uw_client_connect(idn, atoi(pass), sock, send, close, logger_data, log_error);
adam@1320 325 log_debug(logger_data, "Processed request for messages by client %u\n\n", idn);
adamc@853 326 return KEEP_OPEN;
adamc@853 327 }
adamc@853 328 else {
adamc@856 329 log_error(logger_data, "Missing fields in .msgs request: %s, %s\n\n", id, pass);
adamc@853 330 return FAILED;
adamc@853 331 }
adamc@853 332 }
adamc@853 333
adamc@853 334 if (boundary) {
adamc@854 335 char *part = body, *after_sub_headers, *header, *after_header;
adamc@853 336 size_t part_len;
adamc@853 337
adamc@853 338 part = strstr(part, boundary);
adamc@853 339 if (!part) {
adamc@856 340 log_error(logger_data, "Missing first multipart boundary\n");
adamc@853 341 return FAILED;
adamc@853 342 }
adamc@853 343 part += boundary_len;
adamc@853 344
adamc@853 345 while (1) {
adamc@853 346 char *name = NULL, *filename = NULL, *type = NULL;
adamc@853 347
adamc@853 348 if (part[0] == '-' && part[1] == '-')
adamc@853 349 break;
adamc@853 350
adamc@853 351 if (*part != '\r') {
adamc@856 352 log_error(logger_data, "No \\r after multipart boundary\n");
adamc@853 353 return FAILED;
adamc@853 354 }
adamc@853 355 ++part;
adamc@853 356 if (*part != '\n') {
adamc@856 357 log_error(logger_data, "No \\n after multipart boundary\n");
adamc@853 358 return FAILED;
adamc@853 359 }
adamc@853 360 ++part;
adamc@853 361
adamc@853 362 if (!(after_sub_headers = strstr(part, "\r\n\r\n"))) {
adamc@856 363 log_error(logger_data, "Missing end of headers after multipart boundary\n");
adamc@853 364 return FAILED;
adamc@853 365 }
adamc@853 366 after_sub_headers[2] = 0;
adamc@853 367 after_sub_headers += 4;
adamc@853 368
adamc@1134 369 for (header = part; (after_header = strstr(header, "\r\n")); header = after_header + 2) {
adamc@853 370 char *colon, *after_colon;
adamc@853 371
adamc@853 372 *after_header = 0;
adamc@853 373 if (!(colon = strchr(header, ':'))) {
adamc@856 374 log_error(logger_data, "Missing colon in multipart sub-header\n");
adamc@853 375 return FAILED;
adamc@853 376 }
adamc@853 377 *colon++ = 0;
adamc@853 378 if (*colon++ != ' ') {
adamc@856 379 log_error(logger_data, "No space after colon in multipart sub-header\n");
adamc@853 380 return FAILED;
adamc@853 381 }
adamc@853 382
adamc@853 383 if (!strcasecmp(header, "Content-Disposition")) {
adamc@853 384 if (strncmp(colon, "form-data; ", 11)) {
adamc@856 385 log_error(logger_data, "Multipart data is not \"form-data\"\n");
adamc@853 386 return FAILED;
adamc@853 387 }
adamc@853 388
adamc@1134 389 for (colon += 11; (after_colon = strchr(colon, '=')); colon = after_colon) {
adamc@853 390 char *data;
adamc@853 391 after_colon[0] = 0;
adamc@853 392 if (after_colon[1] != '"') {
adamc@856 393 log_error(logger_data, "Disposition setting is missing initial quote\n");
adamc@853 394 return FAILED;
adamc@853 395 }
adamc@853 396 data = after_colon+2;
adamc@853 397 if (!(after_colon = strchr(data, '"'))) {
adamc@856 398 log_error(logger_data, "Disposition setting is missing final quote\n");
adamc@853 399 return FAILED;
adamc@853 400 }
adamc@853 401 after_colon[0] = 0;
adamc@853 402 ++after_colon;
adamc@853 403 if (after_colon[0] == ';' && after_colon[1] == ' ')
adamc@853 404 after_colon += 2;
adamc@853 405
adamc@853 406 if (!strcasecmp(colon, "name"))
adamc@853 407 name = data;
adamc@853 408 else if (!strcasecmp(colon, "filename"))
adamc@853 409 filename = data;
adamc@853 410 }
adamc@853 411 } else if (!strcasecmp(header, "Content-Type")) {
adamc@853 412 type = colon;
adamc@853 413 }
adamc@853 414 }
adamc@853 415
adamc@854 416 part = memmem(after_sub_headers, body + body_len - after_sub_headers, boundary, boundary_len);
adamc@853 417 if (!part) {
adamc@856 418 log_error(logger_data, "Missing boundary after multipart payload\n");
adamc@853 419 return FAILED;
adamc@853 420 }
adamc@853 421 part[-2] = 0;
adamc@853 422 part_len = part - after_sub_headers - 2;
adamc@853 423 part[0] = 0;
adamc@853 424 part += boundary_len;
adamc@853 425
adamc@853 426 if (filename) {
adamc@853 427 uw_Basis_file f = {filename, type, {part_len, after_sub_headers}};
adamc@853 428
adamc@853 429 if (uw_set_file_input(ctx, name, f)) {
adamc@856 430 log_error(logger_data, "%s\n", uw_error_message(ctx));
adamc@853 431 return FAILED;
adamc@853 432 }
adamc@853 433 } else if (uw_set_input(ctx, name, after_sub_headers)) {
adamc@856 434 log_error(logger_data, "%s\n", uw_error_message(ctx));
adamc@853 435 return FAILED;
adamc@853 436 }
adamc@853 437 }
adamc@853 438 }
adam@1788 439 else if (!is_fancy) {
adamc@854 440 inputs = is_post ? body : query_string;
adamc@853 441
adamc@853 442 if (inputs) {
adamc@853 443 char *name, *value;
adam@1370 444 int len = strlen(inputs);
adam@1370 445
adam@1370 446 if (len+1 > rc->queryString_size) {
grrwlf@2068 447 char *qs = realloc(rc->queryString, len+1);
grrwlf@2068 448 if(qs == NULL) {
grrwlf@2063 449 log_error(logger_data, "queryString is too long (not enough memory)\n");
grrwlf@2063 450 return FAILED;
grrwlf@2063 451 }
grrwlf@2068 452 rc->queryString = qs;
adam@1370 453 rc->queryString_size = len+1;
adam@1370 454 }
adam@1370 455 strcpy(rc->queryString, inputs);
adamc@853 456
adamc@853 457 while (*inputs) {
adamc@853 458 name = inputs;
adamc@1134 459 if ((inputs = strchr(inputs, '&')))
adamc@853 460 *inputs++ = 0;
adamc@853 461 else
adamc@853 462 inputs = strchr(name, 0);
adamc@853 463
adamc@1134 464 if ((value = strchr(name, '='))) {
adamc@853 465 *value++ = 0;
adamc@853 466 if (uw_set_input(ctx, name, value)) {
adamc@856 467 log_error(logger_data, "%s\n", uw_error_message(ctx));
adamc@853 468 return FAILED;
adamc@853 469 }
adamc@853 470 }
adamc@853 471 else if (uw_set_input(ctx, name, "")) {
adamc@856 472 log_error(logger_data, "%s\n", uw_error_message(ctx));
adamc@853 473 return FAILED;
adamc@853 474 }
adamc@853 475 }
adamc@853 476 }
adamc@853 477 }
adamc@853 478
adamc@853 479 while (1) {
adam@1371 480 uw_setQueryString(ctx, rc->queryString);
adam@1371 481
adam@1294 482 if (!had_error) {
adam@1294 483 size_t path_len = strlen(path);
adamc@853 484
adam@1294 485 on_success(ctx);
adamc@853 486
adam@1294 487 if (path_len + 1 > rc->path_copy_size) {
grrwlf@2068 488 char *pc = realloc(rc->path_copy, path_len + 1);
grrwlf@2068 489 if(pc == NULL) {
grrwlf@2063 490 log_error(logger_data, "Path is too long (not enough memory)\n");
grrwlf@2063 491 return FAILED;
grrwlf@2063 492 }
grrwlf@2068 493 rc->path_copy = pc;
adam@1294 494 rc->path_copy_size = path_len + 1;
adam@1294 495 }
adam@1294 496 strcpy(rc->path_copy, path);
adam@1308 497
adam@1308 498 uw_set_deadline(ctx, uw_time + uw_time_max);
adam@1294 499 fk = uw_begin(ctx, rc->path_copy);
adam@1308 500 } else {
adam@1308 501 uw_set_deadline(ctx, uw_time + uw_time_max);
adam@1294 502 fk = uw_begin_onError(ctx, errmsg);
adam@1308 503 }
adam@1294 504
adamc@1065 505 if (fk == SUCCESS || fk == RETURN_INDIRECTLY) {
adamc@853 506 uw_commit(ctx);
adam@1294 507 if (uw_has_error(ctx) && !had_error) {
adamc@1131 508 log_error(logger_data, "Fatal error: %s\n", uw_error_message(ctx));
adamc@1131 509 uw_reset_keep_error_message(ctx);
adamc@1131 510 on_failure(ctx);
adam@1294 511
adam@1294 512 if (uw_get_app(ctx)->on_error) {
adam@1294 513 had_error = 1;
adam@1294 514 strcpy(errmsg, uw_error_message(ctx));
adam@1294 515 } else {
grrwlf@2030 516 try_rollback(ctx, 0, logger_data, log_error);
grrwlf@2030 517
adam@1294 518 uw_write_header(ctx, "Content-type: text/html\r\n");
adam@1294 519 uw_write(ctx, "<html><head><title>Fatal Error</title></head><body>");
adam@1294 520 uw_write(ctx, "Fatal error: ");
adam@1294 521 uw_write(ctx, uw_error_message(ctx));
adam@1294 522 uw_write(ctx, "\n</body></html>");
adamc@1131 523
adam@1294 524 return FAILED;
adam@1294 525 }
adamc@1131 526 } else
adam@1294 527 return had_error ? FAILED : SERVED;
adamc@853 528 } else if (fk == BOUNDED_RETRY) {
adamc@853 529 if (retries_left) {
adamc@856 530 log_debug(logger_data, "Error triggers bounded retry: %s\n", uw_error_message(ctx));
adamc@853 531 --retries_left;
adamc@853 532 }
adamc@853 533 else {
adamc@856 534 log_error(logger_data, "Fatal error (out of retries): %s\n", uw_error_message(ctx));
adamc@853 535
adam@1294 536 if (!had_error && uw_get_app(ctx)->on_error) {
adam@1294 537 had_error = 1;
adam@1294 538 strcpy(errmsg, uw_error_message(ctx));
adam@1294 539 } else {
grrwlf@2030 540 try_rollback(ctx, 0, logger_data, log_error);
grrwlf@2030 541
adam@1294 542 uw_reset_keep_error_message(ctx);
adam@1294 543 on_failure(ctx);
adam@1294 544 uw_write_header(ctx, "Content-type: text/plain\r\n");
adam@1294 545 uw_write(ctx, "Fatal error (out of retries): ");
adam@1294 546 uw_write(ctx, uw_error_message(ctx));
adam@1294 547 uw_write(ctx, "\n");
adam@1774 548
adam@1294 549 return FAILED;
adam@1294 550 }
adamc@853 551 }
adamc@853 552 } else if (fk == UNLIMITED_RETRY)
adamc@856 553 log_debug(logger_data, "Error triggers unlimited retry: %s\n", uw_error_message(ctx));
adamc@853 554 else if (fk == FATAL) {
adamc@856 555 log_error(logger_data, "Fatal error: %s\n", uw_error_message(ctx));
adamc@853 556
adam@1294 557 if (uw_get_app(ctx)->on_error && !had_error) {
adam@1294 558 had_error = 1;
adam@1294 559 strcpy(errmsg, uw_error_message(ctx));
adam@1294 560 } else {
grrwlf@2030 561 try_rollback(ctx, 0, logger_data, log_error);
grrwlf@2030 562
adam@1294 563 uw_reset_keep_error_message(ctx);
adam@1294 564 on_failure(ctx);
adam@1294 565 uw_write_header(ctx, "Content-type: text/html\r\n");
adam@1294 566 uw_write(ctx, "<html><head><title>Fatal Error</title></head><body>");
adam@1294 567 uw_write(ctx, "Fatal error: ");
adam@1294 568 uw_write(ctx, uw_error_message(ctx));
adam@1294 569 uw_write(ctx, "\n</body></html>");
adamc@853 570
adam@1294 571 return FAILED;
adam@1294 572 }
adamc@853 573 } else {
adamc@856 574 log_error(logger_data, "Unknown uw_handle return code!\n");
adamc@853 575
adam@1294 576 if (uw_get_app(ctx)->on_error && !had_error) {
adam@1294 577 had_error = 1;
adam@1294 578 strcpy(errmsg, "Unknown uw_handle return code");
adam@1294 579 } else {
grrwlf@2030 580 try_rollback(ctx, 0, logger_data, log_error);
grrwlf@2030 581
adam@1294 582 uw_reset_keep_request(ctx);
adam@1294 583 on_failure(ctx);
adam@1294 584 uw_write_header(ctx, "Content-type: text/plain\r\n");
adam@1294 585 uw_write(ctx, "Unknown uw_handle return code!\n");
adamc@853 586
adam@1294 587 return FAILED;
adam@1294 588 }
adamc@853 589 }
adamc@853 590
adam@1327 591 if (try_rollback(ctx, 1, logger_data, log_error))
adamc@853 592 return FAILED;
adamc@853 593
adamc@853 594 uw_reset_keep_request(ctx);
adamc@853 595 }
adamc@853 596 }
adamc@853 597
adamc@853 598 void *client_pruner(void *data) {
grrwlf@1997 599 pruner_data *pd = (pruner_data *)data;
grrwlf@1997 600 uw_context ctx = uw_request_new_context(0, pd->app, pd->loggers);
adamc@853 601
adamc@853 602 if (!ctx)
adamc@853 603 exit(1);
adamc@853 604
adamc@853 605 while (1) {
adamc@853 606 uw_prune_clients(ctx);
adamc@853 607 sleep(5);
adamc@853 608 }
adamc@853 609 }