http/http_blerg.c

   1 /* Blerg is (C) 2011 The Dominion of Awesome, and is distributed under a
   2  * BSD-style license.  Please see the COPYING file for details.
   3  */
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <string.h>
   7 #include <microhttpd.h>
   8 #include <yajl/yajl_gen.h>
   9 #include "database.h"
  10 #include "tags.h"
  11 #include "subscription.h"
  12 #include "auth.h"
  13 #include "canned_responses.h"
  14 #include "app.h"
  15 #include "config.h"
  16
  17 yajl_gen_config yajl_c = { 0, 0 };
  18
  19 struct auth_state {
  20         struct MHD_PostProcessor *pp;
  21         char username[33];
  22         char password[33];
  23 };
  24
  25 struct put_state {
  26         struct MHD_PostProcessor *pp;
  27         char username[33];
  28         char *data;
  29         int data_size;
  30 };
  31
  32 struct get_state {
  33         struct blerg *b;
  34         yajl_gen g;
  35         unsigned int yoff;
  36         uint64_t *entries;
  37         uint64_t i;
  38         int done;
  39 };
  40
  41 struct blergref_state {
  42         yajl_gen g;
  43         unsigned int yoff;
  44         struct blergref *results;
  45         uint64_t i;
  46         int done;
  47 };
  48
  49 ssize_t GET_generate_list(void *cls, uint64_t pos, char *buf, size_t max) {
  50         struct get_state *gs = cls;
  51         const unsigned char *ybuf;
  52         char *data;
  53         char number[21];
  54         unsigned int len;
  55
  56         if (gs->yoff > 0) {
  57                 yajl_gen_get_buf(gs->g, &ybuf, &len);
  58                 size_t bytes_remaining = len - gs->yoff;
  59                 if (bytes_remaining > max) {
  60                         memcpy(buf, ybuf + gs->yoff, max);
  61                         gs->yoff += max;
  62                         return max;
  63                 } else {
  64                         memcpy(buf, ybuf + gs->yoff, bytes_remaining);
  65                         gs->yoff = 0;
  66                         yajl_gen_clear(gs->g);
  67                         return bytes_remaining;
  68                 }
  69         }
  70
  71         if (gs->done)
  72                 return -1;
  73
  74         if (pos == 0) { /* Start iterating */
  75                 yajl_gen_array_open(gs->g);
  76         }
  77
  78         /* Snarf one record */
  79         json_generate_one_record(gs->g, NULL, gs->b, gs->entries[gs->i], 0);
  80
  81         if (gs->i == 0) {
  82                 yajl_gen_array_close(gs->g);
  83                 gs->done = 1;
  84         }
  85         gs->i--;
  86
  87
  88         yajl_gen_get_buf(gs->g, &ybuf, &len);
  89         if (len > max) {
  90                 memcpy(buf, ybuf, max);
  91                 gs->yoff = max;
  92                 return max;
  93         } else {
  94                 memcpy(buf, ybuf, len);
  95                 yajl_gen_clear(gs->g);
  96                 return len;
  97         }
  98 }
  99
 100 void GET_generate_list_free(void *cls) {
 101         struct get_state *gs = cls;
 102
 103         blerg_close(gs->b);
 104         yajl_gen_free(gs->g);
 105         free(gs->entries);
 106         free(gs);
 107 }
 108
 109 ssize_t GET_generate_blergref_list(void *cls, uint64_t pos, char *buf, size_t max) {
 110         struct blergref_state *bs = cls;
 111         struct blerg *b;
 112         const unsigned char *ybuf;
 113         unsigned int len;
 114
 115         if (bs->yoff > 0) {
 116                 yajl_gen_get_buf(bs->g, &ybuf, &len);
 117                 size_t bytes_remaining = len - bs->yoff;
 118                 if (bytes_remaining > max) {
 119                         memcpy(buf, ybuf + bs->yoff, max);
 120                         bs->yoff += max;
 121                         return max;
 122                 } else {
 123                         memcpy(buf, ybuf + bs->yoff, bytes_remaining);
 124                         bs->yoff = 0;
 125                         yajl_gen_clear(bs->g);
 126                         return bytes_remaining;
 127                 }
 128         }
 129
 130         if (bs->done)
 131                 return -1;
 132
 133         if (pos == 0) { /* Start iterating */
 134                 yajl_gen_array_open(bs->g);
 135         }
 136
 137         /* Snarf one record */
 138         b = blerg_open(bs->results[bs->i].author);
 139         if (b != NULL) {
 140                 json_generate_one_record(bs->g, bs->results[bs->i].author, b, bs->results[bs->i].record, 0);
 141                 blerg_close(b);
 142         }
 143
 144         if (bs->i == 0) {
 145                 yajl_gen_array_close(bs->g);
 146                 bs->done = 1;
 147         }
 148
 149         bs->i--;
 150
 151         yajl_gen_get_buf(bs->g, &ybuf, &len);
 152         if (len > max) {
 153                 memcpy(buf, ybuf, max);
 154                 bs->yoff = max;
 155                 return max;
 156         } else {
 157                 memcpy(buf, ybuf, len);
 158                 yajl_gen_clear(bs->g);
 159                 return len;
 160         }
 161 }
 162
 163 void GET_generate_blergref_list_free(void *cls) {
 164         struct blergref_state *bs = cls;
 165
 166         yajl_gen_free(bs->g);
 167         free(bs->results);
 168         free(bs);
 169 }
 170
 171 int POST_put_iterator(void *cls, enum MHD_ValueKind kind, const char *key, const char *filename, const char *content_type, const char *transfer_encoding, const char *data, uint64_t off, size_t size) {
 172         struct put_state *ps = cls;
 173
 174         if (strncmp(key, "data", 5) == 0) {
 175                 if (ps->data == NULL) {
 176                         ps->data_size = size;
 177                         ps->data = malloc(size);
 178                 } else {
 179                         if (ps->data_size + size > MAX_RECORD_SIZE) {
 180                                 size = MAX_RECORD_SIZE - ps->data_size;
 181                         }
 182                         ps->data_size += size;
 183                         ps->data = realloc(ps->data, ps->data_size);
 184                 }
 185                 memcpy(ps->data + off, data, size);
 186                 if (ps->data_size == MAX_RECORD_SIZE)
 187                         return MHD_NO;
 188         } else if (strncmp(key, "username", 9) == 0) {
 189                 if (size > 32) size = 32;
 190                 memcpy(ps->username, data, size);
 191                 ps->username[size] = 0;
 192         }
 193
 194         return MHD_YES;
 195 }
 196
 197 int process_put(struct MHD_Connection *connection, const char *method, const char *upload_data, size_t *upload_data_size, void **ptr) {
 198         struct put_state *ps = (struct put_state *) *ptr;
 199
 200         if (ps == NULL) {
 201                 if (strcmp(method, MHD_HTTP_METHOD_POST) != 0)
 202                         return respond_405(connection);
 203
 204                 *ptr = (void *) 1;
 205
 206                 struct put_state *ps = malloc(sizeof(struct put_state));
 207                 ps->data = NULL;
 208                 ps->data_size = 0;
 209                 ps->pp = MHD_create_post_processor(connection, 16384, &POST_put_iterator, ps);
 210                 ps->username[0] = 0;
 211                 *ptr = ps;
 212                 return MHD_YES;
 213         }
 214
 215         if (*upload_data_size) {
 216                 MHD_post_process(ps->pp, upload_data, *upload_data_size);
 217                 *upload_data_size = 0;
 218                 return MHD_YES;
 219         }
 220
 221         return MHD_NO;
 222 }
 223
 224 int process_and_check_put(struct MHD_Connection *connection, const char *method, const char *upload_data, size_t *upload_data_size, void **ptr) {
 225         struct put_state *ps = (struct put_state *) *ptr;
 226
 227         if (process_put(connection, method, upload_data, upload_data_size, ptr) == MHD_YES)
 228                 return MHD_YES;
 229
 230         const char *given_token = MHD_lookup_connection_value(connection, MHD_COOKIE_KIND, "auth");
 231         if (!auth_check_token(ps->username, given_token))
 232                 return respond_403(connection);
 233
 234         return MHD_NO;
 235 }
 236
 237 int POST_auth_iterator(void *cls, enum MHD_ValueKind kind, const char *key, const char *filename, const char *content_type, const char *transfer_encoding, const char *data, uint64_t off, size_t size) {
 238         struct auth_state *as = cls;
 239
 240         if (strncmp(key, "username", 9) == 0) {
 241                 if (size > 32) size = 32;
 242                 memcpy(as->username, data, size);
 243                 as->username[size] = 0;
 244         } else if (strncmp(key, "password", 9) == 0) {
 245                 if (size > 32) size = 32;
 246                 memcpy(as->password, data, size);
 247                 as->password[size] = 0;
 248         }
 249
 250         return MHD_YES;
 251 }
 252
 253 int process_auth(struct MHD_Connection *connection, const char *method, const char *upload_data, size_t *upload_data_size, void **ptr) {
 254         struct auth_state *as = (struct auth_state *) *ptr;
 255
 256         if (as == NULL) {
 257                 if (strcmp(method, MHD_HTTP_METHOD_POST) != 0)
 258                         return respond_405(connection);
 259
 260                 as = malloc(sizeof(struct auth_state));
 261                 as->username[0] = as->password[0] = 0;
 262                 as->pp = MHD_create_post_processor(connection, 1024, &POST_auth_iterator, as);
 263                 *ptr = as;
 264                 return MHD_YES;
 265         }
 266
 267         if (*upload_data_size) {
 268                 MHD_post_process(as->pp, upload_data, *upload_data_size);
 269                 *upload_data_size = 0;
 270                 return MHD_YES;
 271         }
 272
 273         return MHD_NO;
 274 }
 275
 276 int process_and_check_auth(struct MHD_Connection *connection, const char *method, const char *upload_data, size_t *upload_data_size, void **ptr) {
 277         struct auth_state *as = (struct auth_state *) *ptr;
 278
 279         if (process_auth(connection, method, upload_data, upload_data_size, ptr) == MHD_YES)
 280                 return MHD_YES;
 281
 282         const char *given_token = MHD_lookup_connection_value(connection, MHD_COOKIE_KIND, "auth");
 283         if (!auth_check_token(as->username, given_token))
 284                 return respond_403(connection);
 285
 286         return MHD_NO;
 287 }
 288
 289 struct MHD_Response *create_response_for_range(struct blerg *b, uint64_t from, uint64_t to) {
 290         struct MHD_Response *response;
 291         struct get_state *gs = malloc(sizeof(struct get_state));
 292         gs->b = b;
 293
 294         uint64_t record_count = blerg_get_record_count(b);
 295
 296         if (from > to || from >= record_count || to >= record_count || to - from > 99) {
 297                 free(gs);
 298                 return NULL;
 299         }
 300
 301         gs->entries = make_sequential_list(from, to);
 302         gs->i = to - from;
 303
 304         gs->g = yajl_gen_alloc(&yajl_c, NULL);
 305         gs->yoff = gs->done = 0;
 306
 307         response = MHD_create_response_from_callback(-1, 262144, &GET_generate_list, gs, &GET_generate_list_free);
 308
 309         return response;
 310 }
 311
 312 struct MHD_Response *create_blergref_response(struct blergref *results, uint64_t len) {
 313         struct blergref_state *bs = malloc(sizeof(struct blergref_state));
 314         bs->g = yajl_gen_alloc(&yajl_c, NULL);
 315         bs->results = results;
 316         bs->i = len - 1;
 317         bs->yoff = bs->done = 0;
 318
 319         return MHD_create_response_from_callback(-1, 262144, &GET_generate_blergref_list, bs, &GET_generate_blergref_list_free);
 320 }
 321
 322 static int
 323 ahc_derp (void *cls, struct MHD_Connection *connection, const char *url, const char *method,
 324           const char *version, const char *upload_data, size_t *upload_data_size, void **ptr) {
 325         struct MHD_Response *response;
 326         int ret, len;
 327         struct url_info info;
 328         char *data;
 329
 330         if (strncmp(url, "/get", 4) == 0 && strlen(url) > 4) {
 331                 if (*ptr == NULL) {
 332                         if (strcmp(method, MHD_HTTP_METHOD_GET) != 0)
 333                                 return respond_405(connection);
 334
 335                         *ptr = (void *) 1;
 336                         return MHD_YES;
 337                 }
 338
 339                 if (url[4] != '/')
 340                         return respond_404(connection);
 341
 342                 ret = parse_url_info(url + 5, &info);
 343                 if ((ret & URL_INFO_NAME) == 0)
 344                         return respond_404(connection);
 345
 346                 if (!blerg_exists(info.name))
 347                         return respond_404(connection);
 348
 349                 *ptr == NULL;
 350
 351                 struct blerg *b = blerg_open(info.name);
 352
 353                 if ((ret & URL_INFO_RECORD) && (ret & URL_INFO_RECORD_TO)) {
 354                         response = create_response_for_range(b, info.record, info.record_to);
 355                 } else if (ret & URL_INFO_RECORD) {
 356                         ret = blerg_fetch(b, info.record, &data, &len);
 357                         blerg_close(b);
 358
 359                         if (ret == 0)
 360                                 return respond_404(connection);
 361                         response = MHD_create_response_from_data(len, data, MHD_YES, MHD_NO);
 362                 } else {
 363                         uint64_t record_count, from, to;
 364                         record_count = blerg_get_record_count(b);
 365                         if (record_count == 0) {
 366                                 blerg_close(b);
 367                                 response = MHD_create_response_from_data(2, "[]", MHD_NO, MHD_NO);
 368                         } else {
 369                                 to = record_count - 1;
 370                                 from = (record_count > 50 ? to - 49 : 0);
 371                                 response = create_response_for_range(b, from, to);
 372                         }
 373                 }
 374
 375                 if (response == NULL) {
 376                         blerg_close(b);
 377                         return respond_JSON_Failure(connection);
 378                 }
 379
 380                 ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
 381                 MHD_destroy_response(response);
 382                 return ret;
 383         } else if (strncmp(url, "/tag", 4) == 0 && strlen(url) > 4) {
 384                 if (*ptr == NULL) {
 385                         if (strcmp(method, MHD_HTTP_METHOD_GET) != 0)
 386                                 return respond_405(connection);
 387
 388                         *ptr = (void *) 1;
 389                         return MHD_YES;
 390                 }
 391
 392                 if (url[4] != '/')
 393                         return respond_404(connection);
 394
 395                 ret = parse_url_info(url + 5, &info);
 396                 if ((ret & URL_INFO_NAME) == 0)
 397                         return respond_404(connection);
 398
 399                 if (info.name[0] == 'H')
 400                         info.name[0] = '#';
 401                 if (!tag_exists(info.name))
 402                         return respond_404(connection);
 403
 404                 int recs = 50;
 405                 struct blergref *taglist = tag_list(info.name, 0, &recs, -1);
 406
 407                 if (recs == 0) {
 408                         response = MHD_create_response_from_data(2, "[]", MHD_NO, MHD_NO);
 409                 } else {
 410                         response = create_blergref_response(taglist, recs);
 411                 }
 412
 413                 if (response == NULL)
 414                         return respond_JSON_Failure(connection);
 415
 416                 ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
 417                 MHD_destroy_response(response);
 418
 419                 return ret;
 420         } else if (strncmp(url, "/put", 4) == 0) {
 421                 if (url[4] == '/')
 422                         return respond_404(connection);
 423
 424                 ret = process_and_check_put(connection, method, upload_data, upload_data_size, ptr);
 425                 if (ret == MHD_YES)
 426                         return MHD_YES;
 427
 428                 struct put_state *ps = (struct put_state *) *ptr;
 429
 430                 if (ps->data == NULL || ps->data_size == 0)
 431                         return respond_JSON_Failure(connection);
 432
 433                 struct blerg *b = blerg_open(ps->username);
 434                 if (b == NULL)
 435                         return respond_JSON_Failure(connection);
 436                 ret = blerg_store(b, ps->data, ps->data_size);
 437                 blerg_close(b);
 438                 if (ret == -1)
 439                         return respond_JSON_Failure(connection);
 440
 441                 MHD_destroy_post_processor(ps->pp);
 442                 free(ps->data);
 443                 free(ps);
 444                 *ptr = NULL;
 445
 446                 return respond_JSON_Success(connection);
 447         } else if (strncmp(url, "/info", 5) == 0) {
 448                 if (*ptr == NULL) {
 449                         *ptr = (void *) 1;
 450
 451                         if (strcmp(method, MHD_HTTP_METHOD_GET) != 0)
 452                                 return respond_405(connection);
 453                         return MHD_YES;
 454                 }
 455
 456
 457                 if (url[5] != '/')
 458                         return respond_404(connection);
 459
 460                 ret = parse_url_info(url + 6, &info);
 461                 if ((ret & URL_INFO_NAME) == 0)
 462                         return respond_404(connection);
 463
 464                 if (!blerg_exists(info.name))
 465                         return respond_404(connection);
 466
 467                 *ptr == NULL;
 468
 469                 struct blerg *b = blerg_open(info.name);
 470                 uint64_t record_count = blerg_get_record_count(b);
 471                 blerg_close(b);
 472
 473                 char number[21];
 474                 yajl_gen g = yajl_gen_alloc(&yajl_c, NULL);
 475                 yajl_gen_map_open(g);
 476                 yajl_gen_string(g, "record_count", 12);
 477                 snprintf(number, 21, "%llu", record_count);
 478                 yajl_gen_string(g, number, strlen(number));
 479                 yajl_gen_map_close(g);
 480
 481                 const unsigned char *ybuf;
 482                 yajl_gen_get_buf(g, &ybuf, &len);
 483
 484                 response = MHD_create_response_from_data(len, (void *)ybuf, MHD_NO, MHD_YES);
 485                 ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
 486                 MHD_destroy_response(response);
 487
 488                 yajl_gen_free(g);
 489
 490                 return ret;
 491         } else if (strncmp(url, "/create", 8) == 0) {
 492                 ret = process_auth(connection, method, upload_data, upload_data_size, ptr);
 493                 if (ret == MHD_YES)
 494                         return MHD_YES;
 495
 496                 struct auth_state *as = (struct auth_state *) *ptr;
 497
 498                 if (as->username[0] == 0 || as->password[0] == 0)
 499                         return respond_JSON_Failure(connection);
 500
 501                 if (blerg_exists(as->username))
 502                         return respond_JSON_Failure(connection);
 503
 504                 struct blerg *b = blerg_open(as->username);
 505                 blerg_close(b);
 506                 auth_set_password(as->username, as->password);
 507
 508                 MHD_destroy_post_processor(as->pp);
 509                 free(as);
 510                 *ptr = NULL;
 511
 512                 return respond_JSON_Success(connection);
 513         } else if (strncmp(url, "/login", 7) == 0) {
 514                 ret = process_auth(connection, method, upload_data, upload_data_size, ptr);
 515                 if (ret == MHD_YES)
 516                         return MHD_YES;
 517
 518                 struct auth_state *as = (struct auth_state *) *ptr;
 519
 520                 if (as->username[0] == 0 || as->password[0] == 0)
 521                         return respond_JSON_Failure(connection);
 522
 523                 char *token = auth_login(as->username, as->password);
 524                 if (token == NULL)
 525                         return respond_JSON_Failure(connection);
 526
 527                 response = MHD_create_response_from_data(strlen(JSON_SUCCESS), JSON_SUCCESS, MHD_NO, MHD_NO);
 528
 529                 data = malloc(512);
 530                 snprintf(data, 512, "auth=%s", token);
 531                 MHD_add_response_header(response, "Set-Cookie", data);
 532                 free(token);
 533                 free(data);
 534
 535                 MHD_destroy_post_processor(as->pp);
 536                 free(as);
 537                 *ptr = NULL;
 538
 539                 ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
 540                 MHD_destroy_response(response);
 541
 542                 return ret;
 543         } else if (strncmp(url, "/logout", 8) == 0) {
 544                 ret = process_and_check_auth(connection, method, upload_data, upload_data_size, ptr);
 545                 if (ret == MHD_YES)
 546                         return MHD_YES;
 547
 548                 struct auth_state *as = (struct auth_state *) *ptr;
 549
 550                 const char *given_token = MHD_lookup_connection_value(connection, MHD_COOKIE_KIND, "auth");
 551                 auth_logout(as->username, given_token);
 552                 return respond_JSON_Success(connection);
 553         } else if (strncmp(url, "/subscribe", 10) == 0 || strncmp(url, "/unsubscribe", 12) == 0) {
 554                 ret = process_and_check_auth(connection, method, upload_data, upload_data_size, ptr);
 555                 if (ret == MHD_YES)
 556                         return MHD_YES;
 557
 558                 struct auth_state *as = (struct auth_state *) *ptr;
 559
 560                 if (url[1] == 'u') {
 561                         if (url[12] != '/')
 562                                 return respond_404(connection);
 563
 564                         ret = parse_url_info(url + 13, &info);
 565                         if ((ret & URL_INFO_NAME) == 0)
 566                                 return respond_404(connection);
 567
 568                         subscription_remove(as->username, info.name);
 569                 } else {
 570                         if (url[10] != '/')
 571                                 return respond_404(connection);
 572
 573                         ret = parse_url_info(url + 11, &info);
 574                         if ((ret & URL_INFO_NAME) == 0)
 575                                 return respond_404(connection);
 576
 577                         subscription_add(as->username, info.name);
 578                 }
 579                 return respond_JSON_Success(connection);
 580         } else if (strncmp(url, "/feed", 6) == 0) {
 581                 ret = process_and_check_auth(connection, method, upload_data, upload_data_size, ptr);
 582                 if (ret == MHD_YES)
 583                         return MHD_YES;
 584
 585                 struct auth_state *as = (struct auth_state *) *ptr;
 586
 587                 int recs = 50;
 588                 struct blergref *feedlist = subscription_list(as->username, 0, &recs, -1);
 589
 590                 if (recs == 0) {
 591                         response = MHD_create_response_from_data(2, "[]", MHD_NO, MHD_NO);
 592                 } else {
 593                         response = create_blergref_response(feedlist, recs);
 594                 }
 595
 596                 if (response == NULL)
 597                         return respond_JSON_Failure(connection);
 598
 599                 ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
 600                 MHD_destroy_response(response);
 601
 602                 return ret;
 603         } else if (strncmp(url, "/feedinfo", 9) == 0) {
 604                 ret = process_and_check_auth(connection, method, upload_data, upload_data_size, ptr);
 605                 if (ret == MHD_YES)
 606                         return MHD_YES;
 607
 608                 struct auth_state *as = (struct auth_state *) *ptr;
 609
 610                 if (url[9] != '/')
 611                         return respond_404(connection);
 612
 613                 ret = parse_url_info(url + 10, &info);
 614                 if ((ret & URL_INFO_NAME) == 0)
 615                         return respond_404(connection);
 616
 617                 yajl_gen g = yajl_gen_alloc(&yajl_c, NULL);
 618                 yajl_gen_map_open(g);
 619                 yajl_gen_string(g, "subscribed", 10);
 620                 yajl_gen_bool(g, is_subscribed(as->username, info.name));
 621                 yajl_gen_map_close(g);
 622
 623                 const unsigned char *ybuf;
 624                 yajl_gen_get_buf(g, &ybuf, &len);
 625
 626                 response = MHD_create_response_from_data(len, (void *)ybuf, MHD_NO, MHD_YES);
 627                 ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
 628                 MHD_destroy_response(response);
 629
 630                 yajl_gen_free(g);
 631                 free(as);
 632
 633                 return ret;
 634         } else {
 635                 return respond_404(connection);
 636         }
 637 }
 638
 639
 640 int main(int argc, char *argv[]) {
 641         struct MHD_Daemon *daemon;
 642         fd_set rs, ws, es;
 643         int max;
 644
 645         init_responses();
 646
 647         daemon = MHD_start_daemon(MHD_USE_DEBUG, HTTP_BLERG_PORT, NULL, NULL, &ahc_derp, NULL, MHD_OPTION_END);
 648         if (daemon == NULL) {
 649                 fprintf(stderr, "Could not start web server\n");
 650                 return 1;
 651         }
 652
 653         while (1) {
 654                 FD_ZERO(&rs); FD_ZERO(&ws); FD_ZERO(&es);
 655                 if (MHD_get_fdset(daemon, &rs, &ws, &es, &max) != MHD_YES) {
 656                         fprintf(stderr, "Fatal error getting fd sets\n");
 657                         break;
 658                 }
 659                 select(max + 1, &rs, &ws, &es, NULL);
 660                 MHD_run(daemon);
 661         }
 662         MHD_stop_daemon(daemon);
 663         return 0;
 664 }