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                 blerg_close(b);
 298                 free(gs);
 299                 return NULL;
 300         }
 301
 302         gs->entries = make_sequential_list(from, to);
 303         gs->i = to - from;
 304
 305         gs->g = yajl_gen_alloc(&yajl_c, NULL);
 306         gs->yoff = gs->done = 0;
 307
 308         response = MHD_create_response_from_callback(-1, 262144, &GET_generate_list, gs, &GET_generate_list_free);
 309
 310         return response;
 311 }
 312
 313 struct MHD_Response *create_blergref_response(struct blergref *results, uint64_t len) {
 314         struct blergref_state *bs = malloc(sizeof(struct blergref_state));
 315         bs->g = yajl_gen_alloc(&yajl_c, NULL);
 316         bs->results = results;
 317         bs->i = len - 1;
 318         bs->yoff = bs->done = 0;
 319
 320         return MHD_create_response_from_callback(-1, 262144, &GET_generate_blergref_list, bs, &GET_generate_blergref_list_free);
 321 }
 322
 323 static int
 324 ahc_derp (void *cls, struct MHD_Connection *connection, const char *url, const char *method,
 325           const char *version, const char *upload_data, size_t *upload_data_size, void **ptr) {
 326         struct MHD_Response *response;
 327         int ret, len;
 328         struct url_info info;
 329         char *data;
 330
 331         if (strncmp(url, "/get", 4) == 0 && strlen(url) > 4) {
 332                 if (*ptr == NULL) {
 333                         if (strcmp(method, MHD_HTTP_METHOD_GET) != 0)
 334                                 return respond_405(connection);
 335
 336                         *ptr = (void *) 1;
 337                         return MHD_YES;
 338                 }
 339
 340                 if (url[4] != '/')
 341                         return respond_404(connection);
 342
 343                 ret = parse_url_info(url + 5, &info);
 344                 if ((ret & URL_INFO_NAME) == 0)
 345                         return respond_404(connection);
 346
 347                 if (!blerg_exists(info.name))
 348                         return respond_404(connection);
 349
 350                 *ptr == NULL;
 351
 352                 struct blerg *b = blerg_open(info.name);
 353
 354                 if ((ret & URL_INFO_RECORD) && (ret & URL_INFO_RECORD_TO)) {
 355                         response = create_response_for_range(b, info.record, info.record_to);
 356                 } else if (ret & URL_INFO_RECORD) {
 357                         ret = blerg_fetch(b, info.record, &data, &len);
 358                         blerg_close(b);
 359
 360                         if (ret == 0)
 361                                 return respond_404(connection);
 362                         response = MHD_create_response_from_data(len, data, MHD_YES, MHD_NO);
 363                 } else {
 364                         uint64_t record_count, from, to;
 365                         record_count = blerg_get_record_count(b);
 366                         if (record_count == 0) {
 367                                 blerg_close(b);
 368                                 response = MHD_create_response_from_data(2, "[]", MHD_NO, MHD_NO);
 369                         } else {
 370                                 to = record_count - 1;
 371                                 from = (record_count > 50 ? to - 49 : 0);
 372                                 response = create_response_for_range(b, from, to);
 373                         }
 374                 }
 375
 376                 if (response == NULL) {
 377                         blerg_close(b);
 378                         return respond_JSON_Failure(connection);
 379                 }
 380
 381                 ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
 382                 MHD_destroy_response(response);
 383                 return ret;
 384         } else if (strncmp(url, "/tag", 4) == 0 && strlen(url) > 4) {
 385                 if (*ptr == NULL) {
 386                         if (strcmp(method, MHD_HTTP_METHOD_GET) != 0)
 387                                 return respond_405(connection);
 388
 389                         *ptr = (void *) 1;
 390                         return MHD_YES;
 391                 }
 392
 393                 if (url[4] != '/')
 394                         return respond_404(connection);
 395
 396                 ret = parse_url_info(url + 5, &info);
 397                 if ((ret & URL_INFO_NAME) == 0)
 398                         return respond_404(connection);
 399
 400                 if (info.name[0] == 'H')
 401                         info.name[0] = '#';
 402                 if (!tag_exists(info.name))
 403                         return respond_404(connection);
 404
 405                 int recs = 50;
 406                 struct blergref *taglist = tag_list(info.name, 0, &recs, -1);
 407
 408                 if (recs == 0) {
 409                         response = MHD_create_response_from_data(2, "[]", MHD_NO, MHD_NO);
 410                 } else {
 411                         response = create_blergref_response(taglist, recs);
 412                 }
 413
 414                 if (response == NULL)
 415                         return respond_JSON_Failure(connection);
 416
 417                 ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
 418                 MHD_destroy_response(response);
 419
 420                 return ret;
 421         } else if (strncmp(url, "/put", 4) == 0) {
 422                 if (url[4] == '/')
 423                         return respond_404(connection);
 424
 425                 ret = process_and_check_put(connection, method, upload_data, upload_data_size, ptr);
 426                 if (ret == MHD_YES)
 427                         return MHD_YES;
 428
 429                 struct put_state *ps = (struct put_state *) *ptr;
 430
 431                 if (ps->data == NULL || ps->data_size == 0)
 432                         return respond_JSON_Failure(connection);
 433
 434                 struct blerg *b = blerg_open(ps->username);
 435                 if (b == NULL)
 436                         return respond_JSON_Failure(connection);
 437                 ret = blerg_store(b, ps->data, ps->data_size);
 438                 blerg_close(b);
 439                 if (ret == -1)
 440                         return respond_JSON_Failure(connection);
 441
 442                 MHD_destroy_post_processor(ps->pp);
 443                 free(ps->data);
 444                 free(ps);
 445                 *ptr = NULL;
 446
 447                 return respond_JSON_Success(connection);
 448         } else if (strncmp(url, "/info", 5) == 0) {
 449                 if (*ptr == NULL) {
 450                         *ptr = (void *) 1;
 451
 452                         if (strcmp(method, MHD_HTTP_METHOD_GET) != 0)
 453                                 return respond_405(connection);
 454                         return MHD_YES;
 455                 }
 456
 457
 458                 if (url[5] != '/')
 459                         return respond_404(connection);
 460
 461                 ret = parse_url_info(url + 6, &info);
 462                 if ((ret & URL_INFO_NAME) == 0)
 463                         return respond_404(connection);
 464
 465                 if (!blerg_exists(info.name))
 466                         return respond_404(connection);
 467
 468                 *ptr == NULL;
 469
 470                 struct blerg *b = blerg_open(info.name);
 471                 uint64_t record_count = blerg_get_record_count(b);
 472                 blerg_close(b);
 473
 474                 char number[21];
 475                 yajl_gen g = yajl_gen_alloc(&yajl_c, NULL);
 476                 yajl_gen_map_open(g);
 477                 yajl_gen_string(g, "record_count", 12);
 478                 snprintf(number, 21, "%llu", record_count);
 479                 yajl_gen_string(g, number, strlen(number));
 480                 yajl_gen_map_close(g);
 481
 482                 const unsigned char *ybuf;
 483                 yajl_gen_get_buf(g, &ybuf, &len);
 484
 485                 response = MHD_create_response_from_data(len, (void *)ybuf, MHD_NO, MHD_YES);
 486                 ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
 487                 MHD_destroy_response(response);
 488
 489                 yajl_gen_free(g);
 490
 491                 return ret;
 492         } else if (strncmp(url, "/create", 8) == 0) {
 493                 ret = process_auth(connection, method, upload_data, upload_data_size, ptr);
 494                 if (ret == MHD_YES)
 495                         return MHD_YES;
 496
 497                 struct auth_state *as = (struct auth_state *) *ptr;
 498
 499                 if (as->username[0] == 0 || as->password[0] == 0)
 500                         return respond_JSON_Failure(connection);
 501
 502                 if (blerg_exists(as->username))
 503                         return respond_JSON_Failure(connection);
 504
 505                 struct blerg *b = blerg_open(as->username);
 506                 blerg_close(b);
 507                 auth_set_password(as->username, as->password);
 508
 509                 MHD_destroy_post_processor(as->pp);
 510                 free(as);
 511                 *ptr = NULL;
 512
 513                 return respond_JSON_Success(connection);
 514         } else if (strncmp(url, "/login", 7) == 0) {
 515                 ret = process_auth(connection, method, upload_data, upload_data_size, ptr);
 516                 if (ret == MHD_YES)
 517                         return MHD_YES;
 518
 519                 struct auth_state *as = (struct auth_state *) *ptr;
 520
 521                 if (as->username[0] == 0 || as->password[0] == 0)
 522                         return respond_JSON_Failure(connection);
 523
 524                 char *token = auth_login(as->username, as->password);
 525                 if (token == NULL)
 526                         return respond_JSON_Failure(connection);
 527
 528                 response = MHD_create_response_from_data(strlen(JSON_SUCCESS), JSON_SUCCESS, MHD_NO, MHD_NO);
 529
 530                 data = malloc(512);
 531                 snprintf(data, 512, "auth=%s", token);
 532                 MHD_add_response_header(response, "Set-Cookie", data);
 533                 free(token);
 534                 free(data);
 535
 536                 MHD_destroy_post_processor(as->pp);
 537                 free(as);
 538                 *ptr = NULL;
 539
 540                 ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
 541                 MHD_destroy_response(response);
 542
 543                 return ret;
 544         } else if (strncmp(url, "/logout", 8) == 0) {
 545                 ret = process_and_check_auth(connection, method, upload_data, upload_data_size, ptr);
 546                 if (ret == MHD_YES)
 547                         return MHD_YES;
 548
 549                 struct auth_state *as = (struct auth_state *) *ptr;
 550
 551                 const char *given_token = MHD_lookup_connection_value(connection, MHD_COOKIE_KIND, "auth");
 552                 auth_logout(as->username, given_token);
 553                 return respond_JSON_Success(connection);
 554         } else if (strncmp(url, "/subscribe", 10) == 0 || strncmp(url, "/unsubscribe", 12) == 0) {
 555                 ret = process_and_check_auth(connection, method, upload_data, upload_data_size, ptr);
 556                 if (ret == MHD_YES)
 557                         return MHD_YES;
 558
 559                 struct auth_state *as = (struct auth_state *) *ptr;
 560
 561                 if (url[1] == 'u') {
 562                         if (url[12] != '/')
 563                                 return respond_404(connection);
 564
 565                         ret = parse_url_info(url + 13, &info);
 566                         if ((ret & URL_INFO_NAME) == 0)
 567                                 return respond_404(connection);
 568
 569                         subscription_remove(as->username, info.name);
 570                 } else {
 571                         if (url[10] != '/')
 572                                 return respond_404(connection);
 573
 574                         ret = parse_url_info(url + 11, &info);
 575                         if ((ret & URL_INFO_NAME) == 0)
 576                                 return respond_404(connection);
 577
 578                         subscription_add(as->username, info.name);
 579                 }
 580                 return respond_JSON_Success(connection);
 581         } else if (strncmp(url, "/feed", 6) == 0) {
 582                 ret = process_and_check_auth(connection, method, upload_data, upload_data_size, ptr);
 583                 if (ret == MHD_YES)
 584                         return MHD_YES;
 585
 586                 struct auth_state *as = (struct auth_state *) *ptr;
 587
 588                 int recs = 50;
 589                 struct blergref *feedlist = subscription_list(as->username, 0, &recs, -1);
 590
 591                 if (recs == 0) {
 592                         response = MHD_create_response_from_data(2, "[]", MHD_NO, MHD_NO);
 593                 } else {
 594                         response = create_blergref_response(feedlist, recs);
 595                 }
 596
 597                 if (response == NULL)
 598                         return respond_JSON_Failure(connection);
 599
 600                 ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
 601                 MHD_destroy_response(response);
 602
 603                 return ret;
 604         } else if (strncmp(url, "/feedinfo", 9) == 0) {
 605                 ret = process_and_check_auth(connection, method, upload_data, upload_data_size, ptr);
 606                 if (ret == MHD_YES)
 607                         return MHD_YES;
 608
 609                 struct auth_state *as = (struct auth_state *) *ptr;
 610
 611                 if (url[9] != '/')
 612                         return respond_404(connection);
 613
 614                 ret = parse_url_info(url + 10, &info);
 615                 if ((ret & URL_INFO_NAME) == 0)
 616                         return respond_404(connection);
 617
 618                 yajl_gen g = yajl_gen_alloc(&yajl_c, NULL);
 619                 yajl_gen_map_open(g);
 620                 yajl_gen_string(g, "subscribed", 10);
 621                 yajl_gen_bool(g, is_subscribed(as->username, info.name));
 622                 yajl_gen_map_close(g);
 623
 624                 const unsigned char *ybuf;
 625                 yajl_gen_get_buf(g, &ybuf, &len);
 626
 627                 response = MHD_create_response_from_data(len, (void *)ybuf, MHD_NO, MHD_YES);
 628                 ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
 629                 MHD_destroy_response(response);
 630
 631                 yajl_gen_free(g);
 632                 free(as);
 633
 634                 return ret;
 635         } else {
 636                 return respond_404(connection);
 637         }
 638 }
 639
 640
 641 int main(int argc, char *argv[]) {
 642         struct MHD_Daemon *daemon;
 643         fd_set rs, ws, es;
 644         int max;
 645
 646         init_responses();
 647
 648         daemon = MHD_start_daemon(MHD_USE_DEBUG, HTTP_BLERG_PORT, NULL, NULL, &ahc_derp, NULL, MHD_OPTION_END);
 649         if (daemon == NULL) {
 650                 fprintf(stderr, "Could not start web server\n");
 651                 return 1;
 652         }
 653
 654         while (1) {
 655                 FD_ZERO(&rs); FD_ZERO(&ws); FD_ZERO(&es);
 656                 if (MHD_get_fdset(daemon, &rs, &ws, &es, &max) != MHD_YES) {
 657                         fprintf(stderr, "Fatal error getting fd sets\n");
 658                         break;
 659                 }
 660                 select(max + 1, &rs, &ws, &es, NULL);
 661                 MHD_run(daemon);
 662         }
 663         MHD_stop_daemon(daemon);
 664         return 0;
 665 }