src/main-afb-daemon.c

   1 /*
   2  * Copyright (C) 2015-2018 "IoT.bzh"
   3  * Author "Fulup Ar Foll"
   4  * Author José Bollo <jose.bollo@iot.bzh>
   5  *
   6  * Licensed under the Apache License, Version 2.0 (the "License");
   7  * you may not use this file except in compliance with the License.
   8  * You may obtain a copy of the License at
   9  *
  10  *   http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing, software
  13  * distributed under the License is distributed on an "AS IS" BASIS,
  14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  * See the License for the specific language governing permissions and
  16  * limitations under the License.
  17  */
  18
  19 #define _GNU_SOURCE
  20
  21 #include <stdlib.h>
  22 #include <stdio.h>
  23 #include <stdint.h>
  24 #include <signal.h>
  25 #include <string.h>
  26 #include <unistd.h>
  27 #include <limits.h>
  28 #include <errno.h>
  29 #include <fcntl.h>
  30 #include <sys/stat.h>
  31 #include <sys/wait.h>
  32
  33 #if !defined(NO_CALL_PERSONALITY)
  34 #include <sys/personality.h>
  35 #endif
  36
  37 #include <json-c/json.h>
  38
  39 #include <systemd/sd-daemon.h>
  40
  41 #include "afb-config.h"
  42 #include "afb-hswitch.h"
  43 #include "afb-apiset.h"
  44 #include "afb-autoset.h"
  45 #include "afb-api-so.h"
  46 #if defined(WITH_DBUS_TRANSPARENCY)
  47 #   include "afb-api-dbus.h"
  48 #endif
  49 #include "afb-api-ws.h"
  50 #include "afb-hsrv.h"
  51 #include "afb-hreq.h"
  52 #include "afb-xreq.h"
  53 #include "afb-session.h"
  54 #include "verbose.h"
  55 #include "afb-common.h"
  56 #include "afb-export.h"
  57 #include "afb-monitor.h"
  58 #include "afb-hook.h"
  59 #include "afb-hook-flags.h"
  60 #include "afb-debug.h"
  61 #if defined(WITH_SUPERVISION)
  62 #   include "afb-supervision.h"
  63 #endif
  64
  65 #include "process-name.h"
  66 #include "wrap-json.h"
  67 #include "jobs.h"
  68 #include "sig-monitor.h"
  69
  70 /*
  71    if SELF_PGROUP == 0 the launched command is the group leader
  72    if SELF_PGROUP != 0 afb-daemon is the group leader
  73 */
  74 #define SELF_PGROUP 0
  75
  76 struct afb_apiset *main_apiset;
  77 struct json_object *main_config;
  78
  79 static pid_t childpid;
  80
  81 /**
  82  * Tiny helper around putenv: add the variable name=value
  83  *
  84  * @param name name of the variable to set
  85  * @param value value to set to the variable
  86  *
  87  * @return 0 in case of success or -1 in case of error (with errno set to ENOMEM)
  88  */
  89 static int addenv(const char *name, const char *value)
  90 {
  91         char *head, *middle;
  92
  93         head = malloc(2 + strlen(name) + strlen(value));
  94         if (head == NULL) {
  95                 errno = ENOMEM;
  96                 return -1;
  97         }
  98         middle = stpcpy(head, name);
  99         middle[0] = '=';
 100         strcpy(&middle[1], value);
 101         return putenv(head);
 102 }
 103
 104 /**
 105  * Tiny helper around addenv that export the real path
 106  *
 107  * @param name name of the variable to set
 108  * @param path the path value to export to the variable
 109  *
 110  * @return 0 in case of success or -1 in case of error (with errno set to ENOMEM)
 111  */
 112 static int addenv_realpath(const char *name, const char *path)
 113 {
 114         char buffer[PATH_MAX];
 115         char *p = realpath(path, buffer);
 116         return p ? addenv(name, p) : -1;
 117 }
 118
 119 /**
 120  * Tiny helper around addenv that export an integer
 121  *
 122  * @param name name of the variable to set
 123  * @param value the integer value to export
 124  *
 125  * @return 0 in case of success or -1 in case of error (with errno set to ENOMEM)
 126  */
 127 static int addenv_int(const char *name, int value)
 128 {
 129         char buffer[64];
 130         snprintf(buffer, sizeof buffer, "%d", value);
 131         return addenv(name, buffer);
 132 }
 133
 134 /*----------------------------------------------------------
 135  |   helpers for handling list of arguments
 136  +--------------------------------------------------------- */
 137
 138 static const char *run_for_config_array_opt(const char *name,
 139                                             int (*run) (void *closure, const char *value),
 140                                             void *closure)
 141 {
 142         int i, n, rc;
 143         struct json_object *array, *value;
 144
 145         if (json_object_object_get_ex(main_config, name, &array)) {
 146                 if (!json_object_is_type(array, json_type_array))
 147                         return json_object_get_string(array);
 148                 n = (int)json_object_array_length(array);
 149                 for (i = 0 ; i < n ; i++) {
 150                         value = json_object_array_get_idx(array, i);
 151                         rc = run(closure, json_object_get_string(value));
 152                         if (!rc)
 153                                 return json_object_get_string(value);
 154                 }
 155         }
 156         return NULL;
 157 }
 158
 159 static int run_start(void *closure, const char *value)
 160 {
 161         int (*starter) (const char *value, struct afb_apiset *declare_set, struct afb_apiset *call_set) = closure;
 162         return starter(value, main_apiset, main_apiset) >= 0;
 163 }
 164
 165 static void apiset_start_list(const char *name,
 166                         int (*starter) (const char *value, struct afb_apiset *declare_set, struct afb_apiset *call_set),
 167                         const char *message)
 168 {
 169         const char *item = run_for_config_array_opt(name, run_start, starter);
 170         if (item) {
 171                 ERROR("can't start %s %s", message, item);
 172                 exit(1);
 173         }
 174 }
 175
 176 /*----------------------------------------------------------
 177  | exit_handler
 178  |   Handles on exit specific actions
 179  +--------------------------------------------------------- */
 180 static void exit_handler()
 181 {
 182         struct sigaction siga;
 183
 184         memset(&siga, 0, sizeof siga);
 185         siga.sa_handler = SIG_IGN;
 186         sigaction(SIGTERM, &siga, NULL);
 187
 188         if (SELF_PGROUP)
 189                 killpg(0, SIGTERM);
 190         else if (childpid > 0)
 191                 killpg(childpid, SIGTERM);
 192 }
 193
 194 static void on_sigterm(int signum, siginfo_t *info, void *uctx)
 195 {
 196         NOTICE("Received SIGTERM");
 197         exit(0);
 198 }
 199
 200 static void on_sighup(int signum, siginfo_t *info, void *uctx)
 201 {
 202         NOTICE("Received SIGHUP");
 203         /* TODO */
 204 }
 205
 206 static void setup_daemon()
 207 {
 208         struct sigaction siga;
 209
 210         /* install signal handlers */
 211         memset(&siga, 0, sizeof siga);
 212         siga.sa_flags = SA_SIGINFO;
 213
 214         siga.sa_sigaction = on_sigterm;
 215         sigaction(SIGTERM, &siga, NULL);
 216
 217         siga.sa_sigaction = on_sighup;
 218         sigaction(SIGHUP, &siga, NULL);
 219
 220         /* handle groups */
 221         atexit(exit_handler);
 222
 223         /* ignore any SIGPIPE */
 224         signal(SIGPIPE, SIG_IGN);
 225 }
 226
 227 /*----------------------------------------------------------
 228  | daemonize
 229  |   set the process in background
 230  +--------------------------------------------------------- */
 231 static void daemonize()
 232 {
 233         int fd = 0, daemon, nostdin;
 234         const char *output;
 235         pid_t pid;
 236
 237         daemon = 0;
 238         output = NULL;
 239         wrap_json_unpack(main_config, "{s?b s?s}", "daemon", &daemon, "output", &output);
 240         nostdin = 0;
 241
 242         if (output) {
 243                 fd = open(output, O_WRONLY | O_APPEND | O_CREAT, 0640);
 244                 if (fd < 0) {
 245                         ERROR("Can't open output %s", output);
 246                         exit(1);
 247                 }
 248         }
 249
 250         if (daemon) {
 251                 INFO("entering background mode");
 252
 253                 pid = fork();
 254                 if (pid == -1) {
 255                         ERROR("Failed to fork daemon process");
 256                         exit(1);
 257                 }
 258                 if (pid != 0)
 259                         _exit(0);
 260
 261                 nostdin = 1;
 262         }
 263
 264         /* closes the input */
 265         if (output) {
 266                 NOTICE("Redirecting output to %s", output);
 267                 close(2);
 268                 dup(fd);
 269                 close(1);
 270                 dup(fd);
 271                 close(fd);
 272         }
 273
 274         if (nostdin)
 275                 close(0); /* except if 'daemon', ctrl+C still works after that */
 276 }
 277
 278 /*---------------------------------------------------------
 279  | http server
 280  |   Handles the HTTP server
 281  +--------------------------------------------------------- */
 282 static int init_alias(void *closure, const char *spec)
 283 {
 284         struct afb_hsrv *hsrv = closure;
 285         char *path = strchr(spec, ':');
 286
 287         if (path == NULL) {
 288                 ERROR("Missing ':' in alias %s. Alias ignored", spec);
 289                 return 1;
 290         }
 291         *path++ = 0;
 292         INFO("Alias for url=%s to path=%s", spec, path);
 293         return afb_hsrv_add_alias(hsrv, spec, afb_common_rootdir_get_fd(), path,
 294                                   0, 0);
 295 }
 296
 297 static int init_http_server(struct afb_hsrv *hsrv)
 298 {
 299         int rc;
 300         const char *rootapi, *roothttp, *rootbase;
 301
 302         roothttp = NULL;
 303         rc = wrap_json_unpack(main_config, "{ss ss s?s}",
 304                                 "rootapi", &rootapi,
 305                                 "rootbase", &rootbase,
 306                                 "roothttp", &roothttp);
 307         if (rc < 0) {
 308                 ERROR("Can't get HTTP server config");
 309                 exit(1);
 310         }
 311
 312         if (!afb_hsrv_add_handler(hsrv, rootapi,
 313                         afb_hswitch_websocket_switch, main_apiset, 20))
 314                 return 0;
 315
 316         if (!afb_hsrv_add_handler(hsrv, rootapi,
 317                         afb_hswitch_apis, main_apiset, 10))
 318                 return 0;
 319
 320         if (run_for_config_array_opt("alias", init_alias, hsrv))
 321                 return 0;
 322
 323         if (roothttp != NULL) {
 324                 if (!afb_hsrv_add_alias(hsrv, "",
 325                         afb_common_rootdir_get_fd(), roothttp, -10, 1))
 326                         return 0;
 327         }
 328
 329         if (!afb_hsrv_add_handler(hsrv, rootbase,
 330                         afb_hswitch_one_page_api_redirect, NULL, -20))
 331                 return 0;
 332
 333         return 1;
 334 }
 335
 336 static struct afb_hsrv *start_http_server()
 337 {
 338         int rc;
 339         const char *uploaddir, *rootdir;
 340         struct afb_hsrv *hsrv;
 341         int cache_timeout, http_port;
 342
 343         rc = wrap_json_unpack(main_config, "{ss ss si si}",
 344                                 "uploaddir", &uploaddir,
 345                                 "rootdir", &rootdir,
 346                                 "cache-eol", &cache_timeout,
 347                                 "port", &http_port);
 348         if (rc < 0) {
 349                 ERROR("Can't get HTTP server start config");
 350                 exit(1);
 351         }
 352
 353         if (afb_hreq_init_download_path(uploaddir)) {
 354                 ERROR("unable to set the upload directory %s", uploaddir);
 355                 return NULL;
 356         }
 357
 358         hsrv = afb_hsrv_create();
 359         if (hsrv == NULL) {
 360                 ERROR("memory allocation failure");
 361                 return NULL;
 362         }
 363
 364         if (!afb_hsrv_set_cache_timeout(hsrv, cache_timeout)
 365             || !init_http_server(hsrv)) {
 366                 ERROR("initialisation of httpd failed");
 367                 afb_hsrv_put(hsrv);
 368                 return NULL;
 369         }
 370
 371         NOTICE("Waiting port=%d rootdir=%s", http_port, rootdir);
 372         NOTICE("Browser URL= http://localhost:%d", http_port);
 373
 374         rc = afb_hsrv_start(hsrv, (uint16_t) http_port, 15);
 375         if (!rc) {
 376                 ERROR("starting of httpd failed");
 377                 afb_hsrv_put(hsrv);
 378                 return NULL;
 379         }
 380
 381         return hsrv;
 382 }
 383
 384 /*---------------------------------------------------------
 385  | execute_command
 386  +--------------------------------------------------------- */
 387
 388 static void on_sigchld(int signum, siginfo_t *info, void *uctx)
 389 {
 390         if (info->si_pid == childpid) {
 391                 switch (info->si_code) {
 392                 case CLD_EXITED:
 393                 case CLD_KILLED:
 394                 case CLD_DUMPED:
 395                         childpid = 0;
 396                         if (!SELF_PGROUP)
 397                                 killpg(info->si_pid, SIGKILL);
 398                         waitpid(info->si_pid, NULL, 0);
 399                         exit(0);
 400                 }
 401         }
 402 }
 403
 404 /*
 405 # @@ @
 406 # @p port
 407 # @t token
 408 */
 409
 410 #define SUBST_CHAR  '@'
 411 #define SUBST_STR   "@"
 412
 413 static char *instanciate_string(const char *arg, const char *port, const char *token)
 414 {
 415         char *resu, *it, *wr;
 416         int chg, dif;
 417
 418         /* get the changes */
 419         chg = 0;
 420         dif = 0;
 421         it = strchrnul(arg, SUBST_CHAR);
 422         while (*it) {
 423                 switch(*++it) {
 424                 case 'p': chg++; dif += (int)strlen(port) - 2; break;
 425                 case 't': chg++; dif += (int)strlen(token) - 2; break;
 426                 case SUBST_CHAR: it++; chg++; dif--; break;
 427                 default: break;
 428                 }
 429                 it = strchrnul(it, SUBST_CHAR);
 430         }
 431
 432         /* return arg when no change */
 433         if (!chg)
 434                 return strdup(arg);
 435
 436         /* allocates the result */
 437         resu = malloc((it - arg) + dif + 1);
 438         if (!resu) {
 439                 ERROR("out of memory");
 440                 return NULL;
 441         }
 442
 443         /* instanciate the arguments */
 444         wr = resu;
 445         for (;;) {
 446                 it = strchrnul(arg, SUBST_CHAR);
 447                 wr = mempcpy(wr, arg, it - arg);
 448                 if (!*it)
 449                         break;
 450                 switch(*++it) {
 451                 case 'p': wr = stpcpy(wr, port); break;
 452                 case 't': wr = stpcpy(wr, token); break;
 453                 default: *wr++ = SUBST_CHAR; /*@fallthrough@*/
 454                 case SUBST_CHAR: *wr++ = *it;
 455                 }
 456                 arg = ++it;
 457         }
 458
 459         *wr = 0;
 460         return resu;
 461 }
 462
 463 static int instanciate_environ(const char *port, const char *token)
 464 {
 465         extern char **environ;
 466         char *repl;
 467         int i;
 468
 469         /* instantiate the environment */
 470         for (i = 0 ; environ[i] ; i++) {
 471                 repl = instanciate_string(environ[i], port, token);
 472                 if (!repl)
 473                         return -1;
 474                 environ[i] = repl;
 475         }
 476         return 0;
 477 }
 478
 479 static char **instanciate_command_args(struct json_object *exec, const char *port, const char *token)
 480 {
 481         char **result;
 482         char *repl;
 483         int i, n;
 484
 485         /* allocates the result */
 486         n = (int)json_object_array_length(exec);
 487         result = malloc((n + 1) * sizeof * result);
 488         if (!result) {
 489                 ERROR("out of memory");
 490                 return NULL;
 491         }
 492
 493         /* instanciate the arguments */
 494         for (i = 0 ; i < n ; i++) {
 495                 repl = instanciate_string(json_object_get_string(json_object_array_get_idx(exec, i)), port, token);
 496                 if (!repl) {
 497                         while(i)
 498                                 free(result[--i]);
 499                         free(result);
 500                         return NULL;
 501                 }
 502                 result[i] = repl;
 503         }
 504         result[i] = NULL;
 505         return result;
 506 }
 507
 508 static int execute_command()
 509 {
 510         struct json_object *exec, *oport;
 511         struct sigaction siga;
 512         char port[20];
 513         const char *token;
 514         char **args;
 515         int rc;
 516
 517         /* check whether a command is to execute or not */
 518         if (!json_object_object_get_ex(main_config, "exec", &exec))
 519                 return 0;
 520
 521         if (SELF_PGROUP)
 522                 setpgid(0, 0);
 523
 524         /* install signal handler */
 525         memset(&siga, 0, sizeof siga);
 526         siga.sa_sigaction = on_sigchld;
 527         siga.sa_flags = SA_SIGINFO;
 528         sigaction(SIGCHLD, &siga, NULL);
 529
 530         /* fork now */
 531         childpid = fork();
 532         if (childpid)
 533                 return 0;
 534
 535         /* compute the string for port */
 536         if (json_object_object_get_ex(main_config, "port", &oport))
 537                 rc = snprintf(port, sizeof port, "%s", json_object_get_string(oport));
 538         else
 539                 rc = snprintf(port, sizeof port, "%cp", SUBST_CHAR);
 540         if (rc < 0 || rc >= (int)(sizeof port)) {
 541                 ERROR("port->txt failed");
 542         }
 543         else {
 544                 /* instantiate arguments and environment */
 545                 token = afb_session_initial_token();
 546                 args = instanciate_command_args(exec, port, token);
 547                 if (args && instanciate_environ(port, token) >= 0) {
 548                         /* run */
 549                         if (!SELF_PGROUP)
 550                                 setpgid(0, 0);
 551                         execv(args[0], args);
 552                         ERROR("can't launch %s: %m", args[0]);
 553                 }
 554         }
 555         exit(1);
 556         return -1;
 557 }
 558
 559 /*---------------------------------------------------------
 560  | startup calls
 561  +--------------------------------------------------------- */
 562
 563 struct startup_req
 564 {
 565         struct afb_xreq xreq;
 566         char *api;
 567         char *verb;
 568         struct json_object *calls;
 569         int index;
 570         int count;
 571         const char *callspec;
 572         struct afb_session *session;
 573 };
 574
 575 static void startup_call_reply(struct afb_xreq *xreq, struct json_object *object, const char *error, const char *info)
 576 {
 577         struct startup_req *sreq = CONTAINER_OF_XREQ(struct startup_req, xreq);
 578
 579         info = info ?: "";
 580         if (!error) {
 581                 NOTICE("startup call %s returned %s (%s)", sreq->callspec, json_object_get_string(object), info);
 582                 json_object_put(object);
 583         } else {
 584                 ERROR("startup call %s ERROR! %s (%s)", sreq->callspec, error, info);
 585                 exit(1);
 586         }
 587 }
 588
 589 static void startup_call_current(struct startup_req *sreq);
 590
 591 static void startup_call_unref(struct afb_xreq *xreq)
 592 {
 593         struct startup_req *sreq = CONTAINER_OF_XREQ(struct startup_req, xreq);
 594
 595         free(sreq->api);
 596         free(sreq->verb);
 597         json_object_put(sreq->xreq.json);
 598         if (++sreq->index < sreq->count)
 599                 startup_call_current(sreq);
 600         else {
 601                 afb_session_close(sreq->session);
 602                 afb_session_unref(sreq->session);
 603                 free(sreq);
 604         }
 605 }
 606
 607 static struct afb_xreq_query_itf startup_xreq_itf =
 608 {
 609         .reply = startup_call_reply,
 610         .unref = startup_call_unref
 611 };
 612
 613 static void startup_call_current(struct startup_req *sreq)
 614 {
 615         const char *api, *verb, *json;
 616         enum json_tokener_error jerr;
 617
 618         sreq->callspec = json_object_get_string(json_object_array_get_idx(sreq->calls, sreq->index)),
 619         api = sreq->callspec;
 620         verb = strchr(api, '/');
 621         if (verb) {
 622                 json = strchr(verb, ':');
 623                 if (json) {
 624                         afb_xreq_init(&sreq->xreq, &startup_xreq_itf);
 625                         afb_context_init(&sreq->xreq.context, sreq->session, NULL);
 626                         sreq->xreq.context.validated = 1;
 627                         sreq->api = strndup(api, verb - api);
 628                         sreq->verb = strndup(verb + 1, json - verb - 1);
 629                         sreq->xreq.request.called_api = sreq->api;
 630                         sreq->xreq.request.called_verb = sreq->verb;
 631                         sreq->xreq.json = json_tokener_parse_verbose(json + 1, &jerr);
 632                         if (sreq->api && sreq->verb && jerr == json_tokener_success) {
 633                                 afb_xreq_process(&sreq->xreq, main_apiset);
 634                                 return;
 635                         }
 636                 }
 637         }
 638         ERROR("Bad call specification %s", sreq->callspec);
 639         exit(1);
 640 }
 641
 642 static void run_startup_calls()
 643 {
 644         struct json_object *calls;
 645         struct startup_req *sreq;
 646         int count;
 647
 648         if (json_object_object_get_ex(main_config, "call", &calls)
 649          && json_object_is_type(calls, json_type_array)
 650          && (count = (int)json_object_array_length(calls))) {
 651                 sreq = calloc(1, sizeof *sreq);
 652                 sreq->session = afb_session_create(3600);
 653                 sreq->calls = calls;
 654                 sreq->index = 0;
 655                 sreq->count = count;
 656                 startup_call_current(sreq);
 657         }
 658 }
 659
 660 /*---------------------------------------------------------
 661  | job for starting the daemon
 662  +--------------------------------------------------------- */
 663
 664 static void start(int signum, void *arg)
 665 {
 666         const char *tracereq, *traceapi, *traceevt, *traceses, *tracesvc, *traceditf, *traceglob;
 667         const char *workdir, *rootdir, *token, *rootapi;
 668         struct json_object *settings;
 669         struct afb_hsrv *hsrv;
 670         int max_session_count, session_timeout, api_timeout;
 671         int no_httpd, http_port;
 672         int rc;
 673
 674
 675         afb_debug("start-entry");
 676
 677         if (signum) {
 678                 ERROR("start aborted: received signal %s", strsignal(signum));
 679                 exit(1);
 680         }
 681
 682         settings = NULL;
 683         token = rootapi = tracesvc = traceditf = tracereq =
 684                 traceapi = traceevt = traceses = traceglob = NULL;
 685         no_httpd = 0;
 686         http_port = -1;
 687         rc = wrap_json_unpack(main_config, "{"
 688                         "ss ss s?s"
 689                         "si si si"
 690                         "s?b s?i s?s"
 691                         "s?o"
 692 #if !defined(REMOVE_LEGACY_TRACE)
 693                         "s?s s?s"
 694 #endif
 695                         "s?s s?s s?s s?s s?s"
 696                         "}",
 697
 698                         "rootdir", &rootdir,
 699                         "workdir", &workdir,
 700                         "token", &token,
 701
 702                         "apitimeout", &api_timeout,
 703                         "cntxtimeout", &session_timeout,
 704                         "session-max", &max_session_count,
 705
 706                         "no-httpd", &no_httpd,
 707                         "port", &http_port,
 708                         "rootapi", &rootapi,
 709
 710                         "set", &settings,
 711 #if !defined(REMOVE_LEGACY_TRACE)
 712                         "tracesvc", &tracesvc,
 713                         "traceditf", &traceditf,
 714 #endif
 715                         "tracereq", &tracereq,
 716                         "traceapi", &traceapi,
 717                         "traceevt", &traceevt,
 718                         "traceses",  &traceses,
 719                         "traceglob", &traceglob
 720                         );
 721         if (rc < 0) {
 722                 ERROR("Unable to get start config");
 723                 exit(1);
 724         }
 725
 726         /* initialize session handling */
 727         if (afb_session_init(max_session_count, session_timeout, token)) {
 728                 ERROR("initialisation of session manager failed");
 729                 goto error;
 730         }
 731
 732         /* set the directories */
 733         mkdir(workdir, S_IRWXU | S_IRGRP | S_IXGRP);
 734         if (chdir(workdir) < 0) {
 735                 ERROR("Can't enter working dir %s", workdir);
 736                 goto error;
 737         }
 738         if (afb_common_rootdir_set(rootdir) < 0) {
 739                 ERROR("failed to set common root directory %s", rootdir);
 740                 goto error;
 741         }
 742         if (addenv_realpath("AFB_WORKDIR", "."     /* resolved by realpath */)
 743          || addenv_realpath("AFB_ROOTDIR", rootdir /* relative to current directory */)) {
 744                 ERROR("can't set DIR environment");
 745                 goto error;
 746         }
 747
 748         /* setup HTTP */
 749         if (!no_httpd) {
 750                 if (http_port < 0) {
 751                         ERROR("no port is defined");
 752                         goto error;
 753                 }
 754                 if (http_port == 0) {
 755                         ERROR("random port is not implemented");
 756                         goto error;
 757                 }
 758                 if (addenv_int("AFB_PORT", http_port)
 759                  || addenv("AFB_TOKEN", afb_session_initial_token())) {
 760                         ERROR("can't set HTTP environment");
 761                         goto error;
 762                 }
 763         }
 764
 765         /* configure the daemon */
 766         afb_export_set_config(settings);
 767         main_apiset = afb_apiset_create("main", api_timeout);
 768         if (!main_apiset) {
 769                 ERROR("can't create main api set");
 770                 goto error;
 771         }
 772         if (afb_monitor_init(main_apiset, main_apiset) < 0) {
 773                 ERROR("failed to setup monitor");
 774                 goto error;
 775         }
 776 #if defined(WITH_SUPERVISION)
 777         if (afb_supervision_init(main_apiset, main_config) < 0) {
 778                 ERROR("failed to setup supervision");
 779                 goto error;
 780         }
 781 #endif
 782
 783         /* install hooks */
 784         if (tracereq)
 785                 afb_hook_create_xreq(NULL, NULL, NULL, afb_hook_flags_xreq_from_text(tracereq), NULL, NULL);
 786 #if !defined(REMOVE_LEGACY_TRACE)
 787         if (traceapi || tracesvc || traceditf)
 788                 afb_hook_create_api(NULL, afb_hook_flags_api_from_text(traceapi)
 789                         | afb_hook_flags_legacy_ditf_from_text(traceditf)
 790                         | afb_hook_flags_legacy_svc_from_text(tracesvc), NULL, NULL);
 791 #else
 792         if (traceapi)
 793                 afb_hook_create_api(NULL, afb_hook_flags_api_from_text(traceapi), NULL, NULL);
 794 #endif
 795         if (traceevt)
 796                 afb_hook_create_evt(NULL, afb_hook_flags_evt_from_text(traceevt), NULL, NULL);
 797         if (traceses)
 798                 afb_hook_create_session(NULL, afb_hook_flags_session_from_text(traceses), NULL, NULL);
 799         if (traceglob)
 800                 afb_hook_create_global(afb_hook_flags_global_from_text(traceglob), NULL, NULL);
 801
 802         /* load bindings and apis */
 803         afb_debug("start-load");
 804         apiset_start_list("binding", afb_api_so_add_binding, "the binding");
 805         apiset_start_list("ldpaths", afb_api_so_add_pathset_fails, "the binding path set");
 806         apiset_start_list("weak-ldpaths", afb_api_so_add_pathset_nofails, "the weak binding path set");
 807         apiset_start_list("auto-api", afb_autoset_add_any, "the automatic api path set");
 808 #if defined(WITH_DBUS_TRANSPARENCY)
 809         apiset_start_list("dbus-client", afb_api_dbus_add_client, "the afb-dbus client");
 810 #endif
 811         apiset_start_list("ws-client", afb_api_ws_add_client_weak, "the afb-websocket client");
 812
 813         DEBUG("Init config done");
 814
 815         /* start the services */
 816         afb_debug("start-start");
 817 #if !defined(NO_CALL_PERSONALITY)
 818         personality((unsigned long)-1L);
 819 #endif
 820         if (afb_apiset_start_all_services(main_apiset) < 0)
 821                 goto error;
 822
 823         /* export started apis */
 824         apiset_start_list("ws-server", afb_api_ws_add_server, "the afb-websocket service");
 825 #if defined(WITH_DBUS_TRANSPARENCY)
 826         apiset_start_list("dbus-server", afb_api_dbus_add_server, "the afb-dbus service");
 827 #endif
 828
 829         /* start the HTTP server */
 830         afb_debug("start-http");
 831         if (!no_httpd) {
 832                 if (!afb_hreq_init_cookie(http_port, rootapi, session_timeout)) {
 833                         ERROR("initialisation of HTTP cookies failed");
 834                         goto error;
 835                 }
 836
 837                 hsrv = start_http_server();
 838                 if (hsrv == NULL)
 839                         goto error;
 840         }
 841
 842         /* run the startup calls */
 843         afb_debug("start-call");
 844         run_startup_calls();
 845
 846         /* run the command */
 847         afb_debug("start-exec");
 848         if (execute_command() < 0)
 849                 goto error;
 850
 851         /* ready */
 852         sd_notify(1, "READY=1");
 853         return;
 854 error:
 855         exit(1);
 856 }
 857
 858 /*---------------------------------------------------------
 859  | main
 860  |   Parse option and launch action
 861  +--------------------------------------------------------- */
 862
 863 int main(int argc, char *argv[])
 864 {
 865         struct json_object *obj;
 866         afb_debug("main-entry");
 867
 868         // ------------- Build session handler & init config -------
 869         main_config = afb_config_parse_arguments(argc, argv);
 870         if (sig_monitor_init(
 871                 !json_object_object_get_ex(main_config, "trap-faults", &obj)
 872                         || json_object_get_boolean(obj)) < 0) {
 873                 ERROR("failed to initialise signal handlers");
 874                 return 1;
 875         }
 876
 877
 878         if (json_object_object_get_ex(main_config, "name", &obj)) {
 879                 verbose_set_name(json_object_get_string(obj), 0);
 880                 process_name_set_name(json_object_get_string(obj));
 881                 process_name_replace_cmdline(argv, json_object_get_string(obj));
 882         }
 883         afb_debug("main-args");
 884
 885         // --------- run -----------
 886         daemonize();
 887         INFO("running with pid %d", getpid());
 888
 889         /* set the daemon environment */
 890         setup_daemon();
 891
 892         afb_debug("main-start");
 893
 894         /* enter job processing */
 895         jobs_start(3, 0, 50, start, NULL);
 896         WARNING("hoops returned from jobs_enter! [report bug]");
 897         return 1;
 898 }
 899