src/main-afb-daemon.c

   1 /*
   2  * Copyright (C) 2015-2019 "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 #if WITH_SYSTEMD
  40 #   include <systemd/sd-daemon.h>
  41 #endif
  42
  43 #include "afb-args.h"
  44 #include "afb-apiset.h"
  45 #include "afb-autoset.h"
  46 #include "afb-api-so.h"
  47 #if WITH_DBUS_TRANSPARENCY
  48 #   include "afb-api-dbus.h"
  49 #endif
  50 #include "afb-api-ws.h"
  51 #include "afb-xreq.h"
  52 #include "afb-session.h"
  53 #include "verbose.h"
  54 #include "afb-common.h"
  55 #include "afb-export.h"
  56 #include "afb-monitor.h"
  57 #if WITH_AFB_HOOK
  58 #include "afb-hook.h"
  59 #include "afb-hook-flags.h"
  60 #endif
  61 #include "afb-debug.h"
  62 #if WITH_SUPERVISION
  63 #   include "afb-supervision.h"
  64 #endif
  65 #if WITH_LIBMICROHTTPD
  66 #   include "afb-hsrv.h"
  67 #   include "afb-hreq.h"
  68 #   include "afb-hswitch.h"
  69 #endif
  70
  71 #include "process-name.h"
  72 #include "wrap-json.h"
  73 #include "jobs.h"
  74 #include "sig-monitor.h"
  75 #include "watchdog.h"
  76
  77 #if !defined(DEFAULT_BINDER_INTERFACE)
  78 #  define DEFAULT_BINDER_INTERFACE NULL
  79 #endif
  80
  81 /*
  82    if SELF_PGROUP == 0 the launched command is the group leader
  83    if SELF_PGROUP != 0 afb-daemon is the group leader
  84 */
  85 #define SELF_PGROUP 0
  86
  87 struct afb_apiset *main_apiset;
  88 struct json_object *main_config;
  89
  90 static pid_t childpid;
  91
  92 /**
  93  * Tiny helper around putenv: add the variable name=value
  94  *
  95  * @param name name of the variable to set
  96  * @param value value to set to the variable
  97  *
  98  * @return 0 in case of success or -1 in case of error (with errno set to ENOMEM)
  99  */
 100 static int addenv(const char *name, const char *value)
 101 {
 102         char *head, *middle;
 103
 104         head = malloc(2 + strlen(name) + strlen(value));
 105         if (head == NULL) {
 106                 errno = ENOMEM;
 107                 return -1;
 108         }
 109         middle = stpcpy(head, name);
 110         middle[0] = '=';
 111         strcpy(&middle[1], value);
 112         return putenv(head);
 113 }
 114
 115 /**
 116  * Tiny helper around addenv that export the real path
 117  *
 118  * @param name name of the variable to set
 119  * @param path the path value to export to the variable
 120  *
 121  * @return 0 in case of success or -1 in case of error (with errno set to ENOMEM)
 122  */
 123 static int addenv_realpath(const char *name, const char *path)
 124 {
 125         char buffer[PATH_MAX];
 126         char *p = realpath(path, buffer);
 127         return p ? addenv(name, p) : -1;
 128 }
 129
 130 /**
 131  * Tiny helper around addenv that export an integer
 132  *
 133  * @param name name of the variable to set
 134  * @param value the integer value to export
 135  *
 136  * @return 0 in case of success or -1 in case of error (with errno set to ENOMEM)
 137  */
 138 static int addenv_int(const char *name, int value)
 139 {
 140         char buffer[64];
 141         snprintf(buffer, sizeof buffer, "%d", value);
 142         return addenv(name, buffer);
 143 }
 144
 145 /*----------------------------------------------------------
 146  |   helpers for handling list of arguments
 147  +--------------------------------------------------------- */
 148
 149 static const char *run_for_config_array_opt(const char *name,
 150                                             int (*run) (void *closure, const char *value),
 151                                             void *closure)
 152 {
 153         int i, n, rc;
 154         struct json_object *array, *value;
 155
 156         if (json_object_object_get_ex(main_config, name, &array)) {
 157                 if (!json_object_is_type(array, json_type_array))
 158                         return json_object_get_string(array);
 159                 n = (int)json_object_array_length(array);
 160                 for (i = 0 ; i < n ; i++) {
 161                         value = json_object_array_get_idx(array, i);
 162                         rc = run(closure, json_object_get_string(value));
 163                         if (!rc)
 164                                 return json_object_get_string(value);
 165                 }
 166         }
 167         return NULL;
 168 }
 169
 170 static int run_start(void *closure, const char *value)
 171 {
 172         int (*starter) (const char *value, struct afb_apiset *declare_set, struct afb_apiset *call_set) = closure;
 173         return starter(value, main_apiset, main_apiset) >= 0;
 174 }
 175
 176 static void apiset_start_list(const char *name,
 177                         int (*starter) (const char *value, struct afb_apiset *declare_set, struct afb_apiset *call_set),
 178                         const char *message)
 179 {
 180         const char *item = run_for_config_array_opt(name, run_start, starter);
 181         if (item) {
 182                 ERROR("can't start %s %s", message, item);
 183                 exit(1);
 184         }
 185 }
 186
 187 /*----------------------------------------------------------
 188  | exit_handler
 189  |   Handles on exit specific actions
 190  +--------------------------------------------------------- */
 191 static void exit_handler()
 192 {
 193         struct sigaction siga;
 194
 195         memset(&siga, 0, sizeof siga);
 196         siga.sa_handler = SIG_IGN;
 197         sigaction(SIGTERM, &siga, NULL);
 198
 199         if (SELF_PGROUP)
 200                 killpg(0, SIGTERM);
 201         else if (childpid > 0)
 202                 killpg(childpid, SIGTERM);
 203 }
 204
 205 static void on_sigterm(int signum, siginfo_t *info, void *uctx)
 206 {
 207         NOTICE("Received SIGTERM");
 208         exit(0);
 209 }
 210
 211 static void on_sighup(int signum, siginfo_t *info, void *uctx)
 212 {
 213         NOTICE("Received SIGHUP");
 214         /* TODO */
 215 }
 216
 217 static void setup_daemon()
 218 {
 219         struct sigaction siga;
 220
 221         /* install signal handlers */
 222         memset(&siga, 0, sizeof siga);
 223         siga.sa_flags = SA_SIGINFO;
 224
 225         siga.sa_sigaction = on_sigterm;
 226         sigaction(SIGTERM, &siga, NULL);
 227
 228         siga.sa_sigaction = on_sighup;
 229         sigaction(SIGHUP, &siga, NULL);
 230
 231         /* handle groups */
 232         atexit(exit_handler);
 233
 234         /* ignore any SIGPIPE */
 235         signal(SIGPIPE, SIG_IGN);
 236 }
 237
 238 /*----------------------------------------------------------
 239  | daemonize
 240  |   set the process in background
 241  +--------------------------------------------------------- */
 242 static void daemonize()
 243 {
 244         int fd = 0, daemon, nostdin;
 245         const char *output;
 246         pid_t pid;
 247
 248         daemon = 0;
 249         output = NULL;
 250         wrap_json_unpack(main_config, "{s?b s?s}", "daemon", &daemon, "output", &output);
 251         nostdin = 0;
 252
 253         if (output) {
 254                 fd = open(output, O_WRONLY | O_APPEND | O_CREAT, 0640);
 255                 if (fd < 0) {
 256                         ERROR("Can't open output %s", output);
 257                         exit(1);
 258                 }
 259         }
 260
 261         if (daemon) {
 262                 INFO("entering background mode");
 263
 264                 pid = fork();
 265                 if (pid == -1) {
 266                         ERROR("Failed to fork daemon process");
 267                         exit(1);
 268                 }
 269                 if (pid != 0)
 270                         _exit(0);
 271
 272                 nostdin = 1;
 273         }
 274
 275         /* closes the input */
 276         if (output) {
 277                 NOTICE("Redirecting output to %s", output);
 278                 close(2);
 279                 dup(fd);
 280                 close(1);
 281                 dup(fd);
 282                 close(fd);
 283         }
 284
 285         if (nostdin)
 286                 close(0); /* except if 'daemon', ctrl+C still works after that */
 287 }
 288
 289 /*---------------------------------------------------------
 290  | http server
 291  |   Handles the HTTP server
 292  +--------------------------------------------------------- */
 293 #if WITH_LIBMICROHTTPD
 294 static int init_alias(void *closure, const char *spec)
 295 {
 296         struct afb_hsrv *hsrv = closure;
 297         char *path = strchr(spec, ':');
 298
 299         if (path == NULL) {
 300                 ERROR("Missing ':' in alias %s. Alias ignored", spec);
 301                 return 1;
 302         }
 303         *path++ = 0;
 304         INFO("Alias for url=%s to path=%s", spec, path);
 305         return afb_hsrv_add_alias(hsrv, spec, afb_common_rootdir_get_fd(), path,
 306                                   0, 0);
 307 }
 308
 309 static int init_http_server(struct afb_hsrv *hsrv)
 310 {
 311         int rc;
 312         const char *rootapi, *roothttp, *rootbase;
 313
 314         roothttp = NULL;
 315         rc = wrap_json_unpack(main_config, "{ss ss s?s}",
 316                                 "rootapi", &rootapi,
 317                                 "rootbase", &rootbase,
 318                                 "roothttp", &roothttp);
 319         if (rc < 0) {
 320                 ERROR("Can't get HTTP server config");
 321                 exit(1);
 322         }
 323
 324         if (!afb_hsrv_add_handler(hsrv, rootapi,
 325                         afb_hswitch_websocket_switch, main_apiset, 20))
 326                 return 0;
 327
 328         if (!afb_hsrv_add_handler(hsrv, rootapi,
 329                         afb_hswitch_apis, main_apiset, 10))
 330                 return 0;
 331
 332         if (run_for_config_array_opt("alias", init_alias, hsrv))
 333                 return 0;
 334
 335         if (roothttp != NULL) {
 336                 if (!afb_hsrv_add_alias(hsrv, "",
 337                         afb_common_rootdir_get_fd(), roothttp, -10, 1))
 338                         return 0;
 339         }
 340
 341         if (!afb_hsrv_add_handler(hsrv, rootbase,
 342                         afb_hswitch_one_page_api_redirect, NULL, -20))
 343                 return 0;
 344
 345         return 1;
 346 }
 347
 348 static struct afb_hsrv *start_http_server()
 349 {
 350         int rc;
 351         const char *uploaddir, *rootdir;
 352         struct afb_hsrv *hsrv;
 353         int cache_timeout, http_port;
 354
 355         rc = wrap_json_unpack(main_config, "{ss ss si si}",
 356                                 "uploaddir", &uploaddir,
 357                                 "rootdir", &rootdir,
 358                                 "cache-eol", &cache_timeout,
 359                                 "port", &http_port);
 360         if (rc < 0) {
 361                 ERROR("Can't get HTTP server start config");
 362                 exit(1);
 363         }
 364
 365         if (afb_hreq_init_download_path(uploaddir)) {
 366                 ERROR("unable to set the upload directory %s", uploaddir);
 367                 return NULL;
 368         }
 369
 370         hsrv = afb_hsrv_create();
 371         if (hsrv == NULL) {
 372                 ERROR("memory allocation failure");
 373                 return NULL;
 374         }
 375
 376         if (!afb_hsrv_set_cache_timeout(hsrv, cache_timeout)
 377             || !init_http_server(hsrv)) {
 378                 ERROR("initialisation of httpd failed");
 379                 afb_hsrv_put(hsrv);
 380                 return NULL;
 381         }
 382
 383         NOTICE("Waiting port=%d rootdir=%s", http_port, rootdir);
 384         NOTICE("Browser URL= http://localhost:%d", http_port);
 385
 386         rc = afb_hsrv_start(hsrv, 15);
 387         if (!rc) {
 388                 ERROR("starting of httpd failed");
 389                 afb_hsrv_put(hsrv);
 390                 return NULL;
 391         }
 392
 393         rc = afb_hsrv_add_interface_tcp(hsrv, DEFAULT_BINDER_INTERFACE, (uint16_t) http_port);
 394         if (!rc) {
 395                 ERROR("setting interface failed");
 396                 afb_hsrv_put(hsrv);
 397                 return NULL;
 398         }
 399
 400         return hsrv;
 401 }
 402 #endif
 403
 404 /*---------------------------------------------------------
 405  | execute_command
 406  +--------------------------------------------------------- */
 407
 408 static void wait_child_and_exit()
 409 {
 410         pid_t pidchld = childpid;
 411
 412         childpid = 0;
 413         if (!SELF_PGROUP)
 414                 killpg(pidchld, SIGKILL);
 415         waitpid(pidchld, NULL, 0);
 416         exit(0);
 417 }
 418
 419 static void on_sigchld(int signum, siginfo_t *info, void *uctx)
 420 {
 421         if (info->si_pid == childpid) {
 422                 switch (info->si_code) {
 423                 case CLD_EXITED:
 424                 case CLD_KILLED:
 425                 case CLD_DUMPED:
 426                         jobs_exit(wait_child_and_exit);
 427                 default:
 428                         break;
 429                 }
 430         }
 431 }
 432
 433 /*
 434 # @@ @
 435 # @p port
 436 # @t token
 437 */
 438
 439 #define SUBST_CHAR  '@'
 440 #define SUBST_STR   "@"
 441
 442 static char *instanciate_string(const char *arg, const char *port, const char *token)
 443 {
 444         char *resu, *it, *wr;
 445         int chg, dif;
 446
 447         /* get the changes */
 448         chg = 0;
 449         dif = 0;
 450         it = strchrnul(arg, SUBST_CHAR);
 451         while (*it) {
 452                 switch(*++it) {
 453                 case 'p': chg++; dif += (int)strlen(port) - 2; break;
 454                 case 't': chg++; dif += (int)strlen(token) - 2; break;
 455                 case SUBST_CHAR: it++; chg++; dif--; break;
 456                 default: break;
 457                 }
 458                 it = strchrnul(it, SUBST_CHAR);
 459         }
 460
 461         /* return arg when no change */
 462         if (!chg)
 463                 return strdup(arg);
 464
 465         /* allocates the result */
 466         resu = malloc((it - arg) + dif + 1);
 467         if (!resu) {
 468                 ERROR("out of memory");
 469                 return NULL;
 470         }
 471
 472         /* instanciate the arguments */
 473         wr = resu;
 474         for (;;) {
 475                 it = strchrnul(arg, SUBST_CHAR);
 476                 wr = mempcpy(wr, arg, it - arg);
 477                 if (!*it)
 478                         break;
 479                 switch(*++it) {
 480                 case 'p': wr = stpcpy(wr, port); break;
 481                 case 't': wr = stpcpy(wr, token); break;
 482                 default: *wr++ = SUBST_CHAR; /*@fallthrough@*/
 483                 case SUBST_CHAR: *wr++ = *it;
 484                 }
 485                 arg = ++it;
 486         }
 487
 488         *wr = 0;
 489         return resu;
 490 }
 491
 492 static int instanciate_environ(const char *port, const char *token)
 493 {
 494         extern char **environ;
 495         char *repl;
 496         int i;
 497
 498         /* instantiate the environment */
 499         for (i = 0 ; environ[i] ; i++) {
 500                 repl = instanciate_string(environ[i], port, token);
 501                 if (!repl)
 502                         return -1;
 503                 environ[i] = repl;
 504         }
 505         return 0;
 506 }
 507
 508 static char **instanciate_command_args(struct json_object *exec, const char *port, const char *token)
 509 {
 510         char **result;
 511         char *repl;
 512         int i, n;
 513
 514         /* allocates the result */
 515         n = (int)json_object_array_length(exec);
 516         result = malloc((n + 1) * sizeof * result);
 517         if (!result) {
 518                 ERROR("out of memory");
 519                 return NULL;
 520         }
 521
 522         /* instanciate the arguments */
 523         for (i = 0 ; i < n ; i++) {
 524                 repl = instanciate_string(json_object_get_string(json_object_array_get_idx(exec, i)), port, token);
 525                 if (!repl) {
 526                         while(i)
 527                                 free(result[--i]);
 528                         free(result);
 529                         return NULL;
 530                 }
 531                 result[i] = repl;
 532         }
 533         result[i] = NULL;
 534         return result;
 535 }
 536
 537 static int execute_command()
 538 {
 539         struct json_object *exec, *oport;
 540         struct sigaction siga;
 541         char port[20];
 542         const char *token;
 543         char **args;
 544         int rc;
 545
 546         /* check whether a command is to execute or not */
 547         if (!json_object_object_get_ex(main_config, "exec", &exec))
 548                 return 0;
 549
 550         if (SELF_PGROUP)
 551                 setpgid(0, 0);
 552
 553         /* install signal handler */
 554         memset(&siga, 0, sizeof siga);
 555         siga.sa_sigaction = on_sigchld;
 556         siga.sa_flags = SA_SIGINFO;
 557         sigaction(SIGCHLD, &siga, NULL);
 558
 559         /* fork now */
 560         childpid = fork();
 561         if (childpid)
 562                 return 0;
 563
 564         /* compute the string for port */
 565         if (json_object_object_get_ex(main_config, "port", &oport))
 566                 rc = snprintf(port, sizeof port, "%s", json_object_get_string(oport));
 567         else
 568                 rc = snprintf(port, sizeof port, "%cp", SUBST_CHAR);
 569         if (rc < 0 || rc >= (int)(sizeof port)) {
 570                 ERROR("port->txt failed");
 571         }
 572         else {
 573                 /* instantiate arguments and environment */
 574                 token = afb_session_initial_token();
 575                 args = instanciate_command_args(exec, port, token);
 576                 if (args && instanciate_environ(port, token) >= 0) {
 577                         /* run */
 578                         if (!SELF_PGROUP)
 579                                 setpgid(0, 0);
 580                         execv(args[0], args);
 581                         ERROR("can't launch %s: %m", args[0]);
 582                 }
 583         }
 584         exit(1);
 585         return -1;
 586 }
 587
 588 /*---------------------------------------------------------
 589  | startup calls
 590  +--------------------------------------------------------- */
 591
 592 struct startup_req
 593 {
 594         struct afb_xreq xreq;
 595         char *api;
 596         char *verb;
 597         struct json_object *calls;
 598         int index;
 599         int count;
 600         const char *callspec;
 601         struct afb_session *session;
 602 };
 603
 604 static void startup_call_reply(struct afb_xreq *xreq, struct json_object *object, const char *error, const char *info)
 605 {
 606         struct startup_req *sreq = CONTAINER_OF_XREQ(struct startup_req, xreq);
 607
 608         info = info ?: "";
 609         if (!error) {
 610                 NOTICE("startup call %s returned %s (%s)", sreq->callspec, json_object_get_string(object), info);
 611                 json_object_put(object);
 612         } else {
 613                 ERROR("startup call %s ERROR! %s (%s)", sreq->callspec, error, info);
 614                 exit(1);
 615         }
 616 }
 617
 618 static void startup_call_current(struct startup_req *sreq);
 619
 620 static void startup_call_unref(struct afb_xreq *xreq)
 621 {
 622         struct startup_req *sreq = CONTAINER_OF_XREQ(struct startup_req, xreq);
 623
 624         free(sreq->api);
 625         free(sreq->verb);
 626         json_object_put(sreq->xreq.json);
 627         if (++sreq->index < sreq->count)
 628                 startup_call_current(sreq);
 629         else {
 630                 afb_session_close(sreq->session);
 631                 afb_session_unref(sreq->session);
 632                 free(sreq);
 633         }
 634 }
 635
 636 static struct afb_xreq_query_itf startup_xreq_itf =
 637 {
 638         .reply = startup_call_reply,
 639         .unref = startup_call_unref
 640 };
 641
 642 static void startup_call_current(struct startup_req *sreq)
 643 {
 644         const char *api, *verb, *json;
 645         enum json_tokener_error jerr;
 646
 647         sreq->callspec = json_object_get_string(json_object_array_get_idx(sreq->calls, sreq->index)),
 648         api = sreq->callspec;
 649         verb = strchr(api, '/');
 650         if (verb) {
 651                 json = strchr(verb, ':');
 652                 if (json) {
 653                         afb_xreq_init(&sreq->xreq, &startup_xreq_itf);
 654                         afb_context_init(&sreq->xreq.context, sreq->session, NULL);
 655                         sreq->xreq.context.validated = 1;
 656                         sreq->api = strndup(api, verb - api);
 657                         sreq->verb = strndup(verb + 1, json - verb - 1);
 658                         sreq->xreq.request.called_api = sreq->api;
 659                         sreq->xreq.request.called_verb = sreq->verb;
 660                         sreq->xreq.json = json_tokener_parse_verbose(json + 1, &jerr);
 661                         if (sreq->api && sreq->verb && jerr == json_tokener_success) {
 662                                 afb_xreq_process(&sreq->xreq, main_apiset);
 663                                 return;
 664                         }
 665                 }
 666         }
 667         ERROR("Bad call specification %s", sreq->callspec);
 668         exit(1);
 669 }
 670
 671 static void run_startup_calls()
 672 {
 673         struct json_object *calls;
 674         struct startup_req *sreq;
 675         int count;
 676
 677         if (json_object_object_get_ex(main_config, "call", &calls)
 678          && json_object_is_type(calls, json_type_array)
 679          && (count = (int)json_object_array_length(calls))) {
 680                 sreq = calloc(1, sizeof *sreq);
 681                 sreq->session = afb_session_create(3600);
 682                 sreq->calls = calls;
 683                 sreq->index = 0;
 684                 sreq->count = count;
 685                 startup_call_current(sreq);
 686         }
 687 }
 688
 689 /*---------------------------------------------------------
 690  | job for starting the daemon
 691  +--------------------------------------------------------- */
 692
 693 static void start(int signum, void *arg)
 694 {
 695 #if WITH_AFB_HOOK
 696         const char *tracereq = NULL, *traceapi = NULL, *traceevt = NULL,
 697 #if !defined(REMOVE_LEGACY_TRACE)
 698                 *tracesvc = NULL, *traceditf = NULL,
 699 #endif
 700                 *traceses = NULL, *traceglob = NULL;
 701 #endif
 702         const char *workdir = NULL, *rootdir = NULL, *token = NULL;
 703         struct json_object *settings = NULL;
 704         int max_session_count, session_timeout, api_timeout;
 705         int rc;
 706 #if WITH_LIBMICROHTTPD
 707         const char *rootapi = NULL;
 708         int no_httpd = 0, http_port = -1;
 709         struct afb_hsrv *hsrv;
 710 #endif
 711
 712
 713         afb_debug("start-entry");
 714
 715         if (signum) {
 716                 ERROR("start aborted: received signal %s", strsignal(signum));
 717                 exit(1);
 718         }
 719
 720         rc = wrap_json_unpack(main_config, "{"
 721                         "ss ss s?s"
 722                         "si si si"
 723 #if WITH_LIBMICROHTTPD
 724                         "s?b s?i s?s"
 725 #endif
 726 #if WITH_AFB_HOOK
 727 #if !defined(REMOVE_LEGACY_TRACE)
 728                         "s?s s?s"
 729 #endif
 730                         "s?s s?s s?s s?s s?s"
 731 #endif
 732                         "s?o"
 733                         "}",
 734
 735                         "rootdir", &rootdir,
 736                         "workdir", &workdir,
 737                         "token", &token,
 738
 739                         "apitimeout", &api_timeout,
 740                         "cntxtimeout", &session_timeout,
 741                         "session-max", &max_session_count,
 742
 743 #if WITH_LIBMICROHTTPD
 744                         "no-httpd", &no_httpd,
 745                         "port", &http_port,
 746                         "rootapi", &rootapi,
 747 #endif
 748 #if WITH_AFB_HOOK
 749 #if !defined(REMOVE_LEGACY_TRACE)
 750                         "tracesvc", &tracesvc,
 751                         "traceditf", &traceditf,
 752 #endif
 753                         "tracereq", &tracereq,
 754                         "traceapi", &traceapi,
 755                         "traceevt", &traceevt,
 756                         "traceses",  &traceses,
 757                         "traceglob", &traceglob,
 758 #endif
 759                         "set", &settings
 760                         );
 761         if (rc < 0) {
 762                 ERROR("Unable to get start config");
 763                 exit(1);
 764         }
 765
 766         /* initialize session handling */
 767         if (afb_session_init(max_session_count, session_timeout, token)) {
 768                 ERROR("initialisation of session manager failed");
 769                 goto error;
 770         }
 771
 772         /* set the directories */
 773         mkdir(workdir, S_IRWXU | S_IRGRP | S_IXGRP);
 774         if (chdir(workdir) < 0) {
 775                 ERROR("Can't enter working dir %s", workdir);
 776                 goto error;
 777         }
 778         if (afb_common_rootdir_set(rootdir) < 0) {
 779                 ERROR("failed to set common root directory %s", rootdir);
 780                 goto error;
 781         }
 782         if (addenv_realpath("AFB_WORKDIR", "."     /* resolved by realpath */)
 783          || addenv_realpath("AFB_ROOTDIR", rootdir /* relative to current directory */)) {
 784                 ERROR("can't set DIR environment");
 785                 goto error;
 786         }
 787
 788 #if WITH_LIBMICROHTTPD
 789         /* setup HTTP */
 790         if (!no_httpd) {
 791                 if (http_port < 0) {
 792                         ERROR("no port is defined");
 793                         goto error;
 794                 }
 795                 if (http_port == 0) {
 796                         ERROR("random port is not implemented");
 797                         goto error;
 798                 }
 799                 if (addenv_int("AFB_PORT", http_port)
 800                  || addenv("AFB_TOKEN", afb_session_initial_token())) {
 801                         ERROR("can't set HTTP environment");
 802                         goto error;
 803                 }
 804         }
 805 #endif
 806
 807         /* configure the daemon */
 808         afb_export_set_config(settings);
 809         main_apiset = afb_apiset_create("main", api_timeout);
 810         if (!main_apiset) {
 811                 ERROR("can't create main api set");
 812                 goto error;
 813         }
 814         if (afb_monitor_init(main_apiset, main_apiset) < 0) {
 815                 ERROR("failed to setup monitor");
 816                 goto error;
 817         }
 818 #if WITH_SUPERVISION
 819         if (afb_supervision_init(main_apiset, main_config) < 0) {
 820                 ERROR("failed to setup supervision");
 821                 goto error;
 822         }
 823 #endif
 824
 825 #if WITH_AFB_HOOK
 826         /* install hooks */
 827         if (tracereq)
 828                 afb_hook_create_xreq(NULL, NULL, NULL, afb_hook_flags_xreq_from_text(tracereq), NULL, NULL);
 829 #if !defined(REMOVE_LEGACY_TRACE)
 830         if (traceapi || tracesvc || traceditf)
 831                 afb_hook_create_api(NULL, afb_hook_flags_api_from_text(traceapi)
 832                         | afb_hook_flags_legacy_ditf_from_text(traceditf)
 833                         | afb_hook_flags_legacy_svc_from_text(tracesvc), NULL, NULL);
 834 #else
 835         if (traceapi)
 836                 afb_hook_create_api(NULL, afb_hook_flags_api_from_text(traceapi), NULL, NULL);
 837 #endif
 838         if (traceevt)
 839                 afb_hook_create_evt(NULL, afb_hook_flags_evt_from_text(traceevt), NULL, NULL);
 840         if (traceses)
 841                 afb_hook_create_session(NULL, afb_hook_flags_session_from_text(traceses), NULL, NULL);
 842         if (traceglob)
 843                 afb_hook_create_global(afb_hook_flags_global_from_text(traceglob), NULL, NULL);
 844 #endif
 845
 846         /* load bindings and apis */
 847         afb_debug("start-load");
 848 #if WITH_DYNAMIC_BINDING
 849         apiset_start_list("binding", afb_api_so_add_binding, "the binding");
 850         apiset_start_list("ldpaths", afb_api_so_add_pathset_fails, "the binding path set");
 851         apiset_start_list("weak-ldpaths", afb_api_so_add_pathset_nofails, "the weak binding path set");
 852 #endif
 853         apiset_start_list("auto-api", afb_autoset_add_any, "the automatic api path set");
 854 #if WITH_DBUS_TRANSPARENCY
 855         apiset_start_list("dbus-client", afb_api_dbus_add_client, "the afb-dbus client");
 856 #endif
 857         apiset_start_list("ws-client", afb_api_ws_add_client_weak, "the afb-websocket client");
 858
 859         DEBUG("Init config done");
 860
 861         /* start the services */
 862         afb_debug("start-start");
 863 #if !defined(NO_CALL_PERSONALITY)
 864         personality((unsigned long)-1L);
 865 #endif
 866         if (afb_apiset_start_all_services(main_apiset) < 0)
 867                 goto error;
 868
 869         /* export started apis */
 870         apiset_start_list("ws-server", afb_api_ws_add_server, "the afb-websocket service");
 871 #if WITH_DBUS_TRANSPARENCY
 872         apiset_start_list("dbus-server", afb_api_dbus_add_server, "the afb-dbus service");
 873 #endif
 874
 875         /* start the HTTP server */
 876 #if WITH_LIBMICROHTTPD
 877         afb_debug("start-http");
 878         if (!no_httpd) {
 879                 if (!afb_hreq_init_cookie(http_port, rootapi, session_timeout)) {
 880                         ERROR("initialisation of HTTP cookies failed");
 881                         goto error;
 882                 }
 883
 884                 hsrv = start_http_server();
 885                 if (hsrv == NULL)
 886                         goto error;
 887         }
 888 #endif
 889
 890         /* run the startup calls */
 891         afb_debug("start-call");
 892         run_startup_calls();
 893
 894         /* run the command */
 895         afb_debug("start-exec");
 896         if (execute_command() < 0)
 897                 goto error;
 898
 899         /* ready */
 900 #if WITH_SYSTEMD
 901         sd_notify(1, "READY=1");
 902 #endif
 903
 904         /* activate the watchdog */
 905 #if HAS_WATCHDOG
 906         if (watchdog_activate() < 0)
 907                 ERROR("can't start the watchdog");
 908 #endif
 909
 910         return;
 911 error:
 912         exit(1);
 913 }
 914
 915 /*---------------------------------------------------------
 916  | main
 917  |   Parse option and launch action
 918  +--------------------------------------------------------- */
 919
 920 int main(int argc, char *argv[])
 921 {
 922         struct json_object *obj;
 923         afb_debug("main-entry");
 924
 925         // ------------- Build session handler & init config -------
 926         main_config = afb_args_parse(argc, argv);
 927         if (sig_monitor_init(
 928                 !json_object_object_get_ex(main_config, "trap-faults", &obj)
 929                         || json_object_get_boolean(obj)) < 0) {
 930                 ERROR("failed to initialise signal handlers");
 931                 return 1;
 932         }
 933
 934
 935         if (json_object_object_get_ex(main_config, "name", &obj)) {
 936                 verbose_set_name(json_object_get_string(obj), 0);
 937                 process_name_set_name(json_object_get_string(obj));
 938                 process_name_replace_cmdline(argv, json_object_get_string(obj));
 939         }
 940         afb_debug("main-args");
 941
 942         // --------- run -----------
 943         daemonize();
 944         INFO("running with pid %d", getpid());
 945
 946         /* set the daemon environment */
 947         setup_daemon();
 948
 949         afb_debug("main-start");
 950
 951         /* enter job processing */
 952         jobs_start(3, 0, 50, start, NULL);
 953         WARNING("hoops returned from jobs_enter! [report bug]");
 954         return 1;
 955 }
 956