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