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