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