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-api-js.h"
  51 #include "afb-hsrv.h"
  52 #include "afb-hreq.h"
  53 #include "afb-xreq.h"
  54 #include "afb-session.h"
  55 #include "verbose.h"
  56 #include "afb-common.h"
  57 #include "afb-export.h"
  58 #include "afb-monitor.h"
  59 #if WITH_AFB_HOOK
  60 #include "afb-hook.h"
  61 #include "afb-hook-flags.h"
  62 #endif
  63 #include "afb-debug.h"
  64 #if WITH_SUPERVISION
  65 #   include "afb-supervision.h"
  66 #endif
  67
  68 #include "process-name.h"
  69 #include "wrap-json.h"
  70 #include "jobs.h"
  71 #include "sig-monitor.h"
  72 #include "watchdog.h"
  73
  74 #if !defined(DEFAULT_BINDER_INTERFACE)
  75 #  define DEFAULT_BINDER_INTERFACE NULL
  76 #endif
  77
  78 /*
  79    if SELF_PGROUP == 0 the launched command is the group leader
  80    if SELF_PGROUP != 0 afb-daemon is the group leader
  81 */
  82 #define SELF_PGROUP 0
  83
  84 struct afb_apiset *main_apiset;
  85 struct json_object *main_config;
  86
  87 static pid_t childpid;
  88
  89 /**
  90  * Tiny helper around putenv: add the variable name=value
  91  *
  92  * @param name name of the variable to set
  93  * @param value value to set to the variable
  94  *
  95  * @return 0 in case of success or -1 in case of error (with errno set to ENOMEM)
  96  */
  97 static int addenv(const char *name, const char *value)
  98 {
  99         char *head, *middle;
 100
 101         head = malloc(2 + strlen(name) + strlen(value));
 102         if (head == NULL) {
 103                 errno = ENOMEM;
 104                 return -1;
 105         }
 106         middle = stpcpy(head, name);
 107         middle[0] = '=';
 108         strcpy(&middle[1], value);
 109         return putenv(head);
 110 }
 111
 112 /**
 113  * Tiny helper around addenv that export the real path
 114  *
 115  * @param name name of the variable to set
 116  * @param path the path value to export to the variable
 117  *
 118  * @return 0 in case of success or -1 in case of error (with errno set to ENOMEM)
 119  */
 120 static int addenv_realpath(const char *name, const char *path)
 121 {
 122         char buffer[PATH_MAX];
 123         char *p = realpath(path, buffer);
 124         return p ? addenv(name, p) : -1;
 125 }
 126
 127 /**
 128  * Tiny helper around addenv that export an integer
 129  *
 130  * @param name name of the variable to set
 131  * @param value the integer value to export
 132  *
 133  * @return 0 in case of success or -1 in case of error (with errno set to ENOMEM)
 134  */
 135 static int addenv_int(const char *name, int value)
 136 {
 137         char buffer[64];
 138         snprintf(buffer, sizeof buffer, "%d", value);
 139         return addenv(name, buffer);
 140 }
 141
 142 /*----------------------------------------------------------
 143  |   helpers for handling list of arguments
 144  +--------------------------------------------------------- */
 145
 146 static const char *run_for_config_array_opt(const char *name,
 147                                             int (*run) (void *closure, const char *value),
 148                                             void *closure)
 149 {
 150         int i, n, rc;
 151         struct json_object *array, *value;
 152
 153         if (json_object_object_get_ex(main_config, name, &array)) {
 154                 if (!json_object_is_type(array, json_type_array))
 155                         return json_object_get_string(array);
 156                 n = (int)json_object_array_length(array);
 157                 for (i = 0 ; i < n ; i++) {
 158                         value = json_object_array_get_idx(array, i);
 159                         rc = run(closure, json_object_get_string(value));
 160                         if (!rc)
 161                                 return json_object_get_string(value);
 162                 }
 163         }
 164         return NULL;
 165 }
 166
 167 static int run_start(void *closure, const char *value)
 168 {
 169         int (*starter) (const char *value, struct afb_apiset *declare_set, struct afb_apiset *call_set) = closure;
 170         return starter(value, main_apiset, main_apiset) >= 0;
 171 }
 172
 173 static void apiset_start_list(const char *name,
 174                         int (*starter) (const char *value, struct afb_apiset *declare_set, struct afb_apiset *call_set),
 175                         const char *message)
 176 {
 177         const char *item = run_for_config_array_opt(name, run_start, starter);
 178         if (item) {
 179                 ERROR("can't start %s %s", message, item);
 180                 exit(1);
 181         }
 182 }
 183
 184 /*----------------------------------------------------------
 185  | exit_handler
 186  |   Handles on exit specific actions
 187  +--------------------------------------------------------- */
 188 static void exit_handler()
 189 {
 190         struct sigaction siga;
 191
 192         memset(&siga, 0, sizeof siga);
 193         siga.sa_handler = SIG_IGN;
 194         sigaction(SIGTERM, &siga, NULL);
 195
 196         if (SELF_PGROUP)
 197                 killpg(0, SIGTERM);
 198         else if (childpid > 0)
 199                 killpg(childpid, SIGTERM);
 200 }
 201
 202 static void on_sigterm(int signum, siginfo_t *info, void *uctx)
 203 {
 204         NOTICE("Received SIGTERM");
 205         exit(0);
 206 }
 207
 208 static void on_sighup(int signum, siginfo_t *info, void *uctx)
 209 {
 210         NOTICE("Received SIGHUP");
 211         /* TODO */
 212 }
 213
 214 static void setup_daemon()
 215 {
 216         struct sigaction siga;
 217
 218         /* install signal handlers */
 219         memset(&siga, 0, sizeof siga);
 220         siga.sa_flags = SA_SIGINFO;
 221
 222         siga.sa_sigaction = on_sigterm;
 223         sigaction(SIGTERM, &siga, NULL);
 224
 225         siga.sa_sigaction = on_sighup;
 226         sigaction(SIGHUP, &siga, NULL);
 227
 228         /* handle groups */
 229         atexit(exit_handler);
 230
 231         /* ignore any SIGPIPE */
 232         signal(SIGPIPE, SIG_IGN);
 233 }
 234
 235 /*----------------------------------------------------------
 236  | daemonize
 237  |   set the process in background
 238  +--------------------------------------------------------- */
 239 static void daemonize()
 240 {
 241         int fd = 0, daemon, nostdin;
 242         const char *output;
 243         pid_t pid;
 244
 245         daemon = 0;
 246         output = NULL;
 247         wrap_json_unpack(main_config, "{s?b s?s}", "daemon", &daemon, "output", &output);
 248         nostdin = 0;
 249
 250         if (output) {
 251                 fd = open(output, O_WRONLY | O_APPEND | O_CREAT, 0640);
 252                 if (fd < 0) {
 253                         ERROR("Can't open output %s", output);
 254                         exit(1);
 255                 }
 256         }
 257
 258         if (daemon) {
 259                 INFO("entering background mode");
 260
 261                 pid = fork();
 262                 if (pid == -1) {
 263                         ERROR("Failed to fork daemon process");
 264                         exit(1);
 265                 }
 266                 if (pid != 0)
 267                         _exit(0);
 268
 269                 nostdin = 1;
 270         }
 271
 272         /* closes the input */
 273         if (output) {
 274                 NOTICE("Redirecting output to %s", output);
 275                 close(2);
 276                 dup(fd);
 277                 close(1);
 278                 dup(fd);
 279                 close(fd);
 280         }
 281
 282         if (nostdin)
 283                 close(0); /* except if 'daemon', ctrl+C still works after that */
 284 }
 285
 286 /*---------------------------------------------------------
 287  | http server
 288  |   Handles the HTTP server
 289  +--------------------------------------------------------- */
 290 static int init_alias(void *closure, const char *spec)
 291 {
 292         struct afb_hsrv *hsrv = closure;
 293         char *path = strchr(spec, ':');
 294
 295         if (path == NULL) {
 296                 ERROR("Missing ':' in alias %s. Alias ignored", spec);
 297                 return 1;
 298         }
 299         *path++ = 0;
 300         INFO("Alias for url=%s to path=%s", spec, path);
 301         return afb_hsrv_add_alias(hsrv, spec, afb_common_rootdir_get_fd(), path,
 302                                   0, 0);
 303 }
 304
 305 static int init_http_server(struct afb_hsrv *hsrv)
 306 {
 307         int rc;
 308         const char *rootapi, *roothttp, *rootbase;
 309
 310         roothttp = NULL;
 311         rc = wrap_json_unpack(main_config, "{ss ss s?s}",
 312                                 "rootapi", &rootapi,
 313                                 "rootbase", &rootbase,
 314                                 "roothttp", &roothttp);
 315         if (rc < 0) {
 316                 ERROR("Can't get HTTP server config");
 317                 exit(1);
 318         }
 319
 320         if (!afb_hsrv_add_handler(hsrv, rootapi,
 321                         afb_hswitch_websocket_switch, main_apiset, 20))
 322                 return 0;
 323
 324         if (!afb_hsrv_add_handler(hsrv, rootapi,
 325                         afb_hswitch_apis, main_apiset, 10))
 326                 return 0;
 327
 328         if (run_for_config_array_opt("alias", init_alias, hsrv))
 329                 return 0;
 330
 331         if (roothttp != NULL) {
 332                 if (!afb_hsrv_add_alias(hsrv, "",
 333                         afb_common_rootdir_get_fd(), roothttp, -10, 1))
 334                         return 0;
 335         }
 336
 337         if (!afb_hsrv_add_handler(hsrv, rootbase,
 338                         afb_hswitch_one_page_api_redirect, NULL, -20))
 339                 return 0;
 340
 341         return 1;
 342 }
 343
 344 static struct afb_hsrv *start_http_server()
 345 {
 346         int rc;
 347         const char *uploaddir, *rootdir;
 348         struct afb_hsrv *hsrv;
 349         int cache_timeout, http_port;
 350
 351         rc = wrap_json_unpack(main_config, "{ss ss si si}",
 352                                 "uploaddir", &uploaddir,
 353                                 "rootdir", &rootdir,
 354                                 "cache-eol", &cache_timeout,
 355                                 "port", &http_port);
 356         if (rc < 0) {
 357                 ERROR("Can't get HTTP server start config");
 358                 exit(1);
 359         }
 360
 361         if (afb_hreq_init_download_path(uploaddir)) {
 362                 static const char fallback_uploaddir[] = "/tmp";
 363                 WARNING("unable to set the upload directory %s", uploaddir);
 364                 if (afb_hreq_init_download_path(fallback_uploaddir)) {
 365                         ERROR("unable to fallback to upload directory %s", fallback_uploaddir);
 366                         return NULL;
 367                 }
 368         }
 369
 370         hsrv = afb_hsrv_create();
 371         if (hsrv == NULL) {
 372                 ERROR("memory allocation failure");
 373                 return NULL;
 374         }
 375
 376         if (!afb_hsrv_set_cache_timeout(hsrv, cache_timeout)
 377             || !init_http_server(hsrv)) {
 378                 ERROR("initialisation of httpd failed");
 379                 afb_hsrv_put(hsrv);
 380                 return NULL;
 381         }
 382
 383         NOTICE("Waiting port=%d rootdir=%s", http_port, rootdir);
 384         NOTICE("Browser URL= http://localhost:%d", http_port);
 385
 386         rc = afb_hsrv_start(hsrv, 15);
 387         if (!rc) {
 388                 ERROR("starting of httpd failed");
 389                 afb_hsrv_put(hsrv);
 390                 return NULL;
 391         }
 392
 393         rc = afb_hsrv_add_interface_tcp(hsrv, DEFAULT_BINDER_INTERFACE, (uint16_t) http_port);
 394         if (!rc) {
 395                 ERROR("setting interface failed");
 396                 afb_hsrv_put(hsrv);
 397                 return NULL;
 398         }
 399
 400         return hsrv;
 401 }
 402
 403 /*---------------------------------------------------------
 404  | execute_command
 405  +--------------------------------------------------------- */
 406
 407 static void exit_at_end()
 408 {
 409         exit(0);
 410 }
 411
 412 static void wait_child(int signum, void* arg)
 413 {
 414         pid_t pid = (pid_t)(intptr_t)arg;
 415         pid_t pidchld = childpid;
 416
 417         if (pidchld == pid) {
 418                 childpid = 0;
 419                 if (!SELF_PGROUP)
 420                         killpg(pidchld, SIGKILL);
 421                 waitpid(pidchld, NULL, 0);
 422                 jobs_exit(exit_at_end);
 423         } else {
 424                 waitpid(pid, NULL, 0);
 425         }
 426 }
 427
 428 static void on_sigchld(int signum, siginfo_t *info, void *uctx)
 429 {
 430         if (info->si_pid == childpid) {
 431                 switch (info->si_code) {
 432                 case CLD_EXITED:
 433                 case CLD_KILLED:
 434                 case CLD_DUMPED:
 435                         jobs_queue_lazy(0, 0, wait_child, (void*)(intptr_t)info->si_pid);
 436                 default:
 437                         break;
 438                 }
 439         }
 440 }
 441
 442 /*
 443 # @@ @
 444 # @p port
 445 # @t token
 446 */
 447
 448 #define SUBST_CHAR  '@'
 449 #define SUBST_STR   "@"
 450
 451 static char *instanciate_string(const char *arg, const char *port, const char *token)
 452 {
 453         char *resu, *it, *wr;
 454         int chg, dif;
 455
 456         /* get the changes */
 457         chg = 0;
 458         dif = 0;
 459         it = strchrnul(arg, SUBST_CHAR);
 460         while (*it) {
 461                 switch(*++it) {
 462                 case 'p': chg++; dif += (int)strlen(port) - 2; break;
 463                 case 't': chg++; dif += (int)strlen(token) - 2; break;
 464                 case SUBST_CHAR: it++; chg++; dif--; break;
 465                 default: break;
 466                 }
 467                 it = strchrnul(it, SUBST_CHAR);
 468         }
 469
 470         /* return arg when no change */
 471         if (!chg)
 472                 return strdup(arg);
 473
 474         /* allocates the result */
 475         resu = malloc((it - arg) + dif + 1);
 476         if (!resu) {
 477                 ERROR("out of memory");
 478                 return NULL;
 479         }
 480
 481         /* instanciate the arguments */
 482         wr = resu;
 483         for (;;) {
 484                 it = strchrnul(arg, SUBST_CHAR);
 485                 wr = mempcpy(wr, arg, it - arg);
 486                 if (!*it)
 487                         break;
 488                 switch(*++it) {
 489                 case 'p': wr = stpcpy(wr, port); break;
 490                 case 't': wr = stpcpy(wr, token); break;
 491                 default: *wr++ = SUBST_CHAR; /*@fallthrough@*/
 492                 case SUBST_CHAR: *wr++ = *it;
 493                 }
 494                 arg = ++it;
 495         }
 496
 497         *wr = 0;
 498         return resu;
 499 }
 500
 501 static int instanciate_environ(const char *port, const char *token)
 502 {
 503         extern char **environ;
 504         char *repl;
 505         int i;
 506
 507         /* instantiate the environment */
 508         for (i = 0 ; environ[i] ; i++) {
 509                 repl = instanciate_string(environ[i], port, token);
 510                 if (!repl)
 511                         return -1;
 512                 environ[i] = repl;
 513         }
 514         return 0;
 515 }
 516
 517 static char **instanciate_command_args(struct json_object *exec, const char *port, const char *token)
 518 {
 519         char **result;
 520         char *repl;
 521         int i, n;
 522
 523         /* allocates the result */
 524         n = (int)json_object_array_length(exec);
 525         result = malloc((n + 1) * sizeof * result);
 526         if (!result) {
 527                 ERROR("out of memory");
 528                 return NULL;
 529         }
 530
 531         /* instanciate the arguments */
 532         for (i = 0 ; i < n ; i++) {
 533                 repl = instanciate_string(json_object_get_string(json_object_array_get_idx(exec, i)), port, token);
 534                 if (!repl) {
 535                         while(i)
 536                                 free(result[--i]);
 537                         free(result);
 538                         return NULL;
 539                 }
 540                 result[i] = repl;
 541         }
 542         result[i] = NULL;
 543         return result;
 544 }
 545
 546 static int execute_command()
 547 {
 548         struct json_object *exec, *oport;
 549         struct sigaction siga;
 550         char port[20];
 551         const char *token;
 552         char **args;
 553         int rc;
 554
 555         /* check whether a command is to execute or not */
 556         if (!json_object_object_get_ex(main_config, "exec", &exec))
 557                 return 0;
 558
 559         if (SELF_PGROUP)
 560                 setpgid(0, 0);
 561
 562         /* install signal handler */
 563         memset(&siga, 0, sizeof siga);
 564         siga.sa_sigaction = on_sigchld;
 565         siga.sa_flags = SA_SIGINFO;
 566         sigaction(SIGCHLD, &siga, NULL);
 567
 568         /* fork now */
 569         childpid = fork();
 570         if (childpid)
 571                 return 0;
 572
 573         /* compute the string for port */
 574         if (json_object_object_get_ex(main_config, "port", &oport))
 575                 rc = snprintf(port, sizeof port, "%s", json_object_get_string(oport));
 576         else
 577                 rc = snprintf(port, sizeof port, "%cp", SUBST_CHAR);
 578         if (rc < 0 || rc >= (int)(sizeof port)) {
 579                 ERROR("port->txt failed");
 580         }
 581         else {
 582                 /* instantiate arguments and environment */
 583                 token = afb_session_initial_token();
 584                 args = instanciate_command_args(exec, port, token);
 585                 if (args && instanciate_environ(port, token) >= 0) {
 586                         /* run */
 587                         if (!SELF_PGROUP)
 588                                 setpgid(0, 0);
 589                         execv(args[0], args);
 590                         ERROR("can't launch %s: %m", args[0]);
 591                 }
 592         }
 593         exit(1);
 594         return -1;
 595 }
 596
 597 /*---------------------------------------------------------
 598  | startup calls
 599  +--------------------------------------------------------- */
 600
 601 struct startup_req
 602 {
 603         struct afb_xreq xreq;
 604         char *api;
 605         char *verb;
 606         struct json_object *calls;
 607         int index;
 608         int count;
 609         const char *callspec;
 610         struct afb_session *session;
 611 };
 612
 613 static void startup_call_reply(struct afb_xreq *xreq, struct json_object *object, const char *error, const char *info)
 614 {
 615         struct startup_req *sreq = CONTAINER_OF_XREQ(struct startup_req, xreq);
 616
 617         info = info ?: "";
 618         if (!error) {
 619                 NOTICE("startup call %s returned %s (%s)", sreq->callspec, json_object_get_string(object), info);
 620                 json_object_put(object);
 621         } else {
 622                 ERROR("startup call %s ERROR! %s (%s)", sreq->callspec, error, info);
 623                 exit(1);
 624         }
 625 }
 626
 627 static void startup_call_current(struct startup_req *sreq);
 628
 629 static void startup_call_unref(struct afb_xreq *xreq)
 630 {
 631         struct startup_req *sreq = CONTAINER_OF_XREQ(struct startup_req, xreq);
 632
 633         free(sreq->api);
 634         free(sreq->verb);
 635         json_object_put(sreq->xreq.json);
 636         if (++sreq->index < sreq->count)
 637                 startup_call_current(sreq);
 638         else {
 639                 afb_session_close(sreq->session);
 640                 afb_session_unref(sreq->session);
 641                 free(sreq);
 642         }
 643 }
 644
 645 static struct afb_xreq_query_itf startup_xreq_itf =
 646 {
 647         .reply = startup_call_reply,
 648         .unref = startup_call_unref
 649 };
 650
 651 static void startup_call_current(struct startup_req *sreq)
 652 {
 653         const char *api, *verb, *json;
 654         enum json_tokener_error jerr;
 655
 656         sreq->callspec = json_object_get_string(json_object_array_get_idx(sreq->calls, sreq->index)),
 657         api = sreq->callspec;
 658         verb = strchr(api, '/');
 659         if (verb) {
 660                 json = strchr(verb, ':');
 661                 if (json) {
 662                         afb_xreq_init(&sreq->xreq, &startup_xreq_itf);
 663                         afb_context_init_validated(&sreq->xreq.context, sreq->session);
 664                         sreq->api = strndup(api, verb - api);
 665                         sreq->verb = strndup(verb + 1, json - verb - 1);
 666                         sreq->xreq.request.called_api = sreq->api;
 667                         sreq->xreq.request.called_verb = sreq->verb;
 668                         sreq->xreq.json = json_tokener_parse_verbose(json + 1, &jerr);
 669                         if (sreq->api && sreq->verb && jerr == json_tokener_success) {
 670                                 afb_xreq_process(&sreq->xreq, main_apiset);
 671                                 return;
 672                         }
 673                 }
 674         }
 675         ERROR("Bad call specification %s", sreq->callspec);
 676         exit(1);
 677 }
 678
 679 static void run_startup_calls()
 680 {
 681         struct json_object *calls;
 682         struct startup_req *sreq;
 683         int count;
 684
 685         if (json_object_object_get_ex(main_config, "call", &calls)
 686          && json_object_is_type(calls, json_type_array)
 687          && (count = (int)json_object_array_length(calls))) {
 688                 sreq = calloc(1, sizeof *sreq);
 689                 sreq->session = afb_session_create(3600);
 690                 sreq->calls = calls;
 691                 sreq->index = 0;
 692                 sreq->count = count;
 693                 startup_call_current(sreq);
 694         }
 695 }
 696
 697 /*---------------------------------------------------------
 698  | job for starting the daemon
 699  +--------------------------------------------------------- */
 700
 701 static void start(int signum, void *arg)
 702 {
 703 #if WITH_AFB_HOOK
 704         const char *tracereq = NULL, *traceapi = NULL, *traceevt = NULL,
 705 #if !defined(REMOVE_LEGACY_TRACE)
 706                 *tracesvc = NULL, *traceditf = NULL,
 707 #endif
 708                 *traceses = NULL, *traceglob = NULL;
 709 #endif
 710         const char *workdir, *rootdir, *token, *rootapi;
 711         struct json_object *settings;
 712         struct afb_hsrv *hsrv;
 713         int max_session_count, session_timeout, api_timeout;
 714         int no_httpd, http_port;
 715         int rc;
 716
 717
 718         afb_debug("start-entry");
 719
 720         if (signum) {
 721                 ERROR("start aborted: received signal %s", strsignal(signum));
 722                 exit(1);
 723         }
 724
 725         settings = NULL;
 726         no_httpd = 0;
 727         http_port = -1;
 728         rootapi = token = NULL;
 729         rc = wrap_json_unpack(main_config, "{"
 730                         "ss ss s?s"
 731                         "si si si"
 732                         "s?b s?i s?s"
 733 #if WITH_AFB_HOOK
 734 #if !defined(REMOVE_LEGACY_TRACE)
 735                         "s?s s?s"
 736 #endif
 737                         "s?s s?s s?s s?s s?s"
 738 #endif
 739                         "s?o"
 740                         "}",
 741
 742                         "rootdir", &rootdir,
 743                         "workdir", &workdir,
 744                         "token", &token,
 745
 746                         "apitimeout", &api_timeout,
 747                         "cntxtimeout", &session_timeout,
 748                         "session-max", &max_session_count,
 749
 750                         "no-httpd", &no_httpd,
 751                         "port", &http_port,
 752                         "rootapi", &rootapi,
 753
 754 #if WITH_AFB_HOOK
 755 #if !defined(REMOVE_LEGACY_TRACE)
 756                         "tracesvc", &tracesvc,
 757                         "traceditf", &traceditf,
 758 #endif
 759                         "tracereq", &tracereq,
 760                         "traceapi", &traceapi,
 761                         "traceevt", &traceevt,
 762                         "traceses",  &traceses,
 763                         "traceglob", &traceglob,
 764 #endif
 765                         "set", &settings
 766                         );
 767         if (rc < 0) {
 768                 ERROR("Unable to get start config");
 769                 exit(1);
 770         }
 771
 772         /* initialize session handling */
 773         if (afb_session_init(max_session_count, session_timeout, token)) {
 774                 ERROR("initialisation of session manager failed");
 775                 goto error;
 776         }
 777
 778         /* set the directories */
 779         mkdir(workdir, S_IRWXU | S_IRGRP | S_IXGRP);
 780         if (chdir(workdir) < 0) {
 781                 ERROR("Can't enter working dir %s", workdir);
 782                 goto error;
 783         }
 784         if (afb_common_rootdir_set(rootdir) < 0) {
 785                 ERROR("failed to set common root directory %s", rootdir);
 786                 goto error;
 787         }
 788         if (addenv_realpath("AFB_WORKDIR", "."     /* resolved by realpath */)
 789          || addenv_realpath("AFB_ROOTDIR", rootdir /* relative to current directory */)) {
 790                 ERROR("can't set DIR environment");
 791                 goto error;
 792         }
 793
 794         /* setup HTTP */
 795         if (!no_httpd) {
 796                 if (http_port < 0) {
 797                         ERROR("no port is defined");
 798                         goto error;
 799                 }
 800                 if (http_port == 0) {
 801                         ERROR("random port is not implemented");
 802                         goto error;
 803                 }
 804                 if (addenv_int("AFB_PORT", http_port)
 805                  || addenv("AFB_TOKEN", afb_session_initial_token())) {
 806                         ERROR("can't set HTTP environment");
 807                         goto error;
 808                 }
 809         }
 810
 811         /* configure the daemon */
 812         afb_export_set_config(settings);
 813         main_apiset = afb_apiset_create("main", api_timeout);
 814         if (!main_apiset) {
 815                 ERROR("can't create main api set");
 816                 goto error;
 817         }
 818         if (afb_monitor_init(main_apiset, main_apiset) < 0) {
 819                 ERROR("failed to setup monitor");
 820                 goto error;
 821         }
 822 #if WITH_SUPERVISION
 823         if (afb_supervision_init(main_apiset, main_config) < 0) {
 824                 ERROR("failed to setup supervision");
 825                 goto error;
 826         }
 827 #endif
 828
 829 #if WITH_AFB_HOOK
 830         /* install hooks */
 831         if (tracereq)
 832                 afb_hook_create_xreq(NULL, NULL, NULL, afb_hook_flags_xreq_from_text(tracereq), NULL, NULL);
 833 #if !defined(REMOVE_LEGACY_TRACE)
 834         if (traceapi || tracesvc || traceditf)
 835                 afb_hook_create_api(NULL, afb_hook_flags_api_from_text(traceapi)
 836                         | afb_hook_flags_legacy_ditf_from_text(traceditf)
 837                         | afb_hook_flags_legacy_svc_from_text(tracesvc), NULL, NULL);
 838 #else
 839         if (traceapi)
 840                 afb_hook_create_api(NULL, afb_hook_flags_api_from_text(traceapi), NULL, NULL);
 841 #endif
 842         if (traceevt)
 843                 afb_hook_create_evt(NULL, afb_hook_flags_evt_from_text(traceevt), NULL, NULL);
 844         if (traceses)
 845                 afb_hook_create_session(NULL, afb_hook_flags_session_from_text(traceses), NULL, NULL);
 846         if (traceglob)
 847                 afb_hook_create_global(afb_hook_flags_global_from_text(traceglob), NULL, NULL);
 848 #endif
 849
 850         /* load bindings and apis */
 851         afb_debug("start-load");
 852 #if WITH_DYNAMIC_BINDING
 853         apiset_start_list("binding", afb_api_so_add_binding, "the binding");
 854         apiset_start_list("ldpaths", afb_api_so_add_pathset_fails, "the binding path set");
 855         apiset_start_list("weak-ldpaths", afb_api_so_add_pathset_nofails, "the weak binding path set");
 856 #endif
 857         apiset_start_list("auto-api", afb_autoset_add_any, "the automatic api path set");
 858         apiset_start_list("jsapi", afb_api_js_add, "the jsapi");
 859 #if WITH_DBUS_TRANSPARENCY
 860         apiset_start_list("dbus-client", afb_api_dbus_add_client, "the afb-dbus client");
 861 #endif
 862         apiset_start_list("ws-client", afb_api_ws_add_client_weak, "the afb-websocket client");
 863
 864         DEBUG("Init config done");
 865
 866         /* start the services */
 867         afb_debug("start-start");
 868 #if !defined(NO_CALL_PERSONALITY)
 869         personality((unsigned long)-1L);
 870 #endif
 871         if (afb_apiset_start_all_services(main_apiset) < 0)
 872                 goto error;
 873
 874         /* export started apis */
 875         apiset_start_list("ws-server", afb_api_ws_add_server, "the afb-websocket service");
 876 #if WITH_DBUS_TRANSPARENCY
 877         apiset_start_list("dbus-server", afb_api_dbus_add_server, "the afb-dbus service");
 878 #endif
 879
 880         /* start the HTTP server */
 881         afb_debug("start-http");
 882         if (!no_httpd) {
 883                 if (!afb_hreq_init_cookie(http_port, rootapi, session_timeout)) {
 884                         ERROR("initialisation of HTTP cookies failed");
 885                         goto error;
 886                 }
 887
 888                 hsrv = start_http_server();
 889                 if (hsrv == NULL)
 890                         goto error;
 891         }
 892
 893         /* run the startup calls */
 894         afb_debug("start-call");
 895         run_startup_calls();
 896
 897         /* run the command */
 898         afb_debug("start-exec");
 899         if (execute_command() < 0)
 900                 goto error;
 901
 902         /* ready */
 903         sd_notify(1, "READY=1");
 904
 905         /* activate the watchdog */
 906 #if HAS_WATCHDOG
 907         if (watchdog_activate() < 0)
 908                 ERROR("can't start the watchdog");
 909 #endif
 910
 911         return;
 912 error:
 913         exit(1);
 914 }
 915
 916 /*---------------------------------------------------------
 917  | main
 918  |   Parse option and launch action
 919  +--------------------------------------------------------- */
 920
 921 int main(int argc, char *argv[])
 922 {
 923         struct json_object *obj;
 924         afb_debug("main-entry");
 925
 926         // ------------- Build session handler & init config -------
 927         main_config = afb_args_parse(argc, argv);
 928         if (sig_monitor_init(
 929                 !json_object_object_get_ex(main_config, "trap-faults", &obj)
 930                         || json_object_get_boolean(obj)) < 0) {
 931                 ERROR("failed to initialise signal handlers");
 932                 return 1;
 933         }
 934
 935
 936         if (json_object_object_get_ex(main_config, "name", &obj)) {
 937                 verbose_set_name(json_object_get_string(obj), 0);
 938                 process_name_set_name(json_object_get_string(obj));
 939                 process_name_replace_cmdline(argv, json_object_get_string(obj));
 940         }
 941         afb_debug("main-args");
 942
 943         // --------- run -----------
 944         daemonize();
 945         INFO("running with pid %d", getpid());
 946
 947         /* set the daemon environment */
 948         setup_daemon();
 949
 950         afb_debug("main-start");
 951
 952         /* enter job processing */
 953         jobs_start(3, 0, 100, start, NULL);
 954         WARNING("hoops returned from jobs_enter! [report bug]");
 955         return 1;
 956 }
 957