#include <unistd.h>
#include <fcntl.h>
#include <sys/stat.h>
+#include <sys/wait.h>
#include <systemd/sd-event.h>
+#include <systemd/sd-daemon.h>
+
+#include <afb/afb-binding.h>
#include "afb-config.h"
#include "afb-hswitch.h"
#include "afb-hsrv.h"
#include "afb-context.h"
#include "afb-hreq.h"
-#include "afb-sig-handler.h"
-#include "afb-thread.h"
+#include "sig-monitor.h"
+#include "jobs.h"
#include "afb-session.h"
#include "verbose.h"
#include "afb-common.h"
#include "afb-hook.h"
+#include "sd-fds.h"
-#include <afb/afb-binding.h>
+/*
+ if SELF_PGROUP == 0 the launched command is the group leader
+ if SELF_PGROUP != 0 afb-daemon is the group leader
+*/
+#define SELF_PGROUP 1
+
+static struct afb_config *config;
+static pid_t childpid;
/*----------------------------------------------------------
| helpers for handling list of arguments
}
/*----------------------------------------------------------
- | closeSession
- | try to close everything before leaving
+ | exit_handler
+ | Handles on exit specific actions
+--------------------------------------------------------- */
-static void closeSession(int status, void *data)
+static void exit_handler()
{
- /* struct afb_config *config = data; */
+ /* TODO: check whether using SIGHUP isn't better */
+ if (SELF_PGROUP)
+ killpg(0, SIGKILL);
+ else if (childpid > 0)
+ killpg(childpid, SIGKILL);
}
/*----------------------------------------------------------
| daemonize
| set the process in background
+--------------------------------------------------------- */
-static void daemonize(struct afb_config *config)
+static void daemonize()
{
int consoleFD;
int pid;
0, 0);
}
-static int init_http_server(struct afb_hsrv *hsrv, struct afb_config *config)
+static int init_http_server(struct afb_hsrv *hsrv)
{
if (!afb_hsrv_add_handler
(hsrv, config->rootapi, afb_hswitch_websocket_switch, NULL, 20))
return 1;
}
-static struct afb_hsrv *start_http_server(struct afb_config *config)
+static struct afb_hsrv *start_http_server()
{
int rc;
struct afb_hsrv *hsrv;
- if (afb_hreq_init_download_path("/tmp")) { /* TODO: sessiondir? */
- ERROR("unable to set the tmp directory");
+ if (afb_hreq_init_download_path(config->uploaddir)) {
+ ERROR("unable to set the upload directory %s", config->uploaddir);
return NULL;
}
}
if (!afb_hsrv_set_cache_timeout(hsrv, config->cacheTimeout)
- || !init_http_server(hsrv, config)) {
+ || !init_http_server(hsrv)) {
ERROR("initialisation of httpd failed");
afb_hsrv_put(hsrv);
return NULL;
}
- NOTICE("Waiting port=%d rootdir=%s", config->httpdPort,
- config->rootdir);
+ NOTICE("Waiting port=%d rootdir=%s", config->httpdPort, config->rootdir);
NOTICE("Browser URL= http:/*localhost:%d", config->httpdPort);
rc = afb_hsrv_start(hsrv, (uint16_t) config->httpdPort, 15);
}
/*---------------------------------------------------------
- | main
- | Parse option and launch action
+ | execute_command
+ |
+--------------------------------------------------------- */
-int main(int argc, char *argv[])
+static void on_sigchld(int signum, siginfo_t *info, void *uctx)
{
- struct afb_hsrv *hsrv;
- struct afb_config *config;
- struct sd_event *eventloop;
+ if (info->si_pid == childpid) {
+ switch (info->si_code) {
+ case CLD_EXITED:
+ case CLD_KILLED:
+ case CLD_DUMPED:
+ childpid = 0;
+ if (!SELF_PGROUP)
+ killpg(info->si_pid, SIGKILL);
+ waitpid(info->si_pid, NULL, 0);
+ exit(0);
+ }
+ }
+}
- LOGAUTH("afb-daemon");
+/*
+# @@ @
+# @p port
+# @t token
+*/
- // ------------- Build session handler & init config -------
- config = afb_config_parse_arguments(argc, argv);
- on_exit(closeSession, config);
+#define SUBST_CHAR '@'
+#define SUBST_STR "@"
+
+static char *instanciate_string(char *arg, const char *port, const char *token)
+{
+ char *resu, *it, *wr;
+ int chg, dif;
+
+ /* get the changes */
+ chg = 0;
+ dif = 0;
+ it = strchrnul(arg, SUBST_CHAR);
+ while (*it) {
+ switch(*++it) {
+ case 'p': chg++; dif += (int)strlen(port) - 2; break;
+ case 't': chg++; dif += (int)strlen(token) - 2; break;
+ case SUBST_CHAR: it++; chg++; dif--; break;
+ default: break;
+ }
+ it = strchrnul(it, SUBST_CHAR);
+ }
+
+ /* return arg when no change */
+ if (!chg)
+ return arg;
+
+ /* allocates the result */
+ resu = malloc((it - arg) + dif + 1);
+ if (!resu) {
+ ERROR("out of memory");
+ return NULL;
+ }
+
+ /* instanciate the arguments */
+ wr = resu;
+ for (;;) {
+ it = strchrnul(arg, SUBST_CHAR);
+ wr = mempcpy(wr, arg, it - arg);
+ if (!*it)
+ break;
+ switch(*++it) {
+ case 'p': wr = stpcpy(wr, port); break;
+ case 't': wr = stpcpy(wr, token); break;
+ default: *wr++ = SUBST_CHAR;
+ case SUBST_CHAR: *wr++ = *it;
+ }
+ arg = ++it;
+ }
+
+ *wr = 0;
+ return resu;
+}
+
+static int instanciate_environ(const char *port, const char *token)
+{
+ extern char **environ;
+ char *repl;
+ int i;
+
+ /* instanciate the environment */
+ for (i = 0 ; environ[i] ; i++) {
+ repl = instanciate_string(environ[i], port, token);
+ if (!repl)
+ return -1;
+ environ[i] = repl;
+ }
+ return 0;
+}
+
+static int instanciate_command_args(const char *port, const char *token)
+{
+ char *repl;
+ int i;
+
+ /* instanciate the arguments */
+ for (i = 0 ; config->exec[i] ; i++) {
+ repl = instanciate_string(config->exec[i], port, token);
+ if (!repl)
+ return -1;
+ config->exec[i] = repl;
+ }
+ return 0;
+}
+
+static int execute_command()
+{
+ struct sigaction siga;
+ char port[20];
+ int rc;
+
+ /* check whether a command is to execute or not */
+ if (!config->exec || !config->exec[0])
+ return 0;
+
+ if (SELF_PGROUP)
+ setpgid(0, 0);
+
+ /* install signal handler */
+ memset(&siga, 0, sizeof siga);
+ siga.sa_sigaction = on_sigchld;
+ siga.sa_flags = SA_SIGINFO;
+ sigaction(SIGCHLD, &siga, NULL);
+
+ /* fork now */
+ childpid = fork();
+ if (childpid)
+ return 0;
+
+ /* compute the string for port */
+ if (config->httpdPort)
+ rc = snprintf(port, sizeof port, "%d", config->httpdPort);
+ else
+ rc = snprintf(port, sizeof port, "%cp", SUBST_CHAR);
+ if (rc < 0 || rc >= (int)(sizeof port)) {
+ ERROR("port->txt failed");
+ }
+ else {
+ /* instanciate arguments and environment */
+ if (instanciate_command_args(port, config->token) >= 0
+ && instanciate_environ(port, config->token) >= 0) {
+ /* run */
+ if (!SELF_PGROUP)
+ setpgid(0, 0);
+ execv(config->exec[0], config->exec);
+ ERROR("can't launch %s: %m", config->exec[0]);
+ }
+ }
+ exit(1);
+ return -1;
+}
+
+/*---------------------------------------------------------
+ | job for starting the daemon
+ +--------------------------------------------------------- */
+
+static void start(int signum)
+{
+ struct afb_hsrv *hsrv;
// ------------------ sanity check ----------------------------------------
if (config->httpdPort <= 0) {
ERROR("no port is defined");
- exit(1);
+ goto error;
}
- afb_session_init(config->nbSessionMax, config->cntxTimeout,
- config->token, afb_apis_count());
+ mkdir(config->workdir, S_IRWXU | S_IRGRP | S_IXGRP);
+ if (chdir(config->workdir) < 0) {
+ ERROR("Can't enter working dir %s", config->workdir);
+ goto error;
+ }
afb_api_so_set_timeout(config->apiTimeout);
start_list(config->dbus_clients, afb_api_dbus_add_client, "the afb-dbus client");
start_list(config->ws_clients, afb_api_ws_add_client, "the afb-websocket client");
start_list(config->ldpaths, afb_api_so_add_pathset, "the binding path set");
start_list(config->so_bindings, afb_api_so_add_binding, "the binding");
+
+ afb_session_init(config->nbSessionMax, config->cntxTimeout, config->token);
+
start_list(config->dbus_servers, afb_api_dbus_add_server, "the afb-dbus service");
start_list(config->ws_servers, afb_api_ws_add_server, "the afb-websocket service");
- if (!afb_hreq_init_cookie
- (config->httpdPort, config->rootapi, config->cntxTimeout)) {
+ if (!afb_hreq_init_cookie(config->httpdPort, config->rootapi, config->cntxTimeout)) {
ERROR("initialisation of cookies failed");
- exit(1);
+ goto error;
}
- if (afb_sig_handler_init() < 0) {
- ERROR("failed to initialise signal handlers");
- return 1;
- }
- // if directory does not exist createit
- mkdir(config->rootdir, O_RDWR | S_IRWXU | S_IRGRP);
+ // set the root dir
if (afb_common_rootdir_set(config->rootdir) < 0) {
ERROR("failed to set common root directory");
- return 1;
+ goto error;
}
- if (afb_thread_init(3, 1, 20) < 0) {
- ERROR("failed to initialise threading");
- return 1;
+ DEBUG("Init config done");
+
+ /* install trace of requests */
+ if (config->tracereq)
+ afb_hook_req_create(NULL, NULL, NULL, config->tracereq, NULL, NULL);
+
+ /* start the services */
+ if (afb_apis_start_all_services(1) < 0)
+ goto error;
+
+ /* start the HTTP server */
+ if (!config->noHttpd) {
+ hsrv = start_http_server();
+ if (hsrv == NULL)
+ goto error;
}
+
+ /* run the command */
+ if (execute_command() < 0)
+ goto error;
+
+ /* ready */
+ sd_notify(1, "READY=1");
+ return;
+error:
+ exit(1);
+}
+/*---------------------------------------------------------
+ | main
+ | Parse option and launch action
+ +--------------------------------------------------------- */
+
+int main(int argc, char *argv[])
+{
// let's run this program with a low priority
nice(20);
- // ------------------ Finaly Process Commands -----------------------------
- // let's not take the risk to run as ROOT
- //if (getuid() == 0) goto errorNoRoot;
+ LOGAUTH("afb-daemon");
- DEBUG("Init config done");
+ sd_fds_init();
+
+ // ------------- Build session handler & init config -------
+ config = afb_config_parse_arguments(argc, argv);
// --------- run -----------
if (config->background) {
// --------- in background mode -----------
INFO("entering background mode");
- daemonize(config);
+ daemonize();
} else {
// ---- in foreground mode --------------------
INFO("entering foreground mode");
}
+ /* handle groups */
+ atexit(exit_handler);
+
/* ignore any SIGPIPE */
signal(SIGPIPE, SIG_IGN);
- /* install trace of requests */
- if (config->tracereq)
- afb_hook_req_create(NULL, NULL, NULL, config->tracereq, NULL, NULL);
-
- /* start the HTTP server */
- hsrv = start_http_server(config);
- if (hsrv == NULL)
- exit(1);
-
- /* start the services */
- if (afb_apis_start_all_services(1) < 0)
- exit(1);
+ /* start */
+ if (sig_monitor_init() < 0) {
+ ERROR("failed to initialise signal handlers");
+ return 1;
+ }
- if (config->readyfd != 0) {
- static const char readystr[] = "READY=1";
- write(config->readyfd, readystr, sizeof(readystr) - 1);
- close(config->readyfd);
+ /* init job processing */
+ if (jobs_init(3, 1, 20) < 0) {
+ ERROR("failed to initialise threading");
+ return 1;
}
- // infinite loop
- eventloop = afb_common_get_event_loop();
- for (;;)
- sd_event_run(eventloop, 30000000);
- WARNING("hoops returned from infinite loop [report bug]");
+ /* queue the start job */
+ if (jobs_queue0(NULL, 0, start) < 0) {
+ ERROR("failed to start runnning jobs");
+ return 1;
+ }
+ /* turn as processing thread */
+ jobs_add_me();
+ WARNING("hoops returned from jobs_add_me! [report bug]");
return 0;
}
+
Code Review / src / app-framework-binder.git / blobdiff