#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 "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);
return hsrv;
}
+/*---------------------------------------------------------
+ | execute_command
+ |
+ +--------------------------------------------------------- */
+
+static void on_sigchld(int signum, siginfo_t *info, void *uctx)
+{
+ 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);
+ }
+ }
+}
+
+/*
+# @@ @
+# @p port
+# @t token
+*/
+
+#define SUBST_CHAR '@'
+#define SUBST_STR "@"
+
+static int instanciate_command_args()
+{
+ char *orig, *repl, *sub, *val, port[20];
+ int i, rc, r;
+ size_t s, l;
+
+ rc = snprintf(port, sizeof port, "%d", config->httpdPort);
+ if (rc < 0 || rc >= (int)(sizeof port))
+ return -1;
+
+ for (i = 0 ; (orig = config->exec[i]) ; i++) {
+ repl = 0;
+ s = 0;
+ for(;;) {
+ sub = strchrnul(orig, SUBST_CHAR);
+ l = sub - orig;
+ if (repl)
+ repl = mempcpy(repl, orig, l);
+ else
+ s += l;
+ if (!*sub) {
+ /* at end */
+ if (repl || orig == config->exec[i])
+ break;
+ repl = malloc(1 + s);
+ if (!repl)
+ return -1;
+ orig = config->exec[i];
+ config->exec[i] = repl;
+ repl[s] = 0;
+ } else {
+ r = 2;
+ switch(sub[1]) {
+ case 'p': val = port; break;
+ case 't': val = config->token ? : ""; break;
+ default: r = 1;
+ case SUBST_CHAR: val = SUBST_STR; break;
+ }
+ orig = &sub[r];
+ l = strlen(val);
+ if (repl)
+ repl = mempcpy(repl, val, l);
+ else
+ s += l;
+ }
+ }
+ }
+ return 0;
+}
+
+static int execute_command()
+{
+ struct sigaction siga;
+
+ /* 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;
+
+ /* makes arguments */
+ if (instanciate_command_args() >= 0) {
+ 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;
+}
+
/*---------------------------------------------------------
| main
| Parse option and launch action
int main(int argc, char *argv[])
{
struct afb_hsrv *hsrv;
- struct afb_config *config;
struct sd_event *eventloop;
LOGAUTH("afb-daemon");
+ sd_fds_init();
+
// ------------- Build session handler & init config -------
config = afb_config_parse_arguments(argc, argv);
- on_exit(closeSession, config);
+ atexit(exit_handler);
// ------------------ sanity check ----------------------------------------
if (config->httpdPort <= 0) {
exit(1);
}
- afb_session_init(config->nbSessionMax, config->cntxTimeout,
- config->token, afb_apis_count());
-
- afb_api_so_set_timeout(config->apiTimeout);
- if (config->ldpaths) {
- if (afb_api_so_add_pathset(config->ldpaths) < 0) {
- ERROR("initialisation of bindings within %s failed",
- config->ldpaths);
- exit(1);
- }
+ mkdir(config->workdir, S_IRWXU | S_IRGRP | S_IXGRP);
+ if (chdir(config->workdir) < 0) {
+ ERROR("Can't enter working dir %s", config->workdir);
+ exit(1);
}
- 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");
+ 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");
- 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)) {
+ afb_session_init(config->nbSessionMax, config->cntxTimeout, config->token, afb_apis_count());
+
+ 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)) {
ERROR("initialisation of cookies failed");
exit(1);
}
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;
if (config->background) {
// --------- in background mode -----------
INFO("entering background mode");
- daemonize(config);
+ daemonize();
} else {
// ---- in foreground mode --------------------
INFO("entering foreground mode");
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 the HTTP server */
+ if (!config->noHttpd) {
+ hsrv = start_http_server();
+ if (hsrv == NULL)
+ exit(1);
+ }
+
+ /* run the command */
+ if (execute_command() < 0)
+ exit(1);
+
+ /* signal that ready */
if (config->readyfd != 0) {
static const char readystr[] = "READY=1";
write(config->readyfd, readystr, sizeof(readystr) - 1);
close(config->readyfd);
}
+
// infinite loop
eventloop = afb_common_get_event_loop();
+ sd_notify(1, "READY=1");
for (;;)
sd_event_run(eventloop, 30000000);
Code Review / src / app-framework-binder.git / blobdiff