-//
// This is a supervisor program that handles start/stop/restart of
// the various Citadel System components, when we are running on
// an AppImage instance.
// This program is open source software. It runs great on the
// Linux operating system (and probably elsewhere). You can use,
// copy, and run it under the terms of the GNU General Public
-// License version 3. Richard Stallman is an asshole communist.
+// License version 3.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
#include <sys/types.h>
#include <sys/stat.h>
-void main_loop(void);
-void run_in_foreground(void);
-
-char *data_directory = "/usr/local/citadel";
-char *http_port = "80";
-char *https_port = "443";
pid_t citserver_pid;
pid_t webcit_pid;
pid_t webcits_pid;
int shutting_down = 0;
-
+// Call this instead of exit() just for common diagnostics etc.
void ctdlvisor_exit(int code) {
printf("ctdlvisor: exit code %d\n", code);
exit(code);
}
+// Interrupting this program with a signal will begin an orderly shutdown.
void signal_handler(int signal) {
fprintf(stderr, "ctdlvisor: caught signal %d\n", signal);
else {
what_exited = "unknown";
}
- fprintf(stderr, "ctdlvisor: pid=%d (%s) exited, status=%d, exitcode=%d\n", who_exited, what_exited, status, WEXITSTATUS(status));
+ if (who_exited >= 0) {
+ fprintf(stderr, "ctdlvisor: %d (%s) ended, status=%d\n", who_exited, what_exited, status);
+ }
} while (who_exited >= 0);
-
ctdlvisor_exit(0);
}
-
void detach_from_tty(void) {
signal(SIGHUP, SIG_IGN);
signal(SIGINT, SIG_IGN);
signal(SIGQUIT, SIG_IGN);
- setsid();
+ setsid(); // become our own process group leader
umask(0);
if ( (freopen("/dev/null", "r", stdin) != stdin) ||
(freopen("/dev/null", "w", stdout) != stdout) ||
pid_t start_citadel() {
char bin[1024];
+ char backtrace_filename[PATH_MAX];
sprintf(bin, "%s/usr/local/citadel/citserver", getenv("APPDIR"));
pid_t pid = fork();
if (pid == 0) {
- fprintf(stderr, "ctdlvisor: executing %s\n", bin);
+ fprintf(stderr, "ctdlvisor: executing %s with data directory %s\n", bin, getenv("CTDL_DIR"));
detach_from_tty();
- execlp(bin, "citserver", "-x9", "-h", data_directory, NULL);
+ sprintf(backtrace_filename, "/tmp/citserver-backtrace.%d", getpid());
+ execlp(bin, "citserver", "-x9", "-h", getenv("CTDL_DIR"), "-b", backtrace_filename, NULL);
exit(errno);
}
else {
+ fprintf(stderr, "ctdlvisor: citserver running on pid=%d\n", pid);
return(pid);
}
}
if (pid == 0) {
fprintf(stderr, "ctdlvisor: executing %s\n", bin);
detach_from_tty();
- execlp(bin, "webcit", "-x9", wchome, "-p", http_port, "uds", data_directory, NULL);
+ execlp(bin, "webcit", "-x9", wchome, "-p", getenv("HTTP_PORT"), "uds", getenv("CTDL_DIR"), NULL);
exit(errno);
}
else {
+ fprintf(stderr, "ctdlvisor: webcit (HTTP) running on pid=%d\n", pid);
return(pid);
}
}
if (pid == 0) {
fprintf(stderr, "ctdlvisor: executing %s\n", bin);
detach_from_tty();
- execlp(bin, "webcit", "-x9", wchome, "-s", "-p", https_port, "uds", data_directory, NULL);
+ execlp(bin, "webcit", "-x9", wchome, "-s", "-p", getenv("HTTPS_PORT"), "uds", getenv("CTDL_DIR"), NULL);
exit(errno);
}
else {
+ fprintf(stderr, "ctdlvisor: webcit (HTTPS) running on pid=%d\n", pid);
return(pid);
}
}
-static char *usage =
- "ctdlvisor: usage: ctdlvisor [-h data_directory] [-p http_port] [-s https_port] command\n"
- " 'command' must be one of:\n"
- " run - start Citadel services in the foreground without detaching\n"
- " install - deploy systemd unit files for automatic startup at boot\n"
- " upgrade - check for new version of the software\n"
- " test - check this appimage for compatibility with your system\n"
-;
-
-int main(int argc, char **argv) {
- int c;
-
- while ((c = getopt (argc, argv, "h:p:s:")) != -1) switch(c) {
- case 'h':
- data_directory = optarg;
- break;
- case 'p':
- http_port = optarg;
- break;
- case 's':
- https_port = optarg;
- break;
- default:
- fprintf(stderr, "%s", usage);
- exit(1);
- }
-
-
- if (argc != optind+1) {
- fprintf(stderr, "%s", usage);
- exit(1);
- }
-
- if (!strcasecmp(argv[optind], "run")) {
- run_in_foreground();
- }
- else if (!strcasecmp(argv[optind], "install")) {
- fprintf(stderr, "oops, this is not implemented yet\n");
- }
- else if (!strcasecmp(argv[optind], "upgrade")) {
- fprintf(stderr, "oops, this is not implemented yet\n");
- }
- else if (!strcasecmp(argv[optind], "test")) {
- fprintf(stderr, "oops, this is not implemented yet\n");
- }
- else {
- fprintf(stderr, "%s", usage);
- exit(1);
- }
-
- exit(0);
-}
-
-
-void run_in_foreground(void) {
- fprintf(stderr, "ctdlvisor: Welcome to the Citadel System, brought to you using AppImage.\n");
- fprintf(stderr, "ctdlvisor: LD_LIBRARY_PATH = %s\n", getenv("LD_LIBRARY_PATH"));
- fprintf(stderr, "ctdlvisor: PATH = %s\n", getenv("PATH"));
- fprintf(stderr, "ctdlvisor: APPDIR = %s\n", getenv("APPDIR"));
- fprintf(stderr, "ctdlvisor: data directory = %s\n", data_directory);
- fprintf(stderr, "ctdlvisor: HTTP port = %s\n", http_port);
- fprintf(stderr, "ctdlvisor: HTTPS port = %s\n", https_port);
-
- if (access(data_directory, R_OK|W_OK|X_OK)) {
- fprintf(stderr, "ctdlvisor: %s: %s\n", data_directory, strerror(errno));
- exit(errno);
- }
-
- signal(SIGTERM, signal_handler);
- signal(SIGHUP, signal_handler);
- signal(SIGINT, signal_handler);
- signal(SIGQUIT, signal_handler);
-
- citserver_pid = start_citadel();
- webcit_pid = start_webcit();
- webcits_pid = start_webcits();
-
- main_loop();
- exit(0);
-}
-
-
void main_loop(void) {
int status;
pid_t who_exited;
int citserver_exit_code = 0;
do {
- fprintf(stderr, "ctdlvisor: waiting for any child process to exit...\n");
who_exited = waitpid(-1, &status, 0);
fprintf(stderr, "ctdlvisor: pid=%d exited, status=%d, exitcode=%d\n", who_exited, status, WEXITSTATUS(status));
// If it crashes, however, we will start it back up.
if (who_exited == citserver_pid) {
citserver_exit_code = WEXITSTATUS(status);
- if (citserver_exit_code == 0) {
+ if ((WIFEXITED(status)) && (citserver_exit_code == 0)) {
fprintf(stderr, "ctdlvisor: citserver exited normally - ending AppImage session\n");
shutting_down = 1;
kill(webcit_pid, SIGTERM);
kill(webcits_pid, SIGTERM);
}
- else if ((citserver_exit_code >= 101) && (citserver_exit_code <= 109)) {
+ else if ((WIFEXITED(status)) && (citserver_exit_code >= 101) && (citserver_exit_code <= 109)) {
fprintf(stderr, "ctdlvisor: citserver exited intentionally - ending AppImage session\n");
shutting_down = 1;
kill(webcit_pid, SIGTERM);
kill(webcits_pid, SIGTERM);
}
else {
+ if (WIFSIGNALED(status)) {
+ fprintf(stderr, "ctdlvisor: citserver crashed on signal %d\n", WTERMSIG(status));
+ }
citserver_pid = start_citadel();
}
}
sleep(1);
} while (who_exited >= 0);
-
ctdlvisor_exit(citserver_exit_code);
}
+
+
+int main(int argc, char **argv) {
+ int a;
+ int migrate_mode = 0;
+
+ if (getenv("APPDIR") == NULL) {
+ fprintf(stderr, "ctdlvisor: APPDIR is not set. This program must be run from within an AppImage.\n");
+ ctdlvisor_exit(1);
+ }
+
+ /* parse command-line arguments */
+ while ((a=getopt(argc, argv, "cm")) != EOF) switch(a) {
+
+ // test this binary for compatibility and exit
+ case 'c':
+ fprintf(stderr, "%s: binary compatibility confirmed\n", argv[0]);
+ exit(0);
+ break;
+
+ // run ctdlmigrate only
+ case 'm':
+ migrate_mode = 1;
+ break;
+
+ // any other parameter makes it crash and burn
+ default:
+ fprintf(stderr, "usage\n");
+ exit(1);
+ }
+
+ fprintf(stderr, "ctdlvisor: Welcome to the Citadel System, brought to you using AppImage.\n");
+ fprintf(stderr, "ctdlvisor: LD_LIBRARY_PATH = %s\n", getenv("LD_LIBRARY_PATH"));
+ fprintf(stderr, "ctdlvisor: PATH = %s\n", getenv("PATH"));
+ fprintf(stderr, "ctdlvisor: APPDIR = %s\n", getenv("APPDIR"));
+ fprintf(stderr, "ctdlvisor: data directory = %s\n", getenv("CTDL_DIR"));
+ fprintf(stderr, "ctdlvisor: HTTP port = %s\n", getenv("HTTP_PORT"));
+ fprintf(stderr, "ctdlvisor: HTTPS port = %s\n", getenv("HTTPS_PORT"));
+
+ if (access(getenv("CTDL_DIR"), R_OK|W_OK|X_OK)) {
+ fprintf(stderr, "ctdlvisor: %s: %s\n", getenv("CTDL_DIR"), strerror(errno));
+ ctdlvisor_exit(errno);
+ }
+
+ signal(SIGHUP, signal_handler);
+
+ // "migrate mode" means we just start the server and then run ctdlmigrate interactively.
+ if (migrate_mode) {
+ citserver_pid = start_citadel();
+ fprintf(stderr, "ctdlvisor: waiting a moment for citserver to initialize...\n");
+ sleep(5);
+ char bin[1024];
+ sprintf(bin, "%s/usr/local/citadel/ctdlmigrate", getenv("APPDIR"));
+ system(bin);
+ kill(citserver_pid, SIGTERM);
+ }
+
+ // Otherwise, it's just a normal happy day in Citadel land.
+ else {
+ signal(SIGTERM, signal_handler);
+ signal(SIGINT, signal_handler);
+ signal(SIGQUIT, signal_handler);
+
+ citserver_pid = start_citadel();
+ webcit_pid = start_webcit();
+ webcits_pid = start_webcits();
+
+ main_loop();
+ }
+
+ ctdlvisor_exit(0);
+}
projects / citadel.git / blobdiff