+++ /dev/null
-//
-// This is a supervisor program that handles start/stop/restart of
-// the various Citadel System components, when we are running on
-// an AppImage instance.
-//
-// Copyright (c) 2021 by the citadel.org team
-//
-// 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.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU General Public License for more details.
-
-
-#include <stdlib.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <sys/wait.h>
-#include <errno.h>
-#include <signal.h>
-#include <string.h>
-#include <limits.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;
-
-
-void signal_handler(int signal) {
- fprintf(stderr, "ctdlvisor: caught signal %d\n", signal);
-
- int status;
- pid_t who_exited;
- char *what_exited = NULL;
-
- do {
- fprintf(stderr, "ctdlvisor: waiting for any child process to exit...\n");
- who_exited = waitpid(-1, &status, 0);
- if (who_exited == citserver_pid) {
- what_exited = "Citadel Server";
- }
- else if (who_exited == webcit_pid) {
- what_exited = "WebCit HTTP";
- }
- else if (who_exited == webcits_pid) {
- what_exited = "WebCit HTTPS";
- }
- else {
- what_exited = "unknown";
- }
- fprintf(stderr, "ctdlvisor: pid=%d (%s) exited, status=%d, exitcode=%d\n", who_exited, what_exited, status, WEXITSTATUS(status));
- } while (who_exited >= 0);
-
- printf("ctdlvisor: exiting from signal catcher.\n");
- exit(0);
-}
-
-
-
-pid_t start_citadel() {
- char bin[1024];
- sprintf(bin, "%s/usr/local/citadel/citserver", getenv("APPDIR"));
- pid_t pid = fork();
- if (pid == 0) {
- fprintf(stderr, "ctdlvisor: executing %s\n", bin);
- close(0); close(1); close(2);
- execlp(bin, "citserver", "-x9", "-h", data_directory, NULL);
- exit(errno);
- }
- else {
- return(pid);
- }
-}
-
-
-pid_t start_webcit() {
- char bin[1024];
- sprintf(bin, "%s/usr/local/webcit/webcit", getenv("APPDIR"));
- char wchome[1024];
- sprintf(wchome, "-h%s/usr/local/webcit", getenv("APPDIR"));
- pid_t pid = fork();
- if (pid == 0) {
- fprintf(stderr, "ctdlvisor: executing %s\n", bin);
- close(0); close(1); close(2);
- execlp(bin, "webcit", "-x9", wchome, "-p", http_port, "uds", data_directory, NULL);
- exit(errno);
- }
- else {
- return(pid);
- }
-}
-
-
-pid_t start_webcits() {
- char bin[1024];
- sprintf(bin, "%s/usr/local/webcit/webcit", getenv("APPDIR"));
- char wchome[1024];
- sprintf(wchome, "-h%s/usr/local/webcit", getenv("APPDIR"));
- pid_t pid = fork();
- if (pid == 0) {
- fprintf(stderr, "ctdlvisor: executing %s\n", bin);
- close(0); close(1); close(2);
- execlp(bin, "webcit", "-x9", wchome, "-s", "-p", https_port, "uds", data_directory, NULL);
- exit(errno);
- }
- else {
- return(pid);
- }
-}
-
-
-static char *usage =
- "ctdlvisor: usage: ctdlvisor [-h data_directory] [-p http_port] [-s https_port] command\n"
- " 'command' must be one of: run, install, start, stop\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 {
- 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();
-}
-
-
-void main_loop(void) {
- int status;
- pid_t who_exited;
- int shutting_down = 0;
- 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));
-
- // A *deliberate* exit of citserver will cause ctdlvisor to shut the whole AppImage down.
- // 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) {
- 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)) {
- fprintf(stderr, "ctdlvisor: citserver exited intentionally - ending AppImage session\n");
- shutting_down = 1;
- kill(webcit_pid, SIGTERM);
- kill(webcits_pid, SIGTERM);
- }
- else {
- citserver_pid = start_citadel();
- }
- }
-
- // WebCit processes are restarted if they exit for any reason.
- if ((who_exited == webcit_pid) && (!shutting_down)) webcit_pid = start_webcit();
- if ((who_exited == webcits_pid) && (!shutting_down)) webcits_pid = start_webcits();
-
- // If we somehow end up in an endless loop, at least slow it down.
- sleep(1);
-
- } while (who_exited >= 0);
-
- printf("ctdlvisor: exit code %d\n", citserver_exit_code);
- exit(citserver_exit_code);
-}
projects / citadel.git / blobdiff