X-Git-Url: https://code.citadel.org/?a=blobdiff_plain;f=appimage%2Fctdlvisor.c;h=041d1a52c552c16cda1a97866134d1b5d431a5aa;hb=HEAD;hp=cfeaf290a526f4cf767eedcbb9e64f18a8668c01;hpb=a21e4807aaeb75019e25e5b17cc304fe549691fd;p=citadel.git diff --git a/appimage/ctdlvisor.c b/appimage/ctdlvisor.c deleted file mode 100644 index cfeaf290a..000000000 --- a/appimage/ctdlvisor.c +++ /dev/null @@ -1,233 +0,0 @@ -// -// 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 -#include -#include -#include -#include -#include -#include -#include - -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); -}