X-Git-Url: https://code.citadel.org/?a=blobdiff_plain;f=appimage%2Fctdlvisor.c;h=6784f2cc5d042998ca55eb2f8068dcbca87be656;hb=726b17052194381cb213317808ccba1f41194285;hp=3884f7072b614086ba8f7e2bcf9ce0da9e4e9cd8;hpb=fcc3e1f2fbb486769d536b4029c60e17ab1e43fe;p=citadel.git diff --git a/appimage/ctdlvisor.c b/appimage/ctdlvisor.c index 3884f7072..6784f2cc5 100644 --- a/appimage/ctdlvisor.c +++ b/appimage/ctdlvisor.c @@ -1,4 +1,3 @@ -// // This is a supervisor program that handles start/stop/restart of // the various Citadel System components, when we are running on // an AppImage instance. @@ -8,7 +7,7 @@ // 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 @@ -24,25 +23,22 @@ #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; 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); @@ -74,20 +70,20 @@ void signal_handler(int 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) || @@ -103,12 +99,13 @@ pid_t start_citadel() { 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); + execlp(bin, "citserver", "-x9", "-h", getenv("CTDL_DIR"), NULL); exit(errno); } else { + fprintf(stderr, "ctdlvisor: citserver running on pid=%d\n", pid); return(pid); } } @@ -123,10 +120,11 @@ pid_t start_webcit() { 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); } } @@ -141,91 +139,22 @@ pid_t start_webcits() { 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: 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(); - 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)); @@ -233,19 +162,22 @@ void main_loop(void) { // 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(); } } @@ -258,6 +190,77 @@ void main_loop(void) { 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); +}