#include <string.h>
#include <limits.h>
+void main_loop(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", 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];
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);
- perror("execlp");
exit(errno);
}
else {
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);
- perror("execlp");
exit(errno);
}
else {
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);
- perror("execlp");
exit(errno);
}
else {
int main(int argc, char **argv) {
- pid_t citserver_pid;
- pid_t webcit_pid;
- pid_t webcits_pid;
- int shutting_down = 0;
- int status;
- pid_t who_exited;
int c;
while ((c = getopt (argc, argv, "h:p:s:")) != -1) switch(c) {
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);
// 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) {
- if (WEXITSTATUS(status) == 0) {
+ 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 ((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) && (shutting_down == 0));
+ } while (who_exited >= 0);
- printf("ctdlvisor: exiting.\n");
- exit(0);
+ printf("ctdlvisor: exit code %d\n", citserver_exit_code);
+ exit(citserver_exit_code);
}