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#include <sys/stat.h> |
#include <sys/stat.h> |
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#include <stdlib.h> |
#include <stdlib.h> |
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#include <stdio.h> |
#include <stdio.h> |
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#include <fcntl.h> |
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#include <unistd.h> |
#include <unistd.h> |
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#include <sys/socket.h> |
#include <sys/socket.h> |
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#include <netinet/in.h> |
#include <netinet/in.h> |
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#include <arpa/inet.h> |
#include <arpa/inet.h> |
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#include <signal.h> |
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#include <string.h> |
#include <string.h> |
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#include <errno.h> |
#include <errno.h> |
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|
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#include "log.h" |
#include "log.h" |
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#include "misc.h" |
#include "misc.h" |
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#include "options.h" |
#include "options.h" |
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#include "sighndl.h" |
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|
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void |
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daemon_mode (void) |
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{ |
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int pid; |
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int f; |
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|
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pid = fork (); |
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if (pid == 0) |
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{ |
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log_daemon(); |
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log (LOG_NOTICE, gettext("%s daemon started\n"), PACKAGE_STRING); |
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f = open ("/dev/null", O_RDWR); |
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if (f < 0) |
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log (LOG_WARNING, gettext ("Unable to open /dev/null: %s (%d)\n"), |
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strerror (errno), errno); |
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else |
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{ |
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if (dup2 (f, 0) < 0) |
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log (LOG_WARNING, gettext ("Error calling dup2 stdin: %s (%d)\n"), |
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strerror (errno), errno); |
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if (dup2 (f, 1) < 0) |
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log (LOG_WARNING, |
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gettext ("Error calling dup2 stdout: %s (%d)\n"), |
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strerror (errno), errno); |
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if (dup2 (f, 2) < 0) |
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log (LOG_WARNING, |
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gettext ("Error calling dup2 stderr: %s (%d)\n"), |
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strerror (errno), errno); |
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if (close (f) < 0) |
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log (LOG_WARNING, |
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gettext ("Error calling close /dev/null: %s (%d)\n"), |
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strerror (errno), errno); |
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} |
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if (setsid () < 0) |
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log (LOG_WARNING, gettext ("Error calling setsid: %s (%d)\n"), |
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strerror (errno), errno); |
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} |
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else if (pid > 0) |
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{ |
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exit (0); |
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} |
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else |
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{ |
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log (LOG_ERR, gettext ("Unable to fork: %s (%d)\n"), strerror (errno), |
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errno); |
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exit (1); |
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} |
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} |
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void |
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handle_signals (void) |
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{ |
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signal (SIGINT, sig_exit); |
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signal (SIGTERM, sig_exit); |
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if (!PARAM_DAEMON) |
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signal (SIGHUP, sig_exit); |
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} |
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int |
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running_from_pidfile (void) |
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{ |
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int fd; |
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pid_t pid; |
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int r; |
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char pid_string[15]; |
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fd = open (PARAM_PID_FILE, O_RDONLY, 0644); |
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|
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if (fd != -1) |
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{ |
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r = read (fd, pid_string, sizeof(pid_string) - 1); |
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pid_string[r] = '\0'; |
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pid = atoi (pid_string); |
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close (fd); |
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if (pid != 0 && kill (pid, 0) == -1) |
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{ |
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/* we can create a pidfile now */ |
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log (LOG_WARNING, gettext ("Removing stale pid file %s.\n"), PARAM_PID_FILE); |
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remove_pidfile (); |
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return 0; |
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} |
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else |
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{ |
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if(pid) |
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{ |
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log (LOG_ERR, gettext("%s is already running with pid %d.\n"), |
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PACKAGE, pid); |
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return 1; /* we're already running */ |
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} |
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else |
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return 0; |
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} |
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} |
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close (fd); |
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return 0; |
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} |
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int |
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write_pidfile (void) |
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{ |
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int fd; |
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char pid_string[15]; |
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fd = open (PARAM_PID_FILE, O_RDWR | O_CREAT, 0644); |
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if( fd != -1) |
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{ |
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snprintf (pid_string, sizeof(pid_string), "%d\n", getpid ()); |
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write (fd, pid_string, strlen (pid_string)); |
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close (fd); |
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return 1; |
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} |
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else |
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{ |
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log (LOG_WARNING, gettext ("Can't create pid file %s: %s (%d).\n"), |
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PARAM_PID_FILE, strerror(errno), errno); |
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return 0; |
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} |
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} |
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int |
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remove_pidfile (void) |
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{ |
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if (unlink (PARAM_PID_FILE)) |
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{ |
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log (LOG_ERR, gettext("Can't remove %s: %s (%d).\n"), |
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PARAM_PID_FILE, strerror(errno), errno); |
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return 0; /* cannot remove pidfile */ |
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} |
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return 1; |
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} |
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|
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int |
int |
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launch_ip_up (if_name, if_addr, dns, domain, mtu) |
launch_ip_up (if_name, if_addr, dns, domain, mtu) |
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int pid; |
int pid; |
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struct stat st; |
struct stat st; |
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|
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snprintf (env_name, sizeof (env_name) - 1, "IFNAME=%s", if_name); |
snprintf (env_name, sizeof (env_name), "IFNAME=%s", if_name); |
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snprintf (env_addr, sizeof (env_addr) - 1, "ADDRESS=%s", |
snprintf (env_addr, sizeof (env_addr), "ADDRESS=%s",inet_ntoa (if_addr)); |
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inet_ntoa (if_addr)); |
snprintf (env_dns, sizeof (env_dns), "DNS=%s", inet_ntoa (dns)); |
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snprintf (env_dns, sizeof (env_dns) - 1, "DNS=%s", inet_ntoa (dns)); |
snprintf (env_domain, sizeof (env_domain), "DOMAIN=%s", domain); |
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snprintf (env_domain, sizeof (env_domain) - 1, "DOMAIN=%s", domain); |
snprintf (env_mtu, sizeof (env_mtu), "MTU=%d", mtu); |
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snprintf (env_mtu, sizeof (env_mtu) - 1, "MTU=%d", mtu); |
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if (PARAM_IP_UP && !stat (PARAM_IP_UP, &st)) |
if (PARAM_IP_UP && !stat (PARAM_IP_UP, &st)) |
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{ |
{ |
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int pid; |
int pid; |
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struct stat st; |
struct stat st; |
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|
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snprintf (name, sizeof (name) - 1, "IFNAME=%s", if_name); |
snprintf (name, sizeof (name), "IFNAME=%s", if_name); |
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|
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if (PARAM_IP_DOWN && !stat (PARAM_IP_DOWN, &st)) |
if (PARAM_IP_DOWN && !stat (PARAM_IP_DOWN, &st)) |
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{ |
{ |