diff options
Diffstat (limited to 'src/sig_handler.c')
-rw-r--r-- | src/sig_handler.c | 152 |
1 files changed, 0 insertions, 152 deletions
diff --git a/src/sig_handler.c b/src/sig_handler.c deleted file mode 100644 index 79e2a2d..0000000 --- a/src/sig_handler.c +++ /dev/null @@ -1,152 +0,0 @@ -/* - * rharchive - * - * rharchive is a simple tcp connection proxy which combines the - * features of rinetd and 6tunnel. rharchive supports IPv4 and - * IPv6 and also supports connections from IPv6 to IPv4 - * endpoints and vice versa. - * - * - * Copyright (C) 2010-2011 Christian Pointner <equinox@helsinki.at> - * - * This file is part of rharchive. - * - * rharchive is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 3 of the License, or - * any later version. - * - * rharchive 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. - * - * You should have received a copy of the GNU General Public License - * along with rharchive. If not, see <http://www.gnu.org/licenses/>. - */ - -#include "datatypes.h" - -#include "log.h" - -#include "sig_handler.h" -#include <errno.h> - -#include <signal.h> -#include <unistd.h> -#include <fcntl.h> - -static int sig_pipe_fds[2]; - -static void sig_handler(int sig) -{ - sigset_t set; - int ret = read(sig_pipe_fds[0], &set, sizeof(sigset_t)); - if(ret != sizeof(sigset_t)) - sigemptyset(&set); - - sigaddset(&set, sig); - ret = write(sig_pipe_fds[1], &set, sizeof(sigset_t)); -} - - -int signal_init() -{ - if(pipe(sig_pipe_fds)) { - log_printf(ERROR, "signal handling init failed (pipe error: %s)", strerror(errno)); - return -1; - } - - int i; - for(i=0; i<2; ++i) { - int fd_flags = fcntl(sig_pipe_fds[i], F_GETFL); - if(fd_flags == -1) { - log_printf(ERROR, "signal handling init failed (pipe fd[%d] read flags error: %s)", i, strerror(errno)); - return -1; - } - if(fcntl(sig_pipe_fds[i], F_SETFL, fd_flags | O_NONBLOCK) == -1){ - log_printf(ERROR, "signal handling init failed (pipe fd[%d] write flags error: %s)", i, strerror(errno)); - return -1; - } - } - - struct sigaction act, act_ign; - act.sa_handler = sig_handler; - sigfillset(&act.sa_mask); - act.sa_flags = 0; - act_ign.sa_handler = SIG_IGN; - sigfillset(&act_ign.sa_mask); - act_ign.sa_flags = 0; - - if((sigaction(SIGINT, &act, NULL) < 0) || - (sigaction(SIGQUIT, &act, NULL) < 0) || - (sigaction(SIGTERM, &act, NULL) < 0) || - (sigaction(SIGHUP, &act, NULL) < 0) || - (sigaction(SIGUSR1, &act, NULL) < 0) || - (sigaction(SIGUSR2, &act, NULL) < 0) || - (sigaction(SIGPIPE, &act_ign, NULL) < 0)) { - - log_printf(ERROR, "signal handling init failed (sigaction error: %s)", strerror(errno)); - close(sig_pipe_fds[0]); - close(sig_pipe_fds[1]); - } - - return sig_pipe_fds[0]; -} - -int signal_handle() -{ - sigset_t set, oldset, tmpset; - - sigemptyset(&tmpset); - sigaddset(&tmpset, SIGINT); - sigaddset(&tmpset, SIGQUIT); - sigaddset(&tmpset, SIGTERM); - sigaddset(&tmpset, SIGHUP); - sigaddset(&tmpset, SIGUSR1); - sigaddset(&tmpset, SIGUSR2); - sigprocmask(SIG_BLOCK, &tmpset, &oldset); - - int ret = read(sig_pipe_fds[0], &set, sizeof(sigset_t)); - if(ret != sizeof(sigset_t)) - sigemptyset(&set); - - int return_value = 0; - int sig; - for(sig=1; sig < NSIG; ++sig) { - if(sigismember(&set, sig)) { - switch(sig) { - case SIGINT: log_printf(NOTICE, "SIG-Int caught, exitting"); return_value = 1; break; - case SIGQUIT: log_printf(NOTICE, "SIG-Quit caught, exitting"); return_value = 1; break; - case SIGTERM: log_printf(NOTICE, "SIG-Term caught, exitting"); return_value = 1; break; - case SIGHUP: log_printf(NOTICE, "SIG-Hup caught"); return_value = 2; break; - case SIGUSR1: log_printf(NOTICE, "SIG-Usr1 caught"); return_value = 3; break; - case SIGUSR2: log_printf(NOTICE, "SIG-Usr2 caught"); return_value = 4; break; - default: log_printf(WARNING, "unknown signal %d caught, ignoring", sig); break; - } - sigdelset(&set, sig); - } - } - - sigprocmask(SIG_SETMASK, &oldset, NULL); - return return_value; -} - -void signal_stop() -{ - struct sigaction act; - act.sa_handler = SIG_DFL; - sigemptyset(&act.sa_mask); - act.sa_flags = 0; - - sigaction(SIGINT, &act, NULL); - sigaction(SIGQUIT, &act, NULL); - sigaction(SIGTERM, &act, NULL); - sigaction(SIGHUP, &act, NULL); - sigaction(SIGUSR1, &act, NULL); - sigaction(SIGUSR2, &act, NULL); - sigaction(SIGPIPE, &act, NULL); - - close(sig_pipe_fds[0]); - close(sig_pipe_fds[1]); -} |