Merge daemon.c into common.c

[apps/pfixtools.git] / daemon.c

diff --git a/daemon.c b/daemon.c
deleted file mode 100644 (file)
index 1a6debb..0000000
--- a/daemon.c
+++ /dev/null
@@ -1,177 +0,0 @@
-/******************************************************************************/
-/*          pfixtools: a collection of postfix related tools                  */
-/*          ~~~~~~~~~                                                         */
-/*  ________________________________________________________________________  */
-/*                                                                            */
-/*  Redistribution and use in source and binary forms, with or without        */
-/*  modification, are permitted provided that the following conditions        */
-/*  are met:                                                                  */
-/*                                                                            */
-/*  1. Redistributions of source code must retain the above copyright         */
-/*     notice, this list of conditions and the following disclaimer.          */
-/*  2. Redistributions in binary form must reproduce the above copyright      */
-/*     notice, this list of conditions and the following disclaimer in the    */
-/*     documentation and/or other materials provided with the distribution.   */
-/*  3. The names of its contributors may not be used to endorse or promote    */
-/*     products derived from this software without specific prior written     */
-/*     permission.                                                            */
-/*                                                                            */
-/*  THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND   */
-/*  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE     */
-/*  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR        */
-/*  PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS    */
-/*  BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR    */
-/*  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF      */
-/*  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS  */
-/*  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN   */
-/*  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)   */
-/*  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF    */
-/*  THE POSSIBILITY OF SUCH DAMAGE.                                           */
-/******************************************************************************/
-
-/*
- * Copyright © 2007 Pierre Habouzit
- */
-
-#include <fcntl.h>
-#include <grp.h>
-#include <pwd.h>
-#include <sys/un.h>
-
-#include "common.h"
-
-static int setnonblock(int sock)
-{
-    int res = fcntl(sock, F_GETFL);
-
-    if (res < 0) {
-        UNIXERR("fcntl");
-        return -1;
-    }
-
-    if (fcntl(sock, F_SETFL, res | O_NONBLOCK) < 0) {
-        UNIXERR("fcntl");
-        return -1;
-    }
-
-    return 0;
-}
-
-
-int tcp_listen_nonblock(const struct sockaddr *addr, socklen_t len)
-{
-    int sock;
-
-    switch (addr->sa_family) {
-      case AF_UNIX:
-        unlink(((struct sockaddr_un *)addr)->sun_path);
-        sock = socket(PF_UNIX, SOCK_STREAM, 0);
-        break;
-      case AF_INET:
-        sock = socket(PF_INET, SOCK_STREAM, 0);
-        break;
-      case AF_INET6:
-        sock = socket(PF_INET6, SOCK_STREAM, 0);
-        break;
-      default:
-        errno = EINVAL;
-        return -1;
-    }
-
-    if (sock < 0) {
-        UNIXERR("socket");
-        return -1;
-    }
-
-    if (addr->sa_family != AF_UNIX) {
-        int v = 1;
-        if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &v, sizeof(v)) < 0) {
-            UNIXERR("setsockopt(SO_REUSEADDR)");
-            close(sock);
-            return -1;
-        }
-    }
-
-    if (bind(sock, addr, len) < 0) {
-        UNIXERR("bind");
-        close(sock);
-        return -1;
-    }
-
-    if (setnonblock(sock)) {
-        close(sock);
-        return -1;
-    }
-
-    if (listen(sock, 0) < 0) {
-        UNIXERR("bind");
-        close(sock);
-        return -1;
-    }
-
-    return sock;
-}
-
-int accept_nonblock(int fd)
-{
-    int sock = accept(fd, NULL, 0);
-
-    if (sock < 0) {
-        UNIXERR("accept");
-        return -1;
-    }
-
-    if (setnonblock(sock)) {
-        close(sock);
-        return -1;
-    }
-
-    return sock;
-}
-
-int daemon_detach(void)
-{
-    pid_t pid;
-
-    close(STDIN_FILENO);
-    close(STDOUT_FILENO);
-    close(STDERR_FILENO);
-
-    open("/dev/null", O_RDWR);
-    open("/dev/null", O_RDWR);
-    open("/dev/null", O_RDWR);
-
-    pid = fork();
-    if (pid < 0)
-        return -1;
-    if (pid)
-        exit(0);
-
-    setsid();
-    return 0;
-}
-
-int drop_privileges(const char *user, const char *group)
-{
-    if (!geteuid()) {
-        struct passwd *pw;
-        struct group *gr;
-
-        if (group) {
-            gr = getgrnam(group);
-            if (!gr)
-                return -1;
-            setgid(gr->gr_gid);
-        }
-
-        pw = getpwnam(user);
-        if (!pw)
-            return -1;
-        if (!group) {
-            setgid(pw->pw_gid);
-        }
-        setuid(pw->pw_uid);
-    }
-
-    return 0;
-}