From e4006a93e3999ce5ab9dc82b29ef7e01ac370948 Mon Sep 17 00:00:00 2001 From: Alexander Barton Date: Tue, 3 Jan 2012 19:34:54 +0100 Subject: [PATCH] NGIRCd_Init(): Code cleanup --- src/ngircd/ngircd.c | 115 +++++++++++++++++++++++++------------------- 1 file changed, 66 insertions(+), 49 deletions(-) diff --git a/src/ngircd/ngircd.c b/src/ngircd/ngircd.c index e8370a1c..170a3cd7 100644 --- a/src/ngircd/ngircd.c +++ b/src/ngircd/ngircd.c @@ -602,12 +602,12 @@ Random_Init(void) /** * Initialize ngIRCd daemon. * - * @param NGIRCd_NoDaemon Set to true if ngIRCd should run in the - * foreground and not as a daemon. - * @return true on success. + * @param NGIRCd_NoDaemon Set to true if ngIRCd should run in the + * foreground (and not as a daemon). + * @return true on success. */ static bool -NGIRCd_Init( bool NGIRCd_NoDaemon ) +NGIRCd_Init(bool NGIRCd_NoDaemon) { static bool initialized; bool chrooted = false; @@ -623,57 +623,70 @@ NGIRCd_Init( bool NGIRCd_NoDaemon ) /* open /dev/null before chroot() */ fd = open( "/dev/null", O_RDWR); if (fd < 0) - Log(LOG_WARNING, "Could not open /dev/null: %s", strerror(errno)); + Log(LOG_WARNING, "Could not open /dev/null: %s", + strerror(errno)); } + /* SSL initialization */ if (!ConnSSL_InitLibrary()) Log(LOG_WARNING, "Warning: Error during SSL initialization, continuing ..."); - if( Conf_Chroot[0] ) { - if( chdir( Conf_Chroot ) != 0 ) { - Log( LOG_ERR, "Can't chdir() in ChrootDir (%s): %s", Conf_Chroot, strerror( errno )); + /* Change root */ + if (Conf_Chroot[0]) { + if (chdir(Conf_Chroot) != 0) { + Log(LOG_ERR, "Can't chdir() in ChrootDir (%s): %s", + Conf_Chroot, strerror(errno)); goto out; } - if( chroot( Conf_Chroot ) != 0 ) { + if (chroot(Conf_Chroot) != 0) { if (errno != EPERM) { - Log( LOG_ERR, "Can't change root directory to \"%s\": %s", - Conf_Chroot, strerror( errno )); + Log(LOG_ERR, + "Can't change root directory to \"%s\": %s", + Conf_Chroot, strerror(errno)); goto out; } } else { chrooted = true; - Log( LOG_INFO, "Changed root and working directory to \"%s\".", Conf_Chroot ); + Log(LOG_INFO, + "Changed root and working directory to \"%s\".", + Conf_Chroot); } } + /* Check user ID */ if (Conf_UID == 0) { - Log(LOG_INFO, "ServerUID must not be 0, using \"nobody\" instead.", Conf_UID); - - if (! NGIRCd_getNobodyID(&Conf_UID, &Conf_GID)) { - Log(LOG_WARNING, "Could not get user/group ID of user \"nobody\": %s", - errno ? strerror(errno) : "not found" ); + Log(LOG_INFO, + "ServerUID must not be 0, using \"nobody\" instead.", + Conf_UID); + + if (!NGIRCd_getNobodyID(&Conf_UID, &Conf_GID)) { + Log(LOG_WARNING, + "Could not get user/group ID of user \"nobody\": %s", + errno ? strerror(errno) : "not found" ); goto out; } } + /* Change group ID */ if (getgid() != Conf_GID) { - /* Change group ID */ if (setgid(Conf_GID) != 0) { real_errno = errno; - Log( LOG_ERR, "Can't change group ID to %u: %s", Conf_GID, strerror( errno )); + Log(LOG_ERR, "Can't change group ID to %u: %s", + Conf_GID, strerror(errno)); if (real_errno != EPERM) goto out; } } + /* Change user ID */ if (getuid() != Conf_UID) { - /* Change user ID */ if (setuid(Conf_UID) != 0) { real_errno = errno; - Log(LOG_ERR, "Can't change user ID to %u: %s", Conf_UID, strerror(errno)); - if (real_errno != EPERM) + Log(LOG_ERR, "Can't change user ID to %u: %s", + Conf_UID, strerror(errno)); + if (real_errno != EPERM) goto out; } } @@ -683,26 +696,27 @@ NGIRCd_Init( bool NGIRCd_NoDaemon ) /* Normally a child process is forked which isn't any longer * connected to ther controlling terminal. Use "--nodaemon" * to disable this "daemon mode" (useful for debugging). */ - if ( ! NGIRCd_NoDaemon ) { - pid = fork( ); - if( pid > 0 ) { + if (!NGIRCd_NoDaemon) { + pid = fork(); + if (pid > 0) { /* "Old" process: exit. */ - exit( 0 ); + exit(0); } - if( pid < 0 ) { + if (pid < 0) { /* Error!? */ - fprintf( stderr, "%s: Can't fork: %s!\nFatal error, exiting now ...\n", - PACKAGE_NAME, strerror( errno )); - exit( 1 ); + fprintf(stderr, + "%s: Can't fork: %s!\nFatal error, exiting now ...\n", + PACKAGE_NAME, strerror(errno)); + exit(1); } /* New child process */ #ifndef NeXT - (void)setsid( ); + (void)setsid(); #else setpgrp(0, getpid()); #endif - if (chdir( "/" ) != 0) + if (chdir("/") != 0) Log(LOG_ERR, "Can't change directory to '/': %s", strerror(errno)); @@ -713,19 +727,19 @@ NGIRCd_Init( bool NGIRCd_NoDaemon ) } pid = getpid(); - Pidfile_Create( pid ); + Pidfile_Create(pid); /* Check UID/GID we are running as, can be different from values * configured (e. g. if we were already started with a UID>0. */ Conf_UID = getuid(); Conf_GID = getgid(); - pwd = getpwuid( Conf_UID ); - grp = getgrgid( Conf_GID ); + pwd = getpwuid(Conf_UID); + grp = getgrgid(Conf_GID); Log(LOG_INFO, "Running as user %s(%ld), group %s(%ld), with PID %ld.", - pwd ? pwd->pw_name : "unknown", (long)Conf_UID, - grp ? grp->gr_name : "unknown", (long)Conf_GID, (long)pid); + pwd ? pwd->pw_name : "unknown", (long)Conf_UID, + grp ? grp->gr_name : "unknown", (long)Conf_GID, (long)pid); if (chrooted) { Log(LOG_INFO, "Running with root directory \"%s\".", @@ -734,20 +748,23 @@ NGIRCd_Init( bool NGIRCd_NoDaemon ) } else Log(LOG_INFO, "Not running with changed root directory."); - /* Change working directory to home directory of the user - * we are running as (only when running in daemon mode and not in chroot) */ + /* Change working directory to home directory of the user we are + * running as (only when running in daemon mode and not in chroot) */ + + if (NGIRCd_NoDaemon) + return true; if (pwd) { - if (!NGIRCd_NoDaemon ) { - if( chdir( pwd->pw_dir ) == 0 ) - Log( LOG_DEBUG, "Changed working directory to \"%s\" ...", pwd->pw_dir ); - else - Log( LOG_INFO, "Notice: Can't change working directory to \"%s\": %s", - pwd->pw_dir, strerror( errno )); - } - } else { - Log( LOG_ERR, "Can't get user informaton for UID %d!?", Conf_UID ); - } + if (chdir(pwd->pw_dir) == 0) + Log(LOG_DEBUG, + "Changed working directory to \"%s\" ...", + pwd->pw_dir); + else + Log(LOG_INFO, + "Notice: Can't change working directory to \"%s\": %s", + pwd->pw_dir, strerror(errno)); + } else + Log(LOG_ERR, "Can't get user informaton for UID %d!?", Conf_UID); return true; out: -- 2.39.2