/* * $Id$ * * Copyright (C) 2001-2003 Fhg Fokus * * This file is part of ser, a free SIP server. * * ser 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 2 of the License, or * (at your option) any later version * * For a license to use the ser software under conditions * other than those described here, or to purchase support for this * software, please contact iptel.org by e-mail at the following addresses: * info@iptel.org * * ser 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 this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ /* * History: * -------- * 2002-11-29 created by andrei * 2003-02-20 added solaris support (! HAVE_MSGHDR_MSG_CONTROL) (andrei) */ #ifdef USE_TCP #include <sys/types.h> #include <sys/socket.h> #include <sys/uio.h> #include <stdlib.h> /* for NULL definition on openbsd */ #include "dprint.h" /* at least 1 byte must be sent! */ int send_fd(int unix_socket, void* data, int data_len, int fd) { struct msghdr msg; struct iovec iov[1]; int ret; #ifdef HAVE_MSGHDR_MSG_CONTROL struct cmsghdr* cmsg; union { struct cmsghdr cm; char control[CMSG_SPACE(sizeof(fd))]; }control_un; msg.msg_control=control_un.control; msg.msg_controllen=sizeof(control_un.control); cmsg=CMSG_FIRSTHDR(&msg); cmsg->cmsg_level = SOL_SOCKET; cmsg->cmsg_type = SCM_RIGHTS; cmsg->cmsg_len = CMSG_LEN(sizeof(fd)); *(int*)CMSG_DATA(cmsg)=fd; msg.msg_flags=0; #else msg.msg_accrights=(caddr_t) &fd; msg.msg_accrightslen=sizeof(fd); #endif msg.msg_name=0; msg.msg_namelen=0; iov[0].iov_base=data; iov[0].iov_len=data_len; msg.msg_iov=iov; msg.msg_iovlen=1; ret=sendmsg(unix_socket, &msg, 0); return ret; } int receive_fd(int unix_socket, void* data, int data_len, int* fd) { struct msghdr msg; struct iovec iov[1]; int new_fd; int ret; #ifdef HAVE_MSGHDR_MSG_CONTROL struct cmsghdr* cmsg; union{ struct cmsghdr cm; char control[CMSG_SPACE(sizeof(new_fd))]; }control_un; msg.msg_control=control_un.control; msg.msg_controllen=sizeof(control_un.control); #else msg.msg_accrights=(caddr_t) &new_fd; msg.msg_accrightslen=sizeof(int); #endif msg.msg_name=0; msg.msg_namelen=0; iov[0].iov_base=data; iov[0].iov_len=data_len; msg.msg_iov=iov; msg.msg_iovlen=1; ret=recvmsg(unix_socket, &msg, 0); if (ret<=0) goto error; #ifdef HAVE_MSGHDR_MSG_CONTROL cmsg=CMSG_FIRSTHDR(&msg); if ((cmsg!=0) && (cmsg->cmsg_len==CMSG_LEN(sizeof(new_fd)))){ if (cmsg->cmsg_type!= SCM_RIGHTS){ LOG(L_ERR, "receive_fd: msg control type != SCM_RIGHTS\n"); ret=-1; goto error; } if (cmsg->cmsg_level!= SOL_SOCKET){ LOG(L_ERR, "receive_fd: msg level != SOL_SOCKET\n"); ret=-1; goto error; } *fd=*((int*) CMSG_DATA(cmsg)); }else{ LOG(L_ERR, "receive_fd: no descriptor passed, cmsg=%p, len=%d\n", cmsg, cmsg->cmsg_len); *fd=-1; /* it's not really an error */ } #else if (msg.msg_accrightslen==sizeof(int)){ *fd=new_fd; }else{ LOG(L_ERR, "receive_fd: no descriptor passed, accrightslen=%d\n", msg.msg_accrightslen); *fd=-1; } #endif error: return ret; } #endif