/*
- PIM for Quagga
- Copyright (C) 2008 Everton da Silva Marques
-
- This program 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.
-
- This program 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; see the file COPYING; if not, write to the
- Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- MA 02110-1301 USA
-*/
+ * PIM for Quagga
+ * Copyright (C) 2008 Everton da Silva Marques
+ *
+ * This program 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.
+ *
+ * This program 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; see the file COPYING; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
#include <zebra.h>
#include "if.h"
#include "vrf.h"
#include "sockopt.h"
+#include "lib_errors.h"
#include "pimd.h"
#include "pim_mroute.h"
#include "pim_sock.h"
#include "pim_str.h"
-#include "pim_igmp_join.h"
/* GLOBAL VARS */
-int
-pim_socket_raw (int protocol)
+int pim_socket_raw(int protocol)
{
- int fd;
+ int fd;
+
+ frr_elevate_privs(&pimd_privs) {
- if ( pimd_privs.change (ZPRIVS_RAISE) )
- zlog_err ("pim_sockek_raw: could not raise privs, %s",
- safe_strerror (errno) );
+ fd = socket(AF_INET, SOCK_RAW, protocol);
- fd = socket(AF_INET, SOCK_RAW, protocol);
+ }
- if ( pimd_privs.change (ZPRIVS_LOWER) )
- zlog_err ("pim_socket_raw: could not lower privs, %s",
- safe_strerror (errno) );
+ if (fd < 0) {
+ zlog_warn("Could not create raw socket: errno=%d: %s", errno,
+ safe_strerror(errno));
+ return PIM_SOCK_ERR_SOCKET;
+ }
- if (fd < 0) {
- zlog_warn("Could not create raw socket: errno=%d: %s",
- errno, safe_strerror(errno));
- return PIM_SOCK_ERR_SOCKET;
- }
-
- return fd;
+ return fd;
}
-int
-pim_socket_ip_hdr (int fd)
+void pim_socket_ip_hdr(int fd)
{
- const int on = 1;
- int ret;
-
- if (pimd_privs.change (ZPRIVS_RAISE))
- zlog_err ("%s: could not raise privs, %s",
- __PRETTY_FUNCTION__, safe_strerror (errno));
+ const int on = 1;
- ret = setsockopt (fd, IPPROTO_IP, IP_HDRINCL, &on, sizeof (on));
+ frr_elevate_privs(&pimd_privs) {
- if (pimd_privs.change (ZPRIVS_LOWER))
- zlog_err ("%s: could not lower privs, %s",
- __PRETTY_FUNCTION__, safe_strerror (errno));
+ if (setsockopt(fd, IPPROTO_IP, IP_HDRINCL, &on, sizeof(on)))
+ zlog_err("%s: Could not turn on IP_HDRINCL option: %s",
+ __PRETTY_FUNCTION__, safe_strerror(errno));
- return ret;
+ }
}
/*
* Given a socket and a interface,
* Bind that socket to that interface
*/
-int
-pim_socket_bind (int fd, struct interface *ifp)
+int pim_socket_bind(int fd, struct interface *ifp)
{
- int ret = 0;
+ int ret = 0;
#ifdef SO_BINDTODEVICE
- if (pimd_privs.change (ZPRIVS_RAISE))
- zlog_err ("%s: could not raise privs, %s",
- __PRETTY_FUNCTION__, safe_strerror (errno));
+ frr_elevate_privs(&pimd_privs) {
- ret = setsockopt (fd, SOL_SOCKET,
- SO_BINDTODEVICE, ifp->name, strlen (ifp->name));
+ ret = setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, ifp->name,
+ strlen(ifp->name));
- if (pimd_privs.change (ZPRIVS_LOWER))
- zlog_err ("%s: could not lower privs, %s",
- __PRETTY_FUNCTION__, safe_strerror (errno));
+ }
#endif
- return ret;
+ return ret;
}
-int pim_socket_mcast(int protocol, struct in_addr ifaddr, struct interface *ifp, u_char loop)
+int pim_socket_mcast(int protocol, struct in_addr ifaddr, struct interface *ifp,
+ uint8_t loop)
{
- int rcvbuf = 1024 * 1024 * 8;
+ int rcvbuf = 1024 * 1024 * 8;
#ifdef HAVE_STRUCT_IP_MREQN_IMR_IFINDEX
- struct ip_mreqn mreq;
+ struct ip_mreqn mreq;
#else
- struct ip_mreq mreq;
+ struct ip_mreq mreq;
#endif
- int fd;
+ int fd;
- fd = pim_socket_raw(protocol);
- if (fd < 0) {
- zlog_warn("Could not create multicast socket: errno=%d: %s",
- errno, safe_strerror(errno));
- return PIM_SOCK_ERR_SOCKET;
- }
+ fd = pim_socket_raw(protocol);
+ if (fd < 0) {
+ zlog_warn("Could not create multicast socket: errno=%d: %s",
+ errno, safe_strerror(errno));
+ return PIM_SOCK_ERR_SOCKET;
+ }
#ifdef SO_BINDTODEVICE
- if (protocol == IPPROTO_PIM)
- {
- int ret;
-
- ret = pim_socket_bind (fd, ifp);
- if (ret)
- {
- close (fd);
- zlog_warn("Could not set fd: %d for interface: %s to device",
- fd, ifp->name);
- return PIM_SOCK_ERR_BIND;
+ if (protocol == IPPROTO_PIM) {
+ int ret;
+
+ ret = pim_socket_bind(fd, ifp);
+ if (ret) {
+ close(fd);
+ zlog_warn(
+ "Could not set fd: %d for interface: %s to device",
+ fd, ifp->name);
+ return PIM_SOCK_ERR_BIND;
+ }
}
- }
#else
- /* XXX: use IP_PKTINFO / IP_RECVIF to emulate behaviour? Or change to
- * only use 1 socket for all interfaces? */
+/* XXX: use IP_PKTINFO / IP_RECVIF to emulate behaviour? Or change to
+ * only use 1 socket for all interfaces? */
#endif
- /* Needed to obtain destination address from recvmsg() */
- {
+ /* Needed to obtain destination address from recvmsg() */
+ {
#if defined(HAVE_IP_PKTINFO)
- /* Linux and Solaris IP_PKTINFO */
- int opt = 1;
- if (setsockopt(fd, IPPROTO_IP, IP_PKTINFO, &opt, sizeof(opt))) {
- zlog_warn("Could not set IP_PKTINFO on socket fd=%d: errno=%d: %s",
- fd, errno, safe_strerror(errno));
- }
+ /* Linux and Solaris IP_PKTINFO */
+ int opt = 1;
+ if (setsockopt(fd, IPPROTO_IP, IP_PKTINFO, &opt, sizeof(opt))) {
+ zlog_warn(
+ "Could not set IP_PKTINFO on socket fd=%d: errno=%d: %s",
+ fd, errno, safe_strerror(errno));
+ }
#elif defined(HAVE_IP_RECVDSTADDR)
- /* BSD IP_RECVDSTADDR */
- int opt = 1;
- if (setsockopt(fd, IPPROTO_IP, IP_RECVDSTADDR, &opt, sizeof(opt))) {
- zlog_warn("Could not set IP_RECVDSTADDR on socket fd=%d: errno=%d: %s",
- fd, errno, safe_strerror(errno));
- }
+ /* BSD IP_RECVDSTADDR */
+ int opt = 1;
+ if (setsockopt(fd, IPPROTO_IP, IP_RECVDSTADDR, &opt,
+ sizeof(opt))) {
+ zlog_warn(
+ "Could not set IP_RECVDSTADDR on socket fd=%d: errno=%d: %s",
+ fd, errno, safe_strerror(errno));
+ }
#else
- zlog_err("%s %s: Missing IP_PKTINFO and IP_RECVDSTADDR: unable to get dst addr from recvmsg()",
- __FILE__, __PRETTY_FUNCTION__);
- close(fd);
- return PIM_SOCK_ERR_DSTADDR;
+ flog_err(
+ EC_LIB_DEVELOPMENT,
+ "%s %s: Missing IP_PKTINFO and IP_RECVDSTADDR: unable to get dst addr from recvmsg()",
+ __FILE__, __PRETTY_FUNCTION__);
+ close(fd);
+ return PIM_SOCK_ERR_DSTADDR;
#endif
- }
-
-
- /* Set router alert (RFC 2113) for all IGMP messages (RFC 3376 4. Message Formats)*/
- if (protocol == IPPROTO_IGMP) {
- uint8_t ra[4];
- ra[0] = 148;
- ra[1] = 4;
- ra[2] = 0;
- ra[3] = 0;
- if (setsockopt(fd, IPPROTO_IP, IP_OPTIONS, ra, 4)) {
- zlog_warn("Could not set Router Alert Option on socket fd=%d: errno=%d: %s",
- fd, errno, safe_strerror(errno));
- close(fd);
- return PIM_SOCK_ERR_RA;
- }
- }
-
- {
- int reuse = 1;
- if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
- (void *) &reuse, sizeof(reuse))) {
- zlog_warn("Could not set Reuse Address Option on socket fd=%d: errno=%d: %s",
- fd, errno, safe_strerror(errno));
- close(fd);
- return PIM_SOCK_ERR_REUSE;
- }
- }
-
- {
- const int MTTL = 1;
- int ttl = MTTL;
- if (setsockopt(fd, IPPROTO_IP, IP_MULTICAST_TTL,
- (void *) &ttl, sizeof(ttl))) {
- zlog_warn("Could not set multicast TTL=%d on socket fd=%d: errno=%d: %s",
- MTTL, fd, errno, safe_strerror(errno));
- close(fd);
- return PIM_SOCK_ERR_TTL;
- }
- }
-
- if (setsockopt_ipv4_multicast_loop (fd, loop)) {
- zlog_warn("Could not %s Multicast Loopback Option on socket fd=%d: errno=%d: %s",
- loop ? "enable" : "disable",
- fd, errno, safe_strerror(errno));
- close(fd);
- return PIM_SOCK_ERR_LOOP;
- }
-
- memset (&mreq, 0, sizeof (mreq));
+ }
+
+
+ /* Set router alert (RFC 2113) for all IGMP messages (RFC 3376 4.
+ * Message Formats)*/
+ if (protocol == IPPROTO_IGMP) {
+ uint8_t ra[4];
+ ra[0] = 148;
+ ra[1] = 4;
+ ra[2] = 0;
+ ra[3] = 0;
+ if (setsockopt(fd, IPPROTO_IP, IP_OPTIONS, ra, 4)) {
+ zlog_warn(
+ "Could not set Router Alert Option on socket fd=%d: errno=%d: %s",
+ fd, errno, safe_strerror(errno));
+ close(fd);
+ return PIM_SOCK_ERR_RA;
+ }
+ }
+
+ {
+ int reuse = 1;
+ if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (void *)&reuse,
+ sizeof(reuse))) {
+ zlog_warn(
+ "Could not set Reuse Address Option on socket fd=%d: errno=%d: %s",
+ fd, errno, safe_strerror(errno));
+ close(fd);
+ return PIM_SOCK_ERR_REUSE;
+ }
+ }
+
+ {
+ const int MTTL = 1;
+ int ttl = MTTL;
+ if (setsockopt(fd, IPPROTO_IP, IP_MULTICAST_TTL, (void *)&ttl,
+ sizeof(ttl))) {
+ zlog_warn(
+ "Could not set multicast TTL=%d on socket fd=%d: errno=%d: %s",
+ MTTL, fd, errno, safe_strerror(errno));
+ close(fd);
+ return PIM_SOCK_ERR_TTL;
+ }
+ }
+
+ if (setsockopt_ipv4_multicast_loop(fd, loop)) {
+ zlog_warn(
+ "Could not %s Multicast Loopback Option on socket fd=%d: errno=%d: %s",
+ loop ? "enable" : "disable", fd, errno,
+ safe_strerror(errno));
+ close(fd);
+ return PIM_SOCK_ERR_LOOP;
+ }
+
+ memset(&mreq, 0, sizeof(mreq));
#ifdef HAVE_STRUCT_IP_MREQN_IMR_IFINDEX
- mreq.imr_ifindex = ifp->ifindex;
+ mreq.imr_ifindex = ifp->ifindex;
#else
- /*
- * I am not sure what to do here yet for *BSD
- */
- //mreq.imr_interface = ifindex;
+/*
+ * I am not sure what to do here yet for *BSD
+ */
+// mreq.imr_interface = ifindex;
#endif
- if (setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF,
- (void *) &mreq, sizeof(mreq))) {
- zlog_warn("Could not set Outgoing Interface Option on socket fd=%d: errno=%d: %s",
- fd, errno, safe_strerror(errno));
- close(fd);
- return PIM_SOCK_ERR_IFACE;
- }
-
- if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &rcvbuf, sizeof(rcvbuf)))
- zlog_warn("%s: Failure to set buffer size to %d",
- __PRETTY_FUNCTION__, rcvbuf);
-
- {
- long flags;
-
- flags = fcntl(fd, F_GETFL, 0);
- if (flags < 0) {
- zlog_warn("Could not get fcntl(F_GETFL,O_NONBLOCK) on socket fd=%d: errno=%d: %s",
- fd, errno, safe_strerror(errno));
- close(fd);
- return PIM_SOCK_ERR_NONBLOCK_GETFL;
- }
-
- if (fcntl(fd, F_SETFL, flags | O_NONBLOCK)) {
- zlog_warn("Could not set fcntl(F_SETFL,O_NONBLOCK) on socket fd=%d: errno=%d: %s",
- fd, errno, safe_strerror(errno));
- close(fd);
- return PIM_SOCK_ERR_NONBLOCK_SETFL;
- }
- }
-
- return fd;
+ if (setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF, (void *)&mreq,
+ sizeof(mreq))) {
+ zlog_warn(
+ "Could not set Outgoing Interface Option on socket fd=%d: errno=%d: %s",
+ fd, errno, safe_strerror(errno));
+ close(fd);
+ return PIM_SOCK_ERR_IFACE;
+ }
+
+ if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &rcvbuf, sizeof(rcvbuf)))
+ zlog_warn("%s: Failure to set buffer size to %d",
+ __PRETTY_FUNCTION__, rcvbuf);
+
+ {
+ long flags;
+
+ flags = fcntl(fd, F_GETFL, 0);
+ if (flags < 0) {
+ zlog_warn(
+ "Could not get fcntl(F_GETFL,O_NONBLOCK) on socket fd=%d: errno=%d: %s",
+ fd, errno, safe_strerror(errno));
+ close(fd);
+ return PIM_SOCK_ERR_NONBLOCK_GETFL;
+ }
+
+ if (fcntl(fd, F_SETFL, flags | O_NONBLOCK)) {
+ zlog_warn(
+ "Could not set fcntl(F_SETFL,O_NONBLOCK) on socket fd=%d: errno=%d: %s",
+ fd, errno, safe_strerror(errno));
+ close(fd);
+ return PIM_SOCK_ERR_NONBLOCK_SETFL;
+ }
+ }
+
+ return fd;
}
-int pim_socket_join(int fd, struct in_addr group,
- struct in_addr ifaddr, ifindex_t ifindex)
+int pim_socket_join(int fd, struct in_addr group, struct in_addr ifaddr,
+ ifindex_t ifindex)
{
- int ret;
+ int ret;
#ifdef HAVE_STRUCT_IP_MREQN_IMR_IFINDEX
- struct ip_mreqn opt;
+ struct ip_mreqn opt;
#else
- struct ip_mreq opt;
+ struct ip_mreq opt;
#endif
- opt.imr_multiaddr = group;
+ opt.imr_multiaddr = group;
#ifdef HAVE_STRUCT_IP_MREQN_IMR_IFINDEX
- opt.imr_address = ifaddr;
- opt.imr_ifindex = ifindex;
+ opt.imr_address = ifaddr;
+ opt.imr_ifindex = ifindex;
#else
- opt.imr_interface = ifaddr;
+ opt.imr_interface = ifaddr;
#endif
- ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, &opt, sizeof(opt));
- if (ret) {
- char group_str[INET_ADDRSTRLEN];
- char ifaddr_str[INET_ADDRSTRLEN];
- if (!inet_ntop(AF_INET, &group, group_str , sizeof(group_str)))
- sprintf(group_str, "<group?>");
- if (!inet_ntop(AF_INET, &ifaddr, ifaddr_str , sizeof(ifaddr_str)))
- sprintf(ifaddr_str, "<ifaddr?>");
-
- zlog_err("Failure socket joining fd=%d group %s on interface address %s: errno=%d: %s",
- fd, group_str, ifaddr_str, errno, safe_strerror(errno));
- return ret;
- }
-
- if (PIM_DEBUG_TRACE) {
- char group_str[INET_ADDRSTRLEN];
- char ifaddr_str[INET_ADDRSTRLEN];
- if (!inet_ntop(AF_INET, &group, group_str , sizeof(group_str)))
- sprintf(group_str, "<group?>");
- if (!inet_ntop(AF_INET, &ifaddr, ifaddr_str , sizeof(ifaddr_str)))
- sprintf(ifaddr_str, "<ifaddr?>");
-
- zlog_debug("Socket fd=%d joined group %s on interface address %s",
- fd, group_str, ifaddr_str);
- }
-
- return ret;
-}
+ ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, &opt, sizeof(opt));
+ if (ret) {
+ char group_str[INET_ADDRSTRLEN];
+ char ifaddr_str[INET_ADDRSTRLEN];
+ if (!inet_ntop(AF_INET, &group, group_str, sizeof(group_str)))
+ sprintf(group_str, "<group?>");
+ if (!inet_ntop(AF_INET, &ifaddr, ifaddr_str,
+ sizeof(ifaddr_str)))
+ sprintf(ifaddr_str, "<ifaddr?>");
+
+ flog_err(
+ EC_LIB_SOCKET,
+ "Failure socket joining fd=%d group %s on interface address %s: errno=%d: %s",
+ fd, group_str, ifaddr_str, errno, safe_strerror(errno));
+ return ret;
+ }
-int pim_socket_join_source(int fd, ifindex_t ifindex,
- struct in_addr group_addr,
- struct in_addr source_addr,
- const char *ifname)
-{
- if (pim_igmp_join_source(fd, ifindex, group_addr, source_addr)) {
- char group_str[INET_ADDRSTRLEN];
- char source_str[INET_ADDRSTRLEN];
- pim_inet4_dump("<grp?>", group_addr, group_str, sizeof(group_str));
- pim_inet4_dump("<src?>", source_addr, source_str, sizeof(source_str));
- zlog_warn("%s: setsockopt(fd=%d) failure for IGMP group %s source %s ifindex %d on interface %s: errno=%d: %s",
- __PRETTY_FUNCTION__,
- fd, group_str, source_str, ifindex, ifname,
- errno, safe_strerror(errno));
- return -1;
- }
-
- return 0;
+ if (PIM_DEBUG_TRACE) {
+ char group_str[INET_ADDRSTRLEN];
+ char ifaddr_str[INET_ADDRSTRLEN];
+ if (!inet_ntop(AF_INET, &group, group_str, sizeof(group_str)))
+ sprintf(group_str, "<group?>");
+ if (!inet_ntop(AF_INET, &ifaddr, ifaddr_str,
+ sizeof(ifaddr_str)))
+ sprintf(ifaddr_str, "<ifaddr?>");
+
+ zlog_debug(
+ "Socket fd=%d joined group %s on interface address %s",
+ fd, group_str, ifaddr_str);
+ }
+
+ return ret;
}
int pim_socket_recvfromto(int fd, uint8_t *buf, size_t len,
struct sockaddr_in *to, socklen_t *tolen,
ifindex_t *ifindex)
{
- struct msghdr msgh;
- struct cmsghdr *cmsg;
- struct iovec iov;
- char cbuf[1000];
- int err;
-
- /*
- * IP_PKTINFO / IP_RECVDSTADDR don't yield sin_port.
- * Use getsockname() to get sin_port.
- */
- if (to) {
- struct sockaddr_in si;
- socklen_t si_len = sizeof(si);
-
- memset (&si, 0, sizeof (si));
- to->sin_family = AF_INET;
-
- pim_socket_getsockname(fd, (struct sockaddr *) &si, &si_len);
-
- to->sin_port = si.sin_port;
- to->sin_addr = si.sin_addr;
-
- if (tolen)
- *tolen = sizeof(si);
- }
-
- memset(&msgh, 0, sizeof(struct msghdr));
- iov.iov_base = buf;
- iov.iov_len = len;
- msgh.msg_control = cbuf;
- msgh.msg_controllen = sizeof(cbuf);
- msgh.msg_name = from;
- msgh.msg_namelen = fromlen ? *fromlen : 0;
- msgh.msg_iov = &iov;
- msgh.msg_iovlen = 1;
- msgh.msg_flags = 0;
-
- err = recvmsg(fd, &msgh, 0);
- if (err < 0)
- return err;
-
- if (fromlen)
- *fromlen = msgh.msg_namelen;
-
- for (cmsg = CMSG_FIRSTHDR(&msgh);
- cmsg != NULL;
- cmsg = CMSG_NXTHDR(&msgh,cmsg)) {
+ struct msghdr msgh;
+ struct cmsghdr *cmsg;
+ struct iovec iov;
+ char cbuf[1000];
+ int err;
+
+ /*
+ * IP_PKTINFO / IP_RECVDSTADDR don't yield sin_port.
+ * Use getsockname() to get sin_port.
+ */
+ if (to) {
+ struct sockaddr_in si;
+ socklen_t si_len = sizeof(si);
+
+ memset(&si, 0, sizeof(si));
+ to->sin_family = AF_INET;
+
+ pim_socket_getsockname(fd, (struct sockaddr *)&si, &si_len);
+
+ to->sin_port = si.sin_port;
+ to->sin_addr = si.sin_addr;
+
+ if (tolen)
+ *tolen = sizeof(si);
+ }
+
+ memset(&msgh, 0, sizeof(struct msghdr));
+ iov.iov_base = buf;
+ iov.iov_len = len;
+ msgh.msg_control = cbuf;
+ msgh.msg_controllen = sizeof(cbuf);
+ msgh.msg_name = from;
+ msgh.msg_namelen = fromlen ? *fromlen : 0;
+ msgh.msg_iov = &iov;
+ msgh.msg_iovlen = 1;
+ msgh.msg_flags = 0;
+
+ err = recvmsg(fd, &msgh, 0);
+ if (err < 0)
+ return err;
+
+ if (fromlen)
+ *fromlen = msgh.msg_namelen;
+
+ for (cmsg = CMSG_FIRSTHDR(&msgh); cmsg != NULL;
+ cmsg = CMSG_NXTHDR(&msgh, cmsg)) {
#ifdef HAVE_IP_PKTINFO
- if ((cmsg->cmsg_level == IPPROTO_IP) && (cmsg->cmsg_type == IP_PKTINFO)) {
- struct in_pktinfo *i = (struct in_pktinfo *) CMSG_DATA(cmsg);
- if (to)
- ((struct sockaddr_in *) to)->sin_addr = i->ipi_addr;
- if (tolen)
- *tolen = sizeof(struct sockaddr_in);
- if (ifindex)
- *ifindex = i->ipi_ifindex;
-
- break;
- }
+ if ((cmsg->cmsg_level == IPPROTO_IP)
+ && (cmsg->cmsg_type == IP_PKTINFO)) {
+ struct in_pktinfo *i =
+ (struct in_pktinfo *)CMSG_DATA(cmsg);
+ if (to)
+ ((struct sockaddr_in *)to)->sin_addr =
+ i->ipi_addr;
+ if (tolen)
+ *tolen = sizeof(struct sockaddr_in);
+ if (ifindex)
+ *ifindex = i->ipi_ifindex;
+
+ break;
+ }
#endif
#ifdef HAVE_IP_RECVDSTADDR
- if ((cmsg->cmsg_level == IPPROTO_IP) && (cmsg->cmsg_type == IP_RECVDSTADDR)) {
- struct in_addr *i = (struct in_addr *) CMSG_DATA(cmsg);
- if (to)
- ((struct sockaddr_in *) to)->sin_addr = *i;
- if (tolen)
- *tolen = sizeof(struct sockaddr_in);
-
- break;
- }
+ if ((cmsg->cmsg_level == IPPROTO_IP)
+ && (cmsg->cmsg_type == IP_RECVDSTADDR)) {
+ struct in_addr *i = (struct in_addr *)CMSG_DATA(cmsg);
+ if (to)
+ ((struct sockaddr_in *)to)->sin_addr = *i;
+ if (tolen)
+ *tolen = sizeof(struct sockaddr_in);
+
+ break;
+ }
#endif
#if defined(HAVE_IP_RECVIF) && defined(CMSG_IFINDEX)
- if (cmsg->cmsg_type == IP_RECVIF)
- if (ifindex)
- *ifindex = CMSG_IFINDEX(cmsg);
+ if (cmsg->cmsg_type == IP_RECVIF)
+ if (ifindex)
+ *ifindex = CMSG_IFINDEX(cmsg);
#endif
- } /* for (cmsg) */
+ } /* for (cmsg) */
- return err; /* len */
+ return err; /* len */
}
int pim_socket_mcastloop_get(int fd)
{
- int loop;
- socklen_t loop_len = sizeof(loop);
-
- if (getsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
- &loop, &loop_len)) {
- int e = errno;
- zlog_warn("Could not get Multicast Loopback Option on socket fd=%d: errno=%d: %s",
- fd, errno, safe_strerror(errno));
- errno = e;
- return PIM_SOCK_ERR_LOOP;
- }
-
- return loop;
+ int loop;
+ socklen_t loop_len = sizeof(loop);
+
+ if (getsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP, &loop, &loop_len)) {
+ int e = errno;
+ zlog_warn(
+ "Could not get Multicast Loopback Option on socket fd=%d: errno=%d: %s",
+ fd, errno, safe_strerror(errno));
+ errno = e;
+ return PIM_SOCK_ERR_LOOP;
+ }
+
+ return loop;
}
int pim_socket_getsockname(int fd, struct sockaddr *name, socklen_t *namelen)
{
- if (getsockname(fd, name, namelen)) {
- int e = errno;
- zlog_warn("Could not get Socket Name for socket fd=%d: errno=%d: %s",
- fd, errno, safe_strerror(errno));
- errno = e;
- return PIM_SOCK_ERR_NAME;
- }
-
- return PIM_SOCK_ERR_NONE;
+ if (getsockname(fd, name, namelen)) {
+ int e = errno;
+ zlog_warn(
+ "Could not get Socket Name for socket fd=%d: errno=%d: %s",
+ fd, errno, safe_strerror(errno));
+ errno = e;
+ return PIM_SOCK_ERR_NAME;
+ }
+
+ return PIM_SOCK_ERR_NONE;
}
projects / mirror_frr.git / blobdiff