diff options
| -rw-r--r-- | ripd/ChangeLog | 17 | ||||
| -rw-r--r-- | ripd/rip_interface.c | 40 | ||||
| -rw-r--r-- | ripd/ripd.c | 41 |
3 files changed, 47 insertions, 51 deletions
diff --git a/ripd/ChangeLog b/ripd/ChangeLog index 4bdc8de9..b39faa95 100644 --- a/ripd/ChangeLog +++ b/ripd/ChangeLog @@ -1,3 +1,20 @@ +2005-08-16 Paul Jakma <paul.jakma@sun.com> + + * ripd.c: (general) Fix previous commit, broke multicast bind and + hence setting of source port, which broke communication with + non-borken ripd. Fix removes more stuff from rip_interface.c + than it adds to ripd.c ;) + (rip_create_socket) the to argument really is a from argument, + rename it. Set the source port to RIP port unconditionally, it's + required. + (rip_send_packet) Set from address correctly for multicast. + (rip_output_process) trivial: num can be BSS specified, rather + than in body. + * rip_interface.c: (rip_interface_multicast_set) strip out + redundant stuff related to bind, which rip_create_socket does. + Just make it set the multicast socket option, as per the + interface concerned, no more. + 2005-06-03 Paul Jakma <paul.jakma@sun.com> * ripd.c: (rip_create_socket) move it up so rip_send_packet diff --git a/ripd/rip_interface.c b/ripd/rip_interface.c index 4a6f78e2..5fa4b7d3 100644 --- a/ripd/rip_interface.c +++ b/ripd/rip_interface.c @@ -139,9 +139,6 @@ rip_interface_new () void rip_interface_multicast_set (int sock, struct connected *connected) { - int ret; - struct servent *sp; - struct sockaddr_in from; struct in_addr addr; struct prefix_ipv4 *p; @@ -161,43 +158,8 @@ rip_interface_multicast_set (int sock, struct connected *connected) "source address %s for interface %s", sock, inet_ntoa(addr), connected->ifp->name); - return; - } - - /* Bind myself. */ - memset (&from, 0, sizeof (struct sockaddr_in)); - - /* Set RIP port. */ - sp = getservbyname ("router", "udp"); - if (sp) - from.sin_port = sp->s_port; - else - from.sin_port = htons (RIP_PORT_DEFAULT); - - /* Address should be any address. */ - from.sin_family = AF_INET; - from.sin_addr = connected->address->u.prefix4; -#ifdef HAVE_SIN_LEN - from.sin_len = sizeof (struct sockaddr_in); -#endif /* HAVE_SIN_LEN */ - - if (ripd_privs.change (ZPRIVS_RAISE)) - zlog_err ("rip_interface_multicast_set: could not raise privs"); - - ret = bind (sock, (struct sockaddr *) & from, sizeof (struct sockaddr_in)); - if (ret < 0) - { - zlog_warn ("Can't bind socket fd %d to %s port %d for " - "interface %s: %s", - sock,inet_ntoa(from.sin_addr), - (int)ntohs(from.sin_port), - connected->ifp->name, - safe_strerror (errno)); } - - if (ripd_privs.change (ZPRIVS_LOWER)) - zlog_err ("rip_interface_multicast_set: could not lower privs"); - + return; } diff --git a/ripd/ripd.c b/ripd/ripd.c index fdb26446..d21485e5 100644 --- a/ripd/ripd.c +++ b/ripd/ripd.c @@ -1321,21 +1321,26 @@ rip_response_process (struct rip_packet *packet, int size, /* Make socket for RIP protocol. */ static int -rip_create_socket (struct sockaddr_in *to) +rip_create_socket (struct sockaddr_in *from) { int ret; int sock; struct sockaddr_in addr; - if (!to) + memset (&addr, 0, sizeof (struct sockaddr_in)); + + if (!from) { - memset (&addr, 0, sizeof (struct sockaddr_in)); - addr.sin_family = AF_INET; - addr.sin_port = htons (RIP_PORT_DEFAULT); addr.sin_family = AF_INET; addr.sin_addr.s_addr = INADDR_ANY; +#ifdef HAVE_SINLEN + addr.sin_len = sizeof (struct sockaddr_in); +#endif /* HAVE_SINLEN */ } + /* sending port must always be the RIP port */ + addr.sin_port = htons (RIP_PORT_DEFAULT); + /* Make datagram socket. */ sock = socket (AF_INET, SOCK_DGRAM, 0); if (sock < 0) @@ -1360,8 +1365,12 @@ rip_create_socket (struct sockaddr_in *to) int save_errno = errno; if (ripd_privs.change (ZPRIVS_LOWER)) zlog_err ("rip_create_socket: could not lower privs"); - zlog_err("cannot bind to port %d: %s", - (int)ntohs(addr.sin_port), safe_strerror(save_errno)); + + zlog_err("%s: Can't bind socket %d to %s port %d: %s", __func__, + sock, inet_ntoa(addr.sin_addr), + (int) ntohs(addr.sin_port), + safe_strerror(save_errno)); + close (sock); return ret; } @@ -1440,16 +1449,25 @@ rip_send_packet (u_char * buf, int size, struct sockaddr_in *to, } else { - + struct sockaddr_in from; + sin.sin_port = htons (RIP_PORT_DEFAULT); sin.sin_addr.s_addr = htonl (INADDR_RIP_GROUP); - + + /* multicast send should bind to local interface address */ + from.sin_family = AF_INET; + from.sin_port = htons (RIP_PORT_DEFAULT); + from.sin_addr = ifc->address->u.prefix4; +#ifdef HAVE_SIN_LEN + from.sin_len = sizeof (struct sockaddr_in); +#endif /* HAVE_SIN_LEN */ + /* * we have to open a new socket for each packet because this * is the most portable way to bind to a different source * ipv4 address for each packet. */ - if ( (send_sock = rip_create_socket (&sin)) < 0) + if ( (send_sock = rip_create_socket (&from)) < 0) { zlog_warn("rip_send_packet could not create socket."); return -1; @@ -2105,7 +2123,7 @@ rip_output_process (struct connected *ifc, struct sockaddr_in *to, with larger key string sizes */ char auth_str[RIP_AUTH_SIMPLE_SIZE]; size_t doff; /* offset of digest offset field */ - int num; + int num = 0; int rtemax; int subnetted = 0; @@ -2124,7 +2142,6 @@ rip_output_process (struct connected *ifc, struct sockaddr_in *to, /* Reset stream and RTE counter. */ stream_reset (s); - num = 0; rtemax = (RIP_PACKET_MAXSIZ - 4) / 20; /* Get RIP interface. */ |