diff options
| author | Harald Welte <laforge@gnumonks.org> | 2009-08-08 12:14:53 +0200 |
|---|---|---|
| committer | Harald Welte <laforge@gnumonks.org> | 2009-08-08 12:14:53 +0200 |
| commit | 81cff3c8c5bd4cd2845b125de791c9363b4b4594 (patch) | |
| tree | 5c715c8ae79a6d3491ec582347b70a020838f2ee /openbsc/src/ipaccess-find.c | |
| parent | e26d079c978497622ad1fd0c285e4ac59c66a48e (diff) | |
ipaccess-find: don't try to parse packets that are not IPAC_MSGT_ID_RESP
Diffstat (limited to 'openbsc/src/ipaccess-find.c')
| -rw-r--r-- | openbsc/src/ipaccess-find.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/openbsc/src/ipaccess-find.c b/openbsc/src/ipaccess-find.c index e495a4fa6..f469b6788 100644 --- a/openbsc/src/ipaccess-find.c +++ b/openbsc/src/ipaccess-find.c @@ -62,6 +62,12 @@ static int udp_sock(const char *ifname) goto err; #if 0 + /* we cannot bind, since the response packets don't come from + * the broadcast address */ + sa.sin_family = AF_INET; + sa.sin_port = htons(3006); + inet_aton("255.255.255.255", &sa.sin_addr); + rc = connect(fd, (struct sockaddr *)&sa, sizeof(sa)); if (rc < 0) goto err; @@ -127,6 +133,13 @@ static int read_response(int fd) if (len < 0) return len; + /* 2 bytes length, 1 byte protocol (0xfe) */ + if (buf[2] != 0xfe) + return 0; + + if (buf[4] != IPAC_MSGT_ID_RESP) + return 0; + return parse_response(buf+6, len-6); } |