diff options
Diffstat (limited to 'proto/rip/auth.c')
| -rw-r--r-- | proto/rip/auth.c | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/proto/rip/auth.c b/proto/rip/auth.c index 2477448..dbfdf8b 100644 --- a/proto/rip/auth.c +++ b/proto/rip/auth.c @@ -19,6 +19,7 @@ #include "lib/resource.h" #include "lib/lists.h" #include "lib/timer.h" +#include "lib/md5.h" #include "rip.h" @@ -47,10 +48,28 @@ rip_incoming_authentication( struct proto *p, struct rip_block_auth *block, stru DBG( "md5 password" ); { struct password_item *head; + struct rip_md5_tail *tail; + + tail = (char *) packet + (block->packetlen - sizeof(struct rip_block_auth)); + head = P_CF->passwords; while (head) { - if (head->id == block->keyid) - /* Perform md5 + compare */; + if (head->id == block->keyid) { + struct MD5Context ctxt; + int i; + char md5sum_packet[16]; + char md5sum_computed[16]; + + memcpy(md5sum_packet, tail->md5, i); + password_strncpy(tail->md5, head->password, 16); + + MD5Init(&ctxt); + MD5Update(&ctxt, packet, block->packetlen ); + MD5Final(md5sum_computed, &ctxt); + + if (memcmp(md5sum_packet, md5sum_computed, 16)) + return 1; + } head = head->next; } return 1; @@ -72,7 +91,7 @@ rip_outgoing_authentication( struct proto *p, struct rip_block_auth *block, stru log( L_ERR "no passwords set and password authentication requested\n" ); return; } - strncpy( (char *) (&block->packetlen), P_CF->passwords->password, 16); + password_strncpy( (char *) (&block->packetlen), P_CF->passwords->password, 16); return; } } |