diff options
| author |  Jeffrey Hutzelman <jhutz@cmu.edu> | 2013-02-16 23:02:36 -0500 |
|---|---|---|
| committer |  Karl Ramm <kcr@1ts.org> | 2013-02-16 23:15:48 -0500 |
| commit | 9ec3d325048ab72c6f6e037820e33aa8538b7b51 (patch) | |
| tree | 0b0d9360d4bb6087be3a178e31cc233b3c48f148 /lib | |
| parent | 3a81b9732b089c7431013d02a99c911b9241e6ca (diff) | |
Don't try to checksum with NULL creds
If we have no Kerberos credentials, we cannot create a checksum.
This can happen if, for example, we end up with an expired TGT.
In this case, instead of crashing, just leave the zero checksum.
This fixes #80
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/ZMkAuth.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/ZMkAuth.c b/lib/ZMkAuth.c index 8989481..8d7ea0c 100644 --- a/lib/ZMkAuth.c +++ b/lib/ZMkAuth.c @@ -123,7 +123,7 @@ ZMakeZcodeRealmAuthentication(register ZNotice_t *notice, krb5_auth_context authctx; krb5_data *authent; char *cksum_start, *cstart, *cend; - int cksum_len, zcode_len = 0, phdr_adj; + int cksum_len, zcode_len = 0, phdr_adj = 0; notice->z_ascii_authent = NULL; @@ -167,7 +167,7 @@ ZMakeZcodeRealmAuthentication(register ZNotice_t *notice, result = Z_NewFormatRawHeader(notice, buffer, buffer_len, phdr_len, &cksum_start, &cksum_len, &cstart, &cend); notice->z_authent_len = 0; - if (!result) + if (!result && creds != NULL) result = Z_InsertZcodeChecksum(keyblock, notice, buffer, cksum_start, cksum_len, cstart, cend, buffer_len, &phdr_adj, 0); |