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wbinfo: avoid segfault in wbinfo_auth_crap() if winbindd is not available

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Bug: https://bugzilla.samba.org/show_bug.cgi?id=13256

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
This commit is contained in:
Stefan Metzmacher 2018-02-04 22:48:01 +01:00 committed by Ralph Boehme
parent b112cbc246
commit 8b0e1a77ae
1 changed files with 11 additions and 2 deletions
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13
nsswitch/wbinfo.c
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@ -1798,13 +1798,22 @@ static bool wbinfo_auth_crap(char *username, bool use_ntlmv2, bool use_lanman)
if (use_ntlmv2) { if (use_ntlmv2) {
DATA_BLOB server_chal; DATA_BLOB server_chal;
DATA_BLOB names_blob; DATA_BLOB names_blob;
const char *netbios_name = NULL;
const char *domain = NULL;
netbios_name = get_winbind_netbios_name(),
domain = get_winbind_domain();
if (domain == NULL) {
d_fprintf(stderr, "Failed to get domain from winbindd\n");
return false;
}
server_chal = data_blob(params.password.response.challenge, 8); server_chal = data_blob(params.password.response.challenge, 8);
/* Pretend this is a login to 'us', for blob purposes */ /* Pretend this is a login to 'us', for blob purposes */
names_blob = NTLMv2_generate_names_blob(NULL, names_blob = NTLMv2_generate_names_blob(NULL,
get_winbind_netbios_name(), netbios_name,
get_winbind_domain()); domain);
if (pass != NULL && if (pass != NULL &&
!SMBNTLMv2encrypt(NULL, name_user, name_domain, pass, !SMBNTLMv2encrypt(NULL, name_user, name_domain, pass,