void winbindd_ccache_ntlm_auth(struct winbindd_cli_state *state)
{
struct winbindd_domain *domain;
fstring name_domain, name_user;
NTSTATUS result = NT_STATUS_NOT_SUPPORTED;
struct WINBINDD_MEMORY_CREDS *entry;
DATA_BLOB initial, challenge, auth;
uint32_t initial_blob_len, challenge_blob_len, extra_len;
/* Ensure null termination */
state->request->data.ccache_ntlm_auth.user[
sizeof(state->request->data.ccache_ntlm_auth.user)-1]='\0';
DEBUG(3, ("[%5lu]: perform NTLM auth on behalf of user %s\n", (unsigned long)state->pid,
state->request->data.ccache_ntlm_auth.user));
/* Parse domain and username */
if (!canonicalize_username(state->request->data.ccache_ntlm_auth.user,
name_domain, name_user)) {
DEBUG(5,("winbindd_ccache_ntlm_auth: cannot parse domain and user from name [%s]\n",
state->request->data.ccache_ntlm_auth.user));
request_error(state);
return;
}
domain = find_auth_domain(state->request->flags, name_domain);
if (domain == NULL) {
DEBUG(5,("winbindd_ccache_ntlm_auth: can't get domain [%s]\n",
name_domain));
request_error(state);
return;
}
if (!check_client_uid(state, state->request->data.ccache_ntlm_auth.uid)) {
request_error(state);
return;
}
/* validate blob lengths */
initial_blob_len = state->request->data.ccache_ntlm_auth.initial_blob_len;
challenge_blob_len = state->request->data.ccache_ntlm_auth.challenge_blob_len;
extra_len = state->request->extra_len;
if (initial_blob_len > extra_len || challenge_blob_len > extra_len ||
initial_blob_len + challenge_blob_len > extra_len ||
initial_blob_len + challenge_blob_len < initial_blob_len ||
initial_blob_len + challenge_blob_len < challenge_blob_len) {
DEBUG(10,("winbindd_dual_ccache_ntlm_auth: blob lengths overrun "
"or wrap. Buffer [%d+%d > %d]\n",
initial_blob_len,
challenge_blob_len,
extra_len));
goto process_result;
}
/* Parse domain and username */
if (!parse_domain_user(state->request->data.ccache_ntlm_auth.user, name_domain, name_user)) {
DEBUG(10,("winbindd_dual_ccache_ntlm_auth: cannot parse "
"domain and user from name [%s]\n",
state->request->data.ccache_ntlm_auth.user));
goto process_result;
}
entry = find_memory_creds_by_name(state->request->data.ccache_ntlm_auth.user);
if (entry == NULL || entry->nt_hash == NULL || entry->lm_hash == NULL) {
DEBUG(10,("winbindd_dual_ccache_ntlm_auth: could not find "
"credentials for user %s\n",
state->request->data.ccache_ntlm_auth.user));
goto process_result;
}
DEBUG(10,("winbindd_dual_ccache_ntlm_auth: found ccache [%s]\n", entry->username));
if (!client_can_access_ccache_entry(state->request->data.ccache_ntlm_auth.uid, entry)) {
goto process_result;
}
if (initial_blob_len == 0 && challenge_blob_len == 0) {
/* this is just a probe to see if credentials are available. */
result = NT_STATUS_OK;
state->response->data.ccache_ntlm_auth.auth_blob_len = 0;
goto process_result;
}
initial = data_blob_const(state->request->extra_data.data,
initial_blob_len);
challenge = data_blob_const(
state->request->extra_data.data + initial_blob_len,
state->request->data.ccache_ntlm_auth.challenge_blob_len);
result = do_ntlm_auth_with_stored_pw(
name_user, name_domain, entry->pass,
initial, challenge, &auth,
state->response->data.ccache_ntlm_auth.session_key);
if (!NT_STATUS_IS_OK(result)) {
goto process_result;
}
state->response->extra_data.data = talloc_memdup(
state->mem_ctx, auth.data, auth.length);
if (!state->response->extra_data.data) {
result = NT_STATUS_NO_MEMORY;
goto process_result;
}
state->response->length += auth.length;
state->response->data.ccache_ntlm_auth.auth_blob_len = auth.length;
data_blob_free(&auth);
process_result:
if (!NT_STATUS_IS_OK(result)) {
request_error(state);
return;
}
request_ok(state);
}
enum winbindd_result winbindd_dual_ccache_ntlm_auth(struct winbindd_domain *domain,
struct winbindd_cli_state *state)
{
NTSTATUS result = NT_STATUS_NOT_SUPPORTED;
struct WINBINDD_MEMORY_CREDS *entry;
DATA_BLOB initial, challenge, auth;
fstring name_domain, name_user;
uint32 initial_blob_len, challenge_blob_len, extra_len;
/* Ensure null termination */
state->request.data.ccache_ntlm_auth.user[
sizeof(state->request.data.ccache_ntlm_auth.user)-1]='\0';
DEBUG(3, ("winbindd_dual_ccache_ntlm_auth: [%5lu]: perform NTLM auth on "
"behalf of user %s (dual)\n", (unsigned long)state->pid,
state->request.data.ccache_ntlm_auth.user));
/* validate blob lengths */
initial_blob_len = state->request.data.ccache_ntlm_auth.initial_blob_len;
challenge_blob_len = state->request.data.ccache_ntlm_auth.challenge_blob_len;
extra_len = state->request.extra_len;
if (initial_blob_len > extra_len || challenge_blob_len > extra_len ||
initial_blob_len + challenge_blob_len > extra_len ||
initial_blob_len + challenge_blob_len < initial_blob_len ||
initial_blob_len + challenge_blob_len < challenge_blob_len) {
DEBUG(10,("winbindd_dual_ccache_ntlm_auth: blob lengths overrun "
"or wrap. Buffer [%d+%d > %d]\n",
initial_blob_len,
challenge_blob_len,
extra_len));
goto process_result;
}
/* Parse domain and username */
if (!parse_domain_user(state->request.data.ccache_ntlm_auth.user, name_domain, name_user)) {
DEBUG(10,("winbindd_dual_ccache_ntlm_auth: cannot parse "
"domain and user from name [%s]\n",
state->request.data.ccache_ntlm_auth.user));
goto process_result;
}
entry = find_memory_creds_by_name(state->request.data.ccache_ntlm_auth.user);
if (entry == NULL || entry->nt_hash == NULL || entry->lm_hash == NULL) {
DEBUG(10,("winbindd_dual_ccache_ntlm_auth: could not find "
"credentials for user %s\n",
state->request.data.ccache_ntlm_auth.user));
goto process_result;
}
DEBUG(10,("winbindd_dual_ccache_ntlm_auth: found ccache [%s]\n", entry->username));
if (!client_can_access_ccache_entry(state->request.data.ccache_ntlm_auth.uid, entry)) {
goto process_result;
}
if (initial_blob_len == 0 && challenge_blob_len == 0) {
/* this is just a probe to see if credentials are available. */
result = NT_STATUS_OK;
state->response.data.ccache_ntlm_auth.auth_blob_len = 0;
goto process_result;
}
initial = data_blob(state->request.extra_data.data, initial_blob_len);
challenge = data_blob(state->request.extra_data.data + initial_blob_len,
state->request.data.ccache_ntlm_auth.challenge_blob_len);
if (!initial.data || !challenge.data) {
result = NT_STATUS_NO_MEMORY;
} else {
result = do_ntlm_auth_with_hashes(name_user, name_domain,
entry->lm_hash, entry->nt_hash,
initial, challenge, &auth);
}
data_blob_free(&initial);
data_blob_free(&challenge);
if (!NT_STATUS_IS_OK(result)) {
goto process_result;
}
state->response.extra_data.data = smb_xmemdup(auth.data, auth.length);
if (!state->response.extra_data.data) {
result = NT_STATUS_NO_MEMORY;
goto process_result;
}
state->response.length += auth.length;
state->response.data.ccache_ntlm_auth.auth_blob_len = auth.length;
data_blob_free(&auth);
process_result:
return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
}
