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r11413: More comments, plus always check (and update) the credentials chain,

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regardless the authentication result on a particular user.

Andrew Bartlett
(This used to be commit 2ee7ed000e)
This commit is contained in:
Andrew Bartlett 2005-10-31 06:01:55 +00:00 committed by Gerald (Jerry) Carter
parent ceff9881e4
commit 55c6d93184
1 changed files with 33 additions and 5 deletions
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38
source4/winbind/wb_pam_auth.c
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@ -28,6 +28,7 @@
#include "smbd/service_stream.h"
#include "libcli/auth/credentials.h"
/* Oh, there is so much to keep an eye on when authenticating a user. Oh my! */
struct pam_auth_crap_state {
struct composite_context *ctx;
struct event_context *event_ctx;
@ -51,6 +52,14 @@ static struct composite_context *crap_samlogon_send_req(struct wbsrv_domain *dom
void *p);
static NTSTATUS crap_samlogon_recv_req(struct composite_context *ctx, void *p);
/* NTLM authentication.
Fill parameters into a control block to pass to the next function.
No application logic, this is done by the helper function paramters
to wb_domain_request_send()
*/
struct composite_context *wb_cmd_pam_auth_crap_send(struct wbsrv_call *call,
uint32_t logon_parameters,
const char *domain,
@ -104,6 +113,11 @@ struct composite_context *wb_cmd_pam_auth_crap_send(struct wbsrv_call *call,
return NULL;
}
/*
NTLM Authentication
Send of a SamLogon request to authenticate a user.
*/
static struct composite_context *crap_samlogon_send_req(struct wbsrv_domain *domain,
void *p)
{
@ -149,6 +163,11 @@ static struct composite_context *crap_samlogon_send_req(struct wbsrv_domain *dom
state, &state->r);
}
/*
NTLM Authentication
Check the SamLogon reply, decrypt and parse out the session keys and the info3 structure
*/
static NTSTATUS crap_samlogon_recv_req(struct composite_context *ctx,
void *p)
{
@ -161,9 +180,6 @@ static NTSTATUS crap_samlogon_recv_req(struct composite_context *ctx,
status = composite_netr_LogonSamLogon_recv(ctx);
if (!NT_STATUS_IS_OK(status)) return status;
status = state->r.out.result;
if (!NT_STATUS_IS_OK(status)) return status;
if ((state->r.out.return_authenticator == NULL) ||
(!creds_client_check(state->creds_state,
&state->r.out.return_authenticator->cred))) {
@ -171,6 +187,12 @@ static NTSTATUS crap_samlogon_recv_req(struct composite_context *ctx,
return NT_STATUS_ACCESS_DENIED;
}
status = state->r.out.result;
if (!NT_STATUS_IS_OK(status)) return status;
/* Decrypt the session keys before we reform the info3, so the
* person on the other end of winbindd pipe doesn't have to.
* They won't have the encryption key anyway */
creds_decrypt_samlogon(state->creds_state,
state->r.in.validation_level,
&state->r.out.validation);
@ -180,13 +202,17 @@ static NTSTATUS crap_samlogon_recv_req(struct composite_context *ctx,
state->r.out.validation.sam3,
(ndr_push_flags_fn_t)ndr_push_netr_SamInfo3);
NT_STATUS_NOT_OK_RETURN(status);
/* The Samba3 protocol is a bit broken (due to non-IDL
* heritage, so for compatability we must add a non-zero 4
* bytes to the info3 */
state->info3 = data_blob_talloc(state, NULL, tmp_blob.length+4);
NT_STATUS_HAVE_NO_MEMORY(state->info3.data);
SIVAL(state->info3.data, 0, 1);
memcpy(state->info3.data+4, tmp_blob.data, tmp_blob.length);
/* We actually only ask for level 3, and assume it above, but anyway... */
base = NULL;
switch(state->r.in.validation_level) {
case 2:
@ -206,7 +232,9 @@ static NTSTATUS crap_samlogon_recv_req(struct composite_context *ctx,
state->user_session_key = base->key;
state->lm_key = base->LMSessKey;
/* Give the caller the most accurate username possible */
/* Give the caller the most accurate username possible.
* Assists where case sensitive comparisons may be done by our
* ntlm_auth callers */
if (base->account_name.string) {
state->user_name = base->account_name.string;
talloc_steal(state, base->account_name.string);