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Diffstat (limited to 'auth/ntlmssp/ntlmssp_server.c')
-rw-r--r--auth/ntlmssp/ntlmssp_server.c112
1 files changed, 95 insertions, 17 deletions
diff --git a/auth/ntlmssp/ntlmssp_server.c b/auth/ntlmssp/ntlmssp_server.c
index 2faac72e6f..03e3703e29 100644
--- a/auth/ntlmssp/ntlmssp_server.c
+++ b/auth/ntlmssp/ntlmssp_server.c
@@ -28,6 +28,7 @@
#include "../libcli/auth/libcli_auth.h"
#include "../lib/crypto/crypto.h"
#include "auth/gensec/gensec.h"
+#include "auth/common_auth.h"
/**
* Determine correct target name flags for reply, given server role
@@ -75,6 +76,7 @@ NTSTATUS gensec_ntlmssp_server_negotiate(struct gensec_security *gensec_security
talloc_get_type_abort(gensec_security->private_data,
struct gensec_ntlmssp_context);
struct ntlmssp_state *ntlmssp_state = gensec_ntlmssp->ntlmssp_state;
+ struct auth4_context *auth_context = gensec_security->auth_context;
DATA_BLOB struct_blob;
uint32_t neg_flags = 0;
uint32_t ntlmssp_command, chal_flags;
@@ -117,16 +119,23 @@ NTSTATUS gensec_ntlmssp_server_negotiate(struct gensec_security *gensec_security
ntlmssp_handle_neg_flags(ntlmssp_state, neg_flags, ntlmssp_state->allow_lm_key);
/* Ask our caller what challenge they would like in the packet */
- status = ntlmssp_state->get_challenge(ntlmssp_state, cryptkey);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(1, ("ntlmssp_server_negotiate: backend doesn't give a challenge: %s\n",
- nt_errstr(status)));
- return status;
+ if (auth_context->get_ntlm_challenge) {
+ status = auth_context->get_ntlm_challenge(auth_context, cryptkey);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(1, ("gensec_ntlmssp_server_negotiate: failed to get challenge: %s\n",
+ nt_errstr(status)));
+ return status;
+ }
+ } else {
+ DEBUG(1, ("gensec_ntlmssp_server_negotiate: backend doesn't give a challenge\n"));
+ return NT_STATUS_NOT_IMPLEMENTED;
}
/* Check if we may set the challenge */
- if (!ntlmssp_state->may_set_challenge(ntlmssp_state)) {
- ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_NTLM2;
+ if (auth_context->challenge_may_be_modified) {
+ if (!auth_context->challenge_may_be_modified(auth_context)) {
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_NTLM2;
+ }
}
/* The flags we send back are not just the negotiated flags,
@@ -254,10 +263,13 @@ struct ntlmssp_server_auth_state {
* @return Errors or NT_STATUS_OK.
*/
-static NTSTATUS ntlmssp_server_preauth(struct ntlmssp_state *ntlmssp_state,
+static NTSTATUS ntlmssp_server_preauth(struct gensec_security *gensec_security,
+ struct gensec_ntlmssp_context *gensec_ntlmssp,
struct ntlmssp_server_auth_state *state,
const DATA_BLOB request)
{
+ struct ntlmssp_state *ntlmssp_state = gensec_ntlmssp->ntlmssp_state;
+ struct auth4_context *auth_context = gensec_security->auth_context;
uint32_t ntlmssp_command, auth_flags;
NTSTATUS nt_status;
@@ -376,15 +388,23 @@ static NTSTATUS ntlmssp_server_preauth(struct ntlmssp_state *ntlmssp_state,
MD5Update(&md5_session_nonce_ctx, state->session_nonce, 16);
MD5Final(session_nonce_hash, &md5_session_nonce_ctx);
- ntlmssp_state->chal = data_blob_talloc(
- ntlmssp_state, session_nonce_hash, 8);
-
/* LM response is no longer useful */
data_blob_free(&ntlmssp_state->lm_resp);
/* We changed the effective challenge - set it */
- if (!NT_STATUS_IS_OK(nt_status = ntlmssp_state->set_challenge(ntlmssp_state, &ntlmssp_state->chal))) {
- return nt_status;
+ if (auth_context->set_ntlm_challenge) {
+ nt_status = auth_context->set_ntlm_challenge(auth_context,
+ session_nonce_hash,
+ "NTLMSSP callback (NTLM2)");
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ DEBUG(1, ("gensec_ntlmssp_server_negotiate: failed to get challenge: %s\n",
+ nt_errstr(nt_status)));
+ return nt_status;
+ }
+ } else {
+ DEBUG(1, ("gensec_ntlmssp_server_negotiate: backend doesn't have facility for challenge to be set\n"));
+
+ return NT_STATUS_NOT_IMPLEMENTED;
}
/* LM Key is incompatible. */
@@ -395,6 +415,62 @@ static NTSTATUS ntlmssp_server_preauth(struct ntlmssp_state *ntlmssp_state,
}
/**
+ * Check the password on an NTLMSSP login.
+ *
+ * Return the session keys used on the connection.
+ */
+
+static NTSTATUS ntlmssp_server_check_password(struct gensec_security *gensec_security,
+ struct gensec_ntlmssp_context *gensec_ntlmssp,
+ TALLOC_CTX *mem_ctx,
+ DATA_BLOB *user_session_key, DATA_BLOB *lm_session_key)
+{
+ struct ntlmssp_state *ntlmssp_state = gensec_ntlmssp->ntlmssp_state;
+ struct auth4_context *auth_context = gensec_ntlmssp->gensec_security->auth_context;
+ NTSTATUS nt_status = NT_STATUS_NOT_IMPLEMENTED;
+ struct auth_usersupplied_info *user_info;
+
+ user_info = talloc_zero(ntlmssp_state, struct auth_usersupplied_info);
+ if (!user_info) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ user_info->logon_parameters = MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT | MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT;
+ user_info->flags = 0;
+ user_info->mapped_state = false;
+ user_info->client.account_name = ntlmssp_state->user;
+ user_info->client.domain_name = ntlmssp_state->domain;
+ user_info->workstation_name = ntlmssp_state->client.netbios_name;
+ user_info->remote_host = gensec_get_remote_address(gensec_ntlmssp->gensec_security);
+
+ user_info->password_state = AUTH_PASSWORD_RESPONSE;
+ user_info->password.response.lanman = ntlmssp_state->lm_resp;
+ user_info->password.response.lanman.data = talloc_steal(user_info, ntlmssp_state->lm_resp.data);
+ user_info->password.response.nt = ntlmssp_state->nt_resp;
+ user_info->password.response.nt.data = talloc_steal(user_info, ntlmssp_state->nt_resp.data);
+
+ if (auth_context->check_ntlm_password) {
+ nt_status = auth_context->check_ntlm_password(auth_context,
+ gensec_ntlmssp,
+ user_info,
+ &gensec_ntlmssp->server_returned_info,
+ user_session_key, lm_session_key);
+ }
+ talloc_free(user_info);
+
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ DEBUG(5, (__location__ ": Checking NTLMSSP password for %s\\%s failed: %s\n", user_info->client.domain_name, user_info->client.account_name, nt_errstr(nt_status)));
+ }
+
+ NT_STATUS_NOT_OK_RETURN(nt_status);
+
+ talloc_steal(mem_ctx, user_session_key->data);
+ talloc_steal(mem_ctx, lm_session_key->data);
+
+ return nt_status;
+}
+
+/**
* Next state function for the Authenticate packet
* (after authentication - figures out the session keys etc)
*
@@ -402,9 +478,11 @@ static NTSTATUS ntlmssp_server_preauth(struct ntlmssp_state *ntlmssp_state,
* @return Errors or NT_STATUS_OK.
*/
-static NTSTATUS ntlmssp_server_postauth(struct ntlmssp_state *ntlmssp_state,
+static NTSTATUS ntlmssp_server_postauth(struct gensec_security *gensec_security,
+ struct gensec_ntlmssp_context *gensec_ntlmssp,
struct ntlmssp_server_auth_state *state)
{
+ struct ntlmssp_state *ntlmssp_state = gensec_ntlmssp->ntlmssp_state;
DATA_BLOB user_session_key = state->user_session_key;
DATA_BLOB lm_session_key = state->lm_session_key;
NTSTATUS nt_status = NT_STATUS_OK;
@@ -558,7 +636,7 @@ NTSTATUS gensec_ntlmssp_server_auth(struct gensec_security *gensec_security,
return NT_STATUS_NO_MEMORY;
}
- nt_status = ntlmssp_server_preauth(ntlmssp_state, state, in);
+ nt_status = ntlmssp_server_preauth(gensec_security, gensec_ntlmssp, state, in);
if (!NT_STATUS_IS_OK(nt_status)) {
TALLOC_FREE(state);
return nt_status;
@@ -572,7 +650,7 @@ NTSTATUS gensec_ntlmssp_server_auth(struct gensec_security *gensec_security,
*/
/* Finally, actually ask if the password is OK */
- nt_status = ntlmssp_state->check_password(ntlmssp_state,
+ nt_status = ntlmssp_server_check_password(gensec_security, gensec_ntlmssp,
state,
&state->user_session_key,
&state->lm_session_key);
@@ -589,7 +667,7 @@ NTSTATUS gensec_ntlmssp_server_auth(struct gensec_security *gensec_security,
ntlmssp_state->check_password, the ntlmssp_server_postpath
can be done in a callback */
- nt_status = ntlmssp_server_postauth(ntlmssp_state, state);
+ nt_status = ntlmssp_server_postauth(gensec_security, gensec_ntlmssp, state);
TALLOC_FREE(state);
return nt_status;
}
generated by cgit (git 2.34.1) at 2024-11-05 20:08:43 +0000