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Diffstat (limited to 'source3/nsswitch/winbindd_pam.c')
-rw-r--r--source3/nsswitch/winbindd_pam.c276
1 files changed, 276 insertions, 0 deletions
diff --git a/source3/nsswitch/winbindd_pam.c b/source3/nsswitch/winbindd_pam.c
new file mode 100644
index 0000000000..f7959c2feb
--- /dev/null
+++ b/source3/nsswitch/winbindd_pam.c
@@ -0,0 +1,276 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ Winbind daemon - pam auth funcions
+
+ Copyright (C) Andrew Tridgell 2000
+ Copyright (C) Tim Potter 2001
+ Copyright (C) Andrew Bartlett 2001-2002
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "winbindd.h"
+
+/* Return a password structure from a username. */
+
+enum winbindd_result winbindd_pam_auth(struct winbindd_cli_state *state)
+{
+ NTSTATUS result;
+ fstring name_domain, name_user;
+ int passlen;
+ unsigned char trust_passwd[16];
+ time_t last_change_time;
+ uint32 smb_uid_low;
+ NET_USER_INFO_3 info3;
+ struct cli_state *cli = NULL;
+ uchar chal[8];
+ TALLOC_CTX *mem_ctx = NULL;
+ DATA_BLOB lm_resp;
+ DATA_BLOB nt_resp;
+
+ extern pstring global_myname;
+
+ DEBUG(3, ("[%5d]: pam auth %s\n", state->pid,
+ state->request.data.auth.user));
+
+ if (!(mem_ctx = talloc_init_named("winbind pam auth for %s", state->request.data.auth.user))) {
+ DEBUG(0, ("winbindd_pam_auth: could not talloc_init()!\n"));
+ result = NT_STATUS_NO_MEMORY;
+ goto done;
+ }
+
+ /* Parse domain and username */
+
+ if (!parse_domain_user(state->request.data.auth.user, name_domain,
+ name_user)) {
+ DEBUG(5,("no domain separator (%s) in username (%s) - failing auth\n", lp_winbind_separator(), state->request.data.auth.user));
+ result = NT_STATUS_INVALID_PARAMETER;
+ goto done;
+ }
+
+ passlen = strlen(state->request.data.auth.pass);
+
+ {
+ unsigned char local_lm_response[24];
+ unsigned char local_nt_response[24];
+
+ generate_random_buffer(chal, 8, False);
+ SMBencrypt( (const uchar *)state->request.data.auth.pass, chal, local_lm_response);
+
+ SMBNTencrypt((const uchar *)state->request.data.auth.pass, chal, local_nt_response);
+
+ lm_resp = data_blob_talloc(mem_ctx, local_lm_response, sizeof(local_lm_response));
+ nt_resp = data_blob_talloc(mem_ctx, local_nt_response, sizeof(local_nt_response));
+ }
+
+ /*
+ * Get the machine account password for our primary domain
+ */
+
+ if (!secrets_fetch_trust_account_password(
+ lp_workgroup(), trust_passwd, &last_change_time)) {
+ DEBUG(0, ("winbindd_pam_auth: could not fetch trust account "
+ "password for domain %s\n", lp_workgroup()));
+ result = NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
+ goto done;
+ }
+
+ /* We really don't care what LUID we give the user. */
+
+ generate_random_buffer( (unsigned char *)&smb_uid_low, 4, False);
+
+ ZERO_STRUCT(info3);
+
+ /* Don't shut this down - it belongs to the connection cache code */
+ result = cm_get_netlogon_cli(lp_workgroup(), trust_passwd, &cli);
+
+ if (!NT_STATUS_IS_OK(result)) {
+ DEBUG(3, ("could not open handle to NETLOGON pipe\n"));
+ goto done;
+ }
+
+ result = cli_netlogon_sam_network_logon(cli, mem_ctx,
+ name_user, name_domain,
+ global_myname, chal,
+ lm_resp, nt_resp,
+ &info3);
+
+ uni_group_cache_store_netlogon(mem_ctx, &info3);
+done:
+
+ state->response.data.auth.nt_status = NT_STATUS_V(result);
+ fstrcpy(state->response.data.auth.nt_status_string, nt_errstr(result));
+ fstrcpy(state->response.data.auth.error_string, nt_errstr(result));
+ state->response.data.auth.pam_error = nt_status_to_pam(result);
+
+ DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2, ("Plain-text authenticaion for user %s returned %s (PAM: %d)\n",
+ state->request.data.auth.user,
+ state->response.data.auth.nt_status_string,
+ state->response.data.auth.pam_error));
+
+ if (mem_ctx)
+ talloc_destroy(mem_ctx);
+
+ return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
+}
+
+/* Challenge Response Authentication Protocol */
+
+enum winbindd_result winbindd_pam_auth_crap(struct winbindd_cli_state *state)
+{
+ NTSTATUS result;
+ unsigned char trust_passwd[16];
+ time_t last_change_time;
+ NET_USER_INFO_3 info3;
+ struct cli_state *cli = NULL;
+ TALLOC_CTX *mem_ctx = NULL;
+ const char *domain = NULL;
+
+ DATA_BLOB lm_resp, nt_resp;
+
+ extern pstring global_myname;
+
+ DEBUG(3, ("[%5d]: pam auth crap domain: %s user: %s\n", state->pid,
+ state->request.data.auth_crap.domain, state->request.data.auth_crap.user));
+
+ if (!(mem_ctx = talloc_init_named("winbind pam auth crap for %s", state->request.data.auth.user))) {
+ DEBUG(0, ("winbindd_pam_auth_crap: could not talloc_init()!\n"));
+ result = NT_STATUS_NO_MEMORY;
+ goto done;
+ }
+
+ if (*state->request.data.auth_crap.domain) {
+ domain = talloc_strdup(mem_ctx, state->request.data.auth_crap.domain);
+ } else if (lp_winbind_use_default_domain()) {
+ domain = talloc_strdup(mem_ctx, lp_workgroup());
+ } else {
+ DEBUG(5,("no domain specified with username (%s) - failing auth\n", state->request.data.auth.user));
+ result = NT_STATUS_INVALID_PARAMETER;
+ goto done;
+ }
+
+ if (!domain) {
+ DEBUG(0,("winbindd_pam_auth_crap: talloc_strdup failed!\n"));
+ result = NT_STATUS_NO_MEMORY;
+ goto done;
+ }
+
+ lm_resp = data_blob_talloc(mem_ctx, state->request.data.auth_crap.lm_resp, state->request.data.auth_crap.lm_resp_len);
+ nt_resp = data_blob_talloc(mem_ctx, state->request.data.auth_crap.nt_resp, state->request.data.auth_crap.nt_resp_len);
+
+ /*
+ * Get the machine account password for our primary domain
+ */
+
+ if (!secrets_fetch_trust_account_password(
+ lp_workgroup(), trust_passwd, &last_change_time)) {
+ DEBUG(0, ("winbindd_pam_auth: could not fetch trust account "
+ "password for domain %s\n", lp_workgroup()));
+ result = NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
+ goto done;
+ }
+
+ ZERO_STRUCT(info3);
+
+ /* Don't shut this down - it belongs to the connection cache code */
+ result = cm_get_netlogon_cli(lp_workgroup(), trust_passwd, &cli);
+
+ if (!NT_STATUS_IS_OK(result)) {
+ DEBUG(3, ("could not open handle to NETLOGON pipe (error: %s)\n", nt_errstr(result)));
+ goto done;
+ }
+
+ result = cli_netlogon_sam_network_logon(cli, mem_ctx,
+ state->request.data.auth_crap.user, domain,
+ global_myname, state->request.data.auth_crap.chal,
+ lm_resp, nt_resp,
+ &info3);
+
+ if (NT_STATUS_IS_OK(result)) {
+ uni_group_cache_store_netlogon(mem_ctx, &info3);
+ }
+
+done:
+
+ state->response.data.auth.nt_status = NT_STATUS_V(result);
+ fstrcpy(state->response.data.auth.nt_status_string, nt_errstr(result));
+ fstrcpy(state->response.data.auth.error_string, nt_errstr(result));
+ state->response.data.auth.pam_error = nt_status_to_pam(result);
+
+ DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2, ("NTLM CRAP authenticaion for user [%s]\\[%s] returned %s (PAM: %d)\n",
+ state->request.data.auth_crap.domain,
+ state->request.data.auth_crap.user,
+ state->response.data.auth.nt_status_string,
+ state->response.data.auth.pam_error));
+
+ if (mem_ctx)
+ talloc_destroy(mem_ctx);
+
+ return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
+}
+
+/* Change a user password */
+
+enum winbindd_result winbindd_pam_chauthtok(struct winbindd_cli_state *state)
+{
+ NTSTATUS result;
+ char *oldpass, *newpass;
+ fstring domain, user;
+ CLI_POLICY_HND *hnd;
+
+ DEBUG(3, ("[%5d]: pam chauthtok %s\n", state->pid,
+ state->request.data.chauthtok.user));
+
+ /* Setup crap */
+
+ if (state == NULL)
+ return WINBINDD_ERROR;
+
+ if (!parse_domain_user(state->request.data.chauthtok.user, domain,
+ user)) {
+ result = NT_STATUS_INVALID_PARAMETER;
+ goto done;
+ }
+
+ /* Change password */
+
+ oldpass = state->request.data.chauthtok.oldpass;
+ newpass = state->request.data.chauthtok.newpass;
+
+ /* Get sam handle */
+
+ if (!(hnd = cm_get_sam_handle(domain))) {
+ DEBUG(1, ("could not get SAM handle on DC for %s\n", domain));
+ result = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
+ goto done;
+ }
+
+ if (!cli_oem_change_password(hnd->cli, user, newpass, oldpass)) {
+ DEBUG(1, ("password change failed for user %s/%s\n", domain,
+ user));
+ result = NT_STATUS_WRONG_PASSWORD;
+ } else {
+ result = NT_STATUS_OK;
+ }
+
+done:
+ state->response.data.auth.nt_status = NT_STATUS_V(result);
+ fstrcpy(state->response.data.auth.nt_status_string, nt_errstr(result));
+ fstrcpy(state->response.data.auth.error_string, nt_errstr(result));
+ state->response.data.auth.pam_error = nt_status_to_pam(result);
+
+ return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
+}
generated by cgit (git 2.34.1) at 2024-12-22 11:25:39 +0000