/*
- Unix SMB/Netbios implementation.
- Version 3.0
+ Unix SMB/CIFS implementation.
- Winbind daemon - pam auuth funcions
+ 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
*/
#include "winbindd.h"
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_WINBIND
-extern pstring global_myname;
-/* Copy of parse_domain_user from winbindd_util.c. Parse a string of the
- form DOMAIN/user into a domain and a user */
-
-static void parse_domain_user(char *domuser, fstring domain, fstring user)
+static NTSTATUS append_info3_as_ndr(TALLOC_CTX *mem_ctx,
+ struct winbindd_cli_state *state,
+ NET_USER_INFO_3 *info3)
{
- char *p;
- char *sep = lp_winbind_separator();
- if (!sep) sep = "\\";
- p = strchr(domuser,*sep);
- if (!p) p = strchr(domuser,'\\');
- if (!p) {
- fstrcpy(domain,"");
- fstrcpy(user, domuser);
- return;
- }
-
- fstrcpy(user, p+1);
- fstrcpy(domain, domuser);
- domain[PTR_DIFF(p, domuser)] = 0;
- strupper(domain);
+ prs_struct ps;
+ uint32 size;
+ if (!prs_init(&ps, 256 /* Random, non-zero number */, mem_ctx, MARSHALL)) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ if (!net_io_user_info3("", info3, &ps, 1, 3)) {
+ prs_mem_free(&ps);
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ size = prs_data_size(&ps);
+ state->response.extra_data = malloc(size);
+ if (!state->response.extra_data) {
+ prs_mem_free(&ps);
+ return NT_STATUS_NO_MEMORY;
+ }
+ prs_copy_all_data_out(state->response.extra_data, &ps);
+ state->response.length += size;
+ prs_mem_free(&ps);
+ return NT_STATUS_OK;
}
-/* Return a password structure from a username. Specify whether cached data
- can be returned. */
+/* Return a password structure from a username. */
enum winbindd_result winbindd_pam_auth(struct winbindd_cli_state *state)
{
- BOOL result;
+ NTSTATUS result;
fstring name_domain, name_user;
- int passlen;
-
- unsigned char local_lm_response[24];
- unsigned char local_nt_response[24];
-
- auth_usersupplied_info user_info;
- auth_serversupplied_info server_info;
- AUTH_STR theirdomain, smb_username, wksta_name;
+ 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;
+
+ /* Ensure null termination */
+ state->request.data.auth.user[sizeof(state->request.data.auth.user)-1]='\0';
+
+ /* Ensure null termination */
+ state->request.data.auth.pass[sizeof(state->request.data.auth.pass)-1]='\0';
DEBUG(3, ("[%5d]: pam auth %s\n", state->pid,
state->request.data.auth.user));
+ if (!(mem_ctx = talloc_init("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;
+ }
+
+ {
+ unsigned char local_lm_response[24];
+ unsigned char local_nt_response[24];
+
+ generate_random_buffer(chal, 8, False);
+ SMBencrypt(state->request.data.auth.pass, chal, local_lm_response);
+
+ SMBNTencrypt(state->request.data.auth.pass, chal, local_nt_response);
- parse_domain_user(state->request.data.auth.user, name_domain,
- name_user);
+ 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;
+ }
- /* don't allow the null domain */
+ /* We really don't care what LUID we give the user. */
- if (strcmp(name_domain,"") == 0)
- return WINBINDD_ERROR;
+ generate_random_buffer( (unsigned char *)&smb_uid_low, 4, False);
- passlen = strlen(state->request.data.auth.pass);
-
- ZERO_STRUCT(user_info);
- ZERO_STRUCT(theirdomain);
- ZERO_STRUCT(smb_username);
- ZERO_STRUCT(wksta_name);
+ ZERO_STRUCT(info3);
- theirdomain.str = name_domain;
- theirdomain.len = strlen(theirdomain.str);
+ /* 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, get_friendly_nt_error_msg(result));
+ state->response.data.auth.pam_error = nt_status_to_pam(result);
- user_info.requested_domain = theirdomain;
- user_info.domain = theirdomain;
+ DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2, ("Plain-text authentication 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;
+}
- user_info.smb_username.str = name_user;
- user_info.smb_username.len = strlen(name_user);
+/* 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;
+ char *user = NULL;
+ const char *domain = NULL;
+ const char *contact_domain;
+ const char *workstation;
+
+ DATA_BLOB lm_resp, nt_resp;
+
+ /* Ensure null termination */
+ state->request.data.auth_crap.user[sizeof(state->request.data.auth_crap.user)-1]='\0';
+
+ /* Ensure null termination */
+ state->request.data.auth_crap.domain[sizeof(state->request.data.auth_crap.domain)-1]='\0';
+
+ if (!(mem_ctx = talloc_init("winbind pam auth crap for (utf8) %s", state->request.data.auth_crap.user))) {
+ DEBUG(0, ("winbindd_pam_auth_crap: could not talloc_init()!\n"));
+ result = NT_STATUS_NO_MEMORY;
+ goto done;
+ }
- user_info.requested_username.str = name_user;
- user_info.requested_username.len = strlen(name_user);
+ if (pull_utf8_talloc(mem_ctx, &user, state->request.data.auth_crap.user) == (size_t)-1) {
+ DEBUG(0, ("winbindd_pam_auth_crap: pull_utf8_talloc failed!\n"));
+ }
- user_info.wksta_name.str = global_myname;
- user_info.wksta_name.len = strlen(user_info.wksta_name.str);
+ if (*state->request.data.auth_crap.domain) {
+ char *dom = NULL;
+ if (pull_utf8_talloc(mem_ctx, &dom, state->request.data.auth_crap.domain) == (size_t)-1) {
+ DEBUG(0, ("winbindd_pam_auth_crap: pull_utf8_talloc failed!\n"));
+ }
+ domain = dom;
+ } else if (lp_winbind_use_default_domain()) {
+ domain = lp_workgroup();
+ } else {
+ DEBUG(5,("no domain specified with username (%s) - failing auth\n",
+ user));
+ result = NT_STATUS_INVALID_PARAMETER;
+ goto done;
+ }
- user_info.wksta_name = wksta_name;
+ DEBUG(3, ("[%5d]: pam auth crap domain: %s user: %s\n", state->pid,
+ domain, user));
- generate_random_buffer( user_info.chal, 8, False);
+ if (lp_allow_trusted_domains() && (state->request.data.auth_crap.flags & WINBIND_PAM_CONTACT_TRUSTDOM)) {
+ contact_domain = domain;
+ } else {
+ contact_domain = lp_workgroup();
+ }
- if (state->request.data.auth.pass) {
- SMBencrypt((uchar *)state->request.data.auth.pass, user_info.chal, local_lm_response);
- user_info.lm_resp.buffer = (uint8 *)local_lm_response;
- user_info.lm_resp.len = 24;
- SMBNTencrypt((uchar *)state->request.data.auth.pass, user_info.chal, local_nt_response);
- user_info.nt_resp.buffer = (uint8 *)local_nt_response;
- user_info.nt_resp.len = 24;
+ if (*state->request.data.auth_crap.workstation) {
+ char *wrk = NULL;
+ if (pull_utf8_talloc(mem_ctx, &wrk, state->request.data.auth_crap.workstation) == (size_t)-1) {
+ DEBUG(0, ("winbindd_pam_auth_crap: pull_utf8_talloc failed!\n"));
+ }
+ workstation = wrk;
} else {
- return WINBINDD_ERROR;
+ workstation = global_myname();
+ }
+
+ if (state->request.data.auth_crap.lm_resp_len > sizeof(state->request.data.auth_crap.lm_resp)
+ || state->request.data.auth_crap.nt_resp_len > sizeof(state->request.data.auth_crap.nt_resp)) {
+ DEBUG(0, ("winbindd_pam_auth_crap: invalid password length %u/%u\n",
+ state->request.data.auth_crap.lm_resp_len,
+ state->request.data.auth_crap.nt_resp_len));
+ result = NT_STATUS_INVALID_PARAMETER;
+ 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);
- /* So domain_client_validate() actually opens a new connection
- for each authentication performed. This can theoretically
- be optimised to use an already open IPC$ connection. */
+ /*
+ * Get the machine account password for the domain to contact.
+ * This is either our own domain for a workstation, or possibly
+ * any domain for a PDC with trusted domains.
+ */
+
+ if (!secrets_fetch_trust_account_password (
+ contact_domain, trust_passwd, &last_change_time)) {
+ DEBUG(0, ("winbindd_pam_auth: could not fetch trust account "
+ "password for domain %s\n", contact_domain));
+ 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(contact_domain, 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,
+ user, domain,
+ workstation, 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);
+ if (state->request.data.auth_crap.flags & WINBIND_PAM_INFO3_NDR) {
+ result = append_info3_as_ndr(mem_ctx, state, &info3);
+ }
- result = (domain_client_validate(&user_info, &server_info,
- server_state.controller) == NT_STATUS_NOPROBLEMO);
+#if 0
+ /* we don't currently do this stuff right */
+ /* Doing an assert in a daemon is going to be a pretty bad
+ idea. - tpot */
+ if (state->request.data.auth_crap.flags & WINBIND_PAM_NTKEY) {
+ SMB_ASSERT(sizeof(state->response.data.auth.nt_session_key) == sizeof(info3.user_sess_key));
+ memcpy(state->response.data.auth.nt_session_key, info3.user_sess_key, sizeof(state->response.data.auth.nt_session_key) /* 16 */);
+ }
+ if (state->request.data.auth_crap.flags & WINBIND_PAM_LMKEY) {
+ SMB_ASSERT(sizeof(state->response.data.auth.nt_session_key) <= sizeof(info3.user_sess_key));
+ memcpy(state->response.data.auth.first_8_lm_hash, info3.padding, sizeof(state->response.data.auth.nt_session_key) /* 16 */);
+ }
+#endif
+ }
+
+done:
- return result ? WINBINDD_OK : WINBINDD_ERROR;
+ state->response.data.auth.nt_status = NT_STATUS_V(result);
+ push_utf8_fstring(state->response.data.auth.nt_status_string, nt_errstr(result));
+ push_utf8_fstring(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 authentication for user [%s]\\[%s] returned %s (PAM: %d)\n",
+ domain,
+ 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)
{
- char *oldpass, *newpass;
- fstring domain, user;
- uchar nt_oldhash[16];
- uchar lm_oldhash[16];
+ 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));
- DEBUG(3, ("[%5d]: pam chauthtok %s\n", state->pid,
- state->request.data.chauthtok.user));
+ /* Setup crap */
- /* Setup crap */
+ if (state == NULL)
+ return WINBINDD_ERROR;
- if (state == NULL) return WINBINDD_ERROR;
+ if (!parse_domain_user(state->request.data.chauthtok.user, domain,
+ user)) {
+ result = NT_STATUS_INVALID_PARAMETER;
+ goto done;
+ }
- parse_domain_user(state->request.data.chauthtok.user, domain, user);
+ /* Change password */
- oldpass = state->request.data.chauthtok.oldpass;
- newpass = state->request.data.chauthtok.newpass;
+ oldpass = state->request.data.chauthtok.oldpass;
+ newpass = state->request.data.chauthtok.newpass;
- nt_lm_owf_gen(oldpass, nt_oldhash, lm_oldhash);
+ /* Get sam handle */
- /* Change password */
+ 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 0
+ 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;
+ }
- /* XXX */
+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);
- if (!msrpc_sam_ntchange_pwd(server_state.controller, domain, user,
- lm_oldhash, nt_oldhash, newpass)) {
- DEBUG(0, ("password change failed for user %s/%s\n", domain, user));
- return WINBINDD_ERROR;
- }
-#endif
-
- return WINBINDD_OK;
+ DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2,
+ ("Password change for user [%s]\\[%s] returned %s (PAM: %d)\n",
+ domain,
+ user,
+ state->response.data.auth.nt_status_string,
+ state->response.data.auth.pam_error));
+
+ return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
}
git.samba.org / samba.git / blobdiff