Unix SMB/CIFS implementation.
Password and authentication handling
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
+#include "smbd/globals.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_AUTH
static_decl_auth;
-static struct auth_init_function_entry *backends = NULL;
+static struct auth_init_function_entry *auth_backends = NULL;
static struct auth_init_function_entry *auth_find_backend_entry(const char *name);
NTSTATUS smb_register_auth(int version, const char *name, auth_init_function init)
{
- struct auth_init_function_entry *entry = backends;
+ struct auth_init_function_entry *entry = auth_backends;
if (version != AUTH_INTERFACE_VERSION) {
DEBUG(0,("Can't register auth_method!\n"
DEBUG(0,("There already is an auth method registered with the name %s!\n", name));
return NT_STATUS_OBJECT_NAME_COLLISION;
}
-
+
entry = SMB_XMALLOC_P(struct auth_init_function_entry);
entry->name = smb_xstrdup(name);
entry->init = init;
- DLIST_ADD(backends, entry);
+ DLIST_ADD(auth_backends, entry);
DEBUG(5,("Successfully added auth method '%s'\n", name));
return NT_STATUS_OK;
}
static struct auth_init_function_entry *auth_find_backend_entry(const char *name)
{
- struct auth_init_function_entry *entry = backends;
+ struct auth_init_function_entry *entry = auth_backends;
while(entry) {
if (strcmp(entry->name, name)==0) return entry;
entry = entry->next;
}
-
+
return NULL;
}
Returns a const char of length 8 bytes.
****************************************************************************/
-static const uint8 *get_ntlm_challenge(struct auth_context *auth_context)
+static NTSTATUS get_ntlm_challenge(struct auth_context *auth_context,
+ uint8_t chal[8])
{
DATA_BLOB challenge = data_blob_null;
const char *challenge_set_by = NULL;
auth_methods *auth_method;
- TALLOC_CTX *mem_ctx;
if (auth_context->challenge.length) {
DEBUG(5, ("get_ntlm_challenge (auth subsystem): returning previous challenge by module %s (normal)\n",
auth_context->challenge_set_by));
- return auth_context->challenge.data;
+ memcpy(chal, auth_context->challenge.data, 8);
+ return NT_STATUS_OK;
}
auth_context->challenge_may_be_modified = False;
continue;
}
- mem_ctx = talloc_init("auth_get_challenge for module %s", auth_method->name);
- if (!mem_ctx) {
- smb_panic("talloc_init() failed!");
- }
-
- challenge = auth_method->get_chal(auth_context, &auth_method->private_data, mem_ctx);
+ challenge = auth_method->get_chal(auth_context, &auth_method->private_data,
+ auth_context);
if (!challenge.length) {
DEBUG(3, ("auth_get_challenge: getting challenge from authentication method %s FAILED.\n",
auth_method->name));
} else {
- DEBUG(5, ("auth_get_challenge: sucessfully got challenge from module %s\n", auth_method->name));
+ DEBUG(5, ("auth_get_challenge: successfully got challenge from module %s\n", auth_method->name));
auth_context->challenge = challenge;
challenge_set_by = auth_method->name;
auth_context->challenge_set_method = auth_method;
}
- talloc_destroy(mem_ctx);
}
-
+
if (!challenge_set_by) {
- uchar chal[8];
-
- generate_random_buffer(chal, sizeof(chal));
- auth_context->challenge = data_blob_talloc(auth_context->mem_ctx,
- chal, sizeof(chal));
-
+ uchar tmp[8];
+
+ generate_random_buffer(tmp, sizeof(tmp));
+ auth_context->challenge = data_blob_talloc(auth_context,
+ tmp, sizeof(tmp));
+
challenge_set_by = "random";
auth_context->challenge_may_be_modified = True;
}
-
+
DEBUG(5, ("auth_context challenge created by %s\n", challenge_set_by));
DEBUG(5, ("challenge is: \n"));
dump_data(5, auth_context->challenge.data, auth_context->challenge.length);
-
+
SMB_ASSERT(auth_context->challenge.length == 8);
auth_context->challenge_set_by=challenge_set_by;
- return auth_context->challenge.data;
+ memcpy(chal, auth_context->challenge.data, 8);
+ return NT_STATUS_OK;
}
return NT_STATUS_LOGON_FAILURE;
DEBUG(3, ("check_ntlm_password: Checking password for unmapped user [%s]\\[%s]@[%s] with the new password interface\n",
- user_info->client_domain, user_info->smb_name, user_info->wksta_name));
+ user_info->client.domain_name, user_info->client.account_name, user_info->workstation_name));
DEBUG(3, ("check_ntlm_password: mapped user is: [%s]\\[%s]@[%s]\n",
- user_info->domain, user_info->internal_username, user_info->wksta_name));
+ user_info->mapped.domain_name, user_info->mapped.account_name, user_info->workstation_name));
if (auth_context->challenge.length != 8) {
DEBUG(0, ("check_ntlm_password: Invalid challenge stored for this auth context - cannot continue\n"));
#ifdef DEBUG_PASSWORD
DEBUG(100, ("user_info has passwords of length %d and %d\n",
- (int)user_info->lm_resp.length, (int)user_info->nt_resp.length));
+ (int)user_info->password.response.lanman.length, (int)user_info->password.response.nt.length));
DEBUG(100, ("lm:\n"));
- dump_data(100, user_info->lm_resp.data, user_info->lm_resp.length);
+ dump_data(100, user_info->password.response.lanman.data, user_info->password.response.lanman.length);
DEBUG(100, ("nt:\n"));
- dump_data(100, user_info->nt_resp.data, user_info->nt_resp.length);
+ dump_data(100, user_info->password.response.nt.data, user_info->password.response.nt.length);
#endif
/* This needs to be sorted: If it doesn't match, what should we do? */
- if (!check_domain_match(user_info->smb_name, user_info->domain))
+ if (!check_domain_match(user_info->client.account_name, user_info->mapped.domain_name))
return NT_STATUS_LOGON_FAILURE;
for (auth_method = auth_context->auth_method_list;auth_method; auth_method = auth_method->next) {
NTSTATUS result;
-
- mem_ctx = talloc_init("%s authentication for user %s\\%s", auth_method->name,
- user_info->domain, user_info->smb_name);
+
+ mem_ctx = talloc_init("%s authentication for user %s\\%s", auth_method->name,
+ user_info->mapped.domain_name, user_info->client.account_name);
result = auth_method->auth(auth_context, auth_method->private_data, mem_ctx, user_info, server_info);
if (NT_STATUS_IS_OK(nt_status)) {
DEBUG(3, ("check_ntlm_password: %s authentication for user [%s] succeeded\n",
- auth_method->name, user_info->smb_name));
+ auth_method->name, user_info->client.account_name));
} else {
DEBUG(5, ("check_ntlm_password: %s authentication for user [%s] FAILED with error %s\n",
- auth_method->name, user_info->smb_name, nt_errstr(nt_status)));
+ auth_method->name, user_info->client.account_name, nt_errstr(nt_status)));
}
talloc_destroy(mem_ctx);
}
/* successful authentication */
-
+
if (NT_STATUS_IS_OK(nt_status)) {
unix_username = (*server_info)->unix_name;
if (!(*server_info)->guest) {
/* We might not be root if we are an RPC call */
become_root();
- nt_status = smb_pam_accountcheck(unix_username);
+ nt_status = smb_pam_accountcheck(
+ unix_username,
+ smbd_server_conn->client_id.name);
unbecome_root();
-
+
if (NT_STATUS_IS_OK(nt_status)) {
DEBUG(5, ("check_ntlm_password: PAM Account for user [%s] succeeded\n",
unix_username));
unix_username, nt_errstr(nt_status)));
}
}
-
+
if (NT_STATUS_IS_OK(nt_status)) {
DEBUG((*server_info)->guest ? 5 : 2,
- ("check_ntlm_password: %sauthentication for user [%s] -> [%s] -> [%s] succeeded\n",
- (*server_info)->guest ? "guest " : "",
- user_info->smb_name,
- user_info->internal_username,
+ ("check_ntlm_password: %sauthentication for user [%s] -> [%s] -> [%s] succeeded\n",
+ (*server_info)->guest ? "guest " : "",
+ user_info->client.account_name,
+ user_info->mapped.account_name,
unix_username));
}
-
+
return nt_status;
}
-
+
/* failed authentication; check for guest lapping */
-
- DEBUG(2, ("check_ntlm_password: Authentication for user [%s] -> [%s] FAILED with error %s\n",
- user_info->smb_name, user_info->internal_username,
+
+ DEBUG(2, ("check_ntlm_password: Authentication for user [%s] -> [%s] FAILED with error %s\n",
+ user_info->client.account_name, user_info->mapped.account_name,
nt_errstr(nt_status)));
- ZERO_STRUCTP(server_info);
-
+ ZERO_STRUCTP(server_info);
+
return nt_status;
}
Clear out a auth_context, and destroy the attached TALLOC_CTX
***************************************************************************/
-static void free_auth_context(struct auth_context **auth_context)
+static int auth_context_destructor(void *ptr)
{
- auth_methods *auth_method;
+ struct auth_context *ctx = talloc_get_type(ptr, struct auth_context);
+ struct auth_methods *am;
- if (*auth_context) {
- /* Free private data of context's authentication methods */
- for (auth_method = (*auth_context)->auth_method_list; auth_method; auth_method = auth_method->next) {
- TALLOC_FREE(auth_method->private_data);
- }
- talloc_destroy((*auth_context)->mem_ctx);
- *auth_context = NULL;
+ /* Free private data of context's authentication methods */
+ for (am = ctx->auth_method_list; am; am = am->next) {
+ TALLOC_FREE(am->private_data);
}
+
+ return 0;
}
/***************************************************************************
Make a auth_info struct
***************************************************************************/
-static NTSTATUS make_auth_context(struct auth_context **auth_context)
+static NTSTATUS make_auth_context(TALLOC_CTX *mem_ctx,
+ struct auth_context **auth_context)
{
- TALLOC_CTX *mem_ctx;
+ struct auth_context *ctx;
- mem_ctx = talloc_init("authentication context");
-
- *auth_context = TALLOC_P(mem_ctx, struct auth_context);
- if (!*auth_context) {
+ ctx = talloc_zero(mem_ctx, struct auth_context);
+ if (!ctx) {
DEBUG(0,("make_auth_context: talloc failed!\n"));
- talloc_destroy(mem_ctx);
return NT_STATUS_NO_MEMORY;
}
- ZERO_STRUCTP(*auth_context);
- (*auth_context)->mem_ctx = mem_ctx;
- (*auth_context)->check_ntlm_password = check_ntlm_password;
- (*auth_context)->get_ntlm_challenge = get_ntlm_challenge;
- (*auth_context)->free = free_auth_context;
-
+ ctx->check_ntlm_password = check_ntlm_password;
+ ctx->get_ntlm_challenge = get_ntlm_challenge;
+
+ talloc_set_destructor((TALLOC_CTX *)ctx, auth_context_destructor);
+
+ *auth_context = ctx;
return NT_STATUS_OK;
}
static_init_auth;
initialised_static_modules = True;
}
-
+
DEBUG(5,("load_auth_module: Attempting to find an auth method to match %s\n",
module));
-
+
p = strchr(module_name, ':');
if (p) {
*p = 0;
module_params = p+1;
trim_char(module_params, ' ', ' ');
}
-
+
trim_char(module_name, ' ', ' ');
-
+
entry = auth_find_backend_entry(module_name);
-
+
if (entry == NULL) {
if (NT_STATUS_IS_OK(smb_probe_module("auth", module_name))) {
entry = auth_find_backend_entry(module_name);
Make a auth_info struct for the auth subsystem
***************************************************************************/
-static NTSTATUS make_auth_context_text_list(struct auth_context **auth_context, char **text_list)
+static NTSTATUS make_auth_context_text_list(TALLOC_CTX *mem_ctx,
+ struct auth_context **auth_context,
+ char **text_list)
{
auth_methods *list = NULL;
auth_methods *t = NULL;
DEBUG(2,("make_auth_context_text_list: No auth method list!?\n"));
return NT_STATUS_UNSUCCESSFUL;
}
-
- if (!NT_STATUS_IS_OK(nt_status = make_auth_context(auth_context)))
+
+ nt_status = make_auth_context(mem_ctx, auth_context);
+
+ if (!NT_STATUS_IS_OK(nt_status)) {
return nt_status;
+ }
for (;*text_list; text_list++) {
if (load_auth_module(*auth_context, *text_list, &t)) {
DLIST_ADD_END(list, t, auth_methods *);
}
}
-
+
(*auth_context)->auth_method_list = list;
-
+
return nt_status;
}
Make a auth_context struct for the auth subsystem
***************************************************************************/
-NTSTATUS make_auth_context_subsystem(struct auth_context **auth_context)
+NTSTATUS make_auth_context_subsystem(TALLOC_CTX *mem_ctx,
+ struct auth_context **auth_context)
{
char **auth_method_list = NULL;
NTSTATUS nt_status;
if (lp_auth_methods()
- && !str_list_copy(talloc_tos(), &auth_method_list,
- lp_auth_methods())) {
+ && !(auth_method_list = str_list_copy(talloc_tos(),
+ lp_auth_methods()))) {
return NT_STATUS_NO_MEMORY;
}
{
case SEC_DOMAIN:
DEBUG(5,("Making default auth method list for security=domain\n"));
- auth_method_list = str_list_make(
+ auth_method_list = str_list_make_v3(
talloc_tos(), "guest sam winbind:ntdomain",
NULL);
break;
case SEC_SERVER:
DEBUG(5,("Making default auth method list for security=server\n"));
- auth_method_list = str_list_make(
+ auth_method_list = str_list_make_v3(
talloc_tos(), "guest sam smbserver",
NULL);
break;
if (lp_encrypted_passwords()) {
if ((lp_server_role() == ROLE_DOMAIN_PDC) || (lp_server_role() == ROLE_DOMAIN_BDC)) {
DEBUG(5,("Making default auth method list for DC, security=user, encrypt passwords = yes\n"));
- auth_method_list = str_list_make(
+ auth_method_list = str_list_make_v3(
talloc_tos(),
"guest sam winbind:trustdomain",
NULL);
} else {
DEBUG(5,("Making default auth method list for standalone security=user, encrypt passwords = yes\n"));
- auth_method_list = str_list_make(
+ auth_method_list = str_list_make_v3(
talloc_tos(), "guest sam",
NULL);
}
} else {
DEBUG(5,("Making default auth method list for security=user, encrypt passwords = no\n"));
- auth_method_list = str_list_make(
+ auth_method_list = str_list_make_v3(
talloc_tos(), "guest unix", NULL);
}
break;
case SEC_SHARE:
if (lp_encrypted_passwords()) {
DEBUG(5,("Making default auth method list for security=share, encrypt passwords = yes\n"));
- auth_method_list = str_list_make(
+ auth_method_list = str_list_make_v3(
talloc_tos(), "guest sam", NULL);
} else {
DEBUG(5,("Making default auth method list for security=share, encrypt passwords = no\n"));
- auth_method_list = str_list_make(
+ auth_method_list = str_list_make_v3(
talloc_tos(), "guest unix", NULL);
}
break;
case SEC_ADS:
DEBUG(5,("Making default auth method list for security=ADS\n"));
- auth_method_list = str_list_make(
+ auth_method_list = str_list_make_v3(
talloc_tos(), "guest sam winbind:ntdomain",
NULL);
break;
} else {
DEBUG(5,("Using specified auth order\n"));
}
-
- nt_status = make_auth_context_text_list(auth_context,
+
+ nt_status = make_auth_context_text_list(mem_ctx, auth_context,
auth_method_list);
TALLOC_FREE(auth_method_list);
NTSTATUS make_auth_context_fixed(struct auth_context **auth_context, uchar chal[8])
{
NTSTATUS nt_status;
- if (!NT_STATUS_IS_OK(nt_status = make_auth_context_subsystem(auth_context))) {
+ nt_status = make_auth_context_subsystem(talloc_autofree_context(),
+ auth_context);
+ if (!NT_STATUS_IS_OK(nt_status)) {
return nt_status;
}
-
- (*auth_context)->challenge = data_blob_talloc((*auth_context)->mem_ctx, chal, 8);
+
+ (*auth_context)->challenge = data_blob_talloc(*auth_context, chal, 8);
(*auth_context)->challenge_set_by = "fixed";
return nt_status;
}