Unix SMB/CIFS implementation.
Authentication utility functions
Copyright (C) Andrew Tridgell 1992-1998
- Copyright (C) Andrew Bartlett 2001
+ Copyright (C) Andrew Bartlett 2001-2010
Copyright (C) Jeremy Allison 2000-2001
Copyright (C) Rafal Szczesniak 2002
Copyright (C) Stefan Metzmacher 2005
#include "libcli/security/security.h"
#include "libcli/auth/libcli_auth.h"
#include "dsdb/samdb/samdb.h"
-#include "auth/credentials/credentials.h"
-#include "param/param.h"
+#include "auth/session_proto.h"
-struct auth_session_info *anonymous_session(TALLOC_CTX *mem_ctx)
+_PUBLIC_ struct auth_session_info *anonymous_session(TALLOC_CTX *mem_ctx,
+ struct loadparm_context *lp_ctx)
{
NTSTATUS nt_status;
struct auth_session_info *session_info = NULL;
- nt_status = auth_anonymous_session_info(mem_ctx, global_loadparm, &session_info);
+ nt_status = auth_anonymous_session_info(mem_ctx, lp_ctx, &session_info);
if (!NT_STATUS_IS_OK(nt_status)) {
return NULL;
}
return session_info;
}
-NTSTATUS auth_anonymous_session_info(TALLOC_CTX *parent_ctx,
- struct loadparm_context *lp_ctx,
- struct auth_session_info **_session_info)
+_PUBLIC_ NTSTATUS auth_generate_session_info(TALLOC_CTX *mem_ctx,
+ struct loadparm_context *lp_ctx, /* Optional, if you don't want privilages */
+ struct ldb_context *sam_ctx, /* Optional, if you don't want local groups */
+ struct auth_serversupplied_info *server_info,
+ uint32_t session_info_flags,
+ struct auth_session_info **_session_info)
{
+ struct auth_session_info *session_info;
NTSTATUS nt_status;
- struct auth_serversupplied_info *server_info = NULL;
- struct auth_session_info *session_info = NULL;
- TALLOC_CTX *mem_ctx = talloc_new(parent_ctx);
-
- nt_status = auth_anonymous_server_info(mem_ctx,
- lp_netbios_name(lp_ctx),
- &server_info);
- if (!NT_STATUS_IS_OK(nt_status)) {
- talloc_free(mem_ctx);
- return nt_status;
- }
-
- /* references the server_info into the session_info */
- nt_status = auth_generate_session_info(parent_ctx, server_info, &session_info);
- talloc_free(mem_ctx);
-
- NT_STATUS_NOT_OK_RETURN(nt_status);
-
- session_info->credentials = cli_credentials_init(session_info);
- if (!session_info->credentials) {
- return NT_STATUS_NO_MEMORY;
- }
-
- cli_credentials_set_conf(session_info->credentials, lp_ctx);
- cli_credentials_set_anonymous(session_info->credentials);
-
- *_session_info = session_info;
-
- return NT_STATUS_OK;
-}
-
-NTSTATUS auth_anonymous_server_info(TALLOC_CTX *mem_ctx,
- const char *netbios_name,
- struct auth_serversupplied_info **_server_info)
-{
- struct auth_serversupplied_info *server_info;
- server_info = talloc(mem_ctx, struct auth_serversupplied_info);
- NT_STATUS_HAVE_NO_MEMORY(server_info);
-
- server_info->account_sid = dom_sid_parse_talloc(server_info, SID_NT_ANONYMOUS);
- NT_STATUS_HAVE_NO_MEMORY(server_info->account_sid);
-
- /* is this correct? */
- server_info->primary_group_sid = dom_sid_parse_talloc(server_info, SID_BUILTIN_GUESTS);
- NT_STATUS_HAVE_NO_MEMORY(server_info->primary_group_sid);
-
- server_info->n_domain_groups = 0;
- server_info->domain_groups = NULL;
-
- /* annoying, but the Anonymous really does have a session key,
- and it is all zeros! */
- server_info->user_session_key = data_blob_talloc(server_info, NULL, 16);
- NT_STATUS_HAVE_NO_MEMORY(server_info->user_session_key.data);
-
- server_info->lm_session_key = data_blob_talloc(server_info, NULL, 16);
- NT_STATUS_HAVE_NO_MEMORY(server_info->lm_session_key.data);
-
- data_blob_clear(&server_info->user_session_key);
- data_blob_clear(&server_info->lm_session_key);
-
- server_info->account_name = talloc_strdup(server_info, "ANONYMOUS LOGON");
- NT_STATUS_HAVE_NO_MEMORY(server_info->account_name);
+ unsigned int i, num_groupSIDs = 0;
+ const char *account_sid_string;
+ const char *account_sid_dn;
+ DATA_BLOB account_sid_blob;
+ const char *primary_group_string;
+ const char *primary_group_dn;
+ DATA_BLOB primary_group_blob;
- server_info->domain_name = talloc_strdup(server_info, "NT AUTHORITY");
- NT_STATUS_HAVE_NO_MEMORY(server_info->domain_name);
+ const char *filter;
- server_info->full_name = talloc_strdup(server_info, "Anonymous Logon");
- NT_STATUS_HAVE_NO_MEMORY(server_info->full_name);
+ struct dom_sid **groupSIDs = NULL;
+ const struct dom_sid *anonymous_sid, *system_sid;
- server_info->logon_script = talloc_strdup(server_info, "");
- NT_STATUS_HAVE_NO_MEMORY(server_info->logon_script);
+ TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
+ NT_STATUS_HAVE_NO_MEMORY(tmp_ctx);
- server_info->profile_path = talloc_strdup(server_info, "");
- NT_STATUS_HAVE_NO_MEMORY(server_info->profile_path);
-
- server_info->home_directory = talloc_strdup(server_info, "");
- NT_STATUS_HAVE_NO_MEMORY(server_info->home_directory);
-
- server_info->home_drive = talloc_strdup(server_info, "");
- NT_STATUS_HAVE_NO_MEMORY(server_info->home_drive);
-
- server_info->logon_server = talloc_strdup(server_info, netbios_name);
- NT_STATUS_HAVE_NO_MEMORY(server_info->logon_server);
-
- server_info->last_logon = 0;
- server_info->last_logoff = 0;
- server_info->acct_expiry = 0;
- server_info->last_password_change = 0;
- server_info->allow_password_change = 0;
- server_info->force_password_change = 0;
-
- server_info->logon_count = 0;
- server_info->bad_password_count = 0;
-
- server_info->acct_flags = ACB_NORMAL;
-
- server_info->authenticated = false;
-
- *_server_info = server_info;
-
- return NT_STATUS_OK;
-}
-
-NTSTATUS auth_generate_session_info(TALLOC_CTX *mem_ctx,
- struct auth_serversupplied_info *server_info,
- struct auth_session_info **_session_info)
-{
- struct auth_session_info *session_info;
- NTSTATUS nt_status;
-
- session_info = talloc(mem_ctx, struct auth_session_info);
- NT_STATUS_HAVE_NO_MEMORY(session_info);
+ session_info = talloc(tmp_ctx, struct auth_session_info);
+ NT_STATUS_HAVE_NO_MEMORY_AND_FREE(session_info, tmp_ctx);
session_info->server_info = talloc_reference(session_info, server_info);
* key from the auth subsystem */
session_info->session_key = server_info->user_session_key;
+ anonymous_sid = dom_sid_parse_talloc(tmp_ctx, SID_NT_ANONYMOUS);
+ NT_STATUS_HAVE_NO_MEMORY_AND_FREE(anonymous_sid, tmp_ctx);
+
+ system_sid = dom_sid_parse_talloc(tmp_ctx, SID_NT_SYSTEM);
+ NT_STATUS_HAVE_NO_MEMORY_AND_FREE(system_sid, tmp_ctx);
+
+ if (dom_sid_equal(anonymous_sid, server_info->account_sid)) {
+ /* Don't expand nested groups of system, anonymous etc*/
+ } else if (dom_sid_equal(system_sid, server_info->account_sid)) {
+ /* Don't expand nested groups of system, anonymous etc*/
+ } else if (sam_ctx) {
+ groupSIDs = talloc_array(tmp_ctx, struct dom_sid *, server_info->n_domain_groups);
+ NT_STATUS_HAVE_NO_MEMORY_AND_FREE(groupSIDs, tmp_ctx);
+ if (!groupSIDs) {
+ talloc_free(tmp_ctx);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ num_groupSIDs = server_info->n_domain_groups;
+
+ for (i=0; i < server_info->n_domain_groups; i++) {
+ groupSIDs[i] = server_info->domain_groups[i];
+ }
+
+ filter = talloc_asprintf(tmp_ctx, "(&(objectClass=group)(groupType:1.2.840.113556.1.4.803:=%u))",
+ GROUP_TYPE_BUILTIN_LOCAL_GROUP);
+
+ /* Search for each group in the token */
+
+ /* Expands the account SID - this function takes in
+ * memberOf-like values, so we fake one up with the
+ * <SID=S-...> format of DN and then let it expand
+ * them, as long as they meet the filter - so only
+ * builtin groups
+ *
+ * We already have the primary group in the token, so set
+ * 'only childs' flag to true
+ */
+ account_sid_string = dom_sid_string(tmp_ctx, server_info->account_sid);
+ NT_STATUS_HAVE_NO_MEMORY_AND_FREE(account_sid_string, server_info);
+
+ account_sid_dn = talloc_asprintf(tmp_ctx, "<SID=%s>", account_sid_string);
+ NT_STATUS_HAVE_NO_MEMORY_AND_FREE(account_sid_dn, server_info);
+
+ account_sid_blob = data_blob_string_const(account_sid_dn);
+
+ nt_status = authsam_expand_nested_groups(sam_ctx, &account_sid_blob, true, filter,
+ tmp_ctx, &groupSIDs, &num_groupSIDs);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ talloc_free(tmp_ctx);
+ return nt_status;
+ }
+
+ /* Expands the primary group - this function takes in
+ * memberOf-like values, so we fake one up with the
+ * <SID=S-...> format of DN and then let it expand
+ * them, as long as they meet the filter - so only
+ * builtin groups
+ *
+ * We already have the primary group in the token, so set
+ * 'only childs' flag to true
+ */
+ primary_group_string = dom_sid_string(tmp_ctx, server_info->primary_group_sid);
+ NT_STATUS_HAVE_NO_MEMORY_AND_FREE(primary_group_string, server_info);
+
+ primary_group_dn = talloc_asprintf(tmp_ctx, "<SID=%s>", primary_group_string);
+ NT_STATUS_HAVE_NO_MEMORY_AND_FREE(primary_group_dn, server_info);
+
+ primary_group_blob = data_blob_string_const(primary_group_dn);
+
+ nt_status = authsam_expand_nested_groups(sam_ctx, &primary_group_blob, true, filter,
+ tmp_ctx, &groupSIDs, &num_groupSIDs);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ talloc_free(tmp_ctx);
+ return nt_status;
+ }
+
+ for (i = 0; i < server_info->n_domain_groups; i++) {
+ char *group_string;
+ const char *group_dn;
+ DATA_BLOB group_blob;
+
+ group_string = dom_sid_string(tmp_ctx,
+ server_info->domain_groups[i]);
+ NT_STATUS_HAVE_NO_MEMORY_AND_FREE(group_string, server_info);
+
+ group_dn = talloc_asprintf(tmp_ctx, "<SID=%s>", group_string);
+ talloc_free(group_string);
+ NT_STATUS_HAVE_NO_MEMORY_AND_FREE(group_dn, server_info);
+ group_blob = data_blob_string_const(group_dn);
+
+ /* This function takes in memberOf values and expands
+ * them, as long as they meet the filter - so only
+ * builtin groups */
+ nt_status = authsam_expand_nested_groups(sam_ctx, &group_blob, true, filter,
+ tmp_ctx, &groupSIDs, &num_groupSIDs);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ talloc_free(tmp_ctx);
+ return nt_status;
+ }
+ }
+ }
+
nt_status = security_token_create(session_info,
- global_loadparm,
+ lp_ctx,
server_info->account_sid,
server_info->primary_group_sid,
- server_info->n_domain_groups,
- server_info->domain_groups,
- server_info->authenticated,
+ num_groupSIDs,
+ groupSIDs,
+ session_info_flags,
&session_info->security_token);
- NT_STATUS_NOT_OK_RETURN(nt_status);
+ NT_STATUS_NOT_OK_RETURN_AND_FREE(nt_status, tmp_ctx);
session_info->credentials = NULL;
+ talloc_steal(mem_ctx, session_info);
*_session_info = session_info;
+ talloc_free(tmp_ctx);
return NT_STATUS_OK;
}
return;
}
- security_token_debug(dbg_lev, session_info->security_token);
+ security_token_debug(0, dbg_lev, session_info->security_token);
}
-/**
- * Make a server_info struct from the info3 returned by a domain logon
- */
-NTSTATUS make_server_info_netlogon_validation(TALLOC_CTX *mem_ctx,
- const char *account_name,
- uint16_t validation_level,
- union netr_Validation *validation,
- struct auth_serversupplied_info **_server_info)
-{
- struct auth_serversupplied_info *server_info;
- struct netr_SamBaseInfo *base = NULL;
- int i;
-
- switch (validation_level) {
- case 2:
- if (!validation || !validation->sam2) {
- return NT_STATUS_INVALID_PARAMETER;
- }
- base = &validation->sam2->base;
- break;
- case 3:
- if (!validation || !validation->sam3) {
- return NT_STATUS_INVALID_PARAMETER;
- }
- base = &validation->sam3->base;
- break;
- case 6:
- if (!validation || !validation->sam6) {
- return NT_STATUS_INVALID_PARAMETER;
- }
- base = &validation->sam6->base;
- break;
- default:
- return NT_STATUS_INVALID_LEVEL;
- }
-
- server_info = talloc(mem_ctx, struct auth_serversupplied_info);
- NT_STATUS_HAVE_NO_MEMORY(server_info);
-
- /*
- Here is where we should check the list of
- trusted domains, and verify that the SID
- matches.
- */
- server_info->account_sid = dom_sid_add_rid(server_info, base->domain_sid, base->rid);
- NT_STATUS_HAVE_NO_MEMORY(server_info->account_sid);
-
-
- server_info->primary_group_sid = dom_sid_add_rid(server_info, base->domain_sid, base->primary_gid);
- NT_STATUS_HAVE_NO_MEMORY(server_info->primary_group_sid);
-
- server_info->n_domain_groups = base->groups.count;
- if (base->groups.count) {
- server_info->domain_groups = talloc_array(server_info, struct dom_sid*, base->groups.count);
- NT_STATUS_HAVE_NO_MEMORY(server_info->domain_groups);
- } else {
- server_info->domain_groups = NULL;
- }
-
- for (i = 0; i < base->groups.count; i++) {
- server_info->domain_groups[i] = dom_sid_add_rid(server_info, base->domain_sid, base->groups.rids[i].rid);
- NT_STATUS_HAVE_NO_MEMORY(server_info->domain_groups[i]);
- }
-
- /* Copy 'other' sids. We need to do sid filtering here to
- prevent possible elevation of privileges. See:
-
- http://www.microsoft.com/windows2000/techinfo/administration/security/sidfilter.asp
- */
-
- if (validation_level == 3) {
- struct dom_sid **dgrps = server_info->domain_groups;
- size_t sidcount = server_info->n_domain_groups + validation->sam3->sidcount;
- size_t n_dgrps = server_info->n_domain_groups;
-
- if (validation->sam3->sidcount > 0) {
- dgrps = talloc_realloc(server_info, dgrps, struct dom_sid*, sidcount);
- NT_STATUS_HAVE_NO_MEMORY(dgrps);
-
- for (i = 0; i < validation->sam3->sidcount; i++) {
- dgrps[n_dgrps + i] = talloc_reference(dgrps, validation->sam3->sids[i].sid);
- }
- }
-
- server_info->n_domain_groups = sidcount;
- server_info->domain_groups = dgrps;
-
- /* Where are the 'global' sids?... */
- }
-
- if (base->account_name.string) {
- server_info->account_name = talloc_reference(server_info, base->account_name.string);
- } else {
- server_info->account_name = talloc_strdup(server_info, account_name);
- NT_STATUS_HAVE_NO_MEMORY(server_info->account_name);
- }
-
- server_info->domain_name = talloc_reference(server_info, base->domain.string);
- server_info->full_name = talloc_reference(server_info, base->full_name.string);
- server_info->logon_script = talloc_reference(server_info, base->logon_script.string);
- server_info->profile_path = talloc_reference(server_info, base->profile_path.string);
- server_info->home_directory = talloc_reference(server_info, base->home_directory.string);
- server_info->home_drive = talloc_reference(server_info, base->home_drive.string);
- server_info->logon_server = talloc_reference(server_info, base->logon_server.string);
- server_info->last_logon = base->last_logon;
- server_info->last_logoff = base->last_logoff;
- server_info->acct_expiry = base->acct_expiry;
- server_info->last_password_change = base->last_password_change;
- server_info->allow_password_change = base->allow_password_change;
- server_info->force_password_change = base->force_password_change;
- server_info->logon_count = base->logon_count;
- server_info->bad_password_count = base->bad_password_count;
- server_info->acct_flags = base->acct_flags;
-
- server_info->authenticated = true;
-
- /* ensure we are never given NULL session keys */
-
- if (all_zero(base->key.key, sizeof(base->key.key))) {
- server_info->user_session_key = data_blob(NULL, 0);
- } else {
- server_info->user_session_key = data_blob_talloc(server_info, base->key.key, sizeof(base->key.key));
- NT_STATUS_HAVE_NO_MEMORY(server_info->user_session_key.data);
- }
-
- if (all_zero(base->LMSessKey.key, sizeof(base->LMSessKey.key))) {
- server_info->lm_session_key = data_blob(NULL, 0);
- } else {
- server_info->lm_session_key = data_blob_talloc(server_info, base->LMSessKey.key, sizeof(base->LMSessKey.key));
- NT_STATUS_HAVE_NO_MEMORY(server_info->lm_session_key.data);
- }
-
- *_server_info = server_info;
- return NT_STATUS_OK;
-}
-
-
git.samba.org / kai / samba.git / blobdiff