#include "includes.h"
#include "auth/auth.h"
+#include "auth/auth_sam.h"
+#include "auth/credentials/credentials.h"
+#include "auth/credentials/credentials_krb5.h"
#include "libcli/security/security.h"
#include "libcli/auth/libcli_auth.h"
#include "dsdb/samdb/samdb.h"
#include "auth/session_proto.h"
+#include "system/kerberos.h"
+#include <gssapi/gssapi.h>
_PUBLIC_ struct auth_session_info *anonymous_session(TALLOC_CTX *mem_ctx,
struct loadparm_context *lp_ctx)
}
_PUBLIC_ NTSTATUS auth_generate_session_info(TALLOC_CTX *mem_ctx,
- struct auth_context *auth_context, /* Optional if the domain SID is in the NT AUTHORITY domain */
- struct auth_serversupplied_info *server_info,
+ 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_user_info_dc *user_info_dc,
uint32_t session_info_flags,
struct auth_session_info **_session_info)
{
struct auth_session_info *session_info;
NTSTATUS nt_status;
- 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;
+ unsigned int i, num_sids = 0;
const char *filter;
- struct dom_sid **groupSIDs = NULL;
- const struct dom_sid *dom_sid, *anonymous_sid, *system_sid;
+ struct dom_sid *sids = NULL;
+ const struct dom_sid *anonymous_sid, *system_sid;
TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
NT_STATUS_HAVE_NO_MEMORY(tmp_ctx);
- /* For now, we don't have trusted domains, so we do a very
- * simple check to see that the user's SID is in *this*
- * domain, and then trust the user account control. When we
- * get trusted domains, we should check it's a trusted domain
- * in this forest. This elaborate check is to try and avoid a
- * nasty security bug if we forget about this later... */
-
- session_info = talloc(tmp_ctx, struct auth_session_info);
+ session_info = talloc_zero(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);
+ session_info->info = talloc_reference(session_info, user_info_dc->info);
+
+ session_info->torture = talloc_zero(session_info, struct auth_user_info_torture);
+ NT_STATUS_HAVE_NO_MEMORY_AND_FREE(session_info->torture, tmp_ctx);
+ session_info->torture->num_dc_sids = user_info_dc->num_sids;
+ session_info->torture->dc_sids = talloc_reference(session_info, user_info_dc->sids);
+ NT_STATUS_HAVE_NO_MEMORY_AND_FREE(session_info->torture->dc_sids, tmp_ctx);
/* unless set otherwise, the session key is the user session
* key from the auth subsystem */
- session_info->session_key = server_info->user_session_key;
+ session_info->session_key = data_blob_talloc(session_info, user_info_dc->user_session_key.data, user_info_dc->user_session_key.length);
+ if (!session_info->session_key.data && session_info->session_key.length) {
+ NT_STATUS_HAVE_NO_MEMORY_AND_FREE(session_info->session_key.data, tmp_ctx);
+ }
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)) {
+ sids = talloc_array(tmp_ctx, struct dom_sid, user_info_dc->num_sids);
+ NT_STATUS_HAVE_NO_MEMORY_AND_FREE(sids, tmp_ctx);
+ if (!sids) {
+ talloc_free(tmp_ctx);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ num_sids = user_info_dc->num_sids;
+
+ for (i=0; i < user_info_dc->num_sids; i++) {
+ sids[i] = user_info_dc->sids[i];
+ }
+
+ if (user_info_dc->num_sids > PRIMARY_USER_SID_INDEX && dom_sid_equal(anonymous_sid, &user_info_dc->sids[PRIMARY_USER_SID_INDEX])) {
/* Don't expand nested groups of system, anonymous etc*/
- } else if (dom_sid_equal(system_sid, server_info->account_sid)) {
+ } else if (user_info_dc->num_sids > PRIMARY_USER_SID_INDEX && dom_sid_equal(system_sid, &user_info_dc->sids[PRIMARY_USER_SID_INDEX])) {
/* Don't expand nested groups of system, anonymous etc*/
- } else if (auth_context) {
- 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];
- }
-
+ } else if (sam_ctx) {
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(auth_context->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(auth_context->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;
+ for (i = 0; i < user_info_dc->num_sids; i++) {
+ char *sid_string;
+ const char *sid_dn;
+ DATA_BLOB sid_blob;
- group_string = dom_sid_string(tmp_ctx,
- server_info->domain_groups[i]);
- NT_STATUS_HAVE_NO_MEMORY_AND_FREE(group_string, server_info);
+ sid_string = dom_sid_string(tmp_ctx,
+ &user_info_dc->sids[i]);
+ NT_STATUS_HAVE_NO_MEMORY_AND_FREE(sid_string, user_info_dc);
- 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);
+ sid_dn = talloc_asprintf(tmp_ctx, "<SID=%s>", sid_string);
+ talloc_free(sid_string);
+ NT_STATUS_HAVE_NO_MEMORY_AND_FREE(sid_dn, user_info_dc);
+ sid_blob = data_blob_string_const(sid_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(auth_context->sam_ctx, &group_blob, true, filter,
- tmp_ctx, &groupSIDs, &num_groupSIDs);
+ * builtin groups
+ *
+ * We already have the SID in the token, so set
+ * 'only childs' flag to true */
+ nt_status = dsdb_expand_nested_groups(sam_ctx, &sid_blob, true, filter,
+ tmp_ctx, &sids, &num_sids);
if (!NT_STATUS_IS_OK(nt_status)) {
talloc_free(tmp_ctx);
return nt_status;
}
nt_status = security_token_create(session_info,
- auth_context ? auth_context->event_ctx : NULL,
- auth_context ? auth_context->lp_ctx : NULL,
- server_info->account_sid,
- server_info->primary_group_sid,
- num_groupSIDs,
- groupSIDs,
+ lp_ctx,
+ num_sids,
+ sids,
session_info_flags,
&session_info->security_token);
NT_STATUS_NOT_OK_RETURN_AND_FREE(nt_status, tmp_ctx);
return NT_STATUS_OK;
}
+/* Fill out the auth_session_info with a cli_credentials based on the
+ * auth_session_info we were forwarded over named pipe forwarding.
+ *
+ * NOTE: The stucture members of session_info_transport are stolen
+ * with talloc_move() into auth_session_info for long term use
+ */
+struct auth_session_info *auth_session_info_from_transport(TALLOC_CTX *mem_ctx,
+ struct auth_session_info_transport *session_info_transport,
+ struct loadparm_context *lp_ctx,
+ const char **reason)
+{
+ struct auth_session_info *session_info;
+ session_info = talloc_steal(mem_ctx, session_info_transport->session_info);
+
+ if (session_info_transport->exported_gssapi_credentials.length) {
+ struct cli_credentials *creds;
+ OM_uint32 minor_status;
+ gss_buffer_desc cred_token;
+ gss_cred_id_t cred_handle;
+ const char *error_string;
+ int ret;
+
+ DEBUG(10, ("Delegated credentials supplied by client\n"));
+
+ cred_token.value = session_info_transport->exported_gssapi_credentials.data;
+ cred_token.length = session_info_transport->exported_gssapi_credentials.length;
+
+ ret = gss_import_cred(&minor_status,
+ &cred_token,
+ &cred_handle);
+ if (ret != GSS_S_COMPLETE) {
+ *reason = "Internal error in gss_import_cred()";
+ return NULL;
+ }
+
+ creds = cli_credentials_init(session_info);
+ if (!creds) {
+ *reason = "Out of memory in cli_credentials_init()";
+ return NULL;
+ }
+ session_info->credentials = creds;
+
+ cli_credentials_set_conf(creds, lp_ctx);
+ /* Just so we don't segfault trying to get at a username */
+ cli_credentials_set_anonymous(creds);
+
+ ret = cli_credentials_set_client_gss_creds(creds,
+ lp_ctx,
+ cred_handle,
+ CRED_SPECIFIED,
+ &error_string);
+ if (ret) {
+ *reason = talloc_asprintf(mem_ctx,
+ "Failed to set pipe forwarded"
+ "creds: %s\n", error_string);
+ return NULL;
+ }
+
+ /* This credential handle isn't useful for password
+ * authentication, so ensure nobody tries to do that */
+ cli_credentials_set_kerberos_state(creds,
+ CRED_MUST_USE_KERBEROS);
+
+ }
+
+ return session_info;
+}
+
+
+/* Create a auth_session_info_transport from an auth_session_info.
+ *
+ * NOTE: Members of the auth_session_info_transport structure are
+ * talloc_referenced() into this structure, and should not be changed.
+ */
+NTSTATUS auth_session_info_transport_from_session(TALLOC_CTX *mem_ctx,
+ struct auth_session_info *session_info,
+ struct tevent_context *event_ctx,
+ struct loadparm_context *lp_ctx,
+ struct auth_session_info_transport **transport_out)
+{
+
+ struct auth_session_info_transport *session_info_transport
+ = talloc_zero(mem_ctx, struct auth_session_info_transport);
+ if (!session_info_transport) {
+ return NT_STATUS_NO_MEMORY;
+ };
+ session_info_transport->session_info = talloc_reference(session_info_transport, session_info);
+ if (!session_info_transport->session_info) {
+ return NT_STATUS_NO_MEMORY;
+ };
+
+ if (session_info->credentials) {
+ struct gssapi_creds_container *gcc;
+ OM_uint32 gret;
+ OM_uint32 minor_status;
+ gss_buffer_desc cred_token;
+ const char *error_string;
+ int ret;
+
+ ret = cli_credentials_get_client_gss_creds(session_info->credentials,
+ event_ctx,
+ lp_ctx,
+ &gcc, &error_string);
+ if (ret != 0) {
+ *transport_out = session_info_transport;
+ return NT_STATUS_OK;
+ }
+
+ gret = gss_export_cred(&minor_status,
+ gcc->creds,
+ &cred_token);
+ if (gret != GSS_S_COMPLETE) {
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ if (cred_token.length) {
+ session_info_transport->exported_gssapi_credentials
+ = data_blob_talloc(session_info_transport,
+ cred_token.value,
+ cred_token.length);
+ gss_release_buffer(&minor_status, &cred_token);
+ NT_STATUS_HAVE_NO_MEMORY(session_info_transport->exported_gssapi_credentials.data);
+ }
+ }
+ *transport_out = session_info_transport;
+ return NT_STATUS_OK;
+}
+
+
+/* Produce a session_info for an arbitary DN or principal in the local
+ * DB, assuming the local DB holds all the groups
+ *
+ * Supply either a principal or a DN
+ */
+NTSTATUS authsam_get_session_info_principal(TALLOC_CTX *mem_ctx,
+ struct loadparm_context *lp_ctx,
+ struct ldb_context *sam_ctx,
+ const char *principal,
+ struct ldb_dn *user_dn,
+ uint32_t session_info_flags,
+ struct auth_session_info **session_info)
+{
+ NTSTATUS nt_status;
+ struct auth_user_info_dc *user_info_dc;
+ TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
+ if (!tmp_ctx) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ nt_status = authsam_get_user_info_dc_principal(tmp_ctx, lp_ctx, sam_ctx,
+ principal, user_dn,
+ &user_info_dc);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ talloc_free(tmp_ctx);
+ return nt_status;
+ }
+
+ nt_status = auth_generate_session_info(tmp_ctx, lp_ctx, sam_ctx,
+ user_info_dc, session_info_flags,
+ session_info);
+
+ if (NT_STATUS_IS_OK(nt_status)) {
+ talloc_steal(mem_ctx, *session_info);
+ }
+ talloc_free(tmp_ctx);
+ return nt_status;
+}
+
/**
* prints a struct auth_session_info security token to debug output.
*/
return;
}
- security_token_debug(dbg_lev, session_info->security_token);
+ security_token_debug(0, dbg_lev, session_info->security_token);
}
git.samba.org / sfrench / samba-autobuild / .git / blobdiff