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
+ 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,
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.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
-#include "libcli/ldap/ldap.h"
+#include "libcli/ldap/libcli_ldap.h"
+#include "libcli/ldap/ldap_proto.h"
#include "libcli/ldap/ldap_client.h"
-#include "auth/auth.h"
+#include "lib/tls/tls.h"
+#include "auth/gensec/gensec.h"
+#include "auth/gensec/gensec_socket.h"
+#include "auth/credentials/credentials.h"
+#include "lib/stream/packet.h"
+#include "param/param.h"
+
+struct ldap_simple_creds {
+ const char *dn;
+ const char *pw;
+};
+
+_PUBLIC_ NTSTATUS ldap_rebind(struct ldap_connection *conn)
+{
+ NTSTATUS status;
+ struct ldap_simple_creds *creds;
+
+ switch (conn->bind.type) {
+ case LDAP_BIND_SASL:
+ status = ldap_bind_sasl(conn, (struct cli_credentials *)conn->bind.creds,
+ conn->lp_ctx);
+ break;
+
+ case LDAP_BIND_SIMPLE:
+ creds = (struct ldap_simple_creds *)conn->bind.creds;
+
+ if (creds == NULL) {
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ status = ldap_bind_simple(conn, creds->dn, creds->pw);
+ break;
+
+ default:
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ return status;
+}
+
static struct ldap_message *new_ldap_simple_bind_msg(struct ldap_connection *conn,
const char *dn, const char *pw)
res->r.BindRequest.dn = talloc_strdup(res, dn);
res->r.BindRequest.mechanism = LDAP_AUTH_MECH_SIMPLE;
res->r.BindRequest.creds.password = talloc_strdup(res, pw);
+ res->controls = NULL;
return res;
}
/*
perform a simple username/password bind
*/
-NTSTATUS ldap_bind_simple(struct ldap_connection *conn,
+_PUBLIC_ NTSTATUS ldap_bind_simple(struct ldap_connection *conn,
const char *userdn, const char *password)
{
struct ldap_request *req;
talloc_free(req);
+ if (NT_STATUS_IS_OK(status)) {
+ struct ldap_simple_creds *creds = talloc(conn, struct ldap_simple_creds);
+ if (creds == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ creds->dn = talloc_strdup(creds, dn);
+ creds->pw = talloc_strdup(creds, pw);
+ if (creds->dn == NULL || creds->pw == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ conn->bind.type = LDAP_BIND_SIMPLE;
+ conn->bind.creds = creds;
+ }
+
return status;
}
res->r.BindRequest.dn = "";
res->r.BindRequest.mechanism = LDAP_AUTH_MECH_SASL;
res->r.BindRequest.creds.SASL.mechanism = talloc_strdup(res, sasl_mechanism);
- res->r.BindRequest.creds.SASL.secblob = *secblob;
+ if (secblob) {
+ res->r.BindRequest.creds.SASL.secblob = talloc(res, DATA_BLOB);
+ if (!res->r.BindRequest.creds.SASL.secblob) {
+ talloc_free(res);
+ return NULL;
+ }
+ *res->r.BindRequest.creds.SASL.secblob = *secblob;
+ } else {
+ res->r.BindRequest.creds.SASL.secblob = NULL;
+ }
+ res->controls = NULL;
return res;
}
/*
perform a sasl bind using the given credentials
*/
-NTSTATUS ldap_bind_sasl(struct ldap_connection *conn, struct cli_credentials *creds)
+_PUBLIC_ NTSTATUS ldap_bind_sasl(struct ldap_connection *conn,
+ struct cli_credentials *creds,
+ struct loadparm_context *lp_ctx)
{
NTSTATUS status;
TALLOC_CTX *tmp_ctx = NULL;
int count, i;
const char **sasl_names;
- const struct gensec_security_ops **mechs;
-
+ uint32_t old_gensec_features;
static const char *supported_sasl_mech_attrs[] = {
"supportedSASLMechanisms",
NULL
};
+ unsigned int logon_retries = 0;
- status = gensec_client_start(conn, &conn->gensec, NULL);
+ status = ildap_search(conn, "", LDAP_SEARCH_SCOPE_BASE, "", supported_sasl_mech_attrs,
+ false, NULL, NULL, &sasl_mechs_msgs);
if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0, ("Failed to start GENSEC engine (%s)\n", nt_errstr(status)));
- goto failed;
- }
-
- gensec_want_feature(conn->gensec, 0 | GENSEC_FEATURE_SIGN | GENSEC_FEATURE_SEAL);
-
- status = gensec_set_credentials(conn->gensec, creds);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(1, ("Failed to set GENSEC creds: %s\n",
+ DEBUG(1, ("Failed to inquire of target's available sasl mechs in rootdse search: %s\n",
nt_errstr(status)));
goto failed;
}
- status = gensec_set_target_hostname(conn->gensec, conn->host);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(1, ("Failed to set GENSEC target hostname: %s\n",
- nt_errstr(status)));
- goto failed;
- }
-
- status = gensec_set_target_service(conn->gensec, "ldap");
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(1, ("Failed to set GENSEC target service: %s\n",
- nt_errstr(status)));
- goto failed;
- }
-
- status = ildap_search(conn, "", LDAP_SEARCH_SCOPE_BASE, "", supported_sasl_mech_attrs,
- False, &sasl_mechs_msgs);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(1, ("Failed to inquire of target's available sasl mechs in rootdse search: %s\n",
- nt_errstr(status)));
- goto failed;
- }
-
count = ildap_count_entries(conn, sasl_mechs_msgs);
if (count != 1) {
DEBUG(1, ("Failed to inquire of target's available sasl mechs in rootdse search: wrong number of replies: %d\n",
search = &sasl_mechs_msgs[0]->r.SearchResultEntry;
if (search->num_attributes != 1) {
- DEBUG(1, ("Failed to inquire of target's available sasl mechs in rootdse search: wrong number of attributes: %d\n",
+ DEBUG(1, ("Failed to inquire of target's available sasl mechs in rootdse search: wrong number of attributes: %d != 1\n",
search->num_attributes));
goto failed;
}
count));
goto failed;
}
-
+
for (i=0; i<search->attributes[0].num_values; i++) {
sasl_names[i] = (const char *)search->attributes[0].values[i].data;
}
sasl_names[i] = NULL;
-
- mechs = gensec_security_by_sasl(tmp_ctx, sasl_names);
- if (!mechs || !mechs[0]) {
- DEBUG(1, ("None of the %d proposed SASL mechs were acceptable\n",
- count));
+
+ gensec_init();
+
+try_logon_again:
+ /*
+ we loop back here on a logon failure, and re-create the
+ gensec session. The logon_retries counter ensures we don't
+ loop forever.
+ */
+
+ status = gensec_client_start(conn, &conn->gensec,
+ lpcfg_gensec_settings(conn, lp_ctx));
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("Failed to start GENSEC engine (%s)\n", nt_errstr(status)));
+ goto failed;
+ }
+
+ /* require Kerberos SIGN/SEAL only if we don't use SSL
+ * Windows seem not to like double encryption */
+ old_gensec_features = cli_credentials_get_gensec_features(creds);
+ if (tls_enabled(conn->sock)) {
+ cli_credentials_set_gensec_features(creds, old_gensec_features & ~(GENSEC_FEATURE_SIGN|GENSEC_FEATURE_SEAL));
+ }
+
+ /* this call also sets the gensec_want_features */
+ status = gensec_set_credentials(conn->gensec, creds);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(1, ("Failed to set GENSEC creds: %s\n",
+ nt_errstr(status)));
goto failed;
}
- status = gensec_start_mech_by_ops(conn->gensec, mechs[0]);
+ /* reset the original gensec_features (on the credentials
+ * context, so we don't tatoo it ) */
+ cli_credentials_set_gensec_features(creds, old_gensec_features);
+
+ if (conn->host) {
+ status = gensec_set_target_hostname(conn->gensec, conn->host);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(1, ("Failed to set GENSEC target hostname: %s\n",
+ nt_errstr(status)));
+ goto failed;
+ }
+ }
+
+ status = gensec_set_target_service(conn->gensec, "ldap");
if (!NT_STATUS_IS_OK(status)) {
- DEBUG(1, ("Failed to set GENSEC client mechanism: %s/%s %s\n",
- mechs[0]->name, mechs[0]->sasl_name, nt_errstr(status)));
+ DEBUG(1, ("Failed to set GENSEC target service: %s\n",
+ nt_errstr(status)));
+ goto failed;
+ }
+
+ status = gensec_start_mech_by_sasl_list(conn->gensec, sasl_names);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(1, ("None of the %d proposed SASL mechs were acceptable: %s\n",
+ count, nt_errstr(status)));
goto failed;
}
int result = LDAP_OTHER;
status = gensec_update(conn->gensec, tmp_ctx,
+ conn->event.event_ctx,
input,
&output);
/* The status value here, from GENSEC is vital to the security
!NT_STATUS_IS_OK(status)) {
break;
}
- if (output.length == 0) {
+ if (NT_STATUS_IS_OK(status) && output.length == 0) {
break;
}
- msg = new_ldap_sasl_bind_msg(tmp_ctx, "GSS-SPNEGO", &output);
+ /* Perhaps we should make gensec_start_mech_by_sasl_list() return the name we got? */
+ msg = new_ldap_sasl_bind_msg(tmp_ctx, conn->gensec->ops->sasl_name, (output.data?&output:NULL));
if (msg == NULL) {
status = NT_STATUS_NO_MEMORY;
goto failed;
status = NT_STATUS_NO_MEMORY;
goto failed;
}
- talloc_steal(tmp_ctx, req);
+ talloc_reparent(conn, tmp_ctx, req);
status = ldap_result_n(req, 0, &response);
if (!NT_STATUS_IS_OK(status)) {
result = response->r.BindResponse.response.resultcode;
+ if (result == LDAP_INVALID_CREDENTIALS) {
+ /*
+ try a second time on invalid credentials, to
+ give the user a chance to re-enter the
+ password and to handle the case where our
+ kerberos ticket is invalid as the server
+ password has changed
+ */
+ const char *principal;
+
+ principal = gensec_get_target_principal(conn->gensec);
+ if (principal == NULL) {
+ const char *hostname = gensec_get_target_hostname(conn->gensec);
+ const char *service = gensec_get_target_service(conn->gensec);
+ if (hostname != NULL && service != NULL) {
+ principal = talloc_asprintf(tmp_ctx, "%s/%s", service, hostname);
+ }
+ }
+
+ if (cli_credentials_failed_kerberos_login(creds, principal, &logon_retries) ||
+ cli_credentials_wrong_password(creds)) {
+ /*
+ destroy our gensec session and loop
+ back up to the top to retry,
+ offering the user a chance to enter
+ new credentials, or get a new ticket
+ if using kerberos
+ */
+ talloc_free(conn->gensec);
+ conn->gensec = NULL;
+ goto try_logon_again;
+ }
+ }
+
if (result != LDAP_SUCCESS && result != LDAP_SASL_BIND_IN_PROGRESS) {
status = ldap_check_response(conn,
&response->r.BindResponse.response);
if (!NT_STATUS_EQUAL(gensec_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
break;
}
- input = response->r.BindResponse.SASL.secblob;
+ if (response->r.BindResponse.SASL.secblob) {
+ input = *response->r.BindResponse.SASL.secblob;
+ } else {
+ input = data_blob(NULL, 0);
+ }
}
- if (NT_STATUS_IS_OK(status) &&
- (gensec_have_feature(conn->gensec, GENSEC_FEATURE_SEAL) ||
- gensec_have_feature(conn->gensec, GENSEC_FEATURE_SIGN))) {
- conn->enable_wrap = True;
+ talloc_free(tmp_ctx);
+
+ if (NT_STATUS_IS_OK(status)) {
+ struct socket_context *sasl_socket;
+ status = gensec_socket_init(conn->gensec,
+ conn,
+ conn->sock,
+ conn->event.event_ctx,
+ ldap_read_io_handler,
+ conn,
+ &sasl_socket);
+ if (!NT_STATUS_IS_OK(status)) goto failed;
+
+ conn->sock = sasl_socket;
+ packet_set_socket(conn->packet, conn->sock);
+
+ conn->bind.type = LDAP_BIND_SASL;
+ conn->bind.creds = creds;
}
- talloc_free(tmp_ctx);
return status;
failed:
git.samba.org / metze / samba / wip.git / blobdiff