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,
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 "system/kerberos.h"
#include "auth/kerberos/kerberos.h"
-#include "librpc/gen_ndr/krb5pac.h"
#include "auth/auth.h"
-#include "lib/ldb/include/ldb.h"
-#include "auth/auth_sam.h"
-#include "system/network.h"
#include "lib/socket/socket.h"
+#include "lib/tsocket/tsocket.h"
#include "librpc/rpc/dcerpc.h"
+#include "auth/credentials/credentials.h"
+#include "auth/credentials/credentials_krb5.h"
+#include "auth/kerberos/kerberos_credentials.h"
+#include "auth/gensec/gensec.h"
+#include "auth/gensec/gensec_proto.h"
+#include "auth/gensec/gensec_toplevel_proto.h"
+#include "param/param.h"
+#include "auth/auth_sam_reply.h"
+#include "lib/util/util_net.h"
+#include "../lib/util/asn1.h"
+#include "auth/kerberos/pac_utils.h"
+
+_PUBLIC_ NTSTATUS gensec_krb5_init(void);
enum GENSEC_KRB5_STATE {
GENSEC_KRB5_SERVER_START,
};
struct gensec_krb5_state {
- DATA_BLOB session_key;
- DATA_BLOB pac;
enum GENSEC_KRB5_STATE state_position;
struct smb_krb5_context *smb_krb5_context;
krb5_auth_context auth_context;
krb5_data enc_ticket;
krb5_keyblock *keyblock;
krb5_ticket *ticket;
- BOOL gssapi;
+ bool gssapi;
+ krb5_flags ap_req_options;
};
-static int gensec_krb5_destroy(void *ptr)
+static int gensec_krb5_destroy(struct gensec_krb5_state *gensec_krb5_state)
{
- struct gensec_krb5_state *gensec_krb5_state = ptr;
-
if (!gensec_krb5_state->smb_krb5_context) {
/* We can't clean anything else up unless we started up this far */
return 0;
return 0;
}
-static NTSTATUS gensec_krb5_start(struct gensec_security *gensec_security)
+static NTSTATUS gensec_krb5_start(struct gensec_security *gensec_security, bool gssapi)
{
krb5_error_code ret;
struct gensec_krb5_state *gensec_krb5_state;
struct cli_credentials *creds;
- const struct socket_address *my_addr, *peer_addr;
+ const struct tsocket_address *tlocal_addr, *tremote_addr;
krb5_address my_krb5_addr, peer_krb5_addr;
creds = gensec_get_credentials(gensec_security);
gensec_krb5_state->ticket = NULL;
ZERO_STRUCT(gensec_krb5_state->enc_ticket);
gensec_krb5_state->keyblock = NULL;
- gensec_krb5_state->session_key = data_blob(NULL, 0);
- gensec_krb5_state->pac = data_blob(NULL, 0);
- gensec_krb5_state->gssapi = False;
+ gensec_krb5_state->gssapi = gssapi;
talloc_set_destructor(gensec_krb5_state, gensec_krb5_destroy);
- if (cli_credentials_get_krb5_context(creds, &gensec_krb5_state->smb_krb5_context)) {
+ if (cli_credentials_get_krb5_context(creds,
+ gensec_security->settings->lp_ctx, &gensec_krb5_state->smb_krb5_context)) {
talloc_free(gensec_krb5_state);
return NT_STATUS_INTERNAL_ERROR;
}
return NT_STATUS_INTERNAL_ERROR;
}
- my_addr = gensec_get_my_addr(gensec_security);
- if (my_addr && my_addr->sockaddr) {
- ret = krb5_sockaddr2address(gensec_krb5_state->smb_krb5_context->krb5_context,
- my_addr->sockaddr, &my_krb5_addr);
+ tlocal_addr = gensec_get_local_address(gensec_security);
+ if (tlocal_addr) {
+ ssize_t socklen;
+ struct sockaddr_storage ss;
+
+ socklen = tsocket_address_bsd_sockaddr(tlocal_addr,
+ (struct sockaddr *) &ss,
+ sizeof(struct sockaddr_storage));
+ if (socklen < 0) {
+ talloc_free(gensec_krb5_state);
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+ ret = krb5_sockaddr2address(gensec_krb5_state->smb_krb5_context->krb5_context,
+ (const struct sockaddr *) &ss, &my_krb5_addr);
if (ret) {
DEBUG(1,("gensec_krb5_start: krb5_sockaddr2address (local) failed (%s)\n",
smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
}
}
- peer_addr = gensec_get_my_addr(gensec_security);
- if (peer_addr && peer_addr->sockaddr) {
- ret = krb5_sockaddr2address(gensec_krb5_state->smb_krb5_context->krb5_context,
- peer_addr->sockaddr, &peer_krb5_addr);
+ tremote_addr = gensec_get_remote_address(gensec_security);
+ if (tremote_addr) {
+ ssize_t socklen;
+ struct sockaddr_storage ss;
+
+ socklen = tsocket_address_bsd_sockaddr(tremote_addr,
+ (struct sockaddr *) &ss,
+ sizeof(struct sockaddr_storage));
+ if (socklen < 0) {
+ talloc_free(gensec_krb5_state);
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+ ret = krb5_sockaddr2address(gensec_krb5_state->smb_krb5_context->krb5_context,
+ (const struct sockaddr *) &ss, &peer_krb5_addr);
if (ret) {
DEBUG(1,("gensec_krb5_start: krb5_sockaddr2address (local) failed (%s)\n",
smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
ret = krb5_auth_con_setaddrs(gensec_krb5_state->smb_krb5_context->krb5_context,
gensec_krb5_state->auth_context,
- my_addr ? &my_krb5_addr : NULL,
- peer_addr ? &peer_krb5_addr : NULL);
+ tlocal_addr ? &my_krb5_addr : NULL,
+ tremote_addr ? &peer_krb5_addr : NULL);
if (ret) {
DEBUG(1,("gensec_krb5_start: krb5_auth_con_setaddrs failed (%s)\n",
smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
return NT_STATUS_OK;
}
-static NTSTATUS gensec_krb5_server_start(struct gensec_security *gensec_security)
+static NTSTATUS gensec_krb5_common_server_start(struct gensec_security *gensec_security, bool gssapi)
{
NTSTATUS nt_status;
struct gensec_krb5_state *gensec_krb5_state;
- nt_status = gensec_krb5_start(gensec_security);
+ nt_status = gensec_krb5_start(gensec_security, gssapi);
if (!NT_STATUS_IS_OK(nt_status)) {
return nt_status;
}
- gensec_krb5_state = gensec_security->private_data;
+ gensec_krb5_state = (struct gensec_krb5_state *)gensec_security->private_data;
gensec_krb5_state->state_position = GENSEC_KRB5_SERVER_START;
return NT_STATUS_OK;
}
-static NTSTATUS gensec_fake_gssapi_krb5_server_start(struct gensec_security *gensec_security)
+static NTSTATUS gensec_krb5_server_start(struct gensec_security *gensec_security)
{
- NTSTATUS nt_status = gensec_krb5_server_start(gensec_security);
+ return gensec_krb5_common_server_start(gensec_security, false);
+}
- if (NT_STATUS_IS_OK(nt_status)) {
- struct gensec_krb5_state *gensec_krb5_state;
- gensec_krb5_state = gensec_security->private_data;
- gensec_krb5_state->gssapi = True;
- }
- return nt_status;
+static NTSTATUS gensec_fake_gssapi_krb5_server_start(struct gensec_security *gensec_security)
+{
+ return gensec_krb5_common_server_start(gensec_security, true);
}
-static NTSTATUS gensec_krb5_client_start(struct gensec_security *gensec_security)
+static NTSTATUS gensec_krb5_common_client_start(struct gensec_security *gensec_security, bool gssapi)
{
+ const char *hostname;
struct gensec_krb5_state *gensec_krb5_state;
- krb5_error_code ret;
NTSTATUS nt_status;
- struct ccache_container *ccache_container;
- const char *hostname;
- krb5_flags ap_req_options = AP_OPTS_USE_SUBKEY | AP_OPTS_MUTUAL_REQUIRED;
-
- const char *principal;
- krb5_data in_data;
-
hostname = gensec_get_target_hostname(gensec_security);
if (!hostname) {
DEBUG(1, ("Could not determine hostname for target computer, cannot use kerberos\n"));
return NT_STATUS_INVALID_PARAMETER;
}
- nt_status = gensec_krb5_start(gensec_security);
+ nt_status = gensec_krb5_start(gensec_security, gssapi);
if (!NT_STATUS_IS_OK(nt_status)) {
return nt_status;
}
- gensec_krb5_state = gensec_security->private_data;
+ gensec_krb5_state = (struct gensec_krb5_state *)gensec_security->private_data;
gensec_krb5_state->state_position = GENSEC_KRB5_CLIENT_START;
+ gensec_krb5_state->ap_req_options = AP_OPTS_USE_SUBKEY;
- ret = cli_credentials_get_ccache(gensec_get_credentials(gensec_security), &ccache_container);
- if (ret) {
- DEBUG(1,("gensec_krb5_start: cli_credentials_get_ccache failed: %s\n",
- error_message(ret)));
- return NT_STATUS_UNSUCCESSFUL;
+ if (gensec_krb5_state->gssapi) {
+ /* The Fake GSSAPI modal emulates Samba3, which does not do mutual authentication */
+ if (gensec_setting_bool(gensec_security->settings, "gensec_fake_gssapi_krb5", "mutual", false)) {
+ gensec_krb5_state->ap_req_options |= AP_OPTS_MUTUAL_REQUIRED;
+ }
+ } else {
+ /* The wrapping for KPASSWD (a user of the raw KRB5 API) should be mutually authenticated */
+ if (gensec_setting_bool(gensec_security->settings, "gensec_krb5", "mutual", true)) {
+ gensec_krb5_state->ap_req_options |= AP_OPTS_MUTUAL_REQUIRED;
+ }
}
+ return NT_STATUS_OK;
+}
+static NTSTATUS gensec_krb5_common_client_creds(struct gensec_security *gensec_security,
+ struct tevent_context *ev,
+ bool gssapi)
+{
+ struct gensec_krb5_state *gensec_krb5_state;
+ krb5_error_code ret;
+ struct ccache_container *ccache_container;
+ const char *error_string;
+ const char *principal;
+ const char *hostname;
+ krb5_data in_data;
+ struct tevent_context *previous_ev;
+
+ gensec_krb5_state = (struct gensec_krb5_state *)gensec_security->private_data;
+
+ principal = gensec_get_target_principal(gensec_security);
+ hostname = gensec_get_target_hostname(gensec_security);
+
+ ret = cli_credentials_get_ccache(gensec_get_credentials(gensec_security),
+ ev,
+ gensec_security->settings->lp_ctx, &ccache_container, &error_string);
+ switch (ret) {
+ case 0:
+ break;
+ case KRB5KDC_ERR_PREAUTH_FAILED:
+ case KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN:
+ return NT_STATUS_LOGON_FAILURE;
+ case KRB5_KDC_UNREACH:
+ DEBUG(3, ("Cannot reach a KDC we require to contact %s: %s\n", principal, error_string));
+ return NT_STATUS_INVALID_PARAMETER; /* Make SPNEGO ignore us, we can't go any further here */
+ case KRB5_CC_NOTFOUND:
+ case KRB5_CC_END:
+ DEBUG(3, ("Error preparing credentials we require to contact %s : %s\n", principal, error_string));
+ return NT_STATUS_INVALID_PARAMETER; /* Make SPNEGO ignore us, we can't go any further here */
+ default:
+ DEBUG(1, ("gensec_krb5_start: Aquiring initiator credentials failed: %s\n", error_string));
+ return NT_STATUS_UNSUCCESSFUL;
+ }
in_data.length = 0;
- principal = gensec_get_target_principal(gensec_security);
- if (principal && lp_client_use_spnego_principal()) {
+ /* Do this every time, in case we have weird recursive issues here */
+ ret = smb_krb5_context_set_event_ctx(gensec_krb5_state->smb_krb5_context, ev, &previous_ev);
+ if (ret != 0) {
+ DEBUG(1, ("gensec_krb5_start: Setting event context failed\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+ if (principal) {
krb5_principal target_principal;
ret = krb5_parse_name(gensec_krb5_state->smb_krb5_context->krb5_context, principal,
&target_principal);
if (ret == 0) {
ret = krb5_mk_req_exact(gensec_krb5_state->smb_krb5_context->krb5_context,
&gensec_krb5_state->auth_context,
- ap_req_options,
+ gensec_krb5_state->ap_req_options,
target_principal,
&in_data, ccache_container->ccache,
&gensec_krb5_state->enc_ticket);
} else {
ret = krb5_mk_req(gensec_krb5_state->smb_krb5_context->krb5_context,
&gensec_krb5_state->auth_context,
- ap_req_options,
+ gensec_krb5_state->ap_req_options,
gensec_get_target_service(gensec_security),
hostname,
&in_data, ccache_container->ccache,
&gensec_krb5_state->enc_ticket);
}
+
+ smb_krb5_context_remove_event_ctx(gensec_krb5_state->smb_krb5_context, previous_ev, ev);
+
switch (ret) {
case 0:
return NT_STATUS_OK;
}
}
+static NTSTATUS gensec_krb5_client_start(struct gensec_security *gensec_security)
+{
+ return gensec_krb5_common_client_start(gensec_security, false);
+}
+
static NTSTATUS gensec_fake_gssapi_krb5_client_start(struct gensec_security *gensec_security)
{
- NTSTATUS nt_status = gensec_krb5_client_start(gensec_security);
+ return gensec_krb5_common_client_start(gensec_security, true);
+}
+
+
+/*
+ generate a krb5 GSS-API wrapper packet given a ticket
+*/
+static DATA_BLOB gensec_gssapi_gen_krb5_wrap(TALLOC_CTX *mem_ctx, const DATA_BLOB *ticket, const uint8_t tok_id[2])
+{
+ struct asn1_data *data;
+ DATA_BLOB ret;
- if (NT_STATUS_IS_OK(nt_status)) {
- struct gensec_krb5_state *gensec_krb5_state;
- gensec_krb5_state = gensec_security->private_data;
- gensec_krb5_state->gssapi = True;
+ data = asn1_init(mem_ctx);
+ if (!data || !ticket->data) {
+ return data_blob(NULL,0);
}
- return nt_status;
-}
-/**
- * Check if the packet is one for this mechansim
- *
- * @param gensec_security GENSEC state
- * @param in The request, as a DATA_BLOB
- * @return Error, INVALID_PARAMETER if it's not a packet for us
- * or NT_STATUS_OK if the packet is ok.
- */
+ asn1_push_tag(data, ASN1_APPLICATION(0));
+ asn1_write_OID(data, GENSEC_OID_KERBEROS5);
-static NTSTATUS gensec_fake_gssapi_krb5_magic(struct gensec_security *gensec_security,
- const DATA_BLOB *in)
+ asn1_write(data, tok_id, 2);
+ asn1_write(data, ticket->data, ticket->length);
+ asn1_pop_tag(data);
+
+ if (data->has_error) {
+ DEBUG(1,("Failed to build krb5 wrapper at offset %d\n", (int)data->ofs));
+ asn1_free(data);
+ return data_blob(NULL,0);
+ }
+
+ ret = data_blob_talloc(mem_ctx, data->data, data->length);
+ asn1_free(data);
+
+ return ret;
+}
+
+/*
+ parse a krb5 GSS-API wrapper packet giving a ticket
+*/
+static bool gensec_gssapi_parse_krb5_wrap(TALLOC_CTX *mem_ctx, const DATA_BLOB *blob, DATA_BLOB *ticket, uint8_t tok_id[2])
{
- if (gensec_gssapi_check_oid(in, GENSEC_OID_KERBEROS5)) {
- return NT_STATUS_OK;
+ bool ret;
+ struct asn1_data *data = asn1_init(mem_ctx);
+ int data_remaining;
+
+ if (!data) {
+ return false;
+ }
+
+ asn1_load(data, *blob);
+ asn1_start_tag(data, ASN1_APPLICATION(0));
+ asn1_check_OID(data, GENSEC_OID_KERBEROS5);
+
+ data_remaining = asn1_tag_remaining(data);
+
+ if (data_remaining < 3) {
+ data->has_error = true;
} else {
- return NT_STATUS_INVALID_PARAMETER;
+ asn1_read(data, tok_id, 2);
+ data_remaining -= 2;
+ *ticket = data_blob_talloc(mem_ctx, NULL, data_remaining);
+ asn1_read(data, ticket->data, ticket->length);
}
+
+ asn1_end_tag(data);
+
+ ret = !data->has_error;
+
+ asn1_free(data);
+
+ return ret;
}
+/* Taken from accept_sec_context.c,v 1.65 */
+static
+krb5_error_code smb_rd_req_return_stuff(krb5_context context,
+ krb5_auth_context *auth_context,
+ const krb5_data *inbuf,
+ krb5_keytab keytab,
+ krb5_principal acceptor_principal,
+ krb5_data *outbuf,
+ krb5_ticket **ticket,
+ krb5_keyblock **keyblock)
+{
+ krb5_rd_req_in_ctx in = NULL;
+ krb5_rd_req_out_ctx out = NULL;
+ krb5_error_code kret;
+
+ *keyblock = NULL;
+ *ticket = NULL;
+ outbuf->length = 0;
+ outbuf->data = NULL;
+
+ kret = krb5_rd_req_in_ctx_alloc(context, &in);
+ if (kret == 0)
+ kret = krb5_rd_req_in_set_keytab(context, in, keytab);
+ if (kret) {
+ if (in)
+ krb5_rd_req_in_ctx_free(context, in);
+ return kret;
+ }
+
+ kret = krb5_rd_req_ctx(context,
+ auth_context,
+ inbuf,
+ acceptor_principal,
+ in, &out);
+ krb5_rd_req_in_ctx_free(context, in);
+ if (kret) {
+ return kret;
+ }
+
+ /*
+ * We need to remember some data on the context_handle.
+ */
+ kret = krb5_rd_req_out_get_ticket(context, out,
+ ticket);
+ if (kret == 0) {
+ kret = krb5_rd_req_out_get_keyblock(context, out,
+ keyblock);
+ }
+ krb5_rd_req_out_ctx_free(context, out);
+
+ if (kret == 0) {
+ kret = krb5_mk_rep(context, *auth_context, outbuf);
+ }
+
+ if (kret) {
+ krb5_free_ticket(context, *ticket);
+ krb5_free_keyblock(context, *keyblock);
+ krb5_data_free(outbuf);
+ }
+ return kret;
+}
/**
* Next state function for the Krb5 GENSEC mechanism
*
static NTSTATUS gensec_krb5_update(struct gensec_security *gensec_security,
TALLOC_CTX *out_mem_ctx,
+ struct tevent_context *ev,
const DATA_BLOB in, DATA_BLOB *out)
{
- struct gensec_krb5_state *gensec_krb5_state = gensec_security->private_data;
+ struct gensec_krb5_state *gensec_krb5_state = (struct gensec_krb5_state *)gensec_security->private_data;
krb5_error_code ret = 0;
NTSTATUS nt_status;
{
DATA_BLOB unwrapped_out;
+ nt_status = gensec_krb5_common_client_creds(gensec_security, ev, gensec_krb5_state->gssapi);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ return nt_status;
+ }
+
if (gensec_krb5_state->gssapi) {
unwrapped_out = data_blob_talloc(out_mem_ctx, gensec_krb5_state->enc_ticket.data, gensec_krb5_state->enc_ticket.length);
} else {
*out = data_blob_talloc(out_mem_ctx, gensec_krb5_state->enc_ticket.data, gensec_krb5_state->enc_ticket.length);
}
- gensec_krb5_state->state_position = GENSEC_KRB5_CLIENT_MUTUAL_AUTH;
- nt_status = NT_STATUS_MORE_PROCESSING_REQUIRED;
+ if (gensec_krb5_state->ap_req_options & AP_OPTS_MUTUAL_REQUIRED) {
+ gensec_krb5_state->state_position = GENSEC_KRB5_CLIENT_MUTUAL_AUTH;
+ nt_status = NT_STATUS_MORE_PROCESSING_REQUIRED;
+ } else {
+ gensec_krb5_state->state_position = GENSEC_KRB5_DONE;
+ nt_status = NT_STATUS_OK;
+ }
return nt_status;
}
if (ret) {
DEBUG(1,("krb5_rd_rep (mutual authentication) failed (%s)\n",
smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context, ret, out_mem_ctx)));
- dump_data_pw("Mutual authentication message:\n", inbuf.data, inbuf.length);
+ dump_data_pw("Mutual authentication message:\n", (uint8_t *)inbuf.data, inbuf.length);
nt_status = NT_STATUS_ACCESS_DENIED;
} else {
*out = data_blob(NULL, 0);
{
DATA_BLOB unwrapped_in;
DATA_BLOB unwrapped_out = data_blob(NULL, 0);
+ krb5_data inbuf, outbuf;
uint8_t tok_id[2];
+ struct keytab_container *keytab;
+ krb5_principal server_in_keytab;
+ const char *error_string;
+ enum credentials_obtained obtained;
if (!in.data) {
return NT_STATUS_INVALID_PARAMETER;
}
+ /* Grab the keytab, however generated */
+ ret = cli_credentials_get_keytab(gensec_get_credentials(gensec_security),
+ gensec_security->settings->lp_ctx, &keytab);
+ if (ret) {
+ return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
+ }
+
+ /* This ensures we lookup the correct entry in that
+ * keytab. A NULL principal is acceptable, and means
+ * that the krb5 libs should search the keytab at
+ * accept time for any matching key */
+ ret = principal_from_credentials(out_mem_ctx, gensec_get_credentials(gensec_security),
+ gensec_krb5_state->smb_krb5_context,
+ &server_in_keytab, &obtained, &error_string);
+
+ if (ret) {
+ DEBUG(2,("Failed to make credentials from principal: %s\n", error_string));
+ return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
+ }
+
/* Parse the GSSAPI wrapping, if it's there... (win2k3 allows it to be omited) */
if (gensec_krb5_state->gssapi
&& gensec_gssapi_parse_krb5_wrap(out_mem_ctx, &in, &unwrapped_in, tok_id)) {
- nt_status = ads_verify_ticket(out_mem_ctx,
- gensec_krb5_state->smb_krb5_context,
- &gensec_krb5_state->auth_context,
- gensec_get_credentials(gensec_security),
- gensec_get_target_service(gensec_security), &unwrapped_in,
- &gensec_krb5_state->ticket, &unwrapped_out,
- &gensec_krb5_state->keyblock);
+ inbuf.data = unwrapped_in.data;
+ inbuf.length = unwrapped_in.length;
} else {
- /* TODO: check the tok_id */
- nt_status = ads_verify_ticket(out_mem_ctx,
- gensec_krb5_state->smb_krb5_context,
- &gensec_krb5_state->auth_context,
- gensec_get_credentials(gensec_security),
- gensec_get_target_service(gensec_security),
- &in,
- &gensec_krb5_state->ticket, &unwrapped_out,
- &gensec_krb5_state->keyblock);
+ inbuf.data = in.data;
+ inbuf.length = in.length;
}
- if (!NT_STATUS_IS_OK(nt_status)) {
- return nt_status;
- }
+ ret = smb_rd_req_return_stuff(gensec_krb5_state->smb_krb5_context->krb5_context,
+ &gensec_krb5_state->auth_context,
+ &inbuf, keytab->keytab, server_in_keytab,
+ &outbuf,
+ &gensec_krb5_state->ticket,
+ &gensec_krb5_state->keyblock);
- if (NT_STATUS_IS_OK(nt_status)) {
- gensec_krb5_state->state_position = GENSEC_KRB5_DONE;
- /* wrap that up in a nice GSS-API wrapping */
- if (gensec_krb5_state->gssapi) {
- *out = gensec_gssapi_gen_krb5_wrap(out_mem_ctx, &unwrapped_out, TOK_ID_KRB_AP_REP);
- } else {
- *out = unwrapped_out;
- }
+ if (ret) {
+ return NT_STATUS_LOGON_FAILURE;
}
- return nt_status;
+ unwrapped_out.data = (uint8_t *)outbuf.data;
+ unwrapped_out.length = outbuf.length;
+ gensec_krb5_state->state_position = GENSEC_KRB5_DONE;
+ /* wrap that up in a nice GSS-API wrapping */
+ if (gensec_krb5_state->gssapi) {
+ *out = gensec_gssapi_gen_krb5_wrap(out_mem_ctx, &unwrapped_out, TOK_ID_KRB_AP_REP);
+ } else {
+ *out = data_blob_talloc(out_mem_ctx, outbuf.data, outbuf.length);
+ }
+ krb5_data_free(&outbuf);
+ return NT_STATUS_OK;
}
case GENSEC_KRB5_DONE:
}
static NTSTATUS gensec_krb5_session_key(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
DATA_BLOB *session_key)
{
- struct gensec_krb5_state *gensec_krb5_state = gensec_security->private_data;
+ struct gensec_krb5_state *gensec_krb5_state = (struct gensec_krb5_state *)gensec_security->private_data;
krb5_context context = gensec_krb5_state->smb_krb5_context->krb5_context;
krb5_auth_context auth_context = gensec_krb5_state->auth_context;
krb5_keyblock *skey;
krb5_error_code err = -1;
- if (gensec_krb5_state->session_key.data) {
- *session_key = gensec_krb5_state->session_key;
- return NT_STATUS_OK;
+ if (gensec_krb5_state->state_position != GENSEC_KRB5_DONE) {
+ return NT_STATUS_NO_USER_SESSION_KEY;
}
switch (gensec_security->gensec_role) {
if (err == 0 && skey != NULL) {
DEBUG(10, ("Got KRB5 session key of length %d\n",
(int)KRB5_KEY_LENGTH(skey)));
- gensec_krb5_state->session_key = data_blob_talloc(gensec_krb5_state,
- KRB5_KEY_DATA(skey), KRB5_KEY_LENGTH(skey));
- *session_key = gensec_krb5_state->session_key;
+ *session_key = data_blob_talloc(mem_ctx,
+ KRB5_KEY_DATA(skey), KRB5_KEY_LENGTH(skey));
dump_data_pw("KRB5 Session Key:\n", session_key->data, session_key->length);
krb5_free_keyblock(context, skey);
}
static NTSTATUS gensec_krb5_session_info(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
struct auth_session_info **_session_info)
{
NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
- struct gensec_krb5_state *gensec_krb5_state = gensec_security->private_data;
+ struct gensec_krb5_state *gensec_krb5_state = (struct gensec_krb5_state *)gensec_security->private_data;
krb5_context context = gensec_krb5_state->smb_krb5_context->krb5_context;
- struct auth_serversupplied_info *server_info = NULL;
struct auth_session_info *session_info = NULL;
- struct PAC_LOGON_INFO *logon_info;
krb5_principal client_principal;
+ char *principal_string;
- DATA_BLOB pac;
+ DATA_BLOB pac_blob, *pac_blob_ptr = NULL;
krb5_data pac_data;
krb5_error_code ret;
- TALLOC_CTX *mem_ctx = talloc_new(gensec_security);
- if (!mem_ctx) {
+ TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
+ if (!tmp_ctx) {
return NT_STATUS_NO_MEMORY;
}
+ ret = krb5_ticket_get_client(context, gensec_krb5_state->ticket, &client_principal);
+ if (ret) {
+ DEBUG(5, ("krb5_ticket_get_client failed to get cleint principal: %s\n",
+ smb_get_krb5_error_message(context,
+ ret, tmp_ctx)));
+ talloc_free(tmp_ctx);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ ret = krb5_unparse_name(gensec_krb5_state->smb_krb5_context->krb5_context,
+ client_principal, &principal_string);
+ if (ret) {
+ DEBUG(1, ("Unable to parse client principal: %s\n",
+ smb_get_krb5_error_message(context,
+ ret, tmp_ctx)));
+ krb5_free_principal(context, client_principal);
+ talloc_free(tmp_ctx);
+ return NT_STATUS_NO_MEMORY;
+ }
+
ret = krb5_ticket_get_authorization_data_type(context, gensec_krb5_state->ticket,
KRB5_AUTHDATA_WIN2K_PAC,
&pac_data);
if (ret) {
+ /* NO pac */
DEBUG(5, ("krb5_ticket_get_authorization_data_type failed to find PAC: %s\n",
smb_get_krb5_error_message(context,
- ret, mem_ctx)));
+ ret, tmp_ctx)));
} else {
- pac = data_blob_talloc(mem_ctx, pac_data.data, pac_data.length);
- if (!pac.data) {
- talloc_free(mem_ctx);
+ /* Found pac */
+ pac_blob = data_blob_talloc(tmp_ctx, pac_data.data, pac_data.length);
+ if (!pac_blob.data) {
+ free(principal_string);
+ krb5_free_principal(context, client_principal);
+ talloc_free(tmp_ctx);
return NT_STATUS_NO_MEMORY;
}
- ret = krb5_ticket_get_client(context, gensec_krb5_state->ticket, &client_principal);
- if (ret) {
- DEBUG(5, ("krb5_ticket_get_client failed to get cleint principal: %s\n",
- smb_get_krb5_error_message(context,
- ret, mem_ctx)));
- talloc_free(mem_ctx);
- return NT_STATUS_NO_MEMORY;
- }
-
/* decode and verify the pac */
- nt_status = kerberos_pac_logon_info(gensec_krb5_state, &logon_info, pac,
- gensec_krb5_state->smb_krb5_context->krb5_context,
- NULL, gensec_krb5_state->keyblock,
- client_principal,
- gensec_krb5_state->ticket->ticket.authtime, NULL);
- krb5_free_principal(context, client_principal);
+ nt_status = kerberos_decode_pac(gensec_krb5_state,
+ pac_blob,
+ gensec_krb5_state->smb_krb5_context->krb5_context,
+ NULL, gensec_krb5_state->keyblock,
+ client_principal,
+ gensec_krb5_state->ticket->ticket.authtime, NULL);
- if (NT_STATUS_IS_OK(nt_status)) {
- union netr_Validation validation;
- validation.sam3 = &logon_info->info3;
- nt_status = make_server_info_netlogon_validation(mem_ctx,
- NULL,
- 3, &validation,
- &server_info);
- }
- }
-
-
-
- /* IF we have the PAC - otherwise we need to get this
- * data from elsewere - local ldb, or (TODO) lookup of some
- * kind...
- */
- if (!NT_STATUS_IS_OK(nt_status)) {
- /* NO pac, or can't parse or verify it */
- char *principal_string;
- ret = krb5_ticket_get_client(context, gensec_krb5_state->ticket, &client_principal);
- if (ret) {
- DEBUG(5, ("krb5_ticket_get_client failed to get cleint principal: %s\n",
- smb_get_krb5_error_message(context,
- ret, mem_ctx)));
- talloc_free(mem_ctx);
- return NT_STATUS_NO_MEMORY;
- }
-
- ret = krb5_unparse_name(gensec_krb5_state->smb_krb5_context->krb5_context,
- client_principal, &principal_string);
- krb5_free_principal(context, client_principal);
- if (ret) {
- talloc_free(mem_ctx);
- return NT_STATUS_NO_MEMORY;
- }
-
- nt_status = sam_get_server_info_principal(mem_ctx, principal_string,
- &server_info);
- free(principal_string);
-
if (!NT_STATUS_IS_OK(nt_status)) {
- talloc_free(mem_ctx);
+ free(principal_string);
+ krb5_free_principal(context, client_principal);
+ talloc_free(tmp_ctx);
return nt_status;
}
+
+ pac_blob_ptr = &pac_blob;
}
- /* references the server_info into the session_info */
- nt_status = auth_generate_session_info(mem_ctx, server_info, &session_info);
+ nt_status = gensec_generate_session_info_pac(tmp_ctx,
+ gensec_security,
+ gensec_krb5_state->smb_krb5_context,
+ pac_blob_ptr, principal_string,
+ gensec_get_remote_address(gensec_security),
+ &session_info);
+
+ free(principal_string);
+ krb5_free_principal(context, client_principal);
if (!NT_STATUS_IS_OK(nt_status)) {
- talloc_free(mem_ctx);
+ talloc_free(tmp_ctx);
return nt_status;
}
- nt_status = gensec_krb5_session_key(gensec_security, &session_info->session_key);
+ nt_status = gensec_krb5_session_key(gensec_security, session_info, &session_info->session_key);
if (!NT_STATUS_IS_OK(nt_status)) {
- talloc_free(mem_ctx);
+ talloc_free(tmp_ctx);
return nt_status;
}
- *_session_info = session_info;
+ *_session_info = talloc_steal(mem_ctx, session_info);
- talloc_steal(gensec_krb5_state, session_info);
- talloc_free(mem_ctx);
+ talloc_free(tmp_ctx);
return NT_STATUS_OK;
}
const DATA_BLOB *in,
DATA_BLOB *out)
{
- struct gensec_krb5_state *gensec_krb5_state = gensec_security->private_data;
+ struct gensec_krb5_state *gensec_krb5_state = (struct gensec_krb5_state *)gensec_security->private_data;
krb5_context context = gensec_krb5_state->smb_krb5_context->krb5_context;
krb5_auth_context auth_context = gensec_krb5_state->auth_context;
krb5_error_code ret;
const DATA_BLOB *in,
DATA_BLOB *out)
{
- struct gensec_krb5_state *gensec_krb5_state = gensec_security->private_data;
+ struct gensec_krb5_state *gensec_krb5_state = (struct gensec_krb5_state *)gensec_security->private_data;
krb5_context context = gensec_krb5_state->smb_krb5_context->krb5_context;
krb5_auth_context auth_context = gensec_krb5_state->auth_context;
krb5_error_code ret;
return NT_STATUS_OK;
}
-static BOOL gensec_krb5_have_feature(struct gensec_security *gensec_security,
+static bool gensec_krb5_have_feature(struct gensec_security *gensec_security,
uint32_t feature)
{
- struct gensec_krb5_state *gensec_krb5_state = gensec_security->private_data;
+ struct gensec_krb5_state *gensec_krb5_state = (struct gensec_krb5_state *)gensec_security->private_data;
if (feature & GENSEC_FEATURE_SESSION_KEY) {
- return True;
+ return true;
}
if (!gensec_krb5_state->gssapi &&
(feature & GENSEC_FEATURE_SEAL)) {
- return True;
+ return true;
}
- return False;
+ return false;
}
static const char *gensec_krb5_oids[] = {
static const struct gensec_security_ops gensec_fake_gssapi_krb5_security_ops = {
.name = "fake_gssapi_krb5",
- .sasl_name = "GSSAPI",
.auth_type = DCERPC_AUTH_TYPE_KRB5,
.oid = gensec_krb5_oids,
.client_start = gensec_fake_gssapi_krb5_client_start,
.server_start = gensec_fake_gssapi_krb5_server_start,
.update = gensec_krb5_update,
- .magic = gensec_fake_gssapi_krb5_magic,
+ .magic = gensec_magic_check_krb5_oid,
.session_key = gensec_krb5_session_key,
.session_info = gensec_krb5_session_info,
.have_feature = gensec_krb5_have_feature,
- .enabled = False,
- .kerberos = True
+ .enabled = false,
+ .kerberos = true,
+ .priority = GENSEC_KRB5
};
static const struct gensec_security_ops gensec_krb5_security_ops = {
.have_feature = gensec_krb5_have_feature,
.wrap = gensec_krb5_wrap,
.unwrap = gensec_krb5_unwrap,
- .enabled = True,
- .kerberos = True
+ .enabled = true,
+ .kerberos = true,
+ .priority = GENSEC_KRB5
};
-NTSTATUS gensec_krb5_init(void)
+_PUBLIC_ NTSTATUS gensec_krb5_init(void)
{
NTSTATUS ret;
- auth_init();
-
ret = gensec_register(&gensec_krb5_security_ops);
if (!NT_STATUS_IS_OK(ret)) {
DEBUG(0,("Failed to register '%s' gensec backend!\n",
git.samba.org / idra / samba.git / blobdiff