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s3-auth Add hook to start a GENSEC mech to auth_samba4

Signed-off-by: Andrew Tridgell <tridge@samba.org>
This commit is contained in:
Andrew Bartlett 2011-07-21 14:48:59 +10:00
parent bba5f0a641
commit 63cb8059db
2 changed files with 89 additions and 1 deletions

View File

@ -24,6 +24,9 @@
#include "auth/auth_sam_reply.h"
#include "param/param.h"
#include "source4/lib/events/events.h"
#include "source4/lib/messaging/messaging.h"
#include "auth/gensec/gensec.h"
#include "source4/auth/credentials/credentials.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_AUTH
@ -92,6 +95,88 @@ static NTSTATUS check_samba4_security(const struct auth_context *auth_context,
return nt_status;
}
/* Hook to allow GENSEC to handle blob-based authentication
* mechanisms, without directly linking the mechansim code */
static NTSTATUS start_gensec(TALLOC_CTX *mem_ctx, const char *oid_string,
struct gensec_security **gensec_context)
{
NTSTATUS status;
struct loadparm_context *lp_ctx;
struct tevent_context *event_ctx;
TALLOC_CTX *frame = talloc_stackframe();
struct gensec_security *gensec_ctx;
struct imessaging_context *msg_ctx;
struct server_id *server_id;
struct cli_credentials *server_credentials;
lp_ctx = loadparm_init_s3(frame, loadparm_s3_context());
if (lp_ctx == NULL) {
DEBUG(1, ("loadparm_init_s3 failed\n"));
TALLOC_FREE(frame);
return NT_STATUS_INVALID_SERVER_STATE;
}
event_ctx = s4_event_context_init(mem_ctx);
if (event_ctx == NULL) {
DEBUG(1, ("s4_event_context_init failed\n"));
TALLOC_FREE(frame);
return NT_STATUS_INVALID_SERVER_STATE;
}
msg_ctx = imessaging_client_init(frame,
lpcfg_imessaging_path(frame, lp_ctx),
event_ctx);
if (msg_ctx == NULL) {
DEBUG(1, ("imessaging_init failed\n"));
TALLOC_FREE(frame);
return NT_STATUS_INVALID_SERVER_STATE;
}
server_credentials
= cli_credentials_init(frame);
if (!server_credentials) {
DEBUG(1, ("Failed to init server credentials"));
TALLOC_FREE(frame);
return NT_STATUS_INVALID_SERVER_STATE;
}
cli_credentials_set_conf(server_credentials, lp_ctx);
status = cli_credentials_set_machine_account(server_credentials, lp_ctx);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(10, ("Failed to obtain server credentials, perhaps a standalone server?: %s\n", nt_errstr(status)));
talloc_free(server_credentials);
server_credentials = NULL;
}
status = samba_server_gensec_start(mem_ctx,
event_ctx, msg_ctx,
lp_ctx, server_credentials, "cifs",
&gensec_ctx);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("Failed to start GENSEC server code: %s\n", nt_errstr(status)));
TALLOC_FREE(frame);
return status;
}
talloc_reparent(frame, gensec_ctx, msg_ctx);
talloc_reparent(frame, gensec_ctx, event_ctx);
talloc_reparent(frame, gensec_ctx, lp_ctx);
talloc_reparent(frame, gensec_ctx, server_credentials);
gensec_want_feature(gensec_ctx, GENSEC_FEATURE_SESSION_KEY);
gensec_want_feature(gensec_ctx, GENSEC_FEATURE_UNIX_TOKEN);
status = gensec_start_mech_by_oid(gensec_ctx, oid_string);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("Failed to start GENSEC %s server code: %s\n",
gensec_get_name_by_oid(gensec_ctx, oid_string), nt_errstr(status)));
TALLOC_FREE(frame);
return status;
}
*gensec_context = gensec_ctx;
return status;
}
/* module initialisation */
static NTSTATUS auth_init_samba4(struct auth_context *auth_context,
const char *param,
@ -99,12 +184,15 @@ static NTSTATUS auth_init_samba4(struct auth_context *auth_context,
{
struct auth_methods *result;
gensec_init();
result = talloc_zero(auth_context, struct auth_methods);
if (result == NULL) {
return NT_STATUS_NO_MEMORY;
}
result->name = "samba4";
result->auth = check_samba4_security;
result->start_gensec = start_gensec;
*auth_method = result;
return NT_STATUS_OK;

View File

@ -111,6 +111,6 @@ bld.SAMBA3_MODULE('auth_samba4',
subsystem='auth',
source='auth_samba4.c',
init_function='',
deps='auth4',
deps='auth4 samba_server_gensec gensec',
internal_module=bld.SAMBA3_IS_STATIC_MODULE('auth_samba4'),
enabled=bld.SAMBA3_IS_ENABLED_MODULE('auth_samba4'))