#include "auth_generic.h"
#include "auth/gensec/gensec.h"
#include "../libcli/smb/smbXcli_base.h"
+#include "auth/credentials/credentials.h"
/****************************************************************************
Get UNIX extensions version info.
return status;
}
-/******************************************************************************
- Make a client state struct.
-******************************************************************************/
-
-static struct smb_trans_enc_state *make_cli_enc_state(enum smb_trans_enc_type smb_enc_type)
-{
- struct smb_trans_enc_state *es = NULL;
- es = SMB_MALLOC_P(struct smb_trans_enc_state);
- if (!es) {
- return NULL;
- }
- ZERO_STRUCTP(es);
- es->smb_enc_type = smb_enc_type;
-
-#if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
- if (smb_enc_type == SMB_TRANS_ENC_GSS) {
- es->s.gss_state = SMB_MALLOC_P(struct smb_tran_enc_state_gss);
- if (!es->s.gss_state) {
- SAFE_FREE(es);
- return NULL;
- }
- ZERO_STRUCTP(es->s.gss_state);
- }
-#endif
- return es;
-}
-
/******************************************************************************
Start a raw ntlmssp encryption.
******************************************************************************/
DATA_BLOB param_out = data_blob_null;
NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
struct auth_generic_state *auth_generic_state;
- struct smb_trans_enc_state *es = make_cli_enc_state(SMB_TRANS_ENC_NTLM);
-
+ struct smb_trans_enc_state *es = talloc_zero(NULL, struct smb_trans_enc_state);
if (!es) {
return NT_STATUS_NO_MEMORY;
}
- status = auth_generic_client_prepare(NULL,
+ status = auth_generic_client_prepare(es,
&auth_generic_state);
if (!NT_STATUS_IS_OK(status)) {
goto fail;
/* We only need the gensec_security part from here.
* es is a malloc()ed pointer, so we cannot make
* gensec_security a talloc child */
- es->s.gensec_security = talloc_move(NULL,
- &auth_generic_state->gensec_security);
- smb1cli_conn_set_encryption(cli->conn, es);
- es = NULL;
+ es->gensec_security = talloc_move(NULL,
+ &auth_generic_state->gensec_security);
+ smb1cli_conn_set_encryption(cli->conn, &es);
}
fail:
- TALLOC_FREE(auth_generic_state);
- common_free_encryption_state(&es);
+ TALLOC_FREE(es);
return status;
}
-#if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
-
-#ifndef SMB_GSS_REQUIRED_FLAGS
-#define SMB_GSS_REQUIRED_FLAGS (GSS_C_CONF_FLAG|GSS_C_INTEG_FLAG|GSS_C_MUTUAL_FLAG|GSS_C_REPLAY_FLAG|GSS_C_SEQUENCE_FLAG)
-#endif
-
/******************************************************************************
- Get client gss blob to send to a server.
+ Start a SPNEGO gssapi encryption context.
******************************************************************************/
-static NTSTATUS make_cli_gss_blob(TALLOC_CTX *ctx,
- struct smb_trans_enc_state *es,
- const char *service,
- const char *host,
- NTSTATUS status_in,
- DATA_BLOB spnego_blob_in,
- DATA_BLOB *p_blob_out)
+NTSTATUS cli_gss_smb_encryption_start(struct cli_state *cli)
{
- const char *krb_mechs[] = {OID_KERBEROS5, NULL};
- OM_uint32 ret;
- OM_uint32 min;
- gss_name_t srv_name;
- gss_buffer_desc input_name;
- gss_buffer_desc *p_tok_in;
- gss_buffer_desc tok_out, tok_in;
- DATA_BLOB blob_out = data_blob_null;
- DATA_BLOB blob_in = data_blob_null;
- OM_uint32 ret_flags = 0;
- NTSTATUS status = NT_STATUS_OK;
-
- memset(&tok_out, '\0', sizeof(tok_out));
-
- /* Guess the realm based on the supplied service, and avoid the GSS libs
- doing DNS lookups which may fail.
+ DATA_BLOB blob_recv = data_blob_null;
+ DATA_BLOB blob_send = data_blob_null;
+ DATA_BLOB param_out = data_blob_null;
+ NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
+ struct auth_generic_state *auth_generic_state;
+<<<<<<< HEAD
+ struct smb_trans_enc_state *es = talloc_zero(NULL, struct smb_trans_enc_state);
+=======
+ struct smb_trans_enc_state *es;
+>>>>>>> 7efc635... s3-libsmb: Convert struct smb_trans_enc_state to talloc
- TODO: Loop with the KDC on some more combinations (local
- realm in particular), possibly falling back to
- GSS_C_NT_HOSTBASED_SERVICE
- */
- input_name.value = kerberos_get_principal_from_service_hostname(talloc_tos(),
- service, host);
- if (!input_name.value) {
+ es = talloc_zero(NULL, struct smb_trans_enc_state);
+ if (!es) {
return NT_STATUS_NO_MEMORY;
}
- input_name.length = strlen((char *)input_name.value);
- ret = gss_import_name(&min, &input_name,
- GSS_C_NT_USER_NAME,
- &srv_name);
- if (ret != GSS_S_COMPLETE) {
- TALLOC_FREE(input_name.value);
- return map_nt_error_from_gss(ret, min);
- }
-
- if (spnego_blob_in.length == 0) {
- p_tok_in = GSS_C_NO_BUFFER;
- } else {
- /* Remove the SPNEGO wrapper */
- if (!spnego_parse_auth_response(ctx, spnego_blob_in, status_in, OID_KERBEROS5, &blob_in)) {
- status = NT_STATUS_UNSUCCESSFUL;
- goto fail;
- }
- tok_in.value = blob_in.data;
- tok_in.length = blob_in.length;
- p_tok_in = &tok_in;
- }
-
- ret = gss_init_sec_context(&min,
- GSS_C_NO_CREDENTIAL, /* Use our default cred. */
- &es->s.gss_state->gss_ctx,
- srv_name,
- GSS_C_NO_OID, /* default OID. */
- GSS_C_MUTUAL_FLAG | GSS_C_REPLAY_FLAG | GSS_C_SEQUENCE_FLAG | GSS_C_DELEG_FLAG,
- GSS_C_INDEFINITE, /* requested ticket lifetime. */
- NULL, /* no channel bindings */
- p_tok_in,
- NULL, /* ignore mech type */
- &tok_out,
- &ret_flags,
- NULL); /* ignore time_rec */
-
- status = map_nt_error_from_gss(ret, min);
- if (!NT_STATUS_IS_OK(status) && !NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- ADS_STATUS adss = ADS_ERROR_GSS(ret, min);
- DEBUG(10,("make_cli_gss_blob: gss_init_sec_context failed with %s\n",
- ads_errstr(adss)));
- goto fail;
- }
- if ((ret_flags & SMB_GSS_REQUIRED_FLAGS) != SMB_GSS_REQUIRED_FLAGS) {
- status = NT_STATUS_ACCESS_DENIED;
+ status = auth_generic_client_prepare(es,
+ &auth_generic_state);
+ if (!NT_STATUS_IS_OK(status)) {
+ goto fail;
}
- blob_out = data_blob_talloc(ctx, tok_out.value, tok_out.length);
-
- /* Wrap in an SPNEGO wrapper */
- *p_blob_out = spnego_gen_negTokenInit(ctx, krb_mechs, &blob_out, NULL);
+ gensec_want_feature(auth_generic_state->gensec_security, GENSEC_FEATURE_SESSION_KEY);
+ gensec_want_feature(auth_generic_state->gensec_security, GENSEC_FEATURE_SEAL);
- fail:
+ cli_credentials_set_kerberos_state(auth_generic_state->credentials,
+ CRED_MUST_USE_KERBEROS);
- data_blob_free(&blob_out);
- data_blob_free(&blob_in);
- TALLOC_FREE(input_name.value);
- gss_release_name(&min, &srv_name);
- if (tok_out.value) {
- gss_release_buffer(&min, &tok_out);
+ status = gensec_set_target_service(auth_generic_state->gensec_security, "cifs");
+ if (!NT_STATUS_IS_OK(status)) {
+ goto fail;
}
- return status;
-}
-
-/******************************************************************************
- Start a SPNEGO gssapi encryption context.
-******************************************************************************/
-NTSTATUS cli_gss_smb_encryption_start(struct cli_state *cli)
-{
- DATA_BLOB blob_recv = data_blob_null;
- DATA_BLOB blob_send = data_blob_null;
- DATA_BLOB param_out = data_blob_null;
- NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
- fstring fqdn;
- const char *servicename;
- struct smb_trans_enc_state *es = make_cli_enc_state(SMB_TRANS_ENC_GSS);
+ status = gensec_set_target_hostname(auth_generic_state->gensec_security,
+ cli_state_remote_name(cli));
+ if (!NT_STATUS_IS_OK(status)) {
+ goto fail;
+ }
- if (!es) {
- return NT_STATUS_NO_MEMORY;
+ if (!NT_STATUS_IS_OK(status = auth_generic_client_start(auth_generic_state, GENSEC_OID_SPNEGO))) {
+ goto fail;
}
- servicename = "cifs";
- status = make_cli_gss_blob(talloc_tos(), es, servicename, cli_state_remote_name(cli), NT_STATUS_OK, blob_recv, &blob_send);
+ status = gensec_update(auth_generic_state->gensec_security, talloc_tos(),
+ NULL, blob_recv, &blob_send);
+
do {
data_blob_free(&blob_recv);
status = enc_blob_send_receive(cli, &blob_send, &blob_recv, ¶m_out);
es->enc_ctx_num = SVAL(param_out.data, 0);
}
data_blob_free(&blob_send);
- status = make_cli_gss_blob(talloc_tos(), es, servicename, fqdn, status, blob_recv, &blob_send);
+ status = gensec_update(auth_generic_state->gensec_security, talloc_tos(),
+ NULL, blob_recv, &blob_send);
} while (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED));
data_blob_free(&blob_recv);
+ if (NT_STATUS_IS_OK(status)) {
+ if (!gensec_have_feature(auth_generic_state->gensec_security,
+ GENSEC_FEATURE_SIGN) ||
+ !gensec_have_feature(auth_generic_state->gensec_security,
+ GENSEC_FEATURE_SEAL)) {
+ status = NT_STATUS_ACCESS_DENIED;
+ }
+ }
+
if (NT_STATUS_IS_OK(status)) {
es->enc_on = true;
/* Replace the old state, if any. */
- smb1cli_conn_set_encryption(cli->conn, es);
- es = NULL;
+ /* We only need the gensec_security part from here.
+ * es is a malloc()ed pointer, so we cannot make
+ * gensec_security a talloc child */
+ es->gensec_security = talloc_move(es,
+ &auth_generic_state->gensec_security);
+ TALLOC_FREE(auth_generic_state);
+ smb1cli_conn_set_encryption(cli->conn, &es);
}
-
- fail:
-
- common_free_encryption_state(&es);
+fail:
+ TALLOC_FREE(es);
return status;
}
-#else
-NTSTATUS cli_gss_smb_encryption_start(struct cli_state *cli)
-{
- return NT_STATUS_NOT_SUPPORTED;
-}
-#endif
/********************************************************************
Ensure a connection is encrypted.
git.samba.org / metze / samba / wip.git / blobdiff