/* Unix SMB/CIFS implementation. Kerberos backend for GENSEC Copyright (C) Andrew Bartlett 2004 Copyright (C) Stefan Metzmacher 2005 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 (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 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. */ #include "includes.h" #include "system/kerberos.h" #include "system/network.h" #include "auth/kerberos/kerberos.h" #include "librpc/gen_ndr/ndr_krb5pac.h" #include "auth/auth.h" #undef DBGC_CLASS #define DBGC_CLASS DBGC_AUTH struct gensec_gssapi_state { gss_ctx_id_t gssapi_context; struct gss_channel_bindings_struct *input_chan_bindings; gss_name_t server_name; gss_name_t client_name; OM_uint32 want_flags, got_flags; const gss_OID_desc *gss_oid; DATA_BLOB session_key; DATA_BLOB pac; krb5_context krb5_context; krb5_ccache ccache; const char *ccache_name; gss_cred_id_t cred; }; static char *gssapi_error_string(TALLOC_CTX *mem_ctx, OM_uint32 maj_stat, OM_uint32 min_stat) { OM_uint32 disp_min_stat, disp_maj_stat; gss_buffer_desc maj_error_message; gss_buffer_desc min_error_message; OM_uint32 msg_ctx = 0; char *ret; maj_error_message.value = NULL; min_error_message.value = NULL; disp_maj_stat = gss_display_status(&disp_min_stat, maj_stat, GSS_C_GSS_CODE, GSS_C_NULL_OID, &msg_ctx, &maj_error_message); disp_maj_stat = gss_display_status(&disp_min_stat, min_stat, GSS_C_MECH_CODE, GSS_C_NULL_OID, &msg_ctx, &min_error_message); ret = talloc_asprintf(mem_ctx, "%s: %s", (char *)maj_error_message.value, (char *)min_error_message.value); gss_release_buffer(&disp_min_stat, &maj_error_message); gss_release_buffer(&disp_min_stat, &min_error_message); return ret; } static int gensec_gssapi_destory(void *ptr) { struct gensec_gssapi_state *gensec_gssapi_state = ptr; OM_uint32 maj_stat, min_stat; if (gensec_gssapi_state->cred != GSS_C_NO_CREDENTIAL) { maj_stat = gss_release_cred(&min_stat, &gensec_gssapi_state->cred); } if (gensec_gssapi_state->gssapi_context != GSS_C_NO_CONTEXT) { maj_stat = gss_delete_sec_context (&min_stat, &gensec_gssapi_state->gssapi_context, GSS_C_NO_BUFFER); } if (gensec_gssapi_state->server_name != GSS_C_NO_NAME) { maj_stat = gss_release_name(&min_stat, &gensec_gssapi_state->server_name); } if (gensec_gssapi_state->client_name != GSS_C_NO_NAME) { maj_stat = gss_release_name(&min_stat, &gensec_gssapi_state->client_name); } if (gensec_gssapi_state->krb5_context) { krb5_free_context(gensec_gssapi_state->krb5_context); } return 0; } static NTSTATUS gensec_gssapi_start(struct gensec_security *gensec_security) { struct gensec_gssapi_state *gensec_gssapi_state; krb5_error_code ret; gensec_gssapi_state = talloc(gensec_security, struct gensec_gssapi_state); if (!gensec_gssapi_state) { return NT_STATUS_NO_MEMORY; } gensec_security->private_data = gensec_gssapi_state; gensec_gssapi_state->gssapi_context = GSS_C_NO_CONTEXT; gensec_gssapi_state->server_name = GSS_C_NO_NAME; gensec_gssapi_state->client_name = GSS_C_NO_NAME; /* TODO: Fill in channel bindings */ gensec_gssapi_state->input_chan_bindings = GSS_C_NO_CHANNEL_BINDINGS; gensec_gssapi_state->want_flags = 0; gensec_gssapi_state->got_flags = 0; gensec_gssapi_state->session_key = data_blob(NULL, 0); gensec_gssapi_state->pac = data_blob(NULL, 0); gensec_gssapi_state->krb5_context = NULL; gensec_gssapi_state->cred = GSS_C_NO_CREDENTIAL; talloc_set_destructor(gensec_gssapi_state, gensec_gssapi_destory); if (gensec_security->want_features & GENSEC_FEATURE_SESSION_KEY) { #ifndef HAVE_GSSKRB5_GET_INITIATOR_SUBKEY /* GSSAPI won't give us the session keys, without the * right hooks. This is critical when requested, so * fail outright. */ return NT_STATUS_INVALID_PARAMETER; #endif } if (gensec_security->want_features & GENSEC_FEATURE_SIGN) { gensec_gssapi_state->want_flags |= GSS_C_INTEG_FLAG; } if (gensec_security->want_features & GENSEC_FEATURE_SEAL) { gensec_gssapi_state->want_flags |= GSS_C_CONF_FLAG; } if (gensec_security->want_features & GENSEC_FEATURE_DCE_STYLE) { #ifndef GSS_C_DCE_STYLE /* GSSAPI DCE_STYLE is critical when requested, so * fail outright */ return NT_STATUS_INVALID_PARAMETER; #else gensec_gssapi_state->want_flags |= GSS_C_DCE_STYLE; #endif } gensec_gssapi_state->gss_oid = gss_mech_krb5; ret = krb5_init_context(&gensec_gssapi_state->krb5_context); if (ret) { DEBUG(1,("gensec_krb5_start: krb5_init_context failed (%s)\n", smb_get_krb5_error_message(gensec_gssapi_state->krb5_context, ret, gensec_gssapi_state))); return NT_STATUS_INTERNAL_ERROR; } if (lp_realm() && *lp_realm()) { char *upper_realm = strupper_talloc(gensec_gssapi_state, lp_realm()); if (!upper_realm) { DEBUG(1,("gensec_krb5_start: could not uppercase realm: %s\n", lp_realm())); return NT_STATUS_NO_MEMORY; } ret = krb5_set_default_realm(gensec_gssapi_state->krb5_context, upper_realm); if (ret) { DEBUG(1,("gensec_krb5_start: krb5_set_default_realm failed (%s)\n", smb_get_krb5_error_message(gensec_gssapi_state->krb5_context, ret, gensec_gssapi_state))); return NT_STATUS_INTERNAL_ERROR; } } return NT_STATUS_OK; } static NTSTATUS gensec_gssapi_server_start(struct gensec_security *gensec_security) { NTSTATUS nt_status; struct gensec_gssapi_state *gensec_gssapi_state; nt_status = gensec_gssapi_start(gensec_security); if (!NT_STATUS_IS_OK(nt_status)) { return nt_status; } gensec_gssapi_state = gensec_security->private_data; return NT_STATUS_OK; } static NTSTATUS gensec_gssapi_client_start(struct gensec_security *gensec_security) { struct gensec_gssapi_state *gensec_gssapi_state; NTSTATUS nt_status; gss_buffer_desc name_token; OM_uint32 maj_stat, min_stat; const char *ccache_name; nt_status = gensec_gssapi_start(gensec_security); if (!NT_STATUS_IS_OK(nt_status)) { return nt_status; } gensec_gssapi_state = gensec_security->private_data; name_token.value = talloc_asprintf(gensec_gssapi_state, "%s@%s", gensec_get_target_service(gensec_security), gensec_get_target_hostname(gensec_security)); name_token.length = strlen(name_token.value); maj_stat = gss_import_name (&min_stat, &name_token, GSS_C_NT_HOSTBASED_SERVICE, &gensec_gssapi_state->server_name); if (maj_stat) { DEBUG(1, ("GSS Import name of %s failed: %s\n", (char *)name_token.value, gssapi_error_string(gensec_gssapi_state, maj_stat, min_stat))); return NT_STATUS_UNSUCCESSFUL; } name_token.value = cli_credentials_get_principal(gensec_get_credentials(gensec_security), gensec_gssapi_state), name_token.length = strlen(name_token.value); maj_stat = gss_import_name (&min_stat, &name_token, GSS_C_NT_USER_NAME, &gensec_gssapi_state->client_name); if (maj_stat) { DEBUG(1, ("GSS Import name of %s failed: %s\n", (char *)name_token.value, gssapi_error_string(gensec_gssapi_state, maj_stat, min_stat))); return NT_STATUS_UNSUCCESSFUL; } initialize_krb5_error_table(); nt_status = kinit_to_ccache(gensec_gssapi_state, gensec_get_credentials(gensec_security), gensec_gssapi_state->krb5_context, &gensec_gssapi_state->ccache, &gensec_gssapi_state->ccache_name); if (!NT_STATUS_IS_OK(nt_status)) { return nt_status; } #ifdef HAVE_GSS_KRB5_CCACHE_NAME /* FIXME, we need an alternate function */ maj_stat = gss_krb5_ccache_name(&min_stat, gensec_gssapi_state->ccache_name, NULL); if (maj_stat) { DEBUG(1, ("GSS krb5 ccache set %s failed: %s\n", ccache_name, gssapi_error_string(gensec_gssapi_state, maj_stat, min_stat))); return NT_STATUS_UNSUCCESSFUL; } #endif maj_stat = gss_acquire_cred(&min_stat, gensec_gssapi_state->client_name, GSS_C_INDEFINITE, GSS_C_NULL_OID_SET, GSS_C_INITIATE, &gensec_gssapi_state->cred, NULL, NULL); if (maj_stat) { DEBUG(1, ("Aquiring initiator credentails failed: %s\n", gssapi_error_string(gensec_gssapi_state, maj_stat, min_stat))); return NT_STATUS_UNSUCCESSFUL; } return NT_STATUS_OK; } /** * Next state function for the GSSAPI GENSEC mechanism * * @param gensec_gssapi_state GSSAPI State * @param out_mem_ctx The TALLOC_CTX for *out to be allocated on * @param in The request, as a DATA_BLOB * @param out The reply, as an talloc()ed DATA_BLOB, on *out_mem_ctx * @return Error, MORE_PROCESSING_REQUIRED if a reply is sent, * or NT_STATUS_OK if the user is authenticated. */ static NTSTATUS gensec_gssapi_update(struct gensec_security *gensec_security, TALLOC_CTX *out_mem_ctx, const DATA_BLOB in, DATA_BLOB *out) { struct gensec_gssapi_state *gensec_gssapi_state = gensec_security->private_data; NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL; OM_uint32 maj_stat, min_stat; OM_uint32 min_stat2; gss_buffer_desc input_token, output_token; gss_OID gss_oid_p; input_token.length = in.length; input_token.value = in.data; switch (gensec_security->gensec_role) { case GENSEC_CLIENT: { maj_stat = gss_init_sec_context(&min_stat, GSS_C_NO_CREDENTIAL, &gensec_gssapi_state->gssapi_context, gensec_gssapi_state->server_name, discard_const_p(gss_OID_desc, gensec_gssapi_state->gss_oid), gensec_gssapi_state->want_flags, 0, gensec_gssapi_state->input_chan_bindings, &input_token, NULL, &output_token, &gensec_gssapi_state->got_flags, /* ret flags */ NULL); break; } case GENSEC_SERVER: { maj_stat = gss_accept_sec_context(&min_stat, &gensec_gssapi_state->gssapi_context, GSS_C_NO_CREDENTIAL, &input_token, gensec_gssapi_state->input_chan_bindings, &gensec_gssapi_state->client_name, &gss_oid_p, &output_token, &gensec_gssapi_state->got_flags, NULL, NULL); gensec_gssapi_state->gss_oid = gss_oid_p; break; } default: return NT_STATUS_INVALID_PARAMETER; } *out = data_blob_talloc(out_mem_ctx, output_token.value, output_token.length); gss_release_buffer(&min_stat2, &output_token); if (maj_stat == GSS_S_COMPLETE) { return NT_STATUS_OK; } else if (maj_stat == GSS_S_CONTINUE_NEEDED) { return NT_STATUS_MORE_PROCESSING_REQUIRED; } else { if (maj_stat == GSS_S_FAILURE && (min_stat == KRB5KRB_AP_ERR_BADVERSION || min_stat == KRB5KRB_AP_ERR_MSG_TYPE)) { /* garbage input, possibly from the auto-mech detection */ return NT_STATUS_INVALID_PARAMETER; } DEBUG(1, ("GSS Update failed: %s\n", gssapi_error_string(out_mem_ctx, maj_stat, min_stat))); return nt_status; } } static NTSTATUS gensec_gssapi_wrap(struct gensec_security *gensec_security, TALLOC_CTX *mem_ctx, const DATA_BLOB *in, DATA_BLOB *out) { struct gensec_gssapi_state *gensec_gssapi_state = gensec_security->private_data; OM_uint32 maj_stat, min_stat; gss_buffer_desc input_token, output_token; int conf_state; input_token.length = in->length; input_token.value = in->data; maj_stat = gss_wrap(&min_stat, gensec_gssapi_state->gssapi_context, gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL), GSS_C_QOP_DEFAULT, &input_token, &conf_state, &output_token); if (GSS_ERROR(maj_stat)) { DEBUG(1, ("GSS Wrap failed: %s\n", gssapi_error_string(mem_ctx, maj_stat, min_stat))); return NT_STATUS_ACCESS_DENIED; } *out = data_blob_talloc(mem_ctx, output_token.value, output_token.length); gss_release_buffer(&min_stat, &output_token); if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL) && !conf_state) { return NT_STATUS_ACCESS_DENIED; } return NT_STATUS_OK; } static NTSTATUS gensec_gssapi_unwrap(struct gensec_security *gensec_security, TALLOC_CTX *mem_ctx, const DATA_BLOB *in, DATA_BLOB *out) { struct gensec_gssapi_state *gensec_gssapi_state = gensec_security->private_data; OM_uint32 maj_stat, min_stat; gss_buffer_desc input_token, output_token; int conf_state; gss_qop_t qop_state; input_token.length = in->length; input_token.value = in->data; maj_stat = gss_unwrap(&min_stat, gensec_gssapi_state->gssapi_context, &input_token, &output_token, &conf_state, &qop_state); if (GSS_ERROR(maj_stat)) { DEBUG(1, ("GSS UnWrap failed: %s\n", gssapi_error_string(mem_ctx, maj_stat, min_stat))); return NT_STATUS_ACCESS_DENIED; } *out = data_blob_talloc(mem_ctx, output_token.value, output_token.length); gss_release_buffer(&min_stat, &output_token); if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL) && !conf_state) { return NT_STATUS_ACCESS_DENIED; } return NT_STATUS_OK; } static size_t gensec_gssapi_sig_size(struct gensec_security *gensec_security) { /* not const but work for DCERPC packets and arcfour */ return 45; } static NTSTATUS gensec_gssapi_seal_packet(struct gensec_security *gensec_security, TALLOC_CTX *mem_ctx, uint8_t *data, size_t length, const uint8_t *whole_pdu, size_t pdu_length, DATA_BLOB *sig) { struct gensec_gssapi_state *gensec_gssapi_state = gensec_security->private_data; OM_uint32 maj_stat, min_stat; gss_buffer_desc input_token, output_token; int conf_state; ssize_t sig_length = 0; input_token.length = length; input_token.value = data; maj_stat = gss_wrap(&min_stat, gensec_gssapi_state->gssapi_context, gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL), GSS_C_QOP_DEFAULT, &input_token, &conf_state, &output_token); if (GSS_ERROR(maj_stat)) { DEBUG(1, ("GSS Wrap failed: %s\n", gssapi_error_string(mem_ctx, maj_stat, min_stat))); return NT_STATUS_ACCESS_DENIED; } if (output_token.length < length) { return NT_STATUS_INTERNAL_ERROR; } sig_length = 45; memcpy(data, ((uint8_t *)output_token.value) + sig_length, length); *sig = data_blob_talloc(mem_ctx, (uint8_t *)output_token.value, sig_length); dump_data_pw("gensec_gssapi_seal_packet: sig\n", sig->data, sig->length); dump_data_pw("gensec_gssapi_seal_packet: clear\n", data, length); dump_data_pw("gensec_gssapi_seal_packet: sealed\n", ((uint8_t *)output_token.value) + sig_length, output_token.length - sig_length); gss_release_buffer(&min_stat, &output_token); if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL) && !conf_state) { return NT_STATUS_ACCESS_DENIED; } return NT_STATUS_OK; } static NTSTATUS gensec_gssapi_unseal_packet(struct gensec_security *gensec_security, TALLOC_CTX *mem_ctx, uint8_t *data, size_t length, const uint8_t *whole_pdu, size_t pdu_length, const DATA_BLOB *sig) { struct gensec_gssapi_state *gensec_gssapi_state = gensec_security->private_data; OM_uint32 maj_stat, min_stat; gss_buffer_desc input_token, output_token; int conf_state; gss_qop_t qop_state; DATA_BLOB in; dump_data_pw("gensec_gssapi_seal_packet: sig\n", sig->data, sig->length); in = data_blob_talloc(mem_ctx, NULL, sig->length + length); memcpy(in.data, sig->data, sig->length); memcpy(in.data + sig->length, data, length); input_token.length = in.length; input_token.value = in.data; maj_stat = gss_unwrap(&min_stat, gensec_gssapi_state->gssapi_context, &input_token, &output_token, &conf_state, &qop_state); if (GSS_ERROR(maj_stat)) { DEBUG(1, ("GSS UnWrap failed: %s\n", gssapi_error_string(mem_ctx, maj_stat, min_stat))); return NT_STATUS_ACCESS_DENIED; } if (output_token.length != length) { return NT_STATUS_INTERNAL_ERROR; } memcpy(data, output_token.value, length); gss_release_buffer(&min_stat, &output_token); if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL) && !conf_state) { return NT_STATUS_ACCESS_DENIED; } return NT_STATUS_OK; } static NTSTATUS gensec_gssapi_sign_packet(struct gensec_security *gensec_security, TALLOC_CTX *mem_ctx, const uint8_t *data, size_t length, const uint8_t *whole_pdu, size_t pdu_length, DATA_BLOB *sig) { struct gensec_gssapi_state *gensec_gssapi_state = gensec_security->private_data; OM_uint32 maj_stat, min_stat; gss_buffer_desc input_token, output_token; int conf_state; ssize_t sig_length = 0; input_token.length = length; input_token.value = discard_const_p(uint8_t *, data); maj_stat = gss_wrap(&min_stat, gensec_gssapi_state->gssapi_context, 0, GSS_C_QOP_DEFAULT, &input_token, &conf_state, &output_token); if (GSS_ERROR(maj_stat)) { DEBUG(1, ("GSS Wrap failed: %s\n", gssapi_error_string(mem_ctx, maj_stat, min_stat))); return NT_STATUS_ACCESS_DENIED; } if (output_token.length < length) { return NT_STATUS_INTERNAL_ERROR; } sig_length = 45; /*memcpy(data, ((uint8_t *)output_token.value) + sig_length, length);*/ *sig = data_blob_talloc(mem_ctx, (uint8_t *)output_token.value, sig_length); dump_data_pw("gensec_gssapi_seal_packet: sig\n", sig->data, sig->length); gss_release_buffer(&min_stat, &output_token); return NT_STATUS_OK; } static NTSTATUS gensec_gssapi_check_packet(struct gensec_security *gensec_security, TALLOC_CTX *mem_ctx, const uint8_t *data, size_t length, const uint8_t *whole_pdu, size_t pdu_length, const DATA_BLOB *sig) { struct gensec_gssapi_state *gensec_gssapi_state = gensec_security->private_data; OM_uint32 maj_stat, min_stat; gss_buffer_desc input_token, output_token; int conf_state; gss_qop_t qop_state; DATA_BLOB in; dump_data_pw("gensec_gssapi_seal_packet: sig\n", sig->data, sig->length); in = data_blob_talloc(mem_ctx, NULL, sig->length + length); memcpy(in.data, sig->data, sig->length); memcpy(in.data + sig->length, data, length); input_token.length = in.length; input_token.value = in.data; maj_stat = gss_unwrap(&min_stat, gensec_gssapi_state->gssapi_context, &input_token, &output_token, &conf_state, &qop_state); if (GSS_ERROR(maj_stat)) { DEBUG(1, ("GSS UnWrap failed: %s\n", gssapi_error_string(mem_ctx, maj_stat, min_stat))); return NT_STATUS_ACCESS_DENIED; } if (output_token.length != length) { return NT_STATUS_INTERNAL_ERROR; } gss_release_buffer(&min_stat, &output_token); return NT_STATUS_OK; } static BOOL gensec_gssapi_have_feature(struct gensec_security *gensec_security, uint32_t feature) { struct gensec_gssapi_state *gensec_gssapi_state = gensec_security->private_data; if (feature & GENSEC_FEATURE_SIGN) { return gensec_gssapi_state->got_flags & GSS_C_INTEG_FLAG; } if (feature & GENSEC_FEATURE_SEAL) { return gensec_gssapi_state->got_flags & GSS_C_CONF_FLAG; } if (feature & GENSEC_FEATURE_SESSION_KEY) { #ifdef HAVE_GSSKRB5_GET_INITIATOR_SUBKEY if ((gensec_gssapi_state->gss_oid->length == gss_mech_krb5->length) && (memcmp(gensec_gssapi_state->gss_oid->elements, gss_mech_krb5->elements, gensec_gssapi_state->gss_oid->length) == 0)) { return True; } #endif } return False; } static NTSTATUS gensec_gssapi_session_key(struct gensec_security *gensec_security, DATA_BLOB *session_key) { struct gensec_gssapi_state *gensec_gssapi_state = gensec_security->private_data; if (gensec_gssapi_state->session_key.data) { *session_key = gensec_gssapi_state->session_key; return NT_STATUS_OK; } #ifdef HAVE_GSSKRB5_GET_INITIATOR_SUBKEY /* Ensure we only call this for GSSAPI/krb5, otherwise things could get very ugly */ if ((gensec_gssapi_state->gss_oid->length == gss_mech_krb5->length) && (memcmp(gensec_gssapi_state->gss_oid->elements, gss_mech_krb5->elements, gensec_gssapi_state->gss_oid->length) == 0)) { OM_uint32 maj_stat, min_stat; gss_buffer_desc skey; maj_stat = gsskrb5_get_initiator_subkey(&min_stat, gensec_gssapi_state->gssapi_context, &skey); if (maj_stat == 0) { DEBUG(10, ("Got KRB5 session key of length %d\n", skey.length)); gensec_gssapi_state->session_key = data_blob_talloc(gensec_gssapi_state, skey.value, skey.length); *session_key = gensec_gssapi_state->session_key; dump_data_pw("KRB5 Session Key:\n", session_key->data, session_key->length); gss_release_buffer(&min_stat, &skey); return NT_STATUS_OK; } return NT_STATUS_NO_USER_SESSION_KEY; } #endif DEBUG(1, ("NO session key for this mech\n")); return NT_STATUS_NO_USER_SESSION_KEY; } static NTSTATUS gensec_gssapi_session_info(struct gensec_security *gensec_security, struct auth_session_info **_session_info) { NTSTATUS nt_status; struct gensec_gssapi_state *gensec_gssapi_state = gensec_security->private_data; struct auth_serversupplied_info *server_info = NULL; struct auth_session_info *session_info = NULL; char *p; char *principal; const char *account_name; const char *realm; OM_uint32 maj_stat, min_stat; gss_buffer_desc name_token; maj_stat = gss_display_name (&min_stat, gensec_gssapi_state->client_name, &name_token, NULL); if (maj_stat) { return NT_STATUS_FOOBAR; } principal = talloc_strndup(gensec_gssapi_state, name_token.value, name_token.length); gss_release_buffer(&min_stat, &name_token); NT_STATUS_HAVE_NO_MEMORY(principal); p = strchr(principal, '@'); if (p) { *p = '\0'; p++; realm = p; } else { realm = lp_realm(); } account_name = principal; /* IF we have the PAC - otherwise we need to get this * data from elsewere - local ldb, or (TODO) lookup of some * kind... * * when heimdal can generate the PAC, we should fail if there's * no PAC present */ { DATA_BLOB user_sess_key = data_blob(NULL, 0); DATA_BLOB lm_sess_key = data_blob(NULL, 0); /* TODO: should we pass the krb5 session key in here? */ nt_status = sam_get_server_info(gensec_gssapi_state, account_name, realm, user_sess_key, lm_sess_key, &server_info); talloc_free(principal); NT_STATUS_NOT_OK_RETURN(nt_status); } /* references the server_info into the session_info */ nt_status = auth_generate_session_info(gensec_gssapi_state, server_info, &session_info); talloc_free(server_info); NT_STATUS_NOT_OK_RETURN(nt_status); nt_status = gensec_gssapi_session_key(gensec_security, &session_info->session_key); NT_STATUS_NOT_OK_RETURN(nt_status); *_session_info = session_info; return NT_STATUS_OK; } static const char *gensec_krb5_oids[] = { GENSEC_OID_KERBEROS5, GENSEC_OID_KERBEROS5_OLD, NULL }; /* As a server, this could in theory accept any GSSAPI mech */ static const struct gensec_security_ops gensec_gssapi_krb5_security_ops = { .name = "gssapi_krb5", .oid = gensec_krb5_oids, .client_start = gensec_gssapi_client_start, .server_start = gensec_gssapi_server_start, .update = gensec_gssapi_update, .session_key = gensec_gssapi_session_key, .session_info = gensec_gssapi_session_info, .sig_size = gensec_gssapi_sig_size, .sign_packet = gensec_gssapi_sign_packet, .check_packet = gensec_gssapi_check_packet, .seal_packet = gensec_gssapi_seal_packet, .unseal_packet = gensec_gssapi_unseal_packet, .wrap = gensec_gssapi_wrap, .unwrap = gensec_gssapi_unwrap, .have_feature = gensec_gssapi_have_feature, .enabled = False }; NTSTATUS gensec_gssapi_init(void) { NTSTATUS ret; ret = gensec_register(&gensec_gssapi_krb5_security_ops); if (!NT_STATUS_IS_OK(ret)) { DEBUG(0,("Failed to register '%s' gensec backend!\n", gensec_gssapi_krb5_security_ops.name)); return ret; } return ret; }