diff options
| -rw-r--r-- | source4/auth/gensec/gensec.mk | 10 | ||||
| -rw-r--r-- | source4/auth/gensec/gensec_gsskrb5.c | 584 |
2 files changed, 0 insertions, 594 deletions
diff --git a/source4/auth/gensec/gensec.mk b/source4/auth/gensec/gensec.mk index 2c4ce8b7fd..f8d1928585 100644 --- a/source4/auth/gensec/gensec.mk +++ b/source4/auth/gensec/gensec.mk @@ -30,16 +30,6 @@ REQUIRED_SUBSYSTEMS = EXT_LIB_KRB5 AUTH ################################################ ################################################ -# Start MODULE gensec_gsskrb5 -[MODULE::gensec_gsskrb5] -SUBSYSTEM = GENSEC -INIT_FUNCTION = gensec_gsskrb5_init -INIT_OBJ_FILES = auth/gensec/gensec_gsskrb5.o -REQUIRED_SUBSYSTEMS = EXT_LIB_KRB5 -# End MODULE gensec_gsskrb5 -################################################ - -################################################ # Start MODULE gensec_spnego [MODULE::gensec_spnego] SUBSYSTEM = GENSEC diff --git a/source4/auth/gensec/gensec_gsskrb5.c b/source4/auth/gensec/gensec_gsskrb5.c deleted file mode 100644 index 89f7f9e36a..0000000000 --- a/source4/auth/gensec/gensec_gsskrb5.c +++ /dev/null @@ -1,584 +0,0 @@ -/* - Unix SMB/CIFS implementation. - - GSSAPI KRB5 backend for GENSEC - - Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004 - Copyright (C) Stefan Metzmacher <metze@samba.org> 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/time.h" -#include "auth/kerberos/kerberos.h" -#include "auth/auth.h" - -static const gss_OID_desc gensec_gss_krb5_mechanism_oid_desc = - {9, (void *)discard_const_p(char, "\x2a\x86\x48\x86\xf7\x12\x01\x02\x02")}; - -enum GENSEC_GSSKRB5_STATE { - GENSEC_GSSKRB5_CLIENT_START, - GENSEC_GSSKRB5_CLIENT_MUTUAL_AUTH, - GENSEC_GSSKRB5_CLIENT_DCE_STYLE, - GENSEC_GSSKRB5_DONE -}; - -struct gensec_gsskrb5_state { - enum GENSEC_GSSKRB5_STATE state_position; - 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; -}; - -static int gensec_gsskrb5_destory(void *ptr) -{ - struct gensec_gsskrb5_state *gensec_gsskrb5_state = ptr; - OM_uint32 maj_stat, min_stat; - - if (gensec_gsskrb5_state->gssapi_context != GSS_C_NO_CONTEXT) { - maj_stat = gss_delete_sec_context (&min_stat, - &gensec_gsskrb5_state->gssapi_context, - GSS_C_NO_BUFFER); - } - - if (gensec_gsskrb5_state->server_name != GSS_C_NO_NAME) { - maj_stat = gss_release_name(&min_stat, &gensec_gsskrb5_state->server_name); - } - if (gensec_gsskrb5_state->client_name != GSS_C_NO_NAME) { - maj_stat = gss_release_name(&min_stat, &gensec_gsskrb5_state->client_name); - } - return 0; -} - -static NTSTATUS gensec_gsskrb5_start(struct gensec_security *gensec_security) -{ - struct gensec_gsskrb5_state *gensec_gsskrb5_state; - - gensec_gsskrb5_state = talloc(gensec_security, struct gensec_gsskrb5_state); - if (!gensec_gsskrb5_state) { - return NT_STATUS_NO_MEMORY; - } - - gensec_security->private_data = gensec_gsskrb5_state; - - gensec_gsskrb5_state->gssapi_context = GSS_C_NO_CONTEXT; - gensec_gsskrb5_state->server_name = GSS_C_NO_NAME; - gensec_gsskrb5_state->client_name = GSS_C_NO_NAME; - - talloc_set_destructor(gensec_gsskrb5_state, gensec_gsskrb5_destory); - - /* TODO: Fill in channel bindings */ - gensec_gsskrb5_state->input_chan_bindings = GSS_C_NO_CHANNEL_BINDINGS; - - gensec_gsskrb5_state->want_flags = GSS_C_MUTUAL_FLAG; - gensec_gsskrb5_state->got_flags = 0; - - if (gensec_security->want_features & GENSEC_FEATURE_SESSION_KEY) { - /* GSSAPI won't give us the session keys */ - return NT_STATUS_INVALID_PARAMETER; - } - if (gensec_security->want_features & GENSEC_FEATURE_SIGN) { - gensec_gsskrb5_state->want_flags |= GSS_C_INTEG_FLAG; - } - if (gensec_security->want_features & GENSEC_FEATURE_SEAL) { - gensec_gsskrb5_state->want_flags |= GSS_C_CONF_FLAG; - } - if (gensec_security->want_features & GENSEC_FEATURE_DCE_STYLE) { - gensec_gsskrb5_state->want_flags |= GSS_C_DCE_STYLE; - } - - return NT_STATUS_OK; -} - -static NTSTATUS gensec_gsskrb5_client_start(struct gensec_security *gensec_security) -{ - struct gensec_gsskrb5_state *gensec_gsskrb5_state; - NTSTATUS nt_status; - gss_buffer_desc name_token; - OM_uint32 maj_stat, min_stat; - - gss_OID_desc hostbased = {10, - (void *)discard_const_p(char, "\x2a\x86\x48\x86\xf7\x12" - "\x01\x02\x01\x04")}; - - nt_status = gensec_gsskrb5_start(gensec_security); - if (!NT_STATUS_IS_OK(nt_status)) { - return nt_status; - } - - gensec_gsskrb5_state = gensec_security->private_data; - - gensec_gsskrb5_state->state_position = GENSEC_GSSKRB5_CLIENT_START; - - name_token.value = talloc_asprintf(gensec_gsskrb5_state, "%s@%s", gensec_get_target_service(gensec_security), - gensec_get_target_hostname(gensec_security)); - DEBUG(0, ("name: %s\n", (char *)name_token.value)); - name_token.length = strlen(name_token.value); - - maj_stat = gss_import_name (&min_stat, - &name_token, - &hostbased, - &gensec_gsskrb5_state->server_name); - if (maj_stat) { - return NT_STATUS_UNSUCCESSFUL; - } - - return NT_STATUS_OK; -} - -/** - * Next state function for the GSSKRB5 GENSEC mechanism - * - * @param gensec_gsskrb5_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_gsskrb5_update(struct gensec_security *gensec_security, - TALLOC_CTX *out_mem_ctx, - const DATA_BLOB in, DATA_BLOB *out) -{ - struct gensec_gsskrb5_state *gensec_gsskrb5_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; - - *out = data_blob(NULL, 0); - - input_token.length = in.length; - input_token.value = in.data; - - switch (gensec_gsskrb5_state->state_position) { - case GENSEC_GSSKRB5_CLIENT_START: - { - maj_stat = gss_init_sec_context(&min_stat, - GSS_C_NO_CREDENTIAL, - &gensec_gsskrb5_state->gssapi_context, - gensec_gsskrb5_state->server_name, - discard_const_p(gss_OID_desc, &gensec_gss_krb5_mechanism_oid_desc), - gensec_gsskrb5_state->want_flags, - 0, - gensec_gsskrb5_state->input_chan_bindings, - &input_token, - NULL, - &output_token, - &gensec_gsskrb5_state->got_flags, /* ret flags */ - NULL); - *out = data_blob_talloc(out_mem_ctx, output_token.value, output_token.length); - if (out->length != output_token.length) { - gss_release_buffer(&min_stat2, &output_token); - return NT_STATUS_NO_MEMORY; - } - gss_release_buffer(&min_stat2, &output_token); - - if (maj_stat == GSS_S_COMPLETE) { - gensec_gsskrb5_state->state_position = GENSEC_GSSKRB5_DONE; - return NT_STATUS_OK; - } else if (maj_stat == GSS_S_CONTINUE_NEEDED) { - gensec_gsskrb5_state->state_position = GENSEC_GSSKRB5_CLIENT_MUTUAL_AUTH; - return NT_STATUS_MORE_PROCESSING_REQUIRED; - } else { - gss_buffer_desc msg1, msg2; - OM_uint32 msg_ctx = 0; - - msg1.value = NULL; - msg2.value = NULL; - gss_display_status(&min_stat2, maj_stat, GSS_C_GSS_CODE, - GSS_C_NULL_OID, &msg_ctx, &msg1); - gss_display_status(&min_stat2, min_stat, GSS_C_MECH_CODE, - GSS_C_NULL_OID, &msg_ctx, &msg2); - DEBUG(1, ("gensec_gsskrb5_update: %s : %s\n", (char *)msg1.value, (char *)msg2.value)); - gss_release_buffer(&min_stat2, &msg1); - gss_release_buffer(&min_stat2, &msg2); - - return nt_status; - } - break; - } - case GENSEC_GSSKRB5_CLIENT_MUTUAL_AUTH: - { - maj_stat = gss_init_sec_context(&min_stat, - GSS_C_NO_CREDENTIAL, - &gensec_gsskrb5_state->gssapi_context, - gensec_gsskrb5_state->server_name, - discard_const_p(gss_OID_desc, &gensec_gss_krb5_mechanism_oid_desc), - gensec_gsskrb5_state->want_flags, - 0, - gensec_gsskrb5_state->input_chan_bindings, - &input_token, - NULL, - &output_token, - &gensec_gsskrb5_state->got_flags, /* ret flags */ - NULL); - *out = data_blob_talloc(out_mem_ctx, output_token.value, output_token.length); - if (out->length != output_token.length) { - gss_release_buffer(&min_stat2, &output_token); - return NT_STATUS_NO_MEMORY; - } - gss_release_buffer(&min_stat2, &output_token); - - if (maj_stat == GSS_S_COMPLETE) { - if (gensec_gsskrb5_state->got_flags & GSS_C_DCE_STYLE) { - gensec_gsskrb5_state->state_position = GENSEC_GSSKRB5_CLIENT_DCE_STYLE; - return NT_STATUS_MORE_PROCESSING_REQUIRED; - } - gensec_gsskrb5_state->state_position = GENSEC_GSSKRB5_DONE; - return NT_STATUS_OK; - } else if (maj_stat == GSS_S_CONTINUE_NEEDED) { - gensec_gsskrb5_state->state_position = GENSEC_GSSKRB5_CLIENT_DCE_STYLE; - return NT_STATUS_MORE_PROCESSING_REQUIRED; - } else { - gss_buffer_desc msg1, msg2; - OM_uint32 msg_ctx = 0; - - msg1.value = NULL; - msg2.value = NULL; - gss_display_status(&min_stat2, maj_stat, GSS_C_GSS_CODE, - GSS_C_NULL_OID, &msg_ctx, &msg1); - gss_display_status(&min_stat2, min_stat, GSS_C_MECH_CODE, - GSS_C_NULL_OID, &msg_ctx, &msg2); - DEBUG(1, ("gensec_gsskrb5_update: %s : %s\n", (char *)msg1.value, (char *)msg2.value)); - gss_release_buffer(&min_stat2, &msg1); - gss_release_buffer(&min_stat2, &msg2); - - return nt_status; - } - break; - } - case GENSEC_GSSKRB5_CLIENT_DCE_STYLE: - { - gensec_gsskrb5_state->state_position = GENSEC_GSSKRB5_DONE; - return NT_STATUS_OK; - } - case GENSEC_GSSKRB5_DONE: - { - return NT_STATUS_OK; - } - default: - return NT_STATUS_INVALID_PARAMETER; - } - - return NT_STATUS_INVALID_PARAMETER; -} - -static NTSTATUS gensec_gsskrb5_wrap(struct gensec_security *gensec_security, - TALLOC_CTX *mem_ctx, - const DATA_BLOB *in, - DATA_BLOB *out) -{ - struct gensec_gsskrb5_state *gensec_gsskrb5_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_gsskrb5_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)) { - 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_gsskrb5_unwrap(struct gensec_security *gensec_security, - TALLOC_CTX *mem_ctx, - const DATA_BLOB *in, - DATA_BLOB *out) -{ - struct gensec_gsskrb5_state *gensec_gsskrb5_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_gsskrb5_state->gssapi_context, - &input_token, - &output_token, - &conf_state, - &qop_state); - if (GSS_ERROR(maj_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_gsskrb5_sig_size(struct gensec_security *gensec_security) -{ - /* not const but work for DCERPC packets and arcfour */ - return 45; -} - -static NTSTATUS gensec_gsskrb5_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_gsskrb5_state *gensec_gsskrb5_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_gsskrb5_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)) { - 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); - -DEBUG(0,("gensec_gsskrb5_seal_packet: siglen: %d inlen: %d, wrap_len: %d\n", sig->length, length, output_token.length - sig_length)); -dump_data(0,sig->data, sig->length); -dump_data(0,data, length); -dump_data(0,((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_gsskrb5_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_gsskrb5_state *gensec_gsskrb5_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; - -DEBUG(0,("gensec_gsskrb5_unseal_packet: siglen: %d\n", sig->length)); -dump_data(0,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_gsskrb5_state->gssapi_context, - &input_token, - &output_token, - &conf_state, - &qop_state); - if (GSS_ERROR(maj_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_gsskrb5_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_gsskrb5_state *gensec_gsskrb5_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_gsskrb5_state->gssapi_context, - 0, - GSS_C_QOP_DEFAULT, - &input_token, - &conf_state, - &output_token); - if (GSS_ERROR(maj_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); - -DEBUG(0,("gensec_gsskrb5_sign_packet: siglen: %d\n", sig->length)); -dump_data(0,sig->data, sig->length); - - gss_release_buffer(&min_stat, &output_token); - - return NT_STATUS_OK; -} - -static NTSTATUS gensec_gsskrb5_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_gsskrb5_state *gensec_gsskrb5_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; - -DEBUG(0,("gensec_gsskrb5_check_packet: siglen: %d\n", sig->length)); -dump_data(0,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_gsskrb5_state->gssapi_context, - &input_token, - &output_token, - &conf_state, - &qop_state); - if (GSS_ERROR(maj_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); - - return NT_STATUS_OK; -} - -static BOOL gensec_gsskrb5_have_feature(struct gensec_security *gensec_security, - uint32_t feature) -{ - struct gensec_gsskrb5_state *gensec_gsskrb5_state = gensec_security->private_data; - if (feature & GENSEC_FEATURE_SIGN) { - return gensec_gsskrb5_state->got_flags & GSS_C_INTEG_FLAG; - } - if (feature & GENSEC_FEATURE_SEAL) { - return gensec_gsskrb5_state->got_flags & GSS_C_CONF_FLAG; - } - return False; -} - -static const struct gensec_security_ops gensec_gsskrb5_security_ops = { - .name = "gsskrb5", - .auth_type = DCERPC_AUTH_TYPE_KRB5, - .oid = GENSEC_OID_KERBEROS5, - .client_start = gensec_gsskrb5_client_start, - .update = gensec_gsskrb5_update, - .sig_size = gensec_gsskrb5_sig_size, - .sign_packet = gensec_gsskrb5_sign_packet, - .check_packet = gensec_gsskrb5_check_packet, - .seal_packet = gensec_gsskrb5_seal_packet, - .unseal_packet = gensec_gsskrb5_unseal_packet, - .wrap = gensec_gsskrb5_wrap, - .unwrap = gensec_gsskrb5_unwrap, - .have_feature = gensec_gsskrb5_have_feature, - .enabled = False -}; - -NTSTATUS gensec_gsskrb5_init(void) -{ - NTSTATUS ret; - - ret = gensec_register(&gensec_gsskrb5_security_ops); - if (!NT_STATUS_IS_OK(ret)) { - DEBUG(0,("Failed to register '%s' gensec backend!\n", - gensec_gsskrb5_security_ops.name)); - return ret; - } - - return ret; -} |