Copyright (C) Andrew Tridgell 2001
Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2002
Copyright (C) Luke Howard 2003
-
+ Copyright (C) Jeremy Allison 2010
+
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 3 of the License, or
*/
#include "includes.h"
+#include "../libcli/auth/spnego.h"
+#include "smb_krb5.h"
+#include "../lib/util/asn1.h"
/*
- generate a negTokenInit packet given a GUID, a list of supported
+ parse a negTokenInit packet giving a GUID, a list of supported
OIDs (the mechanisms) and a principal name string
*/
-DATA_BLOB spnego_gen_negTokenInit(char guid[16],
- const char *OIDs[],
- const char *principal)
+bool spnego_parse_negTokenInit(TALLOC_CTX *ctx,
+ DATA_BLOB blob,
+ char *OIDs[ASN1_MAX_OIDS],
+ char **principal,
+ DATA_BLOB *secblob)
{
int i;
+ bool ret = false;
ASN1_DATA *data;
- DATA_BLOB ret;
- data = asn1_init(talloc_tos());
- if (data == NULL) {
- return data_blob_null;
+ for (i = 0; i < ASN1_MAX_OIDS; i++) {
+ OIDs[i] = NULL;
}
- asn1_write(data, guid, 16);
- asn1_push_tag(data,ASN1_APPLICATION(0));
- asn1_write_OID(data,OID_SPNEGO);
- asn1_push_tag(data,ASN1_CONTEXT(0));
- asn1_push_tag(data,ASN1_SEQUENCE(0));
-
- asn1_push_tag(data,ASN1_CONTEXT(0));
- asn1_push_tag(data,ASN1_SEQUENCE(0));
- for (i=0; OIDs[i]; i++) {
- asn1_write_OID(data,OIDs[i]);
+ if (principal) {
+ *principal = NULL;
}
- asn1_pop_tag(data);
- asn1_pop_tag(data);
-
- asn1_push_tag(data, ASN1_CONTEXT(3));
- asn1_push_tag(data, ASN1_SEQUENCE(0));
- asn1_push_tag(data, ASN1_CONTEXT(0));
- asn1_write_GeneralString(data,principal);
- asn1_pop_tag(data);
- asn1_pop_tag(data);
- asn1_pop_tag(data);
-
- asn1_pop_tag(data);
- asn1_pop_tag(data);
-
- asn1_pop_tag(data);
-
- if (data->has_error) {
- DEBUG(1,("Failed to build negTokenInit at offset %d\n", (int)data->ofs));
+ if (secblob) {
+ *secblob = data_blob_null;
}
- ret = data_blob(data->data, data->length);
- asn1_free(data);
-
- return ret;
-}
-
-/*
- Generate a negTokenInit as used by the client side ... It has a mechType
- (OID), and a mechToken (a security blob) ...
-
- Really, we need to break out the NTLMSSP stuff as well, because it could be
- raw in the packets!
-*/
-DATA_BLOB gen_negTokenInit(const char *OID, DATA_BLOB blob)
-{
- ASN1_DATA *data;
- DATA_BLOB ret;
-
data = asn1_init(talloc_tos());
if (data == NULL) {
- return data_blob_null;
- }
-
- asn1_push_tag(data, ASN1_APPLICATION(0));
- asn1_write_OID(data,OID_SPNEGO);
- asn1_push_tag(data, ASN1_CONTEXT(0));
- asn1_push_tag(data, ASN1_SEQUENCE(0));
-
- asn1_push_tag(data, ASN1_CONTEXT(0));
- asn1_push_tag(data, ASN1_SEQUENCE(0));
- asn1_write_OID(data, OID);
- asn1_pop_tag(data);
- asn1_pop_tag(data);
-
- asn1_push_tag(data, ASN1_CONTEXT(2));
- asn1_write_OctetString(data,blob.data,blob.length);
- asn1_pop_tag(data);
-
- asn1_pop_tag(data);
- asn1_pop_tag(data);
-
- asn1_pop_tag(data);
-
- if (data->has_error) {
- DEBUG(1,("Failed to build negTokenInit at offset %d\n", (int)data->ofs));
+ return false;
}
- ret = data_blob(data->data, data->length);
- asn1_free(data);
+ if (!asn1_load(data, blob)) goto err;
- return ret;
-}
+ if (!asn1_start_tag(data,ASN1_APPLICATION(0))) goto err;
-/*
- parse a negTokenInit packet giving a GUID, a list of supported
- OIDs (the mechanisms) and a principal name string
-*/
-bool spnego_parse_negTokenInit(DATA_BLOB blob,
- char *OIDs[ASN1_MAX_OIDS],
- char **principal)
-{
- int i;
- bool ret;
- ASN1_DATA *data;
-
- data = asn1_init(talloc_tos());
- if (data == NULL) {
- return false;
- }
+ if (!asn1_check_OID(data,OID_SPNEGO)) goto err;
- asn1_load(data, blob);
+ /* negTokenInit [0] NegTokenInit */
+ if (!asn1_start_tag(data,ASN1_CONTEXT(0))) goto err;
+ if (!asn1_start_tag(data,ASN1_SEQUENCE(0))) goto err;
- asn1_start_tag(data,ASN1_APPLICATION(0));
+ /* mechTypes [0] MechTypeList OPTIONAL */
- asn1_check_OID(data,OID_SPNEGO);
- asn1_start_tag(data,ASN1_CONTEXT(0));
- asn1_start_tag(data,ASN1_SEQUENCE(0));
+ /* Not really optional, we depend on this to decide
+ * what mechanisms we have to work with. */
- asn1_start_tag(data,ASN1_CONTEXT(0));
- asn1_start_tag(data,ASN1_SEQUENCE(0));
+ if (!asn1_start_tag(data,ASN1_CONTEXT(0))) goto err;
+ if (!asn1_start_tag(data,ASN1_SEQUENCE(0))) goto err;
for (i=0; asn1_tag_remaining(data) > 0 && i < ASN1_MAX_OIDS-1; i++) {
- const char *oid_str = NULL;
- asn1_read_OID(data,talloc_autofree_context(),&oid_str);
- OIDs[i] = CONST_DISCARD(char *, oid_str);
+ if (!asn1_read_OID(data,ctx, &OIDs[i])) {
+ goto err;
+ }
+ if (asn1_has_error(data)) {
+ goto err;
+ }
}
OIDs[i] = NULL;
- asn1_end_tag(data);
- asn1_end_tag(data);
-
- *principal = NULL;
- if (asn1_tag_remaining(data) > 0) {
- asn1_start_tag(data, ASN1_CONTEXT(3));
- asn1_start_tag(data, ASN1_SEQUENCE(0));
- asn1_start_tag(data, ASN1_CONTEXT(0));
- asn1_read_GeneralString(data,talloc_autofree_context(),principal);
- asn1_end_tag(data);
- asn1_end_tag(data);
- asn1_end_tag(data);
- }
+ if (!asn1_end_tag(data)) goto err;
+ if (!asn1_end_tag(data)) goto err;
- asn1_end_tag(data);
- asn1_end_tag(data);
+ /*
+ Win7 + Live Sign-in Assistant attaches a mechToken
+ ASN1_CONTEXT(2) to the negTokenInit packet
+ which breaks our negotiation if we just assume
+ the next tag is ASN1_CONTEXT(3).
+ */
- asn1_end_tag(data);
+ if (asn1_peek_tag(data, ASN1_CONTEXT(1))) {
+ uint8_t flags;
- ret = !data->has_error;
- if (data->has_error) {
- int j;
- TALLOC_FREE(*principal);
- for(j = 0; j < i && j < ASN1_MAX_OIDS-1; j++) {
- TALLOC_FREE(OIDs[j]);
+ /* reqFlags [1] ContextFlags OPTIONAL */
+ if (!asn1_start_tag(data, ASN1_CONTEXT(1))) goto err;
+ if (!asn1_start_tag(data, ASN1_BIT_STRING)) goto err;
+ while (asn1_tag_remaining(data) > 0) {
+ if (!asn1_read_uint8(data, &flags)) goto err;
+ }
+ if (!asn1_end_tag(data)) goto err;
+ if (!asn1_end_tag(data)) goto err;
+ }
+
+ if (asn1_peek_tag(data, ASN1_CONTEXT(2))) {
+ DATA_BLOB sblob = data_blob_null;
+ /* mechToken [2] OCTET STRING OPTIONAL */
+ if (!asn1_start_tag(data, ASN1_CONTEXT(2))) goto err;
+ if (!asn1_read_OctetString(data, ctx, &sblob)) goto err;
+ if (!asn1_end_tag(data)) {
+ data_blob_free(&sblob);
+ goto err;
+ }
+ if (secblob) {
+ *secblob = sblob;
+ } else {
+ data_blob_free(&sblob);
}
}
- asn1_free(data);
- return ret;
-}
-
-/*
- generate a negTokenTarg packet given a list of OIDs and a security blob
-*/
-DATA_BLOB gen_negTokenTarg(const char *OIDs[], DATA_BLOB blob)
-{
- int i;
- ASN1_DATA *data;
- DATA_BLOB ret;
-
- data = asn1_init(talloc_tos());
- if (data == NULL) {
- return data_blob_null;
- }
-
- asn1_push_tag(data, ASN1_APPLICATION(0));
- asn1_write_OID(data,OID_SPNEGO);
- asn1_push_tag(data, ASN1_CONTEXT(0));
- asn1_push_tag(data, ASN1_SEQUENCE(0));
-
- asn1_push_tag(data, ASN1_CONTEXT(0));
- asn1_push_tag(data, ASN1_SEQUENCE(0));
- for (i=0; OIDs[i]; i++) {
- asn1_write_OID(data,OIDs[i]);
- }
- asn1_pop_tag(data);
- asn1_pop_tag(data);
-
- asn1_push_tag(data, ASN1_CONTEXT(2));
- asn1_write_OctetString(data,blob.data,blob.length);
- asn1_pop_tag(data);
-
- asn1_pop_tag(data);
- asn1_pop_tag(data);
-
- asn1_pop_tag(data);
-
- if (data->has_error) {
- DEBUG(1,("Failed to build negTokenTarg at offset %d\n", (int)data->ofs));
- }
-
- ret = data_blob(data->data, data->length);
- asn1_free(data);
-
- return ret;
-}
-
-/*
- parse a negTokenTarg packet giving a list of OIDs and a security blob
-*/
-bool parse_negTokenTarg(DATA_BLOB blob, char *OIDs[ASN1_MAX_OIDS], DATA_BLOB *secblob)
-{
- int i;
- ASN1_DATA *data;
-
- data = asn1_init(talloc_tos());
- if (data == NULL) {
- return false;
- }
-
- asn1_load(data, blob);
- asn1_start_tag(data, ASN1_APPLICATION(0));
- asn1_check_OID(data,OID_SPNEGO);
- asn1_start_tag(data, ASN1_CONTEXT(0));
- asn1_start_tag(data, ASN1_SEQUENCE(0));
-
- asn1_start_tag(data, ASN1_CONTEXT(0));
- asn1_start_tag(data, ASN1_SEQUENCE(0));
- for (i=0; asn1_tag_remaining(data) > 0 && i < ASN1_MAX_OIDS-1; i++) {
- const char *oid_str = NULL;
- asn1_read_OID(data,talloc_autofree_context(),&oid_str);
- OIDs[i] = CONST_DISCARD(char *, oid_str);
+ if (asn1_peek_tag(data, ASN1_CONTEXT(3))) {
+ char *princ = NULL;
+ /* mechListMIC [3] OCTET STRING OPTIONAL */
+ if (!asn1_start_tag(data, ASN1_CONTEXT(3))) goto err;
+ if (!asn1_start_tag(data, ASN1_SEQUENCE(0))) goto err;
+ if (!asn1_start_tag(data, ASN1_CONTEXT(0))) goto err;
+ if (!asn1_read_GeneralString(data, ctx, &princ)) goto err;
+ if (!asn1_end_tag(data)) goto err;
+ if (!asn1_end_tag(data)) goto err;
+ if (!asn1_end_tag(data)) goto err;
+ if (principal) {
+ *principal = princ;
+ } else {
+ TALLOC_FREE(princ);
+ }
}
- OIDs[i] = NULL;
- asn1_end_tag(data);
- asn1_end_tag(data);
- /* Skip any optional req_flags that are sent per RFC 4178 */
- if (asn1_peek_tag(data, ASN1_CONTEXT(1))) {
- uint8 flags;
-
- asn1_start_tag(data, ASN1_CONTEXT(1));
- asn1_start_tag(data, ASN1_BITFIELD);
- while (asn1_tag_remaining(data) > 0)
- asn1_read_uint8(data, &flags);
- asn1_end_tag(data);
- asn1_end_tag(data);
- }
+ if (!asn1_end_tag(data)) goto err;
+ if (!asn1_end_tag(data)) goto err;
- asn1_start_tag(data, ASN1_CONTEXT(2));
- asn1_read_OctetString(data,talloc_autofree_context(),secblob);
- asn1_end_tag(data);
+ if (!asn1_end_tag(data)) goto err;
- asn1_end_tag(data);
- asn1_end_tag(data);
+ ret = !asn1_has_error(data);
- asn1_end_tag(data);
+ err:
- if (data->has_error) {
+ if (asn1_has_error(data)) {
int j;
- data_blob_free(secblob);
+ if (principal) {
+ TALLOC_FREE(*principal);
+ }
+ if (secblob) {
+ data_blob_free(secblob);
+ }
for(j = 0; j < i && j < ASN1_MAX_OIDS-1; j++) {
TALLOC_FREE(OIDs[j]);
}
- DEBUG(1,("Failed to parse negTokenTarg at offset %d\n", (int)data->ofs));
- asn1_free(data);
- return False;
- }
-
- asn1_free(data);
- return True;
-}
-
-/*
- generate a krb5 GSS-API wrapper packet given a ticket
-*/
-DATA_BLOB spnego_gen_krb5_wrap(const DATA_BLOB ticket, const uint8 tok_id[2])
-{
- ASN1_DATA *data;
- DATA_BLOB ret;
-
- data = asn1_init(talloc_tos());
- if (data == NULL) {
- return data_blob_null;
- }
-
- asn1_push_tag(data, ASN1_APPLICATION(0));
- asn1_write_OID(data, OID_KERBEROS5);
-
- 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));
- }
-
- ret = data_blob(data->data, data->length);
- asn1_free(data);
-
- return ret;
-}
-
-/*
- parse a krb5 GSS-API wrapper packet giving a ticket
-*/
-bool spnego_parse_krb5_wrap(DATA_BLOB blob, DATA_BLOB *ticket, uint8 tok_id[2])
-{
- bool ret;
- ASN1_DATA *data;
- int data_remaining;
-
- data = asn1_init(talloc_tos());
- if (data == NULL) {
- return false;
- }
-
- asn1_load(data, blob);
- asn1_start_tag(data, ASN1_APPLICATION(0));
- asn1_check_OID(data, OID_KERBEROS5);
-
- data_remaining = asn1_tag_remaining(data);
-
- if (data_remaining < 3) {
- data->has_error = True;
- } else {
- asn1_read(data, tok_id, 2);
- data_remaining -= 2;
- *ticket = data_blob(NULL, data_remaining);
- asn1_read(data, ticket->data, ticket->length);
- }
-
- asn1_end_tag(data);
-
- ret = !data->has_error;
-
- if (data->has_error) {
- data_blob_free(ticket);
- }
-
- asn1_free(data);
-
- return ret;
-}
-
-
-/*
- generate a SPNEGO negTokenTarg packet, ready for a EXTENDED_SECURITY
- kerberos session setup
-*/
-int spnego_gen_negTokenTarg(const char *principal, int time_offset,
- DATA_BLOB *targ,
- DATA_BLOB *session_key_krb5, uint32 extra_ap_opts,
- time_t *expire_time)
-{
- int retval;
- DATA_BLOB tkt, tkt_wrapped;
- const char *krb_mechs[] = {OID_KERBEROS5_OLD, OID_KERBEROS5, OID_NTLMSSP, NULL};
-
- /* get a kerberos ticket for the service and extract the session key */
- retval = cli_krb5_get_ticket(principal, time_offset,
- &tkt, session_key_krb5, extra_ap_opts, NULL,
- expire_time);
-
- if (retval)
- return retval;
-
- /* wrap that up in a nice GSS-API wrapping */
- tkt_wrapped = spnego_gen_krb5_wrap(tkt, TOK_ID_KRB_AP_REQ);
-
- /* and wrap that in a shiny SPNEGO wrapper */
- *targ = gen_negTokenTarg(krb_mechs, tkt_wrapped);
-
- data_blob_free(&tkt_wrapped);
- data_blob_free(&tkt);
-
- return retval;
-}
-
-
-/*
- parse a spnego NTLMSSP challenge packet giving two security blobs
-*/
-bool spnego_parse_challenge(const DATA_BLOB blob,
- DATA_BLOB *chal1, DATA_BLOB *chal2)
-{
- bool ret;
- ASN1_DATA *data;
-
- ZERO_STRUCTP(chal1);
- ZERO_STRUCTP(chal2);
-
- data = asn1_init(talloc_tos());
- if (data == NULL) {
- return false;
- }
-
- asn1_load(data, blob);
- asn1_start_tag(data,ASN1_CONTEXT(1));
- asn1_start_tag(data,ASN1_SEQUENCE(0));
-
- asn1_start_tag(data,ASN1_CONTEXT(0));
- asn1_check_enumerated(data,1);
- asn1_end_tag(data);
-
- asn1_start_tag(data,ASN1_CONTEXT(1));
- asn1_check_OID(data, OID_NTLMSSP);
- asn1_end_tag(data);
-
- asn1_start_tag(data,ASN1_CONTEXT(2));
- asn1_read_OctetString(data, talloc_autofree_context(), chal1);
- asn1_end_tag(data);
-
- /* the second challenge is optional (XP doesn't send it) */
- if (asn1_tag_remaining(data)) {
- asn1_start_tag(data,ASN1_CONTEXT(3));
- asn1_read_OctetString(data, talloc_autofree_context(), chal2);
- asn1_end_tag(data);
- }
-
- asn1_end_tag(data);
- asn1_end_tag(data);
-
- ret = !data->has_error;
-
- if (data->has_error) {
- data_blob_free(chal1);
- data_blob_free(chal2);
}
asn1_free(data);
return ret;
}
-
/*
- generate a SPNEGO auth packet. This will contain the encrypted passwords
-*/
-DATA_BLOB spnego_gen_auth(DATA_BLOB blob)
-{
- ASN1_DATA *data;
- DATA_BLOB ret;
-
- data = asn1_init(talloc_tos());
- if (data == NULL) {
- return data_blob_null;
- }
-
- asn1_push_tag(data, ASN1_CONTEXT(1));
- asn1_push_tag(data, ASN1_SEQUENCE(0));
- asn1_push_tag(data, ASN1_CONTEXT(2));
- asn1_write_OctetString(data,blob.data,blob.length);
- asn1_pop_tag(data);
- asn1_pop_tag(data);
- asn1_pop_tag(data);
-
- ret = data_blob(data->data, data->length);
-
- asn1_free(data);
-
- return ret;
-}
-
-/*
- parse a SPNEGO auth packet. This contains the encrypted passwords
-*/
-bool spnego_parse_auth(DATA_BLOB blob, DATA_BLOB *auth)
-{
- ASN1_DATA *data;
-
- data = asn1_init(talloc_tos());
- if (data == NULL) {
- return false;
- }
-
- asn1_load(data, blob);
- asn1_start_tag(data, ASN1_CONTEXT(1));
- asn1_start_tag(data, ASN1_SEQUENCE(0));
- asn1_start_tag(data, ASN1_CONTEXT(2));
- asn1_read_OctetString(data, talloc_autofree_context(), auth);
- asn1_end_tag(data);
- asn1_end_tag(data);
- asn1_end_tag(data);
-
- if (data->has_error) {
- DEBUG(3,("spnego_parse_auth failed at %d\n", (int)data->ofs));
- data_blob_free(auth);
- asn1_free(data);
- return False;
- }
-
- asn1_free(data);
- return True;
-}
-
-/*
- generate a minimal SPNEGO response packet. Doesn't contain much.
+ generate a krb5 GSS-API wrapper packet given a ticket
*/
-DATA_BLOB spnego_gen_auth_response(DATA_BLOB *reply, NTSTATUS nt_status,
- const char *mechOID)
+DATA_BLOB spnego_gen_krb5_wrap(TALLOC_CTX *ctx, const DATA_BLOB ticket, const uint8_t tok_id[2])
{
ASN1_DATA *data;
- DATA_BLOB ret;
- uint8 negResult;
-
- if (NT_STATUS_IS_OK(nt_status)) {
- negResult = SPNEGO_NEG_RESULT_ACCEPT;
- } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- negResult = SPNEGO_NEG_RESULT_INCOMPLETE;
- } else {
- negResult = SPNEGO_NEG_RESULT_REJECT;
- }
+ DATA_BLOB ret = data_blob_null;
data = asn1_init(talloc_tos());
if (data == NULL) {
return data_blob_null;
}
- asn1_push_tag(data, ASN1_CONTEXT(1));
- asn1_push_tag(data, ASN1_SEQUENCE(0));
- asn1_push_tag(data, ASN1_CONTEXT(0));
- asn1_write_enumerated(data, negResult);
- asn1_pop_tag(data);
+ if (!asn1_push_tag(data, ASN1_APPLICATION(0))) goto err;
+ if (!asn1_write_OID(data, OID_KERBEROS5)) goto err;
- if (mechOID) {
- asn1_push_tag(data,ASN1_CONTEXT(1));
- asn1_write_OID(data, mechOID);
- asn1_pop_tag(data);
- }
+ if (!asn1_write(data, tok_id, 2)) goto err;
+ if (!asn1_write(data, ticket.data, ticket.length)) goto err;
+ if (!asn1_pop_tag(data)) goto err;
- if (reply && reply->data != NULL) {
- asn1_push_tag(data,ASN1_CONTEXT(2));
- asn1_write_OctetString(data, reply->data, reply->length);
- asn1_pop_tag(data);
+ if (!asn1_extract_blob(data, ctx, &ret)) {
+ goto err;
}
- asn1_pop_tag(data);
- asn1_pop_tag(data);
-
- ret = data_blob(data->data, data->length);
asn1_free(data);
- return ret;
-}
-
-/*
- parse a SPNEGO auth packet. This contains the encrypted passwords
-*/
-bool spnego_parse_auth_response(DATA_BLOB blob, NTSTATUS nt_status,
- const char *mechOID,
- DATA_BLOB *auth)
-{
- ASN1_DATA *data;
- uint8 negResult;
-
- if (NT_STATUS_IS_OK(nt_status)) {
- negResult = SPNEGO_NEG_RESULT_ACCEPT;
- } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- negResult = SPNEGO_NEG_RESULT_INCOMPLETE;
- } else {
- negResult = SPNEGO_NEG_RESULT_REJECT;
- }
-
- data = asn1_init(talloc_tos());
- if (data == NULL) {
- return false;
- }
-
- asn1_load(data, blob);
- asn1_start_tag(data, ASN1_CONTEXT(1));
- asn1_start_tag(data, ASN1_SEQUENCE(0));
- asn1_start_tag(data, ASN1_CONTEXT(0));
- asn1_check_enumerated(data, negResult);
- asn1_end_tag(data);
+ data = NULL;
- *auth = data_blob_null;
+ err:
- if (asn1_tag_remaining(data)) {
- asn1_start_tag(data,ASN1_CONTEXT(1));
- asn1_check_OID(data, mechOID);
- asn1_end_tag(data);
-
- if (asn1_tag_remaining(data)) {
- asn1_start_tag(data,ASN1_CONTEXT(2));
- asn1_read_OctetString(data, talloc_autofree_context(), auth);
- asn1_end_tag(data);
+ if (data != NULL) {
+ if (asn1_has_error(data)) {
+ DEBUG(1, ("Failed to build krb5 wrapper at offset %d\n",
+ (int)asn1_current_ofs(data)));
}
- } else if (negResult == SPNEGO_NEG_RESULT_INCOMPLETE) {
- data->has_error = 1;
- }
-
- /* Binding against Win2K DC returns a duplicate of the responseToken in
- * the optional mechListMIC field. This is a bug in Win2K. We ignore
- * this field if it exists. Win2K8 may return a proper mechListMIC at
- * which point we need to implement the integrity checking. */
- if (asn1_tag_remaining(data)) {
- DATA_BLOB mechList = data_blob_null;
- asn1_start_tag(data, ASN1_CONTEXT(3));
- asn1_read_OctetString(data, talloc_autofree_context(), &mechList);
- asn1_end_tag(data);
- data_blob_free(&mechList);
- DEBUG(5,("spnego_parse_auth_response received mechListMIC, "
- "ignoring.\n"));
- }
- asn1_end_tag(data);
- asn1_end_tag(data);
-
- if (data->has_error) {
- DEBUG(3,("spnego_parse_auth_response failed at %d\n", (int)data->ofs));
asn1_free(data);
- data_blob_free(auth);
- return False;
}
- asn1_free(data);
- return True;
+ return ret;
}
git.samba.org / sfrench / samba-autobuild / .git / blobdiff