diff options
Diffstat (limited to 'source4/auth/kerberos/gssapi_parse.c')
-rw-r--r-- | source4/auth/kerberos/gssapi_parse.c | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/source4/auth/kerberos/gssapi_parse.c b/source4/auth/kerberos/gssapi_parse.c new file mode 100644 index 0000000000..2c2c4e17e5 --- /dev/null +++ b/source4/auth/kerberos/gssapi_parse.c @@ -0,0 +1,95 @@ +/* + Unix SMB/CIFS implementation. + + simple GSSAPI wrappers + + Copyright (C) Andrew Tridgell 2001 + Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2002 + Copyright (C) Luke Howard 2003 + + 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 "asn_1.h" +#include "system/kerberos.h" +#include "auth/gensec/gensec.h" + +/* + generate a krb5 GSS-API wrapper packet given a ticket +*/ +DATA_BLOB gensec_gssapi_gen_krb5_wrap(TALLOC_CTX *mem_ctx, const DATA_BLOB *ticket, const uint8_t tok_id[2]) +{ + struct asn1_data data; + DATA_BLOB ret = data_blob(NULL,0); + + if (!ticket->data) { + return ret; + } + + ZERO_STRUCT(data); + + asn1_push_tag(&data, ASN1_APPLICATION(0)); + asn1_write_OID(&data, GENSEC_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)); + asn1_free(&data); + } + + ret = data_blob_talloc(mem_ctx, data.data, data.length); + asn1_free(&data); + + return ret; +} + +/* + parse a krb5 GSS-API wrapper packet giving a ticket +*/ +BOOL gensec_gssapi_parse_krb5_wrap(TALLOC_CTX *mem_ctx, const DATA_BLOB *blob, DATA_BLOB *ticket, uint8_t tok_id[2]) +{ + BOOL ret; + struct asn1_data data; + int data_remaining; + + asn1_load(&data, *blob); + asn1_start_tag(&data, ASN1_APPLICATION(0)); + asn1_check_OID(&data, GENSEC_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_talloc(mem_ctx, NULL, data_remaining); + asn1_read(&data, ticket->data, ticket->length); + } + + asn1_end_tag(&data); + + ret = !data.has_error; + + asn1_free(&data); + + return ret; +} + + |