diff options
Diffstat (limited to 'source4/libcli/raw/clispnego.c')
| -rw-r--r-- | source4/libcli/raw/clispnego.c | 539 |
1 files changed, 0 insertions, 539 deletions
diff --git a/source4/libcli/raw/clispnego.c b/source4/libcli/raw/clispnego.c deleted file mode 100644 index ff7d45c8c1..0000000000 --- a/source4/libcli/raw/clispnego.c +++ /dev/null @@ -1,539 +0,0 @@ -/* - Unix SMB/CIFS implementation. - simple kerberos5/SPNEGO routines - 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" - -/* - generate a negTokenInit packet given a GUID, a list of supported - OIDs (the mechanisms) and a principal name string -*/ -DATA_BLOB spnego_gen_negTokenInit(uint8_t guid[16], - const char *OIDs[], - const char *principal) -{ - int i; - ASN1_DATA data; - DATA_BLOB ret; - - memset(&data, 0, sizeof(data)); - - 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]); - } - 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)); - asn1_free(&data); - } - - 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; - - memset(&data, 0, sizeof(data)); - - 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)); - asn1_free(&data); - } - - ret = data_blob(data.data, data.length); - asn1_free(&data); - - return ret; -} - -/* - 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; - - 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; i++) { - char *aoid = NULL; - asn1_read_OID(&data,&aoid); - OIDs[i] = aoid; - } - OIDs[i] = NULL; - asn1_end_tag(&data); - asn1_end_tag(&data); - - 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,principal); - asn1_end_tag(&data); - asn1_end_tag(&data); - asn1_end_tag(&data); - - asn1_end_tag(&data); - asn1_end_tag(&data); - - asn1_end_tag(&data); - - ret = !data.has_error; - 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; - - memset(&data, 0, sizeof(data)); - - 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)); - asn1_free(&data); - } - - 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; - - 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; i++) { - char *aoid = NULL; - asn1_read_OID(&data,&aoid); - OIDs[i] = aoid; - } - OIDs[i] = NULL; - asn1_end_tag(&data); - asn1_end_tag(&data); - - asn1_start_tag(&data, ASN1_CONTEXT(2)); - asn1_read_OctetString(&data,secblob); - asn1_end_tag(&data); - - asn1_end_tag(&data); - asn1_end_tag(&data); - - asn1_end_tag(&data); - - if (data.has_error) { - 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(DATA_BLOB ticket, const uint8_t tok_id[2]) -{ - ASN1_DATA data; - DATA_BLOB ret; - - memset(&data, 0, sizeof(data)); - - 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)); - asn1_free(&data); - } - - 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_t tok_id[2]) -{ - BOOL ret; - ASN1_DATA data; - int data_remaining; - - 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; - - 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) -{ - int retval; - DATA_BLOB tkt, tkt_wrapped; - const char *krb_mechs[] = {OID_KERBEROS5_OLD, 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); - - 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); - - 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, 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, chal2); - asn1_end_tag(&data); - } - - asn1_end_tag(&data); - asn1_end_tag(&data); - - ret = !data.has_error; - 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; - - memset(&data, 0, sizeof(data)); - - 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; - - 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,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)); - asn1_free(&data); - return False; - } - - asn1_free(&data); - return True; -} - -/* - generate a minimal SPNEGO response packet. Doesn't contain much. -*/ -DATA_BLOB spnego_gen_auth_response(DATA_BLOB *reply, NTSTATUS nt_status, - const char *mechOID) -{ - ASN1_DATA data; - DATA_BLOB ret; - uint8_t 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; - } - - ZERO_STRUCT(data); - - 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 (reply->data != NULL) { - asn1_push_tag(&data,ASN1_CONTEXT(1)); - asn1_write_OID(&data, mechOID); - asn1_pop_tag(&data); - - asn1_push_tag(&data,ASN1_CONTEXT(2)); - asn1_write_OctetString(&data, reply->data, reply->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 NTLMSSP auth packet. This contains the encrypted passwords -*/ -BOOL spnego_parse_auth_response(DATA_BLOB blob, NTSTATUS nt_status, - DATA_BLOB *auth) -{ - ASN1_DATA data; - uint8_t 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; - } - - 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); - - if (negResult == SPNEGO_NEG_RESULT_INCOMPLETE) { - 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, auth); - asn1_end_tag(&data); - } - - 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; -} - |