diff options
Diffstat (limited to 'source3/libads/authdata.c')
| -rw-r--r-- | source3/libads/authdata.c | 1088 |
1 files changed, 232 insertions, 856 deletions
diff --git a/source3/libads/authdata.c b/source3/libads/authdata.c index 9a6f1061df..0bde3e6984 100644 --- a/source3/libads/authdata.c +++ b/source3/libads/authdata.c @@ -1,23 +1,23 @@ -/* +/* Unix SMB/CIFS implementation. kerberos authorization data (PAC) utility library - Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003 + Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2005 Copyright (C) Andrew Tridgell 2001 Copyright (C) Luke Howard 2002-2003 Copyright (C) Stefan Metzmacher 2004-2005 - Copyright (C) Guenther Deschner 2005,2007 - + Copyright (C) Guenther Deschner 2005,2007,2008 + 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 (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, see <http://www.gnu.org/licenses/>. */ @@ -26,628 +26,14 @@ #ifdef HAVE_KRB5 -static bool pac_io_logon_name(const char *desc, PAC_LOGON_NAME *logon_name, - prs_struct *ps, int depth) -{ - if (NULL == logon_name) - return False; - - prs_debug(ps, depth, desc, "pac_io_logon_name"); - depth++; - - if (!smb_io_time("logon_time", &logon_name->logon_time, ps, depth)) - return False; - - if (!prs_uint16("len", ps, depth, &logon_name->len)) - return False; - - /* The following string is always in little endian 16 bit values, - copy as 8 bits to avoid endian reversal on big-endian machines. - len is the length in bytes. */ - - if (UNMARSHALLING(ps) && logon_name->len) { - logon_name->username = PRS_ALLOC_MEM(ps, uint8, logon_name->len); - if (!logon_name->username) { - DEBUG(3, ("No memory available\n")); - return False; - } - } - - if (!prs_uint8s(True, "name", ps, depth, logon_name->username, logon_name->len)) - return False; - - return True; -} - -#if 0 /* Unused (handled now in net_io_user_info3()) - Guenther */ -static bool pac_io_krb_sids(const char *desc, KRB_SID_AND_ATTRS *sid_and_attr, - prs_struct *ps, int depth) -{ - if (NULL == sid_and_attr) - return False; - - prs_debug(ps, depth, desc, "pac_io_krb_sids"); - depth++; - - if (UNMARSHALLING(ps)) { - sid_and_attr->sid = PRS_ALLOC_MEM(ps, DOM_SID2, 1); - if (!sid_and_attr->sid) { - DEBUG(3, ("No memory available\n")); - return False; - } - } - - if(!smb_io_dom_sid2("sid", sid_and_attr->sid, ps, depth)) - return False; - - return True; -} - - -static bool pac_io_krb_attrs(const char *desc, KRB_SID_AND_ATTRS *sid_and_attr, - prs_struct *ps, int depth) -{ - if (NULL == sid_and_attr) - return False; - - prs_debug(ps, depth, desc, "pac_io_krb_attrs"); - depth++; - - if (!prs_uint32("sid_ptr", ps, depth, &sid_and_attr->sid_ptr)) - return False; - if (!prs_uint32("attrs", ps, depth, &sid_and_attr->attrs)) - return False; - - return True; -} - -static bool pac_io_krb_sid_and_attr_array(const char *desc, - KRB_SID_AND_ATTR_ARRAY *array, - uint32 num, - prs_struct *ps, int depth) -{ - int i; - - if (NULL == array) - return False; - - prs_debug(ps, depth, desc, "pac_io_krb_sid_and_attr_array"); - depth++; - - - if (!prs_uint32("count", ps, depth, &array->count)) - return False; - - if (UNMARSHALLING(ps)) { - if (num) { - array->krb_sid_and_attrs = PRS_ALLOC_MEM(ps, KRB_SID_AND_ATTRS, num); - if (!array->krb_sid_and_attrs) { - DEBUG(3, ("No memory available\n")); - return False; - } - } else { - array->krb_sid_and_attrs = NULL; - } - } - - for (i=0; i<num; i++) { - if (!pac_io_krb_attrs(desc, - &array->krb_sid_and_attrs[i], - ps, depth)) - return False; - - } - for (i=0; i<num; i++) { - if (!pac_io_krb_sids(desc, - &array->krb_sid_and_attrs[i], - ps, depth)) - return False; - - } - - return True; - -} -#endif - -static bool pac_io_group_membership(const char *desc, - GROUP_MEMBERSHIP *membership, - prs_struct *ps, int depth) -{ - if (NULL == membership) - return False; - - prs_debug(ps, depth, desc, "pac_io_group_membership"); - depth++; - - if (!prs_uint32("rid", ps, depth, &membership->rid)) - return False; - if (!prs_uint32("attrs", ps, depth, &membership->attrs)) - return False; - - return True; -} - - -static bool pac_io_group_membership_array(const char *desc, - GROUP_MEMBERSHIP_ARRAY *array, - uint32 num, - prs_struct *ps, int depth) -{ - int i; - - if (NULL == array) - return False; - - prs_debug(ps, depth, desc, "pac_io_group_membership_array"); - depth++; - - - if (!prs_uint32("count", ps, depth, &array->count)) - return False; - - if (UNMARSHALLING(ps)) { - if (num) { - array->group_membership = PRS_ALLOC_MEM(ps, GROUP_MEMBERSHIP, num); - if (!array->group_membership) { - DEBUG(3, ("No memory available\n")); - return False; - } - } else { - array->group_membership = NULL; - } - } - - for (i=0; i<num; i++) { - if (!pac_io_group_membership(desc, - &array->group_membership[i], - ps, depth)) - return False; - - } - - return True; - -} - -#if 0 /* Unused, replaced using an expanded net_io_user_info3() now - Guenther */ -static bool pac_io_pac_logon_info(const char *desc, PAC_LOGON_INFO *info, - prs_struct *ps, int depth) -{ - uint32 garbage = 0, i; - - if (NULL == info) - return False; - - prs_debug(ps, depth, desc, "pac_io_pac_logon_info"); - depth++; - - if (!prs_align(ps)) - return False; - if (!prs_uint32("unknown", ps, depth, &garbage)) /* 00081001 */ - return False; - if (!prs_uint32("unknown", ps, depth, &garbage)) /* cccccccc */ - return False; - if (!prs_uint32("bufferlen", ps, depth, &garbage)) - return False; - if (!prs_uint32("bufferlenhi", ps, depth, &garbage)) /* 00000000 */ - return False; - - if (!prs_uint32("pointer", ps, depth, &garbage)) - return False; - - if (!prs_align(ps)) - return False; - if (!smb_io_time("logon_time", &info->logon_time, ps, depth)) - return False; - if (!smb_io_time("logoff_time", &info->logoff_time, ps, depth)) - return False; - if (!smb_io_time("kickoff_time", &info->kickoff_time, ps, depth)) - return False; - if (!smb_io_time("pass_last_set_time", &info->pass_last_set_time, - ps, depth)) - return False; - if (!smb_io_time("pass_can_change_time", &info->pass_can_change_time, - ps, depth)) - return False; - if (!smb_io_time("pass_must_change_time", &info->pass_must_change_time, - ps, depth)) - return False; - - if (!smb_io_unihdr("hdr_user_name", &info->hdr_user_name, ps, depth)) - return False; - if (!smb_io_unihdr("hdr_full_name", &info->hdr_full_name, ps, depth)) - return False; - if (!smb_io_unihdr("hdr_logon_script", &info->hdr_logon_script, - ps, depth)) - return False; - if (!smb_io_unihdr("hdr_profile_path", &info->hdr_profile_path, - ps, depth)) - return False; - if (!smb_io_unihdr("hdr_home_dir", &info->hdr_home_dir, ps, depth)) - return False; - if (!smb_io_unihdr("hdr_dir_drive", &info->hdr_dir_drive, ps, depth)) - return False; - - if (!prs_uint16("logon_count", ps, depth, &info->logon_count)) - return False; - if (!prs_uint16("bad_password_count", ps, depth, &info->bad_password_count)) - return False; - if (!prs_uint32("user_rid", ps, depth, &info->user_rid)) - return False; - if (!prs_uint32("group_rid", ps, depth, &info->group_rid)) - return False; - if (!prs_uint32("group_count", ps, depth, &info->group_count)) - return False; - /* I haven't seen this contain anything yet, but when it does - we will have to make sure we decode the contents in the middle - all the unistr2s ... */ - if (!prs_uint32("group_mem_ptr", ps, depth, - &info->group_membership_ptr)) - return False; - if (!prs_uint32("user_flags", ps, depth, &info->user_flags)) - return False; - - if (!prs_uint8s(False, "session_key", ps, depth, info->session_key, 16)) - return False; - - if (!smb_io_unihdr("hdr_dom_controller", - &info->hdr_dom_controller, ps, depth)) - return False; - if (!smb_io_unihdr("hdr_dom_name", &info->hdr_dom_name, ps, depth)) - return False; - - /* this should be followed, but just get ptr for now */ - if (!prs_uint32("ptr_dom_sid", ps, depth, &info->ptr_dom_sid)) - return False; - - if (!prs_uint8s(False, "lm_session_key", ps, depth, info->lm_session_key, 8)) - return False; - - if (!prs_uint32("acct_flags", ps, depth, &info->acct_flags)) - return False; - - for (i = 0; i < 7; i++) - { - if (!prs_uint32("unkown", ps, depth, &info->unknown[i])) /* unknown */ - return False; - } - - if (!prs_uint32("sid_count", ps, depth, &info->sid_count)) - return False; - if (!prs_uint32("ptr_extra_sids", ps, depth, &info->ptr_extra_sids)) - return False; - if (!prs_uint32("ptr_res_group_dom_sid", ps, depth, - &info->ptr_res_group_dom_sid)) - return False; - if (!prs_uint32("res_group_count", ps, depth, &info->res_group_count)) - return False; - if (!prs_uint32("ptr_res_groups", ps, depth, &info->ptr_res_groups)) - return False; - - if(!smb_io_unistr2("uni_user_name", &info->uni_user_name, - info->hdr_user_name.buffer, ps, depth)) - return False; - if(!smb_io_unistr2("uni_full_name", &info->uni_full_name, - info->hdr_full_name.buffer, ps, depth)) - return False; - if(!smb_io_unistr2("uni_logon_script", &info->uni_logon_script, - info->hdr_logon_script.buffer, ps, depth)) - return False; - if(!smb_io_unistr2("uni_profile_path", &info->uni_profile_path, - info->hdr_profile_path.buffer, ps, depth)) - return False; - if(!smb_io_unistr2("uni_home_dir", &info->uni_home_dir, - info->hdr_home_dir.buffer, ps, depth)) - return False; - if(!smb_io_unistr2("uni_dir_drive", &info->uni_dir_drive, - info->hdr_dir_drive.buffer, ps, depth)) - return False; - - if (info->group_membership_ptr) { - if (!pac_io_group_membership_array("group membership", - &info->groups, - info->group_count, - ps, depth)) - return False; - } - - - if(!smb_io_unistr2("uni_dom_controller", &info->uni_dom_controller, - info->hdr_dom_controller.buffer, ps, depth)) - return False; - if(!smb_io_unistr2("uni_dom_name", &info->uni_dom_name, - info->hdr_dom_name.buffer, ps, depth)) - return False; - - if(info->ptr_dom_sid) - if(!smb_io_dom_sid2("dom_sid", &info->dom_sid, ps, depth)) - return False; - - - if (info->sid_count && info->ptr_extra_sids) - if (!pac_io_krb_sid_and_attr_array("extra_sids", - &info->extra_sids, - info->sid_count, - ps, depth)) - return False; - - if (info->ptr_res_group_dom_sid) - if (!smb_io_dom_sid2("res_group_dom_sid", - &info->res_group_dom_sid, ps, depth)) - return False; - - if (info->ptr_res_groups) { - - if (!(info->user_flgs & LOGON_RESOURCE_GROUPS)) { - DEBUG(0,("user_flgs attribute does not have LOGON_RESOURCE_GROUPS\n")); - /* return False; */ - } - - if (!pac_io_group_membership_array("res group membership", - &info->res_groups, - info->res_group_count, - ps, depth)) - return False; - } - - return True; -} -#endif - -static bool pac_io_pac_logon_info(const char *desc, PAC_LOGON_INFO *info, - prs_struct *ps, int depth) -{ - uint32 garbage = 0; - bool kerb_validation_info = True; - - if (NULL == info) - return False; - - prs_debug(ps, depth, desc, "pac_io_pac_logon_info"); - depth++; - - if (!prs_align(ps)) - return False; - if (!prs_uint32("unknown", ps, depth, &garbage)) /* 00081001 */ - return False; - if (!prs_uint32("unknown", ps, depth, &garbage)) /* cccccccc */ - return False; - if (!prs_uint32("bufferlen", ps, depth, &garbage)) - return False; - if (!prs_uint32("bufferlenhi", ps, depth, &garbage)) /* 00000000 */ - return False; - - if(!net_io_user_info3("", &info->info3, ps, depth, 3, kerb_validation_info)) - return False; - - if (info->info3.ptr_res_group_dom_sid) { - if (!smb_io_dom_sid2("res_group_dom_sid", - &info->res_group_dom_sid, ps, depth)) - return False; - } - - if (info->info3.ptr_res_groups) { - - if (!(info->info3.user_flgs & LOGON_RESOURCE_GROUPS)) { - DEBUG(0,("user_flgs attribute does not have LOGON_RESOURCE_GROUPS\n")); - /* return False; */ - } - - if (!pac_io_group_membership_array("res group membership", - &info->res_groups, - info->info3.res_group_count, - ps, depth)) - return False; - } - - return True; -} - - - -static bool pac_io_pac_signature_data(const char *desc, - PAC_SIGNATURE_DATA *data, uint32 length, - prs_struct *ps, int depth) -{ - uint32 siglen = 0; - - prs_debug(ps, depth, desc, "pac_io_pac_signature_data"); - depth++; - - if (data == NULL) - return False; - - if (!prs_align(ps)) - return False; - if (!prs_uint32("type", ps, depth, &data->type)) - return False; - - if ( length > sizeof(uint32) ) - siglen = length - sizeof(uint32); - - if (UNMARSHALLING(ps) && length) { - if (siglen) { - data->signature.buffer = PRS_ALLOC_MEM(ps, uint8, siglen); - if (!data->signature.buffer) { - DEBUG(3, ("No memory available\n")); - return False; - } - } else { - data->signature.buffer = NULL; - } - } - - data->signature.buf_len = siglen; - - if (!prs_uint8s(False, "signature", ps, depth, data->signature.buffer, data->signature.buf_len)) - return False; - - - return True; -} - -static bool pac_io_pac_info_hdr_ctr(const char *desc, PAC_BUFFER *hdr, - prs_struct *ps, int depth) -{ - if (NULL == hdr) - return False; - - prs_debug(ps, depth, desc, "pac_io_pac_info_hdr_ctr"); - depth++; - - if (!prs_align(ps)) - return False; - - if (hdr->offset != prs_offset(ps)) { - DEBUG(5,("offset in header(x%x) and data(x%x) do not match, correcting\n", - hdr->offset, prs_offset(ps))); - prs_set_offset(ps, hdr->offset); - } - - if (UNMARSHALLING(ps) && hdr->size > 0) { - hdr->ctr = PRS_ALLOC_MEM(ps, PAC_INFO_CTR, 1); - if (!hdr->ctr) { - DEBUG(3, ("No memory available\n")); - return False; - } - } - - switch(hdr->type) { - case PAC_TYPE_LOGON_INFO: - DEBUG(5, ("PAC_TYPE_LOGON_INFO\n")); - if (UNMARSHALLING(ps)) - hdr->ctr->pac.logon_info = PRS_ALLOC_MEM(ps, PAC_LOGON_INFO, 1); - if (!hdr->ctr->pac.logon_info) { - DEBUG(3, ("No memory available\n")); - return False; - } - if (!pac_io_pac_logon_info(desc, hdr->ctr->pac.logon_info, - ps, depth)) - return False; - break; - - case PAC_TYPE_SERVER_CHECKSUM: - DEBUG(5, ("PAC_TYPE_SERVER_CHECKSUM\n")); - if (UNMARSHALLING(ps)) - hdr->ctr->pac.srv_cksum = PRS_ALLOC_MEM(ps, PAC_SIGNATURE_DATA, 1); - if (!hdr->ctr->pac.srv_cksum) { - DEBUG(3, ("No memory available\n")); - return False; - } - if (!pac_io_pac_signature_data(desc, hdr->ctr->pac.srv_cksum, - hdr->size, ps, depth)) - return False; - break; - - case PAC_TYPE_PRIVSVR_CHECKSUM: - DEBUG(5, ("PAC_TYPE_PRIVSVR_CHECKSUM\n")); - if (UNMARSHALLING(ps)) - hdr->ctr->pac.privsrv_cksum = PRS_ALLOC_MEM(ps, PAC_SIGNATURE_DATA, 1); - if (!hdr->ctr->pac.privsrv_cksum) { - DEBUG(3, ("No memory available\n")); - return False; - } - if (!pac_io_pac_signature_data(desc, - hdr->ctr->pac.privsrv_cksum, - hdr->size, ps, depth)) - return False; - break; - - case PAC_TYPE_LOGON_NAME: - DEBUG(5, ("PAC_TYPE_LOGON_NAME\n")); - if (UNMARSHALLING(ps)) - hdr->ctr->pac.logon_name = PRS_ALLOC_MEM(ps, PAC_LOGON_NAME, 1); - if (!hdr->ctr->pac.logon_name) { - DEBUG(3, ("No memory available\n")); - return False; - } - if (!pac_io_logon_name(desc, hdr->ctr->pac.logon_name, - ps, depth)) - return False; - break; - - default: - /* dont' know, so we need to skip it */ - DEBUG(3, ("unknown PAC type %d\n", hdr->type)); - prs_set_offset(ps, prs_offset(ps) + hdr->size); - } - -#if 0 - /* obscure pad */ - if (!prs_uint32("pad", ps, depth, &hdr->pad)) - return False; -#endif - return True; -} - -static bool pac_io_pac_info_hdr(const char *desc, PAC_BUFFER *hdr, - prs_struct *ps, int depth) -{ - if (NULL == hdr) - return False; - - prs_debug(ps, depth, desc, "pac_io_pac_info_hdr"); - depth++; - - if (!prs_align(ps)) - return False; - if (!prs_uint32("type", ps, depth, &hdr->type)) - return False; - if (!prs_uint32("size", ps, depth, &hdr->size)) - return False; - if (!prs_uint32("offset", ps, depth, &hdr->offset)) - return False; - if (!prs_uint32("offsethi", ps, depth, &hdr->offsethi)) - return False; - - return True; -} - -static bool pac_io_pac_data(const char *desc, PAC_DATA *data, - prs_struct *ps, int depth) -{ - int i; - - if (NULL == data) - return False; - - prs_debug(ps, depth, desc, "pac_io_pac_data"); - depth++; - - if (!prs_align(ps)) - return False; - if (!prs_uint32("num_buffers", ps, depth, &data->num_buffers)) - return False; - if (!prs_uint32("version", ps, depth, &data->version)) - return False; - - if (UNMARSHALLING(ps) && data->num_buffers > 0) { - if ((data->pac_buffer = PRS_ALLOC_MEM(ps, PAC_BUFFER, data->num_buffers)) == NULL) { - return False; - } - } - - for (i=0; i<data->num_buffers; i++) { - if (!pac_io_pac_info_hdr(desc, &data->pac_buffer[i], ps, - depth)) - return False; - } - - for (i=0; i<data->num_buffers; i++) { - if (!pac_io_pac_info_hdr_ctr(desc, &data->pac_buffer[i], - ps, depth)) - return False; - } - - return True; -} +/**************************************************************** +****************************************************************/ -static NTSTATUS check_pac_checksum(TALLOC_CTX *mem_ctx, - DATA_BLOB pac_data, - PAC_SIGNATURE_DATA *sig, - krb5_context context, - krb5_keyblock *keyblock) +static krb5_error_code check_pac_checksum(TALLOC_CTX *mem_ctx, + DATA_BLOB pac_data, + struct PAC_SIGNATURE_DATA *sig, + krb5_context context, + krb5_keyblock *keyblock) { krb5_error_code ret; krb5_checksum cksum; @@ -663,299 +49,289 @@ static NTSTATUS check_pac_checksum(TALLOC_CTX *mem_ctx, #error UNKNOWN_KRB5_KEYUSAGE #endif - ret = smb_krb5_verify_checksum(context, - keyblock, - usage, + ret = smb_krb5_verify_checksum(context, + keyblock, + usage, &cksum, - pac_data.data, + pac_data.data, pac_data.length); if (ret) { - DEBUG(2,("check_pac_checksum: PAC Verification failed: %s (%d)\n", + DEBUG(2,("check_pac_checksum: PAC Verification failed: %s (%d)\n", error_message(ret), ret)); - return NT_STATUS_ACCESS_DENIED; + return ret; } - return NT_STATUS_OK; -} - -static NTSTATUS parse_pac_data(TALLOC_CTX *mem_ctx, DATA_BLOB *pac_data_blob, PAC_DATA *pac_data) -{ - prs_struct ps; - PAC_DATA *my_pac; - - if (!prs_init(&ps, pac_data_blob->length, mem_ctx, UNMARSHALL)) - return NT_STATUS_NO_MEMORY; - - if (!prs_copy_data_in(&ps, (char *)pac_data_blob->data, pac_data_blob->length)) - return NT_STATUS_INVALID_PARAMETER; - - prs_set_offset(&ps, 0); - - my_pac = TALLOC_ZERO_P(mem_ctx, PAC_DATA); - if (!pac_io_pac_data("pac data", my_pac, &ps, 0)) - return NT_STATUS_INVALID_PARAMETER; - - prs_mem_free(&ps); - - *pac_data = *my_pac; - - return NT_STATUS_OK; -} - -/* just for debugging, will be removed later - Guenther */ -char *pac_group_attr_string(uint32 attr) -{ - fstring name = ""; - - if (!attr) - return NULL; - - if (attr & SE_GROUP_MANDATORY) fstrcat(name, "SE_GROUP_MANDATORY "); - if (attr & SE_GROUP_ENABLED_BY_DEFAULT) fstrcat(name, "SE_GROUP_ENABLED_BY_DEFAULT "); - if (attr & SE_GROUP_ENABLED) fstrcat(name, "SE_GROUP_ENABLED "); - if (attr & SE_GROUP_OWNER) fstrcat(name, "SE_GROUP_OWNER "); - if (attr & SE_GROUP_USE_FOR_DENY_ONLY) fstrcat(name, "SE_GROUP_USE_FOR_DENY_ONLY "); - if (attr & SE_GROUP_LOGON_ID) fstrcat(name, "SE_GROUP_LOGON_ID "); - if (attr & SE_GROUP_RESOURCE) fstrcat(name, "SE_GROUP_RESOURCE "); - - return SMB_STRDUP(name); + return ret; } -/* just for debugging, will be removed later - Guenther */ -void dump_pac_logon_info(int lvl, PAC_LOGON_INFO *logon_info) -{ - DOM_SID dom_sid, res_group_dom_sid; - int i; - char *attr_string; - uint32 user_flgs = logon_info->info3.user_flgs; - - if (logon_info->info3.ptr_res_group_dom_sid) { - sid_copy(&res_group_dom_sid, &logon_info->res_group_dom_sid.sid); - } - sid_copy(&dom_sid, &logon_info->info3.dom_sid.sid); - - DEBUG(lvl,("The PAC:\n")); - - DEBUGADD(lvl,("\tUser Flags: 0x%x (%d)\n", user_flgs, user_flgs)); - if (user_flgs & LOGON_EXTRA_SIDS) - DEBUGADD(lvl,("\tUser Flags: LOGON_EXTRA_SIDS 0x%x (%d)\n", LOGON_EXTRA_SIDS, LOGON_EXTRA_SIDS)); - if (user_flgs & LOGON_RESOURCE_GROUPS) - DEBUGADD(lvl,("\tUser Flags: LOGON_RESOURCE_GROUPS 0x%x (%d)\n", LOGON_RESOURCE_GROUPS, LOGON_RESOURCE_GROUPS)); - DEBUGADD(lvl,("\tUser SID: %s-%d\n", sid_string_dbg(&dom_sid), - logon_info->info3.user_rid)); - DEBUGADD(lvl,("\tGroup SID: %s-%d\n", sid_string_dbg(&dom_sid), - logon_info->info3.group_rid)); - - DEBUGADD(lvl,("\tGroup Membership (Global and Universal Groups of own domain):\n")); - for (i = 0; i < logon_info->info3.num_groups; i++) { - attr_string = pac_group_attr_string(logon_info->info3.gids[i].attr); - DEBUGADD(lvl,("\t\t%d: sid: %s-%d\n\t\t attr: 0x%x == %s\n", - i, sid_string_dbg(&dom_sid), - logon_info->info3.gids[i].g_rid, - logon_info->info3.gids[i].attr, - attr_string)); - SAFE_FREE(attr_string); - } - - DEBUGADD(lvl,("\tGroup Membership (Domain Local Groups and Groups from Trusted Domains):\n")); - for (i = 0; i < logon_info->info3.num_other_sids; i++) { - attr_string = pac_group_attr_string(logon_info->info3.other_sids_attrib[i]); - DEBUGADD(lvl,("\t\t%d: sid: %s\n\t\t attr: 0x%x == %s\n", - i, sid_string_dbg( - &logon_info->info3.other_sids[i].sid), - logon_info->info3.other_sids_attrib[i], - attr_string)); - SAFE_FREE(attr_string); - } - - DEBUGADD(lvl,("\tGroup Membership (Resource Groups (SID History ?)):\n")); - for (i = 0; i < logon_info->info3.res_group_count; i++) { - attr_string = pac_group_attr_string(logon_info->res_groups.group_membership[i].attrs); - DEBUGADD(lvl,("\t\t%d: sid: %s-%d\n\t\t attr: 0x%x == %s\n", - i, sid_string_dbg(&res_group_dom_sid), - logon_info->res_groups.group_membership[i].rid, - logon_info->res_groups.group_membership[i].attrs, - attr_string)); - SAFE_FREE(attr_string); - } -} +/**************************************************************** +****************************************************************/ NTSTATUS decode_pac_data(TALLOC_CTX *mem_ctx, DATA_BLOB *pac_data_blob, - krb5_context context, + krb5_context context, krb5_keyblock *service_keyblock, krb5_const_principal client_principal, time_t tgs_authtime, - PAC_DATA **pac_data) - + struct PAC_DATA **pac_data_out) { - DATA_BLOB modified_pac_blob; - PAC_DATA *my_pac; - NTSTATUS nt_status; + NTSTATUS status; + enum ndr_err_code ndr_err; krb5_error_code ret; - PAC_SIGNATURE_DATA *srv_sig = NULL; - PAC_SIGNATURE_DATA *kdc_sig = NULL; - PAC_LOGON_NAME *logon_name = NULL; - PAC_LOGON_INFO *logon_info = NULL; - krb5_principal client_principal_pac = NULL; - NTTIME tgs_authtime_nttime; - int i, srv_sig_pos = 0, kdc_sig_pos = 0; - fstring username; + DATA_BLOB modified_pac_blob; - *pac_data = NULL; + NTTIME tgs_authtime_nttime; + krb5_principal client_principal_pac = NULL; + int i; - my_pac = talloc(mem_ctx, PAC_DATA); - if (!my_pac) { + struct PAC_SIGNATURE_DATA *srv_sig_ptr = NULL; + struct PAC_SIGNATURE_DATA *kdc_sig_ptr = NULL; + struct PAC_SIGNATURE_DATA *srv_sig_wipe = NULL; + struct PAC_SIGNATURE_DATA *kdc_sig_wipe = NULL; + struct PAC_LOGON_NAME *logon_name = NULL; + struct PAC_LOGON_INFO *logon_info = NULL; + struct PAC_DATA *pac_data = NULL; + struct PAC_DATA_RAW *pac_data_raw = NULL; + + DATA_BLOB *srv_sig_blob = NULL; + DATA_BLOB *kdc_sig_blob = NULL; + + *pac_data_out = NULL; + + pac_data = TALLOC_ZERO_P(mem_ctx, struct PAC_DATA); + pac_data_raw = TALLOC_ZERO_P(mem_ctx, struct PAC_DATA_RAW); + kdc_sig_wipe = TALLOC_ZERO_P(mem_ctx, struct PAC_SIGNATURE_DATA); + srv_sig_wipe = TALLOC_ZERO_P(mem_ctx, struct PAC_SIGNATURE_DATA); + if (!pac_data_raw || !pac_data || !kdc_sig_wipe || !srv_sig_wipe) { return NT_STATUS_NO_MEMORY; } - nt_status = parse_pac_data(mem_ctx, pac_data_blob, my_pac); - if (!NT_STATUS_IS_OK(nt_status)) { - DEBUG(0,("decode_pac_data: failed to parse PAC\n")); - return nt_status; + ndr_err = ndr_pull_struct_blob(pac_data_blob, pac_data, + pac_data, + (ndr_pull_flags_fn_t)ndr_pull_PAC_DATA); + if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) { + status = ndr_map_error2ntstatus(ndr_err); + DEBUG(0,("can't parse the PAC: %s\n", + nt_errstr(status))); + return status; } - modified_pac_blob = data_blob_talloc(mem_ctx, pac_data_blob->data, pac_data_blob->length); + if (pac_data->num_buffers < 4) { + /* we need logon_ingo, service_key and kdc_key */ + DEBUG(0,("less than 4 PAC buffers\n")); + return NT_STATUS_INVALID_PARAMETER; + } - if (my_pac->num_buffers < 4) { - nt_status = NT_STATUS_INVALID_PARAMETER; - goto out; + ndr_err = ndr_pull_struct_blob(pac_data_blob, pac_data_raw, + pac_data_raw, + (ndr_pull_flags_fn_t)ndr_pull_PAC_DATA_RAW); + if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) { + status = ndr_map_error2ntstatus(ndr_err); + DEBUG(0,("can't parse the PAC: %s\n", + nt_errstr(status))); + return status; + } + + if (pac_data_raw->num_buffers < 4) { + /* we need logon_ingo, service_key and kdc_key */ + DEBUG(0,("less than 4 PAC buffers\n")); + return NT_STATUS_INVALID_PARAMETER; + } + + if (pac_data->num_buffers != pac_data_raw->num_buffers) { + /* we need logon_ingo, service_key and kdc_key */ + DEBUG(0,("misparse! PAC_DATA has %d buffers while PAC_DATA_RAW has %d\n", + pac_data->num_buffers, pac_data_raw->num_buffers)); + return NT_STATUS_INVALID_PARAMETER; } - /* store signatures */ - for (i=0; i < my_pac->num_buffers; i++) { - - switch (my_pac->pac_buffer[i].type) { - - case PAC_TYPE_SERVER_CHECKSUM: - if (!my_pac->pac_buffer[i].ctr->pac.srv_cksum) { + for (i=0; i < pac_data->num_buffers; i++) { + if (pac_data->buffers[i].type != pac_data_raw->buffers[i].type) { + DEBUG(0,("misparse! PAC_DATA buffer %d has type %d while PAC_DATA_RAW has %d\n", + i, pac_data->buffers[i].type, pac_data->buffers[i].type)); + return NT_STATUS_INVALID_PARAMETER; + } + switch (pac_data->buffers[i].type) { + case PAC_TYPE_LOGON_INFO: + if (!pac_data->buffers[i].info) { break; } - - srv_sig = my_pac->pac_buffer[i].ctr->pac.srv_cksum; - - /* get position of signature buffer */ - srv_sig_pos = my_pac->pac_buffer[i].offset; - srv_sig_pos += sizeof(uint32); - + logon_info = pac_data->buffers[i].info->logon_info.info; break; - - case PAC_TYPE_PRIVSVR_CHECKSUM: - if (!my_pac->pac_buffer[i].ctr->pac.privsrv_cksum) { + case PAC_TYPE_SRV_CHECKSUM: + if (!pac_data->buffers[i].info) { break; } - - kdc_sig = my_pac->pac_buffer[i].ctr->pac.privsrv_cksum; - - /* get position of signature buffer */ - kdc_sig_pos = my_pac->pac_buffer[i].offset; - kdc_sig_pos += sizeof(uint32); - + srv_sig_ptr = &pac_data->buffers[i].info->srv_cksum; + srv_sig_blob = &pac_data_raw->buffers[i].info->remaining; break; - - case PAC_TYPE_LOGON_NAME: - if (!my_pac->pac_buffer[i].ctr->pac.logon_name) { + case PAC_TYPE_KDC_CHECKSUM: + if (!pac_data->buffers[i].info) { break; } - - logon_name = my_pac->pac_buffer[i].ctr->pac.logon_name; + kdc_sig_ptr = &pac_data->buffers[i].info->kdc_cksum; + kdc_sig_blob = &pac_data_raw->buffers[i].info->remaining; + break; + case PAC_TYPE_LOGON_NAME: + logon_name = &pac_data->buffers[i].info->logon_name; + break; + default: break; + } + } - case PAC_TYPE_LOGON_INFO: - if (!my_pac->pac_buffer[i].ctr->pac.logon_info) { - break; - } + if (!logon_info) { + DEBUG(0,("PAC no logon_info\n")); + return NT_STATUS_INVALID_PARAMETER; + } - logon_info = my_pac->pac_buffer[i].ctr->pac.logon_info; - break; - } + if (!logon_name) { + DEBUG(0,("PAC no logon_name\n")); + return NT_STATUS_INVALID_PARAMETER; + } + if (!srv_sig_ptr || !srv_sig_blob) { + DEBUG(0,("PAC no srv_key\n")); + return NT_STATUS_INVALID_PARAMETER; } - if (!srv_sig || !kdc_sig || !logon_name || !logon_info) { - nt_status = NT_STATUS_INVALID_PARAMETER; - goto out; + if (!kdc_sig_ptr || !kdc_sig_blob) { + DEBUG(0,("PAC no kdc_key\n")); + return NT_STATUS_INVALID_PARAMETER; } - /* zero PAC_SIGNATURE_DATA signature buffer */ - memset(&modified_pac_blob.data[srv_sig_pos], '\0', srv_sig->signature.buf_len); - memset(&modified_pac_blob.data[kdc_sig_pos], '\0', kdc_sig->signature.buf_len); + /* Find and zero out the signatures, as required by the signing algorithm */ - /* check server signature */ - nt_status = check_pac_checksum(mem_ctx, modified_pac_blob, srv_sig, context, service_keyblock); - if (!NT_STATUS_IS_OK(nt_status)) { - DEBUG(0,("decode_pac_data: failed to verify PAC server signature\n")); - goto out; + /* We find the data blobs above, now we parse them to get at the exact portion we should zero */ + ndr_err = ndr_pull_struct_blob(kdc_sig_blob, kdc_sig_wipe, + kdc_sig_wipe, + (ndr_pull_flags_fn_t)ndr_pull_PAC_SIGNATURE_DATA); + if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) { + status = ndr_map_error2ntstatus(ndr_err); + DEBUG(0,("can't parse the KDC signature: %s\n", + nt_errstr(status))); + return status; } - /* Convert to NT time, so as not to loose accuracy in comparison */ - unix_to_nt_time(&tgs_authtime_nttime, tgs_authtime); + ndr_err = ndr_pull_struct_blob(srv_sig_blob, srv_sig_wipe, + srv_sig_wipe, + (ndr_pull_flags_fn_t)ndr_pull_PAC_SIGNATURE_DATA); + if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) { + status = ndr_map_error2ntstatus(ndr_err); + DEBUG(0,("can't parse the SRV signature: %s\n", + nt_errstr(status))); + return status; + } - if (!nt_time_equals(&tgs_authtime_nttime, &logon_name->logon_time)) { - - DEBUG(2,("decode_pac_data: Logon time mismatch between ticket and PAC!\n")); - DEBUGADD(2, ("decode_pac_data: PAC: %s\n", - http_timestring(nt_time_to_unix(logon_name->logon_time)))); - DEBUGADD(2, ("decode_pac_data: Ticket: %s\n", - http_timestring(nt_time_to_unix(tgs_authtime_nttime)))); - - nt_status = NT_STATUS_ACCESS_DENIED; - goto out; + /* Now zero the decoded structure */ + memset(kdc_sig_wipe->signature.data, '\0', kdc_sig_wipe->signature.length); + memset(srv_sig_wipe->signature.data, '\0', srv_sig_wipe->signature.length); + + /* and reencode, back into the same place it came from */ + ndr_err = ndr_push_struct_blob(kdc_sig_blob, pac_data_raw, + kdc_sig_wipe, + (ndr_push_flags_fn_t)ndr_push_PAC_SIGNATURE_DATA); + if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) { + status = ndr_map_error2ntstatus(ndr_err); + DEBUG(0,("can't repack the KDC signature: %s\n", + nt_errstr(status))); + return status; + } + ndr_err = ndr_push_struct_blob(srv_sig_blob, pac_data_raw, + srv_sig_wipe, + (ndr_push_flags_fn_t)ndr_push_PAC_SIGNATURE_DATA); + if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) { + status = ndr_map_error2ntstatus(ndr_err); + DEBUG(0,("can't repack the SRV signature: %s\n", + nt_errstr(status))); + return status; } - if (!logon_name->len) { - DEBUG(2,("decode_pac_data: No Logon Name available\n")); - nt_status = NT_STATUS_INVALID_PARAMETER; - goto out; + /* push out the whole structure, but now with zero'ed signatures */ + ndr_err = ndr_push_struct_blob(&modified_pac_blob, pac_data_raw, + pac_data_raw, + (ndr_push_flags_fn_t)ndr_push_PAC_DATA_RAW); + if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) { + status = ndr_map_error2ntstatus(ndr_err); + DEBUG(0,("can't repack the RAW PAC: %s\n", + nt_errstr(status))); + return status; } - rpcstr_pull(username, logon_name->username, sizeof(username), logon_name->len, 0); - ret = smb_krb5_parse_name_norealm(context, username, &client_principal_pac); + /* verify by service_key */ + ret = check_pac_checksum(mem_ctx, + modified_pac_blob, srv_sig_ptr, + context, + service_keyblock); if (ret) { - DEBUG(2,("decode_pac_data: Could not parse name from incoming PAC: [%s]: %s\n", - username, error_message(ret))); - nt_status = NT_STATUS_INVALID_PARAMETER; - goto out; + DEBUG(1, ("PAC Decode: Failed to verify the service signature: %s\n", + error_message(ret))); + return NT_STATUS_ACCESS_DENIED; } - if (!smb_krb5_principal_compare_any_realm(context, client_principal, client_principal_pac)) { - DEBUG(2,("decode_pac_data: Name in PAC [%s] does not match principal name in ticket\n", - username)); - nt_status = NT_STATUS_ACCESS_DENIED; - goto out; + /* Convert to NT time, so as not to loose accuracy in comparison */ + unix_to_nt_time(&tgs_authtime_nttime, tgs_authtime); + + if (tgs_authtime_nttime != logon_name->logon_time) { + DEBUG(2, ("PAC Decode: Logon time mismatch between ticket and PAC!\n")); + DEBUG(2, ("PAC Decode: PAC: %s\n", nt_time_string(mem_ctx, logon_name->logon_time))); + DEBUG(2, ("PAC Decode: Ticket: %s\n", nt_time_string(mem_ctx, tgs_authtime_nttime))); + return NT_STATUS_ACCESS_DENIED; } - DEBUG(10,("Successfully validated Kerberos PAC\n")); + ret = smb_krb5_parse_name_norealm(context, logon_name->account_name, + &client_principal_pac); + if (ret) { + DEBUG(2, ("Could not parse name from incoming PAC: [%s]: %s\n", + logon_name->account_name, + error_message(ret))); + return NT_STATUS_INVALID_PARAMETER; + } - dump_pac_logon_info(10, logon_info); + if (!smb_krb5_principal_compare_any_realm(context, client_principal, client_principal_pac)) { + DEBUG(2, ("Name in PAC [%s] does not match principal name in ticket\n", + logon_name->account_name)); + krb5_free_principal(context, client_principal_pac); + return NT_STATUS_ACCESS_DENIED; + } - *pac_data = my_pac; + DEBUG(3,("Found account name from PAC: %s [%s]\n", + logon_info->info3.base.account_name.string, + logon_info->info3.base.full_name.string)); - nt_status = NT_STATUS_OK; + DEBUG(10,("Successfully validated Kerberos PAC\n")); -out: - if (client_principal_pac) { - krb5_free_principal(context, client_principal_pac); + if (DEBUGLEVEL >= 10) { + const char *s; + s = NDR_PRINT_STRUCT_STRING(mem_ctx, PAC_DATA, pac_data); + if (s) { + DEBUGADD(10,("%s\n", s)); + } } - return nt_status; + *pac_data_out = pac_data; + + return NT_STATUS_OK; } - PAC_LOGON_INFO *get_logon_info_from_pac(PAC_DATA *pac_data) +/**************************************************************** +****************************************************************/ + +struct PAC_LOGON_INFO *get_logon_info_from_pac(struct PAC_DATA *pac_data) { - PAC_LOGON_INFO *logon_info = NULL; int i; - + for (i=0; i < pac_data->num_buffers; i++) { - if (pac_data->pac_buffer[i].type != PAC_TYPE_LOGON_INFO) + if (pac_data->buffers[i].type != PAC_TYPE_LOGON_INFO) { continue; + } - logon_info = pac_data->pac_buffer[i].ctr->pac.logon_info; - break; + return pac_data->buffers[i].info->logon_info.info; } - return logon_info; + + return NULL; } /**************************************************************** @@ -971,12 +347,12 @@ NTSTATUS kerberos_return_pac(TALLOC_CTX *mem_ctx, bool request_pac, bool add_netbios_addr, time_t renewable_time, - PAC_DATA **pac_ret) + struct PAC_DATA **pac_ret) { krb5_error_code ret; NTSTATUS status = NT_STATUS_INVALID_PARAMETER; DATA_BLOB tkt, ap_rep, sesskey1, sesskey2; - PAC_DATA *pac_data = NULL; + struct PAC_DATA *pac_data = NULL; char *client_princ_out = NULL; const char *auth_princ = NULL; const char *local_service = NULL; @@ -1110,11 +486,11 @@ static NTSTATUS kerberos_return_pac_logon_info(TALLOC_CTX *mem_ctx, bool request_pac, bool add_netbios_addr, time_t renewable_time, - PAC_LOGON_INFO **logon_info) + struct PAC_LOGON_INFO **logon_info) { NTSTATUS status; - PAC_DATA *pac_data = NULL; - PAC_LOGON_INFO *info = NULL; + struct PAC_DATA *pac_data = NULL; + struct PAC_LOGON_INFO *info = NULL; status = kerberos_return_pac(mem_ctx, name, @@ -1160,10 +536,10 @@ NTSTATUS kerberos_return_info3_from_pac(TALLOC_CTX *mem_ctx, bool request_pac, bool add_netbios_addr, time_t renewable_time, - NET_USER_INFO_3 **info3) + struct netr_SamInfo3 **info3) { NTSTATUS status; - PAC_LOGON_INFO *logon_info = NULL; + struct PAC_LOGON_INFO *logon_info = NULL; status = kerberos_return_pac_logon_info(mem_ctx, name, |