diff options
author | Gerald Carter <jerry@samba.org> | 2005-09-30 17:13:37 +0000 |
---|---|---|
committer | Gerald (Jerry) Carter <jerry@samba.org> | 2007-10-10 11:04:48 -0500 |
commit | 939c3cb5d78e3a2236209b296aa8aba8bdce32d3 (patch) | |
tree | 5f3a22ba40783ce548328a44b9262a451f33ad27 /source/libads/authdata.c | |
parent | f049fd463b087ccf4873b03675cca5eb8576af2e (diff) | |
download | samba-939c3cb5d78e3a2236209b296aa8aba8bdce32d3.tar.gz samba-939c3cb5d78e3a2236209b296aa8aba8bdce32d3.tar.xz samba-939c3cb5d78e3a2236209b296aa8aba8bdce32d3.zip |
r10656: BIG merge from trunk. Features not copied over
* \PIPE\unixinfo
* winbindd's {group,alias}membership new functions
* winbindd's lookupsids() functionality
* swat (trunk changes to be reverted as per discussion with Deryck)
Diffstat (limited to 'source/libads/authdata.c')
-rw-r--r-- | source/libads/authdata.c | 478 |
1 files changed, 399 insertions, 79 deletions
diff --git a/source/libads/authdata.c b/source/libads/authdata.c index 2cc6c6ebae4..2e7866c0559 100644 --- a/source/libads/authdata.c +++ b/source/libads/authdata.c @@ -2,6 +2,11 @@ Unix SMB/CIFS implementation. kerberos authorization data (PAC) utility library 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 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 @@ -22,27 +27,6 @@ #ifdef HAVE_KRB5 -static DATA_BLOB unwrap_pac(DATA_BLOB *auth_data) -{ - DATA_BLOB pac_contents; - ASN1_DATA data; - int data_type; - - asn1_load(&data, *auth_data); - asn1_start_tag(&data, ASN1_SEQUENCE(0)); - asn1_start_tag(&data, ASN1_SEQUENCE(0)); - asn1_start_tag(&data, ASN1_CONTEXT(0)); - asn1_read_Integer(&data, &data_type); - asn1_end_tag(&data); - asn1_start_tag(&data, ASN1_CONTEXT(1)); - asn1_read_OctetString(&data, &pac_contents); - asn1_end_tag(&data); - asn1_end_tag(&data); - asn1_end_tag(&data); - asn1_free(&data); - return pac_contents; -} - static BOOL pac_io_logon_name(const char *desc, PAC_LOGON_NAME *logon_name, prs_struct *ps, int depth) { @@ -75,6 +59,8 @@ static BOOL pac_io_logon_name(const char *desc, PAC_LOGON_NAME *logon_name, } + +#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) { @@ -159,6 +145,7 @@ static BOOL pac_io_krb_sid_and_attr_array(const char *desc, return True; } +#endif static BOOL pac_io_group_membership(const char *desc, GROUP_MEMBERSHIP *membership, @@ -216,27 +203,34 @@ static BOOL pac_io_group_membership_array(const char *desc, } +#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; + uint32 garbage, i; + if (NULL == info) return False; prs_debug(ps, depth, desc, "pac_io_pac_logon_info"); depth++; - if (!prs_uint32("unknown", ps, depth, &garbage)) + if (!prs_align(ps)) return False; - if (!prs_uint32("unknown", ps, depth, &garbage)) + 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)) + 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)) @@ -270,7 +264,7 @@ static BOOL pac_io_pac_logon_info(const char *desc, PAC_LOGON_INFO *info, if (!prs_uint16("logon_count", ps, depth, &info->logon_count)) return False; - if (!prs_uint16("reserved12", ps, depth, &info->reserved12)) + 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; @@ -287,13 +281,7 @@ static BOOL pac_io_pac_logon_info(const char *desc, PAC_LOGON_INFO *info, if (!prs_uint32("user_flags", ps, depth, &info->user_flags)) return False; - if (!prs_uint32("reserved13.0", ps, depth, &info->reserved13[0])) - return False; - if (!prs_uint32("reserved13.1", ps, depth, &info->reserved13[1])) - return False; - if (!prs_uint32("reserved13.2", ps, depth, &info->reserved13[2])) - return False; - if (!prs_uint32("reserved13.3", ps, depth, &info->reserved13[3])) + if (!prs_uint8s(False, "session_key", ps, depth, info->session_key, 16)) return False; if (!smb_io_unihdr("hdr_dom_controller", @@ -306,30 +294,17 @@ static BOOL pac_io_pac_logon_info(const char *desc, PAC_LOGON_INFO *info, if (!prs_uint32("ptr_dom_sid", ps, depth, &info->ptr_dom_sid)) return False; - if (!prs_uint32("reserved16.0", ps, depth, &info->reserved16[0])) - return False; - if (!prs_uint32("reserved16.1", ps, depth, &info->reserved16[1])) + if (!prs_uint8s(False, "lm_session_key", ps, depth, info->lm_session_key, 8)) return False; - /* might be acb_info */ - if (!prs_uint32("reserved17", ps, depth, &info->reserved17)) + if (!prs_uint32("acct_flags", ps, depth, &info->acct_flags)) return False; - - if (!prs_uint32("reserved18.0", ps, depth, &info->reserved18[0])) - return False; - if (!prs_uint32("reserved18.1", ps, depth, &info->reserved18[1])) - return False; - if (!prs_uint32("reserved18.2", ps, depth, &info->reserved18[2])) - return False; - if (!prs_uint32("reserved18.3", ps, depth, &info->reserved18[3])) - return False; - if (!prs_uint32("reserved18.4", ps, depth, &info->reserved18[4])) - return False; - if (!prs_uint32("reserved18.5", ps, depth, &info->reserved18[5])) - return False; - if (!prs_uint32("reserved18.6", ps, depth, &info->reserved18[6])) - 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; @@ -395,44 +370,109 @@ static BOOL pac_io_pac_logon_info(const char *desc, PAC_LOGON_INFO *info, &info->res_group_dom_sid, ps, depth)) return False; - if (info->ptr_res_groups) + 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; + 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 = length - sizeof(uint32); - if (NULL == data) - return False; - 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 (UNMARSHALLING(ps)) { - data->signature = PRS_ALLOC_MEM(ps, unsigned char, siglen); - if (!data->signature) { + + if (UNMARSHALLING(ps) && length) { + data->signature.buffer = PRS_ALLOC_MEM(ps, uint8, siglen); + if (!data->signature.buffer) { DEBUG(3, ("No memory available\n")); return False; } } - if (!prs_uint8s(False, "signature", ps, depth, data->signature,siglen)) + + 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_INFO_HDR *hdr, +static BOOL pac_io_pac_info_hdr_ctr(const char *desc, PAC_BUFFER *hdr, prs_struct *ps, int depth) { if (NULL == hdr) @@ -445,8 +485,8 @@ static BOOL pac_io_pac_info_hdr_ctr(const char *desc, PAC_INFO_HDR *hdr, return False; if (hdr->offset != prs_offset(ps)) { - DEBUG(5, ("offset in header(x%x) and data(x%x) do not match\n", - 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); } @@ -518,10 +558,15 @@ static BOOL pac_io_pac_info_hdr_ctr(const char *desc, PAC_INFO_HDR *hdr, 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_INFO_HDR *hdr, +static BOOL pac_io_pac_info_hdr(const char *desc, PAC_BUFFER *hdr, prs_struct *ps, int depth) { if (NULL == hdr) @@ -563,19 +608,19 @@ static BOOL pac_io_pac_data(const char *desc, PAC_DATA *data, return False; if (UNMARSHALLING(ps) && data->num_buffers > 0) { - if ((data->pac_info_hdr_ptr = PRS_ALLOC_MEM(ps, PAC_INFO_HDR, data->num_buffers)) == NULL) { + 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_info_hdr_ptr[i], ps, + 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_info_hdr_ptr[i], + if (!pac_io_pac_info_hdr_ctr(desc, &data->pac_buffer[i], ps, depth)) return False; } @@ -583,25 +628,300 @@ static BOOL pac_io_pac_data(const char *desc, PAC_DATA *data, return True; } -PAC_DATA *decode_pac_data(DATA_BLOB *auth_data, TALLOC_CTX *ctx) +static NTSTATUS check_pac_checksum(TALLOC_CTX *mem_ctx, + DATA_BLOB pac_data, + PAC_SIGNATURE_DATA *sig, + krb5_context context, + krb5_keyblock *keyblock) +{ + krb5_error_code ret; + krb5_checksum cksum; + krb5_keyusage usage = 0; + + smb_krb5_checksum_from_pac_sig(&cksum, sig); + +#ifdef HAVE_KRB5_KU_OTHER_CKSUM /* Heimdal */ + usage = KRB5_KU_OTHER_CKSUM; +#elif defined(HAVE_KRB5_KEYUSAGE_APP_DATA_CKSUM) /* MIT */ + usage = KRB5_KEYUSAGE_APP_DATA_CKSUM; +#else +#error UNKNOWN_KRB5_KEYUSAGE +#endif + + ret = smb_krb5_verify_checksum(context, + keyblock, + usage, + &cksum, + pac_data.data, + pac_data.length); + + if (ret) { + DEBUG(2,("check_pac_checksum: PAC Verification failed: %s (%d)\n", + error_message(ret), ret)); + return NT_STATUS_ACCESS_DENIED; + } + + return NT_STATUS_OK; +} + +static NTSTATUS parse_pac_data(TALLOC_CTX *mem_ctx, DATA_BLOB *pac_data_blob, PAC_DATA *pac_data) { - DATA_BLOB pac_data_blob = unwrap_pac(auth_data); prs_struct ps; - PAC_DATA *pac_data; + PAC_DATA *my_pac; - DEBUG(5,("dump_pac_data\n")); - prs_init(&ps, pac_data_blob.length, ctx, UNMARSHALL); - prs_copy_data_in(&ps, (char *)pac_data_blob.data, pac_data_blob.length); - prs_set_offset(&ps, 0); + if (!prs_init(&ps, pac_data_blob->length, mem_ctx, UNMARSHALL)) + return NT_STATUS_NO_MEMORY; - data_blob_free(&pac_data_blob); + 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); - pac_data = TALLOC_ZERO_P(ctx, PAC_DATA); - pac_io_pac_data("pac data", pac_data, &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); - return pac_data; + *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); +} + +/* just for debugging, will be removed later - Guenther */ +static void dump_pac_logon_info(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(10,("The PAC:\n")); + + DEBUGADD(10,("\tUser Flags: 0x%x (%d)\n", user_flgs, user_flgs)); + if (user_flgs & LOGON_EXTRA_SIDS) + DEBUGADD(10,("\tUser Flags: LOGON_EXTRA_SIDS 0x%x (%d)\n", LOGON_EXTRA_SIDS, LOGON_EXTRA_SIDS)); + if (user_flgs & LOGON_RESOURCE_GROUPS) + DEBUGADD(10,("\tUser Flags: LOGON_RESOURCE_GROUPS 0x%x (%d)\n", LOGON_RESOURCE_GROUPS, LOGON_RESOURCE_GROUPS)); + DEBUGADD(10,("\tUser SID: %s-%d\n", sid_string_static(&dom_sid), logon_info->info3.user_rid)); + DEBUGADD(10,("\tGroup SID: %s-%d\n", sid_string_static(&dom_sid), logon_info->info3.group_rid)); + + DEBUGADD(10,("\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(10,("\t\t%d: sid: %s-%d\n\t\t attr: 0x%x == %s\n", + i, sid_string_static(&dom_sid), + logon_info->info3.gids[i].g_rid, + logon_info->info3.gids[i].attr, + attr_string)); + SAFE_FREE(attr_string); + } + + DEBUGADD(10,("\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(10,("\t\t%d: sid: %s\n\t\t attr: 0x%x == %s\n", + i, sid_string_static(&logon_info->info3.other_sids[i].sid), + logon_info->info3.other_sids_attrib[i], + attr_string)); + SAFE_FREE(attr_string); + } + + DEBUGADD(10,("\tGroup Membership (Ressource 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(10,("\t\t%d: sid: %s-%d\n\t\t attr: 0x%x == %s\n", + i, sid_string_static(&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_keyblock *service_keyblock, + krb5_const_principal client_principal, + time_t tgs_authtime, + PAC_DATA **pac_data) + +{ + DATA_BLOB modified_pac_blob; + PAC_DATA *my_pac; + NTSTATUS nt_status; + 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; + NTTIME tgs_authtime_nttime; + int i, srv_sig_pos = 0, kdc_sig_pos = 0; + fstring username; + + *pac_data = NULL; + + my_pac = talloc(mem_ctx, PAC_DATA); + if (!my_pac) { + 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; + } + + modified_pac_blob = data_blob_talloc(mem_ctx, pac_data_blob->data, pac_data_blob->length); + + if (my_pac->num_buffers < 4) { + nt_status = NT_STATUS_INVALID_PARAMETER; + goto out; + } + + /* 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) { + 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); + + break; + + case PAC_TYPE_PRIVSVR_CHECKSUM: + if (!my_pac->pac_buffer[i].ctr->pac.privsrv_cksum) { + 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); + + break; + + case PAC_TYPE_LOGON_NAME: + if (!my_pac->pac_buffer[i].ctr->pac.logon_name) { + break; + } + + logon_name = my_pac->pac_buffer[i].ctr->pac.logon_name; + break; + + case PAC_TYPE_LOGON_INFO: + if (!my_pac->pac_buffer[i].ctr->pac.logon_info) { + break; + } + + logon_info = my_pac->pac_buffer[i].ctr->pac.logon_info; + break; + } + + } + + if (!srv_sig || !kdc_sig || !logon_name || !logon_info) { + nt_status = NT_STATUS_INVALID_PARAMETER; + goto out; + } + + /* 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); + + /* 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; + } + + /* Convert to NT time, so as not to loose accuracy in comparison */ + unix_to_nt_time(&tgs_authtime_nttime, tgs_authtime); + + 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; + } + + if (!logon_name->len) { + DEBUG(2,("decode_pac_data: No Logon Name available\n")); + nt_status = NT_STATUS_INVALID_PARAMETER; + goto out; + } + rpcstr_pull(username, logon_name->username, sizeof(username), -1, STR_TERMINATE); + + ret = smb_krb5_parse_name_norealm(context, username, &client_principal_pac); + 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; + } + + 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; + } + + DEBUG(10,("Successfully validated Kerberos PAC\n")); + + dump_pac_logon_info(logon_info); + + *pac_data = my_pac; + + nt_status = NT_STATUS_OK; + +out: + if (client_principal_pac) { + krb5_free_principal(context, client_principal_pac); + } + + return nt_status; } #endif |