diff options
Diffstat (limited to '')
| -rw-r--r-- | libcli/security/security_token.c | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/libcli/security/security_token.c b/libcli/security/security_token.c new file mode 100644 index 0000000..79de6e3 --- /dev/null +++ b/libcli/security/security_token.c @@ -0,0 +1,228 @@ +/* + Unix SMB/CIFS implementation. + + security descriptor utility functions + + Copyright (C) Andrew Tridgell 2004 + Copyright (C) Andrew Bartlett 2010 + Copyright (C) Stefan Metzmacher 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 + 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/>. +*/ + +#include "replace.h" +#include <talloc.h> +#include "lib/util/talloc_stack.h" +#include "lib/util/debug.h" +#include "lib/util/fault.h" +#include "libcli/security/security_token.h" +#include "libcli/security/dom_sid.h" +#include "libcli/security/privileges.h" +#include "librpc/gen_ndr/ndr_security.h" +#include "lib/util/talloc_stack.h" + +/* + return a blank security token +*/ +struct security_token *security_token_initialise(TALLOC_CTX *mem_ctx, + enum claims_evaluation_control evaluate_claims) +{ + struct security_token *st = talloc_zero( + mem_ctx, struct security_token); + st->evaluate_claims = evaluate_claims; + + return st; +} + +/**************************************************************************** + Duplicate a SID token. +****************************************************************************/ + +struct security_token *security_token_duplicate(TALLOC_CTX *mem_ctx, const struct security_token *src) +{ + TALLOC_CTX *frame = NULL; + struct security_token *dst = NULL; + DATA_BLOB blob; + enum ndr_err_code ndr_err; + + if (src == NULL) { + return NULL; + } + + frame = talloc_stackframe(); + + ndr_err = ndr_push_struct_blob( + &blob, + frame, + src, + (ndr_push_flags_fn_t)ndr_push_security_token); + if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) { + DBG_ERR("Failed to duplicate security_token ndr_push_security_token failed: %s\n", + ndr_errstr(ndr_err)); + TALLOC_FREE(frame); + return NULL; + } + + dst = talloc_zero(mem_ctx, struct security_token); + if (dst == NULL) { + DBG_ERR("talloc failed\n"); + TALLOC_FREE(frame); + return NULL; + } + + ndr_err = ndr_pull_struct_blob( + &blob, + dst, + dst, + (ndr_pull_flags_fn_t)ndr_pull_security_token); + + if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) { + DBG_ERR("Failed to duplicate security_token ndr_pull_security_token " + "failed: %s\n", + ndr_errstr(ndr_err)); + TALLOC_FREE(dst); + TALLOC_FREE(frame); + return NULL; + } + + TALLOC_FREE(frame); + return dst; +} + +/**************************************************************************** + prints a struct security_token to debug output. +****************************************************************************/ +void security_token_debug(int dbg_class, int dbg_lev, const struct security_token *token) +{ + TALLOC_CTX *frame = talloc_stackframe(); + char *sids = NULL; + char *privs = NULL; + uint32_t i; + + if (!token) { + DEBUGC(dbg_class, dbg_lev, ("Security token: (NULL)\n")); + TALLOC_FREE(frame); + return; + } + + sids = talloc_asprintf(frame, + "Security token SIDs (%" PRIu32 "):\n", + token->num_sids); + for (i = 0; i < token->num_sids; i++) { + struct dom_sid_buf sidbuf; + talloc_asprintf_addbuf( + &sids, + " SID[%3" PRIu32 "]: %s\n", + i, + dom_sid_str_buf(&token->sids[i], &sidbuf)); + } + + privs = security_token_debug_privileges(frame, token); + + DEBUGC(dbg_class, + dbg_lev, + ("%s%s", sids ? sids : "(NULL)", privs ? privs : "(NULL)")); + + TALLOC_FREE(frame); +} + +/* These really should be cheaper... */ + +bool security_token_is_sid(const struct security_token *token, const struct dom_sid *sid) +{ + bool ret; + + if (token->sids == NULL) { + return false; + } + ret = dom_sid_equal(&token->sids[PRIMARY_USER_SID_INDEX], sid); + return ret; +} + +bool security_token_is_system(const struct security_token *token) +{ + return security_token_is_sid(token, &global_sid_System); +} + +bool security_token_is_anonymous(const struct security_token *token) +{ + return security_token_is_sid(token, &global_sid_Anonymous); +} + +bool security_token_has_sid(const struct security_token *token, const struct dom_sid *sid) +{ + uint32_t i; + for (i = 0; i < token->num_sids; i++) { + if (dom_sid_equal(&token->sids[i], sid)) { + return true; + } + } + return false; +} + +size_t security_token_count_flag_sids(const struct security_token *token, + const struct dom_sid *prefix_sid, + size_t num_flags, + const struct dom_sid **_flag_sid) +{ + const size_t num_auths_expected = prefix_sid->num_auths + num_flags; + const struct dom_sid *found = NULL; + size_t num = 0; + uint32_t i; + + SMB_ASSERT(num_auths_expected <= ARRAY_SIZE(prefix_sid->sub_auths)); + + for (i = 0; i < token->num_sids; i++) { + const struct dom_sid *sid = &token->sids[i]; + int cmp; + + if (sid->num_auths != num_auths_expected) { + continue; + } + + cmp = dom_sid_compare_domain(sid, prefix_sid); + if (cmp != 0) { + continue; + } + + num += 1; + found = sid; + } + + if ((num == 1) && (_flag_sid != NULL)) { + *_flag_sid = found; + } + + return num; +} + +bool security_token_has_builtin_guests(const struct security_token *token) +{ + return security_token_has_sid(token, &global_sid_Builtin_Guests); +} + +bool security_token_has_builtin_administrators(const struct security_token *token) +{ + return security_token_has_sid(token, &global_sid_Builtin_Administrators); +} + +bool security_token_has_nt_authenticated_users(const struct security_token *token) +{ + return security_token_has_sid(token, &global_sid_Authenticated_Users); +} + +bool security_token_has_enterprise_dcs(const struct security_token *token) +{ + return security_token_has_sid(token, &global_sid_Enterprise_DCs); +} |