From 8daa83a594a2e98f39d764422bfbdbc62c9efd44 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 19:20:00 +0200 Subject: Adding upstream version 2:4.20.0+dfsg. Signed-off-by: Daniel Baumann --- lib/ldb/common/ldb_utf8.c | 140 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 140 insertions(+) create mode 100644 lib/ldb/common/ldb_utf8.c (limited to 'lib/ldb/common/ldb_utf8.c') diff --git a/lib/ldb/common/ldb_utf8.c b/lib/ldb/common/ldb_utf8.c new file mode 100644 index 0000000..f45b72d --- /dev/null +++ b/lib/ldb/common/ldb_utf8.c @@ -0,0 +1,140 @@ +/* + ldb database library + + Copyright (C) Andrew Tridgell 2004 + + ** NOTE! The following LGPL license applies to the ldb + ** library. This does NOT imply that all of Samba is released + ** under the LGPL + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 3 of the License, or (at your option) any later version. + + This library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, see . +*/ + +/* + * Name: ldb + * + * Component: ldb utf8 handling + * + * Description: case folding and case comparison for UTF8 strings + * + * Author: Andrew Tridgell + */ + +#include "ldb_private.h" +#include "system/locale.h" + + +/* + this allow the user to pass in a caseless comparison + function to handle utf8 caseless comparisons + */ +void ldb_set_utf8_fns(struct ldb_context *ldb, + void *context, + char *(*casefold)(void *, void *, const char *, size_t)) +{ + if (context) + ldb->utf8_fns.context = context; + if (casefold) + ldb->utf8_fns.casefold = casefold; +} + +/* + a simple case folding function + NOTE: does not handle UTF8 +*/ +char *ldb_casefold_default(void *context, TALLOC_CTX *mem_ctx, const char *s, size_t n) +{ + size_t i; + char *ret = talloc_strndup(mem_ctx, s, n); + if (!s) { + errno = ENOMEM; + return NULL; + } + for (i=0;ret[i];i++) { + ret[i] = ldb_ascii_toupper((unsigned char)ret[i]); + } + return ret; +} + +void ldb_set_utf8_default(struct ldb_context *ldb) +{ + ldb_set_utf8_fns(ldb, NULL, ldb_casefold_default); +} + +char *ldb_casefold(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, const char *s, size_t n) +{ + return ldb->utf8_fns.casefold(ldb->utf8_fns.context, mem_ctx, s, n); +} + +/* + check the attribute name is valid according to rfc2251 + returns 1 if the name is ok + */ + +int ldb_valid_attr_name(const char *s) +{ + size_t i; + + if (!s || !s[0]) + return 0; + + /* handle special ldb_tdb wildcard */ + if (strcmp(s, "*") == 0) return 1; + + for (i = 0; s[i]; i++) { + if (! isascii(s[i])) { + return 0; + } + if (i == 0) { /* first char must be an alpha (or our special '@' identifier) */ + if (! (isalpha(s[i]) || (s[i] == '@'))) { + return 0; + } + } else { + if (! (isalnum(s[i]) || (s[i] == '-'))) { + return 0; + } + } + } + return 1; +} + +char *ldb_attr_casefold(TALLOC_CTX *mem_ctx, const char *s) +{ + size_t i; + char *ret = talloc_strdup(mem_ctx, s); + if (!ret) { + errno = ENOMEM; + return NULL; + } + for (i = 0; ret[i]; i++) { + ret[i] = ldb_ascii_toupper((unsigned char)ret[i]); + } + return ret; +} + +/* + we accept either 'dn' or 'distinguishedName' for a distinguishedName +*/ +int ldb_attr_dn(const char *attr) +{ + if (ldb_attr_cmp(attr, "dn") == 0 || + ldb_attr_cmp(attr, "distinguishedName") == 0) { + return 0; + } + return -1; +} + +_PRIVATE_ char ldb_ascii_toupper(char c) { + return ('a' <= c && c <= 'z') ? c ^ 0x20 : toupper(c); +} -- cgit v1.2.3