svn commit: samba r7515 - in branches/SAMBA_4_0/source/lib/ldb: common include

[tridge at samba.org]

Author: tridge
Date: 2005-06-13 05:33:55 +0000 (Mon, 13 Jun 2005)
New Revision: 7515

WebSVN: http://websvn.samba.org/cgi-bin/viewcvs.cgi?view=rev&root=samba&rev=7515

Log:
merge in the binary encode/decode enhancements from the libcli/ldap/
code into the ldb parse code

Modified:
   branches/SAMBA_4_0/source/lib/ldb/common/ldb_parse.c
   branches/SAMBA_4_0/source/lib/ldb/include/ldb_parse.h


Changeset:
Modified: branches/SAMBA_4_0/source/lib/ldb/common/ldb_parse.c
===================================================================
--- branches/SAMBA_4_0/source/lib/ldb/common/ldb_parse.c	2005-06-13 05:18:17 UTC (rev 7514)
+++ branches/SAMBA_4_0/source/lib/ldb/common/ldb_parse.c	2005-06-13 05:33:55 UTC (rev 7515)
@@ -126,7 +126,74 @@
 	return s;
 }
 
+/*
+   decode a RFC2254 binary string representation of a buffer.
+   Used in LDAP filters.
+*/
+struct ldb_val ldb_binary_decode(TALLOC_CTX *ctx, const char *str)
+{
+	int i, j;
+	struct ldb_val ret;
+	int slen = strlen(str);
 
+	ret.data = talloc_size(ctx, slen);
+	ret.length = 0;
+	if (ret.data == NULL) return ret;
+
+	for (i=j=0;i<slen;i++) {
+		if (str[i] == '\\') {
+			unsigned c;
+			if (sscanf(&str[i+1], "%02X", &c) != 1) {
+				talloc_free(ret.data);
+				memset(&ret, 0, sizeof(ret));
+				return ret;
+			}
+			((uint8_t *)ret.data)[j++] = c;
+			i += 2;
+		} else {
+			((uint8_t *)ret.data)[j++] = str[i];
+		}
+	}
+	ret.length = j;
+
+	return ret;
+}
+
+
+/*
+   encode a blob as a RFC2254 binary string, escaping any
+   non-printable or '\' characters
+*/
+const char *ldb_binary_encode(TALLOC_CTX *ctx, struct ldb_val val)
+{
+	int i;
+	char *ret;
+	int len = val.length;
+	unsigned char *buf = val.data;
+
+	for (i=0;i<val.length;i++) {
+		if (!isprint(buf[i]) || strchr(" *()\\&|!", buf[i])) {
+			len += 2;
+		}
+	}
+	ret = talloc_array(ctx, char, len+1);
+	if (ret == NULL) return NULL;
+
+	len = 0;
+	for (i=0;i<val.length;i++) {
+		if (!isprint(buf[i]) || strchr(" *()\\&|!", buf[i])) {
+			snprintf(ret+len, 4, "\\%02X", buf[i]);
+			len += 3;
+		} else {
+			ret[len++] = buf[i];
+		}
+	}
+
+	ret[len] = 0;
+
+	return ret;	
+}
+
 static struct ldb_parse_tree *ldb_parse_filter(TALLOC_CTX *ctx, const char **s);
 
 /*
@@ -169,8 +236,7 @@
 	
 	ret->operation = LDB_OP_SIMPLE;
 	ret->u.simple.attr = l;
-	ret->u.simple.value.data = val?val:discard_const_p(char, "");
-	ret->u.simple.value.length = val?strlen(val):0;
+	ret->u.simple.value = ldb_binary_decode(ret, val);
 
 	return ret;
 }

Modified: branches/SAMBA_4_0/source/lib/ldb/include/ldb_parse.h
===================================================================
--- branches/SAMBA_4_0/source/lib/ldb/include/ldb_parse.h	2005-06-13 05:18:17 UTC (rev 7514)
+++ branches/SAMBA_4_0/source/lib/ldb/include/ldb_parse.h	2005-06-13 05:33:55 UTC (rev 7515)
@@ -55,5 +55,6 @@
 };
 
 struct ldb_parse_tree *ldb_parse_tree(TALLOC_CTX *mem_ctx, const char *s);
+const char *ldb_binary_encode(TALLOC_CTX *ctx, struct ldb_val val);
 
 #endif