diff options
Diffstat (limited to 'source4/lib/ldb/common/ldb_parse.c')
| -rw-r--r-- | source4/lib/ldb/common/ldb_parse.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/source4/lib/ldb/common/ldb_parse.c b/source4/lib/ldb/common/ldb_parse.c index a5aa28bb5a..6d43000dbc 100644 --- a/source4/lib/ldb/common/ldb_parse.c +++ b/source4/lib/ldb/common/ldb_parse.c @@ -43,6 +43,26 @@ #include "ldb_private.h" #include "system/locale.h" +static int ldb_parse_hex2char(const char *x) +{ + if (isxdigit(x[0]) && isxdigit(x[1])) { + const char h1 = x[0], h2 = x[1]; + int c; + + if (h1 >= 'a') c = h1 - (int)'a' + 10; + else if (h1 >= 'A') c = h1 - (int)'A' + 10; + else if (h1 >= '0') c = h1 - (int)'0'; + c = c << 4; + if (h2 >= 'a') c += h2 - (int)'a' + 10; + else if (h1 >= 'A') c += h2 - (int)'A' + 10; + else if (h1 >= '0') c += h2 - (int)'0'; + + return c; + } + + return -1; +} + /* a filter is defined by: <filter> ::= '(' <filtercomp> ')' @@ -71,8 +91,10 @@ struct ldb_val ldb_binary_decode(void *mem_ctx, const char *str) for (i=j=0;i<slen;i++) { if (str[i] == '\\') { - unsigned c; - if (sscanf(&str[i+1], "%02X", &c) != 1) { + int c; + + c = ldb_parse_hex2char(&str[i+1]); + if (c == -1) { talloc_free(ret.data); memset(&ret, 0, sizeof(ret)); return ret; |