Releasing 1.0.21.

[tinc] / lib / utils.c

diff --git a/lib/utils.c b/lib/utils.c
index 6ea904a..3b221f5 100644 (file)
--- a/lib/utils.c
+++ b/lib/utils.c
@@ -32,11 +32,13 @@ static int charhex2bin(char c) {
                return toupper(c) - 'A' + 10;
 }
 
-
-void hex2bin(char *src, char *dst, int length) {
-       int i;
-       for(i = 0; i < length; i++)
+bool hex2bin(char *src, char *dst, int length) {
+       for(int i = 0; i < length; i++) {
+               if(!isxdigit(src[i * 2]) || !isxdigit(src[i * 2 + 1]))
+                       return false;
                dst[i] = charhex2bin(src[i * 2]) * 16 + charhex2bin(src[i * 2 + 1]);
+       }
+       return true;
 }
 
 void bin2hex(char *src, char *dst, int length) {
@@ -53,15 +55,17 @@ void bin2hex(char *src, char *dst, int length) {
 #endif
 
 const char *winerror(int err) {
-       static char buf[1024], *newline;
+       static char buf[1024], *ptr;
+
+       ptr = buf + sprintf(buf, "(%d) ", err);
 
        if (!FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
-               NULL, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), buf, sizeof(buf), NULL)) {
-               strncpy(buf, "(unable to format errormessage)", sizeof(buf));
+               NULL, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_NEUTRAL), ptr, sizeof(buf) - (ptr - buf), NULL)) {
+               strcpy(ptr, "(unable to format errormessage)");
        };
 
-       if((newline = strchr(buf, '\r')))
-               *newline = '\0';
+       if((ptr = strchr(buf, '\r')))
+               *ptr = '\0';
 
        return buf;
 }