int
rf_htoi(char *p)
{
int val = 0;
for (; ISHEXCHAR(*p); p++)
val = 16 * val + HC2INT(*p);
return (val);
}
// Decode Q encoding (RFC 2047).
// static
char *DecodeQ(const char *in, PRUint32 length)
{
char *out, *dest = 0;
out = dest = (char *)PR_Calloc(length + 1, sizeof(char));
if (dest == nsnull)
return nsnull;
while (length > 0) {
PRUintn c = 0;
switch (*in) {
case '=':
// check if |in| in the form of '=hh' where h is [0-9a-fA-F].
if (length < 3 || !ISHEXCHAR(in[1]) || !ISHEXCHAR(in[2]))
goto badsyntax;
PR_sscanf(in + 1, "%2X", &c);
*out++ = (char) c;
in += 3;
length -= 3;
break;
case '_':
*out++ = ' ';
in++;
length--;
break;
default:
if (*in & 0x80) goto badsyntax;
*out++ = *in++;
length--;
}
}
*out++ = '\0';
for (out = dest; *out ; ++out) {
if (*out == '\t')
*out = ' ';
}
return dest;
badsyntax:
PR_Free(dest);
return nsnull;
}
int hex2bin2(const char *hex, unsigned char *buf, size_t *len)
{
size_t count = 0;
char debugString[2048];
while (*hex != '\0' && count < *len)
{
// skip all that is not a hex char
while (!ISHEXCHAR(*hex) && *hex != '\0')
hex++;
if (*hex == '\0')
break;
// The nex char should be a hex char too
if (ISHEXCHAR(hex[1]))
buf[count++] = (unsigned char)(16 * hexchar2bin(*hex) + hexchar2bin(hex[1]));
else
{
printf("ERR: invalid input in hex string: expected a hex char after '%c'\n", *hex);
sprintf_s(debugString, 2047, "ERR: invalid input in hex string: expected a hex char after '%c'\n", *hex);
DebugMessage(debugString);
return -1;
}
hex += 2;
}
if (count >= *len)
{
printf("ERR: hex string too large (should be max %d bytes\n", (int) *len);
sprintf_s(debugString, 2047, "ERR: hex string too large (should be max %d bytes\n", *len);
DebugMessage(debugString);
return -1;
}
*len = count;
return 0;
}