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Cleanup

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This commit is contained in:
Joseph Henry
2018-02-07 15:10:38 -08:00
parent de3fc72ba0
commit b0ac457ff1
3 changed files with 247 additions and 317 deletions
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262
src/Utilities.cpp
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@@ -40,158 +40,158 @@
int inet_pton4(const char *src, void *dst)
{
uint8_t tmp[NS_INADDRSZ], *tp;
uint8_t tmp[NS_INADDRSZ], *tp;
int saw_digit = 0;
int octets = 0;
*(tp = tmp) = 0;
int saw_digit = 0;
int octets = 0;
*(tp = tmp) = 0;
int ch;
while ((ch = *src++) != '\0')
{
if (ch >= '0' && ch <= '9')
{
uint32_t n = *tp * 10 + (ch - '0');
int ch;
while ((ch = *src++) != '\0')
{
if (ch >= '0' && ch <= '9')
{
uint32_t n = *tp * 10 + (ch - '0');
if (saw_digit && *tp == 0)
return 0;
if (saw_digit && *tp == 0)
return 0;
if (n > 255)
return 0;
if (n > 255)
return 0;
*tp = n;
if (!saw_digit)
{
if (++octets > 4)
return 0;
saw_digit = 1;
}
}
else if (ch == '.' && saw_digit)
{
if (octets == 4)
return 0;
*++tp = 0;
saw_digit = 0;
}
else
return 0;
}
if (octets < 4)
return 0;
*tp = n;
if (!saw_digit)
{
if (++octets > 4)
return 0;
saw_digit = 1;
}
}
else if (ch == '.' && saw_digit)
{
if (octets == 4)
return 0;
*++tp = 0;
saw_digit = 0;
}
else
return 0;
}
if (octets < 4)
return 0;
memcpy(dst, tmp, NS_INADDRSZ);
memcpy(dst, tmp, NS_INADDRSZ);
return 1;
return 1;
}
int inet_pton6(const char *src, void *dst)
{
static const char xdigits[] = "0123456789abcdef";
uint8_t tmp[NS_IN6ADDRSZ];
static const char xdigits[] = "0123456789abcdef";
uint8_t tmp[NS_IN6ADDRSZ];
uint8_t *tp = (uint8_t*) memset(tmp, '\0', NS_IN6ADDRSZ);
uint8_t *endp = tp + NS_IN6ADDRSZ;
uint8_t *colonp = NULL;
uint8_t *tp = (uint8_t*) memset(tmp, '\0', NS_IN6ADDRSZ);
uint8_t *endp = tp + NS_IN6ADDRSZ;
uint8_t *colonp = NULL;
/* Leading :: requires some special handling. */
if (*src == ':')
{
if (*++src != ':')
return 0;
}
/* Leading :: requires some special handling. */
if (*src == ':')
{
if (*++src != ':')
return 0;
}
const char *curtok = src;
int saw_xdigit = 0;
uint32_t val = 0;
int ch;
while ((ch = tolower(*src++)) != '\0')
{
const char *pch = strchr(xdigits, ch);
if (pch != NULL)
{
val <<= 4;
val |= (pch - xdigits);
if (val > 0xffff)
return 0;
saw_xdigit = 1;
continue;
}
if (ch == ':')
{
curtok = src;
if (!saw_xdigit)
{
if (colonp)
return 0;
colonp = tp;
continue;
}
else if (*src == '\0')
{
return 0;
}
if (tp + NS_INT16SZ > endp)
return 0;
*tp++ = (uint8_t) (val >> 8) & 0xff;
*tp++ = (uint8_t) val & 0xff;
saw_xdigit = 0;
val = 0;
continue;
}
if (ch == '.' && ((tp + NS_INADDRSZ) <= endp) &&
inet_pton4(curtok, (char*) tp) > 0)
{
tp += NS_INADDRSZ;
saw_xdigit = 0;
break; /* '\0' was seen by inet_pton4(). */
}
return 0;
}
if (saw_xdigit)
{
if (tp + NS_INT16SZ > endp)
return 0;
*tp++ = (uint8_t) (val >> 8) & 0xff;
*tp++ = (uint8_t) val & 0xff;
}
if (colonp != NULL)
{
/*
* Since some memmove()'s erroneously fail to handle
* overlapping regions, we'll do the shift by hand.
*/
const int n = tp - colonp;
const char *curtok = src;
int saw_xdigit = 0;
uint32_t val = 0;
int ch;
while ((ch = tolower(*src++)) != '\0')
{
const char *pch = strchr(xdigits, ch);
if (pch != NULL)
{
val <<= 4;
val |= (pch - xdigits);
if (val > 0xffff)
return 0;
saw_xdigit = 1;
continue;
}
if (ch == ':')
{
curtok = src;
if (!saw_xdigit)
{
if (colonp)
return 0;
colonp = tp;
continue;
}
else if (*src == '\0')
{
return 0;
}
if (tp + NS_INT16SZ > endp)
return 0;
*tp++ = (uint8_t) (val >> 8) & 0xff;
*tp++ = (uint8_t) val & 0xff;
saw_xdigit = 0;
val = 0;
continue;
}
if (ch == '.' && ((tp + NS_INADDRSZ) <= endp) &&
inet_pton4(curtok, (char*) tp) > 0)
{
tp += NS_INADDRSZ;
saw_xdigit = 0;
break; /* '\0' was seen by inet_pton4(). */
}
return 0;
}
if (saw_xdigit)
{
if (tp + NS_INT16SZ > endp)
return 0;
*tp++ = (uint8_t) (val >> 8) & 0xff;
*tp++ = (uint8_t) val & 0xff;
}
if (colonp != NULL)
{
/*
* Since some memmove()'s erroneously fail to handle
* overlapping regions, we'll do the shift by hand.
*/
const int n = tp - colonp;
if (tp == endp)
return 0;
if (tp == endp)
return 0;
for (int i = 1; i <= n; i++)
{
endp[-i] = colonp[n - i];
colonp[n - i] = 0;
}
tp = endp;
}
if (tp != endp)
return 0;
for (int i = 1; i <= n; i++)
{
endp[-i] = colonp[n - i];
colonp[n - i] = 0;
}
tp = endp;
}
if (tp != endp)
return 0;
memcpy(dst, tmp, NS_IN6ADDRSZ);
memcpy(dst, tmp, NS_IN6ADDRSZ);
return 1;
return 1;
}
int inet_pton(int af, const char *src, void *dst)
{
switch (af)
{
case AF_INET:
return inet_pton4(src, dst);
case AF_INET6:
return inet_pton6(src, dst);
default:
return -1;
}
switch (af)
{
case AF_INET:
return inet_pton4(src, dst);
case AF_INET6:
return inet_pton6(src, dst);
default:
return -1;
}
}
#endif
@@ -254,5 +254,5 @@ char *beautify_eth_proto_nums(int proto)
void mac2str(char *macbuf, int len, unsigned char* addr)
{
snprintf(macbuf, len, "%02x:%02x:%02x:%02x:%02x:%02x",
addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
}