mirror of
https://github.com/moparisthebest/curl
synced 2024-12-21 23:58:49 -05:00
indented source to look more like other ares code,
added (somewhat ugly) typecasts to build warning-free on 64bit platforms (the result of a (char *) - (char *) cannot be stored in an int universally)
This commit is contained in:
Daniel Stenberg
parent
e78ddf0a95
commit
b3a8f438fc
@ -54,380 +54,386 @@
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/*
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/*
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* static int
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* static int
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* inet_net_pton_ipv4(src, dst, size)
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* inet_net_pton_ipv4(src, dst, size)
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* convert IPv4 network number from presentation to network format.
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* convert IPv4 network number from presentation to network format.
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* accepts hex octets, hex strings, decimal octets, and /CIDR.
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* accepts hex octets, hex strings, decimal octets, and /CIDR.
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* "size" is in bytes and describes "dst".
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* "size" is in bytes and describes "dst".
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* return:
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* return:
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* number of bits, either imputed classfully or specified with /CIDR,
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* number of bits, either imputed classfully or specified with /CIDR,
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* or -1 if some failure occurred (check errno). ENOENT means it was
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* or -1 if some failure occurred (check errno). ENOENT means it was
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* not an IPv4 network specification.
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* not an IPv4 network specification.
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* note:
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* note:
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* network byte order assumed. this means 192.5.5.240/28 has
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* network byte order assumed. this means 192.5.5.240/28 has
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* 0b11110000 in its fourth octet.
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* 0b11110000 in its fourth octet.
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* author:
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* author:
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* Paul Vixie (ISC), June 1996
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* Paul Vixie (ISC), June 1996
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*/
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*/
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static int
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static int
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inet_net_pton_ipv4(const char *src, unsigned char *dst, size_t size) {
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inet_net_pton_ipv4(const char *src, unsigned char *dst, size_t size)
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static const char xdigits[] = "0123456789abcdef";
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{
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static const char digits[] = "0123456789";
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static const char xdigits[] = "0123456789abcdef";
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int n, ch, tmp = 0, dirty, bits;
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static const char digits[] = "0123456789";
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const unsigned char *odst = dst;
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int n, ch, tmp = 0, dirty, bits;
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const unsigned char *odst = dst;
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ch = *src++;
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ch = *src++;
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if (ch == '0' && (src[0] == 'x' || src[0] == 'X')
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if (ch == '0' && (src[0] == 'x' || src[0] == 'X')
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&& isascii((unsigned char)(src[1]))
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&& isascii((unsigned char)(src[1]))
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&& isxdigit((unsigned char)(src[1]))) {
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&& isxdigit((unsigned char)(src[1]))) {
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/* Hexadecimal: Eat nybble string. */
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/* Hexadecimal: Eat nybble string. */
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if (size <= 0U)
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if (size <= 0U)
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goto emsgsize;
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goto emsgsize;
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dirty = 0;
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dirty = 0;
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src++; /* skip x or X. */
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src++; /* skip x or X. */
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while ((ch = *src++) != '\0' && isascii(ch) && isxdigit(ch)) {
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while ((ch = *src++) != '\0' && isascii(ch) && isxdigit(ch)) {
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if (isupper(ch))
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if (isupper(ch))
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ch = tolower(ch);
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ch = tolower(ch);
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n = strchr(xdigits, ch) - xdigits;
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n = (int)(strchr(xdigits, ch) - xdigits);
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if (dirty == 0)
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if (dirty == 0)
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tmp = n;
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tmp = n;
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else
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else
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tmp = (tmp << 4) | n;
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tmp = (tmp << 4) | n;
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if (++dirty == 2) {
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if (++dirty == 2) {
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if (size-- <= 0U)
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if (size-- <= 0U)
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goto emsgsize;
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goto emsgsize;
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*dst++ = (unsigned char) tmp;
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*dst++ = (unsigned char) tmp;
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dirty = 0;
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dirty = 0;
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}
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}
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}
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}
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if (dirty) { /* Odd trailing nybble? */
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if (dirty) { /* Odd trailing nybble? */
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if (size-- <= 0U)
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if (size-- <= 0U)
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goto emsgsize;
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goto emsgsize;
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*dst++ = (unsigned char) (tmp << 4);
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*dst++ = (unsigned char) (tmp << 4);
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}
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}
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} else if (isascii(ch) && isdigit(ch)) {
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} else if (isascii(ch) && isdigit(ch)) {
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/* Decimal: eat dotted digit string. */
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/* Decimal: eat dotted digit string. */
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for (;;) {
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for (;;) {
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tmp = 0;
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tmp = 0;
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do {
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do {
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n = strchr(digits, ch) - digits;
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n = (int)(strchr(digits, ch) - digits);
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tmp *= 10;
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tmp *= 10;
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tmp += n;
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tmp += n;
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if (tmp > 255)
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if (tmp > 255)
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goto enoent;
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goto enoent;
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} while ((ch = *src++) != '\0' &&
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} while ((ch = *src++) != '\0' &&
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isascii(ch) && isdigit(ch));
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isascii(ch) && isdigit(ch));
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if (size-- <= 0U)
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if (size-- <= 0U)
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goto emsgsize;
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goto emsgsize;
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*dst++ = (unsigned char) tmp;
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*dst++ = (unsigned char) tmp;
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if (ch == '\0' || ch == '/')
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if (ch == '\0' || ch == '/')
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break;
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break;
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if (ch != '.')
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if (ch != '.')
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goto enoent;
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goto enoent;
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ch = *src++;
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ch = *src++;
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if (!isascii(ch) || !isdigit(ch))
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if (!isascii(ch) || !isdigit(ch))
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goto enoent;
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goto enoent;
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}
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}
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} else
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} else
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goto enoent;
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goto enoent;
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bits = -1;
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bits = -1;
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if (ch == '/' && isascii((unsigned char)(src[0])) &&
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if (ch == '/' && isascii((unsigned char)(src[0])) &&
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isdigit((unsigned char)(src[0])) && dst > odst) {
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isdigit((unsigned char)(src[0])) && dst > odst) {
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/* CIDR width specifier. Nothing can follow it. */
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/* CIDR width specifier. Nothing can follow it. */
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ch = *src++; /* Skip over the /. */
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ch = *src++; /* Skip over the /. */
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bits = 0;
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bits = 0;
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do {
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do {
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n = strchr(digits, ch) - digits;
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n = (int)(strchr(digits, ch) - digits);
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bits *= 10;
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bits *= 10;
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bits += n;
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bits += n;
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} while ((ch = *src++) != '\0' && isascii(ch) && isdigit(ch));
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} while ((ch = *src++) != '\0' && isascii(ch) && isdigit(ch));
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if (ch != '\0')
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if (ch != '\0')
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goto enoent;
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goto enoent;
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if (bits > 32)
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if (bits > 32)
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goto emsgsize;
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goto emsgsize;
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}
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}
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/* Firey death and destruction unless we prefetched EOS. */
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/* Firey death and destruction unless we prefetched EOS. */
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if (ch != '\0')
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if (ch != '\0')
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goto enoent;
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goto enoent;
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/* If nothing was written to the destination, we found no address. */
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/* If nothing was written to the destination, we found no address. */
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if (dst == odst)
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if (dst == odst)
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goto enoent;
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goto enoent;
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/* If no CIDR spec was given, infer width from net class. */
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/* If no CIDR spec was given, infer width from net class. */
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if (bits == -1) {
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if (bits == -1) {
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if (*odst >= 240) /* Class E */
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if (*odst >= 240) /* Class E */
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bits = 32;
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bits = 32;
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else if (*odst >= 224) /* Class D */
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else if (*odst >= 224) /* Class D */
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bits = 8;
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bits = 8;
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else if (*odst >= 192) /* Class C */
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else if (*odst >= 192) /* Class C */
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bits = 24;
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bits = 24;
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else if (*odst >= 128) /* Class B */
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else if (*odst >= 128) /* Class B */
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bits = 16;
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bits = 16;
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else /* Class A */
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else /* Class A */
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bits = 8;
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bits = 8;
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/* If imputed mask is narrower than specified octets, widen. */
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/* If imputed mask is narrower than specified octets, widen. */
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if (bits < ((dst - odst) * 8))
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if (bits < ((dst - odst) * 8))
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bits = (dst - odst) * 8;
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bits = (int)(dst - odst) * 8;
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/*
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/*
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* If there are no additional bits specified for a class D
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* If there are no additional bits specified for a class D
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* address adjust bits to 4.
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* address adjust bits to 4.
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*/
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*/
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if (bits == 8 && *odst == 224)
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if (bits == 8 && *odst == 224)
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bits = 4;
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bits = 4;
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}
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}
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/* Extend network to cover the actual mask. */
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/* Extend network to cover the actual mask. */
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while (bits > ((dst - odst) * 8)) {
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while (bits > ((dst - odst) * 8)) {
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if (size-- <= 0U)
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if (size-- <= 0U)
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goto emsgsize;
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goto emsgsize;
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*dst++ = '\0';
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*dst++ = '\0';
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}
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}
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return (bits);
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return (bits);
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enoent:
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enoent:
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errno = ENOENT;
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errno = ENOENT;
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return (-1);
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return (-1);
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emsgsize:
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emsgsize:
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errno = EMSGSIZE;
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errno = EMSGSIZE;
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return (-1);
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return (-1);
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}
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}
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static int
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static int
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getbits(const char *src, int *bitsp) {
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getbits(const char *src, int *bitsp)
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static const char digits[] = "0123456789";
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{
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int n;
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static const char digits[] = "0123456789";
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int val;
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int n;
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char ch;
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int val;
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char ch;
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val = 0;
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val = 0;
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n = 0;
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n = 0;
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while ((ch = *src++) != '\0') {
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while ((ch = *src++) != '\0') {
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const char *pch;
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const char *pch;
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pch = strchr(digits, ch);
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pch = strchr(digits, ch);
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if (pch != NULL) {
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if (pch != NULL) {
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if (n++ != 0 && val == 0) /* no leading zeros */
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if (n++ != 0 && val == 0) /* no leading zeros */
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return (0);
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return (0);
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val *= 10;
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val *= 10;
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val += (pch - digits);
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val += (pch - digits);
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if (val > 128) /* range */
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if (val > 128) /* range */
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return (0);
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return (0);
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continue;
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continue;
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}
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}
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return (0);
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return (0);
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}
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}
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if (n == 0)
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if (n == 0)
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return (0);
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return (0);
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*bitsp = val;
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*bitsp = val;
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return (1);
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return (1);
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}
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}
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static int
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static int
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getv4(const char *src, unsigned char *dst, int *bitsp) {
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getv4(const char *src, unsigned char *dst, int *bitsp)
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static const char digits[] = "0123456789";
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{
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unsigned char *odst = dst;
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static const char digits[] = "0123456789";
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int n;
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unsigned char *odst = dst;
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unsigned int val;
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int n;
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char ch;
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unsigned int val;
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char ch;
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val = 0;
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val = 0;
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n = 0;
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n = 0;
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while ((ch = *src++) != '\0') {
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while ((ch = *src++) != '\0') {
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const char *pch;
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const char *pch;
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pch = strchr(digits, ch);
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pch = strchr(digits, ch);
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if (pch != NULL) {
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if (pch != NULL) {
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if (n++ != 0 && val == 0) /* no leading zeros */
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if (n++ != 0 && val == 0) /* no leading zeros */
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return (0);
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return (0);
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val *= 10;
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val *= 10;
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val += (pch - digits);
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val += (pch - digits);
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if (val > 255) /* range */
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if (val > 255) /* range */
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return (0);
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return (0);
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continue;
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continue;
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}
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}
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if (ch == '.' || ch == '/') {
|
if (ch == '.' || ch == '/') {
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if (dst - odst > 3) /* too many octets? */
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if (dst - odst > 3) /* too many octets? */
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return (0);
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return (0);
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*dst++ = val;
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*dst++ = val;
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if (ch == '/')
|
if (ch == '/')
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return (getbits(src, bitsp));
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return (getbits(src, bitsp));
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val = 0;
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val = 0;
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n = 0;
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n = 0;
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continue;
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continue;
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}
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}
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return (0);
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return (0);
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}
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}
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if (n == 0)
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if (n == 0)
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return (0);
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return (0);
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||||||
if (dst - odst > 3) /* too many octets? */
|
if (dst - odst > 3) /* too many octets? */
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return (0);
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return (0);
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*dst++ = val;
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*dst++ = val;
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return (1);
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return (1);
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}
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}
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|
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||||||
static int
|
static int
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||||||
inet_net_pton_ipv6(const char *src, unsigned char *dst, size_t size) {
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inet_net_pton_ipv6(const char *src, unsigned char *dst, size_t size)
|
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static const char xdigits_l[] = "0123456789abcdef",
|
{
|
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xdigits_u[] = "0123456789ABCDEF";
|
static const char xdigits_l[] = "0123456789abcdef",
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unsigned char tmp[NS_IN6ADDRSZ], *tp, *endp, *colonp;
|
xdigits_u[] = "0123456789ABCDEF";
|
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const char *xdigits, *curtok;
|
unsigned char tmp[NS_IN6ADDRSZ], *tp, *endp, *colonp;
|
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int ch, saw_xdigit;
|
const char *xdigits, *curtok;
|
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unsigned int val;
|
int ch, saw_xdigit;
|
||||||
int digits;
|
unsigned int val;
|
||||||
int bits;
|
int digits;
|
||||||
size_t bytes;
|
int bits;
|
||||||
int words;
|
size_t bytes;
|
||||||
int ipv4;
|
int words;
|
||||||
|
int ipv4;
|
||||||
|
|
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memset((tp = tmp), '\0', NS_IN6ADDRSZ);
|
memset((tp = tmp), '\0', NS_IN6ADDRSZ);
|
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endp = tp + NS_IN6ADDRSZ;
|
endp = tp + NS_IN6ADDRSZ;
|
||||||
colonp = NULL;
|
colonp = NULL;
|
||||||
/* Leading :: requires some special handling. */
|
/* Leading :: requires some special handling. */
|
||||||
if (*src == ':')
|
if (*src == ':')
|
||||||
if (*++src != ':')
|
if (*++src != ':')
|
||||||
goto enoent;
|
goto enoent;
|
||||||
curtok = src;
|
curtok = src;
|
||||||
saw_xdigit = 0;
|
saw_xdigit = 0;
|
||||||
val = 0;
|
val = 0;
|
||||||
digits = 0;
|
digits = 0;
|
||||||
bits = -1;
|
bits = -1;
|
||||||
ipv4 = 0;
|
ipv4 = 0;
|
||||||
while ((ch = *src++) != '\0') {
|
while ((ch = *src++) != '\0') {
|
||||||
const char *pch;
|
const char *pch;
|
||||||
|
|
||||||
if ((pch = strchr((xdigits = xdigits_l), ch)) == NULL)
|
if ((pch = strchr((xdigits = xdigits_l), ch)) == NULL)
|
||||||
pch = strchr((xdigits = xdigits_u), ch);
|
pch = strchr((xdigits = xdigits_u), ch);
|
||||||
if (pch != NULL) {
|
if (pch != NULL) {
|
||||||
val <<= 4;
|
val <<= 4;
|
||||||
val |= (pch - xdigits);
|
val |= (pch - xdigits);
|
||||||
if (++digits > 4)
|
if (++digits > 4)
|
||||||
goto enoent;
|
goto enoent;
|
||||||
saw_xdigit = 1;
|
saw_xdigit = 1;
|
||||||
continue;
|
continue;
|
||||||
}
|
}
|
||||||
if (ch == ':') {
|
if (ch == ':') {
|
||||||
curtok = src;
|
curtok = src;
|
||||||
if (!saw_xdigit) {
|
if (!saw_xdigit) {
|
||||||
if (colonp)
|
if (colonp)
|
||||||
goto enoent;
|
goto enoent;
|
||||||
colonp = tp;
|
colonp = tp;
|
||||||
continue;
|
continue;
|
||||||
} else if (*src == '\0')
|
} else if (*src == '\0')
|
||||||
goto enoent;
|
goto enoent;
|
||||||
if (tp + NS_INT16SZ > endp)
|
if (tp + NS_INT16SZ > endp)
|
||||||
return (0);
|
return (0);
|
||||||
*tp++ = (unsigned char) (val >> 8) & 0xff;
|
*tp++ = (unsigned char) (val >> 8) & 0xff;
|
||||||
*tp++ = (unsigned char) val & 0xff;
|
*tp++ = (unsigned char) val & 0xff;
|
||||||
saw_xdigit = 0;
|
saw_xdigit = 0;
|
||||||
digits = 0;
|
digits = 0;
|
||||||
val = 0;
|
val = 0;
|
||||||
continue;
|
continue;
|
||||||
}
|
}
|
||||||
if (ch == '.' && ((tp + NS_INADDRSZ) <= endp) &&
|
if (ch == '.' && ((tp + NS_INADDRSZ) <= endp) &&
|
||||||
getv4(curtok, tp, &bits) > 0) {
|
getv4(curtok, tp, &bits) > 0) {
|
||||||
tp += NS_INADDRSZ;
|
tp += NS_INADDRSZ;
|
||||||
saw_xdigit = 0;
|
saw_xdigit = 0;
|
||||||
ipv4 = 1;
|
ipv4 = 1;
|
||||||
break; /* '\0' was seen by inet_pton4(). */
|
break; /* '\0' was seen by inet_pton4(). */
|
||||||
}
|
}
|
||||||
if (ch == '/' && getbits(src, &bits) > 0)
|
if (ch == '/' && getbits(src, &bits) > 0)
|
||||||
break;
|
break;
|
||||||
goto enoent;
|
goto enoent;
|
||||||
}
|
}
|
||||||
if (saw_xdigit) {
|
if (saw_xdigit) {
|
||||||
if (tp + NS_INT16SZ > endp)
|
if (tp + NS_INT16SZ > endp)
|
||||||
goto enoent;
|
goto enoent;
|
||||||
*tp++ = (unsigned char) (val >> 8) & 0xff;
|
*tp++ = (unsigned char) (val >> 8) & 0xff;
|
||||||
*tp++ = (unsigned char) val & 0xff;
|
*tp++ = (unsigned char) val & 0xff;
|
||||||
}
|
}
|
||||||
if (bits == -1)
|
if (bits == -1)
|
||||||
bits = 128;
|
bits = 128;
|
||||||
|
|
||||||
words = (bits + 15) / 16;
|
words = (bits + 15) / 16;
|
||||||
if (words < 2)
|
if (words < 2)
|
||||||
words = 2;
|
words = 2;
|
||||||
if (ipv4)
|
if (ipv4)
|
||||||
words = 8;
|
words = 8;
|
||||||
endp = tmp + 2 * words;
|
endp = tmp + 2 * words;
|
||||||
|
|
||||||
if (colonp != NULL) {
|
if (colonp != NULL) {
|
||||||
/*
|
/*
|
||||||
* Since some memmove()'s erroneously fail to handle
|
* Since some memmove()'s erroneously fail to handle
|
||||||
* overlapping regions, we'll do the shift by hand.
|
* overlapping regions, we'll do the shift by hand.
|
||||||
*/
|
*/
|
||||||
const int n = tp - colonp;
|
const int n = (int)(tp - colonp);
|
||||||
int i;
|
int i;
|
||||||
|
|
||||||
if (tp == endp)
|
if (tp == endp)
|
||||||
goto enoent;
|
goto enoent;
|
||||||
for (i = 1; i <= n; i++) {
|
for (i = 1; i <= n; i++) {
|
||||||
endp[- i] = colonp[n - i];
|
endp[- i] = colonp[n - i];
|
||||||
colonp[n - i] = 0;
|
colonp[n - i] = 0;
|
||||||
}
|
}
|
||||||
tp = endp;
|
tp = endp;
|
||||||
}
|
}
|
||||||
if (tp != endp)
|
if (tp != endp)
|
||||||
goto enoent;
|
goto enoent;
|
||||||
|
|
||||||
bytes = (bits + 7) / 8;
|
bytes = (bits + 7) / 8;
|
||||||
if (bytes > size)
|
if (bytes > size)
|
||||||
goto emsgsize;
|
goto emsgsize;
|
||||||
memcpy(dst, tmp, bytes);
|
memcpy(dst, tmp, bytes);
|
||||||
return (bits);
|
return (bits);
|
||||||
|
|
||||||
enoent:
|
enoent:
|
||||||
errno = ENOENT;
|
errno = ENOENT;
|
||||||
return (-1);
|
return (-1);
|
||||||
|
|
||||||
emsgsize:
|
emsgsize:
|
||||||
errno = EMSGSIZE;
|
errno = EMSGSIZE;
|
||||||
return (-1);
|
return (-1);
|
||||||
}
|
}
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* int
|
* int
|
||||||
* inet_net_pton(af, src, dst, size)
|
* inet_net_pton(af, src, dst, size)
|
||||||
* convert network number from presentation to network format.
|
* convert network number from presentation to network format.
|
||||||
* accepts hex octets, hex strings, decimal octets, and /CIDR.
|
* accepts hex octets, hex strings, decimal octets, and /CIDR.
|
||||||
* "size" is in bytes and describes "dst".
|
* "size" is in bytes and describes "dst".
|
||||||
* return:
|
* return:
|
||||||
* number of bits, either imputed classfully or specified with /CIDR,
|
* number of bits, either imputed classfully or specified with /CIDR,
|
||||||
* or -1 if some failure occurred (check errno). ENOENT means it was
|
* or -1 if some failure occurred (check errno). ENOENT means it was
|
||||||
* not a valid network specification.
|
* not a valid network specification.
|
||||||
* author:
|
* author:
|
||||||
* Paul Vixie (ISC), June 1996
|
* Paul Vixie (ISC), June 1996
|
||||||
*/
|
*/
|
||||||
int
|
int
|
||||||
ares_inet_net_pton(int af, const char *src, void *dst, size_t size) {
|
ares_inet_net_pton(int af, const char *src, void *dst, size_t size)
|
||||||
switch (af) {
|
{
|
||||||
case AF_INET:
|
switch (af) {
|
||||||
return (inet_net_pton_ipv4(src, dst, size));
|
case AF_INET:
|
||||||
case AF_INET6:
|
return (inet_net_pton_ipv4(src, dst, size));
|
||||||
return (inet_net_pton_ipv6(src, dst, size));
|
case AF_INET6:
|
||||||
default:
|
return (inet_net_pton_ipv6(src, dst, size));
|
||||||
errno = EAFNOSUPPORT;
|
default:
|
||||||
return (-1);
|
errno = EAFNOSUPPORT;
|
||||||
}
|
return (-1);
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
#if !defined(HAVE_INET_PTON) || !defined(HAVE_INET_PTON_IPV6)
|
#if !defined(HAVE_INET_PTON) || !defined(HAVE_INET_PTON_IPV6)
|
||||||
int ares_inet_pton(int af, const char *src, void *dst) {
|
int ares_inet_pton(int af, const char *src, void *dst)
|
||||||
int size, result;
|
{
|
||||||
|
int size, result;
|
||||||
|
|
||||||
if (af == AF_INET)
|
if (af == AF_INET)
|
||||||
size = sizeof(struct in_addr);
|
size = sizeof(struct in_addr);
|
||||||
else if (af == AF_INET6)
|
else if (af == AF_INET6)
|
||||||
size = sizeof(struct in6_addr);
|
size = sizeof(struct in6_addr);
|
||||||
else
|
else
|
||||||
{
|
{
|
||||||
errno = EAFNOSUPPORT;
|
errno = EAFNOSUPPORT;
|
||||||
return -1;
|
return -1;
|
||||||
}
|
}
|
||||||
result = ares_inet_net_pton(af, src, dst, size);
|
result = ares_inet_net_pton(af, src, dst, size);
|
||||||
if (result == -1 && errno == ENOENT)
|
if (result == -1 && errno == ENOENT)
|
||||||
return 0;
|
return 0;
|
||||||
return (result > -1 ? 1 : -1);
|
return (result > -1 ? 1 : -1);
|
||||||
}
|
}
|
||||||
#endif
|
#endif
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user