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inet_pton: Reformat in GNU style
Generated machine code is identical on x86-64.
This commit is contained in:
Florian Weimer
parent
8ec69bb7ec
commit
d53b865288
@ -1,3 +1,8 @@
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2017-05-11 Florian Weimer <fweimer@redhat.com>
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* resolv/inet_pton.c: Reformat in GNU style. Remove
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internal_function on static functions.
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2017-05-11 Florian Weimer <fweimer@redhat.com>
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* support/support_format_addrinfo.c (format_ai_flags_1): Renamed
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@ -25,188 +25,192 @@
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#include <string.h>
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#include <errno.h>
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/*
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* WARNING: Don't even consider trying to compile this on a system where
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* sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX.
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*/
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static int inet_pton4 (const char *src, unsigned char *dst);
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static int inet_pton6 (const char *src, unsigned char *dst);
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static int inet_pton4 (const char *src, u_char *dst) internal_function;
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static int inet_pton6 (const char *src, u_char *dst) internal_function;
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/* int
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* inet_pton(af, src, dst)
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* convert from presentation format (which usually means ASCII printable)
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* to network format (which is usually some kind of binary format).
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/* Convert from presentation format (which usually means ASCII printable)
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* to network format (which is usually some kind of binary format).
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*
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* return:
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* 1 if the address was valid for the specified address family
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* 0 if the address wasn't valid (`dst' is untouched in this case)
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* -1 if some other error occurred (`dst' is untouched in this case, too)
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* 1 if the address was valid for the specified address family
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* 0 if the address wasn't valid (`dst' is untouched in this case)
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* -1 if some other error occurred (`dst' is untouched in this case, too)
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* author:
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* Paul Vixie, 1996.
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* Paul Vixie, 1996.
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*/
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int
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__inet_pton (int af, const char *src, void *dst)
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{
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switch (af) {
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case AF_INET:
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return (inet_pton4(src, dst));
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case AF_INET6:
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return (inet_pton6(src, dst));
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default:
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__set_errno (EAFNOSUPPORT);
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return (-1);
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}
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/* NOTREACHED */
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switch (af)
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{
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case AF_INET:
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return inet_pton4 (src, dst);
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case AF_INET6:
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return inet_pton6 (src, dst);
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default:
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__set_errno (EAFNOSUPPORT);
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return -1;
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}
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}
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libc_hidden_def (__inet_pton)
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weak_alias (__inet_pton, inet_pton)
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libc_hidden_weak (inet_pton)
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/* int
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* inet_pton4(src, dst)
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* like inet_aton() but without all the hexadecimal, octal (with the
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* exception of 0) and shorthand.
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/* Like inet_atonbut without all the hexadecimal, octal and shorthand.
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*
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* return:
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* 1 if `src' is a valid dotted quad, else 0.
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* 1 if `src' is a valid dotted quad, else 0.
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* notice:
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* does not touch `dst' unless it's returning 1.
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* does not touch `dst' unless it's returning 1.
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* author:
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* Paul Vixie, 1996.
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* Paul Vixie, 1996.
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*/
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static int
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internal_function
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inet_pton4 (const char *src, u_char *dst)
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inet_pton4 (const char *src, unsigned char *dst)
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{
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int saw_digit, octets, ch;
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u_char tmp[NS_INADDRSZ], *tp;
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int saw_digit, octets, ch;
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unsigned char tmp[NS_INADDRSZ], *tp;
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saw_digit = 0;
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octets = 0;
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*(tp = tmp) = 0;
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while ((ch = *src++) != '\0') {
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saw_digit = 0;
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octets = 0;
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*(tp = tmp) = 0;
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while ((ch = *src++) != '\0')
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{
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if (ch >= '0' && ch <= '9')
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{
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unsigned int new = *tp * 10 + (ch - '0');
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if (ch >= '0' && ch <= '9') {
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u_int new = *tp * 10 + (ch - '0');
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if (saw_digit && *tp == 0)
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return (0);
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if (new > 255)
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return (0);
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*tp = new;
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if (! saw_digit) {
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if (++octets > 4)
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return (0);
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saw_digit = 1;
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}
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} else if (ch == '.' && saw_digit) {
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if (octets == 4)
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return (0);
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*++tp = 0;
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saw_digit = 0;
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} else
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return (0);
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}
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if (octets < 4)
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return (0);
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memcpy(dst, tmp, NS_INADDRSZ);
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return (1);
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if (saw_digit && *tp == 0)
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return 0;
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if (new > 255)
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return 0;
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*tp = new;
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if (! saw_digit)
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{
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if (++octets > 4)
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return 0;
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saw_digit = 1;
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}
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}
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else if (ch == '.' && saw_digit)
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{
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if (octets == 4)
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return 0;
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*++tp = 0;
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saw_digit = 0;
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}
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else
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return 0;
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}
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if (octets < 4)
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return 0;
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memcpy (dst, tmp, NS_INADDRSZ);
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return 1;
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}
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/* int
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* inet_pton6(src, dst)
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* convert presentation level address to network order binary form.
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/* Cconvert presentation level address to network order binary form.
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*
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* return:
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* 1 if `src' is a valid [RFC1884 2.2] address, else 0.
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* 1 if `src' is a valid [RFC1884 2.2] address, else 0.
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* notice:
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* (1) does not touch `dst' unless it's returning 1.
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* (2) :: in a full address is silently ignored.
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* (1) does not touch `dst' unless it's returning 1.
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* (2) :: in a full address is silently ignored.
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* credit:
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* inspired by Mark Andrews.
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* inspired by Mark Andrews.
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* author:
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* Paul Vixie, 1996.
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* Paul Vixie, 1996.
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*/
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static int
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internal_function
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inet_pton6 (const char *src, u_char *dst)
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inet_pton6 (const char *src, unsigned char *dst)
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{
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static const char xdigits[] = "0123456789abcdef";
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u_char tmp[NS_IN6ADDRSZ], *tp, *endp, *colonp;
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const char *curtok;
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int ch, saw_xdigit;
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u_int val;
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static const char xdigits[] = "0123456789abcdef";
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unsigned char tmp[NS_IN6ADDRSZ], *tp, *endp, *colonp;
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const char *curtok;
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int ch, saw_xdigit;
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unsigned int val;
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tp = memset(tmp, '\0', NS_IN6ADDRSZ);
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endp = tp + NS_IN6ADDRSZ;
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colonp = NULL;
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/* Leading :: requires some special handling. */
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if (*src == ':')
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if (*++src != ':')
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return (0);
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curtok = src;
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saw_xdigit = 0;
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val = 0;
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while ((ch = tolower (*src++)) != '\0') {
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const char *pch;
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tp = memset (tmp, '\0', NS_IN6ADDRSZ);
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endp = tp + NS_IN6ADDRSZ;
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colonp = NULL;
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/* Leading :: requires some special handling. */
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if (*src == ':')
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if (*++src != ':')
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return 0;
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curtok = src;
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saw_xdigit = 0;
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val = 0;
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while ((ch = tolower (*src++)) != '\0')
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{
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const char *pch;
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pch = strchr(xdigits, ch);
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if (pch != NULL) {
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val <<= 4;
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val |= (pch - xdigits);
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if (val > 0xffff)
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return (0);
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saw_xdigit = 1;
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continue;
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}
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if (ch == ':') {
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curtok = src;
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if (!saw_xdigit) {
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if (colonp)
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return (0);
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colonp = tp;
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continue;
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} else if (*src == '\0') {
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return (0);
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}
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if (tp + NS_INT16SZ > endp)
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return (0);
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*tp++ = (u_char) (val >> 8) & 0xff;
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*tp++ = (u_char) val & 0xff;
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saw_xdigit = 0;
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val = 0;
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continue;
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}
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if (ch == '.' && ((tp + NS_INADDRSZ) <= endp) &&
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inet_pton4(curtok, tp) > 0) {
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tp += NS_INADDRSZ;
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saw_xdigit = 0;
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break; /* '\0' was seen by inet_pton4(). */
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}
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return (0);
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pch = strchr (xdigits, ch);
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if (pch != NULL)
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{
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val <<= 4;
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val |= (pch - xdigits);
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if (val > 0xffff)
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return 0;
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saw_xdigit = 1;
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continue;
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}
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if (saw_xdigit) {
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if (tp + NS_INT16SZ > endp)
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return (0);
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*tp++ = (u_char) (val >> 8) & 0xff;
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*tp++ = (u_char) val & 0xff;
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if (ch == ':')
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{
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curtok = src;
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if (!saw_xdigit)
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{
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if (colonp)
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return 0;
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colonp = tp;
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continue;
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}
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else if (*src == '\0')
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{
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return 0;
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}
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if (tp + NS_INT16SZ > endp)
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return 0;
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*tp++ = (unsigned char) (val >> 8) & 0xff;
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*tp++ = (unsigned char) val & 0xff;
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saw_xdigit = 0;
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val = 0;
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continue;
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}
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if (colonp != NULL) {
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/*
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* Since some memmove()'s erroneously fail to handle
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* overlapping regions, we'll do the shift by hand.
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*/
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const int n = tp - colonp;
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int i;
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if (ch == '.' && ((tp + NS_INADDRSZ) <= endp) &&
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inet_pton4 (curtok, tp) > 0)
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{
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tp += NS_INADDRSZ;
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saw_xdigit = 0;
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break; /* '\0' was seen by inet_pton4. */
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}
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return 0;
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}
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if (saw_xdigit)
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{
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if (tp + NS_INT16SZ > endp)
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return 0;
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*tp++ = (unsigned char) (val >> 8) & 0xff;
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*tp++ = (unsigned char) val & 0xff;
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}
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if (colonp != NULL)
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{
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/*
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* Since some memmove's erroneously fail to handle
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* overlapping regions, we'll do the shift by hand.
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*/
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const int n = tp - colonp;
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int i;
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if (tp == endp)
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return (0);
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for (i = 1; i <= n; i++) {
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endp[- i] = colonp[n - i];
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colonp[n - i] = 0;
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}
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tp = endp;
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if (tp == endp)
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return 0;
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for (i = 1; i <= n; i++)
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{
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endp[- i] = colonp[n - i];
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colonp[n - i] = 0;
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}
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if (tp != endp)
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return (0);
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memcpy(dst, tmp, NS_IN6ADDRSZ);
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return (1);
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tp = endp;
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}
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if (tp != endp)
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return 0;
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memcpy (dst, tmp, NS_IN6ADDRSZ);
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return 1;
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}
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