diff options
Diffstat (limited to 'resolv/inet_pton.c')
| -rw-r--r-- | resolv/inet_pton.c | 187 |
1 files changed, 0 insertions, 187 deletions
diff --git a/resolv/inet_pton.c b/resolv/inet_pton.c index 88d63c6..5307a5b 100644 --- a/resolv/inet_pton.c +++ b/resolv/inet_pton.c @@ -33,33 +33,7 @@ */ #include <arpa/inet.h> -#include <arpa/nameser.h> -#include <ctype.h> -#include <errno.h> -#include <netinet/in.h> #include <resolv/resolv-internal.h> -#include <string.h> -#include <sys/socket.h> -#include <sys/types.h> - -static int inet_pton4 (const char *src, const char *src_end, u_char *dst); -static int inet_pton6 (const char *src, const char *src_end, u_char *dst); - -int -__inet_pton_length (int af, const char *src, size_t srclen, void *dst) -{ - switch (af) - { - case AF_INET: - return inet_pton4 (src, src + srclen, dst); - case AF_INET6: - return inet_pton6 (src, src + srclen, dst); - default: - __set_errno (EAFNOSUPPORT); - return -1; - } -} -libc_hidden_def (__inet_pton_length) /* Like __inet_pton_length, but use strlen (SRC) as the length of SRC. */ @@ -71,164 +45,3 @@ __inet_pton (int af, const char *src, void *dst) libc_hidden_def (__inet_pton) weak_alias (__inet_pton, inet_pton) libc_hidden_weak (inet_pton) - -/* Like inet_aton but without all the hexadecimal, octal and shorthand - (and trailing garbage is not ignored). Return 1 if SRC is a valid - dotted quad, else 0. This function does not touch DST unless it's - returning 1. - Author: Paul Vixie, 1996. */ -static int -inet_pton4 (const char *src, const char *end, unsigned char *dst) -{ - int saw_digit, octets, ch; - unsigned char tmp[NS_INADDRSZ], *tp; - - saw_digit = 0; - octets = 0; - *(tp = tmp) = 0; - while (src < end) - { - ch = *src++; - if (ch >= '0' && ch <= '9') - { - unsigned int new = *tp * 10 + (ch - '0'); - - if (saw_digit && *tp == 0) - return 0; - if (new > 255) - return 0; - *tp = new; - 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); - return 1; -} - -/* Return the value of CH as a hexadecimal digit, or -1 if it is a - different type of character. */ -static int -hex_digit_value (char ch) -{ - if ('0' <= ch && ch <= '9') - return ch - '0'; - if ('a' <= ch && ch <= 'f') - return ch - 'a' + 10; - if ('A' <= ch && ch <= 'F') - return ch - 'A' + 10; - return -1; -} - -/* Convert presentation-level IPv6 address to network order binary - form. Return 1 if SRC is a valid [RFC1884 2.2] address, else 0. - This function does not touch DST unless it's returning 1. - Author: Paul Vixie, 1996. Inspired by Mark Andrews. */ -static int -inet_pton6 (const char *src, const char *src_endp, unsigned char *dst) -{ - unsigned char tmp[NS_IN6ADDRSZ], *tp, *endp, *colonp; - const char *curtok; - int ch; - size_t xdigits_seen; /* Number of hex digits since colon. */ - unsigned int val; - - tp = memset (tmp, '\0', NS_IN6ADDRSZ); - endp = tp + NS_IN6ADDRSZ; - colonp = NULL; - - /* Leading :: requires some special handling. */ - if (src == src_endp) - return 0; - if (*src == ':') - { - ++src; - if (src == src_endp || *src != ':') - return 0; - } - - curtok = src; - xdigits_seen = 0; - val = 0; - while (src < src_endp) - { - ch = *src++; - int digit = hex_digit_value (ch); - if (digit >= 0) - { - if (xdigits_seen == 4) - return 0; - val <<= 4; - val |= digit; - if (val > 0xffff) - return 0; - ++xdigits_seen; - continue; - } - if (ch == ':') - { - curtok = src; - if (xdigits_seen == 0) - { - if (colonp) - return 0; - colonp = tp; - continue; - } - else if (src == src_endp) - return 0; - if (tp + NS_INT16SZ > endp) - return 0; - *tp++ = (unsigned char) (val >> 8) & 0xff; - *tp++ = (unsigned char) val & 0xff; - xdigits_seen = 0; - val = 0; - continue; - } - if (ch == '.' && ((tp + NS_INADDRSZ) <= endp) - && inet_pton4 (curtok, src_endp, tp) > 0) - { - tp += NS_INADDRSZ; - xdigits_seen = 0; - break; /* '\0' was seen by inet_pton4. */ - } - return 0; - } - if (xdigits_seen > 0) - { - if (tp + NS_INT16SZ > endp) - return 0; - *tp++ = (unsigned char) (val >> 8) & 0xff; - *tp++ = (unsigned char) val & 0xff; - } - if (colonp != NULL) - { - /* Replace :: with zeros. */ - if (tp == endp) - /* :: would expand to a zero-width field. */ - return 0; - size_t n = tp - colonp; - memmove (endp - n, colonp, n); - memset (colonp, 0, endp - n - colonp); - tp = endp; - } - if (tp != endp) - return 0; - memcpy (dst, tmp, NS_IN6ADDRSZ); - return 1; -} |