diff options
author | Daniel Stenberg <daniel@haxx.se> | 2010-03-24 10:34:30 +0100 |
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committer | Daniel Stenberg <daniel@haxx.se> | 2010-03-24 10:34:30 +0100 |
commit | 4259d2df7dd95637a4b1e3fb174fe5e5aef81069 (patch) | |
tree | 8abd5ab61fbacf160f9084a44613fcc4b20e8483 /ares/inet_net_pton.c | |
parent | 4b351d018e3d6691191fd653a17f14f4a31e0b4c (diff) |
remove the ares subtree
c-ares is now hosted entirely separate from the curl project
see http://c-ares.haxx.se/ for all details concerning c-ares,
its source repository and more.
Diffstat (limited to 'ares/inet_net_pton.c')
-rw-r--r-- | ares/inet_net_pton.c | 447 |
1 files changed, 0 insertions, 447 deletions
diff --git a/ares/inet_net_pton.c b/ares/inet_net_pton.c deleted file mode 100644 index 9c4717ab1..000000000 --- a/ares/inet_net_pton.c +++ /dev/null @@ -1,447 +0,0 @@ -/* $Id$ */ - -/* - * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") - * Copyright (c) 1996,1999 by Internet Software Consortium. - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT - * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include "ares_setup.h" - -#ifdef HAVE_SYS_SOCKET_H -# include <sys/socket.h> -#endif -#ifdef HAVE_NETINET_IN_H -# include <netinet/in.h> -#endif -#ifdef HAVE_ARPA_INET_H -# include <arpa/inet.h> -#endif -#ifdef HAVE_ARPA_NAMESER_H -# include <arpa/nameser.h> -#else -# include "nameser.h" -#endif -#ifdef HAVE_ARPA_NAMESER_COMPAT_H -# include <arpa/nameser_compat.h> -#endif - -#include <ctype.h> -#include <errno.h> -#include <stdio.h> -#include <string.h> -#include <stdlib.h> - -#include "ares.h" -#include "ares_ipv6.h" -#include "inet_net_pton.h" - -#if !defined(HAVE_INET_NET_PTON) || !defined(HAVE_INET_NET_PTON_IPV6) - -/* - * static int - * inet_net_pton_ipv4(src, dst, size) - * convert IPv4 network number from presentation to network format. - * accepts hex octets, hex strings, decimal octets, and /CIDR. - * "size" is in bytes and describes "dst". - * return: - * number of bits, either imputed classfully or specified with /CIDR, - * or -1 if some failure occurred (check errno). ENOENT means it was - * not an IPv4 network specification. - * note: - * network byte order assumed. this means 192.5.5.240/28 has - * 0b11110000 in its fourth octet. - * note: - * On Windows we store the error in the thread errno, not - * in the winsock error code. This is to avoid loosing the - * actual last winsock error. So use macro ERRNO to fetch the - * errno this funtion sets when returning (-1), not SOCKERRNO. - * author: - * Paul Vixie (ISC), June 1996 - */ -static int -inet_net_pton_ipv4(const char *src, unsigned char *dst, size_t size) -{ - static const char xdigits[] = "0123456789abcdef"; - static const char digits[] = "0123456789"; - int n, ch, tmp = 0, dirty, bits; - const unsigned char *odst = dst; - - ch = *src++; - if (ch == '0' && (src[0] == 'x' || src[0] == 'X') - && ISXDIGIT(src[1])) { - /* Hexadecimal: Eat nybble string. */ - if (!size) - goto emsgsize; - dirty = 0; - src++; /* skip x or X. */ - while ((ch = *src++) != '\0' && ISXDIGIT(ch)) { - if (ISUPPER(ch)) - ch = tolower(ch); - n = (int)(strchr(xdigits, ch) - xdigits); - if (dirty == 0) - tmp = n; - else - tmp = (tmp << 4) | n; - if (++dirty == 2) { - if (!size--) - goto emsgsize; - *dst++ = (unsigned char) tmp; - dirty = 0; - } - } - if (dirty) { /* Odd trailing nybble? */ - if (!size--) - goto emsgsize; - *dst++ = (unsigned char) (tmp << 4); - } - } else if (ISDIGIT(ch)) { - /* Decimal: eat dotted digit string. */ - for (;;) { - tmp = 0; - do { - n = (int)(strchr(digits, ch) - digits); - tmp *= 10; - tmp += n; - if (tmp > 255) - goto enoent; - } while ((ch = *src++) != '\0' && - ISDIGIT(ch)); - if (!size--) - goto emsgsize; - *dst++ = (unsigned char) tmp; - if (ch == '\0' || ch == '/') - break; - if (ch != '.') - goto enoent; - ch = *src++; - if (!ISDIGIT(ch)) - goto enoent; - } - } else - goto enoent; - - bits = -1; - if (ch == '/' && - ISDIGIT(src[0]) && dst > odst) { - /* CIDR width specifier. Nothing can follow it. */ - ch = *src++; /* Skip over the /. */ - bits = 0; - do { - n = (int)(strchr(digits, ch) - digits); - bits *= 10; - bits += n; - } while ((ch = *src++) != '\0' && ISDIGIT(ch)); - if (ch != '\0') - goto enoent; - if (bits > 32) - goto emsgsize; - } - - /* Firey death and destruction unless we prefetched EOS. */ - if (ch != '\0') - goto enoent; - - /* If nothing was written to the destination, we found no address. */ - if (dst == odst) - goto enoent; - /* If no CIDR spec was given, infer width from net class. */ - if (bits == -1) { - if (*odst >= 240) /* Class E */ - bits = 32; - else if (*odst >= 224) /* Class D */ - bits = 8; - else if (*odst >= 192) /* Class C */ - bits = 24; - else if (*odst >= 128) /* Class B */ - bits = 16; - else /* Class A */ - bits = 8; - /* If imputed mask is narrower than specified octets, widen. */ - if (bits < ((dst - odst) * 8)) - bits = (int)(dst - odst) * 8; - /* - * If there are no additional bits specified for a class D - * address adjust bits to 4. - */ - if (bits == 8 && *odst == 224) - bits = 4; - } - /* Extend network to cover the actual mask. */ - while (bits > ((dst - odst) * 8)) { - if (!size--) - goto emsgsize; - *dst++ = '\0'; - } - return (bits); - - enoent: - SET_ERRNO(ENOENT); - return (-1); - - emsgsize: - SET_ERRNO(EMSGSIZE); - return (-1); -} - -static int -getbits(const char *src, int *bitsp) -{ - static const char digits[] = "0123456789"; - int n; - int val; - char ch; - - val = 0; - n = 0; - while ((ch = *src++) != '\0') { - const char *pch; - - pch = strchr(digits, ch); - if (pch != NULL) { - if (n++ != 0 && val == 0) /* no leading zeros */ - return (0); - val *= 10; - val += (pch - digits); - if (val > 128) /* range */ - return (0); - continue; - } - return (0); - } - if (n == 0) - return (0); - *bitsp = val; - return (1); -} - -static int -getv4(const char *src, unsigned char *dst, int *bitsp) -{ - static const char digits[] = "0123456789"; - unsigned char *odst = dst; - int n; - unsigned int val; - char ch; - - val = 0; - n = 0; - while ((ch = *src++) != '\0') { - const char *pch; - - pch = strchr(digits, ch); - if (pch != NULL) { - if (n++ != 0 && val == 0) /* no leading zeros */ - return (0); - val *= 10; - val += (pch - digits); - if (val > 255) /* range */ - return (0); - continue; - } - if (ch == '.' || ch == '/') { - if (dst - odst > 3) /* too many octets? */ - return (0); - *dst++ = (unsigned char)val; - if (ch == '/') - return (getbits(src, bitsp)); - val = 0; - n = 0; - continue; - } - return (0); - } - if (n == 0) - return (0); - if (dst - odst > 3) /* too many octets? */ - return (0); - *dst++ = (unsigned char)val; - return (1); -} - -static int -inet_net_pton_ipv6(const char *src, unsigned char *dst, size_t size) -{ - static const char xdigits_l[] = "0123456789abcdef", - xdigits_u[] = "0123456789ABCDEF"; - unsigned char tmp[NS_IN6ADDRSZ], *tp, *endp, *colonp; - const char *xdigits, *curtok; - int ch, saw_xdigit; - unsigned int val; - int digits; - int bits; - size_t bytes; - int words; - int ipv4; - - memset((tp = tmp), '\0', NS_IN6ADDRSZ); - endp = tp + NS_IN6ADDRSZ; - colonp = NULL; - /* Leading :: requires some special handling. */ - if (*src == ':') - if (*++src != ':') - goto enoent; - curtok = src; - saw_xdigit = 0; - val = 0; - digits = 0; - bits = -1; - ipv4 = 0; - while ((ch = *src++) != '\0') { - const char *pch; - - if ((pch = strchr((xdigits = xdigits_l), ch)) == NULL) - pch = strchr((xdigits = xdigits_u), ch); - if (pch != NULL) { - val <<= 4; - val |= (pch - xdigits); - if (++digits > 4) - goto enoent; - saw_xdigit = 1; - continue; - } - if (ch == ':') { - curtok = src; - if (!saw_xdigit) { - if (colonp) - goto enoent; - colonp = tp; - continue; - } else if (*src == '\0') - goto enoent; - if (tp + NS_INT16SZ > endp) - return (0); - *tp++ = (unsigned char)((val >> 8) & 0xff); - *tp++ = (unsigned char)(val & 0xff); - saw_xdigit = 0; - digits = 0; - val = 0; - continue; - } - if (ch == '.' && ((tp + NS_INADDRSZ) <= endp) && - getv4(curtok, tp, &bits) > 0) { - tp += NS_INADDRSZ; - saw_xdigit = 0; - ipv4 = 1; - break; /* '\0' was seen by inet_pton4(). */ - } - if (ch == '/' && getbits(src, &bits) > 0) - break; - goto enoent; - } - if (saw_xdigit) { - if (tp + NS_INT16SZ > endp) - goto enoent; - *tp++ = (unsigned char)((val >> 8) & 0xff); - *tp++ = (unsigned char)(val & 0xff); - } - if (bits == -1) - bits = 128; - - words = (bits + 15) / 16; - if (words < 2) - words = 2; - if (ipv4) - words = 8; - endp = tmp + 2 * words; - - if (colonp != NULL) { - /* - * Since some memmove()'s erroneously fail to handle - * overlapping regions, we'll do the shift by hand. - */ - const int n = (int)(tp - colonp); - int i; - - if (tp == endp) - goto enoent; - for (i = 1; i <= n; i++) { - endp[- i] = colonp[n - i]; - colonp[n - i] = 0; - } - tp = endp; - } - if (tp != endp) - goto enoent; - - bytes = (bits + 7) / 8; - if (bytes > size) - goto emsgsize; - memcpy(dst, tmp, bytes); - return (bits); - - enoent: - SET_ERRNO(ENOENT); - return (-1); - - emsgsize: - SET_ERRNO(EMSGSIZE); - return (-1); -} - -/* - * int - * inet_net_pton(af, src, dst, size) - * convert network number from presentation to network format. - * accepts hex octets, hex strings, decimal octets, and /CIDR. - * "size" is in bytes and describes "dst". - * return: - * number of bits, either imputed classfully or specified with /CIDR, - * or -1 if some failure occurred (check errno). ENOENT means it was - * not a valid network specification. - * note: - * On Windows we store the error in the thread errno, not - * in the winsock error code. This is to avoid loosing the - * actual last winsock error. So use macro ERRNO to fetch the - * errno this funtion sets when returning (-1), not SOCKERRNO. - * author: - * Paul Vixie (ISC), June 1996 - */ -int -ares_inet_net_pton(int af, const char *src, void *dst, size_t size) -{ - switch (af) { - case AF_INET: - return (inet_net_pton_ipv4(src, dst, size)); - case AF_INET6: - return (inet_net_pton_ipv6(src, dst, size)); - default: - SET_ERRNO(EAFNOSUPPORT); - return (-1); - } -} - -#endif - -#ifndef HAVE_INET_PTON -int ares_inet_pton(int af, const char *src, void *dst) -{ - int result; - size_t size; - - if (af == AF_INET) - size = sizeof(struct in_addr); - else if (af == AF_INET6) - size = sizeof(struct ares_in6_addr); - else - { - SET_ERRNO(EAFNOSUPPORT); - return -1; - } - result = ares_inet_net_pton(af, src, dst, size); - if (result == -1 && ERRNO == ENOENT) - return 0; - return (result > -1 ? 1 : -1); -} -#endif |