From d2f207cd050fced5eb01f9915963d41d7423cde1 Mon Sep 17 00:00:00 2001
From: Stewart Brodie <sbrodie@gitlab.riscosopen.org>
Date: Wed, 28 Jul 1999 11:24:30 +0000
Subject: [PATCH] Added new conversion functions from latest resolver
libraries.
Detail:
New function inet_net_ntop, inet_net_pton, inet_ntop, inet_pton
added. These are thread-safe versions of other functions and
should be used in preference to things like inet_ntoa, inet_aton.
These functions are IPv6 aware - pass AF_INET6 to them if you
want IPv6 operations, pass AF_INET if you want IPv4 (ie. current
behaviour).
Extra address family, protocol family definitions added for IPv6
(and others since they were there in the FreeBSD headers),
specifically: AF_INET6, PF_INET6, IN6ADDRSZ. Corresponding
extra DNS record types (T_AAAA) have been added too.
APIs are standard APIs - documentation added to LibraryDoc.
New inetlib/c/* files also contain their own documentation.
Admin:
Required by TFTPserver (RISC OS version)
Note: addition of these macros to the header file does *not* imply
that the Internet module now supports IPv6. These are header
file macros added for the benefit of the conversion routines.
Version 5.30. Tagged as 'TCPIPLibs-5_30'
---
LibraryDoc | 35 ++++++-
VersionNum | 14 +--
headers/arpa/h/inet | 4 +
headers/arpa/h/nameser | 50 ++++++++++
headers/sys/h/socket | 14 ++-
inetlib/Makefile | 9 +-
inetlib/c/inet_nntop | 142 +++++++++++++++++++++++++++
inetlib/c/inet_npton | 213 ++++++++++++++++++++++++++++++++++++++++
inetlib/c/inet_ntop | 197 +++++++++++++++++++++++++++++++++++++
inetlib/c/inet_pton | 217 +++++++++++++++++++++++++++++++++++++++++
inetlib/h/inetlib | 6 +-
11 files changed, 888 insertions(+), 13 deletions(-)
create mode 100644 inetlib/c/inet_nntop
create mode 100644 inetlib/c/inet_npton
create mode 100644 inetlib/c/inet_ntop
create mode 100644 inetlib/c/inet_pton
diff --git a/LibraryDoc b/LibraryDoc
index 619a772..4c9ed94 100644
--- a/LibraryDoc
+++ b/LibraryDoc
@@ -1,4 +1,4 @@
-Acorn TCP/IP libraries version 5.26
+Acorn TCP/IP libraries version 5.30
-----------------------------------
These libraries are an update to the libraries described in chapter 123 of the PRM
@@ -1261,6 +1261,39 @@ New prototypes: u_long inet_addr(const char *cp);
u_long inet_network(const char *cp);
struct in_addr inet_makeaddr(u_long net, u_long host);
+Four new functions have been defined:
+
+ char *inet_net_ntop(int af, const void *src, int bits, char *dst, size_t size);
+
+This function convert network number from network to presentation format.
+Generates CIDR style result always. The return value is pointer to dst, or
+NULL if an error occurred (check errno).
+
+ int inet_net_pton(int af, const char *buf, void *, size_t);
+
+This function parses a presentation format (ie. textual) address into a
+network address (the reverse operation to inet_net_ntop). af is the address
+type (AF_INET or AF_INET6); buf points to the textual representation, buf
+points to the output buffer and size is the length of that buffer. The
+return value is the 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.
+
+ int inet_pton(int af, const char *src, void *dst);
+
+Convert from presentation format (which usually means ASCII printable) to network
+format (which is usually some kind of binary format). Return:
+ 1 if the address was valid for the specified address family
+ 0 if the address wasn't valid (`dst' is untouched in this case)
+ -1 if some other error occurred (`dst' is untouched in this case, too)
+
+ const char *inet_ntop(int af, const void *src, char *dst, size_t size);
+
+Convert a network format address to presentation format. Returns a pointer to
+presentation format address (`dst'), or NULL (see errno).
+
+
+
_INET_ERROR
===========
diff --git a/VersionNum b/VersionNum
index eee2c70..1123d65 100644
--- a/VersionNum
+++ b/VersionNum
@@ -1,15 +1,15 @@
-/* (5.29)
+/* (5.30)
*
* This file is automatically maintained by srccommit, do not edit manually.
*
*/
-#define Module_MajorVersion_CMHG 5.29
+#define Module_MajorVersion_CMHG 5.30
#define Module_MinorVersion_CMHG
-#define Module_Date_CMHG 22 Jul 1999
+#define Module_Date_CMHG 28 Jul 1999
-#define Module_MajorVersion "5.29"
-#define Module_Version 529
+#define Module_MajorVersion "5.30"
+#define Module_Version 530
#define Module_MinorVersion ""
-#define Module_Date "22 Jul 1999"
+#define Module_Date "28 Jul 1999"
-#define Module_FullVersion "5.29"
+#define Module_FullVersion "5.30"
diff --git a/headers/arpa/h/inet b/headers/arpa/h/inet
index bf6fba9..a8d1fea 100644
--- a/headers/arpa/h/inet
+++ b/headers/arpa/h/inet
@@ -47,7 +47,11 @@ unsigned long inet_lnaof(struct in_addr);
struct in_addr inet_makeaddr(u_long , u_long);
unsigned long inet_netof(struct in_addr);
unsigned long inet_network(const char *);
+char *inet_net_ntop(int, const void *, int, char *, size_t);
+int inet_net_pton(int, const char *, void *, size_t);
char *inet_ntoa(struct in_addr);
+int inet_pton(int, const char *, void *);
+const char *inet_ntop(int, const void *, char *, size_t);
__END_DECLS
#endif /* !_INET_H_ */
diff --git a/headers/arpa/h/nameser b/headers/arpa/h/nameser
index bf0ab59..9fc685e 100644
--- a/headers/arpa/h/nameser
+++ b/headers/arpa/h/nameser
@@ -87,6 +87,7 @@
#define INT32SZ 4 /* for systems without 32-bit ints */
#define INT16SZ 2 /* for systems without 16-bit ints */
#define INADDRSZ 4 /* for sizeof(struct inaddr) != 4 */
+#define IN6ADDRSZ 16 /* IPv6 T_AAAA */
/*
* Internet nameserver port number
@@ -158,12 +159,19 @@
#define T_GPOS 27 /* geographical position (withdrawn) */
#define T_AAAA 28 /* IP6 Address */
#define T_LOC 29 /* Location Information */
+#define T_NXT 30 /* Next Valid Name in Zone */
+#define T_EID 31 /* Endpoint identifier */
+#define T_NIMLOC 32 /* Nimrod locator */
+#define T_SRV 33 /* Server selection */
+#define T_ATMA 34 /* ATM Address */
+#define T_NAPTR 35 /* Naming Authority PoinTeR */
/* non standard */
#define T_UINFO 100 /* user (finger) information */
#define T_UID 101 /* user ID */
#define T_GID 102 /* group ID */
#define T_UNSPEC 103 /* Unspecified format (binary data) */
/* Query type values which do not appear in resource records */
+#define T_IXFR 251 /* incremental zone transfer */
#define T_AXFR 252 /* transfer zone of authority */
#define T_MAILB 253 /* transfer mailbox records */
#define T_MAILA 254 /* transfer mail agent records */
@@ -179,6 +187,48 @@
/* Query class values which do not appear in resource records */
#define C_ANY 255 /* wildcard match */
+/*
+ * Flags field of the KEY RR rdata
+ */
+#define KEYFLAG_TYPEMASK 0xC000 /* Mask for "type" bits */
+#define KEYFLAG_TYPE_AUTH_CONF 0x0000 /* Key usable for both */
+#define KEYFLAG_TYPE_CONF_ONLY 0x8000 /* Key usable for confidentiality */
+#define KEYFLAG_TYPE_AUTH_ONLY 0x4000 /* Key usable for authentication */
+#define KEYFLAG_TYPE_NO_KEY 0xC000 /* No key usable for either; no key */
+/* The type bits can also be interpreted independently, as single bits: */
+#define KEYFLAG_NO_AUTH 0x8000 /* Key not usable for authentication */
+#define KEYFLAG_NO_CONF 0x4000 /* Key not usable for confidentiality */
+
+#define KEYFLAG_EXPERIMENTAL 0x2000 /* Security is *mandatory* if bit=0 */
+#define KEYFLAG_RESERVED3 0x1000 /* reserved - must be zero */
+#define KEYFLAG_RESERVED4 0x0800 /* reserved - must be zero */
+#define KEYFLAG_USERACCOUNT 0x0400 /* key is assoc. with a user acct */
+#define KEYFLAG_ENTITY 0x0200 /* key is assoc. with entity eg host */
+#define KEYFLAG_ZONEKEY 0x0100 /* key is zone key for the zone named */
+#define KEYFLAG_IPSEC 0x0080 /* key is for IPSEC use (host or user)*/
+#define KEYFLAG_EMAIL 0x0040 /* key is for email (MIME security) */
+#define KEYFLAG_RESERVED10 0x0020 /* reserved - must be zero */
+#define KEYFLAG_RESERVED11 0x0010 /* reserved - must be zero */
+#define KEYFLAG_SIGNATORYMASK 0x000F /* key can sign DNS RR's of same name */
+
+#define KEYFLAG_RESERVED_BITMASK ( KEYFLAG_RESERVED3 | \
+ KEYFLAG_RESERVED4 | \
+ KEYFLAG_RESERVED10| KEYFLAG_RESERVED11)
+
+/* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */
+#define ALGORITHM_MD5RSA 1 /* MD5 with RSA */
+#define ALGORITHM_EXPIRE_ONLY 253 /* No alg, no security */
+#define ALGORITHM_PRIVATE_OID 254 /* Key begins with OID indicating alg */
+
+/* Signatures */
+ /* Size of a mod or exp in bits */
+#define MIN_MD5RSA_KEY_PART_BITS 512
+#define MAX_MD5RSA_KEY_PART_BITS 2552
+ /* Total of binary mod and exp, bytes */
+#define MAX_MD5RSA_KEY_BYTES ((MAX_MD5RSA_KEY_PART_BITS+7/8)*2+3)
+ /* Max length of text sig block */
+#define MAX_KEY_BASE64 (((MAX_MD5RSA_KEY_BYTES+2)/3)*4)
+
/*
* Status return codes for T_UNSPEC conversion routines
*/
diff --git a/headers/sys/h/socket b/headers/sys/h/socket
index a309ae8..d61bec4 100644
--- a/headers/sys/h/socket
+++ b/headers/sys/h/socket
@@ -122,8 +122,12 @@ struct linger {
#define pseudo_AF_PIP 25 /* Help Identify PIP packets */
#define AF_ISDN 26 /* Integrated Services Digital Network*/
#define AF_E164 AF_ISDN /* CCITT E.164 recommendation */
+#define pseudo_AF_KEY 27 /* Internal key-management function */
+#define AF_INET6 28 /* IPv6 */
+#define AF_NATM 29 /* native ATM access */
+#define AF_ATM 30 /* ATM */
-#define AF_MAX 27
+#define AF_MAX 31
/*
* Structure used by kernel to store most
@@ -184,6 +188,10 @@ struct sockproto {
#define PF_RTIP pseudo_AF_FTIP /* same format as AF_INET */
#define PF_PIP pseudo_AF_PIP
#define PF_ISDN AF_ISDN
+#define PF_KEY pseudo_AF_KEY
+#define PF_INET6 AF_INET6
+#define PF_NATM AF_NATM
+#define PF_ATM AF_ATM
#define PF_MAX AF_MAX
@@ -224,6 +232,10 @@ struct sockproto {
{ "ipx", CTLTYPE_NODE }, \
{ "sip", CTLTYPE_NODE }, \
{ "pip", CTLTYPE_NODE }, \
+ { "isdn", CTLTYPE_NODE }, \
+ { "key", CTLTYPE_NODE }, \
+ { "inet6", CTLTYPE_NODE }, \
+ { "natm", CTLTYPE_NODE }, \
}
/*
diff --git a/inetlib/Makefile b/inetlib/Makefile
index e96a998..4aacba2 100644
--- a/inetlib/Makefile
+++ b/inetlib/Makefile
@@ -57,19 +57,22 @@ CFILES= gethent.c gethnad.c getnbyad.c getnbyna.c getnent.c \
getprent.c getprnam.c getproto.c getsbyna.c getsbypo.c \
getsent.c htonl.c inet_addr.c inet_lnaof.c inet_maddr.c \
inet_nof.c inet_ntoa.c inet_nwork.c rresvport.c \
- linkaddr.c ns_addr.c ns_ntoa.c iso_addr.c sysctlbyna.c
+ linkaddr.c ns_addr.c ns_ntoa.c iso_addr.c sysctlbyna.c \
+ inet_nntop.c inet_npton.c inet_ntop.c inet_pton.c
OFILES= gethent.o gethnad.o getnbyad.o getnbyna.o getnent.o \
getprent.o getprnam.o getproto.o getsbyna.o getsbypo.o \
getsent.o htonl.o inet_addr.o inet_lnaof.o inet_maddr.o \
inet_nof.o inet_ntoa.o inet_nwork.o rresvport.o \
- linkaddr.o ns_addr.o ns_ntoa.o iso_addr.o sysctlbyna.o
+ linkaddr.o ns_addr.o ns_ntoa.o iso_addr.o sysctlbyna.o \
+ inet_nntop.o inet_npton.o inet_ntop.o inet_pton.o
ZFILES= z.gethent z.gethnad z.getnbyad z.getnbyna z.getnent \
z.getprent z.getprnam z.getproto z.getsbyna z.getsbypo \
z.getsent z.htonl z.inet_addr z.inet_lnaof z.inet_maddr \
z.inet_nof z.inet_ntoa z.inet_nwork z.rresvport \
- z.linkaddr z.ns_addr z.ns_ntoa z.iso_addr z.sysctlbyna
+ z.linkaddr z.ns_addr z.ns_ntoa z.iso_addr z.sysctlbyna \
+ z.inet_nntop z.inet_npton z.inet_ntop z.inet_pton
.SUFFIXES: .z .o .c .s
diff --git a/inetlib/c/inet_nntop b/inetlib/c/inet_nntop
new file mode 100644
index 0000000..a658415
--- /dev/null
+++ b/inetlib/c/inet_nntop
@@ -0,0 +1,142 @@
+/*
+ * Copyright (c) 1996 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 INTERNET SOFTWARE CONSORTIUM DISCLAIMS
+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
+ * CONSORTIUM 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.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static const char rcsid[] = "$Id$";
+#endif
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#include <errno.h>
+#include <sys/errno.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include "inetlib.h"
+
+#ifdef SPRINTF_CHAR
+# define SPRINTF(x) strlen(sprintf/**/x)
+#else
+# define SPRINTF(x) ((size_t)sprintf x)
+#endif
+
+static char * inet_net_ntop_ipv4(const u_char *src, int bits,
+ char *dst, size_t size);
+
+/*
+ * char *
+ * inet_net_ntop(af, src, bits, dst, size)
+ * convert network number from network to presentation format.
+ * generates CIDR style result always.
+ * return:
+ * pointer to dst, or NULL if an error occurred (check errno).
+ * author:
+ * Paul Vixie (ISC), July 1996
+ */
+char *
+inet_net_ntop(af, src, bits, dst, size)
+ int af;
+ const void *src;
+ int bits;
+ char *dst;
+ size_t size;
+{
+ switch (af) {
+ case AF_INET:
+ return (inet_net_ntop_ipv4(src, bits, dst, size));
+ default:
+ errno = EAFNOSUPPORT;
+ return (NULL);
+ }
+}
+
+/*
+ * static char *
+ * inet_net_ntop_ipv4(src, bits, dst, size)
+ * convert IPv4 network number from network to presentation format.
+ * generates CIDR style result always.
+ * return:
+ * pointer to dst, or NULL if an error occurred (check errno).
+ * note:
+ * network byte order assumed. this means 192.5.5.240/28 has
+ * 0x11110000 in its fourth octet.
+ * author:
+ * Paul Vixie (ISC), July 1996
+ */
+static char *
+inet_net_ntop_ipv4(src, bits, dst, size)
+ const u_char *src;
+ int bits;
+ char *dst;
+ size_t size;
+{
+ char *odst = dst;
+ char *t;
+ u_int m;
+ int b;
+
+ if (bits < 0 || bits > 32) {
+ errno = EINVAL;
+ return (NULL);
+ }
+ if (bits == 0) {
+ if (size < sizeof "0")
+ goto emsgsize;
+ *dst++ = '0';
+ *dst = '\0';
+ }
+
+ /* Format whole octets. */
+ for (b = bits / 8; b > 0; b--) {
+ if (size < sizeof "255.")
+ goto emsgsize;
+ t = dst;
+ dst += SPRINTF((dst, "%u", *src++));
+ if (b > 1) {
+ *dst++ = '.';
+ *dst = '\0';
+ }
+ size -= (size_t)(dst - t);
+ }
+
+ /* Format partial octet. */
+ b = bits % 8;
+ if (b > 0) {
+ if (size < sizeof ".255")
+ goto emsgsize;
+ t = dst;
+ if (dst != odst)
+ *dst++ = '.';
+ m = ((1 << b) - 1) << (8 - b);
+ dst += SPRINTF((dst, "%u", *src & m));
+ size -= (size_t)(dst - t);
+ }
+
+ /* Format CIDR /width. */
+ if (size < sizeof "/32")
+ goto emsgsize;
+ dst += SPRINTF((dst, "/%u", bits));
+ return (odst);
+
+ emsgsize:
+ errno = EMSGSIZE;
+ return (NULL);
+}
diff --git a/inetlib/c/inet_npton b/inetlib/c/inet_npton
new file mode 100644
index 0000000..e752efe
--- /dev/null
+++ b/inetlib/c/inet_npton
@@ -0,0 +1,213 @@
+/*
+ * Copyright (c) 1996 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 INTERNET SOFTWARE CONSORTIUM DISCLAIMS
+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
+ * CONSORTIUM 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.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static const char rcsid[] = "$Id$";
+#endif
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#define NDEBUG
+#include <assert.h>
+#include <ctype.h>
+#include <errno.h>
+#include <sys/errno.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include "inetlib.h"
+
+#ifdef SPRINTF_CHAR
+# define SPRINTF(x) strlen(sprintf/**/x)
+#else
+# define SPRINTF(x) ((size_t)sprintf x)
+#endif
+
+#define isascii(val) (1)
+
+static int inet_net_pton_ipv4(const char *src, u_char *dst,
+ size_t size);
+
+/*
+ * static 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.
+ * author:
+ * Paul Vixie (ISC), June 1996
+ */
+int
+inet_net_pton(af, src, dst, size)
+ int af;
+ const char *src;
+ void *dst;
+ size_t size;
+{
+ switch (af) {
+ case AF_INET:
+ return (inet_net_pton_ipv4(src, dst, size));
+ default:
+ errno = EAFNOSUPPORT;
+ return (-1);
+ }
+}
+
+/*
+ * 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
+ * 0x11110000 in its fourth octet.
+ * author:
+ * Paul Vixie (ISC), June 1996
+ */
+static int
+inet_net_pton_ipv4(src, dst, size)
+ const char *src;
+ u_char *dst;
+ size_t size;
+{
+ static const char
+ xdigits[] = "0123456789abcdef",
+ digits[] = "0123456789";
+ int n, ch, tmp, dirty, bits;
+ const u_char *odst = dst;
+
+ ch = *src++;
+ if (ch == '0' && (src[0] == 'x' || src[0] == 'X')
+ && isascii(src[1]) && isxdigit(src[1])) {
+ /* Hexadecimal: Eat nybble string. */
+ if (size <= 0)
+ goto emsgsize;
+ *dst = 0, dirty = 0;
+ src++; /* skip x or X. */
+ while ((ch = *src++) != '\0' &&
+ isascii(ch) && isxdigit(ch)) {
+ if (isupper(ch))
+ ch = tolower(ch);
+ n = strchr(xdigits, ch) - xdigits;
+ assert(n >= 0 && n <= 15);
+ *dst |= n;
+ if (!dirty++)
+ *dst <<= 4;
+ else if (size-- > 0)
+ *++dst = 0, dirty = 0;
+ else
+ goto emsgsize;
+ }
+ if (dirty)
+ size--;
+ } else if (isascii(ch) && isdigit(ch)) {
+ /* Decimal: eat dotted digit string. */
+ for (;;) {
+ tmp = 0;
+ do {
+ n = strchr(digits, ch) - digits;
+ assert(n >= 0 && n <= 9);
+ tmp *= 10;
+ tmp += n;
+ if (tmp > 255)
+ goto enoent;
+ } while ((ch = *src++) != '\0' &&
+ isascii(ch) && isdigit(ch));
+ if (size-- <= 0)
+ goto emsgsize;
+ *dst++ = (u_char) tmp;
+ if (ch == '\0' || ch == '/')
+ break;
+ if (ch != '.')
+ goto enoent;
+ ch = *src++;
+ if (!isascii(ch) || !isdigit(ch))
+ goto enoent;
+ }
+ } else
+ goto enoent;
+
+ bits = -1;
+ if (ch == '/' && isascii(src[0]) && isdigit(src[0]) && dst > odst) {
+ /* CIDR width specifier. Nothing can follow it. */
+ ch = *src++; /* Skip over the /. */
+ bits = 0;
+ do {
+ n = strchr(digits, ch) - digits;
+ assert(n >= 0 && n <= 9);
+ bits *= 10;
+ bits += n;
+ } while ((ch = *src++) != '\0' &&
+ isascii(ch) && 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 = 4;
+ 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 >= 8 && bits < ((dst - odst) * 8))
+ bits = (dst - odst) * 8;
+ }
+ /* Extend network to cover the actual mask. */
+ while (bits > ((dst - odst) * 8)) {
+ if (size-- <= 0)
+ goto emsgsize;
+ *dst++ = '\0';
+ }
+ return (bits);
+
+ enoent:
+ errno = ENOENT;
+ return (-1);
+
+ emsgsize:
+ errno = EMSGSIZE;
+ return (-1);
+}
diff --git a/inetlib/c/inet_ntop b/inetlib/c/inet_ntop
new file mode 100644
index 0000000..5f655fe
--- /dev/null
+++ b/inetlib/c/inet_ntop
@@ -0,0 +1,197 @@
+/* Copyright (c) 1996 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 INTERNET SOFTWARE CONSORTIUM DISCLAIMS
+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
+ * CONSORTIUM 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.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char rcsid[] = "$Id$";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <arpa/nameser.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/errno.h>
+#include <stdio.h>
+
+#include "inetlib.h"
+
+#ifdef SPRINTF_CHAR
+# define SPRINTF(x) strlen(sprintf/**/x)
+#else
+# define SPRINTF(x) ((size_t)sprintf x)
+#endif
+
+/*
+ * WARNING: Don't even consider trying to compile this on a system where
+ * sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX.
+ */
+
+static const char *inet_ntop4(const u_char *src, char *dst, size_t size);
+static const char *inet_ntop6(const u_char *src, char *dst, size_t size);
+
+/* char *
+ * inet_ntop(af, src, dst, size)
+ * convert a network format address to presentation format.
+ * return:
+ * pointer to presentation format address (`dst'), or NULL (see errno).
+ * author:
+ * Paul Vixie, 1996.
+ */
+const char *
+inet_ntop(af, src, dst, size)
+ int af;
+ const void *src;
+ char *dst;
+ size_t size;
+{
+ switch (af) {
+ case AF_INET:
+ return (inet_ntop4(src, dst, size));
+ case AF_INET6:
+ return (inet_ntop6(src, dst, size));
+ default:
+ errno = EAFNOSUPPORT;
+ return (NULL);
+ }
+ /* NOTREACHED */
+}
+
+/* const char *
+ * inet_ntop4(src, dst, size)
+ * format an IPv4 address, more or less like inet_ntoa()
+ * return:
+ * `dst' (as a const)
+ * notes:
+ * (1) uses no statics
+ * (2) takes a u_char* not an in_addr as input
+ * author:
+ * Paul Vixie, 1996.
+ */
+static const char *
+inet_ntop4(src, dst, size)
+ const u_char *src;
+ char *dst;
+ size_t size;
+{
+ static const char fmt[] = "%u.%u.%u.%u";
+ char tmp[sizeof "255.255.255.255"];
+
+ if (SPRINTF((tmp, fmt, src[0], src[1], src[2], src[3])) > size) {
+ errno = ENOSPC;
+ return (NULL);
+ }
+ strcpy(dst, tmp);
+ return (dst);
+}
+
+/* const char *
+ * inet_ntop6(src, dst, size)
+ * convert IPv6 binary address into presentation (printable) format
+ * author:
+ * Paul Vixie, 1996.
+ */
+static const char *
+inet_ntop6(src, dst, size)
+ const u_char *src;
+ char *dst;
+ size_t size;
+{
+ /*
+ * Note that int32_t and int16_t need only be "at least" large enough
+ * to contain a value of the specified size. On some systems, like
+ * Crays, there is no such thing as an integer variable with 16 bits.
+ * Keep this in mind if you think this function should have been coded
+ * to use pointer overlays. All the world's not a VAX.
+ */
+ char tmp[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255"], *tp;
+ struct { int base, len; } best, cur;
+ u_int words[IN6ADDRSZ / INT16SZ];
+ int i;
+
+ /*
+ * Preprocess:
+ * Copy the input (bytewise) array into a wordwise array.
+ * Find the longest run of 0x00's in src[] for :: shorthanding.
+ */
+ memset(words, '\0', sizeof words);
+ for (i = 0; i < IN6ADDRSZ; i++)
+ words[i / 2] |= (src[i] << ((1 - (i % 2)) << 3));
+ best.base = -1;
+ cur.base = -1;
+ for (i = 0; i < (IN6ADDRSZ / INT16SZ); i++) {
+ if (words[i] == 0) {
+ if (cur.base == -1)
+ cur.base = i, cur.len = 1;
+ else
+ cur.len++;
+ } else {
+ if (cur.base != -1) {
+ if (best.base == -1 || cur.len > best.len)
+ best = cur;
+ cur.base = -1;
+ }
+ }
+ }
+ if (cur.base != -1) {
+ if (best.base == -1 || cur.len > best.len)
+ best = cur;
+ }
+ if (best.base != -1 && best.len < 2)
+ best.base = -1;
+
+ /*
+ * Format the result.
+ */
+ tp = tmp;
+ for (i = 0; i < (IN6ADDRSZ / INT16SZ); i++) {
+ /* Are we inside the best run of 0x00's? */
+ if (best.base != -1 && i >= best.base &&
+ i < (best.base + best.len)) {
+ if (i == best.base)
+ *tp++ = ':';
+ continue;
+ }
+ /* Are we following an initial run of 0x00s or any real hex? */
+ if (i != 0)
+ *tp++ = ':';
+ /* Is this address an encapsulated IPv4? */
+ if (i == 6 && best.base == 0 &&
+ (best.len == 6 || (best.len == 5 && words[5] == 0xffff))) {
+ if (!inet_ntop4(src+12, tp, sizeof tmp - (tp - tmp)))
+ return (NULL);
+ tp += strlen(tp);
+ break;
+ }
+ tp += SPRINTF((tp, "%x", words[i]));
+ }
+ /* Was it a trailing run of 0x00's? */
+ if (best.base != -1 && (best.base + best.len) == (IN6ADDRSZ / INT16SZ))
+ *tp++ = ':';
+ *tp++ = '\0';
+
+ /*
+ * Check for overflow, copy, and we're done.
+ */
+ if ((size_t)(tp - tmp) > size) {
+ errno = ENOSPC;
+ return (NULL);
+ }
+ strcpy(dst, tmp);
+ return (dst);
+}
diff --git a/inetlib/c/inet_pton b/inetlib/c/inet_pton
new file mode 100644
index 0000000..f62f59e
--- /dev/null
+++ b/inetlib/c/inet_pton
@@ -0,0 +1,217 @@
+/* Copyright (c) 1996 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 INTERNET SOFTWARE CONSORTIUM DISCLAIMS
+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
+ * CONSORTIUM 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.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char rcsid[] = "$Id$";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <arpa/nameser.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/errno.h>
+
+#include "inetlib.h"
+
+/*
+ * WARNING: Don't even consider trying to compile this on a system where
+ * sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX.
+ */
+
+static int inet_pton4(const char *src, u_char *dst);
+static int inet_pton6(const char *src, u_char *dst);
+
+/* int
+ * inet_pton(af, src, dst)
+ * convert from presentation format (which usually means ASCII printable)
+ * to network format (which is usually some kind of binary format).
+ * return:
+ * 1 if the address was valid for the specified address family
+ * 0 if the address wasn't valid (`dst' is untouched in this case)
+ * -1 if some other error occurred (`dst' is untouched in this case, too)
+ * author:
+ * Paul Vixie, 1996.
+ */
+int
+inet_pton(af, src, dst)
+ 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:
+ errno = EAFNOSUPPORT;
+ return (-1);
+ }
+ /* NOTREACHED */
+}
+
+/* int
+ * inet_pton4(src, dst)
+ * like inet_aton() but without all the hexadecimal and shorthand.
+ * return:
+ * 1 if `src' is a valid dotted quad, else 0.
+ * notice:
+ * does not touch `dst' unless it's returning 1.
+ * author:
+ * Paul Vixie, 1996.
+ */
+static int
+inet_pton4(src, dst)
+ const char *src;
+ u_char *dst;
+{
+ static const char digits[] = "0123456789";
+ int saw_digit, octets, ch;
+ u_char tmp[INADDRSZ], *tp;
+
+ saw_digit = 0;
+ octets = 0;
+ *(tp = tmp) = 0;
+ while ((ch = *src++) != '\0') {
+ const char *pch;
+
+ if ((pch = strchr(digits, ch)) != NULL) {
+ u_int new = *tp * 10 + (pch - digits);
+
+ 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, INADDRSZ);
+ return (1);
+}
+
+/* int
+ * inet_pton6(src, dst)
+ * convert presentation level address to network order binary form.
+ * return:
+ * 1 if `src' is a valid [RFC1884 2.2] address, else 0.
+ * notice:
+ * (1) does not touch `dst' unless it's returning 1.
+ * (2) :: in a full address is silently ignored.
+ * credit:
+ * inspired by Mark Andrews.
+ * author:
+ * Paul Vixie, 1996.
+ */
+static int
+inet_pton6(src, dst)
+ const char *src;
+ u_char *dst;
+{
+ static const char xdigits_l[] = "0123456789abcdef",
+ xdigits_u[] = "0123456789ABCDEF";
+ u_char tmp[IN6ADDRSZ], *tp, *endp, *colonp;
+ const char *xdigits, *curtok;
+ int ch, saw_xdigit;
+ u_int val;
+
+ memset((tp = tmp), '\0', IN6ADDRSZ);
+ endp = tp + IN6ADDRSZ;
+ colonp = NULL;
+ /* Leading :: requires some special handling. */
+ if (*src == ':')
+ if (*++src != ':')
+ return (0);
+ curtok = src;
+ saw_xdigit = 0;
+ val = 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 (val > 0xffff)
+ return (0);
+ saw_xdigit = 1;
+ continue;
+ }
+ if (ch == ':') {
+ curtok = src;
+ if (!saw_xdigit) {
+ if (colonp)
+ return (0);
+ colonp = tp;
+ continue;
+ }
+ if (tp + INT16SZ > endp)
+ return (0);
+ *tp++ = (u_char) (val >> 8) & 0xff;
+ *tp++ = (u_char) val & 0xff;
+ saw_xdigit = 0;
+ val = 0;
+ continue;
+ }
+ if (ch == '.' && ((tp + INADDRSZ) <= endp) &&
+ inet_pton4(curtok, tp) > 0) {
+ tp += INADDRSZ;
+ saw_xdigit = 0;
+ break; /* '\0' was seen by inet_pton4(). */
+ }
+ return (0);
+ }
+ if (saw_xdigit) {
+ if (tp + INT16SZ > endp)
+ return (0);
+ *tp++ = (u_char) (val >> 8) & 0xff;
+ *tp++ = (u_char) 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;
+ int i;
+
+ for (i = 1; i <= n; i++) {
+ endp[- i] = colonp[n - i];
+ colonp[n - i] = 0;
+ }
+ tp = endp;
+ }
+ if (tp != endp)
+ return (0);
+ memcpy(dst, tmp, IN6ADDRSZ);
+ return (1);
+}
diff --git a/inetlib/h/inetlib b/inetlib/h/inetlib
index bb516c5..3a8db6f 100644
--- a/inetlib/h/inetlib
+++ b/inetlib/h/inetlib
@@ -75,7 +75,11 @@ extern u_long inet_lnaof(struct in_addr in);
extern struct in_addr inet_makeaddr(u_long net, u_long host);
extern u_long inet_network(const char *cp);
extern u_long inet_netof(struct in_addr in);
-extern char *inet_ntoa(struct in_addr in);
+extern char *inet_net_ntop(int, const void *, int, char *, size_t);
+extern int inet_net_pton(int, const char *, void *, size_t);
+extern char *inet_ntoa(struct in_addr);
+extern const char *inet_ntop(int, const void *, char *, size_t);
+extern int inet_pton(int, const char *, void *);
extern struct hostent *namisipadr(const char *nam);
extern u_long ntohl(u_long x);
--
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