Skip to content
GitLab
Menu
Projects
Groups
Snippets
Loading...
Help
Help
Support
Community forum
Keyboard shortcuts
?
Submit feedback
Contribute to GitLab
Sign in / Register
Toggle navigation
Menu
Open sidebar
ISC Open Source Projects
BIND
Commits
a6d40879
Commit
a6d40879
authored
Feb 02, 1999
by
Bob Halley
Browse files
add inet_pton
parent
a3c5ba00
Changes
2
Hide whitespace changes
Inline
Side-by-side
lib/isc/include/isc/inet.h
View file @
a6d40879
...
...
@@ -33,6 +33,13 @@ char *isc_inet_ntop(int af, const void *src, char *dst, size_t size);
#define isc_inet_ntop inet_ntop
#endif
#ifdef NEED_INET_PTON
int
isc_inet_pton
(
int
af
,
const
char
*
src
,
void
*
dst
);
#else
#define isc_inet_ntop inet_ntop
#endif
#ifdef NEED_INET_ATON
int
isc_inet_aton
(
const
char
*
cp
,
struct
in_addr
*
addr
);
#else
...
...
lib/isc/inet_pton.c
0 → 100644
View file @
a6d40879
/*
* 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 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: inet_pton.c,v 1.1 1999/02/02 00:37:09 halley Exp $"
;
#endif
/* LIBC_SCCS and not lint */
#include <config.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>
#define NS_INT16SZ 2
#define NS_INADDRSZ 4
#define NS_IN6ADDRSZ 16
/*
* 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
* isc_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
isc_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
[
NS_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
,
NS_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
[
NS_IN6ADDRSZ
],
*
tp
,
*
endp
,
*
colonp
;
const
char
*
xdigits
,
*
curtok
;
int
ch
,
saw_xdigit
;
u_int
val
;
memset
((
tp
=
tmp
),
'\0'
,
NS_IN6ADDRSZ
);
endp
=
tp
+
NS_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
+
NS_INT16SZ
>
endp
)
return
(
0
);
*
tp
++
=
(
u_char
)
(
val
>>
8
)
&
0xff
;
*
tp
++
=
(
u_char
)
val
&
0xff
;
saw_xdigit
=
0
;
val
=
0
;
continue
;
}
if
(
ch
==
'.'
&&
((
tp
+
NS_INADDRSZ
)
<=
endp
)
&&
inet_pton4
(
curtok
,
tp
)
>
0
)
{
tp
+=
NS_INADDRSZ
;
saw_xdigit
=
0
;
break
;
/* '\0' was seen by inet_pton4(). */
}
return
(
0
);
}
if
(
saw_xdigit
)
{
if
(
tp
+
NS_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
,
NS_IN6ADDRSZ
);
return
(
1
);
}
Write
Preview
Markdown
is supported
0%
Try again
or
attach a new file
.
Attach a file
Cancel
You are about to add
0
people
to the discussion. Proceed with caution.
Finish editing this message first!
Cancel
Please
register
or
sign in
to comment