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Add inet_pton(3).

This commit is contained in:
Jonas 'Sortie' Termansen 2016-07-01 18:24:00 +02:00
parent ba3b6d386e
commit 5de36cf449
2 changed files with 77 additions and 12 deletions
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2
libc/Makefile
View File

@ -17,6 +17,7 @@ ASFLAGS=
FREEOBJS=\
arpa/inet/inet_ntop.o \
arpa/inet/inet_pton.o \
assert/__assert.o \
c++/c++.o \
c++/op-new.o \
@ -317,7 +318,6 @@ wctype/wctype.o \
HOSTEDOBJS=\
arpa/inet/inet_addr.o \
arpa/inet/inet_ntoa.o \
arpa/inet/inet_pton.o \
blf/blowfish.o \
$(CPUDIR)/fork.o \
$(CPUDIR)/setjmp.o \

87
libc/arpa/inet/inet_pton.c
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2013 Jonas 'Sortie' Termansen.
* Copyright (c) 2016 Jonas 'Sortie' Termansen.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
@ -14,21 +14,86 @@
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* arpa/inet/inet_pton.c
* Internet address manipulation routines.
* Convert string to network address.
*/
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <string.h>
int inet_pton(int af, const char* restrict src, void* restrict dst)
{
(void) af;
(void) src;
(void) dst;
fprintf(stderr, "%s is not implemented yet, aborting.\n", __func__);
abort();
if ( af == AF_INET )
{
unsigned char ip[4];
size_t index = 0;
for ( int i = 0; i < 4; i++ )
{
if ( i && src[index++] != '.' )
return 0;
if ( src[index] < '0' || '9' < src[index] )
return 0;
int num = src[index++] - '0';
if ( num )
{
if ( '0' <= src[index] && src[index] <= '9' )
{
num = 10 * num + src[index++] - '0';
if ( '0' <= src[index] && src[index] <= '9' )
{
num = 10 * num + src[index++] - '0';
if ( 256 <= num )
return 0;
}
}
}
ip[i] = num;
}
if ( src[index] )
return 0;
memcpy(dst, ip, sizeof(ip));
return 1;
}
else if ( af == AF_INET6 )
{
unsigned char ip[16];
size_t index = 0;
// TODO: Support for :: syntax.
// TODO: Support for x:x:x:x:x:x:d.d.d.d syntax.
for ( int i = 0; i < 8; i++ )
{
if ( i && src[index++] != ':' )
return 0;
int num = 0;
for ( int j = 0; j < 4; j++ )
{
int dgt;
if ( '0' <= src[index] && src[index] <= '9' )
dgt = src[index] - '0';
else if ( 'a' <= src[index] && src[index] <= 'f' )
dgt = src[index] - 'a' + 10;
else if ( 'A' <= src[index] && src[index] <= 'F' )
dgt = src[index] - 'A' + 10;
else
{
if ( j == 0 )
return 0;
break;
}
num = num << 4 | dgt;
index++;
}
ip[2 * i + 0] = num >> 8 & 0xFF;
ip[2 * i + 1] = num >> 0 & 0xFF;
}
if ( src[index] )
return 0;
memcpy(dst, ip, sizeof(ip));
return 1;
}
else
return errno = EAFNOSUPPORT, -1;
}