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分享IPV6地址转换问题?
现在有一个IPV6的IP地址：string ip6 = "fe80::2e0:4cff:fe20:55db";
怎么把这个地址转换到一个in6_addr 变量里面？
string ip6 = "fe80::2e0:4cff:fe20:55db";
in6_addr adr6 = ?
怎么把这个地址转换到一个in6_addr 变量里面？
string ip6 = "fe80::2e0:4cff:fe20:55db";
in6_addr adr6 = ?
...全文
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西湖秀才 2011-06-17
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随便手写一个，XP+VS2008下测试通过，楼主试试！
#include "stdafx.h"
#include <Ws2tcpip.h >
static union
{
char c[4];
unsigned long l;
}endian_test ={'l','?','?','b'};
#define ENDIAN_NESS ((char)endian_test.l)
int Count(char * pointer,bool bNoDoubleColon,unsigned short * Word)
{
int i;
for( i=0;i<8;i++)
{
while(*pointer!=':'&&*pointer!='\0')
{
pointer++;
Word[i]++;
}
pointer++;
if(!bNoDoubleColon&&*pointer=='\0')
{
break;
}
}
return (i==8)?i:i+1;
}
void CopyData(char * pointer,int num,unsigned short * Word)
{
int nValue=0;
char buf[5];
for (int i=0;i<num;i++)
{
nValue=0;
memset(buf,0,sizeof(buf));
strncpy(buf,pointer,Word[i]);
pointer+=(Word[i]+1);
sscanf_s(buf,"%x",&nValue);
Word[i]=nValue;
}
}
void Inet6_Addr(char * Ipv6Str,PIN6_ADDR pAddr)
{
char * pointer;
unsigned short Word[8]={0};
int nNum;
char buf[5]={0};
char * Pos=strstr(Ipv6Str,"::");
if (Pos==NULL) //No ::
{
int n=Count(Ipv6Str,TRUE,Word);
pointer=Ipv6Str;
CopyData(pointer,n,Word);
}
else
{
if (strlen(Ipv6Str)==2) // Only ::
{
return;
}
int nPos=Pos-Ipv6Str;
if (nPos==0) //:: start
{
pointer=Ipv6Str+2;
nNum=Count(pointer,FALSE,Word);
CopyData(pointer,nNum,Word);
MoveMemory(&Word[8-nNum],&Word[0],(nNum)*sizeof(unsigned short));
ZeroMemory(&Word[0],(8-nNum)*sizeof(unsigned short));
}
else if (nPos==strlen(Ipv6Str)-2) //:: end
{
char cTemp[16]={0};
strncpy(cTemp,Ipv6Str,nPos);
pointer=cTemp;
nNum=Count(pointer,FALSE,Word);
CopyData(pointer,nNum,Word);
}
else //:: middle
{
unsigned short Temp[8]={0};
char cTemp1[16]={0};
char cTemp2[16]={0};
strncpy(cTemp1,Ipv6Str,nPos);
strncpy(cTemp2,Ipv6Str+nPos+2,strlen(Ipv6Str)-nPos-2);
pointer=cTemp1;
nNum=Count(pointer,FALSE,Word);
CopyData(pointer,nNum,Word);
pointer=cTemp2;
nNum=Count(pointer,FALSE,Temp);
CopyData(pointer,nNum,Temp);
MoveMemory(&Word[8-nNum],&Temp[0],(nNum)*sizeof(unsigned short));
}
}
if (ENDIAN_NESS=='l') //little endian
{
for(int i=0;i<8;i++)
{
if(Word[i]!=0)
{
unsigned short temp;
temp=Word[i]>>8&0x00FF;
Word[i]= Word[i]<<8;
Word[i]|=temp;
}
}
}
memcpy(pAddr->u.Word,Word,sizeof(Word));
}
int _tmain(int argc, _TCHAR* argv[])
{
IN6_ADDR in6Addr;
ZeroMemory(&in6Addr,sizeof(in6Addr));
/*printf("IP Address:%s\n","1A2:24:3:4D:5:6C:7:8FE");
Inet6_Addr("1A2:24:3:4D:5:6C:7:8FE",&in6Addr);
printf("IP Address:%s\n","::6C:7:8FE");
Inet6_Addr("::6C:7:8FE",&in6Addr);
printf("IP Address:%s\n","6C:7:8FE::");
Inet6_Addr("6C:7:8FE::",&in6Addr);*/
printf("IP Address:%s\n","6C:7:8FE::123:5E");
Inet6_Addr("6C:7:8FE::123:5E",&in6Addr);
printf("After Translate:\n");
for (int i=0;i<8;i++)
{
printf(" Word[%d]:0x%04x",i,in6Addr.u.Word[i]);
}
return 0;
}
sharptiger123 2011-06-16
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用ipV6 必须先安装 系统自带的 ipv6 协议
西湖秀才 2011-06-16
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是在不行自己定义个，不麻烦吧
giant1st 2011-06-16
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参考：http://blog.csdn.net/sunboy_2050/archive/2010/12/27/6100734.aspx
IPv4：
IP字符串 ——》 网络字节流
inet_addr、inet_network、inet_aton
程序代码：
IPv4：
IP字符串 ——》 网络字节流
inet_addr、inet_network、inet_aton
程序代码：
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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/types.h>
int main()
{
char ip[] = "192.168.0.74";
long r1, r2, r3; //long
struct in_addr addr;
r1 = inet_addr(ip); //返回网络字节序
if(-1 == r1){
printf("inet_addr return -1\n");
}else{
printf("inet_addr ip: %ld\n", r1);
}
r2 = inet_network(ip); //返回主机字节序
if(-1 == r2){
printf("inet_addr return -1\n");
}else{
printf("inet_network ip: %ld\n", r2);
printf("inet_network ip: %ld\n", ntohl(r2)); //ntohl: 主机字节序 ——> 网络字节序
}
r3 = inet_aton(ip, &addr); //返回网络字节序
if(0 == r3){
printf("inet_aton return -1\n");
}else{
printf("inet_aton ip: %ld\n", addr.s_addr);
}
/***** 批量注释的一种方法 *****/
#if 0
r3 = inet_aton(ip, addr);
if(0 == r3){
printf("inet_aton return -1\n");
}else{
printf("inet_aton ip: %ld\n", ntohl(addr.s_addr));
}
#endif
return 0;
}
运行结果：
[work@db-testing-com06-vm3.db01.baidu.com net]$ gcc -W -o inet_addr inet_addr.c
[work@db-testing-com06-vm3.db01.baidu.com net]$ ./inet_addr
inet_addr ip: 1241557184
inet_network ip: -1062731702
inet_network ip: 1241557184
inet_aton ip: 1241557184
--------------------------------------------------------------------------
IP字符串 《——》 网络字节流
inet_addr、inet_aton、inet_ntoa
程序代码：
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#include <stdio.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <string.h>
int main(int argc, char *argv[])
{
char ip1[] = "192.168.0.74";
char ip2[] = "211.100.21.179";
struct in_addr addr1, addr2;
long l1, l2;
l1 = inet_addr(ip1); //IP字符串——》网络字节
l2 = inet_addr(ip2);
printf("IP1: %s\nIP2: %s\n", ip1, ip2);
printf("Addr1: %ld\nAddr2: %ld\n", l1, l2);
memcpy(&addr1, &l1, 4); //复制4个字节大小
memcpy(&addr2, &l2, 4);
printf("%s <--> %s\n", inet_ntoa(addr1), inet_ntoa(addr2)); //注意：printf函数自右向左求值、覆盖
printf("%s\n", inet_ntoa(addr1)); //网络字节 ——》IP字符串
printf("%s\n", inet_ntoa(addr2));
return 0;
}
运行结果：
[work@db-testing-com06-vm3.db01.baidu.com net]$ gcc -W -o inet_ntoa inet_ntoa.c
[work@db-testing-com06-vm3.db01.baidu.com net]$ ./inet_ntoa
IP1: 192.168.0.74
IP2: 211.100.21.179
Addr1: 1241557184
Addr2: 3004523731
192.168.0.74 <--> 192.168.0.74
192.168.0.74
211.100.21.179
=============================================================
IPv6：
IPv4 字符串 《——》网络字节流
inet_pton、inet_ntop
程序代码：
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#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
int main()
{
char ip[] = "192.168.0.74";
struct in_addr addr;
int ret = inet_pton(AF_INET, ip, (void *)&addr); //IP字符串 ——》网络字节流
if(0 == ret){
printf("inet_pton error, return 0\n");
return -1;
}else{
printf("inet_pton ip: %ld\n", addr.s_addr);
printf("inet_pton ip: 0x%x\n", addr.s_addr);
}
const char *pstr = inet_ntop(AF_INET, (void *)&addr, ip, 128); //网络字节流 ——》IP字符串
if(NULL == pstr){
printf("inet_ntop error, return NULL\n");
return -1;
}else{
printf("inet_ntop ip: %s\n", ip);
}
return 0;
}
运行结果：
[work@db-testing-com06-vm3.db01.baidu.com net]$ gcc -W -o inet_ptoa inet_ptoa.c
[work@db-testing-com06-vm3.db01.baidu.com net]$ ./inet_ptoa
inet_pton ip: 1241557184
inet_pton ip: 0x4a00a8c0
inet_ntop ip: 192.168.0.74
--------------------------------------------------------------------------
IPv6 字符串 《——》网络字节流
inet_pton、inet_ntop
程序代码：
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <arpa/inet.h>
int
main(int argc, char **argv)
{
unsigned char buf[sizeof(struct in6_addr)];
int domain, s;
char str[INET6_ADDRSTRLEN];
if(argc != 3){
fprintf(stderr, "usage: %s {i4|i6|<num>} string\n", argv[0]);
exit(EXIT_FAILURE);
}
domain = (strcmp(argv[1], "i4") == 0) ? AF_INET:(strcmp(argv[1], "i6") == 0) ? AF_INET6 : atoi(argv[1]);
//IP字符串 ——》网络字节流
s = inet_pton(domain, argv[2], buf);
if(s<=0){
if(0 == s)
fprintf(stderr, "Not in presentation format\n");
else
perror("inet_pton");
exit(EXIT_FAILURE);
}
//网络字节流 ——》IP字符串
if(inet_ntop(domain, buf, str, INET6_ADDRSTRLEN) == NULL){
perror("inet ntop\n");
exit(EXIT_FAILURE);
}
printf("%s\n", str);
exit(EXIT_SUCCESS);
}
运行结果：
[work@db-testing-com06-vm3.db01.baidu.com net]$ gcc -W -o inet_ptoa6 inet_ptoa6.c
[work@db-testing-com06-vm3.db01.baidu.com net]$ ./inet_ptoa6 i6 0:0:0:0:0:FFFF:204.152.189.116
::ffff:204.152.189.116
[work@db-testing-com06-vm3.db01.baidu.com net]$ ./inet_ptoa6 i4 204.152.189.116
204.152.189.116
mukefei77 2011-06-13
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LONG NTAPI RtlIpv6StringToAddress(
__in PCTSTR S,
__out PCTSTR *Terminator,
__out IN6_ADDR *Addr
);
LPTSTR NTAPI RtlIpv6AddressToString(
__in const IN6_ADDR *Addr,
__out LPTSTR S
);rroamer 2011-06-13
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另外注明一下，需要能在XP和WINDWOS 7下都可以用的，
