📄 iptvipconfig.txt
字号:
读取和写入IP的代码我来提供好了。
请注意被我注释掉的define和typedef，由于只是参考，我就不给你单独能运行的了。
是参考ifconfig代码，通过ioctl来做的。
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <netinet/in.h>
#include <unistd.h>
#include <string.h>
#include <arpa/inet.h>
#include <net/if.h>
#include <errno.h>
#include <features.h>
#include <netpacket/packet.h>
#include <net/ethernet.h>
#include <net/route.h>
#include <stdio.h>
#include "define.h"
#include "net.h"
//#define FAILURE 0
//#define SUCCESS 1
//typedef unsigned char UNS8; /* 8-bit */
//typedef unsigned short UNS16; /* 16-bit */
//typedef unsigned int UNS32; /* 32-bit */
//typedef unsigned long long int UNS64; /* 64-bit */
//typedef char S8; /* 8-bit */
//typedef short S16; /* 16-bit */
//typedef int S32; /* 32-bit */
//typedef long long int S64; /* 64-bit */
//typedef enum {
// FALSE,
// TRUE
//} BOOL;
#define m_MSG(format, args...) printf(format, ## args)
#define m_ERROR(terminal,format, args...) fprintf(terminal,format, ## args)
#define m_DEBUG(format, args...) printf(format, ## args)
S32 Setup_SetDefaultRoute(S32 fd, S8 * interface, UNS32 * route_addr)
{
struct rtentry rtent;
struct sockaddr_in *p;
memset(&rtent, 0, sizeof(struct rtentry));
p = (struct sockaddr_in *) &rtent.rt_dst;
p->sin_family = AF_INET;
p->sin_addr.s_addr = 0;
p = (struct sockaddr_in *) &rtent.rt_gateway;
p->sin_family = AF_INET;
p->sin_addr.s_addr = *route_addr;
p = (struct sockaddr_in *) &rtent.rt_genmask;
p->sin_family = AF_INET;
p->sin_addr.s_addr = 0;
rtent.rt_dev = interface;
rtent.rt_metric = 1;
rtent.rt_window = 0;
rtent.rt_flags = RTF_UP | RTF_GATEWAY;
if (ioctl(fd, SIOCADDRT, &rtent) == -1) {
if (errno == ENETUNREACH) { /* possibly gateway is over the bridge */
/* try adding a route to gateway first */
memset(&rtent, 0, sizeof(struct rtentry));
p = (struct sockaddr_in *) &rtent.rt_dst;
p->sin_family = AF_INET;
p->sin_addr.s_addr = *route_addr;
p = (struct sockaddr_in *) &rtent.rt_gateway;
p->sin_family = AF_INET;
p->sin_addr.s_addr = 0;
p = (struct sockaddr_in *) &rtent.rt_genmask;
p->sin_family = AF_INET;
p->sin_addr.s_addr = 0xffffffff;
rtent.rt_dev = interface;
rtent.rt_metric = 0;
rtent.rt_flags = RTF_UP | RTF_HOST;
if (ioctl(fd, SIOCADDRT, &rtent) == 0) {
memset(&rtent, 0, sizeof(struct rtentry));
p = (struct sockaddr_in *) &rtent.rt_dst;
p->sin_family = AF_INET;
p->sin_addr.s_addr = 0;
p = (struct sockaddr_in *) &rtent.
rt_gateway;
p->sin_family = AF_INET;
p->sin_addr.s_addr = *route_addr;
p = (struct sockaddr_in *) &rtent.
rt_genmask;
p->sin_family = AF_INET;
p->sin_addr.s_addr = 0;
rtent.rt_dev = interface;
rtent.rt_metric = 1;
rtent.rt_window = 0;
rtent.rt_flags = RTF_UP | RTF_GATEWAY;
if (ioctl(fd, SIOCADDRT, &rtent) == -1) {
m_ERROR(stderr,
"ioctl SIOCADDRT: %m\n");
return FAILURE;
}
}
} else {
m_ERROR(stderr, "ioctl SIOCADDRT: %m\n");
return FAILURE;
}
}
return SUCCESS;
}
//通过读取 /proc/net/route获取路由表
S32 Setup_GetRoute(FILE * fp, RT * rt)
{
S8 devname[64];
UNS32 d, g, m;
S32 flgs, ref, use, metric, mtu, win, ir;
S32 r;
if (fp == NULL) {
return FAILURE;
}
r = fscanf(fp, "%63s%x%x%X%d%d%d%x%d%d%d\n", devname, &d, &g, &flgs, &ref, &use, &metric, &m, &mtu, &win, &ir);
if (r != 11) {
if ((r < 0) && feof(fp)) {
/* EOF with no (nonspace) chars read. */
return FAILURE;
}
return FAILURE;
}
if (!(flgs & RTF_UP)) {
/* Skip interfaces that are down. */
return Setup_GetRoute(fp, rt);
}
rt->dst = d;
rt->mask = m;
rt->gw = g;
rt->flags = flgs;
return SUCCESS;
}
S32 Setup_ReadInterface(S8 * interface, UNS32 * ipaddr, UNS32 * netmaskaddr,
UNS32 * gwaddr)
{
S32 fd;
struct ifreq ifr;
struct sockaddr_in *our_ip;
RT rt;
S32 fret;
FILE *fp = NULL;
*ipaddr = 0;
*netmaskaddr = 0;
*gwaddr = 0;
memset(&ifr, 0, sizeof(struct ifreq));
if ((fd = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) >= 0) {
ifr.ifr_addr.sa_family = AF_INET;
strcpy(ifr.ifr_name, interface);
if (ipaddr) {
bzero(ipaddr, sizeof(UNS32));
if (ioctl(fd, SIOCGIFADDR, &ifr) == 0) {
our_ip =
(struct sockaddr_in *) &ifr.ifr_addr;
*ipaddr = our_ip->sin_addr.s_addr;
} else {
m_ERROR(stderr,
"SIOCGIFADDR failed, is the interface up and configured?: %m");
close(fd);
return FAILURE;
}
}
if (netmaskaddr) {
bzero(netmaskaddr, sizeof(UNS32));
if (ioctl(fd, SIOCGIFNETMASK, &ifr) == 0) {
our_ip =
(struct sockaddr_in *) &ifr.
ifr_netmask;
*netmaskaddr = our_ip->sin_addr.s_addr;
} else {
m_ERROR(stderr,
"SIOCGIFHWADDR failed!: %m");
close(fd);
return FAILURE;
}
}
} else {
m_ERROR(stderr, "socket failed!: %m");
return FAILURE;
}
close(fd);
if (gwaddr) {
bzero(gwaddr, sizeof(UNS32));
fp = fopen("/proc/net/route", "r");
if (fp == NULL) {
return FAILURE;
} else {
if (fscanf(fp, "%*[^\n]\n") < 0) { /* Skip the first line. */
/* Empty or missing line, or read error. */
return FAILURE;
}
}
while ((fret = Setup_GetRoute(fp, &rt)) == SUCCESS) {
if (rt.flags & RTF_GATEWAY) {
*gwaddr = rt.gw;
break;
}
}
fclose(fp);
if (fret != SUCCESS) {
return FAILURE;
}
}
return SUCCESS;
}
S32 Setup_WriteInterface(S8 * interface, UNS32 * ipaddr, UNS32 * netmaskaddr,
UNS32 * gwaddr)
{
S32 fd;
struct ifreq ifr;
struct sockaddr_in *p = (struct sockaddr_in *) &(ifr.ifr_addr);
memset(&ifr, 0, sizeof(struct ifreq));
if (interface) {
strcpy(ifr.ifr_name, interface);
} else {
return FAILURE;
}
if ((fd = socket(AF_INET, SOCK_STREAM, 0)) >= 0) {
ifr.ifr_addr.sa_family = AF_INET;
if (ipaddr) {
p->sin_addr.s_addr = *ipaddr;
if (ioctl(fd, SIOCSIFADDR, &ifr) == -1) { /* setting IP address */
m_ERROR(stderr, "ioctl SIOCSIFADDR: %m\n");
return FAILURE;
}
}
if (netmaskaddr) {
p->sin_addr.s_addr = *netmaskaddr;
if (ioctl(fd, SIOCSIFNETMASK, &ifr) == -1) { /* setting netmask */
p->sin_addr.s_addr = 0xffffffff; /* try 255.255.255.255 */
if (ioctl(fd, SIOCSIFNETMASK, &ifr) == -1) {
m_ERROR(stderr,
"ioctl SIOCSIFNETMASK: %m\n");
return FAILURE;
}
}
}
if (ipaddr && netmaskaddr) {
p->sin_addr.s_addr = *ipaddr | (~*netmaskaddr);
if (ioctl(fd, SIOCSIFBRDADDR, &ifr) == -1) { /* setting broadcast address */
m_ERROR(stderr,
"ioctl SIOCSIFBRDADDR: %m\n");
return FAILURE;
}
}
if (gwaddr) {
return Setup_SetDefaultRoute(fd, interface, gwaddr);
}
close(fd);
} else {
m_ERROR(stderr, "socket failed!: %m");
return FAILURE;
}
return SUCCESS;
}
还是给你个我测试时用的可以单独运行的吧，方便你直接改了后移植。
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <netinet/in.h>
#include <unistd.h>
#include <string.h>
#include <arpa/inet.h>
#include <net/if.h>
#include <errno.h>
#include <features.h>
#include <netpacket/packet.h>
#include <net/ethernet.h>
#include <net/route.h>
#include <stdio.h>
#define FAILURE 0
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -