如何通过C语言获取主机WLAN下的IPv4地址,MAC地址,局域网网关IPv4地址
#include "stdio.h" #include "windows.h" void GetHostWLAN_IPv4_AND_MAC(char IPv4[], char MAC[],char GateWay[]); //获取WLAN下的IPv4和MAC地址,局域网网关IPv4地址(基于win10中文版编写) int main() { char IPv4[16] = { 0 }; char MAC[18] = { 0 }; char Gway[16] = { 0 }; GetHostWLAN_IPv4_AND_MAC(IPv4,MAC,Gway); printf("%s %d\n", Gway,strlen(Gway)); printf("%s %d\n", IPv4, strlen(IPv4)); printf("%s %d\n", MAC, strlen(MAC)); return 0; } void GetHostWLAN_IPv4_AND_MAC(char IPv4[],char MAC[],char GateWay[]) { memset(IPv4, 0, sizeof(IPv4)); memset(MAC, 0, sizeof(MAC)); system("ipconfig/all > E:\\ipconfig.txt"); FILE *fp = fopen("E:\\ipconfig.txt", "r"); if (!fp) { printf("failed to open file!"); exit(-1); } char strInfo[128] = { 0 }; bool find_wlan = false; bool find_mac = false; bool find_ipv4 = false; bool find_gateway = false; int i, pos; while (fgets(strInfo, 128, fp) != NULL) { if (strstr(strInfo, "WLAN") != NULL) find_wlan = true; if (find_wlan) { if (strstr(strInfo, "物理地址") != NULL) //获取MAC地址 { pos = 16; for (i = strlen(strInfo);; i--) { if (strInfo[i - 2] != ‘\0‘&&pos >= 0) { if (strInfo[i - 2] != ‘-‘) MAC[pos--] = strInfo[i - 2]; else MAC[pos--] = ‘:‘; } else { find_mac = true; break; } } } if (strstr(strInfo, "IPv4") != NULL) //获取IPv4地址 { for (i = 10;; i++) { if (strInfo[i] == ‘:‘) break; } pos = i+2; for (i=0;; i++,pos++) { if (strInfo[pos] != ‘\0‘&&strInfo[pos] != ‘(‘) IPv4[i] = strInfo[pos]; else { find_ipv4 = true; break; } } } if (strstr(strInfo, "默认网关") != NULL) //获取默认网关IPv4地址 { memset(strInfo, 0, 128); fgets(strInfo, 128, fp); //获取下一行 for (i = 0,pos = 0;; pos++) { if (strInfo[pos] == ‘\n‘) { find_gateway = true; break; } if (strInfo[pos]>=‘0‘&&strInfo[pos]<=‘9‘ || strInfo[pos]==‘.‘) GateWay[i++] = strInfo[pos]; } } } if (find_mac && find_ipv4 && find_gateway) break; memset(strInfo, 0, 128); } }
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