Created
September 13, 2018 13:14
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| #include <sys/socket.h> | |
| #include <netinet/tcp.h> | |
| #include <unistd.h> | |
| #include <netdb.h> | |
| #include <netinet/in.h> | |
| #include <arpa/inet.h> | |
| #include <iostream> | |
| #include <cerrno> | |
| #include <cstdlib> | |
| #include <cstdio> | |
| #include <cstring> | |
| #include <curl/curl.h> | |
| #include <ifaddrs.h> | |
| #include <net/if.h> | |
| bool check_connection(char* ifname, char* test_server){ | |
| CURL *curl = curl_easy_init(); | |
| CURLcode res; | |
| if(curl){ | |
| curl_easy_setopt(curl, CURLOPT_URL, test_server); | |
| curl_easy_setopt(curl, CURLOPT_INTERFACE, ifname); | |
| curl_easy_setopt(curl, CURLOPT_NOBODY, 1L); | |
| curl_easy_setopt(curl, CURLOPT_TIMEOUT, 1L); | |
| res = curl_easy_perform(curl); | |
| } | |
| curl_easy_cleanup(curl); | |
| return (res == CURLE_OK); | |
| } | |
| int main(int argc, char** argv){ | |
| if(argc < 2){ | |
| printf("Need a argument to be test server\n"); | |
| exit(EXIT_FAILURE); | |
| } | |
| struct ifaddrs *ifaddr, *ifa; | |
| if(getifaddrs(&ifaddr) == -1){ | |
| perror("getifaddrs()"); | |
| exit(EXIT_FAILURE); | |
| } | |
| for(ifa = ifaddr; ifa != nullptr ; ifa = ifa->ifa_next) { | |
| bool has_it = false; | |
| if(ifa->ifa_addr->sa_family == AF_PACKET){ | |
| has_it = check_connection(ifa->ifa_name, argv[1]); | |
| } else { | |
| continue; | |
| } | |
| printf("%*s: %s\n", | |
| IFNAMSIZ, | |
| ifa->ifa_name, | |
| has_it ? "[Route to internet]" : "[-----------------]" | |
| ); | |
| } | |
| freeifaddrs(ifaddr); | |
| exit(EXIT_SUCCESS); | |
| } | |
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