move to src/main.c

src/has_internet.c

@@ -1,69 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <netdb.h>
-#include <sys/socket.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-bool has_internet() {
-    int ret;
-    
-    // https://www.man7.org/linux/man-pages/man3/getaddrinfo.3.html
-    struct addrinfo hints;
-    memset(&hints, 0, sizeof(hints));
-    hints.ai_family = AF_INET;
-    hints.ai_socktype = SOCK_STREAM;
-    hints.ai_flags = 0;
-    hints.ai_protocol = 0;
-    struct addrinfo *res, *rp;
-    ret = getaddrinfo("hopeless-cloud.xyz", "80", 0, &res);
-    if (ret != 0) {
-        // fprintf(stderr, "Couldn't getaddrinfo()\n");
-        return false;
-    }
-    int sockfd;
-    for (rp = res; rp != NULL; rp = rp->ai_next) {
-        // https://www.man7.org/linux/man-pages/man2/socket.2.html
-        sockfd = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol);
-        if (sockfd == -1) { continue; }
-        
-        // https://www.man7.org/linux/man-pages/man2/connect.2.html
-        if (connect(sockfd, rp->ai_addr, rp->ai_addrlen) == 0) { break; }
-        
-        close(sockfd);
-    }
-    freeaddrinfo(res);
-    if (rp == NULL) {
-        // fprintf(stderr, "Couldn't connect socket\n");
-        return false;
-    }
-    
-    // https://www.man7.org/linux/man-pages/man2/write.2.html
-    char *req_msg = "GET / HTTP/1.1\r\n\r\n";
-    if (write(sockfd, req_msg, strlen(req_msg)) != strlen(req_msg)) {
-        // fprintf(stderr, "Couldn't fully write to socket\n");
-        return false;
-    }
-    
-    // https://www.man7.org/linux/man-pages/man2/recv.2.html
-    size_t count = 1000000;
-    char buf[count];
-    if (recv(sockfd, buf, count-1, MSG_WAITALL) == -1 ) {
-        // fprintf(stderr, "Couldn't read from socket\n");
-        return false;
-    }
-    // printf("%s\n", buf);
-    close(sockfd);
-    return true;
-}
-
-int main() {
-    if (has_internet()) {
-        // printf("has internet\n");
-        return 0;
-    } else {
-        // printf("no internet\n");
-        return 1;
-    }
-}