init here

2025-11-26 21:32:41 +03:00
commit 33c97acade
91 changed files with 9155 additions and 0 deletions
--- a/си/suckit.c
+++ b/си/suckit.c
@@ -0,0 +1,121 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <unistd.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include "rt_api.h"
+
+
+int create_socket_fd(int port) {
+    int server_fd;
+    struct sockaddr_in address;
+    int opt = 1;
+
+    if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0) {
+        perror("socket failed");
+        exit(EXIT_FAILURE);
+    }
+
+    if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
+        perror("setsockopt SO_REUSEADDR");
+        exit(EXIT_FAILURE);
+    }
+
+#ifdef SO_REUSEPORT
+    if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
+        perror("setsockopt SO_REUSEPORT");
+        exit(EXIT_FAILURE);
+    }
+#endif
+
+    memset(&address, 0, sizeof(address));
+    address.sin_family = AF_INET;
+    address.sin_addr.s_addr = INADDR_ANY;
+    address.sin_port = htons(port);
+
+    if (bind(server_fd, (struct sockaddr*)&address, sizeof(address)) < 0) {
+        perror("bind failed");
+        exit(EXIT_FAILURE);
+    }
+
+    if (listen(server_fd, 3) < 0) {
+        perror("listen");
+        exit(EXIT_FAILURE);
+    }
+
+    return server_fd;
+}
+
+int accept_socket(int fd) {
+    int server_fd = fd;
+    struct sockaddr_in client_addr;
+    socklen_t addrlen = sizeof(client_addr);
+
+    int new_socket = accept(server_fd, (struct sockaddr*)&client_addr, &addrlen);
+
+    if (new_socket < 0) {
+        perror("accept");
+        exit(EXIT_FAILURE);
+    }
+
+    return new_socket;
+}
+
+void write_string(int socket, TString data) {
+    char* datastring = (char*) data->body;
+    write(socket, datastring, strlen(datastring));
+}
+
+void close_socket(int socket){
+    close(socket);
+}
+
+TString read_to_string(int socket, int bytes) {
+    char* buffer = malloc(bytes + 1);
+    int bytes_read = read(socket, buffer, bytes);
+
+    if(bytes_read < 0) {
+        bytes_read = 0;
+    }
+
+    TString string = tri_newString(bytes_read, bytes_read, buffer);
+
+    free(buffer);
+    return string;
+}
+
+int connect_socket(TString host, int port) {
+    char* chost = (char*) host->body;
+
+    struct addrinfo hints;
+    struct addrinfo* res = NULL;
+    char portstr[16];
+    snprintf(portstr, sizeof(portstr), "%d", port);
+
+    memset(&hints, 0, sizeof(hints));
+    hints.ai_family = AF_UNSPEC;
+    hints.ai_socktype = SOCK_STREAM;
+
+    int gai = getaddrinfo(chost, portstr, &hints, &res);
+    if (gai != 0) {
+        perror("getaddrinfo");
+        return -1;
+    }
+
+    int sockfd = -1;
+    for (struct addrinfo* p = res; p != NULL; p = p->ai_next) {
+        sockfd = socket(p->ai_family, p->ai_socktype, p->ai_protocol);
+        if (sockfd < 0) continue;
+        if (connect(sockfd, p->ai_addr, p->ai_addrlen) == 0) {
+            break; // connected
+        }
+        close(sockfd);
+        sockfd = -1;
+    }
+
+    freeaddrinfo(res);
+    return sockfd;
+}