mod1

2026-09-24 09:10:14 +00:00 · 2023-11-01 11:43:41 +03:00
parent 65b45ab70b
commit 96376650d2
5 changed files with 187 additions and 0 deletions
@@ -0,0 +1,146 @@
+#include <netinet/in.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <signal.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#define FIN "exit"
+#define FINS "exit_s"
+#define FINC "exit_c"
+#define BUF 1024
+#define DATA "Answer"
+#define GET "GET"
+#define HTTPOK "HTTP/1.1 200 OK\n\n"
+#define INDEX "index.html"
+// #include "data.h"
+
+void session(int msgsock)
+{
+    int sock;
+    socklen_t length;
+    struct sockaddr_in server;
+    char ibuf[BUF];
+    char obuf[BUF];
+    int rval, sval;
+    int fd, offt;
+    do
+    {
+        memset(ibuf, 0, BUF);
+        if ((rval = read(msgsock, ibuf, 1024)) == -1)
+            perror("reading stream message");
+        dprintf(1, "-[%d]\n", rval);
+        if (rval == 0)
+            printf("Connection finished\n");
+        else
+        {
+            dprintf(1, "[%s]\n", ibuf);
+            memset(obuf, 0, BUF);
+            if (!strncmp(ibuf, GET, 3))
+            {
+#ifdef INDEX
+                strcpy(obuf, HTTPOK);
+                offt = strlen(obuf);
+                fd = open(INDEX, O_RDONLY);
+                read(fd, obuf + offt, BUF - offt);
+                close(fd);
+#else
+                strcpy(obuf, DATA1);
+#endif
+            }
+            else
+            {
+                strcpy(obuf, DATA);
+            }
+            sval = send(msgsock, obuf, strlen(obuf), 0);
+            dprintf(1, "Sent [%d]\n", sval);
+        }
+    } while ((rval > 0) && (strncmp(ibuf, GET, 3)));
+    exit(0);
+}
+
+int main(int argc, char *argv[])
+{
+    int sock;
+    socklen_t length;
+    struct sockaddr_in server;
+    int msgsock;
+    pid_t pid;
+    const int enable = 1;
+
+    sock = socket(AF_INET, SOCK_STREAM, 0);
+    if (sock == -1)
+    {
+        perror("opening stream socket");
+        exit(1);
+    }
+    if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &enable, sizeof(int)) < 0)
+        exit(2);
+    server.sin_family = AF_INET;
+    server.sin_addr.s_addr = htonl(INADDR_ANY);
+    if (argc == 2)
+        server.sin_port = htons(atoi(argv[1]));
+    else
+        server.sin_port = 0;
+
+    if (bind(sock, (struct sockaddr *)&server, sizeof server) == -1)
+    {
+        perror("binding stream socket");
+        exit(1);
+    }
+
+    length = sizeof server;
+    if (getsockname(sock, (struct sockaddr *)&server, &length) == -1)
+    {
+        perror("getting socket name");
+        exit(1);
+    }
+    printf("Socket port %d\n", ntohs(server.sin_port));
+
+    listen(sock, 5);
+    pid_t cpid;
+    do
+    {
+        if ((msgsock = accept(sock, (struct sockaddr *)NULL, (socklen_t *)NULL)) == -1)
+            perror("accept");
+        else
+        {
+            cpid = fork();
+            if (cpid == 0)
+            {
+                session(msgsock);
+            }
+        }
+        close(msgsock);
+    } while (1);
+    /*
+    do {
+       if ((msgsock = accept(sock,(struct sockaddr *) NULL,(socklen_t *) NULL)) == -1)
+          perror("accept");
+       else
+       do {
+         memset(ibuf, 0, BUF);
+         if ((rval = read(msgsock, ibuf, 1024)) == -1) perror("reading stream message");
+         dprintf(1, "-[%d]\n", rval);
+         if (rval == 0) printf("Connection finished\n");
+         else{
+             dprintf(1, "[%s]\n", ibuf);
+             memset(obuf, 0, BUF);
+             if (!strncmp(ibuf, GET, 3)){
+                 strcpy(obuf, DATA1);
+             }else{
+                 strcpy(obuf, DATA);
+             }
+             sval = send(msgsock, obuf, strlen(obuf), 0);
+             dprintf(1, "Sent [%d]\n", sval);
+         }
+       } while ((rval > 0) && (strncmp(ibuf, GET, 3)));
+     close(msgsock);
+    } while (strcmp(ibuf, FIN))
+    */
+    exit(0);
+}