1. Teil komplett
This commit is contained in:
Lukas Nowy
255
client.c
Normal file
255
client.c
Normal file
@@ -0,0 +1,255 @@
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/* myclient.c */
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdbool.h>
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#define BUF 1024
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void remN(char *s) {
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char *p2 = s;
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while(*s != '\0') {
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if(*s != '\t' && *s != '\n') {
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*p2++ = *s++;
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} else {
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++s;
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}
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}
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*p2 = '\0';
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}
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bool startsWith(const char *pre, const char *str)
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{
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size_t lenpre = strlen(pre),
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lenstr = strlen(str);
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return lenstr < lenpre ? false : memcmp(pre, str, lenpre) == 0;
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}
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int main (int argc, char **argv) {
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int create_socket;
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char buffer[BUF];
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struct sockaddr_in address;
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int size;
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if( argc < 3 ){
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printf("Usage: %s ServerAdresse Port\n", argv[0]);
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exit(EXIT_FAILURE);
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}
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if ((create_socket = socket (AF_INET, SOCK_STREAM, 0)) == -1)
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{
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perror("Socket error");
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return EXIT_FAILURE;
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}
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memset(&address,0,sizeof(address));
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address.sin_family = AF_INET;
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address.sin_port = htons (atoi(argv[2]));
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inet_aton (argv[1], &address.sin_addr);
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if (connect ( create_socket, (struct sockaddr *) &address, sizeof (address)) == 0)
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{
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printf ("Connection with server (%s) established\n", inet_ntoa (address.sin_addr));
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size=recv(create_socket,buffer,BUF-1, 0);
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if (size>0)
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{
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buffer[size]= '\0';
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printf("%s",buffer);
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}
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}
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else
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{
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perror("Connect error - no server available");
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return EXIT_FAILURE;
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}
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do {
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//command vom user überprüfen
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char command[6] = "";
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printf ("\nEnter Command: \n");
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fgets (command, 6, stdin);
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//je nach command wird was audgeführt
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if(startsWith("send", command) == true) {
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char sender[8] = "";
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char empfaenger[8] = "";
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char betreff[80] = "";
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char nachricht[128] = "";
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char bufferString[BUF] = "";
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strcpy(bufferString, "");
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strcat(bufferString, "send");
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//User Dateneingabe und daten einlesen
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printf("<Sender max. 8 Zeichen>\n");
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fgets (sender, 8, stdin);
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printf("<Empfänger max. 8 Zeichen>\n");
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fgets (empfaenger, 8, stdin);
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printf("<Betreff max. 80 Zeichen>\n");
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fgets (betreff, 80, stdin);
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printf("<Nachricht, beliebige Anzahl an Zeilen>\n");
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fgets (nachricht, 80, stdin);
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//Buffer formatieren
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strcat(bufferString, ";");
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strcat(bufferString, sender);
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strcat(bufferString, ";");
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strcat(bufferString, empfaenger);
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strcat(bufferString, ";");
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strcat(bufferString, betreff);
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strcat(bufferString, ";");
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strcat(bufferString, nachricht);
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remN(bufferString);
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//printf("Buffer: %s", bufferString);
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send(create_socket, bufferString, strlen (bufferString), 0);
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//Response vom Server (OK oder ERR) empfangen und ausgeben
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char readBuffer[BUF] = "";
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int valread = read(create_socket , readBuffer, 1024);
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printf("\n%s\n", readBuffer);
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}
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else if(startsWith("list", command) == true) {
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char bufferString[BUF] = "list";
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char username[8] = "";
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char p[20] = "";
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int counter = 0;
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printf("<Username max. 8 Zeichen>\n");
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fgets (username, 8, stdin);
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printf("<Posteingang oder Postausgang>\n");
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fgets (p, 20, stdin);
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strcat(bufferString, ";");
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strcat(bufferString, username);
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strcat(bufferString, ";");
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strcat(bufferString, p);
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remN(bufferString);
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printf("%s ", bufferString);
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send(create_socket, bufferString, strlen (bufferString), 0);
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char readBuffer[BUF] = "";
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int valread = read(create_socket , readBuffer, 1024);
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char delimiter[] = ";";
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char *ptr;
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ptr = strtok(readBuffer, delimiter);
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while(ptr != NULL) {
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if(strcmp(ptr, ".") == 0) {
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}
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else if(strcmp(ptr, "..") == 0) {
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}
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else if (counter == 0) {
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printf("<Anzahl der Nachrichten für den User: %s>\n", ptr);
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}
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else {
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printf("Betreff: %s \n", ptr);
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//printf("%.*s", 17, ptr + 5);
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}
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counter = counter + 1;
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// naechsten Abschnitt erstellen
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ptr = strtok(NULL, delimiter);
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}
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}
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else if(startsWith("read", command) == true) {
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char bufferString[BUF] = "read";
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char username[8] = "";
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char nid[80] = "";
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char folder[20] = "";
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printf("<Username max. 8 Zeichen>\n");
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fgets (username, 8, stdin);
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printf("<posteingang oder postausgang>\n");
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fgets (folder, 20, stdin);
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printf("<Nachrichten-Nummer>\n");
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fgets (nid, 80, stdin);
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strcat(bufferString, ";");
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strcat(bufferString, username);
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strcat(bufferString, ";");
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strcat(bufferString, folder);
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strcat(bufferString, ";");
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strcat(bufferString, nid);
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remN(bufferString);
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//printf("%s ", bufferString);
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send(create_socket, bufferString, strlen (bufferString), 0);
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//strcpy(buffer, "");
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//buffer[size]= '\0';
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char readBuffer[BUF] = "";
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int valread = read(create_socket , readBuffer, 1000);
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printf("\n%s\n", readBuffer );
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}
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else if(startsWith("del", command) == true) {
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//printf("\n del");
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char username[8] = "";
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char nachrichtennummer[80] = "";
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char bufferString[BUF] = "del";
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char p[20] = "";
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printf("<Username max. 8 Zeichen>\n");
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fgets (username, 8, stdin);
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printf("<Posteingang oder Postausgang>\n");
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fgets (p, 20, stdin);
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printf("<Nachrichten-Nummer>\n");
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fgets (nachrichtennummer, 80, stdin);
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strcat(bufferString, ";");
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strcat(bufferString, username);
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strcat(bufferString, ";");
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strcat(bufferString, p);
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strcat(bufferString, ";");
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strcat(bufferString, nachrichtennummer);
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remN(bufferString);
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//printf("%s ", bufferString);
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send(create_socket, bufferString, strlen (bufferString), 0);
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char readBuffer[BUF] = "";
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int valread = read(create_socket , readBuffer, 1024);
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printf("\n%s\n", readBuffer );
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}
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else if(startsWith("quit", command) == true) {
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strcpy(buffer, "quit\n");
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}
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else {
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printf("DAS IST KEIN COMMAND!!!!!");
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}
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}
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while (strcmp (buffer, "quit\n") != 0);
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close (create_socket);
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return EXIT_SUCCESS;
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}
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4
readme.txt
Normal file
4
readme.txt
Normal file
@@ -0,0 +1,4 @@
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SEND: send;sender;empänger;betreff;nachricht
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LIST: list:username;postEinAusgang
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READ: read;username;postEinAusgang;nid
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DEL: del;username;postEinAusgang;nid
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482
server.c
Normal file
482
server.c
Normal file
@@ -0,0 +1,482 @@
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/* myserver.c */
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/types.h> /* Linux/UNIX */
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#include <sys/stat.h> /* Linux/UNIX */
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#include <stdbool.h>
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#include <dirent.h>
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#include <time.h>
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#define MAXCHAR 1000
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#define BUF 1024
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bool startsWith(const char *pre, const char *str)
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{
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size_t lenpre = strlen(pre),
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lenstr = strlen(str);
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return lenstr < lenpre ? false : memcmp(pre, str, lenpre) == 0;
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}
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void mstore_data(const char *filepath, const char *data)
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{
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FILE *fp = fopen(filepath, "ab");
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if (fp != NULL)
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{
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fputs(data, fp);
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fclose(fp);
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}
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}
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int countFiles(char path[]) {
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int file_count = 0;
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DIR * dirp;
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struct dirent * entry;
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dirp = opendir(path); /* There should be error handling after this */
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while ((entry = readdir(dirp)) != NULL) {
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if (entry->d_type == DT_REG) { /* If the entry is a regular file */
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file_count++;
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}
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}
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closedir(dirp);
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return file_count;
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}
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int main (int argc, char **argv) {
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int create_socket, new_socket;
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socklen_t addrlen;
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char buffer[BUF];
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int size;
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struct sockaddr_in address, cliaddress;
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if( argc < 3 ){
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printf("Usage: %s S Port Verzeichniss\n", argv[0]);
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exit(EXIT_FAILURE);
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}
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create_socket = socket (AF_INET, SOCK_STREAM, 0);
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memset(&address,0,sizeof(address));
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address.sin_family = AF_INET;
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address.sin_addr.s_addr = INADDR_ANY;
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address.sin_port = htons (atoi(argv[1]));
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if (bind ( create_socket, (struct sockaddr *) &address, sizeof (address)) != 0) {
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perror("bind error");
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return EXIT_FAILURE;
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}
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listen (create_socket, 5);
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addrlen = sizeof (struct sockaddr_in);
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//Verzeichniss erstellen
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mkdir(argv[2], 0711);
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while (1) {
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printf("Waiting for connections...\n");
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new_socket = accept ( create_socket, (struct sockaddr *) &cliaddress, &addrlen );
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if (new_socket > 0)
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{
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printf ("Client connected from %s:%d...\n", inet_ntoa (cliaddress.sin_addr),ntohs(cliaddress.sin_port));
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strcpy(buffer,"Welcome to myserver, Please enter your command:\n");
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send(new_socket, buffer, strlen(buffer),0);
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}
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//ab hier
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do {
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size = recv (new_socket, buffer, BUF-1, 0);
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if( size > 0)
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{
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buffer[size] = '\0';
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//Überprüfen welchen command der client eingegeben hat,
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// wenn command nicht zutreffend error zurücksenden
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if(startsWith("send", buffer) == true) {
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char delimiter[] = ";";
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char *ptr;
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//den buffer mit dem seperator splitten
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ptr = strtok(buffer, delimiter);
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int counter = 0;
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char filename1[] = "";
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char filename2[] = "";
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char sender[8] = "";
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char content[] = "";
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char empfaenger[8] = "";
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char betreff[80] = "";
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char nid[100] = "";
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//timestamp als ersten teil der id erstellen
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char ts[20];
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time_t now = time(NULL);
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strftime(ts, 20, "%Y-%m-%d%H:%M:%S", localtime(&now));
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//den gesplitteten buffer schritt für schritt durchgehen
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while(ptr != NULL) {
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//printf("Abschnitt gefunden: %s\n", ptr);
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//sender auslesen, ordner für sender erstellen, wenn nicht vorhanden
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if (counter == 1) {
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struct stat st = {0};
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char dir[] = "./data/postausgang/";
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strcat(dir, ptr);
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if (stat(dir, &st) == -1) {
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mkdir(dir, 0700);
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}
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strcat(sender, ptr);
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printf("1 %s \n", ptr);
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}
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//empfänger auslesen, ordner für empfänger erstellen, wenn nicht vorhanden
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if (counter == 2) {
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struct stat st2 = {0};
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char dir2[] = "./data/posteingang/";
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strcat(dir2, ptr);
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if (stat(dir2, &st2) == -1) {
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mkdir(dir2, 0700);
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}
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strcat(empfaenger, ptr);
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printf("2 %s \n" , ptr);
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}
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//betreff auslesen, id (ts) fertigstellen,
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//2 dateien erstellen für sender und empfänger mit ts als filename
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if (counter == 3) {
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//printf("3 %s \n", ptr);
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strcat(betreff, ptr);
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strcat(ts, betreff);
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//Pfad erstellen für den sender und file erstellen
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char fb[100] = "touch ./data/postausgang/";
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strcat(fb, "/");
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strcat(fb, sender);
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strcat(fb, "/");
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strcat(fb, ts);
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printf("PATH: %s \n", fb);
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system(fb);
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//Pfad erstellen für den empfänger und file erstellen
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strcpy(fb, "touch ./data/posteingang/");
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strcat(fb, "/");
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strcat(fb, empfaenger);
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strcat(fb, "/");
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strcat(fb, ts);
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printf("PATH: %s \n", fb);
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system(fb);
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}
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//buffer in files schreiben
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if (counter == 4) {
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//printf("4 %s \n", ptr);
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//file content für den empfänger erstellen
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char fp[100] = "./data/posteingang/";
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char content1[1000] = "";
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strcpy(content1, "ID: ");
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strcat(content1, ts);
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strcat(content1, "\n");
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strcat(content1, "Received from: ");
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strcat(content1, sender);
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strcat(content1, "\n");
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strcat(content1, "Betreff: ");
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strcat(content1, betreff);
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strcat(content1, "\n");
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strcat(content1, "Message: ");
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strcat(content1, ptr);
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strcat(fp, empfaenger);
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strcat(fp, "/");
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strcat(fp, ts);
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//content in das file storen
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mstore_data(fp, content1);
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//file content für den sender erstellen
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char content2[1000] = "";
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strcpy(content2, "ID: ");
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strcat(content2, ts);
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strcat(content2, "\n");
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strcat(content2, "Sent to: ");
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strcat(content2, empfaenger);
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strcat(content2, "\n");
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strcat(content2, "Betreff: ");
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strcat(content2, betreff);
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strcat(content2, "\n");
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strcat(content2, "Message: ");
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strcat(content2, ptr);
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strcpy(fp, "./data/postausgang/");
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strcat(fp, sender);
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strcat(fp, "/");
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strcat(fp, ts);
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//content2 in das file storen
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mstore_data(fp, content2);
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}
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counter = counter + 1;
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// naechsten Abschnitt erstellen
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ptr = strtok(NULL, delimiter);
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}
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||||
//printf ("\n Message received: \n %s", buffer);
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//OK an den client zurücksenden
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char suc[] = "OK";
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||||
send(new_socket , suc , strlen(suc) , 0 );
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||||
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||||
}
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||||
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else if(startsWith("del", buffer) == true) {
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printf("delete: %s ", buffer);
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||||
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char delimiter[] = ";";
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char *ptr;
|
||||
ptr = strtok(buffer, delimiter);
|
||||
|
||||
int counter = 0;
|
||||
|
||||
char username[8] = "";
|
||||
char nid[80] = "";
|
||||
char p[20] = "";
|
||||
char path[100] = "";
|
||||
|
||||
while(ptr != NULL) {
|
||||
|
||||
//username speichern
|
||||
if(counter == 1) {
|
||||
strcat(username, ptr);
|
||||
}
|
||||
|
||||
//post ein- oder ausgang speichern
|
||||
if(counter == 2) {
|
||||
strcpy(p, ptr);
|
||||
}
|
||||
|
||||
//nid speichern, den path string erstellen, rm -rf path ausführen
|
||||
if(counter == 3) {
|
||||
strcat(nid, ptr);
|
||||
if(strcmp(p, "postausgang") == 0) {
|
||||
strcpy(path, "rm -rf ./data/postausgang/");
|
||||
}
|
||||
|
||||
if(strcmp(p, "posteingang") == 0) {
|
||||
strcpy(path, "rm -rf ./data/posteingang/");
|
||||
}
|
||||
|
||||
strcat(path, username);
|
||||
strcat(path, "/");
|
||||
strcat(path, nid);
|
||||
|
||||
system(path);
|
||||
}
|
||||
counter = counter + 1;
|
||||
|
||||
// naechsten Abschnitt erstellen
|
||||
ptr = strtok(NULL, delimiter);
|
||||
}
|
||||
|
||||
//OK an client zurücksenden
|
||||
char resBuff[BUF] = "OK\n";
|
||||
send(new_socket, resBuff, strlen(resBuff),0);
|
||||
strcpy(buffer, "");
|
||||
|
||||
}
|
||||
|
||||
//read
|
||||
else if(startsWith("read", buffer) == true) {
|
||||
|
||||
char delimiter[] = ";";
|
||||
char *ptr;
|
||||
ptr = strtok(buffer, delimiter);
|
||||
|
||||
int counter = 0;
|
||||
char username[8] = "";
|
||||
char nid[80] = "";
|
||||
char betreff[80] = "";
|
||||
char folder[20] = "";
|
||||
|
||||
while(ptr != NULL) {
|
||||
|
||||
if(counter == 1) {
|
||||
//username speichern
|
||||
strcat(username, ptr);
|
||||
}
|
||||
|
||||
//postein- oder ausgang speichern
|
||||
if(counter == 2) {
|
||||
strcpy(folder, ptr);
|
||||
}
|
||||
|
||||
//nid speichern, file mit dem path lesen und an client zzrücksenden
|
||||
if(counter == 3) {
|
||||
//nid
|
||||
strcat(nid, ptr);
|
||||
strcpy(betreff, nid);
|
||||
|
||||
|
||||
char filename[] = "./data/";
|
||||
strcat(filename, folder);
|
||||
strcat(filename, "/");
|
||||
|
||||
strcat(filename, username);
|
||||
strcat(filename, "/");
|
||||
strcat(filename, nid);
|
||||
printf("PATH: %s", filename);
|
||||
|
||||
FILE *ptr_file;
|
||||
char buf[1000];
|
||||
char res[1000];
|
||||
|
||||
ptr_file = fopen(filename,"r");
|
||||
if (!ptr_file)
|
||||
return 1;
|
||||
|
||||
while (fgets(buf,1000, ptr_file)!=NULL) {
|
||||
|
||||
strcat(res, buf);
|
||||
|
||||
}
|
||||
|
||||
|
||||
fclose(ptr_file);
|
||||
|
||||
|
||||
// and send that buffer to client
|
||||
|
||||
printf("%s", res);
|
||||
send(new_socket , res, strlen(res), 0 );
|
||||
|
||||
}
|
||||
|
||||
counter = counter + 1;
|
||||
|
||||
// naechsten Abschnitt erstellen
|
||||
ptr = strtok(NULL, delimiter);
|
||||
}
|
||||
}
|
||||
|
||||
//list
|
||||
else if(startsWith("list", buffer) == true) {
|
||||
|
||||
char delimiter[] = ";";
|
||||
char *ptr;
|
||||
ptr = strtok(buffer, delimiter);
|
||||
|
||||
int counter = 0;
|
||||
char username[8] = "";
|
||||
char p[20] = "";
|
||||
char path[100] = "";
|
||||
|
||||
while(ptr != NULL) {
|
||||
|
||||
//username speichern
|
||||
if(counter == 1) {
|
||||
strcat(username, ptr);
|
||||
}
|
||||
|
||||
//postein - oder ausgang speichern
|
||||
if(counter == 2) {
|
||||
strcat(p, ptr);
|
||||
|
||||
if(strcmp(p, "postausgang") == 0) {
|
||||
strcpy(path, "./data/postausgang/");
|
||||
}
|
||||
|
||||
if(strcmp(p, "posteingang") == 0) {
|
||||
strcpy(path, "./data/posteingang/");
|
||||
}
|
||||
|
||||
strcat(path, username);
|
||||
strcat(path, "/");
|
||||
|
||||
DIR *d;
|
||||
struct dirent *dir;
|
||||
char filenames[1000] = "";
|
||||
|
||||
//Messages zählen
|
||||
int fc = countFiles(path);
|
||||
char str[1000];
|
||||
//int in string konverten
|
||||
sprintf(str, "%d", fc);
|
||||
|
||||
strcat(filenames, str);
|
||||
strcat(filenames, ";");
|
||||
|
||||
//file lesen
|
||||
d = opendir(path);
|
||||
|
||||
if (d)
|
||||
{
|
||||
|
||||
while ((dir = readdir(d)) != NULL)
|
||||
{
|
||||
strcat(filenames, dir->d_name);
|
||||
strcat(filenames, ";");
|
||||
}
|
||||
|
||||
closedir(d);
|
||||
|
||||
//an client senden
|
||||
send(new_socket , filenames , strlen(filenames) , 0 );
|
||||
strcpy(buffer, "");
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
|
||||
counter = counter + 1;
|
||||
|
||||
// naechsten Abschnitt erstellen
|
||||
ptr = strtok(NULL, delimiter);
|
||||
}
|
||||
|
||||
|
||||
}
|
||||
|
||||
else {
|
||||
printf("error");
|
||||
char err[] = "ERR";
|
||||
send(new_socket , err , strlen(err) , 0 );
|
||||
|
||||
}
|
||||
|
||||
//printf ("\n content: \n %s", buffer);
|
||||
|
||||
|
||||
}
|
||||
else if (size == 0)
|
||||
{
|
||||
printf("Client closed remote socket\n");
|
||||
break;
|
||||
}
|
||||
else
|
||||
{
|
||||
perror("recv error");
|
||||
char err[] = "ERR";
|
||||
send(new_socket , err , strlen(err) , 0 );
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
|
||||
} while (strncmp (buffer, "quit", 4) != 0);
|
||||
close (new_socket);
|
||||
}
|
||||
close (create_socket);
|
||||
return EXIT_SUCCESS;
|
||||
}
|
||||
Reference in New Issue
Block a user