delte_useless_folder

Email/Makefile

-# Protocoale de comunicatii
-# Laborator 11 - E-mail
-# Makefile
-
-CFLAGS = -Wall -g
-
-IP_SERVER = 127.0.0.1
-NUME_FISIER = file.txt
-
-default: send_mail
-
-send_mail: send_mail.c
-	gcc $(CFLAGS) send_mail.c -o send_mail
-
-run: send_mail
-	./send_mail ${IP_SERVER} ${NUME_FISIER}
-
-.PHONY: clean
-
-clean:
-	rm -f send_mail

Email/file.txt

-This is an attachment.

Email/send_mail.c

-/*
- * Protocoale de comunicatii
- * Laborator 11 - E-mail
- * send_mail.c
- */
-
-#include <sys/socket.h> 
-#include <netinet/in.h>
-#include <arpa/inet.h>  
-#include <unistd.h>     
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-#include <errno.h>
-
-#define SMTP_PORT 25
-#define MAXLEN 500
-
-/**
- * Citeste maxim maxlen octeti de pe socket-ul sockfd in
- * buffer-ul vptr. Intoarce numarul de octeti cititi.
- */
-ssize_t read_line(int sockd, void *vptr, size_t maxlen)
-{
-    ssize_t n, rc;
-    char c, *buffer;
-
-    buffer = vptr;
-
-    for (n = 1; n < maxlen; n++) {
-        if ((rc = read(sockd, &c, 1)) == 1) {
-            *buffer++ = c;
-
-            if (c == '\n') {
-                break;
-            }
-        } else if (rc == 0) {
-            if (n == 1) {
-                return 0;
-            } else {
-                break;
-            }
-        } else {
-            if (errno == EINTR) {
-                continue;
-            }
-
-            return -1;
-        }
-    }
-
-    *buffer = 0;
-    return n;
-}
-
-/**
- * Trimite o comanda SMTP si asteapta raspuns de la server. Comanda
- * trebuie sa fie in buffer-ul sendbuf. Sirul expected contine
- * inceputul raspunsului pe care trebuie sa-l trimita serverul
- * in caz de succes (de exemplu, codul 250). Daca raspunsul
- * semnaleaza o eroare, se iese din program.
- */
-void send_command(int sockfd, const char sendbuf[], char *expected)
-{
-    char recvbuf[MAXLEN];
-    int nbytes;
-    char CRLF[2] = {13, 10};
-
-    printf("Trimit: %s\n", sendbuf);
-    write(sockfd, sendbuf, strlen(sendbuf));
-    write(sockfd, CRLF, sizeof(CRLF));
-
-    nbytes = read_line(sockfd, recvbuf, MAXLEN - 1);
-    recvbuf[nbytes] = 0;
-    printf("Am primit: %s", recvbuf);
-
-    if (strstr(recvbuf, expected) != recvbuf) {
-        printf("Am primit mesaj de eroare de la server!\n");
-        exit(-1);
-    }
-}
-
-int main(int argc, char **argv) {
-    int sockfd;
-    int port = SMTP_PORT;
-    struct sockaddr_in servaddr;
-    char server_ip[INET_ADDRSTRLEN];
-    char sendbuf[MAXLEN]; 
-    char recvbuf[MAXLEN];
-
-    if (argc != 3) {
-        printf("Utilizare: ./send_msg adresa_server nume_fisier\n");
-        exit(-1);
-    }
-
-    strncpy(server_ip, argv[1], INET_ADDRSTRLEN);
-
-    // TODO 1: creati socket-ul TCP client
-
-    // TODO 2: completati structura sockaddr_in cu
-    // portul si adresa IP ale serverului SMTP
-        
-    // TODO 3: conectati-va la server
-
-    // se primeste mesajul de conectare de la server
-    read_line(sockfd, recvbuf, MAXLEN -1);
-    printf("Am primit: %s\n", recvbuf);
-
-    // se trimite comanda de HELO
-    sprintf(sendbuf, "HELO localhost");
-    send_command(sockfd, sendbuf, "250");
-
-    // TODO 4: trimiteti comanda de MAIL FROM
-
-    // TODO 5: trimiteti comanda de RCPT TO
-
-    // TODO 6: trimiteti comanda de DATA
-
-    // TODO 7: trimiteti e-mail-ul (antete + corp + atasament)
-
-    // TODO 8: trimiteti comanda de QUIT
-
-    // TODO 9: inchideti socket-ul TCP client
-
-    return 0;
-}

dns/Makefile

-# Protocoale de comunicatii
-# Laborator 11 - DNS
-# Makefile
-
-CFLAGS = -Wall -g
-
-default: dns
-
-dns: dns.c
-
-.PHONY: clean
-
-clean:
-	rm -f dns

dns/dns.c

-// Protocoale de comunicatii
-// Laborator 9 - DNS
-// dns.c
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <sys/types.h>
-#include <unistd.h>
-#include <string.h>
-#include <sys/socket.h>
-#include <netdb.h>
-#include <arpa/inet.h>
-
-int usage(char* name)
-{
-	printf("Usage:\n\t%s -n <NAME>\n\t%s -a <IP>\n", name, name);
-	return 1;
-}
-
-// Receives a name and prints IP addresses
-void get_ip(char* name)
-{
-	int ret;
-	struct addrinfo hints, *result, *p;
-
-	// TODO: set hints
-
-	// TODO: get addresses
-
-	// TODO: iterate through addresses and print them
-
-	// TODO: free allocated data
-}
-
-// Receives an address and prints the associated name and service
-void get_name(char* ip)
-{
-	int ret;
-	struct sockaddr_in addr;
-	char host[1024];
-	char service[20];
-
-	// TODO: fill in address data
-
-	// TODO: get name and service
-
-	// TODO: print name and service
-}
-
-int main(int argc, char **argv)
-{
-	if (argc < 3) {
-		return usage(argv[0]);
-	}
-
-	if (strncmp(argv[1], "-n", 2) == 0) {
-		get_ip(argv[2]);
-	} else if (strncmp(argv[1], "-a", 2) == 0) {
-		get_name(argv[2]);
-	} else {
-		return usage(argv[0]);
-	}
-
-	return 0;
-}