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| /*SERVEUR*/
#include "serveur_SSL.h"
//////////////////////////////////////////////////////////////////
// //
// Fonction Principale //
// //
//////////////////////////////////////////////////////////////////
int main()
{
int err;
int verify_client = OFF; /* To verify a client certificate, set ON */
int listen_sock;
int sock;
struct sockaddr_in sa_serv;
struct sockaddr_in sa_cli;
size_t client_len;
char *str;
char buf[4096];
SSL_CTX *ctx;
SSL *ssl;
SSL_METHOD *meth;
X509 *client_cert = NULL;
short int s_port = 636;
int address_size;
FILE*fp,*fp_recu,*fpin,*fpout, *outfp, *infp, *decfp;
int recp_fich=0,ks=0,longueur=0,n=0;
unsigned char *cipher=NULL,*plain=NULL;
int size=0,len=0;
RSA *key=NULL;
long taille_fichier;
int mon_bool=TRUE;
struct timeval tv;
////////////////////////////////////////////////////////////////
/*Initialization*/
/* Load encryption & hashing algorithms for the SSL program */
SSL_library_init();
/* Load the error strings for SSL & CRYPTO APIs */
SSL_load_error_strings();
/* Create a SSL_METHOD structure (choose a SSL/TLS protocol version) */
meth = SSLv3_method();
/* Create a SSL_CTX structure */
ctx = SSL_CTX_new(meth);
if (!ctx)
{
ERR_print_errors_fp(stderr);
exit(1);
}
/* Load the server certificate into the SSL_CTX structure */
if (SSL_CTX_use_certificate_file(ctx, RSA_SERVER_CERT, SSL_FILETYPE_PEM) <= 0)
{
ERR_print_errors_fp(stderr);
exit(1);
}
/* Load the private-key corresponding to the server certificate */
if (SSL_CTX_use_PrivateKey_file(ctx, RSA_SERVER_KEY, SSL_FILETYPE_PEM) <= 0)
{
ERR_print_errors_fp(stderr);
exit(1);
}
/* Check if the server certificate and private-key matches */
if (!SSL_CTX_check_private_key(ctx))
{
fprintf(stderr,"Private key does not match the certificate public key\n");
exit(1);
}
/* Set the session id context*/
/* SSL_CTX_set_session_id_context(ctx,
(void*)&s_server_session_id_context,
sizeof s_server_session_id_context); */
/* if verify client */
if(verify_client == ON)
{
/* Load the RSA CA certificate into the SSL_CTX structure */
if (!SSL_CTX_load_verify_locations(ctx, RSA_SERVER_CA_CERT, NULL))
{
ERR_print_errors_fp(stderr);
exit(1);
}
/* Set to require peer (client) certificate verification */
SSL_CTX_set_verify(ctx,SSL_VERIFY_PEER,NULL);
/* Set the verification depth to 1 */
SSL_CTX_set_verify_depth(ctx,1);
}
printf("Initialization terminate\n\n");
////////////////////////////////////////////////////////////////
/*SOCKET*/
/* Set up a TCP socket */
listen_sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
RETURN_ERR(listen_sock, "socket");
memset (&sa_serv, '\0', sizeof(sa_serv));
sa_serv.sin_family = AF_INET;
sa_serv.sin_addr.s_addr = INADDR_ANY;
sa_serv.sin_port = htons (s_port);
/* Server Port number */
err = bind(listen_sock, (struct sockaddr*)&sa_serv,sizeof(sa_serv));
RETURN_ERR(err, "bind");
/*setsockopt*/
int bOptVal = 1;
int bOptLen = sizeof(int);
int iOptVal;
int iOptLen = sizeof(int);
if (setsockopt(listen_sock, SOL_SOCKET, SO_REUSEADDR, (char*)&bOptVal, bOptLen) != SO_ERROR) {
printf("Set reuseaddr: ON\n");
}
/* Wait for an incoming TCP connection. */
err = listen(listen_sock, 5);
RETURN_ERR(err, "listen");
while(1)
{
while (mon_bool==TRUE)
{
fd_set readfs;
tv.tv_sec = 5;
tv.tv_usec = 0;
FD_ZERO (&readfs); /* clears readfs */
FD_SET (sock, &readfs); /* adds a stream */
int err = select (sock + 1, &readfs, NULL, NULL, &tv);
switch (err)
{
case 0:
/* timeout */
mon_bool=FALSE;
printf("time out\n");
break;
case -1:
/* error */
puts ("error\n");
mon_bool=FALSE;
break;
default:
/* stream event */
/* - data has been received */
if (FD_ISSET (sock, &readfs))
{
/* Socket for a TCP/IP connection is created */
printf("\nWAITING FOR CONNECTION\n\n");
client_len = sizeof(sa_cli);
sock = accept(listen_sock, (struct sockaddr*)&sa_cli, &client_len);
RETURN_ERR(sock, "accept");
printf ("Connection from %lx, port %x\n", sa_cli.sin_addr.s_addr,sa_cli.sin_port);
////////////////////////////////////////////////////////////////
/*SSL*/
/* TCP connection is ready. */
/* A SSL structure is created */
ssl = SSL_new(ctx);
RETURN_NULL(ssl);
/* Assign the socket into the SSL structure (SSL and socket without BIO) */
SSL_set_fd(ssl, sock);
/* Perform SSL Handshake on the SSL server */
err = SSL_accept(ssl);
RETURN_SSL(err);
/* Informational output (optional) */
printf("SSL connection using %s\n", SSL_get_cipher (ssl));
if (verify_client == ON)
{
/* Get the client's certificate (optional) */
client_cert = SSL_get_peer_certificate(ssl);
if (client_cert != NULL)
{
printf ("Client certificate:\n");
str = X509_NAME_oneline(X509_get_subject_name(client_cert), 0, 0);
RETURN_NULL(str);
printf ("\t subject: %s\n", str);
free (str);
str = X509_NAME_oneline(X509_get_issuer_name(client_cert), 0, 0);
RETURN_NULL(str);
printf ("\t issuer: %s\n", str);
free (str);
X509_free(client_cert);
}
else
{
printf("The SSL client does not have certificate.\n");
if (SSL_get_verify_result(ssl) != X509_V_OK)
{
printf("client certificate verification failed!!!\n");
tls_dump_verification_failure(SSL_get_verify_result(ssl));
}
}
}
////////////////////////////////////////////////////////////////
/*------- DATA EXCHANGE - Receive message and send reply. -------*/
printf("\n************************************");
printf("\nDATA EXCHANGE\n");
err = SSL_read(ssl, buf, sizeof(buf));
RETURN_SSL(err);
buf[err] = '\0';
if (err > 0)
{
/* process the received data */
printf ("Received %d chars:'%s'\n", err, buf);
}
else
{
if (err==0)
{
mon_bool=FALSE;break;
}
}
/* Receive data from the SSL client */
/* err = SSL_read(ssl, buf, sizeof(buf));
RETURN_SSL(err); buf[err] = '\0';
printf ("Received %d chars:'%s'\n", err, buf); */
/* Send data to the SSL client */
/* err = SSL_write(ssl, "This message is from the SSL server",strlen("This message is from the SSL server"));
RETURN_SSL(err); */
mon_bool=TRUE;
printf("\nEND DATA EXCHANGE\n");
printf("************************************\n");
}
/* - data has been sent */
/* - an error has been received */
}
}
////////////////////////////////////////////////////////////////
/*--------------- SSL closure ---------------*/
/* Shutdown this side (server) of the connection. */
err = SSL_shutdown(ssl);
RETURN_SSL(err);
/* Terminate communication on a socket */
err = close(sock);
RETURN_ERR(err, "close");
/* Free the SSL structure */
SSL_free(ssl);
}
/* Free the SSL_CTX structure */
SSL_CTX_free(ctx);
printf("Application terminate : good bye!\n");
close (listen_sock);
/*END*/
} |
.
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Cafuro est un outil SNMP dont le but est d'aider les administrateurs système et réseau à configurer leurs équipements SNMP réseau.
Envoyé par Bathou
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