98 lines
2.7 KiB
C++
98 lines
2.7 KiB
C++
/* inetdserv.cpp - Minimal ssleay server for Unix inetd.conf
|
|
* 30.9.1996, Sampo Kellomaki <sampo@iki.fi>
|
|
* From /etc/inetd.conf:
|
|
* 1111 stream tcp nowait sampo /usr/users/sampo/demo/inetdserv inetdserv
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
|
|
#include "rsa.h" /* SSLeay stuff */
|
|
#include <openssl/crypto.h>
|
|
#include <openssl/x509.h>
|
|
#include <openssl/pem.h>
|
|
#include <openssl/ssl.h>
|
|
#include <openssl/err.h>
|
|
|
|
#define HOME "/usr/users/sampo/demo/"
|
|
#define CERTF HOME "plain-cert.pem"
|
|
#define KEYF HOME "plain-key.pem"
|
|
|
|
#define CHK_NULL(x) if ((x)==NULL) exit (1)
|
|
#define CHK_ERR(err,s) if ((err)==-1) \
|
|
{ fprintf(log, "%s %d\n", (s), errno); exit(1); }
|
|
#define CHK_SSL(err) if ((err)==-1) { ERR_print_errors_fp(log); exit(2); }
|
|
|
|
void main ()
|
|
{
|
|
int err;
|
|
SSL_CTX* ctx;
|
|
SSL* ssl;
|
|
X509* client_cert;
|
|
char* str;
|
|
char buf [4096];
|
|
FILE* log;
|
|
|
|
log = fopen ("/dev/console", "a"); CHK_NULL(log);
|
|
fprintf (log, "inetdserv %ld\n", (long)getpid());
|
|
|
|
SSL_load_error_strings();
|
|
ctx = SSL_CTX_new (); CHK_NULL(ctx);
|
|
|
|
err = SSL_CTX_use_RSAPrivateKey_file (ctx, KEYF, SSL_FILETYPE_PEM);
|
|
CHK_SSL (err);
|
|
|
|
err = SSL_CTX_use_certificate_file (ctx, CERTF, SSL_FILETYPE_PEM);
|
|
CHK_SSL (err);
|
|
|
|
/* inetd has already opened the TCP connection, so we can get right
|
|
down to business. */
|
|
|
|
ssl = SSL_new (ctx); CHK_NULL(ssl);
|
|
SSL_set_fd (ssl, fileno(stdin));
|
|
err = SSL_accept (ssl); CHK_SSL(err);
|
|
|
|
/* Get the cipher - opt */
|
|
|
|
fprintf (log, "SSL connection using %s\n", SSL_get_cipher (ssl));
|
|
|
|
/* Get client's certificate (note: beware of dynamic allocation) - opt */
|
|
|
|
client_cert = SSL_get_peer_certificate (ssl);
|
|
if (client_cert != NULL) {
|
|
fprintf (log, "Client certificate:\n");
|
|
|
|
str = X509_NAME_oneline (X509_get_subject_name (client_cert));
|
|
CHK_NULL(str);
|
|
fprintf (log, "\t subject: %s\n", str);
|
|
OPENSSL_free (str);
|
|
|
|
str = X509_NAME_oneline (X509_get_issuer_name (client_cert));
|
|
CHK_NULL(str);
|
|
fprintf (log, "\t issuer: %s\n", str);
|
|
OPENSSL_free (str);
|
|
|
|
/* We could do all sorts of certificate verification stuff here before
|
|
deallocating the certificate. */
|
|
|
|
X509_free (client_cert);
|
|
} else
|
|
fprintf (log, "Client doe not have certificate.\n");
|
|
|
|
/* ------------------------------------------------- */
|
|
/* DATA EXCHANGE: Receive message and send reply */
|
|
|
|
err = SSL_read (ssl, buf, sizeof(buf) - 1); CHK_SSL(err);
|
|
buf[err] = '\0';
|
|
fprintf (log, "Got %d chars:'%s'\n", err, buf);
|
|
|
|
err = SSL_write (ssl, "Loud and clear.", strlen("Loud and clear."));
|
|
CHK_SSL(err);
|
|
|
|
/* Clean up. */
|
|
|
|
fclose (log);
|
|
SSL_free (ssl);
|
|
SSL_CTX_free (ctx);
|
|
}
|
|
/* EOF - inetdserv.cpp */
|