crypto/external/bsd/openssl/dist/demos/ssl/serv.cpp

   1 /* serv.cpp  -  Minimal ssleay server for Unix
   2    30.9.1996, Sampo Kellomaki <sampo@iki.fi> */
   3
   4
   5 /* mangled to work with SSLeay-0.9.0b and OpenSSL 0.9.2b
   6    Simplified to be even more minimal
   7    12/98 - 4/99 Wade Scholine <wades@mail.cybg.com> */
   8
   9 #include <stdio.h>
  10 #include <unistd.h>
  11 #include <stdlib.h>
  12 #include <memory.h>
  13 #include <errno.h>
  14 #include <sys/types.h>
  15 #include <sys/socket.h>
  16 #include <netinet/in.h>
  17 #include <arpa/inet.h>
  18 #include <netdb.h>
  19
  20 #include <openssl/rsa.h>       /* SSLeay stuff */
  21 #include <openssl/crypto.h>
  22 #include <openssl/x509.h>
  23 #include <openssl/pem.h>
  24 #include <openssl/ssl.h>
  25 #include <openssl/err.h>
  26
  27
  28 /* define HOME to be dir for key and cert files... */
  29 #define HOME "./"
  30 /* Make these what you want for cert & key files */
  31 #define CERTF  HOME "foo-cert.pem"
  32 #define KEYF  HOME  "foo-cert.pem"
  33
  34
  35 #define CHK_NULL(x) if ((x)==NULL) exit (1)
  36 #define CHK_ERR(err,s) if ((err)==-1) { perror(s); exit(1); }
  37 #define CHK_SSL(err) if ((err)==-1) { ERR_print_errors_fp(stderr); exit(2); }
  38
  39 void main ()
  40 {
  41   int err;
  42   int listen_sd;
  43   int sd;
  44   struct sockaddr_in sa_serv;
  45   struct sockaddr_in sa_cli;
  46   size_t client_len;
  47   SSL_CTX* ctx;
  48   SSL*     ssl;
  49   X509*    client_cert;
  50   char*    str;
  51   char     buf [4096];
  52   SSL_METHOD *meth;
  53
  54   /* SSL preliminaries. We keep the certificate and key with the context. */
  55
  56   SSL_load_error_strings();
  57   SSLeay_add_ssl_algorithms();
  58   meth = SSLv23_server_method();
  59   ctx = SSL_CTX_new (meth);
  60   if (!ctx) {
  61     ERR_print_errors_fp(stderr);
  62     exit(2);
  63   }
  64
  65   if (SSL_CTX_use_certificate_file(ctx, CERTF, SSL_FILETYPE_PEM) <= 0) {
  66     ERR_print_errors_fp(stderr);
  67     exit(3);
  68   }
  69   if (SSL_CTX_use_PrivateKey_file(ctx, KEYF, SSL_FILETYPE_PEM) <= 0) {
  70     ERR_print_errors_fp(stderr);
  71     exit(4);
  72   }
  73
  74   if (!SSL_CTX_check_private_key(ctx)) {
  75     fprintf(stderr,"Private key does not match the certificate public key\n");
  76     exit(5);
  77   }
  78
  79   /* ----------------------------------------------- */
  80   /* Prepare TCP socket for receiving connections */
  81
  82   listen_sd = socket (AF_INET, SOCK_STREAM, 0);   CHK_ERR(listen_sd, "socket");
  83
  84   memset (&sa_serv, '\0', sizeof(sa_serv));
  85   sa_serv.sin_family      = AF_INET;
  86   sa_serv.sin_addr.s_addr = INADDR_ANY;
  87   sa_serv.sin_port        = htons (1111);          /* Server Port number */
  88
  89   err = bind(listen_sd, (struct sockaddr*) &sa_serv,
  90              sizeof (sa_serv));                   CHK_ERR(err, "bind");
  91
  92   /* Receive a TCP connection. */
  93
  94   err = listen (listen_sd, 5);                    CHK_ERR(err, "listen");
  95
  96   client_len = sizeof(sa_cli);
  97   sd = accept (listen_sd, (struct sockaddr*) &sa_cli, &client_len);
  98   CHK_ERR(sd, "accept");
  99   close (listen_sd);
 100
 101   printf ("Connection from %lx, port %x\n",
 102           sa_cli.sin_addr.s_addr, sa_cli.sin_port);
 103
 104   /* ----------------------------------------------- */
 105   /* TCP connection is ready. Do server side SSL. */
 106
 107   ssl = SSL_new (ctx);                           CHK_NULL(ssl);
 108   SSL_set_fd (ssl, sd);
 109   err = SSL_accept (ssl);                        CHK_SSL(err);
 110
 111   /* Get the cipher - opt */
 112
 113   printf ("SSL connection using %s\n", SSL_get_cipher (ssl));
 114
 115   /* Get client's certificate (note: beware of dynamic allocation) - opt */
 116
 117   client_cert = SSL_get_peer_certificate (ssl);
 118   if (client_cert != NULL) {
 119     printf ("Client certificate:\n");
 120
 121     str = X509_NAME_oneline (X509_get_subject_name (client_cert), 0, 0);
 122     CHK_NULL(str);
 123     printf ("\t subject: %s\n", str);
 124     OPENSSL_free (str);
 125
 126     str = X509_NAME_oneline (X509_get_issuer_name  (client_cert), 0, 0);
 127     CHK_NULL(str);
 128     printf ("\t issuer: %s\n", str);
 129     OPENSSL_free (str);
 130
 131     /* We could do all sorts of certificate verification stuff here before
 132        deallocating the certificate. */
 133
 134     X509_free (client_cert);
 135   } else
 136     printf ("Client does not have certificate.\n");
 137
 138   /* DATA EXCHANGE - Receive message and send reply. */
 139
 140   err = SSL_read (ssl, buf, sizeof(buf) - 1);                   CHK_SSL(err);
 141   buf[err] = '\0';
 142   printf ("Got %d chars:'%s'\n", err, buf);
 143
 144   err = SSL_write (ssl, "I hear you.", strlen("I hear you."));  CHK_SSL(err);
 145
 146   /* Clean up. */
 147
 148   close (sd);
 149   SSL_free (ssl);
 150   SSL_CTX_free (ctx);
 151 }
 152 /* EOF - serv.cpp */