apps/sess_id.c

   1 /*
   2  * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the OpenSSL license (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <stdio.h>
  11 #include <stdlib.h>
  12 #include <string.h>
  13 #include "apps.h"
  14 #include <openssl/bio.h>
  15 #include <openssl/err.h>
  16 #include <openssl/x509.h>
  17 #include <openssl/pem.h>
  18 #include <openssl/ssl.h>
  19
  20 typedef enum OPTION_choice {
  21     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  22     OPT_INFORM, OPT_OUTFORM, OPT_IN, OPT_OUT,
  23     OPT_TEXT, OPT_CERT, OPT_NOOUT, OPT_CONTEXT
  24 } OPTION_CHOICE;
  25
  26 const OPTIONS sess_id_options[] = {
  27     {"help", OPT_HELP, '-', "Display this summary"},
  28     {"inform", OPT_INFORM, 'F', "Input format - default PEM (DER or PEM)"},
  29     {"outform", OPT_OUTFORM, 'f',
  30      "Output format - default PEM (PEM, DER or NSS)"},
  31     {"in", OPT_IN, 's', "Input file - default stdin"},
  32     {"out", OPT_OUT, 's', "Output file - default stdout"},
  33     {"text", OPT_TEXT, '-', "Print ssl session id details"},
  34     {"cert", OPT_CERT, '-', "Output certificate "},
  35     {"noout", OPT_NOOUT, '-', "Don't output the encoded session info"},
  36     {"context", OPT_CONTEXT, 's', "Set the session ID context"},
  37     {NULL}
  38 };
  39
  40 static SSL_SESSION *load_sess_id(char *file, int format);
  41
  42 int sess_id_main(int argc, char **argv)
  43 {
  44     SSL_SESSION *x = NULL;
  45     X509 *peer = NULL;
  46     BIO *out = NULL;
  47     char *infile = NULL, *outfile = NULL, *context = NULL, *prog;
  48     int informat = FORMAT_PEM, outformat = FORMAT_PEM;
  49     int cert = 0, noout = 0, text = 0, ret = 1, i, num = 0;
  50     OPTION_CHOICE o;
  51
  52     prog = opt_init(argc, argv, sess_id_options);
  53     while ((o = opt_next()) != OPT_EOF) {
  54         switch (o) {
  55         case OPT_EOF:
  56         case OPT_ERR:
  57  opthelp:
  58             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
  59             goto end;
  60         case OPT_HELP:
  61             opt_help(sess_id_options);
  62             ret = 0;
  63             goto end;
  64         case OPT_INFORM:
  65             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
  66                 goto opthelp;
  67             break;
  68         case OPT_OUTFORM:
  69             if (!opt_format(opt_arg(), OPT_FMT_PEMDER | OPT_FMT_NSS,
  70                             &outformat))
  71                 goto opthelp;
  72             break;
  73         case OPT_IN:
  74             infile = opt_arg();
  75             break;
  76         case OPT_OUT:
  77             outfile = opt_arg();
  78             break;
  79         case OPT_TEXT:
  80             text = ++num;
  81             break;
  82         case OPT_CERT:
  83             cert = ++num;
  84             break;
  85         case OPT_NOOUT:
  86             noout = ++num;
  87             break;
  88         case OPT_CONTEXT:
  89             context = opt_arg();
  90             break;
  91         }
  92     }
  93     argc = opt_num_rest();
  94     if (argc != 0)
  95         goto opthelp;
  96
  97     x = load_sess_id(infile, informat);
  98     if (x == NULL) {
  99         goto end;
 100     }
 101     peer = SSL_SESSION_get0_peer(x);
 102
 103     if (context != NULL) {
 104         size_t ctx_len = strlen(context);
 105         if (ctx_len > SSL_MAX_SID_CTX_LENGTH) {
 106             BIO_printf(bio_err, "Context too long\n");
 107             goto end;
 108         }
 109         if (!SSL_SESSION_set1_id_context(x, (unsigned char *)context,
 110                                          ctx_len)) {
 111             BIO_printf(bio_err, "Error setting id context\n");
 112             goto end;
 113         }
 114     }
 115
 116     if (!noout || text) {
 117         out = bio_open_default(outfile, 'w', outformat);
 118         if (out == NULL)
 119             goto end;
 120     }
 121
 122     if (text) {
 123         SSL_SESSION_print(out, x);
 124
 125         if (cert) {
 126             if (peer == NULL)
 127                 BIO_puts(out, "No certificate present\n");
 128             else
 129                 X509_print(out, peer);
 130         }
 131     }
 132
 133     if (!noout && !cert) {
 134         if (outformat == FORMAT_ASN1) {
 135             i = i2d_SSL_SESSION_bio(out, x);
 136         } else if (outformat == FORMAT_PEM) {
 137             i = PEM_write_bio_SSL_SESSION(out, x);
 138         } else if (outformat == FORMAT_NSS) {
 139             i = SSL_SESSION_print_keylog(out, x);
 140         } else {
 141             BIO_printf(bio_err, "bad output format specified for outfile\n");
 142             goto end;
 143         }
 144         if (!i) {
 145             BIO_printf(bio_err, "unable to write SSL_SESSION\n");
 146             goto end;
 147         }
 148     } else if (!noout && (peer != NULL)) { /* just print the certificate */
 149         if (outformat == FORMAT_ASN1) {
 150             i = (int)i2d_X509_bio(out, peer);
 151         } else if (outformat == FORMAT_PEM) {
 152             i = PEM_write_bio_X509(out, peer);
 153         } else {
 154             BIO_printf(bio_err, "bad output format specified for outfile\n");
 155             goto end;
 156         }
 157         if (!i) {
 158             BIO_printf(bio_err, "unable to write X509\n");
 159             goto end;
 160         }
 161     }
 162     ret = 0;
 163  end:
 164     BIO_free_all(out);
 165     SSL_SESSION_free(x);
 166     return ret;
 167 }
 168
 169 static SSL_SESSION *load_sess_id(char *infile, int format)
 170 {
 171     SSL_SESSION *x = NULL;
 172     BIO *in = NULL;
 173
 174     in = bio_open_default(infile, 'r', format);
 175     if (in == NULL)
 176         goto end;
 177     if (format == FORMAT_ASN1)
 178         x = d2i_SSL_SESSION_bio(in, NULL);
 179     else
 180         x = PEM_read_bio_SSL_SESSION(in, NULL, NULL, NULL);
 181     if (x == NULL) {
 182         BIO_printf(bio_err, "unable to load SSL_SESSION\n");
 183         ERR_print_errors(bio_err);
 184         goto end;
 185     }
 186
 187  end:
 188     BIO_free(in);
 189     return x;
 190 }