apps/sess_id.c

   1 /*
   2  * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (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 "progs.h"
  15 #include <openssl/bio.h>
  16 #include <openssl/err.h>
  17 #include <openssl/x509.h>
  18 #include <openssl/pem.h>
  19 #include <openssl/ssl.h>
  20
  21 typedef enum OPTION_choice {
  22     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  23     OPT_INFORM, OPT_OUTFORM, OPT_IN, OPT_OUT,
  24     OPT_TEXT, OPT_CERT, OPT_NOOUT, OPT_CONTEXT
  25 } OPTION_CHOICE;
  26
  27 const OPTIONS sess_id_options[] = {
  28     OPT_SECTION("General"),
  29     {"help", OPT_HELP, '-', "Display this summary"},
  30     {"context", OPT_CONTEXT, 's', "Set the session ID context"},
  31
  32     OPT_SECTION("Input"),
  33     {"in", OPT_IN, 's', "Input file - default stdin"},
  34     {"inform", OPT_INFORM, 'F', "Input format - default PEM (DER or PEM)"},
  35
  36     OPT_SECTION("Output"),
  37     {"out", OPT_OUT, '>', "Output file - default stdout"},
  38     {"outform", OPT_OUTFORM, 'f',
  39      "Output format - default PEM (PEM, DER or NSS)"},
  40     {"text", OPT_TEXT, '-', "Print ssl session id details"},
  41     {"cert", OPT_CERT, '-', "Output certificate "},
  42     {"noout", OPT_NOOUT, '-', "Don't output the encoded session info"},
  43     {NULL}
  44 };
  45
  46 static SSL_SESSION *load_sess_id(char *file, int format);
  47
  48 int sess_id_main(int argc, char **argv)
  49 {
  50     SSL_SESSION *x = NULL;
  51     X509 *peer = NULL;
  52     BIO *out = NULL;
  53     char *infile = NULL, *outfile = NULL, *context = NULL, *prog;
  54     int informat = FORMAT_PEM, outformat = FORMAT_PEM;
  55     int cert = 0, noout = 0, text = 0, ret = 1, i, num = 0;
  56     OPTION_CHOICE o;
  57
  58     prog = opt_init(argc, argv, sess_id_options);
  59     while ((o = opt_next()) != OPT_EOF) {
  60         switch (o) {
  61         case OPT_EOF:
  62         case OPT_ERR:
  63  opthelp:
  64             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
  65             goto end;
  66         case OPT_HELP:
  67             opt_help(sess_id_options);
  68             ret = 0;
  69             goto end;
  70         case OPT_INFORM:
  71             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
  72                 goto opthelp;
  73             break;
  74         case OPT_OUTFORM:
  75             if (!opt_format(opt_arg(), OPT_FMT_PEMDER | OPT_FMT_NSS,
  76                             &outformat))
  77                 goto opthelp;
  78             break;
  79         case OPT_IN:
  80             infile = opt_arg();
  81             break;
  82         case OPT_OUT:
  83             outfile = opt_arg();
  84             break;
  85         case OPT_TEXT:
  86             text = ++num;
  87             break;
  88         case OPT_CERT:
  89             cert = ++num;
  90             break;
  91         case OPT_NOOUT:
  92             noout = ++num;
  93             break;
  94         case OPT_CONTEXT:
  95             context = opt_arg();
  96             break;
  97         }
  98     }
  99     argc = opt_num_rest();
 100     if (argc != 0)
 101         goto opthelp;
 102
 103     x = load_sess_id(infile, informat);
 104     if (x == NULL) {
 105         goto end;
 106     }
 107     peer = SSL_SESSION_get0_peer(x);
 108
 109     if (context != NULL) {
 110         size_t ctx_len = strlen(context);
 111         if (ctx_len > SSL_MAX_SID_CTX_LENGTH) {
 112             BIO_printf(bio_err, "Context too long\n");
 113             goto end;
 114         }
 115         if (!SSL_SESSION_set1_id_context(x, (unsigned char *)context,
 116                                          ctx_len)) {
 117             BIO_printf(bio_err, "Error setting id context\n");
 118             goto end;
 119         }
 120     }
 121
 122     if (!noout || text) {
 123         out = bio_open_default(outfile, 'w', outformat);
 124         if (out == NULL)
 125             goto end;
 126     }
 127
 128     if (text) {
 129         SSL_SESSION_print(out, x);
 130
 131         if (cert) {
 132             if (peer == NULL)
 133                 BIO_puts(out, "No certificate present\n");
 134             else
 135                 X509_print(out, peer);
 136         }
 137     }
 138
 139     if (!noout && !cert) {
 140         if (outformat == FORMAT_ASN1) {
 141             i = i2d_SSL_SESSION_bio(out, x);
 142         } else if (outformat == FORMAT_PEM) {
 143             i = PEM_write_bio_SSL_SESSION(out, x);
 144         } else if (outformat == FORMAT_NSS) {
 145             i = SSL_SESSION_print_keylog(out, x);
 146         } else {
 147             BIO_printf(bio_err, "bad output format specified for outfile\n");
 148             goto end;
 149         }
 150         if (!i) {
 151             BIO_printf(bio_err, "unable to write SSL_SESSION\n");
 152             goto end;
 153         }
 154     } else if (!noout && (peer != NULL)) { /* just print the certificate */
 155         if (outformat == FORMAT_ASN1) {
 156             i = (int)i2d_X509_bio(out, peer);
 157         } else if (outformat == FORMAT_PEM) {
 158             i = PEM_write_bio_X509(out, peer);
 159         } else {
 160             BIO_printf(bio_err, "bad output format specified for outfile\n");
 161             goto end;
 162         }
 163         if (!i) {
 164             BIO_printf(bio_err, "unable to write X509\n");
 165             goto end;
 166         }
 167     }
 168     ret = 0;
 169  end:
 170     BIO_free_all(out);
 171     SSL_SESSION_free(x);
 172     return ret;
 173 }
 174
 175 static SSL_SESSION *load_sess_id(char *infile, int format)
 176 {
 177     SSL_SESSION *x = NULL;
 178     BIO *in = NULL;
 179
 180     in = bio_open_default(infile, 'r', format);
 181     if (in == NULL)
 182         goto end;
 183     if (format == FORMAT_ASN1)
 184         x = d2i_SSL_SESSION_bio(in, NULL);
 185     else
 186         x = PEM_read_bio_SSL_SESSION(in, NULL, NULL, NULL);
 187     if (x == NULL) {
 188         BIO_printf(bio_err, "unable to load SSL_SESSION\n");
 189         ERR_print_errors(bio_err);
 190         goto end;
 191     }
 192
 193  end:
 194     BIO_free(in);
 195     return x;
 196 }