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