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      1 /*
      2  * Copyright 1995-2021 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_COMMON,
     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 
    100     /* No extra arguments. */
    101     argc = opt_num_rest();
    102     if (argc != 0)
    103         goto opthelp;
    104 
    105     x = load_sess_id(infile, informat);
    106     if (x == NULL) {
    107         goto end;
    108     }
    109     peer = SSL_SESSION_get0_peer(x);
    110 
    111     if (context != NULL) {
    112         size_t ctx_len = strlen(context);
    113         if (ctx_len > SSL_MAX_SID_CTX_LENGTH) {
    114             BIO_printf(bio_err, "Context too long\n");
    115             goto end;
    116         }
    117         if (!SSL_SESSION_set1_id_context(x, (unsigned char *)context,
    118                                          ctx_len)) {
    119             BIO_printf(bio_err, "Error setting id context\n");
    120             goto end;
    121         }
    122     }
    123 
    124     if (!noout || text) {
    125         out = bio_open_default(outfile, 'w', outformat);
    126         if (out == NULL)
    127             goto end;
    128     }
    129 
    130     if (text) {
    131         SSL_SESSION_print(out, x);
    132 
    133         if (cert) {
    134             if (peer == NULL)
    135                 BIO_puts(out, "No certificate present\n");
    136             else
    137                 X509_print(out, peer);
    138         }
    139     }
    140 
    141     if (!noout && !cert) {
    142         if (outformat == FORMAT_ASN1) {
    143             i = i2d_SSL_SESSION_bio(out, x);
    144         } else if (outformat == FORMAT_PEM) {
    145             i = PEM_write_bio_SSL_SESSION(out, x);
    146         } else if (outformat == FORMAT_NSS) {
    147             i = SSL_SESSION_print_keylog(out, x);
    148         } else {
    149             BIO_printf(bio_err, "bad output format specified for outfile\n");
    150             goto end;
    151         }
    152         if (!i) {
    153             BIO_printf(bio_err, "unable to write SSL_SESSION\n");
    154             goto end;
    155         }
    156     } else if (!noout && (peer != NULL)) { /* just print the certificate */
    157         if (outformat == FORMAT_ASN1) {
    158             i = (int)i2d_X509_bio(out, peer);
    159         } else if (outformat == FORMAT_PEM) {
    160             i = PEM_write_bio_X509(out, peer);
    161         } else {
    162             BIO_printf(bio_err, "bad output format specified for outfile\n");
    163             goto end;
    164         }
    165         if (!i) {
    166             BIO_printf(bio_err, "unable to write X509\n");
    167             goto end;
    168         }
    169     }
    170     ret = 0;
    171  end:
    172     BIO_free_all(out);
    173     SSL_SESSION_free(x);
    174     return ret;
    175 }
    176 
    177 static SSL_SESSION *load_sess_id(char *infile, int format)
    178 {
    179     SSL_SESSION *x = NULL;
    180     BIO *in = NULL;
    181 
    182     in = bio_open_default(infile, 'r', format);
    183     if (in == NULL)
    184         goto end;
    185     if (format == FORMAT_ASN1)
    186         x = d2i_SSL_SESSION_bio(in, NULL);
    187     else
    188         x = PEM_read_bio_SSL_SESSION(in, NULL, NULL, NULL);
    189     if (x == NULL) {
    190         BIO_printf(bio_err, "unable to load SSL_SESSION\n");
    191         ERR_print_errors(bio_err);
    192         goto end;
    193     }
    194 
    195  end:
    196     BIO_free(in);
    197     return x;
    198 }
    199