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
21typedef 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
27const 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
41static SSL_SESSION *load_sess_id(char *file, int format);
42
43int 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
170static 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