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 <time.h>
14#include "apps.h"
15#include "progs.h"
16#include <openssl/err.h>
17#include <openssl/objects.h>
18#include <openssl/evp.h>
19#include <openssl/x509.h>
20#include <openssl/pkcs7.h>
21#include <openssl/pem.h>
22
23typedef enum OPTION_choice {
24    OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
25    OPT_INFORM, OPT_OUTFORM, OPT_IN, OPT_OUT, OPT_NOOUT,
26    OPT_TEXT, OPT_PRINT, OPT_PRINT_CERTS, OPT_ENGINE
27} OPTION_CHOICE;
28
29const OPTIONS pkcs7_options[] = {
30    {"help", OPT_HELP, '-', "Display this summary"},
31    {"inform", OPT_INFORM, 'F', "Input format - DER or PEM"},
32    {"in", OPT_IN, '<', "Input file"},
33    {"outform", OPT_OUTFORM, 'F', "Output format - DER or PEM"},
34    {"out", OPT_OUT, '>', "Output file"},
35    {"noout", OPT_NOOUT, '-', "Don't output encoded data"},
36    {"text", OPT_TEXT, '-', "Print full details of certificates"},
37    {"print", OPT_PRINT, '-', "Print out all fields of the PKCS7 structure"},
38    {"print_certs", OPT_PRINT_CERTS, '-',
39     "Print_certs  print any certs or crl in the input"},
40#ifndef OPENSSL_NO_ENGINE
41    {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
42#endif
43    {NULL}
44};
45
46int pkcs7_main(int argc, char **argv)
47{
48    ENGINE *e = NULL;
49    PKCS7 *p7 = NULL;
50    BIO *in = NULL, *out = NULL;
51    int informat = FORMAT_PEM, outformat = FORMAT_PEM;
52    char *infile = NULL, *outfile = NULL, *prog;
53    int i, print_certs = 0, text = 0, noout = 0, p7_print = 0, ret = 1;
54    OPTION_CHOICE o;
55
56    prog = opt_init(argc, argv, pkcs7_options);
57    while ((o = opt_next()) != OPT_EOF) {
58        switch (o) {
59        case OPT_EOF:
60        case OPT_ERR:
61 opthelp:
62            BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
63            goto end;
64        case OPT_HELP:
65            opt_help(pkcs7_options);
66            ret = 0;
67            goto end;
68        case OPT_INFORM:
69            if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
70                goto opthelp;
71            break;
72        case OPT_OUTFORM:
73            if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
74                goto opthelp;
75            break;
76        case OPT_IN:
77            infile = opt_arg();
78            break;
79        case OPT_OUT:
80            outfile = opt_arg();
81            break;
82        case OPT_NOOUT:
83            noout = 1;
84            break;
85        case OPT_TEXT:
86            text = 1;
87            break;
88        case OPT_PRINT:
89            p7_print = 1;
90            break;
91        case OPT_PRINT_CERTS:
92            print_certs = 1;
93            break;
94        case OPT_ENGINE:
95            e = setup_engine(opt_arg(), 0);
96            break;
97        }
98    }
99    argc = opt_num_rest();
100    if (argc != 0)
101        goto opthelp;
102
103    in = bio_open_default(infile, 'r', informat);
104    if (in == NULL)
105        goto end;
106
107    if (informat == FORMAT_ASN1)
108        p7 = d2i_PKCS7_bio(in, NULL);
109    else
110        p7 = PEM_read_bio_PKCS7(in, NULL, NULL, NULL);
111    if (p7 == NULL) {
112        BIO_printf(bio_err, "unable to load PKCS7 object\n");
113        ERR_print_errors(bio_err);
114        goto end;
115    }
116
117    out = bio_open_default(outfile, 'w', outformat);
118    if (out == NULL)
119        goto end;
120
121    if (p7_print)
122        PKCS7_print_ctx(out, p7, 0, NULL);
123
124    if (print_certs) {
125        STACK_OF(X509) *certs = NULL;
126        STACK_OF(X509_CRL) *crls = NULL;
127
128        i = OBJ_obj2nid(p7->type);
129        switch (i) {
130        case NID_pkcs7_signed:
131            if (p7->d.sign != NULL) {
132                certs = p7->d.sign->cert;
133                crls = p7->d.sign->crl;
134            }
135            break;
136        case NID_pkcs7_signedAndEnveloped:
137            if (p7->d.signed_and_enveloped != NULL) {
138                certs = p7->d.signed_and_enveloped->cert;
139                crls = p7->d.signed_and_enveloped->crl;
140            }
141            break;
142        default:
143            break;
144        }
145
146        if (certs != NULL) {
147            X509 *x;
148
149            for (i = 0; i < sk_X509_num(certs); i++) {
150                x = sk_X509_value(certs, i);
151                if (text)
152                    X509_print(out, x);
153                else
154                    dump_cert_text(out, x);
155
156                if (!noout)
157                    PEM_write_bio_X509(out, x);
158                BIO_puts(out, "\n");
159            }
160        }
161        if (crls != NULL) {
162            X509_CRL *crl;
163
164            for (i = 0; i < sk_X509_CRL_num(crls); i++) {
165                crl = sk_X509_CRL_value(crls, i);
166
167                X509_CRL_print_ex(out, crl, get_nameopt());
168
169                if (!noout)
170                    PEM_write_bio_X509_CRL(out, crl);
171                BIO_puts(out, "\n");
172            }
173        }
174
175        ret = 0;
176        goto end;
177    }
178
179    if (!noout) {
180        if (outformat == FORMAT_ASN1)
181            i = i2d_PKCS7_bio(out, p7);
182        else
183            i = PEM_write_bio_PKCS7(out, p7);
184
185        if (!i) {
186            BIO_printf(bio_err, "unable to write pkcs7 object\n");
187            ERR_print_errors(bio_err);
188            goto end;
189        }
190    }
191    ret = 0;
192 end:
193    PKCS7_free(p7);
194    release_engine(e);
195    BIO_free(in);
196    BIO_free_all(out);
197    return ret;
198}
199