apps/pkcs7.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 <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
  23 typedef 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
  29 const 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
  46 int 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 }