apps/pkcs7.c

   1 /*
   2  * Copyright 1995-2020 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 DEFINE_STACK_OF(X509)
  24 DEFINE_STACK_OF(X509_CRL)
  25
  26 typedef enum OPTION_choice {
  27     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  28     OPT_INFORM, OPT_OUTFORM, OPT_IN, OPT_OUT, OPT_NOOUT,
  29     OPT_TEXT, OPT_PRINT, OPT_PRINT_CERTS, OPT_ENGINE,
  30     OPT_PROV_ENUM
  31 } OPTION_CHOICE;
  32
  33 const OPTIONS pkcs7_options[] = {
  34     OPT_SECTION("General"),
  35     {"help", OPT_HELP, '-', "Display this summary"},
  36 #ifndef OPENSSL_NO_ENGINE
  37     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
  38 #endif
  39
  40     OPT_SECTION("Input"),
  41     {"in", OPT_IN, '<', "Input file"},
  42     {"inform", OPT_INFORM, 'F', "Input format - DER or PEM"},
  43
  44     OPT_SECTION("Output"),
  45     {"outform", OPT_OUTFORM, 'F', "Output format - DER or PEM"},
  46     {"out", OPT_OUT, '>', "Output file"},
  47     {"noout", OPT_NOOUT, '-', "Don't output encoded data"},
  48     {"text", OPT_TEXT, '-', "Print full details of certificates"},
  49     {"print", OPT_PRINT, '-', "Print out all fields of the PKCS7 structure"},
  50     {"print_certs", OPT_PRINT_CERTS, '-',
  51      "Print_certs  print any certs or crl in the input"},
  52
  53     OPT_PROV_OPTIONS,
  54     {NULL}
  55 };
  56
  57 int pkcs7_main(int argc, char **argv)
  58 {
  59     ENGINE *e = NULL;
  60     PKCS7 *p7 = NULL;
  61     BIO *in = NULL, *out = NULL;
  62     int informat = FORMAT_PEM, outformat = FORMAT_PEM;
  63     char *infile = NULL, *outfile = NULL, *prog;
  64     int i, print_certs = 0, text = 0, noout = 0, p7_print = 0, ret = 1;
  65     OPTION_CHOICE o;
  66
  67     prog = opt_init(argc, argv, pkcs7_options);
  68     while ((o = opt_next()) != OPT_EOF) {
  69         switch (o) {
  70         case OPT_EOF:
  71         case OPT_ERR:
  72  opthelp:
  73             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
  74             goto end;
  75         case OPT_HELP:
  76             opt_help(pkcs7_options);
  77             ret = 0;
  78             goto end;
  79         case OPT_INFORM:
  80             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
  81                 goto opthelp;
  82             break;
  83         case OPT_OUTFORM:
  84             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
  85                 goto opthelp;
  86             break;
  87         case OPT_IN:
  88             infile = opt_arg();
  89             break;
  90         case OPT_OUT:
  91             outfile = opt_arg();
  92             break;
  93         case OPT_NOOUT:
  94             noout = 1;
  95             break;
  96         case OPT_TEXT:
  97             text = 1;
  98             break;
  99         case OPT_PRINT:
 100             p7_print = 1;
 101             break;
 102         case OPT_PRINT_CERTS:
 103             print_certs = 1;
 104             break;
 105         case OPT_ENGINE:
 106             e = setup_engine(opt_arg(), 0);
 107             break;
 108         case OPT_PROV_CASES:
 109             if (!opt_provider(o))
 110                 goto end;
 111             break;
 112         }
 113     }
 114     argc = opt_num_rest();
 115     if (argc != 0)
 116         goto opthelp;
 117
 118     in = bio_open_default(infile, 'r', informat);
 119     if (in == NULL)
 120         goto end;
 121
 122     if (informat == FORMAT_ASN1)
 123         p7 = d2i_PKCS7_bio(in, NULL);
 124     else
 125         p7 = PEM_read_bio_PKCS7(in, NULL, NULL, NULL);
 126     if (p7 == NULL) {
 127         BIO_printf(bio_err, "unable to load PKCS7 object\n");
 128         ERR_print_errors(bio_err);
 129         goto end;
 130     }
 131
 132     out = bio_open_default(outfile, 'w', outformat);
 133     if (out == NULL)
 134         goto end;
 135
 136     if (p7_print)
 137         PKCS7_print_ctx(out, p7, 0, NULL);
 138
 139     if (print_certs) {
 140         STACK_OF(X509) *certs = NULL;
 141         STACK_OF(X509_CRL) *crls = NULL;
 142
 143         i = OBJ_obj2nid(p7->type);
 144         switch (i) {
 145         case NID_pkcs7_signed:
 146             if (p7->d.sign != NULL) {
 147                 certs = p7->d.sign->cert;
 148                 crls = p7->d.sign->crl;
 149             }
 150             break;
 151         case NID_pkcs7_signedAndEnveloped:
 152             if (p7->d.signed_and_enveloped != NULL) {
 153                 certs = p7->d.signed_and_enveloped->cert;
 154                 crls = p7->d.signed_and_enveloped->crl;
 155             }
 156             break;
 157         default:
 158             break;
 159         }
 160
 161         if (certs != NULL) {
 162             X509 *x;
 163
 164             for (i = 0; i < sk_X509_num(certs); i++) {
 165                 x = sk_X509_value(certs, i);
 166                 if (text)
 167                     X509_print(out, x);
 168                 else
 169                     dump_cert_text(out, x);
 170
 171                 if (!noout)
 172                     PEM_write_bio_X509(out, x);
 173                 BIO_puts(out, "\n");
 174             }
 175         }
 176         if (crls != NULL) {
 177             X509_CRL *crl;
 178
 179             for (i = 0; i < sk_X509_CRL_num(crls); i++) {
 180                 crl = sk_X509_CRL_value(crls, i);
 181
 182                 X509_CRL_print_ex(out, crl, get_nameopt());
 183
 184                 if (!noout)
 185                     PEM_write_bio_X509_CRL(out, crl);
 186                 BIO_puts(out, "\n");
 187             }
 188         }
 189
 190         ret = 0;
 191         goto end;
 192     }
 193
 194     if (!noout) {
 195         if (outformat == FORMAT_ASN1)
 196             i = i2d_PKCS7_bio(out, p7);
 197         else
 198             i = PEM_write_bio_PKCS7(out, p7);
 199
 200         if (!i) {
 201             BIO_printf(bio_err, "unable to write pkcs7 object\n");
 202             ERR_print_errors(bio_err);
 203             goto end;
 204         }
 205     }
 206     ret = 0;
 207  end:
 208     PKCS7_free(p7);
 209     release_engine(e);
 210     BIO_free(in);
 211     BIO_free_all(out);
 212     return ret;
 213 }