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