218 lines
6.2 KiB
C
218 lines
6.2 KiB
C
/*
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* Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <stdio.h>
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#include <string.h>
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#include <sys/types.h>
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#include "apps.h"
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#include "progs.h"
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#include <openssl/err.h>
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#include <openssl/evp.h>
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#include <openssl/x509.h>
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#include <openssl/pkcs7.h>
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#include <openssl/pem.h>
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#include <openssl/objects.h>
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static int add_certs_from_file(STACK_OF(X509) *stack, char *certfile);
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typedef enum OPTION_choice {
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OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
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OPT_INFORM, OPT_OUTFORM, OPT_IN, OPT_OUT, OPT_NOCRL, OPT_CERTFILE
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} OPTION_CHOICE;
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const OPTIONS crl2pkcs7_options[] = {
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{"help", OPT_HELP, '-', "Display this summary"},
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{"inform", OPT_INFORM, 'F', "Input format - DER or PEM"},
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{"outform", OPT_OUTFORM, 'F', "Output format - DER or PEM"},
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{"in", OPT_IN, '<', "Input file"},
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{"out", OPT_OUT, '>', "Output file"},
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{"nocrl", OPT_NOCRL, '-', "No crl to load, just certs from '-certfile'"},
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{"certfile", OPT_CERTFILE, '<',
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"File of chain of certs to a trusted CA; can be repeated"},
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{NULL}
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};
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int crl2pkcs7_main(int argc, char **argv)
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{
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BIO *in = NULL, *out = NULL;
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PKCS7 *p7 = NULL;
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PKCS7_SIGNED *p7s = NULL;
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STACK_OF(OPENSSL_STRING) *certflst = NULL;
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STACK_OF(X509) *cert_stack = NULL;
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STACK_OF(X509_CRL) *crl_stack = NULL;
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X509_CRL *crl = NULL;
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char *infile = NULL, *outfile = NULL, *prog, *certfile;
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int i = 0, informat = FORMAT_PEM, outformat = FORMAT_PEM, ret = 1, nocrl =
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0;
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OPTION_CHOICE o;
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prog = opt_init(argc, argv, crl2pkcs7_options);
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while ((o = opt_next()) != OPT_EOF) {
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switch (o) {
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case OPT_EOF:
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case OPT_ERR:
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opthelp:
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BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
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goto end;
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case OPT_HELP:
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opt_help(crl2pkcs7_options);
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ret = 0;
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goto end;
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case OPT_INFORM:
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if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
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goto opthelp;
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break;
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case OPT_OUTFORM:
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if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
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goto opthelp;
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break;
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case OPT_IN:
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infile = opt_arg();
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break;
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case OPT_OUT:
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outfile = opt_arg();
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break;
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case OPT_NOCRL:
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nocrl = 1;
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break;
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case OPT_CERTFILE:
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if ((certflst == NULL)
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&& (certflst = sk_OPENSSL_STRING_new_null()) == NULL)
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goto end;
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if (!sk_OPENSSL_STRING_push(certflst, opt_arg()))
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goto end;
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break;
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}
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}
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argc = opt_num_rest();
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if (argc != 0)
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goto opthelp;
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if (!nocrl) {
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in = bio_open_default(infile, 'r', informat);
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if (in == NULL)
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goto end;
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if (informat == FORMAT_ASN1)
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crl = d2i_X509_CRL_bio(in, NULL);
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else if (informat == FORMAT_PEM)
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crl = PEM_read_bio_X509_CRL(in, NULL, NULL, NULL);
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if (crl == NULL) {
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BIO_printf(bio_err, "unable to load CRL\n");
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ERR_print_errors(bio_err);
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goto end;
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}
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}
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if ((p7 = PKCS7_new()) == NULL)
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goto end;
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if ((p7s = PKCS7_SIGNED_new()) == NULL)
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goto end;
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p7->type = OBJ_nid2obj(NID_pkcs7_signed);
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p7->d.sign = p7s;
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p7s->contents->type = OBJ_nid2obj(NID_pkcs7_data);
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if (!ASN1_INTEGER_set(p7s->version, 1))
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goto end;
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if ((crl_stack = sk_X509_CRL_new_null()) == NULL)
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goto end;
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p7s->crl = crl_stack;
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if (crl != NULL) {
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sk_X509_CRL_push(crl_stack, crl);
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crl = NULL; /* now part of p7 for OPENSSL_freeing */
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}
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if ((cert_stack = sk_X509_new_null()) == NULL)
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goto end;
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p7s->cert = cert_stack;
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if (certflst != NULL)
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for (i = 0; i < sk_OPENSSL_STRING_num(certflst); i++) {
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certfile = sk_OPENSSL_STRING_value(certflst, i);
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if (add_certs_from_file(cert_stack, certfile) < 0) {
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BIO_printf(bio_err, "error loading certificates\n");
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ERR_print_errors(bio_err);
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goto end;
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}
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}
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out = bio_open_default(outfile, 'w', outformat);
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if (out == NULL)
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goto end;
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if (outformat == FORMAT_ASN1)
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i = i2d_PKCS7_bio(out, p7);
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else if (outformat == FORMAT_PEM)
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i = PEM_write_bio_PKCS7(out, p7);
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if (!i) {
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BIO_printf(bio_err, "unable to write pkcs7 object\n");
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ERR_print_errors(bio_err);
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goto end;
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}
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ret = 0;
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end:
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sk_OPENSSL_STRING_free(certflst);
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BIO_free(in);
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BIO_free_all(out);
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PKCS7_free(p7);
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X509_CRL_free(crl);
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return ret;
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}
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/*-
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*----------------------------------------------------------------------
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* int add_certs_from_file
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*
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* Read a list of certificates to be checked from a file.
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*
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* Results:
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* number of certs added if successful, -1 if not.
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*----------------------------------------------------------------------
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*/
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static int add_certs_from_file(STACK_OF(X509) *stack, char *certfile)
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{
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BIO *in = NULL;
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int count = 0;
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int ret = -1;
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STACK_OF(X509_INFO) *sk = NULL;
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X509_INFO *xi;
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in = BIO_new_file(certfile, "r");
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if (in == NULL) {
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BIO_printf(bio_err, "error opening the file, %s\n", certfile);
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goto end;
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}
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/* This loads from a file, a stack of x509/crl/pkey sets */
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sk = PEM_X509_INFO_read_bio(in, NULL, NULL, NULL);
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if (sk == NULL) {
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BIO_printf(bio_err, "error reading the file, %s\n", certfile);
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goto end;
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}
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/* scan over it and pull out the CRL's */
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while (sk_X509_INFO_num(sk)) {
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xi = sk_X509_INFO_shift(sk);
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if (xi->x509 != NULL) {
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sk_X509_push(stack, xi->x509);
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xi->x509 = NULL;
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count++;
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}
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X509_INFO_free(xi);
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}
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ret = count;
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end:
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/* never need to OPENSSL_free x */
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BIO_free(in);
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sk_X509_INFO_free(sk);
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return ret;
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}
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