verify.c
/* apps/verify.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "apps.h"
#include <openssl/bio.h>
#include <openssl/err.h>
#include <openssl/x509.h>
#include <openssl/x509v3.h>
#include <openssl/pem.h>
#undef PROG
#define PROG verify_main
static int MS_CALLBACK cb(int ok, X509_STORE_CTX *ctx);
static int check(X509_STORE *ctx, char *file, STACK_OF(X509) *uchain,
STACK_OF(X509) *tchain, int purpose, ENGINE *e);
static STACK_OF(X509) *load_untrusted(char *file);
static int v_verbose = 0, vflags = 0;
int MAIN(int, char **);
int MAIN(int argc, char **argv)
{
ENGINE *e = NULL;
int i, ret = 1, badarg = 0;
int purpose = -1;
char *CApath = NULL, *CAfile = NULL;
char *untfile = NULL, *trustfile = NULL;
STACK_OF(X509) *untrusted = NULL, *trusted = NULL;
X509_STORE *cert_ctx = NULL;
X509_LOOKUP *lookup = NULL;
X509_VERIFY_PARAM *vpm = NULL;
#ifndef OPENSSL_NO_ENGINE
char *engine = NULL;
#endif
cert_ctx = X509_STORE_new();
if (cert_ctx == NULL)
goto end;
X509_STORE_set_verify_cb_func(cert_ctx, cb);
ERR_load_crypto_strings();
apps_startup();
if (bio_err == NULL)
if ((bio_err = BIO_new(BIO_s_file())) != NULL)
BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);
if (!load_config(bio_err, NULL))
goto end;
argc--;
argv++;
for (;;) {
if (argc >= 1) {
if (strcmp(*argv, "-CApath") == 0) {
if (argc-- < 1)
goto end;
CApath = *(++argv);
} else if (strcmp(*argv, "-CAfile") == 0) {
if (argc-- < 1)
goto end;
CAfile = *(++argv);
} else if (args_verify(&argv, &argc, &badarg, bio_err, &vpm)) {
if (badarg)
goto end;
continue;
} else if (strcmp(*argv, "-untrusted") == 0) {
if (argc-- < 1)
goto end;
untfile = *(++argv);
} else if (strcmp(*argv, "-trusted") == 0) {
if (argc-- < 1)
goto end;
trustfile = *(++argv);
}
#ifndef OPENSSL_NO_ENGINE
else if (strcmp(*argv, "-engine") == 0) {
if (--argc < 1)
goto end;
engine = *(++argv);
}
#endif
else if (strcmp(*argv, "-help") == 0)
goto end;
else if (strcmp(*argv, "-verbose") == 0)
v_verbose = 1;
else if (argv[0][0] == '-')
goto end;
else
break;
argc--;
argv++;
} else
break;
}
#ifndef OPENSSL_NO_ENGINE
e = setup_engine(bio_err, engine, 0);
#endif
if (vpm)
X509_STORE_set1_param(cert_ctx, vpm);
lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_file());
if (lookup == NULL)
abort();
if (CAfile) {
i = X509_LOOKUP_load_file(lookup, CAfile, X509_FILETYPE_PEM);
if (!i) {
BIO_printf(bio_err, "Error loading file %s\n", CAfile);
ERR_print_errors(bio_err);
goto end;
}
} else
X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_hash_dir());
if (lookup == NULL)
abort();
if (CApath) {
i = X509_LOOKUP_add_dir(lookup, CApath, X509_FILETYPE_PEM);
if (!i) {
BIO_printf(bio_err, "Error loading directory %s\n", CApath);
ERR_print_errors(bio_err);
goto end;
}
} else
X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
ERR_clear_error();
if (untfile) {
if (!(untrusted = load_untrusted(untfile))) {
BIO_printf(bio_err, "Error loading untrusted file %s\n", untfile);
ERR_print_errors(bio_err);
goto end;
}
}
if (trustfile) {
if (!(trusted = load_untrusted(trustfile))) {
BIO_printf(bio_err, "Error loading untrusted file %s\n",
trustfile);
ERR_print_errors(bio_err);
goto end;
}
}
if (argc < 1)
check(cert_ctx, NULL, untrusted, trusted, purpose, e);
else
for (i = 0; i < argc; i++)
check(cert_ctx, argv[i], untrusted, trusted, purpose, e);
ret = 0;
end:
if (ret == 1) {
BIO_printf(bio_err,
"usage: verify [-verbose] [-CApath path] [-CAfile file] [-purpose purpose] [-crl_check]");
#ifndef OPENSSL_NO_ENGINE
BIO_printf(bio_err, " [-engine e]");
#endif
BIO_printf(bio_err, " cert1 cert2 ...\n");
BIO_printf(bio_err, "recognized usages:\n");
for (i = 0; i < X509_PURPOSE_get_count(); i++) {
X509_PURPOSE *ptmp;
ptmp = X509_PURPOSE_get0(i);
BIO_printf(bio_err, "\t%-10s\t%s\n",
X509_PURPOSE_get0_sname(ptmp),
X509_PURPOSE_get0_name(ptmp));
}
}
if (vpm)
X509_VERIFY_PARAM_free(vpm);
if (cert_ctx != NULL)
X509_STORE_free(cert_ctx);
sk_X509_pop_free(untrusted, X509_free);
sk_X509_pop_free(trusted, X509_free);
apps_shutdown();
OPENSSL_EXIT(ret);
}
static int check(X509_STORE *ctx, char *file, STACK_OF(X509) *uchain,
STACK_OF(X509) *tchain, int purpose, ENGINE *e)
{
X509 *x = NULL;
int i = 0, ret = 0;
X509_STORE_CTX *csc;
x = load_cert(bio_err, file, FORMAT_PEM, NULL, e, "certificate file");
if (x == NULL)
goto end;
fprintf(stdout, "%s: ", (file == NULL) ? "stdin" : file);
csc = X509_STORE_CTX_new();
if (csc == NULL) {
ERR_print_errors(bio_err);
goto end;
}
X509_STORE_set_flags(ctx, vflags);
if (!X509_STORE_CTX_init(csc, ctx, x, uchain)) {
ERR_print_errors(bio_err);
goto end;
}
if (tchain)
X509_STORE_CTX_trusted_stack(csc, tchain);
if (purpose >= 0)
X509_STORE_CTX_set_purpose(csc, purpose);
i = X509_verify_cert(csc);
X509_STORE_CTX_free(csc);
ret = 0;
end:
if (i > 0) {
fprintf(stdout, "OK\n");
ret = 1;
} else
ERR_print_errors(bio_err);
if (x != NULL)
X509_free(x);
return (ret);
}
static STACK_OF(X509) *load_untrusted(char *certfile)
{
STACK_OF(X509_INFO) *sk = NULL;
STACK_OF(X509) *stack = NULL, *ret = NULL;
BIO *in = NULL;
X509_INFO *xi;
if (!(stack = sk_X509_new_null())) {
BIO_printf(bio_err, "memory allocation failure\n");
goto end;
}
if (!(in = BIO_new_file(certfile, "r"))) {
BIO_printf(bio_err, "error opening the file, %s\n", certfile);
goto end;
}
/* This loads from a file, a stack of x509/crl/pkey sets */
if (!(sk = PEM_X509_INFO_read_bio(in, NULL, NULL, NULL))) {
BIO_printf(bio_err, "error reading the file, %s\n", certfile);
goto end;
}
/* scan over it and pull out the certs */
while (sk_X509_INFO_num(sk)) {
xi = sk_X509_INFO_shift(sk);
if (xi->x509 != NULL) {
sk_X509_push(stack, xi->x509);
xi->x509 = NULL;
}
X509_INFO_free(xi);
}
if (!sk_X509_num(stack)) {
BIO_printf(bio_err, "no certificates in file, %s\n", certfile);
sk_X509_free(stack);
goto end;
}
ret = stack;
end:
BIO_free(in);
sk_X509_INFO_free(sk);
return (ret);
}
static int MS_CALLBACK cb(int ok, X509_STORE_CTX *ctx)
{
char buf[256];
if (!ok) {
if (ctx->current_cert) {
X509_NAME_oneline(X509_get_subject_name(ctx->current_cert), buf,
sizeof buf);
printf("%s\n", buf);
}
printf("error %d at %d depth lookup:%s\n", ctx->error,
ctx->error_depth, X509_verify_cert_error_string(ctx->error));
if (ctx->error == X509_V_ERR_CERT_HAS_EXPIRED)
ok = 1;
/*
* since we are just checking the certificates, it is ok if they are
* self signed. But we should still warn the user.
*/
if (ctx->error == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT)
ok = 1;
/* Continue after extension errors too */
if (ctx->error == X509_V_ERR_INVALID_CA)
ok = 1;
if (ctx->error == X509_V_ERR_INVALID_NON_CA)
ok = 1;
if (ctx->error == X509_V_ERR_PATH_LENGTH_EXCEEDED)
ok = 1;
if (ctx->error == X509_V_ERR_INVALID_PURPOSE)
ok = 1;
if (ctx->error == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT)
ok = 1;
if (ctx->error == X509_V_ERR_CRL_HAS_EXPIRED)
ok = 1;
if (ctx->error == X509_V_ERR_CRL_NOT_YET_VALID)
ok = 1;
if (ctx->error == X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION)
ok = 1;
if (ctx->error == X509_V_ERR_NO_EXPLICIT_POLICY)
policies_print(NULL, ctx);
return ok;
}
if ((ctx->error == X509_V_OK) && (ok == 2))
policies_print(NULL, ctx);
if (!v_verbose)
ERR_clear_error();
return (ok);
}
