X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=apps%2Fverify.c;h=fd407646f519ab9cd50273dfdb6deb4eba5836e9;hp=809f4c43fa6b13f76ffdf4ad2a0e50cd0d21126b;hb=HEAD;hpb=d02b48c63a58ea4367a0e905979f140b7d090f86 diff --git a/apps/verify.c b/apps/verify.c index 809f4c43fa..93b214281e 100644 --- a/apps/verify.c +++ b/apps/verify.c @@ -1,240 +1,393 @@ -/* apps/verify.c */ -/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com) - * All rights reserved. +/* + * Copyright 1995-2022 The OpenSSL Project Authors. 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.] + * Licensed under the Apache License 2.0 (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html */ #include #include #include #include "apps.h" -#include "bio.h" -#include "err.h" -#include "x509.h" -#include "pem.h" - -#undef PROG -#define PROG verify_main - -#ifndef NOPROTO -static int MS_CALLBACK cb(int ok, X509_STORE_CTX *ctx); -static int check(X509_STORE *ctx,char *file); -#else -static int MS_CALLBACK cb(); -static int check(); +#include "progs.h" +#include +#include +#include +#include +#include + +static int cb(int ok, X509_STORE_CTX *ctx); +static int check(X509_STORE *ctx, const char *file, + STACK_OF(X509) *uchain, STACK_OF(X509) *tchain, + STACK_OF(X509_CRL) *crls, int show_chain, + STACK_OF(OPENSSL_STRING) *opts); +static int v_verbose = 0, vflags = 0; + +typedef enum OPTION_choice { + OPT_COMMON, + OPT_ENGINE, OPT_CAPATH, OPT_CAFILE, OPT_CASTORE, + OPT_NOCAPATH, OPT_NOCAFILE, OPT_NOCASTORE, + OPT_UNTRUSTED, OPT_TRUSTED, OPT_CRLFILE, OPT_CRL_DOWNLOAD, OPT_SHOW_CHAIN, + OPT_V_ENUM, OPT_NAMEOPT, OPT_VFYOPT, + OPT_VERBOSE, + OPT_PROV_ENUM +} OPTION_CHOICE; + +const OPTIONS verify_options[] = { + {OPT_HELP_STR, 1, '-', "Usage: %s [options] [cert...]\n"}, + + OPT_SECTION("General"), + {"help", OPT_HELP, '-', "Display this summary"}, +#ifndef OPENSSL_NO_ENGINE + {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"}, #endif + {"verbose", OPT_VERBOSE, '-', + "Print extra information about the operations being performed."}, + {"nameopt", OPT_NAMEOPT, 's', "Certificate subject/issuer name printing options"}, + + OPT_SECTION("Certificate chain"), + {"trusted", OPT_TRUSTED, '<', "A file of trusted certificates"}, + {"CAfile", OPT_CAFILE, '<', "A file of trusted certificates"}, + {"CApath", OPT_CAPATH, '/', "A directory of files with trusted certificates"}, + {"CAstore", OPT_CASTORE, ':', "URI to a store of trusted certificates"}, + {"no-CAfile", OPT_NOCAFILE, '-', + "Do not load the default trusted certificates file"}, + {"no-CApath", OPT_NOCAPATH, '-', + "Do not load trusted certificates from the default directory"}, + {"no-CAstore", OPT_NOCASTORE, '-', + "Do not load trusted certificates from the default certificates store"}, + {"untrusted", OPT_UNTRUSTED, '<', "A file of untrusted certificates"}, + {"CRLfile", OPT_CRLFILE, '<', + "File containing one or more CRL's (in PEM format) to load"}, + {"crl_download", OPT_CRL_DOWNLOAD, '-', + "Try downloading CRL information for certificates via their CDP entries"}, + {"show_chain", OPT_SHOW_CHAIN, '-', + "Display information about the certificate chain"}, + + OPT_V_OPTIONS, + {"vfyopt", OPT_VFYOPT, 's', "Verification parameter in n:v form"}, + + OPT_PROV_OPTIONS, + + OPT_PARAMETERS(), + {"cert", 0, 0, "Certificate(s) to verify (optional; stdin used otherwise)"}, + {NULL} +}; + +int verify_main(int argc, char **argv) +{ + ENGINE *e = NULL; + STACK_OF(X509) *untrusted = NULL, *trusted = NULL; + STACK_OF(X509_CRL) *crls = NULL; + STACK_OF(OPENSSL_STRING) *vfyopts = NULL; + X509_STORE *store = NULL; + X509_VERIFY_PARAM *vpm = NULL; + const char *prog, *CApath = NULL, *CAfile = NULL, *CAstore = NULL; + int noCApath = 0, noCAfile = 0, noCAstore = 0; + int vpmtouched = 0, crl_download = 0, show_chain = 0, i = 0, ret = 1; + OPTION_CHOICE o; + + if ((vpm = X509_VERIFY_PARAM_new()) == NULL) + goto end; + + prog = opt_init(argc, argv, verify_options); + while ((o = opt_next()) != OPT_EOF) { + switch (o) { + case OPT_EOF: + case OPT_ERR: + opthelp: + BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); + goto end; + case OPT_HELP: + opt_help(verify_options); + BIO_printf(bio_err, "\nRecognized certificate chain purposes:\n"); + for (i = 0; i < X509_PURPOSE_get_count(); i++) { + X509_PURPOSE *ptmp = X509_PURPOSE_get0(i); + + BIO_printf(bio_err, " %-15s %s\n", + X509_PURPOSE_get0_sname(ptmp), + X509_PURPOSE_get0_name(ptmp)); + } + + BIO_printf(bio_err, "Recognized certificate policy names:\n"); + for (i = 0; i < X509_VERIFY_PARAM_get_count(); i++) { + const X509_VERIFY_PARAM *vptmp = X509_VERIFY_PARAM_get0(i); + + BIO_printf(bio_err, " %s\n", + X509_VERIFY_PARAM_get0_name(vptmp)); + } + ret = 0; + goto end; + case OPT_V_CASES: + if (!opt_verify(o, vpm)) + goto end; + vpmtouched++; + break; + case OPT_CAPATH: + CApath = opt_arg(); + break; + case OPT_CAFILE: + CAfile = opt_arg(); + break; + case OPT_CASTORE: + CAstore = opt_arg(); + break; + case OPT_NOCAPATH: + noCApath = 1; + break; + case OPT_NOCAFILE: + noCAfile = 1; + break; + case OPT_NOCASTORE: + noCAstore = 1; + break; + case OPT_UNTRUSTED: + /* Zero or more times */ + if (!load_certs(opt_arg(), 0, &untrusted, NULL, + "untrusted certificates")) + goto end; + break; + case OPT_TRUSTED: + /* Zero or more times */ + noCAfile = 1; + noCApath = 1; + noCAstore = 1; + if (!load_certs(opt_arg(), 0, &trusted, NULL, "trusted certificates")) + goto end; + break; + case OPT_CRLFILE: + /* Zero or more times */ + if (!load_crls(opt_arg(), &crls, NULL, "other CRLs")) + goto end; + break; + case OPT_CRL_DOWNLOAD: + crl_download = 1; + break; + case OPT_ENGINE: + if ((e = setup_engine(opt_arg(), 0)) == NULL) { + /* Failure message already displayed */ + goto end; + } + break; + case OPT_SHOW_CHAIN: + show_chain = 1; + break; + case OPT_NAMEOPT: + if (!set_nameopt(opt_arg())) + goto end; + break; + case OPT_VFYOPT: + if (!vfyopts) + vfyopts = sk_OPENSSL_STRING_new_null(); + if (!vfyopts || !sk_OPENSSL_STRING_push(vfyopts, opt_arg())) + goto opthelp; + break; + case OPT_VERBOSE: + v_verbose = 1; + break; + case OPT_PROV_CASES: + if (!opt_provider(o)) + goto end; + break; + } + } + + /* Extra arguments are certificates to verify. */ + argc = opt_num_rest(); + argv = opt_rest(); + + if (trusted != NULL + && (CAfile != NULL || CApath != NULL || CAstore != NULL)) { + BIO_printf(bio_err, + "%s: Cannot use -trusted with -CAfile, -CApath or -CAstore\n", + prog); + goto end; + } + + if ((store = setup_verify(CAfile, noCAfile, CApath, noCApath, + CAstore, noCAstore)) == NULL) + goto end; + X509_STORE_set_verify_cb(store, cb); + + if (vpmtouched) + X509_STORE_set1_param(store, vpm); + + ERR_clear_error(); + + if (crl_download) + store_setup_crl_download(store); + + ret = 0; + if (argc < 1) { + if (check(store, NULL, untrusted, trusted, crls, show_chain, + vfyopts) != 1) + ret = -1; + } else { + for (i = 0; i < argc; i++) + if (check(store, argv[i], untrusted, trusted, crls, show_chain, + vfyopts) != 1) + ret = -1; + } + + end: + X509_VERIFY_PARAM_free(vpm); + X509_STORE_free(store); + OSSL_STACK_OF_X509_free(untrusted); + OSSL_STACK_OF_X509_free(trusted); + sk_X509_CRL_pop_free(crls, X509_CRL_free); + sk_OPENSSL_STRING_free(vfyopts); + release_engine(e); + return (ret < 0 ? 2 : ret); +} + +static int check(X509_STORE *ctx, const char *file, + STACK_OF(X509) *uchain, STACK_OF(X509) *tchain, + STACK_OF(X509_CRL) *crls, int show_chain, + STACK_OF(OPENSSL_STRING) *opts) +{ + X509 *x = NULL; + int i = 0, ret = 0; + X509_STORE_CTX *csc; + STACK_OF(X509) *chain = NULL; + int num_untrusted; + + x = load_cert(file, FORMAT_UNDEF, "certificate file"); + if (x == NULL) + goto end; + + if (opts != NULL) { + for (i = 0; i < sk_OPENSSL_STRING_num(opts); i++) { + char *opt = sk_OPENSSL_STRING_value(opts, i); + if (x509_ctrl_string(x, opt) <= 0) { + BIO_printf(bio_err, "parameter error \"%s\"\n", opt); + ERR_print_errors(bio_err); + X509_free(x); + return 0; + } + } + } + + csc = X509_STORE_CTX_new(); + if (csc == NULL) { + BIO_printf(bio_err, "error %s: X.509 store context allocation failed\n", + (file == NULL) ? "stdin" : file); + goto end; + } + + X509_STORE_set_flags(ctx, vflags); + if (!X509_STORE_CTX_init(csc, ctx, x, uchain)) { + X509_STORE_CTX_free(csc); + BIO_printf(bio_err, + "error %s: X.509 store context initialization failed\n", + (file == NULL) ? "stdin" : file); + goto end; + } + if (tchain != NULL) + X509_STORE_CTX_set0_trusted_stack(csc, tchain); + if (crls != NULL) + X509_STORE_CTX_set0_crls(csc, crls); + i = X509_verify_cert(csc); + if (i > 0 && X509_STORE_CTX_get_error(csc) == X509_V_OK) { + BIO_printf(bio_out, "%s: OK\n", (file == NULL) ? "stdin" : file); + ret = 1; + if (show_chain) { + int j; + + chain = X509_STORE_CTX_get1_chain(csc); + num_untrusted = X509_STORE_CTX_get_num_untrusted(csc); + BIO_printf(bio_out, "Chain:\n"); + for (j = 0; j < sk_X509_num(chain); j++) { + X509 *cert = sk_X509_value(chain, j); + BIO_printf(bio_out, "depth=%d: ", j); + X509_NAME_print_ex_fp(stdout, + X509_get_subject_name(cert), + 0, get_nameopt()); + if (j < num_untrusted) + BIO_printf(bio_out, " (untrusted)"); + BIO_printf(bio_out, "\n"); + } + OSSL_STACK_OF_X509_free(chain); + } + } else { + BIO_printf(bio_err, + "error %s: verification failed\n", + (file == NULL) ? "stdin" : file); + } + X509_STORE_CTX_free(csc); + + end: + if (i <= 0) + ERR_print_errors(bio_err); + X509_free(x); + + return ret; +} + +static int cb(int ok, X509_STORE_CTX *ctx) +{ + int cert_error = X509_STORE_CTX_get_error(ctx); + X509 *current_cert = X509_STORE_CTX_get_current_cert(ctx); + + if (!ok) { + if (current_cert != NULL) { + X509_NAME_print_ex(bio_err, + X509_get_subject_name(current_cert), + 0, get_nameopt()); + BIO_printf(bio_err, "\n"); + } + BIO_printf(bio_err, "%serror %d at %d depth lookup: %s\n", + X509_STORE_CTX_get0_parent_ctx(ctx) ? "[CRL path] " : "", + cert_error, + X509_STORE_CTX_get_error_depth(ctx), + X509_verify_cert_error_string(cert_error)); -static int v_verbose=0; - -int MAIN(argc, argv) -int argc; -char **argv; - { - int i,ret=1; - char *CApath=NULL,*CAfile=NULL; - X509_STORE *cert_ctx=NULL; - X509_LOOKUP *lookup=NULL; - - 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); - - 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 (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; - } - - lookup=X509_STORE_add_lookup(cert_ctx,X509_LOOKUP_file()); - if (lookup == NULL) abort(); - if (!X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM)) - 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 (!X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM)) - X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT); - - - if (argc < 1) check(cert_ctx,NULL); - else - for (i=0; ierror == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT) - ok=1; - else - { - X509_NAME_oneline( - X509_get_subject_name(ctx->current_cert),buf,256); - 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; - } - } - if (!v_verbose) - ERR_clear_error(); - return(ok); - } + /* + * Pretend that some errors are ok, so they don't stop further + * processing of the certificate chain. Setting ok = 1 does this. + * After X509_verify_cert() is done, we verify that there were + * no actual errors, even if the returned value was positive. + */ + switch (cert_error) { + case X509_V_ERR_NO_EXPLICIT_POLICY: + policies_print(ctx); + /* fall through */ + case X509_V_ERR_CERT_HAS_EXPIRED: + /* Continue even if the leaf is a self-signed cert */ + case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT: + /* Continue after extension errors too */ + case X509_V_ERR_INVALID_CA: + case X509_V_ERR_INVALID_NON_CA: + case X509_V_ERR_PATH_LENGTH_EXCEEDED: + case X509_V_ERR_CRL_HAS_EXPIRED: + case X509_V_ERR_CRL_NOT_YET_VALID: + case X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION: + /* errors due to strict conformance checking (-x509_strict) */ + case X509_V_ERR_INVALID_PURPOSE: + case X509_V_ERR_PATHLEN_INVALID_FOR_NON_CA: + case X509_V_ERR_PATHLEN_WITHOUT_KU_KEY_CERT_SIGN: + case X509_V_ERR_CA_BCONS_NOT_CRITICAL: + case X509_V_ERR_CA_CERT_MISSING_KEY_USAGE: + case X509_V_ERR_KU_KEY_CERT_SIGN_INVALID_FOR_NON_CA: + case X509_V_ERR_ISSUER_NAME_EMPTY: + case X509_V_ERR_SUBJECT_NAME_EMPTY: + case X509_V_ERR_EMPTY_SUBJECT_SAN_NOT_CRITICAL: + case X509_V_ERR_EMPTY_SUBJECT_ALT_NAME: + case X509_V_ERR_SIGNATURE_ALGORITHM_INCONSISTENCY: + case X509_V_ERR_AUTHORITY_KEY_IDENTIFIER_CRITICAL: + case X509_V_ERR_SUBJECT_KEY_IDENTIFIER_CRITICAL: + case X509_V_ERR_MISSING_AUTHORITY_KEY_IDENTIFIER: + case X509_V_ERR_MISSING_SUBJECT_KEY_IDENTIFIER: + case X509_V_ERR_EXTENSIONS_REQUIRE_VERSION_3: + ok = 1; + } + return ok; + } + if (cert_error == X509_V_OK && ok == 2) + policies_print(ctx); + if (!v_verbose) + ERR_clear_error(); + return ok; +}