[thirdparty/openssl.git] / apps / verify.c

/*
 * Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved.
 *
 * 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "apps.h"
#include "progs.h"
#include <openssl/bio.h>
#include <openssl/err.h>
#include <openssl/x509.h>
#include <openssl/x509v3.h>
#include <openssl/pem.h>

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));

        /*
         * 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;
}
Commit	Line	Data
846e33c7	1	/*
fecb3aae	2	* Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved.
d02b48c6	3	*
dffa7520	4	* Licensed under the Apache License 2.0 (the "License"). You may not use
846e33c7 RS	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
d02b48c6 RE	8	*/
	9
	10	#include <stdio.h>
	11	#include <stdlib.h>
	12	#include <string.h>
	13	#include "apps.h"
dab2cd68	14	#include "progs.h"
ec577822 BM	15	#include <openssl/bio.h>
	16	#include <openssl/err.h>
	17	#include <openssl/x509.h>
d4cec6a1	18	#include <openssl/x509v3.h>
ec577822	19	#include <openssl/pem.h>
d02b48c6	20
6d23cf97	21	static int cb(int ok, X509_STORE_CTX *ctx);
cc696296	22	static int check(X509_STORE ctx, const char file,
0f113f3e	23	STACK_OF(X509) uchain, STACK_OF(X509) tchain,
8267becb	24	STACK_OF(X509_CRL) *crls, int show_chain,
2292c8e1	25	STACK_OF(OPENSSL_STRING) *opts);
0f113f3e	26	static int v_verbose = 0, vflags = 0;
d02b48c6	27
7e1b7485	28	typedef enum OPTION_choice {
b0f96018	29	OPT_COMMON,
fd3397fc RL	30	OPT_ENGINE, OPT_CAPATH, OPT_CAFILE, OPT_CASTORE,
fd3397fc RL	31	OPT_NOCAPATH, OPT_NOCAFILE, OPT_NOCASTORE,
2b6bcb70	32	OPT_UNTRUSTED, OPT_TRUSTED, OPT_CRLFILE, OPT_CRL_DOWNLOAD, OPT_SHOW_CHAIN,
2292c8e1 RL	33	OPT_V_ENUM, OPT_NAMEOPT, OPT_VFYOPT,
2292c8e1 RL	34	OPT_VERBOSE,
6bd4e3f2	35	OPT_PROV_ENUM
7e1b7485 RS	36	} OPTION_CHOICE;
7e1b7485 RS	37
44c83ebd	38	const OPTIONS verify_options[] = {
92de469f	39	{OPT_HELP_STR, 1, '-', "Usage: %s [options] [cert...]\n"},
5388f986 RS	40
5388f986 RS	41	OPT_SECTION("General"),
7e1b7485	42	{"help", OPT_HELP, '-', "Display this summary"},
5388f986 RS	43	#ifndef OPENSSL_NO_ENGINE
	44	{"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
	45	#endif
a64ba70d MC	46	{"verbose", OPT_VERBOSE, '-',
a64ba70d MC	47	"Print extra information about the operations being performed."},
2b264aee	48	{"nameopt", OPT_NAMEOPT, 's', "Certificate subject/issuer name printing options"},
5388f986 RS	49
5388f986 RS	50	OPT_SECTION("Certificate chain"),
2b264aee	51	{"trusted", OPT_TRUSTED, '<', "A file of trusted certificates"},
a64ba70d	52	{"CAfile", OPT_CAFILE, '<', "A file of trusted certificates"},
2b264aee	53	{"CApath", OPT_CAPATH, '/', "A directory of files with trusted certificates"},
fd3397fc	54	{"CAstore", OPT_CASTORE, ':', "URI to a store of trusted certificates"},
2b6bcb70	55	{"no-CAfile", OPT_NOCAFILE, '-',
2b264aee	56	"Do not load the default trusted certificates file"},
2b6bcb70	57	{"no-CApath", OPT_NOCAPATH, '-',
2b264aee	58	"Do not load trusted certificates from the default directory"},
00493490	59	{"no-CAstore", OPT_NOCASTORE, '-',
2b264aee	60	"Do not load trusted certificates from the default certificates store"},
a64ba70d	61	{"untrusted", OPT_UNTRUSTED, '<', "A file of untrusted certificates"},
a64ba70d MC	62	{"CRLfile", OPT_CRLFILE, '<',
	63	"File containing one or more CRL's (in PEM format) to load"},
	64	{"crl_download", OPT_CRL_DOWNLOAD, '-',
2b264aee	65	"Try downloading CRL information for certificates via their CDP entries"},
a64ba70d MC	66	{"show_chain", OPT_SHOW_CHAIN, '-',
a64ba70d MC	67	"Display information about the certificate chain"},
5388f986	68
9c3bcfa0	69	OPT_V_OPTIONS,
2292c8e1	70	{"vfyopt", OPT_VFYOPT, 's', "Verification parameter in n:v form"},
92de469f	71
6bd4e3f2 P	72	OPT_PROV_OPTIONS,
6bd4e3f2 P	73
92de469f RS	74	OPT_PARAMETERS(),
92de469f RS	75	{"cert", 0, 0, "Certificate(s) to verify (optional; stdin used otherwise)"},
7e1b7485 RS	76	{NULL}
7e1b7485 RS	77	};
667ac4ec	78
7e1b7485	79	int verify_main(int argc, char **argv)
0f113f3e	80	{
dd1abd44	81	ENGINE *e = NULL;
0f113f3e MC	82	STACK_OF(X509) untrusted = NULL, trusted = NULL;
0f113f3e MC	83	STACK_OF(X509_CRL) *crls = NULL;
2292c8e1	84	STACK_OF(OPENSSL_STRING) *vfyopts = NULL;
7e1b7485	85	X509_STORE *store = NULL;
0f113f3e	86	X509_VERIFY_PARAM *vpm = NULL;
fd3397fc RL	87	const char prog, CApath = NULL, CAfile = NULL, CAstore = NULL;
fd3397fc RL	88	int noCApath = 0, noCAfile = 0, noCAstore = 0;
7e1b7485 RS	89	int vpmtouched = 0, crl_download = 0, show_chain = 0, i = 0, ret = 1;
7e1b7485 RS	90	OPTION_CHOICE o;
d02b48c6	91
7e1b7485	92	if ((vpm = X509_VERIFY_PARAM_new()) == NULL)
0f113f3e	93	goto end;
0f113f3e	94
7e1b7485 RS	95	prog = opt_init(argc, argv, verify_options);
	96	while ((o = opt_next()) != OPT_EOF) {
	97	switch (o) {
	98	case OPT_EOF:
	99	case OPT_ERR:
2292c8e1	100	opthelp:
7e1b7485 RS	101	BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
	102	goto end;
	103	case OPT_HELP:
	104	opt_help(verify_options);
92de469f	105	BIO_printf(bio_err, "\nRecognized certificate chain purposes:\n");
7e1b7485	106	for (i = 0; i < X509_PURPOSE_get_count(); i++) {
92de469f RS	107	X509_PURPOSE *ptmp = X509_PURPOSE_get0(i);
	108
	109	BIO_printf(bio_err, " %-15s %s\n",
7e1b7485 RS	110	X509_PURPOSE_get0_sname(ptmp),
	111	X509_PURPOSE_get0_name(ptmp));
	112	}
0f113f3e	113
92de469f	114	BIO_printf(bio_err, "Recognized certificate policy names:\n");
7e1b7485	115	for (i = 0; i < X509_VERIFY_PARAM_get_count(); i++) {
92de469f RS	116	const X509_VERIFY_PARAM *vptmp = X509_VERIFY_PARAM_get0(i);
	117
	118	BIO_printf(bio_err, " %s\n",
7e1b7485	119	X509_VERIFY_PARAM_get0_name(vptmp));
0f113f3e	120	}
7e1b7485 RS	121	ret = 0;
	122	goto end;
	123	case OPT_V_CASES:
	124	if (!opt_verify(o, vpm))
0f113f3e	125	goto end;
7e1b7485 RS	126	vpmtouched++;
	127	break;
	128	case OPT_CAPATH:
	129	CApath = opt_arg();
	130	break;
	131	case OPT_CAFILE:
	132	CAfile = opt_arg();
	133	break;
fd3397fc RL	134	case OPT_CASTORE:
	135	CAstore = opt_arg();
	136	break;
2b6bcb70 MC	137	case OPT_NOCAPATH:
	138	noCApath = 1;
	139	break;
	140	case OPT_NOCAFILE:
	141	noCAfile = 1;
	142	break;
fd3397fc RL	143	case OPT_NOCASTORE:
	144	noCAstore = 1;
	145	break;
7e1b7485	146	case OPT_UNTRUSTED:
feb2f53e	147	/* Zero or more times */
ea51096e	148	if (!load_certs(opt_arg(), 0, &untrusted, NULL,
feb2f53e VD	149	"untrusted certificates"))
feb2f53e VD	150	goto end;
7e1b7485 RS	151	break;
7e1b7485 RS	152	case OPT_TRUSTED:
feb2f53e VD	153	/* Zero or more times */
	154	noCAfile = 1;
	155	noCApath = 1;
fd3397fc	156	noCAstore = 1;
ea51096e	157	if (!load_certs(opt_arg(), 0, &trusted, NULL, "trusted certificates"))
feb2f53e	158	goto end;
7e1b7485 RS	159	break;
7e1b7485 RS	160	case OPT_CRLFILE:
feb2f53e	161	/* Zero or more times */
b3c5aadf	162	if (!load_crls(opt_arg(), &crls, NULL, "other CRLs"))
feb2f53e	163	goto end;
7e1b7485 RS	164	break;
	165	case OPT_CRL_DOWNLOAD:
	166	crl_download = 1;
0f113f3e	167	break;
a773b52a	168	case OPT_ENGINE:
dd1abd44	169	if ((e = setup_engine(opt_arg(), 0)) == NULL) {
a773b52a RS	170	/* Failure message already displayed */
	171	goto end;
	172	}
	173	break;
7e1b7485 RS	174	case OPT_SHOW_CHAIN:
	175	show_chain = 1;
	176	break;
ad39b31c	177	case OPT_NAMEOPT:
b5c4209b	178	if (!set_nameopt(opt_arg()))
ad39b31c DB	179	goto end;
ad39b31c DB	180	break;
2292c8e1 RL	181	case OPT_VFYOPT:
	182	if (!vfyopts)
	183	vfyopts = sk_OPENSSL_STRING_new_null();
	184	if (!vfyopts \|\| !sk_OPENSSL_STRING_push(vfyopts, opt_arg()))
	185	goto opthelp;
	186	break;
7e1b7485 RS	187	case OPT_VERBOSE:
	188	v_verbose = 1;
	189	break;
6bd4e3f2 P	190	case OPT_PROV_CASES:
	191	if (!opt_provider(o))
	192	goto end;
	193	break;
7e1b7485	194	}
0f113f3e	195	}
021410ea RS	196
021410ea RS	197	/* Extra arguments are certificates to verify. */
7e1b7485 RS	198	argc = opt_num_rest();
7e1b7485 RS	199	argv = opt_rest();
021410ea	200
fd3397fc RL	201	if (trusted != NULL
fd3397fc RL	202	&& (CAfile != NULL \|\| CApath != NULL \|\| CAstore != NULL)) {
5b89036c	203	BIO_printf(bio_err,
fd3397fc	204	"%s: Cannot use -trusted with -CAfile, -CApath or -CAstore\n",
5b89036c RS	205	prog);
	206	goto end;
	207	}
d02b48c6	208
fd3397fc RL	209	if ((store = setup_verify(CAfile, noCAfile, CApath, noCApath,
fd3397fc RL	210	CAstore, noCAstore)) == NULL)
7e1b7485 RS	211	goto end;
7e1b7485 RS	212	X509_STORE_set_verify_cb(store, cb);
5270e702	213
7e1b7485 RS	214	if (vpmtouched)
7e1b7485 RS	215	X509_STORE_set1_param(store, vpm);
0f113f3e MC	216
	217	ERR_clear_error();
	218
0f113f3e	219	if (crl_download)
7e1b7485	220	store_setup_crl_download(store);
0f113f3e MC	221
	222	ret = 0;
	223	if (argc < 1) {
8267becb	224	if (check(store, NULL, untrusted, trusted, crls, show_chain,
2292c8e1	225	vfyopts) != 1)
0f113f3e MC	226	ret = -1;
	227	} else {
	228	for (i = 0; i < argc; i++)
2292c8e1 RL	229	if (check(store, argv[i], untrusted, trusted, crls, show_chain,
2292c8e1 RL	230	vfyopts) != 1)
0f113f3e MC	231	ret = -1;
	232	}
	233
	234	end:
222561fe RS	235	X509_VERIFY_PARAM_free(vpm);
222561fe RS	236	X509_STORE_free(store);
79b2a2f2 DDO	237	OSSL_STACK_OF_X509_free(untrusted);
79b2a2f2 DDO	238	OSSL_STACK_OF_X509_free(trusted);
0f113f3e	239	sk_X509_CRL_pop_free(crls, X509_CRL_free);
2292c8e1	240	sk_OPENSSL_STRING_free(vfyopts);
dd1abd44	241	release_engine(e);
7e1b7485	242	return (ret < 0 ? 2 : ret);
0f113f3e	243	}
d02b48c6	244
cc696296	245	static int check(X509_STORE ctx, const char file,
0f113f3e	246	STACK_OF(X509) uchain, STACK_OF(X509) tchain,
8267becb	247	STACK_OF(X509_CRL) *crls, int show_chain,
2292c8e1	248	STACK_OF(OPENSSL_STRING) *opts)
0f113f3e MC	249	{
	250	X509 *x = NULL;
	251	int i = 0, ret = 0;
	252	X509_STORE_CTX *csc;
	253	STACK_OF(X509) *chain = NULL;
7f3f41d8	254	int num_untrusted;
0f113f3e	255
d382e796	256	x = load_cert(file, FORMAT_UNDEF, "certificate file");
0f113f3e MC	257	if (x == NULL)
0f113f3e MC	258	goto end;
0f113f3e	259
2292c8e1 RL	260	if (opts != NULL) {
	261	for (i = 0; i < sk_OPENSSL_STRING_num(opts); i++) {
	262	char *opt = sk_OPENSSL_STRING_value(opts, i);
	263	if (x509_ctrl_string(x, opt) <= 0) {
	264	BIO_printf(bio_err, "parameter error \"%s\"\n", opt);
	265	ERR_print_errors(bio_err);
10481d33	266	X509_free(x);
2292c8e1 RL	267	return 0;
2292c8e1 RL	268	}
ccf45361	269	}
8267becb	270	}
8267becb	271
0f113f3e MC	272	csc = X509_STORE_CTX_new();
0f113f3e MC	273	if (csc == NULL) {
ccf45361 PY	274	BIO_printf(bio_err, "error %s: X.509 store context allocation failed\n",
ccf45361 PY	275	(file == NULL) ? "stdin" : file);
0f113f3e MC	276	goto end;
0f113f3e MC	277	}
a392ef20	278
0f113f3e MC	279	X509_STORE_set_flags(ctx, vflags);
0f113f3e MC	280	if (!X509_STORE_CTX_init(csc, ctx, x, uchain)) {
aebd0e5c	281	X509_STORE_CTX_free(csc);
ccf45361 PY	282	BIO_printf(bio_err,
	283	"error %s: X.509 store context initialization failed\n",
	284	(file == NULL) ? "stdin" : file);
0f113f3e MC	285	goto end;
0f113f3e MC	286	}
2234212c	287	if (tchain != NULL)
f0e0fd51	288	X509_STORE_CTX_set0_trusted_stack(csc, tchain);
2234212c	289	if (crls != NULL)
0f113f3e MC	290	X509_STORE_CTX_set0_crls(csc, crls);
0f113f3e MC	291	i = X509_verify_cert(csc);
d9e309a6	292	if (i > 0 && X509_STORE_CTX_get_error(csc) == X509_V_OK) {
ccf45361	293	BIO_printf(bio_out, "%s: OK\n", (file == NULL) ? "stdin" : file);
480405e4	294	ret = 1;
63c6aa6b VD	295	if (show_chain) {
63c6aa6b VD	296	int j;
bb484020	297
63c6aa6b VD	298	chain = X509_STORE_CTX_get1_chain(csc);
63c6aa6b VD	299	num_untrusted = X509_STORE_CTX_get_num_untrusted(csc);
ccf45361	300	BIO_printf(bio_out, "Chain:\n");
63c6aa6b VD	301	for (j = 0; j < sk_X509_num(chain); j++) {
63c6aa6b VD	302	X509 *cert = sk_X509_value(chain, j);
ccf45361	303	BIO_printf(bio_out, "depth=%d: ", j);
63c6aa6b VD	304	X509_NAME_print_ex_fp(stdout,
63c6aa6b VD	305	X509_get_subject_name(cert),
b5c4209b	306	0, get_nameopt());
63c6aa6b	307	if (j < num_untrusted)
ccf45361 PY	308	BIO_printf(bio_out, " (untrusted)");
ccf45361 PY	309	BIO_printf(bio_out, "\n");
63c6aa6b	310	}
79b2a2f2	311	OSSL_STACK_OF_X509_free(chain);
63c6aa6b VD	312	}
63c6aa6b VD	313	} else {
ccf45361 PY	314	BIO_printf(bio_err,
	315	"error %s: verification failed\n",
	316	(file == NULL) ? "stdin" : file);
7f3f41d8	317	}
0f113f3e MC	318	X509_STORE_CTX_free(csc);
0f113f3e MC	319
0f113f3e	320	end:
480405e4	321	if (i <= 0)
63c6aa6b	322	ERR_print_errors(bio_err);
222561fe	323	X509_free(x);
0f113f3e	324
480405e4	325	return ret;
0f113f3e	326	}
d02b48c6	327
6d23cf97	328	static int cb(int ok, X509_STORE_CTX *ctx)
0f113f3e MC	329	{
	330	int cert_error = X509_STORE_CTX_get_error(ctx);
	331	X509 *current_cert = X509_STORE_CTX_get_current_cert(ctx);
	332
	333	if (!ok) {
2234212c	334	if (current_cert != NULL) {
ecf3a1fb RS	335	X509_NAME_print_ex(bio_err,
ecf3a1fb RS	336	X509_get_subject_name(current_cert),
b5c4209b	337	0, get_nameopt());
ecf3a1fb	338	BIO_printf(bio_err, "\n");
0f113f3e	339	}
63c6aa6b VD	340	BIO_printf(bio_err, "%serror %d at %d depth lookup: %s\n",
63c6aa6b VD	341	X509_STORE_CTX_get0_parent_ctx(ctx) ? "[CRL path] " : "",
0f113f3e MC	342	cert_error,
	343	X509_STORE_CTX_get_error_depth(ctx),
	344	X509_verify_cert_error_string(cert_error));
9b10986d RL	345
	346	/*
	347	* Pretend that some errors are ok, so they don't stop further
	348	* processing of the certificate chain. Setting ok = 1 does this.
	349	* After X509_verify_cert() is done, we verify that there were
	350	* no actual errors, even if the returned value was positive.
	351	*/
0f113f3e MC	352	switch (cert_error) {
0f113f3e MC	353	case X509_V_ERR_NO_EXPLICIT_POLICY:
ecf3a1fb	354	policies_print(ctx);
9929c817	355	/* fall through */
0f113f3e	356	case X509_V_ERR_CERT_HAS_EXPIRED:
ade08735	357	/* Continue even if the leaf is a self-signed cert */
0f113f3e MC	358	case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
	359	/* Continue after extension errors too */
	360	case X509_V_ERR_INVALID_CA:
	361	case X509_V_ERR_INVALID_NON_CA:
	362	case X509_V_ERR_PATH_LENGTH_EXCEEDED:
0f113f3e MC	363	case X509_V_ERR_CRL_HAS_EXPIRED:
	364	case X509_V_ERR_CRL_NOT_YET_VALID:
	365	case X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION:
f974b610 DDO	366	/* errors due to strict conformance checking (-x509_strict) */
	367	case X509_V_ERR_INVALID_PURPOSE:
	368	case X509_V_ERR_PATHLEN_INVALID_FOR_NON_CA:
	369	case X509_V_ERR_PATHLEN_WITHOUT_KU_KEY_CERT_SIGN:
	370	case X509_V_ERR_CA_BCONS_NOT_CRITICAL:
	371	case X509_V_ERR_CA_CERT_MISSING_KEY_USAGE:
	372	case X509_V_ERR_KU_KEY_CERT_SIGN_INVALID_FOR_NON_CA:
	373	case X509_V_ERR_ISSUER_NAME_EMPTY:
	374	case X509_V_ERR_SUBJECT_NAME_EMPTY:
	375	case X509_V_ERR_EMPTY_SUBJECT_SAN_NOT_CRITICAL:
	376	case X509_V_ERR_EMPTY_SUBJECT_ALT_NAME:
	377	case X509_V_ERR_SIGNATURE_ALGORITHM_INCONSISTENCY:
	378	case X509_V_ERR_AUTHORITY_KEY_IDENTIFIER_CRITICAL:
	379	case X509_V_ERR_SUBJECT_KEY_IDENTIFIER_CRITICAL:
	380	case X509_V_ERR_MISSING_AUTHORITY_KEY_IDENTIFIER:
	381	case X509_V_ERR_MISSING_SUBJECT_KEY_IDENTIFIER:
	382	case X509_V_ERR_EXTENSIONS_REQUIRE_VERSION_3:
0f113f3e	383	ok = 1;
0f113f3e	384	}
0f113f3e MC	385	return ok;
	386
	387	}
	388	if (cert_error == X509_V_OK && ok == 2)
ecf3a1fb	389	policies_print(ctx);
0f113f3e MC	390	if (!v_verbose)
0f113f3e MC	391	ERR_clear_error();
26a7d938	392	return ok;
0f113f3e	393	}