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

/*
 * Copyright 1995-2020 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>

DEFINE_STACK_OF_STRING()

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_ERR = -1, OPT_EOF = 0, OPT_HELP,
    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(), &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(), &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;
        }
    }
    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);
    sk_X509_pop_free(untrusted, X509_free);
    sk_X509_pop_free(trusted, X509_free);
    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);
                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");
            }
            sk_X509_pop_free(chain, X509_free);
        }
    } 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 thru */
        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_INVALID_PURPOSE:
        case X509_V_ERR_CRL_HAS_EXPIRED:
        case X509_V_ERR_CRL_NOT_YET_VALID:
        case X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION:
            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	/*
33388b44	2	* Copyright 1995-2020 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
852c2ed2 RS	21	DEFINE_STACK_OF_STRING()
852c2ed2 RS	22
6d23cf97	23	static int cb(int ok, X509_STORE_CTX *ctx);
cc696296	24	static int check(X509_STORE ctx, const char file,
0f113f3e	25	STACK_OF(X509) uchain, STACK_OF(X509) tchain,
8267becb	26	STACK_OF(X509_CRL) *crls, int show_chain,
2292c8e1	27	STACK_OF(OPENSSL_STRING) *opts);
0f113f3e	28	static int v_verbose = 0, vflags = 0;
d02b48c6	29
7e1b7485 RS	30	typedef enum OPTION_choice {
7e1b7485 RS	31	OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
fd3397fc RL	32	OPT_ENGINE, OPT_CAPATH, OPT_CAFILE, OPT_CASTORE,
fd3397fc RL	33	OPT_NOCAPATH, OPT_NOCAFILE, OPT_NOCASTORE,
2b6bcb70	34	OPT_UNTRUSTED, OPT_TRUSTED, OPT_CRLFILE, OPT_CRL_DOWNLOAD, OPT_SHOW_CHAIN,
2292c8e1 RL	35	OPT_V_ENUM, OPT_NAMEOPT, OPT_VFYOPT,
2292c8e1 RL	36	OPT_VERBOSE,
6bd4e3f2	37	OPT_PROV_ENUM
7e1b7485 RS	38	} OPTION_CHOICE;
7e1b7485 RS	39
44c83ebd	40	const OPTIONS verify_options[] = {
92de469f	41	{OPT_HELP_STR, 1, '-', "Usage: %s [options] [cert...]\n"},
5388f986 RS	42
5388f986 RS	43	OPT_SECTION("General"),
7e1b7485	44	{"help", OPT_HELP, '-', "Display this summary"},
5388f986 RS	45	#ifndef OPENSSL_NO_ENGINE
	46	{"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
	47	#endif
a64ba70d MC	48	{"verbose", OPT_VERBOSE, '-',
a64ba70d MC	49	"Print extra information about the operations being performed."},
2b264aee	50	{"nameopt", OPT_NAMEOPT, 's', "Certificate subject/issuer name printing options"},
5388f986 RS	51
5388f986 RS	52	OPT_SECTION("Certificate chain"),
2b264aee	53	{"trusted", OPT_TRUSTED, '<', "A file of trusted certificates"},
a64ba70d	54	{"CAfile", OPT_CAFILE, '<', "A file of trusted certificates"},
2b264aee	55	{"CApath", OPT_CAPATH, '/', "A directory of files with trusted certificates"},
fd3397fc	56	{"CAstore", OPT_CASTORE, ':', "URI to a store of trusted certificates"},
2b6bcb70	57	{"no-CAfile", OPT_NOCAFILE, '-',
2b264aee	58	"Do not load the default trusted certificates file"},
2b6bcb70	59	{"no-CApath", OPT_NOCAPATH, '-',
2b264aee	60	"Do not load trusted certificates from the default directory"},
00493490	61	{"no-CAstore", OPT_NOCASTORE, '-',
2b264aee	62	"Do not load trusted certificates from the default certificates store"},
a64ba70d	63	{"untrusted", OPT_UNTRUSTED, '<', "A file of untrusted certificates"},
a64ba70d MC	64	{"CRLfile", OPT_CRLFILE, '<',
	65	"File containing one or more CRL's (in PEM format) to load"},
	66	{"crl_download", OPT_CRL_DOWNLOAD, '-',
2b264aee	67	"Try downloading CRL information for certificates via their CDP entries"},
a64ba70d MC	68	{"show_chain", OPT_SHOW_CHAIN, '-',
a64ba70d MC	69	"Display information about the certificate chain"},
5388f986	70
9c3bcfa0	71	OPT_V_OPTIONS,
2292c8e1	72	{"vfyopt", OPT_VFYOPT, 's', "Verification parameter in n:v form"},
92de469f	73
6bd4e3f2 P	74	OPT_PROV_OPTIONS,
6bd4e3f2 P	75
92de469f RS	76	OPT_PARAMETERS(),
92de469f RS	77	{"cert", 0, 0, "Certificate(s) to verify (optional; stdin used otherwise)"},
7e1b7485 RS	78	{NULL}
7e1b7485 RS	79	};
667ac4ec	80
7e1b7485	81	int verify_main(int argc, char **argv)
0f113f3e	82	{
dd1abd44	83	ENGINE *e = NULL;
0f113f3e MC	84	STACK_OF(X509) untrusted = NULL, trusted = NULL;
0f113f3e MC	85	STACK_OF(X509_CRL) *crls = NULL;
2292c8e1	86	STACK_OF(OPENSSL_STRING) *vfyopts = NULL;
7e1b7485	87	X509_STORE *store = NULL;
0f113f3e	88	X509_VERIFY_PARAM *vpm = NULL;
fd3397fc RL	89	const char prog, CApath = NULL, CAfile = NULL, CAstore = NULL;
fd3397fc RL	90	int noCApath = 0, noCAfile = 0, noCAstore = 0;
7e1b7485 RS	91	int vpmtouched = 0, crl_download = 0, show_chain = 0, i = 0, ret = 1;
7e1b7485 RS	92	OPTION_CHOICE o;
d02b48c6	93
7e1b7485	94	if ((vpm = X509_VERIFY_PARAM_new()) == NULL)
0f113f3e	95	goto end;
0f113f3e	96
7e1b7485 RS	97	prog = opt_init(argc, argv, verify_options);
	98	while ((o = opt_next()) != OPT_EOF) {
	99	switch (o) {
	100	case OPT_EOF:
	101	case OPT_ERR:
2292c8e1	102	opthelp:
7e1b7485 RS	103	BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
	104	goto end;
	105	case OPT_HELP:
	106	opt_help(verify_options);
92de469f	107	BIO_printf(bio_err, "\nRecognized certificate chain purposes:\n");
7e1b7485	108	for (i = 0; i < X509_PURPOSE_get_count(); i++) {
92de469f RS	109	X509_PURPOSE *ptmp = X509_PURPOSE_get0(i);
	110
	111	BIO_printf(bio_err, " %-15s %s\n",
7e1b7485 RS	112	X509_PURPOSE_get0_sname(ptmp),
	113	X509_PURPOSE_get0_name(ptmp));
	114	}
0f113f3e	115
92de469f	116	BIO_printf(bio_err, "Recognized certificate policy names:\n");
7e1b7485	117	for (i = 0; i < X509_VERIFY_PARAM_get_count(); i++) {
92de469f RS	118	const X509_VERIFY_PARAM *vptmp = X509_VERIFY_PARAM_get0(i);
	119
	120	BIO_printf(bio_err, " %s\n",
7e1b7485	121	X509_VERIFY_PARAM_get0_name(vptmp));
0f113f3e	122	}
7e1b7485 RS	123	ret = 0;
	124	goto end;
	125	case OPT_V_CASES:
	126	if (!opt_verify(o, vpm))
0f113f3e	127	goto end;
7e1b7485 RS	128	vpmtouched++;
	129	break;
	130	case OPT_CAPATH:
	131	CApath = opt_arg();
	132	break;
	133	case OPT_CAFILE:
	134	CAfile = opt_arg();
	135	break;
fd3397fc RL	136	case OPT_CASTORE:
	137	CAstore = opt_arg();
	138	break;
2b6bcb70 MC	139	case OPT_NOCAPATH:
	140	noCApath = 1;
	141	break;
	142	case OPT_NOCAFILE:
	143	noCAfile = 1;
	144	break;
fd3397fc RL	145	case OPT_NOCASTORE:
	146	noCAstore = 1;
	147	break;
7e1b7485	148	case OPT_UNTRUSTED:
feb2f53e	149	/* Zero or more times */
b3c5aadf	150	if (!load_certs(opt_arg(), &untrusted, NULL,
feb2f53e VD	151	"untrusted certificates"))
feb2f53e VD	152	goto end;
7e1b7485 RS	153	break;
7e1b7485 RS	154	case OPT_TRUSTED:
feb2f53e VD	155	/* Zero or more times */
	156	noCAfile = 1;
	157	noCApath = 1;
fd3397fc	158	noCAstore = 1;
b3c5aadf	159	if (!load_certs(opt_arg(), &trusted, NULL, "trusted certificates"))
feb2f53e	160	goto end;
7e1b7485 RS	161	break;
7e1b7485 RS	162	case OPT_CRLFILE:
feb2f53e	163	/* Zero or more times */
b3c5aadf	164	if (!load_crls(opt_arg(), &crls, NULL, "other CRLs"))
feb2f53e	165	goto end;
7e1b7485 RS	166	break;
	167	case OPT_CRL_DOWNLOAD:
	168	crl_download = 1;
0f113f3e	169	break;
a773b52a	170	case OPT_ENGINE:
dd1abd44	171	if ((e = setup_engine(opt_arg(), 0)) == NULL) {
a773b52a RS	172	/* Failure message already displayed */
	173	goto end;
	174	}
	175	break;
7e1b7485 RS	176	case OPT_SHOW_CHAIN:
	177	show_chain = 1;
	178	break;
ad39b31c	179	case OPT_NAMEOPT:
b5c4209b	180	if (!set_nameopt(opt_arg()))
ad39b31c DB	181	goto end;
ad39b31c DB	182	break;
2292c8e1 RL	183	case OPT_VFYOPT:
	184	if (!vfyopts)
	185	vfyopts = sk_OPENSSL_STRING_new_null();
	186	if (!vfyopts \|\| !sk_OPENSSL_STRING_push(vfyopts, opt_arg()))
	187	goto opthelp;
	188	break;
7e1b7485 RS	189	case OPT_VERBOSE:
	190	v_verbose = 1;
	191	break;
6bd4e3f2 P	192	case OPT_PROV_CASES:
	193	if (!opt_provider(o))
	194	goto end;
	195	break;
7e1b7485	196	}
0f113f3e	197	}
7e1b7485 RS	198	argc = opt_num_rest();
7e1b7485 RS	199	argv = opt_rest();
fd3397fc RL	200	if (trusted != NULL
fd3397fc RL	201	&& (CAfile != NULL \|\| CApath != NULL \|\| CAstore != NULL)) {
5b89036c	202	BIO_printf(bio_err,
fd3397fc	203	"%s: Cannot use -trusted with -CAfile, -CApath or -CAstore\n",
5b89036c RS	204	prog);
	205	goto end;
	206	}
d02b48c6	207
fd3397fc RL	208	if ((store = setup_verify(CAfile, noCAfile, CApath, noCApath,
fd3397fc RL	209	CAstore, noCAstore)) == NULL)
7e1b7485 RS	210	goto end;
7e1b7485 RS	211	X509_STORE_set_verify_cb(store, cb);
5270e702	212
7e1b7485 RS	213	if (vpmtouched)
7e1b7485 RS	214	X509_STORE_set1_param(store, vpm);
0f113f3e MC	215
	216	ERR_clear_error();
	217
0f113f3e	218	if (crl_download)
7e1b7485	219	store_setup_crl_download(store);
0f113f3e MC	220
	221	ret = 0;
	222	if (argc < 1) {
8267becb	223	if (check(store, NULL, untrusted, trusted, crls, show_chain,
2292c8e1	224	vfyopts) != 1)
0f113f3e MC	225	ret = -1;
	226	} else {
	227	for (i = 0; i < argc; i++)
2292c8e1 RL	228	if (check(store, argv[i], untrusted, trusted, crls, show_chain,
2292c8e1 RL	229	vfyopts) != 1)
0f113f3e MC	230	ret = -1;
	231	}
	232
	233	end:
222561fe RS	234	X509_VERIFY_PARAM_free(vpm);
222561fe RS	235	X509_STORE_free(store);
0f113f3e MC	236	sk_X509_pop_free(untrusted, X509_free);
	237	sk_X509_pop_free(trusted, X509_free);
	238	sk_X509_CRL_pop_free(crls, X509_CRL_free);
2292c8e1	239	sk_OPENSSL_STRING_free(vfyopts);
dd1abd44	240	release_engine(e);
7e1b7485	241	return (ret < 0 ? 2 : ret);
0f113f3e	242	}
d02b48c6	243
cc696296	244	static int check(X509_STORE ctx, const char file,
0f113f3e	245	STACK_OF(X509) uchain, STACK_OF(X509) tchain,
8267becb	246	STACK_OF(X509_CRL) *crls, int show_chain,
2292c8e1	247	STACK_OF(OPENSSL_STRING) *opts)
0f113f3e MC	248	{
	249	X509 *x = NULL;
	250	int i = 0, ret = 0;
	251	X509_STORE_CTX *csc;
	252	STACK_OF(X509) *chain = NULL;
7f3f41d8	253	int num_untrusted;
0f113f3e	254
6d382c74	255	x = load_cert(file, FORMAT_UNDEF, "certificate file");
0f113f3e MC	256	if (x == NULL)
0f113f3e MC	257	goto end;
0f113f3e	258
2292c8e1 RL	259	if (opts != NULL) {
	260	for (i = 0; i < sk_OPENSSL_STRING_num(opts); i++) {
	261	char *opt = sk_OPENSSL_STRING_value(opts, i);
	262	if (x509_ctrl_string(x, opt) <= 0) {
	263	BIO_printf(bio_err, "parameter error \"%s\"\n", opt);
	264	ERR_print_errors(bio_err);
	265	return 0;
	266	}
ccf45361	267	}
8267becb	268	}
8267becb	269
0f113f3e MC	270	csc = X509_STORE_CTX_new();
0f113f3e MC	271	if (csc == NULL) {
ccf45361 PY	272	BIO_printf(bio_err, "error %s: X.509 store context allocation failed\n",
ccf45361 PY	273	(file == NULL) ? "stdin" : file);
0f113f3e MC	274	goto end;
0f113f3e MC	275	}
a392ef20	276
0f113f3e MC	277	X509_STORE_set_flags(ctx, vflags);
0f113f3e MC	278	if (!X509_STORE_CTX_init(csc, ctx, x, uchain)) {
aebd0e5c	279	X509_STORE_CTX_free(csc);
ccf45361 PY	280	BIO_printf(bio_err,
	281	"error %s: X.509 store context initialization failed\n",
	282	(file == NULL) ? "stdin" : file);
0f113f3e MC	283	goto end;
0f113f3e MC	284	}
2234212c	285	if (tchain != NULL)
f0e0fd51	286	X509_STORE_CTX_set0_trusted_stack(csc, tchain);
2234212c	287	if (crls != NULL)
0f113f3e MC	288	X509_STORE_CTX_set0_crls(csc, crls);
0f113f3e MC	289	i = X509_verify_cert(csc);
d9e309a6	290	if (i > 0 && X509_STORE_CTX_get_error(csc) == X509_V_OK) {
ccf45361	291	BIO_printf(bio_out, "%s: OK\n", (file == NULL) ? "stdin" : file);
480405e4	292	ret = 1;
63c6aa6b VD	293	if (show_chain) {
63c6aa6b VD	294	int j;
bb484020	295
63c6aa6b VD	296	chain = X509_STORE_CTX_get1_chain(csc);
63c6aa6b VD	297	num_untrusted = X509_STORE_CTX_get_num_untrusted(csc);
ccf45361	298	BIO_printf(bio_out, "Chain:\n");
63c6aa6b VD	299	for (j = 0; j < sk_X509_num(chain); j++) {
63c6aa6b VD	300	X509 *cert = sk_X509_value(chain, j);
ccf45361	301	BIO_printf(bio_out, "depth=%d: ", j);
63c6aa6b VD	302	X509_NAME_print_ex_fp(stdout,
63c6aa6b VD	303	X509_get_subject_name(cert),
b5c4209b	304	0, get_nameopt());
63c6aa6b	305	if (j < num_untrusted)
ccf45361 PY	306	BIO_printf(bio_out, " (untrusted)");
ccf45361 PY	307	BIO_printf(bio_out, "\n");
63c6aa6b VD	308	}
	309	sk_X509_pop_free(chain, X509_free);
	310	}
	311	} else {
ccf45361 PY	312	BIO_printf(bio_err,
	313	"error %s: verification failed\n",
	314	(file == NULL) ? "stdin" : file);
7f3f41d8	315	}
0f113f3e MC	316	X509_STORE_CTX_free(csc);
0f113f3e MC	317
0f113f3e	318	end:
480405e4	319	if (i <= 0)
63c6aa6b	320	ERR_print_errors(bio_err);
222561fe	321	X509_free(x);
0f113f3e	322
480405e4	323	return ret;
0f113f3e	324	}
d02b48c6	325
6d23cf97	326	static int cb(int ok, X509_STORE_CTX *ctx)
0f113f3e MC	327	{
	328	int cert_error = X509_STORE_CTX_get_error(ctx);
	329	X509 *current_cert = X509_STORE_CTX_get_current_cert(ctx);
	330
	331	if (!ok) {
2234212c	332	if (current_cert != NULL) {
ecf3a1fb RS	333	X509_NAME_print_ex(bio_err,
ecf3a1fb RS	334	X509_get_subject_name(current_cert),
b5c4209b	335	0, get_nameopt());
ecf3a1fb	336	BIO_printf(bio_err, "\n");
0f113f3e	337	}
63c6aa6b VD	338	BIO_printf(bio_err, "%serror %d at %d depth lookup: %s\n",
63c6aa6b VD	339	X509_STORE_CTX_get0_parent_ctx(ctx) ? "[CRL path] " : "",
0f113f3e MC	340	cert_error,
	341	X509_STORE_CTX_get_error_depth(ctx),
	342	X509_verify_cert_error_string(cert_error));
9b10986d RL	343
	344	/*
	345	* Pretend that some errors are ok, so they don't stop further
	346	* processing of the certificate chain. Setting ok = 1 does this.
	347	* After X509_verify_cert() is done, we verify that there were
	348	* no actual errors, even if the returned value was positive.
	349	*/
0f113f3e MC	350	switch (cert_error) {
0f113f3e MC	351	case X509_V_ERR_NO_EXPLICIT_POLICY:
ecf3a1fb	352	policies_print(ctx);
018fcbec	353	/* fall thru */
0f113f3e	354	case X509_V_ERR_CERT_HAS_EXPIRED:
ade08735	355	/* Continue even if the leaf is a self-signed cert */
0f113f3e MC	356	case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
	357	/* Continue after extension errors too */
	358	case X509_V_ERR_INVALID_CA:
	359	case X509_V_ERR_INVALID_NON_CA:
	360	case X509_V_ERR_PATH_LENGTH_EXCEEDED:
	361	case X509_V_ERR_INVALID_PURPOSE:
	362	case X509_V_ERR_CRL_HAS_EXPIRED:
	363	case X509_V_ERR_CRL_NOT_YET_VALID:
	364	case X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION:
	365	ok = 1;
0f113f3e MC	366	}
	367
	368	return ok;
	369
	370	}
	371	if (cert_error == X509_V_OK && ok == 2)
ecf3a1fb	372	policies_print(ctx);
0f113f3e MC	373	if (!v_verbose)
0f113f3e MC	374	ERR_clear_error();
26a7d938	375	return ok;
0f113f3e	376	}