| /* |
| * Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved. |
| * |
| * Licensed under the OpenSSL license (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); |
| 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_NOCAPATH, OPT_NOCAFILE, |
| OPT_UNTRUSTED, OPT_TRUSTED, OPT_CRLFILE, OPT_CRL_DOWNLOAD, OPT_SHOW_CHAIN, |
| OPT_V_ENUM, OPT_NAMEOPT, |
| OPT_VERBOSE |
| } OPTION_CHOICE; |
| |
| const OPTIONS verify_options[] = { |
| {OPT_HELP_STR, 1, '-', "Usage: %s [options] cert.pem...\n"}, |
| {OPT_HELP_STR, 1, '-', "Valid options are:\n"}, |
| {"help", OPT_HELP, '-', "Display this summary"}, |
| {"verbose", OPT_VERBOSE, '-', |
| "Print extra information about the operations being performed."}, |
| {"CApath", OPT_CAPATH, '/', "A directory of trusted certificates"}, |
| {"CAfile", OPT_CAFILE, '<', "A file of trusted certificates"}, |
| {"no-CAfile", OPT_NOCAFILE, '-', |
| "Do not load the default certificates file"}, |
| {"no-CApath", OPT_NOCAPATH, '-', |
| "Do not load certificates from the default certificates directory"}, |
| {"untrusted", OPT_UNTRUSTED, '<', "A file of untrusted certificates"}, |
| {"trusted", OPT_TRUSTED, '<', "A file of trusted certificates"}, |
| {"CRLfile", OPT_CRLFILE, '<', |
| "File containing one or more CRL's (in PEM format) to load"}, |
| {"crl_download", OPT_CRL_DOWNLOAD, '-', |
| "Attempt to download CRL information for this certificate"}, |
| {"show_chain", OPT_SHOW_CHAIN, '-', |
| "Display information about the certificate chain"}, |
| {"nameopt", OPT_NAMEOPT, 's', "Various certificate name options"}, |
| OPT_V_OPTIONS, |
| #ifndef OPENSSL_NO_ENGINE |
| {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"}, |
| #endif |
| {NULL} |
| }; |
| |
| int verify_main(int argc, char **argv) |
| { |
| ENGINE *e = NULL; |
| STACK_OF(X509) *untrusted = NULL, *trusted = NULL; |
| STACK_OF(X509_CRL) *crls = NULL; |
| X509_STORE *store = NULL; |
| X509_VERIFY_PARAM *vpm = NULL; |
| const char *prog, *CApath = NULL, *CAfile = NULL; |
| int noCApath = 0, noCAfile = 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: |
| BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); |
| goto end; |
| case OPT_HELP: |
| opt_help(verify_options); |
| 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)); |
| } |
| |
| BIO_printf(bio_err, "Recognized verify names:\n"); |
| for (i = 0; i < X509_VERIFY_PARAM_get_count(); i++) { |
| const X509_VERIFY_PARAM *vptmp; |
| vptmp = X509_VERIFY_PARAM_get0(i); |
| BIO_printf(bio_err, "\t%-10s\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_NOCAPATH: |
| noCApath = 1; |
| break; |
| case OPT_NOCAFILE: |
| noCAfile = 1; |
| break; |
| case OPT_UNTRUSTED: |
| /* Zero or more times */ |
| if (!load_certs(opt_arg(), &untrusted, FORMAT_PEM, NULL, |
| "untrusted certificates")) |
| goto end; |
| break; |
| case OPT_TRUSTED: |
| /* Zero or more times */ |
| noCAfile = 1; |
| noCApath = 1; |
| if (!load_certs(opt_arg(), &trusted, FORMAT_PEM, NULL, |
| "trusted certificates")) |
| goto end; |
| break; |
| case OPT_CRLFILE: |
| /* Zero or more times */ |
| if (!load_crls(opt_arg(), &crls, FORMAT_PEM, 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_VERBOSE: |
| v_verbose = 1; |
| break; |
| } |
| } |
| argc = opt_num_rest(); |
| argv = opt_rest(); |
| if (trusted != NULL && (CAfile || CApath)) { |
| BIO_printf(bio_err, |
| "%s: Cannot use -trusted with -CAfile or -CApath\n", |
| prog); |
| goto end; |
| } |
| |
| if ((store = setup_verify(CAfile, CApath, noCAfile, noCApath)) == 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) != 1) |
| ret = -1; |
| } else { |
| for (i = 0; i < argc; i++) |
| if (check(store, argv[i], untrusted, trusted, crls, |
| show_chain) != 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); |
| 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) |
| { |
| 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_PEM, "certificate file"); |
| if (x == NULL) |
| goto end; |
| |
| csc = X509_STORE_CTX_new(); |
| if (csc == NULL) { |
| printf("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); |
| printf("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) { |
| printf("%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); |
| printf("Chain:\n"); |
| for (j = 0; j < sk_X509_num(chain); j++) { |
| X509 *cert = sk_X509_value(chain, j); |
| printf("depth=%d: ", j); |
| X509_NAME_print_ex_fp(stdout, |
| X509_get_subject_name(cert), |
| 0, get_nameopt()); |
| if (j < num_untrusted) |
| printf(" (untrusted)"); |
| printf("\n"); |
| } |
| sk_X509_pop_free(chain, X509_free); |
| } |
| } else { |
| printf("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; |
| } |
