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- #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:
-
- if (!load_certs(opt_arg(), 0, &untrusted, NULL,
- "untrusted certificates"))
- goto end;
- break;
- case OPT_TRUSTED:
-
- noCAfile = 1;
- noCApath = 1;
- noCAstore = 1;
- if (!load_certs(opt_arg(), 0, &trusted, NULL, "trusted certificates"))
- goto end;
- break;
- case OPT_CRLFILE:
-
- 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) {
-
- 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);
- 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));
-
- switch (cert_error) {
- case X509_V_ERR_NO_EXPLICIT_POLICY:
- policies_print(ctx);
-
- case X509_V_ERR_CERT_HAS_EXPIRED:
-
- case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
-
- 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:
-
- 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;
- }
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