--- /dev/null
+/*
+ * Copyright 2015-2016 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 <string.h>
+#include <ctype.h>
+#include <limits.h>
+#include <errno.h>
+
+#include <openssl/crypto.h>
+#include <openssl/evp.h>
+#include <openssl/x509.h>
+#include <openssl/ssl.h>
+#include <openssl/err.h>
+#include <openssl/conf.h>
+#ifndef OPENSSL_NO_ENGINE
+#include <openssl/engine.h>
+#endif
+
+#include "../e_os.h"
+
+#define _UC(c) ((unsigned char)(c))
+
+static const char *progname;
+
+/*
+ * Forward declaration, of function that uses internal interfaces, from headers
+ * included at the end of this module.
+ */
+static void store_ctx_dane_init(X509_STORE_CTX *, SSL *);
+
+static int saved_errno;
+
+static void save_errno(void)
+{
+ saved_errno = errno;
+}
+
+static int restore_errno(void)
+{
+ int ret = errno;
+ errno = saved_errno;
+ return ret;
+}
+
+static void test_usage(void)
+{
+ fprintf(stderr, "usage: %s: danetest basedomain CAfile tlsafile\n", progname);
+}
+
+static void print_errors(void)
+{
+ unsigned long err;
+ char buffer[1024];
+ const char *file;
+ const char *data;
+ int line;
+ int flags;
+
+ while ((err = ERR_get_error_line_data(&file, &line, &data, &flags)) != 0) {
+ ERR_error_string_n(err, buffer, sizeof(buffer));
+ if (flags & ERR_TXT_STRING)
+ fprintf(stderr, "Error: %s:%s:%d:%s\n", buffer, file, line, data);
+ else
+ fprintf(stderr, "Error: %s:%s:%d\n", buffer, file, line);
+ }
+}
+
+static int verify_chain(SSL *ssl, STACK_OF(X509) *chain)
+{
+ int ret = -1;
+ X509_STORE_CTX *store_ctx;
+ SSL_CTX *ssl_ctx = SSL_get_SSL_CTX(ssl);
+ X509_STORE *store = SSL_CTX_get_cert_store(ssl_ctx);
+ int store_ctx_idx = SSL_get_ex_data_X509_STORE_CTX_idx();
+ X509 *cert = sk_X509_value(chain, 0);
+
+ if ((store_ctx = X509_STORE_CTX_new()) == NULL)
+ return -1;
+
+ if (!X509_STORE_CTX_init(store_ctx, store, cert, chain))
+ goto end;
+ if (!X509_STORE_CTX_set_ex_data(store_ctx, store_ctx_idx, ssl))
+ goto end;
+
+ X509_STORE_CTX_set_default(store_ctx,
+ SSL_is_server(ssl) ? "ssl_client" : "ssl_server");
+ X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(store_ctx),
+ SSL_get0_param(ssl));
+ store_ctx_dane_init(store_ctx, ssl);
+
+ if (SSL_get_verify_callback(ssl))
+ X509_STORE_CTX_set_verify_cb(store_ctx, SSL_get_verify_callback(ssl));
+
+ ret = X509_verify_cert(store_ctx);
+
+ SSL_set_verify_result(ssl, X509_STORE_CTX_get_error(store_ctx));
+ X509_STORE_CTX_cleanup(store_ctx);
+end:
+ X509_STORE_CTX_free(store_ctx);
+
+ return (ret);
+}
+
+static STACK_OF(X509) *load_chain(BIO *fp, int nelem)
+{
+ int count;
+ char *name = 0;
+ char *header = 0;
+ unsigned char *data = 0;
+ long len;
+ char *errtype = 0; /* if error: cert or pkey? */
+ STACK_OF(X509) *chain;
+ typedef X509 *(*d2i_X509_t)(X509 **, const unsigned char **, long);
+
+ if ((chain = sk_X509_new_null()) == 0) {
+ perror("malloc");
+ exit(1);
+ }
+
+ for (count = 0;
+ count < nelem && errtype == 0
+ && PEM_read_bio(fp, &name, &header, &data, &len);
+ ++count) {
+ const unsigned char *p = data;
+
+ if (strcmp(name, PEM_STRING_X509) == 0
+ || strcmp(name, PEM_STRING_X509_TRUSTED) == 0
+ || strcmp(name, PEM_STRING_X509_OLD) == 0) {
+ d2i_X509_t d = strcmp(name, PEM_STRING_X509_TRUSTED) ?
+ d2i_X509_AUX : d2i_X509;
+ X509 *cert = d(0, &p, len);
+
+ if (cert == 0 || (p - data) != len)
+ errtype = "certificate";
+ else if (sk_X509_push(chain, cert) == 0) {
+ perror("malloc");
+ goto err;
+ }
+ } else {
+ fprintf(stderr, "unexpected chain file object: %s\n", name);
+ goto err;
+ }
+
+ /*
+ * If any of these were null, PEM_read() would have failed.
+ */
+ OPENSSL_free(name);
+ OPENSSL_free(header);
+ OPENSSL_free(data);
+ }
+
+ if (errtype) {
+ fprintf(stderr, "error reading: malformed %s\n", errtype);
+ goto err;
+ }
+
+ if (count == nelem) {
+ ERR_clear_error();
+ return chain;
+ }
+
+err:
+ /* Some other PEM read error */
+ sk_X509_pop_free(chain, X509_free);
+ print_errors();
+ return NULL;
+}
+
+static char *read_to_eol(BIO *f)
+{
+ static char buf[1024];
+ int n;
+
+ if (!BIO_gets(f, buf, sizeof(buf)))
+ return NULL;
+
+ n = strlen(buf);
+
+ if (buf[n-1] != '\n') {
+ if (n+1 == sizeof(buf)) {
+ fprintf(stderr, "%s: warning: input too long\n", progname);
+ } else {
+ fprintf(stderr, "%s: warning: EOF before newline\n", progname);
+ }
+ return NULL;
+ }
+
+ /* Trim trailing whitespace */
+ while (n > 0 && isspace(_UC(buf[n-1])))
+ buf[--n] = '\0';
+
+ return buf;
+}
+
+/*
+ * Hex decoder that tolerates optional whitespace
+ */
+static ossl_ssize_t hexdecode(const char *in, void *result)
+{
+ unsigned char **out = (unsigned char **)result;
+ unsigned char *ret = OPENSSL_malloc(strlen(in)/2);
+ unsigned char *cp = ret;
+ uint8_t byte;
+ int nibble = 0;
+
+ if (ret == NULL)
+ return -1;
+
+ for (byte = 0; *in; ++in) {
+ int x;
+
+ if (isspace(_UC(*in)))
+ continue;
+ x = OPENSSL_hexchar2int(*in);
+ if (x < 0) {
+ OPENSSL_free(ret);
+ return 0;
+ }
+ byte |= (char)x;
+ if ((nibble ^= 1) == 0) {
+ *cp++ = byte;
+ byte = 0;
+ } else {
+ byte <<= 4;
+ }
+ }
+ if (nibble != 0) {
+ OPENSSL_free(ret);
+ return 0;
+ }
+
+ return cp - (*out = ret);
+}
+
+static ossl_ssize_t checked_uint8(const char *in, void *out)
+{
+ uint8_t *result = (uint8_t *)out;
+ const char *cp = in;
+ char *endp;
+ long v;
+ int e;
+
+ save_errno();
+ v = strtol(cp, &endp, 10);
+ e = restore_errno();
+
+ if (((v == LONG_MIN || v == LONG_MAX) && e == ERANGE) ||
+ endp == cp || !isspace(_UC(*endp)) ||
+ v != (*(uint8_t *)result = (uint8_t) v)) {
+ return -1;
+ }
+ for (cp = endp; isspace(_UC(*cp)); ++cp)
+ continue;
+ return cp - in;
+}
+
+struct tlsa_field {
+ void *var;
+ const char *name;
+ ossl_ssize_t (*parser)(const char *, void *);
+};
+
+static int tlsa_import_rr(SSL *ssl, const char *rrdata)
+{
+ static uint8_t usage;
+ static uint8_t selector;
+ static uint8_t mtype;
+ static unsigned char *data = NULL;
+ static struct tlsa_field tlsa_fields[] = {
+ { &usage, "usage", checked_uint8 },
+ { &selector, "selector", checked_uint8 },
+ { &mtype, "mtype", checked_uint8 },
+ { &data, "data", hexdecode },
+ { NULL, }
+ };
+ int ret;
+ struct tlsa_field *f;
+ const char *cp = rrdata;
+ ossl_ssize_t len = 0;
+
+ for (f = tlsa_fields; f->var; ++f) {
+ if ((len = f->parser(cp += len, f->var)) <= 0) {
+ fprintf(stderr, "%s: warning: bad TLSA %s field in: %s\n",
+ progname, f->name, rrdata);
+ return 0;
+ }
+ }
+ ret = SSL_dane_tlsa_add(ssl, usage, selector, mtype, data, len);
+ OPENSSL_free(data);
+
+ if (ret == 0) {
+ print_errors();
+ fprintf(stderr, "%s: warning: unusable TLSA rrdata: %s\n",
+ progname, rrdata);
+ return 0;
+ }
+ if (ret < 0) {
+ fprintf(stderr, "%s: warning: error loading TLSA rrdata: %s\n",
+ progname, rrdata);
+ return 0;
+ }
+ return ret;
+}
+
+static int allws(const char *cp)
+{
+ while (*cp)
+ if (!isspace(_UC(*cp++)))
+ return 0;
+ return 1;
+}
+
+static int test_tlsafile(SSL_CTX *ctx, const char *basename,
+ BIO *f, const char *path)
+{
+ char *line;
+ int testno = 0;
+ int ret = 1;
+ SSL *ssl;
+
+ while (ret > 0 && (line = read_to_eol(f)) != NULL) {
+ STACK_OF(X509) *chain;
+ int ntlsa;
+ int ncert;
+ int noncheck;
+ int want;
+ int want_depth;
+ int off;
+ int i;
+ int ok;
+ int err;
+ int mdpth;
+
+ if (*line == '\0' || *line == '#')
+ continue;
+
+ ++testno;
+ if (sscanf(line, "%d %d %d %d %d%n",
+ &ntlsa, &ncert, &noncheck, &want, &want_depth, &off) != 5
+ || !allws(line + off)) {
+ fprintf(stderr, "Expected tlsa count, cert count and result"
+ " at test %d of %s\n", testno, path);
+ return 0;
+ }
+
+ if ((ssl = SSL_new(ctx)) == NULL)
+ return -1;
+ SSL_set_connect_state(ssl);
+ if (SSL_dane_enable(ssl, basename) <= 0) {
+ SSL_free(ssl);
+ return -1;
+ }
+ if (noncheck)
+ SSL_dane_set_flags(ssl, DANE_FLAG_NO_DANE_EE_NAMECHECKS);
+
+ for (i = 0; i < ntlsa; ++i) {
+ if ((line = read_to_eol(f)) == NULL || !tlsa_import_rr(ssl, line)) {
+ SSL_free(ssl);
+ return 0;
+ }
+ }
+
+ /* Don't report old news */
+ ERR_clear_error();
+ chain = load_chain(f, ncert);
+ if (chain == NULL) {
+ SSL_free(ssl);
+ return -1;
+ }
+
+ ok = verify_chain(ssl, chain);
+ sk_X509_pop_free(chain, X509_free);
+ err = SSL_get_verify_result(ssl);
+ /*
+ * Peek under the hood, normally TLSA match data is hidden when
+ * verification fails, we can obtain any suppressed data by setting the
+ * verification result to X509_V_OK before looking.
+ */
+ SSL_set_verify_result(ssl, X509_V_OK);
+ mdpth = SSL_get0_dane_authority(ssl, NULL, NULL);
+ /* Not needed any more, but lead by example and put the error back. */
+ SSL_set_verify_result(ssl, err);
+ SSL_free(ssl);
+
+ if (ok < 0) {
+ ret = 0;
+ fprintf(stderr, "verify_chain internal error in %s test %d\n",
+ path, testno);
+ print_errors();
+ continue;
+ }
+ if (err != want || (want == 0 && !ok)) {
+ ret = 0;
+ if (err != want) {
+ if (want == X509_V_OK)
+ fprintf(stderr, "Verification failure in %s test %d: %d: %s\n",
+ path, testno, err, X509_verify_cert_error_string(err));
+ else
+ fprintf(stderr, "Unexpected error in %s test %d: %d: wanted %d\n",
+ path, testno, err, want);
+ } else {
+ fprintf(stderr, "Verification failure in %s test %d: ok=0\n",
+ path, testno);
+ }
+ print_errors();
+ continue;
+ }
+ if (mdpth != want_depth) {
+ ret = 0;
+ fprintf(stderr, "Wrong match depth, in %s test %d: wanted %d, got: %d\n",
+ path, testno, want_depth, mdpth);
+ }
+ fprintf(stderr, "%s: test %d successful\n", path, testno);
+ }
+ ERR_clear_error();
+
+ return ret;
+}
+
+int main(int argc, char *argv[])
+{
+ BIO *f;
+ BIO *bio_err;
+ SSL_CTX *ctx = NULL;
+ const char *basedomain;
+ const char *CAfile;
+ const char *tlsafile;
+ const char *p;
+ int ret = 1;
+
+ progname = argv[0];
+ if (argc != 4) {
+ test_usage();
+ EXIT(ret);
+ }
+ basedomain = argv[1];
+ CAfile = argv[2];
+ tlsafile = argv[3];
+
+ bio_err = BIO_new_fp(stderr, BIO_NOCLOSE | BIO_FP_TEXT);
+
+ p = getenv("OPENSSL_DEBUG_MEMORY");
+ if (p != NULL && strcmp(p, "on") == 0)
+ CRYPTO_set_mem_debug(1);
+ CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
+
+ f = BIO_new_file(tlsafile, "r");
+ if (f == NULL) {
+ fprintf(stderr, "%s: Error opening tlsa record file: '%s': %s\n",
+ progname, tlsafile, strerror(errno));
+ EXIT(ret);
+ }
+
+ ctx = SSL_CTX_new(TLS_client_method());
+ if (SSL_CTX_dane_enable(ctx) <= 0) {
+ print_errors();
+ goto end;
+ }
+ if (!SSL_CTX_load_verify_locations(ctx, CAfile, NULL)) {
+ print_errors();
+ goto end;
+ }
+ if ((SSL_CTX_dane_mtype_set(ctx, EVP_sha512(), 2, 1)) <= 0) {
+ print_errors();
+ goto end;
+ }
+ if ((SSL_CTX_dane_mtype_set(ctx, EVP_sha256(), 1, 2)) <= 0) {
+ print_errors();
+ goto end;
+ }
+
+ if (test_tlsafile(ctx, basedomain, f, tlsafile) <= 0) {
+ print_errors();
+ goto end;
+ }
+
+ ret = 0;
+
+end:
+
+ BIO_free(f);
+ SSL_CTX_free(ctx);
+
+#ifndef OPENSSL_NO_CRYPTO_MDEBUG
+ if (CRYPTO_mem_leaks(bio_err) <= 0)
+ ret = 1;
+#endif
+ BIO_free(bio_err);
+ EXIT(ret);
+}
+
+#include <internal/dane.h>
+
+static void store_ctx_dane_init(X509_STORE_CTX *store_ctx, SSL *ssl)
+{
+ X509_STORE_CTX_set0_dane(store_ctx, SSL_get0_dane(ssl));
+}
projects / cassiopeia.git / blobdiff