-/* Copyright (C) 2009, Martin Johansson <martin@fatbob.nu>
- Copyright (C) 2005-2009, Thorvald Natvig <thorvald@natvig.com>
+/* Copyright (C) 2009-2013, Martin Johansson <martin@fatbob.nu>
+ Copyright (C) 2005-2013, Thorvald Natvig <thorvald@natvig.com>
All rights reserved.
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
-#include <openssl/x509v3.h>
-#include <openssl/ssl.h>
-#include <openssl/err.h>
-#include <openssl/safestack.h>
#include <string.h>
+#include <stdlib.h>
+#include <fcntl.h>
#include "conf.h"
#include "log.h"
#include "ssl.h"
+#ifdef USE_POLARSSL
+/*
+ * PolarSSL interface
+ */
+
+#include <polarssl/config.h>
+#include <polarssl/havege.h>
+#include <polarssl/certs.h>
+#include <polarssl/x509.h>
+#include <polarssl/ssl.h>
+#include <polarssl/net.h>
+
+#ifdef POLARSSL_API_V1_2_ABOVE
+int ciphers[] =
+{
+ TLS_DHE_RSA_WITH_AES_256_CBC_SHA,
+ TLS_RSA_WITH_AES_256_CBC_SHA,
+ TLS_RSA_WITH_AES_128_CBC_SHA,
+ 0
+};
+#else
+int ciphers[] =
+{
+ SSL_EDH_RSA_AES_256_SHA,
+ SSL_RSA_AES_256_SHA,
+ SSL_RSA_AES_128_SHA,
+ 0
+};
+#endif
+
+#ifdef POLARSSL_API_V1_3_ABOVE
+static x509_crt certificate;
+static inline int x509parse_keyfile(rsa_context *rsa, const char *path,
+ const char *pwd)
+{
+ int ret;
+ pk_context pk;
+
+ pk_init(&pk);
+ ret = pk_parse_keyfile(&pk, path, pwd);
+ if (ret == 0 && !pk_can_do( &pk, POLARSSL_PK_RSA))
+ ret = POLARSSL_ERR_PK_TYPE_MISMATCH;
+ if (ret == 0)
+ rsa_copy(rsa, pk_rsa(pk));
+ else
+ rsa_free(rsa);
+ pk_free(&pk);
+ return ret;
+}
+#else
+static x509_cert certificate;
+#endif
+
+static rsa_context key;
+bool_t builtInTestCertificate;
+
+#ifdef USE_POLARSSL_HAVEGE
+havege_state hs;
+#else
+int urandom_fd;
+#endif
+
+/* DH prime */
+char *my_dhm_P =
+ "9CE85640903BF123906947FEDE767261" \
+ "D9B4A973EB8F7D984A8C656E2BCC161C" \
+ "183D4CA471BA78225F940F16D1D99CA3" \
+ "E66152CC68EDCE1311A390F307741835" \
+ "44FF6AB553EC7073AD0CB608F2A3B480" \
+ "19E6C02BCED40BD30E91BB2469089670" \
+ "DEF409C08E8AC24D1732A6128D2220DC53";
+char *my_dhm_G = "4";
+
+#ifdef USE_POLARSSL_TESTCERT
+static void initTestCert()
+{
+ int rc;
+ builtInTestCertificate = true;
+#ifdef POLARSSL_API_V1_3_ABOVE
+ rc = x509_crt_parse_rsa(&certificate, (unsigned char *)test_srv_crt,
+ strlen(test_srv_crt));
+#else
+ rc = x509parse_crt(&certificate, (unsigned char *)test_srv_crt,
+ strlen(test_srv_crt));
+#endif
+ if (rc != 0)
+ Log_fatal("Could not parse built-in test certificate");
+}
+
+static void initTestKey()
+{
+ int rc;
+
+ rc = x509parse_key_rsa(&key, (unsigned char *)test_srv_key,
+ strlen(test_srv_key), NULL, 0);
+ if (rc != 0)
+ Log_fatal("Could not parse built-in test RSA key");
+}
+#endif
+
+/*
+ * How to generate a self-signed cert with openssl:
+ * openssl genrsa 1024 > host.key
+ * openssl req -new -x509 -nodes -sha1 -days 365 -key host.key > host.cert
+ */
+static void initCert()
+{
+ int rc;
+ char *crtfile = (char *)getStrConf(CERTIFICATE);
+
+ if (crtfile == NULL) {
+#ifdef USE_POLARSSL_TESTCERT
+ Log_warn("No certificate file specified. Falling back to test certificate.");
+ initTestCert();
+#else
+ Log_fatal("No certificate file specified");
+#endif
+ return;
+ }
+#ifdef POLARSSL_API_V1_3_ABOVE
+ rc = x509_crt_parse_file(&certificate, crtfile);
+#else
+ rc = x509parse_crtfile(&certificate, crtfile);
+#endif
+ if (rc != 0) {
+#ifdef USE_POLARSSL_TESTCERT
+ Log_warn("Could not read certificate file '%s'. Falling back to test certificate.", crtfile);
+ initTestCert();
+#else
+ Log_fatal("Could not read certificate file '%s'", crtfile);
+#endif
+ return;
+ }
+}
+
+static void initKey()
+{
+ int rc;
+ char *keyfile = (char *)getStrConf(KEY);
+
+ if (keyfile == NULL)
+ Log_fatal("No key file specified");
+ rc = x509parse_keyfile(&key, keyfile, NULL);
+ if (rc != 0)
+ Log_fatal("Could not read RSA key file %s", keyfile);
+}
+
+#ifndef USE_POLARSSL_HAVEGE
+int urandom_bytes(void *ctx, unsigned char *dest, size_t len)
+{
+ int cur;
+
+ while (len) {
+ cur = read(urandom_fd, dest, len);
+ if (cur < 0)
+ continue;
+ len -= cur;
+ }
+ return 0;
+}
+#endif
+
+#define DEBUG_LEVEL 0
+static void pssl_debug(void *ctx, int level, const char *str)
+{
+ if (level <= DEBUG_LEVEL)
+ Log_info("PolarSSL [level %d]: %s", level, str);
+}
+
+void SSLi_init(void)
+{
+ char verstring[12];
+
+ initCert();
+#ifdef USE_POLARSSL_TESTCERT
+ if (builtInTestCertificate) {
+ Log_warn("*** Using built-in test certificate and RSA key ***");
+ Log_warn("*** This is not secure! Please use a CA-signed certificate or create a key and self-signed certificate ***");
+ initTestKey();
+ }
+ else
+ initKey();
+#else
+ initKey();
+#endif
+
+ /* Initialize random number generator */
+#ifdef USE_POLARSSL_HAVEGE
+ havege_init(&hs);
+#else
+ urandom_fd = open("/dev/urandom", O_RDONLY);
+ if (urandom_fd < 0)
+ Log_fatal("Cannot open /dev/urandom");
+#endif
+
+ version_get_string(verstring);
+ Log_info("PolarSSL library version %s initialized", verstring);
+}
+
+void SSLi_deinit(void)
+{
+#ifdef POLARSSL_API_V1_3_ABOVE
+ x509_crt_free(&certificate);
+#else
+ x509_free(&certificate);
+#endif
+ rsa_free(&key);
+}
+
+/* Create SHA1 of last certificate in the peer's chain. */
+bool_t SSLi_getSHA1Hash(SSL_handle_t *ssl, uint8_t *hash)
+{
+#ifdef POLARSSL_API_V1_3_ABOVE
+ x509_crt const *cert;
+#else
+ x509_cert const *cert;
+#endif
+#ifdef POLARSSL_API_V1_2_ABOVE
+ cert = ssl_get_peer_cert(ssl);
+#else
+ cert = ssl->peer_cert;
+#endif
+ if (!cert) {
+ return false;
+ }
+ sha1(cert->raw.p, cert->raw.len, hash);
+ return true;
+}
+
+SSL_handle_t *SSLi_newconnection(int *fd, bool_t *SSLready)
+{
+ ssl_context *ssl;
+ ssl_session *ssn;
+ int rc;
+
+ ssl = malloc(sizeof(ssl_context));
+ ssn = malloc(sizeof(ssl_session));
+ if (!ssl || !ssn)
+ Log_fatal("Out of memory");
+ memset(ssl, 0, sizeof(ssl_context));
+ memset(ssn, 0, sizeof(ssl_session));
+
+ rc = ssl_init(ssl);
+ if (rc != 0 )
+ Log_fatal("Failed to initialize: %d", rc);
+
+ ssl_set_endpoint(ssl, SSL_IS_SERVER);
+ ssl_set_authmode(ssl, SSL_VERIFY_OPTIONAL);
+
+#ifdef USE_POLARSSL_HAVEGE
+ ssl_set_rng(ssl, HAVEGE_RAND, &hs);
+#else
+ ssl_set_rng(ssl, urandom_bytes, NULL);
+#endif
+
+ ssl_set_dbg(ssl, pssl_debug, NULL);
+ ssl_set_bio(ssl, net_recv, fd, net_send, fd);
+
+ ssl_set_ciphersuites(ssl, ciphers);
+
+#ifdef POLARSSL_API_V1_2_ABOVE
+ ssl_set_session(ssl, ssn);
+#else
+ ssl_set_session(ssl, 0, 0, ssn);
+#endif
+
+ ssl_set_ca_chain(ssl, &certificate, NULL, NULL);
+#ifdef POLARSSL_API_V1_3_ABOVE
+ ssl_set_own_cert_rsa(ssl, &certificate, &key);
+#else
+ ssl_set_own_cert(ssl, &certificate, &key);
+#endif
+ ssl_set_dh_param(ssl, my_dhm_P, my_dhm_G);
+
+ return ssl;
+}
+
+int SSLi_nonblockaccept(SSL_handle_t *ssl, bool_t *SSLready)
+{
+ int rc;
+
+ rc = ssl_handshake(ssl);
+ if (rc != 0) {
+ if (rc == POLARSSL_ERR_NET_WANT_READ || rc == POLARSSL_ERR_NET_WANT_WRITE) {
+ return 0;
+ } else if (rc == POLARSSL_ERR_X509_CERT_VERIFY_FAILED) { /* Allow this (selfsigned etc) */
+ return 0;
+ } else {
+ Log_warn("SSL handshake failed: %d", rc);
+ return -1;
+ }
+ }
+ *SSLready = true;
+ return 0;
+}
+
+int SSLi_read(SSL_handle_t *ssl, uint8_t *buf, int len)
+{
+ int rc;
+
+ rc = ssl_read(ssl, buf, len);
+ if (rc == POLARSSL_ERR_NET_WANT_READ)
+ return SSLI_ERROR_WANT_READ;
+ return rc;
+}
+
+int SSLi_write(SSL_handle_t *ssl, uint8_t *buf, int len)
+{
+ int rc;
+
+ rc = ssl_write(ssl, buf, len);
+ if (rc == POLARSSL_ERR_NET_WANT_WRITE)
+ return SSLI_ERROR_WANT_WRITE;
+ return rc;
+}
+
+int SSLi_get_error(SSL_handle_t *ssl, int code)
+{
+ return code;
+}
+
+bool_t SSLi_data_pending(SSL_handle_t *ssl)
+{
+ return ssl_get_bytes_avail(ssl) > 0;
+}
+
+void SSLi_shutdown(SSL_handle_t *ssl)
+{
+ ssl_close_notify(ssl);
+}
+
+void SSLi_free(SSL_handle_t *ssl)
+{
+ Log_debug("SSLi_free");
+#if (POLARSSL_VERSION_MINOR <= 2 && POLARSSL_VERSION_PATCH < 6)
+ free(ssl->session); /* Workaround for memory leak in PolarSSL < 1.2.6 */
+ ssl->session = NULL;
+#endif
+ ssl_free(ssl);
+ free(ssl);
+}
+
+#else
+/*
+ * OpenSSL interface
+ */
+
+#include <openssl/x509v3.h>
+#include <openssl/ssl.h>
+#include <openssl/err.h>
+#include <openssl/safestack.h>
static X509 *x509;
static RSA *rsa;
static SSL_CTX *context;
static EVP_PKEY *pkey;
+
+static int verify_callback(int preverify_ok, X509_STORE_CTX *ctx);
static int SSL_add_ext(X509 * crt, int nid, char *value) {
X509_EXTENSION *ex;
return rsa;
}
-void SSL_writecert(char *certfile, X509 *x509)
+static void SSL_writecert(char *certfile, X509 *x509)
{
FILE *fp;
- BIO *err_output;
-
- /* prepare a BIO for outputting error messages */
-
- err_output = BIO_new_fp(stderr,BIO_NOCLOSE);
-
+
/* open the private key file */
fp = fopen(certfile, "w");
if (fp == NULL) {
- BIO_printf(err_output, "Unable to open the X509 file for writing.\n");
- BIO_free(err_output);
+ Log_warn("Unable to open the X509 file %s for writing", certfile);
return;
- }
-
+ }
if (PEM_write_X509(fp, x509) == 0) {
- BIO_printf(err_output, "Error trying to write X509 info.\n");
- ERR_print_errors(err_output);
+ Log_warn("Error trying to write X509 info.");
}
fclose(fp);
}
-void SSL_writekey(char *keyfile, RSA *rsa)
+static void SSL_writekey(char *keyfile, RSA *rsa)
{
FILE *fp;
- BIO *err_output;
- /* prepare a BIO for outputing error messages */
- err_output = BIO_new_fp(stderr, BIO_NOCLOSE);
/* open the private key file for reading */
fp = fopen(keyfile, "w");
if (fp == NULL) {
- BIO_printf(err_output, "Unable to open the private key file %s for writing.\n", keyfile);
- BIO_free(err_output);
+ Log_warn("Unable to open the private key file %s for writing.", keyfile);
return;
}
if (PEM_write_RSAPrivateKey(fp, rsa, NULL, NULL, 0, NULL, NULL) == 0) {
- /* error reading the key - check the error stack */
- BIO_printf(err_output, "Error trying to write private key\n");
- ERR_print_errors(err_output);
+ Log_warn("Error trying to write private key");
}
fclose(fp);
}
-void SSL_initializeCert() {
+static void SSL_initializeCert() {
char *crt, *key, *pass;
crt = (char *)getStrConf(CERTIFICATE);
#endif
if (!rsa || !x509) {
- logthis("Generating new server certificate.");
+ Log_info("Generating new server certificate.");
- BIO *bio_err;
CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
-
- bio_err=BIO_new_fp(stderr, BIO_NOCLOSE);
-
+
x509 = X509_new();
pkey = EVP_PKEY_new();
rsa = RSA_generate_key(1024,RSA_F4,NULL,NULL);
}
-void SSL_getdigest(char *s, int l)
-{
- unsigned char md[EVP_MAX_MD_SIZE];
- unsigned int n;
- int j;
-
- if (!X509_digest (x509, EVP_md5(), md, &n))
- {
- snprintf (s, l, "[unable to calculate]");
- }
- else
- {
- for (j = 0; j < (int) n; j++)
- {
- char ch[8];
- snprintf(ch, 8, "%02X%s", md[j], (j % 2 ? " " : ""));
- strcat(s, ch);
- }
- }
-}
-
-void SSL_init(void)
+void SSLi_init(void)
{
- SSL_METHOD *method;
+ const SSL_METHOD *method;
SSL *ssl;
- int i, offset = 0;
+ int i, offset = 0, cipherstringlen = 0;
STACK_OF(SSL_CIPHER) *cipherlist = NULL, *cipherlist_new = NULL;
SSL_CIPHER *cipher;
- char cipherstring[1024];
+ char *cipherstring, tempstring[128];
SSL_library_init();
OpenSSL_add_all_algorithms(); /* load & register all cryptos, etc. */
sk_SSL_CIPHER_push(cipherlist_new, cipher);
}
}
- Log_info("List of ciphers:");
+ Log_debug("List of ciphers:");
if (cipherlist_new) {
- for ( i = 0; (cipher = sk_SSL_CIPHER_value(cipherlist_new, i)) != NULL; i++) {
- Log_info("%s", SSL_CIPHER_get_name(cipher));
- offset += snprintf(cipherstring + offset, 1024 - offset, "%s:", SSL_CIPHER_get_name(cipher));
+ for (i = 0; (cipher = sk_SSL_CIPHER_value(cipherlist_new, i)) != NULL; i++) {
+ Log_debug("%s", SSL_CIPHER_get_name(cipher));
+ cipherstringlen += strlen(SSL_CIPHER_get_name(cipher)) + 1;
+ }
+ cipherstring = malloc(cipherstringlen + 1);
+ if (cipherstring == NULL)
+ Log_fatal("Out of memory");
+ for (i = 0; (cipher = sk_SSL_CIPHER_value(cipherlist_new, i)) != NULL; i++) {
+ offset += sprintf(cipherstring + offset, "%s:", SSL_CIPHER_get_name(cipher));
}
- cipherstring[offset - 1] = '\0';
}
if (cipherlist_new)
if (SSL_CTX_set_cipher_list(context, cipherstring) == 0)
Log_fatal("Failed to set cipher list!");
-
+
+ free(cipherstring);
+
+ SSL_CTX_set_verify(context, SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,
+ verify_callback);
SSL_free(ssl);
+ Log_info("OpenSSL library initialized");
+
}
-void SSL_deinit(void)
+void SSLi_deinit(void)
{
SSL_CTX_free(context);
EVP_cleanup();
}
-int SSL_nonblockaccept(SSL *ssl, bool_t *SSLready)
+int SSLi_nonblockaccept(SSL_handle_t *ssl, bool_t *SSLready)
{
int rc;
rc = SSL_accept(ssl);
return 0;
}
-SSL *SSL_newconnection(int fd, bool_t *SSLready)
+SSL_handle_t *SSLi_newconnection(int *fd, bool_t *SSLready)
{
SSL *ssl;
*SSLready = false;
ssl = SSL_new(context);
- SSL_set_fd(ssl, fd);
- if (SSL_nonblockaccept(ssl, SSLready) < 0) {
+ SSL_set_fd(ssl, *fd);
+ if (SSLi_nonblockaccept(ssl, SSLready) < 0) {
SSL_free(ssl);
return NULL;
}
return ssl;
}
-void SSL_closeconnection(SSL *ssl)
+/* Create SHA1 of last certificate in the peer's chain. */
+bool_t SSLi_getSHA1Hash(SSL_handle_t *ssl, uint8_t *hash)
+{
+ X509 *x509;
+ uint8_t *buf, *p;
+ int len;
+
+ x509 = SSL_get_peer_certificate(ssl);
+ if (!x509) {
+ return false;
+ }
+
+ len = i2d_X509(x509, NULL);
+ buf = malloc(len);
+ if (buf == NULL) {
+ Log_fatal("malloc");
+ }
+
+ p = buf;
+ i2d_X509(x509, &p);
+
+ SHA1(buf, len, hash);
+ free(buf);
+ return true;
+}
+
+void SSLi_closeconnection(SSL_handle_t *ssl)
{
SSL_free(ssl);
}
+void SSLi_shutdown(SSL_handle_t *ssl)
+{
+ SSL_shutdown(ssl);
+}
+
+int SSLi_read(SSL_handle_t *ssl, uint8_t *buf, int len)
+{
+ return SSL_read(ssl, buf, len);
+}
+
+int SSLi_write(SSL_handle_t *ssl, uint8_t *buf, int len)
+{
+ return SSL_write(ssl, buf, len);
+}
+
+int SSLi_get_error(SSL_handle_t *ssl, int code)
+{
+ return SSL_get_error(ssl, code);
+}
+bool_t SSLi_data_pending(SSL_handle_t *ssl)
+{
+ return SSL_pending(ssl);
+}
+
+void SSLi_free(SSL_handle_t *ssl)
+{
+ SSL_free(ssl);
+}
+
+static int verify_callback(int preverify_ok, X509_STORE_CTX *ctx)
+{
+ char buf[256];
+ X509 *err_cert;
+ int err, depth;
+ SSL *ssl;
+
+ err_cert = X509_STORE_CTX_get_current_cert(ctx);
+ err = X509_STORE_CTX_get_error(ctx);
+ depth = X509_STORE_CTX_get_error_depth(ctx);
+
+ ssl = X509_STORE_CTX_get_ex_data(ctx, SSL_get_ex_data_X509_STORE_CTX_idx());
+ X509_NAME_oneline(X509_get_subject_name(err_cert), buf, 256);
+
+ if (depth > 5) {
+ preverify_ok = 0;
+ err = X509_V_ERR_CERT_CHAIN_TOO_LONG;
+ X509_STORE_CTX_set_error(ctx, err);
+ }
+ if (!preverify_ok) {
+ Log_warn("SSL: verify error:num=%d:%s:depth=%d:%s\n", err,
+ X509_verify_cert_error_string(err), depth, buf);
+ }
+ /*
+ * At this point, err contains the last verification error. We can use
+ * it for something special
+ */
+ if (!preverify_ok && (err == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT)) {
+ X509_NAME_oneline(X509_get_issuer_name(ctx->current_cert), buf, 256);
+ Log_warn("issuer= %s", buf);
+ }
+ return 1;
+}
+
+#endif
projects / umurmur.git / blobdiff