X-Git-Url: http://git.code-monkey.de/?a=blobdiff_plain;f=src%2Fssl.c;h=9c5236ec6815dff9d70f16890e1d5c973b436b7f;hb=b95d77db3f58c300c5e0a9c11862a4ba529ce82b;hp=d337e443c26875f0cb41e48acda3e02a8cc83b71;hpb=24eae60940b662324e71fe350108de759dc2511a;p=umurmur.git

diff --git a/src/ssl.c b/src/ssl.c
index d337e44..9c5236e 100644
--- a/src/ssl.c
+++ b/src/ssl.c
@@ -30,6 +30,7 @@
 */
 #include <string.h>
 #include <stdlib.h>
+#include <fcntl.h>
 
 #include "conf.h"
 #include "log.h"
@@ -67,7 +68,11 @@ static x509_cert certificate;
 static rsa_context key;
 bool_t builtInTestCertificate;
 
-havege_state hs; /* exported to crypt.c */
+#ifdef USE_POLARSSL_HAVEGE
+havege_state hs;
+#else
+int urandom_fd;
+#endif
 
 /* DH prime */
 char *my_dhm_P =
@@ -80,6 +85,7 @@ char *my_dhm_P =
 	"DEF409C08E8AC24D1732A6128D2220DC53";
 char *my_dhm_G = "4";
 
+#ifdef USE_POLARSSL_TESTCERT
 static void initTestCert()
 {
 	int rc;
@@ -99,6 +105,7 @@ static void initTestKey()
 	if (rc != 0)
 		Log_fatal("Could not parse built-in test RSA key");
 }
+#endif
 
 /*
  * How to generate a self-signed cert with openssl:
@@ -111,14 +118,22 @@ static void initCert()
 	char *crtfile = (char *)getStrConf(CERTIFICATE);
 	
 	if (crtfile == NULL) {
-		Log_warn("No certificate file specified");
+#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;
 	}
 	rc = x509parse_crtfile(&certificate, crtfile);
 	if (rc != 0) {
-		Log_warn("Could not read certificate file %s", crtfile);
+#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;
 	}
 }
@@ -135,6 +150,20 @@ static void initKey()
 		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;
+	}
+}
+#endif
+
 #define DEBUG_LEVEL 0
 static void pssl_debug(void *ctx, int level, const char *str)
 {
@@ -147,14 +176,27 @@ 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 self-signed certificate ***");
+		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");
+    Log_info("Using random number generator /dev/urandom");
+#endif
     
 #ifdef POLARSSL_VERSION_MAJOR
     version_get_string(verstring);
@@ -205,8 +247,13 @@ SSL_handle_t *SSLi_newconnection(int *fd, bool_t *SSLready)
 	
 	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);