fixed more uClibc issues

should compile against a uClibc > 0.9.28 (untested)

HACKING

@@ -2,6 +2,9 @@
                   strongSwan - Development
                  -------------------------
 
+Subversion repository
+---------------------
+
 For interested developers, we have a public repository. To check out and 
 compile the code, you need the following tools:
 
@@ -33,3 +36,21 @@ Then you're in, start the build as usual:
     ./configure [options]
     make
     make install
+
+
+uClibc support
+--------------
+
+Support for uClibc is still work in progress. To get startet with strongSwan
+on uClibc, yoou need version which supports getifaddrs ( > 0.9.28).
+Additionally, you need the at least the following options:
+
+String and Stdio Support --->
+  [*] Support glibc's register_printf_function()
+  [*] Support the '%m' specifier in printf format strings
+General Library Settings --->
+  [*] Support global constructors and destructors
+
+We must reduce the number of printf handlers, as uClibc only supports 10 of
+them. It is fairly untested yet, so don't except to get it running without
+further tweaks.

configure.in

@@ -88,7 +88,7 @@ AC_PROG_INSTALL
 AC_PROG_LIBTOOL
 AC_PROG_LEX
 AC_PROG_YACC
-AC_PROG_CC(intel)
+AC_PROG_CC()
 AC_PATH_PROG([GPERF], [gperf], [], [$PATH:/bin:/usr/bin:/usr/local/bin])
 AC_PATH_PROG([PERL], [perl], [], [$PATH:/bin:/usr/bin:/usr/local/bin])
 
@@ -96,7 +96,7 @@ dnl ==========================
 dnl  check required libraries
 dnl ==========================
 
-AC_CHECK_FUNCS(backtrace getifaddrs)
+AC_CHECK_FUNCS(backtrace)
 
 AC_HAVE_LIBRARY([gmp],[LIBS="$LIBS"],[AC_MSG_ERROR([GNU Multi Precision library gmp not found])])	
 if test "$ldap" = "true"; then

src/charon/network/socket.c

@@ -75,6 +75,11 @@
 #define IPV6_2292PKTINFO 2
 #endif /*IPV6_2292PKTINFO*/
 
+/* missing on uclibc */
+#ifndef IPV6_IPSEC_POLICY
+#define IPV6_IPSEC_POLICY 34
+#endif /*IPV6_IPSEC_POLICY*/
+
 typedef struct private_socket_t private_socket_t;
 
 /**
@@ -545,13 +550,11 @@ static int open_send_socket(private_socket_t *this, int family, u_int16_t port)
 	}
 	
 	/* bypass outgoung IKE traffic on send socket */
+	memset(&policy, 0, sizeof(policy));
 	policy.sadb_x_policy_len = sizeof(policy) / sizeof(u_int64_t);
 	policy.sadb_x_policy_exttype = SADB_X_EXT_POLICY;
 	policy.sadb_x_policy_type = IPSEC_POLICY_BYPASS;
 	policy.sadb_x_policy_dir = IPSEC_DIR_OUTBOUND;
-	policy.sadb_x_policy_reserved = 0;
-	policy.sadb_x_policy_id = 0;
-	policy.sadb_x_policy_priority = 0;
 	
 	if (setsockopt(skt, sol, ipsec_policy, &policy, sizeof(policy)) < 0)
 	{
@@ -687,13 +690,11 @@ static int open_recv_socket(private_socket_t *this, int family)
 	}
 	
 	/* bypass incomining IKE traffic on this socket */
+	memset(&policy, 0, sizeof(policy));
 	policy.sadb_x_policy_len = sizeof(policy) / sizeof(u_int64_t);
 	policy.sadb_x_policy_exttype = SADB_X_EXT_POLICY;
 	policy.sadb_x_policy_type = IPSEC_POLICY_BYPASS;
 	policy.sadb_x_policy_dir = IPSEC_DIR_INBOUND;
-	policy.sadb_x_policy_reserved = 0;
-	policy.sadb_x_policy_id = 0;
-	policy.sadb_x_policy_priority = 0;
 	
 	if (setsockopt(skt, sol, ipsec_policy, &policy, sizeof(policy)) < 0)
 	{