The sync filter.

[paraslash.git] / net.c

diff --git a/net.c b/net.c
index 70cf6a87dfb27bbba74912bb50467a0a74f966bd..986660fa8f12fd11649d9bd4b3310b01837811dc 100644 (file)
--- a/net.c
+++ b/net.c
@@ -355,7 +355,7 @@ void flowopt_cleanup(struct flowopts *fo)
        free(fo);
 }
 
-/*
+/**
  * Resolve an IPv4/IPv6 address.
  *
  * \param l4type The layer-4 type (\p IPPROTO_xxx).
@@ -373,7 +373,7 @@ void flowopt_cleanup(struct flowopts *fo)
  *
  * \sa getaddrinfo(3).
  */
-static int lookup_address(unsigned l4type, bool passive, const char *host,
+int lookup_address(unsigned l4type, bool passive, const char *host,
                int port_number, struct addrinfo **result)
 {
        int ret;
@@ -409,7 +409,7 @@ static int lookup_address(unsigned l4type, bool passive, const char *host,
        return 1;
 }
 
-/*
+/**
  * Create an active or passive socket.
  *
  * \param l4type \p IPPROTO_TCP, \p IPPROTO_UDP, or \p IPPROTO_DCCP.
@@ -426,7 +426,7 @@ static int lookup_address(unsigned l4type, bool passive, const char *host,
  * \sa \ref lookup_address(), \ref makesock(), ip(7), ipv6(7), bind(2),
  * connect(2).
  */
-static int makesock_addrinfo(unsigned l4type, bool passive, struct addrinfo *ai,
+int makesock_addrinfo(unsigned l4type, bool passive, struct addrinfo *ai,
                struct flowopts *fo)
 {
        int ret = -E_MAKESOCK, on = 1;
@@ -710,6 +710,32 @@ void extract_v4_addr(const struct sockaddr_storage *ss, struct in_addr *ia)
                *ia = ((struct sockaddr_in *)sa)->sin_addr;
 }
 
+/**
+ * Compare the address part of IPv4/6 addresses.
+ *
+ * \param sa1 First address.
+ * \param sa2 Second address.
+ *
+ * \return True iff the IP address of \a sa1 and \a sa2 match.
+ */
+bool sockaddr_equal(const struct sockaddr *sa1, const struct sockaddr *sa2)
+{
+       if (!sa1 || !sa2)
+               return false;
+       if (sa1->sa_family != sa2->sa_family)
+               return false;
+       if (sa1->sa_family == AF_INET) {
+               struct sockaddr_in *a1 = (typeof(a1))sa1,
+                       *a2 = (typeof (a2))sa2;
+               return a1->sin_addr.s_addr == a2->sin_addr.s_addr;
+       } else if (sa1->sa_family == AF_INET6) {
+               struct sockaddr_in6 *a1 = (typeof(a1))sa1,
+                       *a2 = (typeof (a2))sa2;
+               return !memcmp(a1, a2, sizeof(*a1));
+       } else
+               return false;
+}
+
 /**
  * Receive data from a file descriptor.
  *