File openssh-4.7p1-addrlist.dif of Package openssh

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File openssh-4.7p1-addrlist.dif of Package openssh (Revision 7f2485d197cb62410c9f3f4b52ae6aa3)

Currently displaying revision 7f2485d197cb62410c9f3f4b52ae6aa3 , Show latest

--- sshd.c
+++ sshd.c
@@ -253,6 +253,62 @@
 
 static void do_ssh1_kex(void);
 static void do_ssh2_kex(void);
+char * isaddr(struct addrinfo *addr, char *name);
+void remove_duplicities(struct addrinfo *addr, char *port);
+
+/*
+ * returns port if addr equals name
+ */
+
+char*
+isaddr(struct addrinfo *addr, char *name)
+{
+    char ntop[NI_MAXHOST];
+    char *strport;
+    
+    strport = (char*) malloc(NI_MAXSERV+1);
+    if (getnameinfo(addr->ai_addr, addr->ai_addrlen,
+        ntop, sizeof(ntop), strport, sizeof(strport), 
+        NI_NUMERICHOST|NI_NUMERICSERV) != 0) {
+            error("getnameinfo failed");
+            free(strport);
+            return NULL;
+    }
+    if (!strcmp(ntop,name))
+        return strport;
+    else{
+        free(strport);
+        return NULL;
+    }
+
+}
+
+/*
+ * it removes all "0.0.0.0" elements with given port
+ * from the list
+ */
+
+void
+remove_duplicities(struct addrinfo *ai_start, char *port)
+{
+    struct addrinfo *ai, *ai1, *aiprev, *ainext;
+    char *port1;
+
+    aiprev=ai_start;
+    for (ai = ai_start->ai_next; ai; ai = ainext) {
+        ainext = ai->ai_next;
+        port1 = isaddr(ai, "0.0.0.0");
+        if (port1 && !strcmp(port,port1)){
+            aiprev->ai_next = ainext;
+            free(ai);
+            free(port1);
+        } else {
+            if (port1)
+                free(port1);
+            aiprev = ai;
+        }
+    }
+}
 
 /*
  * Close all listening sockets
@@ -942,6 +998,7 @@
 	int ret, listen_sock, on = 1;
 	struct addrinfo *ai;
 	char ntop[NI_MAXHOST], strport[NI_MAXSERV];
+	char *port;
 
 	for (ai = options.listen_addrs; ai; ai = ai->ai_next) {
 		if (ai->ai_family != AF_INET && ai->ai_family != AF_INET6)
@@ -987,6 +1044,13 @@
 			continue;
 		}
 		listen_socks[num_listen_socks] = listen_sock;
+
+		port = isaddr(ai,"::");
+		if (port) {
+			remove_duplicities(ai, port);
+			free(port);
+		}
+
 		num_listen_socks++;
 
 		/* Start listening on the port. */

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File openssh-4.7p1-addrlist.dif of Package openssh (Revision 7f2485d197cb62410c9f3f4b52ae6aa3)

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