88 lines
1.9 KiB
Plaintext
88 lines
1.9 KiB
Plaintext
--- sshd.c
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+++ sshd.c
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@@ -253,6 +253,62 @@
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static void do_ssh1_kex(void);
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static void do_ssh2_kex(void);
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+char * isaddr(struct addrinfo *addr, char *name);
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+void remove_duplicities(struct addrinfo *addr, char *port);
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+
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+/*
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+ * returns port if addr equals name
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+ */
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+
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+char*
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+isaddr(struct addrinfo *addr, char *name)
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+{
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+ char ntop[NI_MAXHOST];
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+ char *strport;
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+
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+ strport = (char*) malloc(NI_MAXSERV+1);
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+ if (getnameinfo(addr->ai_addr, addr->ai_addrlen,
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+ ntop, sizeof(ntop), strport, sizeof(strport),
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+ NI_NUMERICHOST|NI_NUMERICSERV) != 0) {
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+ error("getnameinfo failed");
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+ free(strport);
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+ return NULL;
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+ }
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+ if (!strcmp(ntop,name))
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+ return strport;
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+ else{
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+ free(strport);
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+ return NULL;
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+ }
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+
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+}
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+
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+/*
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+ * it removes all "0.0.0.0" elements with given port
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+ * from the list
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+ */
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+
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+void
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+remove_duplicities(struct addrinfo *ai_start, char *port)
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+{
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+ struct addrinfo *ai, *ai1, *aiprev, *ainext;
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+ char *port1;
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+
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+ aiprev=ai_start;
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+ for (ai = ai_start->ai_next; ai; ai = ainext) {
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+ ainext = ai->ai_next;
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+ port1 = isaddr(ai, "0.0.0.0");
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+ if (port1 && !strcmp(port,port1)){
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+ aiprev->ai_next = ainext;
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+ free(ai);
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+ free(port1);
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+ } else {
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+ if (port1)
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+ free(port1);
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+ aiprev = ai;
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+ }
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+ }
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+}
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/*
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* Close all listening sockets
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@@ -941,6 +997,7 @@
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int ret, listen_sock, on = 1;
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struct addrinfo *ai;
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char ntop[NI_MAXHOST], strport[NI_MAXSERV];
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+ char *port;
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for (ai = options.listen_addrs; ai; ai = ai->ai_next) {
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if (ai->ai_family != AF_INET && ai->ai_family != AF_INET6)
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@@ -986,6 +1043,13 @@
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continue;
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}
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listen_socks[num_listen_socks] = listen_sock;
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+
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+ port = isaddr(ai,"::");
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+ if (port) {
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+ remove_duplicities(ai, port);
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+ free(port);
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+ }
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+
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num_listen_socks++;
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/* Start listening on the port. */
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