Add a listen statement to listen on only specific IP addresses, in addition to the...

[cubemap] / config.cpp

diff --git a/config.cpp b/config.cpp
index f5182aac1512e9b8307ac57d16ada0b639260257..e7c9c844d1ab4ffd5f24cd9f7fcf493b2f8ecf8e 100644 (file)
--- a/config.cpp
+++ b/config.cpp
@@ -11,6 +11,7 @@
 #include <utility>
 #include <vector>
 
+#include "acceptor.h"
 #include "config.h"
 #include "log.h"
 #include "parse.h"
@@ -119,12 +120,80 @@ bool parse_port(const ConfigLine &line, Config *config)
                return false;
        }
 
+       int port = atoi(line.arguments[0].c_str());
+       if (port < 1 || port >= 65536) {
+               log(ERROR, "port %d is out of range (must be [1,65536>).", port);
+               return false;
+       }
+
+       AcceptorConfig acceptor;
+       acceptor.addr = CreateAnyAddress(port);
+
+       config->acceptors.push_back(acceptor);
+       return true;
+}
+
+bool parse_listen(const ConfigLine &line, Config *config)
+{
+       if (line.arguments.size() != 1) {
+               log(ERROR, "'listen' takes exactly one argument");
+               return false;
+       }
+
+       string addr_string = line.arguments[0];
+       if (addr_string.empty()) {
+               // Actually, this should never happen.
+               log(ERROR, "'listen' argument cannot be empty");
+               return false;
+       }
+
+       string port_string;
+
        AcceptorConfig acceptor;
-       acceptor.port = atoi(line.arguments[0].c_str());
-       if (acceptor.port < 1 || acceptor.port >= 65536) {
-               log(ERROR, "port %d is out of range (must be [1,65536>).", acceptor.port);
+       memset(&acceptor.addr, 0, sizeof(acceptor.addr));
+       acceptor.addr.sin6_family = AF_INET6;
+       if (addr_string[0] == '[') {
+               // IPv6 address: [addr]:port.
+               size_t addr_end = addr_string.find("]:");
+               if (addr_end == string::npos) {
+                       log(ERROR, "IPv6 address '%s' should be on form [address]:port", addr_string.c_str());
+                       return false;
+               }
+
+               string addr_only = addr_string.substr(1, addr_end - 1);
+               if (inet_pton(AF_INET6, addr_only.c_str(), &acceptor.addr.sin6_addr) != 1) {
+                       log(ERROR, "Invalid IPv6 address '%s'", addr_only.c_str());
+                       return false;
+               }
+
+               port_string = addr_string.substr(addr_end + 2);
+       } else {
+               // IPv4 address: addr:port.
+               size_t addr_end = addr_string.find(":");
+               if (addr_end == string::npos) {
+                       log(ERROR, "IPv4 address '%s' should be on form address:port", addr_string.c_str());
+                       return false;
+               }
+
+               in_addr addr4;
+               string addr_only = addr_string.substr(0, addr_end);
+               if (inet_pton(AF_INET, addr_only.c_str(), &addr4) != 1) {
+                       log(ERROR, "Invalid IPv4 address '%s'", addr_only.c_str());
+                       return false;
+               }
+
+               // Convert to a v4-mapped address.
+               acceptor.addr.sin6_addr.s6_addr32[2] = htonl(0xffff);
+               acceptor.addr.sin6_addr.s6_addr32[3] = addr4.s_addr;
+               port_string = addr_string.substr(addr_end + 1);
+       }
+
+       int port = atoi(port_string.c_str());
+       if (port < 1 || port >= 65536) {
+               log(ERROR, "port %d is out of range (must be [1,65536>).", port);
                return false;
        }
+       acceptor.addr.sin6_port = ntohs(port);
 
        config->acceptors.push_back(acceptor);
        return true;
@@ -423,6 +492,10 @@ bool parse_config(const string &filename, Config *config)
                        if (!parse_port(line, config)) {
                                return false;
                        }
+               } else if (line.keyword == "listen") {
+                       if (!parse_listen(line, config)) {
+                               return false;
+                       }
                } else if (line.keyword == "stream") {
                        if (!parse_stream(line, config)) {
                                return false;