Add UPnP support (port forwarding, querying external IP)

1 files changed, 172 insertions, 0 deletions

diff --git a/thirdparty/miniupnpc/portlistingparse.c b/thirdparty/miniupnpc/portlistingparse.c
new file mode 100644
index 0000000000..55859f2714
--- /dev/null
+++ b/thirdparty/miniupnpc/portlistingparse.c
@@ -0,0 +1,172 @@
+/* $Id: portlistingparse.c,v 1.9 2015/07/15 12:41:13 nanard Exp $ */
+/* MiniUPnP project
+ * http://miniupnp.free.fr/ or http://miniupnp.tuxfamily.org/
+ * (c) 2011-2016 Thomas Bernard
+ * This software is subject to the conditions detailed
+ * in the LICENCE file provided within the distribution */
+#include <string.h>
+#include <stdlib.h>
+#ifdef DEBUG
+#include <stdio.h>
+#endif /* DEBUG */
+#include "portlistingparse.h"
+#include "minixml.h"
+
+/* list of the elements */
+static const struct {
+	const portMappingElt code;
+	const char * const str;
+} elements[] = {
+	{ PortMappingEntry, "PortMappingEntry"},
+	{ NewRemoteHost, "NewRemoteHost"},
+	{ NewExternalPort, "NewExternalPort"},
+	{ NewProtocol, "NewProtocol"},
+	{ NewInternalPort, "NewInternalPort"},
+	{ NewInternalClient, "NewInternalClient"},
+	{ NewEnabled, "NewEnabled"},
+	{ NewDescription, "NewDescription"},
+	{ NewLeaseTime, "NewLeaseTime"},
+	{ PortMappingEltNone, NULL}
+};
+
+/* Helper function */
+static UNSIGNED_INTEGER
+atoui(const char * p, int l)
+{
+	UNSIGNED_INTEGER r = 0;
+	while(l > 0 && *p)
+	{
+		if(*p >= '0' && *p <= '9')
+			r = r*10 + (*p - '0');
+		else
+			break;
+		p++;
+		l--;
+	}
+	return r;
+}
+
+/* Start element handler */
+static void
+startelt(void * d, const char * name, int l)
+{
+	int i;
+	struct PortMappingParserData * pdata = (struct PortMappingParserData *)d;
+	pdata->curelt = PortMappingEltNone;
+	for(i = 0; elements[i].str; i++)
+	{
+		if(strlen(elements[i].str) == (size_t)l && memcmp(name, elements[i].str, l) == 0)
+		{
+			pdata->curelt = elements[i].code;
+			break;
+		}
+	}
+	if(pdata->curelt == PortMappingEntry)
+	{
+		struct PortMapping * pm;
+		pm = calloc(1, sizeof(struct PortMapping));
+		if(pm == NULL)
+		{
+			/* malloc error */
+#ifdef DEBUG
+			fprintf(stderr, "%s: error allocating memory",
+			        "startelt");
+#endif /* DEBUG */
+			return;
+		}
+		pm->l_next = pdata->l_head;	/* insert in list */
+		pdata->l_head = pm;
+	}
+}
+
+/* End element handler */
+static void
+endelt(void * d, const char * name, int l)
+{
+	struct PortMappingParserData * pdata = (struct PortMappingParserData *)d;
+	(void)name;
+	(void)l;
+	pdata->curelt = PortMappingEltNone;
+}
+
+/* Data handler */
+static void
+data(void * d, const char * data, int l)
+{
+	struct PortMapping * pm;
+	struct PortMappingParserData * pdata = (struct PortMappingParserData *)d;
+	pm = pdata->l_head;
+	if(!pm)
+		return;
+	if(l > 63)
+		l = 63;
+	switch(pdata->curelt)
+	{
+	case NewRemoteHost:
+		memcpy(pm->remoteHost, data, l);
+		pm->remoteHost[l] = '\0';
+		break;
+	case NewExternalPort:
+		pm->externalPort = (unsigned short)atoui(data, l);
+		break;
+	case NewProtocol:
+		if(l > 3)
+			l = 3;
+		memcpy(pm->protocol, data, l);
+		pm->protocol[l] = '\0';
+		break;
+	case NewInternalPort:
+		pm->internalPort = (unsigned short)atoui(data, l);
+		break;
+	case NewInternalClient:
+		memcpy(pm->internalClient, data, l);
+		pm->internalClient[l] = '\0';
+		break;
+	case NewEnabled:
+		pm->enabled = (unsigned char)atoui(data, l);
+		break;
+	case NewDescription:
+		memcpy(pm->description, data, l);
+		pm->description[l] = '\0';
+		break;
+	case NewLeaseTime:
+		pm->leaseTime = atoui(data, l);
+		break;
+	default:
+		break;
+	}
+}
+
+
+/* Parse the PortMappingList XML document for IGD version 2
+ */
+void
+ParsePortListing(const char * buffer, int bufsize,
+                 struct PortMappingParserData * pdata)
+{
+	struct xmlparser parser;
+
+	memset(pdata, 0, sizeof(struct PortMappingParserData));
+	/* init xmlparser */
+	parser.xmlstart = buffer;
+	parser.xmlsize = bufsize;
+	parser.data = pdata;
+	parser.starteltfunc = startelt;
+	parser.endeltfunc = endelt;
+	parser.datafunc = data;
+	parser.attfunc = 0;
+	parsexml(&parser);
+}
+
+void
+FreePortListing(struct PortMappingParserData * pdata)
+{
+	struct PortMapping * pm;
+	while((pm = pdata->l_head) != NULL)
+	{
+		/* remove from list */
+		pdata->l_head = pm->l_next;
+		free(pm);
+	}
+}
+