This compiles, but isnt tested yet. DO NOT USE.

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@5907 e03df62e-2008-0410-955e-edbf42e46eb7

1 files changed, 231 insertions, 0 deletions

diff --git a/src/modules/extra/m_ziplink.cpp b/src/modules/extra/m_ziplink.cpp
new file mode 100644
index 000000000..8b65ddaed
--- /dev/null
+++ b/src/modules/extra/m_ziplink.cpp
@@ -0,0 +1,231 @@
+#include <string>
+#include <vector>
+
+#include "zlib.h"
+
+#include "inspircd_config.h"
+#include "configreader.h"
+#include "users.h"
+#include "channels.h"
+#include "modules.h"
+
+#include "socket.h"
+#include "hashcomp.h"
+#include "inspircd.h"
+
+#include "ssl.h"
+
+/* $ModDesc: Provides zlib link support for servers */
+/* $LinkerFlags: -lz */
+/* $ModDep: ssl.h */
+
+
+enum izip_status { IZIP_WAITFIRST, IZIP_OPEN, IZIP_CLOSED };
+
+const unsigned int CHUNK = 16384;
+
+/** Represents an ZIP user's extra data
+ */
+class izip_session : public classbase
+{
+ public:
+	z_stream c_stream; /* compression stream */
+	z_stream d_stream; /* decompress stream */
+	izip_status status;
+	int fd;
+};
+
+class ModuleZLib : public Module
+{
+	izip_session sessions[MAX_DESCRIPTORS];
+	
+ public:
+	
+	ModuleZLib(InspIRCd* Me)
+		: Module::Module(Me)
+	{
+		ServerInstance->PublishInterface("InspSocketHook", this);
+	}
+	
+	virtual ~ModuleZLib()
+	{
+	}
+
+	virtual Version GetVersion()
+	{
+		return Version(1, 1, 0, 0, VF_VENDOR, API_VERSION);
+	}
+
+	void Implements(char* List)
+	{
+		List[I_OnRawSocketConnect] = List[I_OnRawSocketAccept] = List[I_OnRawSocketClose] = List[I_OnRawSocketRead] = List[I_OnRawSocketWrite] = 1;
+		List[I_OnRequest] = 1;
+	}
+
+        virtual char* OnRequest(Request* request)
+	{
+		ISHRequest* ISR = (ISHRequest*)request;
+		if (strcmp("IS_NAME", request->GetId()) == 0)
+		{
+			return "gnutls";
+		}
+		else if (strcmp("IS_HOOK", request->GetId()) == 0)
+		{
+			return ServerInstance->Config->AddIOHook((Module*)this, (InspSocket*)ISR->Sock) ? (char*)"OK" : NULL;
+		}
+		else if (strcmp("IS_UNHOOK", request->GetId()) == 0)
+		{
+			return ServerInstance->Config->DelIOHook((InspSocket*)ISR->Sock) ? (char*)"OK" : NULL;
+		}
+		else if (strcmp("IS_HSDONE", request->GetId()) == 0)
+		{
+			return "OK";
+		}
+		else if (strcmp("IS_ATTACH", request->GetId()) == 0)
+		{
+			return NULL;
+		}
+		return NULL;
+	}
+
+
+	virtual void OnRawSocketAccept(int fd, const std::string &ip, int localport)
+	{
+		izip_session* session = &sessions[fd];
+	
+		/* allocate deflate state */
+		session->fd = fd;
+		session->status = IZIP_WAITFIRST;
+
+		session->c_stream.zalloc = (alloc_func)0;
+		session->c_stream.zfree = (free_func)0;
+		session->c_stream.opaque = (voidpf)0;
+
+	        if (deflateInit(&session->c_stream, Z_DEFAULT_COMPRESSION) != Z_OK)
+			return;
+
+		session->d_stream.zalloc = (alloc_func)0;
+		session->d_stream.zfree = (free_func)0;
+		session->d_stream.opaque = (voidpf)0;
+
+		if (deflateInit(&session->d_stream, Z_DEFAULT_COMPRESSION) != Z_OK)
+			return;
+	}
+
+	virtual void OnRawSocketConnect(int fd)
+	{
+		OnRawSocketAccept(fd, "", 0);
+	}
+
+	virtual void OnRawSocketClose(int fd)
+	{
+		CloseSession(&sessions[fd]);
+	}
+	
+	virtual int OnRawSocketRead(int fd, char* buffer, unsigned int count, int &readresult)
+	{
+		izip_session* session = &sessions[fd];
+
+		if (session->status == IZIP_CLOSED)
+			return 1;
+
+		readresult = read(fd, buffer, count);
+
+		if (readresult > 0)
+		{
+			unsigned char uncompr[count];
+
+			if(session->status != IZIP_WAITFIRST)
+			{
+				session->d_stream.next_in  = (Bytef*)buffer;
+				session->d_stream.avail_in = 0;
+				session->d_stream.next_out = uncompr;
+				if (inflateInit(&session->d_stream) != Z_OK)
+					return -EBADF;
+				session->status = IZIP_OPEN;
+			}
+
+			while ((session->d_stream.total_out < count) && (session->d_stream.total_in < (unsigned int)readresult))
+			{
+				session->d_stream.avail_in = session->d_stream.avail_out = 1; /* force small buffers */
+				if (inflate(&session->d_stream, Z_NO_FLUSH) == Z_STREAM_END)
+					break;
+			}
+
+			readresult = session->d_stream.total_out;
+		}
+		return (readresult > 0);
+	}
+
+	virtual int OnRawSocketWrite(int fd, const char* buffer, int count)
+	{
+		if (!count)
+			return 0;
+
+		unsigned char compr[count*2];
+
+		izip_session* session = &sessions[fd];
+
+		if(session->status != IZIP_WAITFIRST)
+		{
+			deflateInit(&session->c_stream, Z_DEFAULT_COMPRESSION);
+			session->status = IZIP_OPEN;
+		}
+
+		if(session->status != IZIP_OPEN)
+			return 1;
+
+		session->c_stream.next_in  = (Bytef*)buffer;
+		session->c_stream.next_out = compr;
+
+		while ((session->c_stream.total_in < (unsigned int)count) && (session->c_stream.total_out < (unsigned int)count*2))
+		{
+			session->c_stream.avail_in = session->c_stream.avail_out = 1; /* force small buffers */
+			if (deflate(&session->c_stream, Z_NO_FLUSH) != Z_OK)
+				return 0;
+		}
+	        /* Finish the stream, still forcing small buffers: */
+		for (;;)
+		{
+			session->c_stream.avail_out = 1;
+			if (deflate(&session->c_stream, Z_FINISH) == Z_STREAM_END)
+				break;
+		}
+
+		return write(fd, compr, session->c_stream.total_out);
+	}
+	
+	void CloseSession(izip_session* session)
+	{
+		if(session->status == IZIP_OPEN)
+		{
+			deflateEnd(&session->c_stream);
+			inflateEnd(&session->d_stream);
+		}
+		session->status = IZIP_CLOSED;
+	}
+
+};
+
+class ModuleZLibFactory : public ModuleFactory
+{
+ public:
+	ModuleZLibFactory()
+	{
+	}
+	
+	~ModuleZLibFactory()
+	{
+	}
+	
+	virtual Module * CreateModule(InspIRCd* Me)
+	{
+		return new ModuleZLib(Me);
+	}
+};
+
+
+extern "C" void * init_module( void )
+{
+	return new ModuleZLibFactory;
+}