Add Base64 encode/decode functions to the core

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@12507 e03df62e-2008-0410-955e-edbf42e46eb7

1 files changed, 0 insertions, 370 deletions

diff --git a/src/modules/extra/m_ziplink.cpp b/src/modules/extra/m_ziplink.cpp
deleted file mode 100644
index 391ba7583..000000000
--- a/src/modules/extra/m_ziplink.cpp
+++ /dev/null
@@ -1,370 +0,0 @@
-/*       +------------------------------------+
- *       | Inspire Internet Relay Chat Daemon |
- *       +------------------------------------+
- *
- *  InspIRCd: (C) 2002-2010 InspIRCd Development Team
- * See: http://wiki.inspircd.org/Credits
- *
- * This program is free but copyrighted software; see
- *            the file COPYING for details.
- *
- * ---------------------------------------------------
- */
-
-#include "inspircd.h"
-#include <zlib.h>
-#include <iostream>
-
-/* $ModDesc: Provides zlib link support for servers */
-/* $LinkerFlags: -lz */
-
-/*
- * ZLIB_BEST_COMPRESSION (9) is used for all sending of data with
- * a flush after each chunk. A frame may contain multiple lines
- * and should be treated as raw binary data.
- */
-
-/* Status of a connection */
-enum izip_status { IZIP_CLOSED = 0, IZIP_OPEN };
-
-/** Represents an zipped connections extra data
- */
-class izip_session
-{
- public:
-	z_stream c_stream;	/* compression stream */
-	z_stream d_stream;	/* uncompress stream */
-	izip_status status;	/* Connection status */
-	std::string outbuf;	/* Holds output buffer (compressed) */
-	std::string inbuf;	/* Holds input buffer (compressed) */
-};
-
-class ModuleZLib : public Module
-{
-	izip_session* sessions;
-
-	/* Used for stats z extensions */
-	float total_out_compressed;
-	float total_in_compressed;
-	float total_out_uncompressed;
-	float total_in_uncompressed;
-
-	/* Used for reading data from the wire and compressing data to. */
-	char *net_buffer;
-	unsigned int net_buffer_size;
- public:
-
-	ModuleZLib()
-	{
-		sessions = new izip_session[ServerInstance->SE->GetMaxFds()];
-		for (int i = 0; i < ServerInstance->SE->GetMaxFds(); i++)
-			sessions[i].status = IZIP_CLOSED;
-
-		total_out_compressed = total_in_compressed = 0;
-		total_out_uncompressed = total_in_uncompressed = 0;
-		Implementation eventlist[] = { I_OnStats };
-		ServerInstance->Modules->Attach(eventlist, this, 1);
-
-		// Allocate a buffer which is used for reading and writing data
-		net_buffer_size = ServerInstance->Config->NetBufferSize;
-		net_buffer = new char[net_buffer_size];
-	}
-
-	~ModuleZLib()
-	{
-		delete[] sessions;
-		delete[] net_buffer;
-	}
-
-	Version GetVersion()
-	{
-		return Version("Provides zlib link support for servers", VF_VENDOR);
-	}
-
-	/* Handle stats z (misc stats) */
-	ModResult OnStats(char symbol, User* user, string_list &results)
-	{
-		if (symbol == 'z')
-		{
-			std::string sn = ServerInstance->Config->ServerName;
-
-			/* Yeah yeah, i know, floats are ew.
-			 * We used them here because we'd be casting to float anyway to do this maths,
-			 * and also only floating point numbers can deal with the pretty large numbers
-			 * involved in the total throughput of a server over a large period of time.
-			 * (we dont count 64 bit ints because not all systems have 64 bit ints, and floats
-			 * can still hold more.
-			 */
-			float outbound_r = (total_out_compressed / (total_out_uncompressed + 0.001)) * 100;
-			float inbound_r = (total_in_compressed / (total_in_uncompressed + 0.001)) * 100;
-
-			float total_compressed = total_in_compressed + total_out_compressed;
-			float total_uncompressed = total_in_uncompressed + total_out_uncompressed;
-
-			float total_r = (total_compressed / (total_uncompressed + 0.001)) * 100;
-
-			char outbound_ratio[MAXBUF], inbound_ratio[MAXBUF], combined_ratio[MAXBUF];
-
-			sprintf(outbound_ratio, "%3.2f%%", outbound_r);
-			sprintf(inbound_ratio, "%3.2f%%", inbound_r);
-			sprintf(combined_ratio, "%3.2f%%", total_r);
-
-			results.push_back(sn+" 304 "+user->nick+" :ZIPSTATS outbound_compressed   = "+ConvToStr(total_out_compressed));
-			results.push_back(sn+" 304 "+user->nick+" :ZIPSTATS inbound_compressed    = "+ConvToStr(total_in_compressed));
-			results.push_back(sn+" 304 "+user->nick+" :ZIPSTATS outbound_uncompressed = "+ConvToStr(total_out_uncompressed));
-			results.push_back(sn+" 304 "+user->nick+" :ZIPSTATS inbound_uncompressed  = "+ConvToStr(total_in_uncompressed));
-			results.push_back(sn+" 304 "+user->nick+" :ZIPSTATS percentage_of_original_outbound_traffic        = "+outbound_ratio);
-			results.push_back(sn+" 304 "+user->nick+" :ZIPSTATS percentage_of_orignal_inbound_traffic         = "+inbound_ratio);
-			results.push_back(sn+" 304 "+user->nick+" :ZIPSTATS total_size_of_original_traffic        = "+combined_ratio);
-			return MOD_RES_PASSTHRU;
-		}
-
-		return MOD_RES_PASSTHRU;
-	}
-
-	void OnStreamSocketConnect(StreamSocket* user)
-	{
-		OnStreamSocketAccept(user, 0, 0);
-	}
-
-	void OnRawSocketAccept(StreamSocket* user, irc::sockets::sockaddrs*, irc::sockets::sockaddrs*)
-	{
-		int fd = user->GetFd();
-
-		izip_session* session = &sessions[fd];
-
-		/* Just in case... */
-		session->outbuf.clear();
-
-		session->c_stream.zalloc = (alloc_func)0;
-		session->c_stream.zfree = (free_func)0;
-		session->c_stream.opaque = (voidpf)0;
-
-		session->d_stream.zalloc = (alloc_func)0;
-		session->d_stream.zfree = (free_func)0;
-		session->d_stream.opaque = (voidpf)0;
-
-		/* If we cant call this, well, we're boned. */
-		if (inflateInit(&session->d_stream) != Z_OK)
-		{
-			session->status = IZIP_CLOSED;
-			return;
-		}
-
-		/* Same here */
-		if (deflateInit(&session->c_stream, Z_BEST_COMPRESSION) != Z_OK)
-		{
-			inflateEnd(&session->d_stream);
-			session->status = IZIP_CLOSED;
-			return;
-		}
-
-		/* Just in case, do this last */
-		session->status = IZIP_OPEN;
-	}
-
-	void OnStreamSocketClose(StreamSocket* user)
-	{
-		int fd = user->GetFd();
-		CloseSession(&sessions[fd]);
-	}
-
-	int OnStreamSocketRead(StreamSocket* user, std::string& recvq)
-	{
-		int fd = user->GetFd();
-		/* Find the sockets session */
-		izip_session* session = &sessions[fd];
-
-		if (session->status == IZIP_CLOSED)
-			return -1;
-
-		if (session->inbuf.empty())
-		{
-			/* Read read_buffer_size bytes at a time to the buffer (usually 2.5k) */
-			int readresult = read(fd, net_buffer, net_buffer_size);
-
-			if (readresult < 0)
-			{
-				if (errno == EINTR || errno == EAGAIN)
-					return 0;
-			}
-			if (readresult <= 0)
-				return -1;
-
-			total_in_compressed += readresult;
-
-			/* Copy the compressed data into our input buffer */
-			session->inbuf.append(net_buffer, readresult);
-		}
-
-		size_t in_len = session->inbuf.length();
-		char* buffer = ServerInstance->GetReadBuffer();
-		int count = ServerInstance->Config->NetBufferSize;
-
-		/* Prepare decompression */
-		session->d_stream.next_in = (Bytef *)session->inbuf.c_str();
-		session->d_stream.avail_in = in_len;
-
-		session->d_stream.next_out = (Bytef*)buffer;
-		/* Last byte is reserved for NULL terminating that beast */
-		session->d_stream.avail_out = count - 1;
-
-		/* Z_SYNC_FLUSH: Do as much as possible */
-		int ret = inflate(&session->d_stream, Z_SYNC_FLUSH);
-		/* TODO CloseStream() in here at random places */
-		switch (ret)
-		{
-			case Z_NEED_DICT:
-			case Z_STREAM_ERROR:
-				/* This is one of the 'not supposed to happen' things.
-				 * Memory corruption, anyone?
-				 */
-				Error(session, "General Error. This is not supposed to happen :/");
-				break;
-			case Z_DATA_ERROR:
-				Error(session, "Decompression failed, malformed data");
-				break;
-			case Z_MEM_ERROR:
-				Error(session, "Out of memory");
-				break;
-			case Z_BUF_ERROR:
-				/* This one is non-fatal, buffer is just full
-				 * (can't happen here).
-				 */
-				Error(session, "Internal error. This is not supposed to happen.");
-				break;
-			case Z_STREAM_END:
-				/* This module *never* generates these :/ */
-				Error(session, "End-of-stream marker received");
-				break;
-			case Z_OK:
-				break;
-			default:
-				/* NO WAI! This can't happen. All errors are handled above. */
-				Error(session, "Unknown error");
-				break;
-		}
-		if (ret != Z_OK)
-		{
-			return -1;
-		}
-
-		/* Update the inbut buffer */
-		unsigned int input_compressed = in_len - session->d_stream.avail_in;
-		session->inbuf = session->inbuf.substr(input_compressed);
-
-		/* Update counters (Old size - new size) */
-		unsigned int uncompressed_length = (count - 1) - session->d_stream.avail_out;
-		total_in_uncompressed += uncompressed_length;
-
-		/* Null-terminate the buffer -- this doesnt harm binary data */
-		recvq.append(buffer, uncompressed_length);
-		return 1;
-	}
-
-	int OnStreamSocketWrite(StreamSocket* user, std::string& sendq)
-	{
-		int fd = user->GetFd();
-		izip_session* session = &sessions[fd];
-
-		if(session->status != IZIP_OPEN)
-			/* Seriously, wtf? */
-			return -1;
-
-		int ret;
-
-		/* This loop is really only supposed to run once, but in case 'compr'
-		 * is filled up somehow we are prepared to handle this situation.
-		 */
-		unsigned int offset = 0;
-		do
-		{
-			/* Prepare compression */
-			session->c_stream.next_in = (Bytef*)sendq.data() + offset;
-			session->c_stream.avail_in = sendq.length() - offset;
-
-			session->c_stream.next_out = (Bytef*)net_buffer;
-			session->c_stream.avail_out = net_buffer_size;
-
-			/* Compress the text */
-			ret = deflate(&session->c_stream, Z_SYNC_FLUSH);
-			/* TODO CloseStream() in here at random places */
-			switch (ret)
-			{
-				case Z_OK:
-					break;
-				case Z_BUF_ERROR:
-					/* This one is non-fatal, buffer is just full
-					 * (can't happen here).
-					 */
-					Error(session, "Internal error. This is not supposed to happen.");
-					break;
-				case Z_STREAM_ERROR:
-					/* This is one of the 'not supposed to happen' things.
-					 * Memory corruption, anyone?
-					 */
-					Error(session, "General Error. This is also not supposed to happen.");
-					break;
-				default:
-					Error(session, "Unknown error");
-					break;
-			}
-
-			if (ret != Z_OK)
-				return 0;
-
-			/* Space before - space after stuff was added to this */
-			unsigned int compressed = net_buffer_size - session->c_stream.avail_out;
-			unsigned int uncompressed = sendq.length() - session->c_stream.avail_in;
-
-			/* Make it skip the data which was compressed already */
-			offset += uncompressed;
-
-			/* Update stats */
-			total_out_uncompressed += uncompressed;
-			total_out_compressed += compressed;
-
-			/* Add compressed to the output buffer */
-			session->outbuf.append((const char*)net_buffer, compressed);
-		} while (session->c_stream.avail_in != 0);
-
-		/* Lets see how much we can send out */
-		ret = write(fd, session->outbuf.data(), session->outbuf.length());
-
-		/* Check for errors, and advance the buffer if any was sent */
-		if (ret > 0)
-			session->outbuf = session->outbuf.substr(ret);
-		else if (ret < 1)
-		{
-			if (errno == EAGAIN)
-				return 0;
-			else
-			{
-				session->outbuf.clear();
-				return -1;
-			}
-		}
-
-		return 1;
-	}
-
-	void Error(izip_session* session, const std::string &text)
-	{
-		ServerInstance->SNO->WriteToSnoMask('l', "ziplink error: " + text);
-	}
-
-	void CloseSession(izip_session* session)
-	{
-		if (session->status == IZIP_OPEN)
-		{
-			session->status = IZIP_CLOSED;
-			session->outbuf.clear();
-			inflateEnd(&session->d_stream);
-			deflateEnd(&session->c_stream);
-		}
-	}
-
-};
-
-MODULE_INIT(ModuleZLib)
-