Updated build system and now bundle libb64

.gitignore

@@ -12,8 +12,8 @@ illusion/*
 scripts/*
 logs/*
 *.a
-lua/lua
-lua/luac
+deps/lua/lua
+deps/lua/luac
 netmail.out
 echomail.out
 utils/magiedit/odoors/libs-*
@@ -23,3 +23,4 @@ utils/magiedit/magiedit
 msgserial
 whitelist.ip
 blacklist.ip
+.DS_Store

Makefile.freebsd

@@ -1,9 +1,20 @@
 CC=cc
-CFLAGS=-I/usr/local/include 
+CFLAGS=-I/usr/local/include -I./deps/
 DEPS = bbs.h
-JAMLIB = jamlib/jamlib.a
-ZMODEM = Xmodem/libzmodem.a
-LUA = lua/liblua.a
+JAMLIB = deps/jamlib/jamlib.a
+ZMODEM = deps/Xmodem/libzmodem.a
+LUA = deps/lua/liblua.a
+
+all: magicka
+
+${LUA}:
+	cd deps/lua && $(MAKE) -f Makefile freebsd MAKEFLAGS=
+ 
+${JAMLIB}:
+	cd deps/jamlib && $(MAKE) -f Makefile.linux MAKEFLAGS=
+ 
+${ZMODEM}:
+	cd deps/Xmodem && $(MAKE) MAKEFLAGS=
 
 OBJ = inih/ini.o bbs.o main.o users.o main_menu.o mail_menu.o doors.o bbs_list.o chat_system.o email.o files.o settings.o lua_glue.o strings.o bluewave.o hashmap/hashmap.o
 %.o: %.c $(DEPS)
@@ -16,3 +27,6 @@ magicka: $(OBJ)
 
 clean:
 	rm -f $(OBJ) magicka
+	cd deps/lua && $(MAKE) clean
+	cd deps/jamlib && $(MAKE) -f Makefile.linux clean
+	cd deps/Xmodem && $(MAKE) clean

Makefile.freebsd.WWW

@@ -1,19 +1,38 @@
 CC=cc
-CFLAGS=-I/usr/local/include -DENABLE_WWW=1
+CFLAGS=-I/usr/local/include -I./deps/ -DENABLE_WWW=1
 DEPS = bbs.h
-JAMLIB = jamlib/jamlib.a
-ZMODEM = Xmodem/libzmodem.a
-LUA = lua/liblua.a
-MICROHTTPD=-lmicrohttpd -lb64
+JAMLIB = deps/jamlib/jamlib.a
+ZMODEM = deps/Xmodem/libzmodem.a
+LUA = deps/lua/liblua.a
+B64 = deps/libb64-1.2/src/libb64.a
+MICROHTTPD=-lmicrohttpd 
+
+all: magicka
+
+${LUA}:
+	cd deps/lua && $(MAKE) -f Makefile freebsd MAKEFLAGS=
+
+${JAMLIB}:
+	cd deps/jamlib && $(MAKE) -f Makefile.linux MAKEFLAGS=
+
+${ZMODEM}:
+	cd deps/Xmodem && $(MAKE) MAKEFLAGS=
+
+${B64}: 
+	cd deps/libb64-1.2 && $(MAKE) MAKEFLAGS=
 
 OBJ = inih/ini.o bbs.o main.o users.o main_menu.o mail_menu.o doors.o bbs_list.o chat_system.o email.o files.o settings.o lua_glue.o strings.o bluewave.o www.o www_email.o www_msgs.o www_last10.o hashmap/hashmap.o
 %.o: %.c $(DEPS)
 	$(CC) -c -o $@ $< $(CFLAGS)
 
-magicka: $(OBJ)
-	$(CC) -o magicka -o $@ $^ $(CFLAGS) -L/usr/local/lib -lsqlite3 $(JAMLIB) $(ZMODEM) $(LUA) -lutil -lm -lssl -lcrypto -lssh $(MICROHTTPD)
+magicka: $(OBJ) ${LUA} ${ZMODEM} ${JAMLIB} ${B64}
+	$(CC) -o magicka -o $@ $^ $(CFLAGS) -L/usr/local/lib -lsqlite3 $(JAMLIB) $(ZMODEM) $(LUA) $(B64) -lutil -lm -lssl -lcrypto -lssh $(MICROHTTPD)
 
 .PHONY: clean
 
 clean:
 	rm -f $(OBJ) magicka
+	cd deps/lua && $(MAKE) clean
+	cd deps/jamlib && $(MAKE) -f Makefile.linux clean
+	cd deps/Xmodem && $(MAKE) clean
+	cd deps/libb64-1.2 && $(MAKE) clean

Makefile.linux

@@ -1,18 +1,33 @@
 CC=cc
-CFLAGS=-I/usr/local/include
+CFLAGS=-I/usr/local/include -I./deps/
 DEPS = bbs.h
-JAMLIB = jamlib/jamlib.a
-ZMODEM = Xmodem/libzmodem.a
-LUA = lua/liblua.a
+JAMLIB = deps/jamlib/jamlib.a
+ZMODEM = deps/Xmodem/libzmodem.a
+LUA = deps/lua/liblua.a
+
+
+all: magicka
+
+${LUA}: 
+	cd deps/lua && $(MAKE) -f Makefile linux MAKEFLAGS=
+
+${JAMLIB}:
+	cd deps/jamlib && $(MAKE) -f Makefile.linux MAKEFLAGS=
+
+${ZMODEM}:
+	cd deps/Xmodem && $(MAKE) MAKEFLAGS=
 
 OBJ = inih/ini.o bbs.o main.o users.o main_menu.o mail_menu.o doors.o bbs_list.o chat_system.o email.o files.o settings.o lua_glue.o strings.o bluewave.o hashmap/hashmap.o
 %.o: %.c $(DEPS)
 	$(CC) -c -o $@ $< $(CFLAGS)
 
-magicka: $(OBJ)
+magicka: $(OBJ) ${LUA} ${ZMODEM} ${JAMLIB}
 	$(CC) -o magicka -o $@ $^ $(CFLAGS) -L/usr/local/lib -lsqlite3 $(JAMLIB) $(ZMODEM) $(LUA) -lutil -lm -ldl -lssl -lcrypto -lssh
 
 .PHONY: clean
 
 clean:
 	rm -f $(OBJ) magicka
+	cd deps/lua && $(MAKE) clean
+	cd deps/jamlib && $(MAKE) -f Makefile.linux clean
+	cd deps/Xmodem && $(MAKE) clean

Makefile.linux.WWW

@@ -1,19 +1,40 @@
 CC=cc
-CFLAGS=-I/usr/local/include -DENABLE_WWW=1 
+CFLAGS=-I/usr/local/include -I./deps/ -DENABLE_WWW=1 
 DEPS = bbs.h
-JAMLIB = jamlib/jamlib.a
-ZMODEM = Xmodem/libzmodem.a
-LUA = lua/liblua.a
-MICROHTTPD=-lmicrohttpd -lb64
+JAMLIB = deps/jamlib/jamlib.a
+ZMODEM = deps/Xmodem/libzmodem.a
+LUA = deps/lua/liblua.a
+LUA = deps/libb64-1.2/src/libb64.a
+MICROHTTPD=-lmicrohttpd
+
+all: magicka
+
+${LUA}: 
+	cd deps/lua && $(MAKE) -f Makefile linux MAKEFLAGS=
+
+${JAMLIB}:
+	cd deps/jamlib && $(MAKE) -f Makefile.linux MAKEFLAGS=
+
+${ZMODEM}:
+	cd deps/Xmodem && $(MAKE) MAKEFLAGS=
+
+${B64}: 
+	cd deps/libb64-1.2 && $(MAKE) MAKEFLAGS=
+
 
 OBJ = inih/ini.o bbs.o main.o users.o main_menu.o mail_menu.o doors.o bbs_list.o chat_system.o email.o files.o settings.o lua_glue.o strings.o www.o www_email.o www_msgs.o www_last10.o bluewave.o hashmap/hashmap.o
 %.o: %.c $(DEPS)
 	$(CC) -c -o $@ $< $(CFLAGS)
 
-magicka: $(OBJ)
-	$(CC) -o magicka -o $@ $^ $(CFLAGS) -L/usr/local/lib -lsqlite3 $(JAMLIB) $(ZMODEM) $(LUA) -lutil -lm -ldl -lssl -lcrypto -lssh  $(MICROHTTPD)
+magicka: $(OBJ) ${LUA} ${JAMLIB} ${ZMODEM} ${B64}
+	$(CC) -o magicka -o $@ $^ $(CFLAGS) -L/usr/local/lib -lsqlite3 $(JAMLIB) $(ZMODEM) $(LUA) $(B64) -lutil -lm -ldl -lssl -lcrypto -lssh  $(MICROHTTPD)
 
 .PHONY: clean
 
 clean:
 	rm -f $(OBJ) magicka
+	cd deps/lua && $(MAKE) clean
+	cd deps/jamlib && $(MAKE) -f Makefile.linux clean
+	cd deps/Xmodem && $(MAKE) clean
+	cd deps/libb64-1.2 && $(MAKE) clean
+

Makefile.minix

@@ -1,18 +0,0 @@
-CC=clang
-CFLAGS=-I/usr/pkg/include
-DEPS = bbs.h
-JAMLIB = jamlib/jamlib.a
-ZMODEM = Xmodem/libzmodem.a
-LUA = lua/liblua.a
-
-OBJ = inih/ini.o bbs.o main.o users.o main_menu.o mail_menu.o doors.o bbs_list.o chat_system.o email.o files.o settings.o lua_glue.o strings.o
-%.o: %.c $(DEPS)
-	$(CC) -c -o $@ $< $(CFLAGS)
-
-magicka: $(OBJ)
-	$(CC) -o magicka -o $@ $^ $(CFLAGS) -L/usr/pkg/lib -lsqlite3 $(JAMLIB) $(ZMODEM) $(LUA) -lutil -lm -lssl -lcrypto -lssh
-
-.PHONY: clean
-
-clean:
-	rm -f $(OBJ) magicka

Makefile.osx

@@ -1,18 +1,33 @@
 CC=cc
-CFLAGS=-I/opt/local/include
+CFLAGS=-I/opt/local/include -I./deps/
 DEPS = bbs.h
-JAMLIB = jamlib/jamlib.a
-ZMODEM = Xmodem/libzmodem.a
-LUA = lua/liblua.a
+JAMLIB = deps/jamlib/jamlib.a
+ZMODEM = deps/Xmodem/libzmodem.a
+LUA = deps/lua/liblua.a
 
 OBJ = inih/ini.o bbs.o main.o users.o main_menu.o mail_menu.o doors.o bbs_list.o chat_system.o email.o files.o settings.o lua_glue.o strings.o bluewave.o hashmap/hashmap.o
+
+all: magicka
+
+${LUA}:
+	cd deps/lua && $(MAKE) -f Makefile macosx MAKEFLAGS=
+
+${JAMLIB}:
+	cd deps/jamlib && $(MAKE) -f Makefile.linux MAKEFLAGS=
+
+${ZMODEM}:
+	cd deps/Xmodem && $(MAKE) MAKEFLAGS=
+
 %.o: %.c $(DEPS)
 	$(CC) -c -o $@ $< $(CFLAGS)
 
-magicka: $(OBJ)
+magicka: $(OBJ) ${LUA} ${ZMODEM} ${JAMLIB}
 	$(CC) -o magicka -o $@ $^ $(CFLAGS) -L/opt/local/lib -lsqlite3 $(JAMLIB) $(ZMODEM) $(LUA) -lutil -lm -ldl -lssl -lcrypto -lssh
 
 .PHONY: clean
 
 clean:
 	rm -f $(OBJ) magicka
+	cd deps/lua && $(MAKE) clean
+	cd deps/jamlib && $(MAKE) -f Makefile.linux clean
+	cd deps/Xmodem && $(MAKE) clean

Makefile.osx.WWW

@@ -1,19 +1,38 @@
 CC=cc
-CFLAGS=-I/opt/local/include -DENABLE_WWW=1
+CFLAGS=-I/opt/local/include -I./deps/ -DENABLE_WWW=1
 DEPS = bbs.h
-JAMLIB = jamlib/jamlib.a
-ZMODEM = Xmodem/libzmodem.a
-LUA = lua/liblua.a
-MICROHTTPD=-lmicrohttpd -lb64
+JAMLIB = deps/jamlib/jamlib.a
+ZMODEM = deps/Xmodem/libzmodem.a
+LUA = deps/lua/liblua.a
+B64 = deps/libb64-1.2/src/libb64.a
+MICROHTTPD=-lmicrohttpd 
+
+
+all: magicka
+
+${LUA}: 
+	cd deps/lua && $(MAKE) -f Makefile macosx MAKEFLAGS=
+
+${JAMLIB}:
+	cd deps/jamlib && $(MAKE) -f Makefile.linux MAKEFLAGS=
+
+${ZMODEM}:
+	cd deps/Xmodem && $(MAKE) MAKEFLAGS=
+
+${B64}:
+	cd deps/libb64-1.2 && $(MAKE) MAKEFLAGS=
 
 OBJ = inih/ini.o bbs.o main.o users.o main_menu.o mail_menu.o doors.o bbs_list.o chat_system.o email.o files.o settings.o lua_glue.o strings.o www.o www_email.o www_msgs.o www_last10.o bluewave.o hashmap/hashmap.o
 %.o: %.c $(DEPS)
 	$(CC) -c -o $@ $< $(CFLAGS)
 
-magicka: $(OBJ)
-	$(CC) -o magicka -o $@ $^ $(CFLAGS) -L/opt/local/lib -lsqlite3 $(JAMLIB) $(ZMODEM) $(LUA) -lutil -lm -ldl -lssl -lcrypto -lssh $(MICROHTTPD)
+magicka: $(OBJ) ${LUA} ${ZMODEM} ${JAMLIB} ${B64}
+	$(CC) -o magicka -o $@ $^ $(CFLAGS) -L/opt/local/lib -lsqlite3 $(JAMLIB) $(ZMODEM) $(LUA) $(B64) -lutil -lm -ldl -lssl -lcrypto -lssh $(MICROHTTPD)
 
 .PHONY: clean
 
 clean:
 	rm -f $(OBJ) magicka
+	cd deps/lua && $(MAKE) clean
+	cd deps/jamlib && $(MAKE) -f Makefile.linux clean
+	cd deps/Xmodem && $(MAKE) clean

deps/libb64-1.2/AUTHORS

@@ -0,0 +1,7 @@
+libb64: Base64 Encoding/Decoding Routines
+======================================
+
+Authors:
+-------
+
+Chris Venter	chris.venter@gmail.com	http://rocketpod.blogspot.com

deps/libb64-1.2/BENCHMARKS

@@ -0,0 +1,85 @@
+-- Intro
+
+Some people have expressed opinions about how
+fast libb64's encoding and decoding routines
+are, as compared to some other BASE64 packages
+out there.
+
+This document shows the result of a short and sweet 
+benchmark, which takes a large-ish file and 
+encodes/decodes it a number of times.
+The winner is the executable that does this task the quickest.
+
+-- Platform
+
+The tests were all run on a Fujitsu-Siemens laptop,
+with a Pentium M processor running at 2GHz, with
+1GB of RAM, running Ubuntu 10.4.
+
+-- Packages
+
+The following BASE64 packages were used in this benchmark:
+
+- libb64-1.2 (libb64-base64)
+  From libb64.sourceforge.net
+  Size of executable: 18808 bytes
+  Compiled with:
+    CFLAGS += -O3
+    BUFFERSIZE = 16777216
+
+- base64-1.5 (fourmilab-base64)
+  From http://www.fourmilab.ch/webtools/base64/
+  Size of executable: 20261 bytes
+  Compiled with Default package settings
+
+- coreutils 7.4-2ubuntu2 (coreutils-base64)
+  From http://www.gnu.org/software/coreutils/
+  Size of executable: 38488 bytes
+  Default binary distributed with Ubuntu 10.4
+
+-- Input File
+
+Using blender-2.49b-linux-glibc236-py25-i386.tar.bz2
+from http://www.blender.org/download/get-blender/
+Size: 18285329 bytes
+(approx. 18MB)
+
+-- Method
+
+Encode and Decode the Input file 50 times in a loop,
+using a simple shell script, and get the running time.
+
+-- Results
+
+$ time ./benchmark-libb64.sh 
+real	0m28.389s
+user	0m14.077s
+sys	0m12.309s
+
+$ time ./benchmark-fourmilab.sh 
+real	1m43.160s
+user	1m23.769s
+sys	0m8.737s
+
+$ time ./benchmark-coreutils.sh 
+real	0m36.288s
+user	0m24.746s
+sys	0m8.181s
+
+28.389 for 18MB * 50
+= 28.389 for 900
+
+-- Conclusion
+
+libb64 is the fastest encoder/decoder, and 
+has the smallest executable size.
+
+On average it will encode and decode at roughly 31.7MB/second.
+
+The closest "competitor" is base64 from GNU coreutils, which
+reaches only 24.8MB/second.
+
+--
+14/06/2010
+chris.venter@gmail.com
+

deps/libb64-1.2/CHANGELOG

@@ -0,0 +1,25 @@
+libb64: Base64 Encoding/Decoding Routines
+======================================
+
+## Changelog ##
+
+Version 1.2 Release
+-------------------
+Removed the b64dec, b64enc, encoder and decoder programs in favour of
+a better example, called base64, which encodes and decodes 
+depending on its arguments.
+
+Created a solution for Microsoft Visual Studio C++ Express 2010
+edition, which simply builds the base64 example as a console application.
+
+Version 1.1 Release
+-------------------
+Modified encode.h to (correctly) read from the iostream argument,
+instead of std::cin.
+Thanks to Peter K. Lee for the heads-up.
+
+No API changes.
+
+Version 1.0 Release
+-------------------
+The current content is the changeset.

deps/libb64-1.2/INSTALL

@@ -0,0 +1,44 @@
+libb64: Base64 Encoding/Decoding Routines
+======================================
+
+Requirements:
+------------
+This piece of software has minimal requirements.
+
+I have tested it on the following systems:
+
+- a Linux machine, with the following specs:
+(this was the original development machine)
+	* FedoraCore 4
+	* kernel v. 2.6.11 (stock FC4 kernel)
+	* gcc version 4.0.1 20050727 (Red Hat 4.0.1-5)
+	* glibc-2.3.5-10
+	* make v. 3.80
+	* some arb version of makedepend
+
+- Windows XP machine
+	* MSYS 1.0
+	* MinGW 5.1.4
+	* gcc version 3.4.5 (mingw-vista special r3)
+
+- Windows XP machine (same as above)
+	* Microsoft Visual Studio 2010, Version 10.0.30319.1 RTMRel
+	
+Barring any serious screwups on my part, this code should compile and run sweetly
+under Cygwin and other systems too. If you DO get it running under some weird arch/os setup,
+send me a mail, please.
+
+Compiling:
+---------
+There is no configure. It would be overkill for something so simple...
+Run make in the root directory.
+
+Installing:
+----------
+Since the current targets are a standalone executable and a static library
+(fancy name for archive) with some headers, an install script has not been implemented yet.
+Simply copy the executable into your path, and use it.
+
+--
+peace out
+Chris

deps/libb64-1.2/LICENSE

@@ -0,0 +1,29 @@
+Copyright-Only Dedication (based on United States law) 
+or Public Domain Certification
+
+The person or persons who have associated work with this document (the
+"Dedicator" or "Certifier") hereby either (a) certifies that, to the best of
+his knowledge, the work of authorship identified is in the public domain of the
+country from which the work is published, or (b) hereby dedicates whatever
+copyright the dedicators holds in the work of authorship identified below (the
+"Work") to the public domain. A certifier, moreover, dedicates any copyright
+interest he may have in the associated work, and for these purposes, is
+described as a "dedicator" below.
+
+A certifier has taken reasonable steps to verify the copyright status of this
+work. Certifier recognizes that his good faith efforts may not shield him from
+liability if in fact the work certified is not in the public domain.
+
+Dedicator makes this dedication for the benefit of the public at large and to
+the detriment of the Dedicator's heirs and successors. Dedicator intends this
+dedication to be an overt act of relinquishment in perpetuity of all present
+and future rights under copyright law, whether vested or contingent, in the
+Work. Dedicator understands that such relinquishment of all rights includes
+the relinquishment of all rights to enforce (by lawsuit or otherwise) those
+copyrights in the Work.
+
+Dedicator recognizes that, once placed in the public domain, the Work may be
+freely reproduced, distributed, transmitted, used, modified, built upon, or
+otherwise exploited by anyone for any purpose, commercial or non-commercial,
+and in any way, including by methods that have not yet been invented or
+conceived.

deps/libb64-1.2/Makefile

@@ -0,0 +1,25 @@
+all: all_src all_base64
+
+all_src:
+	$(MAKE) -C src
+all_base64: all_src
+	$(MAKE) -C base64
+
+clean: clean_src clean_base64 clean_include
+	rm -f *~ *.bak
+
+clean_include:
+	rm -f include/b64/*~
+
+clean_src:
+	$(MAKE) -C src clean;
+clean_base64:
+	$(MAKE) -C base64 clean;
+	
+distclean: clean distclean_src distclean_base64
+
+distclean_src:
+	$(MAKE) -C src distclean;
+distclean_base64:
+	$(MAKE) -C base64 distclean;
+

deps/libb64-1.2/README

@@ -0,0 +1,138 @@
+b64: Base64 Encoding/Decoding Routines
+======================================
+
+Overview:
+--------
+libb64 is a library of ANSI C routines for fast encoding/decoding data into and
+from a base64-encoded format. C++ wrappers are included, as well as the source
+code for standalone encoding and decoding executables.
+
+base64 consists of ASCII text, and is therefore a useful encoding for storing 
+binary data in a text file, such as xml, or sending binary data over text-only
+email.
+
+References:
+----------
+* Wikipedia article:
+	http://en.wikipedia.org/wiki/Base64
+* base64, another implementation of a commandline en/decoder:
+	http://www.fourmilab.ch/webtools/base64/
+
+Why?
+---
+I did this because I need an implementation of base64 encoding and decoding,
+without any licensing problems. Most OS implementations are released under
+either the GNU/GPL, or a BSD-variant, which is not what I require.
+
+Also, the chance to actually use the co-routine implementation in code is rare,
+and its use here is fitting. I couldn't pass up the chance.
+For more information on this technique, see "Coroutines in C", by Simon Tatham,
+which can be found online here: 
+http://www.chiark.greenend.org.uk/~sgtatham/coroutines.html
+
+So then, under which license do I release this code? On to the next section...
+
+License:
+-------
+This work is released under into the Public Domain.
+It basically boils down to this: I put this work in the public domain, and you
+can take it and do whatever you want with it.
+
+An example of this "license" is the Creative Commons Public Domain License, a
+copy of which can be found in the LICENSE file, and also online at
+http://creativecommons.org/licenses/publicdomain/
+
+Commandline Use:
+---------------
+There is a new executable available, it is simply called base64.
+It can encode and decode files, as instructed by the user.
+
+To encode a file:
+$ ./base64 -e filea fileb
+fileb will now be the base64-encoded version of filea.
+
+To decode a file:
+$ ./base64 -d fileb filec
+filec will now be identical to filea.
+
+Programming:
+-----------
+Some C++ wrappers are provided as well, so you don't have to get your hands
+dirty. Encoding from standard input to standard output is as simple as
+
+	#include <b64/encode.h>
+	#include <iostream>
+	int main()
+	{
+		base64::encoder E;
+		E.encode(std::cin, std::cout);
+		return 0;
+	}
+
+Both standalone executables and a static library is provided in the package,
+
+Implementation:
+--------------
+It is DAMN fast, if I may say so myself. The C code uses a little trick which
+has been used to implement coroutines, of which one can say that this
+implementation is an example.
+
+(To see how the libb64 codebase compares with some other BASE64 implementations
+available, see the BENCHMARKS file)
+
+The trick involves the fact that a switch-statement may legally cross into
+sub-blocks. A very thorough and enlightening essay on co-routines in C, using
+this method, can be found in the above mentioned "Coroutines in C", by Simon
+Tatham: http://www.chiark.greenend.org.uk/~sgtatham/coroutines.html
+
+For example, an RLE decompressing routine, adapted from the article:
+1	static int STATE = 0;
+2	static int len, c;
+3	switch (STATE)
+4	{
+5		while (1)
+6		{
+7			c = getchar();
+8			if (c == EOF) return EOF;
+9			if (c == 0xFF) {
+10				len = getchar();
+11				c = getchar();
+12				while (len--)
+13				{
+14					STATE = 0;
+15					return c;
+16	case 0:
+17				}
+18			} else
+19				STATE = 1;
+20				return c;
+21	case 1:
+22			}
+23		}
+24	}
+
+As can be seen from this example, a coroutine depends on a state variable,
+which it sets directly before exiting (lines 14 and 119). The next time the
+routine is entered, the switch moves control to the specific point directly
+after the previous exit (lines 16 and 21).hands
+
+(As an aside, in the mentioned article the combination of the top-level switch,
+the various setting of the state, the return of a value, and the labelling of
+the exit point is wrapped in #define macros, making the structure of the
+routine even clearer.)
+
+The obvious problem with any such routine is the static keyword.
+Any static variables in a function spell doom for multithreaded applications.
+Also, in situations where this coroutine is used by more than one other
+coroutines, the consistency is disturbed.
+
+What is needed is a structure for storing these variabled, which is passed to
+the routine seperately. This obviously breaks the modularity of the function,
+since now the caller has to worry about and care for the internal state of the
+routine (the callee). This allows for a fast, multithreading-enabled
+implementation, which may (obviously) be wrapped in a C++ object for ease of
+use.
+
+The base64 encoding and decoding functionality in this package is implemented
+in exactly this way, providing both a high-speed high-maintanence C interface,
+and a wrapped C++ which is low-maintanence and only slightly less performant.

deps/libb64-1.2/base64/Makefile

@@ -0,0 +1,56 @@
+BINARIES = base64
+
+# Build flags (uncomment one)
+#############################
+# Release build flags
+CFLAGS += -O3
+#############################
+# Debug build flags
+#CFLAGS += -g
+#############################
+
+# select a buffersize
+# a larger size should be faster, but takes more runtime memory
+#BUFFERSIZE = 4096
+#BUFFERSIZE = 65536
+BUFFERSIZE = 16777216
+
+SOURCES = base64.cc
+
+TARGETS = $(BINARIES)
+
+LINK.o = g++
+
+CFLAGS += -Werror -pedantic
+CFLAGS += -DBUFFERSIZE=$(BUFFERSIZE)
+CFLAGS += -I../include
+
+CXXFLAGS += $(CFLAGS)
+
+vpath %.h ../include/b64
+vpath %.a ../src
+
+.PHONY : clean
+
+all: $(TARGETS) #strip
+
+base64: libb64.a
+
+strip:
+	strip $(BINARIES) *.exe
+
+clean: clean_VisualStudioProject
+	rm -f *.exe* *.o $(TARGETS) *.bak *~
+clean_VisualStudioProject:
+	$(MAKE) -C VisualStudioProject clean
+
+distclean: clean distclean_VisualStudioProject
+	rm -f depend
+distclean_VisualStudioProject: clean_VisualStudioProject
+	$(MAKE) -C VisualStudioProject distclean
+
+depend: $(SOURCES)
+	makedepend -f- $(CFLAGS) $(SOURCES) 2> /dev/null 1> depend
+
+-include depend
+

deps/libb64-1.2/base64/VisualStudioProject/Makefile

@@ -0,0 +1,11 @@
+DEBRIS = base64.sdf base64.suo base64.vcxproj.user
+
+all:
+
+clean:
+	rm -rf Debug Release
+
+distclean: clean
+	rm -f $(DEBRIS)
+
+	

deps/libb64-1.2/base64/VisualStudioProject/base64.sln

@@ -0,0 +1,20 @@
+
+Microsoft Visual Studio Solution File, Format Version 11.00
+# Visual C++ Express 2010
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "base64", "base64.vcxproj", "{0B094121-DC64-4D74-AFA0-750B83F800D0}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Win32 = Debug|Win32
+		Release|Win32 = Release|Win32
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{0B094121-DC64-4D74-AFA0-750B83F800D0}.Debug|Win32.ActiveCfg = Debug|Win32
+		{0B094121-DC64-4D74-AFA0-750B83F800D0}.Debug|Win32.Build.0 = Debug|Win32
+		{0B094121-DC64-4D74-AFA0-750B83F800D0}.Release|Win32.ActiveCfg = Release|Win32
+		{0B094121-DC64-4D74-AFA0-750B83F800D0}.Release|Win32.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

deps/libb64-1.2/base64/VisualStudioProject/base64.vcxproj

@@ -0,0 +1,92 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{0B094121-DC64-4D74-AFA0-750B83F800D0}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>base64</RootNamespace>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>BUFFERSIZE=16777216;WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>H:\builds\libb64\working.libb64\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>BUFFERSIZE=16777216;WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>H:\builds\libb64\working.libb64\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="..\..\src\cdecode.c" />
+    <ClCompile Include="..\..\src\cencode.c" />
+    <ClCompile Include="..\base64.cc" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="..\..\include\b64\cdecode.h" />
+    <ClInclude Include="..\..\include\b64\cencode.h" />
+    <ClInclude Include="..\..\include\b64\decode.h" />
+    <ClInclude Include="..\..\include\b64\encode.h" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>

deps/libb64-1.2/base64/VisualStudioProject/base64.vcxproj.filters

@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="Source Files">
+      <UniqueIdentifier>{12b9f2a2-b899-409a-a507-8cefe9c39b25}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="Header Files">
+      <UniqueIdentifier>{ce5598bd-67f3-430f-890b-cefa880e9405}</UniqueIdentifier>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="..\base64.cc">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\..\src\cencode.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\..\src\cdecode.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="..\..\include\b64\encode.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\include\b64\cdecode.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\include\b64\cencode.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\include\b64\decode.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+  </ItemGroup>
+</Project>

deps/libb64-1.2/base64/base64.cc

@@ -0,0 +1,94 @@
+/*
+base64.cc - c++ source to a base64 reference encoder and decoder
+
+This is part of the libb64 project, and has been placed in the public domain.
+For details, see http://sourceforge.net/projects/libb64
+*/
+
+#include <b64/encode.h>
+#include <b64/decode.h>
+
+#include <iostream>
+#include <fstream>
+#include <string>
+
+#include <stdlib.h>
+
+// Function which prints the usage of this executable
+void usage()
+{
+	std::cerr<< \
+		"base64: Encodes and Decodes files using base64\n" \
+		"Usage: base64 [-e|-d] [input] [output]\n" \
+		"   Where [-e] will encode the input file into the output file,\n" \
+		"         [-d] will decode the input file into the output file, and\n" \
+		"         [input] and [output] are the input and output files, respectively.\n";
+}
+// Function which prints the usage of this executable, plus a short message
+void usage(const std::string& message)
+{
+	usage();
+	std::cerr<<"Incorrect invocation of base64:\n";
+	std::cerr<<message<<std::endl;
+}
+
+int main(int argc, char** argv)
+{
+	// Quick check for valid arguments
+	if (argc == 1)
+	{
+		usage();
+		exit(-1);
+	}
+	if (argc != 4)
+	{
+		usage("Wrong number of arguments!");
+		exit(-1);
+	}
+	
+	// So far so good; try to open the input file
+	std::string input = argv[2];
+	// Note that we have to open the input in binary mode.
+	// This is due to some operating systems not using binary mode by default.
+	// Since we will most likely be dealing with binary files when encoding, we
+	// have to be able to deal with zeros (and other invalid chars) in the input stream.
+	std::ifstream instream(input.c_str(), std::ios_base::in | std::ios_base::binary);
+	if (!instream.is_open())
+	{
+		usage("Could not open input file!");
+		exit(-1);
+	}
+	
+	// Now try to open the output file
+	std::string output = argv[3];
+	// Again, note that we have to open the ouput in binary mode.
+	// Similiarly, we will most likely need to deal with zeros in the output stream when we
+	// are decoding, and the output stream has to be able to use these invalid text chars.
+	std::ofstream outstream(output.c_str(), std::ios_base::out | std::ios_base::binary);
+	if (!outstream.is_open())
+	{
+		usage("Could not open output file!");
+		exit(-1);
+	}
+
+	// determine whether we need to encode or decode:
+	std::string choice = argv[1];
+	if (choice == "-d")
+	{
+		base64::decoder D;
+		D.decode(instream, outstream);
+	}
+	else if (choice == "-e")
+	{
+		base64::encoder E;
+		E.encode(instream, outstream);
+	}
+	else
+	{
+		std::cout<<"["<<choice<<"]"<<std::endl;
+		usage("Please specify -d or -e as first argument!");
+	}
+
+	return 0;
+}
+

deps/libb64-1.2/include/b64/cdecode.h

@@ -0,0 +1,28 @@
+/*
+cdecode.h - c header for a base64 decoding algorithm
+
+This is part of the libb64 project, and has been placed in the public domain.
+For details, see http://sourceforge.net/projects/libb64
+*/
+
+#ifndef BASE64_CDECODE_H
+#define BASE64_CDECODE_H
+
+typedef enum
+{
+	step_a, step_b, step_c, step_d
+} base64_decodestep;
+
+typedef struct
+{
+	base64_decodestep step;
+	char plainchar;
+} base64_decodestate;
+
+void base64_init_decodestate(base64_decodestate* state_in);
+
+int base64_decode_value(char value_in);
+
+int base64_decode_block(const char* code_in, const int length_in, char* plaintext_out, base64_decodestate* state_in);
+
+#endif /* BASE64_CDECODE_H */

deps/libb64-1.2/include/b64/cencode.h

@@ -0,0 +1,31 @@
+/*
+cencode.h - c header for a base64 encoding algorithm
+
+This is part of the libb64 project, and has been placed in the public domain.
+For details, see http://sourceforge.net/projects/libb64
+*/
+
+#ifndef BASE64_CENCODE_H
+#define BASE64_CENCODE_H
+
+typedef enum
+{
+	step_A, step_B, step_C
+} base64_encodestep;
+
+typedef struct
+{
+	base64_encodestep step;
+	char result;
+	int stepcount;
+} base64_encodestate;
+
+void base64_init_encodestate(base64_encodestate* state_in);
+
+char base64_encode_value(char value_in);
+
+int base64_encode_block(const char* plaintext_in, int length_in, char* code_out, base64_encodestate* state_in);
+
+int base64_encode_blockend(char* code_out, base64_encodestate* state_in);
+
+#endif /* BASE64_CENCODE_H */

deps/libb64-1.2/include/b64/decode.h

@@ -0,0 +1,70 @@
+// :mode=c++:
+/*
+decode.h - c++ wrapper for a base64 decoding algorithm
+
+This is part of the libb64 project, and has been placed in the public domain.
+For details, see http://sourceforge.net/projects/libb64
+*/
+#ifndef BASE64_DECODE_H
+#define BASE64_DECODE_H
+
+#include <iostream>
+
+namespace base64
+{
+	extern "C"
+	{
+		#include "cdecode.h"
+	}
+
+	struct decoder
+	{
+		base64_decodestate _state;
+		int _buffersize;
+
+		decoder(int buffersize_in = BUFFERSIZE)
+		: _buffersize(buffersize_in)
+		{}
+
+		int decode(char value_in)
+		{
+			return base64_decode_value(value_in);
+		}
+
+		int decode(const char* code_in, const int length_in, char* plaintext_out)
+		{
+			return base64_decode_block(code_in, length_in, plaintext_out, &_state);
+		}
+
+		void decode(std::istream& istream_in, std::ostream& ostream_in)
+		{
+			base64_init_decodestate(&_state);
+			//
+			const int N = _buffersize;
+			char* code = new char[N];
+			char* plaintext = new char[N];
+			int codelength;
+			int plainlength;
+
+			do
+			{
+				istream_in.read((char*)code, N);
+				codelength = istream_in.gcount();
+				plainlength = decode(code, codelength, plaintext);
+				ostream_in.write((const char*)plaintext, plainlength);
+			}
+			while (istream_in.good() && codelength > 0);
+			//
+			base64_init_decodestate(&_state);
+
+			delete [] code;
+			delete [] plaintext;
+		}
+	};
+
+} // namespace base64
+
+
+
+#endif // BASE64_DECODE_H
+

deps/libb64-1.2/include/b64/encode.h

@@ -0,0 +1,77 @@
+// :mode=c++:
+/*
+encode.h - c++ wrapper for a base64 encoding algorithm
+
+This is part of the libb64 project, and has been placed in the public domain.
+For details, see http://sourceforge.net/projects/libb64
+*/
+#ifndef BASE64_ENCODE_H
+#define BASE64_ENCODE_H
+
+#include <iostream>
+
+namespace base64
+{
+	extern "C" 
+	{
+		#include "cencode.h"
+	}
+
+	struct encoder
+	{
+		base64_encodestate _state;
+		int _buffersize;
+
+		encoder(int buffersize_in = BUFFERSIZE)
+		: _buffersize(buffersize_in)
+		{}
+
+		int encode(char value_in)
+		{
+			return base64_encode_value(value_in);
+		}
+
+		int encode(const char* code_in, const int length_in, char* plaintext_out)
+		{
+			return base64_encode_block(code_in, length_in, plaintext_out, &_state);
+		}
+
+		int encode_end(char* plaintext_out)
+		{
+			return base64_encode_blockend(plaintext_out, &_state);
+		}
+
+		void encode(std::istream& istream_in, std::ostream& ostream_in)
+		{
+			base64_init_encodestate(&_state);
+			//
+			const int N = _buffersize;
+			char* plaintext = new char[N];
+			char* code = new char[2*N];
+			int plainlength;
+			int codelength;
+
+			do
+			{
+				istream_in.read(plaintext, N);
+				plainlength = istream_in.gcount();
+				//
+				codelength = encode(plaintext, plainlength, code);
+				ostream_in.write(code, codelength);
+			}
+			while (istream_in.good() && plainlength > 0);
+
+			codelength = encode_end(code);
+			ostream_in.write(code, codelength);
+			//
+			base64_init_encodestate(&_state);
+
+			delete [] code;
+			delete [] plaintext;
+		}
+	};
+
+} // namespace base64
+
+#endif // BASE64_ENCODE_H
+

deps/libb64-1.2/src/Makefile

@@ -0,0 +1,43 @@
+LIBRARIES = libb64.a
+
+# Build flags (uncomment one)
+#############################
+# Release build flags
+CFLAGS += -O3
+#############################
+# Debug build flags
+#CFLAGS += -g
+#############################
+
+SOURCES = cdecode.c  cencode.c
+
+TARGETS = $(LIBRARIES)
+
+LINK.o = gcc
+
+CFLAGS += -Werror -pedantic
+CFLAGS += -I../include
+
+vpath %.h ../include/b64
+
+.PHONY : clean
+
+all: $(TARGETS) #strip
+
+libb64.a: cencode.o cdecode.o
+	$(AR) $(ARFLAGS) $@ $^
+
+strip:
+	strip $(BINARIES) *.exe
+
+clean:
+	rm -f *.exe* *.o $(TARGETS) *.bak *~
+
+distclean: clean
+	rm -f depend
+
+depend: $(SOURCES)
+	makedepend -f- $(CFLAGS) $(SOURCES) 2> /dev/null 1> depend
+
+-include depend
+

deps/libb64-1.2/src/cdecode.c

@@ -0,0 +1,88 @@
+/*
+cdecoder.c - c source to a base64 decoding algorithm implementation
+
+This is part of the libb64 project, and has been placed in the public domain.
+For details, see http://sourceforge.net/projects/libb64
+*/
+
+#include <b64/cdecode.h>
+
+int base64_decode_value(char value_in)
+{
+	static const char decoding[] = {62,-1,-1,-1,63,52,53,54,55,56,57,58,59,60,61,-1,-1,-1,-2,-1,-1,-1,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,-1,-1,-1,-1,-1,-1,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51};
+	static const char decoding_size = sizeof(decoding);
+	value_in -= 43;
+	if (value_in < 0 || value_in > decoding_size) return -1;
+	return decoding[(int)value_in];
+}
+
+void base64_init_decodestate(base64_decodestate* state_in)
+{
+	state_in->step = step_a;
+	state_in->plainchar = 0;
+}
+
+int base64_decode_block(const char* code_in, const int length_in, char* plaintext_out, base64_decodestate* state_in)
+{
+	const char* codechar = code_in;
+	char* plainchar = plaintext_out;
+	char fragment;
+	
+	*plainchar = state_in->plainchar;
+	
+	switch (state_in->step)
+	{
+		while (1)
+		{
+	case step_a:
+			do {
+				if (codechar == code_in+length_in)
+				{
+					state_in->step = step_a;
+					state_in->plainchar = *plainchar;
+					return plainchar - plaintext_out;
+				}
+				fragment = (char)base64_decode_value(*codechar++);
+			} while (fragment < 0);
+			*plainchar    = (fragment & 0x03f) << 2;
+	case step_b:
+			do {
+				if (codechar == code_in+length_in)
+				{
+					state_in->step = step_b;
+					state_in->plainchar = *plainchar;
+					return plainchar - plaintext_out;
+				}
+				fragment = (char)base64_decode_value(*codechar++);
+			} while (fragment < 0);
+			*plainchar++ |= (fragment & 0x030) >> 4;
+			*plainchar    = (fragment & 0x00f) << 4;
+	case step_c:
+			do {
+				if (codechar == code_in+length_in)
+				{
+					state_in->step = step_c;
+					state_in->plainchar = *plainchar;
+					return plainchar - plaintext_out;
+				}
+				fragment = (char)base64_decode_value(*codechar++);
+			} while (fragment < 0);
+			*plainchar++ |= (fragment & 0x03c) >> 2;
+			*plainchar    = (fragment & 0x003) << 6;
+	case step_d:
+			do {
+				if (codechar == code_in+length_in)
+				{
+					state_in->step = step_d;
+					state_in->plainchar = *plainchar;
+					return plainchar - plaintext_out;
+				}
+				fragment = (char)base64_decode_value(*codechar++);
+			} while (fragment < 0);
+			*plainchar++   |= (fragment & 0x03f);
+		}
+	}
+	/* control should not reach here */
+	return plainchar - plaintext_out;
+}
+

deps/libb64-1.2/src/cencode.c

@@ -0,0 +1,109 @@
+/*
+cencoder.c - c source to a base64 encoding algorithm implementation
+
+This is part of the libb64 project, and has been placed in the public domain.
+For details, see http://sourceforge.net/projects/libb64
+*/
+
+#include <b64/cencode.h>
+
+const int CHARS_PER_LINE = 72;
+
+void base64_init_encodestate(base64_encodestate* state_in)
+{
+	state_in->step = step_A;
+	state_in->result = 0;
+	state_in->stepcount = 0;
+}
+
+char base64_encode_value(char value_in)
+{
+	static const char* encoding = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+	if (value_in > 63) return '=';
+	return encoding[(int)value_in];
+}
+
+int base64_encode_block(const char* plaintext_in, int length_in, char* code_out, base64_encodestate* state_in)
+{
+	const char* plainchar = plaintext_in;
+	const char* const plaintextend = plaintext_in + length_in;
+	char* codechar = code_out;
+	char result;
+	char fragment;
+	
+	result = state_in->result;
+	
+	switch (state_in->step)
+	{
+		while (1)
+		{
+	case step_A:
+			if (plainchar == plaintextend)
+			{
+				state_in->result = result;
+				state_in->step = step_A;
+				return codechar - code_out;
+			}
+			fragment = *plainchar++;
+			result = (fragment & 0x0fc) >> 2;
+			*codechar++ = base64_encode_value(result);
+			result = (fragment & 0x003) << 4;
+	case step_B:
+			if (plainchar == plaintextend)
+			{
+				state_in->result = result;
+				state_in->step = step_B;
+				return codechar - code_out;
+			}
+			fragment = *plainchar++;
+			result |= (fragment & 0x0f0) >> 4;
+			*codechar++ = base64_encode_value(result);
+			result = (fragment & 0x00f) << 2;
+	case step_C:
+			if (plainchar == plaintextend)
+			{
+				state_in->result = result;
+				state_in->step = step_C;
+				return codechar - code_out;
+			}
+			fragment = *plainchar++;
+			result |= (fragment & 0x0c0) >> 6;
+			*codechar++ = base64_encode_value(result);
+			result  = (fragment & 0x03f) >> 0;
+			*codechar++ = base64_encode_value(result);
+			
+			++(state_in->stepcount);
+			if (state_in->stepcount == CHARS_PER_LINE/4)
+			{
+				*codechar++ = '\n';
+				state_in->stepcount = 0;
+			}
+		}
+	}
+	/* control should not reach here */
+	return codechar - code_out;
+}
+
+int base64_encode_blockend(char* code_out, base64_encodestate* state_in)
+{
+	char* codechar = code_out;
+	
+	switch (state_in->step)
+	{
+	case step_B:
+		*codechar++ = base64_encode_value(state_in->result);
+		*codechar++ = '=';
+		*codechar++ = '=';
+		break;
+	case step_C:
+		*codechar++ = base64_encode_value(state_in->result);
+		*codechar++ = '=';
+		break;
+	case step_A:
+		break;
+	}
+	*codechar++ = '\n';
+	
+	return codechar - code_out;
+}
+