/*?
???base64.cpp?and?base64.h

???Copyright?（C）?2004-2008?Ren?Nyffenegger

???This?source?code?is?provided?‘as-is‘?without?any?express?or?implied
???warranty.?In?no?event?will?the?author?be?held?liable?for?any?damages
???arising?from?the?use?of?this?software.

???Permission?is?granted?to?anyone?to?use?this?software?for?any?purpose
???including?commercial?applications?and?to?alter?it?and?redistribute?it
???freely?subject?to?the?following?restrictions:

???1.?The?origin?of?this?source?code?must?not?be?misrepresented;?you?must?not
??????claim?that?you?wrote?the?original?source?code.?If?you?use?this?source?code
??????in?a?product?an?acknowledgment?in?the?product?documentation?would?be
??????appreciated?but?is?not?required.

???2.?Altered?source?versions?must?be?plainly?marked?as?such?and?must?not?be
??????misrepresented?as?being?the?original?source?code.

???3.?This?notice?may?not?be?removed?or?altered?from?any?source?distribution.

???Ren?Nyffenegger?rene.nyffenegger@adp-gmbh.ch

*/

#include?“base64.h“
#include?

static?const?std::string?base64_chars?=?
?????????????“ABCDEFGHIJKLMNOPQRSTUVWXYZ“
?????????????“abcdefghijklmnopqrstuvwxyz“
?????????????“0123456789+/“;


static?inline?bool?is_base64（unsigned?char?c）?
{
??return?（isalnum（c）?||?（c?==?‘+‘）?||?（c?==?‘/‘））;
}

std::string?base64_encode（unsigned?char?const*?bytes_to_encode?unsigned?int?in_len）?
{
??std::string?ret;
??int?i?=?0?j?=?0;
??unsigned?char?char_array_3[3]?char_array_4[4];

??while?（in_len--）
	{
????char_array_3[i++]?=?*（bytes_to_encode++）;
????if?（i?==?3）?
		{
??????char_array_4[0]?=?（char_array_3[0]?&?0xfc）?>>?2;
??????char_array_4[1]?=?（（char_array_3[0]?&?0x03）?<>?4）;
??????char_array_4[2]?=?（（char_array_3[1]?&?0x0f）?<>?6）;
??????char_array_4[3]?=?char_array_3[2]?&?0x3f;

??????for（i?=?0;?（i?<4）?;?i++）
????????ret?+=?base64_chars[char_array_4[i]];
??????i?=?0;
????}
??}

??if?（i）
??{
????for（j?=?i;?j???????char_array_3[j]?=?‘\0‘;

????char_array_4[0]?=?（char_array_3[0]?&?0xfc）?>>?2;
????char_array_4[1]?=?（（char_array_3[0]?&?0x03）?<>?4）;
????char_array_4[2]?=?（（char_array_3[1]?&?0x0f）?<>?6）;
????char_array_4[3]?=?char_array_3[2]?&?0x3f;

????for?（j?=?0;?（j???????ret?+=?base64_chars[char_array_4[j]];

????while（（i++???????ret?+=?‘=‘;

??}

??return?ret;

}

std::string?base64_decode（std::string?const&?encoded_string）?
{
??int?in_len?=?encoded_string.size（）;
??int?i?=?0?j?=?0?in_?=?0;
??unsigned?char?char_array_4[4]?char_array_3[3];
??std::string?ret;

??while?（in_len--?&&?（?encoded_string[in_]?!=?‘=‘）?&&?is_base64（encoded_string[in_]））?
	{
????char_array_4[i++]?=?encoded_string[in_];?in_++;
????if?（i?==4）?{
??????for?（i?=?0;?i?<4;?i++）
????????char_array_4[i]?=?base64_chars.find（char_array_4[i]）;

?

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件??????17536??2013-08-17?11:22??CSmtp_v2_4_ssl-直接可用@qq\Article?Source.htm

?????文件????????874??2010-08-09?13:32??CSmtp_v2_4_ssl-直接可用@qq\Backup\CSmtp.sln

?????文件???????3844??2008-08-18?14:23??CSmtp_v2_4_ssl-直接可用@qq\base64.cpp

?????文件????????190??2008-07-18?20:30??CSmtp_v2_4_ssl-直接可用@qq\base64.h

?????文件??????76596??2017-02-28?13:44??CSmtp_v2_4_ssl-直接可用@qq\CSmtp.cpp

?????文件???????7298??2015-10-22?20:47??CSmtp_v2_4_ssl-直接可用@qq\CSmtp.h

?????文件???38338560??2017-03-02?14:35??CSmtp_v2_4_ssl-直接可用@qq\CSmtp.sdf

?????文件????????955??2017-02-28?11:41??CSmtp_v2_4_ssl-直接可用@qq\CSmtp.sln

????..A..H.?????17920??2017-03-02?14:35??CSmtp_v2_4_ssl-直接可用@qq\CSmtp.v12.suo

?????文件???????6477??2010-08-20?20:26??CSmtp_v2_4_ssl-直接可用@qq\CSmtp.vcproj

?????文件???????7238??2017-02-28?11:41??CSmtp_v2_4_ssl-直接可用@qq\CSmtp.vcxproj

?????文件???????1475??2017-02-28?11:41??CSmtp_v2_4_ssl-直接可用@qq\CSmtp.vcxproj.filters

?????文件?????141050??2017-02-28?11:42??CSmtp_v2_4_ssl-直接可用@qq\Debug\base64.obj

?????文件????2202624??2017-02-28?14:47??CSmtp_v2_4_ssl-直接可用@qq\Debug\CSmtp.exe

?????文件????5547784??2017-02-28?14:47??CSmtp_v2_4_ssl-直接可用@qq\Debug\CSmtp.ilk

?????文件???????1470??2017-02-28?14:47??CSmtp_v2_4_ssl-直接可用@qq\Debug\CSmtp.log

?????文件?????708761??2017-02-28?14:29??CSmtp_v2_4_ssl-直接可用@qq\Debug\CSmtp.obj

?????文件????9342976??2017-02-28?14:47??CSmtp_v2_4_ssl-直接可用@qq\Debug\CSmtp.pdb

?????文件???????3026??2017-02-28?14:47??CSmtp_v2_4_ssl-直接可用@qq\Debug\CSmtp.tlog\cl.command.1.tlog

?????文件??????98526??2017-02-28?14:47??CSmtp_v2_4_ssl-直接可用@qq\Debug\CSmtp.tlog\CL.read.1.tlog

?????文件???????3092??2017-02-28?14:47??CSmtp_v2_4_ssl-直接可用@qq\Debug\CSmtp.tlog\CL.write.1.tlog

?????文件????????178??2017-02-28?14:47??CSmtp_v2_4_ssl-直接可用@qq\Debug\CSmtp.tlog\CSmtp.lastbuildstate

?????文件???????1482??2017-02-28?14:47??CSmtp_v2_4_ssl-直接可用@qq\Debug\CSmtp.tlog\link.command.1.tlog

?????文件???????3764??2017-02-28?14:47??CSmtp_v2_4_ssl-直接可用@qq\Debug\CSmtp.tlog\link.read.1.tlog

?????文件????????862??2017-02-28?14:47??CSmtp_v2_4_ssl-直接可用@qq\Debug\CSmtp.tlog\link.write.1.tlog

?????文件?????219460??2017-02-28?14:47??CSmtp_v2_4_ssl-直接可用@qq\Debug\main.obj

?????文件?????287653??2017-02-28?11:42??CSmtp_v2_4_ssl-直接可用@qq\Debug\md5.obj

?????文件????1182720??2017-02-28?14:47??CSmtp_v2_4_ssl-直接可用@qq\Debug\vc120.idb

?????文件?????544768??2017-02-28?14:47??CSmtp_v2_4_ssl-直接可用@qq\Debug\vc120.pdb

?????文件???????1877??2017-03-02?14:30??CSmtp_v2_4_ssl-直接可用@qq\main.cpp

............此處省略85個文件信息