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GNU GENERAL PUBLIC LICENSE |
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Version 2, June 1991 |
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|
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Copyright (C) 1989, 1991 Free Software Foundation, Inc., <http://fsf.org/> |
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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Everyone is permitted to copy and distribute verbatim copies |
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of this license document, but changing it is not allowed. |
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|
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Preamble |
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|
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The licenses for most software are designed to take away your |
||||
freedom to share and change it. By contrast, the GNU General Public |
||||
License is intended to guarantee your freedom to share and change free |
||||
software--to make sure the software is free for all its users. This |
||||
General Public License applies to most of the Free Software |
||||
Foundation's software and to any other program whose authors commit to |
||||
using it. (Some other Free Software Foundation software is covered by |
||||
the GNU Lesser General Public License instead.) You can apply it to |
||||
your programs, too. |
||||
|
||||
When we speak of free software, we are referring to freedom, not |
||||
price. Our General Public Licenses are designed to make sure that you |
||||
have the freedom to distribute copies of free software (and charge for |
||||
this service if you wish), that you receive source code or can get it |
||||
if you want it, that you can change the software or use pieces of it |
||||
in new free programs; and that you know you can do these things. |
||||
|
||||
To protect your rights, we need to make restrictions that forbid |
||||
anyone to deny you these rights or to ask you to surrender the rights. |
||||
These restrictions translate to certain responsibilities for you if you |
||||
distribute copies of the software, or if you modify it. |
||||
|
||||
For example, if you distribute copies of such a program, whether |
||||
gratis or for a fee, you must give the recipients all the rights that |
||||
you have. You must make sure that they, too, receive or can get the |
||||
source code. And you must show them these terms so they know their |
||||
rights. |
||||
|
||||
We protect your rights with two steps: (1) copyright the software, and |
||||
(2) offer you this license which gives you legal permission to copy, |
||||
distribute and/or modify the software. |
||||
|
||||
Also, for each author's protection and ours, we want to make certain |
||||
that everyone understands that there is no warranty for this free |
||||
software. If the software is modified by someone else and passed on, we |
||||
want its recipients to know that what they have is not the original, so |
||||
that any problems introduced by others will not reflect on the original |
||||
authors' reputations. |
||||
|
||||
Finally, any free program is threatened constantly by software |
||||
patents. We wish to avoid the danger that redistributors of a free |
||||
program will individually obtain patent licenses, in effect making the |
||||
program proprietary. To prevent this, we have made it clear that any |
||||
patent must be licensed for everyone's free use or not licensed at all. |
||||
|
||||
The precise terms and conditions for copying, distribution and |
||||
modification follow. |
||||
|
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GNU GENERAL PUBLIC LICENSE |
||||
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION |
||||
|
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0. This License applies to any program or other work which contains |
||||
a notice placed by the copyright holder saying it may be distributed |
||||
under the terms of this General Public License. The "Program", below, |
||||
refers to any such program or work, and a "work based on the Program" |
||||
means either the Program or any derivative work under copyright law: |
||||
that is to say, a work containing the Program or a portion of it, |
||||
either verbatim or with modifications and/or translated into another |
||||
language. (Hereinafter, translation is included without limitation in |
||||
the term "modification".) Each licensee is addressed as "you". |
||||
|
||||
Activities other than copying, distribution and modification are not |
||||
covered by this License; they are outside its scope. The act of |
||||
running the Program is not restricted, and the output from the Program |
||||
is covered only if its contents constitute a work based on the |
||||
Program (independent of having been made by running the Program). |
||||
Whether that is true depends on what the Program does. |
||||
|
||||
1. You may copy and distribute verbatim copies of the Program's |
||||
source code as you receive it, in any medium, provided that you |
||||
conspicuously and appropriately publish on each copy an appropriate |
||||
copyright notice and disclaimer of warranty; keep intact all the |
||||
notices that refer to this License and to the absence of any warranty; |
||||
and give any other recipients of the Program a copy of this License |
||||
along with the Program. |
||||
|
||||
You may charge a fee for the physical act of transferring a copy, and |
||||
you may at your option offer warranty protection in exchange for a fee. |
||||
|
||||
2. You may modify your copy or copies of the Program or any portion |
||||
of it, thus forming a work based on the Program, and copy and |
||||
distribute such modifications or work under the terms of Section 1 |
||||
above, provided that you also meet all of these conditions: |
||||
|
||||
a) You must cause the modified files to carry prominent notices |
||||
stating that you changed the files and the date of any change. |
||||
|
||||
b) You must cause any work that you distribute or publish, that in |
||||
whole or in part contains or is derived from the Program or any |
||||
part thereof, to be licensed as a whole at no charge to all third |
||||
parties under the terms of this License. |
||||
|
||||
c) If the modified program normally reads commands interactively |
||||
when run, you must cause it, when started running for such |
||||
interactive use in the most ordinary way, to print or display an |
||||
announcement including an appropriate copyright notice and a |
||||
notice that there is no warranty (or else, saying that you provide |
||||
a warranty) and that users may redistribute the program under |
||||
these conditions, and telling the user how to view a copy of this |
||||
License. (Exception: if the Program itself is interactive but |
||||
does not normally print such an announcement, your work based on |
||||
the Program is not required to print an announcement.) |
||||
|
||||
These requirements apply to the modified work as a whole. If |
||||
identifiable sections of that work are not derived from the Program, |
||||
and can be reasonably considered independent and separate works in |
||||
themselves, then this License, and its terms, do not apply to those |
||||
sections when you distribute them as separate works. But when you |
||||
distribute the same sections as part of a whole which is a work based |
||||
on the Program, the distribution of the whole must be on the terms of |
||||
this License, whose permissions for other licensees extend to the |
||||
entire whole, and thus to each and every part regardless of who wrote it. |
||||
|
||||
Thus, it is not the intent of this section to claim rights or contest |
||||
your rights to work written entirely by you; rather, the intent is to |
||||
exercise the right to control the distribution of derivative or |
||||
collective works based on the Program. |
||||
|
||||
In addition, mere aggregation of another work not based on the Program |
||||
with the Program (or with a work based on the Program) on a volume of |
||||
a storage or distribution medium does not bring the other work under |
||||
the scope of this License. |
||||
|
||||
3. You may copy and distribute the Program (or a work based on it, |
||||
under Section 2) in object code or executable form under the terms of |
||||
Sections 1 and 2 above provided that you also do one of the following: |
||||
|
||||
a) Accompany it with the complete corresponding machine-readable |
||||
source code, which must be distributed under the terms of Sections |
||||
1 and 2 above on a medium customarily used for software interchange; or, |
||||
|
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b) Accompany it with a written offer, valid for at least three |
||||
years, to give any third party, for a charge no more than your |
||||
cost of physically performing source distribution, a complete |
||||
machine-readable copy of the corresponding source code, to be |
||||
distributed under the terms of Sections 1 and 2 above on a medium |
||||
customarily used for software interchange; or, |
||||
|
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c) Accompany it with the information you received as to the offer |
||||
to distribute corresponding source code. (This alternative is |
||||
allowed only for noncommercial distribution and only if you |
||||
received the program in object code or executable form with such |
||||
an offer, in accord with Subsection b above.) |
||||
|
||||
The source code for a work means the preferred form of the work for |
||||
making modifications to it. For an executable work, complete source |
||||
code means all the source code for all modules it contains, plus any |
||||
associated interface definition files, plus the scripts used to |
||||
control compilation and installation of the executable. However, as a |
||||
special exception, the source code distributed need not include |
||||
anything that is normally distributed (in either source or binary |
||||
form) with the major components (compiler, kernel, and so on) of the |
||||
operating system on which the executable runs, unless that component |
||||
itself accompanies the executable. |
||||
|
||||
If distribution of executable or object code is made by offering |
||||
access to copy from a designated place, then offering equivalent |
||||
access to copy the source code from the same place counts as |
||||
distribution of the source code, even though third parties are not |
||||
compelled to copy the source along with the object code. |
||||
|
||||
4. You may not copy, modify, sublicense, or distribute the Program |
||||
except as expressly provided under this License. Any attempt |
||||
otherwise to copy, modify, sublicense or distribute the Program is |
||||
void, and will automatically terminate your rights under this License. |
||||
However, parties who have received copies, or rights, from you under |
||||
this License will not have their licenses terminated so long as such |
||||
parties remain in full compliance. |
||||
|
||||
5. You are not required to accept this License, since you have not |
||||
signed it. However, nothing else grants you permission to modify or |
||||
distribute the Program or its derivative works. These actions are |
||||
prohibited by law if you do not accept this License. Therefore, by |
||||
modifying or distributing the Program (or any work based on the |
||||
Program), you indicate your acceptance of this License to do so, and |
||||
all its terms and conditions for copying, distributing or modifying |
||||
the Program or works based on it. |
||||
|
||||
6. Each time you redistribute the Program (or any work based on the |
||||
Program), the recipient automatically receives a license from the |
||||
original licensor to copy, distribute or modify the Program subject to |
||||
these terms and conditions. You may not impose any further |
||||
restrictions on the recipients' exercise of the rights granted herein. |
||||
You are not responsible for enforcing compliance by third parties to |
||||
this License. |
||||
|
||||
7. If, as a consequence of a court judgment or allegation of patent |
||||
infringement or for any other reason (not limited to patent issues), |
||||
conditions are imposed on you (whether by court order, agreement or |
||||
otherwise) that contradict the conditions of this License, they do not |
||||
excuse you from the conditions of this License. If you cannot |
||||
distribute so as to satisfy simultaneously your obligations under this |
||||
License and any other pertinent obligations, then as a consequence you |
||||
may not distribute the Program at all. For example, if a patent |
||||
license would not permit royalty-free redistribution of the Program by |
||||
all those who receive copies directly or indirectly through you, then |
||||
the only way you could satisfy both it and this License would be to |
||||
refrain entirely from distribution of the Program. |
||||
|
||||
If any portion of this section is held invalid or unenforceable under |
||||
any particular circumstance, the balance of the section is intended to |
||||
apply and the section as a whole is intended to apply in other |
||||
circumstances. |
||||
|
||||
It is not the purpose of this section to induce you to infringe any |
||||
patents or other property right claims or to contest validity of any |
||||
such claims; this section has the sole purpose of protecting the |
||||
integrity of the free software distribution system, which is |
||||
implemented by public license practices. Many people have made |
||||
generous contributions to the wide range of software distributed |
||||
through that system in reliance on consistent application of that |
||||
system; it is up to the author/donor to decide if he or she is willing |
||||
to distribute software through any other system and a licensee cannot |
||||
impose that choice. |
||||
|
||||
This section is intended to make thoroughly clear what is believed to |
||||
be a consequence of the rest of this License. |
||||
|
||||
8. If the distribution and/or use of the Program is restricted in |
||||
certain countries either by patents or by copyrighted interfaces, the |
||||
original copyright holder who places the Program under this License |
||||
may add an explicit geographical distribution limitation excluding |
||||
those countries, so that distribution is permitted only in or among |
||||
countries not thus excluded. In such case, this License incorporates |
||||
the limitation as if written in the body of this License. |
||||
|
||||
9. The Free Software Foundation may publish revised and/or new versions |
||||
of the General Public License from time to time. Such new versions will |
||||
be similar in spirit to the present version, but may differ in detail to |
||||
address new problems or concerns. |
||||
|
||||
Each version is given a distinguishing version number. If the Program |
||||
specifies a version number of this License which applies to it and "any |
||||
later version", you have the option of following the terms and conditions |
||||
either of that version or of any later version published by the Free |
||||
Software Foundation. If the Program does not specify a version number of |
||||
this License, you may choose any version ever published by the Free Software |
||||
Foundation. |
||||
|
||||
10. If you wish to incorporate parts of the Program into other free |
||||
programs whose distribution conditions are different, write to the author |
||||
to ask for permission. For software which is copyrighted by the Free |
||||
Software Foundation, write to the Free Software Foundation; we sometimes |
||||
make exceptions for this. Our decision will be guided by the two goals |
||||
of preserving the free status of all derivatives of our free software and |
||||
of promoting the sharing and reuse of software generally. |
||||
|
||||
NO WARRANTY |
||||
|
||||
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY |
||||
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN |
||||
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES |
||||
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED |
||||
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
||||
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS |
||||
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE |
||||
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, |
||||
REPAIR OR CORRECTION. |
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|
||||
12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING |
||||
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR |
||||
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, |
||||
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING |
||||
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED |
||||
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY |
||||
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER |
||||
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE |
||||
POSSIBILITY OF SUCH DAMAGES. |
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|
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END OF TERMS AND CONDITIONS |
||||
|
||||
How to Apply These Terms to Your New Programs |
||||
|
||||
If you develop a new program, and you want it to be of the greatest |
||||
possible use to the public, the best way to achieve this is to make it |
||||
free software which everyone can redistribute and change under these terms. |
||||
|
||||
To do so, attach the following notices to the program. It is safest |
||||
to attach them to the start of each source file to most effectively |
||||
convey the exclusion of warranty; and each file should have at least |
||||
the "copyright" line and a pointer to where the full notice is found. |
||||
|
||||
{description} |
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Copyright (C) {year} {fullname} |
||||
|
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This program is free software; you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation; either version 2 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program is distributed in the hope that it will be useful, |
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
GNU General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License along |
||||
with this program; if not, write to the Free Software Foundation, Inc., |
||||
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
||||
|
||||
Also add information on how to contact you by electronic and paper mail. |
||||
|
||||
If the program is interactive, make it output a short notice like this |
||||
when it starts in an interactive mode: |
||||
|
||||
Gnomovision version 69, Copyright (C) year name of author |
||||
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. |
||||
This is free software, and you are welcome to redistribute it |
||||
under certain conditions; type `show c' for details. |
||||
|
||||
The hypothetical commands `show w' and `show c' should show the appropriate |
||||
parts of the General Public License. Of course, the commands you use may |
||||
be called something other than `show w' and `show c'; they could even be |
||||
mouse-clicks or menu items--whatever suits your program. |
||||
|
||||
You should also get your employer (if you work as a programmer) or your |
||||
school, if any, to sign a "copyright disclaimer" for the program, if |
||||
necessary. Here is a sample; alter the names: |
||||
|
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Yoyodyne, Inc., hereby disclaims all copyright interest in the program |
||||
`Gnomovision' (which makes passes at compilers) written by James Hacker. |
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|
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{signature of Ty Coon}, 1 April 1989 |
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Ty Coon, President of Vice |
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|
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This General Public License does not permit incorporating your program into |
||||
proprietary programs. If your program is a subroutine library, you may |
||||
consider it more useful to permit linking proprietary applications with the |
||||
library. If this is what you want to do, use the GNU Lesser General |
||||
Public License instead of this License. |
@ -0,0 +1,28 @@ |
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# smtpd |
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smtp server |
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|
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|
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# imapd |
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INTERNET MESSAGE ACCESS PROTOCOL - VERSION 4rev1 server |
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|
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[RFC3501](http://www.faqs.org/rfcs/rfc3501.html) |
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``` |
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typedef enum flags |
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{ |
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Seen = 1, |
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Answered = 2, |
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Flagged = 4, |
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Deleted = 8, |
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Draft = 16, |
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Recent = 32 |
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} |
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``` |
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## 基础能力依赖 |
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* 7层有状态代理:the IMAP client will keep a long TCP connect with server. So the server side need a proxy layer to handle socket connect from client and send real request with session_id to server |
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* 缓存状态机:客户端可订阅邮箱状态 |
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* 语法分析器:IMAP协议的命令使用类似SQL的结构化查询语法 |
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* 树形存储:IMAP协议要求可以建立目录,且目录下可以有子目录,所以需要类似LDAP或NFS的目录设计 |
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|
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client * n => proxy * 1 |
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proxy * n => server * 1 |
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由于server上有事件发生时不知道对应的客户端在哪个proxy server上,所以应该由proxy去注册并正在客户端离开时清理资源 |
@ -0,0 +1,66 @@ |
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package smtpd |
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|
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import ( |
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"fmt" |
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"net" |
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"regexp" |
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"time" |
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) |
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|
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const ( |
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MOD_COMMAND = 1 |
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MOD_HEAD = 2 |
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MOD_BODY = 4 |
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) |
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|
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type smtp_context_t struct { |
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sock net.Conn |
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Address string |
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handlers SmtpServerConfigure |
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conf *ServerConfig |
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Module int |
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Login bool |
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re *regexp.Regexp |
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Email *Mail |
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// 其他
|
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Msg string |
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User string |
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} |
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|
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func initSmtpContext(sock net.Conn, config SmtpServerConfigure) *smtp_context_t { |
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this := &smtp_context_t{ |
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sock: sock, |
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Address: sock.RemoteAddr().String(), |
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handlers: config, |
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conf: config.GetConfig(), |
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Module: MOD_COMMAND, |
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Login: false, |
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re: regexp.MustCompile("<(.+)>"), |
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Email: &Mail{}, |
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} |
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|
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return this |
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} |
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|
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// 发送
|
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func (this *smtp_context_t) Send(content string) { |
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fmt.Fprint(this.sock, content) |
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} |
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|
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// 发送并关闭
|
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func (this *smtp_context_t) End(content string) { |
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fmt.Fprint(this.sock, content) |
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this.sock.Close() |
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} |
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|
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// 问候语
|
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func (this *smtp_context_t) hola() { |
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config := this.conf |
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this.Send(fmt.Sprintf("220 %s %s Server (%s %s Server %s) ready %d\r\n", |
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config.Domain, config.Type, config.Name, config.Type, config.Version, time.Now().Unix(), |
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)) |
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} |
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|
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func (this *smtp_context_t) takeOff() { |
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this.handlers.TakeOff(this.Email) |
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} |
@ -0,0 +1,181 @@ |
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// Simple Mail Transfer Daemon
|
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package smtpd |
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|
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import ( |
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"bufio" |
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"container/list" |
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"crypto/tls" |
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"errors" |
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"fmt" |
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"log" |
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"net" |
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"strings" |
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) |
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|
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type KV struct { |
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Name string |
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Value string |
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} |
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|
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type Mail struct { |
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Sender string |
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Recver list.List |
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Head []KV |
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MailContent string |
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} |
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|
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type ServerConfig struct { |
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Domain string |
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Ip string |
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Name string |
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Type string |
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Version string |
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} |
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|
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type SmtpServerConfigure interface { |
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GetConfig() *ServerConfig |
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Auth(username string, password string) string |
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TakeOff(email *Mail) |
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} |
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|
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type Smtpd struct { |
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config SmtpServerConfigure |
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dict map[string]func(*smtp_context_t) |
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} |
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|
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func TLSSocket(port string, crt string, key string) (net.Listener, error) { |
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cert, err := tls.LoadX509KeyPair(crt, key) |
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if nil != err { |
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return nil, err |
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} |
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ln, err := tls.Listen("tcp", port, &tls.Config { |
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Certificates: []tls.Certificate{cert}, |
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CipherSuites: []uint16 { |
||||
tls.TLS_RSA_WITH_AES_256_CBC_SHA, |
||||
tls.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, |
||||
tls.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, |
||||
tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, |
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tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, |
||||
}, |
||||
PreferServerCipherSuites: true, |
||||
}) |
||||
if nil == err { |
||||
defer ln.Close() |
||||
} |
||||
return ln, err |
||||
} |
||||
|
||||
func Socket(port string) (net.Listener, error) { |
||||
ln, err := net.Listen("tcp", port) |
||||
if nil == err { |
||||
defer ln.Close() |
||||
} |
||||
return ln, err |
||||
} |
||||
|
||||
func New(config SmtpServerConfigure) *Smtpd { |
||||
if nil == config { |
||||
return nil |
||||
} |
||||
return &Smtpd { |
||||
config: config, |
||||
dict: map[string]func(*smtp_context_t) { |
||||
"HELO": helo, |
||||
"EHLO": ehlo, |
||||
"AUTH": auth, |
||||
"QUIT": quit, |
||||
"XCLIENT": xclient, |
||||
"STARTTLS": starttls, |
||||
"HELP": help, |
||||
"NOOP": noop, |
||||
"RSET": rset, |
||||
"MAIL": mail, |
||||
"RCPT": rcpt, |
||||
"DATA": data, |
||||
}, |
||||
} |
||||
} |
||||
|
||||
func (this *Smtpd) task(conn net.Conn) { |
||||
scanner := bufio.NewScanner(conn) |
||||
ctx := initSmtpContext(conn, this.config) |
||||
ctx.hola() |
||||
|
||||
for scanner.Scan() { |
||||
err := scanner.Err() |
||||
if nil != err { |
||||
log.Println("Reading standard input: ", err) |
||||
break |
||||
} |
||||
// 行遍历
|
||||
msg := scanner.Text() |
||||
ctx.Msg = msg |
||||
switch ctx.Module { |
||||
case MOD_COMMAND: |
||||
err = commandHash(this, ctx) |
||||
if nil != err { |
||||
log.Println("Unknow Cmd: ", err) |
||||
} |
||||
case MOD_HEAD: |
||||
dataHead(ctx) |
||||
case MOD_BODY: |
||||
dataBody(ctx) |
||||
} |
||||
} |
||||
} |
||||
|
||||
// 这里使用的是每个链接启动一个新的go程的模型,高并发的话,性能取决于go语言的协程能力
|
||||
func (this *Smtpd) Listen(ln net.Listener) { |
||||
for { |
||||
conn, err := ln.Accept() |
||||
if nil != err { |
||||
log.Println("a connect exception") |
||||
continue |
||||
} |
||||
defer conn.Close() |
||||
go this.task(conn) |
||||
} |
||||
} |
||||
|
||||
func commandHash(this *Smtpd, ctx *smtp_context_t) error { |
||||
var key string |
||||
// 截取第一个单词
|
||||
_, err := fmt.Sscanf(ctx.Msg, "%s", &key) |
||||
if nil != err { |
||||
return err |
||||
} |
||||
// 查找处理方法
|
||||
method, exist := this.dict[key] |
||||
if !exist { |
||||
ctx.Send("method " + key + " not valid\r\n") |
||||
return errors.New("method " + key + " not valid") |
||||
} |
||||
// 执行处理
|
||||
method(ctx) |
||||
return nil |
||||
} |
||||
|
||||
func dataHead(ctx *smtp_context_t) { |
||||
if "" == ctx.Msg { |
||||
ctx.Module = MOD_BODY |
||||
} else if ' ' == ctx.Msg[0] || '\t' == ctx.Msg[0] { |
||||
ctx.Email.Head[len(ctx.Email.Head)-1].Value += "\r\n" + ctx.Msg |
||||
} else { |
||||
attr := strings.Split(ctx.Msg, ": ") |
||||
ele := &KV { |
||||
Name: attr[0], |
||||
Value: attr[1], |
||||
} |
||||
ctx.Email.Head = append(ctx.Email.Head, *ele) |
||||
} |
||||
} |
||||
|
||||
func dataBody(ctx *smtp_context_t) { |
||||
if "." == ctx.Msg { |
||||
ctx.Module = MOD_COMMAND |
||||
ctx.Send("250 2.6.0 Message received\r\n") |
||||
ctx.takeOff() |
||||
return |
||||
} |
||||
ctx.Email.MailContent += ctx.Msg + "\r\n" |
||||
} |
@ -0,0 +1,131 @@ |
||||
package smtpd |
||||
|
||||
import ( |
||||
"encoding/base64" |
||||
"fmt" |
||||
"log" |
||||
"strings" |
||||
"time" |
||||
) |
||||
|
||||
// helo命令
|
||||
func helo(ctx *smtp_context_t) { |
||||
ctx.Module = MOD_COMMAND |
||||
addr := ctx.Address |
||||
name := ctx.Msg[5:] |
||||
|
||||
ctx.Send(fmt.Sprintf("250 %s Hello %s (%s[%s])\r\n", ctx.conf.Domain, name, addr, addr)) |
||||
} |
||||
|
||||
// ehlo命令
|
||||
func ehlo(ctx *smtp_context_t) { |
||||
ctx.Module = MOD_COMMAND |
||||
addr := ctx.Address |
||||
name := ctx.Msg[5:] |
||||
msg := fmt.Sprintf( |
||||
"250-%s Hello %s (%s[%s])\r\n%s\r\n%s\r\n%s\r\n%s\r\n", |
||||
ctx.conf.Domain, name, addr, addr, |
||||
"250-AUTH LOGIN PLAIN", |
||||
"250-AUTH=LOGIN PLAIN", |
||||
"250-PIPELINING", |
||||
"250 ENHANCEDSTATUSCODES", |
||||
) |
||||
ctx.Send(msg) |
||||
} |
||||
|
||||
// 授权
|
||||
func auth(ctx *smtp_context_t) { |
||||
content, err := base64.StdEncoding.DecodeString(ctx.Msg[11:]) |
||||
if nil != err { |
||||
log.Printf("error: %s\n", err.Error()) |
||||
return |
||||
} |
||||
|
||||
for i := 0; i < len(content); i++ { |
||||
if 0 == content[i] { |
||||
content[i] = '\n' |
||||
} |
||||
} |
||||
Auth := ctx.handlers.Auth |
||||
userPassword := strings.Split(string(content), "\n") |
||||
userId := Auth(userPassword[0], userPassword[1]) |
||||
buf := "535 Authentication Failed\r\n" |
||||
if "" != userId { |
||||
ctx.User = userPassword[0] |
||||
buf = "235 Authentication Successful\r\n" |
||||
ctx.Login = true |
||||
log.Println("auth by self") |
||||
} |
||||
ctx.Send(buf) |
||||
} |
||||
|
||||
//
|
||||
func quit(ctx *smtp_context_t) { |
||||
ctx.End("221 2.0.0 " + ctx.conf.Domain + " Service closing transmission channel\r\n") |
||||
} |
||||
|
||||
//
|
||||
func xclient(ctx *smtp_context_t) { |
||||
log.Println("auth by agency") |
||||
ctx.Login = true |
||||
ctx.hola() |
||||
} |
||||
|
||||
//
|
||||
func starttls(ctx *smtp_context_t) { |
||||
ctx.Send("502 5.3.3 STARTTLS is not supported\r\n") |
||||
log.Println("startTTS") |
||||
} |
||||
|
||||
//
|
||||
func help(ctx *smtp_context_t) { |
||||
ctx.Send("502 5.3.3 HELP is not supported\r\n") |
||||
} |
||||
|
||||
//
|
||||
func noop(ctx *smtp_context_t) { |
||||
ctx.Send("250 2.0.0 OK\r\n") |
||||
log.Println("noop") |
||||
} |
||||
|
||||
//
|
||||
func rset(ctx *smtp_context_t) { |
||||
ctx.Send("250 2.0.0 OK\r\n") |
||||
log.Println("rset") |
||||
} |
||||
|
||||
//
|
||||
func mail(ctx *smtp_context_t) { |
||||
ctx.Email.Sender = ctx.re.FindStringSubmatch(ctx.Msg)[1] |
||||
clientDomain := strings.Split(ctx.Email.Sender, "@")[1] |
||||
if (clientDomain == ctx.conf.Domain) != (!ctx.Login) { // 本域已登录 or 外域未登录
|
||||
ctx.Send("250 2.1.0 Sender <" + ctx.Email.Sender + "> OK\r\n") |
||||
return |
||||
} |
||||
ctx.Send("530 5.7.1 Authentication Required\r\n") |
||||
} |
||||
|
||||
//
|
||||
func rcpt(ctx *smtp_context_t) { |
||||
recver := ctx.re.FindStringSubmatch(ctx.Msg)[1] |
||||
if strings.Split(recver, "@")[1] != ctx.conf.Domain && !ctx.Login { // 非登录用户 to 外域
|
||||
ctx.Send("530 5.7.1 Authentication Required\r\n") |
||||
return |
||||
} |
||||
ctx.Email.Recver.PushBack(recver) |
||||
ctx.Send("250 2.1.5 Recipient <" + recver + "> OK\r\n") |
||||
} |
||||
|
||||
//
|
||||
func data(ctx *smtp_context_t) { |
||||
format := "from %s ([%s]) by %s over TLS secured channel with %s(%s)\r\n\t%d" |
||||
ctx.Module = MOD_HEAD |
||||
config := ctx.conf |
||||
ele := &KV { |
||||
Name: "Received", |
||||
Value: fmt.Sprintf(format, config.Domain, config.Ip, config.Domain, config.Name, config.Version, time.Now().Unix()), |
||||
} |
||||
ctx.Email.Head = append(ctx.Email.Head, *ele) |
||||
|
||||
ctx.Send("354 Ok Send data ending with <CRLF>.<CRLF>\r\n") |
||||
} |
Loading…
Reference in new issue