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源文雨
17
.gitignore
vendored
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17
.gitignore
vendored
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|
|||||||
|
# Binaries for programs and plugins
|
||||||
|
*.exe
|
||||||
|
*.exe~
|
||||||
|
*.dll
|
||||||
|
*.so
|
||||||
|
*.dylib
|
||||||
|
|
||||||
|
# Test binary, built with `go test -c`
|
||||||
|
*.test
|
||||||
|
|
||||||
|
# Output of the go coverage tool, specifically when used with LiteIDE
|
||||||
|
*.out
|
||||||
|
|
||||||
|
# Dependency directories (remove the comment below to include it)
|
||||||
|
# vendor/
|
||||||
|
|
||||||
|
.DS_Store
|
||||||
661
LICENSE
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661
LICENSE
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@@ -0,0 +1,661 @@
|
|||||||
|
GNU AFFERO GENERAL PUBLIC LICENSE
|
||||||
|
Version 3, 19 November 2007
|
||||||
|
|
||||||
|
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
|
||||||
|
Everyone is permitted to copy and distribute verbatim copies
|
||||||
|
of this license document, but changing it is not allowed.
|
||||||
|
|
||||||
|
Preamble
|
||||||
|
|
||||||
|
The GNU Affero General Public License is a free, copyleft license for
|
||||||
|
software and other kinds of works, specifically designed to ensure
|
||||||
|
cooperation with the community in the case of network server software.
|
||||||
|
|
||||||
|
The licenses for most software and other practical works are designed
|
||||||
|
to take away your freedom to share and change the works. By contrast,
|
||||||
|
our General Public Licenses are intended to guarantee your freedom to
|
||||||
|
share and change all versions of a program--to make sure it remains free
|
||||||
|
software for all its users.
|
||||||
|
|
||||||
|
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
|
||||||
|
them 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.
|
||||||
|
|
||||||
|
Developers that use our General Public Licenses protect your rights
|
||||||
|
with two steps: (1) assert copyright on the software, and (2) offer
|
||||||
|
you this License which gives you legal permission to copy, distribute
|
||||||
|
and/or modify the software.
|
||||||
|
|
||||||
|
A secondary benefit of defending all users' freedom is that
|
||||||
|
improvements made in alternate versions of the program, if they
|
||||||
|
receive widespread use, become available for other developers to
|
||||||
|
incorporate. Many developers of free software are heartened and
|
||||||
|
encouraged by the resulting cooperation. However, in the case of
|
||||||
|
software used on network servers, this result may fail to come about.
|
||||||
|
The GNU General Public License permits making a modified version and
|
||||||
|
letting the public access it on a server without ever releasing its
|
||||||
|
source code to the public.
|
||||||
|
|
||||||
|
The GNU Affero General Public License is designed specifically to
|
||||||
|
ensure that, in such cases, the modified source code becomes available
|
||||||
|
to the community. It requires the operator of a network server to
|
||||||
|
provide the source code of the modified version running there to the
|
||||||
|
users of that server. Therefore, public use of a modified version, on
|
||||||
|
a publicly accessible server, gives the public access to the source
|
||||||
|
code of the modified version.
|
||||||
|
|
||||||
|
An older license, called the Affero General Public License and
|
||||||
|
published by Affero, was designed to accomplish similar goals. This is
|
||||||
|
a different license, not a version of the Affero GPL, but Affero has
|
||||||
|
released a new version of the Affero GPL which permits relicensing under
|
||||||
|
this license.
|
||||||
|
|
||||||
|
The precise terms and conditions for copying, distribution and
|
||||||
|
modification follow.
|
||||||
|
|
||||||
|
TERMS AND CONDITIONS
|
||||||
|
|
||||||
|
0. Definitions.
|
||||||
|
|
||||||
|
"This License" refers to version 3 of the GNU Affero General Public License.
|
||||||
|
|
||||||
|
"Copyright" also means copyright-like laws that apply to other kinds of
|
||||||
|
works, such as semiconductor masks.
|
||||||
|
|
||||||
|
"The Program" refers to any copyrightable work licensed under this
|
||||||
|
License. Each licensee is addressed as "you". "Licensees" and
|
||||||
|
"recipients" may be individuals or organizations.
|
||||||
|
|
||||||
|
To "modify" a work means to copy from or adapt all or part of the work
|
||||||
|
in a fashion requiring copyright permission, other than the making of an
|
||||||
|
exact copy. The resulting work is called a "modified version" of the
|
||||||
|
earlier work or a work "based on" the earlier work.
|
||||||
|
|
||||||
|
A "covered work" means either the unmodified Program or a work based
|
||||||
|
on the Program.
|
||||||
|
|
||||||
|
To "propagate" a work means to do anything with it that, without
|
||||||
|
permission, would make you directly or secondarily liable for
|
||||||
|
infringement under applicable copyright law, except executing it on a
|
||||||
|
computer or modifying a private copy. Propagation includes copying,
|
||||||
|
distribution (with or without modification), making available to the
|
||||||
|
public, and in some countries other activities as well.
|
||||||
|
|
||||||
|
To "convey" a work means any kind of propagation that enables other
|
||||||
|
parties to make or receive copies. Mere interaction with a user through
|
||||||
|
a computer network, with no transfer of a copy, is not conveying.
|
||||||
|
|
||||||
|
An interactive user interface displays "Appropriate Legal Notices"
|
||||||
|
to the extent that it includes a convenient and prominently visible
|
||||||
|
feature that (1) displays an appropriate copyright notice, and (2)
|
||||||
|
tells the user that there is no warranty for the work (except to the
|
||||||
|
extent that warranties are provided), that licensees may convey the
|
||||||
|
work under this License, and how to view a copy of this License. If
|
||||||
|
the interface presents a list of user commands or options, such as a
|
||||||
|
menu, a prominent item in the list meets this criterion.
|
||||||
|
|
||||||
|
1. Source Code.
|
||||||
|
|
||||||
|
The "source code" for a work means the preferred form of the work
|
||||||
|
for making modifications to it. "Object code" means any non-source
|
||||||
|
form of a work.
|
||||||
|
|
||||||
|
A "Standard Interface" means an interface that either is an official
|
||||||
|
standard defined by a recognized standards body, or, in the case of
|
||||||
|
interfaces specified for a particular programming language, one that
|
||||||
|
is widely used among developers working in that language.
|
||||||
|
|
||||||
|
The "System Libraries" of an executable work include anything, other
|
||||||
|
than the work as a whole, that (a) is included in the normal form of
|
||||||
|
packaging a Major Component, but which is not part of that Major
|
||||||
|
Component, and (b) serves only to enable use of the work with that
|
||||||
|
Major Component, or to implement a Standard Interface for which an
|
||||||
|
implementation is available to the public in source code form. A
|
||||||
|
"Major Component", in this context, means a major essential component
|
||||||
|
(kernel, window system, and so on) of the specific operating system
|
||||||
|
(if any) on which the executable work runs, or a compiler used to
|
||||||
|
produce the work, or an object code interpreter used to run it.
|
||||||
|
|
||||||
|
The "Corresponding Source" for a work in object code form means all
|
||||||
|
the source code needed to generate, install, and (for an executable
|
||||||
|
work) run the object code and to modify the work, including scripts to
|
||||||
|
control those activities. However, it does not include the work's
|
||||||
|
System Libraries, or general-purpose tools or generally available free
|
||||||
|
programs which are used unmodified in performing those activities but
|
||||||
|
which are not part of the work. For example, Corresponding Source
|
||||||
|
includes interface definition files associated with source files for
|
||||||
|
the work, and the source code for shared libraries and dynamically
|
||||||
|
linked subprograms that the work is specifically designed to require,
|
||||||
|
such as by intimate data communication or control flow between those
|
||||||
|
subprograms and other parts of the work.
|
||||||
|
|
||||||
|
The Corresponding Source need not include anything that users
|
||||||
|
can regenerate automatically from other parts of the Corresponding
|
||||||
|
Source.
|
||||||
|
|
||||||
|
The Corresponding Source for a work in source code form is that
|
||||||
|
same work.
|
||||||
|
|
||||||
|
2. Basic Permissions.
|
||||||
|
|
||||||
|
All rights granted under this License are granted for the term of
|
||||||
|
copyright on the Program, and are irrevocable provided the stated
|
||||||
|
conditions are met. This License explicitly affirms your unlimited
|
||||||
|
permission to run the unmodified Program. The output from running a
|
||||||
|
covered work is covered by this License only if the output, given its
|
||||||
|
content, constitutes a covered work. This License acknowledges your
|
||||||
|
rights of fair use or other equivalent, as provided by copyright law.
|
||||||
|
|
||||||
|
You may make, run and propagate covered works that you do not
|
||||||
|
convey, without conditions so long as your license otherwise remains
|
||||||
|
in force. You may convey covered works to others for the sole purpose
|
||||||
|
of having them make modifications exclusively for you, or provide you
|
||||||
|
with facilities for running those works, provided that you comply with
|
||||||
|
the terms of this License in conveying all material for which you do
|
||||||
|
not control copyright. Those thus making or running the covered works
|
||||||
|
for you must do so exclusively on your behalf, under your direction
|
||||||
|
and control, on terms that prohibit them from making any copies of
|
||||||
|
your copyrighted material outside their relationship with you.
|
||||||
|
|
||||||
|
Conveying under any other circumstances is permitted solely under
|
||||||
|
the conditions stated below. Sublicensing is not allowed; section 10
|
||||||
|
makes it unnecessary.
|
||||||
|
|
||||||
|
3. Protecting Users' Legal Rights From Anti-Circumvention Law.
|
||||||
|
|
||||||
|
No covered work shall be deemed part of an effective technological
|
||||||
|
measure under any applicable law fulfilling obligations under article
|
||||||
|
11 of the WIPO copyright treaty adopted on 20 December 1996, or
|
||||||
|
similar laws prohibiting or restricting circumvention of such
|
||||||
|
measures.
|
||||||
|
|
||||||
|
When you convey a covered work, you waive any legal power to forbid
|
||||||
|
circumvention of technological measures to the extent such circumvention
|
||||||
|
is effected by exercising rights under this License with respect to
|
||||||
|
the covered work, and you disclaim any intention to limit operation or
|
||||||
|
modification of the work as a means of enforcing, against the work's
|
||||||
|
users, your or third parties' legal rights to forbid circumvention of
|
||||||
|
technological measures.
|
||||||
|
|
||||||
|
4. Conveying Verbatim Copies.
|
||||||
|
|
||||||
|
You may convey 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;
|
||||||
|
keep intact all notices stating that this License and any
|
||||||
|
non-permissive terms added in accord with section 7 apply to the code;
|
||||||
|
keep intact all notices of the absence of any warranty; and give all
|
||||||
|
recipients a copy of this License along with the Program.
|
||||||
|
|
||||||
|
You may charge any price or no price for each copy that you convey,
|
||||||
|
and you may offer support or warranty protection for a fee.
|
||||||
|
|
||||||
|
5. Conveying Modified Source Versions.
|
||||||
|
|
||||||
|
You may convey a work based on the Program, or the modifications to
|
||||||
|
produce it from the Program, in the form of source code under the
|
||||||
|
terms of section 4, provided that you also meet all of these conditions:
|
||||||
|
|
||||||
|
a) The work must carry prominent notices stating that you modified
|
||||||
|
it, and giving a relevant date.
|
||||||
|
|
||||||
|
b) The work must carry prominent notices stating that it is
|
||||||
|
released under this License and any conditions added under section
|
||||||
|
7. This requirement modifies the requirement in section 4 to
|
||||||
|
"keep intact all notices".
|
||||||
|
|
||||||
|
c) You must license the entire work, as a whole, under this
|
||||||
|
License to anyone who comes into possession of a copy. This
|
||||||
|
License will therefore apply, along with any applicable section 7
|
||||||
|
additional terms, to the whole of the work, and all its parts,
|
||||||
|
regardless of how they are packaged. This License gives no
|
||||||
|
permission to license the work in any other way, but it does not
|
||||||
|
invalidate such permission if you have separately received it.
|
||||||
|
|
||||||
|
d) If the work has interactive user interfaces, each must display
|
||||||
|
Appropriate Legal Notices; however, if the Program has interactive
|
||||||
|
interfaces that do not display Appropriate Legal Notices, your
|
||||||
|
work need not make them do so.
|
||||||
|
|
||||||
|
A compilation of a covered work with other separate and independent
|
||||||
|
works, which are not by their nature extensions of the covered work,
|
||||||
|
and which are not combined with it such as to form a larger program,
|
||||||
|
in or on a volume of a storage or distribution medium, is called an
|
||||||
|
"aggregate" if the compilation and its resulting copyright are not
|
||||||
|
used to limit the access or legal rights of the compilation's users
|
||||||
|
beyond what the individual works permit. Inclusion of a covered work
|
||||||
|
in an aggregate does not cause this License to apply to the other
|
||||||
|
parts of the aggregate.
|
||||||
|
|
||||||
|
6. Conveying Non-Source Forms.
|
||||||
|
|
||||||
|
You may convey a covered work in object code form under the terms
|
||||||
|
of sections 4 and 5, provided that you also convey the
|
||||||
|
machine-readable Corresponding Source under the terms of this License,
|
||||||
|
in one of these ways:
|
||||||
|
|
||||||
|
a) Convey the object code in, or embodied in, a physical product
|
||||||
|
(including a physical distribution medium), accompanied by the
|
||||||
|
Corresponding Source fixed on a durable physical medium
|
||||||
|
customarily used for software interchange.
|
||||||
|
|
||||||
|
b) Convey the object code in, or embodied in, a physical product
|
||||||
|
(including a physical distribution medium), accompanied by a
|
||||||
|
written offer, valid for at least three years and valid for as
|
||||||
|
long as you offer spare parts or customer support for that product
|
||||||
|
model, to give anyone who possesses the object code either (1) a
|
||||||
|
copy of the Corresponding Source for all the software in the
|
||||||
|
product that is covered by this License, on a durable physical
|
||||||
|
medium customarily used for software interchange, for a price no
|
||||||
|
more than your reasonable cost of physically performing this
|
||||||
|
conveying of source, or (2) access to copy the
|
||||||
|
Corresponding Source from a network server at no charge.
|
||||||
|
|
||||||
|
c) Convey individual copies of the object code with a copy of the
|
||||||
|
written offer to provide the Corresponding Source. This
|
||||||
|
alternative is allowed only occasionally and noncommercially, and
|
||||||
|
only if you received the object code with such an offer, in accord
|
||||||
|
with subsection 6b.
|
||||||
|
|
||||||
|
d) Convey the object code by offering access from a designated
|
||||||
|
place (gratis or for a charge), and offer equivalent access to the
|
||||||
|
Corresponding Source in the same way through the same place at no
|
||||||
|
further charge. You need not require recipients to copy the
|
||||||
|
Corresponding Source along with the object code. If the place to
|
||||||
|
copy the object code is a network server, the Corresponding Source
|
||||||
|
may be on a different server (operated by you or a third party)
|
||||||
|
that supports equivalent copying facilities, provided you maintain
|
||||||
|
clear directions next to the object code saying where to find the
|
||||||
|
Corresponding Source. Regardless of what server hosts the
|
||||||
|
Corresponding Source, you remain obligated to ensure that it is
|
||||||
|
available for as long as needed to satisfy these requirements.
|
||||||
|
|
||||||
|
e) Convey the object code using peer-to-peer transmission, provided
|
||||||
|
you inform other peers where the object code and Corresponding
|
||||||
|
Source of the work are being offered to the general public at no
|
||||||
|
charge under subsection 6d.
|
||||||
|
|
||||||
|
A separable portion of the object code, whose source code is excluded
|
||||||
|
from the Corresponding Source as a System Library, need not be
|
||||||
|
included in conveying the object code work.
|
||||||
|
|
||||||
|
A "User Product" is either (1) a "consumer product", which means any
|
||||||
|
tangible personal property which is normally used for personal, family,
|
||||||
|
or household purposes, or (2) anything designed or sold for incorporation
|
||||||
|
into a dwelling. In determining whether a product is a consumer product,
|
||||||
|
doubtful cases shall be resolved in favor of coverage. For a particular
|
||||||
|
product received by a particular user, "normally used" refers to a
|
||||||
|
typical or common use of that class of product, regardless of the status
|
||||||
|
of the particular user or of the way in which the particular user
|
||||||
|
actually uses, or expects or is expected to use, the product. A product
|
||||||
|
is a consumer product regardless of whether the product has substantial
|
||||||
|
commercial, industrial or non-consumer uses, unless such uses represent
|
||||||
|
the only significant mode of use of the product.
|
||||||
|
|
||||||
|
"Installation Information" for a User Product means any methods,
|
||||||
|
procedures, authorization keys, or other information required to install
|
||||||
|
and execute modified versions of a covered work in that User Product from
|
||||||
|
a modified version of its Corresponding Source. The information must
|
||||||
|
suffice to ensure that the continued functioning of the modified object
|
||||||
|
code is in no case prevented or interfered with solely because
|
||||||
|
modification has been made.
|
||||||
|
|
||||||
|
If you convey an object code work under this section in, or with, or
|
||||||
|
specifically for use in, a User Product, and the conveying occurs as
|
||||||
|
part of a transaction in which the right of possession and use of the
|
||||||
|
User Product is transferred to the recipient in perpetuity or for a
|
||||||
|
fixed term (regardless of how the transaction is characterized), the
|
||||||
|
Corresponding Source conveyed under this section must be accompanied
|
||||||
|
by the Installation Information. But this requirement does not apply
|
||||||
|
if neither you nor any third party retains the ability to install
|
||||||
|
modified object code on the User Product (for example, the work has
|
||||||
|
been installed in ROM).
|
||||||
|
|
||||||
|
The requirement to provide Installation Information does not include a
|
||||||
|
requirement to continue to provide support service, warranty, or updates
|
||||||
|
for a work that has been modified or installed by the recipient, or for
|
||||||
|
the User Product in which it has been modified or installed. Access to a
|
||||||
|
network may be denied when the modification itself materially and
|
||||||
|
adversely affects the operation of the network or violates the rules and
|
||||||
|
protocols for communication across the network.
|
||||||
|
|
||||||
|
Corresponding Source conveyed, and Installation Information provided,
|
||||||
|
in accord with this section must be in a format that is publicly
|
||||||
|
documented (and with an implementation available to the public in
|
||||||
|
source code form), and must require no special password or key for
|
||||||
|
unpacking, reading or copying.
|
||||||
|
|
||||||
|
7. Additional Terms.
|
||||||
|
|
||||||
|
"Additional permissions" are terms that supplement the terms of this
|
||||||
|
License by making exceptions from one or more of its conditions.
|
||||||
|
Additional permissions that are applicable to the entire Program shall
|
||||||
|
be treated as though they were included in this License, to the extent
|
||||||
|
that they are valid under applicable law. If additional permissions
|
||||||
|
apply only to part of the Program, that part may be used separately
|
||||||
|
under those permissions, but the entire Program remains governed by
|
||||||
|
this License without regard to the additional permissions.
|
||||||
|
|
||||||
|
When you convey a copy of a covered work, you may at your option
|
||||||
|
remove any additional permissions from that copy, or from any part of
|
||||||
|
it. (Additional permissions may be written to require their own
|
||||||
|
removal in certain cases when you modify the work.) You may place
|
||||||
|
additional permissions on material, added by you to a covered work,
|
||||||
|
for which you have or can give appropriate copyright permission.
|
||||||
|
|
||||||
|
Notwithstanding any other provision of this License, for material you
|
||||||
|
add to a covered work, you may (if authorized by the copyright holders of
|
||||||
|
that material) supplement the terms of this License with terms:
|
||||||
|
|
||||||
|
a) Disclaiming warranty or limiting liability differently from the
|
||||||
|
terms of sections 15 and 16 of this License; or
|
||||||
|
|
||||||
|
b) Requiring preservation of specified reasonable legal notices or
|
||||||
|
author attributions in that material or in the Appropriate Legal
|
||||||
|
Notices displayed by works containing it; or
|
||||||
|
|
||||||
|
c) Prohibiting misrepresentation of the origin of that material, or
|
||||||
|
requiring that modified versions of such material be marked in
|
||||||
|
reasonable ways as different from the original version; or
|
||||||
|
|
||||||
|
d) Limiting the use for publicity purposes of names of licensors or
|
||||||
|
authors of the material; or
|
||||||
|
|
||||||
|
e) Declining to grant rights under trademark law for use of some
|
||||||
|
trade names, trademarks, or service marks; or
|
||||||
|
|
||||||
|
f) Requiring indemnification of licensors and authors of that
|
||||||
|
material by anyone who conveys the material (or modified versions of
|
||||||
|
it) with contractual assumptions of liability to the recipient, for
|
||||||
|
any liability that these contractual assumptions directly impose on
|
||||||
|
those licensors and authors.
|
||||||
|
|
||||||
|
All other non-permissive additional terms are considered "further
|
||||||
|
restrictions" within the meaning of section 10. If the Program as you
|
||||||
|
received it, or any part of it, contains a notice stating that it is
|
||||||
|
governed by this License along with a term that is a further
|
||||||
|
restriction, you may remove that term. If a license document contains
|
||||||
|
a further restriction but permits relicensing or conveying under this
|
||||||
|
License, you may add to a covered work material governed by the terms
|
||||||
|
of that license document, provided that the further restriction does
|
||||||
|
not survive such relicensing or conveying.
|
||||||
|
|
||||||
|
If you add terms to a covered work in accord with this section, you
|
||||||
|
must place, in the relevant source files, a statement of the
|
||||||
|
additional terms that apply to those files, or a notice indicating
|
||||||
|
where to find the applicable terms.
|
||||||
|
|
||||||
|
Additional terms, permissive or non-permissive, may be stated in the
|
||||||
|
form of a separately written license, or stated as exceptions;
|
||||||
|
the above requirements apply either way.
|
||||||
|
|
||||||
|
8. Termination.
|
||||||
|
|
||||||
|
You may not propagate or modify a covered work except as expressly
|
||||||
|
provided under this License. Any attempt otherwise to propagate or
|
||||||
|
modify it is void, and will automatically terminate your rights under
|
||||||
|
this License (including any patent licenses granted under the third
|
||||||
|
paragraph of section 11).
|
||||||
|
|
||||||
|
However, if you cease all violation of this License, then your
|
||||||
|
license from a particular copyright holder is reinstated (a)
|
||||||
|
provisionally, unless and until the copyright holder explicitly and
|
||||||
|
finally terminates your license, and (b) permanently, if the copyright
|
||||||
|
holder fails to notify you of the violation by some reasonable means
|
||||||
|
prior to 60 days after the cessation.
|
||||||
|
|
||||||
|
Moreover, your license from a particular copyright holder is
|
||||||
|
reinstated permanently if the copyright holder notifies you of the
|
||||||
|
violation by some reasonable means, this is the first time you have
|
||||||
|
received notice of violation of this License (for any work) from that
|
||||||
|
copyright holder, and you cure the violation prior to 30 days after
|
||||||
|
your receipt of the notice.
|
||||||
|
|
||||||
|
Termination of your rights under this section does not terminate the
|
||||||
|
licenses of parties who have received copies or rights from you under
|
||||||
|
this License. If your rights have been terminated and not permanently
|
||||||
|
reinstated, you do not qualify to receive new licenses for the same
|
||||||
|
material under section 10.
|
||||||
|
|
||||||
|
9. Acceptance Not Required for Having Copies.
|
||||||
|
|
||||||
|
You are not required to accept this License in order to receive or
|
||||||
|
run a copy of the Program. Ancillary propagation of a covered work
|
||||||
|
occurring solely as a consequence of using peer-to-peer transmission
|
||||||
|
to receive a copy likewise does not require acceptance. However,
|
||||||
|
nothing other than this License grants you permission to propagate or
|
||||||
|
modify any covered work. These actions infringe copyright if you do
|
||||||
|
not accept this License. Therefore, by modifying or propagating a
|
||||||
|
covered work, you indicate your acceptance of this License to do so.
|
||||||
|
|
||||||
|
10. Automatic Licensing of Downstream Recipients.
|
||||||
|
|
||||||
|
Each time you convey a covered work, the recipient automatically
|
||||||
|
receives a license from the original licensors, to run, modify and
|
||||||
|
propagate that work, subject to this License. You are not responsible
|
||||||
|
for enforcing compliance by third parties with this License.
|
||||||
|
|
||||||
|
An "entity transaction" is a transaction transferring control of an
|
||||||
|
organization, or substantially all assets of one, or subdividing an
|
||||||
|
organization, or merging organizations. If propagation of a covered
|
||||||
|
work results from an entity transaction, each party to that
|
||||||
|
transaction who receives a copy of the work also receives whatever
|
||||||
|
licenses to the work the party's predecessor in interest had or could
|
||||||
|
give under the previous paragraph, plus a right to possession of the
|
||||||
|
Corresponding Source of the work from the predecessor in interest, if
|
||||||
|
the predecessor has it or can get it with reasonable efforts.
|
||||||
|
|
||||||
|
You may not impose any further restrictions on the exercise of the
|
||||||
|
rights granted or affirmed under this License. For example, you may
|
||||||
|
not impose a license fee, royalty, or other charge for exercise of
|
||||||
|
rights granted under this License, and you may not initiate litigation
|
||||||
|
(including a cross-claim or counterclaim in a lawsuit) alleging that
|
||||||
|
any patent claim is infringed by making, using, selling, offering for
|
||||||
|
sale, or importing the Program or any portion of it.
|
||||||
|
|
||||||
|
11. Patents.
|
||||||
|
|
||||||
|
A "contributor" is a copyright holder who authorizes use under this
|
||||||
|
License of the Program or a work on which the Program is based. The
|
||||||
|
work thus licensed is called the contributor's "contributor version".
|
||||||
|
|
||||||
|
A contributor's "essential patent claims" are all patent claims
|
||||||
|
owned or controlled by the contributor, whether already acquired or
|
||||||
|
hereafter acquired, that would be infringed by some manner, permitted
|
||||||
|
by this License, of making, using, or selling its contributor version,
|
||||||
|
but do not include claims that would be infringed only as a
|
||||||
|
consequence of further modification of the contributor version. For
|
||||||
|
purposes of this definition, "control" includes the right to grant
|
||||||
|
patent sublicenses in a manner consistent with the requirements of
|
||||||
|
this License.
|
||||||
|
|
||||||
|
Each contributor grants you a non-exclusive, worldwide, royalty-free
|
||||||
|
patent license under the contributor's essential patent claims, to
|
||||||
|
make, use, sell, offer for sale, import and otherwise run, modify and
|
||||||
|
propagate the contents of its contributor version.
|
||||||
|
|
||||||
|
In the following three paragraphs, a "patent license" is any express
|
||||||
|
agreement or commitment, however denominated, not to enforce a patent
|
||||||
|
(such as an express permission to practice a patent or covenant not to
|
||||||
|
sue for patent infringement). To "grant" such a patent license to a
|
||||||
|
party means to make such an agreement or commitment not to enforce a
|
||||||
|
patent against the party.
|
||||||
|
|
||||||
|
If you convey a covered work, knowingly relying on a patent license,
|
||||||
|
and the Corresponding Source of the work is not available for anyone
|
||||||
|
to copy, free of charge and under the terms of this License, through a
|
||||||
|
publicly available network server or other readily accessible means,
|
||||||
|
then you must either (1) cause the Corresponding Source to be so
|
||||||
|
available, or (2) arrange to deprive yourself of the benefit of the
|
||||||
|
patent license for this particular work, or (3) arrange, in a manner
|
||||||
|
consistent with the requirements of this License, to extend the patent
|
||||||
|
license to downstream recipients. "Knowingly relying" means you have
|
||||||
|
actual knowledge that, but for the patent license, your conveying the
|
||||||
|
covered work in a country, or your recipient's use of the covered work
|
||||||
|
in a country, would infringe one or more identifiable patents in that
|
||||||
|
country that you have reason to believe are valid.
|
||||||
|
|
||||||
|
If, pursuant to or in connection with a single transaction or
|
||||||
|
arrangement, you convey, or propagate by procuring conveyance of, a
|
||||||
|
covered work, and grant a patent license to some of the parties
|
||||||
|
receiving the covered work authorizing them to use, propagate, modify
|
||||||
|
or convey a specific copy of the covered work, then the patent license
|
||||||
|
you grant is automatically extended to all recipients of the covered
|
||||||
|
work and works based on it.
|
||||||
|
|
||||||
|
A patent license is "discriminatory" if it does not include within
|
||||||
|
the scope of its coverage, prohibits the exercise of, or is
|
||||||
|
conditioned on the non-exercise of one or more of the rights that are
|
||||||
|
specifically granted under this License. You may not convey a covered
|
||||||
|
work if you are a party to an arrangement with a third party that is
|
||||||
|
in the business of distributing software, under which you make payment
|
||||||
|
to the third party based on the extent of your activity of conveying
|
||||||
|
the work, and under which the third party grants, to any of the
|
||||||
|
parties who would receive the covered work from you, a discriminatory
|
||||||
|
patent license (a) in connection with copies of the covered work
|
||||||
|
conveyed by you (or copies made from those copies), or (b) primarily
|
||||||
|
for and in connection with specific products or compilations that
|
||||||
|
contain the covered work, unless you entered into that arrangement,
|
||||||
|
or that patent license was granted, prior to 28 March 2007.
|
||||||
|
|
||||||
|
Nothing in this License shall be construed as excluding or limiting
|
||||||
|
any implied license or other defenses to infringement that may
|
||||||
|
otherwise be available to you under applicable patent law.
|
||||||
|
|
||||||
|
12. No Surrender of Others' Freedom.
|
||||||
|
|
||||||
|
If 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 convey a
|
||||||
|
covered work so as to satisfy simultaneously your obligations under this
|
||||||
|
License and any other pertinent obligations, then as a consequence you may
|
||||||
|
not convey it at all. For example, if you agree to terms that obligate you
|
||||||
|
to collect a royalty for further conveying from those to whom you convey
|
||||||
|
the Program, the only way you could satisfy both those terms and this
|
||||||
|
License would be to refrain entirely from conveying the Program.
|
||||||
|
|
||||||
|
13. Remote Network Interaction; Use with the GNU General Public License.
|
||||||
|
|
||||||
|
Notwithstanding any other provision of this License, if you modify the
|
||||||
|
Program, your modified version must prominently offer all users
|
||||||
|
interacting with it remotely through a computer network (if your version
|
||||||
|
supports such interaction) an opportunity to receive the Corresponding
|
||||||
|
Source of your version by providing access to the Corresponding Source
|
||||||
|
from a network server at no charge, through some standard or customary
|
||||||
|
means of facilitating copying of software. This Corresponding Source
|
||||||
|
shall include the Corresponding Source for any work covered by version 3
|
||||||
|
of the GNU General Public License that is incorporated pursuant to the
|
||||||
|
following paragraph.
|
||||||
|
|
||||||
|
Notwithstanding any other provision of this License, you have
|
||||||
|
permission to link or combine any covered work with a work licensed
|
||||||
|
under version 3 of the GNU General Public License into a single
|
||||||
|
combined work, and to convey the resulting work. The terms of this
|
||||||
|
License will continue to apply to the part which is the covered work,
|
||||||
|
but the work with which it is combined will remain governed by version
|
||||||
|
3 of the GNU General Public License.
|
||||||
|
|
||||||
|
14. Revised Versions of this License.
|
||||||
|
|
||||||
|
The Free Software Foundation may publish revised and/or new versions of
|
||||||
|
the GNU Affero 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 that a certain numbered version of the GNU Affero General
|
||||||
|
Public License "or any later version" applies to it, you have the
|
||||||
|
option of following the terms and conditions either of that numbered
|
||||||
|
version or of any later version published by the Free Software
|
||||||
|
Foundation. If the Program does not specify a version number of the
|
||||||
|
GNU Affero General Public License, you may choose any version ever published
|
||||||
|
by the Free Software Foundation.
|
||||||
|
|
||||||
|
If the Program specifies that a proxy can decide which future
|
||||||
|
versions of the GNU Affero General Public License can be used, that proxy's
|
||||||
|
public statement of acceptance of a version permanently authorizes you
|
||||||
|
to choose that version for the Program.
|
||||||
|
|
||||||
|
Later license versions may give you additional or different
|
||||||
|
permissions. However, no additional obligations are imposed on any
|
||||||
|
author or copyright holder as a result of your choosing to follow a
|
||||||
|
later version.
|
||||||
|
|
||||||
|
15. Disclaimer of Warranty.
|
||||||
|
|
||||||
|
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.
|
||||||
|
|
||||||
|
16. Limitation of Liability.
|
||||||
|
|
||||||
|
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
|
||||||
|
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
|
||||||
|
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.
|
||||||
|
|
||||||
|
17. Interpretation of Sections 15 and 16.
|
||||||
|
|
||||||
|
If the disclaimer of warranty and limitation of liability provided
|
||||||
|
above cannot be given local legal effect according to their terms,
|
||||||
|
reviewing courts shall apply local law that most closely approximates
|
||||||
|
an absolute waiver of all civil liability in connection with the
|
||||||
|
Program, unless a warranty or assumption of liability accompanies a
|
||||||
|
copy of the Program in return for a fee.
|
||||||
|
|
||||||
|
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
|
||||||
|
state the exclusion of warranty; and each file should have at least
|
||||||
|
the "copyright" line and a pointer to where the full notice is found.
|
||||||
|
|
||||||
|
<one line to give the program's name and a brief idea of what it does.>
|
||||||
|
Copyright (C) <year> <name of author>
|
||||||
|
|
||||||
|
This program is free software: you can redistribute it and/or modify
|
||||||
|
it under the terms of the GNU Affero General Public License as published
|
||||||
|
by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
|
||||||
|
|
||||||
|
You should have received a copy of the GNU Affero General Public License
|
||||||
|
along with this program. If not, see <https://www.gnu.org/licenses/>.
|
||||||
|
|
||||||
|
Also add information on how to contact you by electronic and paper mail.
|
||||||
|
|
||||||
|
If your software can interact with users remotely through a computer
|
||||||
|
network, you should also make sure that it provides a way for users to
|
||||||
|
get its source. For example, if your program is a web application, its
|
||||||
|
interface could display a "Source" link that leads users to an archive
|
||||||
|
of the code. There are many ways you could offer source, and different
|
||||||
|
solutions will be better for different programs; see section 13 for the
|
||||||
|
specific requirements.
|
||||||
|
|
||||||
|
You should also get your employer (if you work as a programmer) or school,
|
||||||
|
if any, to sign a "copyright disclaimer" for the program, if necessary.
|
||||||
|
For more information on this, and how to apply and follow the GNU AGPL, see
|
||||||
|
<https://www.gnu.org/licenses/>.
|
||||||
17
README.md
Normal file
17
README.md
Normal file
@@ -0,0 +1,17 @@
|
|||||||
|
<div align="center">
|
||||||
|
|
||||||
|
# TeRaSu (TRS)
|
||||||
|
|
||||||
|
よの光遍く空へ照しつつ
|
||||||
|
|
||||||
|
土棲むものは孰れか見ゆや
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
</div>
|
||||||
|
|
||||||
|
## Usage
|
||||||
|
|
||||||
|
```go
|
||||||
|
tlsConn = terasu.Use(tlsConn)
|
||||||
|
```
|
||||||
55
cmd/main.go
Normal file
55
cmd/main.go
Normal file
@@ -0,0 +1,55 @@
|
|||||||
|
package main
|
||||||
|
|
||||||
|
import (
|
||||||
|
"crypto/tls"
|
||||||
|
"flag"
|
||||||
|
"fmt"
|
||||||
|
"io"
|
||||||
|
"net"
|
||||||
|
"net/http"
|
||||||
|
"strings"
|
||||||
|
|
||||||
|
"github.com/fumiama/terasu"
|
||||||
|
)
|
||||||
|
|
||||||
|
func main() {
|
||||||
|
u := flag.String("url", "https://huggingface.co/", "the url to get")
|
||||||
|
ipport := flag.String("dest", "18.65.159.2:443", "host:port")
|
||||||
|
flag.Parse()
|
||||||
|
if !strings.HasPrefix(*u, "https://") {
|
||||||
|
fmt.Println("ERROR: invalid url")
|
||||||
|
return
|
||||||
|
}
|
||||||
|
host := (*u)[8:]
|
||||||
|
host, _, _ = strings.Cut(host, "/")
|
||||||
|
cli := http.Client{
|
||||||
|
Transport: &http.Transport{
|
||||||
|
DialTLS: func(network, addr string) (net.Conn, error) {
|
||||||
|
conn, err := net.Dial("tcp", *ipport)
|
||||||
|
if err != nil {
|
||||||
|
return nil, err
|
||||||
|
}
|
||||||
|
return terasu.Use(tls.Client(conn, &tls.Config{
|
||||||
|
ServerName: host,
|
||||||
|
InsecureSkipVerify: true,
|
||||||
|
})), nil
|
||||||
|
},
|
||||||
|
},
|
||||||
|
}
|
||||||
|
resp, err := cli.Get(*u)
|
||||||
|
if err != nil {
|
||||||
|
fmt.Println("ERROR:", err)
|
||||||
|
return
|
||||||
|
}
|
||||||
|
defer resp.Body.Close()
|
||||||
|
if resp.StatusCode != http.StatusOK {
|
||||||
|
fmt.Println("ERROR:", "status code:", resp.StatusCode)
|
||||||
|
return
|
||||||
|
}
|
||||||
|
data, err := io.ReadAll(resp.Body)
|
||||||
|
if err != nil {
|
||||||
|
fmt.Println("ERROR:", err)
|
||||||
|
return
|
||||||
|
}
|
||||||
|
fmt.Print(string(data))
|
||||||
|
}
|
||||||
420
handshake.go
Normal file
420
handshake.go
Normal file
@@ -0,0 +1,420 @@
|
|||||||
|
package terasu
|
||||||
|
|
||||||
|
import (
|
||||||
|
"context"
|
||||||
|
"crypto"
|
||||||
|
"crypto/ecdh"
|
||||||
|
"crypto/tls"
|
||||||
|
"errors"
|
||||||
|
"hash"
|
||||||
|
"unsafe"
|
||||||
|
)
|
||||||
|
|
||||||
|
//go:linkname defaultConfig crypto/tls.defaultConfig
|
||||||
|
func defaultConfig() *tls.Config
|
||||||
|
|
||||||
|
type clientHelloMsg struct {
|
||||||
|
raw []byte
|
||||||
|
vers uint16
|
||||||
|
random []byte
|
||||||
|
sessionId []byte
|
||||||
|
cipherSuites []uint16
|
||||||
|
compressionMethods []uint8
|
||||||
|
serverName string
|
||||||
|
ocspStapling bool
|
||||||
|
supportedCurves []tls.CurveID
|
||||||
|
supportedPoints []uint8
|
||||||
|
ticketSupported bool
|
||||||
|
sessionTicket []uint8
|
||||||
|
supportedSignatureAlgorithms []tls.SignatureScheme
|
||||||
|
supportedSignatureAlgorithmsCert []tls.SignatureScheme
|
||||||
|
secureRenegotiationSupported bool
|
||||||
|
secureRenegotiation []byte
|
||||||
|
extendedMasterSecret bool
|
||||||
|
alpnProtocols []string
|
||||||
|
scts bool
|
||||||
|
supportedVersions []uint16
|
||||||
|
cookie []byte
|
||||||
|
keyShares []byte
|
||||||
|
earlyData bool
|
||||||
|
}
|
||||||
|
|
||||||
|
//go:linkname marshal crypto/tls.(*clientHelloMsg).marshal
|
||||||
|
func marshal(m *clientHelloMsg) ([]byte, error)
|
||||||
|
|
||||||
|
func (m *clientHelloMsg) marshal() ([]byte, error) {
|
||||||
|
return marshal(m)
|
||||||
|
}
|
||||||
|
|
||||||
|
//go:linkname unmarshal crypto/tls.(*clientHelloMsg).unmarshal
|
||||||
|
func unmarshal(m *clientHelloMsg, data []byte) bool
|
||||||
|
|
||||||
|
func (m *clientHelloMsg) unmarshal(data []byte) bool {
|
||||||
|
return unmarshal(m, data)
|
||||||
|
}
|
||||||
|
|
||||||
|
//go:linkname makeClientHello crypto/tls.(*Conn).makeClientHello
|
||||||
|
func makeClientHello(c *trsconn) (*clientHelloMsg, *ecdh.PrivateKey, error)
|
||||||
|
|
||||||
|
func (c *trsconn) makeClientHello() (*clientHelloMsg, *ecdh.PrivateKey, error) {
|
||||||
|
return makeClientHello(c)
|
||||||
|
}
|
||||||
|
|
||||||
|
// A sessionState is a resumable session.
|
||||||
|
type sessionState struct {
|
||||||
|
// Encoded as a SessionState (in the language of RFC 8446, Section 3).
|
||||||
|
//
|
||||||
|
// enum { server(1), client(2) } SessionStateType;
|
||||||
|
//
|
||||||
|
// opaque Certificate<1..2^24-1>;
|
||||||
|
//
|
||||||
|
// Certificate CertificateChain<0..2^24-1>;
|
||||||
|
//
|
||||||
|
// opaque Extra<0..2^24-1>;
|
||||||
|
//
|
||||||
|
// struct {
|
||||||
|
// uint16 version;
|
||||||
|
// SessionStateType type;
|
||||||
|
// uint16 cipher_suite;
|
||||||
|
// uint64 created_at;
|
||||||
|
// opaque secret<1..2^8-1>;
|
||||||
|
// Extra extra<0..2^24-1>;
|
||||||
|
// uint8 ext_master_secret = { 0, 1 };
|
||||||
|
// uint8 early_data = { 0, 1 };
|
||||||
|
// CertificateEntry certificate_list<0..2^24-1>;
|
||||||
|
// CertificateChain verified_chains<0..2^24-1>; /* excluding leaf */
|
||||||
|
// select (SessionState.early_data) {
|
||||||
|
// case 0: Empty;
|
||||||
|
// case 1: opaque alpn<1..2^8-1>;
|
||||||
|
// };
|
||||||
|
// select (SessionState.type) {
|
||||||
|
// case server: Empty;
|
||||||
|
// case client: struct {
|
||||||
|
// select (SessionState.version) {
|
||||||
|
// case VersionTLS10..VersionTLS12: Empty;
|
||||||
|
// case VersionTLS13: struct {
|
||||||
|
// uint64 use_by;
|
||||||
|
// uint32 age_add;
|
||||||
|
// };
|
||||||
|
// };
|
||||||
|
// };
|
||||||
|
// };
|
||||||
|
// } SessionState;
|
||||||
|
//
|
||||||
|
|
||||||
|
// Extra is ignored by crypto/tls, but is encoded by [SessionState.Bytes]
|
||||||
|
// and parsed by [ParseSessionState].
|
||||||
|
//
|
||||||
|
// This allows [Config.UnwrapSession]/[Config.WrapSession] and
|
||||||
|
// [ClientSessionCache] implementations to store and retrieve additional
|
||||||
|
// data alongside this session.
|
||||||
|
//
|
||||||
|
// To allow different layers in a protocol stack to share this field,
|
||||||
|
// applications must only append to it, not replace it, and must use entries
|
||||||
|
// that can be recognized even if out of order (for example, by starting
|
||||||
|
// with an id and version prefix).
|
||||||
|
Extra [][]byte
|
||||||
|
|
||||||
|
// EarlyData indicates whether the ticket can be used for 0-RTT in a QUIC
|
||||||
|
// connection. The application may set this to false if it is true to
|
||||||
|
// decline to offer 0-RTT even if supported.
|
||||||
|
EarlyData bool
|
||||||
|
|
||||||
|
version uint16
|
||||||
|
isClient bool
|
||||||
|
cipherSuite uint16
|
||||||
|
}
|
||||||
|
|
||||||
|
//go:linkname loadSession crypto/tls.(*Conn).loadSession
|
||||||
|
func loadSession(c *trsconn, hello *clientHelloMsg) (
|
||||||
|
session *sessionState, earlySecret, binderKey []byte, err error,
|
||||||
|
)
|
||||||
|
|
||||||
|
func (c *trsconn) loadSession(hello *clientHelloMsg) (
|
||||||
|
session *sessionState, earlySecret, binderKey []byte, err error,
|
||||||
|
) {
|
||||||
|
return loadSession(c, hello)
|
||||||
|
}
|
||||||
|
|
||||||
|
//go:linkname clientSessionCacheKey crypto/tls.(*Conn).clientSessionCacheKey
|
||||||
|
func clientSessionCacheKey(c *trsconn) string
|
||||||
|
|
||||||
|
func (c *trsconn) clientSessionCacheKey() string {
|
||||||
|
return clientSessionCacheKey(c)
|
||||||
|
}
|
||||||
|
|
||||||
|
// A cipherSuiteTLS13 defines only the pair of the AEAD algorithm and hash
|
||||||
|
// algorithm to be used with HKDF. See RFC 8446, Appendix B.4.
|
||||||
|
type cipherSuiteTLS13 struct {
|
||||||
|
id uint16
|
||||||
|
keyLen int
|
||||||
|
aead func(key, fixedNonce []byte) any
|
||||||
|
hash crypto.Hash
|
||||||
|
}
|
||||||
|
|
||||||
|
//go:linkname deriveSecret crypto/tls.(*cipherSuiteTLS13).deriveSecret
|
||||||
|
func deriveSecret(c *cipherSuiteTLS13, secret []byte, label string, transcript hash.Hash) []byte
|
||||||
|
|
||||||
|
func (c *cipherSuiteTLS13) deriveSecret(secret []byte, label string, transcript hash.Hash) []byte {
|
||||||
|
return deriveSecret(c, secret, label, transcript)
|
||||||
|
}
|
||||||
|
|
||||||
|
//go:linkname cipherSuiteTLS13ByID crypto/tls.cipherSuiteTLS13ByID
|
||||||
|
func cipherSuiteTLS13ByID(id uint16) *cipherSuiteTLS13
|
||||||
|
|
||||||
|
type handshakeMessage interface {
|
||||||
|
marshal() ([]byte, error)
|
||||||
|
unmarshal([]byte) bool
|
||||||
|
}
|
||||||
|
|
||||||
|
type transcriptHash interface {
|
||||||
|
Write([]byte) (int, error)
|
||||||
|
}
|
||||||
|
|
||||||
|
//go:linkname transcriptMsg crypto/tls.transcriptMsg
|
||||||
|
func transcriptMsg(msg handshakeMessage, h transcriptHash) error
|
||||||
|
|
||||||
|
const clientEarlyTrafficLabel = "c e traffic"
|
||||||
|
|
||||||
|
//go:linkname quicSetWriteSecret crypto/tls.(*Conn).quicSetWriteSecret
|
||||||
|
func quicSetWriteSecret(c *trsconn, level tls.QUICEncryptionLevel, suite uint16, secret []byte)
|
||||||
|
|
||||||
|
//go:linkname readHandshake crypto/tls.(*Conn).readHandshake
|
||||||
|
func readHandshake(c *trsconn, transcript transcriptHash) (any, error)
|
||||||
|
|
||||||
|
func (c *trsconn) readHandshake(transcript transcriptHash) (any, error) {
|
||||||
|
return readHandshake(c, transcript)
|
||||||
|
}
|
||||||
|
|
||||||
|
type serverHelloMsg struct {
|
||||||
|
raw []byte
|
||||||
|
vers uint16
|
||||||
|
random []byte
|
||||||
|
}
|
||||||
|
|
||||||
|
//go:linkname sendAlert crypto/tls.(*Conn).sendAlert
|
||||||
|
func sendAlert(c *trsconn, err alert) error
|
||||||
|
|
||||||
|
func (c *trsconn) sendAlert(err alert) error {
|
||||||
|
return sendAlert(c, err)
|
||||||
|
}
|
||||||
|
|
||||||
|
//go:linkname unexpectedMessageError crypto/tls.unexpectedMessageError
|
||||||
|
func unexpectedMessageError(wanted, got any) error
|
||||||
|
|
||||||
|
const (
|
||||||
|
alertUnexpectedMessage alert = 10
|
||||||
|
alertIllegalParameter alert = 47
|
||||||
|
)
|
||||||
|
|
||||||
|
//go:linkname pickTLSVersion crypto/tls.(*Conn).pickTLSVersion
|
||||||
|
func pickTLSVersion(c *trsconn, serverHello *serverHelloMsg) error
|
||||||
|
|
||||||
|
func (c *trsconn) pickTLSVersion(serverHello *serverHelloMsg) error {
|
||||||
|
return pickTLSVersion(c, serverHello)
|
||||||
|
}
|
||||||
|
|
||||||
|
//go:linkname maxSupportedVersion crypto/tls.(*Config).maxSupportedVersion
|
||||||
|
func maxSupportedVersion(c *tls.Config, isClient bool) uint16
|
||||||
|
|
||||||
|
const roleClient = true
|
||||||
|
|
||||||
|
const (
|
||||||
|
// downgradeCanaryTLS12 or downgradeCanaryTLS11 is embedded in the server
|
||||||
|
// random as a downgrade protection if the server would be capable of
|
||||||
|
// negotiating a higher version. See RFC 8446, Section 4.1.3.
|
||||||
|
downgradeCanaryTLS12 = "DOWNGRD\x01"
|
||||||
|
downgradeCanaryTLS11 = "DOWNGRD\x00"
|
||||||
|
)
|
||||||
|
|
||||||
|
type clientHandshakeStateTLS13 struct {
|
||||||
|
c *trsconn
|
||||||
|
ctx context.Context
|
||||||
|
serverHello *serverHelloMsg
|
||||||
|
hello *clientHelloMsg
|
||||||
|
ecdheKey *ecdh.PrivateKey
|
||||||
|
|
||||||
|
session *sessionState
|
||||||
|
earlySecret []byte
|
||||||
|
binderKey []byte
|
||||||
|
|
||||||
|
certReq *uintptr
|
||||||
|
usingPSK bool
|
||||||
|
sentDummyCCS bool
|
||||||
|
suite *cipherSuiteTLS13
|
||||||
|
transcript hash.Hash
|
||||||
|
masterSecret []byte
|
||||||
|
trafficSecret []byte // client_application_traffic_secret_0
|
||||||
|
}
|
||||||
|
|
||||||
|
//go:linkname handshake13 crypto/tls.(*clientHandshakeStateTLS13).handshake
|
||||||
|
func handshake13(hs *clientHandshakeStateTLS13) error
|
||||||
|
|
||||||
|
func (hs *clientHandshakeStateTLS13) handshake() error {
|
||||||
|
return handshake13(hs)
|
||||||
|
}
|
||||||
|
|
||||||
|
// A finishedHash calculates the hash of a set of handshake messages suitable
|
||||||
|
// for including in a Finished message.
|
||||||
|
type finishedHash struct {
|
||||||
|
client hash.Hash
|
||||||
|
server hash.Hash
|
||||||
|
|
||||||
|
// Prior to TLS 1.2, an additional MD5 hash is required.
|
||||||
|
clientMD5 hash.Hash
|
||||||
|
serverMD5 hash.Hash
|
||||||
|
|
||||||
|
// In TLS 1.2, a full buffer is sadly required.
|
||||||
|
buffer []byte
|
||||||
|
|
||||||
|
version uint16
|
||||||
|
prf func(result, secret, label, seed []byte)
|
||||||
|
}
|
||||||
|
|
||||||
|
type clientHandshakeState struct {
|
||||||
|
c *trsconn
|
||||||
|
ctx context.Context
|
||||||
|
serverHello *serverHelloMsg
|
||||||
|
hello *clientHelloMsg
|
||||||
|
suite *uintptr
|
||||||
|
finishedHash finishedHash
|
||||||
|
masterSecret []byte
|
||||||
|
session *sessionState // the session being resumed
|
||||||
|
ticket []byte // a fresh ticket received during this handshake
|
||||||
|
}
|
||||||
|
|
||||||
|
//go:linkname handshake crypto/tls.(*clientHandshakeState).handshake
|
||||||
|
func handshake(hs *clientHandshakeState) error
|
||||||
|
|
||||||
|
func (hs *clientHandshakeState) handshake() error {
|
||||||
|
return handshake(hs)
|
||||||
|
}
|
||||||
|
|
||||||
|
// writeHandshakeRecord writes a handshake message to the connection and updates
|
||||||
|
// the record layer state. If transcript is non-nil the marshalled message is
|
||||||
|
// written to it.
|
||||||
|
func (c *trsconn) writeHandshakeRecord(msg handshakeMessage, transcript transcriptHash) (int, error) {
|
||||||
|
c.out.Lock()
|
||||||
|
defer c.out.Unlock()
|
||||||
|
|
||||||
|
data, err := msg.marshal()
|
||||||
|
if err != nil {
|
||||||
|
return 0, err
|
||||||
|
}
|
||||||
|
if transcript != nil {
|
||||||
|
transcript.Write(data)
|
||||||
|
}
|
||||||
|
|
||||||
|
return writeRecordLocked(c, recordTypeHandshake, data)
|
||||||
|
}
|
||||||
|
|
||||||
|
func (c *trsconn) clientHandshake(ctx context.Context) (err error) {
|
||||||
|
if c.config == nil {
|
||||||
|
c.config = defaultConfig()
|
||||||
|
}
|
||||||
|
|
||||||
|
// This may be a renegotiation handshake, in which case some fields
|
||||||
|
// need to be reset.
|
||||||
|
c.didResume = false
|
||||||
|
|
||||||
|
hello, ecdheKey, err := c.makeClientHello()
|
||||||
|
if err != nil {
|
||||||
|
return err
|
||||||
|
}
|
||||||
|
c.serverName = hello.serverName
|
||||||
|
|
||||||
|
session, earlySecret, binderKey, err := c.loadSession(hello)
|
||||||
|
if err != nil {
|
||||||
|
return err
|
||||||
|
}
|
||||||
|
if session != nil {
|
||||||
|
defer func() {
|
||||||
|
// If we got a handshake failure when resuming a session, throw away
|
||||||
|
// the session ticket. See RFC 5077, Section 3.2.
|
||||||
|
//
|
||||||
|
// RFC 8446 makes no mention of dropping tickets on failure, but it
|
||||||
|
// does require servers to abort on invalid binders, so we need to
|
||||||
|
// delete tickets to recover from a corrupted PSK.
|
||||||
|
if err != nil {
|
||||||
|
if cacheKey := c.clientSessionCacheKey(); cacheKey != "" {
|
||||||
|
c.config.ClientSessionCache.Put(cacheKey, nil)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}()
|
||||||
|
}
|
||||||
|
|
||||||
|
if _, err := c.writeHandshakeRecord(hello, nil); err != nil {
|
||||||
|
return err
|
||||||
|
}
|
||||||
|
|
||||||
|
if hello.earlyData {
|
||||||
|
suite := cipherSuiteTLS13ByID(session.cipherSuite)
|
||||||
|
transcript := suite.hash.New()
|
||||||
|
if err := transcriptMsg(hello, transcript); err != nil {
|
||||||
|
return err
|
||||||
|
}
|
||||||
|
earlyTrafficSecret := suite.deriveSecret(earlySecret, clientEarlyTrafficLabel, transcript)
|
||||||
|
quicSetWriteSecret(c, tls.QUICEncryptionLevelEarly, suite.id, earlyTrafficSecret)
|
||||||
|
}
|
||||||
|
|
||||||
|
// serverHelloMsg is not included in the transcript
|
||||||
|
msg, err := c.readHandshake(nil)
|
||||||
|
if err != nil {
|
||||||
|
return err
|
||||||
|
}
|
||||||
|
|
||||||
|
var serverHello *serverHelloMsg
|
||||||
|
if !isTypeEqual(msg, "*tls.serverHelloMsg") {
|
||||||
|
c.sendAlert(alertUnexpectedMessage)
|
||||||
|
return unexpectedMessageError(serverHello, msg)
|
||||||
|
}
|
||||||
|
serverHello = (*serverHelloMsg)(*(*unsafe.Pointer)(
|
||||||
|
unsafe.Add(unsafe.Pointer(&msg), unsafe.Sizeof(uintptr(0))),
|
||||||
|
))
|
||||||
|
|
||||||
|
if err := c.pickTLSVersion(serverHello); err != nil {
|
||||||
|
return err
|
||||||
|
}
|
||||||
|
|
||||||
|
// If we are negotiating a protocol version that's lower than what we
|
||||||
|
// support, check for the server downgrade canaries.
|
||||||
|
// See RFC 8446, Section 4.1.3.
|
||||||
|
maxVers := maxSupportedVersion(c.config, roleClient)
|
||||||
|
tls12Downgrade := string(serverHello.random[24:]) == downgradeCanaryTLS12
|
||||||
|
tls11Downgrade := string(serverHello.random[24:]) == downgradeCanaryTLS11
|
||||||
|
if maxVers == tls.VersionTLS13 && c.vers <= tls.VersionTLS12 && (tls12Downgrade || tls11Downgrade) ||
|
||||||
|
maxVers == tls.VersionTLS12 && c.vers <= tls.VersionTLS11 && tls11Downgrade {
|
||||||
|
c.sendAlert(alertIllegalParameter)
|
||||||
|
return errors.New("tls: downgrade attempt detected, possibly due to a MitM attack or a broken middlebox")
|
||||||
|
}
|
||||||
|
|
||||||
|
if c.vers == tls.VersionTLS13 {
|
||||||
|
hs := &clientHandshakeStateTLS13{
|
||||||
|
c: c,
|
||||||
|
ctx: ctx,
|
||||||
|
serverHello: serverHello,
|
||||||
|
hello: hello,
|
||||||
|
ecdheKey: ecdheKey,
|
||||||
|
session: session,
|
||||||
|
earlySecret: earlySecret,
|
||||||
|
binderKey: binderKey,
|
||||||
|
}
|
||||||
|
|
||||||
|
// In TLS 1.3, session tickets are delivered after the handshake.
|
||||||
|
return hs.handshake()
|
||||||
|
}
|
||||||
|
|
||||||
|
hs := &clientHandshakeState{
|
||||||
|
c: c,
|
||||||
|
ctx: ctx,
|
||||||
|
serverHello: serverHello,
|
||||||
|
hello: hello,
|
||||||
|
session: session,
|
||||||
|
}
|
||||||
|
|
||||||
|
if err := hs.handshake(); err != nil {
|
||||||
|
return err
|
||||||
|
}
|
||||||
|
|
||||||
|
return nil
|
||||||
|
}
|
||||||
13
terasu.go
Normal file
13
terasu.go
Normal file
@@ -0,0 +1,13 @@
|
|||||||
|
package terasu
|
||||||
|
|
||||||
|
import (
|
||||||
|
"crypto/tls"
|
||||||
|
"unsafe"
|
||||||
|
)
|
||||||
|
|
||||||
|
// Use terasu in this TLS conn
|
||||||
|
func Use(conn *tls.Conn) *tls.Conn {
|
||||||
|
trsConn := (*trsconn)(unsafe.Pointer(conn))
|
||||||
|
trsConn.handshakeFn = trsConn.clientHandshake
|
||||||
|
return conn
|
||||||
|
}
|
||||||
40
terasu_test.go
Normal file
40
terasu_test.go
Normal file
@@ -0,0 +1,40 @@
|
|||||||
|
package terasu
|
||||||
|
|
||||||
|
import (
|
||||||
|
"crypto/tls"
|
||||||
|
"io"
|
||||||
|
"net"
|
||||||
|
"net/http"
|
||||||
|
"testing"
|
||||||
|
)
|
||||||
|
|
||||||
|
func TestHTTPDialTLS(t *testing.T) {
|
||||||
|
cli := http.Client{
|
||||||
|
Transport: &http.Transport{
|
||||||
|
DialTLS: func(network, addr string) (net.Conn, error) {
|
||||||
|
conn, err := net.Dial("tcp", "18.65.159.2:443")
|
||||||
|
if err != nil {
|
||||||
|
return nil, err
|
||||||
|
}
|
||||||
|
t.Log("net.Dial succeeded")
|
||||||
|
return Use(tls.Client(conn, &tls.Config{
|
||||||
|
ServerName: "huggingface.co",
|
||||||
|
InsecureSkipVerify: true,
|
||||||
|
})), nil
|
||||||
|
},
|
||||||
|
},
|
||||||
|
}
|
||||||
|
resp, err := cli.Get("https://huggingface.co/")
|
||||||
|
if err != nil {
|
||||||
|
t.Fatal(err)
|
||||||
|
}
|
||||||
|
defer resp.Body.Close()
|
||||||
|
if resp.StatusCode != http.StatusOK {
|
||||||
|
t.Fatal("status code:", resp.StatusCode)
|
||||||
|
}
|
||||||
|
data, err := io.ReadAll(resp.Body)
|
||||||
|
if err != nil {
|
||||||
|
t.Fatal(err)
|
||||||
|
}
|
||||||
|
t.Log(string(data))
|
||||||
|
}
|
||||||
269
tls.go
Normal file
269
tls.go
Normal file
@@ -0,0 +1,269 @@
|
|||||||
|
package terasu
|
||||||
|
|
||||||
|
import (
|
||||||
|
"context"
|
||||||
|
"crypto/tls"
|
||||||
|
"crypto/x509"
|
||||||
|
"hash"
|
||||||
|
"io"
|
||||||
|
"net"
|
||||||
|
"sync"
|
||||||
|
"sync/atomic"
|
||||||
|
"unsafe"
|
||||||
|
_ "unsafe"
|
||||||
|
)
|
||||||
|
|
||||||
|
const firstFragmentLen = 4
|
||||||
|
|
||||||
|
type recordType uint8
|
||||||
|
|
||||||
|
const (
|
||||||
|
recordTypeChangeCipherSpec recordType = 20
|
||||||
|
recordTypeAlert recordType = 21
|
||||||
|
recordTypeHandshake recordType = 22
|
||||||
|
recordTypeApplicationData recordType = 23
|
||||||
|
)
|
||||||
|
|
||||||
|
const (
|
||||||
|
recordHeaderLen = 5 // record header length
|
||||||
|
)
|
||||||
|
|
||||||
|
type alert uint8
|
||||||
|
|
||||||
|
//go:linkname alertError tls.(tls.alert).Error
|
||||||
|
func alertError(e alert) string
|
||||||
|
|
||||||
|
func (e alert) Error() string {
|
||||||
|
return alertError(e)
|
||||||
|
}
|
||||||
|
|
||||||
|
// A halfConn represents one direction of the record layer
|
||||||
|
// connection, either sending or receiving.
|
||||||
|
type halfConn struct {
|
||||||
|
sync.Mutex
|
||||||
|
|
||||||
|
err error // first permanent error
|
||||||
|
version uint16 // protocol version
|
||||||
|
cipher any // cipher algorithm
|
||||||
|
mac hash.Hash
|
||||||
|
seq [8]byte // 64-bit sequence number
|
||||||
|
|
||||||
|
scratchBuf [13]byte // to avoid allocs; interface method args escape
|
||||||
|
|
||||||
|
nextCipher any // next encryption state
|
||||||
|
nextMac hash.Hash // next MAC algorithm
|
||||||
|
|
||||||
|
level tls.QUICEncryptionLevel // current QUIC encryption level
|
||||||
|
trafficSecret []byte // current TLS 1.3 traffic secret
|
||||||
|
}
|
||||||
|
|
||||||
|
// A trsconn represents a secured connection.
|
||||||
|
// It implements the net.trsconn interface.
|
||||||
|
type trsconn struct {
|
||||||
|
// constant
|
||||||
|
conn net.Conn
|
||||||
|
isClient bool
|
||||||
|
handshakeFn func(context.Context) error // (*Conn).clientHandshake or serverHandshake
|
||||||
|
quic *uintptr // nil for non-QUIC connections
|
||||||
|
|
||||||
|
// isHandshakeComplete is true if the connection is currently transferring
|
||||||
|
// application data (i.e. is not currently processing a handshake).
|
||||||
|
// isHandshakeComplete is true implies handshakeErr == nil.
|
||||||
|
isHandshakeComplete atomic.Bool
|
||||||
|
// constant after handshake; protected by handshakeMutex
|
||||||
|
handshakeMutex sync.Mutex
|
||||||
|
handshakeErr error // error resulting from handshake
|
||||||
|
vers uint16 // TLS version
|
||||||
|
haveVers bool // version has been negotiated
|
||||||
|
config *tls.Config // configuration passed to constructor
|
||||||
|
// handshakes counts the number of handshakes performed on the
|
||||||
|
// connection so far. If renegotiation is disabled then this is either
|
||||||
|
// zero or one.
|
||||||
|
handshakes int
|
||||||
|
extMasterSecret bool
|
||||||
|
didResume bool // whether this connection was a session resumption
|
||||||
|
cipherSuite uint16
|
||||||
|
ocspResponse []byte // stapled OCSP response
|
||||||
|
scts [][]byte // signed certificate timestamps from server
|
||||||
|
peerCertificates []*x509.Certificate
|
||||||
|
// activeCertHandles contains the cache handles to certificates in
|
||||||
|
// peerCertificates that are used to track active references.
|
||||||
|
activeCertHandles []*uintptr
|
||||||
|
// verifiedChains contains the certificate chains that we built, as
|
||||||
|
// opposed to the ones presented by the server.
|
||||||
|
verifiedChains [][]*x509.Certificate
|
||||||
|
// serverName contains the server name indicated by the client, if any.
|
||||||
|
serverName string
|
||||||
|
// secureRenegotiation is true if the server echoed the secure
|
||||||
|
// renegotiation extension. (This is meaningless as a server because
|
||||||
|
// renegotiation is not supported in that case.)
|
||||||
|
secureRenegotiation bool
|
||||||
|
// ekm is a closure for exporting keying material.
|
||||||
|
ekm func(label string, context []byte, length int) ([]byte, error)
|
||||||
|
// resumptionSecret is the resumption_master_secret for handling
|
||||||
|
// or sending NewSessionTicket messages.
|
||||||
|
resumptionSecret []byte
|
||||||
|
|
||||||
|
// ticketKeys is the set of active session ticket keys for this
|
||||||
|
// connection. The first one is used to encrypt new tickets and
|
||||||
|
// all are tried to decrypt tickets.
|
||||||
|
ticketKeys []byte
|
||||||
|
|
||||||
|
// clientFinishedIsFirst is true if the client sent the first Finished
|
||||||
|
// message during the most recent handshake. This is recorded because
|
||||||
|
// the first transmitted Finished message is the tls-unique
|
||||||
|
// channel-binding value.
|
||||||
|
clientFinishedIsFirst bool
|
||||||
|
|
||||||
|
// closeNotifyErr is any error from sending the alertCloseNotify record.
|
||||||
|
closeNotifyErr error
|
||||||
|
// closeNotifySent is true if the Conn attempted to send an
|
||||||
|
// alertCloseNotify record.
|
||||||
|
closeNotifySent bool
|
||||||
|
|
||||||
|
// clientFinished and serverFinished contain the Finished message sent
|
||||||
|
// by the client or server in the most recent handshake. This is
|
||||||
|
// retained to support the renegotiation extension and tls-unique
|
||||||
|
// channel-binding.
|
||||||
|
clientFinished [12]byte
|
||||||
|
serverFinished [12]byte
|
||||||
|
|
||||||
|
// clientProtocol is the negotiated ALPN protocol.
|
||||||
|
clientProtocol string
|
||||||
|
|
||||||
|
// input/output
|
||||||
|
in, out halfConn
|
||||||
|
}
|
||||||
|
|
||||||
|
//go:linkname outBufPool crypto/tls.outBufPool
|
||||||
|
var outBufPool sync.Pool
|
||||||
|
|
||||||
|
//go:linkname tlsWriteRecordLocked crypto/tls.(*Conn).writeRecordLocked
|
||||||
|
func tlsWriteRecordLocked(c *trsconn, typ recordType, data []byte) (int, error)
|
||||||
|
|
||||||
|
//go:linkname maxPayloadSizeForWrite crypto/tls.(*Conn).maxPayloadSizeForWrite
|
||||||
|
func maxPayloadSizeForWrite(c *trsconn, typ recordType) int
|
||||||
|
|
||||||
|
func (c *trsconn) maxPayloadSizeForWrite(typ recordType) int {
|
||||||
|
return maxPayloadSizeForWrite(c, typ)
|
||||||
|
}
|
||||||
|
|
||||||
|
//go:linkname sliceForAppend crypto/tls.sliceForAppend
|
||||||
|
func sliceForAppend(in []byte, n int) (head, tail []byte)
|
||||||
|
|
||||||
|
//go:linkname encrypt crypto/tls.(*halfConn).encrypt
|
||||||
|
func encrypt(hc *halfConn, record, payload []byte, rand io.Reader) ([]byte, error)
|
||||||
|
|
||||||
|
func (hc *halfConn) encrypt(record, payload []byte, rand io.Reader) ([]byte, error) {
|
||||||
|
return encrypt(hc, record, payload, rand)
|
||||||
|
}
|
||||||
|
|
||||||
|
//go:linkname rand crypto/tls.(*Config).rand
|
||||||
|
func rand(c *tls.Config) io.Reader
|
||||||
|
|
||||||
|
//go:linkname write crypto/tls.(*Conn).write
|
||||||
|
func write(c *trsconn, data []byte) (int, error)
|
||||||
|
|
||||||
|
func (c *trsconn) write(data []byte) (int, error) {
|
||||||
|
return write(c, data)
|
||||||
|
}
|
||||||
|
|
||||||
|
//go:linkname flush crypto/tls.(*Conn).flush
|
||||||
|
func flush(c *trsconn) (int, error)
|
||||||
|
|
||||||
|
func (c *trsconn) flush() (int, error) {
|
||||||
|
return flush(c)
|
||||||
|
}
|
||||||
|
|
||||||
|
//go:linkname changeCipherSpec crypto/tls.(*halfConn).changeCipherSpec
|
||||||
|
func changeCipherSpec(hc *halfConn) error
|
||||||
|
|
||||||
|
func (hc *halfConn) changeCipherSpec() error {
|
||||||
|
return changeCipherSpec(hc)
|
||||||
|
}
|
||||||
|
|
||||||
|
//go:linkname sendAlertLocked crypto/tls.(*Conn).sendAlertLocked
|
||||||
|
func sendAlertLocked(c *trsconn, err alert) error
|
||||||
|
|
||||||
|
func (c *trsconn) sendAlertLocked(err alert) error {
|
||||||
|
return sendAlertLocked(c, err)
|
||||||
|
}
|
||||||
|
|
||||||
|
// writeRecordLocked writes a TLS record with the given type and payload to the
|
||||||
|
// connection and updates the record layer state.
|
||||||
|
func writeRecordLocked(c *trsconn, typ recordType, data []byte) (int, error) {
|
||||||
|
if c.quic != nil {
|
||||||
|
return tlsWriteRecordLocked(c, typ, data)
|
||||||
|
}
|
||||||
|
|
||||||
|
outBufPtr := outBufPool.Get().(*[]byte)
|
||||||
|
outBuf := *outBufPtr
|
||||||
|
defer func() {
|
||||||
|
// You might be tempted to simplify this by just passing &outBuf to Put,
|
||||||
|
// but that would make the local copy of the outBuf slice header escape
|
||||||
|
// to the heap, causing an allocation. Instead, we keep around the
|
||||||
|
// pointer to the slice header returned by Get, which is already on the
|
||||||
|
// heap, and overwrite and return that.
|
||||||
|
*outBufPtr = outBuf
|
||||||
|
outBufPool.Put(outBufPtr)
|
||||||
|
}()
|
||||||
|
|
||||||
|
var n int
|
||||||
|
isFirstLoop := true
|
||||||
|
for len(data) > 0 {
|
||||||
|
m := len(data)
|
||||||
|
if !isFirstLoop {
|
||||||
|
if maxPayload := c.maxPayloadSizeForWrite(typ); m > maxPayload {
|
||||||
|
m = maxPayload
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
m = firstFragmentLen
|
||||||
|
}
|
||||||
|
|
||||||
|
_, outBuf = sliceForAppend(outBuf[:0], recordHeaderLen)
|
||||||
|
outBuf[0] = byte(typ)
|
||||||
|
vers := c.vers
|
||||||
|
if vers == 0 {
|
||||||
|
// Some TLS servers fail if the record version is
|
||||||
|
// greater than TLS 1.0 for the initial ClientHello.
|
||||||
|
vers = tls.VersionTLS10
|
||||||
|
} else if vers == tls.VersionTLS13 {
|
||||||
|
// TLS 1.3 froze the record layer version to 1.2.
|
||||||
|
// See RFC 8446, Section 5.1.
|
||||||
|
vers = tls.VersionTLS12
|
||||||
|
}
|
||||||
|
outBuf[1] = byte(vers >> 8)
|
||||||
|
outBuf[2] = byte(vers)
|
||||||
|
outBuf[3] = byte(m >> 8)
|
||||||
|
outBuf[4] = byte(m)
|
||||||
|
|
||||||
|
var err error
|
||||||
|
outBuf, err = c.out.encrypt(outBuf, data[:m], rand(c.config))
|
||||||
|
if err != nil {
|
||||||
|
return n, err
|
||||||
|
}
|
||||||
|
if _, err := c.write(outBuf); err != nil {
|
||||||
|
return n, err
|
||||||
|
}
|
||||||
|
n += m
|
||||||
|
data = data[m:]
|
||||||
|
if isFirstLoop {
|
||||||
|
isFirstLoop = false
|
||||||
|
if _, err := c.flush(); err != nil {
|
||||||
|
return n, err
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if typ == recordTypeChangeCipherSpec && c.vers != tls.VersionTLS13 {
|
||||||
|
if err := c.out.changeCipherSpec(); err != nil {
|
||||||
|
return n, c.sendAlertLocked(alert(
|
||||||
|
*(*uintptr)(
|
||||||
|
unsafe.Add(unsafe.Pointer(&err), unsafe.Sizeof(uintptr(0))),
|
||||||
|
),
|
||||||
|
))
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
return n, nil
|
||||||
|
}
|
||||||
Reference in New Issue
Block a user