TRKJ/gitea
2
0
Fork 0
mirror of https://gitee.com/gitea/gitea synced 2025-11-04 08:30:25 +08:00
Code Issues Packages Projects Releases Wiki Activity

Added all required dependencies

Browse Source
This commit is contained in:
Thomas Boerger
2016-11-03 23:16:01 +01:00
parent 78f86abba4
commit 1ebb35b988
660 changed files with 502447 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

191
vendor/github.com/go-macaron/captcha/LICENSE generated vendored Normal file
View File

@@ -0,0 +1,191 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction, and
distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by the copyright
owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all other entities
that control, are controlled by, or are under common control with that entity.
For the purposes of this definition, "control" means (i) the power, direct or
indirect, to cause the direction or management of such entity, whether by
contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity exercising
permissions granted by this License.
"Source" form shall mean the preferred form for making modifications, including
but not limited to software source code, documentation source, and configuration
files.
"Object" form shall mean any form resulting from mechanical transformation or
translation of a Source form, including but not limited to compiled object code,
generated documentation, and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or Object form, made
available under the License, as indicated by a copyright notice that is included
in or attached to the work (an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object form, that
is based on (or derived from) the Work and for which the editorial revisions,
annotations, elaborations, or other modifications represent, as a whole, an
original work of authorship. For the purposes of this License, Derivative Works
shall not include works that remain separable from, or merely link (or bind by
name) to the interfaces of, the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including the original version
of the Work and any modifications or additions to that Work or Derivative Works
thereof, that is intentionally submitted to Licensor for inclusion in the Work
by the copyright owner or by an individual or Legal Entity authorized to submit
on behalf of the copyright owner. For the purposes of this definition,
"submitted" means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems, and
issue tracking systems that are managed by, or on behalf of, the Licensor for
the purpose of discussing and improving the Work, but excluding communication
that is conspicuously marked or otherwise designated in writing by the copyright
owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity on behalf
of whom a Contribution has been received by Licensor and subsequently
incorporated within the Work.
2. Grant of Copyright License.
Subject to the terms and conditions of this License, each Contributor hereby
grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free,
irrevocable copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the Work and such
Derivative Works in Source or Object form.
3. Grant of Patent License.
Subject to the terms and conditions of this License, each Contributor hereby
grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free,
irrevocable (except as stated in this section) patent license to make, have
made, use, offer to sell, sell, import, and otherwise transfer the Work, where
such license applies only to those patent claims licensable by such Contributor
that are necessarily infringed by their Contribution(s) alone or by combination
of their Contribution(s) with the Work to which such Contribution(s) was
submitted. If You institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work or a
Contribution incorporated within the Work constitutes direct or contributory
patent infringement, then any patent licenses granted to You under this License
for that Work shall terminate as of the date such litigation is filed.
4. Redistribution.
You may reproduce and distribute copies of the Work or Derivative Works thereof
in any medium, with or without modifications, and in Source or Object form,
provided that You meet the following conditions:
You must give any other recipients of the Work or Derivative Works a copy of
this License; and
You must cause any modified files to carry prominent notices stating that You
changed the files; and
You must retain, in the Source form of any Derivative Works that You distribute,
all copyright, patent, trademark, and attribution notices from the Source form
of the Work, excluding those notices that do not pertain to any part of the
Derivative Works; and
If the Work includes a "NOTICE" text file as part of its distribution, then any
Derivative Works that You distribute must include a readable copy of the
attribution notices contained within such NOTICE file, excluding those notices
that do not pertain to any part of the Derivative Works, in at least one of the
following places: within a NOTICE text file distributed as part of the
Derivative Works; within the Source form or documentation, if provided along
with the Derivative Works; or, within a display generated by the Derivative
Works, if and wherever such third-party notices normally appear. The contents of
the NOTICE file are for informational purposes only and do not modify the
License. You may add Your own attribution notices within Derivative Works that
You distribute, alongside or as an addendum to the NOTICE text from the Work,
provided that such additional attribution notices cannot be construed as
modifying the License.
You may add Your own copyright statement to Your modifications and may provide
additional or different license terms and conditions for use, reproduction, or
distribution of Your modifications, or for any such Derivative Works as a whole,
provided Your use, reproduction, and distribution of the Work otherwise complies
with the conditions stated in this License.
5. Submission of Contributions.
Unless You explicitly state otherwise, any Contribution intentionally submitted
for inclusion in the Work by You to the Licensor shall be under the terms and
conditions of this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify the terms of
any separate license agreement you may have executed with Licensor regarding
such Contributions.
6. Trademarks.
This License does not grant permission to use the trade names, trademarks,
service marks, or product names of the Licensor, except as required for
reasonable and customary use in describing the origin of the Work and
reproducing the content of the NOTICE file.
7. Disclaimer of Warranty.
Unless required by applicable law or agreed to in writing, Licensor provides the
Work (and each Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied,
including, without limitation, any warranties or conditions of TITLE,
NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. You are
solely responsible for determining the appropriateness of using or
redistributing the Work and assume any risks associated with Your exercise of
permissions under this License.
8. Limitation of Liability.
In no event and under no legal theory, whether in tort (including negligence),
contract, or otherwise, unless required by applicable law (such as deliberate
and grossly negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special, incidental,
or consequential damages of any character arising as a result of this License or
out of the use or inability to use the Work (including but not limited to
damages for loss of goodwill, work stoppage, computer failure or malfunction, or
any and all other commercial damages or losses), even if such Contributor has
been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability.
While redistributing the Work or Derivative Works thereof, You may choose to
offer, and charge a fee for, acceptance of support, warranty, indemnity, or
other liability obligations and/or rights consistent with this License. However,
in accepting such obligations, You may act only on Your own behalf and on Your
sole responsibility, not on behalf of any other Contributor, and only if You
agree to indemnify, defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason of your
accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work
To apply the Apache License to your work, attach the following boilerplate
notice, with the fields enclosed by brackets "[]" replaced with your own
identifying information. (Don't include the brackets!) The text should be
enclosed in the appropriate comment syntax for the file format. We also
recommend that a file or class name and description of purpose be included on
the same "printed page" as the copyright notice for easier identification within
third-party archives.
Copyright [yyyy] [name of copyright owner]
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

16
vendor/github.com/go-macaron/captcha/README.md generated vendored Normal file
View File

@@ -0,0 +1,16 @@
# captcha [![Build Status](https://travis-ci.org/go-macaron/captcha.svg?branch=master)](https://travis-ci.org/go-macaron/captcha)
Middleware captcha provides captcha service for [Macaron](https://github.com/go-macaron/macaron).
### Installation
go get github.com/go-macaron/captcha
## Getting Help
- [API Reference](https://gowalker.org/github.com/go-macaron/captcha)
- [Documentation](http://go-macaron.com/docs/middlewares/captcha)
## License
This project is under the Apache License, Version 2.0. See the [LICENSE](LICENSE) file for the full license text.

241
vendor/github.com/go-macaron/captcha/captcha.go generated vendored Normal file
View File

@@ -0,0 +1,241 @@
// Copyright 2013 Beego Authors
// Copyright 2014 The Macaron Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
// Package captcha a middleware that provides captcha service for Macaron.
package captcha
import (
"fmt"
"html/template"
"path"
"strings"
"github.com/Unknwon/com"
"github.com/go-macaron/cache"
"gopkg.in/macaron.v1"
)
const _VERSION = "0.1.0"
func Version() string {
return _VERSION
}
var (
defaultChars = []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}
)
// Captcha represents a captcha service.
type Captcha struct {
store cache.Cache
SubURL string
URLPrefix string
FieldIdName string
FieldCaptchaName string
StdWidth int
StdHeight int
ChallengeNums int
Expiration int64
CachePrefix string
}
// generate key string
func (c *Captcha) key(id string) string {
return c.CachePrefix + id
}
// generate rand chars with default chars
func (c *Captcha) genRandChars() string {
return string(com.RandomCreateBytes(c.ChallengeNums, defaultChars...))
}
// tempalte func for output html
func (c *Captcha) CreateHtml() template.HTML {
value, err := c.CreateCaptcha()
if err != nil {
panic(fmt.Errorf("fail to create captcha: %v", err))
}
return template.HTML(fmt.Sprintf(`<input type="hidden" name="%s" value="%s">
<a class="captcha" href="javascript:">
<img onclick="this.src=('%s%s%s.png?reload='+(new Date()).getTime())" class="captcha-img" src="%s%s%s.png">
</a>`, c.FieldIdName, value, c.SubURL, c.URLPrefix, value, c.SubURL, c.URLPrefix, value))
}
// create a new captcha id
func (c *Captcha) CreateCaptcha() (string, error) {
id := string(com.RandomCreateBytes(15))
if err := c.store.Put(c.key(id), c.genRandChars(), c.Expiration); err != nil {
return "", err
}
return id, nil
}
// verify from a request
func (c *Captcha) VerifyReq(req macaron.Request) bool {
req.ParseForm()
return c.Verify(req.Form.Get(c.FieldIdName), req.Form.Get(c.FieldCaptchaName))
}
// direct verify id and challenge string
func (c *Captcha) Verify(id string, challenge string) bool {
if len(challenge) == 0 || len(id) == 0 {
return false
}
var chars string
key := c.key(id)
if v, ok := c.store.Get(key).(string); ok {
chars = v
} else {
return false
}
defer c.store.Delete(key)
if len(chars) != len(challenge) {
return false
}
// verify challenge
for i, c := range []byte(chars) {
if c != challenge[i]-48 {
return false
}
}
return true
}
type Options struct {
// Suburl path. Default is empty.
SubURL string
// URL prefix of getting captcha pictures. Default is "/captcha/".
URLPrefix string
// Hidden input element ID. Default is "captcha_id".
FieldIdName string
// User input value element name in request form. Default is "captcha".
FieldCaptchaName string
// Challenge number. Default is 6.
ChallengeNums int
// Captcha image width. Default is 240.
Width int
// Captcha image height. Default is 80.
Height int
// Captcha expiration time in seconds. Default is 600.
Expiration int64
// Cache key prefix captcha characters. Default is "captcha_".
CachePrefix string
}
func prepareOptions(options []Options) Options {
var opt Options
if len(options) > 0 {
opt = options[0]
}
opt.SubURL = strings.TrimSuffix(opt.SubURL, "/")
// Defaults.
if len(opt.URLPrefix) == 0 {
opt.URLPrefix = "/captcha/"
} else if opt.URLPrefix[len(opt.URLPrefix)-1] != '/' {
opt.URLPrefix += "/"
}
if len(opt.FieldIdName) == 0 {
opt.FieldIdName = "captcha_id"
}
if len(opt.FieldCaptchaName) == 0 {
opt.FieldCaptchaName = "captcha"
}
if opt.ChallengeNums == 0 {
opt.ChallengeNums = 6
}
if opt.Width == 0 {
opt.Width = stdWidth
}
if opt.Height == 0 {
opt.Height = stdHeight
}
if opt.Expiration == 0 {
opt.Expiration = 600
}
if len(opt.CachePrefix) == 0 {
opt.CachePrefix = "captcha_"
}
return opt
}
// NewCaptcha initializes and returns a captcha with given options.
func NewCaptcha(opt Options) *Captcha {
return &Captcha{
SubURL: opt.SubURL,
URLPrefix: opt.URLPrefix,
FieldIdName: opt.FieldIdName,
FieldCaptchaName: opt.FieldCaptchaName,
StdWidth: opt.Width,
StdHeight: opt.Height,
ChallengeNums: opt.ChallengeNums,
Expiration: opt.Expiration,
CachePrefix: opt.CachePrefix,
}
}
// Captchaer is a middleware that maps a captcha.Captcha service into the Macaron handler chain.
// An single variadic captcha.Options struct can be optionally provided to configure.
// This should be register after cache.Cacher.
func Captchaer(options ...Options) macaron.Handler {
return func(ctx *macaron.Context, cache cache.Cache) {
cpt := NewCaptcha(prepareOptions(options))
cpt.store = cache
if strings.HasPrefix(ctx.Req.URL.Path, cpt.URLPrefix) {
var chars string
id := path.Base(ctx.Req.URL.Path)
if i := strings.Index(id, "."); i > -1 {
id = id[:i]
}
key := cpt.key(id)
// Reload captcha.
if len(ctx.Query("reload")) > 0 {
chars = cpt.genRandChars()
if err := cpt.store.Put(key, chars, cpt.Expiration); err != nil {
ctx.Status(500)
ctx.Write([]byte("captcha reload error"))
panic(fmt.Errorf("reload captcha: %v", err))
}
} else {
if v, ok := cpt.store.Get(key).(string); ok {
chars = v
} else {
ctx.Status(404)
ctx.Write([]byte("captcha not found"))
return
}
}
if _, err := NewImage([]byte(chars), cpt.StdWidth, cpt.StdHeight).WriteTo(ctx.Resp); err != nil {
panic(fmt.Errorf("write captcha: %v", err))
}
return
}
ctx.Data["Captcha"] = cpt
ctx.Map(cpt)
}
}

498
vendor/github.com/go-macaron/captcha/image.go generated vendored Normal file
View File

@@ -0,0 +1,498 @@
// Copyright 2013 Beego Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package captcha
import (
"bytes"
"image"
"image/color"
"image/png"
"io"
"math"
)
const (
fontWidth = 11
fontHeight = 18
blackChar = 1
// Standard width and height of a captcha image.
stdWidth = 240
stdHeight = 80
// Maximum absolute skew factor of a single digit.
maxSkew = 0.7
// Number of background circles.
circleCount = 20
)
var font = [][]byte{
{ // 0
0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0,
0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 0,
0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0,
0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0,
1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0,
1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1,
0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0,
0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0,
0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 0,
0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0,
},
{ // 1
0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0,
0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0,
0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0,
0, 0, 1, 1, 0, 1, 1, 0, 0, 0, 0,
0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 0,
0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
},
{ // 2
0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0,
0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0,
1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 0,
0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0,
0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0,
0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0,
0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0,
0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0,
0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0,
0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0,
0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0,
0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0,
0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0,
0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0,
0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
},
{ // 3
0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0,
1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0,
1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 0,
0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0,
0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0,
0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0,
0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0,
0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0,
0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 0,
0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0,
0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1,
0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,
0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,
0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,
0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1,
1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0,
1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0,
0, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0,
},
{ // 4
0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0,
0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0,
0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0,
0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 0,
0, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0,
0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0,
0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0,
0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 0,
0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 0,
0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 0,
1, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0,
1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0,
0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0,
0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0,
0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0,
},
{ // 5
0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0,
0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0,
0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
0, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0,
0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0,
0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0,
0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1,
0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,
0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,
0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,
0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,
0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1,
1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 0,
1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0,
0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0,
},
{ // 6
0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0,
0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 0,
0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0,
0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0,
1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0,
1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 0,
1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1,
1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1,
0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0,
0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 0,
0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0,
},
{ // 7
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1,
1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0,
0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0,
0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0,
0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0,
0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0,
0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0,
0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0,
0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0,
0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0,
0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0,
0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0,
0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0,
0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0,
0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0,
},
{ // 8
0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0,
0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0,
0, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1,
0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1,
0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1,
0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1,
0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0,
0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 0,
0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0,
0, 0, 1, 1, 1, 0, 1, 1, 1, 0, 0,
0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0,
1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1,
1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0,
0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0,
0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0,
},
{ // 9
0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0,
0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0,
0, 1, 1, 0, 0, 0, 0, 1, 1, 1, 0,
1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0,
1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1,
0, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1,
0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1,
0, 0, 0, 1, 1, 1, 1, 0, 0, 1, 1,
0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,
0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0,
0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0,
0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0,
0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0,
0, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0,
0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0,
},
}
type Image struct {
*image.Paletted
numWidth int
numHeight int
dotSize int
}
var prng = &siprng{}
// randIntn returns a pseudorandom non-negative int in range [0, n).
func randIntn(n int) int {
return prng.Intn(n)
}
// randInt returns a pseudorandom int in range [from, to].
func randInt(from, to int) int {
return prng.Intn(to+1-from) + from
}
// randFloat returns a pseudorandom float64 in range [from, to].
func randFloat(from, to float64) float64 {
return (to-from)*prng.Float64() + from
}
func randomPalette() color.Palette {
p := make([]color.Color, circleCount+1)
// Transparent color.
p[0] = color.RGBA{0xFF, 0xFF, 0xFF, 0x00}
// Primary color.
prim := color.RGBA{
uint8(randIntn(129)),
uint8(randIntn(129)),
uint8(randIntn(129)),
0xFF,
}
p[1] = prim
// Circle colors.
for i := 2; i <= circleCount; i++ {
p[i] = randomBrightness(prim, 255)
}
return p
}
// NewImage returns a new captcha image of the given width and height with the
// given digits, where each digit must be in range 0-9.
func NewImage(digits []byte, width, height int) *Image {
m := new(Image)
m.Paletted = image.NewPaletted(image.Rect(0, 0, width, height), randomPalette())
m.calculateSizes(width, height, len(digits))
// Randomly position captcha inside the image.
maxx := width - (m.numWidth+m.dotSize)*len(digits) - m.dotSize
maxy := height - m.numHeight - m.dotSize*2
var border int
if width > height {
border = height / 5
} else {
border = width / 5
}
x := randInt(border, maxx-border)
y := randInt(border, maxy-border)
// Draw digits.
for _, n := range digits {
m.drawDigit(font[n], x, y)
x += m.numWidth + m.dotSize
}
// Draw strike-through line.
m.strikeThrough()
// Apply wave distortion.
m.distort(randFloat(5, 10), randFloat(100, 200))
// Fill image with random circles.
m.fillWithCircles(circleCount, m.dotSize)
return m
}
// encodedPNG encodes an image to PNG and returns
// the result as a byte slice.
func (m *Image) encodedPNG() []byte {
var buf bytes.Buffer
if err := png.Encode(&buf, m.Paletted); err != nil {
panic(err.Error())
}
return buf.Bytes()
}
// WriteTo writes captcha image in PNG format into the given writer.
func (m *Image) WriteTo(w io.Writer) (int64, error) {
n, err := w.Write(m.encodedPNG())
return int64(n), err
}
func (m *Image) calculateSizes(width, height, ncount int) {
// Goal: fit all digits inside the image.
var border int
if width > height {
border = height / 4
} else {
border = width / 4
}
// Convert everything to floats for calculations.
w := float64(width - border*2)
h := float64(height - border*2)
// fw takes into account 1-dot spacing between digits.
fw := float64(fontWidth + 1)
fh := float64(fontHeight)
nc := float64(ncount)
// Calculate the width of a single digit taking into account only the
// width of the image.
nw := w / nc
// Calculate the height of a digit from this width.
nh := nw * fh / fw
// Digit too high?
if nh > h {
// Fit digits based on height.
nh = h
nw = fw / fh * nh
}
// Calculate dot size.
m.dotSize = int(nh / fh)
// Save everything, making the actual width smaller by 1 dot to account
// for spacing between digits.
m.numWidth = int(nw) - m.dotSize
m.numHeight = int(nh)
}
func (m *Image) drawHorizLine(fromX, toX, y int, colorIdx uint8) {
for x := fromX; x <= toX; x++ {
m.SetColorIndex(x, y, colorIdx)
}
}
func (m *Image) drawCircle(x, y, radius int, colorIdx uint8) {
f := 1 - radius
dfx := 1
dfy := -2 * radius
xo := 0
yo := radius
m.SetColorIndex(x, y+radius, colorIdx)
m.SetColorIndex(x, y-radius, colorIdx)
m.drawHorizLine(x-radius, x+radius, y, colorIdx)
for xo < yo {
if f >= 0 {
yo--
dfy += 2
f += dfy
}
xo++
dfx += 2
f += dfx
m.drawHorizLine(x-xo, x+xo, y+yo, colorIdx)
m.drawHorizLine(x-xo, x+xo, y-yo, colorIdx)
m.drawHorizLine(x-yo, x+yo, y+xo, colorIdx)
m.drawHorizLine(x-yo, x+yo, y-xo, colorIdx)
}
}
func (m *Image) fillWithCircles(n, maxradius int) {
maxx := m.Bounds().Max.X
maxy := m.Bounds().Max.Y
for i := 0; i < n; i++ {
colorIdx := uint8(randInt(1, circleCount-1))
r := randInt(1, maxradius)
m.drawCircle(randInt(r, maxx-r), randInt(r, maxy-r), r, colorIdx)
}
}
func (m *Image) strikeThrough() {
maxx := m.Bounds().Max.X
maxy := m.Bounds().Max.Y
y := randInt(maxy/3, maxy-maxy/3)
amplitude := randFloat(5, 20)
period := randFloat(80, 180)
dx := 2.0 * math.Pi / period
for x := 0; x < maxx; x++ {
xo := amplitude * math.Cos(float64(y)*dx)
yo := amplitude * math.Sin(float64(x)*dx)
for yn := 0; yn < m.dotSize; yn++ {
r := randInt(0, m.dotSize)
m.drawCircle(x+int(xo), y+int(yo)+(yn*m.dotSize), r/2, 1)
}
}
}
func (m *Image) drawDigit(digit []byte, x, y int) {
skf := randFloat(-maxSkew, maxSkew)
xs := float64(x)
r := m.dotSize / 2
y += randInt(-r, r)
for yo := 0; yo < fontHeight; yo++ {
for xo := 0; xo < fontWidth; xo++ {
if digit[yo*fontWidth+xo] != blackChar {
continue
}
m.drawCircle(x+xo*m.dotSize, y+yo*m.dotSize, r, 1)
}
xs += skf
x = int(xs)
}
}
func (m *Image) distort(amplude float64, period float64) {
w := m.Bounds().Max.X
h := m.Bounds().Max.Y
oldm := m.Paletted
newm := image.NewPaletted(image.Rect(0, 0, w, h), oldm.Palette)
dx := 2.0 * math.Pi / period
for x := 0; x < w; x++ {
for y := 0; y < h; y++ {
xo := amplude * math.Sin(float64(y)*dx)
yo := amplude * math.Cos(float64(x)*dx)
newm.SetColorIndex(x, y, oldm.ColorIndexAt(x+int(xo), y+int(yo)))
}
}
m.Paletted = newm
}
func randomBrightness(c color.RGBA, max uint8) color.RGBA {
minc := min3(c.R, c.G, c.B)
maxc := max3(c.R, c.G, c.B)
if maxc > max {
return c
}
n := randIntn(int(max-maxc)) - int(minc)
return color.RGBA{
uint8(int(c.R) + n),
uint8(int(c.G) + n),
uint8(int(c.B) + n),
uint8(c.A),
}
}
func min3(x, y, z uint8) (m uint8) {
m = x
if y < m {
m = y
}
if z < m {
m = z
}
return
}
func max3(x, y, z uint8) (m uint8) {
m = x
if y > m {
m = y
}
if z > m {
m = z
}
return
}

277
vendor/github.com/go-macaron/captcha/siprng.go generated vendored Normal file
View File

@@ -0,0 +1,277 @@
// Copyright 2013 Beego Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package captcha
import (
"crypto/rand"
"encoding/binary"
"io"
"sync"
)
// siprng is PRNG based on SipHash-2-4.
type siprng struct {
mu sync.Mutex
k0, k1, ctr uint64
}
// siphash implements SipHash-2-4, accepting a uint64 as a message.
func siphash(k0, k1, m uint64) uint64 {
// Initialization.
v0 := k0 ^ 0x736f6d6570736575
v1 := k1 ^ 0x646f72616e646f6d
v2 := k0 ^ 0x6c7967656e657261
v3 := k1 ^ 0x7465646279746573
t := uint64(8) << 56
// Compression.
v3 ^= m
// Round 1.
v0 += v1
v1 = v1<<13 | v1>>(64-13)
v1 ^= v0
v0 = v0<<32 | v0>>(64-32)
v2 += v3
v3 = v3<<16 | v3>>(64-16)
v3 ^= v2
v0 += v3
v3 = v3<<21 | v3>>(64-21)
v3 ^= v0
v2 += v1
v1 = v1<<17 | v1>>(64-17)
v1 ^= v2
v2 = v2<<32 | v2>>(64-32)
// Round 2.
v0 += v1
v1 = v1<<13 | v1>>(64-13)
v1 ^= v0
v0 = v0<<32 | v0>>(64-32)
v2 += v3
v3 = v3<<16 | v3>>(64-16)
v3 ^= v2
v0 += v3
v3 = v3<<21 | v3>>(64-21)
v3 ^= v0
v2 += v1
v1 = v1<<17 | v1>>(64-17)
v1 ^= v2
v2 = v2<<32 | v2>>(64-32)
v0 ^= m
// Compress last block.
v3 ^= t
// Round 1.
v0 += v1
v1 = v1<<13 | v1>>(64-13)
v1 ^= v0
v0 = v0<<32 | v0>>(64-32)
v2 += v3
v3 = v3<<16 | v3>>(64-16)
v3 ^= v2
v0 += v3
v3 = v3<<21 | v3>>(64-21)
v3 ^= v0
v2 += v1
v1 = v1<<17 | v1>>(64-17)
v1 ^= v2
v2 = v2<<32 | v2>>(64-32)
// Round 2.
v0 += v1
v1 = v1<<13 | v1>>(64-13)
v1 ^= v0
v0 = v0<<32 | v0>>(64-32)
v2 += v3
v3 = v3<<16 | v3>>(64-16)
v3 ^= v2
v0 += v3
v3 = v3<<21 | v3>>(64-21)
v3 ^= v0
v2 += v1
v1 = v1<<17 | v1>>(64-17)
v1 ^= v2
v2 = v2<<32 | v2>>(64-32)
v0 ^= t
// Finalization.
v2 ^= 0xff
// Round 1.
v0 += v1
v1 = v1<<13 | v1>>(64-13)
v1 ^= v0
v0 = v0<<32 | v0>>(64-32)
v2 += v3
v3 = v3<<16 | v3>>(64-16)
v3 ^= v2
v0 += v3
v3 = v3<<21 | v3>>(64-21)
v3 ^= v0
v2 += v1
v1 = v1<<17 | v1>>(64-17)
v1 ^= v2
v2 = v2<<32 | v2>>(64-32)
// Round 2.
v0 += v1
v1 = v1<<13 | v1>>(64-13)
v1 ^= v0
v0 = v0<<32 | v0>>(64-32)
v2 += v3
v3 = v3<<16 | v3>>(64-16)
v3 ^= v2
v0 += v3
v3 = v3<<21 | v3>>(64-21)
v3 ^= v0
v2 += v1
v1 = v1<<17 | v1>>(64-17)
v1 ^= v2
v2 = v2<<32 | v2>>(64-32)
// Round 3.
v0 += v1
v1 = v1<<13 | v1>>(64-13)
v1 ^= v0
v0 = v0<<32 | v0>>(64-32)
v2 += v3
v3 = v3<<16 | v3>>(64-16)
v3 ^= v2
v0 += v3
v3 = v3<<21 | v3>>(64-21)
v3 ^= v0
v2 += v1
v1 = v1<<17 | v1>>(64-17)
v1 ^= v2
v2 = v2<<32 | v2>>(64-32)
// Round 4.
v0 += v1
v1 = v1<<13 | v1>>(64-13)
v1 ^= v0
v0 = v0<<32 | v0>>(64-32)
v2 += v3
v3 = v3<<16 | v3>>(64-16)
v3 ^= v2
v0 += v3
v3 = v3<<21 | v3>>(64-21)
v3 ^= v0
v2 += v1
v1 = v1<<17 | v1>>(64-17)
v1 ^= v2
v2 = v2<<32 | v2>>(64-32)
return v0 ^ v1 ^ v2 ^ v3
}
// rekey sets a new PRNG key, which is read from crypto/rand.
func (p *siprng) rekey() {
var k [16]byte
if _, err := io.ReadFull(rand.Reader, k[:]); err != nil {
panic(err.Error())
}
p.k0 = binary.LittleEndian.Uint64(k[0:8])
p.k1 = binary.LittleEndian.Uint64(k[8:16])
p.ctr = 1
}
// Uint64 returns a new pseudorandom uint64.
// It rekeys PRNG on the first call and every 64 MB of generated data.
func (p *siprng) Uint64() uint64 {
p.mu.Lock()
if p.ctr == 0 || p.ctr > 8*1024*1024 {
p.rekey()
}
v := siphash(p.k0, p.k1, p.ctr)
p.ctr++
p.mu.Unlock()
return v
}
func (p *siprng) Int63() int64 {
return int64(p.Uint64() & 0x7fffffffffffffff)
}
func (p *siprng) Uint32() uint32 {
return uint32(p.Uint64())
}
func (p *siprng) Int31() int32 {
return int32(p.Uint32() & 0x7fffffff)
}
func (p *siprng) Intn(n int) int {
if n <= 0 {
panic("invalid argument to Intn")
}
if n <= 1<<31-1 {
return int(p.Int31n(int32(n)))
}
return int(p.Int63n(int64(n)))
}
func (p *siprng) Int63n(n int64) int64 {
if n <= 0 {
panic("invalid argument to Int63n")
}
max := int64((1 << 63) - 1 - (1<<63)%uint64(n))
v := p.Int63()
for v > max {
v = p.Int63()
}
return v % n
}
func (p *siprng) Int31n(n int32) int32 {
if n <= 0 {
panic("invalid argument to Int31n")
}
max := int32((1 << 31) - 1 - (1<<31)%uint32(n))
v := p.Int31()
for v > max {
v = p.Int31()
}
return v % n
}
func (p *siprng) Float64() float64 { return float64(p.Int63()) / (1 << 63) }