diff options
Diffstat (limited to 'vendor/github.com/go-macaron/captcha')
| -rw-r--r-- | vendor/github.com/go-macaron/captcha/LICENSE | 191 | ||||
| -rw-r--r-- | vendor/github.com/go-macaron/captcha/README.md | 16 | ||||
| -rw-r--r-- | vendor/github.com/go-macaron/captcha/captcha.go | 241 | ||||
| -rw-r--r-- | vendor/github.com/go-macaron/captcha/image.go | 498 | ||||
| -rw-r--r-- | vendor/github.com/go-macaron/captcha/siprng.go | 277 |
5 files changed, 0 insertions, 1223 deletions
diff --git a/vendor/github.com/go-macaron/captcha/LICENSE b/vendor/github.com/go-macaron/captcha/LICENSE deleted file mode 100644 index 8405e89a..00000000 --- a/vendor/github.com/go-macaron/captcha/LICENSE +++ /dev/null @@ -1,191 +0,0 @@ -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. 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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.
\ No newline at end of file diff --git a/vendor/github.com/go-macaron/captcha/README.md b/vendor/github.com/go-macaron/captcha/README.md deleted file mode 100644 index 5eab6f3f..00000000 --- a/vendor/github.com/go-macaron/captcha/README.md +++ /dev/null @@ -1,16 +0,0 @@ -# captcha [](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.
\ No newline at end of file diff --git a/vendor/github.com/go-macaron/captcha/captcha.go b/vendor/github.com/go-macaron/captcha/captcha.go deleted file mode 100644 index 687c67a9..00000000 --- a/vendor/github.com/go-macaron/captcha/captcha.go +++ /dev/null @@ -1,241 +0,0 @@ -// 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:" tabindex="-1"> - <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) - } -} diff --git a/vendor/github.com/go-macaron/captcha/image.go b/vendor/github.com/go-macaron/captcha/image.go deleted file mode 100644 index 0bd5cb53..00000000 --- a/vendor/github.com/go-macaron/captcha/image.go +++ /dev/null @@ -1,498 +0,0 @@ -// 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 -} diff --git a/vendor/github.com/go-macaron/captcha/siprng.go b/vendor/github.com/go-macaron/captcha/siprng.go deleted file mode 100644 index 53a06d68..00000000 --- a/vendor/github.com/go-macaron/captcha/siprng.go +++ /dev/null @@ -1,277 +0,0 @@ -// 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) } |