内容简介:Base64 Captchas Manager, supports multiple(digit, math, audio, string, chinese etc.) and(memory, redis, memcached etc.).Preview:
Captchas
Base64 Captchas Manager, supports multiple(digit, math, audio, string, chinese etc.) and(memory, redis, memcached etc.).
Usage
Preview: http://129.204.189.159:10000/ .
$ cd example $ go run main.go
Quick Start
package main import ( "encoding/json" "fmt" "io" "log" "net/http" "text/template" "github.com/clevergo/captchas" "github.com/clevergo/captchas/drivers" "github.com/clevergo/captchas/memstore" ) var ( store = memstore.New() // memory store. driver = drivers.NewDigit() // digit driver. manager = captchas.New(store, driver) // manager tmpl = template.Must(template.New("captcha").Parse(` <html> <body> <form action="/validate" method="POST"> <input name="captcha"> {{ .captcha.HTMLField "captcha_id" }} <input type="submit" value="Submit"> </form> </body> </html> `)) ) func main() { http.HandleFunc("/generate", generate) http.HandleFunc("/validate", validate) log.Println(http.ListenAndServe(":8080", http.DefaultServeMux)) } // generates a new captcha func generate(w http.ResponseWriter, r *http.Request) { captcha, err := manager.Generate() if err != nil { http.Error(w, err.Error(), 500) return } // returns JSON data. if r.URL.Query().Get("format") == "json" { v := map[string]string{ "captcha_id": captcha.ID(), // captcha ID. "captcha_data": captcha.EncodeToString(), // base64 encode string. } data, _ := json.Marshal(v) w.Write(data) return } // render captcha via template. tmpl.Execute(w, map[string]interface{}{ "captcha": captcha, }) } // validates a captcha. func validate(w http.ResponseWriter, r *http.Request) { captchaID := r.PostFormValue("captcha_id") captcha := r.PostFormValue("captcha") // verify if err := manager.Verify(captchaID, captcha, true); err != nil { io.WriteString(w, fmt.Sprintf("captcha is invalid: %s", err.Error())) return } io.WriteString(w, "valid") }
Drivers
import "github.com/clevergo/captchas/drivers"
Digit
// all options are optional. opts := []drivers.DigitOption{ drivers.DigitHeight(50), drivers.DigitWidth(120), drivers.DigitLength(6), drivers.DigitMaxSkew(0.8), drivers.DigitDotCount(80), } driver := drivers.NewDigit(opts...)
Audio
// all options are optional. opts := []drivers.AudioOption{ drivers.AudioLangauge("en"), drivers.AudioLength(6), } driver := drivers.NewAudio(opts...)
Math
// all options are optional. opts := []drivers.MathOption{ drivers.MathHeight(50), drivers.MathWidth(120), drivers.MathNoiseCount(0), drivers.MathFonts([]string{}), drivers.MathBGColor(&color.RGBA{}), } driver := drivers.NewMath(opts...)
String
// all options are optional. opts := []drivers.StringOption{ drivers.StringHeight(50), drivers.StringWidth(120), drivers.StringLength(4), drivers.StringNoiseCount(0), drivers.StringFonts([]string{}), drivers.StringSource("abcdefghijklmnopqrstuvwxyz"), drivers.StringBGColor(&color.RGBA{}), } driver := drivers.NewString(opts...)
Chinese
// all options are optional. opts := []drivers.ChineseOption{ drivers.ChineseHeight(50), drivers.ChineseWidth(120), drivers.ChineseLength(4), drivers.ChineseNoiseCount(0), drivers.ChineseFonts([]string{"wqy-microhei.ttc"}), drivers.ChineseSource("零一二三四五六七八九十"), drivers.ChineseBGColor(&color.RGBA{}), } driver := drivers.NewChinese(opts...)
Stores
Memory
import "github.com/clevergo/captchas/memstore"
store := memstore.New( memstore.Expiration(10*time.Minute), // captcha expiration, optional. memstore.GCInterval(time.Minute), // garbage collection interval to delete expired captcha, optional. )
Inspired by scs.memstore .
Redis
import ( "github.com/clevergo/captchas/redisstore" "github.com/go-redis/redis/v7" )
// redis client. client := redis.NewClient(&redis.Options{ Addr: "localhost:6379", }) store := redisstore.New( client, redisstore.Expiration(expiration), // captcha expiration, optional. redisstore.Prefix("caotchas"), // redis key prefix, optional. )
Memcached
import ( "github.com/bradfitz/gomemcache/memcache" "github.com/clevergo/captchas/memcachedstore" )
// client. client := memcache.New("localhost:11211") store := memcachedstore.New( client, memcachedstore.Expiration(int32(600)), // captcha expiration, optional. memcachedstore.Prefix("captchas"), // key prefix, optional. )
以上所述就是小编给大家介绍的《Go Base64 验证码管理器》,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对 码农网 的支持!
猜你喜欢:- Kubernetes 身份管理:身份验证
- Go Base64 验证码管理器
- TIMO 后台管理系统 v2.0.1 发布,加入 jwt 身份验证组件,基于 Spring Boot
- TIMO 后台管理系统 v2.0.1 发布,加入 jwt 身份验证组件,基于 Spring Boot
- 表单正则验证及文件上传验证功能
- angular 实现同步验证器跨字段验证
本站部分资源来源于网络,本站转载出于传递更多信息之目的,版权归原作者或者来源机构所有,如转载稿涉及版权问题,请联系我们。
Getting Real
Jason Fried、Heinemeier David Hansson、Matthew Linderman / 37signals / 2009-11-18 / USD 24.99
Getting Real details the business, design, programming, and marketing principles of 37signals. The book is packed with keep-it-simple insights, contrarian points of view, and unconventional approaches......一起来看看 《Getting Real》 这本书的介绍吧!