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。
About Face 3
Alan Cooper、Robert Reimann、David Cronin / John Wiley & Sons / 2007-5-15 / GBP 28.99
* The return of the authoritative bestseller includes all new content relevant to the popularization of how About Face maintains its relevance to new Web technologies such as AJAX and mobile platforms......一起来看看 《About Face 3》 这本书的介绍吧!
HTML 编码/解码
HTML 编码/解码
html转js在线工具
html转js在线工具