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webdriver.go
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webdriver.go
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/*
Nging is a toolbox for webmasters
Copyright (C) 2018-present Wenhui Shen <swh@admpub.com>
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/>.
*/
package webdriver
import (
"fmt"
"net/url"
"strings"
"time"
"github.com/admpub/nging/application/library/collector"
"github.com/tebeka/selenium"
"github.com/webx-top/echo"
"github.com/webx-top/echo/param"
)
func init() {
collector.Browsers[`webdriver`] = New()
}
func New() *WebDriver {
return &WebDriver{
Base: &collector.Base{},
}
}
type WebDriver struct {
Driver selenium.WebDriver
service *selenium.Service
*collector.Base
}
func (s *WebDriver) Start(opt echo.Store) (err error) {
if err = s.Base.Start(opt); err != nil {
return
}
browserName := opt.String(`browserName`, `chrome`)
//chromedriver 可从 http://npm.taobao.org/mirrors/chromedriver/ 下载
driverPath := opt.String(`driverPath`, ChromeDriverDefaultPath())
servicePort := opt.Int(`servicePort`, defaultPort)
var opts []selenium.ServiceOption
switch v := opt.Get(`serviceOption`).(type) {
case []selenium.ServiceOption:
opts = v
case selenium.ServiceOption:
opts = append(opts, v)
}
// set browser as chrome
caps := selenium.Capabilities{"browserName": browserName}
switch browserName {
case `chrome`:
chromeDriverOption(caps)
s.service, err = selenium.NewChromeDriverService(driverPath, servicePort, opts...)
case `firefox`:
s.service, err = selenium.NewGeckoDriverService(driverPath, servicePort, opts...)
default:
s.service, err = selenium.NewSeleniumService(driverPath, servicePort, opts...)
}
if err != nil {
return
}
if len(s.Proxy) > 0 {
proxyConfig := selenium.Proxy{
Type: selenium.Manual,
}
var proxyURL *url.URL
proxyURL, err = url.Parse(s.Proxy)
if err != nil {
return
}
switch strings.TrimSuffix(proxyURL.Scheme, `:`) {
case `http`:
proxyConfig.HTTP = s.Proxy
proxyConfig.HTTPPort = param.String(proxyURL.Port()).Int()
case `https`:
proxyConfig.SSL = s.Proxy
proxyConfig.SSLPort = param.String(proxyURL.Port()).Int()
case `socks5`:
proxyConfig.SOCKS = proxyURL.Host
proxyConfig.SocksPort = param.String(proxyURL.Port()).Int()
}
if proxyURL.User != nil {
pwd, ok := proxyURL.User.Password()
if ok {
proxyConfig.SOCKSPassword = pwd
}
proxyConfig.SOCKSUsername = proxyURL.User.Username()
}
caps.AddProxy(proxyConfig)
}
// remote to selenium server
s.Driver, err = selenium.NewRemote(caps, fmt.Sprintf(serivceAPI, servicePort))
if err == nil {
if s.Timeout > 0 {
s.Driver.SetPageLoadTimeout(time.Duration(s.Timeout) * time.Second)
//s.Driver.SetAsyncScriptTimeout(time.Duration(s.Timeout) * time.Second)
}
}
/*
//循环执行一段逻辑。
s.Driver.WaitWithTimeoutAndInterval(func(WebDriver) (bool, error){
// 如果第一个值返回true,则退出循环,返回false继续循环
// 第二个参数不返回nil时,会退出循环并返回一个错误
return true,nil
},60*time.Second,100*time.Millisecond)
// */
return
}
func (s *WebDriver) Close() error {
err := s.Driver.Quit()
if err == nil {
err = s.service.Stop()
}
return err
}
func (s *WebDriver) Name() string {
return `webdriver`
}
func (s *WebDriver) Description() string {
return ``
}
func (s *WebDriver) Do(pageURL string, data echo.Store) ([]byte, error) {
p := Page{Driver: s.Driver}
err := p.Driver.Get(pageURL)
if err != nil {
return nil, err
}
var html string
html, err = p.Driver.PageSource()
if err != nil {
return nil, err
}
s.Sleep()
return []byte(html), err
}