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GoEdgeNode/internal/nodes/http_request_page.go
T
2021-12-19 11:32:26 +08:00

125 lines
3.3 KiB
Go

package nodes
import (
"github.com/TeaOSLab/EdgeCommon/pkg/serverconfigs/shared"
"github.com/TeaOSLab/EdgeNode/internal/remotelogs"
"github.com/TeaOSLab/EdgeNode/internal/utils"
"github.com/iwind/TeaGo/Tea"
"github.com/iwind/TeaGo/logs"
"net/http"
"os"
"regexp"
)
var urlPrefixRegexp = regexp.MustCompile("^(?i)(http|https|ftp)://")
// 请求特殊页面
func (this *HTTPRequest) doPage(status int) (shouldStop bool) {
if len(this.web.Pages) == 0 {
return false
}
for _, page := range this.web.Pages {
if page.Match(status) {
if len(page.BodyType) == 0 || page.BodyType == shared.BodyTypeURL {
if urlPrefixRegexp.MatchString(page.URL) {
var newStatus = page.NewStatus
if newStatus <= 0 {
newStatus = status
}
this.doURL(http.MethodGet, page.URL, "", newStatus, true)
return true
} else {
file := Tea.Root + Tea.DS + page.URL
fp, err := os.Open(file)
if err != nil {
logs.Error(err)
msg := "404 page not found: '" + page.URL + "'"
this.writer.WriteHeader(http.StatusNotFound)
_, err := this.writer.Write([]byte(msg))
if err != nil {
logs.Error(err)
}
return true
}
stat, err := fp.Stat()
if err != nil {
logs.Error(err)
msg := "404 could not read page content: '" + page.URL + "'"
this.writer.WriteHeader(http.StatusNotFound)
_, err := this.writer.Write([]byte(msg))
if err != nil {
logs.Error(err)
}
return true
}
// 修改状态码
if page.NewStatus > 0 {
// 自定义响应Headers
this.processResponseHeaders(page.NewStatus)
this.writer.Prepare(stat.Size(), page.NewStatus)
this.writer.WriteHeader(page.NewStatus)
} else {
this.processResponseHeaders(status)
this.writer.Prepare(stat.Size(), status)
this.writer.WriteHeader(status)
}
buf := utils.BytePool1k.Get()
_, err = utils.CopyWithFilter(this.writer, fp, buf, func(p []byte) []byte {
return []byte(this.Format(string(p)))
})
utils.BytePool1k.Put(buf)
if err != nil {
if !this.canIgnore(err) {
remotelogs.Warn("HTTP_REQUEST_PAGE", "write to client failed: "+err.Error())
}
} else {
this.writer.SetOk()
}
err = fp.Close()
if err != nil {
logs.Error(err)
}
}
return true
} else if page.BodyType == shared.BodyTypeHTML {
// 这里需要实现设置Status,因为在Format()中可以获取${status}等变量
if page.NewStatus > 0 {
this.writer.statusCode = page.NewStatus
} else {
this.writer.statusCode = status
}
var content = this.Format(page.Body)
// 修改状态码
if page.NewStatus > 0 {
// 自定义响应Headers
this.processResponseHeaders(page.NewStatus)
this.writer.Prepare(int64(len(content)), page.NewStatus)
this.writer.WriteHeader(page.NewStatus)
} else {
this.processResponseHeaders(status)
this.writer.Prepare(int64(len(content)), status)
this.writer.WriteHeader(status)
}
_, err := this.writer.WriteString(content)
if err != nil {
if !this.canIgnore(err) {
remotelogs.Warn("HTTP_REQUEST_PAGE", "write to client failed: "+err.Error())
}
} else {
this.writer.SetOk()
}
return true
}
}
}
return false
}