mirror of
https://github.com/WJQSERVER-STUDIO/ghproxy.git
synced 2026-02-03 00:01:10 +08:00
286 lines
7.3 KiB
Go
286 lines
7.3 KiB
Go
package proxy
|
||
|
||
import (
|
||
"bufio"
|
||
"compress/gzip"
|
||
"fmt"
|
||
"ghproxy/config"
|
||
"io"
|
||
"regexp"
|
||
"strings"
|
||
)
|
||
|
||
// 定义错误类型, error承载描述, 便于处理
|
||
type MatcherErrors struct {
|
||
Code int
|
||
Msg string
|
||
Err error
|
||
}
|
||
|
||
var (
|
||
ErrInvalidURL = &MatcherErrors{
|
||
Code: 403,
|
||
Msg: "Invalid URL Format",
|
||
}
|
||
ErrAuthHeaderUnavailable = &MatcherErrors{
|
||
Code: 403,
|
||
Msg: "AuthHeader Unavailable",
|
||
}
|
||
)
|
||
|
||
func (e *MatcherErrors) Error() string {
|
||
if e.Err != nil {
|
||
return fmt.Sprintf("Code: %d, Msg: %s, Err: %s", e.Code, e.Msg, e.Err.Error())
|
||
}
|
||
return fmt.Sprintf("Code: %d, Msg: %s", e.Code, e.Msg)
|
||
}
|
||
|
||
func (e *MatcherErrors) Unwrap() error {
|
||
return e.Err
|
||
}
|
||
|
||
func Matcher(rawPath string, cfg *config.Config) (string, string, string, error) {
|
||
var (
|
||
user string
|
||
repo string
|
||
matcher string
|
||
)
|
||
// 匹配 "https://github.com"开头的链接
|
||
if strings.HasPrefix(rawPath, "https://github.com") {
|
||
remainingPath := strings.TrimPrefix(rawPath, "https://github.com")
|
||
if strings.HasPrefix(remainingPath, "/") {
|
||
remainingPath = strings.TrimPrefix(remainingPath, "/")
|
||
}
|
||
// 预期格式/user/repo/more...
|
||
// 取出user和repo和最后部分
|
||
parts := strings.Split(remainingPath, "/")
|
||
if len(parts) <= 2 {
|
||
return "", "", "", ErrInvalidURL
|
||
}
|
||
user = parts[0]
|
||
repo = parts[1]
|
||
// 匹配 "https://github.com"开头的链接
|
||
if len(parts) >= 3 {
|
||
switch parts[2] {
|
||
case "releases", "archive":
|
||
matcher = "releases"
|
||
case "blob", "raw":
|
||
matcher = "blob"
|
||
case "info", "git-upload-pack":
|
||
matcher = "clone"
|
||
default:
|
||
return "", "", "", ErrInvalidURL
|
||
}
|
||
}
|
||
return user, repo, matcher, nil
|
||
}
|
||
// 匹配 "https://raw"开头的链接
|
||
if strings.HasPrefix(rawPath, "https://raw") {
|
||
remainingPath := strings.TrimPrefix(rawPath, "https://")
|
||
parts := strings.Split(remainingPath, "/")
|
||
if len(parts) <= 3 {
|
||
return "", "", "", ErrInvalidURL
|
||
}
|
||
user = parts[1]
|
||
repo = parts[2]
|
||
matcher = "raw"
|
||
|
||
return user, repo, matcher, nil
|
||
}
|
||
// 匹配 "https://gist"开头的链接
|
||
if strings.HasPrefix(rawPath, "https://gist") {
|
||
remainingPath := strings.TrimPrefix(rawPath, "https://")
|
||
parts := strings.Split(remainingPath, "/")
|
||
if len(parts) <= 3 {
|
||
return "", "", "", ErrInvalidURL
|
||
}
|
||
user = parts[1]
|
||
repo = ""
|
||
matcher = "gist"
|
||
return user, repo, matcher, nil
|
||
}
|
||
// 匹配 "https://api.github.com/"开头的链接
|
||
if strings.HasPrefix(rawPath, "https://api.github.com/") {
|
||
matcher = "api"
|
||
remainingPath := strings.TrimPrefix(rawPath, "https://api.github.com/")
|
||
|
||
parts := strings.Split(remainingPath, "/")
|
||
if parts[0] == "repos" {
|
||
user = parts[1]
|
||
repo = parts[2]
|
||
}
|
||
if parts[0] == "users" {
|
||
user = parts[1]
|
||
}
|
||
if !cfg.Auth.ForceAllowApi {
|
||
if cfg.Auth.AuthMethod != "header" || !cfg.Auth.Enabled {
|
||
return "", "", "", ErrAuthHeaderUnavailable
|
||
}
|
||
}
|
||
return user, repo, matcher, nil
|
||
}
|
||
return "", "", "", ErrInvalidURL
|
||
}
|
||
|
||
func EditorMatcher(rawPath string, cfg *config.Config) (bool, string, error) {
|
||
var (
|
||
matcher string
|
||
)
|
||
// 匹配 "https://github.com"开头的链接
|
||
if strings.HasPrefix(rawPath, "https://github.com") {
|
||
remainingPath := strings.TrimPrefix(rawPath, "https://github.com")
|
||
if strings.HasPrefix(remainingPath, "/") {
|
||
remainingPath = strings.TrimPrefix(remainingPath, "/")
|
||
}
|
||
return true, "", nil
|
||
}
|
||
// 匹配 "https://raw.githubusercontent.com"开头的链接
|
||
if strings.HasPrefix(rawPath, "https://raw.githubusercontent.com") {
|
||
return true, matcher, nil
|
||
}
|
||
// 匹配 "https://raw.github.com"开头的链接
|
||
if strings.HasPrefix(rawPath, "https://raw.github.com") {
|
||
return true, matcher, nil
|
||
}
|
||
// 匹配 "https://gist.githubusercontent.com"开头的链接
|
||
if strings.HasPrefix(rawPath, "https://gist.githubusercontent.com") {
|
||
return true, matcher, nil
|
||
}
|
||
// 匹配 "https://gist.github.com"开头的链接
|
||
if strings.HasPrefix(rawPath, "https://gist.github.com") {
|
||
return true, matcher, nil
|
||
}
|
||
// 匹配 "https://api.github.com/"开头的链接
|
||
if strings.HasPrefix(rawPath, "https://api.github.com") {
|
||
matcher = "api"
|
||
return true, matcher, nil
|
||
}
|
||
return false, "", ErrInvalidURL
|
||
}
|
||
|
||
// 匹配文件扩展名是sh的rawPath
|
||
func MatcherShell(rawPath string) bool {
|
||
if strings.HasSuffix(rawPath, ".sh") {
|
||
return true
|
||
}
|
||
return false
|
||
}
|
||
|
||
// LinkProcessor 是一个函数类型，用于处理提取到的链接。
|
||
type LinkProcessor func(string) string
|
||
|
||
// 自定义 URL 修改函数
|
||
func modifyURL(url string, host string, cfg *config.Config) string {
|
||
// 去除url内的https://或http://
|
||
matched, _, err := EditorMatcher(url, cfg)
|
||
if err != nil {
|
||
logDump("Invalid URL: %s", url)
|
||
return url
|
||
}
|
||
if matched {
|
||
|
||
u := strings.TrimPrefix(url, "https://")
|
||
u = strings.TrimPrefix(url, "http://")
|
||
logDump("Modified URL: %s", "https://"+host+"/"+u)
|
||
return "https://" + host + "/" + u
|
||
}
|
||
return url
|
||
}
|
||
|
||
var (
|
||
matchedMatchers = []string{
|
||
"blob",
|
||
"raw",
|
||
"gist",
|
||
}
|
||
)
|
||
|
||
// matchString 检查目标字符串是否在给定的字符串集合中
|
||
func matchString(target string, stringsToMatch []string) bool {
|
||
matchMap := make(map[string]struct{}, len(stringsToMatch))
|
||
for _, str := range stringsToMatch {
|
||
matchMap[str] = struct{}{}
|
||
}
|
||
_, exists := matchMap[target]
|
||
return exists
|
||
}
|
||
|
||
// processLinks 处理链接并将结果写入输出流
|
||
func processLinks(input io.Reader, output io.Writer, compress string, host string, cfg *config.Config) (written int64, err error) {
|
||
var reader *bufio.Reader
|
||
|
||
if compress == "gzip" {
|
||
// 解压gzip
|
||
gzipReader, err := gzip.NewReader(input)
|
||
if err != nil {
|
||
return 0, fmt.Errorf("gzip解压错误: %v", err)
|
||
}
|
||
defer gzipReader.Close()
|
||
reader = bufio.NewReader(gzipReader)
|
||
} else {
|
||
reader = bufio.NewReader(input)
|
||
}
|
||
|
||
var writer *bufio.Writer
|
||
var gzipWriter *gzip.Writer
|
||
|
||
// 根据是否gzip确定 writer 的创建
|
||
if compress == "gzip" {
|
||
gzipWriter = gzip.NewWriter(output)
|
||
writer = bufio.NewWriterSize(gzipWriter, 4096) //设置缓冲区大小
|
||
} else {
|
||
writer = bufio.NewWriterSize(output, 4096)
|
||
}
|
||
|
||
//确保writer关闭
|
||
defer func() {
|
||
var closeErr error // 局部变量，用于保存defer中可能发生的错误
|
||
|
||
if gzipWriter != nil {
|
||
if closeErr = gzipWriter.Close(); closeErr != nil {
|
||
logError("gzipWriter close failed %v", closeErr)
|
||
// 如果已经存在错误，则保留。否则，记录此错误。
|
||
if err == nil {
|
||
err = closeErr
|
||
}
|
||
}
|
||
}
|
||
if flushErr := writer.Flush(); flushErr != nil {
|
||
logError("writer flush failed %v", flushErr)
|
||
// 如果已经存在错误，则保留。否则，记录此错误。
|
||
if err == nil {
|
||
err = flushErr
|
||
}
|
||
}
|
||
}()
|
||
|
||
// 使用正则表达式匹配 http 和 https 链接
|
||
urlPattern := regexp.MustCompile(`https?://[^\s'"]+`)
|
||
for {
|
||
line, err := reader.ReadString('\n')
|
||
if err != nil {
|
||
if err == io.EOF {
|
||
break // 文件结束
|
||
}
|
||
return written, fmt.Errorf("读取行错误: %v", err) // 传递错误
|
||
}
|
||
|
||
// 替换所有匹配的 URL
|
||
modifiedLine := urlPattern.ReplaceAllStringFunc(line, func(originalURL string) string {
|
||
return modifyURL(originalURL, host, cfg)
|
||
})
|
||
|
||
n, werr := writer.WriteString(modifiedLine)
|
||
written += int64(n) // 更新写入的字节数
|
||
if werr != nil {
|
||
return written, fmt.Errorf("写入文件错误: %v", werr) // 传递错误
|
||
}
|
||
}
|
||
|
||
// 在返回之前，再刷新一次
|
||
if fErr := writer.Flush(); fErr != nil {
|
||
return written, fErr
|
||
}
|
||
|
||
return written, nil
|
||
}
|