mirror of
https://github.com/woodchen-ink/webp_server_go.git
synced 2025-07-18 13:42:02 +08:00
feat(config, handler): Remove IMG_PATH config and update IMG_MAP handling, add root path greeting
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@ -31,6 +31,8 @@
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* 使用流式JSON编码器
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* 内存使用监控
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6. 根目录设置打招呼
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7. 移除`IMG_PATH`的配置方式, 只保留`IMG_MAP`.
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8. 当前缀与`IMG_MAP`不匹配时, 直接返回错误
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<p align="center">
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<img src="./pics/webp_server.png"/>
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@ -137,7 +137,7 @@ func LoadConfig() {
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decoder := json.NewDecoder(jsonObject)
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_ = decoder.Decode(&Config)
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_ = jsonObject.Close()
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switchProxyMode()
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Config.ImageMap = parseImgMap(Config.ImageMap)
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if slices.Contains(Config.ConvertTypes, "webp") {
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@ -282,12 +282,12 @@ func parseImgMap(imgMap map[string]string) map[string]string {
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var parsedImgMap = map[string]string{}
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httpRegexpMatcher := regexp.MustCompile(HttpRegexp)
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for uriMap, uriMapTarget := range imgMap {
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if httpRegexpMatcher.Match([]byte(uriMap)) || strings.HasPrefix(uriMap, "/") {
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if httpRegexpMatcher.Match([]byte(uriMapTarget)) || strings.HasPrefix(uriMap, "/") {
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// Valid
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parsedImgMap[uriMap] = uriMapTarget
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} else {
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// Invalid
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log.Warnf("IMG_MAP key '%s' does matches '%s' or starts with '/' - skipped", uriMap, HttpRegexp)
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log.Warnf("IMG_MAP 值'%s'与'%s'不匹配或键不以“/”开头 -已跳过", uriMapTarget, HttpRegexp)
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}
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}
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return parsedImgMap
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@ -299,12 +299,3 @@ type ExtraParams struct {
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MaxWidth int // in px
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MaxHeight int // in px
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}
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func switchProxyMode() {
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matched, _ := regexp.MatchString(HttpRegexp, Config.ImgPath)
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if matched {
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// Enable proxy based on ImgPath should be deprecated in future versions
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log.Warn("Enable proxy based on ImgPath will be deprecated in future versions. Use IMG_MAP config options instead")
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ProxyMode = true
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}
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}
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@ -4,7 +4,6 @@ import (
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"net/http"
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"net/url"
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"path"
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"regexp"
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"strconv"
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"strings"
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"webp_server_go/config"
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@ -16,43 +15,29 @@ import (
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)
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func Convert(c *fiber.Ctx) error {
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// this function need to do:
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// 1. get request path, query string
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// 2. generate rawImagePath, could be local path or remote url(possible with query string)
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// 3. pass it to encoder, get the result, send it back
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// normal http request will start with /
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// 检查路径是否以 "/" 开头
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if !strings.HasPrefix(c.Path(), "/") {
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return c.SendStatus(http.StatusBadRequest)
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}
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// 处理根路径请求
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// 检查是否为根路径
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if c.Path() == "/" {
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return c.SendString("Welcome to CZL WebP Server")
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}
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var (
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reqHostname = c.Hostname()
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reqHost = c.Protocol() + "://" + reqHostname // http://www.example.com:8000
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reqHeader = &c.Request().Header
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reqURIRaw, _ = url.QueryUnescape(c.Path()) // /mypic/123.jpg
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reqURIwithQueryRaw, _ = url.QueryUnescape(c.OriginalURL()) // /mypic/123.jpg?someother=200&somebugs=200
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reqURI = path.Clean(reqURIRaw) // delete ../ in reqURI to mitigate directory traversal
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reqURIwithQuery = path.Clean(reqURIwithQueryRaw) // Sometimes reqURIwithQuery can be https://example.tld/mypic/123.jpg?someother=200&somebugs=200, we need to extract it
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reqURIRaw, _ = url.QueryUnescape(c.Path())
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reqURIwithQueryRaw, _ = url.QueryUnescape(c.OriginalURL())
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reqURI = path.Clean(reqURIRaw)
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reqURIwithQuery = path.Clean(reqURIwithQueryRaw)
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filename = path.Base(reqURI)
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realRemoteAddr = ""
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targetHostName = config.LocalHostAlias
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targetHost = config.Config.ImgPath
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proxyMode = config.ProxyMode
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mapMode = false
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targetHostName = ""
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targetHost = ""
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width, _ = strconv.Atoi(c.Query("width")) // Extra Params
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height, _ = strconv.Atoi(c.Query("height")) // Extra Params
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maxHeight, _ = strconv.Atoi(c.Query("max_height")) // Extra Params
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maxWidth, _ = strconv.Atoi(c.Query("max_width")) // Extra Params
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width, _ = strconv.Atoi(c.Query("width"))
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height, _ = strconv.Atoi(c.Query("height"))
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maxHeight, _ = strconv.Atoi(c.Query("max_height"))
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maxWidth, _ = strconv.Atoi(c.Query("max_width"))
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extraParams = config.ExtraParams{
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Width: width,
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Height: height,
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@ -63,155 +48,65 @@ func Convert(c *fiber.Ctx) error {
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log.Debugf("Incoming connection from %s %s %s", c.IP(), reqHostname, reqURIwithQuery)
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var rawImageAbs string
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var metadata = config.MetaFile{}
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// 非图片清况下302到源文件
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if !helper.IsImageFile(filename) {
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log.Infof("Non-image file requested: %s", reqURI)
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var redirectURL string
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// 检查是否存在匹配的 IMG_MAP
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// 检查路径是否匹配 IMG_MAP 中的任何前缀
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var matchedPrefix string
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var matchedTarget string
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for prefix, target := range config.Config.ImageMap {
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if strings.HasPrefix(reqURI, prefix) {
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// 检查目标是否为远程资源
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if strings.HasPrefix(target, "http://") || strings.HasPrefix(target, "https://") {
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// 远程资源，构造重定向 URL
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redirectURL = target + strings.TrimPrefix(reqURI, prefix)
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} else {
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// 本地资源，按原逻辑处理
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return c.SendFile(path.Join(target, strings.TrimPrefix(reqURI, prefix)))
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}
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matchedPrefix = prefix
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matchedTarget = target
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break
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}
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}
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// 如果没有找到匹配的 IMG_MAP，或者是本地资源，使用默认的处理方式
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if redirectURL == "" {
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if proxyMode {
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redirectURL = realRemoteAddr
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} else {
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// 本地资源，按原逻辑处理
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localPath := path.Join(config.Config.ImgPath, reqURI)
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if helper.FileExists(localPath) {
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return c.SendFile(localPath)
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} else {
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// 如果不匹配任何 IMG_MAP 前缀，直接返回 404
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if matchedPrefix == "" {
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log.Warnf("请求的路径不匹配任何配置的 IMG_MAP: %s", c.Path())
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return c.SendStatus(fiber.StatusNotFound)
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}
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}
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}
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// 只有在确定需要重定向时才执行重定向
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if redirectURL != "" {
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log.Infof("Redirecting to: %s", redirectURL)
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return c.Redirect(redirectURL, fiber.StatusFound)
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}
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// 设置目标主机信息
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targetUrl, _ := url.Parse(matchedTarget)
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targetHostName = targetUrl.Host
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targetHost = targetUrl.Scheme + "://" + targetUrl.Host
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// 调整请求 URI
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reqURI = strings.Replace(reqURI, matchedPrefix, targetUrl.Path, 1)
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reqURIwithQuery = strings.Replace(reqURIwithQuery, matchedPrefix, targetUrl.Path, 1)
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// 构造远程地址
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realRemoteAddr = targetHost + reqURIwithQuery
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// 处理非图片文件
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if !helper.IsImageFile(filename) {
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log.Infof("Non-image file requested: %s", reqURI)
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log.Infof("Redirecting to: %s", realRemoteAddr)
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return c.Redirect(realRemoteAddr, fiber.StatusFound)
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}
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// 检查允许的文件类型
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if !helper.CheckAllowedType(filename) {
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msg := "不允许的文件扩展名 " + filename
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log.Warn(msg)
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c.Status(http.StatusBadRequest)
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_ = c.Send([]byte(msg))
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return nil
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return c.Status(http.StatusBadRequest).SendString(msg)
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}
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// Rewrite the target backend if a mapping rule matches the hostname
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if hostMap, hostMapFound := config.Config.ImageMap[reqHost]; hostMapFound {
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log.Debugf("找到host映射 %s -> %s", reqHostname, hostMap)
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targetHostUrl, _ := url.Parse(hostMap)
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targetHostName = targetHostUrl.Host
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targetHost = targetHostUrl.Scheme + "://" + targetHostUrl.Host
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proxyMode = true
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} else {
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// There's not matching host mapping, now check for any URI map that apply
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httpRegexpMatcher := regexp.MustCompile(config.HttpRegexp)
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for uriMap, uriMapTarget := range config.Config.ImageMap {
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if strings.HasPrefix(reqURI, uriMap) {
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log.Debugf("找到 URI 映射 %s -> %s", uriMap, uriMapTarget)
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mapMode = true
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// if uriMapTarget we use the proxy mode to fetch the remote
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if httpRegexpMatcher.Match([]byte(uriMapTarget)) {
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targetHostUrl, _ := url.Parse(uriMapTarget)
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targetHostName = targetHostUrl.Host
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targetHost = targetHostUrl.Scheme + "://" + targetHostUrl.Host
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reqURI = strings.Replace(reqURI, uriMap, targetHostUrl.Path, 1)
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reqURIwithQuery = strings.Replace(reqURIwithQuery, uriMap, targetHostUrl.Path, 1)
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proxyMode = true
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} else {
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reqURI = strings.Replace(reqURI, uriMap, uriMapTarget, 1)
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reqURIwithQuery = strings.Replace(reqURIwithQuery, uriMap, uriMapTarget, 1)
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}
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break
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}
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}
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}
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if proxyMode {
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if !mapMode {
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// Don't deal with the encoding to avoid upstream compatibilities
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reqURI = c.Path()
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reqURIwithQuery = c.OriginalURL()
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}
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log.Tracef("reqURIwithQuery is %s", reqURIwithQuery)
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// Replace host in the URL
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// realRemoteAddr = strings.Replace(reqURIwithQuery, reqHost, targetHost, 1)
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realRemoteAddr = targetHost + reqURIwithQuery
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log.Debugf("realRemoteAddr is %s", realRemoteAddr)
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}
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if proxyMode {
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// 这是 proxyMode，我们必须使用这个 url 来下载并将其保存到本地路径，这也为我们提供了 rawImageAbs
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// https://test.webp.sh/mypic/123.jpg?someother=200&somebugs=200
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metadata = fetchRemoteImg(realRemoteAddr, targetHostName)
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rawImageAbs = path.Join(config.Config.RemoteRawPath, targetHostName, metadata.Id)
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} else {
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// not proxyMode, we'll use local path
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metadata = helper.ReadMetadata(reqURIwithQuery, "", targetHostName)
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if !mapMode {
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// by default images are hosted in ImgPath
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rawImageAbs = path.Join(config.Config.ImgPath, reqURI)
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} else {
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rawImageAbs = reqURI
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}
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// detect if source file has changed
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if metadata.Checksum != helper.HashFile(rawImageAbs) {
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log.Info("源文件已更改，重新编码...")
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helper.WriteMetadata(reqURIwithQuery, "", targetHostName)
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cleanProxyCache(path.Join(config.Config.ExhaustPath, targetHostName, metadata.Id))
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}
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}
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// 获取远程图像元数据
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metadata := fetchRemoteImg(realRemoteAddr, targetHostName)
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rawImageAbs := path.Join(config.Config.RemoteRawPath, targetHostName, metadata.Id)
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// 后续的图像处理逻辑
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supportedFormats := helper.GuessSupportedFormat(reqHeader)
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// resize itself and return if only raw(original format) is supported
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if supportedFormats["raw"] == true &&
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supportedFormats["webp"] == false &&
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supportedFormats["avif"] == false &&
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supportedFormats["jxl"] == false {
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dest := path.Join(config.Config.ExhaustPath, targetHostName, metadata.Id)
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if !helper.ImageExists(dest) {
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encoder.ResizeItself(rawImageAbs, dest, extraParams)
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}
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return c.SendFile(dest)
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}
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// 检查原始图像是否存在,
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// 检查原始图像是否存在
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if !helper.ImageExists(rawImageAbs) {
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helper.DeleteMetadata(reqURIwithQuery, targetHostName)
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msg := "Image not found!"
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_ = c.Send([]byte(msg))
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log.Warn(msg)
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_ = c.SendStatus(404)
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return nil
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return c.Status(404).SendString(msg)
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}
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// 新增：检查文件大小
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// 检查文件大小
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isSmall, err := helper.IsFileSizeSmall(rawImageAbs, 100*1024) // 100KB
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if err != nil {
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log.Errorf("检查文件大小时出错: %v", err)
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@ -224,7 +119,7 @@ func Convert(c *fiber.Ctx) error {
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}
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avifAbs, webpAbs, jxlAbs := helper.GenOptimizedAbsPath(metadata, targetHostName)
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// Do the convertion based on supported formats and config
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// 根据支持的格式和配置进行转换
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encoder.ConvertFilter(rawImageAbs, jxlAbs, avifAbs, webpAbs, extraParams, supportedFormats, nil)
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var availableFiles = []string{rawImageAbs}
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