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87ed0b2bb9
* chore: fix non-constant fmt string in call Signed-off-by: Dwi Siswanto <git@dw1.io> * build: bump all direct modules Signed-off-by: Dwi Siswanto <git@dw1.io> * chore(hosterrorscache): update import path Signed-off-by: Dwi Siswanto <git@dw1.io> * fix(charts): break changes Signed-off-by: Dwi Siswanto <git@dw1.io> * build: pinned `github.com/zmap/zcrypto` to v0.0.0-20240512203510-0fef58d9a9db Signed-off-by: Dwi Siswanto <git@dw1.io> * chore: golangci-lint auto fixes Signed-off-by: Dwi Siswanto <git@dw1.io> * chore: satisfy lints Signed-off-by: Dwi Siswanto <git@dw1.io> * build: migrate `github.com/xanzy/go-gitlab` => `gitlab.com/gitlab-org/api/client-go` Signed-off-by: Dwi Siswanto <git@dw1.io> * feat(json): update build constraints Signed-off-by: Dwi Siswanto <git@dw1.io> * chore: dont panicking on close err Signed-off-by: Dwi Siswanto <git@dw1.io> --------- Signed-off-by: Dwi Siswanto <git@dw1.io>
227 lines
6.7 KiB
Go
227 lines
6.7 KiB
Go
// This package provides a mock server for testing fuzzing templates
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package fuzzplayground
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import (
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"encoding/xml"
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"fmt"
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"io"
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"net/http"
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"net/url"
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"os/exec"
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"strconv"
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"strings"
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"github.com/labstack/echo/v4"
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"github.com/labstack/echo/v4/middleware"
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"github.com/projectdiscovery/retryablehttp-go"
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)
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func GetPlaygroundServer() *echo.Echo {
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e := echo.New()
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e.Use(middleware.Recover())
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e.Use(middleware.Logger())
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e.GET("/", indexHandler)
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e.GET("/info", infoHandler)
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e.GET("/redirect", redirectHandler)
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e.GET("/request", requestHandler)
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e.GET("/email", emailHandler)
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e.GET("/permissions", permissionsHandler)
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e.GET("/blog/post", numIdorHandler) // for num based idors like ?id=44
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e.POST("/reset-password", resetPasswordHandler)
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e.GET("/host-header-lab", hostHeaderLabHandler)
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e.GET("/user/:id/profile", userProfileHandler)
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e.POST("/user", patchUnsanitizedUserHandler)
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e.GET("/blog/posts", getPostsHandler)
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return e
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}
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var bodyTemplate = `<html>
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<head>
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<title>Fuzz Playground</title>
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</head>
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<body>
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%s
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</body>
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</html>`
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func indexHandler(ctx echo.Context) error {
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return ctx.HTML(200, fmt.Sprintf(bodyTemplate, `<h1>Fuzzing Playground</h1><hr>
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<ul>
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<li><a href="/info?name=test&another=value&random=data">Info Page XSS</a></li>
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<li><a href="/redirect?redirect_url=/info?name=redirected_from_url">Redirect Page OpenRedirect</a></li>
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<li><a href="/request?url=https://example.com">Request Page SSRF</a></li>
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<li><a href="/email?text=important_user">Email Page SSTI</a></li>
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<li><a href="/permissions?cmd=whoami">Permissions Page CMDI</a></li>
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<li><a href="/host-header-lab">Host Header Lab (X-Forwarded-Host Trusted)</a></li>
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<li><a href="/user/75/profile">User Profile Page SQLI (path parameter)</a></li>
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<li><a href="/user">POST on /user SQLI (body parameter)</a></li>
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<li><a href="/blog/posts">SQLI in cookie lang parameter value (eg. lang=en)</a></li>
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</ul>
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`))
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}
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func infoHandler(ctx echo.Context) error {
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return ctx.HTML(200, fmt.Sprintf(bodyTemplate, fmt.Sprintf("Name of user: %s%s%s", ctx.QueryParam("name"), ctx.QueryParam("another"), ctx.QueryParam("random"))))
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}
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func redirectHandler(ctx echo.Context) error {
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url := ctx.QueryParam("redirect_url")
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return ctx.Redirect(302, url)
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}
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func requestHandler(ctx echo.Context) error {
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url := ctx.QueryParam("url")
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data, err := retryablehttp.DefaultClient().Get(url)
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if err != nil {
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return ctx.HTML(500, err.Error())
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}
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defer func() {
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_ = data.Body.Close()
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}()
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body, _ := io.ReadAll(data.Body)
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return ctx.HTML(200, fmt.Sprintf(bodyTemplate, string(body)))
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}
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func emailHandler(ctx echo.Context) error {
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text := ctx.QueryParam("text")
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if strings.Contains(text, "{{") {
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trimmed := strings.SplitN(strings.Trim(text[strings.Index(text, "{"):], "{}"), "*", 2)
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if len(trimmed) < 2 {
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return ctx.HTML(500, "invalid template")
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}
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first, _ := strconv.Atoi(trimmed[0])
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second, _ := strconv.Atoi(trimmed[1])
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text = strconv.Itoa(first * second)
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}
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return ctx.HTML(200, fmt.Sprintf(bodyTemplate, fmt.Sprintf("Text: %s", text)))
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}
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func permissionsHandler(ctx echo.Context) error {
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command := ctx.QueryParam("cmd")
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fields := strings.Fields(command)
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cmd := exec.Command(fields[0], fields[1:]...)
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data, _ := cmd.CombinedOutput()
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return ctx.HTML(200, fmt.Sprintf(bodyTemplate, string(data)))
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}
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func numIdorHandler(ctx echo.Context) error {
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// validate if any numerical query param is present
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// if not, return 400 if so, return 200
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for k := range ctx.QueryParams() {
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if _, err := strconv.Atoi(ctx.QueryParam(k)); err == nil {
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return ctx.JSON(200, "Profile Info for user with id "+ctx.QueryParam(k))
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}
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}
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return ctx.JSON(400, "No numerical query param found")
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}
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func patchUnsanitizedUserHandler(ctx echo.Context) error {
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var user User
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contentType := ctx.Request().Header.Get("Content-Type")
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// manually handle unmarshalling data
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if strings.Contains(contentType, "application/json") {
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err := ctx.Bind(&user)
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if err != nil {
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return ctx.JSON(500, "Invalid JSON data")
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}
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} else if strings.Contains(contentType, "application/x-www-form-urlencoded") {
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user.Name = ctx.FormValue("name")
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user.Age, _ = strconv.Atoi(ctx.FormValue("age"))
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user.Role = ctx.FormValue("role")
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user.ID, _ = strconv.Atoi(ctx.FormValue("id"))
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} else if strings.Contains(contentType, "application/xml") {
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bin, _ := io.ReadAll(ctx.Request().Body)
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err := xml.Unmarshal(bin, &user)
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if err != nil {
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return ctx.JSON(500, "Invalid XML data")
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}
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} else if strings.Contains(contentType, "multipart/form-data") {
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user.Name = ctx.FormValue("name")
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user.Age, _ = strconv.Atoi(ctx.FormValue("age"))
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user.Role = ctx.FormValue("role")
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user.ID, _ = strconv.Atoi(ctx.FormValue("id"))
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} else {
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return ctx.JSON(500, "Invalid Content-Type")
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}
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err := patchUnsanitizedUser(db, user)
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if err != nil {
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return ctx.JSON(500, err.Error())
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}
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return ctx.JSON(200, "User updated successfully")
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}
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// resetPassword mock
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func resetPasswordHandler(c echo.Context) error {
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var m map[string]interface{}
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if err := c.Bind(&m); err != nil {
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return c.JSON(500, "Something went wrong")
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}
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host := c.Request().Header.Get("X-Forwarded-For")
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if host == "" {
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return c.JSON(500, "Something went wrong")
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}
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resp, err := http.Get("http://internal." + host + "/update?user=1337&pass=" + m["password"].(string))
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if err != nil {
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return c.JSON(500, "Something went wrong")
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}
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defer func() {
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_ = resp.Body.Close()
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}()
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return c.JSON(200, "Password reset successfully")
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}
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func hostHeaderLabHandler(c echo.Context) error {
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// vulnerable app has custom routing and trusts x-forwarded-host
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// to route to internal services
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if c.Request().Header.Get("X-Forwarded-Host") != "" {
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resp, err := http.Get("http://" + c.Request().Header.Get("X-Forwarded-Host"))
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if err != nil {
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return c.JSON(500, "Something went wrong")
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}
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defer func() {
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_ = resp.Body.Close()
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}()
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c.Response().Header().Set("Content-Type", resp.Header.Get("Content-Type"))
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c.Response().WriteHeader(resp.StatusCode)
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_, err = io.Copy(c.Response().Writer, resp.Body)
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if err != nil {
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return c.JSON(500, "Something went wrong")
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}
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}
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return c.JSON(200, "Not a Teapot")
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}
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func userProfileHandler(ctx echo.Context) error {
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val, _ := url.PathUnescape(ctx.Param("id"))
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fmt.Printf("Unescaped: %s\n", val)
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user, err := getUnsanitizedUser(db, val)
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if err != nil {
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return ctx.JSON(500, err.Error())
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}
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return ctx.JSON(200, user)
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}
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func getPostsHandler(c echo.Context) error {
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lang, err := c.Cookie("lang")
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if err != nil {
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// If the language cookie is missing, default to English
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lang = new(http.Cookie)
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lang.Value = "en"
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}
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posts, err := getUnsanitizedPostsByLang(db, lang.Value)
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if err != nil {
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return c.JSON(http.StatusInternalServerError, err.Error())
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}
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return c.JSON(http.StatusOK, posts)
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}
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