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Add escape logic for header #3500

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merged 1 commit into from Feb 17, 2023
Merged

Add escape logic for header #3500

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4 changes: 4 additions & 0 deletions gin.go
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Expand Up @@ -9,6 +9,7 @@ import (
"html/template"
"net"
"net/http"
"net/url"
"os"
"path"
"strings"
Expand Down Expand Up @@ -668,6 +669,9 @@ func redirectTrailingSlash(c *Context) {
req := c.Request
p := req.URL.Path
if prefix := path.Clean(c.Request.Header.Get("X-Forwarded-Prefix")); prefix != "." {
prefix = url.QueryEscape(prefix)
prefix = strings.ReplaceAll(prefix, "%2F", "/")

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please add some unit test cases, thanks!

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Hi, @thinkerou
Thank you for your review!

I update "routes_test.go", Plz check again : )

p = prefix + "/" + req.URL.Path
}
req.URL.Path = p + "/"
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12 changes: 12 additions & 0 deletions routes_test.go
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Expand Up @@ -185,6 +185,18 @@ func TestRouteRedirectTrailingSlash(t *testing.T) {
w = PerformRequest(router, http.MethodGet, "/path2/", header{Key: "X-Forwarded-Prefix", Value: "/api/"})
assert.Equal(t, 200, w.Code)

w = PerformRequest(router, http.MethodGet, "/path/", header{Key: "X-Forwarded-Prefix", Value: "../../bug#?"})
assert.Equal(t, "../../../bug%2523%253F/path", w.Header().Get("Location"))
assert.Equal(t, 301, w.Code)

w = PerformRequest(router, http.MethodGet, "/path/", header{Key: "X-Forwarded-Prefix", Value: "https://gin-gonic.com/#"})
assert.Equal(t, "https%3A/gin-gonic.com/%23/https%253A/gin-gonic.com/%2523/path", w.Header().Get("Location"))
assert.Equal(t, 301, w.Code)

w = PerformRequest(router, http.MethodGet, "/path/", header{Key: "X-Forwarded-Prefix", Value: "#bug"})
assert.Equal(t, "%23bug/%2523bug/path", w.Header().Get("Location"))
assert.Equal(t, 301, w.Code)

router.RedirectTrailingSlash = false

w = PerformRequest(router, http.MethodGet, "/path/")
Expand Down