feat(lib/challenge): HTTP meta refresh challenge method (#623)

* feat(lib/challenge): HTTP meta refresh challenge method Closes #95 This challenge method enables users that don't (or won't) support JavaScript to pass Anubis challenges. It works by using HTML meta refresh directives to ensure that the client is a browser. This is OFF by default. In order to enable it, an administrator MUST choose to make the default challenge method `metarefresh`. TODO(Xe): - [ ] Documentation on this challenge method - [ ] Amend wording around Anubis being a proof of work proxy in the docs - [ ] Add configuration file syntax for the default challenge method and settings - [ ] Test with early customers Signed-off-by: Xe Iaso <me@xeiaso.net> * chore: spelling Signed-off-by: Xe Iaso <me@xeiaso.net> * fix(lib/challenge/metarefresh): use this value of err Signed-off-by: Xe Iaso <me@xeiaso.net> * docs: add metarefresh challenge info, Web AI Firewall Utility Signed-off-by: Xe Iaso <me@xeiaso.net> --------- Signed-off-by: Xe Iaso <me@xeiaso.net>
2025-06-06 21:18:55 -04:00 · 2025-06-06 21:18:55 -04:00 · 4ac59c3a79
commit 4ac59c3a79
parent bee1c22b96
11 changed files with 192 additions and 2 deletions
--- a/lib/challenge/metarefresh/metarefresh_templ.go
+++ b/lib/challenge/metarefresh/metarefresh_templ.go
@ -0,0 +1,85 @@
+// Code generated by templ - DO NOT EDIT.
+
+// templ: version: v0.3.887
+package metarefresh
+
+//lint:file-ignore SA4006 This context is only used if a nested component is present.
+
+import "github.com/a-h/templ"
+import templruntime "github.com/a-h/templ/runtime"
+
+import (
+	"fmt"
+
+	"github.com/TecharoHQ/anubis"
+)
+
+func page(challenge, redir string, difficulty int) templ.Component {
+	return templruntime.GeneratedTemplate(func(templ_7745c5c3_Input templruntime.GeneratedComponentInput) (templ_7745c5c3_Err error) {
+		templ_7745c5c3_W, ctx := templ_7745c5c3_Input.Writer, templ_7745c5c3_Input.Context
+		if templ_7745c5c3_CtxErr := ctx.Err(); templ_7745c5c3_CtxErr != nil {
+			return templ_7745c5c3_CtxErr
+		}
+		templ_7745c5c3_Buffer, templ_7745c5c3_IsBuffer := templruntime.GetBuffer(templ_7745c5c3_W)
+		if !templ_7745c5c3_IsBuffer {
+			defer func() {
+				templ_7745c5c3_BufErr := templruntime.ReleaseBuffer(templ_7745c5c3_Buffer)
+				if templ_7745c5c3_Err == nil {
+					templ_7745c5c3_Err = templ_7745c5c3_BufErr
+				}
+			}()
+		}
+		ctx = templ.InitializeContext(ctx)
+		templ_7745c5c3_Var1 := templ.GetChildren(ctx)
+		if templ_7745c5c3_Var1 == nil {
+			templ_7745c5c3_Var1 = templ.NopComponent
+		}
+		ctx = templ.ClearChildren(ctx)
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 1, "<div class=\"centered-div\"><img id=\"image\" style=\"width:100%;max-width:256px;\" src=\"")
+		if templ_7745c5c3_Err != nil {
+			return templ_7745c5c3_Err
+		}
+		var templ_7745c5c3_Var2 string
+		templ_7745c5c3_Var2, templ_7745c5c3_Err = templ.JoinStringErrs(anubis.BasePrefix + "/.within.website/x/cmd/anubis/static/img/pensive.webp?cacheBuster=" + anubis.Version)
+		if templ_7745c5c3_Err != nil {
+			return templ.Error{Err: templ_7745c5c3_Err, FileName: `metarefresh.templ`, Line: 11, Col: 165}
+		}
+		_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var2))
+		if templ_7745c5c3_Err != nil {
+			return templ_7745c5c3_Err
+		}
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 2, "\"> <img style=\"display:none;\" style=\"width:100%;max-width:256px;\" src=\"")
+		if templ_7745c5c3_Err != nil {
+			return templ_7745c5c3_Err
+		}
+		var templ_7745c5c3_Var3 string
+		templ_7745c5c3_Var3, templ_7745c5c3_Err = templ.JoinStringErrs(anubis.BasePrefix + "/.within.website/x/cmd/anubis/static/img/happy.webp?cacheBuster=" + anubis.Version)
+		if templ_7745c5c3_Err != nil {
+			return templ.Error{Err: templ_7745c5c3_Err, FileName: `metarefresh.templ`, Line: 12, Col: 174}
+		}
+		_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var3))
+		if templ_7745c5c3_Err != nil {
+			return templ_7745c5c3_Err
+		}
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 3, "\"><p id=\"status\">Loading...</p><p>Please wait a moment while we ensure the security of your connection.</p><meta http-equiv=\"refresh\" content=\"")
+		if templ_7745c5c3_Err != nil {
+			return templ_7745c5c3_Err
+		}
+		var templ_7745c5c3_Var4 string
+		templ_7745c5c3_Var4, templ_7745c5c3_Err = templ.JoinStringErrs(fmt.Sprintf("%d; url=%s", difficulty, redir))
+		if templ_7745c5c3_Err != nil {
+			return templ.Error{Err: templ_7745c5c3_Err, FileName: `metarefresh.templ`, Line: 15, Col: 83}
+		}
+		_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var4))
+		if templ_7745c5c3_Err != nil {
+			return templ_7745c5c3_Err
+		}
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 4, "\"></div>")
+		if templ_7745c5c3_Err != nil {
+			return templ_7745c5c3_Err
+		}
+		return nil
+	})
+}
+
+var _ = templruntime.GeneratedTemplate