chmgen: Improve error message for links escaping site root

CyberShadow · CyberShadow · commit 473b249474f4 · 2018-02-18T12:56:22.000Z
diff --git a/chmgen.d b/chmgen.d
@@ -585,6 +585,9 @@ string absoluteUrl(string base, string url)
     while (urlSegments.startsWith([`..`]))
     {
         urlSegments = urlSegments[1..$];
+        enforce(pathSegments.length,
+            "Attempting to escape site root (dereferencing %s from %s)"
+            .format(url, base));
         pathSegments = pathSegments[0..$-1];
     }
     return (pathSegments ~ urlSegments).join(`/`);

Original file line number	Diff line number	Diff line change
`@@ -585,6 +585,9 @@ string absoluteUrl(string base, string url)`
`585`	`585`	while (urlSegments.startsWith([`..`]))
`586`	`586`	`{`
`587`	`587`	`urlSegments = urlSegments[1..$];`
	`588`	`+ enforce(pathSegments.length,`
	`589`	`+ "Attempting to escape site root (dereferencing %s from %s)"`
	`590`	`+ .format(url, base));`
`588`	`591`	`pathSegments = pathSegments[0..$-1];`
`589`	`592`	`}`
`590`	`593`	return (pathSegments ~ urlSegments).join(`/`);