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zisisvakras
37f830daa7
RFC 8620 does not require Session object URLs to be absolute, but
rewriteSessionUrl() called new URL(url) with no base, which throws on a
relative apiUrl or downloadUrl. The throw was silently caught and the
raw relative string returned, so requests resolved against the app's
own origin instead of the JMAP server.
Resolving with the URL parser and reading back href or pathname is not
an option: downloadUrl, uploadUrl and eventSourceUrl are RFC 6570
level 1 URI Templates (RFC 8620 section 2) whose literal {accountId},
{blobId}, {name} and {type} placeholders would be percent-encoded to
%7B/%7D, silently defeating the string replace() expansion at every
call site. Instead, anchor the path, query and fragment of the original
string at the server origin, which also covers network-path references
(//host/path) and does not fold a path prefix on the configured server
URL into relative resolution.
An empty URL is returned untouched: rewriting it into the bare server
origin would make it truthy and defeat the "not available" guards on
apiUrl and downloadUrl downstream.