When the name of maps.app.goo.gl or goo.gl could not be looked up for a
moment, the walk import said the short link leads somewhere other than
Google Maps. It now says the link could not be followed just now and answers
502, as for any other failure on the way; a name that leads into this
network is still refused.
A short link Google answers with 404 or 410 is one it does not know, and
asking again changes nothing. The dialog now says so in the reader's
language and asks to share the route from Google Maps again, with a 400 and
the reason short_link_unknown, instead of suggesting to try again later. A
busy or blocking answer from Google stays a failure that may pass.
The MCP tool preview_google_maps_walk is marked open world, since it follows
a short link to Google on every call, and the English text REST and MCP send
for each reason is held to the English text the planner shows.
"Add tour" in the planner now offers "Import walk from Google Maps". The
dialog takes the link of a route shared in Google Maps, either a
maps.app.goo.gl short link or the long google.com/maps/dir link, or the
share text of the Google Maps app with the one link in it. It shows the
stops in their order with their names, marks a stop the link gives no
position as such, says that the route comes from Google Maps with a link to
open it there, and that TREK plans the way between the stops itself and
does not take the line drawn in Google Maps over. Nothing is written until
"Load as walk": that opens a new, unsaved city walk in the planner with the
positioned stops and their names, routed on foot by TREK, and warns first
when it replaces unsaved work. A stop without a position is left out and
never looked up or guessed; with fewer than two positions nothing can be
loaded. While the walk is not saved, a calm notice in the planner says
where it came from, also after a reload of the draft. Cancelling or a
failure leaves every tour as it was.
Only a route the link marks unambiguously as on foot is read. A car, bike
or transit route, a link that does not say, or one that says two things is
refused with a reason the dialog gives in the reader's language. Each stop
takes its position from its own block of the link's data, so a line
dragged through extra points or a stop given as coordinates no longer
leaves the stops without positions or shifts them. The road trip and
places imports read links as before.
A short link is followed by a resolver of its own: every hop is checked
against the Google Maps short link shapes and the strict SSRF guard before
it is looked up or asked, so ALLOW_INTERNAL_NETWORK and
ALLOW_LINK_LOCAL_IPS do not open it. Each request goes to the vetted
addresses only, follows nothing by itself, reads no body and carries no
credentials; the chain has one deadline including name lookups, at most
three hops and a cap on the Location header, and the long link it ends on
must be Google Maps and is never fetched. The preview is POST
/api/trips/:tripId/tours/import/google-maps/preview for members who may
edit places, with a 502 when Google could not be reached, and the MCP tool
preview_google_maps_walk reads the same.
Maurice