Skip to content

Improve port parsing patterns to prevent FlowStorm false positives #113

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 2 commits into from
Oct 5, 2025
Merged

Improve port parsing patterns to prevent FlowStorm false positives #113

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
b6ab25e
Improve port parsing patterns with case insensitivity and bounded whi…
Oct 5, 2025
90ea4a1
Add word boundary before 'port' pattern for maximum strictness
Oct 5, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
9 changes: 4 additions & 5 deletions src/clojure_mcp/nrepl_launcher.clj
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -15,11 +15,10 @@
Returns the port number as an integer or nil if not found."
[output]
(when output
(let [patterns [#"(?i)nrepl.*?port[^\d]*(\d+)" ; nREPL server started on port 12345
#"(?i)port[^\d]*(\d+)" ; port 12345, port: 12345
#":(\d{4,5})\b" ; :12345 (4-5 digit ports)
#"Started.*?(\d{4,5})\b" ; Started on 12345
#"Listening.*?(\d{4,5})\b"] ; Listening on 12345
(let [patterns [#"(?i)\bport\s{1,10}(\d{4,5})\b" ; port 12345
#":\s?(\d{4,5})\b" ; :12345 or : 12345 (4-5 digit ports)
#"(?i)Started on\s{1,10}(\d{4,5})\b" ; Started on 12345
#"(?i)Listening on\s{1,10}(\d{4,5})\b"] ; Listening on 12345
line (str/trim output)]
(some (fn [pattern]
(when-let [match (re-find pattern line)]
Expand Down
4 changes: 3 additions & 1 deletion test/clojure_mcp/nrepl_launcher_test.clj
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -26,7 +26,9 @@
"port abc" ; non-numeric
"port 123" ; too small (below 1024)
"port 999999" ; too large (above 65535)
"random text"))
"random text"
;; FlowStorm output should not match (issue #109)
"flow_storm.jobs$run_jobs$mem_reporter__4628@348137e8 function scheduled every 1000 millis"))

(testing "handles case insensitive matching"
(are [output expected] (= expected (launcher/parse-port-from-output output))
Expand Down