fix(submit): use file path over stdin; fix CF CodeMirror textarea (#305)

## Problem

After the initial submit hardening, two issues remained: source code was
read in Lua and piped as stdin to the scraper (unnecessary roundtrip
since
the file exists on disk), and CF's `page.fill()` timed out on the hidden
`textarea[name="source"]` because CodeMirror owns the editor state.

## Solution

Pass the source file path as a CLI arg instead — AtCoder calls
`page.set_input_files(file_path)` directly, CF reads it with
`Path(file_path).read_text()`. Fix CF source injection via
`page.evaluate()`
into the CodeMirror instance. Extract `BROWSER_SUBMIT_NAV_TIMEOUT` as a
per-platform `defaultdict` (CF defaults to 2× nav timeout). Save the
buffer
with `vim.cmd.update()` before submitting.
This commit is contained in:
Barrett Ruth 2026-03-05 14:34:14 -05:00 committed by GitHub
parent 127089c57f
commit a202725cc5
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
28 changed files with 269 additions and 168 deletions

View file

@ -21,6 +21,7 @@ from .models import (
from .timeouts import (
BROWSER_NAV_TIMEOUT,
BROWSER_SESSION_TIMEOUT,
BROWSER_SUBMIT_NAV_TIMEOUT,
HTTP_TIMEOUT,
)
@ -289,7 +290,7 @@ class CodeforcesScraper(BaseScraper):
self,
contest_id: str,
problem_id: str,
source_code: str,
file_path: str,
language_id: str,
credentials: dict[str, str],
) -> SubmitResult:
@ -297,7 +298,7 @@ class CodeforcesScraper(BaseScraper):
_submit_headless,
contest_id,
problem_id,
source_code,
file_path,
language_id,
credentials,
)
@ -306,13 +307,15 @@ class CodeforcesScraper(BaseScraper):
def _submit_headless(
contest_id: str,
problem_id: str,
source_code: str,
file_path: str,
language_id: str,
credentials: dict[str, str],
_retried: bool = False,
) -> SubmitResult:
from pathlib import Path
source_code = Path(file_path).read_text()
try:
from scrapling.fetchers import StealthySession # type: ignore[import-untyped,unresolved-import]
except ImportError:
@ -379,12 +382,22 @@ def _submit_headless(
problem_id.upper(),
)
page.select_option('select[name="programTypeId"]', language_id)
page.fill('textarea[name="source"]', source_code)
page.evaluate(
"""(code) => {
const cm = document.querySelector('.CodeMirror');
if (cm && cm.CodeMirror) {
cm.CodeMirror.setValue(code);
}
const ta = document.querySelector('textarea[name="source"]');
if (ta) ta.value = code;
}""",
source_code,
)
page.locator("form.submit-form input.submit").click(no_wait_after=True)
try:
page.wait_for_url(
lambda url: "/my" in url or "/status" in url,
timeout=BROWSER_NAV_TIMEOUT * 2,
timeout=BROWSER_SUBMIT_NAV_TIMEOUT["codeforces"],
)
except Exception:
err_el = page.query_selector("span.error")
@ -441,7 +454,7 @@ def _submit_headless(
return _submit_headless(
contest_id,
problem_id,
source_code,
file_path,
language_id,
credentials,
_retried=True,