overleaf/services/web/bin/lint_flag_res_send_usage

#!/bin/bash

set -e

POTENTIAL_SEND_USAGE=$(\
  grep \
    --files-with-matches \
    --recursive \
      app.mjs \
      app/ \
      modules/*/app \
      test/acceptance/ \
      modules/*/test/acceptance/ \
    --regex "\.send\b" \
    --regex "\bsend(" \
)
HELPER_MODULE="app/src/infrastructure/Response.js"
if [[ "$POTENTIAL_SEND_USAGE" == "$HELPER_MODULE" ]]; then
  exit 0
fi

for file in ${POTENTIAL_SEND_USAGE}; do
  if [[ "$file" == "$HELPER_MODULE" ]]; then
    continue
  fi

  cat <<MSG >&2

ERROR: $file contains a potential use of 'res.send'.

---
$(grep -n -C 3  "$file" --regex "\.send\b" --regex "\bsend(")
---

Using 'res.send' is prone to introducing XSS vulnerabilities.

Consider using 'res.json' or one of the helpers in $HELPER_MODULE.

If this is a false-positive, consider using a more specific name than 'send'
 for your newly introduced function.

Links:
 - https://github.com/overleaf/internal/issues/6268

MSG
  exit 1
done