#!/usr/bin/env bash
# CWE-407 scan — NetworkX (Python graph library)
# Network mode: semitrusted
set -euo pipefail
echo "# scan=networkx host=$(hostname) date=$(date -u +%Y-%m-%dT%H:%M:%SZ)"

cd /tmp && git clone --depth 1 https://github.com/networkx/networkx networkx 2>&1 | tail -1

GRAPH_KW="tarjan|strongly.connected|dfs\b|scc\b|topolog|cycle|reachab|postorder|dominator|digraph|shortest.path"
PY_MEM="[^a-z]in (path|stack|visited|seen|queue|ancestors)\b|not in (path|stack|visited)\b|path\.index\b|stack\.index\b"

echo "# roots: /tmp/networkx/networkx/algorithms"
find /tmp/networkx/networkx/algorithms -name "*.py" | sort | while IFS= read -r f; do
  gl=$(grep -inE "$GRAPH_KW" "$f" 2>/dev/null | cut -d: -f1 | head -5 || true)
  [ -z "$gl" ] && continue
  while IFS= read -r ln; do
    s=$(( ln > 20 ? ln - 20 : 1 )); e=$(( ln + 20 ))
    hit=$(sed -n "${s},${e}p" "$f" 2>/dev/null | grep -iE "$PY_MEM" | head -1 | sed 's/^\s*//' || true)
    [ -n "$hit" ] && echo "CANDIDATE	${f}:${ln}	${hit}"
  done <<< "$gl"
done
echo "# scan complete"