fix memory remove dup

Signed-off-by: ale <ale@manalejandro.com>

app/api/search/route.ts

@@ -11,13 +11,101 @@ interface HashDocument {
   created_at?: string;
 }
 
+// Maximum allowed query length
+const MAX_QUERY_LENGTH = 1000;
+
+// Characters that could be used in NoSQL/Elasticsearch injection attacks
+const DANGEROUS_PATTERNS = [
+  /[{}\[\]]/g,           // JSON structure characters
+  /\$[a-zA-Z]/g,         // MongoDB-style operators
+  /\\u[0-9a-fA-F]{4}/g,  // Unicode escapes
+  /<script/gi,           // XSS attempts
+  /javascript:/gi,       // XSS attempts
+];
+
+/**
+ * Sanitize input to prevent NoSQL injection attacks
+ * For hash lookups, we only need alphanumeric characters and $
+ * For plaintext, we allow more characters but sanitize dangerous patterns
+ */
+function sanitizeInput(input: string): string {
+  // Trim and take first word only
+  let sanitized = input.trim().split(/\s+/)[0] || '';
+  
+  // Limit length
+  if (sanitized.length > MAX_QUERY_LENGTH) {
+    sanitized = sanitized.substring(0, MAX_QUERY_LENGTH);
+  }
+  
+  // Remove null bytes
+  sanitized = sanitized.replace(/\0/g, '');
+  
+  // Check for dangerous patterns
+  for (const pattern of DANGEROUS_PATTERNS) {
+    sanitized = sanitized.replace(pattern, '');
+  }
+  
+  return sanitized;
+}
+
+/**
+ * Validate that the input is safe for use in Elasticsearch queries
+ */
+function isValidInput(input: string): boolean {
+  // Check for empty input
+  if (!input || input.length === 0) {
+    return false;
+  }
+  
+  // Check for excessively long input
+  if (input.length > MAX_QUERY_LENGTH) {
+    return false;
+  }
+  
+  // Check for control characters (except normal whitespace)
+  if (/[\x00-\x08\x0B\x0C\x0E-\x1F\x7F]/.test(input)) {
+    return false;
+  }
+  
+  return true;
+}
+
 export async function POST(request: NextRequest) {
   try {
-    const { query } = await request.json();
+    const body = await request.json();
     
+    // Validate request body structure
+    if (!body || typeof body !== 'object') {
+      return NextResponse.json(
+        { error: 'Invalid request body' },
+        { status: 400 }
+      );
+    }
+
+    const { query } = body;
+
+    // Validate query type
     if (!query || typeof query !== 'string') {
       return NextResponse.json(
-        { error: 'Query parameter is required' },
+        { error: 'Query parameter is required and must be a string' },
+        { status: 400 }
+      );
+    }
+
+    // Validate input before processing
+    if (!isValidInput(query)) {
+      return NextResponse.json(
+        { error: 'Invalid query: contains forbidden characters or is too long' },
+        { status: 400 }
+      );
+    }
+
+    // Sanitize input
+    const cleanQuery = sanitizeInput(query);
+    
+    if (!cleanQuery) {
+      return NextResponse.json(
+        { error: 'Invalid query: only whitespace or invalid characters provided' },
         { status: 400 }
       );
     }
@@ -25,15 +113,6 @@ export async function POST(request: NextRequest) {
     // Ensure index exists
     await initializeIndex();
 
-    const cleanQuery = query.trim().split(/\s+/)[0];
-    
-    if (!cleanQuery) {
-      return NextResponse.json(
-        { error: 'Invalid query: only whitespace provided' },
-        { status: 400 }
-      );
-    }
-
     const cleanQueryLower = cleanQuery.toLowerCase();
     const hashType = detectHashType(cleanQueryLower);
 

app/page.tsx

@@ -1,7 +1,8 @@
 'use client';
 
-import { useState, useEffect } from 'react';
-import { Search, Copy, Check, Hash, Key, AlertCircle, Loader2, Database } from 'lucide-react';
+import { useState, useEffect, useCallback, Suspense } from 'react';
+import { useSearchParams } from 'next/navigation';
+import { Search, Copy, Check, Hash, Key, AlertCircle, Loader2, Database, Link } from 'lucide-react';
 
 interface SearchResult {
   found: boolean;
@@ -45,13 +46,62 @@ function formatNumber(num: number): string {
   return num.toLocaleString();
 }
 
-export default function Home() {
+function HasherContent() {
+  const searchParams = useSearchParams();
   const [query, setQuery] = useState('');
   const [result, setResult] = useState<SearchResult | null>(null);
   const [loading, setLoading] = useState(false);
   const [error, setError] = useState('');
   const [copiedField, setCopiedField] = useState<string | null>(null);
   const [stats, setStats] = useState<IndexStats | null>(null);
+  const [copiedLink, setCopiedLink] = useState(false);
+  const [initialLoadDone, setInitialLoadDone] = useState(false);
+
+  const performSearch = useCallback(async (searchQuery: string, updateUrl: boolean = true) => {
+    if (!searchQuery.trim()) return;
+
+    setLoading(true);
+    setError('');
+    setResult(null);
+
+    try {
+      const response = await fetch('/api/search', {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({ query: searchQuery.trim() })
+      });
+
+      if (!response.ok) {
+        throw new Error('Search failed');
+      }
+
+      const data = await response.json();
+      setResult(data);
+      
+      // Update URL with search query (using history API to avoid re-triggering effects)
+      if (updateUrl) {
+        const newUrl = new URL(window.location.href);
+        newUrl.searchParams.set('q', searchQuery.trim());
+        window.history.replaceState(null, '', newUrl.pathname + newUrl.search);
+      }
+    } catch (_err) {
+      setError('Failed to perform search. Please check your connection.');
+    } finally {
+      setLoading(false);
+    }
+  }, []);
+
+  // Load query from URL on mount (only once)
+  useEffect(() => {
+    if (initialLoadDone) return;
+    
+    const urlQuery = searchParams.get('q');
+    if (urlQuery) {
+      setQuery(urlQuery);
+      performSearch(urlQuery, false);
+    }
+    setInitialLoadDone(true);
+  }, [searchParams, performSearch, initialLoadDone]);
 
   useEffect(() => {
     const fetchStats = async () => {
@@ -73,30 +123,7 @@ export default function Home() {
 
   const handleSearch = async (e: React.FormEvent) => {
     e.preventDefault();
-    if (!query.trim()) return;
-
-    setLoading(true);
-    setError('');
-    setResult(null);
-
-    try {
-      const response = await fetch('/api/search', {
-        method: 'POST',
-        headers: { 'Content-Type': 'application/json' },
-        body: JSON.stringify({ query: query.trim() })
-      });
-
-      if (!response.ok) {
-        throw new Error('Search failed');
-      }
-
-      const data = await response.json();
-      setResult(data);
-    } catch (_err) {
-      setError('Failed to perform search. Please check your connection.');
-    } finally {
-      setLoading(false);
-    }
+    performSearch(query);
   };
 
   const copyToClipboard = (text: string, field: string) => {
@@ -105,6 +132,14 @@ export default function Home() {
     setTimeout(() => setCopiedField(null), 2000);
   };
 
+  const copyShareLink = () => {
+    const url = new URL(window.location.href);
+    url.searchParams.set('q', query.trim());
+    navigator.clipboard.writeText(url.toString());
+    setCopiedLink(true);
+    setTimeout(() => setCopiedLink(false), 2000);
+  };
+
   const HashDisplay = ({ label, value, field }: { label: string; value: string; field: string }) => (
     <div className="bg-gray-50 rounded-lg p-4 border border-gray-200">
       <div className="flex items-center justify-between mb-2">
@@ -166,12 +201,27 @@ export default function Home() {
               value={query}
               onChange={(e) => setQuery(e.target.value)}
               placeholder="Enter a hash or plaintext..."
-              className="w-full px-6 py-4 pr-14 text-lg rounded-2xl border-2 border-gray-200 focus:border-blue-500 focus:ring-4 focus:ring-blue-100 outline-none transition-all shadow-sm"
+              className="w-full px-6 py-4 pr-28 text-lg rounded-2xl border-2 border-gray-200 focus:border-blue-500 focus:ring-4 focus:ring-blue-100 outline-none transition-all shadow-sm"
             />
+            <div className="absolute right-2 top-1/2 -translate-y-1/2 flex gap-1">
+              {query.trim() && (
+                <button
+                  type="button"
+                  onClick={copyShareLink}
+                  className="bg-gray-100 text-gray-600 p-3 rounded-xl hover:bg-gray-200 transition-all"
+                  title="Copy share link"
+                >
+                  {copiedLink ? (
+                    <Check className="w-6 h-6 text-green-600" />
+                  ) : (
+                    <Link className="w-6 h-6" />
+                  )}
+                </button>
+              )}
               <button
                 type="submit"
                 disabled={loading || !query.trim()}
-              className="absolute right-2 top-1/2 -translate-y-1/2 bg-gradient-to-r from-blue-600 to-purple-600 text-white p-3 rounded-xl hover:shadow-lg disabled:opacity-50 disabled:cursor-not-allowed transition-all"
+                className="bg-gradient-to-r from-blue-600 to-purple-600 text-white p-3 rounded-xl hover:shadow-lg disabled:opacity-50 disabled:cursor-not-allowed transition-all"
               >
                 {loading ? (
                   <Loader2 className="w-6 h-6 animate-spin" />
@@ -180,6 +230,7 @@ export default function Home() {
                 )}
               </button>
             </div>
+          </div>
         </form>
 
         {/* Error Message */}
@@ -315,3 +366,19 @@ export default function Home() {
   );
 }
 
+function LoadingFallback() {
+  return (
+    <div className="min-h-screen bg-gradient-to-br from-blue-50 via-white to-purple-50 flex items-center justify-center">
+      <Loader2 className="w-12 h-12 text-blue-600 animate-spin" />
+    </div>
+  );
+}
+
+export default function Home() {
+  return (
+    <Suspense fallback={<LoadingFallback />}>
+      <HasherContent />
+    </Suspense>
+  );
+}
+

scripts/remove-duplicates.ts

@@ -225,38 +225,41 @@ async function findDuplicatesForField(
   return duplicates;
 }
 
-async function removeDuplicates(parsedArgs: ParsedArgs) {
-  const client = new Client({ node: ELASTICSEARCH_NODE });
-  const fields = parsedArgs.field 
-    ? [parsedArgs.field] 
-    : ['plaintext', 'md5', 'sha1', 'sha256', 'sha512'];
-
-  console.log(`🔍 Hasher Duplicate Remover`);
+/**
+ * Phase 1: Initialize and connect to Elasticsearch
+ */
+async function phase1_InitAndConnect() {
+  console.log(`🔍 Hasher Duplicate Remover - Phase 1: Initialization`);
   console.log(`━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━`);
   console.log(`Elasticsearch: ${ELASTICSEARCH_NODE}`);
   console.log(`Index: ${INDEX_NAME}`);
-  console.log(`Mode: ${parsedArgs.dryRun ? '🔎 DRY RUN (no changes)' : '⚠️  EXECUTE (will delete)'}`);
-  console.log(`Batch size: ${parsedArgs.batchSize}`);
-  console.log(`Fields to check: ${fields.join(', ')}`);
   console.log('');
 
-  try {
-    // Test connection
+  const client = new Client({ node: ELASTICSEARCH_NODE });
+
   console.log('🔗 Connecting to Elasticsearch...');
   await client.cluster.health({});
   console.log('✅ Connected successfully\n');
 
-    // Get index stats
   const countResponse = await client.count({ index: INDEX_NAME });
   console.log(`📊 Total documents in index: ${countResponse.count}\n`);
 
-    const allDuplicates: DuplicateGroup[] = [];
-    const seenDeleteIds = new Set<string>();
+  return { client, totalDocuments: countResponse.count };
+}
 
-    // Find duplicates for each field
-    for (const field of fields) {
-      console.log(`🔍 Checking duplicates for field: ${field}...`);
-      const fieldDuplicates = await findDuplicatesForField(client, field, parsedArgs.batchSize);
+/**
+ * Phase 2: Find duplicates for a specific field
+ */
+async function phase2_FindDuplicatesForField(
+  client: Client,
+  field: string,
+  batchSize: number,
+  seenDeleteIds: Set<string>
+): Promise<{ duplicates: DuplicateGroup[], totalFound: number }> {
+  console.log(`\n🔍 Phase 2: Checking duplicates for field: ${field}...`);
+  
+  const fieldDuplicates = await findDuplicatesForField(client, field, batchSize);
+  const duplicates: DuplicateGroup[] = [];
   
   // Filter out already seen delete IDs to avoid counting the same document multiple times
   for (const dup of fieldDuplicates) {
@@ -264,11 +267,124 @@ async function removeDuplicates(parsedArgs: ParsedArgs) {
     if (newDeleteIds.length > 0) {
       dup.deleteIds = newDeleteIds;
       newDeleteIds.forEach(id => seenDeleteIds.add(id));
-          allDuplicates.push(dup);
+      duplicates.push(dup);
     }
   }
   
   console.log(`   Found ${fieldDuplicates.length} duplicate groups for ${field}`);
+  console.log(`   New unique documents to delete: ${duplicates.reduce((sum, dup) => sum + dup.deleteIds.length, 0)}`);
+  
+  // Force garbage collection if available
+  if (global.gc) {
+    global.gc();
+    console.log(`   ♻️  Memory freed after processing ${field}`);
+  }
+  
+  return { duplicates, totalFound: fieldDuplicates.length };
+}
+
+/**
+ * Phase 3: Process deletion for a batch of duplicates
+ */
+async function phase3_DeleteBatch(
+  client: Client,
+  deleteIds: string[],
+  batchSize: number,
+  startIndex: number
+): Promise<{ deleted: number, errors: number }> {
+  const batch = deleteIds.slice(startIndex, startIndex + batchSize);
+  let deleted = 0;
+  let errors = 0;
+
+  try {
+    const bulkOperations = batch.flatMap(id => [
+      { delete: { _index: INDEX_NAME, _id: id } }
+    ]);
+
+    const bulkResponse = await client.bulk({
+      operations: bulkOperations,
+      refresh: false
+    });
+
+    if (bulkResponse.errors) {
+      const errorCount = bulkResponse.items.filter((item: any) => item.delete?.error).length;
+      errors += errorCount;
+      deleted += batch.length - errorCount;
+    } else {
+      deleted += batch.length;
+    }
+  } catch (error) {
+    console.error(`\n❌ Error deleting batch:`, error);
+    errors += batch.length;
+  }
+
+  // Force garbage collection if available
+  if (global.gc) {
+    global.gc();
+  }
+
+  return { deleted, errors };
+}
+
+/**
+ * Phase 4: Finalize and report results
+ */
+async function phase4_Finalize(
+  client: Client,
+  totalDeleted: number,
+  totalErrors: number,
+  initialDocumentCount: number
+) {
+  console.log('\n\n🔄 Phase 4: Refreshing index...');
+  await client.indices.refresh({ index: INDEX_NAME });
+
+  const newCountResponse = await client.count({ index: INDEX_NAME });
+
+  console.log('\n━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━');
+  console.log('✅ Duplicate removal complete!');
+  console.log(`━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━`);
+  console.log(`Documents deleted: ${totalDeleted}`);
+  console.log(`Errors: ${totalErrors}`);
+  console.log(`Previous document count: ${initialDocumentCount}`);
+  console.log(`New document count: ${newCountResponse.count}`);
+  console.log('');
+}
+
+async function removeDuplicates(parsedArgs: ParsedArgs) {
+  const fields = parsedArgs.field 
+    ? [parsedArgs.field] 
+    : ['plaintext', 'md5', 'sha1', 'sha256', 'sha512'];
+
+  console.log(`Mode: ${parsedArgs.dryRun ? '🔎 DRY RUN (no changes)' : '⚠️  EXECUTE (will delete)'}`);
+  console.log(`Batch size: ${parsedArgs.batchSize}`);
+  console.log(`Fields to check: ${fields.join(', ')}`);
+  console.log('');
+
+  try {
+    // === PHASE 1: Initialize ===
+    const { client, totalDocuments } = await phase1_InitAndConnect();
+    
+    // Force garbage collection after phase 1
+    if (global.gc) {
+      global.gc();
+      console.log('♻️  Memory freed after initialization\n');
+    }
+
+    // === PHASE 2: Find duplicates field by field ===
+    const allDuplicates: DuplicateGroup[] = [];
+    const seenDeleteIds = new Set<string>();
+
+    for (const field of fields) {
+      const { duplicates } = await phase2_FindDuplicatesForField(
+        client,
+        field,
+        parsedArgs.batchSize,
+        seenDeleteIds
+      );
+      allDuplicates.push(...duplicates);
+      
+      // Clear field duplicates to free memory
+      duplicates.length = 0;
     }
 
     const totalToDelete = allDuplicates.reduce((sum, dup) => sum + dup.deleteIds.length, 0);
@@ -310,57 +426,40 @@ async function removeDuplicates(parsedArgs: ParsedArgs) {
       return;
     }
 
-    // Execute deletion
-    console.log(`\n🗑️  Removing ${totalToDelete} duplicate documents...\n`);
+    // === PHASE 3: Execute deletion in batches ===
+    console.log(`\n🗑️  Phase 3: Removing ${totalToDelete} duplicate documents...\n`);
 
-    let deleted = 0;
-    let errors = 0;
+    let totalDeleted = 0;
+    let totalErrors = 0;
     const deleteIds = allDuplicates.flatMap(dup => dup.deleteIds);
 
-    // Delete in batches
+    // Clear allDuplicates to free memory
+    allDuplicates.length = 0;
+
+    // Delete in batches with memory management
     for (let i = 0; i < deleteIds.length; i += parsedArgs.batchSize) {
-      const batch = deleteIds.slice(i, i + parsedArgs.batchSize);
+      const { deleted, errors } = await phase3_DeleteBatch(
+        client,
+        deleteIds,
+        parsedArgs.batchSize,
+        i
+      );
       
-      try {
-        const bulkOperations = batch.flatMap(id => [
-          { delete: { _index: INDEX_NAME, _id: id } }
-        ]);
+      totalDeleted += deleted;
+      totalErrors += errors;
 
-        const bulkResponse = await client.bulk({
-          operations: bulkOperations,
-          refresh: false
-        });
-
-        if (bulkResponse.errors) {
-          const errorCount = bulkResponse.items.filter((item: any) => item.delete?.error).length;
-          errors += errorCount;
-          deleted += batch.length - errorCount;
-        } else {
-          deleted += batch.length;
+      process.stdout.write(
+        `\r⏳ Progress: ${Math.min(i + parsedArgs.batchSize, deleteIds.length)}/${deleteIds.length} - ` +
+        `Deleted: ${totalDeleted}, Errors: ${totalErrors}`
+      );
     }
 
-        process.stdout.write(`\r⏳ Progress: ${Math.min(i + parsedArgs.batchSize, deleteIds.length)}/${deleteIds.length} - Deleted: ${deleted}, Errors: ${errors}`);
-      } catch (error) {
-        console.error(`\n❌ Error deleting batch:`, error);
-        errors += batch.length;
-      }
-    }
+    // Clear deleteIds to free memory
+    deleteIds.length = 0;
+    seenDeleteIds.clear();
 
-    // Refresh index
-    console.log('\n\n🔄 Refreshing index...');
-    await client.indices.refresh({ index: INDEX_NAME });
-
-    // Get new count
-    const newCountResponse = await client.count({ index: INDEX_NAME });
-
-    console.log('\n━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━');
-    console.log('✅ Duplicate removal complete!');
-    console.log(`━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━`);
-    console.log(`Documents deleted: ${deleted}`);
-    console.log(`Errors: ${errors}`);
-    console.log(`Previous document count: ${countResponse.count}`);
-    console.log(`New document count: ${newCountResponse.count}`);
-    console.log('');
+    // === PHASE 4: Finalize ===
+    await phase4_Finalize(client, totalDeleted, totalErrors, totalDocuments);
 
   } catch (error) {
     console.error('\n❌ Error:', error instanceof Error ? error.message : error);