Merge pull request #10 from gatewayd-io/v3-cnn-bilstm

Model v3: CNN BiLSTM

Author: mostafa

sqli_model/3/assets.extra/tf_serving_warmup_requests

@@ -0,0 +1 @@
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2

sqli_model/3/fingerprint.pb

@@ -18,12 +18,18 @@
     "model_path": "sqli_model/2",
     "index": 1,
 }
+MODELV3 = {
+    "dataset": "dataset/sqli_dataset2.csv",
+    "model_path": "sqli_model/3",
+    "index": 2,
+}
 
 
 @pytest.fixture(
     params=[
         MODELV1,
         MODELV2,
+        MODELV3,
     ],
 )
 def model(request):
@@ -47,18 +53,18 @@ def model(request):
 @pytest.mark.parametrize(
     "sample",
     [
-        ("select * from users where id=1 or 1=1;", [99.99, 97.40]),
-        ("select * from users where id='1' or 1=1--", [92.02, 97.40]),
-        ("select * from users", [0.077, 0.015]),
-        ("select * from users where id=10000", [14.83, 88.93]),
-        ("select '1' union select 'a'; -- -'", [99.99, 97.36]),
+        ("select * from users where id=1 or 1=1;", [99.99, 97.40, 11.96]),
+        ("select * from users where id='1' or 1=1--", [92.02, 97.40, 11.96]),
+        ("select * from users", [0.077, 0.015, 0.002]),
+        ("select * from users where id=10000", [14.83, 88.93, 0.229]),
+        ("select '1' union select 'a'; -- -'", [99.99, 97.32, 99.97]),
         (
-            """select '' union select 'malicious php code' \g /var/www/test.php; -- -';""",
-            [99.99, 80.65],
+            "select '' union select 'malicious php code' \g /var/www/test.php; -- -';",
+            [99.99, 80.65, 99.98],
         ),
         (
-            """select '' || pg_sleep((ascii((select 'a' limit 1)) - 32) / 2); -- -';""",
-            [99.99, 99.99],
+            "select '' || pg_sleep((ascii((select 'a' limit 1)) - 32) / 2); -- -';",
+            [99.99, 99.99, 99.93],
         ),
     ],
 )
@@ -73,7 +79,7 @@ def test_sqli_model(model, sample):
     # Scale up to 100
     output = "dense"
     if "output_0" in predictions:
-        output = "output_0"  # Model v2 uses output_0 instead of dense
+        output = "output_0"  # Model v2 and v3 use output_0 instead of dense
 
     print(predictions[output].numpy() * 100)  # Debugging purposes (prints on error)
     assert predictions[output].numpy() * 100 == pytest.approx(

sqli_model/3/saved_model.pb

@@ -0,0 +1,157 @@
+import sys
+import pandas as pd
+from tensorflow.keras.preprocessing.text import Tokenizer
+from tensorflow.keras.preprocessing.sequence import pad_sequences
+from tensorflow.keras.models import Sequential
+from tensorflow.keras.layers import (
+    Bidirectional,
+    Conv1D,
+    Dense,
+    Embedding,
+    Flatten,
+    LSTM,
+    MaxPooling1D,
+)
+from tensorflow.keras.metrics import Accuracy, Recall, Precision
+from tensorflow.keras.callbacks import EarlyStopping
+from sklearn.model_selection import train_test_split
+from sklearn.metrics import (
+    accuracy_score,
+    recall_score,
+    precision_score,
+    f1_score,
+    confusion_matrix,
+)
+import numpy as np
+import matplotlib.pyplot as plt
+
+
+# Check if the input file and output directory are provided
+if len(sys.argv) != 3:
+    print("Usage: python train.py <input_file> <output_dir>")
+    sys.exit(1)
+
+# Load dataset
+data = pd.read_csv(sys.argv[1])
+
+# Define parameters
+MAX_WORDS = 10000
+MAX_LEN = 100
+
+# Use Tokenizer to encode text
+tokenizer = Tokenizer(num_words=MAX_WORDS, filters="")
+tokenizer.fit_on_texts(data["Query"])
+sequences = tokenizer.texts_to_sequences(data["Query"])
+
+# Pad the text sequence
+X = pad_sequences(sequences, maxlen=MAX_LEN)
+
+# Split the training set and test set
+y = data["Label"]
+X_train, X_test, y_train, y_test = train_test_split(
+    X, y, test_size=0.2, random_state=42
+)
+
+# Create CNN-BiLSTM model
+model = Sequential()
+model.add(Embedding(MAX_WORDS, 128))
+model.add(Conv1D(filters=64, kernel_size=3, padding="same", activation="relu"))
+model.add(MaxPooling1D(pool_size=2))
+model.add(Bidirectional(LSTM(64, dropout=0.2, recurrent_dropout=0.2)))
+model.add(Flatten())
+model.add(Dense(1, activation="sigmoid"))
+
+model.compile(
+    loss="binary_crossentropy",
+    optimizer="adam",
+    metrics=[
+        Accuracy(),
+        Recall(),
+        Precision(),
+    ],
+)
+
+# Define early stopping callback with a rollback of 5
+early_stopping = EarlyStopping(
+    monitor="val_loss", patience=5, restore_best_weights=True
+)
+
+# Train model with early stopping
+history = model.fit(
+    X_train,
+    y_train,
+    epochs=50,  # Maximum number of epochs
+    batch_size=32,
+    validation_data=(X_test, y_test),
+    callbacks=[early_stopping],
+    verbose=1,
+)
+
+# Predict test set
+y_pred = model.predict(X_test, verbose=1)
+y_pred_classes = np.argmax(y_pred, axis=1)
+
+# Calculate model performance indicators
+accuracy = accuracy_score(y_test, y_pred_classes)
+recall = recall_score(y_test, y_pred_classes, zero_division=1)
+precision = precision_score(y_test, y_pred_classes, zero_division=1)
+f1 = f1_score(y_test, y_pred_classes, zero_division=1)
+tn, fp, fn, tp = confusion_matrix(y_test, y_pred_classes).ravel()
+
+# Output performance indicators
+print("Accuracy: {:.2f}%".format(accuracy * 100))
+print("Recall: {:.2f}%".format(recall * 100))
+print("Precision: {:.2f}%".format(precision * 100))
+print("F1-score: {:.2f}%".format(f1 * 100))
+print("Specificity: {:.2f}%".format(tn / (tn + fp) * 100))
+print("ROC: {:.2f}%".format(tp / (tp + fn) * 100))
+
+# Save model as SavedModel format
+model.export(sys.argv[2])
+
+
+# Plot the training history
+def plot_history(history):
+    plt.figure(figsize=(12, 8))
+
+    # Plot loss
+    plt.subplot(2, 2, 1)
+    plt.plot(history.history["loss"], label="Training Loss")
+    plt.plot(history.history["val_loss"], label="Validation Loss")
+    plt.title("Loss")
+    plt.xlabel("Epochs")
+    plt.ylabel("Loss")
+    plt.legend()
+
+    # Plot accuracy
+    plt.subplot(2, 2, 2)
+    plt.plot(history.history["accuracy"], label="Training Accuracy")
+    plt.plot(history.history["val_accuracy"], label="Validation Accuracy")
+    plt.title("Accuracy")
+    plt.xlabel("Epochs")
+    plt.ylabel("Accuracy")
+    plt.legend()
+
+    # Plot precision
+    plt.subplot(2, 2, 3)
+    plt.plot(history.history["precision"], label="Training Precision")
+    plt.plot(history.history["val_precision"], label="Validation Precision")
+    plt.title("Precision")
+    plt.xlabel("Epochs")
+    plt.ylabel("Precision")
+    plt.legend()
+
+    # Plot recall
+    plt.subplot(2, 2, 4)
+    plt.plot(history.history["recall"], label="Training Recall")
+    plt.plot(history.history["val_recall"], label="Validation Recall")
+    plt.title("Recall")
+    plt.xlabel("Epochs")
+    plt.ylabel("Recall")
+    plt.legend()
+
+    plt.tight_layout()
+    plt.savefig("training_history.png")
+
+
+plot_history(history)