server creates dummy db for initial upload

overwrought_master.py

@@ -255,7 +255,7 @@ def post_pack():
 	for mod in mods:
 		files[mod.filename] = open(os.path.join('mods', mod.filename), 'rb')
 	files[config_master.modpack_name + '.html'] = open(
-		config_master.modpack_name, 'rb')
+		config_master.modpack_name +'.html', 'rb')
 
 	res = requests.post(
 		url=config_master.remote_addr + '/post',

overwrought_server.py

@@ -2,6 +2,7 @@
 """
 The overwrought server, for exchanging mods from master to slave recipients.
 """
+import os
 import json
 import sqlite3
 import threading
@@ -13,6 +14,22 @@ import config_server
 
 app = Flask(__name__)
 app.config['db_lock'] = threading.Lock()
+os.makedirs('mods', exist_ok=True)
+
+def init_db():
+	"""
+	If no database is found, a dummy database is created to allow the
+	initial modpack upload to go smoothly.
+	"""
+	con = sqlite3.connect('modpack.db')
+	cur = con.cursor()
+	try:
+		cur.execute("SELECT filename FROM mod").fetchone()
+	except sqlite3.OperationalError:
+		cur.execute("CREATE TABLE mod(filename TEXT)")
+		con.commit()
+	con.close()
+init_db()
 
 @app.route('/')
 def index():