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#!/usr/bin/python
# -*- coding: utf-8 -*-
from http.server import BaseHTTPRequestHandler, HTTPServer
from string import Template
import time
import psycopg2
import psycopg2.extras
import sys
import os
def main():
#
# Settings
#
settings = dict(
db = dict(
user = 'bootstrap',
password = 'asdf',
dbname = 'bootstrap',
host = 'localhost'
),
http = dict(
# host = 'localhost',
host = '10.0.30.131',
port = 8080
)
)
#
# Connect to DB
#
try:
connect_params = ("dbname='%s' user='%s' host='%s' password='%s'" % (settings['db']['dbname'], settings['db']['user'], settings['db']['host'], settings['db']['password']))
conn = psycopg2.connect(connect_params)
# cur = conn.cursor()
cur = conn.cursor(cursor_factory=psycopg2.extras.DictCursor)
cur.execute("""SELECT * from switches""")
rows = cur.fetchall()
print ("\nSwitches in DB during server_http.py startup:")
for row in rows:
print (" --> %s, connected to %s port %s" % (row['hostname'], row['distro_name'], row['distro_phy_port']))
except (psycopg2.DatabaseError, psycopg2.OperationalError) as e:
print ('Error: %s' % e)
sys.exit(1)
except:
print(sys.exc_info()[0])
sys.exit(1)
def template_get(model):
return open('junos-bootstrap/httpd/' + model + '.template').read()
def template_parse(template_src, hostname):
cur.execute("SELECT * FROM switches WHERE hostname = '%s'" % hostname)
if(cur.rowcount == 1):
row = cur.fetchall()[0]
d={
'hostname': row['hostname'],
'distro_name': row['distro_name'],
'distro_phy_port': row['distro_phy_port'],
'mgmt_addr': row['mgmt_addr'],
'mgmt_cidr': row['mgmt_cidr'],
'mgmt_gw': row['mgmt_gw'],
'mgmt_vlan': row['mgmt_vlan']
}
return Template(template_src).safe_substitute(d)
else:
return False
class httpd(BaseHTTPRequestHandler):
def do_GET(self):
print('[%s] [%s] Incoming HTTP GET URI:%s ' % (self.client_address[0], time.asctime(), self.path))
# Client asks for the config file
if '/tg15-edge/' in self.path:
hostname = self.path.split('/tg15-edge/')[1]
if len(hostname) > 0:
print('[%s] --> Hostname "%s" accepted, fetching info from DB' % (self.client_address[0], hostname))
template_parsed = template_parse(template_get('ex2200'), hostname)
if template_parsed:
print('[%s] --> Template successfully populated' % self.client_address[0])
print('[%s] --> Sending response to client' % self.client_address[0])
self.send_response(200)
self.send_header("Content-type", "text/plain")
self.end_headers()
self.wfile.write(bytes(template_parsed, "utf-8"))
print('[%s] --> Success - %s bytes sent to client' % (self.client_address[0], len(template_parsed)))
else:
print('[%s] --> Error - template could not be populated' % self.client_address[0])
else:
print('[%s] --> Rejected due to missing hostname' % self.client_address[0])
# Client asks for a file download - most likely a JunOS file
elif '/files/' in self.path:
# It seems that "http.server" escapes nastiness from the URL - ("/files/../../../root_file" => "/files/root_file")
requested_file = self.path.split('/files/')[1]
files_dir = 'junos-bootstrap/httpd/files/'
print('[%s] --> File request for "%s" in "%s"' % (self.client_address[0], requested_file, files_dir))
if os.path.isfile(files_dir + requested_file):
print('[%s] --> File found' % self.client_address[0])
try:
f = open(files_dir + requested_file)
self.send_response(200)
self.send_header('Content-type', 'application/x-gzip') # correct content type for tar.gz
self.end_headers()
print('[%s] --> File transfer started' % self.client_address[0])
f = open(files_dir + requested_file, 'rb')
self.wfile.write(f.read())
f.close()
print('[%s] --> File transfer completed' % self.client_address[0])
return
except IOError:
self.send_error(404,'File Not Found: %s' % self.path)
print('[%s] --> ERROR 404 - File not found' % self.client_address[0])
pass
except:
print('[%s] --> Generic error during file reading' % self.client_address[0])
pass
else:
print('[%s] --> File request rejected due to nonexisting file' % self.client_address[0])
else:
print('[%s] --> rejected due to bad path' % self.client_address[0])
# silence stderr from BaseHTTPRequestHandler
# source: http://stackoverflow.com/questions/3389305/how-to-silent-quiet-httpserver-and-basichttprequesthandlers-stderr-output
def log_message(self, format, *args):
return
httpd_instance = HTTPServer((settings['http']['host'], settings['http']['port']), httpd)
print("\n[%s] Server Starts - %s:%s" % (time.asctime(), settings['http']['host'], settings['http']['port']))
try:
httpd_instance.serve_forever()
except KeyboardInterrupt:
pass
httpd_instance.server_close()
print("\n\n[%s] HTTP Server stopped\n" % time.asctime())
if __name__ == "__main__":
main()
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