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#!/usr/bin/env python
import sys, stat, urllib, mimetypes, posixpath, time
import tornado.httpserver
import tornado.ioloop
import tornado.web
from bup import options, git, vfs
from bup.helpers import *
handle_ctrl_c()
def _compute_breadcrumbs(path):
"""Returns a list of breadcrumb objects for a path."""
breadcrumbs = []
breadcrumbs.append(('[root]', '/'))
path_parts = path.split('/')[1:-1]
full_path = '/'
for part in path_parts:
full_path += part + '/'
breadcrumbs.append((part, full_path))
return breadcrumbs
def _contains_hidden_files(n):
"""Return True if n contains files starting with a '.', False otherwise."""
for sub in n:
name = sub.name
if len(name)>1 and name.startswith('.'):
return True
return False
def _compute_dir_contents(n, show_hidden=False):
"""Given a vfs node, returns an iterator for display info of all subs."""
for sub in n:
display = link = sub.name
if not show_hidden and len(display)>1 and display.startswith('.'):
continue
# link should be based on fully resolved type to avoid extra
# HTTP redirect.
if stat.S_ISDIR(sub.try_resolve().mode):
link = sub.name + "/"
size = None
if stat.S_ISDIR(sub.mode):
display = sub.name + '/'
elif stat.S_ISLNK(sub.mode):
display = sub.name + '@'
else:
size = sub.size()
yield (display, link, size)
class BupRequestHandler(tornado.web.RequestHandler):
def get(self, path):
return self._process_request(path)
def head(self, path):
return self._process_request(path)
def _process_request(self, path):
path = urllib.unquote(path)
print 'Handling request for %s' % path
try:
n = top.resolve(path)
except vfs.NoSuchFile:
self.send_error(404)
return
f = None
if stat.S_ISDIR(n.mode):
self._list_directory(path, n)
else:
self._get_file(path, n)
def _list_directory(self, path, n):
"""Helper to produce a directory listing.
Return value is either a file object, or None (indicating an
error). In either case, the headers are sent.
"""
if not path.endswith('/') and len(path) > 0:
print 'Redirecting from %s to %s' % (path, path + '/')
return self.redirect(path + '/', permanent=True)
try:
show_hidden = int(self.request.arguments.get('hidden', [0])[-1])
except ValueError, e:
show_hidden = False
self.render(
'list-directory.html',
path=path,
breadcrumbs=_compute_breadcrumbs(path),
files_hidden=_contains_hidden_files(n),
hidden_shown=show_hidden,
dir_contents=_compute_dir_contents(n, show_hidden),
# We need the standard url_escape so we don't escape /
url_escape=urllib.quote)
def _get_file(self, path, n):
"""Process a request on a file.
Return value is either a file object, or None (indicating an error).
In either case, the headers are sent.
"""
ctype = self._guess_type(path)
self.set_header("Last-Modified", self.date_time_string(n.mtime))
self.set_header("Content-Type", ctype)
size = n.size()
self.set_header("Content-Length", str(size))
if self.request.method != 'HEAD':
f = n.open()
for blob in chunkyreader(f):
self.write(blob)
f.close()
def _guess_type(self, path):
"""Guess the type of a file.
Argument is a PATH (a filename).
Return value is a string of the form type/subtype,
usable for a MIME Content-type header.
The default implementation looks the file's extension
up in the table self.extensions_map, using application/octet-stream
as a default; however it would be permissible (if
slow) to look inside the data to make a better guess.
"""
base, ext = posixpath.splitext(path)
if ext in self.extensions_map:
return self.extensions_map[ext]
ext = ext.lower()
if ext in self.extensions_map:
return self.extensions_map[ext]
else:
return self.extensions_map['']
if not mimetypes.inited:
mimetypes.init() # try to read system mime.types
extensions_map = mimetypes.types_map.copy()
extensions_map.update({
'': 'text/plain', # Default
'.py': 'text/plain',
'.c': 'text/plain',
'.h': 'text/plain',
})
def date_time_string(self, t):
return time.strftime('%a, %d %b %Y %H:%M:%S', time.gmtime(t))
optspec = """
bup web [[hostname]:port]
--
"""
o = options.Options('bup web', optspec)
(opt, flags, extra) = o.parse(sys.argv[1:])
if len(extra) > 1:
o.fatal("at most one argument expected")
address = ('127.0.0.1', 8080)
if len(extra) > 0:
addressl = extra[0].split(':', 1)
addressl[1] = int(addressl[1])
address = tuple(addressl)
git.check_repo_or_die()
top = vfs.RefList(None)
settings = dict(
debug = 1,
template_path = resource_path('web'),
)
# Disable buffering on stdout, for debug messages
sys.stdout = os.fdopen(sys.stdout.fileno(), 'w', 0)
application = tornado.web.Application([
(r"(/.*)", BupRequestHandler),
], **settings)
if __name__ == "__main__":
http_server = tornado.httpserver.HTTPServer(application)
http_server.listen(address[1], address=address[0])
print "Serving HTTP on %s:%d..." % http_server._socket.getsockname()
loop = tornado.ioloop.IOLoop.instance()
loop.start()
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