First commit
This commit is contained in:
Juhani Haverinen
commit
9f81b8964a
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It serves gopher, duh.
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Modify lines 37 and 38 to configure.
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Will automatically attempts to execute anything with execute bit (except directories).
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Requires Python 2, as Python 3's string handling it just weird.
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Also responds to HTTP queries.
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This is free and unencumbered software released into the public domain.
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Anyone is free to copy, modify, publish, use, compile, sell, or
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distribute this software, either in source code form or as a compiled
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binary, for any purpose, commercial or non-commercial, and by any
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means.
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In jurisdictions that recognize copyright laws, the author or authors
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of this software dedicate any and all copyright interest in the
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software to the public domain. We make this dedication for the benefit
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of the public at large and to the detriment of our heirs and
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successors. We intend this dedication to be an overt act of
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relinquishment in perpetuity of all present and future rights to this
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software under copyright law.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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OTHER DEALINGS IN THE SOFTWARE.
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For more information, please refer to [http://unlicense.org]
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#!/usr/bin/python
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# Software written by Juhani Haverinen (nortti). Influenced in idea and
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# some implementation details by https://github.com/puckipedia/pyGopher/
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# -----------------------------------------------------------------------
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# This is free and unencumbered software released into the public domain.
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#
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# Anyone is free to copy, modify, publish, use, compile, sell, or
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# distribute this software, either in source code form or as a compiled
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# binary, for any purpose, commercial or non-commercial, and by any
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# means.
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#
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# In jurisdictions that recognize copyright laws, the author or authors
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# of this software dedicate any and all copyright interest in the
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# software to the public domain. We make this dedication for the benefit
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# of the public at large and to the detriment of our heirs and
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# successors. We intend this dedication to be an overt act of
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# relinquishment in perpetuity of all present and future rights to this
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# software under copyright law.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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# IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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# OTHER DEALINGS IN THE SOFTWARE.
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# -----------------------------------------------------------------------
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# NOTE: Requires python 2 due to python 3's braindeadness.
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import os
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import socket
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import stat
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import subprocess
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import threading
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# Config
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port = 7070
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gopherroot = os.environ['HOME']+'/gopher'
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# Set up socket
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sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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sock.bind(('', port))
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sock.listen(1)
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# Helper functions
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def exist(path):
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return os.access(path, os.F_OK)
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def isdir(path):
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st = os.stat(path)
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return stat.S_ISDIR(st.st_mode)
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def isexecutable(path):
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return os.access(path, os.X_OK)
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def normalizepath(path):
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path = path.split('/')
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while '' in path:
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path.remove('')
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while '..' in path:
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i = path.index('..')
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if i == 0:
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return None # Attempted to access something outside gopherroot
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path = path[:i-1] + path[i+1:]
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return '/'.join(path)
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# Error handling
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def notfounderror(conn, path):
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conn.sendall('3"%s" does not exist\t/\t(null)\t0\n' % path)
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def notallowederror(conn, path):
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conn.sendall('3Access denied\t/\t(null)\t0\n')
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# Server implementation
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def getrequest(conn):
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data = ''
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while True:
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chunk = conn.recv(1024)
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if not chunk:
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return None
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data += chunk
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if data[-1] == '\n':
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break
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while len(data) > 0 and data[-1] in ('\r', '\n'):
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data = data[:-1]
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# Minimal HTTP support
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if len(data) >= 4 and data[:4] == 'GET ':
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data = data.split()[1]
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return data.split('\t')
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def serveurlredirect(conn, path):
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path = path[4:]
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conn.sendall('<!DOCTYPE html>\n'
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'<html>\n'
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'\t<head>\n'
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'\t\t<meta http-equiv="refresh" content="1;URL=%s">\n'
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'\t</head>\n'
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'\t<body>\n'
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'\t\t<p><a href="%s">Redirect to %s</a></p>\n'
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'\t</body>\n'
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'</html>' % (path, path, path))
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def servecommon(conn, fd):
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for line in fd:
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conn.sendall(line)
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fd.close()
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def servecgi(conn, path):
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proc = subprocess.Popen([path], stdout=subprocess.PIPE)
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servecommon(conn, proc.stdout)
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def servefile(conn, path):
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f = open(path, 'r')
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servecommon(conn, f)
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def serverequest(conn, request):
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# URL link extension
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if len(request[0]) >= 4 and request[0][:4] == 'URL:':
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return serveurlredirect(conn, request[0])
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reqpath = normalizepath(request[0])
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if reqpath == None:
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return notallowederror(conn, reqpath)
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path = gopherroot + '/' + reqpath
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if not exist(path):
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return notfounderror(conn, reqpath)
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if isdir(path):
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if exist(path + '/gophermap'):
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path = path + '/gophermap'
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else:
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return notfounderror(conn, reqpath)
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if isexecutable(path):
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servecgi(conn, path)
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else:
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servefile(conn, path)
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class Serve(threading.Thread):
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def __init__(self, conn):
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self.conn = conn
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threading.Thread.__init__(self)
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def run(self):
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try:
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request = getrequest(self.conn)
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if not request:
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self.conn.shutdown(socket.SHUT_RDWR)
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self.conn.close()
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return
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serverequest(self.conn, request)
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self.conn.shutdown(socket.SHUT_RDWR)
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self.conn.close()
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except socket.error:
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self.conn.close()
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while True:
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conn, addr = sock.accept()
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Serve(conn).start()
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