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"""Mozilla / Netscape cookie loading / saving.""" import re, time from cookielib import (_warn_unhandled_exception, FileCookieJar, LoadError, Cookie, MISSING_FILENAME_TEXT) class MozillaCookieJar(FileCookieJar): """ WARNING: you may want to backup your browser's cookies file if you use this class to save cookies. I *think* it works, but there have been bugs in the past! This class differs from CookieJar only in the format it uses to save and load cookies to and from a file. This class uses the Mozilla/Netscape `cookies.txt' format. lynx uses this file format, too. Don't expect cookies saved while the browser is running to be noticed by the browser (in fact, Mozilla on unix will overwrite your saved cookies if you change them on disk while it's running; on Windows, you probably can't save at all while the browser is running). Note that the Mozilla/Netscape format will downgrade RFC2965 cookies to Netscape cookies on saving. In particular, the cookie version and port number information is lost, together with information about whether or not Path, Port and Discard were specified by the Set-Cookie2 (or Set-Cookie) header, and whether or not the domain as set in the HTTP header started with a dot (yes, I'm aware some domains in Netscape files start with a dot and some don't -- trust me, you really don't want to know any more about this). Note that though Mozilla and Netscape use the same format, they use slightly different headers. The class saves cookies using the Netscape header by default (Mozilla can cope with that). """ magic_re = "#( Netscape)? HTTP Cookie File" header = """\ # Netscape HTTP Cookie File # http://www.netscape.com/newsref/std/cookie_spec.html # This is a generated file! Do not edit. """ def _really_load(self, f, filename, ignore_discard, ignore_expires): now = time.time() magic = f.readline() if not re.search(self.magic_re, magic): f.close() raise LoadError( "%r does not look like a Netscape format cookies file" % filename) try: while 1: line = f.readline() if line == "": break # last field may be absent, so keep any trailing tab if line.endswith("\n"): line = line[:-1] # skip comments and blank lines XXX what is $ for? if (line.strip().startswith(("#", "$")) or line.strip() == ""): continue domain, domain_specified, path, secure, expires, name, value = \ line.split("\t") secure = (secure == "TRUE") domain_specified = (domain_specified == "TRUE") if name == "": # cookies.txt regards 'Set-Cookie: foo' as a cookie # with no name, whereas cookielib regards it as a # cookie with no value. name = value value = None initial_dot = domain.startswith(".") assert domain_specified == initial_dot discard = False if expires == "": expires = None discard = True # assume path_specified is false c = Cookie(0, name, value, None, False, domain, domain_specified, initial_dot, path, False, secure, expires, discard, None, None, {}) if not ignore_discard and c.discard: continue if not ignore_expires and c.is_expired(now): continue self.set_cookie(c) except IOError: raise except Exception: _warn_unhandled_exception() raise LoadError("invalid Netscape format cookies file %r: %r" % (filename, line)) def save(self, filename=None, ignore_discard=False, ignore_expires=False): if filename is None: if self.filename is not None: filename = self.filename else: raise ValueError(MISSING_FILENAME_TEXT) f = open(filename, "w") try: f.write(self.header) now = time.time() for cookie in self: if not ignore_discard and cookie.discard: continue if not ignore_expires and cookie.is_expired(now): continue if cookie.secure: secure = "TRUE" else: secure = "FALSE" if cookie.domain.startswith("."): initial_dot = "TRUE" else: initial_dot = "FALSE" if cookie.expires is not None: expires = str(cookie.expires) else: expires = "" if cookie.value is None: # cookies.txt regards 'Set-Cookie: foo' as a cookie # with no name, whereas cookielib regards it as a # cookie with no value. name = "" value = cookie.name else: name = cookie.name value = cookie.value f.write( "\t".join([cookie.domain, initial_dot, cookie.path, secure, expires, name, value])+ "\n") finally: f.close()


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