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#! /usr/bin/env python
"""GUI interface to webchecker.
This works as a Grail applet too! E.g.
<APPLET CODE=wcgui.py NAME=CheckerWindow></APPLET>
Checkpoints are not (yet??? ever???) supported.
User interface:
Enter a root to check in the text entry box. To enter more than one root,
enter them one at a time and press <Return> for each one.
Command buttons Start, Stop and "Check one" govern the checking process in
the obvious way. Start and "Check one" also enter the root from the text
entry box if one is present. There's also a check box (enabled by default)
to decide whether actually to follow external links (since this can slow
the checking down considerably). Finally there's a Quit button.
A series of checkbuttons determines whether the corresponding output panel
is shown. List panels are also automatically shown or hidden when their
status changes between empty to non-empty. There are six panels:
Log -- raw output from the checker (-v, -q affect this)
To check -- links discovered but not yet checked
Checked -- links that have been checked
Bad links -- links that failed upon checking
Errors -- pages containing at least one bad link
Details -- details about one URL; double click on a URL in any of
the above list panels (not in Log) will show details
for that URL
Use your window manager's Close command to quit.
Command line options:
-m bytes -- skip HTML pages larger than this size (default %(MAXPAGE)d)
-q -- quiet operation (also suppresses external links report)
-v -- verbose operation; repeating -v will increase verbosity
-t root -- specify root dir which should be treated as internal (can repeat)
-a -- don't check name anchors
Command line arguments:
rooturl -- URL to start checking
(default %(DEFROOT)s)
XXX The command line options (-m, -q, -v) should be GUI accessible.
XXX The roots should be visible as a list (?).
XXX The multipanel user interface is clumsy.
"""
# ' Emacs bait
import sys
import getopt
from Tkinter import *
import tktools
import webchecker
import random
# Override some for a weaker platform
if sys.platform == 'mac':
webchecker.DEFROOT = "http://grail.cnri.reston.va.us/"
webchecker.MAXPAGE = 50000
webchecker.verbose = 4
def main():
try:
opts, args = getopt.getopt(sys.argv[1:], 't:m:qva')
except getopt.error, msg:
sys.stdout = sys.stderr
print msg
print __doc__%vars(webchecker)
sys.exit(2)
webchecker.verbose = webchecker.VERBOSE
webchecker.nonames = webchecker.NONAMES
webchecker.maxpage = webchecker.MAXPAGE
extra_roots = []
for o, a in opts:
if o == '-m':
webchecker.maxpage = int(a)
if o == '-q':
webchecker.verbose = 0
if o == '-v':
webchecker.verbose = webchecker.verbose + 1
if o == '-t':
extra_roots.append(a)
if o == '-a':
webchecker.nonames = not webchecker.nonames
root = Tk(className='Webchecker')
root.protocol("WM_DELETE_WINDOW", root.quit)
c = CheckerWindow(root)
c.setflags(verbose=webchecker.verbose, maxpage=webchecker.maxpage,
nonames=webchecker.nonames)
if args:
for arg in args[:-1]:
c.addroot(arg)
c.suggestroot(args[-1])
# Usually conditioned on whether external links
# will be checked, but since that's not a command
# line option, just toss them in.
for url_root in extra_roots:
# Make sure it's terminated by a slash,
# so that addroot doesn't discard the last
# directory component.
if url_root[-1] != "/":
url_root = url_root + "/"
c.addroot(url_root, add_to_do = 0)
root.mainloop()
class CheckerWindow(webchecker.Checker):
def __init__(self, parent, root=webchecker.DEFROOT):
self.__parent = parent
self.__topcontrols = Frame(parent)
self.__topcontrols.pack(side=TOP, fill=X)
self.__label = Label(self.__topcontrols, text="Root URL:")
self.__label.pack(side=LEFT)
self.__rootentry = Entry(self.__topcontrols, width=60)
self.__rootentry.pack(side=LEFT)
self.__rootentry.bind('<Return>', self.enterroot)
self.__rootentry.focus_set()
self.__controls = Frame(parent)
self.__controls.pack(side=TOP, fill=X)
self.__running = 0
self.__start = Button(self.__controls, text="Run", command=self.start)
self.__start.pack(side=LEFT)
self.__stop = Button(self.__controls, text="Stop", command=self.stop,
state=DISABLED)
self.__stop.pack(side=LEFT)
self.__step = Button(self.__controls, text="Check one",
command=self.step)
self.__step.pack(side=LEFT)
self.__cv = BooleanVar(parent)
self.__cv.set(self.checkext)
self.__checkext = Checkbutton(self.__controls, variable=self.__cv,
command=self.update_checkext,
text="Check nonlocal links",)
self.__checkext.pack(side=LEFT)
self.__reset = Button(self.__controls, text="Start over", command=self.reset)
self.__reset.pack(side=LEFT)
if __name__ == '__main__': # No Quit button under Grail!
self.__quit = Button(self.__controls, text="Quit",
command=self.__parent.quit)
self.__quit.pack(side=RIGHT)
self.__status = Label(parent, text="Status: initial", anchor=W)
self.__status.pack(side=TOP, fill=X)
self.__checking = Label(parent, text="Idle", anchor=W)
self.__checking.pack(side=TOP, fill=X)
self.__mp = mp = MultiPanel(parent)
sys.stdout = self.__log = LogPanel(mp, "Log")
self.__todo = ListPanel(mp, "To check", self, self.showinfo)
self.__done = ListPanel(mp, "Checked", self, self.showinfo)
self.__bad = ListPanel(mp, "Bad links", self, self.showinfo)
self.__errors = ListPanel(mp, "Pages w/ bad links", self, self.showinfo)
self.__details = LogPanel(mp, "Details")
self.root_seed = None
webchecker.Checker.__init__(self)
if root:
root = str(root).strip()
if root:
self.suggestroot(root)
self.newstatus()
def reset(self):
webchecker.Checker.reset(self)
for p in self.__todo, self.__done, self.__bad, self.__errors:
p.clear()
if self.root_seed:
self.suggestroot(self.root_seed)
def suggestroot(self, root):
self.__rootentry.delete(0, END)
self.__rootentry.insert(END, root)
self.__rootentry.select_range(0, END)
self.root_seed = root
def enterroot(self, event=None):
root = self.__rootentry.get()
root = root.strip()
if root:
self.__checking.config(text="Adding root "+root)
self.__checking.update_idletasks()
self.addroot(root)
self.__checking.config(text="Idle")
try:
i = self.__todo.items.index(root)
except (ValueError, IndexError):
pass
else:
self.__todo.list.select_clear(0, END)
self.__todo.list.select_set(i)
self.__todo.list.yview(i)
self.__rootentry.delete(0, END)
def start(self):
self.__start.config(state=DISABLED, relief=SUNKEN)
self.__stop.config(state=NORMAL)
self.__step.config(state=DISABLED)
self.enterroot()
self.__running = 1
self.go()
def stop(self):
self.__stop.config(state=DISABLED, relief=SUNKEN)
self.__running = 0
def step(self):
self.__start.config(state=DISABLED)
self.__step.config(state=DISABLED, relief=SUNKEN)
self.enterroot()
self.__running = 0
self.dosomething()
def go(self):
if self.__running:
self.__parent.after_idle(self.dosomething)
else:
self.__checking.config(text="Idle")
self.__start.config(state=NORMAL, relief=RAISED)
self.__stop.config(state=DISABLED, relief=RAISED)
self.__step.config(state=NORMAL, relief=RAISED)
__busy = 0
def dosomething(self):
if self.__busy: return
self.__busy = 1
if self.todo:
l = self.__todo.selectedindices()
if l:
i = l[0]
else:
i = 0
self.__todo.list.select_set(i)
self.__todo.list.yview(i)
url = self.__todo.items[i]
self.__checking.config(text="Checking "+self.format_url(url))
self.__parent.update()
self.dopage(url)
else:
self.stop()
self.__busy = 0
self.go()
def showinfo(self, url):
d = self.__details
d.clear()
d.put("URL: %s\n" % self.format_url(url))
if self.bad.has_key(url):
d.put("Error: %s\n" % str(self.bad[url]))
if url in self.roots:
d.put("Note: This is a root URL\n")
if self.done.has_key(url):
d.put("Status: checked\n")
o = self.done[url]
elif self.todo.has_key(url):
d.put("Status: to check\n")
o = self.todo[url]
else:
d.put("Status: unknown (!)\n")
o = []
if (not url[1]) and self.errors.has_key(url[0]):
d.put("Bad links from this page:\n")
for triple in self.errors[url[0]]:
link, rawlink, msg = triple
d.put(" HREF %s" % self.format_url(link))
if self.format_url(link) != rawlink: d.put(" (%s)" %rawlink)
d.put("\n")
d.put(" error %s\n" % str(msg))
self.__mp.showpanel("Details")
for source, rawlink in o:
d.put("Origin: %s" % source)
if rawlink != self.format_url(url):
d.put(" (%s)" % rawlink)
d.put("\n")
d.text.yview("1.0")
def setbad(self, url, msg):
webchecker.Checker.setbad(self, url, msg)
self.__bad.insert(url)
self.newstatus()
def setgood(self, url):
webchecker.Checker.setgood(self, url)
self.__bad.remove(url)
self.newstatus()
def newlink(self, url, origin):
webchecker.Checker.newlink(self, url, origin)
if self.done.has_key(url):
self.__done.insert(url)
elif self.todo.has_key(url):
self.__todo.insert(url)
self.newstatus()
def markdone(self, url):
webchecker.Checker.markdone(self, url)
self.__done.insert(url)
self.__todo.remove(url)
self.newstatus()
def seterror(self, url, triple):
webchecker.Checker.seterror(self, url, triple)
self.__errors.insert((url, ''))
self.newstatus()
def newstatus(self):
self.__status.config(text="Status: "+self.status())
self.__parent.update()
def update_checkext(self):
self.checkext = self.__cv.get()
class ListPanel:
def __init__(self, mp, name, checker, showinfo=None):
self.mp = mp
self.name = name
self.showinfo = showinfo
self.checker = checker
self.panel = mp.addpanel(name)
self.list, self.frame = tktools.make_list_box(
self.panel, width=60, height=5)
self.list.config(exportselection=0)
if showinfo:
self.list.bind('<Double-Button-1>', self.doubleclick)
self.items = []
def clear(self):
self.items = []
self.list.delete(0, END)
self.mp.hidepanel(self.name)
def doubleclick(self, event):
l = self.selectedindices()
if l:
self.showinfo(self.items[l[0]])
def selectedindices(self):
l = self.list.curselection()
if not l: return []
return map(int, l)
def insert(self, url):
if url not in self.items:
if not self.items:
self.mp.showpanel(self.name)
# (I tried sorting alphabetically, but the display is too jumpy)
i = len(self.items)
self.list.insert(i, self.checker.format_url(url))
self.list.yview(i)
self.items.insert(i, url)
def remove(self, url):
try:
i = self.items.index(url)
except (ValueError, IndexError):
pass
else:
was_selected = i in self.selectedindices()
self.list.delete(i)
del self.items[i]
if not self.items:
self.mp.hidepanel(self.name)
elif was_selected:
if i >= len(self.items):
i = len(self.items) - 1
self.list.select_set(i)
class LogPanel:
def __init__(self, mp, name):
self.mp = mp
self.name = name
self.panel = mp.addpanel(name)
self.text, self.frame = tktools.make_text_box(self.panel, height=10)
self.text.config(wrap=NONE)
def clear(self):
self.text.delete("1.0", END)
self.text.yview("1.0")
def put(self, s):
self.text.insert(END, s)
if '\n' in s:
self.text.yview(END)
def write(self, s):
self.text.insert(END, s)
if '\n' in s:
self.text.yview(END)
self.panel.update()
class MultiPanel:
def __init__(self, parent):
self.parent = parent
self.frame = Frame(self.parent)
self.frame.pack(expand=1, fill=BOTH)
self.topframe = Frame(self.frame, borderwidth=2, relief=RAISED)
self.topframe.pack(fill=X)
self.botframe = Frame(self.frame)
self.botframe.pack(expand=1, fill=BOTH)
self.panelnames = []
self.panels = {}
def addpanel(self, name, on=0):
v = StringVar(self.parent)
if on:
v.set(name)
else:
v.set("")
check = Checkbutton(self.topframe, text=name,
offvalue="", onvalue=name, variable=v,
command=self.checkpanel)
check.pack(side=LEFT)
panel = Frame(self.botframe)
label = Label(panel, text=name, borderwidth=2, relief=RAISED, anchor=W)
label.pack(side=TOP, fill=X)
t = v, check, panel
self.panelnames.append(name)
self.panels[name] = t
if on:
panel.pack(expand=1, fill=BOTH)
return panel
def showpanel(self, name):
v, check, panel = self.panels[name]
v.set(name)
panel.pack(expand=1, fill=BOTH)
def hidepanel(self, name):
v, check, panel = self.panels[name]
v.set("")
panel.pack_forget()
def checkpanel(self):
for name in self.panelnames:
v, check, panel = self.panels[name]
panel.pack_forget()
for name in self.panelnames:
v, check, panel = self.panels[name]
if v.get():
panel.pack(expand=1, fill=BOTH)
if __name__ == '__main__':
main()
###webchecker.py###################################################################################
#! /usr/bin/env python
# Original code by Guido van Rossum; extensive changes by Sam Bayer,
# including code to check URL fragments.
"""Web tree checker.
This utility is handy to check a subweb of the world-wide web for
errors. A subweb is specified by giving one or more ''root URLs''; a
page belongs to the subweb if one of the root URLs is an initial
prefix of it.
File URL extension:
In order to easy the checking of subwebs via the local file system,
the interpretation of ''file:'' URLs is extended to mimic the behavior
of your average HTTP daemon: if a directory pathname is given, the
file index.html in that directory is returned if it exists, otherwise
a directory listing is returned. Now, you can point webchecker to the
document tree in the local file system of your HTTP daemon, and have
most of it checked. In fact the default works this way if your local
web tree is located at /usr/local/etc/httpd/htdpcs (the default for
the NCSA HTTP daemon and probably others).
Report printed:
When done, it reports pages with bad links within the subweb. When
interrupted, it reports for the pages that it has checked already.
In verbose mode, additional messages are printed during the
information gathering phase. By default, it prints a summary of its
work status every 50 URLs (adjustable with the -r option), and it
reports errors as they are encountered. Use the -q option to disable
this output.
Checkpoint feature:
Whether interrupted or not, it dumps its state (a Python pickle) to a
checkpoint file and the -R option allows it to restart from the
checkpoint (assuming that the pages on the subweb that were already
processed haven't changed). Even when it has run till completion, -R
can still be useful -- it will print the reports again, and -Rq prints
the errors only. In this case, the checkpoint file is not written
again. The checkpoint file can be set with the -d option.
The checkpoint file is written as a Python pickle. Remember that
Python's pickle module is currently quite slow. Give it the time it
needs to load and save the checkpoint file. When interrupted while
writing the checkpoint file, the old checkpoint file is not
overwritten, but all work done in the current run is lost.
Miscellaneous:
- You may find the (Tk-based) GUI version easier to use. See wcgui.py.
- Webchecker honors the "robots.txt" convention. Thanks to Skip
Montanaro for his robotparser.py module (included in this directory)!
The agent name is hardwired to "webchecker". URLs that are disallowed
by the robots.txt file are reported as external URLs.
- Because the SGML parser is a bit slow, very large SGML files are
skipped. The size limit can be set with the -m option.
- When the server or protocol does not tell us a file's type, we guess
it based on the URL's suffix. The mimetypes.py module (also in this
directory) has a built-in table mapping most currently known suffixes,
and in addition attempts to read the mime.types configuration files in
the default locations of Netscape and the NCSA HTTP daemon.
- We follow links indicated by <A>, <FRAME> and <IMG> tags. We also
honor the <BASE> tag.
- We now check internal NAME anchor links, as well as toplevel links.
- Checking external links is now done by default; use -x to *disable*
this feature. External links are now checked during normal
processing. (XXX The status of a checked link could be categorized
better. Later...)
- If external links are not checked, you can use the -t flag to
provide specific overrides to -x.
Usage: webchecker.py [option] ... [rooturl] ...
Options:
-R -- restart from checkpoint file
-d file -- checkpoint filename (default %(DUMPFILE)s)
-m bytes -- skip HTML pages larger than this size (default %(MAXPAGE)d)
-n -- reports only, no checking (use with -R)
-q -- quiet operation (also suppresses external links report)
-r number -- number of links processed per round (default %(ROUNDSIZE)d)
-t root -- specify root dir which should be treated as internal (can repeat)
-v -- verbose operation; repeating -v will increase verbosity
-x -- don't check external links (these are often slow to check)
-a -- don't check name anchors
Arguments:
rooturl -- URL to start checking
(default %(DEFROOT)s)
"""
__version__ = "$Revision: 1.32 $"
import sys
import os
from types import *
import StringIO
import getopt
import pickle
import urllib
import urlparse
import sgmllib
import cgi
import mimetypes
import robotparser
# Extract real version number if necessary
if __version__[0] == '$':
_v = __version__.split()
if len(_v) == 3:
__version__ = _v[1]
# Tunable parameters
DEFROOT = "file:/usr/local/etc/httpd/htdocs/" # Default root URL
CHECKEXT = 1 # Check external references (1 deep)
VERBOSE = 1 # Verbosity level (0-3)
MAXPAGE = 150000 # Ignore files bigger than this
ROUNDSIZE = 50 # Number of links processed per round
DUMPFILE = "@webchecker.pickle" # Pickled checkpoint
AGENTNAME = "webchecker" # Agent name for robots.txt parser
NONAMES = 0 # Force name anchor checking
# Global variables
def main():
checkext = CHECKEXT
verbose = VERBOSE
maxpage = MAXPAGE
roundsize = ROUNDSIZE
dumpfile = DUMPFILE
restart = 0
norun = 0
try:
opts, args = getopt.getopt(sys.argv[1:], 'Rd:m:nqr:t:vxa')
except getopt.error, msg:
sys.stdout = sys.stderr
print msg
print __doc__%globals()
sys.exit(2)
# The extra_roots variable collects extra roots.
extra_roots = []
nonames = NONAMES
for o, a in opts:
if o == '-R':
restart = 1
if o == '-d':
dumpfile = a
if o == '-m':
maxpage = int(a)
if o == '-n':
norun = 1
if o == '-q':
verbose = 0
if o == '-r':
roundsize = int(a)
if o == '-t':
extra_roots.append(a)
if o == '-a':
nonames = not nonames
if o == '-v':
verbose = verbose + 1
if o == '-x':
checkext = not checkext
if verbose > 0:
print AGENTNAME, "version", __version__
if restart:
c = load_pickle(dumpfile=dumpfile, verbose=verbose)
else:
c = Checker()
c.setflags(checkext=checkext, verbose=verbose,
maxpage=maxpage, roundsize=roundsize,
&nb
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