Open Bug 338917 Opened 18 years ago Updated 5 months ago

network.negotiate-auth.trusted-uris user_pref broken


(Firefox :: Settings UI, defect)

3.6 Branch





(Reporter: mba2000, Unassigned)


User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/20060124 Firefox/
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/20060124 Firefox/

If you use something like the following user_pref:

  user_pref("network.negotiate-auth.trusted-uris", ",");

and you're accessing a site in the domain the HttpNegotiateAuth extension does not attempt to perform WWW-Authenticate: Negotiate authentication. If you use just '' it works.

The code in question is here:

At first, I thought I spotted it right away:

431     const char *end = matchHost.EndReading();
432     if (PL_strncasecmp(end - hostLen, hostStart, hostLen) == 0) {
433         // if matchHost ends with host from the base URI, then make sure it is
434         // either an exact match, or prefixed with a dot.  we don't want
435         // "" to match ""
436         if (matchHost.Length() == hostLen ||
437             *(end - hostLen) == '.' ||
438             *(end - hostLen - 1) == '.')
439             return PR_TRUE;

This says the needle must match the haystack exactly or begin with a '.' or the character preceeding the first character must be a '.'. But I tried:,

and it still didn't work. So I'm not sure what the problem.

Note you have to restart the browser after editing prefs.js.

Also, in searching bugzilla I've seen a number of references to this bug that don't quite identify the problem. Meaning there's one about wildcards not working (yeah, no wildcards at work here [1]) and another about Kerberos being broken when in fact it was actually just this bug.


[1] Here's a super simple but suprisingly correct dos style '*' and '?' wildcard  matching function:

Reproducible: Always
Reporter, do you still see this problem with the latest Firefox 2? If not, can you please close this bug as WORKSFORME. Thanks!
Version: unspecified → 1.5.0.x Branch
Though I'm not the original reporter, this fails for me in FF (both Windows and Mac).  There doesn't seem to be a way to use a generic URI and "https://".
This bug was originally reported on Firefox 2.x or older, which is no longer supported and will not be receiving any more updates. I strongly suggest that you update to Firefox 3.6.6 or later, update your plugins (flash, adobe, etc.), and retest in a new profile. If you still see the issue with the updated Firefox, please post here. Otherwise, please close as RESOLVED > WORKSFORME
Whiteboard: [CLOSEME 2010-07-30]
I can confirm that this bug is still present in 3.6.6 (Ubuntu)

The bug is actually pretty simple. In you have:
389 PRBool
390 nsHttpNegotiateAuth::MatchesBaseURI(const nsCSubstring &matchScheme,
391                                     const nsCSubstring &matchHost,
392                                     PRInt32             matchPort,
393                                     const char         *baseStart,
394                                     const char         *baseEnd)
395 {
396     // check if scheme://host:port matches baseURI
398     // parse the base URI
399     const char *hostStart, *schemeEnd = strstr(baseStart, "://");

So you get everything before // as the protocol.

in the same file:
335 PRBool
336 nsHttpNegotiateAuth::TestPref(nsIURI *uri, const char *pref)
368     char *start = hostList, *end;
369     for (;;) {
370         // skip past any whitespace
371         while (*start == ' ' || *start == '\t')
372             ++start;
373         end = strchr(start, ',');
374         if (!end)
375             end = start + strlen(start);
376         if (start == end)
377             break;
378         if (MatchesBaseURI(scheme, host, port, start, end))
379             return PR_TRUE;
380         if (*end == '\0')
381             break;
382         start = end + 1;
383     }

Note that it passes the end pointer, but the first function's strstr doesn't use it. So for an input like ", https://" the first function receives the whole line and decides that the protocol substring is ", https://" (Everything before the //)

The workaround is simple, just enter ",, https://". 

The fix should be simple too:

373         end = strchr(start, ',');
374         if (!end)
375             end = start + strlen(start);
376         if (start == end)
377             break;
387.1 +     bool last = (*end == '\0');
387.2 +     *end = 0;
378         if (MatchesBaseURI(scheme, host, port, start, end))
379             return PR_TRUE;
380   !     if (last)
381             break;
382         start = end + 1;
383     }

That is, make sure to pass a single URI to the match function.
Whiteboard: [CLOSEME 2010-07-30]
Version: 1.5.0.x Branch → 3.6 Branch
Severity: normal → S3

Using Okta as a SSO engine, Firefox before 118 version update was able to successfully logged in via our SSO policy with the urls entered in network.negotiate-auth.trusted-uris setting. Version 118 and onwards it does not work, but conitnues to work with Chrome. So we are assuming there is handoff bug in here somewhere..

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