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* Null terminate all strings returned by the dummy uname() routine,Mike Pritchard1995-07-312-18/+26
| | | | | | | | | | and make sure that the version string is somewhat sane. This closes out PR#462. Reviewed by: Bruce Evans Notes: svn path=/head/; revision=9817
* bkr() returns an int, and not a pointer. Document this.Joerg Wunsch1995-07-231-3/+3
| | | | | | | | | | | Closes PR #pending/630. Pointed out by: phk Obtained from: Notes: svn path=/head/; revision=9665
* Confirmed to work by: rcarter@geli.com (Russell Carter)Bruce Evans1995-07-221-4/+1
| | | | | | | | Enable xdr_float.c. I believe it works on i386's although it isn't portable enough to be in a machine-independent directory. Notes: svn path=/head/; revision=9645
* Slight adjustment to previous fix for __ivaliduser(). It was checking forPeter Wemm1995-07-161-2/+4
| | | | | | | | | | | the comment before checking for long lines, so there was a possibility that the wrap-around might be used as an exploitable hostname. Reviewed by: Submitted by: Obtained from: Notes: svn path=/head/; revision=9552
* Make ruserok() accept the #-starting comment lines we used to haveJoerg Wunsch1995-07-161-0/+2
| | | | | | | | | in our default /etc/hosts.equiv. Closes PR #conf/620: Default /etc/hosts.equiv... Notes: svn path=/head/; revision=9539
* The declaration of sigaction was missing a `const'.Bruce Evans1995-07-161-1/+1
| | | | Notes: svn path=/head/; revision=9537
* Fix the synopsis of signal() again. Now it is uglier but correct.Bruce Evans1995-07-161-2/+2
| | | | | | | | (Declarations of signal that don't use typedefs can't be formatted in the standard man page form.) Notes: svn path=/head/; revision=9536
* Fix the prototypes for getservby{name,port}().Joerg Wunsch1995-07-091-2/+2
| | | | | | | | | Closes PR #docs/568: minor manpage bug Submitted by: Michael Smith (email address no longer valid) Notes: svn path=/head/; revision=9459
* The ypprot_err() function incorrectly maps YP_NODOM to YPERR_NODOM.Bill Paul1995-07-051-2/+2
| | | | | | | | | | | | | | | Strange as it sounds, it should map to YPERR_DOMAIN instead. The YP_NODOM protocol error code is generally returned by ypserv when you ask it for data from a domain that it doesn't support. By contrast, the YPERR_NODOM error code means 'local domain name not set.' Consequently, this incorrect mapping leads to yperr_string() generating a very confusing error message. YPERR_DOMAIN says 'couldn't bind to a server which serves this domain' which is much closer to the truth. Notes: svn path=/head/; revision=9403
* Do the same sanity checking in _pw_breakout_yp() that we do inBill Paul1995-06-261-16/+19
| | | | | | | | | | _gr_breakout_yp(): if we encounter a NULL pointer generated as the result of a badly formatted NIS passwd entry (e.g. missing fields), we punt and return an error code, thereby silently skipping the bad entry. Notes: svn path=/head/; revision=9332
* Fix for a potential problem reported by a user I bumped into on IRCBill Paul1995-06-261-9/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | last night: _gr_breakout_yp() doesn't check for badly formatted NIS group entries. For example, a bogus entry like this: bootp::user1,user2,user3 will lead to a null pointer dereference and a SEGV (note that the GID field is missing -- this results in one of the strsep(&result, ":") returning NULL). The symtpom of this problem is programs dumping core left and right the moment you add a + entry to /etc/group. Note that while this is similar to an earlier bug, it's caused by a different set of circumstances. The fix is to check for the NULL pointers and have _gr_breakout_yp() punt and return a failure code if it catches one. This is more or less the behavior of SunOS: if a bad NIS group entry is encountered, it's silently ignored. I don't think our standard (non-NIS) group parsing code behaves the same way. It doesn't crash though, so I'm citing the 'it ain't broken, don't fix it' rule and leaving it alone. I'll probably have to add similar checks to _pw_breakout_yp() in getpwent.c to ward off the same problems. It's rare that bad NIS map entries like this occur, but we should handle them gracefully when they do. Notes: svn path=/head/; revision=9331
* Fixes for PR #508 and #509 ('botched 'Bad netgroup' error message' andBill Paul1995-06-231-7/+43
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'cycle in netgroup check too greedy'). PR #508 is apparently due to an inconsistency in the way the 4.4BSD netgroup code deals with bad netgroups. When 4.4BSD code encounters a badly formed netgroup entry (e.g. (somehost,-somedomain), which, because of the missing comma between the '-' and 'somedomain,' has only 2 fields instead of 3), it generates an error message and then bails out without doing any more processing on the netgroup containing the bad entry. Conversely, every other *NIX in the world that usees netgroups just tries to parse the entry as best it can and then silently continues on its way. The result is that two bad things happen: 1) we ignore other valid entries within the netgroup containing the bogus entry, which prevents us from interoperating with other systems that don't behave this way, and 2) by printing an error to stderr from inside libc, we hose certain programs, in this case rlogind. In the problem report, Bill Fenner noted that the 'B' from 'Bad' was missing, and that rlogind exited immediately after generating the error. The missing 'B' is apparently not caused by any problem in getnetgrent.c; more likely it's getting swallowed up by rlogind somehow, and the error message itself causes rlogind to become confused. I was able to duplicate this problem and discovered that running a simple test program on my FreeBSD system resulted in a properly formatted (if confusing) error, whereas triggering the error by trying to rlogin to the machine yielded the missing 'B' problem. Anyway, the fixes for this are as follows: - The error message has been reformatted so that it prints out more useful information (e.g. Bad entry (somehost,-somedomain) in netgroup "foo"). We check for NULL entries so that we don't print '(null)' anymore too. :) - Rearranged things in parse_netgrp() so that we make a best guess at what bad entries are supposed to look like and then continue processing instead of bailing out. - Even though the error message has been cleaned up, it's wrapped inside a #ifdef DEBUG. This way we match the behavior of other systems. Since we now handle the error condition better anyway, this error message becomes less important. PR #507 is another case of inconsistency. The code that handles duplicate/circular netgroup entries isn't really 'too greedy; -- it's just too noisy. If you have a netgroup containing duplicate entries, the code actually does the right thing, but it also generates an error message. As with the 'Bad netgroup' message, spewing this out from inside libc can also hose certain programs (like rlogind). Again, no other system generates an error message in this case. The only change here is to hide the error message inside an #ifdef DEBUG. Like the other message, it's largely superfluous since the code handles the condition correctly. Note that PR #510 (+@netgroup host matching in /etc/hosts.equiv) is still being investigated. I haven't been able to duplicate it myself, and I strongly suspect it to be a configuration problem of some kind. However, I'm leaving all three PRs open until I get 510 resolved just for the sake of paranoia. Notes: svn path=/head/; revision=9287
* Don't cast void functions to void.Jeffrey Hsu1995-06-204-7/+7
| | | | | | | Obtained from: NetBSD commit by jtc on June 16, 1995. Notes: svn path=/head/; revision=9272
* Make _havemaster() use yp_first() (again) instead of yp_order() toBill Paul1995-06-171-2/+6
| | | | | | | | ward off possible NIS+ evil. (I might be overly paranoid with this, but it doesn't hurt, so...) Notes: svn path=/head/; revision=9250
* Add /usr/local/share/nls to default search pathAndrey A. Chernov1995-06-171-2/+2
| | | | Notes: svn path=/head/; revision=9245
* Merge RELENG_2_0_5 into HEADRodney W. Grimes1995-06-111-0/+9
| | | | Notes: svn path=/head/; revision=9202
* Remove trailing whitespace.Rodney W. Grimes1995-05-30128-720/+727
| | | | Notes: svn path=/head/; revision=8870
* Remove trailing whitespace.Rodney W. Grimes1995-05-301-1/+1
| | | | Notes: svn path=/head/; revision=8857
* Add a missing link from the setpgid manpage to the setpgrp manpage.Nate Williams1995-05-271-0/+1
| | | | Notes: svn path=/head/; revision=8786
* Fixed typo.David Greenman1995-05-151-1/+1
| | | | Notes: svn path=/head/; revision=8534
* Parse ^? now, our termcap use it and some termcaps from otherAndrey A. Chernov1995-05-141-1/+5
| | | | | | | systems use it too Notes: svn path=/head/; revision=8522
* Cosmetic changes and paranoia checks:Bill Paul1995-05-031-5/+5
| | | | | | | | | | | | | | | | | | ypbind.c: Make fewer assumtions about the state of the dom_alive and dom_broadcasting flags in roc_received(). If select() fails, use syslog() to report the error rather than perror(). Check that all our malloc()s succeed. Report malloc() failure in ypbindproc_setdom_2() to callers. yplib.c: Use #defined constants in ypbinderr_string() rather than hard-coded values. Notes: svn path=/head/; revision=8245
* Fix bracket error for LogMaskAndrey A. Chernov1995-05-021-1/+1
| | | | | | | Submitted by: Ruslan Belkin <rus@home2.UA.net> Notes: svn path=/head/; revision=8226
* Added function and man page for ftok(3), used in conjunction withJoerg Wunsch1995-05-012-0/+135
| | | | | | | | | | the so-called "System V IPC". Submitted by: jbeukema@HK.Super.Net (John Beukema) Obtained from: Th. Lockert <tholo@sigmasoft.com>, via NetBSD Notes: svn path=/head/; revision=8198
* Small fix for the following problems:Bill Paul1995-04-291-2/+10
| | | | | | | | | | | | | | | | - If you take the wheel entry out of /etc/group and turn on NIS, the '+:*::' line is incorrectly flagged as the entry for wheel (the empty gid section is translated to 0), hence getgrgid() returns '+' as the name of the group instead of 'wheel.' - Using just '+:' as the 'turn on NIS' switch in /etc/group makes getgrgid() dump core because of a null pointer dereference. (Last time I was in here, I foolishly assumed that fixing the core dump problems with getgrnam() and getgrent() would fix getgrgid() too. Silly me.) Notes: svn path=/head/; revision=8172
* ypbind.c: Major overhaul.Bill Paul1995-04-261-55/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Moved to a more client-driven model. We aggressively attempt to keep the default domain bound (as before) but we give up on non-default domains if we lose contact with a server and fail to get a response after one round of broadcasting. This helps drastically reduce the amount of network bandwitdh that ypbind consumes: if a client references the secondary domain at some later point, this will prod ypbind into establishing a new binding anyway, so continuously broadcasting without need is pointless. Note that we still actively seek out a binding for our default domain even if no client program has queried us yet. I'm not exactly sure if this matches SunOS's behavior or not, but I decided to do it this way since we can get into all sorts of trouble if our default domain comes unbound. Even so, we're still much quieter than we used to be. - Removed a bunch of no-longer pertinent comments and a couple of chunks of #ifdef 0'ed code that no longer fit in to the new layout. - Theo deRaadt must have become frustrated with the callback mechanism in clnt_broadcast(), because he shamelessly stole the clnt_broadcast() code right out of the RPC library and hacked it up to suit his needs. (Comments and all! :) I can understand why: clnt_broadcast() blocks while awaiting replies. Changing this behavior requires surgery. However, you can work around this: fork the broadcast into a child process and relay the results back to the parent via a pipe. (Careful obervation has shown that the SunOS ypbind forks children for broadcasting too, though I can only guess what sort of interprocess communication it uses. pipe() seems to do the job well enough.) This may seem like the long way around, but it's not really that hard to implement, and I'd prefer to use documented RPC library functions wherever possible. We're careful to limit the number of simultaneous broadcasters to avoid swamping the system (the current limit is 5). Each clnt_broadcast() call only sends out a small number of packets at increasing intervals. We're also careful not to spawn more than one bradcaster for a given domain. - Used clntudp_bufcreate() and clnt_call() to implement a ping() function for directly querying a particular server so that we can check if it's still alive. This lets me completely remove the old bradcasting code and use actual RPC library calls instead, at the cost of more than a few handfulls of torn-out hair. (Make no mistake folks: I *HATE* RPC.) Currently, the ping interval is one minute. - Fixed another potential 'nfds too big for select()' bug: use _rpc_dtablesize() instead of getdtablesize(). - Quieted gcc -Wall a bit. - Probably a bunch of other stuff that I've forgotten. ypbind.8: - Updated man page to reflect modifications. ypwhich.c: - Small mind-o fix from last time: decode error results from ypbind correctly (*groan*) yplib.c: - same as above - Change behavior of _yp_dobind() a little: if we get back a 'Domain not bound' error for a given domain, retry a few times before giving up and passing the error back to the caller. We have to sleep for a few seconds between tries since the 'Domain not bound' error comes back immediately (by repeatedly looping, we end up pounding on ypbind). We retry at most 20 times at 5 second intervals. This gives us a full minute to get a response. This seems to deviate a bit from SunOS behavior -- it appears to wait forever -- but I don't like the idea of perpetually hanging inside a library call. Note that this should fix the problems some people have with bindings not being established fast enough at boot time; sometimes amd is started in /etc/rc after ypbind has run but before it gets a binding set up. The automounter gets annoyed at this and tends to exit. By pausing ther YP calls until a binding is ready, we avoid this situation. - Another _yp_dobind() change: if we determine that our binding files are unlocked or nonexistent, jump directly to code that pokes ypbind into restablishing the binding. Again, if it fails, we'll time out eventually and return. Notes: svn path=/head/; revision=8091
* Remove setre*id*.Bruce Evans1995-04-251-2/+2
| | | | Notes: svn path=/head/; revision=8060
* Add setreuid/setregid to MAN sectionAndrey A. Chernov1995-04-231-1/+2
| | | | Notes: svn path=/head/; revision=8025
* Add setreuid/setregidAndrey A. Chernov1995-04-231-1/+2
| | | | Notes: svn path=/head/; revision=8021
* Fix history infoAndrey A. Chernov1995-04-232-8/+4
| | | | Notes: svn path=/head/; revision=8020
* in _freecaches(): strdup() allocates us memory -- remember to free it.Bill Paul1995-04-221-10/+18
| | | | Notes: svn path=/head/; revision=8002
* small NIS binding fixes:Bill Paul1995-04-211-1/+26
| | | | | | | | | | | | | | | | | | ypbind.c: if a client program asks ypbind for the name of the server for a particular domain, and there isn't a binding for that domain available yet, ypbind needs to supply a status value along with its failure message. Set yprespbody.ypbind_error before returning from a ypbindproc_domain request. yplib.c: properly handle the error status messages ypbind now has the ability to send us. Add a ypbinderr_string() function to decode the error values. ypwhich.c: handle ypbind errors correctly: yperr_string() can't handle ypbind_status messages -- use ypbinderr_string instead. Notes: svn path=/head/; revision=7982
* Fix bugs in opendir():Bruce Evans1995-04-211-9/+23
| | | | | | | | | | - it succeeded on non-directories (see POSIX 5.1.2.4). - it hung on (non-open) named pipes. - it leaked memory if the second malloc() failed. - it didn't preserve errno across errors in close(). Notes: svn path=/head/; revision=7978
* If locale not available, fallback to strcasecmp, not to strcmpAndrey A. Chernov1995-04-161-2/+2
| | | | Notes: svn path=/head/; revision=7895
* Head off potential core dump in _havemaster() (we don't need to free anyBill Paul1995-04-151-4/+1
| | | | | | | memory here: the underlying YP routines handle this one for us). Notes: svn path=/head/; revision=7834
* Better conformance to SunOS behavior: if we can't match a user to oneBill Paul1995-04-141-2/+8
| | | | | | | | | | | of the plus or minus lists at all, reject him. This lets you create a +@netgroup list of users that you want to admit and reject everybody else. If you end your +@netgroup list with the wildcard line (+:::::::::) then you'll have a +@netgroup list that remaps the specified people but leaves people not in any netgroup unaffected. Notes: svn path=/head/; revision=7815
* Add err_set_file() and err_set_exit() functions to make it possible forGarrett Wollman1995-04-132-18/+64
| | | | | | | | programs which use err(3) to work nicely in a wider range of environments (e.g., dialog). Notes: svn path=/head/; revision=7803
* Add an ethers(3) man page.Bill Paul1995-04-122-3/+190
| | | | Notes: svn path=/head/; revision=7786
* More of the same: we also need to handle multiple domains properlyBill Paul1995-04-091-6/+33
| | | | | | | even if /var/yp/binding/DOMAIN.VERS doesn't exist yet. Notes: svn path=/head/; revision=7722
* Fix behavior of YP library routines in environments with multiple domains,Bill Paul1995-04-091-6/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | where one or more of the non-default domains are not yet bound. If we make a YP request for a domain other than the default domain, and there is no binding for the new domain yet, _yp_dobind() sees that the /var/yp/binding/DOMAIN.VERS file for the unbound domain is not locked (by ypbind) and from this it concludes that the NIS system is dead, so it gives up. This behavior has been changed: before giving up in this case, we now make a second check to see if the binding file for the *default* domain is also not locked. Only if the default domain binding file is also unlocked to we now assume that ypbind has bought the farm and bail out. (Note: this assumes that the user hasn't changed the default domain while ypbind is running.) With this change, _do_ypbind() is allowed to proceed into the next section of code wherein it prods ypbind into establishing a binding for the new domain. This first call times out after ten seconds, after which it should retry and succeed. From then on, the binding for the second domain should be handled normally. Notes: svn path=/head/; revision=7721
* Add missing header referenceAndrey A. Chernov1995-04-091-0/+1
| | | | Notes: svn path=/head/; revision=7690
* Reviewed by: ache and wollman (long ago)Bruce Evans1995-04-072-52/+11
| | | | | | | | | | | | | | | | | | | | | isctype.c: o The tolower() and toupper() functions duplicated too much code and were out of date (surprise). This didn't matter because it was difficult to call them. o Change formatting to be more like that in <ctype.h> (with extra parentheses as in the macros). Perhaps this file should be machine generated or everything should be handled like __tolower() so that no code is repeated. nomacros.c: o Instead of looking at _USE_CTYPE_INLINE_ to see what <ctype.h> has done, set _EXTERNALIZE_CTYPE_INLINES_ to tell <ctype.h> what to do, so that we don't have anything left to do. Note that code is now generated even if inlines are used by default. This allows users to switch to non-inline versions. Notes: svn path=/head/; revision=7656
* Obtained from: 1.1.5 (originally by jtc)Bruce Evans1995-04-061-1/+2
| | | | | | | | | | Fix printf("%g", 0.0) - print "0", not "0.". The previous fixes in this area had one non-cosmetic (non-)change that caused this bug. Bruce Notes: svn path=/head/; revision=7649
* The man page setmode(3) declares `void setmode' when it should beJoerg Wunsch1995-04-051-1/+1
| | | | | | | | | declared `void *setmode'. Submitted by: kargl@troutmask.apl.washington.edu Notes: svn path=/head/; revision=7638
* Add "before inclusion of any header which ... "Andrey A. Chernov1995-04-041-1/+1
| | | | | | | Suggested by: bde Notes: svn path=/head/; revision=7618
* 'Fix' for esoteric misfeature discovered while searching for another bug:Bill Paul1995-04-041-1/+16
| | | | | | | | | | | | | | | | | | | | | | | | | select() returns EINVAL if you try to feed it a value of FD_SETSIZE greater that 256. You can apparently adjust this by specifying a larger value of FD_SETSIZE when configuring your kernel. However, if you set the maximum number of open file descriptors per process to some value greater than the FD_SETSIZE value that select() expects, many selects() within the RPC library code will be botched because _rpc_dtablesize() will return invalid numbers. This is to say that it will return the upper descriptor table size limit which can be much higher than 256. Unless select() is prepared to expect this 'unusually' high value, it will fail. (A good example of this can be seen with NIS enabled: if you type 'unlimit' at the shell prompt and then run any command that does NIS calls, you'll be bombarded with errors from clnttcp_create().) A temporary fix for this is to clamp the value returned by _rpc_dtablesize() at FD_SETSIZE (as defined in <sys/types.h> (256)). I suppose the Right Thing would be to provide some mechanism for select() to dynamically adjust itself to handle FD_SETSIZE values larger than 256, but it's a bit late in the game for that. Hopefully 256 file descriptors will be enough to keep RPC happy for now. Notes: svn path=/head/; revision=7616
* getpwent.c: fix problem with emacs dumping core when NIS is enabled. AlsoBill Paul1995-04-043-21/+34
| | | | | | | | | | | add #includes for YP headers when compiling with -DYP to avoid some implicit declarations. getgrent.c & getnetgrent.c: add some #includes to avoid implicit declarations of YP functions. Notes: svn path=/head/; revision=7615
* Properly describe how to expand default limit of handled descriptorsAndrey A. Chernov1995-04-041-1/+6
| | | | Notes: svn path=/head/; revision=7609
* Submitted by: Sebastian StrollowBill Paul1995-04-021-4/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Obtained from: Casper H. Dik (by vay of Usenet) Small patch to help improve NIS rebinding times (among other things): >From: casper@fwi.uva.nl (Casper H.S. Dik) >Newsgroups: comp.sys.sun.misc,comp.sys.sun.admin >Subject: FIX for slow rebinding of NIS. >Summary: a small change in libc makes life with NIS a lot easier. >Message-ID: <1992Jan17.173905.11727@fwi.uva.nl> >Date: 17 Jan 92 17:39:05 GMT >Sender: news@fwi.uva.nl >Organization: FWI, University of Amsterdam >Lines: 138 >Nntp-Posting-Host: halo.fwi.uva.nl Have you been plagued by long waits when your NIS server is rebooted? READ ON! Sun has a patch, but the README says: ********************* WARNING ****************************** This is a new version of ypbind that never uses the NIS binding file to cache the servers binding. This will have the effect of fixing the current symptom. However, it might degrade the overall performance of the system when the server is available. This is most likely to happen on an overloaded server, which will cause the network to produce a broadcast storm. ************************************************************* Therefor, I have produced another fix. o What goes wrong. When the NIS server is rebooted, ypserv will obtain different ports to listen for RPC requests. All clients will continue to use the old binding they obtained earlier. The NIS server will send ICMP dst unreachable messages for the RPC requests that arrive at the old port. These ICMPs are dropped on the floor and the client code will continue sending the requests until the timer has expired. The small fix at the end of this message will pick up these ICMP messages and deliver them to the RPC layer. o Before and after. I've tested this on some machines and this is the result: (kill and restart ypserv on the server) original% time ypmatch user passwd user:.... 0.040u 0.090s 2:35.64 0.0% 0+126k 0+0io 0pf+0w (155 seconds elapsed time) fixedhost% time ypmatch user passwd user:.... 0.050u 0.050s 0:10.20 0.9% 0+136k 0+0io 0pf+0w (10 seconds elapsed time) Rebinding is almost instantaneous. o Other benefits. RPC calls that use UDP as transport will no longer time out but will abort much sooner. (E.g., the remote host is unreachable or 111/udp is filtered by an intermediate router) Notes: svn path=/head/; revision=7599
* Fix xdr_ypmap_parms() so that it agrees with xdr_domainname(), xdr_peername()Bill Paul1995-04-021-4/+4
| | | | | | | and friends. Notes: svn path=/head/; revision=7597
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