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* Add a basic seccomp profile to zhmGravatar Benjamin Barenblat2019-12-03
| | | | | | | | | | | | | | | | | | | Prevent zhm from doing some evil things while it runs (e.g., ptracing) by implementing a basic seccomp-bpf filter. The filter still allows a lot of potentially dangerous operations (e.g., unlink(2)), but this is a good start. The filter is based partly on a close reading of the zhm and libhesiod source code and partly on empirical evidence from running zhm under strace. I’ve run zhm with this filter for several days without incident, but some edge cases (e.g., server failover) are still untested. configure decides whether or not to enable seccomp by looking for libseccomp. By default, it treats seccomp as an enhancement and enables it opportunistically. Builders can force seccomp to be enabled or disabled by passing --with-seccomp or --without-seccomp, respectively, to configure.
* Dewarn with -DDEBUGGravatar Jeffrey Hutzelman2013-03-18
| | | | It's sort of nice to be able to build with debugging.
* zhm: Don't send HM_BOOT on new_server if -N usedGravatar Jeffrey Hutzelman2013-02-14
| | | | | | | | | | | If -N was used, then not only should the hostmanager not send an HM_BOOT to the first server it contacts; it should also not send one to other servers it tries when the first one fails to respond. However, it should consistently send HM_BOOT when coming back from a SIGHUP deactivation where it has previously sent HM_FLUSH (if you don't want that behavior, use -f and avoid sending SIGHUP to the hostmanager). This fixes #88
* Clean up warningsGravatar Jeffrey Hutzelman2013-02-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Eliminate compiler warnings due to various issues (listed below). This allows Zephyr to build cleanly under GCC versions ranging from 4.1.0 to 4.7.2 with all of the options shown below: -g -O2 -Wall -Werror -Wno-deprecated-declarations -Wmissing-declarations -Wpointer-arith -Wstrict-prototypes -Wshadow -Wextra -Wno-missing-field-initializers -Wno-unused-parameter and, on recent versions, -Wunreachable-code Test builds were done - On Ubuntu 12.10 (Quantal Quetzal) using both MIT Kerberos 1.10.1 and Heimdal 1.6, without krb4 and both with and without C-Ares and Hesiod - On Fedora 14 using Heimdal 0.6, without C-Ares or Hesiod and both with and without krb4 (KTH Kerberos 1.3rc2) - On Fedora Core 3, Fedora Core 5, Fedora 7, and Fedora 10, using Heimdal 0.6 and without C-Ares, Hesiod, or krb4 It also allows clean builds on Solaris 10 under the Sun Studio 12 (9/07) C compiler with the following options: -g -fd -v -errfmt -errhdr=%user -errtags=yes -errwarn=%all -erroff=E_OLD_STYLE_FUNC_DECL,E_ENUM_TYPE_MISMATCH_ARG,E_ARG_INCOMPATIBLE_WITH_ARG ... and under Solaris 9 with the Sun Forte 7 (3/02) C compiler with the above options and -erroff=E_FUNC_HAS_NO_RETURN_STMT. Solaris builds were done with Heimdal 0.6 and without C-Ares, Hesiod, or krb4. The following types of issues are addressed in this change: - Parameters and local variables with the same names as library functions - Parameters and local variables with the same names as globals - Declarations for exported global variables missing from headers - Prototypes for exported functions missing from headers - Missing 'static' on functions that shouldn't be exported - Old-style function declarations - Duplicate declarations - Type mismatches - Unused variables and functions - Uninitialized variables - Forward references to enums - Necessary header files not included - Violations of the aliasing rules, where GCC was able to detect them - Missing braces on if blocks that might be empty - Attempts to do pointer arithmetic on pointers of type void *, which is not permitted in standard C. - An attempt to pass a function pointer via a void * parameter, which is not permitted in standard C. Instead, we now pass a pointer to a structure, which then contains the required function pointer. - Unnecessary inclusion of <krb5_err.h>, which is already included by <krb5.h> when the former exists, and might not be protected against double inclusion, depending on which com_err was used. - Missing include of <com_err.h>, which was masked by the fact that it is included by headers generated by e2fsprogs compile_et - Use of com_err() with a non-constant value in place of the format string, which in every case was a fixed-size buffer in which a message was built using sprintf(!). Both the calls to sprintf and the fixed-size buffers have been removed, in favor of just letting com_err() do the formatting. - Various cases where X library functions expecting a parameter of type wchar_t * were instead passed a parameter of type XChar2b *. The two types look similar, but are not the same and are _not_ interchangeable. - An overly-simplistic configure test which failed to detect existence of <term.h> on Solaris, due to not including <curses.h>. - Using the wrong type for the flags output of krb5_auth_con_getflags() when building against Heimdal. A configure test is added to detect the correct type.
* New version propagation to replace keyword substitution, part 1Gravatar Karl Ramm2011-11-25
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* It is still not the 80s anymore -- remove all caddr_tsGravatar Karl Ramm2011-02-02
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* (Dumb preprocessor tricks)--Gravatar Karl Ramm2010-12-04
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* stop using MAXHOSTNAMELEN in a variety of places. Also ↵Gravatar Karl Ramm2010-08-24
| | | | nuke-trailing-whitespace.
* passes gcc -Wall with no warnings other than des cryppt C_block sadness and ↵Gravatar Karl Ramm2008-01-21
| | | | getsid problem
* de K&RifyGravatar Karl Ramm2008-01-21
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* debian patch applied and reconciled, version unfinalizedGravatar Karl Ramm2007-07-20
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* include -f flag in usage message.Gravatar Garry Zacheiss2000-05-19
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* Add support for -f to disable client flushing.Gravatar Greg Hudson2000-04-05
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* Some RCS ID cleanup: delete $Log$ and replace other RCS keywords with $Id$.Gravatar Greg Hudson1999-01-22
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* In choose_server(), free the memory allocated by hes_resolve().Gravatar Greg Hudson1998-07-02
| | | | Lots of cleanup necessary for this change.
* Hardcode PIDDIR as /var/athena for now. We'll change it to someGravatar Greg Hudson1998-06-10
| | | | autoconf-specified directory later.
* ZEPHYR_USES_KERBEROS -> HAVE_KRB4; ZEPHYR_USES_HESIOD -> HAVE_HESIODGravatar Greg Hudson1997-10-25
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* From mhpower: avoid possible buffer overflows.Gravatar Greg Hudson1997-09-23
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* Pull in sources from zephyr locker. See /mit/zephyr/repository forGravatar Greg Hudson1997-09-14
| | | | detailed change information.
* Add nofork option (-n).Gravatar Greg Hudson1994-10-31
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* Don't try to declare system functions - let the header files do it.Gravatar Richard Basch1994-02-22
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* Change bcmp/bcopy to memcmp/memcpy [ANSI]Gravatar Richard Basch1993-11-19
| | | | | POSIX port (setsid, getdtablesize->sysconf(_SC_OPEN_MAX)) Corrected a logic bug (missing ++), which could cause an infinite loop.
* Under AIX, allow for full dumps if a SEGV signal is received.Gravatar Richard Basch1993-10-16
| | | | Fixed some uninitialized data and freeing of unallocated memory.
* Better random server choosing code.Gravatar Richard Basch1993-10-13
| | | | Refresh server list upon HUP signal.
* POSIX support.Gravatar John F. Carr1991-06-18
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* Use new conditionals from header files; eliminate explicit use ofGravatar Kenneth G Raeburn1991-03-21
| | | | | default initializers; no default pid file; use new adjust_size macro for size determination.
* Define srandom to be srand48 on macII.Gravatar Kenneth G Raeburn1990-12-21
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* Change NULL to '\0' when used as (char).Gravatar John F. Carr1990-12-21
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* MIPS measures data size like IBM RT.Gravatar Kenneth G Raeburn1990-11-06
| | | | Also, commented out text after #endif.
* Fixed "size" computation for machines other than vaxes.Gravatar John F. Carr1990-02-09
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* parameterize pid fileGravatar John Kohl1989-12-18
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* remove spurious line which caused faults on picky machinesGravatar John Kohl1989-10-27
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* Fix printing of unknown server namesGravatar John Kohl1989-03-23
| | | | avoid div0 and/or random array indexing when j is not initialized
* deal with no primary server by randomly selecting one from the listGravatar John Kohl1988-11-28
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* clean up command-line and non-HESIOD support, so that multipleGravatar John Kohl1988-11-14
| | | | | hosts can appear on command line. Also, make sure primary host only shows up on list once
* fix optind handlingGravatar John Kohl1988-10-25
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* use #define'ed names for zephyr-hm and zephyr-cltGravatar John Kohl1988-10-03
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* merge Ultrix fixes into main branchGravatar John Kohl1988-10-03
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* fix hesiod problemsGravatar John Kohl1988-08-25
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* fix for non-HESIOD caseGravatar John Kohl1988-08-08
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* only format version onceGravatar John Kohl1988-06-25
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* lint fixesGravatar John Kohl1988-06-23
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* set up version number manually.Gravatar John Kohl1988-06-23
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* remove bogus syslog message.Gravatar John Kohl1988-06-03
| | | | Clean up upcase stuff.
* patches for inetd operationGravatar John Kohl1988-06-02
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* fixes for library version 0.2Gravatar John Kohl1988-06-02
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* Changed hesiod to HESIOD to be consistent with athena.Gravatar David C. Jedlinsky1988-03-20
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* Changed "hm.h" to "zhm.h" and bug fixes.Gravatar David C. Jedlinsky1988-02-25
| | | | Interim to 6.0 release.
* Set to send a boot if we are deactivated.Gravatar David C. Jedlinsky1987-10-07
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* Split hm.c into two more subfiles.Gravatar David C. Jedlinsky1987-10-06
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