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* ; Add 2024 to copyright yearsPo Lu2024-01-021-1/+1
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* ; Add 2023 to copyright years.Eli Zaretskii2023-01-011-1/+1
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* Update from Gnulib by running admin/merge-gnulibPaul Eggert2022-02-231-1/+1
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* ; Add 2022 to copyright years.Eli Zaretskii2022-01-011-1/+1
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* Update from GnulibPaul Eggert2021-10-041-11/+3
| | | | | | | | | | | | | | | | | | Make the following changes by hand, and run 'admin/merge-gnulib'. * .gitignore: Add lib/malloc/*.gl.h. * admin/merge-gnulib: Copy lib/af_alg.h and lib/save-cwd.h directly from Gnulib, without worrying about Gnulib modules, as these files are special cases. (AVOIDED_MODULES): Remove malloc-posix. * lib/malloc.c, lib/realloc.c, m4/malloc.m4, m4/realloc.m4: * m4/year2038.m4: New files, copied from Gnulib. * lib/malloca.c, lib/malloca.h: * m4/close-stream.m4, m4/glibc21.m4, m4/malloca.m4: Remove. These are either no longer present in Gnulib, or are no longer needed by modules that Emacs uses. * oldXMenu/AddPane.c, oldXmenu/Addsel.c: Include XmenuInt.h first; needed for new Gnulib. * src/xmenu.c: Call emacs_abort, not abort.
* Redo emacsclient socket symlink-attack checkingPaul Eggert2021-07-231-0/+510
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * admin/merge-gnulib (GNULIB_MODULES): Add file-has-acl. * lib/file-has-acl.c: New file, copied from Gnulib. * lib/gnulib.mk.in, m4/gnulib-comp.m4: Regenerate. * lib-src/emacsclient.c: Include acl.h, for file_has_acl. (O_PATH): Default to O_SEARCH, which is good enough here. (union local_sockaddr): New type. (socket_status): Remove, replacing with ... (connect_socket): New function. All callers changed. This function checks for ownership and permissions issues with the parent directory of the socket file, instead of checking the owner of the socket (which does not help security). (socknamesize): Move to file scope. (local_sockname): New arg S. No need to pass socknamesize. UID arg is now uid_t. All callers changed. Get file descriptor of parent directory of socket, to foil some symlink attacks. Do not follow symlinks to that directory. (set_local_socket): Create the socket here instead of on each attempt to connect it. Fall back from XDG_RUNTIME_DIR to /tmp only if the former fails due to ENOENT. Adjust permission-failure diagnostic to match changed behavior. This addresses Bug#33847, which complained about emacsclient in a safer XDG environment not connecting to an Emacs server running in a less-safe enviroment outside XDG. The patch fixes a longstanding issue with emacsclient permission checking. It’s ineffective to look at the permission of the socket file itself; on some platforms, these permissions are ignored anyway. What matters are the permissions on the parent directory of the socket file, as these are what make symlink attacks possible. Change the permissions check accordingly, and also refuse to follow symlinks to that parent directory. These changes make it OK for emacsclient to fall back from XDG_RUNTIME_DIR to the traditionally less-safe /tmp/emacsNNNN directories, since /tmp is universally sticky nowadays.
* Merge from gnulibPaul Eggert2015-04-241-919/+0
| | | | | | | | | | | | | | | This incorporates: 2015-04-24 file-has-acl: new module, split from acl 2015-04-24 manywarnings: add GCC 5.1 warnings 2015-04-21 lstat: fix cross-compilation 'ln -s' problem 2015-04-15 qacl: Simplify HP-UX acl_nontrivial check 2015-04-15 acl: On Linux, check for acls without libacl 2015-04-14 tempname: avoid unused parameter warnings (trivial) * lib/acl-internal.c: New file, from gnulib. * lib/file-has-acl.c: Remove; no longer imported from gnulib. * lib/acl-internal.h, lib/gnulib.mk, lib/qcopy-acl.c, lib/tempname.c: * m4/acl.m4, m4/gnulib-comp.m4, m4/lstat.m4, m4/manywarnings.m4: Update from gnulib.
* Merge from gnulib, incorporating:Paul Eggert2015-01-011-1/+1
| | | | 2015-01-01 version-etc: new year
* Update copyright year to 2014 by running admin/update-copyright.Paul Eggert2014-01-011-1/+1
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* Merge from gnulib, incorporating:Paul Eggert2013-12-171-5/+6
| | | | | | | | | 2013-12-17 gettimeofday: port recent C++ fix to Emacs 2013-12-17 gettimeofday: fix C++ crosscompilation 2013-12-17 qacl: port to Windows better * lib/file-has-acl.c, lib/time.in.h, m4/gettimeofday.m4, m4/time_h.m4: Update from gnulib. * lib/gnulib.mk: Regenerate.
* Use Gnulib ACL implementation, for benefit of Solaris etc.Paul Eggert2013-05-071-0/+918
* configure.ac: Remove -with-acl option, since Gnulib does that for us now. (LIBACL_LIBS): Remove; no longer needed. * lib/Makefile.am (CLEANFILES, SUFFIXES): New (empty) macros, for the benefit of the new ACL implementation. * lib/makefile.w32-in (GNULIBOBJS): Add $(BLD)/acl-errno-valid.$(O). ($(BLD)/acl-errno-valid.$(O)): New rule. * lib/acl-errno-valid.c, lib/acl-internal.h, lib/acl.h: * lib/acl_entries.c, lib/errno.in.h, lib/file-has-acl.c: * lib/qcopy-acl.c, lib/qset-acl.c, m4/acl.m4, m4/errno_h.m4: New files, taken from gnulib. * lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate. * admin/merge-gnulib (GNULIB_MODULES): Add qacl. (GNULIB_TOOL_FLAGS): Do not avoid errno. * etc/NEWS: Emacs is no longer limited to POSIX ACLs. --disable-acl, not --without-acl, since we're now using Gnulib's implementation. * nt/config.nt (HAVE_ACL_SET_FILE): Rename from HAVE_POSIX_ACL. * nt/inc/ms-w32.h (EOPNOTSUPP): New macro. * src/Makefile.in (LIB_ACL): New macro. (LIBACL_LIBS): Remove. (LIBES): Use LIB_ACL, not LIBACL_LIBS. * src/fileio.c: Include <acl.h>. Use HAVE_ACL_SET_FILE rather than HAVE_POSIX_ACL. (ACL_NOT_WELL_SUPPORTED): Remove. All uses replaced by !acl_errno_valid. (Fcopy_file) [!WINDOWSNT]: Use qcopy_acl instead of rolling it ourselves. Fixes: debbugs:14295