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shadow/lib
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Alejandro Colomar 6b1d7aafce
lib/chkhash.c: is_valid_hash(): Accept an empty hash 
It represents a passwordless account.
That is discouraged, but accepted.

Fixes: c44f1e096a19 (2025-07-20; "chpasswd: Check hash before write when using -e")
Link: <https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1124835>
Reported-by: Marc 'Zugschlus' Haber <mh+githubvisible@zugschlus.de>
Reported-by: "Serge E. Hallyn" <serge@hallyn.com>
Reported-by: Adam Williamson <awilliam@redhat.com>
Co-authored-by: "Serge E. Hallyn" <serge@hallyn.com>
Signed-off-by: Alejandro Colomar <alx@kernel.org>
Cherry-picked-from: b323141ee90f (2026-01-16; "lib/chkhash.c: is_valid_hash(): Accept an empty hash")
Signed-off-by: Alejandro Colomar <alx@kernel.org>
2026-01-18 22:48:44 +01:00
..
alloc
lib/: Rename XCALLOC() => xcalloc_T()
2025-12-05 21:22:45 -06:00
atoi
lib/: Use non-empty compound literals
2025-12-30 10:07:45 -06:00
fs
lib/: Rename MALLOC() => malloc_T()
2025-12-05 21:22:45 -06:00
search
lib/: Use non-empty compound literals
2025-12-30 10:07:45 -06:00
shadow
Fix documentation style
2025-12-19 16:48:08 +01:00
string
Fix documentation style
2025-12-19 16:48:08 +01:00
time
*/: s/DAY_TO_STR/day_to_str_a/
2025-11-27 20:50:48 -06:00
.indent.pro
[svn-upgrade] Integrating new upstream version, shadow (4.0.8)
2007-10-07 11:46:07 +00:00
addgrps.c
lib/, src/: Reduce scope of local variables
2025-12-28 21:19:22 -06:00
adds.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
adds.h
lib/search/, lib/, src/: Add a type parameter to the type-safe macros
2025-12-05 08:34:32 -06:00
age.c
lib/shadow/, lib/, src/: endsgent(): Move to separate file
2025-10-07 11:03:09 +02:00
agetpass.c
lib/: Rename MALLOC() => malloc_T()
2025-12-05 21:22:45 -06:00
agetpass.h
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
attr.h
lib/attr.h: ATTR_STRING(): Use it also with Clang
2025-11-27 20:35:26 -06:00
audit_help.c
*/: s/SNPRINTF/stprintf_a/
2025-11-27 20:50:48 -06:00
basename.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
bit.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
bit.h
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
btrfs.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
cast.h
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
chkhash.c
lib/chkhash.c: is_valid_hash(): Accept an empty hash
2026-01-18 22:48:44 +01:00
chkhash.h
chpasswd: Check hash before write when using -e
2025-07-20 21:57:14 +02:00
chkname.c
lib/chkname.c, src/: Strictly disallow really bad names
2025-12-25 22:40:55 -06:00
chkname.h
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
chowndir.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
chowntty.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
cleanup_group.c
lib/, src/: Remove unused parameter $2 of audit_logger()
2025-11-06 12:50:49 +01:00
cleanup_user.c
lib/, src/ tests/: Unname unused parameters in callbacks
2025-12-05 09:21:50 -06:00
cleanup.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
commonio.c
lib/: Rename MALLOC() => malloc_T()
2025-12-05 21:22:45 -06:00
commonio.h
lib/, src/: Fix formatting
2025-12-16 23:20:32 +01:00
console.c
lib/, src/: Consistently use sizeof() as if it were a function
2025-11-28 08:39:37 -06:00
copydir.c
lib/, src/: Fix formatting
2025-12-16 23:20:32 +01:00
csrand.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
defines.h
Fix documentation style
2025-12-19 16:48:08 +01:00
encrypt.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
env.c
lib/: Rename XMALLOC() => xmalloc_T()
2025-12-05 21:22:45 -06:00
exit_if_null.c
lib/: exit_if_null(): Add macro to exit(3) on error
2025-10-27 14:32:06 +01:00
exit_if_null.h
lib/, src/: Fix formatting
2025-12-16 23:20:32 +01:00
exitcodes.h
Update licensing info
2021-12-23 19:36:50 -06:00
faillog.h
Update licensing info
2021-12-23 19:36:50 -06:00
failure.c
lib/, src/: Consistently use sizeof() as if it were a function
2025-11-28 08:39:37 -06:00
failure.h
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
fd.c
Adding checks for fd omission
2024-03-10 19:56:40 -05:00
fields.c
lib/, src/: Consistently use NULL with fgets(3)
2025-11-28 08:39:37 -06:00
fields.h
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
find_new_gid.c
Fix documentation style
2025-12-19 16:48:08 +01:00
find_new_sub_gids.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
find_new_sub_uids.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
find_new_uid.c
Fix documentation style
2025-12-19 16:48:08 +01:00
freezero.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
freezero.h
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
get_pid.c
*/: s/SNPRINTF/stprintf_a/
2025-11-27 20:50:48 -06:00
getdef.c
lib/, src/: Consistently use sizeof() as if it were a function
2025-11-28 08:39:37 -06:00
getdef.h
lib/getdef.h: Add missing includes
2025-11-04 10:11:16 +01:00
getgr_nam_gid.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
getrange.c
lib/atoi/, */: Move all a2i() macros to the same file
2025-11-27 20:23:43 -06:00
gettime.c
lib/atoi/, */: Move all a2i() macros to the same file
2025-11-27 20:23:43 -06:00
groupio.c
lib/: Rename CALLOC() => calloc_T()
2025-12-05 21:22:45 -06:00
groupio.h
lib/, src/: add SELinux control flag in gr_unlock()
2025-10-07 11:04:39 +02:00
groupmem.c
lib/: Rename CALLOC() => calloc_T()
2025-12-05 21:22:45 -06:00
hushed.c
lib/, src/: Consistently use NULL with fgets(3)
2025-11-28 08:39:37 -06:00
idmapping.c
lib/: Rename CALLOC() => calloc_T()
2025-12-05 21:22:45 -06:00
idmapping.h
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
isexpired.c
Fix documentation style
2025-12-19 16:48:08 +01:00
limits.c
Fix documentation style
2025-12-19 16:48:08 +01:00
list.c
lib/: Rename XMALLOC() => xmalloc_T()
2025-12-05 21:22:45 -06:00
lockpw.c
lib/, src/: add SELinux control flag in spw_unlock()
2025-10-07 11:04:39 +02:00
log.c
lib/, src/: Add [[gnu::unused]] to parameters used in conditionally-compiled code
2025-12-05 09:21:50 -06:00
logind.c
lib/, src/: Fix formatting
2025-12-16 23:20:32 +01:00
loginprompt.c
lib/, src/ tests/: Unname unused parameters in callbacks
2025-12-05 09:21:50 -06:00
mail.c
lib/, src/, tests/: Move x*() definitions to non-x* header files
2025-10-27 14:32:06 +01:00
Makefile.am
lib/, po/: Remove fgetsx() and fputsx()
2025-12-05 19:23:18 -06:00
motd.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
myname.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
nscd.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
nscd.h
* configure.in, lib/nscd.h, lib/nscd.c: Added --with-nscd flag to
2008-08-30 18:30:36 +00:00
nss.c
lib/: Rename MALLOC() => malloc_T()
2025-12-05 21:22:45 -06:00
obscure.c
lib/obscure.c: Introduce obscure_get_range
2025-12-20 20:22:50 +01:00
pam_defs.h
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
pam_pass_non_interactive.c
lib/: Rename CALLOC() => calloc_T()
2025-12-05 21:22:45 -06:00
pam_pass.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
port.c
*/: s/STRSEP2ARR/strsep2arr_a/
2025-11-27 20:50:48 -06:00
port.h
Update licensing info
2021-12-23 19:36:50 -06:00
prefix_flag.c
lib/prefix_flag.c: Add [[gnu::unused]] to variable used in conditionally-compiled code
2025-12-05 09:21:50 -06:00
prototypes.h
lib/obscure.c: Introduce obscure_get_range
2025-12-20 20:22:50 +01:00
pwauth.c
*/: s/SNPRINTF/stprintf_a/
2025-11-27 20:50:48 -06:00
pwauth.h
lib/, src/, doc/: Remove pw_auth()'s $3 as dead code
2025-02-05 16:58:10 +01:00
pwd2spwd.c
lib/pwd2spwd.c: Set no aging information
2025-12-15 11:38:34 +01:00
pwd_init.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
pwdcheck.c
lib/, src/: Remove unused parameter $3 of passwd_check()
2025-11-06 12:50:49 +01:00
pwio.c
lib/, po/: Remove fgetsx() and fputsx()
2025-12-05 19:23:18 -06:00
pwio.h
lib/, src/: add SELinux control flag in pw_unlock()
2025-10-07 11:04:39 +02:00
pwmem.c
lib/: Rename CALLOC() => calloc_T()
2025-12-05 21:22:45 -06:00
readpassphrase.c
lib/: Use simple assignment instead of memcpy(3)
2025-11-28 13:40:58 -06:00
readpassphrase.h
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
remove_tree.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
root_flag.c
lib/, src/: Use strerrno() instead of its pattern
2025-11-04 10:11:16 +01:00
run_part.c
lib/run_part.c: Fix error message
2025-12-24 14:57:37 +01:00
run_part.h
lib/run_part: Reduce visibility
2024-09-18 14:52:05 +02:00
salt.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
selinux.c
lib/, src/: Use strerrno() instead of its pattern
2025-11-04 10:11:16 +01:00
semanage.c
lib/, src/ tests/: Unname unused parameters in callbacks
2025-12-05 09:21:50 -06:00
setugid.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
setupenv.c
lib/, src/: Consistently use NULL with fgets(3)
2025-11-28 08:39:37 -06:00
sgroupio.c
lib/: Rename CALLOC() => calloc_T()
2025-12-05 21:22:45 -06:00
sgroupio.h
lib/, src/: add SELinux control flag in sgr_unlock()
2025-10-07 11:04:39 +02:00
shadowio.c
lib/, po/: Remove fgetsx() and fputsx()
2025-12-05 19:23:18 -06:00
shadowio.h
lib/, src/: add SELinux control flag in spw_unlock()
2025-10-07 11:04:39 +02:00
shadowlog_internal.h
lib: Fix typo
2024-09-18 14:52:05 +02:00
shadowlog.c
lib: provide default values for shadow_progname/shadow_logfd
2021-12-27 16:28:23 +00:00
shadowlog.h
Drop obsolete prototype for log_dolog()
2022-08-06 11:27:56 -05:00
shadowmem.c
lib/: Rename CALLOC() => calloc_T()
2025-12-05 21:22:45 -06:00
shell.c
*/: s/SNPRINTF/stprintf_a/
2025-11-27 20:50:48 -06:00
sizeof.h
lib/: Use non-empty compound literals
2025-12-30 10:07:45 -06:00
spawn.c
lib/, src/: Use strerrno() instead of its pattern
2025-11-04 10:11:16 +01:00
sssd.c
lib/: Rename MALLOC() => malloc_T()
2025-12-05 21:22:45 -06:00
sssd.h
lib/sssd.h: sssd_flush_cache(): Define as static inline function
2025-12-05 09:21:50 -06:00
strtoday.c
lib/atoi/, */: Move all str2i() macros together with a2i()
2025-11-27 20:23:43 -06:00
sub.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
subordinateio.c
Fix documentation style
2025-12-19 16:48:08 +01:00
subordinateio.h
lib/, src/: add SELinux control flag in sub_gid_unlock()
2025-10-07 11:04:39 +02:00
sulog.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
tcbfuncs.c
lib/tcbfuncs.c: rmdir_leading(): Create string just once
2025-12-06 22:38:06 -06:00
tcbfuncs.h
* lib/tcbfuncs.h: Re-indent.
2010-03-18 19:23:00 +00:00
ttytype.c
lib/, src/: Consistently use NULL with fgets(3)
2025-11-28 08:39:37 -06:00
typetraits.h
lib/: Use non-empty compound literals
2025-12-30 10:07:45 -06:00
tz.c
lib/, src/: Consistently use sizeof() as if it were a function
2025-11-28 08:39:37 -06:00
ulimit.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
user_busy.c
lib/, src/: Consistently use NULL with fgets(3)
2025-11-28 08:39:37 -06:00
utmp.c
lib/: Rename XCALLOC() => xcalloc_T()
2025-12-05 21:22:45 -06:00
valid.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
write_full.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
xgetgrgid.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
xgetgrnam.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
xgetpwnam.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
xgetpwuid.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
xgetspnam.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
xgetXXbyYY.c
lib/xgetXXbyYY.c: include stdint.h for SIZE_MAX
2025-12-13 21:46:32 +01:00
xprefix_getpwnam.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00
yesno.c
*/: Fix including <config.h> as system header
2025-07-16 14:12:40 +02:00