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tree-wide: use DIGITS and friends

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This commit is contained in:
Yu Watanabe
2026-03-03 22:18:26 +01:00
committed by Mike Yuan
parent 8e82ea1468
commit 43116c5662
8 changed files with 26 additions and 33 deletions
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src/basic/user-util.c
+9 -10
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@@ -762,18 +762,17 @@ bool valid_user_group_name(const char *u, ValidUserFlags flags) {
* don't allow slashes. */
return false;
if (in_charset(u, "0123456789")) /* Don't allow fully numeric strings, they might be confused
* with UIDs (note that this test is more broad than
* the parse_uid() test above, as it will cover more than
* the 32-bit range, and it will detect 65535 (which is in
* invalid UID, even though in the unsigned 32 bit range) */
if (in_charset(u, DIGITS)) /* Don't allow fully numeric strings, they might be confused with
* UIDs (note that this test is more broad than the parse_uid()
* test above, as it will cover more than the 32-bit range, and it
* will detect 65535 (which is in invalid UID, even though in the
* unsigned 32 bit range) */
return false;
if (u[0] == '-' && in_charset(u + 1, "0123456789")) /* Don't allow negative fully numeric
* strings either. After all some people
* write 65535 as -1 (even though that's
* not even true on 32-bit uid_t
* anyway) */
if (u[0] == '-' && in_charset(u + 1, DIGITS)) /* Don't allow negative fully numeric strings
* either. After all some people write 65535 as
* -1 (even though that's not even true on
* 32-bit uid_t anyway) */
return false;
if (dot_or_dot_dot(u)) /* User names typically become home directory names, and these two are