a5c5dc6f0
Denys Vlasenko
2019-06-07
Subject
passwd: do not set 0 as date of last password change, closes 11951
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libbb/update_passwd.c+7 -1
| @@ -270,10 +270,16 @@ int FAST_FUNC update_passwd(const char *filename, | |
| if (shadow && *cp == ':') { | |
| /* /etc/shadow's field 3 (passwd change date) needs updating */ | |
| /* move past old change date */ | |
| + | unsigned time_days = (unsigned long)(time(NULL)) / (24*60*60); |
| + | |
| + | if (time_days == 0) { |
| + | /* 0 as change date has special meaning, avoid it */ |
| + | time_days = 1; |
| + | } |
| cp = strchrnul(cp + 1, ':'); | |
| /* "name:" + "new_passwd" + ":" + "change date" + ":rest of line" */ | |
| fprintf(new_fp, "%s%s:%u%s\n", name_colon, new_passwd, | |
| - | (unsigned)(time(NULL)) / (24*60*60), cp); |
| + | time_days, cp); |
| } else { | |
| /* "name:" + "new_passwd" + ":rest of line" */ | |
| fprintf(new_fp, "%s%s%s\n", name_colon, new_passwd, cp); | |