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adduser,addgroup: introduce and use CONFIG_LAST_ID

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Changes adduser.c, addgroup.c and Config.src to set and use CONFIG_LAST_ID.

function                                             old     new   delta
adduser_main                                         841     865     +24
addgroup_main                                        407     425     +18

Signed-off-by: Tito Ragusa <farmatito@tiscali.it>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Tito Ragusa 2014-01-17 09:17:55 +01:00 committed by Denys Vlasenko
parent 2e66daca65
commit 891b98c9bc
3 changed files with 27 additions and 21 deletions
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11
loginutils/Config.src
View File

@ -118,10 +118,17 @@ config FEATURE_CHECK_NAMES
For compatibility with Samba machine accounts "$" is also supported For compatibility with Samba machine accounts "$" is also supported
at the end of the user or group name. at the end of the user or group name.
config LAST_ID
int "Last valid uid or gid for adduser and addgroup"
depends on ADDUSER || ADDGROUP
default 60000
help
Last valid uid or gid for adduser and addgroup
config FIRST_SYSTEM_ID config FIRST_SYSTEM_ID
int "First valid system uid or gid for adduser and addgroup" int "First valid system uid or gid for adduser and addgroup"
depends on ADDUSER || ADDGROUP depends on ADDUSER || ADDGROUP
range 0 64900 range 0 LAST_ID
default 100 default 100
help help
First valid system uid or gid for adduser and addgroup First valid system uid or gid for adduser and addgroup
@ -129,7 +136,7 @@ config FIRST_SYSTEM_ID
config LAST_SYSTEM_ID config LAST_SYSTEM_ID
int "Last valid system uid or gid for adduser and addgroup" int "Last valid system uid or gid for adduser and addgroup"
depends on ADDUSER || ADDGROUP depends on ADDUSER || ADDGROUP
range 0 64900 range FIRST_SYSTEM_ID LAST_ID
default 999 default 999
help help
Last valid system uid or gid for adduser and addgroup Last valid system uid or gid for adduser and addgroup

13
loginutils/addgroup.c
View File

@ -22,14 +22,16 @@
#if CONFIG_LAST_SYSTEM_ID < CONFIG_FIRST_SYSTEM_ID #if CONFIG_LAST_SYSTEM_ID < CONFIG_FIRST_SYSTEM_ID
#error Bad LAST_SYSTEM_ID or FIRST_SYSTEM_ID in .config #error Bad LAST_SYSTEM_ID or FIRST_SYSTEM_ID in .config
#endif #endif
#if CONFIG_LAST_ID < CONFIG_LAST_SYSTEM_ID
#error Bad LAST_ID or LAST_SYSTEM_ID in .config
#endif
#define OPT_GID (1 << 0) #define OPT_GID (1 << 0)
#define OPT_SYSTEM_ACCOUNT (1 << 1) #define OPT_SYSTEM_ACCOUNT (1 << 1)
/* We assume GID_T_MAX == INT_MAX */
static void xgroup_study(struct group *g) static void xgroup_study(struct group *g)
{ {
unsigned max = INT_MAX; unsigned max = CONFIG_LAST_ID;
/* Make sure gr_name is unused */ /* Make sure gr_name is unused */
if (getgrnam(g->gr_name)) { if (getgrnam(g->gr_name)) {
@ -46,7 +48,6 @@ static void xgroup_study(struct group *g)
max = CONFIG_LAST_SYSTEM_ID; max = CONFIG_LAST_SYSTEM_ID;
} else { } else {
g->gr_gid = CONFIG_LAST_SYSTEM_ID + 1; g->gr_gid = CONFIG_LAST_SYSTEM_ID + 1;
max = 64999;
} }
} }
/* Check if the desired gid is free /* Check if the desired gid is free
@ -125,7 +126,7 @@ int addgroup_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int addgroup_main(int argc UNUSED_PARAM, char **argv) int addgroup_main(int argc UNUSED_PARAM, char **argv)
{ {
unsigned opts; unsigned opts;
unsigned gid = 0; const char *gid = "0";
/* need to be root */ /* need to be root */
if (geteuid()) { if (geteuid()) {
@ -139,7 +140,7 @@ int addgroup_main(int argc UNUSED_PARAM, char **argv)
* addgroup -g num group * addgroup -g num group
* addgroup user group * addgroup user group
* Check for min, max and missing args */ * Check for min, max and missing args */
opt_complementary = "-1:?2:g+"; opt_complementary = "-1:?2";
opts = getopt32(argv, "g:S", &gid); opts = getopt32(argv, "g:S", &gid);
/* move past the commandline options */ /* move past the commandline options */
argv += optind; argv += optind;
@ -175,7 +176,7 @@ int addgroup_main(int argc UNUSED_PARAM, char **argv)
#endif /* ENABLE_FEATURE_ADDUSER_TO_GROUP */ #endif /* ENABLE_FEATURE_ADDUSER_TO_GROUP */
{ {
die_if_bad_username(argv[0]); die_if_bad_username(argv[0]);
new_group(argv[0], gid); new_group(argv[0], xatou_range(gid, 0, CONFIG_LAST_ID));
} }
/* Reached only on success */ /* Reached only on success */
return EXIT_SUCCESS; return EXIT_SUCCESS;

24
loginutils/adduser.c
View File

@ -26,6 +26,10 @@
#if CONFIG_LAST_SYSTEM_ID < CONFIG_FIRST_SYSTEM_ID #if CONFIG_LAST_SYSTEM_ID < CONFIG_FIRST_SYSTEM_ID
#error Bad LAST_SYSTEM_ID or FIRST_SYSTEM_ID in .config #error Bad LAST_SYSTEM_ID or FIRST_SYSTEM_ID in .config
#endif #endif
#if CONFIG_LAST_ID < CONFIG_LAST_SYSTEM_ID
#error Bad LAST_ID or LAST_SYSTEM_ID in .config
#endif
/* #define OPT_HOME (1 << 0) */ /* unused */ /* #define OPT_HOME (1 << 0) */ /* unused */
/* #define OPT_GECOS (1 << 1) */ /* unused */ /* #define OPT_GECOS (1 << 1) */ /* unused */
@ -36,12 +40,11 @@
#define OPT_DONT_MAKE_HOME (1 << 6) #define OPT_DONT_MAKE_HOME (1 << 6)
#define OPT_UID (1 << 7) #define OPT_UID (1 << 7)
/* We assume UID_T_MAX == INT_MAX */
/* remix */ /* remix */
/* recoded such that the uid may be passed in *p */ /* recoded such that the uid may be passed in *p */
static void passwd_study(struct passwd *p) static void passwd_study(struct passwd *p)
{ {
int max = UINT_MAX; int max = CONFIG_LAST_ID;
if (getpwnam(p->pw_name)) { if (getpwnam(p->pw_name)) {
bb_error_msg_and_die("%s '%s' in use", "user", p->pw_name); bb_error_msg_and_die("%s '%s' in use", "user", p->pw_name);
@ -54,7 +57,6 @@ static void passwd_study(struct passwd *p)
max = CONFIG_LAST_SYSTEM_ID; max = CONFIG_LAST_SYSTEM_ID;
} else { } else {
p->pw_uid = CONFIG_LAST_SYSTEM_ID + 1; p->pw_uid = CONFIG_LAST_SYSTEM_ID + 1;
max = 64999;
} }
} }
/* check for a free uid (and maybe gid) */ /* check for a free uid (and maybe gid) */
@ -147,6 +149,7 @@ int adduser_main(int argc UNUSED_PARAM, char **argv)
const char *usegroup = NULL; const char *usegroup = NULL;
char *p; char *p;
unsigned opts; unsigned opts;
char *uid;
#if ENABLE_FEATURE_ADDUSER_LONG_OPTIONS #if ENABLE_FEATURE_ADDUSER_LONG_OPTIONS
applet_long_options = adduser_longopts; applet_long_options = adduser_longopts;
@ -164,16 +167,11 @@ int adduser_main(int argc UNUSED_PARAM, char **argv)
/* at least one and at most two non-option args */ /* at least one and at most two non-option args */
/* disable interactive passwd for system accounts */ /* disable interactive passwd for system accounts */
opt_complementary = "-1:?2:SD:u+"; opt_complementary = "-1:?2:SD";
if (sizeof(pw.pw_uid) == sizeof(int)) { opts = getopt32(argv, "h:g:s:G:DSHu:", &pw.pw_dir, &pw.pw_gecos, &pw.pw_shell, &usegroup, &uid);
opts = getopt32(argv, "h:g:s:G:DSHu:", &pw.pw_dir, &pw.pw_gecos, &pw.pw_shell, &usegroup, &pw.pw_uid); if (opts & OPT_UID)
} else { pw.pw_uid = xatou_range(uid, 0, CONFIG_LAST_ID);
unsigned uid;
opts = getopt32(argv, "h:g:s:G:DSHu:", &pw.pw_dir, &pw.pw_gecos, &pw.pw_shell, &usegroup, &uid);
if (opts & OPT_UID) {
pw.pw_uid = uid;
}
}
argv += optind; argv += optind;
pw.pw_name = argv[0]; pw.pw_name = argv[0];