#include <grp.h>
#include <fcntl.h>
#include <getopt.h>
+#include <ctype.h>
#ifdef USE_PAM
#include "pam_defs.h"
#endif /* USE_PAM */
#include "pwio.h"
#include "sgroupio.h"
#include "shadowio.h"
+#include "chkname.h"
/*
* Global variables
*/
/* local function prototypes */
static void usage (void);
-static int add_group (const char *, const char *, gid_t *);
-static int add_user (const char *, const char *, uid_t *, gid_t);
+static int add_group (const char *, const char *, gid_t *, gid_t);
+static int get_uid (const char *, uid_t *);
+static int add_user (const char *, uid_t, gid_t);
static void update_passwd (struct passwd *, const char *);
static int add_passwd (struct passwd *, const char *);
static void process_flags (int argc, char **argv);
/*
* add_group - create a new group or add a user to an existing group
*/
-static int add_group (const char *name, const char *gid, gid_t * ngid)
+static int add_group (const char *name, const char *gid, gid_t *ngid, uid_t uid)
{
- const struct passwd *pwd;
const struct group *grp;
struct group grent;
char *members[1];
- int i;
#ifdef SHADOWGRP
const struct sgrp *sg;
#endif
* Start by seeing if the named group already exists. This will be
* very easy to deal with if it does.
*/
- grp = gr_locate (gid);
+ grp = getgrnam (gid);
+ if (NULL == grp) {
+ grp = gr_locate (gid);
+ }
if (NULL != grp) {
/* The user will use this ID for her primary group */
*ngid = grp->gr_gid;
return 0;
}
- /*
- * The group did not exist, so I try to figure out what the GID is
- * going to be. The gid parameter is probably "", meaning I figure
- * out the GID from the password file. I want the UID and GID to
- * match, unless the GID is already used.
- */
- if (gid[0] == '\0') {
- i = 100;
- for (pw_rewind (); (pwd = pw_next ());) {
- if (pwd->pw_uid >= (unsigned int)i) {
- i = pwd->pw_uid + 1;
- }
- }
- for (gr_rewind (); (grp = gr_next ());) {
- if (grp->gr_gid == (unsigned int)i) {
- i = -1;
- break;
- }
- }
- } else if ((gid[0] >= '0') && (gid[0] <= '9')) {
+ if (isdigit (gid[0])) {
/*
* The GID is a number, which means either this is a brand
* new group, or an existing group.
*/
- i = atoi (gid);
- for (gr_rewind (); (grp = gr_next ());) {
- if (grp->gr_gid == (unsigned int)i) {
- /* The user will use this ID for her
- * primary group */
- *ngid = grp->gr_gid;
- /* Don't check gshadow */
- return 0;
- }
+ char *endptr;
+ long int i = strtoul (gid, &endptr, 10);
+ if ((*endptr != '\0') && (errno != ERANGE)) {
+ fprintf (stderr,
+ _("%s: group ID `%s' is not valid\n"),
+ Prog, gid);
+ return -1;
+ }
+ if ( (getgrgid (i) != NULL)
+ || (gr_locate_gid (i) != NULL)) {
+ /* The user will use this ID for her
+ * primary group */
+ *ngid = i;
+ return 0;
}
+ grent.gr_gid = i;
} else {
- /*
- * The last alternative is that the GID is a name which is
- * not already the name of an existing group, and I need to
- * figure out what group ID that group name is going to
- * have.
+ /* The gid parameter can be "" or a name which is not
+ * already the name of an existing group.
+ * In both cases, figure out what group ID can be used.
*/
- i = -1;
- }
-
- /*
- * If I don't have a group ID by now, I'll go get the next one.
- */
- if (i == -1) {
- for (i = 100, gr_rewind (); (grp = gr_next ());) {
- if (grp->gr_gid >= (unsigned int)i) {
- i = grp->gr_gid + 1;
- }
+ if (find_new_gid(0, &grent.gr_gid, &uid) < 0) {
+ return -1;
}
}
/*
* Now I have all of the fields required to create the new group.
*/
- if (('\0' != gid[0]) && ((gid[0] <= '0') || (gid[0] >= '9'))) {
+ if (('\0' != gid[0]) && (!isdigit (gid[0]))) {
grent.gr_name = xstrdup (gid);
} else {
grent.gr_name = xstrdup (name);
}
+ /* Check if this is a valid group name */
+ if (check_group_name (grent.gr_name) == 0) {
+ fprintf (stderr,
+ _("%s: invalid group name `%s'\n"),
+ Prog, grent.gr_name);
+ free (grent.gr_name);
+ return -1;
+ }
+
grent.gr_passwd = "x"; /* XXX warning: const */
- grent.gr_gid = i;
members[0] = NULL;
grent.gr_mem = members;
#ifdef SHADOWGRP
if (is_shadow_grp) {
- sg = sgr_locate (grp->gr_name);
+ sg = sgr_locate (grent.gr_name);
if (NULL != sg) {
fprintf (stderr,
_("%s: group %s is a shadow group, but does not exist in /etc/group\n"),
- Prog, grp->gr_name);
+ Prog, grent.gr_name);
return -1;
}
}
#ifdef SHADOWGRP
if (is_shadow_grp) {
struct sgrp sgrent;
+ char *admins[1];
sgrent.sg_name = grent.gr_name;
sgrent.sg_passwd = "*"; /* XXX warning: const */
- sgrent.sg_adm = NULL;
+ admins[0] = NULL;
+ sgrent.sg_adm = admins;
sgrent.sg_mem = members;
if (sgr_update (&sgrent) == 0) {
return 0;
}
-/*
- * add_user - create a new user ID
- */
-static int add_user (const char *name, const char *uid, uid_t * nuid, gid_t gid)
-{
+static int get_uid (const char *uid, uid_t *nuid) {
const struct passwd *pwd = NULL;
- struct passwd pwent;
- uid_t i;
/*
* The first guess for the UID is either the numerical UID that the
* caller provided, or the next available UID.
*/
- if ((uid[0] >= '0') && (uid[0] <= '9')) {
- i = atoi (uid);
+ if (isdigit (uid[0])) {
+ char *endptr;
+ long int i = strtoul (uid, &endptr, 10);
+ if ((*endptr != '\0') && (errno != ERANGE)) {
+ fprintf (stderr,
+ _("%s: user ID `%s' is not valid\n"),
+ Prog, uid);
+ return -1;
+ }
+ *nuid = i;
} else {
if ('\0' != uid[0]) {
- pwd = pw_locate (uid);
- }
+ /* local, no need for xgetpwnam */
+ pwd = getpwnam (uid);
+ if (NULL == pwd) {
+ pwd = pw_locate (uid);
+ }
- if (NULL != pwd) {
- i = pwd->pw_uid;
+ if (NULL != pwd) {
+ *nuid = pwd->pw_uid;
+ } else {
+ fprintf (stderr,
+ _("%s: user `%s' does not exist\n"),
+ Prog, uid);
+ return -1;
+ }
} else {
- /* Start with gid, either the specified GID, or an ID
- * greater than all the group and user IDs */
- i = gid;
- for (pw_rewind (); (pwd = pw_next ());) {
- if (pwd->pw_uid >= i) {
- i = pwd->pw_uid + 1;
- }
+ if (find_new_uid (0, nuid, NULL) < 0) {
+ return -1;
}
}
}
+ return 0;
+}
+
+/*
+ * add_user - create a new user ID
+ */
+static int add_user (const char *name, uid_t uid, gid_t gid)
+{
+ struct passwd pwent;
+
+ /* Check if this is a valid user name */
+ if (check_user_name (name) == 0) {
+ fprintf (stderr,
+ _("%s: invalid user name `%s'\n"),
+ Prog, name);
+ return -1;
+ }
+
/*
* I don't want to fill in the entire password structure members
* JUST YET, since there is still more data to be added. So, I fill
* in the parts that I have.
*/
pwent.pw_name = xstrdup (name);
+ pwent.pw_uid = uid;
pwent.pw_passwd = "x"; /* XXX warning: const */
- pwent.pw_uid = i;
pwent.pw_gid = gid;
pwent.pw_gecos = ""; /* XXX warning: const */
pwent.pw_dir = ""; /* XXX warning: const */
pwent.pw_shell = ""; /* XXX warning: const */
- *nuid = i;
return !pw_update (&pwent);
}
sp = spw_locate (pwd->pw_name);
if (NULL != sp) {
spent = *sp;
- spent.sp_pwdp = pw_encrypt (password,
- crypt_make_salt (crypt_method,
- crypt_arg));
+ if ( (crypt_method != NULL)
+ && (0 == strcmp(crypt_method, "NONE"))) {
+ spent.sp_pwdp = (char *)password;
+ } else {
+ const char *salt = crypt_make_salt (crypt_method,
+ crypt_arg);
+ spent.sp_pwdp = pw_encrypt (password, salt);
+ }
return !spw_update (&spent);
}
* shadow password file entry.
*/
spent.sp_namp = pwd->pw_name;
- spent.sp_pwdp = pw_encrypt (password,
- crypt_make_salt (crypt_method, crypt_arg));
+ if ((crypt_method != NULL) && (0 == strcmp(crypt_method, "NONE"))) {
+ pwd->pw_passwd = (char *)password;
+ } else {
+ const char *salt = crypt_make_salt (crypt_method, crypt_arg);
+ spent.sp_pwdp = pw_encrypt (password, salt);
+ }
spent.sp_lstchg = time ((time_t *) 0) / SCALE;
spent.sp_min = getdef_num ("PASS_MIN_DAYS", 0);
/* 10000 is infinity this week */
}
/*
- * Now the fields are processed one by one. The first field
- * to be processed is the group name. A new group will be
+ * First check if we have to create of update an user
+ */
+ pw = pw_locate (fields[0]);
+ /* local, no need for xgetpwnam */
+ if ( (NULL == pw)
+ && (getpwnam (fields[0]) != NULL)) {
+ fprintf (stderr, _("%s: cannot update the entry of user %s (not in the passwd database)\n"), Prog, fields[0]);
+ errors++;
+ continue;
+ }
+
+ if ( (NULL == pw)
+ && (get_uid (fields[2], &uid) != 0)) {
+ fprintf (stderr,
+ _("%s: line %d: can't create user\n"),
+ Prog, line);
+ errors++;
+ continue;
+ }
+
+ /*
+ * Processed is the group name. A new group will be
* created if the group name is non-numeric and does not
* already exist. If the group name is a number (which is not
* an existing GID), a group with the same name as the user
* new group, if that group ID exists, a whole new group ID
* will be made up.
*/
- pw = pw_locate (fields[0]);
if ( (NULL == pw)
- && (add_group (fields[0], fields[3], &gid) != 0)) {
+ && (add_group (fields[0], fields[3], &gid, uid) != 0)) {
fprintf (stderr,
- _("%s: line %d: can't create GID\n"),
+ _("%s: line %d: can't create group\n"),
Prog, line);
errors++;
continue;
* will at least be a (struct passwd) for the user.
*/
if ( (NULL == pw)
- && (add_user (fields[0], fields[2], &uid, gid) != 0)) {
+ && (add_user (fields[0], uid, gid) != 0)) {
fprintf (stderr,
- _("%s: line %d: can't create UID\n"),
+ _("%s: line %d: can't create user\n"),
Prog, line);
errors++;
continue;
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