* NEWS: newusers will behave more like useradd.
* src/newusers.c: The user's ID must be found before the group ID to mimic useradd's behavior choices of UID and GID. * src/newusers.c: Reuse the generic find_new_uid() and find_new_gid() functions. This permits to respect the UID_MIN/UID_MAX and GID_MIN/GID_MAX variables, should * src/newusers.c: Check if the user or group exist using the external databases (with the libc getpwnam/getgrnam functions). Refuse to update an user which exist in an external database but does not exist in the local database. * src/newusers.c: Check the usernames and groupnames with check_user_name() and check_group_name() * src/newusers.c: Use isdigit() for readability. * src/newusers.c: Check if numerical IDs are valid (no remaining chars). * NEWS, src/newusers.c: Fix the support for the NONE crypt method. * src/newusers.c: Fix shadow group support (the list of admins was not defined; it is now set to an empty list).
This commit is contained in:
nekral-guest
parent
65ed10d75c
commit
4e01ea6c33
27
ChangeLog
27
ChangeLog
@ -1,3 +1,30 @@
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2008-02-03 Nicolas François <nicolas.francois@centraliens.net>
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* NEWS: newusers will behave more like useradd.
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* src/newusers.c: The user's ID must be found before the group ID
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to mimic useradd's behavior choices of UID and GID.
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* src/newusers.c: Reuse the generic find_new_uid() and
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find_new_gid() functions. This permits to respect the
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UID_MIN/UID_MAX and GID_MIN/GID_MAX variables, should
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* src/newusers.c: Check if the user or group exist using the
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external databases (with the libc getpwnam/getgrnam functions).
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Refuse to update an user which exist in an external database but
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does not exist in the local database.
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* src/newusers.c: Check the usernames and groupnames with
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check_user_name() and check_group_name()
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* src/newusers.c: Use isdigit() for readability.
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* src/newusers.c: Check if numerical IDs are valid (no remaining
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chars).
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2008-02-03 Nicolas François <nicolas.francois@centraliens.net>
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* NEWS, src/newusers.c: Fix the support for the NONE crypt method.
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2008-02-03 Nicolas François <nicolas.francois@centraliens.net>
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* src/newusers.c: Fix shadow group support (the list of admins was
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not defined; it is now set to an empty list).
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2008-02-03 Nicolas François <nicolas.francois@centraliens.net>
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* NEWS, libmisc/salt.c: Do not seed the random number generator
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3
NEWS
3
NEWS
@ -34,6 +34,9 @@ shadow-4.1.0 -> shadow-4.1.1 UNRELEASED
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because the membership is already set by their primary group.
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* Added support for gshadow.
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* Avoid using the same salt for different passwords.
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* Fix support for the NONE crypt method.
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* newusers will behave more like useradd regarding the choice of UID or
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GID or regarding the validity of user and group names.
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- passwd
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* Make sure that no more than one username argument was provided.
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- pwck
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205
src/newusers.c
205
src/newusers.c
@ -44,6 +44,7 @@
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#include <grp.h>
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#include <fcntl.h>
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#include <getopt.h>
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#include <ctype.h>
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#ifdef USE_PAM
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#include "pam_defs.h"
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#endif /* USE_PAM */
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@ -55,6 +56,7 @@
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#include "pwio.h"
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#include "sgroupio.h"
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#include "shadowio.h"
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#include "chkname.h"
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/*
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* Global variables
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*/
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@ -76,8 +78,9 @@ static pam_handle_t *pamh = NULL;
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/* local function prototypes */
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static void usage (void);
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static int add_group (const char *, const char *, gid_t *);
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static int add_user (const char *, const char *, uid_t *, gid_t);
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static int add_group (const char *, const char *, gid_t *, gid_t);
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static int get_uid (const char *, uid_t *);
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static int add_user (const char *, uid_t, gid_t);
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static void update_passwd (struct passwd *, const char *);
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static int add_passwd (struct passwd *, const char *);
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static void process_flags (int argc, char **argv);
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@ -111,13 +114,11 @@ static void usage (void)
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/*
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* add_group - create a new group or add a user to an existing group
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*/
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static int add_group (const char *name, const char *gid, gid_t * ngid)
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static int add_group (const char *name, const char *gid, gid_t *ngid, uid_t uid)
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{
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const struct passwd *pwd;
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const struct group *grp;
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struct group grent;
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char *members[1];
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int i;
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#ifdef SHADOWGRP
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const struct sgrp *sg;
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#endif
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@ -126,7 +127,10 @@ static int add_group (const char *name, const char *gid, gid_t * ngid)
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* Start by seeing if the named group already exists. This will be
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* very easy to deal with if it does.
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*/
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grp = getgrnam (gid);
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if (NULL == grp) {
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grp = gr_locate (gid);
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}
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if (NULL != grp) {
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/* The user will use this ID for her primary group */
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*ngid = grp->gr_gid;
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@ -134,72 +138,56 @@ static int add_group (const char *name, const char *gid, gid_t * ngid)
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return 0;
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}
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/*
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* The group did not exist, so I try to figure out what the GID is
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* going to be. The gid parameter is probably "", meaning I figure
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* out the GID from the password file. I want the UID and GID to
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* match, unless the GID is already used.
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*/
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if (gid[0] == '\0') {
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i = 100;
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for (pw_rewind (); (pwd = pw_next ());) {
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if (pwd->pw_uid >= (unsigned int)i) {
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i = pwd->pw_uid + 1;
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}
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}
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for (gr_rewind (); (grp = gr_next ());) {
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if (grp->gr_gid == (unsigned int)i) {
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i = -1;
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break;
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}
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}
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} else if ((gid[0] >= '0') && (gid[0] <= '9')) {
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if (isdigit (gid[0])) {
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/*
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* The GID is a number, which means either this is a brand
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* new group, or an existing group.
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*/
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i = atoi (gid);
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for (gr_rewind (); (grp = gr_next ());) {
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if (grp->gr_gid == (unsigned int)i) {
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char *endptr;
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long int i = strtoul (gid, &endptr, 10);
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if ((*endptr != '\0') && (errno != ERANGE)) {
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fprintf (stderr,
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_("%s: group ID `%s' is not valid\n"),
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Prog, gid);
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return -1;
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}
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if ( (getgrgid (i) != NULL)
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|| (gr_locate_gid (i) != NULL)) {
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/* The user will use this ID for her
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* primary group */
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*ngid = grp->gr_gid;
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/* Don't check gshadow */
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*ngid = i;
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return 0;
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}
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}
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grent.gr_gid = i;
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} else {
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/*
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* The last alternative is that the GID is a name which is
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* not already the name of an existing group, and I need to
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* figure out what group ID that group name is going to
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* have.
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/* The gid parameter can be "" or a name which is not
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* already the name of an existing group.
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* In both cases, figure out what group ID can be used.
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*/
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i = -1;
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}
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/*
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* If I don't have a group ID by now, I'll go get the next one.
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*/
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if (i == -1) {
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for (i = 100, gr_rewind (); (grp = gr_next ());) {
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if (grp->gr_gid >= (unsigned int)i) {
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i = grp->gr_gid + 1;
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}
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if (find_new_gid(0, &grent.gr_gid, &uid) < 0) {
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return -1;
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}
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}
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/*
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* Now I have all of the fields required to create the new group.
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*/
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if (('\0' != gid[0]) && ((gid[0] <= '0') || (gid[0] >= '9'))) {
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if (('\0' != gid[0]) && (!isdigit (gid[0]))) {
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grent.gr_name = xstrdup (gid);
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} else {
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grent.gr_name = xstrdup (name);
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}
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/* Check if this is a valid group name */
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if (check_group_name (grent.gr_name) == 0) {
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fprintf (stderr,
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_("%s: invalid group name `%s'\n"),
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Prog, grent.gr_name);
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free (grent.gr_name);
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return -1;
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}
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grent.gr_passwd = "x"; /* XXX warning: const */
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grent.gr_gid = i;
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members[0] = NULL;
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grent.gr_mem = members;
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@ -207,12 +195,12 @@ static int add_group (const char *name, const char *gid, gid_t * ngid)
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#ifdef SHADOWGRP
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if (is_shadow_grp) {
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sg = sgr_locate (grp->gr_name);
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sg = sgr_locate (grent.gr_name);
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if (NULL != sg) {
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fprintf (stderr,
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_("%s: group %s is a shadow group, but does not exist in /etc/group\n"),
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Prog, grp->gr_name);
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Prog, grent.gr_name);
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return -1;
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}
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}
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@ -225,9 +213,11 @@ static int add_group (const char *name, const char *gid, gid_t * ngid)
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#ifdef SHADOWGRP
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if (is_shadow_grp) {
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struct sgrp sgrent;
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char *admins[1];
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sgrent.sg_name = grent.gr_name;
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sgrent.sg_passwd = "*"; /* XXX warning: const */
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sgrent.sg_adm = NULL;
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admins[0] = NULL;
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sgrent.sg_adm = admins;
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sgrent.sg_mem = members;
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if (sgr_update (&sgrent) == 0) {
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@ -242,38 +232,62 @@ static int add_group (const char *name, const char *gid, gid_t * ngid)
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return 0;
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}
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/*
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* add_user - create a new user ID
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*/
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static int add_user (const char *name, const char *uid, uid_t * nuid, gid_t gid)
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{
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static int get_uid (const char *uid, uid_t *nuid) {
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const struct passwd *pwd = NULL;
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struct passwd pwent;
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uid_t i;
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/*
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* The first guess for the UID is either the numerical UID that the
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* caller provided, or the next available UID.
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*/
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if ((uid[0] >= '0') && (uid[0] <= '9')) {
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i = atoi (uid);
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if (isdigit (uid[0])) {
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char *endptr;
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long int i = strtoul (uid, &endptr, 10);
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if ((*endptr != '\0') && (errno != ERANGE)) {
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fprintf (stderr,
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_("%s: user ID `%s' is not valid\n"),
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Prog, uid);
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return -1;
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}
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*nuid = i;
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} else {
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if ('\0' != uid[0]) {
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/* local, no need for xgetpwnam */
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pwd = getpwnam (uid);
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if (NULL == pwd) {
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pwd = pw_locate (uid);
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}
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if (NULL != pwd) {
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i = pwd->pw_uid;
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*nuid = pwd->pw_uid;
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} else {
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/* Start with gid, either the specified GID, or an ID
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* greater than all the group and user IDs */
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i = gid;
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for (pw_rewind (); (pwd = pw_next ());) {
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if (pwd->pw_uid >= i) {
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i = pwd->pw_uid + 1;
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fprintf (stderr,
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_("%s: user `%s' does not exist\n"),
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Prog, uid);
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return -1;
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}
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} else {
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if (find_new_uid (0, nuid, NULL) < 0) {
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return -1;
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}
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}
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}
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return 0;
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}
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/*
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* add_user - create a new user ID
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*/
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static int add_user (const char *name, uid_t uid, gid_t gid)
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{
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struct passwd pwent;
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/* Check if this is a valid user name */
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if (check_user_name (name) == 0) {
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fprintf (stderr,
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_("%s: invalid user name `%s'\n"),
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Prog, name);
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return -1;
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}
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/*
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@ -282,14 +296,13 @@ static int add_user (const char *name, const char *uid, uid_t * nuid, gid_t gid)
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* in the parts that I have.
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*/
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pwent.pw_name = xstrdup (name);
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pwent.pw_uid = uid;
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pwent.pw_passwd = "x"; /* XXX warning: const */
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pwent.pw_uid = i;
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pwent.pw_gid = gid;
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pwent.pw_gecos = ""; /* XXX warning: const */
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pwent.pw_dir = ""; /* XXX warning: const */
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pwent.pw_shell = ""; /* XXX warning: const */
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*nuid = i;
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return !pw_update (&pwent);
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}
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@ -342,9 +355,14 @@ static int add_passwd (struct passwd *pwd, const char *password)
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sp = spw_locate (pwd->pw_name);
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if (NULL != sp) {
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spent = *sp;
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spent.sp_pwdp = pw_encrypt (password,
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crypt_make_salt (crypt_method,
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crypt_arg));
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if ( (crypt_method != NULL)
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&& (0 == strcmp(crypt_method, "NONE"))) {
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spent.sp_pwdp = (char *)password;
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} else {
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const char *salt = crypt_make_salt (crypt_method,
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crypt_arg);
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spent.sp_pwdp = pw_encrypt (password, salt);
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}
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return !spw_update (&spent);
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}
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@ -364,8 +382,12 @@ static int add_passwd (struct passwd *pwd, const char *password)
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* shadow password file entry.
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*/
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spent.sp_namp = pwd->pw_name;
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spent.sp_pwdp = pw_encrypt (password,
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crypt_make_salt (crypt_method, crypt_arg));
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if ((crypt_method != NULL) && (0 == strcmp(crypt_method, "NONE"))) {
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pwd->pw_passwd = (char *)password;
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} else {
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const char *salt = crypt_make_salt (crypt_method, crypt_arg);
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spent.sp_pwdp = pw_encrypt (password, salt);
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}
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spent.sp_lstchg = time ((time_t *) 0) / SCALE;
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spent.sp_min = getdef_num ("PASS_MIN_DAYS", 0);
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/* 10000 is infinity this week */
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@ -684,8 +706,28 @@ int main (int argc, char **argv)
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}
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/*
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* Now the fields are processed one by one. The first field
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* to be processed is the group name. A new group will be
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* First check if we have to create of update an user
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*/
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pw = pw_locate (fields[0]);
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/* local, no need for xgetpwnam */
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if ( (NULL == pw)
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&& (getpwnam (fields[0]) != NULL)) {
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fprintf (stderr, _("%s: cannot update the entry of user %s (not in the passwd database)\n"), Prog, fields[0]);
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errors++;
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continue;
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}
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if ( (NULL == pw)
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&& (get_uid (fields[2], &uid) != 0)) {
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fprintf (stderr,
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_("%s: line %d: can't create user\n"),
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Prog, line);
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errors++;
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continue;
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}
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/*
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* Processed is the group name. A new group will be
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* created if the group name is non-numeric and does not
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* already exist. If the group name is a number (which is not
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* an existing GID), a group with the same name as the user
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@ -696,11 +738,10 @@ int main (int argc, char **argv)
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* new group, if that group ID exists, a whole new group ID
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* will be made up.
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*/
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pw = pw_locate (fields[0]);
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if ( (NULL == pw)
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&& (add_group (fields[0], fields[3], &gid) != 0)) {
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&& (add_group (fields[0], fields[3], &gid, uid) != 0)) {
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fprintf (stderr,
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_("%s: line %d: can't create GID\n"),
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_("%s: line %d: can't create group\n"),
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Prog, line);
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errors++;
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continue;
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@ -714,9 +755,9 @@ int main (int argc, char **argv)
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* will at least be a (struct passwd) for the user.
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||||
*/
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if ( (NULL == pw)
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||||
&& (add_user (fields[0], fields[2], &uid, gid) != 0)) {
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||||
&& (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);
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||||
errors++;
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||||
continue;
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