[PATCH] mkpasswd.c - allows selection of specific user
Mark Bradshaw
bradshaw@staff.crosswalk.com
Mon Oct 15 01:12:00 GMT 2001
Here's the mkpasswd.c patch again, with some fixes suggested by Mathew. I
added an include for lmerr.h, but wasn't sure how to note that (or if to
note that) in the Changelog. Hope I did that right...
This patch adds a -u option that allows for specifying that only info on a
particular user should be displayed. All calls to enum_users now includes
an additional username parameter. If the username is NULL enum_users
functions as it had in the past. If a username is passed in then instead of
calling NetUserEnum it calls NetUserGetInfo, which targets just a particular
user, and displays that user's info.
Also, if -u is specified then the display of the three special users/groups
are suppressed. I did this because I assumed the -u option would be most
used for spot additions to passwd, not complete replacements. In this case
it would be appended (>>) to passwd, and shouldn't display the groups.
I wanted to add a -c option (current user), a la Mathew's patch, but he
seems to be incommunicado. Of course, as he rightly points out, you can
just do mkpasswd -u %USER% if you want that.
Since only one lookup is done when a user is supplied via -u, this should
make it very fast for those with LARGE domains. This patch was tested on
Win2k Pro (not in a domain), Win2k Server (in a domain), and NT 4.0 (BDC).
It worked fine on all three.
==============================
2001-11-20 Mark Bradshaw <bradshaw@staff.crosswalk.com>
* mkpasswd.c: include lmerr.h
(main): New -u option to allow specifying a
specific user. If specified, groups aren't displayed and
output is limited to only the specified user.
(enum_users): If specific user is specified, via -u option,
display only that user's record. With -u use NetUserGetInfo
instead of NetUserEnum.
(load_netapi): Added netusergetinfo.
===============================
--- mkpasswd.c.cvs Sat Oct 20 09:56:09 2001
+++ mkpasswd.c Tue Nov 20 21:43:14 2001
@@ -19,6 +19,7 @@
#include <lmaccess.h>
#include <lmapibuf.h>
#include <sys/fcntl.h>
+#include <lmerr.h>
SID_IDENTIFIER_AUTHORITY sid_world_auth = {SECURITY_WORLD_SID_AUTHORITY};
SID_IDENTIFIER_AUTHORITY sid_nt_auth = {SECURITY_NT_AUTHORITY};
@@ -27,6 +28,7 @@ NET_API_STATUS WINAPI (*netapibufferfree
NET_API_STATUS WINAPI
(*netuserenum)(LPWSTR,DWORD,DWORD,PBYTE*,DWORD,PDWORD,PDWORD,PDWORD);
NET_API_STATUS WINAPI
(*netlocalgroupenum)(LPWSTR,DWORD,PBYTE*,DWORD,PDWORD,PDWORD,PDWORD);
NET_API_STATUS WINAPI (*netgetdcname)(LPWSTR,LPWSTR,PBYTE*);
+NET_API_STATUS WINAPI (*netusergetinfo)(LPWSTR,LPWSTR,DWORD,PBYTE*);
#ifndef min
#define min(a,b) (((a)<(b))?(a):(b))
@@ -48,6 +50,8 @@ load_netapi ()
return FALSE;
if (!(netgetdcname = (void *) GetProcAddress (h, "NetGetDCName")))
return FALSE;
+ if (!(netusergetinfo = (void *) GetProcAddress (h, "NetUserGetInfo")))
+ return FALSE;
return TRUE;
}
@@ -104,7 +108,7 @@ uni2ansi (LPWSTR wcs, char *mbs, int siz
int
enum_users (LPWSTR servername, int print_sids, int print_cygpath,
- const char * passed_home_path, int id_offset)
+ const char * passed_home_path, int id_offset, char
*disp_username)
{
USER_INFO_3 *buffer;
DWORD entriesread = 0;
@@ -112,6 +116,7 @@ enum_users (LPWSTR servername, int print
DWORD resume_handle = 0;
DWORD rc;
char ansi_srvname[256];
+ WCHAR uni_name[512];
if (servername)
uni2ansi (servername, ansi_srvname, sizeof (ansi_srvname));
@@ -120,6 +125,12 @@ enum_users (LPWSTR servername, int print
{
DWORD i;
+ if (disp_username != NULL) {
+ MultiByteToWideChar (CP_ACP, 0, disp_username, -1, uni_name, 512 );
+ rc = netusergetinfo(servername, (LPWSTR) & uni_name, 3, (LPBYTE *)
&buffer );
+ entriesread=1;
+ }
+ else
rc = netuserenum (servername, 3, FILTER_NORMAL_ACCOUNT,
(LPBYTE *) & buffer, 1024,
&entriesread, &totalentries, &resume_handle);
@@ -134,7 +145,9 @@ enum_users (LPWSTR servername, int print
break;
default:
- fprintf (stderr, "NetUserEnum() failed with %ld\n", rc);
+ fprintf (stderr, "NetUserEnum() failed with error %ld.\n", rc);
+ if ( rc == NERR_UserNotFound )
+ fprintf (stderr, "That user doesn't exist.\n");
exit (1);
}
@@ -381,6 +394,7 @@ usage ()
fprintf (stderr, " (this affects ntsec)\n");
fprintf (stderr, " -p,--path-to-home path if user account has no home
dir, use\n");
fprintf (stderr, " path instead of /home/\n");
+ fprintf (stderr, " -u,--username username only return information for
the specified user\n");
fprintf (stderr, " -?,--help displays this message\n\n");
fprintf (stderr, "One of `-l', `-d' or `-g' must be given on NT/W2K.\n");
return 1;
@@ -394,11 +408,12 @@ struct option longopts[] = {
{"no-mount", no_argument, NULL, 'm'},
{"no-sids", no_argument, NULL, 's'},
{"path-to-home",required_argument, NULL, 'p'},
+ {"username",required_argument, NULL, 'u'},
{"help", no_argument, NULL, 'h'},
{0, no_argument, NULL, 0}
};
-char opts[] = "ldo:gsmhp:";
+char opts[] = "ldo:gsmhpu:";
int
main (int argc, char **argv)
@@ -414,6 +429,7 @@ main (int argc, char **argv)
int print_cygpath = 1;
int id_offset = 10000;
int i;
+ char *disp_username = NULL;
char name[256], passed_home_path[MAX_PATH];
DWORD len;
@@ -459,6 +475,9 @@ main (int argc, char **argv)
if (optarg[strlen (optarg)-1] != '/')
strcat (passed_home_path, "/");
break;
+ case 'u':
+ disp_username = optarg;
+ break;
case 'h':
return usage ();
default:
@@ -513,6 +532,7 @@ main (int argc, char **argv)
/*
* Get `Everyone' group
*/
+ if ( disp_username == NULL ) {
print_special (print_sids, &sid_world_auth, 1, SECURITY_WORLD_RID, 0, 0,
0, 0, 0, 0, 0);
/*
* Get `system' group
@@ -526,6 +546,7 @@ main (int argc, char **argv)
if (print_local_groups)
enum_local_groups (print_sids);
+ }
if (print_domain)
{
@@ -541,11 +562,11 @@ main (int argc, char **argv)
exit (1);
}
- enum_users (servername, print_sids, print_cygpath, passed_home_path,
id_offset);
+ enum_users (servername, print_sids, print_cygpath, passed_home_path,
id_offset, disp_username);
}
if (print_local)
- enum_users (NULL, print_sids, print_cygpath, passed_home_path, 0);
+ enum_users (NULL, print_sids, print_cygpath, passed_home_path, 0,
disp_username);
if (servername)
netapibufferfree (servername);
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