torture/nsstest.c

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/* 
   Unix SMB/CIFS implementation.
   nss tester for winbindd
   Copyright (C) Andrew Tridgell 2001
   Copyright (C) Tim Potter 2003
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include "includes.h"

static const char *so_path = "/lib/libnss_winbind.so";
static const char *nss_name = "winbind";
static int nss_errno;
static NSS_STATUS last_error;
static int total_errors;

static void *find_fn(const char *name)
{
        pstring s;
        static void *h;
        void *res;

        pstr_sprintf(s, "_nss_%s_%s", nss_name, name);

        if (!h) {
                h = sys_dlopen(so_path, RTLD_LAZY);
        }
        if (!h) {
                printf("Can't open shared library %s\n", so_path);
                exit(1);
        }
        res = sys_dlsym(h, s);
        if (!res) {
                printf("Can't find function %s\n", s);
                total_errors++;
                return NULL;
        }
        return res;
}

static void report_nss_error(const char *who, NSS_STATUS status)
{
        last_error = status;
        total_errors++;
        printf("ERROR %s: NSS_STATUS=%d  %d (nss_errno=%d)\n", 
               who, status, NSS_STATUS_SUCCESS, nss_errno);
}

static struct passwd *nss_getpwent(void)
{
        NSS_STATUS (*_nss_getpwent_r)(struct passwd *, char *, 
                                      size_t , int *) =
                (NSS_STATUS (*)(struct passwd *, char *,
                                size_t, int *))find_fn("getpwent_r");
        static struct passwd pwd;
        static char buf[1000];
        NSS_STATUS status;

        if (!_nss_getpwent_r)
                return NULL;

        status = _nss_getpwent_r(&pwd, buf, sizeof(buf), &nss_errno);
        if (status == NSS_STATUS_NOTFOUND) {
                return NULL;
        }
        if (status != NSS_STATUS_SUCCESS) {
                report_nss_error("getpwent", status);
                return NULL;
        }
        return &pwd;
}

static struct passwd *nss_getpwnam(const char *name)
{
        NSS_STATUS (*_nss_getpwnam_r)(const char *, struct passwd *, char *, 
                                      size_t , int *) =
                (NSS_STATUS (*)(const char *, struct passwd *, char *,
                                size_t, int *))find_fn("getpwnam_r");
        static struct passwd pwd;
        static char buf[1000];
        NSS_STATUS status;

        if (!_nss_getpwnam_r)
                return NULL;
        
        status = _nss_getpwnam_r(name, &pwd, buf, sizeof(buf), &nss_errno);
        if (status == NSS_STATUS_NOTFOUND) {
                return NULL;
        }
        if (status != NSS_STATUS_SUCCESS) {
                report_nss_error("getpwnam", status);
                return NULL;
        }
        return &pwd;
}

static struct passwd *nss_getpwuid(uid_t uid)
{
        NSS_STATUS (*_nss_getpwuid_r)(uid_t , struct passwd *, char *, 
                                      size_t , int *) =
                (NSS_STATUS (*)(uid_t, struct passwd *, char *,
                                size_t, int *))find_fn("getpwuid_r");
        static struct passwd pwd;
        static char buf[1000];
        NSS_STATUS status;

        if (!_nss_getpwuid_r)
                return NULL;
        
        status = _nss_getpwuid_r(uid, &pwd, buf, sizeof(buf), &nss_errno);
        if (status == NSS_STATUS_NOTFOUND) {
                return NULL;
        }
        if (status != NSS_STATUS_SUCCESS) {
                report_nss_error("getpwuid", status);
                return NULL;
        }
        return &pwd;
}

static void nss_setpwent(void)
{
        NSS_STATUS (*_nss_setpwent)(void) =
                (NSS_STATUS(*)(void))find_fn("setpwent");
        NSS_STATUS status;
        
        if (!_nss_setpwent)
                return;

        status = _nss_setpwent();
        if (status != NSS_STATUS_SUCCESS) {
                report_nss_error("setpwent", status);
        }
}

static void nss_endpwent(void)
{
        NSS_STATUS (*_nss_endpwent)(void) =
                (NSS_STATUS (*)(void))find_fn("endpwent");
        NSS_STATUS status;

        if (!_nss_endpwent)
                return;

        status = _nss_endpwent();
        if (status != NSS_STATUS_SUCCESS) {
                report_nss_error("endpwent", status);
        }
}


static struct group *nss_getgrent(void)
{
        NSS_STATUS (*_nss_getgrent_r)(struct group *, char *, 
                                      size_t , int *) =
                (NSS_STATUS (*)(struct group *, char *,
                                size_t, int *))find_fn("getgrent_r");
        static struct group grp;
        static char *buf;
        static int buflen = 1024;
        NSS_STATUS status;

        if (!_nss_getgrent_r)
                return NULL;

        if (!buf) 
                buf = SMB_MALLOC_ARRAY(char, buflen);

again:  
        status = _nss_getgrent_r(&grp, buf, buflen, &nss_errno);
        if (status == NSS_STATUS_TRYAGAIN) {
                buflen *= 2;
                buf = SMB_REALLOC_ARRAY(buf, char, buflen);
                if (!buf) {
                        return NULL;
                }
                goto again;
        }
        if (status == NSS_STATUS_NOTFOUND) {
                SAFE_FREE(buf);
                return NULL;
        }
        if (status != NSS_STATUS_SUCCESS) {
                report_nss_error("getgrent", status);
                SAFE_FREE(buf);
                return NULL;
        }
        SAFE_FREE(buf);
        return &grp;
}

static struct group *nss_getgrnam(const char *name)
{
        NSS_STATUS (*_nss_getgrnam_r)(const char *, struct group *, char *, 
                                      size_t , int *) =
                (NSS_STATUS (*)(const char *, struct group *, char *,
                                size_t, int *))find_fn("getgrnam_r");
        static struct group grp;
        static char *buf;
        static int buflen = 1000;
        NSS_STATUS status;

        if (!_nss_getgrnam_r)
                return NULL;

        if (!buf) 
                buf = SMB_MALLOC_ARRAY(char, buflen);
again:  
        status = _nss_getgrnam_r(name, &grp, buf, buflen, &nss_errno);
        if (status == NSS_STATUS_TRYAGAIN) {
                buflen *= 2;
                buf = SMB_REALLOC_ARRAY(buf, char, buflen);
                if (!buf) {
                        return NULL;
                }
                goto again;
        }
        if (status == NSS_STATUS_NOTFOUND) {
                SAFE_FREE(buf);
                return NULL;
        }
        if (status != NSS_STATUS_SUCCESS) {
                report_nss_error("getgrnam", status);
                SAFE_FREE(buf);
                return NULL;
        }
        SAFE_FREE(buf);
        return &grp;
}

static struct group *nss_getgrgid(gid_t gid)
{
        NSS_STATUS (*_nss_getgrgid_r)(gid_t , struct group *, char *, 
                                      size_t , int *) =
                (NSS_STATUS (*)(gid_t, struct group *, char *,
                                size_t, int *))find_fn("getgrgid_r");
        static struct group grp;
        static char *buf;
        static int buflen = 1000;
        NSS_STATUS status;
        
        if (!_nss_getgrgid_r)
                return NULL;

        if (!buf) 
                buf = SMB_MALLOC_ARRAY(char, buflen);

again:  
        status = _nss_getgrgid_r(gid, &grp, buf, buflen, &nss_errno);
        if (status == NSS_STATUS_TRYAGAIN) {
                buflen *= 2;
                buf = SMB_REALLOC_ARRAY(buf, char, buflen);
                if (!buf) {
                        return NULL;
                }
                goto again;
        }
        if (status == NSS_STATUS_NOTFOUND) {
                SAFE_FREE(buf);
                return NULL;
        }
        if (status != NSS_STATUS_SUCCESS) {
                report_nss_error("getgrgid", status);
                SAFE_FREE(buf);
                return NULL;
        }
        SAFE_FREE(buf);
        return &grp;
}

static void nss_setgrent(void)
{
        NSS_STATUS (*_nss_setgrent)(void) =
                (NSS_STATUS (*)(void))find_fn("setgrent");
        NSS_STATUS status;

        if (!_nss_setgrent)
                return;

        status = _nss_setgrent();
        if (status != NSS_STATUS_SUCCESS) {
                report_nss_error("setgrent", status);
        }
}

static void nss_endgrent(void)
{
        NSS_STATUS (*_nss_endgrent)(void) =
                (NSS_STATUS (*)(void))find_fn("endgrent");
        NSS_STATUS status;

        if (!_nss_endgrent)
                return;

        status = _nss_endgrent();
        if (status != NSS_STATUS_SUCCESS) {
                report_nss_error("endgrent", status);
        }
}

static int nss_initgroups(char *user, gid_t group, gid_t **groups, long int *start, long int *size)
{
        NSS_STATUS (*_nss_initgroups)(char *, gid_t , long int *,
                                      long int *, gid_t **, long int , int *) = 
                (NSS_STATUS (*)(char *, gid_t, long int *,
                                long int *, gid_t **,
                                long int, int *))find_fn("initgroups_dyn");
        NSS_STATUS status;

        if (!_nss_initgroups) 
                return NSS_STATUS_UNAVAIL;

        status = _nss_initgroups(user, group, start, size, groups, 0, &nss_errno);
        if (status != NSS_STATUS_SUCCESS) {
                report_nss_error("initgroups", status);
        }
        return status;
}

static void print_passwd(struct passwd *pwd)
{
        printf("%s:%s:%lu:%lu:%s:%s:%s\n", 
               pwd->pw_name,
               pwd->pw_passwd,
               (unsigned long)pwd->pw_uid,
               (unsigned long)pwd->pw_gid,
               pwd->pw_gecos,
               pwd->pw_dir,
               pwd->pw_shell);
}

static void print_group(struct group *grp)
{
        int i;
        printf("%s:%s:%lu: ", 
               grp->gr_name,
               grp->gr_passwd,
               (unsigned long)grp->gr_gid);
        
        if (!grp->gr_mem[0]) {
                printf("\n");
                return;
        }
        
        for (i=0; grp->gr_mem[i+1]; i++) {
                printf("%s, ", grp->gr_mem[i]);
        }
        printf("%s\n", grp->gr_mem[i]);
}

static void nss_test_initgroups(char *name, gid_t gid)
{
        long int size = 16;
        long int start = 1;
        gid_t *groups = NULL;
        int i;
        NSS_STATUS status;

        groups = SMB_MALLOC_ARRAY(gid_t, size);
        groups[0] = gid;

        status = nss_initgroups(name, gid, &groups, &start, &size);
        if (status == NSS_STATUS_UNAVAIL) {
                printf("No initgroups fn\n");
                return;
        }

        for (i=0; i<start-1; i++) {
                printf("%lu, ", (unsigned long)groups[i]);
        }
        printf("%lu\n", (unsigned long)groups[i]);
}


static void nss_test_users(void)
{
        struct passwd *pwd;

        nss_setpwent();
        /* loop over all users */
        while ((pwd = nss_getpwent())) {
                printf("Testing user %s\n", pwd->pw_name);
                printf("getpwent:   "); print_passwd(pwd);
                pwd = nss_getpwuid(pwd->pw_uid);
                if (!pwd) {
                        total_errors++;
                        printf("ERROR: can't getpwuid\n");
                        continue;
                }
                printf("getpwuid:   "); print_passwd(pwd);
                pwd = nss_getpwnam(pwd->pw_name);
                if (!pwd) {
                        total_errors++;
                        printf("ERROR: can't getpwnam\n");
                        continue;
                }
                printf("getpwnam:   "); print_passwd(pwd);
                printf("initgroups: "); nss_test_initgroups(pwd->pw_name, pwd->pw_gid);
                printf("\n");
        }
        nss_endpwent();
}

static void nss_test_groups(void)
{
        struct group *grp;

        nss_setgrent();
        /* loop over all groups */
        while ((grp = nss_getgrent())) {
                printf("Testing group %s\n", grp->gr_name);
                printf("getgrent: "); print_group(grp);
                grp = nss_getgrnam(grp->gr_name);
                if (!grp) {
                        total_errors++;
                        printf("ERROR: can't getgrnam\n");
                        continue;
                }
                printf("getgrnam: "); print_group(grp);
                grp = nss_getgrgid(grp->gr_gid);
                if (!grp) {
                        total_errors++;
                        printf("ERROR: can't getgrgid\n");
                        continue;
                }
                printf("getgrgid: "); print_group(grp);
                printf("\n");
        }
        nss_endgrent();
}

static void nss_test_errors(void)
{
        struct passwd *pwd;
        struct group *grp;

        pwd = getpwnam("nosuchname");
        if (pwd || last_error != NSS_STATUS_NOTFOUND) {
                total_errors++;
                printf("ERROR Non existant user gave error %d\n", last_error);
        }

        pwd = getpwuid(0xFFF0);
        if (pwd || last_error != NSS_STATUS_NOTFOUND) {
                total_errors++;
                printf("ERROR Non existant uid gave error %d\n", last_error);
        }

        grp = getgrnam("nosuchgroup");
        if (grp || last_error != NSS_STATUS_NOTFOUND) {
                total_errors++;
                printf("ERROR Non existant group gave error %d\n", last_error);
        }

        grp = getgrgid(0xFFF0);
        if (grp || last_error != NSS_STATUS_NOTFOUND) {
                total_errors++;
                printf("ERROR Non existant gid gave error %d\n", last_error);
        }
}

 int main(int argc, char *argv[])
{       
        if (argc > 1) so_path = argv[1];
        if (argc > 2) nss_name = argv[2];

        nss_test_users();
        nss_test_groups();
        nss_test_errors();

        printf("total_errors=%d\n", total_errors);

        return total_errors;
}

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