libreplace: Fix the build on Solaris

[sfrench/samba-autobuild/.git] / nsswitch / winbind_nss_freebsd.c

diff --git a/nsswitch/winbind_nss_freebsd.c b/nsswitch/winbind_nss_freebsd.c
index ac230c8a9a4c39eda4c648a2db6ffdedfb3b8ceb..476349ffbc0d5d6e6f6a96297b79eac68945b630 100644 (file)
--- a/nsswitch/winbind_nss_freebsd.c
+++ b/nsswitch/winbind_nss_freebsd.c
@@ -5,6 +5,7 @@
    routines against Samba winbind/Windows NT Domain
 
    Copyright (C) Aaron Collins 2003
+   Copyright (C) Timur I. Bakeyev 2013
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
@@ -23,7 +24,6 @@
 #include "winbind_client.h"
 
 /* Make sure that the module gets registered needed by freebsd 5.1 */
-
 extern enum nss_status _nss_winbind_getgrent_r(struct group *, char *, size_t,
     int *);
 extern enum nss_status _nss_winbind_getgrnam_r(const char *, struct group *,
@@ -32,6 +32,8 @@ extern enum nss_status _nss_winbind_getgrgid_r(gid_t gid, struct group *, char *
     size_t, int *);
 extern enum nss_status _nss_winbind_setgrent(void);
 extern enum nss_status _nss_winbind_endgrent(void);
+extern enum nss_status _nss_winbind_initgroups_dyn(char *, gid_t, long int *,
+    long int *, gid_t **, long int , int *);
 
 extern enum nss_status _nss_winbind_getpwent_r(struct passwd *, char *, size_t,
     int *);
@@ -41,6 +43,7 @@ extern enum nss_status _nss_winbind_getpwuid_r(gid_t gid, struct passwd *, char
     size_t, int *);
 extern enum nss_status _nss_winbind_setpwent(void);
 extern enum nss_status _nss_winbind_endpwent(void);
+ns_mtab *nss_module_register(const char *, unsigned int *, nss_module_unregister_fn *);
 
 NSS_METHOD_PROTOTYPE(__nss_compat_getgrnam_r);
 NSS_METHOD_PROTOTYPE(__nss_compat_getgrgid_r);
@@ -53,22 +56,91 @@ NSS_METHOD_PROTOTYPE(__nss_compat_getpwuid_r);
 NSS_METHOD_PROTOTYPE(__nss_compat_getpwent_r);
 NSS_METHOD_PROTOTYPE(__nss_compat_setpwent);
 NSS_METHOD_PROTOTYPE(__nss_compat_endpwent);
+NSS_METHOD_PROTOTYPE(__nss_compat_endpwent);
+
+NSS_METHOD_PROTOTYPE(__freebsd_getgroupmembership);
 
 static ns_mtab methods[] = {
 { NSDB_GROUP, "getgrnam_r", __nss_compat_getgrnam_r, _nss_winbind_getgrnam_r },
 { NSDB_GROUP, "getgrgid_r", __nss_compat_getgrgid_r, _nss_winbind_getgrgid_r },
 { NSDB_GROUP, "getgrent_r", __nss_compat_getgrent_r, _nss_winbind_getgrent_r },
-{ NSDB_GROUP, "endgrent",   __nss_compat_setgrent,   _nss_winbind_setgrent },
-{ NSDB_GROUP, "setgrent",   __nss_compat_endgrent,   _nss_winbind_endgrent },
+{ NSDB_GROUP, "setgrent",   __nss_compat_setgrent,   _nss_winbind_setgrent },
+{ NSDB_GROUP, "endgrent",   __nss_compat_endgrent,   _nss_winbind_endgrent },
+{ NSDB_GROUP, "getgroupmembership", __freebsd_getgroupmembership, NULL },
 
 { NSDB_PASSWD, "getpwnam_r", __nss_compat_getpwnam_r, _nss_winbind_getpwnam_r },
 { NSDB_PASSWD, "getpwuid_r", __nss_compat_getpwuid_r, _nss_winbind_getpwuid_r },
 { NSDB_PASSWD, "getpwent_r", __nss_compat_getpwent_r, _nss_winbind_getpwent_r },
-{ NSDB_PASSWD, "endpwent",   __nss_compat_setpwent,   _nss_winbind_setpwent },
-{ NSDB_PASSWD, "setpwent",   __nss_compat_endpwent,   _nss_winbind_endpwent },
+{ NSDB_PASSWD, "setpwent",   __nss_compat_setpwent,   _nss_winbind_setpwent },
+{ NSDB_PASSWD, "endpwent",   __nss_compat_endpwent,   _nss_winbind_endpwent },
 
 };
 
+/* Taken from libc */
+static int
+gr_addgid(gid_t gid, gid_t *groups, int maxgrp, int *grpcnt)
+{
+       int     ret, dupc;
+
+       /* skip duplicates */
+       for (dupc = 0; dupc < MIN(maxgrp, *grpcnt); dupc++) {
+               if (groups[dupc] == gid)
+                       return 1;
+       }
+
+       ret = 1;
+       if (*grpcnt < maxgrp)                   /* add this gid */
+               groups[*grpcnt] = gid;
+       else
+               ret = 0;
+
+       (*grpcnt)++;
+
+       return ret;
+}
+
+/*
+    rv = _nsdispatch(NULL, dtab, NSDB_GROUP, "getgroupmembership",
+                   defaultsrc, uname, agroup, groups, maxgrp, grpcnt);
+*/
+
+int
+__freebsd_getgroupmembership(void *retval, void *mdata, va_list ap)
+{
+       const char      *uname  = va_arg(ap, const char *);
+       gid_t            group  = va_arg(ap, gid_t);
+       gid_t           *groups = va_arg(ap, gid_t *);
+       int              maxgrp = va_arg(ap, int);
+       int             *groupc = va_arg(ap, int *);
+
+       NSS_STATUS ret;
+       long int lcount, lsize;
+       int i, errnop;
+       gid_t *tmpgroups;
+
+       /* Can be realloc() inside _nss_winbind_initgroups_dyn() */
+       if ((tmpgroups=calloc(maxgrp, sizeof(gid_t))) == NULL) {
+               errno = ENOMEM;
+               return NS_TRYAGAIN;
+       }
+
+       lcount = 0;
+       lsize = maxgrp;
+       /* insert primary membership(possibly already there) */
+       gr_addgid(group, groups, maxgrp, groupc);
+       /* Don't limit number of groups, we want to know total size */
+       ret = _nss_winbind_initgroups_dyn(uname, group, &lcount, &lsize,
+               &tmpgroups, 0, &errnop);
+       if (ret == NSS_STATUS_SUCCESS) {
+               /* lcount potentially can be bigger than maxgrp, so would groupc */
+               for (i = 0; i < lcount; i++)
+                        gr_addgid(tmpgroups[i], groups, maxgrp, groupc);
+       }
+       free(tmpgroups);
+       /* Let following nsswitch backend(s) add more groups(?) */
+       return NSS_STATUS_NOTFOUND;
+}
+
 ns_mtab *
 nss_module_register(const char *source, unsigned int *mtabsize,
     nss_module_unregister_fn *unreg)