source3/winbindd/winbindd_group.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Winbind daemon for ntdom nss module
   5
   6    Copyright (C) Tim Potter 2000
   7    Copyright (C) Jeremy Allison 2001.
   8    Copyright (C) Gerald (Jerry) Carter 2003.
   9    Copyright (C) Volker Lendecke 2005
  10
  11    This program is free software; you can redistribute it and/or modify
  12    it under the terms of the GNU General Public License as published by
  13    the Free Software Foundation; either version 3 of the License, or
  14    (at your option) any later version.
  15
  16    This program is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19    GNU General Public License for more details.
  20
  21    You should have received a copy of the GNU General Public License
  22    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  23 */
  24
  25 #include "includes.h"
  26 #include "winbindd.h"
  27
  28 #undef DBGC_CLASS
  29 #define DBGC_CLASS DBGC_WINBIND
  30
  31 /* Fill a grent structure from various other information */
  32
  33 bool fill_grent(TALLOC_CTX *mem_ctx, struct winbindd_gr *gr,
  34                 const char *dom_name, const char *gr_name, gid_t unix_gid)
  35 {
  36         const char *full_group_name;
  37         char *mapped_name = NULL;
  38         NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
  39
  40         nt_status = normalize_name_map(mem_ctx, dom_name, gr_name,
  41                                        &mapped_name);
  42
  43         /* Basic whitespace replacement */
  44         if (NT_STATUS_IS_OK(nt_status)) {
  45                 full_group_name = fill_domain_username_talloc(mem_ctx, dom_name,
  46                                      mapped_name, true);
  47         }
  48         /* Mapped to an aliase */
  49         else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_FILE_RENAMED)) {
  50                 full_group_name = mapped_name;
  51         }
  52         /* no change */
  53         else {
  54                 full_group_name = fill_domain_username_talloc(mem_ctx, dom_name,
  55                                       gr_name, True );
  56         }
  57
  58         if (full_group_name == NULL) {
  59                 return false;
  60         }
  61
  62         gr->gr_gid = unix_gid;
  63
  64         /* Group name and password */
  65
  66         strlcpy(gr->gr_name, full_group_name, sizeof(gr->gr_name));
  67         strlcpy(gr->gr_passwd, "x", sizeof(gr->gr_passwd));
  68
  69         return True;
  70 }
  71
  72 struct getgr_countmem {
  73         int num;
  74         size_t len;
  75 };
  76
  77 static int getgr_calc_memberlen(DATA_BLOB key, void *data, void *priv)
  78 {
  79         struct wbint_Principal *m = talloc_get_type_abort(
  80                 data, struct wbint_Principal);
  81         struct getgr_countmem *buf = (struct getgr_countmem *)priv;
  82
  83         buf->num += 1;
  84         buf->len += strlen(m->name) + 1;
  85         return 0;
  86 }
  87
  88 struct getgr_stringmem {
  89         size_t ofs;
  90         char *buf;
  91 };
  92
  93 static int getgr_unparse_members(DATA_BLOB key, void *data, void *priv)
  94 {
  95         struct wbint_Principal *m = talloc_get_type_abort(
  96                 data, struct wbint_Principal);
  97         struct getgr_stringmem *buf = (struct getgr_stringmem *)priv;
  98         int len;
  99
 100         len = strlen(m->name);
 101
 102         memcpy(buf->buf + buf->ofs, m->name, len);
 103         buf->ofs += len;
 104         buf->buf[buf->ofs] = ',';
 105         buf->ofs += 1;
 106         return 0;
 107 }
 108
 109 NTSTATUS winbindd_print_groupmembers(struct talloc_dict *members,
 110                                      TALLOC_CTX *mem_ctx,
 111                                      int *num_members, char **result)
 112 {
 113         struct getgr_countmem c;
 114         struct getgr_stringmem m;
 115         int res;
 116
 117         c.num = 0;
 118         c.len = 0;
 119
 120         res = talloc_dict_traverse(members, getgr_calc_memberlen, &c);
 121         if (res == -1) {
 122                 DEBUG(5, ("talloc_dict_traverse failed\n"));
 123                 return NT_STATUS_INTERNAL_ERROR;
 124         }
 125
 126         m.ofs = 0;
 127         m.buf = talloc_array(mem_ctx, char, c.len);
 128         if (m.buf == NULL) {
 129                 DEBUG(5, ("talloc failed\n"));
 130                 return NT_STATUS_NO_MEMORY;
 131         }
 132
 133         res = talloc_dict_traverse(members, getgr_unparse_members, &m);
 134         if (res == -1) {
 135                 DEBUG(5, ("talloc_dict_traverse failed\n"));
 136                 TALLOC_FREE(m.buf);
 137                 return NT_STATUS_INTERNAL_ERROR;
 138         }
 139         m.buf[c.len-1] = '\0';
 140
 141         *num_members = c.num;
 142         *result = m.buf;
 143         return NT_STATUS_OK;
 144 }