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         fstring 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                 fill_domain_username(full_group_name, 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                 fstrcpy(full_group_name, mapped_name);
  51         }
  52         /* no change */
  53         else {
  54                 fill_domain_username( full_group_name, dom_name,
  55                                       gr_name, True );
  56         }
  57
  58         gr->gr_gid = unix_gid;
  59
  60         /* Group name and password */
  61
  62         strlcpy(gr->gr_name, full_group_name, sizeof(gr->gr_name));
  63         strlcpy(gr->gr_passwd, "x", sizeof(gr->gr_passwd));
  64
  65         return True;
  66 }
  67
  68 struct getgr_countmem {
  69         int num;
  70         size_t len;
  71 };
  72
  73 static int getgr_calc_memberlen(DATA_BLOB key, void *data, void *priv)
  74 {
  75         struct wbint_Principal *m = talloc_get_type_abort(
  76                 data, struct wbint_Principal);
  77         struct getgr_countmem *buf = (struct getgr_countmem *)priv;
  78
  79         buf->num += 1;
  80         buf->len += strlen(m->name) + 1;
  81         return 0;
  82 }
  83
  84 struct getgr_stringmem {
  85         size_t ofs;
  86         char *buf;
  87 };
  88
  89 static int getgr_unparse_members(DATA_BLOB key, void *data, void *priv)
  90 {
  91         struct wbint_Principal *m = talloc_get_type_abort(
  92                 data, struct wbint_Principal);
  93         struct getgr_stringmem *buf = (struct getgr_stringmem *)priv;
  94         int len;
  95
  96         len = strlen(m->name);
  97
  98         memcpy(buf->buf + buf->ofs, m->name, len);
  99         buf->ofs += len;
 100         buf->buf[buf->ofs] = ',';
 101         buf->ofs += 1;
 102         return 0;
 103 }
 104
 105 NTSTATUS winbindd_print_groupmembers(struct talloc_dict *members,
 106                                      TALLOC_CTX *mem_ctx,
 107                                      int *num_members, char **result)
 108 {
 109         struct getgr_countmem c;
 110         struct getgr_stringmem m;
 111         int res;
 112
 113         c.num = 0;
 114         c.len = 0;
 115
 116         res = talloc_dict_traverse(members, getgr_calc_memberlen, &c);
 117         if (res == -1) {
 118                 DEBUG(5, ("talloc_dict_traverse failed\n"));
 119                 return NT_STATUS_INTERNAL_ERROR;
 120         }
 121
 122         m.ofs = 0;
 123         m.buf = talloc_array(mem_ctx, char, c.len);
 124         if (m.buf == NULL) {
 125                 DEBUG(5, ("talloc failed\n"));
 126                 return NT_STATUS_NO_MEMORY;
 127         }
 128
 129         res = talloc_dict_traverse(members, getgr_unparse_members, &m);
 130         if (res == -1) {
 131                 DEBUG(5, ("talloc_dict_traverse failed\n"));
 132                 TALLOC_FREE(m.buf);
 133                 return NT_STATUS_INTERNAL_ERROR;
 134         }
 135         m.buf[c.len-1] = '\0';
 136
 137         *num_members = c.num;
 138         *result = m.buf;
 139         return NT_STATUS_OK;
 140 }