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         struct winbindd_domain *domain = find_domain_from_name_noinit(dom_name);
  39         NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
  40
  41         nt_status = normalize_name_map(mem_ctx, domain, gr_name,
  42                                        &mapped_name);
  43
  44         /* Basic whitespace replacement */
  45         if (NT_STATUS_IS_OK(nt_status)) {
  46                 fill_domain_username(full_group_name, dom_name,
  47                                      mapped_name, true);
  48         }
  49         /* Mapped to an aliase */
  50         else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_FILE_RENAMED)) {
  51                 fstrcpy(full_group_name, mapped_name);
  52         }
  53         /* no change */
  54         else {
  55                 fill_domain_username( full_group_name, dom_name,
  56                                       gr_name, True );
  57         }
  58
  59         gr->gr_gid = unix_gid;
  60
  61         /* Group name and password */
  62
  63         strlcpy(gr->gr_name, full_group_name, sizeof(gr->gr_name));
  64         strlcpy(gr->gr_passwd, "x", sizeof(gr->gr_passwd));
  65
  66         return True;
  67 }
  68
  69 struct getgr_countmem {
  70         int num;
  71         size_t len;
  72 };
  73
  74 static int getgr_calc_memberlen(DATA_BLOB key, void *data, void *priv)
  75 {
  76         struct wbint_Principal *m = talloc_get_type_abort(
  77                 data, struct wbint_Principal);
  78         struct getgr_countmem *buf = (struct getgr_countmem *)priv;
  79
  80         buf->num += 1;
  81         buf->len += strlen(m->name) + 1;
  82         return 0;
  83 }
  84
  85 struct getgr_stringmem {
  86         size_t ofs;
  87         char *buf;
  88 };
  89
  90 static int getgr_unparse_members(DATA_BLOB key, void *data, void *priv)
  91 {
  92         struct wbint_Principal *m = talloc_get_type_abort(
  93                 data, struct wbint_Principal);
  94         struct getgr_stringmem *buf = (struct getgr_stringmem *)priv;
  95         int len;
  96
  97         len = strlen(m->name);
  98
  99         memcpy(buf->buf + buf->ofs, m->name, len);
 100         buf->ofs += len;
 101         buf->buf[buf->ofs] = ',';
 102         buf->ofs += 1;
 103         return 0;
 104 }
 105
 106 NTSTATUS winbindd_print_groupmembers(struct talloc_dict *members,
 107                                      TALLOC_CTX *mem_ctx,
 108                                      int *num_members, char **result)
 109 {
 110         struct getgr_countmem c;
 111         struct getgr_stringmem m;
 112         int res;
 113
 114         c.num = 0;
 115         c.len = 0;
 116
 117         res = talloc_dict_traverse(members, getgr_calc_memberlen, &c);
 118         if (res == -1) {
 119                 DEBUG(5, ("talloc_dict_traverse failed\n"));
 120                 return NT_STATUS_INTERNAL_ERROR;
 121         }
 122
 123         m.ofs = 0;
 124         m.buf = talloc_array(mem_ctx, char, c.len);
 125         if (m.buf == NULL) {
 126                 DEBUG(5, ("talloc failed\n"));
 127                 return NT_STATUS_NO_MEMORY;
 128         }
 129
 130         res = talloc_dict_traverse(members, getgr_unparse_members, &m);
 131         if (res == -1) {
 132                 DEBUG(5, ("talloc_dict_traverse failed\n"));
 133                 TALLOC_FREE(m.buf);
 134                 return NT_STATUS_INTERNAL_ERROR;
 135         }
 136         m.buf[c.len-1] = '\0';
 137
 138         *num_members = c.num;
 139         *result = m.buf;
 140         return NT_STATUS_OK;
 141 }