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;
  39         NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
  40
  41         domain = find_domain_from_name_noinit(dom_name);
  42         if (domain == NULL) {
  43                 DEBUG(0, ("Failed to find domain '%s'. "
  44                           "Check connection to trusted domains!\n",
  45                           dom_name));
  46                 return false;
  47         }
  48
  49         nt_status = normalize_name_map(mem_ctx, domain, gr_name,
  50                                        &mapped_name);
  51
  52         /* Basic whitespace replacement */
  53         if (NT_STATUS_IS_OK(nt_status)) {
  54                 fill_domain_username(full_group_name, dom_name,
  55                                      mapped_name, true);
  56         }
  57         /* Mapped to an aliase */
  58         else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_FILE_RENAMED)) {
  59                 fstrcpy(full_group_name, mapped_name);
  60         }
  61         /* no change */
  62         else {
  63                 fill_domain_username( full_group_name, dom_name,
  64                                       gr_name, True );
  65         }
  66
  67         gr->gr_gid = unix_gid;
  68
  69         /* Group name and password */
  70
  71         strlcpy(gr->gr_name, full_group_name, sizeof(gr->gr_name));
  72         strlcpy(gr->gr_passwd, "x", sizeof(gr->gr_passwd));
  73
  74         return True;
  75 }
  76
  77 struct getgr_countmem {
  78         int num;
  79         size_t len;
  80 };
  81
  82 static int getgr_calc_memberlen(DATA_BLOB key, void *data, void *priv)
  83 {
  84         struct wbint_Principal *m = talloc_get_type_abort(
  85                 data, struct wbint_Principal);
  86         struct getgr_countmem *buf = (struct getgr_countmem *)priv;
  87
  88         buf->num += 1;
  89         buf->len += strlen(m->name) + 1;
  90         return 0;
  91 }
  92
  93 struct getgr_stringmem {
  94         size_t ofs;
  95         char *buf;
  96 };
  97
  98 static int getgr_unparse_members(DATA_BLOB key, void *data, void *priv)
  99 {
 100         struct wbint_Principal *m = talloc_get_type_abort(
 101                 data, struct wbint_Principal);
 102         struct getgr_stringmem *buf = (struct getgr_stringmem *)priv;
 103         int len;
 104
 105         len = strlen(m->name);
 106
 107         memcpy(buf->buf + buf->ofs, m->name, len);
 108         buf->ofs += len;
 109         buf->buf[buf->ofs] = ',';
 110         buf->ofs += 1;
 111         return 0;
 112 }
 113
 114 NTSTATUS winbindd_print_groupmembers(struct talloc_dict *members,
 115                                      TALLOC_CTX *mem_ctx,
 116                                      int *num_members, char **result)
 117 {
 118         struct getgr_countmem c;
 119         struct getgr_stringmem m;
 120         int res;
 121
 122         c.num = 0;
 123         c.len = 0;
 124
 125         res = talloc_dict_traverse(members, getgr_calc_memberlen, &c);
 126         if (res == -1) {
 127                 DEBUG(5, ("talloc_dict_traverse failed\n"));
 128                 return NT_STATUS_INTERNAL_ERROR;
 129         }
 130
 131         m.ofs = 0;
 132         m.buf = talloc_array(mem_ctx, char, c.len);
 133         if (m.buf == NULL) {
 134                 DEBUG(5, ("talloc failed\n"));
 135                 return NT_STATUS_NO_MEMORY;
 136         }
 137
 138         res = talloc_dict_traverse(members, getgr_unparse_members, &m);
 139         if (res == -1) {
 140                 DEBUG(5, ("talloc_dict_traverse failed\n"));
 141                 TALLOC_FREE(m.buf);
 142                 return NT_STATUS_INTERNAL_ERROR;
 143         }
 144         m.buf[c.len-1] = '\0';
 145
 146         *num_members = c.num;
 147         *result = m.buf;
 148         return NT_STATUS_OK;
 149 }