3 * $Id: name.c,v 1.2 1997/08/04 10:24:24 mdw Exp $
5 * Looking up of names in symbol tables
10 /*----- Licensing notice --------------------------------------------------*
12 * This file is part of `become'
14 * `Become' is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
19 * `Become' is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with `become'; if not, write to the Free Software Foundation,
26 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
29 /*----- Revision history --------------------------------------------------*
32 * Revision 1.2 1997/08/04 10:24:24 mdw
33 * Sources placed under CVS control.
35 * Revision 1.1 1997/07/21 13:47:46 mdw
40 /*----- Header files ------------------------------------------------------*/
42 /* --- ANSI headers --- */
48 /* --- Unix headers --- */
53 # include <rpcsvc/ypclnt.h>
54 # include <rpcsvc/yp_prot.h>
60 /* --- Local headers --- */
69 /*----- Static variables --------------------------------------------------*/
71 static sym_table name__table; /* Symbol table for everything */
73 /*----- Main code ---------------------------------------------------------*/
75 /* --- @name__users@ --- *
81 * Use: Adds all of the users registered with the user database to
82 * the name table. Also adds the users' primary groups.
85 static void name__users(void)
90 userdb_iterateUsers();
91 while ((pw = userdb_nextUser()) != 0) {
96 /* --- First, add the user to the table --- */
98 n = sym_find(&name__table, pw->pw_name, -1, sizeof(name), &f);
100 sym_table *t = xmalloc(sizeof(*t));
102 n->c = class_create(clType_user, t);
105 sym_find(n->c->t, (char *)&u, sizeof(u), sizeof(sym_base), 0);
107 /* --- Now handle the user's default group --- */
109 if ((gr = userdb_groupById(pw->pw_gid)) != 0) {
110 n = sym_find(&name__table, gr->gr_name, -1, sizeof(name), &f);
112 sym_table *t = xmalloc(sizeof(*t));
114 n->c = class_create(clType_user, t);
116 sym_find(n->c->t, (char *)&u, sizeof(u), sizeof(sym_base), 0);
121 /* --- @name__groups@ --- *
127 * Use: Adds users into all of their supplementary groups.
130 static void name__groups(void)
136 userdb_iterateGroups();
137 while ((gr = userdb_nextGroup()) != 0) {
142 /* --- Add the group name to the table --- */
144 n = sym_find(&name__table, gr->gr_name, -1, sizeof(name), &f);
146 sym_table *t = xmalloc(sizeof(*t));
148 n->c = class_create(clType_user, t);
151 /* --- Now add all of the members --- */
153 for (p = gr->gr_mem; *p; p++) {
154 if ((pw = userdb_userByName(*p)) != 0) {
156 sym_find(n->c->t, (char *)&u, sizeof(u), sizeof(sym_base), 0);
162 /* --- @name_init@ --- *
168 * Use: Initialises the name table. Requires the user database to
169 * be populated (see @userdb_local@ and @userdb_yp@).
174 /* --- Initialise the name table --- */
176 sym_createTable(&name__table);
178 /* --- Add everyone into the table --- */
183 /* --- Finally add in the `all' class --- *
185 * Do that now, to prevent it being overwritten by the above.
192 n = sym_find(&name__table, "all", -1, sizeof(name), &f);
199 /* --- @name_reinit@ --- *
205 * Use: Reinitialises the names table. It's cleared and then
206 * initialised with the current user and group ids as for
210 void name_reinit(void)
212 /* --- Empty the symbol table --- */
218 for (sym_createIter(&i, &name__table); (n = sym_next(&i)) != 0; ) {
224 /* --- Destroy and recreate the table --- */
226 sym_destroyTable(&name__table);
230 /* --- @name_find@ --- *
232 * Arguments: @const char *p@ = pointer to name to look up
233 * @unsigned create@ = whether to create the item
234 * @unsigned *f@ = whether the item was created
236 * Returns: Pointer to a @name@ block containing the symbol, or
237 * zero if it wasn't found and we didn't want to create a
240 * Use: Looks up a name in the symbol table and returns the
244 name *name_find(const char *p, unsigned create, unsigned *f)
246 /* --- This is a trivial veneer onto @sym_find@ --- */
248 return (sym_find(&name__table, p, -1, create ? sizeof(name) : 0, f));
251 /* --- @name_dump@ --- *
257 * Use: Dumps a complete listing of the symbol table.
265 trace(TRACE_DEBUG, "name: dumping names");
266 for (sym_createIter(&i, &name__table); (n = sym_next(&i)) != 0; ) {
267 trace(TRACE_DEBUG, "name: dumping `%s'", n->base.name);
272 /*----- Test driver -------------------------------------------------------*/
282 traceon(stdout, TRACE_DEBUG);