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This commit is contained in:
Todd C. Miller
1999-07-22 13:12:27 +00:00
parent 4c7239fd97
commit 7126759483
2 changed files with 190 additions and 243 deletions
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317
sudo.tab.c
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@@ -17,32 +17,34 @@ static char yyrcsid[]
#define YYRECOVERING() (yyerrflag!=0)
#define YYPREFIX "yy"
#line 2 "parse.yacc"
/*
* CU sudo version 1.6
* Copyright (c) 1996, 1998, 1999 Todd C. Miller <Todd.Miller@courtesan.com>
* Copyright (c) 1996, 1998, 1999 Todd C. Miller <Todd.Miller@courtesan.com>
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 1, or (at your option)
* any later version.
* This code is derived from software contributed by Chris Jepeway
* <jepeway@cs.utk.edu>
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Please send bugs, changes, problems to sudo-bugs@courtesan.com
*
*******************************************************************
*
* parse.yacc -- yacc parser and alias manipulation routines for sudo.
*
* Chris Jepeway <jepeway@cs.utk.edu>
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
@@ -70,6 +72,7 @@ static char yyrcsid[]
#endif /* HAVE_LSEARCH */
#include "sudo.h"
#include "parse.h"
#ifndef HAVE_LSEARCH
#include "emul/search.h"
@@ -174,7 +177,7 @@ void
yyerror(s)
char *s;
{
/* save the line the first error occured on */
/* Save the line the first error occured on. */
if (errorlineno == -1)
errorlineno = sudolineno ? sudolineno - 1 : 0;
#ifndef TRACELEXER
@@ -185,14 +188,14 @@ yyerror(s)
#endif
parse_error = TRUE;
}
#line 172 "parse.yacc"
#line 175 "parse.yacc"
typedef union {
char *string;
int BOOLEAN;
struct sudo_command command;
int tok;
} YYSTYPE;
#line 196 "sudo.tab.c"
#line 199 "sudo.tab.c"
#define ALIAS 257
#define NTWKADDR 258
#define FQHOST 259
@@ -497,8 +500,7 @@ short *yyss;
short *yysslim;
YYSTYPE *yyvs;
int yystacksize;
#line 666 "parse.yacc"
#line 668 "parse.yacc"
typedef struct {
int type;
@@ -511,13 +513,9 @@ size_t naliases = 0;
size_t nslots = 0;
/**********************************************************************
*
* aliascmp()
*
* This function compares two aliasinfo structures.
/*
* Compare two aliasinfo structures, strcmp() style.
*/
static int
aliascmp(a1, a2)
const VOID *a1, *a2;
@@ -534,14 +532,9 @@ aliascmp(a1, a2)
return(r);
}
/**********************************************************************
*
* genaliascmp()
*
* This function compares two generic_alias structures.
/*
* Compare two generic_alias structures, strcmp() style.
*/
static int
genaliascmp(entry, key)
const VOID *entry, *key;
@@ -553,14 +546,9 @@ genaliascmp(entry, key)
}
/**********************************************************************
*
* add_alias()
*
* This function adds the named alias of the specified type to the
* aliases list.
/*
* Adds the named alias of the specified type to the aliases list.
*/
static int
add_alias(alias, type)
char *alias;
@@ -600,14 +588,9 @@ add_alias(alias, type)
return(ok);
}
/**********************************************************************
*
* find_alias()
*
* This function searches for the named alias of the specified type.
/*
* Searches for the named alias of the specified type.
*/
static int
find_alias(alias, type)
char *alias;
@@ -622,17 +605,13 @@ find_alias(alias, type)
sizeof(ai), aliascmp) != NULL);
}
/**********************************************************************
*
* more_aliases()
*
* This function allocates more space for the aliases list.
/*
* Allocates more space for the aliases list.
*/
static int
more_aliases()
{
nslots += MOREALIASES;
if (nslots == MOREALIASES)
aliases = (aliasinfo *) malloc(nslots * sizeof(aliasinfo));
@@ -642,14 +621,9 @@ more_aliases()
return(aliases != NULL);
}
/**********************************************************************
*
* dumpaliases()
*
* This function lists the contents of the aliases list.
/*
* Lists the contents of the aliases list.
*/
void
dumpaliases()
{
@@ -677,15 +651,9 @@ dumpaliases()
}
}
/**********************************************************************
*
* list_matches()
*
* This function lists the contents of cm_list and ga_list for
* `sudo -l'.
/*
* Lists the contents of cm_list and ga_list for `sudo -l'.
*/
void
list_matches()
{
@@ -748,15 +716,9 @@ list_matches()
cm_list_size = 0;
}
/**********************************************************************
*
* append()
*
* This function appends a source string to the destination prefixing
* a separator if one is given.
/*
* Appends a source string to the destination, optionally prefixing a separator.
*/
static void
append(src, dstp, dst_len, dst_size, separator)
char *src, **dstp;
@@ -792,18 +754,13 @@ append(src, dstp, dst_len, dst_size, separator)
*dst_len += src_len;
}
/**********************************************************************
*
* reset_aliases()
*
* This function frees up space used by the aliases list and resets
* the associated counters.
/*
* Frees up space used by the aliases list and resets the associated counters.
*/
void
reset_aliases()
{
if (aliases) {
free(aliases);
aliases = NULL;
@@ -811,17 +768,13 @@ reset_aliases()
naliases = nslots = 0;
}
/**********************************************************************
*
* expand_ga_list()
*
* This function increments ga_list_len, allocating more space as necessary.
/*
* Increments ga_list_len, allocating more space as necessary.
*/
static void
expand_ga_list()
{
if (++ga_list_len >= ga_list_size) {
while ((ga_list_size += STACKINCREMENT) < ga_list_len)
;
@@ -832,17 +785,13 @@ expand_ga_list()
ga_list[ga_list_len - 1].entries = NULL;
}
/**********************************************************************
*
* expand_match_list()
*
* This function increments cm_list_len, allocating more space as necessary.
/*
* Increments cm_list_len, allocating more space as necessary.
*/
static void
expand_match_list()
{
if (++cm_list_len >= cm_list_size) {
while ((cm_list_size += STACKINCREMENT) < cm_list_len)
;
@@ -856,18 +805,14 @@ expand_match_list()
cm_list[cm_list_len].nopasswd = FALSE;
}
/**********************************************************************
*
* init_parser()
*
* This function frees up spaced used by a previous parse and
* allocates new space for various data structures.
/*
* Frees up spaced used by a previous parser run and allocates new space
* for various data structures.
*/
void
init_parser()
{
/* Free up old data structures if we run the parser more than once. */
if (match) {
free(match);
@@ -886,7 +831,7 @@ init_parser()
if (printmatches == TRUE)
expand_match_list();
}
#line 890 "sudo.tab.c"
#line 835 "sudo.tab.c"
/* allocate initial stack or double stack size, up to YYMAXDEPTH */
#if defined(__cplusplus) || __STDC__
static int yygrowstack(void)
@@ -1067,19 +1012,19 @@ yyreduce:
switch (yyn)
{
case 3:
#line 210 "parse.yacc"
#line 212 "parse.yacc"
{ ; }
break;
case 4:
#line 212 "parse.yacc"
#line 214 "parse.yacc"
{ yyerrok; }
break;
case 5:
#line 213 "parse.yacc"
#line 215 "parse.yacc"
{ push; }
break;
case 6:
#line 213 "parse.yacc"
#line 215 "parse.yacc"
{
while (top && user_matches != TRUE) {
pop;
@@ -1087,23 +1032,23 @@ case 6:
}
break;
case 7:
#line 219 "parse.yacc"
{ ; }
break;
case 8:
#line 221 "parse.yacc"
{ ; }
break;
case 9:
case 8:
#line 223 "parse.yacc"
{ ; }
break;
case 10:
case 9:
#line 225 "parse.yacc"
{ ; }
break;
case 10:
#line 227 "parse.yacc"
{ ; }
break;
case 13:
#line 233 "parse.yacc"
#line 235 "parse.yacc"
{
/*
* We already did a push if necessary in
@@ -1116,13 +1061,13 @@ case 13:
}
break;
case 15:
#line 246 "parse.yacc"
#line 248 "parse.yacc"
{
push;
}
break;
case 16:
#line 248 "parse.yacc"
#line 250 "parse.yacc"
{
pop;
if (host_matched == TRUE)
@@ -1132,13 +1077,13 @@ case 16:
}
break;
case 17:
#line 256 "parse.yacc"
#line 258 "parse.yacc"
{
host_matches = TRUE;
}
break;
case 18:
#line 259 "parse.yacc"
#line 261 "parse.yacc"
{
if (addr_matches(yyvsp[0].string))
host_matches = TRUE;
@@ -1146,41 +1091,41 @@ case 18:
}
break;
case 19:
#line 264 "parse.yacc"
#line 266 "parse.yacc"
{
if (netgr_matches(yyvsp[0].string, host, NULL))
if (netgr_matches(yyvsp[0].string, user_host, NULL))
host_matches = TRUE;
free(yyvsp[0].string);
}
break;
case 20:
#line 269 "parse.yacc"
#line 271 "parse.yacc"
{
if (strcasecmp(shost, yyvsp[0].string) == 0)
if (strcasecmp(user_shost, yyvsp[0].string) == 0)
host_matches = TRUE;
free(yyvsp[0].string);
}
break;
case 21:
#line 274 "parse.yacc"
#line 276 "parse.yacc"
{
if (strcasecmp(host, yyvsp[0].string) == 0)
if (strcasecmp(user_host, yyvsp[0].string) == 0)
host_matches = TRUE;
free(yyvsp[0].string);
}
break;
case 22:
#line 279 "parse.yacc"
#line 281 "parse.yacc"
{
/* could be an all-caps hostname */
if (find_alias(yyvsp[0].string, HOST_ALIAS) == TRUE ||
strcasecmp(shost, yyvsp[0].string) == 0)
strcasecmp(user_shost, yyvsp[0].string) == 0)
host_matches = TRUE;
free(yyvsp[0].string);
}
break;
case 25:
#line 292 "parse.yacc"
#line 294 "parse.yacc"
{
if (printmatches == TRUE &&
(runas_matches == -1 || cmnd_matches == -1)) {
@@ -1201,11 +1146,11 @@ case 25:
}
break;
case 26:
#line 312 "parse.yacc"
#line 314 "parse.yacc"
{ ; }
break;
case 27:
#line 313 "parse.yacc"
#line 315 "parse.yacc"
{
if (printmatches == TRUE && host_matches == TRUE &&
user_matches == TRUE) {
@@ -1221,7 +1166,7 @@ case 27:
}
break;
case 28:
#line 325 "parse.yacc"
#line 327 "parse.yacc"
{
pop;
if (cmnd_matched == TRUE)
@@ -1232,7 +1177,7 @@ case 28:
}
break;
case 29:
#line 335 "parse.yacc"
#line 337 "parse.yacc"
{
/*
* If this is the first entry in a command list
@@ -1240,15 +1185,15 @@ case 29:
*/
if (runas_matches == -1)
runas_matches =
(strcmp(RUNAS_DEFAULT, runas_user) == 0);
(strcmp(RUNAS_DEFAULT, user_runas) == 0);
}
break;
case 30:
#line 344 "parse.yacc"
#line 346 "parse.yacc"
{ ; }
break;
case 33:
#line 351 "parse.yacc"
#line 353 "parse.yacc"
{
if (printmatches == TRUE && host_matches == TRUE &&
user_matches == TRUE)
@@ -1258,7 +1203,7 @@ case 33:
}
break;
case 34:
#line 358 "parse.yacc"
#line 360 "parse.yacc"
{
if (printmatches == TRUE && host_matches == TRUE &&
user_matches == TRUE) {
@@ -1272,7 +1217,7 @@ case 34:
}
break;
case 35:
#line 368 "parse.yacc"
#line 370 "parse.yacc"
{
pop;
/*
@@ -1285,9 +1230,9 @@ case 35:
}
break;
case 36:
#line 379 "parse.yacc"
#line 381 "parse.yacc"
{
runas_matches = (strcmp(yyvsp[0].string, runas_user) == 0);
runas_matches = (strcmp(yyvsp[0].string, user_runas) == 0);
if (printmatches == TRUE && in_alias == TRUE)
append(yyvsp[0].string, &ga_list[ga_list_len-1].entries,
&ga_list[ga_list_len-1].entries_len,
@@ -1301,9 +1246,9 @@ case 36:
}
break;
case 37:
#line 392 "parse.yacc"
#line 394 "parse.yacc"
{
runas_matches = usergr_matches(yyvsp[0].string, runas_user);
runas_matches = usergr_matches(yyvsp[0].string, user_runas);
if (printmatches == TRUE && in_alias == TRUE)
append(yyvsp[0].string, &ga_list[ga_list_len-1].entries,
&ga_list[ga_list_len-1].entries_len,
@@ -1318,9 +1263,9 @@ case 37:
}
break;
case 38:
#line 406 "parse.yacc"
#line 408 "parse.yacc"
{
runas_matches = netgr_matches(yyvsp[0].string, NULL, runas_user);
runas_matches = netgr_matches(yyvsp[0].string, NULL, user_runas);
if (printmatches == TRUE && in_alias == TRUE)
append(yyvsp[0].string, &ga_list[ga_list_len-1].entries,
&ga_list[ga_list_len-1].entries_len,
@@ -1335,11 +1280,11 @@ case 38:
}
break;
case 39:
#line 420 "parse.yacc"
#line 422 "parse.yacc"
{
/* could be an all-caps username */
if (find_alias(yyvsp[0].string, RUNAS_ALIAS) == TRUE ||
strcmp(yyvsp[0].string, runas_user) == 0)
strcmp(yyvsp[0].string, user_runas) == 0)
runas_matches = TRUE;
else
runas_matches = FALSE;
@@ -1356,7 +1301,7 @@ case 39:
}
break;
case 40:
#line 438 "parse.yacc"
#line 440 "parse.yacc"
{
runas_matches = TRUE;
if (printmatches == TRUE && in_alias == TRUE)
@@ -1371,13 +1316,13 @@ case 40:
}
break;
case 41:
#line 452 "parse.yacc"
#line 454 "parse.yacc"
{
;
}
break;
case 42:
#line 455 "parse.yacc"
#line 457 "parse.yacc"
{
no_passwd = TRUE;
if (printmatches == TRUE && host_matches == TRUE &&
@@ -1386,7 +1331,7 @@ case 42:
}
break;
case 43:
#line 461 "parse.yacc"
#line 463 "parse.yacc"
{
no_passwd = FALSE;
if (printmatches == TRUE && host_matches == TRUE &&
@@ -1395,7 +1340,7 @@ case 43:
}
break;
case 44:
#line 469 "parse.yacc"
#line 471 "parse.yacc"
{
if (printmatches == TRUE && in_alias == TRUE) {
append("ALL", &ga_list[ga_list_len-1].entries,
@@ -1411,13 +1356,13 @@ case 44:
}
yyval.BOOLEAN = cmnd_matches = TRUE;
if (cmnd_safe)
free(cmnd_safe);
cmnd_safe = estrdup(cmnd);
if (safe_cmnd)
free(safe_cmnd);
safe_cmnd = estrdup(user_cmnd);
}
break;
case 45:
#line 488 "parse.yacc"
#line 490 "parse.yacc"
{
if (printmatches == TRUE && in_alias == TRUE) {
append(yyvsp[0].string, &ga_list[ga_list_len-1].entries,
@@ -1439,7 +1384,7 @@ case 45:
}
break;
case 46:
#line 507 "parse.yacc"
#line 509 "parse.yacc"
{
if (printmatches == TRUE && in_alias == TRUE) {
append(yyvsp[0].command.cmnd, &ga_list[ga_list_len-1].entries,
@@ -1463,8 +1408,8 @@ case 46:
}
/* if NewArgc > 1 pass ptr to 1st arg, else NULL */
if (command_matches(cmnd, (NewArgc > 1) ?
cmnd_args : NULL, yyvsp[0].command.cmnd, yyvsp[0].command.args)) {
if (command_matches(user_cmnd, (NewArgc > 1) ?
user_args : NULL, yyvsp[0].command.cmnd, yyvsp[0].command.args)) {
cmnd_matches = TRUE;
yyval.BOOLEAN = TRUE;
}
@@ -1475,11 +1420,11 @@ case 46:
}
break;
case 49:
#line 546 "parse.yacc"
#line 548 "parse.yacc"
{ push; }
break;
case 50:
#line 546 "parse.yacc"
#line 548 "parse.yacc"
{
if (host_matches == TRUE &&
add_alias(yyvsp[-3].string, HOST_ALIAS) == FALSE)
@@ -1488,7 +1433,7 @@ case 50:
}
break;
case 55:
#line 562 "parse.yacc"
#line 564 "parse.yacc"
{
push;
if (printmatches == TRUE) {
@@ -1500,7 +1445,7 @@ case 55:
}
break;
case 56:
#line 570 "parse.yacc"
#line 572 "parse.yacc"
{
if (cmnd_matches == TRUE &&
add_alias(yyvsp[-3].string, CMND_ALIAS) == FALSE)
@@ -1513,11 +1458,11 @@ case 56:
}
break;
case 57:
#line 582 "parse.yacc"
#line 584 "parse.yacc"
{ ; }
break;
case 61:
#line 590 "parse.yacc"
#line 592 "parse.yacc"
{
push;
if (printmatches == TRUE) {
@@ -1529,7 +1474,7 @@ case 61:
}
break;
case 62:
#line 598 "parse.yacc"
#line 600 "parse.yacc"
{
if (runas_matches > 0 &&
add_alias(yyvsp[-3].string, RUNAS_ALIAS) == FALSE)
@@ -1542,11 +1487,11 @@ case 62:
}
break;
case 65:
#line 614 "parse.yacc"
#line 616 "parse.yacc"
{ push; }
break;
case 66:
#line 614 "parse.yacc"
#line 616 "parse.yacc"
{
if (user_matches == TRUE &&
add_alias(yyvsp[-3].string, USER_ALIAS) == FALSE)
@@ -1556,17 +1501,17 @@ case 66:
}
break;
case 67:
#line 623 "parse.yacc"
#line 625 "parse.yacc"
{ ; }
break;
case 70:
#line 628 "parse.yacc"
#line 630 "parse.yacc"
{
push;
}
break;
case 71:
#line 630 "parse.yacc"
#line 632 "parse.yacc"
{
pop;
if (user_matched == TRUE)
@@ -1576,7 +1521,7 @@ case 71:
}
break;
case 72:
#line 638 "parse.yacc"
#line 640 "parse.yacc"
{
if (strcmp(yyvsp[0].string, user_name) == 0)
user_matches = TRUE;
@@ -1584,7 +1529,7 @@ case 72:
}
break;
case 73:
#line 643 "parse.yacc"
#line 645 "parse.yacc"
{
if (usergr_matches(yyvsp[0].string, user_name))
user_matches = TRUE;
@@ -1592,7 +1537,7 @@ case 73:
}
break;
case 74:
#line 648 "parse.yacc"
#line 650 "parse.yacc"
{
if (netgr_matches(yyvsp[0].string, NULL, user_name))
user_matches = TRUE;
@@ -1600,7 +1545,7 @@ case 74:
}
break;
case 75:
#line 653 "parse.yacc"
#line 655 "parse.yacc"
{
/* could be an all-caps username */
if (find_alias(yyvsp[0].string, USER_ALIAS) == TRUE ||
@@ -1610,12 +1555,12 @@ case 75:
}
break;
case 76:
#line 660 "parse.yacc"
#line 662 "parse.yacc"
{
user_matches = TRUE;
}
break;
#line 1619 "sudo.tab.c"
#line 1564 "sudo.tab.c"
}
yyssp -= yym;
yystate = *yyssp;