From: Todd C. Miller <Todd.Miller@sudo.ws>
Date: Thu, 15 Aug 2019 20:20:12 +0000 (-0600)
Subject: Fix special handling of ipa_hostname that was lost in sudo 1.8.24.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=e99082e05b9f0dd0e0f47fa1d2e1b9d922ea8c4c;p=sudo

Fix special handling of ipa_hostname that was lost in sudo 1.8.24.
We now include the long and short hostname in sudo parser container.
---

diff --git a/plugins/sudoers/file.c b/plugins/sudoers/file.c
index fff78a19f..5028ce01c 100644
--- a/plugins/sudoers/file.c
+++ b/plugins/sudoers/file.c
@@ -85,7 +85,7 @@ sudo_file_open(struct sudo_nss *nss)
     if (handle != NULL) {
 	handle->fp = open_sudoers(sudoers_file, false, NULL);
 	if (handle->fp != NULL) {
-	    init_parse_tree(&handle->parse_tree);
+	    init_parse_tree(&handle->parse_tree, NULL, NULL);
 	} else {
 	    free(handle);
 	    handle = NULL;
diff --git a/plugins/sudoers/gram.c b/plugins/sudoers/gram.c
index 343e4299c..6545e129e 100644
--- a/plugins/sudoers/gram.c
+++ b/plugins/sudoers/gram.c
@@ -106,7 +106,9 @@ char *errorfile = NULL;
 struct sudoers_parse_tree parsed_policy = {
     TAILQ_HEAD_INITIALIZER(parsed_policy.userspecs),
     TAILQ_HEAD_INITIALIZER(parsed_policy.defaults),
-    NULL /* aliases */
+    NULL, /* aliases */
+    NULL, /* lhost */
+    NULL /* shost */
 };
 
 /*
@@ -118,7 +120,7 @@ static bool add_userspec(struct member *, struct privilege *);
 static struct defaults *new_default(char *, char *, short);
 static struct member *new_member(char *, int);
 static struct command_digest *new_digest(int, char *);
-#line 80 "gram.y"
+#line 82 "gram.y"
 #ifndef YYSTYPE_DEFINED
 #define YYSTYPE_DEFINED
 typedef union {
@@ -135,7 +137,7 @@ typedef union {
     int tok;
 } YYSTYPE;
 #endif /* YYSTYPE_DEFINED */
-#line 133 "gram.c"
+#line 135 "gram.c"
 #define COMMAND 257
 #define ALIAS 258
 #define DEFVAR 259
@@ -675,7 +677,7 @@ short *yysslim;
 YYSTYPE *yyvs;
 unsigned int yystacksize;
 int yyparse(void);
-#line 906 "gram.y"
+#line 908 "gram.y"
 void
 sudoerserror(const char *s)
 {
@@ -1019,11 +1021,14 @@ free_userspec(struct userspec *us)
  * Initialized a sudoers parse tree.
  */
 void
-init_parse_tree(struct sudoers_parse_tree *parse_tree)
+init_parse_tree(struct sudoers_parse_tree *parse_tree, const char *lhost,
+    const char *shost)
 {
     TAILQ_INIT(&parse_tree->userspecs);
     TAILQ_INIT(&parse_tree->defaults);
     parse_tree->aliases = NULL;
+    parse_tree->shost = shost;
+    parse_tree->lhost = lhost;
 }
 
 /*
@@ -1100,7 +1105,7 @@ init_options(struct command_options *opts)
     opts->limitprivs = NULL;
 #endif
 }
-#line 1046 "gram.c"
+#line 1051 "gram.c"
 /* allocate initial stack or double stack size, up to YYMAXDEPTH */
 #if defined(__cplusplus) || defined(__STDC__)
 static int yygrowstack(void)
@@ -1309,23 +1314,23 @@ yyreduce:
     switch (yyn)
     {
 case 1:
-#line 178 "gram.y"
+#line 180 "gram.y"
 { ; }
 break;
 case 5:
-#line 186 "gram.y"
+#line 188 "gram.y"
 {
 			    ;
 			}
 break;
 case 6:
-#line 189 "gram.y"
+#line 191 "gram.y"
 {
 			    yyerrok;
 			}
 break;
 case 7:
-#line 192 "gram.y"
+#line 194 "gram.y"
 {
 			    if (!add_userspec(yyvsp[-1].member, yyvsp[0].privilege)) {
 				sudoerserror(N_("unable to allocate memory"));
@@ -1334,73 +1339,73 @@ case 7:
 			}
 break;
 case 8:
-#line 198 "gram.y"
+#line 200 "gram.y"
 {
 			    ;
 			}
 break;
 case 9:
-#line 201 "gram.y"
+#line 203 "gram.y"
 {
 			    ;
 			}
 break;
 case 10:
-#line 204 "gram.y"
+#line 206 "gram.y"
 {
 			    ;
 			}
 break;
 case 11:
-#line 207 "gram.y"
+#line 209 "gram.y"
 {
 			    ;
 			}
 break;
 case 12:
-#line 210 "gram.y"
+#line 212 "gram.y"
 {
 			    if (!add_defaults(DEFAULTS, NULL, yyvsp[0].defaults))
 				YYERROR;
 			}
 break;
 case 13:
-#line 214 "gram.y"
+#line 216 "gram.y"
 {
 			    if (!add_defaults(DEFAULTS_USER, yyvsp[-1].member, yyvsp[0].defaults))
 				YYERROR;
 			}
 break;
 case 14:
-#line 218 "gram.y"
+#line 220 "gram.y"
 {
 			    if (!add_defaults(DEFAULTS_RUNAS, yyvsp[-1].member, yyvsp[0].defaults))
 				YYERROR;
 			}
 break;
 case 15:
-#line 222 "gram.y"
+#line 224 "gram.y"
 {
 			    if (!add_defaults(DEFAULTS_HOST, yyvsp[-1].member, yyvsp[0].defaults))
 				YYERROR;
 			}
 break;
 case 16:
-#line 226 "gram.y"
+#line 228 "gram.y"
 {
 			    if (!add_defaults(DEFAULTS_CMND, yyvsp[-1].member, yyvsp[0].defaults))
 				YYERROR;
 			}
 break;
 case 18:
-#line 233 "gram.y"
+#line 235 "gram.y"
 {
 			    HLTQ_CONCAT(yyvsp[-2].defaults, yyvsp[0].defaults, entries);
 			    yyval.defaults = yyvsp[-2].defaults;
 			}
 break;
 case 19:
-#line 239 "gram.y"
+#line 241 "gram.y"
 {
 			    yyval.defaults = new_default(yyvsp[0].string, NULL, true);
 			    if (yyval.defaults == NULL) {
@@ -1410,7 +1415,7 @@ case 19:
 			}
 break;
 case 20:
-#line 246 "gram.y"
+#line 248 "gram.y"
 {
 			    yyval.defaults = new_default(yyvsp[0].string, NULL, false);
 			    if (yyval.defaults == NULL) {
@@ -1420,7 +1425,7 @@ case 20:
 			}
 break;
 case 21:
-#line 253 "gram.y"
+#line 255 "gram.y"
 {
 			    yyval.defaults = new_default(yyvsp[-2].string, yyvsp[0].string, true);
 			    if (yyval.defaults == NULL) {
@@ -1430,7 +1435,7 @@ case 21:
 			}
 break;
 case 22:
-#line 260 "gram.y"
+#line 262 "gram.y"
 {
 			    yyval.defaults = new_default(yyvsp[-2].string, yyvsp[0].string, '+');
 			    if (yyval.defaults == NULL) {
@@ -1440,7 +1445,7 @@ case 22:
 			}
 break;
 case 23:
-#line 267 "gram.y"
+#line 269 "gram.y"
 {
 			    yyval.defaults = new_default(yyvsp[-2].string, yyvsp[0].string, '-');
 			    if (yyval.defaults == NULL) {
@@ -1450,14 +1455,14 @@ case 23:
 			}
 break;
 case 25:
-#line 277 "gram.y"
+#line 279 "gram.y"
 {
 			    HLTQ_CONCAT(yyvsp[-2].privilege, yyvsp[0].privilege, entries);
 			    yyval.privilege = yyvsp[-2].privilege;
 			}
 break;
 case 26:
-#line 283 "gram.y"
+#line 285 "gram.y"
 {
 			    struct privilege *p = calloc(1, sizeof(*p));
 			    if (p == NULL) {
@@ -1472,21 +1477,21 @@ case 26:
 			}
 break;
 case 27:
-#line 297 "gram.y"
+#line 299 "gram.y"
 {
 			    yyval.member = yyvsp[0].member;
 			    yyval.member->negated = false;
 			}
 break;
 case 28:
-#line 301 "gram.y"
+#line 303 "gram.y"
 {
 			    yyval.member = yyvsp[0].member;
 			    yyval.member->negated = true;
 			}
 break;
 case 29:
-#line 307 "gram.y"
+#line 309 "gram.y"
 {
 			    yyval.member = new_member(yyvsp[0].string, ALIAS);
 			    if (yyval.member == NULL) {
@@ -1496,7 +1501,7 @@ case 29:
 			}
 break;
 case 30:
-#line 314 "gram.y"
+#line 316 "gram.y"
 {
 			    yyval.member = new_member(NULL, ALL);
 			    if (yyval.member == NULL) {
@@ -1506,7 +1511,7 @@ case 30:
 			}
 break;
 case 31:
-#line 321 "gram.y"
+#line 323 "gram.y"
 {
 			    yyval.member = new_member(yyvsp[0].string, NETGROUP);
 			    if (yyval.member == NULL) {
@@ -1516,7 +1521,7 @@ case 31:
 			}
 break;
 case 32:
-#line 328 "gram.y"
+#line 330 "gram.y"
 {
 			    yyval.member = new_member(yyvsp[0].string, NTWKADDR);
 			    if (yyval.member == NULL) {
@@ -1526,7 +1531,7 @@ case 32:
 			}
 break;
 case 33:
-#line 335 "gram.y"
+#line 337 "gram.y"
 {
 			    yyval.member = new_member(yyvsp[0].string, WORD);
 			    if (yyval.member == NULL) {
@@ -1536,7 +1541,7 @@ case 33:
 			}
 break;
 case 35:
-#line 345 "gram.y"
+#line 347 "gram.y"
 {
 			    struct cmndspec *prev;
 			    prev = HLTQ_LAST(yyvsp[-2].cmndspec, cmndspec, entries);
@@ -1590,7 +1595,7 @@ case 35:
 			}
 break;
 case 36:
-#line 398 "gram.y"
+#line 400 "gram.y"
 {
 			    struct cmndspec *cs = calloc(1, sizeof(*cs));
 			    if (cs == NULL) {
@@ -1642,7 +1647,7 @@ case 36:
 			}
 break;
 case 37:
-#line 449 "gram.y"
+#line 451 "gram.y"
 {
 			    yyval.digest = new_digest(SUDO_DIGEST_SHA224, yyvsp[0].string);
 			    if (yyval.digest == NULL) {
@@ -1652,7 +1657,7 @@ case 37:
 			}
 break;
 case 38:
-#line 456 "gram.y"
+#line 458 "gram.y"
 {
 			    yyval.digest = new_digest(SUDO_DIGEST_SHA256, yyvsp[0].string);
 			    if (yyval.digest == NULL) {
@@ -1662,7 +1667,7 @@ case 38:
 			}
 break;
 case 39:
-#line 463 "gram.y"
+#line 465 "gram.y"
 {
 			    yyval.digest = new_digest(SUDO_DIGEST_SHA384, yyvsp[0].string);
 			    if (yyval.digest == NULL) {
@@ -1672,7 +1677,7 @@ case 39:
 			}
 break;
 case 40:
-#line 470 "gram.y"
+#line 472 "gram.y"
 {
 			    yyval.digest = new_digest(SUDO_DIGEST_SHA512, yyvsp[0].string);
 			    if (yyval.digest == NULL) {
@@ -1682,13 +1687,13 @@ case 40:
 			}
 break;
 case 41:
-#line 479 "gram.y"
+#line 481 "gram.y"
 {
 			    yyval.member = yyvsp[0].member;
 			}
 break;
 case 42:
-#line 482 "gram.y"
+#line 484 "gram.y"
 {
 			    if (yyvsp[0].member->type != COMMAND) {
 				sudoerserror(N_("a digest requires a path name"));
@@ -1700,75 +1705,75 @@ case 42:
 			}
 break;
 case 43:
-#line 493 "gram.y"
+#line 495 "gram.y"
 {
 			    yyval.member = yyvsp[0].member;
 			    yyval.member->negated = false;
 			}
 break;
 case 44:
-#line 497 "gram.y"
+#line 499 "gram.y"
 {
 			    yyval.member = yyvsp[0].member;
 			    yyval.member->negated = true;
 			}
 break;
 case 45:
-#line 503 "gram.y"
+#line 505 "gram.y"
 {
 			    yyval.string = yyvsp[0].string;
 			}
 break;
 case 46:
-#line 508 "gram.y"
+#line 510 "gram.y"
 {
 			    yyval.string = yyvsp[0].string;
 			}
 break;
 case 47:
-#line 512 "gram.y"
+#line 514 "gram.y"
 {
 			    yyval.string = yyvsp[0].string;
 			}
 break;
 case 48:
-#line 517 "gram.y"
+#line 519 "gram.y"
 {
 			    yyval.string = yyvsp[0].string;
 			}
 break;
 case 49:
-#line 522 "gram.y"
+#line 524 "gram.y"
 {
 			    yyval.string = yyvsp[0].string;
 			}
 break;
 case 50:
-#line 527 "gram.y"
+#line 529 "gram.y"
 {
 			    yyval.string = yyvsp[0].string;
 			}
 break;
 case 51:
-#line 531 "gram.y"
+#line 533 "gram.y"
 {
 			    yyval.string = yyvsp[0].string;
 			}
 break;
 case 52:
-#line 536 "gram.y"
+#line 538 "gram.y"
 {
 			    yyval.runas = NULL;
 			}
 break;
 case 53:
-#line 539 "gram.y"
+#line 541 "gram.y"
 {
 			    yyval.runas = yyvsp[-1].runas;
 			}
 break;
 case 54:
-#line 544 "gram.y"
+#line 546 "gram.y"
 {
 			    yyval.runas = calloc(1, sizeof(struct runascontainer));
 			    if (yyval.runas != NULL) {
@@ -1786,7 +1791,7 @@ case 54:
 			}
 break;
 case 55:
-#line 559 "gram.y"
+#line 561 "gram.y"
 {
 			    yyval.runas = calloc(1, sizeof(struct runascontainer));
 			    if (yyval.runas == NULL) {
@@ -1798,7 +1803,7 @@ case 55:
 			}
 break;
 case 56:
-#line 568 "gram.y"
+#line 570 "gram.y"
 {
 			    yyval.runas = calloc(1, sizeof(struct runascontainer));
 			    if (yyval.runas == NULL) {
@@ -1810,7 +1815,7 @@ case 56:
 			}
 break;
 case 57:
-#line 577 "gram.y"
+#line 579 "gram.y"
 {
 			    yyval.runas = calloc(1, sizeof(struct runascontainer));
 			    if (yyval.runas == NULL) {
@@ -1822,7 +1827,7 @@ case 57:
 			}
 break;
 case 58:
-#line 586 "gram.y"
+#line 588 "gram.y"
 {
 			    yyval.runas = calloc(1, sizeof(struct runascontainer));
 			    if (yyval.runas != NULL) {
@@ -1840,13 +1845,13 @@ case 58:
 			}
 break;
 case 59:
-#line 603 "gram.y"
+#line 605 "gram.y"
 {
 			    init_options(&yyval.options);
 			}
 break;
 case 60:
-#line 606 "gram.y"
+#line 608 "gram.y"
 {
 			    yyval.options.notbefore = parse_gentime(yyvsp[0].string);
 			    free(yyvsp[0].string);
@@ -1857,7 +1862,7 @@ case 60:
 			}
 break;
 case 61:
-#line 614 "gram.y"
+#line 616 "gram.y"
 {
 			    yyval.options.notafter = parse_gentime(yyvsp[0].string);
 			    free(yyvsp[0].string);
@@ -1868,7 +1873,7 @@ case 61:
 			}
 break;
 case 62:
-#line 622 "gram.y"
+#line 624 "gram.y"
 {
 			    yyval.options.timeout = parse_timeout(yyvsp[0].string);
 			    free(yyvsp[0].string);
@@ -1882,7 +1887,7 @@ case 62:
 			}
 break;
 case 63:
-#line 633 "gram.y"
+#line 635 "gram.y"
 {
 #ifdef HAVE_SELINUX
 			    free(yyval.options.role);
@@ -1891,7 +1896,7 @@ case 63:
 			}
 break;
 case 64:
-#line 639 "gram.y"
+#line 641 "gram.y"
 {
 #ifdef HAVE_SELINUX
 			    free(yyval.options.type);
@@ -1900,7 +1905,7 @@ case 64:
 			}
 break;
 case 65:
-#line 645 "gram.y"
+#line 647 "gram.y"
 {
 #ifdef HAVE_PRIV_SET
 			    free(yyval.options.privs);
@@ -1909,7 +1914,7 @@ case 65:
 			}
 break;
 case 66:
-#line 651 "gram.y"
+#line 653 "gram.y"
 {
 #ifdef HAVE_PRIV_SET
 			    free(yyval.options.limitprivs);
@@ -1918,97 +1923,97 @@ case 66:
 			}
 break;
 case 67:
-#line 659 "gram.y"
+#line 661 "gram.y"
 {
 			    TAGS_INIT(yyval.tag);
 			}
 break;
 case 68:
-#line 662 "gram.y"
+#line 664 "gram.y"
 {
 			    yyval.tag.nopasswd = true;
 			}
 break;
 case 69:
-#line 665 "gram.y"
+#line 667 "gram.y"
 {
 			    yyval.tag.nopasswd = false;
 			}
 break;
 case 70:
-#line 668 "gram.y"
+#line 670 "gram.y"
 {
 			    yyval.tag.noexec = true;
 			}
 break;
 case 71:
-#line 671 "gram.y"
+#line 673 "gram.y"
 {
 			    yyval.tag.noexec = false;
 			}
 break;
 case 72:
-#line 674 "gram.y"
+#line 676 "gram.y"
 {
 			    yyval.tag.setenv = true;
 			}
 break;
 case 73:
-#line 677 "gram.y"
+#line 679 "gram.y"
 {
 			    yyval.tag.setenv = false;
 			}
 break;
 case 74:
-#line 680 "gram.y"
+#line 682 "gram.y"
 {
 			    yyval.tag.log_input = true;
 			}
 break;
 case 75:
-#line 683 "gram.y"
+#line 685 "gram.y"
 {
 			    yyval.tag.log_input = false;
 			}
 break;
 case 76:
-#line 686 "gram.y"
+#line 688 "gram.y"
 {
 			    yyval.tag.log_output = true;
 			}
 break;
 case 77:
-#line 689 "gram.y"
+#line 691 "gram.y"
 {
 			    yyval.tag.log_output = false;
 			}
 break;
 case 78:
-#line 692 "gram.y"
+#line 694 "gram.y"
 {
 			    yyval.tag.follow = true;
 			}
 break;
 case 79:
-#line 695 "gram.y"
+#line 697 "gram.y"
 {
 			    yyval.tag.follow = false;
 			}
 break;
 case 80:
-#line 698 "gram.y"
+#line 700 "gram.y"
 {
 			    yyval.tag.send_mail = true;
 			}
 break;
 case 81:
-#line 701 "gram.y"
+#line 703 "gram.y"
 {
 			    yyval.tag.send_mail = false;
 			}
 break;
 case 82:
-#line 706 "gram.y"
+#line 708 "gram.y"
 {
 			    yyval.member = new_member(NULL, ALL);
 			    if (yyval.member == NULL) {
@@ -2018,7 +2023,7 @@ case 82:
 			}
 break;
 case 83:
-#line 713 "gram.y"
+#line 715 "gram.y"
 {
 			    yyval.member = new_member(yyvsp[0].string, ALIAS);
 			    if (yyval.member == NULL) {
@@ -2028,7 +2033,7 @@ case 83:
 			}
 break;
 case 84:
-#line 720 "gram.y"
+#line 722 "gram.y"
 {
 			    struct sudo_command *c = calloc(1, sizeof(*c));
 			    if (c == NULL) {
@@ -2046,7 +2051,7 @@ case 84:
 			}
 break;
 case 87:
-#line 741 "gram.y"
+#line 743 "gram.y"
 {
 			    const char *s;
 			    s = alias_add(&parsed_policy, yyvsp[-2].string, HOSTALIAS,
@@ -2058,14 +2063,14 @@ case 87:
 			}
 break;
 case 89:
-#line 753 "gram.y"
+#line 755 "gram.y"
 {
 			    HLTQ_CONCAT(yyvsp[-2].member, yyvsp[0].member, entries);
 			    yyval.member = yyvsp[-2].member;
 			}
 break;
 case 92:
-#line 763 "gram.y"
+#line 765 "gram.y"
 {
 			    const char *s;
 			    s = alias_add(&parsed_policy, yyvsp[-2].string, CMNDALIAS,
@@ -2077,14 +2082,14 @@ case 92:
 			}
 break;
 case 94:
-#line 775 "gram.y"
+#line 777 "gram.y"
 {
 			    HLTQ_CONCAT(yyvsp[-2].member, yyvsp[0].member, entries);
 			    yyval.member = yyvsp[-2].member;
 			}
 break;
 case 97:
-#line 785 "gram.y"
+#line 787 "gram.y"
 {
 			    const char *s;
 			    s = alias_add(&parsed_policy, yyvsp[-2].string, RUNASALIAS,
@@ -2096,7 +2101,7 @@ case 97:
 			}
 break;
 case 100:
-#line 800 "gram.y"
+#line 802 "gram.y"
 {
 			    const char *s;
 			    s = alias_add(&parsed_policy, yyvsp[-2].string, USERALIAS,
@@ -2108,28 +2113,28 @@ case 100:
 			}
 break;
 case 102:
-#line 812 "gram.y"
+#line 814 "gram.y"
 {
 			    HLTQ_CONCAT(yyvsp[-2].member, yyvsp[0].member, entries);
 			    yyval.member = yyvsp[-2].member;
 			}
 break;
 case 103:
-#line 818 "gram.y"
+#line 820 "gram.y"
 {
 			    yyval.member = yyvsp[0].member;
 			    yyval.member->negated = false;
 			}
 break;
 case 104:
-#line 822 "gram.y"
+#line 824 "gram.y"
 {
 			    yyval.member = yyvsp[0].member;
 			    yyval.member->negated = true;
 			}
 break;
 case 105:
-#line 828 "gram.y"
+#line 830 "gram.y"
 {
 			    yyval.member = new_member(yyvsp[0].string, ALIAS);
 			    if (yyval.member == NULL) {
@@ -2139,7 +2144,7 @@ case 105:
 			}
 break;
 case 106:
-#line 835 "gram.y"
+#line 837 "gram.y"
 {
 			    yyval.member = new_member(NULL, ALL);
 			    if (yyval.member == NULL) {
@@ -2149,7 +2154,7 @@ case 106:
 			}
 break;
 case 107:
-#line 842 "gram.y"
+#line 844 "gram.y"
 {
 			    yyval.member = new_member(yyvsp[0].string, NETGROUP);
 			    if (yyval.member == NULL) {
@@ -2159,7 +2164,7 @@ case 107:
 			}
 break;
 case 108:
-#line 849 "gram.y"
+#line 851 "gram.y"
 {
 			    yyval.member = new_member(yyvsp[0].string, USERGROUP);
 			    if (yyval.member == NULL) {
@@ -2169,7 +2174,7 @@ case 108:
 			}
 break;
 case 109:
-#line 856 "gram.y"
+#line 858 "gram.y"
 {
 			    yyval.member = new_member(yyvsp[0].string, WORD);
 			    if (yyval.member == NULL) {
@@ -2179,28 +2184,28 @@ case 109:
 			}
 break;
 case 111:
-#line 866 "gram.y"
+#line 868 "gram.y"
 {
 			    HLTQ_CONCAT(yyvsp[-2].member, yyvsp[0].member, entries);
 			    yyval.member = yyvsp[-2].member;
 			}
 break;
 case 112:
-#line 872 "gram.y"
+#line 874 "gram.y"
 {
 			    yyval.member = yyvsp[0].member;
 			    yyval.member->negated = false;
 			}
 break;
 case 113:
-#line 876 "gram.y"
+#line 878 "gram.y"
 {
 			    yyval.member = yyvsp[0].member;
 			    yyval.member->negated = true;
 			}
 break;
 case 114:
-#line 882 "gram.y"
+#line 884 "gram.y"
 {
 			    yyval.member = new_member(yyvsp[0].string, ALIAS);
 			    if (yyval.member == NULL) {
@@ -2210,7 +2215,7 @@ case 114:
 			}
 break;
 case 115:
-#line 889 "gram.y"
+#line 891 "gram.y"
 {
 			    yyval.member = new_member(NULL, ALL);
 			    if (yyval.member == NULL) {
@@ -2220,7 +2225,7 @@ case 115:
 			}
 break;
 case 116:
-#line 896 "gram.y"
+#line 898 "gram.y"
 {
 			    yyval.member = new_member(yyvsp[0].string, WORD);
 			    if (yyval.member == NULL) {
@@ -2229,7 +2234,7 @@ case 116:
 			    }
 			}
 break;
-#line 2175 "gram.c"
+#line 2180 "gram.c"
     }
     yyssp -= yym;
     yystate = *yyssp;
diff --git a/plugins/sudoers/gram.y b/plugins/sudoers/gram.y
index 6f437062b..e4a0b6d3f 100644
--- a/plugins/sudoers/gram.y
+++ b/plugins/sudoers/gram.y
@@ -63,7 +63,9 @@ char *errorfile = NULL;
 struct sudoers_parse_tree parsed_policy = {
     TAILQ_HEAD_INITIALIZER(parsed_policy.userspecs),
     TAILQ_HEAD_INITIALIZER(parsed_policy.defaults),
-    NULL /* aliases */
+    NULL, /* aliases */
+    NULL, /* lhost */
+    NULL /* shost */
 };
 
 /*
@@ -1246,11 +1248,14 @@ free_userspec(struct userspec *us)
  * Initialized a sudoers parse tree.
  */
 void
-init_parse_tree(struct sudoers_parse_tree *parse_tree)
+init_parse_tree(struct sudoers_parse_tree *parse_tree, const char *lhost,
+    const char *shost)
 {
     TAILQ_INIT(&parse_tree->userspecs);
     TAILQ_INIT(&parse_tree->defaults);
     parse_tree->aliases = NULL;
+    parse_tree->shost = shost;
+    parse_tree->lhost = lhost;
 }
 
 /*
diff --git a/plugins/sudoers/ldap.c b/plugins/sudoers/ldap.c
index 3bbd25237..1a4212bf5 100644
--- a/plugins/sudoers/ldap.c
+++ b/plugins/sudoers/ldap.c
@@ -1665,7 +1665,7 @@ sudo_ldap_open(struct sudo_nss *nss)
     }
     handle->ld = ld;
     /* handle->pw = NULL; */
-    init_parse_tree(&handle->parse_tree);
+    init_parse_tree(&handle->parse_tree, NULL, NULL);
     nss->handle = handle;
 
 done:
diff --git a/plugins/sudoers/match.c b/plugins/sudoers/match.c
index 1936d4b0b..165a8f758 100644
--- a/plugins/sudoers/match.c
+++ b/plugins/sudoers/match.c
@@ -72,8 +72,10 @@ int
 user_matches(struct sudoers_parse_tree *parse_tree, const struct passwd *pw,
     const struct member *m)
 {
-    struct alias *a;
+    const char *lhost = parse_tree->lhost ? parse_tree->lhost : user_runhost;
+    const char *shost = parse_tree->shost ? parse_tree->shost : user_srunhost;
     int matched = UNSPEC;
+    struct alias *a;
     debug_decl(user_matches, SUDOERS_DEBUG_MATCH)
 
     switch (m->type) {
@@ -82,8 +84,8 @@ user_matches(struct sudoers_parse_tree *parse_tree, const struct passwd *pw,
 	    break;
 	case NETGROUP:
 	    if (netgr_matches(m->name,
-		def_netgroup_tuple ? user_runhost : NULL,
-		def_netgroup_tuple ? user_srunhost : NULL, pw->pw_name))
+		def_netgroup_tuple ? lhost : NULL,
+		def_netgroup_tuple ? shost : NULL, pw->pw_name))
 		matched = !m->negated;
 	    break;
 	case USERGROUP:
@@ -153,11 +155,13 @@ runaslist_matches(struct sudoers_parse_tree *parse_tree,
     const struct member_list *user_list, const struct member_list *group_list,
     struct member **matching_user, struct member **matching_group)
 {
+    const char *lhost = parse_tree->lhost ? parse_tree->lhost : user_runhost;
+    const char *shost = parse_tree->shost ? parse_tree->shost : user_srunhost;
+    int user_matched = UNSPEC;
+    int group_matched = UNSPEC;
     struct member *m;
     struct alias *a;
     int rc;
-    int user_matched = UNSPEC;
-    int group_matched = UNSPEC;
     debug_decl(runaslist_matches, SUDOERS_DEBUG_MATCH)
 
     if (ISSET(sudo_user.flags, RUNAS_USER_SPECIFIED) || !ISSET(sudo_user.flags, RUNAS_GROUP_SPECIFIED)) {
@@ -175,8 +179,8 @@ runaslist_matches(struct sudoers_parse_tree *parse_tree,
 			break;
 		    case NETGROUP:
 			if (netgr_matches(m->name,
-			    def_netgroup_tuple ? user_runhost : NULL,
-			    def_netgroup_tuple ? user_srunhost : NULL,
+			    def_netgroup_tuple ? lhost : NULL,
+			    def_netgroup_tuple ? shost : NULL,
 			    runas_pw->pw_name))
 			    user_matched = !m->negated;
 			break;
@@ -309,7 +313,10 @@ int
 hostlist_matches(struct sudoers_parse_tree *parse_tree, const struct passwd *pw,
     const struct member_list *list)
 {
-    return hostlist_matches_int(parse_tree, pw, user_runhost, user_srunhost, list);
+    const char *lhost = parse_tree->lhost ? parse_tree->lhost : user_runhost;
+    const char *shost = parse_tree->shost ? parse_tree->shost : user_srunhost;
+
+    return hostlist_matches_int(parse_tree, pw, lhost, shost, list);
 }
 
 /*
diff --git a/plugins/sudoers/parse.h b/plugins/sudoers/parse.h
index 30813f6d1..f5961f7fd 100644
--- a/plugins/sudoers/parse.h
+++ b/plugins/sudoers/parse.h
@@ -272,6 +272,7 @@ struct sudoers_parse_tree {
     struct userspec_list userspecs;
     struct defaults_list defaults;
     struct rbtree *aliases;
+    const char *shost, *lhost;
 };
 
 /* alias.c */
@@ -297,7 +298,7 @@ void free_userspec(struct userspec *us);
 void free_userspecs(struct userspec_list *usl);
 void free_default(struct defaults *def, struct member_list **binding);
 void free_defaults(struct defaults_list *defs);
-void init_parse_tree(struct sudoers_parse_tree *parse_tree);
+void init_parse_tree(struct sudoers_parse_tree *parse_tree, const char *shost, const char *lhost);
 void free_parse_tree(struct sudoers_parse_tree *parse_tree);
 void reparent_parse_tree(struct sudoers_parse_tree *new_tree);
 
diff --git a/plugins/sudoers/sssd.c b/plugins/sudoers/sssd.c
index 4f4464a62..69f6c1f9a 100644
--- a/plugins/sudoers/sssd.c
+++ b/plugins/sudoers/sssd.c
@@ -554,7 +554,6 @@ sudo_sss_open(struct sudo_nss *nss)
 	sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
 	debug_return_int(ENOMEM);
     }
-    init_parse_tree(&handle->parse_tree);
 
     /* Load symbols */
     handle->ssslib = sudo_dso_load(path, SUDO_DSO_LAZY);
@@ -612,8 +611,6 @@ sudo_sss_open(struct sudo_nss *nss)
 	debug_return_int(EFAULT);
     }
 
-    nss->handle = handle;
-
     /*
      * If runhost is the same as the local host, check for ipa_hostname
      * in sssd.conf and use it in preference to user_runhost.
@@ -625,6 +622,10 @@ sudo_sss_open(struct sudo_nss *nss)
 	}
     }
 
+    /* The "parse tree" contains userspecs, defaults, aliases and hostnames. */
+    init_parse_tree(&handle->parse_tree, handle->ipa_host, handle->ipa_shost);
+    nss->handle = handle;
+
     sudo_debug_printf(SUDO_DEBUG_DEBUG, "handle=%p", handle);
 
     debug_return_int(0);