1:
2: /* A Bison parser, made by GNU Bison 2.4.1. */
3:
4: /* Skeleton implementation for Bison's Yacc-like parsers in C
5:
6: Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006
7: Free Software Foundation, Inc.
8:
9: This program is free software: you can redistribute it and/or modify
10: it under the terms of the GNU General Public License as published by
11: the Free Software Foundation, either version 3 of the License, or
12: (at your option) any later version.
13:
14: This program is distributed in the hope that it will be useful,
15: but WITHOUT ANY WARRANTY; without even the implied warranty of
16: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17: GNU General Public License for more details.
18:
19: You should have received a copy of the GNU General Public License
20: along with this program. If not, see <http://www.gnu.org/licenses/>. */
21:
22: /* As a special exception, you may create a larger work that contains
23: part or all of the Bison parser skeleton and distribute that work
24: under terms of your choice, so long as that work isn't itself a
25: parser generator using the skeleton or a modified version thereof
26: as a parser skeleton. Alternatively, if you modify or redistribute
27: the parser skeleton itself, you may (at your option) remove this
28: special exception, which will cause the skeleton and the resulting
29: Bison output files to be licensed under the GNU General Public
30: License without this special exception.
31:
32: This special exception was added by the Free Software Foundation in
33: version 2.2 of Bison. */
34:
35: /* C LALR(1) parser skeleton written by Richard Stallman, by
36: simplifying the original so-called "semantic" parser. */
37:
38: /* All symbols defined below should begin with yy or YY, to avoid
39: infringing on user name space. This should be done even for local
40: variables, as they might otherwise be expanded by user macros.
41: There are some unavoidable exceptions within include files to
42: define necessary library symbols; they are noted "INFRINGES ON
43: USER NAME SPACE" below. */
44:
45: /* Identify Bison output. */
46: #define YYBISON 1
47:
48: /* Bison version. */
49: #define YYBISON_VERSION "2.4.1"
50:
51: /* Skeleton name. */
52: #define YYSKELETON_NAME "yacc.c"
53:
54: /* Pure parsers. */
55: #define YYPURE 0
56:
57: /* Push parsers. */
58: #define YYPUSH 0
59:
60: /* Pull parsers. */
61: #define YYPULL 1
62:
63: /* Using locations. */
64: #define YYLSP_NEEDED 0
65:
66: /* Substitute the variable and function names. */
67: #define yyparse __libipsecparse
68: #define yylex __libipseclex
69: #define yyerror __libipsecerror
70: #define yylval __libipseclval
71: #define yychar __libipsecchar
72: #define yydebug __libipsecdebug
73: #define yynerrs __libipsecnerrs
74:
75:
76: /* Copy the first part of user declarations. */
77:
78: /* Line 189 of yacc.c */
79: #line 65 "policy_parse.y"
80:
81: #ifdef HAVE_CONFIG_H
82: #include "config.h"
83: #endif
84:
85: #include <sys/types.h>
86: #include <sys/param.h>
87: #include <sys/socket.h>
88:
89: #include <netinet/in.h>
90: #include PATH_IPSEC_H
91:
92: #include <stdlib.h>
93: #include <stdio.h>
94: #include <string.h>
95: #include <netdb.h>
96:
97: #include <errno.h>
98:
99: #include "config.h"
100:
101: #include "ipsec_strerror.h"
102: #include "libpfkey.h"
103:
104: #ifndef INT32_MAX
105: #define INT32_MAX (0xffffffff)
106: #endif
107:
108: #ifndef INT32_MIN
109: #define INT32_MIN (-INT32_MAX-1)
110: #endif
111:
112: #define ATOX(c) \
113: (isdigit(c) ? (c - '0') : (isupper(c) ? (c - 'A' + 10) : (c - 'a' + 10) ))
114:
115: static u_int8_t *pbuf = NULL; /* sadb_x_policy buffer */
116: static int tlen = 0; /* total length of pbuf */
117: static int offset = 0; /* offset of pbuf */
118: static int p_dir, p_type, p_protocol, p_mode, p_level, p_reqid;
119: static u_int32_t p_priority = 0;
120: static long p_priority_offset = 0;
121: static struct sockaddr *p_src = NULL;
122: static struct sockaddr *p_dst = NULL;
123:
124: struct _val;
125: extern void yyerror __P((char *msg));
126: static struct sockaddr *parse_sockaddr __P((struct _val *addrbuf,
127: struct _val *portbuf));
128: static int rule_check __P((void));
129: static int init_x_policy __P((void));
130: static int set_x_request __P((struct sockaddr *, struct sockaddr *));
131: static int set_sockaddr __P((struct sockaddr *));
132: static void policy_parse_request_init __P((void));
133: static void *policy_parse __P((const char *, int));
134:
135: extern void __policy__strbuffer__init__ __P((const char *));
136: extern void __policy__strbuffer__free__ __P((void));
137: extern int yyparse __P((void));
138: extern int yylex __P((void));
139:
140: extern char *__libipsectext; /*XXX*/
141:
142:
143:
144: /* Line 189 of yacc.c */
145: #line 146 "policy_parse.c"
146:
147: /* Enabling traces. */
148: #ifndef YYDEBUG
149: # define YYDEBUG 0
150: #endif
151:
152: /* Enabling verbose error messages. */
153: #ifdef YYERROR_VERBOSE
154: # undef YYERROR_VERBOSE
155: # define YYERROR_VERBOSE 1
156: #else
157: # define YYERROR_VERBOSE 0
158: #endif
159:
160: /* Enabling the token table. */
161: #ifndef YYTOKEN_TABLE
162: # define YYTOKEN_TABLE 0
163: #endif
164:
165:
166: /* Tokens. */
167: #ifndef YYTOKENTYPE
168: # define YYTOKENTYPE
169: /* Put the tokens into the symbol table, so that GDB and other debuggers
170: know about them. */
171: enum yytokentype {
172: DIR = 258,
173: PRIORITY = 259,
174: PLUS = 260,
175: PRIO_BASE = 261,
176: PRIO_OFFSET = 262,
177: ACTION = 263,
178: PROTOCOL = 264,
179: MODE = 265,
180: LEVEL = 266,
181: LEVEL_SPECIFY = 267,
182: IPADDRESS = 268,
183: PORT = 269,
184: ME = 270,
185: ANY = 271,
186: SLASH = 272,
187: HYPHEN = 273
188: };
189: #endif
190: /* Tokens. */
191: #define DIR 258
192: #define PRIORITY 259
193: #define PLUS 260
194: #define PRIO_BASE 261
195: #define PRIO_OFFSET 262
196: #define ACTION 263
197: #define PROTOCOL 264
198: #define MODE 265
199: #define LEVEL 266
200: #define LEVEL_SPECIFY 267
201: #define IPADDRESS 268
202: #define PORT 269
203: #define ME 270
204: #define ANY 271
205: #define SLASH 272
206: #define HYPHEN 273
207:
208:
209:
210:
211: #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
212: typedef union YYSTYPE
213: {
214:
215: /* Line 214 of yacc.c */
216: #line 129 "policy_parse.y"
217:
218: u_int num;
219: u_int32_t num32;
220: struct _val {
221: int len;
222: char *buf;
223: } val;
224:
225:
226:
227: /* Line 214 of yacc.c */
228: #line 229 "policy_parse.c"
229: } YYSTYPE;
230: # define YYSTYPE_IS_TRIVIAL 1
231: # define yystype YYSTYPE /* obsolescent; will be withdrawn */
232: # define YYSTYPE_IS_DECLARED 1
233: #endif
234:
235:
236: /* Copy the second part of user declarations. */
237:
238:
239: /* Line 264 of yacc.c */
240: #line 241 "policy_parse.c"
241:
242: #ifdef short
243: # undef short
244: #endif
245:
246: #ifdef YYTYPE_UINT8
247: typedef YYTYPE_UINT8 yytype_uint8;
248: #else
249: typedef unsigned char yytype_uint8;
250: #endif
251:
252: #ifdef YYTYPE_INT8
253: typedef YYTYPE_INT8 yytype_int8;
254: #elif (defined __STDC__ || defined __C99__FUNC__ \
255: || defined __cplusplus || defined _MSC_VER)
256: typedef signed char yytype_int8;
257: #else
258: typedef short int yytype_int8;
259: #endif
260:
261: #ifdef YYTYPE_UINT16
262: typedef YYTYPE_UINT16 yytype_uint16;
263: #else
264: typedef unsigned short int yytype_uint16;
265: #endif
266:
267: #ifdef YYTYPE_INT16
268: typedef YYTYPE_INT16 yytype_int16;
269: #else
270: typedef short int yytype_int16;
271: #endif
272:
273: #ifndef YYSIZE_T
274: # ifdef __SIZE_TYPE__
275: # define YYSIZE_T __SIZE_TYPE__
276: # elif defined size_t
277: # define YYSIZE_T size_t
278: # elif ! defined YYSIZE_T && (defined __STDC__ || defined __C99__FUNC__ \
279: || defined __cplusplus || defined _MSC_VER)
280: # include <stddef.h> /* INFRINGES ON USER NAME SPACE */
281: # define YYSIZE_T size_t
282: # else
283: # define YYSIZE_T unsigned int
284: # endif
285: #endif
286:
287: #define YYSIZE_MAXIMUM ((YYSIZE_T) -1)
288:
289: #ifndef YY_
290: # if YYENABLE_NLS
291: # if ENABLE_NLS
292: # include <libintl.h> /* INFRINGES ON USER NAME SPACE */
293: # define YY_(msgid) dgettext ("bison-runtime", msgid)
294: # endif
295: # endif
296: # ifndef YY_
297: # define YY_(msgid) msgid
298: # endif
299: #endif
300:
301: /* Suppress unused-variable warnings by "using" E. */
302: #if ! defined lint || defined __GNUC__
303: # define YYUSE(e) ((void) (e))
304: #else
305: # define YYUSE(e) /* empty */
306: #endif
307:
308: /* Identity function, used to suppress warnings about constant conditions. */
309: #ifndef lint
310: # define YYID(n) (n)
311: #else
312: #if (defined __STDC__ || defined __C99__FUNC__ \
313: || defined __cplusplus || defined _MSC_VER)
314: static int
315: YYID (int yyi)
316: #else
317: static int
318: YYID (yyi)
319: int yyi;
320: #endif
321: {
322: return yyi;
323: }
324: #endif
325:
326: #if ! defined yyoverflow || YYERROR_VERBOSE
327:
328: /* The parser invokes alloca or malloc; define the necessary symbols. */
329:
330: # ifdef YYSTACK_USE_ALLOCA
331: # if YYSTACK_USE_ALLOCA
332: # ifdef __GNUC__
333: # define YYSTACK_ALLOC __builtin_alloca
334: # elif defined __BUILTIN_VA_ARG_INCR
335: # include <alloca.h> /* INFRINGES ON USER NAME SPACE */
336: # elif defined _AIX
337: # define YYSTACK_ALLOC __alloca
338: # elif defined _MSC_VER
339: # include <malloc.h> /* INFRINGES ON USER NAME SPACE */
340: # define alloca _alloca
341: # else
342: # define YYSTACK_ALLOC alloca
343: # if ! defined _ALLOCA_H && ! defined _STDLIB_H && (defined __STDC__ || defined __C99__FUNC__ \
344: || defined __cplusplus || defined _MSC_VER)
345: # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
346: # ifndef _STDLIB_H
347: # define _STDLIB_H 1
348: # endif
349: # endif
350: # endif
351: # endif
352: # endif
353:
354: # ifdef YYSTACK_ALLOC
355: /* Pacify GCC's `empty if-body' warning. */
356: # define YYSTACK_FREE(Ptr) do { /* empty */; } while (YYID (0))
357: # ifndef YYSTACK_ALLOC_MAXIMUM
358: /* The OS might guarantee only one guard page at the bottom of the stack,
359: and a page size can be as small as 4096 bytes. So we cannot safely
360: invoke alloca (N) if N exceeds 4096. Use a slightly smaller number
361: to allow for a few compiler-allocated temporary stack slots. */
362: # define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */
363: # endif
364: # else
365: # define YYSTACK_ALLOC YYMALLOC
366: # define YYSTACK_FREE YYFREE
367: # ifndef YYSTACK_ALLOC_MAXIMUM
368: # define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM
369: # endif
370: # if (defined __cplusplus && ! defined _STDLIB_H \
371: && ! ((defined YYMALLOC || defined malloc) \
372: && (defined YYFREE || defined free)))
373: # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
374: # ifndef _STDLIB_H
375: # define _STDLIB_H 1
376: # endif
377: # endif
378: # ifndef YYMALLOC
379: # define YYMALLOC malloc
380: # if ! defined malloc && ! defined _STDLIB_H && (defined __STDC__ || defined __C99__FUNC__ \
381: || defined __cplusplus || defined _MSC_VER)
382: void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
383: # endif
384: # endif
385: # ifndef YYFREE
386: # define YYFREE free
387: # if ! defined free && ! defined _STDLIB_H && (defined __STDC__ || defined __C99__FUNC__ \
388: || defined __cplusplus || defined _MSC_VER)
389: void free (void *); /* INFRINGES ON USER NAME SPACE */
390: # endif
391: # endif
392: # endif
393: #endif /* ! defined yyoverflow || YYERROR_VERBOSE */
394:
395:
396: #if (! defined yyoverflow \
397: && (! defined __cplusplus \
398: || (defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)))
399:
400: /* A type that is properly aligned for any stack member. */
401: union yyalloc
402: {
403: yytype_int16 yyss_alloc;
404: YYSTYPE yyvs_alloc;
405: };
406:
407: /* The size of the maximum gap between one aligned stack and the next. */
408: # define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
409:
410: /* The size of an array large to enough to hold all stacks, each with
411: N elements. */
412: # define YYSTACK_BYTES(N) \
413: ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \
414: + YYSTACK_GAP_MAXIMUM)
415:
416: /* Copy COUNT objects from FROM to TO. The source and destination do
417: not overlap. */
418: # ifndef YYCOPY
419: # if defined __GNUC__ && 1 < __GNUC__
420: # define YYCOPY(To, From, Count) \
421: __builtin_memcpy (To, From, (Count) * sizeof (*(From)))
422: # else
423: # define YYCOPY(To, From, Count) \
424: do \
425: { \
426: YYSIZE_T yyi; \
427: for (yyi = 0; yyi < (Count); yyi++) \
428: (To)[yyi] = (From)[yyi]; \
429: } \
430: while (YYID (0))
431: # endif
432: # endif
433:
434: /* Relocate STACK from its old location to the new one. The
435: local variables YYSIZE and YYSTACKSIZE give the old and new number of
436: elements in the stack, and YYPTR gives the new location of the
437: stack. Advance YYPTR to a properly aligned location for the next
438: stack. */
439: # define YYSTACK_RELOCATE(Stack_alloc, Stack) \
440: do \
441: { \
442: YYSIZE_T yynewbytes; \
443: YYCOPY (&yyptr->Stack_alloc, Stack, yysize); \
444: Stack = &yyptr->Stack_alloc; \
445: yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
446: yyptr += yynewbytes / sizeof (*yyptr); \
447: } \
448: while (YYID (0))
449:
450: #endif
451:
452: /* YYFINAL -- State number of the termination state. */
453: #define YYFINAL 5
454: /* YYLAST -- Last index in YYTABLE. */
455: #define YYLAST 48
456:
457: /* YYNTOKENS -- Number of terminals. */
458: #define YYNTOKENS 19
459: /* YYNNTS -- Number of nonterminals. */
460: #define YYNNTS 16
461: /* YYNRULES -- Number of rules. */
462: #define YYNRULES 34
463: /* YYNRULES -- Number of states. */
464: #define YYNSTATES 60
465:
466: /* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */
467: #define YYUNDEFTOK 2
468: #define YYMAXUTOK 273
469:
470: #define YYTRANSLATE(YYX) \
471: ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
472:
473: /* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX. */
474: static const yytype_uint8 yytranslate[] =
475: {
476: 0, 2, 2, 2, 2, 2, 2, 2, 2, 2,
477: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
478: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
479: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
480: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
481: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
482: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
483: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
484: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
485: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
486: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
487: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
488: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
489: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
490: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
491: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
492: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
493: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
494: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
495: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
496: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
497: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
498: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
499: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
500: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
501: 2, 2, 2, 2, 2, 2, 1, 2, 3, 4,
502: 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
503: 15, 16, 17, 18
504: };
505:
506: #if YYDEBUG
507: /* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
508: YYRHS. */
509: static const yytype_uint8 yyprhs[] =
510: {
511: 0, 0, 3, 4, 9, 10, 17, 18, 26, 27,
512: 34, 35, 44, 45, 54, 56, 57, 60, 68, 75,
513: 81, 86, 93, 97, 100, 102, 104, 106, 108, 110,
514: 111, 116, 117, 124, 128
515: };
516:
517: /* YYRHS -- A `-1'-separated list of the rules' RHS. */
518: static const yytype_int8 yyrhs[] =
519: {
520: 20, 0, -1, -1, 3, 8, 21, 27, -1, -1,
521: 3, 4, 7, 8, 22, 27, -1, -1, 3, 4,
522: 18, 7, 8, 23, 27, -1, -1, 3, 4, 6,
523: 8, 24, 27, -1, -1, 3, 4, 6, 5, 7,
524: 8, 25, 27, -1, -1, 3, 4, 6, 18, 7,
525: 8, 26, 27, -1, 3, -1, -1, 27, 28, -1,
526: 29, 17, 30, 17, 32, 17, 31, -1, 29, 17,
527: 30, 17, 32, 17, -1, 29, 17, 30, 17, 32,
528: -1, 29, 17, 30, 17, -1, 29, 17, 30, 17,
529: 17, 31, -1, 29, 17, 30, -1, 29, 17, -1,
530: 29, -1, 9, -1, 10, -1, 11, -1, 12, -1,
531: -1, 13, 33, 18, 13, -1, -1, 13, 14, 34,
532: 18, 13, 14, -1, 15, 18, 16, -1, 16, 18,
533: 15, -1
534: };
535:
536: /* YYRLINE[YYN] -- source line where rule number YYN was defined. */
537: static const yytype_uint16 yyrline[] =
538: {
539: 0, 151, 151, 150, 166, 165, 185, 184, 207, 206,
540: 218, 217, 240, 239, 261, 273, 275, 287, 288, 289,
541: 290, 291, 292, 293, 297, 304, 308, 312, 316, 323,
542: 323, 334, 334, 345, 351
543: };
544: #endif
545:
546: #if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
547: /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
548: First, the terminals, then, starting at YYNTOKENS, nonterminals. */
549: static const char *const yytname[] =
550: {
551: "$end", "error", "$undefined", "DIR", "PRIORITY", "PLUS", "PRIO_BASE",
552: "PRIO_OFFSET", "ACTION", "PROTOCOL", "MODE", "LEVEL", "LEVEL_SPECIFY",
553: "IPADDRESS", "PORT", "ME", "ANY", "SLASH", "HYPHEN", "$accept",
554: "policy_spec", "$@1", "$@2", "$@3", "$@4", "$@5", "$@6", "rules", "rule",
555: "protocol", "mode", "level", "addresses", "$@7", "$@8", 0
556: };
557: #endif
558:
559: # ifdef YYPRINT
560: /* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to
561: token YYLEX-NUM. */
562: static const yytype_uint16 yytoknum[] =
563: {
564: 0, 256, 257, 258, 259, 260, 261, 262, 263, 264,
565: 265, 266, 267, 268, 269, 270, 271, 272, 273
566: };
567: # endif
568:
569: /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */
570: static const yytype_uint8 yyr1[] =
571: {
572: 0, 19, 21, 20, 22, 20, 23, 20, 24, 20,
573: 25, 20, 26, 20, 20, 27, 27, 28, 28, 28,
574: 28, 28, 28, 28, 28, 29, 30, 31, 31, 33,
575: 32, 34, 32, 32, 32
576: };
577:
578: /* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */
579: static const yytype_uint8 yyr2[] =
580: {
581: 0, 2, 0, 4, 0, 6, 0, 7, 0, 6,
582: 0, 8, 0, 8, 1, 0, 2, 7, 6, 5,
583: 4, 6, 3, 2, 1, 1, 1, 1, 1, 0,
584: 4, 0, 6, 3, 3
585: };
586:
587: /* YYDEFACT[STATE-NAME] -- Default rule to reduce with in state
588: STATE-NUM when YYTABLE doesn't specify something else to do. Zero
589: means the default is an error. */
590: static const yytype_uint8 yydefact[] =
591: {
592: 0, 14, 0, 0, 2, 1, 0, 0, 0, 15,
593: 0, 8, 0, 4, 0, 3, 0, 15, 0, 15,
594: 6, 25, 16, 24, 10, 9, 12, 5, 15, 23,
595: 15, 15, 7, 26, 22, 11, 13, 20, 29, 0,
596: 0, 0, 19, 31, 0, 0, 0, 27, 28, 21,
597: 18, 0, 0, 33, 34, 17, 0, 30, 0, 32
598: };
599:
600: /* YYDEFGOTO[NTERM-NUM]. */
601: static const yytype_int8 yydefgoto[] =
602: {
603: -1, 2, 9, 19, 28, 17, 30, 31, 15, 22,
604: 23, 34, 49, 42, 44, 51
605: };
606:
607: /* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
608: STATE-NUM. */
609: #define YYPACT_NINF -18
610: static const yytype_int8 yypact[] =
611: {
612: 6, -3, 4, 1, -18, -18, -2, 2, 8, -18,
613: 10, -18, 18, -18, 19, 3, 20, -18, 21, -18,
614: -18, -18, -18, 9, -18, 3, -18, 3, -18, 22,
615: -18, -18, 3, -18, 13, 3, 3, 5, 17, 15,
616: 16, 12, 23, -18, 24, 25, 28, -18, -18, -18,
617: 12, 26, 32, -18, -18, -18, 33, -18, 34, -18
618: };
619:
620: /* YYPGOTO[NTERM-NUM]. */
621: static const yytype_int8 yypgoto[] =
622: {
623: -18, -18, -18, -18, -18, -18, -18, -18, -17, -18,
624: -18, -18, -15, -18, -18, -18
625: };
626:
627: /* YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If
628: positive, shift that token. If negative, reduce the rule which
629: number is the opposite. If zero, do what YYDEFACT says.
630: If YYTABLE_NINF, syntax error. */
631: #define YYTABLE_NINF -1
632: static const yytype_uint8 yytable[] =
633: {
634: 25, 3, 27, 10, 5, 4, 11, 6, 7, 1,
635: 13, 32, 21, 35, 36, 14, 12, 16, 38, 8,
636: 39, 40, 41, 47, 48, 18, 29, 20, 24, 26,
637: 37, 43, 33, 45, 46, 55, 0, 0, 0, 0,
638: 50, 53, 52, 54, 56, 57, 58, 0, 59
639: };
640:
641: static const yytype_int8 yycheck[] =
642: {
643: 17, 4, 19, 5, 0, 8, 8, 6, 7, 3,
644: 8, 28, 9, 30, 31, 7, 18, 7, 13, 18,
645: 15, 16, 17, 11, 12, 7, 17, 8, 8, 8,
646: 17, 14, 10, 18, 18, 50, -1, -1, -1, -1,
647: 17, 16, 18, 15, 18, 13, 13, -1, 14
648: };
649:
650: /* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
651: symbol of state STATE-NUM. */
652: static const yytype_uint8 yystos[] =
653: {
654: 0, 3, 20, 4, 8, 0, 6, 7, 18, 21,
655: 5, 8, 18, 8, 7, 27, 7, 24, 7, 22,
656: 8, 9, 28, 29, 8, 27, 8, 27, 23, 17,
657: 25, 26, 27, 10, 30, 27, 27, 17, 13, 15,
658: 16, 17, 32, 14, 33, 18, 18, 11, 12, 31,
659: 17, 34, 18, 16, 15, 31, 18, 13, 13, 14
660: };
661:
662: #define yyerrok (yyerrstatus = 0)
663: #define yyclearin (yychar = YYEMPTY)
664: #define YYEMPTY (-2)
665: #define YYEOF 0
666:
667: #define YYACCEPT goto yyacceptlab
668: #define YYABORT goto yyabortlab
669: #define YYERROR goto yyerrorlab
670:
671:
672: /* Like YYERROR except do call yyerror. This remains here temporarily
673: to ease the transition to the new meaning of YYERROR, for GCC.
674: Once GCC version 2 has supplanted version 1, this can go. */
675:
676: #define YYFAIL goto yyerrlab
677:
678: #define YYRECOVERING() (!!yyerrstatus)
679:
680: #define YYBACKUP(Token, Value) \
681: do \
682: if (yychar == YYEMPTY && yylen == 1) \
683: { \
684: yychar = (Token); \
685: yylval = (Value); \
686: yytoken = YYTRANSLATE (yychar); \
687: YYPOPSTACK (1); \
688: goto yybackup; \
689: } \
690: else \
691: { \
692: yyerror (YY_("syntax error: cannot back up")); \
693: YYERROR; \
694: } \
695: while (YYID (0))
696:
697:
698: #define YYTERROR 1
699: #define YYERRCODE 256
700:
701:
702: /* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
703: If N is 0, then set CURRENT to the empty location which ends
704: the previous symbol: RHS[0] (always defined). */
705:
706: #define YYRHSLOC(Rhs, K) ((Rhs)[K])
707: #ifndef YYLLOC_DEFAULT
708: # define YYLLOC_DEFAULT(Current, Rhs, N) \
709: do \
710: if (YYID (N)) \
711: { \
712: (Current).first_line = YYRHSLOC (Rhs, 1).first_line; \
713: (Current).first_column = YYRHSLOC (Rhs, 1).first_column; \
714: (Current).last_line = YYRHSLOC (Rhs, N).last_line; \
715: (Current).last_column = YYRHSLOC (Rhs, N).last_column; \
716: } \
717: else \
718: { \
719: (Current).first_line = (Current).last_line = \
720: YYRHSLOC (Rhs, 0).last_line; \
721: (Current).first_column = (Current).last_column = \
722: YYRHSLOC (Rhs, 0).last_column; \
723: } \
724: while (YYID (0))
725: #endif
726:
727:
728: /* YY_LOCATION_PRINT -- Print the location on the stream.
729: This macro was not mandated originally: define only if we know
730: we won't break user code: when these are the locations we know. */
731:
732: #ifndef YY_LOCATION_PRINT
733: # if YYLTYPE_IS_TRIVIAL
734: # define YY_LOCATION_PRINT(File, Loc) \
735: fprintf (File, "%d.%d-%d.%d", \
736: (Loc).first_line, (Loc).first_column, \
737: (Loc).last_line, (Loc).last_column)
738: # else
739: # define YY_LOCATION_PRINT(File, Loc) ((void) 0)
740: # endif
741: #endif
742:
743:
744: /* YYLEX -- calling `yylex' with the right arguments. */
745:
746: #ifdef YYLEX_PARAM
747: # define YYLEX yylex (YYLEX_PARAM)
748: #else
749: # define YYLEX yylex ()
750: #endif
751:
752: /* Enable debugging if requested. */
753: #if YYDEBUG
754:
755: # ifndef YYFPRINTF
756: # include <stdio.h> /* INFRINGES ON USER NAME SPACE */
757: # define YYFPRINTF fprintf
758: # endif
759:
760: # define YYDPRINTF(Args) \
761: do { \
762: if (yydebug) \
763: YYFPRINTF Args; \
764: } while (YYID (0))
765:
766: # define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
767: do { \
768: if (yydebug) \
769: { \
770: YYFPRINTF (stderr, "%s ", Title); \
771: yy_symbol_print (stderr, \
772: Type, Value); \
773: YYFPRINTF (stderr, "\n"); \
774: } \
775: } while (YYID (0))
776:
777:
778: /*--------------------------------.
779: | Print this symbol on YYOUTPUT. |
780: `--------------------------------*/
781:
782: /*ARGSUSED*/
783: #if (defined __STDC__ || defined __C99__FUNC__ \
784: || defined __cplusplus || defined _MSC_VER)
785: static void
786: yy_symbol_value_print (FILE *yyoutput, int yytype, YYSTYPE const * const yyvaluep)
787: #else
788: static void
789: yy_symbol_value_print (yyoutput, yytype, yyvaluep)
790: FILE *yyoutput;
791: int yytype;
792: YYSTYPE const * const yyvaluep;
793: #endif
794: {
795: if (!yyvaluep)
796: return;
797: # ifdef YYPRINT
798: if (yytype < YYNTOKENS)
799: YYPRINT (yyoutput, yytoknum[yytype], *yyvaluep);
800: # else
801: YYUSE (yyoutput);
802: # endif
803: switch (yytype)
804: {
805: default:
806: break;
807: }
808: }
809:
810:
811: /*--------------------------------.
812: | Print this symbol on YYOUTPUT. |
813: `--------------------------------*/
814:
815: #if (defined __STDC__ || defined __C99__FUNC__ \
816: || defined __cplusplus || defined _MSC_VER)
817: static void
818: yy_symbol_print (FILE *yyoutput, int yytype, YYSTYPE const * const yyvaluep)
819: #else
820: static void
821: yy_symbol_print (yyoutput, yytype, yyvaluep)
822: FILE *yyoutput;
823: int yytype;
824: YYSTYPE const * const yyvaluep;
825: #endif
826: {
827: if (yytype < YYNTOKENS)
828: YYFPRINTF (yyoutput, "token %s (", yytname[yytype]);
829: else
830: YYFPRINTF (yyoutput, "nterm %s (", yytname[yytype]);
831:
832: yy_symbol_value_print (yyoutput, yytype, yyvaluep);
833: YYFPRINTF (yyoutput, ")");
834: }
835:
836: /*------------------------------------------------------------------.
837: | yy_stack_print -- Print the state stack from its BOTTOM up to its |
838: | TOP (included). |
839: `------------------------------------------------------------------*/
840:
841: #if (defined __STDC__ || defined __C99__FUNC__ \
842: || defined __cplusplus || defined _MSC_VER)
843: static void
844: yy_stack_print (yytype_int16 *yybottom, yytype_int16 *yytop)
845: #else
846: static void
847: yy_stack_print (yybottom, yytop)
848: yytype_int16 *yybottom;
849: yytype_int16 *yytop;
850: #endif
851: {
852: YYFPRINTF (stderr, "Stack now");
853: for (; yybottom <= yytop; yybottom++)
854: {
855: int yybot = *yybottom;
856: YYFPRINTF (stderr, " %d", yybot);
857: }
858: YYFPRINTF (stderr, "\n");
859: }
860:
861: # define YY_STACK_PRINT(Bottom, Top) \
862: do { \
863: if (yydebug) \
864: yy_stack_print ((Bottom), (Top)); \
865: } while (YYID (0))
866:
867:
868: /*------------------------------------------------.
869: | Report that the YYRULE is going to be reduced. |
870: `------------------------------------------------*/
871:
872: #if (defined __STDC__ || defined __C99__FUNC__ \
873: || defined __cplusplus || defined _MSC_VER)
874: static void
875: yy_reduce_print (YYSTYPE *yyvsp, int yyrule)
876: #else
877: static void
878: yy_reduce_print (yyvsp, yyrule)
879: YYSTYPE *yyvsp;
880: int yyrule;
881: #endif
882: {
883: int yynrhs = yyr2[yyrule];
884: int yyi;
885: unsigned long int yylno = yyrline[yyrule];
886: YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",
887: yyrule - 1, yylno);
888: /* The symbols being reduced. */
889: for (yyi = 0; yyi < yynrhs; yyi++)
890: {
891: YYFPRINTF (stderr, " $%d = ", yyi + 1);
892: yy_symbol_print (stderr, yyrhs[yyprhs[yyrule] + yyi],
893: &(yyvsp[(yyi + 1) - (yynrhs)])
894: );
895: YYFPRINTF (stderr, "\n");
896: }
897: }
898:
899: # define YY_REDUCE_PRINT(Rule) \
900: do { \
901: if (yydebug) \
902: yy_reduce_print (yyvsp, Rule); \
903: } while (YYID (0))
904:
905: /* Nonzero means print parse trace. It is left uninitialized so that
906: multiple parsers can coexist. */
907: int yydebug;
908: #else /* !YYDEBUG */
909: # define YYDPRINTF(Args)
910: # define YY_SYMBOL_PRINT(Title, Type, Value, Location)
911: # define YY_STACK_PRINT(Bottom, Top)
912: # define YY_REDUCE_PRINT(Rule)
913: #endif /* !YYDEBUG */
914:
915:
916: /* YYINITDEPTH -- initial size of the parser's stacks. */
917: #ifndef YYINITDEPTH
918: # define YYINITDEPTH 200
919: #endif
920:
921: /* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
922: if the built-in stack extension method is used).
923:
924: Do not make this value too large; the results are undefined if
925: YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH)
926: evaluated with infinite-precision integer arithmetic. */
927:
928: #ifndef YYMAXDEPTH
929: # define YYMAXDEPTH 10000
930: #endif
931:
932:
933:
934: #if YYERROR_VERBOSE
935:
936: # ifndef yystrlen
937: # if defined __GLIBC__ && defined _STRING_H
938: # define yystrlen strlen
939: # else
940: /* Return the length of YYSTR. */
941: #if (defined __STDC__ || defined __C99__FUNC__ \
942: || defined __cplusplus || defined _MSC_VER)
943: static YYSIZE_T
944: yystrlen (const char *yystr)
945: #else
946: static YYSIZE_T
947: yystrlen (yystr)
948: const char *yystr;
949: #endif
950: {
951: YYSIZE_T yylen;
952: for (yylen = 0; yystr[yylen]; yylen++)
953: continue;
954: return yylen;
955: }
956: # endif
957: # endif
958:
959: # ifndef yystpcpy
960: # if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE
961: # define yystpcpy stpcpy
962: # else
963: /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
964: YYDEST. */
965: #if (defined __STDC__ || defined __C99__FUNC__ \
966: || defined __cplusplus || defined _MSC_VER)
967: static char *
968: yystpcpy (char *yydest, const char *yysrc)
969: #else
970: static char *
971: yystpcpy (yydest, yysrc)
972: char *yydest;
973: const char *yysrc;
974: #endif
975: {
976: char *yyd = yydest;
977: const char *yys = yysrc;
978:
979: while ((*yyd++ = *yys++) != '\0')
980: continue;
981:
982: return yyd - 1;
983: }
984: # endif
985: # endif
986:
987: # ifndef yytnamerr
988: /* Copy to YYRES the contents of YYSTR after stripping away unnecessary
989: quotes and backslashes, so that it's suitable for yyerror. The
990: heuristic is that double-quoting is unnecessary unless the string
991: contains an apostrophe, a comma, or backslash (other than
992: backslash-backslash). YYSTR is taken from yytname. If YYRES is
993: null, do not copy; instead, return the length of what the result
994: would have been. */
995: static YYSIZE_T
996: yytnamerr (char *yyres, const char *yystr)
997: {
998: if (*yystr == '"')
999: {
1000: YYSIZE_T yyn = 0;
1001: char const *yyp = yystr;
1002:
1003: for (;;)
1004: switch (*++yyp)
1005: {
1006: case '\'':
1007: case ',':
1008: goto do_not_strip_quotes;
1009:
1010: case '\\':
1011: if (*++yyp != '\\')
1012: goto do_not_strip_quotes;
1013: /* Fall through. */
1014: default:
1015: if (yyres)
1016: yyres[yyn] = *yyp;
1017: yyn++;
1018: break;
1019:
1020: case '"':
1021: if (yyres)
1022: yyres[yyn] = '\0';
1023: return yyn;
1024: }
1025: do_not_strip_quotes: ;
1026: }
1027:
1028: if (! yyres)
1029: return yystrlen (yystr);
1030:
1031: return yystpcpy (yyres, yystr) - yyres;
1032: }
1033: # endif
1034:
1035: /* Copy into YYRESULT an error message about the unexpected token
1036: YYCHAR while in state YYSTATE. Return the number of bytes copied,
1037: including the terminating null byte. If YYRESULT is null, do not
1038: copy anything; just return the number of bytes that would be
1039: copied. As a special case, return 0 if an ordinary "syntax error"
1040: message will do. Return YYSIZE_MAXIMUM if overflow occurs during
1041: size calculation. */
1042: static YYSIZE_T
1043: yysyntax_error (char *yyresult, int yystate, int yychar)
1044: {
1045: int yyn = yypact[yystate];
1046:
1047: if (! (YYPACT_NINF < yyn && yyn <= YYLAST))
1048: return 0;
1049: else
1050: {
1051: int yytype = YYTRANSLATE (yychar);
1052: YYSIZE_T yysize0 = yytnamerr (0, yytname[yytype]);
1053: YYSIZE_T yysize = yysize0;
1054: YYSIZE_T yysize1;
1055: int yysize_overflow = 0;
1056: enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
1057: char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
1058: int yyx;
1059:
1060: # if 0
1061: /* This is so xgettext sees the translatable formats that are
1062: constructed on the fly. */
1063: YY_("syntax error, unexpected %s");
1064: YY_("syntax error, unexpected %s, expecting %s");
1065: YY_("syntax error, unexpected %s, expecting %s or %s");
1066: YY_("syntax error, unexpected %s, expecting %s or %s or %s");
1067: YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s");
1068: # endif
1069: char *yyfmt;
1070: char const *yyf;
1071: static char const yyunexpected[] = "syntax error, unexpected %s";
1072: static char const yyexpecting[] = ", expecting %s";
1073: static char const yyor[] = " or %s";
1074: char yyformat[sizeof yyunexpected
1075: + sizeof yyexpecting - 1
1076: + ((YYERROR_VERBOSE_ARGS_MAXIMUM - 2)
1077: * (sizeof yyor - 1))];
1078: char const *yyprefix = yyexpecting;
1079:
1080: /* Start YYX at -YYN if negative to avoid negative indexes in
1081: YYCHECK. */
1082: int yyxbegin = yyn < 0 ? -yyn : 0;
1083:
1084: /* Stay within bounds of both yycheck and yytname. */
1085: int yychecklim = YYLAST - yyn + 1;
1086: int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
1087: int yycount = 1;
1088:
1089: yyarg[0] = yytname[yytype];
1090: yyfmt = yystpcpy (yyformat, yyunexpected);
1091:
1092: for (yyx = yyxbegin; yyx < yyxend; ++yyx)
1093: if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
1094: {
1095: if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
1096: {
1097: yycount = 1;
1098: yysize = yysize0;
1099: yyformat[sizeof yyunexpected - 1] = '\0';
1100: break;
1101: }
1102: yyarg[yycount++] = yytname[yyx];
1103: yysize1 = yysize + yytnamerr (0, yytname[yyx]);
1104: yysize_overflow |= (yysize1 < yysize);
1105: yysize = yysize1;
1106: yyfmt = yystpcpy (yyfmt, yyprefix);
1107: yyprefix = yyor;
1108: }
1109:
1110: yyf = YY_(yyformat);
1111: yysize1 = yysize + yystrlen (yyf);
1112: yysize_overflow |= (yysize1 < yysize);
1113: yysize = yysize1;
1114:
1115: if (yysize_overflow)
1116: return YYSIZE_MAXIMUM;
1117:
1118: if (yyresult)
1119: {
1120: /* Avoid sprintf, as that infringes on the user's name space.
1121: Don't have undefined behavior even if the translation
1122: produced a string with the wrong number of "%s"s. */
1123: char *yyp = yyresult;
1124: int yyi = 0;
1125: while ((*yyp = *yyf) != '\0')
1126: {
1127: if (*yyp == '%' && yyf[1] == 's' && yyi < yycount)
1128: {
1129: yyp += yytnamerr (yyp, yyarg[yyi++]);
1130: yyf += 2;
1131: }
1132: else
1133: {
1134: yyp++;
1135: yyf++;
1136: }
1137: }
1138: }
1139: return yysize;
1140: }
1141: }
1142: #endif /* YYERROR_VERBOSE */
1143:
1144:
1145: /*-----------------------------------------------.
1146: | Release the memory associated to this symbol. |
1147: `-----------------------------------------------*/
1148:
1149: /*ARGSUSED*/
1150: #if (defined __STDC__ || defined __C99__FUNC__ \
1151: || defined __cplusplus || defined _MSC_VER)
1152: static void
1153: yydestruct (const char *yymsg, int yytype, YYSTYPE *yyvaluep)
1154: #else
1155: static void
1156: yydestruct (yymsg, yytype, yyvaluep)
1157: const char *yymsg;
1158: int yytype;
1159: YYSTYPE *yyvaluep;
1160: #endif
1161: {
1162: YYUSE (yyvaluep);
1163:
1164: if (!yymsg)
1165: yymsg = "Deleting";
1166: YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp);
1167:
1168: switch (yytype)
1169: {
1170:
1171: default:
1172: break;
1173: }
1174: }
1175:
1176: /* Prevent warnings from -Wmissing-prototypes. */
1177: #ifdef YYPARSE_PARAM
1178: #if defined __STDC__ || defined __cplusplus
1179: int yyparse (void *YYPARSE_PARAM);
1180: #else
1181: int yyparse ();
1182: #endif
1183: #else /* ! YYPARSE_PARAM */
1184: #if defined __STDC__ || defined __cplusplus
1185: int yyparse (void);
1186: #else
1187: int yyparse ();
1188: #endif
1189: #endif /* ! YYPARSE_PARAM */
1190:
1191:
1192: /* The lookahead symbol. */
1193: int yychar;
1194:
1195: /* The semantic value of the lookahead symbol. */
1196: YYSTYPE yylval;
1197:
1198: /* Number of syntax errors so far. */
1199: int yynerrs;
1200:
1201:
1202:
1203: /*-------------------------.
1204: | yyparse or yypush_parse. |
1205: `-------------------------*/
1206:
1207: #ifdef YYPARSE_PARAM
1208: #if (defined __STDC__ || defined __C99__FUNC__ \
1209: || defined __cplusplus || defined _MSC_VER)
1210: int
1211: yyparse (void *YYPARSE_PARAM)
1212: #else
1213: int
1214: yyparse (YYPARSE_PARAM)
1215: void *YYPARSE_PARAM;
1216: #endif
1217: #else /* ! YYPARSE_PARAM */
1218: #if (defined __STDC__ || defined __C99__FUNC__ \
1219: || defined __cplusplus || defined _MSC_VER)
1220: int
1221: yyparse (void)
1222: #else
1223: int
1224: yyparse ()
1225:
1226: #endif
1227: #endif
1228: {
1229:
1230:
1231: int yystate;
1232: /* Number of tokens to shift before error messages enabled. */
1233: int yyerrstatus;
1234:
1235: /* The stacks and their tools:
1236: `yyss': related to states.
1237: `yyvs': related to semantic values.
1238:
1239: Refer to the stacks thru separate pointers, to allow yyoverflow
1240: to reallocate them elsewhere. */
1241:
1242: /* The state stack. */
1243: yytype_int16 yyssa[YYINITDEPTH];
1244: yytype_int16 *yyss;
1245: yytype_int16 *yyssp;
1246:
1247: /* The semantic value stack. */
1248: YYSTYPE yyvsa[YYINITDEPTH];
1249: YYSTYPE *yyvs;
1250: YYSTYPE *yyvsp;
1251:
1252: YYSIZE_T yystacksize;
1253:
1254: int yyn;
1255: int yyresult;
1256: /* Lookahead token as an internal (translated) token number. */
1257: int yytoken;
1258: /* The variables used to return semantic value and location from the
1259: action routines. */
1260: YYSTYPE yyval;
1261:
1262: #if YYERROR_VERBOSE
1263: /* Buffer for error messages, and its allocated size. */
1264: char yymsgbuf[128];
1265: char *yymsg = yymsgbuf;
1266: YYSIZE_T yymsg_alloc = sizeof yymsgbuf;
1267: #endif
1268:
1269: #define YYPOPSTACK(N) (yyvsp -= (N), yyssp -= (N))
1270:
1271: /* The number of symbols on the RHS of the reduced rule.
1272: Keep to zero when no symbol should be popped. */
1273: int yylen = 0;
1274:
1275: yytoken = 0;
1276: yyss = yyssa;
1277: yyvs = yyvsa;
1278: yystacksize = YYINITDEPTH;
1279:
1280: YYDPRINTF ((stderr, "Starting parse\n"));
1281:
1282: yystate = 0;
1283: yyerrstatus = 0;
1284: yynerrs = 0;
1285: yychar = YYEMPTY; /* Cause a token to be read. */
1286:
1287: /* Initialize stack pointers.
1288: Waste one element of value and location stack
1289: so that they stay on the same level as the state stack.
1290: The wasted elements are never initialized. */
1291: yyssp = yyss;
1292: yyvsp = yyvs;
1293:
1294: goto yysetstate;
1295:
1296: /*------------------------------------------------------------.
1297: | yynewstate -- Push a new state, which is found in yystate. |
1298: `------------------------------------------------------------*/
1299: yynewstate:
1300: /* In all cases, when you get here, the value and location stacks
1301: have just been pushed. So pushing a state here evens the stacks. */
1302: yyssp++;
1303:
1304: yysetstate:
1305: *yyssp = yystate;
1306:
1307: if (yyss + yystacksize - 1 <= yyssp)
1308: {
1309: /* Get the current used size of the three stacks, in elements. */
1310: YYSIZE_T yysize = yyssp - yyss + 1;
1311:
1312: #ifdef yyoverflow
1313: {
1314: /* Give user a chance to reallocate the stack. Use copies of
1315: these so that the &'s don't force the real ones into
1316: memory. */
1317: YYSTYPE *yyvs1 = yyvs;
1318: yytype_int16 *yyss1 = yyss;
1319:
1320: /* Each stack pointer address is followed by the size of the
1321: data in use in that stack, in bytes. This used to be a
1322: conditional around just the two extra args, but that might
1323: be undefined if yyoverflow is a macro. */
1324: yyoverflow (YY_("memory exhausted"),
1325: &yyss1, yysize * sizeof (*yyssp),
1326: &yyvs1, yysize * sizeof (*yyvsp),
1327: &yystacksize);
1328:
1329: yyss = yyss1;
1330: yyvs = yyvs1;
1331: }
1332: #else /* no yyoverflow */
1333: # ifndef YYSTACK_RELOCATE
1334: goto yyexhaustedlab;
1335: # else
1336: /* Extend the stack our own way. */
1337: if (YYMAXDEPTH <= yystacksize)
1338: goto yyexhaustedlab;
1339: yystacksize *= 2;
1340: if (YYMAXDEPTH < yystacksize)
1341: yystacksize = YYMAXDEPTH;
1342:
1343: {
1344: yytype_int16 *yyss1 = yyss;
1345: union yyalloc *yyptr =
1346: (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
1347: if (! yyptr)
1348: goto yyexhaustedlab;
1349: YYSTACK_RELOCATE (yyss_alloc, yyss);
1350: YYSTACK_RELOCATE (yyvs_alloc, yyvs);
1351: # undef YYSTACK_RELOCATE
1352: if (yyss1 != yyssa)
1353: YYSTACK_FREE (yyss1);
1354: }
1355: # endif
1356: #endif /* no yyoverflow */
1357:
1358: yyssp = yyss + yysize - 1;
1359: yyvsp = yyvs + yysize - 1;
1360:
1361: YYDPRINTF ((stderr, "Stack size increased to %lu\n",
1362: (unsigned long int) yystacksize));
1363:
1364: if (yyss + yystacksize - 1 <= yyssp)
1365: YYABORT;
1366: }
1367:
1368: YYDPRINTF ((stderr, "Entering state %d\n", yystate));
1369:
1370: if (yystate == YYFINAL)
1371: YYACCEPT;
1372:
1373: goto yybackup;
1374:
1375: /*-----------.
1376: | yybackup. |
1377: `-----------*/
1378: yybackup:
1379:
1380: /* Do appropriate processing given the current state. Read a
1381: lookahead token if we need one and don't already have one. */
1382:
1383: /* First try to decide what to do without reference to lookahead token. */
1384: yyn = yypact[yystate];
1385: if (yyn == YYPACT_NINF)
1386: goto yydefault;
1387:
1388: /* Not known => get a lookahead token if don't already have one. */
1389:
1390: /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */
1391: if (yychar == YYEMPTY)
1392: {
1393: YYDPRINTF ((stderr, "Reading a token: "));
1394: yychar = YYLEX;
1395: }
1396:
1397: if (yychar <= YYEOF)
1398: {
1399: yychar = yytoken = YYEOF;
1400: YYDPRINTF ((stderr, "Now at end of input.\n"));
1401: }
1402: else
1403: {
1404: yytoken = YYTRANSLATE (yychar);
1405: YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
1406: }
1407:
1408: /* If the proper action on seeing token YYTOKEN is to reduce or to
1409: detect an error, take that action. */
1410: yyn += yytoken;
1411: if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)
1412: goto yydefault;
1413: yyn = yytable[yyn];
1414: if (yyn <= 0)
1415: {
1416: if (yyn == 0 || yyn == YYTABLE_NINF)
1417: goto yyerrlab;
1418: yyn = -yyn;
1419: goto yyreduce;
1420: }
1421:
1422: /* Count tokens shifted since error; after three, turn off error
1423: status. */
1424: if (yyerrstatus)
1425: yyerrstatus--;
1426:
1427: /* Shift the lookahead token. */
1428: YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
1429:
1430: /* Discard the shifted token. */
1431: yychar = YYEMPTY;
1432:
1433: yystate = yyn;
1434: *++yyvsp = yylval;
1435:
1436: goto yynewstate;
1437:
1438:
1439: /*-----------------------------------------------------------.
1440: | yydefault -- do the default action for the current state. |
1441: `-----------------------------------------------------------*/
1442: yydefault:
1443: yyn = yydefact[yystate];
1444: if (yyn == 0)
1445: goto yyerrlab;
1446: goto yyreduce;
1447:
1448:
1449: /*-----------------------------.
1450: | yyreduce -- Do a reduction. |
1451: `-----------------------------*/
1452: yyreduce:
1453: /* yyn is the number of a rule to reduce with. */
1454: yylen = yyr2[yyn];
1455:
1456: /* If YYLEN is nonzero, implement the default value of the action:
1457: `$$ = $1'.
1458:
1459: Otherwise, the following line sets YYVAL to garbage.
1460: This behavior is undocumented and Bison
1461: users should not rely upon it. Assigning to YYVAL
1462: unconditionally makes the parser a bit smaller, and it avoids a
1463: GCC warning that YYVAL may be used uninitialized. */
1464: yyval = yyvsp[1-yylen];
1465:
1466:
1467: YY_REDUCE_PRINT (yyn);
1468: switch (yyn)
1469: {
1470: case 2:
1471:
1472: /* Line 1455 of yacc.c */
1473: #line 151 "policy_parse.y"
1474: {
1475: p_dir = (yyvsp[(1) - (2)].num);
1476: p_type = (yyvsp[(2) - (2)].num);
1477:
1478: #ifdef HAVE_PFKEY_POLICY_PRIORITY
1479: p_priority = PRIORITY_DEFAULT;
1480: #else
1481: p_priority = 0;
1482: #endif
1483:
1484: if (init_x_policy())
1485: return -1;
1486: }
1487: break;
1488:
1489: case 4:
1490:
1491: /* Line 1455 of yacc.c */
1492: #line 166 "policy_parse.y"
1493: {
1494: p_dir = (yyvsp[(1) - (4)].num);
1495: p_type = (yyvsp[(4) - (4)].num);
1496: p_priority_offset = -atol((yyvsp[(3) - (4)].val).buf);
1497:
1498: errno = 0;
1499: if (errno != 0 || p_priority_offset < INT32_MIN)
1500: {
1501: __ipsec_errcode = EIPSEC_INVAL_PRIORITY_OFFSET;
1502: return -1;
1503: }
1504:
1505: p_priority = PRIORITY_DEFAULT + (u_int32_t) p_priority_offset;
1506:
1507: if (init_x_policy())
1508: return -1;
1509: }
1510: break;
1511:
1512: case 6:
1513:
1514: /* Line 1455 of yacc.c */
1515: #line 185 "policy_parse.y"
1516: {
1517: p_dir = (yyvsp[(1) - (5)].num);
1518: p_type = (yyvsp[(5) - (5)].num);
1519:
1520: errno = 0;
1521: p_priority_offset = atol((yyvsp[(4) - (5)].val).buf);
1522:
1523: if (errno != 0 || p_priority_offset > INT32_MAX)
1524: {
1525: __ipsec_errcode = EIPSEC_INVAL_PRIORITY_OFFSET;
1526: return -1;
1527: }
1528:
1529: /* negative input value means lower priority, therefore higher
1530: actual value so that is closer to the end of the list */
1531: p_priority = PRIORITY_DEFAULT + (u_int32_t) p_priority_offset;
1532:
1533: if (init_x_policy())
1534: return -1;
1535: }
1536: break;
1537:
1538: case 8:
1539:
1540: /* Line 1455 of yacc.c */
1541: #line 207 "policy_parse.y"
1542: {
1543: p_dir = (yyvsp[(1) - (4)].num);
1544: p_type = (yyvsp[(4) - (4)].num);
1545:
1546: p_priority = (yyvsp[(3) - (4)].num32);
1547:
1548: if (init_x_policy())
1549: return -1;
1550: }
1551: break;
1552:
1553: case 10:
1554:
1555: /* Line 1455 of yacc.c */
1556: #line 218 "policy_parse.y"
1557: {
1558: p_dir = (yyvsp[(1) - (6)].num);
1559: p_type = (yyvsp[(6) - (6)].num);
1560:
1561: errno = 0;
1562: p_priority_offset = atol((yyvsp[(5) - (6)].val).buf);
1563:
1564: if (errno != 0 || p_priority_offset > PRIORITY_OFFSET_NEGATIVE_MAX)
1565: {
1566: __ipsec_errcode = EIPSEC_INVAL_PRIORITY_BASE_OFFSET;
1567: return -1;
1568: }
1569:
1570: /* adding value means higher priority, therefore lower
1571: actual value so that is closer to the beginning of the list */
1572: p_priority = (yyvsp[(3) - (6)].num32) - (u_int32_t) p_priority_offset;
1573:
1574: if (init_x_policy())
1575: return -1;
1576: }
1577: break;
1578:
1579: case 12:
1580:
1581: /* Line 1455 of yacc.c */
1582: #line 240 "policy_parse.y"
1583: {
1584: p_dir = (yyvsp[(1) - (6)].num);
1585: p_type = (yyvsp[(6) - (6)].num);
1586:
1587: errno = 0;
1588: p_priority_offset = atol((yyvsp[(5) - (6)].val).buf);
1589:
1590: if (errno != 0 || p_priority_offset > PRIORITY_OFFSET_POSITIVE_MAX)
1591: {
1592: __ipsec_errcode = EIPSEC_INVAL_PRIORITY_BASE_OFFSET;
1593: return -1;
1594: }
1595:
1596: /* subtracting value means lower priority, therefore higher
1597: actual value so that is closer to the end of the list */
1598: p_priority = (yyvsp[(3) - (6)].num32) + (u_int32_t) p_priority_offset;
1599:
1600: if (init_x_policy())
1601: return -1;
1602: }
1603: break;
1604:
1605: case 14:
1606:
1607: /* Line 1455 of yacc.c */
1608: #line 262 "policy_parse.y"
1609: {
1610: p_dir = (yyvsp[(1) - (1)].num);
1611: p_type = 0; /* ignored it by kernel */
1612:
1613: p_priority = 0;
1614:
1615: if (init_x_policy())
1616: return -1;
1617: }
1618: break;
1619:
1620: case 16:
1621:
1622: /* Line 1455 of yacc.c */
1623: #line 275 "policy_parse.y"
1624: {
1625: if (rule_check() < 0)
1626: return -1;
1627:
1628: if (set_x_request(p_src, p_dst) < 0)
1629: return -1;
1630:
1631: policy_parse_request_init();
1632: }
1633: break;
1634:
1635: case 23:
1636:
1637: /* Line 1455 of yacc.c */
1638: #line 293 "policy_parse.y"
1639: {
1640: __ipsec_errcode = EIPSEC_FEW_ARGUMENTS;
1641: return -1;
1642: }
1643: break;
1644:
1645: case 24:
1646:
1647: /* Line 1455 of yacc.c */
1648: #line 297 "policy_parse.y"
1649: {
1650: __ipsec_errcode = EIPSEC_FEW_ARGUMENTS;
1651: return -1;
1652: }
1653: break;
1654:
1655: case 25:
1656:
1657: /* Line 1455 of yacc.c */
1658: #line 304 "policy_parse.y"
1659: { p_protocol = (yyvsp[(1) - (1)].num); }
1660: break;
1661:
1662: case 26:
1663:
1664: /* Line 1455 of yacc.c */
1665: #line 308 "policy_parse.y"
1666: { p_mode = (yyvsp[(1) - (1)].num); }
1667: break;
1668:
1669: case 27:
1670:
1671: /* Line 1455 of yacc.c */
1672: #line 312 "policy_parse.y"
1673: {
1674: p_level = (yyvsp[(1) - (1)].num);
1675: p_reqid = 0;
1676: }
1677: break;
1678:
1679: case 28:
1680:
1681: /* Line 1455 of yacc.c */
1682: #line 316 "policy_parse.y"
1683: {
1684: p_level = IPSEC_LEVEL_UNIQUE;
1685: p_reqid = atol((yyvsp[(1) - (1)].val).buf); /* atol() is good. */
1686: }
1687: break;
1688:
1689: case 29:
1690:
1691: /* Line 1455 of yacc.c */
1692: #line 323 "policy_parse.y"
1693: {
1694: p_src = parse_sockaddr(&(yyvsp[(1) - (1)].val), NULL);
1695: if (p_src == NULL)
1696: return -1;
1697: }
1698: break;
1699:
1700: case 30:
1701:
1702: /* Line 1455 of yacc.c */
1703: #line 329 "policy_parse.y"
1704: {
1705: p_dst = parse_sockaddr(&(yyvsp[(4) - (4)].val), NULL);
1706: if (p_dst == NULL)
1707: return -1;
1708: }
1709: break;
1710:
1711: case 31:
1712:
1713: /* Line 1455 of yacc.c */
1714: #line 334 "policy_parse.y"
1715: {
1716: p_src = parse_sockaddr(&(yyvsp[(1) - (2)].val), &(yyvsp[(2) - (2)].val));
1717: if (p_src == NULL)
1718: return -1;
1719: }
1720: break;
1721:
1722: case 32:
1723:
1724: /* Line 1455 of yacc.c */
1725: #line 340 "policy_parse.y"
1726: {
1727: p_dst = parse_sockaddr(&(yyvsp[(5) - (6)].val), &(yyvsp[(6) - (6)].val));
1728: if (p_dst == NULL)
1729: return -1;
1730: }
1731: break;
1732:
1733: case 33:
1734:
1735: /* Line 1455 of yacc.c */
1736: #line 345 "policy_parse.y"
1737: {
1738: if (p_dir != IPSEC_DIR_OUTBOUND) {
1739: __ipsec_errcode = EIPSEC_INVAL_DIR;
1740: return -1;
1741: }
1742: }
1743: break;
1744:
1745: case 34:
1746:
1747: /* Line 1455 of yacc.c */
1748: #line 351 "policy_parse.y"
1749: {
1750: if (p_dir != IPSEC_DIR_INBOUND) {
1751: __ipsec_errcode = EIPSEC_INVAL_DIR;
1752: return -1;
1753: }
1754: }
1755: break;
1756:
1757:
1758:
1759: /* Line 1455 of yacc.c */
1760: #line 1761 "policy_parse.c"
1761: default: break;
1762: }
1763: YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc);
1764:
1765: YYPOPSTACK (yylen);
1766: yylen = 0;
1767: YY_STACK_PRINT (yyss, yyssp);
1768:
1769: *++yyvsp = yyval;
1770:
1771: /* Now `shift' the result of the reduction. Determine what state
1772: that goes to, based on the state we popped back to and the rule
1773: number reduced by. */
1774:
1775: yyn = yyr1[yyn];
1776:
1777: yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;
1778: if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp)
1779: yystate = yytable[yystate];
1780: else
1781: yystate = yydefgoto[yyn - YYNTOKENS];
1782:
1783: goto yynewstate;
1784:
1785:
1786: /*------------------------------------.
1787: | yyerrlab -- here on detecting error |
1788: `------------------------------------*/
1789: yyerrlab:
1790: /* If not already recovering from an error, report this error. */
1791: if (!yyerrstatus)
1792: {
1793: ++yynerrs;
1794: #if ! YYERROR_VERBOSE
1795: yyerror (YY_("syntax error"));
1796: #else
1797: {
1798: YYSIZE_T yysize = yysyntax_error (0, yystate, yychar);
1799: if (yymsg_alloc < yysize && yymsg_alloc < YYSTACK_ALLOC_MAXIMUM)
1800: {
1801: YYSIZE_T yyalloc = 2 * yysize;
1802: if (! (yysize <= yyalloc && yyalloc <= YYSTACK_ALLOC_MAXIMUM))
1803: yyalloc = YYSTACK_ALLOC_MAXIMUM;
1804: if (yymsg != yymsgbuf)
1805: YYSTACK_FREE (yymsg);
1806: yymsg = (char *) YYSTACK_ALLOC (yyalloc);
1807: if (yymsg)
1808: yymsg_alloc = yyalloc;
1809: else
1810: {
1811: yymsg = yymsgbuf;
1812: yymsg_alloc = sizeof yymsgbuf;
1813: }
1814: }
1815:
1816: if (0 < yysize && yysize <= yymsg_alloc)
1817: {
1818: (void) yysyntax_error (yymsg, yystate, yychar);
1819: yyerror (yymsg);
1820: }
1821: else
1822: {
1823: yyerror (YY_("syntax error"));
1824: if (yysize != 0)
1825: goto yyexhaustedlab;
1826: }
1827: }
1828: #endif
1829: }
1830:
1831:
1832:
1833: if (yyerrstatus == 3)
1834: {
1835: /* If just tried and failed to reuse lookahead token after an
1836: error, discard it. */
1837:
1838: if (yychar <= YYEOF)
1839: {
1840: /* Return failure if at end of input. */
1841: if (yychar == YYEOF)
1842: YYABORT;
1843: }
1844: else
1845: {
1846: yydestruct ("Error: discarding",
1847: yytoken, &yylval);
1848: yychar = YYEMPTY;
1849: }
1850: }
1851:
1852: /* Else will try to reuse lookahead token after shifting the error
1853: token. */
1854: goto yyerrlab1;
1855:
1856:
1857: /*---------------------------------------------------.
1858: | yyerrorlab -- error raised explicitly by YYERROR. |
1859: `---------------------------------------------------*/
1860: yyerrorlab:
1861:
1862: /* Pacify compilers like GCC when the user code never invokes
1863: YYERROR and the label yyerrorlab therefore never appears in user
1864: code. */
1865: if (/*CONSTCOND*/ 0)
1866: goto yyerrorlab;
1867:
1868: /* Do not reclaim the symbols of the rule which action triggered
1869: this YYERROR. */
1870: YYPOPSTACK (yylen);
1871: yylen = 0;
1872: YY_STACK_PRINT (yyss, yyssp);
1873: yystate = *yyssp;
1874: goto yyerrlab1;
1875:
1876:
1877: /*-------------------------------------------------------------.
1878: | yyerrlab1 -- common code for both syntax error and YYERROR. |
1879: `-------------------------------------------------------------*/
1880: yyerrlab1:
1881: yyerrstatus = 3; /* Each real token shifted decrements this. */
1882:
1883: for (;;)
1884: {
1885: yyn = yypact[yystate];
1886: if (yyn != YYPACT_NINF)
1887: {
1888: yyn += YYTERROR;
1889: if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
1890: {
1891: yyn = yytable[yyn];
1892: if (0 < yyn)
1893: break;
1894: }
1895: }
1896:
1897: /* Pop the current state because it cannot handle the error token. */
1898: if (yyssp == yyss)
1899: YYABORT;
1900:
1901:
1902: yydestruct ("Error: popping",
1903: yystos[yystate], yyvsp);
1904: YYPOPSTACK (1);
1905: yystate = *yyssp;
1906: YY_STACK_PRINT (yyss, yyssp);
1907: }
1908:
1909: *++yyvsp = yylval;
1910:
1911:
1912: /* Shift the error token. */
1913: YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
1914:
1915: yystate = yyn;
1916: goto yynewstate;
1917:
1918:
1919: /*-------------------------------------.
1920: | yyacceptlab -- YYACCEPT comes here. |
1921: `-------------------------------------*/
1922: yyacceptlab:
1923: yyresult = 0;
1924: goto yyreturn;
1925:
1926: /*-----------------------------------.
1927: | yyabortlab -- YYABORT comes here. |
1928: `-----------------------------------*/
1929: yyabortlab:
1930: yyresult = 1;
1931: goto yyreturn;
1932:
1933: #if !defined(yyoverflow) || YYERROR_VERBOSE
1934: /*-------------------------------------------------.
1935: | yyexhaustedlab -- memory exhaustion comes here. |
1936: `-------------------------------------------------*/
1937: yyexhaustedlab:
1938: yyerror (YY_("memory exhausted"));
1939: yyresult = 2;
1940: /* Fall through. */
1941: #endif
1942:
1943: yyreturn:
1944: if (yychar != YYEMPTY)
1945: yydestruct ("Cleanup: discarding lookahead",
1946: yytoken, &yylval);
1947: /* Do not reclaim the symbols of the rule which action triggered
1948: this YYABORT or YYACCEPT. */
1949: YYPOPSTACK (yylen);
1950: YY_STACK_PRINT (yyss, yyssp);
1951: while (yyssp != yyss)
1952: {
1953: yydestruct ("Cleanup: popping",
1954: yystos[*yyssp], yyvsp);
1955: YYPOPSTACK (1);
1956: }
1957: #ifndef yyoverflow
1958: if (yyss != yyssa)
1959: YYSTACK_FREE (yyss);
1960: #endif
1961: #if YYERROR_VERBOSE
1962: if (yymsg != yymsgbuf)
1963: YYSTACK_FREE (yymsg);
1964: #endif
1965: /* Make sure YYID is used. */
1966: return YYID (yyresult);
1967: }
1968:
1969:
1970:
1971: /* Line 1675 of yacc.c */
1972: #line 362 "policy_parse.y"
1973:
1974:
1975: void
1976: yyerror(msg)
1977: char *msg;
1978: {
1979: fprintf(stderr, "libipsec: %s while parsing \"%s\"\n",
1980: msg, __libipsectext);
1981:
1982: return;
1983: }
1984:
1985: static struct sockaddr *
1986: parse_sockaddr(addrbuf, portbuf)
1987: struct _val *addrbuf;
1988: struct _val *portbuf;
1989: {
1990: struct addrinfo hints, *res;
1991: char *addr;
1992: char *serv = NULL;
1993: int error;
1994: struct sockaddr *newaddr = NULL;
1995:
1996: if ((addr = malloc(addrbuf->len + 1)) == NULL) {
1997: yyerror("malloc failed");
1998: __ipsec_set_strerror(strerror(errno));
1999: return NULL;
2000: }
2001:
2002: if (portbuf && ((serv = malloc(portbuf->len + 1)) == NULL)) {
2003: free(addr);
2004: yyerror("malloc failed");
2005: __ipsec_set_strerror(strerror(errno));
2006: return NULL;
2007: }
2008:
2009: strncpy(addr, addrbuf->buf, addrbuf->len);
2010: addr[addrbuf->len] = '\0';
2011:
2012: if (portbuf) {
2013: strncpy(serv, portbuf->buf, portbuf->len);
2014: serv[portbuf->len] = '\0';
2015: }
2016:
2017: memset(&hints, 0, sizeof(hints));
2018: hints.ai_family = PF_UNSPEC;
2019: hints.ai_flags = AI_NUMERICHOST;
2020: hints.ai_socktype = SOCK_DGRAM;
2021: error = getaddrinfo(addr, serv, &hints, &res);
2022: free(addr);
2023: if (serv != NULL)
2024: free(serv);
2025: if (error != 0) {
2026: yyerror("invalid IP address");
2027: __ipsec_set_strerror(gai_strerror(error));
2028: return NULL;
2029: }
2030:
2031: if (res->ai_addr == NULL) {
2032: yyerror("invalid IP address");
2033: __ipsec_set_strerror(gai_strerror(error));
2034: return NULL;
2035: }
2036:
2037: newaddr = malloc(res->ai_addrlen);
2038: if (newaddr == NULL) {
2039: __ipsec_errcode = EIPSEC_NO_BUFS;
2040: freeaddrinfo(res);
2041: return NULL;
2042: }
2043: memcpy(newaddr, res->ai_addr, res->ai_addrlen);
2044:
2045: freeaddrinfo(res);
2046:
2047: __ipsec_errcode = EIPSEC_NO_ERROR;
2048: return newaddr;
2049: }
2050:
2051: static int
2052: rule_check()
2053: {
2054: if (p_type == IPSEC_POLICY_IPSEC) {
2055: if (p_protocol == IPPROTO_IP) {
2056: __ipsec_errcode = EIPSEC_NO_PROTO;
2057: return -1;
2058: }
2059:
2060: if (p_mode != IPSEC_MODE_TRANSPORT
2061: && p_mode != IPSEC_MODE_TUNNEL) {
2062: __ipsec_errcode = EIPSEC_INVAL_MODE;
2063: return -1;
2064: }
2065:
2066: if (p_src == NULL && p_dst == NULL) {
2067: if (p_mode != IPSEC_MODE_TRANSPORT) {
2068: __ipsec_errcode = EIPSEC_INVAL_ADDRESS;
2069: return -1;
2070: }
2071: }
2072: else if (p_src->sa_family != p_dst->sa_family) {
2073: __ipsec_errcode = EIPSEC_FAMILY_MISMATCH;
2074: return -1;
2075: }
2076: }
2077:
2078: __ipsec_errcode = EIPSEC_NO_ERROR;
2079: return 0;
2080: }
2081:
2082: static int
2083: init_x_policy()
2084: {
2085: struct sadb_x_policy *p;
2086:
2087: if (pbuf) {
2088: free(pbuf);
2089: tlen = 0;
2090: }
2091: pbuf = malloc(sizeof(struct sadb_x_policy));
2092: if (pbuf == NULL) {
2093: __ipsec_errcode = EIPSEC_NO_BUFS;
2094: return -1;
2095: }
2096: tlen = sizeof(struct sadb_x_policy);
2097:
2098: memset(pbuf, 0, tlen);
2099: p = (struct sadb_x_policy *)pbuf;
2100: p->sadb_x_policy_len = 0; /* must update later */
2101: p->sadb_x_policy_exttype = SADB_X_EXT_POLICY;
2102: p->sadb_x_policy_type = p_type;
2103: p->sadb_x_policy_dir = p_dir;
2104: p->sadb_x_policy_id = 0;
2105: #ifdef HAVE_PFKEY_POLICY_PRIORITY
2106: p->sadb_x_policy_priority = p_priority;
2107: #else
2108: /* fail if given a priority and libipsec was not compiled with
2109: priority support */
2110: if (p_priority != 0)
2111: {
2112: __ipsec_errcode = EIPSEC_PRIORITY_NOT_COMPILED;
2113: return -1;
2114: }
2115: #endif
2116:
2117: offset = tlen;
2118:
2119: __ipsec_errcode = EIPSEC_NO_ERROR;
2120: return 0;
2121: }
2122:
2123: static int
2124: set_x_request(src, dst)
2125: struct sockaddr *src, *dst;
2126: {
2127: struct sadb_x_ipsecrequest *p;
2128: int reqlen;
2129: u_int8_t *n;
2130:
2131: reqlen = sizeof(*p)
2132: + (src ? sysdep_sa_len(src) : 0)
2133: + (dst ? sysdep_sa_len(dst) : 0);
2134: tlen += reqlen; /* increment to total length */
2135:
2136: n = realloc(pbuf, tlen);
2137: if (n == NULL) {
2138: __ipsec_errcode = EIPSEC_NO_BUFS;
2139: return -1;
2140: }
2141: pbuf = n;
2142:
2143: p = (struct sadb_x_ipsecrequest *)&pbuf[offset];
2144: p->sadb_x_ipsecrequest_len = reqlen;
2145: p->sadb_x_ipsecrequest_proto = p_protocol;
2146: p->sadb_x_ipsecrequest_mode = p_mode;
2147: p->sadb_x_ipsecrequest_level = p_level;
2148: p->sadb_x_ipsecrequest_reqid = p_reqid;
2149: offset += sizeof(*p);
2150:
2151: if (set_sockaddr(src) || set_sockaddr(dst))
2152: return -1;
2153:
2154: __ipsec_errcode = EIPSEC_NO_ERROR;
2155: return 0;
2156: }
2157:
2158: static int
2159: set_sockaddr(addr)
2160: struct sockaddr *addr;
2161: {
2162: if (addr == NULL) {
2163: __ipsec_errcode = EIPSEC_NO_ERROR;
2164: return 0;
2165: }
2166:
2167: /* tlen has already incremented */
2168:
2169: memcpy(&pbuf[offset], addr, sysdep_sa_len(addr));
2170:
2171: offset += sysdep_sa_len(addr);
2172:
2173: __ipsec_errcode = EIPSEC_NO_ERROR;
2174: return 0;
2175: }
2176:
2177: static void
2178: policy_parse_request_init()
2179: {
2180: p_protocol = IPPROTO_IP;
2181: p_mode = IPSEC_MODE_ANY;
2182: p_level = IPSEC_LEVEL_DEFAULT;
2183: p_reqid = 0;
2184: if (p_src != NULL) {
2185: free(p_src);
2186: p_src = NULL;
2187: }
2188: if (p_dst != NULL) {
2189: free(p_dst);
2190: p_dst = NULL;
2191: }
2192:
2193: return;
2194: }
2195:
2196: static void *
2197: policy_parse(msg, msglen)
2198: const char *msg;
2199: int msglen;
2200: {
2201: int error;
2202:
2203: pbuf = NULL;
2204: tlen = 0;
2205:
2206: /* initialize */
2207: p_dir = IPSEC_DIR_INVALID;
2208: p_type = IPSEC_POLICY_DISCARD;
2209: policy_parse_request_init();
2210: __policy__strbuffer__init__(msg);
2211:
2212: error = yyparse(); /* it must be set errcode. */
2213: __policy__strbuffer__free__();
2214:
2215: if (error) {
2216: if (pbuf != NULL)
2217: free(pbuf);
2218: return NULL;
2219: }
2220:
2221: /* update total length */
2222: ((struct sadb_x_policy *)pbuf)->sadb_x_policy_len = PFKEY_UNIT64(tlen);
2223:
2224: __ipsec_errcode = EIPSEC_NO_ERROR;
2225:
2226: return pbuf;
2227: }
2228:
2229: ipsec_policy_t
2230: ipsec_set_policy(msg, msglen)
2231: __ipsec_const char *msg;
2232: int msglen;
2233: {
2234: caddr_t policy;
2235:
2236: policy = policy_parse(msg, msglen);
2237: if (policy == NULL) {
2238: if (__ipsec_errcode == EIPSEC_NO_ERROR)
2239: __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
2240: return NULL;
2241: }
2242:
2243: __ipsec_errcode = EIPSEC_NO_ERROR;
2244: return policy;
2245: }
2246:
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