Bug Summary

File:src/usr.sbin/dvmrpd/obj/parse.c
Warning:line 962, column 18
Use of zero-allocated memory

Annotated Source Code

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clang -cc1 -cc1 -triple amd64-unknown-openbsd7.0 -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name parse.c -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 1 -pic-is-pie -mframe-pointer=all -relaxed-aliasing -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -target-feature +retpoline-indirect-calls -target-feature +retpoline-indirect-branches -tune-cpu generic -debugger-tuning=gdb -fcoverage-compilation-dir=/usr/src/usr.sbin/dvmrpd/obj -resource-dir /usr/local/lib/clang/13.0.0 -I /usr/src/usr.sbin/dvmrpd -internal-isystem /usr/local/lib/clang/13.0.0/include -internal-externc-isystem /usr/include -O2 -fdebug-compilation-dir=/usr/src/usr.sbin/dvmrpd/obj -ferror-limit 19 -fwrapv -D_RET_PROTECTOR -ret-protector -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-valloc -fno-builtin-free -fno-builtin-strdup -fno-builtin-strndup -analyzer-output=html -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /home/ben/Projects/vmm/scan-build/2022-01-12-194120-40624-1 -x c parse.c
1#include <stdlib.h>
2#include <string.h>
3#define YYBYACC1 1
4#define YYMAJOR1 1
5#define YYMINOR9 9
6#define YYLEXyylex() yylex()
7#define YYEMPTY-1 -1
8#define yyclearin(yychar=(-1)) (yychar=(YYEMPTY-1))
9#define yyerrok(yyerrflag=0) (yyerrflag=0)
10#define YYRECOVERING()(yyerrflag!=0) (yyerrflag!=0)
11#define YYPREFIX"yy" "yy"
12#line 25 "/usr/src/usr.sbin/dvmrpd/parse.y"
13#include <sys/types.h>
14#include <sys/time.h>
15#include <sys/stat.h>
16#include <sys/socket.h>
17#include <netinet/in.h>
18#include <arpa/inet.h>
19#include <net/if.h>
20#include <ctype.h>
21#include <err.h>
22#include <limits.h>
23#include <unistd.h>
24#include <errno(*__errno()).h>
25#include <stdarg.h>
26#include <stdio.h>
27#include <string.h>
28#include <syslog.h>
29
30#include "igmp.h"
31#include "dvmrp.h"
32#include "dvmrpd.h"
33#include "dvmrpe.h"
34#include "log.h"
35
36TAILQ_HEAD(files, file)struct files { struct file *tqh_first; struct file **tqh_last
; } files = TAILQ_HEAD_INITIALIZER(files){ ((void *)0), &(files).tqh_first };
37static struct file {
38 TAILQ_ENTRY(file)struct { struct file *tqe_next; struct file **tqe_prev; } entry;
39 FILE *stream;
40 char *name;
41 int lineno;
42 int errors;
43} *file, *topfile;
44struct file *pushfile(const char *, int);
45int popfile(void);
46int check_file_secrecy(int, const char *);
47int yyparse(void);
48int yylex(void);
49int yyerror(const char *, ...)
50 __attribute__((__format__ (printf, 1, 2)))
51 __attribute__((__nonnull__ (1)));
52int kw_cmp(const void *, const void *);
53int lookup(char *);
54int lgetc(int);
55int lungetc(int);
56int findeol(void);
57
58TAILQ_HEAD(symhead, sym)struct symhead { struct sym *tqh_first; struct sym **tqh_last
; } symhead = TAILQ_HEAD_INITIALIZER(symhead){ ((void *)0), &(symhead).tqh_first };
59struct sym {
60 TAILQ_ENTRY(sym)struct { struct sym *tqe_next; struct sym **tqe_prev; } entry;
61 int used;
62 int persist;
63 char *nam;
64 char *val;
65};
66int symset(const char *, const char *, int);
67char *symget(const char *);
68
69static struct dvmrpd_conf *conf;
70char *start_state;
71struct iface *iface = NULL((void *)0);
72
73static struct {
74 u_int32_t probe_interval;
75 u_int32_t query_interval;
76 u_int32_t query_resp_interval;
77 u_int32_t startup_query_interval;
78 u_int32_t startup_query_cnt;
79 u_int32_t last_member_query_interval;
80 u_int32_t last_member_query_cnt;
81 u_int32_t dead_interval;
82 u_int16_t metric;
83 u_int8_t robustness;
84 u_int8_t igmp_version;
85} *defs, *grdefs, globaldefs, groupdefs, ifacedefs;
86
87void clear_config(struct dvmrpd_conf *xconf);
88struct iface *conf_get_if(struct kif *);
89struct iface *new_group(void);
90
91typedef struct {
92 union {
93 int64_t number;
94 char *string;
95 } v;
96 int lineno;
97} YYSTYPE;
98
99#line 100 "parse.c"
100#define INTERFACE257 257
101#define FIBUPDATE258 258
102#define GROUP259 259
103#define METRIC260 260
104#define PASSIVE261 261
105#define ROBUSTNESS262 262
106#define QUERYINTERVAL263 263
107#define QUERYRESPINTERVAL264 264
108#define STARTUPQUERYINTERVAL265 265
109#define STARTUPQUERYCNT266 266
110#define LASTMEMBERQUERYINTERVAL267 267
111#define LASTMEMBERQUERYCNT268 268
112#define IGMPVERSION269 269
113#define ERROR270 270
114#define STRING271 271
115#define NUMBER272 272
116#define YYERRCODE256 256
117const short yylhs[] =
118 { -1,
119 0, 0, 0, 0, 0, 0, 0, 2, 2, 1,
120 4, 3, 3, 7, 7, 7, 7, 7, 7, 7,
121 7, 7, 8, 8, 9, 11, 5, 10, 10, 10,
122 12, 12, 13, 13, 15, 6, 14, 14, 16, 16,
123 16,
124};
125const short yylen[] =
126 { 2,
127 0, 2, 3, 3, 3, 3, 3, 2, 1, 1,
128 3, 2, 1, 2, 2, 2, 2, 2, 2, 2,
129 2, 2, 2, 0, 2, 0, 4, 4, 3, 0,
130 2, 1, 2, 2, 0, 7, 2, 1, 2, 2,
131 2,
132};
133const short yydefred[] =
134 { 1,
135 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
136 0, 0, 0, 0, 0, 2, 0, 0, 0, 0,
137 13, 7, 26, 10, 12, 0, 0, 16, 19, 17,
138 18, 21, 20, 15, 14, 22, 0, 3, 4, 5,
139 6, 0, 23, 0, 9, 0, 0, 27, 35, 8,
140 0, 0, 0, 29, 0, 0, 32, 0, 0, 0,
141 0, 38, 0, 33, 34, 28, 31, 41, 39, 40,
142 36, 37, 25,
143};
144const short yydgoto[] =
145 { 1,
146 25, 46, 17, 18, 59, 20, 55, 27, 64, 48,
147 42, 56, 57, 61, 52, 62,
148};
149const short yysindex[] =
150 { 0,
151 -10, -4, -261, -260, 2, -259, -258, -257, -256, -254,
152 -253, -252, -251, -250, -37, 0, 15, 17, 18, 19,
153 0, 0, 0, 0, 0, 2, -93, 0, 0, 0,
154 0, 0, 0, 0, 0, 0, -239, 0, 0, 0,
155 0, -90, 0, 2, 0, -237, 2, 0, 0, 0,
156 -84, -197, 25, 0, 25, -74, 0, 25, 25, 25,
157 -94, 0, 2, 0, 0, 0, 0, 0, 0, 0,
158 0, 0, 0,};
159const short yyrindex[] =
160 { 0,
161 0, 0, 0, 0, -87, 0, 0, 0, 0, 0,
162 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
163 0, 0, 0, 0, 0, -122, 0, 0, 0, 0,
164 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
165 0, 27, 0, -183, 0, 28, -64, 0, 0, 0,
166 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
167 0, 0, -108, 0, 0, 0, 0, 0, 0, 0,
168 0, 0, 0,};
169const short yygindex[] =
170 { 0,
171 0, 0, 0, 0, 38, 0, 1, -21, -51, 0,
172 0, 0, -16, 0, 0, -18,
173};
174#define YYTABLESIZE261 261
175const short yytable[] =
176 { 16,
177 24, 21, 24, 65, 43, 22, 68, 69, 70, 23,
178 24, 26, 28, 29, 30, 31, 24, 32, 33, 34,
179 35, 36, 49, 37, 38, 51, 39, 40, 41, 44,
180 71, 45, 47, 50, 63, 24, 30, 11, 19, 67,
181 54, 73, 72, 0, 0, 0, 0, 0, 0, 0,
182 66, 0, 60, 0, 0, 0, 0, 0, 58, 3,
183 24, 60, 6, 0, 7, 8, 9, 10, 11, 12,
184 13, 14, 24, 24, 0, 0, 24, 0, 24, 24,
185 24, 24, 24, 24, 24, 24, 0, 0, 0, 0,
186 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
187 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
188 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
189 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
190 0, 0, 0, 24, 24, 0, 0, 24, 24, 24,
191 24, 24, 24, 24, 24, 24, 24, 24, 24, 0,
192 0, 24, 24, 24, 24, 24, 24, 24, 24, 24,
193 24, 58, 3, 0, 0, 6, 0, 7, 8, 9,
194 10, 11, 12, 13, 14, 6, 53, 7, 8, 9,
195 10, 11, 12, 13, 14, 6, 53, 7, 8, 9,
196 10, 11, 12, 13, 14, 24, 24, 24, 24, 24,
197 24, 24, 24, 24, 24, 0, 0, 0, 0, 0,
198 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
199 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
200 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
201 0, 0, 0, 0, 0, 2, 3, 4, 5, 6,
202 0, 7, 8, 9, 10, 11, 12, 13, 14, 0,
203 15,
204};
205const short yycheck[] =
206 { 10,
207 123, 1, 125, 55, 26, 10, 58, 59, 60, 271,
208 271, 10, 272, 272, 272, 272, 125, 272, 272, 272,
209 272, 272, 44, 61, 10, 47, 10, 10, 10, 123,
210 125, 271, 123, 271, 10, 123, 10, 10, 1, 56,
211 125, 63, 61, -1, -1, -1, -1, -1, -1, -1,
212 125, -1, 52, -1, -1, -1, -1, -1, 256, 257,
213 125, 61, 260, -1, 262, 263, 264, 265, 266, 267,
214 268, 269, 256, 257, -1, -1, 260, -1, 262, 263,
215 264, 265, 266, 267, 268, 269, -1, -1, -1, -1,
216 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
217 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
218 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
219 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
220 -1, -1, -1, 256, 257, -1, -1, 260, 261, 262,
221 263, 264, 265, 266, 267, 268, 269, 256, 257, -1,
222 -1, 260, 261, 262, 263, 264, 265, 266, 267, 268,
223 269, 256, 257, -1, -1, 260, -1, 262, 263, 264,
224 265, 266, 267, 268, 269, 260, 261, 262, 263, 264,
225 265, 266, 267, 268, 269, 260, 261, 262, 263, 264,
226 265, 266, 267, 268, 269, 260, 261, 262, 263, 264,
227 265, 266, 267, 268, 269, -1, -1, -1, -1, -1,
228 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
229 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
230 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
231 -1, -1, -1, -1, -1, 256, 257, 258, 259, 260,
232 -1, 262, 263, 264, 265, 266, 267, 268, 269, -1,
233 271,
234};
235#define YYFINAL1 1
236#ifndef YYDEBUG0
237#define YYDEBUG0 0
238#endif
239#define YYMAXTOKEN272 272
240#if YYDEBUG0
241const char * const yyname[] =
242 {
243"end-of-file",0,0,0,0,0,0,0,0,0,"'\\n'",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
2440,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,"'='",0,0,0,0,0,0,0,
2450,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
2460,0,0,0,0,0,0,0,0,0,0,0,0,0,"'{'",0,"'}'",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
2470,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
2480,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
2490,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,"INTERFACE",
250"FIBUPDATE","GROUP","METRIC","PASSIVE","ROBUSTNESS","QUERYINTERVAL",
251"QUERYRESPINTERVAL","STARTUPQUERYINTERVAL","STARTUPQUERYCNT",
252"LASTMEMBERQUERYINTERVAL","LASTMEMBERQUERYCNT","IGMPVERSION","ERROR","STRING",
253"NUMBER",
254};
255const char * const yyrule[] =
256 {"$accept : grammar",
257"grammar :",
258"grammar : grammar '\\n'",
259"grammar : grammar conf_main '\\n'",
260"grammar : grammar varset '\\n'",
261"grammar : grammar interface '\\n'",
262"grammar : grammar group '\\n'",
263"grammar : grammar error '\\n'",
264"string : string STRING",
265"string : STRING",
266"yesno : STRING",
267"varset : STRING '=' string",
268"conf_main : FIBUPDATE yesno",
269"conf_main : defaults",
270"defaults : LASTMEMBERQUERYCNT NUMBER",
271"defaults : LASTMEMBERQUERYINTERVAL NUMBER",
272"defaults : METRIC NUMBER",
273"defaults : QUERYINTERVAL NUMBER",
274"defaults : QUERYRESPINTERVAL NUMBER",
275"defaults : ROBUSTNESS NUMBER",
276"defaults : STARTUPQUERYCNT NUMBER",
277"defaults : STARTUPQUERYINTERVAL NUMBER",
278"defaults : IGMPVERSION NUMBER",
279"optnl : '\\n' optnl",
280"optnl :",
281"nl : '\\n' optnl",
282"$$1 :",
283"interface : INTERFACE STRING $$1 interface_block",
284"interface_block : '{' optnl interfaceopts_l '}'",
285"interface_block : '{' optnl '}'",
286"interface_block :",
287"interfaceopts_l : interfaceopts_l interfaceoptsl",
288"interfaceopts_l : interfaceoptsl",
289"interfaceoptsl : PASSIVE nl",
290"interfaceoptsl : defaults nl",
291"$$2 :",
292"group : GROUP optnl '{' optnl $$2 groupopts_l '}'",
293"groupopts_l : groupopts_l groupoptsl",
294"groupopts_l : groupoptsl",
295"groupoptsl : interface nl",
296"groupoptsl : defaults nl",
297"groupoptsl : error nl",
298};
299#endif
300#ifdef YYSTACKSIZE10000
301#undef YYMAXDEPTH10000
302#define YYMAXDEPTH10000 YYSTACKSIZE10000
303#else
304#ifdef YYMAXDEPTH10000
305#define YYSTACKSIZE10000 YYMAXDEPTH10000
306#else
307#define YYSTACKSIZE10000 10000
308#define YYMAXDEPTH10000 10000
309#endif
310#endif
311#define YYINITSTACKSIZE200 200
312/* LINTUSED */
313int yydebug;
314int yynerrs;
315int yyerrflag;
316int yychar;
317short *yyssp;
318YYSTYPE *yyvsp;
319YYSTYPE yyval;
320YYSTYPE yylval;
321short *yyss;
322short *yysslim;
323YYSTYPE *yyvs;
324unsigned int yystacksize;
325int yyparse(void);
326#line 364 "/usr/src/usr.sbin/dvmrpd/parse.y"
327
328struct keywords {
329 const char *k_name;
330 int k_val;
331};
332
333int
334yyerror(const char *fmt, ...)
335{
336 va_list ap;
337 char *msg;
338
339 file->errors++;
340 va_start(ap, fmt)__builtin_va_start(ap, fmt);
341 if (vasprintf(&msg, fmt, ap) == -1)
342 fatalx("yyerror vasprintf");
343 va_end(ap)__builtin_va_end(ap);
344 logit(LOG_CRIT2, "%s:%d: %s", file->name, yylval.lineno, msg);
345 free(msg);
346 return (0);
347}
348
349int
350kw_cmp(const void *k, const void *e)
351{
352 return (strcmp(k, ((const struct keywords *)e)->k_name));
353}
354
355int
356lookup(char *s)
357{
358 /* this has to be sorted always */
359 static const struct keywords keywords[] = {
360 {"fib-update", FIBUPDATE258},
361 {"group", GROUP259},
362 {"igmp-version", IGMPVERSION269},
363 {"interface", INTERFACE257},
364 {"last-member-query-count", LASTMEMBERQUERYCNT268},
365 {"last-member-query-interval", LASTMEMBERQUERYINTERVAL267},
366 {"metric", METRIC260},
367 {"passive", PASSIVE261},
368 {"query-interval", QUERYINTERVAL263},
369 {"query-response-interval", QUERYRESPINTERVAL264},
370 {"robustness", ROBUSTNESS262},
371 {"startup-query-count", STARTUPQUERYCNT266},
372 {"startup-query-interval", STARTUPQUERYINTERVAL265}
373 };
374 const struct keywords *p;
375
376 p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]),
377 sizeof(keywords[0]), kw_cmp);
378
379 if (p)
380 return (p->k_val);
381 else
382 return (STRING271);
383}
384
385#define MAXPUSHBACK128 128
386
387char *parsebuf;
388int parseindex;
389char pushback_buffer[MAXPUSHBACK128];
390int pushback_index = 0;
391
392int
393lgetc(int quotec)
394{
395 int c, next;
396
397 if (parsebuf) {
398 /* Read character from the parsebuffer instead of input. */
399 if (parseindex >= 0) {
400 c = (unsigned char)parsebuf[parseindex++];
401 if (c != '\0')
402 return (c);
403 parsebuf = NULL((void *)0);
404 } else
405 parseindex++;
406 }
407
408 if (pushback_index)
409 return ((unsigned char)pushback_buffer[--pushback_index]);
410
411 if (quotec) {
412 if ((c = getc(file->stream)(!__isthreaded ? (--(file->stream)->_r < 0 ? __srget
(file->stream) : (int)(*(file->stream)->_p++)) : (getc
)(file->stream))) == EOF(-1)) {
413 yyerror("reached end of file while parsing "
414 "quoted string");
415 if (file == topfile || popfile() == EOF(-1))
416 return (EOF(-1));
417 return (quotec);
418 }
419 return (c);
420 }
421
422 while ((c = getc(file->stream)(!__isthreaded ? (--(file->stream)->_r < 0 ? __srget
(file->stream) : (int)(*(file->stream)->_p++)) : (getc
)(file->stream))) == '\\') {
423 next = getc(file->stream)(!__isthreaded ? (--(file->stream)->_r < 0 ? __srget
(file->stream) : (int)(*(file->stream)->_p++)) : (getc
)(file->stream));
424 if (next != '\n') {
425 c = next;
426 break;
427 }
428 yylval.lineno = file->lineno;
429 file->lineno++;
430 }
431
432 while (c == EOF(-1)) {
433 if (file == topfile || popfile() == EOF(-1))
434 return (EOF(-1));
435 c = getc(file->stream)(!__isthreaded ? (--(file->stream)->_r < 0 ? __srget
(file->stream) : (int)(*(file->stream)->_p++)) : (getc
)(file->stream));
436 }
437 return (c);
438}
439
440int
441lungetc(int c)
442{
443 if (c == EOF(-1))
444 return (EOF(-1));
445 if (parsebuf) {
446 parseindex--;
447 if (parseindex >= 0)
448 return (c);
449 }
450 if (pushback_index + 1 >= MAXPUSHBACK128)
451 return (EOF(-1));
452 pushback_buffer[pushback_index++] = c;
453 return (c);
454}
455
456int
457findeol(void)
458{
459 int c;
460
461 parsebuf = NULL((void *)0);
462
463 /* skip to either EOF or the first real EOL */
464 while (1) {
465 if (pushback_index)
466 c = (unsigned char)pushback_buffer[--pushback_index];
467 else
468 c = lgetc(0);
469 if (c == '\n') {
470 file->lineno++;
471 break;
472 }
473 if (c == EOF(-1))
474 break;
475 }
476 return (ERROR270);
477}
478
479int
480yylex(void)
481{
482 char buf[8096];
483 char *p, *val;
484 int quotec, next, c;
485 int token;
486
487top:
488 p = buf;
489 while ((c = lgetc(0)) == ' ' || c == '\t')
490 ; /* nothing */
491
492 yylval.lineno = file->lineno;
493 if (c == '#')
494 while ((c = lgetc(0)) != '\n' && c != EOF(-1))
495 ; /* nothing */
496 if (c == '$' && parsebuf == NULL((void *)0)) {
497 while (1) {
498 if ((c = lgetc(0)) == EOF(-1))
499 return (0);
500
501 if (p + 1 >= buf + sizeof(buf) - 1) {
502 yyerror("string too long");
503 return (findeol());
504 }
505 if (isalnum(c) || c == '_') {
506 *p++ = c;
507 continue;
508 }
509 *p = '\0';
510 lungetc(c);
511 break;
512 }
513 val = symget(buf);
514 if (val == NULL((void *)0)) {
515 yyerror("macro '%s' not defined", buf);
516 return (findeol());
517 }
518 parsebuf = val;
519 parseindex = 0;
520 goto top;
521 }
522
523 switch (c) {
524 case '\'':
525 case '"':
526 quotec = c;
527 while (1) {
528 if ((c = lgetc(quotec)) == EOF(-1))
529 return (0);
530 if (c == '\n') {
531 file->lineno++;
532 continue;
533 } else if (c == '\\') {
534 if ((next = lgetc(quotec)) == EOF(-1))
535 return (0);
536 if (next == quotec || next == ' ' ||
537 next == '\t')
538 c = next;
539 else if (next == '\n') {
540 file->lineno++;
541 continue;
542 } else
543 lungetc(next);
544 } else if (c == quotec) {
545 *p = '\0';
546 break;
547 } else if (c == '\0') {
548 yyerror("syntax error");
549 return (findeol());
550 }
551 if (p + 1 >= buf + sizeof(buf) - 1) {
552 yyerror("string too long");
553 return (findeol());
554 }
555 *p++ = c;
556 }
557 yylval.v.string = strdup(buf);
558 if (yylval.v.string == NULL((void *)0))
559 err(1, "%s", __func__);
560 return (STRING271);
561 }
562
563#define allowed_to_end_number(x)(isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' ||
x == '=') \
564 (isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=')
565
566 if (c == '-' || isdigit(c)) {
567 do {
568 *p++ = c;
569 if ((size_t)(p-buf) >= sizeof(buf)) {
570 yyerror("string too long");
571 return (findeol());
572 }
573 } while ((c = lgetc(0)) != EOF(-1) && isdigit(c));
574 lungetc(c);
575 if (p == buf + 1 && buf[0] == '-')
576 goto nodigits;
577 if (c == EOF(-1) || allowed_to_end_number(c)(isspace(c) || c == ')' || c ==',' || c == '/' || c == '}' ||
c == '=')) {
578 const char *errstr = NULL((void *)0);
579
580 *p = '\0';
581 yylval.v.number = strtonum(buf, LLONG_MIN(-9223372036854775807LL -1LL),
582 LLONG_MAX9223372036854775807LL, &errstr);
583 if (errstr) {
584 yyerror("\"%s\" invalid number: %s",
585 buf, errstr);
586 return (findeol());
587 }
588 return (NUMBER272);
589 } else {
590nodigits:
591 while (p > buf + 1)
592 lungetc((unsigned char)*--p);
593 c = (unsigned char)*--p;
594 if (c == '-')
595 return (c);
596 }
597 }
598
599#define allowed_in_string(x)(isalnum(x) || (ispunct(x) && x != '(' && x !=
')' && x != '{' && x != '}' && x != '!'
&& x != '=' && x != '#' && x != ',')
) \
600 (isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \
601 x != '{' && x != '}' && \
602 x != '!' && x != '=' && x != '#' && \
603 x != ','))
604
605 if (isalnum(c) || c == ':' || c == '_') {
606 do {
607 *p++ = c;
608 if ((size_t)(p-buf) >= sizeof(buf)) {
609 yyerror("string too long");
610 return (findeol());
611 }
612 } while ((c = lgetc(0)) != EOF(-1) && (allowed_in_string(c)(isalnum(c) || (ispunct(c) && c != '(' && c !=
')' && c != '{' && c != '}' && c != '!'
&& c != '=' && c != '#' && c != ',')
)));
613 lungetc(c);
614 *p = '\0';
615 if ((token = lookup(buf)) == STRING271)
616 if ((yylval.v.string = strdup(buf)) == NULL((void *)0))
617 err(1, "%s", __func__);
618 return (token);
619 }
620 if (c == '\n') {
621 yylval.lineno = file->lineno;
622 file->lineno++;
623 }
624 if (c == EOF(-1))
625 return (0);
626 return (c);
627}
628
629int
630check_file_secrecy(int fd, const char *fname)
631{
632 struct stat st;
633
634 if (fstat(fd, &st)) {
635 log_warn("cannot stat %s", fname);
636 return (-1);
637 }
638 if (st.st_uid != 0 && st.st_uid != getuid()) {
639 log_warnx("%s: owner not root or current user", fname);
640 return (-1);
641 }
642 if (st.st_mode & (S_IWGRP0000020 | S_IXGRP0000010 | S_IRWXO0000007)) {
643 log_warnx("%s: group writable or world read/writable", fname);
644 return (-1);
645 }
646 return (0);
647}
648
649struct file *
650pushfile(const char *name, int secret)
651{
652 struct file *nfile;
653
654 if ((nfile = calloc(1, sizeof(struct file))) == NULL((void *)0)) {
655 log_warn("%s", __func__);
656 return (NULL((void *)0));
657 }
658 if ((nfile->name = strdup(name)) == NULL((void *)0)) {
659 log_warn("%s", __func__);
660 free(nfile);
661 return (NULL((void *)0));
662 }
663 if ((nfile->stream = fopen(nfile->name, "r")) == NULL((void *)0)) {
664 log_warn("%s: %s", __func__, nfile->name);
665 free(nfile->name);
666 free(nfile);
667 return (NULL((void *)0));
668 } else if (secret &&
669 check_file_secrecy(fileno(nfile->stream)(!__isthreaded ? ((nfile->stream)->_file) : (fileno)(nfile
->stream)), nfile->name)) {
670 fclose(nfile->stream);
671 free(nfile->name);
672 free(nfile);
673 return (NULL((void *)0));
674 }
675 nfile->lineno = 1;
676 TAILQ_INSERT_TAIL(&files, nfile, entry)do { (nfile)->entry.tqe_next = ((void *)0); (nfile)->entry
.tqe_prev = (&files)->tqh_last; *(&files)->tqh_last
= (nfile); (&files)->tqh_last = &(nfile)->entry
.tqe_next; } while (0);
677 return (nfile);
678}
679
680int
681popfile(void)
682{
683 struct file *prev;
684
685 if ((prev = TAILQ_PREV(file, files, entry)(*(((struct files *)((file)->entry.tqe_prev))->tqh_last
))) != NULL((void *)0))
686 prev->errors += file->errors;
687
688 TAILQ_REMOVE(&files, file, entry)do { if (((file)->entry.tqe_next) != ((void *)0)) (file)->
entry.tqe_next->entry.tqe_prev = (file)->entry.tqe_prev
; else (&files)->tqh_last = (file)->entry.tqe_prev;
*(file)->entry.tqe_prev = (file)->entry.tqe_next; ; ; }
while (0);
689 fclose(file->stream);
690 free(file->name);
691 free(file);
692 file = prev;
693 return (file ? 0 : EOF(-1));
694}
695
696struct dvmrpd_conf *
697parse_config(char *filename, int opts)
698{
699 int errors = 0;
700 struct sym *sym, *next;
701 struct timeval now;
702
703 if ((conf = calloc(1, sizeof(struct dvmrpd_conf))) == NULL((void *)0)) {
704 errx(1, "parse_config calloc");
705 return (NULL((void *)0));
706 }
707
708 defs = &globaldefs;
709 defs->probe_interval = DEFAULT_PROBE_INTERVAL10;
710 defs->last_member_query_cnt = DEFAULT_LAST_MEMBER_QUERY_CNT2;
711 defs->last_member_query_interval = DEFAULT_LAST_MEMBER_QUERY_INTERVAL10;
712 defs->metric = DEFAULT_METRIC1;
713 defs->query_interval = DEFAULT_QUERY_INTERVAL125;
714 defs->query_resp_interval = DEFAULT_QUERY_RESP_INTERVAL100;
715 defs->robustness = DEFAULT_ROBUSTNESS2;
716 defs->startup_query_cnt = DEFAULT_STARTUP_QUERY_CNT2;
717 defs->startup_query_interval = DEFAULT_STARTUP_QUERY_INTERVAL125 / 4;
718 defs->igmp_version = DEFAULT_IGMP_VERSION2;
719 defs->dead_interval = NBR_TMOUT35;
720
721 if ((file = pushfile(filename, 1)) == NULL((void *)0)) {
722 free(conf);
723 return (NULL((void *)0));
724 }
725 topfile = file;
726
727 gettimeofday(&now, NULL((void *)0));
728 conf->gen_id = (u_int32_t)now.tv_sec; /* for a while after 2038 */
729 conf->opts = opts;
730
731 yyparse();
732 errors = file->errors;
733 popfile();
734
735 /* Free macros and check which have not been used. */
736 TAILQ_FOREACH_SAFE(sym, &symhead, entry, next)for ((sym) = ((&symhead)->tqh_first); (sym) != ((void *
)0) && ((next) = ((sym)->entry.tqe_next), 1); (sym
) = (next)) {
737 if ((conf->opts & DVMRPD_OPT_VERBOSE20x00000002) && !sym->used)
738 fprintf(stderr(&__sF[2]), "warning: macro '%s' not "
739 "used\n", sym->nam);
740 if (!sym->persist) {
741 free(sym->nam);
742 free(sym->val);
743 TAILQ_REMOVE(&symhead, sym, entry)do { if (((sym)->entry.tqe_next) != ((void *)0)) (sym)->
entry.tqe_next->entry.tqe_prev = (sym)->entry.tqe_prev;
else (&symhead)->tqh_last = (sym)->entry.tqe_prev;
*(sym)->entry.tqe_prev = (sym)->entry.tqe_next; ; ; } while
(0);
744 free(sym);
745 }
746 }
747
748 if (errors) {
749 clear_config(conf);
750 return (NULL((void *)0));
751 }
752
753 return (conf);
754}
755
756int
757symset(const char *nam, const char *val, int persist)
758{
759 struct sym *sym;
760
761 TAILQ_FOREACH(sym, &symhead, entry)for((sym) = ((&symhead)->tqh_first); (sym) != ((void *
)0); (sym) = ((sym)->entry.tqe_next)) {
762 if (strcmp(nam, sym->nam) == 0)
763 break;
764 }
765
766 if (sym != NULL((void *)0)) {
767 if (sym->persist == 1)
768 return (0);
769 else {
770 free(sym->nam);
771 free(sym->val);
772 TAILQ_REMOVE(&symhead, sym, entry)do { if (((sym)->entry.tqe_next) != ((void *)0)) (sym)->
entry.tqe_next->entry.tqe_prev = (sym)->entry.tqe_prev;
else (&symhead)->tqh_last = (sym)->entry.tqe_prev;
*(sym)->entry.tqe_prev = (sym)->entry.tqe_next; ; ; } while
(0);
773 free(sym);
774 }
775 }
776 if ((sym = calloc(1, sizeof(*sym))) == NULL((void *)0))
777 return (-1);
778
779 sym->nam = strdup(nam);
780 if (sym->nam == NULL((void *)0)) {
781 free(sym);
782 return (-1);
783 }
784 sym->val = strdup(val);
785 if (sym->val == NULL((void *)0)) {
786 free(sym->nam);
787 free(sym);
788 return (-1);
789 }
790 sym->used = 0;
791 sym->persist = persist;
792 TAILQ_INSERT_TAIL(&symhead, sym, entry)do { (sym)->entry.tqe_next = ((void *)0); (sym)->entry.
tqe_prev = (&symhead)->tqh_last; *(&symhead)->tqh_last
= (sym); (&symhead)->tqh_last = &(sym)->entry.
tqe_next; } while (0);
793 return (0);
794}
795
796int
797cmdline_symset(char *s)
798{
799 char *sym, *val;
800 int ret;
801
802 if ((val = strrchr(s, '=')) == NULL((void *)0))
803 return (-1);
804 sym = strndup(s, val - s);
805 if (sym == NULL((void *)0))
806 errx(1, "%s: strndup", __func__);
807 ret = symset(sym, val + 1, 1);
808 free(sym);
809
810 return (ret);
811}
812
813char *
814symget(const char *nam)
815{
816 struct sym *sym;
817
818 TAILQ_FOREACH(sym, &symhead, entry)for((sym) = ((&symhead)->tqh_first); (sym) != ((void *
)0); (sym) = ((sym)->entry.tqe_next)) {
819 if (strcmp(nam, sym->nam) == 0) {
820 sym->used = 1;
821 return (sym->val);
822 }
823 }
824 return (NULL((void *)0));
825}
826
827struct iface *
828conf_get_if(struct kif *kif)
829{
830 struct iface *i;
831
832 if (kif->ifindex >= MAXVIFS32) {
833 yyerror("interface %s index too large", kif->ifname);
834 return (NULL((void *)0));
835 }
836
837 LIST_FOREACH(i, &conf->iface_list, entry)for((i) = ((&conf->iface_list)->lh_first); (i)!= ((
void *)0); (i) = ((i)->entry.le_next))
838 if (i->ifindex == kif->ifindex) {
839 yyerror("interface %s already configured",
840 kif->ifname);
841 return (NULL((void *)0));
842 }
843
844 i = if_new(kif);
845 i->passive = 0;
846 i->recv_query_resp_interval = DEFAULT_QUERY_RESP_INTERVAL100;
847
848 return (i);
849}
850
851void
852clear_config(struct dvmrpd_conf *xconf)
853{
854 /* XXX clear conf */
855 /* ... */
856}
857#line 850 "parse.c"
858/* allocate initial stack or double stack size, up to YYMAXDEPTH */
859static int yygrowstack(void)
860{
861 unsigned int newsize;
862 long sslen;
863 short *newss;
864 YYSTYPE *newvs;
865
866 if ((newsize = yystacksize) == 0)
22
←
Assuming the condition is false
→
23
←
Taking false branch
→
867 newsize = YYINITSTACKSIZE200;
868 else if (newsize >= YYMAXDEPTH10000)
24
←
Assuming 'newsize' is < YYMAXDEPTH
→
25
←
Taking false branch
→
869 return -1;
870 else if ((newsize *= 2) > YYMAXDEPTH10000)
26
←
Assuming the condition is false
→
27
←
Taking false branch
→
871 newsize = YYMAXDEPTH10000;
872 sslen = yyssp - yyss;
873#ifdef SIZE_MAX0xffffffffffffffffUL
874#define YY_SIZE_MAX0xffffffffffffffffUL SIZE_MAX0xffffffffffffffffUL
875#else
876#define YY_SIZE_MAX0xffffffffffffffffUL 0xffffffffU
877#endif
878 if (newsize && YY_SIZE_MAX0xffffffffffffffffUL / newsize < sizeof *newss)
28
←
Assuming 'newsize' is 0
→
879 goto bail;
880 newss = (short *)realloc(yyss, newsize * sizeof *newss);
881 if (newss == NULL((void *)0))
29
←
Assuming 'newss' is not equal to NULL
→
30
←
Taking false branch
→
882 goto bail;
883 yyss = newss;
884 yyssp = newss + sslen;
885 if (newsize
30.1
'newsize' is 0
 && YY_SIZE_MAX0xffffffffffffffffUL / newsize < sizeof *newvs)
886 goto bail;
887 newvs = (YYSTYPE *)realloc(yyvs, newsize * sizeof *newvs);
888 if (newvs == NULL((void *)0))
31
←
Assuming 'newvs' is not equal to NULL
→
32
←
Taking false branch
→
889 goto bail;
890 yyvs = newvs;
891 yyvsp = newvs + sslen;
892 yystacksize = newsize;
893 yysslim = yyss + newsize - 1;
894 return 0;
895bail:
896 if (yyss)
897 free(yyss);
898 if (yyvs)
899 free(yyvs);
900 yyss = yyssp = NULL((void *)0);
901 yyvs = yyvsp = NULL((void *)0);
902 yystacksize = 0;
903 return -1;
904}
905
906#define YYABORTgoto yyabort goto yyabort
907#define YYREJECTgoto yyabort goto yyabort
908#define YYACCEPTgoto yyaccept goto yyaccept
909#define YYERRORgoto yyerrlab goto yyerrlab
910int
911yyparse(void)
912{
913 int yym, yyn, yystate;
914#if YYDEBUG0
915 const char *yys;
916
917 if ((yys = getenv("YYDEBUG")))
918 {
919 yyn = *yys;
920 if (yyn >= '0' && yyn <= '9')
921 yydebug = yyn - '0';
922 }
923#endif /* YYDEBUG */
924
925 yynerrs = 0;
926 yyerrflag = 0;
927 yychar = (-1);
928
929 if (yyss == NULL((void *)0) && yygrowstack()) goto yyoverflow;
1
Assuming 'yyss' is not equal to NULL
→
930 yyssp = yyss;
931 yyvsp = yyvs;
932 *yyssp = yystate = 0;
933
934yyloop:
935 if ((yyn = yydefred[yystate]) != 0) goto yyreduce;
2
←
Taking true branch
→
3
←
Control jumps to line 1042
→
13
←
Taking false branch
→
936 if (yychar
13.1
'yychar' is >= 0
 < 0)
14
←
Taking false branch
→
937 {
938 if ((yychar = yylex()) < 0) yychar = 0;
939#if YYDEBUG0
940 if (yydebug)
941 {
942 yys = 0;
943 if (yychar <= YYMAXTOKEN272) yys = yyname[yychar];
944 if (!yys) yys = "illegal-symbol";
945 printf("%sdebug: state %d, reading %d (%s)\n",
946 YYPREFIX"yy", yystate, yychar, yys);
947 }
948#endif
949 }
950 if ((yyn = yysindex[yystate]) && (yyn += yychar) >= 0 &&
15
←
Assuming 'yyn' is not equal to 0
→
16
←
Assuming the condition is true
→
19
←
Taking true branch
→
951 yyn <= YYTABLESIZE261 && yycheck[yyn] == yychar)
17
←
Assuming 'yyn' is <= YYTABLESIZE
→
18
←
Assuming the condition is true
→
952 {
953#if YYDEBUG0
954 if (yydebug)
955 printf("%sdebug: state %d, shifting to state %d\n",
956 YYPREFIX"yy", yystate, yytable[yyn]);
957#endif
958 if (yyssp >= yysslim && yygrowstack())
20
←
Assuming 'yyssp' is >= 'yysslim'
→
21
←
Calling 'yygrowstack'
→
33
←
Returning from 'yygrowstack'
→
34
←
Taking false branch
→
959 {
960 goto yyoverflow;
961 }
962 *++yyssp = yystate = yytable[yyn];
35
←
Use of zero-allocated memory
963 *++yyvsp = yylval;
964 yychar = (-1);
965 if (yyerrflag > 0) --yyerrflag;
966 goto yyloop;
967 }
968 if ((yyn = yyrindex[yystate]) && (yyn += yychar) >= 0 &&
969 yyn <= YYTABLESIZE261 && yycheck[yyn] == yychar)
970 {
971 yyn = yytable[yyn];
972 goto yyreduce;
973 }
974 if (yyerrflag) goto yyinrecovery;
975#if defined(__GNUC__4)
976 goto yynewerror;
977#endif
978yynewerror:
979 yyerror("syntax error");
980#if defined(__GNUC__4)
981 goto yyerrlab;
982#endif
983yyerrlab:
984 ++yynerrs;
985yyinrecovery:
986 if (yyerrflag < 3)
987 {
988 yyerrflag = 3;
989 for (;;)
990 {
991 if ((yyn = yysindex[*yyssp]) && (yyn += YYERRCODE256) >= 0 &&
992 yyn <= YYTABLESIZE261 && yycheck[yyn] == YYERRCODE256)
993 {
994#if YYDEBUG0
995 if (yydebug)
996 printf("%sdebug: state %d, error recovery shifting\
997 to state %d\n", YYPREFIX"yy", *yyssp, yytable[yyn]);
998#endif
999 if (yyssp >= yysslim && yygrowstack())
1000 {
1001 goto yyoverflow;
1002 }
1003 *++yyssp = yystate = yytable[yyn];
1004 *++yyvsp = yylval;
1005 goto yyloop;
1006 }
1007 else
1008 {
1009#if YYDEBUG0
1010 if (yydebug)
1011 printf("%sdebug: error recovery discarding state %d\n",
1012 YYPREFIX"yy", *yyssp);
1013#endif
1014 if (yyssp <= yyss) goto yyabort;
1015 --yyssp;
1016 --yyvsp;
1017 }
1018 }
1019 }
1020 else
1021 {
1022 if (yychar == 0) goto yyabort;
1023#if YYDEBUG0
1024 if (yydebug)
1025 {
1026 yys = 0;
1027 if (yychar <= YYMAXTOKEN272) yys = yyname[yychar];
1028 if (!yys) yys = "illegal-symbol";
1029 printf("%sdebug: state %d, error recovery discards token %d (%s)\n",
1030 YYPREFIX"yy", yystate, yychar, yys);
1031 }
1032#endif
1033 yychar = (-1);
1034 goto yyloop;
1035 }
1036yyreduce:
1037#if YYDEBUG0
1038 if (yydebug)
1039 printf("%sdebug: state %d, reducing by rule %d (%s)\n",
1040 YYPREFIX"yy", yystate, yyn, yyrule[yyn]);
1041#endif
1042 yym = yylen[yyn];
1043 if (yym
3.1
'yym' is 0
)
4
←
Taking false branch
→
1044 yyval = yyvsp[1-yym];
1045 else
1046 memset(&yyval, 0, sizeof yyval);
1047 switch (yyn)
5
←
'Default' branch taken. Execution continues on line 1292
→
1048 {
1049case 7:
1050#line 134 "/usr/src/usr.sbin/dvmrpd/parse.y"
1051{ file->errors++; }
1052break;
1053case 8:
1054#line 137 "/usr/src/usr.sbin/dvmrpd/parse.y"
1055{
1056 if (asprintf(&yyval.v.string, "%s %s", yyvsp[-1].v.string, yyvsp[0].v.string) == -1) {
1057 free(yyvsp[-1].v.string);
1058 free(yyvsp[0].v.string);
1059 yyerror("string: asprintf");
1060 YYERRORgoto yyerrlab;
1061 }
1062 free(yyvsp[-1].v.string);
1063 free(yyvsp[0].v.string);
1064 }
1065break;
1066case 10:
1067#line 150 "/usr/src/usr.sbin/dvmrpd/parse.y"
1068{
1069 if (!strcmp(yyvsp[0].v.string, "yes"))
1070 yyval.v.number = 1;
1071 else if (!strcmp(yyvsp[0].v.string, "no"))
1072 yyval.v.number = 0;
1073 else {
1074 yyerror("syntax error, "
1075 "either yes or no expected");
1076 free(yyvsp[0].v.string);
1077 YYERRORgoto yyerrlab;
1078 }
1079 free(yyvsp[0].v.string);
1080 }
1081break;
1082case 11:
1083#line 165 "/usr/src/usr.sbin/dvmrpd/parse.y"
1084{
1085 char *s = yyvsp[-2].v.string;
1086 if (conf->opts & DVMRPD_OPT_VERBOSE0x00000001)
1087 printf("%s = \"%s\"\n", yyvsp[-2].v.string, yyvsp[0].v.string);
1088 while (*s++) {
1089 if (isspace((unsigned char)*s)) {
1090 yyerror("macro name cannot contain "
1091 "whitespace");
1092 free(yyvsp[-2].v.string);
1093 free(yyvsp[0].v.string);
1094 YYERRORgoto yyerrlab;
1095 }
1096 }
1097 if (symset(yyvsp[-2].v.string, yyvsp[0].v.string, 0) == -1)
1098 fatal("cannot store variable");
1099 free(yyvsp[-2].v.string);
1100 free(yyvsp[0].v.string);
1101 }
1102break;
1103case 12:
1104#line 185 "/usr/src/usr.sbin/dvmrpd/parse.y"
1105{
1106 if (yyvsp[0].v.number == 0)
1107 conf->flags |= DVMRPD_FLAG_NO_FIB_UPDATE0x0001;
1108 else
1109 conf->flags &= ~DVMRPD_FLAG_NO_FIB_UPDATE0x0001;
1110 }
1111break;
1112case 14:
1113#line 194 "/usr/src/usr.sbin/dvmrpd/parse.y"
1114{
1115 if (yyvsp[0].v.number < MIN_LAST_MEMBER_QUERY_CNT1 ||
1116 yyvsp[0].v.number > MAX_LAST_MEMBER_QUERY_CNT255) {
1117 yyerror("last-member-query-count out of "
1118 "range (%d-%d)",
1119 MIN_LAST_MEMBER_QUERY_CNT1,
1120 MAX_LAST_MEMBER_QUERY_CNT255);
1121 YYERRORgoto yyerrlab;
1122 }
1123 defs->last_member_query_cnt = yyvsp[0].v.number;
1124 }
1125break;
1126case 15:
1127#line 205 "/usr/src/usr.sbin/dvmrpd/parse.y"
1128{
1129 if (yyvsp[0].v.number < MIN_LAST_MEMBER_QUERY_INTERVAL1 ||
1130 yyvsp[0].v.number > MAX_LAST_MEMBER_QUERY_INTERVAL65535) {
1131 yyerror("last-member-query-interval out of "
1132 "range (%d-%d)",
1133 MIN_LAST_MEMBER_QUERY_INTERVAL1,
1134 MAX_LAST_MEMBER_QUERY_INTERVAL65535);
1135 YYERRORgoto yyerrlab;
1136 }
1137 defs->last_member_query_interval = yyvsp[0].v.number;
1138 }
1139break;
1140case 16:
1141#line 216 "/usr/src/usr.sbin/dvmrpd/parse.y"
1142{
1143 if (yyvsp[0].v.number < MIN_METRIC1 || yyvsp[0].v.number > MAX_METRIC31) {
1144 yyerror("metric out of range (%d-%d)",
1145 MIN_METRIC1, MAX_METRIC31);
1146 YYERRORgoto yyerrlab;
1147 }
1148 defs->metric = yyvsp[0].v.number;
1149 }
1150break;
1151case 17:
1152#line 224 "/usr/src/usr.sbin/dvmrpd/parse.y"
1153{
1154 if (yyvsp[0].v.number < MIN_QUERY_INTERVAL1 ||
1155 yyvsp[0].v.number > MAX_QUERY_INTERVAL65535) {
1156 yyerror("query-interval out of range (%d-%d)",
1157 MIN_QUERY_INTERVAL1, MAX_QUERY_INTERVAL65535);
1158 YYERRORgoto yyerrlab;
1159 }
1160 defs->query_interval = yyvsp[0].v.number;
1161 }
1162break;
1163case 18:
1164#line 233 "/usr/src/usr.sbin/dvmrpd/parse.y"
1165{
1166 if (yyvsp[0].v.number < MIN_QUERY_RESP_INTERVAL1 ||
1167 yyvsp[0].v.number > MAX_QUERY_RESP_INTERVAL65535) {
1168 yyerror("query-response-interval out of "
1169 "range (%d-%d)",
1170 MIN_QUERY_RESP_INTERVAL1,
1171 MAX_QUERY_RESP_INTERVAL65535);
1172 YYERRORgoto yyerrlab;
1173 }
1174 defs->query_resp_interval = yyvsp[0].v.number;
1175 }
1176break;
1177case 19:
1178#line 244 "/usr/src/usr.sbin/dvmrpd/parse.y"
1179{
1180 if (yyvsp[0].v.number < MIN_ROBUSTNESS1 || yyvsp[0].v.number > MAX_ROBUSTNESS4) {
1181 yyerror("robustness out of range (%d-%d)",
1182 MIN_ROBUSTNESS1, MAX_ROBUSTNESS4);
1183 YYERRORgoto yyerrlab;
1184 }
1185 defs->robustness = yyvsp[0].v.number;
1186 }
1187break;
1188case 20:
1189#line 252 "/usr/src/usr.sbin/dvmrpd/parse.y"
1190{
1191 if (yyvsp[0].v.number < MIN_STARTUP_QUERY_CNT1 ||
1192 yyvsp[0].v.number > MAX_STARTUP_QUERY_CNT4) {
1193 yyerror("startup-query-count out of "
1194 "range (%d-%d)",
1195 MIN_STARTUP_QUERY_CNT1,
1196 MAX_STARTUP_QUERY_CNT4);
1197 YYERRORgoto yyerrlab;
1198 }
1199 defs->startup_query_cnt = yyvsp[0].v.number;
1200 }
1201break;
1202case 21:
1203#line 263 "/usr/src/usr.sbin/dvmrpd/parse.y"
1204{
1205 if (yyvsp[0].v.number < MIN_STARTUP_QUERY_INTERVAL1 ||
1206 yyvsp[0].v.number > MAX_STARTUP_QUERY_INTERVAL65535) {
1207 yyerror("startup-query-interval out of "
1208 "range (%d-%d)",
1209 MIN_STARTUP_QUERY_INTERVAL1,
1210 MAX_STARTUP_QUERY_INTERVAL65535);
1211 YYERRORgoto yyerrlab;
1212 }
1213 defs->startup_query_interval = yyvsp[0].v.number;
1214 }
1215break;
1216case 22:
1217#line 274 "/usr/src/usr.sbin/dvmrpd/parse.y"
1218{
1219 if (yyvsp[0].v.number < MIN_IGMP_VERSION1 ||
1220 yyvsp[0].v.number > MAX_IGMP_VERSION2) {
1221 yyerror("igmp-version out of range (%d-%d)",
1222 MIN_IGMP_VERSION1, MAX_IGMP_VERSION2);
1223 YYERRORgoto yyerrlab;
1224 }
1225 defs->igmp_version = yyvsp[0].v.number;
1226 }
1227break;
1228case 26:
1229#line 292 "/usr/src/usr.sbin/dvmrpd/parse.y"
1230{
1231 struct kif *kif;
1232
1233 if ((kif = kif_findname(yyvsp[0].v.string)) == NULL((void *)0)) {
1234 yyerror("unknown interface %s", yyvsp[0].v.string);
1235 free(yyvsp[0].v.string);
1236 YYERRORgoto yyerrlab;
1237 }
1238 free(yyvsp[0].v.string);
1239 iface = conf_get_if(kif);
1240 if (iface == NULL((void *)0))
1241 YYERRORgoto yyerrlab;
1242 LIST_INSERT_HEAD(&conf->iface_list, iface, entry)do { if (((iface)->entry.le_next = (&conf->iface_list
)->lh_first) != ((void *)0)) (&conf->iface_list)->
lh_first->entry.le_prev = &(iface)->entry.le_next; (
&conf->iface_list)->lh_first = (iface); (iface)->
entry.le_prev = &(&conf->iface_list)->lh_first;
} while (0);
1243
1244 memcpy(&ifacedefs, defs, sizeof(ifacedefs));
1245 defs = &ifacedefs;
1246 }
1247break;
1248case 27:
1249#line 308 "/usr/src/usr.sbin/dvmrpd/parse.y"
1250{
1251 iface->probe_interval = defs->probe_interval;
1252 iface->query_interval = defs->query_interval;
1253 iface->query_resp_interval = defs->query_resp_interval;
1254 iface->startup_query_interval =
1255 defs->startup_query_interval;
1256 iface->startup_query_cnt = defs->startup_query_cnt;
1257 iface->last_member_query_interval =
1258 defs->last_member_query_interval;
1259 iface->last_member_query_cnt =
1260 defs->last_member_query_cnt;
1261 iface->dead_interval = defs->dead_interval;
1262 iface->metric = defs->metric;
1263 iface->robustness = defs->robustness;
1264 iface->igmp_version = defs->igmp_version;
1265 if (grdefs)
1266 defs = grdefs;
1267 else
1268 defs = &globaldefs;
1269 iface = NULL((void *)0);
1270 }
1271break;
1272case 33:
1273#line 340 "/usr/src/usr.sbin/dvmrpd/parse.y"
1274{ iface->passive = 1; }
1275break;
1276case 35:
1277#line 344 "/usr/src/usr.sbin/dvmrpd/parse.y"
1278{
1279 memcpy(&groupdefs, defs, sizeof(groupdefs));
1280 grdefs = defs = &groupdefs;
1281 }
1282break;
1283case 36:
1284#line 348 "/usr/src/usr.sbin/dvmrpd/parse.y"
1285{
1286 grdefs = NULL((void *)0);
1287 defs = &globaldefs;
1288 }
1289break;
1290#line 1283 "parse.c"
1291 }
1292 yyssp -= yym;
1293 yystate = *yyssp;
1294 yyvsp -= yym;
1295 yym = yylhs[yyn];
1296 if (yystate
5.1
'yystate' is equal to 0
 == 0 && yym
5.2
'yym' is equal to 0
 == 0)
6
←
Taking true branch
→
1297 {
1298#if YYDEBUG0
1299 if (yydebug)
1300 printf("%sdebug: after reduction, shifting from state 0 to\
1301 state %d\n", YYPREFIX"yy", YYFINAL1);
1302#endif
1303 yystate = YYFINAL1;
1304 *++yyssp = YYFINAL1;
1305 *++yyvsp = yyval;
1306 if (yychar
6.1
'yychar' is < 0
 < 0)
7
←
Taking true branch
→
1307 {
1308 if ((yychar = yylex()) < 0) yychar = 0;
8
←
Assuming the condition is false
→
9
←
Taking false branch
→
1309#if YYDEBUG0
1310 if (yydebug)
1311 {
1312 yys = 0;
1313 if (yychar <= YYMAXTOKEN272) yys = yyname[yychar];
1314 if (!yys) yys = "illegal-symbol";
1315 printf("%sdebug: state %d, reading %d (%s)\n",
1316 YYPREFIX"yy", YYFINAL1, yychar, yys);
1317 }
1318#endif
1319 }
1320 if (yychar == 0) goto yyaccept;
10
←
Assuming 'yychar' is not equal to 0
→
11
←
Taking false branch
→
1321 goto yyloop;
12
←
Control jumps to line 935
→
1322 }
1323 if ((yyn = yygindex[yym]) && (yyn += yystate) >= 0 &&
1324 yyn <= YYTABLESIZE261 && yycheck[yyn] == yystate)
1325 yystate = yytable[yyn];
1326 else
1327 yystate = yydgoto[yym];
1328#if YYDEBUG0
1329 if (yydebug)
1330 printf("%sdebug: after reduction, shifting from state %d \
1331to state %d\n", YYPREFIX"yy", *yyssp, yystate);
1332#endif
1333 if (yyssp >= yysslim && yygrowstack())
1334 {
1335 goto yyoverflow;
1336 }
1337 *++yyssp = yystate;
1338 *++yyvsp = yyval;
1339 goto yyloop;
1340yyoverflow:
1341 yyerror("yacc stack overflow");
1342yyabort:
1343 if (yyss)
1344 free(yyss);
1345 if (yyvs)
1346 free(yyvs);
1347 yyss = yyssp = NULL((void *)0);
1348 yyvs = yyvsp = NULL((void *)0);
1349 yystacksize = 0;
1350 return (1);
1351yyaccept:
1352 if (yyss)
1353 free(yyss);
1354 if (yyvs)
1355 free(yyvs);
1356 yyss = yyssp = NULL((void *)0);
1357 yyvs = yyvsp = NULL((void *)0);
1358 yystacksize = 0;
1359 return (0);
1360}