Head

GCC Code Coverage Report
Directory:	./		Exec	Total	Coverage
File:	usr.sbin/snmpd/parse.c	Lines:	186	350	53.1 %
Date:	2017-11-07	Branches:	105	249	42.2 %

#include <stdlib.h>
#include <string.h>
#define YYBYACC 1
#define YYMAJOR 1
#define YYMINOR 9
#define YYLEX yylex()
#define YYEMPTY -1
#define yyclearin (yychar=(YYEMPTY))
#define yyerrok (yyerrflag=0)
#define YYRECOVERING() (yyerrflag!=0)
#define YYPREFIX "yy"
#line 26 "parse.y"
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/queue.h>
#include <sys/tree.h>

#include <netinet/in.h>
#include <net/if.h>

#include <arpa/inet.h>
#include <arpa/nameser.h>

#include <ctype.h>
#include <unistd.h>
#include <err.h>
#include <errno.h>
#include <event.h>
#include <limits.h>
#include <stdint.h>
#include <stdarg.h>
#include <stdio.h>
#include <netdb.h>
#include <string.h>
#include <syslog.h>

#include "snmpd.h"
#include "mib.h"

enum socktype {
	SOCK_TYPE_RESTRICTED = 1,
	SOCK_TYPE_AGENTX = 2
};

TAILQ_HEAD(files, file)		 files = TAILQ_HEAD_INITIALIZER(files);
static struct file {
	TAILQ_ENTRY(file)	 entry;
	FILE			*stream;
	char			*name;
	int			 lineno;
	int			 errors;
} *file, *topfile;
struct file	*pushfile(const char *, int);
int		 popfile(void);
int		 check_file_secrecy(int, const char *);
int		 yyparse(void);
int		 yylex(void);
int		 yyerror(const char *, ...)
    __attribute__((__format__ (printf, 1, 2)))
    __attribute__((__nonnull__ (1)));
int		 kw_cmp(const void *, const void *);
int		 lookup(char *);
int		 lgetc(int);
int		 lungetc(int);
int		 findeol(void);

TAILQ_HEAD(symhead, sym)	 symhead = TAILQ_HEAD_INITIALIZER(symhead);
struct sym {
	TAILQ_ENTRY(sym)	 entry;
	int			 used;
	int			 persist;
	char			*nam;
	char			*val;
};
int		 symset(const char *, const char *, int);
char		*symget(const char *);

struct snmpd			*conf = NULL;
static int			 errors = 0;
static struct addresslist	*hlist;
static struct usmuser		*user = NULL;
static int			 nctlsocks = 0;

struct address	*host_v4(const char *);
struct address	*host_v6(const char *);
int		 host_dns(const char *, struct addresslist *,
		    int, in_port_t, struct ber_oid *, char *,
		    struct address *);
int		 host(const char *, struct addresslist *,
		    int, in_port_t, struct ber_oid *, char *, char *);

typedef struct {
	union {
		int64_t		 number;
		char		*string;
		struct host	*host;
		struct timeval	 tv;
		struct ber_oid	*oid;
		struct {
			int		 type;
			void		*data;
			long long	 value;
		}		 data;
		enum usmauth	 auth;
		enum usmpriv	 enc;
	} v;
	int lineno;
} YYSTYPE;

#line 112 "parse.c"
#define INCLUDE 257
#define LISTEN 258
#define ON 259
#define SYSTEM 260
#define CONTACT 261
#define DESCR 262
#define LOCATION 263
#define NAME 264
#define OBJECTID 265
#define SERVICES 266
#define RTFILTER 267
#define READONLY 268
#define READWRITE 269
#define OCTETSTRING 270
#define INTEGER 271
#define COMMUNITY 272
#define TRAP 273
#define RECEIVER 274
#define SECLEVEL 275
#define NONE 276
#define AUTH 277
#define ENC 278
#define USER 279
#define AUTHKEY 280
#define ENCKEY 281
#define ERROR 282
#define DISABLED 283
#define SOCKET 284
#define RESTRICTED 285
#define AGENTX 286
#define HANDLE 287
#define DEFAULT 288
#define SRCADDR 289
#define STRING 290
#define NUMBER 291
#define YYERRCODE 256
const short yylhs[] =
	{                                        -1,
    0,    0,    0,    0,    0,    0,    0,    0,   14,   15,
    4,   16,   16,   16,   16,   16,   20,   16,   16,   16,
   16,   22,   16,   16,   17,   23,   23,   23,   23,   23,
   23,   18,    7,    7,    3,    3,    9,   11,   11,   10,
   10,    1,    1,    2,    2,   24,   25,   25,   19,   19,
   26,   26,    5,    5,    5,   21,   21,   27,   27,   27,
   27,   12,   13,    6,    6,    6,    8,
};
const short yylen[] =
	{                                         2,
    0,    3,    2,    3,    3,    3,    3,    3,    2,    3,
    1,    3,    3,    3,    2,    3,    0,    4,    5,    2,
    2,    0,    4,    3,    2,    2,    2,    2,    2,    2,
    2,    6,    2,    2,    1,    1,    1,    1,    1,    0,
    2,    0,    2,    0,    2,    4,    0,    3,    1,    3,
    0,    1,    1,    1,    1,    0,    2,    2,    2,    2,
    2,    1,    1,    1,    1,    0,    1,
};
const short yydefred[] =
	{                                      1,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    3,    0,    0,    0,    0,    0,
    8,    9,    0,    0,    0,    0,    0,    0,    0,   25,
   37,    0,   11,   20,    0,    0,   15,    0,   17,    0,
   53,   54,   55,   21,   22,    0,    0,    2,    4,    5,
    6,    7,   12,   26,   27,   28,   29,   30,   31,    0,
   13,   14,   16,    0,    0,    0,   56,   64,   65,   24,
   10,    0,    0,   47,   18,   49,   43,   39,   38,    0,
    0,   35,   36,    0,    0,    0,    0,   67,   19,    0,
    0,    0,    0,   57,    0,    0,   32,   41,    0,   50,
   52,    0,   62,   59,   63,   61,   58,   60,   34,   33,
    0,   46,   48,   45,
};
const short yydgoto[] =
	{                                       1,
   66,  112,   84,   34,   44,   70,   97,   89,   32,   86,
   80,  104,  106,   16,   17,   18,   19,   20,   75,   64,
   81,   67,   30,   76,   87,  102,   94,
};
const short yysindex[] =
	{                                      0,
  -10,    6, -256, -224, -251, -248, -247, -235, -264, -265,
 -253, -245, -244,  -14,    0,   38,   39,   40,   41,   42,
    0,    0, -237, -234, -233, -232, -231, -248, -229,    0,
    0, -210,    0,    0, -226, -225,    0, -223,    0, -217,
    0,    0,    0,    0,    0, -255, -222,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0, -221,
    0,    0,    0, -122, -220, -262,    0,    0,    0,    0,
    0, -236, -205,    0,    0,    0,    0,    0,    0, -219,
 -260,    0,    0, -230, -248, -217,  -41,    0,    0, -218,
 -216, -215, -214,    0, -213, -212,    0,    0, -228,    0,
    0, -209,    0,    0,    0,    0,    0,    0,    0,    0,
 -208,    0,    0,    0,};
const short yyrindex[] =
	{                                      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,    0, -261,
    0,    0,    0,    0,    0,   56,    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,   -8,    0,    0,    0,    0,    0,    0,    0,
   63,    0,    0,    0,    0,   -6, -207,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,   -5,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,};
const short yygindex[] =
	{                                      0,
   -1,    0,    0,    0,    0,    0,    0,    0,  -22,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,  -24,    0,    0,    0,
};
#define YYTABLESIZE 285
const short yytable[] =
	{                                      15,
   74,   40,  101,   42,   44,   58,   38,   36,   39,   24,
   25,   26,   27,   28,   29,   21,   90,   91,   37,   92,
   93,   40,   41,   42,   43,   78,   42,   31,   42,   68,
   69,   82,   83,   22,   23,   40,   35,   42,   44,   95,
   96,   31,   33,   79,   45,   46,   47,   48,   49,   50,
   51,   52,   53,   60,   65,   54,   55,   56,   57,   85,
  111,   59,   98,   61,   62,   66,   63,   71,   72,   77,
   88,  103,   23,  105,  107,  108,  109,  113,  110,    0,
   73,  114,   51,  100,   99,    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,   40,    0,   42,   44,
    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,    0,
    0,    0,    0,    0,    0,    0,    0,   73,    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,    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,    2,    3,    4,    0,    5,
    0,    0,    0,    0,    6,    0,    7,    8,    9,    0,
    0,    0,   10,   40,   11,    0,    0,    0,   12,    0,
    0,    0,    0,   13,    0,    0,    0,    0,    0,   14,
   40,   40,   42,   42,   44,
};
const short yycheck[] =
	{                                      10,
  123,   10,   44,   10,   10,   28,  272,  272,  274,  261,
  262,  263,  264,  265,  266,   10,  277,  278,  283,  280,
  281,  287,  276,  277,  278,  288,  288,  290,  290,  285,
  286,  268,  269,  290,  259,   44,  272,   44,   44,  270,
  271,  290,  290,   66,  290,  290,   61,   10,   10,   10,
   10,   10,  290,  264,  272,  290,  290,  290,  290,  265,
  289,  291,   85,  290,  290,   10,  290,  290,  290,  290,
  290,  290,   10,  290,  290,  290,  290,  102,  291,   -1,
  290,  290,  290,  125,   86,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,  125,   -1,  125,  125,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,  290,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,  256,  257,  258,   -1,  260,
   -1,   -1,   -1,   -1,  265,   -1,  267,  268,  269,   -1,
   -1,   -1,  273,  272,  275,   -1,   -1,   -1,  279,   -1,
   -1,   -1,   -1,  284,   -1,   -1,   -1,   -1,   -1,  290,
  289,  290,  289,  290,  290,
};
#define YYFINAL 1
#ifndef YYDEBUG
#define YYDEBUG 0
#endif
#define YYMAXTOKEN 291
#if YYDEBUG
const char * const yyname[] =
	{
"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,
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,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,"'{'",0,"'}'",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,"INCLUDE",
"LISTEN","ON","SYSTEM","CONTACT","DESCR","LOCATION","NAME","OBJECTID",
"SERVICES","RTFILTER","READONLY","READWRITE","OCTETSTRING","INTEGER",
"COMMUNITY","TRAP","RECEIVER","SECLEVEL","NONE","AUTH","ENC","USER","AUTHKEY",
"ENCKEY","ERROR","DISABLED","SOCKET","RESTRICTED","AGENTX","HANDLE","DEFAULT",
"SRCADDR","STRING","NUMBER",
};
const char * const yyrule[] =
	{"$accept : grammar",
"grammar :",
"grammar : grammar include '\\n'",
"grammar : grammar '\\n'",
"grammar : grammar varset '\\n'",
"grammar : grammar main '\\n'",
"grammar : grammar system '\\n'",
"grammar : grammar mib '\\n'",
"grammar : grammar error '\\n'",
"include : INCLUDE STRING",
"varset : STRING '=' STRING",
"yesno : STRING",
"main : LISTEN ON STRING",
"main : READONLY COMMUNITY STRING",
"main : READWRITE COMMUNITY STRING",
"main : READWRITE DISABLED",
"main : TRAP COMMUNITY STRING",
"$$1 :",
"main : TRAP RECEIVER $$1 host",
"main : TRAP HANDLE hostcmn trapoid cmd",
"main : RTFILTER yesno",
"main : SECLEVEL seclevel",
"$$2 :",
"main : USER STRING $$2 userspecs",
"main : SOCKET STRING socktype",
"system : SYSTEM sysmib",
"sysmib : CONTACT STRING",
"sysmib : DESCR STRING",
"sysmib : LOCATION STRING",
"sysmib : NAME STRING",
"sysmib : OBJECTID oid",
"sysmib : SERVICES NUMBER",
"mib : OBJECTID oid NAME STRING optwrite objtype",
"objtype : INTEGER NUMBER",
"objtype : OCTETSTRING STRING",
"optwrite : READONLY",
"optwrite : READWRITE",
"oid : STRING",
"trapoid : oid",
"trapoid : DEFAULT",
"hostoid :",
"hostoid : OBJECTID oid",
"hostcmn :",
"hostcmn : COMMUNITY STRING",
"srcaddr :",
"srcaddr : SRCADDR STRING",
"hostdef : STRING hostoid hostcmn srcaddr",
"hostlist :",
"hostlist : hostlist comma hostdef",
"host : hostdef",
"host : '{' hostlist '}'",
"comma :",
"comma : ','",
"seclevel : NONE",
"seclevel : AUTH",
"seclevel : ENC",
"userspecs :",
"userspecs : userspecs userspec",
"userspec : AUTHKEY STRING",
"userspec : AUTH auth",
"userspec : ENCKEY STRING",
"userspec : ENC enc",
"auth : STRING",
"enc : STRING",
"socktype : RESTRICTED",
"socktype : AGENTX",
"socktype :",
"cmd : STRING",
};
#endif
#ifdef YYSTACKSIZE
#undef YYMAXDEPTH
#define YYMAXDEPTH YYSTACKSIZE
#else
#ifdef YYMAXDEPTH
#define YYSTACKSIZE YYMAXDEPTH
#else
#define YYSTACKSIZE 10000
#define YYMAXDEPTH 10000
#endif
#endif
#define YYINITSTACKSIZE 200
/* LINTUSED */
int yydebug;
int yynerrs;
int yyerrflag;
int yychar;
short *yyssp;
YYSTYPE *yyvsp;
YYSTYPE yyval;
YYSTYPE yylval;
short *yyss;
short *yysslim;
YYSTYPE *yyvs;
unsigned int yystacksize;
int yyparse(void);
#line 574 "parse.y"

struct keywords {
	const char	*k_name;
	int		 k_val;
};

int
yyerror(const char *fmt, ...)
{
	va_list		 ap;
	char		*msg;

	file->errors++;
	va_start(ap, fmt);
	if (vasprintf(&msg, fmt, ap) == -1)
		fatalx("yyerror vasprintf");
	va_end(ap);
	logit(LOG_CRIT, "%s:%d: %s", file->name, yylval.lineno, msg);
	free(msg);
	return (0);
}

int
kw_cmp(const void *k, const void *e)
{
	return (strcmp(k, ((const struct keywords *)e)->k_name));
}

int
lookup(char *s)
{
	/* this has to be sorted always */
	static const struct keywords keywords[] = {
		{ "agentx",		AGENTX },
		{ "auth",		AUTH },
		{ "authkey",		AUTHKEY },
		{ "community",		COMMUNITY },
		{ "contact",		CONTACT },
		{ "default",		DEFAULT },
		{ "description",	DESCR },
		{ "disabled",		DISABLED},
		{ "enc",		ENC },
		{ "enckey",		ENCKEY },
		{ "filter-routes",	RTFILTER },
		{ "handle",		HANDLE },
		{ "include",		INCLUDE },
		{ "integer",		INTEGER },
		{ "listen",		LISTEN },
		{ "location",		LOCATION },
		{ "name",		NAME },
		{ "none",		NONE },
		{ "oid",		OBJECTID },
		{ "on",			ON },
		{ "read-only",		READONLY },
		{ "read-write",		READWRITE },
		{ "receiver",		RECEIVER },
		{ "restricted",		RESTRICTED },
		{ "seclevel",		SECLEVEL },
		{ "services",		SERVICES },
		{ "socket",		SOCKET },
		{ "source-address",	SRCADDR },
		{ "string",		OCTETSTRING },
		{ "system",		SYSTEM },
		{ "trap",		TRAP },
		{ "user",		USER }
	};
	const struct keywords	*p;

	p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]),
	    sizeof(keywords[0]), kw_cmp);

	if (p)
		return (p->k_val);
	else
		return (STRING);
}

#define MAXPUSHBACK	128

u_char	*parsebuf;
int	 parseindex;
u_char	 pushback_buffer[MAXPUSHBACK];
int	 pushback_index = 0;

int
lgetc(int quotec)
{
	int		c, next;

	if (parsebuf) {
		/* Read character from the parsebuffer instead of input. */
		if (parseindex >= 0) {
			c = parsebuf[parseindex++];
			if (c != '\0')
				return (c);
			parsebuf = NULL;
		} else
			parseindex++;
	}

	if (pushback_index)
		return (pushback_buffer[--pushback_index]);

	if (quotec) {
		if ((c = getc(file->stream)) == EOF) {
			yyerror("reached end of file while parsing quoted string");
			if (file == topfile || popfile() == EOF)
				return (EOF);
			return (quotec);
		}
		return (c);
	}

	while ((c = getc(file->stream)) == '\\') {
		next = getc(file->stream);
		if (next != '\n') {
			c = next;
			break;
		}
		yylval.lineno = file->lineno;
		file->lineno++;
	}
	if (c == '\t' || c == ' ') {
		/* Compress blanks to a single space. */
		do {
			c = getc(file->stream);
		} while (c == '\t' || c == ' ');
		ungetc(c, file->stream);
		c = ' ';
	}

	while (c == EOF) {
		if (file == topfile || popfile() == EOF)
			return (EOF);
		c = getc(file->stream);
	}
	return (c);
}

int
lungetc(int c)
{
	if (c == EOF)
		return (EOF);
	if (parsebuf) {
		parseindex--;
		if (parseindex >= 0)
			return (c);
	}
	if (pushback_index < MAXPUSHBACK-1)
		return (pushback_buffer[pushback_index++] = c);
	else
		return (EOF);
}

int
findeol(void)
{
	int	c;

	parsebuf = NULL;

	/* skip to either EOF or the first real EOL */
	while (1) {
		if (pushback_index)
			c = pushback_buffer[--pushback_index];
		else
			c = lgetc(0);
		if (c == '\n') {
			file->lineno++;
			break;
		}
		if (c == EOF)
			break;
	}
	return (ERROR);
}

int
yylex(void)
{
	u_char	 buf[8096];
	u_char	*p, *val;
	int	 quotec, next, c;
	int	 token;

top:
	p = buf;
	while ((c = lgetc(0)) == ' ' || c == '\t')
		; /* nothing */

	yylval.lineno = file->lineno;
	if (c == '#')
		while ((c = lgetc(0)) != '\n' && c != EOF)
			; /* nothing */
	if (c == '$' && parsebuf == NULL) {
		while (1) {
			if ((c = lgetc(0)) == EOF)
				return (0);

			if (p + 1 >= buf + sizeof(buf) - 1) {
				yyerror("string too long");
				return (findeol());
			}
			if (isalnum(c) || c == '_') {
				*p++ = c;
				continue;
			}
			*p = '\0';
			lungetc(c);
			break;
		}
		val = symget(buf);
		if (val == NULL) {
			yyerror("macro '%s' not defined", buf);
			return (findeol());
		}
		parsebuf = val;
		parseindex = 0;
		goto top;
	}

	switch (c) {
	case '\'':
	case '"':
		quotec = c;
		while (1) {
			if ((c = lgetc(quotec)) == EOF)
				return (0);
			if (c == '\n') {
				file->lineno++;
				continue;
			} else if (c == '\\') {
				if ((next = lgetc(quotec)) == EOF)
					return (0);
				if (next == quotec || c == ' ' || c == '\t')
					c = next;
				else if (next == '\n') {
					file->lineno++;
					continue;
				} else
					lungetc(next);
			} else if (c == quotec) {
				*p = '\0';
				break;
			} else if (c == '\0') {
				yyerror("syntax error");
				return (findeol());
			}
			if (p + 1 >= buf + sizeof(buf) - 1) {
				yyerror("string too long");
				return (findeol());
			}
			*p++ = c;
		}
		yylval.v.string = strdup(buf);
		if (yylval.v.string == NULL)
			err(1, "yylex: strdup");
		return (STRING);
	}

#define allowed_to_end_number(x) \
	(isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=')

	if (c == '-' || isdigit(c)) {
		do {
			*p++ = c;
			if ((unsigned)(p-buf) >= sizeof(buf)) {
				yyerror("string too long");
				return (findeol());
			}
		} while ((c = lgetc(0)) != EOF && isdigit(c));
		lungetc(c);
		if (p == buf + 1 && buf[0] == '-')
			goto nodigits;
		if (c == EOF || allowed_to_end_number(c)) {
			const char *errstr = NULL;

			*p = '\0';
			yylval.v.number = strtonum(buf, LLONG_MIN,
			    LLONG_MAX, &errstr);
			if (errstr) {
				yyerror("\"%s\" invalid number: %s",
				    buf, errstr);
				return (findeol());
			}
			return (NUMBER);
		} else {
nodigits:
			while (p > buf + 1)
				lungetc(*--p);
			c = *--p;
			if (c == '-')
				return (c);
		}
	}

#define allowed_in_string(x) \
	(isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \
	x != '{' && x != '}' && \
	x != '!' && x != '=' && x != '#' && \
	x != ','))

	if (isalnum(c) || c == ':' || c == '_') {
		do {
			*p++ = c;
			if ((unsigned)(p-buf) >= sizeof(buf)) {
				yyerror("string too long");
				return (findeol());
			}
		} while ((c = lgetc(0)) != EOF && (allowed_in_string(c)));
		lungetc(c);
		*p = '\0';
		if ((token = lookup(buf)) == STRING)
			if ((yylval.v.string = strdup(buf)) == NULL)
				err(1, "yylex: strdup");
		return (token);
	}
	if (c == '\n') {
		yylval.lineno = file->lineno;
		file->lineno++;
	}
	if (c == EOF)
		return (0);
	return (c);
}

int
check_file_secrecy(int fd, const char *fname)
{
	struct stat	st;

	if (fstat(fd, &st)) {
		log_warn("cannot stat %s", fname);
		return (-1);
	}
	if (st.st_uid != 0 && st.st_uid != getuid()) {
		log_warnx("%s: owner not root or current user", fname);
		return (-1);
	}
	if (st.st_mode & (S_IWGRP | S_IXGRP | S_IRWXO)) {
		log_warnx("%s: group writable or world read/writable", fname);
		return (-1);
	}
	return (0);
}

struct file *
pushfile(const char *name, int secret)
{
	struct file	*nfile;

	if ((nfile = calloc(1, sizeof(struct file))) == NULL) {
		log_warn("malloc");
		return (NULL);
	}
	if ((nfile->name = strdup(name)) == NULL) {
		log_warn("malloc");
		free(nfile);
		return (NULL);
	}
	if ((nfile->stream = fopen(nfile->name, "r")) == NULL) {
		log_warn("%s", nfile->name);
		free(nfile->name);
		free(nfile);
		return (NULL);
	} else if (secret &&
	    check_file_secrecy(fileno(nfile->stream), nfile->name)) {
		fclose(nfile->stream);
		free(nfile->name);
		free(nfile);
		return (NULL);
	}
	nfile->lineno = 1;
	TAILQ_INSERT_TAIL(&files, nfile, entry);
	return (nfile);
}

int
popfile(void)
{
	struct file	*prev;

	if ((prev = TAILQ_PREV(file, files, entry)) != NULL)
		prev->errors += file->errors;

	TAILQ_REMOVE(&files, file, entry);
	fclose(file->stream);
	free(file->name);
	free(file);
	file = prev;
	return (file ? 0 : EOF);
}

struct snmpd *
parse_config(const char *filename, u_int flags)
{
	struct sym	*sym, *next;

	if ((conf = calloc(1, sizeof(*conf))) == NULL) {
		log_warn("cannot allocate memory");
		return (NULL);
	}

	conf->sc_flags = flags;
	conf->sc_confpath = filename;
	TAILQ_INIT(&conf->sc_addresses);
	TAILQ_INIT(&conf->sc_sockets);
	conf->sc_ps.ps_csock.cs_name = SNMPD_SOCKET;
	TAILQ_INIT(&conf->sc_ps.ps_rcsocks);
	strlcpy(conf->sc_rdcommunity, "public", SNMPD_MAXCOMMUNITYLEN);
	strlcpy(conf->sc_rwcommunity, "private", SNMPD_MAXCOMMUNITYLEN);
	strlcpy(conf->sc_trcommunity, "public", SNMPD_MAXCOMMUNITYLEN);
	TAILQ_INIT(&conf->sc_trapreceivers);

	if ((file = pushfile(filename, 0)) == NULL) {
		free(conf);
		return (NULL);
	}
	topfile = file;
	setservent(1);

	yyparse();
	errors = file->errors;
	popfile();

	endservent();

	if (TAILQ_EMPTY(&conf->sc_addresses)) {
		struct address		*h;
		if ((h = calloc(1, sizeof(*h))) == NULL)
			fatal("snmpe: %s", __func__);
		h->ss.ss_family = AF_INET;
		h->port = SNMPD_PORT;
		TAILQ_INSERT_TAIL(&conf->sc_addresses, h, entry);
		if ((h = calloc(1, sizeof(*h))) == NULL)
			fatal("snmpe: %s", __func__);
		h->ss.ss_family = AF_INET6;
		h->port = SNMPD_PORT;
		TAILQ_INSERT_TAIL(&conf->sc_addresses, h, entry);
	}

	/* Free macros and check which have not been used. */
	TAILQ_FOREACH_SAFE(sym, &symhead, entry, next) {
		if ((conf->sc_flags & SNMPD_F_VERBOSE) && !sym->used)
			fprintf(stderr, "warning: macro '%s' not "
			    "used\n", sym->nam);
		if (!sym->persist) {
			free(sym->nam);
			free(sym->val);
			TAILQ_REMOVE(&symhead, sym, entry);
			free(sym);
		}
	}

	if (errors) {
		free(conf);
		return (NULL);
	}

	return (conf);
}

int
symset(const char *nam, const char *val, int persist)
{
	struct sym	*sym;

	TAILQ_FOREACH(sym, &symhead, entry) {
		if (strcmp(nam, sym->nam) == 0)
			break;
	}

	if (sym != NULL) {
		if (sym->persist == 1)
			return (0);
		else {
			free(sym->nam);
			free(sym->val);
			TAILQ_REMOVE(&symhead, sym, entry);
			free(sym);
		}
	}
	if ((sym = calloc(1, sizeof(*sym))) == NULL)
		return (-1);

	sym->nam = strdup(nam);
	if (sym->nam == NULL) {
		free(sym);
		return (-1);
	}
	sym->val = strdup(val);
	if (sym->val == NULL) {
		free(sym->nam);
		free(sym);
		return (-1);
	}
	sym->used = 0;
	sym->persist = persist;
	TAILQ_INSERT_TAIL(&symhead, sym, entry);
	return (0);
}

int
cmdline_symset(char *s)
{
	char	*sym, *val;
	int	ret;
	size_t	len;

	if ((val = strrchr(s, '=')) == NULL)
		return (-1);

	len = strlen(s) - strlen(val) + 1;
	if ((sym = malloc(len)) == NULL)
		errx(1, "cmdline_symset: malloc");

	(void)strlcpy(sym, s, len);

	ret = symset(sym, val + 1, 1);
	free(sym);

	return (ret);
}

char *
symget(const char *nam)
{
	struct sym	*sym;

	TAILQ_FOREACH(sym, &symhead, entry) {
		if (strcmp(nam, sym->nam) == 0) {
			sym->used = 1;
			return (sym->val);
		}
	}
	return (NULL);
}

struct address *
host_v4(const char *s)
{
	struct in_addr		 ina;
	struct sockaddr_in	*sain;
	struct address		*h;

	bzero(&ina, sizeof(ina));
	if (inet_pton(AF_INET, s, &ina) != 1)
		return (NULL);

	if ((h = calloc(1, sizeof(*h))) == NULL)
		fatal(__func__);
	sain = (struct sockaddr_in *)&h->ss;
	sain->sin_len = sizeof(struct sockaddr_in);
	sain->sin_family = AF_INET;
	sain->sin_addr.s_addr = ina.s_addr;

	return (h);
}

struct address *
host_v6(const char *s)
{
	struct addrinfo		 hints, *res;
	struct sockaddr_in6	*sa_in6;
	struct address		*h = NULL;

	bzero(&hints, sizeof(hints));
	hints.ai_family = AF_INET6;
	hints.ai_socktype = SOCK_DGRAM; /* dummy */
	hints.ai_flags = AI_NUMERICHOST;
	if (getaddrinfo(s, "0", &hints, &res) == 0) {
		if ((h = calloc(1, sizeof(*h))) == NULL)
			fatal(__func__);
		sa_in6 = (struct sockaddr_in6 *)&h->ss;
		sa_in6->sin6_len = sizeof(struct sockaddr_in6);
		sa_in6->sin6_family = AF_INET6;
		memcpy(&sa_in6->sin6_addr,
		    &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr,
		    sizeof(sa_in6->sin6_addr));
		sa_in6->sin6_scope_id =
		    ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id;

		freeaddrinfo(res);
	}

	return (h);
}

int
host_dns(const char *s, struct addresslist *al, int max,
	in_port_t port, struct ber_oid *oid, char *cmn, struct address *src)
{
	struct addrinfo		 hints, *res0, *res;
	int			 error, cnt = 0;
	struct sockaddr_in	*sain;
	struct sockaddr_in6	*sin6;
	struct address		*h;

	bzero(&hints, sizeof(hints));
	hints.ai_family = PF_UNSPEC;
	hints.ai_socktype = SOCK_DGRAM; /* DUMMY */
	hints.ai_flags = AI_ADDRCONFIG;
	error = getaddrinfo(s, NULL, &hints, &res0);
	if (error == EAI_AGAIN || error == EAI_NODATA || error == EAI_NONAME)
		return (0);
	if (error) {
		log_warnx("host_dns: could not parse \"%s\": %s", s,
		    gai_strerror(error));
		return (-1);
	}

	for (res = res0; res && cnt < max; res = res->ai_next) {
		if (res->ai_family != AF_INET &&
		    res->ai_family != AF_INET6)
			continue;
		if (src != NULL && src->ss.ss_family != res->ai_family)
			continue;
		if ((h = calloc(1, sizeof(*h))) == NULL)
			fatal(__func__);

		h->port = port;
		if (oid != NULL) {
			if ((h->sa_oid = calloc(1, sizeof(*oid))) == NULL)
				fatal(__func__);
			bcopy(oid, h->sa_oid, sizeof(*oid));
		}
		if (cmn != NULL) {
			if ((h->sa_community = strdup(cmn)) == NULL)
				fatal(__func__);
		}

		h->ss.ss_family = res->ai_family;
		if (res->ai_family == AF_INET) {
			sain = (struct sockaddr_in *)&h->ss;
			sain->sin_len = sizeof(struct sockaddr_in);
			sain->sin_addr.s_addr = ((struct sockaddr_in *)
			    res->ai_addr)->sin_addr.s_addr;
		} else {
			sin6 = (struct sockaddr_in6 *)&h->ss;
			sin6->sin6_len = sizeof(struct sockaddr_in6);
			memcpy(&sin6->sin6_addr, &((struct sockaddr_in6 *)
			    res->ai_addr)->sin6_addr, sizeof(struct in6_addr));
		}

		h->sa_srcaddr = src;

		TAILQ_INSERT_TAIL(al, h, entry);
		cnt++;
	}
	if (cnt == max && res) {
		log_warnx("host_dns: %s resolves to more than %d hosts",
		    s, max);
	}
	freeaddrinfo(res0);
	if (oid != NULL)
		free(oid);
	if (cmn != NULL)
		free(cmn);
	return (cnt);
}

int
host(const char *s, struct addresslist *al, int max,
    in_port_t port, struct ber_oid *oid, char *cmn, char *srcaddr)
{
	struct address	*h, *src = NULL;

	if (srcaddr != NULL) {
		src = host_v4(srcaddr);
		if (src == NULL)
			src = host_v6(srcaddr);
		if (src == NULL) {
			log_warnx("invalid source-address %s", srcaddr);
			return (-1);
		}
	}

	h = host_v4(s);

	/* IPv6 address? */
	if (h == NULL)
		h = host_v6(s);

	if (h != NULL) {
		h->port = port;
		h->sa_oid = oid;
		h->sa_community = cmn;
		if (src != NULL && h->ss.ss_family != src->ss.ss_family) {
			log_warnx("host and source-address family mismatch");
			return (-1);
		}
		h->sa_srcaddr = src;

		TAILQ_INSERT_TAIL(al, h, entry);
		return (1);
	}

	return (host_dns(s, al, max, port, oid, cmn, src));
}
#line 1100 "parse.c"
/* allocate initial stack or double stack size, up to YYMAXDEPTH */
static int yygrowstack(void)
{
    unsigned int newsize;
    long sslen;
    short *newss;
    YYSTYPE *newvs;

    if ((newsize = yystacksize) == 0)
        newsize = YYINITSTACKSIZE;
    else if (newsize >= YYMAXDEPTH)
        return -1;
    else if ((newsize *= 2) > YYMAXDEPTH)
        newsize = YYMAXDEPTH;
    sslen = yyssp - yyss;
#ifdef SIZE_MAX
#define YY_SIZE_MAX SIZE_MAX
#else
#define YY_SIZE_MAX 0xffffffffU
#endif
    if (newsize && YY_SIZE_MAX / newsize < sizeof *newss)
        goto bail;
    newss = yyss ? (short *)realloc(yyss, newsize * sizeof *newss) :
      (short *)malloc(newsize * sizeof *newss); /* overflow check above */
    if (newss == NULL)
        goto bail;
    yyss = newss;
    yyssp = newss + sslen;
    if (newsize && YY_SIZE_MAX / newsize < sizeof *newvs)
        goto bail;
    newvs = yyvs ? (YYSTYPE *)realloc(yyvs, newsize * sizeof *newvs) :
      (YYSTYPE *)malloc(newsize * sizeof *newvs); /* overflow check above */
    if (newvs == NULL)
        goto bail;
    yyvs = newvs;
    yyvsp = newvs + sslen;
    yystacksize = newsize;
    yysslim = yyss + newsize - 1;
    return 0;
bail:
    if (yyss)
            free(yyss);
    if (yyvs)
            free(yyvs);
    yyss = yyssp = NULL;
    yyvs = yyvsp = NULL;
    yystacksize = 0;
    return -1;
}

#define YYABORT goto yyabort
#define YYREJECT goto yyabort
#define YYACCEPT goto yyaccept
#define YYERROR goto yyerrlab
int
yyparse(void)
{
    int yym, yyn, yystate;
#if YYDEBUG
    const char *yys;

    if ((yys = getenv("YYDEBUG")))
    {
        yyn = *yys;
        if (yyn >= '0' && yyn <= '9')
            yydebug = yyn - '0';
    }
#endif /* YYDEBUG */

    yynerrs = 0;
    yyerrflag = 0;
    yychar = (-1);

    if (yyss == NULL && yygrowstack()) goto yyoverflow;
    yyssp = yyss;
    yyvsp = yyvs;
    *yyssp = yystate = 0;

yyloop:
    if ((yyn = yydefred[yystate]) != 0) goto yyreduce;
    if (yychar < 0)
    {
        if ((yychar = yylex()) < 0) yychar = 0;
#if YYDEBUG
        if (yydebug)
        {
            yys = 0;
            if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
            if (!yys) yys = "illegal-symbol";
            printf("%sdebug: state %d, reading %d (%s)\n",
                    YYPREFIX, yystate, yychar, yys);
        }
#endif
    }
    if ((yyn = yysindex[yystate]) && (yyn += yychar) >= 0 &&
            yyn <= YYTABLESIZE && yycheck[yyn] == yychar)
    {
#if YYDEBUG
        if (yydebug)
            printf("%sdebug: state %d, shifting to state %d\n",
                    YYPREFIX, yystate, yytable[yyn]);
#endif
        if (yyssp >= yysslim && yygrowstack())
        {
            goto yyoverflow;
        }
        *++yyssp = yystate = yytable[yyn];
        *++yyvsp = yylval;
        yychar = (-1);
        if (yyerrflag > 0)  --yyerrflag;
        goto yyloop;
    }
    if ((yyn = yyrindex[yystate]) && (yyn += yychar) >= 0 &&
            yyn <= YYTABLESIZE && yycheck[yyn] == yychar)
    {
        yyn = yytable[yyn];
        goto yyreduce;
    }
    if (yyerrflag) goto yyinrecovery;
#if defined(__GNUC__)
    goto yynewerror;
#endif
yynewerror:
    yyerror("syntax error");
#if defined(__GNUC__)
    goto yyerrlab;
#endif
yyerrlab:
    ++yynerrs;
yyinrecovery:
    if (yyerrflag < 3)
    {
        yyerrflag = 3;
        for (;;)
        {
            if ((yyn = yysindex[*yyssp]) && (yyn += YYERRCODE) >= 0 &&
                    yyn <= YYTABLESIZE && yycheck[yyn] == YYERRCODE)
            {
#if YYDEBUG
                if (yydebug)
                    printf("%sdebug: state %d, error recovery shifting\
 to state %d\n", YYPREFIX, *yyssp, yytable[yyn]);
#endif
                if (yyssp >= yysslim && yygrowstack())
                {
                    goto yyoverflow;
                }
                *++yyssp = yystate = yytable[yyn];
                *++yyvsp = yylval;
                goto yyloop;
            }
            else
            {
#if YYDEBUG
                if (yydebug)
                    printf("%sdebug: error recovery discarding state %d\n",
                            YYPREFIX, *yyssp);
#endif
                if (yyssp <= yyss) goto yyabort;
                --yyssp;
                --yyvsp;
            }
        }
    }
    else
    {
        if (yychar == 0) goto yyabort;
#if YYDEBUG
        if (yydebug)
        {
            yys = 0;
            if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
            if (!yys) yys = "illegal-symbol";
            printf("%sdebug: state %d, error recovery discards token %d (%s)\n",
                    YYPREFIX, yystate, yychar, yys);
        }
#endif
        yychar = (-1);
        goto yyloop;
    }
yyreduce:
#if YYDEBUG
    if (yydebug)
        printf("%sdebug: state %d, reducing by rule %d (%s)\n",
                YYPREFIX, yystate, yyn, yyrule[yyn]);
#endif
    yym = yylen[yyn];
    if (yym)
        yyval = yyvsp[1-yym];
    else
        memset(&yyval, 0, sizeof yyval);
    switch (yyn)
    {
case 8:
#line 151 "parse.y"
{ file->errors++; }
break;
case 9:
#line 154 "parse.y"
{
			struct file	*nfile;

			if ((nfile = pushfile(yyvsp[0].v.string, 0)) == NULL) {
				yyerror("failed to include file %s", yyvsp[0].v.string);
				free(yyvsp[0].v.string);
				YYERROR;
			}
			free(yyvsp[0].v.string);

			file = nfile;
			lungetc('\n');
		}
break;
case 10:
#line 169 "parse.y"
{
			char *s = yyvsp[-2].v.string;
			while (*s++) {
				if (isspace((unsigned char)*s)) {
					yyerror("macro name cannot contain "
					    "whitespace");
					YYERROR;
				}
			}
			if (symset(yyvsp[-2].v.string, yyvsp[0].v.string, 0) == -1)
				fatal("cannot store variable");
			free(yyvsp[-2].v.string);
			free(yyvsp[0].v.string);
		}
break;
case 11:
#line 185 "parse.y"
{
			if (!strcmp(yyvsp[0].v.string, "yes"))
				yyval.v.number = 1;
			else if (!strcmp(yyvsp[0].v.string, "no"))
				yyval.v.number = 0;
			else {
				yyerror("syntax error, "
				    "either yes or no expected");
				free(yyvsp[0].v.string);
				YYERROR;
			}
			free(yyvsp[0].v.string);
		}
break;
case 12:
#line 200 "parse.y"
{
			if (host(yyvsp[0].v.string, &conf->sc_addresses, 16, SNMPD_PORT, NULL,
			    NULL, NULL) <= 0) {
				yyerror("invalid ip address: %s", yyvsp[0].v.string);
				free(yyvsp[0].v.string);
				YYERROR;
			}
			free(yyvsp[0].v.string);
		}
break;
case 13:
#line 209 "parse.y"
{
			if (strlcpy(conf->sc_rdcommunity, yyvsp[0].v.string,
			    sizeof(conf->sc_rdcommunity)) >=
			    sizeof(conf->sc_rdcommunity)) {
				yyerror("r/o community name too long");
				free(yyvsp[0].v.string);
				YYERROR;
			}
			free(yyvsp[0].v.string);
		}
break;
case 14:
#line 219 "parse.y"
{
			if (strlcpy(conf->sc_rwcommunity, yyvsp[0].v.string,
			    sizeof(conf->sc_rwcommunity)) >=
			    sizeof(conf->sc_rwcommunity)) {
				yyerror("r/w community name too long");
				free(yyvsp[0].v.string);
				YYERROR;
			}
			free(yyvsp[0].v.string);
		}
break;
case 15:
#line 229 "parse.y"
{
			conf->sc_readonly = 1;
 		}
break;
case 16:
#line 232 "parse.y"
{
			if (strlcpy(conf->sc_trcommunity, yyvsp[0].v.string,
			    sizeof(conf->sc_trcommunity)) >=
			    sizeof(conf->sc_trcommunity)) {
				yyerror("trap community name too long");
				free(yyvsp[0].v.string);
				YYERROR;
			}
			free(yyvsp[0].v.string);
		}
break;
case 17:
#line 242 "parse.y"
{
			hlist = &conf->sc_trapreceivers;
		}
break;
case 18:
#line 244 "parse.y"
{
			hlist = NULL;
		}
break;
case 19:
#line 247 "parse.y"
{
			struct trapcmd *cmd = yyvsp[0].v.data.data;

			cmd->cmd_oid = yyvsp[-1].v.oid;

			if (trapcmd_add(cmd) != 0) {
				free(yyvsp[-1].v.oid);
				free(cmd);
				yyerror("duplicate oid");
				YYERROR;
			}
			conf->sc_traphandler = 1;
		}
break;
case 20:
#line 260 "parse.y"
{
			if (yyvsp[0].v.number == 1)
				conf->sc_rtfilter = ROUTE_FILTER(RTM_NEWADDR) |
				    ROUTE_FILTER(RTM_DELADDR) |
				    ROUTE_FILTER(RTM_IFINFO) |
				    ROUTE_FILTER(RTM_IFANNOUNCE);
			else
				conf->sc_rtfilter = 0;
		}
break;
case 21:
#line 269 "parse.y"
{
			conf->sc_min_seclevel = yyvsp[0].v.number;
		}
break;
case 22:
#line 272 "parse.y"
{
			const char *errstr;
			user = usm_newuser(yyvsp[0].v.string, &errstr);
			if (user == NULL) {
				yyerror("%s", errstr);
				free(yyvsp[0].v.string);
				YYERROR;
			}
		}
break;
case 23:
#line 280 "parse.y"
{
			const char *errstr;
			if (usm_checkuser(user, &errstr) < 0) {
				yyerror("%s", errstr);
				YYERROR;
			}
			user = NULL;
		}
break;
case 24:
#line 288 "parse.y"
{
			if (yyvsp[0].v.number) {
				struct control_sock *rcsock;

				rcsock = calloc(1, sizeof(*rcsock));
				if (rcsock == NULL) {
					yyerror("calloc");
					YYERROR;
				}
				rcsock->cs_name = yyvsp[-1].v.string;
				if (yyvsp[0].v.number == SOCK_TYPE_RESTRICTED)
					rcsock->cs_restricted = 1;
				else if (yyvsp[0].v.number == SOCK_TYPE_AGENTX)
					rcsock->cs_agentx = 1;
				TAILQ_INSERT_TAIL(&conf->sc_ps.ps_rcsocks,
				    rcsock, cs_entry);
			} else {
				if (++nctlsocks > 1) {
					yyerror("multiple control "
					    "sockets specified");
					YYERROR;
				}
				conf->sc_ps.ps_csock.cs_name = yyvsp[-1].v.string;
			}
		}
break;
case 26:
#line 318 "parse.y"
{
			struct ber_oid	 o = OID(MIB_sysContact);
			mps_set(&o, yyvsp[0].v.string, strlen(yyvsp[0].v.string));
		}
break;
case 27:
#line 322 "parse.y"
{
			struct ber_oid	 o = OID(MIB_sysDescr);
			mps_set(&o, yyvsp[0].v.string, strlen(yyvsp[0].v.string));
		}
break;
case 28:
#line 326 "parse.y"
{
			struct ber_oid	 o = OID(MIB_sysLocation);
			mps_set(&o, yyvsp[0].v.string, strlen(yyvsp[0].v.string));
		}
break;
case 29:
#line 330 "parse.y"
{
			struct ber_oid	 o = OID(MIB_sysName);
			mps_set(&o, yyvsp[0].v.string, strlen(yyvsp[0].v.string));
		}
break;
case 30:
#line 334 "parse.y"
{
			struct ber_oid	 o = OID(MIB_sysOID);
			mps_set(&o, yyvsp[0].v.oid, sizeof(struct ber_oid));
		}
break;
case 31:
#line 338 "parse.y"
{
			struct ber_oid	 o = OID(MIB_sysServices);
			mps_set(&o, NULL, yyvsp[0].v.number);
		}
break;
case 32:
#line 344 "parse.y"
{
			struct oid	*oid;
			if ((oid = (struct oid *)
			    calloc(1, sizeof(*oid))) == NULL) {
				yyerror("calloc");
				free(yyvsp[-4].v.oid);
				free(yyvsp[0].v.data.data);
				YYERROR;
			}

			smi_oidlen(yyvsp[-4].v.oid);
			bcopy(yyvsp[-4].v.oid, &oid->o_id, sizeof(struct ber_oid));
			free(yyvsp[-4].v.oid);
			oid->o_name = yyvsp[-2].v.string;
			oid->o_data = yyvsp[0].v.data.data;
			oid->o_val = yyvsp[0].v.data.value;
			switch (yyvsp[0].v.data.type) {
			case 1:
				oid->o_get = mps_getint;
				oid->o_set = mps_setint;
				break;
			case 2:
				oid->o_get = mps_getstr;
				oid->o_set = mps_setstr;
				break;
			}
			oid->o_flags = OID_RD|OID_DYNAMIC;
			if (yyvsp[-1].v.number)
				oid->o_flags |= OID_WR;

			if (smi_insert(oid) == -1) {
				yyerror("duplicate oid");
				free(oid->o_name);
				free(oid->o_data);
				YYERROR;
			}
		}
break;
case 33:
#line 383 "parse.y"
{
			yyval.v.data.type = 1;
			yyval.v.data.data = NULL;
			yyval.v.data.value = yyvsp[0].v.number;
		}
break;
case 34:
#line 388 "parse.y"
{
			yyval.v.data.type = 2;
			yyval.v.data.data = yyvsp[0].v.string;
			yyval.v.data.value = strlen(yyvsp[0].v.string);
		}
break;
case 35:
#line 395 "parse.y"
{ yyval.v.number = 0; }
break;
case 36:
#line 396 "parse.y"
{ yyval.v.number = 1; }
break;
case 37:
#line 399 "parse.y"
{
			struct ber_oid	*sysoid;
			if ((sysoid =
			    calloc(1, sizeof(*sysoid))) == NULL) {
				yyerror("calloc");
				free(yyvsp[0].v.string);
				YYERROR;
			}
			if (ber_string2oid(yyvsp[0].v.string, sysoid) == -1) {
				yyerror("invalid OID: %s", yyvsp[0].v.string);
				free(sysoid);
				free(yyvsp[0].v.string);
				YYERROR;
			}
			free(yyvsp[0].v.string);
			yyval.v.oid = sysoid;
		}
break;
case 38:
#line 418 "parse.y"
{ yyval.v.oid = yyvsp[0].v.oid; }
break;
case 39:
#line 419 "parse.y"
{
			struct ber_oid	*sysoid;
			if ((sysoid =
			    calloc(1, sizeof(*sysoid))) == NULL) {
				yyerror("calloc");
				YYERROR;
			}
			ber_string2oid("1.3", sysoid);
			yyval.v.oid = sysoid;
		}
break;
case 40:
#line 431 "parse.y"
{ yyval.v.oid = NULL; }
break;
case 41:
#line 432 "parse.y"
{ yyval.v.oid = yyvsp[0].v.oid; }
break;
case 42:
#line 435 "parse.y"
{ yyval.v.string = NULL; }
break;
case 43:
#line 436 "parse.y"
{ yyval.v.string = yyvsp[0].v.string; }
break;
case 44:
#line 439 "parse.y"
{ yyval.v.string = NULL; }
break;
case 45:
#line 440 "parse.y"
{ yyval.v.string = yyvsp[0].v.string; }
break;
case 46:
#line 443 "parse.y"
{
			if (host(yyvsp[-3].v.string, hlist, 1,
			    SNMPD_TRAPPORT, yyvsp[-2].v.oid, yyvsp[-1].v.string, yyvsp[0].v.string) <= 0) {
				yyerror("invalid host: %s", yyvsp[-3].v.string);
				free(yyvsp[-3].v.string);
				YYERROR;
			}
			free(yyvsp[-3].v.string);
		}
break;
case 53:
#line 466 "parse.y"
{ yyval.v.number = 0; }
break;
case 54:
#line 467 "parse.y"
{ yyval.v.number = SNMP_MSGFLAG_AUTH; }
break;
case 55:
#line 468 "parse.y"
{ yyval.v.number = SNMP_MSGFLAG_AUTH | SNMP_MSGFLAG_PRIV; }
break;
case 58:
#line 475 "parse.y"
{
			user->uu_authkey = yyvsp[0].v.string;
		}
break;
case 59:
#line 478 "parse.y"
{
			user->uu_auth = yyvsp[0].v.auth;
		}
break;
case 60:
#line 481 "parse.y"
{
			user->uu_privkey = yyvsp[0].v.string;
		}
break;
case 61:
#line 484 "parse.y"
{
			user->uu_priv = yyvsp[0].v.enc;
		}
break;
case 62:
#line 489 "parse.y"
{
			if (strcasecmp(yyvsp[0].v.string, "hmac-md5") == 0 ||
			    strcasecmp(yyvsp[0].v.string, "hmac-md5-96") == 0)
				yyval.v.auth = AUTH_MD5;
			else if (strcasecmp(yyvsp[0].v.string, "hmac-sha1") == 0 ||
			     strcasecmp(yyvsp[0].v.string, "hmac-sha1-96") == 0)
				yyval.v.auth = AUTH_SHA1;
			else {
				yyerror("syntax error, bad auth hmac");
				free(yyvsp[0].v.string);
				YYERROR;
			}
			free(yyvsp[0].v.string);
		}
break;
case 63:
#line 505 "parse.y"
{
			if (strcasecmp(yyvsp[0].v.string, "des") == 0 ||
			    strcasecmp(yyvsp[0].v.string, "cbc-des") == 0)
				yyval.v.enc = PRIV_DES;
			else if (strcasecmp(yyvsp[0].v.string, "aes") == 0 ||
			    strcasecmp(yyvsp[0].v.string, "cfb128-aes-128") == 0)
				yyval.v.enc = PRIV_AES;
			else {
				yyerror("syntax error, bad encryption cipher");
				free(yyvsp[0].v.string);
				YYERROR;
			}
			free(yyvsp[0].v.string);

		}
break;
case 64:
#line 522 "parse.y"
{ yyval.v.number = SOCK_TYPE_RESTRICTED; }
break;
case 65:
#line 523 "parse.y"
{ yyval.v.number = SOCK_TYPE_AGENTX; }
break;
case 66:
#line 524 "parse.y"
{ yyval.v.number = 0; }
break;
case 67:
#line 527 "parse.y"
{
			struct trapcmd	*cmd;
			size_t		 span, limit;
			char		*pos, **args, **args2;
			int		 nargs = 32;		/* XXX */

			if ((cmd = calloc(1, sizeof(*cmd))) == NULL ||
			    (args = calloc(nargs, sizeof(char *))) == NULL) {
				free(cmd);
				free(yyvsp[0].v.string);
				YYERROR;
			}

			pos = yyvsp[0].v.string;
			limit = strlen(yyvsp[0].v.string);

			while (pos < yyvsp[0].v.string + limit &&
			    (span = strcspn(pos, " \t")) != 0) {
				pos[span] = '\0';
				args[cmd->cmd_argc] = strdup(pos);
				if (args[cmd->cmd_argc] == NULL) {
					trapcmd_free(cmd);
					free(args);
					free(yyvsp[0].v.string);
					YYERROR;
				}
				cmd->cmd_argc++;
				if (cmd->cmd_argc >= nargs - 1) {
					nargs *= 2;
					args2 = calloc(nargs, sizeof(char *));
					if (args2 == NULL) {
						trapcmd_free(cmd);
						free(args);
						free(yyvsp[0].v.string);
						YYERROR;
					}
					args = args2;
				}
				pos += span + 1;
			}
			free(yyvsp[0].v.string);
			cmd->cmd_argv = args;
			yyval.v.data.data = cmd;
		}
break;
#line 1810 "parse.c"
    }
    yyssp -= yym;
    yystate = *yyssp;
    yyvsp -= yym;
    yym = yylhs[yyn];
    if (yystate == 0 && yym == 0)
    {
#if YYDEBUG
        if (yydebug)
            printf("%sdebug: after reduction, shifting from state 0 to\
 state %d\n", YYPREFIX, YYFINAL);
#endif
        yystate = YYFINAL;
        *++yyssp = YYFINAL;
        *++yyvsp = yyval;
        if (yychar < 0)
        {
            if ((yychar = yylex()) < 0) yychar = 0;
#if YYDEBUG
            if (yydebug)
            {
                yys = 0;
                if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
                if (!yys) yys = "illegal-symbol";
                printf("%sdebug: state %d, reading %d (%s)\n",
                        YYPREFIX, YYFINAL, yychar, yys);
            }
#endif
        }
        if (yychar == 0) goto yyaccept;
        goto yyloop;
    }
    if ((yyn = yygindex[yym]) && (yyn += yystate) >= 0 &&
            yyn <= YYTABLESIZE && yycheck[yyn] == yystate)
        yystate = yytable[yyn];
    else
        yystate = yydgoto[yym];
#if YYDEBUG
    if (yydebug)
        printf("%sdebug: after reduction, shifting from state %d \
to state %d\n", YYPREFIX, *yyssp, yystate);
#endif
    if (yyssp >= yysslim && yygrowstack())
    {
        goto yyoverflow;
    }
    *++yyssp = yystate;
    *++yyvsp = yyval;
    goto yyloop;
yyoverflow:
    yyerror("yacc stack overflow");
yyabort:
    if (yyss)
            free(yyss);
    if (yyvs)
            free(yyvs);
    yyss = yyssp = NULL;
    yyvs = yyvsp = NULL;
    yystacksize = 0;
    return (1);
yyaccept:
    if (yyss)
            free(yyss);
    if (yyvs)
            free(yyvs);
    yyss = yyssp = NULL;
    yyvs = yyvsp = NULL;
    yystacksize = 0;
    return (0);
}

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