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parse.y
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/*
* Copyright (c) 2002, 2003, 2004 Niels Provos <provos@citi.umich.edu>
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
%{
#include <sys/types.h>
#include "config.h"
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#include <sys/tree.h>
#include <sys/queue.h>
#define _XOPEN_SOURCE /* glibc2 is stupid and needs this */
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <err.h>
#include <stdarg.h>
#include <string.h>
#include <errno.h>
#include <time.h>
#include <pcap.h>
#include <dnet.h>
#include <event.h>
#include "honeyd.h"
#include "personality.h"
#include "router.h"
#include "plugins_config.h"
#include "plugins.h"
#include "template.h"
#include "condition.h"
#include "interface.h"
#include "ethernet.h"
#include "pfvar.h"
#include "dhcpclient.h"
#include "subsystem.h"
#include "util.h"
#ifdef HAVE_PYTHON
#include "pyextend.h"
#endif
int hydlex(void);
int hydparse(void);
int hyderror(char *, ...);
int hydwarn(char *, ...);
int hydprintf(char *, ...);
void *hyd_scan_string(char *);
int hyd_delete_buffer(void *);
#define yylex hydlex
#define yyparse hydparse
#define yy_scan_string hyd_scan_string
#define yy_delete_buffer hyd_delete_buffer
#define yyerror hyderror
#define yywarn hydwarn
#define yyprintf hydprintf
#define yyin hydin
extern int honeyd_verify_config;
pf_osfp_t pfctl_get_fingerprint(const char *);
struct action *honeyd_protocol(struct template *, int);
void port_action_clone(struct action *, struct action *);
static void dhcp_template(struct template *tmpl,
char *interface, char *mac_addr);
static struct evbuffer *buffer = NULL;
int lineno;
char *filename;
int errors = 0;
int curtype = -1; /* Lex sets it to SOCK_STREAM or _DGRAM */
%}
%token CREATE ADD PORT BIND CLONE DOT BLOCK OPEN RESET DEFAULT SET ACTION
%token PERSONALITY RANDOM ANNOTATE NO FINSCAN FRAGMENT DROP OLD NEW COLON
%token PROXY UPTIME DROPRATE IN SYN UID GID ROUTE ENTRY LINK NET UNREACH
%token SLASH LATENCY MS LOSS BANDWIDTH SUBSYSTEM OPTION TO SHARED NETWORK
%token SPOOF FROM TEMPLATE
%token TUNNEL TARPIT DYNAMIC USE IF OTHERWISE EQUAL SOURCE OS IP BETWEEN
%token DELETE LIST ETHERNET DHCP ON MAXFDS RESTART DEBUG
%token DASH TIME INTERNAL
%token <string> STRING
%token <string> CMDSTRING
%token <string> IPSTRING
%token <number> NUMBER
%token <number> PROTO
%token <floatp> FLOAT
%type <addr> ipaddr
%type <addr> ipnet
%type <ai> ipaddrplusport
%type <action> action
%type <tmpl> template
%type <pers> personality
%type <number> finscan;
%type <fragp> fragment;
%type <floatp> rate;
%type <drop> randomearlydrop;
%type <number> latency;
%type <number> bandwidth;
%type <number> packetloss;
%type <number> shared;
%type <number> restart;
%type <number> flags;
%type <condition> condition;
%type <timecondition> timecondition;
%type <time> time;
%union {
char *string;
int number;
struct link_drop drop;
struct addr addr;
struct action action;
struct template *tmpl;
struct personality *pers;
struct addrinfo *ai;
enum fragpolicy fragp;
float floatp;
struct condition condition;
struct tm time;
struct condition_time timecondition;
}
%%
config : /* empty */
| config creation
| config addition
| config delete
| config subsystem
| config binding
| config set
| config annotate
| config route
| config option
| config ui
;
creation : CREATE STRING
{
if (template_create($2) == NULL)
yyerror("Template \"%s\" exists already", $2);
free($2);
}
| CREATE TEMPLATE
{
if (template_create("template") == NULL)
yyerror("Template \"template\" exists already");
}
| CREATE DEFAULT
{
if (template_create("default") == NULL)
yyerror("Template \"default\" exists already");
}
| DYNAMIC STRING
{
struct template *tmpl;
if ((tmpl = template_create($2)) == NULL)
yyerror("Template \"%s\" exists already", $2);
tmpl->flags |= TEMPLATE_DYNAMIC;
free($2);
}
;
delete : DELETE template
{
if ($2 != NULL)
template_free($2);
}
| DELETE template PROTO PORT NUMBER
{
struct port *port;
if ((port = port_find($2, $3, $5)) == NULL) {
yyerror("Cannot find port %d in \"%s\"",
$5, $2->name);
} else {
port_free($2, port);
}
}
;
addition : ADD template PROTO PORT NUMBER action
{
struct action *action;
if ($2 == NULL) {
yyerror("No template");
break;
}
if ((action = honeyd_protocol($2, $3)) == NULL) {
yyerror("Bad protocol");
break;
}
if ($2 != NULL && template_add($2, $3, $5, &$6) == -1)
yyerror("Cannot add port %d to template \"%s\"",
$5, $2 != NULL ? $2->name : "<unknown>");
if ($6.action)
free($6.action);
}
| ADD template USE template IF condition
{
if ($2 == NULL || $4 == NULL)
break;
if (!($2->flags & TEMPLATE_DYNAMIC))
yyerror("Cannot add templates to non-dynamic template \"%s\"", $2->name);
template_insert_dynamic($2, $4, &$6);
}
| ADD template OTHERWISE USE template
{
if ($2 == NULL || $5 == NULL)
break;
if (!($2->flags & TEMPLATE_DYNAMIC))
yyerror("Cannot add templates to non-dynamic template \"%s\"", $2->name);
template_insert_dynamic($2, $5, NULL);
}
;
subsystem : ADD template SUBSYSTEM CMDSTRING shared restart
{
int flags = 0;
if ($5)
flags |= SUBSYSTEM_SHARED;
if ($6)
flags |= SUBSYSTEM_RESTART;
$4[strlen($4) - 1] = '\0';
if ($2 != NULL &&
template_subsystem($2, $4+1, flags) == -1)
yyerror("Can not add subsystem \"%s\" to template \"%s\"",
$4+1, $2 != NULL ? $2->name : "<unknown>");
free($4);
}
;
binding : BIND ipaddr template
{
/* Bind to an IP address and start subsystems */
if ($3 == NULL) {
yyerror("Unknown template");
break;
}
if ($3->ethernet_addr != NULL) {
struct interface *inter;
inter = interface_find_responsible(&$2);
if (inter == NULL ||
inter->if_ent.intf_link_addr.addr_type != ADDR_TYPE_ETH) {
yyerror("Template \"%s\" is configured with "
"ethernet address but there is no "
"interface that can reach %s",
$3->name, addr_ntoa(&$2));
break;
}
}
if (template_clone(addr_ntoa(&$2), $3, NULL, 1) == NULL) {
yyerror("Binding to %s failed", addr_ntoa(&$2));
break;
}
}
| BIND condition ipaddr template
{
struct template *tmpl;
/* Special magic */
if ((tmpl = template_find(addr_ntoa(&$3))) != NULL) {
if (!(tmpl->flags & TEMPLATE_DYNAMIC)) {
yyerror("Template \"%s\" already specified as "
"non-dynamic template", addr_ntoa(&$3));
break;
}
} else if ((tmpl = template_create(addr_ntoa(&$3))) == NULL) {
yyerror("Could not create template \"%s\"",
addr_ntoa(&$3));
break;
}
tmpl->flags |= TEMPLATE_DYNAMIC;
/*
* Add this point we do have the right template.
* We just need to add the proper condition.
*/
template_insert_dynamic(tmpl, $4, &$2);
}
| BIND ipaddr TO STRING
{
struct interface *inter;
struct template *tmpl;
/* Bind an IP address to an external interface */
if ((inter = interface_find($4)) == NULL) {
yyerror("Interface \"%s\" does not exist.", $4);
free($4);
break;
}
if (inter->if_ent.intf_link_addr.addr_type != ADDR_TYPE_ETH) {
yyerror("Interface \"%s\" does not support ARP.", $4);
free($4);
break;
}
if ((tmpl = template_create(addr_ntoa(&$2))) == NULL) {
yyerror("Template \"%s\" exists already",
addr_ntoa(&$2));
break;
}
/* Make this template external. */
tmpl->flags |= TEMPLATE_EXTERNAL;
tmpl->inter = inter;
free($4);
}
| DHCP template ON STRING
{
/* Automagically assign DHCP address */
dhcp_template($2, $4, NULL);
free($4);
}
| DHCP template ON STRING ETHERNET CMDSTRING
{
/* Automagically assign DHCP address with MAC address */
$6[strlen($6) - 1] = '\0';
dhcp_template($2, $4, $6 + 1);
free($4);
free($6);
}
| CLONE STRING template
{
/* Just clone. This is not the final destination yet */
if ($3 == NULL || template_clone($2, $3, NULL, 0) == NULL)
yyerror("Cloning to %s failed", $2);
free($2);
}
| SET template SPOOF FROM ipaddr
{
if ($2 == NULL) {
yyerror("No template");
break;
}
$2->spoof.new_src = $5;
}
| SET template SPOOF TO ipaddr
{
if ($2 == NULL) {
yyerror("No template");
break;
}
$2->spoof.new_dst = $5;
}
| SET template SPOOF FROM ipaddr TO ipaddr
{
if ($2 == NULL) {
yyerror("No template");
break;
}
$2->spoof.new_src = $5;
$2->spoof.new_dst = $7;
}
;
set : SET template DEFAULT PROTO ACTION action
{
struct action *action;
if ($2 == NULL) {
yyerror("No template");
break;
}
if ((action = honeyd_protocol($2, $4)) == NULL) {
yyerror("Bad protocol");
break;
}
port_action_clone(action, &$6);
if ($6.action != NULL)
free($6.action);
}
| SET template PERSONALITY personality
{
if ($2 == NULL || $4 == NULL)
break;
$2->person = personality_clone($4);
}
| SET template ETHERNET CMDSTRING
{
extern int need_arp;
if ($2 == NULL || $4 == NULL)
break;
$4[strlen($4) - 1] = '\0';
$2->ethernet_addr = ethernetcode_make_address($4 + 1);
if ($2->ethernet_addr == NULL) {
yyerror("Unknown ethernet vendor \"%s\"", $4 + 1);
}
free ($4);
need_arp = 1;
}
| SET template UPTIME NUMBER
{
if ($2 == NULL || $4 == 0)
break;
$2->timestamp = $4 * 2;
}
| SET template DROPRATE IN rate
{
if ($2 == NULL)
break;
if ($5 > 100) {
yyerror("Droprate too high: %f", $5);
break;
}
$2->drop_inrate = $5 * 100;
}
| SET template DROPRATE SYN rate
{
if ($2 == NULL)
break;
if ($5 > 100) {
yyerror("Droprate too high: %f", $5);
break;
}
$2->drop_synrate = $5 * 100;
}
| SET template MAXFDS NUMBER
{
if ($2 == NULL)
break;
if ($4 <= 3) {
yyerror("Bad number of max file descriptors %d", $4);
break;
}
$2->max_nofiles = $4;
}
| SET template UID NUMBER
{
if ($2 == NULL)
break;
if (!$4) {
yyerror("Bad uid %d", $4);
break;
}
$2->uid = $4;
honeyd_use_uid($4);
}
| SET template UID NUMBER GID NUMBER
{
if ($2 == NULL)
break;
if (!$4 || !$6) {
yyerror("Bad uid %d, gid %d", $4, $6);
break;
}
$2->uid = $4;
$2->gid = $6;
honeyd_use_uid($4);
honeyd_use_gid($6);
}
;
annotate : ANNOTATE personality finscan
{
if ($2 == NULL)
break;
$2->disallow_finscan = !$3;
}
| ANNOTATE personality fragment
{
if ($2 == NULL)
break;
$2->fragp = $3;
}
;
route : ROUTE ENTRY ipaddr
{
if (router_start(&$3, NULL) == -1)
yyerror("Defining entry point failed: %s",
addr_ntoa(&$3));
}
| ROUTE ENTRY ipaddr NETWORK ipnet
{
if (router_start(&$3, &$5) == -1)
yyerror("Defining entry point failed: %s",
addr_ntoa(&$3));
}
| ROUTE ipaddr ADD NET ipnet ipaddr latency packetloss bandwidth randomearlydrop
{
struct router *r, *newr;
struct addr defroute;
if ((r = router_find(&$2)) == NULL &&
(r = router_new(&$2)) == NULL) {
yyerror("Cannot make forward reference for router %s",
addr_ntoa(&$2));
break;
}
if ((newr = router_find(&$6)) == NULL)
newr = router_new(&$6);
if (router_add_net(r, &$5, newr, $7, $8, $9, &$10) == -1)
yyerror("Could not add route to %s", addr_ntoa(&$5));
if ($9 == 0 && $10.high != 0)
yywarn("Ignoring drop between statement without "
"specified bandwidth.");
addr_pton("0.0.0.0/0", &defroute);
defroute.addr_bits = 0; /* work around libdnet bug */
/* Only insert a reverse route, if the current route is
* not the default route.
*/
if (addr_cmp(&defroute, &$5) != 0 &&
router_add_net(newr, &defroute, r, $7, $8, $9, &$10) == -1)
yyerror("Could not add default route to %s",
addr_ntoa(&$5));
}
| ROUTE ipaddr ADD NET ipnet TUNNEL ipaddr ipaddr
{
struct router *r;
if ((r = router_find(&$2)) == NULL &&
(r = router_new(&$2)) == NULL) {
yyerror("Cannot make forward reference for router %s",
addr_ntoa(&$2));
break;
}
if (router_add_tunnel(r, &$5, &$7, &$8) == -1)
yyerror("Could not add tunnel to %s", addr_ntoa(&$8));
}
| ROUTE ipaddr LINK ipnet
{
struct router *r;
if ((r = router_find(&$2)) == NULL &&
(r = router_new(&$2)) == NULL) {
yyerror("Cannot make forward reference for router %s",
addr_ntoa(&$2));
break;
}
if (router_add_link(r, &$4) == -1)
yyerror("Could not add link %s", addr_ntoa(&$4));
}
| ROUTE ipaddr UNREACH ipnet
{
struct router *r;
if ((r = router_find(&$2)) == NULL &&
(r = router_new(&$2)) == NULL) {
yyerror("Cannot make forward reference for router %s",
addr_ntoa(&$2));
break;
}
if (router_add_unreach(r, &$4) == -1)
yyerror("Could not add unreachable net %s",
addr_ntoa(&$4));
}
;
finscan : FINSCAN { $$ = 1; }
| NO FINSCAN { $$ = 0; }
;
fragment : FRAGMENT DROP { $$ = FRAG_DROP; }
| FRAGMENT OLD { $$ = FRAG_OLD; }
| FRAGMENT NEW { $$ = FRAG_NEW; }
;
ipaddr : IPSTRING
{
if (addr_pton($1, &$$) < 0)
yyerror("Illegal IP address %s", $1);
free($1);
}
| CMDSTRING
{
struct addrinfo ai, *aitop;
memset(&ai, 0, sizeof (ai));
ai.ai_family = AF_INET;
ai.ai_socktype = 0;
ai.ai_flags = 0;
/* Remove quotation marks */
$1[strlen($1) - 1] = '\0';
if (getaddrinfo($1+1, NULL, &ai, &aitop) != 0) {
yyerror("getaddrinfo failed: %s", $1+1);
break;
}
addr_ston(aitop->ai_addr, &$$);
freeaddrinfo(aitop);
free($1);
}
;
ipnet : ipaddr SLASH NUMBER
{
char src[25];
struct addr b;
snprintf(src, sizeof(src), "%s/%d",
addr_ntoa(&$1), $3);
if (addr_pton(src, &$$) < 0)
yyerror("Illegal IP network %s", src);
/* Fix libdnet error */
if ($3 == 0)
$$.addr_bits = 0;
/* Test if this is a legal network */
addr_net(&$$, &b);
b.addr_bits = $$.addr_bits;
if (memcmp(&$$.addr_ip, &b.addr_ip, IP_ADDR_LEN)) {
$$ = b;
yywarn("Bad network mask in %s", src);
}
}
;
ipaddrplusport : ipaddr COLON NUMBER
{
if (curtype == -1) {
yyerror("Bad port type");
break;
}
$$ = cmd_proxy_getinfo(addr_ntoa(&$1), curtype, $3);
curtype = -1;
if ($$ == NULL)
yyerror("Illegal IP address port pair");
}
;
action : flags STRING
{
memset(&$$, 0, sizeof($$));
$$.action = $2;
$$.flags = $1;
$$.status = PORT_OPEN;
}
| flags CMDSTRING
{
memset(&$$, 0, sizeof($$));
$2[strlen($2) - 1] = '\0';
if (($$.action = strdup($2 + 1)) == NULL)
yyerror("Out of memory");
$$.status = PORT_OPEN;
$$.flags = $1;
free($2);
}
| flags INTERNAL CMDSTRING
{
#ifdef HAVE_PYTHON
memset(&$$, 0, sizeof($$));
$3[strlen($3) - 1] = '\0';
if (($$.action_extend = pyextend_load_module($3+1)) == NULL)
yyerror("Bad python module: \"%s\"", $3+1);
$$.status = PORT_PYTHON;
$$.flags = $1;
free($3);
#else
yyerror("Python support is not available.");
#endif
}
| flags PROXY ipaddrplusport
{
memset(&$$, 0, sizeof($$));
$$.status = PORT_PROXY;
$$.action = NULL;
$$.aitop = $3;
$$.flags = $1;
}
| flags PROXY STRING COLON NUMBER
{
memset(&$$, 0, sizeof($$));
$$.status = PORT_PROXY;
$$.action = NULL;
$$.aitop = NULL;
$$.flags = $1;
if ($3[0] != '$') {
if (curtype == -1) {
yyerror("Bad port type");
break;
}
$$.aitop = cmd_proxy_getinfo($3, curtype, $5);
curtype = -1;
if ($$.aitop == NULL)
yyerror("Illegal host name in proxy");
} else {
char proxy[1024];
snprintf(proxy, sizeof(proxy), "%s:%d", $3, $5);
$$.action = strdup(proxy);
if ($$.action == NULL)
yyerror("Out of memory");
}
free($3);
}
| flags PROXY STRING COLON STRING
{
char proxy[1024];
memset(&$$, 0, sizeof($$));
$$.status = PORT_PROXY;
$$.action = NULL;
$$.aitop = NULL;
$$.flags = $1;
snprintf(proxy, sizeof(proxy), "%s:%s", $3, $5);
$$.action = strdup(proxy);
if ($$.action == NULL)
yyerror("Out of memory");
free($3);
free($5);
}
| flags PROXY ipaddr COLON STRING
{
char proxy[1024];
memset(&$$, 0, sizeof($$));
$$.status = PORT_PROXY;
$$.action = NULL;
$$.aitop = NULL;
$$.flags = $1;
snprintf(proxy, sizeof(proxy), "%s:%s", addr_ntoa(&$3), $5);
$$.action = strdup(proxy);
if ($$.action == NULL)
yyerror("Out of memory");
free($5);
}
| BLOCK
{
memset(&$$, 0, sizeof($$));
$$.status = PORT_BLOCK;
$$.action = NULL;
}
| RESET
{
memset(&$$, 0, sizeof($$));
$$.status = PORT_RESET;
$$.action = NULL;
}
| flags OPEN
{
memset(&$$, 0, sizeof($$));
$$.status = PORT_OPEN;
$$.action = NULL;
$$.flags = $1;
}
;
template : STRING
{
$$ = template_find($1);
if ($$ == NULL)
yyerror("Unknown template \"%s\"", $1);
free($1);
}
| TEMPLATE
{
$$ = template_find("template");
if ($$ == NULL)
yyerror("Unknown template \"%s\"", "template");
}
| DEFAULT
{
$$ = template_find("default");
if ($$ == NULL)
yyerror("Unknown template \"%s\"", "default");
}
| ipaddr
{
$$ = template_find(addr_ntoa(&$1));
if ($$ == NULL)
yyerror("Unknown template \"%s\"", addr_ntoa(&$1));
}
;
personality : CMDSTRING
{
$1[strlen($1) - 1] = '\0';
$$ = personality_find($1+1);
if ($$ == NULL)
yyerror("Unknown personality \"%s\"", $1+1);
free($1);
}
| RANDOM
{
$$ = personality_random();
if ($$ == NULL)
yyerror("Random personality failed");
}
;
rate : FLOAT
{
$$ = $1;
}
| NUMBER
{
$$ = $1;
}
;
latency : /* empty */ { $$ = 0; }
| LATENCY NUMBER MS
{
$$ = $2;
}
;
packetloss : /* empty */ { $$ = 0; }
| LOSS rate
{
$$ = $2 * 100;
}
;
bandwidth : /* empty */ { $$ = 0; }
| BANDWIDTH NUMBER NUMBER
{
$$ = $2 * $3;
}
| BANDWIDTH NUMBER
{
$$ = $2;
}
;
randomearlydrop : /* empty */ { memset(&$$, 0, sizeof($$)); }
| DROP BETWEEN NUMBER MS DASH NUMBER MS
{
if ($6 <= $3)
yyerror("Incorrect thresholds. First number needs to "
"be smaller than second number.");
$$.low = $3;
$$.high = $6;
}
;
option : OPTION STRING STRING NUMBER
{
struct honeyd_plugin_cfg cfg;
memset(&cfg, 0, sizeof(struct honeyd_plugin_cfg));
cfg.cfg_int = $4;
cfg.cfg_type = HD_CONFIG_INT;
plugins_config_item_add($2, $3, &cfg);
free($2); free($3);
}
| OPTION STRING STRING FLOAT
{
struct honeyd_plugin_cfg cfg;
memset(&cfg, 0, sizeof(struct honeyd_plugin_cfg));
cfg.cfg_flt = $4;
cfg.cfg_type = HD_CONFIG_FLT;
plugins_config_item_add($2, $3, &cfg);
free($2); free($3);
}
| OPTION STRING STRING STRING
{
struct honeyd_plugin_cfg cfg;
memset(&cfg, 0, sizeof(struct honeyd_plugin_cfg));
cfg.cfg_str = $4;
cfg.cfg_type = HD_CONFIG_STR;
plugins_config_item_add($2, $3, &cfg);
free($2); free($3); free($4);
}
/* Make file names work */
| OPTION STRING STRING SLASH STRING
{
struct honeyd_plugin_cfg cfg;
char path[MAXPATHLEN];
snprintf(path, sizeof(path), "/%s", $5);
memset(&cfg, 0, sizeof(struct honeyd_plugin_cfg));
cfg.cfg_str = path;
cfg.cfg_type = HD_CONFIG_STR;
plugins_config_item_add($2, $3, &cfg);
free($2); free($3); free($5);
}
;
ui : LIST TEMPLATE
{
template_list_glob(buffer, "*");
}
| LIST TEMPLATE CMDSTRING
{
$3[strlen($3)-1] = '\0';
template_list_glob(buffer, $3+1);
free ($3);
}
| LIST TEMPLATE STRING
{
template_list_glob(buffer, $3);
}
| LIST SUBSYSTEM
{
template_subsystem_list_glob(buffer, "*");
}
| LIST SUBSYSTEM STRING
{
template_subsystem_list_glob(buffer, $3);
}
| LIST SUBSYSTEM CMDSTRING
{
$3[strlen($3)-1] = '\0';
template_subsystem_list_glob(buffer, $3+1);
free($3);
}
| DEBUG STRING NUMBER
{
if (strcasecmp($2, "fd") == 0) {
yyprintf("%d: %d\n", $3, fdshare_inspect($3));
} else if (strcasecmp($2, "trace") == 0) {
struct evbuffer *evbuf = evbuffer_new();
if (evbuf == NULL)
err(1, "%s: malloc");
trace_inspect($3, evbuf);
yyprintf("%s", EVBUFFER_DATA(evbuf));
evbuffer_free(evbuf);
} else {
yyerror("Unsupported debug command: \"%s\"\n", $2);
}
free($2);
};
shared : /* Empty */
{
$$ = 0;
}
| SHARED
{
$$ = 1;
}
;
restart : /* Empty */
{
$$ = 0;
}
| RESTART
{
$$ = 1;
}
;
flags : /* Empty */
{
$$ = 0;
}
| TARPIT
{
$$ = PORT_TARPIT;
}
;
condition : SOURCE OS EQUAL CMDSTRING
{
pf_osfp_t fp;
$4[strlen($4) - 1] = '\0';
if ((fp = pfctl_get_fingerprint($4+1)) == PF_OSFP_NOMATCH)
yyerror("Unknown fingerprint \"%s\"", $4+1);
if (($$.match_arg = malloc(sizeof(fp))) == NULL)
yyerror("Out of memory");
memcpy($$.match_arg, &fp, sizeof(fp));
$$.match = condition_match_osfp;
$$.match_arglen = sizeof(fp);
free ($4);
}
| SOURCE IP EQUAL ipaddr
{
if (($$.match_arg = malloc(sizeof(struct addr))) == NULL)
yyerror("Out of memory");