trunk/src/config-lexer.l

/*
 *  Copyright (c) 2002 Erik Fears
 *  Copyright (c) 2014-2017 ircd-hybrid development team
 *
 *  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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
 *  USA
 */

%option case-insensitive
%option noyywrap
%option noinput
%option nounput
%option never-interactive

%x IN_COMMENT

%{
#include <stdio.h>
#include <string.h>

#include "compat.h"
#include "config.h"
#include "config-parser.h"  /* autogenerated header file */
#include "log.h"

/* libopm includes */
#include "libopm/src/opm_types.h"

#undef YY_FATAL_ERROR
#define YY_FATAL_ERROR(msg) conf_yy_fatal_error(msg)

#undef YY_INPUT
#define YY_INPUT(buf,result,max_size) \
  if (!(result = conf_yy_input(buf, max_size))) \
    YY_FATAL_ERROR("input in flex scanner failed");
#define MAX_INCLUDE_DEPTH 10


unsigned int lineno = 1;
char linebuf[512];
char conffilebuf[512];

static struct included_file
{
  YY_BUFFER_STATE state;
  unsigned int lineno;
  FILE *file;
  char conffile[512];
} include_stack[MAX_INCLUDE_DEPTH];

static unsigned int include_stack_ptr;


static void conf_include(void);
static int conf_eof(void);

static int
conf_yy_input(char *lbuf, unsigned int max_size)
{
  return fgets(lbuf, max_size, conf_file) == NULL ? 0 : strlen(lbuf);
}

static int
conf_yy_fatal_error(const char *msg)
{
  return 0;
}
%}

WS        [[:blank:]]*
DIGIT     [[:digit:]]+
COMMENT   ("//"|"#").*
qstring   \"[^\"\n]*[\"\n]
include   \.include{WS}(\<.*\>|\".*\")

%%

"/*"                { BEGIN IN_COMMENT; }
<IN_COMMENT>"*/"    { BEGIN INITIAL;    }
<IN_COMMENT>.       ;  /* Eat everything but a newline */
<IN_COMMENT>\n      { ++lineno; }
<IN_COMMENT><<EOF>> { BEGIN INITIAL; if (conf_eof()) yyterminate(); }

{include}       { conf_include(); }
\n.*            { strlcpy(linebuf, yytext + 1, sizeof(linebuf)); ++lineno; yyless(1); }
{WS}            ;
{COMMENT}       ;
{DIGIT}         { yylval.number = atoi(yytext); return NUMBER; }
{qstring}       { if (yytext[yyleng - 2] == '\\')
                  {
                    yyless(yyleng - 1);  /* Return last quote */
                    yymore();  /* Append next string */
                  }
                  else
                  {
                    yylval.string = yytext + 1;

                    if (yylval.string[yyleng - 2] != '"')
                      log_printf("CONFIG ->Unterminated character string");
                    else
                    {
                      unsigned int i = 0, j = 0;

                      yylval.string[yyleng - 2] = '\0';  /* Remove close quote */

                      for (; yylval.string[i] != '\0'; ++i, ++j)
                      {
                        if (yylval.string[i] != '\\')
                          yylval.string[j] = yylval.string[i];
                        else
                        {
                          ++i;

                          if (yylval.string[i] == '\0')  /* XXX: should not happen */
                          {
                            log_printf("CONFIG -> Unterminated character string");
                            break;
                          }

                          yylval.string[j] = yylval.string[i];
                        }
                      }

                      yylval.string[j] = '\0';
                      return STRING;
                    }
                  }
                }

ADDRESS_FAMILY          { return ADDRESS_FAMILY; }
AWAY                    { return AWAY;         }
BAN_UNKNOWN             { return BAN_UNKNOWN;  }
BLACKLIST               { return BLACKLIST;    }
CHANNEL                 { return CHANNEL;      }
COMMAND_INTERVAL        { return COMMAND_INTERVAL; }
COMMAND_QUEUE_SIZE      { return COMMAND_QUEUE_SIZE; }
COMMAND_TIMEOUT         { return COMMAND_TIMEOUT; }
CONNREGEX               { return CONNREGEX;    }
DNS_FDLIMIT             { return DNS_FDLIMIT;  }
DNS_TIMEOUT             { return DNS_TIMEOUT;  }
DNSBL_FROM              { return DNSBL_FROM;   }
DNSBL_TO                { return DNSBL_TO;     }
EXEMPT                  { return EXEMPT;       }
FD                      { return FD;           }
INVITE                  { return INVITE;       }
IPV4                    { return IPV4;         }
IPV6                    { return IPV6;         }
IRC                     { return IRC;          }
KLINE                   { return KLINE;        }
KEY                     { return KEY;          }
MASK                    { return MASK;         }
MAX_READ                { return MAX_READ;     }
MODE                    { return MODE;         }
NAME                    { return NAME;         }
NEGCACHE                { return NEGCACHE;     }
NEGCACHE_REBUILD        { return NEGCACHE_REBUILD; }
NICK                    { return NICK;         }
NICKSERV                { return NICKSERV;     }
NOTICE                  { return NOTICE;       }
OPER                    { return OPER;         }
OPM                     { return OPM;          }
OPTIONS                 { return OPTIONS;      }
PASSWORD                { return PASSWORD;     }
PERFORM                 { return PERFORM;      }
PIDFILE                 { return PIDFILE;      }
PORT                    { return PORT;         }
PROTOCOL                { return PROTOCOL;     }
READTIMEOUT             { return READTIMEOUT;  }
REALNAME                { return REALNAME;     }
RECONNECTINTERVAL       { return RECONNECTINTERVAL; }
REPLY                   { return REPLY;        }
SCANLOG                 { return SCANLOG;      }
SCANNER                 { return SCANNER;      }
SENDMAIL                { return SENDMAIL;     }
SERVER                  { return SERVER;       }
TARGET_IP               { return TARGET_IP;    }
TARGET_PORT             { return TARGET_PORT;  }
TARGET_STRING           { return TARGET_STRING;}
TIMEOUT                 { return TIMEOUT;      }
TYPE                    { return TYPE;         }
USER                    { return USER;         }
USERNAME                { return USERNAME;     }
VHOST                   { return VHOST;        }

years                   { return YEARS; }
year                    { return YEARS; }
months                  { return MONTHS; }
month                   { return MONTHS; }
weeks                   { return WEEKS; }
week                    { return WEEKS; }
days                    { return DAYS; }
day                     { return DAYS; }
hours                   { return HOURS; }
hour                    { return HOURS; }
minutes                 { return MINUTES; }
minute                  { return MINUTES; }
seconds                 { return SECONDS; }
second                  { return SECONDS; }

bytes                   { return BYTES; }
byte                    { return BYTES; }
kilobytes               { return KBYTES; }
kilobyte                { return KBYTES; }
kbytes                  { return KBYTES; }
kbyte                   { return KBYTES; }
kb                      { return KBYTES; }
megabytes               { return MBYTES; }
megabyte                { return MBYTES; }
mbytes                  { return MBYTES; }
mbyte                   { return MBYTES; }
mb                      { return MBYTES; }

HTTP                    {
                          yylval.number = OPM_TYPE_HTTP;
                          return PROTOCOLTYPE;
                        }

HTTPPOST                {
                          yylval.number = OPM_TYPE_HTTPPOST;
                          return PROTOCOLTYPE;
                        }

HTTPS                   {
                          yylval.number = OPM_TYPE_HTTPS;
                          return PROTOCOLTYPE;
                        }

HTTPSPOST               {
                          yylval.number = OPM_TYPE_HTTPSPOST;
                          return PROTOCOLTYPE;
                        }

SOCKS4                  {
                          yylval.number = OPM_TYPE_SOCKS4;
                          return PROTOCOLTYPE;
                        }

SOCKS5                  {
                          yylval.number = OPM_TYPE_SOCKS5;
                          return PROTOCOLTYPE;
                        }

WINGATE                 {
                          yylval.number = OPM_TYPE_WINGATE;
                          return PROTOCOLTYPE;
                        }

ROUTER                  {
                          yylval.number = OPM_TYPE_ROUTER;
                          return PROTOCOLTYPE;
                        }

DREAMBOX                {
                          yylval.number = OPM_TYPE_DREAMBOX;
                          return PROTOCOLTYPE;
                        }


TRUE                     {
                           yylval.number=1;
                           return NUMBER;
                         }
YES                      {
                           yylval.number=1;
                           return NUMBER;
                         }
ON                       {
                           yylval.number=1;
                           return NUMBER;
                         }


FALSE                    {
                           yylval.number=0;
                           return NUMBER;
                         }

NO                       {
                           yylval.number=0;
                           return NUMBER;
                         }

OFF                      {
                           yylval.number=0;
                           return NUMBER;
                         }

.                       { return yytext[0]; }
<<EOF>>                 { if (conf_eof()) yyterminate(); }

%%

static void
conf_include(void)
{
  char *p = NULL;
  char filenamebuf[512];

  if ((p = strchr(yytext, '<')) == NULL)
    *strchr(p = strchr(yytext, '"') + 1, '"') = '\0';
  else
    *strchr(++p, '>') = '\0';

  /* do stacking and co. */
  if (include_stack_ptr >= MAX_INCLUDE_DEPTH)
  {
    log_printf("CONFIG -> Includes nested too deep in %s", p);
    return;
  }

  if (*p == '/')  /* if it is an absolute path */
    snprintf(filenamebuf, sizeof(filenamebuf), "%s", p);
  else
    snprintf(filenamebuf, sizeof(filenamebuf), "%s/%s", HOPM_ETCDIR, p);

  FILE *tmp_fbfile_in = fopen(filenamebuf, "r");
  if (!tmp_fbfile_in)
  {
    log_printf("CONFIG -> Unable to read configuration file '%s': %s",
               filenamebuf, strerror(errno));
    return;
  }

  struct included_file *file = &include_stack[include_stack_ptr++];
  file->lineno = lineno;
  file->file = conf_file;
  file->state = YY_CURRENT_BUFFER;
  strlcpy(file->conffile, conffilebuf, sizeof(file->conffile));

  lineno = 1;
  conf_file = tmp_fbfile_in;
  strlcpy(conffilebuf, filenamebuf, sizeof(conffilebuf));

  yy_switch_to_buffer(yy_create_buffer(NULL, YY_BUF_SIZE));
}

static int
conf_eof(void)
{
  if (include_stack_ptr == 0)
    return 1;

  /* switch buffer */
  struct included_file *file = &include_stack[--include_stack_ptr];

  /* close current file */
  fclose(conf_file);

  /* switch buffers */
  yy_delete_buffer(YY_CURRENT_BUFFER);
  yy_switch_to_buffer(file->state);

  /* switch lineno */
  lineno = file->lineno;

  /* switch file */
  conf_file = file->file;

  strlcpy(conffilebuf, file->conffile, sizeof(conffilebuf));
  return 0;
}
Revision:	8174
Committed:	Thu Apr 13 14:45:05 2017 UTC (9 years, 3 months ago) by michael
File size:	11804 byte(s)
Log Message:	- config.h: move opm_types.h header include to config-lexer.l
#	User	Rev	Content
1	michael	5052	/*
2	michael	5351	* Copyright (c) 2002 Erik Fears
3	michael	7927	* Copyright (c) 2014-2017 ircd-hybrid development team
4	michael	5052	*
5	michael	5351	* This program is free software; you can redistribute it and/or modify
6			* it under the terms of the GNU General Public License as published by
7			* the Free Software Foundation; either version 2 of the License, or
8			* (at your option) any later version.
9	michael	5052	*
10	michael	5351	* This program is distributed in the hope that it will be useful,
11			* but WITHOUT ANY WARRANTY; without even the implied warranty of
12			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13			* GNU General Public License for more details.
14	michael	5052	*
15	michael	5351	* You should have received a copy of the GNU General Public License
16			* along with this program; if not, write to the Free Software
17			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
18			* USA
19	michael	5052	*/
20
21			%option case-insensitive
22			%option noyywrap
23	michael	7750	%option noinput
24	michael	5052	%option nounput
25	michael	5687	%option never-interactive
26	michael	5052
27	michael	7748	%x IN_COMMENT
28
29	michael	5052	%{
30			#include <stdio.h>
31			#include <string.h>
32	michael	5078
33			#include "compat.h"
34	michael	5052	#include "config.h"
35	michael	7711	#include "config-parser.h" /* autogenerated header file */
36			#include "log.h"
37	michael	5052
38	michael	8174	/* libopm includes */
39			#include "libopm/src/opm_types.h"
40
41	michael	7719	#undef YY_FATAL_ERROR
42			#define YY_FATAL_ERROR(msg) conf_yy_fatal_error(msg)
43	michael	5052
44	michael	7711	#undef YY_INPUT
45			#define YY_INPUT(buf,result,max_size) \
46			if (!(result = conf_yy_input(buf, max_size))) \
47			YY_FATAL_ERROR("input in flex scanner failed");
48			#define MAX_INCLUDE_DEPTH 10
49	michael	5052
50	michael	7711
51			unsigned int lineno = 1;
52	michael	5052	char linebuf[512];
53	michael	7711	char conffilebuf[512];
54	michael	5052
55	michael	7711	static struct included_file
56			{
57			YY_BUFFER_STATE state;
58			unsigned int lineno;
59			FILE *file;
60			char conffile[512];
61			} include_stack[MAX_INCLUDE_DEPTH];
62
63			static unsigned int include_stack_ptr;
64
65
66			static void conf_include(void);
67			static int conf_eof(void);
68
69			static int
70			conf_yy_input(char *lbuf, unsigned int max_size)
71			{
72	michael	7719	return fgets(lbuf, max_size, conf_file) == NULL ? 0 : strlen(lbuf);
73	michael	7711	}
74
75	michael	7719	static int
76			conf_yy_fatal_error(const char *msg)
77			{
78			return 0;
79			}
80	michael	5052	%}
81
82	michael	7716	WS [[:blank:]]*
83			DIGIT [[:digit:]]+
84			COMMENT ("//"\|"#").*
85			qstring \"[^\"\n]*[\"\n]
86			include \.include{WS}(\<.\>\|\".\")
87	michael	5052
88			%%
89	michael	7748
90			"/*" { BEGIN IN_COMMENT; }
91			<IN_COMMENT>"*/" { BEGIN INITIAL; }
92			<IN_COMMENT>. ; /* Eat everything but a newline */
93			<IN_COMMENT>\n { ++lineno; }
94			<IN_COMMENT><<EOF>> { BEGIN INITIAL; if (conf_eof()) yyterminate(); }
95
96	michael	7716	{include} { conf_include(); }
97			\n.* { strlcpy(linebuf, yytext + 1, sizeof(linebuf)); ++lineno; yyless(1); }
98			{WS} ;
99			{COMMENT} ;
100			{DIGIT} { yylval.number = atoi(yytext); return NUMBER; }
101			{qstring} { if (yytext[yyleng - 2] == '\\')
102			{
103			yyless(yyleng - 1); /* Return last quote */
104			yymore(); /* Append next string */
105			}
106			else
107			{
108			yylval.string = yytext + 1;
109	michael	5052
110	michael	7716	if (yylval.string[yyleng - 2] != '"')
111			log_printf("CONFIG ->Unterminated character string");
112			else
113			{
114			unsigned int i = 0, j = 0;
115	michael	5052
116	michael	7716	yylval.string[yyleng - 2] = '\0'; /* Remove close quote */
117	michael	5052
118	michael	7716	for (; yylval.string[i] != '\0'; ++i, ++j)
119			{
120			if (yylval.string[i] != '\\')
121			yylval.string[j] = yylval.string[i];
122			else
123			{
124			++i;
125	michael	5052
126	michael	7716	if (yylval.string[i] == '\0') /* XXX: should not happen */
127			{
128			log_printf("CONFIG -> Unterminated character string");
129			break;
130			}
131	michael	5052
132	michael	7716	yylval.string[j] = yylval.string[i];
133	michael	5052	}
134	michael	7716	}
135	michael	5052
136	michael	7716	yylval.string[j] = '\0';
137			return STRING;
138			}
139			}
140			}
141
142	michael	8098	ADDRESS_FAMILY { return ADDRESS_FAMILY; }
143	michael	5052	AWAY { return AWAY; }
144			BAN_UNKNOWN { return BAN_UNKNOWN; }
145			BLACKLIST { return BLACKLIST; }
146			CHANNEL { return CHANNEL; }
147	michael	7014	COMMAND_INTERVAL { return COMMAND_INTERVAL; }
148			COMMAND_QUEUE_SIZE { return COMMAND_QUEUE_SIZE; }
149			COMMAND_TIMEOUT { return COMMAND_TIMEOUT; }
150	michael	5052	CONNREGEX { return CONNREGEX; }
151			DNS_FDLIMIT { return DNS_FDLIMIT; }
152	michael	6200	DNS_TIMEOUT { return DNS_TIMEOUT; }
153	michael	5052	DNSBL_FROM { return DNSBL_FROM; }
154			DNSBL_TO { return DNSBL_TO; }
155			EXEMPT { return EXEMPT; }
156			FD { return FD; }
157			INVITE { return INVITE; }
158	michael	8098	IPV4 { return IPV4; }
159			IPV6 { return IPV6; }
160	michael	5052	IRC { return IRC; }
161			KLINE { return KLINE; }
162			KEY { return KEY; }
163			MASK { return MASK; }
164			MAX_READ { return MAX_READ; }
165			MODE { return MODE; }
166			NAME { return NAME; }
167			NEGCACHE { return NEGCACHE; }
168	michael	5332	NEGCACHE_REBUILD { return NEGCACHE_REBUILD; }
169	michael	5052	NICK { return NICK; }
170			NICKSERV { return NICKSERV; }
171	michael	5405	NOTICE { return NOTICE; }
172	michael	5052	OPER { return OPER; }
173			OPM { return OPM; }
174			OPTIONS { return OPTIONS; }
175			PASSWORD { return PASSWORD; }
176			PERFORM { return PERFORM; }
177			PIDFILE { return PIDFILE; }
178			PORT { return PORT; }
179			PROTOCOL { return PROTOCOL; }
180	michael	5198	READTIMEOUT { return READTIMEOUT; }
181	michael	5052	REALNAME { return REALNAME; }
182	michael	6078	RECONNECTINTERVAL { return RECONNECTINTERVAL; }
183	michael	5052	REPLY { return REPLY; }
184			SCANLOG { return SCANLOG; }
185			SCANNER { return SCANNER; }
186			SENDMAIL { return SENDMAIL; }
187			SERVER { return SERVER; }
188			TARGET_IP { return TARGET_IP; }
189			TARGET_PORT { return TARGET_PORT; }
190			TARGET_STRING { return TARGET_STRING;}
191			TIMEOUT { return TIMEOUT; }
192			TYPE { return TYPE; }
193			USER { return USER; }
194			USERNAME { return USERNAME; }
195			VHOST { return VHOST; }
196
197	michael	5080	years { return YEARS; }
198			year { return YEARS; }
199			months { return MONTHS; }
200			month { return MONTHS; }
201			weeks { return WEEKS; }
202			week { return WEEKS; }
203			days { return DAYS; }
204			day { return DAYS; }
205			hours { return HOURS; }
206			hour { return HOURS; }
207			minutes { return MINUTES; }
208			minute { return MINUTES; }
209			seconds { return SECONDS; }
210			second { return SECONDS; }
211	michael	5052
212	michael	5080	bytes { return BYTES; }
213			byte { return BYTES; }
214			kilobytes { return KBYTES; }
215			kilobyte { return KBYTES; }
216			kbytes { return KBYTES; }
217			kbyte { return KBYTES; }
218			kb { return KBYTES; }
219			megabytes { return MBYTES; }
220			megabyte { return MBYTES; }
221			mbytes { return MBYTES; }
222			mbyte { return MBYTES; }
223			mb { return MBYTES; }
224
225	michael	5052	HTTP {
226			yylval.number = OPM_TYPE_HTTP;
227			return PROTOCOLTYPE;
228			}
229
230			HTTPPOST {
231			yylval.number = OPM_TYPE_HTTPPOST;
232			return PROTOCOLTYPE;
233			}
234
235	michael	6222	HTTPS {
236			yylval.number = OPM_TYPE_HTTPS;
237			return PROTOCOLTYPE;
238			}
239
240			HTTPSPOST {
241			yylval.number = OPM_TYPE_HTTPSPOST;
242			return PROTOCOLTYPE;
243			}
244
245	michael	5052	SOCKS4 {
246			yylval.number = OPM_TYPE_SOCKS4;
247			return PROTOCOLTYPE;
248			}
249
250			SOCKS5 {
251			yylval.number = OPM_TYPE_SOCKS5;
252			return PROTOCOLTYPE;
253			}
254
255			WINGATE {
256			yylval.number = OPM_TYPE_WINGATE;
257			return PROTOCOLTYPE;
258			}
259
260			ROUTER {
261			yylval.number = OPM_TYPE_ROUTER;
262			return PROTOCOLTYPE;
263			}
264
265	michael	5998	DREAMBOX {
266			yylval.number = OPM_TYPE_DREAMBOX;
267			return PROTOCOLTYPE;
268			}
269	michael	5052
270	michael	5998
271	michael	5052	TRUE {
272			yylval.number=1;
273			return NUMBER;
274			}
275			YES {
276			yylval.number=1;
277			return NUMBER;
278			}
279			ON {
280			yylval.number=1;
281			return NUMBER;
282			}
283
284
285
286			FALSE {
287			yylval.number=0;
288			return NUMBER;
289			}
290
291			NO {
292			yylval.number=0;
293			return NUMBER;
294			}
295
296			OFF {
297			yylval.number=0;
298			return NUMBER;
299			}
300
301	michael	7716	. { return yytext[0]; }
302	michael	7711	<<EOF>> { if (conf_eof()) yyterminate(); }
303	michael	5052
304			%%
305
306	michael	6046	static void
307	michael	7711	conf_include(void)
308			{
309			char *p = NULL;
310			char filenamebuf[512];
311
312			if ((p = strchr(yytext, '<')) == NULL)
313			*strchr(p = strchr(yytext, '"') + 1, '"') = '\0';
314			else
315			*strchr(++p, '>') = '\0';
316
317			/* do stacking and co. */
318			if (include_stack_ptr >= MAX_INCLUDE_DEPTH)
319			{
320			log_printf("CONFIG -> Includes nested too deep in %s", p);
321			return;
322			}
323
324			if (p == '/') / if it is an absolute path */
325			snprintf(filenamebuf, sizeof(filenamebuf), "%s", p);
326			else
327			snprintf(filenamebuf, sizeof(filenamebuf), "%s/%s", HOPM_ETCDIR, p);
328
329			FILE *tmp_fbfile_in = fopen(filenamebuf, "r");
330			if (!tmp_fbfile_in)
331			{
332			log_printf("CONFIG -> Unable to read configuration file '%s': %s",
333			filenamebuf, strerror(errno));
334			return;
335			}
336
337			struct included_file *file = &include_stack[include_stack_ptr++];
338			file->lineno = lineno;
339			file->file = conf_file;
340			file->state = YY_CURRENT_BUFFER;
341			strlcpy(file->conffile, conffilebuf, sizeof(file->conffile));
342
343			lineno = 1;
344			conf_file = tmp_fbfile_in;
345	michael	7742	strlcpy(conffilebuf, filenamebuf, sizeof(conffilebuf));
346	michael	7711
347	michael	7729	yy_switch_to_buffer(yy_create_buffer(NULL, YY_BUF_SIZE));
348	michael	7711	}
349
350			static int
351			conf_eof(void)
352			{
353			if (include_stack_ptr == 0)
354			return 1;
355
356			/* switch buffer */
357			struct included_file *file = &include_stack[--include_stack_ptr];
358
359			/* close current file */
360			fclose(conf_file);
361
362			/* switch buffers */
363			yy_delete_buffer(YY_CURRENT_BUFFER);
364			yy_switch_to_buffer(file->state);
365
366			/* switch lineno */
367			lineno = file->lineno;
368
369			/* switch file */
370			conf_file = file->file;
371
372			strlcpy(conffilebuf, file->conffile, sizeof(conffilebuf));
373			return 0;
374			}