| 1 |
/* |
| 2 |
* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd). |
| 3 |
* lexer.l: A set of rules for flex. |
| 4 |
* |
| 5 |
* Copyright (C) 2003 by Piotr Nizynski, Advanced IRC Services Project |
| 6 |
* Copyright (C) 2005 by the Hybrid Development Team. |
| 7 |
* |
| 8 |
* This program is free software; you can redistribute it and/or modify |
| 9 |
* it under the terms of the GNU General Public License as published by |
| 10 |
* the Free Software Foundation; either version 2 of the License, or |
| 11 |
* (at your option) any later version. |
| 12 |
* |
| 13 |
* This program is distributed in the hope that it will be useful, |
| 14 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 |
* GNU General Public License for more details. |
| 17 |
* |
| 18 |
* You should have received a copy of the GNU General Public License |
| 19 |
* along with this program; if not, write to the Free Software |
| 20 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
| 21 |
* USA |
| 22 |
* |
| 23 |
* $Id: conf_lexer.l,v 1.5 2003/10/14 16:18:56 adx Exp $ |
| 24 |
*/ |
| 25 |
|
| 26 |
%option case-insensitive |
| 27 |
%option noyywrap |
| 28 |
%option nounput |
| 29 |
%option never-interactive |
| 30 |
|
| 31 |
%x IN_COMMENT |
| 32 |
|
| 33 |
%{ |
| 34 |
|
| 35 |
#include "stdinc.h" |
| 36 |
#include "conf/conf.h" |
| 37 |
#include "parse.h" |
| 38 |
#include "y.tab.h" |
| 39 |
|
| 40 |
#undef YY_INPUT |
| 41 |
#define YY_INPUT(buf, res, siz) res = conf_yy_input(buf, siz) |
| 42 |
/* flex's default is to print a message and exit(0) */ |
| 43 |
#define YY_FATAL_ERROR(msg) conf_yy_fatal_error(msg) |
| 44 |
|
| 45 |
#define MAX_INCLUDE_DEPTH 10 |
| 46 |
|
| 47 |
static int conf_include_sptr = 0; |
| 48 |
static YY_BUFFER_STATE conf_include_yystack[MAX_INCLUDE_DEPTH]; |
| 49 |
struct ConfParserContext conf_include_ctxstack[MAX_INCLUDE_DEPTH]; |
| 50 |
|
| 51 |
static void conf_include(void); |
| 52 |
static int conf_eof(void); |
| 53 |
static int conf_yy_fatal_error(const char *msg) |
| 54 |
{ |
| 55 |
return 0; |
| 56 |
} |
| 57 |
|
| 58 |
%} |
| 59 |
|
| 60 |
WS [ \t]* |
| 61 |
DIGIT [[:digit:]]+ |
| 62 |
INCLUDE \.include{WS}(\<.*\>|\".*\") |
| 63 |
COMMENT ("//"|"#").* |
| 64 |
qstring \"[^\"\n]*[\"\n] |
| 65 |
IDENTIFIER [a-zA-Z_][a-zA-Z0-9_:]* |
| 66 |
|
| 67 |
%% |
| 68 |
|
| 69 |
"/*" { BEGIN IN_COMMENT; } |
| 70 |
<IN_COMMENT>"*/" { BEGIN INITIAL; } |
| 71 |
<IN_COMMENT>. ; /* eat everything but a newline */ |
| 72 |
<IN_COMMENT>\n { ++conf_curctx.lineno; } |
| 73 |
<IN_COMMENT><<EOF>> { BEGIN INITIAL; if (conf_eof()) yyterminate(); } |
| 74 |
|
| 75 |
{INCLUDE} { conf_include(); } |
| 76 |
\n.* { ++conf_curctx.lineno; |
| 77 |
strlcpy(conf_linebuf, yytext + 1, CONF_BUFSIZE); |
| 78 |
yyless(1); |
| 79 |
} |
| 80 |
{WS} ; |
| 81 |
{COMMENT} ; |
| 82 |
{DIGIT} { yylval.number = atoi(yytext); return NUMBER; } |
| 83 |
{qstring} { |
| 84 |
if (yytext[yyleng - 2] == '\\') |
| 85 |
{ |
| 86 |
yyless(yyleng - 1); /* return last quote */ |
| 87 |
yymore(); /* append next string */ |
| 88 |
} |
| 89 |
else |
| 90 |
{ |
| 91 |
yylval.string = yytext + 1; |
| 92 |
|
| 93 |
if (yylval.string[yyleng - 2] != '"') |
| 94 |
ilog(L_ERROR, "Unterminated character string"); |
| 95 |
else |
| 96 |
{ |
| 97 |
int i = 0, j = 0; |
| 98 |
|
| 99 |
yylval.string[yyleng - 2] = '\0'; /* remove close quote */ |
| 100 |
|
| 101 |
for (; yylval.string[i]; ++i, ++j) |
| 102 |
{ |
| 103 |
if (yylval.string[i] == '\\') |
| 104 |
{ |
| 105 |
if (yylval.string[++i] == '\0') |
| 106 |
{ |
| 107 |
ilog(L_ERROR, "Unterminated character string"); |
| 108 |
break; |
| 109 |
} |
| 110 |
} |
| 111 |
|
| 112 |
yylval.string[j] = yylval.string[i]; |
| 113 |
} |
| 114 |
|
| 115 |
yylval.string[j] = '\0'; |
| 116 |
return QSTRING; |
| 117 |
} |
| 118 |
} |
| 119 |
} |
| 120 |
|
| 121 |
b { return BYTES; } |
| 122 |
byte { return BYTES; } |
| 123 |
bytes { return BYTES; } |
| 124 |
d { return DAYS; } |
| 125 |
day { return DAYS; } |
| 126 |
days { return DAYS; } |
| 127 |
false { yylval.number = 0; return BOOL; } |
| 128 |
h { return HOURS; } |
| 129 |
hour { return HOURS; } |
| 130 |
hours { return HOURS; } |
| 131 |
kb { return KBYTES; } |
| 132 |
kbyte { return KBYTES; } |
| 133 |
kbytes { return KBYTES; } |
| 134 |
kilobyte { return KBYTES; } |
| 135 |
kilobytes { return KBYTES; } |
| 136 |
mb { return MBYTES; } |
| 137 |
mbyte { return MBYTES; } |
| 138 |
mbytes { return MBYTES; } |
| 139 |
megabyte { return MBYTES; } |
| 140 |
megabytes { return MBYTES; } |
| 141 |
m { return MINUTES; } |
| 142 |
min { return MINUTES; } |
| 143 |
mins { return MINUTES; } |
| 144 |
minute { return MINUTES; } |
| 145 |
minutes { return MINUTES; } |
| 146 |
no { yylval.number = 0; return BOOL; } |
| 147 |
off { yylval.number = 0; return BOOL; } |
| 148 |
on { yylval.number = 1; return BOOL; } |
| 149 |
s { return SECONDS; } |
| 150 |
sec { return SECONDS; } |
| 151 |
secs { return SECONDS; } |
| 152 |
second { return SECONDS; } |
| 153 |
seconds { return SECONDS; } |
| 154 |
true { yylval.number = 1; return BOOL; } |
| 155 |
w { return WEEKS; } |
| 156 |
week { return WEEKS; } |
| 157 |
weeks { return WEEKS; } |
| 158 |
yes { yylval.number = 1; return BOOL; } |
| 159 |
{IDENTIFIER} { yylval.string = yytext; return IDENTIFIER; } |
| 160 |
. { return yytext[0]; } |
| 161 |
<<EOF>> { if (conf_eof()) yyterminate(); } |
| 162 |
|
| 163 |
%% |
| 164 |
|
| 165 |
/* |
| 166 |
* conf_include() |
| 167 |
* |
| 168 |
* Enters a new configuration file. |
| 169 |
* |
| 170 |
* inputs: none |
| 171 |
* output: none |
| 172 |
*/ |
| 173 |
static void |
| 174 |
conf_include(void) |
| 175 |
{ |
| 176 |
char filenamebuf[IRCD_BUFSIZE]; |
| 177 |
char *fname = NULL; |
| 178 |
FBFILE *f = NULL; |
| 179 |
|
| 180 |
if ((fname = strchr(yytext, '"')) == NULL) |
| 181 |
*strchr(fname = strchr(yytext, '<') + 1, '>') = '\0'; |
| 182 |
else |
| 183 |
*strchr(++fname, '"') = '\0'; |
| 184 |
|
| 185 |
if (conf_include_sptr == MAX_INCLUDE_DEPTH) |
| 186 |
{ |
| 187 |
if (conf_pass == 2) |
| 188 |
parse_error("Includes nested too deep"); |
| 189 |
return; |
| 190 |
} |
| 191 |
|
| 192 |
if (*fname == '/') /* if it is an absolute path */ |
| 193 |
snprintf(filenamebuf, sizeof(filenamebuf), "%s", fname); |
| 194 |
else |
| 195 |
snprintf(filenamebuf, sizeof(filenamebuf), "%s/%s", ETCPATH, fname); |
| 196 |
|
| 197 |
if ((f = fbopen(filenamebuf, "r"))) |
| 198 |
{ |
| 199 |
if (conf_pass == 2) |
| 200 |
parse_error("Unable to read configuration file"); |
| 201 |
return; |
| 202 |
} |
| 203 |
|
| 204 |
/* save current state */ |
| 205 |
memcpy(&conf_include_ctxstack[conf_include_sptr], &conf_curctx, |
| 206 |
sizeof(struct ConfParserContext)); |
| 207 |
conf_include_yystack[conf_include_sptr++] = YY_CURRENT_BUFFER; |
| 208 |
|
| 209 |
/* switch lexer context */ |
| 210 |
conf_linebuf[0] = '\0'; |
| 211 |
|
| 212 |
conf_curctx.lineno = 1; |
| 213 |
conf_curctx.f = f; |
| 214 |
DupString(conf_curctx.filename, filenamebuf); |
| 215 |
|
| 216 |
yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE)); |
| 217 |
} |
| 218 |
|
| 219 |
/* |
| 220 |
* conf_eof() |
| 221 |
* |
| 222 |
* Ends processing of a configuration file. |
| 223 |
* |
| 224 |
* inputs: none |
| 225 |
* output: 1 if the parser should be exited, 0 otherwise |
| 226 |
*/ |
| 227 |
static int |
| 228 |
conf_eof(void) |
| 229 |
{ |
| 230 |
if (conf_include_sptr == 0) |
| 231 |
return 1; |
| 232 |
|
| 233 |
/* destroy current buffer */ |
| 234 |
yy_delete_buffer(YY_CURRENT_BUFFER); |
| 235 |
MyFree(conf_curctx.filename); |
| 236 |
fbclose(conf_curctx.f); |
| 237 |
|
| 238 |
/* restore old context */ |
| 239 |
conf_linebuf[0] = '\0'; |
| 240 |
memcpy(&conf_curctx, &conf_include_ctxstack[--conf_include_sptr], |
| 241 |
sizeof(struct ConfParserContext)); |
| 242 |
yy_switch_to_buffer(conf_include_yystack[conf_include_sptr]); |
| 243 |
|
| 244 |
return 0; |
| 245 |
yy_fatal_error(NULL); /* use it somewhere to avoid the warning */ |
| 246 |
} |
