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|
%option prefix="fastd_config_yy"
%option noyywrap
%option bison-bridge
%option reentrant
%top {
#include <config.yy.h>
}
%s STRING
%s ADDR6
%s COMMENT
%%
<INITIAL>{
[0-9]+ { yylval->num = atoi(yytext); return TOK_INTEGER; }
interface { return TOK_INTERFACE; }
bind { return TOK_BIND; }
mtu { return TOK_MTU; }
mode { return TOK_MODE; }
protocol { return TOK_PROTOCOL; }
peer { return TOK_PEER; }
address { return TOK_ADDRESS; }
secret { return TOK_SECRET; }
key { return TOK_KEY; }
include { return TOK_INCLUDE; }
as { return TOK_AS; }
any { return TOK_ANY; }
tap { return TOK_TAP; }
tun { return TOK_TUN; }
[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3} {
if (!inet_pton(AF_INET, yytext, &yylval->addr)) {
yylval->str = "invalid address";
return -1;
}
return TOK_ADDR;
}
[;:\{\}] { return yytext[0]; }
[ \t\n] ;
}
<INITIAL>\" BEGIN(STRING);
<STRING>[^"\\]* yymore();
<STRING>\\(.|\n) yymore();
<STRING>\" {
int i, esc = 0;
for (i = 0; i < yyleng; i++) {
if (yytext[i] == '\\')
esc++;
else if(esc)
yytext[i-esc] = yytext[i];
}
yytext[yyleng-esc-1] = 0;
yylval->str = strdup(yytext);
BEGIN(INITIAL);
return TOK_STRING;
}
<INITIAL>\[ BEGIN(ADDR6);
<ADDR6>[^\]]+ {
if (!inet_pton(AF_INET6, yytext, &yylval->addr6)) {
yylval->str = "invalid address";
return -1;
}
return TOK_ADDR6;
}
<ADDR6>\] BEGIN(INITIAL);
<INITIAL>#.* /* ignore */
<INITIAL>\/\/.* /* ignore */
<INITIAL>\/\* BEGIN(COMMENT);
<COMMENT>\*\/ BEGIN(INITIAL);
<COMMENT>.|\n /* ignore everything */
. {
yylval->str = "invalid character";
return -1;
}
<INITIAL><<EOF>> { return 0; }
<COMMENT><<EOF>> { yylval->str = "unterminated block comment"; return -1; }
<STRING><<EOF>> { yylval->str = "unterminated string"; return -1; }
<ADDR6><<EOF>> { yylval->str = "unterminated address"; return -1; }
%%
|
