|
# make new http client (yy025)
# hh2 is an #include in 025.l below
yy018 < ua.txt > hh2;
flex -8iCrfa 025.l;
# cpp -P 025.l|less;
cc -Wall -std=c89 -static -o yy025 lex.yy.c;
save as "025.l":
int yy_get_next_buffer();
int fileno(FILE *);
int setenv (const char *, const char *, int);
int dprintf(int, const char *__restrict, ...);
#define httpMethod "GET"
#define httpVersion "1.1"
#define Host ""
#define jmp BEGIN
#define Y(x,y) fprintf(stdout,x,y)
int count,path,ka;
int httpheaders(){
setenv("httpMethod",httpMethod,0);Y("%s ",getenv("httpMethod"));
Y("%s HTTP/",getenv("Path"));
setenv("httpVersion",httpVersion,0);Y("%s\r\n",getenv("httpVersion"));
#include "hh2"
fputs("\r\n",stdout);
return 0;}
int keepaliveclose(){setenv("Connection","close",1);return 0;}
%option nounput
%s xa xb xc
xa "http://"|"https://"
xb [-A-Za-z0-9.:]*
xc [^#'|<> \r\n]*
%%
^{xa} count++;setenv("Scheme",yytext,0);jmp xa;
<xa>{xb} setenv("Host",yytext,1);if(!getenv("Host"))setenv("Host",Host,0);jmp xb;
<xb>\n path=0;setenv("Path","/",0);httpheaders();jmp 0;
<xb>{xc} path=1;setenv("Path",yytext,1);httpheaders();jmp 0;
.|\n
%%
int main(){input();yylex();if(!getenv("nokac")){if(count>1){keepaliveclose();httpheaders();};}return 0;}
int yywrap(){dprintf(6,"%s",getenv("Host"));return 0;}
|
/int main/{s/input();//;s/return 0/exit(0)/;};/int yywrap/s/return 0/exit(0)/;/%option/s/$/ noinput/