char getChar (int fd)
{
int n;
char c;
char *info;
n = read (fd, &c, 1);
switch (n){
case -1:
info = "fail to read the socket\n";
write (1, info, strlen (info));
Http_print (fd, http400);
close (fd);
exit (0);
break;
case 0: // socket is blocked
info = "read 0 char\n";
write (1, info, strlen (info));
Http_print (fd, http400);
close (fd);
exit (0);
break;
case 1:
break;
default:
info = "server bug\n";
write (1, info, strlen (info));
Http_print (fd, http400);
close (fd);
exit (0);
break;
}
return c;
}
void parseError(int fd)
{
//eatAllChars(fd);
Http_print (fd, http400);
close (fd);
exit (0);
}
void *Parse_parse (int fd, int reqOnly)
{
http400 = generate400();
//getToken(fd, 1); modify
ReqLine_t reqline;
Http_t http = 0;
if(reqOnly){
reqline = Parse_reqLine (fd);
return reqline;
}
parseHeaders(fd);
if (token.kind!=TOKEN_CRLF)
parseError(fd);
int num = parseBody(fd);
reqline = gReqline;
http = Http_new (HTTP_KIND_REQUEST
, reqline
, 0
, 0
, 0);
if (DEBUG)
Http_print (1, http);
return http;
}
Http_t Parse_parse (int fd)
{
http400 = generate400();
getToken(fd, 1);
ReqLine_t reqline;
Http_t http = 0;
reqline = parseRequestLine (fd);
parseHeaders(fd);
if (token.kind!=TOKEN_CRLF)
parseError(fd);
parseBody(fd);
http = Http_new (HTTP_KIND_REQUEST
, reqline
, 0
, 0
, 0);
if (DEBUG)
Http_print (1, http);
return http;
}
void getToken (int fd, int sepBySpace)
{
i = 0;
char s[1024];
gfd = fd;
switch (ahead){
case A_NONE:
c = getChar (gfd);
break;
case A_SPACE:
ahead = A_NONE;
Token_new(token, TOKEN_SPACE, 0);
return;
case A_CRLF:
ahead = A_NONE;
Token_new(token, TOKEN_CRLF, 0);
return;
default:{
char *info = "server bug";
write (1, info, strlen (info));
Http_print (gfd, http400);
close (gfd);
exit (0);
return;
}
}
while (1){
switch (c){
case ' ':
if (sepBySpace){
if (i){
char *p;
int kind;
// remember the ' '
ahead = A_SPACE;
s[i] = '\0';
p = malloc (strlen(s)+1);
strcpy (p, s);
kind = Token_getKeyWord (p);
if (kind>=0){
Token_new (token, kind, 0);
return;
}
Token_new (token, TOKEN_STR, p);
return;
}
Token_new(token, TOKEN_SPACE, 0);
return;
}
s[i++] = c;
break;
case '\r':{
char c2;
c2 = getChar (gfd);
if (c2=='\n'){
if (i){
char *p;
int kind;
// remember the ' '
ahead = A_CRLF;
s[i] = '\0';
p = malloc (strlen(s)+1);
strcpy (p, s);
kind = Token_getKeyWord (p);
if (kind>=0){
Token_new (token, kind, 0);
return;
}
Token_new (token, TOKEN_STR, p);
return;
}
Token_new(token, TOKEN_CRLF, 0);
return;
}
s[i++] = c;
s[i++] = c2;
break;
}
default:
s[i++] = c;
break;
}
c = getChar (gfd);
}
return;
}
