parse.c
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#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <ctype.h>
#include "http/request.h"
#include "http/message.h"
#include "http/request/parser.h"
#include "interface/class.h"
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif
static
inline
char *
getLine(HttpRequestParser this)
{
char * cr = memchr(
this->buffer->buffer + this->buffer->bstart,
'\r',
this->buffer->bused);
char * nl = (NULL == cr)? NULL : cr + 1;
if (NULL != cr && NULL != nl && '\n' == *nl) {
*cr = 0;
return cr;
}
return NULL;
}
static
inline
char
httpRequestSkip(HttpRequestParser this)
{
while (this->buffer->bused > 0 &&
! isalpha(this->buffer->buffer[this->buffer->bstart])) {
this->buffer->bstart = (this->buffer->bstart >= this->buffer->bsize)?
0 : this->buffer->bstart + 1;
this->buffer->bused--;
}
return (isalpha(this->buffer->buffer[this->buffer->bstart]))? TRUE : FALSE;
}
ssize_t
httpRequestParserParse(HttpRequestParser this, int fd)
{
int cont = 1;
ssize_t ret;
if (0 > (ret = rbRead(this->buffer, fd))) {
cont = 0;
}
while (cont) {
switch(this->state) {
char * line_end;
size_t len;
case HTTP_REQUEST_GARBAGE:
if (httpRequestSkip(this)) {
this->cur_request = new(HttpRequest);
this->state = HTTP_REQUEST_START;
}
else {
cont = 0;
}
break;
case HTTP_REQUEST_START:
if (NULL == (line_end = getLine(this))) {
cont = 0;
break;
}
if (0 > httpRequestParserGetRequestLine(this, line_end)) {
ret = -1;
cont = 0;
break;
}
len = line_end - this->buffer->buffer - this->buffer->bstart + 2;
this->buffer->bstart += len;
if (this->buffer->bstart >= this->buffer->bsize) {
this->buffer->bstart -= this->buffer->bsize;
}
this->buffer->bused -= len;
this->state = HTTP_REQUEST_REQUEST_LINE_DONE;
break;
case HTTP_REQUEST_REQUEST_LINE_DONE:
if (NULL == (line_end = getLine(this))) {
cont = 0;
break;
}
if (0 == line_end - this->buffer->buffer - this->buffer->bstart) {
this->buffer->bstart += 2;
if (this->buffer->bstart >= this->buffer->bsize) {
this->buffer->bstart -= this->buffer->bsize;
}
this->buffer->bused -= 2;
this->state = HTTP_REQUEST_HEADERS_DONE;
break;
}
httpRequestParserGetHeader(this, line_end);
len = line_end - this->buffer->buffer - this->buffer->bstart + 2;
this->buffer->bstart += len;
if (this->buffer->bstart >= this->buffer->bsize) {
this->buffer->bstart -= this->buffer->bsize;
}
this->buffer->bused -= len;
break;
case HTTP_REQUEST_HEADERS_DONE:
/**
* allocate memory according to content-length.
* If content length is to large reject request.
*
* @FUTURE check for multipart mime and handle it
* with temporary file.
*/
httpRequestParserGetBody(this);
break;
case HTTP_REQUEST_DONE:
this->request_queue->msgs[(this->request_queue->nmsgs)++] =
(HttpMessage)this->cur_request;
ret = this->request_queue->nmsgs;
this->cur_request = NULL;
this->state = HTTP_REQUEST_GARBAGE;
break;
default:
break;
}
}
return ret;
}
// vim: set ts=4 sw=4: