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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <pthread.h>
#include <dlfcn.h>
#include <math.h>
#include <http.h>
#include <stream.h>
#include <http_parser.h>
#include "http.h"
#include "HTTP_Common.h"
#include "HTTP_Message_Header.h"
extern const char* g_http_method[];
typedef struct host_parser_t
{
char* host_value;
char is_http_flag;
char get_host_flag;
char host_field_flag;
char host_value_flag;
uint32 host_valuelen;
}host_parser;
int http_parser_callback_on_headers_field(struct http_parser * parser, const char * at, size_t length)
{
if(((host_parser*)(parser->data))->get_host_flag==0 || ((host_parser*)(parser->data))->host_field_flag==1) return 0;
if(0==strncasecmp(at, "host",strlen("host")))
{
((host_parser*)(parser->data))->host_field_flag = 1;
}
return 0;
}
int http_parser_callback_on_headers_value(struct http_parser * parser, const char * at, size_t length)
{
if(((host_parser*)(parser->data))->get_host_flag==0 || ((host_parser*)(parser->data))->host_field_flag==0 || ((host_parser*)(parser->data))->host_value_flag==1) return 0;
if(0<length)
{
((host_parser*)(parser->data))->host_value = (char*)malloc(length);
memcpy(((host_parser*)(parser->data))->host_value, at, length);
((host_parser*)(parser->data))->host_valuelen = length;
((host_parser*)(parser->data))->host_value_flag = 1;
}
return 0;
}
int http_parser_callback_on_url(struct http_parser * parser, const char * at, size_t length)
{
((host_parser*)(parser->data))->is_http_flag = 1;
return 0;
}
int http_parser_callback_on_status(struct http_parser * parser, const char * at, size_t length)
{
((host_parser*)(parser->data))->is_http_flag = 1;
return 0;
}
static http_parser_settings http_setting =
{
.on_message_begin = NULL,
.on_url = http_parser_callback_on_url,
.on_status = http_parser_callback_on_status,
.on_header_field = http_parser_callback_on_headers_field,
.on_header_value = http_parser_callback_on_headers_value,
.on_headers_complete = NULL,
.on_body = NULL,
.on_message_complete = NULL,
.on_chunk_header = NULL,
.on_chunk_complete = NULL
};
int http_host_parser(const char* buf, uint32 buflen, int http_dir, char** host)
{
//bufǰ��Ŀո����ɾ������
uint32 offset = 0;
http_deleteEmptyRow(&offset, (char*)(buf), buflen);
const char* pbuf = buf+offset;
uint32 pbuflen = buflen-offset;
char* pbuf_temp = (char*)(buf+offset);
uint32 pbuflen_temp = buflen-offset;
char* new_pbuf = NULL;
uint32 new_pbuflen = 0;
uchar method = HTTP_METHOD_UNKNOWN;
int method_idx = 1;
//printf("buf=====================================================\n");
//printf("%s\n", buf);
// Ϊ�ṹ�������ڴ�
http_parser *parser = (http_parser*)calloc(1, sizeof(http_parser));
host_parser* host_field = (host_parser*)calloc(1, sizeof(host_parser));
int rec = -1;
// ��ʼ��������
if(http_dir==DIR_C2S)
{
http_parser_init(parser, HTTP_REQUEST);
/*�����method�����ƶ�һ���ո���'/',Ҳ����"http://"�����Զ�����һ��'/'*/
if(buflen>HTTP_START_FLAGS_LEN+strlen("http://"))
{
for(method_idx=1;method_idx<=HTTP_METHOD_TRACE;method_idx++)
{
if(0==strncasecmp(pbuf,g_http_method[method_idx],strlen(g_http_method[method_idx])))
{
method = method_idx;
break;
}
}
if(method!=HTTP_METHOD_UNKNOWN)
{
pbuf_temp = pbuf_temp+strlen(g_http_method[method])+strlen(" ");
pbuflen_temp -= strlen(g_http_method[method])+strlen(" ");
if(*pbuf_temp!='/' && 0!=strncasecmp(pbuf_temp, "http://", strlen("http://")))
{
new_pbuflen = pbuflen+strlen("/");
new_pbuf = (char*)malloc(new_pbuflen);
memcpy(new_pbuf, pbuf, pbuflen-pbuflen_temp);
memcpy(new_pbuf+pbuflen-pbuflen_temp, "/", strlen("/"));
memcpy(new_pbuf+pbuflen-pbuflen_temp+strlen("/"), pbuf+pbuflen-pbuflen_temp, pbuflen_temp);
pbuf = new_pbuf;
pbuflen = new_pbuflen;
}
}
}
}
else
{
http_parser_init(parser, HTTP_RESPONSE);
}
parser->data = (void*)host_field;
//��ȡhost����
if(host!=NULL)
{
((host_parser*)(parser->data))->get_host_flag = 1;
}
//ִ�н�������
size_t parsed = http_parser_execute(parser, &http_setting, pbuf, (size_t)pbuflen);
//printf("buflen: %d; parsed: %d\n", pbuflen, parsed);
if(((host_parser*)(parser->data))->is_http_flag == 1)
{
rec = 0;
if(((host_parser*)(parser->data))->get_host_flag == 1)
{
if(0<host_field->host_valuelen)
{
rec = host_field->host_valuelen;
*host = memcasemem(pbuf, pbuflen, (const char*)host_field->host_value, host_field->host_valuelen);
}
}
}
else
{
rec = -1;
}
if(NULL!=host_field)
{
if(NULL!=host_field->host_value)
{
free(host_field->host_value);
host_field->host_value = NULL;
}
free(host_field);
host_field = NULL;
}
if(NULL!=parser)
{
free(parser);
parser = NULL;
}
if(NULL!=new_pbuf)
{
free(new_pbuf);
new_pbuf = NULL;
}
return rec;
}
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