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http_request_parse.c
266 lines (216 loc) · 4.63 KB
/
http_request_parse.c
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#include <string.h>
#include <stdio.h>
#include "http_request_r.h"
#include "http_request_parse.h"
#include "math/math.h"
int http_request_parse(struct http_request_r *r,char p[1024])
{
int n,i,header_length=0;
char ch;
strcat(r->buf,p);
n = strlen(r->buf);
r->buf_size = n;
for(i=0;i<n;i++)
{
ch = r->buf[i];
//printf("%02x ",ch);
if(ch=='\r' && n>i+3)
{
if(r->buf[i+1]=='\n' && r->buf[i+2]=='\r' && r->buf[i+3]=='\n')
{
header_length = i+4;
break;
}
}
}
if(header_length>0)
{
//parse header
r->content_pos = header_length;
http_request_header_parse(r);
if(r->content_length==n-header_length)
{
r->is_end = 1;
}
if(r->is_end==1)
{
http_request_line_parse(r);
http_request_ext_path(r);
http_request_header_fields_parse(r);
}
}
return 0;
}
int http_request_header_parse(struct http_request_r *r)
{
int i,j,n,m=0,l,k,content_len;
char ch;
char *content_length = "Content-Length";
char content_len_str[12];
memset(content_len_str,0,12);
n = strlen(r->buf);
for(i=0;i<n;i++)
{
ch = r->buf[i];
if(ch=='\r' && r->buf[i+1]=='\n')
{
m=0;
for(j=0;j<strlen(content_length);j++)
{
if(r->buf[i+2+j]==content_length[j])
{
m++;
}
}
if(m==strlen(content_length))
{
for(j=i+1+m;j<n;j++)
{
if(r->buf[j]=='\r' && r->buf[j+1]=='\n')
{
l = j;
break;
}
}
k=0;
for(j=i+1+m;j<l;j++)
{
if(r->buf[j]>='0' && r->buf[j]<='9')
{
content_len_str[k]=r->buf[j];
k++;
}
}
break;
}
}
}
content_len = chtoint(content_len_str);
r->content_length = content_len;
return 1;
}
int http_request_line_parse(struct http_request_r *r)
{
int i,n,k,m;
n = strlen(r->buf);
k = 0;
int pos[3]={0};
for(i=0;i<n;i++)
{
if(r->buf[i]==' ')
{
pos[k]=i;
k++;
}
if(r->buf[i]=='\r' && r->buf[i+1]=='\n')
{
pos[k]=i;
break;
}
}
r->method = (char *)malloc(12);
memset(r->method,0,12);
cstrcpy(r->method,r->buf,0,pos[0]);
r->request_uri = (char *)malloc(128);
memset(r->request_uri,0,128);
cstrcpy(r->request_uri,r->buf,pos[0]+1,pos[1]-pos[0]-1);
r->protocol = (char *)malloc(12);
memset(r->protocol,0,12);
cstrcpy(r->protocol,r->buf,pos[1]+1,pos[2]-pos[1]-1);
r->request_header_fields_pos = pos[2]+2;
}
int http_request_header_fields_parse(struct http_request_r *r)
{
int i,m;
int request_header_fields_length;
int crlf_pos[100]={0};
int colon_pos[100]={0};
struct http_request_fields *f[100],*p;
m=0;
for(i=r->request_header_fields_pos;i<r->content_pos;i++)
{
if(r->buf[i]==':')
{
colon_pos[m]=i;
}
if(r->buf[i]=='\r' && r->buf[i+1]=='\n')
{
crlf_pos[m]=i;
m++;
}
if(r->buf[i]=='\r' && r->buf[i+1]=='\n' && r->buf[i+2]=='\r' && r->buf[i+3]=='\n')
{
break;
}
}
for(i=0;i<m;i++)
{
if(1)
{
f[i] = (struct http_request_fields *)malloc(sizeof(struct http_request_fields));
memset(f[i],0,sizeof(struct http_request_fields));
f[i]->key = (char *)malloc(128);
memset(f[i]->key,0,128);
f[i]->val = (char *)malloc(128);
memset(f[i]->val,0,128);
if(i==0){
cstrcpy(f[i]->key,r->buf,r->request_header_fields_pos,colon_pos[i]-r->request_header_fields_pos);
}else{
cstrcpy(f[i]->key,r->buf,crlf_pos[i-1]+2,colon_pos[i]-(crlf_pos[i-1]+2));
}
cstrcpy(f[i]->val,r->buf,colon_pos[i]+1,crlf_pos[i]-colon_pos[i]);
// printf("%s:%s\n",f[i]->key,f[i]->val);
}
}
}
int http_request_ext_path(struct http_request_r *r)
{
int i=0,n=0,period_pos=0,query_pos=0,file_end_pos=0;
char ch;
r->path = (char *)malloc(100);
memset(r->path,0,100);
r->ext = (char *)malloc(10);
memset(r->ext,0,10);
n = strlen(r->request_uri);
for(i=0;i<n;i++)
{
ch = r->request_uri[i];
if(ch=='.')
{
period_pos=i;
}
if(ch=='?')
{
query_pos=i;
break;
}
}
strcpy(r->path,"/data/tests/web/");
if(query_pos>0)
{
file_end_pos = query_pos-1;
}
else
{
file_end_pos = n;
}
if(file_end_pos<2)
{
strcpy(r->path+strlen(r->path),"index.html");
printf("%s\n",r->path);
strcpy(r->ext,"html");
}
else
{
strncpy(r->path+strlen(r->path),r->request_uri,file_end_pos);
if(period_pos>0)
{
cstrcpy(r->ext,r->request_uri,period_pos+1,file_end_pos-period_pos-1);
}
else
{
strcpy(r->ext,"");
}
}
printf("%d %d %s\n",file_end_pos,period_pos,r->ext);
}