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#include "./def.h"
#include <sys/types.h>
#include "./httpencode.h"
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include "./config.h"
#if !defined(HAVE_STRNSTR) || !defined(HAVE_STRNCASECMP)
#include "compat.h"
#endif
static void url_encode_char(char *b,char c)
{
char HEX_TABLE[] = "0123456789ABCDEF";
b[0] = '%';
b[1] = HEX_TABLE[(c >> 4) & 0x0F];
b[2] = HEX_TABLE[c & 0x0F];
}
char* Http_url_encode(char *s,const char *b,size_t n)
{
size_t r,i;
for(r = 0,i = 0 ; i < n; i++){
if( !(b[i] & ~0x7f) && // quick ASCII test
((b[i] >= 0x41 && b[i] <= 0x5a) || // A-Z [ASCII]
(b[i] >= 0x61 && b[i] <= 0x7a) || // a-z
(b[i] >= 0x30 && b[i] <= 0x39)) ){ // 0-9
s[r] = b[i];
r++;
}else{
url_encode_char(s + r, b[i]);
r += 3;
}
}
s[r] = '\0';
return s;
}
int Http_url_analyse(const char *url,char *host,int *port,char *path)
{
const char *p;
int r;
*port = 80; /* default port 80 */
p = strstr(url,"://");
if( !p )
p = url;
else
p += 3;
/* host */
for(; *p && (isalnum(*p) || *p == '.' || *p == '-'); p++, host++)
*host = *p;
*host = '\0';
if( *p == ':' ){
/* port */
p++;
for( r = 0; p[r] >= '0' && p[r] <= '9' && r < 6; r++) ;
if( !r ) return -1;
*port = atoi(p);
if(*port > 65536) return -1;
p += r;
}
/* path */
if( *p != '/' ) return -1;
for( ; *p; p++,path++) *path = *p;
*path = '\0';
return 0;
}
size_t Http_split(char *b,size_t n,char **pd,size_t *dlen)
{
char *p;
size_t addtion, hlen;
hlen = 0;
if( n < 16 ) return 0; // ̫СһHTML
if(strncasecmp(b,"HTTP/",5) != 0){
return 0; // ûHTMLײ????
/* message without http header */
//*pd = b;
//*dlen = n;
}else{
if( p = strnstr(b,"\r\n\r\n",n) ) addtion = 4;
else if( p = strnstr(b,"\n\n",n) ) addtion = 2;
if( p ){
hlen = p - b;
*pd = ( p + addtion );
*dlen = n - hlen - addtion;
}else{ // ֻײϢ????
hlen = n;
*pd = (char*) 0;
*dlen = 0;
}
}
return hlen;
}
int Http_reponse_code(const char *b,size_t n)
{
int r = -1;
for(; n && *b != ' ' && *b !='\r' && *b != '\n'; b++,n--) ;
if( !n || *b != ' ') r = -1;
else{
r = atoi(b);
if( r < 100 || r > 600 ) r = -1;
}
return r;
}
int Http_get_header(const char *b,int n,const char *header,char *v)
{
const char *e;
char h[64];
int r,header_len;
strcpy(h,header);
strcat(h,": ");
header_len = strlen(h);
/* remove status line. */
e = strchr(b,'\n');
if( !e ) return -1;
e++;
n -= (e - b);
b = e;
for(; n >= 0; ){
e = strchr(b,'\n');
if( !e ) r = n; /* last line */
else{r = e - b ; r++;}
if( r > header_len ){
if( strncasecmp(b, h, header_len) == 0){
/* header found */
b += header_len;
for(; *b != '\r' && *b != '\n'; v++,b++) *v = *b;
*v = '\0';
return 0;
}
}
b += r;
n -= r;
} /* end for */
return -1;
}
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