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opentracker
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Some syntax errors removed

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dynamic-accesslists
erdgeist 18 years ago
parent 83e339bbe0
commit 898206ac7a
4 changed files with 33 additions and 40 deletions
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2
Makefile
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@ -2,7 +2,7 @@ CC?=gcc
CFLAGS+=-I../libowfat -Wall -O2 -pipe
LDFLAGS+=-L../libowfat/ -lowfat -s
SOURCES=opentracker.c trackerlogic.c
SOURCES=opentracker.c trackerlogic.c scan_urlencoded_query.c
opentracker: $(SOURCES)
$(CC) $(SOURCES) -o opentracker $(CFLAGS) $(LDFLAGS)

37
opentracker.c
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@ -14,6 +14,9 @@
#include <stdlib.h>
#include <errno.h>
#include "trackerlogic.h"
#include "scan_urlencoded_query.h"
static void carp(const char* routine) {
buffer_puts(buffer_2,routine);
buffer_puts(buffer_2,": ");
@ -112,9 +115,7 @@ e400:
}
else
{
char *d;
int64 fd;
struct stat s;
char *d, *data;
// expect 'GET /uri?nnbjhg HTTP/1.*'
c+=4;
@ -130,19 +131,18 @@ e400:
switch( scan_urlencoded_query( &c, data, SCAN_PATH ) ) {
case 6: /* scrape ? */
if (!byte_diff(c,6,"scrape"))
goto 404;
goto e404;
break;
case 9:
if( !byte_diff(c,8,"announce"))
goto 404;
goto e404;
else {
// info_hash, left, port, numwant, compact
struct ot_peer peer;
ot_hash hash;
byte_copy( peer.ip, h->ip, 4);
byte_copy( peer.ip, 4, h->ip );
peer.port = 6881;
while( NOCHAMSCANNEN ) {
while( 1 ) {
data = c;
switch( scan_urlencoded_query( &c, data, SCAN_SEARCHPATH_PARAM ) ) {
case -1: /* error */
@ -150,20 +150,21 @@ e400:
goto e404;
case 4:
if(!byte_diff(c,4,"port"))
/* scan int */
/* scan int */ c;
else if(!byte_diff(c,4,"left"))
/* scan int */
/* scan int */ c;
break;
case 7:
if(!byte_diff(c,7,"numwant"))
/* scan int */
/* scan int */ c;
else if(!byte_diff(c,7,"compact"))
/* scan flag */
/* scan flag */ c;
break;
case 9: /* info_hash */
if(!byte_diff(c,9,"info_hash"))
if(!byte_diff(c,9,"info_hash")) c;
/* scan 20 bytes */
break;
}
}
}
break;
@ -176,13 +177,13 @@ e400:
c+=fmt_str(c,"HTTP/1.1 Coming Up\r\nContent-Type: text/plain");
c+=fmt_str(c,"\r\nContent-Length: ");
/* ANSWER SIZE*/
c+=fmt_ulonglong(c,s.st_size);
c+=fmt_ulonglong(c, 100 );
c+=fmt_str(c,"\r\nLast-Modified: ");
/* MODIFY DATE */
c+=fmt_httpdate(c,s.st_mtime);
/* MODIFY DATE
c+=fmt_httpdate(c,s.st_mtime); */
c+=fmt_str(c,"\r\nConnection: close\r\n\r\n");
iob_addbuf(&h->iob,h->hdrbuf,c - h->hdrbuf);
iob_addbuf(&h->iob,tracker_answer, tzracker_answer_size);
iob_addbuf(&h->iob,tracker_answer, tracker_answer_size);
}
e404:
io_dontwantread(s);
@ -227,7 +228,7 @@ int main()
if (h)
{
byte_zero(h,sizeof(struct http_data));
byte_copy(h->ip,ip,sizeof(ip));
byte_copy(h->ip,sizeof(ip),ip);
io_setcookie(n,h);
} else
io_close(n);

32
scan_urlencoded_query.c
Unescape Escape View File

@ -1,13 +1,5 @@
#include "scan.h"
#define BREAK_AT_QUESTIONMARK (1<<0)
#define BREAK_AT_WHITESPACE (1<<1)
#define BREAK_AT_AMPERSAND (1<<2)
#define BREAK_AT_EQUALSIGN (1<<3)
#define SCAN_PATH ( BREAK_AT_QUESTIONMARK | BREAK_AT_WHITESPACE )
#define SCAN_SEARCHPATH_PARAM ( BREAK_AT_EQUALSIGN )
#define SCAN_SEARCHPATH_VALUE ( BREAK_AT_AMPERSAND | BREAK_AT_WHITESPACE )
#include "scan_urlencoded_query.h"
// Idea is to do a in place replacement or guarantee at least
// strlen( string ) bytes in deststring
@ -17,19 +9,19 @@
// we add '%' to the matrix to not stop at encoded chars.
static const unsigned char reserved_matrix[] = { 0xA2, 0x63, 0xFF, 0x03, 0xFE, 0xFF, 0xFF, 0x87, 0xFE, 0xFF, 0xFF, 0x47};
inline int is_unreserved( unsigned char c ) const {
inline int is_unreserved( unsigned char c ) {
if( ( c <= 32 ) || ( c >= 127 ) ) return 0; return 1&(reserved_matrix[(c-32)>>3]>>(c&7));
}
size_t scan_urlencoded_query(char **string, char *deststring, int flags) {
register const unsigned char* s=*(const unsigned char*) string;
const unsigned char *d = deststring;
register const unsigned char* s=*(const unsigned char**) string;
unsigned char *d = (unsigned char*)deststring;
register unsigned char b, c;
while ( is_unreserved( c = *s++) ) {
if (c=='%') {
if( ( c = scan_fromhex(*s++) ) < 0 ) return -1;
if( ( b = scan_fromhex(*s++) ) < 0 ) return -1;
if( ( c = scan_fromhex(*s++) ) == 0xff ) return -1;
if( ( b = scan_fromhex(*s++) ) == 0xff ) return -1;
c=(c<<4)|b;
}
*d++ = c;
@ -37,21 +29,21 @@ size_t scan_urlencoded_query(char **string, char *deststring, int flags) {
switch( c ) {
case 0: case '\r': case '\n': case ' ':
if ( flags & BREAK_AT_WHITESPACE == 0 ) return -1;
if ( ( flags & BREAK_AT_WHITESPACE ) == 0 ) return -1;
break;
case '?':
if ( flags & BREAK_AT_QUESTIONMARK == 0 ) return -1;
if ( ( flags & BREAK_AT_QUESTIONMARK ) == 0 ) return -1;
break;
case '=':
if ( flags & BREAK_AT_EQUALSIGN == 0 ) return -1;
if ( ( flags & BREAK_AT_EQUALSIGN ) == 0 ) return -1;
break;
case '&':
if ( flags & BREAK_AT_AMPERSAND == 0 ) return -1;
if ( ( flags & BREAK_AT_AMPERSAND ) == 0 ) return -1;
break;
default:
return -1;
}
*string = s;
return d - deststring;
*string = (char *)s;
return d - (unsigned char*)deststring;
}

2
scan_urlencoded_query.h
Unescape Escape View File

@ -1,4 +1,4 @@
#ifdef __SCAN_URLENCODED_QUERY_H__
#ifndef __SCAN_URLENCODED_QUERY_H__
#define __SCAN_URLENCODED_QUERY_H__
#define BREAK_AT_QUESTIONMARK (1<<0)

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