int header_complete(struct http_data* r)
{
- long i;
+ long i;
- long l = array_bytes(&r->r);
- const char* c = array_start(&r->r);
+ long l = array_bytes(&r->r);
+ const char* c = array_start(&r->r);
- for (i=0; i+1<l; ++i)
- {
- if (c[i]=='\n' && c[i+1]=='\n')
- return i+2;
+ for (i=0; i+1<l; ++i)
+ {
+ if (c[i]=='\n' && c[i+1]=='\n')
+ return i+2;
- if (i+3<l && c[i]=='\r' && c[i+1]=='\n' && c[i+2]=='\r' && c[i+3]=='\n')
- return i+4;
- }
- return 0;
+ if (i+3<l && c[i]=='\r' && c[i+1]=='\n' && c[i+2]=='\r' && c[i+3]=='\n')
+ return i+4;
+ }
+ return 0;
}
void httperror(struct http_data* r,const char* title,const char* message)
{
- char* c;
- c=r->hdrbuf=(char*)malloc(strlen(message)+strlen(title)+200);
-
- if (!c)
- {
- r->hdrbuf="HTTP/1.0 500 internal error\r\nContent-Type: text/plain\r\nConnection: close\r\n\r\nout of memory\n";
- r->hlen=strlen(r->hdrbuf);
- }
- else
- {
- c+=fmt_str(c,"HTTP/1.0 ");
- c+=fmt_str(c,title);
- c+=fmt_str(c,"\r\nContent-Type: text/html\r\nConnection: close\r\nContent-Length: ");
- c+=fmt_ulong(c,strlen(message)+strlen(title)+16-4);
- c+=fmt_str(c,"\r\n\r\n<title>");
- c+=fmt_str(c,title+4);
- c+=fmt_str(c,"</title>\n");
- r->hlen=c - r->hdrbuf;
- }
- iob_addbuf(&r->iob,r->hdrbuf,r->hlen);
+ char* c;
+ c=r->hdrbuf=(char*)malloc(strlen(message)+strlen(title)+200);
+
+ if (!c)
+ {
+ r->hdrbuf="HTTP/1.0 500 internal error\r\nContent-Type: text/plain\r\nConnection: close\r\n\r\nout of memory\n";
+ r->hlen=strlen(r->hdrbuf);
+ }
+ else
+ {
+ c+=fmt_str(c,"HTTP/1.0 ");
+ c+=fmt_str(c,title);
+ c+=fmt_str(c,"\r\nContent-Type: text/html\r\nConnection: close\r\nContent-Length: ");
+ c+=fmt_ulong(c,strlen(message)+strlen(title)+16-4);
+ c+=fmt_str(c,"\r\n\r\n<title>");
+ c+=fmt_str(c,title+4);
+ c+=fmt_str(c,"</title>\n");
+ r->hlen=c - r->hdrbuf;
+ }
+ iob_addbuf(&r->iob,r->hdrbuf,r->hlen);
}
// bestimmten http parameter auslesen und adresse zurueckgeben
const char* http_header(struct http_data* r,const char* h)
{
- long i;
-
- long l = array_bytes(&r->r);
- long sl = strlen(h);
- const char* c = array_start(&r->r);
-
- for (i=0; i+sl+2<l; ++i)
- {
- if (c[i]=='\n' && case_equalb(c+i+1,sl,h) && c[i+sl+1]==':')
- {
- c+=i+sl+1;
- if (*c==' ' || *c=='\t') ++c;
- return c;
- }
- return 0;
- }
+ long i;
+
+ long l = array_bytes(&r->r);
+ long sl = strlen(h);
+ const char* c = array_start(&r->r);
+
+ for (i=0; i+sl+2<l; ++i)
+ {
+ if (c[i]=='\n' && case_equalb(c+i+1,sl,h) && c[i+sl+1]==':')
+ {
+ c+=i+sl+1;
+ if (*c==' ' || *c=='\t') ++c;
+ return c;
+ }
+ return 0;
+ }
}
void httpresponse(struct http_data* h,int64 s)
{
- char* c;
- array_cat0(&h->r);
+ char* c;
+ array_cat0(&h->r);
- c = array_start(&h->r);
+ c = array_start(&h->r);
- if (byte_diff(c,4,"GET "))
- {
+ if (byte_diff(c,4,"GET "))
+ {
e400:
- httperror(h,"400 Invalid Request","This server only understands GET.");
- }
- else
- {
- char *d;
- int64 fd;
- struct stat s;
-
- // expect 'GET /uri?nnbjhg HTTP/1.*'
- c+=4;
-
- for (d=c; *d!=' '&&*d!='\t'&&*d!='\n'&&*d!='\r'; ++d) ;
-
- if (*d!=' ') goto e400;
- *d=0;
- if (c[0]!='/') goto e404;
- while (c[1]=='/') ++c;
-
- if (!byte_diff(c,9,"announce?"))
- {
- // info_hash, left, port, numwant, compact
- struct ot_peer peer;
+ httperror(h,"400 Invalid Request","This server only understands GET.");
+ }
+ else
+ {
+ char *d;
+ int64 fd;
+ struct stat s;
+
+ // expect 'GET /uri?nnbjhg HTTP/1.*'
+ c+=4;
+
+ for (d=c; *d!=' '&&*d!='\t'&&*d!='\n'&&*d!='\r'; ++d) ;
+
+ if (*d!=' ') goto e400;
+ *d=0;
+ if (c[0]!='/') goto e404;
+ while (c[1]=='/') ++c;
+
+ data = c;
+ switch( scan_urlencoded_query( &c, data, SCAN_PATH ) ) {
+ case 6: /* scrape ? */
+ if (!byte_diff(c,6,"scrape"))
+ goto 404;
+ break;
+ case 9:
+ if( !byte_diff(c,8,"announce"))
+ goto 404;
+ else {
+ // info_hash, left, port, numwant, compact
+ struct ot_peer peer;
ot_hash hash;
- byte_copy( peer.ip, h->ip, 4);
- peer.port = 6881;
-
- c+=9;
- while( *c!=' ' ) {
- if(!byte_diff(c,10,"info_hash="))
- {
- size_t destlen = 20;
- // String is expected to be URL encoded, so expect
- // (%[0-9A-F][0-9A-F]){20}
-
- int s = scan_urlencoded( c+10, hash, &destlen);
- if( c[s+10] != '&' )
- goto e_parse;
-
- }
- else if(!byte_diff(c,8,"numwant="))
- {
-
- }
- else if(!byte_diff(c,8,"compact="))
- {
-
- }
- else if(!byte_diff(c,5,"port="))
- {
-
- }
- else if(!byte_diff(c,5,"left="))
- {
-
- }
-
- while( *++c!=' ' && *c!='&');
- }
- }
- else if (!byte_diff(c,7,"scrape?"))
- {
-
- }
- else
- {
- httperror(h,"404 Not Found","No such file or directory.");
- goto e404;
- }
-
- c=h->hdrbuf=(char*)malloc(500);
- 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_str(c,"\r\nLast-Modified: ");
- /* 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);
- }
+ byte_copy( peer.ip, h->ip, 4);
+ peer.port = 6881;
+
+ while( NOCHAMSCANNEN ) {
+ data = c;
+ switch( scan_urlencoded_query( &c, data, SCAN_SEARCHPATH_PARAM ) ) {
+ case -1: /* error */
+ httperror(h,"404 Not Found","No such file or directory.");
+ goto e404;
+ case 4:
+ if(!byte_diff(c,4,"port"))
+ /* scan int */
+ else if(!byte_diff(c,4,"left"))
+ /* scan int */
+ break;
+ case 7:
+ if(!byte_diff(c,7,"numwant"))
+ /* scan int */
+ else if(!byte_diff(c,7,"compact"))
+ /* scan flag */
+ break;
+ case 9: /* info_hash */
+ if(!byte_diff(c,9,"info_hash"))
+ /* scan 20 bytes */
+ break;
+ }
+ }
+ break;
+ default: /* neither scrape nor announce */
+ httperror(h,"404 Not Found","No such file or directory.");
+ goto e404;
+ }
+
+ c=h->hdrbuf=(char*)malloc(500);
+ 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_str(c,"\r\nLast-Modified: ");
+ /* 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);
+ }
e404:
- io_dontwantread(s);
- io_wantwrite(s);
+ io_dontwantread(s);
+ io_wantwrite(s);
}
int main()
{
- int s=socket_tcp6();
- uint32 scope_id;
- char ip[16];
- uint16 port;
-
- if (socket_bind6_reuse(s,V6any,8000,0)==-1)
- panic("socket_bind6_reuse");
-
- if (socket_listen(s,16)==-1)
- panic("socket_listen");
-
- if (!io_fd(s))
- panic("io_fd");
-
- io_wantread(s);
-
- for (;;)
- {
- int64 i;
- io_wait();
-
- while ((i=io_canread())!=-1)
- {
- if (i==s) // ist es der serversocket?
- {
- int n;
- while ((n=socket_accept6(s,ip,&port,&scope_id))!=-1)
- {
- if (io_fd(n))
- {
- struct http_data* h=(struct http_data*)malloc(sizeof(struct http_data));
- io_wantread(n);
-
- if (h)
- {
- byte_zero(h,sizeof(struct http_data));
- byte_copy(h->ip,ip,sizeof(ip));
- io_setcookie(n,h);
- } else
- io_close(n);
- } else
- io_close(n);
- buffer_putnlflush(buffer_2);
- }
- if (errno==EAGAIN)
- io_eagain(s);
- else
- carp("socket_accept6");
- }
- else
- {
- char buf[8192];
- struct http_data* h=io_getcookie(i);
-
- int l=io_tryread(i,buf,sizeof buf);
- if (l<=0)
- {
- if (h)
- {
- array_reset(&h->r);
- iob_reset(&h->iob);
- free(h->hdrbuf); h->hdrbuf=0;
- }
- io_close(i);
- }
- else
- {
- array_catb(&h->r,buf,l);
-
- if (array_failed(&h->r))
- {
- httperror(h,"500 Server Error","request too long.");
+ int s=socket_tcp6();
+ uint32 scope_id;
+ char ip[16];
+ uint16 port;
+
+ if (socket_bind6_reuse(s,V6any,8000,0)==-1)
+ panic("socket_bind6_reuse");
+
+ if (socket_listen(s,16)==-1)
+ panic("socket_listen");
+
+ if (!io_fd(s))
+ panic("io_fd");
+
+ io_wantread(s);
+
+ for (;;)
+ {
+ int64 i;
+ io_wait();
+
+ while ((i=io_canread())!=-1)
+ {
+ if (i==s) // ist es der serversocket?
+ {
+ int n;
+ while ((n=socket_accept6(s,ip,&port,&scope_id))!=-1)
+ {
+ if (io_fd(n))
+ {
+ struct http_data* h=(struct http_data*)malloc(sizeof(struct http_data));
+ io_wantread(n);
+
+ if (h)
+ {
+ byte_zero(h,sizeof(struct http_data));
+ byte_copy(h->ip,ip,sizeof(ip));
+ io_setcookie(n,h);
+ } else
+ io_close(n);
+ } else
+ io_close(n);
+ buffer_putnlflush(buffer_2);
+ }
+ if (errno==EAGAIN)
+ io_eagain(s);
+ else
+ carp("socket_accept6");
+ }
+ else
+ {
+ char buf[8192];
+ struct http_data* h=io_getcookie(i);
+
+ int l=io_tryread(i,buf,sizeof buf);
+ if (l<=0)
+ {
+ if (h)
+ {
+ array_reset(&h->r);
+ iob_reset(&h->iob);
+ free(h->hdrbuf); h->hdrbuf=0;
+ }
+ io_close(i);
+ }
+ else
+ {
+ array_catb(&h->r,buf,l);
+
+ if (array_failed(&h->r))
+ {
+ httperror(h,"500 Server Error","request too long.");
emerge:
- io_dontwantread(i);
- io_wantwrite(i);
- }
- else if (array_bytes(&h->r)>8192)
- {
- httperror(h,"500 request too long","You sent too much headers");
- goto emerge;
- }
- else if ((l=header_complete(h)))
- {
- httpresponse(h,i);
- }
- }
- }
- }
-
- while ((i=io_canwrite())!=-1)
- {
- struct http_data* h=io_getcookie(i);
-
- int64 r=iob_send(i,&h->iob);
-
- if (r==-1)
- io_eagain(i);
- else
- if (r<=0)
- {
- array_trunc(&h->r);
- iob_reset(&h->iob);
- free(h->hdrbuf); h->hdrbuf=0;
- io_close(i);
- }
- }
- }
- return 0;
+ io_dontwantread(i);
+ io_wantwrite(i);
+ }
+ else if (array_bytes(&h->r)>8192)
+ {
+ httperror(h,"500 request too long","You sent too much headers");
+ goto emerge;
+ }
+ else if ((l=header_complete(h)))
+ {
+ httpresponse(h,i);
+ }
+ }
+ }
+ }
+
+ while ((i=io_canwrite())!=-1)
+ {
+ struct http_data* h=io_getcookie(i);
+
+ int64 r=iob_send(i,&h->iob);
+
+ if (r==-1)
+ io_eagain(i);
+ else
+ if (r<=0)
+ {
+ array_trunc(&h->r);
+ iob_reset(&h->iob);
+ free(h->hdrbuf); h->hdrbuf=0;
+ io_close(i);
+ }
+ }
+ }
+ return 0;
}
projects / thirdparty / opentracker.git / commitdiff
