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68 lines
2.2 KiB
C
68 lines
2.2 KiB
C
17 years ago
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/* This software was written by Dirk Engling <erdgeist@erdgeist.org>
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It is considered beerware. Prost. Skol. Cheers or whatever. */
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/* System */
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#include <sys/uio.h>
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#include <stdio.h>
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#include <string.h>
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/* Libowfat */
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/* Opentracker */
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#include "trackerlogic.h"
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#include "ot_mutex.h"
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#include "ot_iovec.h"
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#include "ot_fullscrape.h"
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/* Fetch full scrape info for all torrents
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Full scrapes usually are huge and one does not want to
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allocate more memory. So lets get them in 1M units
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*/
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#define OT_SCRAPE_CHUNK_SIZE (256*1024)
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/* "d8:completei%zde10:downloadedi%zde10:incompletei%zdee" */
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#define OT_FULLSCRAPE_MAXENTRYLEN 100
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size_t return_fullscrape_for_tracker( int *iovec_entries, struct iovec **iovector ) {
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int bucket;
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size_t j;
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char *r, *re;
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*iovec_entries = 0;
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if( !( r = iovec_increase( iovec_entries, iovector, OT_SCRAPE_CHUNK_SIZE ) ) )
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return 0;
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re = r + OT_SCRAPE_CHUNK_SIZE;
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memmove( r, "d5:filesd", 9 ); r += 9;
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for( bucket=0; bucket<OT_BUCKET_COUNT; ++bucket ) {
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ot_vector *torrents_list = mutex_bucket_lock( bucket );
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for( j=0; j<torrents_list->size; ++j ) {
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ot_peerlist *peer_list = ( ((ot_torrent*)(torrents_list->data))[j] ).peer_list;
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ot_hash *hash =&( ((ot_torrent*)(torrents_list->data))[j] ).hash;
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if( peer_list->peer_count || peer_list->down_count ) {
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*r++='2'; *r++='0'; *r++=':';
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memmove( r, hash, 20 ); r+=20;
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r += sprintf( r, "d8:completei%zde10:downloadedi%zde10:incompletei%zdee", peer_list->seed_count, peer_list->down_count, peer_list->peer_count-peer_list->seed_count );
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}
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if( re - r <= OT_FULLSCRAPE_MAXENTRYLEN ) {
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iovec_fixlast( iovec_entries, iovector, OT_SCRAPE_CHUNK_SIZE - ( re - r ) );
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if( !( r = iovec_increase( iovec_entries, iovector, OT_SCRAPE_CHUNK_SIZE ) ) ) {
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iovec_free( iovec_entries, iovector );
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mutex_bucket_unlock( bucket );
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return 0;
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}
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re = r + OT_SCRAPE_CHUNK_SIZE;
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}
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}
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mutex_bucket_unlock( bucket );
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}
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*r++='e'; *r++='e';
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iovec_fixlast( iovec_entries, iovector, OT_SCRAPE_CHUNK_SIZE - ( re - r ) );
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return iovec_length( iovec_entries, iovector );
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}
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