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| author | cinap_lenrek <cinap_lenrek@gmx.de> | 2013-10-08 08:12:05 +0200 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@gmx.de> | 2013-10-08 08:12:05 +0200 |
| commit | 50e3c936fac64a1b4f0d89b909bceb4ed889f385 (patch) | |
| tree | 182fa1790c59d1b7d7704665861a419638ba7d90 | |
| parent | 3c2b09c9dc9b3bb1b7177f7683002c86d38fcaa0 (diff) | |
| download | plan9front-50e3c936fac64a1b4f0d89b909bceb4ed889f385.tar.xz | |
ip/torrent: check piece offset, vlong cast
| -rw-r--r-- | sys/src/cmd/ip/torrent.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/src/cmd/ip/torrent.c b/sys/src/cmd/ip/torrent.c index c8193d727..96d3d524a 100644 --- a/sys/src/cmd/ip/torrent.c +++ b/sys/src/cmd/ip/torrent.c @@ -192,11 +192,11 @@ rwpiece(int wr, int index, uchar *data, int len, int poff) int n, m; File *f; - if(len <= 0 || poff >= pieces[index].len) + if(len <= 0 || poff < 0 || poff >= pieces[index].len) return 0; if(len+poff > pieces[index].len) len = pieces[index].len - poff; - off = (vlong)index * blocksize; + off = (vlong)index * (vlong)blocksize; off += poff; for(f = files; f; f = f->next) if((f->off+f->len) > off) |