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fix: corruptin when downloading webseeds (#2978)

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Fixes #2909.
This commit is contained in:
Charles Kerr
2022-04-24 12:46:44 -05:00
committed by GitHub
parent fe40692dea
commit d4e1b32e38
1 changed files with 7 additions and 3 deletions
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10
libtransmission/webseed.cc
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@@ -355,6 +355,7 @@ void useFetchedBlocks(tr_webseed_task* task)
task->loc = tor->byteLoc(task->loc.byte + block_size);
TR_ASSERT(task->loc.byte <= task->end_byte);
TR_ASSERT(task->loc.byte == task->end_byte || task->loc.block_offset == 0);
}
}
@@ -452,7 +453,8 @@ void onPartialDataFetched(tr_web::FetchResponse const& web_response)
return;
}
TR_ASSERT(evbuffer_get_length(task->content()) < tr_block_info::BlockSize);
TR_ASSERT(evbuffer_get_length(task->content()) == 0);
TR_ASSERT(task->loc.byte == task->end_byte);
webseed->tasks.erase(task);
delete task;
@@ -481,11 +483,13 @@ void task_request_next_chunk(tr_webseed_task* task)
return;
}
auto const [file_index, file_offset] = tor->fileOffset(task->loc);
auto const loc = tor->byteLoc(task->loc.byte + evbuffer_get_length(task->content()));
auto const [file_index, file_offset] = tor->fileOffset(loc);
auto const left_in_file = tor->fileSize(file_index) - file_offset;
auto const left_in_task = task->end_byte - task->loc.byte;
auto const left_in_task = task->end_byte - loc.byte;
auto const this_chunk = std::min(left_in_file, left_in_task);
TR_ASSERT(this_chunk > 0U);
webseed->connection_limiter.taskStarted();