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http chunked: avoid unsafe cases when chunks > 2GB.
This and previous commit were inspired by Jonas' mail on elinks-dev.
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@ -1224,9 +1224,13 @@ read_chunked_http_data(struct connection *conn, struct read_buffer *rb)
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if (zero) http->chunk_remaining = 0;
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len = http->chunk_remaining;
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/* Maybe everything necessary didn't come yet.. */
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int_upper_bound(&len, rb->length);
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conn->received += len;
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if (http->chunk_remaining) {
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/* Maybe everything necessary didn't come yet..
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* This handle unlikely case when len < 0
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* or http->chunk_remaining > 4GB and len == 0 */
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int_bounds(&len, 1, rb->length);
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conn->received += len;
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}
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data = decompress_data(conn, rb->data, len, &data_len);
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