[PDFBOX-1333] Stream parsing of BaseParser should fall back to scanning if length value is wrong

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.7.0
• Fix Version/s: 1.7.1
• Component/s: Parsing
• Assignee: Timo Boehme
• Reporter: Timo Boehme
• Created: 06/Jun/12 13:23
• Updated: 08/Apr/14 16:58
• Resolved: 16/Jul/12 16:09

Description

In 1.7.0 stream parsing in BaseParser was optimized to use length value if available. The advantage is faster parsing and independence of 'endstream' bytes sequences in stream. However the disadvantage is that streams with wrong length values cannot be parsed anymore (see PDFBOX-1331).
To solve this we should check if 'endstream' is really reached when using length value and if not, fall back to 'old' behavior of reading stream until 'endstream' is found.

Issue Links

• is related to: PDFBOX-2016 Stream parsing still incorrect if length value is wrong