Bug 739273
| Summary: | Hivexml prints binary data in XML, causing Python Expat processing to fail | ||||||
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| Product: | [Fedora] Fedora | Reporter: | Alex Nelson <ajnelson> | ||||
| Component: | hivex | Assignee: | Richard W.M. Jones <rjones> | ||||
| Status: | CLOSED WONTFIX | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 15 | CC: | mbooth, rjones | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | x86_64 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2012-08-07 18:13:57 UTC | Type: | --- | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Attachments: |
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Created attachment 523677 [details] Zip containing Python program and two hives on which hivexml produces output the Python program can't process. Description of problem: The node name data, value key data, and value text data is assumed to be printable. Unfortunately, if that assumption is false arbitrary content is written to be interpreted as text. Version-Release number of selected component (if applicable): Git commit: 0a28041f4156878a74543966f9a72ed3d214ba44 (master as of Sep 6 2011) Version: 1.3.1 How reproducible: Precisely, in Fedora Core 15 environment. Not tested in Ubuntu or non-Linux environments, but same problem is nearly guaranteed to occur there. Steps to Reproduce: To see a name character 1. Run: `hivexml charlie-2009-11-12.software.hive >out.xml` 2. Run: `simple_expat.py out.xml >out.txt` Alternatively, 1. Run: `hivexml terry-2009-12-02.software.hive >out.xml` 2. Run: `simple_expat.py out.xml >out.txt` Actual results: There is a Registered sign character, hex 0xae, in the hivexml output. This causes the Python Expat processor to balk: Traceback (most recent call last): File "/home/alex/local/scripts/simple_expat.py", line 24, in <module> p.ParseFile(open(sys.argv[1], "r")) xml.parsers.expat.ExpatError: not well-formed (invalid token): line 292, column 275590 It is visible immediately after the string: node name="Indeo Similarly, the terry hive dumps simply arbitrary binary data as part of a string list at line 8289, column 40040 in the hivexml output. It follows the string: key="Unchecked Task Count" value="250"/><value type="string-list" key="Autorecover MOFs" Expected results: Desired results are that Python's Expat processor simply read the value as unicode data or binary data and proceed with parsing. That's out of scope of hivex. Instead, having dangerous-to-print data come out in a safe text form is more desirable. Additional info: Base64 encoding completely resolves this problem, and is already applied elsewhere within the hivexml program. Patch coming to the libguestfs mailing list.