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Donncha Ó Cearbhaill
0b5b3f2d7c
* Add the mvt.plugin import surface mvt.plugin re-exports the names a plugin needs from MVT under one import path. It holds the module base classes and Command, the alert and result types, the database errors a module raises, the timestamp converters, the plugin settings API, MVT's settings, get_plugin_logger() and MVT_VERSION. The names it exports are kept working on a best-effort basis. Changes to them are announced in the release notes. Anything else in mvt can still be imported, and may change between releases without notice. get_plugin_logger(__name__) returns a logger under mvt.ext for plugin code outside a module class. Its records then reach the console and the command.log file of a run. A file loaded with --load-module or --load-command is named after the file. * Document how to write MVT plugins The custom modules page now leads with plugin packages. Loading module files with --load-module and MVT_CUSTOM_MODULES moves to a section on developing a module locally. A new "Writing a module" section shows a module which subclasses IOSExtraction. It lists each base class, the command pair it serves and the helpers it provides. "Depending on a built-in module" says to import a built-in class from its family package. "Importing from MVT" says what mvt.plugin exports and what importing from it means. The custom commands page shows a Command subclass which lists its own modules. The sysdiagnose and plugin configuration pages import from mvt.plugin.
55 lines
2.0 KiB
Markdown
55 lines
2.0 KiB
Markdown
# Check an iOS Sysdiagnose
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`mvt-ios check-sysdiagnose` prepares an iOS sysdiagnose archive for analysis by
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custom MVT modules. MVT does not include built-in sysdiagnose modules. The
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command runs the modules of the installed
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[plugin packages](../development/index.md#installed-module-packages) which
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declare support for it. Install at least one such package first.
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The command accepts either an extracted sysdiagnose directory or the original
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gzip-compressed tar archive.
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```bash
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mvt-ios check-sysdiagnose --output ./results \
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./sysdiagnose_2024.01.02_03-04-05+0200.tar.gz
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```
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Use `--hashes` to include hashes for analyzed files in `info.json`, and
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`--list-modules` to display the eligible modules without running them.
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## Writing a custom module
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Extend `SysdiagnoseExtraction` from `mvt.plugin`, see
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[Writing a module](../development/index.md#writing-a-module). The module reads
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the archive the same way whether MVT was given a folder or a tar archive. It
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declares the command in `supported_commands`. While writing one,
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[load it from its file](../development/index.md#developing-modules-locally).
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```python
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from mvt.plugin import SysdiagnoseExtraction
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class ExampleSysdiagnoseModule(SysdiagnoseExtraction):
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supported_commands = (("ios", "check-sysdiagnose"),)
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slug = "example_sysdiagnose"
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def run(self):
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paths = self._get_files_by_pattern("*/example.log")
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if paths:
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content = self._get_file_content(paths[0]).decode("utf-8", "replace")
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self.results = [{"content": content}]
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def check_indicators(self):
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pass
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def serialize(self, result):
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return None
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```
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MVT extracts a tar archive first. It calls `from_sysdiagnose_folder()` on each
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module before `run()`. `ips_files` lists the IPS crash reports.
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`_get_files_by_pattern()` and `_get_file_content()` are internal helpers of the
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base class. Use them to read the archive. Their names and signatures can change
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between releases. See `src/mvt/ios/modules/sysdiagnose/base.py`.
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