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The non-A/B package installation is subject to TOC/TOU flaw if the
attacker can switch the package in the middle of installation. And the
most pratical case is to store the package on an external device, e.g. a
sdcard, and swap the device in the middle.
To prevent that, we can adopt the same protection as used in sideloading
a package with FUSE. Specifically, when we install the package with FUSE,
we read the entire package to cryptographically verify its signature.
The hash for each transfer block is recorded in the memory (TOC), and
the subsequent reads (TOU) will be rejected upon dectecting a mismatch.
This CL forces the package installation with FUSE when the package stays
on a removable media.
Bug: 136498130
Test: Run bin/recovery --update_package with various paths;
and packages are installed from FUSE as expected
Change-Id: Ibc9b095036a2fa624e8edf6c347ed4f12aef072f
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Bug: http://b/129068177
Test: treehugger
Change-Id: Ie5b2b0cff087f2e9e65a4e77c187e3173357f3ad
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The results from these functions have boolean semantics. They're
returning `int` prior to this CL, with some of them mixing 0 and
InstallResult. Note that SetUpNonAbUpdateCommands() was returning
INSTALL_CORRUPT / INSTALL_ERROR / 0 prior to this change, but all the
callers handle INSTALL_CORRUPT and INSTALL_ERROR the same way.
This CL changes them to return bool instead.
Test: `mmma -j bootable/recovery`
Test: TreeHugger
Test: Sideload on taimen.
Change-Id: Ic1b5dbf79aaca68b53ab8ea2c8ba3d19f988c571
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Most of the tests in component/ are in fact unit tests. And it doesn't
look practically beneficial to distinguish between the two:
- They have the same test setup;
- We always run both (recovery_unit_test and recovery_component_test)
at the same time;
- Breaking any of them would be equally bad.
This CL merges the tests in recovery_component_test into
recovery_unit_test to save the effort to maintain both.
Test: Run recovery_unit_test on marlin (via `adb sync data`).
Test: `atest recovery_unit_test`
Change-Id: I93ff32e7219cd83425a4bcfe5613978a8dd48d75
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