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Remove corrupted license file from storage.

Browse Source 
(This is a port of http://go/wvgerrit/11614 from the
 Widevine repo.)

CDM does not recover if a license file has invalid size
or the hash is incorrect. Remove the corrupted license
file in such cases.

bug: 18002606

Change-Id: I46dec853ce6b2e7c7430297d50df5d30488cde3b
This commit is contained in:
Edwin Wong
2014-11-06 17:07:48 -08:00
parent fb651077ba
commit 59da418883
1 changed files with 6 additions and 0 deletions
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6
libwvdrmengine/cdm/core/src/device_files.cpp
View File

@@ -603,6 +603,9 @@ bool DeviceFiles::RetrieveFile(const char* name, std::string* serialized_file) {
ssize_t bytes = file_->FileSize(path);
if (bytes <= 0) {
LOGW("DeviceFiles::RetrieveFile: File size invalid: %s", path.c_str());
// Remove the corrupted file so the caller will not get the same error
// when trying to access the file repeatedly, causing the system to stall.
file_->Remove(path);
return false;
}
@@ -637,6 +640,9 @@ bool DeviceFiles::RetrieveFile(const char* name, std::string* serialized_file) {
if (hash.compare(hash_file.hash())) {
LOGW("DeviceFiles::RetrieveFile: Hash mismatch");
// Remove the corrupted file so the caller will not get the same error
// when trying to access the file repeatedly, causing the system to stall.
file_->Remove(path);
return false;
}