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Block external files in exam mode

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This commit is contained in:
Damien Nicolet
2019-12-19 20:02:44 +01:00
parent 8583ddafca
commit fe11d6e354
1 changed files with 7 additions and 2 deletions
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9
apps/external/archive.cpp vendored
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@@ -1,5 +1,6 @@
#include "archive.h"
#include "extapp_api.h"
#include "../global_preferences.h"
#include <string.h>
#include <stdlib.h>
@@ -34,12 +35,16 @@ bool isSane(const TarHeader* tar) {
return !memcmp(tar->magic, "ustar ", 8) && tar->name[0] != '\x00' && tar->name[0] != '\xFF';
}
bool isExamModeAndFileNotExecutable(const TarHeader* tar) {
return GlobalPreferences::sharedGlobalPreferences()->examMode() && (tar->mode[4] & 0x01) == 0;
}
bool fileAtIndex(size_t index, File &entry) {
const TarHeader* tar = reinterpret_cast<const TarHeader*>(0x90200000);
unsigned size = 0;
// Sanity check.
if (!isSane(tar)) {
if (!isSane(tar) || isExamModeAndFileNotExecutable(tar)) {
return false;
}
@@ -58,7 +63,7 @@ bool fileAtIndex(size_t index, File &entry) {
tar = reinterpret_cast<const TarHeader*>(reinterpret_cast<const char*>(tar) + stride);
// Sanity check.
if (!isSane(tar)) {
if (!isSane(tar) || isExamModeAndFileNotExecutable(tar)) {
return false;
}
}