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Add size check for the read() function

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This commit is contained in:
Maschell 2019-05-04 12:26:31 +02:00
parent 5e05c65efd
commit 2c3a5332a4
2 changed files with 12 additions and 2 deletions
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5
src/main/java/de/mas/wiiu/jnus/fuse_wiiu/implementation/FSTDataProviderContainer.java
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@ -116,6 +116,11 @@ public class FSTDataProviderContainer implements FuseContainer {
if (offset + size > entry.getFileSize()) { if (offset + size > entry.getFileSize()) {
size = entry.getFileSize() - offset; size = entry.getFileSize() - offset;
} }
if(size > Integer.MAX_VALUE) {
System.err.println("Request read size was too big.");
return -ErrorCodes.EIO();
}
try { try {
byte[] data = getDataProvider().readFile(entry, offset, size); byte[] data = getDataProvider().readFile(entry, offset, size);

9
src/main/java/de/mas/wiiu/jnus/fuse_wiiu/implementation/NUSTitleEncryptedFuseContainer.java
View File

@ -197,6 +197,11 @@ public class NUSTitleEncryptedFuseContainer implements FuseContainer {
if (path.equals("/")) { if (path.equals("/")) {
return -ErrorCodes.EISDIR(); return -ErrorCodes.EISDIR();
} }
if(size > Integer.MAX_VALUE) {
System.err.println("Request read size was too big.");
return -ErrorCodes.EIO();
}
path = path.substring(1); path = path.substring(1);
@ -204,7 +209,7 @@ public class NUSTitleEncryptedFuseContainer implements FuseContainer {
if (coOptional.isPresent()) { if (coOptional.isPresent()) {
Content c = coOptional.get(); Content c = coOptional.get();
if (offset >= c.getEncryptedFileSize()) { if (offset >= c.getEncryptedFileSize()) {
return -ErrorCodes.ENOENT(); return -ErrorCodes.EIO();
} }
if (offset + size > c.getEncryptedFileSize()) { if (offset + size > c.getEncryptedFileSize()) {
size = c.getEncryptedFileSize() - offset; size = c.getEncryptedFileSize() - offset;
@ -225,7 +230,7 @@ public class NUSTitleEncryptedFuseContainer implements FuseContainer {
byte[] hash = h3Data.get(); byte[] hash = h3Data.get();
if (offset >= hash.length) { if (offset >= hash.length) {
return -ErrorCodes.ENOENT(); return -ErrorCodes.EIO();
} }
if (offset + size > hash.length) { if (offset + size > hash.length) {
size = hash.length - offset; size = hash.length - offset;