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-rw-r--r--cmds/servicemanager/bctest.c3
-rw-r--r--cmds/servicemanager/service_manager.c7
-rw-r--r--include/binder/IPCThreadState.h6
-rw-r--r--include/binder/Parcel.h5
-rw-r--r--libs/binder/IPCThreadState.cpp13
-rw-r--r--libs/binder/IServiceManager.cpp7
-rw-r--r--libs/binder/Parcel.cpp8
7 files changed, 38 insertions, 11 deletions
diff --git a/cmds/servicemanager/bctest.c b/cmds/servicemanager/bctest.c
index 6dee816..ff5aced 100644
--- a/cmds/servicemanager/bctest.c
+++ b/cmds/servicemanager/bctest.c
@@ -14,6 +14,7 @@ void *svcmgr_lookup(struct binder_state *bs, void *target, const char *name)
struct binder_io msg, reply;
bio_init(&msg, iodata, sizeof(iodata), 4);
+ bio_put_uint32(&msg, 0); // strict mode header
bio_put_string16_x(&msg, SVC_MGR_NAME);
bio_put_string16_x(&msg, name);
@@ -37,7 +38,7 @@ int svcmgr_publish(struct binder_state *bs, void *target, const char *name, void
struct binder_io msg, reply;
bio_init(&msg, iodata, sizeof(iodata), 4);
-
+ bio_put_uint32(&msg, 0); // strict mode header
bio_put_string16_x(&msg, SVC_MGR_NAME);
bio_put_string16_x(&msg, name);
bio_put_obj(&msg, ptr);
diff --git a/cmds/servicemanager/service_manager.c b/cmds/servicemanager/service_manager.c
index a2006c1..01cddc6 100644
--- a/cmds/servicemanager/service_manager.c
+++ b/cmds/servicemanager/service_manager.c
@@ -193,6 +193,7 @@ int svcmgr_handler(struct binder_state *bs,
uint16_t *s;
unsigned len;
void *ptr;
+ uint32_t strict_policy;
// LOGI("target=%p code=%d pid=%d uid=%d\n",
// txn->target, txn->code, txn->sender_pid, txn->sender_euid);
@@ -200,8 +201,12 @@ int svcmgr_handler(struct binder_state *bs,
if (txn->target != svcmgr_handle)
return -1;
+ // Equivalent to Parcel::enforceInterface(), reading the RPC
+ // header with the strict mode policy mask and the interface name.
+ // Note that we ignore the strict_policy and don't propagate it
+ // further (since we do no outbound RPCs anyway).
+ strict_policy = bio_get_uint32(msg);
s = bio_get_string16(msg, &len);
-
if ((len != (sizeof(svcmgr_id) / 2)) ||
memcmp(svcmgr_id, s, sizeof(svcmgr_id))) {
fprintf(stderr,"invalid id %s\n", str8(s));
diff --git a/include/binder/IPCThreadState.h b/include/binder/IPCThreadState.h
index 3ab985d..04e24d2 100644
--- a/include/binder/IPCThreadState.h
+++ b/include/binder/IPCThreadState.h
@@ -40,6 +40,9 @@ public:
int getCallingPid();
int getCallingUid();
+
+ void setStrictModePolicy(int32_t policy);
+ int32_t getStrictModePolicy() const;
int64_t clearCallingIdentity();
void restoreCallingIdentity(int64_t token);
@@ -109,8 +112,9 @@ private:
status_t mLastError;
pid_t mCallingPid;
uid_t mCallingUid;
+ int32_t mStrictModePolicy;
};
-
+
}; // namespace android
// ---------------------------------------------------------------------------
diff --git a/include/binder/Parcel.h b/include/binder/Parcel.h
index 66c34b2..2cc4db9 100644
--- a/include/binder/Parcel.h
+++ b/include/binder/Parcel.h
@@ -56,9 +56,12 @@ public:
bool hasFileDescriptors() const;
+ // Writes the RPC header.
status_t writeInterfaceToken(const String16& interface);
+ // Parses the RPC header, returning true if the interface name
+ // in the header matches the expected interface from the caller.
bool enforceInterface(const String16& interface) const;
- bool checkInterface(IBinder*) const;
+ bool checkInterface(IBinder*) const;
void freeData();
diff --git a/libs/binder/IPCThreadState.cpp b/libs/binder/IPCThreadState.cpp
index 0016503..28706ba 100644
--- a/libs/binder/IPCThreadState.cpp
+++ b/libs/binder/IPCThreadState.cpp
@@ -367,6 +367,16 @@ int64_t IPCThreadState::clearCallingIdentity()
return token;
}
+void IPCThreadState::setStrictModePolicy(int32_t policy)
+{
+ mStrictModePolicy = policy;
+}
+
+
+int32_t IPCThreadState::getStrictModePolicy() const {
+ return mStrictModePolicy;
+}
+
void IPCThreadState::restoreCallingIdentity(int64_t token)
{
mCallingUid = (int)(token>>32);
@@ -588,7 +598,8 @@ status_t IPCThreadState::clearDeathNotification(int32_t handle, BpBinder* proxy)
}
IPCThreadState::IPCThreadState()
- : mProcess(ProcessState::self()), mMyThreadId(androidGetTid())
+ : mProcess(ProcessState::self()), mMyThreadId(androidGetTid()),
+ mStrictModePolicy(0)
{
pthread_setspecific(gTLS, this);
clearCaller();
diff --git a/libs/binder/IServiceManager.cpp b/libs/binder/IServiceManager.cpp
index 0cf4158..a3a3f0e 100644
--- a/libs/binder/IServiceManager.cpp
+++ b/libs/binder/IServiceManager.cpp
@@ -129,19 +129,19 @@ public:
: BpInterface<IServiceManager>(impl)
{
}
-
+
virtual sp<IBinder> getService(const String16& name) const
{
unsigned n;
for (n = 0; n < 5; n++){
sp<IBinder> svc = checkService(name);
if (svc != NULL) return svc;
- LOGI("Waiting for sevice %s...\n", String8(name).string());
+ LOGI("Waiting for service %s...\n", String8(name).string());
sleep(1);
}
return NULL;
}
-
+
virtual sp<IBinder> checkService( const String16& name) const
{
Parcel data, reply;
@@ -226,4 +226,3 @@ status_t BnServiceManager::onTransact(
}
}; // namespace android
-
diff --git a/libs/binder/Parcel.cpp b/libs/binder/Parcel.cpp
index 00d2210..c2574bd 100644
--- a/libs/binder/Parcel.cpp
+++ b/libs/binder/Parcel.cpp
@@ -19,6 +19,7 @@
#include <binder/Parcel.h>
+#include <binder/IPCThreadState.h>
#include <binder/Binder.h>
#include <binder/BpBinder.h>
#include <utils/Debug.h>
@@ -436,19 +437,22 @@ bool Parcel::hasFileDescriptors() const
return mHasFds;
}
+// Write RPC headers. (previously just the interface token)
status_t Parcel::writeInterfaceToken(const String16& interface)
{
+ writeInt32(IPCThreadState::self()->getStrictModePolicy());
// currently the interface identification token is just its name as a string
return writeString16(interface);
}
bool Parcel::checkInterface(IBinder* binder) const
{
- return enforceInterface(binder->getInterfaceDescriptor());
+ return enforceInterface(binder->getInterfaceDescriptor());
}
bool Parcel::enforceInterface(const String16& interface) const
{
+ int32_t strict_policy = readInt32();
const String16 str(readString16());
if (str == interface) {
return true;
@@ -457,7 +461,7 @@ bool Parcel::enforceInterface(const String16& interface) const
String8(interface).string(), String8(str).string());
return false;
}
-}
+}
const size_t* Parcel::objects() const
{
generated by cgit v1.1 at 2024-09-14 02:48:12 +0000