am 54d41379: Merge "Add OBB flags to support overlays" into gingerbread (ecf37ec4) · Commits · e / os / platform_frameworks_native

include/utils/ObbFile.h

+31 −4

Original line number	Diff line number	Diff line
		@@ -18,12 +18,16 @@
		#define OBBFILE_H_

		#include <stdint.h>
		#include <strings.h>

		#include <utils/RefBase.h>
		#include <utils/String8.h>

		namespace android {

		// OBB flags (bit 0)
		#define OBB_OVERLAY (1 << 0)

		class ObbFile : public RefBase {
		protected:
		virtual ~ObbFile();
		@@ -46,18 +50,38 @@ public:
		return mPackageName;
		}

		int32_t getVersion() const {
		return mVersion;
		}

		void setPackageName(String8 packageName) {
		mPackageName = packageName;
		}

		int32_t getVersion() const {
		return mVersion;
		}

		void setVersion(int32_t version) {
		mVersion = version;
		}

		int32_t getFlags() const {
		return mFlags;
		}

		void setFlags(int32_t flags) {
		mFlags = flags;
		}

		bool isOverlay() {
		return (mFlags & OBB_OVERLAY) == OBB_OVERLAY;
		}

		void setOverlay(bool overlay) {
		if (overlay) {
		mFlags \|= OBB_OVERLAY;
		} else {
		mFlags &= ~OBB_OVERLAY;
		}
		}

		static inline uint32_t get4LE(const unsigned char* buf) {
		return buf[0] \| (buf[1] << 8) \| (buf[2] << 16) \| (buf[3] << 24);
		}
		@@ -76,6 +100,9 @@ private:
		/* Package version this ObbFile is associated with */
		int32_t mVersion;

		/* Flags for this OBB type. */
		int32_t mFlags;

		const char* mFileName;

		size_t mFileSize;

libs/utils/ObbFile.cpp

+22 −10

Original line number	Diff line number	Diff line
		@@ -29,12 +29,13 @@

		#define kFooterTagSize 8 /* last two 32-bit integers */

		#define kFooterMinSize 21 /* 32-bit signature version
		* 32-bit package version
		* 32-bit package name size
		* 1-character package name
		* 32-bit footer size
		* 32-bit footer marker
		#define kFooterMinSize 25 /* 32-bit signature version (4 bytes)
		* 32-bit package version (4 bytes)
		* 32-bit flags (4 bytes)
		* 32-bit package name size (4-bytes)
		* >=1-character package name (1 byte)
		* 32-bit footer size (4 bytes)
		* 32-bit footer marker (4 bytes)
		*/

		#define kMaxBufSize 32768 /* Maximum file read buffer */
		@@ -45,8 +46,9 @@

		/* offsets in version 1 of the header */
		#define kPackageVersionOffset 4
		#define kPackageNameLenOffset 8
		#define kPackageNameOffset 12
		#define kFlagsOffset 8
		#define kPackageNameLenOffset 12
		#define kPackageNameOffset 16

		/*
		* TEMP_FAILURE_RETRY is defined by some, but not all, versions of
		@@ -78,7 +80,10 @@ typedef off64_t my_off64_t;
		namespace android {

		ObbFile::ObbFile() :
		mVersion(-1) {
		mPackageName(""),
		mVersion(-1),
		mFlags(0)
		{
		}

		ObbFile::~ObbFile() {
		@@ -199,6 +204,7 @@ bool ObbFile::parseObbFile(int fd)
		}

		mVersion = (int32_t) get4LE((unsigned char*)scanBuf + kPackageVersionOffset);
		mFlags = (int32_t) get4LE((unsigned char*)scanBuf + kFlagsOffset);

		uint32_t packageNameLen = get4LE((unsigned char*)scanBuf + kPackageNameLenOffset);
		if (packageNameLen <= 0
		@@ -268,6 +274,12 @@ bool ObbFile::writeTo(int fd)
		return false;
		}

		put4LE(intBuf, mFlags);
		if (write(fd, &intBuf, sizeof(uint32_t)) != (ssize_t)sizeof(uint32_t)) {
		LOGW("couldn't write package version");
		return false;
		}

		size_t packageNameLen = mPackageName.size();
		put4LE(intBuf, packageNameLen);
		if (write(fd, &intBuf, sizeof(uint32_t)) != (ssize_t)sizeof(uint32_t)) {
		@@ -280,7 +292,7 @@ bool ObbFile::writeTo(int fd)
		return false;
		}

		put4LE(intBuf, 3*sizeof(uint32_t) + packageNameLen);
		put4LE(intBuf, kPackageNameOffset + packageNameLen);
		if (write(fd, &intBuf, sizeof(uint32_t)) != (ssize_t)sizeof(uint32_t)) {
		LOGW("couldn't write footer size: %s", strerror(errno));
		return false;