From 030759357f01a09f15e703f145f838ce74eefd2e Mon Sep 17 00:00:00 2001
From: Soyoung Kim <sy037.kim@samsung.com>
Date: Mon, 8 Jul 2013 21:23:56 +0900
Subject: [PATCH] Support Tizen app DRM

[Issue#] N/A
[Problem] N/A
[Cause] N/A
[Solution] Support Tizen DRM.
[SCMRequest] N/A

Change-Id: I80177ba3f4ed7cbd2a721519158fce9a7bd8fae8
---
 src/jobs/widget_install/widget_unzip.cpp | 94 +++++++++++++++++++++++++++++++-
 src/jobs/widget_install/widget_unzip.h   |  5 +-
 2 files changed, 95 insertions(+), 4 deletions(-)

diff --git a/src/jobs/widget_install/widget_unzip.cpp b/src/jobs/widget_install/widget_unzip.cpp
index df96243..5605ec2 100644
--- a/src/jobs/widget_install/widget_unzip.cpp
+++ b/src/jobs/widget_install/widget_unzip.cpp
@@ -30,10 +30,13 @@
 #include <dpl/wrt-dao-ro/global_config.h>
 #include <task_commons.h>
 #include <sys/stat.h>
+#include <dlfcn.h>
 
 using namespace WrtDB;
 
 namespace {
+const char *const DRM_LIB_PATH = "/usr/lib/libdrm-service-core-tizen.so";
+
 struct PathAndFilePair
 {
     std::string path;
@@ -145,10 +148,95 @@ void WidgetUnzip::unzipProgress(const std::string &destination)
     }
 }
 
-std::string WidgetUnzip::decryptDrmPackage(const std::string &source)
+bool WidgetUnzip::isDRMPackage(const std::string &source)
+{
+    LogDebug("Enter : isDRMPackage()");
+    int ret = 0;
+    void* pHandle = NULL;
+    char* pErrorMsg = NULL;
+    int (*drm_oem_sapps_is_drm_file)(const char* pDcfPath, int dcfPathLen);
+
+    pHandle = dlopen(DRM_LIB_PATH, RTLD_LAZY | RTLD_GLOBAL);
+    if (!pHandle) {
+        LogError("dlopen failed : " << source << " [" << dlerror() << "]");
+        return false;
+    }
+
+    drm_oem_sapps_is_drm_file = reinterpret_cast <int (*)(const char*, int)>
+        (dlsym(pHandle, "drm_oem_sapps_is_drm_file"));
+    pErrorMsg = dlerror();
+    if ((pErrorMsg != NULL) || (drm_oem_sapps_is_drm_file == NULL)) {
+        LogError("dlopen failed : " << source << " [" << dlerror() << "]");
+        dlclose(pHandle);
+        return false;
+    }
+
+    ret = drm_oem_sapps_is_drm_file(source.c_str(), source.length());
+    dlclose(pHandle);
+    if (1 == ret) {
+        LogInfo(source << " is DRM file");
+        return true;
+    }
+    LogInfo(source << " isn't DRM file");
+    return false;
+}
+
+bool WidgetUnzip::decryptDRMPackage(const std::string &source, const std::string
+        &decryptedSource)
+{
+    LogDebug("Enter : decryptDRMPackage()");
+    int ret = 0;
+    void* pHandle = NULL;
+    char* pErrorMsg = NULL;
+    int (*drm_oem_sapps_decrypt_package)(const char* pDcfPath, int dcfPathLen,
+            const char* pDecryptedFile, int decryptedFileLen);
+
+    pHandle = dlopen(DRM_LIB_PATH, RTLD_LAZY | RTLD_GLOBAL);
+    if (!pHandle) {
+        LogError("dlopen failed : " << source << " [" << dlerror() << "]");
+        return false;
+    }
+
+    drm_oem_sapps_decrypt_package = reinterpret_cast <int (*)(const char*, int,
+            const char*, int)>
+        (dlsym(pHandle, "drm_oem_sapps_decrypt_package"));
+    pErrorMsg = dlerror();
+    if ((pErrorMsg != NULL) || (drm_oem_sapps_decrypt_package == NULL)) {
+        LogError("dlopen failed : " << source << " [" << dlerror() << "]");
+        dlclose(pHandle);
+        return false;
+    }
+
+    ret = drm_oem_sapps_decrypt_package(source.c_str(), source.length(),
+            decryptedSource.c_str(), decryptedSource.length());
+    dlclose(pHandle);
+    if (1 == ret) {
+        LogInfo(source << " is decrypted : " << decryptedSource);
+        return true;
+    }
+    return false;
+}
+
+std::string WidgetUnzip::getDecryptedPackage(const std::string &source)
 {
     LogInfo("Check DRM...");
-    // TODO : check drm
+    if (isDRMPackage(source)) {
+        std::string decryptedFile;
+        size_t found = source.find_last_of(".wgt");
+        if (found == std::string::npos) {
+            decryptedFile += source + "_tmp.wgt";
+        } else {
+            decryptedFile += source.substr(0, source.find_last_not_of(".wgt") +
+                    1) + "_tmp.wgt";
+        }
+
+        LogDebug("decrypted file name : " << decryptedFile);
+        if (decryptDRMPackage(source, decryptedFile)) {
+            LogError("Failed decrypt drm file");
+            ThrowMsg(Exceptions::DrmDecryptFailed, source);
+        }
+        return decryptedFile;
+    }
     return source;
 }
 
@@ -158,7 +246,7 @@ void WidgetUnzip::unzipWgtFile(const std::string &source, const std::string &des
     std::string wgtFile;
     Try
     {
-        wgtFile = decryptDrmPackage(source);
+        wgtFile = getDecryptedPackage(source);
         LogDebug("wgtFile : " << wgtFile);
 
         m_zip.reset(new DPL::ZipInput(wgtFile));
diff --git a/src/jobs/widget_install/widget_unzip.h b/src/jobs/widget_install/widget_unzip.h
index 77a0b57..25e1293 100644
--- a/src/jobs/widget_install/widget_unzip.h
+++ b/src/jobs/widget_install/widget_unzip.h
@@ -41,7 +41,10 @@ class WidgetUnzip
     void unzipProgress(const std::string &destination);
     void ExtractFile(DPL::ZipInput::File *input, const std::string
             &destFileName);
-    std::string decryptDrmPackage(const std::string &source);
+    bool isDRMPackage(const std::string &source);
+    bool decryptDRMPackage(const std::string &source, const std::string
+            &decryptedSource);
+    std::string getDecryptedPackage(const std::string &source);
 
 };
 
-- 
2.7.4