Add MD_OS_ANDROID definition.

In order to better distinguish Android and Linux minidumps, introduce
a new MD_OS_ANDROID definition, and modify related source code accordingly.

Also append the build-fingerprint to the minidump location descriptor.
This gives more information about the system image the device runs on.
Review URL: https://breakpad.appspot.com/405002

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@981 4c0a9323-5329-0410-9bdc-e9ce6186880e

src/client/linux/minidump_writer/minidump_writer.cc

@@ -53,6 +53,9 @@
 #include <link.h>
 #endif
 #include <stdio.h>
+#if defined(__ANDROID__)
+#include <sys/system_properties.h>
+#endif
 #if !defined(__ANDROID__)
 #include <sys/ucontext.h>
 #include <sys/user.h>
@@ -1246,7 +1249,11 @@ class MinidumpWriter {
   }
 
   bool WriteOSInformation(MDRawSystemInfo* sys_info) {
+#if defined(__ANDROID__)
+    sys_info->platform_id = MD_OS_ANDROID;
+#else
     sys_info->platform_id = MD_OS_LINUX;
+#endif
 
     struct utsname uts;
     if (uname(&uts))
@@ -1283,6 +1290,23 @@ class MinidumpWriter {
       space_left -= info_len;
     }
 
+#ifdef __ANDROID__
+    // On Android, try to get the build fingerprint and append it.
+    // Fail gracefully because there is no guarantee that the system
+    // property will always be available or accessible.
+    char fingerprint[PROP_VALUE_MAX];
+    int fingerprint_len = __system_property_get("ro.build.fingerprint",
+                                                fingerprint);
+    // System property values shall always be zero-terminated.
+    // Be paranoid and don't trust the system.
+    if (fingerprint_len > 0 && fingerprint_len < PROP_VALUE_MAX) {
+      const char* separator = " ";
+      if (!first_item)
+        strlcat(buf, separator, buf_len);
+      strlcat(buf, fingerprint, buf_len);
+    }
+#endif
+
     MDLocationDescriptor location;
     if (!minidump_writer_.WriteString(buf, 0, &location))
       return false;

src/google_breakpad/common/minidump_format.h

@@ -611,7 +611,8 @@ typedef enum {
   MD_OS_MAC_OS_X      = 0x8101,  /* Mac OS X/Darwin */
   MD_OS_IOS           = 0x8102,  /* iOS */
   MD_OS_LINUX         = 0x8201,  /* Linux */
-  MD_OS_SOLARIS       = 0x8202   /* Solaris */
+  MD_OS_SOLARIS       = 0x8202,  /* Solaris */
+  MD_OS_ANDROID       = 0x8203   /* Android */
 } MDOSPlatform;
 
 

src/processor/exploitability.cc

@@ -79,6 +79,7 @@ Exploitability *Exploitability::ExploitabilityForPlatform(
     case MD_OS_LINUX:
     case MD_OS_UNIX:
     case MD_OS_SOLARIS:
+    case MD_OS_ANDROID:
     default: {
       platform_exploitability = NULL;
       break;

src/processor/minidump.cc

@@ -1760,6 +1760,7 @@ string MinidumpModule::code_identifier() const {
     case MD_OS_MAC_OS_X:
     case MD_OS_IOS:
     case MD_OS_SOLARIS:
+    case MD_OS_ANDROID:
     case MD_OS_LINUX: {
       // TODO(mmentovai): support uuid extension if present, otherwise fall
       // back to version (from LC_ID_DYLIB?), otherwise fall back to something
@@ -3108,6 +3109,10 @@ string MinidumpSystemInfo::GetOS() {
       os = "solaris";
       break;
 
+    case MD_OS_ANDROID:
+      os = "android";
+      break;
+
     default:
       BPLOG(ERROR) << "MinidumpSystemInfo unknown OS for platform " <<
                       HexString(system_info_.platform_id);

src/processor/minidump_processor.cc

@@ -401,6 +401,11 @@ bool MinidumpProcessor::GetOSInfo(Minidump *dump, SystemInfo *info) {
       break;
     }
 
+    case MD_OS_ANDROID: {
+      info->os = "Android";
+      break;
+    }
+
     default: {
       // Assign the numeric platform ID into the OS string.
       char os_string[11];
@@ -838,6 +843,7 @@ string MinidumpProcessor::GetCrashReason(Minidump *dump, u_int64_t *address) {
       break;
     }
 
+    case MD_OS_ANDROID:
     case MD_OS_LINUX: {
       switch (exception_code) {
         case MD_EXCEPTION_CODE_LIN_SIGHUP: