From 315d1368a7f38071b7ff79dd813a07ea9d157a30 Mon Sep 17 00:00:00 2001
From: Evan Bernstein <bernsteine@google.com>
Date: Thu, 4 Oct 2018 14:46:45 -0700
Subject: Adds method to get the date of the most recent iOS crash report.

Also adds method to determine if breakpad is started.

Change-Id: I272765e7ac6bbc07d77ca2d8dcc34d51c205116e
Reviewed-on: https://chromium-review.googlesource.com/c/1260625
Reviewed-by: Joshua Peraza <jperaza@chromium.org>
---
 src/client/ios/Breakpad.mm | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

(limited to 'src/client/ios/Breakpad.mm')

diff --git a/src/client/ios/Breakpad.mm b/src/client/ios/Breakpad.mm
index c2a4202a..d7dc78c6 100644
--- a/src/client/ios/Breakpad.mm
+++ b/src/client/ios/Breakpad.mm
@@ -161,6 +161,7 @@ class Breakpad {
   NSArray *CrashReportsToUpload();
   NSString *NextCrashReportToUpload();
   NSDictionary *NextCrashReportConfiguration();
+  NSDate *DateOfMostRecentCrashReport();
   void UploadNextReport(NSDictionary *server_parameters);
   void UploadReportWithConfiguration(NSDictionary *configuration,
                                      NSDictionary *server_parameters);
@@ -467,6 +468,30 @@ NSDictionary *Breakpad::NextCrashReportConfiguration() {
   return [Uploader readConfigurationDataFromFile:NextCrashReportToUpload()];
 }
 
+//=============================================================================
+NSDate *Breakpad::DateOfMostRecentCrashReport() {
+  NSString *directory = KeyValue(@BREAKPAD_DUMP_DIRECTORY);
+  if (!directory) {
+    return nil;
+  }
+  NSFileManager *fileManager = [NSFileManager defaultManager];
+  NSArray *dirContents = [fileManager contentsOfDirectoryAtPath:directory error:nil];
+  NSArray *dumps = [dirContents filteredArrayUsingPredicate:[NSPredicate
+      predicateWithFormat:@"self ENDSWITH '.dmp'"]];
+  NSDate *mostRecentCrashReportDate = nil;
+  for (NSString *dump in dumps) {
+    NSString *filePath = [directory stringByAppendingPathComponent:dump];
+    NSDate *crashReportDate =
+        [[fileManager attributesOfItemAtPath:filePath error:nil] fileCreationDate];
+    if (!mostRecentCrashReportDate) {
+      mostRecentCrashReportDate = crashReportDate;
+    } else if (crashReportDate) {
+      mostRecentCrashReportDate = [mostRecentCrashReportDate laterDate:crashReportDate];
+    }
+  }
+  return mostRecentCrashReportDate;
+}
+
 //=============================================================================
 void Breakpad::HandleNetworkResponse(NSDictionary *configuration,
                                      NSData *data,
@@ -840,6 +865,19 @@ NSDictionary *BreakpadGetNextReportConfiguration(BreakpadRef ref) {
   return nil;
 }
 
+//=============================================================================
+NSDate *BreakpadGetDateOfMostRecentCrashReport(BreakpadRef ref) {
+  try {
+    Breakpad *breakpad = (Breakpad *)ref;
+    if (breakpad) {
+      return breakpad->DateOfMostRecentCrashReport();
+    }
+  } catch (...) {    // don't let exceptions leave this C API
+    fprintf(stderr, "BreakpadGetDateOfMostRecentCrashReport() : error\n");
+  }
+  return nil;
+}
+
 //=============================================================================
 void BreakpadUploadReportWithParametersAndConfiguration(
     BreakpadRef ref,
-- 
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