crash_collector.cc revision 731da3379bd7ead7222b1a7add45e307bec7c865
1f70060c5e610ed0aa648dcb6aaea5d859834b8baSimon Que// Copyright (c) 2012 The Chromium OS Authors. All rights reserved. 20340316050044e0995b98fea87ed41ea77abb28bKen Mixter// Use of this source code is governed by a BSD-style license that can be 30340316050044e0995b98fea87ed41ea77abb28bKen Mixter// found in the LICENSE file. 40340316050044e0995b98fea87ed41ea77abb28bKen Mixter 50340316050044e0995b98fea87ed41ea77abb28bKen Mixter#include "crash-reporter/crash_collector.h" 60340316050044e0995b98fea87ed41ea77abb28bKen Mixter 704ec10fc93b08057657503559ecf511661b55c9fKen Mixter#include <dirent.h> 89b346474538a255bc7144ae358bb0ee129163d58Ken Mixter#include <fcntl.h> // For file creation modes. 97589aff9f0410512168914bda2d7640649858066Alex Vakulenko#define __STDC_FORMAT_MACROS // PRId64 107589aff9f0410512168914bda2d7640649858066Alex Vakulenko#include <inttypes.h> 11f3811f50c8783b24607c776844a3cf66c15c439fBen Chan#include <linux/limits.h> // PATH_MAX 120340316050044e0995b98fea87ed41ea77abb28bKen Mixter#include <pwd.h> // For struct passwd. 130340316050044e0995b98fea87ed41ea77abb28bKen Mixter#include <sys/types.h> // for mode_t. 149b346474538a255bc7144ae358bb0ee129163d58Ken Mixter#include <sys/wait.h> // For waitpid. 159b346474538a255bc7144ae358bb0ee129163d58Ken Mixter#include <unistd.h> // For execv and fork. 160340316050044e0995b98fea87ed41ea77abb28bKen Mixter 17ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter#include <set> 187e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <utility> 19f70060c5e610ed0aa648dcb6aaea5d859834b8baSimon Que#include <vector> 20ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter 21f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger#include <dbus/dbus-glib-lowlevel.h> 22f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger#include <glib.h> 23f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 24ab6cc90503ca2db976a3cb9c9382a9da85c4b5a2Ben Chan#include <base/files/file_util.h> 257e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <base/logging.h> 267e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <base/posix/eintr_wrapper.h> 277e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <base/strings/string_split.h> 287e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <base/strings/string_util.h> 297e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <base/strings/stringprintf.h> 307e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <chromeos/cryptohome.h> 317e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <chromeos/dbus/dbus.h> 327e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <chromeos/dbus/service_constants.h> 33731da3379bd7ead7222b1a7add45e307bec7c865Daniel Erat#include <chromeos/key_value_store.h> 347e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <chromeos/process.h> 350340316050044e0995b98fea87ed41ea77abb28bKen Mixter 36731da3379bd7ead7222b1a7add45e307bec7c865Daniel Eratnamespace { 37731da3379bd7ead7222b1a7add45e307bec7c865Daniel Erat 38731da3379bd7ead7222b1a7add45e307bec7c865Daniel Eratconst char kCollectChromeFile[] = 394fe30db1405498dd21162436eda081486f400fa8Michael Krebs "/mnt/stateful_partition/etc/collect_chrome_crashes"; 40731da3379bd7ead7222b1a7add45e307bec7c865Daniel Eratconst char kCrashTestInProgressPath[] = "/tmp/crash-test-in-progress"; 41731da3379bd7ead7222b1a7add45e307bec7c865Daniel Eratconst char kDefaultLogConfig[] = "/etc/crash_reporter_logs.conf"; 42731da3379bd7ead7222b1a7add45e307bec7c865Daniel Eratconst char kDefaultUserName[] = "chronos"; 43731da3379bd7ead7222b1a7add45e307bec7c865Daniel Eratconst char kLeaveCoreFile[] = "/root/.leave_core"; 44731da3379bd7ead7222b1a7add45e307bec7c865Daniel Eratconst char kLsbRelease[] = "/etc/lsb-release"; 45731da3379bd7ead7222b1a7add45e307bec7c865Daniel Eratconst char kShellPath[] = "/bin/sh"; 46731da3379bd7ead7222b1a7add45e307bec7c865Daniel Eratconst char kSystemCrashPath[] = "/var/spool/crash"; 47731da3379bd7ead7222b1a7add45e307bec7c865Daniel Eratconst char kUploadVarPrefix[] = "upload_var_"; 48731da3379bd7ead7222b1a7add45e307bec7c865Daniel Eratconst char kUploadFilePrefix[] = "upload_file_"; 49731da3379bd7ead7222b1a7add45e307bec7c865Daniel Erat 50731da3379bd7ead7222b1a7add45e307bec7c865Daniel Erat// Key of the lsb-release entry containing the OS version. 51731da3379bd7ead7222b1a7add45e307bec7c865Daniel Eratconst char kLsbVersionKey[] = "CHROMEOS_RELEASE_VERSION"; 52731da3379bd7ead7222b1a7add45e307bec7c865Daniel Erat 53f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// Normally this path is not used. Unfortunately, there are a few edge cases 54f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// where we need this. Any process that runs as kDefaultUserName that crashes 55f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// is consider a "user crash". That includes the initial Chrome browser that 56f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// runs the login screen. If that blows up, there is no logged in user yet, 57f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// so there is no per-user dir for us to stash things in. Instead we fallback 58f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// to this path as it is at least encrypted on a per-system basis. 59f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// 60f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// This also comes up when running autotests. The GUI is sitting at the login 61f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// screen while tests are sshing in, changing users, and triggering crashes as 62f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// the user (purposefully). 63731da3379bd7ead7222b1a7add45e307bec7c865Daniel Eratconst char kFallbackUserCrashPath[] = "/home/chronos/crash"; 640340316050044e0995b98fea87ed41ea77abb28bKen Mixter 650340316050044e0995b98fea87ed41ea77abb28bKen Mixter// Directory mode of the user crash spool directory. 66731da3379bd7ead7222b1a7add45e307bec7c865Daniel Eratconst mode_t kUserCrashPathMode = 0755; 670340316050044e0995b98fea87ed41ea77abb28bKen Mixter 680340316050044e0995b98fea87ed41ea77abb28bKen Mixter// Directory mode of the system crash spool directory. 69731da3379bd7ead7222b1a7add45e307bec7c865Daniel Eratconst mode_t kSystemCrashPathMode = 01755; 70731da3379bd7ead7222b1a7add45e307bec7c865Daniel Erat 71731da3379bd7ead7222b1a7add45e307bec7c865Daniel Eratconst uid_t kRootOwner = 0; 72731da3379bd7ead7222b1a7add45e307bec7c865Daniel Eratconst uid_t kRootGroup = 0; 730340316050044e0995b98fea87ed41ea77abb28bKen Mixter 74731da3379bd7ead7222b1a7add45e307bec7c865Daniel Erat} // namespace 750340316050044e0995b98fea87ed41ea77abb28bKen Mixter 76da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// Maximum crash reports per crash spool directory. Note that this is 77da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// a separate maximum from the maximum rate at which we upload these 78da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// diagnostics. The higher this rate is, the more space we allow for 79da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// core files, minidumps, and kcrash logs, and equivalently the more 80da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// processor and I/O bandwidth we dedicate to handling these crashes when 81da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// many occur at once. Also note that if core files are configured to 82da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// be left on the file system, we stop adding crashes when either the 83da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// number of core files or minidumps reaches this number. 84da5db7a8304e22af6c57733460516857e9211b32Ken Mixterconst int CrashCollector::kMaxCrashDirectorySize = 32; 8504ec10fc93b08057657503559ecf511661b55c9fKen Mixter 869f90acaa4d420530d7b4ddd37112518df68e373aSimon Queusing base::FilePath; 87a557c1187ff19d422db2a9c951ecd8f7243e79bdMike Frysingerusing base::StringPrintf; 889f90acaa4d420530d7b4ddd37112518df68e373aSimon Que 89afcf80821c57a189b53b7a66f76d13855d63821eKen MixterCrashCollector::CrashCollector() 909b1f300139689eb9c7b7a35e91a4fbc1eab93b4eLei Zhang : lsb_release_(kLsbRelease), 91acc7938ede0e3c07a2d1809f82b174b51f7ab7c5Simon Que log_config_path_(kDefaultLogConfig) { 920340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 930340316050044e0995b98fea87ed41ea77abb28bKen Mixter 940340316050044e0995b98fea87ed41ea77abb28bKen MixterCrashCollector::~CrashCollector() { 950340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 960340316050044e0995b98fea87ed41ea77abb28bKen Mixter 970340316050044e0995b98fea87ed41ea77abb28bKen Mixtervoid CrashCollector::Initialize( 980340316050044e0995b98fea87ed41ea77abb28bKen Mixter CrashCollector::CountCrashFunction count_crash_function, 99a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter CrashCollector::IsFeedbackAllowedFunction is_feedback_allowed_function) { 100262d798b380a59ef691ede4c6a32aa71ff191295Ben Chan CHECK(count_crash_function); 101262d798b380a59ef691ede4c6a32aa71ff191295Ben Chan CHECK(is_feedback_allowed_function); 1020340316050044e0995b98fea87ed41ea77abb28bKen Mixter 1030340316050044e0995b98fea87ed41ea77abb28bKen Mixter count_crash_function_ = count_crash_function; 1040340316050044e0995b98fea87ed41ea77abb28bKen Mixter is_feedback_allowed_function_ = is_feedback_allowed_function; 1050340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 1060340316050044e0995b98fea87ed41ea77abb28bKen Mixter 1079b346474538a255bc7144ae358bb0ee129163d58Ken Mixterint CrashCollector::WriteNewFile(const FilePath &filename, 1089b346474538a255bc7144ae358bb0ee129163d58Ken Mixter const char *data, 1099b346474538a255bc7144ae358bb0ee129163d58Ken Mixter int size) { 1109b346474538a255bc7144ae358bb0ee129163d58Ken Mixter int fd = HANDLE_EINTR(open(filename.value().c_str(), 1119b346474538a255bc7144ae358bb0ee129163d58Ken Mixter O_CREAT | O_WRONLY | O_TRUNC | O_EXCL, 0666)); 1129b346474538a255bc7144ae358bb0ee129163d58Ken Mixter if (fd < 0) { 1139b346474538a255bc7144ae358bb0ee129163d58Ken Mixter return -1; 1149b346474538a255bc7144ae358bb0ee129163d58Ken Mixter } 1159b346474538a255bc7144ae358bb0ee129163d58Ken Mixter 116859ee45cd2d9feb5e937c0c06f9e6c230979136eAlex Vakulenko int rv = base::WriteFileDescriptor(fd, data, size) ? size : -1; 117f1a5014637180457af21cc40a5ca64ab18a6947bMike Frysinger IGNORE_EINTR(close(fd)); 1189b346474538a255bc7144ae358bb0ee129163d58Ken Mixter return rv; 1199b346474538a255bc7144ae358bb0ee129163d58Ken Mixter} 1209b346474538a255bc7144ae358bb0ee129163d58Ken Mixter 121ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixterstd::string CrashCollector::Sanitize(const std::string &name) { 1229895096f8b8046456bec96292f9c547b11913248Thiemo Nagel // Make sure the sanitized name does not include any periods. 1239895096f8b8046456bec96292f9c547b11913248Thiemo Nagel // The logic in crash_sender relies on this. 124ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::string result = name; 125ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter for (size_t i = 0; i < name.size(); ++i) { 126ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter if (!isalnum(result[i]) && result[i] != '_') 127ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter result[i] = '_'; 128ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 129ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter return result; 130ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter} 131ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter 1320340316050044e0995b98fea87ed41ea77abb28bKen Mixterstd::string CrashCollector::FormatDumpBasename(const std::string &exec_name, 1330340316050044e0995b98fea87ed41ea77abb28bKen Mixter time_t timestamp, 1340340316050044e0995b98fea87ed41ea77abb28bKen Mixter pid_t pid) { 1350340316050044e0995b98fea87ed41ea77abb28bKen Mixter struct tm tm; 1360340316050044e0995b98fea87ed41ea77abb28bKen Mixter localtime_r(×tamp, &tm); 137ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::string sanitized_exec_name = Sanitize(exec_name); 1380340316050044e0995b98fea87ed41ea77abb28bKen Mixter return StringPrintf("%s.%04d%02d%02d.%02d%02d%02d.%d", 139ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter sanitized_exec_name.c_str(), 1400340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_year + 1900, 1410340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_mon + 1, 1420340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_mday, 1430340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_hour, 1440340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_min, 1450340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_sec, 1460340316050044e0995b98fea87ed41ea77abb28bKen Mixter pid); 1470340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 1480340316050044e0995b98fea87ed41ea77abb28bKen Mixter 149207694d3f491ef602a859c30cc1379584f2d61cfKen MixterFilePath CrashCollector::GetCrashPath(const FilePath &crash_directory, 150207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter const std::string &basename, 151207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter const std::string &extension) { 152207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter return crash_directory.Append(StringPrintf("%s.%s", 153207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter basename.c_str(), 154207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter extension.c_str())); 155207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter} 156207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter 157f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysingernamespace { 158f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 159f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysingerconst char *GetGErrorMessage(const GError *error) { 160f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger if (!error) 161f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return "Unknown error."; 162f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return error->message; 163f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger} 164f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 165f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger} 166f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 167efec0b3625f447995d2ed79b946d2929039313c9Ben ChanGHashTable *CrashCollector::GetActiveUserSessions() { 168262d798b380a59ef691ede4c6a32aa71ff191295Ben Chan GHashTable *active_sessions = nullptr; 169f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 170f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger chromeos::dbus::BusConnection dbus = chromeos::dbus::GetSystemBusConnection(); 171f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger if (!dbus.HasConnection()) { 172f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger LOG(ERROR) << "Error connecting to system D-Bus"; 173f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return active_sessions; 174f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger } 175f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger chromeos::dbus::Proxy proxy(dbus, 176f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger login_manager::kSessionManagerServiceName, 177f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger login_manager::kSessionManagerServicePath, 178f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger login_manager::kSessionManagerInterface); 179f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger if (!proxy) { 180f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger LOG(ERROR) << "Error creating D-Bus proxy to interface " 181f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger << "'" << login_manager::kSessionManagerServiceName << "'"; 182f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return active_sessions; 183f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger } 184f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 185f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger // Request all the active sessions. 186262d798b380a59ef691ede4c6a32aa71ff191295Ben Chan GError *gerror = nullptr; 187f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger if (!dbus_g_proxy_call(proxy.gproxy(), 188f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger login_manager::kSessionManagerRetrieveActiveSessions, 189f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger &gerror, G_TYPE_INVALID, 190f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger DBUS_TYPE_G_STRING_STRING_HASHTABLE, &active_sessions, 191f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger G_TYPE_INVALID)) { 192f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger LOG(ERROR) << "Error performing D-Bus proxy call " 193f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger << "'" 194f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger << login_manager::kSessionManagerRetrieveActiveSessions << "'" 195f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger << ": " << GetGErrorMessage(gerror); 196f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return active_sessions; 197f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger } 198f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 199f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return active_sessions; 200f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger} 201f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 202efec0b3625f447995d2ed79b946d2929039313c9Ben ChanFilePath CrashCollector::GetUserCrashPath() { 203f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger // In this multiprofile world, there is no one-specific user dir anymore. 204f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger // Ask the session manager for the active ones, then just run with the 205f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger // first result we get back. 206f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger FilePath user_path = FilePath(kFallbackUserCrashPath); 207f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger GHashTable *active_sessions = GetActiveUserSessions(); 208f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger if (!active_sessions) 209f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return user_path; 210f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 211f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger GList *list = g_hash_table_get_values(active_sessions); 212f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger if (list) { 213f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger const char *salted_path = static_cast<const char *>(list->data); 21437843a9f8a46cd5afa57505bdb6d75aa1a75c9d2Mike Frysinger user_path = chromeos::cryptohome::home::GetHashedUserPath(salted_path) 21537843a9f8a46cd5afa57505bdb6d75aa1a75c9d2Mike Frysinger .Append("crash"); 216f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger g_list_free(list); 217f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger } 218f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 219f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger g_hash_table_destroy(active_sessions); 220f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 221f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return user_path; 222f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger} 223f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 2240340316050044e0995b98fea87ed41ea77abb28bKen MixterFilePath CrashCollector::GetCrashDirectoryInfo( 2250340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t process_euid, 2260340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t default_user_id, 2270340316050044e0995b98fea87ed41ea77abb28bKen Mixter gid_t default_user_group, 2280340316050044e0995b98fea87ed41ea77abb28bKen Mixter mode_t *mode, 2290340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t *directory_owner, 2300340316050044e0995b98fea87ed41ea77abb28bKen Mixter gid_t *directory_group) { 2314fe30db1405498dd21162436eda081486f400fa8Michael Krebs // TODO(mkrebs): This can go away once Chrome crashes are handled 2324fe30db1405498dd21162436eda081486f400fa8Michael Krebs // normally (see crosbug.com/5872). 2334fe30db1405498dd21162436eda081486f400fa8Michael Krebs // Check if the user crash directory should be used. If we are 2344fe30db1405498dd21162436eda081486f400fa8Michael Krebs // collecting chrome crashes during autotesting, we want to put them in 2354fe30db1405498dd21162436eda081486f400fa8Michael Krebs // the system crash directory so they are outside the cryptohome -- in 2364fe30db1405498dd21162436eda081486f400fa8Michael Krebs // case we are being run during logout (see crosbug.com/18637). 2374fe30db1405498dd21162436eda081486f400fa8Michael Krebs if (process_euid == default_user_id && IsUserSpecificDirectoryEnabled()) { 2380340316050044e0995b98fea87ed41ea77abb28bKen Mixter *mode = kUserCrashPathMode; 2390340316050044e0995b98fea87ed41ea77abb28bKen Mixter *directory_owner = default_user_id; 2400340316050044e0995b98fea87ed41ea77abb28bKen Mixter *directory_group = default_user_group; 241f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return GetUserCrashPath(); 2420340316050044e0995b98fea87ed41ea77abb28bKen Mixter } else { 2430340316050044e0995b98fea87ed41ea77abb28bKen Mixter *mode = kSystemCrashPathMode; 2440340316050044e0995b98fea87ed41ea77abb28bKen Mixter *directory_owner = kRootOwner; 2450340316050044e0995b98fea87ed41ea77abb28bKen Mixter *directory_group = kRootGroup; 2460340316050044e0995b98fea87ed41ea77abb28bKen Mixter return FilePath(kSystemCrashPath); 2470340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 2480340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 2490340316050044e0995b98fea87ed41ea77abb28bKen Mixter 2500340316050044e0995b98fea87ed41ea77abb28bKen Mixterbool CrashCollector::GetUserInfoFromName(const std::string &name, 2510340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t *uid, 2520340316050044e0995b98fea87ed41ea77abb28bKen Mixter gid_t *gid) { 2530340316050044e0995b98fea87ed41ea77abb28bKen Mixter char storage[256]; 2540340316050044e0995b98fea87ed41ea77abb28bKen Mixter struct passwd passwd_storage; 255262d798b380a59ef691ede4c6a32aa71ff191295Ben Chan struct passwd *passwd_result = nullptr; 2560340316050044e0995b98fea87ed41ea77abb28bKen Mixter 2570340316050044e0995b98fea87ed41ea77abb28bKen Mixter if (getpwnam_r(name.c_str(), &passwd_storage, storage, sizeof(storage), 258262d798b380a59ef691ede4c6a32aa71ff191295Ben Chan &passwd_result) != 0 || passwd_result == nullptr) { 259a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Cannot find user named " << name; 2600340316050044e0995b98fea87ed41ea77abb28bKen Mixter return false; 2610340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 2620340316050044e0995b98fea87ed41ea77abb28bKen Mixter 2630340316050044e0995b98fea87ed41ea77abb28bKen Mixter *uid = passwd_result->pw_uid; 2640340316050044e0995b98fea87ed41ea77abb28bKen Mixter *gid = passwd_result->pw_gid; 2650340316050044e0995b98fea87ed41ea77abb28bKen Mixter return true; 2660340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 2670340316050044e0995b98fea87ed41ea77abb28bKen Mixter 2680340316050044e0995b98fea87ed41ea77abb28bKen Mixterbool CrashCollector::GetCreatedCrashDirectoryByEuid(uid_t euid, 269207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter FilePath *crash_directory, 270207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter bool *out_of_capacity) { 2710340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t default_user_id; 2720340316050044e0995b98fea87ed41ea77abb28bKen Mixter gid_t default_user_group; 2730340316050044e0995b98fea87ed41ea77abb28bKen Mixter 274262d798b380a59ef691ede4c6a32aa71ff191295Ben Chan if (out_of_capacity) *out_of_capacity = false; 275207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter 2760340316050044e0995b98fea87ed41ea77abb28bKen Mixter // For testing. 2779b1f300139689eb9c7b7a35e91a4fbc1eab93b4eLei Zhang if (!forced_crash_directory_.empty()) { 2789b1f300139689eb9c7b7a35e91a4fbc1eab93b4eLei Zhang *crash_directory = forced_crash_directory_; 2790340316050044e0995b98fea87ed41ea77abb28bKen Mixter return true; 2800340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 2810340316050044e0995b98fea87ed41ea77abb28bKen Mixter 2820340316050044e0995b98fea87ed41ea77abb28bKen Mixter if (!GetUserInfoFromName(kDefaultUserName, 2830340316050044e0995b98fea87ed41ea77abb28bKen Mixter &default_user_id, 2840340316050044e0995b98fea87ed41ea77abb28bKen Mixter &default_user_group)) { 285a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Could not find default user info"; 2860340316050044e0995b98fea87ed41ea77abb28bKen Mixter return false; 2870340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 2880340316050044e0995b98fea87ed41ea77abb28bKen Mixter mode_t directory_mode; 2890340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t directory_owner; 2900340316050044e0995b98fea87ed41ea77abb28bKen Mixter gid_t directory_group; 2910340316050044e0995b98fea87ed41ea77abb28bKen Mixter *crash_directory = 2920340316050044e0995b98fea87ed41ea77abb28bKen Mixter GetCrashDirectoryInfo(euid, 2930340316050044e0995b98fea87ed41ea77abb28bKen Mixter default_user_id, 2940340316050044e0995b98fea87ed41ea77abb28bKen Mixter default_user_group, 2950340316050044e0995b98fea87ed41ea77abb28bKen Mixter &directory_mode, 2960340316050044e0995b98fea87ed41ea77abb28bKen Mixter &directory_owner, 2970340316050044e0995b98fea87ed41ea77abb28bKen Mixter &directory_group); 2980340316050044e0995b98fea87ed41ea77abb28bKen Mixter 299a557c1187ff19d422db2a9c951ecd8f7243e79bdMike Frysinger if (!base::PathExists(*crash_directory)) { 3000340316050044e0995b98fea87ed41ea77abb28bKen Mixter // Create the spool directory with the appropriate mode (regardless of 3010340316050044e0995b98fea87ed41ea77abb28bKen Mixter // umask) and ownership. 3020340316050044e0995b98fea87ed41ea77abb28bKen Mixter mode_t old_mask = umask(0); 3030340316050044e0995b98fea87ed41ea77abb28bKen Mixter if (mkdir(crash_directory->value().c_str(), directory_mode) < 0 || 3040340316050044e0995b98fea87ed41ea77abb28bKen Mixter chown(crash_directory->value().c_str(), 3050340316050044e0995b98fea87ed41ea77abb28bKen Mixter directory_owner, 3060340316050044e0995b98fea87ed41ea77abb28bKen Mixter directory_group) < 0) { 307a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Unable to create appropriate crash directory"; 3080340316050044e0995b98fea87ed41ea77abb28bKen Mixter return false; 3090340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 3100340316050044e0995b98fea87ed41ea77abb28bKen Mixter umask(old_mask); 3110340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 3120340316050044e0995b98fea87ed41ea77abb28bKen Mixter 313a557c1187ff19d422db2a9c951ecd8f7243e79bdMike Frysinger if (!base::PathExists(*crash_directory)) { 314a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Unable to create crash directory " 315a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter << crash_directory->value().c_str(); 3160340316050044e0995b98fea87ed41ea77abb28bKen Mixter return false; 3170340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 3180340316050044e0995b98fea87ed41ea77abb28bKen Mixter 31904ec10fc93b08057657503559ecf511661b55c9fKen Mixter if (!CheckHasCapacity(*crash_directory)) { 320262d798b380a59ef691ede4c6a32aa71ff191295Ben Chan if (out_of_capacity) *out_of_capacity = true; 32104ec10fc93b08057657503559ecf511661b55c9fKen Mixter return false; 32204ec10fc93b08057657503559ecf511661b55c9fKen Mixter } 32304ec10fc93b08057657503559ecf511661b55c9fKen Mixter 3240340316050044e0995b98fea87ed41ea77abb28bKen Mixter return true; 3250340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 32604ec10fc93b08057657503559ecf511661b55c9fKen Mixter 327426fcc0bd579a87102ea50fb570dbf9834fa2962Albert ChaulkFilePath CrashCollector::GetProcessPath(pid_t pid) { 328426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk return FilePath(StringPrintf("/proc/%d", pid)); 329426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk} 330426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk 331426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulkbool CrashCollector::GetSymlinkTarget(const FilePath &symlink, 3328563d20e108c3801f107d640c9b161f1099e6bebBen Chan FilePath *target) { 333f3811f50c8783b24607c776844a3cf66c15c439fBen Chan ssize_t max_size = 64; 334f3811f50c8783b24607c776844a3cf66c15c439fBen Chan std::vector<char> buffer; 335f3811f50c8783b24607c776844a3cf66c15c439fBen Chan 336426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk while (true) { 337f3811f50c8783b24607c776844a3cf66c15c439fBen Chan buffer.resize(max_size + 1); 338f3811f50c8783b24607c776844a3cf66c15c439fBen Chan ssize_t size = readlink(symlink.value().c_str(), buffer.data(), max_size); 339426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk if (size < 0) { 340426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk int saved_errno = errno; 341426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk LOG(ERROR) << "Readlink failed on " << symlink.value() << " with " 342426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk << saved_errno; 343426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk return false; 344426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } 345f3811f50c8783b24607c776844a3cf66c15c439fBen Chan 346426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk buffer[size] = 0; 347426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk if (size == max_size) { 348f3811f50c8783b24607c776844a3cf66c15c439fBen Chan max_size *= 2; 349f3811f50c8783b24607c776844a3cf66c15c439fBen Chan if (max_size > PATH_MAX) { 350426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk return false; 351426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } 352f3811f50c8783b24607c776844a3cf66c15c439fBen Chan continue; 353426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } 354426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk break; 355426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } 356426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk 357f3811f50c8783b24607c776844a3cf66c15c439fBen Chan *target = FilePath(buffer.data()); 358426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk return true; 359426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk} 360426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk 361426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulkbool CrashCollector::GetExecutableBaseNameFromPid(pid_t pid, 362426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk std::string *base_name) { 363426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk FilePath target; 364426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk FilePath process_path = GetProcessPath(pid); 365426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk FilePath exe_path = process_path.Append("exe"); 366426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk if (!GetSymlinkTarget(exe_path, &target)) { 367426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk LOG(INFO) << "GetSymlinkTarget failed - Path " << process_path.value() 368426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk << " DirectoryExists: " 369a557c1187ff19d422db2a9c951ecd8f7243e79bdMike Frysinger << base::DirectoryExists(process_path); 370426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk // Try to further diagnose exe readlink failure cause. 371426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk struct stat buf; 372426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk int stat_result = stat(exe_path.value().c_str(), &buf); 373426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk int saved_errno = errno; 374426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk if (stat_result < 0) { 375426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk LOG(INFO) << "stat " << exe_path.value() << " failed: " << stat_result 376426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk << " " << saved_errno; 377426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } else { 378426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk LOG(INFO) << "stat " << exe_path.value() << " succeeded: st_mode=" 379426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk << buf.st_mode; 380426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } 381426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk return false; 382426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } 383426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk *base_name = target.BaseName().value(); 384426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk return true; 385426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk} 386426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk 38704ec10fc93b08057657503559ecf511661b55c9fKen Mixter// Return true if the given crash directory has not already reached 38804ec10fc93b08057657503559ecf511661b55c9fKen Mixter// maximum capacity. 38904ec10fc93b08057657503559ecf511661b55c9fKen Mixterbool CrashCollector::CheckHasCapacity(const FilePath &crash_directory) { 39004ec10fc93b08057657503559ecf511661b55c9fKen Mixter DIR* dir = opendir(crash_directory.value().c_str()); 39104ec10fc93b08057657503559ecf511661b55c9fKen Mixter if (!dir) { 39204ec10fc93b08057657503559ecf511661b55c9fKen Mixter return false; 39304ec10fc93b08057657503559ecf511661b55c9fKen Mixter } 39404ec10fc93b08057657503559ecf511661b55c9fKen Mixter struct dirent ent_buf; 39504ec10fc93b08057657503559ecf511661b55c9fKen Mixter struct dirent* ent; 39604ec10fc93b08057657503559ecf511661b55c9fKen Mixter bool full = false; 397ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::set<std::string> basenames; 398262d798b380a59ef691ede4c6a32aa71ff191295Ben Chan while (readdir_r(dir, &ent_buf, &ent) == 0 && ent) { 39904ec10fc93b08057657503559ecf511661b55c9fKen Mixter if ((strcmp(ent->d_name, ".") == 0) || 40004ec10fc93b08057657503559ecf511661b55c9fKen Mixter (strcmp(ent->d_name, "..") == 0)) 40104ec10fc93b08057657503559ecf511661b55c9fKen Mixter continue; 40204ec10fc93b08057657503559ecf511661b55c9fKen Mixter 403ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::string filename(ent->d_name); 404ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter size_t last_dot = filename.rfind("."); 405ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::string basename; 406ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter // If there is a valid looking extension, use the base part of the 407ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter // name. If the only dot is the first byte (aka a dot file), treat 408ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter // it as unique to avoid allowing a directory full of dot files 409ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter // from accumulating. 410ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter if (last_dot != std::string::npos && last_dot != 0) 411ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter basename = filename.substr(0, last_dot); 412ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter else 413ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter basename = filename; 414ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter basenames.insert(basename); 41504ec10fc93b08057657503559ecf511661b55c9fKen Mixter 416ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter if (basenames.size() >= static_cast<size_t>(kMaxCrashDirectorySize)) { 417a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(WARNING) << "Crash directory " << crash_directory.value() 418a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter << " already full with " << kMaxCrashDirectorySize 419a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter << " pending reports"; 42004ec10fc93b08057657503559ecf511661b55c9fKen Mixter full = true; 42104ec10fc93b08057657503559ecf511661b55c9fKen Mixter break; 42204ec10fc93b08057657503559ecf511661b55c9fKen Mixter } 42304ec10fc93b08057657503559ecf511661b55c9fKen Mixter } 42404ec10fc93b08057657503559ecf511661b55c9fKen Mixter closedir(dir); 42504ec10fc93b08057657503559ecf511661b55c9fKen Mixter return !full; 42604ec10fc93b08057657503559ecf511661b55c9fKen Mixter} 427ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter 428c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixterbool CrashCollector::GetLogContents(const FilePath &config_path, 429c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter const std::string &exec_name, 430c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter const FilePath &output_file) { 431731da3379bd7ead7222b1a7add45e307bec7c865Daniel Erat chromeos::KeyValueStore store; 432731da3379bd7ead7222b1a7add45e307bec7c865Daniel Erat if (!store.Load(config_path)) { 433a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(INFO) << "Unable to read log configuration file " 434a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter << config_path.value(); 435c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter return false; 436c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter } 437c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter 438731da3379bd7ead7222b1a7add45e307bec7c865Daniel Erat std::string command; 439731da3379bd7ead7222b1a7add45e307bec7c865Daniel Erat if (!store.GetString(exec_name, &command)) 440c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter return false; 441c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter 442a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter chromeos::ProcessImpl diag_process; 443a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter diag_process.AddArg(kShellPath); 444731da3379bd7ead7222b1a7add45e307bec7c865Daniel Erat diag_process.AddStringOption("-c", command); 445a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter diag_process.RedirectOutput(output_file.value()); 446c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter 447731da3379bd7ead7222b1a7add45e307bec7c865Daniel Erat const int result = diag_process.Run(); 448a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter if (result != 0) { 449731da3379bd7ead7222b1a7add45e307bec7c865Daniel Erat LOG(INFO) << "Log command \"" << command << "\" exited with " << result; 450c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter return false; 451c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter } 452c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter return true; 453c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter} 454c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter 455afcf80821c57a189b53b7a66f76d13855d63821eKen Mixtervoid CrashCollector::AddCrashMetaData(const std::string &key, 456afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter const std::string &value) { 457afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter extra_metadata_.append(StringPrintf("%s=%s\n", key.c_str(), value.c_str())); 458afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter} 459afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter 46033dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulkvoid CrashCollector::AddCrashMetaUploadFile(const std::string &key, 46133dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk const std::string &path) { 46233dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk if (!path.empty()) 46333dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk AddCrashMetaData(kUploadFilePrefix + key, path); 46433dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk} 46533dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk 46633dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulkvoid CrashCollector::AddCrashMetaUploadData(const std::string &key, 46733dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk const std::string &value) { 46833dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk if (!value.empty()) 46933dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk AddCrashMetaData(kUploadVarPrefix + key, value); 47033dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk} 47133dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk 472ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixtervoid CrashCollector::WriteCrashMetaData(const FilePath &meta_path, 473c909b6944602bd6c1eb6d3c54ec41b1a4fc57b07Ken Mixter const std::string &exec_name, 474c909b6944602bd6c1eb6d3c54ec41b1a4fc57b07Ken Mixter const std::string &payload_path) { 475731da3379bd7ead7222b1a7add45e307bec7c865Daniel Erat chromeos::KeyValueStore store; 476731da3379bd7ead7222b1a7add45e307bec7c865Daniel Erat if (!store.Load(FilePath(lsb_release_))) { 477a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Problem parsing " << lsb_release_; 478ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter // Even though there was some failure, take as much as we could read. 479ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 480731da3379bd7ead7222b1a7add45e307bec7c865Daniel Erat 481ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::string version("unknown"); 482731da3379bd7ead7222b1a7add45e307bec7c865Daniel Erat if (!store.GetString(kLsbVersionKey, &version)) { 483731da3379bd7ead7222b1a7add45e307bec7c865Daniel Erat LOG(ERROR) << "Unable to read " << kLsbVersionKey << " from " 484731da3379bd7ead7222b1a7add45e307bec7c865Daniel Erat << lsb_release_; 485ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 486f84ea21aab3c1c6ef1f358534e5c437878675d74Ben Chan int64_t payload_size = -1; 487a557c1187ff19d422db2a9c951ecd8f7243e79bdMike Frysinger base::GetFileSize(FilePath(payload_path), &payload_size); 488afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter std::string meta_data = StringPrintf("%sexec_name=%s\n" 489ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter "ver=%s\n" 490207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter "payload=%s\n" 491eaf060c265f4cd84eb718b625b3670987e155a1bAlex Vakulenko "payload_size=%" PRId64 "\n" 492ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter "done=1\n", 493afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter extra_metadata_.c_str(), 494ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter exec_name.c_str(), 495c909b6944602bd6c1eb6d3c54ec41b1a4fc57b07Ken Mixter version.c_str(), 496207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter payload_path.c_str(), 497c909b6944602bd6c1eb6d3c54ec41b1a4fc57b07Ken Mixter payload_size); 498f30c641225e55055641ffe3fd679a96e44f34af6Ben Chan // We must use WriteNewFile instead of base::WriteFile as we 4999b346474538a255bc7144ae358bb0ee129163d58Ken Mixter // do not want to write with root access to a symlink that an attacker 5009b346474538a255bc7144ae358bb0ee129163d58Ken Mixter // might have created. 5019b346474538a255bc7144ae358bb0ee129163d58Ken Mixter if (WriteNewFile(meta_path, meta_data.c_str(), meta_data.size()) < 0) { 502a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Unable to write " << meta_path.value(); 503ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 504ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter} 5051652fb2cc2bc6d08ac3719fd3d90b43485d539feThieu Le 5061652fb2cc2bc6d08ac3719fd3d90b43485d539feThieu Lebool CrashCollector::IsCrashTestInProgress() { 507a557c1187ff19d422db2a9c951ecd8f7243e79bdMike Frysinger return base::PathExists(FilePath(kCrashTestInProgressPath)); 5081652fb2cc2bc6d08ac3719fd3d90b43485d539feThieu Le} 5094fe30db1405498dd21162436eda081486f400fa8Michael Krebs 5104fe30db1405498dd21162436eda081486f400fa8Michael Krebsbool CrashCollector::IsDeveloperImage() { 5114fe30db1405498dd21162436eda081486f400fa8Michael Krebs // If we're testing crash reporter itself, we don't want to special-case 5124fe30db1405498dd21162436eda081486f400fa8Michael Krebs // for developer images. 5134fe30db1405498dd21162436eda081486f400fa8Michael Krebs if (IsCrashTestInProgress()) 5144fe30db1405498dd21162436eda081486f400fa8Michael Krebs return false; 515a557c1187ff19d422db2a9c951ecd8f7243e79bdMike Frysinger return base::PathExists(FilePath(kLeaveCoreFile)); 5164fe30db1405498dd21162436eda081486f400fa8Michael Krebs} 5174fe30db1405498dd21162436eda081486f400fa8Michael Krebs 5184fe30db1405498dd21162436eda081486f400fa8Michael Krebsbool CrashCollector::ShouldHandleChromeCrashes() { 5194fe30db1405498dd21162436eda081486f400fa8Michael Krebs // If we're testing crash reporter itself, we don't want to allow an 5204fe30db1405498dd21162436eda081486f400fa8Michael Krebs // override for chrome crashes. And, let's be conservative and only 5214fe30db1405498dd21162436eda081486f400fa8Michael Krebs // allow an override for developer images. 5224fe30db1405498dd21162436eda081486f400fa8Michael Krebs if (!IsCrashTestInProgress() && IsDeveloperImage()) { 5234fe30db1405498dd21162436eda081486f400fa8Michael Krebs // Check if there's an override to indicate we should indeed collect 5244fe30db1405498dd21162436eda081486f400fa8Michael Krebs // chrome crashes. This allows the crashes to still be tracked when 5254fe30db1405498dd21162436eda081486f400fa8Michael Krebs // they occur in autotests. See "crosbug.com/17987". 526a557c1187ff19d422db2a9c951ecd8f7243e79bdMike Frysinger if (base::PathExists(FilePath(kCollectChromeFile))) 5274fe30db1405498dd21162436eda081486f400fa8Michael Krebs return true; 5284fe30db1405498dd21162436eda081486f400fa8Michael Krebs } 5294fe30db1405498dd21162436eda081486f400fa8Michael Krebs // We default to ignoring chrome crashes. 5304fe30db1405498dd21162436eda081486f400fa8Michael Krebs return false; 5314fe30db1405498dd21162436eda081486f400fa8Michael Krebs} 5324fe30db1405498dd21162436eda081486f400fa8Michael Krebs 5334fe30db1405498dd21162436eda081486f400fa8Michael Krebsbool CrashCollector::IsUserSpecificDirectoryEnabled() { 5344fe30db1405498dd21162436eda081486f400fa8Michael Krebs return !ShouldHandleChromeCrashes(); 5354fe30db1405498dd21162436eda081486f400fa8Michael Krebs} 536