crash_collector.cc revision f84ea21aab3c1c6ef1f358534e5c437878675d74
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> 110340316050044e0995b98fea87ed41ea77abb28bKen Mixter#include <pwd.h> // For struct passwd. 120340316050044e0995b98fea87ed41ea77abb28bKen Mixter#include <sys/types.h> // for mode_t. 139b346474538a255bc7144ae358bb0ee129163d58Ken Mixter#include <sys/wait.h> // For waitpid. 149b346474538a255bc7144ae358bb0ee129163d58Ken Mixter#include <unistd.h> // For execv and fork. 150340316050044e0995b98fea87ed41ea77abb28bKen Mixter 16ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter#include <set> 177e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <utility> 18f70060c5e610ed0aa648dcb6aaea5d859834b8baSimon Que#include <vector> 19ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter 20f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger#include <dbus/dbus-glib-lowlevel.h> 21f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger#include <glib.h> 22f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 237e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <base/file_util.h> 247e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <base/logging.h> 257e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <base/posix/eintr_wrapper.h> 267e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <base/strings/string_split.h> 277e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <base/strings/string_util.h> 287e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <base/strings/stringprintf.h> 297e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <chromeos/cryptohome.h> 307e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <chromeos/dbus/dbus.h> 317e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <chromeos/dbus/service_constants.h> 327e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <chromeos/process.h> 330340316050044e0995b98fea87ed41ea77abb28bKen Mixter 344fe30db1405498dd21162436eda081486f400fa8Michael Krebsstatic const char kCollectChromeFile[] = 354fe30db1405498dd21162436eda081486f400fa8Michael Krebs "/mnt/stateful_partition/etc/collect_chrome_crashes"; 364fe30db1405498dd21162436eda081486f400fa8Michael Krebsstatic const char kCrashTestInProgressPath[] = "/tmp/crash-test-in-progress"; 37f70060c5e610ed0aa648dcb6aaea5d859834b8baSimon Questatic const char kDefaultLogConfig[] = "/etc/crash_reporter_logs.conf"; 380340316050044e0995b98fea87ed41ea77abb28bKen Mixterstatic const char kDefaultUserName[] = "chronos"; 394fe30db1405498dd21162436eda081486f400fa8Michael Krebsstatic const char kLeaveCoreFile[] = "/root/.leave_core"; 40ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixterstatic const char kLsbRelease[] = "/etc/lsb-release"; 41c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixterstatic const char kShellPath[] = "/bin/sh"; 420340316050044e0995b98fea87ed41ea77abb28bKen Mixterstatic const char kSystemCrashPath[] = "/var/spool/crash"; 4333dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulkstatic const char kUploadVarPrefix[] = "upload_var_"; 4433dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulkstatic const char kUploadFilePrefix[] = "upload_file_"; 45f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// Normally this path is not used. Unfortunately, there are a few edge cases 46f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// where we need this. Any process that runs as kDefaultUserName that crashes 47f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// is consider a "user crash". That includes the initial Chrome browser that 48f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// runs the login screen. If that blows up, there is no logged in user yet, 49f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// so there is no per-user dir for us to stash things in. Instead we fallback 50f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// to this path as it is at least encrypted on a per-system basis. 51f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// 52f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// This also comes up when running autotests. The GUI is sitting at the login 53f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// screen while tests are sshing in, changing users, and triggering crashes as 54f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// the user (purposefully). 55f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysingerstatic const char kFallbackUserCrashPath[] = "/home/chronos/crash"; 560340316050044e0995b98fea87ed41ea77abb28bKen Mixter 570340316050044e0995b98fea87ed41ea77abb28bKen Mixter// Directory mode of the user crash spool directory. 580340316050044e0995b98fea87ed41ea77abb28bKen Mixterstatic const mode_t kUserCrashPathMode = 0755; 590340316050044e0995b98fea87ed41ea77abb28bKen Mixter 600340316050044e0995b98fea87ed41ea77abb28bKen Mixter// Directory mode of the system crash spool directory. 610340316050044e0995b98fea87ed41ea77abb28bKen Mixterstatic const mode_t kSystemCrashPathMode = 01755; 620340316050044e0995b98fea87ed41ea77abb28bKen Mixter 630340316050044e0995b98fea87ed41ea77abb28bKen Mixterstatic const uid_t kRootOwner = 0; 640340316050044e0995b98fea87ed41ea77abb28bKen Mixterstatic const uid_t kRootGroup = 0; 650340316050044e0995b98fea87ed41ea77abb28bKen Mixter 66da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// Maximum crash reports per crash spool directory. Note that this is 67da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// a separate maximum from the maximum rate at which we upload these 68da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// diagnostics. The higher this rate is, the more space we allow for 69da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// core files, minidumps, and kcrash logs, and equivalently the more 70da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// processor and I/O bandwidth we dedicate to handling these crashes when 71da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// many occur at once. Also note that if core files are configured to 72da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// be left on the file system, we stop adding crashes when either the 73da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// number of core files or minidumps reaches this number. 74da5db7a8304e22af6c57733460516857e9211b32Ken Mixterconst int CrashCollector::kMaxCrashDirectorySize = 32; 7504ec10fc93b08057657503559ecf511661b55c9fKen Mixter 769f90acaa4d420530d7b4ddd37112518df68e373aSimon Queusing base::FilePath; 77a557c1187ff19d422db2a9c951ecd8f7243e79bdMike Frysingerusing base::StringPrintf; 789f90acaa4d420530d7b4ddd37112518df68e373aSimon Que 79afcf80821c57a189b53b7a66f76d13855d63821eKen MixterCrashCollector::CrashCollector() 809b1f300139689eb9c7b7a35e91a4fbc1eab93b4eLei Zhang : lsb_release_(kLsbRelease), 81acc7938ede0e3c07a2d1809f82b174b51f7ab7c5Simon Que log_config_path_(kDefaultLogConfig) { 820340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 830340316050044e0995b98fea87ed41ea77abb28bKen Mixter 840340316050044e0995b98fea87ed41ea77abb28bKen MixterCrashCollector::~CrashCollector() { 850340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 860340316050044e0995b98fea87ed41ea77abb28bKen Mixter 870340316050044e0995b98fea87ed41ea77abb28bKen Mixtervoid CrashCollector::Initialize( 880340316050044e0995b98fea87ed41ea77abb28bKen Mixter CrashCollector::CountCrashFunction count_crash_function, 89a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter CrashCollector::IsFeedbackAllowedFunction is_feedback_allowed_function) { 900340316050044e0995b98fea87ed41ea77abb28bKen Mixter CHECK(count_crash_function != NULL); 910340316050044e0995b98fea87ed41ea77abb28bKen Mixter CHECK(is_feedback_allowed_function != NULL); 920340316050044e0995b98fea87ed41ea77abb28bKen Mixter 930340316050044e0995b98fea87ed41ea77abb28bKen Mixter count_crash_function_ = count_crash_function; 940340316050044e0995b98fea87ed41ea77abb28bKen Mixter is_feedback_allowed_function_ = is_feedback_allowed_function; 950340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 960340316050044e0995b98fea87ed41ea77abb28bKen Mixter 979b346474538a255bc7144ae358bb0ee129163d58Ken Mixterint CrashCollector::WriteNewFile(const FilePath &filename, 989b346474538a255bc7144ae358bb0ee129163d58Ken Mixter const char *data, 999b346474538a255bc7144ae358bb0ee129163d58Ken Mixter int size) { 1009b346474538a255bc7144ae358bb0ee129163d58Ken Mixter int fd = HANDLE_EINTR(open(filename.value().c_str(), 1019b346474538a255bc7144ae358bb0ee129163d58Ken Mixter O_CREAT | O_WRONLY | O_TRUNC | O_EXCL, 0666)); 1029b346474538a255bc7144ae358bb0ee129163d58Ken Mixter if (fd < 0) { 1039b346474538a255bc7144ae358bb0ee129163d58Ken Mixter return -1; 1049b346474538a255bc7144ae358bb0ee129163d58Ken Mixter } 1059b346474538a255bc7144ae358bb0ee129163d58Ken Mixter 106f30c641225e55055641ffe3fd679a96e44f34af6Ben Chan int rv = base::WriteFileDescriptor(fd, data, size); 107f1a5014637180457af21cc40a5ca64ab18a6947bMike Frysinger IGNORE_EINTR(close(fd)); 1089b346474538a255bc7144ae358bb0ee129163d58Ken Mixter return rv; 1099b346474538a255bc7144ae358bb0ee129163d58Ken Mixter} 1109b346474538a255bc7144ae358bb0ee129163d58Ken Mixter 111ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixterstd::string CrashCollector::Sanitize(const std::string &name) { 1129895096f8b8046456bec96292f9c547b11913248Thiemo Nagel // Make sure the sanitized name does not include any periods. 1139895096f8b8046456bec96292f9c547b11913248Thiemo Nagel // The logic in crash_sender relies on this. 114ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::string result = name; 115ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter for (size_t i = 0; i < name.size(); ++i) { 116ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter if (!isalnum(result[i]) && result[i] != '_') 117ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter result[i] = '_'; 118ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 119ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter return result; 120ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter} 121ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter 1220340316050044e0995b98fea87ed41ea77abb28bKen Mixterstd::string CrashCollector::FormatDumpBasename(const std::string &exec_name, 1230340316050044e0995b98fea87ed41ea77abb28bKen Mixter time_t timestamp, 1240340316050044e0995b98fea87ed41ea77abb28bKen Mixter pid_t pid) { 1250340316050044e0995b98fea87ed41ea77abb28bKen Mixter struct tm tm; 1260340316050044e0995b98fea87ed41ea77abb28bKen Mixter localtime_r(×tamp, &tm); 127ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::string sanitized_exec_name = Sanitize(exec_name); 1280340316050044e0995b98fea87ed41ea77abb28bKen Mixter return StringPrintf("%s.%04d%02d%02d.%02d%02d%02d.%d", 129ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter sanitized_exec_name.c_str(), 1300340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_year + 1900, 1310340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_mon + 1, 1320340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_mday, 1330340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_hour, 1340340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_min, 1350340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_sec, 1360340316050044e0995b98fea87ed41ea77abb28bKen Mixter pid); 1370340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 1380340316050044e0995b98fea87ed41ea77abb28bKen Mixter 139207694d3f491ef602a859c30cc1379584f2d61cfKen MixterFilePath CrashCollector::GetCrashPath(const FilePath &crash_directory, 140207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter const std::string &basename, 141207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter const std::string &extension) { 142207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter return crash_directory.Append(StringPrintf("%s.%s", 143207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter basename.c_str(), 144207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter extension.c_str())); 145207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter} 146207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter 147f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysingernamespace { 148f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 149f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysingerconst char *GetGErrorMessage(const GError *error) { 150f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger if (!error) 151f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return "Unknown error."; 152f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return error->message; 153f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger} 154f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 155f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger} 156f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 157f19b518532cb2ab8fc1ed77381809f24a30ac4caMike FrysingerGHashTable *CrashCollector::GetActiveUserSessions(void) { 158f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger GHashTable *active_sessions = NULL; 159f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 160f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger chromeos::dbus::BusConnection dbus = chromeos::dbus::GetSystemBusConnection(); 161f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger if (!dbus.HasConnection()) { 162f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger LOG(ERROR) << "Error connecting to system D-Bus"; 163f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return active_sessions; 164f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger } 165f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger chromeos::dbus::Proxy proxy(dbus, 166f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger login_manager::kSessionManagerServiceName, 167f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger login_manager::kSessionManagerServicePath, 168f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger login_manager::kSessionManagerInterface); 169f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger if (!proxy) { 170f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger LOG(ERROR) << "Error creating D-Bus proxy to interface " 171f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger << "'" << login_manager::kSessionManagerServiceName << "'"; 172f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return active_sessions; 173f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger } 174f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 175f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger // Request all the active sessions. 176f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger GError *gerror = NULL; 177f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger if (!dbus_g_proxy_call(proxy.gproxy(), 178f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger login_manager::kSessionManagerRetrieveActiveSessions, 179f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger &gerror, G_TYPE_INVALID, 180f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger DBUS_TYPE_G_STRING_STRING_HASHTABLE, &active_sessions, 181f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger G_TYPE_INVALID)) { 182f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger LOG(ERROR) << "Error performing D-Bus proxy call " 183f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger << "'" 184f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger << login_manager::kSessionManagerRetrieveActiveSessions << "'" 185f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger << ": " << GetGErrorMessage(gerror); 186f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return active_sessions; 187f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger } 188f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 189f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return active_sessions; 190f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger} 191f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 192f19b518532cb2ab8fc1ed77381809f24a30ac4caMike FrysingerFilePath CrashCollector::GetUserCrashPath(void) { 193f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger // In this multiprofile world, there is no one-specific user dir anymore. 194f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger // Ask the session manager for the active ones, then just run with the 195f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger // first result we get back. 196f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger FilePath user_path = FilePath(kFallbackUserCrashPath); 197f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger GHashTable *active_sessions = GetActiveUserSessions(); 198f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger if (!active_sessions) 199f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return user_path; 200f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 201f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger GList *list = g_hash_table_get_values(active_sessions); 202f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger if (list) { 203f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger const char *salted_path = static_cast<const char *>(list->data); 20437843a9f8a46cd5afa57505bdb6d75aa1a75c9d2Mike Frysinger user_path = chromeos::cryptohome::home::GetHashedUserPath(salted_path) 20537843a9f8a46cd5afa57505bdb6d75aa1a75c9d2Mike Frysinger .Append("crash"); 206f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger g_list_free(list); 207f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger } 208f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 209f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger g_hash_table_destroy(active_sessions); 210f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 211f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return user_path; 212f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger} 213f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 2140340316050044e0995b98fea87ed41ea77abb28bKen MixterFilePath CrashCollector::GetCrashDirectoryInfo( 2150340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t process_euid, 2160340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t default_user_id, 2170340316050044e0995b98fea87ed41ea77abb28bKen Mixter gid_t default_user_group, 2180340316050044e0995b98fea87ed41ea77abb28bKen Mixter mode_t *mode, 2190340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t *directory_owner, 2200340316050044e0995b98fea87ed41ea77abb28bKen Mixter gid_t *directory_group) { 2214fe30db1405498dd21162436eda081486f400fa8Michael Krebs // TODO(mkrebs): This can go away once Chrome crashes are handled 2224fe30db1405498dd21162436eda081486f400fa8Michael Krebs // normally (see crosbug.com/5872). 2234fe30db1405498dd21162436eda081486f400fa8Michael Krebs // Check if the user crash directory should be used. If we are 2244fe30db1405498dd21162436eda081486f400fa8Michael Krebs // collecting chrome crashes during autotesting, we want to put them in 2254fe30db1405498dd21162436eda081486f400fa8Michael Krebs // the system crash directory so they are outside the cryptohome -- in 2264fe30db1405498dd21162436eda081486f400fa8Michael Krebs // case we are being run during logout (see crosbug.com/18637). 2274fe30db1405498dd21162436eda081486f400fa8Michael Krebs if (process_euid == default_user_id && IsUserSpecificDirectoryEnabled()) { 2280340316050044e0995b98fea87ed41ea77abb28bKen Mixter *mode = kUserCrashPathMode; 2290340316050044e0995b98fea87ed41ea77abb28bKen Mixter *directory_owner = default_user_id; 2300340316050044e0995b98fea87ed41ea77abb28bKen Mixter *directory_group = default_user_group; 231f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return GetUserCrashPath(); 2320340316050044e0995b98fea87ed41ea77abb28bKen Mixter } else { 2330340316050044e0995b98fea87ed41ea77abb28bKen Mixter *mode = kSystemCrashPathMode; 2340340316050044e0995b98fea87ed41ea77abb28bKen Mixter *directory_owner = kRootOwner; 2350340316050044e0995b98fea87ed41ea77abb28bKen Mixter *directory_group = kRootGroup; 2360340316050044e0995b98fea87ed41ea77abb28bKen Mixter return FilePath(kSystemCrashPath); 2370340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 2380340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 2390340316050044e0995b98fea87ed41ea77abb28bKen Mixter 2400340316050044e0995b98fea87ed41ea77abb28bKen Mixterbool CrashCollector::GetUserInfoFromName(const std::string &name, 2410340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t *uid, 2420340316050044e0995b98fea87ed41ea77abb28bKen Mixter gid_t *gid) { 2430340316050044e0995b98fea87ed41ea77abb28bKen Mixter char storage[256]; 2440340316050044e0995b98fea87ed41ea77abb28bKen Mixter struct passwd passwd_storage; 2450340316050044e0995b98fea87ed41ea77abb28bKen Mixter struct passwd *passwd_result = NULL; 2460340316050044e0995b98fea87ed41ea77abb28bKen Mixter 2470340316050044e0995b98fea87ed41ea77abb28bKen Mixter if (getpwnam_r(name.c_str(), &passwd_storage, storage, sizeof(storage), 2480340316050044e0995b98fea87ed41ea77abb28bKen Mixter &passwd_result) != 0 || passwd_result == NULL) { 249a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Cannot find user named " << name; 2500340316050044e0995b98fea87ed41ea77abb28bKen Mixter return false; 2510340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 2520340316050044e0995b98fea87ed41ea77abb28bKen Mixter 2530340316050044e0995b98fea87ed41ea77abb28bKen Mixter *uid = passwd_result->pw_uid; 2540340316050044e0995b98fea87ed41ea77abb28bKen Mixter *gid = passwd_result->pw_gid; 2550340316050044e0995b98fea87ed41ea77abb28bKen Mixter return true; 2560340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 2570340316050044e0995b98fea87ed41ea77abb28bKen Mixter 2580340316050044e0995b98fea87ed41ea77abb28bKen Mixterbool CrashCollector::GetCreatedCrashDirectoryByEuid(uid_t euid, 259207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter FilePath *crash_directory, 260207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter bool *out_of_capacity) { 2610340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t default_user_id; 2620340316050044e0995b98fea87ed41ea77abb28bKen Mixter gid_t default_user_group; 2630340316050044e0995b98fea87ed41ea77abb28bKen Mixter 264207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter if (out_of_capacity != NULL) *out_of_capacity = false; 265207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter 2660340316050044e0995b98fea87ed41ea77abb28bKen Mixter // For testing. 2679b1f300139689eb9c7b7a35e91a4fbc1eab93b4eLei Zhang if (!forced_crash_directory_.empty()) { 2689b1f300139689eb9c7b7a35e91a4fbc1eab93b4eLei Zhang *crash_directory = forced_crash_directory_; 2690340316050044e0995b98fea87ed41ea77abb28bKen Mixter return true; 2700340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 2710340316050044e0995b98fea87ed41ea77abb28bKen Mixter 2720340316050044e0995b98fea87ed41ea77abb28bKen Mixter if (!GetUserInfoFromName(kDefaultUserName, 2730340316050044e0995b98fea87ed41ea77abb28bKen Mixter &default_user_id, 2740340316050044e0995b98fea87ed41ea77abb28bKen Mixter &default_user_group)) { 275a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Could not find default user info"; 2760340316050044e0995b98fea87ed41ea77abb28bKen Mixter return false; 2770340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 2780340316050044e0995b98fea87ed41ea77abb28bKen Mixter mode_t directory_mode; 2790340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t directory_owner; 2800340316050044e0995b98fea87ed41ea77abb28bKen Mixter gid_t directory_group; 2810340316050044e0995b98fea87ed41ea77abb28bKen Mixter *crash_directory = 2820340316050044e0995b98fea87ed41ea77abb28bKen Mixter GetCrashDirectoryInfo(euid, 2830340316050044e0995b98fea87ed41ea77abb28bKen Mixter default_user_id, 2840340316050044e0995b98fea87ed41ea77abb28bKen Mixter default_user_group, 2850340316050044e0995b98fea87ed41ea77abb28bKen Mixter &directory_mode, 2860340316050044e0995b98fea87ed41ea77abb28bKen Mixter &directory_owner, 2870340316050044e0995b98fea87ed41ea77abb28bKen Mixter &directory_group); 2880340316050044e0995b98fea87ed41ea77abb28bKen Mixter 289a557c1187ff19d422db2a9c951ecd8f7243e79bdMike Frysinger if (!base::PathExists(*crash_directory)) { 2900340316050044e0995b98fea87ed41ea77abb28bKen Mixter // Create the spool directory with the appropriate mode (regardless of 2910340316050044e0995b98fea87ed41ea77abb28bKen Mixter // umask) and ownership. 2920340316050044e0995b98fea87ed41ea77abb28bKen Mixter mode_t old_mask = umask(0); 2930340316050044e0995b98fea87ed41ea77abb28bKen Mixter if (mkdir(crash_directory->value().c_str(), directory_mode) < 0 || 2940340316050044e0995b98fea87ed41ea77abb28bKen Mixter chown(crash_directory->value().c_str(), 2950340316050044e0995b98fea87ed41ea77abb28bKen Mixter directory_owner, 2960340316050044e0995b98fea87ed41ea77abb28bKen Mixter directory_group) < 0) { 297a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Unable to create appropriate crash directory"; 2980340316050044e0995b98fea87ed41ea77abb28bKen Mixter return false; 2990340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 3000340316050044e0995b98fea87ed41ea77abb28bKen Mixter umask(old_mask); 3010340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 3020340316050044e0995b98fea87ed41ea77abb28bKen Mixter 303a557c1187ff19d422db2a9c951ecd8f7243e79bdMike Frysinger if (!base::PathExists(*crash_directory)) { 304a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Unable to create crash directory " 305a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter << crash_directory->value().c_str(); 3060340316050044e0995b98fea87ed41ea77abb28bKen Mixter return false; 3070340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 3080340316050044e0995b98fea87ed41ea77abb28bKen Mixter 30904ec10fc93b08057657503559ecf511661b55c9fKen Mixter if (!CheckHasCapacity(*crash_directory)) { 310207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter if (out_of_capacity != NULL) *out_of_capacity = true; 31104ec10fc93b08057657503559ecf511661b55c9fKen Mixter return false; 31204ec10fc93b08057657503559ecf511661b55c9fKen Mixter } 31304ec10fc93b08057657503559ecf511661b55c9fKen Mixter 3140340316050044e0995b98fea87ed41ea77abb28bKen Mixter return true; 3150340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 31604ec10fc93b08057657503559ecf511661b55c9fKen Mixter 317426fcc0bd579a87102ea50fb570dbf9834fa2962Albert ChaulkFilePath CrashCollector::GetProcessPath(pid_t pid) { 318426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk return FilePath(StringPrintf("/proc/%d", pid)); 319426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk} 320426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk 321426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulkbool CrashCollector::GetSymlinkTarget(const FilePath &symlink, 3228563d20e108c3801f107d640c9b161f1099e6bebBen Chan FilePath *target) { 323426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk int max_size = 32; 3248563d20e108c3801f107d640c9b161f1099e6bebBen Chan scoped_ptr<char[]> buffer; 325426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk while (true) { 326426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk buffer.reset(new char[max_size + 1]); 327426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk ssize_t size = readlink(symlink.value().c_str(), buffer.get(), max_size); 328426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk if (size < 0) { 329426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk int saved_errno = errno; 330426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk LOG(ERROR) << "Readlink failed on " << symlink.value() << " with " 331426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk << saved_errno; 332426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk return false; 333426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } 334426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk buffer[size] = 0; 335426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk if (size == max_size) { 336426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk // Avoid overflow when doubling. 337426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk if (max_size * 2 > max_size) { 338426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk max_size *= 2; 339426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk continue; 340426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } else { 341426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk return false; 342426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } 343426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } 344426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk break; 345426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } 346426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk 347426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk *target = FilePath(buffer.get()); 348426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk return true; 349426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk} 350426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk 351426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulkbool CrashCollector::GetExecutableBaseNameFromPid(pid_t pid, 352426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk std::string *base_name) { 353426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk FilePath target; 354426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk FilePath process_path = GetProcessPath(pid); 355426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk FilePath exe_path = process_path.Append("exe"); 356426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk if (!GetSymlinkTarget(exe_path, &target)) { 357426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk LOG(INFO) << "GetSymlinkTarget failed - Path " << process_path.value() 358426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk << " DirectoryExists: " 359a557c1187ff19d422db2a9c951ecd8f7243e79bdMike Frysinger << base::DirectoryExists(process_path); 360426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk // Try to further diagnose exe readlink failure cause. 361426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk struct stat buf; 362426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk int stat_result = stat(exe_path.value().c_str(), &buf); 363426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk int saved_errno = errno; 364426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk if (stat_result < 0) { 365426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk LOG(INFO) << "stat " << exe_path.value() << " failed: " << stat_result 366426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk << " " << saved_errno; 367426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } else { 368426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk LOG(INFO) << "stat " << exe_path.value() << " succeeded: st_mode=" 369426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk << buf.st_mode; 370426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } 371426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk return false; 372426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } 373426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk *base_name = target.BaseName().value(); 374426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk return true; 375426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk} 376426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk 37704ec10fc93b08057657503559ecf511661b55c9fKen Mixter// Return true if the given crash directory has not already reached 37804ec10fc93b08057657503559ecf511661b55c9fKen Mixter// maximum capacity. 37904ec10fc93b08057657503559ecf511661b55c9fKen Mixterbool CrashCollector::CheckHasCapacity(const FilePath &crash_directory) { 38004ec10fc93b08057657503559ecf511661b55c9fKen Mixter DIR* dir = opendir(crash_directory.value().c_str()); 38104ec10fc93b08057657503559ecf511661b55c9fKen Mixter if (!dir) { 38204ec10fc93b08057657503559ecf511661b55c9fKen Mixter return false; 38304ec10fc93b08057657503559ecf511661b55c9fKen Mixter } 38404ec10fc93b08057657503559ecf511661b55c9fKen Mixter struct dirent ent_buf; 38504ec10fc93b08057657503559ecf511661b55c9fKen Mixter struct dirent* ent; 38604ec10fc93b08057657503559ecf511661b55c9fKen Mixter bool full = false; 387ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::set<std::string> basenames; 38804ec10fc93b08057657503559ecf511661b55c9fKen Mixter while (readdir_r(dir, &ent_buf, &ent) == 0 && ent != NULL) { 38904ec10fc93b08057657503559ecf511661b55c9fKen Mixter if ((strcmp(ent->d_name, ".") == 0) || 39004ec10fc93b08057657503559ecf511661b55c9fKen Mixter (strcmp(ent->d_name, "..") == 0)) 39104ec10fc93b08057657503559ecf511661b55c9fKen Mixter continue; 39204ec10fc93b08057657503559ecf511661b55c9fKen Mixter 393ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::string filename(ent->d_name); 394ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter size_t last_dot = filename.rfind("."); 395ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::string basename; 396ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter // If there is a valid looking extension, use the base part of the 397ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter // name. If the only dot is the first byte (aka a dot file), treat 398ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter // it as unique to avoid allowing a directory full of dot files 399ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter // from accumulating. 400ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter if (last_dot != std::string::npos && last_dot != 0) 401ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter basename = filename.substr(0, last_dot); 402ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter else 403ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter basename = filename; 404ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter basenames.insert(basename); 40504ec10fc93b08057657503559ecf511661b55c9fKen Mixter 406ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter if (basenames.size() >= static_cast<size_t>(kMaxCrashDirectorySize)) { 407a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(WARNING) << "Crash directory " << crash_directory.value() 408a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter << " already full with " << kMaxCrashDirectorySize 409a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter << " pending reports"; 41004ec10fc93b08057657503559ecf511661b55c9fKen Mixter full = true; 41104ec10fc93b08057657503559ecf511661b55c9fKen Mixter break; 41204ec10fc93b08057657503559ecf511661b55c9fKen Mixter } 41304ec10fc93b08057657503559ecf511661b55c9fKen Mixter } 41404ec10fc93b08057657503559ecf511661b55c9fKen Mixter closedir(dir); 41504ec10fc93b08057657503559ecf511661b55c9fKen Mixter return !full; 41604ec10fc93b08057657503559ecf511661b55c9fKen Mixter} 417ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter 418c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixterbool CrashCollector::IsCommentLine(const std::string &line) { 419c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter size_t found = line.find_first_not_of(" "); 420c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter return found != std::string::npos && line[found] == '#'; 421c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter} 422c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter 423ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixterbool CrashCollector::ReadKeyValueFile( 424ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter const FilePath &path, 425ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter const char separator, 426ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::map<std::string, std::string> *dictionary) { 427ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::string contents; 428a557c1187ff19d422db2a9c951ecd8f7243e79bdMike Frysinger if (!base::ReadFileToString(path, &contents)) { 429ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter return false; 430ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 431ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter typedef std::vector<std::string> StringVector; 432ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter StringVector lines; 4333ba6c5b65778964fe3f643ca9df6a17b41181bf2Chris Masone base::SplitString(contents, '\n', &lines); 434ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter bool any_errors = false; 435ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter for (StringVector::iterator line = lines.begin(); line != lines.end(); 436ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter ++line) { 437ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter // Allow empty strings. 438ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter if (line->empty()) 439ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter continue; 440c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter // Allow comment lines. 441c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter if (IsCommentLine(*line)) 442c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter continue; 443ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter StringVector sides; 4443ba6c5b65778964fe3f643ca9df6a17b41181bf2Chris Masone base::SplitString(*line, separator, &sides); 445ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter if (sides.size() != 2) { 446ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter any_errors = true; 447ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter continue; 448ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 449ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter dictionary->insert(std::pair<std::string, std::string>(sides[0], sides[1])); 450ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 451ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter return !any_errors; 452ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter} 453ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter 454c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixterbool CrashCollector::GetLogContents(const FilePath &config_path, 455c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter const std::string &exec_name, 456c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter const FilePath &output_file) { 457c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter std::map<std::string, std::string> log_commands; 458c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter if (!ReadKeyValueFile(config_path, ':', &log_commands)) { 459a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(INFO) << "Unable to read log configuration file " 460a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter << config_path.value(); 461c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter return false; 462c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter } 463c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter 464c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter if (log_commands.find(exec_name) == log_commands.end()) 465c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter return false; 466c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter 467a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter chromeos::ProcessImpl diag_process; 468a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter diag_process.AddArg(kShellPath); 469c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter std::string shell_command = log_commands[exec_name]; 470a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter diag_process.AddStringOption("-c", shell_command); 471a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter diag_process.RedirectOutput(output_file.value()); 472c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter 473a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter int result = diag_process.Run(); 474a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter if (result != 0) { 475a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(INFO) << "Running shell command " << shell_command << "failed with: " 476a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter << result; 477c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter return false; 478c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter } 479c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter return true; 480c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter} 481c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter 482afcf80821c57a189b53b7a66f76d13855d63821eKen Mixtervoid CrashCollector::AddCrashMetaData(const std::string &key, 483afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter const std::string &value) { 484afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter extra_metadata_.append(StringPrintf("%s=%s\n", key.c_str(), value.c_str())); 485afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter} 486afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter 48733dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulkvoid CrashCollector::AddCrashMetaUploadFile(const std::string &key, 48833dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk const std::string &path) { 48933dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk if (!path.empty()) 49033dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk AddCrashMetaData(kUploadFilePrefix + key, path); 49133dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk} 49233dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk 49333dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulkvoid CrashCollector::AddCrashMetaUploadData(const std::string &key, 49433dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk const std::string &value) { 49533dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk if (!value.empty()) 49633dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk AddCrashMetaData(kUploadVarPrefix + key, value); 49733dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk} 49833dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk 499ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixtervoid CrashCollector::WriteCrashMetaData(const FilePath &meta_path, 500c909b6944602bd6c1eb6d3c54ec41b1a4fc57b07Ken Mixter const std::string &exec_name, 501c909b6944602bd6c1eb6d3c54ec41b1a4fc57b07Ken Mixter const std::string &payload_path) { 502ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::map<std::string, std::string> contents; 5039b1f300139689eb9c7b7a35e91a4fbc1eab93b4eLei Zhang if (!ReadKeyValueFile(FilePath(lsb_release_), '=', &contents)) { 504a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Problem parsing " << lsb_release_; 505ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter // Even though there was some failure, take as much as we could read. 506ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 507ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::string version("unknown"); 508ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::map<std::string, std::string>::iterator i; 509ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter if ((i = contents.find("CHROMEOS_RELEASE_VERSION")) != contents.end()) { 510ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter version = i->second; 511ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 512f84ea21aab3c1c6ef1f358534e5c437878675d74Ben Chan int64_t payload_size = -1; 513a557c1187ff19d422db2a9c951ecd8f7243e79bdMike Frysinger base::GetFileSize(FilePath(payload_path), &payload_size); 514afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter std::string meta_data = StringPrintf("%sexec_name=%s\n" 515ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter "ver=%s\n" 516207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter "payload=%s\n" 51765b4c1efb0bca77f3a73401499adc5c39d982c18Mike Frysinger "payload_size=%"PRId64"\n" 518ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter "done=1\n", 519afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter extra_metadata_.c_str(), 520ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter exec_name.c_str(), 521c909b6944602bd6c1eb6d3c54ec41b1a4fc57b07Ken Mixter version.c_str(), 522207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter payload_path.c_str(), 523c909b6944602bd6c1eb6d3c54ec41b1a4fc57b07Ken Mixter payload_size); 524f30c641225e55055641ffe3fd679a96e44f34af6Ben Chan // We must use WriteNewFile instead of base::WriteFile as we 5259b346474538a255bc7144ae358bb0ee129163d58Ken Mixter // do not want to write with root access to a symlink that an attacker 5269b346474538a255bc7144ae358bb0ee129163d58Ken Mixter // might have created. 5279b346474538a255bc7144ae358bb0ee129163d58Ken Mixter if (WriteNewFile(meta_path, meta_data.c_str(), meta_data.size()) < 0) { 528a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Unable to write " << meta_path.value(); 529ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 530ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter} 5311652fb2cc2bc6d08ac3719fd3d90b43485d539feThieu Le 5321652fb2cc2bc6d08ac3719fd3d90b43485d539feThieu Lebool CrashCollector::IsCrashTestInProgress() { 533a557c1187ff19d422db2a9c951ecd8f7243e79bdMike Frysinger return base::PathExists(FilePath(kCrashTestInProgressPath)); 5341652fb2cc2bc6d08ac3719fd3d90b43485d539feThieu Le} 5354fe30db1405498dd21162436eda081486f400fa8Michael Krebs 5364fe30db1405498dd21162436eda081486f400fa8Michael Krebsbool CrashCollector::IsDeveloperImage() { 5374fe30db1405498dd21162436eda081486f400fa8Michael Krebs // If we're testing crash reporter itself, we don't want to special-case 5384fe30db1405498dd21162436eda081486f400fa8Michael Krebs // for developer images. 5394fe30db1405498dd21162436eda081486f400fa8Michael Krebs if (IsCrashTestInProgress()) 5404fe30db1405498dd21162436eda081486f400fa8Michael Krebs return false; 541a557c1187ff19d422db2a9c951ecd8f7243e79bdMike Frysinger return base::PathExists(FilePath(kLeaveCoreFile)); 5424fe30db1405498dd21162436eda081486f400fa8Michael Krebs} 5434fe30db1405498dd21162436eda081486f400fa8Michael Krebs 5444fe30db1405498dd21162436eda081486f400fa8Michael Krebsbool CrashCollector::ShouldHandleChromeCrashes() { 5454fe30db1405498dd21162436eda081486f400fa8Michael Krebs // If we're testing crash reporter itself, we don't want to allow an 5464fe30db1405498dd21162436eda081486f400fa8Michael Krebs // override for chrome crashes. And, let's be conservative and only 5474fe30db1405498dd21162436eda081486f400fa8Michael Krebs // allow an override for developer images. 5484fe30db1405498dd21162436eda081486f400fa8Michael Krebs if (!IsCrashTestInProgress() && IsDeveloperImage()) { 5494fe30db1405498dd21162436eda081486f400fa8Michael Krebs // Check if there's an override to indicate we should indeed collect 5504fe30db1405498dd21162436eda081486f400fa8Michael Krebs // chrome crashes. This allows the crashes to still be tracked when 5514fe30db1405498dd21162436eda081486f400fa8Michael Krebs // they occur in autotests. See "crosbug.com/17987". 552a557c1187ff19d422db2a9c951ecd8f7243e79bdMike Frysinger if (base::PathExists(FilePath(kCollectChromeFile))) 5534fe30db1405498dd21162436eda081486f400fa8Michael Krebs return true; 5544fe30db1405498dd21162436eda081486f400fa8Michael Krebs } 5554fe30db1405498dd21162436eda081486f400fa8Michael Krebs // We default to ignoring chrome crashes. 5564fe30db1405498dd21162436eda081486f400fa8Michael Krebs return false; 5574fe30db1405498dd21162436eda081486f400fa8Michael Krebs} 5584fe30db1405498dd21162436eda081486f400fa8Michael Krebs 5594fe30db1405498dd21162436eda081486f400fa8Michael Krebsbool CrashCollector::IsUserSpecificDirectoryEnabled() { 5604fe30db1405498dd21162436eda081486f400fa8Michael Krebs return !ShouldHandleChromeCrashes(); 5614fe30db1405498dd21162436eda081486f400fa8Michael Krebs} 562