crash_collector.cc revision f19b518532cb2ab8fc1ed77381809f24a30ac4ca
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. 90340316050044e0995b98fea87ed41ea77abb28bKen Mixter#include <pwd.h> // For struct passwd. 100340316050044e0995b98fea87ed41ea77abb28bKen Mixter#include <sys/types.h> // for mode_t. 119b346474538a255bc7144ae358bb0ee129163d58Ken Mixter#include <sys/wait.h> // For waitpid. 129b346474538a255bc7144ae358bb0ee129163d58Ken Mixter#include <unistd.h> // For execv and fork. 1365b4c1efb0bca77f3a73401499adc5c39d982c18Mike Frysinger#define __STDC_FORMAT_MACROS // PRId64 1465b4c1efb0bca77f3a73401499adc5c39d982c18Mike Frysinger#include <inttypes.h> 150340316050044e0995b98fea87ed41ea77abb28bKen Mixter 16ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter#include <set> 17f70060c5e610ed0aa648dcb6aaea5d859834b8baSimon Que#include <vector> 18ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter 19f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger#include <dbus/dbus-glib-lowlevel.h> 20f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger#include <glib.h> 21f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 220340316050044e0995b98fea87ed41ea77abb28bKen Mixter#include "base/file_util.h" 230340316050044e0995b98fea87ed41ea77abb28bKen Mixter#include "base/logging.h" 241a8780d309b980914a5e2403bf9addafe07386ecMike Frysinger#include "base/posix/eintr_wrapper.h" 258a68c7cb30d053de2b3008bee20422258f5e6b3cChris Masone#include "base/string_split.h" 260340316050044e0995b98fea87ed41ea77abb28bKen Mixter#include "base/string_util.h" 2757b261cf04f45d67b02f6bea8ad2c37734da86e0Mike Frysinger#include "base/stringprintf.h" 28f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger#include "chromeos/cryptohome.h" 29f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger#include "chromeos/dbus/dbus.h" 30f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger#include "chromeos/dbus/service_constants.h" 31a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter#include "chromeos/process.h" 320340316050044e0995b98fea87ed41ea77abb28bKen Mixter 334fe30db1405498dd21162436eda081486f400fa8Michael Krebsstatic const char kCollectChromeFile[] = 344fe30db1405498dd21162436eda081486f400fa8Michael Krebs "/mnt/stateful_partition/etc/collect_chrome_crashes"; 354fe30db1405498dd21162436eda081486f400fa8Michael Krebsstatic const char kCrashTestInProgressPath[] = "/tmp/crash-test-in-progress"; 36f70060c5e610ed0aa648dcb6aaea5d859834b8baSimon Questatic const char kDefaultLogConfig[] = "/etc/crash_reporter_logs.conf"; 370340316050044e0995b98fea87ed41ea77abb28bKen Mixterstatic const char kDefaultUserName[] = "chronos"; 384fe30db1405498dd21162436eda081486f400fa8Michael Krebsstatic const char kLeaveCoreFile[] = "/root/.leave_core"; 39ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixterstatic const char kLsbRelease[] = "/etc/lsb-release"; 40c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixterstatic const char kShellPath[] = "/bin/sh"; 410340316050044e0995b98fea87ed41ea77abb28bKen Mixterstatic const char kSystemCrashPath[] = "/var/spool/crash"; 42f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// Normally this path is not used. Unfortunately, there are a few edge cases 43f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// where we need this. Any process that runs as kDefaultUserName that crashes 44f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// is consider a "user crash". That includes the initial Chrome browser that 45f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// runs the login screen. If that blows up, there is no logged in user yet, 46f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// so there is no per-user dir for us to stash things in. Instead we fallback 47f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// to this path as it is at least encrypted on a per-system basis. 48f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// 49f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// This also comes up when running autotests. The GUI is sitting at the login 50f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// screen while tests are sshing in, changing users, and triggering crashes as 51f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// the user (purposefully). 52f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysingerstatic const char kFallbackUserCrashPath[] = "/home/chronos/crash"; 530340316050044e0995b98fea87ed41ea77abb28bKen Mixter 540340316050044e0995b98fea87ed41ea77abb28bKen Mixter// Directory mode of the user crash spool directory. 550340316050044e0995b98fea87ed41ea77abb28bKen Mixterstatic const mode_t kUserCrashPathMode = 0755; 560340316050044e0995b98fea87ed41ea77abb28bKen Mixter 570340316050044e0995b98fea87ed41ea77abb28bKen Mixter// Directory mode of the system crash spool directory. 580340316050044e0995b98fea87ed41ea77abb28bKen Mixterstatic const mode_t kSystemCrashPathMode = 01755; 590340316050044e0995b98fea87ed41ea77abb28bKen Mixter 600340316050044e0995b98fea87ed41ea77abb28bKen Mixterstatic const uid_t kRootOwner = 0; 610340316050044e0995b98fea87ed41ea77abb28bKen Mixterstatic const uid_t kRootGroup = 0; 620340316050044e0995b98fea87ed41ea77abb28bKen Mixter 63da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// Maximum crash reports per crash spool directory. Note that this is 64da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// a separate maximum from the maximum rate at which we upload these 65da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// diagnostics. The higher this rate is, the more space we allow for 66da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// core files, minidumps, and kcrash logs, and equivalently the more 67da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// processor and I/O bandwidth we dedicate to handling these crashes when 68da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// many occur at once. Also note that if core files are configured to 69da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// be left on the file system, we stop adding crashes when either the 70da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// number of core files or minidumps reaches this number. 71da5db7a8304e22af6c57733460516857e9211b32Ken Mixterconst int CrashCollector::kMaxCrashDirectorySize = 32; 7204ec10fc93b08057657503559ecf511661b55c9fKen Mixter 739f90acaa4d420530d7b4ddd37112518df68e373aSimon Queusing base::FilePath; 749f90acaa4d420530d7b4ddd37112518df68e373aSimon Que 75afcf80821c57a189b53b7a66f76d13855d63821eKen MixterCrashCollector::CrashCollector() 76afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter : forced_crash_directory_(NULL), 77acc7938ede0e3c07a2d1809f82b174b51f7ab7c5Simon Que lsb_release_(kLsbRelease), 78acc7938ede0e3c07a2d1809f82b174b51f7ab7c5Simon Que log_config_path_(kDefaultLogConfig) { 790340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 800340316050044e0995b98fea87ed41ea77abb28bKen Mixter 810340316050044e0995b98fea87ed41ea77abb28bKen MixterCrashCollector::~CrashCollector() { 820340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 830340316050044e0995b98fea87ed41ea77abb28bKen Mixter 840340316050044e0995b98fea87ed41ea77abb28bKen Mixtervoid CrashCollector::Initialize( 850340316050044e0995b98fea87ed41ea77abb28bKen Mixter CrashCollector::CountCrashFunction count_crash_function, 86a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter CrashCollector::IsFeedbackAllowedFunction is_feedback_allowed_function) { 870340316050044e0995b98fea87ed41ea77abb28bKen Mixter CHECK(count_crash_function != NULL); 880340316050044e0995b98fea87ed41ea77abb28bKen Mixter CHECK(is_feedback_allowed_function != NULL); 890340316050044e0995b98fea87ed41ea77abb28bKen Mixter 900340316050044e0995b98fea87ed41ea77abb28bKen Mixter count_crash_function_ = count_crash_function; 910340316050044e0995b98fea87ed41ea77abb28bKen Mixter is_feedback_allowed_function_ = is_feedback_allowed_function; 920340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 930340316050044e0995b98fea87ed41ea77abb28bKen Mixter 949b346474538a255bc7144ae358bb0ee129163d58Ken Mixterint CrashCollector::WriteNewFile(const FilePath &filename, 959b346474538a255bc7144ae358bb0ee129163d58Ken Mixter const char *data, 969b346474538a255bc7144ae358bb0ee129163d58Ken Mixter int size) { 979b346474538a255bc7144ae358bb0ee129163d58Ken Mixter int fd = HANDLE_EINTR(open(filename.value().c_str(), 989b346474538a255bc7144ae358bb0ee129163d58Ken Mixter O_CREAT | O_WRONLY | O_TRUNC | O_EXCL, 0666)); 999b346474538a255bc7144ae358bb0ee129163d58Ken Mixter if (fd < 0) { 1009b346474538a255bc7144ae358bb0ee129163d58Ken Mixter return -1; 1019b346474538a255bc7144ae358bb0ee129163d58Ken Mixter } 1029b346474538a255bc7144ae358bb0ee129163d58Ken Mixter 1039b346474538a255bc7144ae358bb0ee129163d58Ken Mixter int rv = file_util::WriteFileDescriptor(fd, data, size); 1049b346474538a255bc7144ae358bb0ee129163d58Ken Mixter HANDLE_EINTR(close(fd)); 1059b346474538a255bc7144ae358bb0ee129163d58Ken Mixter return rv; 1069b346474538a255bc7144ae358bb0ee129163d58Ken Mixter} 1079b346474538a255bc7144ae358bb0ee129163d58Ken Mixter 108ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixterstd::string CrashCollector::Sanitize(const std::string &name) { 109ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::string result = name; 110ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter for (size_t i = 0; i < name.size(); ++i) { 111ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter if (!isalnum(result[i]) && result[i] != '_') 112ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter result[i] = '_'; 113ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 114ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter return result; 115ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter} 116ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter 1170340316050044e0995b98fea87ed41ea77abb28bKen Mixterstd::string CrashCollector::FormatDumpBasename(const std::string &exec_name, 1180340316050044e0995b98fea87ed41ea77abb28bKen Mixter time_t timestamp, 1190340316050044e0995b98fea87ed41ea77abb28bKen Mixter pid_t pid) { 1200340316050044e0995b98fea87ed41ea77abb28bKen Mixter struct tm tm; 1210340316050044e0995b98fea87ed41ea77abb28bKen Mixter localtime_r(×tamp, &tm); 122ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::string sanitized_exec_name = Sanitize(exec_name); 1230340316050044e0995b98fea87ed41ea77abb28bKen Mixter return StringPrintf("%s.%04d%02d%02d.%02d%02d%02d.%d", 124ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter sanitized_exec_name.c_str(), 1250340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_year + 1900, 1260340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_mon + 1, 1270340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_mday, 1280340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_hour, 1290340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_min, 1300340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_sec, 1310340316050044e0995b98fea87ed41ea77abb28bKen Mixter pid); 1320340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 1330340316050044e0995b98fea87ed41ea77abb28bKen Mixter 134207694d3f491ef602a859c30cc1379584f2d61cfKen MixterFilePath CrashCollector::GetCrashPath(const FilePath &crash_directory, 135207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter const std::string &basename, 136207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter const std::string &extension) { 137207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter return crash_directory.Append(StringPrintf("%s.%s", 138207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter basename.c_str(), 139207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter extension.c_str())); 140207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter} 141207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter 142f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysingernamespace { 143f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 144f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysingerconst char *GetGErrorMessage(const GError *error) { 145f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger if (!error) 146f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return "Unknown error."; 147f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return error->message; 148f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger} 149f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 150f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger} 151f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 152f19b518532cb2ab8fc1ed77381809f24a30ac4caMike FrysingerGHashTable *CrashCollector::GetActiveUserSessions(void) { 153f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger GHashTable *active_sessions = NULL; 154f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 155f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger chromeos::dbus::BusConnection dbus = chromeos::dbus::GetSystemBusConnection(); 156f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger if (!dbus.HasConnection()) { 157f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger LOG(ERROR) << "Error connecting to system D-Bus"; 158f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return active_sessions; 159f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger } 160f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger chromeos::dbus::Proxy proxy(dbus, 161f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger login_manager::kSessionManagerServiceName, 162f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger login_manager::kSessionManagerServicePath, 163f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger login_manager::kSessionManagerInterface); 164f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger if (!proxy) { 165f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger LOG(ERROR) << "Error creating D-Bus proxy to interface " 166f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger << "'" << login_manager::kSessionManagerServiceName << "'"; 167f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return active_sessions; 168f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger } 169f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 170f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger // Request all the active sessions. 171f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger GError *gerror = NULL; 172f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger if (!dbus_g_proxy_call(proxy.gproxy(), 173f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger login_manager::kSessionManagerRetrieveActiveSessions, 174f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger &gerror, G_TYPE_INVALID, 175f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger DBUS_TYPE_G_STRING_STRING_HASHTABLE, &active_sessions, 176f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger G_TYPE_INVALID)) { 177f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger LOG(ERROR) << "Error performing D-Bus proxy call " 178f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger << "'" 179f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger << login_manager::kSessionManagerRetrieveActiveSessions << "'" 180f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger << ": " << GetGErrorMessage(gerror); 181f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return active_sessions; 182f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger } 183f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 184f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return active_sessions; 185f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger} 186f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 187f19b518532cb2ab8fc1ed77381809f24a30ac4caMike FrysingerFilePath CrashCollector::GetUserCrashPath(void) { 188f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger // In this multiprofile world, there is no one-specific user dir anymore. 189f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger // Ask the session manager for the active ones, then just run with the 190f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger // first result we get back. 191f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger FilePath user_path = FilePath(kFallbackUserCrashPath); 192f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger GHashTable *active_sessions = GetActiveUserSessions(); 193f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger if (!active_sessions) 194f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return user_path; 195f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 196f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger GList *list = g_hash_table_get_values(active_sessions); 197f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger if (list) { 198f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger const char *salted_path = static_cast<const char *>(list->data); 199f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger user_path = chromeos::cryptohome::home::GetHashedUserPath(salted_path); 200f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger g_list_free(list); 201f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger } 202f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 203f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger g_hash_table_destroy(active_sessions); 204f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 205f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return user_path; 206f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger} 207f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 2080340316050044e0995b98fea87ed41ea77abb28bKen MixterFilePath CrashCollector::GetCrashDirectoryInfo( 2090340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t process_euid, 2100340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t default_user_id, 2110340316050044e0995b98fea87ed41ea77abb28bKen Mixter gid_t default_user_group, 2120340316050044e0995b98fea87ed41ea77abb28bKen Mixter mode_t *mode, 2130340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t *directory_owner, 2140340316050044e0995b98fea87ed41ea77abb28bKen Mixter gid_t *directory_group) { 2154fe30db1405498dd21162436eda081486f400fa8Michael Krebs // TODO(mkrebs): This can go away once Chrome crashes are handled 2164fe30db1405498dd21162436eda081486f400fa8Michael Krebs // normally (see crosbug.com/5872). 2174fe30db1405498dd21162436eda081486f400fa8Michael Krebs // Check if the user crash directory should be used. If we are 2184fe30db1405498dd21162436eda081486f400fa8Michael Krebs // collecting chrome crashes during autotesting, we want to put them in 2194fe30db1405498dd21162436eda081486f400fa8Michael Krebs // the system crash directory so they are outside the cryptohome -- in 2204fe30db1405498dd21162436eda081486f400fa8Michael Krebs // case we are being run during logout (see crosbug.com/18637). 2214fe30db1405498dd21162436eda081486f400fa8Michael Krebs if (process_euid == default_user_id && IsUserSpecificDirectoryEnabled()) { 2220340316050044e0995b98fea87ed41ea77abb28bKen Mixter *mode = kUserCrashPathMode; 2230340316050044e0995b98fea87ed41ea77abb28bKen Mixter *directory_owner = default_user_id; 2240340316050044e0995b98fea87ed41ea77abb28bKen Mixter *directory_group = default_user_group; 225f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return GetUserCrashPath(); 2260340316050044e0995b98fea87ed41ea77abb28bKen Mixter } else { 2270340316050044e0995b98fea87ed41ea77abb28bKen Mixter *mode = kSystemCrashPathMode; 2280340316050044e0995b98fea87ed41ea77abb28bKen Mixter *directory_owner = kRootOwner; 2290340316050044e0995b98fea87ed41ea77abb28bKen Mixter *directory_group = kRootGroup; 2300340316050044e0995b98fea87ed41ea77abb28bKen Mixter return FilePath(kSystemCrashPath); 2310340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 2320340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 2330340316050044e0995b98fea87ed41ea77abb28bKen Mixter 2340340316050044e0995b98fea87ed41ea77abb28bKen Mixterbool CrashCollector::GetUserInfoFromName(const std::string &name, 2350340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t *uid, 2360340316050044e0995b98fea87ed41ea77abb28bKen Mixter gid_t *gid) { 2370340316050044e0995b98fea87ed41ea77abb28bKen Mixter char storage[256]; 2380340316050044e0995b98fea87ed41ea77abb28bKen Mixter struct passwd passwd_storage; 2390340316050044e0995b98fea87ed41ea77abb28bKen Mixter struct passwd *passwd_result = NULL; 2400340316050044e0995b98fea87ed41ea77abb28bKen Mixter 2410340316050044e0995b98fea87ed41ea77abb28bKen Mixter if (getpwnam_r(name.c_str(), &passwd_storage, storage, sizeof(storage), 2420340316050044e0995b98fea87ed41ea77abb28bKen Mixter &passwd_result) != 0 || passwd_result == NULL) { 243a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Cannot find user named " << name; 2440340316050044e0995b98fea87ed41ea77abb28bKen Mixter return false; 2450340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 2460340316050044e0995b98fea87ed41ea77abb28bKen Mixter 2470340316050044e0995b98fea87ed41ea77abb28bKen Mixter *uid = passwd_result->pw_uid; 2480340316050044e0995b98fea87ed41ea77abb28bKen Mixter *gid = passwd_result->pw_gid; 2490340316050044e0995b98fea87ed41ea77abb28bKen Mixter return true; 2500340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 2510340316050044e0995b98fea87ed41ea77abb28bKen Mixter 2520340316050044e0995b98fea87ed41ea77abb28bKen Mixterbool CrashCollector::GetCreatedCrashDirectoryByEuid(uid_t euid, 253207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter FilePath *crash_directory, 254207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter bool *out_of_capacity) { 2550340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t default_user_id; 2560340316050044e0995b98fea87ed41ea77abb28bKen Mixter gid_t default_user_group; 2570340316050044e0995b98fea87ed41ea77abb28bKen Mixter 258207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter if (out_of_capacity != NULL) *out_of_capacity = false; 259207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter 2600340316050044e0995b98fea87ed41ea77abb28bKen Mixter // For testing. 2610340316050044e0995b98fea87ed41ea77abb28bKen Mixter if (forced_crash_directory_ != NULL) { 2620340316050044e0995b98fea87ed41ea77abb28bKen Mixter *crash_directory = FilePath(forced_crash_directory_); 2630340316050044e0995b98fea87ed41ea77abb28bKen Mixter return true; 2640340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 2650340316050044e0995b98fea87ed41ea77abb28bKen Mixter 2660340316050044e0995b98fea87ed41ea77abb28bKen Mixter if (!GetUserInfoFromName(kDefaultUserName, 2670340316050044e0995b98fea87ed41ea77abb28bKen Mixter &default_user_id, 2680340316050044e0995b98fea87ed41ea77abb28bKen Mixter &default_user_group)) { 269a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Could not find default user info"; 2700340316050044e0995b98fea87ed41ea77abb28bKen Mixter return false; 2710340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 2720340316050044e0995b98fea87ed41ea77abb28bKen Mixter mode_t directory_mode; 2730340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t directory_owner; 2740340316050044e0995b98fea87ed41ea77abb28bKen Mixter gid_t directory_group; 2750340316050044e0995b98fea87ed41ea77abb28bKen Mixter *crash_directory = 2760340316050044e0995b98fea87ed41ea77abb28bKen Mixter GetCrashDirectoryInfo(euid, 2770340316050044e0995b98fea87ed41ea77abb28bKen Mixter default_user_id, 2780340316050044e0995b98fea87ed41ea77abb28bKen Mixter default_user_group, 2790340316050044e0995b98fea87ed41ea77abb28bKen Mixter &directory_mode, 2800340316050044e0995b98fea87ed41ea77abb28bKen Mixter &directory_owner, 2810340316050044e0995b98fea87ed41ea77abb28bKen Mixter &directory_group); 2820340316050044e0995b98fea87ed41ea77abb28bKen Mixter 2830340316050044e0995b98fea87ed41ea77abb28bKen Mixter if (!file_util::PathExists(*crash_directory)) { 2840340316050044e0995b98fea87ed41ea77abb28bKen Mixter // Create the spool directory with the appropriate mode (regardless of 2850340316050044e0995b98fea87ed41ea77abb28bKen Mixter // umask) and ownership. 2860340316050044e0995b98fea87ed41ea77abb28bKen Mixter mode_t old_mask = umask(0); 2870340316050044e0995b98fea87ed41ea77abb28bKen Mixter if (mkdir(crash_directory->value().c_str(), directory_mode) < 0 || 2880340316050044e0995b98fea87ed41ea77abb28bKen Mixter chown(crash_directory->value().c_str(), 2890340316050044e0995b98fea87ed41ea77abb28bKen Mixter directory_owner, 2900340316050044e0995b98fea87ed41ea77abb28bKen Mixter directory_group) < 0) { 291a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Unable to create appropriate crash directory"; 2920340316050044e0995b98fea87ed41ea77abb28bKen Mixter return false; 2930340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 2940340316050044e0995b98fea87ed41ea77abb28bKen Mixter umask(old_mask); 2950340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 2960340316050044e0995b98fea87ed41ea77abb28bKen Mixter 2970340316050044e0995b98fea87ed41ea77abb28bKen Mixter if (!file_util::PathExists(*crash_directory)) { 298a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Unable to create crash directory " 299a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter << crash_directory->value().c_str(); 3000340316050044e0995b98fea87ed41ea77abb28bKen Mixter return false; 3010340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 3020340316050044e0995b98fea87ed41ea77abb28bKen Mixter 30304ec10fc93b08057657503559ecf511661b55c9fKen Mixter if (!CheckHasCapacity(*crash_directory)) { 304207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter if (out_of_capacity != NULL) *out_of_capacity = true; 30504ec10fc93b08057657503559ecf511661b55c9fKen Mixter return false; 30604ec10fc93b08057657503559ecf511661b55c9fKen Mixter } 30704ec10fc93b08057657503559ecf511661b55c9fKen Mixter 3080340316050044e0995b98fea87ed41ea77abb28bKen Mixter return true; 3090340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 31004ec10fc93b08057657503559ecf511661b55c9fKen Mixter 311426fcc0bd579a87102ea50fb570dbf9834fa2962Albert ChaulkFilePath CrashCollector::GetProcessPath(pid_t pid) { 312426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk return FilePath(StringPrintf("/proc/%d", pid)); 313426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk} 314426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk 315426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulkbool CrashCollector::GetSymlinkTarget(const FilePath &symlink, 316426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk FilePath *target) { 317426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk int max_size = 32; 318426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk scoped_array<char> buffer; 319426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk while (true) { 320426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk buffer.reset(new char[max_size + 1]); 321426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk ssize_t size = readlink(symlink.value().c_str(), buffer.get(), max_size); 322426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk if (size < 0) { 323426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk int saved_errno = errno; 324426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk LOG(ERROR) << "Readlink failed on " << symlink.value() << " with " 325426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk << saved_errno; 326426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk return false; 327426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } 328426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk buffer[size] = 0; 329426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk if (size == max_size) { 330426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk // Avoid overflow when doubling. 331426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk if (max_size * 2 > max_size) { 332426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk max_size *= 2; 333426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk continue; 334426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } else { 335426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk return false; 336426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } 337426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } 338426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk break; 339426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } 340426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk 341426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk *target = FilePath(buffer.get()); 342426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk return true; 343426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk} 344426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk 345426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulkbool CrashCollector::GetExecutableBaseNameFromPid(pid_t pid, 346426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk std::string *base_name) { 347426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk FilePath target; 348426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk FilePath process_path = GetProcessPath(pid); 349426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk FilePath exe_path = process_path.Append("exe"); 350426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk if (!GetSymlinkTarget(exe_path, &target)) { 351426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk LOG(INFO) << "GetSymlinkTarget failed - Path " << process_path.value() 352426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk << " DirectoryExists: " 353426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk << file_util::DirectoryExists(process_path); 354426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk // Try to further diagnose exe readlink failure cause. 355426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk struct stat buf; 356426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk int stat_result = stat(exe_path.value().c_str(), &buf); 357426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk int saved_errno = errno; 358426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk if (stat_result < 0) { 359426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk LOG(INFO) << "stat " << exe_path.value() << " failed: " << stat_result 360426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk << " " << saved_errno; 361426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } else { 362426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk LOG(INFO) << "stat " << exe_path.value() << " succeeded: st_mode=" 363426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk << buf.st_mode; 364426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } 365426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk return false; 366426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } 367426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk *base_name = target.BaseName().value(); 368426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk return true; 369426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk} 370426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk 37104ec10fc93b08057657503559ecf511661b55c9fKen Mixter// Return true if the given crash directory has not already reached 37204ec10fc93b08057657503559ecf511661b55c9fKen Mixter// maximum capacity. 37304ec10fc93b08057657503559ecf511661b55c9fKen Mixterbool CrashCollector::CheckHasCapacity(const FilePath &crash_directory) { 37404ec10fc93b08057657503559ecf511661b55c9fKen Mixter DIR* dir = opendir(crash_directory.value().c_str()); 37504ec10fc93b08057657503559ecf511661b55c9fKen Mixter if (!dir) { 37604ec10fc93b08057657503559ecf511661b55c9fKen Mixter return false; 37704ec10fc93b08057657503559ecf511661b55c9fKen Mixter } 37804ec10fc93b08057657503559ecf511661b55c9fKen Mixter struct dirent ent_buf; 37904ec10fc93b08057657503559ecf511661b55c9fKen Mixter struct dirent* ent; 38004ec10fc93b08057657503559ecf511661b55c9fKen Mixter bool full = false; 381ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::set<std::string> basenames; 38204ec10fc93b08057657503559ecf511661b55c9fKen Mixter while (readdir_r(dir, &ent_buf, &ent) == 0 && ent != NULL) { 38304ec10fc93b08057657503559ecf511661b55c9fKen Mixter if ((strcmp(ent->d_name, ".") == 0) || 38404ec10fc93b08057657503559ecf511661b55c9fKen Mixter (strcmp(ent->d_name, "..") == 0)) 38504ec10fc93b08057657503559ecf511661b55c9fKen Mixter continue; 38604ec10fc93b08057657503559ecf511661b55c9fKen Mixter 387ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::string filename(ent->d_name); 388ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter size_t last_dot = filename.rfind("."); 389ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::string basename; 390ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter // If there is a valid looking extension, use the base part of the 391ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter // name. If the only dot is the first byte (aka a dot file), treat 392ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter // it as unique to avoid allowing a directory full of dot files 393ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter // from accumulating. 394ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter if (last_dot != std::string::npos && last_dot != 0) 395ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter basename = filename.substr(0, last_dot); 396ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter else 397ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter basename = filename; 398ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter basenames.insert(basename); 39904ec10fc93b08057657503559ecf511661b55c9fKen Mixter 400ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter if (basenames.size() >= static_cast<size_t>(kMaxCrashDirectorySize)) { 401a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(WARNING) << "Crash directory " << crash_directory.value() 402a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter << " already full with " << kMaxCrashDirectorySize 403a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter << " pending reports"; 40404ec10fc93b08057657503559ecf511661b55c9fKen Mixter full = true; 40504ec10fc93b08057657503559ecf511661b55c9fKen Mixter break; 40604ec10fc93b08057657503559ecf511661b55c9fKen Mixter } 40704ec10fc93b08057657503559ecf511661b55c9fKen Mixter } 40804ec10fc93b08057657503559ecf511661b55c9fKen Mixter closedir(dir); 40904ec10fc93b08057657503559ecf511661b55c9fKen Mixter return !full; 41004ec10fc93b08057657503559ecf511661b55c9fKen Mixter} 411ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter 412c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixterbool CrashCollector::IsCommentLine(const std::string &line) { 413c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter size_t found = line.find_first_not_of(" "); 414c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter return found != std::string::npos && line[found] == '#'; 415c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter} 416c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter 417ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixterbool CrashCollector::ReadKeyValueFile( 418ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter const FilePath &path, 419ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter const char separator, 420ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::map<std::string, std::string> *dictionary) { 421ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::string contents; 422ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter if (!file_util::ReadFileToString(path, &contents)) { 423ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter return false; 424ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 425ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter typedef std::vector<std::string> StringVector; 426ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter StringVector lines; 4273ba6c5b65778964fe3f643ca9df6a17b41181bf2Chris Masone base::SplitString(contents, '\n', &lines); 428ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter bool any_errors = false; 429ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter for (StringVector::iterator line = lines.begin(); line != lines.end(); 430ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter ++line) { 431ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter // Allow empty strings. 432ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter if (line->empty()) 433ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter continue; 434c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter // Allow comment lines. 435c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter if (IsCommentLine(*line)) 436c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter continue; 437ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter StringVector sides; 4383ba6c5b65778964fe3f643ca9df6a17b41181bf2Chris Masone base::SplitString(*line, separator, &sides); 439ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter if (sides.size() != 2) { 440ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter any_errors = true; 441ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter continue; 442ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 443ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter dictionary->insert(std::pair<std::string, std::string>(sides[0], sides[1])); 444ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 445ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter return !any_errors; 446ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter} 447ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter 448c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixterbool CrashCollector::GetLogContents(const FilePath &config_path, 449c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter const std::string &exec_name, 450c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter const FilePath &output_file) { 451c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter std::map<std::string, std::string> log_commands; 452c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter if (!ReadKeyValueFile(config_path, ':', &log_commands)) { 453a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(INFO) << "Unable to read log configuration file " 454a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter << config_path.value(); 455c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter return false; 456c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter } 457c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter 458c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter if (log_commands.find(exec_name) == log_commands.end()) 459c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter return false; 460c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter 461a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter chromeos::ProcessImpl diag_process; 462a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter diag_process.AddArg(kShellPath); 463c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter std::string shell_command = log_commands[exec_name]; 464a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter diag_process.AddStringOption("-c", shell_command); 465a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter diag_process.RedirectOutput(output_file.value()); 466c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter 467a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter int result = diag_process.Run(); 468a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter if (result != 0) { 469a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(INFO) << "Running shell command " << shell_command << "failed with: " 470a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter << result; 471c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter return false; 472c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter } 473c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter return true; 474c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter} 475c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter 476afcf80821c57a189b53b7a66f76d13855d63821eKen Mixtervoid CrashCollector::AddCrashMetaData(const std::string &key, 477afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter const std::string &value) { 478afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter extra_metadata_.append(StringPrintf("%s=%s\n", key.c_str(), value.c_str())); 479afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter} 480afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter 481ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixtervoid CrashCollector::WriteCrashMetaData(const FilePath &meta_path, 482c909b6944602bd6c1eb6d3c54ec41b1a4fc57b07Ken Mixter const std::string &exec_name, 483c909b6944602bd6c1eb6d3c54ec41b1a4fc57b07Ken Mixter const std::string &payload_path) { 484ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::map<std::string, std::string> contents; 485afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter if (!ReadKeyValueFile(FilePath(std::string(lsb_release_)), '=', &contents)) { 486a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Problem parsing " << lsb_release_; 487ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter // Even though there was some failure, take as much as we could read. 488ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 489ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::string version("unknown"); 490ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::map<std::string, std::string>::iterator i; 491ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter if ((i = contents.find("CHROMEOS_RELEASE_VERSION")) != contents.end()) { 492ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter version = i->second; 493ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 494c909b6944602bd6c1eb6d3c54ec41b1a4fc57b07Ken Mixter int64 payload_size = -1; 495c909b6944602bd6c1eb6d3c54ec41b1a4fc57b07Ken Mixter file_util::GetFileSize(FilePath(payload_path), &payload_size); 496afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter std::string meta_data = StringPrintf("%sexec_name=%s\n" 497ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter "ver=%s\n" 498207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter "payload=%s\n" 49965b4c1efb0bca77f3a73401499adc5c39d982c18Mike Frysinger "payload_size=%"PRId64"\n" 500ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter "done=1\n", 501afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter extra_metadata_.c_str(), 502ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter exec_name.c_str(), 503c909b6944602bd6c1eb6d3c54ec41b1a4fc57b07Ken Mixter version.c_str(), 504207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter payload_path.c_str(), 505c909b6944602bd6c1eb6d3c54ec41b1a4fc57b07Ken Mixter payload_size); 5069b346474538a255bc7144ae358bb0ee129163d58Ken Mixter // We must use WriteNewFile instead of file_util::WriteFile as we 5079b346474538a255bc7144ae358bb0ee129163d58Ken Mixter // do not want to write with root access to a symlink that an attacker 5089b346474538a255bc7144ae358bb0ee129163d58Ken Mixter // might have created. 5099b346474538a255bc7144ae358bb0ee129163d58Ken Mixter if (WriteNewFile(meta_path, meta_data.c_str(), meta_data.size()) < 0) { 510a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Unable to write " << meta_path.value(); 511ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 512ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter} 5131652fb2cc2bc6d08ac3719fd3d90b43485d539feThieu Le 5141652fb2cc2bc6d08ac3719fd3d90b43485d539feThieu Lebool CrashCollector::IsCrashTestInProgress() { 5151652fb2cc2bc6d08ac3719fd3d90b43485d539feThieu Le return file_util::PathExists(FilePath(kCrashTestInProgressPath)); 5161652fb2cc2bc6d08ac3719fd3d90b43485d539feThieu Le} 5174fe30db1405498dd21162436eda081486f400fa8Michael Krebs 5184fe30db1405498dd21162436eda081486f400fa8Michael Krebsbool CrashCollector::IsDeveloperImage() { 5194fe30db1405498dd21162436eda081486f400fa8Michael Krebs // If we're testing crash reporter itself, we don't want to special-case 5204fe30db1405498dd21162436eda081486f400fa8Michael Krebs // for developer images. 5214fe30db1405498dd21162436eda081486f400fa8Michael Krebs if (IsCrashTestInProgress()) 5224fe30db1405498dd21162436eda081486f400fa8Michael Krebs return false; 5234fe30db1405498dd21162436eda081486f400fa8Michael Krebs return file_util::PathExists(FilePath(kLeaveCoreFile)); 5244fe30db1405498dd21162436eda081486f400fa8Michael Krebs} 5254fe30db1405498dd21162436eda081486f400fa8Michael Krebs 5264fe30db1405498dd21162436eda081486f400fa8Michael Krebsbool CrashCollector::ShouldHandleChromeCrashes() { 5274fe30db1405498dd21162436eda081486f400fa8Michael Krebs // If we're testing crash reporter itself, we don't want to allow an 5284fe30db1405498dd21162436eda081486f400fa8Michael Krebs // override for chrome crashes. And, let's be conservative and only 5294fe30db1405498dd21162436eda081486f400fa8Michael Krebs // allow an override for developer images. 5304fe30db1405498dd21162436eda081486f400fa8Michael Krebs if (!IsCrashTestInProgress() && IsDeveloperImage()) { 5314fe30db1405498dd21162436eda081486f400fa8Michael Krebs // Check if there's an override to indicate we should indeed collect 5324fe30db1405498dd21162436eda081486f400fa8Michael Krebs // chrome crashes. This allows the crashes to still be tracked when 5334fe30db1405498dd21162436eda081486f400fa8Michael Krebs // they occur in autotests. See "crosbug.com/17987". 5344fe30db1405498dd21162436eda081486f400fa8Michael Krebs if (file_util::PathExists(FilePath(kCollectChromeFile))) 5354fe30db1405498dd21162436eda081486f400fa8Michael Krebs return true; 5364fe30db1405498dd21162436eda081486f400fa8Michael Krebs } 5374fe30db1405498dd21162436eda081486f400fa8Michael Krebs // We default to ignoring chrome crashes. 5384fe30db1405498dd21162436eda081486f400fa8Michael Krebs return false; 5394fe30db1405498dd21162436eda081486f400fa8Michael Krebs} 5404fe30db1405498dd21162436eda081486f400fa8Michael Krebs 5414fe30db1405498dd21162436eda081486f400fa8Michael Krebsbool CrashCollector::IsUserSpecificDirectoryEnabled() { 5424fe30db1405498dd21162436eda081486f400fa8Michael Krebs return !ShouldHandleChromeCrashes(); 5434fe30db1405498dd21162436eda081486f400fa8Michael Krebs} 544