crash_collector.cc revision ab6cc90503ca2db976a3cb9c9382a9da85c4b5a2
1f70060c5e610ed0aa648dcb6aaea5d859834b8baSimon Que// Copyright (c) 2012 The Chromium OS Authors. All rights reserved. 20340316050044e0995b98fea87ed41ea77abb28bKen Mixter// Use of this source code is governed by a BSD-style license that can be 30340316050044e0995b98fea87ed41ea77abb28bKen Mixter// found in the LICENSE file. 40340316050044e0995b98fea87ed41ea77abb28bKen Mixter 50340316050044e0995b98fea87ed41ea77abb28bKen Mixter#include "crash-reporter/crash_collector.h" 60340316050044e0995b98fea87ed41ea77abb28bKen Mixter 704ec10fc93b08057657503559ecf511661b55c9fKen Mixter#include <dirent.h> 89b346474538a255bc7144ae358bb0ee129163d58Ken Mixter#include <fcntl.h> // For file creation modes. 97589aff9f0410512168914bda2d7640649858066Alex Vakulenko#define __STDC_FORMAT_MACROS // PRId64 107589aff9f0410512168914bda2d7640649858066Alex Vakulenko#include <inttypes.h> 11f3811f50c8783b24607c776844a3cf66c15c439fBen Chan#include <linux/limits.h> // PATH_MAX 120340316050044e0995b98fea87ed41ea77abb28bKen Mixter#include <pwd.h> // For struct passwd. 130340316050044e0995b98fea87ed41ea77abb28bKen Mixter#include <sys/types.h> // for mode_t. 149b346474538a255bc7144ae358bb0ee129163d58Ken Mixter#include <sys/wait.h> // For waitpid. 159b346474538a255bc7144ae358bb0ee129163d58Ken Mixter#include <unistd.h> // For execv and fork. 160340316050044e0995b98fea87ed41ea77abb28bKen Mixter 17ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter#include <set> 187e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <utility> 19f70060c5e610ed0aa648dcb6aaea5d859834b8baSimon Que#include <vector> 20ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter 21f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger#include <dbus/dbus-glib-lowlevel.h> 22f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger#include <glib.h> 23f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 24ab6cc90503ca2db976a3cb9c9382a9da85c4b5a2Ben Chan#include <base/files/file_util.h> 257e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <base/logging.h> 267e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <base/posix/eintr_wrapper.h> 277e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <base/strings/string_split.h> 287e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <base/strings/string_util.h> 297e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <base/strings/stringprintf.h> 307e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <chromeos/cryptohome.h> 317e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <chromeos/dbus/dbus.h> 327e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <chromeos/dbus/service_constants.h> 337e77690375bc8a896a8de318d69d515e67c7aefeBen Chan#include <chromeos/process.h> 340340316050044e0995b98fea87ed41ea77abb28bKen Mixter 354fe30db1405498dd21162436eda081486f400fa8Michael Krebsstatic const char kCollectChromeFile[] = 364fe30db1405498dd21162436eda081486f400fa8Michael Krebs "/mnt/stateful_partition/etc/collect_chrome_crashes"; 374fe30db1405498dd21162436eda081486f400fa8Michael Krebsstatic const char kCrashTestInProgressPath[] = "/tmp/crash-test-in-progress"; 38f70060c5e610ed0aa648dcb6aaea5d859834b8baSimon Questatic const char kDefaultLogConfig[] = "/etc/crash_reporter_logs.conf"; 390340316050044e0995b98fea87ed41ea77abb28bKen Mixterstatic const char kDefaultUserName[] = "chronos"; 404fe30db1405498dd21162436eda081486f400fa8Michael Krebsstatic const char kLeaveCoreFile[] = "/root/.leave_core"; 41ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixterstatic const char kLsbRelease[] = "/etc/lsb-release"; 42c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixterstatic const char kShellPath[] = "/bin/sh"; 430340316050044e0995b98fea87ed41ea77abb28bKen Mixterstatic const char kSystemCrashPath[] = "/var/spool/crash"; 4433dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulkstatic const char kUploadVarPrefix[] = "upload_var_"; 4533dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulkstatic const char kUploadFilePrefix[] = "upload_file_"; 46f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// Normally this path is not used. Unfortunately, there are a few edge cases 47f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// where we need this. Any process that runs as kDefaultUserName that crashes 48f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// is consider a "user crash". That includes the initial Chrome browser that 49f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// runs the login screen. If that blows up, there is no logged in user yet, 50f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// so there is no per-user dir for us to stash things in. Instead we fallback 51f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// to this path as it is at least encrypted on a per-system basis. 52f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// 53f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// This also comes up when running autotests. The GUI is sitting at the login 54f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// screen while tests are sshing in, changing users, and triggering crashes as 55f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger// the user (purposefully). 56f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysingerstatic const char kFallbackUserCrashPath[] = "/home/chronos/crash"; 570340316050044e0995b98fea87ed41ea77abb28bKen Mixter 580340316050044e0995b98fea87ed41ea77abb28bKen Mixter// Directory mode of the user crash spool directory. 590340316050044e0995b98fea87ed41ea77abb28bKen Mixterstatic const mode_t kUserCrashPathMode = 0755; 600340316050044e0995b98fea87ed41ea77abb28bKen Mixter 610340316050044e0995b98fea87ed41ea77abb28bKen Mixter// Directory mode of the system crash spool directory. 620340316050044e0995b98fea87ed41ea77abb28bKen Mixterstatic const mode_t kSystemCrashPathMode = 01755; 630340316050044e0995b98fea87ed41ea77abb28bKen Mixter 640340316050044e0995b98fea87ed41ea77abb28bKen Mixterstatic const uid_t kRootOwner = 0; 650340316050044e0995b98fea87ed41ea77abb28bKen Mixterstatic const uid_t kRootGroup = 0; 660340316050044e0995b98fea87ed41ea77abb28bKen Mixter 67da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// Maximum crash reports per crash spool directory. Note that this is 68da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// a separate maximum from the maximum rate at which we upload these 69da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// diagnostics. The higher this rate is, the more space we allow for 70da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// core files, minidumps, and kcrash logs, and equivalently the more 71da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// processor and I/O bandwidth we dedicate to handling these crashes when 72da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// many occur at once. Also note that if core files are configured to 73da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// be left on the file system, we stop adding crashes when either the 74da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// number of core files or minidumps reaches this number. 75da5db7a8304e22af6c57733460516857e9211b32Ken Mixterconst int CrashCollector::kMaxCrashDirectorySize = 32; 7604ec10fc93b08057657503559ecf511661b55c9fKen Mixter 779f90acaa4d420530d7b4ddd37112518df68e373aSimon Queusing base::FilePath; 78a557c1187ff19d422db2a9c951ecd8f7243e79bdMike Frysingerusing base::StringPrintf; 799f90acaa4d420530d7b4ddd37112518df68e373aSimon Que 80afcf80821c57a189b53b7a66f76d13855d63821eKen MixterCrashCollector::CrashCollector() 819b1f300139689eb9c7b7a35e91a4fbc1eab93b4eLei Zhang : lsb_release_(kLsbRelease), 82acc7938ede0e3c07a2d1809f82b174b51f7ab7c5Simon Que log_config_path_(kDefaultLogConfig) { 830340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 840340316050044e0995b98fea87ed41ea77abb28bKen Mixter 850340316050044e0995b98fea87ed41ea77abb28bKen MixterCrashCollector::~CrashCollector() { 860340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 870340316050044e0995b98fea87ed41ea77abb28bKen Mixter 880340316050044e0995b98fea87ed41ea77abb28bKen Mixtervoid CrashCollector::Initialize( 890340316050044e0995b98fea87ed41ea77abb28bKen Mixter CrashCollector::CountCrashFunction count_crash_function, 90a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter CrashCollector::IsFeedbackAllowedFunction is_feedback_allowed_function) { 910340316050044e0995b98fea87ed41ea77abb28bKen Mixter CHECK(count_crash_function != NULL); 920340316050044e0995b98fea87ed41ea77abb28bKen Mixter CHECK(is_feedback_allowed_function != NULL); 930340316050044e0995b98fea87ed41ea77abb28bKen Mixter 940340316050044e0995b98fea87ed41ea77abb28bKen Mixter count_crash_function_ = count_crash_function; 950340316050044e0995b98fea87ed41ea77abb28bKen Mixter is_feedback_allowed_function_ = is_feedback_allowed_function; 960340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 970340316050044e0995b98fea87ed41ea77abb28bKen Mixter 989b346474538a255bc7144ae358bb0ee129163d58Ken Mixterint CrashCollector::WriteNewFile(const FilePath &filename, 999b346474538a255bc7144ae358bb0ee129163d58Ken Mixter const char *data, 1009b346474538a255bc7144ae358bb0ee129163d58Ken Mixter int size) { 1019b346474538a255bc7144ae358bb0ee129163d58Ken Mixter int fd = HANDLE_EINTR(open(filename.value().c_str(), 1029b346474538a255bc7144ae358bb0ee129163d58Ken Mixter O_CREAT | O_WRONLY | O_TRUNC | O_EXCL, 0666)); 1039b346474538a255bc7144ae358bb0ee129163d58Ken Mixter if (fd < 0) { 1049b346474538a255bc7144ae358bb0ee129163d58Ken Mixter return -1; 1059b346474538a255bc7144ae358bb0ee129163d58Ken Mixter } 1069b346474538a255bc7144ae358bb0ee129163d58Ken Mixter 107f30c641225e55055641ffe3fd679a96e44f34af6Ben Chan int rv = base::WriteFileDescriptor(fd, data, size); 108f1a5014637180457af21cc40a5ca64ab18a6947bMike Frysinger IGNORE_EINTR(close(fd)); 1099b346474538a255bc7144ae358bb0ee129163d58Ken Mixter return rv; 1109b346474538a255bc7144ae358bb0ee129163d58Ken Mixter} 1119b346474538a255bc7144ae358bb0ee129163d58Ken Mixter 112ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixterstd::string CrashCollector::Sanitize(const std::string &name) { 1139895096f8b8046456bec96292f9c547b11913248Thiemo Nagel // Make sure the sanitized name does not include any periods. 1149895096f8b8046456bec96292f9c547b11913248Thiemo Nagel // The logic in crash_sender relies on this. 115ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::string result = name; 116ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter for (size_t i = 0; i < name.size(); ++i) { 117ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter if (!isalnum(result[i]) && result[i] != '_') 118ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter result[i] = '_'; 119ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 120ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter return result; 121ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter} 122ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter 1230340316050044e0995b98fea87ed41ea77abb28bKen Mixterstd::string CrashCollector::FormatDumpBasename(const std::string &exec_name, 1240340316050044e0995b98fea87ed41ea77abb28bKen Mixter time_t timestamp, 1250340316050044e0995b98fea87ed41ea77abb28bKen Mixter pid_t pid) { 1260340316050044e0995b98fea87ed41ea77abb28bKen Mixter struct tm tm; 1270340316050044e0995b98fea87ed41ea77abb28bKen Mixter localtime_r(×tamp, &tm); 128ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::string sanitized_exec_name = Sanitize(exec_name); 1290340316050044e0995b98fea87ed41ea77abb28bKen Mixter return StringPrintf("%s.%04d%02d%02d.%02d%02d%02d.%d", 130ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter sanitized_exec_name.c_str(), 1310340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_year + 1900, 1320340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_mon + 1, 1330340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_mday, 1340340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_hour, 1350340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_min, 1360340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_sec, 1370340316050044e0995b98fea87ed41ea77abb28bKen Mixter pid); 1380340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 1390340316050044e0995b98fea87ed41ea77abb28bKen Mixter 140207694d3f491ef602a859c30cc1379584f2d61cfKen MixterFilePath CrashCollector::GetCrashPath(const FilePath &crash_directory, 141207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter const std::string &basename, 142207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter const std::string &extension) { 143207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter return crash_directory.Append(StringPrintf("%s.%s", 144207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter basename.c_str(), 145207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter extension.c_str())); 146207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter} 147207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter 148f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysingernamespace { 149f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 150f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysingerconst char *GetGErrorMessage(const GError *error) { 151f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger if (!error) 152f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return "Unknown error."; 153f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return error->message; 154f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger} 155f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 156f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger} 157f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 158efec0b3625f447995d2ed79b946d2929039313c9Ben ChanGHashTable *CrashCollector::GetActiveUserSessions() { 159f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger GHashTable *active_sessions = NULL; 160f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 161f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger chromeos::dbus::BusConnection dbus = chromeos::dbus::GetSystemBusConnection(); 162f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger if (!dbus.HasConnection()) { 163f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger LOG(ERROR) << "Error connecting to system D-Bus"; 164f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return active_sessions; 165f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger } 166f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger chromeos::dbus::Proxy proxy(dbus, 167f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger login_manager::kSessionManagerServiceName, 168f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger login_manager::kSessionManagerServicePath, 169f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger login_manager::kSessionManagerInterface); 170f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger if (!proxy) { 171f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger LOG(ERROR) << "Error creating D-Bus proxy to interface " 172f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger << "'" << login_manager::kSessionManagerServiceName << "'"; 173f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return active_sessions; 174f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger } 175f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 176f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger // Request all the active sessions. 177f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger GError *gerror = NULL; 178f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger if (!dbus_g_proxy_call(proxy.gproxy(), 179f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger login_manager::kSessionManagerRetrieveActiveSessions, 180f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger &gerror, G_TYPE_INVALID, 181f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger DBUS_TYPE_G_STRING_STRING_HASHTABLE, &active_sessions, 182f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger G_TYPE_INVALID)) { 183f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger LOG(ERROR) << "Error performing D-Bus proxy call " 184f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger << "'" 185f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger << login_manager::kSessionManagerRetrieveActiveSessions << "'" 186f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger << ": " << GetGErrorMessage(gerror); 187f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return active_sessions; 188f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger } 189f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 190f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return active_sessions; 191f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger} 192f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 193efec0b3625f447995d2ed79b946d2929039313c9Ben ChanFilePath CrashCollector::GetUserCrashPath() { 194f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger // In this multiprofile world, there is no one-specific user dir anymore. 195f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger // Ask the session manager for the active ones, then just run with the 196f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger // first result we get back. 197f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger FilePath user_path = FilePath(kFallbackUserCrashPath); 198f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger GHashTable *active_sessions = GetActiveUserSessions(); 199f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger if (!active_sessions) 200f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return user_path; 201f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 202f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger GList *list = g_hash_table_get_values(active_sessions); 203f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger if (list) { 204f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger const char *salted_path = static_cast<const char *>(list->data); 20537843a9f8a46cd5afa57505bdb6d75aa1a75c9d2Mike Frysinger user_path = chromeos::cryptohome::home::GetHashedUserPath(salted_path) 20637843a9f8a46cd5afa57505bdb6d75aa1a75c9d2Mike Frysinger .Append("crash"); 207f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger g_list_free(list); 208f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger } 209f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 210f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger g_hash_table_destroy(active_sessions); 211f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 212f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return user_path; 213f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger} 214f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger 2150340316050044e0995b98fea87ed41ea77abb28bKen MixterFilePath CrashCollector::GetCrashDirectoryInfo( 2160340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t process_euid, 2170340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t default_user_id, 2180340316050044e0995b98fea87ed41ea77abb28bKen Mixter gid_t default_user_group, 2190340316050044e0995b98fea87ed41ea77abb28bKen Mixter mode_t *mode, 2200340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t *directory_owner, 2210340316050044e0995b98fea87ed41ea77abb28bKen Mixter gid_t *directory_group) { 2224fe30db1405498dd21162436eda081486f400fa8Michael Krebs // TODO(mkrebs): This can go away once Chrome crashes are handled 2234fe30db1405498dd21162436eda081486f400fa8Michael Krebs // normally (see crosbug.com/5872). 2244fe30db1405498dd21162436eda081486f400fa8Michael Krebs // Check if the user crash directory should be used. If we are 2254fe30db1405498dd21162436eda081486f400fa8Michael Krebs // collecting chrome crashes during autotesting, we want to put them in 2264fe30db1405498dd21162436eda081486f400fa8Michael Krebs // the system crash directory so they are outside the cryptohome -- in 2274fe30db1405498dd21162436eda081486f400fa8Michael Krebs // case we are being run during logout (see crosbug.com/18637). 2284fe30db1405498dd21162436eda081486f400fa8Michael Krebs if (process_euid == default_user_id && IsUserSpecificDirectoryEnabled()) { 2290340316050044e0995b98fea87ed41ea77abb28bKen Mixter *mode = kUserCrashPathMode; 2300340316050044e0995b98fea87ed41ea77abb28bKen Mixter *directory_owner = default_user_id; 2310340316050044e0995b98fea87ed41ea77abb28bKen Mixter *directory_group = default_user_group; 232f19b518532cb2ab8fc1ed77381809f24a30ac4caMike Frysinger return GetUserCrashPath(); 2330340316050044e0995b98fea87ed41ea77abb28bKen Mixter } else { 2340340316050044e0995b98fea87ed41ea77abb28bKen Mixter *mode = kSystemCrashPathMode; 2350340316050044e0995b98fea87ed41ea77abb28bKen Mixter *directory_owner = kRootOwner; 2360340316050044e0995b98fea87ed41ea77abb28bKen Mixter *directory_group = kRootGroup; 2370340316050044e0995b98fea87ed41ea77abb28bKen Mixter return FilePath(kSystemCrashPath); 2380340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 2390340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 2400340316050044e0995b98fea87ed41ea77abb28bKen Mixter 2410340316050044e0995b98fea87ed41ea77abb28bKen Mixterbool CrashCollector::GetUserInfoFromName(const std::string &name, 2420340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t *uid, 2430340316050044e0995b98fea87ed41ea77abb28bKen Mixter gid_t *gid) { 2440340316050044e0995b98fea87ed41ea77abb28bKen Mixter char storage[256]; 2450340316050044e0995b98fea87ed41ea77abb28bKen Mixter struct passwd passwd_storage; 2460340316050044e0995b98fea87ed41ea77abb28bKen Mixter struct passwd *passwd_result = NULL; 2470340316050044e0995b98fea87ed41ea77abb28bKen Mixter 2480340316050044e0995b98fea87ed41ea77abb28bKen Mixter if (getpwnam_r(name.c_str(), &passwd_storage, storage, sizeof(storage), 2490340316050044e0995b98fea87ed41ea77abb28bKen Mixter &passwd_result) != 0 || passwd_result == NULL) { 250a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Cannot find user named " << name; 2510340316050044e0995b98fea87ed41ea77abb28bKen Mixter return false; 2520340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 2530340316050044e0995b98fea87ed41ea77abb28bKen Mixter 2540340316050044e0995b98fea87ed41ea77abb28bKen Mixter *uid = passwd_result->pw_uid; 2550340316050044e0995b98fea87ed41ea77abb28bKen Mixter *gid = passwd_result->pw_gid; 2560340316050044e0995b98fea87ed41ea77abb28bKen Mixter return true; 2570340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 2580340316050044e0995b98fea87ed41ea77abb28bKen Mixter 2590340316050044e0995b98fea87ed41ea77abb28bKen Mixterbool CrashCollector::GetCreatedCrashDirectoryByEuid(uid_t euid, 260207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter FilePath *crash_directory, 261207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter bool *out_of_capacity) { 2620340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t default_user_id; 2630340316050044e0995b98fea87ed41ea77abb28bKen Mixter gid_t default_user_group; 2640340316050044e0995b98fea87ed41ea77abb28bKen Mixter 265207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter if (out_of_capacity != NULL) *out_of_capacity = false; 266207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter 2670340316050044e0995b98fea87ed41ea77abb28bKen Mixter // For testing. 2689b1f300139689eb9c7b7a35e91a4fbc1eab93b4eLei Zhang if (!forced_crash_directory_.empty()) { 2699b1f300139689eb9c7b7a35e91a4fbc1eab93b4eLei Zhang *crash_directory = forced_crash_directory_; 2700340316050044e0995b98fea87ed41ea77abb28bKen Mixter return true; 2710340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 2720340316050044e0995b98fea87ed41ea77abb28bKen Mixter 2730340316050044e0995b98fea87ed41ea77abb28bKen Mixter if (!GetUserInfoFromName(kDefaultUserName, 2740340316050044e0995b98fea87ed41ea77abb28bKen Mixter &default_user_id, 2750340316050044e0995b98fea87ed41ea77abb28bKen Mixter &default_user_group)) { 276a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Could not find default user info"; 2770340316050044e0995b98fea87ed41ea77abb28bKen Mixter return false; 2780340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 2790340316050044e0995b98fea87ed41ea77abb28bKen Mixter mode_t directory_mode; 2800340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t directory_owner; 2810340316050044e0995b98fea87ed41ea77abb28bKen Mixter gid_t directory_group; 2820340316050044e0995b98fea87ed41ea77abb28bKen Mixter *crash_directory = 2830340316050044e0995b98fea87ed41ea77abb28bKen Mixter GetCrashDirectoryInfo(euid, 2840340316050044e0995b98fea87ed41ea77abb28bKen Mixter default_user_id, 2850340316050044e0995b98fea87ed41ea77abb28bKen Mixter default_user_group, 2860340316050044e0995b98fea87ed41ea77abb28bKen Mixter &directory_mode, 2870340316050044e0995b98fea87ed41ea77abb28bKen Mixter &directory_owner, 2880340316050044e0995b98fea87ed41ea77abb28bKen Mixter &directory_group); 2890340316050044e0995b98fea87ed41ea77abb28bKen Mixter 290a557c1187ff19d422db2a9c951ecd8f7243e79bdMike Frysinger if (!base::PathExists(*crash_directory)) { 2910340316050044e0995b98fea87ed41ea77abb28bKen Mixter // Create the spool directory with the appropriate mode (regardless of 2920340316050044e0995b98fea87ed41ea77abb28bKen Mixter // umask) and ownership. 2930340316050044e0995b98fea87ed41ea77abb28bKen Mixter mode_t old_mask = umask(0); 2940340316050044e0995b98fea87ed41ea77abb28bKen Mixter if (mkdir(crash_directory->value().c_str(), directory_mode) < 0 || 2950340316050044e0995b98fea87ed41ea77abb28bKen Mixter chown(crash_directory->value().c_str(), 2960340316050044e0995b98fea87ed41ea77abb28bKen Mixter directory_owner, 2970340316050044e0995b98fea87ed41ea77abb28bKen Mixter directory_group) < 0) { 298a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Unable to create appropriate crash directory"; 2990340316050044e0995b98fea87ed41ea77abb28bKen Mixter return false; 3000340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 3010340316050044e0995b98fea87ed41ea77abb28bKen Mixter umask(old_mask); 3020340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 3030340316050044e0995b98fea87ed41ea77abb28bKen Mixter 304a557c1187ff19d422db2a9c951ecd8f7243e79bdMike Frysinger if (!base::PathExists(*crash_directory)) { 305a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Unable to create crash directory " 306a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter << crash_directory->value().c_str(); 3070340316050044e0995b98fea87ed41ea77abb28bKen Mixter return false; 3080340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 3090340316050044e0995b98fea87ed41ea77abb28bKen Mixter 31004ec10fc93b08057657503559ecf511661b55c9fKen Mixter if (!CheckHasCapacity(*crash_directory)) { 311207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter if (out_of_capacity != NULL) *out_of_capacity = true; 31204ec10fc93b08057657503559ecf511661b55c9fKen Mixter return false; 31304ec10fc93b08057657503559ecf511661b55c9fKen Mixter } 31404ec10fc93b08057657503559ecf511661b55c9fKen Mixter 3150340316050044e0995b98fea87ed41ea77abb28bKen Mixter return true; 3160340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 31704ec10fc93b08057657503559ecf511661b55c9fKen Mixter 318426fcc0bd579a87102ea50fb570dbf9834fa2962Albert ChaulkFilePath CrashCollector::GetProcessPath(pid_t pid) { 319426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk return FilePath(StringPrintf("/proc/%d", pid)); 320426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk} 321426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk 322426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulkbool CrashCollector::GetSymlinkTarget(const FilePath &symlink, 3238563d20e108c3801f107d640c9b161f1099e6bebBen Chan FilePath *target) { 324f3811f50c8783b24607c776844a3cf66c15c439fBen Chan ssize_t max_size = 64; 325f3811f50c8783b24607c776844a3cf66c15c439fBen Chan std::vector<char> buffer; 326f3811f50c8783b24607c776844a3cf66c15c439fBen Chan 327426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk while (true) { 328f3811f50c8783b24607c776844a3cf66c15c439fBen Chan buffer.resize(max_size + 1); 329f3811f50c8783b24607c776844a3cf66c15c439fBen Chan ssize_t size = readlink(symlink.value().c_str(), buffer.data(), max_size); 330426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk if (size < 0) { 331426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk int saved_errno = errno; 332426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk LOG(ERROR) << "Readlink failed on " << symlink.value() << " with " 333426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk << saved_errno; 334426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk return false; 335426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } 336f3811f50c8783b24607c776844a3cf66c15c439fBen Chan 337426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk buffer[size] = 0; 338426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk if (size == max_size) { 339f3811f50c8783b24607c776844a3cf66c15c439fBen Chan max_size *= 2; 340f3811f50c8783b24607c776844a3cf66c15c439fBen Chan if (max_size > PATH_MAX) { 341426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk return false; 342426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } 343f3811f50c8783b24607c776844a3cf66c15c439fBen Chan continue; 344426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } 345426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk break; 346426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } 347426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk 348f3811f50c8783b24607c776844a3cf66c15c439fBen Chan *target = FilePath(buffer.data()); 349426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk return true; 350426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk} 351426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk 352426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulkbool CrashCollector::GetExecutableBaseNameFromPid(pid_t pid, 353426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk std::string *base_name) { 354426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk FilePath target; 355426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk FilePath process_path = GetProcessPath(pid); 356426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk FilePath exe_path = process_path.Append("exe"); 357426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk if (!GetSymlinkTarget(exe_path, &target)) { 358426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk LOG(INFO) << "GetSymlinkTarget failed - Path " << process_path.value() 359426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk << " DirectoryExists: " 360a557c1187ff19d422db2a9c951ecd8f7243e79bdMike Frysinger << base::DirectoryExists(process_path); 361426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk // Try to further diagnose exe readlink failure cause. 362426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk struct stat buf; 363426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk int stat_result = stat(exe_path.value().c_str(), &buf); 364426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk int saved_errno = errno; 365426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk if (stat_result < 0) { 366426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk LOG(INFO) << "stat " << exe_path.value() << " failed: " << stat_result 367426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk << " " << saved_errno; 368426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } else { 369426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk LOG(INFO) << "stat " << exe_path.value() << " succeeded: st_mode=" 370426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk << buf.st_mode; 371426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } 372426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk return false; 373426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk } 374426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk *base_name = target.BaseName().value(); 375426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk return true; 376426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk} 377426fcc0bd579a87102ea50fb570dbf9834fa2962Albert Chaulk 37804ec10fc93b08057657503559ecf511661b55c9fKen Mixter// Return true if the given crash directory has not already reached 37904ec10fc93b08057657503559ecf511661b55c9fKen Mixter// maximum capacity. 38004ec10fc93b08057657503559ecf511661b55c9fKen Mixterbool CrashCollector::CheckHasCapacity(const FilePath &crash_directory) { 38104ec10fc93b08057657503559ecf511661b55c9fKen Mixter DIR* dir = opendir(crash_directory.value().c_str()); 38204ec10fc93b08057657503559ecf511661b55c9fKen Mixter if (!dir) { 38304ec10fc93b08057657503559ecf511661b55c9fKen Mixter return false; 38404ec10fc93b08057657503559ecf511661b55c9fKen Mixter } 38504ec10fc93b08057657503559ecf511661b55c9fKen Mixter struct dirent ent_buf; 38604ec10fc93b08057657503559ecf511661b55c9fKen Mixter struct dirent* ent; 38704ec10fc93b08057657503559ecf511661b55c9fKen Mixter bool full = false; 388ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::set<std::string> basenames; 38904ec10fc93b08057657503559ecf511661b55c9fKen Mixter while (readdir_r(dir, &ent_buf, &ent) == 0 && ent != NULL) { 39004ec10fc93b08057657503559ecf511661b55c9fKen Mixter if ((strcmp(ent->d_name, ".") == 0) || 39104ec10fc93b08057657503559ecf511661b55c9fKen Mixter (strcmp(ent->d_name, "..") == 0)) 39204ec10fc93b08057657503559ecf511661b55c9fKen Mixter continue; 39304ec10fc93b08057657503559ecf511661b55c9fKen Mixter 394ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::string filename(ent->d_name); 395ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter size_t last_dot = filename.rfind("."); 396ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::string basename; 397ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter // If there is a valid looking extension, use the base part of the 398ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter // name. If the only dot is the first byte (aka a dot file), treat 399ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter // it as unique to avoid allowing a directory full of dot files 400ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter // from accumulating. 401ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter if (last_dot != std::string::npos && last_dot != 0) 402ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter basename = filename.substr(0, last_dot); 403ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter else 404ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter basename = filename; 405ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter basenames.insert(basename); 40604ec10fc93b08057657503559ecf511661b55c9fKen Mixter 407ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter if (basenames.size() >= static_cast<size_t>(kMaxCrashDirectorySize)) { 408a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(WARNING) << "Crash directory " << crash_directory.value() 409a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter << " already full with " << kMaxCrashDirectorySize 410a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter << " pending reports"; 41104ec10fc93b08057657503559ecf511661b55c9fKen Mixter full = true; 41204ec10fc93b08057657503559ecf511661b55c9fKen Mixter break; 41304ec10fc93b08057657503559ecf511661b55c9fKen Mixter } 41404ec10fc93b08057657503559ecf511661b55c9fKen Mixter } 41504ec10fc93b08057657503559ecf511661b55c9fKen Mixter closedir(dir); 41604ec10fc93b08057657503559ecf511661b55c9fKen Mixter return !full; 41704ec10fc93b08057657503559ecf511661b55c9fKen Mixter} 418ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter 419c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixterbool CrashCollector::IsCommentLine(const std::string &line) { 420c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter size_t found = line.find_first_not_of(" "); 421c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter return found != std::string::npos && line[found] == '#'; 422c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter} 423c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter 424ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixterbool CrashCollector::ReadKeyValueFile( 425ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter const FilePath &path, 426ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter const char separator, 427ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::map<std::string, std::string> *dictionary) { 428ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::string contents; 429a557c1187ff19d422db2a9c951ecd8f7243e79bdMike Frysinger if (!base::ReadFileToString(path, &contents)) { 430ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter return false; 431ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 432ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter typedef std::vector<std::string> StringVector; 433ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter StringVector lines; 4343ba6c5b65778964fe3f643ca9df6a17b41181bf2Chris Masone base::SplitString(contents, '\n', &lines); 435ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter bool any_errors = false; 436ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter for (StringVector::iterator line = lines.begin(); line != lines.end(); 437ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter ++line) { 438ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter // Allow empty strings. 439ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter if (line->empty()) 440ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter continue; 441c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter // Allow comment lines. 442c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter if (IsCommentLine(*line)) 443c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter continue; 444ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter StringVector sides; 4453ba6c5b65778964fe3f643ca9df6a17b41181bf2Chris Masone base::SplitString(*line, separator, &sides); 446ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter if (sides.size() != 2) { 447ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter any_errors = true; 448ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter continue; 449ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 450ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter dictionary->insert(std::pair<std::string, std::string>(sides[0], sides[1])); 451ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 452ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter return !any_errors; 453ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter} 454ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter 455c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixterbool CrashCollector::GetLogContents(const FilePath &config_path, 456c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter const std::string &exec_name, 457c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter const FilePath &output_file) { 458c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter std::map<std::string, std::string> log_commands; 459c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter if (!ReadKeyValueFile(config_path, ':', &log_commands)) { 460a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(INFO) << "Unable to read log configuration file " 461a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter << config_path.value(); 462c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter return false; 463c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter } 464c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter 465c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter if (log_commands.find(exec_name) == log_commands.end()) 466c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter return false; 467c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter 468a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter chromeos::ProcessImpl diag_process; 469a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter diag_process.AddArg(kShellPath); 470c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter std::string shell_command = log_commands[exec_name]; 471a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter diag_process.AddStringOption("-c", shell_command); 472a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter diag_process.RedirectOutput(output_file.value()); 473c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter 474a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter int result = diag_process.Run(); 475a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter if (result != 0) { 476a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(INFO) << "Running shell command " << shell_command << "failed with: " 477a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter << result; 478c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter return false; 479c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter } 480c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter return true; 481c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter} 482c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter 483afcf80821c57a189b53b7a66f76d13855d63821eKen Mixtervoid CrashCollector::AddCrashMetaData(const std::string &key, 484afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter const std::string &value) { 485afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter extra_metadata_.append(StringPrintf("%s=%s\n", key.c_str(), value.c_str())); 486afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter} 487afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter 48833dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulkvoid CrashCollector::AddCrashMetaUploadFile(const std::string &key, 48933dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk const std::string &path) { 49033dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk if (!path.empty()) 49133dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk AddCrashMetaData(kUploadFilePrefix + key, path); 49233dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk} 49333dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk 49433dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulkvoid CrashCollector::AddCrashMetaUploadData(const std::string &key, 49533dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk const std::string &value) { 49633dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk if (!value.empty()) 49733dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk AddCrashMetaData(kUploadVarPrefix + key, value); 49833dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk} 49933dfd47146c14bbdf57494051fe1c1c50949305fAlbert Chaulk 500ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixtervoid CrashCollector::WriteCrashMetaData(const FilePath &meta_path, 501c909b6944602bd6c1eb6d3c54ec41b1a4fc57b07Ken Mixter const std::string &exec_name, 502c909b6944602bd6c1eb6d3c54ec41b1a4fc57b07Ken Mixter const std::string &payload_path) { 503ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::map<std::string, std::string> contents; 5049b1f300139689eb9c7b7a35e91a4fbc1eab93b4eLei Zhang if (!ReadKeyValueFile(FilePath(lsb_release_), '=', &contents)) { 505a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Problem parsing " << lsb_release_; 506ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter // Even though there was some failure, take as much as we could read. 507ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 508ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::string version("unknown"); 509ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::map<std::string, std::string>::iterator i; 510ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter if ((i = contents.find("CHROMEOS_RELEASE_VERSION")) != contents.end()) { 511ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter version = i->second; 512ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 513f84ea21aab3c1c6ef1f358534e5c437878675d74Ben Chan int64_t payload_size = -1; 514a557c1187ff19d422db2a9c951ecd8f7243e79bdMike Frysinger base::GetFileSize(FilePath(payload_path), &payload_size); 515afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter std::string meta_data = StringPrintf("%sexec_name=%s\n" 516ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter "ver=%s\n" 517207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter "payload=%s\n" 518eaf060c265f4cd84eb718b625b3670987e155a1bAlex Vakulenko "payload_size=%" PRId64 "\n" 519ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter "done=1\n", 520afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter extra_metadata_.c_str(), 521ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter exec_name.c_str(), 522c909b6944602bd6c1eb6d3c54ec41b1a4fc57b07Ken Mixter version.c_str(), 523207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter payload_path.c_str(), 524c909b6944602bd6c1eb6d3c54ec41b1a4fc57b07Ken Mixter payload_size); 525f30c641225e55055641ffe3fd679a96e44f34af6Ben Chan // We must use WriteNewFile instead of base::WriteFile as we 5269b346474538a255bc7144ae358bb0ee129163d58Ken Mixter // do not want to write with root access to a symlink that an attacker 5279b346474538a255bc7144ae358bb0ee129163d58Ken Mixter // might have created. 5289b346474538a255bc7144ae358bb0ee129163d58Ken Mixter if (WriteNewFile(meta_path, meta_data.c_str(), meta_data.size()) < 0) { 529a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Unable to write " << meta_path.value(); 530ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 531ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter} 5321652fb2cc2bc6d08ac3719fd3d90b43485d539feThieu Le 5331652fb2cc2bc6d08ac3719fd3d90b43485d539feThieu Lebool CrashCollector::IsCrashTestInProgress() { 534a557c1187ff19d422db2a9c951ecd8f7243e79bdMike Frysinger return base::PathExists(FilePath(kCrashTestInProgressPath)); 5351652fb2cc2bc6d08ac3719fd3d90b43485d539feThieu Le} 5364fe30db1405498dd21162436eda081486f400fa8Michael Krebs 5374fe30db1405498dd21162436eda081486f400fa8Michael Krebsbool CrashCollector::IsDeveloperImage() { 5384fe30db1405498dd21162436eda081486f400fa8Michael Krebs // If we're testing crash reporter itself, we don't want to special-case 5394fe30db1405498dd21162436eda081486f400fa8Michael Krebs // for developer images. 5404fe30db1405498dd21162436eda081486f400fa8Michael Krebs if (IsCrashTestInProgress()) 5414fe30db1405498dd21162436eda081486f400fa8Michael Krebs return false; 542a557c1187ff19d422db2a9c951ecd8f7243e79bdMike Frysinger return base::PathExists(FilePath(kLeaveCoreFile)); 5434fe30db1405498dd21162436eda081486f400fa8Michael Krebs} 5444fe30db1405498dd21162436eda081486f400fa8Michael Krebs 5454fe30db1405498dd21162436eda081486f400fa8Michael Krebsbool CrashCollector::ShouldHandleChromeCrashes() { 5464fe30db1405498dd21162436eda081486f400fa8Michael Krebs // If we're testing crash reporter itself, we don't want to allow an 5474fe30db1405498dd21162436eda081486f400fa8Michael Krebs // override for chrome crashes. And, let's be conservative and only 5484fe30db1405498dd21162436eda081486f400fa8Michael Krebs // allow an override for developer images. 5494fe30db1405498dd21162436eda081486f400fa8Michael Krebs if (!IsCrashTestInProgress() && IsDeveloperImage()) { 5504fe30db1405498dd21162436eda081486f400fa8Michael Krebs // Check if there's an override to indicate we should indeed collect 5514fe30db1405498dd21162436eda081486f400fa8Michael Krebs // chrome crashes. This allows the crashes to still be tracked when 5524fe30db1405498dd21162436eda081486f400fa8Michael Krebs // they occur in autotests. See "crosbug.com/17987". 553a557c1187ff19d422db2a9c951ecd8f7243e79bdMike Frysinger if (base::PathExists(FilePath(kCollectChromeFile))) 5544fe30db1405498dd21162436eda081486f400fa8Michael Krebs return true; 5554fe30db1405498dd21162436eda081486f400fa8Michael Krebs } 5564fe30db1405498dd21162436eda081486f400fa8Michael Krebs // We default to ignoring chrome crashes. 5574fe30db1405498dd21162436eda081486f400fa8Michael Krebs return false; 5584fe30db1405498dd21162436eda081486f400fa8Michael Krebs} 5594fe30db1405498dd21162436eda081486f400fa8Michael Krebs 5604fe30db1405498dd21162436eda081486f400fa8Michael Krebsbool CrashCollector::IsUserSpecificDirectoryEnabled() { 5614fe30db1405498dd21162436eda081486f400fa8Michael Krebs return !ShouldHandleChromeCrashes(); 5624fe30db1405498dd21162436eda081486f400fa8Michael Krebs} 563