crash_collector.cc revision a324932e066ccb7ed9d62db9c409ee2c10052554
10340316050044e0995b98fea87ed41ea77abb28bKen Mixter// Copyright (c) 2010 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. 130340316050044e0995b98fea87ed41ea77abb28bKen Mixter 14ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter#include <set> 15ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter 169b346474538a255bc7144ae358bb0ee129163d58Ken Mixter#include "base/eintr_wrapper.h" 170340316050044e0995b98fea87ed41ea77abb28bKen Mixter#include "base/file_util.h" 180340316050044e0995b98fea87ed41ea77abb28bKen Mixter#include "base/logging.h" 190340316050044e0995b98fea87ed41ea77abb28bKen Mixter#include "base/string_util.h" 20a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter#include "chromeos/process.h" 210340316050044e0995b98fea87ed41ea77abb28bKen Mixter 220340316050044e0995b98fea87ed41ea77abb28bKen Mixterstatic const char kDefaultUserName[] = "chronos"; 23ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixterstatic const char kLsbRelease[] = "/etc/lsb-release"; 24c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixterstatic const char kShellPath[] = "/bin/sh"; 250340316050044e0995b98fea87ed41ea77abb28bKen Mixterstatic const char kSystemCrashPath[] = "/var/spool/crash"; 260340316050044e0995b98fea87ed41ea77abb28bKen Mixterstatic const char kUserCrashPath[] = "/home/chronos/user/crash"; 270340316050044e0995b98fea87ed41ea77abb28bKen Mixter 280340316050044e0995b98fea87ed41ea77abb28bKen Mixter// Directory mode of the user crash spool directory. 290340316050044e0995b98fea87ed41ea77abb28bKen Mixterstatic const mode_t kUserCrashPathMode = 0755; 300340316050044e0995b98fea87ed41ea77abb28bKen Mixter 310340316050044e0995b98fea87ed41ea77abb28bKen Mixter// Directory mode of the system crash spool directory. 320340316050044e0995b98fea87ed41ea77abb28bKen Mixterstatic const mode_t kSystemCrashPathMode = 01755; 330340316050044e0995b98fea87ed41ea77abb28bKen Mixter 340340316050044e0995b98fea87ed41ea77abb28bKen Mixterstatic const uid_t kRootOwner = 0; 350340316050044e0995b98fea87ed41ea77abb28bKen Mixterstatic const uid_t kRootGroup = 0; 360340316050044e0995b98fea87ed41ea77abb28bKen Mixter 37da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// Maximum crash reports per crash spool directory. Note that this is 38da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// a separate maximum from the maximum rate at which we upload these 39da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// diagnostics. The higher this rate is, the more space we allow for 40da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// core files, minidumps, and kcrash logs, and equivalently the more 41da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// processor and I/O bandwidth we dedicate to handling these crashes when 42da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// many occur at once. Also note that if core files are configured to 43da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// be left on the file system, we stop adding crashes when either the 44da5db7a8304e22af6c57733460516857e9211b32Ken Mixter// number of core files or minidumps reaches this number. 45da5db7a8304e22af6c57733460516857e9211b32Ken Mixterconst int CrashCollector::kMaxCrashDirectorySize = 32; 4604ec10fc93b08057657503559ecf511661b55c9fKen Mixter 47afcf80821c57a189b53b7a66f76d13855d63821eKen MixterCrashCollector::CrashCollector() 48afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter : forced_crash_directory_(NULL), 49afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter lsb_release_(kLsbRelease) { 500340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 510340316050044e0995b98fea87ed41ea77abb28bKen Mixter 520340316050044e0995b98fea87ed41ea77abb28bKen MixterCrashCollector::~CrashCollector() { 530340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 540340316050044e0995b98fea87ed41ea77abb28bKen Mixter 550340316050044e0995b98fea87ed41ea77abb28bKen Mixtervoid CrashCollector::Initialize( 560340316050044e0995b98fea87ed41ea77abb28bKen Mixter CrashCollector::CountCrashFunction count_crash_function, 57a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter CrashCollector::IsFeedbackAllowedFunction is_feedback_allowed_function) { 580340316050044e0995b98fea87ed41ea77abb28bKen Mixter CHECK(count_crash_function != NULL); 590340316050044e0995b98fea87ed41ea77abb28bKen Mixter CHECK(is_feedback_allowed_function != NULL); 600340316050044e0995b98fea87ed41ea77abb28bKen Mixter 610340316050044e0995b98fea87ed41ea77abb28bKen Mixter count_crash_function_ = count_crash_function; 620340316050044e0995b98fea87ed41ea77abb28bKen Mixter is_feedback_allowed_function_ = is_feedback_allowed_function; 630340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 640340316050044e0995b98fea87ed41ea77abb28bKen Mixter 659b346474538a255bc7144ae358bb0ee129163d58Ken Mixterint CrashCollector::WriteNewFile(const FilePath &filename, 669b346474538a255bc7144ae358bb0ee129163d58Ken Mixter const char *data, 679b346474538a255bc7144ae358bb0ee129163d58Ken Mixter int size) { 689b346474538a255bc7144ae358bb0ee129163d58Ken Mixter int fd = HANDLE_EINTR(open(filename.value().c_str(), 699b346474538a255bc7144ae358bb0ee129163d58Ken Mixter O_CREAT | O_WRONLY | O_TRUNC | O_EXCL, 0666)); 709b346474538a255bc7144ae358bb0ee129163d58Ken Mixter if (fd < 0) { 719b346474538a255bc7144ae358bb0ee129163d58Ken Mixter return -1; 729b346474538a255bc7144ae358bb0ee129163d58Ken Mixter } 739b346474538a255bc7144ae358bb0ee129163d58Ken Mixter 749b346474538a255bc7144ae358bb0ee129163d58Ken Mixter int rv = file_util::WriteFileDescriptor(fd, data, size); 759b346474538a255bc7144ae358bb0ee129163d58Ken Mixter HANDLE_EINTR(close(fd)); 769b346474538a255bc7144ae358bb0ee129163d58Ken Mixter return rv; 779b346474538a255bc7144ae358bb0ee129163d58Ken Mixter} 789b346474538a255bc7144ae358bb0ee129163d58Ken Mixter 79ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixterstd::string CrashCollector::Sanitize(const std::string &name) { 80ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::string result = name; 81ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter for (size_t i = 0; i < name.size(); ++i) { 82ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter if (!isalnum(result[i]) && result[i] != '_') 83ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter result[i] = '_'; 84ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 85ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter return result; 86ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter} 87ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter 880340316050044e0995b98fea87ed41ea77abb28bKen Mixterstd::string CrashCollector::FormatDumpBasename(const std::string &exec_name, 890340316050044e0995b98fea87ed41ea77abb28bKen Mixter time_t timestamp, 900340316050044e0995b98fea87ed41ea77abb28bKen Mixter pid_t pid) { 910340316050044e0995b98fea87ed41ea77abb28bKen Mixter struct tm tm; 920340316050044e0995b98fea87ed41ea77abb28bKen Mixter localtime_r(×tamp, &tm); 93ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::string sanitized_exec_name = Sanitize(exec_name); 940340316050044e0995b98fea87ed41ea77abb28bKen Mixter return StringPrintf("%s.%04d%02d%02d.%02d%02d%02d.%d", 95ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter sanitized_exec_name.c_str(), 960340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_year + 1900, 970340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_mon + 1, 980340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_mday, 990340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_hour, 1000340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_min, 1010340316050044e0995b98fea87ed41ea77abb28bKen Mixter tm.tm_sec, 1020340316050044e0995b98fea87ed41ea77abb28bKen Mixter pid); 1030340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 1040340316050044e0995b98fea87ed41ea77abb28bKen Mixter 105207694d3f491ef602a859c30cc1379584f2d61cfKen MixterFilePath CrashCollector::GetCrashPath(const FilePath &crash_directory, 106207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter const std::string &basename, 107207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter const std::string &extension) { 108207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter return crash_directory.Append(StringPrintf("%s.%s", 109207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter basename.c_str(), 110207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter extension.c_str())); 111207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter} 112207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter 1130340316050044e0995b98fea87ed41ea77abb28bKen MixterFilePath CrashCollector::GetCrashDirectoryInfo( 1140340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t process_euid, 1150340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t default_user_id, 1160340316050044e0995b98fea87ed41ea77abb28bKen Mixter gid_t default_user_group, 1170340316050044e0995b98fea87ed41ea77abb28bKen Mixter mode_t *mode, 1180340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t *directory_owner, 1190340316050044e0995b98fea87ed41ea77abb28bKen Mixter gid_t *directory_group) { 1200340316050044e0995b98fea87ed41ea77abb28bKen Mixter if (process_euid == default_user_id) { 1210340316050044e0995b98fea87ed41ea77abb28bKen Mixter *mode = kUserCrashPathMode; 1220340316050044e0995b98fea87ed41ea77abb28bKen Mixter *directory_owner = default_user_id; 1230340316050044e0995b98fea87ed41ea77abb28bKen Mixter *directory_group = default_user_group; 1240340316050044e0995b98fea87ed41ea77abb28bKen Mixter return FilePath(kUserCrashPath); 1250340316050044e0995b98fea87ed41ea77abb28bKen Mixter } else { 1260340316050044e0995b98fea87ed41ea77abb28bKen Mixter *mode = kSystemCrashPathMode; 1270340316050044e0995b98fea87ed41ea77abb28bKen Mixter *directory_owner = kRootOwner; 1280340316050044e0995b98fea87ed41ea77abb28bKen Mixter *directory_group = kRootGroup; 1290340316050044e0995b98fea87ed41ea77abb28bKen Mixter return FilePath(kSystemCrashPath); 1300340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 1310340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 1320340316050044e0995b98fea87ed41ea77abb28bKen Mixter 1330340316050044e0995b98fea87ed41ea77abb28bKen Mixterbool CrashCollector::GetUserInfoFromName(const std::string &name, 1340340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t *uid, 1350340316050044e0995b98fea87ed41ea77abb28bKen Mixter gid_t *gid) { 1360340316050044e0995b98fea87ed41ea77abb28bKen Mixter char storage[256]; 1370340316050044e0995b98fea87ed41ea77abb28bKen Mixter struct passwd passwd_storage; 1380340316050044e0995b98fea87ed41ea77abb28bKen Mixter struct passwd *passwd_result = NULL; 1390340316050044e0995b98fea87ed41ea77abb28bKen Mixter 1400340316050044e0995b98fea87ed41ea77abb28bKen Mixter if (getpwnam_r(name.c_str(), &passwd_storage, storage, sizeof(storage), 1410340316050044e0995b98fea87ed41ea77abb28bKen Mixter &passwd_result) != 0 || passwd_result == NULL) { 142a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Cannot find user named " << name; 1430340316050044e0995b98fea87ed41ea77abb28bKen Mixter return false; 1440340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 1450340316050044e0995b98fea87ed41ea77abb28bKen Mixter 1460340316050044e0995b98fea87ed41ea77abb28bKen Mixter *uid = passwd_result->pw_uid; 1470340316050044e0995b98fea87ed41ea77abb28bKen Mixter *gid = passwd_result->pw_gid; 1480340316050044e0995b98fea87ed41ea77abb28bKen Mixter return true; 1490340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 1500340316050044e0995b98fea87ed41ea77abb28bKen Mixter 1510340316050044e0995b98fea87ed41ea77abb28bKen Mixterbool CrashCollector::GetCreatedCrashDirectoryByEuid(uid_t euid, 152207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter FilePath *crash_directory, 153207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter bool *out_of_capacity) { 1540340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t default_user_id; 1550340316050044e0995b98fea87ed41ea77abb28bKen Mixter gid_t default_user_group; 1560340316050044e0995b98fea87ed41ea77abb28bKen Mixter 157207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter if (out_of_capacity != NULL) *out_of_capacity = false; 158207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter 1590340316050044e0995b98fea87ed41ea77abb28bKen Mixter // For testing. 1600340316050044e0995b98fea87ed41ea77abb28bKen Mixter if (forced_crash_directory_ != NULL) { 1610340316050044e0995b98fea87ed41ea77abb28bKen Mixter *crash_directory = FilePath(forced_crash_directory_); 1620340316050044e0995b98fea87ed41ea77abb28bKen Mixter return true; 1630340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 1640340316050044e0995b98fea87ed41ea77abb28bKen Mixter 1650340316050044e0995b98fea87ed41ea77abb28bKen Mixter if (!GetUserInfoFromName(kDefaultUserName, 1660340316050044e0995b98fea87ed41ea77abb28bKen Mixter &default_user_id, 1670340316050044e0995b98fea87ed41ea77abb28bKen Mixter &default_user_group)) { 168a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Could not find default user info"; 1690340316050044e0995b98fea87ed41ea77abb28bKen Mixter return false; 1700340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 1710340316050044e0995b98fea87ed41ea77abb28bKen Mixter mode_t directory_mode; 1720340316050044e0995b98fea87ed41ea77abb28bKen Mixter uid_t directory_owner; 1730340316050044e0995b98fea87ed41ea77abb28bKen Mixter gid_t directory_group; 1740340316050044e0995b98fea87ed41ea77abb28bKen Mixter *crash_directory = 1750340316050044e0995b98fea87ed41ea77abb28bKen Mixter GetCrashDirectoryInfo(euid, 1760340316050044e0995b98fea87ed41ea77abb28bKen Mixter default_user_id, 1770340316050044e0995b98fea87ed41ea77abb28bKen Mixter default_user_group, 1780340316050044e0995b98fea87ed41ea77abb28bKen Mixter &directory_mode, 1790340316050044e0995b98fea87ed41ea77abb28bKen Mixter &directory_owner, 1800340316050044e0995b98fea87ed41ea77abb28bKen Mixter &directory_group); 1810340316050044e0995b98fea87ed41ea77abb28bKen Mixter 1820340316050044e0995b98fea87ed41ea77abb28bKen Mixter if (!file_util::PathExists(*crash_directory)) { 1830340316050044e0995b98fea87ed41ea77abb28bKen Mixter // Create the spool directory with the appropriate mode (regardless of 1840340316050044e0995b98fea87ed41ea77abb28bKen Mixter // umask) and ownership. 1850340316050044e0995b98fea87ed41ea77abb28bKen Mixter mode_t old_mask = umask(0); 1860340316050044e0995b98fea87ed41ea77abb28bKen Mixter if (mkdir(crash_directory->value().c_str(), directory_mode) < 0 || 1870340316050044e0995b98fea87ed41ea77abb28bKen Mixter chown(crash_directory->value().c_str(), 1880340316050044e0995b98fea87ed41ea77abb28bKen Mixter directory_owner, 1890340316050044e0995b98fea87ed41ea77abb28bKen Mixter directory_group) < 0) { 190a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Unable to create appropriate crash directory"; 1910340316050044e0995b98fea87ed41ea77abb28bKen Mixter return false; 1920340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 1930340316050044e0995b98fea87ed41ea77abb28bKen Mixter umask(old_mask); 1940340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 1950340316050044e0995b98fea87ed41ea77abb28bKen Mixter 1960340316050044e0995b98fea87ed41ea77abb28bKen Mixter if (!file_util::PathExists(*crash_directory)) { 197a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Unable to create crash directory " 198a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter << crash_directory->value().c_str(); 1990340316050044e0995b98fea87ed41ea77abb28bKen Mixter return false; 2000340316050044e0995b98fea87ed41ea77abb28bKen Mixter } 2010340316050044e0995b98fea87ed41ea77abb28bKen Mixter 20204ec10fc93b08057657503559ecf511661b55c9fKen Mixter if (!CheckHasCapacity(*crash_directory)) { 203207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter if (out_of_capacity != NULL) *out_of_capacity = true; 20404ec10fc93b08057657503559ecf511661b55c9fKen Mixter return false; 20504ec10fc93b08057657503559ecf511661b55c9fKen Mixter } 20604ec10fc93b08057657503559ecf511661b55c9fKen Mixter 2070340316050044e0995b98fea87ed41ea77abb28bKen Mixter return true; 2080340316050044e0995b98fea87ed41ea77abb28bKen Mixter} 20904ec10fc93b08057657503559ecf511661b55c9fKen Mixter 21004ec10fc93b08057657503559ecf511661b55c9fKen Mixter// Return true if the given crash directory has not already reached 21104ec10fc93b08057657503559ecf511661b55c9fKen Mixter// maximum capacity. 21204ec10fc93b08057657503559ecf511661b55c9fKen Mixterbool CrashCollector::CheckHasCapacity(const FilePath &crash_directory) { 21304ec10fc93b08057657503559ecf511661b55c9fKen Mixter DIR* dir = opendir(crash_directory.value().c_str()); 21404ec10fc93b08057657503559ecf511661b55c9fKen Mixter if (!dir) { 21504ec10fc93b08057657503559ecf511661b55c9fKen Mixter return false; 21604ec10fc93b08057657503559ecf511661b55c9fKen Mixter } 21704ec10fc93b08057657503559ecf511661b55c9fKen Mixter struct dirent ent_buf; 21804ec10fc93b08057657503559ecf511661b55c9fKen Mixter struct dirent* ent; 21904ec10fc93b08057657503559ecf511661b55c9fKen Mixter bool full = false; 220ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::set<std::string> basenames; 22104ec10fc93b08057657503559ecf511661b55c9fKen Mixter while (readdir_r(dir, &ent_buf, &ent) == 0 && ent != NULL) { 22204ec10fc93b08057657503559ecf511661b55c9fKen Mixter if ((strcmp(ent->d_name, ".") == 0) || 22304ec10fc93b08057657503559ecf511661b55c9fKen Mixter (strcmp(ent->d_name, "..") == 0)) 22404ec10fc93b08057657503559ecf511661b55c9fKen Mixter continue; 22504ec10fc93b08057657503559ecf511661b55c9fKen Mixter 226ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::string filename(ent->d_name); 227ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter size_t last_dot = filename.rfind("."); 228ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::string basename; 229ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter // If there is a valid looking extension, use the base part of the 230ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter // name. If the only dot is the first byte (aka a dot file), treat 231ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter // it as unique to avoid allowing a directory full of dot files 232ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter // from accumulating. 233ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter if (last_dot != std::string::npos && last_dot != 0) 234ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter basename = filename.substr(0, last_dot); 235ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter else 236ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter basename = filename; 237ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter basenames.insert(basename); 23804ec10fc93b08057657503559ecf511661b55c9fKen Mixter 239ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter if (basenames.size() >= static_cast<size_t>(kMaxCrashDirectorySize)) { 240a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(WARNING) << "Crash directory " << crash_directory.value() 241a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter << " already full with " << kMaxCrashDirectorySize 242a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter << " pending reports"; 24304ec10fc93b08057657503559ecf511661b55c9fKen Mixter full = true; 24404ec10fc93b08057657503559ecf511661b55c9fKen Mixter break; 24504ec10fc93b08057657503559ecf511661b55c9fKen Mixter } 24604ec10fc93b08057657503559ecf511661b55c9fKen Mixter } 24704ec10fc93b08057657503559ecf511661b55c9fKen Mixter closedir(dir); 24804ec10fc93b08057657503559ecf511661b55c9fKen Mixter return !full; 24904ec10fc93b08057657503559ecf511661b55c9fKen Mixter} 250ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter 251c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixterbool CrashCollector::IsCommentLine(const std::string &line) { 252c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter size_t found = line.find_first_not_of(" "); 253c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter return found != std::string::npos && line[found] == '#'; 254c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter} 255c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter 256ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixterbool CrashCollector::ReadKeyValueFile( 257ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter const FilePath &path, 258ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter const char separator, 259ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::map<std::string, std::string> *dictionary) { 260ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::string contents; 261ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter if (!file_util::ReadFileToString(path, &contents)) { 262ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter return false; 263ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 264ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter typedef std::vector<std::string> StringVector; 265ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter StringVector lines; 266ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter SplitString(contents, '\n', &lines); 267ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter bool any_errors = false; 268ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter for (StringVector::iterator line = lines.begin(); line != lines.end(); 269ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter ++line) { 270ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter // Allow empty strings. 271ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter if (line->empty()) 272ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter continue; 273c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter // Allow comment lines. 274c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter if (IsCommentLine(*line)) 275c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter continue; 276ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter StringVector sides; 277ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter SplitString(*line, separator, &sides); 278ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter if (sides.size() != 2) { 279ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter any_errors = true; 280ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter continue; 281ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 282ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter dictionary->insert(std::pair<std::string, std::string>(sides[0], sides[1])); 283ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 284ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter return !any_errors; 285ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter} 286ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter 287c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixterbool CrashCollector::GetLogContents(const FilePath &config_path, 288c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter const std::string &exec_name, 289c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter const FilePath &output_file) { 290c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter std::map<std::string, std::string> log_commands; 291c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter if (!ReadKeyValueFile(config_path, ':', &log_commands)) { 292a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(INFO) << "Unable to read log configuration file " 293a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter << config_path.value(); 294c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter return false; 295c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter } 296c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter 297c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter if (log_commands.find(exec_name) == log_commands.end()) 298c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter return false; 299c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter 300a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter chromeos::ProcessImpl diag_process; 301a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter diag_process.AddArg(kShellPath); 302c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter std::string shell_command = log_commands[exec_name]; 303a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter diag_process.AddStringOption("-c", shell_command); 304a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter diag_process.RedirectOutput(output_file.value()); 305c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter 306a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter int result = diag_process.Run(); 307a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter if (result != 0) { 308a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(INFO) << "Running shell command " << shell_command << "failed with: " 309a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter << result; 310c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter return false; 311c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter } 312c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter return true; 313c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter} 314c49dbd4775986f32b2f09659595f9f28ef7f6b44Ken Mixter 315afcf80821c57a189b53b7a66f76d13855d63821eKen Mixtervoid CrashCollector::AddCrashMetaData(const std::string &key, 316afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter const std::string &value) { 317afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter extra_metadata_.append(StringPrintf("%s=%s\n", key.c_str(), value.c_str())); 318afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter} 319afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter 320ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixtervoid CrashCollector::WriteCrashMetaData(const FilePath &meta_path, 321c909b6944602bd6c1eb6d3c54ec41b1a4fc57b07Ken Mixter const std::string &exec_name, 322c909b6944602bd6c1eb6d3c54ec41b1a4fc57b07Ken Mixter const std::string &payload_path) { 323ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::map<std::string, std::string> contents; 324afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter if (!ReadKeyValueFile(FilePath(std::string(lsb_release_)), '=', &contents)) { 325a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Problem parsing " << lsb_release_; 326ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter // Even though there was some failure, take as much as we could read. 327ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 328ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::string version("unknown"); 329ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter std::map<std::string, std::string>::iterator i; 330ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter if ((i = contents.find("CHROMEOS_RELEASE_VERSION")) != contents.end()) { 331ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter version = i->second; 332ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 333c909b6944602bd6c1eb6d3c54ec41b1a4fc57b07Ken Mixter int64 payload_size = -1; 334c909b6944602bd6c1eb6d3c54ec41b1a4fc57b07Ken Mixter file_util::GetFileSize(FilePath(payload_path), &payload_size); 335afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter std::string meta_data = StringPrintf("%sexec_name=%s\n" 336ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter "ver=%s\n" 337207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter "payload=%s\n" 338c909b6944602bd6c1eb6d3c54ec41b1a4fc57b07Ken Mixter "payload_size=%lld\n" 339ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter "done=1\n", 340afcf80821c57a189b53b7a66f76d13855d63821eKen Mixter extra_metadata_.c_str(), 341ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter exec_name.c_str(), 342c909b6944602bd6c1eb6d3c54ec41b1a4fc57b07Ken Mixter version.c_str(), 343207694d3f491ef602a859c30cc1379584f2d61cfKen Mixter payload_path.c_str(), 344c909b6944602bd6c1eb6d3c54ec41b1a4fc57b07Ken Mixter payload_size); 3459b346474538a255bc7144ae358bb0ee129163d58Ken Mixter // We must use WriteNewFile instead of file_util::WriteFile as we 3469b346474538a255bc7144ae358bb0ee129163d58Ken Mixter // do not want to write with root access to a symlink that an attacker 3479b346474538a255bc7144ae358bb0ee129163d58Ken Mixter // might have created. 3489b346474538a255bc7144ae358bb0ee129163d58Ken Mixter if (WriteNewFile(meta_path, meta_data.c_str(), meta_data.size()) < 0) { 349a324932e066ccb7ed9d62db9c409ee2c10052554Ken Mixter LOG(ERROR) << "Unable to write " << meta_path.value(); 350ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter } 351ee849c5ef4c416cb0321483fa10c92f8aada3179Ken Mixter} 352