robert.swiecki | 3bb518c | 2010-10-14 00:48:24 +0000 | [diff] [blame] | 1 | /* |
robert.swiecki | 3bb518c | 2010-10-14 00:48:24 +0000 | [diff] [blame] | 2 | |
Robert Swiecki | c8c32db | 2015-10-09 18:06:22 +0200 | [diff] [blame] | 3 | nsjail - logging |
| 4 | ----------------------------------------- |
| 5 | |
| 6 | Copyright 2014 Google Inc. All Rights Reserved. |
| 7 | |
| 8 | Licensed under the Apache License, Version 2.0 (the "License"); |
| 9 | you may not use this file except in compliance with the License. |
| 10 | You may obtain a copy of the License at |
| 11 | |
| 12 | http://www.apache.org/licenses/LICENSE-2.0 |
| 13 | |
| 14 | Unless required by applicable law or agreed to in writing, software |
| 15 | distributed under the License is distributed on an "AS IS" BASIS, |
| 16 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 17 | See the License for the specific language governing permissions and |
| 18 | limitations under the License. |
| 19 | |
| 20 | */ |
Jagger | 0326734 | 2016-03-11 02:40:47 +0100 | [diff] [blame] | 21 | |
| 22 | #include "common.h" |
robert.swiecki@gmail.com | ba85c3e | 2015-02-02 14:55:16 +0000 | [diff] [blame] | 23 | #include "log.h" |
| 24 | |
robert.swiecki@gmail.com | ba85c3e | 2015-02-02 14:55:16 +0000 | [diff] [blame] | 25 | #include <errno.h> |
Robert Swiecki | c8c32db | 2015-10-09 18:06:22 +0200 | [diff] [blame] | 26 | #include <fcntl.h> |
| 27 | #include <getopt.h> |
| 28 | #include <limits.h> |
Jagger | 9402137 | 2015-10-11 17:01:53 +0200 | [diff] [blame] | 29 | #include <pthread.h> |
robert.swiecki@gmail.com | ba85c3e | 2015-02-02 14:55:16 +0000 | [diff] [blame] | 30 | #include <stdarg.h> |
| 31 | #include <stdio.h> |
| 32 | #include <stdlib.h> |
robert.swiecki | 3bb518c | 2010-10-14 00:48:24 +0000 | [diff] [blame] | 33 | #include <string.h> |
Robert Swiecki | c8c32db | 2015-10-09 18:06:22 +0200 | [diff] [blame] | 34 | #include <sys/stat.h> |
robert.swiecki@gmail.com | dfde1c7 | 2015-02-18 13:22:55 +0000 | [diff] [blame] | 35 | #include <sys/types.h> |
robert.swiecki | 3bb518c | 2010-10-14 00:48:24 +0000 | [diff] [blame] | 36 | #include <time.h> |
robert.swiecki@gmail.com | ebc1cac | 2011-07-02 03:15:51 +0000 | [diff] [blame] | 37 | #include <unistd.h> |
robert.swiecki | 3bb518c | 2010-10-14 00:48:24 +0000 | [diff] [blame] | 38 | |
Anestis Bechtsoudis | c947332 | 2015-10-09 12:59:17 -0700 | [diff] [blame] | 39 | #if defined(_HF_ARCH_LINUX) |
| 40 | #include <sys/syscall.h> |
| 41 | #define __hf_pid() (pid_t) syscall(__NR_gettid) |
| 42 | #else /* defined(_HF_ARCH_LINUX) */ |
| 43 | #define __hf_pid() getpid() |
| 44 | #endif /* defined(_HF_ARCH_LINUX) */ |
| 45 | |
Robert Swiecki | 1c04003 | 2016-02-16 18:51:23 +0100 | [diff] [blame] | 46 | static int log_fd; |
| 47 | static bool log_fd_isatty; |
| 48 | enum llevel_t log_level; |
Jagger | 9402137 | 2015-10-11 17:01:53 +0200 | [diff] [blame] | 49 | pthread_mutex_t log_mutex = PTHREAD_MUTEX_INITIALIZER; |
robert.swiecki@gmail.com | 6f31991 | 2015-02-28 05:01:37 +0000 | [diff] [blame] | 50 | |
Robert Swiecki | 1c04003 | 2016-02-16 18:51:23 +0100 | [diff] [blame] | 51 | __attribute__ ((constructor)) |
| 52 | static void log_init(void) |
| 53 | { |
| 54 | log_level = INFO; |
Robert Swiecki | 54a195d | 2016-03-16 16:34:32 +0100 | [diff] [blame] | 55 | log_fd = fcntl(STDERR_FILENO, F_DUPFD_CLOEXEC, 0); |
| 56 | if (log_fd == -1) { |
| 57 | log_fd = STDERR_FILENO; |
| 58 | } |
Robert Swiecki | 1c04003 | 2016-02-16 18:51:23 +0100 | [diff] [blame] | 59 | log_fd_isatty = isatty(log_fd); |
| 60 | } |
| 61 | |
Robert Swiecki | c8c32db | 2015-10-09 18:06:22 +0200 | [diff] [blame] | 62 | /* |
| 63 | * Log to stderr by default. Use a dup()d fd, because in the future we'll associate the |
| 64 | * connection socket with fd (0, 1, 2). |
| 65 | */ |
| 66 | bool logInitLogFile(const char *logfile, enum llevel_t ll) |
robert.swiecki | 3bb518c | 2010-10-14 00:48:24 +0000 | [diff] [blame] | 67 | { |
Robert Swiecki | c8c32db | 2015-10-09 18:06:22 +0200 | [diff] [blame] | 68 | log_level = ll; |
Jagger | 9402137 | 2015-10-11 17:01:53 +0200 | [diff] [blame] | 69 | |
Robert Swiecki | c8c32db | 2015-10-09 18:06:22 +0200 | [diff] [blame] | 70 | if (logfile == NULL) { |
Robert Swiecki | c8c32db | 2015-10-09 18:06:22 +0200 | [diff] [blame] | 71 | return true; |
| 72 | } |
Jagger | 9402137 | 2015-10-11 17:01:53 +0200 | [diff] [blame] | 73 | |
Robert Swiecki | c8c32db | 2015-10-09 18:06:22 +0200 | [diff] [blame] | 74 | log_fd = open(logfile, O_CREAT | O_RDWR | O_APPEND, 0640); |
| 75 | if (log_fd == -1) { |
| 76 | log_fd = STDERR_FILENO; |
| 77 | PLOG_E("Couldn't open logfile open('%s')", logfile); |
| 78 | return false; |
| 79 | } |
| 80 | log_fd_isatty = (isatty(log_fd) == 1 ? true : false); |
| 81 | return true; |
robert.swiecki | 3bb518c | 2010-10-14 00:48:24 +0000 | [diff] [blame] | 82 | } |
| 83 | |
Robert Swiecki | c8c32db | 2015-10-09 18:06:22 +0200 | [diff] [blame] | 84 | void logLog(enum llevel_t ll, const char *fn, int ln, bool perr, const char *fmt, ...) |
Robert Swiecki | 30254b8 | 2015-10-08 16:36:08 +0200 | [diff] [blame] | 85 | { |
robert.swiecki | 3bb518c | 2010-10-14 00:48:24 +0000 | [diff] [blame] | 86 | char strerr[512]; |
Robert Swiecki | c8c32db | 2015-10-09 18:06:22 +0200 | [diff] [blame] | 87 | if (perr == true) { |
robert.swiecki@gmail.com | 528fa20 | 2011-06-22 17:25:07 +0000 | [diff] [blame] | 88 | snprintf(strerr, sizeof(strerr), "%s", strerror(errno)); |
robert.swiecki | 3bb518c | 2010-10-14 00:48:24 +0000 | [diff] [blame] | 89 | } |
Robert Swiecki | c8c32db | 2015-10-09 18:06:22 +0200 | [diff] [blame] | 90 | struct ll_t { |
| 91 | char *descr; |
| 92 | char *prefix; |
| 93 | bool print_funcline; |
| 94 | }; |
| 95 | struct ll_t logLevels[] = { |
Robert Swiecki | a88f96f | 2015-10-09 16:47:39 +0200 | [diff] [blame] | 96 | {"F", "\033[7;35m", true}, |
| 97 | {"E", "\033[1;31m", true}, |
| 98 | {"W", "\033[0;33m", true}, |
| 99 | {"I", "\033[1m", true}, |
| 100 | {"D", "\033[0;4m", true}, |
Robert Swiecki | c8c32db | 2015-10-09 18:06:22 +0200 | [diff] [blame] | 101 | {"HR", "\033[0m", false}, |
| 102 | {"HB", "\033[1m", false}, |
Robert Swiecki | c8c32db | 2015-10-09 18:06:22 +0200 | [diff] [blame] | 103 | }; |
robert.swiecki | 3bb518c | 2010-10-14 00:48:24 +0000 | [diff] [blame] | 104 | |
Robert Swiecki | c8c32db | 2015-10-09 18:06:22 +0200 | [diff] [blame] | 105 | time_t ltstamp = time(NULL); |
| 106 | struct tm utctime; |
| 107 | localtime_r(<stamp, &utctime); |
| 108 | char timestr[32]; |
| 109 | if (strftime(timestr, sizeof(timestr) - 1, "%FT%T%z", &utctime) == 0) { |
| 110 | timestr[0] = '\0'; |
robert.swiecki@gmail.com | ebc1cac | 2011-07-02 03:15:51 +0000 | [diff] [blame] | 111 | } |
robert.swiecki@gmail.com | dfde1c7 | 2015-02-18 13:22:55 +0000 | [diff] [blame] | 112 | |
Robert Swiecki | c8c32db | 2015-10-09 18:06:22 +0200 | [diff] [blame] | 113 | /* Start printing logs */ |
Robert Swiecki | a9db9dd | 2016-03-09 16:29:37 +0100 | [diff] [blame] | 114 | { |
| 115 | pthread_mutex_lock(&log_mutex); |
Jagger | 4fe1869 | 2016-04-22 23:15:07 +0200 | [diff] [blame] | 116 | defer { |
| 117 | pthread_mutex_unlock(&log_mutex); |
| 118 | }; |
robert.swiecki | 3bb518c | 2010-10-14 00:48:24 +0000 | [diff] [blame] | 119 | |
Robert Swiecki | a9db9dd | 2016-03-09 16:29:37 +0100 | [diff] [blame] | 120 | if (log_fd_isatty) { |
| 121 | dprintf(log_fd, "%s", logLevels[ll].prefix); |
| 122 | } |
| 123 | if (logLevels[ll].print_funcline) { |
| 124 | dprintf(log_fd, "[%s][%s][%d] %s():%d ", timestr, logLevels[ll].descr, __hf_pid(), fn, |
| 125 | ln); |
| 126 | } |
Jagger | 9402137 | 2015-10-11 17:01:53 +0200 | [diff] [blame] | 127 | |
Robert Swiecki | a9db9dd | 2016-03-09 16:29:37 +0100 | [diff] [blame] | 128 | va_list args; |
| 129 | va_start(args, fmt); |
| 130 | vdprintf(log_fd, fmt, args); |
| 131 | va_end(args); |
| 132 | |
| 133 | if (perr == true) { |
| 134 | dprintf(log_fd, ": %s", strerr); |
| 135 | } |
| 136 | if (log_fd_isatty) { |
| 137 | dprintf(log_fd, "\033[0m"); |
| 138 | } |
| 139 | dprintf(log_fd, "\n"); |
robert.swiecki | 3bb518c | 2010-10-14 00:48:24 +0000 | [diff] [blame] | 140 | } |
Robert Swiecki | c8c32db | 2015-10-09 18:06:22 +0200 | [diff] [blame] | 141 | /* End printing logs */ |
robert.swiecki@gmail.com | ebc1cac | 2011-07-02 03:15:51 +0000 | [diff] [blame] | 142 | |
Robert Swiecki | c8c32db | 2015-10-09 18:06:22 +0200 | [diff] [blame] | 143 | if (ll == FATAL) { |
| 144 | exit(1); |
robert.swiecki@gmail.com | 6f31991 | 2015-02-28 05:01:37 +0000 | [diff] [blame] | 145 | } |
Robert Swiecki | c8c32db | 2015-10-09 18:06:22 +0200 | [diff] [blame] | 146 | } |
robert.swiecki@gmail.com | e7190b9 | 2015-02-14 23:05:42 +0000 | [diff] [blame] | 147 | |
Robert Swiecki | c8c32db | 2015-10-09 18:06:22 +0200 | [diff] [blame] | 148 | void logStop(int sig) |
| 149 | { |
| 150 | LOG_I("Server stops due to fatal signal (%d) caught. Exiting", sig); |
| 151 | } |
| 152 | |
| 153 | void logRedirectLogFD(int fd) |
| 154 | { |
| 155 | log_fd = fd; |
| 156 | } |
| 157 | |
| 158 | void logDirectlyToFD(const char *msg) |
| 159 | { |
| 160 | dprintf(log_fd, "%s", msg); |
robert.swiecki | 3bb518c | 2010-10-14 00:48:24 +0000 | [diff] [blame] | 161 | } |