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28 | 1 | /* |
2 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
3 | * | |
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4 | * Copyright 2013 Olaf Wintermann. All rights reserved. |
28 | 5 | * |
6 | * Redistribution and use in source and binary forms, with or without | |
7 | * modification, are permitted provided that the following conditions are met: | |
8 | * | |
9 | * 1. Redistributions of source code must retain the above copyright | |
10 | * notice, this list of conditions and the following disclaimer. | |
11 | * | |
12 | * 2. Redistributions in binary form must reproduce the above copyright | |
13 | * notice, this list of conditions and the following disclaimer in the | |
14 | * documentation and/or other materials provided with the distribution. | |
15 | * | |
16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | |
20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
26 | * POSSIBILITY OF SUCH DAMAGE. | |
27 | */ | |
28 | ||
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29 | #ifdef __gnu_linux__ |
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30 | #define _GNU_SOURCE |
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31 | #endif |
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32 | |
28 | 33 | #include <stdio.h> |
34 | #include <stdlib.h> | |
35 | #include <string.h> | |
36 | #include <unistd.h> | |
37 | #include <aio.h> | |
38 | #include <time.h> | |
39 | ||
40 | #include "log.h" | |
41 | #include "../util/strbuf.h" | |
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42 | #include "../util/io.h" |
77 | 43 | #include "../util/atomic.h" |
28 | 44 | |
91 | 45 | #include <ucx/map.h> |
46 | ||
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47 | static int is_initialized = 0; |
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48 | |
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49 | static int log_file_fd; |
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50 | static int log_level = 0; |
28 | 51 | |
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52 | WSBool main_is_daemon(void); |
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53 | |
28 | 54 | /* |
55 | * if the log file is uninitialized, output is written to the ui_buffer | |
56 | */ | |
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57 | static sbuf_t *ui_buffer = NULL; |
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58 | |
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59 | /* |
77 | 60 | * access log file map |
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61 | */ |
77 | 62 | static UcxMap *access_log_files; // map of LogFile* |
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63 | |
28 | 64 | |
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65 | static char *log_date_month[] = { |
28 | 66 | "Jan", |
67 | "Feb", | |
68 | "Mar", | |
69 | "Apr", | |
70 | "May", | |
71 | "Jun", | |
72 | "Jul", | |
73 | "Aug", | |
74 | "Sep", | |
75 | "Oct", | |
76 | "Nov", | |
77 | "Dec" | |
78 | }; | |
79 | ||
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80 | static char *log_levels[] = { |
28 | 81 | "warning", |
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82 | "config", |
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83 | "security", |
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84 | "failure", |
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85 | "catastrophe", |
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86 | "info", |
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87 | "verbose", |
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88 | "debug" |
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89 | }; |
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90 | |
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91 | static int can_log[] = { |
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92 | 1, // warning |
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93 | 1, // config |
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94 | 1, // security |
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95 | 1, // failure |
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96 | 1, // catastrophe |
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97 | 1, // info |
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98 | 0, // verbose |
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99 | 0 // debug |
28 | 100 | }; |
101 | ||
102 | int init_log_file(LogConfig *cfg) { | |
103 | if(is_initialized) { | |
104 | return 0; | |
105 | } | |
106 | ||
107 | /* open the log file */ | |
108 | mode_t mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH; | |
109 | log_file_fd = open(cfg->file, O_WRONLY | O_CREAT | O_APPEND, mode); | |
110 | if(log_file_fd == -1) { | |
111 | return -1; | |
112 | } | |
113 | ||
114 | if(!strcmp(cfg->level, "ERROR")) { | |
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115 | can_log[LOG_WARN] = 0; |
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116 | can_log[LOG_INFORM] = 0; |
28 | 117 | } else if(!strcmp(cfg->level, "WARNING")) { |
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118 | can_log[LOG_INFORM] = 0; |
141 | 119 | } else if(!strcmp(cfg->level, "VERBOSE")) { |
120 | can_log[LOG_VERBOSE] = 1; | |
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121 | } else if(!strcmp(cfg->level, "DEBUG")) { |
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122 | can_log[LOG_VERBOSE] = 1; |
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123 | can_log[LOG_DEBUG] = 1; |
28 | 124 | } |
125 | ||
126 | if(cfg->log_stdout) { | |
127 | // TODO | |
128 | } | |
129 | if(cfg->log_stderr) { | |
130 | // TODO | |
131 | } | |
132 | ||
133 | ||
134 | is_initialized = 1; | |
135 | ||
136 | /* if ui_buffer is not NULL, write it to the log file */ | |
137 | if(ui_buffer) { | |
138 | size_t len = ui_buffer->length; | |
139 | size_t r; | |
140 | while(len > 0) { | |
141 | r = write(log_file_fd, ui_buffer->ptr, ui_buffer->length); | |
142 | len -= r; | |
143 | } | |
144 | ||
145 | sbuf_free(ui_buffer); | |
146 | } | |
147 | ||
148 | return 0; | |
149 | } | |
150 | ||
151 | void log_uninitialized_writeln(char *str, size_t len) { | |
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152 | printf("%.*s\n", (int)len, str); |
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153 | |
28 | 154 | if(ui_buffer == NULL) { |
155 | ui_buffer = sbuf_new(1024); | |
156 | if(ui_buffer == NULL) { | |
157 | return; /* TODO: critical error, exit */ | |
158 | } | |
159 | } | |
160 | ||
161 | sstr_t s; | |
162 | s.ptr = str; | |
163 | s.length = len; | |
164 | ||
165 | sbuf_append(ui_buffer, s); | |
166 | sbuf_put(ui_buffer, '\n'); | |
167 | } | |
168 | ||
169 | void log_file_writeln(char *str, size_t len) { | |
170 | if(!is_initialized) { | |
171 | log_uninitialized_writeln(str, len); | |
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172 | return; |
28 | 173 | } |
174 | ||
175 | struct iovec io[] = { | |
176 | { str, len }, | |
177 | { "\n", 1} | |
178 | }; | |
179 | ||
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180 | writev(log_file_fd, io, 2); /* TODO: aio? */ |
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181 | if(!main_is_daemon()) { |
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182 | writev(STDOUT_FILENO, io, 2); |
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183 | } |
28 | 184 | } |
185 | ||
186 | sstr_t log_get_prefix(int level) { | |
187 | time_t t = time(NULL); | |
188 | ||
189 | sstr_t d; | |
190 | d.ptr = NULL; | |
191 | d.length = 0; | |
192 | ||
193 | struct tm date; | |
194 | localtime_r(&t, &date); | |
195 | ||
196 | char *buf = malloc(64); | |
197 | int len = snprintf( | |
198 | buf, | |
199 | 64, | |
200 | "[%02d/%s/%d:%02d:%02d:%02d] %s : ", | |
201 | date.tm_mday, | |
202 | log_date_month[date.tm_mon], | |
203 | 1900 + date.tm_year, | |
204 | date.tm_hour, | |
205 | date.tm_min, | |
206 | date.tm_sec, | |
207 | log_levels[level]); | |
208 | ||
209 | if(len > 0) { | |
210 | d.ptr = buf; | |
211 | d.length = len; | |
212 | } | |
213 | ||
214 | return d; | |
215 | } | |
216 | ||
217 | ||
218 | /* | |
219 | * log api functions | |
220 | */ | |
221 | ||
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222 | int log_ereport(int degree, const char *format, ...) { |
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223 | va_list args; |
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224 | va_start(args, format); |
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225 | int ret = log_ereport_v(degree, format, args); |
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226 | va_end(args); |
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227 | return ret; |
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228 | } |
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229 | |
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230 | int log_ereport_v(int degree, const char *format, va_list args) { |
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231 | if(degree < 0 || degree > 7) { |
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232 | return 0; |
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233 | } |
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234 | if(!can_log[degree]) { |
28 | 235 | return 0; |
236 | } | |
237 | ||
238 | sstr_t lmsg; | |
239 | lmsg.ptr = NULL; | |
240 | ||
241 | /* create log message prefix */ | |
242 | sstr_t lpre = log_get_prefix(degree); | |
243 | ||
244 | /* format message */ | |
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245 | int len = vasprintf(&lmsg.ptr, format, args); |
28 | 246 | lmsg.length = len; |
247 | ||
248 | /* create message string */ | |
99 | 249 | sstr_t message = sstrcat(2, lpre, lmsg); |
28 | 250 | |
251 | /* write message to the log file */ | |
252 | log_file_writeln(message.ptr, message.length); | |
253 | ||
254 | /* cleanup */ | |
255 | free(lmsg.ptr); | |
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256 | free(lpre.ptr); |
28 | 257 | free(message.ptr); |
258 | ||
259 | return 0; | |
260 | } | |
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261 | |
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262 | int log_error(int degree, const char *func, Session *sn, Request *rq, |
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263 | const char *format, ...) |
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264 | { |
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265 | va_list args; |
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266 | va_start(args, format); |
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267 | int ret = log_error_v(degree, func, sn, rq, format, args); |
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268 | va_end(args); |
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269 | return ret; |
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270 | } |
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271 | |
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272 | int log_error_v(int degree, const char *func, Session *sn, Request *rq, |
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273 | const char *format, va_list args) |
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274 | { |
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275 | // TODO: implement |
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276 | return log_ereport(degree, format, args); |
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277 | } |
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278 | |
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279 | |
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280 | void ws_log_assert(const char *file, const char *func, int line) { |
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281 | log_ereport( |
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282 | LOG_CATASTROPHE, |
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283 | "assertion failed: %s: %s:%d", |
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284 | file, |
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285 | func, |
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286 | line); |
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287 | exit(-1); |
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288 | } |
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289 | |
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290 | |
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291 | /* |
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292 | * access log |
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293 | * This source file only manages access log files. IO is performed directly |
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294 | * by AddLog safs. |
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295 | */ |
77 | 296 | LogFile* get_access_log_file(sstr_t file) { |
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297 | if(!access_log_files) { |
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298 | access_log_files = ucx_map_new(4); |
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299 | } |
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300 | |
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301 | if(file.ptr == NULL || file.length == 0) { |
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302 | return NULL; |
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303 | } |
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304 | |
77 | 305 | LogFile *log = ucx_map_sstr_get(access_log_files, file); |
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306 | if(log != NULL) { |
77 | 307 | ws_atomic_inc32(&log->ref); |
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308 | return log; |
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309 | } |
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310 | |
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311 | // the log file is not opened |
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312 | // check first if we can open it |
77 | 313 | FILE *out = fopen(file.ptr, "a"); |
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314 | if(out == NULL) { |
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315 | return NULL; |
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316 | } |
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317 | |
77 | 318 | // create LogFile object |
319 | log = calloc(1, sizeof(LogFile)); | |
320 | log->file = out; | |
321 | log->ref = 1; | |
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322 | |
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323 | // add access log to the map |
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324 | ucx_map_sstr_put(access_log_files, file, log); |
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325 | |
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326 | return log; |
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327 | } |
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328 |