1
2 /*
3 * Copyright (C) Igor Sysoev
4 */
5
6
7 #include <ngx_config.h>
8 #include <ngx_core.h>
9
10
11 static char *ngx_set_error_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
12
13
14 static ngx_command_t ngx_errlog_commands[] = {
15
16 {ngx_string("error_log"),
17 NGX_MAIN_CONF|NGX_CONF_1MORE,
18 ngx_set_error_log,
19 0,
20 0,
21 NULL},
22
23 ngx_null_command
24 };
25
26
27 static ngx_core_module_t ngx_errlog_module_ctx = {
28 ngx_string("errlog"),
29 NULL,
30 NULL
31 };
32
33
34 ngx_module_t ngx_errlog_module = {
35 NGX_MODULE_V1,
36 &ngx_errlog_module_ctx, /* module context */
37 ngx_errlog_commands, /* module directives */
38 NGX_CORE_MODULE, /* module type */
39 NULL, /* init master */
40 NULL, /* init module */
41 NULL, /* init process */
42 NULL, /* init thread */
43 NULL, /* exit thread */
44 NULL, /* exit process */
45 NULL, /* exit master */
46 NGX_MODULE_V1_PADDING
47 };
48
49
50 static ngx_log_t ngx_log;
51 static ngx_open_file_t ngx_stderr;
52
53
54 static const char *err_levels[] = {
55 "stderr", "emerg", "alert", "crit", "error",
56 "warn", "notice", "info", "debug"
57 };
58
59 static const char *debug_levels[] = {
60 "debug_core", "debug_alloc", "debug_mutex", "debug_event",
61 "debug_http", "debug_mail", "debug_mysql"
62 };
63
64
65 #if (NGX_HAVE_VARIADIC_MACROS)
66
67 void
68 ngx_log_error_core(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
69 const char *fmt, ...)
70
71 #else
72
73 void
74 ngx_log_error_core(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
75 const char *fmt, va_list args)
76
77 #endif
78 {
79 #if (NGX_HAVE_VARIADIC_MACROS)
80 va_list args;
81 #endif
82 u_char errstr[NGX_MAX_ERROR_STR], *p, *last;
83
84 if (log->file->fd == NGX_INVALID_FILE) {
85 return;
86 }
87
88 last = errstr + NGX_MAX_ERROR_STR;
89
90 ngx_memcpy(errstr, ngx_cached_err_log_time.data,
91 ngx_cached_err_log_time.len);
92
93 p = errstr + ngx_cached_err_log_time.len;
94
95 p = ngx_snprintf(p, last - p, " [%s] ", err_levels[level]);
96
97 /* pid#tid */
98 p = ngx_snprintf(p, last - p, "%P#" NGX_TID_T_FMT ": ",
99 ngx_log_pid, ngx_log_tid);
100
101 if (log->connection) {
102 p = ngx_snprintf(p, last - p, "*%uA ", log->connection);
103 }
104
105 #if (NGX_HAVE_VARIADIC_MACROS)
106
107 va_start(args, fmt);
108 p = ngx_vsnprintf(p, last - p, fmt, args);
109 va_end(args);
110
111 #else
112
113 p = ngx_vsnprintf(p, last - p, fmt, args);
114
115 #endif
116
117 if (err) {
118
119 if (p > last - 50) {
120
121 /* leave a space for an error code */
122
123 p = last - 50;
124 *p++ = '.';
125 *p++ = '.';
126 *p++ = '.';
127 }
128
129 #if (NGX_WIN32)
130
131 if ((unsigned) err >= 0x80000000) {
132 p = ngx_snprintf(p, last - p, " (%Xd: ", err);
133
134 } else {
135 p = ngx_snprintf(p, last - p, " (%d: ", err);
136 }
137
138 #else
139
140 p = ngx_snprintf(p, last - p, " (%d: ", err);
141
142 #endif
143
144 p = ngx_strerror_r(err, p, last - p);
145
146 if (p < last) {
147 *p++ = ')';
148 }
149 }
150
151 if (level != NGX_LOG_DEBUG && log->handler) {
152 p = log->handler(log, p, last - p);
153 }
154
155 if (p > last - NGX_LINEFEED_SIZE) {
156 p = last - NGX_LINEFEED_SIZE;
157 }
158
159 ngx_linefeed(p);
160
161 ngx_write_fd(log->file->fd, errstr, p - errstr);
162 }
163
164
165 #if !(NGX_HAVE_VARIADIC_MACROS)
166
167 void ngx_cdecl
168 ngx_log_error(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
169 const char *fmt, ...)
170 {
171 va_list args;
172
173 if (log->log_level >= level) {
174 va_start(args, fmt);
175 ngx_log_error_core(level, log, err, fmt, args);
176 va_end(args);
177 }
178 }
179
180
181 void ngx_cdecl
182 ngx_log_debug_core(ngx_log_t *log, ngx_err_t err, const char *fmt, ...)
183 {
184 va_list args;
185
186 va_start(args, fmt);
187 ngx_log_error_core(NGX_LOG_DEBUG, log, err, fmt, args);
188 va_end(args);
189 }
190
191 #endif
192
193
194 void
195 ngx_log_abort(ngx_err_t err, const char *text)
196 {
197 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, err, text);
198 }
199
200
201 ngx_log_t *
202 ngx_log_init(void)
203 {
204 ngx_log.file = &ngx_stderr;
205 ngx_log.log_level = NGX_LOG_NOTICE;
206
207 #if (NGX_WIN32)
208
209 ngx_stderr_fileno = GetStdHandle(STD_ERROR_HANDLE);
210
211 ngx_stderr.fd = ngx_open_file(NGX_ERROR_LOG_PATH, NGX_FILE_RDWR,
212 NGX_FILE_CREATE_OR_OPEN|NGX_FILE_APPEND, 0);
213
214 if (ngx_stderr.fd == NGX_INVALID_FILE) {
215 ngx_message_box("nginx", MB_OK, ngx_errno,
216 "Could not open error log file: "
217 ngx_open_file_n " \"" NGX_ERROR_LOG_PATH "\" failed");
218 return NULL;
219 }
220
221 if (ngx_file_append_mode(ngx_stderr.fd) == NGX_ERROR) {
222 ngx_message_box("nginx", MB_OK, ngx_errno,
223 "Could not open error log file: "
224 ngx_file_append_mode_n " \"" NGX_ERROR_LOG_PATH
225 "\" failed");
226 return NULL;
227 }
228
229 #else
230
231 ngx_stderr.fd = STDERR_FILENO;
232
233 #endif
234
235 return &ngx_log;
236 }
237
238
239 ngx_log_t *
240 ngx_log_create_errlog(ngx_cycle_t *cycle, ngx_array_t *args)
241 {
242 ngx_log_t *log;
243 ngx_str_t *value, *name;
244
245 if (args) {
246 value = args->elts;
247 name = &value[1];
248
249 } else {
250 name = NULL;
251 }
252
253 log = ngx_pcalloc(cycle->pool, sizeof(ngx_log_t));
254 if (log == NULL) {
255 return NULL;
256 }
257
258 log->file = ngx_conf_open_file(cycle, name);
259 if (log->file == NULL) {
260 return NULL;
261 }
262
263 return log;
264 }
265
266
267 char *
268 ngx_set_error_log_levels(ngx_conf_t *cf, ngx_log_t *log)
269 {
270 ngx_uint_t i, n, d;
271 ngx_str_t *value;
272
273 value = cf->args->elts;
274
275 for (i = 2; i < cf->args->nelts; i++) {
276
277 for (n = 1; n <= NGX_LOG_DEBUG; n++) {
278 if (ngx_strcmp(value[i].data, err_levels[n]) == 0) {
279
280 if (log->log_level != 0) {
281 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
282 "duplicate log level \"%s\"",
283 value[i].data);
284 return NGX_CONF_ERROR;
285 }
286
287 log->log_level = n;
288 continue;
289 }
290 }
291
292 for (n = 0, d = NGX_LOG_DEBUG_FIRST; d <= NGX_LOG_DEBUG_LAST; d <<= 1) {
293 if (ngx_strcmp(value[i].data, debug_levels[n++]) == 0) {
294 if (log->log_level & ~NGX_LOG_DEBUG_ALL) {
295 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
296 "invalid log level \"%s\"",
297 value[i].data);
298 return NGX_CONF_ERROR;
299 }
300
301 log->log_level |= d;
302 }
303 }
304
305
306 if (log->log_level == 0) {
307 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
308 "invalid log level \"%s\"", value[i].data);
309 return NGX_CONF_ERROR;
310 }
311 }
312
313 if (log->log_level == NGX_LOG_DEBUG) {
314 log->log_level = NGX_LOG_DEBUG_ALL;
315 }
316
317 return NGX_CONF_OK;
318 }
319
320
321 static char *
322 ngx_set_error_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
323 {
324 ngx_str_t *value;
325
326 value = cf->args->elts;
327
328 if (value[1].len == 6 && ngx_strcmp(value[1].data, "stderr") == 0) {
329 cf->cycle->new_log->file->fd = ngx_stderr.fd;
330 cf->cycle->new_log->file->name.len = 0;
331 cf->cycle->new_log->file->name.data = NULL;
332
333 } else {
334 cf->cycle->new_log->file->name = value[1];
335
336 if (ngx_conf_full_name(cf->cycle, &cf->cycle->new_log->file->name, 0)
337 == NGX_ERROR)
338 {
339 return NGX_CONF_ERROR;
340 }
341 }
342
343 return ngx_set_error_log_levels(cf, cf->cycle->new_log);
344 }
345
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