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Date:: Thu Aug 26 10:51:12 2021 UTC
Message:: Remove CVS ID line and add my copyright as well Henning is not responsible for the stuff I put in :)
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  1 f224a3fe 2021-08-24 xhr /*
  2 f224a3fe 2021-08-24 xhr  * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
  3 53d188a0 2021-08-26 xhr  * Copyright (c) 2021 Matthias Schmidt <xhr@giessen.ccc.de>
  4 f224a3fe 2021-08-24 xhr  *
  5 f224a3fe 2021-08-24 xhr  * Permission to use, copy, modify, and distribute this software for any
  6 f224a3fe 2021-08-24 xhr  * purpose with or without fee is hereby granted, provided that the above
  7 f224a3fe 2021-08-24 xhr  * copyright notice and this permission notice appear in all copies.
  8 f224a3fe 2021-08-24 xhr  *
  9 f224a3fe 2021-08-24 xhr  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 10 f224a3fe 2021-08-24 xhr  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 11 f224a3fe 2021-08-24 xhr  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 12 f224a3fe 2021-08-24 xhr  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 13 f224a3fe 2021-08-24 xhr  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 14 f224a3fe 2021-08-24 xhr  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 15 f224a3fe 2021-08-24 xhr  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 16 f224a3fe 2021-08-24 xhr  */
 17 f224a3fe 2021-08-24 xhr 
 18 f224a3fe 2021-08-24 xhr #define _GNU_SOURCE
 19 f224a3fe 2021-08-24 xhr 
 20 f224a3fe 2021-08-24 xhr #include <sys/types.h>
 21 f224a3fe 2021-08-24 xhr #include <sys/stat.h>
 22 f224a3fe 2021-08-24 xhr 
 23 f224a3fe 2021-08-24 xhr #include <stdio.h>
 24 f224a3fe 2021-08-24 xhr #include <stdlib.h>
 25 f224a3fe 2021-08-24 xhr #include <stdarg.h>
 26 f224a3fe 2021-08-24 xhr #include <string.h>
 27 f224a3fe 2021-08-24 xhr #include <syslog.h>
 28 f224a3fe 2021-08-24 xhr #include <errno.h>
 29 f224a3fe 2021-08-24 xhr #include <fcntl.h>
 30 f224a3fe 2021-08-24 xhr #include <unistd.h>
 31 f224a3fe 2021-08-24 xhr #include <time.h>
 32 f224a3fe 2021-08-24 xhr 
 33 f224a3fe 2021-08-24 xhr #include "log.h"
 34 f224a3fe 2021-08-24 xhr #include "twind.h"
 35 f224a3fe 2021-08-24 xhr 
 36 f224a3fe 2021-08-24 xhr #define MAXLOGLINE 1024
 37 f224a3fe 2021-08-24 xhr 
 38 f224a3fe 2021-08-24 xhr static int		 debug;
 39 f224a3fe 2021-08-24 xhr static int		 verbose;
 40 f224a3fe 2021-08-24 xhr static int access_fd;
 41 f224a3fe 2021-08-24 xhr static int error_fd;
 42 f224a3fe 2021-08-24 xhr 
 43 f224a3fe 2021-08-24 xhr static const char	*log_procname;
 44 f224a3fe 2021-08-24 xhr 
 45 f224a3fe 2021-08-24 xhr void
 46 f224a3fe 2021-08-24 xhr log_init(int n_debug, int facility)
 47 f224a3fe 2021-08-24 xhr {
 48 f224a3fe 2021-08-24 xhr 	extern char	*__progname;
 49 f224a3fe 2021-08-24 xhr 
 50 f224a3fe 2021-08-24 xhr 	debug = n_debug;
 51 f224a3fe 2021-08-24 xhr 	verbose = n_debug;
 52 f224a3fe 2021-08-24 xhr 	log_procinit(__progname);
 53 f224a3fe 2021-08-24 xhr 
 54 f224a3fe 2021-08-24 xhr 	if (!debug)
 55 f224a3fe 2021-08-24 xhr 		openlog(__progname, LOG_PID | LOG_NDELAY, facility);
 56 f224a3fe 2021-08-24 xhr 
 57 f224a3fe 2021-08-24 xhr 	tzset();
 58 f224a3fe 2021-08-24 xhr }
 59 f224a3fe 2021-08-24 xhr 
 60 f224a3fe 2021-08-24 xhr void
 61 f224a3fe 2021-08-24 xhr log_procinit(const char *procname)
 62 f224a3fe 2021-08-24 xhr {
 63 f224a3fe 2021-08-24 xhr 	if (procname != NULL)
 64 f224a3fe 2021-08-24 xhr 		log_procname = procname;
 65 f224a3fe 2021-08-24 xhr }
 66 f224a3fe 2021-08-24 xhr 
 67 f224a3fe 2021-08-24 xhr void
 68 f224a3fe 2021-08-24 xhr log_setverbose(int v)
 69 f224a3fe 2021-08-24 xhr {
 70 f224a3fe 2021-08-24 xhr 	verbose = v;
 71 f224a3fe 2021-08-24 xhr }
 72 f224a3fe 2021-08-24 xhr 
 73 f224a3fe 2021-08-24 xhr int
 74 f224a3fe 2021-08-24 xhr log_getverbose(void)
 75 f224a3fe 2021-08-24 xhr {
 76 f224a3fe 2021-08-24 xhr 	return (verbose);
 77 f224a3fe 2021-08-24 xhr }
 78 f224a3fe 2021-08-24 xhr 
 79 f224a3fe 2021-08-24 xhr void
 80 f224a3fe 2021-08-24 xhr logit(int pri, const char *fmt, ...)
 81 f224a3fe 2021-08-24 xhr {
 82 f224a3fe 2021-08-24 xhr 	va_list	ap;
 83 f224a3fe 2021-08-24 xhr 
 84 f224a3fe 2021-08-24 xhr 	va_start(ap, fmt);
 85 f224a3fe 2021-08-24 xhr 	vlog(pri, fmt, ap);
 86 f224a3fe 2021-08-24 xhr 	va_end(ap);
 87 f224a3fe 2021-08-24 xhr }
 88 f224a3fe 2021-08-24 xhr 
 89 f224a3fe 2021-08-24 xhr void
 90 f224a3fe 2021-08-24 xhr vlog(int pri, const char *fmt, va_list ap)
 91 f224a3fe 2021-08-24 xhr {
 92 f224a3fe 2021-08-24 xhr 	char	*nfmt;
 93 f224a3fe 2021-08-24 xhr 	int	 saved_errno = errno;
 94 f224a3fe 2021-08-24 xhr 
 95 f224a3fe 2021-08-24 xhr 	if (debug) {
 96 f224a3fe 2021-08-24 xhr 		/* best effort in out of mem situations */
 97 f224a3fe 2021-08-24 xhr 		if (asprintf(&nfmt, "%s\n", fmt) == -1) {
 98 f224a3fe 2021-08-24 xhr 			vfprintf(stderr, fmt, ap);
 99 f224a3fe 2021-08-24 xhr 			fprintf(stderr, "\n");
100 f224a3fe 2021-08-24 xhr 		} else {
101 f224a3fe 2021-08-24 xhr 			vfprintf(stderr, nfmt, ap);
102 f224a3fe 2021-08-24 xhr 			free(nfmt);
103 f224a3fe 2021-08-24 xhr 		}
104 f224a3fe 2021-08-24 xhr 		fflush(stderr);
105 f224a3fe 2021-08-24 xhr 	} else
106 f224a3fe 2021-08-24 xhr 		vsyslog(pri, fmt, ap);
107 f224a3fe 2021-08-24 xhr 
108 f224a3fe 2021-08-24 xhr 	errno = saved_errno;
109 f224a3fe 2021-08-24 xhr }
110 f224a3fe 2021-08-24 xhr 
111 f224a3fe 2021-08-24 xhr void
112 f224a3fe 2021-08-24 xhr log_warn(const char *emsg, ...)
113 f224a3fe 2021-08-24 xhr {
114 f224a3fe 2021-08-24 xhr 	char		*nfmt;
115 f224a3fe 2021-08-24 xhr 	va_list		 ap;
116 f224a3fe 2021-08-24 xhr 	int		 saved_errno = errno;
117 f224a3fe 2021-08-24 xhr 
118 f224a3fe 2021-08-24 xhr 	/* best effort to even work in out of memory situations */
119 f224a3fe 2021-08-24 xhr 	if (emsg == NULL)
120 f224a3fe 2021-08-24 xhr 		logit(LOG_ERR, "%s", strerror(saved_errno));
121 f224a3fe 2021-08-24 xhr 	else {
122 f224a3fe 2021-08-24 xhr 		va_start(ap, emsg);
123 f224a3fe 2021-08-24 xhr 
124 f224a3fe 2021-08-24 xhr 		if (asprintf(&nfmt, "%s: %s", emsg,
125 f224a3fe 2021-08-24 xhr 		    strerror(saved_errno)) == -1) {
126 f224a3fe 2021-08-24 xhr 			/* we tried it... */
127 f224a3fe 2021-08-24 xhr 			vlog(LOG_ERR, emsg, ap);
128 f224a3fe 2021-08-24 xhr 			logit(LOG_ERR, "%s", strerror(saved_errno));
129 f224a3fe 2021-08-24 xhr 		} else {
130 f224a3fe 2021-08-24 xhr 			vlog(LOG_ERR, nfmt, ap);
131 f224a3fe 2021-08-24 xhr 			free(nfmt);
132 f224a3fe 2021-08-24 xhr 		}
133 f224a3fe 2021-08-24 xhr 		va_end(ap);
134 f224a3fe 2021-08-24 xhr 	}
135 f224a3fe 2021-08-24 xhr 
136 f224a3fe 2021-08-24 xhr 	errno = saved_errno;
137 f224a3fe 2021-08-24 xhr }
138 f224a3fe 2021-08-24 xhr 
139 f224a3fe 2021-08-24 xhr void
140 f224a3fe 2021-08-24 xhr log_warnx(const char *emsg, ...)
141 f224a3fe 2021-08-24 xhr {
142 f224a3fe 2021-08-24 xhr 	va_list	 ap;
143 f224a3fe 2021-08-24 xhr 
144 f224a3fe 2021-08-24 xhr 	va_start(ap, emsg);
145 f224a3fe 2021-08-24 xhr 	vlog(LOG_ERR, emsg, ap);
146 f224a3fe 2021-08-24 xhr 	va_end(ap);
147 f224a3fe 2021-08-24 xhr }
148 f224a3fe 2021-08-24 xhr 
149 f224a3fe 2021-08-24 xhr void
150 f224a3fe 2021-08-24 xhr log_info(const char *emsg, ...)
151 f224a3fe 2021-08-24 xhr {
152 f224a3fe 2021-08-24 xhr 	va_list	 ap;
153 f224a3fe 2021-08-24 xhr 
154 f224a3fe 2021-08-24 xhr 	va_start(ap, emsg);
155 f224a3fe 2021-08-24 xhr 	vlog(LOG_INFO, emsg, ap);
156 f224a3fe 2021-08-24 xhr 	va_end(ap);
157 f224a3fe 2021-08-24 xhr }
158 f224a3fe 2021-08-24 xhr 
159 f224a3fe 2021-08-24 xhr void
160 f224a3fe 2021-08-24 xhr log_debug(const char *emsg, ...)
161 f224a3fe 2021-08-24 xhr {
162 f224a3fe 2021-08-24 xhr 	va_list	 ap;
163 f224a3fe 2021-08-24 xhr 
164 f224a3fe 2021-08-24 xhr 	if (verbose) {
165 f224a3fe 2021-08-24 xhr 		va_start(ap, emsg);
166 f224a3fe 2021-08-24 xhr 		vlog(LOG_DEBUG, emsg, ap);
167 f224a3fe 2021-08-24 xhr 		va_end(ap);
168 f224a3fe 2021-08-24 xhr 	}
169 f224a3fe 2021-08-24 xhr }
170 f224a3fe 2021-08-24 xhr 
171 f224a3fe 2021-08-24 xhr static void
172 f224a3fe 2021-08-24 xhr vfatalc(int code, const char *emsg, va_list ap)
173 f224a3fe 2021-08-24 xhr {
174 f224a3fe 2021-08-24 xhr 	static char	s[BUFSIZ];
175 f224a3fe 2021-08-24 xhr 	const char	*sep;
176 f224a3fe 2021-08-24 xhr 
177 f224a3fe 2021-08-24 xhr 	if (emsg != NULL) {
178 f224a3fe 2021-08-24 xhr 		(void)vsnprintf(s, sizeof(s), emsg, ap);
179 f224a3fe 2021-08-24 xhr 		sep = ": ";
180 f224a3fe 2021-08-24 xhr 	} else {
181 f224a3fe 2021-08-24 xhr 		s[0] = '\0';
182 f224a3fe 2021-08-24 xhr 		sep = "";
183 f224a3fe 2021-08-24 xhr 	}
184 f224a3fe 2021-08-24 xhr 	if (code)
185 f224a3fe 2021-08-24 xhr 		logit(LOG_CRIT, "fatal in %s: %s%s%s",
186 f224a3fe 2021-08-24 xhr 		    log_procname, s, sep, strerror(code));
187 f224a3fe 2021-08-24 xhr 	else
188 f224a3fe 2021-08-24 xhr 		logit(LOG_CRIT, "fatal in %s%s%s", log_procname, sep, s);
189 f224a3fe 2021-08-24 xhr }
190 f224a3fe 2021-08-24 xhr 
191 f224a3fe 2021-08-24 xhr void
192 f224a3fe 2021-08-24 xhr fatal(const char *emsg, ...)
193 f224a3fe 2021-08-24 xhr {
194 f224a3fe 2021-08-24 xhr 	va_list	ap;
195 f224a3fe 2021-08-24 xhr 
196 f224a3fe 2021-08-24 xhr 	va_start(ap, emsg);
197 f224a3fe 2021-08-24 xhr 	vfatalc(errno, emsg, ap);
198 f224a3fe 2021-08-24 xhr 	va_end(ap);
199 f224a3fe 2021-08-24 xhr 	exit(1);
200 f224a3fe 2021-08-24 xhr }
201 f224a3fe 2021-08-24 xhr 
202 f224a3fe 2021-08-24 xhr void
203 f224a3fe 2021-08-24 xhr fatalx(const char *emsg, ...)
204 f224a3fe 2021-08-24 xhr {
205 f224a3fe 2021-08-24 xhr 	va_list	ap;
206 f224a3fe 2021-08-24 xhr 
207 f224a3fe 2021-08-24 xhr 	va_start(ap, emsg);
208 f224a3fe 2021-08-24 xhr 	vfatalc(0, emsg, ap);
209 f224a3fe 2021-08-24 xhr 	va_end(ap);
210 f224a3fe 2021-08-24 xhr 	exit(1);
211 f224a3fe 2021-08-24 xhr }
212 f224a3fe 2021-08-24 xhr 
213 f224a3fe 2021-08-24 xhr void
214 f224a3fe 2021-08-24 xhr open_twind_logs(void)
215 f224a3fe 2021-08-24 xhr {
216 f224a3fe 2021-08-24 xhr 	if ((access_fd = open(_PATH_TWIND_ACCESS_LOG, O_WRONLY|O_APPEND|O_CREAT, 0644))
217 f224a3fe 2021-08-24 xhr 		== -1)
218 f224a3fe 2021-08-24 xhr 		fatalx("Cannot open access log: %s", _PATH_TWIND_ACCESS_LOG);
219 f224a3fe 2021-08-24 xhr 
220 f224a3fe 2021-08-24 xhr 	if ((error_fd = open(_PATH_TWIND_ERROR_LOG, O_WRONLY|O_APPEND|O_CREAT, 0644))
221 f224a3fe 2021-08-24 xhr 		== -1)
222 f224a3fe 2021-08-24 xhr 		fatalx("Cannot open error log: %s", _PATH_TWIND_ACCESS_LOG);
223 f224a3fe 2021-08-24 xhr 
224 a944bd93 2021-08-26 xhr 	log_debug("Log files open");
225 f224a3fe 2021-08-24 xhr }
226 f224a3fe 2021-08-24 xhr 
227 f224a3fe 2021-08-24 xhr void
228 f224a3fe 2021-08-24 xhr close_twind_logs(void)
229 f224a3fe 2021-08-24 xhr {
230 a944bd93 2021-08-26 xhr 	log_debug("Closing log file");
231 f224a3fe 2021-08-24 xhr 	close(access_fd);
232 f224a3fe 2021-08-24 xhr 	close(error_fd);
233 f224a3fe 2021-08-24 xhr }
234 f224a3fe 2021-08-24 xhr 
235 f224a3fe 2021-08-24 xhr void
236 f224a3fe 2021-08-24 xhr log_access(const struct client_connection *cc, const char *fmt, ...)
237 f224a3fe 2021-08-24 xhr {
238 56b35e42 2021-08-26 xhr 	char tmstr[29];
239 f224a3fe 2021-08-24 xhr 	struct tm tm;
240 f224a3fe 2021-08-24 xhr 	time_t t;
241 f224a3fe 2021-08-24 xhr 
242 f224a3fe 2021-08-24 xhr 	t = time(NULL);
243 f224a3fe 2021-08-24 xhr 	tm = *localtime(&t);
244 f224a3fe 2021-08-24 xhr 
245 2c012a4d 2021-08-26 xhr 	if (strftime(tmstr, sizeof(tmstr), "%d/%b/%Y:%H:%M:%S %Z", &tm) == 0) {
246 2c012a4d 2021-08-26 xhr 		log_warn("strftime couldn't save time string");
247 2c012a4d 2021-08-26 xhr 		return;
248 2c012a4d 2021-08-26 xhr 	}
249 56b35e42 2021-08-26 xhr 
250 56b35e42 2021-08-26 xhr 	user_log(0, "%s - - [%s] %s", cc->client_addr, tmstr, fmt);
251 f224a3fe 2021-08-24 xhr }
252 f224a3fe 2021-08-24 xhr 
253 f224a3fe 2021-08-24 xhr void
254 f224a3fe 2021-08-24 xhr log_error(const struct client_connection *cc, const char *fmt, ...)
255 f224a3fe 2021-08-24 xhr {
256 56b35e42 2021-08-26 xhr 	char tmstr[29];
257 f224a3fe 2021-08-24 xhr 	struct tm tm;
258 f224a3fe 2021-08-24 xhr 	time_t t;
259 f224a3fe 2021-08-24 xhr 
260 f224a3fe 2021-08-24 xhr 	t = time(NULL);
261 f224a3fe 2021-08-24 xhr 	tm = *localtime(&t);
262 2c012a4d 2021-08-26 xhr 	if (strftime(tmstr, sizeof(tmstr), "%d/%b/%Y:%H:%M:%S %Z", &tm) == 0) {
263 2c012a4d 2021-08-26 xhr 		log_warn("strftime couldn't save time string");
264 2c012a4d 2021-08-26 xhr 		return;
265 2c012a4d 2021-08-26 xhr 	}
266 f224a3fe 2021-08-24 xhr 
267 56b35e42 2021-08-26 xhr 	user_log(1, "[%s] [error] [client %s] %s", tmstr,
268 56b35e42 2021-08-26 xhr 			cc->client_addr, fmt);
269 f224a3fe 2021-08-24 xhr }
270 f224a3fe 2021-08-24 xhr 
271 f224a3fe 2021-08-24 xhr void
272 f224a3fe 2021-08-24 xhr user_log(int target, const char *fmt, ...)
273 f224a3fe 2021-08-24 xhr {
274 f224a3fe 2021-08-24 xhr 	va_list ap;
275 f224a3fe 2021-08-24 xhr 	int fd = -1;
276 f224a3fe 2021-08-24 xhr 
277 f224a3fe 2021-08-24 xhr 	va_start(ap, fmt);
278 f224a3fe 2021-08-24 xhr 	if (target == 0)
279 f224a3fe 2021-08-24 xhr 		fd = access_fd;
280 f224a3fe 2021-08-24 xhr 	else if (target == 1)
281 f224a3fe 2021-08-24 xhr 		fd = error_fd;
282 f224a3fe 2021-08-24 xhr 	else {
283 f224a3fe 2021-08-24 xhr 		log_warn("Non-existent user log target");
284 f224a3fe 2021-08-24 xhr 		return;
285 f224a3fe 2021-08-24 xhr 	}
286 f224a3fe 2021-08-24 xhr 
287 f224a3fe 2021-08-24 xhr 	vdprintf(fd, fmt, ap);
288 f224a3fe 2021-08-24 xhr 	dprintf(fd, "\n");
289 f224a3fe 2021-08-24 xhr 
290 f224a3fe 2021-08-24 xhr 	va_end(ap);
291 f224a3fe 2021-08-24 xhr }