2 * Copyright (c) 2021, 2023 Omar Polo <op@omarpolo.com>
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 #include <sys/types.h>
37 #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
40 static int logfd = -1;
41 static int log_to_syslog = 1;
42 static int facility = LOG_DAEMON;
44 static void logger_init(struct privsep *, struct privsep_proc *, void *);
45 static void logger_shutdown(void);
46 static int logger_dispatch_parent(int, struct privsep_proc *, struct imsg *);
47 static int logger_dispatch_server(int, struct privsep_proc *, struct imsg *);
49 static struct privsep_proc procs[] = {
50 { "parent", PROC_PARENT, logger_dispatch_parent },
51 { "server", PROC_SERVER, logger_dispatch_server },
55 logger(struct privsep *ps, struct privsep_proc *p)
57 proc_run(ps, p, procs, nitems(procs), logger_init, NULL);
61 logger_init(struct privsep *ps, struct privsep_proc *p, void *arg)
63 p->p_shutdown = logger_shutdown;
65 openlog(getprogname(), LOG_NDELAY, LOG_DAEMON);
68 sandbox_logger_process();
80 logger_dispatch_parent(int fd, struct privsep_proc *p, struct imsg *imsg)
82 switch (imsg_get_type(imsg)) {
83 case IMSG_LOG_FACILITY:
84 if (imsg_get_data(imsg, &facility, sizeof(facility)) == -1)
85 fatal("corrupted IMSG_LOG_SYSLOG");
88 if (imsg_get_data(imsg, &log_to_syslog,
89 sizeof(log_to_syslog)) == -1)
90 fatal("corrupted IMSG_LOG_SYSLOG");
95 logfd = imsg_get_fd(imsg);
105 logger_dispatch_server(int fd, struct privsep_proc *p, struct imsg *imsg)
111 switch (imsg_get_type(imsg)) {
112 case IMSG_LOG_REQUEST:
113 if (imsg_get_ibuf(imsg, &ibuf) == -1 ||
114 (datalen = ibuf_size(&ibuf)) == 0)
115 fatal("got invalid IMSG_LOG_REQUEST");
116 msg = ibuf_data(&ibuf);
117 msg[datalen - 1] = '\0';
119 dprintf(logfd, "%s\n", msg);
121 syslog(facility | LOG_NOTICE, "%s", msg);