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/* Copyright 2013-2022
* Kaz Kylheku <kaz@kylheku.com>
* Vancouver, Canada
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <wchar.h>
#include <syslog.h>
#include "config.h"
#include "alloca.h"
#include "lib.h"
#include "stream.h"
#include "gc.h"
#include "args.h"
#include "utf8.h"
#include "eval.h"
#include "syslog.h"
struct syslog_strm {
struct strm_base a;
val prio;
val strstream;
};
val prio_k;
static_forward(struct strm_ops syslog_strm_ops);
void syslog_init(void)
{
reg_varl(intern(lit("log-pid"), user_package), num_fast(LOG_PID));
reg_varl(intern(lit("log-cons"), user_package), num_fast(LOG_CONS));
reg_varl(intern(lit("log-ndelay"), user_package), num_fast(LOG_NDELAY));
reg_varl(intern(lit("log-odelay"), user_package), num_fast(LOG_ODELAY));
reg_varl(intern(lit("log-nowait"), user_package), num_fast(LOG_NOWAIT));
#ifdef LOG_PERROR
reg_varl(intern(lit("log-perror"), user_package), num_fast(LOG_PERROR));
#endif
reg_varl(intern(lit("log-user"), user_package), num_fast(LOG_USER));
reg_varl(intern(lit("log-daemon"), user_package), num_fast(LOG_DAEMON));
reg_varl(intern(lit("log-auth"), user_package), num_fast(LOG_AUTH));
#ifdef LOG_AUTHPRIV
reg_varl(intern(lit("log-authpriv"), user_package), num_fast(LOG_AUTHPRIV));
#endif
reg_varl(intern(lit("log-emerg"), user_package), num_fast(LOG_EMERG));
reg_varl(intern(lit("log-alert"), user_package), num_fast(LOG_ALERT));
reg_varl(intern(lit("log-crit"), user_package), num_fast(LOG_CRIT));
reg_varl(intern(lit("log-err"), user_package), num_fast(LOG_ERR));
reg_varl(intern(lit("log-warning"), user_package), num_fast(LOG_WARNING));
reg_varl(intern(lit("log-notice"), user_package), num_fast(LOG_NOTICE));
reg_varl(intern(lit("log-info"), user_package), num_fast(LOG_INFO));
reg_varl(intern(lit("log-debug"), user_package), num_fast(LOG_DEBUG));
reg_fun(intern(lit("openlog"), user_package), func_n3o(openlog_wrap, 1));
reg_fun(intern(lit("closelog"), user_package), func_n0(closelog_wrap));
reg_fun(intern(lit("setlogmask"), user_package), func_n1(setlogmask_wrap));
reg_fun(intern(lit("syslog"), user_package), func_n2v(syslog_wrapv));
prio_k = intern(lit("prio"), keyword_package);
reg_var(intern(lit("*stdlog*"), user_package), make_syslog_stream(num_fast(LOG_INFO)));
fill_stream_ops(&syslog_strm_ops);
}
val openlog_wrap(val wident, val optmask, val facility)
{
val self = lit("openlog");
static char *ident;
cnum coptmask = c_num(default_arg(optmask, zero), self);
cnum cfacility = c_num(default_arg(facility, num_fast(LOG_USER)), self);
char *old_ident = ident;
ident = utf8_dup_to(c_str(wident, self));
openlog(ident, coptmask, cfacility);
free(old_ident);
return nil;
}
val setlogmask_wrap(val mask)
{
val self = lit("setlogmask");
return num(setlogmask(c_num(mask, self)));
}
val syslog_wrapv(val prio, val fmt, struct args *args)
{
val self = lit("syslog");
val text = formatv(nil, fmt, args);
cnum cprio = c_num(prio, self);
char *u8text = utf8_dup_to(c_str(text, self));
syslog(cprio, "%s", u8text);
return nil;
}
val syslog_wrap(val prio, val fmt, val arglist)
{
args_decl_list(args, ARGS_MIN, arglist);
return syslog_wrapv(prio, fmt, args);
}
val closelog_wrap(void)
{
closelog();
return nil;
}
static void syslog_mark(val stream)
{
struct syslog_strm *s = coerce(struct syslog_strm *, stream->co.handle);
strm_base_mark(&s->a);
gc_mark(s->prio);
gc_mark(s->strstream);
}
static val syslog_put_string(val stream, val str)
{
struct syslog_strm *s = coerce(struct syslog_strm *, stream->co.handle);
val strstream = s->strstream;
for (;;) {
val length = length_str(str);
val span_to_newline = compl_span_str(str, lit("\n"));
if (zerop(length))
break;
put_string(sub_str(str, nil, span_to_newline), strstream);
if (equal(span_to_newline, length))
break;
str = sub_str(str, plus(span_to_newline, num(1)), nil);
syslog_wrap(s->prio, lit("~a"), list(get_string_from_stream(strstream), nao));
strstream = make_string_output_stream();
}
set(mkloc(s->strstream, stream), strstream);
return t;
}
static val syslog_put_char(val stream, val ch)
{
struct syslog_strm *s = coerce(struct syslog_strm *, stream->co.handle);
val strstream = s->strstream;
if (ch == chr('\n')) {
syslog_wrap(s->prio, lit("~a"), list(get_string_from_stream(strstream), nao));
strstream = make_string_output_stream();
} else {
put_char(ch, strstream);
}
set(mkloc(s->strstream, stream), strstream);
return t;
}
static val syslog_put_byte(val stream, int ch)
{
struct syslog_strm *s = coerce(struct syslog_strm *, stream->co.handle);
val strstream = s->strstream;
if (ch == '\n') {
syslog_wrap(s->prio, lit("~a"), list(get_string_from_stream(strstream), nao));
strstream = make_string_output_stream();
} else {
put_byte(num(ch), strstream);
}
set(mkloc(s->strstream, stream), strstream);
return t;
}
static val syslog_get_prop(val stream, val ind)
{
if (ind == prio_k) {
struct syslog_strm *s = coerce(struct syslog_strm *, stream->co.handle);
return s->prio;
} else if (ind == name_k) {
return lit("syslog");
}
return nil;
}
static val syslog_set_prop(val stream, val ind, val prop)
{
if (ind == prio_k) {
struct syslog_strm *s = coerce(struct syslog_strm *, stream->co.handle);
set(mkloc(s->prio, stream), prop);
return t;
}
return nil;
}
static_def(struct strm_ops syslog_strm_ops =
strm_ops_init(cobj_ops_init(eq,
stream_print_op,
cobj_destroy_free_op,
syslog_mark,
cobj_eq_hash_op),
wli("syslog-stream"),
syslog_put_string,
syslog_put_char,
syslog_put_byte,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
syslog_get_prop,
syslog_set_prop,
0, 0, 0, 0));
val make_syslog_stream(val prio)
{
struct syslog_strm *s = coerce(struct syslog_strm *, chk_malloc(sizeof *s));
val stream;
val strstream = make_string_output_stream();
strm_base_init(&s->a);
s->prio = prio;
s->strstream = nil;
stream = cobj(coerce(mem_t *, s), stream_cls, &syslog_strm_ops.cobj_ops);
s->strstream = strstream;
return stream;
}
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