327 lines
8.4 KiB
C
327 lines
8.4 KiB
C
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/* Copyright (c) 1993-2000 by Richard Kelsey and Jonathan Rees.
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See file COPYING. */
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#include <syslog.h>
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#include "scheme48.h"
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static s48_value sch_openlog(s48_value sch_ident,
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s48_value sch_option,
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s48_value sch_facility),
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sch_setlogmask(s48_value sch_logmask),
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sch_syslog(s48_value sch_level,
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s48_value sch_facility,
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s48_value sch_message),
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sch_closelog(void);
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/*
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* Record types imported from Scheme.
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*/
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static s48_value syslog_options_type_binding = S48_FALSE;
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static s48_value syslog_facility_type_binding = S48_FALSE;
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static s48_value syslog_facilities_binding = S48_FALSE;
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static s48_value syslog_level_type_binding = S48_FALSE;
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static s48_value syslog_levels_binding = S48_FALSE;
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static s48_value syslog_mask_type_binding = S48_FALSE;
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/*
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* Install all exported functions in Scheme 48.
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*/
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void
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s48_init_syslog(void)
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{
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S48_EXPORT_FUNCTION(sch_openlog);
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S48_EXPORT_FUNCTION(sch_syslog);
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S48_EXPORT_FUNCTION(sch_setlogmask);
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S48_EXPORT_FUNCTION(sch_closelog);
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S48_GC_PROTECT_GLOBAL(syslog_options_type_binding);
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syslog_options_type_binding =
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s48_get_imported_binding("syslog-options-type");
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S48_GC_PROTECT_GLOBAL(syslog_facility_type_binding);
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syslog_facility_type_binding =
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s48_get_imported_binding("syslog-facility-type");
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S48_GC_PROTECT_GLOBAL(syslog_facilities_binding);
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syslog_facilities_binding =
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s48_get_imported_binding("syslog-facilities");
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S48_GC_PROTECT_GLOBAL(syslog_level_type_binding);
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syslog_level_type_binding =
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s48_get_imported_binding("syslog-level-type");
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S48_GC_PROTECT_GLOBAL(syslog_levels_binding);
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syslog_levels_binding =
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s48_get_imported_binding("syslog-levels");
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S48_GC_PROTECT_GLOBAL(syslog_mask_type_binding);
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syslog_mask_type_binding =
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s48_get_imported_binding("syslog-mask-type");
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}
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/* ************************************************************ */
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/* Syslog options.
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*
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* We translate the local bits into our own bits and vice versa.
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*/
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static s48_value
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s48_enter_syslog_options(int syslog_options)
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{
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s48_value sch_syslog_options;
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int my_syslog_options;
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my_syslog_options =
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(LOG_CONS & syslog_options ? 00001 : 0) |
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(LOG_ODELAY & syslog_options ? 00002 : 0) |
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(LOG_NDELAY & syslog_options ? 00004 : 0) |
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(LOG_PERROR & syslog_options ? 00010 : 0) |
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(LOG_PID & syslog_options ? 00020 : 0);
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sch_syslog_options = s48_make_record(syslog_options_type_binding);
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S48_UNSAFE_RECORD_SET(sch_syslog_options, 0, s48_enter_fixnum(my_syslog_options));
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return sch_syslog_options;
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}
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static int
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s48_extract_syslog_options(s48_value sch_syslog_options)
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{
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int c_syslog_options;
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int syslog_options;
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s48_check_record_type(sch_syslog_options, syslog_options_type_binding);
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syslog_options =
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s48_extract_fixnum(S48_UNSAFE_RECORD_REF(sch_syslog_options, 0));
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c_syslog_options =
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(00001 & syslog_options ? LOG_CONS : 0) |
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(00002 & syslog_options ? LOG_ODELAY : 0) |
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(00004 & syslog_options ? LOG_NDELAY : 0) |
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(00010 & syslog_options ? LOG_PERROR : 0) |
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(00020 & syslog_options ? LOG_PID : 0);
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return c_syslog_options;
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}
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/* ************************************************************ */
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/* Syslog facility.
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*
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* We translate the local facility into our own encoding and vice versa.
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*/
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/* The order of these is known to the Scheme code. */
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static int syslog_facilities[] = {
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LOG_AUTH,
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LOG_CRON,
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LOG_DAEMON,
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LOG_KERN,
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LOG_LPR,
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LOG_MAIL,
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LOG_NEWS,
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LOG_USER,
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LOG_UUCP,
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LOG_LOCAL0, LOG_LOCAL1, LOG_LOCAL2, LOG_LOCAL3,
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LOG_LOCAL4, LOG_LOCAL5, LOG_LOCAL6, LOG_LOCAL7
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};
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static s48_value
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s48_enter_syslog_facility(int syslog_facility)
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{
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s48_value sch_syslog_facility;
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int my_syslog_facility;
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for (my_syslog_facility = 0;
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my_syslog_facility < (sizeof(syslog_facilities) / sizeof(int));
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++my_syslog_facility) {
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if (syslog_facility == my_syslog_facility)
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break;
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}
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sch_syslog_facility =
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S48_VECTOR_REF(S48_SHARED_BINDING_REF(syslog_facilities_binding),
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my_syslog_facility);
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return sch_syslog_facility;
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}
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static s48_value
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s48_extract_syslog_facility(s48_value sch_syslog_facility)
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{
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int c_syslog_facility;
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int syslog_facility;
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s48_check_record_type(sch_syslog_facility, syslog_facility_type_binding);
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syslog_facility =
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s48_extract_fixnum(S48_UNSAFE_RECORD_REF(sch_syslog_facility, 1));
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c_syslog_facility = syslog_facilities[syslog_facility];
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return c_syslog_facility;
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}
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/* ************************************************************ */
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/* Syslog level.
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*
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* We translate the local level into our own encoding and vice versa.
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*/
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/* The order of these is known to the Scheme code. */
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static int syslog_levels[] = {
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LOG_EMERG,
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LOG_ALERT,
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LOG_CRIT,
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LOG_ERR,
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LOG_LPR,
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LOG_WARNING,
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LOG_NOTICE,
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LOG_INFO,
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LOG_DEBUG
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};
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static s48_value
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s48_enter_syslog_level(int syslog_level)
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{
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s48_value sch_syslog_level;
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int my_syslog_level;
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for (my_syslog_level = 0;
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my_syslog_level < (sizeof(syslog_levels) / sizeof(int));
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++my_syslog_level) {
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if (syslog_level == my_syslog_level)
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break;
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}
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sch_syslog_level =
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S48_VECTOR_REF(S48_SHARED_BINDING_REF(syslog_levels_binding),
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my_syslog_level);
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return sch_syslog_level;
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}
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static s48_value
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s48_extract_syslog_level(s48_value sch_syslog_level)
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{
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int c_syslog_level;
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int syslog_level;
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s48_check_record_type(sch_syslog_level, syslog_level_type_binding);
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syslog_level =
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s48_extract_fixnum(S48_UNSAFE_RECORD_REF(sch_syslog_level, 1));
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c_syslog_level = syslog_levels[syslog_level];
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return c_syslog_level;
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}
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/* ************************************************************ */
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/* Syslog mask.
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*
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* We translate the local bits into our own bits and vice versa.
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*/
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static s48_value
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s48_enter_syslog_mask(int syslog_mask)
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{
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s48_value sch_syslog_mask;
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int my_syslog_mask;
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my_syslog_mask =
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(LOG_MASK(LOG_EMERG) & syslog_mask ? 00001 : 0) |
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(LOG_MASK(LOG_ALERT) & syslog_mask ? 00002 : 0) |
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(LOG_MASK(LOG_CRIT) & syslog_mask ? 00004 : 0) |
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(LOG_MASK(LOG_ERR) & syslog_mask ? 00010 : 0) |
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(LOG_MASK(LOG_WARNING) & syslog_mask ? 00020 : 0) |
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(LOG_MASK(LOG_NOTICE) & syslog_mask ? 00040 : 0) |
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(LOG_MASK(LOG_INFO) & syslog_mask ? 00100 : 0) |
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(LOG_MASK(LOG_DEBUG) & syslog_mask ? 00200 : 0);
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sch_syslog_mask = s48_make_record(syslog_mask_type_binding);
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S48_UNSAFE_RECORD_SET(sch_syslog_mask, 0, s48_enter_fixnum(my_syslog_mask));
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return sch_syslog_mask;
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}
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static int
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s48_extract_syslog_mask(s48_value sch_syslog_mask)
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{
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int c_syslog_mask;
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int syslog_mask;
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s48_check_record_type(sch_syslog_mask, syslog_mask_type_binding);
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syslog_mask =
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s48_extract_fixnum(S48_UNSAFE_RECORD_REF(sch_syslog_mask, 0));
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c_syslog_mask =
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(00001 & syslog_mask ? LOG_MASK(LOG_EMERG) : 0) |
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(00002 & syslog_mask ? LOG_MASK(LOG_ALERT) : 0) |
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(00004 & syslog_mask ? LOG_MASK(LOG_CRIT) : 0) |
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(00010 & syslog_mask ? LOG_MASK(LOG_ERR) : 0) |
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(00010 & syslog_mask ? LOG_MASK(LOG_WARNING) : 0) |
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(00010 & syslog_mask ? LOG_MASK(LOG_NOTICE) : 0) |
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(00010 & syslog_mask ? LOG_MASK(LOG_INFO) : 0) |
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(00020 & syslog_mask ? LOG_MASK(LOG_DEBUG) : 0);
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return c_syslog_mask;
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}
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/*
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* Interface to openlog, setlogmask, syslog, and closelog.
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* ### Must still prevent cores.
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*/
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static int syslog_open = 0;
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static s48_value
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sch_openlog(s48_value sch_ident,
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s48_value sch_options,
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s48_value sch_facility)
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{
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if (syslog_open)
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s48_raise_string_os_error("syslog is already open");
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openlog(s48_extract_string(sch_ident),
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s48_extract_syslog_options(sch_options),
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s48_extract_syslog_facility(sch_facility));
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syslog_open = 1;
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return S48_UNSPECIFIC;
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}
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static s48_value
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sch_setlogmask(s48_value sch_logmask)
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{
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int logmask = s48_extract_syslog_mask(sch_logmask);
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int previous_logmask = setlogmask(logmask);
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return s48_enter_syslog_mask(previous_logmask);
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}
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static s48_value
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sch_syslog(s48_value sch_level, s48_value sch_opt_facility,
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s48_value sch_message)
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{
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int facility =
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S48_EQ_P(S48_FALSE, sch_opt_facility)
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? 0 : s48_extract_syslog_facility(sch_opt_facility);
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int level = s48_extract_syslog_level(sch_level);
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if (!syslog_open)
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s48_raise_string_os_error("syslog isn't open");
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syslog(facility | level, s48_extract_string (sch_message));
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return S48_UNSPECIFIC;
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}
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static s48_value
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sch_closelog(void)
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{
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if (!syslog_open)
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s48_raise_string_os_error("syslog isn't open");
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closelog();
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syslog_open = 0;
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return S48_UNSPECIFIC;
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}
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