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Annotation of embedaddon/strongswan/src/libcharon/bus/listeners/sys_logger.c, revision 1.1.1.2

1.1       misho       1: /*
1.1.1.2 ! misho       2:  * Copyright (C) 2012-2020 Tobias Brunner
1.1       misho       3:  * Copyright (C) 2006 Martin Willi
                      4:  * HSR Hochschule fuer Technik Rapperswil
                      5:  *
                      6:  * This program is free software; you can redistribute it and/or modify it
                      7:  * under the terms of the GNU General Public License as published by the
                      8:  * Free Software Foundation; either version 2 of the License, or (at your
                      9:  * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
                     10:  *
                     11:  * This program is distributed in the hope that it will be useful, but
                     12:  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
                     13:  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
                     14:  * for more details.
                     15:  */
                     16: 
                     17: #include <stdio.h>
                     18: #include <string.h>
                     19: #include <syslog.h>
                     20: 
                     21: #include "sys_logger.h"
                     22: 
                     23: #include <threading/mutex.h>
                     24: #include <threading/rwlock.h>
                     25: 
                     26: typedef struct private_sys_logger_t private_sys_logger_t;
                     27: 
                     28: /**
                     29:  * Private data of a sys_logger_t object
                     30:  */
                     31: struct private_sys_logger_t {
                     32: 
                     33:        /**
                     34:         * Public data.
                     35:         */
                     36:        sys_logger_t public;
                     37: 
                     38:        /**
                     39:         * syslog facility to use
                     40:         */
                     41:        int facility;
                     42: 
                     43:        /**
                     44:         * Maximum level to log, for each group
                     45:         */
                     46:        level_t levels[DBG_MAX];
                     47: 
                     48:        /**
                     49:         * Print the name/# of the IKE_SA?
                     50:         */
                     51:        bool ike_name;
                     52: 
                     53:        /**
1.1.1.2 ! misho      54:         * Print the log level
        !            55:         */
        !            56:        bool log_level;
        !            57: 
        !            58:        /**
1.1       misho      59:         * Mutex to ensure multi-line log messages are not torn apart
                     60:         */
                     61:        mutex_t *mutex;
                     62: 
                     63:        /**
                     64:         * Lock to read/write options (levels, ike_name)
                     65:         */
                     66:        rwlock_t *lock;
                     67: };
                     68: 
                     69: METHOD(logger_t, log_, void,
                     70:        private_sys_logger_t *this, debug_t group, level_t level, int thread,
                     71:        ike_sa_t* ike_sa, const char *message)
                     72: {
1.1.1.2 ! misho      73:        char groupstr[5], namestr[128] = "";
1.1       misho      74:        const char *current = message, *next;
                     75: 
                     76:        /* cache group name and optional name string */
                     77:        this->lock->read_lock(this->lock);
1.1.1.2 ! misho      78:        if (this->log_level)
        !            79:        {
        !            80:                snprintf(groupstr, sizeof(groupstr), "%N%d", debug_names, group,
        !            81:                                 level);
        !            82:        }
        !            83:        else
        !            84:        {
        !            85:                snprintf(groupstr, sizeof(groupstr), "%N", debug_names, group);
        !            86:        }
        !            87: 
1.1       misho      88:        if (this->ike_name && ike_sa)
                     89:        {
                     90:                if (ike_sa->get_peer_cfg(ike_sa))
                     91:                {
                     92:                        snprintf(namestr, sizeof(namestr), " <%s|%d>",
                     93:                                ike_sa->get_name(ike_sa), ike_sa->get_unique_id(ike_sa));
                     94:                }
                     95:                else
                     96:                {
                     97:                        snprintf(namestr, sizeof(namestr), " <%d>",
                     98:                                ike_sa->get_unique_id(ike_sa));
                     99:                }
                    100:        }
                    101:        this->lock->unlock(this->lock);
                    102: 
                    103:        /* do a syslog for every line */
                    104:        this->mutex->lock(this->mutex);
                    105:        while (TRUE)
                    106:        {
                    107:                next = strchr(current, '\n');
                    108:                if (next == NULL)
                    109:                {
                    110:                        syslog(this->facility | LOG_INFO, "%.2d[%s]%s %s\n",
                    111:                                   thread, groupstr, namestr, current);
                    112:                        break;
                    113:                }
                    114:                syslog(this->facility | LOG_INFO, "%.2d[%s]%s %.*s\n",
                    115:                           thread, groupstr, namestr, (int)(next - current), current);
                    116:                current = next + 1;
                    117:        }
                    118:        this->mutex->unlock(this->mutex);
                    119: }
                    120: 
                    121: METHOD(logger_t, get_level, level_t,
                    122:        private_sys_logger_t *this, debug_t group)
                    123: {
                    124:        level_t level;
                    125: 
                    126:        this->lock->read_lock(this->lock);
                    127:        level = this->levels[group];
                    128:        this->lock->unlock(this->lock);
                    129:        return level;
                    130: }
                    131: 
                    132: METHOD(sys_logger_t, set_level, void,
                    133:        private_sys_logger_t *this, debug_t group, level_t level)
                    134: {
                    135:        this->lock->write_lock(this->lock);
                    136:        if (group < DBG_ANY)
                    137:        {
                    138:                this->levels[group] = level;
                    139:        }
                    140:        else
                    141:        {
                    142:                for (group = 0; group < DBG_MAX; group++)
                    143:                {
                    144:                        this->levels[group] = level;
                    145:                }
                    146:        }
                    147:        this->lock->unlock(this->lock);
                    148: }
                    149: 
                    150: METHOD(sys_logger_t, set_options, void,
1.1.1.2 ! misho     151:        private_sys_logger_t *this, bool ike_name, bool log_level)
1.1       misho     152: {
                    153:        this->lock->write_lock(this->lock);
                    154:        this->ike_name = ike_name;
1.1.1.2 ! misho     155:        this->log_level = log_level;
1.1       misho     156:        this->lock->unlock(this->lock);
                    157: }
                    158: 
                    159: METHOD(sys_logger_t, destroy, void,
                    160:        private_sys_logger_t *this)
                    161: {
                    162:        this->lock->destroy(this->lock);
                    163:        this->mutex->destroy(this->mutex);
                    164:        free(this);
                    165: }
                    166: 
                    167: /*
                    168:  * Described in header.
                    169:  */
                    170: sys_logger_t *sys_logger_create(int facility)
                    171: {
                    172:        private_sys_logger_t *this;
                    173: 
                    174:        INIT(this,
                    175:                .public = {
                    176:                        .logger = {
                    177:                                .log = _log_,
                    178:                                .get_level = _get_level,
                    179:                        },
                    180:                        .set_level = _set_level,
                    181:                        .set_options = _set_options,
                    182:                        .destroy = _destroy,
                    183:                },
                    184:                .facility = facility,
                    185:                .mutex = mutex_create(MUTEX_TYPE_DEFAULT),
                    186:                .lock = rwlock_create(RWLOCK_TYPE_DEFAULT),
                    187:        );
                    188: 
                    189:        set_level(this, DBG_ANY, LEVEL_SILENT);
                    190:        setlogmask(LOG_UPTO(LOG_INFO));
                    191: 
                    192:        return &this->public;
                    193: }