mirror of https://github.com/labapart/gattlib
332 lines
6.0 KiB
C
332 lines
6.0 KiB
C
/*
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*
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* BlueZ - Bluetooth protocol stack for Linux
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*
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* Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdio.h>
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#include <errno.h>
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#include <syslog.h>
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#include <stdarg.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <sys/socket.h>
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#include <glib.h>
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#include "lib/bluetooth.h"
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#include "lib/hci.h"
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#include "src/shared/util.h"
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#include "log.h"
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#define LOG_IDENT "bluetoothd"
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#define LOG_IDENT_LEN sizeof(LOG_IDENT)
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struct log_hdr {
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uint16_t opcode;
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uint16_t index;
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uint16_t len;
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uint8_t priority;
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uint8_t ident_len;
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} __attribute__((packed));
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static int logging_fd = -1;
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static void logging_open(void)
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{
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struct sockaddr_hci addr;
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int fd;
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if (logging_fd >= 0)
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return;
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fd = socket(PF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI);
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if (fd < 0)
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return;
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memset(&addr, 0, sizeof(addr));
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addr.hci_family = AF_BLUETOOTH;
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addr.hci_dev = HCI_DEV_NONE;
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addr.hci_channel = HCI_CHANNEL_LOGGING;
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if (bind(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
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close(fd);
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return;
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}
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logging_fd = fd;
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}
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static void logging_close(void)
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{
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if (logging_fd >= 0) {
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close(logging_fd);
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logging_fd = -1;
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}
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}
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static void logging_log(uint16_t index, int priority,
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const char *format, va_list ap)
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{
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struct log_hdr hdr;
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struct msghdr msg;
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struct iovec iov[3];
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uint16_t len;
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char *str;
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if (vasprintf(&str, format, ap) < 0)
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return;
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len = strlen(str) + 1;
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hdr.opcode = cpu_to_le16(0x0000);
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hdr.index = cpu_to_le16(index);
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hdr.len = cpu_to_le16(2 + LOG_IDENT_LEN + len);
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hdr.priority = priority;
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hdr.ident_len = LOG_IDENT_LEN;
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iov[0].iov_base = &hdr;
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iov[0].iov_len = sizeof(hdr);
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iov[1].iov_base = LOG_IDENT;
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iov[1].iov_len = LOG_IDENT_LEN;
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iov[2].iov_base = str;
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iov[2].iov_len = len;
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memset(&msg, 0, sizeof(msg));
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msg.msg_iov = iov;
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msg.msg_iovlen = 3;
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if (sendmsg(logging_fd, &msg, 0) < 0) {
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if (errno != ENODEV) {
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close(logging_fd);
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logging_fd = -1;
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}
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}
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free(str);
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}
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void error(const char *format, ...)
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{
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va_list ap;
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va_start(ap, format);
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vsyslog(LOG_ERR, format, ap);
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va_end(ap);
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if (logging_fd < 0)
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return;
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va_start(ap, format);
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logging_log(HCI_DEV_NONE, LOG_ERR, format, ap);
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va_end(ap);
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}
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void warn(const char *format, ...)
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{
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va_list ap;
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va_start(ap, format);
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vsyslog(LOG_WARNING, format, ap);
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va_end(ap);
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if (logging_fd < 0)
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return;
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va_start(ap, format);
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logging_log(HCI_DEV_NONE, LOG_WARNING, format, ap);
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va_end(ap);
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}
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void info(const char *format, ...)
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{
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va_list ap;
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va_start(ap, format);
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vsyslog(LOG_INFO, format, ap);
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va_end(ap);
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if (logging_fd < 0)
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return;
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va_start(ap, format);
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logging_log(HCI_DEV_NONE, LOG_INFO, format, ap);
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va_end(ap);
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}
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void btd_log(uint16_t index, int priority, const char *format, ...)
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{
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va_list ap;
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va_start(ap, format);
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vsyslog(priority, format, ap);
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va_end(ap);
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if (logging_fd < 0)
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return;
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va_start(ap, format);
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logging_log(index, priority, format, ap);
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va_end(ap);
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}
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void btd_error(uint16_t index, const char *format, ...)
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{
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va_list ap;
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va_start(ap, format);
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vsyslog(LOG_ERR, format, ap);
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va_end(ap);
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if (logging_fd < 0)
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return;
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va_start(ap, format);
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logging_log(index, LOG_ERR, format, ap);
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va_end(ap);
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}
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void btd_warn(uint16_t index, const char *format, ...)
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{
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va_list ap;
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va_start(ap, format);
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vsyslog(LOG_WARNING, format, ap);
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va_end(ap);
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if (logging_fd < 0)
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return;
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va_start(ap, format);
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logging_log(index, LOG_WARNING, format, ap);
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va_end(ap);
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}
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void btd_info(uint16_t index, const char *format, ...)
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{
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va_list ap;
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va_start(ap, format);
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vsyslog(LOG_INFO, format, ap);
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va_end(ap);
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if (logging_fd < 0)
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return;
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va_start(ap, format);
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logging_log(index, LOG_INFO, format, ap);
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va_end(ap);
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}
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void btd_debug(uint16_t index, const char *format, ...)
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{
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va_list ap;
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va_start(ap, format);
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vsyslog(LOG_DEBUG, format, ap);
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va_end(ap);
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if (logging_fd < 0)
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return;
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va_start(ap, format);
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logging_log(index, LOG_DEBUG, format, ap);
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va_end(ap);
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}
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extern struct btd_debug_desc __start___debug[];
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extern struct btd_debug_desc __stop___debug[];
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static char **enabled = NULL;
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static gboolean is_enabled(struct btd_debug_desc *desc)
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{
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int i;
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if (enabled == NULL)
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return 0;
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for (i = 0; enabled[i] != NULL; i++)
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if (desc->file != NULL && g_pattern_match_simple(enabled[i],
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desc->file) == TRUE)
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return 1;
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return 0;
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}
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void __btd_enable_debug(struct btd_debug_desc *start,
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struct btd_debug_desc *stop)
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{
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struct btd_debug_desc *desc;
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if (start == NULL || stop == NULL)
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return;
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for (desc = start; desc < stop; desc++) {
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if (is_enabled(desc))
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desc->flags |= BTD_DEBUG_FLAG_PRINT;
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}
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}
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void __btd_toggle_debug(void)
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{
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struct btd_debug_desc *desc;
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for (desc = __start___debug; desc < __stop___debug; desc++)
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desc->flags |= BTD_DEBUG_FLAG_PRINT;
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}
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void __btd_log_init(const char *debug, int detach)
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{
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int option = LOG_NDELAY | LOG_PID;
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if (debug != NULL)
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enabled = g_strsplit_set(debug, ":, ", 0);
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__btd_enable_debug(__start___debug, __stop___debug);
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logging_open();
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if (!detach)
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option |= LOG_PERROR;
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openlog(LOG_IDENT, option, LOG_DAEMON);
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info("Bluetooth daemon %d.%d", BLUEZ_VERSION_MAJOR, BLUEZ_VERSION_MINOR);
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}
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void __btd_log_cleanup(void)
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{
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closelog();
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logging_close();
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g_strfreev(enabled);
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}
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