99 lines
2.8 KiB
C++
99 lines
2.8 KiB
C++
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//
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// ZoneMinder Fifo Debug
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// Copyright (C) 2019 ZoneMinder LLC
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
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//
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#include "zm_fifo_debug.h"
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#include "zm_fifo.h"
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#include "zm_monitor.h"
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#include "zm_signal.h"
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#include <fcntl.h>
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#include <sys/file.h>
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#define RAW_BUFFER 512
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static bool zm_fifodbg_inited = false;
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FILE *zm_fifodbg_log_fd = nullptr;
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char zm_fifodbg_log[PATH_MAX] = "";
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static bool zmFifoDbgOpen() {
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if ( zm_fifodbg_log_fd )
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fclose(zm_fifodbg_log_fd);
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zm_fifodbg_log_fd = nullptr;
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signal(SIGPIPE, SIG_IGN);
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Fifo::fifo_create_if_missing(zm_fifodbg_log);
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int fd = open(zm_fifodbg_log, O_WRONLY|O_NONBLOCK|O_TRUNC);
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if ( fd < 0 )
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return false;
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int res = flock(fd, LOCK_EX | LOCK_NB);
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if ( res < 0 ) {
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close(fd);
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return false;
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}
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zm_fifodbg_log_fd = fdopen(fd, "wb");
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if ( zm_fifodbg_log_fd == nullptr ) {
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close(fd);
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return false;
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}
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return true;
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}
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int zmFifoDbgInit(Monitor *monitor) {
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zm_fifodbg_inited = true;
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snprintf(zm_fifodbg_log, sizeof(zm_fifodbg_log), "%s/dbgpipe-%d.log",
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staticConfig.PATH_SOCKS.c_str(), monitor->Id());
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zmFifoDbgOpen();
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return 1;
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}
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void zmFifoDbgOutput(
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int hex,
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const char * const file,
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const int line,
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const int level,
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const char *fstring,
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...
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) {
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char dbg_string[8192];
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int str_size = sizeof(dbg_string);
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va_list arg_ptr;
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if ( (!zm_fifodbg_inited) || ( !zm_fifodbg_log_fd && !zmFifoDbgOpen() ) )
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return;
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char *dbg_ptr = dbg_string;
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va_start(arg_ptr, fstring);
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if ( hex ) {
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unsigned char *data = va_arg(arg_ptr, unsigned char *);
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int len = va_arg(arg_ptr, int);
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dbg_ptr += snprintf(dbg_ptr, str_size-(dbg_ptr-dbg_string), "%d:", len);
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for ( int i = 0; i < len; i++ ) {
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dbg_ptr += snprintf(dbg_ptr, str_size-(dbg_ptr-dbg_string), " %02x", data[i]);
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}
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} else {
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dbg_ptr += vsnprintf(dbg_ptr, str_size-(dbg_ptr-dbg_string), fstring, arg_ptr);
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}
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va_end(arg_ptr);
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strncpy(dbg_ptr++, "\n", 2);
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int res = fwrite(dbg_string, dbg_ptr-dbg_string, 1, zm_fifodbg_log_fd);
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if ( res != 1 ) {
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fclose(zm_fifodbg_log_fd);
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zm_fifodbg_log_fd = nullptr;
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} else {
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fflush(zm_fifodbg_log_fd);
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}
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}
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