366 lines
7.5 KiB
C
366 lines
7.5 KiB
C
//
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// ZoneMinder Debug Implementation, $Date$, $Revision$
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// Copyright (C) 2003 Philip Coombes
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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//
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <time.h>
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#include <sys/time.h>
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#include <syslog.h>
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#include <signal.h>
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#include <stdarg.h>
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#include <errno.h>
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#include "zm_debug.h"
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static char zm_temp_dbg_string[4096];
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static char zm_dbg_string[4096+512];
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static const char *zm_dbg_file;
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static int zm_dbg_line;
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static int zm_dbg_code;
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static char zm_dbg_class[4];
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const char *zm_dbg_name = "";
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int zm_dbg_pid = -1;
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static int zm_dbg_switched_on = FALSE;
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int zm_dbg_level = 0;
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char zm_dbg_log[128] = "";
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FILE *zm_dbg_log_fd = (FILE *)NULL;
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int zm_dbg_print = FALSE;
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int zm_dbg_flush = FALSE;
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int zm_dbg_runtime = FALSE;
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int zm_dbg_add_log_id = FALSE;
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struct timeval zm_dbg_start;
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static int zm_dbg_running = FALSE;
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void zmUsrHandler( int sig )
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{
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if( sig == SIGUSR1)
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{
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zm_dbg_switched_on = TRUE;
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if ( zm_dbg_level < 9 )
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{
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zm_dbg_level++;
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}
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}
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else if ( sig == SIGUSR2 )
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{
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if( zm_dbg_level > -3 )
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{
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zm_dbg_level--;
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}
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}
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Info(( "Debug Level Changed to %d", zm_dbg_level ));
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}
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int zmGetDebugEnv( const char * const command )
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{
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char buffer[128];
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char *env_ptr;
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/* zm_dbg_level = 0; */
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/* zm_dbg_log[0] = '\0'; */
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env_ptr = getenv( "ZM_DBG_PRINT" );
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if ( env_ptr == (char *)NULL )
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{
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zm_dbg_print = FALSE;
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}
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else
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{
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zm_dbg_print = atoi( env_ptr );
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}
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env_ptr = getenv( "ZM_DBG_FLUSH" );
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if ( env_ptr == (char *)NULL )
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{
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zm_dbg_flush = FALSE;
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}
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else
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{
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zm_dbg_flush = atoi( env_ptr );
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}
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env_ptr = getenv( "ZM_DBG_RUNTIME" );
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if ( env_ptr == (char *)NULL )
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{
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zm_dbg_runtime = FALSE;
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}
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else
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{
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zm_dbg_runtime = atoi( env_ptr );
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}
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sprintf(buffer,"ZM_DBG_LEVEL_%s",command);
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env_ptr = getenv(buffer);
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if( env_ptr != (char *)NULL )
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{
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zm_dbg_level = atoi(env_ptr);
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}
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sprintf( buffer, "ZM_DBG_LOG_%s", command );
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env_ptr = getenv( buffer );
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if ( env_ptr != (char *)NULL )
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{
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/* If we do not want to add a pid to the debug logs
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* which is the default, and original method
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*/
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if ( env_ptr[strlen(env_ptr)-1] == '+' )
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{
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/* remove the + character from the string */
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env_ptr[strlen(env_ptr)-1] = '\0';
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zm_dbg_add_log_id = TRUE;
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}
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if ( zm_dbg_add_log_id == FALSE )
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{
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strcpy( zm_dbg_log, env_ptr );
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}
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else
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{
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sprintf( zm_dbg_log, "%s.%05d", env_ptr, getpid() );
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}
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}
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return(0);
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}
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int zmDebugInitialise()
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{
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FILE *tmp_fp;
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int status;
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struct timezone tzp;
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gettimeofday( &zm_dbg_start, &tzp );
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Debug(1,("Initialising Debug"));
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/* Now set up the syslog stuff */
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(void) openlog( zm_dbg_name, LOG_PID|LOG_NDELAY, LOG_LOCAL1 );
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zm_temp_dbg_string[0] = '\0';
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zm_dbg_class[0] = '\0';
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zm_dbg_pid = getpid();
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zm_dbg_log_fd = (FILE *)NULL;
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if( (status = zmGetDebugEnv(zm_dbg_name) ) < 0)
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{
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Error(("Debug Environment Error, status = %d",status));
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return(ZM_DBG_ERROR);
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}
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if ( ( zm_dbg_add_log_id == FALSE && zm_dbg_log[0] ) && ( zm_dbg_log[strlen(zm_dbg_log)-1] == '~' ) )
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{
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zm_dbg_log[strlen(zm_dbg_log)-1] = '\0';
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if ( (tmp_fp = fopen(zm_dbg_log, "r")) != NULL )
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{
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char old_pth[256];
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sprintf(old_pth, "%s.old", zm_dbg_log);
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rename(zm_dbg_log, old_pth);
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fclose(tmp_fp); /* should maybe fclose() before rename() ? */
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}
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}
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if( zm_dbg_log[0] && (zm_dbg_log_fd = fopen(zm_dbg_log,"w")) == (FILE *)NULL )
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{
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Error(("fopen() for %s, error = %s",zm_dbg_log,strerror(errno)));
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return(ZM_DBG_ERROR);
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}
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Info(("Debug Level = %d, Debug Log = %s",zm_dbg_level,zm_dbg_log));
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{
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struct sigaction action, old_action;
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action.sa_handler = zmUsrHandler;
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action.sa_flags = SA_RESTART;
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if ( sigaction( SIGUSR1, &action, &old_action ) < 0 )
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{
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Error(("sigaction(), error = %s",strerror(errno)));
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return(ZM_DBG_ERROR);
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}
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if ( sigaction( SIGUSR2, &action, &old_action ) < 0)
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{
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Error(("sigaction(), error = %s",strerror(errno)));
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return(ZM_DBG_ERROR);
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}
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}
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zm_dbg_running = TRUE;
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return(ZM_DBG_OK);
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}
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int zmDbgInit()
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{
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return((zmDebugInitialise() == ZM_DBG_OK ? 0 : 1));
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}
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int zmDebugTerminate()
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{
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Debug(1,("Terminating Debug"));
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fflush(zm_dbg_log_fd);
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if((fclose(zm_dbg_log_fd)) == -1)
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{
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Error(("fclose(), error = %s",strerror(errno)));
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return(ZM_DBG_ERROR);
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}
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zm_dbg_log_fd = (FILE *)NULL;
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(void) closelog();
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zm_dbg_running = FALSE;
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return(ZM_DBG_OK);
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}
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int zmDbgTerm()
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{
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return((zmDebugTerminate() == ZM_DBG_OK ? 0 : 1));
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}
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void zmDbgSubtractTime( struct timeval * const tp1, struct timeval * const tp2 )
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{
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tp1->tv_sec -= tp2->tv_sec;
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if ( tp1->tv_usec <= tp2->tv_usec )
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{
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tp1->tv_sec--;
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tp1->tv_usec = 1000000 - (tp2->tv_usec - tp1->tv_usec);
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}
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else
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{
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tp1->tv_usec = tp1->tv_usec - tp2->tv_usec;
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}
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}
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int zmDbgPrepare( const char * const file, const int line, const int code )
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{
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zm_dbg_file = file;
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zm_dbg_line = line;
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zm_dbg_code = code;
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switch(code)
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{
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case ZM_DBG_INF:
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strcpy(zm_dbg_class,"INF");
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break;
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case ZM_DBG_WAR:
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strcpy(zm_dbg_class,"WAR");
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break;
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case ZM_DBG_ERR:
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strcpy(zm_dbg_class,"ERR");
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break;
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case ZM_DBG_FAT:
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strcpy(zm_dbg_class,"FAT");
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break;
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default:
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if(code > 0 && code <= 9)
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{
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sprintf(zm_dbg_class,"DB%d",code);
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}
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else
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{
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Error(("Unknown Error Code %d",code));
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}
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break;
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}
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return(code);
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}
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int zmDbgOutput( const char *fstring, ... )
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{
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char time_string[64];
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va_list arg_ptr;
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int log_code;
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struct timeval tp;
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struct timezone tzp;
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zm_temp_dbg_string[0] = '\0';
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va_start(arg_ptr,fstring);
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vsprintf(zm_temp_dbg_string,fstring,arg_ptr);
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gettimeofday( &tp, &tzp );
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if ( zm_dbg_runtime )
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{
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zmDbgSubtractTime( &tp, &zm_dbg_start );
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sprintf( time_string, "%ld.%03ld", tp.tv_sec, tp.tv_usec/1000 );
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}
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else
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{
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time_t the_time;
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the_time = tp.tv_sec;
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strftime(time_string,63,"%x %H:%M:%S",localtime(&the_time));
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sprintf(&(time_string[strlen(time_string)]), ".%06ld", tp.tv_usec);
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}
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sprintf(zm_dbg_string,"%s %s[%d].%s-%s/%d [%s]\n",
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time_string,zm_dbg_name,zm_dbg_pid,
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zm_dbg_class,zm_dbg_file,zm_dbg_line,zm_temp_dbg_string);
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if ( zm_dbg_print )
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{
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printf("%s", zm_dbg_string);
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fflush(stdout);
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}
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if ( zm_dbg_log_fd != (FILE *)NULL )
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{
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fprintf( zm_dbg_log_fd, "%s", zm_dbg_string );
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if ( zm_dbg_flush )
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{
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fflush(zm_dbg_log_fd);
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}
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}
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/* For Info, Warning, Errors etc we want to log them */
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if ( zm_dbg_code <= ZM_DBG_INF )
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{
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if ( !zm_dbg_flush )
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{
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fflush(zm_dbg_log_fd);
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}
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switch(zm_dbg_code)
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{
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case ZM_DBG_INF:
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log_code = LOG_INFO;
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break;
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case ZM_DBG_WAR:
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log_code = LOG_WARNING;
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break;
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case ZM_DBG_ERR:
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log_code = LOG_ERR;
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break;
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case ZM_DBG_FAT:
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log_code = LOG_CRIT;
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break;
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default:
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log_code = LOG_CRIT;
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break;
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}
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log_code |= LOG_LOCAL1;
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syslog( log_code, "%s [%s]", zm_dbg_class, zm_temp_dbg_string );
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}
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va_end(arg_ptr);
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if ( zm_dbg_code == ZM_DBG_FAT )
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{
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exit(-1);
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}
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return( strlen( zm_temp_dbg_string ) );
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}
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