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fw1-loggrabber.c
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fw1-loggrabber.c
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/******************************************************************************/
/* fw1-loggrabber */
/******************************************************************************/
/* */
/* Copyright (c) 2003-2005 Torsten Fellhauer, Xiaodong Lin */
/* Copyright (c) 2014-2016 CERTEGO s.r.l. */
/* All rights reserved. */
/* */
/* Redistribution and use in source and binary forms, with or without */
/* modification, are permitted provided that the following conditions */
/* are met: */
/* 1. Redistributions of source code must retain the above copyright */
/* notice, this list of conditions and the following disclaimer. */
/* 2. Redistributions in binary form must reproduce the above copyright */
/* notice, this list of conditions and the following disclaimer in the */
/* documentation and/or other materials provided with the distribution. */
/* */
/* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND */
/* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE */
/* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE */
/* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE */
/* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL */
/* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS */
/* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) */
/* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT */
/* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY */
/* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF */
/* SUCH DAMAGE. */
/* */
/******************************************************************************/
#include "fw1-loggrabber.h"
/*
* main function
*/
int
main (int argc, char *argv[])
{
int i;
int record_num = 0;
stringlist *lstptr;
char *foundstring;
char *field;
/*
* initialize field arrays
*/
init_field_headers (field_headers);
init_field_values (field_values);
/* The default settings are shown as follows:
* FW1_TYPE = NG release
* Offline mode
* Database is off
* Print off log records
*/
/*
* process command line arguments
*/
for (i = 1; i < argc; i++)
{
if (strcmp (argv[i], "--help") == 0)
{
usage (argv[0]);
exit_loggrabber (1);
}
else if (strcmp (argv[i], "--resolve") == 0)
{
resolve_mode = 1;
}
else if ((strcmp (argv[i], "--noresolve") == 0)
|| (strcmp (argv[i], "--no-resolve") == 0))
{
resolve_mode = 0;
}
else if (strcmp (argv[i], "--debug-level") == 0)
{
i++;
if (argv[i] == NULL)
{
fprintf (stderr, "ERROR: Invalid argument: %s\n", argv[i - 1]);
usage (argv[0]);
exit_loggrabber (1);
}
if (argv[i][0] == '-')
{
fprintf (stderr, "ERROR: Value expected for argument %s\n",
argv[i - 1]);
usage (argv[0]);
exit_loggrabber (1);
}
debug_mode = atoi (argv[i]);
}
else if (strcmp (argv[i], "--showfiles") == 0)
{
show_files = 1;
}
else if (strcmp (argv[i], "--showlogs") == 0)
{
show_files = 0;
}
else if (strcmp (argv[i], "--2000") == 0)
{
fw1_2000 = 1;
}
else if (strcmp (argv[i], "--ng") == 0)
{
fw1_2000 = 0;
}
else if (strcmp (argv[i], "--online") == 0)
{
mode = ONLINE;
}
else if (strcmp (argv[i], "--online-resume") == 0)
{
mode = ONLINE_RESUME;
}
else if (strcmp (argv[i], "--offline") == 0)
{
mode = OFFLINE;
}
else if (strcmp (argv[i], "--auditlog") == 0)
{
audit_log = 1;
}
else if (strcmp (argv[i], "--normallog") == 0)
{
audit_log = 0;
}
else if (strcmp (argv[i], "--loc") == 0)
{
i++;
if ( argv[i] == NULL || argv[i][0] == '-')
{
fprintf (stderr, "ERROR: 0 or positive value expected for argument %s\n",
argv[i - 1]);
usage (argv[0]);
exit_loggrabber (1);
}
errno = 0;
long raw_record_num = strtol ( argv[i], NULL, 10 );
if ( errno == ERANGE || raw_record_num < 0 || raw_record_num > INT_MAX)
{
fprintf (stderr,
"WARNING: %s expects an integer range value greater than or equal to 0\n"
" The provided value will be treated as if it were 0\n",
argv[i-1] );
record_num = 0;
}
else
{
record_num = (int) raw_record_num;
}
}
else if ((strcmp (argv[i], "-f") == 0)
|| (strcmp (argv[i], "--logfile") == 0))
{
i++;
if (argv[i] == NULL)
{
fprintf (stderr, "ERROR: Invalid argument: %s\n", argv[i - 1]);
usage (argv[0]);
exit_loggrabber (1);
}
if (argv[i][0] == '-')
{
fprintf (stderr, "ERROR: Value expected for argument %s\n",
argv[i - 1]);
usage (argv[0]);
exit_loggrabber (1);
}
LogfileName = string_duplicate (argv[i]);
}
else if ((strcmp (argv[i], "-c") == 0)
|| (strcmp (argv[i], "--configfile") == 0))
{
i++;
if (argv[i] == NULL)
{
fprintf (stderr, "ERROR: Invalid argument: %s\n", argv[i - 1]);
usage (argv[0]);
exit_loggrabber (1);
}
if (argv[i][0] == '-')
{
fprintf (stderr, "ERROR: Value expected for argument %s\n",
argv[i - 1]);
usage (argv[0]);
exit_loggrabber (1);
}
cfgvalues.config_filename = string_duplicate (argv[i]);
}
else if ((strcmp (argv[i], "-l") == 0)
|| (strcmp (argv[i], "--leaconfigfile") == 0))
{
i++;
if (argv[i] == NULL)
{
fprintf (stderr, "ERROR: Invalid argument: %s\n", argv[i - 1]);
usage (argv[0]);
exit_loggrabber (1);
}
if (argv[i][0] == '-')
{
fprintf (stderr, "ERROR: Value expected for argument %s\n",
argv[i - 1]);
usage (argv[0]);
exit_loggrabber (1);
}
cfgvalues.leaconfig_filename = string_duplicate (argv[i]);
}
else if (strcmp (argv[i], "--filter") == 0)
{
i++;
if (argv[i] == NULL)
{
fprintf (stderr, "ERROR: Invalid argument: %s\n", argv[i - 1]);
usage (argv[0]);
exit_loggrabber (1);
}
if (argv[i][0] == '-')
{
fprintf (stderr, "ERROR: Value expected for argument %s\n",
argv[i - 1]);
usage (argv[0]);
exit_loggrabber (1);
}
filtercount++;
filterarray =
(char **) realloc (filterarray, filtercount * sizeof (char *));
if (filterarray == NULL)
{
fprintf (stderr, "ERROR: Out of memory\n");
exit_loggrabber (1);
}
filterarray[filtercount - 1] = string_duplicate (argv[i]);
}
else if (strcmp (argv[i], "--ignore-fields") == 0)
{
i++;
if (argv[i] == NULL)
{
fprintf (stderr, "ERROR: Invalid argument: %s\n", argv[i - 1]);
usage (argv[0]);
exit_loggrabber (1);
}
if (argv[i][0] == '-')
{
fprintf (stderr, "ERROR: Value expected for argument %s\n",
argv[i - 1]);
usage (argv[0]);
exit_loggrabber (1);
}
cfgvalues.ignore_fields = string_duplicate (argv[i]);
}
else
{
fprintf (stderr, "ERROR: Invalid argument: %s\n", argv[i]);
usage (argv[0]);
exit_loggrabber (1);
}
}
/*
* check configuration files
*/
check_config_files (cfgvalues.config_filename,
cfgvalues.leaconfig_filename);
/*
* load configuration file
*/
read_config_file (cfgvalues.config_filename, &cfgvalues);
/*
* check whether command line options override configfile options
*/
cfgvalues.debug_mode =
(debug_mode != -1) ? debug_mode : cfgvalues.debug_mode;
cfgvalues.mode =
(mode != -1) ? mode : cfgvalues.mode;
cfgvalues.resolve_mode =
(resolve_mode != -1) ? resolve_mode : cfgvalues.resolve_mode;
cfgvalues.fw1_2000 = (fw1_2000 != -1) ? fw1_2000 : cfgvalues.fw1_2000;
cfgvalues.showfiles_mode =
(show_files != -1) ? show_files : cfgvalues.showfiles_mode;
cfgvalues.audit_mode = (audit_log != -1) ? audit_log : cfgvalues.audit_mode;
cfgvalues.fw1_logfile =
(LogfileName !=
NULL) ? string_duplicate (LogfileName) : cfgvalues.fw1_logfile;
if (filtercount > 0)
{
cfgvalues.fw1_filter_count = filtercount;
cfgvalues.fw1_filter_array = filterarray;
cfgvalues.audit_filter_count = filtercount;
cfgvalues.audit_filter_array = filterarray;
}
/*
* free no more used char*
*/
if (LogfileName != NULL)
{
free (LogfileName);
LogfileName = NULL;
}
/*
* if audit_mode set fw1_logfile to the correct setting
*/
if (cfgvalues.audit_mode)
{
cfgvalues.fw1_logfile = string_duplicate ("fw.adtlog");
}
/*
* perform validity check of given command line arguments
*/
if (cfgvalues.fw1_2000)
{
if (cfgvalues.showfiles_mode)
{
fprintf (stderr,
"ERROR: --showfiles option is only available for connections\n"
" to FW-1 NG. For connections to FW-1 4.1 (2000), please\n"
" omit this parameter.\n");
exit_loggrabber (1);
}
if ((cfgvalues.fw1_filter_count > 0)
|| (cfgvalues.audit_filter_count > 0))
{
fprintf (stderr,
"WARNING: --filter options are only available for connections\n"
" to FW-1 NG. Available filterrules will be disabled!\n");
cfgvalues.fw1_filter_count = 0;
cfgvalues.audit_filter_count = 0;
}
if (cfgvalues.audit_mode)
{
fprintf (stderr,
"ERROR: --auditlog option is only available for connections\n"
" to FW-1 NG. For connections to FW-1 4.1 (2000), please\n"
" omit this parameter.\n");
exit_loggrabber (1);
}
}
if (cfgvalues.mode && (!(cfgvalues.audit_mode))
&& (strcmp (cfgvalues.fw1_logfile, "fw.log") != 0))
{
fprintf (stderr,
"ERROR: -f <FILENAME> option is not available in online modes. For use with Audit-Logfile, use --auditlog\n");
exit_loggrabber (1);
}
if (cfgvalues.mode && cfgvalues.showfiles_mode)
{
fprintf (stderr,
"ERROR: --showfiles option is not available in online modes.\n");
exit_loggrabber (1);
}
if (!(cfgvalues.audit_mode)
&& (strcmp (cfgvalues.fw1_logfile, "fw.adtlog") == 0))
{
fprintf (stderr,
"ERROR: use --auditlog option to get data of fw.adtlog\n");
exit_loggrabber (1);
}
// Process the ignore_fields string if it exists
if (cfgvalues.ignore_fields)
{
ignore_fields = string_duplicate (cfgvalues.ignore_fields);
field = strtok (ignore_fields, ";");
while (field != NULL)
{
ignore_fields_count++;
if (ignore_fields_count >= NUMBER_FIELDS)
{
break;
}
ignore_fields_array =
(char **) realloc (ignore_fields_array, ignore_fields_count * sizeof (char *));
if (ignore_fields_array == NULL)
{
fprintf (stderr, "ERROR: Out of memory\n");
exit_loggrabber (1);
}
ignore_fields_array[ignore_fields_count - 1] = string_duplicate (field);
field = strtok (NULL, ";");
}
}
/*
* add signal handler to stop the program properly
*/
struct sigaction sa;
memset(&sa, 0, sizeof(sa));
sa.sa_handler=&signal_handler;
sigemptyset(&sa.sa_mask);
sigaction(SIGINT,&sa,0);
sigaction(SIGQUIT,&sa,0);
sigaction(SIGTERM,&sa,0);
/* A mutex object to provide safe manipulation of Check Point FW-1 event queue across multiple threads. */
pthread_mutex_init(&mutex, NULL);
/*
* set logging envionment
*/
logging_init_env (cfgvalues.log_mode);
open_log ();
open_fw1_cursorfile (cfgvalues.fw1_logfile);
createThread(&threadid, leaRecordProcessor, NULL);
/*
* set opsec debug level
*/
opsec_set_debug_level (cfgvalues.debug_mode);
if (cfgvalues.debug_mode)
{
fprintf (stderr, "DEBUG: Logfilename : %s\n",
cfgvalues.fw1_logfile);
fprintf (stderr, "DEBUG: Record Separator : %c\n",
cfgvalues.record_separator);
fprintf (stderr, "DEBUG: Resolve Addresses: %s\n",
(cfgvalues.resolve_mode ? "Yes" : "No"));
fprintf (stderr, "DEBUG: Show Filenames : %s\n",
(cfgvalues.showfiles_mode ? "Yes" : "No"));
fprintf (stderr, "DEBUG: FW1-2000 : %s\n",
(cfgvalues.fw1_2000 ? "Yes" : "No"));
char* mode_str;
switch(cfgvalues.mode){
case ONLINE:
mode_str = "ONLINE";
break;
case OFFLINE:
mode_str = "OFFLINE";
break;
case ONLINE_RESUME:
mode_str = "ONLINE_RESUME";
break;
//default:
// strcpy (mode_str, (char*)cfgvalues.mode);
// mode_str = cfgvalues.mode;
}
fprintf (stderr, "DEBUG: Mode : %s\n", mode_str);
fprintf (stderr, "DEBUG: Audit-Log : %s\n",
(cfgvalues.audit_mode ? "Yes" : "No"));
}
/*
* function call to get available Logfile-Names (not available in FW1-4.1)
*/
if (!(cfgvalues.fw1_2000) && !(cfgvalues.mode))
{
get_fw1_logfiles ();
}
if (cfgvalues.showfiles_mode)
{
if ((cfgvalues.fw1_2000) || (cfgvalues.mode))
{
fprintf (stderr,
"ERROR: Option --showfiles is not supported for Checkpoint FW-1 2000 or in online modes.\n");
}
close_log ();
close_fw1_cursorfile ();
exit_loggrabber (0);
}
/*
* process all logfiles if ALL specified
*/
if (strcmp (cfgvalues.fw1_logfile, "ALL") == 0)
{
lstptr = sl;
while (lstptr)
{
if (cfgvalues.debug_mode)
{
fprintf (stderr, "DEBUG: Processing Logfile: %s\n",
lstptr->data);
}
read_fw1_logfile (&(lstptr->data), record_num);
lstptr = lstptr->next;
}
}
/*
* else search for given string in available logfile-names
*/
else
{
lstptr = stringlist_search (&sl, cfgvalues.fw1_logfile, &foundstring);
/*
* get the data from the matching logfiles
*/
if (!lstptr)
{
if (cfgvalues.debug_mode)
{
fprintf (stderr, "DEBUG: Processing Logfile: %s\n",
cfgvalues.fw1_logfile);
}
read_fw1_logfile (&(cfgvalues.fw1_logfile), record_num);
}
while (lstptr)
{
if (cfgvalues.debug_mode)
{
fprintf (stderr, "DEBUG: Processing Logfile: %s\n",
foundstring);
}
read_fw1_logfile (&foundstring, record_num);
lstptr =
stringlist_search (&(lstptr->next), cfgvalues.fw1_logfile,
&foundstring);
}
}
close_log ();
close_fw1_cursorfile ();
exit_loggrabber (0);
return (0);
}
/*
* function read_fw1_logfile
*/
int
read_fw1_logfile (char **LogfileName, int record_num)
{
OpsecEntity *pClient = NULL;
OpsecEntity *pServer = NULL;
LeaFilterRulebase *rb;
int rbid = 1;
int i;
char *auth_type;
char *fw1_server;
char *fw1_port;
char *opsec_certificate;
char *opsec_client_dn;
char *opsec_server_dn;
if (cfgvalues.debug_mode >= 2)
{
fprintf (stderr, "DEBUG: function read_fw1_logfile\n");
}
keepAlive = TRUE;
while (keepAlive)
{
/* create opsec environment for the main loop */
if ((pEnv =
opsec_init (OPSEC_CONF_FILE, cfgvalues.leaconfig_filename,
OPSEC_EOL)) == NULL)
{
fprintf (stderr, "ERROR: unable to create environment (%s)\n",
opsec_errno_str (opsec_errno));
exit_loggrabber (1);
}
/* create user defined events */
initent = opsec_new_event_id();
resumeent = opsec_new_event_id();
shutdownent = opsec_new_event_id();
/* trigger persistent INIT event */
opsec_raise_event (pEnv, initent, (void *) 0);
opsec_set_event_handler ( pEnv, initent, (void *) fc_handler, 0);
opsec_set_event_handler ( pEnv, resumeent, (void *) fc_handler, 0);
opsec_set_event_handler ( pEnv, shutdownent, (void *) fc_handler, 0);
if (cfgvalues.debug_mode)
{
fprintf (stderr, "DEBUG: OPSEC LEA conf file is %s\n",
cfgvalues.leaconfig_filename);
fw1_server = opsec_get_conf (pEnv, "lea_server", "ip", NULL);
if (fw1_server == NULL)
{
fprintf (stderr,
"ERROR: The fw1 server ip address has not been set.\n");
exit_loggrabber (1);
} //end of if
auth_type = opsec_get_conf (pEnv, "lea_server", "auth_type", NULL);
if (auth_type != NULL)
{
//Authentication mode
if (cfgvalues.fw1_2000)
{
//V4.1.2
fw1_port =
opsec_get_conf (pEnv, "lea_server", "auth_port", NULL);
if (fw1_port == NULL)
{
fprintf (stderr,
"ERROR: The parameters about authentication mode have not been set.\n");
exit_loggrabber (1);
}
else
{
fprintf (stderr,
"DEBUG: Authentication mode has been used.\n");
fprintf (stderr, "DEBUG: Server-IP : %s\n",
fw1_server);
fprintf (stderr, "DEBUG: Server-Port : %s\n",
fw1_port);
fprintf (stderr, "DEBUG: Authentication type: %s\n",
auth_type);
} //end of inner if
}
else
{
//NG
fw1_port =
opsec_get_conf (pEnv, "lea_server", "auth_port", NULL);
opsec_certificate =
opsec_get_conf (pEnv, "opsec_sslca_file", NULL);
opsec_client_dn =
opsec_get_conf (pEnv, "opsec_sic_name", NULL);
opsec_server_dn =
opsec_get_conf (pEnv, "lea_server",
"opsec_entity_sic_name", NULL);
if ((fw1_port == NULL) || (opsec_certificate == NULL)
|| (opsec_client_dn == NULL)
|| (opsec_server_dn == NULL))
{
fprintf (stderr,
"ERROR: The parameters about authentication mode have not been set.\n");
exit_loggrabber (1);
}
else
{
fprintf (stderr,
"DEBUG: Authentication mode has been used.\n");
fprintf (stderr, "DEBUG: Server-IP : %s\n",
fw1_server);
fprintf (stderr, "DEBUG: Server-Port : %s\n",
fw1_port);
fprintf (stderr, "DEBUG: Authentication type: %s\n",
auth_type);
fprintf (stderr,
"DEBUG: OPSEC sic certificate file name : %s\n",
opsec_certificate);
fprintf (stderr, "DEBUG: Server DN (sic name) : %s\n",
opsec_server_dn);
fprintf (stderr,
"DEBUG: OPSEC LEA client DN (sic name) : %s\n",
opsec_client_dn);
} //end of inner if
}
}
else
{
//Clear Text mode, i.e. non-auth mode
fw1_port = opsec_get_conf (pEnv, "lea_server", "port", NULL);
if (fw1_port != NULL)
{
fprintf (stderr, "DEBUG: Clear text mode has been used.\n");
fprintf (stderr, "DEBUG: Server-IP : %s\n",
fw1_server);
fprintf (stderr, "DEBUG: Server-Port : %s\n",
fw1_port);
}
else
{
fprintf (stderr,
"ERROR: The fw1 server lea service port has not been set.\n");
exit_loggrabber (1);
} //end of inner if
} //end of middle if
} //end of if
/*
* initialize opsec-client
*/
pClient = opsec_init_entity (pEnv, LEA_CLIENT,
LEA_RECORD_HANDLER,
read_fw1_logfile_record,
LEA_DICT_HANDLER, read_fw1_logfile_dict,
LEA_EOF_HANDLER, read_fw1_logfile_eof,
LEA_SWITCH_HANDLER,
read_fw1_logfile_switch,
LEA_FILTER_QUERY_ACK,
((cfgvalues.
audit_mode) ? ((cfgvalues.
audit_filter_count >
0) ?
read_fw1_logfile_queryack
: NULL) : ((cfgvalues.
fw1_filter_count
>
0) ?
read_fw1_logfile_queryack
: NULL)),
LEA_COL_LOGS_HANDLER,
read_fw1_logfile_collogs,
LEA_SUSPEND_HANDLER,
read_fw1_logfile_suspend,
LEA_RESUME_HANDLER,
read_fw1_logfile_resume,
OPSEC_SESSION_START_HANDLER,
read_fw1_logfile_start,
OPSEC_SESSION_END_HANDLER,
read_fw1_logfile_end,
OPSEC_SESSION_ESTABLISHED_HANDLER,
read_fw1_logfile_established, OPSEC_EOL);
/*
* initialize opsec-server for authenticated and unauthenticated connections
*/
pServer =
opsec_init_entity (pEnv, LEA_SERVER, OPSEC_ENTITY_NAME, "lea_server",
OPSEC_EOL);
/*
* continue only if opsec initializations were successful
*/
if ((!pClient) || (!pServer))
{
fprintf (stderr,
"ERROR: failed to initialize client/server-pair (%s)\n",
opsec_errno_str (opsec_errno));
cleanup_fw1_environment (pEnv, pClient, pServer);
exit_loggrabber (1);
}
/*
* create LEA-session. differs for connections to FW-1 4.1 and FW-1 NG
*/
if (cfgvalues.fw1_2000)
{
if (cfgvalues.mode == ONLINE)
{
pSession =
lea_new_session (pClient, pServer, LEA_ONLINE, LEA_FILENAME,
*LogfileName, LEA_AT_END);
}
else if (cfgvalues.mode == ONLINE_RESUME)
{
pSession =
lea_new_session (pClient, pServer, LEA_ONLINE, LEA_FILENAME,
*LogfileName, LEA_AT_POS, read_fw1_cursorfile ());
}
else
{
pSession =
lea_new_session (pClient, pServer, LEA_OFFLINE, LEA_FILENAME,
*LogfileName, LEA_AT_START);
}
if (!pSession)
{
fprintf (stderr, "ERROR: failed to create session (%s)\n",
opsec_errno_str (opsec_errno));
cleanup_fw1_environment (pEnv, pClient, pServer);
exit_loggrabber (1);
}
}
else
{
/*
* create a suspended session, i.e. not log data will be sent to client
*/
if (cfgvalues.mode == ONLINE)
{
pSession =
lea_new_suspended_session (pClient, pServer, LEA_ONLINE,
LEA_UNIFIED_SINGLE, *LogfileName,
LEA_AT_END);
}
else if (cfgvalues.mode == ONLINE_RESUME)
{
pSession =
lea_new_suspended_session (pClient, pServer, LEA_ONLINE,
LEA_UNIFIED_SINGLE, *LogfileName,
LEA_AT_POS, read_fw1_cursorfile ());
}
else
{
if ( record_num > 0 )
{
pSession = lea_new_suspended_session (pClient, pServer, LEA_OFFLINE,
LEA_UNIFIED_SINGLE, *LogfileName,
LEA_AT_POS, record_num);
}
else
{
pSession =
lea_new_suspended_session (pClient, pServer, LEA_OFFLINE,
LEA_UNIFIED_SINGLE, *LogfileName,
LEA_AT_START);
}
}
if (!pSession)
{
fprintf (stderr, "ERROR: failed to create session (%s), loc=%d\n",
opsec_errno_str (opsec_errno), record_num);
cleanup_fw1_environment (pEnv, pClient, pServer);
exit_loggrabber (1);
}
/*
* If filters were defined, create the rulebase and register it.
* the session will be resumed, as soon as the server sends the
* filter_ack-event.
* In the case when no filters are used, the suspended session
* will be continued immediately.
*/
if (cfgvalues.audit_mode)
{
if (cfgvalues.audit_filter_count > 0)
{
if ((rb = lea_filter_rulebase_create ()) == NULL)
{
fprintf (stderr, "ERROR: failed to create rulebase\n");
exit_loggrabber (1);
}
for (i = 0; i < cfgvalues.audit_filter_count; i++)
{
if ((rb =
create_audit_filter_rule (rb,
cfgvalues.
audit_filter_array[i]))
== NULL)
{
fprintf (stderr, "ERROR: failed to create rule\n");
exit_loggrabber (1);
}
}
if (lea_filter_rulebase_register (pSession, rb, &rbid) ==
LEA_FILTER_ERR)
{
fprintf (stderr, "ERROR: Cannot register rulebase\n");
}
}
else
{
lea_session_resume (pSession);
}
}
else
{
if (cfgvalues.fw1_filter_count > 0)
{
if ((rb = lea_filter_rulebase_create ()) == NULL)
{
fprintf (stderr, "ERROR: failed to create rulebase\n");
exit_loggrabber (1);
}
for (i = 0; i < cfgvalues.fw1_filter_count; i++)
{
if ((rb =
create_fw1_filter_rule (rb,
cfgvalues.
fw1_filter_array[i])) ==
NULL)
{
fprintf (stderr, "ERROR: failed to create rule\n");
exit_loggrabber (1);
}
}
if (lea_filter_rulebase_register (pSession, rb, &rbid) ==
LEA_FILTER_ERR)
{
fprintf (stderr, "ERROR: Cannot register rulebase\n");
}
}
else
{
lea_session_resume (pSession);
}
}
}
opsec_start_keep_alive (pSession, 0);
/*
* start the opsec loop
*/
opsec_mainloop (pEnv);
/*
* remove opsec stuff
*/
cleanup_fw1_environment (pEnv, pClient, pServer);
if (keepAlive)
{
SLEEP (recoverInterval);
}
}
return 0;
}
/*
* function read_fw1_logfile_queryack
*/
int
read_fw1_logfile_queryack (OpsecSession * psession, int filterID,
eLeaFilterAction filterAction, int filterResult)
{
if (cfgvalues.debug_mode >= 2)
{
fprintf (stderr, "DEBUG: function read_fw1_logfile_queryack\n");
}
if (cfgvalues.debug_mode)
{
fprintf (stderr, "DEBUG: LEA logfile query ack handler was invoked\n");
}
lea_session_resume (psession);
return OPSEC_SESSION_OK;
}
/*
* function string_cat
*/
unsigned int
string_cat (char **dst, const char *src, unsigned int cap)
{
char *buffer = NULL;
unsigned int capacity = cap;
if (cfgvalues.debug_mode >= 2)
{
fprintf (stderr, "DEBUG: function string_cat\n");
}
// allocate memory for the string if NULL
if (*dst == NULL)
{
*dst = (char *) malloc (INITIAL_CAPACITY + 1);
if (*dst == NULL)
{
fprintf (stderr, "ERROR: Out of memory\n");
exit_loggrabber (1);
}
**dst = '\0';
capacity = INITIAL_CAPACITY;
}
// is src NULL, just return the capacity of dst
if (!src)
{
return (capacity);
}
// is the capacity big enough for both src and dst?
if (capacity >= strlen (*dst) + strlen (src))
{
strcat (*dst, src);
return (capacity);
}
// otherwise define the new capacity
capacity =
((capacity + CAPACITY_INCREMENT) >=
(strlen (*dst) + strlen (src))) ? (capacity +
CAPACITY_INCREMENT) : (strlen (*dst) +
strlen (src));
// and allocate a temp buffer for dst
buffer = (char *) malloc (strlen (*dst) + 1);
if (!buffer)
{
fprintf (stderr, "ERROR: Out of memory\n");
exit_loggrabber (1);
}
// copy dst to the tempbuffer and destroy dst
strcpy (buffer, *dst);
free (*dst);
// recreate dst with the new capacity
*dst = (char *) malloc (capacity + 1);
if (*dst == NULL)