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daq_pcap_spooler.c
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daq_pcap_spooler.c
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/*
** Based on Sourcefire External DAQ Module examples, and some code from other DAQ Modules.
**
** Author: Eric Lauzon <[email protected]> 2012
**
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License Version 2 as
** published by the Free Software Foundation. You may not use, modify or
** distribute this program under any other version of the GNU General
** Public License.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA,
** or look on the Interweb!
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <dirent.h>
#include <fcntl.h>
#include <limits.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <time.h>
/* SF Includes */
#include <daq_api.h>
#include <sfbpf.h>
#include <sfbpf_dlt.h>
/* SF Includes */
#include <errno.h>
extern int errno;
#include "daq_pcap_spooler.h"
static char *pcap_file_prefix = NULL;
#ifdef BUILDING_SO
DAQ_SO_PUBLIC const DAQ_Module_t DAQ_MODULE_DATA =
#else
const DAQ_Module_t pcap_spooler_daq_module_data =
#endif
{
.api_version = DAQ_API_VERSION,
.module_version = DAQ_PCAP_SPOOLER_VERSION,
.name = "pcap_spooler",
/* Lie to snort so people are not confused when they try to use us ... we are the pigmogner */
.type = DAQ_TYPE_FILE_CAPABLE|DAQ_TYPE_INTF_CAPABLE,
.initialize = pcap_spooler_daq_initialize,
.set_filter = pcap_spooler_daq_set_filter,
.start = pcap_spooler_daq_start,
.acquire = pcap_spooler_daq_acquire,
.breakloop = pcap_spooler_daq_breakloop,
.stop = pcap_spooler_daq_stop,
.shutdown = pcap_spooler_daq_shutdown,
.check_status = pcap_spooler_daq_check_status,
.get_stats = pcap_spooler_daq_get_stats,
.reset_stats = pcap_spooler_daq_reset_stats,
.get_snaplen = pcap_spooler_daq_get_snaplen,
.get_datalink_type = pcap_spooler_daq_get_datalink_type,
.get_capabilities = pcap_spooler_daq_get_capabilities,
.get_errbuf = pcap_spooler_daq_get_errbuf,
.set_errbuf = pcap_spooler_daq_set_errbuf,
#ifdef BUILDING_SO
.inject = (int (*)())pcap_spooler_daq_dummy_funct,
.get_device_index = (int (*)())pcap_spooler_daq_dummy_funct,
#else
/* Unsupported */
.inject = NULL,
.get_device_index = NULL,
/* Unsupported */
#endif /* BUILDING_SO */
};
/**
**
** PCAP SPOOLER FUNCTIONS
**
**/
static void pcap_spooler_debug_print(pcap_spooler_context *i_psctx,char *fmt,...)
{
va_list ap;
if((i_psctx == NULL) ||
(fmt == NULL))
{
return;
}
if(i_psctx->enable_debug)
{
printf("===============================================\n"
"[DAQ] <++> [%s] Debug Message \n"
"===============================================\n",
#ifdef BUILDING_SO
DAQ_MODULE_DATA.name
#else
pcap_spooler_daq_module_data.name
#endif
);
va_start(ap, fmt);
vprintf(fmt,ap);
va_end(ap);
printf("===============================================\n");
}
return;
}
static u_int32_t pcap_spooler_read_bulk(int fd,void *buffer, ssize_t read_size,ssize_t *r_read_size)
{
if( (buffer == NULL) ||
(r_read_size == NULL) ||
(fd <= 0) ||
(read_size <= 0))
{
return 1;
}
if( (*r_read_size=read(fd,buffer,read_size)) <= 0)
{
return 1;
}
return 0;
}
static u_int32_t pcap_spooler_write_pcap_reference(pcap_spooler_context *i_psctx)
{
if( (i_psctx == NULL) ||
(i_psctx->packet_reference_fd < 0))
{
return 1;
}
/* rewind the fd */
if( lseek(i_psctx->packet_reference_fd,0,SEEK_SET) < 0)
{
return 1;
}
if( write(i_psctx->packet_reference_fd,&i_psctx->pcap_reference,sizeof(PcapReference)) != sizeof(PcapReference))
{
pcap_spooler_debug_print(i_psctx,(char *)
"\tError writing to [%s]\n",
i_psctx->pcap_reference_file);
return 1;
}
pcap_spooler_debug_print(i_psctx,(char *)
"\tWriting information to [%s] \n"
"\t--------------\n"
"\tPSRF Spooler Directory -> [%s] \n"
"\tPSRF Archive Direcotory -> [%s] \n"
"\tPSRF File Prefix -> [%s] \n"
"\tPSRF timestamp -> [%u] \n"
#ifdef LARGEFILE_SUPPORT
"\tPSRF last read offset -> [%llu] \n"
#else
"\tPSRF last read offset -> [%u] \n"
#endif
"\tPSRF saved size -> [%u] \n"
"\tPSRF operation mode -> [%d] \n"
"\t--------------\n\n",
i_psctx->pcap_reference_file,
i_psctx->pcap_reference.spooler_directory,
i_psctx->pcap_reference.archive_directory,
i_psctx->pcap_reference.file_prefix,
i_psctx->pcap_reference.timestamp,
#ifdef LARGEFILE_SUPPORT
(u_int64_t)i_psctx->pcap_reference.last_read_offset,
#else
(u_int32_t)i_psctx->pcap_reference.last_read_offset,
#endif
(u_int32_t)i_psctx->pcap_reference.saved_size,
i_psctx->pcap_reference.operation_mode);
return 0;
}
static u_int32_t pcap_spooler_get_stat(int fd,struct stat *pr_stat)
{
if( (pr_stat == NULL) ||
(fd < 0))
{
return 1;
}
if( fstat(fd,pr_stat) < 0)
{
return 1;
}
return 0;
}
static u_int32_t pcap_spooler_get_header(pcap_spooler_context *i_psctx)
{
struct pcap_file_header pfh;
ssize_t read_size = 0;
if( (i_psctx == NULL) ||
(i_psctx->pcap_fd < 0))
{
return 1;
}
memset(&pfh,'\0',sizeof(struct pcap_file_header));
i_psctx->pcap_stat.st_size = 0;
while(i_psctx->pcap_stat.st_size < (ssize_t)sizeof(struct pcap_file_header))
{
if( pcap_spooler_get_stat(i_psctx->pcap_fd,&i_psctx->pcap_stat))
{
pcap_spooler_debug_print(i_psctx,(char *)
"\tError calling fstat on [%s]\n",
i_psctx->pcap_file_temp_name);
return 1;
}
pcap_spooler_debug_print(i_psctx,(char *)
"\tNo data has been written to [%s], waiting for pcap_file_header ...\n",
i_psctx->pcap_file_temp_name);
usleep(200);
}
if(pcap_spooler_read_bulk(i_psctx->pcap_fd,&pfh,sizeof(struct pcap_file_header),&read_size))
{
pcap_spooler_debug_print(i_psctx,(char *)
"\tError reading from [%s]\n",
i_psctx->pcap_file_temp_name);
return 1;
}
if( (read_size < (ssize_t)(sizeof(struct pcap_file_header))) ||
(pfh.magic != TCPDUMP_MAGIC))
{
pcap_spooler_debug_print(i_psctx,(char *)
"\tInvalid PCAP header for file [%s]\n",
i_psctx->pcap_file_temp_name);
return 1;
}
i_psctx->snaplen = pfh.snaplen;
i_psctx->data_link_type = pfh.linktype;
return 0;
}
static u_int32_t pcap_spooler_close_pcap(pcap_spooler_context *i_psctx)
{
if(i_psctx == NULL)
{
return 1;
}
if(i_psctx->pcap_fd)
{
close(i_psctx->pcap_fd);
}
i_psctx->pcap_fd=-1;
i_psctx->has_PCAP = 0;
return 0;
}
static u_int32_t pcap_spooler_open_pcap(pcap_spooler_context *i_psctx)
{
/* YAF */
char yaf_timestamp_str[15] = {0};
char yaf_serial_str[6] = {0};
if(i_psctx == NULL)
{
return 1;
}
memset(i_psctx->pcap_file_temp_name,'\0',PATH_MAX);
switch(i_psctx->operation_mode)
{
case OPERATION_MODE_YAF:
if( (pcap_spooler_yaf_utc_to_timestamp((time_t)i_psctx->pcap_reference.timestamp,yaf_timestamp_str)))
{
return 1;
}
snprintf(yaf_serial_str,6,"%.05d",i_psctx->pcap_reference.serial);
snprintf(i_psctx->pcap_file_temp_name,PATH_MAX,"%s/%s%s_%s.pcap",
i_psctx->pcap_reference.spooler_directory,
i_psctx->pcap_reference.file_prefix,
yaf_timestamp_str,
yaf_serial_str);
break;
default:
snprintf(i_psctx->pcap_file_temp_name,PATH_MAX,"%s/%s.%u",
i_psctx->pcap_reference.spooler_directory,
i_psctx->pcap_reference.file_prefix,
i_psctx->pcap_reference.timestamp);
break;
}
pcap_spooler_debug_print(i_psctx,(char *)
"\tOpening [%s] \n",
i_psctx->pcap_file_temp_name);
if( (i_psctx->pcap_fd = open(i_psctx->pcap_file_temp_name,O_RDONLY)) <=0)
{
pcap_spooler_debug_print(i_psctx,(char *)
"\tError opening file [%s]\n",
i_psctx->pcap_file_temp_name,
strerror(errno));
return 1;
}
/* Make sure the file has some data,force the kernel. */
if( fsync(i_psctx->pcap_fd))
{
pcap_spooler_debug_print(i_psctx,(char *)
"\tError calling fsync() on [%s]\n",
i_psctx->pcap_file_temp_name);
return 1;
}
if( pcap_spooler_get_stat(i_psctx->pcap_fd,&i_psctx->pcap_stat))
{
pcap_spooler_debug_print(i_psctx,(char *)
"\tError calling fstat on [%s]\n",
i_psctx->pcap_file_temp_name);
return 1;
}
/*Technically we do no read cross block device ..unless you have a wierd setup and you will know
then how to change this behavior */
if(i_psctx->read_buffer == NULL)
{
if( (i_psctx->read_buffer=calloc(i_psctx->pcap_stat.st_blksize,i_psctx->block_size_read)) == NULL)
{
pcap_spooler_debug_print(i_psctx,(char *)
"\tError reading from [%s]\n",
i_psctx->pcap_file_temp_name);
return 1;
}
i_psctx->read_buffer_size = i_psctx->pcap_stat.st_blksize * i_psctx->block_size_read;
}
else
{
memset(i_psctx->read_buffer,'\0',i_psctx->read_buffer_size);
}
/* Shouldn't be needed but just in case */
if(lseek(i_psctx->pcap_fd,0,SEEK_SET) != 0)
{
pcap_spooler_debug_print(i_psctx,(char *)
"\tError calling lseek() on [%s]\n",
i_psctx->pcap_file_temp_name);
return 1;
}
if( pcap_spooler_get_header(i_psctx))
{
return 1;
}
if(i_psctx->bpf_recompile_filter)
{
if( pcap_spooler_daq_set_filter((void *)i_psctx,i_psctx->bpf_filter_backup))
{
return 1;
}
}
i_psctx->has_PCAP = 1;
return 0;
}
static u_int32_t pcap_spooler_open_pcap_reference(pcap_spooler_context *i_psctx)
{
ssize_t read_len = 0;
if(i_psctx == NULL)
{
return 1;
}
if( ( i_psctx->packet_reference_fd = open(i_psctx->pcap_reference_file,O_RDWR)) < 0)
{
pcap_spooler_debug_print(i_psctx,(char *)
"\tError opening [%s]\n",
i_psctx->pcap_reference_file);
return 1;
}
if( (pcap_spooler_read_bulk(i_psctx->packet_reference_fd,&i_psctx->pcap_reference,sizeof(PcapReference),&read_len)))
{
pcap_spooler_debug_print(i_psctx,(char *)
"\tError reading [%s]\n",
i_psctx->pcap_reference_file);
i_psctx->packet_reference_fd = -1;
return 1;
}
if( (read_len < (ssize_t)sizeof(PcapReference)) ||
(read_len > (ssize_t)sizeof(PcapReference)))
{
close(i_psctx->packet_reference_fd);
pcap_spooler_debug_print(i_psctx,(char *)
"\tError reading [%s], invalid read size [%u] should be [%u]\n",
i_psctx->pcap_reference_file,
read_len,
sizeof(PcapReference));
i_psctx->packet_reference_fd = -1;
return 1;
}
pcap_file_prefix = i_psctx->pcap_reference.file_prefix;
return 0;
}
static u_int32_t pcap_spooler_create_pcap_reference(pcap_spooler_context *i_psctx)
{
if( (i_psctx == NULL) ||
(i_psctx->packet_reference_fd > 0))
{
return 1;
}
if( (i_psctx->packet_reference_fd = open(i_psctx->pcap_reference_file,O_CREAT|O_RDWR,S_IRUSR|S_IWUSR)) < 0)
{
pcap_spooler_debug_print(i_psctx,(char *)
"\tUnable to create [%s]\n",
i_psctx->pcap_reference_file);
return 1;
}
/* Initialize PR */
memset(&i_psctx->pcap_reference,'\0',sizeof(PcapReference));
memcpy(i_psctx->pcap_reference.file_prefix,i_psctx->file_prefix,PATH_MAX);
pcap_file_prefix = i_psctx->pcap_reference.file_prefix;
memcpy(i_psctx->pcap_reference.spooler_directory,i_psctx->spooler_directory,PATH_MAX);
memcpy(i_psctx->pcap_reference.archive_directory,i_psctx->archive_directory,PATH_MAX);
i_psctx->pcap_reference.operation_mode = i_psctx->operation_mode;
if( (pcap_spooler_write_pcap_reference(i_psctx)))
{
pcap_spooler_debug_print(i_psctx,(char *)
"\tUnable to write [%s]\n",
i_psctx->pcap_reference_file);
return 1;
}
return 0;
}
static u_int32_t pcap_spooler_compare_pcap_reference(pcap_spooler_context *i_psctx)
{
if( (i_psctx == NULL) ||
(i_psctx->packet_reference_fd < 0) )
{
return 1;
}
if( (strncmp(i_psctx->pcap_reference.file_prefix,i_psctx->file_prefix,strlen(i_psctx->pcap_reference.file_prefix)) != 0 ) ||
(strncmp(i_psctx->pcap_reference.spooler_directory,i_psctx->spooler_directory,strlen(i_psctx->pcap_reference.spooler_directory)) !=0 ) ||
(strncmp(i_psctx->pcap_reference.archive_directory,i_psctx->archive_directory,strlen(i_psctx->pcap_reference.archive_directory)) !=0 ) ||
(i_psctx->pcap_reference.operation_mode != i_psctx->operation_mode))
{
pcap_spooler_debug_print(i_psctx,(char *)
"\tERROR: [information from pcap spooler reference file [%s] does not match the DAQ variables] \n"
"\t--------------\n\n"
"\tPSRF Spooler Directory -> [%s] | DAQ Variable [%s] \n"
"\tPSRF Archive Direcotory -> [%s] | DAQ Variable [%s]\n"
"\tPSRF File Prefix -> [%s] | DAQ Variable [%s] \n"
"\tPSRF Operation mode [%d] | DAQ Variable [%d] \n",
i_psctx->pcap_reference_file,
i_psctx->pcap_reference.spooler_directory,i_psctx->spooler_directory,
i_psctx->pcap_reference.archive_directory,i_psctx->archive_directory,
i_psctx->pcap_reference.file_prefix,i_psctx->file_prefix,
i_psctx->pcap_reference.operation_mode,i_psctx->operation_mode);
return 1;
}
return 0;
}
/*
Default uninitialized values,
people should be carefull if they want to run multiple instance in this context...
*/
static u_int32_t pcap_spooler_default(pcap_spooler_context *i_psctx)
{
if(i_psctx == NULL)
{
return 1;
}
if(i_psctx->operation_mode == 0)
{
i_psctx->operation_mode = OPERATION_MODE_PCAP;
}
if(i_psctx->file_prefix == NULL)
{
switch(i_psctx->operation_mode)
{
case OPERATION_MODE_YAF:
if( (i_psctx->file_prefix = strndup(DEFAULT_PCAP_SPOOLER_YAF_PREFIX,PATH_MAX)) == NULL)
{
return 1;
}
break;
default:
if( (i_psctx->file_prefix = strndup(DEFAULT_PCAP_SPOOLER_FILE_PREFIX,PATH_MAX)) == NULL)
{
return 1;
}
break;
}
}
if(i_psctx->spooler_directory == NULL)
{
if( (i_psctx->spooler_directory = strndup(DEFAULT_PCAP_SPOOLER_SPOOL_DIRECTORY,PATH_MAX)) == NULL)
{
return 1;
}
}
if(i_psctx->archive_directory == NULL)
{
if( (i_psctx->archive_directory = strndup(DEFAULT_PCAP_SPOOLER_ARCHIVE_DIRECTORY,PATH_MAX)) == NULL)
{
return 1;
}
}
if(i_psctx->pcap_reference_file == NULL)
{
if( (i_psctx->pcap_reference_file = strndup(DEFAULT_PCAP_SPOOLER_REFERENCE_FILE,PATH_MAX)) == NULL)
{
return 1;
}
}
if(i_psctx->pcap_update_window == 0)
{
i_psctx->pcap_update_window = DEFAULT_PCAP_SPOOLER_UPDATE_WINDOW;
}
if(i_psctx->enable_archive == 0)
{
pcap_spooler_debug_print(i_psctx,(char *)
"\tArchive mode disabled \n");
}
if(i_psctx->block_size_read == 0)
{
i_psctx->block_size_read = DEFAULT_PCAP_SPOOLER_BLOCK_MULTIPLE;
}
return 0;
}
static u_int32_t pcap_spooler_initialize(pcap_spooler_context *i_psctx)
{
DIR *tdir = NULL;
if(i_psctx == NULL)
{
return 1;
}
/* Check if we can access everything */
if( (tdir = opendir(i_psctx->spooler_directory)) == NULL)
{
pcap_spooler_debug_print(i_psctx,(char *)
"\t[%s]: Unable to open [%s] \n",
__FUNCTION__,
i_psctx->spooler_directory);
return 1;
}
else
{
i_psctx->spooler_dir = tdir;
tdir = NULL;
}
if(i_psctx->enable_archive)
{
if( (tdir = opendir(i_psctx->archive_directory)) == NULL)
{
pcap_spooler_debug_print(i_psctx,(char *)
"\t[%s]: Unable to open [%s] \n",
__FUNCTION__,
i_psctx->archive_directory);
return 1;
}
closedir(tdir);
tdir = NULL;
}
/* Open Packt Reference */
if( pcap_spooler_open_pcap_reference(i_psctx))
{
if( (pcap_spooler_create_pcap_reference(i_psctx)))
{
pcap_spooler_debug_print(i_psctx,(char *)
"\t[%s]: Unable to create [%s] \n",
__FUNCTION__,
i_psctx->pcap_reference_file);
return 1;
}
}
else
{
if(pcap_spooler_compare_pcap_reference(i_psctx))
{
return 1;
}
/* We are already have a file lets see */
if( i_psctx->pcap_reference.timestamp !=0 )
{
if(pcap_spooler_open_pcap(i_psctx))
{
pcap_spooler_debug_print(i_psctx,(char *)
"\t[%s]: Unable to open current file, will monitor directory for activity.\n",
__FUNCTION__);
}
}
}
i_psctx->state=DAQ_STATE_INITIALIZED;
return 0;
}
/*
Initialize context from arguemnt and default if needed
*/
static int pcap_spooler_parse_args(pcap_spooler_context *i_psctx,const DAQ_Config_t * config,void **ctxt_ptr)
{
DAQ_Dict *entry = NULL;
unsigned int str_len = 0;
if( (i_psctx == NULL) ||
(config == NULL) ||
(ctxt_ptr == NULL))
{
return DAQ_ERROR;
}
for (entry = config->values; entry; entry = entry->next)
{
str_len = 0;
if (!strcmp(entry->key, "file_prefix"))
{
if( (i_psctx->file_prefix = strndup(entry->value,PATH_MAX)) == NULL)
{
return DAQ_ERROR;
}
}
if (!strcmp(entry->key, "spool_directory"))
{
str_len = strlen(entry->value);
if(str_len > PATH_MAX)
{
return DAQ_ERROR;
}
else
{
if(entry->value[str_len] == '\\')
{
entry->value[str_len] = 0x00;
}
}
if( (i_psctx->spooler_directory = strndup(entry->value,PATH_MAX)) == NULL)
{
return DAQ_ERROR;
}
}
if (!strcmp(entry->key, "archive_directory"))
{
str_len = strlen(entry->value);
if(str_len > PATH_MAX)
{
return DAQ_ERROR;
}
else
{
if(entry->value[str_len] == '\\')
{
entry->value[str_len] = 0x00;
}
}
if( (i_psctx->archive_directory = strndup(entry->value,PATH_MAX)) == NULL)
{
return DAQ_ERROR;
}
}
if (!strcmp(entry->key, "pcap_reference_file"))
{
if( (i_psctx->pcap_reference_file = strndup(entry->value,PATH_MAX)) == NULL)
{
return DAQ_ERROR;
}
}
if (!strcmp(entry->key, "pcap_update_window"))
{
if( (i_psctx->pcap_update_window = strtoul(entry->value,NULL,10)) == 0)
{
return DAQ_ERROR;
}
}
if (!strcmp(entry->key, "block_size_read"))
{
if( (i_psctx->block_size_read = strtoul(entry->value,NULL,10)) == 0)
{
return DAQ_ERROR;
}
}
if (!strcmp(entry->key, "enable_archive"))
{
if( (i_psctx->enable_archive = strtoul(entry->value,NULL,10)) == 0)
{
return DAQ_ERROR;
}
}
if (!strcmp(entry->key, "enable_debug"))
{
if( (i_psctx->enable_debug = strtoul(entry->value,NULL,10)) == 0)
{
return DAQ_ERROR;
}
}
if (!strcmp(entry->key, "operation_mode"))
{
char *def_mode = NULL;
if( (def_mode = strndup(entry->value,32)) == NULL)
{
return DAQ_ERROR;
}
if( (strncasecmp(def_mode,"pcap",32) == 0))
{
i_psctx->operation_mode = OPERATION_MODE_PCAP;
}
else if( (strncasecmp(def_mode,"yaf",32) == 0))
{
i_psctx->operation_mode = OPERATION_MODE_YAF;
}
else
{
free(def_mode);
return DAQ_ERROR;
}
free(def_mode);
}
}
if(pcap_spooler_default(i_psctx))
{
return DAQ_ERROR;
}
if(pcap_spooler_initialize(i_psctx))
{
return DAQ_ERROR;
}
return DAQ_SUCCESS;
}
static u_int32_t pcap_spooler_move_pcap(pcap_spooler_context *i_psctx)
{
char old_path[PATH_MAX] = {0};
char new_path[PATH_MAX] = {0};
/* YAF */
char yaf_timestamp_str[15] = {0};
/* YAF */
if(i_psctx == NULL)
{
return 1;
}
switch(i_psctx->operation_mode)
{
case OPERATION_MODE_YAF:
if( (pcap_spooler_yaf_utc_to_timestamp((time_t)i_psctx->pcap_reference.timestamp,yaf_timestamp_str)))
{
return 1;
}
if( (snprintf(old_path,PATH_MAX,"%s/%s%s_%.5u.pcap",
i_psctx->pcap_reference.spooler_directory,
i_psctx->pcap_reference.file_prefix,
yaf_timestamp_str,
i_psctx->pcap_reference.serial)) < 0)
{
return 1;
}
if( (snprintf(new_path,PATH_MAX,"%s/%s%s_%.5u.pcap",
i_psctx->pcap_reference.archive_directory,
i_psctx->pcap_reference.file_prefix,
yaf_timestamp_str,
i_psctx->pcap_reference.serial)) < 0)
{
return 1;
}
break;
default:
if( (snprintf(old_path,PATH_MAX,"%s/%s.%u",
i_psctx->pcap_reference.spooler_directory,
i_psctx->pcap_reference.file_prefix,
i_psctx->pcap_reference.timestamp)) < 0)
{
return 1;
}
if( (snprintf(new_path,PATH_MAX,"%s/%s.%u",
i_psctx->pcap_reference.archive_directory,
i_psctx->pcap_reference.file_prefix,
i_psctx->pcap_reference.timestamp)) < 0)
{
return 1;
}
break;
}
pcap_spooler_debug_print(i_psctx,(char *)
"\tMoving file [%s] to [%s] \n",
old_path,new_path);
if( rename(old_path,new_path) <0)
{
return 1;
}
return 0;
}
static int pcap_spooler_directory_filter(const struct dirent *pcap_file_comp)
{
unsigned int pcap_file_prefix_len = 0;
int fnamelen = 0;
int operation_mode = 0;
if(pcap_file_comp == NULL)
{
return 0;
}
if(pcap_file_comp->d_type != DT_REG)
{
return 0;
}
/* Not the cleanest way, we could use a static ...but could cause trouble */
if(strstr(pcap_file_comp->d_name,"yaf_") != NULL)
{
operation_mode = OPERATION_MODE_YAF;
}
else
{
operation_mode = OPERATION_MODE_PCAP;
}
pcap_file_prefix_len = strlen(pcap_file_prefix);
switch(operation_mode)
{
case OPERATION_MODE_YAF:
/* Ignore lock files */
fnamelen = strlen(pcap_file_comp->d_name);
if( (fnamelen <= 34) &&
(fnamelen >= 29))
{
if(strncmp(pcap_file_comp->d_name,"yaf_",4) == 0 )
{
if(fnamelen <= 29)
{
if(strncmp(&pcap_file_comp->d_name[24],".pcap",5) == 0 )
{
return 1;
}
}
}
}
break;
default:
if(strncmp(pcap_file_prefix,pcap_file_comp->d_name,pcap_file_prefix_len) == 0)
{
return 1;
}
break;
}
return 0;
}
static u_int32_t pcap_spooler_yaf_timestamp_to_utc(char *timestamp,time_t *out_utc)
{
if( (timestamp == NULL) ||
(out_utc == NULL))
{
return 1;
}
struct tm ltime;