util.c File Reference

#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdarg.h>
#include <syslog.h>
#include <errno.h>
#include <sys/stat.h>
#include <time.h>
#include <signal.h>
#include <unistd.h>
#include <grp.h>
#include <pwd.h>
#include <netdb.h>
#include <limits.h>
#include <fcntl.h>
#include "snort.h"
#include "mstring.h"
#include "debug.h"
#include "util.h"
#include "parser.h"
#include "inline.h"

Go to the source code of this file.

Defines
#define	PATH_MAX_UTIL   1024
Functions
void	GenHomenet (char *netdata)
void	GenObfuscationMask (char *netdata)
void	DefineIfaceVar (char *iname, u_char *network, u_char *netmask)
float	CalcPct (float cnt, float total)
int	DisplayBanner ()
void	ts_print (register const struct timeval *tvp, char *timebuf)
int	gmt2local (time_t t)
char *	copy_argv (char **argv)
int	strip (char *data)
void	InitNetmasks ()
void	PrintError (char *str)
void	ErrorMessage (const char *format,...)
void	LogMessage (const char *format,...)
void	FatalError (const char *format,...)
void	FatalPrintError (char *msg)
void	CreatePidFile (char *intf)
void	SetUidGid (void)
void	DropStats (int iParamIgnored)
void	InitProtoNames ()
void	CleanupProtoNames ()
char *	read_infile (char *fname)
void	CheckLogDir (void)
void	GoDaemon (void)
void *	SPAlloc (unsigned long size, struct _SPMemControl *spmc)
void *	SnortAlloc (unsigned long size)
void	SetChroot (char *directory, char **logstore)
char *	CurrentWorkingDir (void)
char *	GetAbsolutePath (char *dir)
Variables
u_long	netmasks [33]

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Define Documentation

#define PATH_MAX_UTIL   1024

Definition at line 64 of file util.c. Referenced by CurrentWorkingDir(), and GetAbsolutePath().

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Function Documentation

float CalcPct (  float  cnt, float  total )

Definition at line 242 of file util.c. Referenced by DropStats().

void CheckLogDir (  void   )

Definition at line 1296 of file util.c. References access, FatalError(), _progvars::log_dir, pv, S_ISDIR, snprintf, STD_BUF, and W_OK. Referenced by CreatePidFile(), and SnortMain().

void CleanupProtoNames (   )

Definition at line 1213 of file util.c. References NULL, and protocol_names.

char* copy_argv (  char **  argv  )

Definition at line 413 of file util.c. References errno, FatalError(), and NULL. Referenced by ParseCmdLine().

void CreatePidFile (  char *  intf  )

Definition at line 719 of file util.c. References _PATH_VARRUN, access, CheckLogDir(), ErrorMessage(), FatalError(), int(), _progvars::log_dir, LogMessage(), NULL, _progvars::pid_filename, _progvars::pid_path, _progvars::pidfile_suffix, pv, _progvars::quiet_flag, _progvars::readmode_flag, S_ISDIR, snprintf, STD_BUF, strlcpy, and W_OK. Referenced by SnortMain().

char* CurrentWorkingDir (  void   )

Return a ptr to the absolute pathname of snort. This memory must be copied to another region if you wish to save it for later use. Definition at line 1538 of file util.c. References NULL, and PATH_MAX_UTIL. Referenced by GetAbsolutePath(), and SetChroot().

void DefineIfaceVar (  char *  iname, u_char *  network, u_char *  netmask )

Definition at line 214 of file util.c. References snprintf, and VarDefine(). Referenced by OpenPcap().

int DisplayBanner (   )

Definition at line 268 of file util.c. References BUILD, and VERSION. Referenced by ParseCmdLine(), and SnortMain().

void DropStats (  int  iParamIgnored  )

Definition at line 998 of file util.c. References _PacketCount::alert_pkts, _PacketCount::arp, CalcPct(), datalink, _PacketCount::discards, DLT_IEEE802_11, _PacketCount::eapol, _PacketCount::ethloopback, _PacketCount::frag_incomp, _PacketCount::frag_mem_faults, _PacketCount::frag_timeout, _PacketCount::frag_trackers, _PacketCount::frags, _PacketCount::icmp, InlineMode(), _PacketCount::ipv6, _PacketCount::ipx, _PacketCount::log_pkts, LogMessage(), _PacketCount::other, _PacketCount::pass_pkts, pc, pcap_perror(), pcap_stats(), pd, pcap_stat::ps_drop, pcap_stat::ps_recv, pv, _progvars::quiet_flag, _progvars::readmode_flag, _PacketCount::rebuild_element, _PacketCount::rebuilt_frags, _PacketCount::rebuilt_segs, _PacketCount::rebuilt_tcp, _PacketCount::str_mem_faults, _PacketCount::tcp, _PacketCount::tcp_stream_pkts, _PacketCount::tcp_streams, _PacketCount::udp, _PacketCount::wifi_control, _PacketCount::wifi_data, and _PacketCount::wifi_mgmt. Referenced by CleanExit(), Restart(), and SigUsrHandler().

void ErrorMessage (  const char *  format,   ... )

Definition at line 570 of file util.c. References _progvars::daemon_flag, LOG_CONS, LOG_DAEMON, LOG_ERR, pv, STD_BUF, syslog(), and vsnprintf. Referenced by AddReference(), base64(), Connect(), CreatePidFile(), Database(), DatabaseInit(), DecodeARP(), DecodeChdlcPkt(), DecodeEapol(), DecodeEthPkt(), DecodeFDDIPkt(), DecodeICMP(), DecodeIEEE80211Pkt(), DecodeIP(), DecodeIPOnly(), DecodeNullPkt(), DecodeOldPflog(), DecodePflog(), DecodePPPoEPkt(), DecodePppPkt(), DecodePppPktEncapsulated(), DecodePppSerialPkt(), DecodeSlipPkt(), DecodeTCP(), DecodeTRPkt(), DecodeUDP(), DecodeVlan(), ExpandVars(), FlowPreprocessor(), Frag3RemoveTracker(), HttpInspectInit(), InitIgnoreHosts(), InitIgnorePorts(), Insert(), InterfaceThread(), OpenAlertSock(), OpenPcap(), ParseClassificationConfig(), ParseConfig(), ParseDatabaseArgs(), ParseMessage(), ParseOutputPlugin(), ParseStream4Args(), Print2ndHeader(), ReferenceSystemAdd(), ScanParseIp(), Select(), SetPktProcessor(), SetUidGid(), and vsyslog().

void FatalError (  const char *  format,   ... )

Definition at line 677 of file util.c. References _progvars::daemon_flag, LOG_CONS, LOG_DAEMON, LOG_ERR, pv, STD_BUF, syslog(), and vsnprintf.

void FatalPrintError (  char *  msg  )

Definition at line 702 of file util.c. References PrintError().

void GenHomenet (  char *  netdata  )

Definition at line 82 of file util.c. References DEBUG_INIT, DEBUG_WRAP, FatalError(), _progvars::homenet, mSplit(), mSplitFree(), _progvars::netmask, netmasks, and pv. Referenced by ParseCmdLine(), and ParseConfig().

void GenObfuscationMask (  char *  netdata  )

Definition at line 143 of file util.c. References DEBUG_INIT, DEBUG_WRAP, FatalError(), mSplit(), mSplitFree(), netmasks, _progvars::obfuscation_mask, _progvars::obfuscation_net, and pv. Referenced by ParseCmdLine().

char* GetAbsolutePath (  char *  dir  )

Given a directory name, return a ptr to a static Definition at line 1555 of file util.c. References CurrentWorkingDir(), LogMessage(), NULL, and PATH_MAX_UTIL. Referenced by SetChroot().

int gmt2local (  time_t  t  )

Definition at line 372 of file util.c. References NULL. Referenced by SnortMain().

void GoDaemon (  void   )

Definition at line 1330 of file util.c. References LogMessage(). Referenced by SnortMain().

void InitNetmasks (   )

Definition at line 505 of file util.c. References netmasks. Referenced by SnortMain().

void InitProtoNames (   )

Definition at line 1174 of file util.c. References char(), protocol_names, and snprintf. Referenced by SnortMain().

void LogMessage (  const char *  format,   ... )

Definition at line 599 of file util.c. References _progvars::daemon_flag, LOG_DAEMON, LOG_NOTICE, pv, _progvars::quiet_flag, STD_BUF, syslog(), and vsnprintf. Referenced by ActivateAction(), ActivateOutputPlugin(), ascii(), BuildMultiPatGroup(), CleanExit(), CommitTransaction(), ConvInit(), CreatePidFile(), DisplayBasePerfStatsConsole(), DisplayEventPerfStats(), DisplayFlowConfig(), DisplayFlowStats(), DisplayStream4Config(), DropStats(), FlowBitsInit(), FlowBitsVerify(), FlowCleanExit(), fpSetDetectSearchMethod(), Frag2Defrag(), Frag3Defrag(), Frag3Expire(), Frag3GlobalInit(), Frag3Init(), Frag3NewTracker(), Frag3ParseArgs(), Frag3ParseGlobalArgs(), Frag3PrintEngineConfig(), Frag3PrintGlobalConfig(), Frag3PrintStats(), Frag3Prune(), GetAbsolutePath(), GetUniqueName(), GoDaemon(), InitOutputPlugins(), InitPlugIns(), InitPreprocessors(), Insert(), InsertFrag(), IpAddrSetPrint(), LoadStateTable(), NewFragTracker(), OpenPcap(), OrderRuleLists(), ParseClassType(), ParseCmdLine(), ParseConfig(), ParseFrag2Args(), ParsePerfMonitorArgs(), ParsePriority(), ParseReference(), ParseRev(), ParseRulesFile(), ParseScanmungeArgs(), ParseSID(), ParseStream4Args(), ParseSyslogArgs(), PortscanInit(), print_thd_local(), print_thd_node(), print_thresholding(), PrintConfig(), PrintConfOpt(), PrintGlobalConf(), PrintPortscanConf(), printRuleListOrder(), PrintServerConf(), ProcessHeadNode(), ProcessUniqueServerConf(), ReadLine(), RebuildFrag(), Restart(), RollbackTransaction(), Scan2Init(), SetPktProcessor(), SetRpcPorts(), SetTags(), SetTelnetPorts(), SetUseDoePtr(), sfRotatePerformanceStatisticsFile(), SigCantHupHandler(), SnortMain(), StoreStreamPkt(), Stream4InitReassembler(), UnifiedLogData(), UnifiedParseArgs(), and XLINK2STATE_ParseArgs().

void PrintError (  char *  str  )

Definition at line 551 of file util.c. References _progvars::daemon_flag, LOG_CONS, LOG_DAEMON, LOG_ERR, pv, and syslog(). Referenced by FatalPrintError(), and SnortMain().

char* read_infile (  char *  fname  )

Definition at line 1238 of file util.c. References errno, FatalError(), int(), NULL, and pcap_strerror(). Referenced by ParseCmdLine(), and ParseConfig().

void SetChroot (  char *  directory, char **  logstore )

Chroot and adjust the pv.log_dir reference Parameters: directory  directory to chroot to logdir  ptr to pv.log_dir Definition at line 1435 of file util.c. References CurrentWorkingDir(), DEBUG_INIT, DEBUG_WRAP, errno, FatalError(), GetAbsolutePath(), NULL, SigCantHupHandler(), and SIGHUP. Referenced by SnortMain().

void SetUidGid (  void   )

just to be on a safe side... Definition at line 813 of file util.c. References DEBUG_INIT, DEBUG_WRAP, ErrorMessage(), FatalError(), groupid, groupname, InlineMode(), NULL, userid, and username. Referenced by SnortMain().

void* SnortAlloc (  unsigned long  size  )

Definition at line 1415 of file util.c. References FatalError(), and NULL. Referenced by AddFragNode(), AlertCSVParseArgs(), ARPspoofHostInit(), Asn1Init(), CheckDBVersion(), CSVEscape(), Database(), DatabaseInit(), DsizeCheckInit(), DupFragNode(), FlowBitsInit(), FlowBitsParse(), Frag3GlobalInit(), Frag3HandleIPOptions(), Frag3Init(), Frag3InitPkt(), Frag3NewTracker(), Frag3ParseArgs(), FragBitsInit(), GetLastCid(), IcmpCodeCheckInit(), IcmpIdCheckInit(), IcmpSeqCheckInit(), IcmpTypeCheckInit(), IpAddrSetCreate(), IpAddrSetParse(), IpIdCheckInit(), IpOptionInit(), IpProtoInit(), IpSameCheckInit(), IpTosCheckInit(), IsDataAtInit(), NewQueryNode(), ParseAlertFastArgs(), ParseAlertFullArgs(), ParseARPspoofHostArgs(), ParseDatabaseArgs(), ParseSyslogArgs(), RpcCheckInit(), SessionInit(), snort_escape_string(), SnortPcreInit(), TcpAckCheckInit(), TCPFlagCheckInit(), TcpSeqCheckInit(), TcpWinCheckInit(), TemplateInit(), TtlCheckInit(), and UpdateLastCid().

void* SPAlloc (  unsigned long  size, struct _SPMemControl *  spmc )

Definition at line 1392 of file util.c. References FatalError(), _SPMemControl::mem_usage, _SPMemControl::memcap, NULL, and _SPMemControl::sp_func. Referenced by InsertFrag(), and NewFragTracker().

int strip (  char *  data  )

Definition at line 461 of file util.c. Referenced by ParseContentListFile(), and ParseRule().

void ts_print (  register const struct timeval *  tvp, char *  timebuf )

Definition at line 310 of file util.c. References bzero, gettimeofday(), _progvars::include_year, pv, snprintf, thiszone, TIMEBUF_SIZE, and _progvars::use_utc. Referenced by AlertFast(), AlertFull(), LogPortscanAlert(), PrintArpHeader(), PrintEapolPkt(), PrintIPPkt(), PrintWifiPkt(), RealAlertCSV(), and SLog().

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Variable Documentation

u_long netmasks[33]

Definition at line 151 of file snort.c.

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