| %{ |
| #include "ipf.h" |
| #include <sys/ioctl.h> |
| #include <syslog.h> |
| #ifdef IPFILTER_BPF |
| # include <pcap-bpf.h> |
| # include <pcap.h> |
| #endif |
| #include "netinet/ip_pool.h" |
| #include "netinet/ip_htable.h" |
| #include "netinet/ipl.h" |
| #include "ipf_l.h" |
| |
| #define YYDEBUG 1 |
| #define DOALL(x) for (fr = frc; fr != NULL; fr = fr->fr_next) { x } |
| #define DOREM(x) for (; fr != NULL; fr = fr->fr_next) { x } |
| |
| extern void yyerror __P((char *)); |
| extern int yyparse __P((void)); |
| extern int yylex __P((void)); |
| extern int yydebug; |
| extern FILE *yyin; |
| extern int yylineNum; |
| |
| static void newrule __P((void)); |
| static void setipftype __P((void)); |
| static u_32_t lookuphost __P((char *)); |
| static void dobpf __P((int, char *)); |
| static void resetaddr __P((void)); |
| static struct alist_s *newalist __P((struct alist_s *)); |
| static u_int makehash __P((struct alist_s *)); |
| static int makepool __P((struct alist_s *)); |
| static frentry_t *addrule __P((void)); |
| static void setsyslog __P((void)); |
| static void unsetsyslog __P((void)); |
| static void fillgroup __P((frentry_t *)); |
| |
| frentry_t *fr = NULL, *frc = NULL, *frtop = NULL, *frold = NULL; |
| |
| static int ifpflag = 0; |
| static int nowith = 0; |
| static int dynamic = -1; |
| static int pooled = 0; |
| static int hashed = 0; |
| static int nrules = 0; |
| static int newlist = 0; |
| static int added = 0; |
| static int ipffd = -1; |
| static ioctlfunc_t ipfioctl[IPL_LOGSIZE]; |
| static addfunc_t ipfaddfunc = NULL; |
| static wordtab_t *savewords; |
| |
| %} |
| %union { |
| char *str; |
| u_32_t num; |
| struct in_addr ipa; |
| frentry_t fr; |
| frtuc_t *frt; |
| struct alist_s *alist; |
| struct { |
| u_short p1; |
| u_short p2; |
| int pc; |
| } pc; |
| struct { |
| union i6addr a; |
| union i6addr m; |
| } ipp; |
| union i6addr ip6; |
| }; |
| |
| %type <num> portnum facility priority icmpcode seclevel secname icmptype |
| %type <num> opt compare range opttype flagset optlist ipv6hdrlist ipv6hdr |
| %type <ipa> hostname ipv4 ipv4mask |
| %type <ip6> ipv6mask |
| %type <ipp> addr |
| %type <str> servicename name |
| %type <pc> portrange portcomp |
| %type <alist> addrlist poollist |
| |
| %token <num> YY_NUMBER YY_HEX |
| %token <str> YY_STR |
| %token YY_COMMENT |
| %token YY_CMP_EQ YY_CMP_NE YY_CMP_LE YY_CMP_GE YY_CMP_LT YY_CMP_GT |
| %token YY_RANGE_OUT YY_RANGE_IN |
| %token <ip6> YY_IPV6 |
| |
| %token IPFY_PASS IPFY_BLOCK IPFY_COUNT IPFY_CALL |
| %token IPFY_RETICMP IPFY_RETRST IPFY_RETICMPASDST |
| %token IPFY_IN IPFY_OUT |
| %token IPFY_QUICK IPFY_ON IPFY_OUTVIA IPFY_INVIA |
| %token IPFY_DUPTO IPFY_TO IPFY_FROUTE IPFY_REPLY_TO IPFY_ROUTETO |
| %token IPFY_TOS IPFY_TTL IPFY_PROTO |
| %token IPFY_HEAD IPFY_GROUP |
| %token IPFY_AUTH IPFY_PREAUTH IPFY_DIVERT |
| %token IPFY_LOG IPFY_BODY IPFY_FIRST IPFY_LEVEL IPFY_ORBLOCK |
| %token IPFY_LOGTAG IPFY_MATCHTAG IPFY_SETTAG IPFY_SKIP |
| %token IPFY_FROM IPFY_ALL IPFY_ANY IPFY_BPFV4 IPFY_BPFV6 IPFY_POOL IPFY_HASH |
| %token IPFY_PPS |
| %token IPFY_ESP IPFY_AH |
| %token IPFY_WITH IPFY_AND IPFY_NOT IPFY_NO IPFY_OPT |
| %token IPFY_TCPUDP IPFY_TCP IPFY_UDP |
| %token IPFY_FLAGS IPFY_MULTICAST |
| %token IPFY_MASK IPFY_BROADCAST IPFY_NETWORK IPFY_NETMASKED IPFY_PEER |
| %token IPFY_PORT |
| %token IPFY_NOW |
| %token IPFY_ICMP IPFY_ICMPTYPE IPFY_ICMPCODE |
| %token IPFY_IPOPTS IPFY_SHORT IPFY_NAT IPFY_BADSRC IPFY_LOWTTL IPFY_FRAG |
| %token IPFY_MBCAST IPFY_BAD IPFY_BADNAT IPFY_OOW IPFY_NEWISN IPFY_NOICMPERR |
| %token IPFY_KEEP IPFY_STATE IPFY_FRAGS IPFY_LIMIT IPFY_STRICT IPFY_AGE |
| %token IPFY_IPOPT_NOP IPFY_IPOPT_RR IPFY_IPOPT_ZSU IPFY_IPOPT_MTUP |
| %token IPFY_IPOPT_MTUR IPFY_IPOPT_ENCODE IPFY_IPOPT_TS IPFY_IPOPT_TR |
| %token IPFY_IPOPT_SEC IPFY_IPOPT_LSRR IPFY_IPOPT_ESEC IPFY_IPOPT_CIPSO |
| %token IPFY_IPOPT_SATID IPFY_IPOPT_SSRR IPFY_IPOPT_ADDEXT IPFY_IPOPT_VISA |
| %token IPFY_IPOPT_IMITD IPFY_IPOPT_EIP IPFY_IPOPT_FINN IPFY_IPOPT_DPS |
| %token IPFY_IPOPT_SDB IPFY_IPOPT_NSAPA IPFY_IPOPT_RTRALRT IPFY_IPOPT_UMP |
| %token IPFY_SECCLASS IPFY_SEC_UNC IPFY_SEC_CONF IPFY_SEC_RSV1 IPFY_SEC_RSV2 |
| %token IPFY_SEC_RSV4 IPFY_SEC_SEC IPFY_SEC_TS IPFY_SEC_RSV3 |
| |
| %token IPF6_V6HDRS IPFY_IPV6OPT IPFY_IPV6OPT_DSTOPTS IPFY_IPV6OPT_HOPOPTS |
| %token IPFY_IPV6OPT_IPV6 IPFY_IPV6OPT_NONE IPFY_IPV6OPT_ROUTING |
| |
| %token IPFY_ICMPT_UNR IPFY_ICMPT_ECHO IPFY_ICMPT_ECHOR IPFY_ICMPT_SQUENCH |
| %token IPFY_ICMPT_REDIR IPFY_ICMPT_TIMEX IPFY_ICMPT_PARAMP IPFY_ICMPT_TIMEST |
| %token IPFY_ICMPT_TIMESTREP IPFY_ICMPT_INFOREQ IPFY_ICMPT_INFOREP |
| %token IPFY_ICMPT_MASKREQ IPFY_ICMPT_MASKREP IPFY_ICMPT_ROUTERAD |
| %token IPFY_ICMPT_ROUTERSOL |
| |
| %token IPFY_ICMPC_NETUNR IPFY_ICMPC_HSTUNR IPFY_ICMPC_PROUNR IPFY_ICMPC_PORUNR |
| %token IPFY_ICMPC_NEEDF IPFY_ICMPC_SRCFAIL IPFY_ICMPC_NETUNK IPFY_ICMPC_HSTUNK |
| %token IPFY_ICMPC_ISOLATE IPFY_ICMPC_NETPRO IPFY_ICMPC_HSTPRO |
| %token IPFY_ICMPC_NETTOS IPFY_ICMPC_HSTTOS IPFY_ICMPC_FLTPRO IPFY_ICMPC_HSTPRE |
| %token IPFY_ICMPC_CUTPRE |
| |
| %token IPFY_FAC_KERN IPFY_FAC_USER IPFY_FAC_MAIL IPFY_FAC_DAEMON IPFY_FAC_AUTH |
| %token IPFY_FAC_SYSLOG IPFY_FAC_LPR IPFY_FAC_NEWS IPFY_FAC_UUCP IPFY_FAC_CRON |
| %token IPFY_FAC_LOCAL0 IPFY_FAC_LOCAL1 IPFY_FAC_LOCAL2 IPFY_FAC_LOCAL3 |
| %token IPFY_FAC_LOCAL4 IPFY_FAC_LOCAL5 IPFY_FAC_LOCAL6 IPFY_FAC_LOCAL7 |
| %token IPFY_FAC_SECURITY IPFY_FAC_FTP IPFY_FAC_AUTHPRIV IPFY_FAC_AUDIT |
| %token IPFY_FAC_LFMT IPFY_FAC_CONSOLE |
| |
| %token IPFY_PRI_EMERG IPFY_PRI_ALERT IPFY_PRI_CRIT IPFY_PRI_ERR IPFY_PRI_WARN |
| %token IPFY_PRI_NOTICE IPFY_PRI_INFO IPFY_PRI_DEBUG |
| %% |
| file: line |
| | assign |
| | file line |
| | file assign |
| ; |
| |
| line: xx rule { while ((fr = frtop) != NULL) { |
| frtop = fr->fr_next; |
| fr->fr_next = NULL; |
| (*ipfaddfunc)(ipffd, ipfioctl[IPL_LOGIPF], fr); |
| fr->fr_next = frold; |
| frold = fr; |
| } |
| resetlexer(); |
| } |
| | YY_COMMENT |
| ; |
| |
| xx: { newrule(); } |
| ; |
| |
| assign: YY_STR assigning YY_STR ';' { set_variable($1, $3); |
| resetlexer(); |
| free($1); |
| free($3); |
| } |
| ; |
| |
| assigning: |
| '=' { yyvarnext = 1; } |
| ; |
| |
| rule: inrule |
| | outrule |
| ; |
| |
| inrule: |
| rulehead markin inopts rulemain ruletail intag ruletail2 |
| ; |
| |
| outrule: |
| rulehead markout outopts rulemain ruletail outtag ruletail2 |
| ; |
| |
| rulehead: |
| collection action |
| | insert collection action |
| ; |
| |
| markin: IPFY_IN { fr->fr_flags |= FR_INQUE; } |
| ; |
| |
| markout: |
| IPFY_OUT { fr->fr_flags |= FR_OUTQUE; } |
| ; |
| |
| rulemain: |
| ipfrule |
| | bpfrule |
| ; |
| |
| ipfrule: |
| tos ttl proto ip |
| ; |
| |
| bpfrule: |
| IPFY_BPFV4 '{' YY_STR '}' { dobpf(4, $3); free($3); } |
| | IPFY_BPFV6 '{' YY_STR '}' { dobpf(6, $3); free($3); } |
| ; |
| |
| ruletail: |
| with keep head group |
| ; |
| |
| ruletail2: |
| pps age new |
| ; |
| |
| intag: settagin matchtagin |
| ; |
| |
| outtag: settagout matchtagout |
| ; |
| |
| insert: |
| '@' YY_NUMBER { fr->fr_hits = (U_QUAD_T)$2; } |
| ; |
| |
| collection: |
| | YY_NUMBER { fr->fr_collect = $1; } |
| ; |
| |
| action: block |
| | IPFY_PASS { fr->fr_flags |= FR_PASS; } |
| | IPFY_DIVERT YY_NUMBER { fr->fr_flags |= FR_DIVERT; |
| fr->fr_arg = $2; } |
| | log |
| | IPFY_COUNT { fr->fr_flags |= FR_ACCOUNT; } |
| | auth |
| | IPFY_SKIP YY_NUMBER { fr->fr_flags |= FR_SKIP; |
| fr->fr_arg = $2; } |
| | IPFY_CALL func |
| | IPFY_CALL IPFY_NOW func { fr->fr_flags |= FR_CALLNOW; } |
| ; |
| |
| block: blocked |
| | blocked blockreturn |
| ; |
| |
| blocked: |
| IPFY_BLOCK { fr->fr_flags = FR_BLOCK; } |
| ; |
| blockreturn: |
| IPFY_RETICMP { fr->fr_flags |= FR_RETICMP; } |
| | IPFY_RETICMP returncode { fr->fr_flags |= FR_RETICMP; } |
| | IPFY_RETICMPASDST { fr->fr_flags |= FR_FAKEICMP; } |
| | IPFY_RETRST { fr->fr_flags |= FR_RETRST; } |
| ; |
| |
| log: IPFY_LOG { fr->fr_flags |= FR_LOG; } |
| | IPFY_LOG logoptions { fr->fr_flags |= FR_LOG; } |
| ; |
| |
| auth: IPFY_AUTH { fr->fr_flags |= FR_AUTH; } |
| | IPFY_AUTH IPFY_RETRST { fr->fr_flags |= (FR_AUTH|FR_RETRST);} |
| | IPFY_PREAUTH { fr->fr_flags |= FR_PREAUTH; } |
| ; |
| |
| func: YY_STR '/' YY_NUMBER { fr->fr_func = nametokva($1, |
| ipfioctl[IPL_LOGIPF]); |
| fr->fr_arg = $3; |
| free($1); } |
| ; |
| |
| inopts: |
| | inopts inopt |
| ; |
| |
| inopt: |
| logopt |
| | quick |
| | on |
| | dup |
| | froute |
| | replyto |
| ; |
| |
| outopts: |
| | outopts outopt |
| ; |
| |
| outopt: |
| logopt |
| | quick |
| | on |
| | dup |
| ; |
| |
| tos: | settos YY_NUMBER { DOALL(fr->fr_tos = $2; fr->fr_mtos = 0xff;) } |
| | settos YY_HEX { DOALL(fr->fr_tos = $2; fr->fr_mtos = 0xff;) } |
| | settos lstart toslist lend |
| ; |
| |
| settos: IPFY_TOS { setipftype(); } |
| ; |
| |
| toslist: |
| YY_NUMBER { DOALL(fr->fr_tos = $1; fr->fr_mtos = 0xff;) } |
| | YY_HEX { DOREM(fr->fr_tos = $1; fr->fr_mtos = 0xff;) } |
| | toslist lmore YY_NUMBER |
| { DOREM(fr->fr_tos = $3; fr->fr_mtos = 0xff;) } |
| | toslist lmore YY_HEX |
| { DOREM(fr->fr_tos = $3; fr->fr_mtos = 0xff;) } |
| ; |
| |
| ttl: | setttl YY_NUMBER |
| { DOALL(fr->fr_ttl = $2; fr->fr_mttl = 0xff;) } |
| | setttl lstart ttllist lend |
| ; |
| |
| lstart: '(' { newlist = 1; fr = frc; added = 0; } |
| ; |
| |
| lend: ')' { nrules += added; } |
| ; |
| |
| lmore: lanother { if (newlist == 1) { |
| newlist = 0; |
| } |
| fr = addrule(); |
| } |
| ; |
| |
| lanother: |
| | ',' |
| ; |
| |
| setttl: IPFY_TTL { setipftype(); } |
| ; |
| |
| ttllist: |
| YY_NUMBER { DOREM(fr->fr_ttl = $1; fr->fr_mttl = 0xff;) } |
| | ttllist lmore YY_NUMBER |
| { DOREM(fr->fr_ttl = $3; fr->fr_mttl = 0xff;) } |
| ; |
| |
| proto: | protox protocol |
| ; |
| |
| protox: IPFY_PROTO { setipftype(); fr = frc; } |
| ; |
| |
| ip: srcdst flags icmp |
| ; |
| |
| group: | IPFY_GROUP YY_STR { DOALL(strncpy(fr->fr_group, $2, \ |
| FR_GROUPLEN); \ |
| fillgroup(fr);); |
| free($2); } |
| | IPFY_GROUP YY_NUMBER { DOALL(sprintf(fr->fr_group, "%d", \ |
| $2); \ |
| fillgroup(fr);) } |
| ; |
| |
| head: | IPFY_HEAD YY_STR { DOALL(strncpy(fr->fr_grhead, $2, \ |
| FR_GROUPLEN);); |
| free($2); } |
| | IPFY_HEAD YY_NUMBER { DOALL(sprintf(fr->fr_grhead, "%d", \ |
| $2);) } |
| ; |
| |
| settagin: |
| | IPFY_SETTAG '(' taginlist ')' |
| |
| taginlist: |
| taginspec |
| | taginlist ',' taginspec |
| ; |
| |
| taginspec: |
| logtag |
| ; |
| |
| nattag: IPFY_NAT '=' YY_STR { DOALL(strncpy(fr->fr_nattag.ipt_tag,\ |
| $3, 16);); |
| free($3); } |
| | IPFY_NAT '=' YY_NUMBER { DOALL(sprintf(fr->fr_nattag.ipt_tag,\ |
| "%15d", $3);) } |
| ; |
| |
| logtag: IPFY_LOG '=' YY_NUMBER { DOALL(fr->fr_logtag = $3;) } |
| ; |
| |
| settagout: |
| | IPFY_SETTAG '(' tagoutlist ')' |
| |
| tagoutlist: |
| tagoutspec |
| | tagoutlist ',' tagoutspec |
| ; |
| |
| tagoutspec: |
| logtag |
| | nattag |
| ; |
| |
| matchtagin: |
| | IPFY_MATCHTAG '(' tagoutlist ')' |
| |
| matchtagout: |
| | IPFY_MATCHTAG '(' taginlist ')' |
| ; |
| |
| pps: | IPFY_PPS YY_NUMBER { DOALL(fr->fr_pps = $2;) } |
| ; |
| |
| new: | savegroup file restoregroup |
| ; |
| |
| savegroup: |
| '{' |
| ; |
| |
| restoregroup: |
| '}' |
| ; |
| |
| logopt: log |
| ; |
| |
| quick: |
| IPFY_QUICK { fr->fr_flags |= FR_QUICK; } |
| ; |
| |
| on: IPFY_ON onname |
| | IPFY_ON onname IPFY_INVIA vianame |
| | IPFY_ON onname IPFY_OUTVIA vianame |
| ; |
| |
| onname: name |
| { strncpy(fr->fr_ifnames[0], $1, sizeof(fr->fr_ifnames[0])); |
| free($1); |
| } |
| | name ',' name |
| { strncpy(fr->fr_ifnames[0], $1, sizeof(fr->fr_ifnames[0])); |
| free($1); |
| strncpy(fr->fr_ifnames[1], $3, sizeof(fr->fr_ifnames[1])); |
| free($3); |
| } |
| ; |
| |
| vianame: |
| name |
| { strncpy(fr->fr_ifnames[2], $1, sizeof(fr->fr_ifnames[2])); |
| free($1); |
| } |
| | name ',' name |
| { strncpy(fr->fr_ifnames[2], $1, sizeof(fr->fr_ifnames[2])); |
| free($1); |
| strncpy(fr->fr_ifnames[3], $3, sizeof(fr->fr_ifnames[3])); |
| free($3); |
| } |
| ; |
| |
| dup: IPFY_DUPTO name |
| { strncpy(fr->fr_dif.fd_ifname, $2, sizeof(fr->fr_dif.fd_ifname)); |
| free($2); |
| } |
| | IPFY_DUPTO name ':' hostname |
| { strncpy(fr->fr_dif.fd_ifname, $2, sizeof(fr->fr_dif.fd_ifname)); |
| fr->fr_dif.fd_ip = $4; |
| free($2); |
| } |
| ; |
| |
| froute: IPFY_FROUTE { fr->fr_flags |= FR_FASTROUTE; } |
| | routeto name |
| { strncpy(fr->fr_tif.fd_ifname, $2, sizeof(fr->fr_tif.fd_ifname)); |
| free($2); |
| } |
| | routeto name ':' hostname |
| { strncpy(fr->fr_tif.fd_ifname, $2, sizeof(fr->fr_tif.fd_ifname)); |
| fr->fr_tif.fd_ip = $4; |
| free($2); |
| } |
| ; |
| |
| routeto: |
| IPFY_TO |
| | IPFY_ROUTETO |
| ; |
| |
| replyto: |
| IPFY_REPLY_TO name |
| { strncpy(fr->fr_rif.fd_ifname, $2, sizeof(fr->fr_rif.fd_ifname)); |
| free($2); |
| } |
| | IPFY_REPLY_TO name ':' hostname |
| { strncpy(fr->fr_rif.fd_ifname, $2, sizeof(fr->fr_rif.fd_ifname)); |
| fr->fr_rif.fd_ip = $4; |
| free($2); |
| } |
| ; |
| |
| logoptions: |
| logoption |
| | logoptions logoption |
| ; |
| |
| logoption: |
| IPFY_BODY { fr->fr_flags |= FR_LOGBODY; } |
| | IPFY_FIRST { fr->fr_flags |= FR_LOGFIRST; } |
| | IPFY_ORBLOCK { fr->fr_flags |= FR_LOGORBLOCK; } |
| | level loglevel { unsetsyslog(); } |
| ; |
| |
| returncode: |
| '(' icmpcode ')' { fr->fr_icode = $2; } |
| ; |
| |
| srcdst: IPFY_ALL |
| | fromto |
| ; |
| |
| protocol: |
| IPFY_TCPUDP { DOREM(fr->fr_flx |= FI_TCPUDP; \ |
| fr->fr_mflx |= FI_TCPUDP;) } |
| | IPFY_TCP '/' IPFY_UDP { DOREM(fr->fr_flx |= FI_TCPUDP; \ |
| fr->fr_mflx |= FI_TCPUDP;) } |
| | IPFY_TCP { DOREM(fr->fr_proto = IPPROTO_TCP; \ |
| fr->fr_mproto = 0xff;) } |
| | IPFY_UDP { DOREM(fr->fr_proto = IPPROTO_UDP; \ |
| fr->fr_mproto = 0xff;) } |
| | IPFY_ICMP { DOREM(fr->fr_proto = IPPROTO_ICMP; \ |
| fr->fr_mproto = 0xff;) } |
| | IPFY_ESP { DOREM(fr->fr_proto = IPPROTO_ESP; \ |
| fr->fr_mproto = 0xff;) } |
| | IPFY_AH { DOREM(fr->fr_proto = IPPROTO_AH; \ |
| fr->fr_mproto = 0xff;) } |
| | YY_NUMBER { DOREM(fr->fr_proto = $1; \ |
| fr->fr_mproto = 0xff;) } |
| | YY_STR { DOREM(fr->fr_proto = getproto($1); \ |
| fr->fr_mproto = 0xff;) |
| free($1); |
| } |
| ; |
| |
| fromto: from srcobject to dstobject { yyexpectaddr = 0; } |
| | to dstobject { yyexpectaddr = 0; } |
| | from srcobject { yyexpectaddr = 0; } |
| ; |
| |
| from: IPFY_FROM { setipftype(); |
| if (fr == NULL) |
| fr = frc; |
| yyexpectaddr = 1; |
| resetaddr(); } |
| ; |
| |
| to: IPFY_TO { if (fr == NULL) |
| fr = frc; |
| yyexpectaddr = 1; |
| resetaddr(); } |
| ; |
| |
| with: | andwith withlist |
| ; |
| |
| andwith: |
| IPFY_WITH { nowith = 0; setipftype(); } |
| | IPFY_AND { nowith = 0; setipftype(); } |
| ; |
| |
| flags: | IPFY_FLAGS flagset |
| { DOALL(fr->fr_tcpf = $2; fr->fr_tcpfm = FR_TCPFMAX;) } |
| | IPFY_FLAGS flagset '/' flagset |
| { DOALL(fr->fr_tcpf = $2; fr->fr_tcpfm = $4;) } |
| | IPFY_FLAGS '/' flagset |
| { DOALL(fr->fr_tcpf = 0; fr->fr_tcpfm = $3;) } |
| | IPFY_FLAGS YY_NUMBER |
| { DOALL(fr->fr_tcpf = $2; fr->fr_tcpfm = FR_TCPFMAX;) } |
| | IPFY_FLAGS '/' YY_NUMBER |
| { DOALL(fr->fr_tcpf = 0; fr->fr_tcpfm = $3;) } |
| | IPFY_FLAGS YY_NUMBER '/' YY_NUMBER |
| { DOALL(fr->fr_tcpf = $2; fr->fr_tcpfm = $4;) } |
| | IPFY_FLAGS flagset '/' YY_NUMBER |
| { DOALL(fr->fr_tcpf = $2; fr->fr_tcpfm = $4;) } |
| | IPFY_FLAGS YY_NUMBER '/' flagset |
| { DOALL(fr->fr_tcpf = $2; fr->fr_tcpfm = $4;) } |
| ; |
| |
| flagset: |
| YY_STR { $$ = tcpflags($1); free($1); } |
| | YY_HEX { $$ = $1; } |
| ; |
| |
| srcobject: |
| srcaddr srcport |
| | '!' srcaddr srcport |
| { DOALL(fr->fr_flags |= FR_NOTSRCIP;) } |
| | fromport |
| ; |
| |
| srcaddr: |
| addr { DOREM(bcopy(&($1.a), &fr->fr_ip.fi_src, sizeof($1.a)); \ |
| bcopy(&($1.m), &fr->fr_mip.fi_src, sizeof($1.m)); \ |
| if (dynamic != -1) { \ |
| fr->fr_satype = ifpflag; \ |
| fr->fr_ipf->fri_sifpidx = dynamic; \ |
| } else if (pooled || hashed) \ |
| fr->fr_satype = FRI_LOOKUP;) |
| } |
| | lstart srcaddrlist lend |
| ; |
| |
| srcaddrlist: |
| addr { DOREM(bcopy(&($1.a), &fr->fr_ip.fi_src, sizeof($1.a)); \ |
| bcopy(&($1.m), &fr->fr_mip.fi_src, sizeof($1.m)); \ |
| if (dynamic != -1) { \ |
| fr->fr_satype = ifpflag; \ |
| fr->fr_ipf->fri_sifpidx = dynamic; \ |
| } else if (pooled || hashed) \ |
| fr->fr_satype = FRI_LOOKUP;) |
| } |
| | srcaddrlist lmore addr |
| { DOREM(bcopy(&($3.a), &fr->fr_ip.fi_src, sizeof($3.a)); \ |
| bcopy(&($3.m), &fr->fr_mip.fi_src, sizeof($3.m)); \ |
| if (dynamic != -1) { \ |
| fr->fr_satype = ifpflag; \ |
| fr->fr_ipf->fri_sifpidx = dynamic; \ |
| } else if (pooled || hashed) \ |
| fr->fr_satype = FRI_LOOKUP;) |
| } |
| ; |
| |
| srcport: |
| | portcomp |
| { DOALL(fr->fr_scmp = $1.pc; fr->fr_sport = $1.p1;) } |
| | portrange |
| { DOALL(fr->fr_scmp = $1.pc; fr->fr_sport = $1.p1; \ |
| fr->fr_stop = $1.p2;) } |
| | port '=' lstart srcportlist lend |
| ; |
| |
| fromport: |
| portcomp |
| { DOALL(fr->fr_scmp = $1.pc; fr->fr_sport = $1.p1;) } |
| | portrange |
| { DOALL(fr->fr_scmp = $1.pc; fr->fr_sport = $1.p1; \ |
| fr->fr_stop = $1.p2;) } |
| | port '=' lstart srcportlist lend |
| ; |
| |
| srcportlist: |
| portnum { DOREM(fr->fr_scmp = FR_EQUAL; fr->fr_sport = $1;) } |
| | srcportlist lmore portnum |
| { DOREM(fr->fr_scmp = FR_EQUAL; fr->fr_sport = $3;) } |
| ; |
| |
| dstobject: |
| toport |
| | dstaddr dstport |
| | '!' dstaddr dstport |
| { DOALL(fr->fr_flags |= FR_NOTDSTIP;) } |
| ; |
| |
| dstaddr: |
| addr { DOREM(bcopy(&($1.a), &fr->fr_ip.fi_dst, sizeof($1.a)); \ |
| bcopy(&($1.m), &fr->fr_mip.fi_dst, sizeof($1.m)); \ |
| if (dynamic != -1) { \ |
| fr->fr_datype = ifpflag; \ |
| fr->fr_ipf->fri_difpidx = dynamic; \ |
| } else if (pooled || hashed) \ |
| fr->fr_datype = FRI_LOOKUP;) |
| } |
| | lstart dstaddrlist lend |
| ; |
| |
| dstaddrlist: |
| addr { DOREM(bcopy(&($1.a), &fr->fr_ip.fi_dst, sizeof($1.a)); \ |
| bcopy(&($1.m), &fr->fr_mip.fi_dst, sizeof($1.m)); \ |
| if (dynamic != -1) { \ |
| fr->fr_datype = ifpflag; \ |
| fr->fr_ipf->fri_difpidx = dynamic; \ |
| } else if (pooled || hashed) \ |
| fr->fr_datype = FRI_LOOKUP;) |
| } |
| | dstaddrlist lmore addr |
| { DOREM(bcopy(&($3.a), &fr->fr_ip.fi_dst, sizeof($3.a)); \ |
| bcopy(&($3.m), &fr->fr_mip.fi_dst, sizeof($3.m)); \ |
| if (dynamic != -1) { \ |
| fr->fr_datype = ifpflag; \ |
| fr->fr_ipf->fri_difpidx = dynamic; \ |
| } else if (pooled || hashed) \ |
| fr->fr_datype = FRI_LOOKUP;) |
| } |
| ; |
| |
| |
| dstport: |
| | portcomp |
| { DOALL(fr->fr_dcmp = $1.pc; fr->fr_dport = $1.p1;) } |
| | portrange |
| { DOALL(fr->fr_dcmp = $1.pc; fr->fr_dport = $1.p1; \ |
| fr->fr_dtop = $1.p2;) } |
| | port '=' lstart dstportlist lend |
| ; |
| |
| toport: |
| portcomp |
| { DOALL(fr->fr_dcmp = $1.pc; fr->fr_dport = $1.p1;) } |
| | portrange |
| { DOALL(fr->fr_dcmp = $1.pc; fr->fr_dport = $1.p1; \ |
| fr->fr_dtop = $1.p2;) } |
| | port '=' lstart dstportlist lend |
| ; |
| |
| dstportlist: |
| portnum { DOREM(fr->fr_dcmp = FR_EQUAL; fr->fr_dport = $1;) } |
| | dstportlist lmore portnum |
| { DOREM(fr->fr_dcmp = FR_EQUAL; fr->fr_dport = $3;) } |
| ; |
| |
| addr: IPFY_ANY { bzero(&($$), sizeof($$)); } |
| | pool '/' YY_NUMBER { pooled = 1; |
| $$.a.iplookuptype = IPLT_POOL; |
| $$.a.iplookupnum = $3; } |
| | pool '=' '(' poollist ')' { pooled = 1; |
| $$.a.iplookuptype = IPLT_POOL; |
| $$.a.iplookupnum = makepool($4); } |
| | hash '/' YY_NUMBER { hashed = 1; |
| $$.a.iplookuptype = IPLT_HASH; |
| $$.a.iplookupnum = $3; } |
| | hash '=' '(' addrlist ')' { hashed = 1; |
| $$.a.iplookuptype = IPLT_HASH; |
| $$.a.iplookupnum = makehash($4); } |
| | hostname { $$.a.in4 = $1; |
| $$.m.in4_addr = 0xffffffff; } |
| | hostname maskspace ipv4mask { $$.a.in4 = $1; |
| $$.m.in4_addr = $3.s_addr; |
| $$.a.in4_addr &= $3.s_addr; } |
| | YY_IPV6 { bcopy(&$1, &$$.a, sizeof($$.a)); |
| fill6bits(128, (u_32_t *)&$$.m); } |
| | YY_IPV6 maskspace ipv6mask { bcopy(&$1, &$$.a, sizeof($$.a)); |
| bcopy(&$3, &$$.m, sizeof($$.m)); } |
| |
| maskspace: |
| '/' |
| | IPFY_MASK |
| ; |
| |
| ipv4mask: |
| ipv4 { $$ = $1; } |
| | YY_HEX { $$.s_addr = htonl($1); } |
| | YY_NUMBER { ntomask(4, $1, (u_32_t *)&$$); } |
| | IPFY_BROADCAST { if (ifpflag == FRI_DYNAMIC) { |
| $$.s_addr = 0; |
| ifpflag = FRI_BROADCAST; |
| } else |
| YYERROR; |
| } |
| | IPFY_NETWORK { if (ifpflag == FRI_DYNAMIC) { |
| $$.s_addr = 0; |
| ifpflag = FRI_NETWORK; |
| } else |
| YYERROR; |
| } |
| | IPFY_NETMASKED { if (ifpflag == FRI_DYNAMIC) { |
| $$.s_addr = 0; |
| ifpflag = FRI_NETMASKED; |
| } else |
| YYERROR; |
| } |
| | IPFY_PEER { if (ifpflag == FRI_DYNAMIC) { |
| $$.s_addr = 0; |
| ifpflag = FRI_PEERADDR; |
| } else |
| YYERROR; |
| } |
| ; |
| |
| ipv6mask: |
| YY_NUMBER { ntomask(6, $1, $$.i6); } |
| | IPFY_BROADCAST { if (ifpflag == FRI_DYNAMIC) { |
| bzero(&$$, sizeof($$)); |
| ifpflag = FRI_BROADCAST; |
| } else |
| YYERROR; |
| } |
| | IPFY_NETWORK { if (ifpflag == FRI_DYNAMIC) { |
| bzero(&$$, sizeof($$)); |
| ifpflag = FRI_BROADCAST; |
| } else |
| YYERROR; |
| } |
| | IPFY_NETMASKED { if (ifpflag == FRI_DYNAMIC) { |
| bzero(&$$, sizeof($$)); |
| ifpflag = FRI_BROADCAST; |
| } else |
| YYERROR; |
| } |
| | IPFY_PEER { if (ifpflag == FRI_DYNAMIC) { |
| bzero(&$$, sizeof($$)); |
| ifpflag = FRI_BROADCAST; |
| } else |
| YYERROR; |
| } |
| ; |
| |
| hostname: |
| ipv4 { $$ = $1; } |
| | YY_NUMBER { $$.s_addr = $1; } |
| | YY_HEX { $$.s_addr = $1; } |
| | YY_STR { $$.s_addr = lookuphost($1); |
| free($1); |
| } |
| ; |
| |
| addrlist: |
| addr { $$ = newalist(NULL); |
| bcopy(&($1.a), &($$->al_i6addr), sizeof($1.a)); |
| bcopy(&($1.m), &($$->al_i6mask), sizeof($1.m)); } |
| | addrlist ',' addr |
| { $$ = newalist($1); |
| bcopy(&($3.a), &($$->al_i6addr), sizeof($3.a)); |
| bcopy(&($3.m), &($$->al_i6mask), sizeof($3.m)); } |
| ; |
| |
| pool: IPFY_POOL { yyexpectaddr = 0; } |
| ; |
| |
| hash: IPFY_HASH { yyexpectaddr = 0; } |
| ; |
| |
| poollist: |
| addr { $$ = newalist(NULL); |
| bcopy(&($1.a), &($$->al_i6addr), sizeof($1.a)); |
| bcopy(&($1.m), &($$->al_i6mask), sizeof($1.m)); } |
| | '!' addr { $$ = newalist(NULL); |
| $$->al_not = 1; |
| bcopy(&($2.a), &($$->al_i6addr), sizeof($2.a)); |
| bcopy(&($2.m), &($$->al_i6mask), sizeof($2.m)); } |
| | addrlist ',' addr |
| { $$ = newalist($1); |
| bcopy(&($3.a), &($$->al_i6addr), sizeof($3.a)); |
| bcopy(&($3.m), &($$->al_i6mask), sizeof($3.m)); } |
| | addrlist ',' '!' addr |
| { $$ = newalist($1); |
| $$->al_not = 1; |
| bcopy(&($4.a), &($$->al_i6addr), sizeof($4.a)); |
| bcopy(&($4.m), &($$->al_i6mask), sizeof($4.m)); } |
| ; |
| |
| port: IPFY_PORT { yyexpectaddr = 0; } |
| ; |
| |
| portcomp: |
| port compare portnum { $$.pc = $2; $$.p1 = $3; } |
| ; |
| |
| portrange: |
| port portnum range portnum { $$.p1 = $2; $$.pc = $3; $$.p2 = $4; } |
| ; |
| |
| icmp: | itype icode |
| ; |
| |
| itype: IPFY_ICMPTYPE icmptype |
| { DOALL(fr->fr_icmp = htons($2 << 8); fr->fr_icmpm = htons(0xff00);) } |
| | IPFY_ICMPTYPE lstart typelist lend |
| ; |
| |
| icode: | IPFY_ICMPCODE icmpcode |
| { DOALL(fr->fr_icmp |= htons($2); fr->fr_icmpm |= htons(0xff);) } |
| | IPFY_ICMPCODE lstart codelist lend |
| ; |
| |
| typelist: |
| icmptype |
| { DOREM(fr->fr_icmp = htons($1 << 8); fr->fr_icmpm = htons(0xff00);) } |
| | typelist lmore icmptype |
| { DOREM(fr->fr_icmp = htons($3 << 8); fr->fr_icmpm = htons(0xff00);) } |
| ; |
| |
| codelist: |
| icmpcode |
| { DOREM(fr->fr_icmp |= htons($1); fr->fr_icmpm |= htons(0xff);) } |
| | codelist lmore icmpcode |
| { DOREM(fr->fr_icmp |= htons($3); fr->fr_icmpm |= htons(0xff);) } |
| ; |
| |
| age: | IPFY_AGE YY_NUMBER { DOALL(fr->fr_age[0] = $2; \ |
| fr->fr_age[1] = $2;) } |
| | IPFY_AGE YY_NUMBER '/' YY_NUMBER |
| { DOALL(fr->fr_age[0] = $2; \ |
| fr->fr_age[1] = $4;) } |
| ; |
| |
| keep: | IPFY_KEEP keepstate |
| | IPFY_KEEP keepfrag |
| | IPFY_KEEP keepstate IPFY_KEEP keepfrag |
| ; |
| |
| keepstate: |
| IPFY_STATE stateoptlist { DOALL(fr->fr_flags |= FR_KEEPSTATE;)} |
| ; |
| |
| keepfrag: |
| IPFY_FRAGS fragoptlist { DOALL(fr->fr_flags |= FR_KEEPFRAG;) } |
| ; |
| |
| fragoptlist: |
| | '(' fragopts ')' |
| ; |
| |
| fragopts: |
| fragopt lanother fragopts |
| | fragopt |
| ; |
| |
| fragopt: |
| IPFY_STRICT { DOALL(fr->fr_flags |= FR_FRSTRICT;) } |
| ; |
| |
| stateoptlist: |
| | '(' stateopts ')' |
| ; |
| |
| stateopts: |
| stateopt lanother stateopts |
| | stateopt |
| ; |
| |
| stateopt: |
| IPFY_LIMIT YY_NUMBER { DOALL(fr->fr_statemax = $2;) } |
| | IPFY_STRICT { DOALL(if (fr->fr_proto != IPPROTO_TCP) { \ |
| YYERROR; \ |
| } else \ |
| fr->fr_flags |= FR_STSTRICT;) |
| } |
| | IPFY_NEWISN { DOALL(if (fr->fr_proto != IPPROTO_TCP) { \ |
| YYERROR; \ |
| } else \ |
| fr->fr_flags |= FR_NEWISN;) |
| } |
| | IPFY_NOICMPERR { DOALL(fr->fr_flags |= FR_NOICMPERR;) } |
| ; |
| |
| portnum: |
| servicename { $$ = ntohs(getport($1)); |
| free($1); |
| } |
| | YY_NUMBER { $$ = $1; } |
| ; |
| |
| withlist: |
| withopt |
| | withlist withopt |
| | withlist ',' withopt |
| ; |
| |
| withopt: |
| opttype { DOALL(fr->fr_flx |= $1; fr->fr_mflx |= $1;) } |
| | notwith opttype |
| { DOALL(fr->fr_mflx |= $2;) } |
| | IPFY_OPT ipopts |
| | notwith IPFY_OPT ipopts |
| | startv6hdrs ipv6hdrs |
| ; |
| |
| startv6hdrs: |
| IPF6_V6HDRS { if (use_inet6 == 0) |
| yyerror("only available with IPv6"); |
| } |
| ; |
| |
| notwith: |
| IPFY_NOT { nowith = 1; } |
| | IPFY_NO { nowith = 1; } |
| ; |
| |
| opttype: |
| IPFY_IPOPTS { $$ = FI_OPTIONS; } |
| | IPFY_SHORT { $$ = FI_SHORT; } |
| | IPFY_NAT { $$ = FI_NATED; } |
| | IPFY_BAD { $$ = FI_BAD; } |
| | IPFY_BADNAT { $$ = FI_BADNAT; } |
| | IPFY_BADSRC { $$ = FI_BADSRC; } |
| | IPFY_LOWTTL { $$ = FI_LOWTTL; } |
| | IPFY_FRAG { $$ = FI_FRAG; } |
| | IPFY_MBCAST { $$ = FI_MBCAST; } |
| | IPFY_MULTICAST { $$ = FI_MULTICAST; } |
| | IPFY_BROADCAST { $$ = FI_BROADCAST; } |
| | IPFY_STATE { $$ = FI_STATE; } |
| | IPFY_OOW { $$ = FI_OOW; } |
| ; |
| |
| ipopts: optlist { DOALL(fr->fr_mip.fi_optmsk |= $1; |
| if (!nowith) |
| fr->fr_ip.fi_optmsk |= $1;) |
| } |
| ; |
| |
| optlist: |
| opt { $$ |= $1; } |
| | optlist ',' opt { $$ |= $1 | $3; } |
| ; |
| |
| ipv6hdrs: |
| ipv6hdrlist { DOALL(fr->fr_mip.fi_optmsk |= $1; |
| if (!nowith) |
| fr->fr_ip.fi_optmsk |= $1;) |
| } |
| ; |
| |
| ipv6hdrlist: |
| ipv6hdr { $$ |= $1; } |
| | ipv6hdrlist ',' ipv6hdr { $$ |= $1 | $3; } |
| ; |
| |
| secname: |
| seclevel { $$ |= $1; } |
| | secname ',' seclevel { $$ |= $1 | $3; } |
| ; |
| |
| seclevel: |
| IPFY_SEC_UNC { $$ = secbit(IPSO_CLASS_UNCL); } |
| | IPFY_SEC_CONF { $$ = secbit(IPSO_CLASS_CONF); } |
| | IPFY_SEC_RSV1 { $$ = secbit(IPSO_CLASS_RES1); } |
| | IPFY_SEC_RSV2 { $$ = secbit(IPSO_CLASS_RES2); } |
| | IPFY_SEC_RSV3 { $$ = secbit(IPSO_CLASS_RES3); } |
| | IPFY_SEC_RSV4 { $$ = secbit(IPSO_CLASS_RES4); } |
| | IPFY_SEC_SEC { $$ = secbit(IPSO_CLASS_SECR); } |
| | IPFY_SEC_TS { $$ = secbit(IPSO_CLASS_TOPS); } |
| ; |
| |
| icmptype: |
| YY_NUMBER { $$ = $1; } |
| | IPFY_ICMPT_UNR { $$ = ICMP_UNREACH; } |
| | IPFY_ICMPT_ECHO { $$ = ICMP_ECHO; } |
| | IPFY_ICMPT_ECHOR { $$ = ICMP_ECHOREPLY; } |
| | IPFY_ICMPT_SQUENCH { $$ = ICMP_SOURCEQUENCH; } |
| | IPFY_ICMPT_REDIR { $$ = ICMP_REDIRECT; } |
| | IPFY_ICMPT_TIMEX { $$ = ICMP_TIMXCEED; } |
| | IPFY_ICMPT_PARAMP { $$ = ICMP_PARAMPROB; } |
| | IPFY_ICMPT_TIMEST { $$ = ICMP_TSTAMP; } |
| | IPFY_ICMPT_TIMESTREP { $$ = ICMP_TSTAMPREPLY; } |
| | IPFY_ICMPT_INFOREQ { $$ = ICMP_IREQ; } |
| | IPFY_ICMPT_INFOREP { $$ = ICMP_IREQREPLY; } |
| | IPFY_ICMPT_MASKREQ { $$ = ICMP_MASKREQ; } |
| | IPFY_ICMPT_MASKREP { $$ = ICMP_MASKREPLY; } |
| | IPFY_ICMPT_ROUTERAD { $$ = ICMP_ROUTERADVERT; } |
| | IPFY_ICMPT_ROUTERSOL { $$ = ICMP_ROUTERSOLICIT; } |
| ; |
| |
| icmpcode: |
| YY_NUMBER { $$ = $1; } |
| | IPFY_ICMPC_NETUNR { $$ = ICMP_UNREACH_NET; } |
| | IPFY_ICMPC_HSTUNR { $$ = ICMP_UNREACH_HOST; } |
| | IPFY_ICMPC_PROUNR { $$ = ICMP_UNREACH_PROTOCOL; } |
| | IPFY_ICMPC_PORUNR { $$ = ICMP_UNREACH_PORT; } |
| | IPFY_ICMPC_NEEDF { $$ = ICMP_UNREACH_NEEDFRAG; } |
| | IPFY_ICMPC_SRCFAIL { $$ = ICMP_UNREACH_SRCFAIL; } |
| | IPFY_ICMPC_NETUNK { $$ = ICMP_UNREACH_NET_UNKNOWN; } |
| | IPFY_ICMPC_HSTUNK { $$ = ICMP_UNREACH_HOST_UNKNOWN; } |
| | IPFY_ICMPC_ISOLATE { $$ = ICMP_UNREACH_ISOLATED; } |
| | IPFY_ICMPC_NETPRO { $$ = ICMP_UNREACH_NET_PROHIB; } |
| | IPFY_ICMPC_HSTPRO { $$ = ICMP_UNREACH_HOST_PROHIB; } |
| | IPFY_ICMPC_NETTOS { $$ = ICMP_UNREACH_TOSNET; } |
| | IPFY_ICMPC_HSTTOS { $$ = ICMP_UNREACH_TOSHOST; } |
| | IPFY_ICMPC_FLTPRO { $$ = ICMP_UNREACH_ADMIN_PROHIBIT; } |
| | IPFY_ICMPC_HSTPRE { $$ = 14; } |
| | IPFY_ICMPC_CUTPRE { $$ = 15; } |
| ; |
| |
| opt: |
| IPFY_IPOPT_NOP { $$ = getoptbyvalue(IPOPT_NOP); } |
| | IPFY_IPOPT_RR { $$ = getoptbyvalue(IPOPT_RR); } |
| | IPFY_IPOPT_ZSU { $$ = getoptbyvalue(IPOPT_ZSU); } |
| | IPFY_IPOPT_MTUP { $$ = getoptbyvalue(IPOPT_MTUP); } |
| | IPFY_IPOPT_MTUR { $$ = getoptbyvalue(IPOPT_MTUR); } |
| | IPFY_IPOPT_ENCODE { $$ = getoptbyvalue(IPOPT_ENCODE); } |
| | IPFY_IPOPT_TS { $$ = getoptbyvalue(IPOPT_TS); } |
| | IPFY_IPOPT_TR { $$ = getoptbyvalue(IPOPT_TR); } |
| | IPFY_IPOPT_SEC { $$ = getoptbyvalue(IPOPT_SECURITY); } |
| | IPFY_IPOPT_LSRR { $$ = getoptbyvalue(IPOPT_LSRR); } |
| | IPFY_IPOPT_ESEC { $$ = getoptbyvalue(IPOPT_E_SEC); } |
| | IPFY_IPOPT_CIPSO { $$ = getoptbyvalue(IPOPT_CIPSO); } |
| | IPFY_IPOPT_SATID { $$ = getoptbyvalue(IPOPT_SATID); } |
| | IPFY_IPOPT_SSRR { $$ = getoptbyvalue(IPOPT_SSRR); } |
| | IPFY_IPOPT_ADDEXT { $$ = getoptbyvalue(IPOPT_ADDEXT); } |
| | IPFY_IPOPT_VISA { $$ = getoptbyvalue(IPOPT_VISA); } |
| | IPFY_IPOPT_IMITD { $$ = getoptbyvalue(IPOPT_IMITD); } |
| | IPFY_IPOPT_EIP { $$ = getoptbyvalue(IPOPT_EIP); } |
| | IPFY_IPOPT_FINN { $$ = getoptbyvalue(IPOPT_FINN); } |
| | IPFY_IPOPT_DPS { $$ = getoptbyvalue(IPOPT_DPS); } |
| | IPFY_IPOPT_SDB { $$ = getoptbyvalue(IPOPT_SDB); } |
| | IPFY_IPOPT_NSAPA { $$ = getoptbyvalue(IPOPT_NSAPA); } |
| | IPFY_IPOPT_RTRALRT { $$ = getoptbyvalue(IPOPT_RTRALRT); } |
| | IPFY_IPOPT_UMP { $$ = getoptbyvalue(IPOPT_UMP); } |
| | IPFY_SECCLASS secname |
| { DOALL(fr->fr_mip.fi_secmsk |= $2; |
| if (!nowith) |
| fr->fr_ip.fi_secmsk |= $2;) |
| $$ = 0; |
| } |
| ; |
| |
| ipv6hdr: |
| IPFY_AH { $$ = getv6optbyvalue(IPPROTO_AH); } |
| | IPFY_IPV6OPT_DSTOPTS { $$ = getv6optbyvalue(IPPROTO_DSTOPTS); } |
| | IPFY_ESP { $$ = getv6optbyvalue(IPPROTO_ESP); } |
| | IPFY_IPV6OPT_HOPOPTS { $$ = getv6optbyvalue(IPPROTO_HOPOPTS); } |
| | IPFY_IPV6OPT_IPV6 { $$ = getv6optbyvalue(IPPROTO_IPV6); } |
| | IPFY_IPV6OPT_NONE { $$ = getv6optbyvalue(IPPROTO_NONE); } |
| | IPFY_IPV6OPT_ROUTING { $$ = getv6optbyvalue(IPPROTO_ROUTING); } |
| | IPFY_FRAG { $$ = getv6optbyvalue(IPPROTO_FRAGMENT); } |
| ; |
| |
| level: IPFY_LEVEL { setsyslog(); } |
| ; |
| |
| loglevel: |
| priority { fr->fr_loglevel = LOG_LOCAL0|$1; } |
| | facility '.' priority { fr->fr_loglevel = $1 | $3; } |
| ; |
| |
| facility: |
| IPFY_FAC_KERN { $$ = LOG_KERN; } |
| | IPFY_FAC_USER { $$ = LOG_USER; } |
| | IPFY_FAC_MAIL { $$ = LOG_MAIL; } |
| | IPFY_FAC_DAEMON { $$ = LOG_DAEMON; } |
| | IPFY_FAC_AUTH { $$ = LOG_AUTH; } |
| | IPFY_FAC_SYSLOG { $$ = LOG_SYSLOG; } |
| | IPFY_FAC_LPR { $$ = LOG_LPR; } |
| | IPFY_FAC_NEWS { $$ = LOG_NEWS; } |
| | IPFY_FAC_UUCP { $$ = LOG_UUCP; } |
| | IPFY_FAC_CRON { $$ = LOG_CRON; } |
| | IPFY_FAC_FTP { $$ = LOG_FTP; } |
| | IPFY_FAC_AUTHPRIV { $$ = LOG_AUTHPRIV; } |
| | IPFY_FAC_AUDIT { $$ = LOG_AUDIT; } |
| | IPFY_FAC_LFMT { $$ = LOG_LFMT; } |
| | IPFY_FAC_LOCAL0 { $$ = LOG_LOCAL0; } |
| | IPFY_FAC_LOCAL1 { $$ = LOG_LOCAL1; } |
| | IPFY_FAC_LOCAL2 { $$ = LOG_LOCAL2; } |
| | IPFY_FAC_LOCAL3 { $$ = LOG_LOCAL3; } |
| | IPFY_FAC_LOCAL4 { $$ = LOG_LOCAL4; } |
| | IPFY_FAC_LOCAL5 { $$ = LOG_LOCAL5; } |
| | IPFY_FAC_LOCAL6 { $$ = LOG_LOCAL6; } |
| | IPFY_FAC_LOCAL7 { $$ = LOG_LOCAL7; } |
| | IPFY_FAC_SECURITY { $$ = LOG_SECURITY; } |
| ; |
| |
| priority: |
| IPFY_PRI_EMERG { $$ = LOG_EMERG; } |
| | IPFY_PRI_ALERT { $$ = LOG_ALERT; } |
| | IPFY_PRI_CRIT { $$ = LOG_CRIT; } |
| | IPFY_PRI_ERR { $$ = LOG_ERR; } |
| | IPFY_PRI_WARN { $$ = LOG_WARNING; } |
| | IPFY_PRI_NOTICE { $$ = LOG_NOTICE; } |
| | IPFY_PRI_INFO { $$ = LOG_INFO; } |
| | IPFY_PRI_DEBUG { $$ = LOG_DEBUG; } |
| ; |
| |
| compare: |
| '=' { $$ = FR_EQUAL; } |
| | YY_CMP_EQ { $$ = FR_EQUAL; } |
| | YY_CMP_NE { $$ = FR_NEQUAL; } |
| | YY_CMP_LT { $$ = FR_LESST; } |
| | YY_CMP_LE { $$ = FR_LESSTE; } |
| | YY_CMP_GT { $$ = FR_GREATERT; } |
| | YY_CMP_GE { $$ = FR_GREATERTE; } |
| ; |
| |
| range: YY_RANGE_IN { $$ = FR_INRANGE; } |
| | YY_RANGE_OUT { $$ = FR_OUTRANGE; } |
| | ':' { $$ = FR_INCRANGE; } |
| ; |
| |
| servicename: |
| YY_STR { $$ = $1; } |
| ; |
| |
| name: YY_STR { $$ = $1; } |
| ; |
| |
| ipv4: YY_NUMBER '.' YY_NUMBER '.' YY_NUMBER '.' YY_NUMBER |
| { if ($1 > 255 || $3 > 255 || $5 > 255 || $7 > 255) { |
| yyerror("Invalid octet string for IP address"); |
| return 0; |
| } |
| $$.s_addr = ($1 << 24) | ($3 << 16) | ($5 << 8) | $7; |
| $$.s_addr = htonl($$.s_addr); |
| } |
| ; |
| %% |
| |
| |
| static struct wordtab ipfwords[] = { |
| { "addext", IPFY_IPOPT_ADDEXT }, |
| { "age", IPFY_AGE }, |
| { "ah", IPFY_AH }, |
| { "all", IPFY_ALL }, |
| { "and", IPFY_AND }, |
| { "any", IPFY_ANY }, |
| { "auth", IPFY_AUTH }, |
| { "bad", IPFY_BAD }, |
| { "bad-nat", IPFY_BADNAT }, |
| { "bad-src", IPFY_BADSRC }, |
| { "bcast", IPFY_BROADCAST }, |
| { "block", IPFY_BLOCK }, |
| { "body", IPFY_BODY }, |
| { "bpf-v4", IPFY_BPFV4 }, |
| #ifdef USE_INET6 |
| { "bpf-v6", IPFY_BPFV6 }, |
| #endif |
| { "broadcast", IPFY_BROADCAST }, |
| { "call", IPFY_CALL }, |
| { "cipso", IPFY_IPOPT_CIPSO }, |
| { "code", IPFY_ICMPCODE }, |
| { "confid", IPFY_SEC_CONF }, |
| { "count", IPFY_COUNT }, |
| { "cutoff-preced", IPFY_ICMPC_CUTPRE }, |
| { "divert", IPFY_DIVERT }, |
| { "dps", IPFY_IPOPT_DPS }, |
| { "dstopts", IPFY_IPV6OPT_DSTOPTS }, |
| { "dup-to", IPFY_DUPTO }, |
| { "e-sec", IPFY_IPOPT_ESEC }, |
| { "echo", IPFY_ICMPT_ECHO }, |
| { "echorep", IPFY_ICMPT_ECHOR }, |
| { "eip", IPFY_IPOPT_EIP }, |
| { "encode", IPFY_IPOPT_ENCODE }, |
| { "eq", YY_CMP_EQ }, |
| { "esp", IPFY_ESP }, |
| { "fastroute", IPFY_FROUTE }, |
| { "filter-prohib", IPFY_ICMPC_FLTPRO }, |
| { "first", IPFY_FIRST }, |
| { "finn", IPFY_IPOPT_FINN }, |
| { "frag", IPFY_FRAG }, |
| { "flags", IPFY_FLAGS }, |
| { "frags", IPFY_FRAGS }, |
| { "from", IPFY_FROM }, |
| { "ge", YY_CMP_GE }, |
| { "group", IPFY_GROUP }, |
| { "gt", YY_CMP_GT }, |
| { "hash", IPFY_HASH }, |
| { "head", IPFY_HEAD }, |
| { "hopopts", IPFY_IPV6OPT_HOPOPTS }, |
| { "host-preced", IPFY_ICMPC_HSTPRE }, |
| { "host-prohib", IPFY_ICMPC_HSTPRO }, |
| { "host-tos", IPFY_ICMPC_HSTTOS }, |
| { "host-unk", IPFY_ICMPC_HSTUNK }, |
| { "host-unr", IPFY_ICMPC_HSTUNR }, |
| { "icmp", IPFY_ICMP }, |
| { "icmp-type", IPFY_ICMPTYPE }, |
| { "imitd", IPFY_IPOPT_IMITD }, |
| { "in", IPFY_IN }, |
| { "in-via", IPFY_INVIA }, |
| { "inforeq", IPFY_ICMPT_INFOREQ }, |
| { "inforep", IPFY_ICMPT_INFOREP }, |
| { "ipopt", IPFY_IPOPTS }, |
| { "ipopts", IPFY_IPOPTS }, |
| { "ipv6", IPFY_IPV6OPT_IPV6 }, |
| { "isolate", IPFY_ICMPC_ISOLATE }, |
| { "keep", IPFY_KEEP }, |
| { "le", YY_CMP_LE }, |
| { "level", IPFY_LEVEL }, |
| { "limit", IPFY_LIMIT }, |
| { "log", IPFY_LOG }, |
| { "lowttl", IPFY_LOWTTL }, |
| { "lsrr", IPFY_IPOPT_LSRR }, |
| { "lt", YY_CMP_LT }, |
| { "mask", IPFY_MASK }, |
| { "maskrep", IPFY_ICMPT_MASKREP }, |
| { "maskreq", IPFY_ICMPT_MASKREQ }, |
| { "match-tag", IPFY_MATCHTAG }, |
| { "mbcast", IPFY_MBCAST }, |
| { "mtup", IPFY_IPOPT_MTUP }, |
| { "mtur", IPFY_IPOPT_MTUR }, |
| { "multicast", IPFY_MULTICAST }, |
| { "nat", IPFY_NAT }, |
| { "ne", YY_CMP_NE }, |
| { "needfrag", IPFY_ICMPC_NEEDF }, |
| { "net", IPFY_NETWORK }, |
| { "net-prohib", IPFY_ICMPC_NETPRO }, |
| { "net-tos", IPFY_ICMPC_NETTOS }, |
| { "net-unk", IPFY_ICMPC_NETUNK }, |
| { "net-unr", IPFY_ICMPC_NETUNR }, |
| { "netmasked", IPFY_NETMASKED }, |
| { "network", IPFY_NETWORK }, |
| { "newisn", IPFY_NEWISN }, |
| { "no", IPFY_NO }, |
| { "no-icmp-err", IPFY_NOICMPERR }, |
| { "none", IPFY_IPV6OPT_NONE }, |
| { "nop", IPFY_IPOPT_NOP }, |
| { "now", IPFY_NOW }, |
| { "not", IPFY_NOT }, |
| { "nsapa", IPFY_IPOPT_NSAPA }, |
| { "oow", IPFY_OOW }, |
| { "on", IPFY_ON }, |
| { "opt", IPFY_OPT }, |
| { "or-block", IPFY_ORBLOCK }, |
| { "out", IPFY_OUT }, |
| { "out-via", IPFY_OUTVIA }, |
| { "paramprob", IPFY_ICMPT_PARAMP }, |
| { "pass", IPFY_PASS }, |
| { "peer", IPFY_PEER }, |
| { "pool", IPFY_POOL }, |
| { "port", IPFY_PORT }, |
| { "port-unr", IPFY_ICMPC_PORUNR }, |
| { "pps", IPFY_PPS }, |
| { "preauth", IPFY_PREAUTH }, |
| { "proto", IPFY_PROTO }, |
| { "proto-unr", IPFY_ICMPC_PROUNR }, |
| { "quick", IPFY_QUICK }, |
| { "redir", IPFY_ICMPT_REDIR }, |
| { "reply-to", IPFY_REPLY_TO }, |
| { "reserv-1", IPFY_SEC_RSV1 }, |
| { "reserv-2", IPFY_SEC_RSV2 }, |
| { "reserv-3", IPFY_SEC_RSV3 }, |
| { "reserv-4", IPFY_SEC_RSV4 }, |
| { "return-icmp", IPFY_RETICMP }, |
| { "return-icmp-as-dest", IPFY_RETICMPASDST }, |
| { "return-rst", IPFY_RETRST }, |
| { "route-to", IPFY_ROUTETO }, |
| { "routerad", IPFY_ICMPT_ROUTERAD }, |
| { "routersol", IPFY_ICMPT_ROUTERSOL }, |
| { "routing", IPFY_IPV6OPT_ROUTING }, |
| { "rr", IPFY_IPOPT_RR }, |
| { "rtralrt", IPFY_IPOPT_RTRALRT }, |
| { "satid", IPFY_IPOPT_SATID }, |
| { "sdb", IPFY_IPOPT_SDB }, |
| { "sec", IPFY_IPOPT_SEC }, |
| { "sec-class", IPFY_SECCLASS }, |
| { "secret", IPFY_SEC_SEC }, |
| { "set-tag", IPFY_SETTAG }, |
| { "skip", IPFY_SKIP }, |
| { "squench", IPFY_ICMPT_SQUENCH }, |
| { "short", IPFY_SHORT }, |
| { "srcfail", IPFY_ICMPC_SRCFAIL }, |
| { "ssrr", IPFY_IPOPT_SSRR }, |
| { "state", IPFY_STATE }, |
| { "strict", IPFY_STRICT }, |
| { "tcp", IPFY_TCP }, |
| { "tcp-udp", IPFY_TCPUDP }, |
| { "timest", IPFY_ICMPT_TIMEST }, |
| { "timestrep", IPFY_ICMPT_TIMESTREP }, |
| { "timex", IPFY_ICMPT_TIMEX }, |
| { "tos", IPFY_TOS }, |
| { "topsecret", IPFY_SEC_TS }, |
| { "to", IPFY_TO }, |
| { "tr", IPFY_IPOPT_TR }, |
| { "ts", IPFY_IPOPT_TS }, |
| { "ttl", IPFY_TTL }, |
| { "udp", IPFY_UDP }, |
| { "ump", IPFY_IPOPT_UMP }, |
| { "unclass", IPFY_SEC_UNC }, |
| { "unreach", IPFY_ICMPT_UNR }, |
| { "v6hdrs", IPF6_V6HDRS }, |
| { "visa", IPFY_IPOPT_VISA }, |
| { "with", IPFY_WITH }, |
| { "zsu", IPFY_IPOPT_ZSU }, |
| { NULL, 0 } |
| }; |
| |
| |
| static struct wordtab logwords[] = { |
| { "kern", IPFY_FAC_KERN }, |
| { "user", IPFY_FAC_USER }, |
| { "mail", IPFY_FAC_MAIL }, |
| { "daemon", IPFY_FAC_DAEMON }, |
| { "auth", IPFY_FAC_AUTH }, |
| { "syslog", IPFY_FAC_SYSLOG }, |
| { "lpr", IPFY_FAC_LPR }, |
| { "news", IPFY_FAC_NEWS }, |
| { "uucp", IPFY_FAC_UUCP }, |
| { "cron", IPFY_FAC_CRON }, |
| { "ftp", IPFY_FAC_FTP }, |
| { "authpriv", IPFY_FAC_AUTHPRIV }, |
| { "audit", IPFY_FAC_AUDIT }, |
| { "logalert", IPFY_FAC_LFMT }, |
| { "console", IPFY_FAC_CONSOLE }, |
| { "security", IPFY_FAC_SECURITY }, |
| { "local0", IPFY_FAC_LOCAL0 }, |
| { "local1", IPFY_FAC_LOCAL1 }, |
| { "local2", IPFY_FAC_LOCAL2 }, |
| { "local3", IPFY_FAC_LOCAL3 }, |
| { "local4", IPFY_FAC_LOCAL4 }, |
| { "local5", IPFY_FAC_LOCAL5 }, |
| { "local6", IPFY_FAC_LOCAL6 }, |
| { "local7", IPFY_FAC_LOCAL7 }, |
| { "emerg", IPFY_PRI_EMERG }, |
| { "alert", IPFY_PRI_ALERT }, |
| { "crit", IPFY_PRI_CRIT }, |
| { "err", IPFY_PRI_ERR }, |
| { "warn", IPFY_PRI_WARN }, |
| { "notice", IPFY_PRI_NOTICE }, |
| { "info", IPFY_PRI_INFO }, |
| { "debug", IPFY_PRI_DEBUG }, |
| { NULL, 0 }, |
| }; |
| |
| |
| |
| |
| int ipf_parsefile(fd, addfunc, iocfuncs, filename) |
| int fd; |
| addfunc_t addfunc; |
| ioctlfunc_t *iocfuncs; |
| char *filename; |
| { |
| FILE *fp = NULL; |
| char *s; |
| |
| yylineNum = 1; |
| yysettab(ipfwords); |
| |
| s = getenv("YYDEBUG"); |
| if (s != NULL) |
| yydebug = atoi(s); |
| else |
| yydebug = 0; |
| |
| if (strcmp(filename, "-")) { |
| fp = fopen(filename, "r"); |
| if (fp == NULL) { |
| fprintf(stderr, "fopen(%s) failed: %s\n", filename, |
| STRERROR(errno)); |
| return -1; |
| } |
| } else |
| fp = stdin; |
| |
| while (ipf_parsesome(fd, addfunc, iocfuncs, fp) == 1) |
| ; |
| if (fp != NULL) |
| fclose(fp); |
| return 0; |
| } |
| |
| |
| int ipf_parsesome(fd, addfunc, iocfuncs, fp) |
| int fd; |
| addfunc_t addfunc; |
| ioctlfunc_t *iocfuncs; |
| FILE *fp; |
| { |
| char *s; |
| int i; |
| |
| ipffd = fd; |
| for (i = 0; i <= IPL_LOGMAX; i++) |
| ipfioctl[i] = iocfuncs[i]; |
| ipfaddfunc = addfunc; |
| |
| if (feof(fp)) |
| return 0; |
| i = fgetc(fp); |
| if (i == EOF) |
| return 0; |
| if (ungetc(i, fp) == 0) |
| return 0; |
| if (feof(fp)) |
| return 0; |
| s = getenv("YYDEBUG"); |
| if (s != NULL) |
| yydebug = atoi(s); |
| else |
| yydebug = 0; |
| |
| yyin = fp; |
| yyparse(); |
| return 1; |
| } |
| |
| |
| static void newrule() |
| { |
| frentry_t *frn; |
| |
| frn = (frentry_t *)calloc(1, sizeof(frentry_t)); |
| for (fr = frtop; fr != NULL && fr->fr_next != NULL; fr = fr->fr_next) |
| ; |
| if (fr != NULL) |
| fr->fr_next = frn; |
| if (frtop == NULL) |
| frtop = frn; |
| fr = frn; |
| frc = frn; |
| fr->fr_loglevel = 0xffff; |
| fr->fr_isc = (void *)-1; |
| fr->fr_logtag = FR_NOLOGTAG; |
| fr->fr_type = FR_T_NONE; |
| if (use_inet6 != 0) |
| fr->fr_v = 6; |
| else |
| fr->fr_v = 4; |
| |
| nrules = 1; |
| } |
| |
| |
| static void setipftype() |
| { |
| for (fr = frc; fr != NULL; fr = fr->fr_next) { |
| if (fr->fr_type == FR_T_NONE) { |
| fr->fr_type = FR_T_IPF; |
| fr->fr_data = (void *)calloc(sizeof(fripf_t), 1); |
| fr->fr_dsize = sizeof(fripf_t); |
| fr->fr_ip.fi_v = frc->fr_v; |
| fr->fr_mip.fi_v = 0xf; |
| fr->fr_ipf->fri_sifpidx = -1; |
| fr->fr_ipf->fri_difpidx = -1; |
| } |
| if (fr->fr_type != FR_T_IPF) { |
| fprintf(stderr, "IPF Type not set\n"); |
| } |
| } |
| } |
| |
| |
| static frentry_t *addrule() |
| { |
| frentry_t *f, *f1, *f2; |
| int count; |
| |
| for (f2 = frc; f2->fr_next != NULL; f2 = f2->fr_next) |
| ; |
| |
| count = nrules; |
| if (count == 0) { |
| f = (frentry_t *)calloc(sizeof(*f), 1); |
| added++; |
| f2->fr_next = f; |
| bcopy(f2, f, sizeof(*f)); |
| if (f2->fr_caddr != NULL) { |
| f->fr_caddr = malloc(f->fr_dsize); |
| bcopy(f2->fr_caddr, f->fr_caddr, f->fr_dsize); |
| } |
| f->fr_next = NULL; |
| return f; |
| } |
| f = f2; |
| for (f1 = frc; count > 0; count--, f1 = f1->fr_next) { |
| f->fr_next = (frentry_t *)calloc(sizeof(*f), 1); |
| added++; |
| f = f->fr_next; |
| bcopy(f1, f, sizeof(*f)); |
| f->fr_next = NULL; |
| if (f->fr_caddr != NULL) { |
| f->fr_caddr = malloc(f->fr_dsize); |
| bcopy(f1->fr_caddr, f->fr_caddr, f->fr_dsize); |
| } |
| } |
| |
| return f2->fr_next; |
| } |
| |
| |
| static u_32_t lookuphost(name) |
| char *name; |
| { |
| u_32_t addr; |
| int i; |
| |
| hashed = 0; |
| pooled = 0; |
| dynamic = -1; |
| |
| for (i = 0; i < 4; i++) { |
| if (strncmp(name, frc->fr_ifnames[i], |
| sizeof(frc->fr_ifnames[i])) == 0) { |
| ifpflag = FRI_DYNAMIC; |
| dynamic = i; |
| return 0; |
| } |
| } |
| |
| if (gethost(name, &addr) == -1) { |
| fprintf(stderr, "unknown name \"%s\"\n", name); |
| return 0; |
| } |
| return addr; |
| } |
| |
| |
| static void dobpf(v, phrase) |
| int v; |
| char *phrase; |
| { |
| #ifdef IPFILTER_BPF |
| struct bpf_program bpf; |
| struct pcap *p; |
| #endif |
| fakebpf_t *fb; |
| u_32_t l; |
| char *s; |
| int i; |
| |
| for (fr = frc; fr != NULL; fr = fr->fr_next) { |
| if (fr->fr_type != FR_T_NONE) { |
| fprintf(stderr, "cannot mix IPF and BPF matching\n"); |
| return; |
| } |
| fr->fr_v = v; |
| fr->fr_type = FR_T_BPFOPC; |
| |
| if (!strncmp(phrase, "\"0x", 2)) { |
| phrase++; |
| fb = malloc(sizeof(fakebpf_t)); |
| |
| for (i = 0, s = strtok(phrase, " \r\n\t"); s != NULL; |
| s = strtok(NULL, " \r\n\t"), i++) { |
| fb = realloc(fb, (i / 4 + 1) * sizeof(*fb)); |
| l = (u_32_t)strtol(s, NULL, 0); |
| switch (i & 3) |
| { |
| case 0 : |
| fb[i / 4].fb_c = l & 0xffff; |
| break; |
| case 1 : |
| fb[i / 4].fb_t = l & 0xff; |
| break; |
| case 2 : |
| fb[i / 4].fb_f = l & 0xff; |
| break; |
| case 3 : |
| fb[i / 4].fb_k = l; |
| break; |
| } |
| } |
| if ((i & 3) != 0) { |
| fprintf(stderr, |
| "Odd number of bytes in BPF code\n"); |
| exit(1); |
| } |
| i--; |
| fr->fr_dsize = (i / 4 + 1) * sizeof(*fb); |
| fr->fr_data = fb; |
| return; |
| } |
| |
| #ifdef IPFILTER_BPF |
| bzero((char *)&bpf, sizeof(bpf)); |
| p = pcap_open_dead(DLT_RAW, 1); |
| if (!p) { |
| fprintf(stderr, "pcap_open_dead failed\n"); |
| return; |
| } |
| |
| if (pcap_compile(p, &bpf, phrase, 1, 0xffffffff)) { |
| pcap_perror(p, "ipf"); |
| pcap_close(p); |
| fprintf(stderr, "pcap parsing failed (%s)\n", phrase); |
| return; |
| } |
| pcap_close(p); |
| |
| fr->fr_dsize = bpf.bf_len * sizeof(struct bpf_insn); |
| fr->fr_data = malloc(fr->fr_dsize); |
| bcopy((char *)bpf.bf_insns, fr->fr_data, fr->fr_dsize); |
| if (!bpf_validate(fr->fr_data, bpf.bf_len)) { |
| fprintf(stderr, "BPF validation failed\n"); |
| return; |
| } |
| #endif |
| } |
| |
| #ifdef IPFILTER_BPF |
| if (opts & OPT_DEBUG) |
| bpf_dump(&bpf, 0); |
| #else |
| fprintf(stderr, "BPF filter expressions not supported\n"); |
| exit(1); |
| #endif |
| } |
| |
| |
| static void resetaddr() |
| { |
| hashed = 0; |
| pooled = 0; |
| dynamic = -1; |
| } |
| |
| |
| static alist_t *newalist(ptr) |
| alist_t *ptr; |
| { |
| alist_t *al; |
| |
| al = malloc(sizeof(*al)); |
| if (al == NULL) |
| return NULL; |
| al->al_not = 0; |
| al->al_next = ptr; |
| return al; |
| } |
| |
| |
| static int makepool(list) |
| alist_t *list; |
| { |
| ip_pool_node_t *n, *top; |
| ip_pool_t pool; |
| alist_t *a; |
| int num; |
| |
| if (list == NULL) |
| return 0; |
| top = calloc(1, sizeof(*top)); |
| if (top == NULL) |
| return 0; |
| |
| for (n = top, a = list; (n != NULL) && (a != NULL); a = a->al_next) { |
| n->ipn_addr.adf_addr.in4.s_addr = a->al_1; |
| n->ipn_mask.adf_addr.in4.s_addr = a->al_2; |
| n->ipn_info = a->al_not; |
| if (a->al_next != NULL) { |
| n->ipn_next = calloc(1, sizeof(*n)); |
| n = n->ipn_next; |
| } |
| } |
| |
| bzero((char *)&pool, sizeof(pool)); |
| pool.ipo_unit = IPL_LOGIPF; |
| pool.ipo_list = top; |
| num = load_pool(&pool, ipfioctl[IPL_LOGLOOKUP]); |
| |
| while ((n = top) != NULL) { |
| top = n->ipn_next; |
| free(n); |
| } |
| return num; |
| } |
| |
| |
| static u_int makehash(list) |
| alist_t *list; |
| { |
| iphtent_t *n, *top; |
| iphtable_t iph; |
| alist_t *a; |
| int num; |
| |
| if (list == NULL) |
| return 0; |
| top = calloc(1, sizeof(*top)); |
| if (top == NULL) |
| return 0; |
| |
| for (n = top, a = list; (n != NULL) && (a != NULL); a = a->al_next) { |
| n->ipe_addr.in4_addr = a->al_1; |
| n->ipe_mask.in4_addr = a->al_2; |
| n->ipe_value = 0; |
| if (a->al_next != NULL) { |
| n->ipe_next = calloc(1, sizeof(*n)); |
| n = n->ipe_next; |
| } |
| } |
| |
| bzero((char *)&iph, sizeof(iph)); |
| iph.iph_unit = IPL_LOGIPF; |
| iph.iph_type = IPHASH_LOOKUP; |
| *iph.iph_name = '\0'; |
| |
| if (load_hash(&iph, top, ipfioctl[IPL_LOGLOOKUP]) == 0) |
| sscanf(iph.iph_name, "%u", &num); |
| else |
| num = 0; |
| |
| while ((n = top) != NULL) { |
| top = n->ipe_next; |
| free(n); |
| } |
| return num; |
| } |
| |
| |
| void ipf_addrule(fd, ioctlfunc, ptr) |
| int fd; |
| ioctlfunc_t ioctlfunc; |
| void *ptr; |
| { |
| u_int add, del; |
| frentry_t *fr; |
| ipfobj_t obj; |
| |
| fr = ptr; |
| add = 0; |
| del = 0; |
| |
| bzero((char *)&obj, sizeof(obj)); |
| obj.ipfo_rev = IPFILTER_VERSION; |
| obj.ipfo_size = sizeof(*fr); |
| obj.ipfo_type = IPFOBJ_FRENTRY; |
| obj.ipfo_ptr = ptr; |
| |
| if ((opts & OPT_DONOTHING) != 0) |
| fd = -1; |
| |
| if (opts & OPT_ZERORULEST) { |
| add = SIOCZRLST; |
| } else if (opts & OPT_INACTIVE) { |
| add = (u_int)fr->fr_hits ? SIOCINIFR : |
| SIOCADIFR; |
| del = SIOCRMIFR; |
| } else { |
| add = (u_int)fr->fr_hits ? SIOCINAFR : |
| SIOCADAFR; |
| del = SIOCRMAFR; |
| } |
| |
| if (fr && (opts & OPT_OUTQUE)) |
| fr->fr_flags |= FR_OUTQUE; |
| if (fr->fr_hits) |
| fr->fr_hits--; |
| if (fr && (opts & OPT_VERBOSE)) |
| printfr(fr, ioctlfunc); |
| |
| if (opts & OPT_DEBUG) { |
| binprint(fr, sizeof(*fr)); |
| if (fr->fr_data != NULL) |
| binprint(fr->fr_data, fr->fr_dsize); |
| } |
| |
| if ((opts & OPT_ZERORULEST) != 0) { |
| if ((*ioctlfunc)(fd, add, (void *)&obj) == -1) { |
| if ((opts & OPT_DONOTHING) != 0) { |
| fprintf(stderr, "%d:", yylineNum); |
| perror("ioctl(SIOCZRLST)"); |
| } |
| } else { |
| #ifdef USE_QUAD_T |
| printf("hits %qd bytes %qd ", |
| (long long)fr->fr_hits, |
| (long long)fr->fr_bytes); |
| #else |
| printf("hits %ld bytes %ld ", |
| fr->fr_hits, fr->fr_bytes); |
| #endif |
| printfr(fr, ioctlfunc); |
| } |
| } else if ((opts & OPT_REMOVE) != 0) { |
| if ((*ioctlfunc)(fd, del, (void *)&obj) == -1) { |
| if ((opts & OPT_DONOTHING) != 0) { |
| fprintf(stderr, "%d:", yylineNum); |
| perror("ioctl(delete rule)"); |
| } |
| } |
| } else { |
| if ((*ioctlfunc)(fd, add, (void *)&obj) == -1) { |
| if (!(opts & OPT_DONOTHING)) { |
| fprintf(stderr, "%d:", yylineNum); |
| perror("ioctl(add/insert rule)"); |
| } |
| } |
| } |
| } |
| |
| |
| static void setsyslog() |
| { |
| savewords = yysettab(logwords); |
| yybreakondot = 1; |
| } |
| |
| |
| static void unsetsyslog() |
| { |
| yysettab(savewords); |
| yybreakondot = 0; |
| } |
| |
| |
| static void fillgroup(fr) |
| frentry_t *fr; |
| { |
| frentry_t *f; |
| |
| for (f = frold; f != NULL; f = f->fr_next) |
| if (strncmp(f->fr_grhead, fr->fr_group, FR_GROUPLEN) == 0) |
| break; |
| if (f == NULL) |
| return; |
| |
| /* |
| * Only copy down matching fields if the rules are of the same type |
| * and are of ipf type. The only fields that are copied are those |
| * that impact the rule parsing itself, eg. need for knowing what the |
| * protocol should be for rules with port comparisons in them. |
| */ |
| if (f->fr_type != fr->fr_type || f->fr_type != FR_T_IPF) |
| return; |
| |
| if (fr->fr_v == 0 && f->fr_v != 0) |
| fr->fr_v = f->fr_v; |
| |
| if (fr->fr_mproto == 0 && f->fr_mproto != 0) |
| fr->fr_mproto = f->fr_mproto; |
| if (fr->fr_proto == 0 && f->fr_proto != 0) |
| fr->fr_proto = f->fr_proto; |
| |
| if (((fr->fr_flx & FI_TCPUDP) == 0) && ((f->fr_flx & FI_TCPUDP) != 0)) |
| fr->fr_flx |= FI_TCPUDP; |
| } |