1 function portstr(type, str) {
3 if (insmod_mport != 1) {
4 print "insmod ipt_multiport >&- 2>&-"
7 if (type == "src") return " -m multiport --sports " str
8 else return " -m multiport --dports " str
11 function str2ipt(str) {
14 if (_l["src"] != "") _cmd = _cmd " -s " _l["src"]
15 if (_l["dest"] != "") _cmd = _cmd " -d " _l["dest"]
16 if (_l["proto"] != "") {
17 _cmd = _cmd " -p " _l["proto"]
19 # scripts need to check for proto="" and emit two rules in that case
20 if ((_l["proto"] == "") || (_l["proto"] == "tcp") || (_l["proto"] == "udp")) {
21 if (_l["sport"] != "") _cmd = _cmd portstr("src", _l["sport"])
22 if (_l["dport"] != "") _cmd = _cmd portstr("dest", _l["dport"])
24 if (_l["layer7"] != "") {
26 print "insmod ipt_layer7 >&- 2>&-"
29 _cmd = _cmd " -m layer7 --l7proto " _l["layer7"]
34 function str2data(str) {
36 _n = split(str, _o, "[\t ]")
37 for (_i = 1; _i <= _n; _i++) {
38 _n2 = split(_o[_i], _c, "=")
39 if (_n2 == 2) _l[_c[1]] = _c[2]
43 function bitcount(c) {
44 c=and(rshift(c, 1),0x55555555)+and(c,0x55555555)
45 c=and(rshift(c, 2),0x33333333)+and(c,0x33333333)
46 c=and(rshift(c, 4),0x0f0f0f0f)+and(c,0x0f0f0f0f)
47 c=and(rshift(c, 8),0x00ff00ff)+and(c,0x00ff00ff)
48 c=and(rshift(c,16),0x0000ffff)+and(c,0x0000ffff)
52 function validate_netmask(nm) {
53 return and(-nm,compl(nm))
57 for (ret=0,n=split(ip,a,"\."),x=1;x<=n;x++) ret=or(lshift(ret,8),a[x])
61 function int2ip(ip,ret,x) {
64 for(;x<3;ret=and(ip,255)"."ret,ip=rshift(ip,8),x++);