Annotation of parser3/src/classes/inet.C, revision 1.8
1.1 misha 1: /** @file
2: Parser: @b inet parser class.
3:
1.5 moko 4: Copyright (c) 2001-2012 Art. Lebedev Studio (http://www.artlebedev.com)
1.1 misha 5: Author: Alexandr Petrosian <paf@design.ru>(http://paf.design.ru)
6: */
7:
8: #include "pa_vmethod_frame.h"
9: #include "pa_request.h"
1.7 moko 10: #include "pa_vtable.h"
1.1 misha 11:
1.8 ! moko 12: #ifdef _MSC_VER
! 13: #include "ws2tcpip.h"
! 14: #endif
! 15:
! 16: volatile const char * IDENT_INET_C="$Id: inet.C,v 1.7 2015/05/01 21:40:09 moko Exp $";
1.5 moko 17:
1.1 misha 18: class MInet: public Methoded {
19: public:
20: MInet();
21: };
22:
23: // global variables
24:
25: DECLARE_CLASS_VAR(inet, new MInet, 0);
26:
27:
28: static void _ntoa(Request& r, MethodParams& params){
29: unsigned long l=(unsigned long)trunc(params.as_double(0, "parameter must be expression", r));
1.2 misha 30: static const int ip_cstr_bufsize=3*4+3+1+1;
1.1 misha 31: char* ip_cstr=new(PointerFreeGC) char[ip_cstr_bufsize];
1.7 moko 32: snprintf(ip_cstr, ip_cstr_bufsize, "%u.%u.%u.%u", (l>>24) & 0xFF, (l>>16) & 0xFF, (l>>8) & 0xFF, l & 0xFF);
1.1 misha 33: r.write_no_lang(*new String(ip_cstr));
34: }
35:
36: static void _aton(Request& r, MethodParams& params){
37: const String ip=params.as_string(0, PARAMETER_MUST_BE_STRING);
38: if(ip.is_empty())
1.7 moko 39: throw Exception(PARSER_RUNTIME, 0, "IP address must not be empty.");
1.1 misha 40:
41: const char* ip_cstr=ip.cstr();
42: ulong result=0;
43: uint byte_value=0;
44: uint dot_cnt=0;
45: bool byte_start=true;
46: bool err=false;
47: const char* p=ip_cstr;
48: while(char c=*p++){
1.6 moko 49: int digit=(int)(c-'0'); // assume ascii
1.1 misha 50: if(digit>=0 && digit<=9){
51: byte_start=false;
1.6 moko 52: if((byte_value=byte_value*10+(uint)digit) > 255){
1.1 misha 53: err=true;
54: break;
55: }
56: } else if(c=='.'){
57: if(byte_start){ // two dots in row or IP started with dot
58: err=true;
59: break;
60: } else {
61: byte_start=true;
62: dot_cnt++;
63: result=(result << 8)+(ulong)byte_value;
64: byte_value=0;
65: }
66: } else { // invalid char
67: err=true;
68: break;
69: }
70: }
71:
72: if(err || dot_cnt!=3 || byte_start){
1.7 moko 73: throw Exception(PARSER_RUNTIME, 0, "Invalid IP address '%s' specified.", ip_cstr);
1.1 misha 74: } else {
75: result=(result << 8)+(ulong)byte_value;
76: r.write_no_lang(*new VDouble(result));
77: }
78: }
79:
1.7 moko 80: int ipv_format(const String &value){
81: if(value == "4") return AF_INET;
82: if(value == "6") return AF_INET6;
83: if(value == "any") return AF_UNSPEC;
84: throw Exception(PARSER_RUNTIME, &value, "ipv option value must be 4 or 6 or any");
85: }
86:
87: static void _ip2name(Request& r, MethodParams& params){
88: const String sip=params.as_string(0, PARAMETER_MUST_BE_STRING);
89: if(sip.is_empty())
90: throw Exception(PARSER_RUNTIME, 0, "IP address must not be empty.");
91:
92: const char* ip_cstr=sip.cstr();
93:
94: struct addrinfo hints, *info=0;
95: memset(&hints, 0, sizeof(hints));
96: hints.ai_family=AF_INET;
97: hints.ai_socktype=SOCK_STREAM;
98: hints.ai_flags=AI_NUMERICHOST; // to disable DNS lookup
99:
100: if(params.count() == 2)
101: if(HashStringValue* options=params.as_hash(1)){
102: int valid_options=0;
103: if(Value* value=options->get("ipv")){
104: hints.ai_family=ipv_format(r.process_to_value(*value).as_string());
105: valid_options++;
106: }
107: if(valid_options!=options->count())
108: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
109: }
110:
111: int error=getaddrinfo(ip_cstr, 0, &hints, &info);
112: if(error==EAI_NONAME)
113: throw Exception(PARSER_RUNTIME, 0, "Invalid IP address '%s' specified", ip_cstr);
114: if(error)
115: throw Exception(PARSER_RUNTIME, 0, "Invalid IP address '%s': %s", ip_cstr, gai_strerror(error));
116:
117: char hbuf[NI_MAXHOST];
118: error=getnameinfo(info->ai_addr, info->ai_addrlen, hbuf, sizeof(hbuf), NULL, 0, NI_NAMEREQD);
119:
120: freeaddrinfo(info);
121:
122: if(!error){
123: r.write_no_lang(*new String(pa_idna_decode(pa_strdup(hbuf), r.charsets.source()), String::L_TAINTED));
124: } else if(error!=EAI_NONAME){
125: throw Exception(PARSER_RUNTIME, 0, "Can't resolve IP address '%s': %s", ip_cstr, gai_strerror(error));
126: }
127: }
128: static void _name2ip(Request& r, MethodParams& params){
129: const String sname=params.as_string(0, PARAMETER_MUST_BE_STRING);
130: if(sname.is_empty())
131: throw Exception(PARSER_RUNTIME, 0, "Domain name must not be empty.");
132:
133: const char* name_cstr=pa_idna_encode(sname.cstr(), r.charsets.source());
134:
135: struct addrinfo hints, *info;
136: memset(&hints, 0, sizeof(hints));
137: hints.ai_family=AF_INET;
138: hints.ai_socktype=SOCK_STREAM;
139:
140: Table *table=NULL;
141:
142: if(params.count() == 2)
143: if(HashStringValue* options=params.as_hash(1)){
144: int valid_options=0;
145: if(Value* value=options->get("ipv")){
146: hints.ai_family=ipv_format(r.process_to_value(*value).as_string());
147: valid_options++;
148: }
149: if(Value* value=options->get("table")){
150: if(r.process_to_value(*value).as_bool()){
151: Table::columns_type columns(new ArrayString);
152: static const String sip("ip"), sversion("version");
153: *columns+=&sip; *columns+=&sversion;
154: table=new Table(columns);
155: }
156: valid_options++;
157: }
158: if(valid_options!=options->count())
159: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
160: }
161:
162: int error=getaddrinfo(name_cstr, NULL, &hints, &info);
163:
164: if(error)
165: throw Exception(PARSER_RUNTIME, 0, "Can't resolve domain name '%s': %s", name_cstr, gai_strerror(error));
166:
167: char hbuf[INET6_ADDRSTRLEN];
168:
169: for(struct addrinfo *cur=info; cur; cur=cur->ai_next) {
170: if(error=getnameinfo(cur->ai_addr, cur->ai_addrlen, hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST))
171: throw Exception(PARSER_RUNTIME, 0, "Can't translate address: %s", gai_strerror(error));
172: String *saddr=new String(pa_strdup(hbuf), String::L_TAINTED);
173: if(table){
174: Table::element_type row(new ArrayString());
175: static const String sv4("4"), sv6("6"), sunknown("unknown");
176: *row+=saddr;
177: *row+=cur->ai_family == AF_INET ? &sv4 : cur->ai_family == AF_INET6 ? &sv6 : &sunknown;
178: *table+=row;
179: } else {
180: r.write_no_lang(*saddr);
181: break;
182: }
183: }
184:
185: if(table)
186: r.write_no_lang(*new VTable(table));
187:
188: freeaddrinfo(info);
189: }
190:
1.1 misha 191: // constructor
192: MInet::MInet(): Methoded("inet") {
193: add_native_method("ntoa", Method::CT_STATIC, _ntoa, 1, 1);
194: add_native_method("aton", Method::CT_STATIC, _aton, 1, 1);
1.7 moko 195: // ^inet:ip2name[ip; $.ipv[4|6|any] ]
196: add_native_method("ip2name", Method::CT_STATIC, _ip2name, 1, 2);
197: // ^inet:name2ip[name; $.ipv[4|6|any] $.table(true) ]
198: add_native_method("name2ip", Method::CT_STATIC, _name2ip, 1, 2);
1.1 misha 199: }
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