1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
|
enum {
NbNameLen = 16,
NbnsTimeoutBroadcast = 1000,
NbnsRetryBroadcast = 3,
NbnsPort = 137,
NbDgramMaxLen = 576,
};
typedef struct NbnsHdr {
uchar name_trn_id[2];
uchar ctrl[2];
uchar qdcount[2];
uchar ancount[2];
uchar nscount[2];
uchar arcount[2];
} NbnsHdr;
enum {
NbnsResponse = 1 << 15
};
enum {
NbnsOpShift = 11,
NbnsOpMask = 0xf,
NbnsOpQuery = 0,
NbnsOpRegistration = 5,
NbnsOpRelease = 6,
NbnsOpWack = 7,
NbnsOpRefresh = 8
};
enum {
NbnsFlagBroadcast = (1 << 4),
NbnsFlagRecursionAvailable = (1 << 7),
NbnsFlagRecursionDesired = (1 << 8),
NbnsFlagTruncation = (1 << 9),
NbnsFlagAuthoritativeAnswer = (1 << 10),
};
enum {
NbnsRcodeShift = 0,
NbnsRcodeMask = 0xf,
};
enum {
NbnsQuestionTypeNb = 0x0020,
NbnsQuestionTypeNbStat = 0x0021,
NbnsQuestionClassIn = 0x0001,
};
enum {
NbnsResourceTypeA = 0x0001,
NbnsResourceTypeNs = 0x0002,
NbnsResourceTypeNull = 0x000a,
NbnsResourceTypeNb = 0x0020,
NbnsResourceTypeNbStat = 0x0021,
NbnsResourceClassIn = 0x0001,
};
typedef struct NbnsMessageQuestion NbnsMessageQuestion;
typedef struct NbnsMessageResource NbnsMessageResource;
typedef uchar NbName[NbNameLen];
int nbnamedecode(uchar *base, uchar *p, uchar *ep, NbName name);
int nbnameencode(uchar *p, uchar *ep, NbName name);
int nbnameequal(NbName name1, NbName name2);
void nbnamecpy(NbName n1, NbName n2);
void nbmknamefromstring(NbName nbname, char *string);
void nbmknamefromstringandtype(NbName nbname, char *string, uchar type);
void nbmkstringfromname(char *buf, int buflen, NbName name);
#pragma varargck type "B" uchar *
int nbnamefmt(Fmt *);
struct NbnsMessageQuestion {
NbName name;
ushort type;
ushort class;
NbnsMessageQuestion *next;
};
NbnsMessageQuestion *nbnsmessagequestionnew(NbName name, ushort type, ushort class);
struct NbnsMessageResource {
NbName name;
ushort type;
ushort class;
ulong ttl;
ushort rdlength;
uchar *rdata;
NbnsMessageResource *next;
};
NbnsMessageResource *nbnsmessageresourcenew(NbName name, ushort type, ushort class, ulong ttl, int rdcount, uchar *rdata);
typedef struct NbnsMessage {
ushort id;
int response;
int opcode;
int broadcast;
int recursionavailable;
int recursiondesired;
int truncation;
int authoritativeanswer;
int rcode;
NbnsMessageQuestion *q;
NbnsMessageResource *an;
NbnsMessageResource *ns;
NbnsMessageResource *ar;
} NbnsMessage;
NbnsMessage *nbnsmessagenew(void);
void nbnsmessageaddquestion(NbnsMessage *s, NbnsMessageQuestion *q);
void nbnsmessageaddresource(NbnsMessageResource **rp, NbnsMessageResource *r);
NbnsMessage *nbnsconvM2S(uchar *ap, int nap);
void nbnsmessagefree(NbnsMessage **sp);
void nbnsdumpmessage(NbnsMessage *s);
int nbnsconvS2M(NbnsMessage *s, uchar *ap, int nap);
NbnsMessage *nbnsmessagenamequeryrequestnew(ushort id, int broadcast, NbName name);
NbnsMessage *nbnsmessagenameregistrationrequestnew(ushort id, int broadcast, NbName name, ulong ttl, uchar *ipaddr);
typedef struct NbnsTransaction NbnsTransaction;
struct NbnsTransaction {
ushort id;
Channel *c;
NbnsTransaction *next;
};
ushort nbnsnextid(void);
int nbnsfindname(uchar *serveripaddr, NbName name, uchar *ipaddr, ulong *ttlp);
int nbnsaddname(uchar *serveripaddr, NbName name, ulong ttl, uchar *ipaddr);
NbnsTransaction *nbnstransactionnew(NbnsMessage *request, uchar *ipaddr);
void nbnstransactionfree(NbnsTransaction **tp);
typedef struct NbnsAlarm NbnsAlarm;
struct NbnsAlarm {
Channel *c;
vlong expirems;
NbnsAlarm *next;
};
void nbnsalarmset(NbnsAlarm *a, ulong millisec);
void nbnsalarmcancel(NbnsAlarm *a);
void nbnsalarmfree(NbnsAlarm **ap);
NbnsAlarm *nbnsalarmnew(void);
void nbnsalarmend(void);
typedef struct NbSession NbSession;
typedef int NBSSWRITEFN(NbSession *s, void *buf, long n);
struct NbSession {
int fd;
void *magic;
NbName from;
NbName to;
};
int nbsslisten(NbName to, NbName from, int (*accept)(void *magic, NbSession *s, NBSSWRITEFN **write), void *magic);
NbSession *nbssconnect(NbName to, NbName from);
void nbssfree(NbSession *s);
typedef struct NbScatterGather NbScatterGather;
struct NbScatterGather {
void *p;
long l;
};
int nbssgatherwrite(NbSession *s, NbScatterGather *a);
long nbssscatterread(NbSession *, NbScatterGather *a);
int nbsswrite(NbSession *s, void *buf, long n);
long nbssread(NbSession *s, void *buf, long n);
void *nbemalloc(ulong);
int nbnameresolve(NbName name, uchar *ipaddr);
void nbdumpdata(void *data, long datalen);
typedef struct NbDgram {
uchar type;
uchar flags;
ushort id;
uchar srcip[IPaddrlen];
ushort srcport;
union {
struct {
ushort length;
ushort offset;
NbName srcname;
NbName dstname;
uchar *data;
} datagram;
struct {
uchar code;
} error;
struct {
NbName dstname;
} query;
};
} NbDgram;
enum {
NbDgramDirectUnique = 0x10,
NbDgramDirectGroup,
NbDgramBroadcast,
NbDgramError,
NbDgramQueryRequest,
NbDgramPositiveQueryResponse,
NbDgramNegativeQueryResponse,
NbDgramMore = 1,
NbDgramFirst = 2,
NbDgramPort = 138,
NbDgramErrorDestinationNameNotPresent = 0x82,
NbDgramMaxPacket = 576,
};
typedef struct NbDgramSendParameters {
NbName to;
uchar type;
} NbDgramSendParameters;
int nbdgramconvM2S(NbDgram *s, uchar *p, uchar *ep);
int nbdgramconvS2M(uchar *p, uchar *ep, NbDgram *s);
void nbdgramdump(NbDgram *s);
int nbdgramsendto(uchar *ipaddr, ushort port, NbDgram *s);
int nbdgramsend(NbDgramSendParameters *p, unsigned char *data, long datalen);
char *nbdgramlisten(NbName to, int (*deliver)(void *magic, NbDgram *s), void *magic);
int nbnametablefind(NbName name, int add);
int nbnameisany(NbName name);
int nbremotenametablefind(NbName name, uchar *ipaddr);
int nbremotenametableadd(NbName name, uchar *ipaddr, ulong ttl);
typedef struct NbGlobals {
uchar myipaddr[IPaddrlen];
uchar bcastaddr[IPaddrlen];
NbName myname;
} NbGlobals;
extern NbGlobals nbglobals;
extern NbName nbnameany;
int nbinit(void);
char *nbudpannounce(ushort port, int *fdp);
extern int nbudphdrsize;
|
