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1 | /**/ |
2 | |
3 | #ifndef ADNS_INTERNAL_H_INCLUDED |
4 | #define ADNS_INTERNAL_H_INCLUDED |
5 | |
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6 | #include <sys/time.h> |
7 | |
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8 | #include "adns.h" |
9 | |
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10 | /* Configuration and constants */ |
11 | |
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12 | #define MAXSERVERS 5 |
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13 | #define MAXUDPRETRIES 15 |
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14 | #define UDPRETRYMS 2000 |
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15 | #define TCPMS 30000 |
16 | #define LOCALRESOURCEMS 20 |
17 | |
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18 | /* Shared data structures */ |
19 | |
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20 | union adns__align { |
21 | adns_status status; |
22 | char *cp; |
23 | adns_rrtype type; |
24 | int int; |
25 | struct in_addr ia; |
26 | unsigned long ul; |
27 | }; |
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28 | |
29 | struct adns__query { |
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30 | /* FIXME: make sure this is all init'd properly */ |
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31 | adns_query back, next; |
32 | adns_query parent; |
33 | struct { adns_query head, tail; } children; |
34 | struct { adns_query back, next; } siblings; |
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35 | adns_rrtype type; |
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36 | adns_answer *answer; |
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37 | size_t ansalloc; ansused; |
38 | int id, flags, udpretries; /* udpretries==-1 => _f_usevc or too big for UDP */ |
39 | int nextudpserver; |
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40 | unsigned long sentudp, senttcp; /* bitmaps indexed by server */ |
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41 | struct timeval timeout; |
42 | void *context; |
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43 | unsigned char *querymsg; |
44 | int querylen; |
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45 | char owner[1]; |
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46 | /* Possible states: |
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47 | * Queue child id answer nextserver sentudp senttcp |
48 | * tosend null >=0 null any any any |
49 | * timew null >=0 null any at least 1 bit set any |
50 | * childw set >=0 partial any any any |
51 | * output null -1 set/null any any any |
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52 | */ |
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53 | }; |
54 | |
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55 | struct adns__vbuf { |
56 | size_t used, avail; |
57 | unsigned char *buf; |
58 | }; |
59 | |
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60 | struct adns__state { |
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61 | /* FIXME: make sure this is all init'd properly */ |
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62 | adns_initflags iflags; |
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63 | struct { adns_query head, tail; } tosend, timew, childw, output; |
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64 | int nextid, udpsocket; |
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65 | adns_vbuf rqbuf, tcpsend, tcprecv; |
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66 | int nservers, tcpserver; |
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67 | enum adns__tcpstate { server_disc, server_connecting, server_ok } tcpstate; |
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68 | int tcpsocket; |
69 | struct timeval tcptimeout; |
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70 | struct server { |
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71 | struct in_addr addr; |
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72 | } servers[MAXSERVERS]; |
73 | }; |
74 | |
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75 | /* From setup.c: */ |
76 | |
77 | void adns__debug(adns_state ads, const char *fmt, ...) PRINTFFORMAT(2,3); |
78 | void adns__diag(adns_state ads, const char *fmt, ...) PRINTFFORMAT(2,3); |
79 | |
80 | /* From submit.c: */ |
81 | |
82 | void adns__query_fail(adns_state ads, adns_query qu, adns_status stat); |
83 | |
84 | /* From query.c: */ |
85 | |
86 | void adns__quproc_tosend(adns_state ads, adns_query qu, struct timeval now) { |
87 | |
88 | /* Useful static inline functions: */ |
89 | |
90 | static inline void timevaladd(struct timeval *tv_io, long ms) { |
91 | struct timeval tmp; |
92 | assert(ms>=0); |
93 | tmp= *tv_io; |
94 | tmp.tv_usec += (ms%1000)*1000; |
95 | tmp.tv_sec += ms/1000; |
96 | if (tmp.tv_usec >= 1000) { tmp.tv_sec++; tmp.tv_usec -= 1000; } |
97 | *tv_io= tmp; |
98 | } |
99 | |
100 | /* Useful macros */ |
101 | |
102 | #define LIST_UNLINK_PART(list,node,part) \ |
103 | do { \ |
104 | if ((node)->back) (node)->back->part next= (node)->part next; \ |
105 | else (list).head= (node)->part next; \ |
106 | if ((node)->next) (node)->next->part back= (node)->part back; \ |
107 | else (list).tail= (node)->part back; \ |
108 | } while(0) |
109 | |
110 | #define LIST_LINK_TAIL_PART(list,node,part) \ |
111 | do { \ |
112 | (node)->part back= 0; \ |
113 | (node)->part next= (list).tail; \ |
114 | if ((list).tail) (list).tail->part back= (node); else (list).part head= (node); \ |
115 | (list).tail= (node); \ |
116 | } while(0) |
117 | |
118 | #define LIST_UNLINK(list,node) LIST_UNLINK_PART(list,node,) |
119 | #define LIST_LINK_TAIL_PART(list,node) LIST_LINK_TAIL(list,node,) |
120 | |
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121 | #endif |