Commit | Line | Data |
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dc0d77d7 CE |
1 | #include "str.h" |
2 | #include "byte.h" | |
3 | #include "scan.h" | |
4 | #include "exit.h" | |
5 | #include "stralloc.h" | |
6 | #include "buffer.h" | |
7 | #include "strerr.h" | |
8 | #include "uint16.h" | |
9 | #include "response.h" | |
10 | #include "case.h" | |
11 | #include "printpacket.h" | |
12 | #include "parsetype.h" | |
13 | #include "ip4.h" | |
14 | #include "dns.h" | |
15 | ||
16 | extern int respond(char *,char *,char *); | |
17 | ||
18 | #define FATAL "tinydns-get: fatal: " | |
19 | ||
20 | void usage(void) | |
21 | { | |
22 | strerr_die1x(100,"tinydns-get: usage: tinydns-get type name [ip]"); | |
23 | } | |
24 | void oops(void) | |
25 | { | |
26 | strerr_die2sys(111,FATAL,"unable to parse: "); | |
27 | } | |
28 | ||
29 | static char ip[4]; | |
30 | static char type[2]; | |
31 | static char *q; | |
32 | ||
33 | static stralloc out; | |
34 | ||
35 | int main(int argc,char **argv) | |
36 | { | |
37 | uint16 u16; | |
38 | ||
39 | if (!*argv) usage(); | |
40 | ||
41 | if (!*++argv) usage(); | |
42 | if (!parsetype(*argv,type)) usage(); | |
43 | ||
44 | if (!*++argv) usage(); | |
45 | if (!dns_domain_fromdot(&q,*argv,str_len(*argv))) oops(); | |
46 | ||
47 | if (*++argv) { | |
48 | if (!ip4_scan(*argv,ip)) usage(); | |
49 | } | |
50 | ||
51 | if (!stralloc_copys(&out,"")) oops(); | |
52 | uint16_unpack_big(type,&u16); | |
53 | if (!stralloc_catulong0(&out,u16,0)) oops(); | |
54 | if (!stralloc_cats(&out," ")) oops(); | |
55 | if (!dns_domain_todot_cat(&out,q)) oops(); | |
56 | if (!stralloc_cats(&out,":\n")) oops(); | |
57 | ||
58 | if (!response_query(q,type,DNS_C_IN)) oops(); | |
59 | response[3] &= ~128; | |
60 | response[2] &= ~1; | |
61 | response[2] |= 4; | |
62 | case_lowerb(q,dns_domain_length(q)); | |
63 | ||
64 | if (byte_equal(type,2,DNS_T_AXFR)) { | |
65 | response[3] &= ~15; | |
66 | response[3] |= 4; | |
67 | } | |
68 | else | |
69 | if (!respond(q,type,ip)) goto DONE; | |
70 | ||
71 | if (!printpacket_cat(&out,response,response_len)) oops(); | |
72 | ||
73 | DONE: | |
74 | buffer_putflush(buffer_1,out.s,out.len); | |
75 | _exit(0); | |
76 | } |