| 1 | /* |
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| 2 | ** OLDBIND.COMPAT.C |
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| 3 | ** |
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| 4 | ** Very old systems do not have res_query(), res_querydomain() or |
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| 5 | ** res_search(), so emulate them here. |
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| 6 | ** |
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| 7 | ** You really ought to be upgrading to a newer version of BIND |
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| 8 | ** (4.8.2 or later) rather than be using this. |
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| 9 | ** |
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| 10 | ** J.R. Oldroyd <jr@inset.com> |
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| 11 | */ |
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| 12 | |
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| 13 | #include <sys/types.h> |
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| 14 | #include <netinet/in.h> |
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| 15 | #include <arpa/nameser.h> |
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| 16 | #include <resolv.h> |
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| 17 | |
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| 18 | typedef union |
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| 19 | { |
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| 20 | HEADER qb1; |
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| 21 | char qb2[PACKETSZ]; |
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| 22 | } querybuf; |
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| 23 | |
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| 24 | res_query(dname, class, type, data, datalen) |
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| 25 | char * dname; |
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| 26 | int class; |
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| 27 | int type; |
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| 28 | char * data; |
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| 29 | int datalen; |
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| 30 | { |
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| 31 | int n; |
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| 32 | querybuf buf; |
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| 33 | |
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| 34 | n = res_mkquery(QUERY, dname, class, type, (char *) NULL, 0, |
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| 35 | NULL, (char *) &buf, sizeof buf); |
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| 36 | n = res_send((char *)&buf, n, data, datalen); |
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| 37 | |
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| 38 | return n; |
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| 39 | } |
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| 40 | |
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| 41 | res_querydomain(host, dname, class, type, data, datalen) |
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| 42 | char * host; |
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| 43 | char * dname; |
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| 44 | int class; |
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| 45 | int type; |
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| 46 | char * data; |
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| 47 | int datalen; |
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| 48 | { |
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| 49 | int n; |
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| 50 | querybuf buf; |
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| 51 | char dbuf[256]; |
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| 52 | |
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| 53 | strcpy(dbuf, host); |
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| 54 | if (dbuf[strlen(dbuf)-1] != '.') |
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| 55 | strcat(dbuf, "."); |
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| 56 | strcat(dbuf, dname); |
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| 57 | n = res_mkquery(QUERY, dbuf, class, type, (char *) NULL, 0, |
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| 58 | NULL, (char *)&buf, sizeof buf); |
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| 59 | n = res_send((char *) &buf, n, data, datalen); |
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| 60 | |
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| 61 | return n; |
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| 62 | } |
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| 63 | |
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| 64 | res_search(dname, class, type, data, datalen) |
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| 65 | char * dname; |
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| 66 | int class; |
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| 67 | int type; |
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| 68 | char * data; |
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| 69 | int datalen; |
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| 70 | { |
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| 71 | int n; |
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| 72 | querybuf buf; |
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| 73 | |
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| 74 | n = res_mkquery(QUERY, dname, class, type, (char *)NULL, 0, |
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| 75 | NULL, (char *) &buf, sizeof buf); |
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| 76 | n = res_send((char *) &buf, n, data, datalen); |
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| 77 | |
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| 78 | return n; |
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| 79 | } |
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