{"id":1737,"date":"2024-11-20T10:48:26","date_gmt":"2024-11-20T02:48:26","guid":{"rendered":"https:\/\/www.madbull.site\/?p=1737"},"modified":"2024-11-20T10:48:42","modified_gmt":"2024-11-20T02:48:42","slug":"librdns%e4%b8%80%e4%b8%aa%e5%bc%80%e6%ba%90dns%e8%a7%a3%e6%9e%90%e5%ba%93","status":"publish","type":"post","link":"https:\/\/www.madbull.site\/?p=1737","title":{"rendered":"librdns\u4e00\u4e2a\u5f00\u6e90DNS\u89e3\u6790\u5e93"},"content":{"rendered":"\n

\u4ecb\u7ecd<\/strong><\/p>\n\n\n\n

<\/div>\n\n\n\n

librdns\u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u5f02\u6b65\u591a\u529f\u80fd\u63d2\u4ef6\u5f0f\u7684\u89e3\u6790\u5668\uff0c\u7528\u4e8eDNS\u89e3\u6790\u3002<\/p>\n\n\n\n

<\/div>\n\n\n\n

\u6e90\u4ee3\u7801\u5730\u5740\uff1ahttps:\/\/github.com\/vstakhov\/librdns<\/a><\/p>\n\n\n\n

<\/div>\n\n\n\n

librdns\u4f7f\u7528libev\u548clibevent\u7684\u65b9\u5f0f\u96c6\u6210\uff0c\u6765\u5b9e\u73b0\u5f02\u6b65\u64cd\u4f5c\u3002<\/p>\n\n\n\n

<\/div>\n\n\n\n

\u5173\u4e8eDNS\u76f8\u5173\u77e5\u8bc6\u53c2\u770b\u5f80\u671f\u6587\u7ae0\uff1ahttps:\/\/www.madbull.site\/?p=1719<\/a><\/p>\n\n\n\n

<\/div>\n\n\n\n

\u5173\u4e8elibev\u7684\u4ecb\u7ecd\u53c2\u770b\u5f80\u671f\u6587\u7ae0\uff1ahttps:\/\/www.madbull.site\/?p=1732<\/a><\/p>\n\n\n\n

<\/div>\n\n\n\n

\u7f16\u8bd1\u5b89\u88c5<\/strong><\/p>\n\n\n\n

<\/div>\n\n\n\n

\u4e0b\u8f7d\u6e90\u6587\u4ef6\uff0c\u6307\u4ee4\uff1agit clone https:\/\/github.com\/vstakhov\/librdns.git<\/code><\/p>\n\n\n\n

<\/div>\n\n\n\n

\u7f16\u8bd1\uff0c\u5148\u8fdb\u5165\u62c9\u53d6\u7684\u6e90\u4ee3\u7801\u76ee\u5f55\uff0c\u7136\u540e\u6267\u884c\uff1amkdir build && cd build && cmake .. && make -j 5<\/code><\/p>\n\n\n\n

<\/div>\n\n\n\n
\"\"<\/figure>\n\n\n\n
<\/div>\n\n\n\n

\u5b89\u88c5\uff0c\u4e3b\u8981\u662f\u628a\u7f16\u8bd1\u540e\u7684so\u5e93\u548c\u9700\u8981\u5f15\u7528\u7684\u5934\u6587\u4ef6\u62ff\u5230\u7cfb\u7edf\u76ee\u5f55\u3002\u6267\u884c\u6307\u4ee4\uff1acp lib* ..\/include\/* \/usr\/local\/include\/<\/code>\u3002\u7136\u540e\u91cd\u65b0\u52a0\u8f7d\u7cfb\u7edf\u52a8\u6001\u5e93 ldconfig<\/code><\/p>\n\n\n\n

<\/div>\n\n\n\n
\"\"<\/figure>\n\n\n\n
<\/div>\n\n\n\n

\u6d4b\u8bd5\u793a\u4f8b<\/strong><\/p>\n\n\n\n

<\/div>\n\n\n\n

\u5728 librdns \u6e90\u4ee3\u7801\u91cc\u5df2\u7ecf\u6709\u4e24\u4e2a\u6d4b\u8bd5\u6587\u4ef6\uff0c\u6211\u8fd9\u91cc\u505a\u4e86\u4e00\u4e9b\u4fee\u6539\uff0c\u628a\u83b7\u53d6\u5230\u7684\u6570\u636e\u6253\u5370\u4e86\u51fa\u6765\u3002\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n\n\n\n

<\/div>\n\n\n\n

trdns.c<\/p>\n\n\n\n

<\/div>\n\n\n\n
\/\/ gcc -Wall -o test trdns.c -lev -lrdns\n\n#include <stdlib.h>\n#include <stdio.h>\n#include <unistd.h>\n\n#include \"rdns.h\"\n#include \"rdns_curve.h\"\n#include \"rdns_ev.h\"\n\n#define LL_FOREACH_SAFE(head,el,tmp)                                    \\\n    LL_FOREACH_SAFE2(head,el,tmp,next)\n\n#define LL_FOREACH_SAFE2(head,el,tmp,next)                              \\\n  for((el)=(head);(el) && (tmp = (el)->next, 1); (el) = tmp)\n\n\nstatic int remain_tests = 0;\n\nstatic void\nrdns_regress_callback (struct rdns_reply *reply, void *arg)\n{\n    \/\/ \u83b7\u53d6\u6709\u591a\u5c11\u4e2a\u67e5\u8be2\u9879\n    unsigned int count ;\n    const struct rdns_request_name* names = rdns_request_get_name (reply->request, &count);\n    for( int i=0 ; i < count ; ++i ) {\n        printf (\"===========================\\ncount %d host: %s type: %d result\\n\", count, names[i].name, names[i].type ) ;\n    }\n\n    \/\/ \u5224\u65ad\u662f\u5426\u83b7\u53d6DNS\u6210\u529f\n    if(reply->code != RDNS_RC_NOERROR) {\n        printf(\"failed code : %d\\n\", reply->code) ;\n        if (--remain_tests == 0) {\n            rdns_resolver_release (reply->resolver);\n        }\n        return ;\n    }\n\n    \/\/ \u904d\u5386\u8fd4\u56de\u7684\u7ed3\u679c\u5b9e\u4f53\n    struct rdns_reply_entry *entry, *tmp ;\n    LL_FOREACH_SAFE (reply->entries, entry, tmp) {\n\n\n        switch (entry->type) {\n        case RDNS_REQUEST_MX :        \/\/ MX \u7ed3\u679c\n            printf(\"MX ===== record rslt is : %u %s\\n\", entry->content.mx.priority , entry->content.mx.name ) ;\n\n            break ;\n        case RDNS_REQUEST_A :        \/\/ A \u7ed3\u679c\n            char ip_str[16] ;\n            inet_ntop(AF_INET, &entry->content.a.addr, ip_str, sizeof(ip_str) ) ;\n            printf(\"A ===== record rslt is : %s\\n\", ip_str) ;\n\n            break ;\n        case RDNS_REQUEST_TXT :        \/\/ TXT \u7ed3\u679c\n            printf(\"TXT ===== rslt is : %s\\n\", entry->content.txt.data) ;\n\n            break ;\n\n        default :\n            printf(\"wrong type : %u\\n\", entry->type) ;\n        }\n    }\n\n    if (--remain_tests == 0) {\n        \/\/ \u51cf\u5c11 DNS\u89e3\u6790\u670d\u52a1\u5668\u7684\u5f15\u7528\uff0c\u5982\u679c \u4e3a 0 \u5219\u91ca\u653e\u7a7a\u95f4 \n        \/\/ \u540c\u65f6\u4f1a\u505c\u6b62 libev \u7684 loop \u5faa\u73af\n        rdns_resolver_release (reply->resolver);\n    }\n}\n\n\n\nstatic void\nrdns_test_a (struct rdns_resolver *resolver)\n{\n    char *names[] = {\n            \"baidu.com\",\n            \"163.com\",\n            \"qq.com\",\n            NULL\n    };\n    char **cur;\n\n    for (cur = names; *cur != NULL; cur ++) {\n        \/\/ \u589e\u52a0\u68c0\u6d4b\u7ed3\u679c\u56de\u8c03\u51fd\u6570\n        \/\/ \u53c2\u6570\uff1a DNS\u89e3\u6790\u53e5\u67c4\u3001\u89e3\u6790\u7ed3\u679c\u56de\u8c03\u51fd\u6570\u3001\u56de\u8c03\u51fd\u6570\u53c2\u6570\u3001DNS\u67e5\u8be2\u8d85\u65f6\u65f6\u95f4\uff08\u5355\u4f4d\uff1a\u79d2\uff09\u3001\u5931\u8d25\u91cd\u590d\u67e5\u8be2\u6b21\u6570\u3001\u603b\u5171\u8981\u505a\u591a\u5c11\u4e2a\u67e5\u8be2\u3001\u8bf7\u6c42\u503c\u3001\u7c7b\u578b\u3001\u8bf7\u6c42\u503c\u3001\u7c7b\u578b...\n        \/\/ \u5751\uff1a\u5f53\u6dfb\u52a0\u591a\u4e2a\u67e5\u8be2\u7684\u65f6\u5019\uff0c\u4f1a\u8d85\u65f6\uff0c\u6240\u4ee5\u8fd9\u91cc\u4e00\u4e2a\u4e00\u4e2a\u6dfb\u52a0\n        rdns_make_request_full (resolver, rdns_regress_callback, NULL, 5.0, 2, 1, *cur, RDNS_REQUEST_A );\n        remain_tests++ ;\n        rdns_make_request_full (resolver, rdns_regress_callback, NULL, 5.0, 2, 1, *cur, RDNS_REQUEST_MX);\n        remain_tests++ ;\n        rdns_make_request_full (resolver, rdns_regress_callback, NULL, 5.0, 2, 1, *cur, RDNS_REQUEST_TXT);\n        remain_tests++ ;\n    }\n}\n\nint\nmain(int argc, char **argv)\n{\n    struct rdns_resolver *resolver_ev;\n    struct ev_loop *loop;\n\n    \/\/ \u521b\u5efa libev \u76d1\u542c\u8f6e\u8be2 loop \u53e5\u67c4\n    loop = ev_default_loop (0);\n\n    \/\/ \u521b\u5efa DNS \u89e3\u6790\u5668\u7ed3\u6784\n    resolver_ev = rdns_resolver_new ();\n\n    \/\/ \u7ed1\u5b9a libev \u7684 loop \u548c resolver_ev\n    rdns_bind_libev (resolver_ev, loop);\n\n    \/\/ \u589e\u52a0 DNS\u670d\u52a1\u5668\u4fe1\u606f : argv[1] IP\u5730\u5740  argv[2] \u7aef\u53e3\u53f7\n    rdns_resolver_add_server (resolver_ev, argv[1], strtoul (argv[2], NULL, 10), 0, 8);\n\n    \/\/ \u521d\u59cb\u5316 DNS \u89e3\u6790\u5668\n    rdns_resolver_init (resolver_ev);\n\n    \/\/ \u6dfb\u52a0\u6d4b\u8bd5\n    rdns_test_a (resolver_ev);\n\n    ev_loop (loop, 0);\n\n    return 0;\n}<\/code><\/pre>\n\n\n\n
<\/div>\n\n\n\n
\u7f16\u8bd1\u6d4b\u8bd5<\/p>\n\n\n\n
<\/div>\n\n\n\n
\u6307\u4ee4\uff1agcc -Wall -o test trdns.c -lev -lrdns<\/code><\/p>\n\n\n\n
<\/div>\n\n\n\n
\"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"
librdns\u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u5f02\u6b65\u591a\u529f\u80fd\u63d2\u4ef6\u5f0f\u7684\u89e3\u6790\u5668\uff0c\u7528\u4e8eDNS\u89e3\u6790\u3002<\/p>\n
\u6e90\u4ee3\u7801\u5730\u5740\uff1ahttps:\/\/github.com\/vstakhov\/librdns<\/p>\n
librdns\u4f7f\u7528libev\u548clibevent\u7684\u65b9\u5f0f\u96c6\u6210\uff0c\u6765\u5b9e\u73b0\u5f02\u6b65\u64cd\u4f5c\u3002<\/p>\n
\u5173\u4e8eDNS\u76f8\u5173\u77e5\u8bc6\u53c2\u770b\u5f80\u671f\u6587\u7ae0\uff1ahttps:\/\/www.madbull.site\/?p=1719<\/p>\n
\u5173\u4e8elibev\u7684\u4ecb\u7ecd\u53c2\u770b\u5f80\u671f\u6587\u7ae0\uff1ahttps:\/\/www.madbull.site\/?p=1732<\/p>\n","protected":false},"author":1,"featured_media":559,"comment_status":"open","ping_status":"open","sticky":false,"template":"single-with-sidebar","format":"standard","meta":{"footnotes":""},"categories":[156,154],"tags":[554,566,577,575],"class_list":["post-1737","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-c-c","category-154","tag-dns","tag-libev","tag-libevent","tag-librdns"],"_links":{"self":[{"href":"https:\/\/www.madbull.site\/index.php?rest_route=\/wp\/v2\/posts\/1737","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.madbull.site\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.madbull.site\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.madbull.site\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.madbull.site\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1737"}],"version-history":[{"count":2,"href":"https:\/\/www.madbull.site\/index.php?rest_route=\/wp\/v2\/posts\/1737\/revisions"}],"predecessor-version":[{"id":1745,"href":"https:\/\/www.madbull.site\/index.php?rest_route=\/wp\/v2\/posts\/1737\/revisions\/1745"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.madbull.site\/index.php?rest_route=\/wp\/v2\/media\/559"}],"wp:attachment":[{"href":"https:\/\/www.madbull.site\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1737"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.madbull.site\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1737"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.madbull.site\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1737"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}