From b2216cf224efdcd71127cdb9cd73b90e7b681332 Mon Sep 17 00:00:00 2001
From: Max Lv <max.c.lv@gmail.com>
Date: Sat, 6 Apr 2013 20:36:24 +0800
Subject: [PATCH] remove res_search res_query

---
 libasyncns/asyncns.c | 88 --------------------------------------------
 libasyncns/asyncns.h | 21 -----------
 2 files changed, 109 deletions(-)

diff --git a/libasyncns/asyncns.c b/libasyncns/asyncns.c
index 3b05aa29..8163c1f0 100644
--- a/libasyncns/asyncns.c
+++ b/libasyncns/asyncns.c
@@ -67,9 +67,6 @@ typedef enum {
     RESPONSE_ADDRINFO,
     REQUEST_NAMEINFO,
     RESPONSE_NAMEINFO,
-    REQUEST_RES_QUERY,
-    REQUEST_RES_SEARCH,
-    RESPONSE_RES,
     REQUEST_TERMINATE,
     RESPONSE_DIED
 } query_type_t;
@@ -501,28 +498,6 @@ static int send_nameinfo_reply(int out_fd, unsigned id, int ret, const char *hos
     return send(out_fd, resp, resp->header.length, MSG_NOSIGNAL);
 }
 
-static int send_res_reply(int out_fd, unsigned id, const unsigned char *answer, int ret, int _errno, int _h_errno) {
-    res_response_t data[BUFSIZE/sizeof(res_response_t) + 1];
-    res_response_t *resp = data;
-
-    assert(out_fd >= 0);
-
-    memset(data, 0, sizeof(data));
-    resp->header.type = RESPONSE_RES;
-    resp->header.id = id;
-    resp->header.length = sizeof(res_response_t) + (ret < 0 ? 0 : ret);
-    resp->ret = ret;
-    resp->_errno = _errno;
-    resp->_h_errno = _h_errno;
-
-    assert(sizeof(data) >= resp->header.length);
-
-    if (ret > 0)
-        memcpy((uint8_t *)data + sizeof(res_response_t), answer, ret);
-
-    return send(out_fd, resp, resp->header.length, MSG_NOSIGNAL);
-}
-
 static int handle_request(int out_fd, const packet_t *packet, size_t length) {
     const rheader_t *req;
     assert(out_fd >= 0);
@@ -1032,28 +1007,6 @@ static int handle_response(asyncns_t *asyncns, const packet_t *packet, size_t le
             break;
         }
 
-        case RESPONSE_RES: {
-            const res_response_t *res_resp = &packet->res_response;
-
-            assert(length >= sizeof(res_response_t));
-            assert(q->type == REQUEST_RES_QUERY || q->type == REQUEST_RES_SEARCH);
-
-            q->ret = res_resp->ret;
-            q->_errno = res_resp->_errno;
-            q->_h_errno = res_resp->_h_errno;
-
-            if (res_resp->ret >= 0)  {
-                if (!(q->serv = malloc(res_resp->ret))) {
-                    q->ret = -1;
-                    q->_errno = ENOMEM;
-                } else
-                    memcpy(q->serv, (const char *)resp + sizeof(res_response_t), res_resp->ret);
-            }
-
-            complete_query(asyncns, q);
-            break;
-        }
-
         default:
             ;
     }
@@ -1356,47 +1309,6 @@ fail:
     return NULL;
 }
 
-asyncns_query_t* asyncns_res_query(asyncns_t *asyncns, const char *dname, int class, int type) {
-    return asyncns_res(asyncns, REQUEST_RES_QUERY, dname, class, type);
-}
-
-asyncns_query_t* asyncns_res_search(asyncns_t *asyncns, const char *dname, int class, int type) {
-    return asyncns_res(asyncns, REQUEST_RES_SEARCH, dname, class, type);
-}
-
-int asyncns_res_done(asyncns_t *asyncns, asyncns_query_t* q, unsigned char **answer) {
-    int ret;
-    assert(asyncns);
-    assert(q);
-    assert(q->asyncns == asyncns);
-    assert(q->type == REQUEST_RES_QUERY || q->type == REQUEST_RES_SEARCH);
-    assert(answer);
-
-    if (asyncns->dead) {
-        errno = ECHILD;
-        return -ECHILD;
-    }
-
-    if (!q->done) {
-        errno = EAGAIN;
-        return -EAGAIN;
-    }
-
-    *answer = (unsigned char *)q->serv;
-    q->serv = NULL;
-
-    ret = q->ret;
-
-    if (ret < 0) {
-        errno = q->_errno;
-        h_errno = q->_h_errno;
-    }
-
-    asyncns_cancel(asyncns, q);
-
-    return ret < 0 ? -errno : ret;
-}
-
 asyncns_query_t* asyncns_getnext(asyncns_t *asyncns) {
     assert(asyncns);
     return asyncns->done_head;
diff --git a/libasyncns/asyncns.h b/libasyncns/asyncns.h
index 9f2cbd6f..4b78767f 100644
--- a/libasyncns/asyncns.h
+++ b/libasyncns/asyncns.h
@@ -103,27 +103,6 @@ asyncns_query_t* asyncns_getnameinfo(asyncns_t *asyncns, const struct sockaddr *
  * returned. */
 int asyncns_getnameinfo_done(asyncns_t *asyncns, asyncns_query_t* q, char *ret_host, size_t hostlen, char *ret_serv, size_t servlen);
 
-/** Issue a resolver query on the specified session. The arguments are
- * compatible with the ones of libc's res_query(3). The function returns a new
- * query object. When the query is completed you may retrieve the results using
- * asyncns_res_done().  */
-asyncns_query_t* asyncns_res_query(asyncns_t *asyncns, const char *dname, int class, int type);
-
-/** Issue an resolver query on the specified session. The arguments are
- * compatible with the ones of libc's res_search(3). The function returns a new
- * query object. When the query is completed you may retrieve the results using
- * asyncns_res_done().  */
-asyncns_query_t* asyncns_res_search(asyncns_t *asyncns, const char *dname, int class, int type);
-
-/** Retrieve the results of a preceding asyncns_res_query() or
- * asyncns_res_search call.  The query object q is destroyed by this
- * call and may not be used any further. Returns a pointer to the
- * answer of the res_query call. If the query is not completed yet
- * -EAGAIN is returned, on failure -errno is returned, otherwise the
- * length of answer is returned. Make sure to free the answer is a
- * call to asyncns_freeanswer(). */
-int asyncns_res_done(asyncns_t *asyncns, asyncns_query_t* q, unsigned char **answer);
-
 /** Return the next completed query object. If no query has been
  * completed yet, return NULL. Please note that you need to run
  * asyncns_wait() before this function will return sensible data.  */