发送@消息

README.md

@@ -259,6 +259,47 @@ vcpkg
 
 
 
+#### 3.发送@文本消息**
+###### 接口功能
+> 发送@文本消息
+
+###### 接口地址
+> [/api/?type=3](/api/?type=3)
+
+###### HTTP请求方式
+> POST  JSON
+
+###### 请求参数
+|参数|必选|类型|说明|
+|---|---|---|---|
+|chatRoomId |true |string| 群id |
+|msg|true |string|消息文本内容|  
+|wxids |true |string| @的用户微信id用,号分隔， @所有人 传 notify@all ，区分大小写 |  
+
+###### 返回字段
+|返回字段|字段类型|说明                              |
+|---|---|---|
+|code|int|返回状态,不为0成功, 0失败|
+|result|string|成功提示|
+
+
+###### 接口示例
+
+入参：
+``` javascript
+{
+    "chatRoomId": "123333@chatroom",
+    "wxids":"notify@all,wxid_122221",
+    "msg": "12333"
+}
+```
+响应：
+``` javascript
+{"code":345686720,"result":"OK"}
+```
+
+
+
 #### 5.发送图片消息**
 ###### 接口功能
 > 发送图片消息

src/api.cc

@@ -240,6 +240,16 @@ void api_handle(mg_http_message *hm, struct mg_connection *c, string &ret) {
       break;
     }
     case WECHAT_MSG_SEND_AT: {
+      wstring chat_room_id = get_http_req_param(hm, j_param, "chatRoomId", is_post);
+      vector<wstring> wxids = get_http_param_array(hm, j_param, "wxids", is_post);
+      wstring msg = get_http_req_param(hm, j_param, "msg", is_post);
+      vector<wchar_t *> wxid_list;
+      for (unsigned int i = 0; i < wxids.size(); i++){
+        wxid_list.push_back(WS2LW(wxids[i]));
+      }
+      int success = SendAtText(WS2LW(chat_room_id), wxid_list.data(), wxid_list.size(),WS2LW(msg));
+      json ret_data = {{"code", success}, {"result", "OK"}};
+      ret = ret_data.dump();
       break;
     }
     case WECHAT_MSG_SEND_CARD: {

src/send_text.cc

@@ -4,12 +4,14 @@
 
 #include "common.h"
 #include "wechat_data.h"
+#include "contact.h"
 
 #define WX_SEND_TEXT_OFFSET 0xc71a60
 
 #define WX_SEND_MESSAGE_MGR_OFFSET 0x706d30
 
 #define WX_FREE_CHAT_MSG_OFFSET 0x6f4ea0
+using namespace std;
 /// @brief 发生文本消息
 /// @param wxid wxid
 /// @param msg  文本消息
@@ -46,3 +48,71 @@ int  SendText(wchar_t* wxid, wchar_t* msg) {
   }
   return success;
 }
+
+
+
+int SendAtText(wchar_t* chat_room_id,wchar_t** wxids,int len,wchar_t* msg){
+  int success = -1;
+  WeChatString  * at_users = new WeChatString[len+1];
+  wstring at_msg = L"";
+  int number =0;
+  for (int i = 0; i < len; i++) {
+    wstring nickname;
+    if (!lstrcmpiW((wchar_t *)wxids[i], (wchar_t *)L"notify@all")) {
+      nickname = L"ËùÓÐÈË";
+    } else {
+      nickname = GetContactOrChatRoomNickname(wxids[i]);
+    }
+    if (nickname.length() == 0) {
+      continue;
+    }
+
+    WeChatString temp = {0};
+    temp.ptr = (wchar_t *)wxids[i];
+    temp.length = wcslen((wchar_t *)wxids[i]);
+    temp.max_length = wcslen((wchar_t *)wxids[i]) * 2;
+    memcpy(&at_users[number], &temp, sizeof(WeChatString));
+    at_msg = at_msg + L"@" + nickname + L" ";
+    number++;
+  }
+  if (number < 1){
+    return success;
+  }
+  wstring origin(msg);
+  at_msg += origin;
+  AtInner at_list = {0};
+  at_list.start = (DWORD)at_users;
+  at_list.finsh = (DWORD)&at_users[number];
+  at_list.end = (DWORD)&at_users[number];
+  WeChatString to_user(chat_room_id);
+  WeChatString text_msg((wchar_t *)at_msg.c_str());
+  wchar_t **msg_pptr = &text_msg.ptr;
+  
+  DWORD base = GetWeChatWinBase();
+  DWORD send_message_mgr_addr = base + WX_SEND_MESSAGE_MGR_OFFSET;
+  DWORD send_text_msg_addr = base + WX_SEND_TEXT_OFFSET;
+  DWORD free_chat_msg_addr = base + WX_FREE_CHAT_MSG_OFFSET;
+  char chat_msg[0x2C4] ={0};
+   
+  __asm{
+      PUSHAD
+      CALL       send_message_mgr_addr
+      PUSH       0x0
+      PUSH       0x0
+      PUSH       0x0
+      PUSH       0x1
+      LEA        EAX,at_list
+      PUSH       EAX
+      MOV        EAX,msg_pptr
+      PUSH       EAX
+      LEA        EDX,to_user
+      LEA        ECX,chat_msg
+      CALL       send_text_msg_addr 
+      MOV        success,EAX
+      ADD        ESP,0x18
+      LEA        ECX,chat_msg        
+      CALL       free_chat_msg_addr
+      POPAD
+  }
+  return success;
+}

src/send_text.h

@@ -2,5 +2,5 @@
 #define SEND_TEXT_H_
 
 int SendText(wchar_t* wxid, wchar_t* msg);
-
+int SendAtText(wchar_t* chat_room_id,wchar_t** wxids,int len,wchar_t* msg);
 #endif

src/wechat_data.h

@@ -180,4 +180,10 @@ struct UserInfo {
   DWORD sex;
   BOOL over;
 };
+
+struct AtInner{
+  DWORD start;
+  DWORD finsh;
+  DWORD end;
+};
 #endif