利用Socket 编写SMTP 发送邮件程序

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1. #include <winsock.h>   
2. #include <stdio.h>   
3. #include <string>   
4. #include <iostream>   
5. using namespace std;  
6. #define WSWENS MAKEWORD(2,0)   
7. int main()  
8. {  
9.     sockaddr_in sin;  
10.     WSADATA wsadata;  
11.     if(WSAStartup(WSWENS, &wsadata) !=0)  
12.         cout<<"startup failed"<<endl;  
13.       
14.     SOCKET s = socket(PF_INET,SOCK_STREAM,0);  
15.     memset(&sin, 0, sizeof(sin));  
16.     sin.sin_family = AF_INET;  
17.     sin.sin_port = htons(25);  
18.     hostent* hptr = gethostbyname("smtp.sina.com");  
19.     memcpy(&sin.sin_addr.S_un.S_addr, hptr->h_addr_list[0], hptr->h_length);  
20.     printf("IP of smpt.sina.com is : %d:%d:%d:%d",  
21.         sin.sin_addr.S_un.S_un_b.s_b1,  
22.         sin.sin_addr.S_un.S_un_b.s_b2,  
23.         sin.sin_addr.S_un.S_un_b.s_b3,  
24.         sin.sin_addr.S_un.S_un_b.s_b4);  
25.       
26.     cout << endl;  
27.     if(connect(s, (sockaddr*)&sin, sizeof(sin)))  
28.     {  
29.         cout << "connect failed" << endl;  
30.         exit(0);  
31.     }  
32.     else  
33.     {  
34.         cout << "connect success" << endl;  
35.     }  
36.       
37.     char bufferresv[10240];  
38.     int len = recv(s, bufferresv, 10240, 0);  
39.     bufferresv[len]=0;  
40.     printf("%s",bufferresv);  
41.     cout << endl;  
42.     // send "helo ehlo"   
43.     char bufferHello[] = "helo ehlo/r/n";  
44.     cout << "helo ehlo..." << endl;  
45.     send(s, bufferHello, strlen(bufferHello), 0);  
46.     len = recv(s, bufferresv, 10240, 0);  
47.     bufferresv[len]=0;  
48.     printf("%s",bufferresv);  
49.     cout << endl;  
50.     // send "auth login"   
51.     char bufferLogin[] = "auth login/r/n";  
52.     cout << "auth login..." << endl;  
53.     send(s, bufferLogin, strlen(bufferLogin),0);  
54.     len = recv(s, bufferresv, 10240, 0);  
55.       
56.     bufferresv[len]=0;  
57.     printf("%s",bufferresv);  
58.       
59.     cout << endl;  
60.     // send "username" send "psw"   
61.     char bufferUserName[] = "c3VubnlrYWhv/r/n";  
62.     char bufferpsw[] = "MjAwNzE2MTA0MDk=/r/n";  
63.       
64.     cout << "input username...." << endl;  
65.     send(s,bufferUserName,strlen(bufferUserName),0);  
66.     len = recv(s, bufferresv, 10240, 0);  
67.     bufferresv[len]=0;  
68.     printf("%s",bufferresv);  
69.     cout << endl;  
70.     cout << "input password..." << endl;  
71.     send(s,bufferpsw,strlen(bufferpsw),0);  
72.     len = recv(s, bufferresv, 10240, 0);  
73.     bufferresv[len]=0;  
74.     printf("%s",bufferresv);  
75.     cout << endl;  
76.     // mail from:<sunnykaho@sina.com>   
77.     char bufferMailFrom[] = "mail from:<sunnykaho@sina.com>/r/n";  
78.     cout << "mail from:<sunnykaho@sina.com>..." << endl;  
79.     send(s, bufferMailFrom, strlen(bufferMailFrom), 0);  
80.     len = recv(s, bufferresv, 10240, 0);  
81.     bufferresv[len]=0;  
82.     printf("%s",bufferresv);  
83.     cout << endl;  
84.     // rcpt to:<kaholi@qq.com>   
85.     char bufferRcptTo[] = "rcpt to:<kaholi@qq.com>/r/n";  
86.     cout << "rcpt to:<kaholi@qq.com>..." << endl;  
87.     send(s, bufferRcptTo, strlen(bufferRcptTo), 0);  
88.     len = recv(s, bufferresv, 10240, 0);  
89.     bufferresv[len]=0;  
90.     printf("%s",bufferresv);  
91.     cout << endl;  
92.       
93.     // data   
94.     char bufferData[] = "data/r/n";  
95.     cout << "data..." << endl;  
96.     send(s, bufferData,strlen(bufferData), 0);  
97.     len = recv(s, bufferresv, 10240, 0);  
98.     bufferresv[len]=0;  
99.     printf("%s",bufferresv);  
100.     cout << endl;  
101.     //    
102.     char bufferTo[] = "to:kaholi@qq.com/r/n";  
103.     char bufferFrom[] = "from:sunnykaho@sina.com/r/n";  
104.     cout << "to:kaholi@qq.com... " << endl;  
105.     send(s, bufferTo, strlen(bufferTo),0);  
106.     cout << "from:sunnykaho@sina.com..." << endl;  
107.     send(s, bufferFrom, strlen(bufferFrom), 0);  
108.       
109.     char bufferSubject[] = "subject:hello from kaho/r/n";  
110.     cout << "subject:hello from kaho..." << endl;  
111.     send(s, bufferSubject, strlen(bufferSubject), 0);  
112.     char bufferPoint[] = "./r/n";  
113.     send(s, bufferPoint, strlen(bufferPoint), 0);  
114.     len = recv(s, bufferresv, 10240, 0);  
115.     bufferresv[len]=0;  
116.     printf("%s",bufferresv);  
117.     cout << endl;  
118. }  

#include <winsock.h> #include <stdio.h> #include <string> #include <iostream> using namespace std; #define WSWENS MAKEWORD(2,0) int main() { sockaddr_in sin; WSADATA wsadata; if(WSAStartup(WSWENS, &wsadata) !=0) cout<<"startup failed"<<endl; SOCKET s = socket(PF_INET,SOCK_STREAM,0); memset(&sin, 0, sizeof(sin)); sin.sin_family = AF_INET; sin.sin_port = htons(25); hostent* hptr = gethostbyname("smtp.sina.com"); memcpy(&sin.sin_addr.S_un.S_addr, hptr->h_addr_list[0], hptr->h_length); printf("IP of smpt.sina.com is : %d:%d:%d:%d", sin.sin_addr.S_un.S_un_b.s_b1, sin.sin_addr.S_un.S_un_b.s_b2, sin.sin_addr.S_un.S_un_b.s_b3, sin.sin_addr.S_un.S_un_b.s_b4); cout << endl; if(connect(s, (sockaddr*)&sin, sizeof(sin))) { cout << "connect failed" << endl; exit(0); } else { cout << "connect success" << endl; } char bufferresv[10240]; int len = recv(s, bufferresv, 10240, 0); bufferresv[len]=0; printf("%s",bufferresv); cout << endl; // send "helo ehlo" char bufferHello[] = "helo ehlo/r/n"; cout << "helo ehlo..." << endl; send(s, bufferHello, strlen(bufferHello), 0); len = recv(s, bufferresv, 10240, 0); bufferresv[len]=0; printf("%s",bufferresv); cout << endl; // send "auth login" char bufferLogin[] = "auth login/r/n"; cout << "auth login..." << endl; send(s, bufferLogin, strlen(bufferLogin),0); len = recv(s, bufferresv, 10240, 0); bufferresv[len]=0; printf("%s",bufferresv); cout << endl; // send "username" send "psw" char bufferUserName[] = "c3VubnlrYWhv/r/n"; char bufferpsw[] = "MjAwNzE2MTA0MDk=/r/n"; cout << "input username...." << endl; send(s,bufferUserName,strlen(bufferUserName),0); len = recv(s, bufferresv, 10240, 0); bufferresv[len]=0; printf("%s",bufferresv); cout << endl; cout << "input password..." << endl; send(s,bufferpsw,strlen(bufferpsw),0); len = recv(s, bufferresv, 10240, 0); bufferresv[len]=0; printf("%s",bufferresv); cout << endl; // mail from:<sunnykaho@sina.com> char bufferMailFrom[] = "mail from:<sunnykaho@sina.com>/r/n"; cout << "mail from:<sunnykaho@sina.com>..." << endl; send(s, bufferMailFrom, strlen(bufferMailFrom), 0); len = recv(s, bufferresv, 10240, 0); bufferresv[len]=0; printf("%s",bufferresv); cout << endl; // rcpt to:<kaholi@qq.com> char bufferRcptTo[] = "rcpt to:<kaholi@qq.com>/r/n"; cout << "rcpt to:<kaholi@qq.com>..." << endl; send(s, bufferRcptTo, strlen(bufferRcptTo), 0); len = recv(s, bufferresv, 10240, 0); bufferresv[len]=0; printf("%s",bufferresv); cout << endl; // data char bufferData[] = "data/r/n"; cout << "data..." << endl; send(s, bufferData,strlen(bufferData), 0); len = recv(s, bufferresv, 10240, 0); bufferresv[len]=0; printf("%s",bufferresv); cout << endl; // char bufferTo[] = "to:kaholi@qq.com/r/n"; char bufferFrom[] = "from:sunnykaho@sina.com/r/n"; cout << "to:kaholi@qq.com... " << endl; send(s, bufferTo, strlen(bufferTo),0); cout << "from:sunnykaho@sina.com..." << endl; send(s, bufferFrom, strlen(bufferFrom), 0); char bufferSubject[] = "subject:hello from kaho/r/n"; cout << "subject:hello from kaho..." << endl; send(s, bufferSubject, strlen(bufferSubject), 0); char bufferPoint[] = "./r/n"; send(s, bufferPoint, strlen(bufferPoint), 0); len = recv(s, bufferresv, 10240, 0); bufferresv[len]=0; printf("%s",bufferresv); cout << endl; }  

 

以上代码感谢超哥像春哥般的光环照耀下做出来的...

 

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原文网址：http://blog.youkuaiyun.com/sunnykaho/archive/2009/12/02/4927178.aspx