【C++】【網絡】利用Socket 編寫SMTP 發送郵件程序

#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:<[e-mail]> char bufferMailFrom[] = "mail from:<[e-mail]>/r/n"; cout << "mail from:<[e-mail]>..." << endl; send(s, bufferMailFrom, strlen(bufferMailFrom), 0); len = recv(s, bufferresv, 10240, 0); bufferresv[len]=0; printf("%s",bufferresv); cout << endl; // rcpt to:<[e-mail]> char bufferRcptTo[] = "rcpt to:<[e-mail]>/r/n"; cout << "rcpt to:<[e-mail]>..." << 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:[e-mail]/r/n"; char bufferFrom[] = "from:[e-mail]/r/n"; cout << "to:[e-mail]... " << endl; send(s, bufferTo, strlen(bufferTo),0); cout << "from:[e-mail]..." << 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; }  

 

以上代碼感謝超哥像春哥般的光環照耀下做出來的...

 

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原文網址：http://blog.csdn.net/sunnykaho/archive/2009/12/02/4927178.aspx