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救人一命胜造七极浮屠！！！请问关于smtp client的问题
我想通过smtp发email,在C程序中走过DATA后，就该注明Header了，可是这个Header有哪些内容，该怎么写，哪位大哥能指点一下，或有一个列子？先谢谢了。 sdupoplar 回复于：2003-10-16 20:58:49 你上个问题中已给你了个C++的简单发邮件程序，你把程序中传输的数
我想通过smtp发email, 在C 程序中走过DATA后，就该注明Header了，可是这个Header有哪些内容，该怎么写，哪位大哥能指点一下，或有一个列子？先谢谢了。
| sdupoplar 回复于：2003-10-16 20:58:49 |
| 你上个问题中已给你了个C++的简单发邮件程序，你把程序中传输的数据输出一看就明白了。我有个C的程序，不过当时只是测试一下可不可以，不可以直接用的，数据存放时只是直接用了数组，数据长了会越界的，没有错误检查，不过可以发送邮件，你如果需要的话我可以给你贴出来。 |
| littlescorpian 回复于：2003-10-17 07:19:47 |
| 需要需要。请贴出C程序。谢谢！ |
| sdupoplar 回复于：2003-10-17 08:20:35 |
| 不太好读，你看看吧。
[code:1:0a42cdba85]#include <stdio.h> #include <winsock2.h> #include <time.h> #define PORT 25 #define BUFFERLEN 1024 #define TEMPLEN 1024 int WaitForRead( SOCKET socket, int seconds ); int WaitForWrite( SOCKET socket, int seconds ); int MyRecv( SOCKET socket, char *buffer, int len ); int MySend( SOCKET socket, char *buffer, int len ); //char* decode( const char* in_str, char* out_str); char* encode( const char* in_str, char *out_str ); int main( void ) { SOCKET srvrSocket; struct sockaddr_in srvrAddr; WORD ver; WSAData data; int z, len; char buffer[BUFFERLEN]; char temp[TEMPLEN]; char hostname[] = "smtp.163.com"; char username[] = "***"; char password[] = "***"; char sendname[] = "senderyjf"; char recvname[] = "recvyjf"; char subject[] = "Test mail"; char sendaddr[] = "****@163.com"; char recvaddr[] = "*****@163.com"; char plaincontent[] = "Test content !!!"; char filecontent[] = "d:\\test.txt"; char htmcontent[] = "<a href='http://morningspace.51.net'>click me</a>"; ver = MAKEWORD( 2, 0 ); z = WSAStartup( ver, &data ); if ( z < 0 ) { fprintf( stderr, "WSAStartup() error!\n" ); return 1; } struct hostent* host = gethostbyname( hostname ); if (host == 0) { fprintf(stderr,"gethostbyname() error!\n"); } //srvrSocket = socket( PF_INET, SOCK_STREAM, IPPROTO_TCP ); srvrSocket = socket( PF_INET, SOCK_STREAM, 0 ); if ( srvrSocket < 0 ) { fprintf( stderr, "Alloc socket handle failed!\n" ); return 1; } memset( &srvrAddr, 0, sizeof srvrAddr ); srvrAddr.sin_family = AF_INET; srvrAddr.sin_port = htons(PORT); srvrAddr.sin_addr.s_addr = *(ULONG *)host->h_addr ; if ( srvrAddr.sin_addr.s_addr == INADDR_NONE ) { fprintf( stderr, "inet_addr() error!\n" ); return 1; } len = sizeof srvrAddr; z = connect( srvrSocket, ( struct sockaddr * ) &srvrAddr, len ); if ( z < 0 ) { fprintf( stderr, "connet() error!\n" ); return 1; } z = MyRecv( srvrSocket, buffer, BUFFERLEN ); if ( z < 0 ) return 1; if ( strncmp( buffer, "220", 3 ) != 0 ) return 1; //hello if ( gethostname( temp, TEMPLEN ) != 0 ) { fprintf( stderr, "gethostname() error"); } sprintf( buffer, "HELO %s\r\n", temp ); z = MySend( srvrSocket, buffer, strlen( buffer ) ); if ( z < 0 ) return 1; z = MyRecv( srvrSocket, buffer, BUFFERLEN ); if ( z < 0 ) return 1; if ( strncmp( buffer, "250", 3 ) != 0 ) return 1; //login strcpy( buffer, "AUTH LOGIN\r\n" ); z = MySend( srvrSocket, buffer, strlen( buffer ) ); if ( z < 0 ) return 1; z = MyRecv( srvrSocket, buffer, BUFFERLEN ); if ( z < 0 ) return 1; if ( strncmp( buffer, "334", 3 ) != 0 ) return 1; sprintf( buffer, "%s\r\n", encode( username, temp ) ); z = MySend( srvrSocket, buffer, strlen( buffer ) ); if ( z < 0 ) return 1; z = MyRecv( srvrSocket, buffer, BUFFERLEN ); if ( z < 0 ) return 1; if ( strncmp( buffer, "334", 3 ) != 0 ) return 1; sprintf( buffer, "%s\r\n", encode( password, temp ) ); z = MySend( srvrSocket, buffer, strlen( buffer ) ); if ( z < 0 ) return 1; z = MyRecv( srvrSocket, buffer, BUFFERLEN ); if ( z < 0 ) return 1; if ( strncmp( buffer, "235", 3 ) != 0 ) return 1; //send header sprintf( buffer, "MAIL FROM: <%s>\r\n", sendaddr ); z = MySend( srvrSocket, buffer, strlen( buffer ) ); if ( z < 0 ) return 1; z = MyRecv( srvrSocket, buffer, BUFFERLEN ); if ( z < 0 ) return 1; if ( strncmp( buffer, "250", 3 ) != 0 ) return 1; sprintf( buffer, "RCPT TO: <%s>\r\n", recvaddr ); z = MySend( srvrSocket, buffer, strlen( buffer ) ); if ( z < 0 ) return 1; z = MyRecv( srvrSocket, buffer, BUFFERLEN ); if ( z < 0 ) return 1; if ( strncmp( buffer, "250", 3 ) != 0 ) return 1; /////////////////////////////////////////////////////////// strcpy( buffer, "DATA\r\n" ); z = MySend( srvrSocket, buffer, strlen( buffer ) ); if ( z < 0 ) return 1; z = MyRecv( srvrSocket, buffer, BUFFERLEN ); if ( z < 0 ) return 1; if ( strncmp( buffer, "354", 3 ) != 0 ) return 1; sprintf( buffer, "From: \"%s\" <%s>\r\n", sendname, sendaddr ); sprintf( temp, "To: \"%s\" <%s>\r\n", recvname, recvaddr ); strcat( buffer, temp ); time_t seconds; time( &seconds ); strftime( temp, TEMPLEN, "%a, %d %b %y %H:%M:%S", localtime(&seconds)); strcat( buffer, "Date: " ); strcat( buffer, temp ); strcat( buffer, "\r\n" ); sprintf( temp, "Subject: %s\r\n", subject ); strcat( buffer, temp ); strcat( buffer, "X-Mailer: SMailer\r\n" ); strcat( buffer, "X-Priority: 3\r\n" ); strcat( buffer, "MIME-Version: 1.0\r\n" ); strcat( buffer, "Content-type: multipart/mixed; boundary=\"" ); strcat( buffer, "#BOUNDARY#\"\r\n\r\n" ); z = MySend( srvrSocket, buffer, strlen( buffer ) ); if ( z < 0 ) return 1; //plainttxt strcpy( buffer, "--#BOUNDARY#\r\n" ); strcat( buffer, "Content-Type: text/plain; charset=gb2312\r\n" ); strcat( buffer, "Content-Transfer-Encoding: 8bit\r\n\r\n" ); z = MySend( srvrSocket, buffer, strlen( buffer ) ); if ( z < 0 ) return 1; strcpy( buffer, plaincontent ); strcat( buffer, "\r\n\r\n" ); z = MySend( srvrSocket, buffer, strlen( buffer ) ); if ( z < 0 ) return 1; //htm strcpy( buffer, "--#BOUNDARY#\r\n" ); strcat( buffer, "Content-Type: text/html; charset=gb2312\r\n" ); strcat( buffer, "Content-Transfer-Encoding: 8bit\r\n\r\n" ); z = MySend( srvrSocket, buffer, strlen( buffer ) ); if ( z < 0 ) return 1; strcpy( buffer, htmcontent ); strcat( buffer, "\r\n\r\n" ); z = MySend( srvrSocket, buffer, strlen( buffer ) ); if ( z < 0 ) return 1; //file char drive[_MAX_DRIVE]; char direc[_MAX_DIR]; char fname[_MAX_FNAME]; char ext[_MAX_EXT]; char filename[_MAX_FNAME+_MAX_EXT]; _splitpath(filecontent, drive, direc, fname, ext); strcpy( filename, fname ); strcat( filename, ext ); strcpy( buffer, "--#BOUNDARY#\r\n" ); strcat( buffer, "application/octet-stream; name=" ); strcat( buffer, filename ); strcat( buffer, "\r\n" ); strcat( buffer, "Content-Disposition: attachment; filename=" ); strcat( buffer, filename ); strcat( buffer, "\r\n" ); strcat( buffer, "Content-Transfer-Encoding: base64\r\n\r\n" ); z = MySend( srvrSocket, buffer, strlen( buffer ) ); if ( z < 0 ) return 1; strcpy( buffer, encode( filecontent, temp ) ); strcat( buffer, "\r\n\r\n" ); z = MySend( srvrSocket, buffer, strlen( buffer ) ); if ( z < 0 ) return 1; //end data strcpy( buffer, "\r\n--#BOUNDARY#--\r\n.\r\n" ); z = MySend( srvrSocket, buffer, strlen( buffer ) ); if ( z < 0 ) return 1; z = MyRecv( srvrSocket, buffer, BUFFERLEN ); if ( z < 0 ) return 1; if ( strncmp( buffer, "250", 3 ) != 0 ) return 1; //quit strcpy( buffer, "QUIT\r\n" ); z = MySend( srvrSocket, buffer, strlen( buffer ) ); if ( z < 0 ) return 1; z = MyRecv( srvrSocket, buffer, BUFFERLEN ); if ( z < 0 ) return 1; if ( strncmp( buffer, "221", 3 ) != 0 ) return 1; fprintf( stdout, "Suclearcase/" target="_blank" >ccessful end!!!\n" ); closesocket( srvrSocket ); WSACleanup(); return 0; } char* encode( const char* in_str, char *out_str ) { const char base64_encode_chars[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; unsigned char c1, c2, c3; int i = 0; int j = 0; int len = strlen( in_str ); while ( i<len ) { // read the first byte c1 = in_str[i++]; if ( i==len ) // pad with "=" { out_str[j++] = base64_encode_chars[ c1>>2 ]; out_str[j++] = base64_encode_chars[ (c1&0x3)<<4 ]; out_str[j++] = '='; out_str[j++] = '='; break; } // read the second byte c2 = in_str[i++]; if ( i==len ) // pad with "=" { out_str[j++] = base64_encode_chars[ c1>>2 ]; out_str[j++] = base64_encode_chars[ ((c1&0x3)<<4) | ((c2&0xF0)>>4) ]; out_str[j++] = base64_encode_chars[ (c2&0xF)<<2 ]; out_str[j++] = '='; break; } // read the third byte c3 = in_str[i++]; // convert into four bytes string out_str[j++] = base64_encode_chars[ c1>>2 ]; out_str[j++] = base64_encode_chars[ ((c1&0x3)<<4) | ((c2&0xF0)>>4) ]; out_str[j++] = base64_encode_chars[ ((c2&0xF)<<2) | ((c3&0xC0)>>6) ]; out_str[j++] = base64_encode_chars[ c3&0x3F ]; } out_str[j] = 0; return out_str; } /* char* decode( const char* in_str, char* out_str) { const base64_decode_chars[] = { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1 }; char c1, c2, c3, c4; int i = 0; int j = 0; int len = strlen( in_str ); while ( i<len) { // read the first byte do { c1 = base64_decode_chars[ in_str[i++] ]; } while ( i<len && c1==-1); if ( c1==-1) break; // read the second byte do { c2 = base64_decode_chars[ in_str[i++] ]; } while ( i<len && c2==-1); if ( c2==-1 ) break; // assamble the first byte out_str[j++] = char( (c1<<2) | ((c2&0x30)>>4) ); // read the third byte do { c3 = in_str[i++]; if ( c3==61 ) // meet with "=", break return out_str; c3 = base64_decode_chars[ c3 ]; } while ( i<len && c3==-1); if ( c3==-1 ) break; // assamble the second byte out_str[j++] = char( ((c2&0XF)<<4) | ((c3&0x3C)>>2) ); // read the fourth byte do { c4 = in_str[i++]; if ( c4==61 ) // meet with "=", break return out_str; c4 = base64_decode_chars[ c4 ]; } while ( i<len && c4==-1 ); if ( c4==-1 ) break; // assamble the third byte out_str[j++] = char( ((c3&0x03)<<6) | c4 ); } return out_str; } */ int MyRecv( SOCKET socket, char *buffer, int len) { int z; z = WaitForRead( socket, 100 ); if ( z < 0 ) { fprintf( stderr, "Select() faield!\n" ); closesocket( socket ); return -1; } else if ( z == 0 ) { fprintf( stdout, "Receive Time Out!\n" ); closesocket( socket ); return -1; } z = recv( socket, buffer, len, 0 ); if ( z < 0 ) { fprintf( stderr, "Receive failed!\n" ); closesocket( socket ); return -1; } else if ( z == 0 ) { fprintf( stdout, "Break by remote!\n" ); closesocket( socket ); return -1; } buffer[z]=0; fprintf( stdout, "[INFO]RECV( ):%s\n", buffer); return z; } int MySend( SOCKET socket, char *buffer, int len) { int z; z = WaitForWrite( socket, 100 ); if ( z < 0 ) { fprintf( stderr, "Select() faield!\n" ); closesocket( socket ); return -1; } else if ( z == 0 ) { fprintf( stdout, "Receive Time Out!\n" ); closesocket( socket ); return -1; } z = send( socket, buffer, len, 0); if ( z < 0 ) { fprintf( stderr, "Receive failed!\n" ); closesocket( socket ); return -1; } else if ( z == 0 ) { fprintf( stdout, "Break by remote!\n" ); closesocket( socket ); return -1; } fprintf( stdout, "[INFO]SEND:%s\n", buffer ); return z; } int WaitForRead( SOCKET socket, int seconds ) { fd_set fds; struct timeval timeOut; int z; FD_ZERO( &fds ); FD_SET( socket, &fds ); timeOut.tv_sec = seconds; timeOut.tv_usec = 0; z = select( socket+1, &fds, NULL, NULL, &timeOut ); return z; } int WaitForWrite( SOCKET socket, int seconds ) { fd_set fds; struct timeval timeOut; int z; FD_ZERO( &fds ); FD_SET( socket, &fds ); timeOut.tv_sec = seconds; timeOut.tv_usec = 0; z = select( socket+1, NULL, &fds, NULL, &timeOut ); return z; } [/code:1:0a42cdba85] |
| 蓝色键盘 回复于：2003-10-17 13:34:02 |
| 露山购热情，老夫置为精彩回帖。 |
| littlescorpian 回复于：2003-10-17 16:01:36 |
 |
| aiqin21sgy 回复于：2003-10-23 00:16:03 |
| "你上个问题中已给你了个C++的简单发邮件程序"?
能不能给贴出来看看,谢谢!! |
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