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Ê×Ò³ > Óʼþ·þÎñÆ÷ > ÓʼþÓë³ÌÐò¿ª·¢ > C#ÖжÔPOP3Óʼþ½âÂë > ÕýÎÄ

C#ÖжÔPOP3Óʼþ½âÂë

³ö´¦£º±¾Õ¾ÊÕ¼¯ÓÚÍøÂç ×÷ÕߣºÇë×÷ÕßÁªÏµ ʱ¼ä£º2005-7-11 10:15:00

  Base64ºÍÏÂÃæ½«Òª½éÉܵÄQuoted-Printable¶¼ÊôÓÚMIME
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¾Ý£©¡£MIME¶¨ÒåÔÚRFC1341ÖС£
    Base64ÊÇÏÖ½ñÔÚ»¥ÁªÍøÉÏÓ¦ÓÃ×î¶àµÄÒ»ÖÖ±àÂ룬¼¸ºõËù
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    ÏÂÃæÊÇBase64µÄÒ»¸öÀý×Ó£¬´ÓÀý×ÓÖУ¬ÄúÒ²¿ÉÒÔ¿´µ½
Base64Óëµç×ÓÓʼþµÄµÄ½ôÃÜÁªÏµ£º
Content-Type: text/plain;charset="cn-gb"
Content-Transfer-Encoding: BASE64
CQkJICAgIKG2wtLC68vjt6i088irobcNCgnX99XfOm1vZ2Fvo6yw19TGu8a619W+o6h0ZWxuZXQ6

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    Äã¿ÉÒÔ°ÑËüµ¥¶À´æ³ÉÒ»¸öÎļþ£¬¿ÉÒÔÈ¡ÃûΪ£ºmogao.eml£¬
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    Base64µÄË㷨ͬUuencodeµÄËã·¨ºÜ½Ó½ü£¬Ò²ºÜ¼òµ¥£ºËü½«
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ÓÃÏÂÃæµÄ64¸ö×Ö·ûÖØÐ±íʾ£º"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuv
wxyz0123456789+/"¡£
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    ÏÂÃæÎÒ¸ø³öBase64µÄ±àÂëºÍ½âÂëµÄCÓïÑÔÃèÊö£º
/*Base64±àÂë*/
void Base64(unsigned char chasc[3],unsigned char chuue[4])
/*
  chasc£ºÎ´±àÂëµÄ¶þ½øÖÆ´úÂë
  chuue£º±àÂë¹ýµÄBase64´úÂë
*/
{
 int i,k=2;
 unsinged char t=NULL;
 for(i=0;i<3;i++)
 {
  *(chuue+i)=*(chasc+i)>>k;
  *(chuue+i)|=t;
  t=*(chasc+i)<<(8-k);
  t>>=2;
  k+=2;
 }
 *(chuue+3)=*(chasc+2)&63;
 for(i=0;i<4;i++)
    if((*(chuue+i)>=0)&&(*(chuue+i)<=25)) *(chuue+i)+=65;
    else if((*(chuue+i)>=26)&&(*(chuue+i)<=51)) *(chuue+i)+=71;
    else if((*(chuue+i)>=52)&&(*(chuue+i)<=61)) *(chuue+i)-=4;
    else if(*(chuue+i)==62) *(chuue+i)=43;
    else if(*(chuue+i)==63) *(chuue+i)=47;
}
/*Base64½âÂë*/
void unBase64£¨unsigned char chuue[4]£¬unsigned char chasc[3]£©
/*
chuue£ºÎ´½âÂëµÄBase64´úÂë
chasc£º½âÂë¹ýµÄ¶þ½øÖÆ´úÂë
*/
{int i,k=2;
 unsigned char t=NULL;
 for(i=0;i<4;i++)
     if((*(chuue+i)>=65)&&(*(chuue+i)<=90)) *(chuue+i)-=65;
     else if((*(chuue+i)>=97)&&(*(chuue+i)<=122)) *(chuue+i)-=71;
     else if((*(chuue+i)>=48)&&(*(chuue+i)<=57)) *(chuue+i)+=4;
     else if(*(chuue+i)==43) *(chuue+i)=62;
     else if(*(chuue+i)==47) *(chuue+i)=63;
     else if(*(chuue+i)==61) *(chuue+i)=0;
 for(i=0;i<3;i++)
 {*(chhex+i)=*(chuue+i)<<k;
  k+=2;
  t=*(chuue+i+1)>>8-k;
  *(chhex+i)|=t;
 }
}
4. Quoted-Printable
    Quoted-Printable¼ò³ÆQP£¬ Ò»°ãÓÃÔÚEmailϵͳÖС£Ëü
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Content-Transfer-Encoding: quoted-printable
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        =D7=F7=D5=DF:mogao=A3=AC=B0=D7=D4=C6=BB=C6=BA=D7=D5=BE=A3=A8telnet://202.11
2.20.132:23=A3=A9=B3=C9=D4=B1=A1=A3
              =C4=AA=B8=DF=C8=ED=BC=FE=B9=A4=D7=F7=CA=D2=A3=BAhttp://mogao.bentiun.
net
                        Emailto:mogao@371.net
           *********************************************
           * =B3=FD=C1=CB=BC=C7=D2=E4=CA=B2=C3=B4=B6=BC=B2=BB=B4=F8=D7=DF=A3=AC=B3=
FD=C1=CB=D7=E3=BC=A3=CA=B2=C3=B4=B6=BC=B2=BB=C1=F4=CF=C2*
           *********************************************
    Äã¿ÉÒÔ°ÑËüµ¥¶À´æ³ÉÒ»¸öÎļþ£¬È¡ÃûΪ£ºmogao.eml£¬
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    QPµÄËã·¨¿ÉÒÔ˵ÊÇ×î¼òµ¥µÄÒ²¿ÉÒÔ˵ÊDZàÂëЧÂÊ×îµÍµÄ
£¨ËüµÄ±àÂëÂÊÊÇ1:3£©£¬ËüÊÇרÃÅΪÁË´¦Àí8λ×Ö·ûÖÆ¶¨µÄ¡£
ËüµÄËã·¨ÊÇ£º¶ÁÒ»¸ö×Ö·û£¬Èç¹ûASCIIÂë´óÓÚ127£¬¼´×Ö·ûµÄ
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±àÂëºÜ¼òµ¥£¬¿´ÏÂÃæµÄCÓïÑÔÃèÊö¼´¿É£º
/*QP±àÂë*/
void qp(unsigned char sour,unsigned char first,unsigned char second)
/*
  sour:Òª±àÂëµÄ×Ö·û
  first:±àÂëºóµÄµÚÒ»¸ö×Ö·û
   second:±àÂëºóµÄµÚ¶þ¸ö×Ö·û
  firstºÍsecondΪ·µ»ØÖµ
*/
{
 if(sour>127)
 {first=sour>>4;
  second=sour&15;
  if(first>9) first+=55;
  else first+=48;
  if(second>9) second+=55;
  else second+=48;
  printf("%c%c%c",'=',first,second);
 }
}
/*QP½âÂë*/
void uqp(unsigned char sour,unsigned char first,unsigned char second)
/*
  sour:½âÂëºóµÄ×Ö·û
  first:QPÂëµÄµÚÒ»¸ö×Ö·û
   second:QPÂëµÄµÚ¶þ¸ö×Ö·û
  sourΪ·µ»ØÖµ
*/
{
 if(first>=65) first-=55;
 else first-=48;
 if(second>=65) second-=55;
 else second-=48;
 sour=NULL;
 sour=first<<4;
 sour|=second;
}
    ÏÖÔÚ´ó¼ÒÖªµÀΪʲôQPµÄ±àÂëÂÊÄÇôµÍÁ˰ɣ¡¹ØÓÚQPµÄ
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