mirror of
https://github.com/ultimatepp/ultimatepp.git
synced 2026-05-16 06:05:58 -06:00
442 lines
11 KiB
C++
442 lines
11 KiB
C++
#include "Web.h"
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namespace Upp {
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//#define SMTP_DEBUG // uncomment this line to turn on LOG-based SMTP emulation
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//#define SMTP_LOG // uncomment this line to turn on command-line based logging of SMTP communication
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static String GetDelimiter(const char *b, const char *e, String init)
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{
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static const char delimiters[] =
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"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdef"
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"ghijklmnopqrstuvxyz()+/:?0123456"
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"789abcdefghijklmnopqrstuvwxyzABC"
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"DEFGHIJKLMNOPQRSTUVWXYZ012345678";
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String out = init;
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if(b == e)
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return out;
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if(IsNull(out))
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out.Cat(delimiters[*b++ & 0x7F]);
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int l = out.GetLength();
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for(; b != e; b++)
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{
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b = (const char *)memchr(b, *out, e - b);
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if(!b || e - b < l)
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return out;
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if(!memcmp(b, out, l))
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{
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if(e - b == l)
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return out + '/';
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out.Cat(delimiters[b[l] & 0x7F]);
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}
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}
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return out;
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}
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static String GetDelimiter(String s, String init)
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{
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return GetDelimiter(s.Begin(), s.End(), init);
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}
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static void Send(Socket& socket, const String &s, String *transcript = 0, int timeout = 60)
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{
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#ifdef SMTP_LOG
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puts("Command: " + s);
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#endif
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if(transcript && !s.IsEmpty())
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{
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transcript -> Cat(s);
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if(*s.Last() != '\n')
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transcript -> Cat('\n');
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}
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#ifdef SMTP_DEBUG
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GetVppLog().Put(s);
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return;
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#endif
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dword end_time = (timeout >= 0 ? GetTickCount() + 1000 * timeout : 0xFFFFFFFF);
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const char *p = s.Begin(), *e = s.End();
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while(p != e)
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{
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if((dword)GetTickCount() > end_time)
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throw Exc(t_("Communication Failure: Timeout."));
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int amount = socket.WriteRaw(p, int(e - p)), err;
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if(amount > 0)
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{ // some data has been sent - reset timeout
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p += amount;
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end_time = (timeout >= 0 ? GetTickCount() + 1000 * timeout : 0xFFFFFFFF);
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}
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else if(amount == 0)
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throw Exc(t_("Error writing data to socket: communication port closed."));
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else if((err = Socket::GetErrorCode()) != SOCKERR(EWOULDBLOCK)) {
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String str;
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throw Exc(str << t_("Error writing data to socket, error code: ") << err);
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}
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else
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Sleep(100);
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}
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}
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static String SendRecv(Socket& socket, const String& s, String *transcript = 0, int timeout = 60)
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{
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Send(socket, s, transcript, timeout);
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#ifdef SMTP_DEBUG
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return "250 OK";
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#endif
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String dest;
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dword end_time = (timeout >= 0 ? GetTickCount() + 1000 * timeout : 0xFFFFFFFF);
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for(;;)
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{
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if((dword)GetTickCount() > end_time)
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throw Exc(t_("Communication Failure: Timeout."));
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char buffer[100];
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int amount = socket.ReadRaw(buffer, sizeof(buffer)), err;
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if(amount > 0)
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{
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dest.Cat(buffer, amount);
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while(--amount >= 0)
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if(buffer[amount] == '\n')
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{
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if(transcript && !dest.IsEmpty())
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{
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transcript -> Cat(dest);
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if(*dest.Last() != '\n')
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transcript -> Cat('\n');
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}
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#ifdef SMTP_LOG
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puts("Reply: " + dest);
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#endif
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return dest;
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}
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}
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else if(amount == 0)
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throw Exc(t_("Error reading data from socket: communication port closed."));
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else if((err = Socket::GetErrorCode()) != SOCKERR(EWOULDBLOCK))
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throw Exc(NFormat(t_("Error reading socket, error code: %s"), err));
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else
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Sleep(100);
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}
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}
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static void SendRecvOK(Socket& socket, const String& s, String *transcript = 0, int timeout = 60)
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{
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String ans = SendRecv(socket, s, transcript, timeout);
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if(ans[0] != '2' || ans[1] != '5' || ans[2] != '0')
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throw Exc(ans);
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}
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//////////////////////////////////////////////////////////////////////
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// SmtpMail::
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SmtpMail::SmtpMail()
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: port(25)
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, no_header(false)
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, no_header_sep(false)
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, time_sent(GetSysTime())
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{
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}
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static const char default_mime[] = "application/octet-stream";
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String SmtpMail::Encode(const String& text)
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{
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String txt = ToCharset(CHARSET_UTF8, text);
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String r = "=?UTF-8?Q?";
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for(const char *s = txt; *s; s++) {
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if((byte)*s < ' ' || (byte)*s > 127 || *s == '=' || *s == '?' || *s == ' ')
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r << '=' << FormatIntHexUpper((byte)*s, 2);
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else
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r.Cat(*s);
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}
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r << "?=";
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return r;
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}
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SmtpMail& SmtpMail::To(const String& t, const String& name, AS a)
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{
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to.Add(t);
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to_name.Add(name);
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as.Add(a);
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return *this;
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}
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SmtpMail& SmtpMail::Subject(const String& s)
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{
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subject = s;
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return *this;
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}
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SmtpMail& SmtpMail::ReplyTo(const String& r, const String& name)
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{
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reply_to = r;
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reply_to_name = name;
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return *this;
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}
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SmtpMail& SmtpMail::From(const String& f, const String& name)
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{
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from = f;
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from_name = name;
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return *this;
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}
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SmtpMail& SmtpMail::AttachFile(const char *filename, const char *mime)
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{
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Attachment& attach = attachments.Add();
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attach.name = GetFileNamePos(filename);
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attach.mime = (mime ? mime : default_mime);
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attach.file = filename;
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return *this;
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}
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SmtpMail& SmtpMail::Attach(const char *name, const String& data, const char *mime)
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{
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Attachment& attach = attachments.Add();
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attach.name = name;
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attach.mime = (mime ? mime : default_mime);
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attach.data = data;
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return *this;
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}
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String SmtpMail::FormatAddr(const String& addr, const String& name)
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{
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String r;
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if(name.GetCount())
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r << "\"" << Encode(name) << "\" ";
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r << '<' << addr << '>';
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return r;
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}
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bool SmtpMail::Send()
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{
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Socket socket;
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String ipaddr;
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try
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{
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if(IsNull(host))
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throw Exc(t_("Host not set."));
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if(to.IsEmpty())
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throw Exc(t_("Recipient not set."));
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#ifdef SMTP_DEBUG
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ipaddr = "1.2.3.4";
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#else
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Socket::Init();
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dword my_addr;
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if(!ClientSocket(socket, host, port, true, &my_addr, 10000, true))
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throw Exc(NFormat("Cannot open socket %s:%d: %s", host, port, Socket::GetErrorText()));
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ipaddr
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<< (int)((my_addr >> 0) & 0xFF) << '.'
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<< (int)((my_addr >> 8) & 0xFF) << '.'
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<< (int)((my_addr >> 16) & 0xFF) << '.'
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<< (int)((my_addr >> 24) & 0xFF);
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#endif
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String *trans_ptr = (transcript ? &transcript_text : 0);
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String ans;
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// receive initial message & send hello
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SendRecv(socket, Null, trans_ptr, 30);
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String org;
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int pos = from.Find('@');
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if(pos >= 0)
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{
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int start = ++pos, len = from.GetLength();
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while(pos < len && from[pos] != '>')
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pos++;
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org = from.Mid(start, pos - start);
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}
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else
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org << ipaddr;
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SendRecvOK(socket, "HELO " + org + "\r\n", trans_ptr);
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if(!IsNull(auth_user)) {
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String ans = SendRecv(socket, "AUTH LOGIN\r\n", trans_ptr);
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while(ans[0] != '2')
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if(ans[0] == '3' && ans[1] == '3' && ans[2] == '4' && ans[3] == ' ') {
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String param = Base64Decode(ans.GetIter(4), ans.End());
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if(param == "Username:")
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ans = SendRecv(socket, Base64Encode(auth_user) + "\r\n", trans_ptr);
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else if(param == "Password:")
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ans = SendRecv(socket, Base64Encode(auth_pwd) + "\r\n", trans_ptr);
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else
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throw Exc(ans);
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}
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else
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throw Exc(ans);
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}
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SendRecvOK(socket, "MAIL FROM:<" + from + ">\r\n", trans_ptr);
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for(int i = 0; i < to.GetCount(); i++)
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SendRecv(socket, "RCPT TO:<" + to[i] + ">\r\n", trans_ptr);
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ans = SendRecv(socket, "DATA\r\n", trans_ptr);
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#ifndef SMTP_DEBUG
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if(memcmp(ans, "354", 3))
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throw Exc(ans);
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#endif
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String delimiter = "?";
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for(int i = 0; i < text.GetCount(); i++)
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delimiter = GetDelimiter(text[i], delimiter);
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bool alter = text.GetCount() > 1;
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bool multi = !attachments.IsEmpty();
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{ // format message
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String msg;
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if(!no_header)
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{ // generate message header
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msg << "From: " << FormatAddr(from, from_name) << "\r\n";
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static const AS as_list[] = { TO, CC, BCC };
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static const char *as_name[] = { "To", "CC", "BCC" };
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for(int a = 0; a < __countof(as_list); a++)
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{
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int pos = 0;
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for(int i = 0; i < as.GetCount(); i++)
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if(as[i] == as_list[a])
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{
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if(pos && pos + to[i].GetLength() >= 70)
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{
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msg << "\r\n ";
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pos = 5;
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}
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else if(pos)
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{
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msg << ", ";
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pos += 2;
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}
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else
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{
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msg << as_name[a] << ": ";
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pos = (int)strlen(as_name[a]) + 2;
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}
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msg << FormatAddr(to[i], to_name[i]);
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}
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if(pos)
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msg << "\r\n";
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}
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if(!IsNull(subject))
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msg << "Subject: " << Encode(subject) << "\r\n";
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if(!IsNull(reply_to))
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msg << "Reply-To: " << FormatAddr(reply_to, reply_to_name) << "\r\n";
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if(!IsNull(time_sent)) {
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static const char *dayofweek[] =
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{ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
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static const char *month[] =
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{ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
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msg << "Date: "
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<< dayofweek[DayOfWeek(time_sent)] << ", "
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<< (int)time_sent.day << ' ' << month[time_sent.month - 1] << ' ' << (int)time_sent.year
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<< ' ' << Sprintf("%2d:%02d:%02d " + GetTimeZoneText(),
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time_sent.hour, time_sent.minute, time_sent.second)
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<< "\r\n";
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}
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if(multi || alter)
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msg << "Content-Type: Multipart/" << (alter ? "alternative" : "mixed")
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<< "; boundary=\"" << delimiter << "\"\r\n"
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"\r\n";
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msg << add_header;
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}
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for(int i = 0; i < text.GetCount(); i++) {
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String t = text[i], m = mime[i];
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if(!no_header) {
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if(multi || alter)
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msg << "--" << delimiter << "\r\n";
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if(IsNull(m))
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m << "text/plain; charset=\"" << MIMECharsetName(CHARSET_DEFAULT) << "\"";
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msg << "Content-Type: " << m << "\r\n"
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"Content-Transfer-Encoding: quoted-printable\r\n";
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}
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if(!no_header_sep)
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msg << "\r\n";
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bool begin = true;
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for(const char *p = t.Begin(), *e = t.End(); p != e; p++)
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if(*p >= 33 && *p <= 126 && *p != '=' && (*p != '.' || !begin)) {
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msg.Cat(*p);
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begin = false;
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}
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else if(*p == '.' && begin) {
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msg.Cat("..");
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begin = false;
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}
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else if(*p == ' ' && p + 1 != e && p[1] != '\r' && p[1] != '\n') {
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msg.Cat(' ');
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begin = false;
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}
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else if(*p == '\r')
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;
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else if(*p == '\n') {
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msg.Cat("\r\n");
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begin = true;
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}
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else {
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static const char hex[] = "0123456789ABCDEF";
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msg.Cat('=');
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msg.Cat(hex[(*p >> 4) & 15]);
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msg.Cat(hex[*p & 15]);
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}
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if(!begin)
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msg.Cat("\r\n");
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}
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for(int i = 0; i < attachments.GetCount(); i++) {
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const Attachment& a = attachments[i];
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One<Stream> source;
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if(!IsNull(a.file)) {
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One<FileIn> fi = new FileIn(a.file);
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if(fi -> IsOpen())
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source = -fi;
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}
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else
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source = new StringStream(a.data);
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msg << "--" << delimiter << "\r\n"
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"Content-Type: " << a.mime << "; name=\"" << a.name << "\"\r\n"
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"Content-Transfer-Encoding: base64\r\n"
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"Content-Disposition: attachment; filename=\"" << a.name << "\"\r\n"
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"\r\n";
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char buffer[54];
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for(int c; (c = source -> Get(buffer, sizeof(buffer))) != 0;)
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{
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msg.Cat(Base64Encode(buffer, buffer + c));
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msg.Cat('\r');
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msg.Cat('\n');
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if(msg.GetLength() >= 65536) {
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UPP::Send(socket, msg, trans_ptr);
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msg = Null;
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}
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}
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}
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if(multi || alter)
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msg << "--" << delimiter << "--\r\n";
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msg.Cat(".\r\n");
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SendRecvOK(socket, msg, trans_ptr);
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}
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SendRecv(socket, "QUIT\r\n", trans_ptr);
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return true;
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}
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catch(Exc e)
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{
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error = e;
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return false;
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}
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}
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SmtpMail& SmtpMail::New()
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{
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to.Clear();
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to_name.Clear();
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as.Clear();
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text.Clear();
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mime.Clear();
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error.Clear();
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transcript_text.Clear();
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add_header.Clear();
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return *this;
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}
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}
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