Friday, 30 September 2022

Send email in Oracle EBS by using UTL_SMTP

 create or replace PACKAGE  xx_send_mail IS


  ----------------------- Customizable Section -----------------------


  -- Customize the SMTP host, port and your domain name below.

  smtp_host   VARCHAR2(256) := 'mercury';

  smtp_port   PLS_INTEGER   := 25;

  smtp_domain VARCHAR2(256) := 'xx.ss.net';


  -- Customize the signature that will appear in the email's MIME header.

  -- Useful for versioning.

  MAILER_ID   CONSTANT VARCHAR2(256) := 'Mailer by Oracle UTL_SMTP';


  --------------------- End Customizable Section ---------------------


  -- A unique string that demarcates boundaries of parts in a multi-part email

  -- The string should not appear inside the body of any part of the email.

  -- Customize this if needed or generate this randomly dynamically.

  BOUNDARY        CONSTANT VARCHAR2(256) := '-----7D81B75CCC90D2974F7A1CBD';


  FIRST_BOUNDARY  CONSTANT VARCHAR2(256) := '--' || BOUNDARY || utl_tcp.CRLF;

  LAST_BOUNDARY   CONSTANT VARCHAR2(256) := '--' || BOUNDARY || '--' ||

                                              utl_tcp.CRLF;


  -- A MIME type that denotes multi-part email (MIME) messages.

  MULTIPART_MIME_TYPE CONSTANT VARCHAR2(256) := 'multipart/mixed; boundary="'||

                                                  BOUNDARY || '"';

  MAX_BASE64_LINE_WIDTH CONSTANT PLS_INTEGER   := 76 / 4 * 3;


  -- A simple email API for sending email in plain text in a single call.

  -- The format of an email address is one of these:

  --   someone@some-domain

  --   "Someone at some domain" <someone@some-domain>

  --   Someone at some domain <someone@some-domain>

  -- The recipients is a list of email addresses  separated by

  -- either a "," or a ";"

  PROCEDURE mail(sender     IN VARCHAR2

               , recipients IN VARCHAR2

               , subject    IN VARCHAR2

               , message    IN VARCHAR2);


  PROCEDURE mail(srce IN VARCHAR2

               , sender     IN VARCHAR2

               , recipients IN VARCHAR2

               , subject    IN VARCHAR2

               , message    IN VARCHAR2);


  PROCEDURE mail_attach(sender     IN VARCHAR2

               , recipients IN VARCHAR2

               , subject    IN VARCHAR2

               , message    IN VARCHAR2

               , p_attch    IN VARCHAR2);


  -- Extended email API to send email in HTML or plain text with no size limit.

  -- First, begin the email by begin_mail(). Then, call write_text() repeatedly

  -- to send email in ASCII piece-by-piece. Or, call write_mb_text() to send

  -- email in non-ASCII or multi-byte character set. End the email with

  -- end_mail().

  FUNCTION begin_mail(sender     IN VARCHAR2,

              recipients IN VARCHAR2,

              subject    IN VARCHAR2,

              mime_type  IN VARCHAR2    DEFAULT 'text/plain',

              priority   IN PLS_INTEGER DEFAULT NULL)

              RETURN utl_smtp.connection;


  -- Write email body in ASCII

  PROCEDURE write_text(conn    IN OUT NOCOPY utl_smtp.connection,

               message IN VARCHAR2);


  -- Write email body in non-ASCII (including multi-byte). The email body

  -- will be sent in the database character set.

  PROCEDURE write_mb_text(conn    IN OUT NOCOPY utl_smtp.connection,

              message IN            VARCHAR2);


  -- Write email body in binary

  PROCEDURE write_raw(conn    IN OUT NOCOPY utl_smtp.connection,

              message IN RAW);


  -- APIs to send email with attachments. Attachments are sent by sending

  -- emails in "multipart/mixed" MIME format. Specify that MIME format when

  -- beginning an email with begin_mail().


  -- Send a single text attachment.

  PROCEDURE attach_text(conn         IN OUT NOCOPY utl_smtp.connection,

            data         IN VARCHAR2,

            mime_type    IN VARCHAR2 DEFAULT 'text/plain',

            inline       IN BOOLEAN  DEFAULT TRUE,

            filename     IN VARCHAR2 DEFAULT NULL,

                last         IN BOOLEAN  DEFAULT FALSE);


  -- Send a binary attachment. The attachment will be encoded in Base-64

  -- encoding format.

  PROCEDURE attach_base64(conn         IN OUT NOCOPY utl_smtp.connection,

              data         IN RAW,

              mime_type    IN VARCHAR2 DEFAULT 'application/octet',

              inline       IN BOOLEAN  DEFAULT TRUE,

              filename     IN VARCHAR2 DEFAULT NULL,

              last         IN BOOLEAN  DEFAULT FALSE);


  -- Send an attachment with no size limit. First, begin the attachment

  -- with begin_attachment(). Then, call write_text repeatedly to send

  -- the attachment piece-by-piece. If the attachment is text-based but

  -- in non-ASCII or multi-byte character set, use write_mb_text() instead.

  -- To send binary attachment, the binary content should first be

  -- encoded in Base-64 encoding format using the demo package for 8i,

  -- or the native one in 9i. End the attachment with end_attachment.

  PROCEDURE begin_attachment(conn         IN OUT NOCOPY utl_smtp.connection,

                 mime_type    IN VARCHAR2 DEFAULT 'text/plain',

                 inline       IN BOOLEAN  DEFAULT TRUE,

                 filename     IN VARCHAR2 DEFAULT NULL,

                 transfer_enc IN VARCHAR2 DEFAULT NULL);


  -- End the attachment.

  PROCEDURE end_attachment(conn IN OUT NOCOPY utl_smtp.connection,

               last IN BOOLEAN DEFAULT FALSE);


  -- End the email.

  PROCEDURE end_mail(conn IN OUT NOCOPY utl_smtp.connection);


  -- Extended email API to send multiple emails in a session for better

  -- performance. First, begin an email session with begin_session.

  -- Then, begin each email with a session by calling begin_mail_in_session

  -- instead of begin_mail. End the email with end_mail_in_session instead

  -- of end_mail. End the email session by end_session.

  FUNCTION begin_session RETURN utl_smtp.connection;


  -- Begin an email in a session.

  PROCEDURE begin_mail_in_session(conn       IN OUT NOCOPY utl_smtp.connection,

                  sender     IN VARCHAR2,

                  recipients IN VARCHAR2,

                  subject    IN VARCHAR2,

                  mime_type  IN VARCHAR2  DEFAULT 'text/plain',

                  priority   IN PLS_INTEGER DEFAULT NULL);


  -- End an email in a session.

  PROCEDURE end_mail_in_session(conn IN OUT NOCOPY utl_smtp.connection);


  -- End an email session.

  PROCEDURE end_session(conn IN OUT NOCOPY utl_smtp.connection);


END;

/



create or replace PACKAGE BODY      xx_send_mail IS


  -- Return the next email address in the list of email addresses, separated

  -- by either a "," or a ";".  The format of mailbox may be in one of these:

  --   someone@some-domain

  --   "Someone at some domain" <someone@some-domain>

  --   Someone at some domain <someone@some-domain>

  FUNCTION get_address(addr_list IN OUT VARCHAR2) RETURN VARCHAR2 IS


    addr VARCHAR2(256);

    i    pls_integer;


    FUNCTION lookup_unquoted_char(str  IN VARCHAR2,

                  chrs IN VARCHAR2) RETURN pls_integer AS

      c            VARCHAR2(5);

      i            pls_integer;

      len          pls_integer;

      inside_quote BOOLEAN;

    BEGIN

       inside_quote := false;

       i := 1;

       len := length(str);

       WHILE (i <= len) LOOP


     c := substr(str, i, 1);


     IF (inside_quote) THEN

       IF (c = '"') THEN

         inside_quote := false;

       ELSIF (c = '\') THEN

         i := i + 1; -- Skip the quote character

       END IF;

       GOTO next_char;

     END IF;


     IF (c = '"') THEN

       inside_quote := true;

       GOTO next_char;

     END IF;


     IF (instr(chrs, c) >= 1) THEN

        RETURN i;

     END IF;


     <<next_char>>

     i := i + 1;


       END LOOP;


       RETURN 0;


    END;


  BEGIN


    addr_list := ltrim(addr_list);

    i := lookup_unquoted_char(addr_list, ',;');

    IF (i >= 1) THEN

      addr      := substr(addr_list, 1, i - 1);

      addr_list := substr(addr_list, i + 1);

    ELSE

      addr := addr_list;

      addr_list := '';

    END IF;


    i := lookup_unquoted_char(addr, '<');

    IF (i >= 1) THEN

      addr := substr(addr, i + 1);

      i := instr(addr, '>');

      IF (i >= 1) THEN

    addr := substr(addr, 1, i - 1);

      END IF;

    END IF;


    RETURN addr;

  END;


  -- Write a MIME header

  PROCEDURE write_mime_header(conn  IN OUT NOCOPY utl_smtp.connection,

                  name  IN VARCHAR2,

                  value IN VARCHAR2) IS

  BEGIN

    utl_smtp.write_data(conn, name || ': ' || value || utl_tcp.CRLF);

  END;


  -- Mark a message-part boundary.  Set <last> to TRUE for the last boundary.

  PROCEDURE write_boundary(conn  IN OUT NOCOPY utl_smtp.connection,

               last  IN            BOOLEAN DEFAULT FALSE) AS

  BEGIN

    IF (last) THEN

      utl_smtp.write_data(conn, LAST_BOUNDARY);

    ELSE

      utl_smtp.write_data(conn, FIRST_BOUNDARY);

    END IF;

  END;


  ------------------------------------------------------------------------

  PROCEDURE mail(sender     IN VARCHAR2

               , recipients IN VARCHAR2

               , subject    IN VARCHAR2

               , message    IN VARCHAR2) IS

    conn utl_smtp.connection;

  BEGIN

    IF fnd_global.conc_program_id = -1 THEN

      dbms_output.put_line('The E-Mail functionality can only be used when being called by a Concurrent Program.');

    ELSE

      conn := begin_mail(sender, recipients, subject);

      write_text(conn, message);

      end_mail(conn);

    END IF;

  END;


   PROCEDURE mail(srce     IN VARCHAR2

   , sender     IN VARCHAR2

               , recipients IN VARCHAR2

               , subject    IN VARCHAR2

               , message    IN VARCHAR2) IS

    conn utl_smtp.connection;

  BEGIN

    --IF fnd_global.conc_program_id = -1 THEN

    --  dbms_output.put_line('The E-Mail functionality can only be used when being called by a Concurrent Program.');

    --ELSE

      conn := begin_mail(sender, recipients, subject);

      write_text(conn, message);

      end_mail(conn);

    --END IF;

  END;


  PROCEDURE mail_attach(sender     IN VARCHAR2

               , recipients IN VARCHAR2

               , subject    IN VARCHAR2

               , message    IN VARCHAR2

               , p_attch    IN VARCHAR2)

IS

    conn utl_smtp.connection;

  BEGIN

    --IF fnd_global.conc_program_id = -1 THEN

    --  dbms_output.put_line('The E-Mail functionality can only be used when being called by a Concurrent Program.');

    --ELSE

      conn := begin_mail(sender, recipients, subject);

      --

      IF p_attch is not null then

        attach_text( conn => conn, data => message, inline => False, filename  => p_attch, last => true);

      else

        write_text(conn, message);

      end if;

      end_mail(conn);

    --END IF;

  END;


  ------------------------------------------------------------------------

  FUNCTION begin_mail(sender     IN VARCHAR2,

              recipients IN VARCHAR2,

              subject    IN VARCHAR2,

              mime_type  IN VARCHAR2    DEFAULT 'text/plain',

              priority   IN PLS_INTEGER DEFAULT NULL)

              RETURN utl_smtp.connection IS

    conn utl_smtp.connection;

  BEGIN

    conn := begin_session;

    begin_mail_in_session(conn, sender, recipients, subject, mime_type,

      priority);

    RETURN conn;

  END;


  ------------------------------------------------------------------------

  PROCEDURE write_text(conn    IN OUT NOCOPY utl_smtp.connection,

               message IN VARCHAR2) IS

  BEGIN

    utl_smtp.write_data(conn, message);

  END;


  ------------------------------------------------------------------------

  PROCEDURE write_mb_text(conn    IN OUT NOCOPY utl_smtp.connection,

              message IN            VARCHAR2) IS

  BEGIN

    utl_smtp.write_raw_data(conn, utl_raw.cast_to_raw(message));

  END;


  ------------------------------------------------------------------------

  PROCEDURE write_raw(conn    IN OUT NOCOPY utl_smtp.connection,

              message IN RAW) IS

  BEGIN

    utl_smtp.write_raw_data(conn, message);

  END;


  ------------------------------------------------------------------------

  PROCEDURE attach_text(conn         IN OUT NOCOPY utl_smtp.connection,

            data         IN VARCHAR2,

            mime_type    IN VARCHAR2 DEFAULT 'text/plain',

            inline       IN BOOLEAN  DEFAULT TRUE,

            filename     IN VARCHAR2 DEFAULT NULL,

                last         IN BOOLEAN  DEFAULT FALSE) IS

  BEGIN

    begin_attachment(conn, mime_type, inline, filename);

    write_text(conn, data);

    end_attachment(conn, last);

  END;


  ------------------------------------------------------------------------

  PROCEDURE attach_base64(conn         IN OUT NOCOPY utl_smtp.connection,

              data         IN RAW,

              mime_type    IN VARCHAR2 DEFAULT 'application/octet',

              inline       IN BOOLEAN  DEFAULT TRUE,

              filename     IN VARCHAR2 DEFAULT NULL,

              last         IN BOOLEAN  DEFAULT FALSE) IS

    i   PLS_INTEGER;

    len PLS_INTEGER;

  BEGIN


    begin_attachment(conn, mime_type, inline, filename, 'base64');


    -- Split the Base64-encoded attachment into multiple lines

    i   := 1;

    len := utl_raw.length(data);

    WHILE (i < len) LOOP

       IF (i + MAX_BASE64_LINE_WIDTH < len) THEN

     utl_smtp.write_raw_data(conn,

        utl_encode.base64_encode(utl_raw.substr(data, i,

        MAX_BASE64_LINE_WIDTH)));

       ELSE

     utl_smtp.write_raw_data(conn,

       utl_encode.base64_encode(utl_raw.substr(data, i)));

       END IF;

       utl_smtp.write_data(conn, utl_tcp.CRLF);

       i := i + MAX_BASE64_LINE_WIDTH;

    END LOOP;


    end_attachment(conn, last);


  END;


  ------------------------------------------------------------------------

  PROCEDURE begin_attachment(conn         IN OUT NOCOPY utl_smtp.connection,

                 mime_type    IN VARCHAR2 DEFAULT 'text/plain',

                 inline       IN BOOLEAN  DEFAULT TRUE,

                 filename     IN VARCHAR2 DEFAULT NULL,

                 transfer_enc IN VARCHAR2 DEFAULT NULL) IS

  BEGIN

    write_boundary(conn);

    write_mime_header(conn, 'Content-Type', mime_type);


    IF (filename IS NOT NULL) THEN

       IF (inline) THEN

      write_mime_header(conn, 'Content-Disposition',

        'inline; filename="'||filename||'"');

       ELSE

      write_mime_header(conn, 'Content-Disposition',

        'attachment; filename="'||filename||'"');

       END IF;

    END IF;


    IF (transfer_enc IS NOT NULL) THEN

      write_mime_header(conn, 'Content-Transfer-Encoding', transfer_enc);

    END IF;


    utl_smtp.write_data(conn, utl_tcp.CRLF);

  END;


  ------------------------------------------------------------------------

  PROCEDURE end_attachment(conn IN OUT NOCOPY utl_smtp.connection,

               last IN BOOLEAN DEFAULT FALSE) IS

  BEGIN

    utl_smtp.write_data(conn, utl_tcp.CRLF);

    IF (last) THEN

      write_boundary(conn, last);

    END IF;

  END;


  ------------------------------------------------------------------------

  PROCEDURE end_mail(conn IN OUT NOCOPY utl_smtp.connection) IS

  BEGIN

    end_mail_in_session(conn);

    end_session(conn);

  END;


  ------------------------------------------------------------------------

  FUNCTION begin_session RETURN utl_smtp.connection IS

    conn utl_smtp.connection;

  BEGIN

    -- open SMTP connection

    conn := utl_smtp.open_connection(smtp_host, smtp_port);

    utl_smtp.helo(conn, smtp_domain);

    RETURN conn;

  END;


  ------------------------------------------------------------------------

  PROCEDURE begin_mail_in_session(conn       IN OUT NOCOPY utl_smtp.connection,

                  sender     IN VARCHAR2,

                  recipients IN VARCHAR2,

                  subject    IN VARCHAR2,

                  mime_type  IN VARCHAR2  DEFAULT 'text/plain',

                  priority   IN PLS_INTEGER DEFAULT NULL) IS

    my_recipients VARCHAR2(32767) := recipients;

    my_sender     VARCHAR2(32767) := sender;

  BEGIN


    -- Specify sender's address (our server allows bogus address

    -- as long as it is a full email address (xxx@yyy.com).

    utl_smtp.mail(conn, get_address(my_sender));


    -- Specify recipient(s) of the email.

    WHILE (my_recipients IS NOT NULL) LOOP

      utl_smtp.rcpt(conn, get_address(my_recipients));

    END LOOP;


    -- Start body of email

    utl_smtp.open_data(conn);


    -- Set "From" MIME header

    write_mime_header(conn, 'From', sender);


    -- Set "To" MIME header

    write_mime_header(conn, 'To', recipients);


    -- Set "Subject" MIME header

    write_mime_header(conn, 'Subject', subject);


    -- Set "Content-Type" MIME header

    write_mime_header(conn, 'Content-Type', mime_type);


    -- Set "X-Mailer" MIME header

    write_mime_header(conn, 'X-Mailer', MAILER_ID);


    -- Set priority:

    --   High      Normal       Low

    --   1     2     3     4     5

    IF (priority IS NOT NULL) THEN

      write_mime_header(conn, 'X-Priority', priority);

    END IF;


    -- Send an empty line to denotes end of MIME headers and

    -- beginning of message body.

    utl_smtp.write_data(conn, utl_tcp.CRLF);


    IF (mime_type LIKE 'multipart/mixed%') THEN

      write_text(conn, 'This is a multi-part message in MIME format.' ||

    utl_tcp.crlf);

    END IF;


  END;


  ------------------------------------------------------------------------

  PROCEDURE end_mail_in_session(conn IN OUT NOCOPY utl_smtp.connection) IS

  BEGIN

    utl_smtp.close_data(conn);

  END;


  ------------------------------------------------------------------------

  PROCEDURE end_session(conn IN OUT NOCOPY utl_smtp.connection) IS

  BEGIN

    utl_smtp.quit(conn);

  END;


END;

/

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