need to send html mail with attachment in unix - html

Question

I am facing problems in sending html mail with attachemnt.I will able to send mail with
attachment (plain text ) using mailx -s and uuencode command and also html mail
without attachment using sendmail option.
However I am not able to send html mail along with attachment.
Either one of it is working (html mail or attachment)
Below are the different ways I have tried. Could you please help me in resolving the same.
1) Failed because of illegal option base64
#!/usr/bin/ksh
export MAILTO="abc#abc.com"
export SUBJECT="Mail Subject"
export BODY="card_summary_mail.html"
export ATTACH="query5_result.csv"
(
echo "To: $MAILTO"
echo "Subject: $SUBJECT"
echo "MIME-Version: 1.0"
echo 'Content-Type: multipart/mixed; boundary="-q1w2e3r4t5"'
echo
echo '---q1w2e3r4t5'
echo "Content-Type: text/html"
echo "Content-Disposition: inline"
cat $BODY
echo '---q1w2e3r4t5'
echo 'Content-Type: application; name="'$(basename $ATTACH)'"'
echo "Content-Transfer-Encoding: base64"
echo 'Content-Disposition: attachment; filename="'$(basename $ATTACH)'"'
uuencode --base64 $ATTACH $(basename $ATTACH)
echo '---q1w2e3r4t5--'
) | /usr/lib/sendmail $MAILTO
2)
cib-sokay2{u384283}323:cat test_html2.sh
{
uuencode query5_result.csv query5_result.csv > attachment.txt
cat mail.html attachment.txt > attachment2.html
} | /usr/lib/sendmail -t abc#abc.com
-----------------------------------------------
3)
cib-sokay2{u384283}324:cat test_html3.sh
export MAILTO="abc#abc.com"
export CONTENT="mail.html"
export CONTENT_F="attachment.txt"
export SUBJECT="TEST EMAIL: TESTING HTML"
BOUNDARY='=== This is the boundary between parts of the message. ==='
{
print - "From: Someone <$MAILFROM>"
print - "To: Someone <${MAILTO}>"
print - 'Subject:' $SUBJECT
print - 'MIME-Version: 1.0'
print - 'Content-Type: MULTIPART/MIXED; '
print - ' BOUNDARY='\"$BOUNDARY\"
print -
print - ' This message is in MIME format. But if you can see this,'
print - " you aren't using a MIME aware mail program. You shouldn't "
print - ' have too many problems because this message is entirely in'
print - ' ASCII and is designed to be somewhat readable with old '
print - ' mail software.'
print -
print - "--${BOUNDARY}"
print - 'Content-Type: TEXT/PLAIN; charset=US-ASCII'
print -
cat $CONTENT
print -
print -
print - "--${BOUNDARY}"
print - 'Content-Type: TEXT/PLAIN; charset=US-ASCII; name='${CONTENT}
print - 'Content-Disposition: attachment; filename='${CONTENT_F}
print -
cat ${CONTENT}
print -
print - "--${BOUNDARY}--"
} | /usr/lib/sendmail ${MAILTO}
------------------------------------------------------------
cib-sokay2{u384283}326:cat test_html4.sh
#!/usr/bin/ksh
export MAILTO="abc#abc.com"
export CONTENT="mail.html"
export SUBJECT="subject of email"
(
echo "Subject: $SUBJECT"
# This appears in the mail body
cat $CONTENT
# The next line creates the attachment with a suitable extension to read
# with Windows notepad
unix2dos "attachment.txt" | uuencode myattach.txt
echo "."
) | /usr/lib/sendmail $MAILTO
-------------------------------------

Answer 1

Your first attempt is fairly close. Your second attempt seems to write something to a file which is then abandoned, and you feed empty input to sendmail. Your third attempt has a grave error in the MIME boundary and some peculiarities (why do you put the same content twice?), but is basically fairly similar to the first. Your fourth attempt looks fairly reasonable but old-fashioned, but could have failed because of false assumptions about how things need to be formatted (for example, if $CONTENT does not start with an empty line, your contents would go smack dab in the message headers, creating illegal headers and probably being rejected).
Assuming you have a command base64 on your system (it is included in GNU Coreutils since 6.0, almost ten years back), just replace the uuencode call with that, and fix the various minor formatting errors. Here is a refactored script which hopefully catches most of them.
#!/bin/sh
# No need to export anything, we are not passing these to child processes
MAILTO="abc#abc.com"
SUBJECT="Mail Subject"
BODY="card_summary_mail.html"
ATTACH="query5_result.csv"
( cat <<____HERE
To: $MAILTO
Subject: $SUBJECT
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="-q1w2e3r4t5"
... You could put a MIME preamble here but nobody ever reads it ...
---q1w2e3r4t5
Content-Type: text/html
Content-Disposition: inline
X-Notice: you need an empty line before the body here:
____HERE
cat "$BODY"
# also notice empty line at beginning of next snippet
cat <<____THERE
---q1w2e3r4t5
X-Notice: just "application" is incompletely specified
Content-Type: application/octet-stream; name="$(basename "$ATTACH")"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="$(basename "$ATTACH")"
X-Notice: another empty line
____THERE
base64 "$ATTACH"
echo '---q1w2e3r4t5--'
) | /usr/lib/sendmail "$MAILTO"
However, assembling your own MIME structure gets tired really fast -- I would recommend looking for a command-line MUA with proper attachment support (mutt is popular; some modern mail/mailx clones have similar facilities, but it's not standard).
Also, there is nothing ksh-specific here, so I changed the shebang.

Answer 2

Your first attempt is almost correct. Just replace --base64 by -m as shown below:
#!/usr/bin/ksh
export MAILTO="abc#abc.com"
export SUBJECT="Mail Subject"
export BODY="card_summary_mail.html"
export ATTACH="query5_result.csv"
(
echo "To: $MAILTO"
echo "Subject: $SUBJECT"
echo "MIME-Version: 1.0"
echo 'Content-Type: multipart/mixed; boundary="-q1w2e3r4t5"'
echo
echo '---q1w2e3r4t5'
echo "Content-Type: text/html"
echo "Content-Disposition: inline"
cat "$BODY"
echo '---q1w2e3r4t5'
echo 'Content-Type: application; name="'$(basename "$ATTACH")'"'
echo "Content-Transfer-Encoding: base64"
echo 'Content-Disposition: attachment; filename="'$(basename "$ATTACH")'"'
uuencode -m "$ATTACH" "$(basename "$ATTACH")"
echo '---q1w2e3r4t5--'
) | /usr/lib/sendmail $MAILTO