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.\" ========================================================================
.\"
.IX Title "TEXTMAIL 1"
.TH TEXTMAIL 1 "2007-08-02" "perl v5.8.8" "User Contributed Perl Documentation"
.SH "NAME"
\&\fItextmail\fR \- mail filter to replace MS Word/HTML attachments with plain text
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 28
\& usage: textmail [options]
\& options:
\&   -h       - Print the help message then exit
\&   -m       - Print the manpage then exit
\&   -w       - Print the manpage in html format then exit
\&   -r       - Print the manpage in nroff format then exit
\&   -M       - Output in mailbox format (mboxrd)
\&   -T       - Output in raw mail format (for smtp)
\&   -W       - Don't replace MS Word attachments with text
\&   -E       - Don't replace MS Excel attachments with csv
\&   -H       - Don't replace HTML attachments with text
\&   -R       - Don't replace RTF attachments with text
\&   -P       - Don't replace PDF attachments with text
\&   -U       - Don't translate winmail.dat attachments
\&   -L       - Don't reduce appledouble attachments
\&   -I       - Don't delete image attachments
\&   -A       - Don't delete audio attachments
\&   -V       - Don't delete video attachments
\&   -X       - Don't delete MS Windows executable attachments
\&   -B       - Don't recode text that was base64-encoded
\&   -S       - Don't replace spaces in filenames with underscores
\&   -Z       - Do translate signed content (discards signatures)
\&   -O       - Delete all application/octet-stream attachments
\&   -!       - Delete all application/* attachments
\&   -D hdrs  - Delete headers (list of header prefixes and filenames)
\&   -K types - Keep attachments (list of mimetypes and filenames)
\&   -f       - On translation error, keep translation, not original
\&   -?       - Print paths of helper applications then exit
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fItextmail\fR filters a mail message or mbox, replacing \s-1MS\s0 Word, \s-1MS\s0
Excel, \s-1HTML\s0, \s-1RTF\s0 and \s-1PDF\s0 attachments with the plain text contained therein.
By default, the following attachments are also deleted: image, audio, video
and \s-1MS\s0 Windows executables. \s-1MS\s0 \f(CW\*(C`winmail.dat\*(C'\fR attachments are replaced by
any attachments contained therein which are then replaced by text or deleted
in the same fashion. Any of these actions can be suppressed with the command
line options. Mail headers can also be selectively deleted.
.PP
This is useful for increasing the accessibility of mail messages (by
reducing their dependence on proprietary file formats), for dramatically
reducing their size (and the time it takes to download them and the time it
takes to read them), and for dramatically reducing the risk of mail-borne
viruses. Its intended use is as a preprocessor for mailing lists. This is
more friendly than a strict \*(L"No Attachments\*(R" policy.
.SH "OPTIONS"
.IX Header "OPTIONS"
.ie n .IP """\-h""" 4
.el .IP "\f(CW\-h\fR" 4
.IX Item "-h"
Print the help message then exit.
.ie n .IP """\-m""" 4
.el .IP "\f(CW\-m\fR" 4
.IX Item "-m"
Print the manpage then exit. This is equivalent to executing \f(CW\*(C`man textmail\*(C'\fR
but this works even when the manpage isn't installed.
.ie n .IP """\-w""" 4
.el .IP "\f(CW\-w\fR" 4
.IX Item "-w"
Print the manpage in html format then exit. This lets you install the
manpage in html format with a command like:
.Sp
.Vb 2
\&  mkdir -p /usr/local/share/doc/textmail/html &&
\&  textmail -w > /usr/local/share/doc/textmail/html/textmail.1.html
.Ve
.ie n .IP """\-r""" 4
.el .IP "\f(CW\-r\fR" 4
.IX Item "-r"
Print the manpage in nroff format then exit. This lets you install the
manpage with a command like:
.Sp
.Vb 1
\&  textmail -r > /usr/local/share/man/man1/textmail.1
.Ve
.ie n .IP """\-M""" 4
.el .IP "\f(CW\-M\fR" 4
.IX Item "-M"
This option causes the output to be in mboxrd format by adding a mailbox
\&\f(CW\*(C`From\*(C'\fR line at the top if there isn't one already and ensures that there is
a blank line at the bottom of the output. It also performs mailbox quoting
on any lines in the body that look like mailbox \f(CW\*(C`From\*(C'\fR headers. Use this
when the output is to be stored directly in a mailbox file. It is not
necessary when \fItextmail\fR is being used as a mail filter by \fI\fIprocmail\fI\|(1)\fR.
.ie n .IP """\-T""" 4
.el .IP "\f(CW\-T\fR" 4
.IX Item "-T"
This option causes the output to be in raw mail format by removing any
mailbox \f(CW\*(C`From\*(C'\fR line and by not performing mailbox quoting. Use this when
the output is to be sent directly to an \s-1SMTP\s0 server. It is not necessary
when \fItextmail\fR is being used as a mail filter by \fI\fIprocmail\fI\|(1)\fR.
.ie n .IP """\-W""" 4
.el .IP "\f(CW\-W\fR" 4
.IX Item "-W"
By default, \fItextmail\fR replaces \s-1MS\s0 Word attachments with inline plain text
attachments that contain just the plain text within the original document.
This option leaves \s-1MS\s0 Word attachments intact.
.ie n .IP """\-E""" 4
.el .IP "\f(CW\-E\fR" 4
.IX Item "-E"
By default, \fItextmail\fR replaces \s-1MS\s0 Excel attachments with \s-1CSV\s0 file
attachments that contain just the data within the original document. This
option leaves \s-1MS\s0 Excel attachments intact.
.ie n .IP """\-H""" 4
.el .IP "\f(CW\-H\fR" 4
.IX Item "-H"
By default, \fItextmail\fR replaces \s-1HTML\s0 attachments with inline plain text
attachments that contain just the text within the original document. It also
reduces text-versus-html alternative attachments to just the text
attachment. This option leaves \s-1HTML\s0 (and alternative) attachments intact.
.ie n .IP """\-R""" 4
.el .IP "\f(CW\-R\fR" 4
.IX Item "-R"
By default, \fItextmail\fR replaces \s-1RTF\s0 attachments with inline plain text
attachments that contain just the plain text within the original document.
This option leaves \s-1RTF\s0 attachments intact.
.ie n .IP """\-P""" 4
.el .IP "\f(CW\-P\fR" 4
.IX Item "-P"
By default, \fItextmail\fR replaces \s-1PDF\s0 attachments with inline plain text
attachments that contain just the plain text within the original document.
This option leaves \s-1PDF\s0 attachments intact.
.ie n .IP """\-U""" 4
.el .IP "\f(CW\-U\fR" 4
.IX Item "-U"
By default, \fItextmail\fR replaces \s-1MS\s0 \s-1TNEF\s0 (i.e. \f(CW\*(C`winmail.dat\*(C'\fR) attachments
with the attachments contained therein which are then translated to text as
normal. This option leaves \f(CW\*(C`winmail.dat\*(C'\fR attachments intact. This option,
together with the \f(CW\*(C`\-!\*(C'\fR option will cause winmail.dat attachments to be
deleted rather than translated.
.ie n .IP """\-L""" 4
.el .IP "\f(CW\-L\fR" 4
.IX Item "-L"
By default, \fItextmail\fR replaces \f(CW\*(C`multipart/appledouble\*(C'\fR attachments with
just the data fork attachment contained therein which is then translated to
text as normal. This option leaves appledouble attachments intact. However,
the data fork attachment will still be translated as normal resulting in a
probably inappropriate and possibly broken resource fork attachment.
Therefore, this option should probably only be used in conjunction with
other options that suppress the translation of the data fork attachment.
.ie n .IP """\-I""" 4
.el .IP "\f(CW\-I\fR" 4
.IX Item "-I"
By default, \fItextmail\fR deletes image attachments. This option leaves image
attachments intact.
.ie n .IP """\-A""" 4
.el .IP "\f(CW\-A\fR" 4
.IX Item "-A"
By default, \fItextmail\fR deletes audio attachments. This option leaves audio
attachments intact.
.ie n .IP """\-V""" 4
.el .IP "\f(CW\-V\fR" 4
.IX Item "-V"
By default, \fItextmail\fR deletes video attachments. This option leaves video
attachments intact.
.ie n .IP """\-X""" 4
.el .IP "\f(CW\-X\fR" 4
.IX Item "-X"
By default, \fItextmail\fR deletes attachments containing \s-1MS\s0 Windows
executables. That means \f(CW\*(C`application/octet\-stream\*(C'\fR attachments with the
following filename extensions: \f(CW\*(C`com\*(C'\fR, \f(CW\*(C`exe\*(C'\fR, \f(CW\*(C`pif\*(C'\fR, \f(CW\*(C`dll\*(C'\fR, \f(CW\*(C`ocx\*(C'\fR,
\&\f(CW\*(C`scr\*(C'\fR, \f(CW\*(C`vbs\*(C'\fR and \f(CW\*(C`js\*(C'\fR. This option leaves \s-1MS\s0 Windows executable
attachments intact. To delete \f(CW\*(C`zip\*(C'\fR files as well, you could use either the
\&\f(CW\*(C`\-O\*(C'\fR option or the \f(CW\*(C`\-!\*(C'\fR option.
.ie n .IP """\-B""" 4
.el .IP "\f(CW\-B\fR" 4
.IX Item "-B"
By default, when text is encountered that is \f(CW\*(C`base64\*(C'\fR\-encoded, \fItextmail\fR
will recode it as either \f(CW\*(C`7bit\*(C'\fR or \f(CW\*(C`quoted\-printable\*(C'\fR, whichever is
appropriate. This option suppresses this recoding. Note that if the text is
large enough and contains a high enough proportion of non-ASCII characters,
it will remain \f(CW\*(C`base64\*(C'\fR\-encoded to minimise space.
.ie n .IP """\-S""" 4
.el .IP "\f(CW\-S\fR" 4
.IX Item "-S"
When translating attachments, \fItextmail\fR replaces bad filename characters
such as space characters with the underscore character. This option causes
underscore characters to subsequently be converted into space characters. In
other words, you can use this option to preserve space characters in
attachment filenames (other bad filename characters will then be converted
to spaces as well).
.ie n .IP """\-Z""" 4
.el .IP "\f(CW\-Z\fR" 4
.IX Item "-Z"
By default, \fItextmail\fR will not translate \f(CW\*(C`multipart/signed\*(C'\fR attachments.
This option causes \f(CW\*(C`multipart/signed\*(C'\fR attachments to be replaced by the
signed attachment contained therein, discarding the signature control data.
The no-longer-signed data is then translated to text as normal. Note that
\&\f(CW\*(C`multipart/encrypted\*(C'\fR attachments are never translated.
.ie n .IP """\-O""" 4
.el .IP "\f(CW\-O\fR" 4
.IX Item "-O"
Delete all \f(CW\*(C`application/octet\-stream\*(C'\fR attachments, not just \s-1MS\s0 Windows
executables. Note that this overrides \f(CW\*(C`\-X\*(C'\fR but \f(CW\*(C`\-K\*(C'\fR overrides this.
.ie n .IP """\-!""" 4
.el .IP "\f(CW\-!\fR" 4
.IX Item "-!"
Delete all \f(CW\*(C`application/*\*(C'\fR attachments. Note that this overrides \f(CW\*(C`\-X\*(C'\fR but
\&\f(CW\*(C`\-K\*(C'\fR overrides this. Also note that translated documents are no longer
\&\f(CW\*(C`application/*\*(C'\fR attachments so they aren't deleted unless their translation
is suppressed with the appropriate command line option.
.ie n .IP """\-D""\fR \fIhdrs" 4
.el .IP "\f(CW\-D\fR \fIhdrs\fR" 4
.IX Item "-D hdrs"
Delete particular headers. The \fIhdrs\fR argument is a comma separated list of
header name prefixes and/or the names of files containing header name
prefixes (blank lines, whitespace and shell style comments are ignored). For
example, \f(CW\*(C`textmail \-DX\-\*(C'\fR deletes all headers whose names begin with \f(CW\*(C`X\-\*(C'\fR.
.ie n .IP """\-K""\fR \fItypes" 4
.el .IP "\f(CW\-K\fR \fItypes\fR" 4
.IX Item "-K types"
By default, \fItextmail\fR deletes several types of non-text attachment. The
\&\f(CW\*(C`\-O\*(C'\fR and \f(CW\*(C`\-!\*(C'\fR options delete even more. This option specifies, by mimetype
and/or filename extension, a list of attachments not to delete. This
overrides all deletions.
.Sp
The \fItypes\fR argument is a comma separated list of mimetypes and/or filename
extensions and/or the names of files containing mimetypes and/or filename
extensions (blank lines, whitespace and shell style comments are ignored).
Note that the elements are interpreted as a complete mimetype, if they
contain a slash character, or as either the \f(CW\*(C`*\*(C'\fR in \f(CW\*(C`application/*\*(C'\fR or as a
filename extension if they do not contain a slash character. For example,
\&\f(CW\*(C`textmail \-Wf!Kdoc\*(C'\fR deletes all \f(CW\*(C`application/*\*(C'\fR attachments except \s-1MS\s0 Word
documents.
.ie n .IP """\-f""" 4
.el .IP "\f(CW\-f\fR" 4
.IX Item "-f"
Whenever \fItextmail\fR is unable to translate any attachment into text, it
will leave the attachment intact. This happens when the requisite
translation software can't be found, when it runs but returns an error code,
and when it produces an empty file. It also happens when \f(CW\*(C`winmail.dat\*(C'\fR
attachments are corrupt. This option causes the empty translation to take
the place of the original attachment. Only the name of the attachment is
preserved. This is needed to ensure plain text even in the face of an \s-1MS\s0
Word document that contains no text (e.g. only images).
.ie n .IP """\-?""" 4
.el .IP "\f(CW\-?\fR" 4
.IX Item "-?"
Print the paths of all helper applications then exit.
.SH "EXAMPLES"
.IX Header "EXAMPLES"
A \fI\fIprocmail\fI\|(1)\fR recipe that insists on pure text and no \f(CW\*(C`X\-\*(C'\fR headers (with
output in mailbox format):
.PP
.Vb 2
\&  :0 fw
\&  | textmail -Mf!DX-
.Ve
.PP
Do the same but to an existing mailbox file:
.PP
.Vb 1
\&  textmail -Mf!DX- < mailbox > mailbox-as-text
.Ve
.PP
Delete all \f(CW\*(C`application/*\*(C'\fR attachments except for PostScript and \s-1PDF\s0 (and
don't translate \s-1PDF\s0 into text):
.PP
.Vb 1
\&  textmail -!PKps,pdf
.Ve
.PP
Delete all \f(CW\*(C`application/*\*(C'\fR attachments except for zip files and gzipped tar
files:
.PP
.Vb 1
\&  textmail -!Ktar.gz,zip
.Ve
.PP
A \fI\fIprocmail\fI\|(1)\fR recipe that just unpacks winmail.dat attachments but
doesn't translate the attachments contained therein into text and doesn't
delete windows executables (with output in mailbox format):
.PP
.Vb 2
\&  :0 fw
\&  | textmail -MWEHRPLIAVXS
.Ve
.SH "REQUIREMENTS"
.IX Header "REQUIREMENTS"
\&\s-1MS\s0 Word and \s-1RTF\s0 documents are translated into plain text using
\&\fI\fIantiword\fI\|(1)\fR or \fI\fIcatdoc\fI\|(1)\fR. If \fItextmail\fR can't find \fI\fIantiword\fI\|(1)\fR or
\&\fI\fIcatdoc\fI\|(1)\fR, then \s-1MS\s0 Word and \s-1RTF\s0 attachments are left intact. So make sure
that \fI\fIantiword\fI\|(1)\fR or \fI\fIcatdoc\fI\|(1)\fR is installed and in the \f(CW$PATH\fR.
.PP
\&\s-1MS\s0 Excel documents are translated into csv files using \fI\fIxls2csv\fI\|(1)\fR. If
\&\fItextmail\fR can't find \fI\fIxls2csv\fI\|(1)\fR, then \s-1MS\s0 Excel attachments are left
intact. So make sure that \fI\fIxls2csv\fI\|(1)\fR is installed and in the \f(CW$PATH\fR.
.PP
\&\s-1HTML\s0 documents are translated into plain text using \fI\fIlynx\fI\|(1)\fR. If
\&\fItextmail\fR can't find \fI\fIlynx\fI\|(1)\fR, then \s-1HTML\s0 attachments are left intact. So
make sure that \fI\fIlynx\fI\|(1)\fR is installed and in the \f(CW$PATH\fR.
.PP
\&\s-1PDF\s0 documents are translated into plain text using \fI\fIpdftotext\fI\|(1)\fR. If
\&\fItextmail\fR can't find \fI\fIpdftotext\fI\|(1)\fR, then \s-1PDF\s0 attachments are left
intact. So make sure that \fI\fIpdftotext\fI\|(1)\fR is installed and in the \f(CW$PATH\fR.
.PP
\&\fItextmail\fR also requires \fI\fIperl\fI\|(1)\fR and \fI\fIpod2man\fI\|(1)\fR and \fI\fIpod2html\fI\|(1)\fR
(which come with \fI\fIperl\fI\|(1)\fR) and \fI\fImktemp\fI\|(1)\fR.
.PP
If \fItextmail\fR fails to create a temporary directory, or if it is instructed
to do nothing (i.e. \f(CW\*(C`\-WEHRPULIAVX\*(C'\fR), then it degenerates into \fI\fIcat\fI\|(1)\fR.
.SH "CAVEAT"
.IX Header "CAVEAT"
The latest version of \fI\fIxls2csv\fI\|(1)\fR at the time of writing (i.e.
catdoc\-0.93.3) loses data.
.PP
If \fItextmail\fR is unable to create a temporary directory (in \f(CW\*(C`/tmp\*(C'\fR), then
it degenerates into \fI\fIcat\fI\|(1)\fR. Without a temporary directory, no attachments
will be translated or deleted no matter what options (even \f(CW\*(C`\-f\*(C'\fR) were given
to \fItextmail\fR. So make sure that \f(CW\*(C`/tmp\*(C'\fR is writable. Also make sure that
\&\fI\fImktemp\fI\|(1)\fR is available otherwise an insecure temporary directory will be
created.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fI\fIprocmail\fI\|(1)\fR,
\&\fI\fIantiword\fI\|(1)\fR,
\&\fI\fIcatdoc\fI\|(1)\fR,
\&\fI\fIxls2csv\fI\|(1)\fR,
\&\fI\fIlynx\fI\|(1)\fR,
\&\fI\fIpdftotext\fI\|(1)\fR,
\&\fI\fIpod2man\fI\|(1)\fR,
\&\fI\fIpod2html\fI\|(1)\fR,
\&\f(CW\*(C`http://raf.org/minimail/\*(C'\fR
.SH "AUTHOR"
.IX Header "AUTHOR"
20070803 raf <raf@raf.org>
.SH "URL"
.IX Header "URL"
\&\f(CW\*(C`http://raf.org/textmail/\*(C'\fR