Initial revision

15 files changed, 1758 insertions, 0 deletions

diff --git a/AUTHORS b/AUTHORS
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/AUTHORS
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..60549be
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,340 @@
+		    GNU GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+                       59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+			    Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Library General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary.  To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+		    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a
+    notice that there is no warranty (or else, saying that you provide
+    a warranty) and that users may redistribute the program under
+    these conditions, and telling the user how to view a copy of this
+    License.  (Exception: if the Program itself is interactive but
+    does not normally print such an announcement, your work based on
+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+    a) Accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of Sections
+    1 and 2 above on a medium customarily used for software interchange; or,
+
+    b) Accompany it with a written offer, valid for at least three
+    years, to give any third party, for a charge no more than your
+    cost of physically performing source distribution, a complete
+    machine-readable copy of the corresponding source code, to be
+    distributed under the terms of Sections 1 and 2 above on a medium
+    customarily used for software interchange; or,
+
+    c) Accompany it with the information you received as to the offer
+    to distribute corresponding source code.  (This alternative is
+    allowed only for noncommercial distribution and only if you
+    received the program in object code or executable form with such
+    an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it.  For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable.  However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+  5. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Program or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+			    NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+		     END OF TERMS AND CONDITIONS
+
+	    How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) 19yy  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) 19yy name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Library General
+Public License instead of this License.
diff --git a/INSTALL b/INSTALL
new file mode 100644
index 0000000..b42a17a
--- /dev/null
+++ b/INSTALL
@@ -0,0 +1,182 @@
+Basic Installation
+==================
+
+   These are generic installation instructions.
+
+   The `configure' shell script attempts to guess correct values for
+various system-dependent variables used during compilation.  It uses
+those values to create a `Makefile' in each directory of the package.
+It may also create one or more `.h' files containing system-dependent
+definitions.  Finally, it creates a shell script `config.status' that
+you can run in the future to recreate the current configuration, a file
+`config.cache' that saves the results of its tests to speed up
+reconfiguring, and a file `config.log' containing compiler output
+(useful mainly for debugging `configure').
+
+   If you need to do unusual things to compile the package, please try
+to figure out how `configure' could check whether to do them, and mail
+diffs or instructions to the address given in the `README' so they can
+be considered for the next release.  If at some point `config.cache'
+contains results you don't want to keep, you may remove or edit it.
+
+   The file `configure.in' is used to create `configure' by a program
+called `autoconf'.  You only need `configure.in' if you want to change
+it or regenerate `configure' using a newer version of `autoconf'.
+
+The simplest way to compile this package is:
+
+  1. `cd' to the directory containing the package's source code and type
+     `./configure' to configure the package for your system.  If you're
+     using `csh' on an old version of System V, you might need to type
+     `sh ./configure' instead to prevent `csh' from trying to execute
+     `configure' itself.
+
+     Running `configure' takes awhile.  While running, it prints some
+     messages telling which features it is checking for.
+
+  2. Type `make' to compile the package.
+
+  3. Optionally, type `make check' to run any self-tests that come with
+     the package.
+
+  4. Type `make install' to install the programs and any data files and
+     documentation.
+
+  5. You can remove the program binaries and object files from the
+     source code directory by typing `make clean'.  To also remove the
+     files that `configure' created (so you can compile the package for
+     a different kind of computer), type `make distclean'.  There is
+     also a `make maintainer-clean' target, but that is intended mainly
+     for the package's developers.  If you use it, you may have to get
+     all sorts of other programs in order to regenerate files that came
+     with the distribution.
+
+Compilers and Options
+=====================
+
+   Some systems require unusual options for compilation or linking that
+the `configure' script does not know about.  You can give `configure'
+initial values for variables by setting them in the environment.  Using
+a Bourne-compatible shell, you can do that on the command line like
+this:
+     CC=c89 CFLAGS=-O2 LIBS=-lposix ./configure
+
+Or on systems that have the `env' program, you can do it like this:
+     env CPPFLAGS=-I/usr/local/include LDFLAGS=-s ./configure
+
+Compiling For Multiple Architectures
+====================================
+
+   You can compile the package for more than one kind of computer at the
+same time, by placing the object files for each architecture in their
+own directory.  To do this, you must use a version of `make' that
+supports the `VPATH' variable, such as GNU `make'.  `cd' to the
+directory where you want the object files and executables to go and run
+the `configure' script.  `configure' automatically checks for the
+source code in the directory that `configure' is in and in `..'.
+
+   If you have to use a `make' that does not supports the `VPATH'
+variable, you have to compile the package for one architecture at a time
+in the source code directory.  After you have installed the package for
+one architecture, use `make distclean' before reconfiguring for another
+architecture.
+
+Installation Names
+==================
+
+   By default, `make install' will install the package's files in
+`/usr/local/bin', `/usr/local/man', etc.  You can specify an
+installation prefix other than `/usr/local' by giving `configure' the
+option `--prefix=PATH'.
+
+   You can specify separate installation prefixes for
+architecture-specific files and architecture-independent files.  If you
+give `configure' the option `--exec-prefix=PATH', the package will use
+PATH as the prefix for installing programs and libraries.
+Documentation and other data files will still use the regular prefix.
+
+   In addition, if you use an unusual directory layout you can give
+options like `--bindir=PATH' to specify different values for particular
+kinds of files.  Run `configure --help' for a list of the directories
+you can set and what kinds of files go in them.
+
+   If the package supports it, you can cause programs to be installed
+with an extra prefix or suffix on their names by giving `configure' the
+option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.
+
+Optional Features
+=================
+
+   Some packages pay attention to `--enable-FEATURE' options to
+`configure', where FEATURE indicates an optional part of the package.
+They may also pay attention to `--with-PACKAGE' options, where PACKAGE
+is something like `gnu-as' or `x' (for the X Window System).  The
+`README' should mention any `--enable-' and `--with-' options that the
+package recognizes.
+
+   For packages that use the X Window System, `configure' can usually
+find the X include and library files automatically, but if it doesn't,
+you can use the `configure' options `--x-includes=DIR' and
+`--x-libraries=DIR' to specify their locations.
+
+Specifying the System Type
+==========================
+
+   There may be some features `configure' can not figure out
+automatically, but needs to determine by the type of host the package
+will run on.  Usually `configure' can figure that out, but if it prints
+a message saying it can not guess the host type, give it the
+`--host=TYPE' option.  TYPE can either be a short name for the system
+type, such as `sun4', or a canonical name with three fields:
+     CPU-COMPANY-SYSTEM
+
+See the file `config.sub' for the possible values of each field.  If
+`config.sub' isn't included in this package, then this package doesn't
+need to know the host type.
+
+   If you are building compiler tools for cross-compiling, you can also
+use the `--target=TYPE' option to select the type of system they will
+produce code for and the `--build=TYPE' option to select the type of
+system on which you are compiling the package.
+
+Sharing Defaults
+================
+
+   If you want to set default values for `configure' scripts to share,
+you can create a site shell script called `config.site' that gives
+default values for variables like `CC', `cache_file', and `prefix'.
+`configure' looks for `PREFIX/share/config.site' if it exists, then
+`PREFIX/etc/config.site' if it exists.  Or, you can set the
+`CONFIG_SITE' environment variable to the location of the site script.
+A warning: not all `configure' scripts look for a site script.
+
+Operation Controls
+==================
+
+   `configure' recognizes the following options to control how it
+operates.
+
+`--cache-file=FILE'
+     Use and save the results of the tests in FILE instead of
+     `./config.cache'.  Set FILE to `/dev/null' to disable caching, for
+     debugging `configure'.
+
+`--help'
+     Print a summary of the options to `configure', and exit.
+
+`--quiet'
+`--silent'
+`-q'
+     Do not print messages saying which checks are being made.  To
+     suppress all normal output, redirect it to `/dev/null' (any error
+     messages will still be shown).
+
+`--srcdir=DIR'
+     Look for the package's source code in directory DIR.  Usually
+     `configure' can determine that directory automatically.
+
+`--version'
+     Print the version of Autoconf used to generate the `configure'
+     script, and exit.
+
+`configure' also accepts some other, not widely useful, options.
diff --git a/Makefile.am b/Makefile.am
new file mode 100644
index 0000000..fea1c39
--- /dev/null
+++ b/Makefile.am
@@ -0,0 +1,9 @@
+bin_PROGRAMS = esmtp
+
+man_MANS = esmtp.1
+
+esmtp_SOURCES = main.c parser.y lexer.l
+
+EXTRA_DIST = README.mutt sample.esmtprc
+
+AM_YFLAGS = -d
diff --git a/NEWS b/NEWS
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/NEWS
diff --git a/README b/README
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/README
diff --git a/README.mutt b/README.mutt
new file mode 100644
index 0000000..9881d83
--- /dev/null
+++ b/README.mutt
@@ -0,0 +1,27 @@
+To use esmtp with mutt add
+
+	set sendmail="/path/to/esmtp"
+
+to your ~/.muttrc and create a ~/.esmtp (see sample.esmtp for an example.)
+
+
+For debugging purposes you may prefer using the follwing shell script. 
+
+	#!/bin/sh
+
+	LOGFILE=/tmp/esmtp.log
+
+	echo $0 $@ > $LOGFILE
+
+	/path/to/esmtp -m $@ >> $LOGFILE
+
+	exit $?
+
+Save it as esmtp.sh and put in you ~/.muttrc
+
+	set sendmail="/path/to/esmtp.sh"
+
+instead.
+
+
+TODO: This would be better handled if done by esmtp itself and controllable by a configuration setting.
diff --git a/TODO b/TODO
new file mode 100644
index 0000000..6816ebc
--- /dev/null
+++ b/TODO
@@ -0,0 +1,2 @@
+- handle the '-t' option
+- better handling of other sendmail options
diff --git a/autogen.sh b/autogen.sh
new file mode 100755
index 0000000..de1db69
--- /dev/null
+++ b/autogen.sh
@@ -0,0 +1,9 @@
+#! /bin/sh
+
+export  WANT_AUTOMAKE_1_6=1
+
+aclocal \
+&& automake --gnu --add-missing \
+&& autoconf \
+&& ./configure --enable-maintainer-mode
+
diff --git a/configure.ac b/configure.ac
new file mode 100644
index 0000000..4a01f27
--- /dev/null
+++ b/configure.ac
@@ -0,0 +1,29 @@
+dnl Process this file with autoconf to produce a configure script.
+
+AC_INIT(Makefile.am)
+AM_INIT_AUTOMAKE(esmtp, 0.1)
+
+AM_MAINTAINER_MODE
+
+AC_PROG_CC
+AC_PROG_CPP
+
+AC_HEADER_STDC
+AC_CHECK_HEADERS(fcntl.h unistd.h)
+
+dnl getopt needs this
+AC_C_CONST
+
+AM_PROG_LEX
+AC_PROG_MAKE_SET
+AC_PROG_YACC
+
+YFLAGS=-d
+
+dnl Check for libESMTP
+AC_CHECK_LIB(esmtp, smtp_start_session, 
+    LIBS="$LIBS -lesmtp -lpthread",
+    AC_MSG_ERROR([*** libESMTP library not found.]),
+    -lpthread)
+
+AC_OUTPUT([Makefile])
diff --git a/esmtp.1 b/esmtp.1
new file mode 100644
index 0000000..a1055a0
--- /dev/null
+++ b/esmtp.1
@@ -0,0 +1,418 @@
+.\" Based on ssmtp.1 and sendmail.8 man pages of the sSMTP and 
+.\" sendmail distributions respectively.
+.\" 
+.\" Portions are
+.\"     Copyright (c) 1998-2002 Sendmail, Inc. and its suppliers.
+.\"         All rights reserved.
+.\"     Copyright (c) 1983, 1997 Eric P. Allman.  All rights reserved.
+.\"     Copyright (c) 1988, 1991, 1993
+.\"         The Regents of the University of California.  All rights reserved.
+.TH ESMTP 1
+.SH NAME
+esmtp
+.SH SUMMARY
+libESMTP to Sendmail compatibility interface
+.SH SYNOPSIS
+.B esmtp
+.RI "[ " flags " ] [ " address " "  ... " ]"
+.br
+.SH DESCRIPTION
+.B Esmtp
+is a send-only 
+.B sendmail
+emulator for machines which normally retrieve their mail
+up from a centralized mailhub
+using programs such as
+.B fetchmail
+.
+.PP
+.B Esmtp
+does not attempt to provide all the functionality of 
+.B sendmail
+: it is intended to be used by other 
+mail user agents as 
+.B mutt
+.
+
+.SH OPTIONS
+Most 
+.B sendmail
+options are irrelevent to 
+.B esmtp
+. Those marked ``ignored'' or
+``default'' have no effect on mail transfer.  Those marked ``unsupported''
+are fatal errors.  Those marked ``simulated'' are not errors, but the result
+is for the program to exit with an informative message. A sort of fatal
+non-error.
+
+.TP
+.B \-Ac
+(ignored)
+Use submit.cf even if the operation mode does not indicate
+an initial mail submission.
+
+.TP
+.B \-Am
+(ignored)
+Use sendmail.cf even if the operation mode indicates
+an initial mail submission.
+
+.TP
+.BI \-B type
+(ignored)
+Set the body type to
+.IR type .
+Current legal values are 
+7BIT 
+or  
+8BITMIME.
+
+.TP
+.B \-ba
+(ignored)
+Go into 
+ARPANET 
+mode.  All input lines must end with a CR-LF, 
+and all messages will be generated with a CR-LF at the end.  
+Also, 
+the ``From:'' and ``Sender:'' 
+fields are examined for the name of the sender.
+
+.TP
+.B \-bd
+(ignored)
+Run as a daemon.
+
+.TP
+.B \-bD
+(ignored)
+Same as
+.B \-bd
+except runs in foreground.
+
+.TP
+.B \-bh
+(ignored)
+Print the persistent host status database.
+
+.TP
+.B \-bH
+(ignored)
+Purge expired entries from the persistent host status database.
+
+.TP
+.B \-bi
+(ignored)
+Initialize the alias database.
+
+.TP
+.B \-bm
+(ignored)
+Deliver mail in the usual way (default).
+
+.TP
+.B \-bp
+(ignored)
+Print a listing of the queue(s).
+
+.TP
+.B \-bP
+(ignored)
+Print number of entries in the queue(s);
+only available with shared memory support.
+
+.TP
+.B \-bs
+(ignored)
+Use the 
+SMTP 
+protocol as described in 
+RFC821 
+on standard input and output.  
+This flag implies all the operations of the
+.B \-ba
+flag that are compatible with 
+SMTP.
+
+.TP
+.B \-bt
+(ignored)
+Run in address test mode.  
+
+.TP
+.B \-bv
+(ignored)
+Verify names only \- do not try to collect or deliver a message.
+
+.TP
+.BI \-C file
+(ignored)
+Use alternate configuration file.
+
+.TP
+.BI \-d X
+(ignored)
+Set debugging value to
+.IR X .
+.ne 1i
+
+.TP
+.BI \-F fullname
+Set the full name of the sender.
+
+.TP
+.BI \-f name
+Sets the name of the ``from'' person 
+(i.e., the envelope sender of the mail).
+This address may also be used in the From: header
+if that header is missing during initial submission.
+The envelope sender address is used as the recipient
+for delivery status notifications
+and may also appear in a Return-Path: header.
+.B \-f
+should only be used 
+by ``trusted'' users 
+(normally
+.IR root ", " daemon ,
+and
+.IR network )
+or if the person you are trying to become 
+is the same as the person you are.
+Otherwise,
+an X-Authentication-Warning header
+will be added to the message.
+
+.TP
+.BI \-G
+(ignored)
+Relay (gateway) submission of a message,
+e.g., when
+.BR rmail
+calls
+.B sendmail .
+
+.TP
+.BI \-h N
+(ignored)
+Set the hop count to
+.IR N .
+The hop count is incremented every time the mail is 
+processed.
+When it reaches a limit, 
+the mail is returned with an error message,
+the victim of an aliasing loop.  
+If not specified, 
+``Received:'' lines in the message are counted.
+
+.TP
+.B \-i
+(ignored)
+Ignore dots alone on lines by themselves in incoming messages.
+This should be set if you are reading data from a file.
+
+.TP
+.BI "\-L " tag
+(ignored)
+Set the identifier used in syslog messages to the supplied
+.IR tag .
+
+.TP
+.BI "\-N " dsn
+Set delivery status notification conditions to
+.IR dsn ,
+which can be 
+`never' 
+for no notifications 
+or a comma separated list of the values 
+`failure' 
+to be notified if delivery failed, 
+`delay'
+to be notified if delivery is delayed, and 
+`success' 
+to be notified when the message is successfully delivered.
+
+.TP
+.B \-n
+(ignored)
+Don't do aliasing.
+
+.TP
+\fB\-O\fP \fIoption\fR=\fIvalue\fR 
+(ignored)
+Set option
+.I option
+to the specified
+.IR value .
+This form uses long names.  See below for more details.
+
+.TP
+.BI \-o "x value"
+(ignored)
+Set option
+.I x
+to the specified
+.IR value .
+This form uses single character names only.  
+The short names are not described in this manual page; 
+see the
+.I "Sendmail Installation and Operation Guide"
+for details.
+
+.TP
+.BI \-p protocol
+(ignored)
+Set the name of the protocol used to receive the message.  
+This can be a simple protocol name such as ``UUCP'' 
+or a protocol and hostname, such as ``UUCP:ucbvax''.
+
+.TP
+\fB\-q\fR[\fItime\fR] 
+(ignored)
+Process saved messages in the queue at given intervals.  
+If
+.I time
+is omitted, process the queue once.
+.I Time
+is given as a tagged number, 
+with 
+`s' 
+being seconds, 
+`m' 
+being minutes (default), 
+`h' 
+being hours, 
+`d' 
+being days, 
+and 
+`w' 
+being weeks.
+For example, 
+`\-q1h30m' 
+or 
+`\-q90m' 
+would both set the timeout to one hour thirty minutes.
+By default,
+.B sendmail
+will run in the background.
+This option can be used safely with
+.BR \-bd .
+
+.TP
+\fB\-qp\fR[\fItime\fR] 
+(ignored)
+Similar to \fB\-q\fItime\fR,
+except that instead of periodically forking a child to process the queue,
+sendmail forks a single persistent child for each queue
+that alternates between processing the queue and sleeping.
+The sleep time is given as the argument; it defaults to 1 second.
+The process will always sleep at least 5 seconds if the queue was
+empty in the previous queue run.
+
+.TP
+\fB\-q\fRf
+(ignored)
+Process saved messages in the queue once and do not fork(),
+but run in the foreground.
+
+.TP
+\fB\-q\fRG name
+(ignored)
+Process jobs in queue group called
+.I name
+only.
+
+.TP
+\fB\-q\fR[\fI!\fR]I substr
+(ignored)
+Limit processed jobs to those containing
+.I substr
+as a substring of the queue id or not when
+.I !
+is specified.
+
+.TP
+\fB\-q\fR[\fI!\fR]R substr
+(ignored)
+Limit processed jobs to those containing
+.I substr
+as a substring of one of the recipients or not when
+.I !
+is specified.
+
+.TP
+\fB\-q\fR[\fI!\fR]S substr
+(ignored)
+Limit processed jobs to those containing
+.I substr
+as a substring of the sender or not when
+.I !
+is specified.
+
+.TP
+.BI "\-R " return
+(ignored)
+Set the amount of the message to be returned 
+if the message bounces.
+The
+.I return
+parameter can be 
+`full' 
+to return the entire message or 
+`hdrs' 
+to return only the headers.  
+In the latter case also local bounces return only the headers.
+
+.TP
+.BI \-r name
+An alternate and obsolete form of the
+.B \-f
+flag.
+
+.TP
+.B \-t
+(unsupported)
+Read message for recipients.  
+To:, Cc:, and Bcc: lines will be scanned for recipient addresses.  
+The Bcc: line will be deleted before transmission.
+
+.TP
+.BI "\-V " envid
+(ignored)
+Set the original envelope id.  
+This is propagated across SMTP to servers that support DSNs 
+and is returned in DSN-compliant error messages.
+
+.TP
+.B \-v
+Go into verbose mode.  
+Alias expansions will be announced, etc.
+
+.TP
+.BI "\-X " logfile
+(ignored)
+Log all traffic in and out of mailers in the indicated log file.
+This should only be used as a last resort 
+for debugging mailer bugs.  
+It will log a lot of data very quickly.
+
+.TP
+.B \-\-
+Stop processing command flags and use the rest of the arguments as
+addresses.
+.SH FILES
+.TP
+ ~/.esmtp
+configuration file
+
+.SH SEE ALSO
+fetchmail(1)
+
+.SH DIAGNOSTICS
+
+.SH AUTHORS
+José Fonseca (j_r_fonseca@yahoo.co.uk)
+Brian Stafford (brian@stafford.uklinux.net)
+
+.SH BUGS
+.B esmtp
+ignores most of sendmail options.
diff --git a/lexer.l b/lexer.l
new file mode 100644
index 0000000..e8a2be9
--- /dev/null
+++ b/lexer.l
@@ -0,0 +1,129 @@
+%{
+/*
+ * lexer.l -- lexer for the rcfile
+ */
+
+/*
+ * Adapted from fetchmail's rcfile_l.l by José Fonseca
+ */
+ 
+#include <stdio.h>
+#include <string.h>
+
+#include "parser.h"
+
+#define MSGBUFSIZE 8192
+
+int lineno = 1;
+
+void escapes(const char *tp, char *cp);
+
+%}
+
+%s NAME
+
+%%
+
+\"[^\"]*\"	{
+			char buf[MSGBUFSIZE];
+
+			yytext[strlen(yytext)-1] = '\0';
+			escapes(yytext+1, buf);
+			yylval.sval = (char *) strdup(buf);
+                        BEGIN(0);
+			return STRING;
+		}
+\'[^\']*\'	{
+			char buf[MSGBUFSIZE];
+
+			yytext[strlen(yytext)-1] = '\0';
+			escapes(yytext+1, buf);
+			yylval.sval = (char *) strdup(buf);
+                        BEGIN(0);
+			return STRING;
+		}
+
+<NAME>[^=;, \t\r\n]+	{
+			char buf[MSGBUFSIZE];
+
+			escapes(yytext, buf);
+			yylval.sval = (char *) strdup(buf);
+                        BEGIN(0);
+			return STRING;
+		}
+
+
+
+host(name)?	{ BEGIN(NAME); return HOSTNAME; }
+user(name)?	{ BEGIN(NAME); return USERNAME; }
+pass(word)?	{ BEGIN(NAME); return PASSWORD; }
+(start)?tls	{ return STARTTLS; }
+(certificate_)?passphrase	{ return CERTIFICATE_PASSPHRASE; }
+
+=		{ return MAP; }
+
+disabled	{ return DISABLED; }
+enabled		{ return ENABLED; }
+required	{ return REQUIRED; }
+
+(#.*)?\\?\n	{ lineno++; }   /* newline is ignored */
+
+-?[0-9]+/[^a-zA-Z]	{ yylval.number = atoi(yytext); return NUMBER; }
+
+[^=;:, \t\r\n]+	{
+			char buf[MSGBUFSIZE];
+
+			escapes(yytext, buf);
+			yylval.sval = (char *) strdup(buf);
+			return STRING;
+		}
+
+[ \t\r]+	;	/* whitespace */
+
+%%
+
+void escapes(cp, tp)
+/* process standard C-style escape sequences in a string */
+const char	*cp;	/* source string with escapes */
+char		*tp;	/* target buffer for digested string */
+{
+    while (*cp)
+    {
+	int	cval = 0;
+
+	if (*cp == '\\' && strchr("0123456789xX", cp[1]))
+	{
+	    char *dp;
+	    const char *hex = "00112233445566778899aAbBcCdDeEfF";
+	    int dcount = 0;
+
+	    if (*++cp == 'x' || *cp == 'X')
+		for (++cp; (dp = strchr(hex, *cp)) && (dcount++ < 2); cp++)
+		    cval = (cval * 16) + (dp - hex) / 2;
+	    else if (*cp == '0')
+		while (strchr("01234567",*cp) != (char*)NULL && (dcount++ < 3))
+		    cval = (cval * 8) + (*cp++ - '0');
+	    else
+		while ((strchr("0123456789",*cp)!=(char*)NULL)&&(dcount++ < 3))
+		    cval = (cval * 10) + (*cp++ - '0');
+	}
+	else if (*cp == '\\')		/* C-style character escapes */
+	{
+	    switch (*++cp)
+	    {
+	    case '\\': cval = '\\'; break;
+	    case 'n': cval = '\n'; break;
+	    case 't': cval = '\t'; break;
+	    case 'b': cval = '\b'; break;
+	    case 'r': cval = '\r'; break;
+	    default: cval = *cp;
+	    }
+	    cp++;
+	}
+	else
+	    cval = *cp++;
+	*tp++ = cval;
+    }
+    *tp = '\0';
+}
+
diff --git a/main.c b/main.c
new file mode 100644
index 0000000..aa041eb
--- /dev/null
+++ b/main.c
@@ -0,0 +1,482 @@
+/*
+ *  A libESMTP Example Application.
+ *  Copyright (C) 2001,2002  Brian Stafford <brian@stafford.uklinux.net>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published
+ *  by the Free Software Foundation; either version 2 of the License,
+ *  or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/* This program attemps to mimic the sendmail program behavior using libESMTP.
+ * 
+ * Adapted from the libESMTP's mail-file example by José Fonseca.
+ */
+#define _XOPEN_SOURCE 500
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <string.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <errno.h>
+
+#include <auth-client.h>
+#include <libesmtp.h>
+
+char *from = NULL;
+char *host = NULL;
+char *user = NULL;
+char *pass = NULL;
+enum starttls_option starttls = Starttls_DISABLED;
+char *certificate_passphrase = NULL;
+
+extern void parse_rcfile(void);
+
+/* Callback function to read the message from a file.  Since libESMTP
+   does not provide callbacks which translate line endings, one must
+   be provided by the application.
+
+   The message is read a line at a time and the newlines converted
+   to \r\n.  Unfortunately, RFC 822 states that bare \n and \r are
+   acceptable in messages and that individually they do not constitute a
+   line termination.  This requirement cannot be reconciled with storing
+   messages with Unix line terminations.  RFC 2822 rescues this situation
+   slightly by prohibiting lone \r and \n in messages.
+
+   The following code cannot therefore work correctly in all situations.
+   Furthermore it is very inefficient since it must search for the \n.
+ */
+#define BUFLEN	8192
+
+const char *
+readlinefp_cb (void **buf, int *len, void *arg)
+{
+  int octets;
+
+  if (*buf == NULL)
+    *buf = malloc (BUFLEN);
+
+  if (len == NULL)
+    {
+      rewind ((FILE *) arg);
+      return NULL;
+    }
+
+  if (fgets (*buf, BUFLEN - 2, (FILE *) arg) == NULL)
+    octets = 0;
+  else
+    {
+      char *p = strchr (*buf, '\0');
+
+      if (p[-1] == '\n' && p[-2] != '\r')
+        {
+	  strcpy (p - 1, "\r\n");
+	  p++;
+        }
+      octets = p - (char *) *buf;
+    }
+  *len = octets;
+  return *buf;
+}
+
+void
+monitor_cb (const char *buf, int buflen, int writing, void *arg)
+{
+  FILE *fp = arg;
+
+  if (writing == SMTP_CB_HEADERS)
+    {
+      fputs ("H: ", fp);
+      fwrite (buf, 1, buflen, fp);
+      return;
+    }
+
+ fputs (writing ? "C: " : "S: ", fp);
+ fwrite (buf, 1, buflen, fp);
+ if (buf[buflen - 1] != '\n')
+   putc ('\n', fp);
+}
+
+void
+usage (void)
+{
+  fputs ("usage: esmtp [options] mailbox [mailbox ...]\n",
+         stderr);
+}
+
+void
+version (void)
+{
+  char buf[32];
+
+  smtp_version (buf, sizeof buf, 0);
+  printf ("libESMTP version %s\n", buf);
+}
+
+/* Callback to request user/password info.  Not thread safe. */
+int
+authinteract (auth_client_request_t request, char **result, int fields,
+              void *arg)
+{
+  int i;
+
+  for (i = 0; i < fields; i++)
+    {
+      if (request[i].flags & AUTH_USER && user)
+	result[i] = user;
+      else if (request[i].flags & AUTH_PASS && pass)
+	result[i] = pass;
+      else
+	return 0;
+    }
+  return 1;
+}
+
+int
+tlsinteract (char *buf, int buflen, int rwflag, void *arg)
+{
+  char *pw;
+  int len;
+
+  if (certificate_passphrase)
+    {
+      pw = certificate_passphrase;
+      len = strlen (pw);
+      if (len + 1 > buflen)
+	return 0;
+      strcpy (buf, pw);
+      return len;
+    }
+  else
+    return 0;
+}
+
+/* Callback to print the recipient status */
+void
+print_recipient_status (smtp_recipient_t recipient,
+			const char *mailbox, void *arg)
+{
+  const smtp_status_t *status;
+
+  status = smtp_recipient_status (recipient);
+  fprintf (stderr, "%s: %d %s\n", mailbox, status->code, status->text);
+}
+
+int
+main (int argc, char **argv)
+{
+  smtp_session_t session;
+  smtp_message_t message;
+  smtp_recipient_t recipient;
+  auth_context_t authctx;
+  const smtp_status_t *status;
+  struct sigaction sa;
+  int c;
+  int ret;
+  enum notify_flags notify = Notify_NOTSET;
+
+  /* Parse the rc file. */
+  parse_rcfile();
+
+  /* This program sends only one message at a time.  Create an SMTP
+     session and add a message to it. */
+  auth_client_init ();
+  session = smtp_create_session ();
+  message = smtp_add_message (session);
+
+  while ((c = getopt (argc, argv, 
+	  	      "A:B:b:C:cd:e:F:f:Gh:IiL:M:mN:nO:o:p:q:R:r:sTtV:vX:")) != EOF)
+    switch (c)
+      {
+      case 'A':
+	/* Use alternate sendmail/submit.cf */
+        break;
+
+      case 'B':
+	/* Body type */
+        break;
+
+      case 'C':
+	/* Select configuration file */
+        break;
+
+      case 'F':
+	/* Set full name */
+        break;
+
+      case 'G':
+	/* Relay (gateway) submission */
+        break;
+
+      case 'I':
+	/* Initialize alias database */
+        break;
+
+      case 'L':
+	/* Program label */
+        break;
+
+      case 'M':
+	/* Define macro */
+        break;
+
+      case 'N':
+	/* Delivery status notifications */
+        if (strcmp (optarg, "never") == 0)
+          notify = Notify_NEVER;
+	else 
+	  {
+	    if (strstr (optarg, "failure"))
+	      notify |= Notify_FAILURE;
+	    if (strstr (optarg, "delay"))
+	      notify |= Notify_DELAY;
+	    if (strstr (optarg, "success"))
+	      notify |= Notify_SUCCESS;
+	  }
+        break;
+
+      case 'R':
+	/* What to return */
+        break;
+
+      case 'T':
+	/* Set timeout interval */
+        break;
+
+      case 'X':
+	/* Traffic log file */
+        break;
+
+      case 'V':
+	/* Set original envelope id */
+        break;
+
+      case 'b':
+	/* Operations mode */
+        break;
+
+      case 'c':
+	/* Connect to non-local mailers */
+        break;
+
+      case 'd':
+	/* Debugging */
+        break;
+
+      case 'e':
+	/* Error message disposition */
+        break;
+
+      case 'f':
+	/* From address */
+      case 'r':
+	/* Obsolete -f flag */
+        from = optarg;
+        break;
+
+      case 'h':
+	/* Hop count */
+        break;
+
+      case 'i':
+	/* Don't let dot stop me */
+        break;
+
+      case 'm':
+	/* Send to me too */
+        break;
+
+      case 'n':
+	/* don't alias */
+        break;
+
+      case 'o':
+	/* Set option */
+        break;
+
+      case 'p':
+	/* Set protocol */
+        break;
+
+      case 'q':
+	/* Run queue files at intervals */
+        if (optarg[0] == '!')
+	  {
+	    /* Negate the meaning of pattern match */
+	    optarg++;
+	  }
+
+	switch (optarg[0])
+	  {
+	    case 'G':
+	      /* Limit by queue group name */
+	      break;
+
+	    case 'I':
+	      /* Limit by ID */
+	      break;
+
+	    case 'R':
+	      /* Limit by recipient */
+	      break;
+
+	    case 'S':
+	      /* Limit by sender */
+	      break;
+
+	    case 'f':
+	      /* Forground queue run */
+	      break;
+
+	    case 'p':
+	      /* Persistent queue */
+	      if (optarg[1] == '\0')
+		break;
+	      ++optarg;
+
+	    default:
+	      break;
+	  }
+	break;
+
+      case 's':
+	/* Save From lines in headers */
+        break;
+
+      case 't':
+	/* Read recipients from message */
+	fprintf (stderr, "Unsupported option 't'\n");
+	exit (2);
+        break;
+
+      case 'v':
+	/* Verbose */
+        smtp_set_monitorcb (session, monitor_cb, stdout, 1);
+	break;
+	
+      default:
+        usage ();
+        exit (2);
+      }
+
+  /* At least one more argument is needed.
+   */
+  if (optind > argc - 1)
+    {
+      usage ();
+      exit (2);
+    }
+
+  /* NB.  libESMTP sets timeouts as it progresses through the protocol.
+     In addition the remote server might close its socket on a timeout.
+     Consequently libESMTP may sometimes try to write to a socket with
+     no reader.  Ignore SIGPIPE, then the program doesn't get killed
+     if/when this happens. */
+  sa.sa_handler = SIG_IGN;
+  sigemptyset (&sa.sa_mask);
+  sa.sa_flags = 0;
+  sigaction (SIGPIPE, &sa, NULL); 
+
+  /* Set the SMTP Starttls extension. */
+  smtp_starttls_enable (session, starttls);
+
+  /* Set the host running the SMTP server.  LibESMTP has a default port
+     number of 587, however this is not widely deployed so the port
+     is specified as 25 along with the default MTA host. */
+  smtp_set_server (session, host ? host : "localhost:25");
+
+  /* Do what's needed at application level to use authentication.
+   */
+  authctx = auth_create_context ();
+  auth_set_mechanism_flags (authctx, AUTH_PLUGIN_PLAIN, 0);
+  auth_set_interact_cb (authctx, authinteract, NULL);
+
+  /* Use our callback for X.509 certificate passwords.  If STARTTLS is
+     not in use or disabled in configure, the following is harmless. */
+  smtp_starttls_set_password_cb (tlsinteract, NULL);
+
+  /* Now tell libESMTP it can use the SMTP AUTH extension.
+   */
+  smtp_auth_set_context (session, authctx);
+
+  /* Set the reverse path for the mail envelope.  (NULL is ok)
+   */
+  smtp_set_reverse_path (message, from);
+
+  /* Open the message file and set the callback to read it.
+   */
+#if 0
+  smtp_set_message_fp (message, stdin);
+#else
+  smtp_set_messagecb (message, readlinefp_cb, stdin);
+#endif
+
+  /* At present it can't handle one recipient only out of many
+     failing.  Make libESMTP require all specified recipients to
+     succeed before transferring a message.  */
+  smtp_option_require_all_recipients (session, 1);
+    
+  /* Add remaining program arguments as message recipients.
+   */
+  while (optind < argc)
+    {
+      recipient = smtp_add_recipient (message, argv[optind++]);
+
+      /* Recipient options set here */
+      if (notify != Notify_NOTSET)
+        smtp_dsn_set_notify (recipient, notify);
+    }
+
+  /* Initiate a connection to the SMTP server and transfer the
+     message. */
+  if (!smtp_start_session (session))
+    {
+      char buf[128];
+
+      fprintf (stderr, "SMTP server problem %s\n",
+	       smtp_strerror (smtp_errno (), buf, sizeof buf));
+      
+      ret = 1;
+    }
+  else
+    {
+      /* Report on the success or otherwise of the mail transfer.
+       */
+      status = smtp_message_transfer_status (message);
+      if (status->code / 100 == 2)
+        {
+	  ret = 0;
+      	}
+      else
+        {
+	  /* Report on the failure of the mail transfer.
+	   */
+	  status = smtp_message_transfer_status (message);
+	  fprintf (stderr, "%d %s\n", status->code, status->text);
+	  smtp_enumerate_recipients (message, print_recipient_status, NULL);
+	  
+	  ret = 1;
+	}
+    }
+  
+  /* Free resources consumed by the program.
+   */
+  smtp_destroy_session (session);
+  auth_destroy_context (authctx);
+  auth_client_exit ();
+  exit (ret);
+}
+
diff --git a/parser.y b/parser.y
new file mode 100644
index 0000000..5426675
--- /dev/null
+++ b/parser.y
@@ -0,0 +1,116 @@
+%{
+/*
+ * parser.y -- parser for the rcfile
+ */
+
+/*
+ * Adapted from fetchmail's rcfile_y.y by José Fonseca
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <libesmtp.h>
+
+/* parser reads these */
+char *rcfile = NULL;		/* path name of dot file */
+
+/* parser sets these */
+int yydebug;			/* in case we didn't generate with -- debug */
+
+extern char *host;
+extern char *user;
+extern char *pass;
+extern enum starttls_option starttls;
+extern char *certificate_passphrase;
+
+/* using Bison, this arranges that yydebug messages will show actual tokens */
+extern char * yytext;
+#define YYPRINT(fp, type, val)	fprintf(fp, " = \"%s\"", yytext)
+%}
+
+%union {
+  int number;
+  char *sval;
+}
+
+%token HOSTNAME USERNAME PASSWORD STARTTLS CERTIFICATE_PASSPHRASE 
+
+%token MAP
+
+%token DISABLED ENABLED REQUIRED
+%token <sval>  STRING
+%token <number> NUMBER
+
+%%
+
+rcfile		: /* empty */
+		| statement_list
+		;
+
+statement_list	: statement
+		| statement_list statement
+		;
+
+/* future global options should also have the form SET <name> optmap <value> */
+statement	: HOSTNAME MAP STRING	{ host = strdup($3); }
+		| USERNAME MAP STRING	{ user = strdup($3); }
+		| PASSWORD MAP STRING	{ pass = strdup($3); }
+		| STARTTLS MAP DISABLED	{ starttls = Starttls_DISABLED; }
+		| STARTTLS MAP ENABLED	{ starttls = Starttls_ENABLED; }
+		| STARTTLS MAP REQUIRED	{ starttls = Starttls_REQUIRED; }
+		| CERTIFICATE_PASSPHRASE MAP STRING	{ certificate_passphrase = strdup($3); }
+		;
+
+%%
+
+/* lexer interface */
+extern char *rcfile;
+extern int lineno;
+extern char *yytext;
+extern FILE *yyin;
+
+void yyerror (const char *s)
+/* report a syntax error */
+{
+    fprintf(stderr, "%s:%d: %s at %s\n", rcfile, lineno, s, 
+		   (yytext && yytext[0]) ? yytext : "end of input");
+}
+
+#define RCFILE ".esmtprc"
+void parse_rcfile (void)
+{
+    char *home;
+
+    /* Setup the rcfile name. */
+    if (!(home = getenv("HOME")))
+   	return;
+	
+    if (!(rcfile = malloc(strlen(home) + sizeof(RCFILE) + 2)))
+    	return;
+
+    strcpy(rcfile, home);
+    if (rcfile[strlen(rcfile) - 1] != '/')
+      strcat(rcfile, "/");
+    strcat(rcfile, RCFILE);
+  
+    /* Open the configuration file and feed it to the lexer. */
+    if (!(yyin = fopen(rcfile, "r"))) {
+    	if (errno != ENOENT) {
+	    fprintf(stderr, "open: %s: %s\n", rcfile, strerror(errno));
+	}
+    }
+    else 
+    {
+	yyparse();		/* parse entire file */
+
+	fclose(yyin);	/* not checking this should be safe, file mode was r */
+    }
+    
+    free(rcfile);
+}
+
+/* easier to do this than cope with variations in where the library lives */
+int yywrap(void) { return 1; }
diff --git a/sample.esmtprc b/sample.esmtprc
new file mode 100644
index 0000000..a5343f2
--- /dev/null
+++ b/sample.esmtprc
@@ -0,0 +1,15 @@
+#set SMTP host and service (port)
+hostname = localhost:25
+
+# set the user name
+username = "USERNAME"
+
+# set the password
+password = "PASSWORD"
+
+# use the Starttls
+#starttls = { enabled | disabled | required }
+
+# set the certificate passphrase
+#certificate_passphrase = "CERTIFICATE_PASSPHRASE"
+