From 28eb4d0723bde7b94ea52faf0ec2708adf47fde2 Mon Sep 17 00:00:00 2001 From: Eric Wong Date: Thu, 27 Mar 2014 20:38:26 +0000 Subject: [PATCH 1/1] initial commit --- .gitignore | 7 + COPYING | 661 +++++++++++++++++++++++++++++ Documentation/.gitignore | 3 + Documentation/GNUmakefile | 45 ++ Documentation/ssoma-mda.txt | 44 ++ Documentation/ssoma-rm.txt | 33 ++ Documentation/ssoma.txt | 85 ++++ Documentation/ssoma_repository.txt | 161 +++++++ INSTALL | 31 ++ MANIFEST | 28 ++ Makefile.PL | 41 ++ README | 104 +++++ lib/Ssoma/Extractor.pm | 178 ++++++++ lib/Ssoma/Git.pm | 278 ++++++++++++ lib/Ssoma/GitIndexInfo.pm | 47 ++ lib/Ssoma/IMAP.pm | 112 +++++ lib/Ssoma/MDA.pm | 133 ++++++ lib/Ssoma/Remover.pm | 70 +++ ssoma | 264 ++++++++++++ ssoma-mda | 21 + ssoma-rm | 19 + t/all.t | 198 +++++++++ t/extractor.t | 192 +++++++++ t/git.t | 61 +++ t/imap.t | 8 + t/mda-badheaders.t | 58 +++ t/mda-conflict.t | 106 +++++ t/mda-missing-mid.t | 26 ++ t/remover.t | 87 ++++ 29 files changed, 3101 insertions(+) create mode 100644 .gitignore create mode 100644 COPYING create mode 100644 Documentation/.gitignore create mode 100644 Documentation/GNUmakefile create mode 100644 Documentation/ssoma-mda.txt create mode 100644 Documentation/ssoma-rm.txt create mode 100644 Documentation/ssoma.txt create mode 100644 Documentation/ssoma_repository.txt create mode 100644 INSTALL create mode 100644 MANIFEST create mode 100644 Makefile.PL create mode 100644 README create mode 100644 lib/Ssoma/Extractor.pm create mode 100644 lib/Ssoma/Git.pm create mode 100644 lib/Ssoma/GitIndexInfo.pm create mode 100644 lib/Ssoma/IMAP.pm create mode 100644 lib/Ssoma/MDA.pm create mode 100644 lib/Ssoma/Remover.pm create mode 100755 ssoma create mode 100755 ssoma-mda create mode 100755 ssoma-rm create mode 100644 t/all.t create mode 100644 t/extractor.t create mode 100644 t/git.t create mode 100644 t/imap.t create mode 100644 t/mda-badheaders.t create mode 100644 t/mda-conflict.t create mode 100644 t/mda-missing-mid.t create mode 100644 t/remover.t diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..0c5ad52 --- /dev/null +++ b/.gitignore @@ -0,0 +1,7 @@ +/Makefile.old +/pm_to_blib +/MYMETA.yml +/Makefile +/blib +/cover_db +*.gz diff --git a/COPYING b/COPYING new file mode 100644 index 0000000..dba13ed --- /dev/null +++ b/COPYING @@ -0,0 +1,661 @@ + GNU AFFERO GENERAL PUBLIC LICENSE + Version 3, 19 November 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU Affero General Public License is a free, copyleft license for +software and other kinds of works, specifically designed to ensure +cooperation with the community in the case of network server software. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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It is safest +to attach them to the start of each source file to most effectively +state the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU Affero General Public License as published by + the Free Software Foundation, either version 3 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 Affero General Public License for more details. + + You should have received a copy of the GNU Affero General Public License + along with this program. If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If your software can interact with users remotely through a computer +network, you should also make sure that it provides a way for users to +get its source. For example, if your program is a web application, its +interface could display a "Source" link that leads users to an archive +of the code. There are many ways you could offer source, and different +solutions will be better for different programs; see section 13 for the +specific requirements. + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU AGPL, see +. diff --git a/Documentation/.gitignore b/Documentation/.gitignore new file mode 100644 index 0000000..56fdc90 --- /dev/null +++ b/Documentation/.gitignore @@ -0,0 +1,3 @@ +*.1 +*.5 +*.7 diff --git a/Documentation/GNUmakefile b/Documentation/GNUmakefile new file mode 100644 index 0000000..4c808e0 --- /dev/null +++ b/Documentation/GNUmakefile @@ -0,0 +1,45 @@ +# Copyright (C) 2013, Eric Wong and all contributors +# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt) +all:: + +INSTALL = install +PANDOC = pandoc +PANDOC_OPTS = -f markdown --email-obfuscation=none +pandoc = $(PANDOC) $(PANDOC_OPTS) + +m1 = +m1 += ssoma +m1 += ssoma-mda +m1 += ssoma-rm + +m5 = +m5 += ssoma_repository + +m7 = + +man1 := $(addsuffix .1, $(m1)) +man5 := $(addsuffix .5, $(m5)) +man7 := $(addsuffix .7, $(m7)) + +all:: man + +man: $(man1) $(man5) $(man7) + +prefix ?= $(HOME) +mandir ?= $(prefix)/share/man +man1dir = $(mandir)/man1 +man5dir = $(mandir)/man5 +man7dir = $(mandir)/man7 + +install-man: man + test -z "$(man1)" || $(INSTALL) -d -m 755 $(DESTDIR)$(man1dir) + test -z "$(man5)" || $(INSTALL) -d -m 755 $(DESTDIR)$(man5dir) + test -z "$(man7)" || $(INSTALL) -d -m 755 $(DESTDIR)$(man7dir) + test -z "$(man1)" || $(INSTALL) -m 644 $(man1) $(DESTDIR)$(man1dir) + test -z "$(man5)" || $(INSTALL) -m 644 $(man5) $(DESTDIR)$(man5dir) + test -z "$(man7)" || $(INSTALL) -m 644 $(man7) $(DESTDIR)$(man7dir) +%.1 %.5 %.7 : %.txt + $(pandoc) -s -t man < $< > $@+ && mv $@+ $@ + +clean:: + $(RM) $(man1) $(man5) $(man7) diff --git a/Documentation/ssoma-mda.txt b/Documentation/ssoma-mda.txt new file mode 100644 index 0000000..0ef1501 --- /dev/null +++ b/Documentation/ssoma-mda.txt @@ -0,0 +1,44 @@ +% ssoma-mda(1) ssoma user manual + +# NAME + +ssoma-mda - mail delivery agent for ssoma + +# SYNOPSIS + +ssoma-mda /path/to/ssoma/repository.git < message + +# DESCRIPTION + +ssoma-mda delivers messages to a git repository as described by +ssoma_repository(5). It reads messages from STDIN and takes no +command-line arguments. It may be invoked by the MTA (mail transport +agent, e.g. postfix or exim) or as part of another MDA (e.g. procmail or +maildrop) + +ssoma-mda takes no command-line options and does not alter its own +permissions. This must be done by the MTA or MDA which invokes +ssoma-mda. + +# FILES + +See ssoma_repository(5) for details. + +# ENVIRONMENT + +ssoma-mda depends on no environment variables + +# CONTACT + +All feedback welcome via plain-text mail to \ +The mail archives are hosted at git://public-inbox.org/ssoma +See ssoma(1) for instructions on how to subscribe. + +# COPYRIGHT + +Copyright 2013, Eric Wong and all contributors.\ +License: AGPLv3 or later + +# SEE ALSO + +git(1), ssoma(1), ssoma_repository(5) diff --git a/Documentation/ssoma-rm.txt b/Documentation/ssoma-rm.txt new file mode 100644 index 0000000..89255fc --- /dev/null +++ b/Documentation/ssoma-rm.txt @@ -0,0 +1,33 @@ +% ssoma-rm(1) ssoma user manual + +# NAME + +ssoma-rm - remove messages from a ssoma repository + +# SYNOPSIS + +ssoma-rm /path/to/ssoma/repository.git < message + +# DESCRIPTION + +ssoma-rm removes messages from a ssoma repository. It only deletes +messages which match the Message-ID, Subject, and body of the email. +Thus the output of "ssoma cat" is ideal for ssoma-rm. ssoma-rm only +works on the latest HEAD (refs/heads/master) of the ssoma repository. +It does not remove the message from history, but prevents future users +of "ssoma sync" from seeing the message in their mailbox. + +# CONTACT + +All feedback welcome via plain-text mail to \ +The mail archives are hosted at git://public-inbox.org/ssoma +See ssoma(1) for instructions on how to subscribe. + +# COPYRIGHT + +Copyright 2013, Eric Wong and all contributors.\ +License: AGPLv3 or later + +# SEE ALSO + +git(1), ssoma(1), ssoma_repository(5) diff --git a/Documentation/ssoma.txt b/Documentation/ssoma.txt new file mode 100644 index 0000000..3fab29b --- /dev/null +++ b/Documentation/ssoma.txt @@ -0,0 +1,85 @@ +% ssoma(1) ssoma user manual + +# NAME + +ssoma - mail archive synchronization and extraction client + +# SYNOPSIS + +ssoma add LISTNAME URL maildir:/path/to/maildir/ +ssoma add LISTNAME URL mbox:/path/to/mbox +ssoma add LISTNAME URL imap://USER@HOST/INBOX +ssoma sync [LISTNAME] +ssoma cat MESSAGE-ID [LISTNAME|GIT_DIR] + +# DESCRIPTION + +The client component of ssoma may be used to sync and export mail to Maildir +or mbox(5) from any published ssoma git repository. + +* add LISTNAME URL DESTINATION + +This starts a subscription to a mailing list by configuring a git +repository. LISTNAME is a name of your choosing. It must only consist +of alphanumeric characters, underscores, periods and dashes, and must start +and end with an alphanumeric character. URL is the URL to a git repository, +this supports all URLs git(7) supports. DESTINATION is the local +destination to extract mail to. This may be a maildir:, mbox: path, +or an imap:// or imaps:// URL. +. +The repository is stored in ~/.ssoma/$LISTNAME.git If at any time +a user wishes to stop following the list, just remove the git repository +from your file system. +. +IMAP users may configure the imap.pass and imap.tunnel variables in +~/.ssoma/$LISTNAME.git/config in the same way as git-imap-send(1). +Remember to restrict permissions to ~/.ssoma/$LISTNAME.git/config +if you are storing a password in it. + +* sync [LISTNAME] + +This clones/fetches from the remote git repository into the local +repository and extracts messages into destinations configured with the +"add" sub-command. If LISTNAME is not given, all list subscriptions are +synchronized. If LISTNAME is given, only subscriptions for a given LISTNAME +is synchronized. + +* cat MESSAGE-ID [LISTNAME|GIT_DIR] + +This outputs the message matching MESSAGE-ID to stdout (in mbox format). +If LISTNAME is given, this limits the Message-ID search to that list. +. +Specifying a GIT_DIR in place of LISTNAME is also possible, this is +intended for administrators using ssoma-rm(1). + +# FILES + +All client-side git repositories are stored in ~/.ssoma/$LISTNAME.git/ +See ssoma_repository(5) for details. + +# ENVIRONMENT VARIABLES + +SSOMA_HOME may be used to override the default ~/.ssoma/ directory. +This is useful for testing, but not recommended otherwise. + +# CONTACT + +All feedback welcome via plain-text mail to \ +The mail archives are hosted at git://public-inbox.org/ssoma +You may subscribe using ssoma: + + ssoma add ssoma git://public-inbox.org/ssoma mbox:/path/to/mbox + ssoma sync ssoma + +# SOURCE CODE + + git clone git://bogomips.org/ssoma + +# COPYRIGHT + +Copyright 2013, Eric Wong and all contributors.\ +License: AGPLv3 or later + +# SEE ALSO + +git(1), ssoma_repository(5), ssoma-rm(1) diff --git a/Documentation/ssoma_repository.txt b/Documentation/ssoma_repository.txt new file mode 100644 index 0000000..45795ea --- /dev/null +++ b/Documentation/ssoma_repository.txt @@ -0,0 +1,161 @@ +% ssoma_repository(5) ssoma user manual + +# NAME + +ssoma_repository - repository and tree description for ssoma + +# DESCRIPTION + +ssoma uses a git repository to store each email as a git blob. The tree +filename of the blob is based on the SHA1 hexdigest of the Message-Id +header. A commit is made for each message delivered. The commit SHA-1 +identifier is used by ssoma clients to track synchronization state. + +# PATHNAMES IN TREES + +A Message-Id may be extremely long and also contain slashes, so using +them as a path name is challenging. Instead we use the SHA-1 hexdigest +of the Message-Id (including the "<" and ">") to generate a path name. +Leading and trailing white space in the Message-Id header is ignored +for hashing. + +A message with Message-Id of: <20131106023245.GA20224@dcvr.yhbt.net> + +Would be stored as: 21/4527ce3741f50bb9afa65e7c5003c8a8ddc4b1 + +Thus it is easy to look up the contents of a message matching a given +a Message-Id. + +# CONFLICTS + +Message-Id is a unique-enough identifier for practical purposes, but +they may still conflict (especially in case of malicious clients and +timing issues). In the case of identical Message-Id and different +messages, the blob shall become a tree with multiple messages. +Likewise, if there is a (rare) SHA-1 conflict on different Message-Id +headers, the tree will contain each message (with different Message-Id +headers). + +Thus the blobs for conflicting Message-Ids will be the SHA-1 hexdigest +of the Subject header and raw body (no extra whitespace delimiting the +two). + + PFX=21/4527ce3741f50bb9afa65e7c5003c8a8ddc4b1 + + $PFX/287d8b67bf8ebdb30e34cb4ca9995dbd465f37aa # first copy + $PFX/287d8b67bf8ebdb30e34cb4ca9995dbd465f37ab # second copy + $PFX/287d8b67bf8ebdb30e34cb4ca9995dbd465f37ac # third copy + +# LOCKING + +fcntl(2) locking exclusively locks the empty $GIT_DIR/ssoma.lock file +for all non-atomic operations. + +# EXAMPLE INPUT FLOW (SERVER-SIDE MDA) + +1. Message is delivered to a mail transport agent (MTA) +1a. (optional) reject/discard spam, this should run before ssoma-lda +1b. (optional) reject/strip unwanted attachments + +ssoma-mda handles all steps once invoked. + +2. Mail transport agent invokes ssoma-mda +3. reads message via stdin, extracting Message-Id +4. acquires fcntl lock on $GIT_DIR/ssoma.lock +5. creates or updates the blob of associated 2/38 SHA-1 path +6. updates the index and commits +7. releases $GIT_DIR/ssoma.lock + +ssoma-mda can also be used as an inotify(7) trigger to monitor maildirs, +and the ability to monitor IMAP mailboxes using IDLE will be available +in the future. + +# GIT REPOSITORIES (SERVERS) + +ssoma uses bare git repositories on both servers and clients. + +Using the git-init(1) command with --bare is the recommend method +of creating a git repository on a server: + + git init --bare /path/to/wherever/you/want.git + +There are no standardized paths for servers, administrators make +all the choices regarding git repository locations. + +Special files in $GIT_DIR on the server: + +* $GIT_DIR/ssoma.index - a git index file used for MDA updates, +: The normal git index (in $GIT_DIR/index) is not used at all as + there is typically no working tree. + +* $GIT_DIR/ssoma.lock - empty file for fcntl(2) locking +: This is necessary to ensure the index and commits are updated + consistently and multiple processes running MDA do not step on + each other. + +# GIT REPOSITORIES (CLIENTS) + +ssoma uses bare git repositories for clients (as well as servers). + +The default is to use GIT_DIR=~/.ssoma/$LISTNAME.git in the user's home +directory. This is a bare git repository with two additional files: + +* $GIT_DIR/ssoma.lock - empty lock file, same as used by ssoma-mda(1) +* $GIT_DIR/ssoma.state - a git-config(1) format file used by ssoma(1) + +Each client $GIT_DIR may have multiple mbox/maildir/command targets. +It is possible for a client to extract the mail stored in the git +repository to multiple mboxes for compatibility with a variety of +different tools. + +# $GIT_DIR/ssoma.state format. + + ; "local" is the default name (analogous to "origin" with remotes) + [target "local"] + path = /path/to/mbox + + ; this tells ssoma where to start the next import from + ; this means ssoma will not redundantly import old + ; messages and the user is free to move/delete old + ; messages from the mbox. + last-imported = 33eaf25f43fd73d8f4f7b0a066b689809d733191 + + ; "alt" is a user-defined name, in case a user wants to output + ; the repo in several formats + [target "alt"] + ; note the trailing '/' to denote the maildir path, + ; the Email::LocalDelivery Perl module depends on this + ; trailing slash to identify it as a maildir + path = /path/to/maildir/ + last-imported = 950815b313a4e616c6fe39f46b2e894b51d7d62f + + ; users may also choose to pipe to an arbitrary command of their + ; choice, this filter may behave like an MDA (and implement + ; filtering). Tools like procmail(1)/maildrop(1) may be + ; invoked here. + [target "script"] + command = /path/to/executable/which/reads-mail-from-stdin + last-imported = 950815b313a4e616c6fe39f46b2e894b51d7d62f + +# EXAMPLE OUTPUT FLOW (CLIENT) + +1. clone or fetches to bare git repo (GIT_DIR=~/.ssoma/$LISTNAME.git) +2. checks for last-imported commit in ~/.ssoma/$LISTNAME.git/ssoma.state +3. diffs last-imported commit with current HEAD +4. imports new emails to mbox/maildir since last-imported up to current HEAD +5. updates last-imported commit + +# CAVEATS + +It is NOT recommended to check out the working directory of a git. +there may be many files. + +It is impossible to completely expunge messages, even spam, as git +retains full history. Projects may (with adequate notice) cycle to new +repositories/branches with history cleaned up via git-filter-branch(1). +This is up to the administrators. + +# COPYRIGHT + +Copyright 2013, Eric Wong and all contributors.\ +License: AGPLv3 or later diff --git a/INSTALL b/INSTALL new file mode 100644 index 0000000..d55d773 --- /dev/null +++ b/INSTALL @@ -0,0 +1,31 @@ +standard MakeMaker installation (Perl) +-------------------------------------- + + perl Makefile.PL + make + make test + make install # root permissions may be needed + +Requirements (MUA client) +------------------------- +* git +* Perl and several modules: + - Email::LocalDelivery + - Email::Simple + - Net::IMAP::Simple + - Digest::SHA +* any MUA capable of reading/importing IMAP, mbox(5) or Maildir + +Requirements (server MDA) +------------------------- +* git +* MTA - postfix is recommended +* Perl and several modules: + - Email::Simple + - File::FcntlLock + - Digest::SHA + +Copyright +--------- +Copyright 2013, Eric Wong and all contributors. +License: AGPLv3 or later diff --git a/MANIFEST b/MANIFEST new file mode 100644 index 0000000..1a53078 --- /dev/null +++ b/MANIFEST @@ -0,0 +1,28 @@ +.gitignore +COPYING +Documentation/.gitignore +Documentation/GNUmakefile +Documentation/ssoma-mda.txt +Documentation/ssoma-rm.txt +Documentation/ssoma.txt +Documentation/ssoma_repository.txt +INSTALL +Makefile.PL +README +lib/Ssoma/Extractor.pm +lib/Ssoma/Git.pm +lib/Ssoma/GitIndexInfo.pm +lib/Ssoma/IMAP.pm +lib/Ssoma/MDA.pm +lib/Ssoma/Remover.pm +ssoma +ssoma-mda +ssoma-rm +t/all.t +t/extractor.t +t/git.t +t/imap.t +t/mda-badheaders.t +t/mda-conflict.t +t/mda-missing-mid.t +t/remover.t diff --git a/Makefile.PL b/Makefile.PL new file mode 100644 index 0000000..577e5b9 --- /dev/null +++ b/Makefile.PL @@ -0,0 +1,41 @@ +#!/usr/bin/perl +# Copyright (C) 2013, Eric Wong and all contributors +# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt) +# +# Note: this may be rewritten in another language in the future, +# so don't depend on any public Perl API +use strict; +use ExtUtils::MakeMaker; +WriteMakefile( + NAME => 'ssoma', + VERSION => '0.0.0', + AUTHOR => 'Eric Wong ', + ABSTRACT => 'some sort of mail archiver', + EXE_FILES => [qw/ssoma-mda ssoma ssoma-rm/], + PREREQ_PM => { + 'Email::LocalDelivery' => 0, + 'Email::Simple' => 0, + 'File::FcntlLock' => 0, + 'Net::IMAP::Simple' => 0, + 'Digest::SHA' => 0, + }, +); + +sub MY::postamble { + <<'EOF'; +RSYNC_DEST = ssoma.public-inbox.org:/srv/ssoma/ +docs = INSTALL README COPYING $(shell git ls-files Documentation/ '*.txt') +gz_docs = $(addsuffix .gz, $(docs)) +%.gz: % + gzip -9 --rsyncable < $< > $@+ + touch -r $< $@+ + mv $@+ $@ + +gz-docs: $(gz_docs) +rsync-docs: + git set-file-times $(docs) + $(MAKE) gz-docs + rsync --chmod=Fugo=r -av $(gz_docs) $(docs) $(RSYNC_DEST) + +EOF +} diff --git a/README b/README new file mode 100644 index 0000000..3aec620 --- /dev/null +++ b/README @@ -0,0 +1,104 @@ +ssoma - some sort of mail archiver +---------------------------------- + +ssoma is a git-based mail archiver and transport. Email is injected via +ssoma-mda(1) (MDA: mail delivery agent) on a server and may be shared +(via git) and extracted to mbox, Maildir, or IMAP via ssoma(1). It +exists primarily as the mechanism for public-inbox.org, but may easily +be used for other projects. + +See http://public-inbox.org/ for more information on how ssoma is used. + +Features +-------- +* stores email in git, so readers have a full history of the mailing list +* mail user-agent (MUA) users may choose from IMAP, mbox(5), and Maildir +* uses only well-documented and easy-to-implement data formats + +Requirements (MUA client) +------------------------- +* git +* Perl and several modules: + - Email::LocalDelivery + - Email::Simple + - Net::IMAP::Simple + - Digest::SHA +* any MUA capable of reading/importing IMAP, mbox(5) or Maildir archives + +Requirements (server MDA) +------------------------- +* git +* MTA - postfix is recommended +* Perl and several modules: + - Email::Simple + - File::FcntlLock + - Digest::SHA + +Hacking +------- +Source code is available via git: + + git clone git://bogomips.org/ssoma + +See below for contact info. + +Contact +------- +We are happy to see feedback of all types via plain-text email. +Please email comments, user/developer discussion, patches, bug reports, +and pull requests to our public ssoma instance at: + + ssoma@public-inbox.org + +Please Cc: all recipients when replying (this is not a requirement of +ssoma itself, but a good idea since we do not require subscription). +This also makes it easier to rope in folks of tangentially related +projects we depend on (e.g. git developers on git@vger.kernel.org). + +You can subscribe via ssoma, LISTNAME is a name of your choosing: + + URL=git://public-inbox.org/ssoma + LISTNAME=ssoma + + # to initialize a maildir (this may be a new or existing maildir, + # ssoma will not touch existing messages) + # If you prefer mbox, use mbox:/path/to/mbox as the last argument + ssoma add $LISTNAME $URL maildir:/path/to/maildir + + # read with your favorite MUA (only using mutt as an example) + mutt -f /path/to/maildir # (or /path/to/mbox) + + # to keep your mbox or maildir up-to-date, periodically run the following: + ssoma sync $LISTNAME + + # your MUA may modify and delete messages from the maildir or mbox, + # this does not affect ssoma functionality at all + + # to sync all your ssoma subscriptions + ssoma sync + +Mail repository format +---------------------- +If you are uncomfortable running code in ssoma for any reason and +would rather read directly from the git repository, the following +document describes it: + + http://ssoma.public-inbox.org/ssoma_repository.txt + +Copyright +--------- +Copyright 2013, Eric Wong and all contributors. +License: AGPLv3 or later + +This program is free software: you can redistribute it and/or modify +it under the terms of the GNU Affero General Public License as published by +the Free Software Foundation, either version 3 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU Affero General Public License for more details. + +You should have received a copy of the GNU Affero General Public License +along with this program. If not, see . diff --git a/lib/Ssoma/Extractor.pm b/lib/Ssoma/Extractor.pm new file mode 100644 index 0000000..f2ad752 --- /dev/null +++ b/lib/Ssoma/Extractor.pm @@ -0,0 +1,178 @@ +# Copyright (C) 2013, Eric Wong and all contributors +# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt) +# +# Extracts mail to an Mbox or Maildir +package Ssoma::Extractor; +use strict; +use warnings; +use Ssoma::Git; +use Email::LocalDelivery; + +sub new { + my ($class, $git) = @_; + bless { git => $git, ref => "refs/heads/master" }, $class; +} + +# runs a command which returns a list of files, no file name sanitization +# here needed since all of the path names stored in git trees are controlled +# by us (and based on SHA-1 hexdigest) +sub _flist { + my ($cmd) = @_; + my @rv = `$cmd`; + $? == 0 or die "$cmd failed: $?\n"; + chomp @rv; + \@rv +} + +sub _extract { + my ($self, $target) = @_; + my $git = $self->{git}; + + # read all of the state file + my $state = "$git->{git_dir}/ssoma.state"; + my $cfg = $git->config_list($state); + + my $pkey = "target.$target.path"; + my $path = $cfg->{$pkey}; + + my $ckey = "target.$target.command"; + my $command = $cfg->{$ckey}; + + my $ikey = "target.$target.imap"; + my $imap = $cfg->{$ikey}; + + my $lkey = "target.$target.last-imported"; + my $last = $cfg->{$lkey}; + + my $ref = $self->{ref}; + my $tip = $git->qx_sha1("git rev-parse $ref^0"); + + my $new; # arrayref of new file pathnames in a git tree + + if (defined $last) { + # only inject newly-added + $last =~ /\A[a-f0-9]{40}\z/ or die "$lkey invalid in $state\n"; + + # we don't want blob->tree conflict resolution in MDA + # tricking us into extracting the same message twice; + # MDA will keep the original in sufficiently-identical messages + my $cmd = "git diff-tree -r --name-only -M100% --diff-filter=A"; + $new = _flist("$cmd $last $tip"); + } else { + # new maildir or mbox (to us), import everything in the + # current tree + $new = _flist("git ls-tree -r --name-only $tip"); + } + + my $i = 0; + $i++ if defined $command; + $i++ if defined $path; + $i++ if defined $imap; + ($i > 1) and die + "only one of $pkey, $ckey, or $ikey may be defined in $state\n"; + + if (defined $command) { + $self->_run_for_each($command, $tip, $new) + } elsif (defined $path) { + $self->_deliver_each($path, $tip, $new); + } elsif (defined $imap) { + $self->_imap_deliver_each($tip, $new); + } else { + die "neither $pkey, $ckey, nor $ikey are defined in $state\n"; + } + + # update the last-imported var + { + local $ENV{GIT_CONFIG} = $state; + my $rv = system(qw/git config/, $lkey, $tip); + $rv == 0 or die "git config $lkey $tip failed: $? ($rv)\n"; + } +} + +# deliver to mbox or maildir, Email::LocalDelivery determines the type of +# folder (via Email::FolderType) via trailing trailing slash for maildir +# (and lack of trailing slash for mbox). Ezmlm and MH formats are not +# currently supported by Email::LocalDelivery. +sub _deliver_each { + my ($self, $dest, $tip, $new) = @_; + my $git = $self->{git}; + foreach my $path (@$new) { + _deliver_die($git->cat_blob("$tip:$path"), $dest); + } +} + +# just pipe the blob message to $command, bypassing Perl, +# so there's no validation at all +sub _run_for_each { + my ($self, $command, $tip, $new) = @_; + my $git = $self->{git}; + foreach my $path (@$new) { + my $cmd = "git cat-file blob $tip:$path | $command"; + my $rv = system($cmd); + $rv == 0 or die "delivery command: $cmd failed: $? ($rv)\n"; + } +} + +sub _imap_deliver_each { + my ($self, $tip, $new) = @_; + my $git = $self->{git}; + require Ssoma::IMAP; + my $imap = Ssoma::IMAP->new($git); + foreach my $path (@$new) { + $imap->imap_deliver($git->cat_blob("$tip:$path")); + } + $imap->quit; +} + +sub extract { + my ($self, $target) = @_; + $self->{git}->tmp_git_do(sub { $self->_extract($target) }); +} + +sub _deliver_die { + my @rv = Email::LocalDelivery->deliver(@_); + (scalar @rv == 1 && -f $rv[0]) or + die "delivery to $_[1] failed: $!\n"; +} + +# implements "ssoma cat MESSAGE-ID" +sub midextract { + my ($self, $message_id, $mbox) = @_; + $self->{git}->tmp_git_do(sub { + # leaving <> out of Message-IDs on the command-line is + # common and practical since it frees the user from + # quoting/escaping in most cases, so do not require + # Message-Ids have <> around themh + if ($message_id =~ /\A<.+>\z/) { # rare + $self->_midextract($message_id, $mbox); + } else { # common + eval { # try with additional <> first + my $tmpid = "<$message_id>"; + $self->_midextract($tmpid, $mbox); + }; + $self->_midextract($message_id, $mbox) if $@; + } + }); +} + +sub _midextract { + my ($self, $message_id, $mbox) = @_; + my $git = $self->{git}; + my $path = $git->mid2path($message_id); + my $ref = $self->{ref}; + my $tip = $git->qx_sha1("git rev-parse $ref^0"); + my $obj = "$tip:$path"; + my $type = $git->type($obj); + if ($type eq "tree") { # unlikely + $git->each_in_tree($obj, sub { + my ($blob_id, $xpath) = ($1, $2); + _deliver_die($git->cat_blob($blob_id), $mbox); + }); + } elsif ($type eq "blob") { + _deliver_die($git->cat_blob($obj), $mbox); + } else { + die "unhandled type: $type (obj=$obj)\n"; + } +} + +1; diff --git a/lib/Ssoma/Git.pm b/lib/Ssoma/Git.pm new file mode 100644 index 0000000..196d89a --- /dev/null +++ b/lib/Ssoma/Git.pm @@ -0,0 +1,278 @@ +# Copyright (C) 2013, Eric Wong and all contributors +# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt) +# +# Note: some trivial code here stolen from git-svn + Perl modules distributed +# with git. I wrote these long ago and I retain my copyright to it, so I'm +# within my right to relicense as AGPLv3+ +# +# Not using Git.pm and friends directly because some git installations may use +# a different Perl than this (and I might end up rewriting this entirely +# in C at a later time...) +package Ssoma::Git; +use strict; +use warnings; +use File::Path qw/mkpath/; +use IO::Handle; +use Fcntl; +use File::FcntlLock; +use Email::Simple; +use Digest::SHA qw/sha1_hex/; + +# Future versions of Ssoma will always be able to handle this version, at least +our $REPO_VERSION = 1; + +sub new { + my ($class, $git_dir) = @_; + bless { + git_dir => $git_dir, + index => "$git_dir/ssoma.index", + }, $class; +} + +# initialize a git repository +sub init_db { + my ($self, @opts) = @_; + + my @cmd = (qw(git init --bare), @opts); + push @cmd, $self->{git_dir}; + + system(@cmd) == 0 or die join(' ', @cmd)." failed: $?\n"; + + $self->tmp_git_do(sub { + @cmd = (qw(git config ssoma.repoversion), $REPO_VERSION); + system(@cmd) == 0 or die "command: ". join(' ', @cmd) . ": $?\n"; + }); +} + +sub lockfile { $_[0]->{git_dir} . "/ssoma.lock" } + +sub sync_do { + my ($self, $sub) = @_; + + my $fs = File::FcntlLock->new; + $fs->l_type(F_WRLCK); + $fs->l_type(SEEK_CUR); + $fs->l_start(0); + $fs->l_len(0); + + my $path = $self->lockfile; + my $lock; + + # we must not race here because this is concurrent: + sysopen($lock, $path, O_WRONLY) or + sysopen($lock, $path, O_CREAT|O_EXCL|O_WRONLY) or + sysopen($lock, $path, O_WRONLY) or + die "failed to open lock $path: $!\n"; + + # wait for other processes to be done + $fs->lock($lock, F_SETLKW) or die "lock failed: " . $fs->error . "\n"; + + # run the sub! + my @ret = eval { &$sub }; + my $err = $@; + + # these would happen anyways, but be explicit so we can detect errors + $fs->lock($lock, F_UNLCK) or die "unlock failed: " . $fs->error . "\n"; + close $lock or die "close lockfile($path) failed: $!\n"; + + die $err if $err; + + wantarray ? @ret : $ret[0]; +} + +# perform sub with the given GIT_DIR +sub tmp_git_do { + my ($self, $sub) = @_; + local $ENV{GIT_DIR} = $self->{git_dir}; + &$sub; +} + +# perform sub with a temporary index +sub tmp_index_do { + my ($self, $sub) = @_; + local $ENV{GIT_INDEX_FILE} = $self->{index}; + + my ($dir, $base) = ($self->{index} =~ m#^(.*?)/?([^/]+)$#); + mkpath([$dir]) unless -d $dir; + -d $dir or die "$dir creation failed $!\n"; + &$sub; +} + +# bidirectional pipe, output would be SHA-1 hexdigest +sub bidi_sha1 { + my ($self, @cmd) = @_; + my $sub = pop @cmd; + my $cmd = join(' ', @cmd); + my ($in_0, $in_1, $out_0, $out_1); + + pipe($in_0, $in_1) or die "pipe failed: $!\n"; + pipe($out_0, $out_1) or die "pipe failed: $!\n"; + + my $pid = fork; + defined $pid or die "fork failed: $!\n"; + + if ($pid == 0) { + open STDIN, '<&', $in_0 or die "redirect stdin failed: $!\n"; + open STDOUT, '>&', $out_1 or die "redirect stdout failed: $!\n"; + exec @cmd; + die "exec($cmd) failed: $!\n"; + } + + close $in_0 or die "close in_0 failed: $!\n"; + close $out_1 or die "close out_1 failed: $!\n"; + $sub->($in_1); + close $in_1 or die "close in_1 failed: $!\n"; + my $sha1 = <$out_0>; + close $out_0 or die "close out_0 failed: $!\n"; + waitpid($pid, 0) or die "waitpid $pid failed: $!\n"; + $? == 0 or die "$cmd failed: $?\n"; + chomp $sha1; + $sha1 =~ /\A[a-f0-9]{40}\z/i or die "not a SHA-1: $sha1\n"; + $sha1; +} + +# run a command described by str and return the SHA-1 hexdigest output +sub qx_sha1 { + my ($self, $str) = @_; + my $sha1 = `$str`; + + die "$str failed: $?\n" if $?; + chomp $sha1; + $sha1 =~ /\A[a-f0-9]{40}\z/i or + die "not a SHA-1 hexdigest from: $str\n"; + $sha1; +} + +# returns a blob identifier the new message +sub simple_to_blob { + my ($self, $simple) = @_; + $self->bidi_sha1(qw/git hash-object -w --stdin/, sub { + my ($io) = @_; + print $io $simple->as_string or die "print failed: $!\n"; + }); +} + +# converts the given object name to an Email::Simple object +sub blob_to_simple { + my ($self, $obj) = @_; + Email::Simple->new($self->cat_blob($obj)); +} + +# returns key-value pairs of config directives in a hash +sub config_list { + my ($self, $file) = @_; + + local $ENV{GIT_CONFIG} = $file; + + my @cfg = `git config -l`; + $? == 0 or die "git config -l failed: $?\n"; + chomp @cfg; + my %rv = map { split(/=/, $_, 2) } @cfg; + \%rv; +} + +# used to hash the relevant portions of a message when there are conflicts +sub hash_simple2 { + my ($self, $simple) = @_; + my $dig = Digest::SHA->new("SHA-1"); + $dig->add($simple->header("Subject")); + $dig->add($simple->body); + $dig->hexdigest; +} + +# we currently only compare messages for equality based on +# Message-ID, Subject: header and body, nothing else. +# both args are Email::Simple objects +sub simple_eq { + my ($self, $cur, $new) = @_; + + (($cur->header("Subject") eq $new->header("Subject")) && + ($cur->body eq $new->body)); +} + +# kills leading/trailing space in-place +sub stripws { + $_[0] =~ s/\A\s*//; + $_[0] =~ s/\s*\z//; +} + +sub mid2path { + my ($self, $message_id) = @_; + stripws($message_id); + my $hex = sha1_hex($message_id); + $hex =~ /\A([a-f0-9]{2})([a-f0-9]{38})\z/i or + die "BUG: not a SHA-1 hex: $hex"; + "$1/$2"; +} + +sub cat_blob { + my ($self, $blob_id) = @_; + my $cmd = "git cat-file blob $blob_id"; + my $str = `$cmd`; + die "$cmd failed: $?\n" if $?; + $str; +} + +sub type { + my ($self, $obj) = @_; + my $cmd = "git cat-file -t $obj"; + my $str = `$cmd`; + die "$cmd failed: $?\n" if $?; + chomp $str; + $str; +} + +# only used for conflict resolution +sub each_in_tree { + my ($self, $obj, $sub) = @_; + my $cmd = "git ls-tree $obj"; + my @tree = `$cmd`; + $? == 0 or die "$cmd failed: $!\n"; + my $x40 = '[a-f0-9]{40}'; + foreach my $line (@tree) { + if ($line =~ m!\A100644 blob ($x40)\t($x40)$!o) { + my ($blob_id, $path) = ($1, $2); + $sub->($blob_id, $path); + } else { + warn "unexpected: bad line from $cmd:\n$line"; + } + } +} + +sub commit_index { + my ($self, $gii, $need_parent, $ref, $message) = @_; + + # this is basically what git commit(1) does, + # but we use git plumbing, not porcelain + $gii->done; + my $tree = $self->qx_sha1("git write-tree"); + + # can't rely on qx_sha1 since we initial commit may not have a parent + my $cmd = "git rev-parse $ref^0"; + my $parent; + if ($need_parent) { + $parent = $self->qx_sha1($cmd); + } else { + $parent = eval { $self->qx_sha1("$cmd 2>/dev/null") }; + if (defined $parent && $parent !~ /\A[a-f0-9]{40}\z/) { + die "$cmd returned bad SHA-1: $parent\n"; + } + } + + # make the commit + my @cmd = (qw/git commit-tree -m/, $message); + push @cmd, '-p', $parent if $parent; + push @cmd, $tree; + my $commit = $self->qx_sha1(join(' ', @cmd)); + + # update the ref + @cmd = (qw/git update-ref/, $ref, $commit); + push @cmd, $parent if $parent; # verification + system(@cmd) == 0 or die "command: ". join(' ', @cmd) . ": $?\n"; + + # gc if needed + @cmd = qw/git gc --auto/; + system(@cmd) == 0 or die "command: ". join(' ', @cmd) . ": $?\n"; +} + +1; diff --git a/lib/Ssoma/GitIndexInfo.pm b/lib/Ssoma/GitIndexInfo.pm new file mode 100644 index 0000000..c9a3930 --- /dev/null +++ b/lib/Ssoma/GitIndexInfo.pm @@ -0,0 +1,47 @@ +# Copyright (C) 2013, Eric Wong and all contributors +# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt) +# +# Note: some trivial code here stolen from git-svn + Perl modules distributed +# with git. I wrote these long ago I retain my copyright to it, so I'm within +# my right to relicense as AGPLv3+ +# +# Not using Git.pm and friends directly because some git installations may use +# a different Perl than this (and I might end up rewriting this entirely +# in another language). + +package Ssoma::GitIndexInfo; +use strict; +use warnings; + +sub new { + my ($class) = @_; + my $pid = open my $gui, '|-'; + defined $pid or die "failed to pipe + fork: $!\n"; + if ($pid == 0) { + exec(qw/git update-index -z --index-info/); + die "exec failed: $!\n"; + } + bless { gui => $gui, pid => $pid, nr => 0}, $class; +} + +sub remove { + my ($self, $path) = @_; + print { $self->{gui} } '0 ', 0 x 40, "\t", $path, "\0" or + die "failed to print to git update-index pipe: $!\n"; + ++$self->{nr}; +} + +sub update { + my ($self, $mode, $hash, $path) = @_; + print { $self->{gui} } $mode, ' ', $hash, "\t", $path, "\0" or + die "failed to print to git update-index pipe: $!\n"; + ++$self->{nr}; +} + +sub done { + my ($self) = @_; + close $self->{gui} or die "close pipe: $!\n"; + $? == 0 or die "git update-index failed: $?\n"; +} + +1; diff --git a/lib/Ssoma/IMAP.pm b/lib/Ssoma/IMAP.pm new file mode 100644 index 0000000..a32a288 --- /dev/null +++ b/lib/Ssoma/IMAP.pm @@ -0,0 +1,112 @@ +# Copyright (C) 2013, Eric Wong and all contributors +# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt) +# +# IMAP delivery module, used by Ssoma::Extractor if Email::LocalDelivery +# is not available. Since we are dependent on git, we use the same config +# settings as those used by git-imap-send(1) +package Ssoma::IMAP; +use strict; +use warnings; +use Ssoma::Git; +use Net::IMAP::Simple; + +sub new { + my ($class, $git) = @_; + my $file = "$git->{git_dir}/config"; + my $cfg = $git->config_list($file); + my %opts = (); + my $self = bless { opts => \%opts }, $class; + foreach my $k (qw/folder host user pass port tunnel/) { + $self->{$k} = $cfg->{"imap.$k"}; + } + + check_unsupported($git, $cfg); + + my $imap; + if ((my $host = $self->{host})) { + $host =~ s!imap://!!; + $host =~ s!imaps://!! and $opts{use_ssl} = 1; + my $port = $self->{port}; + $host .= ":$port" if defined $port; + $self->get_pass($host); + $imap = Net::IMAP::Simple->new($host, %opts) or conn_fail(); + $imap->login($self->{user}, $self->{pass}) or + die "Login failed: " . $imap->errstr . "\n"; + } elsif ((my $tunnel = $self->{tunnel})) { + # XXX not tested + $host = "cmd:$tunnel"; + $imap = Net::IMAP::Simple->new($host, %opts) or conn_fail(); + } else { + die "neither imap.host nor imap.tunnel set in $file\n"; + } + $self->{imap} = $imap; + $self; +} + +sub imap_deliver { + my ($self, $msg) = @_; + $self->{imap}->put($self->{folder}, $msg); +} + +sub check_unsupported { + my ($git, $cfg) = @_; + + if ((my $sslverify = $cfg->{"imap.sslverify"})) { + local $ENV{GIT_CONFIG} = "$git->{git_dir}/config"; + $sslverify = `git config --bool imap.sslverify`; + chomp $sslverify; + if ($sslverify eq "false") { + die "imap.sslverify=false not supported\n"; + } + } + + if (defined $cfg->{"imap.authmethod"}) { + die "imap.authMethod not supported by Net::IMAP::Simple\n"; + } +} + +sub get_pass { + my ($self, $host) = @_; + + return if defined $self->{pass}; + my $pass = ""; + + print STDERR "$self->{user}\@$host password:"; + STDERR->flush; + my $readkey; + eval { + require Term::ReadKey; + Term::ReadKey::ReadMode('noecho'); + }; + if ($@) { + my $cmd = 'stty -echo'; + print STDERR "Term::ReadKey not available, using `$cmd'\n"; + system($cmd) and die "$cmd failed: $?\n"; + $pass = ; + $cmd = 'stty echo'; + system($cmd) and die "$cmd failed: $?\n"; + chomp $pass; + } else { + # read the password + while (defined(my $key = Term::ReadKey::ReadKey(0))) { + last if $key =~ /[\012\015]/; # [\r\n] + $pass .= $key; + } + Term::ReadKey::ReadMode('restore'); + } + print STDERR "\n"; + STDERR->flush; + + $self->{pass} = $pass; +} + +sub conn_fail { + die "Unable to connect to IMAP: $Net::IMAP::Simple::errstr\n"; +} + +sub quit { + my ($self) = @_; + $self->{imap}->quit; +} + +1; diff --git a/lib/Ssoma/MDA.pm b/lib/Ssoma/MDA.pm new file mode 100644 index 0000000..25d0fd6 --- /dev/null +++ b/lib/Ssoma/MDA.pm @@ -0,0 +1,133 @@ +# Copyright (C) 2013, Eric Wong and all contributors +# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt) +# +# Mail Delivery Agent module, delivers mail into a ssoma git repo +package Ssoma::MDA; +use strict; +use warnings; +use Ssoma::GitIndexInfo; + +sub new { + my ($class, $git) = @_; + bless { git => $git, ref => "refs/heads/master" }, $class; +} + +# may convert existing blob to a tree +# returns false if message already exists +# returns true on successful delivery +sub blob_upgrade { + my ($self, $gii, $new, $path) = @_; + + my $git = $self->{git}; + my $obj = "$self->{ref}^0:$path"; + my $cur = $git->blob_to_simple($obj); + + # do nothing if the messages match: + return 0 if $git->simple_eq($cur, $new); + + # kill the old blob + $gii->remove($path); + + # implicitly create a new tree via index with two messages + foreach my $simple ($cur, $new) { + my $id = $git->simple_to_blob($simple); + my $path2 = $git->hash_simple2($simple); + $gii->update("100644", $id, "$path/$path2"); + } + 1; +} + +# used to update existing trees, which only happen when we have Message-ID +# conflicts +sub tree_update { + my ($self, $gii, $new, $path) = @_; + my $git = $self->{git}; + my $obj = "$self->{ref}^0:$path"; + my $cmd = "git ls-tree $obj"; + my @tree = `$cmd`; + $? == 0 or die "$cmd failed: $!\n"; + chomp @tree; + + my $id = $git->simple_to_blob($new); + my $path2 = $git->hash_simple2($new); + + # go through the existing tree and look for duplicates + foreach my $line (@tree) { + $line =~ m!\A100644 blob ([a-f0-9]{40})\t(([a-f0-9]{40}))\z! or + die "corrupt repo: bad line from $cmd: $line\n"; + my ($xid, $xpath2) = ($1, $2); + + # do nothing if most of the message matches + return 0 if $path2 eq $xpath2 || $id eq $xid; + } + + # no duplicates found, add to the index + $gii->update("100644", $id, "$path/$path2"); +} + +# this appends the given message-id to the git repo, requires locking +# (Ssoma::Git::sync_do) +sub append { + my ($self, $path, $simple) = @_; + + my $git = $self->{git}; + my $ref = $self->{ref}; + + # $path is a path name we generated, so it's sanitized + my $gii = Ssoma::GitIndexInfo->new; + + my $obj = "$ref^0:$path"; + my $cmd = "git cat-file -t $obj"; + my $type = `$cmd 2>/dev/null`; + + if ($? == 0) { # rare, object already exists + chomp $type; + + # we return undef here if the message already exists + if ($type eq "blob") { + # this may upgrade the existing blob to a tree + $self->blob_upgrade($gii, $simple, $path) or return; + } elsif ($type eq "tree") { + # possibly add object to an existing tree + $self->tree_update($gii, $simple, $path) or return; + } else { + # we're screwed if a commit/tag has the same SHA-1 + die "CONFLICT: `$cmd' returned: $type\n"; + } + } else { # new message, just create a blob, common + my $id = $git->simple_to_blob($simple); + $gii->update('100644', $id, $path); + } + $git->commit_index($gii, 0, $ref, "mda"); +} + +# the main entry point takes an Email::Simple object +sub deliver { + my ($self, $simple) = @_; + my $git = $self->{git}; + + # convert the Message-ID into a path + my $mid = $simple->header("Message-ID"); + + # if there's no Message-ID, generate one to avoid too many conflicts + # leading to trees + if (!defined $mid || $mid =~ /\A\s*\z/) { + $mid = '<' . $git->hash_simple2($simple) . '@localhost>'; + $simple->header_set("Message-ID", $mid); + } + my $path = $git->mid2path($mid); + + # kill potentially confusing/misleading headers + foreach my $d (qw(status lines content-length)) { + $simple->header_set($d); + } + + my $sub = sub { + $git->tmp_index_do(sub { + $self->append($path, $simple); + }); + }; + $git->sync_do(sub { $git->tmp_git_do($sub) }); +} + +1; diff --git a/lib/Ssoma/Remover.pm b/lib/Ssoma/Remover.pm new file mode 100644 index 0000000..5e5872c --- /dev/null +++ b/lib/Ssoma/Remover.pm @@ -0,0 +1,70 @@ +# Copyright (C) 2013, Eric Wong and all contributors +# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt) +package Ssoma::Remover; +use strict; +use warnings; +use Ssoma::Git; +use Ssoma::GitIndexInfo; + +sub new { + my ($class, $git) = @_; + bless { git => $git, ref => "refs/heads/master" }, $class; +} + +sub remove_simple { + my ($self, $simple) = @_; + my $git = $self->{git}; + my $sub = sub { + $git->tmp_index_do(sub { + $self->_remove($simple); + }); + }; + $git->sync_do(sub { $git->tmp_git_do($sub) }); +} + +# remove an Email::Simple object from the current index +sub _remove { + my ($self, $simple) = @_; + my $git = $self->{git}; + my $path = $git->mid2path($simple->header("Message-ID")); + my $ref = $self->{ref}; + my $tip = $git->qx_sha1("git rev-parse $ref^0"); + my $obj = "$tip:$path"; + my $type = $git->type($obj); + my (@keep, @remove); + if ($type eq "tree") { # unlikely + $git->each_in_tree($obj, sub { + my ($blob_id, $xpath) = ($1, $2); + my $tmp = $git->blob_to_simple($blob_id); + if ($git->simple_eq($simple, $tmp)) { + push @remove, "$path/$xpath"; + } else { + push @keep, $blob_id; + } + }); + } elsif ($type eq "blob") { # likely + my $tmp = $git->blob_to_simple($obj); + if ($git->simple_eq($simple, $tmp)) { + push @remove, $path; + } + } else { + die "unhandled type=$type for obj=$obj\n"; + } + + my $gii = Ssoma::GitIndexInfo->new; + foreach my $rm (@remove) { $gii->remove($rm) } + + if (scalar(@keep) == 1) { # convert tree back to blob + my $blob_id = $keep[0]; + $gii->remove($path); + $gii->update('100644', $blob_id, $path); + } elsif ((scalar(@keep) == 0) && ($type eq "tree")) { + # this is not possible unless simple_eq changes over time + $gii->remove($path); + } # else: do nothing if (@keep > 1) + + # commit changes + $git->commit_index($gii, 1, $ref, 'rm'); +} + +1; diff --git a/ssoma b/ssoma new file mode 100755 index 0000000..dfc7332 --- /dev/null +++ b/ssoma @@ -0,0 +1,264 @@ +#!/usr/bin/perl -w +# Copyright (C) 2013, Eric Wong and all contributors +# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt) +# This is the normal command-line client for users +use strict; +use warnings; +use Getopt::Long; +use Ssoma::Git; +use Ssoma::Extractor; +use File::Path::Expand qw/expand_filename/; +use File::Path qw/make_path/; +use File::Temp qw/tempfile/; +use File::Spec qw//; +use Email::LocalDelivery; +Getopt::Long::Configure("require_order", "pass_through"); +our %opts; +GetOptions( + "help|h" => \$opts{help}, + "quiet|q" => \$opts{quiet}, + "force|f" => \$opts{force}, +) or usage(1); + +$ENV{SSOMA_HOME} ||= expand_filename("~/.ssoma/"); + +# these expand automatically to the associated cmd_$name, so "add" +# calls cmd_add, "sync" calls cmd_sync, and so forth +our %cmd = ( + "add" => { + doc => "start watching a new list", + arg => "LISTNAME URL TYPE:/path/to/destination [TARGET]", + long => "TYPE must be one of 'maildir', 'mbox', 'imap' ". + "or 'command'", + }, + "sync" => { + doc => "sync target(s) for existing LISTNAME", + arg => "[LISTNAME] [TARGET]", + }, + "cat" => { + doc => "show a message by Message-ID", + arg => "MESSAGE-ID [LISTNAME|GIT_DIR]", + }, +); + +my $cmd = shift @ARGV; +usage("", 1) unless defined $cmd; +$cmd eq "help" and usage("", 0); +$cmd{$cmd} or usage("", 1); + +my $cmd_sub = eval { + no strict 'refs'; + *{"cmd_$cmd"}; +} or die "BUG: $cmd not implemented\n"; + +$cmd_sub->(@ARGV); +exit 0; + +sub usage { + my ($cmd, $exit) = @_; + my $fd = $exit ? \*STDERR : \*STDOUT; + print $fd "Usage: ssoma [options] [arguments]\n"; + + print $fd "Available commands:\n" unless $cmd; + + foreach my $c (sort keys %cmd) { + next if $cmd && $cmd ne $c; + my $pad = 'A10'; + print $fd ' ', pack($pad, $c), $cmd{$c}->{doc}, "\n"; + print $fd ' ', pack($pad, ''), $cmd{$c}->{arg}, "\n"; + + my $long = $cmd{$c}->{long}; + if ($long) { + print $fd ' ', pack($pad, ''), $long, "\n"; + } + + my $opt = $cmd{$c}->{opt} or next; + foreach my $s (sort keys %$opt) { + # prints out arguments as they should be passed: + my $x = s#[:=]s$## ? '' : + (s#[:=]i$## ? '' : ''); + print $fd ' ' x 21, join(', ', map { length $s > 1 ? + "--$s" : "-$s" } + split /\|/, $s)," $x\n"; + } + } + exit $exit; +} + +sub check_listname { + my ($name) = @_; + + $name =~ /\A[a-zA-Z0-9]/ or die + "LISTNAME must start with an alphanumeric char\n"; + $name =~ /[a-zA-Z0-9]\z/ or die + "LISTNAME must end with an alphanumeric char\n"; + $name =~ /\A[\w\.\-]+\z/ or die + "LISTNAME must only contain alphanumerics, dashes, periods and underscores\n"; +} + +sub cmd_add { + my ($listname, $url, $dest, $target) = @_; + (defined($url) && defined($listname) && defined($dest)) or + usage("add", 1); + + check_listname($listname); + + $dest =~ /\A(mbox|maildir|command|imaps?):(.+)\z/ or + die usage("add", 1); + + my ($type, $path) = ($1, $2); + my $imap; + + if ($type =~ /\Aimaps?\z/) { + $imap = 1; + } else { + $path = File::Spec->rel2abs($path); + } + + # Email::LocalDelivery relies on this trailing slash for + # maildir distinction + if (($type eq "maildir") && ($path !~ m!/\z!)) { + $path .= "/"; + } elsif (($type eq "mbox") && ($path =~ m!/\z!)) { + die "mbox `$path' must not end with a trailing slash\n"; + } + + $target = "local" unless defined $target; + + my $dir = "$ENV{SSOMA_HOME}/$listname.git"; + make_path($ENV{SSOMA_HOME}); + my $git = Ssoma::Git->new($dir); + my @init_args; + push @init_args, '-q' if $opts{quiet}; + $git->init_db(@init_args); + my $state = "$git->{git_dir}/ssoma.state"; + + if ($imap) { + local $ENV{GIT_CONFIG} = "$git->{git_dir}/config"; + require URI; + + # no imap:// support in URI, yet, but URI has ftp:// + # for passwords + my $uri = $dest; + $uri =~ s{\A(imaps?):}{ftp:}; + my $scheme = $1; + my $u = URI->new($uri); + + $u->scheme or die "no scheme from $dest\n"; + defined(my $host = $u->host) or die "no host from $dest\n"; + my $port = $u->_port; + x(qw/git config imap.port/, $port) if (defined $port); + x(qw/git config imap.host/, "$scheme://$host"); + + defined(my $user = $u->user) or die "no user in $dest\n";; + x(qw/git config imap.user/, $user); + my $p = $u->password; + warn_imap_pass($ENV{GIT_CONFIG}) if (defined $p); + + my $path = $u->path; + defined $path or $path = "INBOX"; + $path =~ s!\A/!!; # no leading slash + x(qw/git config imap.folder/, $path); + + # this only needs to be set for Extractor to follow + local $ENV{GIT_CONFIG} = $state; + x(qw/git config/, "target.$target.imap", "true"); + } else { + local $ENV{GIT_CONFIG} = $state; + my $cfg = $type eq "command" ? "command" : "path"; + x(qw/git config/, "target.$target.$cfg", $path); + } + + $git->tmp_git_do(sub { + x(qw/git remote add --mirror=fetch origin/, $url); + }); +} + +sub foreach_list { + my ($sub) = @_; + foreach my $dir (<$ENV{SSOMA_HOME}/*.git>) { + -d $dir or next; + $sub->($dir); + } +} + +sub cmd_sync { + my ($listname, @targets) = @_; + if (defined $listname) { + check_listname($listname); + do_sync("$ENV{SSOMA_HOME}/$listname.git", \@targets); + } else { + foreach_list(sub { do_sync($_[0], []) }); + } +} + +sub cmd_cat { + my ($message_id, $listname) = @_; + + # write to a temporary mbox because Email::LocalDelivery works + # that way. + my ($fh, $mbox) = tempfile(TMPDIR => 1, SUFFIX => '.mbox'); + + if (defined $listname) { + my $path = -d $listname ? $listname + : "$ENV{SSOMA_HOME}/$listname.git"; + do_cat($path, $message_id, $mbox); + } else { + foreach_list(sub { do_cat($_[0], $message_id, $mbox, 1) }); + } + unlink $mbox or warn "error unlinking $mbox: $!\n"; + + foreach (<$fh>) { + print $_ or warn "failed printing to stdout: $!\n"; + } + close $fh or die "error closing $mbox: $!\n"; +} + +sub do_sync { + my ($dir, $targets) = @_; + my $git = Ssoma::Git->new($dir); + my $ex = Ssoma::Extractor->new($git); + + # no targets? sync all of them + if (scalar(@$targets) == 0) { + my $cfg = $git->config_list("$git->{git_dir}/ssoma.state"); + my %t; + foreach my $k (keys %$cfg) { + $k =~ /\Atarget\.(\w+)\.(?:path|imap|command)\z/ + or next; + $t{$1} = 1; + } + @$targets = keys %t; + } + + $git->tmp_git_do(sub { + my @cmd = qw/git fetch/; + push @cmd, '-q' if $opts{quiet}; + push @cmd, '-f' if $opts{force}; + x(@cmd); + }); + + foreach my $target (@$targets) { + $ex->extract($target); + } +} + +sub x { + system(@_) and die join(' ', @_). " failed: $?\n"; +} + +sub warn_imap_pass { + my ($file) = @_; + print STDERR <new($dir); + my $ex = Ssoma::Extractor->new($git); + $ex->midextract($message_id, $mbox, $missing_ok); +} diff --git a/ssoma-mda b/ssoma-mda new file mode 100755 index 0000000..af5f63f --- /dev/null +++ b/ssoma-mda @@ -0,0 +1,21 @@ +#!/usr/bin/perl -w +# Copyright (C) 2013, Eric Wong and all contributors +# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt) +# This is the command-line mail delivery agent for servers. +# Try to keep this small as it may be invoked frequently for each message +# delivered. +my $usage = "ssoma-mda /path/to/git/repo < /path/to/rfc2822_message"; +use strict; +use warnings; +use Ssoma::MDA; +use Ssoma::Git; +use Email::Simple; +my $repo = shift @ARGV or die "Usage: $usage\n"; +my $git = Ssoma::Git->new($repo); +my $mda = Ssoma::MDA->new($git); +my $simple; +{ + local $/; + $simple = Email::Simple->new(<>); +} +$mda->deliver($simple); diff --git a/ssoma-rm b/ssoma-rm new file mode 100755 index 0000000..05f2d66 --- /dev/null +++ b/ssoma-rm @@ -0,0 +1,19 @@ +#!/usr/bin/perl -w +# Copyright (C) 2013, Eric Wong and all contributors +# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt) +# this is intended for server administrators, so it takes an absolute +# path (however this may be run by clients, too). +my $usage = "ssoma-rm /path/to/git/repo < /path/to/rfc2822_message"; +use strict; +use warnings; +use Ssoma::Git; +use Ssoma::Remover; +my $dir = shift or die "usage: $usage\n"; +my $git = Ssoma::Git->new($dir); +my $rm = Ssoma::Remover->new($git); +my $simple; +{ + local $/; # slurp message from stdin + $simple = Email::Simple->new(<>); +}; +$rm->remove_simple($simple); diff --git a/t/all.t b/t/all.t new file mode 100644 index 0000000..9c14d59 --- /dev/null +++ b/t/all.t @@ -0,0 +1,198 @@ +#!/usr/bin/perl -w +# Copyright (C) 2013, Eric Wong and all contributors +# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt) +use strict; +use warnings; +use Test::More; +# test all command-line interfaces at once +my $mda = "blib/script/ssoma-mda"; +my $cli = "blib/script/ssoma"; +my $rm = "blib/script/ssoma-rm"; +my $tmp = tempdir(CLEANUP => 1); +use File::Temp qw/tempdir/; +use Email::Simple; + +ok(-x $mda, "$mda is executable"); +ok(-x $cli, "$cli is executable"); + +{ + # instantiate new git repo + my $git_dir = "$tmp/input.git"; + system(qw/git init -q --bare/, $git_dir) == 0 or + die "git init -q --bare $git_dir failed: $?\n"; + ok(-d $git_dir && -f "$git_dir/config", "$git_dir exists and is bare"); + + # deliver the message + my $simple = Email::Simple->new(<<'EOF'); +From: me@example.com +To: u@example.com +Message-Id: <666@example.com> +Subject: zzz + +OMFG +EOF + my $pid = open my $pipe, '|-'; + defined $pid or die "failed to pipe + fork: $!\n"; + if ($pid == 0) { + exec($mda, $git_dir); + die "exec failed: $!\n"; + } + print $pipe $simple->as_string or die "print failed: $!\n"; + close $pipe or die "close pipe failed: $!\n"; + is($?, 0, "$mda exited successfully"); +} + +{ + my $mbox = "$tmp/mbox"; + local $ENV{SSOMA_HOME} = "$tmp/ssoma-home"; + my $name = "test"; + my @cmd = ($cli, '-q', "add", $name, "$tmp/input.git", "mbox:$mbox"); + is(system(@cmd), 0, "add list with ssoma(1)"); + + { + use Ssoma::Git; + my $git_dir = "$ENV{SSOMA_HOME}/$name.git"; + my $git = Ssoma::Git->new($git_dir); + my $cfg = $git->config_list("$git_dir/ssoma.state"); + is(scalar keys %$cfg, 1, "only one key"); + like($cfg->{"target.local.path"}, qr{\A/}, + "target.local.path is absolute"); + like($cfg->{"target.local.path"}, qr{\Q$mbox\E\z}, + "target.local.path points to mbox"); + + $cfg = $git->config_list("$git_dir/config"); + is($cfg->{"core.bare"}, "true", "repo is bare"); + } + + @cmd = ($cli, '-q', "sync"); + is(system(@cmd), 0, "sync list with ssoma(1)"); + + open(my $fh, '<', $mbox) or die "open $mbox: $!\n"; + my @lines = <$fh>; + is(scalar grep(/^Subject: zzz/, @lines), 1, "email delivered"); + close $fh or die "close $mbox: $!\n"; +} + +{ + # deliver an additional message + my $simple = Email::Simple->new(<<'EOF'); +From: moi@example.com +To: you@example.com +Message-Id: <666666@example.com> +Subject: xxx + +OMFG +EOF + my $pid = open my $pipe, '|-'; + defined $pid or die "failed to pipe + fork: $!\n"; + if ($pid == 0) { + exec($mda, "$tmp/input.git"); + die "exec failed: $!\n"; + } + print $pipe $simple->as_string or die "print failed: $!\n"; + close $pipe or die "close pipe failed: $!\n"; + is($?, 0, "$mda exited successfully"); +} + +# ensure new message is delivered +{ + my $mbox = "$tmp/mbox"; + local $ENV{SSOMA_HOME} = "$tmp/ssoma-home"; + my $name = "test"; + + my @cmd = ($cli, '-q', "sync", $name); + is(system(@cmd), 0, "sync $name list with ssoma(1)"); + + open(my $fh, '<', $mbox) or die "open $mbox: $!\n"; + my @lines = <$fh>; + is(scalar grep(/^Subject: xxx/, @lines), 1, "email delivered"); + is(scalar grep(/^Subject: zzz/, @lines), 1, "email delivered"); + close $fh or die "close $mbox: $!\n"; +} + +# ssoma cat functionality +{ + local $ENV{SSOMA_HOME} = "$tmp/ssoma-home"; + my @full = `$cli cat \\<666\@example.com\\>`; + my $from = shift @full; + like($from, qr/^From /, "ssoma cat mbox has From_ line"); + is(scalar grep(/^Message-Id: <666\@example\.com>/, @full), 1, + "correct message returned from ssoma cat"); + my @lazy = `$cli cat 666\@example.com`; + $from = shift @lazy; + like($from, qr/^From /, "ssoma cat (lazy) mbox has From_ line"); + is(join('', @lazy), join('', @full), + "lazy ssoma cat invocation w/o <> works"); +} + +# ssoma cat with a repo path +{ + my @full = `$cli cat \\<666\@example.com\\> $tmp/input.git`; + my $from = shift @full; + like($from, qr/^From /, "ssoma cat mbox has From_ line"); + is(scalar grep(/^Message-Id: <666\@example\.com>/, @full), 1, + "correct message returned from ssoma cat"); +} + +# duplicate message delivered to MDA (for "ssoma cat" dup handling) +{ + # deliver the message + my $dup = Email::Simple->new(<<'EOF'); +From: me@example.com +To: u@example.com +Message-Id: <666@example.com> +Subject: duplicate + +EOF + use Ssoma::MDA; + use Ssoma::Git; + Ssoma::MDA->new(Ssoma::Git->new("$tmp/input.git"))->deliver($dup); +} + +# test ssoma cat on a duplicate +{ + my $mbox = "$tmp/mbox"; + local $ENV{SSOMA_HOME} = "$tmp/ssoma-home"; + my $name = "test"; + my @cmd = ($cli, "-q", "sync", $name); + is(system(@cmd), 0, "sync $name with ssoma(1)"); + + my @both = `$cli cat \\<666\@example.com\\>`; + is(scalar grep(/^Message-Id: <666\@example\.com>/, @both), 2, + "correct messages returned from ssoma cat"); + is(scalar grep(/^From /, @both), 2, + "From_ line from both messages returned from ssoma cat"); + my @s = sort grep(/^Subject: /, @both); + my @x = ("Subject: duplicate\n", "Subject: zzz\n"); + is_deeply(\@s, \@x, "subjects are correct in mbox"); +} + +# test ssoma-rm functionality +{ + my $git_dir = "$tmp/input.git"; + my @tree = `GIT_DIR=$git_dir git ls-tree -r HEAD`; + is(scalar @tree, 3, "three messages sitting in a tree"); + + # deliver the message to ssoma-rm + my $simple = Email::Simple->new(<<'EOF'); +From: me@example.com +To: u@example.com +Message-Id: <666@example.com> +Subject: zzz + +OMFG +EOF + my $pid = open my $pipe, '|-'; + defined $pid or die "failed to pipe + fork: $!\n"; + if ($pid == 0) { + exec($rm, $git_dir); + die "exec failed: $!\n"; + } + print $pipe $simple->as_string or die "print failed: $!\n"; + close $pipe or die "close pipe failed: $!\n"; + is($?, 0, "$rm exited successfully"); + @tree = `GIT_DIR=$git_dir git ls-tree -r HEAD`; + is(scalar @tree, 2, "two messages sitting in a tree"); +} + +done_testing(); diff --git a/t/extractor.t b/t/extractor.t new file mode 100644 index 0000000..62a5571 --- /dev/null +++ b/t/extractor.t @@ -0,0 +1,192 @@ +#!/usr/bin/perl -w +# Copyright (C) 2013, Eric Wong and all contributors +# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt) +use strict; +use warnings; +use Test::More; +use Ssoma::Extractor; +use Ssoma::Git; +use Ssoma::MDA; +use File::Temp qw/tempdir/; + +my $mdadir = tempdir(CLEANUP => 1); +my $outdir = tempdir(CLEANUP => 1); + +my $outgit = Ssoma::Git->new("$outdir/git"); +my $ex = Ssoma::Extractor->new($outgit); +my $maildir = "$outdir/maildir/"; +my $mailbox = "$outdir/mbox"; + +my $mdagit = Ssoma::Git->new("$mdadir/gittest"); +$mdagit->init_db; +my $mda = Ssoma::MDA->new($mdagit); +my $email = Email::Simple->new(<<'EOF'); +From: U +To: Me +Message-Id: <666@example.com> +Subject: :o + +HIHI +EOF + +$mda->deliver($email); + +{ + my @cmd = (qw/git clone -q --mirror/, + $mdagit->{git_dir}, $outgit->{git_dir}); + is(system(@cmd), 0, "extractor repository cloned"); +} + +{ + local $ENV{GIT_CONFIG} = "$outgit->{git_dir}/ssoma.state"; + is(system(qw/git config target.mydir.path/, $maildir), 0, + "setup maildir"); +} + + +my $check_last = sub { + my ($key) = @_; + local $ENV{GIT_CONFIG} = "$outgit->{git_dir}/ssoma.state"; + my $last = `git config $key`; + is($?, 0, "git config succeeds"); + like($last, qr/^[a-f0-9]{40}$/, "last-imported is a SHA1"); +}; + +{ + $ex->extract("mydir"); + my @new = <$outdir/maildir/new/*>; + is(scalar @new, 1, "one file now exists in maildir"); + my $f = $new[0]; + open my $fh, '<', $f or die "opening $f failed: $!\n"; + local $/; + my $s = <$fh>; + my $simple = Email::Simple->new($s); + is($simple->header('message-id'), '<666@example.com>', + "delivered message-id matches"); + $check_last->("target.mydir.last-imported"); + unlink $f or die "failed to unlink $f: $!\n"; +} + +{ + local $ENV{GIT_CONFIG} = "$outgit->{git_dir}/ssoma.state"; + is(system(qw/git config target.mybox.path/, $mailbox), 0, + "setup mailbox"); +} + +{ + $ex->extract("mybox"); + open my $fh, '<', $mailbox or die "opening $mailbox failed: $!\n"; + local $/; + my $s = <$fh>; + my $simple = Email::Simple->new($s); + is($simple->header('message-id'), '<666@example.com>', + "delivered message-id matches"); + $check_last->("target.mybox.last-imported"); +} + +my $another = Email::Simple->new(<<'EOF'); +From: U +To: Me +Message-Id: <666666@example.com> +Subject: byebye + +*yawn* +EOF +$mda->deliver($another); + +{ + local $ENV{GIT_DIR} = $outgit->{git_dir}; + is(system("git fetch -q"), 0, "fetching updates succeeds"); +} + +# ensure we can update maildir without adding old messages +{ + + $ex->extract("mydir"); + my @new = <$outdir/maildir/new/*>; + is(scalar @new, 1, "one new file now exists in maildir"); + my $f = $new[0]; + open my $fh, '<', $f or die "opening $f failed: $!\n"; + local $/; + my $s = <$fh>; + my $simple = Email::Simple->new($s); + is($simple->header('message-id'), '<666666@example.com>', + "delivered message-id matches"); + is($simple->body, "*yawn*\n", "body matches"); + $check_last->("target.mydir.last-imported"); + unlink $f or die "failed to unlink $f: $!\n"; # for next test +} + +# ensure we can update mmbox without adding old messages +{ + + $ex->extract("mybox"); + open my $fh, '<', $mailbox or die "opening $mailbox failed: $!\n"; + my @lines = <$fh>; + my @subjects = grep /^Subject:/, @lines; + my @from_ = grep /^From /, @lines; + is(scalar @subjects, 2, "2 subjects in mbox"); + is(scalar @from_, 2, "2 From_ lines in mbox"); + + $check_last->("target.mydir.last-imported"); +} + +# ensure we can handle conflicts w/o reimporting when the MDA +# upgrades a blob to a tree. +my $conflict = Email::Simple->new(<<'EOF'); +From: U +To: Me +Message-Id: <666666@example.com> +Subject: BYE + +*YAWN* +EOF +$mda->deliver($conflict); + +{ + local $ENV{GIT_DIR} = $outgit->{git_dir}; + is(system("git fetch -q"), 0, "fetching updates succeeds"); +} + +# ensure we can update maildir without adding old messages even on a +# message-id conflict +{ + + $ex->extract("mydir"); + my @new = <$outdir/maildir/new/*>; + is(scalar @new, 1, "one new file now exists in maildir"); + my $f = $new[0]; + open my $fh, '<', $f or die "opening $f failed: $!\n"; + local $/; + my $s = <$fh>; + my $simple = Email::Simple->new($s); + is($simple->header('message-id'), '<666666@example.com>', + "delivered conflicting message-id matches"); + is($simple->body, "*YAWN*\n", "body matches on conflict"); + $check_last->("target.mydir.last-imported"); +} + +# ensure we can pipe to commands +{ + { + my $cat = "cat >> $outdir/cat.out"; + local $ENV{GIT_CONFIG} = "$outgit->{git_dir}/ssoma.state"; + is(system(qw/git config target.cat.command/, $cat), 0, + "setup delivery command"); + } + + $ex->extract("cat"); + my $f = "$outdir/cat.out"; + open my $fh, '<', $f or die "open $f failed: $!\n"; + my @lines = <$fh>; + my @subjects = grep /^Subject:/, @lines; + my @from = grep /^From:/, @lines; + my @mid = grep /^Message-Id:/i, @lines; + is(scalar @subjects, 3, "3 subjects in dump"); + is(scalar @mid, 3, "3 message-ids in dump"); + is(scalar @from, 3, "3 From: lines in dump"); + + $check_last->("target.cat.last-imported"); +} + +done_testing(); diff --git a/t/git.t b/t/git.t new file mode 100644 index 0000000..c19093d --- /dev/null +++ b/t/git.t @@ -0,0 +1,61 @@ +#!/usr/bin/perl -w +# Copyright (C) 2013, Eric Wong and all contributors +# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt) +use strict; +use warnings; +use Test::More; +use Ssoma::Git; +use Ssoma::GitIndexInfo; +use File::Temp qw/tempdir/; +my $tmpdir = tempdir(CLEANUP => 1); +my $git = Ssoma::Git->new("$tmpdir/gittest"); + +$git->init_db; +ok(-d "$tmpdir/gittest", "git repo created"); + +{ + my $v = `GIT_DIR=$tmpdir/gittest git config ssoma.repoversion`; + is(0, $?, "git config succeeded"); + chomp($v); + is(1, $v, "ssoma.repoversion is set to 1"); +} + +is(0, $git->tmp_git_do(sub { system(qw(git config ssoma.test foo)) }), + "setting config works"); + +is("foo\n", $git->tmp_git_do(sub { `git config ssoma.test` }), + "reading config works"); + +$git->tmp_git_do(sub { + my $commit; + $git->tmp_index_do(sub { + my $gii = Ssoma::GitIndexInfo->new; + + my $sha1 = `echo hello world | git hash-object -w --stdin`; + is(0, $?, "hashed one object"); + chomp $sha1; + + is(1, $gii->update(100644, $sha1, 'hello/world'), + "add hashed object to index"); + $gii = undef; + + my $tree = `git write-tree`; + is(0, $?, "wrote tree out"); + chomp $tree; + + $commit = `git commit-tree -m 'hi' $tree`; + is(0, $?, "committed tree"); + chomp $commit; + + is(0, system(qw(git update-ref refs/heads/master), $commit), + "updated ref"); + }); +}); + +{ + is($git->mid2path(""), + $git->mid2path("\t\t"), + "mid2path ignores leading/trailing whitespace"); +} + +done_testing(); diff --git a/t/imap.t b/t/imap.t new file mode 100644 index 0000000..14fc0b3 --- /dev/null +++ b/t/imap.t @@ -0,0 +1,8 @@ +#!/usr/bin/perl -w +# Copyright (C) 2013, Eric Wong and all contributors +# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt) +use strict; +use warnings; +use Test::More; +require_ok("Ssoma::IMAP"); +done_testing(); diff --git a/t/mda-badheaders.t b/t/mda-badheaders.t new file mode 100644 index 0000000..22571e2 --- /dev/null +++ b/t/mda-badheaders.t @@ -0,0 +1,58 @@ +#!/usr/bin/perl -w +# Copyright (C) 2013, Eric Wong and all contributors +# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt) +use strict; +use warnings; +use Test::More; +use Ssoma::MDA; +use Ssoma::Git; +use Email::Simple; +use Digest::SHA qw/sha1_hex/; +use File::Temp qw/tempdir/; + +my $tmpdir = tempdir(CLEANUP => 1); +my $git = Ssoma::Git->new("$tmpdir/gittest"); +$git->init_db; +my $mda = Ssoma::MDA->new($git); + +my $email = Email::Simple->new("From: U \n\nHIHI\n"); +my %headers = ( + "To" => "Me ", + "From" => "You ", + "Message-ID" => "<666\@example.com>", + "Subject" => ":o", + "Status" => "RO", + "Lines" => "666", + "Content-Length" => "666", +); + +my %discard = map { $_ => 1 } qw(Status Lines Content-Length); + +while (my ($key, $val) = each %headers) { + $email->header_set($key, $val); +} + +$mda->deliver($email); + +local $ENV{GIT_DIR} = "$tmpdir/gittest"; + +my $blob_id = sha1_hex("<666\@example.com>"); +my ($dir, $base) = ($blob_id =~ m!\A([a-f0-9]{2})([a-f0-9]{38})\z!); +ok(defined $dir && defined $base, "bad sha1: $blob_id"); + +my $raw = `git cat-file blob HEAD:$dir/$base`; +is(0, $?, "git cat-file returned: $?"); + +my $delivered = Email::Simple->new($raw); +is("HIHI\n", $delivered->body, "body matches"); + +while (my ($key, $val) = each %headers) { + if ($discard{$key}) { + is($delivered->header($key), undef, "header $key discarded"); + } else { + is($delivered->header($key), $val, "header $key not discarded"); + } +} + +done_testing(); + diff --git a/t/mda-conflict.t b/t/mda-conflict.t new file mode 100644 index 0000000..09bd5c1 --- /dev/null +++ b/t/mda-conflict.t @@ -0,0 +1,106 @@ +#!/usr/bin/perl -w +# Copyright (C) 2013, Eric Wong and all contributors +# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt) +use strict; +use warnings; +use Test::More; +use Ssoma::MDA; +use Ssoma::Git; +use Email::Simple; +use Digest::SHA qw/sha1_hex/; +use File::Temp qw/tempdir/; + +my $tmpdir = tempdir(CLEANUP => 1); +my $git = Ssoma::Git->new("$tmpdir/gittest"); +$git->init_db; +my $mda = Ssoma::MDA->new($git); + +my $email = Email::Simple->new("From: U \n\nHIHI\n"); +$email->header_set("To", "Me "); +$email->header_set("Subject", ":o"); +$email->header_set("Message-ID", "<12345\@example.com>"); + +$mda->deliver($email); + +local $ENV{GIT_DIR} = "$tmpdir/gittest"; +my @orig = `git rev-list HEAD`; +is(1, scalar @orig, "one revision exists"); + +# deliver a second message +$email->header_set("message-ID", "<666\@example.com>"); +$email->body_set("BYEBYE\nBYEYBE\n"); + +$mda->deliver($email); + +# validate delivery results and history +my @two = ` git rev-list HEAD`; +is(2, scalar @two, "two revisions exist"); +is($orig[0], $two[1], "history is correct"); + +my @tree = `git ls-tree -r HEAD`; +is(0, $?, "git ls-tree -r HEAD succeeded"); +chomp @tree; +is(2, scalar @tree, "two entries in tree"); + +# ensure path Message-ID -> path mapping works +foreach my $line (@tree) { + my ($mode, $type, $blob, $path) = split(/\s+/, $line);; + my $raw = `git cat-file blob $blob`; + my $simple = Email::Simple->new($raw); + my $mid = $simple->header("message-id"); + my $path_sha1 = $path; + $path_sha1 =~ tr!/!!d; + is($path_sha1, sha1_hex($mid), "path mapping works $mid"); +} + +# delivery again with identical Message-ID +$mda->deliver($email); + +# duplicate detected +chomp(my @curr = `git ls-tree -r HEAD`); +is_deeply(\@tree, \@curr, "duplicate not stored"); + +# repeat message-ID but different content +$email->body_set("different\n"); +$mda->deliver($email); + +my @prev = @curr; +my @prev_blobs = map { (split(/\s+/, $_))[2] } @prev; + +chomp(@curr = `git ls-tree -r HEAD`); +my %curr_blobs = map { (split(/\s+/, $_))[2] => 1 } @curr; +is(3, scalar @curr, "mismatch stored with identical Message-ID"); + +foreach my $prev (@prev_blobs) { + ok(delete $curr_blobs{$prev}, "prev=$prev blob exists"); +} + +my @only = keys %curr_blobs; +is(1, scalar @only, "one new blob stored"); + +my $body_3 = "3rd message with identical Message-ID, ridiculous\n"; +$email->body_set($body_3); +$mda->deliver($email); + +@prev = @curr; +@prev_blobs = map { (split(/\s+/, $_))[2] } @prev; +chomp(@curr = `git ls-tree -r HEAD`); +%curr_blobs = map { (split(/\s+/, $_))[2] => 1 } @curr; +is(4, scalar @curr, "another stored with identical Message-ID"); + +foreach my $prev (@prev_blobs) { + ok(delete $curr_blobs{$prev}, "prev=$prev blob exists"); +} +@only = keys %curr_blobs; +is(1, scalar @only, "one new blob stored"); + +my $want = sha1_hex($email->header("Subject") . $email->body); +my @want = grep(m!/\Q$want\E!, @curr); +is(1, scalar @want, "wanted message is unique"); +my $blob = (split(/\s+/, $want[0]))[2]; +my $s = `git cat-file blob $blob`; +$s = Email::Simple->new($s); +is("<666\@example.com>", $s->header("message-id"), "MID matches"); +is($body_3, $s->body, "body matches"); + +done_testing(); diff --git a/t/mda-missing-mid.t b/t/mda-missing-mid.t new file mode 100644 index 0000000..d375ae9 --- /dev/null +++ b/t/mda-missing-mid.t @@ -0,0 +1,26 @@ +#!/usr/bin/perl -w +# Copyright (C) 2013, Eric Wong and all contributors +# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt) +use strict; +use warnings; +use Test::More; +use Ssoma::MDA; +use Ssoma::Git; +use Email::Simple; +use File::Temp qw/tempdir/; +my $tmpdir = tempdir(CLEANUP => 1); +my $git = Ssoma::Git->new("$tmpdir/gittest"); +$git->init_db; +my $mda = Ssoma::MDA->new($git); +my $email = Email::Simple->new("From: U \n\nHIHI\n"); +$mda->deliver($email); + +local $ENV{GIT_DIR} = "$tmpdir/gittest"; +my @tree = `git ls-tree -r HEAD`; +is(scalar @tree, 1, "one item in tree"); +my @line = split(/\s+/, $tree[0]); +my $msg = Email::Simple->new($git->cat_blob($line[2])); +like($msg->header("message-id"), qr/\A<[a-f0-9]{40}\@localhost>\z/, + "message-id generated for message missing it"); + +done_testing(); diff --git a/t/remover.t b/t/remover.t new file mode 100644 index 0000000..6fa833b --- /dev/null +++ b/t/remover.t @@ -0,0 +1,87 @@ +#!/usr/bin/perl -w +# Copyright (C) 2013, Eric Wong and all contributors +# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt) +use strict; +use warnings; +use Test::More; +use Ssoma::MDA; +use Ssoma::Git; +use Ssoma::Remover; +use Email::Simple; +use Digest::SHA qw/sha1_hex/; +use File::Temp qw/tempdir/; + +my $tmpdir = tempdir(CLEANUP => 1); +my $git_dir = "$tmpdir/gittest"; +my $git = Ssoma::Git->new($git_dir); +$git->init_db; +my $mda = Ssoma::MDA->new($git); +my $rm = Ssoma::Remover->new($git); +my @tree; + +{ + my $email = Email::Simple->new(<<'EOF'); +From: me@example.com +To: u@example.com +Message-Id: <666@example.com> +Subject: zzz + +OMFG +EOF + + $mda->deliver($email); + @tree = `GIT_DIR=$git_dir git ls-tree -r HEAD`; + is($?, 0, "no error from git ls-tree"); + is(scalar @tree, 1, "message delivered"); + + # simple removal + $rm->remove_simple($email); + @tree = `GIT_DIR=$git_dir git ls-tree -r HEAD`; + is($?, 0, "no error from git ls-tree"); + is(scalar @tree, 0, "tree is now empty after removal"); + + $mda->deliver($email); + $email->body_set("conflict"); + $mda->deliver($email); + + @tree = `GIT_DIR=$git_dir git ls-tree -r HEAD`; + is($?, 0, "no error from git ls-tree"); + is(scalar @tree, 2, "both messages stored"); + + # remove only one (the concflicting one) + $rm->remove_simple($email); + @tree = `GIT_DIR=$git_dir git ls-tree -r HEAD`; + is($?, 0, "no error from git ls-tree"); + is(scalar @tree, 1, "one removed, one exists"); + + my @line = split(/\s+/, $tree[0]); + is($line[1], "blob", "back to one blob"); + my $cur = `GIT_DIR=$git_dir git cat-file blob $line[2]`; + like($cur, qr/OMFG/, "kept original"); + $email->body_set("OMFG\n"); + $rm->remove_simple($email); + @tree = `GIT_DIR=$git_dir git ls-tree -r HEAD`; + is($?, 0, "no error from git ls-tree"); + is(scalar @tree, 0, "last removed"); + + my @seq = qw(1 2 3); + foreach my $i (@seq) { + $email->body_set("$i\n"); + $mda->deliver($email); + } + @tree = `GIT_DIR=$git_dir git ls-tree -r HEAD`; + is($?, 0, "no error from git ls-tree"); + is(scalar @tree, scalar @seq, "several messages exist"); + + my $expect = 3; + foreach my $i (@seq) { + $email->body_set("$i\n"); + $rm->remove_simple($email); + @tree = `GIT_DIR=$git_dir git ls-tree -r HEAD`; + is($?, 0, "no error from git ls-tree"); + $expect--; + is(scalar @tree, $expect, "$expect messages left"); + } +} + +done_testing(); -- 2.26.2