ced20ad0d9
this generally went unnoticed, as the tunnel usually terminates right before we exit anyway. however, if multiple Channels are synced, it may become visible. this is a "shotgun" implementation, where the main loop just reaps all unclaimed children. arguably, it would be cleaner if each socket actually tracked its own process, but getting synchronous kills+waits right is tricky, so we continue to pretend that there is no process as far as the socket layer is concerned. poll()/select() are not restartable, so they need EINTR handling now that SIGCHLD is actually delivered.
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isync/mbsync - free (GPL) mailbox synchronization program
http://isync.sf.net/
See AUTHORS for contact information.
``mbsync'' is a command line application which synchronizes mailboxes;
currently Maildir and IMAP4 mailboxes are supported. New messages, message
deletions and flag changes can be propagated both ways.
``mbsync'' is suitable for use in IMAP-disconnected mode.
Synchronization is based on unique message identifiers (UIDs), so
no identification conflicts can occur (unlike with some other mail
synchronizers).
Synchronization state is kept in one local text file per mailbox pair;
these files are protected against concurrent ``mbsync'' processes.
Mailboxes can be safely modified while ``mbsync'' operates.
Multiple replicas of each mailbox can be maintained.
isync is the project name, while mbsync is the current executable name; this
change was necessary because of massive changes in the user interface.
* Features
* Fine-grained selection of synchronization operations to perform
* Synchronizes single mailboxes or entire mailbox collections
* Partial mirrors possible: keep only the latest messages locally
* Trash functionality: backup messages before removing them
* IMAP features:
* Supports TLS/SSL via imaps: (port 993) and STARTTLS
* Supports SASL for authentication
* Pipelining for maximum speed
* Compatibility
isync should work fairly well with any IMAP4 compliant server;
servers that support the UIDPLUS and LITERAL+ extensions are most
efficient.
Courier 1.4.3 is known to be buggy, version 1.7.3 works fine.
M$ Exchange (2013 at least) needs DisableExtension MOVE to be compatible
with the Trash functionality.
* Platforms
At some point, ``isync'' has successfully run on:
Linux, Solaris 2.7, OpenBSD 2.8, FreeBSD 4.3.
* Requirements
perl v5.14+
Berkeley DB 4.1+ (optional)
OpenSSL for TLS/SSL support (optional)
Cyrus SASL (optional)
zlib (optional)
The build from git also requires:
GNU autotools (autoconf & automake)
perl module Date::Parse (libtimedate-perl on Debian, perl-TimeDate on
Fedora and Suse)
* Installation
./autogen.sh (only when building from git)
./configure
make
sudo make install
* Help
Please see the man page for complete documentation.