zcore¶
Name¶
zcore — Bridge for PHP-MAPI requests
Synopsis¶
zcore [-c config]
Description¶
zcore is a bridge process (proxy) between mapi(4gx) and exmdb_provider(4gx). It listens on /run/gromox/zcore.sock (hardcoded) for zcore RPCs, a Gromox-specific protocol and issues exmdb RPCs to exmdb_provider(4gx). As exmdb_provider connections have no state to speak of, zcore is the process that defines the logins sessions. zcore needs to run on the same server as the program that uses the Z-MAPI PHP functions.
Options¶
- -c config
Read configuration directives from the given file. If this option is not specified, /etc/gromox/zcore.cfg will be read if it exists.
- --version
Output version information and exit.
- -?
Display option summary.
Configuration directives¶
The usual config file location is /etc/gromox/zcore.cfg.
- address_cache_interval
Default: 5 minutes
- address_table_size
Default: 3000
- config_file_path
- Colon-separated list of directories which will be scanned when locating further configuration files, especially those used by plugin instances.Default: /etc/gromox/zcore:/etc/gromox
- data_file_path
- Colon-separated list of directories which will be scanned when locating data files.Default: /usr/share/gromox/zcore
- default_charset
Default: utf-8
- host_id
- A unique identifier for this system. It is used for the HELO line of outgoing SMTP connections, and as an unused identifier within muidStoreWrap entryids. The identifier should only use characters allowed for hostnames.Default: (system hostname)
- mailbox_ping_interval
Default: 5 minutes
- mail_max_length
Default: 64M
- max_ext_rule_length
Default: 510K
- max_mail_num
Default: 1000000
- max_rcpt_num
- The maximum number of recipients that an e-mail is allowed to have.Default: 256
- notify_stub_threads_num
- For every exmdb server in exmdb_list.txt, establish and keep this many number of outbound connections for receiving notification RPCs.Default: 10
- rpc_proxy_connection_num
- For every exmdb server in exmdb_list.txt, establish and keep this many number of outbound connections for sending commands.Default: 10
- separator_for_bounce
Default: ;
- smtp_server_ip
- SMTP server hostname or address to contact for outgoing mail.Default: ::1
- smtp_server_port
- SMTP server TCP port number to contact for outgoing mail.Default: 25
- state_path
- Directory for runtime variadic data.Default: /var/lib/gromox
- submit_command
Default: /usr/bin/php /usr/share/gromox/sa/submit.php
- user_cache_interval
- Sets the time how long a zcore-specific "OBJECT_TREE" structure is cached. At the end of this interval, user settings like PR_EC_WEBACCESS_JSON (stored in a separate file, not in SQLite) are flushed to disk.Default: 1 hour
- user_table_size
Default: 5000
- x500_org_name
Default: (unspecified)
- zarafa_mime_number
Default: 4096
- zcore_listen
- The named path for the AF_LOCAL socket that zcore will listen on.Default: /run/gromox/zcore.sock
- zcore_log_file
- Target for log messages here. Special values: "-" (stderr/syslog depending on parent PID) or "syslog" are recognized.Default: - (auto)
- zcore_log_level
- Maximum verbosity of logging. 1=crit, 2=error, 3=warn, 4=notice, 5=info, 6=debug.Default: 4 (notice)
- zcore_max_obh_per_session
- The maximum number of object handles each session can have at any one time (e.g. folders/messages/etc. open simultaneously). There is one session for each mailbox opened.Default: 500
- zcore_threads_num
- The minimum number of client processing threads to keep around.Default: 10
- zrpc_debug
- Log every incoming zcore RPC and the return code of the operation in a minimal fashion to stdout. Level 1 emits RPCs with a failure return code, level 2 emits all RPCs. Note the daemon log level needs to be "debug" (6), too.Default: 0
Network protocol¶
The transmissions on the zcore socket are simple concatenations of protocol data units built using the NDR format. The PDU length is present within the PDU itself near the start.
{
leuint32_t length;
char pdu[];
}
pdu := {
uint8_t call_id;
string directory;
switch (call_id) {
...
}
}
Store lookup¶
zcore determines the store path for a user from the user database, which may be provided by a service plugin like mysql_adaptor(4gx).
The filemap that specifies how paths are handled is located at data_file_path/exmdb_list.txt, whereby data_file_path is the eponymous directive from the config file.
Each line in this file consists of 4 columns separated by whitespace:
A portion of the store path to match on
The type of store ("private" or "public")
An IPv6 address (or v4-mapped address) of the server running exmdb_provider(4gx)
The TCP port number of the server
Files¶
config_file_path/exmdb_list.txt: exmdb multiserver selection map, see exmdb_provider(4gx) for details.
data_file_path/folder_names.txt: Translations for essential folders in a message store.
data_file_path/msgchg_grouping/: Data files for exchange_emsmdb(4gx)
data_file_path/notify_bounce/: A directory with translation files for bounce notification templates for when mail cannot be delivered
/usr/lib/gromox/libgxs_*.so: service plugins
/var/lib/gromox/user/*/config/zarafa.dat: file for the* PR_EC_WEBACCESS_JSON property.
Notes¶
Behavior for the address book generally mirrors exchange_nsp(4gx), so see that manpage for additional notes.
See also¶
gromox(7)