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/* File: socketace_.h
* Author: Ed Griffiths (edgrif@sanger.ac.uk)
* Copyright (c) J Thierry-Mieg and R Durbin, 1999
*-------------------------------------------------------------------
* This file is part of the ACEDB genome database package, written by
* Richard Durbin (Sanger Centre, UK) rd@sanger.ac.uk, and
* Jean Thierry-Mieg (CRBM du CNRS, France) mieg@kaa.crbm.cnrs-mop.fr
*
* Description: Internal header for the ACEDB server code. This code
* has been written for the sockets based version of the
* client/server but in theory could be made to work with
* other communication protocols.
* HISTORY:
* Last edited: Mar 21 10:23 2003 (edgrif)
* Created: Fri Nov 12 10:53:40 1999 (edgrif)
* CVS info: $Id: serverace_.h,v 1.18 2003/03/21 15:53:16 edgrif Exp $
*-------------------------------------------------------------------
*/
#ifndef DEF_ACESERVER_PRIV_H
#define DEF_ACESERVER_PRIV_H
#include <wsocket/servertransport.h> /* Defines server <-> transport layer. */
/* wspec/serverconfig.wrm keywords, configure the server. */
/* ---------------------- */
/* */
#define ACESERV_CONFIG_NAME "serverconfig"
#define ACESERV_CONFIG_EXT "wrm"
/* switch on debugging output from server. */
#define ACESERV_DEBUG "DEBUG"
/* database is read only, so don't try to use log files etc. in database. */
#define ACESERV_READONLY_DATABASE "READONLY_DATABASE"
/* working directory of server, if not set then defaults to database dir. */
#define ACESERV_WORKING_DIRECTORY "WORKING_DIRECTORY"
/* frequency of timestamping log messages, needed because time stamps are expensive. */
#define ACESERV_LOG_TIMESTAMP_FREQUENCY "TIMESTAMP_FREQUENCY"
/* switch off host domain name resolution to allow any user from a domain */
/* specified in the passwd file to log in. This is switchable because */
/* it can take a long time to execute, it could well be a security hole and */
/* it often fails because the tables for IP address to domain resolution are */
/* not up to date. */
#define ACESERV_NODOMAINRESOLVE "NO_HOSTNAME_RESOLUTION"
/* server will record its pid in a file in the database subdirectory, this gets
* used by various utilities that control demons on linux etc. */
#define ACESERV_PIDFILE "PIDFILE"
#define ACESERV_PIDFILE_EXT "wrm"
#define ACESERV_PIDFILE_NAME "SERVER_PIDFILE"
/* The database can be locked so that the server cannot be started on it for */
/* a number of reasons, e.g. the administrator shutdown the database to */
/* prevent possible corruption. This locking is implemented via "lock" files */
/* which are written into the /database directory and if present prevent the */
/* acedb server from starting up. The name of the lock file shows the reason */
/* the database is locked. The database cannot be restarted until the */
/* lockfile is manually removed. */
/* N.B. these file names will have the usual ".wrm" extension added. */
#define ACESERV_NORESTART "NO_RESTART"
#define ACESERV_NORESTART_OPT "norestart"
#define ACESERV_LOCKFILE_DIR "database"
#define ACESERV_LOCKFILE_EXT "wrm"
#define ACESERV_SHUTDOWN_LOCKFILE "SERVER_SHUTDOWN_LOCKFILE"
#define ACESERV_CRASH_LOCKFILE "SERVER_CRASH_LOCKFILE"
#define ACESERV_UNDETECTABLECRASH_LOCKFILE "SERVER_UNDETECTABLECRASH_LOCKFILE"
#define ACESERV_SHUTDOWN_LOCKFILE_MSG "The database has previously been shutdown " \
"with the \""ACESERV_NORESTART"\" option, " \
"it cannot be restarted until you remove the lockfile: %s"
#define ACESERV_CRASH_LOCKFILE_MSG "The database crashed last time it was run, " \
"but the code detected the crash and will have tried " \
"to save the database. " \
"You should check the integrity of the database with " \
"a stand alone program such as tace before restarting " \
"the server. Make sure it is safe to restart " \
"and then remove the lockfile: %s"
#define ACESERV_UNDETECTABLECRASH_LOCKFILE_MSG "The \"Undetectable crash\" lockfile has been " \
"found in the database sub-directory which indicates " \
"that the server may have crashed uncontrollably. " \
"You should check the integrity of the database with " \
"a stand alone program such as tace before restarting " \
"the server. Make sure it is safe to restart " \
"and then remove the lockfile: %s"
#define ACESERV_CRASH_INETD_MSG "Note that the server was inetd started and may " \
"repeatedly restart and crash because inetd detects new clients " \
"trying to connect and automatically attempts to restart the server."
/* GLOBAL READ/WRITE database access permissions. */
/* */
/* WRITE and READ are keywords which may both have one of the NONE, PASSWD */
/* or WORLD options. */
#define ACESERV_WRITE "WRITE"
#define ACESERV_READ "READ"
#define ACESERV_NONE "NONE"
#define ACESERV_PASSWD "PASSWD"
#define ACESERV_WORLD "WORLD"
typedef enum _AceServPermOptions {PERM_NONE, PERM_PASSWD, PERM_WORLD} AceServPermOptions ;
/* wspec/serverpasswd.wrm keywords, user passwords/groups. */
/* ---------------------- */
/* */
#define ACESERV_PASSWD_NAME "serverpasswd"
#define ACESERV_PASSWD_EXT "wrm"
/* Group membership of users. */
/* The below nonsense with having to add the ":" separately is because DECs */
/* strncmp interface is rubbish, it returns zero (i.e. OK) if a comparison */
/* ends prematurely...sigh. So we have to use strcmp..see updateUser. */
#define ACEGROUP_ADMIN_TEXT "admin"
#define ACEGROUP_WRITE_TEXT "write"
#define ACEGROUP_READ_TEXT "read"
#define ACEGROUP_ADMIN ACEGROUP_ADMIN_TEXT":"
#define ACEGROUP_WRITE ACEGROUP_WRITE_TEXT":"
#define ACEGROUP_READ ACEGROUP_READ_TEXT":"
/* CLIENT data */
/* The client structure, describes access permissions etc. for a single */
/* client. */
/* */
/* Describes where client is in its life cycle, e.g. server is waiting for */
/* password from client (n.b. init and killed states are not needed because */
/* client is allocated/deallocated immediately). */
/* ACECLIENT_WAITPASSWD => Server waiting for client to send password. */
/* ACECLIENT_ACTIVE => Client has registered correctly. */
typedef enum _AceClientState {ACECLIENT_WAITPASSWD, ACECLIENT_ACTIVE} AceClientState ;
/* The level of the clients access to the database. */
typedef enum _AceUserGroup {ACEUSER_NONE, ACEUSER_READ, ACEUSER_WRITE, ACEUSER_ADMIN} AceUserGroup ;
/* Error message stuff... */
/* Reasons why a client can be refused access to the database. */
/* (keep enums and strings in step because enums index the message array. */
/* SEE the function getPasswdErrorMessage(), this is rubbish and will be */
/* improved. */
/* */
typedef enum _ClientAccessStatus {CLIENTACCESS_FIRST = 0,
CLIENTACCESS_UNKNOWN, CLIENTACCESS_BADHASH,
CLIENTACCESS_BLOCKED, CLIENTACCESS_ADMINHOSTNAME,
CLIENTACCESS_BADUSER_REQUEST, CLIENTACCESS_BADDOMAIN_REQUEST,
CLIENTACCESS_LAST} ClientAccessStatus ;
/* Definition of an ace client. */
typedef struct _AceClientStruct
{
int clientId ;
AceClientState state ;
mytime_t lastAccess;
AceCommand aceCommand ;
KEY lastCommand ;
AceServPermOptions globalReadAcc, globalWriteAcc ;
char *userid ;
char *nonce ;
AceUserGroup group ;
ClientConnect connection ;
ClientConnectionID connection_id ;
BOOL compress ;
} AceClientStruct, *AceClient ;
/* server log file stuff. */
/* */
#define SERVER_LOGNAME "serverlog"
/* */
/* Server state is kept in this control block which is passed around rather */
/* than keeping a load of statics. */
/* Also include here some defaults for various bits of state, if you alter */
/* any of these you should change the corresponding bit in the usage string */
/* defined below. */
/* */
/* Notes: */
/* */
/* We hold the name of the crash lock file statically because we want to */
/* construct it at database startup when memory should be plentiful, not */
/* when we are crashing and don't know what state we are in. */
/* */
/* OK to have port here, it is not specific to sockets, rpc, udp etc. also */
/* use port nos. */
enum {ACESERV_PORT = 23100, /* should be > 49151 */
ACESERV_CLIENTTIMEOUT = 600, /* secs, infinite if zero */
ACESERV_SERVERTIMEOUT = 600, /* secs, infinite if zero */
ACESERV_AUTOSAVEINTERVAL = 600, /* secs */
ACESERV_MAXBYTES = 1024 * 100 /* 100KB is "slice" size. */
} ;
typedef struct _AceServStruct
{
BOOL debug ;
ACEOUT server_log ;
char *dbpath ;
char *working_dir ;
BOOL inetd_started ;
BOOL silent ;
BOOL readonly_DB ;
int port ;
int clientTimeOut ;
int serverTimeOut ;
int max_bytes ;
int autoSaveInterval ;
int nActiveClients;
int logmsgs_per_timestamp ; /* number of log messages per timestamp. */
int logmsgs_total ;
BOOL shuttingDown ;
Associator clientAss ;
char *pidfile ;
char *crashLockFile ;
char *undetectable_lockfile ;
BOOL crashfile_found_at_startup ;
Array wspecTar ;
Array wspecTarEncoded ;
} AceServStruct, *AceServ ;
/* Usage string for help with wrong args to server prog., see defines above */
/* for defaults for port etc. */
/* */
/* reason for lack of -option notation is that inetd only allows 5 params in some
implementations
*/
#define USAGE_STR "Usage: saceserver database_dir [port_number [params]]\n" \
" params are clientTimeout:serverTimeout:maxKbytes:autoSaveInterval\n" \
" defaults are port = 23100 \n" \
" clientTimeout = 600 seconds\n" \
" serverTimeout = 600 seconds\n" \
" maxKbytes = 100\n" \
" autoSaveInterval = 600 seconds\n" \
" autoSave checks are only certain at serverTimeout intervals\n" \
" example: saceserver /local1/worm 23100 1200:1200:100\n"
/* Functions private to the acedb server layer but shared between server */
/* layer files. */
int parseWords(char *request, Array *word_array_out) ;
int stringInWords(Array words, char *string) ;
void freeWords(Array word_array) ;
ACEIN findAndOpenFile(AceServ server, char *filename, char **filepath_out) ;
ACEIN findAndOpenPasswdFile(AceServ server, char **path_out) ;
BOOL checkUserHash(AceServ server, char *userid, char *hash, char *nonce) ;
BOOL checkGlobalDBAccess(AceServPermOptions *read_acc, AceServPermOptions *write_acc) ;
char *makeNonce(void *client_addr) ;
BOOL parseUseridHash(char *request, char **userid_out, char **hash_out) ;
AceUserGroup getUserDBAccess(AceServ server,
char *userid, char *hash, char *nonce,
AceServPermOptions globalReadAcc,
AceServPermOptions globalWriteAcc,
ClientConnect connection,
ClientAccessStatus *status_out) ;
char *getPasswdErrorMessage(ClientAccessStatus msg_num) ;
BOOL changeUserPasswd(AceServ server, char *userid, char *nonce, char *old_hash, char *new_hash,
ClientAccessStatus *status_out) ;
BOOL updateUser(AceServ server, Array user_text, ClientAccessStatus *status_out) ;
BOOL updateDomain(AceServ server, Array words, ClientAccessStatus *status_out) ;
BOOL updateGlobalDBPerms(AceServ server, char *perm_type, char *perm_level) ;
BOOL checkForServerConfigValue(AceServ server, char *keyword, char **keyword_value) ;
BOOL getUserUpdate(char **cp_out) ;
#endif /* DEF_ACESERVER_PRIV_H */
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