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ngircd-tor/src/ngircd/conf.c

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/*
* ngIRCd -- The Next Generation IRC Daemon
* Copyright (c)2001-2010 Alexander Barton (alex@barton.de)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* Please read the file COPYING, README and AUTHORS for more information.
*
* Configuration management (reading, parsing & validation)
*/
#include "portab.h"
#include "imp.h"
#include <assert.h>
#include <errno.h>
#ifdef PROTOTYPES
# include <stdarg.h>
#else
# include <varargs.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <unistd.h>
#include <pwd.h>
#include <grp.h>
#include <sys/types.h>
#include <unistd.h>
#ifdef HAVE_CTYPE_H
# include <ctype.h>
#endif
#include "array.h"
#include "ngircd.h"
#include "conn.h"
#include "channel.h"
#include "defines.h"
#include "log.h"
#include "match.h"
#include "tool.h"
#include "exp.h"
#include "conf.h"
static bool Use_Log = true;
static CONF_SERVER New_Server;
static int New_Server_Idx;
static size_t Conf_Oper_Count;
static size_t Conf_Channel_Count;
static void Set_Defaults PARAMS(( bool InitServers ));
static bool Read_Config PARAMS(( bool ngircd_starting ));
static bool Validate_Config PARAMS(( bool TestOnly, bool Rehash ));
static void Handle_GLOBAL PARAMS(( int Line, char *Var, char *Arg ));
static void Handle_OPERATOR PARAMS(( int Line, char *Var, char *Arg ));
static void Handle_SERVER PARAMS(( int Line, char *Var, char *Arg ));
static void Handle_CHANNEL PARAMS(( int Line, char *Var, char *Arg ));
static void Config_Error PARAMS(( const int Level, const char *Format, ... ));
static void Config_Error_NaN PARAMS(( const int LINE, const char *Value ));
static void Config_Error_TooLong PARAMS(( const int LINE, const char *Value ));
static void Init_Server_Struct PARAMS(( CONF_SERVER *Server ));
#ifdef WANT_IPV6
#define DEFAULT_LISTEN_ADDRSTR "::,0.0.0.0"
#else
#define DEFAULT_LISTEN_ADDRSTR "0.0.0.0"
#endif
#ifdef SSL_SUPPORT
struct SSLOptions Conf_SSLOptions;
static void
ConfSSL_Init(void)
{
free(Conf_SSLOptions.KeyFile);
Conf_SSLOptions.KeyFile = NULL;
free(Conf_SSLOptions.CertFile);
Conf_SSLOptions.CertFile = NULL;
free(Conf_SSLOptions.DHFile);
Conf_SSLOptions.DHFile = NULL;
array_free_wipe(&Conf_SSLOptions.KeyFilePassword);
}
static bool
ssl_print_configvar(const char *name, const char *file)
{
FILE *fp;
if (!file) {
printf(" %s =\n", name);
return true;
}
fp = fopen(file, "r");
if (fp)
fclose(fp);
else
fprintf(stderr, "ERROR: %s \"%s\": %s\n",
name, file, strerror(errno));
printf(" %s = %s\n", name, file);
return fp != NULL;
}
static bool
ConfSSL_Puts(void)
{
bool ret;
ret = ssl_print_configvar("SSLKeyFile", Conf_SSLOptions.KeyFile);
if (!ssl_print_configvar("SSLCertFile", Conf_SSLOptions.CertFile))
ret = false;
if (!ssl_print_configvar("SSLDHFile", Conf_SSLOptions.DHFile))
ret = false;
if (array_bytes(&Conf_SSLOptions.KeyFilePassword))
puts(" SSLKeyFilePassword = <secret>");
array_free_wipe(&Conf_SSLOptions.KeyFilePassword);
return ret;
}
#endif
static char *
strdup_warn(const char *str)
{
char *ptr = strdup(str);
if (!ptr)
Config_Error(LOG_ERR, "Could not allocate mem for string: %s", str);
return ptr;
}
static void
ports_puts(array *a)
{
size_t len;
UINT16 *ports;
len = array_length(a, sizeof(UINT16));
if (len--) {
ports = (UINT16*) array_start(a);
printf("%u", (unsigned int) *ports);
while (len--) {
ports++;
printf(", %u", (unsigned int) *ports);
}
}
putc('\n', stdout);
}
static void
ports_parse(array *a, int Line, char *Arg)
{
char *ptr;
int port;
UINT16 port16;
array_trunc(a);
/* Ports on that the server should listen. More port numbers
* must be separated by "," */
ptr = strtok( Arg, "," );
while (ptr) {
ngt_TrimStr(ptr);
port = atoi(ptr);
if (port > 0 && port < 0xFFFF) {
port16 = (UINT16) port;
if (!array_catb(a, (char*)&port16, sizeof port16))
Config_Error(LOG_ERR, "%s, line %d Could not add port number %ld: %s",
NGIRCd_ConfFile, Line, port, strerror(errno));
} else {
Config_Error( LOG_ERR, "%s, line %d (section \"Global\"): Illegal port number %ld!",
NGIRCd_ConfFile, Line, port );
}
ptr = strtok( NULL, "," );
}
}
GLOBAL void
Conf_Init( void )
{
Read_Config( true );
Validate_Config(false, false);
} /* Config_Init */
GLOBAL bool
Conf_Rehash( void )
{
if (!Read_Config(false))
return false;
Validate_Config(false, true);
/* Update CLIENT structure of local server */
Client_SetInfo(Client_ThisServer(), Conf_ServerInfo);
return true;
} /* Config_Rehash */
static const char*
yesno_to_str(int boolean_value)
{
if (boolean_value)
return "yes";
return "no";
}
static void
opers_free(void)
{
struct Conf_Oper *op;
size_t len;
len = array_length(&Conf_Opers, sizeof(*op));
op = array_start(&Conf_Opers);
while (len--) {
free(op->mask);
op++;
}
array_free(&Conf_Opers);
}
static void
opers_puts(void)
{
struct Conf_Oper *op;
size_t len;
len = array_length(&Conf_Opers, sizeof(*op));
op = array_start(&Conf_Opers);
while (len--) {
assert(op->name[0]);
puts("[OPERATOR]");
printf(" Name = %s\n", op->name);
printf(" Password = %s\n", op->pwd);
printf(" Mask = %s\n\n", op->mask ? op->mask : "");
op++;
}
}
GLOBAL int
Conf_Test( void )
{
/* Read configuration, validate and output it. */
struct passwd *pwd;
struct group *grp;
unsigned int i;
bool config_valid;
size_t predef_channel_count;
struct Conf_Channel *predef_chan;
Use_Log = false;
if (! Read_Config(true))
return 1;
config_valid = Validate_Config(true, false);
/* If stdin and stdout ("you can read our nice message and we can
* read in your keypress") are valid tty's, wait for a key: */
if( isatty( fileno( stdin )) && isatty( fileno( stdout ))) {
puts( "OK, press enter to see a dump of your service configuration ..." );
getchar( );
} else {
puts( "Ok, dump of your server configuration follows:\n" );
}
puts( "[GLOBAL]" );
printf(" Name = %s\n", Conf_ServerName);
printf(" Info = %s\n", Conf_ServerInfo);
#ifndef PAM
printf(" Password = %s\n", Conf_ServerPwd);
#endif
printf(" WebircPassword = %s\n", Conf_WebircPwd);
printf(" AdminInfo1 = %s\n", Conf_ServerAdmin1);
printf(" AdminInfo2 = %s\n", Conf_ServerAdmin2);
printf(" AdminEMail = %s\n", Conf_ServerAdminMail);
printf(" MotdFile = %s\n", Conf_MotdFile);
printf(" MotdPhrase = %s\n", Conf_MotdPhrase);
printf(" ChrootDir = %s\n", Conf_Chroot);
printf(" PidFile = %s\n", Conf_PidFile);
printf(" Listen = %s\n", Conf_ListenAddress);
fputs(" Ports = ", stdout);
ports_puts(&Conf_ListenPorts);
#ifdef SSL_SUPPORT
fputs(" SSLPorts = ", stdout);
ports_puts(&Conf_SSLOptions.ListenPorts);
if (!ConfSSL_Puts())
config_valid = false;
#endif
pwd = getpwuid(Conf_UID);
if (pwd)
printf(" ServerUID = %s\n", pwd->pw_name);
else
printf(" ServerUID = %ld\n", (long)Conf_UID);
grp = getgrgid(Conf_GID);
if (grp)
printf(" ServerGID = %s\n", grp->gr_name);
else
printf(" ServerGID = %ld\n", (long)Conf_GID);
printf(" PingTimeout = %d\n", Conf_PingTimeout);
printf(" PongTimeout = %d\n", Conf_PongTimeout);
printf(" ConnectRetry = %d\n", Conf_ConnectRetry);
printf(" OperCanUseMode = %s\n", yesno_to_str(Conf_OperCanMode));
printf(" OperServerMode = %s\n", yesno_to_str(Conf_OperServerMode));
printf(" AllowRemoteOper = %s\n", yesno_to_str(Conf_AllowRemoteOper));
printf(" PredefChannelsOnly = %s\n", yesno_to_str(Conf_PredefChannelsOnly));
printf(" NoDNS = %s\n", yesno_to_str(Conf_NoDNS));
printf(" NoIdent = %s\n", yesno_to_str(Conf_NoIdent));
printf(" NoPAM = %s\n", yesno_to_str(Conf_NoPAM));
#ifdef WANT_IPV6
printf(" ConnectIPv4 = %s\n", yesno_to_str(Conf_ConnectIPv6));
printf(" ConnectIPv6 = %s\n", yesno_to_str(Conf_ConnectIPv4));
#endif
printf(" MaxConnections = %ld\n", Conf_MaxConnections);
printf(" MaxConnectionsIP = %d\n", Conf_MaxConnectionsIP);
printf(" MaxJoins = %d\n", Conf_MaxJoins > 0 ? Conf_MaxJoins : -1);
printf(" MaxNickLength = %u\n\n", Conf_MaxNickLength - 1);
opers_puts();
for( i = 0; i < MAX_SERVERS; i++ ) {
if( ! Conf_Server[i].name[0] ) continue;
/* Valid "Server" section */
puts( "[SERVER]" );
printf( " Name = %s\n", Conf_Server[i].name );
printf( " Host = %s\n", Conf_Server[i].host );
printf( " Port = %u\n", (unsigned int)Conf_Server[i].port );
#ifdef SSL_SUPPORT
printf( " SSLConnect = %s\n", Conf_Server[i].SSLConnect?"yes":"no");
#endif
printf( " MyPassword = %s\n", Conf_Server[i].pwd_in );
printf( " PeerPassword = %s\n", Conf_Server[i].pwd_out );
printf( " ServiceMask = %s\n", Conf_Server[i].svs_mask);
printf( " Group = %d\n", Conf_Server[i].group );
printf( " Passive = %s\n\n", Conf_Server[i].flags & CONF_SFLAG_DISABLED ? "yes" : "no");
}
predef_channel_count = array_length(&Conf_Channels, sizeof(*predef_chan));
predef_chan = array_start(&Conf_Channels);
for (i = 0; i < predef_channel_count; i++, predef_chan++) {
if (!predef_chan->name[0])
continue;
/* Valid "Channel" section */
puts( "[CHANNEL]" );
printf(" Name = %s\n", predef_chan->name);
printf(" Modes = %s\n", predef_chan->modes);
printf(" Key = %s\n", predef_chan->key);
printf(" MaxUsers = %lu\n", predef_chan->maxusers);
printf(" Topic = %s\n", predef_chan->topic);
printf(" KeyFile = %s\n\n", predef_chan->keyfile);
}
return (config_valid ? 0 : 1);
} /* Conf_Test */
GLOBAL void
Conf_UnsetServer( CONN_ID Idx )
{
/* Set next time for next connection attempt, if this is a server
* link that is (still) configured here. If the server is set as
* "once", delete it from our configuration.
* Non-Server-Connections will be silently ignored. */
int i;
time_t t;
/* Check all our configured servers */
for( i = 0; i < MAX_SERVERS; i++ ) {
if( Conf_Server[i].conn_id != Idx ) continue;
/* Gotcha! Mark server configuration as "unused": */
Conf_Server[i].conn_id = NONE;
if( Conf_Server[i].flags & CONF_SFLAG_ONCE ) {
/* Delete configuration here */
Init_Server_Struct( &Conf_Server[i] );
} else {
/* Set time for next connect attempt */
t = time(NULL);
if (Conf_Server[i].lasttry < t - Conf_ConnectRetry) {
/* The connection has been "long", so we don't
* require the next attempt to be delayed. */
Conf_Server[i].lasttry =
t - Conf_ConnectRetry + RECONNECT_DELAY;
} else
Conf_Server[i].lasttry = t;
}
}
} /* Conf_UnsetServer */
GLOBAL void
Conf_SetServer( int ConfServer, CONN_ID Idx )
{
/* Set connection for specified configured server */
assert( ConfServer > NONE );
assert( Idx > NONE );
Conf_Server[ConfServer].conn_id = Idx;
} /* Conf_SetServer */
GLOBAL int
Conf_GetServer( CONN_ID Idx )
{
/* Get index of server in configuration structure */
int i = 0;
assert( Idx > NONE );
for( i = 0; i < MAX_SERVERS; i++ ) {
if( Conf_Server[i].conn_id == Idx ) return i;
}
return NONE;
} /* Conf_GetServer */
GLOBAL bool
Conf_EnableServer( const char *Name, UINT16 Port )
{
/* Enable specified server and adjust port */
int i;
assert( Name != NULL );
for( i = 0; i < MAX_SERVERS; i++ ) {
if( strcasecmp( Conf_Server[i].name, Name ) == 0 ) {
/* Gotcha! Set port and enable server: */
Conf_Server[i].port = Port;
Conf_Server[i].flags &= ~CONF_SFLAG_DISABLED;
return (Conf_Server[i].port && Conf_Server[i].host[0]);
}
}
return false;
} /* Conf_EnableServer */
GLOBAL bool
Conf_EnablePassiveServer(const char *Name)
{
/* Enable specified server */
int i;
assert( Name != NULL );
for (i = 0; i < MAX_SERVERS; i++) {
if ((strcasecmp( Conf_Server[i].name, Name ) == 0) && (Conf_Server[i].port > 0)) {
/* BINGO! Enable server */
Conf_Server[i].flags &= ~CONF_SFLAG_DISABLED;
return true;
}
}
return false;
} /* Conf_EnablePassiveServer */
GLOBAL bool
Conf_DisableServer( const char *Name )
{
/* Enable specified server and adjust port */
int i;
assert( Name != NULL );
for( i = 0; i < MAX_SERVERS; i++ ) {
if( strcasecmp( Conf_Server[i].name, Name ) == 0 ) {
/* Gotcha! Disable and disconnect server: */
Conf_Server[i].flags |= CONF_SFLAG_DISABLED;
if( Conf_Server[i].conn_id > NONE ) Conn_Close( Conf_Server[i].conn_id, NULL, "Server link terminated on operator request", true);
return true;
}
}
return false;
} /* Conf_DisableServer */
GLOBAL bool
Conf_AddServer( const char *Name, UINT16 Port, const char *Host, const char *MyPwd, const char *PeerPwd )
{
/* Add new server to configuration */
int i;
assert( Name != NULL );
assert( Host != NULL );
assert( MyPwd != NULL );
assert( PeerPwd != NULL );
/* Search unused item in server configuration structure */
for( i = 0; i < MAX_SERVERS; i++ ) {
/* Is this item used? */
if( ! Conf_Server[i].name[0] ) break;
}
if( i >= MAX_SERVERS ) return false;
Init_Server_Struct( &Conf_Server[i] );
strlcpy( Conf_Server[i].name, Name, sizeof( Conf_Server[i].name ));
strlcpy( Conf_Server[i].host, Host, sizeof( Conf_Server[i].host ));
strlcpy( Conf_Server[i].pwd_out, MyPwd, sizeof( Conf_Server[i].pwd_out ));
strlcpy( Conf_Server[i].pwd_in, PeerPwd, sizeof( Conf_Server[i].pwd_in ));
Conf_Server[i].port = Port;
Conf_Server[i].flags = CONF_SFLAG_ONCE;
return true;
} /* Conf_AddServer */
/**
* Check if the given nick name is an service
*/
GLOBAL bool
Conf_IsService(int ConfServer, const char *Nick)
{
return MatchCaseInsensitive(Conf_Server[ConfServer].svs_mask, Nick);
} /* Conf_IsService */
/**
* Initialize configuration settings with their default values.
*/
static void
Set_Defaults(bool InitServers)
{
int i;
strcpy(Conf_ServerName, "");
snprintf(Conf_ServerInfo, sizeof Conf_ServerInfo, "%s %s",
PACKAGE_NAME, PACKAGE_VERSION);
strcpy(Conf_ServerPwd, "");
strcpy(Conf_ServerAdmin1, "");
strcpy(Conf_ServerAdmin2, "");
strcpy(Conf_ServerAdminMail, "");
strlcpy(Conf_MotdFile, SYSCONFDIR, sizeof(Conf_MotdFile));
strlcat(Conf_MotdFile, MOTD_FILE, sizeof(Conf_MotdFile));
strlcpy(Conf_MotdPhrase, MOTD_PHRASE, sizeof(Conf_MotdPhrase));
Conf_UID = Conf_GID = 0;
strlcpy(Conf_Chroot, CHROOT_DIR, sizeof(Conf_Chroot));
strlcpy(Conf_PidFile, PID_FILE, sizeof(Conf_PidFile));
free(Conf_ListenAddress);
Conf_ListenAddress = NULL;
Conf_PingTimeout = 120;
Conf_PongTimeout = 20;
Conf_ConnectRetry = 60;
Conf_NoDNS = false;
Conf_NoIdent = false;
Conf_NoPAM = false;
Conf_Oper_Count = 0;
Conf_Channel_Count = 0;
Conf_OperCanMode = false;
Conf_OperServerMode = false;
Conf_AllowRemoteOper = false;
Conf_PredefChannelsOnly = false;
Conf_ConnectIPv4 = true;
Conf_ConnectIPv6 = true;
Conf_MaxConnections = 0;
Conf_MaxConnectionsIP = 5;
Conf_MaxJoins = 10;
Conf_MaxNickLength = CLIENT_NICK_LEN_DEFAULT;
/* Initialize server configuration structures */
if (InitServers) {
for (i = 0; i < MAX_SERVERS;
Init_Server_Struct(&Conf_Server[i++]));
}
} /* Set_Defaults */
static bool
no_listenports(void)
{
size_t cnt = array_bytes(&Conf_ListenPorts);
#ifdef SSL_SUPPORT
cnt += array_bytes(&Conf_SSLOptions.ListenPorts);
#endif
return cnt == 0;
}
static bool
Read_Config( bool ngircd_starting )
{
/* Read configuration file. */
char section[LINE_LEN], str[LINE_LEN], *var, *arg, *ptr;
const UINT16 defaultport = 6667;
int line, i, n;
FILE *fd;
/* Open configuration file */
fd = fopen( NGIRCd_ConfFile, "r" );
if( ! fd ) {
/* No configuration file found! */
Config_Error( LOG_ALERT, "Can't read configuration \"%s\": %s",
NGIRCd_ConfFile, strerror( errno ));
if (!ngircd_starting)
return false;
Config_Error( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME );
exit( 1 );
}
opers_free();
Set_Defaults( ngircd_starting );
Config_Error( LOG_INFO, "Reading configuration from \"%s\" ...", NGIRCd_ConfFile );
/* Clean up server configuration structure: mark all already
* configured servers as "once" so that they are deleted
* after the next disconnect and delete all unused servers.
* And delete all servers which are "duplicates" of servers
* that are already marked as "once" (such servers have been
* created by the last rehash but are now useless). */
for( i = 0; i < MAX_SERVERS; i++ ) {
if( Conf_Server[i].conn_id == NONE ) Init_Server_Struct( &Conf_Server[i] );
else {
/* This structure is in use ... */
if( Conf_Server[i].flags & CONF_SFLAG_ONCE ) {
/* Check for duplicates */
for( n = 0; n < MAX_SERVERS; n++ ) {
if( n == i ) continue;
if( Conf_Server[i].conn_id == Conf_Server[n].conn_id ) {
Init_Server_Struct( &Conf_Server[n] );
#ifdef DEBUG
Log(LOG_DEBUG,"Deleted unused duplicate server %d (kept %d).",
n, i );
#endif
}
}
} else {
/* Mark server as "once" */
Conf_Server[i].flags |= CONF_SFLAG_ONCE;
Log( LOG_DEBUG, "Marked server %d as \"once\"", i );
}
}
}
/* Initialize variables */
line = 0;
strcpy( section, "" );
Init_Server_Struct( &New_Server );
New_Server_Idx = NONE;
#ifdef SSL_SUPPORT
ConfSSL_Init();
#endif
/* Read configuration file */
while( true ) {
if( ! fgets( str, LINE_LEN, fd )) break;
ngt_TrimStr( str );
line++;
/* Skip comments and empty lines */
if( str[0] == ';' || str[0] == '#' || str[0] == '\0' ) continue;
/* Is this the beginning of a new section? */
if(( str[0] == '[' ) && ( str[strlen( str ) - 1] == ']' )) {
strlcpy( section, str, sizeof( section ));
if( strcasecmp( section, "[GLOBAL]" ) == 0 )
continue;
if( strcasecmp( section, "[SERVER]" ) == 0 ) {
/* Check if there is already a server to add */
if( New_Server.name[0] ) {
/* Copy data to "real" server structure */
assert( New_Server_Idx > NONE );
Conf_Server[New_Server_Idx] = New_Server;
}
/* Re-init structure for new server */
Init_Server_Struct( &New_Server );
/* Search unused item in server configuration structure */
for( i = 0; i < MAX_SERVERS; i++ ) {
/* Is this item used? */
if( ! Conf_Server[i].name[0] ) break;
}
if( i >= MAX_SERVERS ) {
/* Oops, no free item found! */
Config_Error( LOG_ERR, "Too many servers configured." );
New_Server_Idx = NONE;
}
else New_Server_Idx = i;
continue;
}
if (strcasecmp(section, "[CHANNEL]") == 0) {
Conf_Channel_Count++;
continue;
}
if (strcasecmp(section, "[OPERATOR]") == 0) {
Conf_Oper_Count++;
continue;
}
Config_Error( LOG_ERR, "%s, line %d: Unknown section \"%s\"!", NGIRCd_ConfFile, line, section );
section[0] = 0x1;
}
if( section[0] == 0x1 ) continue;
/* Split line into variable name and parameters */
ptr = strchr( str, '=' );
if( ! ptr ) {
Config_Error( LOG_ERR, "%s, line %d: Syntax error!", NGIRCd_ConfFile, line );
continue;
}
*ptr = '\0';
var = str; ngt_TrimStr( var );
arg = ptr + 1; ngt_TrimStr( arg );
if( strcasecmp( section, "[GLOBAL]" ) == 0 ) Handle_GLOBAL( line, var, arg );
else if( strcasecmp( section, "[OPERATOR]" ) == 0 ) Handle_OPERATOR( line, var, arg );
else if( strcasecmp( section, "[SERVER]" ) == 0 ) Handle_SERVER( line, var, arg );
else if( strcasecmp( section, "[CHANNEL]" ) == 0 ) Handle_CHANNEL( line, var, arg );
else Config_Error( LOG_ERR, "%s, line %d: Variable \"%s\" outside section!", NGIRCd_ConfFile, line, var );
}
/* Close configuration file */
fclose( fd );
/* Check if there is still a server to add */
if( New_Server.name[0] ) {
/* Copy data to "real" server structure */
assert( New_Server_Idx > NONE );
Conf_Server[New_Server_Idx] = New_Server;
}
/* not a single listening port? Add default. */
if (no_listenports() &&
!array_copyb(&Conf_ListenPorts, (char*) &defaultport, sizeof defaultport))
{
Config_Error(LOG_ALERT, "Could not add default listening Port %u: %s",
(unsigned int) defaultport, strerror(errno));
exit(1);
}
if (!Conf_ListenAddress)
Conf_ListenAddress = strdup_warn(DEFAULT_LISTEN_ADDRSTR);
if (!Conf_ListenAddress) {
Config_Error(LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME);
exit(1);
}
return true;
} /* Read_Config */
static bool
Check_ArgIsTrue( const char *Arg )
{
if( strcasecmp( Arg, "yes" ) == 0 ) return true;
if( strcasecmp( Arg, "true" ) == 0 ) return true;
if( atoi( Arg ) != 0 ) return true;
return false;
} /* Check_ArgIsTrue */
static unsigned int Handle_MaxNickLength(int Line, const char *Arg)
{
unsigned new;
new = (unsigned) atoi(Arg) + 1;
if (new > CLIENT_NICK_LEN) {
Config_Error(LOG_WARNING,
"%s, line %d: Value of \"MaxNickLength\" exceeds %u!",
NGIRCd_ConfFile, Line, CLIENT_NICK_LEN - 1);
return CLIENT_NICK_LEN;
}
if (new < 2) {
Config_Error(LOG_WARNING,
"%s, line %d: Value of \"MaxNickLength\" must be at least 1!",
NGIRCd_ConfFile, Line);
return 2;
}
return new;
} /* Handle_MaxNickLength */
static void
Handle_GLOBAL( int Line, char *Var, char *Arg )
{
struct passwd *pwd;
struct group *grp;
size_t len;
assert( Line > 0 );
assert( Var != NULL );
assert( Arg != NULL );
if( strcasecmp( Var, "Name" ) == 0 ) {
/* Server name */
len = strlcpy( Conf_ServerName, Arg, sizeof( Conf_ServerName ));
if (len >= sizeof( Conf_ServerName ))
Config_Error_TooLong( Line, Var );
return;
}
if( strcasecmp( Var, "Info" ) == 0 ) {
/* Info text of server */
len = strlcpy( Conf_ServerInfo, Arg, sizeof( Conf_ServerInfo ));
if (len >= sizeof( Conf_ServerInfo ))
Config_Error_TooLong ( Line, Var );
return;
}
if( strcasecmp( Var, "Password" ) == 0 ) {
/* Global server password */
len = strlcpy( Conf_ServerPwd, Arg, sizeof( Conf_ServerPwd ));
if (len >= sizeof( Conf_ServerPwd ))
Config_Error_TooLong( Line, Var );
return;
}
if (strcasecmp(Var, "WebircPassword") == 0) {
/* Password required for WEBIRC command */
len = strlcpy(Conf_WebircPwd, Arg, sizeof(Conf_WebircPwd));
if (len >= sizeof(Conf_WebircPwd))
Config_Error_TooLong(Line, Var);
return;
}
if( strcasecmp( Var, "AdminInfo1" ) == 0 ) {
/* Administrative info #1 */
len = strlcpy( Conf_ServerAdmin1, Arg, sizeof( Conf_ServerAdmin1 ));
if (len >= sizeof( Conf_ServerAdmin1 ))
Config_Error_TooLong ( Line, Var );
return;
}
if( strcasecmp( Var, "AdminInfo2" ) == 0 ) {
/* Administrative info #2 */
len = strlcpy( Conf_ServerAdmin2, Arg, sizeof( Conf_ServerAdmin2 ));
if (len >= sizeof( Conf_ServerAdmin2 ))
Config_Error_TooLong ( Line, Var );
return;
}
if( strcasecmp( Var, "AdminEMail" ) == 0 ) {
/* Administrative email contact */
len = strlcpy( Conf_ServerAdminMail, Arg, sizeof( Conf_ServerAdminMail ));
if (len >= sizeof( Conf_ServerAdminMail ))
Config_Error_TooLong( Line, Var );
return;
}
if( strcasecmp( Var, "Ports" ) == 0 ) {
ports_parse(&Conf_ListenPorts, Line, Arg);
return;
}
if( strcasecmp( Var, "MotdFile" ) == 0 ) {
/* "Message of the day" (MOTD) file */
len = strlcpy( Conf_MotdFile, Arg, sizeof( Conf_MotdFile ));
if (len >= sizeof( Conf_MotdFile ))
Config_Error_TooLong( Line, Var );
return;
}
if( strcasecmp( Var, "MotdPhrase" ) == 0 ) {
/* "Message of the day" phrase (instead of file) */
len = strlcpy( Conf_MotdPhrase, Arg, sizeof( Conf_MotdPhrase ));
if (len >= sizeof( Conf_MotdPhrase ))
Config_Error_TooLong( Line, Var );
return;
}
if( strcasecmp( Var, "ChrootDir" ) == 0 ) {
/* directory for chroot() */
len = strlcpy( Conf_Chroot, Arg, sizeof( Conf_Chroot ));
if (len >= sizeof( Conf_Chroot ))
Config_Error_TooLong( Line, Var );
return;
}
if ( strcasecmp( Var, "PidFile" ) == 0 ) {
/* name of pidfile */
len = strlcpy( Conf_PidFile, Arg, sizeof( Conf_PidFile ));
if (len >= sizeof( Conf_PidFile ))
Config_Error_TooLong( Line, Var );
return;
}
if( strcasecmp( Var, "ServerUID" ) == 0 ) {
/* UID the daemon should switch to */
pwd = getpwnam( Arg );
if( pwd ) Conf_UID = pwd->pw_uid;
else {
#ifdef HAVE_ISDIGIT
if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
else
#endif
Conf_UID = (unsigned int)atoi( Arg );
}
return;
}
if( strcasecmp( Var, "ServerGID" ) == 0 ) {
/* GID the daemon should use */
grp = getgrnam( Arg );
if( grp ) Conf_GID = grp->gr_gid;
else {
#ifdef HAVE_ISDIGIT
if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
else
#endif
Conf_GID = (unsigned int)atoi( Arg );
}
return;
}
if( strcasecmp( Var, "PingTimeout" ) == 0 ) {
/* PING timeout */
Conf_PingTimeout = atoi( Arg );
if( Conf_PingTimeout < 5 ) {
Config_Error( LOG_WARNING, "%s, line %d: Value of \"PingTimeout\" too low!",
NGIRCd_ConfFile, Line );
Conf_PingTimeout = 5;
}
return;
}
if( strcasecmp( Var, "PongTimeout" ) == 0 ) {
/* PONG timeout */
Conf_PongTimeout = atoi( Arg );
if( Conf_PongTimeout < 5 ) {
Config_Error( LOG_WARNING, "%s, line %d: Value of \"PongTimeout\" too low!",
NGIRCd_ConfFile, Line );
Conf_PongTimeout = 5;
}
return;
}
if( strcasecmp( Var, "ConnectRetry" ) == 0 ) {
/* Seconds between connection attempts to other servers */
Conf_ConnectRetry = atoi( Arg );
if( Conf_ConnectRetry < 5 ) {
Config_Error( LOG_WARNING, "%s, line %d: Value of \"ConnectRetry\" too low!",
NGIRCd_ConfFile, Line );
Conf_ConnectRetry = 5;
}
return;
}
if( strcasecmp( Var, "PredefChannelsOnly" ) == 0 ) {
/* Should we only allow pre-defined-channels? (i.e. users cannot create their own channels) */
Conf_PredefChannelsOnly = Check_ArgIsTrue( Arg );
return;
}
if( strcasecmp( Var, "NoDNS" ) == 0 ) {
/* don't do reverse dns lookups when clients connect? */
Conf_NoDNS = Check_ArgIsTrue( Arg );
return;
}
if (strcasecmp(Var, "NoIdent") == 0) {
/* don't do IDENT lookups when clients connect? */
Conf_NoIdent = Check_ArgIsTrue(Arg);
#ifndef IDENTAUTH
if (!Conf_NoIdent) {
/* user has enabled ident lookups explicitly, but ... */
Config_Error(LOG_WARNING,
"%s: line %d: NoIdent=False, but ngircd was built without IDENT support",
NGIRCd_ConfFile, Line);
}
#endif
return;
}
if(strcasecmp(Var, "NoPAM") == 0) {
/* don't use PAM library to authenticate users */
Conf_NoPAM = Check_ArgIsTrue(Arg);
return;
}
#ifdef WANT_IPV6
/* the default setting for all the WANT_IPV6 special options is 'true' */
if( strcasecmp( Var, "ConnectIPv6" ) == 0 ) {
/* connect to other hosts using ipv6, if they have an AAAA record? */
Conf_ConnectIPv6 = Check_ArgIsTrue( Arg );
return;
}
if( strcasecmp( Var, "ConnectIPv4" ) == 0 ) {
/* connect to other hosts using ipv4.
* again, this can be used for ipv6-only setups */
Conf_ConnectIPv4 = Check_ArgIsTrue( Arg );
return;
}
#endif
if( strcasecmp( Var, "OperCanUseMode" ) == 0 ) {
/* Are IRC operators allowed to use MODE in channels they aren't Op in? */
Conf_OperCanMode = Check_ArgIsTrue( Arg );
return;
}
if( strcasecmp( Var, "OperServerMode" ) == 0 ) {
/* Mask IRC operator as if coming from the server? (ircd-irc2 compat hack) */
Conf_OperServerMode = Check_ArgIsTrue( Arg );
return;
}
if(strcasecmp(Var, "AllowRemoteOper") == 0) {
/* Are remote IRC operators allowed to control this server? */
Conf_AllowRemoteOper = Check_ArgIsTrue(Arg);
return;
}
if( strcasecmp( Var, "MaxConnections" ) == 0 ) {
/* Maximum number of connections. 0 -> "no limit". */
#ifdef HAVE_ISDIGIT
if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var);
else
#endif
Conf_MaxConnections = atol( Arg );
return;
}
if( strcasecmp( Var, "MaxConnectionsIP" ) == 0 ) {
/* Maximum number of simultaneous connections from one IP. 0 -> "no limit" */
#ifdef HAVE_ISDIGIT
if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
else
#endif
Conf_MaxConnectionsIP = atoi( Arg );
return;
}
if( strcasecmp( Var, "MaxJoins" ) == 0 ) {
/* Maximum number of channels a user can join. 0 -> "no limit". */
#ifdef HAVE_ISDIGIT
if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
else
#endif
Conf_MaxJoins = atoi( Arg );
return;
}
if( strcasecmp( Var, "MaxNickLength" ) == 0 ) {
/* Maximum length of a nick name; must be same on all servers
* within the IRC network! */
Conf_MaxNickLength = Handle_MaxNickLength(Line, Arg);
return;
}
if( strcasecmp( Var, "Listen" ) == 0 ) {
/* IP-Address to bind sockets */
if (Conf_ListenAddress) {
Config_Error(LOG_ERR, "Multiple Listen= options, ignoring: %s", Arg);
return;
}
Conf_ListenAddress = strdup_warn(Arg);
/*
* if allocation fails, we're in trouble:
* we cannot ignore the error -- otherwise ngircd
* would listen on all interfaces.
*/
if (!Conf_ListenAddress) {
Config_Error(LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME);
exit(1);
}
return;
}
#ifdef SSL_SUPPORT
if( strcasecmp( Var, "SSLPorts" ) == 0 ) {
ports_parse(&Conf_SSLOptions.ListenPorts, Line, Arg);
return;
}
if( strcasecmp( Var, "SSLKeyFile" ) == 0 ) {
assert(Conf_SSLOptions.KeyFile == NULL );
Conf_SSLOptions.KeyFile = strdup_warn(Arg);
return;
}
if( strcasecmp( Var, "SSLCertFile" ) == 0 ) {
assert(Conf_SSLOptions.CertFile == NULL );
Conf_SSLOptions.CertFile = strdup_warn(Arg);
return;
}
if( strcasecmp( Var, "SSLKeyFilePassword" ) == 0 ) {
assert(array_bytes(&Conf_SSLOptions.KeyFilePassword) == 0);
if (!array_copys(&Conf_SSLOptions.KeyFilePassword, Arg))
Config_Error( LOG_ERR, "%s, line %d (section \"Global\"): Could not copy %s: %s!",
NGIRCd_ConfFile, Line, Var, strerror(errno));
return;
}
if( strcasecmp( Var, "SSLDHFile" ) == 0 ) {
assert(Conf_SSLOptions.DHFile == NULL);
Conf_SSLOptions.DHFile = strdup_warn( Arg );
return;
}
#endif
Config_Error(LOG_ERR, "%s, line %d (section \"Global\"): Unknown variable \"%s\"!",
NGIRCd_ConfFile, Line, Var);
} /* Handle_GLOBAL */
static void
Handle_OPERATOR( int Line, char *Var, char *Arg )
{
size_t len;
struct Conf_Oper *op;
assert( Line > 0 );
assert( Var != NULL );
assert( Arg != NULL );
assert( Conf_Oper_Count > 0 );
op = array_alloc(&Conf_Opers, sizeof(*op), Conf_Oper_Count - 1);
if (!op) {
Config_Error(LOG_ERR, "Could not allocate memory for operator (%d:%s = %s)", Line, Var, Arg);
return;
}
if (strcasecmp(Var, "Name") == 0) {
/* Name of IRC operator */
len = strlcpy(op->name, Arg, sizeof(op->name));
if (len >= sizeof(op->name))
Config_Error_TooLong(Line, Var);
return;
}
if (strcasecmp(Var, "Password") == 0) {
/* Password of IRC operator */
len = strlcpy(op->pwd, Arg, sizeof(op->pwd));
if (len >= sizeof(op->pwd))
Config_Error_TooLong(Line, Var);
return;
}
if (strcasecmp(Var, "Mask") == 0) {
if (op->mask)
return; /* Hostname already configured */
op->mask = strdup_warn( Arg );
return;
}
Config_Error( LOG_ERR, "%s, line %d (section \"Operator\"): Unknown variable \"%s\"!",
NGIRCd_ConfFile, Line, Var );
} /* Handle_OPERATOR */
static void
Handle_SERVER( int Line, char *Var, char *Arg )
{
long port;
size_t len;
assert( Line > 0 );
assert( Var != NULL );
assert( Arg != NULL );
/* Ignore server block if no space is left in server configuration structure */
if( New_Server_Idx <= NONE ) return;
if( strcasecmp( Var, "Host" ) == 0 ) {
/* Hostname of the server */
len = strlcpy( New_Server.host, Arg, sizeof( New_Server.host ));
if (len >= sizeof( New_Server.host ))
Config_Error_TooLong ( Line, Var );
return;
}
if( strcasecmp( Var, "Name" ) == 0 ) {
/* Name of the server ("Nick"/"ID") */
len = strlcpy( New_Server.name, Arg, sizeof( New_Server.name ));
if (len >= sizeof( New_Server.name ))
Config_Error_TooLong( Line, Var );
return;
}
if (strcasecmp(Var, "Bind") == 0) {
if (ng_ipaddr_init(&New_Server.bind_addr, Arg, 0))
return;
Config_Error(LOG_ERR, "%s, line %d (section \"Server\"): Can't parse IP address \"%s\"",
NGIRCd_ConfFile, Line, Arg);
return;
}
if( strcasecmp( Var, "MyPassword" ) == 0 ) {
/* Password of this server which is sent to the peer */
if (*Arg == ':') {
Config_Error(LOG_ERR,
"%s, line %d (section \"Server\"): MyPassword must not start with ':'!",
NGIRCd_ConfFile, Line);
}
len = strlcpy( New_Server.pwd_in, Arg, sizeof( New_Server.pwd_in ));
if (len >= sizeof( New_Server.pwd_in ))
Config_Error_TooLong( Line, Var );
return;
}
if( strcasecmp( Var, "PeerPassword" ) == 0 ) {
/* Passwort of the peer which must be received */
len = strlcpy( New_Server.pwd_out, Arg, sizeof( New_Server.pwd_out ));
if (len >= sizeof( New_Server.pwd_out ))
Config_Error_TooLong( Line, Var );
return;
}
if( strcasecmp( Var, "Port" ) == 0 ) {
/* Port to which this server should connect */
port = atol( Arg );
if( port > 0 && port < 0xFFFF )
New_Server.port = (UINT16)port;
else
Config_Error( LOG_ERR, "%s, line %d (section \"Server\"): Illegal port number %ld!",
NGIRCd_ConfFile, Line, port );
return;
}
#ifdef SSL_SUPPORT
if( strcasecmp( Var, "SSLConnect" ) == 0 ) {
New_Server.SSLConnect = Check_ArgIsTrue(Arg);
return;
}
#endif
if( strcasecmp( Var, "Group" ) == 0 ) {
/* Server group */
#ifdef HAVE_ISDIGIT
if( ! isdigit( (int)*Arg ))
Config_Error_NaN( Line, Var );
else
#endif
New_Server.group = atoi( Arg );
return;
}
if( strcasecmp( Var, "Passive" ) == 0 ) {
if (Check_ArgIsTrue(Arg))
New_Server.flags |= CONF_SFLAG_DISABLED;
return;
}
if (strcasecmp(Var, "ServiceMask") == 0) {
len = strlcpy(New_Server.svs_mask, ngt_LowerStr(Arg),
sizeof(New_Server.svs_mask));
if (len >= sizeof(New_Server.svs_mask))
Config_Error_TooLong(Line, Var);
return;
}
Config_Error( LOG_ERR, "%s, line %d (section \"Server\"): Unknown variable \"%s\"!",
NGIRCd_ConfFile, Line, Var );
} /* Handle_SERVER */
static bool
Handle_Channelname(struct Conf_Channel *new_chan, const char *name)
{
size_t size = sizeof(new_chan->name);
char *dest = new_chan->name;
if (!Channel_IsValidName(name)) {
/*
* maybe user forgot to add a '#'.
* This is only here for user convenience.
*/
*dest = '#';
--size;
++dest;
}
return size > strlcpy(dest, name, size);
}
static void
Handle_CHANNEL(int Line, char *Var, char *Arg)
{
size_t len;
size_t chancount;
struct Conf_Channel *chan;
assert( Line > 0 );
assert( Var != NULL );
assert( Arg != NULL );
assert(Conf_Channel_Count > 0);
chancount = Conf_Channel_Count - 1;
chan = array_alloc(&Conf_Channels, sizeof(*chan), chancount);
if (!chan) {
Config_Error(LOG_ERR, "Could not allocate memory for predefined channel (%d:%s = %s)", Line, Var, Arg);
return;
}
if (strcasecmp(Var, "Name") == 0) {
if (!Handle_Channelname(chan, Arg))
Config_Error_TooLong(Line, Var);
return;
}
if (strcasecmp(Var, "Modes") == 0) {
/* Initial modes */
len = strlcpy(chan->modes, Arg, sizeof(chan->modes));
if (len >= sizeof(chan->modes))
Config_Error_TooLong( Line, Var );
return;
}
if( strcasecmp( Var, "Topic" ) == 0 ) {
/* Initial topic */
len = strlcpy(chan->topic, Arg, sizeof(chan->topic));
if (len >= sizeof(chan->topic))
Config_Error_TooLong( Line, Var );
return;
}
if( strcasecmp( Var, "Key" ) == 0 ) {
/* Initial Channel Key (mode k) */
len = strlcpy(chan->key, Arg, sizeof(chan->key));
if (len >= sizeof(chan->key))
Config_Error_TooLong(Line, Var);
return;
}
if( strcasecmp( Var, "MaxUsers" ) == 0 ) {
/* maximum user limit, mode l */
chan->maxusers = (unsigned long) atol(Arg);
if (chan->maxusers == 0)
Config_Error_NaN(Line, Var);
return;
}
if (strcasecmp(Var, "KeyFile") == 0) {
/* channel keys */
len = strlcpy(chan->keyfile, Arg, sizeof(chan->keyfile));
if (len >= sizeof(chan->keyfile))
Config_Error_TooLong(Line, Var);
return;
}
Config_Error( LOG_ERR, "%s, line %d (section \"Channel\"): Unknown variable \"%s\"!",
NGIRCd_ConfFile, Line, Var );
} /* Handle_CHANNEL */
static bool
Validate_Config(bool Configtest, bool Rehash)
{
/* Validate configuration settings. */
#ifdef DEBUG
int i, servers, servers_once;
#endif
bool config_valid = true;
char *ptr;
/* Validate configured server name, see RFC 2812 section 2.3.1 */
ptr = Conf_ServerName;
do {
if (*ptr >= 'a' && *ptr <= 'z') continue;
if (*ptr >= 'A' && *ptr <= 'Z') continue;
if (*ptr >= '0' && *ptr <= '9') continue;
if (ptr > Conf_ServerName) {
if (*ptr == '.' || *ptr == '-')
continue;
}
Conf_ServerName[0] = '\0';
break;
} while (*(++ptr));
if (!Conf_ServerName[0]) {
/* No server name configured! */
config_valid = false;
Config_Error(LOG_ALERT,
"No (valid) server name configured in \"%s\" (section 'Global': 'Name')!",
NGIRCd_ConfFile);
if (!Configtest && !Rehash) {
Config_Error(LOG_ALERT,
"%s exiting due to fatal errors!",
PACKAGE_NAME);
exit(1);
}
}
if (Conf_ServerName[0] && !strchr(Conf_ServerName, '.')) {
/* No dot in server name! */
config_valid = false;
Config_Error(LOG_ALERT,
"Invalid server name configured in \"%s\" (section 'Global': 'Name'): Dot missing!",
NGIRCd_ConfFile);
if (!Configtest) {
Config_Error(LOG_ALERT,
"%s exiting due to fatal errors!",
PACKAGE_NAME);
exit(1);
}
}
#ifdef STRICT_RFC
if (!Conf_ServerAdminMail[0]) {
/* No administrative contact configured! */
config_valid = false;
Config_Error(LOG_ALERT,
"No administrator email address configured in \"%s\" ('AdminEMail')!",
NGIRCd_ConfFile);
if (!Configtest) {
Config_Error(LOG_ALERT,
"%s exiting due to fatal errors!",
PACKAGE_NAME);
exit(1);
}
}
#endif
if (!Conf_ServerAdmin1[0] && !Conf_ServerAdmin2[0]
&& !Conf_ServerAdminMail[0]) {
/* No administrative information configured! */
Config_Error(LOG_WARNING,
"No administrative information configured but required by RFC!");
}
#ifdef PAM
if (Conf_ServerPwd[0])
Config_Error(LOG_ERR,
"This server uses PAM, \"Password\" will be ignored!");
#endif
#ifdef DEBUG
servers = servers_once = 0;
for (i = 0; i < MAX_SERVERS; i++) {
if (Conf_Server[i].name[0]) {
servers++;
if (Conf_Server[i].flags & CONF_SFLAG_ONCE)
servers_once++;
}
}
Log(LOG_DEBUG,
"Configuration: Operators=%d, Servers=%d[%d], Channels=%d",
Conf_Oper_Count, servers, servers_once, Conf_Channel_Count);
#endif
return config_valid;
} /* Validate_Config */
static void
Config_Error_TooLong ( const int Line, const char *Item )
{
Config_Error( LOG_WARNING, "%s, line %d: Value of \"%s\" too long!", NGIRCd_ConfFile, Line, Item );
}
static void
Config_Error_NaN( const int Line, const char *Item )
{
Config_Error( LOG_WARNING, "%s, line %d: Value of \"%s\" is not a number!",
NGIRCd_ConfFile, Line, Item );
}
#ifdef PROTOTYPES
static void Config_Error( const int Level, const char *Format, ... )
#else
static void Config_Error( Level, Format, va_alist )
const int Level;
const char *Format;
va_dcl
#endif
{
/* Error! Write to console and/or logfile. */
char msg[MAX_LOG_MSG_LEN];
va_list ap;
assert( Format != NULL );
#ifdef PROTOTYPES
va_start( ap, Format );
#else
va_start( ap );
#endif
vsnprintf( msg, MAX_LOG_MSG_LEN, Format, ap );
va_end( ap );
/* During "normal operations" the log functions of the daemon should
* be used, but during testing of the configuration file, all messages
* should go directly to the console: */
if (Use_Log) Log( Level, "%s", msg );
else puts( msg );
} /* Config_Error */
static void
Init_Server_Struct( CONF_SERVER *Server )
{
/* Initialize server configuration structur to default values */
assert( Server != NULL );
memset( Server, 0, sizeof (CONF_SERVER) );
Server->group = NONE;
Server->lasttry = time( NULL ) - Conf_ConnectRetry + STARTUP_DELAY;
if( NGIRCd_Passive ) Server->flags = CONF_SFLAG_DISABLED;
Proc_InitStruct(&Server->res_stat);
Server->conn_id = NONE;
memset(&Server->bind_addr, 0, sizeof(&Server->bind_addr));
} /* Init_Server_Struct */
/* -eof- */
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