/*
* ngIRCd -- The Next Generation IRC Daemon
* Copyright (c)2001-2019 Alexander Barton (alex@barton.de) and Contributors.
*
* 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.
*/
#include "portab.h"
/**
* @file
* Configuration management (reading, parsing & validation)
*/
#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 <time.h>
#include <unistd.h>
#include <pwd.h>
#include <grp.h>
#include <sys/types.h>
#include <dirent.h>
#include "ngircd.h"
#include "conn.h"
#include "channel.h"
#include "log.h"
#include "match.h"
#include "conf.h"
static bool Use_Log = true, Using_MotdFile = true;
static CONF_SERVER New_Server;
static int New_Server_Idx;
static char Conf_MotdFile[FNAME_LEN];
static char Conf_HelpFile[FNAME_LEN];
static char Conf_IncludeDir[FNAME_LEN];
static void Set_Defaults PARAMS(( bool InitServers ));
static bool Read_Config PARAMS(( bool TestOnly, bool IsStarting ));
static void Read_Config_File PARAMS(( const char *File, FILE *fd ));
static bool Validate_Config PARAMS(( bool TestOnly, bool Rehash ));
static void Handle_GLOBAL PARAMS((const char *File, int Line,
char *Var, char *Arg ));
static void Handle_LIMITS PARAMS((const char *File, int Line,
char *Var, char *Arg ));
static void Handle_OPTIONS PARAMS((const char *File, int Line,
char *Var, char *Arg ));
static void Handle_OPERATOR PARAMS((const char *File, int Line,
char *Var, char *Arg ));
static void Handle_SERVER PARAMS((const char *File, int Line,
char *Var, char *Arg ));
static void Handle_CHANNEL PARAMS((const char *File, int Line,
char *Var, char *Arg ));
static void Config_Error PARAMS((const int Level, const char *Format, ...));
static void Config_Error_NaN PARAMS((const char *File, const int LINE,
const char *Value));
static void Config_Error_Section PARAMS((const char *File, const int Line,
const char *Item, const char *Section));
static void Config_Error_TooLong PARAMS((const char *File, 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 HAVE_LIBSSL
#define DEFAULT_CIPHERS "HIGH:!aNULL:@STRENGTH:!SSLv3"
#endif
#ifdef HAVE_LIBGNUTLS
#define DEFAULT_CIPHERS "SECURE128:-VERS-SSL3.0"
#endif
#ifdef SSL_SUPPORT
static void Handle_SSL PARAMS((const char *File, int Line, char *Var, char *Ark));
struct SSLOptions Conf_SSLOptions;
/**
* Initialize SSL configuration.
*/
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);
array_free(&Conf_SSLOptions.ListenPorts);
free(Conf_SSLOptions.CipherList);
Conf_SSLOptions.CipherList = NULL;
}
/**
* Check if the current configuration uses/requires SSL.
*
* @returns true if SSL is used and should be initialized.
*/
GLOBAL bool
Conf_SSLInUse(void)
{
int i;
/* SSL listen ports configured? */
if (array_bytes(&Conf_SSLOptions.ListenPorts))
return true;
for (i = 0; i < MAX_SERVERS; i++) {
if (Conf_Server[i].port > 0
&& Conf_Server[i].SSLConnect)
return true;
}
return false;
}
/**
* Make sure that a configured file is readable.
*
* Currently, this function is only used for SSL-related options ...
*
* @param Var Configuration variable
* @param Filename Configured filename
*/
static void
CheckFileReadable(const char *Var, const char *Filename)
{
FILE *fp;
if (!Filename)
return;
fp = fopen(Filename, "r");
if (fp)
fclose(fp);
else
Config_Error(LOG_ERR, "Can't read \"%s\" (\"%s\"): %s",
Filename, Var, strerror(errno));
}
#endif
/**
* Duplicate string and warn on errors.
*
* @returns Pointer to string on success, NULL otherwise.
*/
static char *
strdup_warn(const char *str)
{
char *ptr = strdup(str);
if (!ptr)
Config_Error(LOG_ERR,
"Could not allocate memory for string: %s", str);
return ptr;
}
/**
* Output a comma separated list of ports (integer values).
*/
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);
}
/**
* Parse a comma separated string into an array of port numbers (integers).
*/
static void
ports_parse(array *a, const char *File, int Line, char *Arg)
{
char *ptr;
int port;
UINT16 port16;
array_trunc(a);
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",
File, Line, port, strerror(errno));
} else {
Config_Error( LOG_ERR, "%s, line %d (section \"Global\"): Illegal port number %ld!",
File, Line, port );
}
ptr = strtok( NULL, "," );
}
}
/**
* Initialize configuration module.
*/
GLOBAL void
Conf_Init( void )
{
Read_Config(false, true);
Validate_Config(false, false);
}
/**
* "Rehash" (reload) server configuration.
*
* @returns true if configuration has been re-read, false on errors.
*/
GLOBAL bool
Conf_Rehash( void )
{
if (!Read_Config(false, false))
return false;
Validate_Config(false, true);
/* Update CLIENT structure of local server */
Client_SetInfo(Client_ThisServer(), Conf_ServerInfo);
return true;
}
/**
* Output a boolean value as "yes/no" string.
*/
static const char*
yesno_to_str(int boolean_value)
{
if (boolean_value)
return "yes";
return "no";
}
/**
* Free all IRC operator configuration structures.
*/
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);
}
/**
* Output all IRC operator configuration structures.
*/
static void
opers_puts(void)
{
struct Conf_Oper *op;
size_t count, i;
count = array_length(&Conf_Opers, sizeof(*op));
op = array_start(&Conf_Opers);
for (i = 0; i < count; i++, op++) {
if (!op->name[0])
continue;
puts("[OPERATOR]");
printf(" Name = %s\n", op->name);
printf(" Password = %s\n", op->pwd);
printf(" Mask = %s\n\n", op->mask ? op->mask : "");
}
}
/**
* Read configuration, validate and output it.
*
* This function waits for a keypress of the user when stdin/stdout are valid
* tty's ("you can read our nice message and we can read in your keypress").
*
* @return 0 on success, 1 on failure(s); therefore the result code can
* directly be used by exit() when running "ngircd --configtest".
*/
GLOBAL int
Conf_Test( void )
{
struct passwd *pwd;
struct group *grp;
unsigned int i, j;
bool config_valid;
size_t predef_channel_count;
struct Conf_Channel *predef_chan;
Use_Log = false;
if (!Read_Config(true, true))
return 1;
config_valid = Validate_Config(true, false);
/* Valid tty? */
if(isatty(fileno(stdin)) && isatty(fileno(stdout))) {
puts("OK, press enter to see a dump of your server configuration ...");
getchar();
} else
puts("Ok, dump of your server configuration follows:\n");
puts("[GLOBAL]");
printf(" Name = %s\n", Conf_ServerName);
printf(" AdminInfo1 = %s\n", Conf_ServerAdmin1);
printf(" AdminInfo2 = %s\n", Conf_ServerAdmin2);
printf(" AdminEMail = %s\n", Conf_ServerAdminMail);
printf(" HelpFile = %s\n", Conf_HelpFile);
printf(" Info = %s\n", Conf_ServerInfo);
printf(" Listen = %s\n", Conf_ListenAddress);
if (Using_MotdFile) {
printf(" MotdFile = %s\n", Conf_MotdFile);
printf(" MotdPhrase =\n");
} else {
printf(" MotdFile = \n");
printf(" MotdPhrase = %s\n", array_bytes(&Conf_Motd)
? (const char*) array_start(&Conf_Motd) : "");
}
printf(" Network = %s\n", Conf_Network);
if (!Conf_PAM)
printf(" Password = %s\n", Conf_ServerPwd);
printf(" PidFile = %s\n", Conf_PidFile);
printf(" Ports = ");
ports_puts(&Conf_ListenPorts);
grp = getgrgid(Conf_GID);
if (grp)
printf(" ServerGID = %s\n", grp->gr_name);
else
printf(" ServerGID = %ld\n", (long)Conf_GID);
pwd = getpwuid(Conf_UID);
if (pwd)
printf(" ServerUID = %s\n", pwd->pw_name);
else
printf(" ServerUID = %ld\n", (long)Conf_UID);
puts("");
puts("[LIMITS]");
printf(" ConnectRetry = %d\n", Conf_ConnectRetry);
printf(" IdleTimeout = %d\n", Conf_IdleTimeout);
printf(" MaxConnections = %d\n", Conf_MaxConnections);
printf(" MaxConnectionsIP = %d\n", Conf_MaxConnectionsIP);
printf(" MaxJoins = %d\n", Conf_MaxJoins > 0 ? Conf_MaxJoins : -1);
printf(" MaxNickLength = %u\n", Conf_MaxNickLength - 1);
printf(" MaxPenaltyTime = %ld\n", (long)Conf_MaxPenaltyTime);
printf(" MaxListSize = %d\n", Conf_MaxListSize);
printf(" PingTimeout = %d\n", Conf_PingTimeout);
printf(" PongTimeout = %d\n", Conf_PongTimeout);
puts("");
puts("[OPTIONS]");
printf(" AllowedChannelTypes = %s\n", Conf_AllowedChannelTypes);
printf(" AllowRemoteOper = %s\n", yesno_to_str(Conf_AllowRemoteOper));
printf(" ChrootDir = %s\n", Conf_Chroot);
printf(" CloakHost = %s\n", Conf_CloakHost);
printf(" CloakHostModeX = %s\n", Conf_CloakHostModeX);
printf(" CloakHostSalt = %s\n", Conf_CloakHostSalt);
printf(" CloakUserToNick = %s\n", yesno_to_str(Conf_CloakUserToNick));
#ifdef WANT_IPV6
printf(" ConnectIPv4 = %s\n", yesno_to_str(Conf_ConnectIPv6));
printf(" ConnectIPv6 = %s\n", yesno_to_str(Conf_ConnectIPv4));
#endif
printf(" DefaultUserModes = %s\n", Conf_DefaultUserModes);
printf(" DNS = %s\n", yesno_to_str(Conf_DNS));
#ifdef IDENT
printf(" Ident = %s\n", yesno_to_str(Conf_Ident));
#endif
printf(" IncludeDir = %s\n", Conf_IncludeDir);
printf(" MorePrivacy = %s\n", yesno_to_str(Conf_MorePrivacy));
printf(" NoticeBeforeRegistration = %s\n", yesno_to_str(Conf_NoticeBeforeRegistration));
printf(" OperCanUseMode = %s\n", yesno_to_str(Conf_OperCanMode));
printf(" OperChanPAutoOp = %s\n", yesno_to_str(Conf_OperChanPAutoOp));
printf(" OperServerMode = %s\n", yesno_to_str(Conf_OperServerMode));
#ifdef PAM
printf(" PAM = %s\n", yesno_to_str(Conf_PAM));
printf(" PAMIsOptional = %s\n", yesno_to_str(Conf_PAMIsOptional));
printf(" PAMServiceName = %s\n", Conf_PAMServiceName);
#endif
#ifndef STRICT_RFC
printf(" RequireAuthPing = %s\n", yesno_to_str(Conf_AuthPing));
#endif
printf(" ScrubCTCP = %s\n", yesno_to_str(Conf_ScrubCTCP));
#ifdef SYSLOG
printf(" SyslogFacility = %s\n",
ngt_SyslogFacilityName(Conf_SyslogFacility));
#endif
printf(" WebircPassword = %s\n", Conf_WebircPwd);
puts("");
#ifdef SSL_SUPPORT
puts("[SSL]");
printf(" CertFile = %s\n", Conf_SSLOptions.CertFile
? Conf_SSLOptions.CertFile : "");
printf(" CipherList = %s\n", Conf_SSLOptions.CipherList ?
Conf_SSLOptions.CipherList : DEFAULT_CIPHERS);
printf(" DHFile = %s\n", Conf_SSLOptions.DHFile
? Conf_SSLOptions.DHFile : "");
printf(" KeyFile = %s\n", Conf_SSLOptions.KeyFile
? Conf_SSLOptions.KeyFile : "");
if (array_bytes(&Conf_SSLOptions.KeyFilePassword))
puts(" KeyFilePassword = <secret>");
else
puts(" KeyFilePassword = ");
array_free_wipe(&Conf_SSLOptions.KeyFilePassword);
printf(" Ports = ");
ports_puts(&Conf_SSLOptions.ListenPorts);
puts("");
#endif
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);
for(j = 0; j < predef_chan->modes_num; j++)
printf(" Modes = %s\n", predef_chan->modes[j]);
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);
}
/**
* Remove connection information from configured server.
*
* If the server is set as "once", delete it from our configuration;
* otherwise set the time for the next connection attempt.
*
* Non-server connections will be silently ignored.
*/
GLOBAL void
Conf_UnsetServer( CONN_ID Idx )
{
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 {
/* "Short" connection, enforce "ConnectRetry"
* but randomize it a little bit: 15 seconds. */
Conf_Server[i].lasttry =
#ifdef HAVE_ARC4RANDOM
t + (arc4random() % 15);
#else
t + rand() / (RAND_MAX / 15);
#endif
}
}
}
}
/**
* Set connection information for specified configured server.
*/
GLOBAL bool
Conf_SetServer( int ConfServer, CONN_ID Idx )
{
assert( ConfServer > NONE );
assert( Idx > NONE );
if (Conf_Server[ConfServer].conn_id > NONE &&
Conf_Server[ConfServer].conn_id != Idx) {
Log(LOG_ERR,
"Connection %d: Server configuration of \"%s\" already in use by connection %d!",
Idx, Conf_Server[ConfServer].name,
Conf_Server[ConfServer].conn_id);
Conn_Close(Idx, NULL, "Server configuration already in use", true);
return false;
}
Conf_Server[ConfServer].conn_id = Idx;
return true;
}
/**
* Get index of server in configuration structure.
*/
GLOBAL int
Conf_GetServer( CONN_ID Idx )
{
int i = 0;
assert( Idx > NONE );
for( i = 0; i < MAX_SERVERS; i++ ) {
if( Conf_Server[i].conn_id == Idx ) return i;
}
return NONE;
}
/**
* Enable a server by name and adjust its port number.
*
* @returns true if a server has been enabled and now has a valid port
* number and host name for outgoing connections.
*/
GLOBAL bool
Conf_EnableServer( const char *Name, UINT16 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;
}
/**
* Enable a server by name.
*
* The server is only usable as outgoing server, if it has set a valid port
* number for outgoing connections!
* If not, you have to use Conf_EnableServer() function to make it available.
*
* @returns true if a server has been enabled; false otherwise.
*/
GLOBAL bool
Conf_EnablePassiveServer(const char *Name)
{
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;
Conf_Server[i].lasttry = 0;
return true;
}
}
return false;
}
/**
* Disable a server by name.
* An already established connection will be disconnected.
*
* @returns true if a server was found and has been disabled.
*/
GLOBAL bool
Conf_DisableServer( const char *Name )
{
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;
}
/**
* Add a new remote server to our configuration.
*
* @param Name Name of the new server.
* @param Port Port number to connect to or 0 for incoming connections.
* @param Host Host name to connect to.
* @param MyPwd Password that will be sent to the peer.
* @param PeerPwd Password that must be received from the peer.
* @returns true if the new server has been added; false otherwise.
*/
GLOBAL bool
Conf_AddServer(const char *Name, UINT16 Port, const char *Host,
const char *MyPwd, const char *PeerPwd)
{
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;
}
/**
* Check if the given nickname is reserved for services on a particular server.
*
* @param ConfServer The server index to check.
* @param Nick The nickname to check.
* @returns true if the given nickname belongs to an "IRC service".
*/
GLOBAL bool
Conf_NickIsService(int ConfServer, const char *Nick)
{
assert (ConfServer >= 0);
assert (ConfServer < MAX_SERVERS);
return MatchCaseInsensitiveList(Conf_Server[ConfServer].svs_mask,
Nick, ",");
}
/**
* Check if the given nickname is blocked for "normal client" use.
*
* @param Nick The nickname to check.
* @returns true if the given nickname belongs to an "IRC service".
*/
GLOBAL bool
Conf_NickIsBlocked(const char *Nick)
{
int i;
for(i = 0; i < MAX_SERVERS; i++) {
if (!Conf_Server[i].name[0])
continue;
if (Conf_NickIsService(i, Nick))
return true;
}
return false;
}
/**
* Initialize configuration settings with their default values.
*/
static void
Set_Defaults(bool InitServers)
{
int i;
char random[RANDOM_SALT_LEN + 1];
/* Global */
strcpy(Conf_ServerName, "");
strcpy(Conf_ServerAdmin1, "");
strcpy(Conf_ServerAdmin2, "");
strcpy(Conf_ServerAdminMail, "");
snprintf(Conf_ServerInfo, sizeof Conf_ServerInfo, "%s %s",
PACKAGE_NAME, PACKAGE_VERSION);
strcpy(Conf_Network, "");
free(Conf_ListenAddress);
Conf_ListenAddress = NULL;
array_free(&Conf_ListenPorts);
array_free(&Conf_Motd);
array_free(&Conf_Helptext);
strlcpy(Conf_MotdFile, SYSCONFDIR, sizeof(Conf_MotdFile));
strlcat(Conf_MotdFile, MOTD_FILE, sizeof(Conf_MotdFile));
strlcpy(Conf_HelpFile, DOCDIR, sizeof(Conf_HelpFile));
strlcat(Conf_HelpFile, HELP_FILE, sizeof(Conf_HelpFile));
strcpy(Conf_ServerPwd, "");
strlcpy(Conf_PidFile, PID_FILE, sizeof(Conf_PidFile));
Conf_UID = Conf_GID = 0;
/* Limits */
Conf_ConnectRetry = 60;
Conf_IdleTimeout = 0;
Conf_MaxConnections = 0;
Conf_MaxConnectionsIP = 5;
Conf_MaxJoins = 10;
Conf_MaxNickLength = CLIENT_NICK_LEN_DEFAULT;
Conf_MaxPenaltyTime = -1;
Conf_MaxListSize = 100;
Conf_PingTimeout = 120;
Conf_PongTimeout = 20;
/* Options */
strlcpy(Conf_AllowedChannelTypes, CHANTYPES,
sizeof(Conf_AllowedChannelTypes));
Conf_AllowRemoteOper = false;
#ifndef STRICT_RFC
Conf_AuthPing = false;
#endif
strlcpy(Conf_Chroot, CHROOT_DIR, sizeof(Conf_Chroot));
strcpy(Conf_CloakHost, "");
strcpy(Conf_CloakHostModeX, "");
strlcpy(Conf_CloakHostSalt, ngt_RandomStr(random, RANDOM_SALT_LEN),
sizeof(Conf_CloakHostSalt));
Conf_CloakUserToNick = false;
Conf_ConnectIPv4 = true;
#ifdef WANT_IPV6
Conf_ConnectIPv6 = true;
#else
Conf_ConnectIPv6 = false;
#endif
strcpy(Conf_DefaultUserModes, "");
Conf_DNS = true;
#ifdef IDENTAUTH
Conf_Ident = true;
#else
Conf_Ident = false;
#endif
strcpy(Conf_IncludeDir, "");
Conf_MorePrivacy = false;
Conf_NoticeBeforeRegistration = false;
Conf_OperCanMode = false;
Conf_OperChanPAutoOp = true;
Conf_OperServerMode = false;
#ifdef PAM
Conf_PAM = true;
#else
Conf_PAM = false;
#endif
Conf_PAMIsOptional = false;
strcpy(Conf_PAMServiceName, "ngircd");
Conf_ScrubCTCP = false;
#ifdef SYSLOG
#ifdef LOG_LOCAL5
Conf_SyslogFacility = LOG_LOCAL5;
#else
Conf_SyslogFacility = 0;
#endif
#endif
/* Initialize server configuration structures */
if (InitServers) {
for (i = 0; i < MAX_SERVERS;
Init_Server_Struct(&Conf_Server[i++]));
}
}
/**
* Get number of configured listening ports.
*
* @returns The number of ports (IPv4+IPv6) on which the server should listen.
*/
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;
}
/**
* Read contents of a text file into an array.
*
* This function is used to read the MOTD and help text file, for example.
*
* @param Filename Name of the file to read.
* @return true, when the file has been read in.
*/
static bool
Read_TextFile(const char *Filename, const char *Name, array *Destination)
{
char line[COMMAND_LEN];
FILE *fp;
int line_no = 1;
if (*Filename == '\0')
return false;
fp = fopen(Filename, "r");
if (!fp) {
Config_Error(LOG_ERR, "Can't read %s file \"%s\": %s",
Name, Filename, strerror(errno));
return false;
}
array_free(Destination);
while (fgets(line, (int)sizeof line, fp)) {
ngt_TrimLastChr(line, '\n');
/* add text including \0 */
if (!array_catb(Destination, line, strlen(line) + 1)) {
Log(LOG_ERR, "Cannot read/add \"%s\", line %d: %s",
Filename, line_no, strerror(errno));
break;
}
line_no++;
}
fclose(fp);
return true;
}
/**
* Read ngIRCd configuration file.
*
* Please note that this function uses exit(1) on fatal errors and therefore
* can result in ngIRCd terminating!
*
* @param IsStarting Flag indicating if ngIRCd is starting or not.
* @returns true when the configuration file has been read
* successfully; false otherwise.
*/
static bool
Read_Config(bool TestOnly, bool IsStarting)
{
const UINT16 defaultport = 6667;
char *ptr, file[FNAME_LEN];
struct dirent *entry;
int i, n;
FILE *fd;
DIR *dh;
Config_Error(LOG_INFO, "Using configuration file \"%s\" ...", NGIRCd_ConfFile);
/* 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 (!IsStarting)
return false;
Config_Error( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME );
exit( 1 );
}
opers_free();
Set_Defaults(IsStarting);
if (TestOnly)
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 */
Init_Server_Struct( &New_Server );
New_Server_Idx = NONE;
#ifdef SSL_SUPPORT
ConfSSL_Init();
#endif
Read_Config_File(NGIRCd_ConfFile, fd);
fclose(fd);
if (Conf_IncludeDir[0]) {
dh = opendir(Conf_IncludeDir);
if (!dh)
Config_Error(LOG_ALERT,
"Can't open include directory \"%s\": %s",
Conf_IncludeDir, strerror(errno));
} else {
strlcpy(Conf_IncludeDir, SYSCONFDIR, sizeof(Conf_IncludeDir));
strlcat(Conf_IncludeDir, CONFIG_DIR, sizeof(Conf_IncludeDir));
dh = opendir(Conf_IncludeDir);
}
/* Include further configuration files, if IncludeDir is available */
if (dh) {
while ((entry = readdir(dh)) != NULL) {
ptr = strrchr(entry->d_name, '.');
if (!ptr || strcasecmp(ptr, ".conf") != 0)
continue;
snprintf(file, sizeof(file), "%s/%s",
Conf_IncludeDir, entry->d_name);
if (TestOnly)
Config_Error(LOG_INFO,
"Reading configuration from \"%s\" ...",
file);
fd = fopen(file, "r");
if (fd) {
Read_Config_File(file, fd);
fclose(fd);
} else
Config_Error(LOG_ALERT,
"Can't read configuration \"%s\": %s",
file, strerror(errno));
}
closedir(dh);
}
/* 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);
}
/* No MOTD phrase configured? (re)try motd file. */
if (array_bytes(&Conf_Motd) == 0) {
if (Read_TextFile(Conf_MotdFile, "MOTD", &Conf_Motd))
Using_MotdFile = true;
}
/* Try to read ngIRCd help text file. */
(void)Read_TextFile(Conf_HelpFile, "help text", &Conf_Helptext);
if (!array_bytes(&Conf_Helptext))
Config_Error(LOG_WARNING,
"No help text available, HELP command will be of limited use.");
#ifdef SSL_SUPPORT
/* Make sure that all SSL-related files are readable */
CheckFileReadable("CertFile", Conf_SSLOptions.CertFile);
CheckFileReadable("DHFile", Conf_SSLOptions.DHFile);
CheckFileReadable("KeyFile", Conf_SSLOptions.KeyFile);
/* Set the default ciphers if none were configured */
if (!Conf_SSLOptions.CipherList)
Conf_SSLOptions.CipherList = strdup_warn(DEFAULT_CIPHERS);
#endif
return true;
}
/**
* Read in and handle a configuration file.
*
* @param File Name of the configuration file.
* @param fd File descriptor already opened for reading.
*/
static void
Read_Config_File(const char *File, FILE *fd)
{
char section[LINE_LEN], str[LINE_LEN], *var, *arg, *ptr;
int i, line = 0;
size_t count;
/* Read configuration file */
section[0] = '\0';
while (true) {
if (!fgets(str, sizeof(str), fd))
break;
ngt_TrimStr(str);
line++;
/* Skip comments and empty lines */
if (str[0] == ';' || str[0] == '#' || str[0] == '\0')
continue;
if (strlen(str) >= sizeof(str) - 1) {
Config_Error(LOG_WARNING, "%s, line %d too long!",
File, line);
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
|| strcasecmp(section, "[LIMITS]") == 0
|| strcasecmp(section, "[OPTIONS]") == 0
#ifdef SSL_SUPPORT
|| strcasecmp(section, "[SSL]") == 0
#endif
)
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) {
count = array_length(&Conf_Channels,
sizeof(struct
Conf_Channel));
if (!array_alloc
(&Conf_Channels,
sizeof(struct Conf_Channel), count)) {
Config_Error(LOG_ERR,
"Could not allocate memory for new operator (line %d)",
line);
}
continue;
}
if (strcasecmp(section, "[OPERATOR]") == 0) {
count = array_length(&Conf_Opers,
sizeof(struct Conf_Oper));
if (!array_alloc(&Conf_Opers,
sizeof(struct Conf_Oper),
count)) {
Config_Error(LOG_ERR,
"Could not allocate memory for new channel (line &d)",
line);
}
continue;
}
Config_Error(LOG_ERR,
"%s, line %d: Unknown section \"%s\"!",
File, 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!",
File, line);
continue;
}
*ptr = '\0';
var = str;
ngt_TrimStr(var);
arg = ptr + 1;
ngt_TrimStr(arg);
if (strcasecmp(section, "[GLOBAL]") == 0)
Handle_GLOBAL(File, line, var, arg);
else if (strcasecmp(section, "[LIMITS]") == 0)
Handle_LIMITS(File, line, var, arg);
else if (strcasecmp(section, "[OPTIONS]") == 0)
Handle_OPTIONS(File, line, var, arg);
#ifdef SSL_SUPPORT
else if (strcasecmp(section, "[SSL]") == 0)
Handle_SSL(File, line, var, arg);
#endif
else if (strcasecmp(section, "[OPERATOR]") == 0)
Handle_OPERATOR(File, line, var, arg);
else if (strcasecmp(section, "[SERVER]") == 0)
Handle_SERVER(File, line, var, arg);
else if (strcasecmp(section, "[CHANNEL]") == 0)
Handle_CHANNEL(File, line, var, arg);
else
Config_Error(LOG_ERR,
"%s, line %d: Variable \"%s\" outside section!",
File, line, var);
}
}
/**
* Check whether a string argument is "true" or "false".
*
* @param Arg Input string.
* @returns true if the input string has been parsed as "yes", "true"
* (case insensitive) or a non-zero integer value.
*/
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;
}
/**
* Handle setting of "MaxNickLength".
*
* @param Line Line number in configuration file.
* @raram Arg Input string.
* @returns New configured maximum nickname length.
*/
static unsigned int
Handle_MaxNickLength(const char *File, 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!",
File, 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!",
File, Line);
return 2;
}
return new;
}
/**
* Output a warning messages if IDENT is configured but not compiled in.
*/
static void
WarnIdent(const char UNUSED *File, int UNUSED Line)
{
#ifndef IDENTAUTH
if (Conf_Ident) {
/* user has enabled ident lookups explicitly, but ... */
Config_Error(LOG_WARNING,
"%s: line %d: \"Ident = yes\", but ngircd was built without IDENT support!",
File, Line);
}
#endif
}
/**
* Output a warning messages if IPv6 is configured but not compiled in.
*/
static void
WarnIPv6(const char UNUSED *File, int UNUSED Line)
{
#ifndef WANT_IPV6
if (Conf_ConnectIPv6) {
/* user has enabled IPv6 explicitly, but ... */
Config_Error(LOG_WARNING,
"%s: line %d: \"ConnectIPv6 = yes\", but ngircd was built without IPv6 support!",
File, Line);
}
#endif
}
/**
* Output a warning messages if PAM is configured but not compiled in.
*/
static void
WarnPAM(const char UNUSED *File, int UNUSED Line)
{
#ifndef PAM
if (Conf_PAM) {
Config_Error(LOG_WARNING,
"%s: line %d: \"PAM = yes\", but ngircd was built without PAM support!",
File, Line);
}
#endif
}
/**
* Handle variable in [Global] configuration section.
*
* @param Line Line numer in configuration file.
* @param Var Variable name.
* @param Arg Variable argument.
*/
static void
Handle_GLOBAL(const char *File, int Line, char *Var, char *Arg )
{
struct passwd *pwd;
struct group *grp;
size_t len;
char *ptr;
assert(File != NULL);
assert(Line > 0);
assert(Var != NULL);
assert(Arg != NULL);
if (strcasecmp(Var, "Name") == 0) {
len = strlcpy(Conf_ServerName, Arg, sizeof(Conf_ServerName));
if (len >= sizeof(Conf_ServerName))
Config_Error_TooLong(File, Line, Var);
return;
}
if (strcasecmp(Var, "AdminInfo1") == 0) {
len = strlcpy(Conf_ServerAdmin1, Arg, sizeof(Conf_ServerAdmin1));
if (len >= sizeof(Conf_ServerAdmin1))
Config_Error_TooLong(File, Line, Var);
return;
}
if (strcasecmp(Var, "AdminInfo2") == 0) {
len = strlcpy(Conf_ServerAdmin2, Arg, sizeof(Conf_ServerAdmin2));
if (len >= sizeof(Conf_ServerAdmin2))
Config_Error_TooLong(File, Line, Var);
return;
}
if (strcasecmp(Var, "AdminEMail") == 0) {
len = strlcpy(Conf_ServerAdminMail, Arg,
sizeof(Conf_ServerAdminMail));
if (len >= sizeof(Conf_ServerAdminMail))
Config_Error_TooLong(File, Line, Var);
return;
}
if (strcasecmp(Var, "Info") == 0) {
len = strlcpy(Conf_ServerInfo, Arg, sizeof(Conf_ServerInfo));
if (len >= sizeof(Conf_ServerInfo))
Config_Error_TooLong(File, Line, Var);
return;
}
if (strcasecmp(Var, "HelpFile") == 0) {
len = strlcpy(Conf_HelpFile, Arg, sizeof(Conf_HelpFile));
if (len >= sizeof(Conf_HelpFile))
Config_Error_TooLong(File, Line, Var);
return;
}
if (strcasecmp(Var, "Listen") == 0) {
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;
}
if (strcasecmp(Var, "MotdFile") == 0) {
len = strlcpy(Conf_MotdFile, Arg, sizeof(Conf_MotdFile));
if (len >= sizeof(Conf_MotdFile))
Config_Error_TooLong(File, Line, Var);
return;
}
if (strcasecmp(Var, "MotdPhrase") == 0) {
len = strlen(Arg);
if (len == 0)
return;
if (len >= 127) {
Config_Error_TooLong(File, Line, Var);
return;
}
if (!array_copyb(&Conf_Motd, Arg, len + 1))
Config_Error(LOG_WARNING,
"%s, line %d: Could not append MotdPhrase: %s",
File, Line, strerror(errno));
Using_MotdFile = false;
return;
}
if (strcasecmp(Var, "Network") == 0) {
len = strlcpy(Conf_Network, Arg, sizeof(Conf_Network));
if (len >= sizeof(Conf_Network))
Config_Error_TooLong(File, Line, Var);
ptr = strchr(Conf_Network, ' ');
if (ptr) {
Config_Error(LOG_WARNING,
"%s, line %d: \"Network\" can't contain spaces!",
File, Line);
*ptr = '\0';
}
return;
}
if(strcasecmp(Var, "Password") == 0) {
len = strlcpy(Conf_ServerPwd, Arg, sizeof(Conf_ServerPwd));
if (len >= sizeof(Conf_ServerPwd))
Config_Error_TooLong(File, Line, Var);
return;
}
if (strcasecmp(Var, "PidFile") == 0) {
len = strlcpy(Conf_PidFile, Arg, sizeof(Conf_PidFile));
if (len >= sizeof(Conf_PidFile))
Config_Error_TooLong(File, Line, Var);
return;
}
if (strcasecmp(Var, "Ports") == 0) {
ports_parse(&Conf_ListenPorts, File, Line, Arg);
return;
}
if (strcasecmp(Var, "ServerGID") == 0) {
grp = getgrnam(Arg);
if (grp)
Conf_GID = grp->gr_gid;
else {
Conf_GID = (unsigned int)atoi(Arg);
if (!Conf_GID && strcmp(Arg, "0"))
Config_Error(LOG_WARNING,
"%s, line %d: Value of \"%s\" is not a valid group name or ID!",
File, Line, Var);
}
return;
}
if (strcasecmp(Var, "ServerUID") == 0) {
pwd = getpwnam(Arg);
if (pwd)
Conf_UID = pwd->pw_uid;
else {
Conf_UID = (unsigned int)atoi(Arg);
if (!Conf_UID && strcmp(Arg, "0"))
Config_Error(LOG_WARNING,
"%s, line %d: Value of \"%s\" is not a valid user name or ID!",
File, Line, Var);
}
return;
}
Config_Error_Section(File, Line, Var, "Global");
}
/**
* Handle variable in [Limits] configuration section.
*
* @param Line Line numer in configuration file.
* @param Var Variable name.
* @param Arg Variable argument.
*/
static void
Handle_LIMITS(const char *File, int Line, char *Var, char *Arg)
{
assert(File != NULL);
assert(Line > 0);
assert(Var != NULL);
assert(Arg != NULL);
if (strcasecmp(Var, "ConnectRetry") == 0) {
Conf_ConnectRetry = atoi(Arg);
if (Conf_ConnectRetry < 5) {
Config_Error(LOG_WARNING,
"%s, line %d: Value of \"ConnectRetry\" too low!",
File, Line);
Conf_ConnectRetry = 5;
}
return;
}
if (strcasecmp(Var, "IdleTimeout") == 0) {
Conf_IdleTimeout = atoi(Arg);
if (!Conf_IdleTimeout && strcmp(Arg, "0"))
Config_Error_NaN(File, Line, Var);
return;
}
if (strcasecmp(Var, "MaxConnections") == 0) {
Conf_MaxConnections = atoi(Arg);
if (!Conf_MaxConnections && strcmp(Arg, "0"))
Config_Error_NaN(File, Line, Var);
return;
}
if (strcasecmp(Var, "MaxConnectionsIP") == 0) {
Conf_MaxConnectionsIP = atoi(Arg);
if (!Conf_MaxConnectionsIP && strcmp(Arg, "0"))
Config_Error_NaN(File, Line, Var);
return;
}
if (strcasecmp(Var, "MaxJoins") == 0) {
Conf_MaxJoins = atoi(Arg);
if (!Conf_MaxJoins && strcmp(Arg, "0"))
Config_Error_NaN(File, Line, Var);
return;
}
if (strcasecmp(Var, "MaxNickLength") == 0) {
Conf_MaxNickLength = Handle_MaxNickLength(File, Line, Arg);
return;
}
if (strcasecmp(Var, "MaxListSize") == 0) {
Conf_MaxListSize = atoi(Arg);
if (!Conf_MaxListSize && strcmp(Arg, "0"))
Config_Error_NaN(File, Line, Var);
return;
}
if (strcasecmp(Var, "MaxPenaltyTime") == 0) {
Conf_MaxPenaltyTime = atol(Arg);
if (Conf_MaxPenaltyTime < -1)
Conf_MaxPenaltyTime = -1; /* "unlimited" */
return;
}
if (strcasecmp(Var, "PingTimeout") == 0) {
Conf_PingTimeout = atoi(Arg);
if (Conf_PingTimeout < 5) {
Config_Error(LOG_WARNING,
"%s, line %d: Value of \"PingTimeout\" too low!",
File, Line);
Conf_PingTimeout = 5;
}
return;
}
if (strcasecmp(Var, "PongTimeout") == 0) {
Conf_PongTimeout = atoi(Arg);
if (Conf_PongTimeout < 5) {
Config_Error(LOG_WARNING,
"%s, line %d: Value of \"PongTimeout\" too low!",
File, Line);
Conf_PongTimeout = 5;
}
return;
}
Config_Error_Section(File, Line, Var, "Limits");
}
/**
* Handle variable in [Options] configuration section.
*
* @param Line Line numer in configuration file.
* @param Var Variable name.
* @param Arg Variable argument.
*/
static void
Handle_OPTIONS(const char *File, int Line, char *Var, char *Arg)
{
size_t len;
char *p;
assert(File != NULL);
assert(Line > 0);
assert(Var != NULL);
assert(Arg != NULL);
if (strcasecmp(Var, "AllowedChannelTypes") == 0) {
p = Arg;
Conf_AllowedChannelTypes[0] = '\0';
while (*p) {
if (strchr(Conf_AllowedChannelTypes, *p)) {
/* Prefix is already included; ignore it */
p++;
continue;
}
if (strchr(CHANTYPES, *p)) {
len = strlen(Conf_AllowedChannelTypes) + 1;
assert(len < sizeof(Conf_AllowedChannelTypes));
Conf_AllowedChannelTypes[len - 1] = *p;
Conf_AllowedChannelTypes[len] = '\0';
} else {
Config_Error(LOG_WARNING,
"%s, line %d: Unknown channel prefix \"%c\" in \"AllowedChannelTypes\"!",
File, Line, *p);
}
p++;
}
return;
}
if (strcasecmp(Var, "AllowRemoteOper") == 0) {
Conf_AllowRemoteOper = Check_ArgIsTrue(Arg);
return;
}
if (strcasecmp(Var, "ChrootDir") == 0) {
len = strlcpy(Conf_Chroot, Arg, sizeof(Conf_Chroot));
if (len >= sizeof(Conf_Chroot))
Config_Error_TooLong(File, Line, Var);
return;
}
if (strcasecmp(Var, "CloakHost") == 0) {
len = strlcpy(Conf_CloakHost, Arg, sizeof(Conf_CloakHost));
if (len >= sizeof(Conf_CloakHost))
Config_Error_TooLong(File, Line, Var);
return;
}
if (strcasecmp(Var, "CloakHostModeX") == 0) {
len = strlcpy(Conf_CloakHostModeX, Arg, sizeof(Conf_CloakHostModeX));
if (len >= sizeof(Conf_CloakHostModeX))
Config_Error_TooLong(File, Line, Var);
return;
}
if (strcasecmp(Var, "CloakHostSalt") == 0) {
len = strlcpy(Conf_CloakHostSalt, Arg, sizeof(Conf_CloakHostSalt));
if (len >= sizeof(Conf_CloakHostSalt))
Config_Error_TooLong(File, Line, Var);
return;
}
if (strcasecmp(Var, "CloakUserToNick") == 0) {
Conf_CloakUserToNick = Check_ArgIsTrue(Arg);
return;
}
if (strcasecmp(Var, "ConnectIPv6") == 0) {
Conf_ConnectIPv6 = Check_ArgIsTrue(Arg);
WarnIPv6(File, Line);
return;
}
if (strcasecmp(Var, "ConnectIPv4") == 0) {
Conf_ConnectIPv4 = Check_ArgIsTrue(Arg);
return;
}
if (strcasecmp(Var, "DefaultUserModes") == 0) {
p = Arg;
Conf_DefaultUserModes[0] = '\0';
while (*p) {
if (strchr(Conf_DefaultUserModes, *p)) {
/* Mode is already included; ignore it */
p++;
continue;
}
if (strchr(USERMODES, *p)) {
len = strlen(Conf_DefaultUserModes) + 1;
assert(len < sizeof(Conf_DefaultUserModes));
Conf_DefaultUserModes[len - 1] = *p;
Conf_DefaultUserModes[len] = '\0';
} else {
Config_Error(LOG_WARNING,
"%s, line %d: Unknown user mode \"%c\" in \"DefaultUserModes\"!",
File, Line, *p);
}
p++;
}
return;
}
if (strcasecmp(Var, "DNS") == 0) {
Conf_DNS = Check_ArgIsTrue(Arg);
return;
}
if (strcasecmp(Var, "Ident") == 0) {
Conf_Ident = Check_ArgIsTrue(Arg);
WarnIdent(File, Line);
return;
}
if (strcasecmp(Var, "IncludeDir") == 0) {
if (Conf_IncludeDir[0]) {
Config_Error(LOG_ERR,
"%s, line %d: Can't overwrite value of \"IncludeDir\" variable!",
File, Line);
return;
}
len = strlcpy(Conf_IncludeDir, Arg, sizeof(Conf_IncludeDir));
if (len >= sizeof(Conf_IncludeDir))
Config_Error_TooLong(File, Line, Var);
return;
}
if (strcasecmp(Var, "MorePrivacy") == 0) {
Conf_MorePrivacy = Check_ArgIsTrue(Arg);
return;
}
if (strcasecmp(Var, "NoticeBeforeRegistration") == 0) {
Conf_NoticeBeforeRegistration = Check_ArgIsTrue(Arg);
return;
}
if (strcasecmp(Var, "OperCanUseMode") == 0) {
Conf_OperCanMode = Check_ArgIsTrue(Arg);
return;
}
if (strcasecmp(Var, "OperChanPAutoOp") == 0) {
Conf_OperChanPAutoOp = Check_ArgIsTrue(Arg);
return;
}
if (strcasecmp(Var, "OperServerMode") == 0) {
Conf_OperServerMode = Check_ArgIsTrue(Arg);
return;
}
if (strcasecmp(Var, "PAM") == 0) {
Conf_PAM = Check_ArgIsTrue(Arg);
WarnPAM(File, Line);
return;
}
if (strcasecmp(Var, "PAMIsOptional") == 0 ) {
Conf_PAMIsOptional = Check_ArgIsTrue(Arg);
return;
}
if (strcasecmp(Var, "PAMServiceName") == 0) {
len = strlcpy(Conf_PAMServiceName, Arg, sizeof(Conf_PAMServiceName));
if (len >= sizeof(Conf_PAMServiceName))
Config_Error_TooLong(File, Line, Var);
return;
}
#ifndef STRICT_RFC
if (strcasecmp(Var, "RequireAuthPing") == 0) {
Conf_AuthPing = Check_ArgIsTrue(Arg);
return;
}
#endif
if (strcasecmp(Var, "ScrubCTCP") == 0) {
Conf_ScrubCTCP = Check_ArgIsTrue(Arg);
return;
}
#ifdef SYSLOG
if (strcasecmp(Var, "SyslogFacility") == 0) {
Conf_SyslogFacility = ngt_SyslogFacilityID(Arg,
Conf_SyslogFacility);
return;
}
#endif
if (strcasecmp(Var, "WebircPassword") == 0) {
len = strlcpy(Conf_WebircPwd, Arg, sizeof(Conf_WebircPwd));
if (len >= sizeof(Conf_WebircPwd))
Config_Error_TooLong(File, Line, Var);
return;
}
Config_Error_Section(File, Line, Var, "Options");
}
#ifdef SSL_SUPPORT
/**
* Handle variable in [SSL] configuration section.
*
* @param Line Line numer in configuration file.
* @param Var Variable name.
* @param Arg Variable argument.
*/
static void
Handle_SSL(const char *File, int Line, char *Var, char *Arg)
{
assert(File != NULL);
assert(Line > 0);
assert(Var != NULL);
assert(Arg != NULL);
if (strcasecmp(Var, "CertFile") == 0) {
assert(Conf_SSLOptions.CertFile == NULL);
Conf_SSLOptions.CertFile = strdup_warn(Arg);
return;
}
if (strcasecmp(Var, "DHFile") == 0) {
assert(Conf_SSLOptions.DHFile == NULL);
Conf_SSLOptions.DHFile = strdup_warn(Arg);
return;
}
if (strcasecmp(Var, "KeyFile") == 0) {
assert(Conf_SSLOptions.KeyFile == NULL);
Conf_SSLOptions.KeyFile = strdup_warn(Arg);
return;
}
if (strcasecmp(Var, "KeyFilePassword") == 0) {
assert(array_bytes(&Conf_SSLOptions.KeyFilePassword) == 0);
if (!array_copys(&Conf_SSLOptions.KeyFilePassword, Arg))
Config_Error(LOG_ERR,
"%s, line %d (section \"SSL\"): Could not copy %s: %s!",
File, Line, Var, strerror(errno));
return;
}
if (strcasecmp(Var, "Ports") == 0) {
ports_parse(&Conf_SSLOptions.ListenPorts, File, Line, Arg);
return;
}
if (strcasecmp(Var, "CipherList") == 0) {
assert(Conf_SSLOptions.CipherList == NULL);
Conf_SSLOptions.CipherList = strdup_warn(Arg);
return;
}
Config_Error_Section(File, Line, Var, "SSL");
}
#endif
/**
* Handle variable in [Operator] configuration section.
*
* @param Line Line numer in configuration file.
* @param Var Variable name.
* @param Arg Variable argument.
*/
static void
Handle_OPERATOR(const char *File, int Line, char *Var, char *Arg )
{
size_t len;
struct Conf_Oper *op;
assert( File != NULL );
assert( Line > 0 );
assert( Var != NULL );
assert( Arg != NULL );
op = array_get(&Conf_Opers, sizeof(*op),
array_length(&Conf_Opers, sizeof(*op)) - 1);
if (!op)
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(File, 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(File, Line, Var);
return;
}
if (strcasecmp(Var, "Mask") == 0) {
if (op->mask)
return; /* Hostname already configured */
op->mask = strdup_warn( Arg );
return;
}
Config_Error_Section(File, Line, Var, "Operator");
}
/**
* Handle variable in [Server] configuration section.
*
* @param Line Line numer in configuration file.
* @param Var Variable name.
* @param Arg Variable argument.
*/
static void
Handle_SERVER(const char *File, int Line, char *Var, char *Arg )
{
long port;
size_t len;
assert( File != NULL );
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(File, 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(File, 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\"",
File, 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 ':'!",
File, Line);
}
len = strlcpy( New_Server.pwd_in, Arg, sizeof( New_Server.pwd_in ));
if (len >= sizeof( New_Server.pwd_in ))
Config_Error_TooLong(File, 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(File, 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!",
File, 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 */
New_Server.group = atoi( Arg );
if (!New_Server.group && strcmp(Arg, "0"))
Config_Error_NaN(File, Line, Var);
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(File, Line, Var);
return;
}
Config_Error_Section(File, Line, Var, "Server");
}
/**
* Copy channel name into channel structure.
*
* If the channel name is not valid because of a missing prefix ('#', '&'),
* a default prefix of '#' will be added.
*
* @param new_chan New already allocated channel structure.
* @param name Name of the new channel.
* @returns true on success, false otherwise.
*/
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);
}
/**
* Handle variable in [Channel] configuration section.
*
* @param Line Line numer in configuration file.
* @param Var Variable name.
* @param Arg Variable argument.
*/
static void
Handle_CHANNEL(const char *File, int Line, char *Var, char *Arg)
{
size_t len;
struct Conf_Channel *chan;
assert( File != NULL );
assert( Line > 0 );
assert( Var != NULL );
assert( Arg != NULL );
chan = array_get(&Conf_Channels, sizeof(*chan),
array_length(&Conf_Channels, sizeof(*chan)) - 1);
if (!chan)
return;
if (strcasecmp(Var, "Name") == 0) {
if (!Handle_Channelname(chan, Arg))
Config_Error_TooLong(File, Line, Var);
return;
}
if (strcasecmp(Var, "Modes") == 0) {
/* Initial modes */
if(chan->modes_num >= sizeof(chan->modes)) {
Config_Error(LOG_ERR, "Too many Modes, option ignored.");
return;
}
chan->modes[chan->modes_num++] = strndup(Arg, COMMAND_LEN);
if(strlen(Arg) >= COMMAND_LEN)
Config_Error_TooLong(File, 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(File, 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(File, Line, Var);
Config_Error(LOG_WARNING,
"%s, line %d (section \"Channel\"): \"%s\" is deprecated here, use \"Modes = +k <key>\"!",
File, Line, Var);
return;
}
if( strcasecmp( Var, "MaxUsers" ) == 0 ) {
/* maximum user limit, mode l */
chan->maxusers = (unsigned long) atol(Arg);
if (!chan->maxusers && strcmp(Arg, "0"))
Config_Error_NaN(File, Line, Var);
Config_Error(LOG_WARNING,
"%s, line %d (section \"Channel\"): \"%s\" is deprecated here, use \"Modes = +l <limit>\"!",
File, 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(File, Line, Var);
return;
}
Config_Error_Section(File, Line, Var, "Channel");
}
/**
* Validate server configuration.
*
* Please note that this function uses exit(1) on fatal errors and therefore
* can result in ngIRCd terminating!
*
* @param Configtest true if the daemon has been called with "--configtest".
* @param Rehash true if re-reading configuration on runtime.
* @returns true if configuration is valid.
*/
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;
/* Emit a warning when the config file is not a full path name */
if (NGIRCd_ConfFile[0] && NGIRCd_ConfFile[0] != '/') {
Config_Error(LOG_WARNING,
"Not specifying a full path name to \"%s\" can cause problems when rehashing the server!",
NGIRCd_ConfFile);
}
/* 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] || !strchr(Conf_ServerName, '.'))
{
/* 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);
}
}
#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_PAM && Conf_ServerPwd[0])
Config_Error(LOG_ERR,
"This server uses PAM, \"Password\" in [Global] section will be ignored!");
#endif
if (Conf_MaxPenaltyTime != -1)
Config_Error(LOG_WARNING,
"Maximum penalty increase ('MaxPenaltyTime') is set to %ld, this is not recommended!",
Conf_MaxPenaltyTime);
#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=%ld, Servers=%d[%d], Channels=%ld",
array_length(&Conf_Opers, sizeof(struct Conf_Oper)),
servers, servers_once,
array_length(&Conf_Channels, sizeof(struct Conf_Channel)));
#endif
return config_valid;
}
/**
* Output "line too long" warning.
*
* @param Line Line number in configuration file.
* @param Item Affected variable name.
*/
static void
Config_Error_TooLong(const char *File, const int Line, const char *Item)
{
Config_Error(LOG_WARNING, "%s, line %d: Value of \"%s\" too long!",
File, Line, Item );
}
/**
* Output "unknown variable" warning.
*
* @param Line Line number in configuration file.
* @param Item Affected variable name.
* @param Section Section name.
*/
static void
Config_Error_Section(const char *File, const int Line, const char *Item,
const char *Section)
{
Config_Error(LOG_ERR, "%s, line %d (section \"%s\"): Unknown variable \"%s\"!",
File, Line, Section, Item);
}
/**
* Output "not a number" warning.
*
* @param Line Line number in configuration file.
* @param Item Affected variable name.
*/
static void
Config_Error_NaN(const char *File, const int Line, const char *Item )
{
Config_Error(LOG_WARNING, "%s, line %d: Value of \"%s\" is not a number!",
File, Line, Item );
}
/**
* Output configuration error to console and/or logfile.
*
* On runtime, the normal log functions of the daemon are used. But when
* testing the configuration ("--configtest"), all messages go directly
* to the console.
*
* @param Level Severity level of the message.
* @param Format Format string; see printf() function.
*/
#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
{
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 );
if (!Use_Log) {
if (Level <= LOG_WARNING)
printf(" - %s\n", msg);
else
puts(msg);
} else
Log(Level, "%s", msg);
}
#ifdef DEBUG
/**
* Dump internal state of the "configuration module".
*/
GLOBAL void
Conf_DebugDump(void)
{
int i;
Log(LOG_DEBUG, "Configured servers:");
for (i = 0; i < MAX_SERVERS; i++) {
if (! Conf_Server[i].name[0])
continue;
Log(LOG_DEBUG,
" - %s: %s:%d, last=%ld, group=%d, flags=%d, conn=%d",
Conf_Server[i].name, Conf_Server[i].host,
Conf_Server[i].port, Conf_Server[i].lasttry,
Conf_Server[i].group, Conf_Server[i].flags,
Conf_Server[i].conn_id);
}
}
#endif
/**
* Initialize server configuration structure to default values.
*
* @param Server Pointer to server structure to initialize.
*/
static void
Init_Server_Struct( CONF_SERVER *Server )
{
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));
}
/* -eof- */
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