]> arthur.barton.de Git - ngircd-alex.git/blobdiff - src/ngircd/conf.c
ngIRCd Release 27
[ngircd-alex.git] / src / ngircd / conf.c
index 1c5ba624d5dd93e732b511d204dca4e8f6196244..e4cd8963f3072e4bbcee1c6e062fe660c1fe49e9 100644 (file)
@@ -1,6 +1,6 @@
 /*
  * ngIRCd -- The Next Generation IRC Daemon
- * Copyright (c)2001-2019 Alexander Barton (alex@barton.de) and Contributors.
+ * Copyright (c)2001-2024 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
 #include <grp.h>
 #include <sys/types.h>
 #include <dirent.h>
+#include <netdb.h>
+
+#ifdef HAVE_SYS_RESOURCE_H
+#      include <sys/resource.h>
+#endif
 
 #include "ngircd.h"
 #include "conn.h"
@@ -112,6 +117,12 @@ ConfSSL_Init(void)
        free(Conf_SSLOptions.CertFile);
        Conf_SSLOptions.CertFile = NULL;
 
+       free(Conf_SSLOptions.CAFile);
+       Conf_SSLOptions.CAFile = NULL;
+
+       free(Conf_SSLOptions.CRLFile);
+       Conf_SSLOptions.CRLFile = NULL;
+
        free(Conf_SSLOptions.DHFile);
        Conf_SSLOptions.DHFile = NULL;
        array_free_wipe(&Conf_SSLOptions.KeyFilePassword);
@@ -388,7 +399,7 @@ Conf_Test( void )
        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", Conf_MaxPenaltyTime);
+       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);
@@ -408,7 +419,7 @@ Conf_Test( void )
 #endif
        printf("  DefaultUserModes = %s\n", Conf_DefaultUserModes);
        printf("  DNS = %s\n", yesno_to_str(Conf_DNS));
-#ifdef IDENT
+#ifdef IDENTAUTH
        printf("  Ident = %s\n", yesno_to_str(Conf_Ident));
 #endif
        printf("  IncludeDir = %s\n", Conf_IncludeDir);
@@ -435,10 +446,14 @@ Conf_Test( void )
 
 #ifdef SSL_SUPPORT
        puts("[SSL]");
+       printf("  CAFile = %s\n", Conf_SSLOptions.CAFile
+                                       ? Conf_SSLOptions.CAFile : "");
        printf("  CertFile = %s\n", Conf_SSLOptions.CertFile
                                        ? Conf_SSLOptions.CertFile : "");
        printf("  CipherList = %s\n", Conf_SSLOptions.CipherList ?
               Conf_SSLOptions.CipherList : DEFAULT_CIPHERS);
+       printf("  CRLFile = %s\n", Conf_SSLOptions.CRLFile
+                                       ? Conf_SSLOptions.CRLFile : "");
        printf("  DHFile = %s\n", Conf_SSLOptions.DHFile
                                        ? Conf_SSLOptions.DHFile : "");
        printf("  KeyFile = %s\n", Conf_SSLOptions.KeyFile
@@ -464,13 +479,16 @@ Conf_Test( void )
                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");
+               printf("  SSLConnect = %s\n",
+                      yesno_to_str(Conf_Server[i].SSLConnect));
+               printf("  SSLVerify = %s\n",
+                      yesno_to_str(Conf_Server[i].SSLVerify));
 #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");
+               printf( "  Passive = %s\n\n", yesno_to_str(Conf_Server[i].flags & CONF_SFLAG_DISABLED));
        }
 
        predef_channel_count = array_length(&Conf_Channels, sizeof(*predef_chan));
@@ -488,6 +506,7 @@ Conf_Test( void )
                printf("  Key = %s\n", predef_chan->key);
                printf("  MaxUsers = %lu\n", predef_chan->maxusers);
                printf("  Topic = %s\n", predef_chan->topic);
+               printf("  Autojoin = %s\n", yesno_to_str(predef_chan->autojoin));
                printf("  KeyFile = %s\n\n", predef_chan->keyfile);
        }
 
@@ -901,29 +920,46 @@ Read_Config(bool TestOnly, bool IsStarting)
        struct dirent *entry;
        int i, n;
        FILE *fd;
-       DIR *dh;
+       DIR *dh = NULL;
+
+       if (!NGIRCd_ConfFile[0]) {
+               /* No configuration file name explicitly given on the command
+                * line, use defaults but ignore errors when this file can't be
+                * read later on. */
+               strlcpy(file, SYSCONFDIR, sizeof(file));
+               strlcat(file, CONFIG_FILE, sizeof(file));
+               ptr = file;
+       } else
+               ptr = NGIRCd_ConfFile;
 
-       Config_Error(LOG_INFO, "Using configuration file \"%s\" ...", NGIRCd_ConfFile);
+       Config_Error(LOG_INFO, "Using %s configuration file \"%s\" ...",
+                    !NGIRCd_ConfFile[0] ? "default" : "specified", ptr);
 
        /* 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 );
+       fd = fopen(ptr, "r");
+       if (!fd) {
+               if (NGIRCd_ConfFile[0]) {
+                       Config_Error(LOG_ALERT,
+                                    "Can't read specified configuration file \"%s\": %s",
+                                    ptr, strerror(errno));
+                       if (IsStarting) {
+                               Config_Error(LOG_ALERT,
+                                            "%s exiting due to fatal errors!",
+                                            PACKAGE_NAME);
+                               exit(1);
+                       }
+               }
+               Config_Error(LOG_WARNING,
+                            "Can't read default configuration file \"%s\": %s - Ignored.",
+                            ptr, strerror(errno));
        }
 
        opers_free();
        Set_Defaults(IsStarting);
 
-       if (TestOnly)
+       if (TestOnly && fd)
                Config_Error(LOG_INFO,
-                            "Reading configuration from \"%s\" ...",
-                            NGIRCd_ConfFile );
+                            "Reading configuration from \"%s\" ...", ptr);
 
        /* Clean up server configuration structure: mark all already
         * configured servers as "once" so that they are deleted
@@ -942,16 +978,13 @@ Read_Config(bool TestOnly, bool IsStarting)
 
                                        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
+                                               LogDebug("Deleted unused duplicate server %d (kept %d).", n, i);
                                        }
                                }
                        } else {
                                /* Mark server as "once" */
                                Conf_Server[i].flags |= CONF_SFLAG_ONCE;
-                               Log( LOG_DEBUG, "Marked server %d as \"once\"", i );
+                               LogDebug("Marked server %d as \"once\"", i);
                        }
                }
        }
@@ -963,16 +996,23 @@ Read_Config(bool TestOnly, bool IsStarting)
        ConfSSL_Init();
 #endif
 
-       Read_Config_File(NGIRCd_ConfFile, fd);
-       fclose(fd);
+       if (fd) {
+               Read_Config_File(ptr, fd);
+               fclose(fd);
+       }
 
        if (Conf_IncludeDir[0]) {
+               /* Include directory was set in the main configuration file. So
+                * use it and show errors. */
                dh = opendir(Conf_IncludeDir);
                if (!dh)
                        Config_Error(LOG_ALERT,
                                     "Can't open include directory \"%s\": %s",
                                     Conf_IncludeDir, strerror(errno));
-       } else {
+       } else if (!NGIRCd_ConfFile[0]) {
+               /* No include dir set in the configuration file used (if any)
+                * but no config file explicitly specified either: so use the
+                * default include path here as well! */
                strlcpy(Conf_IncludeDir, SYSCONFDIR, sizeof(Conf_IncludeDir));
                strlcat(Conf_IncludeDir, CONFIG_DIR, sizeof(Conf_IncludeDir));
                dh = opendir(Conf_IncludeDir);
@@ -1294,7 +1334,7 @@ WarnPAM(const char UNUSED *File, int UNUSED Line)
 /**
  * Handle variable in [Global] configuration section.
  *
- * @param Line Line numer in configuration file.
+ * @param Line Line number in configuration file.
  * @param Var  Variable name.
  * @param Arg  Variable argument.
  */
@@ -1449,7 +1489,7 @@ Handle_GLOBAL(const char *File, int Line, char *Var, char *Arg )
 /**
  * Handle variable in [Limits] configuration section.
  *
- * @param Line Line numer in configuration file.
+ * @param Line Line number in configuration file.
  * @param Var  Variable name.
  * @param Arg  Variable argument.
  */
@@ -1538,7 +1578,7 @@ Handle_LIMITS(const char *File, int Line, char *Var, char *Arg)
 /**
  * Handle variable in [Options] configuration section.
  *
- * @param Line Line numer in configuration file.
+ * @param Line Line number in configuration file.
  * @param Var  Variable name.
  * @param Arg  Variable argument.
  */
@@ -1730,7 +1770,7 @@ Handle_OPTIONS(const char *File, int Line, char *Var, char *Arg)
 /**
  * Handle variable in [SSL] configuration section.
  *
- * @param Line Line numer in configuration file.
+ * @param Line Line number in configuration file.
  * @param Var  Variable name.
  * @param Arg  Variable argument.
  */
@@ -1774,6 +1814,16 @@ Handle_SSL(const char *File, int Line, char *Var, char *Arg)
                Conf_SSLOptions.CipherList = strdup_warn(Arg);
                return;
        }
+       if (strcasecmp(Var, "CAFile") == 0) {
+               assert(Conf_SSLOptions.CAFile == NULL);
+               Conf_SSLOptions.CAFile = strdup_warn(Arg);
+               return;
+       }
+       if (strcasecmp(Var, "CRLFile") == 0) {
+               assert(Conf_SSLOptions.CRLFile == NULL);
+               Conf_SSLOptions.CRLFile = strdup_warn(Arg);
+               return;
+       }
 
        Config_Error_Section(File, Line, Var, "SSL");
 }
@@ -1783,7 +1833,7 @@ Handle_SSL(const char *File, int Line, char *Var, char *Arg)
 /**
  * Handle variable in [Operator] configuration section.
  *
- * @param Line Line numer in configuration file.
+ * @param Line Line number in configuration file.
  * @param Var  Variable name.
  * @param Arg  Variable argument.
  */
@@ -1830,7 +1880,7 @@ Handle_OPERATOR(const char *File, int Line, char *Var, char *Arg )
 /**
  * Handle variable in [Server] configuration section.
  *
- * @param Line Line numer in configuration file.
+ * @param Line Line number in configuration file.
  * @param Var  Variable name.
  * @param Arg  Variable argument.
  */
@@ -1904,7 +1954,11 @@ Handle_SERVER(const char *File, int Line, char *Var, char *Arg )
        if( strcasecmp( Var, "SSLConnect" ) == 0 ) {
                New_Server.SSLConnect = Check_ArgIsTrue(Arg);
                return;
-        }
+       }
+       if (strcasecmp(Var, "SSLVerify") == 0) {
+               New_Server.SSLVerify = Check_ArgIsTrue(Arg);
+               return;
+       }
 #endif
        if( strcasecmp( Var, "Group" ) == 0 ) {
                /* Server group */
@@ -1960,7 +2014,7 @@ Handle_Channelname(struct Conf_Channel *new_chan, const char *name)
 /**
  * Handle variable in [Channel] configuration section.
  *
- * @param Line Line numer in configuration file.
+ * @param Line Line number in configuration file.
  * @param Var  Variable name.
  * @param Arg  Variable argument.
  */
@@ -2003,6 +2057,11 @@ Handle_CHANNEL(const char *File, int Line, char *Var, char *Arg)
                        Config_Error_TooLong(File, Line, Var);
                return;
        }
+       if( strcasecmp( Var, "Autojoin" ) == 0 ) {
+               /* Check autojoin */
+               chan->autojoin = Check_ArgIsTrue(Arg);
+               return;
+       }
        if( strcasecmp( Var, "Key" ) == 0 ) {
                /* Initial Channel Key (mode k) */
                len = strlcpy(chan->key, Arg, sizeof(chan->key));
@@ -2049,11 +2108,14 @@ Validate_Config(bool Configtest, bool Rehash)
 {
        /* Validate configuration settings. */
 
-#ifdef DEBUG
        int i, servers, servers_once;
-#endif
+       struct hostent *h;
        bool config_valid = true;
        char *ptr;
+#ifdef HAVE_SETRLIMIT
+       struct rlimit rlim;
+       long fd_lim_old;
+#endif
 
        /* Emit a warning when the config file is not a full path name */
        if (NGIRCd_ConfFile[0] && NGIRCd_ConfFile[0] != '/') {
@@ -2062,6 +2124,28 @@ Validate_Config(bool Configtest, bool Rehash)
                        NGIRCd_ConfFile);
        }
 
+       if (!Conf_ServerName[0]) {
+               /* No server name configured, try to get a sane name from the
+                * host name. Note: the IRC server name MUST contain
+                * at least one dot, so the "node name" is not sufficient! */
+               gethostname(Conf_ServerName, sizeof(Conf_ServerName));
+               if (Conf_DNS) {
+                       /* Try to get a proper host name ... */
+                       h = gethostbyname(Conf_ServerName);
+                       if (h)
+                               strlcpy(Conf_ServerName, h->h_name,
+                                       sizeof(Conf_ServerName));
+               }
+               if (!strchr(Conf_ServerName, '.')) {
+                       /* (Still) No dot in the name! */
+                       strlcat(Conf_ServerName, ".host",
+                               sizeof(Conf_ServerName));
+               }
+               Config_Error(LOG_WARNING,
+                            "No server name configured, using host name \"%s\".",
+                            Conf_ServerName);
+       }
+
        /* Validate configured server name, see RFC 2812 section 2.3.1 */
        ptr = Conf_ServerName;
        do {
@@ -2076,13 +2160,10 @@ Validate_Config(bool Configtest, bool Rehash)
                break;
        } while (*(++ptr));
 
-       if (!Conf_ServerName[0] || !strchr(Conf_ServerName, '.'))
-       {
-               /* No server name configured! */
+       if (!Conf_ServerName[0] || !strchr(Conf_ServerName, '.')) {
                config_valid = false;
                Config_Error(LOG_ALERT,
-                            "No (valid) server name configured in \"%s\" (section 'Global': 'Name')!",
-                            NGIRCd_ConfFile);
+                            "No (valid) server name configured (section 'Global': 'Name')!");
                if (!Configtest && !Rehash) {
                        Config_Error(LOG_ALERT,
                                     "%s exiting due to fatal errors!",
@@ -2096,8 +2177,7 @@ Validate_Config(bool Configtest, bool Rehash)
                /* No administrative contact configured! */
                config_valid = false;
                Config_Error(LOG_ALERT,
-                            "No administrator email address configured in \"%s\" ('AdminEMail')!",
-                            NGIRCd_ConfFile);
+                            "No administrator email address configured ('AdminEMail')!");
                if (!Configtest) {
                        Config_Error(LOG_ALERT,
                                     "%s exiting due to fatal errors!",
@@ -2125,7 +2205,48 @@ Validate_Config(bool Configtest, bool Rehash)
                             "Maximum penalty increase ('MaxPenaltyTime') is set to %ld, this is not recommended!",
                             Conf_MaxPenaltyTime);
 
-#ifdef DEBUG
+#ifdef HAVE_SETRLIMIT
+       if(getrlimit(RLIMIT_NOFILE, &rlim) == 0) {
+               LogDebug("Current file descriptor limit is %ld, maximum %ld. \"MaxConnections\" is %ld.",
+                        (long)rlim.rlim_cur, (long)rlim.rlim_max,
+                        Conf_MaxConnections);
+               fd_lim_old = rlim.rlim_cur;
+               /* Don't request "infinite" file descriptors, use a limit! */
+               if (rlim.rlim_max != RLIM_INFINITY && rlim.rlim_max < MAX_FD_LIMIT)
+                       rlim.rlim_cur = rlim.rlim_max;
+               else
+                       rlim.rlim_cur = MAX_FD_LIMIT;
+               if ((long)rlim.rlim_cur != fd_lim_old) {
+                       /* Try to adjust the current file descriptor limit: */
+                       LogDebug("Trying to upgrade \"soft\" file descriptor limit: %ld -> %ld ...",
+                                fd_lim_old, (long)rlim.rlim_cur);
+                       if(setrlimit(RLIMIT_NOFILE, &rlim) != 0)
+                               Config_Error(LOG_ERR, "Failed to adjust file descriptor limit from %ld to %ld: %s",
+                                            fd_lim_old, (long)rlim.rlim_cur,
+                                            strerror(errno));
+               }
+               /* Check the (updated?) file descriptor limit: */
+               getrlimit(RLIMIT_NOFILE, &rlim);
+               if (rlim.rlim_cur != RLIM_INFINITY
+                   && (long)rlim.rlim_cur <= (long)Conf_MaxConnections) {
+                       Config_Error(LOG_WARNING,
+                                    "Current file descriptor limit (%ld) is not higher than configured \"MaxConnections\" (%ld)!",
+                                    (long)rlim.rlim_cur, Conf_MaxConnections);
+               } else if (!Configtest) {
+                       if (Conf_MaxConnections > 0)
+                               Log(LOG_INFO,
+                                   "File descriptor limit is %ld; \"MaxConnections\" is set to %ld.",
+                                   (long)rlim.rlim_cur, Conf_MaxConnections);
+                       else
+                               Log(LOG_INFO,
+                                   "File descriptor limit is %ld; \"MaxConnections\" is not set.",
+                                   (long)rlim.rlim_cur);
+               }
+       } else
+               Config_Error(LOG_ERR, "Failed to get file descriptor limit: %s",
+                            strerror(errno));
+#endif
+
        servers = servers_once = 0;
        for (i = 0; i < MAX_SERVERS; i++) {
                if (Conf_Server[i].name[0]) {
@@ -2134,12 +2255,10 @@ Validate_Config(bool Configtest, bool Rehash)
                                servers_once++;
                }
        }
-       Log(LOG_DEBUG,
-           "Configuration: Operators=%ld, Servers=%d[%d], Channels=%ld",
+       LogDebug("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;
 }
@@ -2226,7 +2345,6 @@ va_dcl
                Log(Level, "%s", msg);
 }
 
-#ifdef DEBUG
 
 /**
  * Dump internal state of the "configuration module".
@@ -2236,11 +2354,11 @@ Conf_DebugDump(void)
 {
        int i;
 
-       Log(LOG_DEBUG, "Configured servers:");
+       LogDebug("Configured servers:");
        for (i = 0; i < MAX_SERVERS; i++) {
                if (! Conf_Server[i].name[0])
                        continue;
-               Log(LOG_DEBUG,
+               LogDebug(
                    " - %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,
@@ -2249,7 +2367,6 @@ Conf_DebugDump(void)
        }
 }
 
-#endif
 
 /**
  * Initialize server configuration structure to default values.
@@ -2271,6 +2388,11 @@ Init_Server_Struct( CONF_SERVER *Server )
        Proc_InitStruct(&Server->res_stat);
        Server->conn_id = NONE;
        memset(&Server->bind_addr, 0, sizeof(Server->bind_addr));
+
+#ifdef SSL_SUPPORT
+       /* Verify SSL connections by default! */
+       Server->SSLVerify = true;
+#endif
 }
 
 /* -eof- */