Add abstraction layer for storage

1 files changed, 308 insertions, 0 deletions

diff --git a/storage_text.c b/storage_text.c
new file mode 100644
index 00000000..7c8b794c
--- /dev/null
+++ b/storage_text.c
@@ -0,0 +1,308 @@
+  /********************************************************************\
+  * BitlBee -- An IRC to other IM-networks gateway                     *
+  *                                                                    *
+  * Copyright 2002-2004 Wilmer van der Gaast and others                *
+  \********************************************************************/
+
+/* Storage backend that uses the same file format as <=1.0 */
+
+/*
+  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.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License with
+  the Debian GNU/Linux distribution in /usr/share/common-licenses/GPL;
+  if not, write to the Free Software Foundation, Inc., 59 Temple Place,
+  Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#define BITLBEE_CORE
+#include "bitlbee.h"
+#include "crypting.h"
+
+static void text_init (void)
+{
+	if( access( global.conf->configdir, F_OK ) != 0 )
+		log_message( LOGLVL_WARNING, "The configuration directory %s does not exist. Configuration won't be saved.", CONFIG );
+	else if( access( global.conf->configdir, R_OK ) != 0 || access( global.conf->configdir, W_OK ) != 0 )
+		log_message( LOGLVL_WARNING, "Permission problem: Can't read/write from/to %s.", global.conf->configdir );
+}
+
+static int text_load ( const char *my_nick, const char* password, irc_t *irc )
+{
+	char s[512];
+	char *line;
+	int proto;
+	char nick[MAX_NICK_LENGTH+1];
+	FILE *fp;
+	user_t *ru = user_find( irc, ROOT_NICK );
+	
+	if( irc->status == USTATUS_IDENTIFIED )
+		return( 1 );
+	
+	g_snprintf( s, 511, "%s%s%s", global.conf->configdir, my_nick, ".accounts" );
+   	fp = fopen( s, "r" );
+   	if( !fp ) return( 0 );
+	
+	fscanf( fp, "%32[^\n]s", s );
+	if( setpass( irc, password, s ) < 0 )
+	{
+		fclose( fp );
+		return( -1 );
+	}
+	
+	/* Do this now. If the user runs with AuthMode = Registered, the
+	   account command will not work otherwise. */
+	irc->status = USTATUS_IDENTIFIED;
+	
+	while( fscanf( fp, "%511[^\n]s", s ) > 0 )
+	{
+		fgetc( fp );
+		line = deobfucrypt( irc, s );
+		root_command_string( irc, ru, line, 0 );
+		g_free( line );
+	}
+	fclose( fp );
+	
+	g_snprintf( s, 511, "%s%s%s", global.conf->configdir, my_nick, ".nicks" );
+	fp = fopen( s, "r" );
+	if( !fp ) return( 0 );
+	while( fscanf( fp, "%s %d %s", s, &proto, nick ) > 0 )
+	{
+		http_decode( s );
+		nick_set( irc, s, proto, nick );
+	}
+	fclose( fp );
+	
+	if( set_getint( irc, "auto_connect" ) )
+	{
+		strcpy( s, "account on" );	/* Can't do this directly because r_c_s alters the string */
+		root_command_string( irc, ru, s, 0 );
+	}
+	
+	return( 1 );
+}
+
+static int text_save( irc_t *irc )
+{
+	char s[512];
+	char path[512], new_path[512];
+	char *line;
+	nick_t *n;
+	set_t *set;
+	mode_t ou = umask( 0077 );
+	account_t *a;
+	FILE *fp;
+	char *hash;
+	
+	/*\
+	 *  [SH] Nothing should be saved if no password is set, because the
+	 *  password is not set if it was wrong, or if one is not identified
+	 *  yet. This means that a malicious user could easily overwrite
+	 *  files owned by someone else:
+	 *  a Bad Thing, methinks
+	\*/
+
+	/* [WVG] No? Really? */
+
+	/*\
+	 *  [SH] Okay, okay, it wasn't really Wilmer who said that, it was
+	 *  me. I just thought it was funny.
+	\*/
+	
+	hash = hashpass( irc );
+	if( hash == NULL )
+	{
+		irc_usermsg( irc, "Please register yourself if you want to save your settings." );
+		return( 0 );
+	}
+	
+	g_snprintf( path, 511, "%s%s%s", global.conf->configdir, irc->nick, ".nicks~" );
+	fp = fopen( path, "w" );
+	if( !fp ) return( 0 );
+	for( n = irc->nicks; n; n = n->next )
+	{
+		strcpy( s, n->handle );
+		s[169] = 0; /* Prevent any overflow (169 ~ 512 / 3) */
+		http_encode( s );
+		g_snprintf( s + strlen( s ), 510 - strlen( s ), " %d %s", n->proto, n->nick );
+		if( fprintf( fp, "%s\n", s ) != strlen( s ) + 1 )
+		{
+			irc_usermsg( irc, "fprintf() wrote too little. Disk full?" );
+			fclose( fp );
+			return( 0 );
+		}
+	}
+	if( fclose( fp ) != 0 )
+	{
+		irc_usermsg( irc, "fclose() reported an error. Disk full?" );
+		return( 0 );
+	}
+  
+	g_snprintf( new_path, 512, "%s%s%s", global.conf->configdir, irc->nick, ".nicks" );
+	if( unlink( new_path ) != 0 )
+	{
+		if( errno != ENOENT )
+		{
+			irc_usermsg( irc, "Error while removing old .nicks file" );
+			return( 0 );
+		}
+	}
+	if( rename( path, new_path ) != 0 )
+	{
+		irc_usermsg( irc, "Error while renaming new .nicks file" );
+		return( 0 );
+	}
+	
+	g_snprintf( path, 511, "%s%s%s", global.conf->configdir, irc->nick, ".accounts~" );
+	fp = fopen( path, "w" );
+	if( !fp ) return( 0 );
+	if( fprintf( fp, "%s", hash ) != strlen( hash ) )
+	{
+		irc_usermsg( irc, "fprintf() wrote too little. Disk full?" );
+		fclose( fp );
+		return( 0 );
+	}
+	g_free( hash );
+
+	for( a = irc->accounts; a; a = a->next )
+	{
+		if( a->protocol == PROTO_OSCAR || a->protocol == PROTO_ICQ || a->protocol == PROTO_TOC )
+			g_snprintf( s, sizeof( s ), "account add oscar \"%s\" \"%s\" %s", a->user, a->pass, a->server );
+		else
+			g_snprintf( s, sizeof( s ), "account add %s \"%s\" \"%s\" \"%s\"",
+			            proto_name[a->protocol], a->user, a->pass, a->server ? a->server : "" );
+		
+		line = obfucrypt( irc, s );
+		if( *line )
+		{
+			if( fprintf( fp, "%s\n", line ) != strlen( line ) + 1 )
+			{
+				irc_usermsg( irc, "fprintf() wrote too little. Disk full?" );
+				fclose( fp );
+				return( 0 );
+			}
+		}
+		g_free( line );
+	}
+	
+	for( set = irc->set; set; set = set->next )
+	{
+		if( set->value && set->def )
+		{
+			g_snprintf( s, sizeof( s ), "set %s \"%s\"", set->key, set->value );
+			line = obfucrypt( irc, s );
+			if( *line )
+			{
+				if( fprintf( fp, "%s\n", line ) != strlen( line ) + 1 )
+				{
+					irc_usermsg( irc, "fprintf() wrote too little. Disk full?" );
+					fclose( fp );
+					return( 0 );
+				}
+			}
+			g_free( line );
+		}
+	}
+	
+	if( strcmp( irc->mynick, ROOT_NICK ) != 0 )
+	{
+		g_snprintf( s, sizeof( s ), "rename %s %s", ROOT_NICK, irc->mynick );
+		line = obfucrypt( irc, s );
+		if( *line )
+		{
+			if( fprintf( fp, "%s\n", line ) != strlen( line ) + 1 )
+			{
+				irc_usermsg( irc, "fprintf() wrote too little. Disk full?" );
+				fclose( fp );
+				return( 0 );
+			}
+		}
+		g_free( line );
+	}
+	if( fclose( fp ) != 0 )
+	{
+		irc_usermsg( irc, "fclose() reported an error. Disk full?" );
+		return( 0 );
+	}
+	
+ 	g_snprintf( new_path, 512, "%s%s%s", global.conf->configdir, irc->nick, ".accounts" );
+ 	if( unlink( new_path ) != 0 )
+	{
+		if( errno != ENOENT )
+		{
+			irc_usermsg( irc, "Error while removing old .accounts file" );
+			return( 0 );
+		}
+	}
+	if( rename( path, new_path ) != 0 )
+	{
+		irc_usermsg( irc, "Error while renaming new .accounts file" );
+		return( 0 );
+	}
+	
+	umask( ou );
+	
+	return( 1 );
+}
+
+static int text_exists( const char *nick )
+{
+	char path[512];
+	int checkie;
+
+	g_snprintf( path, 511, "%s%s%s", global.conf->configdir, nick, ".accounts" );
+	checkie = access( path, F_OK );
+	
+	g_snprintf( path, 511, "%s%s%s", global.conf->configdir, nick, ".nicks" );
+	checkie += access( path, F_OK );
+	
+	return ( checkie != -2 );
+}
+
+static int text_remove( const char *nick )
+{
+	char s[512];
+
+	g_snprintf( s, 511, "%s%s%s", global.conf->configdir, nick, ".accounts" );
+	if (unlink( s ) == -1)
+		return( 1 );
+	
+	g_snprintf( s, 511, "%s%s%s", global.conf->configdir, nick, ".nicks" );
+	if (unlink( s ) == -1)
+		return( 1 );
+
+	return( 0 );
+}
+
+static int text_check_pass( const char *nick, const char *password )
+{
+	char s[512];
+	FILE *fp;
+	
+	g_snprintf( s, 511, "%s%s%s", global.conf->configdir, nick, ".nicks" );
+	fp = fopen( s, "r" );
+
+	fscanf( fp, "%32[^\n]s", s );
+	fclose( fp );
+
+	/* FIXME */
+	return( 0 );
+}
+
+storage_t storage_text = {
+	.name = "text",
+	.init = text_init,
+	.exists = text_exists,
+	.check_pass = text_check_pass,
+	.remove = text_remove,
+	.load = text_load,
+	.save = text_save
+};