diff options
Diffstat (limited to 'storage_xml.c')
| -rw-r--r-- | storage_xml.c | 381 |
1 files changed, 381 insertions, 0 deletions
diff --git a/storage_xml.c b/storage_xml.c new file mode 100644 index 00000000..5eda46cc --- /dev/null +++ b/storage_xml.c @@ -0,0 +1,381 @@ + /********************************************************************\ + * BitlBee -- An IRC to other IM-networks gateway * + * * + * Copyright 2002-2006 Wilmer van der Gaast and others * + \********************************************************************/ + +/* Storage backend that uses an XMLish format for all data. */ + +/* + 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" + +typedef enum +{ + XML_PASS_CHECK_ONLY = -1, + XML_PASS_UNKNOWN = 0, + XML_PASS_OK +} xml_pass_st; + +#define XML_PASS_ERRORMSG "Wrong username or password" + +struct xml_parsedata +{ + irc_t *irc; + char *current_setting; + account_t *current_account; + char *given_nick; + char *given_pass; + xml_pass_st pass_st; +}; + +static char *xml_attr( const gchar **attr_names, const gchar **attr_values, const gchar *key ) +{ + int i; + + for( i = 0; attr_names[i]; i ++ ) + if( g_strcasecmp( attr_names[i], key ) == 0 ) + return (char*) attr_values[i]; + + return NULL; +} + +static void xml_destroy_xd( gpointer data ) +{ + struct xml_parsedata *xd = data; + + g_free( xd->given_nick ); + g_free( xd->given_pass ); + g_free( xd ); +} + +static void xml_start_element( GMarkupParseContext *ctx, const gchar *element_name, const gchar **attr_names, const gchar **attr_values, gpointer data, GError **error ) +{ + struct xml_parsedata *xd = data; + irc_t *irc = xd->irc; + + if( g_strcasecmp( element_name, "user" ) == 0 ) + { + char *nick = xml_attr( attr_names, attr_values, "nick" ); + char *pass = xml_attr( attr_names, attr_values, "password" ); + + if( !nick || !pass ) + { + g_set_error( error, G_MARKUP_ERROR, G_MARKUP_ERROR_INVALID_CONTENT, + "Missing attributes for %s element", element_name ); + } + else if( strcmp( nick, xd->given_nick ) == 0 && + strcmp( pass, xd->given_pass ) == 0 ) + { + if( xd->pass_st != XML_PASS_CHECK_ONLY ) + xd->pass_st = XML_PASS_OK; + } + else + { + g_set_error( error, G_MARKUP_ERROR, G_MARKUP_ERROR_INVALID_CONTENT, + XML_PASS_ERRORMSG ); + } + } + else if( xd->pass_st < XML_PASS_OK ) + { + /* Let's not parse anything else if we only have to check + the password. */ + } + else if( g_strcasecmp( element_name, "account" ) == 0 ) + { + char *protocol, *handle, *server, *password; + struct prpl *prpl = NULL; + + handle = xml_attr( attr_names, attr_values, "handle" ); + password = xml_attr( attr_names, attr_values, "password" ); + server = xml_attr( attr_names, attr_values, "server" ); + + protocol = xml_attr( attr_names, attr_values, "protocol" ); + if( protocol ) + prpl = find_protocol( protocol ); + + if( !handle || !password ) + g_set_error( error, G_MARKUP_ERROR, G_MARKUP_ERROR_INVALID_CONTENT, + "Missing attributes for %s element", element_name ); + else if( !prpl ) + g_set_error( error, G_MARKUP_ERROR, G_MARKUP_ERROR_INVALID_CONTENT, + "Missing or unknown protocol %s element", element_name ); + else + { + xd->current_account = account_add( irc, prpl, handle, password ); + if( server ) + xd->current_account->server = g_strdup( server ); + } + } + else if( g_strcasecmp( element_name, "setting" ) == 0 ) + { + if( xd->current_account == NULL ) + { + char *setting; + + if( xd->current_setting ) + { + g_free( xd->current_setting ); + xd->current_setting = NULL; + } + + if( ( setting = xml_attr( attr_names, attr_values, "name" ) ) ) + xd->current_setting = g_strdup( setting ); + else + g_set_error( error, G_MARKUP_ERROR, G_MARKUP_ERROR_INVALID_CONTENT, + "Missing attributes for %s element", element_name ); + } + } + else if( g_strcasecmp( element_name, "buddy" ) == 0 ) + { + char *handle, *nick; + + handle = xml_attr( attr_names, attr_values, "handle" ); + nick = xml_attr( attr_names, attr_values, "nick" ); + + if( xd->current_account && handle && nick ) + { + nick_set( irc, handle, xd->current_account->prpl, nick ); + } + else + { + g_set_error( error, G_MARKUP_ERROR, G_MARKUP_ERROR_INVALID_CONTENT, + "Missing attributes for %s element", element_name ); + } + } + else + { + g_set_error( error, G_MARKUP_ERROR, G_MARKUP_ERROR_UNKNOWN_ELEMENT, + "Unkown element: %s", element_name ); + } +} + +static void xml_end_element( GMarkupParseContext *ctx, const gchar *element_name, gpointer data, GError **error ) +{ + struct xml_parsedata *xd = data; + // irc_t *irc = xd->irc; + + if( g_strcasecmp( element_name, "setting" ) == 0 && xd->current_setting ) + { + g_free( xd->current_setting ); + xd->current_setting = NULL; + } + else if( g_strcasecmp( element_name, "account" ) == 0 ) + { + xd->current_account = NULL; + } +} + +static void xml_text( GMarkupParseContext *ctx, const gchar *text, gsize text_len, gpointer data, GError **error ) +{ + struct xml_parsedata *xd = data; + irc_t *irc = xd->irc; + + if( xd->pass_st < XML_PASS_OK ) + { + /* Let's not parse anything else if we only have to check + the password. */ + } + else if( g_strcasecmp( g_markup_parse_context_get_element( ctx ), "setting" ) == 0 && + xd->current_setting && xd->current_account == NULL ) + { + set_setstr( irc, xd->current_setting, (char*) text ); + g_free( xd->current_setting ); + xd->current_setting = NULL; + } +} + +GMarkupParser xml_parser = +{ + xml_start_element, + xml_end_element, + xml_text, + NULL, + NULL +}; + +static void xml_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 storage_status_t xml_load( const char *my_nick, const char *password, irc_t *irc ) +{ + GMarkupParseContext *ctx; + struct xml_parsedata *xd; + char *fn, buf[512]; + GError *gerr = NULL; + int fd, st; + + if( irc->status & USTATUS_IDENTIFIED ) + return( 1 ); + + xd = g_new0( struct xml_parsedata, 1 ); + xd->irc = irc; + xd->given_nick = g_strdup( my_nick ); + xd->given_pass = g_strdup( password ); + nick_lc( xd->given_nick ); + + fn = g_strdup_printf( "%s%s%s", global.conf->configdir, xd->given_nick, ".xml" ); + if( ( fd = open( fn, O_RDONLY ) ) < 0 ) + { + xml_destroy_xd( xd ); + g_free( fn ); + return STORAGE_NO_SUCH_USER; + } + g_free( fn ); + + ctx = g_markup_parse_context_new( &xml_parser, 0, xd, xml_destroy_xd ); + + while( ( st = read( fd, buf, sizeof( buf ) ) ) > 0 ) + { + if( !g_markup_parse_context_parse( ctx, buf, st, &gerr ) || gerr ) + { + g_markup_parse_context_free( ctx ); + close( fd ); + + /* Slightly dirty... */ + if( gerr && strcmp( gerr->message, XML_PASS_ERRORMSG ) == 0 ) + return STORAGE_INVALID_PASSWORD; + else + { + if( gerr ) + irc_usermsg( irc, "Error from XML-parser: %s", gerr->message ); + + return STORAGE_OTHER_ERROR; + } + } + } + + g_markup_parse_context_free( ctx ); + close( fd ); + + irc->status |= USTATUS_IDENTIFIED; + + if( set_getint( irc, "auto_connect" ) ) + { + /* Can't do this directly because r_c_s alters the string */ + strcpy( buf, "account on" ); + root_command_string( irc, NULL, buf, 0 ); + } + + return STORAGE_OK; +} + +static int xml_printf( int fd, char *fmt, ... ) +{ + va_list params; + char *out; + int len; + + va_start( params, fmt ); + out = g_markup_vprintf_escaped( fmt, params ); + va_end( params ); + + len = strlen( out ); + len -= write( fd, out, len ); + g_free( out ); + + return len == 0; +} + +static storage_status_t xml_save( irc_t *irc, int overwrite ) +{ + char path[512], *path2; + set_t *set; + nick_t *nick; + account_t *acc; + int fd; + + g_snprintf( path, sizeof( path ) - 2, "%s%s%s", global.conf->configdir, irc->nick, ".xml" ); + + if( !overwrite && access( path, F_OK ) != -1 ) + return STORAGE_ALREADY_EXISTS; + + strcat( path, "~" ); + if( ( fd = open( path, O_WRONLY | O_CREAT, 0600 ) ) < 0 ) + { + irc_usermsg( irc, "Error while opening configuration file." ); + return STORAGE_OTHER_ERROR; + } + + if( !xml_printf( fd, "<user nick=\"%s\" password=\"%s\">\n", irc->nick, irc->password ) ) + goto write_error; + + for( set = irc->set; set; set = set->next ) + if( set->value && set->def ) + if( !xml_printf( fd, "\t<setting name=\"%s\">%s</setting>\n", set->key, set->value ) ) + goto write_error; + + for( acc = irc->accounts; acc; acc = acc->next ) + { + if( !xml_printf( fd, "\t<account protocol=\"%s\" handle=\"%s\" password=\"%s\" autoconnect=\"%s\"", acc->prpl->name, acc->user, acc->pass, "yes" ) ) + goto write_error; + if( acc->server && acc->server[0] && !xml_printf( fd, " server=\"%s\"", acc->server ) ) + goto write_error; + if( !xml_printf( fd, ">\n" ) ) + goto write_error; + + for( nick = irc->nicks; nick; nick = nick->next ) + if( nick->proto == acc->prpl ) + if( !xml_printf( fd, "\t\t<buddy handle=\"%s\" nick=\"%s\" />\n", nick->handle, nick->nick ) ) + goto write_error; + + if( !xml_printf( fd, "\t</account>\n" ) ) + goto write_error; + } + + if( !xml_printf( fd, "</user>\n" ) ) + goto write_error; + + close( fd ); + + path2 = g_strndup( path, strlen( path ) - 1 ); + if( rename( path, path2 ) != 0 ) + { + irc_usermsg( irc, "Error while renaming temporary configuration file." ); + + g_free( path2 ); + unlink( path ); + + return STORAGE_OTHER_ERROR; + } + + g_free( path2 ); + + return STORAGE_OK; + +write_error: + irc_usermsg( irc, "Write error. Disk full?" ); + close( fd ); + + return STORAGE_OTHER_ERROR; +} + +storage_t storage_xml = { + .name = "xml", + .init = xml_init, +// .check_pass = xml_check_pass, +// .remove = xml_remove, + .load = xml_load, + .save = xml_save +}; |