Python：Sqlmap源码精读之解析xml
XML
<?xml version="1.0" encoding="UTF-8"?> <root> <!-- MySQL --> <dbms value="MySQL"> <cast query="CAST(%s AS CHAR)"/> <length query="LENGTH(%s)"/> <isnull query="IFNULL(%s,' ')"/> <delimiter query=","/> <limit query="LIMIT %d,%d"/> <limitregexp query="\s+LIMIT\s+([\d]+)\s*\,\s*([\d]+)"/> <limitgroupstart query="1"/> <limitgroupstop query="2"/> <limitstring query=" LIMIT "/> <order query="ORDER BY %s ASC"/> <count query="COUNT(%s)"/> <comment query="-- " query2="/*" query3="#"/> <!-- NOTE: MySQL 5.0.12 introduced SLEEP() function References: * http://dev.mysql.com/doc/refman/5.0/en/news-5-0-12.html * http://dev.mysql.com/doc/refman/5.1/en/miscellaneous-functions.html#function_sleep --> <timedelay query="SELECT SLEEP(%d)" query2="SELECT BENCHMARK(5000000,MD5('%d'))"/> <substring query="MID((%s),%d,%d)"/> <case query="SELECT (CASE WHEN (%s) THEN 1 ELSE 0 END)"/> <inference query="ORD(MID((%s),%d,1)) > %d"/> <banner query="VERSION()"/> <current_user query="CURRENT_USER()"/> <current_db query="DATABASE()"/> <is_dba query="(SELECT super_priv FROM mysql.user WHERE user='%s' LIMIT 0,1)='Y'"/> <check_udf query="(SELECT name FROM mysql.func WHERE name='%s' LIMIT 0,1)='%s'"/> <users> <inband query="SELECT grantee FROM information_schema.USER_PRIVILEGES" query2="SELECT user FROM mysql.user"/> <blind query="SELECT DISTINCT(grantee) FROM information_schema.USER_PRIVILEGES LIMIT %d,1" query2="SELECT DISTINCT(user) FROM mysql.user LIMIT %d,1" count="SELECT COUNT(DISTINCT(grantee)) FROM information_schema.USER_PRIVILEGES" count2="SELECT COUNT(DISTINCT(user)) FROM mysql.user"/> </users> <passwords> <inband query="SELECT user,password FROM mysql.user" condition="user"/> <blind query="SELECT DISTINCT(password) FROM mysql.user WHERE user='%s' LIMIT %d,1" count="SELECT COUNT(DISTINCT(password)) FROM mysql.user WHERE user='%s'"/> </passwords> <privileges> <inband query="SELECT grantee,privilege_type FROM information_schema.USER_PRIVILEGES" condition="grantee" query2="SELECT user,select_priv,insert_priv,update_priv,delete_priv,create_priv,drop_priv,reload_priv,shutdown_priv,process_priv,file_priv,grant_priv,references_priv,index_priv,alter_priv,show_db_priv,super_priv,create_tmp_table_priv,lock_tables_priv,execute_priv,repl_slave_priv,repl_client_priv,create_view_priv,show_view_priv,create_routine_priv,alter_routine_priv,create_user_priv FROM mysql.user" condition2="user"/> <blind query="SELECT DISTINCT(privilege_type) FROM information_schema.USER_PRIVILEGES WHERE grantee%s%s LIMIT %d,1" query2="SELECT select_priv,insert_priv,update_priv,delete_priv,create_priv,drop_priv,reload_priv,shutdown_priv,process_priv,file_priv,grant_priv,references_priv,index_priv,alter_priv,show_db_priv,super_priv,create_tmp_table_priv,lock_tables_priv,execute_priv,repl_slave_priv,repl_client_priv,create_view_priv,show_view_priv,create_routine_priv,alter_routine_priv,create_user_priv FROM mysql.user WHERE user='%s' LIMIT %d,1" count="SELECT COUNT(DISTINCT(privilege_type)) FROM information_schema.USER_PRIVILEGES WHERE grantee%s%s" count2="SELECT COUNT(*) FROM mysql.user WHERE user='%s'"/> </privileges> <roles/> <dbs> <inband query="SELECT schema_name FROM information_schema.SCHEMATA" query2="SELECT db FROM mysql.db"/> <blind query="SELECT DISTINCT(schema_name) FROM information_schema.SCHEMATA LIMIT %d,1" query2="SELECT DISTINCT(db) FROM mysql.db LIMIT %d,1" count="SELECT COUNT(DISTINCT(schema_name)) FROM information_schema.SCHEMATA" count2="SELECT COUNT(DISTINCT(db)) FROM mysql.db"/> </dbs> <tables> <inband query="SELECT table_schema,table_name FROM information_schema.TABLES" condition="table_schema"/> <blind query="SELECT table_name FROM information_schema.TABLES WHERE table_schema='%s' LIMIT %d,1" count="SELECT COUNT(table_name) FROM information_schema.TABLES WHERE table_schema='%s'"/> </tables> <columns> <inband query="SELECT column_name,column_type FROM information_schema.COLUMNS WHERE table_name='%s' AND table_schema='%s'" condition="column_name"/> <blind query="SELECT column_name FROM information_schema.COLUMNS WHERE table_name='%s' AND table_schema='%s'" query2="SELECT column_type FROM information_schema.COLUMNS WHERE table_name='%s' AND column_name='%s' AND table_schema='%s'" count="SELECT COUNT(column_name) FROM information_schema.COLUMNS WHERE table_name='%s' AND table_schema='%s'" condition="column_name"/> </columns> <dump_table> <inband query="SELECT %s FROM %s.%s"/> <blind query="SELECT %s FROM %s.%s LIMIT %d,1" count="SELECT COUNT(*) FROM %s.%s"/> </dump_table> <search_db> <inband query="SELECT schema_name FROM information_schema.SCHEMATA WHERE " query2="SELECT db FROM mysql.db WHERE " condition="schema_name" condition2="db"/> <blind query="SELECT DISTINCT(schema_name) FROM information_schema.SCHEMATA WHERE " query2="SELECT DISTINCT(db) FROM mysql.db WHERE " count="SELECT COUNT(DISTINCT(schema_name)) FROM information_schema.SCHEMATA WHERE " count2="SELECT COUNT(DISTINCT(db)) FROM mysql.db WHERE " condition="schema_name" condition2="db"/> </search_db> <search_table> <inband query="SELECT table_schema,table_name FROM information_schema.TABLES WHERE " condition="table_name" condition2="table_schema"/> <blind query="SELECT DISTINCT(table_schema) FROM information_schema.TABLES WHERE " query2="SELECT DISTINCT(table_name) FROM information_schema.TABLES WHERE table_schema='%s'" count="SELECT COUNT(DISTINCT(table_schema)) FROM information_schema.TABLES WHERE " count2="SELECT COUNT(DISTINCT(table_name)) FROM information_schema.TABLES WHERE table_schema='%s'" condition="table_name" condition2="table_schema"/> </search_table> <search_column> <inband query="SELECT table_schema,table_name FROM information_schema.COLUMNS WHERE " condition="column_name" condition2="table_schema"/> <blind query="SELECT DISTINCT(table_schema) FROM information_schema.COLUMNS WHERE " query2="SELECT DISTINCT(table_name) FROM information_schema.COLUMNS WHERE table_schema='%s'" count="SELECT COUNT(DISTINCT(table_schema)) FROM information_schema.COLUMNS WHERE " count2="SELECT COUNT(DISTINCT(table_name)) FROM information_schema.COLUMNS WHERE table_schema='%s'" condition="column_name" condition2="table_schema"/> </search_column> </dbms> <!-- PostgreSQL --> <dbms value="PostgreSQL"> <cast query="CAST(%s AS CHARACTER(10000))"/> <length query="LENGTH(%s)"/> <isnull query="COALESCE(%s,' ')"/> <delimiter query="||"/> <limit query="OFFSET %d LIMIT %d"/> <limitregexp query="\s+OFFSET\s+([\d]+)\s+LIMIT\s+([\d]+)"/> <limitgroupstart query="1"/> <limitgroupstop query="2"/> <limitstring query=" OFFSET "/> <order query="ORDER BY %s ASC"/> <count query="COUNT(%s)"/> <comment query="--" query2="/*"/> <!-- NOTE: PostgreSQL 8.2 introduced PG_SLEEP() function References: * http://www.postgresql.org/docs/8.3/interactive/release-8-2.html * http://www.postgresql.org/docs/8.3/interactive/functions-datetime.html#FUNCTIONS-DATETIME-DELAY --> <timedelay query="SELECT PG_SLEEP(%d)" query2="SELECT 'sqlmap' WHERE exists(SELECT * FROM generate_series(1,300000%d))" query3="CREATE OR REPLACE FUNCTION sleep(int) RETURNS int AS '/lib/libc.so.6','sleep' language 'C' STRICT; SELECT sleep(%d)"/> <substring query="SUBSTR((%s)::text,%d,%d)"/> <case query="SELECT (CASE WHEN (%s) THEN '1' ELSE '0' END)"/> <inference query="ASCII(SUBSTR((%s)::text,%d,1)) > %d"/> <banner query="SELECT VERSION()"/> <current_user query="SELECT CURRENT_USER"/> <current_db query="SELECT CURRENT_DATABASE()"/> <is_dba query="(SELECT usesuper=true FROM pg_user WHERE usename=CURRENT_USER OFFSET 0 LIMIT 1)"/> <check_udf query="(SELECT proname='%s' FROM pg_proc WHERE proname='%s' OFFSET 0 LIMIT 1)"/> <users> <inband query="SELECT usename FROM pg_user"/> <blind query="SELECT DISTINCT(usename) FROM pg_user OFFSET %d LIMIT 1" count="SELECT COUNT(DISTINCT(usename)) FROM pg_user"/> </users> <passwords> <inband query="SELECT usename,passwd FROM pg_shadow" condition="usename"/> <blind query="SELECT DISTINCT(passwd) FROM pg_shadow WHERE usename='%s' OFFSET %d LIMIT 1" count="SELECT COUNT(DISTINCT(passwd)) FROM pg_shadow WHERE usename='%s'"/> </passwords> <privileges> <inband query="SELECT usename,(CASE WHEN usecreatedb THEN 1 ELSE 0 END),(CASE WHEN usesuper THEN 1 ELSE 0 END),(CASE WHEN usecatupd THEN 1 ELSE 0 END) FROM pg_user" condition="usename"/> <blind query="SELECT (CASE WHEN usecreatedb THEN 1 ELSE 0 END),(CASE WHEN usesuper THEN 1 ELSE 0 END),(CASE WHEN usecatupd THEN 1 ELSE 0 END) FROM pg_user WHERE usename='%s' OFFSET %d LIMIT 1" count="SELECT COUNT(DISTINCT(usename)) FROM pg_user WHERE usename='%s'"/> </privileges> <roles/> <dbs> <inband query="SELECT datname FROM pg_database"/> <blind query="SELECT DISTINCT(datname) FROM pg_database OFFSET %d LIMIT 1" count="SELECT COUNT(DISTINCT(datname)) FROM pg_database"/> </dbs> <tables> <inband query="SELECT schemaname,tablename FROM pg_tables" condition="schemaname"/> <blind query="SELECT tablename FROM pg_tables WHERE schemaname='%s' OFFSET %d LIMIT 1" count="SELECT COUNT(tablename) FROM pg_tables WHERE schemaname='%s'"/> </tables> <columns> <inband query="SELECT attname,typname FROM pg_namespace,pg_type,pg_attribute b JOIN pg_class a ON a.oid=b.attrelid WHERE a.relnamespace=pg_namespace.oid AND pg_type.oid=b.atttypid AND attnum>0 AND a.relname='%s' AND nspname='%s'" condition="attname"/> <blind query="SELECT attname FROM pg_namespace,pg_type,pg_attribute b JOIN pg_class a ON a.oid=b.attrelid WHERE a.relnamespace=pg_namespace.oid AND pg_type.oid=b.atttypid AND attnum>0 AND a.relname='%s' AND nspname='%s'" query2="SELECT typname FROM pg_namespace,pg_type,pg_attribute b JOIN pg_class a ON a.oid=b.attrelid WHERE a.relname='%s' AND a.relnamespace=pg_namespace.oid AND pg_type.oid=b.atttypid AND attnum>0 AND attname='%s' AND nspname='%s'" count="SELECT COUNT(attname) FROM pg_namespace,pg_type,pg_attribute b JOIN pg_class a ON a.oid=b.attrelid WHERE a.relnamespace=pg_namespace.oid AND pg_type.oid=b.atttypid AND attnum>0 AND a.relname='%s' AND nspname='%s'" condition="attname"/> </columns> <dump_table> <inband query="SELECT %s FROM %s.%s"/> <blind query="SELECT %s FROM %s.%s OFFSET %d LIMIT 1" count="SELECT COUNT(*) FROM %s.%s"/> </dump_table> <search_db> <inband query="SELECT datname FROM pg_database WHERE " query2="" condition="datname" condition2=""/> <blind query="SELECT DISTINCT(datname) FROM pg_database WHERE " query2="" count="SELECT COUNT(DISTINCT(datname)) FROM pg_database WHERE " count2="" condition="datname" condition2=""/> </search_db> <search_table> <inband query="SELECT schemaname,tablename FROM pg_tables WHERE " condition="tablename" condition2="schemaname"/> <blind query="SELECT DISTINCT(schemaname) FROM pg_tables WHERE " query2="SELECT tablename FROM pg_tables WHERE schemaname='%s'" count="SELECT COUNT(DISTINCT(schemaname)) FROM pg_tables WHERE " count2="SELECT COUNT(tablename) FROM pg_tables WHERE schemaname='%s'" condition="tablename" condition2="schemaname"/> </search_table> <search_column> <inband query="SELECT nspname,relname FROM pg_namespace,pg_type,pg_attribute b JOIN pg_class a ON a.oid=b.attrelid WHERE a.relnamespace=pg_namespace.oid AND pg_type.oid=b.atttypid AND attnum>0 AND " condition="attname" condition2="nspname"/> <blind query="SELECT DISTINCT(nspname) FROM pg_namespace,pg_type,pg_attribute b JOIN pg_class a ON a.oid=b.attrelid WHERE a.relnamespace=pg_namespace.oid AND pg_type.oid=b.atttypid AND attnum>0 AND " query2="SELECT DISTINCT(relname) FROM pg_namespace,pg_type,pg_attribute b JOIN pg_class a ON a.oid=b.attrelid WHERE a.relnamespace=pg_namespace.oid AND pg_type.oid=b.atttypid AND attnum>0 AND nspname='%s'" count="SELECT COUNT(DISTINCT(nspname)) FROM pg_namespace,pg_type,pg_attribute b JOIN pg_class a ON a.oid=b.attrelid WHERE a.relnamespace=pg_namespace.oid AND pg_type.oid=b.atttypid AND attnum>0 AND " count2="SELECT COUNT(DISTINCT(relname)) FROM pg_namespace,pg_type,pg_attribute b JOIN pg_class a ON a.oid=b.attrelid WHERE a.relnamespace=pg_namespace.oid AND pg_type.oid=b.atttypid AND attnum>0 AND nspname='%s'" condition="attname" condition2="nspname"/> </search_column> </dbms> <!-- Microsoft SQL Server --> <dbms value="Microsoft SQL Server"> <cast query="CAST(%s AS NVARCHAR(4000))"/> <length query="LTRIM(STR(LEN(%s)))"/> <isnull query="ISNULL(%s,' ')"/> <delimiter query="+"/> <limit query="SELECT TOP %d "/> <limitregexp query="TOP\s+([\d]+)\s+.+?\s+FROM\s+.+?\s+WHERE\s+.+?\s+NOT\s+IN\s+\(SELECT\s+TOP\s+([\d]+)\s+"/> <limitgroupstart query="2"/> <limitgroupstop query="1"/> <limitstring/> <order query="ORDER BY %s ASC"/> <count query="COUNT(%s)"/> <comment query="--" query2="/*"/> <timedelay query="WAITFOR DELAY '0:0:%d'"/> <substring query="SUBSTRING((%s),%d,%d)"/> <case query="SELECT (CASE WHEN (%s) THEN '1' ELSE '0' END)"/> <inference query="ASCII(SUBSTRING((%s),%d,1)) > %d"/> <banner query="SELECT @@VERSION"/> <current_user query="SELECT SYSTEM_USER"/> <current_db query="SELECT DB_NAME()"/> <is_dba query="IS_SRVROLEMEMBER('sysadmin')=1" query2="IS_SRVROLEMEMBER('sysadmin','%s')=1"/> <users> <inband query="SELECT name FROM master..syslogins" query2="SELECT name FROM sys.sql_logins"/> <!-- NOTE: in NOT IN kind of queries ORDER BY is a must --> <blind query="SELECT TOP 1 name FROM master..syslogins WHERE name NOT IN (SELECT TOP %d name FROM master..syslogins ORDER BY name) ORDER BY name" query2="SELECT TOP 1 name FROM sys.sql_logins WHERE name NOT IN (SELECT TOP %d name FROM sys.sql_logins ORDER BY name) ORDER BY name" count="SELECT LTRIM(STR(COUNT(name))) FROM master..syslogins" count2="SELECT LTRIM(STR(COUNT(name))) FROM sys.sql_logins"/> </users> <passwords> <inband query="SELECT name,master.dbo.fn_varbintohexstr(password) FROM master..sysxlogins" query2="SELECT name,master.dbo.fn_varbintohexstr(password_hash) FROM sys.sql_logins" condition="name"/> <blind query="SELECT TOP 1 master.dbo.fn_varbintohexstr(password) FROM master..sysxlogins WHERE name='%s' AND password NOT IN (SELECT TOP %d password FROM master..sysxlogins WHERE name='%s' ORDER BY password) ORDER BY password" query2="SELECT TOP 1 master.dbo.fn_varbintohexstr(password_hash) FROM sys.sql_logins WHERE name='%s' AND password_hash NOT IN (SELECT TOP %d password_hash FROM sys.sql_logins WHERE name='%s' ORDER BY password_hash) ORDER BY password_hash" count="SELECT LTRIM(STR(COUNT(password))) FROM master..sysxlogins WHERE name='%s'" count2="SELECT LTRIM(STR(COUNT(password_hash))) FROM sys.sql_logins WHERE name='%s'"/> </passwords> <!-- NOTE: in Microsoft SQL Server there is no query to enumerate DBMS users privileges --> <privileges/> <roles/> <dbs> <inband query="SELECT name FROM master..sysdatabases"/> <blind query="SELECT TOP 1 name FROM master..sysdatabases WHERE name NOT IN (SELECT TOP %d name FROM master..sysdatabases ORDER BY name) ORDER BY name" count="SELECT LTRIM(STR(COUNT(name))) FROM master..sysdatabases"/> </dbs> <tables> <inband query="SELECT sysusers.name+'.'+sysobjects.name FROM %s..sysobjects INNER JOIN sysusers ON sysobjects.uid = sysusers.uid WHERE xtype IN ('u', 'v')"/> <blind query="SELECT TOP 1 sysusers.name+'.'+sysobjects.name FROM %s..sysobjects INNER JOIN sysusers ON sysobjects.uid = sysusers.uid WHERE xtype IN ('u', 'v') AND sysusers.name+'.'+sysobjects.name NOT IN (SELECT TOP %d sysusers.name+'.'+sysobjects.name FROM %s..sysobjects INNER JOIN sysusers ON sysobjects.uid = sysusers.uid WHERE xtype IN ('u', 'v') ORDER BY sysusers.name+'.'+sysobjects.name) ORDER BY sysusers.name+'.'+sysobjects.name" count="SELECT LTRIM(STR(COUNT(name))) FROM %s..sysobjects WHERE xtype IN ('u','v')"/> </tables> <columns> <inband query="SELECT %s..syscolumns.name,TYPE_NAME(%s..syscolumns.xtype) FROM %s..syscolumns,%s..sysobjects WHERE %s..syscolumns.id=%s..sysobjects.id AND %s..sysobjects.name='%s'" condition="[DB]..syscolumns.name"/> <blind query="SELECT %s..syscolumns.name FROM %s..syscolumns,%s..sysobjects WHERE %s..syscolumns.id=%s..sysobjects.id AND %s..sysobjects.name='%s'" query2="SELECT TYPE_NAME(%s..syscolumns.xtype) FROM %s..syscolumns,%s..sysobjects WHERE %s..syscolumns.name='%s' AND %s..syscolumns.id=%s..sysobjects.id AND %s..sysobjects.name='%s'" count="SELECT LTRIM(STR(COUNT(name))) FROM %s..syscolumns WHERE id=(SELECT id FROM %s..sysobjects WHERE name='%s')" condition="[DB]..syscolumns.name"/> </columns> <dump_table> <inband query="SELECT %s FROM %s.%s"/> <blind query="SELECT MIN(%s) FROM %s WHERE CONVERT(NVARCHAR(4000),%s)>'%s'" query2="SELECT MAX(%s) FROM %s WHERE CONVERT(NVARCHAR(4000),%s) LIKE '%s'" count="SELECT LTRIM(STR(COUNT(*))) FROM %s" count2="SELECT LTRIM(STR(COUNT(DISTINCT(%s)))) FROM %s"/> </dump_table> <search_db> <inband query="SELECT name FROM master..sysdatabases WHERE " condition="name"/> <blind query="SELECT name FROM master..sysdatabases WHERE " count="SELECT LTRIM(STR(COUNT(name))) FROM master..sysdatabases WHERE " condition="name"/> </search_db> <search_table> <inband query="SELECT name FROM %s..sysobjects WHERE xtype IN ('u','v') AND " condition="name" condition2="name"/> <blind query="" query2="SELECT name FROM %s..sysobjects WHERE xtype IN ('u','v') " count="" count2="SELECT LTRIM(STR(COUNT(name))) FROM %s..sysobjects WHERE xtype IN ('u','v')" condition="name" condition2="name"/> </search_table> <search_column> <inband query="SELECT %s..sysobjects.name FROM %s..syscolumns,%s..sysobjects WHERE %s..syscolumns.id=%s..sysobjects.id AND %s..sysobjects.xtype in ('u', 'v')" condition="[DB]..syscolumns.name"/> <blind query="" query2="SELECT %s..sysobjects.name FROM %s..syscolumns,%s..sysobjects WHERE %s..syscolumns.id=%s..sysobjects.id AND %s..sysobjects.xtype in ('u', 'v')" count="" count2="SELECT COUNT(%s..sysobjects.name) FROM %s..syscolumns,%s..sysobjects WHERE %s..syscolumns.id=%s..sysobjects.id" condition="[DB]..syscolumns.name"/> </search_column> </dbms> <!-- Oracle --> <dbms value="Oracle"> <cast query="CAST(%s AS VARCHAR(4000))"/> <length query="LENGTH(%s)"/> <isnull query="NVL(%s,' ')"/> <delimiter query="||"/> <limit query="ROWNUM AS LIMIT %s) WHERE LIMIT"/> <limitregexp query="ROWNUM\s+AS\s+.+?\s+FROM\s+.+?\)\s+WHERE\s+.+?\s*=\s*[\d]+|ROWNUM\s*=\s*[\d]+"/> <limitgroupstart/> <limitgroupstop/> <limitstring/> <order query="ORDER BY %s ASC"/> <count query="COUNT(%s)"/> <comment query="--"/> <timedelay query="BEGIN DBMS_LOCK.SLEEP(%d); END" query2="EXEC DBMS_LOCK.SLEEP(%d.00)" query3="EXEC USER_LOCK.SLEEP(%d.00)"/> <substring query="SUBSTR((%s),%d,%d)"/> <case query="SELECT (CASE WHEN (%s) THEN 1 ELSE 0 END)"/> <inference query="ASCII(SUBSTR((%s),%d,1)) > %d"/> <banner query="SELECT banner FROM v$version WHERE ROWNUM=1"/> <current_user query="SELECT USER FROM DUAL"/> <!-- NOTE: current physical DB but not usable for enumeration <current_db query="SELECT SYS.DATABASE_NAME FROM DUAL"/> --> <current_db query="SELECT USER FROM DUAL"/> <!-- NOTE: in Oracle to check if the session user is DBA you can use: SELECT USERENV('ISDBA') FROM DUAL --> <is_dba query="(SELECT GRANTED_ROLE FROM DBA_ROLE_PRIVS WHERE GRANTEE=USER AND GRANTED_ROLE='DBA')='DBA'"/> <users> <inband query="SELECT USERNAME FROM SYS.ALL_USERS"/> <blind query="SELECT DISTINCT(USERNAME) FROM (SELECT DISTINCT(USERNAME),ROWNUM AS LIMIT FROM SYS.ALL_USERS) WHERE LIMIT=%d" count="SELECT COUNT(DISTINCT(USERNAME)) FROM SYS.ALL_USERS"/> </users> <passwords> <inband query="SELECT NAME,PASSWORD FROM SYS.USER$" condition="NAME"/> <blind query="SELECT DISTINCT(PASSWORD) FROM (SELECT DISTINCT(PASSWORD),ROWNUM AS LIMIT FROM SYS.USER$ WHERE NAME='%s') WHERE LIMIT=%d" count="SELECT COUNT(DISTINCT(PASSWORD)) FROM SYS.USER$ WHERE NAME='%s'"/> </passwords> <!-- NOTE: in Oracle to enumerate the privileges for the session user you can use: SELECT * FROM SESSION_PRIVS --> <privileges> <inband query="SELECT GRANTEE,PRIVILEGE FROM DBA_SYS_PRIVS" query2="SELECT USERNAME,PRIVILEGE FROM USER_SYS_PRIVS" condition="GRANTEE" condition2="USERNAME"/> <blind query="SELECT DISTINCT(PRIVILEGE) FROM (SELECT DISTINCT(PRIVILEGE),ROWNUM AS LIMIT FROM DBA_SYS_PRIVS WHERE GRANTEE='%s') WHERE LIMIT=%d" query2="SELECT DISTINCT(PRIVILEGE) FROM (SELECT DISTINCT(PRIVILEGE),ROWNUM AS LIMIT FROM USER_SYS_PRIVS WHERE USERNAME='%s') WHERE LIMIT=%d" count="SELECT COUNT(DISTINCT(PRIVILEGE)) FROM DBA_SYS_PRIVS WHERE GRANTEE='%s'" count2="SELECT COUNT(DISTINCT(PRIVILEGE)) FROM USER_SYS_PRIVS WHERE USERNAME='%s'"/> </privileges> <!-- NOTE: in Oracle to enumerate the roles for the session user you can use: SELECT * FROM SESSION_ROLES --> <roles> <inband query="SELECT GRANTEE,GRANTED_ROLE FROM DBA_ROLE_PRIVS" query2="SELECT USERNAME,GRANTED_ROLE FROM USER_ROLE_PRIVS" condition="GRANTEE" condition2="USERNAME"/> <blind query="SELECT DISTINCT(GRANTED_ROLE) FROM (SELECT DISTINCT(GRANTED_ROLE),ROWNUM AS LIMIT FROM DBA_ROLE_PRIVS WHERE GRANTEE='%s') WHERE LIMIT=%d" query2="SELECT DISTINCT(GRANTED_ROLE) FROM (SELECT DISTINCT(GRANTED_ROLE),ROWNUM AS LIMIT FROM USER_ROLE_PRIVS WHERE USERNAME='%s') WHERE LIMIT=%d" count="SELECT COUNT(DISTINCT(GRANTED_ROLE)) FROM DBA_ROLE_PRIVS WHERE GRANTEE='%s'" count2="SELECT COUNT(DISTINCT(GRANTED_ROLE)) FROM USER_ROLE_PRIVS WHERE USERNAME='%s'"/> </roles> <!-- NOTE: in Oracle schema names are the counterpart to database names on other DBMSes --> <dbs> <inband query="SELECT OWNER FROM (SELECT DISTINCT(OWNER) FROM SYS.ALL_TABLES)"/> <blind query="SELECT OWNER FROM (SELECT OWNER,ROWNUM AS LIMIT FROM (SELECT DISTINCT(OWNER) FROM SYS.ALL_TABLES)) WHERE LIMIT=%d" count="SELECT COUNT(DISTINCT(OWNER)) FROM SYS.ALL_TABLES"/> </dbs> <tables> <inband query="SELECT OWNER,TABLE_NAME FROM SYS.ALL_TABLES" condition="OWNER"/> <blind query="SELECT TABLE_NAME FROM (SELECT TABLE_NAME,ROWNUM AS LIMIT FROM SYS.ALL_TABLES WHERE OWNER='%s') WHERE LIMIT=%d" count="SELECT COUNT(TABLE_NAME) FROM SYS.ALL_TABLES WHERE OWNER='%s'"/> </tables> <columns> <inband query="SELECT COLUMN_NAME,DATA_TYPE FROM SYS.ALL_TAB_COLUMNS WHERE TABLE_NAME='%s'" condition="COLUMN_NAME"/> <blind query="SELECT COLUMN_NAME FROM SYS.ALL_TAB_COLUMNS WHERE TABLE_NAME='%s'" query2="SELECT DATA_TYPE FROM SYS.ALL_TAB_COLUMNS WHERE TABLE_NAME='%s' AND COLUMN_NAME='%s'" count="SELECT COUNT(COLUMN_NAME) FROM SYS.ALL_TAB_COLUMNS WHERE TABLE_NAME='%s'" condition="COLUMN_NAME"/> </columns> <dump_table> <inband query="SELECT %s FROM %s"/> <blind query="SELECT %s FROM (SELECT %s,ROWNUM AS LIMIT FROM %s) WHERE LIMIT=%d" count="SELECT COUNT(*) FROM %s"/> </dump_table> <search_db/> <search_table> <inband query="SELECT OWNER,TABLE_NAME FROM SYS.ALL_TABLES WHERE " condition="TABLE_NAME" condition2="OWNER"/> <blind query="SELECT DISTINCT(OWNER) FROM SYS.ALL_TABLES WHERE " query2="SELECT TABLE_NAME FROM SYS.ALL_TABLES WHERE OWNER='%s'" count="SELECT COUNT(DISTINCT(OWNER)) FROM SYS.ALL_TABLES WHERE " count2="SELECT COUNT(TABLE_NAME) FROM SYS.ALL_TABLES WHERE OWNER='%s'" condition="TABLE_NAME" condition2="OWNER"/> </search_table> <search_column> <inband query="SELECT TABLE_NAME FROM SYS.ALL_TAB_COLUMNS WHERE " condition="COLUMN_NAME"/> <blind query="" query2="SELECT DISTINCT(TABLE_NAME) FROM SYS.ALL_TAB_COLUMNS" count="" count2="SELECT COUNT(DISTINCT(TABLE_NAME)) FROM SYS.ALL_TAB_COLUMNS" condition="COLUMN_NAME"/> </search_column> </dbms> <!-- SQLite --> <dbms value="SQLite"> <cast query="CAST(%s AS VARCHAR(8000))" dbms_version=">=3.0"/> <length query="LENGTH(%s)"/> <isnull query="IFNULL(%s,' ')"/> <delimiter query="||"/> <limit query="LIMIT %d,%d"/> <limitregexp query="\s+LIMIT\s+([\d]+)\s*\,\s*([\d]+)"/> <limitgroupstart query="1"/> <limitgroupstop query="2"/> <limitstring query=" LIMIT "/> <order query="ORDER BY %s ASC"/> <count query="COUNT(%s)"/> <comment query="--" query2="/*"/> <timedelay query="SELECT LIKE('ABCDEFG',UPPER(HEX(RANDOMBLOB(1000000%d))))" dbms_version=">=3.0"/> <substring query="SUBSTR((%s),%d,%d)"/> <case query="SELECT (CASE WHEN (%s) THEN 1 ELSE 0 END)"/> <inference query="SUBSTR((%s),%d,1) > '%c'"/> <banner query="SELECT SQLITE_VERSION()"/> <current_user/> <current_db/> <is_dba/> <check_udf/> <users/> <passwords/> <privileges/> <roles/> <dbs/> <tables> <inband query="SELECT tbl_name FROM sqlite_master WHERE type='table'"/> <blind query="SELECT tbl_name FROM sqlite_master WHERE type='table' LIMIT %d,1" count="SELECT COUNT(tbl_name) FROM sqlite_master WHERE type='table'"/> </tables> <columns> <inband query="SELECT MIN(sql) FROM sqlite_master WHERE tbl_name='%s'"/> <blind query="SELECT sql FROM sqlite_master WHERE tbl_name='%s' LIMIT 1" condition=""/> </columns> <dump_table> <inband query="SELECT %s FROM %s"/> <blind query="SELECT %s FROM %s LIMIT %d,1" count="SELECT COUNT(*) FROM %s"/> </dump_table> <search_db/> <search_table/> <search_column/> </dbms> <!-- Microsoft Access --> <dbms value="Microsoft Access"> <cast query="CVAR(%s)"/> <length query="LEN(%s)"/> <isnull query="IIF(LEN(%s)=0,' ',%s)"/> <delimiter query=","/> <limit query="TOP %d"/> <limitregexp query="\s+TOP\s+([\d]+)"/> <limitgroupstart query="1"/> <limitgroupstop query="1"/> <limitstring query=" TOP "/> <order query="ORDER BY %s ASC"/> <count query="COUNT(%s)"/> <comment query="%00"/> <timedelay/> <substring query="MID((%s),%d,%d)"/> <case query="IIF(%s,1,0)"/> <banner/> <!--CURRENTUSER() is not available outside the MS Access query tool itself--> <current_user/> <current_db/> <inference query="ASC(MID((%s),%d,1)) > %d"/> <is_dba/> <dbs/> <!--MSysObjects have no read permission by default--> <tables> <blind query="SELECT MIN(Name) FROM MSysObjects WHERE Type=1 AND Name>'%s'" count="SELECT COUNT(Name) FROM MSysObjects WHERE Type=1"/> </tables> <dump_table> <inband query="SELECT %s FROM %s"/> <blind query="SELECT MIN(%s) FROM %s WHERE CVAR(%s)>'%s'" query2="SELECT TOP 1 %s FROM %s WHERE CVAR(%s) LIKE '%s'" count="SELECT COUNT(*) FROM %s" count2="SELECT COUNT(*) FROM (SELECT DISTINCT %s FROM %s)"/> </dump_table> <users/> <privileges/> <roles/> <search_db/> <search_table/> <search_column/> </dbms> <!-- Firebird --> <dbms value="Firebird"> <cast query="CAST(%s AS VARCHAR(10000))"/> <length query="CHAR_LENGTH(%s)"/> <!-- TODO: add proper value --> <delimiter query=""/> <limit query="ROWS %d TO %d"/> <limitregexp query="\s+ROWS\s+([\d]+)(\s+\TO\s+([\d]+))?"/> <limitgroupstart query="1"/> <limitgroupstop query="2"/> <limitstring query=" ROWS "/> <isnull query="%s"/> <order query="ORDER BY %s ASC"/> <comment query="--"/> <count query="COUNT(%s)"/> <timedelay query="SELECT COUNT(*) FROM RDB$DATABASE AS T1,RDB$FIELDS AS T2,RDB$FUNCTIONS AS T3,RDB$TYPES AS T4,RDB$FORMATS AS T5,RDB$COLLATIONS AS T6"/> <substring query="SUBSTRING((%s) FROM %d FOR %d)"/> <case query="SELECT IIF(%s,1,0)"/> <banner query="SELECT RDB$GET_CONTEXT('SYSTEM','ENGINE_VERSION') FROM RDB$DATABASE" dbms_version=">=2.1"/> <current_user query="SELECT CURRENT_USER FROM RDB$DATABASE"/> <current_db query="SELECT RDB$GET_CONTEXT('SYSTEM','DB_NAME') FROM RDB$DATABASE"/> <users> <inband query="SELECT DISTINCT RDB$USER FROM RDB$USER_PRIVILEGES"/> <blind query="SELECT FIRST 1 SKIP %d DISTINCT(RDB$USER) FROM RDB$USER_PRIVILEGES" count="SELECT COUNT(DISTINCT(RDB$USER)) FROM RDB$USER_PRIVILEGES"/> </users> <inference query="ASCII_VAL(SUBSTRING((%s) FROM %d FOR 1)) > %d" dbms_version=">=2.1" query2="SUBSTRING((%s) FROM %d FOR 1) > '%c'"/> <is_dba query="CURRENT_USER='SYSDBA'"/> <tables> <inband query="SELECT RDB$RELATION_NAME FROM RDB$RELATIONS WHERE RDB$VIEW_BLR IS NULL AND (RDB$SYSTEM_FLAG IS NULL OR RDB$SYSTEM_FLAG = 0)"/> <blind query="SELECT FIRST 1 SKIP %d RDB$RELATION_NAME FROM RDB$RELATIONS WHERE RDB$VIEW_BLR IS NULL AND (RDB$SYSTEM_FLAG IS NULL OR RDB$SYSTEM_FLAG = 0)" count="SELECT COUNT(RDB$RELATION_NAME) FROM RDB$RELATIONS WHERE RDB$VIEW_BLR IS NULL AND (RDB$SYSTEM_FLAG IS NULL OR RDB$SYSTEM_FLAG = 0)"/> </tables> <privileges> <inband query="SELECT RDB$USER,RDB$PRIVILEGE FROM RDB$USER_PRIVILEGES" condition="RDB$USER"/> <blind query="SELECT FIRST 1 SKIP %d DISTINCT(RDB$PRIVILEGE) FROM RDB$USER_PRIVILEGES WHERE RDB$USER='%s'" count="SELECT COUNT(DISTINCT(RDB$PRIVILEGE)) FROM RDB$USER_PRIVILEGES WHERE RDB$USER='%s'"/> </privileges> <roles/> <dbs/> <columns> <!--<inband query="SELECT r.RDB$FIELD_NAME,CASE f.RDB$FIELD_TYPE WHEN 261 THEN 'BLOB' WHEN 14 THEN 'CHAR' WHEN 40 THEN 'CSTRING' WHEN 11 THEN 'D_FLOAT' WHEN 27 THEN 'DOUBLE' WHEN 10 THEN 'FLOAT' WHEN 16 THEN 'INT64' WHEN 8 THEN 'INTEGER' WHEN 9 THEN 'QUAD' WHEN 7 THEN 'SMALLINT' WHEN 12 THEN 'DATE' WHEN 13 THEN 'TIME' WHEN 35 THEN 'TIMESTAMP' WHEN 37 THEN 'VARCHAR' ELSE 'UNKNOWN' END AS field_type FROM RDB$RELATION_FIELDS r LEFT JOIN RDB$FIELDS f ON r.RDB$FIELD_SOURCE = f.RDB$FIELD_NAME WHERE r.RDB$RELATION_NAME='%s'"/>--> <inband query="SELECT r.RDB$FIELD_NAME,f.RDB$FIELD_TYPE FROM RDB$RELATION_FIELDS r LEFT JOIN RDB$FIELDS f ON r.RDB$FIELD_SOURCE = f.RDB$FIELD_NAME WHERE r.RDB$RELATION_NAME='%s'"/> <blind query="SELECT r.RDB$FIELD_NAME FROM RDB$RELATION_FIELDS r LEFT JOIN RDB$FIELDS f ON r.RDB$FIELD_SOURCE = f.RDB$FIELD_NAME WHERE r.RDB$RELATION_NAME='%s'" query2="SELECT f.RDB$FIELD_TYPE FROM RDB$RELATION_FIELDS r LEFT JOIN RDB$FIELDS f ON r.RDB$FIELD_SOURCE = f.RDB$FIELD_NAME WHERE r.RDB$RELATION_NAME='%s' AND r.RDB$FIELD_NAME='%s'" count="SELECT COUNT(r.RDB$FIELD_NAME) FROM RDB$RELATION_FIELDS r LEFT JOIN RDB$FIELDS f ON r.RDB$FIELD_SOURCE = f.RDB$FIELD_NAME WHERE r.RDB$RELATION_NAME='%s'"/> </columns> <dump_table> <inband query="SELECT %s FROM %s"/> <blind query="SELECT FIRST 1 SKIP %d %s FROM %s" count="SELECT COUNT(*) FROM %s"/> </dump_table> <search_db/> <search_table/> <search_column/> </dbms> <!-- http://dev.mysql.com/tech-resources/articles/maxdb-php-ready-for-web.html --> <!-- http://dev.mysql.com/doc/refman/5.0/es/maxdb-reserved-words.html --> <!-- http://maxdb.sap.com/doc/7_6/default.htm --> <!-- http://www.sapdb.org/7.4/htmhelp/35/f8823cb7e5d42be10000000a114027/content.htm --> <!-- http://www.ximido.de/research/PenTestingMaxDB.pdf --> <!-- SAP MaxDB --> <dbms value="SAP MaxDB"> <length query="LENGTH(%s)"/> <timedelay/> <banner query="SELECT ID FROM SYSINFO.VERSION"/> <isnull query="VALUE(%s,' ')" query2="IFNULL(%s,' ')"/> <comment query="--" query2="#"/> <count query="COUNT(%s)"/> <!-- No real cast on SAP MaxDB --> <cast query="REPLACE(CHR(%s),' ','_')"/> <current_user query="SELECT USER() FROM DUAL"/> <current_db query="SELECT DATABASE() FROM DUAL"/> <order query="ORDER BY %s ASC"/> <case query="SELECT (CASE WHEN (%s) THEN 1 ELSE 0 END)"/> <inference query="SUBSTR((%s),%d,1) > '%c'"/> <delimiter query=","/> <substring query="SUBSTR((%s),%d,%d)"/> <users> <inband query="SELECT username FROM domain.users"/> <blind query="SELECT MIN(username) FROM domain.users WHERE username > '%s'" count="SELECT CHR(COUNT(*)) FROM domain.users"/> </users> <columns> <inband query="SELECT columnname,datatype,len FROM domain.columns WHERE tablename='%s' AND schemaname=%s"/> <blind/> </columns> <tables> <inband query="SELECT tablename FROM domain.tables WHERE schemaname=%s AND type='TABLE'"/> <blind/> </tables> <dbs> <inband query="SELECT DISTINCT(schemaname) FROM domain.tables"/> <blind/> </dbs> <roles> <inband query="SELECT owner,role FROM domain.roles" condition="owner"/> <blind/> </roles> <dump_table> <inband query="SELECT %s FROM %%s"/> <blind query="SELECT MIN(%s) FROM %s WHERE CHR(%s)>'%s'" query2="SELECT MAX(%s) FROM %s WHERE CHR(%s) LIKE '%s'" count="SELECT COUNT(*) FROM %s" count2="SELECT COUNT(*) FROM (SELECT DISTINCT %s FROM %s) AS value_table"/> </dump_table> </dbms> <!-- Sybase --> <dbms value="Sybase"> <cast query="CONVERT(NVARCHAR(4000),%s)"/> <length query="LTRIM(STR(LEN(%s)))"/> <isnull query="ISNULL(%s,' ')"/> <delimiter query="+"/> <limit query="SELECT TOP %d "/> <limitregexp query="TOP\s+([\d]+)\s+.+?\s+FROM\s+.+?\s+WHERE\s+.+?\s+NOT\s+IN\s+\(SELECT\s+TOP\s+([\d]+)\s+"/> <limitgroupstart query="2"/> <limitgroupstop query="1"/> <limitstring/> <order query="ORDER BY %s ASC"/> <count query="COUNT(%s)"/> <comment query="--" query2="/*"/> <timedelay query="WAITFOR DELAY '0:0:%d'"/> <substring query="SUBSTRING((%s),%d,%d)"/> <case query="SELECT (CASE WHEN (%s) THEN '1' ELSE '0' END)"/> <inference query="ASCII(SUBSTRING((%s),%d,1)) > %d"/> <banner query="SELECT @@VERSION"/> <current_user query="SELECT SUSER_NAME()"/> <current_db query="SELECT DB_NAME()"/> <is_dba query="PATINDEX('%sa_role%',SHOW_ROLE())>0" query2="EXISTS(SELECT * FROM master..syslogins,master..sysloginroles WHERE srid=0 and name='%s')"/> <users> <inband query="SELECT name FROM master..syslogins"/> <blind/> </users> <passwords> <inband query="SELECT name,password FROM master..syslogins" condition="name"/> <blind/> </passwords> <privileges/> <roles> <inband query="SELECT name,srid FROM master..syslogins,master..sysloginroles" condition="name"/> <blind/> </roles> <dbs> <inband query="SELECT name FROM master..sysdatabases"/> <blind/> </dbs> <tables> <inband query="SELECT name FROM %s..sysobjects WHERE type IN ('U')"/> <blind/> </tables> <columns> <inband query="SELECT %s..syscolumns.name,%s..syscolumns.usertype FROM %s..syscolumns,%s..sysobjects WHERE %s..syscolumns.id=%s..sysobjects.id AND %s..sysobjects.name='%s'" condition="[DB]..syscolumns.name"/> <blind/> </columns> <dump_table> <inband query="SELECT %s FROM %s..%s"/> <blind query="SELECT MIN(%s) FROM %s WHERE CONVERT(NVARCHAR(4000),%s)>'%s'" query2="SELECT MAX(%s) FROM %s WHERE CONVERT(NVARCHAR(4000),%s) LIKE '%s'" count="SELECT COUNT(*) FROM %s" count2="SELECT COUNT(*) FROM (SELECT DISTINCT %s FROM %s) AS value_table"/> </dump_table> <search_db> <inband query="SELECT name FROM master..sysdatabases WHERE " condition="name"/> <blind/> </search_db> <search_table> <inband query="SELECT name FROM %s..sysobjects WHERE type IN ('U') AND " condition="name" condition2="name"/> <blind/> </search_table> <search_column> <inband query="SELECT %s..sysobjects.name FROM %s..syscolumns,%s..sysobjects WHERE %s..syscolumns.id=%s..sysobjects.id" condition="[DB]..syscolumns.name"/> <blind/> </search_column> </dbms> </root>
需求
基本上每个元素结点中都有query属性，比如：
元素结点：<order query="ORDER BY %s ASC"/>
query属性值：ORDER BY %s ASC
现在需要提取出结点名称和与之对应的query属性值
执行结果如下图所示：
分析
<root>是根节点，文档中的所有其他节点都被包含在<root>中。
根节点<root>共有9个<dbms>节点
每个<dbms>节点表示一种数据库，value的值是数据库名称
现在我们直接以MySQL的dbms节点作为分析对象。
<dbms value="MySQL">节点包含了30多个子节点，sqlmap会根据用户在终端中给出的参数进而读取相应的子节点的query值。
比如：
当用户在终端中输入以下命令：python sqlmap.py -u 'http://127.0.0.1/?id=1' --current-user
说明用户想获取网站：http://127.0.0.1上所运行的数据库的当前用户名。
注：<dbms value="MySQL">节点下文用MySQL节点表示，<current_user query="CURRENT_USER()"/>节点用current_user节点表示，以此类推
我们发现在queries.xml文件中，MySQL节点的子节点中有一个节点：current_user节点
节点名称是：current_user
query值：CURRENT_USER()
sqlmap中会通过以下代码来获取的：
if conf.getCurrentUser: conf.dumper.currentUser(conf.dbmsHandler.getCurrentUser())
getCurrentUser()函数的代码如下：
def getCurrentUser(self): infoMsg = "fetching current user" logger.info(infoMsg) query = queries[Backend.getIdentifiedDbms()].current_user.query if not kb.data.currentUser: kb.data.currentUser = unArrayizeValue(inject.getValue(query)) return kb.data.currentUser
当运行后，通过pycharm调试可以发现，query的值就是等于current_user节点的query属性的值：CURRENT_USER()
这次主要就是对代码
query = queries[Backend.getIdentifiedDbms()].current_user.query
的实现方法进行分析。
其中，有个地方需要特别注意，在节点dbms的部分子节点还含有子节点。
比如：users节点就包含inband和blind2个子节点。解决办法就是使用递归（sqlmap就是这么做的）
想通过代码：queries["MySQL"].current_db.query 来获取制定的query的值的话，需要将每个节点的信息封装到一个类中（XMLNode）
比如：MySQL节点下包含有很多的子节点，所以，XMLNode类中应该有一个容器能够用来保存所有的子节点的信息。
XMLNode类的代码如下：
class XMLNode: def __init__(self,parent,node): self._node = node self._nodeName = node.nodeName self._childrenByName= {} parentDict = parent._childrenByName nodeName = node.nodeName if not parentDict.has_key(nodeName): parentDict[nodeName] = self else: if isinstance(parentDict[nodeName],XMLNode): parentDict[nodeName] = [parentDict[nodeName]] parentDict[nodeName].append(self) self._value = None if isinstance(node, xml.dom.minidom.Text): self._type = "text" self._value = "" elif isinstance(node, xml.dom.minidom.Element): self._type = "node" elif isinstance(node, xml.dom.minidom.Comment): self._type = "comment" self._value = node.nodeValue for child in node.childNodes: XMLNode(self,child) def __getattr__(self, attr): if self._type in ['text', 'comment']: return None if self._node.hasAttribute(attr): return self._node.getAttribute(attr) elif self._childrenByName.has_key(attr): return self._childrenByName[attr]
其中，变量_childrenByName保存着某个节点的子节点信息
if not parentDict.has_key(nodeName): parentDict[nodeName] = self
注：parentDict表示当前节点的父节点_childrenByName值
比如：当前正递归到MySQL节点的current_user节点，此时，nodeName=current_user，self表示current_user节点的信息，由于此时
parentDict.has_key(nodeName)的执行结果为False，所以就将current_user节点的信息（self）赋值给parentDict[nodeName]
另外，如果当前节点的父节点已经包含有nodeName属性值的时候
比如：root节点下有9个dbms节点，当递归遍历dbms节点的时候，由于每个dbms节点的nodeName都是等于dbms，所以此时，应该将后续的dbms节点append进去。
当有多一个相同名字的子节点的时候，sqlmap中是使用list来存储的，代码如下所示：
if isinstance(parentDict[nodeName],XMLNode): parentDict[nodeName] = [parentDict[nodeName]] parentDict[nodeName].append(self)
递归遍历可以通过以下代码来实现：
for child in node.childNodes: XMLNode(self,child)
至此，queries["MySQL"].current_db.query的实现基本上差不多了，只是我们想通过.current_db.query来访问的话，我们还需要另外添加一个__getattr__函数
def __getattr__(self, attr): if self._type in ['text', 'comment']: return None if self._node.hasAttribute(attr): return self._node.getAttribute(attr) elif self._childrenByName.has_key(attr): return self._childrenByName[attr]
代码很简单，当要访问的节点类型为文本节点时（comment和text的时候），由于文本节点并没有hasAttribute()方法，所以简单的返回None(详细的可以参考sqlmap源码，我这是精简版的，^_^)
比如：元素节点dbms含有value属性值，dbms节点的子节点基本都有query属性值
当执行queries["MySQL"].current_db.query的时候，由于queries["MySQL"].current_db的类型为XMLNode，所以通过点号（.）来获取query属性值的时候，就会调用__getattr__函数，进而通过self._node.getAttribute(attr)来返回节点的query值。
另外，当执行代码：queries["MySQL"].current_db的时候，由于每个元素节点中，并没有current_db属性，所以就会跳转到
elif self._childrenByName.has_key(attr): return self._childrenByName[attr]
之前，我们已经通过递归遍历，将各个节点的信息以nodeName为下标，self（当前节点的XMLNode对象）为值保存起来了
具体就是以下代码：
if not parentDict.has_key(nodeName): parentDict[nodeName] = self else: if isinstance(parentDict[nodeName],XMLNode): parentDict[nodeName] = [parentDict[nodeName]] parentDict[nodeName].append(self)
完整代码
index.py
from xmlobject.xmltest import XMLFile from xmlobject.xmltest import XMLNode queries = {} def main(): xml = XMLFile(path = "queries.xml") """Type 1""" for node in xml.root.dbms: queries[node.value] = node print queries["MySQL"].current_db.query """Type 2""" for node in xml.root.dbms: print "*"*20+str(node.value)+"*"*20 for _ in node._childrenByName: if isinstance(node._childrenByName[_],XMLNode): nodeName = node._childrenByName[_]._nodeName query = node._childrenByName[_].query print "[%s] %s"%(nodeName,query) if __name__ =="__main__": main()
xmltest.py
import xml.dom.minidom class XMLFile: def __init__(self,**kwargs): path = kwargs.get("path",None) self._childrenByName = {} dom = xml.dom.minidom.parse(path) root = dom.documentElement for node in dom.childNodes: childnode = XMLNode(self,node) if root == node: self.root = childnode class XMLNode: def __init__(self,parent,node): self._node = node self._nodeName = node.nodeName self._childrenByName= {} parentDict = parent._childrenByName nodeName = node.nodeName if not parentDict.has_key(nodeName): parentDict[nodeName] = self else: if isinstance(parentDict[nodeName],XMLNode): parentDict[nodeName] = [parentDict[nodeName]] parentDict[nodeName].append(self) self._value = None if isinstance(node, xml.dom.minidom.Text): self._type = "text" self._value = "" elif isinstance(node, xml.dom.minidom.Element): self._type = "node" elif isinstance(node, xml.dom.minidom.Comment): self._type = "comment" self._value = node.nodeValue for child in node.childNodes: XMLNode(self,child) def __getattr__(self, attr): if self._type in ['text', 'comment']: return None if self._node.hasAttribute(attr): return self._node.getAttribute(attr) elif self._childrenByName.has_key(attr): return self._childrenByName[attr]
在分析代码的过程中，发现pycharm的调试功能很强大，帮了我不少忙，也推荐大家使用下
Pycharm下断调试：http://blog.csdn.net/chenggong2dm/article/details/9368641
注：Pycharm支持下条件断点的
作 者：曾是土木人
