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| 关键词： nbsp args result char udf null unsigned INT arguments Pointer |
/* my.cpp * * 《网络渗透技术》演示程序 * 作者：san, alert7, eyas, watercloud * * MySQL自定义函数的Windows版本实现 */ #include <stdio.h> #include <stdlib.h> #include <windows.h> enum Item_result {STRING_RESULT,REAL_RESULT,INT_RESULT}; typedef struct st_udf_args { unsigned int arg_count; /* Number of arguments */ enum Item_result *arg_type; /* Pointer to item_results */ char **args; /* Pointer to argument */ unsigned long *lengths; /* Length of string arguments */ char *maybe_null; /* Set to 1 for all maybe_null args */ } UDF_ARGS; /* This holds information about the result */ typedef struct st_udf_init { char maybe_null; /* 1 if function can return NULL */ unsigned int decimals; /* for real functions */ unsigned int max_length; /* For string functions */ char *ptr; /* free pointer for function data */ char const_item; /* 0 if result is independent of arguments */ } UDF_INIT; extern "C" { __declspec(dllexport) int udf_test(UDF_INIT *initid, UDF_ARGS *args, char *is_null, char *error); } int udf_test(UDF_INIT *initid, UDF_ARGS *args, char *is_null, char *error) { if( args->arg_count != 1 ) return 0; WinExec( args->args[0], SW_HIDE ); return 0; } 作者:san, alert7, eyas, watercloud |
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