libmysqlfs.c 4.75 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
 *
 * 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
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
 */
#include "libmysqlfs.h"

int search_and_replace(char *search, char* replace, char* string)
{
   char buff[1024];
   int found=0;
   char *ptr1;
   const char *ptr2=buff;
   char *strptr=string;

   DBUG_ENTER("search_and_replace");
   DBUG_PRINT("enter",("search: '%s'  replace:'%s'  string:'%s'",search,replace,string));
   strcpy(buff,string);
   while(ptr1=strstr(ptr2,search))
   {
      strncpy(strptr,ptr2,ptr1-buff);
      strptr+=ptr1-buff;
      ptr2+=ptr1-buff+strlen(search);
      strcpy(strptr,replace);
      strptr+=strlen(replace);
      found++;
   }
   DBUG_RETURN(found);
}

int show_functions(char *b, function_type type)
{
   int i=0,j=0; 
   struct func_st func;
   DBUG_ENTER("show_functions");
   get_dynamic(&functions_array,(gptr)&func,i);
   while(func.length) {
      if (func.type == type) 
        strcpy(&b[j++*BUFLEN],func.filename);
      get_dynamic(&functions_array,(gptr)&func,++i);
   }
   DBUG_RETURN(j);
}

struct func_st * check_if_function(char *name, function_type type)
{
   int pathlen;
   int j,i=0, len;
   static struct func_st function;
   char buffer[BUFLEN];

   DBUG_ENTER("check_if_function");
   DBUG_PRINT("enter",("name: '%s' type: '%d'", name, type));
   pathlen=strlen(name);

   /* We try to compare last element in path to function names */
   get_dynamic(&functions_array,(gptr)&function,i);
   while(function.length) {
      function.continuous ? 
                      (j=!strncasecmp(function.filename, name, function.length))
                      : (j=!strcasecmp(function.filename,name));
      if(j) { /* This happens when function was matched */
        DBUG_PRINT("info",("Function %s detected!",function.filename));
        break;
      }
      get_dynamic(&functions_array,(gptr)&function,++i);
   }

   /* Copy path to buffer and trip function name (if found) from it */   
   if(function.length != 0)
   {
      DBUG_RETURN(&function);
   } else {
      DBUG_RETURN(0);
   }
}

/*
 * parse - splits "path" into different variables
 * in way "/server/database/table/(field|key)/(value|function)". If path is shorter, 
 * then other fields will be NULL. If path is longer than four levels or
 * shorter than one level, FS_NOTEXIST is returned.
 */
int parse(const char * path, char *server, char * database, char *table, 
                char* field, char* value, struct func_st **funce)
{
   char buffer[BUFLEN];
   char *p=buffer;
   char *x;
   int len;

   DBUG_ENTER("parse");
   DBUG_PRINT("enter",("path: '%s'", path));

   *server=*database=*table=*field=*value='\0';

   /* Search for first slash and drop it */
   strcpy(buffer,path);
   x=strtok_r(p,"/",&p);
   if(x)
   {
     strcpy(server,x); /* First argument is server name */
     if(*p)
        strcpy(database,strtok_r(p,"/",&p)); /* Second is database */
     if(p && *p) 
        strcpy(table   ,strtok_r(p,"/",&p)); /* Third is table name */
     if(p && *p) 
        strcpy(field   ,strtok_r(p,"/",&p)); /* Fourth is field or key name */
     if(p && *p) 
        strcpy(value   ,strtok_r(p,"/",&p)); /* Fifth is field/key value or function */
   }

   /* We have to find if last argument is function, 
    * In which case we clear it
    */
   if(*value) {
      *funce=check_if_function(value,VALUE_FUNCTION);
      if(*funce) *value='\0';
   } else if (*field) {
      *funce=check_if_function(field,FIELD_FUNCTION);
      if(*funce) *field='\0';
   } else if (*table) {
      *funce=check_if_function(table,TABLE_FUNCTION);
      if(*funce) *table='\0';
   } else if (*database) {
      *funce=check_if_function(database,DATABASE_FUNCTION);
      if(*funce) *database='\0';
   } else if (*server) {
      *funce=check_if_function(server,SERVER_FUNCTION);
      if(*funce) *server='\0';
   } else
      *funce=NULL;
unknown's avatar
unknown committed
144

145 146 147 148 149 150 151
   DBUG_PRINT("info",("path: '%s', server: '%s', db: '%s', table: '%s', field: '%s', value: '%s', function: '%x'",
                   buffer, server, database, table, field, value, funce )); 
   if(p && *p) /* Something is in buffer - too deep in levels */
     DBUG_RETURN(-1)
   else
     DBUG_RETURN(0)
}