jk_config.c

Tomcat 4.1与WebServer集成组件的源代码包.

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 *                 The Apache Software License,  Version 1.1                 *
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/**
 * Common methods for processing config data. Independent of the config
 * storage ( this is a sort of base class ).
 *
 * Config is read from the storage as a map, with 'bean names' as keys
 * and a map of attributes as values.
 *
 * We'll process the map creating new objects and calling the setters, similar
 * with what we do on the java side ( see ant or tomcat  ).
 *
 * There is also support for update, based on a version number. New objects
 * or existing objects having a 'ver' attribute will have the setter methods
 * called with the new values. XXX a reconfig method may be needed to notify.
 * Backends that support notifications may update directly the changed attributes,
 * but all components must support the simpler store ( where some attributes
 * may be set multiple times, since we can't detect individual att changes ).
 *
 * Note: The current code assumes a backend that is capable of storing
 * multi-valued attributes. This makes things hard to port to registry and
 * some other repositories. 
 *
 * @author: Gal Shachor <[e-mail]>                           
 * @author: Costin Manolache
 */
 
#include "jk_global.h"
#include "jk_map.h"
#include "jk_pool.h"
#include "jk_config.h"

#define LENGTH_OF_LINE    (1024)

/** Interpret the 'name' as [OBJECT].[PROPERTY].
    If the [OBJECT] is not found, construct it using
    the prefix ( i.e. we'll search for a factory that matches
    name - XXX make it longest match ? ).

    Then set the property on the object that is found or
    constructed.

    No replacement or saving is done on the val - this is
    a private method
*/
static int jk2_config_processBeanPropertyString( jk_env_t *env,
                                                 jk_config_t *cfg,
                                                 char *propertyString,
                                                 char **objName, char **propertyName )
{
    jk_bean_t *w = NULL;
    char *type=NULL;
    char *dot=0;
    char *lastDot;
    char *lastDot1;
    
    propertyString=cfg->pool->pstrdup( env, cfg->pool, propertyString );
    
    lastDot= strrchr( propertyString, (int)'.' );
    lastDot1= strrchr( propertyString, (int)':' );

    if( lastDot1==NULL )
        lastDot1=lastDot;
    
    if( lastDot==NULL || lastDot < lastDot1 )
        lastDot=lastDot1;
    
    if( lastDot==NULL || *lastDot=='\0' ) return JK_ERR;

    *lastDot='\0';
    lastDot++;

    *objName=propertyString;
    *propertyName=lastDot;

    /*     fprintf(stderr, "ProcessBeanProperty string %s %s\n", *objName, *propertyName); */
    
    return JK_OK;
}


/** Set a property on a bean. Call this when you know the bean.
    The name and values will be saved in the config tables.
    
    @param mbean coresponds to the object beeing configured
    @param name the property to be set ( can't have '.' or ':' in it )
    @param val the value, $(property) will be replaced.
 */
int jk2_config_setProperty(jk_env_t *env, jk_config_t *cfg,
                           jk_bean_t *mbean, char *name, char *val)
{
    char *pname;
    int multiValue=JK_FALSE;
    
    if( mbean == cfg->mbean ) {
        pname=name;
    } else {
        /* Make substitution work for ${OBJ_NAME.PROP} */
        pname=cfg->pool->calloc( env, cfg->pool,
                                 strlen( name ) + strlen( mbean->name ) + 4 );
        strcpy( pname, mbean->name );
        strcat( pname, "." );
        strcat( pname, name );
    }
    
    name= cfg->pool->pstrdup( env, cfg->pool, name );
    val= cfg->pool->pstrdup( env, cfg->pool, val );

    if (strlen(name) && *name == '$') {
        cfg->map->put(env, cfg->map, name + 1, val, NULL);
        return JK_OK;
    }

    /** Save it on the config. XXX no support for deleting yet */
    /* The _original_ value. Will be saved with $() in it */
    if( mbean->settings == NULL )
        jk2_map_default_create(env, &mbean->settings, cfg->pool);
    
    if( mbean->multiValueInfo != NULL ) {
        int i;
        for( i=0; i<64; i++ ) {
            if(mbean->multiValueInfo[i]== NULL)
                break;
            if( strcmp( name, mbean->multiValueInfo[i])==0 ) {
                multiValue=JK_TRUE;
                break;
            }
        }
    }

    if( multiValue ) {
        mbean->settings->add( env, mbean->settings, name, val );
    } else {
        mbean->settings->put( env, mbean->settings, name, val, NULL );
    }

    /* Call the 'active' setter
     */
    val = jk2_config_replaceProperties(env, cfg->map, cfg->map->pool, val);

    /* fprintf( stderr, "config.setProperty2 %s %s %s \n", mbean->name, name, val ); */
    
    /** Used for future replacements
     */
    if( multiValue ) {
        cfg->map->add( env, cfg->map, pname, val );
    } else {
        cfg->map->put( env, cfg->map, pname, val, NULL );
    }
    
    if( cfg->mbean->debug > 0 )
        env->l->jkLog( env, env->l, JK_LOG_DEBUG, "config: set %s / %s / %#lx / %s = %s\n",
                       mbean->name, name, mbean, pname, val);
    
    if( strcmp( name, "name" ) == 0 ) {
        return JK_OK;
    }
    if( strcmp( name, "ver" ) == 0 ) {
        mbean->ver=atol(val);
        return JK_OK;
    }
    if( strcmp( name, "debug" ) == 0 ) {
        mbean->debug=atoi( val );
        if(mbean->setAttribute) {
            mbean->setAttribute( env, mbean, name, val );
        }
        return JK_OK;
    }
    if( strcmp( name, "disabled" ) == 0 ) {
        mbean->disabled=atoi( val );
        if(mbean->setAttribute) {
            mbean->setAttribute( env, mbean, name, val );
        }
        return JK_OK;