root/sapi/apache2handler/apache_config.c

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DEFINITIONS

This source file includes following definitions.
  1. real_value_hnd
  2. php_apache_value_handler
  3. php_apache_admin_value_handler
  4. real_flag_hnd
  5. php_apache_flag_handler
  6. php_apache_admin_flag_handler
  7. php_apache_phpini_set
  8. should_overwrite_per_dir_entry
  9. merge_php_config
  10. get_php_config
  11. apply_config
  12. destroy_php_config
  13. create_php_config

/*
   +----------------------------------------------------------------------+
   | PHP Version 5                                                        |
   +----------------------------------------------------------------------+
   | Copyright (c) 1997-2013 The PHP Group                                |
   +----------------------------------------------------------------------+
   | This source file is subject to version 3.01 of the PHP license,      |
   | that is bundled with this package in the file LICENSE, and is        |
   | available through the world-wide-web at the following url:           |
   | http://www.php.net/license/3_01.txt                                  |
   | If you did not receive a copy of the PHP license and are unable to   |
   | obtain it through the world-wide-web, please send a note to          |
   | license@php.net so we can mail you a copy immediately.               |
   +----------------------------------------------------------------------+
   | Author: Sascha Schumann <sascha@schumann.cx>                         |
   +----------------------------------------------------------------------+
 */

/* $Id$ */

#define ZEND_INCLUDE_FULL_WINDOWS_HEADERS

#include "php.h"
#include "php_ini.h"
#include "php_apache.h"

#include "apr_strings.h"
#include "ap_config.h"
#include "util_filter.h"
#include "httpd.h"
#include "http_config.h"
#include "http_request.h"
#include "http_core.h"
#include "http_protocol.h"
#include "http_log.h"
#include "http_main.h"
#include "util_script.h"
#include "http_core.h"

#ifdef PHP_AP_DEBUG
#define phpapdebug(a) fprintf a
#else
#define phpapdebug(a)
#endif

typedef struct {
        HashTable config;
} php_conf_rec;

typedef struct {
        char *value;
        size_t value_len;
        char status;
        char htaccess;
} php_dir_entry;

static const char *real_value_hnd(cmd_parms *cmd, void *dummy, const char *name, const char *value, int status)
{
        php_conf_rec *d = dummy;
        php_dir_entry e;

        phpapdebug((stderr, "Getting %s=%s for %p (%d)\n", name, value, dummy, zend_hash_num_elements(&d->config)));
        
        if (!strncasecmp(value, "none", sizeof("none"))) {
                value = "";
        }
        
        e.value = apr_pstrdup(cmd->pool, value);
        e.value_len = strlen(value);
        e.status = status;
        e.htaccess = ((cmd->override & (RSRC_CONF|ACCESS_CONF)) == 0);

        zend_hash_update(&d->config, (char *) name, strlen(name) + 1, &e, sizeof(e), NULL);
        return NULL;
}

static const char *php_apache_value_handler(cmd_parms *cmd, void *dummy, const char *name, const char *value)
{
        return real_value_hnd(cmd, dummy, name, value, PHP_INI_PERDIR);
}

static const char *php_apache_admin_value_handler(cmd_parms *cmd, void *dummy, const char *name, const char *value)
{
        return real_value_hnd(cmd, dummy, name, value, PHP_INI_SYSTEM);
}

static const char *real_flag_hnd(cmd_parms *cmd, void *dummy, const char *arg1, const char *arg2, int status)
{
        char bool_val[2];

        if (!strcasecmp(arg2, "On") || (arg2[0] == '1' && arg2[1] == '\0')) {
                bool_val[0] = '1';
        } else {
                bool_val[0] = '0';
        }
        bool_val[1] = 0;

        return real_value_hnd(cmd, dummy, arg1, bool_val, status);
}

static const char *php_apache_flag_handler(cmd_parms *cmd, void *dummy, const char *name, const char *value)
{
        return real_flag_hnd(cmd, dummy, name, value, PHP_INI_PERDIR);
}

static const char *php_apache_admin_flag_handler(cmd_parms *cmd, void *dummy, const char *name, const char *value)
{
        return real_flag_hnd(cmd, dummy, name, value, PHP_INI_SYSTEM);
}

static const char *php_apache_phpini_set(cmd_parms *cmd, void *mconfig, const char *arg)
{
        if (apache2_php_ini_path_override) {
                return "Only first PHPINIDir directive honored per configuration tree - subsequent ones ignored";
        }
        apache2_php_ini_path_override = ap_server_root_relative(cmd->pool, arg);
        return NULL;
}

static zend_bool should_overwrite_per_dir_entry(HashTable *target_ht, php_dir_entry *new_per_dir_entry, zend_hash_key *hash_key, void *pData)
{
        php_dir_entry *orig_per_dir_entry;

        if (zend_hash_find(target_ht, hash_key->arKey, hash_key->nKeyLength, (void **) &orig_per_dir_entry)==FAILURE) {
                return 1; /* does not exist in dest, copy from source */
        }

        if (new_per_dir_entry->status >= orig_per_dir_entry->status) {
                /* use new entry */
                phpapdebug((stderr, "ADDING/OVERWRITING %s (%d vs. %d)\n", hash_key->arKey, new_per_dir_entry->status, orig_per_dir_entry->status));
                return 1;
        } else {
                return 0;
        }
}


void *merge_php_config(apr_pool_t *p, void *base_conf, void *new_conf)
{
        php_conf_rec *d = base_conf, *e = new_conf, *n = NULL;
#if STAS_0
        php_dir_entry *pe;
        php_dir_entry *data;
        char *str;
        uint str_len;
        ulong num_index;
#endif

        n = create_php_config(p, "merge_php_config");
        /* copy old config */
        zend_hash_copy(&n->config, &d->config, NULL, NULL, sizeof(php_dir_entry));
        /* merge new config */
        phpapdebug((stderr, "Merge dir (%p)+(%p)=(%p)\n", base_conf, new_conf, n));
        zend_hash_merge_ex(&n->config, &e->config, NULL, sizeof(php_dir_entry), (merge_checker_func_t) should_overwrite_per_dir_entry, NULL);
#if STAS_0
        for (zend_hash_internal_pointer_reset(&d->config);
                        zend_hash_get_current_key_ex(&d->config, &str, &str_len, 
                                &num_index, 0, NULL) == HASH_KEY_IS_STRING;
                        zend_hash_move_forward(&d->config)) {
                pe = NULL;
                zend_hash_get_current_data(&d->config, (void **) &data);
                if (zend_hash_find(&n->config, str, str_len, (void **) &pe) == SUCCESS) {
                        if (pe->status >= data->status) continue;
                }
                phpapdebug((stderr, "ADDING/OVERWRITING %s (%d vs. %d)\n", str, data->status, pe?pe->status:-1));
                zend_hash_update(&n->config, str, str_len, data, sizeof(*data), NULL);
        }
#endif
        return n;
}

char *get_php_config(void *conf, char *name, size_t name_len)
{
        php_conf_rec *d = conf;
        php_dir_entry *pe;
        
        if (zend_hash_find(&d->config, name, name_len, (void **) &pe) == SUCCESS) {
                return pe->value;
        }

        return "";
}

void apply_config(void *dummy)
{
        php_conf_rec *d = dummy;
        char *str;
        uint str_len;
        php_dir_entry *data;
        
        for (zend_hash_internal_pointer_reset(&d->config);
                        zend_hash_get_current_key_ex(&d->config, &str, &str_len, NULL, 0, 
                                NULL) == HASH_KEY_IS_STRING;
                        zend_hash_move_forward(&d->config)) {
                if (zend_hash_get_current_data(&d->config, (void **) &data) == SUCCESS) {
                        phpapdebug((stderr, "APPLYING (%s)(%s)\n", str, data->value));
                        if (zend_alter_ini_entry(str, str_len, data->value, data->value_len, data->status, data->htaccess?PHP_INI_STAGE_HTACCESS:PHP_INI_STAGE_ACTIVATE) == FAILURE) {
                                phpapdebug((stderr, "..FAILED\n"));
                        }
                }
        }
}

const command_rec php_dir_cmds[] =
{
        AP_INIT_TAKE2("php_value", php_apache_value_handler, NULL, OR_OPTIONS, "PHP Value Modifier"),
        AP_INIT_TAKE2("php_flag", php_apache_flag_handler, NULL, OR_OPTIONS, "PHP Flag Modifier"),
        AP_INIT_TAKE2("php_admin_value", php_apache_admin_value_handler, NULL, ACCESS_CONF|RSRC_CONF, "PHP Value Modifier (Admin)"),
        AP_INIT_TAKE2("php_admin_flag", php_apache_admin_flag_handler, NULL, ACCESS_CONF|RSRC_CONF, "PHP Flag Modifier (Admin)"),
        AP_INIT_TAKE1("PHPINIDir", php_apache_phpini_set, NULL, RSRC_CONF, "Directory containing the php.ini file"),
        {NULL}
};

static apr_status_t destroy_php_config(void *data)
{
        php_conf_rec *d = data;

        phpapdebug((stderr, "Destroying config %p\n", data));   
        zend_hash_destroy(&d->config);

        return APR_SUCCESS;
}

void *create_php_config(apr_pool_t *p, char *dummy)
{
        php_conf_rec *newx = (php_conf_rec *) apr_pcalloc(p, sizeof(*newx));

        phpapdebug((stderr, "Creating new config (%p) for %s\n", newx, dummy));
        zend_hash_init(&newx->config, 0, NULL, NULL, 1);
        apr_pool_cleanup_register(p, newx, destroy_php_config, apr_pool_cleanup_null);
        return (void *) newx;
}

/*
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 * tab-width: 4
 * c-basic-offset: 4
 * End:
 * vim600: sw=4 ts=4 fdm=marker
 * vim<600: sw=4 ts=4
 */

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