root/sapi/fpm/fpm/fpm_php.c

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DEFINITIONS

This source file includes following definitions.
  1. fpm_php_zend_ini_alter_master
  2. fpm_php_disable
  3. fpm_php_apply_defines_ex
  4. fpm_php_apply_defines
  5. fpm_php_set_allowed_clients
  6. fpm_php_set_fcgi_mgmt_vars
  7. fpm_php_script_filename
  8. fpm_php_request_uri
  9. fpm_php_request_method
  10. fpm_php_query_string
  11. fpm_php_auth_user
  12. fpm_php_content_length
  13. fpm_php_cleanup
  14. fpm_php_soft_quit
  15. fpm_php_init_main
  16. fpm_php_init_child
  17. fpm_php_limit_extensions
  18. fpm_php_get_string_from_table


        /* $Id: fpm_php.c,v 1.22.2.4 2008/12/13 03:21:18 anight Exp $ */
        /* (c) 2007,2008 Andrei Nigmatulin */

#include "fpm_config.h"

#include <stdlib.h>
#include <string.h>
#include <stdio.h>

#include "php.h"
#include "php_main.h"
#include "php_ini.h"
#include "ext/standard/dl.h"

#include "fastcgi.h"

#include "fpm.h"
#include "fpm_php.h"
#include "fpm_cleanup.h"
#include "fpm_worker_pool.h"
#include "zlog.h"

static char **limit_extensions = NULL;

static int fpm_php_zend_ini_alter_master(char *name, int name_length, char *new_value, int new_value_length, int mode, int stage TSRMLS_DC) /* {{{ */
{
        zend_ini_entry *ini_entry;
        char *duplicate;

        if (zend_hash_find(EG(ini_directives), name, name_length, (void **) &ini_entry) == FAILURE) {
                return FAILURE;
        }

        duplicate = strdup(new_value);

        if (!ini_entry->on_modify
                        || ini_entry->on_modify(ini_entry, duplicate, new_value_length,
                                ini_entry->mh_arg1, ini_entry->mh_arg2, ini_entry->mh_arg3, stage TSRMLS_CC) == SUCCESS) {
                ini_entry->value = duplicate;
                ini_entry->value_length = new_value_length;
                ini_entry->modifiable = mode;
        } else {
                free(duplicate);
        }

        return SUCCESS;
}
/* }}} */

static void fpm_php_disable(char *value, int (*zend_disable)(char *, uint TSRMLS_DC) TSRMLS_DC) /* {{{ */
{
        char *s = 0, *e = value;

        while (*e) {
                switch (*e) {
                        case ' ':
                        case ',':
                                if (s) {
                                        *e = '\0';
                                        zend_disable(s, e - s TSRMLS_CC);
                                        s = 0;
                                }
                                break;
                        default:
                                if (!s) {
                                        s = e;
                                }
                                break;
                }
                e++;
        }

        if (s) {
                zend_disable(s, e - s TSRMLS_CC);
        }
}
/* }}} */

int fpm_php_apply_defines_ex(struct key_value_s *kv, int mode) /* {{{ */
{
        TSRMLS_FETCH();

        char *name = kv->key;
        char *value = kv->value;
        int name_len = strlen(name);
        int value_len = strlen(value);

        if (!strcmp(name, "extension") && *value) {
                zval zv;
                php_dl(value, MODULE_PERSISTENT, &zv, 1 TSRMLS_CC);
                return Z_BVAL(zv) ? 1 : -1;
        }

        if (fpm_php_zend_ini_alter_master(name, name_len+1, value, value_len, mode, PHP_INI_STAGE_ACTIVATE TSRMLS_CC) == FAILURE) {
                return -1;
        }

        if (!strcmp(name, "disable_functions") && *value) {
                char *v = strdup(value);
                PG(disable_functions) = v;
                fpm_php_disable(v, zend_disable_function TSRMLS_CC);
                return 1;
        }

        if (!strcmp(name, "disable_classes") && *value) {
                char *v = strdup(value);
                PG(disable_classes) = v;
                fpm_php_disable(v, zend_disable_class TSRMLS_CC);
                return 1;
        }

        return 1;
}
/* }}} */

static int fpm_php_apply_defines(struct fpm_worker_pool_s *wp) /* {{{ */
{
        struct key_value_s *kv;

        for (kv = wp->config->php_values; kv; kv = kv->next) {
                if (fpm_php_apply_defines_ex(kv, ZEND_INI_USER) == -1) {
                        zlog(ZLOG_ERROR, "Unable to set php_value '%s'", kv->key);
                }
        }

        for (kv = wp->config->php_admin_values; kv; kv = kv->next) {
                if (fpm_php_apply_defines_ex(kv, ZEND_INI_SYSTEM) == -1) {
                        zlog(ZLOG_ERROR, "Unable to set php_admin_value '%s'", kv->key);
                }
        }

        return 0;
}

static int fpm_php_set_allowed_clients(struct fpm_worker_pool_s *wp) /* {{{ */
{
        if (wp->listen_address_domain == FPM_AF_INET) {
                fcgi_set_allowed_clients(wp->config->listen_allowed_clients);
        }
        return 0;
}
/* }}} */

#if 0 /* Comment out this non used function. It could be used later. */
static int fpm_php_set_fcgi_mgmt_vars(struct fpm_worker_pool_s *wp) /* {{{ */
{
        char max_workers[10 + 1]; /* 4294967295 */
        int len;

        len = sprintf(max_workers, "%u", (unsigned int) wp->config->pm_max_children);

        fcgi_set_mgmt_var("FCGI_MAX_CONNS", sizeof("FCGI_MAX_CONNS")-1, max_workers, len);
        fcgi_set_mgmt_var("FCGI_MAX_REQS",  sizeof("FCGI_MAX_REQS")-1,  max_workers, len);
        return 0;
}
/* }}} */
#endif

char *fpm_php_script_filename(TSRMLS_D) /* {{{ */
{
        return SG(request_info).path_translated;
}
/* }}} */

char *fpm_php_request_uri(TSRMLS_D) /* {{{ */
{
        return (char *) SG(request_info).request_uri;
}
/* }}} */

char *fpm_php_request_method(TSRMLS_D) /* {{{ */
{
        return (char *) SG(request_info).request_method;
}
/* }}} */

char *fpm_php_query_string(TSRMLS_D) /* {{{ */
{
        return SG(request_info).query_string;
}
/* }}} */

char *fpm_php_auth_user(TSRMLS_D) /* {{{ */
{
        return SG(request_info).auth_user;
}
/* }}} */

size_t fpm_php_content_length(TSRMLS_D) /* {{{ */
{
        return SG(request_info).content_length;
}
/* }}} */

static void fpm_php_cleanup(int which, void *arg) /* {{{ */
{
        TSRMLS_FETCH();
        php_module_shutdown(TSRMLS_C);
        sapi_shutdown();
}
/* }}} */

void fpm_php_soft_quit() /* {{{ */
{
        fcgi_set_in_shutdown(1);
}
/* }}} */

int fpm_php_init_main() /* {{{ */
{
        if (0 > fpm_cleanup_add(FPM_CLEANUP_PARENT, fpm_php_cleanup, 0)) {
                return -1;
        }
        return 0;
}
/* }}} */

int fpm_php_init_child(struct fpm_worker_pool_s *wp) /* {{{ */
{
        if (0 > fpm_php_apply_defines(wp) ||
                0 > fpm_php_set_allowed_clients(wp)) {
                return -1;
        }

        if (wp->limit_extensions) {
                limit_extensions = wp->limit_extensions;
        }
        return 0;
}
/* }}} */

int fpm_php_limit_extensions(char *path) /* {{{ */
{
        char **p;
        size_t path_len;

        if (!path || !limit_extensions) {
                return 0; /* allowed by default */
        }

        p = limit_extensions;
        path_len = strlen(path);
        while (p && *p) {
                size_t ext_len = strlen(*p);
                if (path_len > ext_len) {
                        char *path_ext = path + path_len - ext_len;
                        if (strcmp(*p, path_ext) == 0) {
                                return 0; /* allow as the extension has been found */
                        }
                }
                p++;
        }


        zlog(ZLOG_NOTICE, "Access to the script '%s' has been denied (see security.limit_extensions)", path);
        return 1; /* extension not found: not allowed  */
}
/* }}} */

char* fpm_php_get_string_from_table(char *table, char *key TSRMLS_DC) /* {{{ */
{
        zval **data, **tmp;
        char *string_key;
        uint string_len;
        ulong num_key;
        if (!table || !key) {
                return NULL;
        }

        /* inspired from ext/standard/info.c */

        zend_is_auto_global(table, strlen(table) TSRMLS_CC);

        /* find the table and ensure it's an array */
        if (zend_hash_find(&EG(symbol_table), table, strlen(table) + 1, (void **) &data) == SUCCESS && Z_TYPE_PP(data) == IS_ARRAY) {

                /* reset the internal pointer */
                zend_hash_internal_pointer_reset(Z_ARRVAL_PP(data));

                /* parse the array to look for our key */
                while (zend_hash_get_current_data(Z_ARRVAL_PP(data), (void **) &tmp) == SUCCESS) {
                        /* ensure the key is a string */
                        if (zend_hash_get_current_key_ex(Z_ARRVAL_PP(data), &string_key, &string_len, &num_key, 0, NULL) == HASH_KEY_IS_STRING) {
                                /* compare to our key */
                                if (!strncmp(string_key, key, string_len)) {
                                        return Z_STRVAL_PP(tmp);
                                }
                        }
                        zend_hash_move_forward(Z_ARRVAL_PP(data));
                }
        }

        return NULL;
}
/* }}} */


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