SAPI EMBED Problems View as Markdown

Is this crash under Windows perchance?

Johannes Schlueter wrote:

Not without code, backtrace, etc.

johannes

Brian Fertig wrote:

I wrote an embedded application that can execute php scripts.
When the script exits and I call the php_embed_shutdown() function
it crashes. Can someone explain to me how I can keep this from
happening?

Brian

this is the code

static void php_function(switch_core_session_t *session, char *data)
{
char *uuid = switch_core_session_get_uuid(session);
uint32_t ulen = strlen(uuid);
uint32_t len = strlen((char ) data) + ulen + 2;
char mydata = switch_core_session_alloc(session, len);
int argc, retval;
char argv[5];
char php_code[1024];
void tsrm_ls = NULL;

    snprintf(mydata, len, "%s %s", uuid, data);

    argc = switch_separate_string(mydata, ' ',argv,(sizeof(argv) / 

sizeof(argv[0])));

    sprintf(php_code, "uuid=\"%s\"; include(\"%s\");\n", argv[0], 

argv[1]);
//sprintf(php_code, "include('%s');", argv[1]);

    sprintf(php_code, "%s %s", data, uuid);

    zend_file_handle script;
    script.type = ZEND_HANDLE_FP;
    script.filename = data;
    script.opened_path = NULL;
    script.free_filename = 0;
    script.handle.fp = fopen(script.filename, "rb");

    // Initialize PHPs CORE
    php_embed_init(argc, argv, &tsrm_ls);

    // Return All of the DEBUG crap to the console and/or a log file
    php_embed_module.ub_write = sapi_mod_php_ub_write;
    php_embed_module.log_message = mod_php_log_message;
    php_embed_module.sapi_error = 

(sapi_error_function_t)mod_php_error_handler;

    // Let the nice people know we are about to start their script
    switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, 

"Starting Script %s\n",data);

    // Force $uuid and $session to exist in PHPs memory space
    zval *php_uuid;
    MAKE_STD_ZVAL(php_uuid);
    //MAKE_STD_ZVAL(php_session);
    //php_uuid->type = IS_STRING;
    //php_uuid->value.str.len = strlen(uuid);
    //php_uuid->value.str.val = estrdup(uuid);
    ZVAL_STRING(php_uuid, uuid , 1);
    //ZVAL_STRING(php_session, session , 1);
    ZEND_SET_SYMBOL(&EG(symbol_table), "uuid", php_uuid);
    //ZEND_SET_SYMBOL(&EG(active_symbol_table), "session", 

php_session);

    // Force Some INI entries weather the user likes it or not

zend_alter_ini_entry("register_globals",sizeof("register_globals"),"1",
sizeof("1") - 1, PHP_INI_SYSTEM, PHP_INI_STAGE_RUNTIME);

    // Execute the bloody script
    retval = php_execute_script(&script TSRMLS_CC);

    // Clean up after PHP and such
    php_embed_shutdown(tsrm_ls);  It freaks out down here when it 

calls tsrm_shutdown() it just stops the whole server.

    // Return back to the Dialplan

// Buh bye now!
}

I wrote an embedded application that can execute php scripts.
When the script exits and I call the php_embed_shutdown() function
it crashes. Can someone explain to me how I can keep this from
happening?

Without looking into the code, crash on shutdown frequently hints on one
of the two:

1. Memory corruption
2. applying efree() to a memory block that was result of malloc() or was
   not allocated. This includes putting malloc'ed or non-allocated strings
   into zvals, etc.
   I would suggest to build PHP with --enable-debug and see if memory
   manager has something to say. Another idea would be to use valgrind if
   you are running on supported system or analogous tool if you run on
   system where valgrind does not work.