libMarshall
/* $Id$ */
/* Copyright (c) 2016-2022 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS System libMarshall */
/* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#if 1 /* XXX */
# include <string.h>
# include <errno.h>
#endif
#include <dlfcn.h>
#include <System/error.h>
#include "System/Marshall.h"
#define PROGNAME "runso"
/* private */
/* prototypes */
static int _runso(char const * filename, char const * method, int argc,
char ** argv);
static int _error(char const * error, int ret);
static int _usage(void);
/* functions */
/* runso */
static int _runso_callback(char const * method, MarshallCall callback,
int argc, char ** argv);
static int _runso(char const * filename, char const * method, int argc,
char ** argv)
{
int ret = 0;
void * handler;
MarshallCall callback;
if((handler = dlopen(filename, RTLD_LAZY)) == NULL)
return _error(dlerror(), -1);
if((callback = dlsym(handler, method)) == NULL)
ret = _error(dlerror(), -1);
else
ret = _runso_callback(method, callback, argc, argv);
dlclose(handler);
return ret;
}
static int _runso_callback(char const * method, MarshallCall callback,
int argc, char ** argv)
{
int ret = 0;
Variable ** args;
Variable * v;
int i;
int32_t i32;
if((args = malloc(sizeof(*args) * argc)) == NULL)
return _error(strerror(errno), -errno);
for(i = 0; i < argc; i++)
if((args[i] = variable_new(VT_STRING, argv[i])) == NULL)
ret = -_error(error_get(NULL), 1);
if((v = variable_new(VT_INT32, &i32)) == NULL)
ret = -_error(error_get(NULL), 1);
if(ret == 0 && marshall_callp(v, callback, argc, args) != 0)
ret = -_error(error_get(NULL), 1);
else if(variable_get_as(v, VT_INT32, &i32, NULL) != 0)
ret = _error(error_get(NULL), -1);
else
printf("%s: %s returned %d\n", PROGNAME, method, i32);
if(v != NULL)
variable_delete(v);
for(i = 0; i < argc; i++)
if(args[i] != NULL)
variable_delete(args[i]);
free(args);
return ret;
}
/* error */
static int _error(char const * error, int ret)
{
fprintf(stderr, "%s: %s\n", PROGNAME, error);
return ret;
}
/* usage */
static int _usage(void)
{
/* TODO allow listing the methods available */
fputs("Usage: " PROGNAME " filename method [arguments...]\n"
" " PROGNAME " -s method [arguments...]\n"
" -s Look for callbacks inside " PROGNAME " itself\n", stderr);
return 1;
}
/* public */
/* functions */
/* main */
int main(int argc, char * argv[])
{
int o;
int self = 0;
char const * filename;
char const * method;
while((o = getopt(argc, argv, "s")) != -1)
switch(o)
{
case 's':
self = 1;
break;
default:
return _usage();
}
if(self)
filename = NULL;
else
filename = argv[optind++];
/* check usage accordingly */
if(optind >= argc)
return _usage();
method = argv[optind++];
if(_runso(filename, method, argc - optind, &argv[optind]) != 0)
return 2;
return 0;
}