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/*
* Copyright 1999-2006 University of Chicago
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "globus_xio.h"
#include "globus_xio_tcp_driver.h"
#include "globus_xio_gsi.h"
#include "globus_gfork.h"
#include "gfs_i_gfork_plugin.h"
#ifdef __GNUC__
#define GlobusDynClientFuncName(func) static const char * _dyn_func_name __attribute__((__unused__)) = #func
#else
#define GlobusDynClientFuncName(func) static const char * _dyn_func_name = #func
#endif
#define GlobusDynClientError(error_msg, _type) \
globus_error_put( \
globus_error_construct_error( \
NULL, \
NULL, \
_type, \
__FILE__, \
_dyn_func_name, \
__LINE__, \
"%s", \
(error_msg)))
enum
{
GLOBUS_DYNCLIENT_ERROR_PARM = 1
};
static globus_bool_t g_quiet = GLOBUS_FALSE;
static globus_bool_t g_use_gsi;
static globus_xio_handle_t g_xio_handle;
static uint32_t g_at_once = 0;
static uint32_t g_total_cons = 0;
static globus_xio_driver_t g_tcp_driver;
static globus_xio_driver_t g_gsi_driver;
static
globus_result_t
gfs_l_dynclient_master_options(
int argc,
char ** argv);
static
void
gfs_l_dynclient_log(
globus_result_t result,
int level,
char * fmt,
...)
{
va_list ap;
if(g_quiet)
{
return;
}
va_start(ap, fmt);
fprintf(stderr, "[gridftp gfork plugin] : ");
if(result != GLOBUS_SUCCESS)
{
char * err_str = globus_error_print_friendly(
globus_error_peek(result));
fprintf(stderr, "ERROR : %s : ", err_str);
globus_free(err_str);
}
vfprintf(stderr, fmt, ap);
va_end(ap);
fflush(stderr);
}
static
globus_result_t
gfs_l_dynclient_xio_setup()
{
globus_result_t result;
globus_xio_attr_t attr;
globus_xio_stack_t stack;
result = globus_xio_attr_init(&attr);
if(result != GLOBUS_SUCCESS)
{
goto error_attr_init;
}
result = globus_xio_stack_init(&stack, NULL);
if(result != GLOBUS_SUCCESS)
{
goto error_stack_init;
}
result = globus_xio_driver_load("tcp", &g_tcp_driver);
if(result != GLOBUS_SUCCESS)
{
goto error_tcp;
}
result = globus_xio_stack_push_driver(stack, g_tcp_driver);
if(result != GLOBUS_SUCCESS)
{
goto error_tcp_push;
}
if(g_use_gsi)
{
result = globus_xio_driver_load("gsi", &g_gsi_driver);
if(result != GLOBUS_SUCCESS)
{
goto error_gsi;
}
result = globus_xio_stack_push_driver(stack, g_gsi_driver);
if(result != GLOBUS_SUCCESS)
{
goto error_gsi_push;
}
}
result = globus_xio_handle_create(&g_xio_handle, stack);
if(result != GLOBUS_SUCCESS)
{
goto error_handle;
}
return GLOBUS_SUCCESS;
error_handle:
error_gsi_push:
error_gsi:
error_tcp_push:
error_tcp:
error_stack_init:
error_attr_init:
return result;
}
int
main(
int argc,
char ** argv)
{
globus_result_t result;
int rc;
globus_byte_t buffer[GF_DYN_PACKET_LEN];
uint32_t tmp32;
char * be_cs;
char * reg_cs;
globus_size_t nbytes;
rc = globus_module_activate(GLOBUS_XIO_MODULE);
if(rc != 0)
{
goto error_activate;
}
result = gfs_l_dynclient_master_options(argc, argv);
if(result != GLOBUS_SUCCESS)
{
goto error_opts;
}
if(argc < 3)
{
fprintf(stderr, "%s [options] <backend contact string>"
" <frontend contact string>\n", argv[0]);
fprintf(stderr, "Use -help for more information\n");
exit(0);
}
be_cs = argv[argc - 2];
reg_cs = argv[argc - 1];
result = gfs_l_dynclient_xio_setup();
if(result != GLOBUS_SUCCESS)
{
goto error_xio;
}
memset(buffer, '\0', GF_DYN_PACKET_LEN);
buffer[GF_VERSION_NDX] = GF_VERSION;
buffer[GF_MSG_TYPE_NDX] = GFS_GFORK_MSG_TYPE_DYNBE;
tmp32 = htonl(g_at_once);
memcpy(&buffer[GF_DYN_AT_ONCE_NDX], &tmp32, sizeof(uint32_t));
tmp32 = htonl(g_total_cons);
memcpy(&buffer[GF_DYN_TOTAL_NDX], &tmp32, sizeof(uint32_t));
tmp32 = htonl(1);
memcpy(&buffer[GF_DYN_ENTRY_COUNT_NDX], &tmp32, sizeof(uint32_t));
strncpy(&buffer[GF_DYN_CS_NDX], be_cs, GF_DYN_CS_LEN);
result = globus_xio_open(g_xio_handle, reg_cs, NULL);
if(result != GLOBUS_SUCCESS)
{
goto error_open;
}
result = globus_xio_write(
g_xio_handle, buffer,
GF_DYN_PACKET_LEN, GF_DYN_PACKET_LEN, &nbytes, NULL);
if(result != GLOBUS_SUCCESS)
{
goto error_write;
}
/* read reply */
result = globus_xio_read(
g_xio_handle, buffer,
GF_DYN_PACKET_LEN, GF_DYN_PACKET_LEN, &nbytes, NULL);
if(result != GLOBUS_SUCCESS)
{
gfs_l_dynclient_log(GLOBUS_SUCCESS, 0,
"Read failed\n");
goto error_read;
}
result = globus_xio_close(g_xio_handle, NULL);
if(result != GLOBUS_SUCCESS)
{
gfs_l_dynclient_log(GLOBUS_SUCCESS, 0,
"Close failed\n");
goto error_close;
}
gfs_l_dynclient_log(GLOBUS_SUCCESS, 1,
"proper net commication with %s\n",
reg_cs);
if(buffer[GF_MSG_TYPE_NDX] == GFS_GFORK_MSG_TYPE_ACK)
{
gfs_l_dynclient_log(GLOBUS_SUCCESS, 0,
"SUCCESS: registered %s to %s",
be_cs, reg_cs);
rc = 0;
}
else
{
gfs_l_dynclient_log(GLOBUS_SUCCESS, 0,
"ERROR: %s rejected registration of %s",
reg_cs, be_cs);
rc = 1;
}
return rc;
error_close:
error_read:
error_write:
error_open:
error_xio:
error_opts:
error_activate:
gfs_l_dynclient_log(result, 0, "");
return 2;
}
static
globus_result_t
gfs_l_dynclient_opts_max(
globus_options_handle_t opts_handle,
char * cmd,
char ** opt,
void * arg,
int * out_parms_used)
{
int sc;
int max;
GlobusDynClientFuncName(gfs_l_dynclient_opts_max);
sc = sscanf(opt[0], "%u", &max);
if(sc != 1)
{
goto error;
}
*out_parms_used = 1;
g_at_once = max;
return GLOBUS_SUCCESS;
error:
return GlobusDynClientError(
"max be an integer",
GLOBUS_DYNCLIENT_ERROR_PARM);
return GLOBUS_SUCCESS;
}
static
globus_result_t
gfs_l_dynclient_opts_total(
globus_options_handle_t opts_handle,
char * cmd,
char ** opt,
void * arg,
int * out_parms_used)
{
int sc;
int con;
GlobusDynClientFuncName(gfs_l_dynclient_opts_max);
sc = sscanf(opt[0], "%u", &con);
if(sc != 1)
{
goto error;
}
*out_parms_used = 1;
g_total_cons = con;
return GLOBUS_SUCCESS;
error:
return GlobusDynClientError(
"The total must be an integer",
GLOBUS_DYNCLIENT_ERROR_PARM);
return GLOBUS_SUCCESS;
}
static
globus_result_t
gfs_l_dynclient_opts_help(
globus_options_handle_t opts_handle,
char * cmd,
char ** opt,
void * arg,
int * out_parms_used)
{
globus_options_help(opts_handle);
printf("Dynamic client program\n");
exit(0);
return GLOBUS_SUCCESS;
}
static
globus_result_t
gfs_l_dynclient_opts_quiet(
globus_options_handle_t opts_handle,
char * cmd,
char ** opt,
void * arg,
int * out_parms_used)
{
g_quiet = GLOBUS_TRUE;
return GLOBUS_SUCCESS;
}
static
globus_result_t
gfs_l_dynclient_opts_gsi(
globus_options_handle_t opts_handle,
char * cmd,
char ** opt,
void * arg,
int * out_parms_used)
{
globus_bool_t b = GLOBUS_FALSE;
if(strcasecmp(opt[0], "t") == 0 ||
strcasecmp(opt[0], "y") == 0 ||
strcasecmp(opt[0], "yes") == 0 ||
strcasecmp(opt[0], "true") == 0)
{
b = GLOBUS_TRUE;
}
g_use_gsi = b;
*out_parms_used = 1;
return GLOBUS_SUCCESS;
}
globus_options_entry_t gfork_l_opts_table[] =
{
{"quiet", "q", NULL, NULL,
"print no output",
0, gfs_l_dynclient_opts_quiet},
{"help", "h", NULL, NULL,
"print the help message",
0, gfs_l_dynclient_opts_help},
{"gsi", "G", NULL, "<bool>",
"Enable or disable GSI. Default is on.",
1, gfs_l_dynclient_opts_gsi},
{"total", "t", NULL, "<int>",
"set the maximum total number of connections allowed to the backend",
1, gfs_l_dynclient_opts_total},
{"max", "m", NULL, "<int>",
"set the maximum number of connections allowed to the backend at one time",
1, gfs_l_dynclient_opts_max},
{NULL, NULL, NULL, NULL, NULL, 0, NULL}
};
static
globus_result_t
gfs_l_dynclient_master_opts_unknown(
globus_options_handle_t opts_handle,
void * unknown_arg,
int argc,
char ** argv)
{
return GLOBUS_SUCCESS;
}
static
globus_result_t
gfs_l_dynclient_master_options(
int argc,
char ** argv)
{
globus_options_handle_t opt_h;
globus_result_t result;
globus_options_init(
&opt_h, gfs_l_dynclient_master_opts_unknown, NULL);
globus_options_add_table(opt_h, gfork_l_opts_table, NULL);
result = globus_options_command_line_process(opt_h, argc, argv);
if(result != GLOBUS_SUCCESS)
{
goto error;
}
return GLOBUS_SUCCESS;
error:
return result;
}
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