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/*
Unix SMB/CIFS implementation.
provide hooks into C calls from esp scripts
Copyright (C) Andrew Tridgell 2005
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
#include "web_server/esp/esp.h"
#include "param/loadparm.h"
/*
return the type of a variable
*/
static int esp_typeof(struct EspRequest *ep, int argc, struct MprVar **argv)
{
const struct {
MprType type;
const char *name;
} types[] = {
{ MPR_TYPE_UNDEFINED, "undefined" },
{ MPR_TYPE_NULL, "null" },
{ MPR_TYPE_BOOL, "boolean" },
{ MPR_TYPE_CFUNCTION, "function" },
{ MPR_TYPE_FLOAT, "float" },
{ MPR_TYPE_INT, "int" },
{ MPR_TYPE_INT64, "int64" },
{ MPR_TYPE_OBJECT, "object" },
{ MPR_TYPE_FUNCTION, "function" },
{ MPR_TYPE_STRING, "string" },
{ MPR_TYPE_STRING_CFUNCTION, "function" }
};
int i;
const char *type = "unknown";
if (argc != 1) return -1;
for (i=0;i<ARRAY_SIZE(types);i++) {
if (argv[0]->type == types[i].type) {
type = types[i].name;
break;
}
}
espSetReturnString(ep, type);
return 0;
}
/*
setup a return of a string list
*/
static void esp_returnlist(struct EspRequest *ep,
const char *name, const char **list)
{
struct MprVar var;
int i;
var = mprCreateObjVar(name, ESP_HASH_SIZE);
for (i=0;list[i];i++) {
char idx[16];
struct MprVar val;
mprItoa(i, idx, sizeof(idx));
val = mprCreateStringVar(list[i], 1);
mprCreateProperty(&var, idx, &val);
}
espSetReturn(ep, var);
}
/*
return a list of defined services
*/
static int esp_lpServices(struct EspRequest *ep, int argc, char **argv)
{
int i;
const char **list;
if (argc != 0) return -1;
for (i=0;i<lp_numservices();i++) {
list = str_list_add(list, lp_servicename(i));
}
talloc_steal(ep, list);
esp_returnlist(ep, "services", list);
return 0;
}
/*
allow access to loadparm variables from inside esp scripts in swat
can be called in 4 ways:
v = lpGet("type:parm"); gets a parametric variable
v = lpGet("share", "type:parm"); gets a parametric variable on a share
v = lpGet("parm"); gets a global variable
v = lpGet("share", "parm"); gets a share variable
the returned variable is a ejs object. It is an array object for lists.
*/
static int esp_lpGet(struct EspRequest *ep, int argc, char **argv)
{
struct parm_struct *parm = NULL;
void *parm_ptr = NULL;
int i;
if (argc < 1) return -1;
if (argc == 2) {
/* its a share parameter */
int snum = lp_servicenumber(argv[0]);
if (snum == -1) {
return -1;
}
if (strchr(argv[1], ':')) {
/* its a parametric option on a share */
const char *type = talloc_strndup(ep, argv[1], strcspn(argv[1], ":"));
const char *option = strchr(argv[1], ':') + 1;
const char *value;
if (type == NULL || option == NULL) return -1;
value = lp_get_parametric(snum, type, option);
if (value == NULL) return -1;
espSetReturnString(ep, value);
return 0;
}
parm = lp_parm_struct(argv[1]);
if (parm == NULL || parm->class == P_GLOBAL) {
return -1;
}
parm_ptr = lp_parm_ptr(snum, parm);
} else if (strchr(argv[0], ':')) {
/* its a global parametric option */
const char *type = talloc_strndup(ep, argv[0], strcspn(argv[0], ":"));
const char *option = strchr(argv[0], ':') + 1;
const char *value;
if (type == NULL || option == NULL) return -1;
value = lp_get_parametric(-1, type, option);
if (value == NULL) return -1;
espSetReturnString(ep, value);
return 0;
} else {
/* its a global parameter */
parm = lp_parm_struct(argv[0]);
if (parm == NULL) return -1;
parm_ptr = parm->ptr;
}
if (parm == NULL || parm_ptr == NULL) {
return -1;
}
/* construct and return the right type of ejs object */
switch (parm->type) {
case P_STRING:
case P_USTRING:
espSetReturnString(ep, *(char **)parm_ptr);
break;
case P_BOOL:
espSetReturn(ep, mprCreateBoolVar(*(BOOL *)parm_ptr));
break;
case P_INTEGER:
espSetReturn(ep, mprCreateIntegerVar(*(int *)parm_ptr));
break;
case P_ENUM:
for (i=0; parm->enum_list[i].name; i++) {
if (*(int *)parm_ptr == parm->enum_list[i].value) {
espSetReturnString(ep, parm->enum_list[i].name);
return 0;
}
}
return -1;
case P_LIST:
esp_returnlist(ep, parm->label, *(const char ***)parm_ptr);
break;
case P_SEP:
return -1;
}
return 0;
}
/*
setup the C functions that be called from ejs
*/
void http_setup_ejs_functions(void)
{
espDefineStringCFunction(NULL, "lpGet", esp_lpGet, NULL);
espDefineStringCFunction(NULL, "lpServices", esp_lpServices, NULL);
espDefineCFunction(NULL, "typeof", esp_typeof, NULL);
}
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