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/* Copyright (C) 2009 The Android Open Source Project
**
** This software is licensed under the terms of the GNU General Public
** License version 2, as published by the Free Software Foundation, and
** may be copied, distributed, and modified under those terms.
**
** 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.
*/
#include "android/boot-properties.h"
#include "android/utils/debug.h"
#include "android/utils/system.h"
#include "android/hw-qemud.h"
#include "android/globals.h"
#define D(...) VERBOSE_PRINT(init,__VA_ARGS__)
/* define T_ACTIVE to 1 to debug transport communications */
#define T_ACTIVE 0
#if T_ACTIVE
#define T(...) VERBOSE_PRINT(init,__VA_ARGS__)
#else
#define T(...) ((void)0)
#endif
/* this code supports the list of system properties that will
* be set on boot in the emulated system.
*/
typedef struct BootProperty {
struct BootProperty* next;
char* property;
int length;
} BootProperty;
static BootProperty*
boot_property_alloc( const char* name, int namelen,
const char* value, int valuelen )
{
int length = namelen + 1 + valuelen;
BootProperty* prop = android_alloc( sizeof(*prop) + length + 1 );
char* p;
prop->next = NULL;
prop->property = p = (char*)(prop + 1);
prop->length = length;
memcpy( p, name, namelen );
p += namelen;
*p++ = '=';
memcpy( p, value, valuelen );
p += valuelen;
*p = '\0';
return prop;
}
static BootProperty* _boot_properties;
static BootProperty** _boot_properties_tail = &_boot_properties;
static int _inited;
int
boot_property_add2( const char* name, int namelen,
const char* value, int valuelen )
{
BootProperty* prop;
/* check the lengths
*/
if (namelen > PROPERTY_MAX_NAME)
return -1;
if (valuelen > PROPERTY_MAX_VALUE)
return -2;
/* check that there are not invalid characters in the
* property name
*/
const char* reject = " =$*?'\"";
int nn;
for (nn = 0; nn < namelen; nn++) {
if (strchr(reject, name[nn]) != NULL)
return -3;
}
/* init service if needed */
if (!_inited) {
boot_property_init_service();
_inited = 1;
}
D("Adding boot property: '%.*s' = '%.*s'",
namelen, name, valuelen, value);
/* add to the internal list */
prop = boot_property_alloc(name, namelen, value, valuelen);
*_boot_properties_tail = prop;
_boot_properties_tail = &prop->next;
return 0;
}
int
boot_property_add( const char* name, const char* value )
{
int namelen = strlen(name);
int valuelen = strlen(value);
return boot_property_add2(name, namelen, value, valuelen);
}
#define SERVICE_NAME "boot-properties"
static void
boot_property_client_recv( void* opaque,
uint8_t* msg,
int msglen,
QemudClient* client )
{
/* the 'list' command shall send all boot properties
* to the client, then close the connection.
*/
if (msglen == 4 && !memcmp(msg, "list", 4)) {
BootProperty* prop;
for (prop = _boot_properties; prop != NULL; prop = prop->next) {
qemud_client_send(client, (uint8_t*)prop->property, prop->length);
}
qemud_client_close(client);
return;
}
/* unknown command ? */
D("%s: ignoring unknown command: %.*s", __FUNCTION__, msglen, msg);
}
static QemudClient*
boot_property_service_connect( void* opaque,
QemudService* serv,
int channel )
{
QemudClient* client;
client = qemud_client_new( serv, channel, NULL,
boot_property_client_recv,
NULL );
qemud_client_set_framing(client, 1);
return client;
}
void
boot_property_init_service( void )
{
if (!_inited) {
QemudService* serv = qemud_service_register( SERVICE_NAME,
1, NULL,
boot_property_service_connect );
if (serv == NULL) {
derror("could not register '%s' service", SERVICE_NAME);
return;
}
D("registered '%s' qemud service", SERVICE_NAME);
}
}
void
boot_property_parse_option( const char* param )
{
char* q = strchr(param,'=');
const char* name;
const char* value;
int namelen, valuelen, ret;
if (q == NULL) {
dwarning("boot property missing (=) separator: %s", param);
return;
}
name = param;
namelen = q - param;
value = q+1;
valuelen = strlen(name) - (namelen+1);
ret = boot_property_add2(name, namelen, value, valuelen);
if (ret < 0) {
switch (ret) {
case -1:
dwarning("boot property name too long: '%.*s'",
namelen, name);
break;
case -2:
dwarning("boot property value too long: '%.*s'",
valuelen, value);
break;
case -3:
dwarning("boot property name contains invalid chars: %.*s",
namelen, name);
break;
}
}
}
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