mpv/loader/registry.c

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8.4 KiB
C
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#include <config.h>
#include <stdio.h>
#include <fcntl.h>
#include <pwd.h>
#include <sys/types.h>
#include <wine/winbase.h>
#include <wine/winreg.h>
#include <wine/winnt.h>
#include <wine/winerror.h>
#include <registry.h>
struct reg_value
{
int type;
char* name;
int len;
char* value;
};
static int reg_size=0;
static struct reg_value* regs=0;
struct reg_handle_s;
typedef struct reg_handle_s
{
int handle;
char* name;
struct reg_handle_s* next;
struct reg_handle_s* prev;
} reg_handle_t;
static reg_handle_t* head=0;
#define DIR -25
static void create_registry();
static void open_registry();
static void save_registry();
static void create_registry(){
if(regs)
{
printf("Logic error: create_registry() called with existing registry\n");
save_registry();
return;
}
regs=(struct reg_value*)malloc(3*sizeof(struct reg_value));
regs[0].type=regs[1].type=DIR;
regs[0].name=(char*)malloc(5);
strcpy(regs[0].name, "HKLM");
regs[1].name=(char*)malloc(5);
strcpy(regs[1].name, "HKCU");
regs[0].value=regs[1].value=NULL;
regs[0].len=regs[1].len=0;
reg_size=2;
save_registry();
}
static void open_registry()
{
int fd;
int i;
int len;
struct passwd* pwent;
char* pathname;
if(regs)
{
printf("Multiple open_registry(>\n");
return;
}
pwent=getpwuid(getuid());
pathname=(char*)malloc(strlen(pwent->pw_dir)+20);
strcpy(pathname, pwent->pw_dir);
strcat(pathname, "/.registry");
fd=open(pathname, O_RDONLY);
free(pathname);
if(fd==-1)
{
printf("Creating new registry\n");
create_registry();
return;
}
read(fd, &reg_size, 4);
regs=(struct reg_value*)malloc(reg_size*sizeof(struct reg_value));
for(i=0; i<reg_size; i++)
{
read(fd,&regs[i].type,4);
read(fd,&len,4);
regs[i].name=(char*)malloc(len+1);
if(regs[i].name==0)
{
reg_size=i+1;
goto error;
}
read(fd, regs[i].name, len);
regs[i].name[len]=0;
read(fd,&regs[i].len,4);
regs[i].value=(char*)malloc(regs[i].len+1);
if(regs[i].value==0)
{
free(regs[i].name);
reg_size=i+1;
goto error;
}
read(fd, regs[i].value, regs[i].len);
regs[i].value[regs[i].len]=0;
}
error:
close(fd);
return;
}
static void save_registry()
{
int fd, i, len;
struct passwd* pwent;
char* pathname;
pwent=getpwuid(getuid());
pathname=(char*)malloc(strlen(pwent->pw_dir)+20);
strcpy(pathname, pwent->pw_dir);
strcat(pathname, "/.registry");
fd=open(pathname, O_WRONLY | O_CREAT, 00777);
free(pathname);
if(fd==-1)
{
printf("Failed to open registry file for writing.\n");
return;
}
write(fd, &reg_size, 4);
for(i=0; i<reg_size; i++)
{
write(fd, &regs[i].type, 4);
len=strlen(regs[i].name);
write(fd, &len, 4);
write(fd, regs[i].name, len);
write(fd, &regs[i].len, 4);
write(fd, regs[i].value, regs[i].len);
}
close(fd);
}
static reg_handle_t* find_handle_by_name(const char* name)
{
reg_handle_t* t;
// printf("REGISTRY: find_handle_by_name(%s)\n",name);
for(t=head; t; t=t->prev)
{
if(!strcmp(t->name, name))
{
return t;
}
}
return 0;
}
static struct reg_value* find_value_by_name(const char* name)
{
int i;
// printf("REGISTRY: find_value_by_name(%s)\n",name);
for(i=0; i<reg_size; i++)
if(!strcmp(regs[i].name, name))
return regs+i;
return 0;
}
static reg_handle_t* find_handle(int handle)
{
reg_handle_t* t;
// printf("REGISTRY: find_handle(%d)\n",handle);
for(t=head; t; t=t->prev)
{
if(t->handle==handle)
{
return t;
}
}
return 0;
}
static int generate_handle()
{
static int zz=249;
zz++;
while((zz==HKEY_LOCAL_MACHINE) || (zz==HKEY_CURRENT_USER))
zz++;
return zz;
}
static reg_handle_t* insert_handle(long handle, const char* name)
{
reg_handle_t* t;
t=(reg_handle_t*)malloc(sizeof(reg_handle_t));
if(head==0)
{
t->prev=0;
}
else
{
head->next=t;
t->prev=head;
}
t->next=0;
t->name=(char*)malloc(strlen(name)+1);
strcpy(t->name, name);
t->handle=handle;
head=t;
return t;
}
static char* build_keyname(long key, const char* subkey)
{
char* full_name;
reg_handle_t* t;
if((t=find_handle(key))==0)
{
TRACE("Invalid key\n");
return NULL;
}
if(subkey==NULL)
subkey="<default>";
full_name=(char*)malloc(strlen(t->name)+strlen(subkey)+10);
strcpy(full_name, t->name);
strcat(full_name, "\\");
strcat(full_name, subkey);
return full_name;
}
struct reg_value* insert_reg_value(int handle, const char* name, int type, const void* value, int len)
{
reg_handle_t* t;
struct reg_value* v;
char* fullname;
if((fullname=build_keyname(handle, name))==NULL)
{
TRACE("Invalid handle\n");
return NULL;
}
if((v=find_value_by_name(fullname))==0)
//creating new value in registry
{
if(regs==0)
create_registry();
regs=(struct reg_value*)realloc(regs, sizeof(struct reg_value)*(reg_size+1));
v=regs+reg_size;
reg_size++;
}
else
//replacing old one
{
free(v->value);
free(v->name);
}
v->type=type;
v->len=len;
v->value=(char*)malloc(len);
memcpy(v->value, value, len);
v->name=(char*)malloc(strlen(fullname)+1);
strcpy(v->name, fullname);
save_registry();
return v;
}
static void init_registry()
{
// printf("Initializing registry\n");
open_registry();
insert_handle(HKEY_LOCAL_MACHINE, "HKLM");
insert_handle(HKEY_CURRENT_USER, "HKCU");
}
static reg_handle_t* find_handle_2(long key, const char* subkey)
{
char* full_name;
reg_handle_t* t;
if((t=find_handle(key))==0)
{
TRACE("Invalid key\n");
return (reg_handle_t*)-1;
}
if(subkey==NULL)
return t;
full_name=(char*)malloc(strlen(t->name)+strlen(subkey)+10);
strcpy(full_name, t->name);
strcat(full_name, "\\");
strcat(full_name, subkey);
t=find_handle_by_name(full_name);
free(full_name);
return t;
}
long RegOpenKeyExA(long key, const char* subkey, long reserved, long access, int* newkey)
{
char* full_name;
reg_handle_t* t;
struct reg_value* v;
TRACE("Opening key %s\n", subkey);
if(!regs)
init_registry()
;
/* t=find_handle_2(key, subkey);
if(t==0)
return -1;
if(t==(reg_handle_t*)-1)
return -1;
*/ full_name=build_keyname(key, subkey);
if(!full_name)
return -1;
v=find_value_by_name(full_name);
t=insert_handle(generate_handle(), full_name);
*newkey=t->handle;
free(full_name);
return 0;
}
long RegCloseKey(long key)
{
reg_handle_t *handle;
if(key==HKEY_LOCAL_MACHINE)
return 0;
if(key==HKEY_CURRENT_USER)
return 0;
handle=find_handle(key);
if(handle==0)
return 0;
if(handle->prev)
handle->prev->next=handle->next;
if(handle->next)
handle->next->prev=handle->prev;
if(handle->name)
free(handle->name);
if(handle==head)
head=head->prev;
free(handle);
return 1;
}
long RegQueryValueExA(long key, const char* value, int* reserved, int* type, int* data, int* count)
{
struct reg_value* t;
char* c;
TRACE("Querying value %s\n", value);
if(!regs)
init_registry()
;
c=build_keyname(key, value);
if(c==NULL)
return 1;
if((t=find_value_by_name(c))==0)
{
free(c);
return 2;
}
free(c);
if(type)
*type=t->type;
if(data)
{
memcpy(data, t->value, (t->len<*count)?t->len:*count);
TRACE("returning %d bytes: %d\n", t->len, *(int*)data);
}
if(*count<t->len)
{
*count=t->len;
return ERROR_MORE_DATA;
}
else
{
*count=t->len;
}
return 0;
}
long RegCreateKeyExA(long key, const char* name, long reserved,
void* classs, long options, long security,
void* sec_attr, int* newkey, int* status)
{
reg_handle_t* t;
char* fullname;
struct reg_value* v;
// TRACE("Creating/Opening key %s\n", name);
TRACE("Creating/Opening key %s\n", name);
if(!regs)
init_registry()
;
fullname=build_keyname(key, name);
if(fullname==NULL)
return 1;
v=find_value_by_name(fullname);
if(v==0)
{
int qw=45708;
v=insert_reg_value(key, name, DIR, &qw, 4);
*status=REG_CREATED_NEW_KEY;
// return 0;
}
else
*status=REG_OPENED_EXISTING_KEY;
t=insert_handle(generate_handle(), fullname);
*newkey=t->handle;
free(fullname);
return 0;
}
long RegSetValueExA(long key, const char* name, long v1, long v2, const void* data, long size)
{
struct reg_value* t;
char* c;
TRACE("Request to set value %s\n", name);
if(!regs)
init_registry()
;
c=build_keyname(key, name);
if(c==NULL)
return 1;
insert_reg_value(key, name, v2, data, size);
free(c);
return 0;
}