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reg: Support recursion when querying a registry key. 

Signed-off-by: Hugh McMaster <hugh.mcmaster@outlook.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Hugh McMaster 2016-04-25 11:26:38 +00:00 committed by Alexandre Julliard
parent 77733651ad
commit c81b0494ba
1 changed files with 38 additions and 8 deletions
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46
programs/reg/reg.c
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@ -640,18 +640,34 @@ static void output_value(const WCHAR *value_name, DWORD type, BYTE *data, DWORD
output_string(newlineW);
}
static int query_all(HKEY key, WCHAR *path)
static WCHAR *build_subkey_path(WCHAR *path, DWORD path_len, WCHAR *subkey_name, DWORD subkey_len)
{
WCHAR *subkey_path;
WCHAR fmt[] = {'%','s','\\','%','s',0};
subkey_path = HeapAlloc(GetProcessHeap(), 0, (path_len + subkey_len + 2) * sizeof(WCHAR));
if (!subkey_path)
{
ERR("Failed to allocate memory for subkey_path\n");
return NULL;
}
sprintfW(subkey_path, fmt, path, subkey_name);
return subkey_path;
}
static int query_all(HKEY key, WCHAR *path, BOOL recurse)
{
LONG rc;
DWORD num_subkeys, max_subkey_len, subkey_len;
DWORD num_values, max_value_len, value_len;
DWORD max_data_bytes, data_size;
DWORD i, type;
DWORD i, type, path_len;
WCHAR fmt[] = {'%','1','\n',0};
WCHAR fmt_path[] = {'%','1','\\','%','2','\n',0};
WCHAR *value_name, *subkey_name;
WCHAR *value_name, *subkey_name, *subkey_path;
WCHAR newlineW[] = {'\n',0};
BYTE *data;
HKEY subkey;
rc = RegQueryInfoKeyW(key, NULL, NULL, NULL, &num_subkeys, &max_subkey_len, NULL,
&num_values, &max_value_len, &max_data_bytes, NULL, NULL);
@ -691,7 +707,7 @@ static int query_all(HKEY key, WCHAR *path)
HeapFree(GetProcessHeap(), 0, data);
HeapFree(GetProcessHeap(), 0, value_name);
if (num_values)
if (num_values || recurse)
output_string(newlineW);
max_subkey_len++;
@ -702,17 +718,31 @@ static int query_all(HKEY key, WCHAR *path)
return 1;
}
path_len = strlenW(path);
for (i = 0; i < num_subkeys; i++)
{
subkey_len = max_subkey_len;
rc = RegEnumKeyExW(key, i, subkey_name, &subkey_len, NULL, NULL, NULL, NULL);
if (rc == ERROR_SUCCESS)
output_string(fmt_path, path, subkey_name);
{
if (recurse)
{
subkey_path = build_subkey_path(path, path_len, subkey_name, subkey_len);
if (!RegOpenKeyExW(key, subkey_name, 0, KEY_READ, &subkey))
{
query_all(subkey, subkey_path, recurse);
RegCloseKey(subkey);
}
HeapFree(GetProcessHeap(), 0, subkey_path);
}
else output_string(fmt_path, path, subkey_name);
}
}
HeapFree(GetProcessHeap(), 0, subkey_name);
if (num_subkeys)
if (num_subkeys && !recurse)
output_string(newlineW);
return 0;
@ -751,13 +781,13 @@ static int reg_query(WCHAR *key_name, WCHAR *value_name, BOOL value_empty, BOOL
return 1;
}
if (value_name || value_empty || recurse)
if (value_name || value_empty)
{
output_string(stubW, key_name, value_name, value_empty, recurse);
return 1;
}
ret = query_all(key, key_name);
ret = query_all(key, key_name, recurse);
RegCloseKey(key);