[PATCH 1/5] reg: Add initial 'query' support
Hugh McMaster
hugh.mcmaster at outlook.com
Wed Apr 20 06:17:49 CDT 2016
Signed-off-by: Hugh McMaster <hugh.mcmaster at outlook.com>
---
programs/reg/reg.c | 108 +++++++++++++++++++++++++++++++++++++++++++++++++----
1 file changed, 101 insertions(+), 7 deletions(-)
diff --git a/programs/reg/reg.c b/programs/reg/reg.c
index ea1ef19..5fe9b98 100644
--- a/programs/reg/reg.c
+++ b/programs/reg/reg.c
@@ -537,14 +537,108 @@ static int reg_delete(WCHAR *key_name, WCHAR *value_name, BOOL value_empty,
return 0;
}
-static int reg_query(WCHAR *key_name, WCHAR *value_name, BOOL value_empty,
- BOOL subkey)
+static int query_all(HKEY key, WCHAR *path)
{
+ LONG rc;
+ DWORD num_subkeys, max_subkey_len, subkey_len;
+ DWORD num_values, max_value_len, value_len;
+ DWORD i;
+ WCHAR *value_name, *subkey_name;
+ WCHAR fmt[] = {'%','1','\n',0};
+ WCHAR fmt_value[] = {' ',' ',' ',' ','%','1','\n',0};
+ WCHAR fmt_path[] = {'%','1','\\','%','2','\n',0};
+
+ rc = RegQueryInfoKeyW(key, NULL, NULL, NULL, &num_subkeys, &max_subkey_len, NULL,
+ &num_values, &max_value_len, NULL, NULL, NULL);
+ if (rc)
+ {
+ ERR("RegQueryInfoKey failed: %d\n", rc);
+ return 1;
+ }
+
+ max_value_len++;
+ value_name = HeapAlloc(GetProcessHeap(), 0, max_value_len * sizeof(WCHAR));
+ if (!value_name)
+ {
+ ERR("Failed to allocate memory for value_name\n");
+ return 1;
+ }
+
+ output_string(fmt, path);
+
+ for (i = 0; i < num_values; i++)
+ {
+ value_len = max_value_len;
+ rc = RegEnumValueW(key, i, value_name, &value_len, NULL, NULL, NULL, NULL);
+ if (rc == ERROR_SUCCESS)
+ output_string(fmt_value, value_name);
+ }
+
+ HeapFree(GetProcessHeap(), 0, value_name);
+
+ max_subkey_len++;
+ subkey_name = HeapAlloc(GetProcessHeap(), 0, max_subkey_len * sizeof(WCHAR));
+ if (!subkey_name)
+ {
+ ERR("Failed to allocate memory for subkey_name\n");
+ return 1;
+ }
+
+ 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);
+ }
+
+ HeapFree(GetProcessHeap(), 0, subkey_name);
+ return 0;
+}
+
+static int reg_query(WCHAR *key_name, WCHAR *value_name, BOOL value_empty, BOOL recurse)
+{
+ WCHAR *p;
+ HKEY root, key;
static const WCHAR stubW[] = {'S','T','U','B',' ','Q','U','E','R','Y',' ',
'-',' ','%','1',' ','%','2',' ','%','3','!','d','!',' ','%','4','!','d','!','\n',0};
- output_string(stubW, key_name, value_name, value_empty, subkey);
+ int ret;
+
+ if (!sane_path(key_name))
+ return 1;
+
+ if (value_name && value_empty)
+ {
+ output_message(STRING_INVALID_CMDLINE);
+ return 1;
+ }
+
+ root = path_get_rootkey(key_name);
+ if (!root)
+ {
+ output_message(STRING_INVALID_KEY);
+ return 1;
+ }
+
+ p = strchrW(key_name, '\\');
+ if (p) p++;
+
+ if (RegOpenKeyExW(root, p, 0, KEY_READ, &key) != ERROR_SUCCESS)
+ {
+ output_message(STRING_CANNOT_FIND);
+ return 1;
+ }
+
+ if (value_name || value_empty || recurse)
+ {
+ output_string(stubW, key_name, value_name, value_empty, recurse);
+ return 1;
+ }
+
+ ret = query_all(key, key_name);
+ RegCloseKey(key);
- return 1;
+ return ret;
}
int wmain(int argc, WCHAR *argvW[])
@@ -668,7 +762,7 @@ int wmain(int argc, WCHAR *argvW[])
else if (!lstrcmpiW(argvW[1], queryW))
{
WCHAR *key_name, *value_name = NULL;
- BOOL value_empty = FALSE, subkey = FALSE;
+ BOOL value_empty = FALSE, recurse = FALSE;
if (argc < 3)
{
@@ -696,9 +790,9 @@ int wmain(int argc, WCHAR *argvW[])
else if (!lstrcmpiW(argvW[i], slashVEW))
value_empty = TRUE;
else if (!lstrcmpiW(argvW[i], slashSW))
- subkey = TRUE;
+ recurse = TRUE;
}
- return reg_query(key_name, value_name, value_empty, subkey);
+ return reg_query(key_name, value_name, value_empty, recurse);
}
else
{
--
1.9.1
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