Muldersoft/Launch5j
Muldersoft/Launch5j
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Some more improvements to detecting the Java version number.

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This commit is contained in:
LoRd_MuldeR 2020-09-29 16:43:26 +02:00
parent e0769c60b9
commit b3f5a895a1
1 changed files with 43 additions and 14 deletions
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53
src/head.c
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@ -356,6 +356,18 @@ static wchar_t *reg_read_string(const HKEY root_key, const wchar_t *const path,
return (wchar_t*) buffer;
}
static DWORD reg_read_string_uint32(const HKEY root_key, const wchar_t *const path, const wchar_t *const name, const BOOL view_64bit)
{
DWORD value = 0;
const wchar_t *const string = reg_read_string(root_key, path, name, view_64bit);
if(NOT_EMPTY(string))
{
value = wcstoul(string, NULL, 10);
}
free((void*)string);
return value;
}
static BOOL reg_enum_subkeys(const HKEY root_key, const wchar_t *const path, const BOOL view_64bit, const reg_enum_callback_t callback, const ULONG_PTR user_data)
{
HKEY key = NULL;
@ -557,7 +569,7 @@ static ULONGLONG parse_java_version(const wchar_t *const version_str)
{
break;
}
token = wcstok(NULL, L"._+");
token = wcstok(NULL, L"._+-b");
first_token = FALSE;
}
}
@ -580,9 +592,10 @@ static const wchar_t *detect_java_runtime_verify(const BOOL flag_x64, const HKEY
L"%ls\\jre\\bin\\javaw.exe", L"%ls\\bin\\javaw.exe", NULL
};
BOOL is_valid = FALSE;
const wchar_t *result = NULL;
wchar_t *const java_home_path = reg_read_string(root_key, full_reg_path, L"JavaHome", flag_x64);
trim_trailing_separator(wcstrim(java_home_path));
if (NOT_EMPTY(java_home_path))
{
for (size_t i = 0U; REL_PATHS[i]; ++i)
@ -592,8 +605,8 @@ static const wchar_t *detect_java_runtime_verify(const BOOL flag_x64, const HKEY
{
if (file_exists(java_executable_path))
{
free(java_home_path);
return java_executable_path;
result = java_executable_path;
break;
}
free(java_executable_path);
}
@ -601,27 +614,43 @@ static const wchar_t *detect_java_runtime_verify(const BOOL flag_x64, const HKEY
}
free(java_home_path);
return NULL;
return result;
}
static void patch_java_version(ULONGLONG *const version, const DWORD component_version, const UINT shift)
{
if(component_version > 0U)
{
*version &= (~(((ULONGLONG)0xFFFF) << shift));
*version |= (((ULONGLONG)(component_version & 0xFFFF)) << shift);
}
}
static BOOL detect_java_runtime_callback(const wchar_t *const key_name, const ULONG_PTR user_data)
{
java_home_t *const context_ptr = (java_home_t*) user_data;
const ULONGLONG version = parse_java_version(key_name);
if ((version >= context_ptr->required_ver_min) && (version < context_ptr->required_ver_max) && (version > context_ptr->version))
{
wchar_t *const full_reg_path = awprintf(L"%ls\\%ls", context_ptr->base_reg_path, key_name);
if (full_reg_path)
{
const wchar_t *const java_runtime_path = detect_java_runtime_verify(context_ptr->flag_x64, context_ptr->root_key, full_reg_path);
if(java_runtime_path)
ULONGLONG version = parse_java_version(key_name);
patch_java_version(&version, reg_read_string_uint32(context_ptr->root_key, full_reg_path, L"MicroVersion", context_ptr->flag_x64), 32U);
patch_java_version(&version, reg_read_string_uint32(context_ptr->root_key, full_reg_path, L"UpdateVersion", context_ptr->flag_x64), 16U);
patch_java_version(&version, reg_read_string_uint32(context_ptr->root_key, full_reg_path, L"BuildNumber", context_ptr->flag_x64), 0U);
if ((version >= context_ptr->required_ver_min) && (version < context_ptr->required_ver_max))
{
SET_STRING(context_ptr->runtime_path, java_runtime_path);
if (version > context_ptr->version)
{
const wchar_t *const java_executable_path = detect_java_runtime_verify(context_ptr->flag_x64, context_ptr->root_key, full_reg_path);
if(java_executable_path)
{
SET_STRING(context_ptr->runtime_path, java_executable_path);
context_ptr->version = version;
}
}
}
free(full_reg_path);
}
}
return TRUE;
}