When using the LLVM clang compiler instead the MSVC cl.exe but with
the same build environment as MSVC, clang encounters a few errors:
src\openvpn\socket.c(3550,23): warning: assigning to 'CHAR *' (aka 'char *')
from 'uint8_t *' (aka 'unsigned char *') converts between pointers to integer
types with different sign [-Wpointer-sign]
wsabuf[0].buf = BPTR(&sock->reads.buf);
^ ~~~~~~~~~~~~~~~~~~~~~~
src\openvpn\socket.c(3670,23): warning: assigning to 'CHAR *' (aka 'char *')
from 'uint8_t *' (aka 'unsigned char *') converts between pointers to integer
types with different sign [-Wpointer-sign]
wsabuf[0].buf = BPTR(&sock->writes.buf);
^ ~~~~~~~~~~~~~~~~~~~~~~~
Use BSTR instead of BPTR, which casts to the correct type that is
expected.
src\compat\compat-gettimeofday.c(105,18): error: assignment to cast is illegal,
lvalue casts are not supported
tv->tv_sec = (long)last_sec = (long)sec;
Split into two assignments to avoid the illegal cast
include\stdint.h(18,28): error: typedef redefinition with different types
('signed char' vs 'char')
typedef signed char int8_t;
^
openvpn\config-msvc.h(162,16): note: previous definition is here
typedef __int8 int8_t;
Removes our custom int type typdefs from config-msvc.h and replace it
with an include of inttypes.h.
C:\Program Files (x86)\Windows
Kits\10\include\10.0.19041.0\shared\tcpmib.h(56,3): error: typedef redefinition
with different types ('enum MIB_TCP_STATE' vs 'int')
} MIB_TCP_STATE;
^
C:\Users\User\source\repos\openvpn\src\openvpn/syshead.h(369,13): note:
previous definition is here
typedef int MIB_TCP_STATE;
^
1 error generated.
This seems to be for mingw32 only, so guard this with a mingw32
compiler guard.
\src\openvpn\tun.c(3727,34): warning: passing 'char [256]' to parameter of type
'LPBYTE' (aka 'unsigned char *') converts between pointers to integer types
with different sign [-Wpointer-sign]
net_cfg_instance_id,
^~~~~~~~~~~~~~~~~~~
C:\Program Files (x86)\Windows
Kits\10\include\10.0.19041.0\um\winreg.h(955,88): note: passing argument to
parameter 'lpData' here
This is windows specific code, use the Windows LPBTYE in the
definitions. (long pointer to BYTE (long pointer as far/near pointer
relict from windows 16 bit times, in moddern words (unsigned char *))
Fix also a few other char vs uint8/unisgned char/BYTE issues in tun.c
Signed-off-by: Arne Schwabe <[email protected]>
---
config-msvc.h | 9 +--------
src/compat/compat-gettimeofday.c | 3 ++-
src/openvpn/socket.c | 4 ++--
src/openvpn/syshead.h | 4 ++--
src/openvpn/tun.c | 28 ++++++++++++++--------------
src/openvpn/tun.h | 2 +-
6 files changed, 22 insertions(+), 28 deletions(-)
diff --git a/config-msvc.h b/config-msvc.h
index 40ad7889..e430ca96 100644
--- a/config-msvc.h
+++ b/config-msvc.h
@@ -152,14 +152,7 @@
#define SIGUSR2 12
#define SIGTERM 15
-typedef unsigned __int64 uint64_t;
-typedef unsigned __int32 uint32_t;
-typedef unsigned __int16 uint16_t;
-typedef unsigned __int8 uint8_t;
-typedef __int64 int64_t;
-typedef __int32 int32_t;
-typedef __int16 int16_t;
-typedef __int8 int8_t;
+#include <inttypes.h>
typedef uint16_t in_port_t;
#ifdef HAVE_CONFIG_MSVC_LOCAL_H
diff --git a/src/compat/compat-gettimeofday.c b/src/compat/compat-gettimeofday.c
index 7cae641d..117aee7d 100644
--- a/src/compat/compat-gettimeofday.c
+++ b/src/compat/compat-gettimeofday.c
@@ -102,7 +102,8 @@ gettimeofday(struct timeval *tv, void *tz)
bt = 1;
}
- tv->tv_sec = (long)last_sec = (long)sec;
+ last_sec = sec;
+ tv->tv_sec = (long)sec;
tv->tv_usec = (last_msec = msec) * 1000;
if (bt && !bt_last)
diff --git a/src/openvpn/socket.c b/src/openvpn/socket.c
index 891f63b0..ebe8c85c 100644
--- a/src/openvpn/socket.c
+++ b/src/openvpn/socket.c
@@ -3547,7 +3547,7 @@ socket_recv_queue(struct link_socket *sock, int maxsize)
}
/* Win32 docs say it's okay to allocate the wsabuf on the stack */
- wsabuf[0].buf = BPTR(&sock->reads.buf);
+ wsabuf[0].buf = BSTR(&sock->reads.buf);
wsabuf[0].len = maxsize ? maxsize : BLEN(&sock->reads.buf);
/* check for buffer overflow */
@@ -3648,7 +3648,7 @@ socket_send_queue(struct link_socket *sock, struct buffer
*buf, const struct lin
ASSERT(buf_copy(&sock->writes.buf, buf));
/* Win32 docs say it's okay to allocate the wsabuf on the stack */
- wsabuf[0].buf = BPTR(&sock->writes.buf);
+ wsabuf[0].buf = BSTR(&sock->writes.buf);
wsabuf[0].len = BLEN(&sock->writes.buf);
/* the overlapped write will signal this event on I/O completion */
diff --git a/src/openvpn/syshead.h b/src/openvpn/syshead.h
index a20de1f6..5ee9bf1e 100644
--- a/src/openvpn/syshead.h
+++ b/src/openvpn/syshead.h
@@ -365,9 +365,9 @@
#ifdef _WIN32
/* Missing declarations for MinGW 32. */
-/* #if !defined(__MINGW64_VERSION_MAJOR) || __MINGW64_VERSION_MAJOR < 2 */
+#if defined(__MINGW32__)
typedef int MIB_TCP_STATE;
-/* #endif */
+#endif
#include <naptypes.h>
#include <ntddndis.h>
#include <iphlpapi.h>
diff --git a/src/openvpn/tun.c b/src/openvpn/tun.c
index 1a523c7b..6c51a52d 100644
--- a/src/openvpn/tun.c
+++ b/src/openvpn/tun.c
@@ -3659,7 +3659,7 @@ get_device_instance_id_interface(struct gc_arena *gc)
BOOL res;
HKEY dev_key;
char net_cfg_instance_id_string[] = "NetCfgInstanceId";
- char net_cfg_instance_id[256];
+ BYTE net_cfg_instance_id[256];
char device_instance_id[256];
DWORD len;
DWORD data_type;
@@ -3721,7 +3721,7 @@ get_device_instance_id_interface(struct gc_arena *gc)
dev_interface_list = alloc_buf_gc(dev_interface_list_size, gc);
cr = CM_Get_Device_Interface_List((LPGUID)&GUID_DEVINTERFACE_NET,
device_instance_id,
- BPTR(&dev_interface_list),
+ BSTR(&dev_interface_list),
dev_interface_list_size,
CM_GET_DEVICE_INTERFACE_LIST_PRESENT);
if (cr != CR_SUCCESS)
@@ -3731,7 +3731,7 @@ get_device_instance_id_interface(struct gc_arena *gc)
struct device_instance_id_interface *dev_if;
ALLOC_OBJ_CLEAR_GC(dev_if, struct device_instance_id_interface, gc);
- dev_if->net_cfg_instance_id = string_alloc(net_cfg_instance_id, gc);
+ dev_if->net_cfg_instance_id = (unsigned char *)string_alloc((char
*)net_cfg_instance_id, gc);
dev_if->device_interface_list =
string_alloc(BSTR(&dev_interface_list), gc);
/* link into return list */
@@ -3784,7 +3784,7 @@ get_tap_reg(struct gc_arena *gc)
char component_id_string[] = "ComponentId";
char component_id[256];
char net_cfg_instance_id_string[] = "NetCfgInstanceId";
- char net_cfg_instance_id[256];
+ BYTE net_cfg_instance_id[256];
DWORD data_type;
len = sizeof(enum_name);
@@ -3829,7 +3829,7 @@ get_tap_reg(struct gc_arena *gc)
component_id_string,
NULL,
&data_type,
- component_id,
+ (LPBYTE)component_id,
&len);
if (status != ERROR_SUCCESS || data_type != REG_SZ)
@@ -3866,7 +3866,7 @@ get_tap_reg(struct gc_arena *gc)
{
struct tap_reg *reg;
ALLOC_OBJ_CLEAR_GC(reg, struct tap_reg, gc);
- reg->guid = string_alloc(net_cfg_instance_id, gc);
+ reg->guid = string_alloc((char *)net_cfg_instance_id,
gc);
reg->windows_driver = windows_driver;
/* link into return list */
@@ -4225,7 +4225,7 @@ at_least_one_tap_win(const struct tap_reg *tap_reg)
*/
static const char *
get_unspecified_device_guid(const int device_number,
- char *actual_name,
+ uint8_t *actual_name,
int actual_name_size,
const struct tap_reg *tap_reg_src,
const struct panel_reg *panel_reg_src,
@@ -4292,7 +4292,7 @@ get_unspecified_device_guid(const int device_number,
*/
static const char *
get_device_guid(const char *name,
- char *actual_name,
+ uint8_t *actual_name,
int actual_name_size,
enum windows_driver_type *windows_driver,
const struct tap_reg *tap_reg,
@@ -5023,7 +5023,7 @@ tap_allow_nonadmin_access(const char *dev_node)
const struct panel_reg *panel_reg = get_panel_reg(&gc);
const char *device_guid = NULL;
HANDLE hand;
- char actual_buffer[256];
+ uint8_t actual_buffer[256];
char device_path[256];
at_least_one_tap_win(tap_reg);
@@ -5673,9 +5673,9 @@ netsh_get_id(const char *dev_node, struct gc_arena *gc)
{
return "NULL"; /* not found */
}
- else if (strcmp(BPTR(&actual), "NULL"))
+ else if (strcmp(BSTR(&actual), "NULL"))
{
- return BPTR(&actual); /* control panel name */
+ return BSTR(&actual); /* control panel name */
}
else
{
@@ -6462,7 +6462,7 @@ tun_try_open_device(struct tuntap *tt, const char
*device_guid, const struct dev
/* Open Wintun adapter */
for (dev_if = device_instance_id_interface; dev_if != NULL; dev_if =
dev_if->next)
{
- if (strcmp(dev_if->net_cfg_instance_id, device_guid) == 0)
+ if (strcmp((const char *)dev_if->net_cfg_instance_id, device_guid)
== 0)
{
path = dev_if->device_interface_list;
break;
@@ -6517,7 +6517,7 @@ tun_open_device(struct tuntap *tt, const char *dev_node,
const char **device_gui
const struct tap_reg *tap_reg = get_tap_reg(gc);
const struct panel_reg *panel_reg = get_panel_reg(gc);
const struct device_instance_id_interface *device_instance_id_interface =
get_device_instance_id_interface(gc);
- char actual_buffer[256];
+ uint8_t actual_buffer[256];
at_least_one_tap_win(tap_reg);
@@ -6585,7 +6585,7 @@ next:
/* translate high-level device name into a device instance
* GUID using the registry */
- tt->actual_name = string_alloc(actual_buffer, NULL);
+ tt->actual_name = string_alloc((const char*)actual_buffer, NULL);
msg(M_INFO, "%s device [%s] opened",
print_windows_driver(tt->windows_driver), tt->actual_name);
tt->adapter_index = get_adapter_index(*device_guid);
diff --git a/src/openvpn/tun.h b/src/openvpn/tun.h
index 99826cf7..9d995dd4 100644
--- a/src/openvpn/tun.h
+++ b/src/openvpn/tun.h
@@ -390,7 +390,7 @@ struct panel_reg
struct device_instance_id_interface
{
- const char *net_cfg_instance_id;
+ LPBYTE net_cfg_instance_id;
const char *device_interface_list;
struct device_instance_id_interface *next;
};
--
2.30.1
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