OpenVPN sends the cipher name in uppercase, even if it's not standard, thus we have to convert it to lowercase for EVP_get_cipherbyname().
We also have to send the cipher name as it was received from the OpenVPN client, unless it's a different cipher, to prevent a message such as:
"WARNING: 'cipher' is used inconsistently, local='cipher AES-128-GCM', remote='cipher aes-128-gcm'"
It happens because OpenVPN uses "strcmp()" to compare the local and remote parameters: a6fd48ba36/src/openvpn/options.c (L3819-L3831)
See https://github.com/openssl/openssl/issues/6921 for EVP_get_cipherbyname().
/builds/SoftEther/SoftEtherVPN/src/Mayaqua/Encrypt.c: In function 'RsaCheck':
/builds/SoftEther/SoftEtherVPN/src/Mayaqua/Encrypt.c:2307:3: warning: 'RSA_generate_key' is deprecated [-Wdeprecated-declarations]
rsa = RSA_generate_key(bit, RSA_F4, NULL, NULL);
^~~
In file included from /usr/include/openssl/rsa.h:13:0,
from /usr/include/openssl/x509.h:31,
from /usr/include/openssl/ssl.h:50,
from /builds/SoftEther/SoftEtherVPN/src/Mayaqua/Encrypt.c:127:
/usr/include/openssl/rsa.h:193:1: note: declared here
DEPRECATEDIN_0_9_8(RSA *RSA_generate_key(int bits, unsigned long e, void
^
/builds/SoftEther/SoftEtherVPN/src/Mayaqua/Encrypt.c: In function 'RsaGen':
/builds/SoftEther/SoftEtherVPN/src/Mayaqua/Encrypt.c:2377:3: warning: 'RSA_generate_key' is deprecated [-Wdeprecated-declarations]
rsa = RSA_generate_key(bit, RSA_F4, NULL, NULL);
^~~
In file included from /usr/include/openssl/rsa.h:13:0,
from /usr/include/openssl/x509.h:31,
from /usr/include/openssl/ssl.h:50,
from /builds/SoftEther/SoftEtherVPN/src/Mayaqua/Encrypt.c:127:
/usr/include/openssl/rsa.h:193:1: note: declared here
DEPRECATEDIN_0_9_8(RSA *RSA_generate_key(int bits, unsigned long e, void
^
/builds/SoftEther/SoftEtherVPN/src/Mayaqua/Encrypt.c: In function 'X509ToX':
/builds/SoftEther/SoftEtherVPN/src/Mayaqua/Encrypt.c:3435:7: warning: 'ASN1_STRING_data' is deprecated [-Wdeprecated-declarations]
char *uri = (char *)ASN1_STRING_data(ad->location->d.uniformResourceIdentifier);
^~~~
In file included from /usr/include/openssl/bn.h:31:0,
from /usr/include/openssl/asn1.h:24,
from /usr/include/openssl/objects.h:916,
from /usr/include/openssl/evp.h:27,
from /usr/include/openssl/x509.h:23,
from /usr/include/openssl/ssl.h:50,
from /builds/SoftEther/SoftEtherVPN/src/Mayaqua/Encrypt.c:127:
/usr/include/openssl/asn1.h:553:1: note: declared here
DEPRECATEDIN_1_1_0(unsigned char *ASN1_STRING_data(ASN1_STRING *x))
^
/builds/SoftEther/SoftEtherVPN/src/Mayaqua/Encrypt.c: In function 'FreeOpenSSLThreadState':
/builds/SoftEther/SoftEtherVPN/src/Mayaqua/Encrypt.c:3643:2: warning: 'ERR_remove_state' is deprecated [-Wdeprecated-declarations]
ERR_remove_state(0);
^~~~~~~~~~~~~~~~
In file included from /usr/include/openssl/ct.h:13:0,
from /usr/include/openssl/ssl.h:61,
from /builds/SoftEther/SoftEtherVPN/src/Mayaqua/Encrypt.c:127:
/usr/include/openssl/err.h:248:1: note: declared here
DEPRECATEDIN_1_0_0(void ERR_remove_state(unsigned long pid))
^
/builds/SoftEther/SoftEtherVPN/src/Cedar/Console.c: In function 'PasswordPrompt':
/builds/SoftEther/SoftEtherVPN/src/Cedar/Console.c:2051:8: warning: implicit declaration of function 'getch'; did you mean 'getc'? [-Wimplicit-function-declaration]
c = getch();
^~~~~
getc
In file included from /builds/SoftEther/SoftEtherVPN/src/Cedar/Bridge.c:130:0:
/builds/SoftEther/SoftEtherVPN/src/Cedar/BridgeUnix.c: In function 'CloseEth':
/builds/SoftEther/SoftEtherVPN/src/Cedar/BridgeUnix.c:1568:3: warning: implicit declaration of function 'FreeTap'; did you mean 'FreeCaps'? [-Wimplicit-function-declaration]
FreeTap(e->Tap);
^~~~~~~
FreeCaps
[src/Mayaqua/FileIO.c:2299]: (style) The function 'ConvertPath' is never used.
[src/Mayaqua/FileIO.c:728]: (style) The function 'ConvertSafeFileNameW' is never used.
[src/Mayaqua/FileIO.c:2359]: (style) The function 'DeleteDirInner' is never used.
[src/Mayaqua/FileIO.c:2232]: (style) The function 'FileCloseAndDelete' is never used.
[src/Mayaqua/FileIO.c:2748]: (style) The function 'FileCreateInner' is never used.
[src/Mayaqua/FileIO.c:2537]: (style) The function 'FileDeleteInner' is never used.
[src/Mayaqua/FileIO.c:2858]: (style) The function 'FileOpenInner' is never used.
[src/Mayaqua/FileIO.c:2276]: (style) The function 'FileRenameInner' is never used.
[src/Mayaqua/FileIO.c:680]: (style) The function 'FileReplaceRename' is never used.
[src/Mayaqua/FileIO.c:2581]: (style) The function 'FileSizeEx' is never used.
[src/Mayaqua/FileIO.c:2812]: (style) The function 'FileWriteAll' is never used.
[src/Mayaqua/FileIO.c:1992]: (style) The function 'GetCurrentDir' is never used.
[src/Mayaqua/FileIO.c:765]: (style) The function 'GetDiskFreeW' is never used.
[src/Mayaqua/FileIO.c:1852]: (style) The function 'IsFileExistsInner' is never used.
[src/Mayaqua/FileIO.c:235]: (style) The function 'IsFileWriteLocked' is never used.
[src/Mayaqua/FileIO.c:2494]: (style) The function 'MakeDirInner' is never used.
[src/Mayaqua/FileIO.c:1568]: (style) The function 'MakeSafeFileNameW' is never used.
[src/Mayaqua/FileIO.c:1941]: (style) The function 'ParseSplitedPath' is never used.
[src/Mayaqua/FileIO.c:995]: (style) The function 'SafeFileNameW' is never used.
[src/Mayaqua/FileIO.c:2369]: (style) The function 'FileSizeExW' is never used.
[src/Mayaqua/FileIO.c:1848]: (style) The function 'GetCurrentDirW' is never used.
[src/Cedar/WinUi.c:7240]: (style) The function 'CbInsertStr' is never used.
[src/Cedar/WinUi.c:9271]: (style) The function 'CheckTextLen' is never used.
[src/Cedar/WinUi.c:9252]: (style) The function 'CheckTextSize' is never used.
[src/Cedar/WinUi.c:8936]: (style) The function 'DialogCreateEx' is never used.
[src/Cedar/WinUi.c:2155]: (style) The function 'EndFreeInfoDlg' is never used.
[src/Cedar/WinUi.c:2171]: (style) The function 'ExecuteHamcoreExe' is never used.
[src/Cedar/WinUi.c:9885]: (style) The function 'FormatTextA' is never used.
[src/Cedar/WinUi.c:9323]: (style) The function 'GetFontSize' is never used.
[src/Cedar/WinUi.c:9841]: (style) The function 'GetMonitorSize' is never used.
[src/Cedar/WinUi.c:9759]: (style) The function 'GetWindowClientRect' is never used.
[src/Cedar/WinUi.c:1134]: (style) The function 'GetWizardPageIndex' is never used.
[src/Cedar/WinUi.c:3964]: (style) The function 'IpClear' is never used.
[src/Cedar/WinUi.c:6851]: (style) The function 'LbAddStr' is never used.
[src/Cedar/WinUi.c:6824]: (style) The function 'LbFindStr' is never used.
[src/Cedar/WinUi.c:7064]: (style) The function 'LbGetSelect' is never used.
[src/Cedar/WinUi.c:6812]: (style) The function 'LbGetStr' is never used.
[src/Cedar/WinUi.c:6900]: (style) The function 'LbInsertStr' is never used.
[src/Cedar/WinUi.c:7012]: (style) The function 'LbSetHeight' is never used.
[src/Cedar/WinUi.c:3652]: (style) The function 'LedDrawRect' is never used.
[src/Cedar/WinUi.c:6000]: (style) The function 'LvGetMaskedNum' is never used.
[src/Cedar/WinUi.c:6037]: (style) The function 'LvSearchStr_' is never used.
[src/Cedar/WinUi.c:5703]: (style) The function 'LvSetItemImage' is never used.
[src/Cedar/WinUi.c:5831]: (style) The function 'LvShow' is never used.
[src/Cedar/WinUi.c:10155]: (style) The function 'NoTop' is never used.
[src/Cedar/WinUi.c:10047]: (style) The function 'NoticeSettingChange' is never used.
[src/Cedar/WinUi.c:7854]: (style) The function 'PkcsUtil' is never used.
[src/Cedar/WinUi.c:8968]: (style) The function 'SetBitmap' is never used.
[src/Cedar/WinUi.c:4539]: (style) The function 'SetMenuItemEnable' is never used.
[src/Cedar/WinUi.c:9918]: (style) The function 'SetTextEx' is never used.
[src/Cedar/WinUi.c:9940]: (style) The function 'SetTextExA' is never used.
[src/Cedar/WinUi.c:11272]: (style) The function 'SetWinUiTitle' is never used.
[src/Cedar/WinUi.c:2132]: (style) The function 'StartFreeInfoDlg' is never used.
[src/Cedar/WinUi.c:3920]: (style) The function 'UiTest' is never used.
[src/Cedar/WinUi.c:1558]: (style) The function 'WinConnectEx2' is never used.
[src/Cedar/WinUi.c:10803]: (style) The function 'WinUiDebug' is never used.
[src/Cedar/WinUi.c:6908]: (style) The function 'CbInsertStr9xA' is never used.
[src/Cedar/WinUi.c:2096]: (style) The function 'FreeInfoThread' is never used.
[src/Cedar/WinUi.c:9644]: (style) The function 'GetTextSize' is never used.
[src/Cedar/WinUi.c:2833]: (style) The function 'GetWindowAndControlSizeResizeScale' is never used.
[src/Cedar/WinUi.c:2001]: (style) The function 'IsRegistedToDontShowFreeEditionDialog' is never used.
[src/Cedar/WinUi.c:6606]: (style) The function 'LbAddStrA' is never used.
[src/Cedar/WinUi.c:6739]: (style) The function 'LbGetSelectIndex' is never used.
[src/Cedar/WinUi.c:6627]: (style) The function 'LbInsertStrA' is never used.
[src/Cedar/WinUi.c:7593]: (style) The function 'PkcsUtilProc' is never used.
[src/Cedar/WinUi.c:6598]: (style) The function 'LbSelect' is never used.
[src/Cedar/WinUi.c:7421]: (style) The function 'PkcsUtilErase' is never used.
[src/Cedar/WinUi.c:7349]: (style) The function 'PkcsUtilWrite' is never used.
[src/Cedar/WinUi.c:2059]: (style) The function 'ShowFreeInfoDialog' is never used.
[src/Cedar/WinUi.c:2013]: (style) The function 'FreeInfoDialogProc' is never used.
[src/Cedar/WinUi.c:6558]: (style) The function 'LbFindData' is never used.
[src/Cedar/WinUi.c:6534]: (style) The function 'LbSelectIndex' is never used.
[src/Cedar/WinUi.c:6488]: (style) The function 'LbGetData' is never used.
[src/Cedar/WinUi.c:6464]: (style) The function 'LbNum' is never used.
[src/Cedar/WinUi.c:2001]: (style) The function 'RegistToDontShowFreeEditionDialog' is never used.
With server certificate validation enabled, vpnclient unconditionally
stopped connection on untrusted server certificate. Added account
configuration parameter to retry connection if server certivicate failed
validation.
On startup client creates TUN interface in UP state and kept it UP even
if connection to the server was lost. Creating interface in DOWN state,
turning it UP on successful (re-)connection to server and DOWN on either
disconnect or connection loss would enable DHCP client (say dhclient5)
to detect necessity for lease renewal.
Added a client configuration parameter to create TUN interface in DOWN
state and commands to enable, disable, and query the configuration
parameter.
Enabling the parameter causes client to put all unused TUN interfaces
DOWN, create new TUN interfaces in DOWN state, and turn TUN interfaces
corresponding to active sessions DOWN on connection loss or
disconnecting from server.
Disabling the parameter forces client to turn all TUN interfaces UP and
create new TUN interfaces in UP state.
Default value is 'Disable'.
