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FreeRDP/server/proxy/pf_config.c

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/**
* FreeRDP: A Remote Desktop Protocol Implementation
* FreeRDP Proxy Server
*
* Copyright 2019 Kobi Mizrachi <kmizrachi18@gmail.com>
* Copyright 2019 Idan Freiberg <speidy@gmail.com>
* Copyright 2021,2023 Armin Novak <anovak@thincast.com>
* Copyright 2021,2023 Thincast Technologies GmbH
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include <string.h>
#include <winpr/crt.h>
#include <winpr/path.h>
#include <winpr/collections.h>
#include <winpr/cmdline.h>
#include "pf_server.h"
#include <freerdp/server/proxy/proxy_config.h>
#include <freerdp/server/proxy/proxy_log.h>
#include <freerdp/crypto/crypto.h>
#include <freerdp/channels/cliprdr.h>
#include <freerdp/channels/rdpsnd.h>
#include <freerdp/channels/audin.h>
#include <freerdp/channels/rdpdr.h>
#include <freerdp/channels/disp.h>
#include <freerdp/channels/rail.h>
#include <freerdp/channels/rdpei.h>
#include <freerdp/channels/tsmf.h>
#include <freerdp/channels/video.h>
#include <freerdp/channels/rdpecam.h>
#include "pf_utils.h"
#define TAG PROXY_TAG("config")
#define CONFIG_PRINT_SECTION(section) WLog_INFO(TAG, "\t%s:", section)
#define CONFIG_PRINT_SECTION_KEY(section, key) WLog_INFO(TAG, "\t%s/%s:", section, key)
#define CONFIG_PRINT_STR(config, key) WLog_INFO(TAG, "\t\t%s: %s", #key, config->key)
#define CONFIG_PRINT_STR_CONTENT(config, key) \
WLog_INFO(TAG, "\t\t%s: %s", #key, config->key ? "set" : NULL)
#define CONFIG_PRINT_BOOL(config, key) WLog_INFO(TAG, "\t\t%s: %s", #key, boolstr(config->key))
#define CONFIG_PRINT_UINT16(config, key) WLog_INFO(TAG, "\t\t%s: %" PRIu16 "", #key, config->key)
#define CONFIG_PRINT_UINT32(config, key) WLog_INFO(TAG, "\t\t%s: %" PRIu32 "", #key, config->key)
static const char* bool_str_true = "true";
static const char* bool_str_false = "false";
static const char* boolstr(BOOL rc)
{
return rc ? bool_str_true : bool_str_false;
}
static const char* section_server = "Server";
static const char* key_host = "Host";
static const char* key_port = "Port";
static const char* section_target = "Target";
static const char* key_target_fixed = "FixedTarget";
static const char* key_target_user = "User";
static const char* key_target_pwd = "Password";
static const char* key_target_domain = "Domain";
static const char* key_target_tls_seclevel = "TlsSecLevel";
static const char* section_clipboard = "Clipboard";
static const char* key_clip_text_only = "TextOnly";
static const char* key_clip_text_max_len = "MaxTextLength";
static const char* section_gfx_settings = "GFXSettings";
static const char* key_gfx_decode = "DecodeGFX";
static const char* section_plugins = "Plugins";
static const char* key_plugins_modules = "Modules";
static const char* key_plugins_required = "Required";
static const char* section_channels = "Channels";
static const char* key_channels_gfx = "GFX";
static const char* key_channels_disp = "DisplayControl";
static const char* key_channels_clip = "Clipboard";
static const char* key_channels_mic = "AudioInput";
static const char* key_channels_sound = "AudioOutput";
static const char* key_channels_rdpdr = "DeviceRedirection";
static const char* key_channels_video = "VideoRedirection";
static const char* key_channels_camera = "CameraRedirection";
static const char* key_channels_rails = "RemoteApp";
static const char* key_channels_blacklist = "PassthroughIsBlacklist";
static const char* key_channels_pass = "Passthrough";
static const char* key_channels_intercept = "Intercept";
static const char* section_input = "Input";
static const char* key_input_kbd = "Keyboard";
static const char* key_input_mouse = "Mouse";
static const char* key_input_multitouch = "Multitouch";
static const char* section_security = "Security";
static const char* key_security_server_nla = "ServerNlaSecurity";
static const char* key_security_server_tls = "ServerTlsSecurity";
static const char* key_security_server_rdp = "ServerRdpSecurity";
static const char* key_security_client_nla = "ClientNlaSecurity";
static const char* key_security_client_tls = "ClientTlsSecurity";
static const char* key_security_client_rdp = "ClientRdpSecurity";
static const char* key_security_client_fallback = "ClientAllowFallbackToTls";
static const char* section_certificates = "Certificates";
static const char* key_private_key_file = "PrivateKeyFile";
static const char* key_private_key_content = "PrivateKeyContent";
static const char* key_cert_file = "CertificateFile";
static const char* key_cert_content = "CertificateContent";
static char** pf_config_parse_comma_separated_list(const char* list, size_t* count)
{
if (!list || !count)
return NULL;
if (strlen(list) == 0)
{
*count = 0;
return NULL;
}
return CommandLineParseCommaSeparatedValues(list, count);
}
static BOOL pf_config_get_uint16(wIniFile* ini, const char* section, const char* key,
UINT16* result, BOOL required)
{
int val = 0;
const char* strval = NULL;
WINPR_ASSERT(result);
strval = IniFile_GetKeyValueString(ini, section, key);
if (!strval && required)
{
WLog_ERR(TAG, "key '%s.%s' does not exist.", section, key);
return FALSE;
}
val = IniFile_GetKeyValueInt(ini, section, key);
if ((val <= 0) || (val > UINT16_MAX))
{
WLog_ERR(TAG, "invalid value %d for key '%s.%s'.", val, section, key);
return FALSE;
}
*result = (UINT16)val;
return TRUE;
}
static BOOL pf_config_get_uint32(wIniFile* ini, const char* section, const char* key,
UINT32* result, BOOL required)
{
int val = 0;
const char* strval = NULL;
WINPR_ASSERT(result);
strval = IniFile_GetKeyValueString(ini, section, key);
if (!strval)
{
if (required)
WLog_ERR(TAG, "key '%s.%s' does not exist.", section, key);
return !required;
}
val = IniFile_GetKeyValueInt(ini, section, key);
if ((val < 0) || (val > INT32_MAX))
{
WLog_ERR(TAG, "invalid value %d for key '%s.%s'.", val, section, key);
return FALSE;
}
*result = (UINT32)val;
return TRUE;
}
static BOOL pf_config_get_bool(wIniFile* ini, const char* section, const char* key, BOOL fallback)
{
int num_value = 0;
const char* str_value = NULL;
str_value = IniFile_GetKeyValueString(ini, section, key);
if (!str_value)
{
WLog_WARN(TAG, "key '%s.%s' not found, value defaults to %s.", section, key,
fallback ? bool_str_true : bool_str_false);
return fallback;
}
if (_stricmp(str_value, bool_str_true) == 0)
return TRUE;
if (_stricmp(str_value, bool_str_false) == 0)
return FALSE;
num_value = IniFile_GetKeyValueInt(ini, section, key);
if (num_value != 0)
return TRUE;
return FALSE;
}
static const char* pf_config_get_str(wIniFile* ini, const char* section, const char* key,
BOOL required)
{
const char* value = NULL;
value = IniFile_GetKeyValueString(ini, section, key);
if (!value)
{
if (required)
WLog_ERR(TAG, "key '%s.%s' not found.", section, key);
return NULL;
}
return value;
}
static BOOL pf_config_load_server(wIniFile* ini, proxyConfig* config)
{
const char* host = NULL;
WINPR_ASSERT(config);
host = pf_config_get_str(ini, section_server, key_host, FALSE);
if (!host)
return TRUE;
config->Host = _strdup(host);
if (!config->Host)
return FALSE;
if (!pf_config_get_uint16(ini, section_server, key_port, &config->Port, TRUE))
return FALSE;
return TRUE;
}
static BOOL pf_config_load_target(wIniFile* ini, proxyConfig* config)
{
const char* target_value = NULL;
WINPR_ASSERT(config);
config->FixedTarget = pf_config_get_bool(ini, section_target, key_target_fixed, FALSE);
if (!pf_config_get_uint16(ini, section_target, key_port, &config->TargetPort,
config->FixedTarget))
return FALSE;
if (!pf_config_get_uint32(ini, section_target, key_target_tls_seclevel,
&config->TargetTlsSecLevel, FALSE))
return FALSE;
if (config->FixedTarget)
{
target_value = pf_config_get_str(ini, section_target, key_host, TRUE);
if (!target_value)
return FALSE;
config->TargetHost = _strdup(target_value);
if (!config->TargetHost)
return FALSE;
}
target_value = pf_config_get_str(ini, section_target, key_target_user, FALSE);
if (target_value)
{
config->TargetUser = _strdup(target_value);
if (!config->TargetUser)
return FALSE;
}
target_value = pf_config_get_str(ini, section_target, key_target_pwd, FALSE);
if (target_value)
{
config->TargetPassword = _strdup(target_value);
if (!config->TargetPassword)
return FALSE;
}
target_value = pf_config_get_str(ini, section_target, key_target_domain, FALSE);
if (target_value)
{
config->TargetDomain = _strdup(target_value);
if (!config->TargetDomain)
return FALSE;
}
return TRUE;
}
static BOOL pf_config_load_channels(wIniFile* ini, proxyConfig* config)
{
WINPR_ASSERT(config);
config->GFX = pf_config_get_bool(ini, section_channels, key_channels_gfx, TRUE);
config->DisplayControl = pf_config_get_bool(ini, section_channels, key_channels_disp, TRUE);
config->Clipboard = pf_config_get_bool(ini, section_channels, key_channels_clip, FALSE);
config->AudioOutput = pf_config_get_bool(ini, section_channels, key_channels_mic, TRUE);
config->AudioInput = pf_config_get_bool(ini, section_channels, key_channels_sound, TRUE);
config->DeviceRedirection = pf_config_get_bool(ini, section_channels, key_channels_rdpdr, TRUE);
config->VideoRedirection = pf_config_get_bool(ini, section_channels, key_channels_video, TRUE);
config->CameraRedirection =
pf_config_get_bool(ini, section_channels, key_channels_camera, TRUE);
config->RemoteApp = pf_config_get_bool(ini, section_channels, key_channels_rails, FALSE);
config->PassthroughIsBlacklist =
pf_config_get_bool(ini, section_channels, key_channels_blacklist, FALSE);
config->Passthrough = pf_config_parse_comma_separated_list(
pf_config_get_str(ini, section_channels, key_channels_pass, FALSE),
&config->PassthroughCount);
config->Intercept = pf_config_parse_comma_separated_list(
pf_config_get_str(ini, section_channels, key_channels_intercept, FALSE),
&config->InterceptCount);
return TRUE;
}
static BOOL pf_config_load_input(wIniFile* ini, proxyConfig* config)
{
WINPR_ASSERT(config);
config->Keyboard = pf_config_get_bool(ini, section_input, key_input_kbd, TRUE);
config->Mouse = pf_config_get_bool(ini, section_input, key_input_mouse, TRUE);
config->Multitouch = pf_config_get_bool(ini, section_input, key_input_multitouch, TRUE);
return TRUE;
}
static BOOL pf_config_load_security(wIniFile* ini, proxyConfig* config)
{
WINPR_ASSERT(config);
config->ServerTlsSecurity =
pf_config_get_bool(ini, section_security, key_security_server_tls, TRUE);
config->ServerNlaSecurity =
pf_config_get_bool(ini, section_security, key_security_server_nla, FALSE);
config->ServerRdpSecurity =
pf_config_get_bool(ini, section_security, key_security_server_rdp, TRUE);
config->ClientTlsSecurity =
pf_config_get_bool(ini, section_security, key_security_client_tls, TRUE);
config->ClientNlaSecurity =
pf_config_get_bool(ini, section_security, key_security_client_nla, TRUE);
config->ClientRdpSecurity =
pf_config_get_bool(ini, section_security, key_security_client_rdp, TRUE);
config->ClientAllowFallbackToTls =
pf_config_get_bool(ini, section_security, key_security_client_fallback, TRUE);
return TRUE;
}
static BOOL pf_config_load_clipboard(wIniFile* ini, proxyConfig* config)
{
WINPR_ASSERT(config);
config->TextOnly = pf_config_get_bool(ini, section_clipboard, key_clip_text_only, FALSE);
if (!pf_config_get_uint32(ini, section_clipboard, key_clip_text_max_len, &config->MaxTextLength,
FALSE))
return FALSE;
return TRUE;
}
static BOOL pf_config_load_modules(wIniFile* ini, proxyConfig* config)
{
const char* modules_to_load = NULL;
const char* required_modules = NULL;
modules_to_load = pf_config_get_str(ini, section_plugins, key_plugins_modules, FALSE);
required_modules = pf_config_get_str(ini, section_plugins, key_plugins_required, FALSE);
WINPR_ASSERT(config);
config->Modules = pf_config_parse_comma_separated_list(modules_to_load, &config->ModulesCount);
config->RequiredPlugins =
pf_config_parse_comma_separated_list(required_modules, &config->RequiredPluginsCount);
return TRUE;
}
static BOOL pf_config_load_gfx_settings(wIniFile* ini, proxyConfig* config)
{
WINPR_ASSERT(config);
config->DecodeGFX = pf_config_get_bool(ini, section_gfx_settings, key_gfx_decode, FALSE);
return TRUE;
}
static char* pf_config_decode_base64(const char* data, const char* name, size_t* pLength)
{
const char* headers[] = { "-----BEGIN PUBLIC KEY-----", "-----BEGIN RSA PUBLIC KEY-----",
"-----BEGIN CERTIFICATE-----", "-----BEGIN PRIVATE KEY-----",
"-----BEGIN RSA PRIVATE KEY-----" };
size_t decoded_length = 0;
char* decoded = NULL;
if (!data)
{
WLog_ERR(TAG, "Invalid base64 data [%p] for %s", data, name);
return NULL;
}
WINPR_ASSERT(name);
WINPR_ASSERT(pLength);
const size_t length = strlen(data);
if (strncmp(data, "-----", 5) == 0)
{
BOOL expected = FALSE;
for (size_t x = 0; x < ARRAYSIZE(headers); x++)
{
const char* header = headers[x];
if (strncmp(data, header, strlen(header)) == 0)
expected = TRUE;
}
if (!expected)
{
/* Extract header for log message
* expected format is '----- SOMETEXT -----'
*/
char hdr[128] = { 0 };
const char* end = strchr(&data[5], '-');
if (end)
{
while (*end == '-')
end++;
const size_t s = MIN(ARRAYSIZE(hdr) - 1, end - data);
memcpy(hdr, data, s);
}
WLog_WARN(TAG, "PEM has unexpected header '%s'. Known supported headers are:", hdr);
for (size_t x = 0; x < ARRAYSIZE(headers); x++)
{
const char* header = headers[x];
WLog_WARN(TAG, "%s", header);
}
}
*pLength = length + 1;
return _strdup(data);
}
crypto_base64_decode(data, length, (BYTE**)&decoded, &decoded_length);
if (!decoded || decoded_length == 0)
{
WLog_ERR(TAG, "Failed to decode base64 data of length %" PRIuz " for %s", length, name);
free(decoded);
return NULL;
}
*pLength = strnlen(decoded, decoded_length) + 1;
return decoded;
}
static BOOL pf_config_load_certificates(wIniFile* ini, proxyConfig* config)
{
const char* tmp1 = NULL;
const char* tmp2 = NULL;
WINPR_ASSERT(ini);
WINPR_ASSERT(config);
tmp1 = pf_config_get_str(ini, section_certificates, key_cert_file, FALSE);
if (tmp1)
{
if (!winpr_PathFileExists(tmp1))
{
WLog_ERR(TAG, "%s/%s file %s does not exist", section_certificates, key_cert_file,
tmp1);
return FALSE;
}
config->CertificateFile = _strdup(tmp1);
config->CertificatePEM =
crypto_read_pem(config->CertificateFile, &config->CertificatePEMLength);
if (!config->CertificatePEM)
return FALSE;
config->CertificatePEMLength += 1;
}
tmp2 = pf_config_get_str(ini, section_certificates, key_cert_content, FALSE);
if (tmp2)
{
if (strlen(tmp2) < 1)
{
WLog_ERR(TAG, "%s/%s has invalid empty value", section_certificates, key_cert_content);
return FALSE;
}
config->CertificateContent = _strdup(tmp2);
config->CertificatePEM = pf_config_decode_base64(
config->CertificateContent, "CertificateContent", &config->CertificatePEMLength);
if (!config->CertificatePEM)
return FALSE;
}
if (tmp1 && tmp2)
{
WLog_ERR(TAG,
"%s/%s and %s/%s are "
"mutually exclusive options",
section_certificates, key_cert_file, section_certificates, key_cert_content);
return FALSE;
}
else if (!tmp1 && !tmp2)
{
WLog_ERR(TAG,
"%s/%s or %s/%s are "
"required settings",
section_certificates, key_cert_file, section_certificates, key_cert_content);
return FALSE;
}
tmp1 = pf_config_get_str(ini, section_certificates, key_private_key_file, FALSE);
if (tmp1)
{
if (!winpr_PathFileExists(tmp1))
{
WLog_ERR(TAG, "%s/%s file %s does not exist", section_certificates,
key_private_key_file, tmp1);
return FALSE;
}
config->PrivateKeyFile = _strdup(tmp1);
config->PrivateKeyPEM =
crypto_read_pem(config->PrivateKeyFile, &config->PrivateKeyPEMLength);
if (!config->PrivateKeyPEM)
return FALSE;
config->PrivateKeyPEMLength += 1;
}
tmp2 = pf_config_get_str(ini, section_certificates, key_private_key_content, FALSE);
if (tmp2)
{
if (strlen(tmp2) < 1)
{
WLog_ERR(TAG, "%s/%s has invalid empty value", section_certificates,
key_private_key_content);
return FALSE;
}
config->PrivateKeyContent = _strdup(tmp2);
config->PrivateKeyPEM = pf_config_decode_base64(
config->PrivateKeyContent, "PrivateKeyContent", &config->PrivateKeyPEMLength);
if (!config->PrivateKeyPEM)
return FALSE;
}
if (tmp1 && tmp2)
{
WLog_ERR(TAG,
"%s/%s and %s/%s are "
"mutually exclusive options",
section_certificates, key_private_key_file, section_certificates,
key_private_key_content);
return FALSE;
}
else if (!tmp1 && !tmp2)
{
WLog_ERR(TAG,
"%s/%s or %s/%s are "
"are required settings",
section_certificates, key_private_key_file, section_certificates,
key_private_key_content);
return FALSE;
}
return TRUE;
}
proxyConfig* server_config_load_ini(wIniFile* ini)
{
proxyConfig* config = NULL;
WINPR_ASSERT(ini);
config = calloc(1, sizeof(proxyConfig));
if (config)
{
/* Set default values != 0 */
config->TargetTlsSecLevel = 1;
/* Load from ini */
if (!pf_config_load_server(ini, config))
goto out;
if (!pf_config_load_target(ini, config))
goto out;
if (!pf_config_load_channels(ini, config))
goto out;
if (!pf_config_load_input(ini, config))
goto out;
if (!pf_config_load_security(ini, config))
goto out;
if (!pf_config_load_modules(ini, config))
goto out;
if (!pf_config_load_clipboard(ini, config))
goto out;
if (!pf_config_load_gfx_settings(ini, config))
goto out;
if (!pf_config_load_certificates(ini, config))
goto out;
config->ini = IniFile_Clone(ini);
if (!config->ini)
goto out;
}
return config;
out:
pf_server_config_free(config);
return NULL;
}
BOOL pf_server_config_dump(const char* file)
{
BOOL rc = FALSE;
wIniFile* ini = IniFile_New();
if (!ini)
return FALSE;
/* Proxy server configuration */
if (IniFile_SetKeyValueString(ini, section_server, key_host, "0.0.0.0") < 0)
goto fail;
if (IniFile_SetKeyValueInt(ini, section_server, key_port, 3389) < 0)
goto fail;
/* Target configuration */
if (IniFile_SetKeyValueString(ini, section_target, key_host, "somehost.example.com") < 0)
goto fail;
if (IniFile_SetKeyValueInt(ini, section_target, key_port, 3389) < 0)
goto fail;
if (IniFile_SetKeyValueString(ini, section_target, key_target_fixed, bool_str_true) < 0)
goto fail;
if (IniFile_SetKeyValueInt(ini, section_target, key_target_tls_seclevel, 1) < 0)
goto fail;
/* Channel configuration */
if (IniFile_SetKeyValueString(ini, section_channels, key_channels_gfx, bool_str_true) < 0)
goto fail;
if (IniFile_SetKeyValueString(ini, section_channels, key_channels_disp, bool_str_true) < 0)
goto fail;
if (IniFile_SetKeyValueString(ini, section_channels, key_channels_clip, bool_str_true) < 0)
goto fail;
if (IniFile_SetKeyValueString(ini, section_channels, key_channels_mic, bool_str_true) < 0)
goto fail;
if (IniFile_SetKeyValueString(ini, section_channels, key_channels_sound, bool_str_true) < 0)
goto fail;
if (IniFile_SetKeyValueString(ini, section_channels, key_channels_rdpdr, bool_str_true) < 0)
goto fail;
if (IniFile_SetKeyValueString(ini, section_channels, key_channels_video, bool_str_true) < 0)
goto fail;
if (IniFile_SetKeyValueString(ini, section_channels, key_channels_camera, bool_str_true) < 0)
goto fail;
if (IniFile_SetKeyValueString(ini, section_channels, key_channels_rails, bool_str_false) < 0)
goto fail;
if (IniFile_SetKeyValueString(ini, section_channels, key_channels_blacklist, bool_str_true) < 0)
goto fail;
if (IniFile_SetKeyValueString(ini, section_channels, key_channels_pass, "") < 0)
goto fail;
if (IniFile_SetKeyValueString(ini, section_channels, key_channels_intercept, "") < 0)
goto fail;
/* Input configuration */
if (IniFile_SetKeyValueString(ini, section_input, key_input_kbd, bool_str_true) < 0)
goto fail;
if (IniFile_SetKeyValueString(ini, section_input, key_input_mouse, bool_str_true) < 0)
goto fail;
if (IniFile_SetKeyValueString(ini, section_input, key_input_multitouch, bool_str_true) < 0)
goto fail;
/* Security settings */
if (IniFile_SetKeyValueString(ini, section_security, key_security_server_tls, bool_str_true) <
0)
goto fail;
if (IniFile_SetKeyValueString(ini, section_security, key_security_server_nla, bool_str_false) <
0)
goto fail;
if (IniFile_SetKeyValueString(ini, section_security, key_security_server_rdp, bool_str_true) <
0)
goto fail;
if (IniFile_SetKeyValueString(ini, section_security, key_security_client_tls, bool_str_true) <
0)
goto fail;
if (IniFile_SetKeyValueString(ini, section_security, key_security_client_nla, bool_str_true) <
0)
goto fail;
if (IniFile_SetKeyValueString(ini, section_security, key_security_client_rdp, bool_str_true) <
0)
goto fail;
if (IniFile_SetKeyValueString(ini, section_security, key_security_client_fallback,
bool_str_true) < 0)
goto fail;
/* Module configuration */
if (IniFile_SetKeyValueString(ini, section_plugins, key_plugins_modules,
"module1,module2,...") < 0)
goto fail;
if (IniFile_SetKeyValueString(ini, section_plugins, key_plugins_required,
"module1,module2,...") < 0)
goto fail;
/* Clipboard configuration */
if (IniFile_SetKeyValueString(ini, section_clipboard, key_clip_text_only, bool_str_false) < 0)
goto fail;
if (IniFile_SetKeyValueInt(ini, section_clipboard, key_clip_text_max_len, 0) < 0)
goto fail;
/* GFX configuration */
if (IniFile_SetKeyValueString(ini, section_gfx_settings, key_gfx_decode, bool_str_false) < 0)
goto fail;
/* Certificate configuration */
if (IniFile_SetKeyValueString(ini, section_certificates, key_cert_file,
"<absolute path to some certificate file> OR") < 0)
goto fail;
if (IniFile_SetKeyValueString(ini, section_certificates, key_cert_content,
"<Contents of some certificate file in PEM format>") < 0)
goto fail;
if (IniFile_SetKeyValueString(ini, section_certificates, key_private_key_file,
"<absolute path to some private key file> OR") < 0)
goto fail;
if (IniFile_SetKeyValueString(ini, section_certificates, key_private_key_content,
"<Contents of some private key file in PEM format>") < 0)
goto fail;
/* store configuration */
if (IniFile_WriteFile(ini, file) < 0)
goto fail;
rc = TRUE;
fail:
IniFile_Free(ini);
return rc;
}
proxyConfig* pf_server_config_load_buffer(const char* buffer)
{
proxyConfig* config = NULL;
wIniFile* ini = NULL;
ini = IniFile_New();
if (!ini)
{
WLog_ERR(TAG, "IniFile_New() failed!");
return NULL;
}
if (IniFile_ReadBuffer(ini, buffer) < 0)
{
WLog_ERR(TAG, "failed to parse ini: '%s'", buffer);
goto out;
}
config = server_config_load_ini(ini);
out:
IniFile_Free(ini);
return config;
}
proxyConfig* pf_server_config_load_file(const char* path)
{
proxyConfig* config = NULL;
wIniFile* ini = IniFile_New();
if (!ini)
{
WLog_ERR(TAG, "IniFile_New() failed!");
return NULL;
}
if (IniFile_ReadFile(ini, path) < 0)
{
WLog_ERR(TAG, "failed to parse ini file: '%s'", path);
goto out;
}
config = server_config_load_ini(ini);
out:
IniFile_Free(ini);
return config;
}
static void pf_server_config_print_list(char** list, size_t count)
{
WINPR_ASSERT(list);
for (size_t i = 0; i < count; i++)
WLog_INFO(TAG, "\t\t- %s", list[i]);
}
void pf_server_config_print(const proxyConfig* config)
{
WINPR_ASSERT(config);
WLog_INFO(TAG, "Proxy configuration:");
CONFIG_PRINT_SECTION(section_server);
CONFIG_PRINT_STR(config, Host);
CONFIG_PRINT_UINT16(config, Port);
if (config->FixedTarget)
{
CONFIG_PRINT_SECTION(section_target);
CONFIG_PRINT_STR(config, TargetHost);
CONFIG_PRINT_UINT16(config, TargetPort);
CONFIG_PRINT_UINT32(config, TargetTlsSecLevel);
if (config->TargetUser)
CONFIG_PRINT_STR(config, TargetUser);
if (config->TargetDomain)
CONFIG_PRINT_STR(config, TargetDomain);
}
CONFIG_PRINT_SECTION(section_input);
CONFIG_PRINT_BOOL(config, Keyboard);
CONFIG_PRINT_BOOL(config, Mouse);
CONFIG_PRINT_BOOL(config, Multitouch);
CONFIG_PRINT_SECTION(section_security);
CONFIG_PRINT_BOOL(config, ServerNlaSecurity);
CONFIG_PRINT_BOOL(config, ServerTlsSecurity);
CONFIG_PRINT_BOOL(config, ServerRdpSecurity);
CONFIG_PRINT_BOOL(config, ClientNlaSecurity);
CONFIG_PRINT_BOOL(config, ClientTlsSecurity);
CONFIG_PRINT_BOOL(config, ClientRdpSecurity);
CONFIG_PRINT_BOOL(config, ClientAllowFallbackToTls);
CONFIG_PRINT_SECTION(section_channels);
CONFIG_PRINT_BOOL(config, GFX);
CONFIG_PRINT_BOOL(config, DisplayControl);
CONFIG_PRINT_BOOL(config, Clipboard);
CONFIG_PRINT_BOOL(config, AudioOutput);
CONFIG_PRINT_BOOL(config, AudioInput);
CONFIG_PRINT_BOOL(config, DeviceRedirection);
CONFIG_PRINT_BOOL(config, VideoRedirection);
CONFIG_PRINT_BOOL(config, CameraRedirection);
CONFIG_PRINT_BOOL(config, RemoteApp);
CONFIG_PRINT_BOOL(config, PassthroughIsBlacklist);
if (config->PassthroughCount)
{
WLog_INFO(TAG, "\tStatic Channels Proxy:");
pf_server_config_print_list(config->Passthrough, config->PassthroughCount);
}
if (config->InterceptCount)
{
WLog_INFO(TAG, "\tStatic Channels Proxy-Intercept:");
pf_server_config_print_list(config->Intercept, config->InterceptCount);
}
CONFIG_PRINT_SECTION(section_clipboard);
CONFIG_PRINT_BOOL(config, TextOnly);
if (config->MaxTextLength > 0)
CONFIG_PRINT_UINT32(config, MaxTextLength);
CONFIG_PRINT_SECTION(section_gfx_settings);
CONFIG_PRINT_BOOL(config, DecodeGFX);
/* modules */
CONFIG_PRINT_SECTION_KEY(section_plugins, key_plugins_modules);
for (size_t x = 0; x < config->ModulesCount; x++)
CONFIG_PRINT_STR(config, Modules[x]);
/* Required plugins */
CONFIG_PRINT_SECTION_KEY(section_plugins, key_plugins_required);
for (size_t x = 0; x < config->RequiredPluginsCount; x++)
CONFIG_PRINT_STR(config, RequiredPlugins[x]);
CONFIG_PRINT_SECTION(section_certificates);
CONFIG_PRINT_STR(config, CertificateFile);
CONFIG_PRINT_STR_CONTENT(config, CertificateContent);
CONFIG_PRINT_STR(config, PrivateKeyFile);
CONFIG_PRINT_STR_CONTENT(config, PrivateKeyContent);
}
void pf_server_config_free(proxyConfig* config)
{
if (config == NULL)
return;
free(config->Passthrough);
free(config->Intercept);
free(config->RequiredPlugins);
free(config->Modules);
free(config->TargetHost);
free(config->Host);
free(config->CertificateFile);
free(config->CertificateContent);
if (config->CertificatePEM)
memset(config->CertificatePEM, 0, config->CertificatePEMLength);
free(config->CertificatePEM);
free(config->PrivateKeyFile);
free(config->PrivateKeyContent);
if (config->PrivateKeyPEM)
memset(config->PrivateKeyPEM, 0, config->PrivateKeyPEMLength);
free(config->PrivateKeyPEM);
IniFile_Free(config->ini);
free(config);
}
size_t pf_config_required_plugins_count(const proxyConfig* config)
{
WINPR_ASSERT(config);
return config->RequiredPluginsCount;
}
const char* pf_config_required_plugin(const proxyConfig* config, size_t index)
{
WINPR_ASSERT(config);
if (index >= config->RequiredPluginsCount)
return NULL;
return config->RequiredPlugins[index];
}
size_t pf_config_modules_count(const proxyConfig* config)
{
WINPR_ASSERT(config);
return config->ModulesCount;
}
const char** pf_config_modules(const proxyConfig* config)
{
union
{
char** ppc;
const char** cppc;
} cnv;
WINPR_ASSERT(config);
cnv.ppc = config->Modules;
return cnv.cppc;
}
static BOOL pf_config_copy_string(char** dst, const char* src)
{
*dst = NULL;
if (src)
*dst = _strdup(src);
return TRUE;
}
static BOOL pf_config_copy_string_n(char** dst, const char* src, size_t size)
{
*dst = NULL;
if (src && (size > 0))
{
WINPR_ASSERT(strnlen(src, size) == size - 1);
*dst = calloc(size, sizeof(char));
if (!*dst)
return FALSE;
memcpy(*dst, src, size);
}
return TRUE;
}
static BOOL pf_config_copy_string_list(char*** dst, size_t* size, char** src, size_t srcSize)
{
WINPR_ASSERT(dst);
WINPR_ASSERT(size);
WINPR_ASSERT(src || (srcSize == 0));
*dst = NULL;
*size = 0;
if (srcSize == 0)
return TRUE;
{
char* csv = CommandLineToCommaSeparatedValues(srcSize, src);
*dst = CommandLineParseCommaSeparatedValues(csv, size);
free(csv);
}
return TRUE;
}
BOOL pf_config_clone(proxyConfig** dst, const proxyConfig* config)
{
proxyConfig* tmp = calloc(1, sizeof(proxyConfig));
WINPR_ASSERT(dst);
WINPR_ASSERT(config);
if (!tmp)
return FALSE;
*tmp = *config;
if (!pf_config_copy_string(&tmp->Host, config->Host))
goto fail;
if (!pf_config_copy_string(&tmp->TargetHost, config->TargetHost))
goto fail;
if (!pf_config_copy_string_list(&tmp->Passthrough, &tmp->PassthroughCount, config->Passthrough,
config->PassthroughCount))
goto fail;
if (!pf_config_copy_string_list(&tmp->Intercept, &tmp->InterceptCount, config->Intercept,
config->InterceptCount))
goto fail;
if (!pf_config_copy_string_list(&tmp->Modules, &tmp->ModulesCount, config->Modules,
config->ModulesCount))
goto fail;
if (!pf_config_copy_string_list(&tmp->RequiredPlugins, &tmp->RequiredPluginsCount,
config->RequiredPlugins, config->RequiredPluginsCount))
goto fail;
if (!pf_config_copy_string(&tmp->CertificateFile, config->CertificateFile))
goto fail;
if (!pf_config_copy_string(&tmp->CertificateContent, config->CertificateContent))
goto fail;
if (!pf_config_copy_string_n(&tmp->CertificatePEM, config->CertificatePEM,
config->CertificatePEMLength))
goto fail;
if (!pf_config_copy_string(&tmp->PrivateKeyFile, config->PrivateKeyFile))
goto fail;
if (!pf_config_copy_string(&tmp->PrivateKeyContent, config->PrivateKeyContent))
goto fail;
if (!pf_config_copy_string_n(&tmp->PrivateKeyPEM, config->PrivateKeyPEM,
config->PrivateKeyPEMLength))
goto fail;
tmp->ini = IniFile_Clone(config->ini);
if (!tmp->ini)
goto fail;
*dst = tmp;
return TRUE;
fail:
pf_server_config_free(tmp);
return FALSE;
}
struct config_plugin_data
{
proxyPluginsManager* mgr;
const proxyConfig* config;
};
static const char config_plugin_name[] = "config";
static const char config_plugin_desc[] =
"A plugin filtering according to proxy configuration file rules";
static BOOL config_plugin_unload(proxyPlugin* plugin)
{
WINPR_ASSERT(plugin);
/* Here we have to free up our custom data storage. */
if (plugin)
{
free(plugin->custom);
plugin->custom = NULL;
}
return TRUE;
}
static BOOL config_plugin_keyboard_event(proxyPlugin* plugin, proxyData* pdata, void* param)
{
BOOL rc = 0;
const struct config_plugin_data* custom = NULL;
const proxyConfig* cfg = NULL;
const proxyKeyboardEventInfo* event_data = (const proxyKeyboardEventInfo*)(param);
WINPR_ASSERT(plugin);
WINPR_ASSERT(pdata);
WINPR_ASSERT(event_data);
WINPR_UNUSED(event_data);
custom = plugin->custom;
WINPR_ASSERT(custom);
cfg = custom->config;
WINPR_ASSERT(cfg);
rc = cfg->Keyboard;
WLog_DBG(TAG, "%s", boolstr(rc));
return rc;
}
static BOOL config_plugin_unicode_event(proxyPlugin* plugin, proxyData* pdata, void* param)
{
BOOL rc = 0;
const struct config_plugin_data* custom = NULL;
const proxyConfig* cfg = NULL;
const proxyUnicodeEventInfo* event_data = (const proxyUnicodeEventInfo*)(param);
WINPR_ASSERT(plugin);
WINPR_ASSERT(pdata);
WINPR_ASSERT(event_data);
WINPR_UNUSED(event_data);
custom = plugin->custom;
WINPR_ASSERT(custom);
cfg = custom->config;
WINPR_ASSERT(cfg);
rc = cfg->Keyboard;
WLog_DBG(TAG, "%s", boolstr(rc));
return rc;
}
static BOOL config_plugin_mouse_event(proxyPlugin* plugin, proxyData* pdata, void* param)
{
BOOL rc = 0;
const struct config_plugin_data* custom = NULL;
const proxyConfig* cfg = NULL;
const proxyMouseEventInfo* event_data = (const proxyMouseEventInfo*)(param);
WINPR_ASSERT(plugin);
WINPR_ASSERT(pdata);
WINPR_ASSERT(event_data);
WINPR_UNUSED(event_data);
custom = plugin->custom;
WINPR_ASSERT(custom);
cfg = custom->config;
WINPR_ASSERT(cfg);
rc = cfg->Mouse;
return rc;
}
static BOOL config_plugin_mouse_ex_event(proxyPlugin* plugin, proxyData* pdata, void* param)
{
BOOL rc = 0;
const struct config_plugin_data* custom = NULL;
const proxyConfig* cfg = NULL;
const proxyMouseExEventInfo* event_data = (const proxyMouseExEventInfo*)(param);
WINPR_ASSERT(plugin);
WINPR_ASSERT(pdata);
WINPR_ASSERT(event_data);
WINPR_UNUSED(event_data);
custom = plugin->custom;
WINPR_ASSERT(custom);
cfg = custom->config;
WINPR_ASSERT(cfg);
rc = cfg->Mouse;
return rc;
}
static BOOL config_plugin_client_channel_data(proxyPlugin* plugin, proxyData* pdata, void* param)
{
const proxyChannelDataEventInfo* channel = (const proxyChannelDataEventInfo*)(param);
WINPR_ASSERT(plugin);
WINPR_ASSERT(pdata);
WINPR_ASSERT(channel);
WLog_DBG(TAG, "%s [0x%04" PRIx16 "] got %" PRIuz, channel->channel_name, channel->channel_id,
channel->data_len);
return TRUE;
}
static BOOL config_plugin_server_channel_data(proxyPlugin* plugin, proxyData* pdata, void* param)
{
const proxyChannelDataEventInfo* channel = (const proxyChannelDataEventInfo*)(param);
WINPR_ASSERT(plugin);
WINPR_ASSERT(pdata);
WINPR_ASSERT(channel);
WLog_DBG(TAG, "%s [0x%04" PRIx16 "] got %" PRIuz, channel->channel_name, channel->channel_id,
channel->data_len);
return TRUE;
}
static BOOL config_plugin_dynamic_channel_create(proxyPlugin* plugin, proxyData* pdata, void* param)
{
BOOL accept = 0;
const proxyChannelDataEventInfo* channel = (const proxyChannelDataEventInfo*)(param);
WINPR_ASSERT(plugin);
WINPR_ASSERT(pdata);
WINPR_ASSERT(channel);
const struct config_plugin_data* custom = plugin->custom;
WINPR_ASSERT(custom);
const proxyConfig* cfg = custom->config;
WINPR_ASSERT(cfg);
pf_utils_channel_mode rc = pf_utils_get_channel_mode(cfg, channel->channel_name);
switch (rc)
{
case PF_UTILS_CHANNEL_INTERCEPT:
case PF_UTILS_CHANNEL_PASSTHROUGH:
accept = TRUE;
break;
case PF_UTILS_CHANNEL_BLOCK:
default:
accept = FALSE;
break;
}
if (accept)
{
if (strncmp(RDPGFX_DVC_CHANNEL_NAME, channel->channel_name,
sizeof(RDPGFX_DVC_CHANNEL_NAME)) == 0)
accept = cfg->GFX;
else if (strncmp(RDPSND_DVC_CHANNEL_NAME, channel->channel_name,
sizeof(RDPSND_DVC_CHANNEL_NAME)) == 0)
accept = cfg->AudioOutput;
else if (strncmp(RDPSND_LOSSY_DVC_CHANNEL_NAME, channel->channel_name,
sizeof(RDPSND_LOSSY_DVC_CHANNEL_NAME)) == 0)
accept = cfg->AudioOutput;
else if (strncmp(AUDIN_DVC_CHANNEL_NAME, channel->channel_name,
sizeof(AUDIN_DVC_CHANNEL_NAME)) == 0)
accept = cfg->AudioInput;
else if (strncmp(RDPEI_DVC_CHANNEL_NAME, channel->channel_name,
sizeof(RDPEI_DVC_CHANNEL_NAME)) == 0)
accept = cfg->Multitouch;
else if (strncmp(TSMF_DVC_CHANNEL_NAME, channel->channel_name,
sizeof(TSMF_DVC_CHANNEL_NAME)) == 0)
accept = cfg->VideoRedirection;
else if (strncmp(VIDEO_CONTROL_DVC_CHANNEL_NAME, channel->channel_name,
sizeof(VIDEO_CONTROL_DVC_CHANNEL_NAME)) == 0)
accept = cfg->VideoRedirection;
else if (strncmp(VIDEO_DATA_DVC_CHANNEL_NAME, channel->channel_name,
sizeof(VIDEO_DATA_DVC_CHANNEL_NAME)) == 0)
accept = cfg->VideoRedirection;
else if (strncmp(RDPECAM_DVC_CHANNEL_NAME, channel->channel_name,
sizeof(RDPECAM_DVC_CHANNEL_NAME)) == 0)
accept = cfg->CameraRedirection;
}
WLog_DBG(TAG, "%s [0x%04" PRIx16 "]: %s", channel->channel_name, channel->channel_id,
boolstr(accept));
return accept;
}
static BOOL config_plugin_channel_create(proxyPlugin* plugin, proxyData* pdata, void* param)
{
BOOL accept = 0;
const proxyChannelDataEventInfo* channel = (const proxyChannelDataEventInfo*)(param);
WINPR_ASSERT(plugin);
WINPR_ASSERT(pdata);
WINPR_ASSERT(channel);
const struct config_plugin_data* custom = plugin->custom;
WINPR_ASSERT(custom);
const proxyConfig* cfg = custom->config;
WINPR_ASSERT(cfg);
pf_utils_channel_mode rc = pf_utils_get_channel_mode(cfg, channel->channel_name);
switch (rc)
{
case PF_UTILS_CHANNEL_INTERCEPT:
case PF_UTILS_CHANNEL_PASSTHROUGH:
accept = TRUE;
break;
case PF_UTILS_CHANNEL_BLOCK:
default:
accept = FALSE;
break;
}
if (accept)
{
if (strncmp(CLIPRDR_SVC_CHANNEL_NAME, channel->channel_name,
sizeof(CLIPRDR_SVC_CHANNEL_NAME)) == 0)
accept = cfg->Clipboard;
else if (strncmp(RDPSND_CHANNEL_NAME, channel->channel_name, sizeof(RDPSND_CHANNEL_NAME)) ==
0)
accept = cfg->AudioOutput;
else if (strncmp(RDPDR_SVC_CHANNEL_NAME, channel->channel_name,
sizeof(RDPDR_SVC_CHANNEL_NAME)) == 0)
accept = cfg->DeviceRedirection;
else if (strncmp(DISP_DVC_CHANNEL_NAME, channel->channel_name,
sizeof(DISP_DVC_CHANNEL_NAME)) == 0)
accept = cfg->DisplayControl;
else if (strncmp(RAIL_SVC_CHANNEL_NAME, channel->channel_name,
sizeof(RAIL_SVC_CHANNEL_NAME)) == 0)
accept = cfg->RemoteApp;
}
WLog_DBG(TAG, "%s [static]: %s", channel->channel_name, boolstr(accept));
return accept;
}
BOOL pf_config_plugin(proxyPluginsManager* plugins_manager, void* userdata)
{
struct config_plugin_data* custom = NULL;
proxyPlugin plugin = { 0 };
plugin.name = config_plugin_name;
plugin.description = config_plugin_desc;
plugin.PluginUnload = config_plugin_unload;
plugin.KeyboardEvent = config_plugin_keyboard_event;
plugin.UnicodeEvent = config_plugin_unicode_event;
plugin.MouseEvent = config_plugin_mouse_event;
plugin.MouseExEvent = config_plugin_mouse_ex_event;
plugin.ClientChannelData = config_plugin_client_channel_data;
plugin.ServerChannelData = config_plugin_server_channel_data;
plugin.ChannelCreate = config_plugin_channel_create;
plugin.DynamicChannelCreate = config_plugin_dynamic_channel_create;
plugin.userdata = userdata;
custom = calloc(1, sizeof(struct config_plugin_data));
if (!custom)
return FALSE;
custom->mgr = plugins_manager;
custom->config = userdata;
plugin.custom = custom;
plugin.userdata = userdata;
return plugins_manager->RegisterPlugin(plugins_manager, &plugin);
}
const char* pf_config_get(const proxyConfig* config, const char* section, const char* key)
{
WINPR_ASSERT(config);
WINPR_ASSERT(config->ini);
WINPR_ASSERT(section);
WINPR_ASSERT(key);
return IniFile_GetKeyValueString(config->ini, section, key);
}
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