FreeRDP/channels/client/addin.c

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/**
* FreeRDP: A Remote Desktop Protocol Implementation
* Channel Addins
*
* Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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* Copyright 2015 Thincast Technologies GmbH
* Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <winpr/crt.h>
#include <winpr/path.h>
#include <winpr/file.h>
#include <winpr/synch.h>
#include <winpr/library.h>
#include <winpr/collections.h>
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#include <freerdp/addin.h>
#include <freerdp/build-config.h>
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#include <freerdp/client/channels.h>
#include "tables.h"
#include "addin.h"
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#include <freerdp/channels/log.h>
#define TAG CHANNELS_TAG("addin")
extern const STATIC_ENTRY_TABLE CLIENT_STATIC_ENTRY_TABLES[];
void* freerdp_channels_find_static_entry_in_table(const STATIC_ENTRY_TABLE* table,
const char* identifier)
{
int index = 0;
STATIC_ENTRY* pEntry;
pEntry = (STATIC_ENTRY*) &table->table[index++];
while (pEntry->entry != NULL)
{
if (strcmp(pEntry->name, identifier) == 0)
{
return (void*) pEntry->entry;
}
pEntry = (STATIC_ENTRY*) &table->table[index++];
}
return NULL;
}
void* freerdp_channels_client_find_static_entry(const char* name, const char* identifier)
{
int index = 0;
STATIC_ENTRY_TABLE* pEntry;
pEntry = (STATIC_ENTRY_TABLE*) &CLIENT_STATIC_ENTRY_TABLES[index++];
while (pEntry->table != NULL)
{
if (strcmp(pEntry->name, name) == 0)
{
return freerdp_channels_find_static_entry_in_table(pEntry, identifier);
}
pEntry = (STATIC_ENTRY_TABLE*) &CLIENT_STATIC_ENTRY_TABLES[index++];
}
return NULL;
}
extern const STATIC_ADDIN_TABLE CLIENT_STATIC_ADDIN_TABLE[];
FREERDP_ADDIN** freerdp_channels_list_client_static_addins(LPSTR pszName, LPSTR pszSubsystem,
LPSTR pszType, DWORD dwFlags)
{
int i, j;
DWORD nAddins;
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FREERDP_ADDIN* pAddin = NULL;
FREERDP_ADDIN** ppAddins = NULL;
STATIC_SUBSYSTEM_ENTRY* subsystems;
nAddins = 0;
ppAddins = (FREERDP_ADDIN**) calloc(128, sizeof(FREERDP_ADDIN*));
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if (!ppAddins)
{
WLog_ERR(TAG, "calloc failed!");
return NULL;
}
ppAddins[nAddins] = NULL;
for (i = 0; CLIENT_STATIC_ADDIN_TABLE[i].name != NULL; i++)
{
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pAddin = (FREERDP_ADDIN*) calloc(1, sizeof(FREERDP_ADDIN));
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if (!pAddin)
{
WLog_ERR(TAG, "calloc failed!");
goto error_out;
}
strcpy(pAddin->cName, CLIENT_STATIC_ADDIN_TABLE[i].name);
pAddin->dwFlags = FREERDP_ADDIN_CLIENT;
pAddin->dwFlags |= FREERDP_ADDIN_STATIC;
pAddin->dwFlags |= FREERDP_ADDIN_NAME;
ppAddins[nAddins++] = pAddin;
subsystems = (STATIC_SUBSYSTEM_ENTRY*) CLIENT_STATIC_ADDIN_TABLE[i].table;
for (j = 0; subsystems[j].name != NULL; j++)
{
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pAddin = (FREERDP_ADDIN*) calloc(1, sizeof(FREERDP_ADDIN));
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if (!pAddin)
{
WLog_ERR(TAG, "calloc failed!");
goto error_out;
}
strcpy(pAddin->cName, CLIENT_STATIC_ADDIN_TABLE[i].name);
strcpy(pAddin->cSubsystem, subsystems[j].name);
pAddin->dwFlags = FREERDP_ADDIN_CLIENT;
pAddin->dwFlags |= FREERDP_ADDIN_STATIC;
pAddin->dwFlags |= FREERDP_ADDIN_NAME;
pAddin->dwFlags |= FREERDP_ADDIN_SUBSYSTEM;
ppAddins[nAddins++] = pAddin;
}
}
return ppAddins;
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error_out:
freerdp_channels_addin_list_free(ppAddins);
return NULL;
}
FREERDP_ADDIN** freerdp_channels_list_dynamic_addins(LPSTR pszName, LPSTR pszSubsystem,
LPSTR pszType, DWORD dwFlags)
{
int index;
int nDashes;
HANDLE hFind;
DWORD nAddins;
LPSTR pszPattern;
size_t cchPattern;
LPCSTR pszAddinPath = FREERDP_ADDIN_PATH;
LPCSTR pszInstallPrefix = FREERDP_INSTALL_PREFIX;
LPCSTR pszExtension;
LPSTR pszSearchPath;
size_t cchSearchPath;
size_t cchAddinPath;
size_t cchInstallPrefix;
FREERDP_ADDIN** ppAddins;
WIN32_FIND_DATAA FindData;
cchAddinPath = strlen(pszAddinPath);
cchInstallPrefix = strlen(pszInstallPrefix);
pszExtension = PathGetSharedLibraryExtensionA(0);
cchPattern = 128 + strlen(pszExtension) + 2;
pszPattern = (LPSTR) malloc(cchPattern + 1);
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if (!pszPattern)
{
WLog_ERR(TAG, "malloc failed!");
return NULL;
}
if (pszName && pszSubsystem && pszType)
{
sprintf_s(pszPattern, cchPattern, FREERDP_SHARED_LIBRARY_PREFIX"%s-client-%s-%s.%s",
pszName, pszSubsystem, pszType, pszExtension);
}
else if (pszName && pszType)
{
sprintf_s(pszPattern, cchPattern, FREERDP_SHARED_LIBRARY_PREFIX"%s-client-?-%s.%s",
pszName, pszType, pszExtension);
}
else if (pszName)
{
sprintf_s(pszPattern, cchPattern, FREERDP_SHARED_LIBRARY_PREFIX"%s-client*.%s",
pszName, pszExtension);
}
else
{
sprintf_s(pszPattern, cchPattern, FREERDP_SHARED_LIBRARY_PREFIX"?-client*.%s",
pszExtension);
}
cchPattern = strlen(pszPattern);
cchSearchPath = cchInstallPrefix + cchAddinPath + cchPattern + 3;
pszSearchPath = (LPSTR) malloc(cchSearchPath + 1);
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if (!pszSearchPath)
{
WLog_ERR(TAG, "malloc failed!");
free(pszPattern);
return NULL;
}
CopyMemory(pszSearchPath, pszInstallPrefix, cchInstallPrefix);
pszSearchPath[cchInstallPrefix] = '\0';
NativePathCchAppendA(pszSearchPath, cchSearchPath + 1, pszAddinPath);
NativePathCchAppendA(pszSearchPath, cchSearchPath + 1, pszPattern);
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free(pszPattern);
hFind = FindFirstFileA(pszSearchPath, &FindData);
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free(pszSearchPath);
nAddins = 0;
ppAddins = (FREERDP_ADDIN**) calloc(128, sizeof(FREERDP_ADDIN*));
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if (!ppAddins)
{
WLog_ERR(TAG, "calloc failed!");
return NULL;
}
if (hFind == INVALID_HANDLE_VALUE)
return ppAddins;
do
{
char* p[5];
FREERDP_ADDIN* pAddin;
nDashes = 0;
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pAddin = (FREERDP_ADDIN*) calloc(1, sizeof(FREERDP_ADDIN));
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if (!pAddin)
{
WLog_ERR(TAG, "calloc failed!");
goto error_out;
}
for (index = 0; FindData.cFileName[index]; index++)
nDashes += (FindData.cFileName[index] == '-') ? 1 : 0;
if (nDashes == 1)
{
/* <name>-client.<extension> */
p[0] = FindData.cFileName;
p[1] = strchr(p[0], '-') + 1;
strncpy(pAddin->cName, p[0], (p[1] - p[0]) - 1);
pAddin->dwFlags = FREERDP_ADDIN_CLIENT;
pAddin->dwFlags |= FREERDP_ADDIN_DYNAMIC;
pAddin->dwFlags |= FREERDP_ADDIN_NAME;
ppAddins[nAddins++] = pAddin;
}
else if (nDashes == 2)
{
/* <name>-client-<subsystem>.<extension> */
p[0] = FindData.cFileName;
p[1] = strchr(p[0], '-') + 1;
p[2] = strchr(p[1], '-') + 1;
p[3] = strchr(p[2], '.') + 1;
strncpy(pAddin->cName, p[0], (p[1] - p[0]) - 1);
strncpy(pAddin->cSubsystem, p[2], (p[3] - p[2]) - 1);
pAddin->dwFlags = FREERDP_ADDIN_CLIENT;
pAddin->dwFlags |= FREERDP_ADDIN_DYNAMIC;
pAddin->dwFlags |= FREERDP_ADDIN_NAME;
pAddin->dwFlags |= FREERDP_ADDIN_SUBSYSTEM;
ppAddins[nAddins++] = pAddin;
}
else if (nDashes == 3)
{
/* <name>-client-<subsystem>-<type>.<extension> */
p[0] = FindData.cFileName;
p[1] = strchr(p[0], '-') + 1;
p[2] = strchr(p[1], '-') + 1;
p[3] = strchr(p[2], '-') + 1;
p[4] = strchr(p[3], '.') + 1;
strncpy(pAddin->cName, p[0], (p[1] - p[0]) - 1);
strncpy(pAddin->cSubsystem, p[2], (p[3] - p[2]) - 1);
strncpy(pAddin->cType, p[3], (p[4] - p[3]) - 1);
pAddin->dwFlags = FREERDP_ADDIN_CLIENT;
pAddin->dwFlags |= FREERDP_ADDIN_DYNAMIC;
pAddin->dwFlags |= FREERDP_ADDIN_NAME;
pAddin->dwFlags |= FREERDP_ADDIN_SUBSYSTEM;
pAddin->dwFlags |= FREERDP_ADDIN_TYPE;
ppAddins[nAddins++] = pAddin;
}
else
{
free(pAddin);
}
}
while (FindNextFileA(hFind, &FindData));
FindClose(hFind);
ppAddins[nAddins] = NULL;
return ppAddins;
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error_out:
freerdp_channels_addin_list_free(ppAddins);
return NULL;
}
FREERDP_ADDIN** freerdp_channels_list_addins(LPSTR pszName, LPSTR pszSubsystem, LPSTR pszType,
DWORD dwFlags)
{
if (dwFlags & FREERDP_ADDIN_STATIC)
return freerdp_channels_list_client_static_addins(pszName, pszSubsystem, pszType, dwFlags);
else if (dwFlags & FREERDP_ADDIN_DYNAMIC)
return freerdp_channels_list_dynamic_addins(pszName, pszSubsystem, pszType, dwFlags);
return NULL;
}
void freerdp_channels_addin_list_free(FREERDP_ADDIN** ppAddins)
{
int index;
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if (!ppAddins)
return;
for (index = 0; ppAddins[index] != NULL; index++)
free(ppAddins[index]);
free(ppAddins);
}
extern const STATIC_ENTRY CLIENT_VirtualChannelEntryEx_TABLE[];
BOOL freerdp_channels_is_virtual_channel_entry_ex(LPCSTR pszName)
{
int i;
STATIC_ENTRY* entry;
for (i = 0; CLIENT_VirtualChannelEntryEx_TABLE[i].name != NULL; i++)
{
entry = (STATIC_ENTRY*) &CLIENT_VirtualChannelEntryEx_TABLE[i];
if (!strcmp(entry->name, pszName))
return TRUE;
}
return FALSE;
}
PVIRTUALCHANNELENTRY freerdp_channels_load_static_addin_entry(LPCSTR pszName, LPSTR pszSubsystem,
LPSTR pszType, DWORD dwFlags)
{
int i, j;
STATIC_SUBSYSTEM_ENTRY* subsystems;
for (i = 0; CLIENT_STATIC_ADDIN_TABLE[i].name != NULL; i++)
{
if (strcmp(CLIENT_STATIC_ADDIN_TABLE[i].name, pszName) == 0)
{
if (pszSubsystem != NULL)
{
subsystems = (STATIC_SUBSYSTEM_ENTRY*) CLIENT_STATIC_ADDIN_TABLE[i].table;
for (j = 0; subsystems[j].name != NULL; j++)
{
if (strcmp(subsystems[j].name, pszSubsystem) == 0)
{
if (pszType)
{
if (strcmp(subsystems[j].type, pszType) == 0)
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return (PVIRTUALCHANNELENTRY) subsystems[j].entry;
}
else
{
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return (PVIRTUALCHANNELENTRY) subsystems[j].entry;
}
}
}
}
else
{
if (dwFlags & FREERDP_ADDIN_CHANNEL_ENTRYEX)
{
if (!freerdp_channels_is_virtual_channel_entry_ex(pszName))
return NULL;
}
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return (PVIRTUALCHANNELENTRY) CLIENT_STATIC_ADDIN_TABLE[i].entry;
}
}
}
return NULL;
}