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Fixed DBus crash because of illegal characters in executable name

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GamesTrap 2023-04-12 00:54:47 +02:00
parent 5842644e2e
commit 8f1ddbb908
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GPG Key ID: 31DFD452434ECDA3
2 changed files with 75 additions and 20 deletions
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89
src/posix_dbus.c
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@ -34,6 +34,7 @@
#include <limits.h> #include <limits.h>
#include <unistd.h> #include <unistd.h>
#include <stdio.h> #include <stdio.h>
#include <ctype.h>
void _glfwInitDBusPOSIX(void) void _glfwInitDBusPOSIX(void)
{ {
@ -114,21 +115,21 @@ void _glfwInitDBusPOSIX(void)
{ {
//Request name //Request name
_glfwCacheExecutableNameDBusPOSIX(); _glfwCacheLegalExecutableNameDBusPOSIX();
if(!_glfw.dbus.executableName) if(!_glfw.dbus.legalExecutableName)
return; return;
//"org.glfw.<exe_name>_<pid>" //"org.glfw.<exe_name>_<pid>"
char* busName = _glfw_calloc(21 + strlen(_glfw.dbus.executableName), sizeof(char)); char* busName = _glfw_calloc(21 + strlen(_glfw.dbus.legalExecutableName), sizeof(char));
if(!busName) if(!busName)
{ {
_glfwInputError(GLFW_OUT_OF_MEMORY, "Failed to allocate memory for bus name"); _glfwInputError(GLFW_OUT_OF_MEMORY, "Failed to allocate memory for bus name");
return; return;
} }
memset(busName, '\0', (21 + strlen(_glfw.dbus.executableName)) * sizeof(char)); memset(busName, '\0', (21 + strlen(_glfw.dbus.legalExecutableName)) * sizeof(char));
const pid_t pid = getpid(); const pid_t pid = getpid();
sprintf(busName, "org.glfw.%s_%d", _glfw.dbus.executableName, pid); sprintf(busName, "org.glfw.%s_%d", _glfw.dbus.legalExecutableName, pid);
const int res = dbus_bus_request_name(_glfw.dbus.connection, busName, DBUS_NAME_FLAG_REPLACE_EXISTING, &_glfw.dbus.error); const int res = dbus_bus_request_name(_glfw.dbus.connection, busName, DBUS_NAME_FLAG_REPLACE_EXISTING, &_glfw.dbus.error);
@ -147,27 +148,28 @@ void _glfwInitDBusPOSIX(void)
} }
} }
_glfwCacheFullExecutableNameDBusPOSIX();
_glfwCacheDesktopFilePathDBusPOSIX(); _glfwCacheDesktopFilePathDBusPOSIX();
_glfwCacheSignalNameDBusPOSIX(); _glfwCacheSignalNameDBusPOSIX();
} }
void _glfwCacheSignalNameDBusPOSIX(void) void _glfwCacheSignalNameDBusPOSIX(void)
{ {
if(!_glfw.dbus.executableName) if(!_glfw.dbus.legalExecutableName)
return; return;
//"/org/glfw/<exe_name>_<pid>" //"/org/glfw/<exe_name>_<pid>"
char* signalName = _glfw_calloc(22 + strlen(_glfw.dbus.executableName), sizeof(char)); char* signalName = _glfw_calloc(22 + strlen(_glfw.dbus.legalExecutableName), sizeof(char));
if(!signalName) if(!signalName)
{ {
_glfwInputError(GLFW_OUT_OF_MEMORY, "Failed to allocate memory for signal name"); _glfwInputError(GLFW_OUT_OF_MEMORY, "Failed to allocate memory for signal name");
return; return;
} }
memset(signalName, '\0', (22 + strlen(_glfw.dbus.executableName)) * sizeof(char)); memset(signalName, '\0', (22 + strlen(_glfw.dbus.legalExecutableName)) * sizeof(char));
const pid_t pid = getpid(); const pid_t pid = getpid();
if(sprintf(signalName, "/org/glfw/%s_%d", _glfw.dbus.executableName, pid) < 0) if(sprintf(signalName, "/org/glfw/%s_%d", _glfw.dbus.legalExecutableName, pid) < 0)
{ {
_glfwInputError(GLFW_PLATFORM, "Failed to create signal name"); _glfwInputError(GLFW_PLATFORM, "Failed to create signal name");
_glfw_free(signalName); _glfw_free(signalName);
@ -177,7 +179,7 @@ void _glfwCacheSignalNameDBusPOSIX(void)
_glfw.dbus.signalName = signalName; _glfw.dbus.signalName = signalName;
} }
void _glfwCacheExecutableNameDBusPOSIX(void) void _glfwCacheFullExecutableNameDBusPOSIX(void)
{ {
char exeName[PATH_MAX]; char exeName[PATH_MAX];
memset(exeName, 0, sizeof(char) * PATH_MAX); memset(exeName, 0, sizeof(char) * PATH_MAX);
@ -204,21 +206,69 @@ void _glfwCacheExecutableNameDBusPOSIX(void)
memset(exeNameFinal, 0, sizeof(char) * (exeNameLength + 1)); memset(exeNameFinal, 0, sizeof(char) * (exeNameLength + 1));
memcpy(exeNameFinal, lastFound + 1, exeNameLength); memcpy(exeNameFinal, (lastFound + 1), exeNameLength);
_glfw.dbus.executableName = exeNameFinal; _glfw.dbus.fullExecutableName = exeNameFinal;
}
void _glfwCacheLegalExecutableNameDBusPOSIX(void)
{
//The executable name is stripped of any illegal characters
//according to the DBus specification
int i = 0;
int validExeNameLength = 0;
int output = 0;
char exeName[PATH_MAX];
memset(exeName, 0, sizeof(char) * PATH_MAX);
if(readlink("/proc/self/exe", exeName, PATH_MAX) == -1)
{
_glfwInputError(GLFW_PLATFORM_ERROR, "Failed to get name of the running executable");
return;
}
char* exeNameEnd = strchr(exeName, '\0');
char* lastFound = strrchr(exeName, '/');
if(!lastFound || !exeNameEnd)
{
_glfwInputError(GLFW_PLATFORM_ERROR, "Failed to get name of the running executable");
return;
}
unsigned int exeNameLength = (exeNameEnd - lastFound) - 1;
for(i = 0; i < exeNameLength; ++i)
{
if(isalnum(*(lastFound + 1 + i)))
validExeNameLength++;
}
char* exeNameFinal = _glfw_calloc(validExeNameLength + 1, sizeof(char));
if(!exeNameFinal)
{
_glfwInputError(GLFW_OUT_OF_MEMORY, "Failed to allocate memory for executable name");
return;
}
memset(exeNameFinal, 0, sizeof(char) * (validExeNameLength + 1));
for(i = 0; i < exeNameLength; ++i)
{
if(isalnum(*(lastFound + 1 + i)))
exeNameFinal[output++] = *(lastFound + 1 + i);
}
_glfw.dbus.legalExecutableName = exeNameFinal;
} }
void _glfwCacheDesktopFilePathDBusPOSIX(void) void _glfwCacheDesktopFilePathDBusPOSIX(void)
{ {
if(!_glfw.dbus.executableName) if(!_glfw.dbus.fullExecutableName)
return; return;
//Cache path of .desktop file //Cache path of .desktop file
//Create our final desktop file uri //Create our final desktop file uri
//"application://<exe_name>.desktop" //"application://<exe_name>.desktop"
unsigned int desktopFileLength = strlen("application://") + strlen(_glfw.dbus.executableName) + strlen(".desktop") + 1; unsigned int desktopFileLength = strlen("application://") + strlen(_glfw.dbus.fullExecutableName) + strlen(".desktop") + 1;
_glfw.dbus.desktopFilePath = _glfw_calloc(desktopFileLength, sizeof(char)); _glfw.dbus.desktopFilePath = _glfw_calloc(desktopFileLength, sizeof(char));
if(!_glfw.dbus.desktopFilePath) if(!_glfw.dbus.desktopFilePath)
{ {
@ -228,8 +278,8 @@ void _glfwCacheDesktopFilePathDBusPOSIX(void)
memset(_glfw.dbus.desktopFilePath, 0, sizeof(char) * desktopFileLength); memset(_glfw.dbus.desktopFilePath, 0, sizeof(char) * desktopFileLength);
strcpy(_glfw.dbus.desktopFilePath, "application://"); strcpy(_glfw.dbus.desktopFilePath, "application://");
memcpy(_glfw.dbus.desktopFilePath + strlen("application://"), _glfw.dbus.executableName, strlen(_glfw.dbus.executableName)); memcpy(_glfw.dbus.desktopFilePath + strlen("application://"), _glfw.dbus.fullExecutableName, strlen(_glfw.dbus.fullExecutableName));
strcpy(_glfw.dbus.desktopFilePath + strlen("application://") + strlen(_glfw.dbus.executableName), ".desktop"); strcpy(_glfw.dbus.desktopFilePath + strlen("application://") + strlen(_glfw.dbus.fullExecutableName), ".desktop");
_glfw.dbus.desktopFilePath[desktopFileLength - 1] = '\0'; _glfw.dbus.desktopFilePath[desktopFileLength - 1] = '\0';
} }
@ -238,8 +288,11 @@ void _glfwTerminateDBusPOSIX(void)
if(_glfw.dbus.signalName) if(_glfw.dbus.signalName)
_glfw_free(_glfw.dbus.signalName); _glfw_free(_glfw.dbus.signalName);
if(_glfw.dbus.executableName) if(_glfw.dbus.legalExecutableName)
_glfw_free(_glfw.dbus.executableName); _glfw_free(_glfw.dbus.legalExecutableName);
if(_glfw.dbus.fullExecutableName)
_glfw_free(_glfw.dbus.fullExecutableName);
if(_glfw.dbus.desktopFilePath) if(_glfw.dbus.desktopFilePath)
_glfw_free(_glfw.dbus.desktopFilePath); _glfw_free(_glfw.dbus.desktopFilePath);

6
src/posix_dbus.h
View File

@ -137,13 +137,15 @@ typedef struct _GLFWDBusPOSIX
struct DBusError error; struct DBusError error;
char* desktopFilePath; char* desktopFilePath;
char* executableName; char* fullExecutableName;
char* legalExecutableName;
char* signalName; char* signalName;
} _GLFWDBusPOSIX; } _GLFWDBusPOSIX;
void _glfwInitDBusPOSIX(void); void _glfwInitDBusPOSIX(void);
void _glfwCacheSignalNameDBusPOSIX(void); void _glfwCacheSignalNameDBusPOSIX(void);
void _glfwCacheExecutableNameDBusPOSIX(void); void _glfwCacheFullExecutableNameDBusPOSIX(void);
void _glfwCacheLegalExecutableNameDBusPOSIX(void);
void _glfwCacheDesktopFilePathDBusPOSIX(void); void _glfwCacheDesktopFilePathDBusPOSIX(void);
void _glfwTerminateDBusPOSIX(void); void _glfwTerminateDBusPOSIX(void);
void _glfwUpdateTaskbarProgressDBusPOSIX(dbus_bool_t progressVisible, double progressValue); void _glfwUpdateTaskbarProgressDBusPOSIX(dbus_bool_t progressVisible, double progressValue);