Enhance kdmtsak to work with kdeinit launched processes

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdebase@1253835 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

kdmlib/kdmtsak.cpp

@@ -46,6 +46,7 @@ int main (int argc, char *argv[])
 	int mPipe_fd;
 	char readbuf[128];
 	int numread;
+	bool authorized = false;
 
 	pid_t parentproc = getppid();
 #ifdef DEBUG
@@ -76,7 +77,63 @@ int main (int argc, char *argv[])
 #ifdef DEBUG
 		printf("Parent executable name is: %s\n\r", procparent.ascii());
 #endif
-		if ((procparent == "ksmserver") || (procparent == "kdesktop_lock") || (procparent == "kdm")) {
+		if ((procparent == "kdesktop") || (procparent == "kdesktop_lock") || (procparent == "kdm")) {
+			authorized = true;
+		}
+		else if (procparent == "kdeinit") {
+			printf("kdeinit detected\n\r");
+			// A bit more digging is needed to see if this is an authorized process or not
+			// Get the kdeinit command
+			char kdeinitcmdline[8192];
+			FILE *fp = fopen(TQString("/proc/%1/cmdline").arg(parentproc).ascii(),"r");
+			if (fp != NULL) {
+				if (fgets (kdeinitcmdline, 8192, fp) != NULL)
+				fclose (fp);
+			}
+			kdeinitcmdline[8191] = 0;
+			TQString kdeinitCommand = kdeinitcmdline;
+
+			// Also get the environment, specifically the path
+			TQString kdeinitEnvironment;
+			char kdeinitenviron[8192];
+			fp = fopen(TQString("/proc/%1/environ").arg(parentproc).ascii(),"r");
+			if (fp != NULL) {
+				int c;
+				int pos = 0;
+				do {
+					c = fgetc(fp);
+					kdeinitenviron[pos] = c;
+					pos++;
+					if (c == 0) {
+						TQString curEnvLine = kdeinitenviron;
+						if (curEnvLine.startsWith("PATH=")) {
+							kdeinitEnvironment = curEnvLine.mid(5);
+						}
+						pos = 0;
+					}
+				} while ((c != EOF) && (pos < 8192));
+				fclose (fp);
+			}
+			kdeinitenviron[8191] = 0;
+
+#ifdef DEBUG
+			printf("Called executable name is: %s\n\r", kdeinitCommand.ascii());
+			printf("Environment is: %s\n\r", kdeinitEnvironment.ascii());
+#endif
+
+			if ((kdeinitCommand == "kdesktop [kdeinit]") && (kdeinitEnvironment.startsWith(KDE_BINDIR))) {
+				authorized = true;
+			}
+			else {
+				return 4;
+			}
+		}
+		else {
+			printf("Unauthorized calling process detected\n\r");
+			return 3;
+		}
+
+		if (authorized == true) {
 			// OK, the calling process is authorized to retrieve SAK data
 			// First, flush the buffer
 			mPipe_fd = open(FIFO_FILE, O_RDWR | O_NONBLOCK);
@@ -98,12 +155,9 @@ int main (int argc, char *argv[])
 					return 1;
 				}
 			}
-		}
-		else {
-			printf("Unauthorized calling process detected\n\r");
-			return 3;
+			return 6;
 		}
 	}
 
-	return 4;
+	return 5;
 }