From 35bff96a9ce2ea78beacd98dba537c1a5871dfff Mon Sep 17 00:00:00 2001
From: OBATA Akio <obache@wizdas.com>
Date: Sun, 9 Aug 2020 17:34:23 +0900
Subject: [PATCH] Add a knob to use fixed path `iceauth` tool
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`system()` and `popen()` may unsafe unless using absolute command path.
Rely on PATH environment variable set by users may result in unwanted tool.

Signed-off-by: OBATA Akio <obache@wizdas.com>
Signed-off-by: Slávek Banko <slavek.banko@axis.cz>
(cherry picked from commit ac8c8ca54aaed1466255161a3d727dcfade4a7d9)
---
 CMakeLists.txt             | 11 +++++++++++
 config.h.cmake             |  9 +++++++++
 dcop/dcopclient.cpp        | 17 +++++++++++++++--
 dcop/dcopserver_shutdown.c |  2 +-
 kded/khostname.cpp         |  8 +++++---
 kdesu/kdesu_stub.c         |  4 ++--
 6 files changed, 43 insertions(+), 8 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1b7142ca2..9126e82a2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1094,6 +1094,17 @@ if( WITH_HSPELL )
 endif( WITH_HSPELL )
 
 
+##### find tools path ###########################
+
+if( NOT WIN32 AND NOT ICEAUTH_PATH )
+  find_program( ICEAUTH_PATH iceauth )
+  if( ${ICEAUTH_PATH} STREQUAL "ICEAUTH_PATH-NOTFOUND" )
+    tde_message_fatal( "iceauth command was not found in path." )
+  endif()
+  message( STATUS "Found iceauth: ${ICEAUTH_PATH}" )
+endif( NOT WIN32 AND NOT ICEAUTH_PATH )
+
+
 ##### write configure files #####################
 
 configure_file( config.h.cmake config.h )
diff --git a/config.h.cmake b/config.h.cmake
index b4927f631..0bced5c2b 100644
--- a/config.h.cmake
+++ b/config.h.cmake
@@ -909,6 +909,15 @@
 /* Defined if your system has XRandR support */
 #cmakedefine XRANDR_SUPPORT 1
 
+/* Defines the executable of iceauth */
+#cmakedefine ICEAUTH_PATH "@ICEAUTH_PATH@"
+
+#ifdef ICEAUTH_PATH
+# define ICEAUTH_COMMAND ICEAUTH_PATH
+#else
+# define ICEAUTH_COMMAND "iceauth"
+#endif
+
 /*
  * jpeg.h needs HAVE_BOOLEAN, when the system uses boolean in system
  * headers and I'm too lazy to write a configure test as long as only
diff --git a/dcop/dcopclient.cpp b/dcop/dcopclient.cpp
index a64a681f9..ed9594c6a 100644
--- a/dcop/dcopclient.cpp
+++ b/dcop/dcopclient.cpp
@@ -213,13 +213,26 @@ public:
 
 TQCString DCOPClient::iceauthPath()
 {
-#ifdef Q_OS_WIN32
+#if defined(ICEAUTH_PATH)
+    if (
+#       if defined(Q_WS_WIN)
+        access(ICEAUTH_PATH, 0) == 0
+#       else
+        access(ICEAUTH_PATH, X_OK) == 0
+#       endif
+    )
+    {
+        return TQCString(ICEAUTH_PATH);
+    }
+
+#elif defined(Q_OS_WIN32)
 	char	szPath[512];
 	char *	pszFilePart;
 	int		ret;
 	ret = SearchPathA(NULL,"iceauth.exe",NULL,sizeof(szPath)/sizeof(szPath[0]),szPath,&pszFilePart);
 	if(ret != 0)
 		return TQCString(szPath);
+
 #else
     TQCString path = ::getenv("PATH");
     if (path.isEmpty())
@@ -233,9 +246,9 @@ TQCString DCOPClient::iceauthPath()
         {
             return fPath;
         }
-   
         fPath = strtok(NULL, ":\b");
     }
+
 #endif
     return 0;
 }
diff --git a/dcop/dcopserver_shutdown.c b/dcop/dcopserver_shutdown.c
index fb25a86fa..af75c6d5a 100644
--- a/dcop/dcopserver_shutdown.c
+++ b/dcop/dcopserver_shutdown.c
@@ -151,7 +151,7 @@ static void cleanupDCOPsocket(char *buffer)
    if (socket_file)
       unlink(socket_file);
 
-   snprintf(cmd, BUFFER_SIZE, "iceauth remove netid='%s'", buffer);
+   snprintf(cmd, BUFFER_SIZE, ICEAUTH_COMMAND " remove netid='%s'", buffer);
    system(cmd);
 }
 
diff --git a/kded/khostname.cpp b/kded/khostname.cpp
index 9b57e5362..4f75848db 100644
--- a/kded/khostname.cpp
+++ b/kded/khostname.cpp
@@ -16,6 +16,8 @@
  *  Boston, MA 02110-1301, USA.
  **/
 
+#include <config.h>
+
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <unistd.h>
@@ -236,7 +238,7 @@ void KHostName::changeDcop()
       ::symlink(fname.data(), compatLink.data()); // Compatibility link
 
       // Update .ICEauthority
-      TQString cmd = "iceauth list "+KProcess::quote("netid="+oldNetId);
+      TQString cmd = ICEAUTH_COMMAND " list "+KProcess::quote("netid="+oldNetId);
       FILE *iceFile = popen(TQFile::encodeName(cmd), "r");
       if (!iceFile)
       {
@@ -271,7 +273,7 @@ void KHostName::changeDcop()
          if (netId != oldNetId)
             continue;
 
-         cmd = "iceauth add ";
+         cmd = ICEAUTH_COMMAND " add ";
          cmd += KProcess::quote(protName);
          cmd += " '' ";
          cmd += KProcess::quote(newNetId);
@@ -288,7 +290,7 @@ void KHostName::changeDcop()
    char* xauthlocalhostname = getenv("XAUTHLOCALHOSTNAME");
    if (!xauthlocalhostname || !oldNetId.contains(xauthlocalhostname))
    {
-      TQString cmd = "iceauth remove "+KProcess::quote("netid="+oldNetId);
+      TQString cmd = ICEAUTH_COMMAND " remove "+KProcess::quote("netid="+oldNetId);
       system(TQFile::encodeName(cmd));
       unlink(origFName.data());
       origFName = DCOPClient::dcopServerFileOld(oldName); // Compatibility link
diff --git a/kdesu/kdesu_stub.c b/kdesu/kdesu_stub.c
index 8ef7f503e..86c775baf 100644
--- a/kdesu/kdesu_stub.c
+++ b/kdesu/kdesu_stub.c
@@ -367,9 +367,9 @@ int main()
                 close(fd);
 	    xsetenv("ICEAUTHORITY", iceauthority);
 
-	    fout = popen("iceauth >/dev/null 2>&1", "w");
+	    fout = popen(ICEAUTH_COMMAND " >/dev/null 2>&1", "w");
 	    if (!fout) {
-		perror("kdesu_stub: popen iceauth");
+		perror("kdesu_stub: popen " ICEAUTH_COMMAND);
 		exit(1);
 	    }
 	    for (i=0; host[i]; i++)