Fixed handling file names that contain single quotes or dollar signs in calls to external commands

HISTORY

@@ -904,3 +904,6 @@ Video Disk Recorder Revision History
   command to collect the recordings (thanks to Emil Naepflein for his hint about
   this function).
 - Improved speed of setting the Help button texts.
+- Fixed handling file names that contain single quotes (') or dollar signs ($)
+  in the call to the shutdown command (option '-s') and the recording command
+  (option '-r').

recording.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: recording.c 1.44 2002/01/20 16:47:09 kls Exp $
+ * $Id: recording.c 1.45 2002/01/26 11:57:56 kls Exp $
  */
 
 #include "recording.h"
@@ -640,7 +640,7 @@ void cRecordingUserCommand::InvokeCommand(const char *State, const char *Recordi
 {
   if (command) {
      char *cmd;
-     asprintf(&cmd, "%s %s '%s'", command, State, RecordingFileName);
+     asprintf(&cmd, "%s %s \"%s\"", command, State, strescape(RecordingFileName, "\"$"));
      isyslog(LOG_INFO, "executing '%s'", cmd);
      SystemExec(cmd);
      delete cmd;

tools.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: tools.c 1.51 2002/01/20 15:43:35 kls Exp $
+ * $Id: tools.c 1.52 2002/01/26 12:04:32 kls Exp $
  */
 
 #include "tools.h"
@@ -136,6 +136,29 @@ char *compactspace(char *s)
   return s;
 }
 
+const char *strescape(const char *s, const char *chars)
+{
+  static char *buffer = NULL;
+  const char *p = s;
+  char *t = NULL;
+  while (*p) {
+        if (strchr(chars, *p)) {
+           if (!t) {
+              buffer = (char *)realloc(buffer, 2 * strlen(s) + 1);
+              t = buffer + (p - s);
+              s = strcpy(buffer, s);
+              }
+           *t++ = '\\';
+           }
+        if (t)
+           *t++ = *p;
+        p++;
+        }
+  if (t)
+     *t = 0;
+  return s;
+}
+
 bool startswith(const char *s, const char *p)
 {
   while (*p) {

tools.h

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: tools.h 1.37 2002/01/20 15:39:53 kls Exp $
+ * $Id: tools.h 1.38 2002/01/26 11:55:06 kls Exp $
  */
 
 #ifndef __TOOLS_H
@@ -50,13 +50,14 @@ char *strreplace(char *s, char c1, char c2);
 char *skipspace(const char *s);
 char *stripspace(char *s);
 char *compactspace(char *s);
+const char *strescape(const char *s, const char *chars); // returns a statically allocated string!
 bool startswith(const char *s, const char *p);
 bool endswith(const char *s, const char *p);
 bool isempty(const char *s);
 int time_ms(void);
 void delay_ms(int ms);
 bool isnumber(const char *s);
-const char *AddDirectory(const char *DirName, const char *FileName);
+const char *AddDirectory(const char *DirName, const char *FileName); // returns a statically allocated string!
 uint FreeDiskSpaceMB(const char *Directory);
 bool DirectoryOk(const char *DirName, bool LogErrors = false);
 bool MakeDirs(const char *FileName, bool IsDirectory = false);
@@ -64,7 +65,7 @@ bool RemoveFileOrDir(const char *FileName, bool FollowSymlinks = false);
 bool RemoveEmptyDirectories(const char *DirName, bool RemoveThis = false);
 char *ReadLink(const char *FileName);
 bool SpinUpDisk(const char *FileName);
-const char *DayDateTime(time_t t = 0);
+const char *DayDateTime(time_t t = 0); // returns a statically allocated string!
 
 class cFile {
 private:

vdr.c

@@ -22,7 +22,7 @@
  *
  * The project's page is at http://www.cadsoft.de/people/kls/vdr
  *
- * $Id: vdr.c 1.90 2002/01/13 16:00:47 kls Exp $
+ * $Id: vdr.c 1.91 2002/01/26 11:53:11 kls Exp $
  */
 
 #include <getopt.h>
@@ -499,7 +499,7 @@ int main(int argc, char *argv[])
                        int Channel = timer ? timer->channel : 0;
                        const char *File = timer ? timer->file : "";
                        char *cmd;
-                       asprintf(&cmd, "%s %ld %ld %d '%s' %d", Shutdown, Next, Delta, Channel, File, UserShutdown);
+                       asprintf(&cmd, "%s %ld %ld %d \"%s\" %d", Shutdown, Next, Delta, Channel, strescape(File, "\"$"), UserShutdown);
                        isyslog(LOG_INFO, "executing '%s'", cmd);
                        SystemExec(cmd);
                        delete cmd;