Honor "TMPDIR" environment variable

Replace all hardcoded paths referring to "/tmp" with a new function that
honors the "TMPDIR" environment variable as well as P_tmpdir and uses
"/tmp" as a fallback.

Thanks-to: Erik Saule <esaule@bmi.osu.edu>
Signed-off-by: Lukas Fleischer <calcurse@cryptocrack.de>

3 files changed, 20 insertions, 2 deletions

diff --git a/src/calcurse.h b/src/calcurse.h
index 6642ae9..e3822ef 100644
--- a/src/calcurse.h
+++ b/src/calcurse.h
@@ -854,6 +854,7 @@ long         now (void);
 char        *nowstr (void);
 long         mystrtol (const char *);
 void         print_bool_option_incolor (WINDOW *, unsigned, int, int);
+const char  *get_tempdir (void);
 char        *new_tempfile (const char *, int);
 void         erase_note (char **, enum eraseflg);
 int          parse_date (char *, enum datefmt, int *, int *, int *,
diff --git a/src/io.c b/src/io.c
index f82de50..74a8089 100644
--- a/src/io.c
+++ b/src/io.c
@@ -220,7 +220,8 @@ get_export_stream (enum export_type type)
     (void)snprintf (stream_name, BUFSIZ, "%s/calcurse.%s", home,
                     file_ext[type]);
   else
-    (void)snprintf (stream_name, BUFSIZ, "/tmp/calcurse.%s", file_ext[type]);
+    (void)snprintf (stream_name, BUFSIZ, "%s/calcurse.%s", get_tempdir (),
+                    file_ext[type]);
 
   while (stream == NULL)
     {
@@ -2857,10 +2858,11 @@ io_import_data (enum import_type type, struct conf *conf, char *stream_name)
 struct io_file *
 io_log_init (void)
 {
-  const char *logprefix = "/tmp/calcurse_log.";
+  char logprefix[BUFSIZ];
   char *logname;
   struct io_file *log;
 
+  snprintf (logprefix, BUFSIZ, "%s/calcurse_log.", get_tempdir ());
   logname = new_tempfile (logprefix, NOTESIZ);
   RETVAL_IF (logname == NULL, 0,
              _("Warning: could not create temporary log file, Aborting..."));
diff --git a/src/utils.c b/src/utils.c
index c861195..b165111 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -726,6 +726,21 @@ print_bool_option_incolor (WINDOW *win, unsigned option, int pos_y, int pos_x)
   wins_doupdate ();
 }
 
+
+/*
+ * Get the name of the default directory for temporary files.
+ */
+const char *
+get_tempdir (void)
+{
+  if (getenv ("TMPDIR"))
+    return getenv ("TMPDIR");
+  else if (P_tmpdir)
+    return P_tmpdir;
+  else
+    return "/tmp";
+}
+
 /*
  * Create a new unique file, and return a newly allocated string which contains
  * the random part of the file name.