From 6f5e764aa363f94048dadabcde94956e507edd87 Mon Sep 17 00:00:00 2001
From: wlemb <wlemb>
Date: Tue, 28 Oct 2003 07:46:21 +0000
Subject: * contrib/eqn2graph/eqn2graph.sh, contrib/grap2graph/grap2graph.sh,
 contrib/pic2graph/pic2graph.sh: Implement secure management of temporary
 files. Pass `-P-pletter' to groff to avoid data outside of the converted area
 -- some versions of `convert' (for example 5.3.8) don't check the bounding
 box of the image but always use a fixed image size (letter paper format). *
 contrib/eqn2graph/eqn2graph.man, contrib/grap2graph/grap2graph.man,
 contrib/pic2graph/pic2graph.man: Updated.

* src/roff/groff/groff.man: Document $TMP and $TEMP.
---
 contrib/grap2graph/grap2graph.man | 18 +++++++++++++++++-
 contrib/grap2graph/grap2graph.sh  | 29 +++++++++++++++++++++++------
 2 files changed, 40 insertions(+), 7 deletions(-)

(limited to 'contrib/grap2graph')

diff --git a/contrib/grap2graph/grap2graph.man b/contrib/grap2graph/grap2graph.man
index cf259321..0c6d4568 100644
--- a/contrib/grap2graph/grap2graph.man
+++ b/contrib/grap2graph/grap2graph.man
@@ -1,4 +1,4 @@
-.\" $Id: grap2graph.man,v 1.2 2003/07/02 18:48:25 wlemb Exp $
+.\" $Id: grap2graph.man,v 1.3 2003/10/28 07:46:23 wlemb Exp $
 .\" This documentation is released to the public domain.
 .
 .
@@ -72,6 +72,22 @@ Command-line switches and arguments not listed above are passed to
 .BR convert (1).
 .
 .
+.SH ENVIRONMENT
+.TP
+.B GROFF_TMPDIR
+The directory in which temporary files will be created.
+If this is not set
+.B grap2graph
+searches the environment variables
+.BR \%TMPDIR ,
+.BR TMP ,
+and
+.B TEMP
+(in that order).
+Otherwise, temporary files will be created in
+.BR /tmp .
+.
+.
 .SH "SEE ALSO"
 .BR pic2graph (@MAN1EXT@),
 .BR eqn2graph (@MAN1EXT@),
diff --git a/contrib/grap2graph/grap2graph.sh b/contrib/grap2graph/grap2graph.sh
index 75bb881e..7737f1ef 100644
--- a/contrib/grap2graph/grap2graph.sh
+++ b/contrib/grap2graph/grap2graph.sh
@@ -28,7 +28,7 @@
 #
 # Thus, we pass -U to groff(1), and everything else to convert(1).
 #
-# $Id: grap2graph.sh,v 1.1 2003/07/02 15:35:01 wlemb Exp $
+# $Id: grap2graph.sh,v 1.2 2003/10/28 07:46:23 wlemb Exp $
 #
 groff_opts=""
 convert_opts=""
@@ -54,15 +54,32 @@ do
     shift
 done
 
+# create temporary directory
+tmp=
+for d in "$GROFF_TMPDIR" "$TMPDIR" "$TMP" "$TEMP" /tmp; do
+    test -z "$d" && continue
+
+    tmp=`(umask 077 && mktemp -d -q "$d/grap2graph-XXXXXX") 2> /dev/null` \
+    && test -n "$tmp" && test -d "$tmp" \
+    && break
+
+    tmp=$d/grap2graph$$-$RANDOM
+    (umask 077 && mkdir $tmp) 2> /dev/null && break
+done;
+if test -z "$tmp"; then
+    echo "$0: cannot create temporary directory" >&2
+    { (exit 1); exit 1; }
+fi
+
+trap 'exit_status=$?; rm -rf $tmp && exit $exit_status' 0 2 15 
+
 # Here goes:
 # 1. Add .G1/.G2.
 # 2. Process through grap(1) to emit pic markup.
 # 3. Process through groff(1) with pic preprocessing to emit Postscript.
 # 4. Use convert(1) to crop the Postscript and turn it into a bitmap.
-tmp=/usr/tmp/grap2graph-$$
-trap "rm ${tmp}.*" 0 2 15 
-(echo ".G1"; cat; echo ".G2") | grap | groff -p $groff_opts -Tps | \
-	convert -crop 0x0 $convert_opts - ${tmp}.${format} \
-	&& cat ${tmp}.${format}
+(echo ".G1"; cat; echo ".G2") | grap | groff -p $groff_opts -Tps -P-pletter | \
+    convert -crop 0x0 $convert_opts - $tmp/grap2graph.$format \
+    && cat $tmp/grap2graph.$format
 
 # End
-- 
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