X-Git-Url: https://diplodocus.org/git/nmh/blobdiff_plain/0e7106da702d97e10f3bd24d8284a2ab86044ebd..c7e87bbec2da153d2de464977c216502196602d8:/sbr/context_read.c

diff --git a/sbr/context_read.c b/sbr/context_read.c
index fcc12f99..adaa172b 100644
--- a/sbr/context_read.c
+++ b/sbr/context_read.c
@@ -1,8 +1,6 @@
 /*
  * context_read.c -- find and read profile and context files
  *
- * $Id$
- *
  * This code is Copyright (c) 2002, by the authors of nmh.  See the
  * COPYRIGHT file in the root directory of the nmh distribution for
  * complete copyright information.
@@ -25,7 +23,6 @@
  */
 
 #include <h/mh.h>				/* mh internals */
-#include <errno.h>				/* system call errors */
 #include <pwd.h>				/* structure for getpwuid() results */
 
 void
@@ -35,8 +32,16 @@ context_read (void)
     char			*cp;		/* miscellaneous pointer */
     char			*nd;		/* nmh directory pointer */
     struct	stat		st;		/* stat() results */
-    register	struct	passwd	*pw;		/* getpwuid() results */
-    register	FILE		*ib;		/* profile and context file pointer */
+    struct	passwd	        *pw;		/* getpwuid() results */
+    FILE        		*ib;		/* profile and context file pointer */
+    int failed_to_lock = 0;
+
+    /*
+     *  If this routine _is_ called again (despite the wanings in the
+     *  comments above), return immediately.
+     */
+    if ( m_defs != 0 )
+        return;
 
     /*
      *	Find user's home directory.  Try the HOME environment variable first,
@@ -60,6 +65,8 @@ context_read (void)
     if ((cp = getenv("MH")) && *cp != '\0') {
 	defpath = path(cp, TFILE);
 
+        /* defpath is an absolute path; make sure that always MH is, too. */
+	setenv("MH", defpath, 1);
 	if (stat(defpath, &st) != -1 && (st.st_mode & S_IFREG) == 0)
 		adios((char *)0, "`%s' specified by your MH environment variable is not a normal file", cp);
 
@@ -100,13 +107,13 @@ context_read (void)
 
 	cp = concat ("Your MH-directory \"", nd, "\" doesn't exist; Create it? ", NULL);
 
-	if (!getanswer(cp))
+	if (!read_yes_or_no_if_tty(cp))
 	    adios (NULL, "unable to access MH-directory \"%s\"", nd);
 
 	free (cp);
 
 	if (!makedir (nd))
-	    adios (NULL, "unable to create", nd);
+	    adios (NULL, "unable to create %s", nd);
     }
 
     else if ((st.st_mode & S_IFDIR) == 0)
@@ -120,17 +127,20 @@ context_read (void)
     if ((cp = getenv ("MHCONTEXT")) == (char *)0 || *cp == '\0')
 	cp = context;
 
-    /* context is NULL if context_foil() was called to disable use of context */
-    if (!cp) {
+    /* context is NULL if context_foil() was called to disable use of context
+     * We also support users setting explicitly setting MHCONTEXT to /dev/null.
+     * (if this wasn't specialcased then the locking would be liable to fail)
+     */
+    if (!cp || (strcmp(cp,"/dev/null") == 0)) {
 	ctxpath = NULL;
 	return;
     }
     
     ctxpath = getcpy (m_maildir (cp));
 
-    if ((ib = lkfopen (ctxpath, "r"))) {
+    if ((ib = lkfopendata (ctxpath, "r", &failed_to_lock))) {
 	readconfig ((struct node **) 0, ib, cp, 1);
-	lkfclose (ib, ctxpath);
+	lkfclosedata (ib, ctxpath);
     }
 
     return;