From 1debce286590c6fe079dad03bacbdf680b4b63c5 Mon Sep 17 00:00:00 2001
From: Chris Allegretta <chrisa@asty.org>
Date: Thu, 13 Feb 2003 22:00:19 +0000
Subject: [PATCH] More getpwent changes

git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@1465 35c25a1d-7b9e-4130-9fde-d3aeb78583b8
---
 ChangeLog |  7 +++++++
 files.c   | 53 ++++++++++++++++++++++++++++-------------------------
 2 files changed, 35 insertions(+), 25 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index d8265f92..7051fc6f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -33,6 +33,13 @@ CVS code
   load_history()
 	- Fix segfault on loading huge strings from history file 
 	  (David Benbennick).
+  load_history(), save_history()
+	- Changed to look at $HOME before getpwuid(geteuid()), see
+	  details in comment for rcfile.c:do_rcfile().
+  real_dir_from_tidle()
+	- Change check for the running user's home dir to use
+	  getpwuid(geteuid()) rather than a getpwent() loop
+ 	  (suggested by Jordi).
 - nano.c:
   breakable()
 	- Fix incorrect return value on short lines (David Benbennick).
diff --git a/files.c b/files.c
index 6436c7af..bce66810 100644
--- a/files.c
+++ b/files.c
@@ -1896,15 +1896,11 @@ char *real_dir_from_tilde(const char *buf)
 	for (i = 1; buf[i] != '/' && buf[i] != '\0'; i++)
 	    ;
 
-	if (i == 1) {
-	    /* Determine home directory using getpwent(), don't rely on
+	/* Determine home directory using getpwent(), don't rely on
 	       $HOME */
-	    uid_t euid = geteuid();
-
-	    do {
-		userdata = getpwent();
-	    } while (userdata != NULL && userdata->pw_uid != euid);
-	} else {
+	if (i == 1)
+	    userdata = getpwuid(geteuid());
+	else {
 	    do {
 		userdata = getpwent();
 	    } while (userdata != NULL &&
@@ -2872,22 +2868,26 @@ char *do_browse_from(const char *inpath)
 void load_history(void)
 {
     FILE *hist;
-    const struct passwd *userage;
-    uid_t euid = geteuid();
+    const struct passwd *userage = NULL;
     static char *nanohist;
     char *buf, *ptr;
+    char *homenv = getenv("HOME");
     historyheadtype *history = &search_history;
 
-    do {
-	userage = getpwent();
-    } while (userage != NULL && userage->pw_uid != euid);
-    endpwent();
+
+    if (homenv != NULL) {
+        nanohist = nrealloc(nanohist, strlen(homenv) + 15);
+        sprintf(nanohist, "%s/.nano_history", homenv);
+    } else {
+	userage = getpwuid(geteuid());
+	endpwent();
+        nanohist = nrealloc(nanohist, strlen(userage->pw_dir) + 15);
+        sprintf(nanohist, "%s/.nano_history", userage->pw_dir);
+    }
 
     /* assume do_rcfile has reported missing home dir */
 
-    if (userage != NULL) {
-        nanohist = nrealloc(nanohist, strlen(userage->pw_dir) + 15);
-        sprintf(nanohist, "%s/.nano_history", userage->pw_dir);
+    if (homenv != NULL || userage != NULL) {
 	hist = fopen(nanohist, "r");
 	if (!hist) {
             if (errno != ENOENT)
@@ -2917,9 +2917,9 @@ void load_history(void)
 void save_history(void)
 {
     FILE *hist;
-    const struct passwd *userage;
-    uid_t euid = geteuid();
+    const struct passwd *userage = NULL;
     char *nanohist = NULL;
+    char *homenv = getenv("HOME");
     historytype *h;
 
     /* don't save unchanged or empty histories */
@@ -2927,14 +2927,17 @@ void save_history(void)
 			ISSET(HISTORY_CHANGED) && !ISSET(VIEW_MODE)))
 	return;
 
-    do {
-	userage = getpwent();
-    } while (userage != NULL && userage->pw_uid != euid);
-    endpwent();
-
-    if (userage != NULL) {
+    if (homenv != NULL) {
+	nanohist = nrealloc(nanohist, strlen(homenv) + 15);
+	sprintf(nanohist, "%s/.nano_history", homenv);
+    } else {
+	userage = getpwuid(geteuid());
+	endpwent();
 	nanohist = nrealloc(nanohist, strlen(userage->pw_dir) + 15);
 	sprintf(nanohist, "%s/.nano_history", userage->pw_dir);
+    }
+
+    if (homenv != NULL || userage != NULL) {
 	hist = fopen(nanohist, "wb");
 	if (!hist) {
 	    rcfile_msg(_("Unable to write ~/.nano_history file, %s"), strerror(errno));