Follow symlinks when deleting directories.

Bump PKG_INSTALL_VER to 20081225 (Merry Christmas \o/).

PR:		bin/54446
Submitted by:	Andrea Barberio <insomniac@slackware.it>
MFC after:	1 month

2 files changed, 71 insertions, 24 deletions

diff --git a/usr.sbin/pkg_install/lib/lib.h b/usr.sbin/pkg_install/lib/lib.h
index d463257..4dbe2c0 100644
--- a/usr.sbin/pkg_install/lib/lib.h
+++ b/usr.sbin/pkg_install/lib/lib.h
@@ -105,7 +105,7 @@
  * Version of the package tools - increase only when some
  * functionality used by bsd.port.mk is changed, added or removed
  */
-#define PKG_INSTALL_VERSION	20080708
+#define PKG_INSTALL_VERSION	20081225
 
 #define PKG_WRAPCONF_FNAME	"/var/db/pkg_install.conf"
 #define main(argc, argv)	real_main(argc, argv)
diff --git a/usr.sbin/pkg_install/lib/plist.c b/usr.sbin/pkg_install/lib/plist.c
index 283b87f..f9b05b0 100644
--- a/usr.sbin/pkg_install/lib/plist.c
+++ b/usr.sbin/pkg_install/lib/plist.c
@@ -544,45 +544,92 @@ delete_package(Boolean ign_err, Boolean nukedirs, Package *pkg)
 int
 delete_hierarchy(const char *dir, Boolean ign_err, Boolean nukedirs)
 {
-    char *cp1, *cp2;
+    char *cp1, *cp2, *realdir;
 
-    cp1 = cp2 = strdup(dir);
-    if (!fexists(dir)) {
+    realdir = malloc(FILENAME_MAX);
+    if (realdir == NULL) {
+	warnx("Couldn't allocate enough memory\n");
+	return (ign_err ? SUCCESS : FAIL);
+    }
+
+    if (issymlink(dir) && readlink(dir, realdir, FILENAME_MAX-1) == -1)
+	return (ign_err ? SUCCESS : FAIL);
+
+    strlcpy(realdir, dir, FILENAME_MAX);
+
+    cp1 = cp2 = strdup(realdir);
+    if (cp1 == NULL) {
+	warnx("Couldn't allocate enough memory\n");
+	return (ign_err ? SUCCESS : FAIL);
+    }
+
+    if (!fexists(realdir)) {
 	if (!ign_err)
 	    warnx("%s '%s' doesn't exist",
-		isdir(dir) ? "directory" : "file", dir);
-	return !ign_err;
+		isdir(realdir) ? "directory" : "file", realdir);
+	free(cp1);
+	free(realdir);
+	return (ign_err ? SUCCESS : FAIL);
     }
     else if (nukedirs) {
-	if (vsystem("%s -r%s %s", REMOVE_CMD, (ign_err ? "f" : ""), dir))
-	    return 1;
+	if (vsystem("%s -r%s %s", REMOVE_CMD, (ign_err ? "f" : ""), realdir)) {
+	    free(cp1);
+	    free(realdir);
+	    return (ign_err ? SUCCESS : FAIL);
+	}
     }
-    else if (isdir(dir) && !issymlink(dir)) {
-	if (RMDIR(dir) && !ign_err)
-	    return 1;
+    else if (isdir(realdir)) {
+	if (RMDIR(realdir)) {
+	    free(cp1);
+	    free(realdir);
+	    return (ign_err ? SUCCESS : FAIL);
+	}
     }
     else {
-	if (REMOVE(dir, ign_err))
-	    return 1;
+	if (REMOVE(realdir, ign_err)) {
+	    free(cp1);
+	    free(realdir);
+	    return (ign_err ? SUCCESS : FAIL);
+	}
     }
 
-    if (!nukedirs)
-	return 0;
+    if (!nukedirs) {
+	free(cp1);
+	free(realdir);
+	return (SUCCESS);
+    }
     while (cp2) {
 	if ((cp2 = strrchr(cp1, '/')) != NULL)
 	    *cp2 = '\0';
-	if (!isemptydir(dir))
-	    return 0;
-	if (RMDIR(dir) && !ign_err) {
-	    if (!fexists(dir))
-		warnx("directory '%s' doesn't exist", dir);
-	    else
-		return 1;
+	if (!isemptydir(realdir)) {
+	    free(cp1);
+	    free(realdir);
+	    return (SUCCESS);
+	}
+	if (RMDIR(realdir) && !ign_err) {
+	    if (!fexists(realdir)) {
+		warnx("directory '%s' doesn't exist", realdir);
+		free(cp1);
+		free(realdir);
+		return (SUCCESS);
+	    } else {
+		free(cp1);
+		free(realdir);
+		return (FAIL);
+	    }
 	}
 	/* back up the pathname one component */
 	if (cp2) {
-	    cp1 = strdup(dir);
+	    free(cp1);
+	    cp1 = strdup(realdir);
+	    if (cp1 == NULL) {
+		warnx("Couldn't allocate enough memory\n");
+		return (ign_err ? SUCCESS : FAIL);
+	    }
 	}
     }
-    return 0;
+    free(cp1);
+    free(realdir);
+    return (SUCCESS);
 }
+