From 96de2e590bad00575baa7c2c6be5767b43aa017c Mon Sep 17 00:00:00 2001
From: Richard Levitte <levitte@openssl.org>
Date: Fri, 20 Apr 2018 12:22:45 +0200
Subject: [PATCH] Revert "Check directory is able to create files for various
 -out option"

This reverts commit 555c94a0db9661428da0a45cb32b9f002324eefd.

Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6033)
---
 apps/apps.c | 67 -----------------------------------------------------
 apps/apps.h |  1 -
 apps/opt.c  | 41 ++++----------------------------
 3 files changed, 5 insertions(+), 104 deletions(-)

diff --git a/apps/apps.c b/apps/apps.c
index 2ab65b7213..b35ea563ee 100644
--- a/apps/apps.c
+++ b/apps/apps.c
@@ -2364,73 +2364,6 @@ int app_isdir(const char *name)
 }
 #endif
 
-/* app_dirname section */
-
-/*
- * This exactly follows what POSIX's
- * dirname does, but is implemented
- * in a more platform independent way.
- *
- * path        dirname
- * /usr/lib    /usr
- * /usr/       /
- * usr         .
- * /           /
- * .           .
- * ..          .
- * ""          .
- *
- * Note: this function also keeps the
- * possibility of modifying the 'path'
- * string same as POSIX dirname.
- */
-static char *posix_dirname(char *path)
-{
-    size_t l;
-    char *ret = ".";
-
-    l = strlen(path);
-    if (l == 0)
-        goto out;
-    if (strcmp(path, ".") == 0)
-        goto out;
-    if (strcmp(path, "..") == 0)
-        goto out;
-    if (strcmp(path, "/") == 0) {
-        ret = "/";
-        goto out;
-    }
-    if (path[l - 1] == '/') {
-        /* /usr/ */
-        path[l - 1] = '\0';
-    }
-    if ((ret = strrchr(path, '/')) == NULL) {
-        /* usr */
-        ret = ".";
-    } else if (ret == path) {
-        /* /usr */
-        *++ret = '\0';
-        ret = path;
-    } else {
-        /* /usr/lib */
-        *ret = '\0';
-        ret = path;
-    }
- out:
-    return ret;
-}
-
-/*
- * TODO: implement app_dirname for Windows
- * and VMS.
- */
-#if !defined(_WIN32) && !defined(__VMS)
-char *app_dirname(char *path)
-{
-    return posix_dirname(path);
-}
-#endif
-
 /* raw_read|write section */
 #if defined(__VMS)
 # include "vms_term_sock.h"
diff --git a/apps/apps.h b/apps/apps.h
index 4d4aae79ed..b45a31aadc 100644
--- a/apps/apps.h
+++ b/apps/apps.h
@@ -611,7 +611,6 @@ void store_setup_crl_download(X509_STORE *st);
 
 int app_isdir(const char *);
 int app_access(const char *, int flag);
-char *app_dirname(char *path);
 int fileno_stdin(void);
 int fileno_stdout(void);
 int raw_read_stdin(void *, int);
diff --git a/apps/opt.c b/apps/opt.c
index a47451c94f..a9d163a480 100644
--- a/apps/opt.c
+++ b/apps/opt.c
@@ -613,17 +613,13 @@ int opt_verify(int opt, X509_VERIFY_PARAM *vpm)
  */
 int opt_next(void)
 {
-    char *p, *estr;
+    char *p;
     const OPTIONS *o;
     int ival;
     long lval;
     unsigned long ulval;
     ossl_intmax_t imval;
     ossl_uintmax_t umval;
-#if !defined(_WIN32) && !defined(__VMS)
-    char *c;
-    int oerrno;
-#endif
 
     /* Look at current arg; at end of the list? */
     arg = NULL;
@@ -680,13 +676,13 @@ int opt_next(void)
             /* Just a string. */
             break;
         case '/':
-            if (app_isdir(arg) > 0)
+            if (app_isdir(arg) >= 0)
                 break;
             BIO_printf(bio_err, "%s: Not a directory: %s\n", prog, arg);
             return -1;
         case '<':
             /* Input file. */
-            if (strcmp(arg, "-") == 0 || app_access(arg, R_OK) == 0)
+            if (strcmp(arg, "-") == 0 || app_access(arg, R_OK) >= 0)
                 break;
             BIO_printf(bio_err,
                        "%s: Cannot open input file %s, %s\n",
@@ -694,38 +690,11 @@ int opt_next(void)
             return -1;
         case '>':
             /* Output file. */
-#if !defined(_WIN32) && !defined(__VMS)
-            c = OPENSSL_strdup(arg);
-            if (c == NULL) {
-                BIO_printf(bio_err,
-                           "%s: Memory allocation failure\n", prog);
-                return -1;
-            }
-            oerrno = errno;
-            errno = 0;
-            if (strcmp(arg, "-") == 0
-                || (app_access(app_dirname(c), W_OK) == 0
-                    && app_isdir(arg) <= 0
-                    && (app_access(arg, W_OK) == 0 || errno == ENOENT))) {
-                OPENSSL_free(c);
+            if (strcmp(arg, "-") == 0 || app_access(arg, W_OK) >= 0 || errno == ENOENT)
                 break;
-            }
-            OPENSSL_free(c);
-            if (errno == 0)
-                /* only possible if 'arg' is a directory */
-                estr = "is a directory";
-            else
-                estr = strerror(errno);
-            errno = oerrno;
-#else
-            if (strcmp(arg, "-") == 0 || app_access(arg, W_OK) == 0
-                || errno == ENOENT)
-                break;
-            estr = strerror(errno);
-#endif
             BIO_printf(bio_err,
                        "%s: Cannot open output file %s, %s\n",
-                       prog, arg, estr);
+                       prog, arg, strerror(errno));
             return -1;
         case 'p':
         case 'n':
-- 
2.34.1