common: Remove simple password query error codes.

* common/simple-pwquery.h: Remove mapping function.  Move all
definitions of status codes...
* common/simple-pwquery.c: ... here, and define them to meaningful gpg
error values.
* agent/preset-passphrase.c (preset_passphrase): Use error code as-is.
(forget_passphrase): Likewise.
* tools/symcryptrun.c (confucius_get_pass): Likewise.

Signed-off-by: Justus Winter <justus@g10code.com>

agent/preset-passphrase.c

@@ -111,10 +111,6 @@ my_strusage (int level)
 
 
 
-/* Include the implementation of map_spwq_error.  */
-MAP_SPWQ_ERROR_IMPL
-
-
 static void
 preset_passphrase (const char *keygrip)
 {
@@ -170,7 +166,7 @@ preset_passphrase (const char *keygrip)
   if (!opt_passphrase)
     wipememory (passphrase, sizeof (passphrase));
 
-  rc = map_spwq_error (simple_query (line));
+  rc = simple_query (line);
   if (rc)
     {
       log_error ("caching passphrase failed: %s\n", gpg_strerror (rc));
@@ -192,7 +188,7 @@ forget_passphrase (const char *keygrip)
   if (rc < 0)
     rc = gpg_error_from_syserror ();
   else
-    rc = map_spwq_error (simple_query (line));
+    rc = simple_query (line);
   if (rc)
     {
       log_error ("clearing passphrase failed: %s\n", gpg_strerror (rc));

common/simple-pwquery.c

@@ -50,6 +50,15 @@
 #define SIMPLE_PWQUERY_IMPLEMENTATION 1
 #include "simple-pwquery.h"
 
+#define SPWQ_OUT_OF_CORE	gpg_error_from_errno (ENOMEM)
+#define SPWQ_IO_ERROR		gpg_error_from_errno (EIO)
+#define SPWQ_PROTOCOL_ERROR	gpg_error (GPG_ERR_PROTOCOL_VIOLATION)
+#define SPWQ_ERR_RESPONSE	gpg_error (GPG_ERR_INV_RESPONSE)
+#define SPWQ_NO_AGENT		gpg_error (GPG_ERR_NO_AGENT)
+#define SPWQ_SYS_ERROR		gpg_error_from_syserror ()
+#define SPWQ_GENERAL_ERROR	gpg_error (GPG_ERR_GENERAL)
+#define SPWQ_NO_PIN_ENTRY	gpg_error (GPG_ERR_NO_PIN_ENTRY)
+
 #ifndef _
 #define _(a) (a)
 #endif

common/simple-pwquery.h

@@ -67,47 +67,4 @@ int simple_query (const char *query);
    to be called before any other function.  Returns 0 on success.  */
 int simple_pw_set_socket (const char *name);
 
-#define SPWQ_OUT_OF_CORE 1
-#define SPWQ_IO_ERROR 2
-#define SPWQ_PROTOCOL_ERROR 3
-#define SPWQ_ERR_RESPONSE 4
-#define SPWQ_NO_AGENT 5
-#define SPWQ_SYS_ERROR 6
-#define SPWQ_GENERAL_ERROR 7
-#define SPWQ_NO_PIN_ENTRY 8
-
-
-/* We often need to map error codes to gpg-error style error codes.
-   To have a consistent mapping this macro may be used to implemt the
-   mapping function.  */
-#define MAP_SPWQ_ERROR_IMPL                                 \
-       static gpg_error_t                                   \
-       map_spwq_error (int err)                             \
-       {                                                    \
-         switch (err)                                       \
-           {                                                \
-           case 0:                                          \
-             return 0;                                      \
-           case SPWQ_OUT_OF_CORE:                           \
-             return gpg_error_from_errno (ENOMEM);          \
-           case SPWQ_IO_ERROR:                              \
-             return gpg_error_from_errno (EIO);             \
-           case SPWQ_PROTOCOL_ERROR:                        \
-             return gpg_error (GPG_ERR_PROTOCOL_VIOLATION); \
-           case SPWQ_ERR_RESPONSE:                          \
-             return gpg_error (GPG_ERR_INV_RESPONSE);       \
-           case SPWQ_NO_AGENT:                              \
-             return gpg_error (GPG_ERR_NO_AGENT);           \
-           case SPWQ_SYS_ERROR:                             \
-             return gpg_error_from_syserror ();             \
-           case SPWQ_NO_PIN_ENTRY:                          \
-             return gpg_error (GPG_ERR_NO_PIN_ENTRY);       \
-           case SPWQ_GENERAL_ERROR:                         \
-           default:                                         \
-             return gpg_error (GPG_ERR_GENERAL);            \
-           }                                                \
-       }
-/* End of MAP_SPWQ_ERROR_IMPL.  */
-
-
 #endif /*SIMPLE_PWQUERY_H*/

tools/symcryptrun.c

@@ -238,9 +238,6 @@ my_strusage (int level)
        __result; }))
 #endif
 
-/* Include the implementation of map_spwq_error.  */
-MAP_SPWQ_ERROR_IMPL
-
 /* Unlink a file, and shred it if SHRED is true.  */
 int
 remove_file (char *name, int shred)
@@ -441,7 +438,6 @@ confucius_get_pass (const char *cacheid, int again, int *canceled)
   pw = simple_pwquery (cacheid,
                        again ? _("does not match - try again"):NULL,
                        _("Passphrase:"), NULL, 0, &err);
-  err = map_spwq_error (err);
   i18n_switchback (orig_codeset);
 
   if (!pw)