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gpg: New function to printed a detailed error code.

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* g10/misc.c (print_reported_error): New.
--

Often the user is only interested in a catch all error code like "not
found" but sometimes it is useful to also see the real reason.  By
this function this can easily be achieved.  Example:

  err = search_for_key (keyid)
  if (err)
    {
      log_info ("error locating key '%s': %s\n",
                keyid, gpg_strerror (GPG_ERR_NOT_FOUND));
      print_reported_error (err, GPG_ERR_NOT_FOUND);
    }

results in

  gpg: error locating key 'foobar': not found
  gpg: (reported error: no keyring <keybox>)

where the second line is only printed in verbose mode and if ERR is
not GPG_ERR_NOT_FOUND.

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2015-12-14 19:35:03 +01:00
parent f369efd671
commit 2ea1aebc92
No known key found for this signature in database
GPG Key ID: E3FDFF218E45B72B
2 changed files with 26 additions and 0 deletions
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1
g10/main.h
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@ -89,6 +89,7 @@ void print_pubkey_algo_note (pubkey_algo_t algo);
void print_cipher_algo_note (cipher_algo_t algo);
void print_digest_algo_note (digest_algo_t algo);
void print_digest_rejected_note (enum gcry_md_algos algo);
void print_reported_error (gpg_error_t err, gpg_err_code_t skip_if_ec);
void additional_weak_digest (const char* digestname);
/*-- armor.c --*/

25
g10/misc.c
View File

@ -358,6 +358,31 @@ print_digest_rejected_note (enum gcry_md_algos algo)
}
/* Print a message
* "(reported error: %s)\n
* in verbose mode to further explain an error. If the error code has
* the value IGNORE_EC no message is printed. A message is also not
* printed if ERR is 0. */
void
print_reported_error (gpg_error_t err, gpg_err_code_t ignore_ec)
{
if (!opt.verbose)
return;
if (!gpg_err_code (err))
;
else if (gpg_err_code (err) == ignore_ec)
;
else if (gpg_err_source (err) == GPG_ERR_SOURCE_DEFAULT)
log_info (_("(reported error: %s\n)"),
gpg_strerror (err));
else
log_info (_("(reported error: %s <%s>\n)"),
gpg_strerror (err), gpg_strsource (err));
}
/* Map OpenPGP algo numbers to those used by Libgcrypt. We need to do
this for algorithms we implemented in Libgcrypt after they become
part of OpenPGP. */