Fix possible crash when gpg is upgraded to gpg-v21

diff --git a/src/plugins/pgpcore/sgpgme.c b/src/plugins/pgpcore/sgpgme.c
index bd14362d6980a0782d6981f8ed07802ad039c764..6c21f2ec0c64112928aa25de8c9bdf22c0da5327 100644 (file)
--- a/src/plugins/pgpcore/sgpgme.c
+++ b/src/plugins/pgpcore/sgpgme.c
@@ -218,6 +218,18 @@ gchar *sgpgme_sigstat_info_short(gpgme_ctx_t ctx, gpgme_verify_result_t status)
        } else if (gpg_err_code(err) != GPG_ERR_NO_ERROR && gpg_err_code(err) != GPG_ERR_EOF) {
                return g_strdup_printf(_("The signature can't be checked - %s"), 
                        gpgme_strerror(err));
+       } else if (gpg_err_code(err) != GPG_ERR_NO_ERROR && gpg_err_code(err) == GPG_ERR_EOF) {
+               /*
+                * When gpg is upgraded to gpg-v21 then installer tries to migrate the old
+                * gpg keyrings found in ~/.gnupg to the new version. If the keyrings contain
+                * very old keys using ciphers no more supported in gpg-v21 this transition
+                * can fail and the left-over ~/.gnupg/pubring.gpg will cause claws to crash
+                * when the above condition is meet.
+                */
+               return g_strdup_printf(_("The signature can't be checked - %s. Removing\n"
+                                        "left-over ~/.gnupg/pubring.gpg might solve the\n"
+                                        "problem if you have installed gpg-v21"),
+                        gpgme_strerror(err));
        }
        if (key)
                uname = extract_name(key->uids->uid);