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common: Prepare for parsing mail sub-addresses.

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* common/mbox-util.c (mailbox_from_userid): Add arg subaddress and
implement.  Change all callers to pass false for it.

* common/t-mbox-util.c (run_mbox_no_sub_test): New.
(run_filter): Add arg no_sub.
(main): Call new test and add option --no-sub.
--

Some stats: In the about 5300000 keys on the SKS servers we found 3055
unique mailboxes with a '+' in it.  After removing leading and
trailing '+' as well as multiple '+' (e.g. "c++" or "foo+bar+baz")
2697 were left which seem to be valid sub-addresses.

To filter mailboxes out from a line delimited list with
user-ids (e.g. an SQL output), the command

   t-mbox-util --verbose --filter

can be used; to output w/o sub-addresses add --no-sub.

GnuPG-bug-id: 4200
Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2018-11-12 07:44:33 +01:00
parent bbed4746ed
commit 6b9f772914
No known key found for this signature in database
GPG key ID: E3FDFF218E45B72B
16 changed files with 139 additions and 27 deletions
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4
dirmngr/server.c
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@ -731,7 +731,7 @@ cmd_dns_cert (assuan_context_t ctx, char *line)
/* We lowercase ascii characters but the DANE I-D does not allow
this. FIXME: Check after the release of the RFC whether to
change this. */
mbox = mailbox_from_userid (line);
mbox = mailbox_from_userid (line, 0);
if (!mbox || !(domain = strchr (mbox, '@')))
{
err = set_error (GPG_ERR_INV_USER_ID, "no mailbox in user id");
@ -855,7 +855,7 @@ proc_wkd_get (ctrl_t ctrl, assuan_context_t ctx, char *line)
line = skip_options (line);
is_wkd_query = !(opt_policy_flags || opt_submission_addr);
mbox = mailbox_from_userid (line);
mbox = mailbox_from_userid (line, 0);
if (!mbox || !(domain = strchr (mbox, '@')))
{
err = set_error (GPG_ERR_INV_USER_ID, "no mailbox in user id");