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gpg: Make --auto-key-locate work again with keyservers.

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* dirmngr/ks-engine-hkp.c (ks_hkp_get): Allow exact search mode.
* g10/keyserver.c (keyserver_import_name): Implement.
(keyserver_get): Use exact mode for name based import.
(keyserver_get): Add args R_FPR and R_FPRLEN.  Change all callers.
This commit is contained in:
Werner Koch 2014-03-17 15:39:33 +01:00
parent 1d642d3ca8
commit 1e2e39c575
3 changed files with 78 additions and 53 deletions
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30
dirmngr/ks-engine-hkp.c
View File

@ -1040,7 +1040,9 @@ ks_hkp_get (ctrl_t ctrl, parsed_uri_t uri, const char *keyspec, estream_t *r_fp)
{
gpg_error_t err;
KEYDB_SEARCH_DESC desc;
char kidbuf[40+1];
char kidbuf[2+40+1];
const char *exactname = NULL;
char *searchkey = NULL;
char *hostport = NULL;
char *request = NULL;
estream_t fp = NULL;
@ -1060,16 +1062,22 @@ ks_hkp_get (ctrl_t ctrl, parsed_uri_t uri, const char *keyspec, estream_t *r_fp)
switch (desc.mode)
{
case KEYDB_SEARCH_MODE_SHORT_KID:
snprintf (kidbuf, sizeof kidbuf, "%08lX", (ulong)desc.u.kid[1]);
snprintf (kidbuf, sizeof kidbuf, "0x%08lX", (ulong)desc.u.kid[1]);
break;
case KEYDB_SEARCH_MODE_LONG_KID:
snprintf (kidbuf, sizeof kidbuf, "%08lX%08lX",
snprintf (kidbuf, sizeof kidbuf, "0x%08lX%08lX",
(ulong)desc.u.kid[0], (ulong)desc.u.kid[1]);
break;
case KEYDB_SEARCH_MODE_FPR20:
case KEYDB_SEARCH_MODE_FPR:
/* This is a v4 fingerprint. */
bin2hex (desc.u.fpr, 20, kidbuf);
kidbuf[0] = '0';
kidbuf[1] = 'x';
bin2hex (desc.u.fpr, 20, kidbuf+2);
break;
case KEYDB_SEARCH_MODE_EXACT:
exactname = desc.u.name;
break;
case KEYDB_SEARCH_MODE_FPR16:
@ -1078,6 +1086,14 @@ ks_hkp_get (ctrl_t ctrl, parsed_uri_t uri, const char *keyspec, estream_t *r_fp)
return gpg_error (GPG_ERR_INV_USER_ID);
}
searchkey = http_escape_string (exactname? exactname : kidbuf,
EXTRA_ESCAPE_CHARS);
if (!searchkey)
{
err = gpg_error_from_syserror ();
goto leave;
}
reselect = 0;
again:
/* Build the request string. */
@ -1092,8 +1108,9 @@ ks_hkp_get (ctrl_t ctrl, parsed_uri_t uri, const char *keyspec, estream_t *r_fp)
xfree (request);
request = strconcat (hostport,
"/pks/lookup?op=get&options=mr&search=0x",
kidbuf,
"/pks/lookup?op=get&options=mr&search=",
searchkey,
exactname? "&exact=on":"",
NULL);
if (!request)
{
@ -1123,6 +1140,7 @@ ks_hkp_get (ctrl_t ctrl, parsed_uri_t uri, const char *keyspec, estream_t *r_fp)
es_fclose (fp);
xfree (request);
xfree (hostport);
xfree (searchkey);
return err;
}

3
dirmngr/server.c
View File

@ -1603,7 +1603,8 @@ static const char hlp_ks_get[] =
"KS_GET {<pattern>}\n"
"\n"
"Get the keys matching PATTERN from the configured OpenPGP keyservers\n"
"(see command KEYSERVER). Each pattern should be a keyid or a fingerprint";
"(see command KEYSERVER). Each pattern should be a keyid, a fingerprint,\n"
"or an exact name indicastes by the '=' prefix.";
static gpg_error_t
cmd_ks_get (assuan_context_t ctx, char *line)
{

98
g10/keyserver.c
View File

@ -1,6 +1,7 @@
/* keyserver.c - generic keyserver code
* Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
* 2009, 2011, 2012 Free Software Foundation, Inc.
* Copyright (C) 2014 Werner Koch
*
* This file is part of GnuPG.
*
@ -110,7 +111,8 @@ static struct parse_options keyserver_opts[]=
static gpg_error_t keyserver_get (ctrl_t ctrl,
KEYDB_SEARCH_DESC *desc, int ndesc,
struct keyserver_spec *keyserver);
struct keyserver_spec *keyserver,
unsigned char **r_fpr, size_t *r_fprlen);
static gpg_error_t keyserver_put (ctrl_t ctrl, strlist_t keyspecs,
struct keyserver_spec *keyserver);
@ -819,7 +821,7 @@ show_prompt (ctrl_t ctrl, KEYDB_SEARCH_DESC *desc, int numdesc,
}
for (idx = 0; idx < numidx; idx++)
selarray[idx] = desc[numarray[idx]-1];
err = keyserver_get (ctrl, selarray, numidx, NULL);
err = keyserver_get (ctrl, selarray, numidx, NULL, NULL, NULL);
xfree (selarray);
}
}
@ -1039,6 +1041,7 @@ keyserver_export (ctrl_t ctrl, strlist_t users)
return rc;
}
int
keyserver_import (ctrl_t ctrl, strlist_t users)
{
@ -1071,13 +1074,31 @@ keyserver_import (ctrl_t ctrl, strlist_t users)
}
if(count>0)
rc=keyserver_get (ctrl, desc, count, NULL);
rc=keyserver_get (ctrl, desc, count, NULL, NULL, NULL);
xfree(desc);
return rc;
}
/* Import all keys that exactly match NAME */
int
keyserver_import_name (ctrl_t ctrl, const char *name,
unsigned char **fpr, size_t *fprlen,
struct keyserver_spec *keyserver)
{
KEYDB_SEARCH_DESC desc;
memset (&desc, 0, sizeof desc);
desc.mode = KEYDB_SEARCH_MODE_EXACT;
desc.u.name = name;
return keyserver_get (ctrl, &desc, 1, keyserver, fpr, fprlen);
}
int
keyserver_import_fprint (ctrl_t ctrl, const byte *fprint,size_t fprint_len,
struct keyserver_spec *keyserver)
@ -1097,7 +1118,7 @@ keyserver_import_fprint (ctrl_t ctrl, const byte *fprint,size_t fprint_len,
/* TODO: Warn here if the fingerprint we got doesn't match the one
we asked for? */
return keyserver_get (ctrl, &desc, 1, keyserver);
return keyserver_get (ctrl, &desc, 1, keyserver, NULL, NULL);
}
int
@ -1112,7 +1133,7 @@ keyserver_import_keyid (ctrl_t ctrl,
desc.u.kid[0]=keyid[0];
desc.u.kid[1]=keyid[1];
return keyserver_get (ctrl, &desc,1, keyserver);
return keyserver_get (ctrl, &desc,1, keyserver, NULL, NULL);
}
/* code mostly stolen from do_export_stream */
@ -1316,7 +1337,7 @@ keyserver_refresh (ctrl_t ctrl, strlist_t users)
/* We use the keyserver structure we parsed out before.
Note that a preferred keyserver without a scheme://
will be interpreted as hkp:// */
rc = keyserver_get (ctrl, &desc[i], 1, keyserver);
rc = keyserver_get (ctrl, &desc[i], 1, keyserver, NULL, NULL);
if(rc)
log_info(_("WARNING: unable to refresh key %s"
" via %s: %s\n"),keystr_from_desc(&desc[i]),
@ -1346,7 +1367,7 @@ keyserver_refresh (ctrl_t ctrl, strlist_t users)
count,opt.keyserver->uri);
}
rc=keyserver_get (ctrl, desc, numdesc, NULL);
rc=keyserver_get (ctrl, desc, numdesc, NULL, NULL, NULL);
}
xfree(desc);
@ -1469,21 +1490,15 @@ keyserver_search (ctrl_t ctrl, strlist_t tokens)
/* Called using:
import_name:
rc = keyserver_work (ctrl, KS_GETNAME, list, NULL,
0, fpr, fpr_len, keyserver);
import_ldap:
rc = keyserver_work (ctrl, KS_GETNAME, list, NULL,
0, fpr, fpr_len, keyserver);
*/
/* Retrieve a key from a keyserver. The search pattern are in
(DESC,NDESC). Allowed search modes are keyid, fingerprint, and
exact searches. KEYSERVER gives an optional override keyserver. If
(R_FPR,R_FPRLEN) are not NULL, the may retrun the fingerprint of
one imported key. */
static gpg_error_t
keyserver_get (ctrl_t ctrl, KEYDB_SEARCH_DESC *desc, int ndesc,
struct keyserver_spec *keyserver)
struct keyserver_spec *keyserver,
unsigned char **r_fpr, size_t *r_fprlen)
{
gpg_error_t err = 0;
@ -1536,10 +1551,12 @@ keyserver_get (ctrl_t ctrl, KEYDB_SEARCH_DESC *desc, int ndesc,
}
else if(desc[idx].mode == KEYDB_SEARCH_MODE_EXACT)
{
/* FIXME: We don't need this. It is used as a dummy by
keyserver_fetch which passes an entire URL. Better use a
separate function here. */
pattern[npat] = xtrystrdup ("0x0000000000000000");
/* The Dirmngr uses also classify_user_id to detect the type
of the search string. By adding the '=' prefix we force
Dirmngr's KS_GET to consider this an exact search string.
(In gpg 1.4 and gpg 2.0 the keyserver helpers used the
KS_GETNAME command to indicate this.) */
pattern[npat] = strconcat ("=", desc[idx].u.name, NULL);
if (!pattern[npat])
err = gpg_error_from_syserror ();
else
@ -1578,7 +1595,7 @@ keyserver_get (ctrl_t ctrl, KEYDB_SEARCH_DESC *desc, int ndesc,
for (idx=0; idx < npat; idx++)
xfree (pattern[idx]);
xfree (pattern);
if (opt.verbose)
if (opt.verbose && source)
log_info ("data source: %s\n", source);
if (!err)
@ -1599,7 +1616,8 @@ keyserver_get (ctrl_t ctrl, KEYDB_SEARCH_DESC *desc, int ndesc,
never accept or send them but we better protect against rogue
keyservers. */
import_keys_es_stream (ctrl, datastream, stats_handle, NULL, NULL,
import_keys_es_stream (ctrl, datastream, stats_handle,
r_fpr, r_fprlen,
(opt.keyserver_options.import_options
| IMPORT_NO_SECKEY));
import_print_stats (stats_handle);
@ -1824,31 +1842,18 @@ keyserver_import_pka (ctrl_t ctrl,
return rc;
}
/* Import all keys that match name */
int
keyserver_import_name (ctrl_t ctrl, const char *name,
unsigned char **fpr, size_t *fpr_len,
struct keyserver_spec *keyserver)
{
strlist_t list=NULL;
int rc;
append_to_strlist(&list,name);
rc = gpg_error (GPG_ERR_NOT_IMPLEMENTED); /* FIXME */
/* keyserver_work (ctrl, KS_GETNAME, list, NULL, */
/* 0, fpr, fpr_len, keyserver); */
free_strlist(list);
return rc;
}
/* Import a key by name using LDAP */
int
keyserver_import_ldap (ctrl_t ctrl,
const char *name,unsigned char **fpr,size_t *fpr_len)
const char *name, unsigned char **fpr, size_t *fprlen)
{
(void)ctrl;
(void)name;
(void)fpr;
(void)fprlen;
return gpg_error (GPG_ERR_NOT_IMPLEMENTED); /*FIXME*/
#if 0
char *domain;
struct keyserver_spec *keyserver;
strlist_t list=NULL;
@ -1919,4 +1924,5 @@ keyserver_import_ldap (ctrl_t ctrl,
free_keyserver_spec(keyserver);
return rc;
#endif
}