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Code Activity

dirmngr: New command AD_QUERY.

Browse Source 
* dirmngr/dirmngr.h: Include name-value.h
(struct server_control_s): Add rootdse and rootdse_tried.
* dirmngr/dirmngr.c (dirmngr_deinit_default_ctrl): Release them.
* dirmngr/ks-engine.h (KS_GET_FLAG_ROOTDSE): Add two new flags.
* dirmngr/ks-engine-ldap.c: Include ks-action.h
(SERVERINFO_GENERIC): New.
(struct ks_engine_ldap_local_s): Add scope.
(ks_ldap_new_state): Set a default scope.
(ks_ldap_clear_state): Ditto.
(my_ldap_connect): Add flag generic.
(return_all_attributes): New.
(fetch_rootdse): New.
(basedn_from_rootdse): New.
(ks_ldap_get): Move some code out to ...
(ks_ldap_prepare_my_state): New.
(ks_ldap_query): New.
* dirmngr/ks-action.c (ks_action_parse_uri): Factored out from server.c
(ks_action_query): New.
* dirmngr/server.c (make_keyserver_item): Factored most code out to
ks_action_parse_uri.
(cmd_ad_query): New.
--

This command allows to query the Windows Active directory.
This commit is contained in:
Werner Koch 2023-03-20 19:24:49 +01:00
parent f5347fbc25
commit 625aeb65b0
No known key found for this signature in database
GPG Key ID: E3FDFF218E45B72B
8 changed files with 758 additions and 138 deletions
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2
dirmngr/dirmngr.c
View File

@ -1705,6 +1705,8 @@ dirmngr_deinit_default_ctrl (ctrl_t ctrl)
xfree (ctrl->http_proxy);
ctrl->http_proxy = NULL;
nvc_release (ctrl->rootdse);
ctrl->rootdse = NULL;
}

6
dirmngr/dirmngr.h
View File

@ -36,6 +36,7 @@
#include "../common/sysutils.h" /* (gnupg_fd_t) */
#include "../common/asshelp.h" /* (assuan_context_t) */
#include "../common/i18n.h"
#include "../common/name-value.h"
#include "dirmngr-status.h"
#include "http.h" /* (parsed_uri_t) */
@ -220,9 +221,12 @@ struct server_control_s
int audit_events; /* Send audit events to client. */
char *http_proxy; /* The used http_proxy or NULL. */
nvc_t rootdse; /* Container wit the rootDSE properties. */
unsigned int timeout; /* Timeout for connect calls in ms. */
unsigned int http_no_crl:1; /* Do not check CRLs for https. */
unsigned int rootdse_tried:1;/* Already tried to get the rootDSE. */
};
@ -241,6 +245,8 @@ void ks_hkp_reload (void);
void ks_hkp_init (void);
/*-- server.c --*/
void release_uri_item_list (uri_item_t list);
ldap_server_t get_ldapservers_from_ctrl (ctrl_t ctrl);
ksba_cert_t get_cert_local (ctrl_t ctrl, const char *issuer);
ksba_cert_t get_issuing_cert_local (ctrl_t ctrl, const char *issuer);

2
dirmngr/dirmngr_ldap.c
View File

@ -823,7 +823,7 @@ fetch_ldap (LDAP *ld, const char *base, int scope, const char *filter)
/* Main processing. Take the filter and run the LDAP query. The
* result is printed to stdout, errors are logged to the log stream.
* To allow searching with a different base it is possible to extend
* the filer. For example:
* the filter. For example:
*
* ^CN=foo, OU=My Users&(objectClasses=*)
*

145
dirmngr/ks-action.c
View File

@ -34,6 +34,100 @@
# include "ldap-parse-uri.h"
#endif
/* Parse an URI and store it in a new parsed URI item object which is
* returned at R_PARSEDURI (with its next set to NULL). On error an
* error code is returned an NULL stored at R_PARSEDITEM. */
gpg_error_t
ks_action_parse_uri (const char *uri, uri_item_t *r_parseduri)
{
gpg_error_t err;
uri_item_t item;
char *tmpstr = NULL;
#if USE_LDAP
const char *s;
#endif
*r_parseduri = NULL;
if (!uri)
return gpg_error (GPG_ERR_INV_URI);
item = xtrymalloc (sizeof *item + strlen (uri));
if (!item)
return gpg_error_from_syserror ();
item->next = NULL;
item->parsed_uri = NULL;
strcpy (item->uri, uri);
#if USE_LDAP
if (!strncmp (uri, "ldap:", 5) && !(uri[5] == '/' && uri[6] == '/'))
{
/* Special ldap scheme given. This differs from a valid ldap
* scheme in that no double slash follows. We use
* http_parse_uri to put it as opaque value into parsed_uri. */
tmpstr = strconcat ("opaque:", uri+5, NULL);
if (!tmpstr)
err = gpg_error_from_syserror ();
else
err = http_parse_uri (&item->parsed_uri, tmpstr, 0);
}
else if ((s=strchr (uri, ':')) && !(s[1] == '/' && s[2] == '/'))
{
/* No valid scheme given. We use http_parse_uri to put the
* string as opaque value into parsed_uri. */
tmpstr = strconcat ("opaque:", uri, NULL);
if (!tmpstr)
err = gpg_error_from_syserror ();
else
err = http_parse_uri (&item->parsed_uri, tmpstr, 0);
}
else if (ldap_uri_p (uri))
{
int fixup = 0;
/* Fixme: We should get rid of that parser and replace it with
* our generic (http) URI parser. */
/* If no port has been specified and the scheme ist ldaps we use
* our idea of the default port because the standard LDAP URL
* parser would use 636 here. This is because we redefined
* ldaps to mean starttls. */
#ifdef HAVE_W32_SYSTEM
if (!strcmp (uri, "ldap:///"))
fixup = 1;
else
#endif
if (!http_parse_uri (&item->parsed_uri,uri,HTTP_PARSE_NO_SCHEME_CHECK))
{
if (!item->parsed_uri->port
&& !strcmp (item->parsed_uri->scheme, "ldaps"))
fixup = 2;
http_release_parsed_uri (item->parsed_uri);
item->parsed_uri = NULL;
}
err = ldap_parse_uri (&item->parsed_uri, uri);
if (!err && fixup == 1)
item->parsed_uri->ad_current = 1;
else if (!err && fixup == 2)
item->parsed_uri->port = 389;
}
else
#endif /* USE_LDAP */
{
err = http_parse_uri (&item->parsed_uri, uri, HTTP_PARSE_NO_SCHEME_CHECK);
}
xfree (tmpstr);
if (err)
xfree (item);
else
*r_parseduri = item;
return err;
}
/* Called by the engine's help functions to print the actual help. */
gpg_error_t
ks_print_help (ctrl_t ctrl, const char *text)
@ -270,7 +364,7 @@ ks_action_get (ctrl_t ctrl, uri_item_t keyservers,
|| strcmp (uri->parsed_uri->scheme, "https") == 0);
int is_ldap = 0;
if ((ks_get_flags & KS_GET_FLAG_ONLY_LDAP))
if ((ks_get_flags & (KS_GET_FLAG_ONLY_LDAP|KS_GET_FLAG_ONLY_AD)))
is_hkp_s = is_http_s = 0;
#if USE_LDAP
@ -448,3 +542,52 @@ ks_action_put (ctrl_t ctrl, uri_item_t keyservers,
err = first_err;
return err;
}
/* Query the default LDAP server or the one given by URL using
* the filter expression FILTER. Write the result to OUTFP. */
gpg_error_t
ks_action_query (ctrl_t ctrl, const char *url, unsigned int ks_get_flags,
const char *filter, char **attrs, estream_t outfp)
{
#if USE_LDAP
gpg_error_t err;
estream_t infp = NULL;
uri_item_t puri; /* The broken down URI (only one item used). */
if (!url && (ks_get_flags & KS_GET_FLAG_ROOTDSE))
url = "ldap://";
err = ks_action_parse_uri (url, &puri);
if (err)
return err;
if ((ks_get_flags & KS_GET_FLAG_ROOTDSE))
{
/* Reset authentication for a serverless connection. */
puri->parsed_uri->ad_current = 0;
puri->parsed_uri->auth = NULL;
}
if (!strcmp (puri->parsed_uri->scheme, "ldap")
|| !strcmp (puri->parsed_uri->scheme, "ldaps")
|| !strcmp (puri->parsed_uri->scheme, "ldapi")
|| puri->parsed_uri->opaque)
{
err = ks_ldap_query (ctrl, puri->parsed_uri, ks_get_flags, filter,
attrs, &infp);
if (!err)
err = copy_stream (infp, outfp);
}
else
err = gpg_error (GPG_ERR_CONFIGURATION); /* No LDAP server known. */
es_fclose (infp);
release_uri_item_list (puri);
return err;
#else /* !USE_LDAP */
return gpg_error (GPG_ERR_NOT_IMPLEMENTED);
#endif
}

4
dirmngr/ks-action.h
View File

@ -21,6 +21,7 @@
#ifndef DIRMNGR_KS_ACTION_H
#define DIRMNGR_KS_ACTION_H 1
gpg_error_t ks_action_parse_uri (const char *uri, uri_item_t *r_parseduri);
gpg_error_t ks_action_help (ctrl_t ctrl, const char *url);
gpg_error_t ks_action_resolve (ctrl_t ctrl, uri_item_t keyservers);
gpg_error_t ks_action_search (ctrl_t ctrl, uri_item_t keyservers,
@ -32,6 +33,9 @@ gpg_error_t ks_action_fetch (ctrl_t ctrl, const char *url, estream_t outfp);
gpg_error_t ks_action_put (ctrl_t ctrl, uri_item_t keyservers,
void *data, size_t datalen,
void *info, size_t infolen);
gpg_error_t ks_action_query (ctrl_t ctrl, const char *ldapserver,
unsigned int ks_get_flags,
const char *filter, char **attr, estream_t outfp);
#endif /*DIRMNGR_KS_ACTION_H*/

567
dirmngr/ks-engine-ldap.c
View File

@ -1,7 +1,7 @@
/* ks-engine-ldap.c - talk to a LDAP keyserver
* Copyright (C) 2001, 2002, 2004, 2005, 2006
* 2007 Free Software Foundation, Inc.
* Copyright (C) 2015, 2020 g10 Code GmbH
* Copyright (C) 2015, 2020, 2023 g10 Code GmbH
*
* This file is part of GnuPG.
*
@ -32,6 +32,7 @@
#include "misc.h"
#include "../common/userids.h"
#include "../common/mbox-util.h"
#include "ks-action.h"
#include "ks-engine.h"
#include "ldap-misc.h"
#include "ldap-parse-uri.h"
@ -43,6 +44,7 @@
#define SERVERINFO_PGPKEYV2 2 /* Needs "pgpKeyV2" instead of "pgpKey"*/
#define SERVERINFO_SCHEMAV2 4 /* Version 2 of the Schema. */
#define SERVERINFO_NTDS 8 /* Server is an Active Directory. */
#define SERVERINFO_GENERIC 16 /* Connected in genric mode. */
/* The page size requested from the server. */
@ -61,6 +63,7 @@ struct ks_engine_ldap_local_s
LDAPMessage *message;
LDAPMessage *msg_iter; /* Iterator for message. */
unsigned int serverinfo;
int scope;
char *basedn;
char *keyspec;
char *filter;
@ -192,7 +195,12 @@ ks_ldap_help (ctrl_t ctrl, parsed_uri_t uri)
static struct ks_engine_ldap_local_s *
ks_ldap_new_state (void)
{
return xtrycalloc (1, sizeof(struct ks_engine_ldap_local_s));
struct ks_engine_ldap_local_s *state;
state = xtrycalloc (1, sizeof(struct ks_engine_ldap_local_s));
if (state)
state->scope = LDAP_SCOPE_SUBTREE;
return state;
}
@ -217,6 +225,7 @@ ks_ldap_clear_state (struct ks_engine_ldap_local_s *state)
}
state->serverinfo = 0;
xfree (state->basedn);
state->scope = LDAP_SCOPE_SUBTREE;
state->basedn = NULL;
xfree (state->keyspec);
state->keyspec = NULL;
@ -240,6 +249,45 @@ ks_ldap_free_state (struct ks_engine_ldap_local_s *state)
}
/* Helper for ks_ldap_get and ks_ldap_query. On return first_mode and
* next_mode are set accordingly. */
static gpg_error_t
ks_ldap_prepare_my_state (ctrl_t ctrl, unsigned int ks_get_flags,
int *first_mode, int *next_mode)
{
*first_mode = *next_mode = 0;
if ((ks_get_flags & KS_GET_FLAG_FIRST))
{
if (ctrl->ks_get_state)
ks_ldap_clear_state (ctrl->ks_get_state);
else if (!(ctrl->ks_get_state = ks_ldap_new_state ()))
return gpg_error_from_syserror ();
*first_mode = 1;
}
if ((ks_get_flags & KS_GET_FLAG_NEXT))
{
if (!ctrl->ks_get_state || !ctrl->ks_get_state->ldap_conn
|| !ctrl->ks_get_state->message)
{
log_error ("ks-ldap: --next requested but no state\n");
return gpg_error (GPG_ERR_INV_STATE);
}
*next_mode = 1;
}
/* Do not keep an old state around if not needed. */
if (!(*first_mode || *next_mode))
{
ks_ldap_free_state (ctrl->ks_get_state);
ctrl->ks_get_state = NULL;
}
return 0;
}
/* Convert a keyspec to a filter. Return an error if the keyspec is
bad or is not supported. The filter is escaped and returned in
@ -437,7 +485,9 @@ interrogate_ldap_dn (LDAP *ldap_conn, const char *basedn_search,
*
* URI describes the server to connect to and various options
* including whether to use TLS and the username and password (see
* ldap_parse_uri for a description of the various fields).
* ldap_parse_uri for a description of the various fields). Be
* default a PGP keyserver is assumed; if GENERIC is true a generic
* ldap conenction is instead established.
*
* Returns: The ldap connection handle in *LDAP_CONNP, R_BASEDN is set
* to the base DN for the PGP key space, several flags will be stored
@ -450,7 +500,7 @@ interrogate_ldap_dn (LDAP *ldap_conn, const char *basedn_search,
* If it is NULL, then the server does not appear to be an OpenPGP
* keyserver. */
static gpg_error_t
my_ldap_connect (parsed_uri_t uri, LDAP **ldap_connp,
my_ldap_connect (parsed_uri_t uri, unsigned int generic, LDAP **ldap_connp,
char **r_basedn, char **r_host, int *r_use_tls,
unsigned int *r_serverinfo)
{
@ -519,15 +569,15 @@ my_ldap_connect (parsed_uri_t uri, LDAP **ldap_connp,
}
if (opt.verbose)
log_info ("ldap connect to '%s:%d:%s:%s:%s:%s%s%s'\n",
log_info ("ldap connect to '%s:%d:%s:%s:%s:%s%s%s'%s\n",
host, port,
basedn_arg ? basedn_arg : "",
bindname ? bindname : "",
password ? "*****" : "",
use_tls == 1? "starttls" : use_tls == 2? "ldaptls" : "plain",
use_ntds ? ",ntds":"",
use_areconly? ",areconly":"");
use_areconly? ",areconly":"",
generic? " (generic)":"");
/* If the uri specifies a secure connection and we don't support
TLS, then fail; don't silently revert to an insecure
@ -535,7 +585,7 @@ my_ldap_connect (parsed_uri_t uri, LDAP **ldap_connp,
if (use_tls)
{
#ifndef HAVE_LDAP_START_TLS_S
log_error ("ldap: can't connect to the server: no TLS support.");
log_error ("ks-ldap: can't connect to the server: no TLS support.");
err = GPG_ERR_LDAP_NOT_SUPPORTED;
goto out;
#endif
@ -607,6 +657,8 @@ my_ldap_connect (parsed_uri_t uri, LDAP **ldap_connp,
{
int ver = opt.ldaptimeout;
/* fixme: also use LDAP_OPT_SEND_TIMEOUT? */
lerr = ldap_set_option (ldap_conn, LDAP_OPT_TIMELIMIT, &ver);
if (lerr != LDAP_SUCCESS)
{
@ -699,7 +751,21 @@ my_ldap_connect (parsed_uri_t uri, LDAP **ldap_connp,
/* By default we don't bind as there is usually no need to. */
}
if (basedn_arg && *basedn_arg)
if (generic)
{
/* Generic use of this function for arbitrary LDAP servers. */
*r_serverinfo |= SERVERINFO_GENERIC;
if (basedn_arg && *basedn_arg)
{
basedn = xtrystrdup (basedn_arg);
if (!basedn)
{
err = gpg_error_from_syserror ();
goto out;
}
}
}
else if (basedn_arg && *basedn_arg)
{
/* User specified base DN. In this case we know the server is a
* real LDAP server. */
@ -819,11 +885,15 @@ my_ldap_connect (parsed_uri_t uri, LDAP **ldap_connp,
if (!err && opt.debug)
{
log_debug ("ldap_conn: %p\n", ldap_conn);
log_debug ("server_type: %s\n", ((*r_serverinfo & SERVERINFO_REALLDAP)
? "LDAP" : "PGP.com keyserver") );
log_debug ("server_type: %s\n",
((*r_serverinfo & SERVERINFO_GENERIC)
? "Generic" :
(*r_serverinfo & SERVERINFO_REALLDAP)
? "LDAP" : "PGP.com keyserver") );
log_debug ("basedn: %s\n", basedn);
log_debug ("pgpkeyattr: %s\n",
(*r_serverinfo & SERVERINFO_PGPKEYV2)? "pgpKeyV2":"pgpKey");
if (!(*r_serverinfo & SERVERINFO_GENERIC))
log_debug ("pgpkeyattr: %s\n",
(*r_serverinfo & SERVERINFO_PGPKEYV2)? "pgpKeyV2":"pgpKey");
}
ldapserver_list_free (server);
@ -1028,11 +1098,132 @@ return_one_keyblock (LDAP *ldap_conn, LDAPMessage *msg, unsigned int serverinfo,
}
/* Helper for ks_ldap_get. Note that KEYSPEC is only used for
* diagnostics. */
/* Helper for ks_ldap_query. Returns 0 if an attr was fetched and
* printed to FP. The error code GPG_ERR_NO_DATA is returned if no
* data was printed. Note that FP is updated by this function. */
static gpg_error_t
return_all_attributes (LDAP *ld, LDAPMessage *msg, estream_t *fp)
{
gpg_error_t err = 0;
BerElement *berctx = NULL;
char *attr = NULL;
const char *attrprefix;
struct berval **values = NULL;
int idx;
int any = 0;
const char *s;
const char *val;
size_t len;
char *mydn;
mydn = ldap_get_dn (ld, msg);
if (!*fp)
{
*fp = es_fopenmem(0, "rw");
if (!*fp)
{
err = gpg_error_from_syserror ();
goto leave;
}
}
/* Always print the DN - note that by using only unbkown attributes
* it is pissible to list just the DNs with out addiional
* linefeeds. */
es_fprintf (*fp, "Dn: %s\n", mydn? mydn : "[oops DN missing]");
for (npth_unprotect (), attr = ldap_first_attribute (ld, msg, &berctx),
npth_protect ();
attr;
npth_unprotect (), attr = ldap_next_attribute (ld, msg, berctx),
npth_protect ())
{
npth_unprotect ();
values = ldap_get_values_len (ld, msg, attr);
npth_protect ();
if (!values)
{
if (opt.verbose)
log_info ("attribute '%s' not found\n", attr);
ldap_memfree (attr);
attr = NULL;
continue;
}
any = 1;
if (opt.verbose > 1)
{
log_info ("found attribute '%s'\n", attr);
for (idx=0; values[idx]; idx++)
log_info (" length[%d]=%d\n",
idx, (int)values[0]->bv_len);
}
if (!ascii_strcasecmp (attr, "Dn"))
attrprefix = "X-";
else if (*attr == '#')
attrprefix = "X-hash-";
else if (*attr == ' ')
attrprefix = "X-blank-";
else
attrprefix = "";
/* FIXME: We should remap all invalid chars in ATTR. */
for (idx=0; values[idx]; idx++)
{
es_fprintf (*fp, "%s%s: ", attrprefix, attr);
val = values[idx]->bv_val;
len = values[idx]->bv_len;
while (len && (s = memchr (val, '\n', len)))
{
s++; /* We als want to print the LF. */
if (es_fwrite (val, s - val, 1, *fp) != 1)
goto fwrite_failed;
len -= (s-val);
val = s;
if (len && es_fwrite (" ", 1, 1, *fp) != 1)
goto fwrite_failed;
}
if (len && es_fwrite (val, len, 1, *fp) != 1)
goto fwrite_failed;
if (es_fwrite ("\n", 1, 1, *fp) != 1) /* Final LF. */
goto fwrite_failed;
}
ldap_value_free_len (values);
values = NULL;
ldap_memfree (attr);
attr = NULL;
}
/* One final linefeed to prettify the output. */
if (any && es_fwrite ("\n", 1, 1, *fp) != 1)
goto fwrite_failed;
leave:
if (values)
ldap_value_free_len (values);
ldap_memfree (attr);
if (mydn)
ldap_memfree (mydn);
ber_free (berctx, 0);
return err;
fwrite_failed:
err = gpg_error_from_syserror ();
log_error ("error writing to stdout: %s\n", gpg_strerror (err));
goto leave;
}
/* Helper for ks_ldap_get and ks_ldap_query. Note that KEYSPEC is
* only used for diagnostics. */
static gpg_error_t
search_and_parse (ctrl_t ctrl, const char *keyspec,
LDAP *ldap_conn, char *basedn, char *filter,
LDAP *ldap_conn, char *basedn, int scope, char *filter,
char **attrs, LDAPMessage **r_message)
{
gpg_error_t err = 0;
@ -1065,7 +1256,7 @@ search_and_parse (ctrl_t ctrl, const char *keyspec,
}
npth_unprotect ();
l_err = ldap_search_ext_s (ldap_conn, basedn, LDAP_SCOPE_SUBTREE,
l_err = ldap_search_ext_s (ldap_conn, basedn, scope,
filter, attrs, 0,
srvctrls[0]? srvctrls : NULL, NULL, NULL, 0,
r_message);
@ -1130,7 +1321,7 @@ search_and_parse (ctrl_t ctrl, const char *keyspec,
if (count < 1)
{
if (!ctrl->ks_get_state || ctrl->ks_get_state->pageno == 1)
log_info ("ks-ldap: key %s not found on keyserver\n", keyspec);
log_info ("ks-ldap: '%s' not found on LDAP server\n", keyspec);
if (count == -1)
err = ldap_to_gpg_err (ldap_conn);
@ -1150,6 +1341,77 @@ search_and_parse (ctrl_t ctrl, const char *keyspec,
}
/* Fetch all entries from the RootDSE and return them as a name value
* object. */
static nvc_t
fetch_rootdse (ctrl_t ctrl, parsed_uri_t uri)
{
gpg_error_t err;
estream_t infp = NULL;
uri_item_t puri; /* The broken down URI (only one item used). */
nvc_t nvc = NULL;
/* FIXME: We need the unparsed URI here - use uri_item_t instead
* of fix the parser to fill in original */
err = ks_action_parse_uri (uri && uri->original? uri->original : "ldap://",
&puri);
if (err)
return NULL;
/* Reset authentication for a serverless. */
puri->parsed_uri->ad_current = 0;
puri->parsed_uri->auth = NULL;
if (!strcmp (puri->parsed_uri->scheme, "ldap")
|| !strcmp (puri->parsed_uri->scheme, "ldaps")
|| !strcmp (puri->parsed_uri->scheme, "ldapi")
|| puri->parsed_uri->opaque)
{
err = ks_ldap_query (ctrl, puri->parsed_uri, KS_GET_FLAG_ROOTDSE,
"^&base&(objectclass=*)", NULL, &infp);
if (err)
log_error ("ldap: reading the rootDES failed: %s\n",
gpg_strerror (err));
else if ((err = nvc_parse (&nvc, NULL, infp)))
log_error ("parsing the rootDES failed: %s\n", gpg_strerror (err));
}
es_fclose (infp);
release_uri_item_list (puri);
if (err)
{
nvc_release (nvc);
nvc = NULL;
}
return nvc;
}
/* Return the baseDN for URI which might have already been cached for
* this session. */
static char *
basedn_from_rootdse (ctrl_t ctrl, parsed_uri_t uri)
{
const char *s;
if (!ctrl->rootdse && !ctrl->rootdse_tried)
{
ctrl->rootdse = fetch_rootdse (ctrl, uri);
ctrl->rootdse_tried = 1;
if (ctrl->rootdse)
{
log_debug ("Dump of all rootDSE attributes:\n");
nvc_write (ctrl->rootdse, log_get_stream ());
log_debug ("End of dump\n");
}
}
s = nvc_get_string (ctrl->rootdse, "defaultNamingContext:");
return s? xtrystrdup (s): NULL;
}
/* Get the key described key the KEYSPEC string from the keyserver
* identified by URI. On success R_FP has an open stream to read the
* data. KS_GET_FLAGS conveys flags from the client. */
@ -1157,13 +1419,14 @@ gpg_error_t
ks_ldap_get (ctrl_t ctrl, parsed_uri_t uri, const char *keyspec,
unsigned int ks_get_flags, estream_t *r_fp)
{
gpg_error_t err = 0;
gpg_error_t err;
unsigned int serverinfo;
char *host = NULL;
int use_tls;
char *filter = NULL;
LDAP *ldap_conn = NULL;
char *basedn = NULL;
int scope = LDAP_SCOPE_SUBTREE;
estream_t fp = NULL;
LDAPMessage *message = NULL;
LDAPMessage *msg;
@ -1184,41 +1447,14 @@ ks_ldap_get (ctrl_t ctrl, parsed_uri_t uri, const char *keyspec,
NULL
};
(void) ctrl;
if (dirmngr_use_tor ())
{
return no_ldap_due_to_tor (ctrl);
}
/* Make sure we got a state. */
if ((ks_get_flags & KS_GET_FLAG_FIRST))
{
if (ctrl->ks_get_state)
ks_ldap_clear_state (ctrl->ks_get_state);
else if (!(ctrl->ks_get_state = ks_ldap_new_state ()))
return gpg_error_from_syserror ();
first_mode = 1;
}
if ((ks_get_flags & KS_GET_FLAG_NEXT))
{
if (!ctrl->ks_get_state || !ctrl->ks_get_state->ldap_conn
|| !ctrl->ks_get_state->message)
{
log_error ("ks_ldap: --next requested but no state\n");
return gpg_error (GPG_ERR_INV_STATE);
}
next_mode = 1;
}
/* Do not keep an old state around if not needed. */
if (!(first_mode || next_mode))
{
ks_ldap_free_state (ctrl->ks_get_state);
ctrl->ks_get_state = NULL;
}
err = ks_ldap_prepare_my_state (ctrl, ks_get_flags, &first_mode, &next_mode);
if (err)
return err;
if (next_mode)
{
@ -1236,6 +1472,7 @@ ks_ldap_get (ctrl_t ctrl, parsed_uri_t uri, const char *keyspec,
err = search_and_parse (ctrl, ctrl->ks_get_state->keyspec,
ctrl->ks_get_state->ldap_conn,
ctrl->ks_get_state->basedn,
ctrl->ks_get_state->scope,
ctrl->ks_get_state->filter,
attrs,
&ctrl->ks_get_state->message);
@ -1284,7 +1521,7 @@ ks_ldap_get (ctrl_t ctrl, parsed_uri_t uri, const char *keyspec,
else /* Not in --next mode. */
{
/* Make sure we are talking to an OpenPGP LDAP server. */
err = my_ldap_connect (uri, &ldap_conn,
err = my_ldap_connect (uri, 0, &ldap_conn,
&basedn, &host, &use_tls, &serverinfo);
if (err || !basedn)
{
@ -1311,8 +1548,8 @@ ks_ldap_get (ctrl_t ctrl, parsed_uri_t uri, const char *keyspec,
/* Replace "dummy". */
attrs[0] = (serverinfo & SERVERINFO_PGPKEYV2)? "pgpKeyV2" : "pgpKey";
err = search_and_parse (ctrl, keyspec, ldap_conn, basedn, filter, attrs,
&message);
err = search_and_parse (ctrl, keyspec, ldap_conn, basedn, scope,
filter, attrs, &message);
if (err)
goto leave;
@ -1363,6 +1600,7 @@ ks_ldap_get (ctrl_t ctrl, parsed_uri_t uri, const char *keyspec,
ctrl->ks_get_state->message = message;
message = NULL;
ctrl->ks_get_state->serverinfo = serverinfo;
ctrl->ks_get_state->scope = scope;
ctrl->ks_get_state->basedn = basedn;
basedn = NULL;
ctrl->ks_get_state->keyspec = keyspec? xtrystrdup (keyspec) : NULL;
@ -1423,7 +1661,7 @@ ks_ldap_search (ctrl_t ctrl, parsed_uri_t uri, const char *pattern,
}
/* Make sure we are talking to an OpenPGP LDAP server. */
err = my_ldap_connect (uri, &ldap_conn, &basedn, NULL, NULL, &serverinfo);
err = my_ldap_connect (uri, 0, &ldap_conn, &basedn, NULL, NULL, &serverinfo);
if (err || !basedn)
{
if (!err)
@ -2312,7 +2550,7 @@ ks_ldap_put (ctrl_t ctrl, parsed_uri_t uri,
return no_ldap_due_to_tor (ctrl);
}
err = my_ldap_connect (uri, &ldap_conn, &basedn, NULL, NULL, &serverinfo);
err = my_ldap_connect (uri, 0, &ldap_conn, &basedn, NULL, NULL, &serverinfo);
if (err || !basedn)
{
if (!err)
@ -2538,3 +2776,224 @@ ks_ldap_put (ctrl_t ctrl, parsed_uri_t uri,
return err;
}
/* Get the data described by FILTER_ARG from URI. On success R_FP has
* an open stream to read the data. KS_GET_FLAGS conveys flags from
* the client. ATTRS is a NULL terminated list of attributes to
* return or NULL for all. */
gpg_error_t
ks_ldap_query (ctrl_t ctrl, parsed_uri_t uri, unsigned int ks_get_flags,
const char *filter_arg, char **attrs, estream_t *r_fp)
{
gpg_error_t err;
unsigned int serverinfo;
char *host = NULL;
int use_tls;
LDAP *ldap_conn = NULL;
char *basedn = NULL;
estream_t fp = NULL;
char *filter = NULL;
int scope = LDAP_SCOPE_SUBTREE;
LDAPMessage *message = NULL;
LDAPMessage *msg;
int anydata = 0;
int first_mode = 0;
int next_mode = 0;
int get_first;
if (dirmngr_use_tor ())
return no_ldap_due_to_tor (ctrl);
if ((!filter_arg || !*filter_arg) && (ks_get_flags & KS_GET_FLAG_ROOTDSE))
filter_arg = "^&base&(objectclass=*)";
err = ks_ldap_prepare_my_state (ctrl, ks_get_flags, &first_mode, &next_mode);
if (err)
goto leave;
if (!next_mode) /* (In --next mode the filter is ignored.) */
{
if (!filter_arg || !*filter_arg)
{
err = gpg_error (GPG_ERR_LDAP_FILTER);
goto leave;
}
err = ldap_parse_extfilter (filter_arg, 0, &basedn, &scope, &filter);
if (err)
goto leave;
}
if (next_mode)
{
next_again:
if (!ctrl->ks_get_state->msg_iter && ctrl->ks_get_state->more_pages)
{
/* Get the next page of results. */
if (ctrl->ks_get_state->message)
{
ldap_msgfree (ctrl->ks_get_state->message);
ctrl->ks_get_state->message = NULL;
}
err = search_and_parse (ctrl, ctrl->ks_get_state->keyspec,
ctrl->ks_get_state->ldap_conn,
ctrl->ks_get_state->basedn,
ctrl->ks_get_state->scope,
ctrl->ks_get_state->filter,
attrs,
&ctrl->ks_get_state->message);
if (err)
goto leave;
ctrl->ks_get_state->msg_iter = ctrl->ks_get_state->message;
get_first = 1;
}
else
get_first = 0;
while (ctrl->ks_get_state->msg_iter)
{
npth_unprotect ();
ctrl->ks_get_state->msg_iter
= get_first? ldap_first_entry (ctrl->ks_get_state->ldap_conn,
ctrl->ks_get_state->msg_iter)
/* */ : ldap_next_entry (ctrl->ks_get_state->ldap_conn,
ctrl->ks_get_state->msg_iter);
npth_protect ();
get_first = 0;
if (ctrl->ks_get_state->msg_iter)
{
err = return_all_attributes (ctrl->ks_get_state->ldap_conn,
ctrl->ks_get_state->msg_iter,
&fp);
if (!err)
break; /* Found. */
else if (gpg_err_code (err) == GPG_ERR_NO_DATA)
err = 0; /* Skip empty attributes. */
else
goto leave;
}
}
if (!ctrl->ks_get_state->msg_iter || !fp)
{
ctrl->ks_get_state->msg_iter = NULL;
if (ctrl->ks_get_state->more_pages)
goto next_again;
err = gpg_error (GPG_ERR_NO_DATA);
}
}
else /* Not in --next mode. */
{
/* Connect to the LDAP server in generic mode. */
char *tmpbasedn;
err = my_ldap_connect (uri, 1 /*generic*/, &ldap_conn,
&tmpbasedn, &host, &use_tls, &serverinfo);
if (err)
goto leave;
if (basedn)
xfree (tmpbasedn); /* Extended syntax overrides. */
else if (tmpbasedn)
basedn = tmpbasedn;
else if (!(ks_get_flags & KS_GET_FLAG_ROOTDSE))
{
/* No BaseDN known - get one. */
basedn = basedn_from_rootdse (ctrl, uri);
}
if (opt.debug)
{
log_debug ("ks-ldap: using basedn: %s\n", basedn);
log_debug ("ks-ldap: using filter: %s\n", filter);
}
err = search_and_parse (ctrl, filter, ldap_conn, basedn, scope, filter,
attrs, &message);
if (err)
goto leave;
for (npth_unprotect (),
msg = ldap_first_entry (ldap_conn, message),
npth_protect ();
msg;
npth_unprotect (),
msg = ldap_next_entry (ldap_conn, msg),
npth_protect ())
{
err = return_all_attributes (ldap_conn, msg, &fp);
if (!err)
{
anydata = 1;
if (first_mode)
break;
}
else if (gpg_err_code (err) == GPG_ERR_NO_DATA)
err = 0; /* Skip empty/duplicate attributes. */
else
goto leave;
}
if (ctrl->ks_get_state) /* Save the iterator. */
ctrl->ks_get_state->msg_iter = msg;
if (!fp) /* Nothing was found. */
err = gpg_error (GPG_ERR_NO_DATA);
if (!err && anydata)
err = dirmngr_status_printf (ctrl, "SOURCE", "%s://%s",
use_tls? "ldaps" : "ldap",
host? host:"");
}
leave:
/* Store our state if needed. */
if (!err && (ks_get_flags & KS_GET_FLAG_FIRST))
{
log_assert (!ctrl->ks_get_state->ldap_conn);
ctrl->ks_get_state->ldap_conn = ldap_conn;
ldap_conn = NULL;
log_assert (!ctrl->ks_get_state->message);
ctrl->ks_get_state->message = message;
message = NULL;
ctrl->ks_get_state->serverinfo = serverinfo;
ctrl->ks_get_state->scope = scope;
ctrl->ks_get_state->basedn = basedn;
basedn = NULL;
ctrl->ks_get_state->keyspec = filter? xtrystrdup (filter) : NULL;
ctrl->ks_get_state->filter = filter;
filter = NULL;
}
if ((ks_get_flags & KS_GET_FLAG_NEXT))
{
/* Keep the state in --next mode even with errors. */
ldap_conn = NULL;
message = NULL;
}
if (message)
ldap_msgfree (message);
if (err)
es_fclose (fp);
else
{
if (fp)
es_fseek (fp, 0, SEEK_SET);
*r_fp = fp;
}
xfree (basedn);
xfree (host);
if (ldap_conn)
ldap_unbind (ldap_conn);
xfree (filter);
return err;
}

5
dirmngr/ks-engine.h
View File

@ -27,6 +27,8 @@
#define KS_GET_FLAG_ONLY_LDAP 1
#define KS_GET_FLAG_FIRST 2
#define KS_GET_FLAG_NEXT 4
#define KS_GET_FLAG_ONLY_AD 8 /* Do this only if we have an AD. */
#define KS_GET_FLAG_ROOTDSE 16 /* Get the rootDSE. */
/*-- ks-action.c --*/
@ -78,6 +80,9 @@ gpg_error_t ks_ldap_get (ctrl_t ctrl, parsed_uri_t uri,
gpg_error_t ks_ldap_put (ctrl_t ctrl, parsed_uri_t uri,
void *data, size_t datalen,
void *info, size_t infolen);
gpg_error_t ks_ldap_query (ctrl_t ctrl, parsed_uri_t uri,
unsigned int ks_get_flags,
const char *filter, char **attrs, estream_t *r_fp);
#endif /*DIRMNGR_KS_ENGINE_H*/

165
dirmngr/server.c
View File

@ -146,7 +146,7 @@ get_ldapservers_from_ctrl (ctrl_t ctrl)
}
/* Release an uri_item_t list. */
static void
void
release_uri_item_list (uri_item_t list)
{
while (list)
@ -2147,15 +2147,6 @@ cmd_validate (assuan_context_t ctx, char *line)
static gpg_error_t
make_keyserver_item (const char *uri, uri_item_t *r_item)
{
gpg_error_t err;
uri_item_t item;
char *tmpstr = NULL;
#if USE_LDAP
const char *s;
#endif
*r_item = NULL;
/* We used to have DNS CNAME redirection from the URLs below to
* sks-keyserver. pools. The idea was to allow for a quick way to
* switch to a different set of pools. The problem with that
@ -2187,78 +2178,7 @@ make_keyserver_item (const char *uri, uri_item_t *r_item)
else if (!strcmp (uri, "http://http-keys.gnupg.net"))
uri = "hkp://keyserver.ubuntu.com:80";
item = xtrymalloc (sizeof *item + strlen (uri));
if (!item)
return gpg_error_from_syserror ();
item->next = NULL;
item->parsed_uri = NULL;
strcpy (item->uri, uri);
#if USE_LDAP
if (!strncmp (uri, "ldap:", 5) && !(uri[5] == '/' && uri[6] == '/'))
{
/* Special ldap scheme given. This differs from a valid ldap
* scheme in that no double slash follows.. Use http_parse_uri
* to put it as opaque value into parsed_uri. */
tmpstr = strconcat ("opaque:", uri+5, NULL);
if (!tmpstr)
err = gpg_error_from_syserror ();
else
err = http_parse_uri (&item->parsed_uri, tmpstr, 0);
}
else if ((s=strchr (uri, ':')) && !(s[1] == '/' && s[2] == '/'))
{
/* No valid scheme given. Use http_parse_uri to put the string
* as opaque value into parsed_uri. */
tmpstr = strconcat ("opaque:", uri, NULL);
if (!tmpstr)
err = gpg_error_from_syserror ();
else
err = http_parse_uri (&item->parsed_uri, tmpstr, 0);
}
else if (ldap_uri_p (uri))
{
int fixup = 0;
/* Fixme: We should get rid of that parser and replace it with
* our generic (http) URI parser. */
/* If no port has been specified and the scheme ist ldaps we use
* our idea of the default port because the standard LDAP URL
* parser would use 636 here. This is because we redefined
* ldaps to mean starttls. */
#ifdef HAVE_W32_SYSTEM
if (!strcmp (uri, "ldap:///"))
fixup = 1;
else
#endif
if (!http_parse_uri (&item->parsed_uri,uri,HTTP_PARSE_NO_SCHEME_CHECK))
{
if (!item->parsed_uri->port
&& !strcmp (item->parsed_uri->scheme, "ldaps"))
fixup = 2;
http_release_parsed_uri (item->parsed_uri);
item->parsed_uri = NULL;
}
err = ldap_parse_uri (&item->parsed_uri, uri);
if (!err && fixup == 1)
item->parsed_uri->ad_current = 1;
else if (!err && fixup == 2)
item->parsed_uri->port = 389;
}
else
#endif /* USE_LDAP */
{
err = http_parse_uri (&item->parsed_uri, uri, HTTP_PARSE_NO_SCHEME_CHECK);
}
xfree (tmpstr);
if (err)
xfree (item);
else
*r_item = item;
return err;
return ks_action_parse_uri (uri, r_item);
}
@ -2768,6 +2688,86 @@ cmd_ks_put (assuan_context_t ctx, char *line)
}
static const char hlp_ad_query[] =
"AD_QUERY [--first|--next] [--] <filter_expression> \n"
"\n"
"Query properties from a Windows Active Directory.\n"
"Our extended filter syntax may be used for the filter\n"
"expression; see gnupg/dirmngr/ldap-misc.c. There are\n"
"a couple of other options available:\n\n"
" --rootdse - Query the root using serverless binding,\n"
" --attr=<attribs> - Comma delimited list of attributes\n"
" to return.\n"
;
static gpg_error_t
cmd_ad_query (assuan_context_t ctx, char *line)
{
ctrl_t ctrl = assuan_get_pointer (ctx);
gpg_error_t err;
unsigned int flags = 0;
const char *filter;
estream_t outfp = NULL;
char *p;
char **opt_attr = NULL;
/* No options for now. */
if (has_option (line, "--first"))
flags |= KS_GET_FLAG_FIRST;
if (has_option (line, "--next"))
flags |= KS_GET_FLAG_NEXT;
if (has_option (line, "--rootdse"))
flags |= KS_GET_FLAG_ROOTDSE;
err = get_option_value (line, "--attr", &p);
if (err)
goto leave;
if (p)
{
opt_attr = strtokenize (p, ",");
if (!opt_attr)
{
err = gpg_error_from_syserror ();
xfree (p);
goto leave;
}
xfree (p);
}
line = skip_options (line);
filter = line;
if ((flags & KS_GET_FLAG_NEXT))
{
if (*filter || (flags & ~KS_GET_FLAG_NEXT))
{
err = PARM_ERROR ("No filter or other options allowed with --next");
goto leave;
}
}
/* Setup an output stream and perform the get. */
outfp = es_fopencookie (ctx, "w", data_line_cookie_functions);
if (!outfp)
{
err = set_error (GPG_ERR_ASS_GENERAL, "error setting up a data stream");
goto leave;
}
ctrl->server_local->inhibit_data_logging = 1;
ctrl->server_local->inhibit_data_logging_now = 0;
ctrl->server_local->inhibit_data_logging_count = 0;
err = ks_action_query (ctrl,
(flags & KS_GET_FLAG_ROOTDSE)? NULL : "ldap:///",
flags, filter, opt_attr, outfp);
leave:
es_fclose (outfp);
xfree (opt_attr);
ctrl->server_local->inhibit_data_logging = 0;
return leave_cmd (ctx, err);
}
static const char hlp_loadswdb[] =
"LOADSWDB [--force]\n"
@ -2973,6 +2973,7 @@ register_commands (assuan_context_t ctx)
{ "KS_GET", cmd_ks_get, hlp_ks_get },
{ "KS_FETCH", cmd_ks_fetch, hlp_ks_fetch },
{ "KS_PUT", cmd_ks_put, hlp_ks_put },
{ "AD_QUERY", cmd_ad_query, hlp_ad_query },
{ "GETINFO", cmd_getinfo, hlp_getinfo },
{ "LOADSWDB", cmd_loadswdb, hlp_loadswdb },
{ "KILLDIRMNGR",cmd_killdirmngr,hlp_killdirmngr },