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![NIIBE Yutaka](/assets/img/avatar_default.png)
* configure.ac (AC_CHECK_HEADERS): Remove string.h and getopt.h. * dirmngr/ks-engine-ldap.c: Remove including getopt.h. * tools/make-dns-cert.c: Likewise. -- Checking string.h is supported by AC_HEADER_STDC. Use of getopt.h is only needed for getopt_long of GNU extention. Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
2193 lines
56 KiB
C
2193 lines
56 KiB
C
/* ks-engine-ldap.c - talk to a LDAP keyserver
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* Copyright (C) 2001, 2002, 2004, 2005, 2006
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* 2007 Free Software Foundation, Inc.
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* Copyright (C) 2015, 2020 g10 Code GmbH
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*
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* This file is part of GnuPG.
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*
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* GnuPG is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* GnuPG is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <https://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <stdio.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <npth.h>
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#include "dirmngr.h"
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#include "misc.h"
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#include "../common/userids.h"
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#include "../common/mbox-util.h"
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#include "ks-engine.h"
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#include "ldap-misc.h"
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#include "ldap-parse-uri.h"
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#include "ldapserver.h"
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/* Flags with infos from the connected server. */
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#define SERVERINFO_REALLDAP 1 /* This is not the PGP keyserver. */
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#define SERVERINFO_PGPKEYV2 2 /* Needs "pgpeyV2" instead of "pgpKey" */
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#define SERVERINFO_SCHEMAV2 4 /* Version 2 of the Schema. */
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#define SERVERINFO_NTDS 8 /* Server is an Active Directory. */
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#ifndef HAVE_TIMEGM
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time_t timegm(struct tm *tm);
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#endif
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static time_t
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ldap2epochtime (const char *timestr)
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{
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struct tm pgptime;
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time_t answer;
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memset (&pgptime, 0, sizeof(pgptime));
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/* YYYYMMDDHHmmssZ */
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sscanf (timestr, "%4d%2d%2d%2d%2d%2d",
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&pgptime.tm_year,
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&pgptime.tm_mon,
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&pgptime.tm_mday,
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&pgptime.tm_hour,
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&pgptime.tm_min,
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&pgptime.tm_sec);
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pgptime.tm_year -= 1900;
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pgptime.tm_isdst = -1;
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pgptime.tm_mon--;
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/* mktime() takes the timezone into account, so we use timegm() */
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answer = timegm (&pgptime);
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return answer;
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}
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/* Caller must free the result. */
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static char *
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tm2ldaptime (struct tm *tm)
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{
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struct tm tmp = *tm;
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char buf[16];
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/* YYYYMMDDHHmmssZ */
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tmp.tm_year += 1900;
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tmp.tm_mon ++;
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snprintf (buf, sizeof buf, "%04d%02d%02d%02d%02d%02dZ",
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tmp.tm_year,
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tmp.tm_mon,
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tmp.tm_mday,
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tmp.tm_hour,
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tmp.tm_min,
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tmp.tm_sec);
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return xstrdup (buf);
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}
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#if 0
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/* Caller must free */
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static char *
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epoch2ldaptime (time_t stamp)
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{
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struct tm tm;
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if (gmtime_r (&stamp, &tm))
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return tm2ldaptime (&tm);
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else
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return xstrdup ("INVALID TIME");
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}
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#endif
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static void
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my_ldap_value_free (char **vals)
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{
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if (vals)
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ldap_value_free (vals);
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}
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/* Print a help output for the schemata supported by this module. */
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gpg_error_t
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ks_ldap_help (ctrl_t ctrl, parsed_uri_t uri)
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{
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const char data[] =
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"Handler for LDAP URLs:\n"
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" ldap://HOST:PORT/[BASEDN]????[bindname=BINDNAME,password=PASSWORD]\n"
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"\n"
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"Note: basedn, bindname and password need to be percent escaped. In\n"
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"particular, spaces need to be replaced with %20 and commas with %2c.\n"
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"Thus bindname will typically be of the form:\n"
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"\n"
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" uid=user%2cou=PGP%20Users%2cdc=EXAMPLE%2cdc=ORG\n"
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"\n"
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"The ldaps:// and ldapi:// schemes are also supported. If ldaps is used\n"
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"then the server's certificate will be checked. If it is not valid, any\n"
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"operation will be aborted. Note that ldaps means LDAP with STARTTLS\n"
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"\n"
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"As an alternative to an URL a string in this form may be used:\n"
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"\n"
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" HOST:PORT:BINDNAME:PASSWORD:BASEDN:FLAGS:\n"
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"\n"
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"The use of the percent sign or a colon in one of the string values is\n"
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"currently not supported.\n"
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"\n"
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"Supported methods: search, get, put\n";
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gpg_error_t err;
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if(!uri)
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err = ks_print_help (ctrl, " ldap");
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else if (uri->is_ldap || uri->opaque)
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err = ks_print_help (ctrl, data);
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else
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err = 0;
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return err;
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}
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/* Convert a keyspec to a filter. Return an error if the keyspec is
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bad or is not supported. The filter is escaped and returned in
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*filter. It is the caller's responsibility to free *filter.
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*filter is only set if this function returns success (i.e., 0). */
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static gpg_error_t
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keyspec_to_ldap_filter (const char *keyspec, char **filter, int only_exact,
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unsigned int serverinfo)
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{
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/* Remove search type indicator and adjust PATTERN accordingly.
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Note: don't include a preceding 0x when searching by keyid. */
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/* XXX: Should we include disabled / revoke options? */
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KEYDB_SEARCH_DESC desc;
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char *f = NULL;
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char *freeme = NULL;
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char *p;
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gpg_error_t err = classify_user_id (keyspec, &desc, 1);
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if (err)
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return err;
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switch (desc.mode)
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{
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case KEYDB_SEARCH_MODE_EXACT:
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f = xasprintf ("(pgpUserID=%s)",
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(freeme = ldap_escape_filter (desc.u.name)));
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break;
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case KEYDB_SEARCH_MODE_SUBSTR:
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if (! only_exact)
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f = xasprintf ("(pgpUserID=*%s*)",
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(freeme = ldap_escape_filter (desc.u.name)));
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break;
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case KEYDB_SEARCH_MODE_MAIL:
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freeme = ldap_escape_filter (desc.u.name);
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if (!freeme)
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break;
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if (*freeme == '<' && freeme[1] && freeme[2])
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{
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/* Strip angle brackets. Note that it is does not
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* matter whether we work on the plan or LDAP escaped
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* version of the mailbox. */
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p = freeme + 1;
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if (p[strlen(p)-1] == '>')
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p[strlen(p)-1] = 0;
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}
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else
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p = freeme;
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if ((serverinfo & SERVERINFO_SCHEMAV2))
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f = xasprintf ("(&(gpgMailbox=%s)(!(|(pgpRevoked=1)(pgpDisabled=1))))",
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p);
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else if (!only_exact)
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f = xasprintf ("(pgpUserID=*<%s>*)", p);
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break;
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case KEYDB_SEARCH_MODE_MAILSUB:
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if (! only_exact)
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f = xasprintf ("(pgpUserID=*<*%s*>*)",
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(freeme = ldap_escape_filter (desc.u.name)));
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break;
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case KEYDB_SEARCH_MODE_MAILEND:
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if (! only_exact)
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f = xasprintf ("(pgpUserID=*<*%s>*)",
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(freeme = ldap_escape_filter (desc.u.name)));
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break;
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case KEYDB_SEARCH_MODE_SHORT_KID:
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f = xasprintf ("(pgpKeyID=%08lX)", (ulong) desc.u.kid[1]);
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break;
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case KEYDB_SEARCH_MODE_LONG_KID:
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f = xasprintf ("(pgpCertID=%08lX%08lX)",
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(ulong) desc.u.kid[0], (ulong) desc.u.kid[1]);
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break;
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case KEYDB_SEARCH_MODE_FPR:
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if ((serverinfo & SERVERINFO_SCHEMAV2))
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{
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freeme = bin2hex (desc.u.fpr, desc.fprlen, NULL);
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if (!freeme)
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return gpg_error_from_syserror ();
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f = xasprintf ("(|(gpgFingerprint=%s)(gpgSubFingerprint=%s))",
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freeme, freeme);
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/* FIXME: For an exact search and in case of a match on
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* gpgSubFingerprint we need to check that there is only one
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* matching value. */
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}
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break;
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case KEYDB_SEARCH_MODE_ISSUER:
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case KEYDB_SEARCH_MODE_ISSUER_SN:
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case KEYDB_SEARCH_MODE_SN:
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case KEYDB_SEARCH_MODE_SUBJECT:
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case KEYDB_SEARCH_MODE_KEYGRIP:
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case KEYDB_SEARCH_MODE_WORDS:
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case KEYDB_SEARCH_MODE_FIRST:
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case KEYDB_SEARCH_MODE_NEXT:
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default:
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break;
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}
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xfree (freeme);
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if (! f)
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{
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log_error ("Unsupported search mode.\n");
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return gpg_error (GPG_ERR_NOT_SUPPORTED);
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}
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*filter = f;
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return 0;
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}
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/* Connect to an LDAP server and interrogate it.
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- uri describes the server to connect to and various options
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including whether to use TLS and the username and password (see
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ldap_parse_uri for a description of the various fields).
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This function returns:
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- The ldap connection handle in *LDAP_CONNP.
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- The base DN for the PGP key space by querying the
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pgpBaseKeySpaceDN attribute (This is normally
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'ou=PGP Keys,dc=EXAMPLE,dc=ORG').
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- The attribute to lookup to find the pgp key. This is either
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'pgpKey' or 'pgpKeyV2'.
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- Whether this is a real ldap server. (It's unclear what this
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exactly means.)
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The values are returned in the passed variables. If you pass NULL,
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then the value won't be returned. It is the caller's
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responsibility to release *LDAP_CONNP with ldap_unbind and xfree
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*BASEDNP.
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If this function successfully interrogated the server, it returns
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0. If there was an LDAP error, it returns the LDAP error code. If
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an error occurred, *basednp, etc., are undefined (and don't need to
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be freed.)
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R_SERVERINFO receives information about the server.
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If no LDAP error occurred, you still need to check that *basednp is
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valid. If it is NULL, then the server does not appear to be an
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OpenPGP Keyserver. */
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static gpg_error_t
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my_ldap_connect (parsed_uri_t uri, LDAP **ldap_connp,
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char **r_basedn, char **r_host, int *r_use_tls,
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unsigned int *r_serverinfo)
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{
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gpg_error_t err = 0;
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int lerr;
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ldap_server_t server = NULL;
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LDAP *ldap_conn = NULL;
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char *basedn = NULL;
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char *host = NULL; /* Host to use. */
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int port; /* Port to use. */
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int use_tls; /* 1 = starttls, 2 = ldap-over-tls */
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int use_ntds; /* Use Active Directory authentication. */
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const char *bindname;
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const char *password;
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const char *basedn_arg;
|
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#ifndef HAVE_W32_SYSTEM
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char *tmpstr;
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#endif
|
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|
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if (r_basedn)
|
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*r_basedn = NULL;
|
||
if (r_host)
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*r_host = NULL;
|
||
if (r_use_tls)
|
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*r_use_tls = 0;
|
||
*r_serverinfo = 0;
|
||
|
||
if (uri->opaque)
|
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{
|
||
server = ldapserver_parse_one (uri->path, NULL, 0);
|
||
if (!server)
|
||
return gpg_error (GPG_ERR_LDAP_OTHER);
|
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host = server->host;
|
||
port = server->port;
|
||
bindname = server->user;
|
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password = bindname? server->pass : NULL;
|
||
basedn_arg = server->base;
|
||
use_tls = server->starttls? 1 : server->ldap_over_tls? 2 : 0;
|
||
use_ntds = server->ntds;
|
||
}
|
||
else
|
||
{
|
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host = uri->host;
|
||
port = uri->port;
|
||
bindname = uri->auth;
|
||
password = bindname? uri_query_value (uri, "password") : NULL;
|
||
basedn_arg = uri->path;
|
||
use_tls = uri->use_tls ? 1 : 0;
|
||
use_ntds = uri->ad_current;
|
||
}
|
||
|
||
if (!port)
|
||
port = use_tls == 2? 636 : 389;
|
||
|
||
|
||
if (host)
|
||
{
|
||
host = xtrystrdup (host);
|
||
if (!host)
|
||
{
|
||
err = gpg_error_from_syserror ();
|
||
goto out;
|
||
}
|
||
}
|
||
|
||
if (opt.verbose)
|
||
log_info ("ldap connect to '%s:%d:%s:%s:%s:%s%s'\n",
|
||
host, port,
|
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basedn_arg ? basedn_arg : "",
|
||
bindname ? bindname : "",
|
||
password ? "*****" : "",
|
||
use_tls == 1? "starttls" : use_tls == 2? "ldaptls" : "plain",
|
||
use_ntds ? ",ntds":"");
|
||
|
||
|
||
/* If the uri specifies a secure connection and we don't support
|
||
TLS, then fail; don't silently revert to an insecure
|
||
connection. */
|
||
if (use_tls)
|
||
{
|
||
#ifndef HAVE_LDAP_START_TLS_S
|
||
log_error ("ldap: can't connect to the server: no TLS support.");
|
||
err = GPG_ERR_LDAP_NOT_SUPPORTED;
|
||
goto out;
|
||
#endif
|
||
}
|
||
|
||
|
||
#ifdef HAVE_W32_SYSTEM
|
||
/* Note that host==NULL uses the default domain controller. */
|
||
npth_unprotect ();
|
||
ldap_conn = ldap_sslinit (host, port, (use_tls == 2));
|
||
npth_protect ();
|
||
if (!ldap_conn)
|
||
{
|
||
lerr = LdapGetLastError ();
|
||
err = ldap_err_to_gpg_err (lerr);
|
||
log_error ("error initializing LDAP '%s:%d': %s\n",
|
||
host, port, ldap_err2string (lerr));
|
||
goto out;
|
||
}
|
||
#else /* Unix */
|
||
tmpstr = xtryasprintf ("%s://%s:%d",
|
||
use_tls == 2? "ldaps" : "ldap",
|
||
host, port);
|
||
if (!tmpstr)
|
||
{
|
||
err = gpg_error_from_syserror ();
|
||
goto out;
|
||
}
|
||
npth_unprotect ();
|
||
lerr = ldap_initialize (&ldap_conn, tmpstr);
|
||
npth_protect ();
|
||
if (lerr != LDAP_SUCCESS || !ldap_conn)
|
||
{
|
||
err = ldap_err_to_gpg_err (lerr);
|
||
log_error ("error initializing LDAP '%s': %s\n",
|
||
tmpstr, ldap_err2string (lerr));
|
||
xfree (tmpstr);
|
||
goto out;
|
||
}
|
||
xfree (tmpstr);
|
||
#endif /* Unix */
|
||
|
||
#ifdef HAVE_LDAP_SET_OPTION
|
||
{
|
||
int ver = LDAP_VERSION3;
|
||
|
||
lerr = ldap_set_option (ldap_conn, LDAP_OPT_PROTOCOL_VERSION, &ver);
|
||
if (lerr != LDAP_SUCCESS)
|
||
{
|
||
log_error ("ks-ldap: unable to go to LDAP 3: %s\n",
|
||
ldap_err2string (lerr));
|
||
err = ldap_err_to_gpg_err (lerr);
|
||
goto out;
|
||
}
|
||
}
|
||
if (opt.ldaptimeout)
|
||
{
|
||
int ver = opt.ldaptimeout;
|
||
|
||
lerr = ldap_set_option (ldap_conn, LDAP_OPT_TIMELIMIT, &ver);
|
||
if (lerr != LDAP_SUCCESS)
|
||
{
|
||
log_error ("ks-ldap: unable to set LDAP timelimit to %us: %s\n",
|
||
opt.ldaptimeout, ldap_err2string (lerr));
|
||
err = ldap_err_to_gpg_err (lerr);
|
||
goto out;
|
||
}
|
||
if (opt.verbose)
|
||
log_info ("ldap timeout set to %us\n", opt.ldaptimeout);
|
||
}
|
||
#endif
|
||
|
||
|
||
#ifdef HAVE_LDAP_START_TLS_S
|
||
if (use_tls == 1)
|
||
{
|
||
#ifndef HAVE_W32_SYSTEM
|
||
int check_cert = LDAP_OPT_X_TLS_HARD; /* LDAP_OPT_X_TLS_NEVER */
|
||
|
||
lerr = ldap_set_option (ldap_conn,
|
||
LDAP_OPT_X_TLS_REQUIRE_CERT, &check_cert);
|
||
if (lerr)
|
||
{
|
||
log_error ("ldap: error setting an TLS option: %s\n",
|
||
ldap_err2string (lerr));
|
||
err = ldap_err_to_gpg_err (lerr);
|
||
goto out;
|
||
}
|
||
#else
|
||
/* On Windows, the certificates are checked by default. If the
|
||
option to disable checking mentioned above is ever
|
||
implemented, the way to do that on Windows is to install a
|
||
callback routine using ldap_set_option (..,
|
||
LDAP_OPT_SERVER_CERTIFICATE, ..); */
|
||
#endif
|
||
|
||
npth_unprotect ();
|
||
lerr = ldap_start_tls_s (ldap_conn,
|
||
#ifdef HAVE_W32_SYSTEM
|
||
/* ServerReturnValue, result */
|
||
NULL, NULL,
|
||
#endif
|
||
/* ServerControls, ClientControls */
|
||
NULL, NULL);
|
||
npth_protect ();
|
||
if (lerr)
|
||
{
|
||
log_error ("ldap: error switching to STARTTLS mode: %s\n",
|
||
ldap_err2string (lerr));
|
||
err = ldap_err_to_gpg_err (lerr);
|
||
goto out;
|
||
}
|
||
}
|
||
#endif
|
||
|
||
if (use_ntds)
|
||
{
|
||
#ifdef HAVE_W32_SYSTEM
|
||
npth_unprotect ();
|
||
lerr = ldap_bind_s (ldap_conn, NULL, NULL, LDAP_AUTH_NEGOTIATE);
|
||
npth_protect ();
|
||
if (lerr != LDAP_SUCCESS)
|
||
{
|
||
log_error ("error binding to LDAP via AD: %s\n",
|
||
ldap_err2string (lerr));
|
||
err = ldap_err_to_gpg_err (lerr);
|
||
goto out;
|
||
}
|
||
#else
|
||
log_error ("ldap: no Active Directory support but 'ntds' requested\n");
|
||
err = gpg_error (GPG_ERR_NOT_SUPPORTED);
|
||
goto out;
|
||
#endif
|
||
}
|
||
else if (bindname)
|
||
{
|
||
npth_unprotect ();
|
||
lerr = ldap_simple_bind_s (ldap_conn, bindname, password);
|
||
npth_protect ();
|
||
if (lerr != LDAP_SUCCESS)
|
||
{
|
||
log_error ("error binding to LDAP: %s\n", ldap_err2string (lerr));
|
||
err = ldap_err_to_gpg_err (lerr);
|
||
goto out;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* By default we don't bind as there is usually no need to. */
|
||
}
|
||
|
||
if (basedn_arg && *basedn_arg)
|
||
{
|
||
/* User specified base DN. In this case we know the server is a
|
||
* real LDAP server. */
|
||
basedn = xtrystrdup (basedn_arg);
|
||
if (!basedn)
|
||
{
|
||
err = gpg_error_from_syserror ();
|
||
goto out;
|
||
}
|
||
*r_serverinfo |= SERVERINFO_REALLDAP;
|
||
}
|
||
else
|
||
{ /* Look for namingContexts. */
|
||
LDAPMessage *res = NULL;
|
||
char *attr[] = { "namingContexts", NULL };
|
||
|
||
npth_unprotect ();
|
||
lerr = ldap_search_s (ldap_conn, "", LDAP_SCOPE_BASE,
|
||
"(objectClass=*)", attr, 0, &res);
|
||
npth_protect ();
|
||
|
||
if (lerr == LDAP_SUCCESS)
|
||
{
|
||
char **context;
|
||
|
||
npth_unprotect ();
|
||
context = ldap_get_values (ldap_conn, res, "namingContexts");
|
||
npth_protect ();
|
||
if (context)
|
||
{
|
||
/* We found some, so try each namingContext as the
|
||
* search base and look for pgpBaseKeySpaceDN. Because
|
||
* we found this, we know we're talking to a regular-ish
|
||
* LDAP server and not an LDAP keyserver. */
|
||
int i;
|
||
char *attr2[] =
|
||
{ "pgpBaseKeySpaceDN", "pgpVersion", "pgpSoftware", NULL };
|
||
|
||
*r_serverinfo |= SERVERINFO_REALLDAP;
|
||
|
||
for (i = 0; context[i] && !basedn; i++)
|
||
{
|
||
char **vals;
|
||
LDAPMessage *si_res;
|
||
int is_gnupg = 0;
|
||
|
||
{
|
||
char *object = xasprintf ("cn=pgpServerInfo,%s",
|
||
context[i]);
|
||
npth_unprotect ();
|
||
lerr = ldap_search_s (ldap_conn, object, LDAP_SCOPE_BASE,
|
||
"(objectClass=*)", attr2, 0, &si_res);
|
||
npth_protect ();
|
||
xfree (object);
|
||
}
|
||
|
||
if (lerr == LDAP_SUCCESS)
|
||
{
|
||
vals = ldap_get_values (ldap_conn, si_res,
|
||
"pgpBaseKeySpaceDN");
|
||
if (vals && vals[0])
|
||
{
|
||
basedn = xtrystrdup (vals[0]);
|
||
}
|
||
my_ldap_value_free (vals);
|
||
|
||
vals = ldap_get_values (ldap_conn, si_res,
|
||
"pgpSoftware");
|
||
if (vals && vals[0])
|
||
{
|
||
if (opt.debug)
|
||
log_debug ("Server: \t%s\n", vals[0]);
|
||
if (!ascii_strcasecmp (vals[0], "GnuPG"))
|
||
is_gnupg = 1;
|
||
}
|
||
my_ldap_value_free (vals);
|
||
|
||
vals = ldap_get_values (ldap_conn, si_res,
|
||
"pgpVersion");
|
||
if (vals && vals[0])
|
||
{
|
||
if (opt.debug)
|
||
log_debug ("Version:\t%s\n", vals[0]);
|
||
if (is_gnupg)
|
||
{
|
||
const char *fields[2];
|
||
int nfields;
|
||
nfields = split_fields (vals[0],
|
||
fields, DIM(fields));
|
||
if (nfields > 0 && atoi(fields[0]) > 1)
|
||
*r_serverinfo |= SERVERINFO_SCHEMAV2;
|
||
if (nfields > 1
|
||
&& !ascii_strcasecmp (fields[1], "ntds"))
|
||
*r_serverinfo |= SERVERINFO_NTDS;
|
||
}
|
||
}
|
||
my_ldap_value_free (vals);
|
||
}
|
||
|
||
/* From man ldap_search_s: "res parameter of
|
||
ldap_search_ext_s() and ldap_search_s() should be
|
||
freed with ldap_msgfree() regardless of return
|
||
value of these functions. */
|
||
ldap_msgfree (si_res);
|
||
}
|
||
|
||
ldap_value_free (context);
|
||
}
|
||
}
|
||
else /* ldap_search failed. */
|
||
{
|
||
/* We don't have an answer yet, which means the server might
|
||
be a PGP.com keyserver. */
|
||
char **vals;
|
||
LDAPMessage *si_res = NULL;
|
||
|
||
char *attr2[] = { "pgpBaseKeySpaceDN", "version", "software", NULL };
|
||
|
||
npth_unprotect ();
|
||
lerr = ldap_search_s (ldap_conn, "cn=pgpServerInfo", LDAP_SCOPE_BASE,
|
||
"(objectClass=*)", attr2, 0, &si_res);
|
||
npth_protect ();
|
||
if (lerr == LDAP_SUCCESS)
|
||
{
|
||
/* For the PGP LDAP keyserver, this is always
|
||
* "OU=ACTIVE,O=PGP KEYSPACE,C=US", but it might not be
|
||
* in the future. */
|
||
|
||
vals = ldap_get_values (ldap_conn, si_res, "baseKeySpaceDN");
|
||
if (vals && vals[0])
|
||
{
|
||
basedn = xtrystrdup (vals[0]);
|
||
}
|
||
my_ldap_value_free (vals);
|
||
|
||
vals = ldap_get_values (ldap_conn, si_res, "software");
|
||
if (vals && vals[0])
|
||
{
|
||
if (opt.debug)
|
||
log_debug ("ks-ldap: PGP Server: \t%s\n", vals[0]);
|
||
}
|
||
my_ldap_value_free (vals);
|
||
|
||
vals = ldap_get_values (ldap_conn, si_res, "version");
|
||
if (vals && vals[0])
|
||
{
|
||
if (opt.debug)
|
||
log_debug ("ks-ldap: PGP Server Version:\t%s\n", vals[0]);
|
||
|
||
/* If the version is high enough, use the new
|
||
pgpKeyV2 attribute. This design is iffy at best,
|
||
but it matches how PGP does it. I figure the NAI
|
||
folks assumed that there would never be an LDAP
|
||
keyserver vendor with a different numbering
|
||
scheme. */
|
||
if (atoi (vals[0]) > 1)
|
||
*r_serverinfo |= SERVERINFO_PGPKEYV2;
|
||
|
||
}
|
||
my_ldap_value_free (vals);
|
||
}
|
||
|
||
ldap_msgfree (si_res);
|
||
}
|
||
|
||
/* From man ldap_search_s: "res parameter of ldap_search_ext_s()
|
||
and ldap_search_s() should be freed with ldap_msgfree()
|
||
regardless of return value of these functions. */
|
||
ldap_msgfree (res);
|
||
}
|
||
|
||
out:
|
||
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 ("basedn: %s\n", basedn);
|
||
log_debug ("pgpkeyattr: %s\n",
|
||
(*r_serverinfo & SERVERINFO_PGPKEYV2)? "pgpKeyV2":"pgpKey");
|
||
}
|
||
|
||
ldapserver_list_free (server);
|
||
|
||
if (err)
|
||
{
|
||
xfree (basedn);
|
||
if (ldap_conn)
|
||
ldap_unbind (ldap_conn);
|
||
}
|
||
else
|
||
{
|
||
if (r_basedn)
|
||
*r_basedn = basedn;
|
||
else
|
||
xfree (basedn);
|
||
if (r_host)
|
||
*r_host = host;
|
||
else
|
||
xfree (host);
|
||
|
||
*ldap_connp = ldap_conn;
|
||
}
|
||
|
||
return err;
|
||
}
|
||
|
||
/* Extract keys from an LDAP reply and write them out to the output
|
||
stream OUTPUT in a format GnuPG can import (either the OpenPGP
|
||
binary format or armored format). */
|
||
static void
|
||
extract_keys (estream_t output,
|
||
LDAP *ldap_conn, const char *certid, LDAPMessage *message)
|
||
{
|
||
char **vals;
|
||
|
||
es_fprintf (output, "INFO %s BEGIN\n", certid);
|
||
|
||
/* Note: ldap_get_values returns a NULL terminated array of
|
||
strings. */
|
||
|
||
vals = ldap_get_values (ldap_conn, message, "gpgfingerprint");
|
||
if (vals && vals[0] && vals[0][0])
|
||
es_fprintf (output, "pub:%s:", vals[0]);
|
||
else
|
||
es_fprintf (output, "pub:%s:", certid);
|
||
my_ldap_value_free (vals);
|
||
|
||
vals = ldap_get_values (ldap_conn, message, "pgpkeytype");
|
||
if (vals && vals[0])
|
||
{
|
||
if (strcmp (vals[0], "RSA") == 0)
|
||
es_fprintf (output, "1");
|
||
else if (strcmp (vals[0],"DSS/DH") == 0)
|
||
es_fprintf (output, "17");
|
||
}
|
||
my_ldap_value_free (vals);
|
||
|
||
es_fprintf (output, ":");
|
||
|
||
vals = ldap_get_values (ldap_conn, message, "pgpkeysize");
|
||
if (vals && vals[0])
|
||
{
|
||
int v = atoi (vals[0]);
|
||
if (v > 0)
|
||
es_fprintf (output, "%d", v);
|
||
}
|
||
my_ldap_value_free (vals);
|
||
|
||
es_fprintf (output, ":");
|
||
|
||
vals = ldap_get_values (ldap_conn, message, "pgpkeycreatetime");
|
||
if (vals && vals[0])
|
||
{
|
||
if (strlen (vals[0]) == 15)
|
||
es_fprintf (output, "%u", (unsigned int) ldap2epochtime (vals[0]));
|
||
}
|
||
my_ldap_value_free (vals);
|
||
|
||
es_fprintf (output, ":");
|
||
|
||
vals = ldap_get_values (ldap_conn, message, "pgpkeyexpiretime");
|
||
if (vals && vals[0])
|
||
{
|
||
if (strlen (vals[0]) == 15)
|
||
es_fprintf (output, "%u", (unsigned int) ldap2epochtime (vals[0]));
|
||
}
|
||
my_ldap_value_free (vals);
|
||
|
||
es_fprintf (output, ":");
|
||
|
||
vals = ldap_get_values (ldap_conn, message, "pgprevoked");
|
||
if (vals && vals[0])
|
||
{
|
||
if (atoi (vals[0]) == 1)
|
||
es_fprintf (output, "r");
|
||
}
|
||
my_ldap_value_free (vals);
|
||
|
||
es_fprintf (output, "\n");
|
||
|
||
vals = ldap_get_values (ldap_conn, message, "pgpuserid");
|
||
if (vals && vals[0])
|
||
{
|
||
int i;
|
||
for (i = 0; vals[i]; i++)
|
||
es_fprintf (output, "uid:%s\n", vals[i]);
|
||
}
|
||
my_ldap_value_free (vals);
|
||
|
||
es_fprintf (output, "INFO %s END\n", certid);
|
||
}
|
||
|
||
/* 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. */
|
||
gpg_error_t
|
||
ks_ldap_get (ctrl_t ctrl, parsed_uri_t uri, const char *keyspec,
|
||
estream_t *r_fp)
|
||
{
|
||
gpg_error_t err = 0;
|
||
int ldap_err;
|
||
unsigned int serverinfo;
|
||
char *host = NULL;
|
||
int use_tls;
|
||
char *filter = NULL;
|
||
LDAP *ldap_conn = NULL;
|
||
char *basedn = NULL;
|
||
estream_t fp = NULL;
|
||
LDAPMessage *message = NULL;
|
||
|
||
(void) ctrl;
|
||
|
||
if (dirmngr_use_tor ())
|
||
{
|
||
/* For now we do not support LDAP over Tor. */
|
||
log_error (_("LDAP access not possible due to Tor mode\n"));
|
||
return gpg_error (GPG_ERR_NOT_SUPPORTED);
|
||
}
|
||
|
||
/* Make sure we are talking to an OpenPGP LDAP server. */
|
||
err = my_ldap_connect (uri, &ldap_conn,
|
||
&basedn, &host, &use_tls, &serverinfo);
|
||
if (err || !basedn)
|
||
{
|
||
if (!err)
|
||
err = gpg_error (GPG_ERR_GENERAL);
|
||
goto out;
|
||
}
|
||
|
||
/* Now that we have information about the server we can construct a
|
||
* query best suited for the capabilities of the server. */
|
||
err = keyspec_to_ldap_filter (keyspec, &filter, 1, serverinfo);
|
||
if (err)
|
||
goto out;
|
||
|
||
if (opt.debug)
|
||
log_debug ("ks-ldap: using filter: %s\n", filter);
|
||
|
||
{
|
||
/* The ordering is significant. Specifically, "pgpcertid" needs
|
||
to be the second item in the list, since everything after it
|
||
may be discarded if we aren't in verbose mode. */
|
||
char *attrs[] =
|
||
{
|
||
"dummy",
|
||
"pgpcertid", "pgpuserid", "pgpkeyid", "pgprevoked", "pgpdisabled",
|
||
"pgpkeycreatetime", "modifytimestamp", "pgpkeysize", "pgpkeytype",
|
||
"gpgfingerprint",
|
||
NULL
|
||
};
|
||
/* 1 if we want just attribute types; 0 if we want both attribute
|
||
* types and values. */
|
||
int attrsonly = 0;
|
||
int count;
|
||
|
||
/* Replace "dummy". */
|
||
attrs[0] = (serverinfo & SERVERINFO_PGPKEYV2)? "pgpKeyV2" : "pgpKey";
|
||
|
||
npth_unprotect ();
|
||
ldap_err = ldap_search_s (ldap_conn, basedn, LDAP_SCOPE_SUBTREE,
|
||
filter, attrs, attrsonly, &message);
|
||
npth_protect ();
|
||
if (ldap_err)
|
||
{
|
||
err = ldap_err_to_gpg_err (ldap_err);
|
||
|
||
log_error ("ks-ldap: LDAP search error: %s\n",
|
||
ldap_err2string (ldap_err));
|
||
goto out;
|
||
}
|
||
|
||
count = ldap_count_entries (ldap_conn, message);
|
||
if (count < 1)
|
||
{
|
||
log_info ("ks-ldap: key %s not found on keyserver\n", keyspec);
|
||
|
||
if (count == -1)
|
||
err = ldap_to_gpg_err (ldap_conn);
|
||
else
|
||
err = gpg_error (GPG_ERR_NO_DATA);
|
||
|
||
goto out;
|
||
}
|
||
|
||
{
|
||
/* There may be more than one unique result for a given keyID,
|
||
so we should fetch them all (test this by fetching short key
|
||
id 0xDEADBEEF). */
|
||
|
||
/* The set of entries that we've seen. */
|
||
strlist_t seen = NULL;
|
||
LDAPMessage *each;
|
||
int anykey = 0;
|
||
|
||
for (npth_unprotect (),
|
||
each = ldap_first_entry (ldap_conn, message),
|
||
npth_protect ();
|
||
each;
|
||
npth_unprotect (),
|
||
each = ldap_next_entry (ldap_conn, each),
|
||
npth_protect ())
|
||
{
|
||
char **vals;
|
||
char **certid;
|
||
|
||
/* Use the long keyid to remove duplicates. The LDAP
|
||
server returns the same keyid more than once if there
|
||
are multiple user IDs on the key. Note that this does
|
||
NOT mean that a keyid that exists multiple times on the
|
||
keyserver will not be fetched. It means that each KEY,
|
||
no matter how many user IDs share its keyid, will be
|
||
fetched only once. If a keyid that belongs to more
|
||
than one key is fetched, the server quite properly
|
||
responds with all matching keys. -ds */
|
||
|
||
certid = ldap_get_values (ldap_conn, each, "pgpcertid");
|
||
if (certid && certid[0])
|
||
{
|
||
if (! strlist_find (seen, certid[0]))
|
||
{
|
||
/* It's not a duplicate, add it */
|
||
|
||
add_to_strlist (&seen, certid[0]);
|
||
|
||
if (! fp)
|
||
fp = es_fopenmem(0, "rw");
|
||
|
||
extract_keys (fp, ldap_conn, certid[0], each);
|
||
|
||
vals = ldap_get_values (ldap_conn, each, attrs[0]);
|
||
if (! vals)
|
||
{
|
||
err = ldap_to_gpg_err (ldap_conn);
|
||
log_error("ks-ldap: unable to retrieve key %s "
|
||
"from keyserver\n", certid[0]);
|
||
goto out;
|
||
}
|
||
else
|
||
{
|
||
/* We should strip the new lines. */
|
||
es_fprintf (fp, "KEY 0x%s BEGIN\n", certid[0]);
|
||
es_fputs (vals[0], fp);
|
||
es_fprintf (fp, "\nKEY 0x%s END\n", certid[0]);
|
||
|
||
ldap_value_free (vals);
|
||
anykey = 1;
|
||
}
|
||
}
|
||
}
|
||
|
||
my_ldap_value_free (certid);
|
||
}
|
||
|
||
free_strlist (seen);
|
||
|
||
if (! fp)
|
||
err = gpg_error (GPG_ERR_NO_DATA);
|
||
|
||
if (!err && anykey)
|
||
err = dirmngr_status_printf (ctrl, "SOURCE", "%s://%s",
|
||
use_tls? "ldaps" : "ldap",
|
||
host? host:"");
|
||
}
|
||
}
|
||
|
||
out:
|
||
if (message)
|
||
ldap_msgfree (message);
|
||
|
||
if (err)
|
||
{
|
||
if (fp)
|
||
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;
|
||
}
|
||
|
||
|
||
/* Search the keyserver identified by URI for keys matching PATTERN.
|
||
On success R_FP has an open stream to read the data. */
|
||
gpg_error_t
|
||
ks_ldap_search (ctrl_t ctrl, parsed_uri_t uri, const char *pattern,
|
||
estream_t *r_fp)
|
||
{
|
||
gpg_error_t err;
|
||
int ldap_err;
|
||
unsigned int serverinfo;
|
||
char *filter = NULL;
|
||
LDAP *ldap_conn = NULL;
|
||
char *basedn = NULL;
|
||
estream_t fp = NULL;
|
||
|
||
(void) ctrl;
|
||
|
||
if (dirmngr_use_tor ())
|
||
{
|
||
/* For now we do not support LDAP over Tor. */
|
||
log_error (_("LDAP access not possible due to Tor mode\n"));
|
||
return gpg_error (GPG_ERR_NOT_SUPPORTED);
|
||
}
|
||
|
||
/* Make sure we are talking to an OpenPGP LDAP server. */
|
||
err = my_ldap_connect (uri, &ldap_conn, &basedn, NULL, NULL, &serverinfo);
|
||
if (err || !basedn)
|
||
{
|
||
if (!err)
|
||
err = GPG_ERR_GENERAL;
|
||
goto out;
|
||
}
|
||
|
||
/* Now that we have information about the server we can construct a
|
||
* query best suited for the capabilities of the server. */
|
||
err = keyspec_to_ldap_filter (pattern, &filter, 0, serverinfo);
|
||
if (err)
|
||
{
|
||
log_error ("Bad search pattern: '%s'\n", pattern);
|
||
goto out;
|
||
}
|
||
|
||
/* Even if we have no results, we want to return a stream. */
|
||
fp = es_fopenmem(0, "rw");
|
||
if (!fp)
|
||
{
|
||
err = gpg_error_from_syserror ();
|
||
goto out;
|
||
}
|
||
|
||
{
|
||
char **vals;
|
||
LDAPMessage *res, *each;
|
||
int count = 0;
|
||
strlist_t dupelist = NULL;
|
||
|
||
/* The maximum size of the search, including the optional stuff
|
||
and the trailing \0 */
|
||
char *attrs[] =
|
||
{
|
||
"pgpcertid", "pgpuserid", "pgprevoked", "pgpdisabled",
|
||
"pgpkeycreatetime", "pgpkeyexpiretime", "modifytimestamp",
|
||
"pgpkeysize", "pgpkeytype", "gpgfingerprint",
|
||
NULL
|
||
};
|
||
|
||
if (opt.debug)
|
||
log_debug ("SEARCH '%s' => '%s' BEGIN\n", pattern, filter);
|
||
|
||
npth_unprotect ();
|
||
ldap_err = ldap_search_s (ldap_conn, basedn,
|
||
LDAP_SCOPE_SUBTREE, filter, attrs, 0, &res);
|
||
npth_protect ();
|
||
|
||
xfree (filter);
|
||
filter = NULL;
|
||
|
||
if (ldap_err != LDAP_SUCCESS && ldap_err != LDAP_SIZELIMIT_EXCEEDED)
|
||
{
|
||
err = ldap_err_to_gpg_err (ldap_err);
|
||
|
||
log_error ("SEARCH %s FAILED %d\n", pattern, err);
|
||
log_error ("ks-ldap: LDAP search error: %s\n",
|
||
ldap_err2string (err));
|
||
goto out;
|
||
}
|
||
|
||
/* The LDAP server doesn't return a real count of unique keys, so we
|
||
can't use ldap_count_entries here. */
|
||
for (npth_unprotect (),
|
||
each = ldap_first_entry (ldap_conn, res),
|
||
npth_protect ();
|
||
each;
|
||
npth_unprotect (),
|
||
each = ldap_next_entry (ldap_conn, each),
|
||
npth_protect ())
|
||
{
|
||
char **certid = ldap_get_values (ldap_conn, each, "pgpcertid");
|
||
if (certid && certid[0] && ! strlist_find (dupelist, certid[0]))
|
||
{
|
||
add_to_strlist (&dupelist, certid[0]);
|
||
count++;
|
||
}
|
||
my_ldap_value_free (certid);
|
||
}
|
||
|
||
if (ldap_err == LDAP_SIZELIMIT_EXCEEDED)
|
||
{
|
||
if (count == 1)
|
||
log_error ("ks-ldap: search results exceeded server limit."
|
||
" First 1 result shown.\n");
|
||
else
|
||
log_error ("ks-ldap: search results exceeded server limit."
|
||
" First %d results shown.\n", count);
|
||
}
|
||
|
||
free_strlist (dupelist);
|
||
dupelist = NULL;
|
||
|
||
if (count < 1)
|
||
es_fputs ("info:1:0\n", fp);
|
||
else
|
||
{
|
||
es_fprintf (fp, "info:1:%d\n", count);
|
||
|
||
for (each = ldap_first_entry (ldap_conn, res);
|
||
each;
|
||
each = ldap_next_entry (ldap_conn, each))
|
||
{
|
||
char **certid;
|
||
LDAPMessage *uids;
|
||
|
||
certid = ldap_get_values (ldap_conn, each, "pgpcertid");
|
||
if (!certid || !certid[0])
|
||
{
|
||
my_ldap_value_free (certid);
|
||
continue;
|
||
}
|
||
|
||
/* Have we seen this certid before? */
|
||
if (! strlist_find (dupelist, certid[0]))
|
||
{
|
||
add_to_strlist (&dupelist, certid[0]);
|
||
|
||
vals = ldap_get_values (ldap_conn, each, "gpgfingerprint");
|
||
if (vals && vals[0] && vals[0][0])
|
||
es_fprintf (fp, "pub:%s:", vals[0]);
|
||
else
|
||
es_fprintf (fp, "pub:%s:", certid[0]);
|
||
my_ldap_value_free (vals);
|
||
|
||
vals = ldap_get_values (ldap_conn, each, "pgpkeytype");
|
||
if (vals && vals[0])
|
||
{
|
||
/* The LDAP server doesn't exactly handle this
|
||
well. */
|
||
if (strcasecmp (vals[0], "RSA") == 0)
|
||
es_fputs ("1", fp);
|
||
else if (strcasecmp (vals[0], "DSS/DH") == 0)
|
||
es_fputs ("17", fp);
|
||
}
|
||
my_ldap_value_free (vals);
|
||
|
||
es_fputc (':', fp);
|
||
|
||
vals = ldap_get_values (ldap_conn, each, "pgpkeysize");
|
||
if (vals && vals[0])
|
||
{
|
||
/* Not sure why, but some keys are listed with a
|
||
key size of 0. Treat that like an unknown. */
|
||
if (atoi (vals[0]) > 0)
|
||
es_fprintf (fp, "%d", atoi (vals[0]));
|
||
}
|
||
my_ldap_value_free (vals);
|
||
|
||
es_fputc (':', fp);
|
||
|
||
/* YYYYMMDDHHmmssZ */
|
||
|
||
vals = ldap_get_values (ldap_conn, each, "pgpkeycreatetime");
|
||
if(vals && vals[0] && strlen (vals[0]) == 15)
|
||
{
|
||
es_fprintf (fp, "%u",
|
||
(unsigned int) ldap2epochtime(vals[0]));
|
||
}
|
||
my_ldap_value_free (vals);
|
||
|
||
es_fputc (':', fp);
|
||
|
||
vals = ldap_get_values (ldap_conn, each, "pgpkeyexpiretime");
|
||
if (vals && vals[0] && strlen (vals[0]) == 15)
|
||
{
|
||
es_fprintf (fp, "%u",
|
||
(unsigned int) ldap2epochtime (vals[0]));
|
||
}
|
||
my_ldap_value_free (vals);
|
||
|
||
es_fputc (':', fp);
|
||
|
||
vals = ldap_get_values (ldap_conn, each, "pgprevoked");
|
||
if (vals && vals[0])
|
||
{
|
||
if (atoi (vals[0]) == 1)
|
||
es_fprintf (fp, "r");
|
||
}
|
||
my_ldap_value_free (vals);
|
||
|
||
vals = ldap_get_values (ldap_conn, each, "pgpdisabled");
|
||
if (vals && vals[0])
|
||
{
|
||
if (atoi (vals[0]) ==1)
|
||
es_fprintf (fp, "d");
|
||
}
|
||
my_ldap_value_free (vals);
|
||
|
||
#if 0
|
||
/* This is not yet specified in the keyserver
|
||
protocol, but may be someday. */
|
||
es_fputc (':', fp);
|
||
|
||
vals = ldap_get_values (ldap_conn, each, "modifytimestamp");
|
||
if(vals && vals[0] strlen (vals[0]) == 15)
|
||
{
|
||
es_fprintf (fp, "%u",
|
||
(unsigned int) ldap2epochtime (vals[0]));
|
||
}
|
||
my_ldap_value_free (vals);
|
||
#endif
|
||
|
||
es_fprintf (fp, "\n");
|
||
|
||
/* Now print all the uids that have this certid */
|
||
for (uids = ldap_first_entry (ldap_conn, res);
|
||
uids;
|
||
uids = ldap_next_entry (ldap_conn, uids))
|
||
{
|
||
vals = ldap_get_values (ldap_conn, uids, "pgpcertid");
|
||
if (!vals || !vals[0])
|
||
{
|
||
my_ldap_value_free (vals);
|
||
continue;
|
||
}
|
||
|
||
if (!ascii_strcasecmp (certid[0], vals[0]))
|
||
{
|
||
char **uidvals;
|
||
|
||
es_fprintf (fp, "uid:");
|
||
|
||
uidvals = ldap_get_values (ldap_conn,
|
||
uids, "pgpuserid");
|
||
if (uidvals)
|
||
{
|
||
/* Need to percent escape any colons */
|
||
char *quoted = try_percent_escape (uidvals[0],
|
||
NULL);
|
||
if (quoted)
|
||
es_fputs (quoted, fp);
|
||
xfree (quoted);
|
||
}
|
||
my_ldap_value_free (uidvals);
|
||
|
||
es_fprintf (fp, "\n");
|
||
}
|
||
|
||
ldap_value_free(vals);
|
||
}
|
||
}
|
||
|
||
my_ldap_value_free (certid);
|
||
}
|
||
}
|
||
|
||
ldap_msgfree (res);
|
||
free_strlist (dupelist);
|
||
}
|
||
|
||
if (opt.debug)
|
||
log_debug ("SEARCH %s END\n", pattern);
|
||
|
||
out:
|
||
if (err)
|
||
{
|
||
es_fclose (fp);
|
||
}
|
||
else
|
||
{
|
||
/* Return the read stream. */
|
||
if (fp)
|
||
es_fseek (fp, 0, SEEK_SET);
|
||
|
||
*r_fp = fp;
|
||
}
|
||
|
||
xfree (basedn);
|
||
|
||
if (ldap_conn)
|
||
ldap_unbind (ldap_conn);
|
||
|
||
xfree (filter);
|
||
|
||
return err;
|
||
}
|
||
|
||
|
||
|
||
/* A modlist describes a set of changes to an LDAP entry. (An entry
|
||
consists of 1 or more attributes. Attributes are <name, value>
|
||
pairs. Note: an attribute may be multi-valued in which case
|
||
multiple values are associated with a single name.)
|
||
|
||
A modlist is a NULL terminated array of struct LDAPMod's.
|
||
|
||
Thus, if we have:
|
||
|
||
LDAPMod **modlist;
|
||
|
||
Then:
|
||
|
||
modlist[i]
|
||
|
||
Is the ith modification.
|
||
|
||
Each LDAPMod describes a change to a single attribute. Further,
|
||
there is one modification for each attribute that we want to
|
||
change. The attribute's new value is stored in LDAPMod.mod_values.
|
||
If the attribute is multi-valued, we still only use a single
|
||
LDAPMod structure: mod_values is a NULL-terminated array of
|
||
strings. To delete an attribute from an entry, we set mod_values
|
||
to NULL.
|
||
|
||
Thus, if:
|
||
|
||
modlist[i]->mod_values == NULL
|
||
|
||
then we remove the attribute.
|
||
|
||
(Using LDAP_MOD_DELETE doesn't work here as we don't know if the
|
||
attribute in question exists or not.)
|
||
|
||
Note: this function does NOT copy or free ATTR. It does copy
|
||
VALUE. */
|
||
static void
|
||
modlist_add (LDAPMod ***modlistp, char *attr, const char *value)
|
||
{
|
||
LDAPMod **modlist = *modlistp;
|
||
|
||
LDAPMod **m;
|
||
int nummods = 0;
|
||
|
||
/* Search modlist for the attribute we're playing with. If modlist
|
||
is NULL, then the list is empty. Recall: modlist is a NULL
|
||
terminated array. */
|
||
for (m = modlist; m && *m; m++, nummods ++)
|
||
{
|
||
/* The attribute is already on the list. */
|
||
char **ptr;
|
||
int numvalues = 0;
|
||
|
||
if (strcasecmp ((*m)->mod_type, attr) != 0)
|
||
continue;
|
||
|
||
/* We have this attribute already, so when the REPLACE happens,
|
||
the server attributes will be replaced anyway. */
|
||
if (! value)
|
||
return;
|
||
|
||
/* Attributes can be multi-valued. See if the value is already
|
||
present. mod_values is a NULL terminated array of pointers.
|
||
Note: mod_values can be NULL. */
|
||
for (ptr = (*m)->mod_values; ptr && *ptr; ptr++)
|
||
{
|
||
if (strcmp (*ptr, value) == 0)
|
||
/* Duplicate value, we're done. */
|
||
return;
|
||
numvalues ++;
|
||
}
|
||
|
||
/* Append the value. */
|
||
ptr = xrealloc ((*m)->mod_values, sizeof (char *) * (numvalues + 2));
|
||
|
||
(*m)->mod_values = ptr;
|
||
ptr[numvalues] = xstrdup (value);
|
||
|
||
ptr[numvalues + 1] = NULL;
|
||
|
||
return;
|
||
}
|
||
|
||
/* We didn't find the attr, so make one and add it to the end */
|
||
|
||
/* Like attribute values, the list of attributes is NULL terminated
|
||
array of pointers. */
|
||
modlist = xrealloc (modlist, sizeof (LDAPMod *) * (nummods + 2));
|
||
|
||
*modlistp = modlist;
|
||
modlist[nummods] = xmalloc (sizeof (LDAPMod));
|
||
|
||
modlist[nummods]->mod_op = LDAP_MOD_REPLACE;
|
||
modlist[nummods]->mod_type = attr;
|
||
if (value)
|
||
{
|
||
modlist[nummods]->mod_values = xmalloc (sizeof(char *) * 2);
|
||
|
||
modlist[nummods]->mod_values[0] = xstrdup (value);
|
||
modlist[nummods]->mod_values[1] = NULL;
|
||
}
|
||
else
|
||
modlist[nummods]->mod_values = NULL;
|
||
|
||
modlist[nummods + 1] = NULL;
|
||
|
||
return;
|
||
}
|
||
|
||
/* Look up the value of an attribute in the specified modlist. If the
|
||
attribute is not on the mod list, returns NULL. The result is a
|
||
NULL-terminated array of strings. Don't change it. */
|
||
static char **
|
||
modlist_lookup (LDAPMod **modlist, const char *attr)
|
||
{
|
||
LDAPMod **m;
|
||
for (m = modlist; m && *m; m++)
|
||
{
|
||
if (strcasecmp ((*m)->mod_type, attr) != 0)
|
||
continue;
|
||
|
||
return (*m)->mod_values;
|
||
}
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/* Dump a modlist to a file. This is useful for debugging. */
|
||
static estream_t modlist_dump (LDAPMod **modlist, estream_t output)
|
||
GPGRT_ATTR_USED;
|
||
|
||
static estream_t
|
||
modlist_dump (LDAPMod **modlist, estream_t output)
|
||
{
|
||
LDAPMod **m;
|
||
|
||
int opened = 0;
|
||
|
||
if (! output)
|
||
{
|
||
output = es_fopenmem (0, "rw");
|
||
if (!output)
|
||
return NULL;
|
||
opened = 1;
|
||
}
|
||
|
||
for (m = modlist; m && *m; m++)
|
||
{
|
||
es_fprintf (output, " %s:", (*m)->mod_type);
|
||
|
||
if (! (*m)->mod_values)
|
||
es_fprintf(output, " delete.\n");
|
||
else
|
||
{
|
||
char **ptr;
|
||
int i;
|
||
|
||
int multi = 0;
|
||
if ((*m)->mod_values[0] && (*m)->mod_values[1])
|
||
/* Have at least 2. */
|
||
multi = 1;
|
||
|
||
if (multi)
|
||
es_fprintf (output, "\n");
|
||
|
||
for ((ptr = (*m)->mod_values), (i = 1); ptr && *ptr; ptr++, i ++)
|
||
{
|
||
/* Assuming terminals are about 80 characters wide,
|
||
display at most about 10 lines of debugging
|
||
output. If we do trim the buffer, append '...' to
|
||
the end. */
|
||
const int max_len = 10 * 70;
|
||
size_t value_len = strlen (*ptr);
|
||
int elide = value_len > max_len;
|
||
|
||
if (multi)
|
||
es_fprintf (output, " %d. ", i);
|
||
es_fprintf (output, "`%.*s", max_len, *ptr);
|
||
if (elide)
|
||
es_fprintf (output, "...' (%zd bytes elided)",
|
||
value_len - max_len);
|
||
else
|
||
es_fprintf (output, "'");
|
||
es_fprintf (output, "\n");
|
||
}
|
||
}
|
||
}
|
||
|
||
if (opened)
|
||
es_fseek (output, 0, SEEK_SET);
|
||
|
||
return output;
|
||
}
|
||
|
||
/* Free all of the memory allocated by the mod list. This assumes
|
||
that the attribute names don't have to be freed, but the attributes
|
||
values do. (Which is what modlist_add does.) */
|
||
static void
|
||
modlist_free (LDAPMod **modlist)
|
||
{
|
||
LDAPMod **ml;
|
||
|
||
if (! modlist)
|
||
return;
|
||
|
||
/* Unwind and free the whole modlist structure */
|
||
|
||
/* The modlist is a NULL terminated array of pointers. */
|
||
for (ml = modlist; *ml; ml++)
|
||
{
|
||
LDAPMod *mod = *ml;
|
||
char **ptr;
|
||
|
||
/* The list of values is a NULL termianted array of pointers.
|
||
If the list is NULL, there are no values. */
|
||
|
||
if (mod->mod_values)
|
||
{
|
||
for (ptr = mod->mod_values; *ptr; ptr++)
|
||
xfree (*ptr);
|
||
|
||
xfree (mod->mod_values);
|
||
}
|
||
|
||
xfree (mod);
|
||
}
|
||
xfree (modlist);
|
||
}
|
||
|
||
/* Append two onto the end of one. Two is not freed, but its pointers
|
||
are now part of one. Make sure you don't free them both!
|
||
|
||
As long as you don't add anything to ONE, TWO is still valid.
|
||
After that all bets are off. */
|
||
static void
|
||
modlists_join (LDAPMod ***one, LDAPMod **two)
|
||
{
|
||
int i, one_count = 0, two_count = 0;
|
||
LDAPMod **grow;
|
||
|
||
if (!*two)
|
||
/* two is empty. Nothing to do. */
|
||
return;
|
||
|
||
if (!*one)
|
||
/* one is empty. Just set it equal to *two. */
|
||
{
|
||
*one = two;
|
||
return;
|
||
}
|
||
|
||
for (grow = *one; *grow; grow++)
|
||
one_count ++;
|
||
|
||
for (grow = two; *grow; grow++)
|
||
two_count ++;
|
||
|
||
grow = xrealloc (*one, sizeof(LDAPMod *) * (one_count + two_count + 1));
|
||
|
||
for (i = 0; i < two_count; i++)
|
||
grow[one_count + i] = two[i];
|
||
|
||
grow[one_count + i] = NULL;
|
||
|
||
*one = grow;
|
||
}
|
||
|
||
/* Given a string, unescape C escapes. In particular, \xXX. This
|
||
modifies the string in place. */
|
||
static void
|
||
uncescape (char *str)
|
||
{
|
||
size_t r = 0;
|
||
size_t w = 0;
|
||
|
||
char *first = strchr (str, '\\');
|
||
if (! first)
|
||
/* No backslashes => no escaping. We're done. */
|
||
return;
|
||
|
||
/* Start at the first '\\'. */
|
||
r = w = (uintptr_t) first - (uintptr_t) str;
|
||
|
||
while (str[r])
|
||
{
|
||
/* XXX: What to do about bad escapes?
|
||
XXX: hextobyte already checks the string thus the hexdigitp
|
||
could be removed. */
|
||
if (str[r] == '\\' && str[r + 1] == 'x'
|
||
&& str[r+2] && str[r+3]
|
||
&& hexdigitp (str + r + 2)
|
||
&& hexdigitp (str + r + 3))
|
||
{
|
||
int x = hextobyte (&str[r + 2]);
|
||
log_assert (0 <= x && x <= 0xff);
|
||
|
||
str[w] = x;
|
||
|
||
/* We consumed 4 characters and wrote 1. */
|
||
r += 4;
|
||
w ++;
|
||
}
|
||
else
|
||
str[w ++] = str[r ++];
|
||
}
|
||
|
||
str[w] = '\0';
|
||
}
|
||
|
||
/* Given one line from an info block (`gpg --list-{keys,sigs}
|
||
--with-colons KEYID'), pull it apart and fill in the modlist with
|
||
the relevant (for the LDAP schema) attributes. EXTRACT_STATE
|
||
should initally be set to 0 by the caller. SCHEMAV2 is set if the
|
||
server supports the version 2 schema. */
|
||
static void
|
||
extract_attributes (LDAPMod ***modlist, int *extract_state,
|
||
char *line, int schemav2)
|
||
{
|
||
int field_count;
|
||
char **fields;
|
||
char *keyid;
|
||
int is_pub, is_sub, is_uid, is_sig;
|
||
|
||
/* Remove trailing whitespace */
|
||
trim_trailing_spaces (line);
|
||
|
||
fields = strsplit (line, ':', '\0', &field_count);
|
||
if (field_count == 1)
|
||
/* We only have a single field. There is definitely nothing to
|
||
do. */
|
||
goto out;
|
||
|
||
if (field_count < 7)
|
||
goto out;
|
||
|
||
is_pub = !ascii_strcasecmp ("pub", fields[0]);
|
||
is_sub = !ascii_strcasecmp ("sub", fields[0]);
|
||
is_uid = !ascii_strcasecmp ("uid", fields[0]);
|
||
is_sig = !ascii_strcasecmp ("sig", fields[0]);
|
||
if (!ascii_strcasecmp ("fpr", fields[0]))
|
||
{
|
||
/* Special treatment for a fingerprint. */
|
||
if (!(*extract_state & 1))
|
||
goto out; /* Stray fingerprint line - ignore. */
|
||
*extract_state &= ~1;
|
||
if (field_count >= 10 && schemav2)
|
||
{
|
||
if ((*extract_state & 2))
|
||
modlist_add (modlist, "gpgFingerprint", fields[9]);
|
||
else
|
||
modlist_add (modlist, "gpgSubFingerprint", fields[9]);
|
||
}
|
||
goto out;
|
||
}
|
||
|
||
*extract_state &= ~(1|2);
|
||
if (is_pub)
|
||
*extract_state |= (1|2);
|
||
else if (is_sub)
|
||
*extract_state |= 1;
|
||
|
||
if (!is_pub && !is_sub && !is_uid && !is_sig)
|
||
goto out; /* Not a relevant line. */
|
||
|
||
keyid = fields[4];
|
||
|
||
if (is_uid && strlen (keyid) == 0)
|
||
; /* The uid record type can have an empty keyid. */
|
||
else if (strlen (keyid) == 16
|
||
&& strspn (keyid, "0123456789aAbBcCdDeEfF") == 16)
|
||
; /* Otherwise, we expect exactly 16 hex characters. */
|
||
else
|
||
{
|
||
log_error ("malformed record!\n");
|
||
goto out;
|
||
}
|
||
|
||
if (is_pub)
|
||
{
|
||
int disabled = 0;
|
||
int revoked = 0;
|
||
char *flags;
|
||
for (flags = fields[1]; *flags; flags ++)
|
||
switch (*flags)
|
||
{
|
||
case 'r':
|
||
case 'R':
|
||
revoked = 1;
|
||
break;
|
||
|
||
case 'd':
|
||
case 'D':
|
||
disabled = 1;
|
||
break;
|
||
}
|
||
|
||
/* Note: we always create the pgpDisabled and pgpRevoked
|
||
attributes, regardless of whether the key is disabled/revoked
|
||
or not. This is because a very common search is like
|
||
"(&(pgpUserID=*isabella*)(pgpDisabled=0))" */
|
||
|
||
if (is_pub)
|
||
{
|
||
modlist_add (modlist,"pgpDisabled", disabled ? "1" : "0");
|
||
modlist_add (modlist,"pgpRevoked", revoked ? "1" : "0");
|
||
}
|
||
}
|
||
|
||
if (is_pub || is_sub)
|
||
{
|
||
char padded[6];
|
||
int val;
|
||
|
||
val = atoi (fields[2]);
|
||
if (val < 99999 && val > 0)
|
||
{
|
||
/* We zero pad this on the left to make PGP happy. */
|
||
snprintf (padded, sizeof padded, "%05u", val);
|
||
modlist_add (modlist, "pgpKeySize", padded);
|
||
}
|
||
}
|
||
|
||
if (is_pub)
|
||
{
|
||
char *algo = fields[3];
|
||
int val = atoi (algo);
|
||
switch (val)
|
||
{
|
||
case 1:
|
||
algo = "RSA";
|
||
break;
|
||
|
||
case 17:
|
||
algo = "DSS/DH";
|
||
break;
|
||
|
||
default:
|
||
algo = NULL;
|
||
break;
|
||
}
|
||
|
||
if (algo)
|
||
modlist_add (modlist, "pgpKeyType", algo);
|
||
}
|
||
|
||
if (is_pub || is_sub || is_sig)
|
||
{
|
||
if (is_pub)
|
||
{
|
||
modlist_add (modlist, "pgpCertID", keyid); /* Long keyid(!) */
|
||
modlist_add (modlist, "pgpKeyID", &keyid[8]); /* Short keyid */
|
||
}
|
||
|
||
if (is_sub)
|
||
modlist_add (modlist, "pgpSubKeyID", keyid); /* Long keyid(!) */
|
||
}
|
||
|
||
if (is_pub)
|
||
{
|
||
char *create_time = fields[5];
|
||
|
||
if (strlen (create_time) == 0)
|
||
create_time = NULL;
|
||
else
|
||
{
|
||
char *create_time_orig = create_time;
|
||
struct tm tm;
|
||
time_t t;
|
||
char *end;
|
||
|
||
memset (&tm, 0, sizeof (tm));
|
||
|
||
/* parse_timestamp handles both seconds fromt he epoch and
|
||
ISO 8601 format. We also need to handle YYYY-MM-DD
|
||
format (as generated by gpg1 --with-colons --list-key).
|
||
Check that first and then if it fails, then try
|
||
parse_timestamp. */
|
||
|
||
if (!isodate_human_to_tm (create_time, &tm))
|
||
create_time = tm2ldaptime (&tm);
|
||
else if ((t = parse_timestamp (create_time, &end)) != (time_t) -1
|
||
&& *end == '\0')
|
||
{
|
||
|
||
if (!gnupg_gmtime (&t, &tm))
|
||
create_time = NULL;
|
||
else
|
||
create_time = tm2ldaptime (&tm);
|
||
}
|
||
else
|
||
create_time = NULL;
|
||
|
||
if (! create_time)
|
||
/* Failed to parse string. */
|
||
log_error ("Failed to parse creation time ('%s')",
|
||
create_time_orig);
|
||
}
|
||
|
||
if (create_time)
|
||
{
|
||
modlist_add (modlist, "pgpKeyCreateTime", create_time);
|
||
xfree (create_time);
|
||
}
|
||
}
|
||
|
||
if (is_pub)
|
||
{
|
||
char *expire_time = fields[6];
|
||
|
||
if (strlen (expire_time) == 0)
|
||
expire_time = NULL;
|
||
else
|
||
{
|
||
char *expire_time_orig = expire_time;
|
||
struct tm tm;
|
||
time_t t;
|
||
char *end;
|
||
|
||
memset (&tm, 0, sizeof (tm));
|
||
|
||
/* parse_timestamp handles both seconds fromt he epoch and
|
||
ISO 8601 format. We also need to handle YYYY-MM-DD
|
||
format (as generated by gpg1 --with-colons --list-key).
|
||
Check that first and then if it fails, then try
|
||
parse_timestamp. */
|
||
|
||
if (!isodate_human_to_tm (expire_time, &tm))
|
||
expire_time = tm2ldaptime (&tm);
|
||
else if ((t = parse_timestamp (expire_time, &end)) != (time_t) -1
|
||
&& *end == '\0')
|
||
{
|
||
if (!gnupg_gmtime (&t, &tm))
|
||
expire_time = NULL;
|
||
else
|
||
expire_time = tm2ldaptime (&tm);
|
||
}
|
||
else
|
||
expire_time = NULL;
|
||
|
||
if (! expire_time)
|
||
/* Failed to parse string. */
|
||
log_error ("Failed to parse creation time ('%s')",
|
||
expire_time_orig);
|
||
}
|
||
|
||
if (expire_time)
|
||
{
|
||
modlist_add (modlist, "pgpKeyExpireTime", expire_time);
|
||
xfree (expire_time);
|
||
}
|
||
}
|
||
|
||
if (is_uid && field_count >= 10)
|
||
{
|
||
char *uid = fields[9];
|
||
char *mbox;
|
||
|
||
uncescape (uid);
|
||
modlist_add (modlist, "pgpUserID", uid);
|
||
if (schemav2 && (mbox = mailbox_from_userid (uid, 0)))
|
||
{
|
||
modlist_add (modlist, "gpgMailbox", mbox);
|
||
xfree (mbox);
|
||
}
|
||
}
|
||
|
||
out:
|
||
xfree (fields);
|
||
}
|
||
|
||
/* Send the key in {KEY,KEYLEN} with the metadata {INFO,INFOLEN} to
|
||
the keyserver identified by URI. See server.c:cmd_ks_put for the
|
||
format of the data and metadata. */
|
||
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 err = 0;
|
||
int ldap_err;
|
||
unsigned int serverinfo;
|
||
LDAP *ldap_conn = NULL;
|
||
char *basedn = NULL;
|
||
LDAPMod **modlist = NULL;
|
||
LDAPMod **addlist = NULL;
|
||
char *data_armored = NULL;
|
||
int extract_state;
|
||
|
||
/* The last byte of the info block. */
|
||
const char *infoend = (const char *) info + infolen - 1;
|
||
|
||
/* Enable this code to dump the modlist to /tmp/modlist.txt. */
|
||
#if 0
|
||
# warning Disable debug code before checking in.
|
||
const int dump_modlist = 1;
|
||
#else
|
||
const int dump_modlist = 0;
|
||
#endif
|
||
estream_t dump = NULL;
|
||
|
||
/* Elide a warning. */
|
||
(void) ctrl;
|
||
|
||
if (dirmngr_use_tor ())
|
||
{
|
||
/* For now we do not support LDAP over Tor. */
|
||
log_error (_("LDAP access not possible due to Tor mode\n"));
|
||
return gpg_error (GPG_ERR_NOT_SUPPORTED);
|
||
}
|
||
|
||
err = my_ldap_connect (uri, &ldap_conn, &basedn, NULL, NULL, &serverinfo);
|
||
if (err || !basedn)
|
||
{
|
||
if (!err)
|
||
err = GPG_ERR_GENERAL;
|
||
goto out;
|
||
}
|
||
|
||
if (!(serverinfo & SERVERINFO_REALLDAP))
|
||
{
|
||
/* We appear to have a PGP.com Keyserver, which can unpack the
|
||
* key on its own (not just a dump LDAP server). This will
|
||
* rarely be the case these days. */
|
||
LDAPMod mod;
|
||
LDAPMod *attrs[2];
|
||
char *key[2];
|
||
char *dn;
|
||
|
||
key[0] = data;
|
||
key[1] = NULL;
|
||
memset (&mod, 0, sizeof (mod));
|
||
mod.mod_op = LDAP_MOD_ADD;
|
||
mod.mod_type = (serverinfo & SERVERINFO_PGPKEYV2)? "pgpKeyV2":"pgpKey";
|
||
mod.mod_values = key;
|
||
attrs[0] = &mod;
|
||
attrs[1] = NULL;
|
||
|
||
dn = xtryasprintf ("pgpCertid=virtual,%s", basedn);
|
||
if (!dn)
|
||
{
|
||
err = gpg_error_from_syserror ();
|
||
goto out;
|
||
}
|
||
ldap_err = ldap_add_s (ldap_conn, dn, attrs);
|
||
xfree (dn);
|
||
|
||
if (ldap_err != LDAP_SUCCESS)
|
||
{
|
||
err = ldap_err_to_gpg_err (err);
|
||
goto out;
|
||
}
|
||
|
||
goto out;
|
||
}
|
||
|
||
modlist = xtrymalloc (sizeof (LDAPMod *));
|
||
if (!modlist)
|
||
{
|
||
err = gpg_error_from_syserror ();
|
||
goto out;
|
||
}
|
||
*modlist = NULL;
|
||
|
||
if (dump_modlist)
|
||
{
|
||
dump = es_fopen("/tmp/modlist.txt", "w");
|
||
if (! dump)
|
||
log_error ("failed to open /tmp/modlist.txt: %s\n",
|
||
gpg_strerror (gpg_error_from_syserror ()));
|
||
|
||
if (dump)
|
||
{
|
||
es_fprintf(dump, "data (%zd bytes)\n", datalen);
|
||
es_fprintf(dump, "info (%zd bytes): '\n", infolen);
|
||
es_fwrite(info, infolen, 1, dump);
|
||
es_fprintf(dump, "'\n");
|
||
}
|
||
}
|
||
|
||
/* Start by nulling out all attributes. We try and do a modify
|
||
operation first, so this ensures that we don't leave old
|
||
attributes lying around. */
|
||
modlist_add (&modlist, "pgpDisabled", NULL);
|
||
modlist_add (&modlist, "pgpKeyID", NULL);
|
||
modlist_add (&modlist, "pgpKeyType", NULL);
|
||
modlist_add (&modlist, "pgpUserID", NULL);
|
||
modlist_add (&modlist, "pgpKeyCreateTime", NULL);
|
||
modlist_add (&modlist, "pgpRevoked", NULL);
|
||
modlist_add (&modlist, "pgpSubKeyID", NULL);
|
||
modlist_add (&modlist, "pgpKeySize", NULL);
|
||
modlist_add (&modlist, "pgpKeyExpireTime", NULL);
|
||
modlist_add (&modlist, "pgpCertID", NULL);
|
||
if ((serverinfo & SERVERINFO_SCHEMAV2))
|
||
{
|
||
modlist_add (&modlist, "gpgFingerprint", NULL);
|
||
modlist_add (&modlist, "gpgSubFingerprint", NULL);
|
||
modlist_add (&modlist, "gpgMailbox", NULL);
|
||
}
|
||
|
||
/* Assemble the INFO stuff into LDAP attributes */
|
||
extract_state = 0;
|
||
while (infolen > 0)
|
||
{
|
||
char *temp = NULL;
|
||
|
||
char *newline = memchr (info, '\n', infolen);
|
||
if (! newline)
|
||
/* The last line is not \n terminated! Make a copy so we can
|
||
add a NUL terminator. */
|
||
{
|
||
temp = xmalloc (infolen + 1);
|
||
memcpy (temp, info, infolen);
|
||
info = temp;
|
||
newline = (char *) info + infolen;
|
||
}
|
||
|
||
*newline = '\0';
|
||
|
||
extract_attributes (&addlist, &extract_state, info,
|
||
(serverinfo & SERVERINFO_SCHEMAV2));
|
||
|
||
infolen = infolen - ((uintptr_t) newline - (uintptr_t) info + 1);
|
||
info = newline + 1;
|
||
|
||
/* Sanity check. */
|
||
if (! temp)
|
||
log_assert ((char *) info + infolen - 1 == infoend);
|
||
else
|
||
{
|
||
log_assert (infolen == -1);
|
||
xfree (temp);
|
||
}
|
||
}
|
||
|
||
modlist_add (&addlist, "objectClass", "pgpKeyInfo");
|
||
|
||
err = armor_data (&data_armored, data, datalen);
|
||
if (err)
|
||
goto out;
|
||
|
||
modlist_add (&addlist,
|
||
(serverinfo & SERVERINFO_PGPKEYV2)? "pgpKeyV2":"pgpKey",
|
||
data_armored);
|
||
|
||
/* Now append addlist onto modlist. */
|
||
modlists_join (&modlist, addlist);
|
||
|
||
if (dump)
|
||
{
|
||
estream_t input = modlist_dump (modlist, NULL);
|
||
if (input)
|
||
{
|
||
copy_stream (input, dump);
|
||
es_fclose (input);
|
||
}
|
||
}
|
||
|
||
/* Going on the assumption that modify operations are more frequent
|
||
than adds, we try a modify first. If it's not there, we just
|
||
turn around and send an add command for the same key. Otherwise,
|
||
the modify brings the server copy into compliance with our copy.
|
||
Note that unlike the LDAP keyserver (and really, any other
|
||
keyserver) this does NOT merge signatures, but replaces the whole
|
||
key. This should make some people very happy. */
|
||
{
|
||
char **attrval;
|
||
char *dn;
|
||
|
||
if ((serverinfo & SERVERINFO_NTDS))
|
||
{
|
||
/* The modern way using a CN RDN with the fingerprint. This
|
||
* has the advantage that we won't have duplicate 64 bit
|
||
* keyids in the store. In particular NTDS requires the
|
||
* DN to be unique. */
|
||
attrval = modlist_lookup (addlist, "gpgFingerprint");
|
||
/* We should have exactly one value. */
|
||
if (!attrval || !(attrval[0] && !attrval[1]))
|
||
{
|
||
log_error ("ks-ldap: bad gpgFingerprint provided\n");
|
||
err = GPG_ERR_GENERAL;
|
||
goto out;
|
||
}
|
||
dn = xtryasprintf ("CN=%s,%s", attrval[0], basedn);
|
||
}
|
||
else /* The old style way. */
|
||
{
|
||
attrval = modlist_lookup (addlist, "pgpCertID");
|
||
/* We should have exactly one value. */
|
||
if (!attrval || !(attrval[0] && !attrval[1]))
|
||
{
|
||
log_error ("ks-ldap: bad pgpCertID provided\n");
|
||
err = GPG_ERR_GENERAL;
|
||
goto out;
|
||
}
|
||
dn = xtryasprintf ("pgpCertID=%s,%s", attrval[0], basedn);
|
||
}
|
||
if (!dn)
|
||
{
|
||
err = gpg_error_from_syserror ();
|
||
goto out;
|
||
}
|
||
if (opt.debug)
|
||
log_debug ("ks-ldap: using DN: %s\n", dn);
|
||
|
||
npth_unprotect ();
|
||
err = ldap_modify_s (ldap_conn, dn, modlist);
|
||
if (err == LDAP_NO_SUCH_OBJECT)
|
||
err = ldap_add_s (ldap_conn, dn, addlist);
|
||
npth_protect ();
|
||
|
||
xfree (dn);
|
||
|
||
if (err != LDAP_SUCCESS)
|
||
{
|
||
log_error ("ks-ldap: error adding key to keyserver: %s\n",
|
||
ldap_err2string (err));
|
||
err = ldap_err_to_gpg_err (err);
|
||
}
|
||
}
|
||
|
||
out:
|
||
if (dump)
|
||
es_fclose (dump);
|
||
|
||
if (ldap_conn)
|
||
ldap_unbind (ldap_conn);
|
||
|
||
xfree (basedn);
|
||
|
||
modlist_free (modlist);
|
||
xfree (addlist);
|
||
|
||
xfree (data_armored);
|
||
|
||
return err;
|
||
}
|