security-and-privacy/gnupg
security-and-privacy
/
gnupg
mirror of git://git.gnupg.org/gnupg.git
1
0
Fork 0
Code Releases Activity
gnupg/dirmngr/ldap-misc.c

335 lines
10 KiB
C
Raw Blame History

/* ldap-misc.c - Miscellaneous helpers for LDAP functions
* Copyright (C) 2015, 2021 g10 Code GmbH
*
* This file is part of GnuPG.
*
* GnuPG is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* GnuPG is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses/>.
* SPDX-License-Identifier: GPL-3.0-or-later
*/
#include <config.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "dirmngr-err.h"
#include "../common/util.h"
#include "ldap-misc.h"
/* Convert an LDAP error to a GPG error. */
gpg_err_code_t
ldap_err_to_gpg_err (int code)
{
gpg_err_code_t ec;
switch (code)
{
#ifdef LDAP_X_CONNECTING
case LDAP_X_CONNECTING: ec = GPG_ERR_LDAP_X_CONNECTING; break;
#endif
case LDAP_REFERRAL_LIMIT_EXCEEDED: ec = GPG_ERR_LDAP_REFERRAL_LIMIT; break;
case LDAP_CLIENT_LOOP: ec = GPG_ERR_LDAP_CLIENT_LOOP; break;
case LDAP_NO_RESULTS_RETURNED: ec = GPG_ERR_LDAP_NO_RESULTS; break;
case LDAP_CONTROL_NOT_FOUND: ec = GPG_ERR_LDAP_CONTROL_NOT_FOUND; break;
case LDAP_NOT_SUPPORTED: ec = GPG_ERR_LDAP_NOT_SUPPORTED; break;
case LDAP_CONNECT_ERROR: ec = GPG_ERR_LDAP_CONNECT; break;
case LDAP_NO_MEMORY: ec = GPG_ERR_LDAP_NO_MEMORY; break;
case LDAP_PARAM_ERROR: ec = GPG_ERR_LDAP_PARAM; break;
case LDAP_USER_CANCELLED: ec = GPG_ERR_LDAP_USER_CANCELLED; break;
case LDAP_FILTER_ERROR: ec = GPG_ERR_LDAP_FILTER; break;
case LDAP_AUTH_UNKNOWN: ec = GPG_ERR_LDAP_AUTH_UNKNOWN; break;
case LDAP_TIMEOUT: ec = GPG_ERR_LDAP_TIMEOUT; break;
case LDAP_DECODING_ERROR: ec = GPG_ERR_LDAP_DECODING; break;
case LDAP_ENCODING_ERROR: ec = GPG_ERR_LDAP_ENCODING; break;
case LDAP_LOCAL_ERROR: ec = GPG_ERR_LDAP_LOCAL; break;
case LDAP_SERVER_DOWN: ec = GPG_ERR_LDAP_SERVER_DOWN; break;
case LDAP_SUCCESS: ec = GPG_ERR_LDAP_SUCCESS; break;
case LDAP_OPERATIONS_ERROR: ec = GPG_ERR_LDAP_OPERATIONS; break;
case LDAP_PROTOCOL_ERROR: ec = GPG_ERR_LDAP_PROTOCOL; break;
case LDAP_TIMELIMIT_EXCEEDED: ec = GPG_ERR_LDAP_TIMELIMIT; break;
case LDAP_SIZELIMIT_EXCEEDED: ec = GPG_ERR_LDAP_SIZELIMIT; break;
case LDAP_COMPARE_FALSE: ec = GPG_ERR_LDAP_COMPARE_FALSE; break;
case LDAP_COMPARE_TRUE: ec = GPG_ERR_LDAP_COMPARE_TRUE; break;
case LDAP_AUTH_METHOD_NOT_SUPPORTED: ec=GPG_ERR_LDAP_UNSUPPORTED_AUTH;break;
case LDAP_STRONG_AUTH_REQUIRED: ec = GPG_ERR_LDAP_STRONG_AUTH_RQRD; break;
case LDAP_PARTIAL_RESULTS: ec = GPG_ERR_LDAP_PARTIAL_RESULTS; break;
case LDAP_REFERRAL: ec = GPG_ERR_LDAP_REFERRAL; break;
#ifdef LDAP_ADMINLIMIT_EXCEEDED
case LDAP_ADMINLIMIT_EXCEEDED: ec = GPG_ERR_LDAP_ADMINLIMIT; break;
#endif
#ifdef LDAP_UNAVAILABLE_CRITICAL_EXTENSION
case LDAP_UNAVAILABLE_CRITICAL_EXTENSION:
ec = GPG_ERR_LDAP_UNAVAIL_CRIT_EXTN; break;
#endif
case LDAP_CONFIDENTIALITY_REQUIRED: ec = GPG_ERR_LDAP_CONFIDENT_RQRD; break;
case LDAP_SASL_BIND_IN_PROGRESS: ec = GPG_ERR_LDAP_SASL_BIND_INPROG; break;
case LDAP_NO_SUCH_ATTRIBUTE: ec = GPG_ERR_LDAP_NO_SUCH_ATTRIBUTE; break;
case LDAP_UNDEFINED_TYPE: ec = GPG_ERR_LDAP_UNDEFINED_TYPE; break;
case LDAP_INAPPROPRIATE_MATCHING: ec = GPG_ERR_LDAP_BAD_MATCHING; break;
case LDAP_CONSTRAINT_VIOLATION: ec = GPG_ERR_LDAP_CONST_VIOLATION; break;
#ifdef LDAP_TYPE_OR_VALUE_EXISTS
case LDAP_TYPE_OR_VALUE_EXISTS: ec = GPG_ERR_LDAP_TYPE_VALUE_EXISTS; break;
#endif
case LDAP_INVALID_SYNTAX: ec = GPG_ERR_LDAP_INV_SYNTAX; break;
case LDAP_NO_SUCH_OBJECT: ec = GPG_ERR_LDAP_NO_SUCH_OBJ; break;
case LDAP_ALIAS_PROBLEM: ec = GPG_ERR_LDAP_ALIAS_PROBLEM; break;
case LDAP_INVALID_DN_SYNTAX: ec = GPG_ERR_LDAP_INV_DN_SYNTAX; break;
case LDAP_IS_LEAF: ec = GPG_ERR_LDAP_IS_LEAF; break;
case LDAP_ALIAS_DEREF_PROBLEM: ec = GPG_ERR_LDAP_ALIAS_DEREF; break;
#ifdef LDAP_X_PROXY_AUTHZ_FAILURE
case LDAP_X_PROXY_AUTHZ_FAILURE: ec = GPG_ERR_LDAP_X_PROXY_AUTH_FAIL; break;
#endif
case LDAP_INAPPROPRIATE_AUTH: ec = GPG_ERR_LDAP_BAD_AUTH; break;
case LDAP_INVALID_CREDENTIALS: ec = GPG_ERR_LDAP_INV_CREDENTIALS; break;
#ifdef LDAP_INSUFFICIENT_ACCESS
case LDAP_INSUFFICIENT_ACCESS: ec = GPG_ERR_LDAP_INSUFFICIENT_ACC; break;
#endif
case LDAP_BUSY: ec = GPG_ERR_LDAP_BUSY; break;
case LDAP_UNAVAILABLE: ec = GPG_ERR_LDAP_UNAVAILABLE; break;
case LDAP_UNWILLING_TO_PERFORM: ec = GPG_ERR_LDAP_UNWILL_TO_PERFORM; break;
case LDAP_LOOP_DETECT: ec = GPG_ERR_LDAP_LOOP_DETECT; break;
case LDAP_NAMING_VIOLATION: ec = GPG_ERR_LDAP_NAMING_VIOLATION; break;
case LDAP_OBJECT_CLASS_VIOLATION: ec = GPG_ERR_LDAP_OBJ_CLS_VIOLATION; break;
case LDAP_NOT_ALLOWED_ON_NONLEAF: ec=GPG_ERR_LDAP_NOT_ALLOW_NONLEAF;break;
case LDAP_NOT_ALLOWED_ON_RDN: ec = GPG_ERR_LDAP_NOT_ALLOW_ON_RDN; break;
case LDAP_ALREADY_EXISTS: ec = GPG_ERR_LDAP_ALREADY_EXISTS; break;
case LDAP_NO_OBJECT_CLASS_MODS: ec = GPG_ERR_LDAP_NO_OBJ_CLASS_MODS; break;
case LDAP_RESULTS_TOO_LARGE: ec = GPG_ERR_LDAP_RESULTS_TOO_LARGE; break;
case LDAP_AFFECTS_MULTIPLE_DSAS: ec = GPG_ERR_LDAP_AFFECTS_MULT_DSAS; break;
#ifdef LDAP_VLV_ERROR
case LDAP_VLV_ERROR: ec = GPG_ERR_LDAP_VLV; break;
#endif
case LDAP_OTHER: ec = GPG_ERR_LDAP_OTHER; break;
#ifdef LDAP_CUP_RESOURCES_EXHAUSTED
case LDAP_CUP_RESOURCES_EXHAUSTED: ec=GPG_ERR_LDAP_CUP_RESOURCE_LIMIT;break;
case LDAP_CUP_SECURITY_VIOLATION: ec=GPG_ERR_LDAP_CUP_SEC_VIOLATION; break;
case LDAP_CUP_INVALID_DATA: ec = GPG_ERR_LDAP_CUP_INV_DATA; break;
case LDAP_CUP_UNSUPPORTED_SCHEME: ec = GPG_ERR_LDAP_CUP_UNSUP_SCHEME; break;
case LDAP_CUP_RELOAD_REQUIRED: ec = GPG_ERR_LDAP_CUP_RELOAD; break;
#endif
#ifdef LDAP_CANCELLED
case LDAP_CANCELLED: ec = GPG_ERR_LDAP_CANCELLED; break;
#endif
#ifdef LDAP_NO_SUCH_OPERATION
case LDAP_NO_SUCH_OPERATION: ec = GPG_ERR_LDAP_NO_SUCH_OPERATION; break;
#endif
#ifdef LDAP_TOO_LATE
case LDAP_TOO_LATE: ec = GPG_ERR_LDAP_TOO_LATE; break;
#endif
#ifdef LDAP_CANNOT_CANCEL
case LDAP_CANNOT_CANCEL: ec = GPG_ERR_LDAP_CANNOT_CANCEL; break;
#endif
#ifdef LDAP_ASSERTION_FAILED
case LDAP_ASSERTION_FAILED: ec = GPG_ERR_LDAP_ASSERTION_FAILED; break;
#endif
#ifdef LDAP_PROXIED_AUTHORIZATION_DENIED
case LDAP_PROXIED_AUTHORIZATION_DENIED:
ec = GPG_ERR_LDAP_PROX_AUTH_DENIED; break;
#endif
default:
#if defined(LDAP_E_ERROR) && defined(LDAP_X_ERROR)
if (LDAP_E_ERROR (code))
ec = GPG_ERR_LDAP_E_GENERAL;
else if (LDAP_X_ERROR (code))
ec = GPG_ERR_LDAP_X_GENERAL;
else
#endif
ec = GPG_ERR_LDAP_GENERAL;
break;
}
return ec;
}
/* Retrieve an LDAP error and return it's GPG equivalent. */
gpg_err_code_t
ldap_to_gpg_err (LDAP *ld)
{
#if defined(HAVE_LDAP_GET_OPTION) && defined(LDAP_OPT_ERROR_NUMBER)
int err;
if (ldap_get_option (ld, LDAP_OPT_ERROR_NUMBER, &err) == 0)
return ldap_err_to_gpg_err (err);
else
return GPG_ERR_GENERAL;
#elif defined(HAVE_LDAP_LD_ERRNO)
return ldap_err_to_gpg_err (ld->ld_errno);
#else
/* We should never get here since the LDAP library should always
have either ldap_get_option or ld_errno, but just in case... */
return GPG_ERR_INTERNAL;
#endif
}
/* Parse an extended filter syntax as used by dirmngr_ldap.c
* For example:
*
* ^CN=foo, OU=My Users&(objectClasses=*)
*
* Uses "CN=foo, OU=My Users" as base DN and "(objectClasses=*)" as
* filter. If the base prefix includes an ampersand, it needs to be
* doubled. The usual escaping rules for DNs (for the base) and
* filters apply. Other examples:
*
* ^CN=foo, OU=My Users&
*
* Use just the base DN.
*
* ^CN=foo, OU=My Users&SCOPE&
*
* Specify the scope which is "base", "one", or "sub". May of course
* also be followed by a filter.
*
* ^&SCOPE&(objectClasses=*)
*
* Give a scope and a filter. Note that R_SCOPE is only changed if a
* STRING has scope parameter. Setting this initally to -1 allows to
* detect this case.
*/
gpg_error_t
ldap_parse_extfilter (const char *string, int silent,
char **r_base, int *r_scope, char **r_filter)
{
gpg_error_t err = 0;
char *base = NULL;
char *filter = NULL;
const char *s;
char *p;
if (r_base)
*r_base = NULL;
if (r_filter)
*r_filter = NULL;
if (*string == '^')
{
string++;
base = xtrymalloc (strlen (string)+1);
if (!base)
{
err = gpg_error_from_syserror ();
goto leave;
}
for (s=string, p=base; *s; s++)
{
*p++ = *s;
if (*s == '&' && s[1] == '&')
s++; /* Skip quoted ampersand. */
else if (*s == '&')
{
p--;
break;
}
}
*p = 0;
if (!*s)
{
if (!silent)
log_info ("LDAP extended filter is not terminated\n");
err = gpg_error (GPG_ERR_SYNTAX);
goto leave;
}
string = s + 1;
}
if (!*string)
goto leave; /* ready. */
if (!strncmp (string, "base&", 5))
{
string += 5;
if (r_scope)
*r_scope = LDAP_SCOPE_BASE;
}
else if (!strncmp (string, "one&", 4))
{
string += 4;
if (r_scope)
*r_scope = LDAP_SCOPE_ONELEVEL;
}
else if (!strncmp (string, "sub&", 4))
{
string += 4;
if (r_scope)
*r_scope = LDAP_SCOPE_SUBTREE;
}
if (!*string)
goto leave; /* ready. */
if (*string != '(')
{
if (!silent)
log_info ("LDAP filter does not start with a left parentheses\n");
err = gpg_error (GPG_ERR_SYNTAX);
goto leave;
}
if (string[strlen(string)-1] != ')')
{
if (!silent)
log_info ("LDAP filter does not end with a right parentheses\n");
err = gpg_error (GPG_ERR_SYNTAX);
goto leave;
}
filter = xtrystrdup (string);
if (!filter)
err = gpg_error_from_syserror ();
leave:
if (err)
{
xfree (base);
xfree (filter);
}
else
{
if (r_base)
*r_base = base;
else
xfree (base);
if (r_filter)
*r_filter = filter;
else
xfree (filter);
}
return err;
}
View Git Blame Copy Permalink