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/* $OpenBSD: aldap.h,v 1.15 2022/10/13 04:55:33 jmatthew Exp $ */
/*
* Copyright (c) 2008 Alexander Schrijver <aschrijver@openbsd.org>
* Copyright (c) 2006, 2007 Marc Balmer <mbalmer@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <stdio.h>
#include <ber.h>
#include <tls.h>
#define LDAP_URL "ldap://"
#define LDAPS_URL "ldaps://"
#define LDAPTLS_URL "ldap+tls://"
#define LDAPI_URL "ldapi://"
#define LDAP_PORT 389
#define LDAPS_PORT 636
#define LDAP_PAGED_OID "1.2.840.113556.1.4.319"
#define LDAP_STARTTLS_OID "1.3.6.1.4.1.1466.20037"
#define LDAP_SASL_MECH_EXTERNAL "EXTERNAL"
struct aldap {
#define ALDAP_ERR_SUCCESS 0
#define ALDAP_ERR_PARSER_ERROR 1
#define ALDAP_ERR_INVALID_FILTER 2
#define ALDAP_ERR_OPERATION_FAILED 3
#define ALDAP_ERR_TLS_ERROR 4
u_int8_t err;
int msgid;
struct ber ber;
int fd;
struct tls *tls;
struct evbuffer *buf;
};
struct aldap_page_control {
int size;
char *cookie;
unsigned int cookie_len;
};
struct aldap_message {
int msgid;
int message_type;
struct ber_element *msg;
struct ber_element *header;
struct ber_element *protocol_op;
struct ber_element *dn;
union {
struct {
long long rescode;
struct ber_element *diagmsg;
} res;
struct {
struct ber_element *iter;
struct ber_element *attrs;
} search;
} body;
struct ber_element *references;
struct aldap_page_control *page;
};
enum aldap_protocol {
LDAP,
LDAPS,
LDAPTLS,
LDAPI
};
struct aldap_stringset {
size_t len;
struct ber_octetstring *str;
};
struct aldap_url {
int protocol;
char *host;
in_port_t port;
char *dn;
#define MAXATTR 1024
char *attributes[MAXATTR];
int scope;
char *filter;
char *buffer;
};
enum protocol_op {
LDAP_REQ_BIND = 0,
LDAP_RES_BIND = 1,
LDAP_REQ_UNBIND_30 = 2,
LDAP_REQ_SEARCH = 3,
LDAP_RES_SEARCH_ENTRY = 4,
LDAP_RES_SEARCH_RESULT = 5,
LDAP_REQ_MODIFY = 6,
LDAP_RES_MODIFY = 7,
LDAP_REQ_ADD = 8,
LDAP_RES_ADD = 9,
LDAP_REQ_DELETE_30 = 10,
LDAP_RES_DELETE = 11,
LDAP_REQ_MODRDN = 12,
LDAP_RES_MODRDN = 13,
LDAP_REQ_COMPARE = 14,
LDAP_RES_COMPARE = 15,
LDAP_REQ_ABANDON_30 = 16,
LDAP_RES_SEARCH_REFERENCE = 19,
LDAP_REQ_EXTENDED = 23,
LDAP_RES_EXTENDED = 24
};
enum deref_aliases {
LDAP_DEREF_NEVER = 0,
LDAP_DEREF_SEARCHING = 1,
LDAP_DEREF_FINDING = 2,
LDAP_DEREF_ALWAYS = 3,
};
enum authentication_choice {
LDAP_AUTH_SIMPLE = 0,
LDAP_AUTH_SASL = 3,
};
enum scope {
LDAP_SCOPE_BASE = 0,
LDAP_SCOPE_ONELEVEL = 1,
LDAP_SCOPE_SUBTREE = 2,
};
enum result_code {
LDAP_SUCCESS = 0,
LDAP_OPERATIONS_ERROR = 1,
LDAP_PROTOCOL_ERROR = 2,
LDAP_TIMELIMIT_EXCEEDED = 3,
LDAP_SIZELIMIT_EXCEEDED = 4,
LDAP_COMPARE_FALSE = 5,
LDAP_COMPARE_TRUE = 6,
LDAP_STRONG_AUTH_NOT_SUPPORTED = 7,
LDAP_STRONG_AUTH_REQUIRED = 8,
LDAP_REFERRAL = 10,
LDAP_ADMINLIMIT_EXCEEDED = 11,
LDAP_UNAVAILABLE_CRITICAL_EXTENSION = 12,
LDAP_CONFIDENTIALITY_REQUIRED = 13,
LDAP_SASL_BIND_IN_PROGRESS = 14,
LDAP_NO_SUCH_ATTRIBUTE = 16,
LDAP_UNDEFINED_TYPE = 17,
LDAP_INAPPROPRIATE_MATCHING = 18,
LDAP_CONSTRAINT_VIOLATION = 19,
LDAP_TYPE_OR_VALUE_EXISTS = 20,
LDAP_INVALID_SYNTAX = 21,
LDAP_NO_SUCH_OBJECT = 32,
LDAP_ALIAS_PROBLEM = 33,
LDAP_INVALID_DN_SYNTAX = 34,
LDAP_ALIAS_DEREF_PROBLEM = 36,
LDAP_INAPPROPRIATE_AUTH = 48,
LDAP_INVALID_CREDENTIALS = 49,
LDAP_INSUFFICIENT_ACCESS = 50,
LDAP_BUSY = 51,
LDAP_UNAVAILABLE = 52,
LDAP_UNWILLING_TO_PERFORM = 53,
LDAP_LOOP_DETECT = 54,
LDAP_NAMING_VIOLATION = 64,
LDAP_OBJECT_CLASS_VIOLATION = 65,
LDAP_NOT_ALLOWED_ON_NONLEAF = 66,
LDAP_NOT_ALLOWED_ON_RDN = 67,
LDAP_ALREADY_EXISTS = 68,
LDAP_NO_OBJECT_CLASS_MODS = 69,
LDAP_AFFECTS_MULTIPLE_DSAS = 71,
LDAP_OTHER = 80,
};
enum filter {
LDAP_FILT_AND = 0,
LDAP_FILT_OR = 1,
LDAP_FILT_NOT = 2,
LDAP_FILT_EQ = 3,
LDAP_FILT_SUBS = 4,
LDAP_FILT_GE = 5,
LDAP_FILT_LE = 6,
LDAP_FILT_PRES = 7,
LDAP_FILT_APPR = 8,
};
enum subfilter {
LDAP_FILT_SUBS_INIT = 0,
LDAP_FILT_SUBS_ANY = 1,
LDAP_FILT_SUBS_FIN = 2,
};
struct aldap *aldap_init(int);
int aldap_tls(struct aldap *, struct tls_config *,
const char *);
int aldap_close(struct aldap *);
struct aldap_message *aldap_parse(struct aldap *);
void aldap_freemsg(struct aldap_message *);
int aldap_req_starttls(struct aldap *);
int aldap_bind(struct aldap *, char *, char *);
int aldap_bind_sasl_external(struct aldap *, char *);
int aldap_unbind(struct aldap *);
int aldap_search(struct aldap *, char *, enum scope, char *, char **, int, int, int, struct aldap_page_control *);
int aldap_get_errno(struct aldap *, const char **);
int aldap_get_resultcode(struct aldap_message *);
char *aldap_get_dn(struct aldap_message *);
char *aldap_get_diagmsg(struct aldap_message *);
struct aldap_stringset *aldap_get_references(struct aldap_message *);
void aldap_free_references(char **values);
int aldap_parse_url(const char *, struct aldap_url *);
void aldap_free_url(struct aldap_url *);
int aldap_search_url(struct aldap *, char *, int, int, int,
struct aldap_page_control *);
int aldap_count_attrs(struct aldap_message *);
int aldap_match_attr(struct aldap_message *, char *,
struct aldap_stringset **);
int aldap_first_attr(struct aldap_message *, char **, struct
aldap_stringset **);
int aldap_next_attr(struct aldap_message *, char **,
struct aldap_stringset **);
int aldap_free_attr(struct aldap_stringset *);
struct aldap_page_control *aldap_parse_page_control(struct ber_element *, size_t len);
void aldap_freepage(struct aldap_page_control *);
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