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freebsd-nq/contrib/sendmail/libsm/ldap.c
Gregory Neil Shapiro d0cef73d40 Import sendmail 8.14.1
2007-04-09 01:38:51 +00:00

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/*
* Copyright (c) 2001-2006 Sendmail, Inc. and its suppliers.
* All rights reserved.
*
* By using this file, you agree to the terms and conditions set
* forth in the LICENSE file which can be found at the top level of
* the sendmail distribution.
*/
/* some "deprecated" calls are used, e.g., ldap_get_values() */
#define LDAP_DEPRECATED 1
#include <sm/gen.h>
SM_RCSID("@(#)$Id: ldap.c,v 1.78 2006/08/30 22:56:59 ca Exp $")
#if LDAPMAP
# include <sys/types.h>
# include <errno.h>
# include <setjmp.h>
# include <stdlib.h>
# include <unistd.h>
# include <sm/bitops.h>
# include <sm/clock.h>
# include <sm/conf.h>
# include <sm/debug.h>
# include <sm/errstring.h>
# include <sm/ldap.h>
# include <sm/string.h>
# ifdef EX_OK
# undef EX_OK /* for SVr4.2 SMP */
# endif /* EX_OK */
# include <sm/sysexits.h>
SM_DEBUG_T SmLDAPTrace = SM_DEBUG_INITIALIZER("sm_trace_ldap",
"@(#)$Debug: sm_trace_ldap - trace LDAP operations $");
static void ldaptimeout __P((int));
static bool sm_ldap_has_objectclass __P((SM_LDAP_STRUCT *, LDAPMessage *, char *));
static SM_LDAP_RECURSE_ENTRY *sm_ldap_add_recurse __P((SM_LDAP_RECURSE_LIST **, char *, int, SM_RPOOL_T *));
/*
** SM_LDAP_CLEAR -- set default values for SM_LDAP_STRUCT
**
** Parameters:
** lmap -- pointer to SM_LDAP_STRUCT to clear
**
** Returns:
** None.
**
*/
#if _FFR_LDAP_VERSION
# if defined(LDAP_VERSION_MAX) && _FFR_LDAP_VERSION > LDAP_VERSION_MAX
ERROR FFR_LDAP_VERSION > _LDAP_VERSION_MAX
# endif /* defined(LDAP_VERSION_MAX) && _FFR_LDAP_VERSION > LDAP_VERSION_MAX */
# if defined(LDAP_VERSION_MIN) && _FFR_LDAP_VERSION < LDAP_VERSION_MIN
ERROR FFR_LDAP_VERSION < _LDAP_VERSION_MIN
# endif /* defined(LDAP_VERSION_MIN) && _FFR_LDAP_VERSION < LDAP_VERSION_MIN */
# define SM_LDAP_VERSION_DEFAULT _FFR_LDAP_VERSION
#else /* _FFR_LDAP_VERSION */
# define SM_LDAP_VERSION_DEFAULT 0
#endif /* _FFR_LDAP_VERSION */
void
sm_ldap_clear(lmap)
SM_LDAP_STRUCT *lmap;
{
if (lmap == NULL)
return;
lmap->ldap_host = NULL;
lmap->ldap_port = LDAP_PORT;
lmap->ldap_uri = NULL;
lmap->ldap_version = SM_LDAP_VERSION_DEFAULT;
lmap->ldap_deref = LDAP_DEREF_NEVER;
lmap->ldap_timelimit = LDAP_NO_LIMIT;
lmap->ldap_sizelimit = LDAP_NO_LIMIT;
# ifdef LDAP_REFERRALS
lmap->ldap_options = LDAP_OPT_REFERRALS;
# else /* LDAP_REFERRALS */
lmap->ldap_options = 0;
# endif /* LDAP_REFERRALS */
lmap->ldap_attrsep = '\0';
lmap->ldap_binddn = NULL;
lmap->ldap_secret = NULL;
lmap->ldap_method = LDAP_AUTH_SIMPLE;
lmap->ldap_base = NULL;
lmap->ldap_scope = LDAP_SCOPE_SUBTREE;
lmap->ldap_attrsonly = LDAPMAP_FALSE;
lmap->ldap_timeout.tv_sec = 0;
lmap->ldap_timeout.tv_usec = 0;
lmap->ldap_ld = NULL;
lmap->ldap_filter = NULL;
lmap->ldap_attr[0] = NULL;
lmap->ldap_attr_type[0] = SM_LDAP_ATTR_NONE;
lmap->ldap_attr_needobjclass[0] = NULL;
lmap->ldap_res = NULL;
lmap->ldap_next = NULL;
lmap->ldap_pid = 0;
lmap->ldap_multi_args = false;
}
/*
** SM_LDAP_START -- actually connect to an LDAP server
**
** Parameters:
** name -- name of map for debug output.
** lmap -- the LDAP map being opened.
**
** Returns:
** true if connection is successful, false otherwise.
**
** Side Effects:
** Populates lmap->ldap_ld.
*/
static jmp_buf LDAPTimeout;
#define SM_LDAP_SETTIMEOUT(to) \
do \
{ \
if (to != 0) \
{ \
if (setjmp(LDAPTimeout) != 0) \
{ \
errno = ETIMEDOUT; \
return false; \
} \
ev = sm_setevent(to, ldaptimeout, 0); \
} \
} while (0)
#define SM_LDAP_CLEARTIMEOUT() \
do \
{ \
if (ev != NULL) \
sm_clrevent(ev); \
} while (0)
bool
sm_ldap_start(name, lmap)
char *name;
SM_LDAP_STRUCT *lmap;
{
int bind_result;
int save_errno = 0;
char *id;
SM_EVENT *ev = NULL;
LDAP *ld = NULL;
if (sm_debug_active(&SmLDAPTrace, 2))
sm_dprintf("ldapmap_start(%s)\n", name == NULL ? "" : name);
if (lmap->ldap_host != NULL)
id = lmap->ldap_host;
else if (lmap->ldap_uri != NULL)
id = lmap->ldap_uri;
else
id = "localhost";
if (sm_debug_active(&SmLDAPTrace, 9))
{
/* Don't print a port number for LDAP URIs */
if (lmap->ldap_uri != NULL)
sm_dprintf("ldapmap_start(%s)\n", id);
else
sm_dprintf("ldapmap_start(%s, %d)\n", id,
lmap->ldap_port);
}
if (lmap->ldap_uri != NULL)
{
#if SM_CONF_LDAP_INITIALIZE
/* LDAP server supports URIs so use them directly */
save_errno = ldap_initialize(&ld, lmap->ldap_uri);
#else /* SM_CONF_LDAP_INITIALIZE */
int err;
LDAPURLDesc *ludp = NULL;
/* Blast apart URL and use the ldap_init/ldap_open below */
err = ldap_url_parse(lmap->ldap_uri, &ludp);
if (err != 0)
{
errno = err + E_LDAPURLBASE;
return false;
}
lmap->ldap_host = sm_strdup_x(ludp->lud_host);
if (lmap->ldap_host == NULL)
{
save_errno = errno;
ldap_free_urldesc(ludp);
errno = save_errno;
return false;
}
lmap->ldap_port = ludp->lud_port;
ldap_free_urldesc(ludp);
#endif /* SM_CONF_LDAP_INITIALIZE */
}
if (ld == NULL)
{
# if USE_LDAP_INIT
ld = ldap_init(lmap->ldap_host, lmap->ldap_port);
save_errno = errno;
# else /* USE_LDAP_INIT */
/*
** If using ldap_open(), the actual connection to the server
** happens now so we need the timeout here. For ldap_init(),
** the connection happens at bind time.
*/
SM_LDAP_SETTIMEOUT(lmap->ldap_timeout.tv_sec);
ld = ldap_open(lmap->ldap_host, lmap->ldap_port);
save_errno = errno;
/* clear the event if it has not sprung */
SM_LDAP_CLEARTIMEOUT();
# endif /* USE_LDAP_INIT */
}
errno = save_errno;
if (ld == NULL)
return false;
sm_ldap_setopts(ld, lmap);
# if USE_LDAP_INIT
/*
** If using ldap_init(), the actual connection to the server
** happens at ldap_bind_s() so we need the timeout here.
*/
SM_LDAP_SETTIMEOUT(lmap->ldap_timeout.tv_sec);
# endif /* USE_LDAP_INIT */
# ifdef LDAP_AUTH_KRBV4
if (lmap->ldap_method == LDAP_AUTH_KRBV4 &&
lmap->ldap_secret != NULL)
{
/*
** Need to put ticket in environment here instead of
** during parseargs as there may be different tickets
** for different LDAP connections.
*/
(void) putenv(lmap->ldap_secret);
}
# endif /* LDAP_AUTH_KRBV4 */
bind_result = ldap_bind_s(ld, lmap->ldap_binddn,
lmap->ldap_secret, lmap->ldap_method);
# if USE_LDAP_INIT
/* clear the event if it has not sprung */
SM_LDAP_CLEARTIMEOUT();
# endif /* USE_LDAP_INIT */
if (bind_result != LDAP_SUCCESS)
{
errno = bind_result + E_LDAPBASE;
return false;
}
/* Save PID to make sure only this PID closes the LDAP connection */
lmap->ldap_pid = getpid();
lmap->ldap_ld = ld;
return true;
}
/* ARGSUSED */
static void
ldaptimeout(unused)
int unused;
{
/*
** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD
** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE
** DOING.
*/
errno = ETIMEDOUT;
longjmp(LDAPTimeout, 1);
}
/*
** SM_LDAP_SEARCH_M -- initiate multi-key LDAP search
**
** Initiate an LDAP search, return the msgid.
** The calling function must collect the results.
**
** Parameters:
** lmap -- LDAP map information
** argv -- key vector of substitutions in LDAP filter
** NOTE: argv must have SM_LDAP_ARGS elements to prevent
** out of bound array references
**
** Returns:
** <0 on failure (SM_LDAP_ERR*), msgid on success
**
*/
int
sm_ldap_search_m(lmap, argv)
SM_LDAP_STRUCT *lmap;
char **argv;
{
int msgid;
char *fp, *p, *q;
char filter[LDAPMAP_MAX_FILTER + 1];
SM_REQUIRE(lmap != NULL);
SM_REQUIRE(argv != NULL);
SM_REQUIRE(argv[0] != NULL);
memset(filter, '\0', sizeof filter);
fp = filter;
p = lmap->ldap_filter;
while ((q = strchr(p, '%')) != NULL)
{
char *key;
if (lmap->ldap_multi_args)
{
#if SM_LDAP_ARGS < 10
# ERROR _SM_LDAP_ARGS must be 10
#endif /* SM_LDAP_ARGS < 10 */
if (q[1] == 's')
key = argv[0];
else if (q[1] >= '0' && q[1] <= '9')
{
key = argv[q[1] - '0'];
if (key == NULL)
{
# if SM_LDAP_ERROR_ON_MISSING_ARGS
return SM_LDAP_ERR_ARG_MISS;
# else /* SM_LDAP_ERROR_ON_MISSING_ARGS */
key = "";
# endif /* SM_LDAP_ERROR_ON_MISSING_ARGS */
}
}
else
key = NULL;
}
else
key = argv[0];
if (q[1] == 's')
{
(void) sm_snprintf(fp, SPACELEFT(filter, fp),
"%.*s%s", (int) (q - p), p, key);
fp += strlen(fp);
p = q + 2;
}
else if (q[1] == '0' ||
(lmap->ldap_multi_args && q[1] >= '0' && q[1] <= '9'))
{
char *k = key;
(void) sm_snprintf(fp, SPACELEFT(filter, fp),
"%.*s", (int) (q - p), p);
fp += strlen(fp);
p = q + 2;
/* Properly escape LDAP special characters */
while (SPACELEFT(filter, fp) > 0 &&
*k != '\0')
{
if (*k == '*' || *k == '(' ||
*k == ')' || *k == '\\')
{
(void) sm_strlcat(fp,
(*k == '*' ? "\\2A" :
(*k == '(' ? "\\28" :
(*k == ')' ? "\\29" :
(*k == '\\' ? "\\5C" :
"\00")))),
SPACELEFT(filter, fp));
fp += strlen(fp);
k++;
}
else
*fp++ = *k++;
}
}
else
{
(void) sm_snprintf(fp, SPACELEFT(filter, fp),
"%.*s", (int) (q - p + 1), p);
p = q + (q[1] == '%' ? 2 : 1);
fp += strlen(fp);
}
}
(void) sm_strlcpy(fp, p, SPACELEFT(filter, fp));
if (sm_debug_active(&SmLDAPTrace, 20))
sm_dprintf("ldap search filter=%s\n", filter);
lmap->ldap_res = NULL;
msgid = ldap_search(lmap->ldap_ld, lmap->ldap_base,
lmap->ldap_scope, filter,
(lmap->ldap_attr[0] == NULL ? NULL :
lmap->ldap_attr),
lmap->ldap_attrsonly);
return msgid;
}
/*
** SM_LDAP_SEARCH -- initiate LDAP search
**
** Initiate an LDAP search, return the msgid.
** The calling function must collect the results.
** Note this is just a wrapper into sm_ldap_search_m()
**
** Parameters:
** lmap -- LDAP map information
** key -- key to substitute in LDAP filter
**
** Returns:
** <0 on failure, msgid on success
**
*/
int
sm_ldap_search(lmap, key)
SM_LDAP_STRUCT *lmap;
char *key;
{
char *argv[SM_LDAP_ARGS];
memset(argv, '\0', sizeof argv);
argv[0] = key;
return sm_ldap_search_m(lmap, argv);
}
/*
** SM_LDAP_HAS_OBJECTCLASS -- determine if an LDAP entry is part of a
** particular objectClass
**
** Parameters:
** lmap -- pointer to SM_LDAP_STRUCT in use
** entry -- current LDAP entry struct
** ocvalue -- particular objectclass in question.
** may be of form (fee|foo|fum) meaning
** any entry can be part of either fee,
** foo or fum objectclass
**
** Returns:
** true if item has that objectClass
*/
static bool
sm_ldap_has_objectclass(lmap, entry, ocvalue)
SM_LDAP_STRUCT *lmap;
LDAPMessage *entry;
char *ocvalue;
{
char **vals = NULL;
int i;
if (ocvalue == NULL)
return false;
vals = ldap_get_values(lmap->ldap_ld, entry, "objectClass");
if (vals == NULL)
return false;
for (i = 0; vals[i] != NULL; i++)
{
char *p;
char *q;
p = q = ocvalue;
while (*p != '\0')
{
while (*p != '\0' && *p != '|')
p++;
if ((p - q) == strlen(vals[i]) &&
sm_strncasecmp(vals[i], q, p - q) == 0)
{
ldap_value_free(vals);
return true;
}
while (*p == '|')
p++;
q = p;
}
}
ldap_value_free(vals);
return false;
}
/*
** SM_LDAP_RESULTS -- return results from an LDAP lookup in result
**
** Parameters:
** lmap -- pointer to SM_LDAP_STRUCT in use
** msgid -- msgid returned by sm_ldap_search()
** flags -- flags for the lookup
** delim -- delimiter for result concatenation
** rpool -- memory pool for storage
** result -- return string
** recurse -- recursion list
**
** Returns:
** status (sysexit)
*/
# define SM_LDAP_ERROR_CLEANUP() \
{ \
if (lmap->ldap_res != NULL) \
{ \
ldap_msgfree(lmap->ldap_res); \
lmap->ldap_res = NULL; \
} \
(void) ldap_abandon(lmap->ldap_ld, msgid); \
}
static SM_LDAP_RECURSE_ENTRY *
sm_ldap_add_recurse(top, item, type, rpool)
SM_LDAP_RECURSE_LIST **top;
char *item;
int type;
SM_RPOOL_T *rpool;
{
int n;
int m;
int p;
int insertat;
int moveb;
int oldsizeb;
int rc;
SM_LDAP_RECURSE_ENTRY *newe;
SM_LDAP_RECURSE_ENTRY **olddata;
/*
** This code will maintain a list of
** SM_LDAP_RECURSE_ENTRY structures
** in ascending order.
*/
if (*top == NULL)
{
/* Allocate an initial SM_LDAP_RECURSE_LIST struct */
*top = sm_rpool_malloc_x(rpool, sizeof **top);
(*top)->lrl_cnt = 0;
(*top)->lrl_size = 0;
(*top)->lrl_data = NULL;
}
if ((*top)->lrl_cnt >= (*top)->lrl_size)
{
/* Grow the list of SM_LDAP_RECURSE_ENTRY ptrs */
olddata = (*top)->lrl_data;
if ((*top)->lrl_size == 0)
{
oldsizeb = 0;
(*top)->lrl_size = 256;
}
else
{
oldsizeb = (*top)->lrl_size * sizeof *((*top)->lrl_data);
(*top)->lrl_size *= 2;
}
(*top)->lrl_data = sm_rpool_malloc_x(rpool,
(*top)->lrl_size * sizeof *((*top)->lrl_data));
if (oldsizeb > 0)
memcpy((*top)->lrl_data, olddata, oldsizeb);
}
/*
** Binary search/insert item:type into list.
** Return current entry pointer if already exists.
*/
n = 0;
m = (*top)->lrl_cnt - 1;
if (m < 0)
insertat = 0;
else
insertat = -1;
while (insertat == -1)
{
p = (m + n) / 2;
rc = sm_strcasecmp(item, (*top)->lrl_data[p]->lr_search);
if (rc == 0)
rc = type - (*top)->lrl_data[p]->lr_type;
if (rc < 0)
m = p - 1;
else if (rc > 0)
n = p + 1;
else
return (*top)->lrl_data[p];
if (m == -1)
insertat = 0;
else if (n >= (*top)->lrl_cnt)
insertat = (*top)->lrl_cnt;
else if (m < n)
insertat = m + 1;
}
/*
** Not found in list, make room
** at insert point and add it.
*/
newe = sm_rpool_malloc_x(rpool, sizeof *newe);
if (newe != NULL)
{
moveb = ((*top)->lrl_cnt - insertat) * sizeof *((*top)->lrl_data);
if (moveb > 0)
memmove(&((*top)->lrl_data[insertat + 1]),
&((*top)->lrl_data[insertat]),
moveb);
newe->lr_search = sm_rpool_strdup_x(rpool, item);
newe->lr_type = type;
newe->lr_ludp = NULL;
newe->lr_attrs = NULL;
newe->lr_done = false;
((*top)->lrl_data)[insertat] = newe;
(*top)->lrl_cnt++;
}
return newe;
}
int
sm_ldap_results(lmap, msgid, flags, delim, rpool, result,
resultln, resultsz, recurse)
SM_LDAP_STRUCT *lmap;
int msgid;
int flags;
int delim;
SM_RPOOL_T *rpool;
char **result;
int *resultln;
int *resultsz;
SM_LDAP_RECURSE_LIST *recurse;
{
bool toplevel;
int i;
int statp;
int vsize;
int ret;
int save_errno;
char *p;
SM_LDAP_RECURSE_ENTRY *rl;
/* Are we the top top level of the search? */
toplevel = (recurse == NULL);
/* Get results */
statp = EX_NOTFOUND;
while ((ret = ldap_result(lmap->ldap_ld, msgid, 0,
(lmap->ldap_timeout.tv_sec == 0 ? NULL :
&(lmap->ldap_timeout)),
&(lmap->ldap_res))) == LDAP_RES_SEARCH_ENTRY)
{
LDAPMessage *entry;
/* If we don't want multiple values and we have one, break */
if ((char) delim == '\0' &&
!bitset(SM_LDAP_SINGLEMATCH, flags) &&
*result != NULL)
break;
/* Cycle through all entries */
for (entry = ldap_first_entry(lmap->ldap_ld, lmap->ldap_res);
entry != NULL;
entry = ldap_next_entry(lmap->ldap_ld, lmap->ldap_res))
{
BerElement *ber;
char *attr;
char **vals = NULL;
char *dn;
/*
** If matching only and found an entry,
** no need to spin through attributes
*/
if (bitset(SM_LDAP_MATCHONLY, flags))
{
statp = EX_OK;
continue;
}
#if _FFR_LDAP_SINGLEDN
if (bitset(SM_LDAP_SINGLEDN, flags) && *result != NULL)
{
/* only wanted one match */
SM_LDAP_ERROR_CLEANUP();
errno = ENOENT;
return EX_NOTFOUND;
}
#endif /* _FFR_LDAP_SINGLEDN */
/* record completed DN's to prevent loops */
dn = ldap_get_dn(lmap->ldap_ld, entry);
if (dn == NULL)
{
save_errno = sm_ldap_geterrno(lmap->ldap_ld);
save_errno += E_LDAPBASE;
SM_LDAP_ERROR_CLEANUP();
errno = save_errno;
return EX_TEMPFAIL;
}
rl = sm_ldap_add_recurse(&recurse, dn,
SM_LDAP_ATTR_DN,
rpool);
if (rl == NULL)
{
ldap_memfree(dn);
SM_LDAP_ERROR_CLEANUP();
errno = ENOMEM;
return EX_OSERR;
}
else if (rl->lr_done)
{
/* already on list, skip it */
ldap_memfree(dn);
continue;
}
ldap_memfree(dn);
# if !defined(LDAP_VERSION_MAX) && !defined(LDAP_OPT_SIZELIMIT)
/*
** Reset value to prevent lingering
** LDAP_DECODING_ERROR due to
** OpenLDAP 1.X's hack (see below)
*/
lmap->ldap_ld->ld_errno = LDAP_SUCCESS;
# endif /* !defined(LDAP_VERSION_MAX) !defined(LDAP_OPT_SIZELIMIT) */
for (attr = ldap_first_attribute(lmap->ldap_ld, entry,
&ber);
attr != NULL;
attr = ldap_next_attribute(lmap->ldap_ld, entry,
ber))
{
char *tmp, *vp_tmp;
int type;
char *needobjclass = NULL;
type = SM_LDAP_ATTR_NONE;
for (i = 0; lmap->ldap_attr[i] != NULL; i++)
{
if (sm_strcasecmp(lmap->ldap_attr[i],
attr) == 0)
{
type = lmap->ldap_attr_type[i];
needobjclass = lmap->ldap_attr_needobjclass[i];
break;
}
}
if (bitset(SM_LDAP_USE_ALLATTR, flags) &&
type == SM_LDAP_ATTR_NONE)
{
/* URL lookups specify attrs to use */
type = SM_LDAP_ATTR_NORMAL;
needobjclass = NULL;
}
if (type == SM_LDAP_ATTR_NONE)
{
/* attribute not requested */
ldap_memfree(attr);
SM_LDAP_ERROR_CLEANUP();
errno = EFAULT;
return EX_SOFTWARE;
}
/*
** For recursion on a particular attribute,
** we may need to see if this entry is
** part of a particular objectclass.
** Also, ignore objectClass attribute.
** Otherwise we just ignore this attribute.
*/
if (type == SM_LDAP_ATTR_OBJCLASS ||
(needobjclass != NULL &&
!sm_ldap_has_objectclass(lmap, entry,
needobjclass)))
{
ldap_memfree(attr);
continue;
}
if (lmap->ldap_attrsonly == LDAPMAP_FALSE)
{
vals = ldap_get_values(lmap->ldap_ld,
entry,
attr);
if (vals == NULL)
{
save_errno = sm_ldap_geterrno(lmap->ldap_ld);
if (save_errno == LDAP_SUCCESS)
{
ldap_memfree(attr);
continue;
}
/* Must be an error */
save_errno += E_LDAPBASE;
ldap_memfree(attr);
SM_LDAP_ERROR_CLEANUP();
errno = save_errno;
return EX_TEMPFAIL;
}
}
statp = EX_OK;
# if !defined(LDAP_VERSION_MAX) && !defined(LDAP_OPT_SIZELIMIT)
/*
** Reset value to prevent lingering
** LDAP_DECODING_ERROR due to
** OpenLDAP 1.X's hack (see below)
*/
lmap->ldap_ld->ld_errno = LDAP_SUCCESS;
# endif /* !defined(LDAP_VERSION_MAX) !defined(LDAP_OPT_SIZELIMIT) */
/*
** If matching only,
** no need to spin through entries
*/
if (bitset(SM_LDAP_MATCHONLY, flags))
{
if (lmap->ldap_attrsonly == LDAPMAP_FALSE)
ldap_value_free(vals);
ldap_memfree(attr);
continue;
}
/*
** If we don't want multiple values,
** return first found.
*/
if ((char) delim == '\0')
{
if (*result != NULL)
{
/* already have a value */
if (bitset(SM_LDAP_SINGLEMATCH,
flags))
{
/* only wanted one match */
SM_LDAP_ERROR_CLEANUP();
errno = ENOENT;
return EX_NOTFOUND;
}
break;
}
if (lmap->ldap_attrsonly == LDAPMAP_TRUE)
{
*result = sm_rpool_strdup_x(rpool,
attr);
ldap_memfree(attr);
break;
}
if (vals[0] == NULL)
{
ldap_value_free(vals);
ldap_memfree(attr);
continue;
}
vsize = strlen(vals[0]) + 1;
if (lmap->ldap_attrsep != '\0')
vsize += strlen(attr) + 1;
*result = sm_rpool_malloc_x(rpool,
vsize);
if (lmap->ldap_attrsep != '\0')
sm_snprintf(*result, vsize,
"%s%c%s",
attr,
lmap->ldap_attrsep,
vals[0]);
else
sm_strlcpy(*result, vals[0],
vsize);
ldap_value_free(vals);
ldap_memfree(attr);
break;
}
/* attributes only */
if (lmap->ldap_attrsonly == LDAPMAP_TRUE)
{
if (*result == NULL)
*result = sm_rpool_strdup_x(rpool,
attr);
else
{
if (bitset(SM_LDAP_SINGLEMATCH,
flags) &&
*result != NULL)
{
/* only wanted one match */
SM_LDAP_ERROR_CLEANUP();
errno = ENOENT;
return EX_NOTFOUND;
}
vsize = strlen(*result) +
strlen(attr) + 2;
tmp = sm_rpool_malloc_x(rpool,
vsize);
(void) sm_snprintf(tmp,
vsize, "%s%c%s",
*result, (char) delim,
attr);
*result = tmp;
}
ldap_memfree(attr);
continue;
}
/*
** If there is more than one, munge then
** into a map_coldelim separated string.
** If we are recursing we may have an entry
** with no 'normal' values to put in the
** string.
** This is not an error.
*/
if (type == SM_LDAP_ATTR_NORMAL &&
bitset(SM_LDAP_SINGLEMATCH, flags) &&
*result != NULL)
{
/* only wanted one match */
SM_LDAP_ERROR_CLEANUP();
errno = ENOENT;
return EX_NOTFOUND;
}
vsize = 0;
for (i = 0; vals[i] != NULL; i++)
{
if (type == SM_LDAP_ATTR_DN ||
type == SM_LDAP_ATTR_FILTER ||
type == SM_LDAP_ATTR_URL)
{
/* add to recursion */
if (sm_ldap_add_recurse(&recurse,
vals[i],
type,
rpool) == NULL)
{
SM_LDAP_ERROR_CLEANUP();
errno = ENOMEM;
return EX_OSERR;
}
continue;
}
vsize += strlen(vals[i]) + 1;
if (lmap->ldap_attrsep != '\0')
vsize += strlen(attr) + 1;
}
/*
** Create/Append to string any normal
** attribute values. Otherwise, just free
** memory and move on to the next
** attribute in this entry.
*/
if (type == SM_LDAP_ATTR_NORMAL && vsize > 0)
{
char *pe;
/* Grow result string if needed */
if ((*resultln + vsize) >= *resultsz)
{
while ((*resultln + vsize) >= *resultsz)
{
if (*resultsz == 0)
*resultsz = 1024;
else
*resultsz *= 2;
}
vp_tmp = sm_rpool_malloc_x(rpool, *resultsz);
*vp_tmp = '\0';
if (*result != NULL)
sm_strlcpy(vp_tmp,
*result,
*resultsz);
*result = vp_tmp;
}
p = *result + *resultln;
pe = *result + *resultsz;
for (i = 0; vals[i] != NULL; i++)
{
if (*resultln > 0 &&
p < pe)
*p++ = (char) delim;
if (lmap->ldap_attrsep != '\0')
{
p += sm_strlcpy(p, attr,
pe - p);
if (p < pe)
*p++ = lmap->ldap_attrsep;
}
p += sm_strlcpy(p, vals[i],
pe - p);
*resultln = p - (*result);
if (p >= pe)
{
/* Internal error: buffer too small for LDAP values */
SM_LDAP_ERROR_CLEANUP();
errno = ENOMEM;
return EX_OSERR;
}
}
}
ldap_value_free(vals);
ldap_memfree(attr);
}
save_errno = sm_ldap_geterrno(lmap->ldap_ld);
/*
** We check save_errno != LDAP_DECODING_ERROR since
** OpenLDAP 1.X has a very ugly *undocumented*
** hack of returning this error code from
** ldap_next_attribute() if the library freed the
** ber attribute. See:
** http://www.openldap.org/lists/openldap-devel/9901/msg00064.html
*/
if (save_errno != LDAP_SUCCESS &&
save_errno != LDAP_DECODING_ERROR)
{
/* Must be an error */
save_errno += E_LDAPBASE;
SM_LDAP_ERROR_CLEANUP();
errno = save_errno;
return EX_TEMPFAIL;
}
/* mark this DN as done */
rl->lr_done = true;
if (rl->lr_ludp != NULL)
{
ldap_free_urldesc(rl->lr_ludp);
rl->lr_ludp = NULL;
}
if (rl->lr_attrs != NULL)
{
free(rl->lr_attrs);
rl->lr_attrs = NULL;
}
/* We don't want multiple values and we have one */
if ((char) delim == '\0' &&
!bitset(SM_LDAP_SINGLEMATCH, flags) &&
*result != NULL)
break;
}
save_errno = sm_ldap_geterrno(lmap->ldap_ld);
if (save_errno != LDAP_SUCCESS &&
save_errno != LDAP_DECODING_ERROR)
{
/* Must be an error */
save_errno += E_LDAPBASE;
SM_LDAP_ERROR_CLEANUP();
errno = save_errno;
return EX_TEMPFAIL;
}
ldap_msgfree(lmap->ldap_res);
lmap->ldap_res = NULL;
}
if (ret == 0)
save_errno = ETIMEDOUT;
else
save_errno = sm_ldap_geterrno(lmap->ldap_ld);
if (save_errno != LDAP_SUCCESS)
{
statp = EX_TEMPFAIL;
if (ret != 0)
{
switch (save_errno)
{
#ifdef LDAP_SERVER_DOWN
case LDAP_SERVER_DOWN:
#endif /* LDAP_SERVER_DOWN */
case LDAP_TIMEOUT:
case LDAP_UNAVAILABLE:
/*
** server disappeared,
** try reopen on next search
*/
statp = EX_RESTART;
break;
}
save_errno += E_LDAPBASE;
}
SM_LDAP_ERROR_CLEANUP();
errno = save_errno;
return statp;
}
if (lmap->ldap_res != NULL)
{
ldap_msgfree(lmap->ldap_res);
lmap->ldap_res = NULL;
}
if (toplevel)
{
int rlidx;
/*
** Spin through the built-up recurse list at the top
** of the recursion. Since new items are added at the
** end of the shared list, we actually only ever get
** one level of recursion before things pop back to the
** top. Any items added to the list during that recursion
** will be expanded by the top level.
*/
for (rlidx = 0; recurse != NULL && rlidx < recurse->lrl_cnt;
rlidx++)
{
int newflags;
int sid;
int status;
rl = recurse->lrl_data[rlidx];
newflags = flags;
if (rl->lr_done)
{
/* already expanded */
continue;
}
if (rl->lr_type == SM_LDAP_ATTR_DN)
{
/* do DN search */
sid = ldap_search(lmap->ldap_ld,
rl->lr_search,
lmap->ldap_scope,
"(objectClass=*)",
(lmap->ldap_attr[0] == NULL ?
NULL : lmap->ldap_attr),
lmap->ldap_attrsonly);
}
else if (rl->lr_type == SM_LDAP_ATTR_FILTER)
{
/* do new search */
sid = ldap_search(lmap->ldap_ld,
lmap->ldap_base,
lmap->ldap_scope,
rl->lr_search,
(lmap->ldap_attr[0] == NULL ?
NULL : lmap->ldap_attr),
lmap->ldap_attrsonly);
}
else if (rl->lr_type == SM_LDAP_ATTR_URL)
{
/* Parse URL */
sid = ldap_url_parse(rl->lr_search,
&rl->lr_ludp);
if (sid != 0)
{
errno = sid + E_LDAPURLBASE;
return EX_TEMPFAIL;
}
/* We need to add objectClass */
if (rl->lr_ludp->lud_attrs != NULL)
{
int attrnum = 0;
while (rl->lr_ludp->lud_attrs[attrnum] != NULL)
{
if (strcasecmp(rl->lr_ludp->lud_attrs[attrnum],
"objectClass") == 0)
{
/* already requested */
attrnum = -1;
break;
}
attrnum++;
}
if (attrnum >= 0)
{
int i;
rl->lr_attrs = (char **)malloc(sizeof(char *) * (attrnum + 2));
if (rl->lr_attrs == NULL)
{
save_errno = errno;
ldap_free_urldesc(rl->lr_ludp);
errno = save_errno;
return EX_TEMPFAIL;
}
for (i = 0 ; i < attrnum; i++)
{
rl->lr_attrs[i] = rl->lr_ludp->lud_attrs[i];
}
rl->lr_attrs[i++] = "objectClass";
rl->lr_attrs[i++] = NULL;
}
}
/*
** Use the existing connection
** for this search. It really
** should use lud_scheme://lud_host:lud_port/
** instead but that would require
** opening a new connection.
** This should be fixed ASAP.
*/
sid = ldap_search(lmap->ldap_ld,
rl->lr_ludp->lud_dn,
rl->lr_ludp->lud_scope,
rl->lr_ludp->lud_filter,
rl->lr_attrs,
lmap->ldap_attrsonly);
/* Use the attributes specified by URL */
newflags |= SM_LDAP_USE_ALLATTR;
}
else
{
/* unknown or illegal attribute type */
errno = EFAULT;
return EX_SOFTWARE;
}
/* Collect results */
if (sid == -1)
{
save_errno = sm_ldap_geterrno(lmap->ldap_ld);
statp = EX_TEMPFAIL;
switch (save_errno)
{
#ifdef LDAP_SERVER_DOWN
case LDAP_SERVER_DOWN:
#endif /* LDAP_SERVER_DOWN */
case LDAP_TIMEOUT:
case LDAP_UNAVAILABLE:
/*
** server disappeared,
** try reopen on next search
*/
statp = EX_RESTART;
break;
}
errno = save_errno + E_LDAPBASE;
return statp;
}
status = sm_ldap_results(lmap, sid, newflags, delim,
rpool, result, resultln,
resultsz, recurse);
save_errno = errno;
if (status != EX_OK && status != EX_NOTFOUND)
{
errno = save_errno;
return status;
}
/* Mark as done */
rl->lr_done = true;
if (rl->lr_ludp != NULL)
{
ldap_free_urldesc(rl->lr_ludp);
rl->lr_ludp = NULL;
}
if (rl->lr_attrs != NULL)
{
free(rl->lr_attrs);
rl->lr_attrs = NULL;
}
/* Reset rlidx as new items may have been added */
rlidx = -1;
}
}
return statp;
}
/*
** SM_LDAP_CLOSE -- close LDAP connection
**
** Parameters:
** lmap -- LDAP map information
**
** Returns:
** None.
**
*/
void
sm_ldap_close(lmap)
SM_LDAP_STRUCT *lmap;
{
if (lmap->ldap_ld == NULL)
return;
if (lmap->ldap_pid == getpid())
ldap_unbind(lmap->ldap_ld);
lmap->ldap_ld = NULL;
lmap->ldap_pid = 0;
}
/*
** SM_LDAP_SETOPTS -- set LDAP options
**
** Parameters:
** ld -- LDAP session handle
** lmap -- LDAP map information
**
** Returns:
** None.
**
*/
void
sm_ldap_setopts(ld, lmap)
LDAP *ld;
SM_LDAP_STRUCT *lmap;
{
# if USE_LDAP_SET_OPTION
if (lmap->ldap_version != 0)
{
ldap_set_option(ld, LDAP_OPT_PROTOCOL_VERSION,
&lmap->ldap_version);
}
ldap_set_option(ld, LDAP_OPT_DEREF, &lmap->ldap_deref);
if (bitset(LDAP_OPT_REFERRALS, lmap->ldap_options))
ldap_set_option(ld, LDAP_OPT_REFERRALS, LDAP_OPT_ON);
else
ldap_set_option(ld, LDAP_OPT_REFERRALS, LDAP_OPT_OFF);
ldap_set_option(ld, LDAP_OPT_SIZELIMIT, &lmap->ldap_sizelimit);
ldap_set_option(ld, LDAP_OPT_TIMELIMIT, &lmap->ldap_timelimit);
# ifdef LDAP_OPT_RESTART
ldap_set_option(ld, LDAP_OPT_RESTART, LDAP_OPT_ON);
# endif /* LDAP_OPT_RESTART */
# else /* USE_LDAP_SET_OPTION */
/* From here on in we can use ldap internal timelimits */
ld->ld_deref = lmap->ldap_deref;
ld->ld_options = lmap->ldap_options;
ld->ld_sizelimit = lmap->ldap_sizelimit;
ld->ld_timelimit = lmap->ldap_timelimit;
# endif /* USE_LDAP_SET_OPTION */
}
/*
** SM_LDAP_GETERRNO -- get ldap errno value
**
** Parameters:
** ld -- LDAP session handle
**
** Returns:
** LDAP errno.
**
*/
int
sm_ldap_geterrno(ld)
LDAP *ld;
{
int err = LDAP_SUCCESS;
# if defined(LDAP_VERSION_MAX) && LDAP_VERSION_MAX >= 3
(void) ldap_get_option(ld, LDAP_OPT_ERROR_NUMBER, &err);
# else /* defined(LDAP_VERSION_MAX) && LDAP_VERSION_MAX >= 3 */
# ifdef LDAP_OPT_SIZELIMIT
err = ldap_get_lderrno(ld, NULL, NULL);
# else /* LDAP_OPT_SIZELIMIT */
err = ld->ld_errno;
/*
** Reset value to prevent lingering LDAP_DECODING_ERROR due to
** OpenLDAP 1.X's hack (see above)
*/
ld->ld_errno = LDAP_SUCCESS;
# endif /* LDAP_OPT_SIZELIMIT */
# endif /* defined(LDAP_VERSION_MAX) && LDAP_VERSION_MAX >= 3 */
return err;
}
# endif /* LDAPMAP */
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