diff options
Diffstat (limited to 'servers/slapd/result.c')
| -rw-r--r-- | servers/slapd/result.c | 1922 |
1 files changed, 1922 insertions, 0 deletions
diff --git a/servers/slapd/result.c b/servers/slapd/result.c new file mode 100644 index 0000000..a928e95 --- /dev/null +++ b/servers/slapd/result.c @@ -0,0 +1,1922 @@ +/* result.c - routines to send ldap results, errors, and referrals */ +/* $OpenLDAP$ */ +/* This work is part of OpenLDAP Software <http://www.openldap.org/>. + * + * Copyright 1998-2022 The OpenLDAP Foundation. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted only as authorized by the OpenLDAP + * Public License. + * + * A copy of this license is available in the file LICENSE in the + * top-level directory of the distribution or, alternatively, at + * <http://www.OpenLDAP.org/license.html>. + */ +/* Portions Copyright (c) 1995 Regents of the University of Michigan. + * All rights reserved. + * + * Redistribution and use in source and binary forms are permitted + * provided that this notice is preserved and that due credit is given + * to the University of Michigan at Ann Arbor. The name of the University + * may not be used to endorse or promote products derived from this + * software without specific prior written permission. This software + * is provided ``as is'' without express or implied warranty. + */ + +#include "portable.h" + +#include <stdio.h> + +#include <ac/socket.h> +#include <ac/errno.h> +#include <ac/string.h> +#include <ac/ctype.h> +#include <ac/time.h> +#include <ac/unistd.h> + +#include "slap.h" + +#if SLAP_STATS_ETIME +#define ETIME_SETUP \ + struct timeval now; \ + char timestr[64]; \ + (void) gettimeofday( &now, NULL ); \ + now.tv_sec -= op->o_time; \ + now.tv_usec -= op->o_tusec; \ + if ( now.tv_usec < 0 ) { \ + --now.tv_sec; now.tv_usec += 1000000; \ + } \ + sprintf(timestr, "qtime=%d.%06d etime=%d.%06d", \ + (int)op->o_qtime.tv_sec, (int)op->o_qtime.tv_usec, \ + (int)now.tv_sec, (int)now.tv_usec); +#define ETIME_LOGFMT "%s " +#define StatslogEtime(lvl,fmt,pfx,tag,err,...) \ + Debug(lvl,fmt,pfx,tag,err,timestr,__VA_ARGS__) +#else +#define ETIME_SETUP +#define ETIME_LOGFMT "" +#define StatslogEtime Debug +#endif /* SLAP_STATS_ETIME */ + +const struct berval slap_dummy_bv = BER_BVNULL; + +int slap_null_cb( Operation *op, SlapReply *rs ) +{ + return 0; +} + +int slap_freeself_cb( Operation *op, SlapReply *rs ) +{ + assert( op->o_callback != NULL ); + + op->o_tmpfree( op->o_callback, op->o_tmpmemctx ); + op->o_callback = NULL; + + return SLAP_CB_CONTINUE; +} + +static char *v2ref( BerVarray ref, const char *text ) +{ + size_t len = 0, i = 0; + char *v2; + + if(ref == NULL) { + if (text) { + return ch_strdup(text); + } else { + return NULL; + } + } + + if ( text != NULL ) { + len = strlen( text ); + if (text[len-1] != '\n') { + i = 1; + } + } + + v2 = ch_malloc( len+i+sizeof("Referral:") ); + + if( text != NULL ) { + strcpy(v2, text); + if( i ) { + v2[len++] = '\n'; + } + } + strcpy( v2+len, "Referral:" ); + len += sizeof("Referral:"); + + for( i=0; ref[i].bv_val != NULL; i++ ) { + v2 = ch_realloc( v2, len + ref[i].bv_len + 1 ); + v2[len-1] = '\n'; + AC_MEMCPY(&v2[len], ref[i].bv_val, ref[i].bv_len ); + len += ref[i].bv_len; + if (ref[i].bv_val[ref[i].bv_len-1] != '/') { + ++len; + } + } + + v2[len-1] = '\0'; + return v2; +} + +ber_tag_t +slap_req2res( ber_tag_t tag ) +{ + switch( tag ) { + case LDAP_REQ_ADD: + case LDAP_REQ_BIND: + case LDAP_REQ_COMPARE: + case LDAP_REQ_EXTENDED: + case LDAP_REQ_MODIFY: + case LDAP_REQ_MODRDN: + tag++; + break; + + case LDAP_REQ_DELETE: + tag = LDAP_RES_DELETE; + break; + + case LDAP_REQ_ABANDON: + case LDAP_REQ_UNBIND: + tag = LBER_SEQUENCE; + break; + + case LDAP_REQ_SEARCH: + tag = LDAP_RES_SEARCH_RESULT; + break; + + default: + tag = LBER_SEQUENCE; + } + + return tag; +} + +/* + * SlapReply debugging enabled by USE_RS_ASSERT. + * + * Disabled by default, but compiled in (but still unused) when + * LDAP_TEST. #define USE_RS_ASSERT as nonzero to enable some + * assertions which check the SlapReply. USE_RS_ASSERT = 2 or higher + * check aggressively, currently some code fail these tests. + * + * Environment variable $NO_RS_ASSERT controls how USE_RS_ASSERT handles + * errors. > 0: ignore errors, 0: abort (the default), < 0: just warn. + * + * Wrap LDAP operation calls in macros SLAP_OP() & co from proto-slap.h + * to check the SlapReply. contrib/slapd-tools/wrap_slap_ops converts + * source code to use the macros. + */ +#if defined(LDAP_TEST) || (defined(USE_RS_ASSERT) && (USE_RS_ASSERT)) + +int rs_suppress_assert = 0; + +/* RS_ASSERT() helper function */ +void rs_assert_(const char*file, unsigned line, const char*fn, const char*cond) +{ + int no_assert = rs_suppress_assert, save_errno = errno; + const char *s; + + if ( no_assert >= 0 ) { + if ( no_assert == 0 && (s = getenv( "NO_RS_ASSERT" )) && *s ) { + no_assert = rs_suppress_assert = atoi( s ); + } + if ( no_assert > 0 ) { + errno = save_errno; + return; + } + } + +#ifdef rs_assert_ /* proto-slap.h #defined away the fn parameter */ + fprintf( stderr,"%s:%u: " "RS_ASSERT(%s) failed.\n", file,line,cond ); +#else + fprintf( stderr,"%s:%u: %s: RS_ASSERT(%s) failed.\n", file,line,fn,cond ); +#endif + fflush( stderr ); + + errno = save_errno; + /* $NO_RS_ASSERT > 0: ignore rs_asserts, 0: abort, < 0: just warn */ + if ( !no_assert /* from $NO_RS_ASSERT */ ) abort(); +} + +/* SlapReply is consistent */ +void +(rs_assert_ok)( const SlapReply *rs ) +{ + const slap_mask_t flags = rs->sr_flags; + + if ( flags & REP_ENTRY_MASK ) { + RS_ASSERT( !(flags & REP_ENTRY_MUSTRELEASE) + || !(flags & (REP_ENTRY_MASK ^ REP_ENTRY_MUSTRELEASE)) ); + RS_ASSERT( rs->sr_entry != NULL ); + RS_ASSERT( (1 << rs->sr_type) & + ((1 << REP_SEARCH) | (1 << REP_SEARCHREF) | + (1 << REP_RESULT) | (1 << REP_GLUE_RESULT)) ); + } +#if defined(USE_RS_ASSERT) && (USE_RS_ASSERT) > 1 /* TODO: Enable when safe */ + if ( (flags & (REP_MATCHED_MASK | REP_REF_MASK | REP_CTRLS_MASK)) ) { + RS_ASSERT( !(flags & REP_MATCHED_MASK) || rs->sr_matched ); + RS_ASSERT( !(flags & REP_CTRLS_MASK ) || rs->sr_ctrls ); + /* Note: LDAP_REFERRAL + !sr_ref is OK, becomes LDAP_NO_SUCH_OBJECT */ + } +#if (USE_RS_ASSERT) > 2 + if ( rs->sr_err == LDAP_SUCCESS ) { + RS_ASSERT( rs->sr_text == NULL ); + RS_ASSERT( rs->sr_matched == NULL ); + } +#endif +#endif +} + +/* Ready for calling a new backend operation */ +void +(rs_assert_ready)( const SlapReply *rs ) +{ + RS_ASSERT( !rs->sr_entry ); +#if defined(USE_RS_ASSERT) && (USE_RS_ASSERT) > 1 /* TODO: Enable when safe */ + RS_ASSERT( !rs->sr_text ); + RS_ASSERT( !rs->sr_ref ); + RS_ASSERT( !rs->sr_matched ); + RS_ASSERT( !rs->sr_ctrls ); + RS_ASSERT( !rs->sr_flags ); +#if (USE_RS_ASSERT) > 2 + RS_ASSERT( rs->sr_err == LDAP_SUCCESS ); +#endif +#else + RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MASK) ); +#endif +} + +/* Backend operation done */ +void +(rs_assert_done)( const SlapReply *rs ) +{ +#if defined(USE_RS_ASSERT) && (USE_RS_ASSERT) > 1 /* TODO: Enable when safe */ + RS_ASSERT( !(rs->sr_flags & ~(REP_ENTRY_MODIFIABLE|REP_NO_OPERATIONALS)) ); + rs_assert_ok( rs ); +#else + RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MUSTFLUSH) ); +#endif +} + +#endif /* LDAP_TEST || USE_RS_ASSERT */ + +/* Reset a used SlapReply whose contents has been flushed (freed/released) */ +void +(rs_reinit)( SlapReply *rs, slap_reply_t type ) +{ + rs_reinit( rs, type ); /* proto-slap.h macro */ +} + +/* Obey and clear rs->sr_flags & REP_ENTRY_MASK. Clear sr_entry if freed. */ +void +rs_flush_entry( Operation *op, SlapReply *rs, slap_overinst *on ) +{ + rs_assert_ok( rs ); + + if ( (rs->sr_flags & REP_ENTRY_MUSTFLUSH) && rs->sr_entry != NULL ) { + if ( !(rs->sr_flags & REP_ENTRY_MUSTRELEASE) ) { + entry_free( rs->sr_entry ); + } else if ( on != NULL ) { + overlay_entry_release_ov( op, rs->sr_entry, 0, on ); + } else { + be_entry_release_rw( op, rs->sr_entry, 0 ); + } + rs->sr_entry = NULL; + } + + rs->sr_flags &= ~REP_ENTRY_MASK; +} + +/* Set rs->sr_entry after obeying and clearing sr_flags & REP_ENTRY_MASK. */ +void +rs_replace_entry( Operation *op, SlapReply *rs, slap_overinst *on, Entry *e ) +{ + rs_flush_entry( op, rs, on ); + rs->sr_entry = e; +} + +/* + * Ensure rs->sr_entry is modifiable, by duplicating it if necessary. + * Obey sr_flags. Set REP_ENTRY_<MODIFIABLE, and MUSTBEFREED if duplicated>. + * Return nonzero if rs->sr_entry was replaced. + */ +int +rs_entry2modifiable( Operation *op, SlapReply *rs, slap_overinst *on ) +{ + if ( rs->sr_flags & REP_ENTRY_MODIFIABLE ) { + rs_assert_ok( rs ); + return 0; + } + rs_replace_entry( op, rs, on, entry_dup( rs->sr_entry )); + rs->sr_flags |= REP_ENTRY_MODIFIABLE | REP_ENTRY_MUSTBEFREED; + return 1; +} + +/* Check for any callbacks that want to be informed about being blocked + * on output. These callbacks are expected to leave the callback list + * unmodified. Their result is ignored. + */ +static void +slap_writewait_play( + Operation *op ) +{ + slap_callback *sc = op->o_callback; + + for ( ; sc; sc = sc->sc_next ) { + if ( sc->sc_writewait ) + sc->sc_writewait( op, sc ); + } +} + +static long send_ldap_ber( + Operation *op, + BerElement *ber ) +{ + Connection *conn = op->o_conn; + ber_len_t bytes; + long ret = 0; + char *close_reason; + int do_resume = 0; + + ber_get_option( ber, LBER_OPT_BER_BYTES_TO_WRITE, &bytes ); + + /* write only one pdu at a time - wait til it's our turn */ + ldap_pvt_thread_mutex_lock( &conn->c_write1_mutex ); + if (( op->o_abandon && !op->o_cancel ) || !connection_valid( conn ) || + conn->c_writers < 0 ) { + ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex ); + return 0; + } + + conn->c_writers++; + + while ( conn->c_writers > 0 && conn->c_writing ) { + ldap_pvt_thread_cond_wait( &conn->c_write1_cv, &conn->c_write1_mutex ); + } + + /* connection was closed under us */ + if ( conn->c_writers < 0 ) { + /* we're the last waiter, let the closer continue */ + if ( conn->c_writers == -1 ) + ldap_pvt_thread_cond_signal( &conn->c_write1_cv ); + conn->c_writers++; + ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex ); + return 0; + } + + /* Our turn */ + conn->c_writing = 1; + + /* write the pdu */ + while( 1 ) { + int err; + char ebuf[128]; + + if ( ber_flush2( conn->c_sb, ber, LBER_FLUSH_FREE_NEVER ) == 0 ) { + ret = bytes; + break; + } + + err = sock_errno(); + + /* + * we got an error. if it's ewouldblock, we need to + * wait on the socket being writable. otherwise, figure + * it's a hard error and return. + */ + + Debug( LDAP_DEBUG_CONNS, "ber_flush2 failed errno=%d reason=\"%s\"\n", + err, sock_errstr(err, ebuf, sizeof(ebuf)) ); + + if ( err != EWOULDBLOCK && err != EAGAIN ) { + close_reason = "connection lost on write"; +fail: + conn->c_writers--; + conn->c_writing = 0; + ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex ); + ldap_pvt_thread_mutex_lock( &conn->c_mutex ); + /* conn may have been reused by the time we get the mutex */ + if ( op->o_connid == conn->c_connid ) + connection_closing( conn, close_reason ); + ldap_pvt_thread_mutex_unlock( &conn->c_mutex ); + return -1; + } + + /* if writer is blocked and we're waiting for a pool pause, + * just drop this connection. + */ + if ( ldap_pvt_thread_pool_pausing( &connection_pool ) > 0 ) { + close_reason = "writer blocked and pool pause pending"; + goto fail; + } + + /* wait for socket to be write-ready */ + do_resume = 1; + conn->c_writewaiter = 1; + ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex ); + slap_writewait_play( op ); + err = slapd_wait_writer( conn->c_sd ); + conn->c_writewaiter = 0; + ldap_pvt_thread_mutex_lock( &conn->c_write1_mutex ); + /* 0 is timeout, so we close it. + * -1 is an error, close it. + */ + if ( err <= 0 ) { + if ( err == 0 ) + close_reason = "writetimeout"; + else + close_reason = "connection lost on writewait"; + goto fail; + } + + if ( conn->c_writers < 0 ) { + ret = 0; + break; + } + } + + conn->c_writing = 0; + if ( conn->c_writers < 0 ) { + /* shutting down, don't resume any ops */ + do_resume = 0; + conn->c_writers++; + if ( !conn->c_writers ) + ldap_pvt_thread_cond_signal( &conn->c_write1_cv ); + } else { + conn->c_writers--; + /* other writers are waiting, don't resume any ops */ + if ( conn->c_writers ) + do_resume = 0; + ldap_pvt_thread_cond_signal( &conn->c_write1_cv ); + } + ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex ); + + /* If there are no more writers, release a pending op */ + if ( do_resume ) + connection_write_resume( conn ); + + return ret; +} + +static int +send_ldap_control( BerElement *ber, LDAPControl *c ) +{ + int rc; + + assert( c != NULL ); + + rc = ber_printf( ber, "{s" /*}*/, c->ldctl_oid ); + + if( c->ldctl_iscritical ) { + rc = ber_printf( ber, "b", + (ber_int_t) c->ldctl_iscritical ) ; + if( rc == -1 ) return rc; + } + + if( c->ldctl_value.bv_val != NULL ) { + rc = ber_printf( ber, "O", &c->ldctl_value ); + if( rc == -1 ) return rc; + } + + rc = ber_printf( ber, /*{*/"N}" ); + if( rc == -1 ) return rc; + + return 0; +} + +static int +send_ldap_controls( Operation *o, BerElement *ber, LDAPControl **c ) +{ + int rc; + + if( c == NULL ) + return 0; + + rc = ber_printf( ber, "t{"/*}*/, LDAP_TAG_CONTROLS ); + if( rc == -1 ) return rc; + + for( ; *c != NULL; c++) { + rc = send_ldap_control( ber, *c ); + if( rc == -1 ) return rc; + } + +#ifdef SLAP_CONTROL_X_SORTEDRESULTS + /* this is a hack to avoid having to modify op->s_ctrls */ + if( o->o_sortedresults ) { + BerElementBuffer berbuf; + BerElement *sber = (BerElement *) &berbuf; + LDAPControl sorted; + BER_BVZERO( &sorted.ldctl_value ); + sorted.ldctl_oid = LDAP_CONTROL_SORTRESPONSE; + sorted.ldctl_iscritical = 0; + + ber_init2( sber, NULL, LBER_USE_DER ); + + ber_printf( sber, "{e}", LDAP_UNWILLING_TO_PERFORM ); + + if( ber_flatten2( sber, &sorted.ldctl_value, 0 ) == -1 ) { + return -1; + } + + (void) ber_free_buf( sber ); + + rc = send_ldap_control( ber, &sorted ); + if( rc == -1 ) return rc; + } +#endif + + rc = ber_printf( ber, /*{*/"N}" ); + + return rc; +} + +/* + * slap_response_play() + * + * plays the callback list; rationale: a callback can + * - remove itself from the list, by setting op->o_callback = NULL; + * malloc()'ed callbacks should free themselves from inside the + * sc_response() function. + * - replace itself with another (list of) callback(s), by setting + * op->o_callback = a new (list of) callback(s); in this case, it + * is the callback's responsibility to to append existing subsequent + * callbacks to the end of the list that is passed to the sc_response() + * function. + * - modify the list of subsequent callbacks by modifying the value + * of the sc_next field from inside the sc_response() function; this + * case does not require any handling from inside slap_response_play() + * + * To stop execution of the playlist, the sc_response() function must return + * a value different from SLAP_SC_CONTINUE. + * + * The same applies to slap_cleanup_play(); only, there is no means to stop + * execution of the playlist, since all cleanup functions must be called. + */ +static int +slap_response_play( + Operation *op, + SlapReply *rs ) +{ + int rc; + + slap_callback *sc = op->o_callback, **scp; + + rc = SLAP_CB_CONTINUE; + for ( scp = ≻ *scp; ) { + slap_callback *sc_next = (*scp)->sc_next, **sc_nextp = &(*scp)->sc_next; + + op->o_callback = *scp; + if ( op->o_callback->sc_response ) { + rc = op->o_callback->sc_response( op, rs ); + if ( op->o_callback == NULL ) { + /* the callback has been removed; + * repair the list */ + *scp = sc_next; + sc_nextp = scp; + + } else if ( op->o_callback != *scp ) { + /* a new callback has been inserted + * in place of the existing one; repair the list */ + *scp = op->o_callback; + sc_nextp = scp; + } + if ( rc != SLAP_CB_CONTINUE ) break; + } + scp = sc_nextp; + } + + op->o_callback = sc; + return rc; +} + +static int +slap_cleanup_play( + Operation *op, + SlapReply *rs ) +{ + slap_callback *sc = op->o_callback, **scp; + + for ( scp = ≻ *scp; ) { + slap_callback *sc_next = (*scp)->sc_next, **sc_nextp = &(*scp)->sc_next; + + op->o_callback = *scp; + if ( op->o_callback->sc_cleanup ) { + (void)op->o_callback->sc_cleanup( op, rs ); + if ( op->o_callback == NULL ) { + /* the callback has been removed; + * repair the list */ + *scp = sc_next; + sc_nextp = scp; + + } else if ( op->o_callback != *scp ) { + /* a new callback has been inserted + * after the existing one; repair the list */ + /* a new callback has been inserted + * in place of the existing one; repair the list */ + *scp = op->o_callback; + sc_nextp = scp; + } + /* don't care about the result; do all cleanup */ + } + scp = sc_nextp; + } + + op->o_callback = sc; + return LDAP_SUCCESS; +} + +static int +send_ldap_response( + Operation *op, + SlapReply *rs ) +{ + BerElementBuffer berbuf; + BerElement *ber = (BerElement *) &berbuf; + int rc = LDAP_SUCCESS; + long bytes; + + /* op was actually aborted, bypass everything if client didn't Cancel */ + if (( rs->sr_err == SLAPD_ABANDON ) && !op->o_cancel ) { + rc = SLAPD_ABANDON; + goto clean2; + } + + if ( op->o_callback ) { + rc = slap_response_play( op, rs ); + if ( rc != SLAP_CB_CONTINUE ) { + goto clean2; + } + } + + /* op completed, connection aborted, bypass sending response */ + if ( op->o_abandon && !op->o_cancel ) { + rc = SLAPD_ABANDON; + goto clean2; + } + +#ifdef LDAP_CONNECTIONLESS + if (op->o_conn && op->o_conn->c_is_udp) + ber = op->o_res_ber; + else +#endif + { + ber_init_w_nullc( ber, LBER_USE_DER ); + ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx ); + } + + rc = rs->sr_err; + if ( rc == SLAPD_ABANDON && op->o_cancel ) + rc = LDAP_CANCELLED; + + Debug( LDAP_DEBUG_TRACE, + "send_ldap_response: msgid=%d tag=%lu err=%d\n", + rs->sr_msgid, rs->sr_tag, rc ); + + if( rs->sr_ref ) { + Debug( LDAP_DEBUG_ARGS, "send_ldap_response: ref=\"%s\"\n", + rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL" ); + } + +#ifdef LDAP_CONNECTIONLESS + if (op->o_conn && op->o_conn->c_is_udp && + op->o_protocol == LDAP_VERSION2 ) + { + rc = ber_printf( ber, "t{ess" /*"}"*/, + rs->sr_tag, rc, + rs->sr_matched == NULL ? "" : rs->sr_matched, + rs->sr_text == NULL ? "" : rs->sr_text ); + } else +#endif + if ( rs->sr_type == REP_INTERMEDIATE ) { + rc = ber_printf( ber, "{it{" /*"}}"*/, + rs->sr_msgid, rs->sr_tag ); + + } else { + rc = ber_printf( ber, "{it{ess" /*"}}"*/, + rs->sr_msgid, rs->sr_tag, rc, + rs->sr_matched == NULL ? "" : rs->sr_matched, + rs->sr_text == NULL ? "" : rs->sr_text ); + } + + if( rc != -1 ) { + if ( rs->sr_ref != NULL ) { + assert( rs->sr_err == LDAP_REFERRAL ); + rc = ber_printf( ber, "t{W}", + LDAP_TAG_REFERRAL, rs->sr_ref ); + } else { + assert( rs->sr_err != LDAP_REFERRAL ); + } + } + + if( rc != -1 && rs->sr_type == REP_SASL && rs->sr_sasldata != NULL ) { + rc = ber_printf( ber, "tO", + LDAP_TAG_SASL_RES_CREDS, rs->sr_sasldata ); + } + + if( rc != -1 && + ( rs->sr_type == REP_EXTENDED || rs->sr_type == REP_INTERMEDIATE )) + { + if ( rs->sr_rspoid != NULL ) { + rc = ber_printf( ber, "ts", + rs->sr_type == REP_EXTENDED + ? LDAP_TAG_EXOP_RES_OID : LDAP_TAG_IM_RES_OID, + rs->sr_rspoid ); + } + if( rc != -1 && rs->sr_rspdata != NULL ) { + rc = ber_printf( ber, "tO", + rs->sr_type == REP_EXTENDED + ? LDAP_TAG_EXOP_RES_VALUE : LDAP_TAG_IM_RES_VALUE, + rs->sr_rspdata ); + } + } + + if( rc != -1 ) { + rc = ber_printf( ber, /*"{"*/ "N}" ); + } + + if( rc != -1 ) { + rc = send_ldap_controls( op, ber, rs->sr_ctrls ); + } + + if( rc != -1 ) { + rc = ber_printf( ber, /*"{"*/ "N}" ); + } + +#ifdef LDAP_CONNECTIONLESS + if( op->o_conn && op->o_conn->c_is_udp && op->o_protocol == LDAP_VERSION2 + && rc != -1 ) + { + rc = ber_printf( ber, /*"{"*/ "N}" ); + } +#endif + + if ( rc == -1 ) { + Debug( LDAP_DEBUG_ANY, "ber_printf failed\n" ); + +#ifdef LDAP_CONNECTIONLESS + if (!op->o_conn || op->o_conn->c_is_udp == 0) +#endif + { + ber_free_buf( ber ); + } + goto cleanup; + } + + /* send BER */ + bytes = send_ldap_ber( op, ber ); +#ifdef LDAP_CONNECTIONLESS + if (!op->o_conn || op->o_conn->c_is_udp == 0) +#endif + { + ber_free_buf( ber ); + } + + if ( bytes < 0 ) { + Debug( LDAP_DEBUG_ANY, + "send_ldap_response: ber write failed\n" ); + + goto cleanup; + } + + ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex ); + ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 ); + ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes ); + ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex ); + +cleanup:; + /* Tell caller that we did this for real, as opposed to being + * overridden by a callback + */ + rc = SLAP_CB_CONTINUE; + +clean2:; + if ( op->o_callback ) { + (void)slap_cleanup_play( op, rs ); + } + + if ( rs->sr_flags & REP_MATCHED_MUSTBEFREED ) { + rs->sr_flags ^= REP_MATCHED_MUSTBEFREED; /* paranoia */ + if ( rs->sr_matched ) { + free( (char *)rs->sr_matched ); + rs->sr_matched = NULL; + } + } + + if ( rs->sr_flags & REP_REF_MUSTBEFREED ) { + rs->sr_flags ^= REP_REF_MUSTBEFREED; /* paranoia */ + if ( rs->sr_ref ) { + ber_bvarray_free( rs->sr_ref ); + rs->sr_ref = NULL; + } + } + + if ( rs->sr_flags & REP_CTRLS_MUSTBEFREED ) { + rs->sr_flags ^= REP_CTRLS_MUSTBEFREED; /* paranoia */ + if ( rs->sr_ctrls ) { + slap_free_ctrls( op, rs->sr_ctrls ); + rs->sr_ctrls = NULL; + } + } + + return rc; +} + + +void +send_ldap_disconnect( Operation *op, SlapReply *rs ) +{ +#define LDAP_UNSOLICITED_ERROR(e) \ + ( (e) == LDAP_PROTOCOL_ERROR \ + || (e) == LDAP_STRONG_AUTH_REQUIRED \ + || (e) == LDAP_UNAVAILABLE ) + + Debug( LDAP_DEBUG_TRACE, + "send_ldap_disconnect %d:%s\n", + rs->sr_err, rs->sr_text ? rs->sr_text : "" ); + assert( LDAP_UNSOLICITED_ERROR( rs->sr_err ) ); + + /* TODO: Flush the entry if sr_type == REP_SEARCH/REP_SEARCHREF? */ + RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MASK) ); + rs->sr_flags &= ~REP_ENTRY_MASK; /* paranoia */ + + rs->sr_type = REP_EXTENDED; + rs->sr_rspdata = NULL; + + if ( op->o_protocol < LDAP_VERSION3 ) { + rs->sr_rspoid = NULL; + rs->sr_tag = slap_req2res( op->o_tag ); + rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0; + + } else { + rs->sr_rspoid = LDAP_NOTICE_DISCONNECT; + rs->sr_tag = LDAP_RES_EXTENDED; + rs->sr_msgid = LDAP_RES_UNSOLICITED; + } + + if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) { + ETIME_SETUP; + StatslogEtime( LDAP_DEBUG_STATS, + "%s DISCONNECT tag=%lu err=%d "ETIME_LOGFMT"text=%s\n", + op->o_log_prefix, rs->sr_tag, rs->sr_err, + rs->sr_text ? rs->sr_text : "" ); + } +} + +void +slap_send_ldap_result( Operation *op, SlapReply *rs ) +{ + char *tmp = NULL; + const char *otext = rs->sr_text; + BerVarray oref = rs->sr_ref; + + rs->sr_type = REP_RESULT; + + /* Propagate Abandons so that cleanup callbacks can be processed */ + if ( rs->sr_err == SLAPD_ABANDON || op->o_abandon ) + goto abandon; + + Debug( LDAP_DEBUG_TRACE, + "send_ldap_result: %s p=%d\n", + op->o_log_prefix, op->o_protocol ); + Debug( LDAP_DEBUG_ARGS, + "send_ldap_result: err=%d matched=\"%s\" text=\"%s\"\n", + rs->sr_err, rs->sr_matched ? rs->sr_matched : "", + rs->sr_text ? rs->sr_text : "" ); + if( rs->sr_ref ) { + Debug( LDAP_DEBUG_ARGS, + "send_ldap_result: referral=\"%s\"\n", + rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL" ); + } + assert( !LDAP_API_ERROR( rs->sr_err ) ); + assert( rs->sr_err != LDAP_PARTIAL_RESULTS ); + + if ( rs->sr_err == LDAP_REFERRAL ) { + if( op->o_domain_scope ) rs->sr_ref = NULL; + + if( rs->sr_ref == NULL ) { + rs->sr_err = LDAP_NO_SUCH_OBJECT; + } else if ( op->o_protocol < LDAP_VERSION3 ) { + rs->sr_err = LDAP_PARTIAL_RESULTS; + } + } + + if ( op->o_protocol < LDAP_VERSION3 ) { + tmp = v2ref( rs->sr_ref, rs->sr_text ); + rs->sr_text = tmp; + rs->sr_ref = NULL; + } + +abandon: + rs->sr_tag = slap_req2res( op->o_tag ); + rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0; + + if ( rs->sr_flags & REP_REF_MUSTBEFREED ) { + if ( rs->sr_ref == NULL ) { + rs->sr_flags ^= REP_REF_MUSTBEFREED; + ber_bvarray_free( oref ); + } + oref = NULL; /* send_ldap_response() will free rs->sr_ref if != NULL */ + } + + if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) { + ETIME_SETUP; + if ( op->o_tag == LDAP_REQ_SEARCH ) { + StatslogEtime( LDAP_DEBUG_STATS, + "%s SEARCH RESULT tag=%lu err=%d "ETIME_LOGFMT"nentries=%d text=%s\n", + op->o_log_prefix, rs->sr_tag, rs->sr_err, + rs->sr_nentries, rs->sr_text ? rs->sr_text : "" ); + } else { + StatslogEtime( LDAP_DEBUG_STATS, + "%s RESULT tag=%lu err=%d "ETIME_LOGFMT"text=%s\n", + op->o_log_prefix, rs->sr_tag, rs->sr_err, + rs->sr_text ? rs->sr_text : "" ); + } + } + + if( tmp != NULL ) ch_free(tmp); + rs->sr_text = otext; + rs->sr_ref = oref; +} + +void +send_ldap_sasl( Operation *op, SlapReply *rs ) +{ + Debug( LDAP_DEBUG_TRACE, "send_ldap_sasl: err=%d len=%ld\n", + rs->sr_err, + rs->sr_sasldata ? (long) rs->sr_sasldata->bv_len : -1 ); + + RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MASK) ); + rs->sr_flags &= ~REP_ENTRY_MASK; /* paranoia */ + + rs->sr_type = REP_SASL; + rs->sr_tag = slap_req2res( op->o_tag ); + rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0; + + if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) { + ETIME_SETUP; + StatslogEtime( LDAP_DEBUG_STATS, + "%s RESULT tag=%lu err=%d "ETIME_LOGFMT"text=%s\n", + op->o_log_prefix, rs->sr_tag, rs->sr_err, + rs->sr_text ? rs->sr_text : "" ); + } +} + +void +slap_send_ldap_extended( Operation *op, SlapReply *rs ) +{ + Debug( LDAP_DEBUG_TRACE, + "send_ldap_extended: err=%d oid=%s len=%ld\n", + rs->sr_err, + rs->sr_rspoid ? rs->sr_rspoid : "", + rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 ); + + RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MASK) ); + rs->sr_flags &= ~REP_ENTRY_MASK; /* paranoia */ + + rs->sr_type = REP_EXTENDED; + rs->sr_tag = slap_req2res( op->o_tag ); + rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0; + + if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) { + ETIME_SETUP; + StatslogEtime( LDAP_DEBUG_STATS, + "%s RESULT oid=%s err=%d "ETIME_LOGFMT"text=%s\n", + op->o_log_prefix, rs->sr_rspoid ? rs->sr_rspoid : "", + rs->sr_err, rs->sr_text ? rs->sr_text : "" ); + } +} + +void +slap_send_ldap_intermediate( Operation *op, SlapReply *rs ) +{ + Debug( LDAP_DEBUG_TRACE, + "send_ldap_intermediate: err=%d oid=%s len=%ld\n", + rs->sr_err, + rs->sr_rspoid ? rs->sr_rspoid : "", + rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 ); + + RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MASK) ); + rs->sr_flags &= ~REP_ENTRY_MASK; /* paranoia */ + + rs->sr_type = REP_INTERMEDIATE; + rs->sr_tag = LDAP_RES_INTERMEDIATE; + rs->sr_msgid = op->o_msgid; + if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) { + Debug( LDAP_DEBUG_STATS2, + "%s INTERMEDIATE oid=%s\n", + op->o_log_prefix, + rs->sr_rspoid ? rs->sr_rspoid : "" ); + } +} + +#define set_ldap_error( rs, err, text ) do { \ + (rs)->sr_err = err; (rs)->sr_text = text; } while(0) + +/* + * returns: + * + * LDAP_SUCCESS entry sent + * LDAP_OTHER entry not sent (other) + * LDAP_INSUFFICIENT_ACCESS entry not sent (ACL) + * LDAP_UNAVAILABLE entry not sent (connection closed) + * LDAP_SIZELIMIT_EXCEEDED entry not sent (caller must send sizelimitExceeded) + */ + +int +slap_send_search_entry( Operation *op, SlapReply *rs ) +{ + BerElementBuffer berbuf; + BerElement *ber = (BerElement *) &berbuf; + Attribute *a; + int i, j, rc = LDAP_UNAVAILABLE, bytes; + int userattrs; + AccessControlState acl_state = ACL_STATE_INIT; + int attrsonly; + AttributeDescription *ad_entry = slap_schema.si_ad_entry; + + /* a_flags: array of flags telling if the i-th element will be + * returned or filtered out + * e_flags: array of a_flags + */ + char **e_flags = NULL; + + rs->sr_type = REP_SEARCH; + + if ( op->ors_slimit >= 0 && rs->sr_nentries >= op->ors_slimit ) { + rc = LDAP_SIZELIMIT_EXCEEDED; + goto error_return; + } + + /* Every 64 entries, check for thread pool pause */ + if ( ( ( rs->sr_nentries & 0x3f ) == 0x3f ) && + ldap_pvt_thread_pool_pausing( &connection_pool ) > 0 ) + { + rc = LDAP_BUSY; + goto error_return; + } + + /* eventually will loop through generated operational attribute types + * currently implemented types include: + * entryDN, subschemaSubentry, and hasSubordinates */ + /* NOTE: moved before overlays callback circling because + * they may modify entry and other stuff in rs */ + /* check for special all operational attributes ("+") type */ + /* FIXME: maybe we could set this flag at the operation level; + * however, in principle the caller of send_search_entry() may + * change the attribute list at each call */ + rs->sr_attr_flags = slap_attr_flags( rs->sr_attrs ); + + rc = backend_operational( op, rs ); + if ( rc ) { + goto error_return; + } + + if ( op->o_callback ) { + rc = slap_response_play( op, rs ); + if ( rc != SLAP_CB_CONTINUE ) { + goto error_return; + } + } + + Debug( LDAP_DEBUG_TRACE, "=> send_search_entry: conn %lu dn=\"%s\"%s\n", + op->o_connid, rs->sr_entry->e_name.bv_val, + op->ors_attrsonly ? " (attrsOnly)" : "" ); + + attrsonly = op->ors_attrsonly; + + if ( !access_allowed( op, rs->sr_entry, ad_entry, NULL, ACL_READ, NULL )) { + Debug( LDAP_DEBUG_ACL, + "send_search_entry: conn %lu access to entry (%s) not allowed\n", + op->o_connid, rs->sr_entry->e_name.bv_val ); + + rc = LDAP_INSUFFICIENT_ACCESS; + goto error_return; + } + + if ( op->o_res_ber ) { + /* read back control or LDAP_CONNECTIONLESS */ + ber = op->o_res_ber; + } else { + struct berval bv; + + bv.bv_len = entry_flatsize( rs->sr_entry, 0 ); + bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx ); + + ber_init2( ber, &bv, LBER_USE_DER ); + ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx ); + } + +#ifdef LDAP_CONNECTIONLESS + if ( op->o_conn && op->o_conn->c_is_udp ) { + /* CONNECTIONLESS */ + if ( op->o_protocol == LDAP_VERSION2 ) { + rc = ber_printf(ber, "t{O{" /*}}*/, + LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name ); + } else { + rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid, + LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name ); + } + } else +#endif + if ( op->o_res_ber ) { + /* read back control */ + rc = ber_printf( ber, "t{O{" /*}}*/, + LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name ); + } else { + rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid, + LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name ); + } + + if ( rc == -1 ) { + Debug( LDAP_DEBUG_ANY, + "send_search_entry: conn %lu ber_printf failed\n", + op->o_connid ); + + if ( op->o_res_ber == NULL ) ber_free_buf( ber ); + set_ldap_error( rs, LDAP_OTHER, "encoding DN error" ); + rc = rs->sr_err; + goto error_return; + } + + /* check for special all user attributes ("*") type */ + userattrs = SLAP_USERATTRS( rs->sr_attr_flags ); + + /* create an array of arrays of flags. Each flag corresponds + * to particular value of attribute and equals 1 if value matches + * to ValuesReturnFilter or 0 if not + */ + if ( op->o_vrFilter != NULL ) { + int k = 0; + size_t size; + + for ( a = rs->sr_entry->e_attrs, i=0; a != NULL; a = a->a_next, i++ ) { + for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++; + } + + size = i * sizeof(char *) + k; + if ( size > 0 ) { + char *a_flags; + e_flags = slap_sl_calloc ( 1, i * sizeof(char *) + k, op->o_tmpmemctx ); + if( e_flags == NULL ) { + Debug( LDAP_DEBUG_ANY, + "send_search_entry: conn %lu slap_sl_calloc failed\n", + op->o_connid ); + ber_free( ber, 1 ); + + set_ldap_error( rs, LDAP_OTHER, "out of memory" ); + goto error_return; + } + a_flags = (char *)(e_flags + i); + memset( a_flags, 0, k ); + for ( a=rs->sr_entry->e_attrs, i=0; a != NULL; a=a->a_next, i++ ) { + for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ); + e_flags[i] = a_flags; + a_flags += j; + } + + rc = filter_matched_values(op, rs->sr_entry->e_attrs, &e_flags) ; + if ( rc == -1 ) { + Debug( LDAP_DEBUG_ANY, "send_search_entry: " + "conn %lu matched values filtering failed\n", + op->o_connid ); + if ( op->o_res_ber == NULL ) ber_free_buf( ber ); + set_ldap_error( rs, LDAP_OTHER, + "matched values filtering error" ); + rc = rs->sr_err; + goto error_return; + } + } + } + + for ( a = rs->sr_entry->e_attrs, j = 0; a != NULL; a = a->a_next, j++ ) { + AttributeDescription *desc = a->a_desc; + int finish = 0; + + if ( rs->sr_attrs == NULL ) { + /* all user attrs request, skip operational attributes */ + if( is_at_operational( desc->ad_type ) ) { + continue; + } + + } else { + /* specific attrs requested */ + if ( is_at_operational( desc->ad_type ) ) { + /* if not explicitly requested */ + if ( !ad_inlist( desc, rs->sr_attrs )) { + /* if not all op attrs requested, skip */ + if ( !SLAP_OPATTRS( rs->sr_attr_flags )) + continue; + /* if DSA-specific and replicating, skip */ + if ( op->o_sync != SLAP_CONTROL_NONE && + desc->ad_type->sat_usage == LDAP_SCHEMA_DSA_OPERATION ) + continue; + } + } else { + if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) { + continue; + } + } + } + + if ( attrsonly ) { + if ( ! access_allowed( op, rs->sr_entry, desc, NULL, + ACL_READ, &acl_state ) ) + { + Debug( LDAP_DEBUG_ACL, "send_search_entry: " + "conn %lu access to attribute %s not allowed\n", + op->o_connid, desc->ad_cname.bv_val ); + continue; + } + + if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) { + Debug( LDAP_DEBUG_ANY, + "send_search_entry: conn %lu ber_printf failed\n", + op->o_connid ); + + if ( op->o_res_ber == NULL ) ber_free_buf( ber ); + set_ldap_error( rs, LDAP_OTHER, + "encoding description error"); + rc = rs->sr_err; + goto error_return; + } + finish = 1; + + } else { + int first = 1; + for ( i = 0; a->a_nvals[i].bv_val != NULL; i++ ) { + if ( ! access_allowed( op, rs->sr_entry, + desc, &a->a_nvals[i], ACL_READ, &acl_state ) ) + { + Debug( LDAP_DEBUG_ACL, + "send_search_entry: conn %lu " + "access to attribute %s, value #%d not allowed\n", + op->o_connid, desc->ad_cname.bv_val, i ); + + continue; + } + + if ( op->o_vrFilter && e_flags[j][i] == 0 ){ + continue; + } + + if ( first ) { + first = 0; + finish = 1; + if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) { + Debug( LDAP_DEBUG_ANY, + "send_search_entry: conn %lu ber_printf failed\n", + op->o_connid ); + + if ( op->o_res_ber == NULL ) ber_free_buf( ber ); + set_ldap_error( rs, LDAP_OTHER, + "encoding description error"); + rc = rs->sr_err; + goto error_return; + } + } + if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) { + Debug( LDAP_DEBUG_ANY, + "send_search_entry: conn %lu " + "ber_printf failed.\n", op->o_connid ); + + if ( op->o_res_ber == NULL ) ber_free_buf( ber ); + set_ldap_error( rs, LDAP_OTHER, + "encoding values error" ); + rc = rs->sr_err; + goto error_return; + } + } + } + + if ( finish && ( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) { + Debug( LDAP_DEBUG_ANY, + "send_search_entry: conn %lu ber_printf failed\n", + op->o_connid ); + + if ( op->o_res_ber == NULL ) ber_free_buf( ber ); + set_ldap_error( rs, LDAP_OTHER, "encode end error" ); + rc = rs->sr_err; + goto error_return; + } + } + + /* NOTE: moved before overlays callback circling because + * they may modify entry and other stuff in rs */ + if ( rs->sr_operational_attrs != NULL && op->o_vrFilter != NULL ) { + int k = 0; + size_t size; + + for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) { + for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++; + } + + size = i * sizeof(char *) + k; + if ( size > 0 ) { + char *a_flags, **tmp; + + /* + * Reuse previous memory - we likely need less space + * for operational attributes + */ + tmp = slap_sl_realloc( e_flags, i * sizeof(char *) + k, + op->o_tmpmemctx ); + if ( tmp == NULL ) { + Debug( LDAP_DEBUG_ANY, + "send_search_entry: conn %lu " + "not enough memory " + "for matched values filtering\n", + op->o_connid ); + if ( op->o_res_ber == NULL ) ber_free_buf( ber ); + set_ldap_error( rs, LDAP_OTHER, + "not enough memory for matched values filtering" ); + goto error_return; + } + e_flags = tmp; + a_flags = (char *)(e_flags + i); + memset( a_flags, 0, k ); + for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) { + for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ); + e_flags[i] = a_flags; + a_flags += j; + } + rc = filter_matched_values(op, rs->sr_operational_attrs, &e_flags) ; + + if ( rc == -1 ) { + Debug( LDAP_DEBUG_ANY, + "send_search_entry: conn %lu " + "matched values filtering failed\n", + op->o_connid ); + if ( op->o_res_ber == NULL ) ber_free_buf( ber ); + set_ldap_error( rs, LDAP_OTHER, + "matched values filtering error" ); + rc = rs->sr_err; + goto error_return; + } + } + } + + for (a = rs->sr_operational_attrs, j=0; a != NULL; a = a->a_next, j++ ) { + AttributeDescription *desc = a->a_desc; + + if ( rs->sr_attrs == NULL ) { + /* all user attrs request, skip operational attributes */ + if( is_at_operational( desc->ad_type ) ) { + continue; + } + + } else { + /* specific attrs requested */ + if( is_at_operational( desc->ad_type ) ) { + if ( !SLAP_OPATTRS( rs->sr_attr_flags ) && + !ad_inlist( desc, rs->sr_attrs ) ) + { + continue; + } + /* if DSA-specific and replicating, skip */ + if ( op->o_sync != SLAP_CONTROL_NONE && + desc->ad_type->sat_usage == LDAP_SCHEMA_DSA_OPERATION ) + continue; + } else { + if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) { + continue; + } + } + } + + if ( ! access_allowed( op, rs->sr_entry, desc, NULL, + ACL_READ, &acl_state ) ) + { + Debug( LDAP_DEBUG_ACL, + "send_search_entry: conn %lu " + "access to attribute %s not allowed\n", + op->o_connid, desc->ad_cname.bv_val ); + + continue; + } + + rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname ); + if ( rc == -1 ) { + Debug( LDAP_DEBUG_ANY, + "send_search_entry: conn %lu " + "ber_printf failed\n", op->o_connid ); + + if ( op->o_res_ber == NULL ) ber_free_buf( ber ); + set_ldap_error( rs, LDAP_OTHER, + "encoding description error" ); + rc = rs->sr_err; + goto error_return; + } + + if ( ! attrsonly ) { + for ( i = 0; a->a_vals[i].bv_val != NULL; i++ ) { + if ( ! access_allowed( op, rs->sr_entry, + desc, &a->a_vals[i], ACL_READ, &acl_state ) ) + { + Debug( LDAP_DEBUG_ACL, + "send_search_entry: conn %lu " + "access to %s, value %d not allowed\n", + op->o_connid, desc->ad_cname.bv_val, i ); + + continue; + } + + if ( op->o_vrFilter && e_flags[j][i] == 0 ){ + continue; + } + + if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) { + Debug( LDAP_DEBUG_ANY, + "send_search_entry: conn %lu ber_printf failed\n", + op->o_connid ); + + if ( op->o_res_ber == NULL ) ber_free_buf( ber ); + set_ldap_error( rs, LDAP_OTHER, + "encoding values error" ); + rc = rs->sr_err; + goto error_return; + } + } + } + + if (( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) { + Debug( LDAP_DEBUG_ANY, + "send_search_entry: conn %lu ber_printf failed\n", + op->o_connid ); + + if ( op->o_res_ber == NULL ) ber_free_buf( ber ); + set_ldap_error( rs, LDAP_OTHER, "encode end error" ); + rc = rs->sr_err; + goto error_return; + } + } + + /* free e_flags */ + if ( e_flags ) { + slap_sl_free( e_flags, op->o_tmpmemctx ); + e_flags = NULL; + } + + rc = ber_printf( ber, /*{{*/ "}N}" ); + + if( rc != -1 ) { + rc = send_ldap_controls( op, ber, rs->sr_ctrls ); + } + + if( rc != -1 ) { +#ifdef LDAP_CONNECTIONLESS + if( op->o_conn && op->o_conn->c_is_udp ) { + if ( op->o_protocol != LDAP_VERSION2 ) { + rc = ber_printf( ber, /*{*/ "N}" ); + } + } else +#endif + if ( op->o_res_ber == NULL ) { + rc = ber_printf( ber, /*{*/ "N}" ); + } + } + + if ( rc == -1 ) { + Debug( LDAP_DEBUG_ANY, "ber_printf failed\n" ); + + if ( op->o_res_ber == NULL ) ber_free_buf( ber ); + set_ldap_error( rs, LDAP_OTHER, "encode entry end error" ); + rc = rs->sr_err; + goto error_return; + } + + Debug( LDAP_DEBUG_STATS2, "%s ENTRY dn=\"%s\"\n", + op->o_log_prefix, rs->sr_entry->e_nname.bv_val ); + + rs_flush_entry( op, rs, NULL ); + + if ( op->o_res_ber == NULL ) { + bytes = send_ldap_ber( op, ber ); + ber_free_buf( ber ); + + if ( bytes < 0 ) { + Debug( LDAP_DEBUG_ANY, + "send_search_entry: conn %lu ber write failed.\n", + op->o_connid ); + + rc = LDAP_UNAVAILABLE; + goto error_return; + } + rs->sr_nentries++; + + ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex ); + ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes ); + ldap_pvt_mp_add_ulong( op->o_counters->sc_entries, 1 ); + ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 ); + ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex ); + } + + Debug( LDAP_DEBUG_TRACE, + "<= send_search_entry: conn %lu exit.\n", op->o_connid ); + + rc = LDAP_SUCCESS; + +error_return:; + if ( op->o_callback ) { + (void)slap_cleanup_play( op, rs ); + } + + if ( e_flags ) { + slap_sl_free( e_flags, op->o_tmpmemctx ); + } + + /* FIXME: Can break if rs now contains an extended response */ + if ( rs->sr_operational_attrs ) { + attrs_free( rs->sr_operational_attrs ); + rs->sr_operational_attrs = NULL; + } + rs->sr_attr_flags = SLAP_ATTRS_UNDEFINED; + + if ( op->o_tag == LDAP_REQ_SEARCH && rs->sr_type == REP_SEARCH ) { + rs_flush_entry( op, rs, NULL ); + } else { + RS_ASSERT( (rs->sr_flags & REP_ENTRY_MASK) == 0 ); + } + + if ( rs->sr_flags & REP_CTRLS_MUSTBEFREED ) { + rs->sr_flags ^= REP_CTRLS_MUSTBEFREED; /* paranoia */ + if ( rs->sr_ctrls ) { + slap_free_ctrls( op, rs->sr_ctrls ); + rs->sr_ctrls = NULL; + } + } + + return( rc ); +} + +int +slap_send_search_reference( Operation *op, SlapReply *rs ) +{ + BerElementBuffer berbuf; + BerElement *ber = (BerElement *) &berbuf; + int rc = 0; + int bytes; + char *edn = rs->sr_entry ? rs->sr_entry->e_name.bv_val : "(null)"; + + AttributeDescription *ad_ref = slap_schema.si_ad_ref; + AttributeDescription *ad_entry = slap_schema.si_ad_entry; + + rs->sr_type = REP_SEARCHREF; + if ( op->o_callback ) { + rc = slap_response_play( op, rs ); + if ( rc != SLAP_CB_CONTINUE ) { + goto rel; + } + } + + Debug( LDAP_DEBUG_TRACE, + "=> send_search_reference: dn=\"%s\"\n", + edn ); + + if ( rs->sr_entry && ! access_allowed( op, rs->sr_entry, + ad_entry, NULL, ACL_READ, NULL ) ) + { + Debug( LDAP_DEBUG_ACL, + "send_search_reference: access to entry not allowed\n" ); + rc = 1; + goto rel; + } + + if ( rs->sr_entry && ! access_allowed( op, rs->sr_entry, + ad_ref, NULL, ACL_READ, NULL ) ) + { + Debug( LDAP_DEBUG_ACL, + "send_search_reference: access " + "to reference not allowed\n" ); + rc = 1; + goto rel; + } + + if( op->o_domain_scope ) { + Debug( LDAP_DEBUG_ANY, + "send_search_reference: domainScope control in (%s)\n", + edn ); + rc = 0; + goto rel; + } + + if( rs->sr_ref == NULL ) { + Debug( LDAP_DEBUG_ANY, + "send_search_reference: null ref in (%s)\n", + edn ); + rc = 1; + goto rel; + } + + if( op->o_protocol < LDAP_VERSION3 ) { + rc = 0; + /* save the references for the result */ + if( rs->sr_ref[0].bv_val != NULL ) { + if( value_add( &rs->sr_v2ref, rs->sr_ref ) ) + rc = LDAP_OTHER; + } + goto rel; + } + +#ifdef LDAP_CONNECTIONLESS + if( op->o_conn && op->o_conn->c_is_udp ) { + ber = op->o_res_ber; + } else +#endif + { + ber_init_w_nullc( ber, LBER_USE_DER ); + ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx ); + } + + rc = ber_printf( ber, "{it{W}" /*"}"*/ , op->o_msgid, + LDAP_RES_SEARCH_REFERENCE, rs->sr_ref ); + + if( rc != -1 ) { + rc = send_ldap_controls( op, ber, rs->sr_ctrls ); + } + + if( rc != -1 ) { + rc = ber_printf( ber, /*"{"*/ "N}" ); + } + + if ( rc == -1 ) { + Debug( LDAP_DEBUG_ANY, + "send_search_reference: ber_printf failed\n" ); + +#ifdef LDAP_CONNECTIONLESS + if (!op->o_conn || op->o_conn->c_is_udp == 0) +#endif + ber_free_buf( ber ); + set_ldap_error( rs, LDAP_OTHER, "encode DN error" ); + goto rel; + } + + rc = 0; + rs_flush_entry( op, rs, NULL ); + +#ifdef LDAP_CONNECTIONLESS + if (!op->o_conn || op->o_conn->c_is_udp == 0) { +#endif + bytes = send_ldap_ber( op, ber ); + ber_free_buf( ber ); + + if ( bytes < 0 ) { + rc = LDAP_UNAVAILABLE; + } else { + ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex ); + ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes ); + ldap_pvt_mp_add_ulong( op->o_counters->sc_refs, 1 ); + ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 ); + ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex ); + } +#ifdef LDAP_CONNECTIONLESS + } +#endif + if ( rs->sr_ref != NULL ) { + int r; + + for ( r = 0; !BER_BVISNULL( &rs->sr_ref[ r ] ); r++ ) { + Debug( LDAP_DEBUG_STATS2, "%s REF #%d \"%s\"\n", + op->o_log_prefix, r, rs->sr_ref[0].bv_val ); + } + + } else { + Debug( LDAP_DEBUG_STATS2, "%s REF \"(null)\"\n", + op->o_log_prefix ); + } + + Debug( LDAP_DEBUG_TRACE, "<= send_search_reference\n" ); + + if ( 0 ) { +rel: + rs_flush_entry( op, rs, NULL ); + } + + if ( op->o_callback ) { + (void)slap_cleanup_play( op, rs ); + } + + if ( rs->sr_flags & REP_CTRLS_MUSTBEFREED ) { + rs->sr_flags ^= REP_CTRLS_MUSTBEFREED; /* paranoia */ + if ( rs->sr_ctrls ) { + slap_free_ctrls( op, rs->sr_ctrls ); + rs->sr_ctrls = NULL; + } + } + + return rc; +} + +int +str2result( + char *s, + int *code, + char **matched, + char **info ) +{ + int rc; + char *c; + + *code = LDAP_SUCCESS; + *matched = NULL; + *info = NULL; + + if ( strncasecmp( s, "RESULT", STRLENOF( "RESULT" ) ) != 0 ) { + Debug( LDAP_DEBUG_ANY, "str2result (%s) expecting \"RESULT\"\n", + s ); + + return( -1 ); + } + + rc = 0; + while ( (s = strchr( s, '\n' )) != NULL ) { + *s++ = '\0'; + if ( *s == '\0' ) { + break; + } + if ( (c = strchr( s, ':' )) != NULL ) { + c++; + } + + if ( strncasecmp( s, "code", STRLENOF( "code" ) ) == 0 ) { + char *next = NULL; + long retcode; + + if ( c == NULL ) { + Debug( LDAP_DEBUG_ANY, "str2result (%s) missing value\n", + s ); + rc = -1; + continue; + } + + while ( isspace( (unsigned char) c[ 0 ] ) ) c++; + if ( c[ 0 ] == '\0' ) { + Debug( LDAP_DEBUG_ANY, "str2result (%s) missing or empty value\n", + s ); + rc = -1; + continue; + } + + retcode = strtol( c, &next, 10 ); + if ( next == NULL || next == c ) { + Debug( LDAP_DEBUG_ANY, "str2result (%s) unable to parse value\n", + s ); + rc = -1; + continue; + } + + while ( isspace( (unsigned char) next[ 0 ] ) && next[ 0 ] != '\n' ) + next++; + if ( next[ 0 ] != '\0' && next[ 0 ] != '\n' ) { + Debug( LDAP_DEBUG_ANY, "str2result (%s) extra cruft after value\n", + s ); + rc = -1; + continue; + } + + /* FIXME: what if it's larger than max int? */ + *code = (int)retcode; + + } else if ( strncasecmp( s, "matched", STRLENOF( "matched" ) ) == 0 ) { + if ( c != NULL ) { + *matched = c; + } + } else if ( strncasecmp( s, "info", STRLENOF( "info" ) ) == 0 ) { + if ( c != NULL ) { + *info = c; + } + } else { + Debug( LDAP_DEBUG_ANY, "str2result (%s) unknown\n", + s ); + + rc = -1; + } + } + + return( rc ); +} + +int slap_read_controls( + Operation *op, + SlapReply *rs, + Entry *e, + const struct berval *oid, + LDAPControl **ctrl ) +{ + int rc; + struct berval bv; + BerElementBuffer berbuf; + BerElement *ber = (BerElement *) &berbuf; + LDAPControl c; + Operation myop; + + Debug( LDAP_DEBUG_STATS, "%s slap_read_controls: (%s) %s\n", + op->o_log_prefix, oid->bv_val, e->e_dn ); + + rs->sr_entry = e; + rs->sr_attrs = ( oid == &slap_pre_read_bv ) ? + op->o_preread_attrs : op->o_postread_attrs; + + bv.bv_len = entry_flatsize( rs->sr_entry, 0 ); + bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx ); + + ber_init2( ber, &bv, LBER_USE_DER ); + ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx ); + + /* create new operation */ + myop = *op; + /* FIXME: o_bd needed for ACL */ + myop.o_bd = op->o_bd; + myop.o_res_ber = ber; + myop.o_callback = NULL; + myop.ors_slimit = 1; + myop.ors_attrsonly = 0; + + rc = slap_send_search_entry( &myop, rs ); + if( rc ) return rc; + + rc = ber_flatten2( ber, &c.ldctl_value, 0 ); + + if( rc == -1 ) return LDAP_OTHER; + + c.ldctl_oid = oid->bv_val; + c.ldctl_iscritical = 0; + + if ( *ctrl == NULL ) { + /* first try */ + *ctrl = (LDAPControl *) slap_sl_calloc( 1, sizeof(LDAPControl), NULL ); + } else { + /* retry: free previous try */ + slap_sl_free( (*ctrl)->ldctl_value.bv_val, op->o_tmpmemctx ); + } + + **ctrl = c; + return LDAP_SUCCESS; +} + +/* Map API errors to protocol errors... */ +int +slap_map_api2result( SlapReply *rs ) +{ + switch(rs->sr_err) { + case LDAP_SERVER_DOWN: + return LDAP_UNAVAILABLE; + case LDAP_LOCAL_ERROR: + return LDAP_OTHER; + case LDAP_ENCODING_ERROR: + case LDAP_DECODING_ERROR: + return LDAP_PROTOCOL_ERROR; + case LDAP_TIMEOUT: + return LDAP_UNAVAILABLE; + case LDAP_AUTH_UNKNOWN: + return LDAP_AUTH_METHOD_NOT_SUPPORTED; + case LDAP_FILTER_ERROR: + rs->sr_text = "Filter error"; + return LDAP_OTHER; + case LDAP_USER_CANCELLED: + rs->sr_text = "User cancelled"; + return LDAP_OTHER; + case LDAP_PARAM_ERROR: + return LDAP_PROTOCOL_ERROR; + case LDAP_NO_MEMORY: + return LDAP_OTHER; + case LDAP_CONNECT_ERROR: + return LDAP_UNAVAILABLE; + case LDAP_NOT_SUPPORTED: + return LDAP_UNWILLING_TO_PERFORM; + case LDAP_CONTROL_NOT_FOUND: + return LDAP_PROTOCOL_ERROR; + case LDAP_NO_RESULTS_RETURNED: + return LDAP_NO_SUCH_OBJECT; + case LDAP_MORE_RESULTS_TO_RETURN: + rs->sr_text = "More results to return"; + return LDAP_OTHER; + case LDAP_CLIENT_LOOP: + case LDAP_REFERRAL_LIMIT_EXCEEDED: + return LDAP_LOOP_DETECT; + default: + if ( LDAP_API_ERROR(rs->sr_err) ) return LDAP_OTHER; + return rs->sr_err; + } +} + + +slap_mask_t +slap_attr_flags( AttributeName *an ) +{ + slap_mask_t flags = SLAP_ATTRS_UNDEFINED; + + if ( an == NULL ) { + flags |= ( SLAP_OPATTRS_NO | SLAP_USERATTRS_YES ); + + } else { + flags |= an_find( an, slap_bv_all_operational_attrs ) + ? SLAP_OPATTRS_YES : SLAP_OPATTRS_NO; + flags |= an_find( an, slap_bv_all_user_attrs ) + ? SLAP_USERATTRS_YES : SLAP_USERATTRS_NO; + } + + return flags; +} |