mirror of
https://git.openldap.org/openldap/openldap.git
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649 lines
15 KiB
C
649 lines
15 KiB
C
/* $OpenLDAP$ */
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
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*
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* Copyright 1998-2006 The OpenLDAP Foundation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted only as authorized by the OpenLDAP
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* Public License.
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*
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* A copy of this license is available in the file LICENSE in the
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* top-level directory of the distribution or, alternatively, at
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* <http://www.OpenLDAP.org/license.html>.
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*/
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#include "portable.h"
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#include <stdio.h>
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#include <ac/stdlib.h>
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#include <ac/socket.h>
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#include <ac/string.h>
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#include <ac/ctype.h>
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#include <ac/time.h>
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#ifdef HAVE_LIMITS_H
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#include <limits.h>
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#endif
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#include "ldap-int.h"
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#include "ldap_defaults.h"
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#include "lutil.h"
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struct ldapoptions ldap_int_global_options =
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{ LDAP_UNINITIALIZED, LDAP_DEBUG_NONE };
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#define ATTR_NONE 0
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#define ATTR_BOOL 1
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#define ATTR_INT 2
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#define ATTR_KV 3
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#define ATTR_STRING 4
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#define ATTR_OPTION 5
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#define ATTR_SASL 6
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#define ATTR_TLS 7
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#define ATTR_OPT_TV 8
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#define ATTR_OPT_INT 9
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struct ol_keyvalue {
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const char * key;
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int value;
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};
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static const struct ol_keyvalue deref_kv[] = {
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{"never", LDAP_DEREF_NEVER},
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{"searching", LDAP_DEREF_SEARCHING},
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{"finding", LDAP_DEREF_FINDING},
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{"always", LDAP_DEREF_ALWAYS},
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{NULL, 0}
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};
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static const struct ol_attribute {
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int useronly;
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int type;
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const char * name;
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const void * data;
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size_t offset;
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} attrs[] = {
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{0, ATTR_OPT_TV, "TIMEOUT", NULL, LDAP_OPT_TIMEOUT},
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{0, ATTR_OPT_TV, "NETWORK_TIMEOUT", NULL, LDAP_OPT_NETWORK_TIMEOUT},
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{0, ATTR_OPT_INT, "VERSION", NULL, LDAP_OPT_PROTOCOL_VERSION},
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{0, ATTR_KV, "DEREF", deref_kv, /* or &deref_kv[0] */
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offsetof(struct ldapoptions, ldo_deref)},
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{0, ATTR_INT, "SIZELIMIT", NULL,
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offsetof(struct ldapoptions, ldo_sizelimit)},
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{0, ATTR_INT, "TIMELIMIT", NULL,
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offsetof(struct ldapoptions, ldo_timelimit)},
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{1, ATTR_STRING, "BINDDN", NULL,
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offsetof(struct ldapoptions, ldo_defbinddn)},
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{0, ATTR_STRING, "BASE", NULL,
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offsetof(struct ldapoptions, ldo_defbase)},
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{0, ATTR_INT, "PORT", NULL, /* deprecated */
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offsetof(struct ldapoptions, ldo_defport)},
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{0, ATTR_OPTION, "HOST", NULL, LDAP_OPT_HOST_NAME}, /* deprecated */
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{0, ATTR_OPTION, "URI", NULL, LDAP_OPT_URI}, /* replaces HOST/PORT */
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{0, ATTR_BOOL, "REFERRALS", NULL, LDAP_BOOL_REFERRALS},
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#if 0
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/* This should only be allowed via ldap_set_option(3) */
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{0, ATTR_BOOL, "RESTART", NULL, LDAP_BOOL_RESTART},
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#endif
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#ifdef HAVE_CYRUS_SASL
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{0, ATTR_STRING, "SASL_MECH", NULL,
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offsetof(struct ldapoptions, ldo_def_sasl_mech)},
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{0, ATTR_STRING, "SASL_REALM", NULL,
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offsetof(struct ldapoptions, ldo_def_sasl_realm)},
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{1, ATTR_STRING, "SASL_AUTHCID", NULL,
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offsetof(struct ldapoptions, ldo_def_sasl_authcid)},
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{1, ATTR_STRING, "SASL_AUTHZID", NULL,
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offsetof(struct ldapoptions, ldo_def_sasl_authzid)},
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{0, ATTR_SASL, "SASL_SECPROPS", NULL, LDAP_OPT_X_SASL_SECPROPS},
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#endif
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#ifdef HAVE_TLS
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{1, ATTR_TLS, "TLS_CERT", NULL, LDAP_OPT_X_TLS_CERTFILE},
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{1, ATTR_TLS, "TLS_KEY", NULL, LDAP_OPT_X_TLS_KEYFILE},
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{0, ATTR_TLS, "TLS_CACERT", NULL, LDAP_OPT_X_TLS_CACERTFILE},
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{0, ATTR_TLS, "TLS_CACERTDIR", NULL, LDAP_OPT_X_TLS_CACERTDIR},
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{0, ATTR_TLS, "TLS_REQCERT", NULL, LDAP_OPT_X_TLS_REQUIRE_CERT},
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{0, ATTR_TLS, "TLS_RANDFILE", NULL, LDAP_OPT_X_TLS_RANDOM_FILE},
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{0, ATTR_TLS, "TLS_CIPHER_SUITE", NULL, LDAP_OPT_X_TLS_CIPHER_SUITE},
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#ifdef HAVE_OPENSSL_CRL
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{0, ATTR_TLS, "TLS_CRLCHECK", NULL, LDAP_OPT_X_TLS_CRLCHECK},
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#endif
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#endif
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{0, ATTR_NONE, NULL, NULL, 0}
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};
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#define MAX_LDAP_ATTR_LEN sizeof("TLS_CIPHER_SUITE")
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#define MAX_LDAP_ENV_PREFIX_LEN 8
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static void openldap_ldap_init_w_conf(
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const char *file, int userconf )
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{
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char linebuf[ AC_LINE_MAX ];
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FILE *fp;
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int i;
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char *cmd, *opt;
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char *start, *end;
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struct ldapoptions *gopts;
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if ((gopts = LDAP_INT_GLOBAL_OPT()) == NULL) {
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return; /* Could not allocate mem for global options */
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}
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if (file == NULL) {
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/* no file name */
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return;
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}
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Debug(LDAP_DEBUG_TRACE, "ldap_init: trying %s\n", file, 0, 0);
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fp = fopen(file, "r");
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if(fp == NULL) {
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/* could not open file */
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return;
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}
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Debug(LDAP_DEBUG_TRACE, "ldap_init: using %s\n", file, 0, 0);
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while((start = fgets(linebuf, sizeof(linebuf), fp)) != NULL) {
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/* skip lines starting with '#' */
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if(*start == '#') continue;
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/* trim leading white space */
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while((*start != '\0') && isspace((unsigned char) *start))
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start++;
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/* anything left? */
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if(*start == '\0') continue;
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/* trim trailing white space */
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end = &start[strlen(start)-1];
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while(isspace((unsigned char)*end)) end--;
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end[1] = '\0';
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/* anything left? */
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if(*start == '\0') continue;
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/* parse the command */
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cmd=start;
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while((*start != '\0') && !isspace((unsigned char)*start)) {
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start++;
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}
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if(*start == '\0') {
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/* command has no argument */
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continue;
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}
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*start++ = '\0';
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/* we must have some whitespace to skip */
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while(isspace((unsigned char)*start)) start++;
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opt = start;
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for(i=0; attrs[i].type != ATTR_NONE; i++) {
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void *p;
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if( !userconf && attrs[i].useronly ) {
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continue;
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}
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if(strcasecmp(cmd, attrs[i].name) != 0) {
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continue;
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}
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switch(attrs[i].type) {
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case ATTR_BOOL:
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if((strcasecmp(opt, "on") == 0)
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|| (strcasecmp(opt, "yes") == 0)
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|| (strcasecmp(opt, "true") == 0))
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{
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LDAP_BOOL_SET(gopts, attrs[i].offset);
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} else {
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LDAP_BOOL_CLR(gopts, attrs[i].offset);
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}
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break;
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case ATTR_INT: {
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char *next;
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long l;
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p = &((char *) gopts)[attrs[i].offset];
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l = strtol( opt, &next, 10 );
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if ( next != opt && next[ 0 ] == '\0' ) {
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* (int*) p = l;
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}
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} break;
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case ATTR_KV: {
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const struct ol_keyvalue *kv;
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for(kv = attrs[i].data;
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kv->key != NULL;
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kv++) {
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if(strcasecmp(opt, kv->key) == 0) {
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p = &((char *) gopts)[attrs[i].offset];
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* (int*) p = kv->value;
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break;
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}
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}
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} break;
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case ATTR_STRING:
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p = &((char *) gopts)[attrs[i].offset];
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if (* (char**) p != NULL) LDAP_FREE(* (char**) p);
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* (char**) p = LDAP_STRDUP(opt);
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break;
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case ATTR_OPTION:
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ldap_set_option( NULL, attrs[i].offset, opt );
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break;
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case ATTR_SASL:
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#ifdef HAVE_CYRUS_SASL
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ldap_int_sasl_config( gopts, attrs[i].offset, opt );
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#endif
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break;
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case ATTR_TLS:
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#ifdef HAVE_TLS
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ldap_int_tls_config( NULL, attrs[i].offset, opt );
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#endif
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break;
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case ATTR_OPT_TV: {
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struct timeval tv;
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char *next;
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tv.tv_sec = -1;
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tv.tv_usec = 0;
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tv.tv_sec = strtol( opt, &next, 10 );
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if ( next != opt && next[ 0 ] == '\0' && tv.tv_sec > 0 ) {
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(void)ldap_set_option( NULL, attrs[i].offset, (const void *)&tv );
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}
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} break;
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case ATTR_OPT_INT: {
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long l;
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char *next;
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l = strtol( opt, &next, 10 );
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if ( next != opt && next[ 0 ] == '\0' && l > 0 && (long)((int)l) == l ) {
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int v = (int)l;
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(void)ldap_set_option( NULL, attrs[i].offset, (const void *)&v );
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}
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} break;
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}
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break;
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}
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}
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fclose(fp);
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}
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static void openldap_ldap_init_w_sysconf(const char *file)
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{
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openldap_ldap_init_w_conf( file, 0 );
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}
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static void openldap_ldap_init_w_userconf(const char *file)
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{
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char *home;
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char *path = NULL;
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if (file == NULL) {
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/* no file name */
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return;
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}
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home = getenv("HOME");
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if (home != NULL) {
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Debug(LDAP_DEBUG_TRACE, "ldap_init: HOME env is %s\n",
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home, 0, 0);
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path = LDAP_MALLOC(strlen(home) + strlen(file) + sizeof( LDAP_DIRSEP "."));
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} else {
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Debug(LDAP_DEBUG_TRACE, "ldap_init: HOME env is NULL\n",
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0, 0, 0);
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}
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if(home != NULL && path != NULL) {
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/* we assume UNIX path syntax is used... */
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/* try ~/file */
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sprintf(path, "%s" LDAP_DIRSEP "%s", home, file);
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openldap_ldap_init_w_conf(path, 1);
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/* try ~/.file */
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sprintf(path, "%s" LDAP_DIRSEP ".%s", home, file);
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openldap_ldap_init_w_conf(path, 1);
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}
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if(path != NULL) {
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LDAP_FREE(path);
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}
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/* try file */
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openldap_ldap_init_w_conf(file, 1);
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}
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static void openldap_ldap_init_w_env(
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struct ldapoptions *gopts,
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const char *prefix)
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{
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char buf[MAX_LDAP_ATTR_LEN+MAX_LDAP_ENV_PREFIX_LEN];
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int len;
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int i;
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void *p;
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char *value;
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if (prefix == NULL) {
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prefix = LDAP_ENV_PREFIX;
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}
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strncpy(buf, prefix, MAX_LDAP_ENV_PREFIX_LEN);
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buf[MAX_LDAP_ENV_PREFIX_LEN] = '\0';
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len = strlen(buf);
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for(i=0; attrs[i].type != ATTR_NONE; i++) {
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strcpy(&buf[len], attrs[i].name);
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value = getenv(buf);
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if(value == NULL) {
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continue;
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}
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switch(attrs[i].type) {
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case ATTR_BOOL:
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if((strcasecmp(value, "on") == 0)
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|| (strcasecmp(value, "yes") == 0)
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|| (strcasecmp(value, "true") == 0))
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{
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LDAP_BOOL_SET(gopts, attrs[i].offset);
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} else {
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LDAP_BOOL_CLR(gopts, attrs[i].offset);
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}
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break;
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case ATTR_INT:
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p = &((char *) gopts)[attrs[i].offset];
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* (int*) p = atoi(value);
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break;
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case ATTR_KV: {
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const struct ol_keyvalue *kv;
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for(kv = attrs[i].data;
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kv->key != NULL;
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kv++) {
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if(strcasecmp(value, kv->key) == 0) {
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p = &((char *) gopts)[attrs[i].offset];
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* (int*) p = kv->value;
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break;
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}
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}
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} break;
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case ATTR_STRING:
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p = &((char *) gopts)[attrs[i].offset];
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if (* (char**) p != NULL) LDAP_FREE(* (char**) p);
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if (*value == '\0') {
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* (char**) p = NULL;
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} else {
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* (char**) p = LDAP_STRDUP(value);
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}
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break;
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case ATTR_OPTION:
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ldap_set_option( NULL, attrs[i].offset, value );
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break;
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case ATTR_SASL:
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#ifdef HAVE_CYRUS_SASL
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ldap_int_sasl_config( gopts, attrs[i].offset, value );
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#endif
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break;
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case ATTR_TLS:
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#ifdef HAVE_TLS
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ldap_int_tls_config( NULL, attrs[i].offset, value );
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#endif
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break;
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}
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}
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}
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#if defined(__GNUC__)
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/* Declare this function as a destructor so that it will automatically be
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* invoked either at program exit (if libldap is a static library) or
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* at unload time (if libldap is a dynamic library).
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*
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* Sorry, don't know how to handle this for non-GCC environments.
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*/
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static void ldap_int_destroy_global_options(void)
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__attribute__ ((destructor));
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#endif
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static void
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ldap_int_destroy_global_options(void)
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{
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struct ldapoptions *gopts = LDAP_INT_GLOBAL_OPT();
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if ( gopts == NULL )
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return;
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gopts->ldo_valid = LDAP_UNINITIALIZED;
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if ( gopts->ldo_defludp ) {
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ldap_free_urllist( gopts->ldo_defludp );
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gopts->ldo_defludp = NULL;
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}
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#if defined(HAVE_WINSOCK) || defined(HAVE_WINSOCK2)
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WSACleanup( );
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#endif
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#if defined(LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND) \
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|| defined(HAVE_TLS) || defined(HAVE_CYRUS_SASL)
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if ( ldap_int_hostname ) {
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LDAP_FREE( ldap_int_hostname );
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ldap_int_hostname = NULL;
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}
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#endif
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#ifdef HAVE_CYRUS_SASL
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if ( gopts->ldo_def_sasl_authcid ) {
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LDAP_FREE( gopts->ldo_def_sasl_authcid );
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gopts->ldo_def_sasl_authcid = NULL;
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}
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#endif
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#ifdef HAVE_TLS
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ldap_int_tls_destroy( gopts );
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#endif
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}
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/*
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* Initialize the global options structure with default values.
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*/
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void ldap_int_initialize_global_options( struct ldapoptions *gopts, int *dbglvl )
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{
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if (dbglvl)
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gopts->ldo_debug = *dbglvl;
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else
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gopts->ldo_debug = 0;
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gopts->ldo_version = LDAP_VERSION2;
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gopts->ldo_deref = LDAP_DEREF_NEVER;
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gopts->ldo_timelimit = LDAP_NO_LIMIT;
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gopts->ldo_sizelimit = LDAP_NO_LIMIT;
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gopts->ldo_tm_api = (struct timeval *)NULL;
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gopts->ldo_tm_net = (struct timeval *)NULL;
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/* ldo_defludp will be freed by the termination handler
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*/
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ldap_url_parselist(&gopts->ldo_defludp, "ldap://localhost/");
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gopts->ldo_defport = LDAP_PORT;
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#if !defined(__GNUC__) && !defined(PIC)
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/* Do this only for a static library, and only if we can't
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* arrange for it to be executed as a library destructor
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*/
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atexit(ldap_int_destroy_global_options);
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#endif
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gopts->ldo_refhoplimit = LDAP_DEFAULT_REFHOPLIMIT;
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gopts->ldo_rebind_proc = NULL;
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gopts->ldo_rebind_params = NULL;
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LDAP_BOOL_ZERO(gopts);
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LDAP_BOOL_SET(gopts, LDAP_BOOL_REFERRALS);
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#ifdef LDAP_CONNECTIONLESS
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gopts->ldo_peer = NULL;
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gopts->ldo_cldapdn = NULL;
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gopts->ldo_is_udp = 0;
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#endif
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#ifdef HAVE_CYRUS_SASL
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|
gopts->ldo_def_sasl_mech = NULL;
|
|
gopts->ldo_def_sasl_realm = NULL;
|
|
gopts->ldo_def_sasl_authcid = NULL;
|
|
gopts->ldo_def_sasl_authzid = NULL;
|
|
|
|
memset( &gopts->ldo_sasl_secprops,
|
|
'\0', sizeof(gopts->ldo_sasl_secprops) );
|
|
|
|
gopts->ldo_sasl_secprops.max_ssf = INT_MAX;
|
|
gopts->ldo_sasl_secprops.maxbufsize = SASL_MAX_BUFF_SIZE;
|
|
gopts->ldo_sasl_secprops.security_flags =
|
|
SASL_SEC_NOPLAINTEXT | SASL_SEC_NOANONYMOUS;
|
|
#endif
|
|
|
|
#ifdef HAVE_TLS
|
|
gopts->ldo_tls_connect_cb = NULL;
|
|
gopts->ldo_tls_connect_arg = NULL;
|
|
#endif
|
|
|
|
gopts->ldo_valid = LDAP_INITIALIZED;
|
|
return;
|
|
}
|
|
|
|
#if defined(LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND) \
|
|
|| defined(HAVE_TLS) || defined(HAVE_CYRUS_SASL)
|
|
char * ldap_int_hostname = NULL;
|
|
#endif
|
|
|
|
void ldap_int_initialize( struct ldapoptions *gopts, int *dbglvl )
|
|
{
|
|
if ( gopts->ldo_valid == LDAP_INITIALIZED ) {
|
|
return;
|
|
}
|
|
|
|
ldap_int_error_init();
|
|
|
|
ldap_int_utils_init();
|
|
|
|
#ifdef HAVE_WINSOCK2
|
|
{ WORD wVersionRequested;
|
|
WSADATA wsaData;
|
|
|
|
wVersionRequested = MAKEWORD( 2, 0 );
|
|
if ( WSAStartup( wVersionRequested, &wsaData ) != 0 ) {
|
|
/* Tell the user that we couldn't find a usable */
|
|
/* WinSock DLL. */
|
|
return;
|
|
}
|
|
|
|
/* Confirm that the WinSock DLL supports 2.0.*/
|
|
/* Note that if the DLL supports versions greater */
|
|
/* than 2.0 in addition to 2.0, it will still return */
|
|
/* 2.0 in wVersion since that is the version we */
|
|
/* requested. */
|
|
|
|
if ( LOBYTE( wsaData.wVersion ) != 2 ||
|
|
HIBYTE( wsaData.wVersion ) != 0 )
|
|
{
|
|
/* Tell the user that we couldn't find a usable */
|
|
/* WinSock DLL. */
|
|
WSACleanup( );
|
|
return;
|
|
}
|
|
} /* The WinSock DLL is acceptable. Proceed. */
|
|
#elif HAVE_WINSOCK
|
|
{ WSADATA wsaData;
|
|
if ( WSAStartup( 0x0101, &wsaData ) != 0 ) {
|
|
return;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#if defined(LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND) \
|
|
|| defined(HAVE_TLS) || defined(HAVE_CYRUS_SASL)
|
|
{
|
|
char *name = ldap_int_hostname;
|
|
|
|
ldap_int_hostname = ldap_pvt_get_fqdn( name );
|
|
|
|
if ( name != NULL && name != ldap_int_hostname ) {
|
|
LDAP_FREE( name );
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#ifndef HAVE_POLL
|
|
if ( ldap_int_tblsize == 0 ) ldap_int_ip_init();
|
|
#endif
|
|
|
|
ldap_int_initialize_global_options(gopts, NULL);
|
|
|
|
if( getenv("LDAPNOINIT") != NULL ) {
|
|
return;
|
|
}
|
|
|
|
#ifdef HAVE_CYRUS_SASL
|
|
{
|
|
/* set authentication identity to current user name */
|
|
char *user = getenv("USER");
|
|
|
|
if( user == NULL ) user = getenv("USERNAME");
|
|
if( user == NULL ) user = getenv("LOGNAME");
|
|
|
|
if( user != NULL ) {
|
|
gopts->ldo_def_sasl_authcid = LDAP_STRDUP( user );
|
|
}
|
|
}
|
|
#endif
|
|
|
|
openldap_ldap_init_w_sysconf(LDAP_CONF_FILE);
|
|
openldap_ldap_init_w_userconf(LDAP_USERRC_FILE);
|
|
|
|
{
|
|
char *altfile = getenv(LDAP_ENV_PREFIX "CONF");
|
|
|
|
if( altfile != NULL ) {
|
|
Debug(LDAP_DEBUG_TRACE, "ldap_init: %s env is %s\n",
|
|
LDAP_ENV_PREFIX "CONF", altfile, 0);
|
|
openldap_ldap_init_w_sysconf( altfile );
|
|
}
|
|
else
|
|
Debug(LDAP_DEBUG_TRACE, "ldap_init: %s env is NULL\n",
|
|
LDAP_ENV_PREFIX "CONF", 0, 0);
|
|
}
|
|
|
|
{
|
|
char *altfile = getenv(LDAP_ENV_PREFIX "RC");
|
|
|
|
if( altfile != NULL ) {
|
|
Debug(LDAP_DEBUG_TRACE, "ldap_init: %s env is %s\n",
|
|
LDAP_ENV_PREFIX "RC", altfile, 0);
|
|
openldap_ldap_init_w_userconf( altfile );
|
|
}
|
|
else
|
|
Debug(LDAP_DEBUG_TRACE, "ldap_init: %s env is NULL\n",
|
|
LDAP_ENV_PREFIX "RC", 0, 0);
|
|
}
|
|
|
|
openldap_ldap_init_w_env(gopts, NULL);
|
|
}
|