/* $NetBSD: init.c,v 1.1.1.6.6.1 2019/08/10 06:17:14 martin Exp $ */ /* $OpenLDAP$ */ /* This work is part of OpenLDAP Software . * * Copyright 1998-2019 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 * . */ #include __RCSID("$NetBSD: init.c,v 1.1.1.6.6.1 2019/08/10 06:17:14 martin Exp $"); #include "portable.h" #include #include #ifdef HAVE_GETEUID #include #endif #include #include #include #include #ifdef HAVE_LIMITS_H #include #endif #include "ldap-int.h" #include "ldap_defaults.h" #include "lutil.h" struct ldapoptions ldap_int_global_options = { LDAP_UNINITIALIZED, LDAP_DEBUG_NONE LDAP_LDO_NULLARG LDAP_LDO_CONNECTIONLESS_NULLARG LDAP_LDO_TLS_NULLARG LDAP_LDO_SASL_NULLARG LDAP_LDO_GSSAPI_NULLARG LDAP_LDO_MUTEX_NULLARG }; #define ATTR_NONE 0 #define ATTR_BOOL 1 #define ATTR_INT 2 #define ATTR_KV 3 #define ATTR_STRING 4 #define ATTR_OPTION 5 #define ATTR_SASL 6 #define ATTR_TLS 7 #define ATTR_OPT_TV 8 #define ATTR_OPT_INT 9 #define ATTR_GSSAPI 10 struct ol_keyvalue { const char * key; int value; }; static const struct ol_keyvalue deref_kv[] = { {"never", LDAP_DEREF_NEVER}, {"searching", LDAP_DEREF_SEARCHING}, {"finding", LDAP_DEREF_FINDING}, {"always", LDAP_DEREF_ALWAYS}, {NULL, 0} }; static const struct ol_attribute { int useronly; int type; const char * name; const void * data; size_t offset; } attrs[] = { {0, ATTR_OPT_TV, "TIMEOUT", NULL, LDAP_OPT_TIMEOUT}, {0, ATTR_OPT_TV, "NETWORK_TIMEOUT", NULL, LDAP_OPT_NETWORK_TIMEOUT}, {0, ATTR_OPT_INT, "VERSION", NULL, LDAP_OPT_PROTOCOL_VERSION}, {0, ATTR_KV, "DEREF", deref_kv, /* or &deref_kv[0] */ offsetof(struct ldapoptions, ldo_deref)}, {0, ATTR_INT, "SIZELIMIT", NULL, offsetof(struct ldapoptions, ldo_sizelimit)}, {0, ATTR_INT, "TIMELIMIT", NULL, offsetof(struct ldapoptions, ldo_timelimit)}, {1, ATTR_STRING, "BINDDN", NULL, offsetof(struct ldapoptions, ldo_defbinddn)}, {0, ATTR_STRING, "BASE", NULL, offsetof(struct ldapoptions, ldo_defbase)}, {0, ATTR_INT, "PORT", NULL, /* deprecated */ offsetof(struct ldapoptions, ldo_defport)}, {0, ATTR_OPTION, "HOST", NULL, LDAP_OPT_HOST_NAME}, /* deprecated */ {0, ATTR_OPTION, "URI", NULL, LDAP_OPT_URI}, /* replaces HOST/PORT */ {0, ATTR_BOOL, "REFERRALS", NULL, LDAP_BOOL_REFERRALS}, #if 0 /* This should only be allowed via ldap_set_option(3) */ {0, ATTR_BOOL, "RESTART", NULL, LDAP_BOOL_RESTART}, #endif #ifdef HAVE_CYRUS_SASL {0, ATTR_STRING, "SASL_MECH", NULL, offsetof(struct ldapoptions, ldo_def_sasl_mech)}, {0, ATTR_STRING, "SASL_REALM", NULL, offsetof(struct ldapoptions, ldo_def_sasl_realm)}, {1, ATTR_STRING, "SASL_AUTHCID", NULL, offsetof(struct ldapoptions, ldo_def_sasl_authcid)}, {1, ATTR_STRING, "SASL_AUTHZID", NULL, offsetof(struct ldapoptions, ldo_def_sasl_authzid)}, {0, ATTR_SASL, "SASL_SECPROPS", NULL, LDAP_OPT_X_SASL_SECPROPS}, {0, ATTR_BOOL, "SASL_NOCANON", NULL, LDAP_BOOL_SASL_NOCANON}, #endif #ifdef HAVE_GSSAPI {0, ATTR_GSSAPI,"GSSAPI_SIGN", NULL, LDAP_OPT_SIGN}, {0, ATTR_GSSAPI,"GSSAPI_ENCRYPT", NULL, LDAP_OPT_ENCRYPT}, {0, ATTR_GSSAPI,"GSSAPI_ALLOW_REMOTE_PRINCIPAL",NULL, LDAP_OPT_X_GSSAPI_ALLOW_REMOTE_PRINCIPAL}, #endif #ifdef HAVE_TLS {1, ATTR_TLS, "TLS_CERT", NULL, LDAP_OPT_X_TLS_CERTFILE}, {1, ATTR_TLS, "TLS_KEY", NULL, LDAP_OPT_X_TLS_KEYFILE}, {0, ATTR_TLS, "TLS_CACERT", NULL, LDAP_OPT_X_TLS_CACERTFILE}, {0, ATTR_TLS, "TLS_CACERTDIR", NULL, LDAP_OPT_X_TLS_CACERTDIR}, {0, ATTR_TLS, "TLS_REQCERT", NULL, LDAP_OPT_X_TLS_REQUIRE_CERT}, {0, ATTR_TLS, "TLS_RANDFILE", NULL, LDAP_OPT_X_TLS_RANDOM_FILE}, {0, ATTR_TLS, "TLS_CIPHER_SUITE", NULL, LDAP_OPT_X_TLS_CIPHER_SUITE}, {0, ATTR_TLS, "TLS_PROTOCOL_MIN", NULL, LDAP_OPT_X_TLS_PROTOCOL_MIN}, #ifdef HAVE_OPENSSL_CRL {0, ATTR_TLS, "TLS_CRLCHECK", NULL, LDAP_OPT_X_TLS_CRLCHECK}, #endif #ifdef HAVE_GNUTLS {0, ATTR_TLS, "TLS_CRLFILE", NULL, LDAP_OPT_X_TLS_CRLFILE}, #endif #endif {0, ATTR_NONE, NULL, NULL, 0} }; #define MAX_LDAP_ATTR_LEN sizeof("GSSAPI_ALLOW_REMOTE_PRINCIPAL") #define MAX_LDAP_ENV_PREFIX_LEN 8 static void openldap_ldap_init_w_conf( const char *file, int userconf ) { char linebuf[ AC_LINE_MAX ]; FILE *fp; int i; char *cmd, *opt; char *start, *end; struct ldapoptions *gopts; if ((gopts = LDAP_INT_GLOBAL_OPT()) == NULL) { return; /* Could not allocate mem for global options */ } if (file == NULL) { /* no file name */ return; } Debug(LDAP_DEBUG_TRACE, "ldap_init: trying %s\n", file, 0, 0); fp = fopen(file, "r"); if(fp == NULL) { /* could not open file */ return; } Debug(LDAP_DEBUG_TRACE, "ldap_init: using %s\n", file, 0, 0); while((start = fgets(linebuf, sizeof(linebuf), fp)) != NULL) { /* skip lines starting with '#' */ if(*start == '#') continue; /* trim leading white space */ while((*start != '\0') && isspace((unsigned char) *start)) start++; /* anything left? */ if(*start == '\0') continue; /* trim trailing white space */ end = &start[strlen(start)-1]; while(isspace((unsigned char)*end)) end--; end[1] = '\0'; /* anything left? */ if(*start == '\0') continue; /* parse the command */ cmd=start; while((*start != '\0') && !isspace((unsigned char)*start)) { start++; } if(*start == '\0') { /* command has no argument */ continue; } *start++ = '\0'; /* we must have some whitespace to skip */ while(isspace((unsigned char)*start)) start++; opt = start; for(i=0; attrs[i].type != ATTR_NONE; i++) { void *p; if( !userconf && attrs[i].useronly ) { continue; } if(strcasecmp(cmd, attrs[i].name) != 0) { continue; } switch(attrs[i].type) { case ATTR_BOOL: if((strcasecmp(opt, "on") == 0) || (strcasecmp(opt, "yes") == 0) || (strcasecmp(opt, "true") == 0)) { LDAP_BOOL_SET(gopts, attrs[i].offset); } else { LDAP_BOOL_CLR(gopts, attrs[i].offset); } break; case ATTR_INT: { char *next; long l; p = &((char *) gopts)[attrs[i].offset]; l = strtol( opt, &next, 10 ); if ( next != opt && next[ 0 ] == '\0' ) { * (int*) p = l; } } break; case ATTR_KV: { const struct ol_keyvalue *kv; for(kv = attrs[i].data; kv->key != NULL; kv++) { if(strcasecmp(opt, kv->key) == 0) { p = &((char *) gopts)[attrs[i].offset]; * (int*) p = kv->value; break; } } } break; case ATTR_STRING: p = &((char *) gopts)[attrs[i].offset]; if (* (char**) p != NULL) LDAP_FREE(* (char**) p); * (char**) p = LDAP_STRDUP(opt); break; case ATTR_OPTION: ldap_set_option( NULL, attrs[i].offset, opt ); break; case ATTR_SASL: #ifdef HAVE_CYRUS_SASL ldap_int_sasl_config( gopts, attrs[i].offset, opt ); #endif break; case ATTR_GSSAPI: #ifdef HAVE_GSSAPI ldap_int_gssapi_config( gopts, attrs[i].offset, opt ); #endif break; case ATTR_TLS: #ifdef HAVE_TLS ldap_int_tls_config( NULL, attrs[i].offset, opt ); #endif break; case ATTR_OPT_TV: { struct timeval tv; char *next; tv.tv_usec = 0; tv.tv_sec = strtol( opt, &next, 10 ); if ( next != opt && next[ 0 ] == '\0' && tv.tv_sec > 0 ) { (void)ldap_set_option( NULL, attrs[i].offset, (const void *)&tv ); } } break; case ATTR_OPT_INT: { long l; char *next; l = strtol( opt, &next, 10 ); if ( next != opt && next[ 0 ] == '\0' && l > 0 && (long)((int)l) == l ) { int v = (int)l; (void)ldap_set_option( NULL, attrs[i].offset, (const void *)&v ); } } break; } break; } } fclose(fp); } static void openldap_ldap_init_w_sysconf(const char *file) { openldap_ldap_init_w_conf( file, 0 ); } static void openldap_ldap_init_w_userconf(const char *file) { char *home; char *path = NULL; if (file == NULL) { /* no file name */ return; } home = getenv("HOME"); if (home != NULL) { Debug(LDAP_DEBUG_TRACE, "ldap_init: HOME env is %s\n", home, 0, 0); path = LDAP_MALLOC(strlen(home) + strlen(file) + sizeof( LDAP_DIRSEP ".")); } else { Debug(LDAP_DEBUG_TRACE, "ldap_init: HOME env is NULL\n", 0, 0, 0); } if(home != NULL && path != NULL) { /* we assume UNIX path syntax is used... */ /* try ~/file */ sprintf(path, "%s" LDAP_DIRSEP "%s", home, file); openldap_ldap_init_w_conf(path, 1); /* try ~/.file */ sprintf(path, "%s" LDAP_DIRSEP ".%s", home, file); openldap_ldap_init_w_conf(path, 1); } if(path != NULL) { LDAP_FREE(path); } /* try file */ openldap_ldap_init_w_conf(file, 1); } static void openldap_ldap_init_w_env( struct ldapoptions *gopts, const char *prefix) { char buf[MAX_LDAP_ATTR_LEN+MAX_LDAP_ENV_PREFIX_LEN]; int len; int i; void *p; char *value; if (prefix == NULL) { prefix = LDAP_ENV_PREFIX; } strncpy(buf, prefix, MAX_LDAP_ENV_PREFIX_LEN); buf[MAX_LDAP_ENV_PREFIX_LEN] = '\0'; len = strlen(buf); for(i=0; attrs[i].type != ATTR_NONE; i++) { strcpy(&buf[len], attrs[i].name); value = getenv(buf); if(value == NULL) { continue; } switch(attrs[i].type) { case ATTR_BOOL: if((strcasecmp(value, "on") == 0) || (strcasecmp(value, "yes") == 0) || (strcasecmp(value, "true") == 0)) { LDAP_BOOL_SET(gopts, attrs[i].offset); } else { LDAP_BOOL_CLR(gopts, attrs[i].offset); } break; case ATTR_INT: p = &((char *) gopts)[attrs[i].offset]; * (int*) p = atoi(value); break; case ATTR_KV: { const struct ol_keyvalue *kv; for(kv = attrs[i].data; kv->key != NULL; kv++) { if(strcasecmp(value, kv->key) == 0) { p = &((char *) gopts)[attrs[i].offset]; * (int*) p = kv->value; break; } } } break; case ATTR_STRING: p = &((char *) gopts)[attrs[i].offset]; if (* (char**) p != NULL) LDAP_FREE(* (char**) p); if (*value == '\0') { * (char**) p = NULL; } else { * (char**) p = LDAP_STRDUP(value); } break; case ATTR_OPTION: ldap_set_option( NULL, attrs[i].offset, value ); break; case ATTR_SASL: #ifdef HAVE_CYRUS_SASL ldap_int_sasl_config( gopts, attrs[i].offset, value ); #endif break; case ATTR_GSSAPI: #ifdef HAVE_GSSAPI ldap_int_gssapi_config( gopts, attrs[i].offset, value ); #endif break; case ATTR_TLS: #ifdef HAVE_TLS ldap_int_tls_config( NULL, attrs[i].offset, value ); #endif break; case ATTR_OPT_TV: { struct timeval tv; char *next; tv.tv_usec = 0; tv.tv_sec = strtol( value, &next, 10 ); if ( next != value && next[ 0 ] == '\0' && tv.tv_sec > 0 ) { (void)ldap_set_option( NULL, attrs[i].offset, (const void *)&tv ); } } break; case ATTR_OPT_INT: { long l; char *next; l = strtol( value, &next, 10 ); if ( next != value && next[ 0 ] == '\0' && l > 0 && (long)((int)l) == l ) { int v = (int)l; (void)ldap_set_option( NULL, attrs[i].offset, (const void *)&v ); } } break; } } } #if defined(__GNUC__) /* Declare this function as a destructor so that it will automatically be * invoked either at program exit (if libldap is a static library) or * at unload time (if libldap is a dynamic library). * * Sorry, don't know how to handle this for non-GCC environments. */ static void ldap_int_destroy_global_options(void) __attribute__ ((destructor)); #endif static void ldap_int_destroy_global_options(void) { struct ldapoptions *gopts = LDAP_INT_GLOBAL_OPT(); if ( gopts == NULL ) return; gopts->ldo_valid = LDAP_UNINITIALIZED; if ( gopts->ldo_defludp ) { ldap_free_urllist( gopts->ldo_defludp ); gopts->ldo_defludp = NULL; } #if defined(HAVE_WINSOCK) || defined(HAVE_WINSOCK2) WSACleanup( ); #endif #if defined(HAVE_TLS) || defined(HAVE_CYRUS_SASL) if ( ldap_int_hostname ) { LDAP_FREE( ldap_int_hostname ); ldap_int_hostname = NULL; } #endif #ifdef HAVE_CYRUS_SASL if ( gopts->ldo_def_sasl_authcid ) { LDAP_FREE( gopts->ldo_def_sasl_authcid ); gopts->ldo_def_sasl_authcid = NULL; } #endif #ifdef HAVE_TLS ldap_int_tls_destroy( gopts ); #endif } /* * Initialize the global options structure with default values. */ void ldap_int_initialize_global_options( struct ldapoptions *gopts, int *dbglvl ) { if (dbglvl) gopts->ldo_debug = *dbglvl; else gopts->ldo_debug = 0; gopts->ldo_version = LDAP_VERSION2; gopts->ldo_deref = LDAP_DEREF_NEVER; gopts->ldo_timelimit = LDAP_NO_LIMIT; gopts->ldo_sizelimit = LDAP_NO_LIMIT; gopts->ldo_tm_api.tv_sec = -1; gopts->ldo_tm_net.tv_sec = -1; /* ldo_defludp will be freed by the termination handler */ ldap_url_parselist(&gopts->ldo_defludp, "ldap://localhost/"); gopts->ldo_defport = LDAP_PORT; #if !defined(__GNUC__) && !defined(PIC) /* Do this only for a static library, and only if we can't * arrange for it to be executed as a library destructor */ atexit(ldap_int_destroy_global_options); #endif gopts->ldo_refhoplimit = LDAP_DEFAULT_REFHOPLIMIT; gopts->ldo_rebind_proc = NULL; gopts->ldo_rebind_params = NULL; LDAP_BOOL_ZERO(gopts); LDAP_BOOL_SET(gopts, LDAP_BOOL_REFERRALS); #ifdef LDAP_CONNECTIONLESS gopts->ldo_peer = NULL; gopts->ldo_cldapdn = NULL; gopts->ldo_is_udp = 0; #endif #ifdef HAVE_CYRUS_SASL 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; gopts->ldo_tls_require_cert = LDAP_OPT_X_TLS_DEMAND; #endif gopts->ldo_keepalive_probes = 0; gopts->ldo_keepalive_interval = 0; gopts->ldo_keepalive_idle = 0; gopts->ldo_valid = LDAP_INITIALIZED; return; } #if defined(HAVE_TLS) || defined(HAVE_CYRUS_SASL) char * ldap_int_hostname = NULL; #endif void ldap_int_initialize( struct ldapoptions *gopts, int *dbglvl ) { #ifdef LDAP_R_COMPILE static ldap_pvt_thread_mutex_t init_mutex; LDAP_PVT_MUTEX_FIRSTCREATE( init_mutex ); LDAP_MUTEX_LOCK( &init_mutex ); #endif if ( gopts->ldo_valid == LDAP_INITIALIZED ) { /* someone else got here first */ goto done; } 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. */ goto done; } /* 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( ); goto done; } } /* The WinSock DLL is acceptable. Proceed. */ #elif defined(HAVE_WINSOCK) { WSADATA wsaData; if ( WSAStartup( 0x0101, &wsaData ) != 0 ) { goto done; } } #endif #if defined(HAVE_TLS) || defined(HAVE_CYRUS_SASL) LDAP_MUTEX_LOCK( &ldap_int_hostname_mutex ); { char *name = ldap_int_hostname; ldap_int_hostname = ldap_pvt_get_fqdn( name ); if ( name != NULL && name != ldap_int_hostname ) { LDAP_FREE( name ); } } LDAP_MUTEX_UNLOCK( &ldap_int_hostname_mutex ); #endif #ifndef HAVE_POLL if ( ldap_int_tblsize == 0 ) ldap_int_ip_init(); #endif #ifdef HAVE_CYRUS_SASL if ( ldap_int_sasl_init() != 0 ) { goto done; } #endif ldap_int_initialize_global_options(gopts, dbglvl); if( getenv("LDAPNOINIT") != NULL ) { goto done; } #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); #ifdef HAVE_GETEUID if ( geteuid() != getuid() ) goto done; #endif 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); done:; #ifdef LDAP_R_COMPILE LDAP_MUTEX_UNLOCK( &init_mutex ); #endif }