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- /* $OpenLDAP: pkg/ldap/libraries/libldap/init.c,v 1.33.2.9 2001/09/07 21:17:03 kurt Exp $ */
- /*
- * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
- * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
- */
- #include "portable.h"
-
- #include <stdio.h>
- #include <ac/stdlib.h>
-
- #include <ac/socket.h>
- #include <ac/string.h>
- #include <ac/ctype.h>
- #include <ac/time.h>
-
- #include <limits.h>
-
- #include "ldap-int.h"
- #include "ldap_defaults.h"
-
- struct ldapoptions ldap_int_global_options =
- { LDAP_UNINITIALIZED, LDAP_DEBUG_NONE };
-
- #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
-
- 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_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},
- {0, ATTR_BOOL, "RESTART", NULL, LDAP_BOOL_RESTART},
-
- #ifdef HAVE_CYRUS_SASL
- {1, ATTR_STRING, "SASL_MECH", NULL,
- offsetof(struct ldapoptions, ldo_def_sasl_mech)},
- {1, 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},
- #endif
-
- #ifdef HAVE_TLS
- {0, ATTR_TLS, "TLS", NULL, LDAP_OPT_X_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},
- #endif
-
- {0, ATTR_NONE, NULL, NULL, 0}
- };
-
- #define MAX_LDAP_ATTR_LEN sizeof("TLS_CACERTDIR")
- #define MAX_LDAP_ENV_PREFIX_LEN 8
-
- static void openldap_ldap_init_w_conf(
- const char *file, int userconf )
- {
- char linebuf[128];
- 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:
- p = &((char *) gopts)[attrs[i].offset];
- * (int*) p = atoi(opt);
- 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_TLS:
- #ifdef HAVE_TLS
- ldap_int_tls_config( NULL, attrs[i].offset, opt );
- #endif
- 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) + 3);
- } 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/%s", home, file);
- openldap_ldap_init_w_conf(path, 1);
-
- /* try ~/.file */
- sprintf(path, "%s/.%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_TLS:
- #ifdef HAVE_TLS
- ldap_int_tls_config( NULL, attrs[i].offset, value );
- #endif
- break;
- }
- }
- }
-
- /*
- * 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 = (struct timeval *)NULL;
- gopts->ldo_tm_net = (struct timeval *)NULL;
-
- /* ldo_defludp is leaked, we should have an at_exit() handler
- * to free this and whatever else needs to cleaned up.
- */
- ldap_url_parselist(&gopts->ldo_defludp, "ldap://localhost/");
- gopts->ldo_defport = LDAP_PORT;
-
- gopts->ldo_refhoplimit = LDAP_DEFAULT_REFHOPLIMIT;
- gopts->ldo_rebindproc = NULL;
-
- LDAP_BOOL_ZERO(gopts);
-
- LDAP_BOOL_SET(gopts, LDAP_BOOL_REFERRALS);
-
- #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
-
- 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;
- }
-
- #if defined(LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND) \
- || defined(HAVE_TLS) || defined(HAVE_CYRUS_SASL)
- ldap_int_hostname = ldap_pvt_get_fqdn( ldap_int_hostname );
- #endif
-
- ldap_int_utils_init();
-
- if ( ldap_int_tblsize == 0 )
- ldap_int_ip_init();
-
- 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 ) {
- /* this value is leaked, need at_exit() handler */
- 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);
-
- ldap_int_sasl_init();
- }
-