From 954c01728e0c7485b72c9a5d5737e5f6bd0cf0b9 Mon Sep 17 00:00:00 2001 From: Heimdal Import User Date: Mon, 11 Jul 2005 01:16:55 +0000 Subject: r8302: import mini HEIMDAL into the tree (This used to be commit 118be28a7aef233799956615a99d1a2a74dac175) --- source4/heimdal/lib/krb5/krbhst.c | 861 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 861 insertions(+) create mode 100644 source4/heimdal/lib/krb5/krbhst.c (limited to 'source4/heimdal/lib/krb5/krbhst.c') diff --git a/source4/heimdal/lib/krb5/krbhst.c b/source4/heimdal/lib/krb5/krbhst.c new file mode 100644 index 0000000000..49eee08ca5 --- /dev/null +++ b/source4/heimdal/lib/krb5/krbhst.c @@ -0,0 +1,861 @@ +/* + * Copyright (c) 2001 - 2003 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include "krb5_locl.h" +#include + +RCSID("$Id: krbhst.c,v 1.52 2005/06/17 04:23:26 lha Exp $"); + +static int +string_to_proto(const char *string) +{ + if(strcasecmp(string, "udp") == 0) + return KRB5_KRBHST_UDP; + else if(strcasecmp(string, "tcp") == 0) + return KRB5_KRBHST_TCP; + else if(strcasecmp(string, "http") == 0) + return KRB5_KRBHST_HTTP; + return -1; +} + +/* + * set `res' and `count' to the result of looking up SRV RR in DNS for + * `proto', `proto', `realm' using `dns_type'. + * if `port' != 0, force that port number + */ + +static krb5_error_code +srv_find_realm(krb5_context context, krb5_krbhst_info ***res, int *count, + const char *realm, const char *dns_type, + const char *proto, const char *service, int port) +{ + char domain[1024]; + struct dns_reply *r; + struct resource_record *rr; + int num_srv; + int proto_num; + int def_port; + + *res = NULL; + *count = 0; + + proto_num = string_to_proto(proto); + if(proto_num < 0) { + krb5_set_error_string(context, "unknown protocol `%s'", proto); + return EINVAL; + } + + if(proto_num == KRB5_KRBHST_HTTP) + def_port = ntohs(krb5_getportbyname (context, "http", "tcp", 80)); + else if(port == 0) + def_port = ntohs(krb5_getportbyname (context, service, proto, 88)); + else + def_port = port; + + snprintf(domain, sizeof(domain), "_%s._%s.%s.", service, proto, realm); + + r = dns_lookup(domain, dns_type); + if(r == NULL) + return KRB5_KDC_UNREACH; + + for(num_srv = 0, rr = r->head; rr; rr = rr->next) + if(rr->type == T_SRV) + num_srv++; + + *res = malloc(num_srv * sizeof(**res)); + if(*res == NULL) { + dns_free_data(r); + krb5_set_error_string(context, "malloc: out of memory"); + return ENOMEM; + } + + dns_srv_order(r); + + for(num_srv = 0, rr = r->head; rr; rr = rr->next) + if(rr->type == T_SRV) { + krb5_krbhst_info *hi; + size_t len = strlen(rr->u.srv->target); + + hi = calloc(1, sizeof(*hi) + len); + if(hi == NULL) { + dns_free_data(r); + while(--num_srv >= 0) + free((*res)[num_srv]); + free(*res); + *res = NULL; + return ENOMEM; + } + (*res)[num_srv++] = hi; + + hi->proto = proto_num; + + hi->def_port = def_port; + if (port != 0) + hi->port = port; + else + hi->port = rr->u.srv->port; + + strlcpy(hi->hostname, rr->u.srv->target, len + 1); + } + + *count = num_srv; + + dns_free_data(r); + return 0; +} + + +struct krb5_krbhst_data { + char *realm; + unsigned int flags; + int def_port; + int port; /* hardwired port number if != 0 */ +#define KD_CONFIG 1 +#define KD_SRV_UDP 2 +#define KD_SRV_TCP 4 +#define KD_SRV_HTTP 8 +#define KD_FALLBACK 16 +#define KD_CONFIG_EXISTS 32 +#define KD_LARGE_MSG 64 + krb5_error_code (*get_next)(krb5_context, struct krb5_krbhst_data *, + krb5_krbhst_info**); + + unsigned int fallback_count; + + struct krb5_krbhst_info *hosts, **index, **end; +}; + +static krb5_boolean +krbhst_empty(const struct krb5_krbhst_data *kd) +{ + return kd->index == &kd->hosts; +} + +/* + * Return the default protocol for the `kd' (either TCP or UDP) + */ + +static int +krbhst_get_default_proto(struct krb5_krbhst_data *kd) +{ + if (kd->flags & KD_LARGE_MSG) + return KRB5_KRBHST_TCP; + return KRB5_KRBHST_UDP; +} + + +/* + * parse `spec' into a krb5_krbhst_info, defaulting the port to `def_port' + * and forcing it to `port' if port != 0 + */ + +static struct krb5_krbhst_info* +parse_hostspec(krb5_context context, struct krb5_krbhst_data *kd, + const char *spec, int def_port, int port) +{ + const char *p = spec; + struct krb5_krbhst_info *hi; + + hi = calloc(1, sizeof(*hi) + strlen(spec)); + if(hi == NULL) + return NULL; + + hi->proto = krbhst_get_default_proto(kd); + + if(strncmp(p, "http://", 7) == 0){ + hi->proto = KRB5_KRBHST_HTTP; + p += 7; + } else if(strncmp(p, "http/", 5) == 0) { + hi->proto = KRB5_KRBHST_HTTP; + p += 5; + def_port = ntohs(krb5_getportbyname (context, "http", "tcp", 80)); + }else if(strncmp(p, "tcp/", 4) == 0){ + hi->proto = KRB5_KRBHST_TCP; + p += 4; + } else if(strncmp(p, "udp/", 4) == 0) { + p += 4; + } + + if(strsep_copy(&p, ":", hi->hostname, strlen(spec) + 1) < 0) { + free(hi); + return NULL; + } + /* get rid of trailing /, and convert to lower case */ + hi->hostname[strcspn(hi->hostname, "/")] = '\0'; + strlwr(hi->hostname); + + hi->port = hi->def_port = def_port; + if(p != NULL) { + char *end; + hi->port = strtol(p, &end, 0); + if(end == p) { + free(hi); + return NULL; + } + } + if (port) + hi->port = port; + return hi; +} + +static void +free_krbhst_info(krb5_krbhst_info *hi) +{ + if (hi->ai != NULL) + freeaddrinfo(hi->ai); + free(hi); +} + +static void +append_host_hostinfo(struct krb5_krbhst_data *kd, struct krb5_krbhst_info *host) +{ + struct krb5_krbhst_info *h; + + for(h = kd->hosts; h; h = h->next) + if(h->proto == host->proto && + h->port == host->port && + strcmp(h->hostname, host->hostname) == 0) { + free_krbhst_info(host); + return; + } + *kd->end = host; + kd->end = &host->next; +} + +static krb5_error_code +append_host_string(krb5_context context, struct krb5_krbhst_data *kd, + const char *host, int def_port, int port) +{ + struct krb5_krbhst_info *hi; + + hi = parse_hostspec(context, kd, host, def_port, port); + if(hi == NULL) + return ENOMEM; + + append_host_hostinfo(kd, hi); + return 0; +} + +/* + * return a readable representation of `host' in `hostname, hostlen' + */ + +krb5_error_code KRB5_LIB_FUNCTION +krb5_krbhst_format_string(krb5_context context, const krb5_krbhst_info *host, + char *hostname, size_t hostlen) +{ + const char *proto = ""; + char portstr[7] = ""; + if(host->proto == KRB5_KRBHST_TCP) + proto = "tcp/"; + else if(host->proto == KRB5_KRBHST_HTTP) + proto = "http://"; + if(host->port != host->def_port) + snprintf(portstr, sizeof(portstr), ":%d", host->port); + snprintf(hostname, hostlen, "%s%s%s", proto, host->hostname, portstr); + return 0; +} + +/* + * create a getaddrinfo `hints' based on `proto' + */ + +static void +make_hints(struct addrinfo *hints, int proto) +{ + memset(hints, 0, sizeof(*hints)); + hints->ai_family = AF_UNSPEC; + switch(proto) { + case KRB5_KRBHST_UDP : + hints->ai_socktype = SOCK_DGRAM; + break; + case KRB5_KRBHST_HTTP : + case KRB5_KRBHST_TCP : + hints->ai_socktype = SOCK_STREAM; + break; + } +} + +/* + * return an `struct addrinfo *' in `ai' corresponding to the information + * in `host'. free:ing is handled by krb5_krbhst_free. + */ + +krb5_error_code KRB5_LIB_FUNCTION +krb5_krbhst_get_addrinfo(krb5_context context, krb5_krbhst_info *host, + struct addrinfo **ai) +{ + struct addrinfo hints; + char portstr[NI_MAXSERV]; + int ret; + + if (host->ai == NULL) { + make_hints(&hints, host->proto); + snprintf (portstr, sizeof(portstr), "%d", host->port); + ret = getaddrinfo(host->hostname, portstr, &hints, &host->ai); + if (ret) + return krb5_eai_to_heim_errno(ret, errno); + } + *ai = host->ai; + return 0; +} + +static krb5_boolean +get_next(struct krb5_krbhst_data *kd, krb5_krbhst_info **host) +{ + struct krb5_krbhst_info *hi = *kd->index; + if(hi != NULL) { + *host = hi; + kd->index = &(*kd->index)->next; + return TRUE; + } + return FALSE; +} + +static void +srv_get_hosts(krb5_context context, struct krb5_krbhst_data *kd, + const char *proto, const char *service) +{ + krb5_krbhst_info **res; + int count, i; + + if (srv_find_realm(context, &res, &count, kd->realm, "SRV", proto, service, + kd->port)) + return; + for(i = 0; i < count; i++) + append_host_hostinfo(kd, res[i]); + free(res); +} + +/* + * read the configuration for `conf_string', defaulting to kd->def_port and + * forcing it to `kd->port' if kd->port != 0 + */ + +static void +config_get_hosts(krb5_context context, struct krb5_krbhst_data *kd, + const char *conf_string) +{ + int i; + + char **hostlist; + hostlist = krb5_config_get_strings(context, NULL, + "realms", kd->realm, conf_string, NULL); + + if(hostlist == NULL) + return; + kd->flags |= KD_CONFIG_EXISTS; + for(i = 0; hostlist && hostlist[i] != NULL; i++) + append_host_string(context, kd, hostlist[i], kd->def_port, kd->port); + + krb5_config_free_strings(hostlist); +} + +/* + * as a fallback, look for `serv_string.kd->realm' (typically + * kerberos.REALM, kerberos-1.REALM, ... + * `port' is the default port for the service, and `proto' the + * protocol + */ + +static krb5_error_code +fallback_get_hosts(krb5_context context, struct krb5_krbhst_data *kd, + const char *serv_string, int port, int proto) +{ + char *host; + int ret; + struct addrinfo *ai; + struct addrinfo hints; + char portstr[NI_MAXSERV]; + + if(kd->fallback_count == 0) + asprintf(&host, "%s.%s.", serv_string, kd->realm); + else + asprintf(&host, "%s-%d.%s.", + serv_string, kd->fallback_count, kd->realm); + + if (host == NULL) + return ENOMEM; + + make_hints(&hints, proto); + snprintf(portstr, sizeof(portstr), "%d", port); + ret = getaddrinfo(host, portstr, &hints, &ai); + if (ret) { + /* no more hosts, so we're done here */ + free(host); + kd->flags |= KD_FALLBACK; + } else { + struct krb5_krbhst_info *hi; + size_t hostlen = strlen(host); + + hi = calloc(1, sizeof(*hi) + hostlen); + if(hi == NULL) { + free(host); + return ENOMEM; + } + + hi->proto = proto; + hi->port = hi->def_port = port; + hi->ai = ai; + memmove(hi->hostname, host, hostlen - 1); + hi->hostname[hostlen - 1] = '\0'; + free(host); + append_host_hostinfo(kd, hi); + kd->fallback_count++; + } + return 0; +} + +static krb5_error_code +kdc_get_next(krb5_context context, + struct krb5_krbhst_data *kd, + krb5_krbhst_info **host) +{ + krb5_error_code ret; + + if((kd->flags & KD_CONFIG) == 0) { + config_get_hosts(context, kd, "kdc"); + kd->flags |= KD_CONFIG; + if(get_next(kd, host)) + return 0; + } + + if (kd->flags & KD_CONFIG_EXISTS) + return KRB5_KDC_UNREACH; /* XXX */ + + if(context->srv_lookup) { + if((kd->flags & KD_SRV_UDP) == 0 && (kd->flags & KD_LARGE_MSG) == 0) { + srv_get_hosts(context, kd, "udp", "kerberos"); + kd->flags |= KD_SRV_UDP; + if(get_next(kd, host)) + return 0; + } + + if((kd->flags & KD_SRV_TCP) == 0) { + srv_get_hosts(context, kd, "tcp", "kerberos"); + kd->flags |= KD_SRV_TCP; + if(get_next(kd, host)) + return 0; + } + if((kd->flags & KD_SRV_HTTP) == 0) { + srv_get_hosts(context, kd, "http", "kerberos"); + kd->flags |= KD_SRV_HTTP; + if(get_next(kd, host)) + return 0; + } + } + + while((kd->flags & KD_FALLBACK) == 0) { + ret = fallback_get_hosts(context, kd, "kerberos", + kd->def_port, + krbhst_get_default_proto(kd)); + if(ret) + return ret; + if(get_next(kd, host)) + return 0; + } + + return KRB5_KDC_UNREACH; /* XXX */ +} + +static krb5_error_code +admin_get_next(krb5_context context, + struct krb5_krbhst_data *kd, + krb5_krbhst_info **host) +{ + krb5_error_code ret; + + if((kd->flags & KD_CONFIG) == 0) { + config_get_hosts(context, kd, "admin_server"); + kd->flags |= KD_CONFIG; + if(get_next(kd, host)) + return 0; + } + + if (kd->flags & KD_CONFIG_EXISTS) + return KRB5_KDC_UNREACH; /* XXX */ + + if(context->srv_lookup) { + if((kd->flags & KD_SRV_TCP) == 0) { + srv_get_hosts(context, kd, "tcp", "kerberos-adm"); + kd->flags |= KD_SRV_TCP; + if(get_next(kd, host)) + return 0; + } + } + + if (krbhst_empty(kd) + && (kd->flags & KD_FALLBACK) == 0) { + ret = fallback_get_hosts(context, kd, "kerberos", + kd->def_port, + krbhst_get_default_proto(kd)); + if(ret) + return ret; + kd->flags |= KD_FALLBACK; + if(get_next(kd, host)) + return 0; + } + + return KRB5_KDC_UNREACH; /* XXX */ +} + +static krb5_error_code +kpasswd_get_next(krb5_context context, + struct krb5_krbhst_data *kd, + krb5_krbhst_info **host) +{ + krb5_error_code ret; + + if((kd->flags & KD_CONFIG) == 0) { + config_get_hosts(context, kd, "kpasswd_server"); + kd->flags |= KD_CONFIG; + if(get_next(kd, host)) + return 0; + } + + if (kd->flags & KD_CONFIG_EXISTS) + return KRB5_KDC_UNREACH; /* XXX */ + + if(context->srv_lookup) { + if((kd->flags & KD_SRV_UDP) == 0) { + srv_get_hosts(context, kd, "udp", "kpasswd"); + kd->flags |= KD_SRV_UDP; + if(get_next(kd, host)) + return 0; + } + if((kd->flags & KD_SRV_TCP) == 0) { + srv_get_hosts(context, kd, "tcp", "kpasswd"); + kd->flags |= KD_SRV_TCP; + if(get_next(kd, host)) + return 0; + } + } + + /* no matches -> try admin */ + + if (krbhst_empty(kd)) { + kd->flags = 0; + kd->port = kd->def_port; + kd->get_next = admin_get_next; + ret = (*kd->get_next)(context, kd, host); + if (ret == 0) + (*host)->proto = krbhst_get_default_proto(kd); + return ret; + } + + return KRB5_KDC_UNREACH; /* XXX */ +} + +static krb5_error_code +krb524_get_next(krb5_context context, + struct krb5_krbhst_data *kd, + krb5_krbhst_info **host) +{ + if((kd->flags & KD_CONFIG) == 0) { + config_get_hosts(context, kd, "krb524_server"); + if(get_next(kd, host)) + return 0; + kd->flags |= KD_CONFIG; + } + + if (kd->flags & KD_CONFIG_EXISTS) + return KRB5_KDC_UNREACH; /* XXX */ + + if(context->srv_lookup) { + if((kd->flags & KD_SRV_UDP) == 0) { + srv_get_hosts(context, kd, "udp", "krb524"); + kd->flags |= KD_SRV_UDP; + if(get_next(kd, host)) + return 0; + } + + if((kd->flags & KD_SRV_TCP) == 0) { + srv_get_hosts(context, kd, "tcp", "krb524"); + kd->flags |= KD_SRV_TCP; + if(get_next(kd, host)) + return 0; + } + } + + /* no matches -> try kdc */ + + if (krbhst_empty(kd)) { + kd->flags = 0; + kd->port = kd->def_port; + kd->get_next = kdc_get_next; + return (*kd->get_next)(context, kd, host); + } + + return KRB5_KDC_UNREACH; /* XXX */ +} + +static struct krb5_krbhst_data* +common_init(krb5_context context, + const char *realm, + int flags) +{ + struct krb5_krbhst_data *kd; + + if((kd = calloc(1, sizeof(*kd))) == NULL) + return NULL; + + if((kd->realm = strdup(realm)) == NULL) { + free(kd); + return NULL; + } + + if (flags & KRB5_KRBHST_FLAGS_LARGE_MSG) + kd->flags |= KD_LARGE_MSG; + kd->end = kd->index = &kd->hosts; + return kd; +} + +/* + * initialize `handle' to look for hosts of type `type' in realm `realm' + */ + +krb5_error_code KRB5_LIB_FUNCTION +krb5_krbhst_init(krb5_context context, + const char *realm, + unsigned int type, + krb5_krbhst_handle *handle) +{ + return krb5_krbhst_init_flags(context, realm, type, 0, handle); +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_krbhst_init_flags(krb5_context context, + const char *realm, + unsigned int type, + int flags, + krb5_krbhst_handle *handle) +{ + struct krb5_krbhst_data *kd; + krb5_error_code (*next)(krb5_context, struct krb5_krbhst_data *, + krb5_krbhst_info **); + int def_port; + + switch(type) { + case KRB5_KRBHST_KDC: + next = kdc_get_next; + def_port = ntohs(krb5_getportbyname (context, "kerberos", "udp", 88)); + break; + case KRB5_KRBHST_ADMIN: + next = admin_get_next; + def_port = ntohs(krb5_getportbyname (context, "kerberos-adm", + "tcp", 749)); + break; + case KRB5_KRBHST_CHANGEPW: + next = kpasswd_get_next; + def_port = ntohs(krb5_getportbyname (context, "kpasswd", "udp", + KPASSWD_PORT)); + break; + case KRB5_KRBHST_KRB524: + next = krb524_get_next; + def_port = ntohs(krb5_getportbyname (context, "krb524", "udp", 4444)); + break; + default: + krb5_set_error_string(context, "unknown krbhst type (%u)", type); + return ENOTTY; + } + if((kd = common_init(context, realm, flags)) == NULL) + return ENOMEM; + kd->get_next = next; + kd->def_port = def_port; + *handle = kd; + return 0; +} + +/* + * return the next host information from `handle' in `host' + */ + +krb5_error_code KRB5_LIB_FUNCTION +krb5_krbhst_next(krb5_context context, + krb5_krbhst_handle handle, + krb5_krbhst_info **host) +{ + if(get_next(handle, host)) + return 0; + + return (*handle->get_next)(context, handle, host); +} + +/* + * return the next host information from `handle' as a host name + * in `hostname' (or length `hostlen) + */ + +krb5_error_code KRB5_LIB_FUNCTION +krb5_krbhst_next_as_string(krb5_context context, + krb5_krbhst_handle handle, + char *hostname, + size_t hostlen) +{ + krb5_error_code ret; + krb5_krbhst_info *host; + ret = krb5_krbhst_next(context, handle, &host); + if(ret) + return ret; + return krb5_krbhst_format_string(context, host, hostname, hostlen); +} + + +void KRB5_LIB_FUNCTION +krb5_krbhst_reset(krb5_context context, krb5_krbhst_handle handle) +{ + handle->index = &handle->hosts; +} + +void KRB5_LIB_FUNCTION +krb5_krbhst_free(krb5_context context, krb5_krbhst_handle handle) +{ + krb5_krbhst_info *h, *next; + + if (handle == NULL) + return; + + for (h = handle->hosts; h != NULL; h = next) { + next = h->next; + free_krbhst_info(h); + } + + free(handle->realm); + free(handle); +} + +/* backwards compatibility ahead */ + +static krb5_error_code +gethostlist(krb5_context context, const char *realm, + unsigned int type, char ***hostlist) +{ + krb5_error_code ret; + int nhost = 0; + krb5_krbhst_handle handle; + char host[MAXHOSTNAMELEN]; + krb5_krbhst_info *hostinfo; + + ret = krb5_krbhst_init(context, realm, type, &handle); + if (ret) + return ret; + + while(krb5_krbhst_next(context, handle, &hostinfo) == 0) + nhost++; + if(nhost == 0) + return KRB5_KDC_UNREACH; + *hostlist = calloc(nhost + 1, sizeof(**hostlist)); + if(*hostlist == NULL) { + krb5_krbhst_free(context, handle); + return ENOMEM; + } + + krb5_krbhst_reset(context, handle); + nhost = 0; + while(krb5_krbhst_next_as_string(context, handle, + host, sizeof(host)) == 0) { + if(((*hostlist)[nhost++] = strdup(host)) == NULL) { + krb5_free_krbhst(context, *hostlist); + krb5_krbhst_free(context, handle); + return ENOMEM; + } + } + (*hostlist)[nhost++] = NULL; + krb5_krbhst_free(context, handle); + return 0; +} + +/* + * return an malloced list of kadmin-hosts for `realm' in `hostlist' + */ + +krb5_error_code KRB5_LIB_FUNCTION +krb5_get_krb_admin_hst (krb5_context context, + const krb5_realm *realm, + char ***hostlist) +{ + return gethostlist(context, *realm, KRB5_KRBHST_ADMIN, hostlist); +} + +/* + * return an malloced list of changepw-hosts for `realm' in `hostlist' + */ + +krb5_error_code KRB5_LIB_FUNCTION +krb5_get_krb_changepw_hst (krb5_context context, + const krb5_realm *realm, + char ***hostlist) +{ + return gethostlist(context, *realm, KRB5_KRBHST_CHANGEPW, hostlist); +} + +/* + * return an malloced list of 524-hosts for `realm' in `hostlist' + */ + +krb5_error_code KRB5_LIB_FUNCTION +krb5_get_krb524hst (krb5_context context, + const krb5_realm *realm, + char ***hostlist) +{ + return gethostlist(context, *realm, KRB5_KRBHST_KRB524, hostlist); +} + + +/* + * return an malloced list of KDC's for `realm' in `hostlist' + */ + +krb5_error_code KRB5_LIB_FUNCTION +krb5_get_krbhst (krb5_context context, + const krb5_realm *realm, + char ***hostlist) +{ + return gethostlist(context, *realm, KRB5_KRBHST_KDC, hostlist); +} + +/* + * free all the memory allocated in `hostlist' + */ + +krb5_error_code KRB5_LIB_FUNCTION +krb5_free_krbhst (krb5_context context, + char **hostlist) +{ + char **p; + + for (p = hostlist; *p; ++p) + free (*p); + free (hostlist); + return 0; +} -- cgit