+++ /dev/null
-/***
- This file is part of avahi.
-
- avahi is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as
- published by the Free Software Foundation; either version 2.1 of the
- License, or (at your option) any later version.
-
- avahi is distributed in the hope that it will be useful, but WITHOUT
- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
- Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with avahi; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- USA.
-***/
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <string.h>
-#include <errno.h>
-#include <stdio.h>
-
-#include <avahi-common/llist.h>
-#include <avahi-common/malloc.h>
-#include <avahi-common/error.h>
-#include <avahi-core/log.h>
-#include <avahi-core/publish.h>
-
-#include "main.h"
-#include "static-hosts.h"
-
-typedef struct StaticHost StaticHost;
-
-struct StaticHost {
- AvahiSEntryGroup *group;
- int iteration;
-
- char *host;
- AvahiAddress address;
-
- AVAHI_LLIST_FIELDS(StaticHost, hosts);
-};
-
-static AVAHI_LLIST_HEAD(StaticHost, hosts) = NULL;
-static int current_iteration = 0;
-
-static void add_static_host_to_server(StaticHost *h);
-static void remove_static_host_from_server(StaticHost *h);
-
-static void entry_group_callback(AvahiServer *s, AVAHI_GCC_UNUSED AvahiSEntryGroup *eg, AvahiEntryGroupState state, void* userdata) {
- StaticHost *h;
-
- assert(s);
- assert(eg);
-
- h = userdata;
-
- switch (state) {
-
- case AVAHI_ENTRY_GROUP_COLLISION:
- avahi_log_error("Host name conflict for \"%s\", not established.", h->host);
- break;
-
- case AVAHI_ENTRY_GROUP_ESTABLISHED:
- avahi_log_notice ("Static host name \"%s\" successfully established.", h->host);
- break;
-
- case AVAHI_ENTRY_GROUP_FAILURE:
- avahi_log_notice ("Failed to establish static host name \"%s\": %s.", h->host, avahi_strerror (avahi_server_errno (s)));
- break;
-
- case AVAHI_ENTRY_GROUP_UNCOMMITED:
- case AVAHI_ENTRY_GROUP_REGISTERING:
- ;
- }
-}
-
-static StaticHost *static_host_new(void) {
- StaticHost *s;
-
- s = avahi_new(StaticHost, 1);
-
- s->group = NULL;
- s->host = NULL;
- s->iteration = current_iteration;
-
- AVAHI_LLIST_PREPEND(StaticHost, hosts, hosts, s);
-
- return s;
-}
-
-static void static_host_free(StaticHost *s) {
- assert(s);
-
- AVAHI_LLIST_REMOVE(StaticHost, hosts, hosts, s);
-
- if (s->group)
- avahi_s_entry_group_free (s->group);
-
- avahi_free(s->host);
-
- avahi_free(s);
-}
-
-static StaticHost *static_host_find(const char *host, const AvahiAddress *a) {
- StaticHost *h;
-
- assert(host);
- assert(a);
-
- for (h = hosts; h; h = h->hosts_next)
- if (!strcmp(h->host, host) && !avahi_address_cmp(a, &h->address))
- return h;
-
- return NULL;
-}
-
-static void add_static_host_to_server(StaticHost *h)
-{
-
- if (!h->group)
- if (!(h->group = avahi_s_entry_group_new (avahi_server, entry_group_callback, h))) {
- avahi_log_error("avahi_s_entry_group_new() failed: %s", avahi_strerror(avahi_server_errno(avahi_server)));
- return;
- }
-
- if (avahi_s_entry_group_is_empty(h->group)) {
- AvahiProtocol p;
- int err;
- const AvahiServerConfig *config;
- config = avahi_server_get_config(avahi_server);
-
- p = (h->address.proto == AVAHI_PROTO_INET && config->publish_a_on_ipv6) ||
- (h->address.proto == AVAHI_PROTO_INET6 && config->publish_aaaa_on_ipv4) ? AVAHI_PROTO_UNSPEC : h->address.proto;
-
- if ((err = avahi_server_add_address(avahi_server, h->group, AVAHI_IF_UNSPEC, p, 0, h->host, &h->address)) < 0) {
- avahi_log_error ("Static host name %s: avahi_server_add_address failure: %s", h->host, avahi_strerror(err));
- return;
- }
-
- avahi_s_entry_group_commit (h->group);
- }
-}
-
-static void remove_static_host_from_server(StaticHost *h)
-{
- if (h->group)
- avahi_s_entry_group_reset (h->group);
-}
-
-void static_hosts_add_to_server(void) {
- StaticHost *h;
-
- for (h = hosts; h; h = h->hosts_next)
- add_static_host_to_server(h);
-}
-
-void static_hosts_remove_from_server(void) {
- StaticHost *h;
-
- for (h = hosts; h; h = h->hosts_next)
- remove_static_host_from_server(h);
-}
-
-void static_hosts_load(int in_chroot) {
- FILE *f;
- unsigned int line = 0;
- StaticHost *h, *next;
- const char *filename = in_chroot ? "/hosts" : AVAHI_CONFIG_DIR "/hosts";
-
- if (!(f = fopen(filename, "r"))) {
- if (errno != ENOENT)
- avahi_log_error ("Failed to open static hosts file: %s", strerror (errno));
- return;
- }
-
- current_iteration++;
-
- while (!feof(f)) {
- unsigned int len;
- char ln[256], *s;
- char *host, *ip;
- AvahiAddress a;
-
- if (!fgets(ln, sizeof (ln), f))
- break;
-
- line++;
-
- /* Find the start of the line, ignore whitespace */
- s = ln + strspn(ln, " \t");
- /* Set the end of the string to NULL */
- s[strcspn(s, "#\r\n")] = 0;
-
- /* Ignore blank lines */
- if (*s == 0)
- continue;
-
- /* Read the first string (ip) up to the next whitespace */
- len = strcspn(s, " \t");
- ip = avahi_strndup(s, len);
-
- /* Skip past it */
- s += len;
-
- /* Find the next token */
- s += strspn(s, " \t");
- len = strcspn(s, " \t");
- host = avahi_strndup(s, len);
-
- if (*host == 0)
- {
- avahi_log_error("%s:%d: Error, unexpected end of line!", filename, line);
- avahi_free(host);
- avahi_free(ip);
- goto fail;
- }
-
- /* Skip over the host */
- s += len;
-
- /* Skip past any more spaces */
- s += strspn(s, " \t");
-
- /* Anything left? */
- if (*s != 0) {
- avahi_log_error ("%s:%d: Junk on the end of the line!", filename, line);
- avahi_free(host);
- avahi_free(ip);
- goto fail;
- }
-
- if (!avahi_address_parse(ip, AVAHI_PROTO_UNSPEC, &a)) {
- avahi_log_error("Static host name %s: failed to parse address %s", host, ip);
- avahi_free(host);
- avahi_free(ip);
- goto fail;
- }
-
- avahi_free(ip);
-
- if ((h = static_host_find(host, &a)))
- avahi_free(host);
- else {
- h = static_host_new();
- h->host = host;
- h->address = a;
-
- avahi_log_info("Loading new static hostname %s.", h->host);
- }
-
- h->iteration = current_iteration;
- }
-
- for (h = hosts; h; h = next) {
- next = h->hosts_next;
-
- if (h->iteration != current_iteration) {
- avahi_log_info("Static hostname %s vanished, removing.", h->host);
- static_host_free(h);
- }
- }
-
-fail:
-
- fclose(f);
-}
-
-void static_hosts_free_all (void)
-{
- while(hosts)
- static_host_free(hosts);
-}
projects / catta / blobdiff