void static_hosts_load(int in_chroot) {
FILE *f;
unsigned int line = 0;
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;
}
while (!feof(f)) {
unsigned int len;
char ln[256], *s;
char *host, *ip;
StaticHost *h;
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);
break;
}
/* 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);
break;
}
h = static_host_new();
h->host = host;
h->ip = ip;
}
fclose(f);
}
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);
}