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authorGravatar Christian Hesse <mail@eworm.de>2013-10-27 19:35:59 +0100
committerGravatar Christian Hesse <mail@eworm.de>2013-10-27 19:35:59 +0100
commite3debb1dfbe8b710e416b12a3d7aa9ad8decc423 (patch)
treee210cb0d274789821d6b5f8afb266bb9bc81658b
parent49a1afd9c6ac6d95805698630429e010f69649dd (diff)
downloadpacredir-e3debb1dfbe8b710e416b12a3d7aa9ad8decc423.tar.gz
pacredir-e3debb1dfbe8b710e416b12a3d7aa9ad8decc423.tar.zst
ignore self and prepare for pacdbserve
-rw-r--r--pacredir.c50
1 files changed, 42 insertions, 8 deletions
diff --git a/pacredir.c b/pacredir.c
index d465a8c..244ffc6 100644
--- a/pacredir.c
+++ b/pacredir.c
@@ -32,14 +32,27 @@
#define SERVICE "_pacserve._tcp"
#define BADTIME 60 * 10
+/* services */
+struct services {
+ /* http port */
+ uint16_t port;
+ /* unix timestamp of last bad request */
+ __time_t bad;
+};
+
/* hosts */
struct hosts {
/* host name */
char * host;
+#if 0
/* http port */
uint16_t port;
/* unix timestamp of last bad request */
__time_t bad;
+#endif
+ /* port and bad time for services */
+ struct services pacserve;
+ struct services pacdbserve;
/* true if host is offline */
uint8_t offline;
/* pointer to next struct element */
@@ -49,6 +62,7 @@ struct hosts {
/* global variables */
struct hosts * hosts = NULL;
static AvahiSimplePoll *simple_poll = NULL;
+char * localname = NULL;
/*** resolve_callback_new ***
* Called whenever a service has been resolved successfully or timed out */
@@ -67,6 +81,10 @@ static void resolve_callback_new(AvahiServiceResolver *r, AVAHI_GCC_UNUSED Avahi
break;
case AVAHI_RESOLVER_FOUND: {
+ /* ignore self */
+ if (strcmp(host, localname) == 0)
+ goto out;
+
while (tmphosts->host != NULL) {
if (strcmp(tmphosts->host, host) == 0) {
# if defined DEBUG
@@ -79,8 +97,8 @@ static void resolve_callback_new(AvahiServiceResolver *r, AVAHI_GCC_UNUSED Avahi
}
printf("Adding host: %s, port %d\n", host, port);
tmphosts->host = strdup(host);
- tmphosts->port = port;
- tmphosts->bad = 0;
+ tmphosts->pacserve.port = port;
+ tmphosts->pacserve.bad = 0;
tmphosts->offline = 0;
tmphosts->next = realloc(tmphosts->next, sizeof(struct hosts));
tmphosts = tmphosts->next;
@@ -270,19 +288,19 @@ static int ahc_echo(void * cls, struct MHD_Connection * connection, const char *
gettimeofday(&tv, NULL);
/* skip host if offline or had a bad request within last BADTIME seconds */
- if (tmphosts->offline == 1 || tmphosts->bad + BADTIME > tv.tv_sec) {
+ if (tmphosts->offline == 1 || tmphosts->pacserve.bad + BADTIME > tv.tv_sec) {
tmphosts = tmphosts->next;
continue;
}
url = malloc(10 + strlen(tmphosts->host) + 5 + strlen(basename));
- sprintf(url, "http://%s:%d/%s", tmphosts->host, tmphosts->port, basename);
+ sprintf(url, "http://%s:%d/%s", tmphosts->host, tmphosts->pacserve.port, basename);
printf("Trying %s\n", url);
- if ((http_code = get_http_code(tmphosts->host, tmphosts->port, url)) == MHD_HTTP_OK)
+ if ((http_code = get_http_code(tmphosts->host, tmphosts->pacserve.port, url)) == MHD_HTTP_OK)
break;
else if (http_code == -1)
- tmphosts->bad = tv.tv_sec;
+ tmphosts->pacserve.bad = tv.tv_sec;
tmphosts = tmphosts->next;
}
@@ -329,6 +347,15 @@ void sighup_callback(int signal) {
}
}
+/*** get_localname ***/
+char * get_localname(const char * hostname, const char * domainname) {
+ char * name;
+
+ name = malloc(strlen(hostname) + strlen(domainname) + 2 /* '.' and null char */);
+ sprintf(name, "%s.%s", hostname, domainname);
+ return name;
+}
+
/*** main ***/
int main(int argc, char ** argv) {
AvahiClient *client = NULL;
@@ -343,8 +370,8 @@ int main(int argc, char ** argv) {
/* allocate first struct element as dummy */
hosts = malloc(sizeof(struct hosts));
hosts->host = NULL;
- hosts->port = 0;
- hosts->bad = 0;
+ hosts->pacserve.port = 0;
+ hosts->pacserve.bad = 0;
hosts->offline = 0;
hosts->next = NULL;
@@ -369,6 +396,10 @@ int main(int argc, char ** argv) {
goto fail;
}
+ /* get the local hostname used by avahi */
+ localname = get_localname(avahi_client_get_host_name(client), avahi_client_get_domain_name(client));
+
+ /* start http server */
if ((mhd = MHD_start_daemon(MHD_USE_THREAD_PER_CONNECTION, PORT, NULL, NULL, &ahc_echo, NULL, MHD_OPTION_END)) == NULL) {
fprintf(stderr, "Could not start daemon on port %d.\n", PORT);
return EXIT_FAILURE;
@@ -395,6 +426,9 @@ fail:
hosts = tmphosts;
}
+ if (localname)
+ free(localname);
+
if (sb)
avahi_service_browser_free(sb);