Ensure signal-safety of signal handlers

[odhcp6c.git] / src / script.c

diff --git a/src/script.c b/src/script.c
index d443ede71a229e41ca0da7c0623186bdfa0ae01e..644f61f8a697921a2a21da98c1b67ccc045ab4a1 100644 (file)
--- a/src/script.c
+++ b/src/script.c
@@ -41,8 +41,6 @@ static const int8_t hexvals[] = {
 
 
 static char *argv[4] = {NULL, NULL, NULL, NULL};
-static volatile char *delayed_call = NULL;
-static bool dont_delay = false;
 
 
 int script_init(const char *path, const char *ifname)
@@ -332,37 +330,15 @@ static void s46_to_env(enum odhcp6c_state state, const uint8_t *data, size_t len
 }
 
 
-static void script_call_delayed(int signal __attribute__((unused)))
-{
-       if (delayed_call)
-               script_call((char*)delayed_call);
-}
-
-
-void script_delay_call(const char *status, int timeout)
-{
-       if (dont_delay) {
-               script_call(status);
-       } else if (!delayed_call) {
-               delayed_call = strdup(status);
-               signal(SIGALRM, script_call_delayed);
-               alarm(timeout);
-       }
-}
-
-
 void script_call(const char *status)
 {
        size_t dns_len, search_len, custom_len, sntp_ip_len, ntp_ip_len, ntp_dns_len;
-       size_t sip_ip_len, sip_fqdn_len, aftr_name_len, cer_len;
+       size_t sip_ip_len, sip_fqdn_len, aftr_name_len, cer_len, addr_len;
        size_t s46_mapt_len, s46_mape_len, s46_lw_len, passthru_len;
 
        odhcp6c_expire();
-       if (delayed_call) {
-               alarm(0);
-               dont_delay = true;
-       }
 
+       struct in6_addr *addr = odhcp6c_get_state(STATE_SERVER_ADDR, &addr_len);
        struct in6_addr *dns = odhcp6c_get_state(STATE_DNS, &dns_len);
        uint8_t *search = odhcp6c_get_state(STATE_SEARCH, &search_len);
        uint8_t *custom = odhcp6c_get_state(STATE_CUSTOM_OPTS, &custom_len);
@@ -387,6 +363,7 @@ void script_call(const char *status)
 
        // Don't set environment before forking, because env is leaky.
        if (fork() == 0) {
+               ipv6_to_env("SERVER", addr, addr_len / sizeof(*addr));
                ipv6_to_env("RDNSS", dns, dns_len / sizeof(*dns));
                ipv6_to_env("SNTP_IP", sntp, sntp_ip_len / sizeof(*sntp));
                ipv6_to_env("NTP_IP", ntp, ntp_ip_len / sizeof(*ntp));