Sanitize RA values less

[odhcp6c.git] / src / script.c

diff --git a/src/script.c b/src/script.c
index 98fc6e9989bcf3fa3a206cffc998c0ec4d486c46..2c342163b364f014bd99e1af5fb5bb8b8a7e3ebc 100644 (file)
--- a/src/script.c
+++ b/src/script.c
@@ -115,30 +115,6 @@ static void fqdn_to_env(const char *name, const uint8_t *fqdn, size_t len)
        putenv(buf);
 }
 
-
-static void fqdn_to_ip_env(const char *name, const uint8_t *fqdn, size_t len)
-{
-       size_t buf_len = strlen(name);
-       char *buf = realloc(NULL, INET6_ADDRSTRLEN + buf_len + 3);
-       memcpy(buf, name, buf_len);
-       buf[buf_len++] = '=';
-
-       char namebuf[256];
-       if (dn_expand(fqdn, fqdn + len, fqdn, namebuf, sizeof(namebuf)) <= 0)
-               return;
-
-       struct addrinfo hints = {.ai_family = AF_INET6}, *r;
-       if (getaddrinfo(namebuf, NULL, &hints, &r))
-               return;
-
-       struct sockaddr_in6 *sin6 = (struct sockaddr_in6*)r->ai_addr;
-       inet_ntop(AF_INET6, &sin6->sin6_addr, &buf[buf_len], INET6_ADDRSTRLEN);
-
-       freeaddrinfo(r);
-       putenv(buf);
-}
-
-
 static void bin_to_env(uint8_t *opts, size_t len)
 {
        uint8_t *oend = opts + len, *odata;
@@ -208,6 +184,15 @@ static void entry_to_env(const char *name, const void *data, size_t len, enum en
 }
 
 
+static void int_to_env(const char *name, int value)
+{
+       size_t len = 12 + strlen(name);
+       char *buf = realloc(NULL, len);
+       snprintf(buf, len, "%s=%d", name, value);
+       putenv(buf);
+}
+
+
 static void s46_to_env_portparams(const uint8_t *data, size_t len, FILE *fp)
 {
        uint8_t *odata;
@@ -228,6 +213,9 @@ static void s46_to_env(enum odhcp6c_state state, const uint8_t *data, size_t len
        const char *name = (state == STATE_S46_MAPE) ? "MAPE" :
                        (state == STATE_S46_MAPT) ? "MAPT" : "LW4O6";
 
+       if (len == 0)
+               return;
+
        char *str;
        size_t strsize;
 
@@ -372,7 +360,6 @@ void script_call(const char *status)
                fqdn_to_env("DOMAINS", search, search_len);
                fqdn_to_env("SIP_DOMAIN", sip_fqdn, sip_fqdn_len);
                fqdn_to_env("AFTR", aftr_name, aftr_name_len);
-               fqdn_to_ip_env("AFTR_IP", aftr_name, aftr_name_len);
                ipv6_to_env("CER", cer, cer_len / sizeof(*cer));
                s46_to_env(STATE_S46_MAPE, s46_mape, s46_mape_len);
                s46_to_env(STATE_S46_MAPT, s46_mapt, s46_mapt_len);
@@ -388,6 +375,11 @@ void script_call(const char *status)
                entry_to_env("RA_ROUTES", ra_route, ra_route_len, ENTRY_ROUTE);
                entry_to_env("RA_DNS", ra_dns, ra_dns_len, ENTRY_HOST);
 
+               int_to_env("RA_HOPLIMIT", ra_conf_hoplimit(0));
+               int_to_env("RA_MTU", ra_conf_mtu(0));
+               int_to_env("RA_REACHABLE", ra_conf_reachable(0));
+               int_to_env("RA_RETRANSMIT", ra_conf_retransmit(0));
+
                char *buf = malloc(10 + passthru_len * 2);
                strncpy(buf, "PASSTHRU=", 10);
                script_hexlify(&buf[9], passthru, passthru_len);