/**
- * Copyright (C) 2012 Steven Barth <steven@midlink.org>
+ * Copyright (C) 2012-2013 Steven Barth <steven@midlink.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License v2 as published by
*/
#include <stdio.h>
+#include <netdb.h>
#include <resolv.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
+#include <signal.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <netinet/in.h>
static char *argv[4] = {NULL, NULL, NULL, NULL};
+static volatile char *delayed_call = NULL;
int script_init(const char *path, const char *ifname)
}
-void script_hexlify(char *dst, const uint8_t *src, size_t len) {
+static void script_hexlify(char *dst, const uint8_t *src, size_t len) {
for (size_t i = 0; i < len; ++i) {
*dst++ = hexdigits[src[i] >> 4];
*dst++ = hexdigits[src[i] & 0x0f];
static void fqdn_to_env(const char *name, const uint8_t *fqdn, size_t len)
{
size_t buf_len = strlen(name);
+ size_t buf_size = len + buf_len + 2;
const uint8_t *fqdn_end = fqdn + len;
char *buf = realloc(NULL, len + buf_len + 2);
memcpy(buf, name, buf_len);
buf[buf_len++] = '=';
int l = 1;
while (l > 0 && fqdn < fqdn_end) {
- l = dn_expand(fqdn, &fqdn[len], fqdn, &buf[buf_len], len);
+ l = dn_expand(fqdn, fqdn_end, fqdn, &buf[buf_len], buf_size - buf_len);
fqdn += l;
buf_len += strlen(&buf[buf_len]);
buf[buf_len++] = ' ';
}
+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;
}
}
+enum entry_type {
+ ENTRY_ADDRESS,
+ ENTRY_HOST,
+ ENTRY_ROUTE,
+ ENTRY_PREFIX
+};
-static void prefix_to_env(const char *name, const uint8_t *fqdn, size_t len)
+static void entry_to_env(const char *name, const void *data, size_t len, enum entry_type type)
{
size_t buf_len = strlen(name);
- struct dhcpv6_ia_prefix *p = NULL;
- char *buf = realloc(NULL, buf_len + 2 +
- (len / sizeof(*p)) * (INET6_ADDRSTRLEN + 32));
+ const struct odhcp6c_entry *e = data;
+ char *buf = realloc(NULL, buf_len + 2 + (len / sizeof(*e)) * 144);
memcpy(buf, name, buf_len);
buf[buf_len++] = '=';
- uint16_t otype, olen;
- uint8_t *odata;
- dhcpv6_for_each_option(fqdn, &fqdn[len], otype, olen, odata) {
- if (otype != DHCPV6_OPT_IA_PREFIX || olen + 4U < sizeof(*p))
- continue;
-
- p = (struct dhcpv6_ia_prefix*)&odata[-4];
- inet_ntop(AF_INET6, &p->addr, &buf[buf_len], INET6_ADDRSTRLEN);
+ for (size_t i = 0; i < len / sizeof(*e); ++i) {
+ inet_ntop(AF_INET6, &e[i].target, &buf[buf_len], INET6_ADDRSTRLEN);
buf_len += strlen(&buf[buf_len]);
- buf_len += snprintf(&buf[buf_len], 32, "/%hhu,%u,%u ",
- p->prefix, ntohl(p->preferred),
- ntohl(p->valid));
+ if (type != ENTRY_HOST) {
+ buf_len += snprintf(&buf[buf_len], 6, "/%hhu", e[i].length);
+ if (type == ENTRY_ROUTE) {
+ buf[buf_len++] = ',';
+ if (!IN6_IS_ADDR_UNSPECIFIED(&e[i].router)) {
+ inet_ntop(AF_INET6, &e[i].router, &buf[buf_len], INET6_ADDRSTRLEN);
+ buf_len += strlen(&buf[buf_len]);
+ }
+ buf_len += snprintf(&buf[buf_len], 24, ",%u", e[i].valid);
+ buf_len += snprintf(&buf[buf_len], 12, ",%u", e[i].priority);
+ } else {
+ buf_len += snprintf(&buf[buf_len], 24, ",%u,%u", e[i].preferred, e[i].valid);
+ }
+
+ if (type == ENTRY_PREFIX && e[i].priority) {
+ // priority and router are abused for prefix exclusion
+ buf_len += snprintf(&buf[buf_len], 12, ",excluded=");
+ inet_ntop(AF_INET6, &e[i].router, &buf[buf_len], INET6_ADDRSTRLEN);
+ buf_len += strlen(&buf[buf_len]);
+ buf_len += snprintf(&buf[buf_len], 24, "/%u", e[i].priority);
+ }
+ }
+ buf[buf_len++] = ' ';
}
+
buf[buf_len - 1] = '\0';
putenv(buf);
}
+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 (!delayed_call) {
+ delayed_call = strdup(status);
+ signal(SIGALRM, script_call_delayed);
+ alarm(timeout);
+ }
+}
+
+
void script_call(const char *status)
{
- syslog(LOG_WARNING, "State for %s changed to %s", argv[1], status);
size_t dns_len, search_len, custom_len, sntp_ip_len, sntp_dns_len;
- size_t sip_ip_len, sip_fqdn_len;
+ size_t sip_ip_len, sip_fqdn_len, aftr_name_len;
+
+ odhcp6c_expire();
+ if (delayed_call)
+ alarm(0);
struct in6_addr *dns = odhcp6c_get_state(STATE_DNS, &dns_len);
uint8_t *search = odhcp6c_get_state(STATE_SEARCH, &search_len);
uint8_t *sntp_dns = odhcp6c_get_state(STATE_SNTP_FQDN, &sntp_dns_len);
struct in6_addr *sip = odhcp6c_get_state(STATE_SIP_IP, &sip_ip_len);
uint8_t *sip_fqdn = odhcp6c_get_state(STATE_SIP_FQDN, &sip_fqdn_len);
+ uint8_t *aftr_name = odhcp6c_get_state(STATE_AFTR_NAME, &aftr_name_len);
- size_t prefix_len, lost_pd_len;
+ size_t prefix_len, address_len, ra_pref_len, ra_route_len, ra_dns_len;
uint8_t *prefix = odhcp6c_get_state(STATE_IA_PD, &prefix_len);
- uint8_t *lost_pd = odhcp6c_get_state(STATE_IA_PD_LOST, &lost_pd_len);
+ uint8_t *address = odhcp6c_get_state(STATE_IA_NA, &address_len);
+ uint8_t *ra_pref = odhcp6c_get_state(STATE_RA_PREFIX, &ra_pref_len);
+ uint8_t *ra_route = odhcp6c_get_state(STATE_RA_ROUTE, &ra_route_len);
+ uint8_t *ra_dns = odhcp6c_get_state(STATE_RA_DNS, &ra_dns_len);
// Don't set environment before forking, because env is leaky.
if (fork() == 0) {
fqdn_to_env("DOMAINS", search, search_len);
fqdn_to_env("SNTP_FQDN", sntp_dns, sntp_dns_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);
bin_to_env(custom, custom_len);
- prefix_to_env("PREFIXES", prefix, prefix_len);
- prefix_to_env("PREFIXES_LOST", lost_pd, lost_pd_len);
+ entry_to_env("PREFIXES", prefix, prefix_len, ENTRY_PREFIX);
+ entry_to_env("ADDRESSES", address, address_len, ENTRY_ADDRESS);
+ entry_to_env("RA_ADDRESSES", ra_pref, ra_pref_len, ENTRY_ADDRESS);
+ entry_to_env("RA_ROUTES", ra_route, ra_route_len, ENTRY_ROUTE);
+ entry_to_env("RA_DNS", ra_dns, ra_dns_len, ENTRY_HOST);
argv[2] = (char*)status;
execv(argv[0], argv);
}
// Delete lost prefixes and user opts
- odhcp6c_clear_state(STATE_IA_PD_LOST);
odhcp6c_clear_state(STATE_CUSTOM_OPTS);
}
projects / odhcp6c.git / blobdiff