// Copyright (c) 2002 FireBrick (Andrews & Arnold Ltd / Watchfront Ltd) - GPL licenced
// vim: sw=8 ts=8
-char const *cvs_id_l2tpns = "$Id: l2tpns.c,v 1.81 2005-02-08 01:20:38 bodea Exp $";
+char const *cvs_id_l2tpns = "$Id: l2tpns.c,v 1.82 2005-02-09 00:16:17 bodea Exp $";
#include <arpa/inet.h>
#include <assert.h>
CONFIG("l2tp_secret", l2tpsecret, STRING),
CONFIG("primary_dns", default_dns1, IPv4),
CONFIG("secondary_dns", default_dns2, IPv4),
- CONFIG("save_state", save_state, BOOL),
CONFIG("primary_radius", radiusserver[0], IPv4),
CONFIG("secondary_radius", radiusserver[1], IPv4),
CONFIG("primary_radius_port", radiusport[0], SHORT),
static void sigterm_handler(int sig);
static void sigquit_handler(int sig);
static void sigchild_handler(int sig);
-static void read_state(void);
-static void dump_state(void);
static void build_chap_response(char *challenge, uint8_t id, uint16_t challenge_length, char **challenge_response);
static void update_config(void);
static void read_config_file(void);
initrad();
initippool();
- read_state();
-
signal(SIGHUP, sighup_handler);
signal(SIGTERM, sigterm_handler);
signal(SIGINT, sigterm_handler);
static void sigterm_handler(int sig)
{
LOG(1, 0, 0, "Shutting down cleanly\n");
- if (config->save_state)
- dump_state();
-
main_quit++;
}
;
}
-static void read_state()
-{
- struct stat sb;
- int i;
- ippoolt itmp;
- FILE *f;
- char magic[sizeof(DUMP_MAGIC) - 1];
- uint32_t buf[2];
-
- if (!config->save_state)
- {
- unlink(STATEFILE);
- return ;
- }
-
- if (stat(STATEFILE, &sb) < 0)
- {
- unlink(STATEFILE);
- return ;
- }
-
- if (sb.st_mtime < (time(NULL) - 60))
- {
- LOG(0, 0, 0, "State file is too old to read, ignoring\n");
- unlink(STATEFILE);
- return ;
- }
-
- f = fopen(STATEFILE, "r");
- unlink(STATEFILE);
-
- if (!f)
- {
- LOG(0, 0, 0, "Can't read state file: %s\n", strerror(errno));
- exit(1);
- }
-
- if (fread(magic, sizeof(magic), 1, f) != 1 || strncmp(magic, DUMP_MAGIC, sizeof(magic)))
- {
- LOG(0, 0, 0, "Bad state file magic\n");
- exit(1);
- }
-
- LOG(1, 0, 0, "Reading state information\n");
- if (fread(buf, sizeof(buf), 1, f) != 1 || buf[0] > MAXIPPOOL || buf[1] != sizeof(ippoolt))
- {
- LOG(0, 0, 0, "Error/mismatch reading ip pool header from state file\n");
- exit(1);
- }
-
- if (buf[0] > ip_pool_size)
- {
- LOG(0, 0, 0, "ip pool has shrunk! state = %d, current = %d\n", buf[0], ip_pool_size);
- exit(1);
- }
-
- LOG(2, 0, 0, "Loading %u ip addresses\n", buf[0]);
- for (i = 0; i < buf[0]; i++)
- {
- if (fread(&itmp, sizeof(itmp), 1, f) != 1)
- {
- LOG(0, 0, 0, "Error reading ip %d from state file: %s\n", i, strerror(errno));
- exit(1);
- }
-
- if (itmp.address != ip_address_pool[i].address)
- {
- LOG(0, 0, 0, "Mismatched ip %d from state file: pool may only be extended\n", i);
- exit(1);
- }
-
- memcpy(&ip_address_pool[i], &itmp, sizeof(itmp));
- }
-
- if (fread(buf, sizeof(buf), 1, f) != 1 || buf[0] != MAXTUNNEL || buf[1] != sizeof(tunnelt))
- {
- LOG(0, 0, 0, "Error/mismatch reading tunnel header from state file\n");
- exit(1);
- }
-
- LOG(2, 0, 0, "Loading %u tunnels\n", MAXTUNNEL);
- if (fread(tunnel, sizeof(tunnelt), MAXTUNNEL, f) != MAXTUNNEL)
- {
- LOG(0, 0, 0, "Error reading tunnel data from state file\n");
- exit(1);
- }
-
- for (i = 0; i < MAXTUNNEL; i++)
- {
- tunnel[i].controlc = 0;
- tunnel[i].controls = NULL;
- tunnel[i].controle = NULL;
- if (*tunnel[i].hostname)
- LOG(3, 0, 0, "Created tunnel for %s\n", tunnel[i].hostname);
- }
-
- if (fread(buf, sizeof(buf), 1, f) != 1 || buf[0] != MAXSESSION || buf[1] != sizeof(sessiont))
- {
- LOG(0, 0, 0, "Error/mismatch reading session header from state file\n");
- exit(1);
- }
-
- LOG(2, 0, 0, "Loading %u sessions\n", MAXSESSION);
- if (fread(session, sizeof(sessiont), MAXSESSION, f) != MAXSESSION)
- {
- LOG(0, 0, 0, "Error reading session data from state file\n");
- exit(1);
- }
-
- for (i = 0; i < MAXSESSION; i++)
- {
- session[i].tbf_in = 0;
- session[i].tbf_out = 0;
- if (session[i].opened)
- {
- LOG(2, i, 0, "Loaded active session for user %s\n", session[i].user);
- if (session[i].ip)
- sessionsetup(session[i].tunnel, i);
- }
- }
-
- fclose(f);
- LOG(0, 0, 0, "Loaded saved state information\n");
-}
-
-static void dump_state()
-{
- FILE *f;
- uint32_t buf[2];
-
- if (!config->save_state)
- return;
-
- do
- {
- if (!(f = fopen(STATEFILE, "w")))
- break;
-
- LOG(1, 0, 0, "Dumping state information\n");
-
- if (fwrite(DUMP_MAGIC, sizeof(DUMP_MAGIC) - 1, 1, f) != 1)
- break;
-
- LOG(2, 0, 0, "Dumping %u ip addresses\n", ip_pool_size);
- buf[0] = ip_pool_size;
- buf[1] = sizeof(ippoolt);
- if (fwrite(buf, sizeof(buf), 1, f) != 1)
- break;
- if (fwrite(ip_address_pool, sizeof(ippoolt), ip_pool_size, f) != ip_pool_size)
- break;
-
- LOG(2, 0, 0, "Dumping %u tunnels\n", MAXTUNNEL);
- buf[0] = MAXTUNNEL;
- buf[1] = sizeof(tunnelt);
- if (fwrite(buf, sizeof(buf), 1, f) != 1)
- break;
- if (fwrite(tunnel, sizeof(tunnelt), MAXTUNNEL, f) != MAXTUNNEL)
- break;
-
- LOG(2, 0, 0, "Dumping %u sessions\n", MAXSESSION);
- buf[0] = MAXSESSION;
- buf[1] = sizeof(sessiont);
- if (fwrite(buf, sizeof(buf), 1, f) != 1)
- break;
- if (fwrite(session, sizeof(sessiont), MAXSESSION, f) != MAXSESSION)
- break;
-
- if (fclose(f) == 0)
- return ; // OK
- }
- while (0);
-
- LOG(0, 0, 0, "Can't write state information: %s\n", strerror(errno));
- unlink(STATEFILE);
-}
-
static void build_chap_response(char *challenge, uint8_t id, uint16_t challenge_length, char **challenge_response)
{
MD5_CTX ctx;
projects / l2tpns.git / commitdiff