static bool write_chunk_sqlite(const unsigned char *chunk,
const unsigned char *digest, void *db_info_ptr)
{
static const char sql[] =
"INSERT OR IGNORE INTO chunk(hash, data) VALUES(?,?)";
struct db_info *db_info = db_info_ptr;
sqlite3_stmt *stmt;
int err;
lock_db(db_info);
err = sqlite3_prepare(db_info->db, sql, -1, &stmt, 0);
if (err != SQLITE_OK) {
ERROR("sqlite3_prepare failed: %s\n",
sqlite3_errmsg(db_info->db));
unlock_db(db_info);
return false;
}
sqlite3_bind_text(stmt, 1, digest_string(digest), -1, SQLITE_STATIC);
sqlite3_bind_blob(stmt, 2, chunk, CHUNK_SIZE, SQLITE_STATIC);
err = sqlite3_step(stmt);
assert(err != SQLITE_ROW);
if (sqlite3_finalize(stmt) != SQLITE_OK) {
ERROR("sqlite3_finalize failed: %s\n",
sqlite3_errmsg(db_info->db));
unlock_db(db_info);
return false;
}
unlock_db(db_info);
return true;
}
/*
* Leave debugger.
*/
void
db_leave()
{
int mycpu = cpu_number();
/*
* If continuing, give up debugger
*/
if (db_run_mode == STEP_CONTINUE)
db_cpu = -1;
/*
* If I am a slave, drop my slave count.
*/
if (db_slave[mycpu])
db_slave[mycpu]--;
if (db_enter_debug)
db_printf("db_leave: cpu %d[%d], db_cpu %d, run_mode %d\n",
mycpu, db_slave[mycpu], db_cpu, db_run_mode);
/*
* Unlock debugger.
*/
unlock_db();
/*
* Drop recursive entry count.
*/
db_active[mycpu]--;
}
void mp_bundle_terminated()
{
TDB_DATA key;
bundle_terminating = 1;
upper_layers_down(pcb);
notice("Connection terminated.");
#if PPP_STATS_SUPPORT
print_link_stats();
#endif /* PPP_STATS_SUPPORT */
if (!demand) {
remove_pidfiles();
script_unsetenv("IFNAME");
}
lock_db();
destroy_bundle();
iterate_bundle_links(sendhup);
key.dptr = blinks_id;
key.dsize = strlen(blinks_id);
tdb_delete(pppdb, key);
unlock_db();
new_phase(PPP_PHASE_DEAD);
doing_multilink = 0;
multilink_master = 0;
}
/*
* switch to another cpu
*/
void
db_on(int cpu)
{
/*
* Save ddb global variables
*/
DB_SAVE_CTXT();
/*
* Don`t do if bad CPU number.
* CPU must also be spinning in db_entry.
*/
if (cpu < 0 || cpu >= NCPUS || !db_active[cpu])
return;
/*
* Give debugger to that CPU
*/
db_cpu = cpu;
unlock_db();
/*
* Wait for it to come back again
*/
lock_db();
/*
* Restore ddb globals
*/
DB_RESTORE_CTXT();
if (db_cpu == -1) /* someone continued */
db_continue_cmd(0, 0, 0, "");
}
static bool read_chunk_sqlite(unsigned char *chunk, const unsigned char *digest,
void *db_info_ptr)
{
static const char sql[] = "SELECT data FROM chunk WHERE hash = ?";
struct db_info *db_info = db_info_ptr;
sqlite3_stmt *stmt;
int err;
bool status = false;
lock_db(db_info);
err = sqlite3_prepare(db_info->db, sql, -1, &stmt, 0);
if (err != SQLITE_OK) {
ERROR("sqlite3_prepare failed: %d\n",
sqlite3_errmsg(db_info->db));
unlock_db(db_info);
return false;
}
TRACE("%s\n", digest_string(digest));
sqlite3_bind_text(stmt, 1, digest_string(digest), -1, SQLITE_STATIC);
err = sqlite3_step(stmt);
if (err != SQLITE_ROW) {
ERROR("sqlite3_step failed: %s\n",
sqlite3_errmsg(db_info->db));
} else if (sqlite3_column_bytes(stmt, 0) != CHUNK_SIZE) {
ERROR("sqlite3 query returned %d bytes instead of %d.\n",
sqlite3_column_bytes(stmt, 0), CHUNK_SIZE);
} else {
TRACE("sqlite3 query got chunk.\n");
memcpy(chunk, sqlite3_column_blob(stmt, 0), CHUNK_SIZE);
status = true;
}
sqlite3_finalize(stmt);
unlock_db(db_info);
return status;
}
void mp_exit_bundle()
{
lock_db();
remove_bundle_link();
unlock_db();
}
/*
* Make a new bundle or join us to an existing bundle
* if we are doing multilink.
*/
int
mp_join_bundle()
{
lcp_options *go = &lcp_gotoptions[0];
lcp_options *ho = &lcp_hisoptions[0];
lcp_options *ao = &lcp_allowoptions[0];
int unit, pppd_pid;
int l, mtu;
char *p;
TDB_DATA key, pid, rec;
if (doing_multilink) {
/* have previously joined a bundle */
if (!go->neg_mrru || !ho->neg_mrru) {
notice("oops, didn't get multilink on renegotiation");
lcp_close(pcb, "multilink required");
return 0;
}
/* XXX should check the peer_authname and ho->endpoint
are the same as previously */
return 0;
}
if (!go->neg_mrru || !ho->neg_mrru) {
/* not doing multilink */
if (go->neg_mrru)
notice("oops, multilink negotiated only for receive");
mtu = ho->neg_mru? ho->mru: PPP_MRU;
if (mtu > ao->mru)
mtu = ao->mru;
if (demand) {
/* already have a bundle */
cfg_bundle(0, 0, 0, 0);
netif_set_mtu(pcb, mtu);
return 0;
}
make_new_bundle(0, 0, 0, 0);
set_ifunit(1);
netif_set_mtu(pcb, mtu);
return 0;
}
doing_multilink = 1;
/*
* Find the appropriate bundle or join a new one.
* First we make up a name for the bundle.
* The length estimate is worst-case assuming every
* character has to be quoted.
*/
l = 4 * strlen(peer_authname) + 10;
if (ho->neg_endpoint)
l += 3 * ho->endpoint.length + 8;
if (bundle_name)
l += 3 * strlen(bundle_name) + 2;
bundle_id = malloc(l);
if (bundle_id == 0)
novm("bundle identifier");
p = bundle_id;
p += slprintf(p, l-1, "BUNDLE=\"%q\"", peer_authname);
if (ho->neg_endpoint || bundle_name)
*p++ = '/';
if (ho->neg_endpoint)
p += slprintf(p, bundle_id+l-p, "%s",
epdisc_to_str(&ho->endpoint));
if (bundle_name)
p += slprintf(p, bundle_id+l-p, "/%v", bundle_name);
/* Make the key for the list of links belonging to the bundle */
l = p - bundle_id;
blinks_id = malloc(l + 7);
if (blinks_id == NULL)
novm("bundle links key");
slprintf(blinks_id, l + 7, "BUNDLE_LINKS=%s", bundle_id + 7);
/*
* For demand mode, we only need to configure the bundle
* and attach the link.
*/
mtu = LWIP_MIN(ho->mrru, ao->mru);
if (demand) {
cfg_bundle(go->mrru, ho->mrru, go->neg_ssnhf, ho->neg_ssnhf);
netif_set_mtu(pcb, mtu);
script_setenv("BUNDLE", bundle_id + 7, 1);
return 0;
}
/*
* Check if the bundle ID is already in the database.
*/
unit = -1;
lock_db();
key.dptr = bundle_id;
key.dsize = p - bundle_id;
pid = tdb_fetch(pppdb, key);
if (pid.dptr != NULL) {
/* bundle ID exists, see if the pppd record exists */
rec = tdb_fetch(pppdb, pid);
if (rec.dptr != NULL && rec.dsize > 0) {
/* make sure the string is null-terminated */
rec.dptr[rec.dsize-1] = 0;
/* parse the interface number */
parse_num(rec.dptr, "IFNAME=ppp", &unit);
/* check the pid value */
if (!parse_num(rec.dptr, "PPPD_PID=", &pppd_pid)
|| !process_exists(pppd_pid)
|| !owns_unit(pid, unit))
unit = -1;
free(rec.dptr);
}
free(pid.dptr);
}
if (unit >= 0) {
/* attach to existing unit */
if (bundle_attach(unit)) {
set_ifunit(0);
script_setenv("BUNDLE", bundle_id + 7, 0);
make_bundle_links(1);
unlock_db();
info("Link attached to %s", ifname);
return 1;
}
/* attach failed because bundle doesn't exist */
}
/* we have to make a new bundle */
make_new_bundle(go->mrru, ho->mrru, go->neg_ssnhf, ho->neg_ssnhf);
set_ifunit(1);
netif_set_mtu(pcb, mtu);
script_setenv("BUNDLE", bundle_id + 7, 1);
make_bundle_links(pcb);
unlock_db();
info("New bundle %s created", ifname);
multilink_master = 1;
return 0;
}
