/* _sist_fast(): offer to save passcode by mug in home directory.
*/
static void
_sist_fast(u3_noun pas, c3_l key_l)
{
c3_c ful_c[2048];
c3_c* hom_c = u3_Host.dir_c;
u3_noun gum = u3dc("scot", 'p', key_l);
c3_c* gum_c = u3r_string(gum);
u3_noun yek = u3dc("scot", 'p', pas);
c3_c* yek_c = u3r_string(yek);
printf("saving passcode in %s/.urb/code.%s\r\n", hom_c, gum_c);
printf("(for real security, write it down and delete the file...)\r\n");
{
c3_i fid_i;
snprintf(ful_c, 2048, "%s/.urb/code.%s", hom_c, gum_c);
if ( (fid_i = open(ful_c, O_CREAT | O_TRUNC | O_WRONLY, 0600)) < 0 ) {
uL(fprintf(uH, "fast: could not save %s\n", ful_c));
u3_lo_bail();
}
write(fid_i, yek_c, strlen(yek_c));
close(fid_i);
}
free(gum_c);
u3z(gum);
free(yek_c);
u3z(yek);
}
/* u3_sist_boot(): restore or create.
*/
void
u3_sist_boot(void)
{
// uL(fprintf(uH, "sist: booting\n"));
if ( c3y == u3_Host.ops_u.nuu ) {
u3_noun pig = u3_none;
if ( 0 == u3_Host.ops_u.imp_c ) {
c3_c get_c[2049];
snprintf(get_c, 2048, "%s/.urb/get", u3_Host.dir_c);
if ( 0 == access(get_c, 0) ) {
uL(fprintf(uH, "pier: already built\n"));
u3_lo_bail();
}
u3_noun ten = _sist_zen();
uL(fprintf(uH, "generating 2048-bit RSA pair...\n"));
pig = u3nq(c3__make, u3_nul, 11, u3nc(ten, u3_Host.ops_u.fak));
}
else {
u3_noun imp = u3i_string(u3_Host.ops_u.imp_c);
u3_noun whu = u3dc("slaw", 'p', u3k(imp));
if ( (u3_nul == whu) ) {
fprintf(stderr, "czar: incorrect format\r\n");
u3_lo_bail();
}
else {
u3_noun gen = u3_nul;
u3_noun gun = u3_nul;
if (c3n == u3_Host.ops_u.fak) {
gen = _sist_text("generator");
gun = u3dc("slaw", c3__uw, gen);
if ( u3_nul == gun ) {
fprintf(stderr, "czar: incorrect format\r\n");
u3_lo_bail();
}
}
else {
gun = u3nc(u3_nul, u3_nul);
}
pig = u3nq(c3__sith,
u3k(u3t(whu)),
u3k(u3t(gun)),
u3_Host.ops_u.fak);
u3z(whu); u3z(gun);
}
u3z(imp);
}
_sist_make(pig);
}
else {
_sist_rest();
}
}
/* _http_pox_to_noun(): translate srv/con/req to path noun (pox).
*/
static u3_noun
_http_pox_to_noun(c3_w sev_l, c3_w coq_l, c3_w seq_l)
{
return
u3nt(
u3_blip,
c3__http,
u3nq(u3dc("scot", c3_s2('u','v'), sev_l),
u3dc("scot", c3_s2('u','d'), coq_l),
u3dc("scot", c3_s2('u','d'), seq_l),
u3_nul));
}
/* _term_close_cb(): free terminal.
*/
static void
_term_close_cb(uv_handle_t* han_t)
{
u3_utty* tty_u = (void*) han_t;
if ( u3_Host.uty_u == tty_u ) {
u3_Host.uty_u = tty_u->nex_u;
}
else {
u3_utty* uty_u;
for (uty_u = u3_Host.uty_u; uty_u; uty_u = uty_u->nex_u ) {
if ( uty_u->nex_u == tty_u ) {
uty_u->nex_u = tty_u->nex_u;
break;
}
}
}
{
u3_noun tid = u3dc("scot", c3__ud, tty_u->tid_l);
u3_noun pax = u3nq(u3_blip, c3__term, tid, u3_nul);
u3v_plan(u3k(pax), u3nc(c3__hook, u3_nul));
u3z(pax);
}
free(tty_u);
}
/* _term_io_belt(): send belt.
*/
static void
_term_io_belt(u3_utty* uty_u, u3_noun blb)
{
u3_noun tid = u3dc("scot", c3__ud, uty_u->tid_l);
u3_noun pax = u3nq(u3_blip, c3__term, tid, u3_nul);
u3v_plan(pax, u3nc(c3__belt, blb));
}
/* _sist_fatt(): stretch a 64-bit passcode to make a 128-bit key.
*/
static u3_noun
_sist_fatt(c3_l sal_l, u3_noun pas)
{
c3_w i_w;
u3_noun key = pas;
// XX use scrypt() - this is a stupid iterated hash
//
for ( i_w = 0; i_w < 32768; i_w++ ) {
key = u3dc("shaf", sal_l, key);
}
return key;
}
/* u3_term_ef_ticket(): initial effects for new ticket.
*/
void
u3_term_ef_ticket(c3_c* who_c, c3_c* tic_c)
{
u3_noun pax = u3nq(u3_blip, c3__term, '1', u3_nul);
u3_noun who, tic;
u3_noun whu, tuc;
whu = u3dc("slaw", 'p', u3i_string(who_c));
if ( u3_nul == whu ) {
fprintf(stderr, "ticket: invalid planet '%s'\r\n", who_c);
exit(1);
}
else { who = u3k(u3t(whu)); u3z(whu); }
tuc = u3dc("slaw", 'p', u3i_string(tic_c));
if ( u3_nul == tuc ) {
fprintf(stderr, "ticket: invalid secret '%s'\r\n", tic_c);
exit(1);
}
else { tic = u3k(u3t(tuc)); u3z(tuc); }
u3v_plan(pax, u3nt(c3__tick, who, tic));
}
/* _sist_staf(): try to load passcode by mug from home directory.
*/
static u3_noun
_sist_staf(c3_l key_l)
{
c3_c ful_c[2048];
c3_c* hom_c = u3_Host.dir_c;
u3_noun gum = u3dc("scot", 'p', key_l);
c3_c* gum_c = u3r_string(gum);
u3_noun txt;
snprintf(ful_c, 2048, "%s/.urb/code.%s", hom_c, gum_c);
free(gum_c);
u3z(gum);
txt = u3_walk_safe(ful_c);
if ( 0 == txt ) {
uL(fprintf(uH, "staf: no passcode %s\n", ful_c));
return 0;
}
else {
// c3_c* txt_c = u3r_string(txt);
u3_noun say = u3do("slay", txt);
u3_noun pas;
if ( (u3_nul == say) ||
(u3_blip != u3h(u3t(say))) ||
('p' != u3h(u3t(u3t(say)))) )
{
uL(fprintf(uH, "staf: %s is corrupt\n", ful_c));
u3z(say);
return 0;
}
uL(fprintf(uH, "loaded passcode from %s\n", ful_c));
pas = u3k(u3t(u3t(u3t(say))));
u3z(say);
return pas;
}
}
/* _tel_opt(): telnet event sucker
*/
static void
_tel_opt(_te_nvt* nvt, telnet_byte opt, _to_evt* evt)
{
switch (evt->type)
{
default: break;
case TELNET_EV_TELOPT_DATA:
{
_to_dvt* dv = (_to_dvt*)evt;
u3_utel* tel_u;
u3_noun pax;
u3_noun blu;
u3_noun tid;
c3_s col_s;
c3_s row_s;
if ( opt != _T_NAWS ) {
return;
}
c3_assert(0 < telnet_get_userdata(nvt, (void**)&tel_u));
col_s = dv->data[1] | (dv->data[0] << 8);
row_s = dv->data[3] | (dv->data[2] << 8);
tel_u->uty_t.tat_u.siz.col_l = col_s;
tel_u->uty_t.tat_u.siz.row_l = row_s;
tid = u3dc("scot", c3__ud, tel_u->uty_t.tid_l);
pax = u3nq(u3_blip, c3__term, tid, u3_nul);
blu = u3nc(col_s, row_s);
u3v_plan(pax, u3nc(c3__blew, blu));
break;
}
}
}
void
_term_listen_cb(uv_stream_t *wax_u, int sas_i)
{
u3_utel* pty_u = calloc(1, sizeof(*pty_u));
u3_utty* tty_u = &pty_u->uty_t;
uv_tcp_init(u3L, &tty_u->wax_u);
c3_w ret_w;
if ( 0 != (ret_w = uv_accept(wax_u, (uv_stream_t*)&tty_u->wax_u)) ) {
uL(fprintf(uH, "term: accept: %s\n",
uv_strerror(ret_w)));
uv_close((uv_handle_t*)&tty_u->wax_u, NULL);
free(tty_u);
}
else {
uv_read_start((uv_stream_t*)&tty_u->wax_u,
_term_alloc,
_term_read_tn_cb);
tty_u->ufo_u.out.clear_y = (const c3_y*)"\033[H\033[J";
tty_u->ufo_u.out.el_y = (const c3_y*)"\033[K";
tty_u->ufo_u.out.ed_y = (const c3_y*)"\033[J";
tty_u->ufo_u.out.bel_y = (const c3_y*)"\007";
tty_u->ufo_u.out.cub1_y = (const c3_y*)"\010";
tty_u->ufo_u.out.cud1_y = (const c3_y*)"\033[B";
tty_u->ufo_u.out.cuu1_y = (const c3_y*)"\033[A";
tty_u->ufo_u.out.cuf1_y = (const c3_y*)"\033[C";
tty_u->ufo_u.inn.kcuu1_y = (const c3_y*)"\033[A";
tty_u->ufo_u.inn.kcud1_y = (const c3_y*)"\033[B";
tty_u->ufo_u.inn.kcuf1_y = (const c3_y*)"\033[C";
tty_u->ufo_u.inn.kcub1_y = (const c3_y*)"\033[D";
tty_u->ufo_u.inn.max_w = strlen("\033[D");
tty_u->fid_i = -1;
tty_u->tat_u.mir.lin_w = 0;
tty_u->tat_u.mir.len_w = 0;
tty_u->tat_u.mir.cus_w = 0;
tty_u->tat_u.esc.ape = c3n;
tty_u->tat_u.esc.bra = c3n;
tty_u->tat_u.fut.len_w = 0;
tty_u->tat_u.fut.wid_w = 0;
tty_u->tat_u.siz.col_l = 80;
tty_u->tat_u.siz.row_l = 25;
tty_u->tid_l = u3_Host.uty_u->tid_l + 1;
tty_u->nex_u = u3_Host.uty_u;
u3_Host.uty_u = tty_u;
pty_u->tel_u = telnet_nvt_new(tty_u, _tel_event, _tel_opt, NULL);
{
u3_noun tid = u3dc("scot", c3__ud, tty_u->tid_l);
u3_noun pax = u3nq(u3_blip, c3__term, tid, u3_nul);
u3v_plan(u3k(pax), u3nc(c3__blew, u3nc(80, 25)));
u3v_plan(u3k(pax), u3nc(c3__hail, u3_nul));
u3z(pax);
}
telnet_telopt_enable(pty_u->tel_u, _T_ECHO, TELNET_LOCAL);
telnet_telopt_enable(pty_u->tel_u, _T_CTIM, TELNET_LOCAL);
telnet_telopt_enable(pty_u->tel_u, _T_NAWS, TELNET_REMOTE);
}
}
/* _sist_rest(): restore from record, or exit.
*/
static void
_sist_rest()
{
struct stat buf_b;
c3_i fid_i;
c3_c ful_c[2048];
c3_d old_d = u3A->ent_d;
c3_d las_d = 0;
u3_noun roe = u3_nul;
u3_noun sev_l, key_l, sal_l;
u3_noun ohh = c3n;
if ( 0 != u3A->ent_d ) {
u3_noun ent;
c3_c* ent_c;
ent = u3i_chubs(1, &u3A->ent_d);
ent = u3dc("scot", c3__ud, ent);
ent_c = u3r_string(ent);
uL(fprintf(uH, "rest: checkpoint to event %s\n", ent_c));
free(ent_c);
u3z(ent);
}
// Open the fscking file. Does it even exist?
{
c3_i pig_i = O_RDWR;
#ifdef O_DSYNC
pig_i |= O_DSYNC;
#endif
snprintf(ful_c, 2048, "%s/.urb/egz.hope", u3_Host.dir_c);
if ( ((fid_i = open(ful_c, pig_i)) < 0) || (fstat(fid_i, &buf_b) < 0) ) {
uL(fprintf(uH, "rest: can't open record (%s)\n", ful_c));
u3_lo_bail();
return;
}
#ifdef F_NOCACHE
if ( -1 == fcntl(fid_i, F_NOCACHE, 1) ) {
uL(fprintf(uH, "rest: can't uncache %s: %s\n", ful_c, strerror(errno)));
u3_lo_bail();
return;
}
#endif
u3Z->lug_u.fid_i = fid_i;
u3Z->lug_u.len_d = ((buf_b.st_size + 3ULL) >> 2ULL);
}
// Check the fscking header. It's probably corrupt.
{
u3_uled led_u;
if ( sizeof(led_u) != read(fid_i, &led_u, sizeof(led_u)) ) {
uL(fprintf(uH, "record (%s) is corrupt (a)\n", ful_c));
u3_lo_bail();
}
if ( u3r_mug('f') == led_u.mag_l ) {
_sist_rest_nuu(&u3Z->lug_u, led_u, ful_c);
fid_i = u3Z->lug_u.fid_i;
}
else if (u3r_mug('g') != led_u.mag_l ) {
uL(fprintf(uH, "record (%s) is obsolete (or corrupt)\n", ful_c));
u3_lo_bail();
}
if ( led_u.kno_w != 163 ) {
// XX perhaps we should actually do something here
//
uL(fprintf(uH, "rest: (not) translating events (old %d, now %d)\n",
led_u.kno_w,
163));
}
sev_l = led_u.sev_l;
sal_l = led_u.sal_l;
key_l = led_u.key_l;
{
u3_noun old = u3dc("scot", c3__uv, sev_l);
u3_noun nuu = u3dc("scot", c3__uv, u3A->sev_l);
c3_c* old_c = u3r_string(old);
c3_c* nuu_c = u3r_string(nuu);
uL(fprintf(uH, "rest: old %s, new %s\n", old_c, nuu_c));
free(old_c); free(nuu_c);
u3z(old); u3z(nuu);
}
c3_assert(sev_l != u3A->sev_l); // 1 in 2 billion, just retry
}
// Oh, and let's hope you didn't forget the fscking passcode.
{
if ( 0 != key_l ) {
u3_noun pas = _sist_staf(key_l);
u3_noun key;
while ( 1 ) {
pas = pas ? pas : _sist_cask(u3_Host.dir_c, c3n);
key = _sist_fatt(sal_l, pas);
if ( u3r_mug(key) != key_l ) {
uL(fprintf(uH, "incorrect passcode\n"));
u3z(key);
pas = 0;
}
else {
u3z(u3A->key);
u3A->key = key;
break;
}
}
}
}
// Read in the fscking events. These are probably corrupt as well.
{
c3_d ent_d;
c3_d end_d;
u3_noun rup = c3n;
end_d = u3Z->lug_u.len_d;
ent_d = 0;
if ( -1 == lseek64(fid_i, 4ULL * end_d, SEEK_SET) ) {
fprintf(stderr, "end_d %" PRIu64 "\n", end_d);
perror("lseek");
uL(fprintf(uH, "record (%s) is corrupt (c)\n", ful_c));
u3_lo_bail();
}
while ( end_d != c3_wiseof(u3_uled) ) {
c3_d tar_d = (end_d - (c3_d)c3_wiseof(u3_ular));
u3_ular lar_u;
c3_w* img_w;
u3_noun ron;
// uL(fprintf(uH, "rest: reading event at %" PRIx64 "\n", end_d));
if ( -1 == lseek64(fid_i, 4ULL * tar_d, SEEK_SET) ) {
uL(fprintf(uH, "record (%s) is corrupt (d)\n", ful_c));
u3_lo_bail();
}
if ( sizeof(u3_ular) != read(fid_i, &lar_u, sizeof(u3_ular)) ) {
uL(fprintf(uH, "record (%s) is corrupt (e)\n", ful_c));
u3_lo_bail();
}
if ( lar_u.syn_w != u3r_mug((c3_w)tar_d) ) {
if ( c3n == rup ) {
uL(fprintf(uH, "corruption detected; attempting to fix\n"));
rup = c3y;
}
uL(fprintf(uH, "lar:%x mug:%x\n", lar_u.syn_w, u3r_mug((c3_w)tar_d)));
end_d--; u3Z->lug_u.len_d--;
continue;
}
else if ( c3y == rup ) {
uL(fprintf(uH, "matched at %x\n", lar_u.syn_w));
rup = c3n;
}
if ( lar_u.ent_d == 0 ) {
ohh = c3y;
}
#if 0
uL(fprintf(uH, "log: read: at %d, %d: lar ent %" PRIu64 ", len %d, mug %x\n",
(tar_w - lar_u.len_w),
tar_w,
lar_u.ent_d,
lar_u.len_w,
lar_u.mug_w));
#endif
if ( end_d == u3Z->lug_u.len_d ) {
ent_d = las_d = lar_u.ent_d;
}
else {
if ( lar_u.ent_d != (ent_d - 1ULL) ) {
uL(fprintf(uH, "record (%s) is corrupt (g)\n", ful_c));
uL(fprintf(uH, "lar_u.ent_d %" PRIx64 ", ent_d %" PRIx64 "\n", lar_u.ent_d, ent_d));
u3_lo_bail();
}
ent_d -= 1ULL;
}
end_d = (tar_d - (c3_d)lar_u.len_w);
if ( ent_d < old_d ) {
// XX this could be a break if we didn't want to see the sequence
// number of the first event.
continue;
}
img_w = c3_malloc(4 * lar_u.len_w);
if ( -1 == lseek64(fid_i, 4ULL * end_d, SEEK_SET) ) {
uL(fprintf(uH, "record (%s) is corrupt (h)\n", ful_c));
u3_lo_bail();
}
if ( (4 * lar_u.len_w) != read(fid_i, img_w, (4 * lar_u.len_w)) ) {
uL(fprintf(uH, "record (%s) is corrupt (i)\n", ful_c));
u3_lo_bail();
}
ron = u3i_words(lar_u.len_w, img_w);
free(img_w);
if ( lar_u.mug_w !=
u3r_mug_both(u3r_mug(ron),
u3r_mug_both(u3r_mug(lar_u.tem_w),
u3r_mug(lar_u.typ_w))) )
{
uL(fprintf(uH, "record (%s) is corrupt (j)\n", ful_c));
u3_lo_bail();
}
if ( c3__ov != lar_u.typ_w ) {
u3z(ron);
continue;
}
if ( u3A->key ) {
u3_noun dep;
dep = u3dc("de:crua", u3k(u3A->key), ron);
if ( c3n == u3du(dep) ) {
uL(fprintf(uH, "record (%s) is corrupt (k)\n", ful_c));
u3_lo_bail();
}
else {
ron = u3k(u3t(dep));
u3z(dep);
}
}
roe = u3nc(u3ke_cue(ron), roe);
}
u3A->ent_d = c3_max(las_d + 1ULL, old_d);
}
if ( u3_nul == roe ) {
// Nothing in the log that was not also in the checkpoint.
//
c3_assert(u3A->ent_d == old_d);
if ( las_d + 1 != old_d ) {
uL(fprintf(uH, "checkpoint and log disagree! las:%" PRIu64 " old:%" PRIu64 "\n",
las_d + 1, old_d));
uL(fprintf(uH, "Some events appear to be missing from the log.\n"
"Please contact the authorities, "
"and do not delete your pier!\n"));
u3_lo_bail();
}
}
else {
u3_noun rou = roe;
c3_w xno_w;
// Execute the fscking things. This is pretty much certain to crash.
//
uL(fprintf(uH, "rest: replaying through event %" PRIu64 "\n", las_d));
fprintf(uH, "---------------- playback starting----------------\n");
xno_w = 0;
while ( u3_nul != roe ) {
u3_noun i_roe = u3h(roe);
u3_noun t_roe = u3t(roe);
u3_noun now = u3h(i_roe);
u3_noun ovo = u3t(i_roe);
u3v_time(u3k(now));
if ( (c3y == u3_Host.ops_u.vno) &&
( (c3__veer == u3h(u3t(ovo)) ||
(c3__vega == u3h(u3t(ovo)))) ) )
{
fprintf(stderr, "replay: skipped veer\n");
}
else if ( c3y == u3_Host.ops_u.fog &&
u3_nul == t_roe ) {
fprintf(stderr, "replay: -Xwtf, skipped last event\n");
}
else {
_sist_sing(u3k(ovo));
fputc('.', stderr);
}
// fprintf(stderr, "playback: sing: %d\n", xno_w));
roe = t_roe;
xno_w++;
if ( 0 == (xno_w % 1000) ) {
uL(fprintf(uH, "{%d}\n", xno_w));
// u3_lo_grab("rest", rou, u3_none);
}
}
u3z(rou);
}
uL(fprintf(stderr, "\n---------------- playback complete----------------\n"));
#if 0
// If you see this error, your record is totally fscking broken!
// Which probably serves you right. Please consult a consultant.
{
if ( u3_nul == u3A->own ) {
uL(fprintf(uH, "record did not install a master!\n"));
u3_lo_bail();
}
u3A->our = u3k(u3h(u3A->own));
u3A->pod = u3dc("scot", 'p', u3k(u3A->our)));
}
// Now, who the fsck are you? No, really.
{
u3_noun who;
c3_c* fil_c;
c3_c* who_c;
if ( (fil_c = strrchr(u3_Host.dir_c, '/')) ) {
fil_c++;
} else fil_c = u3_Host.dir_c;
who = u3dc("scot", 'p', u3k(u3A->our)));
who_c = u3r_string(who);
u3z(who);
if ( strncmp(fil_c, who_c + 1, strlen(fil_c)) ) {
uL(fprintf(uH, "record master (%s) does not match filename!\n", who_c));
u3_lo_bail();
}
free(who_c);
}
#endif
// Increment sequence numbers. New logs start at 1.
if ( c3y == ohh ) {
uL(fprintf(uH, "rest: bumping ent_d, don't panic.\n"));
u3_ular lar_u;
c3_d end_d;
c3_d tar_d;
u3A->ent_d++;
end_d = u3Z->lug_u.len_d;
while ( end_d != c3_wiseof(u3_uled) ) {
tar_d = end_d - c3_wiseof(u3_ular);
if ( -1 == lseek64(fid_i, 4ULL * tar_d, SEEK_SET) ) {
uL(fprintf(uH, "bumping sequence numbers failed (a)\n"));
u3_lo_bail();
}
if ( sizeof(lar_u) != read(fid_i, &lar_u, sizeof(lar_u)) ) {
uL(fprintf(uH, "bumping sequence numbers failed (b)\n"));
u3_lo_bail();
}
lar_u.ent_d++;
if ( -1 == lseek64(fid_i, 4ULL * tar_d, SEEK_SET) ) {
uL(fprintf(uH, "bumping sequence numbers failed (c)\n"));
u3_lo_bail();
}
if ( sizeof(lar_u) != write(fid_i, &lar_u, sizeof(lar_u)) ) {
uL(fprintf(uH, "bumping sequence numbers failed (d)\n"));
u3_lo_bail();
}
end_d = tar_d - lar_u.len_w;
}
}
// Rewrite the header. Will probably corrupt the record.
{
u3_uled led_u;
led_u.mag_l = u3r_mug('g');
led_u.sal_l = sal_l;
led_u.sev_l = u3A->sev_l;
led_u.key_l = u3A->key ? u3r_mug(u3A->key) : 0;
led_u.kno_w = 163; // may need actual translation!
led_u.tno_l = 1;
if ( (-1 == lseek64(fid_i, 0, SEEK_SET)) ||
(sizeof(led_u) != write(fid_i, &led_u, sizeof(led_u))) )
{
uL(fprintf(uH, "record (%s) failed to rewrite\n", ful_c));
u3_lo_bail();
}
}
// Hey, fscker! It worked.
{
u3_term_ef_boil();
}
}