mirror of
https://github.com/urbit/shrub.git
synced 2024-12-23 02:41:35 +03:00
b03519f64f
We have version control so we don't have to comment out things that we've refactored into another function. This is mainly to get rid of the false positive when I grep for U3_LIB.
1265 lines
29 KiB
C
1265 lines
29 KiB
C
/* v/sist.c
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**
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*/
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <uv.h>
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#include "all.h"
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#include "vere/vere.h"
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#if defined(U3_OS_linux)
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#include <stdio_ext.h>
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#define fpurge(fd) __fpurge(fd)
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#define DEVRANDOM "/dev/urandom"
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#else
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#define DEVRANDOM "/dev/random"
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#endif
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/* u3_sist_pack(): write a blob to disk, transferring.
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*/
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c3_d
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u3_sist_pack(c3_w tem_w, c3_w typ_w, c3_w* bob_w, c3_w len_w)
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{
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u3_ulog* lug_u = &u3Z->lug_u;
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c3_d tar_d;
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u3_ular lar_u;
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tar_d = lug_u->len_d + len_w;
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lar_u.tem_w = tem_w;
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lar_u.typ_w = typ_w;
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lar_u.syn_w = u3r_mug_d(tar_d);
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lar_u.mug_w = u3r_mug_both(u3r_mug_words(bob_w, len_w),
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u3r_mug_both(u3r_mug(lar_u.tem_w),
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u3r_mug(lar_u.typ_w)));
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lar_u.ent_d = u3A->ent_d;
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u3A->ent_d++;
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lar_u.len_w = len_w;
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if ( -1 == lseek64(lug_u->fid_i, 4ULL * tar_d, SEEK_SET) ) {
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perror("lseek");
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uL(fprintf(uH, "sist_pack: seek failed\n"));
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c3_assert(0);
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}
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if ( sizeof(lar_u) != write(lug_u->fid_i, &lar_u, sizeof(lar_u)) ) {
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perror("write");
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uL(fprintf(uH, "sist_pack: write failed\n"));
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c3_assert(0);
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}
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if ( -1 == lseek64(lug_u->fid_i, 4ULL * lug_u->len_d, SEEK_SET) ) {
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perror("lseek");
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uL(fprintf(uH, "sist_pack: seek failed\n"));
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c3_assert(0);
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}
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#if 0
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uL(fprintf(uH, "sist_pack: write %" PRIu64 ", %" PRIu64 ": lar ent %" PRIu64 ", len %d, mug %x\n",
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lug_u->len_d,
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tar_d,
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lar_u.ent_d,
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lar_u.len_w,
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lar_u.mug_w));
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#endif
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if ( (4 * len_w) != write(lug_u->fid_i, bob_w, (4 * len_w)) ) {
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perror("write");
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uL(fprintf(uH, "sist_pack: write failed\n"));
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c3_assert(0);
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}
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lug_u->len_d += (c3_d)(lar_u.len_w + c3_wiseof(lar_u));
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free(bob_w);
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// Sync. Or, what goes by sync.
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{
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fsync(lug_u->fid_i); // fsync is almost useless, F_FULLFSYNC too slow
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#if defined(U3_OS_linux)
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fdatasync(lug_u->fid_i);
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#elif defined(U3_OS_osx)
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fcntl(lug_u->fid_i, F_FULLFSYNC);
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#elif defined(U3_OS_bsd)
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fsync(lug_u->fid_i);
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#else
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# error "port: datasync"
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#endif
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}
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return u3A->ent_d;
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}
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/* u3_sist_put(): moronic key-value store put.
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*/
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void
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u3_sist_put(const c3_c* key_c, const c3_y* val_y, size_t siz_i)
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{
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c3_c ful_c[2048];
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c3_i ret_i;
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c3_i fid_i;
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ret_i = snprintf(ful_c, 2048, "%s/.urb/sis/_%s", u3_Host.dir_c, key_c);
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c3_assert(ret_i < 2048);
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if ( (fid_i = open(ful_c, O_CREAT | O_TRUNC | O_WRONLY, 0600)) < 0 ) {
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uL(fprintf(uH, "sist: could not put %s\n", key_c));
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perror("open");
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u3_lo_bail();
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}
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if ( (ret_i = write(fid_i, val_y, siz_i)) != siz_i ) {
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uL(fprintf(uH, "sist: could not write %s\n", key_c));
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if ( ret_i < 0 ) {
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perror("write");
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}
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u3_lo_bail();
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}
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ret_i = c3_sync(fid_i);
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if ( ret_i < 0 ) {
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perror("sync");
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}
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ret_i = close(fid_i);
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c3_assert(0 == ret_i);
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}
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/* u3_sist_has(): moronic key-value store existence check.
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*/
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ssize_t
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u3_sist_has(const c3_c* key_c)
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{
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c3_c ful_c[2048];
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c3_i ret_i;
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struct stat sat_u;
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ret_i = snprintf(ful_c, 2048, "%s/.urb/sis/_%s", u3_Host.dir_c, key_c);
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c3_assert(ret_i < 2048);
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if ( (ret_i = stat(ful_c, &sat_u)) < 0 ) {
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if ( errno == ENOENT ) {
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return -1;
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}
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else {
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uL(fprintf(uH, "sist: could not stat %s\n", key_c));
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perror("stat");
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u3_lo_bail();
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}
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}
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else {
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return sat_u.st_size;
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}
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c3_assert(!"not reached");
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}
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/* u3_sist_get(): moronic key-value store get.
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*/
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void
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u3_sist_get(const c3_c* key_c, c3_y* val_y)
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{
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c3_c ful_c[2048];
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c3_i ret_i;
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c3_i fid_i;
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struct stat sat_u;
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ret_i = snprintf(ful_c, 2048, "%s/.urb/sis/_%s", u3_Host.dir_c, key_c);
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c3_assert(ret_i < 2048);
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if ( (fid_i = open(ful_c, O_RDONLY)) < 0 ) {
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uL(fprintf(uH, "sist: could not get %s\n", key_c));
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perror("open");
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u3_lo_bail();
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}
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if ( (ret_i = fstat(fid_i, &sat_u)) < 0 ) {
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uL(fprintf(uH, "sist: could not stat %s\n", key_c));
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perror("fstat");
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u3_lo_bail();
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}
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if ( (ret_i = read(fid_i, val_y, sat_u.st_size)) != sat_u.st_size ) {
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uL(fprintf(uH, "sist: could not read %s\n", key_c));
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if ( ret_i < 0 ) {
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perror("read");
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}
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u3_lo_bail();
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}
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ret_i = close(fid_i);
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c3_assert(0 == ret_i);
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}
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/* u3_sist_nil(): moronic key-value store rm.
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*/
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void
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u3_sist_nil(const c3_c* key_c)
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{
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c3_c ful_c[2048];
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c3_i ret_i;
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ret_i = snprintf(ful_c, 2048, "%s/.urb/sis/_%s", u3_Host.dir_c, key_c);
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c3_assert(ret_i < 2048);
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if ( (ret_i = unlink(ful_c)) < 0 ) {
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if ( errno == ENOENT ) {
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return;
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}
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else {
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uL(fprintf(uH, "sist: could not unlink %s\n", key_c));
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perror("unlink");
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u3_lo_bail();
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}
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}
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}
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/* _sist_suck(): past failure.
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*/
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static void
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_sist_suck(u3_noun ovo, u3_noun gon)
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{
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uL(fprintf(uH, "sing: ovum failed!\n"));
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{
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c3_c* hed_c = u3r_string(u3h(u3t(ovo)));
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uL(fprintf(uH, "fail %s\n", hed_c));
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free(hed_c);
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}
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u3_lo_punt(2, u3kb_flop(u3k(u3t(gon))));
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// u3_loom_exit();
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#if 1
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u3_lo_exit();
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exit(1);
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#else
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u3z(ovo); u3z(gon);
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#endif
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}
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/* _sist_sing(): replay ovum from the past, time already set.
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*/
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static void
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_sist_sing(u3_noun ovo)
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{
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u3_noun gon = u3m_soft(0, u3v_poke, u3k(ovo));
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if ( u3_blip != u3h(gon) ) {
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_sist_suck(ovo, gon);
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}
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else {
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u3_noun vir = u3k(u3h(u3t(gon)));
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u3_noun cor = u3k(u3t(u3t(gon)));
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u3_noun nug;
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u3z(gon);
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nug = u3v_nick(vir, cor);
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if ( u3_blip != u3h(nug) ) {
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_sist_suck(ovo, nug);
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}
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else {
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vir = u3h(u3t(nug));
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cor = u3k(u3t(u3t(nug)));
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while ( u3_nul != vir ) {
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u3_noun fex = u3h(vir);
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u3_noun fav = u3t(fex);
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if ( (c3__init == u3h(fav)) || (c3__inuk == u3h(fav)) ) {
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u3A->own = u3nc(u3k(u3t(fav)), u3A->own);
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}
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vir = u3t(vir);
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}
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u3z(nug);
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u3z(u3A->roc);
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u3A->roc = cor;
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}
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u3z(ovo);
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}
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}
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/* _sist_home(): create ship directory.
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*/
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static void
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_sist_home()
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{
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c3_c ful_c[2048];
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// Create subdirectories.
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//
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{
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mkdir(u3_Host.dir_c, 0700);
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snprintf(ful_c, 2048, "%s/.urb", u3_Host.dir_c);
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mkdir(ful_c, 0700);
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snprintf(ful_c, 2048, "%s/.urb/get", u3_Host.dir_c);
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if ( 0 != mkdir(ful_c, 0700) ) {
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perror(ful_c);
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u3_lo_bail();
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}
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snprintf(ful_c, 2048, "%s/.urb/put", u3_Host.dir_c);
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if ( 0 != mkdir(ful_c, 0700) ) {
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perror(ful_c);
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u3_lo_bail();
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}
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snprintf(ful_c, 2048, "%s/.urb/sis", u3_Host.dir_c);
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if ( 0 != mkdir(ful_c, 0700) ) {
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perror(ful_c);
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u3_lo_bail();
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}
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}
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// Copy urbit.pill.
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//
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{
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snprintf(ful_c, 2048, "cp %s %s/.urb",
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u3_Host.ops_u.pil_c, u3_Host.dir_c);
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printf("%s\r\n", ful_c);
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if ( 0 != system(ful_c) ) {
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uL(fprintf(uH, "could not %s\n", ful_c));
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u3_lo_bail();
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}
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}
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#if 1
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// Copy zod files, if we're generating a carrier.
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//
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if ( u3_Host.ops_u.imp_c ) {
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u3_unix_ef_initial_into();
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}
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#endif
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}
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/* _sist_cask(): ask for a passcode.
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*/
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static u3_noun
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_sist_cask(c3_c* dir_c, u3_noun nun)
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{
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c3_c paw_c[60];
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u3_noun key;
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uH;
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while ( 1 ) {
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printf("passcode for %s%s? ~", dir_c, (c3y == nun) ? " [none]" : "");
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paw_c[0] = 0;
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c3_fpurge(stdin);
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fgets(paw_c, 59, stdin);
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if ( '\n' == paw_c[0] ) {
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if ( c3y == nun ) {
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key = 0; break;
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}
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else {
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continue;
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}
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}
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else {
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c3_c* say_c = c3_malloc(strlen(paw_c) + 2);
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u3_noun say;
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say_c[0] = '~';
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say_c[1] = 0;
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strncat(say_c, paw_c, strlen(paw_c) - 1);
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say = u3do("slay", u3i_string(say_c));
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if ( (u3_nul == say) ||
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(u3_blip != u3h(u3t(say))) ||
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('p' != u3h(u3t(u3t(say)))) )
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{
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printf("invalid passcode\n");
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continue;
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}
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key = u3k(u3t(u3t(u3t(say))));
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u3z(say);
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break;
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}
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}
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uL(0);
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return key;
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}
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/* _sist_text(): ask for a name string.
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*/
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static u3_noun
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_sist_text(c3_c* pom_c)
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{
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c3_c paw_c[180];
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u3_noun say;
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uH;
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while ( 1 ) {
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printf("%s: ", pom_c);
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paw_c[0] = 0;
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fpurge(stdin);
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fgets(paw_c, 179, stdin);
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if ( '\n' == paw_c[0] ) {
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continue;
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}
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else {
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c3_w len_w = strlen(paw_c);
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if ( paw_c[len_w - 1] == '\n' ) {
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paw_c[len_w-1] = 0;
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}
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say = u3i_string(paw_c);
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break;
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}
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}
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uL(0);
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return say;
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}
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#if 0
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/* _sist_bask(): ask a yes or no question.
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*/
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static u3_noun
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_sist_bask(c3_c* pop_c, u3_noun may)
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{
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u3_noun yam;
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uH;
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while ( 1 ) {
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c3_c ans_c[3];
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printf("%s [y/n]? ", pop_c);
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ans_c[0] = 0;
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c3_fpurge(stdin);
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fgets(ans_c, 2, stdin);
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if ( (ans_c[0] != 'y') && (ans_c[0] != 'n') ) {
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continue;
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} else {
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yam = (ans_c[0] != 'n') ? c3y : c3n;
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break;
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}
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}
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uL(0);
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return yam;
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}
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#endif
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/* u3_sist_rand(): fill a 512-bit (16-word) buffer.
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*/
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void
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u3_sist_rand(c3_w* rad_w)
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{
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c3_i fid_i = open(DEVRANDOM, O_RDONLY);
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if ( 64 != read(fid_i, (c3_y*) rad_w, 64) ) {
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c3_assert(!"lo_rand");
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}
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close(fid_i);
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}
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/* _sist_fast(): offer to save passcode by mug in home directory.
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*/
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static void
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_sist_fast(u3_noun pas, c3_l key_l)
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{
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c3_c ful_c[2048];
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c3_c* hom_c = u3_Host.dir_c;
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u3_noun gum = u3dc("scot", 'p', key_l);
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c3_c* gum_c = u3r_string(gum);
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u3_noun yek = u3dc("scot", 'p', pas);
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c3_c* yek_c = u3r_string(yek);
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printf("saving passcode in %s/.urb/code.%s\r\n", hom_c, gum_c);
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printf("(for real security, write it down and delete the file...)\r\n");
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{
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c3_i fid_i;
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snprintf(ful_c, 2048, "%s/.urb/code.%s", hom_c, gum_c);
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if ( (fid_i = open(ful_c, O_CREAT | O_TRUNC | O_WRONLY, 0600)) < 0 ) {
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uL(fprintf(uH, "fast: could not save %s\n", ful_c));
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u3_lo_bail();
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}
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write(fid_i, yek_c, strlen(yek_c));
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close(fid_i);
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}
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free(gum_c);
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u3z(gum);
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free(yek_c);
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u3z(yek);
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}
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/* _sist_staf(): try to load passcode by mug from home directory.
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*/
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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;
|
|
}
|
|
}
|
|
|
|
/* _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;
|
|
}
|
|
|
|
/* _sist_zest(): create a new, empty record.
|
|
*/
|
|
static void
|
|
_sist_zest()
|
|
{
|
|
struct stat buf_b;
|
|
c3_i fid_i;
|
|
c3_c ful_c[8193];
|
|
c3_l sal_l;
|
|
|
|
// Create the ship directory.
|
|
//
|
|
_sist_home();
|
|
|
|
// Create the record file.
|
|
{
|
|
c3_i pig_i = O_CREAT | O_WRONLY | O_EXCL;
|
|
#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, 0600)) < 0) ||
|
|
(fstat(fid_i, &buf_b) < 0) )
|
|
{
|
|
uL(fprintf(uH, "can't create record (%s)\n", ful_c));
|
|
u3_lo_bail();
|
|
}
|
|
#ifdef F_NOCACHE
|
|
if ( -1 == fcntl(fid_i, F_NOCACHE, 1) ) {
|
|
uL(fprintf(uH, "zest: can't uncache %s: %s\n", ful_c, strerror(errno)));
|
|
u3_lo_bail();
|
|
}
|
|
#endif
|
|
u3Z->lug_u.fid_i = fid_i;
|
|
}
|
|
|
|
// Generate a 31-bit salt.
|
|
//
|
|
{
|
|
c3_w rad_w[16];
|
|
|
|
c3_rand(rad_w);
|
|
sal_l = (0x7fffffff & rad_w[0]);
|
|
}
|
|
|
|
// Create and save a passcode.
|
|
//
|
|
{
|
|
c3_w rad_w[16];
|
|
u3_noun pas;
|
|
|
|
c3_rand(rad_w);
|
|
pas = u3i_words(2, rad_w);
|
|
|
|
u3A->key = _sist_fatt(sal_l, u3k(pas));
|
|
_sist_fast(pas, u3r_mug(u3A->key));
|
|
}
|
|
|
|
// Write the header.
|
|
{
|
|
u3_uled led_u;
|
|
|
|
led_u.mag_l = u3r_mug('g');
|
|
led_u.kno_w = 163;
|
|
|
|
if ( 0 == u3A->key ) {
|
|
led_u.key_l = 0;
|
|
} else {
|
|
led_u.key_l = u3r_mug(u3A->key);
|
|
|
|
c3_assert(!(led_u.key_l >> 31));
|
|
}
|
|
led_u.sal_l = sal_l;
|
|
led_u.sev_l = u3A->sev_l;
|
|
led_u.tno_l = 1;
|
|
|
|
if ( sizeof(led_u) != write(fid_i, &led_u, sizeof(led_u)) ) {
|
|
uL(fprintf(uH, "can't write record (%s)\n", ful_c));
|
|
u3_lo_bail();
|
|
}
|
|
|
|
u3Z->lug_u.len_d = c3_wiseof(led_u);
|
|
}
|
|
|
|
// Work through the boot events.
|
|
u3_raft_work();
|
|
}
|
|
|
|
/* _sist_make(): boot from scratch.
|
|
*/
|
|
static void
|
|
_sist_make(u3_noun fav)
|
|
{
|
|
// Initialize ames
|
|
u3_ames_ef_bake();
|
|
|
|
// Authenticate and initialize terminal.
|
|
//
|
|
u3_term_ef_bake(fav);
|
|
|
|
// Create the ship directory.
|
|
//
|
|
_sist_zest();
|
|
}
|
|
|
|
/* _sist_rest_nuu(): upgrade log from previous format.
|
|
*/
|
|
static void
|
|
_sist_rest_nuu(u3_ulog* lug_u, u3_uled led_u, c3_c* old_c)
|
|
{
|
|
c3_c nuu_c[2048];
|
|
u3_noun roe = u3_nul;
|
|
c3_i fid_i = lug_u->fid_i;
|
|
c3_i fud_i;
|
|
c3_i ret_i;
|
|
c3_d end_d = lug_u->len_d;
|
|
|
|
uL(fprintf(uH, "rest: converting log from prior format\n"));
|
|
|
|
c3_assert(led_u.mag_l == u3r_mug('f'));
|
|
|
|
if ( -1 == lseek64(fid_i, 4ULL * end_d, SEEK_SET) ) {
|
|
uL(fprintf(uH, "rest_nuu failed (a)\n"));
|
|
perror("lseek64");
|
|
u3_lo_bail();
|
|
}
|
|
|
|
while ( end_d != c3_wiseof(u3_uled) ) {
|
|
c3_d tar_d;
|
|
u3_olar lar_u;
|
|
c3_w* img_w;
|
|
u3_noun ron;
|
|
|
|
tar_d = (end_d - (c3_d)c3_wiseof(u3_olar));
|
|
|
|
if ( -1 == lseek64(fid_i, 4ULL * tar_d, SEEK_SET) ) {
|
|
uL(fprintf(uH, "rest_nuu failed (b)\n"));
|
|
perror("lseek64");
|
|
u3_lo_bail();
|
|
}
|
|
if ( sizeof(u3_olar) != read(fid_i, &lar_u, sizeof(u3_olar)) ) {
|
|
uL(fprintf(uH, "rest_nuu failed (c)\n"));
|
|
perror("read");
|
|
u3_lo_bail();
|
|
}
|
|
|
|
if ( lar_u.syn_w != u3r_mug_d(tar_d) ) {
|
|
uL(fprintf(uH, "rest_nuu failed (d)\n"));
|
|
u3_lo_bail();
|
|
}
|
|
|
|
img_w = c3_malloc(4 * lar_u.len_w);
|
|
end_d = (tar_d - (c3_d)lar_u.len_w);
|
|
|
|
if ( -1 == lseek64(fid_i, 4ULL * end_d, SEEK_SET) ) {
|
|
uL(fprintf(uH, "rest_nuu failed (e)\n"));
|
|
perror("lseek64");
|
|
u3_lo_bail();
|
|
}
|
|
if ( (4 * lar_u.len_w) != read(fid_i, img_w, (4 * lar_u.len_w)) ) {
|
|
uL(fprintf(uH, "rest_nuu failed (f)\n"));
|
|
perror("read");
|
|
u3_lo_bail();
|
|
}
|
|
|
|
ron = u3i_words(lar_u.len_w, img_w);
|
|
free(img_w);
|
|
|
|
if ( lar_u.mug_w != u3r_mug(ron) ) {
|
|
uL(fprintf(uH, "rest_nuu failed (g)\n"));
|
|
u3_lo_bail();
|
|
}
|
|
|
|
roe = u3nc(ron, roe);
|
|
}
|
|
|
|
if ( 0 != close(fid_i) ) {
|
|
uL(fprintf(uH, "rest: could not close\n"));
|
|
perror("close");
|
|
u3_lo_bail();
|
|
}
|
|
|
|
ret_i = snprintf(nuu_c, 2048, "%s/.urb/ham.hope", u3_Host.dir_c);
|
|
c3_assert(ret_i < 2048);
|
|
|
|
if ( (fud_i = open(nuu_c, O_CREAT | O_TRUNC | O_RDWR, 0600)) < 0 ) {
|
|
uL(fprintf(uH, "rest: can't open record (%s)\n", nuu_c));
|
|
perror("open");
|
|
u3_lo_bail();
|
|
}
|
|
|
|
led_u.mag_l = u3r_mug('g');
|
|
if ( (sizeof(led_u) != write(fud_i, &led_u, sizeof(led_u))) ) {
|
|
uL(fprintf(uH, "rest: can't write header\n"));
|
|
perror("write");
|
|
u3_lo_bail();
|
|
}
|
|
|
|
{
|
|
c3_d ent_d = 1;
|
|
|
|
c3_assert(end_d == c3_wiseof(u3_uled));
|
|
while ( u3_nul != roe ) {
|
|
u3_noun ovo = u3k(u3h(roe));
|
|
u3_noun nex = u3k(u3t(roe));
|
|
u3_ular lar_u;
|
|
c3_w* img_w;
|
|
c3_d tar_d;
|
|
|
|
lar_u.len_w = u3r_met(5, ovo);
|
|
tar_d = end_d + lar_u.len_w;
|
|
lar_u.syn_w = u3r_mug(tar_d);
|
|
lar_u.ent_d = ent_d;
|
|
lar_u.tem_w = 0;
|
|
lar_u.typ_w = c3__ov;
|
|
lar_u.mug_w = u3r_mug_both(u3r_mug(ovo),
|
|
u3r_mug_both(u3r_mug(0),
|
|
u3r_mug(c3__ov)));
|
|
|
|
img_w = c3_malloc(lar_u.len_w << 2);
|
|
u3r_words(0, lar_u.len_w, img_w, ovo);
|
|
u3z(ovo);
|
|
|
|
if ( (lar_u.len_w << 2) != write(fud_i, img_w, lar_u.len_w << 2) ) {
|
|
uL(fprintf(uH, "rest_nuu failed (h)\n"));
|
|
perror("write");
|
|
u3_lo_bail();
|
|
}
|
|
if ( sizeof(u3_ular) != write(fud_i, &lar_u, sizeof(u3_ular)) ) {
|
|
uL(fprintf(uH, "rest_nuu failed (i)\n"));
|
|
perror("write");
|
|
u3_lo_bail();
|
|
}
|
|
|
|
ent_d++;
|
|
end_d = tar_d + c3_wiseof(u3_ular);
|
|
u3z(roe); roe = nex;
|
|
}
|
|
}
|
|
if ( 0 != rename(nuu_c, old_c) ) {
|
|
uL(fprintf(uH, "rest_nuu failed (k)\n"));
|
|
perror("rename");
|
|
u3_lo_bail();
|
|
}
|
|
if ( -1 == lseek64(fud_i, sizeof(u3_uled), SEEK_SET) ) {
|
|
uL(fprintf(uH, "rest_nuu failed (l)\n"));
|
|
perror("lseek64");
|
|
u3_lo_bail();
|
|
}
|
|
lug_u->fid_i = fud_i;
|
|
lug_u->len_d = end_d;
|
|
}
|
|
|
|
/* _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_d(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_d(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 ) {
|
|
/* change to continue to check all events */
|
|
break;
|
|
}
|
|
|
|
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\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();
|
|
}
|
|
}
|
|
|
|
/* _sist_zen(): get OS entropy.
|
|
*/
|
|
static u3_noun
|
|
_sist_zen()
|
|
{
|
|
c3_w rad_w[16];
|
|
|
|
c3_rand(rad_w);
|
|
return u3i_words(16, rad_w);
|
|
}
|
|
|
|
/* 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();
|
|
}
|
|
}
|