| 1 | #define _GNU_SOURCE |
| 2 | #define _FILE_OFFSET_BITS 64 |
| 3 | |
| 4 | #include <assert.h> |
| 5 | #include <ctype.h> |
| 6 | #include <errno.h> |
| 7 | #include <inttypes.h> |
| 8 | #include <math.h> |
| 9 | #include <stdarg.h> |
| 10 | #include <stdint.h> |
| 11 | #include <stdio.h> |
| 12 | #include <stdlib.h> |
| 13 | #include <string.h> |
| 14 | #include <time.h> |
| 15 | |
| 16 | #include <unistd.h> |
| 17 | #include <fcntl.h> |
| 18 | #include <sys/ioctl.h> |
| 19 | #include <sys/time.h> |
| 20 | |
| 21 | #include <getopt.h> |
| 22 | |
| 23 | #include <linux/fs.h> |
| 24 | |
| 25 | #include <dvdread/dvd_reader.h> |
| 26 | #include <dvdread/dvd_udf.h> |
| 27 | #include <dvdread/ifo_read.h> |
| 28 | #include <dvdread/ifo_types.h> |
| 29 | |
| 30 | #define SECTORSZ 2048 |
| 31 | #define SECTORS(n) (((n) + (SECTORSZ - 1))/SECTORSZ) |
| 32 | |
| 33 | #define CTYPE_HACK(fn, ch) fn((unsigned char)(ch)) |
| 34 | #define ISDIGIT(ch) CTYPE_HACK(isdigit, ch) |
| 35 | #define ISSPACE(ch) CTYPE_HACK(isspace, ch) |
| 36 | |
| 37 | #define N(v) (sizeof(v)/sizeof((v)[0])) |
| 38 | |
| 39 | enum { RAW, IFO, VOB, BUP }; |
| 40 | typedef uint_least32_t ident; |
| 41 | |
| 42 | static inline ident mkident(unsigned kind, unsigned title, unsigned part) |
| 43 | { return (((ident)kind << 0) | ((ident)title << 8) | ((ident)part << 16)); } |
| 44 | static inline unsigned id_kind(ident id) { return ((id >> 0)&0x0ff); } |
| 45 | static inline unsigned id_title(ident id) { return ((id >> 8)&0x0ff); } |
| 46 | static inline unsigned id_part(ident id) { return ((id >> 16)&0x0ff); } |
| 47 | |
| 48 | static const char *prog = "<unset>"; |
| 49 | static int status = 0; |
| 50 | |
| 51 | static void usage(FILE *fp) |
| 52 | { |
| 53 | fprintf(fp, |
| 54 | "usage: %s [-c] [-D DEV] [-R MAP] " |
| 55 | "[-b OUTMAP] [-o OUTFILE] [-r [START]-[END]]\n", |
| 56 | prog); |
| 57 | } |
| 58 | |
| 59 | static void vmoan(const char *fmt, va_list ap) |
| 60 | { fprintf(stderr, "%s: ", prog); vfprintf(stderr, fmt, ap); } |
| 61 | __attribute__((noreturn, format(printf, 1, 2))) |
| 62 | static void bail(const char *fmt, ...) |
| 63 | { |
| 64 | va_list ap; |
| 65 | |
| 66 | va_start(ap, fmt); vmoan(fmt, ap); va_end(ap); |
| 67 | fputc('\n', stderr); |
| 68 | exit(2); |
| 69 | } |
| 70 | __attribute__((noreturn, format(printf, 2, 3))) |
| 71 | static void bail_syserr(int err, const char *fmt, ...) |
| 72 | { |
| 73 | va_list ap; |
| 74 | |
| 75 | va_start(ap, fmt); vmoan(fmt, ap); va_end(ap); |
| 76 | if (err) fprintf(stderr, ": %s", strerror(errno)); |
| 77 | fputc('\n', stderr); |
| 78 | exit(2); |
| 79 | } |
| 80 | |
| 81 | #define MAXFNSZ (1 + 8 + 1 + 12 + 1) |
| 82 | |
| 83 | static void store_filename(char *buf, ident id) |
| 84 | { |
| 85 | switch (id_kind(id)) { |
| 86 | case RAW: |
| 87 | sprintf(buf, "#<raw device>"); |
| 88 | break; |
| 89 | case IFO: |
| 90 | if (!id_title(id)) sprintf(buf, "/VIDEO_TS/VIDEO_TS.IFO"); |
| 91 | else sprintf(buf, "/VIDEO_TS/VTS_%02u_0.IFO", id_title(id)); |
| 92 | break; |
| 93 | case BUP: |
| 94 | if (!id_title(id)) sprintf(buf, "/VIDEO_TS/VIDEO_TS.BUP"); |
| 95 | else sprintf(buf, "/VIDEO_TS/VTS_%02u_0.BUP", id_title(id)); |
| 96 | break; |
| 97 | case VOB: |
| 98 | if (!id_title(id)) sprintf(buf, "/VIDEO_TS/VIDEO_TS.VOB"); |
| 99 | else |
| 100 | sprintf(buf, "/VIDEO_TS/VTS_%02u_%u.VOB", id_title(id), id_part(id)); |
| 101 | break; |
| 102 | default: |
| 103 | abort(); |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | #define DEFVEC(vtype, etype) \ |
| 108 | typedef struct { etype *v; size_t n, sz; } vtype |
| 109 | #define VEC_INIT { 0, 0, 0 } |
| 110 | #define VEC_FREE(vv) do { \ |
| 111 | free((vv)->v); (vv)->v 0; (vv)->n = (vv)->sz = 0; \ |
| 112 | } while (0) |
| 113 | #define VEC_PUSH(p, vv) do { \ |
| 114 | size_t _want; \ |
| 115 | if ((vv)->n >= (vv)->sz) { \ |
| 116 | (vv)->sz = (vv)->sz ? 2*(vv)->sz : 32; \ |
| 117 | _want = (vv)->sz*sizeof(*(vv)->v); \ |
| 118 | (vv)->v = realloc((vv)->v, _want); \ |
| 119 | if (!(vv)->v) bail("out of memory allocating %zu bytes", _want); \ |
| 120 | } \ |
| 121 | (p) = &(vv)->v[(vv)->n++]; \ |
| 122 | } while (0) |
| 123 | |
| 124 | #define MAXFILES (1 + 2*99 + 1) |
| 125 | struct file { |
| 126 | ident id; |
| 127 | uint32_t start, end; |
| 128 | }; |
| 129 | DEFVEC(file_v, struct file); |
| 130 | static file_v filetab = VEC_INIT; |
| 131 | |
| 132 | enum { EV_WRITE, EV_BEGIN, EV_END, EV_STOP }; |
| 133 | struct event { |
| 134 | unsigned char ev, file; |
| 135 | uint32_t pos; |
| 136 | }; |
| 137 | DEFVEC(event_v, struct event); |
| 138 | static event_v eventq = VEC_INIT; |
| 139 | |
| 140 | typedef uint_least32_t bits; |
| 141 | static bits live[(MAXFILES + 31)/32]; |
| 142 | |
| 143 | static inline int livep(unsigned i) |
| 144 | { return (live[i/32]&((bits)1 << (i%32))); } |
| 145 | static inline void set_live(unsigned i) |
| 146 | { live[i/32] |= (bits)1 << (i%32); } |
| 147 | static inline void clear_live(unsigned i) |
| 148 | { live[i/32] &= ~((bits)1 << (i%32)); } |
| 149 | static inline int least_live(void) |
| 150 | { |
| 151 | unsigned i, n = (filetab.n + 32)/32; |
| 152 | bits b; |
| 153 | |
| 154 | for (i = 0; i < n; i++) { b = live[i]; if (b) goto found; } |
| 155 | return (-1); |
| 156 | found: |
| 157 | i *= 32; |
| 158 | if (!(b&0x0000ffff)) { b >>= 16; i += 16; } |
| 159 | if (!(b&0x000000ff)) { b >>= 8; i += 8; } |
| 160 | if (!(b&0x0000000f)) { b >>= 4; i += 4; } |
| 161 | if (!(b&0x00000003)) { b >>= 2; i += 2; } |
| 162 | if (!(b&0x00000001)) { b >>= 1; i += 1; } |
| 163 | assert(b&1); |
| 164 | return (i); |
| 165 | } |
| 166 | |
| 167 | static void put_event(unsigned evtype, unsigned file, uint32_t pos) |
| 168 | { |
| 169 | struct event *ev; |
| 170 | |
| 171 | VEC_PUSH(ev, &eventq); |
| 172 | ev->ev = evtype; ev->file = file; ev->pos = pos; |
| 173 | } |
| 174 | |
| 175 | static void put_file(ident id, uint32_t start, uint32_t end) |
| 176 | { |
| 177 | struct file *f; |
| 178 | size_t i; |
| 179 | |
| 180 | VEC_PUSH(f, &filetab); i = f - filetab.v; |
| 181 | f->id = id; f->start = start; f->end = end; |
| 182 | put_event(EV_BEGIN, i, start); |
| 183 | put_event(EV_END, i, end); |
| 184 | } |
| 185 | |
| 186 | static void put_menu(dvd_reader_t *dvd, unsigned title) |
| 187 | { |
| 188 | ident id = mkident(VOB, title, 0); |
| 189 | char fn[MAXFNSZ]; |
| 190 | uint32_t start, len; |
| 191 | |
| 192 | store_filename(fn, id); |
| 193 | start = UDFFindFile(dvd, fn, &len); if (!start) return; |
| 194 | #ifdef DEBUG |
| 195 | printf(";; %8"PRIu32" .. %-8"PRIu32": %s\n", |
| 196 | start, start + SECTORS(len), fn); |
| 197 | #endif |
| 198 | put_file(id, start, start + SECTORS(len)); |
| 199 | } |
| 200 | |
| 201 | static void put_title(dvd_reader_t *dvd, unsigned title) |
| 202 | { |
| 203 | char fn[MAXFNSZ]; |
| 204 | uint32_t start[9], len[9]; |
| 205 | unsigned i, npart; |
| 206 | |
| 207 | for (i = 0; i < 9; i++) { |
| 208 | store_filename(fn, mkident(VOB, title, i + 1)); |
| 209 | start[i] = UDFFindFile(dvd, fn, &len[i]); if (!start[i]) break; |
| 210 | } |
| 211 | npart = i; if (!npart) return; |
| 212 | |
| 213 | #ifdef DEBUG |
| 214 | for (i = 0; i < npart; i++) { |
| 215 | store_filename(fn, mkident(VOB, title, i + 1)); |
| 216 | printf(";; %8"PRIu32" .. %-8"PRIu32": %s\n", |
| 217 | start[i], start[i] + SECTORS(len[i]), fn); |
| 218 | } |
| 219 | #endif |
| 220 | |
| 221 | if (npart > 1) |
| 222 | for (i = 0; i < npart - 1; i++) { |
| 223 | if (len[i]%SECTORSZ) |
| 224 | bail("title %u part %u length = %"PRIu32" not a multiple of %d", |
| 225 | title, i, len[i], SECTORSZ); |
| 226 | if (start[i] + len[i]/SECTORSZ != start[i + 1]) |
| 227 | bail("title %u part %u end = %"PRIu32" /= part %u start = %"PRIu32"", |
| 228 | title, i, start[i] + len[i]/SECTORSZ, i + 1, start[i + 1]); |
| 229 | } |
| 230 | |
| 231 | put_file(mkident(VOB, title, 1), |
| 232 | start[0], start[npart - 1] + SECTORS(len[npart - 1])); |
| 233 | } |
| 234 | |
| 235 | static int compare_event(const void *a, const void *b) |
| 236 | { |
| 237 | const struct event *eva = a, *evb = b; |
| 238 | |
| 239 | if (eva->pos < evb->pos) return (-1); |
| 240 | else if (eva->pos > evb->pos) return (+1); |
| 241 | |
| 242 | if (eva->ev < evb->ev) return (-1); |
| 243 | else if (eva->ev > evb->ev) return (+1); |
| 244 | |
| 245 | if (eva->file < evb->file) return (-1); |
| 246 | else if (eva->file > evb->file) return (+1); |
| 247 | |
| 248 | return (0); |
| 249 | } |
| 250 | |
| 251 | static int progresslen = 0; |
| 252 | |
| 253 | static void clear_progress_internal(void) |
| 254 | { while (progresslen) { fputs("\b \b", stdout); progresslen--; } } |
| 255 | static void clear_progress(void) |
| 256 | { clear_progress_internal(); fflush(stdout); } |
| 257 | static void vappend_progress(const char *fmt, va_list ap) |
| 258 | { progresslen += vprintf(fmt, ap); } |
| 259 | __attribute__((format(printf, 1, 2))) |
| 260 | static void append_progress(const char *fmt, ...) |
| 261 | { |
| 262 | va_list ap; |
| 263 | |
| 264 | va_start(ap, fmt); |
| 265 | vappend_progress(fmt, ap); |
| 266 | va_end(ap); |
| 267 | } |
| 268 | __attribute__((format(printf, 1, 2))) |
| 269 | static void print_progress(const char *fmt, ...) |
| 270 | { |
| 271 | va_list ap; |
| 272 | |
| 273 | va_start(ap, fmt); |
| 274 | clear_progress_internal(); |
| 275 | vappend_progress(fmt, ap); |
| 276 | va_end(ap); |
| 277 | } |
| 278 | |
| 279 | struct source { |
| 280 | dvd_reader_t *dvd; |
| 281 | int dvdfd; |
| 282 | struct file *file; |
| 283 | dvd_file_t *vob; |
| 284 | |
| 285 | uint32_t last_pos, limit, nsectors, ndone; |
| 286 | struct timeval last_time; |
| 287 | double wsum, wcount; |
| 288 | const char *mapfile; FILE *mapfp; |
| 289 | }; |
| 290 | #define SOURCE_INIT { 0, -1, 0, 0, 0, 0, 0, 0, { 0, 0 }, 0.0, 0.0, 0, 0 } |
| 291 | |
| 292 | static void report_progress(struct source *src, uint32_t pos) |
| 293 | { |
| 294 | char etastr[32]; |
| 295 | struct timeval now; |
| 296 | int eta; |
| 297 | double t, f, g, rate; |
| 298 | char *unit; |
| 299 | |
| 300 | #define ALPHA 0.02 |
| 301 | #define BETA (1 - ALPHA) |
| 302 | |
| 303 | gettimeofday(&now, 0); |
| 304 | t = (now.tv_sec - src->last_time.tv_sec) + |
| 305 | (now.tv_usec - src->last_time.tv_usec)/1000000.0; |
| 306 | |
| 307 | if (t) { |
| 308 | g = src->wcount ? pow(BETA, t) : 0.0; f = (1 - g)/(1 - BETA); |
| 309 | src->wsum = f*(pos - src->last_pos)/t + g*src->wsum; |
| 310 | src->wcount = f + g*src->wcount; |
| 311 | src->ndone += pos - src->last_pos; |
| 312 | src->last_time = now; src->last_pos = pos; |
| 313 | } |
| 314 | |
| 315 | if (!src->wsum || !src->wcount) |
| 316 | { rate = 0; strcpy(etastr, "???"); } |
| 317 | else { |
| 318 | rate = src->wsum/src->wcount; |
| 319 | eta = (int)((src->nsectors - src->ndone)/rate); |
| 320 | sprintf(etastr, "%d:%02d:%02d", eta/3600, (eta/60)%60, eta%60); |
| 321 | } |
| 322 | |
| 323 | rate *= SECTORSZ; unit = ""; |
| 324 | if (rate > 128) { rate /= 1024; unit = "k"; } |
| 325 | if (rate > 128) { rate /= 1024; unit = "M"; } |
| 326 | if (rate > 128) { rate /= 1024; unit = "G"; } |
| 327 | |
| 328 | print_progress("copied %.1f%% (%"PRIu32" of %"PRIu32"; %.1f %sB/s, ETA %s)", |
| 329 | src->ndone*100.0/src->nsectors, pos, src->limit, |
| 330 | rate, unit, etastr); |
| 331 | if (src->file && id_kind(src->file->id) == VOB) { |
| 332 | append_progress(" -- %s %d %3.1f%%", |
| 333 | id_part(src->file->id) ? "title" : "menu", |
| 334 | id_title(src->file->id), |
| 335 | (pos - src->file->start)*100.0/ |
| 336 | (src->file->end - src->file->start)); |
| 337 | } |
| 338 | |
| 339 | #undef ALPHA |
| 340 | #undef BETA |
| 341 | } |
| 342 | |
| 343 | static void report_bad_blocks_progress(struct source *src, |
| 344 | uint32_t lo, uint32_t hi, int err) |
| 345 | { |
| 346 | report_progress(src, hi); |
| 347 | |
| 348 | if (lo == hi) append_progress(": retrying bad sector"); |
| 349 | else |
| 350 | append_progress(": %"PRIu32" bad %s", |
| 351 | hi - lo, hi == lo + 1 ? "sector" : "sectors"); |
| 352 | if (err != EIO) append_progress(" (%s)", strerror(err)); |
| 353 | fflush(stdout); |
| 354 | } |
| 355 | |
| 356 | static ssize_t read_sectors(struct source *src, uint32_t pos, |
| 357 | void *buf, uint32_t want) |
| 358 | { |
| 359 | ssize_t n; |
| 360 | |
| 361 | again: |
| 362 | if (src->vob) |
| 363 | n = DVDReadBlocks(src->vob, pos - src->file->start, want, buf); |
| 364 | else if (src->file) { |
| 365 | if (lseek(src->dvdfd, (off_t)pos*SECTORSZ, SEEK_SET) < 0) |
| 366 | bail_syserr(errno, "failed to seek to sector %"PRIu32"", pos); |
| 367 | n = read(src->dvdfd, buf, want*SECTORSZ); |
| 368 | if (n >= 0) n /= SECTORSZ; |
| 369 | } else { |
| 370 | memset(buf, 0, want*SECTORSZ); |
| 371 | n = want; |
| 372 | } |
| 373 | |
| 374 | if (n < 0 && errno == EINTR) goto again; |
| 375 | return (n); |
| 376 | } |
| 377 | |
| 378 | static void carefully_write(int fd, const void *buf, size_t sz) |
| 379 | { |
| 380 | const unsigned char *p = buf; |
| 381 | ssize_t n; |
| 382 | |
| 383 | if (fd < 0) return; |
| 384 | while (sz) { |
| 385 | n = write(fd, p, sz); |
| 386 | if (n < 0) { |
| 387 | if (errno == EINTR) continue; |
| 388 | bail_syserr(errno, "failed to write to output file"); |
| 389 | } |
| 390 | if (!n) bail("unexpected short write to output file"); |
| 391 | p += n; sz -= n; |
| 392 | } |
| 393 | } |
| 394 | |
| 395 | static void emit(struct source *src, int outfd, uint32_t start, uint32_t end) |
| 396 | { |
| 397 | #define BUFSECTORS 512 |
| 398 | |
| 399 | int least, i; |
| 400 | unsigned char buf[BUFSECTORS*SECTORSZ]; |
| 401 | uint32_t pos; |
| 402 | uint32_t bad_lo, bad_hi, good, step; |
| 403 | size_t want; |
| 404 | ssize_t n; |
| 405 | static int first_time = 1; |
| 406 | #ifdef DEBUG |
| 407 | struct file *f; |
| 408 | char fn[MAXFNSZ]; |
| 409 | int act = -1; |
| 410 | #endif |
| 411 | |
| 412 | least = least_live(); |
| 413 | |
| 414 | #ifdef DEBUG |
| 415 | printf(";; %8"PRIu32" .. %"PRIu32"\n", start, end); |
| 416 | |
| 417 | for (i = 0; i < filetab.n; i++) { |
| 418 | if (!livep(i)) continue; |
| 419 | if (act == -1) act = i; |
| 420 | f = &filetab.v[i]; store_filename(fn, f->id); |
| 421 | printf(";;\t\t%8"PRIu32" .. %-8"PRIu32" %s\n", |
| 422 | start - f->start, end - f->start, fn); |
| 423 | } |
| 424 | if (act == -1) printf(";;\t\t#<no live source>\n"); |
| 425 | assert(act == least); |
| 426 | #endif |
| 427 | |
| 428 | if (least == -1) |
| 429 | { src->file = 0; src->vob = 0; } |
| 430 | else { |
| 431 | src->file = &filetab.v[least]; |
| 432 | switch (id_kind(src->file->id)) { |
| 433 | case RAW: |
| 434 | src->vob = 0; |
| 435 | break; |
| 436 | case VOB: |
| 437 | if (first_time) { clear_progress(); first_time = 0; } |
| 438 | src->vob = DVDOpenFile(src->dvd, id_title(src->file->id), |
| 439 | id_part(src->file->id) |
| 440 | ? DVD_READ_TITLE_VOBS |
| 441 | : DVD_READ_MENU_VOBS); |
| 442 | if (!src->vob) |
| 443 | bail("failed to open %s %u", |
| 444 | id_part(src->file->id) ? "title" : "menu", |
| 445 | id_title(src->file->id)); |
| 446 | break; |
| 447 | default: |
| 448 | abort(); |
| 449 | } |
| 450 | } |
| 451 | |
| 452 | pos = start; |
| 453 | while (pos < end) { |
| 454 | want = end - pos; if (want > BUFSECTORS) want = BUFSECTORS; |
| 455 | n = read_sectors(src, pos, buf, want); |
| 456 | |
| 457 | if (n <= 0) { |
| 458 | report_bad_blocks_progress(src, pos, pos, errno); |
| 459 | for (i = 0; i < 4; i++) { |
| 460 | n = read_sectors(src, pos, buf, 1); |
| 461 | if (n > 0) { |
| 462 | clear_progress(); |
| 463 | fprintf(stderr, "%s: sector %"PRIu32" read ok after retry\n", |
| 464 | prog, pos); |
| 465 | bad_lo = bad_hi = pos; |
| 466 | goto recovered; |
| 467 | } |
| 468 | } |
| 469 | |
| 470 | bad_lo = pos; step = 1; bad_hi = pos + 1; |
| 471 | for (;;) { |
| 472 | report_bad_blocks_progress(src, bad_lo, bad_hi, errno); |
| 473 | if (bad_hi >= end) { |
| 474 | clear_progress(); |
| 475 | fprintf(stderr, "%s: giving up on this extent\n", prog); |
| 476 | n = 0; goto recovered; |
| 477 | } |
| 478 | step *= 2; |
| 479 | if (step > end - bad_lo) step = end - bad_lo; |
| 480 | pos = bad_lo + step - 1; |
| 481 | n = read_sectors(src, pos, buf, 1); |
| 482 | if (n > 0) break; |
| 483 | bad_hi = pos + 1; |
| 484 | } |
| 485 | |
| 486 | good = pos; |
| 487 | while (good > bad_hi) { |
| 488 | report_bad_blocks_progress(src, bad_lo, bad_hi, errno); |
| 489 | pos = bad_hi + (good - bad_hi)/2; |
| 490 | n = read_sectors(src, pos, buf, 1); |
| 491 | if (n > 0) good = pos; |
| 492 | else bad_hi = pos + 1; |
| 493 | } |
| 494 | recovered: |
| 495 | if (bad_hi > bad_lo) { |
| 496 | clear_progress(); |
| 497 | fprintf(stderr, "%s: skipping %"PRIu32" bad sectors " |
| 498 | "(%"PRIu32" .. %"PRIu32")\n", |
| 499 | prog, bad_hi - bad_lo, bad_lo, bad_hi); |
| 500 | if (src->mapfile) { |
| 501 | if (!src->mapfp) { |
| 502 | src->mapfp = fopen(src->mapfile, "w"); |
| 503 | if (!src->mapfp) |
| 504 | bail_syserr(errno, "failed to open bad-sector map file `%s'", |
| 505 | optarg); |
| 506 | fprintf(src->mapfp, "## bad sector map\n\n"); |
| 507 | } |
| 508 | fprintf(src->mapfp, "%"PRIu32" %"PRIu32"\n", bad_lo, bad_hi); |
| 509 | fflush(src->mapfp); |
| 510 | if (ferror(src->mapfp)) |
| 511 | bail_syserr(errno, "error writing bad-sector map file"); |
| 512 | } |
| 513 | if (outfd >= 0 && |
| 514 | lseek(outfd, (off_t)(bad_hi - bad_lo)*SECTORSZ, SEEK_CUR) < 0) |
| 515 | bail_syserr(errno, "failed to seek past bad sectors"); |
| 516 | status = 1; |
| 517 | } |
| 518 | pos = bad_hi; |
| 519 | } |
| 520 | |
| 521 | if (n > 0) { carefully_write(outfd, buf, n*SECTORSZ); pos += n; } |
| 522 | report_progress(src, pos); fflush(stdout); |
| 523 | } |
| 524 | |
| 525 | if (src->vob) { DVDCloseFile(src->vob); src->vob = 0; } |
| 526 | |
| 527 | #undef BUFSECTORS |
| 528 | } |
| 529 | |
| 530 | #ifdef notdef |
| 531 | static void logfn(void *p, dvd_logger_level_t lev, |
| 532 | const char *fmt, va_list ap) |
| 533 | { |
| 534 | switch (lev) { |
| 535 | case DVD_LOGGER_LEVEL_ERROR: |
| 536 | fprintf("%s (libdvdread error): ", prog); |
| 537 | break; |
| 538 | case DVD_LOGGER_LEVEL_WARN: |
| 539 | fprintf("%s (libdvdread warning): ", prog); |
| 540 | break; |
| 541 | default: |
| 542 | return; |
| 543 | } |
| 544 | vfprintf(stderr, fmt, ap); |
| 545 | fputc('\n', stderr); |
| 546 | } |
| 547 | static const dvd_logger_cb logger = { logfn }; |
| 548 | #endif |
| 549 | |
| 550 | struct buf { |
| 551 | char *p; |
| 552 | size_t n, sz; |
| 553 | }; |
| 554 | #define BUF_INIT { 0, 0, 0 } |
| 555 | #define BUF_REWIND(b) do { (b)->n = 0; } while (0) |
| 556 | #define BUF_FREE(b) do { \ |
| 557 | buf *_b = (b); \ |
| 558 | free(_b->p); _b->p = 0; _b->n = _b->sz = 0; \ |
| 559 | } while (0) |
| 560 | #define BUF_PUTC(b, ch) do { \ |
| 561 | struct buf *_b = (b); \ |
| 562 | if (_b->n >= _b->sz) { \ |
| 563 | _b->sz = _b->sz ? 2*_b->sz : 32; \ |
| 564 | _b->p = realloc(_b->p, _b->sz); \ |
| 565 | if (!_b->p) bail("out of memory allocating %zu bytes", _b->sz); \ |
| 566 | } \ |
| 567 | _b->p[_b->n] = (ch); \ |
| 568 | } while (0) |
| 569 | |
| 570 | static int read_line(FILE *fp, struct buf *b) |
| 571 | { |
| 572 | int ch; |
| 573 | |
| 574 | ch = getc(fp); |
| 575 | if (ch == EOF) |
| 576 | return (-1); |
| 577 | else if (ch != '\n') do { |
| 578 | BUF_PUTC(b, ch); b->n++; |
| 579 | ch = getc(fp); |
| 580 | } while (ch != EOF && ch != '\n'); |
| 581 | BUF_PUTC(b, 0); |
| 582 | return (0); |
| 583 | } |
| 584 | |
| 585 | int main(int argc, char *argv[]) |
| 586 | { |
| 587 | unsigned f = 0; |
| 588 | char *p; |
| 589 | uint64_t volsz; |
| 590 | uint32_t pos; |
| 591 | off_t off; |
| 592 | struct source src = SOURCE_INIT; |
| 593 | unsigned long start, end; |
| 594 | const struct event *ev; |
| 595 | const char *device = "/dev/dvd", *outfile = 0; |
| 596 | int opt, err, outfd = -1, blksz; |
| 597 | size_t i; |
| 598 | FILE *fp; |
| 599 | struct buf buf = BUF_INIT; |
| 600 | #ifdef DEBUG |
| 601 | const struct file *file; |
| 602 | char fn[MAXFNSZ]; |
| 603 | #endif |
| 604 | |
| 605 | #define f_bogus 1u |
| 606 | #define f_continue 2u |
| 607 | #define f_fixup 4u |
| 608 | #define f_write 256u |
| 609 | |
| 610 | p = strrchr(argv[0], '/'); prog = p ? p + 1 : argv[0]; |
| 611 | for (;;) { |
| 612 | opt = getopt(argc, argv, "hD:FR:b:co:r:"); if (opt < 0) break; |
| 613 | switch (opt) { |
| 614 | case 'h': usage(stderr); exit(0); |
| 615 | case 'D': device = optarg; break; |
| 616 | case 'F': f |= f_fixup; break; |
| 617 | case 'R': |
| 618 | fp = fopen(optarg, "r"); |
| 619 | if (!fp) |
| 620 | bail_syserr(errno, "failed to open ranges file `%s'", optarg); |
| 621 | i = 0; |
| 622 | for (;;) { |
| 623 | BUF_REWIND(&buf); if (read_line(fp, &buf)) break; |
| 624 | p = buf.p; i++; |
| 625 | while (ISSPACE(*p)) p++; |
| 626 | if (!*p || *p == '#') continue; |
| 627 | if (!ISDIGIT(*p)) goto bad_range_file; |
| 628 | start = strtoul(p, &p, 0); |
| 629 | if (errno || !ISSPACE(*p)) goto bad_range_file; |
| 630 | do p++; while (ISSPACE(*p)); |
| 631 | if (!ISDIGIT(*p)) goto bad_range_file; |
| 632 | end = strtoul(p, &p, 0); |
| 633 | if (errno || (*p && !ISSPACE(*p))) goto bad_range_file; |
| 634 | while (ISSPACE(*p)) p++; |
| 635 | if (*p) goto bad_range_file; |
| 636 | if (start > end) goto bad_range_file; |
| 637 | if (start < end) { |
| 638 | put_event(EV_WRITE, 0, start); |
| 639 | put_event(EV_STOP, 0, end); |
| 640 | } |
| 641 | } |
| 642 | if (ferror(fp)) |
| 643 | bail_syserr(errno, "failed to read ranges file `%s'", optarg); |
| 644 | break; |
| 645 | bad_range_file: |
| 646 | bail("bad range `%s' at `%s' line %zu", buf.p, optarg, i); |
| 647 | case 'b': |
| 648 | if (src.mapfile) bail("can't have multiple map files"); |
| 649 | src.mapfile = optarg; |
| 650 | break; |
| 651 | case 'c': f |= f_continue; break; |
| 652 | case 'o': outfile = optarg; break; |
| 653 | case 'r': |
| 654 | err = errno; errno = 0; |
| 655 | p = optarg; |
| 656 | if (*p == '-') |
| 657 | start = 0; |
| 658 | else { |
| 659 | if (!ISDIGIT(*p)) goto bad_range; |
| 660 | start = strtoul(p, &p, 0); |
| 661 | if (errno || *p != '-') goto bad_range; |
| 662 | } |
| 663 | p++; |
| 664 | if (!*p) |
| 665 | put_event(EV_WRITE, 0, start); |
| 666 | else { |
| 667 | if (!ISDIGIT(*p)) goto bad_range; |
| 668 | end = strtoul(p, &p, 0); |
| 669 | if (errno || *p) goto bad_range; |
| 670 | if (start > end) goto bad_range; |
| 671 | if (start < end) { |
| 672 | put_event(EV_WRITE, 0, start); |
| 673 | put_event(EV_STOP, 0, end); |
| 674 | } |
| 675 | } |
| 676 | errno = err; |
| 677 | break; |
| 678 | bad_range: |
| 679 | bail("bad range `%s'", optarg); |
| 680 | break; |
| 681 | default: f |= f_bogus; break; |
| 682 | } |
| 683 | } |
| 684 | if (optind < argc) f |= f_bogus; |
| 685 | if (f&f_bogus) { usage(stderr); exit(2); } |
| 686 | |
| 687 | src.dvdfd = open(device, O_RDONLY); |
| 688 | if (src.dvdfd < 0) bail_syserr(errno, "failed to open device `%s'", device); |
| 689 | if (ioctl(src.dvdfd, BLKSSZGET, &blksz)) |
| 690 | bail_syserr(errno, "failed to get block size for `%s'", device); |
| 691 | if (ioctl(src.dvdfd, BLKGETSIZE64, &volsz)) |
| 692 | bail_syserr(errno, "failed to get volume size for `%s'", device); |
| 693 | |
| 694 | if (blksz != SECTORSZ) |
| 695 | bail("device `%s' block size %d /= %d", device, blksz, SECTORSZ); |
| 696 | if (volsz%SECTORSZ) |
| 697 | bail("device `%s' volume size %"PRIu64" not a multiple of %d", |
| 698 | device, volsz, SECTORSZ); |
| 699 | |
| 700 | if (outfile) { |
| 701 | outfd = open(outfile, O_WRONLY | O_CREAT, 0666); |
| 702 | if (outfd < 0) |
| 703 | bail_syserr(errno, "failed to create output file `%s'", outfile); |
| 704 | } |
| 705 | |
| 706 | if (f&f_continue) { |
| 707 | if (!outfile) bail("can't continue without output file"); |
| 708 | off = lseek(outfd, 0, SEEK_END); |
| 709 | if (off < 0) |
| 710 | bail_syserr(errno, "failed to seek to end of output file `%s'", |
| 711 | outfile); |
| 712 | put_event(EV_WRITE, 0, off/SECTORSZ); |
| 713 | } else if (!eventq.n && !(f&f_fixup)) |
| 714 | put_event(EV_WRITE, 0, 0); |
| 715 | |
| 716 | #ifdef notdef |
| 717 | src.dvd = DVDOpen2(0, &logger, device); |
| 718 | #else |
| 719 | src.dvd = DVDOpen(device); |
| 720 | #endif |
| 721 | if (!src.dvd) bail("failed to open DVD on `%s'", device); |
| 722 | |
| 723 | /* It's fast enough just to check everything. */ |
| 724 | put_menu(src.dvd, 0); |
| 725 | for (i = 1; i < 100; i++) { |
| 726 | put_menu(src.dvd, i); |
| 727 | put_title(src.dvd, i); |
| 728 | } |
| 729 | put_file(mkident(RAW, 0, 0), 0, volsz/SECTORSZ); |
| 730 | assert(filetab.n <= MAXFILES); |
| 731 | |
| 732 | for (i = 0, src.limit = 0; i < filetab.n; i++) |
| 733 | if (filetab.v[i].end > src.limit) src.limit = filetab.v[i].end; |
| 734 | |
| 735 | if (end > src.limit) end = src.limit; |
| 736 | |
| 737 | #ifdef DEBUG |
| 738 | printf("\n;; files:\n"); |
| 739 | for (i = 0; i < filetab.n; i++) { |
| 740 | file = &filetab.v[i]; |
| 741 | store_filename(fn, file->id); |
| 742 | printf(";;\t%8"PRIu32" %s\n", file->start, fn); |
| 743 | } |
| 744 | #endif |
| 745 | |
| 746 | qsort(eventq.v, eventq.n, sizeof(struct event), compare_event); |
| 747 | |
| 748 | f &= ~f_write; start = 0; |
| 749 | for (i = 0; i < eventq.n; i++) { |
| 750 | ev = &eventq.v[i]; |
| 751 | switch (ev->ev) { |
| 752 | case EV_WRITE: |
| 753 | if (f&f_write) |
| 754 | bail("overlapping ranges: range from %lu still open at %"PRIu32"", |
| 755 | start, ev->pos); |
| 756 | f |= f_write; start = ev->pos; |
| 757 | break; |
| 758 | case EV_STOP: |
| 759 | f &= ~f_write; |
| 760 | break; |
| 761 | } |
| 762 | } |
| 763 | |
| 764 | f &= ~f_write; start = 0; |
| 765 | for (i = 0; i < eventq.n; i++) { |
| 766 | ev = &eventq.v[i]; |
| 767 | switch (ev->ev) { |
| 768 | case EV_WRITE: start = ev->pos; f |= f_write; break; |
| 769 | case EV_STOP: src.nsectors += ev->pos - start; f &= ~f_write; break; |
| 770 | } |
| 771 | if (ev->pos >= src.limit) break; |
| 772 | if (f&f_fixup) start = ev->pos; |
| 773 | } |
| 774 | eventq.n = i; |
| 775 | if (f&f_fixup) { |
| 776 | put_event(EV_WRITE, 0, start); |
| 777 | f |= f_write; |
| 778 | } |
| 779 | if (f&f_write) { |
| 780 | src.nsectors += src.limit - start; |
| 781 | put_event(EV_STOP, 0, src.limit); |
| 782 | } |
| 783 | f &= ~f_write; |
| 784 | |
| 785 | #ifdef DEBUG |
| 786 | printf("\n;; event sweep:\n"); |
| 787 | #endif |
| 788 | for (pos = 0, i = 0; i < eventq.n; i++) { |
| 789 | ev = &eventq.v[i]; |
| 790 | if (ev->pos > pos) { |
| 791 | if (f&f_write) emit(&src, outfd, pos, ev->pos); |
| 792 | pos = ev->pos; |
| 793 | #ifdef DEBUG |
| 794 | clear_progress(); |
| 795 | printf(";;\n"); |
| 796 | #endif |
| 797 | } |
| 798 | switch (ev->ev) { |
| 799 | case EV_BEGIN: |
| 800 | set_live(ev->file); |
| 801 | #ifdef DEBUG |
| 802 | store_filename(fn, filetab.v[ev->file].id); |
| 803 | clear_progress(); |
| 804 | printf(";; %8"PRIu32": begin `%s'\n", pos, fn); |
| 805 | #endif |
| 806 | break; |
| 807 | case EV_WRITE: |
| 808 | gettimeofday(&src.last_time, 0); src.last_pos = pos; |
| 809 | if (outfd >= 0 && |
| 810 | lseek(outfd, (off_t)ev->pos*SECTORSZ, SEEK_SET) < 0) |
| 811 | bail_syserr(errno, |
| 812 | "failed to seek to resume position " |
| 813 | "(sector %"PRIu32") in output file `%s'", |
| 814 | ev->pos, outfile); |
| 815 | #ifdef DEBUG |
| 816 | clear_progress(); |
| 817 | printf(";; %8"PRIu32": begin write\n", pos); |
| 818 | #endif |
| 819 | f |= f_write; |
| 820 | break; |
| 821 | case EV_STOP: |
| 822 | f &= ~f_write; |
| 823 | #ifdef DEBUG |
| 824 | clear_progress(); |
| 825 | printf(";; %8"PRIu32": end write\n", pos); |
| 826 | #endif |
| 827 | break; |
| 828 | case EV_END: |
| 829 | clear_live(ev->file); |
| 830 | #ifdef DEBUG |
| 831 | store_filename(fn, filetab.v[ev->file].id); |
| 832 | clear_progress(); |
| 833 | printf(";; %8"PRIu32": end `%s'\n", pos, fn); |
| 834 | #endif |
| 835 | break; |
| 836 | default: abort(); |
| 837 | } |
| 838 | } |
| 839 | |
| 840 | if (progresslen) putchar('\n'); |
| 841 | |
| 842 | if (outfd >= 0 && ftruncate(outfd, (off_t)src.limit*SECTORSZ) < 0) |
| 843 | bail_syserr(errno, "failed to set output file `%s' length", outfile); |
| 844 | |
| 845 | if (src.dvd) DVDClose(src.dvd); |
| 846 | if (src.dvdfd >= 0) close(src.dvdfd); |
| 847 | if (outfd >= 0) close(outfd); |
| 848 | if (src.mapfp) { |
| 849 | if (ferror(src.mapfp) || fclose(src.mapfp)) |
| 850 | bail_syserr(errno, "error writing bad-sector map file"); |
| 851 | } |
| 852 | |
| 853 | #undef f_bogus |
| 854 | #undef f_continue |
| 855 | #undef f_fixup |
| 856 | #undef f_write |
| 857 | |
| 858 | return (status); |
| 859 | } |