| 1 | #include "lib.h" |
| 2 | |
| 3 | const char *prog = "<unset>"; |
| 4 | |
| 5 | void set_prog(const char *p) |
| 6 | { const char *q = strrchr(p, '/'); prog = q ? q + 1 : p; } |
| 7 | |
| 8 | void vmoan(const char *fmt, va_list ap) |
| 9 | { vmoan_syserr(0, fmt, ap); } |
| 10 | |
| 11 | void vmoan_syserr(int err, const char *fmt, va_list ap) |
| 12 | { |
| 13 | fprintf(stderr, "%s: ", prog); |
| 14 | vfprintf(stderr, fmt, ap); |
| 15 | if (err) fprintf(stderr, ": %s", strerror(errno)); |
| 16 | fputc('\n', stderr); |
| 17 | } |
| 18 | |
| 19 | void moan(const char *fmt, ...) |
| 20 | { va_list ap; va_start(ap, fmt); vmoan(fmt, ap); va_end(ap); } |
| 21 | |
| 22 | void moan_syserr(int err, const char *fmt, ...) |
| 23 | { va_list ap; va_start(ap, fmt); vmoan_syserr(err, fmt, ap); va_end(ap); } |
| 24 | |
| 25 | void bail(const char *fmt, ...) |
| 26 | { va_list ap; va_start(ap, fmt); vmoan(fmt, ap); va_end(ap); exit(2); } |
| 27 | |
| 28 | void bail_syserr(int err, const char *fmt, ...) |
| 29 | { |
| 30 | va_list ap; |
| 31 | |
| 32 | va_start(ap, fmt); vmoan_syserr(err, fmt, ap); va_end(ap); |
| 33 | exit(2); |
| 34 | } |
| 35 | |
| 36 | void sit(double t) |
| 37 | { |
| 38 | struct timeval tv; |
| 39 | double whole = floor(t); |
| 40 | |
| 41 | if (t) { |
| 42 | tv.tv_sec = whole; tv.tv_usec = floor((t - whole)*1.0e6) + 1; |
| 43 | if (select(0, 0, 0, 0, &tv) < 0) bail_syserr(errno, "failed to sleep"); |
| 44 | } |
| 45 | } |
| 46 | |
| 47 | void carefully_write(int fd, const void *buf, size_t sz) |
| 48 | { |
| 49 | const unsigned char *p = buf; |
| 50 | ssize_t n; |
| 51 | |
| 52 | if (fd < 0) return; |
| 53 | while (sz) { |
| 54 | n = write(fd, p, sz); |
| 55 | if (n < 0) { |
| 56 | if (errno == EINTR) continue; |
| 57 | bail_syserr(errno, "failed to write to output file"); |
| 58 | } |
| 59 | if (!n) bail("unexpected short write to output file"); |
| 60 | p += n; sz -= n; |
| 61 | } |
| 62 | } |
| 63 | |
| 64 | void open_file_on_demand(const char *file, FILE **fp_inout, const char *what) |
| 65 | { |
| 66 | FILE *fp; |
| 67 | |
| 68 | if (!*fp_inout) { |
| 69 | fp = fopen(file, "w"); |
| 70 | if (!fp) bail_syserr(errno, "failed to open %s file `%s'", what, file); |
| 71 | fprintf(fp, "## %s\n\n", what); |
| 72 | *fp_inout = fp; |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | void check_write(FILE *fp, const char *what) |
| 77 | { |
| 78 | fflush(fp); |
| 79 | if (ferror(fp)) bail_syserr(errno, "error writing %s file", what); |
| 80 | } |
| 81 | |
| 82 | void carefully_fclose(FILE *fp, const char *what) |
| 83 | { |
| 84 | if (fp && (ferror(fp) || fclose(fp))) |
| 85 | bail_syserr(errno, "error writing %s file", what); |
| 86 | } |
| 87 | |
| 88 | off_t device_size(int fd, const char *file, int *blksz_out) |
| 89 | { |
| 90 | struct stat st; |
| 91 | uint64_t volsz; |
| 92 | |
| 93 | if (fstat(fd, &st)) |
| 94 | bail_syserr(errno, "failed to obtain status for `%s'", file); |
| 95 | if (S_ISREG(st.st_mode)) |
| 96 | volsz = st.st_size; |
| 97 | else if (S_ISBLK(st.st_mode)) { |
| 98 | if (ioctl(fd, BLKGETSIZE64, &volsz)) |
| 99 | bail_syserr(errno, "failed to get volume size for `%s'", file); |
| 100 | if (ioctl(fd, BLKSSZGET, blksz_out)) |
| 101 | bail_syserr(errno, "failed to get block size for `%s'", file); |
| 102 | } else |
| 103 | bail("can't read size for `%s': expected file or block device", file); |
| 104 | return ((off_t)volsz); |
| 105 | } |
| 106 | |
| 107 | void store_filename(char *buf, ident id) |
| 108 | { |
| 109 | switch (id_kind(id)) { |
| 110 | case RAW: |
| 111 | sprintf(buf, "#<raw device>"); |
| 112 | break; |
| 113 | case IFO: |
| 114 | if (!id_title(id)) sprintf(buf, "/VIDEO_TS/VIDEO_TS.IFO"); |
| 115 | else sprintf(buf, "/VIDEO_TS/VTS_%02u_0.IFO", id_title(id)); |
| 116 | break; |
| 117 | case BUP: |
| 118 | if (!id_title(id)) sprintf(buf, "/VIDEO_TS/VIDEO_TS.BUP"); |
| 119 | else sprintf(buf, "/VIDEO_TS/VTS_%02u_0.BUP", id_title(id)); |
| 120 | break; |
| 121 | case VOB: |
| 122 | if (!id_title(id)) sprintf(buf, "/VIDEO_TS/VIDEO_TS.VOB"); |
| 123 | else |
| 124 | sprintf(buf, "/VIDEO_TS/VTS_%02u_%u.VOB", id_title(id), id_part(id)); |
| 125 | break; |
| 126 | default: |
| 127 | abort(); |
| 128 | } |
| 129 | } |
| 130 | |
| 131 | static char *copy_string(char *p, const char *q) |
| 132 | { |
| 133 | while (*q) *p++ = *q++; |
| 134 | *p = 0; return (p); |
| 135 | } |
| 136 | |
| 137 | static char *copy_hex(char *p, const unsigned char *q, size_t sz) |
| 138 | { |
| 139 | while (sz) { |
| 140 | sprintf(p, "%02x", *q); |
| 141 | p += 2; q++; sz--; |
| 142 | } |
| 143 | return (p); |
| 144 | } |
| 145 | |
| 146 | int dvd_id(char *p, dvd_reader_t *dvd, unsigned f, const char *file) |
| 147 | { |
| 148 | char volid[33]; |
| 149 | unsigned char volsetid[16], discid[16]; |
| 150 | int rc; |
| 151 | size_t n; |
| 152 | |
| 153 | rc = DVDUDFVolumeInfo(dvd, |
| 154 | volid, sizeof(volid), |
| 155 | volsetid, sizeof(volsetid)); |
| 156 | if (!rc) { |
| 157 | p = copy_string(p, volid); |
| 158 | *p++ = '-'; |
| 159 | for (n = sizeof(volsetid); n && !volsetid[n - 1]; n--); |
| 160 | p = copy_hex(p, volsetid, n); |
| 161 | } else if (f&DIF_MUSTVOLINF) { |
| 162 | if (file) moan("failed to read volume info for `%s'", file); |
| 163 | else moan("failed to read volume info"); |
| 164 | return (-1); |
| 165 | } else |
| 166 | p = copy_string(p, "<error reading volume info>"); |
| 167 | |
| 168 | *p++ = ':'; |
| 169 | rc = DVDDiscID(dvd, discid); |
| 170 | if (!rc) |
| 171 | p = copy_hex(p, discid, sizeof(discid)); |
| 172 | else if (f&DIF_MUSTIFOHASH) { |
| 173 | if (file) moan("failed to determine disc id of `%s'", file); |
| 174 | else moan("failed to determine disc id"); |
| 175 | return (-1); |
| 176 | } else |
| 177 | p = copy_string(p, "<error reading disc-id>"); |
| 178 | |
| 179 | return (0); |
| 180 | } |
| 181 | |
| 182 | struct progress_state progress = PROGRESS_STATE_INIT; |
| 183 | static struct banner_progress_item banner_progress; |
| 184 | |
| 185 | static void render_banner_progress(struct progress_item *item, |
| 186 | struct progress_render_state *render) |
| 187 | { |
| 188 | struct banner_progress_item *bi = (struct banner_progress_item *)item; |
| 189 | |
| 190 | progress_putleft(render, " %s", bi->msg); |
| 191 | progress_shownotice(render, 4, 7); |
| 192 | } |
| 193 | |
| 194 | void show_banner(const char *msg) |
| 195 | { |
| 196 | banner_progress._base.render = render_banner_progress; |
| 197 | progress_additem(&progress, &banner_progress._base); |
| 198 | banner_progress.msg = msg; |
| 199 | progress_update(&progress); |
| 200 | } |
| 201 | |
| 202 | void hide_banner(void) |
| 203 | { |
| 204 | if (!progress_removeitem(&progress, &banner_progress._base)) |
| 205 | progress_update(&progress); |
| 206 | } |
| 207 | |
| 208 | #ifdef notdef |
| 209 | static void logfn(void *p, dvd_logger_level_t lev, |
| 210 | const char *fmt, va_list ap) |
| 211 | { |
| 212 | switch (lev) { |
| 213 | case DVD_LOGGER_LEVEL_ERROR: |
| 214 | fprintf("%s (libdvdread error): ", prog); |
| 215 | break; |
| 216 | case DVD_LOGGER_LEVEL_WARN: |
| 217 | fprintf("%s (libdvdread warning): ", prog); |
| 218 | break; |
| 219 | default: |
| 220 | return; |
| 221 | } |
| 222 | vfprintf(stderr, fmt, ap); |
| 223 | fputc('\n', stderr); |
| 224 | } |
| 225 | static const dvd_logger_cb logger = { logfn }; |
| 226 | #endif |
| 227 | |
| 228 | void open_dvd(const char *device, int *fd_out, dvd_reader_t **dvd_out) |
| 229 | { |
| 230 | int fd; |
| 231 | dvd_reader_t *dvd; |
| 232 | int bannerp = 0; |
| 233 | |
| 234 | for (;;) { |
| 235 | fd = open(device, O_RDONLY); |
| 236 | if (fd >= 0 || errno != ENOMEDIUM) break; |
| 237 | if (!bannerp) { |
| 238 | show_banner("Waiting for disc to be inserted..."); |
| 239 | bannerp = 1; |
| 240 | } |
| 241 | sit(0.2); |
| 242 | } |
| 243 | if (bannerp) hide_banner(); |
| 244 | if (fd < 0) bail_syserr(errno, "failed to open device `%s'", device); |
| 245 | if (dvd_out) { |
| 246 | #ifdef notdef |
| 247 | dvd = DVDOpen2(0, &logger, device); |
| 248 | #else |
| 249 | dvd = DVDOpen(device); |
| 250 | #endif |
| 251 | if (!dvd) bail("failed to open DVD on `%s'", device); |
| 252 | *dvd_out = dvd; |
| 253 | } |
| 254 | if (fd_out) *fd_out = fd; |
| 255 | else close(fd); |
| 256 | } |