batch.c

   1 /* -*- c-file-style: "linux" -*-
   2
   3    Weiss 1/1999
   4    Batch utilities for rsync.
   5
   6 */
   7
   8 #include "rsync.h"
   9 #include <time.h>
  10
  11 extern char *batch_prefix;
  12 extern int csum_length;
  13 extern int protocol_version;
  14 extern struct stats stats;
  15
  16 struct file_list *batch_flist;
  17
  18 static char rsync_flist_file[] = ".rsync_flist";
  19 static char rsync_csums_file[] = ".rsync_csums";
  20 static char rsync_delta_file[] = ".rsync_delta";
  21 static char rsync_argvs_file[] = ".rsync_argvs";
  22
  23 static int f_csums = -1;
  24 static int f_delta = -1;
  25
  26 void write_batch_flist_info(int flist_count, struct file_struct **files)
  27 {
  28         char filename[MAXPATHLEN];
  29         int i, f, save_pv;
  30         int64 save_written;
  31
  32         snprintf(filename, sizeof filename, "%s%s",
  33                  batch_prefix, rsync_flist_file);
  34
  35         f = do_open(filename, O_WRONLY|O_CREAT|O_TRUNC, S_IREAD|S_IWRITE);
  36         if (f < 0) {
  37                 rprintf(FERROR, "Batch file %s open error: %s\n",
  38                         filename, strerror(errno));
  39                 exit_cleanup(1);
  40         }
  41
  42         save_written = stats.total_written;
  43         save_pv = protocol_version;
  44         protocol_version = PROTOCOL_VERSION;
  45         write_int(f, protocol_version);
  46         write_int(f, flist_count);
  47
  48         for (i = 0; i < flist_count; i++)
  49                 send_file_entry(files[i], f, files[i]->flags & LIVE_FLAGS);
  50         send_file_entry(NULL, f, 0);
  51
  52         protocol_version = save_pv;
  53         stats.total_written = save_written;
  54
  55         close(f);
  56 }
  57
  58
  59 void write_batch_argvs_file(int argc, char *argv[])
  60 {
  61         int f;
  62         int i;
  63         char buff[256]; /* XXX */
  64         char buff2[MAXPATHLEN + 6];
  65         char filename[MAXPATHLEN];
  66
  67         /* Set up file extension */
  68         strlcpy(filename, batch_prefix, sizeof(filename));
  69         strlcat(filename, rsync_argvs_file, sizeof(filename));
  70
  71         /* Open batch argvs file for writing;
  72          * create it if it doesn't exist. */
  73         f = do_open(filename, O_WRONLY | O_CREAT | O_TRUNC,
  74                     S_IREAD | S_IWRITE | S_IEXEC);
  75         if (f < 0) {
  76                 rprintf(FERROR, "Batch file %s open error: %s\n",
  77                         filename, strerror(errno));
  78                 exit_cleanup(1);
  79         }
  80         buff[0] = '\0';
  81
  82         /* Write argvs info to batch file */
  83
  84         for (i = 0; i < argc; ++i) {
  85                 if (i == argc - 2) /* Skip source directory on cmdline */
  86                     continue;
  87                 /*
  88                  * FIXME:
  89                  * I think directly manipulating argv[] is probably bogus
  90                  */
  91                 if (!strncmp(argv[i], "--write-batch",
  92                         strlen("--write-batch"))) {
  93                         /* Safer to change it here than script */
  94                         /*
  95                          * Change to --read-batch=prefix
  96                          * to get ready for remote
  97                          */
  98                         strlcat(buff, "--read-batch=", sizeof(buff));
  99                         strlcat(buff, batch_prefix, sizeof(buff));
 100                 } else
 101                 if (i == argc - 1) {
 102                     snprintf(buff2, sizeof(buff2), "${1:-%s}", argv[i]);
 103                     strlcat(buff, buff2, sizeof(buff));
 104                 }
 105                 else {
 106                         strlcat(buff, argv[i], sizeof(buff));
 107                 }
 108
 109                 if (i < (argc - 1)) {
 110                         strlcat(buff, " ", sizeof(buff));
 111                 }
 112         }
 113         strlcat(buff, "\n", sizeof(buff));
 114         if (!write(f, buff, strlen(buff))) {
 115                 rprintf(FERROR, "Batch file %s write error: %s\n",
 116                         filename, strerror(errno));
 117                 close(f);
 118                 exit_cleanup(1);
 119         }
 120         close(f);
 121 }
 122
 123 struct file_list *create_flist_from_batch(void)
 124 {
 125         char filename[MAXPATHLEN];
 126         unsigned short flags;
 127         int i, f, save_pv;
 128         int64 save_read;
 129
 130         snprintf(filename, sizeof filename, "%s%s",
 131                  batch_prefix, rsync_flist_file);
 132
 133         f = do_open(filename, O_RDONLY, 0);
 134         if (f < 0) {
 135                 rprintf(FERROR, "Batch file %s open error: %s\n",
 136                         filename, strerror(errno));
 137                 exit_cleanup(1);
 138         }
 139
 140         batch_flist = new(struct file_list);
 141         if (!batch_flist)
 142                 out_of_memory("create_flist_from_batch");
 143
 144         save_read = stats.total_read;
 145         save_pv = protocol_version;
 146         protocol_version = read_int(f);
 147
 148         batch_flist->count = batch_flist->malloced = read_int(f);
 149         batch_flist->files = new_array(struct file_struct *,
 150                                        batch_flist->malloced);
 151         if (!batch_flist->files)
 152                 out_of_memory("create_flist_from_batch");
 153
 154         for (i = 0; (flags = read_byte(f)) != 0; i++) {
 155                 if (protocol_version >= 28 && (flags & EXTENDED_FLAGS))
 156                         flags |= read_byte(f) << 8;
 157                 receive_file_entry(&batch_flist->files[i], flags, f);
 158         }
 159         receive_file_entry(NULL, 0, 0); /* Signal that we're done. */
 160
 161         protocol_version = save_pv;
 162         stats.total_read = save_read;
 163
 164         return batch_flist;
 165 }
 166
 167 void write_batch_csums_file(void *buff, int bytes_to_write)
 168 {
 169         if (write(f_csums, buff, bytes_to_write) < 0) {
 170                 rprintf(FERROR, "Batch file write error: %s\n",
 171                         strerror(errno));
 172                 close(f_csums);
 173                 exit_cleanup(1);
 174         }
 175 }
 176
 177 void close_batch_csums_file(void)
 178 {
 179         close(f_csums);
 180         f_csums = -1;
 181 }
 182
 183
 184 /**
 185  * Write csum info to batch file
 186  *
 187  * @todo This will break if s->count is ever larger than maxint.  The
 188  * batch code should probably be changed to consistently use the
 189  * variable-length integer routines, which is probably a compatible
 190  * change.
 191  **/
 192 void write_batch_csum_info(int *flist_entry, struct sum_struct *s)
 193 {
 194         size_t i;
 195         int int_count;
 196         char filename[MAXPATHLEN];
 197
 198         if (f_csums < 0) {
 199                 snprintf(filename, sizeof filename, "%s%s",
 200                          batch_prefix, rsync_csums_file);
 201
 202                 f_csums = do_open(filename, O_WRONLY | O_CREAT | O_TRUNC,
 203                                   S_IREAD | S_IWRITE);
 204                 if (f_csums < 0) {
 205                         rprintf(FERROR, "Batch file %s open error: %s\n",
 206                                 filename, strerror(errno));
 207                         close(f_csums);
 208                         exit_cleanup(1);
 209                 }
 210         }
 211
 212         write_batch_csums_file(flist_entry, sizeof(int));
 213         int_count = s ? (int) s->count : 0;
 214         write_batch_csums_file(&int_count, sizeof int_count);
 215
 216         if (s) {
 217                 for (i = 0; i < s->count; i++) {
 218                         write_batch_csums_file(&s->sums[i].sum1, sizeof(uint32));
 219                         write_batch_csums_file(s->sums[i].sum2, csum_length);
 220                 }
 221         }
 222 }
 223
 224 int read_batch_csums_file(char *buff, int len)
 225 {
 226         int bytes_read;
 227
 228         if ((bytes_read = read(f_csums, buff, len)) < 0) {
 229                 rprintf(FERROR, "Batch file read error: %s\n",
 230                         strerror(errno));
 231                 close(f_csums);
 232                 exit_cleanup(1);
 233         }
 234         return bytes_read;
 235 }
 236
 237 void read_batch_csum_info(int flist_entry, struct sum_struct *s,
 238                           int *checksums_match)
 239 {
 240         int i;
 241         int file_flist_entry;
 242         int file_chunk_ct;
 243         uint32 file_sum1;
 244         char file_sum2[SUM_LENGTH];
 245         char filename[MAXPATHLEN];
 246
 247         if (f_csums < 0) {
 248                 snprintf(filename, sizeof filename, "%s%s",
 249                          batch_prefix, rsync_csums_file);
 250
 251                 f_csums = do_open(filename, O_RDONLY, 0);
 252                 if (f_csums < 0) {
 253                         rprintf(FERROR, "Batch file %s open error: %s\n",
 254                                 filename, strerror(errno));
 255                         close(f_csums);
 256                         exit_cleanup(1);
 257                 }
 258         }
 259
 260         read_batch_csums_file((char *) &file_flist_entry, sizeof(int));
 261         if (file_flist_entry != flist_entry) {
 262                 rprintf(FINFO, "file_flist_entry (%d) != flist_entry (%d)\n",
 263                         file_flist_entry, flist_entry);
 264                 close(f_csums);
 265                 exit_cleanup(1);
 266
 267         } else {
 268                 read_batch_csums_file((char *) &file_chunk_ct,
 269                                       sizeof(int));
 270                 *checksums_match = 1;
 271                 for (i = 0; i < file_chunk_ct; i++) {
 272                         read_batch_csums_file((char *) &file_sum1,
 273                                               sizeof(uint32));
 274                         read_batch_csums_file(file_sum2, csum_length);
 275
 276                         if ((s->sums[i].sum1 != file_sum1) ||
 277                             (memcmp(s->sums[i].sum2, file_sum2, csum_length)
 278                                 != 0)) {
 279                                 *checksums_match = 0;
 280                         }
 281                 }               /*  end for  */
 282         }
 283 }
 284
 285 void write_batch_delta_file(char *buff, int bytes_to_write)
 286 {
 287         char filename[MAXPATHLEN];
 288
 289         if (f_delta < 0) {
 290                 strlcpy(filename, batch_prefix, sizeof(filename));
 291                 strlcat(filename, rsync_delta_file, sizeof(filename));
 292
 293                 f_delta = do_open(filename, O_WRONLY | O_CREAT | O_TRUNC,
 294                                   S_IREAD | S_IWRITE);
 295                 if (f_delta < 0) {
 296                         rprintf(FERROR, "Batch file %s open error: %s\n",
 297                                 filename, strerror(errno));
 298                         exit_cleanup(1);
 299                 }
 300         }
 301
 302         if (write(f_delta, buff, bytes_to_write) < 0) {
 303                 rprintf(FERROR, "Batch file %s write error: %s\n",
 304                         filename, strerror(errno));
 305                 close(f_delta);
 306                 exit_cleanup(1);
 307         }
 308 }
 309
 310 void close_batch_delta_file(void)
 311 {
 312         close(f_delta);
 313         f_delta = -1;
 314 }
 315
 316 int read_batch_delta_file(char *buff, int len)
 317 {
 318         int bytes_read;
 319         char filename[MAXPATHLEN];
 320
 321         if (f_delta < 0) {
 322                 strlcpy(filename, batch_prefix, sizeof(filename));
 323                 strlcat(filename, rsync_delta_file, sizeof(filename));
 324
 325                 f_delta = do_open(filename, O_RDONLY, 0);
 326                 if (f_delta < 0) {
 327                         rprintf(FERROR, "Batch file %s open error: %s\n",
 328                                 filename, strerror(errno));
 329                         close(f_delta);
 330                         exit_cleanup(1);
 331                 }
 332         }
 333
 334         bytes_read = read(f_delta, buff, len);
 335         if (bytes_read < 0) {
 336                 rprintf(FERROR, "Batch file %s read error: %s\n",
 337                         filename, strerror(errno));
 338                 close(f_delta);
 339                 exit_cleanup(1);
 340         }
 341
 342         return bytes_read;
 343 }
 344
 345 void show_flist(int index, struct file_struct **fptr)
 346 {
 347         /*  for debugging    show_flist(flist->count, flist->files * */
 348
 349         int i;
 350         for (i = 0; i < index; i++) {
 351                 rprintf(FINFO, "flist->flags=%#x\n", fptr[i]->flags);
 352                 rprintf(FINFO, "flist->modtime=%#lx\n",
 353                         (long unsigned) fptr[i]->modtime);
 354                 rprintf(FINFO, "flist->length=%.0f\n",
 355                         (double) fptr[i]->length);
 356                 rprintf(FINFO, "flist->mode=%#o\n", (int) fptr[i]->mode);
 357                 rprintf(FINFO, "flist->basename=%s\n", fptr[i]->basename);
 358                 if (fptr[i]->dirname)
 359                         rprintf(FINFO, "flist->dirname=%s\n",
 360                                 fptr[i]->dirname);
 361                 if (fptr[i]->basedir)
 362                         rprintf(FINFO, "flist->basedir=%s\n",
 363                                 fptr[i]->basedir);
 364         }
 365 }
 366
 367 void show_argvs(int argc, char *argv[])
 368 {
 369         /*  for debugging  * */
 370
 371         int i;
 372         rprintf(FINFO, "BATCH.C:show_argvs,argc=%d\n", argc);
 373         for (i = 0; i < argc; i++) {
 374                 /*    if (argv[i])   */
 375                 rprintf(FINFO, "i=%d,argv[i]=%s\n", i, argv[i]);
 376
 377         }
 378 }