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         reset_file_entry_vars();
  49         for (i = 0; i < flist_count; i++)
  50                 send_file_entry(files[i], f, files[i]->flags & FLAG_DELETE);
  51         send_file_entry(NULL, f, 0);
  52
  53         protocol_version = save_pv;
  54         stats.total_written = save_written;
  55
  56         close(f);
  57 }
  58
  59
  60 void write_batch_argvs_file(int argc, char *argv[])
  61 {
  62         int f;
  63         int i;
  64         char buff[256]; /* XXX */
  65         char buff2[MAXPATHLEN + 6];
  66         char filename[MAXPATHLEN];
  67
  68         /* Set up file extension */
  69         strlcpy(filename, batch_prefix, sizeof(filename));
  70         strlcat(filename, rsync_argvs_file, sizeof(filename));
  71
  72         /* Open batch argvs file for writing;
  73          * create it if it doesn't exist. */
  74         f = do_open(filename, O_WRONLY | O_CREAT | O_TRUNC,
  75                     S_IREAD | S_IWRITE | S_IEXEC);
  76         if (f < 0) {
  77                 rprintf(FERROR, "Batch file %s open error: %s\n",
  78                         filename, strerror(errno));
  79                 exit_cleanup(1);
  80         }
  81         buff[0] = '\0';
  82
  83         /* Write argvs info to batch file */
  84
  85         for (i = 0; i < argc; ++i) {
  86                 if (i == argc - 2) /* Skip source directory on cmdline */
  87                     continue;
  88                 /*
  89                  * FIXME:
  90                  * I think directly manipulating argv[] is probably bogus
  91                  */
  92                 if (!strncmp(argv[i], "--write-batch",
  93                         strlen("--write-batch"))) {
  94                         /* Safer to change it here than script */
  95                         /*
  96                          * Change to --read-batch=prefix
  97                          * to get ready for remote
  98                          */
  99                         strlcat(buff, "--read-batch=", sizeof(buff));
 100                         strlcat(buff, batch_prefix, sizeof(buff));
 101                 } else
 102                 if (i == argc - 1) {
 103                     snprintf(buff2, sizeof(buff2), "${1:-%s}", argv[i]);
 104                     strlcat(buff, buff2, sizeof(buff));
 105                 }
 106                 else {
 107                         strlcat(buff, argv[i], sizeof(buff));
 108                 }
 109
 110                 if (i < (argc - 1)) {
 111                         strlcat(buff, " ", sizeof(buff));
 112                 }
 113         }
 114         strlcat(buff, "\n", sizeof(buff));
 115         if (!write(f, buff, strlen(buff))) {
 116                 rprintf(FERROR, "Batch file %s write error: %s\n",
 117                         filename, strerror(errno));
 118                 close(f);
 119                 exit_cleanup(1);
 120         }
 121         close(f);
 122 }
 123
 124 struct file_list *create_flist_from_batch(void)
 125 {
 126         char filename[MAXPATHLEN];
 127         unsigned short flags;
 128         int i, f, save_pv;
 129         int64 save_read;
 130
 131         snprintf(filename, sizeof filename, "%s%s",
 132                  batch_prefix, rsync_flist_file);
 133
 134         f = do_open(filename, O_RDONLY, 0);
 135         if (f < 0) {
 136                 rprintf(FERROR, "Batch file %s open error: %s\n",
 137                         filename, strerror(errno));
 138                 exit_cleanup(1);
 139         }
 140
 141         batch_flist = new(struct file_list);
 142         if (!batch_flist)
 143                 out_of_memory("create_flist_from_batch");
 144
 145         save_read = stats.total_read;
 146         save_pv = protocol_version;
 147         protocol_version = read_int(f);
 148
 149         batch_flist->count = batch_flist->malloced = read_int(f);
 150         batch_flist->files = new_array(struct file_struct *,
 151                                        batch_flist->malloced);
 152         if (!batch_flist->files)
 153                 out_of_memory("create_flist_from_batch");
 154
 155         for (i = 0; (flags = read_byte(f)) != 0; i++) {
 156                 if (protocol_version >= 28 && (flags & EXTENDED_FLAGS))
 157                         flags |= read_byte(f) << 8;
 158                 receive_file_entry(&batch_flist->files[i], flags, f);
 159         }
 160         reset_file_entry_vars();
 161
 162         protocol_version = save_pv;
 163         stats.total_read = save_read;
 164
 165         return batch_flist;
 166 }
 167
 168 void write_batch_csums_file(void *buff, int bytes_to_write)
 169 {
 170         char filename[MAXPATHLEN];
 171
 172         if (f_csums < 0) {
 173                 strlcpy(filename, batch_prefix, sizeof(filename));
 174                 strlcat(filename, rsync_csums_file, sizeof(filename));
 175
 176                 f_csums = do_open(filename, O_WRONLY | O_CREAT | O_TRUNC,
 177                                   S_IREAD | S_IWRITE);
 178                 if (f_csums < 0) {
 179                         rprintf(FERROR, "Batch file %s open error: %s\n",
 180                                 filename, strerror(errno));
 181                         close(f_csums);
 182                         exit_cleanup(1);
 183                 }
 184         }
 185
 186         if (write(f_csums, buff, bytes_to_write) < 0) {
 187                 rprintf(FERROR, "Batch file %s write error: %s\n",
 188                         filename, strerror(errno));
 189                 close(f_csums);
 190                 exit_cleanup(1);
 191         }
 192 }
 193
 194 void close_batch_csums_file(void)
 195 {
 196         close(f_csums);
 197         f_csums = -1;
 198 }
 199
 200
 201 /**
 202  * Write csum info to batch file
 203  *
 204  * @todo This will break if s->count is ever larger than maxint.  The
 205  * batch code should probably be changed to consistently use the
 206  * variable-length integer routines, which is probably a compatible
 207  * change.
 208  **/
 209 void write_batch_csum_info(int *flist_entry, struct sum_struct *s)
 210 {
 211         size_t i;
 212         int int_count;
 213
 214         write_batch_csums_file(flist_entry, sizeof(int));
 215         int_count = s ? (int) s->count : 0;
 216         write_batch_csums_file(&int_count, sizeof int_count);
 217
 218         if (s) {
 219                 for (i = 0; i < s->count; i++) {
 220                         write_batch_csums_file(&s->sums[i].sum1, sizeof(uint32));
 221                         write_batch_csums_file(s->sums[i].sum2, csum_length);
 222                 }
 223         }
 224 }
 225
 226 int read_batch_csums_file(char *buff, int len)
 227 {
 228         int bytes_read;
 229         char filename[MAXPATHLEN];
 230
 231         if (f_csums < 0) {
 232                 strlcpy(filename, batch_prefix, sizeof(filename));
 233                 strlcat(filename, rsync_csums_file, sizeof(filename));
 234
 235                 f_csums = do_open(filename, O_RDONLY, 0);
 236                 if (f_csums < 0) {
 237                         rprintf(FERROR, "Batch file %s open error: %s\n",
 238                                 filename, strerror(errno));
 239                         close(f_csums);
 240                         exit_cleanup(1);
 241                 }
 242         }
 243
 244         bytes_read = read(f_csums, buff, len);
 245         if (bytes_read < 0) {
 246                 rprintf(FERROR, "Batch file %s read error: %s\n",
 247                         filename, strerror(errno));
 248                 close(f_csums);
 249                 exit_cleanup(1);
 250         }
 251
 252         return bytes_read;
 253 }
 254
 255 void read_batch_csum_info(int flist_entry, struct sum_struct *s,
 256                           int *checksums_match)
 257 {
 258         int i;
 259         int file_flist_entry;
 260         int file_chunk_ct;
 261         uint32 file_sum1;
 262         char file_sum2[SUM_LENGTH];
 263
 264         read_batch_csums_file((char *) &file_flist_entry, sizeof(int));
 265         if (file_flist_entry != flist_entry) {
 266                 rprintf(FINFO, "file_flist_entry (%d) != flist_entry (%d)\n",
 267                         file_flist_entry, flist_entry);
 268                 close(f_csums);
 269                 exit_cleanup(1);
 270
 271         } else {
 272                 read_batch_csums_file((char *) &file_chunk_ct,
 273                                       sizeof(int));
 274                 *checksums_match = 1;
 275                 for (i = 0; i < file_chunk_ct; i++) {
 276
 277                         read_batch_csums_file((char *) &file_sum1,
 278                                               sizeof(uint32));
 279                         read_batch_csums_file(file_sum2, csum_length);
 280
 281                         if ((s->sums[i].sum1 != file_sum1) ||
 282                             (memcmp(s->sums[i].sum2, file_sum2, csum_length)
 283                                 != 0)) {
 284                                 *checksums_match = 0;
 285                         }
 286                 }               /*  end for  */
 287         }
 288 }
 289
 290 void write_batch_delta_file(char *buff, int bytes_to_write)
 291 {
 292         char filename[MAXPATHLEN];
 293
 294         if (f_delta < 0) {
 295                 strlcpy(filename, batch_prefix, sizeof(filename));
 296                 strlcat(filename, rsync_delta_file, sizeof(filename));
 297
 298                 f_delta = do_open(filename, O_WRONLY | O_CREAT | O_TRUNC,
 299                                   S_IREAD | S_IWRITE);
 300                 if (f_delta < 0) {
 301                         rprintf(FERROR, "Batch file %s open error: %s\n",
 302                                 filename, strerror(errno));
 303                         exit_cleanup(1);
 304                 }
 305         }
 306
 307         if (write(f_delta, buff, bytes_to_write) < 0) {
 308                 rprintf(FERROR, "Batch file %s write error: %s\n",
 309                         filename, strerror(errno));
 310                 close(f_delta);
 311                 exit_cleanup(1);
 312         }
 313 }
 314
 315 void close_batch_delta_file(void)
 316 {
 317         close(f_delta);
 318         f_delta = -1;
 319 }
 320
 321 int read_batch_delta_file(char *buff, int len)
 322 {
 323         int bytes_read;
 324         char filename[MAXPATHLEN];
 325
 326         if (f_delta < 0) {
 327                 strlcpy(filename, batch_prefix, sizeof(filename));
 328                 strlcat(filename, rsync_delta_file, sizeof(filename));
 329
 330                 f_delta = do_open(filename, O_RDONLY, 0);
 331                 if (f_delta < 0) {
 332                         rprintf(FERROR, "Batch file %s open error: %s\n",
 333                                 filename, strerror(errno));
 334                         close(f_delta);
 335                         exit_cleanup(1);
 336                 }
 337         }
 338
 339         bytes_read = read(f_delta, buff, len);
 340         if (bytes_read < 0) {
 341                 rprintf(FERROR, "Batch file %s read error: %s\n",
 342                         filename, strerror(errno));
 343                 close(f_delta);
 344                 exit_cleanup(1);
 345         }
 346
 347         return bytes_read;
 348 }
 349
 350 void show_flist(int index, struct file_struct **fptr)
 351 {
 352         /*  for debugging    show_flist(flist->count, flist->files * */
 353
 354         int i;
 355         for (i = 0; i < index; i++) {
 356                 rprintf(FINFO, "flist->flags=%#x\n", fptr[i]->flags);
 357                 rprintf(FINFO, "flist->modtime=%#lx\n",
 358                         (long unsigned) fptr[i]->modtime);
 359                 rprintf(FINFO, "flist->length=%.0f\n",
 360                         (double) fptr[i]->length);
 361                 rprintf(FINFO, "flist->mode=%#o\n", (int) fptr[i]->mode);
 362                 rprintf(FINFO, "flist->basename=%s\n", fptr[i]->basename);
 363                 if (fptr[i]->dirname)
 364                         rprintf(FINFO, "flist->dirname=%s\n",
 365                                 fptr[i]->dirname);
 366                 if (fptr[i]->basedir)
 367                         rprintf(FINFO, "flist->basedir=%s\n",
 368                                 fptr[i]->basedir);
 369         }
 370 }
 371
 372 void show_argvs(int argc, char *argv[])
 373 {
 374         /*  for debugging  * */
 375
 376         int i;
 377         rprintf(FINFO, "BATCH.C:show_argvs,argc=%d\n", argc);
 378         for (i = 0; i < argc; i++) {
 379                 /*    if (argv[i])   */
 380                 rprintf(FINFO, "i=%d,argv[i]=%s\n", i, argv[i]);
 381
 382         }
 383 }