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