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