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                 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_IRUSR | S_IWUSR | 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 = flist_new(WITH_HLINK, "create_flist_from_batch");
 140
 141         save_read = stats.total_read;
 142         save_pv = protocol_version;
 143         protocol_version = read_int(f);
 144
 145         batch_flist->count = read_int(f);
 146         flist_expand(batch_flist);
 147
 148         for (i = 0; (flags = read_byte(f)) != 0; i++) {
 149                 if (protocol_version >= 28 && (flags & XMIT_EXTENDED_FLAGS))
 150                         flags |= read_byte(f) << 8;
 151                 receive_file_entry(&batch_flist->files[i], flags, batch_flist, f);
 152         }
 153         receive_file_entry(NULL, 0, NULL, 0); /* Signal that we're done. */
 154
 155         protocol_version = save_pv;
 156         stats.total_read = save_read;
 157
 158         return batch_flist;
 159 }
 160
 161 void write_batch_csums_file(void *buff, int bytes_to_write)
 162 {
 163         if (write(f_csums, buff, bytes_to_write) < 0) {
 164                 rprintf(FERROR, "Batch file write error: %s\n",
 165                     strerror(errno));
 166                 close(f_csums);
 167                 exit_cleanup(1);
 168         }
 169 }
 170
 171 void close_batch_csums_file(void)
 172 {
 173         close(f_csums);
 174         f_csums = -1;
 175 }
 176
 177
 178 /**
 179  * Write csum info to batch file
 180  *
 181  * @todo This will break if s->count is ever larger than maxint.  The
 182  * batch code should probably be changed to consistently use the
 183  * variable-length integer routines, which is probably a compatible
 184  * change.
 185  **/
 186 void write_batch_csum_info(int *flist_entry, struct sum_struct *s)
 187 {
 188         size_t i;
 189         int int_count;
 190         char filename[MAXPATHLEN];
 191
 192         if (f_csums < 0) {
 193                 stringjoin(filename, sizeof filename,
 194                     batch_prefix, rsync_csums_file, NULL);
 195
 196                 f_csums = do_open(filename, O_WRONLY | O_CREAT | O_TRUNC,
 197                     S_IRUSR | S_IWUSR);
 198                 if (f_csums < 0) {
 199                         rprintf(FERROR, "Batch file %s open error: %s\n",
 200                             filename, strerror(errno));
 201                         close(f_csums);
 202                         exit_cleanup(1);
 203                 }
 204         }
 205
 206         write_batch_csums_file(flist_entry, sizeof (int));
 207         int_count = s ? (int) s->count : 0;
 208         write_batch_csums_file(&int_count, sizeof int_count);
 209
 210         if (s) {
 211                 for (i = 0; i < s->count; i++) {
 212                         write_batch_csums_file(&s->sums[i].sum1,
 213                             sizeof (uint32));
 214                         write_batch_csums_file(s->sums[i].sum2, csum_length);
 215                 }
 216         }
 217 }
 218
 219 int read_batch_csums_file(char *buff, int len)
 220 {
 221         int bytes_read;
 222
 223         if ((bytes_read = read(f_csums, buff, len)) < 0) {
 224                 rprintf(FERROR, "Batch file read error: %s\n", strerror(errno));
 225                 close(f_csums);
 226                 exit_cleanup(1);
 227         }
 228         return bytes_read;
 229 }
 230
 231 void read_batch_csum_info(int flist_entry, struct sum_struct *s,
 232                           int *checksums_match)
 233 {
 234         int i;
 235         int file_flist_entry;
 236         int file_chunk_ct;
 237         uint32 file_sum1;
 238         char file_sum2[SUM_LENGTH];
 239         char filename[MAXPATHLEN];
 240
 241         if (f_csums < 0) {
 242                 stringjoin(filename, sizeof filename,
 243                     batch_prefix, rsync_csums_file, NULL);
 244
 245                 f_csums = do_open(filename, O_RDONLY, 0);
 246                 if (f_csums < 0) {
 247                         rprintf(FERROR, "Batch file %s open error: %s\n",
 248                             filename, strerror(errno));
 249                         close(f_csums);
 250                         exit_cleanup(1);
 251                 }
 252         }
 253
 254         read_batch_csums_file((char *) &file_flist_entry, sizeof (int));
 255         if (file_flist_entry != flist_entry) {
 256                 rprintf(FINFO, "file_flist_entry (%d) != flist_entry (%d)\n",
 257                     file_flist_entry, flist_entry);
 258                 close(f_csums);
 259                 exit_cleanup(1);
 260
 261         } else {
 262                 read_batch_csums_file((char *) &file_chunk_ct, sizeof (int));
 263                 *checksums_match = 1;
 264                 for (i = 0; i < file_chunk_ct; i++) {
 265                         read_batch_csums_file((char *) &file_sum1,
 266                             sizeof (uint32));
 267                         read_batch_csums_file(file_sum2, csum_length);
 268
 269                         if ((s->sums[i].sum1 != file_sum1)
 270                             || memcmp(s->sums[i].sum2, file_sum2, csum_length))
 271                                 *checksums_match = 0;
 272                 }               /*  end for  */
 273         }
 274 }
 275
 276 void write_batch_delta_file(char *buff, int bytes_to_write)
 277 {
 278         char filename[MAXPATHLEN];
 279
 280         if (f_delta < 0) {
 281                 stringjoin(filename, sizeof filename,
 282                     batch_prefix, rsync_delta_file, NULL);
 283
 284                 f_delta = do_open(filename, O_WRONLY | O_CREAT | O_TRUNC,
 285                                   S_IRUSR | S_IWUSR);
 286                 if (f_delta < 0) {
 287                         rprintf(FERROR, "Batch file %s open error: %s\n",
 288                                 filename, strerror(errno));
 289                         exit_cleanup(1);
 290                 }
 291         }
 292
 293         if (write(f_delta, buff, bytes_to_write) < 0) {
 294                 rprintf(FERROR, "Batch file %s write error: %s\n",
 295                     filename, strerror(errno));
 296                 close(f_delta);
 297                 exit_cleanup(1);
 298         }
 299 }
 300
 301 void close_batch_delta_file(void)
 302 {
 303         close(f_delta);
 304         f_delta = -1;
 305 }
 306
 307 int read_batch_delta_file(char *buff, int len)
 308 {
 309         int bytes_read;
 310         char filename[MAXPATHLEN];
 311
 312         if (f_delta < 0) {
 313                 stringjoin(filename, sizeof filename,
 314                     batch_prefix, rsync_delta_file, NULL);
 315
 316                 f_delta = do_open(filename, O_RDONLY, 0);
 317                 if (f_delta < 0) {
 318                         rprintf(FERROR, "Batch file %s open error: %s\n",
 319                             filename, strerror(errno));
 320                         close(f_delta);
 321                         exit_cleanup(1);
 322                 }
 323         }
 324
 325         bytes_read = read(f_delta, buff, len);
 326         if (bytes_read < 0) {
 327                 rprintf(FERROR, "Batch file %s read error: %s\n",
 328                     filename, strerror(errno));
 329                 close(f_delta);
 330                 exit_cleanup(1);
 331         }
 332
 333         return bytes_read;
 334 }
 335
 336 void show_flist(int index, struct file_struct **fptr)
 337 {
 338         /*  for debugging    show_flist(flist->count, flist->files * */
 339
 340         int i;
 341         for (i = 0; i < index; i++) {
 342                 rprintf(FINFO, "flist->flags=%#x\n", fptr[i]->flags);
 343                 rprintf(FINFO, "flist->modtime=%#lx\n",
 344                         (long unsigned) fptr[i]->modtime);
 345                 rprintf(FINFO, "flist->length=%.0f\n",
 346                         (double) fptr[i]->length);
 347                 rprintf(FINFO, "flist->mode=%#o\n", (int) fptr[i]->mode);
 348                 rprintf(FINFO, "flist->basename=%s\n", fptr[i]->basename);
 349                 if (fptr[i]->dirname)
 350                         rprintf(FINFO, "flist->dirname=%s\n",
 351                                 fptr[i]->dirname);
 352                 if (fptr[i]->basedir)
 353                         rprintf(FINFO, "flist->basedir=%s\n",
 354                                 fptr[i]->basedir);
 355         }
 356 }
 357
 358 void show_argvs(int argc, char *argv[])
 359 {
 360         /*  for debugging  * */
 361
 362         int i;
 363         rprintf(FINFO, "BATCH.C:show_argvs,argc=%d\n", argc);
 364         for (i = 0; i < argc; i++) {
 365                 /*    if (argv[i])   */
 366                 rprintf(FINFO, "i=%d,argv[i]=%s\n", i, argv[i]);
 367
 368         }
 369 }