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 int am_sender;
  12 extern int eol_nulls;
  13 extern int recurse;
  14 extern int xfer_dirs;
  15 extern int preserve_links;
  16 extern int preserve_hard_links;
  17 extern int preserve_devices;
  18 extern int preserve_uid;
  19 extern int preserve_gid;
  20 extern int always_checksum;
  21 extern int protocol_version;
  22 extern char *batch_name;
  23
  24 extern struct filter_list_struct filter_list;
  25
  26 static int fudged_recurse;
  27
  28 static int *flag_ptr[] = {
  29         &fudged_recurse,
  30         &preserve_uid,
  31         &preserve_gid,
  32         &preserve_links,
  33         &preserve_devices,
  34         &preserve_hard_links,
  35         &always_checksum,
  36         &xfer_dirs,
  37         NULL
  38 };
  39
  40 static char *flag_name[] = {
  41         "--recurse (-r)",
  42         "--owner (-o)",
  43         "--group (-g)",
  44         "--links (-l)",
  45         "--devices (-D)",
  46         "--hard-links (-H)",
  47         "--checksum (-c)",
  48         "--dirs (-d)",
  49         NULL
  50 };
  51
  52 void write_stream_flags(int fd)
  53 {
  54         int i, flags;
  55
  56         /* Start the batch file with a bitmap of data-stream-affecting
  57          * flags. */
  58         fudged_recurse = recurse < 0;
  59         for (i = 0, flags = 0; flag_ptr[i]; i++) {
  60                 if (*flag_ptr[i])
  61                         flags |= 1 << i;
  62         }
  63         write_int(fd, flags);
  64 }
  65
  66 void read_stream_flags(int fd)
  67 {
  68         int i, flags;
  69
  70         fudged_recurse = recurse < 0;
  71         if (protocol_version < 29)
  72                 xfer_dirs = 0;
  73         for (i = 0, flags = read_int(fd); flag_ptr[i]; i++) {
  74                 int set = flags & (1 << i) ? 1 : 0;
  75                 if (*flag_ptr[i] != set) {
  76                         if (verbose) {
  77                                 rprintf(FINFO,
  78                                         "%sing the %s option to match the batchfile.\n",
  79                                         set ? "Sett" : "Clear", flag_name[i]);
  80                         }
  81                         *flag_ptr[i] = set;
  82                 }
  83         }
  84         recurse = fudged_recurse ? -1 : 0;
  85         if (protocol_version < 29)
  86                 xfer_dirs = recurse ? 1 : 0;
  87 }
  88
  89 static void write_arg(int fd, char *arg)
  90 {
  91         char *x, *s;
  92
  93         if (*arg == '-' && (x = strchr(arg, '=')) != NULL) {
  94                 write(fd, arg, x - arg + 1);
  95                 arg += x - arg + 1;
  96         }
  97
  98         if (strpbrk(arg, " \"'&;|[]()$#!*?^\\") != NULL) {
  99                 write(fd, "'", 1);
 100                 for (s = arg; (x = strchr(s, '\'')) != NULL; s = x + 1) {
 101                         write(fd, s, x - s + 1);
 102                         write(fd, "'", 1);
 103                 }
 104                 write(fd, s, strlen(s));
 105                 write(fd, "'", 1);
 106                 return;
 107         }
 108
 109         write(fd, arg, strlen(arg));
 110 }
 111
 112 static void write_filter_rules(int fd)
 113 {
 114         struct filter_struct *ent;
 115
 116         write_sbuf(fd, " <<'#E#'\n");
 117         for (ent = filter_list.head; ent; ent = ent->next) {
 118                 unsigned int plen;
 119                 char *p = get_rule_prefix(ent->match_flags, "- ", 0, &plen);
 120                 write_buf(fd, p, plen);
 121                 write_sbuf(fd, ent->pattern);
 122                 if (ent->match_flags & MATCHFLG_DIRECTORY)
 123                         write_byte(fd, '/');
 124                 write_byte(fd, eol_nulls ? 0 : '\n');
 125         }
 126         if (eol_nulls)
 127                 write_sbuf(fd, ";\n");
 128         write_sbuf(fd, "#E#");
 129 }
 130
 131 /* This routine tries to write out an equivalent --read-batch command
 132  * given the user's --write-batch args.  However, it doesn't really
 133  * understand most of the options, so it uses some overly simple
 134  * heuristics to munge the command line into something that will
 135  * (hopefully) work. */
 136 void write_batch_shell_file(int argc, char *argv[], int file_arg_cnt)
 137 {
 138         int fd, i;
 139         char *p, filename[MAXPATHLEN];
 140
 141         stringjoin(filename, sizeof filename,
 142                    batch_name, ".sh", NULL);
 143         fd = do_open(filename, O_WRONLY | O_CREAT | O_TRUNC,
 144                      S_IRUSR | S_IWUSR | S_IEXEC);
 145         if (fd < 0) {
 146                 rsyserr(FERROR, errno, "Batch file %s open error",
 147                         safe_fname(filename));
 148                 exit_cleanup(1);
 149         }
 150
 151         /* Write argvs info to BATCH.sh file */
 152         write_arg(fd, argv[0]);
 153         if (filter_list.head) {
 154                 if (protocol_version >= 29)
 155                         write_sbuf(fd, " --filter=._-");
 156                 else
 157                         write_sbuf(fd, " --exclude-from=-");
 158         }
 159         for (i = 1; i < argc - file_arg_cnt; i++) {
 160                 p = argv[i];
 161                 if (strncmp(p, "--files-from", 12) == 0
 162                     || strncmp(p, "--filter", 8) == 0
 163                     || strncmp(p, "--include", 9) == 0
 164                     || strncmp(p, "--exclude", 9) == 0) {
 165                         if (strchr(p, '=') == NULL)
 166                                 i++;
 167                         continue;
 168                 }
 169                 if (strcmp(p, "-f") == 0) {
 170                         i++;
 171                         continue;
 172                 }
 173                 write(fd, " ", 1);
 174                 if (strncmp(p, "--write-batch", 13) == 0) {
 175                         write(fd, "--read-batch", 12);
 176                         if (p[13] == '=') {
 177                                 write(fd, "=", 1);
 178                                 write_arg(fd, p + 14);
 179                         }
 180                 } else
 181                         write_arg(fd, p);
 182         }
 183         if ((p = find_colon(argv[argc - 1])) != NULL) {
 184                 if (*++p == ':')
 185                         p++;
 186         } else
 187                 p = argv[argc - 1];
 188         write(fd, " ${1:-", 6);
 189         write_arg(fd, p);
 190         write_byte(fd, '}');
 191         if (filter_list.head)
 192                 write_filter_rules(fd);
 193         if (write(fd, "\n", 1) != 1 || close(fd) < 0) {
 194                 rsyserr(FERROR, errno, "Batch file %s write error",
 195                         safe_fname(filename));
 196                 exit_cleanup(1);
 197         }
 198 }
 199
 200 void show_flist(int index, struct file_struct **fptr)
 201 {
 202         /*  for debugging    show_flist(flist->count, flist->files * */
 203
 204         int i;
 205         for (i = 0; i < index; i++) {
 206                 rprintf(FINFO, "flist->flags=%#x\n", fptr[i]->flags);
 207                 rprintf(FINFO, "flist->modtime=%#lx\n",
 208                         (long unsigned) fptr[i]->modtime);
 209                 rprintf(FINFO, "flist->length=%.0f\n",
 210                         (double) fptr[i]->length);
 211                 rprintf(FINFO, "flist->mode=%#o\n", (int) fptr[i]->mode);
 212                 rprintf(FINFO, "flist->basename=%s\n",
 213                         safe_fname(fptr[i]->basename));
 214                 if (fptr[i]->dirname) {
 215                         rprintf(FINFO, "flist->dirname=%s\n",
 216                                 safe_fname(fptr[i]->dirname));
 217                 }
 218                 if (am_sender && fptr[i]->dir.root) {
 219                         rprintf(FINFO, "flist->dir.root=%s\n",
 220                                 safe_fname(fptr[i]->dir.root));
 221                 }
 222         }
 223 }
 224
 225 /* for debugging */
 226 void show_argvs(int argc, char *argv[])
 227 {
 228         int i;
 229
 230         rprintf(FINFO, "BATCH.C:show_argvs,argc=%d\n", argc);
 231         for (i = 0; i < argc; i++)
 232                 rprintf(FINFO, "i=%d,argv[i]=%s\n", i, safe_fname(argv[i]));
 233 }