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