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