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 "zlib/zlib.h"
  10 #include <time.h>
  11
  12 extern int am_sender;
  13 extern int eol_nulls;
  14 extern int recurse;
  15 extern int xfer_dirs;
  16 extern int preserve_links;
  17 extern int preserve_hard_links;
  18 extern int preserve_devices;
  19 extern int preserve_uid;
  20 extern int preserve_gid;
  21 extern int always_checksum;
  22 extern int do_compression;
  23 extern int def_compress_level;
  24 extern int protocol_version;
  25 extern char *batch_name;
  26
  27 extern struct filter_list_struct filter_list;
  28
  29 static int tweaked_compress_level;
  30
  31 static int *flag_ptr[] = {
  32         &recurse,               /* 0 */
  33         &preserve_uid,          /* 1 */
  34         &preserve_gid,          /* 2 */
  35         &preserve_links,        /* 3 */
  36         &preserve_devices,      /* 4 */
  37         &preserve_hard_links,   /* 5 */
  38         &always_checksum,       /* 6 */
  39         &xfer_dirs,             /* 7 (protocol 29) */
  40         &tweaked_compress_level,/* 8 (protocol 29) */
  41         NULL
  42 };
  43
  44 static char *flag_name[] = {
  45         "--recurse (-r)",
  46         "--owner (-o)",
  47         "--group (-g)",
  48         "--links (-l)",
  49         "--devices (-D)",
  50         "--hard-links (-H)",
  51         "--checksum (-c)",
  52         "--dirs (-d)",
  53         "--compress (-z)",
  54         NULL
  55 };
  56
  57 void write_stream_flags(int fd)
  58 {
  59         int i, flags;
  60
  61 #if Z_DEFAULT_COMPRESSION == -1
  62         tweaked_compress_level = do_compression ? def_compress_level + 2 : 0;
  63 #else
  64 #error internal logic error!  Fix def_compress_level logic above and below too!
  65 #endif
  66
  67         /* Start the batch file with a bitmap of data-stream-affecting
  68          * flags. */
  69         if (protocol_version < 29)
  70                 flag_ptr[7] = NULL;
  71         for (i = 0, flags = 0; flag_ptr[i]; i++) {
  72                 if (*flag_ptr[i])
  73                         flags |= 1 << i;
  74         }
  75         write_int(fd, flags);
  76 }
  77
  78 void read_stream_flags(int fd)
  79 {
  80         int i, flags;
  81
  82         if (protocol_version < 29)
  83                 flag_ptr[7] = NULL;
  84         for (i = 0, flags = read_int(fd); flag_ptr[i]; i++) {
  85                 int set = flags & (1 << i) ? 1 : 0;
  86                 if (*flag_ptr[i] != set) {
  87                         if (verbose) {
  88                                 rprintf(FINFO,
  89                                         "%sing the %s option to match the batchfile.\n",
  90                                         set ? "Sett" : "Clear", flag_name[i]);
  91                         }
  92                         *flag_ptr[i] = set;
  93                 }
  94         }
  95         if (protocol_version < 29) {
  96                 if (recurse)
  97                         xfer_dirs |= 1;
  98                 else if (xfer_dirs < 2)
  99                         xfer_dirs = 0;
 100         }
 101
 102         if (tweaked_compress_level == 0 || tweaked_compress_level == 2)
 103                 do_compression = 0;
 104         else {
 105                 do_compression = 1;
 106                 def_compress_level = tweaked_compress_level - 2;
 107         }
 108 }
 109
 110 static void write_arg(int fd, char *arg)
 111 {
 112         char *x, *s;
 113
 114         if (*arg == '-' && (x = strchr(arg, '=')) != NULL) {
 115                 write(fd, arg, x - arg + 1);
 116                 arg += x - arg + 1;
 117         }
 118
 119         if (strpbrk(arg, " \"'&;|[]()$#!*?^\\") != NULL) {
 120                 write(fd, "'", 1);
 121                 for (s = arg; (x = strchr(s, '\'')) != NULL; s = x + 1) {
 122                         write(fd, s, x - s + 1);
 123                         write(fd, "'", 1);
 124                 }
 125                 write(fd, s, strlen(s));
 126                 write(fd, "'", 1);
 127                 return;
 128         }
 129
 130         write(fd, arg, strlen(arg));
 131 }
 132
 133 static void write_filter_rules(int fd)
 134 {
 135         struct filter_struct *ent;
 136
 137         write_sbuf(fd, " <<'#E#'\n");
 138         for (ent = filter_list.head; ent; ent = ent->next) {
 139                 unsigned int plen;
 140                 char *p = get_rule_prefix(ent->match_flags, "- ", 0, &plen);
 141                 write_buf(fd, p, plen);
 142                 write_sbuf(fd, ent->pattern);
 143                 if (ent->match_flags & MATCHFLG_DIRECTORY)
 144                         write_byte(fd, '/');
 145                 write_byte(fd, eol_nulls ? 0 : '\n');
 146         }
 147         if (eol_nulls)
 148                 write_sbuf(fd, ";\n");
 149         write_sbuf(fd, "#E#");
 150 }
 151
 152 /* This routine tries to write out an equivalent --read-batch command
 153  * given the user's --write-batch args.  However, it doesn't really
 154  * understand most of the options, so it uses some overly simple
 155  * heuristics to munge the command line into something that will
 156  * (hopefully) work. */
 157 void write_batch_shell_file(int argc, char *argv[], int file_arg_cnt)
 158 {
 159         int fd, i, len;
 160         char *p, filename[MAXPATHLEN];
 161
 162         stringjoin(filename, sizeof filename,
 163                    batch_name, ".sh", NULL);
 164         fd = do_open(filename, O_WRONLY | O_CREAT | O_TRUNC,
 165                      S_IRUSR | S_IWUSR | S_IEXEC);
 166         if (fd < 0) {
 167                 rsyserr(FERROR, errno, "Batch file %s open error",
 168                         safe_fname(filename));
 169                 exit_cleanup(1);
 170         }
 171
 172         /* Write argvs info to BATCH.sh file */
 173         write_arg(fd, argv[0]);
 174         if (filter_list.head) {
 175                 if (protocol_version >= 29)
 176                         write_sbuf(fd, " --filter=._-");
 177                 else
 178                         write_sbuf(fd, " --exclude-from=-");
 179         }
 180         for (i = 1; i < argc - file_arg_cnt; i++) {
 181                 p = argv[i];
 182                 if (strncmp(p, "--files-from", 12) == 0
 183                     || strncmp(p, "--filter", 8) == 0
 184                     || strncmp(p, "--include", 9) == 0
 185                     || strncmp(p, "--exclude", 9) == 0) {
 186                         if (strchr(p, '=') == NULL)
 187                                 i++;
 188                         continue;
 189                 }
 190                 if (strcmp(p, "-f") == 0) {
 191                         i++;
 192                         continue;
 193                 }
 194                 write(fd, " ", 1);
 195                 if (strncmp(p, "--write-batch", len = 13) == 0
 196                  || strncmp(p, "--only-write-batch", len = 18) == 0) {
 197                         write(fd, "--read-batch", 12);
 198                         if (p[len] == '=') {
 199                                 write(fd, "=", 1);
 200                                 write_arg(fd, p + len + 1);
 201                         }
 202                 } else
 203                         write_arg(fd, p);
 204         }
 205         if (!(p = check_for_hostspec(argv[argc - 1], &p, &i)))
 206                 p = argv[argc - 1];
 207         write(fd, " ${1:-", 6);
 208         write_arg(fd, p);
 209         write_byte(fd, '}');
 210         if (filter_list.head)
 211                 write_filter_rules(fd);
 212         if (write(fd, "\n", 1) != 1 || close(fd) < 0) {
 213                 rsyserr(FERROR, errno, "Batch file %s write error",
 214                         safe_fname(filename));
 215                 exit_cleanup(1);
 216         }
 217 }
 218
 219 void show_flist(int index, struct file_struct **fptr)
 220 {
 221         /*  for debugging    show_flist(flist->count, flist->files * */
 222
 223         int i;
 224         for (i = 0; i < index; i++) {
 225                 rprintf(FINFO, "flist->flags=%#x\n", fptr[i]->flags);
 226                 rprintf(FINFO, "flist->modtime=%#lx\n",
 227                         (long unsigned) fptr[i]->modtime);
 228                 rprintf(FINFO, "flist->length=%.0f\n",
 229                         (double) fptr[i]->length);
 230                 rprintf(FINFO, "flist->mode=%#o\n", (int) fptr[i]->mode);
 231                 rprintf(FINFO, "flist->basename=%s\n",
 232                         safe_fname(fptr[i]->basename));
 233                 if (fptr[i]->dirname) {
 234                         rprintf(FINFO, "flist->dirname=%s\n",
 235                                 safe_fname(fptr[i]->dirname));
 236                 }
 237                 if (am_sender && fptr[i]->dir.root) {
 238                         rprintf(FINFO, "flist->dir.root=%s\n",
 239                                 safe_fname(fptr[i]->dir.root));
 240                 }
 241         }
 242 }
 243
 244 /* for debugging */
 245 void show_argvs(int argc, char *argv[])
 246 {
 247         int i;
 248
 249         rprintf(FINFO, "BATCH.C:show_argvs,argc=%d\n", argc);
 250         for (i = 0; i < argc; i++)
 251                 rprintf(FINFO, "i=%d,argv[i]=%s\n", i, safe_fname(argv[i]));
 252 }