source4/libgpo/gpo_filesync.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  Group Policy Object Support
   4  *
   5  *  Copyright (C) Guenther Deschner 2006
   6  *  Copyright (C) Wilco Baan Hofman 2008
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 3 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22 #include "includes.h"
  23 #include "libcli/libcli.h"
  24 #include "system/filesys.h"
  25
  26
  27 struct sync_context {
  28         TALLOC_CTX *mem_ctx;
  29         struct smbcli_state *cli;
  30         char *remote_path;
  31         char *local_path;
  32         char *mask;
  33         uint16_t attribute;
  34 };
  35
  36 static void gpo_sync_func(struct clilist_file_info *info,
  37                           const char *mask,
  38                           void *state);
  39
  40 NTSTATUS gpo_copy_file(TALLOC_CTX *mem_ctx,
  41                        struct smbcli_state *cli,
  42                        const char *nt_path,
  43                        const char *unix_path)
  44 {
  45         NTSTATUS result;
  46         int fnum;
  47         int fd = 0;
  48         char *data = NULL;
  49         static int io_bufsize = 64512;
  50         int read_size = io_bufsize;
  51         off_t nread = 0;
  52
  53         if ((fnum = smbcli_open(cli->tree, nt_path, O_RDONLY, DENY_NONE)) == -1) {
  54                 result = NT_STATUS_NO_SUCH_FILE;
  55                 goto out;
  56         }
  57
  58         if ((fd = open(unix_path, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1) {
  59                 result = map_nt_error_from_unix(errno);
  60                 goto out;
  61         }
  62
  63         if ((data = talloc_size(mem_ctx, read_size)) == NULL) {
  64                 result = NT_STATUS_NO_MEMORY;
  65                 goto out;
  66         }
  67
  68         while (1) {
  69
  70                 int n = smbcli_read(cli->tree, fnum, data, nread, read_size);
  71
  72                 if (n <= 0)
  73                         break;
  74
  75                 if (write(fd, data, n) != n) {
  76                         break;
  77                 }
  78
  79                 nread += n;
  80         }
  81
  82         result = NT_STATUS_OK;
  83
  84  out:
  85         SAFE_FREE(data);
  86         if (fnum) {
  87                 smbcli_close(cli->tree, fnum);
  88         }
  89         if (fd) {
  90                 close(fd);
  91         }
  92
  93         return result;
  94 }
  95
  96 /****************************************************************
  97  copy dir
  98 ****************************************************************/
  99
 100 static NTSTATUS gpo_copy_dir(const char *nt_dir, const char *unix_path)
 101 {
 102         if ((mkdir(unix_path, 0644)) < 0 && errno != EEXIST) {
 103                 return NT_STATUS_ACCESS_DENIED;
 104         }
 105
 106         return NT_STATUS_OK;
 107 }
 108
 109 /****************************************************************
 110  sync files
 111 ****************************************************************/
 112
 113 static bool gpo_sync_files(struct sync_context *ctx)
 114 {
 115         DEBUG(3,("calling cli_list with mask: %s\n", ctx->mask));
 116
 117         if (smbcli_list(ctx->cli->tree,
 118                      ctx->mask,
 119                      ctx->attribute,
 120                      gpo_sync_func,
 121                      ctx) == -1) {
 122                 DEBUG(1,("listing [%s] failed with error: %s\n",
 123                         ctx->mask, smbcli_errstr(ctx->cli->tree)));
 124                 return false;
 125         }
 126
 127         return true;
 128 }
 129
 130 /****************************************************************
 131  syncronisation call back
 132 ****************************************************************/
 133
 134 static void gpo_sync_func(struct clilist_file_info *info,
 135                           const char *mask,
 136                           void *state)
 137 {
 138         NTSTATUS result;
 139         struct sync_context *ctx;
 140         char *nt_filename, *unix_filename;
 141         char *nt_dir, *unix_dir;
 142         char *old_nt_dir, *old_unix_dir;
 143
 144         ctx = (struct sync_context *)state;
 145
 146         if (strequal(info->name, ".") || strequal(info->name, "..")) {
 147                 return;
 148         }
 149
 150         DEBUG(5,("gpo_sync_func: got mask: [%s], name: [%s]\n",
 151                 mask, info->name));
 152
 153         if (info->attrib & FILE_ATTRIBUTE_DIRECTORY) {
 154
 155                 DEBUG(3,("got dir: [%s]\n", info->name));
 156
 157                 nt_dir = talloc_asprintf(ctx->mem_ctx, "%s\\%s",
 158                                 ctx->remote_path,
 159                                 info->name);
 160
 161                 unix_dir = talloc_asprintf(ctx->mem_ctx, "%s/%s",
 162                                 ctx->local_path,
 163                                 info->name);
 164
 165                 result = gpo_copy_dir(nt_dir, unix_dir);
 166                 if (!NT_STATUS_IS_OK(result)) {
 167                         DEBUG(1,("failed to copy dir: %s\n",
 168                                 nt_errstr(result)));
 169                 }
 170
 171                 old_nt_dir = ctx->remote_path;
 172                 ctx->remote_path = talloc_strdup(ctx->mem_ctx, nt_dir);
 173
 174                 old_unix_dir = ctx->local_path;
 175                 ctx->local_path = talloc_strdup(ctx->mem_ctx, unix_dir);
 176
 177                 ctx->mask = talloc_asprintf(ctx->mem_ctx,
 178                                         "%s\\*",
 179                                         nt_dir);
 180                 if (!ctx->local_path || !ctx->mask || !ctx->remote_path) {
 181                         DEBUG(0,("gpo_sync_func: ENOMEM\n"));
 182                         return;
 183                 }
 184                 if (!gpo_sync_files(ctx)) {
 185                         DEBUG(0,("could not sync files\n"));
 186                 }
 187
 188                 ctx->remote_path = old_nt_dir;
 189                 ctx->local_path = old_unix_dir;
 190                 return;
 191         }
 192
 193         DEBUG(3,("got file: [%s]\n", info->name));
 194
 195         nt_filename = talloc_asprintf(ctx->mem_ctx, "%s\\%s",
 196                         ctx->remote_path,
 197                         info->name);
 198
 199         unix_filename = talloc_asprintf(ctx->mem_ctx, "%s/%s",
 200                         ctx->local_path,
 201                         info->name);
 202
 203         result = gpo_copy_file(ctx->mem_ctx, ctx->cli,
 204                                nt_filename, unix_filename);
 205         if (!NT_STATUS_IS_OK(result)) {
 206                 DEBUG(1,("failed to copy file: %s\n",
 207                         nt_errstr(result)));
 208         }
 209 }
 210
 211
 212 /****************************************************************
 213  list a remote directory and download recursivly
 214 ****************************************************************/
 215
 216 NTSTATUS gpo_sync_directories(TALLOC_CTX *mem_ctx,
 217                               struct smbcli_state *cli,
 218                               const char *nt_path,
 219                               const char *local_path)
 220 {
 221         struct sync_context ctx;
 222
 223         ctx.mem_ctx     = mem_ctx;
 224         ctx.cli         = cli;
 225         ctx.remote_path = discard_const_p(char, nt_path);
 226         ctx.local_path  = discard_const_p(char, local_path);
 227         ctx.attribute   = (FILE_ATTRIBUTE_SYSTEM | FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_DIRECTORY);
 228
 229         ctx.mask = talloc_asprintf(mem_ctx,
 230                                 "%s\\*",
 231                                 nt_path);
 232         if (!ctx.mask) {
 233                 return NT_STATUS_NO_MEMORY;
 234         }
 235
 236         if (!gpo_sync_files(&ctx)) {
 237                 return NT_STATUS_NO_SUCH_FILE;
 238         }
 239
 240         return NT_STATUS_OK;
 241 }