source3/libgpo/gpo_filesync.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  Group Policy Object Support
   4  *  Copyright (C) Guenther Deschner 2006
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include "includes.h"
  21 #include "system/filesys.h"
  22 #include "libsmb/libsmb.h"
  23 #include "../libgpo/gpo.h"
  24 #include "libgpo/gpo_proto.h"
  25
  26 struct sync_context {
  27         TALLOC_CTX *mem_ctx;
  28         struct cli_state *cli;
  29         char *remote_path;
  30         char *local_path;
  31         char *mask;
  32         uint16_t attribute;
  33 };
  34
  35 static NTSTATUS gpo_sync_func(const char *mnt,
  36                           struct file_info *info,
  37                           const char *mask,
  38                           void *state);
  39
  40 NTSTATUS gpo_copy_file(TALLOC_CTX *mem_ctx,
  41                        struct cli_state *cli,
  42                        const char *nt_path,
  43                        const char *unix_path)
  44 {
  45         NTSTATUS result;
  46         uint16_t fnum;
  47         int fd = -1;
  48         char *data = NULL;
  49         static int io_bufsize = 64512;
  50         int read_size = io_bufsize;
  51         off_t nread = 0;
  52
  53         result = cli_open(cli, nt_path, O_RDONLY, DENY_NONE, &fnum);
  54         if (!NT_STATUS_IS_OK(result)) {
  55                 goto out;
  56         }
  57
  58         if ((fd = sys_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 = (char *)SMB_MALLOC(read_size)) == NULL) {
  64                 result = NT_STATUS_NO_MEMORY;
  65                 goto out;
  66         }
  67
  68         while (1) {
  69
  70                 int n = cli_read_old(cli, 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                 cli_close(cli, fnum);
  88         }
  89         if (fd != -1) {
  90                 close(fd);
  91         }
  92
  93         return result;
  94 }
  95
  96 /****************************************************************
  97  copy dir
  98 ****************************************************************/
  99
 100 static NTSTATUS gpo_copy_dir(const char *unix_path)
 101 {
 102         if ((mkdir(unix_path, 0644)) < 0 && errno != EEXIST) {
 103                 return map_nt_error_from_unix(errno);
 104         }
 105
 106         return NT_STATUS_OK;
 107 }
 108
 109 /****************************************************************
 110  sync files
 111 ****************************************************************/
 112
 113 static NTSTATUS gpo_sync_files(struct sync_context *ctx)
 114 {
 115         NTSTATUS status;
 116
 117         DEBUG(3,("calling cli_list with mask: %s\n", ctx->mask));
 118
 119         status = cli_list(ctx->cli, ctx->mask, ctx->attribute, gpo_sync_func,
 120                           ctx);
 121         if (!NT_STATUS_IS_OK(status)) {
 122                 DEBUG(1, ("listing [%s] failed with error: %s\n",
 123                           ctx->mask, nt_errstr(status)));
 124                 return status;
 125         }
 126
 127         return status;
 128 }
 129
 130 /****************************************************************
 131  syncronisation call back
 132 ****************************************************************/
 133
 134 static NTSTATUS gpo_sync_func(const char *mnt,
 135                           struct file_info *info,
 136                           const char *mask,
 137                           void *state)
 138 {
 139         NTSTATUS result;
 140         struct sync_context *ctx;
 141         fstring nt_filename, unix_filename;
 142         fstring nt_dir, unix_dir;
 143         char *old_nt_dir, *old_unix_dir;
 144
 145         ctx = (struct sync_context *)state;
 146
 147         if (strequal(info->name, ".") || strequal(info->name, "..")) {
 148                 return NT_STATUS_OK;
 149         }
 150
 151         DEBUG(5,("gpo_sync_func: got mask: [%s], name: [%s]\n",
 152                 mask, info->name));
 153
 154         if (info->mode & FILE_ATTRIBUTE_DIRECTORY) {
 155
 156                 DEBUG(3,("got dir: [%s]\n", info->name));
 157
 158                 fstrcpy(nt_dir, ctx->remote_path);
 159                 fstrcat(nt_dir, "\\");
 160                 fstrcat(nt_dir, info->name);
 161
 162                 fstrcpy(unix_dir, ctx->local_path);
 163                 fstrcat(unix_dir, "/");
 164                 fstrcat(unix_dir, info->name);
 165
 166                 result = gpo_copy_dir(unix_dir);
 167                 if (!NT_STATUS_IS_OK(result)) {
 168                         DEBUG(1,("failed to copy dir: %s\n",
 169                                 nt_errstr(result)));
 170                         return result;
 171                 }
 172
 173                 old_nt_dir = ctx->remote_path;
 174                 ctx->remote_path = talloc_strdup(ctx->mem_ctx, nt_dir);
 175
 176                 old_unix_dir = ctx->local_path;
 177                 ctx->local_path = talloc_strdup(ctx->mem_ctx, unix_dir);
 178
 179                 ctx->mask = talloc_asprintf(ctx->mem_ctx,
 180                                         "%s\\*",
 181                                         nt_dir);
 182                 if (!ctx->local_path || !ctx->mask || !ctx->remote_path) {
 183                         DEBUG(0,("gpo_sync_func: ENOMEM\n"));
 184                         return NT_STATUS_NO_MEMORY;
 185                 }
 186                 result = gpo_sync_files(ctx);
 187                 if (!NT_STATUS_IS_OK(result)) {
 188                         DEBUG(0,("could not sync files\n"));
 189                         return result;
 190                 }
 191
 192                 ctx->remote_path = old_nt_dir;
 193                 ctx->local_path = old_unix_dir;
 194                 return NT_STATUS_OK;
 195         }
 196
 197         DEBUG(3,("got file: [%s]\n", info->name));
 198
 199         fstrcpy(nt_filename, ctx->remote_path);
 200         fstrcat(nt_filename, "\\");
 201         fstrcat(nt_filename, info->name);
 202
 203         fstrcpy(unix_filename, ctx->local_path);
 204         fstrcat(unix_filename, "/");
 205         fstrcat(unix_filename, info->name);
 206
 207         result = gpo_copy_file(ctx->mem_ctx, ctx->cli,
 208                                nt_filename, unix_filename);
 209         if (!NT_STATUS_IS_OK(result)) {
 210                 DEBUG(1,("failed to copy file: %s\n",
 211                         nt_errstr(result)));
 212         }
 213         return result;
 214 }
 215
 216
 217 /****************************************************************
 218  list a remote directory and download recursivly
 219 ****************************************************************/
 220
 221 NTSTATUS gpo_sync_directories(TALLOC_CTX *mem_ctx,
 222                               struct cli_state *cli,
 223                               const char *nt_path,
 224                               const char *local_path)
 225 {
 226         struct sync_context ctx;
 227
 228         ctx.mem_ctx     = mem_ctx;
 229         ctx.cli         = cli;
 230         ctx.remote_path = discard_const_p(char, nt_path);
 231         ctx.local_path  = discard_const_p(char, local_path);
 232         ctx.attribute   = (FILE_ATTRIBUTE_SYSTEM | FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_DIRECTORY);
 233
 234         ctx.mask = talloc_asprintf(mem_ctx,
 235                                 "%s\\*",
 236                                 nt_path);
 237         if (!ctx.mask) {
 238                 return NT_STATUS_NO_MEMORY;
 239         }
 240
 241         return gpo_sync_files(&ctx);
 242 }