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 "../libgpo/gpo.h"
  22 #include "libgpo/gpo_proto.h"
  23
  24 struct sync_context {
  25         TALLOC_CTX *mem_ctx;
  26         struct cli_state *cli;
  27         char *remote_path;
  28         char *local_path;
  29         char *mask;
  30         uint16_t attribute;
  31 };
  32
  33 static void gpo_sync_func(const char *mnt,
  34                           file_info *info,
  35                           const char *mask,
  36                           void *state);
  37
  38 NTSTATUS gpo_copy_file(TALLOC_CTX *mem_ctx,
  39                        struct cli_state *cli,
  40                        const char *nt_path,
  41                        const char *unix_path)
  42 {
  43         NTSTATUS result;
  44         uint16_t fnum;
  45         int fd = -1;
  46         char *data = NULL;
  47         static int io_bufsize = 64512;
  48         int read_size = io_bufsize;
  49         off_t nread = 0;
  50
  51         result = cli_open(cli, nt_path, O_RDONLY, DENY_NONE, &fnum);
  52         if (!NT_STATUS_IS_OK(result)) {
  53                 goto out;
  54         }
  55
  56         if ((fd = sys_open(unix_path, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1) {
  57                 result = map_nt_error_from_unix(errno);
  58                 goto out;
  59         }
  60
  61         if ((data = (char *)SMB_MALLOC(read_size)) == NULL) {
  62                 result = NT_STATUS_NO_MEMORY;
  63                 goto out;
  64         }
  65
  66         while (1) {
  67
  68                 int n = cli_read(cli, fnum, data, nread, read_size);
  69
  70                 if (n <= 0)
  71                         break;
  72
  73                 if (write(fd, data, n) != n) {
  74                         break;
  75                 }
  76
  77                 nread += n;
  78         }
  79
  80         result = NT_STATUS_OK;
  81
  82  out:
  83         SAFE_FREE(data);
  84         if (fnum) {
  85                 cli_close(cli, fnum);
  86         }
  87         if (fd != -1) {
  88                 close(fd);
  89         }
  90
  91         return result;
  92 }
  93
  94 /****************************************************************
  95  copy dir
  96 ****************************************************************/
  97
  98 static NTSTATUS gpo_copy_dir(const char *unix_path)
  99 {
 100         if ((mkdir(unix_path, 0644)) < 0 && errno != EEXIST) {
 101                 return NT_STATUS_ACCESS_DENIED;
 102         }
 103
 104         return NT_STATUS_OK;
 105 }
 106
 107 /****************************************************************
 108  sync files
 109 ****************************************************************/
 110
 111 static bool gpo_sync_files(struct sync_context *ctx)
 112 {
 113         DEBUG(3,("calling cli_list with mask: %s\n", ctx->mask));
 114
 115         if (cli_list(ctx->cli,
 116                      ctx->mask,
 117                      ctx->attribute,
 118                      gpo_sync_func,
 119                      ctx) == -1) {
 120                 DEBUG(1,("listing [%s] failed with error: %s\n",
 121                         ctx->mask, cli_errstr(ctx->cli)));
 122                 return false;
 123         }
 124
 125         return true;
 126 }
 127
 128 /****************************************************************
 129  syncronisation call back
 130 ****************************************************************/
 131
 132 static void gpo_sync_func(const char *mnt,
 133                           file_info *info,
 134                           const char *mask,
 135                           void *state)
 136 {
 137         NTSTATUS result;
 138         struct sync_context *ctx;
 139         fstring nt_filename, unix_filename;
 140         fstring nt_dir, unix_dir;
 141         char *old_nt_dir, *old_unix_dir;
 142
 143         ctx = (struct sync_context *)state;
 144
 145         if (strequal(info->name, ".") || strequal(info->name, "..")) {
 146                 return;
 147         }
 148
 149         DEBUG(5,("gpo_sync_func: got mask: [%s], name: [%s]\n",
 150                 mask, info->name));
 151
 152         if (info->mode & aDIR) {
 153
 154                 DEBUG(3,("got dir: [%s]\n", info->name));
 155
 156                 fstrcpy(nt_dir, ctx->remote_path);
 157                 fstrcat(nt_dir, "\\");
 158                 fstrcat(nt_dir, info->name);
 159
 160                 fstrcpy(unix_dir, ctx->local_path);
 161                 fstrcat(unix_dir, "/");
 162                 fstrcat(unix_dir, info->name);
 163
 164                 result = gpo_copy_dir(unix_dir);
 165                 if (!NT_STATUS_IS_OK(result)) {
 166                         DEBUG(1,("failed to copy dir: %s\n",
 167                                 nt_errstr(result)));
 168                 }
 169
 170                 old_nt_dir = ctx->remote_path;
 171                 ctx->remote_path = talloc_strdup(ctx->mem_ctx, nt_dir);
 172
 173                 old_unix_dir = ctx->local_path;
 174                 ctx->local_path = talloc_strdup(ctx->mem_ctx, unix_dir);
 175
 176                 ctx->mask = talloc_asprintf(ctx->mem_ctx,
 177                                         "%s\\*",
 178                                         nt_dir);
 179                 if (!ctx->local_path || !ctx->mask || !ctx->remote_path) {
 180                         DEBUG(0,("gpo_sync_func: ENOMEM\n"));
 181                         return;
 182                 }
 183                 if (!gpo_sync_files(ctx)) {
 184                         DEBUG(0,("could not sync files\n"));
 185                 }
 186
 187                 ctx->remote_path = old_nt_dir;
 188                 ctx->local_path = old_unix_dir;
 189                 return;
 190         }
 191
 192         DEBUG(3,("got file: [%s]\n", info->name));
 193
 194         fstrcpy(nt_filename, ctx->remote_path);
 195         fstrcat(nt_filename, "\\");
 196         fstrcat(nt_filename, info->name);
 197
 198         fstrcpy(unix_filename, ctx->local_path);
 199         fstrcat(unix_filename, "/");
 200         fstrcat(unix_filename, info->name);
 201
 202         result = gpo_copy_file(ctx->mem_ctx, ctx->cli,
 203                                nt_filename, unix_filename);
 204         if (!NT_STATUS_IS_OK(result)) {
 205                 DEBUG(1,("failed to copy file: %s\n",
 206                         nt_errstr(result)));
 207         }
 208 }
 209
 210
 211 /****************************************************************
 212  list a remote directory and download recursivly
 213 ****************************************************************/
 214
 215 NTSTATUS gpo_sync_directories(TALLOC_CTX *mem_ctx,
 216                               struct cli_state *cli,
 217                               const char *nt_path,
 218                               const char *local_path)
 219 {
 220         struct sync_context ctx;
 221
 222         ctx.mem_ctx     = mem_ctx;
 223         ctx.cli         = cli;
 224         ctx.remote_path = CONST_DISCARD(char *, nt_path);
 225         ctx.local_path  = CONST_DISCARD(char *, local_path);
 226         ctx.attribute   = (aSYSTEM | aHIDDEN | aDIR);
 227
 228         ctx.mask = talloc_asprintf(mem_ctx,
 229                                 "%s\\*",
 230                                 nt_path);
 231         if (!ctx.mask) {
 232                 return NT_STATUS_NO_MEMORY;
 233         }
 234
 235         if (!gpo_sync_files(&ctx)) {
 236                 return NT_STATUS_NO_SUCH_FILE;
 237         }
 238
 239         return NT_STATUS_OK;
 240 }