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