source/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, write to the Free Software
  18  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  */
  20
  21 #include "includes.h"
  22
  23 struct sync_context {
  24         TALLOC_CTX *mem_ctx;
  25         struct cli_state *cli;
  26         char *remote_path;
  27         char *local_path;
  28         pstring mask;
  29         uint16 attribute;
  30 };
  31
  32 static void gpo_sync_func(const char *mnt,
  33                            file_info *info,
  34                            const char *mask,
  35                            void *state);
  36
  37 NTSTATUS gpo_copy_file(TALLOC_CTX *mem_ctx,
  38                        struct cli_state *cli,
  39                        const char *nt_path,
  40                        const char *unix_path)
  41 {
  42         NTSTATUS result;
  43         int fnum;
  44         int fd = 0;
  45         char *data = NULL;
  46         static int io_bufsize = 64512;
  47         int read_size = io_bufsize;
  48         off_t start = 0;
  49         off_t nread = 0;
  50
  51         if ((fnum = cli_open(cli, nt_path, O_RDONLY, DENY_NONE)) == -1) {
  52                 result = NT_STATUS_NO_SUCH_FILE;
  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 + start, 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) {
  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, ctx->mask, ctx->attribute, gpo_sync_func, ctx) == -1) {
 116                 DEBUG(1,("listing [%s] failed with error: %s\n",
 117                         ctx->mask, cli_errstr(ctx->cli)));
 118                 return False;
 119         }
 120
 121         return True;
 122 }
 123
 124 /****************************************************************
 125  syncronisation call back
 126 ****************************************************************/
 127
 128 static void gpo_sync_func(const char *mnt,
 129                           file_info *info,
 130                           const char *mask,
 131                           void *state)
 132 {
 133         NTSTATUS result;
 134         struct sync_context *ctx;
 135         fstring nt_filename, unix_filename;
 136         fstring nt_dir, unix_dir;
 137         char *old_nt_dir, *old_unix_dir;
 138
 139         ctx = (struct sync_context *)state;
 140
 141         if (strequal(info->name, ".") || strequal(info->name, "..")) {
 142                 return;
 143         }
 144
 145         DEBUG(5,("gpo_sync_func: got mask: [%s], name: [%s]\n",
 146                 mask, info->name));
 147
 148         if (info->mode & aDIR) {
 149
 150                 DEBUG(3,("got dir: [%s]\n", info->name));
 151
 152                 fstrcpy(nt_dir, ctx->remote_path);
 153                 fstrcat(nt_dir, "\\");
 154                 fstrcat(nt_dir, info->name);
 155
 156                 fstrcpy(unix_dir, ctx->local_path);
 157                 fstrcat(unix_dir, "/");
 158                 fstrcat(unix_dir, info->name);
 159
 160                 result = gpo_copy_dir(unix_dir);
 161                 if (!NT_STATUS_IS_OK(result)) {
 162                         DEBUG(1,("failed to copy dir: %s\n", nt_errstr(result)));
 163                 }
 164
 165                 old_nt_dir = ctx->remote_path;
 166                 ctx->remote_path = nt_dir;
 167
 168                 old_unix_dir = ctx->local_path;
 169                 ctx->local_path = talloc_strdup(ctx->mem_ctx, unix_dir);
 170
 171                 pstrcpy(ctx->mask, nt_dir);
 172                 pstrcat(ctx->mask, "\\*");
 173
 174                 if (!gpo_sync_files(ctx)) {
 175                         DEBUG(0,("could not sync files\n"));
 176                 }
 177
 178                 ctx->remote_path = old_nt_dir;
 179                 ctx->local_path = old_unix_dir;
 180                 return;
 181         }
 182
 183         DEBUG(3,("got file: [%s]\n", info->name));
 184
 185         fstrcpy(nt_filename, ctx->remote_path);
 186         fstrcat(nt_filename, "\\");
 187         fstrcat(nt_filename, info->name);
 188
 189         fstrcpy(unix_filename, ctx->local_path);
 190         fstrcat(unix_filename, "/");
 191         fstrcat(unix_filename, info->name);
 192
 193         result = gpo_copy_file(ctx->mem_ctx, ctx->cli, nt_filename, unix_filename);
 194         if (!NT_STATUS_IS_OK(result)) {
 195                 DEBUG(1,("failed to copy file: %s\n", nt_errstr(result)));
 196         }
 197 }
 198
 199
 200 /****************************************************************
 201  list a remote directory and download recursivly
 202 ****************************************************************/
 203
 204 NTSTATUS gpo_sync_directories(TALLOC_CTX *mem_ctx,
 205                               struct cli_state *cli,
 206                               const char *nt_path,
 207                               const char *local_path)
 208 {
 209         struct sync_context ctx;
 210
 211         ctx.mem_ctx     = mem_ctx;
 212         ctx.cli         = cli;
 213         ctx.remote_path = CONST_DISCARD(char *, nt_path);
 214         ctx.local_path  = CONST_DISCARD(char *, local_path);
 215         ctx.attribute   = (aSYSTEM | aHIDDEN | aDIR);
 216
 217         pstrcpy(ctx.mask, nt_path);
 218         pstrcat(ctx.mask, "\\*");
 219
 220         if (!gpo_sync_files(&ctx)) {
 221                 return NT_STATUS_NO_SUCH_FILE;
 222         }
 223
 224         return NT_STATUS_OK;
 225 }