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 = 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                 size_t n = 0;
  70
  71                 result = cli_read(cli, fnum, data, nread, read_size, &n);
  72                 if (!NT_STATUS_IS_OK(result)) {
  73                         goto out;
  74                 }
  75
  76                 if (n == 0)
  77                         break;
  78
  79                 if (write(fd, data, n) != n) {
  80                         break;
  81                 }
  82
  83                 nread += n;
  84         }
  85
  86         result = NT_STATUS_OK;
  87
  88  out:
  89         SAFE_FREE(data);
  90         if (fnum) {
  91                 cli_close(cli, fnum);
  92         }
  93         if (fd != -1) {
  94                 close(fd);
  95         }
  96
  97         return result;
  98 }
  99
 100 /****************************************************************
 101  copy dir
 102 ****************************************************************/
 103
 104 static NTSTATUS gpo_copy_dir(const char *unix_path)
 105 {
 106         if ((mkdir(unix_path, 0644)) < 0 && errno != EEXIST) {
 107                 return map_nt_error_from_unix(errno);
 108         }
 109
 110         return NT_STATUS_OK;
 111 }
 112
 113 /****************************************************************
 114  sync files
 115 ****************************************************************/
 116
 117 static NTSTATUS gpo_sync_files(struct sync_context *ctx)
 118 {
 119         NTSTATUS status;
 120
 121         DEBUG(3,("calling cli_list with mask: %s\n", ctx->mask));
 122
 123         status = cli_list(ctx->cli, ctx->mask, ctx->attribute, gpo_sync_func,
 124                           ctx);
 125         if (!NT_STATUS_IS_OK(status)) {
 126                 DEBUG(1, ("listing [%s] failed with error: %s\n",
 127                           ctx->mask, nt_errstr(status)));
 128                 return status;
 129         }
 130
 131         return status;
 132 }
 133
 134 /****************************************************************
 135  syncronisation call back
 136 ****************************************************************/
 137
 138 static NTSTATUS gpo_sync_func(const char *mnt,
 139                           struct file_info *info,
 140                           const char *mask,
 141                           void *state)
 142 {
 143         NTSTATUS result;
 144         struct sync_context *ctx;
 145         fstring nt_filename, unix_filename;
 146         fstring nt_dir, unix_dir;
 147         char *old_nt_dir, *old_unix_dir;
 148
 149         ctx = (struct sync_context *)state;
 150
 151         if (strequal(info->name, ".") || strequal(info->name, "..")) {
 152                 return NT_STATUS_OK;
 153         }
 154
 155         DEBUG(5,("gpo_sync_func: got mask: [%s], name: [%s]\n",
 156                 mask, info->name));
 157
 158         if (info->attr & FILE_ATTRIBUTE_DIRECTORY) {
 159
 160                 DEBUG(3,("got dir: [%s]\n", info->name));
 161
 162                 fstrcpy(nt_dir, ctx->remote_path);
 163                 fstrcat(nt_dir, "\\");
 164                 fstrcat(nt_dir, info->name);
 165
 166                 fstrcpy(unix_dir, ctx->local_path);
 167                 fstrcat(unix_dir, "/");
 168                 fstrcat(unix_dir, info->name);
 169
 170                 result = gpo_copy_dir(unix_dir);
 171                 if (!NT_STATUS_IS_OK(result)) {
 172                         DEBUG(1,("failed to copy dir: %s\n",
 173                                 nt_errstr(result)));
 174                         return result;
 175                 }
 176
 177                 old_nt_dir = ctx->remote_path;
 178                 ctx->remote_path = talloc_strdup(ctx->mem_ctx, nt_dir);
 179
 180                 old_unix_dir = ctx->local_path;
 181                 ctx->local_path = talloc_strdup(ctx->mem_ctx, unix_dir);
 182
 183                 ctx->mask = talloc_asprintf(ctx->mem_ctx,
 184                                         "%s\\*",
 185                                         nt_dir);
 186                 if (!ctx->local_path || !ctx->mask || !ctx->remote_path) {
 187                         DEBUG(0,("gpo_sync_func: ENOMEM\n"));
 188                         return NT_STATUS_NO_MEMORY;
 189                 }
 190                 result = gpo_sync_files(ctx);
 191                 if (!NT_STATUS_IS_OK(result)) {
 192                         DEBUG(0,("could not sync files\n"));
 193                         return result;
 194                 }
 195
 196                 ctx->remote_path = old_nt_dir;
 197                 ctx->local_path = old_unix_dir;
 198                 return NT_STATUS_OK;
 199         }
 200
 201         DEBUG(3,("got file: [%s]\n", info->name));
 202
 203         fstrcpy(nt_filename, ctx->remote_path);
 204         fstrcat(nt_filename, "\\");
 205         fstrcat(nt_filename, info->name);
 206
 207         fstrcpy(unix_filename, ctx->local_path);
 208         fstrcat(unix_filename, "/");
 209         fstrcat(unix_filename, info->name);
 210
 211         result = gpo_copy_file(ctx->mem_ctx, ctx->cli,
 212                                nt_filename, unix_filename);
 213         if (!NT_STATUS_IS_OK(result)) {
 214                 DEBUG(1,("failed to copy file: %s\n",
 215                         nt_errstr(result)));
 216         }
 217         return result;
 218 }
 219
 220
 221 /****************************************************************
 222  list a remote directory and download recursively
 223 ****************************************************************/
 224
 225 NTSTATUS gpo_sync_directories(TALLOC_CTX *mem_ctx,
 226                               struct cli_state *cli,
 227                               const char *nt_path,
 228                               const char *local_path)
 229 {
 230         struct sync_context ctx;
 231
 232         ctx.mem_ctx     = mem_ctx;
 233         ctx.cli         = cli;
 234         ctx.remote_path = discard_const_p(char, nt_path);
 235         ctx.local_path  = discard_const_p(char, local_path);
 236         ctx.attribute   = (FILE_ATTRIBUTE_SYSTEM | FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_DIRECTORY);
 237
 238         ctx.mask = talloc_asprintf(mem_ctx,
 239                                 "%s\\*",
 240                                 nt_path);
 241         if (!ctx.mask) {
 242                 return NT_STATUS_NO_MEMORY;
 243         }
 244
 245         return gpo_sync_files(&ctx);
 246 }