examples/libsmbclient/testacl.c

   1 #include <stdlib.h>
   2 #include <string.h>
   3 #include <errno.h>
   4 #include <popt.h>
   5 #include "libsmbclient.h"
   6 #include "get_auth_data_fn.h"
   7
   8 enum acl_mode
   9 {
  10         SMB_ACL_LIST,
  11         SMB_ACL_GET,
  12         SMB_ACL_SET,
  13         SMB_ACL_DELETE,
  14         SMB_ACL_MODIFY,
  15         SMB_ACL_ADD,
  16         SMB_ACL_CHOWN,
  17         SMB_ACL_CHGRP
  18 };
  19
  20
  21 int main(int argc, const char *argv[])
  22 {
  23         int opt;
  24         int flags = 0;
  25         int debug = 0;
  26         int numeric = 0;
  27         int stat_and_retry = 0;
  28         int full_time_names = 0;
  29         enum acl_mode mode = SMB_ACL_LIST;
  30         static const char *the_acl = NULL;
  31         int ret;
  32         char *p;
  33         const char *debugstr;
  34         char path[1024];
  35         char value[1024];
  36         poptContext pc;
  37         struct stat st;
  38         struct poptOption long_options[] =
  39                 {
  40                         POPT_AUTOHELP
  41                         {
  42                                 .longName   = "numeric",
  43                                 .shortName  = 'n',
  44                                 .argInfo    = POPT_ARG_NONE,
  45                                 .arg        = &numeric,
  46                                 .val        = 1,
  47                                 .descrip    = "Don't resolve sids or masks to names"
  48                         },
  49                         {
  50                                 .longName   = "debug",
  51                                 .shortName  = 'd',
  52                                 .argInfo    = POPT_ARG_INT,
  53                                 .arg        = &debug,
  54                                 .val        = 0,
  55                                 .descrip    = "Set debug level (0-100)"
  56                         },
  57                         {
  58                                 .longName   = "full_time_names",
  59                                 .shortName  = 'f',
  60                                 .argInfo    = POPT_ARG_NONE,
  61                                 .arg        = &full_time_names,
  62                                 .val        = 1,
  63                                 .descrip    = "Use new style xattr names, which include CREATE_TIME"
  64                         },
  65                         {
  66                                 .longName   = "delete",
  67                                 .shortName  = 'D',
  68                                 .argInfo    = POPT_ARG_STRING,
  69                                 .arg        = NULL,
  70                                 .val        = 'D',
  71                                 .descrip    = "Delete an acl",
  72                                 .argDescrip = "ACL"
  73                         },
  74                         {
  75                                 .longName   = "modify",
  76                                 .shortName  = 'M',
  77                                 .argInfo    = POPT_ARG_STRING,
  78                                 .arg        = NULL,
  79                                 .val        = 'M',
  80                                 .descrip    = "Modify an acl",
  81                                 .argDescrip = "ACL"
  82                         },
  83                         {
  84                                 .longName   = "add",
  85                                 .shortName  = 'a',
  86                                 .argInfo    = POPT_ARG_STRING,
  87                                 .arg        = NULL,
  88                                 .val        = 'a',
  89                                 .descrip    = "Add an acl",
  90                                 .argDescrip = "ACL"
  91                         },
  92                         {
  93                                 .longName   = "set",
  94                                 .shortName  = 'S',
  95                                 .argInfo    = POPT_ARG_STRING,
  96                                 .arg        = NULL,
  97                                 .val        = 'S',
  98                                 .descrip    = "Set acls",
  99                                 .argDescrip = "ACLS"
 100                         },
 101                         {
 102                                 .longName   = "chown",
 103                                 .shortName  = 'C',
 104                                 .argInfo    = POPT_ARG_STRING,
 105                                 .arg        = NULL,
 106                                 .val        = 'C',
 107                                 .descrip    = "Change ownership of a file",
 108                                 .argDescrip = "USERNAME"
 109                         },
 110                         {
 111                                 .longName   = "chgrp",
 112                                 .shortName  = 'G',
 113                                 .argInfo    = POPT_ARG_STRING,
 114                                 .arg        = NULL,
 115                                 .val        = 'G',
 116                                 .descrip    = "Change group ownership of a file",
 117                                 .argDescrip = "GROUPNAME"
 118                         },
 119                         {
 120                                 .longName   = "get",
 121                                 .shortName  = 'g',
 122                                 .argInfo    = POPT_ARG_STRING,
 123                                 .arg        = NULL,
 124                                 .val        = 'g',
 125                                 .descrip    = "Get a specific acl attribute",
 126                                 .argDescrip = "ACL"
 127                         },
 128                         {
 129                                 .longName   = "stat_and_retry",
 130                                 .shortName  = 'R',
 131                                 .argInfo    = POPT_ARG_NONE,
 132                                 .arg        = &stat_and_retry,
 133                                 .val        = 1,
 134                                 .descrip    = "After 'get' do 'stat' and another 'get'"
 135                         },
 136                         POPT_TABLEEND
 137                 };
 138
 139         setbuf(stdout, NULL);
 140
 141         pc = poptGetContext("smbcacls", argc, argv, long_options, 0);
 142
 143         poptSetOtherOptionHelp(pc, "smb://server1/share1/filename");
 144
 145         while ((opt = poptGetNextOpt(pc)) != -1) {
 146                 switch (opt) {
 147                 case 'S':
 148                         the_acl = strdup(poptGetOptArg(pc));
 149                         mode = SMB_ACL_SET;
 150                         break;
 151
 152                 case 'D':
 153                         the_acl = strdup(poptGetOptArg(pc));
 154                         mode = SMB_ACL_DELETE;
 155                         break;
 156
 157                 case 'M':
 158                         the_acl = strdup(poptGetOptArg(pc));
 159                         mode = SMB_ACL_MODIFY;
 160                         break;
 161
 162                 case 'a':
 163                         the_acl = strdup(poptGetOptArg(pc));
 164                         mode = SMB_ACL_ADD;
 165                         break;
 166
 167                 case 'g':
 168                         the_acl = strdup(poptGetOptArg(pc));
 169                         mode = SMB_ACL_GET;
 170                         break;
 171
 172                 case 'C':
 173                         the_acl = strdup(poptGetOptArg(pc));
 174                         mode = SMB_ACL_CHOWN;
 175                         break;
 176
 177                 case 'G':
 178                         the_acl = strdup(poptGetOptArg(pc));
 179                         mode = SMB_ACL_CHGRP;
 180                         break;
 181                 }
 182         }
 183
 184         /* Make connection to server */
 185         if(!poptPeekArg(pc)) {
 186                 poptPrintUsage(pc, stderr, 0);
 187                 return 1;
 188         }
 189
 190         strncpy(path, poptGetArg(pc), sizeof(path));
 191         path[sizeof(path)-1] = '\0';
 192
 193         if (smbc_init(get_auth_data_fn, debug) != 0)
 194         {
 195                 printf("Could not initialize smbc_ library\n");
 196                 return 1;
 197         }
 198
 199         if (full_time_names) {
 200                 SMBCCTX *context = smbc_set_context(NULL);
 201                 smbc_setOptionFullTimeNames(context, 1);
 202         }
 203
 204         /* Perform requested action */
 205
 206         switch(mode)
 207         {
 208         case SMB_ACL_LIST:
 209                 ret = smbc_listxattr(path, value, sizeof(value)-2);
 210                 if (ret < 0)
 211                 {
 212                         printf("Could not get attribute list for [%s] %d: %s\n",
 213                                path, errno, strerror(errno));
 214                         return 1;
 215                 }
 216
 217                 /*
 218                  * The list of attributes has a series of null-terminated strings.
 219                  * The list of strings terminates with an extra null byte, thus two in
 220                  * a row.  Ensure that our buffer, which is conceivably shorter than
 221                  * the list of attributes, actually ends with two null bytes in a row.
 222                  */
 223                 value[sizeof(value) - 2] = '\0';
 224                 value[sizeof(value) - 1] = '\0';
 225                 printf("Supported attributes:\n");
 226                 for (p = value; *p; p += strlen(p) + 1)
 227                 {
 228                         printf("\t%s\n", p);
 229                 }
 230                 break;
 231
 232         case SMB_ACL_GET:
 233                 do
 234                 {
 235                         if (the_acl == NULL)
 236                         {
 237                                 if (numeric)
 238                                 {
 239                                         the_acl = "system.*";
 240                                 }
 241                                 else
 242                                 {
 243                                         the_acl = "system.*+";
 244                                 }
 245                         }
 246                         ret = smbc_getxattr(path, the_acl, value, sizeof(value));
 247                         if (ret < 0)
 248                         {
 249                                 printf("Could not get attributes for [%s] %d: %s\n",
 250                                        path, errno, strerror(errno));
 251                                 return 1;
 252                         }
 253
 254                         printf("Attributes for [%s] are:\n%s\n", path, value);
 255
 256                         if (stat_and_retry)
 257                         {
 258                                 if (smbc_stat(path, &st) < 0)
 259                                 {
 260                                         perror("smbc_stat");
 261                                         return 1;
 262                                 }
 263                         }
 264
 265                         --stat_and_retry;
 266                 } while (stat_and_retry >= 0);
 267                 break;
 268
 269         case SMB_ACL_ADD:
 270                 flags = SMBC_XATTR_FLAG_CREATE;
 271                 debugstr = "add attributes";
 272                 goto do_set;
 273
 274         case SMB_ACL_MODIFY:
 275                 flags = SMBC_XATTR_FLAG_REPLACE;
 276                 debugstr = "modify attributes";
 277                 goto do_set;
 278
 279         case SMB_ACL_CHOWN:
 280                 snprintf(value, sizeof(value),
 281                          "system.nt_sec_desc.owner%s:%s",
 282                          numeric ? "" : "+", the_acl);
 283                 the_acl = value;
 284                 debugstr = "chown owner";
 285                 goto do_set;
 286
 287         case SMB_ACL_CHGRP:
 288                 snprintf(value, sizeof(value),
 289                          "system.nt_sec_desc.group%s:%s",
 290                          numeric ? "" : "+", the_acl);
 291                 the_acl = value;
 292                 debugstr = "change group";
 293                 goto do_set;
 294
 295         case SMB_ACL_SET:
 296                 flags = 0;
 297                 debugstr = "set attributes";
 298
 299         do_set:
 300                 if ((p = strchr(the_acl, ':')) == NULL)
 301                 {
 302                         printf("Missing value.  ACL must be name:value pair\n");
 303                         return 1;
 304                 }
 305
 306                 *p++ = '\0';
 307
 308                 ret = smbc_setxattr(path, the_acl, p, strlen(p), flags);
 309                 if (ret < 0)
 310                 {
 311                         printf("Could not %s for [%s] %d: %s\n",
 312                                debugstr, path, errno, strerror(errno));
 313                         return 1;
 314                 }
 315                 break;
 316
 317         case SMB_ACL_DELETE:
 318                 ret = smbc_removexattr(path, the_acl);
 319                 if (ret < 0)
 320                 {
 321                         printf("Could not remove attribute %s for [%s] %d:%s\n",
 322                                the_acl, path, errno, strerror(errno));
 323                         return 1;
 324                 }
 325                 break;
 326
 327         default:
 328                 printf("operation not yet implemented\n");
 329                 break;
 330         }
 331
 332         return 0;
 333 }