lib/param/util.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Samba utility functions
   4    Copyright (C) Andrew Tridgell 1992-1998
   5    Copyright (C) Jeremy Allison 2001-2002
   6    Copyright (C) Simo Sorce 2001
   7    Copyright (C) Jim McDonough (jmcd@us.ibm.com)  2003.
   8    Copyright (C) James J Myers 2003
   9    Copyright (C) Jelmer Vernooij 2005-2007
  10
  11    This program is free software; you can redistribute it and/or modify
  12    it under the terms of the GNU General Public License as published by
  13    the Free Software Foundation; either version 3 of the License, or
  14    (at your option) any later version.
  15
  16    This program is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19    GNU General Public License for more details.
  20
  21    You should have received a copy of the GNU General Public License
  22    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  23 */
  24
  25 #include "includes.h"
  26 #include "dynconfig/dynconfig.h"
  27 #include "system/network.h"
  28 #include "system/filesys.h"
  29 #include "system/dir.h"
  30 #include "param/param.h"
  31
  32 /**
  33  * @file
  34  * @brief Misc utility functions
  35  */
  36
  37
  38 bool lpcfg_is_mydomain(struct loadparm_context *lp_ctx,
  39                              const char *domain)
  40 {
  41         return strequal(lpcfg_workgroup(lp_ctx), domain);
  42 }
  43
  44 bool lpcfg_is_my_domain_or_realm(struct loadparm_context *lp_ctx,
  45                              const char *domain)
  46 {
  47         return strequal(lpcfg_workgroup(lp_ctx), domain) ||
  48                 strequal(lpcfg_realm(lp_ctx), domain);
  49 }
  50
  51 /**
  52   see if a string matches either our primary or one of our secondary
  53   netbios aliases. do a case insensitive match
  54 */
  55 bool lpcfg_is_myname(struct loadparm_context *lp_ctx, const char *name)
  56 {
  57         const char **aliases;
  58         int i;
  59
  60         if (strcasecmp_m(name, lpcfg_netbios_name(lp_ctx)) == 0) {
  61                 return true;
  62         }
  63
  64         aliases = lpcfg_netbios_aliases(lp_ctx);
  65         for (i=0; aliases && aliases[i]; i++) {
  66                 if (strcasecmp_m(name, aliases[i]) == 0) {
  67                         return true;
  68                 }
  69         }
  70
  71         return false;
  72 }
  73
  74
  75 /**
  76  A useful function for returning a path in the Samba lock directory.
  77 **/
  78 char *lpcfg_lock_path(TALLOC_CTX* mem_ctx, struct loadparm_context *lp_ctx,
  79                          const char *name)
  80 {
  81         char *fname, *dname;
  82         if (name == NULL) {
  83                 return NULL;
  84         }
  85         if (name[0] == 0 || name[0] == '/' || strstr(name, ":/")) {
  86                 return talloc_strdup(mem_ctx, name);
  87         }
  88
  89         dname = talloc_strdup(mem_ctx, lpcfg_lockdir(lp_ctx));
  90         trim_string(dname,"","/");
  91
  92         if (!directory_exist(dname)) {
  93                 if (!mkdir(dname,0755))
  94                         DEBUG(1, ("Unable to create directory %s for file %s. "
  95                               "Error was %s\n", dname, name, strerror(errno)));
  96         }
  97
  98         fname = talloc_asprintf(mem_ctx, "%s/%s", dname, name);
  99
 100         talloc_free(dname);
 101
 102         return fname;
 103 }
 104
 105 /**
 106  A useful function for returning a path in the Samba state directory.
 107 **/
 108 char *lpcfg_state_path(TALLOC_CTX* mem_ctx, struct loadparm_context *lp_ctx,
 109                        const char *name)
 110 {
 111         char *fname, *dname;
 112         if (name == NULL) {
 113                 return NULL;
 114         }
 115         if (name[0] == 0 || name[0] == '/' || strstr(name, ":/")) {
 116                 return talloc_strdup(mem_ctx, name);
 117         }
 118
 119         dname = talloc_strdup(mem_ctx, lpcfg_statedir(lp_ctx));
 120         trim_string(dname,"","/");
 121
 122         if (!directory_exist(dname)) {
 123                 mkdir(dname,0755);
 124         }
 125
 126         fname = talloc_asprintf(mem_ctx, "%s/%s", dname, name);
 127
 128         talloc_free(dname);
 129
 130         return fname;
 131 }
 132
 133 /**
 134  A useful function for returning a path in the Samba cache directory.
 135 **/
 136 char *lpcfg_cache_path(TALLOC_CTX* mem_ctx, struct loadparm_context *lp_ctx,
 137                        const char *name)
 138 {
 139         char *fname, *dname;
 140         if (name == NULL) {
 141                 return NULL;
 142         }
 143         if (name[0] == 0 || name[0] == '/' || strstr(name, ":/")) {
 144                 return talloc_strdup(mem_ctx, name);
 145         }
 146
 147         dname = talloc_strdup(mem_ctx, lpcfg_cachedir(lp_ctx));
 148         trim_string(dname,"","/");
 149
 150         if (!directory_exist(dname)) {
 151                 mkdir(dname,0755);
 152         }
 153
 154         fname = talloc_asprintf(mem_ctx, "%s/%s", dname, name);
 155
 156         talloc_free(dname);
 157
 158         return fname;
 159 }
 160
 161 /**
 162  * @brief Returns an absolute path to a file in the directory containing the current config file
 163  *
 164  * @param name File to find, relative to the config file directory.
 165  *
 166  * @retval Pointer to a talloc'ed string containing the full path.
 167  **/
 168
 169 char *lpcfg_config_path(TALLOC_CTX* mem_ctx, struct loadparm_context *lp_ctx,
 170                            const char *name)
 171 {
 172         char *fname, *config_dir, *p;
 173         config_dir = talloc_strdup(mem_ctx, lpcfg_configfile(lp_ctx));
 174         if (config_dir == NULL) {
 175                 config_dir = talloc_strdup(mem_ctx, lp_default_path());
 176         }
 177         p = strrchr(config_dir, '/');
 178         if (p == NULL) {
 179                 talloc_free(config_dir);
 180                 config_dir = talloc_strdup(mem_ctx, ".");
 181                 if (config_dir == NULL) {
 182                         return NULL;
 183                 }
 184         } else {
 185                 p[0] = '\0';
 186         }
 187         fname = talloc_asprintf(mem_ctx, "%s/%s", config_dir, name);
 188         talloc_free(config_dir);
 189         return fname;
 190 }
 191
 192 /**
 193  * @brief Returns an absolute path to a file in the Samba private directory.
 194  *
 195  * @param name File to find, relative to PRIVATEDIR.
 196  * if name is not relative, then use it as-is
 197  *
 198  * @retval Pointer to a talloc'ed string containing the full path.
 199  **/
 200 char *lpcfg_private_path(TALLOC_CTX* mem_ctx,
 201                             struct loadparm_context *lp_ctx,
 202                             const char *name)
 203 {
 204         char *fname;
 205         if (name == NULL) {
 206                 return NULL;
 207         }
 208         if (name[0] == 0 || name[0] == '/' || strstr(name, ":/")) {
 209                 return talloc_strdup(mem_ctx, name);
 210         }
 211         fname = talloc_asprintf(mem_ctx, "%s/%s", lpcfg_private_dir(lp_ctx), name);
 212         return fname;
 213 }
 214
 215 /**
 216   return a path in the smbd.tmp directory, where all temporary file
 217   for smbd go. If NULL is passed for name then return the directory
 218   path itself
 219 */
 220 char *smbd_tmp_path(TALLOC_CTX *mem_ctx,
 221                              struct loadparm_context *lp_ctx,
 222                              const char *name)
 223 {
 224         char *fname, *dname;
 225
 226         dname = lpcfg_private_path(mem_ctx, lp_ctx, "smbd.tmp");
 227         if (!directory_exist(dname)) {
 228                 mkdir(dname,0755);
 229         }
 230
 231         if (name == NULL) {
 232                 return dname;
 233         }
 234
 235         fname = talloc_asprintf(mem_ctx, "%s/%s", dname, name);
 236         talloc_free(dname);
 237
 238         return fname;
 239 }
 240
 241 const char *lpcfg_imessaging_path(TALLOC_CTX *mem_ctx,
 242                                        struct loadparm_context *lp_ctx)
 243 {
 244         return smbd_tmp_path(mem_ctx, lp_ctx, "msg");
 245 }
 246
 247 struct smb_iconv_handle *smb_iconv_handle_reinit_lp(TALLOC_CTX *mem_ctx,
 248                                                               struct loadparm_context *lp_ctx,
 249                                                               struct smb_iconv_handle *old_ic)
 250 {
 251         return smb_iconv_handle_reinit(mem_ctx, lpcfg_dos_charset(lp_ctx),
 252                                        lpcfg_unix_charset(lp_ctx),
 253                                        true,
 254                                        old_ic);
 255 }
 256
 257
 258 const char *lpcfg_sam_name(struct loadparm_context *lp_ctx)
 259 {
 260         switch (lpcfg_server_role(lp_ctx)) {
 261         case ROLE_DOMAIN_BDC:
 262         case ROLE_DOMAIN_PDC:
 263                 return lpcfg_workgroup(lp_ctx);
 264         default:
 265                 return lpcfg_netbios_name(lp_ctx);
 266         }
 267 }
 268