pith/osdep/creatdir.c

   1 /*
   2  * ========================================================================
   3  * Copyright 2006-2007 University of Washington
   4  * Copyright 2013-2022 Eduardo Chappa
   5  *
   6  * Licensed under the Apache License, Version 2.0 (the "License");
   7  * you may not use this file except in compliance with the License.
   8  * You may obtain a copy of the License at
   9  *
  10  *     http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * ========================================================================
  13  */
  14
  15 #include <system.h>
  16 #include "../charconv/utf8.h"
  17 #include "../charconv/filesys.h"
  18 #include "creatdir.h"
  19
  20
  21 #ifdef  S_IRWXU
  22 #define MAILDIR_MODE    S_IRWXU
  23 #else
  24 #define MAILDIR_MODE    0700
  25 #endif
  26
  27
  28
  29 /*----------------------------------------------------------------------
  30       Create the mail subdirectory.
  31
  32   Args: dir -- Name of the directory to create
  33
  34  Result: Directory is created.  Returns 0 on success, else -1 on error
  35          and errno is valid.
  36   ----*/
  37 int
  38 create_mail_dir(char *dir)
  39 {
  40     if(our_mkdir(dir, MAILDIR_MODE) < 0)
  41       return(-1);
  42
  43 #ifndef _WINDOWS
  44     our_chmod(dir, MAILDIR_MODE);
  45
  46     /* Some systems need this, on others we don't care if it fails */
  47     our_chown(dir, getuid(), getgid());
  48 #endif /* !_WINDOWS */
  49
  50     return(0);
  51 }
  52
  53
  54 /*----------------------------------------------------------------------
  55       Create random directory
  56
  57   Args: dir -- Name of the directory that contains the random directory
  58         len -- size of dir.
  59
  60  Result: Directory is created.  Returns 0 on success, else -1 on error
  61          and errno is valid.
  62   ----*/
  63 int
  64 create_random_dir(char *dir, size_t len)
  65 {
  66     size_t olen, dlen = strlen(dir);
  67
  68     olen = dlen;        /* save original length */
  69
  70     if(dir[dlen-1] != C_FILESEP){
  71          dir[dlen++] = C_FILESEP;
  72          dir[dlen] = '\0';
  73     }
  74
  75     if(dlen + 6 < len)
  76         strcat(dir, "XXXXXX");
  77     else{
  78         dir[olen] = '\0';
  79         return -1;
  80     }
  81
  82 #ifndef _WINDOWS
  83     dir = mkdtemp(dir);
  84     our_chmod(dir, MAILDIR_MODE);
  85
  86     /* Some systems need this, on others we don't care if it fails */
  87     our_chown(dir, getuid(), getgid());
  88 #else
  89     {   int i;
  90         char *s = &dir[strlen(dir) - 6];
  91         for(i = 0; i < 10; i++){
  92            sprintf(s, "%02x%02x%02x", (unsigned int)(random() % 256), (unsigned int)(random() % 256),
  93                              (unsigned int)(random() % 256));
  94            if(our_mkdir(dir, 0700) == 0) return dir;
  95         }
  96         *dir = '\0';    /* if we are here, we failed! */
  97      }
  98 #endif /* !_WINDOWS */
  99
 100     return(0);
 101 }