1 | /***************************************************************************
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2 | * _ _ ____ _
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3 | * Project ___| | | | _ \| |
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4 | * / __| | | | |_) | |
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5 | * | (__| |_| | _ <| |___
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6 | * \___|\___/|_| \_\_____|
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7 | *
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8 | * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al.
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9 | *
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10 | * This software is licensed as described in the file COPYING, which
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11 | * you should have received as part of this distribution. The terms
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12 | * are also available at https://curl.haxx.se/docs/copyright.html.
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13 | *
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14 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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15 | * copies of the Software, and permit persons to whom the Software is
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16 | * furnished to do so, under the terms of the COPYING file.
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17 | *
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18 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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19 | * KIND, either express or implied.
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20 | *
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21 | ***************************************************************************/
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22 | #include "tool_setup.h"
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23 |
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24 | #ifdef HAVE_PWD_H
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25 | # include <pwd.h>
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26 | #endif
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27 |
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28 | #include "tool_homedir.h"
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29 |
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30 | #include "memdebug.h" /* keep this as LAST include */
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31 |
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32 | static char *GetEnv(const char *variable, char do_expand)
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33 | {
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34 | char *env = NULL;
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35 | #ifdef WIN32
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36 | char buf1[1024], buf2[1024];
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37 | DWORD rc;
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38 |
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39 | /* Don't use getenv(); it doesn't find variable added after program was
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40 | * started. Don't accept truncated results (i.e. rc >= sizeof(buf1)). */
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41 |
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42 | rc = GetEnvironmentVariableA(variable, buf1, sizeof(buf1));
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43 | if(rc > 0 && rc < sizeof(buf1)) {
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44 | env = buf1;
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45 | variable = buf1;
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46 | }
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47 | if(do_expand && strchr(variable, '%')) {
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48 | /* buf2 == variable if not expanded */
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49 | rc = ExpandEnvironmentStringsA(variable, buf2, sizeof(buf2));
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50 | if(rc > 0 && rc < sizeof(buf2) &&
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51 | !strchr(buf2, '%')) /* no vars still unexpanded */
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52 | env = buf2;
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53 | }
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54 | #else
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55 | (void)do_expand;
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56 | /* no length control */
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57 | env = getenv(variable);
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58 | #endif
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59 | return (env && env[0]) ? strdup(env) : NULL;
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60 | }
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61 |
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62 | /* return the home directory of the current user as an allocated string */
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63 | char *homedir(void)
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64 | {
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65 | char *home;
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66 |
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67 | home = GetEnv("CURL_HOME", FALSE);
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68 | if(home)
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69 | return home;
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70 |
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71 | home = GetEnv("HOME", FALSE);
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72 | if(home)
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73 | return home;
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74 |
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75 | #if defined(HAVE_GETPWUID) && defined(HAVE_GETEUID)
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76 | {
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77 | struct passwd *pw = getpwuid(geteuid());
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78 |
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79 | if(pw) {
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80 | home = pw->pw_dir;
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81 | if(home && home[0])
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82 | home = strdup(home);
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83 | else
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84 | home = NULL;
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85 | }
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86 | }
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87 | #endif /* PWD-stuff */
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88 | #ifdef WIN32
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89 | home = GetEnv("APPDATA", TRUE);
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90 | if(!home)
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91 | home = GetEnv("%USERPROFILE%\\Application Data", TRUE); /* Normally only
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92 | on Win-2K/XP */
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93 | #endif /* WIN32 */
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94 | return home;
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95 | }
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