1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * password utility routines.
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4 | *
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5 | * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
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6 | * Copyright (C) 2008 by Tito Ragusa <farmatito@tiscali.it>
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7 | *
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8 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
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9 | */
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10 |
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11 | #include "libbb.h"
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12 |
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13 | /* TODO: maybe change API to return malloced data?
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14 | * This will allow to stop using libc functions returning
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15 | * pointers to static data (getpwuid)
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16 | */
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17 |
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18 | struct passwd* FAST_FUNC xgetpwnam(const char *name)
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19 | {
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20 | struct passwd *pw = getpwnam(name);
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21 | if (!pw)
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22 | bb_error_msg_and_die("unknown user %s", name);
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23 | return pw;
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24 | }
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25 |
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26 | struct group* FAST_FUNC xgetgrnam(const char *name)
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27 | {
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28 | struct group *gr = getgrnam(name);
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29 | if (!gr)
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30 | bb_error_msg_and_die("unknown group %s", name);
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31 | return gr;
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32 | }
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33 |
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34 |
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35 | struct passwd* FAST_FUNC xgetpwuid(uid_t uid)
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36 | {
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37 | struct passwd *pw = getpwuid(uid);
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38 | if (!pw)
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39 | bb_error_msg_and_die("unknown uid %u", (unsigned)uid);
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40 | return pw;
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41 | }
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42 |
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43 | struct group* FAST_FUNC xgetgrgid(gid_t gid)
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44 | {
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45 | struct group *gr = getgrgid(gid);
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46 | if (!gr)
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47 | bb_error_msg_and_die("unknown gid %u", (unsigned)gid);
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48 | return gr;
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49 | }
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50 |
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51 | char* FAST_FUNC xuid2uname(uid_t uid)
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52 | {
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53 | struct passwd *pw = xgetpwuid(uid);
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54 | return pw->pw_name;
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55 | }
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56 |
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57 | char* FAST_FUNC xgid2group(gid_t gid)
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58 | {
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59 | struct group *gr = xgetgrgid(gid);
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60 | return gr->gr_name;
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61 | }
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62 |
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63 | char* FAST_FUNC uid2uname(uid_t uid)
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64 | {
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65 | struct passwd *pw = getpwuid(uid);
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66 | return (pw) ? pw->pw_name : NULL;
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67 | }
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68 |
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69 | char* FAST_FUNC gid2group(gid_t gid)
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70 | {
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71 | struct group *gr = getgrgid(gid);
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72 | return (gr) ? gr->gr_name : NULL;
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73 | }
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74 |
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75 | char* FAST_FUNC uid2uname_utoa(long uid)
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76 | {
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77 | char *name = uid2uname(uid);
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78 | return (name) ? name : utoa(uid);
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79 | }
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80 |
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81 | char* FAST_FUNC gid2group_utoa(long gid)
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82 | {
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83 | char *name = gid2group(gid);
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84 | return (name) ? name : utoa(gid);
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85 | }
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86 |
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87 | long FAST_FUNC xuname2uid(const char *name)
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88 | {
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89 | struct passwd *myuser;
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90 |
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91 | myuser = xgetpwnam(name);
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92 | return myuser->pw_uid;
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93 | }
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94 |
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95 | long FAST_FUNC xgroup2gid(const char *name)
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96 | {
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97 | struct group *mygroup;
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98 |
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99 | mygroup = xgetgrnam(name);
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100 | return mygroup->gr_gid;
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101 | }
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102 |
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103 | unsigned long FAST_FUNC get_ug_id(const char *s,
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104 | long FAST_FUNC (*xname2id)(const char *))
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105 | {
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106 | unsigned long r;
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107 |
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108 | r = bb_strtoul(s, NULL, 10);
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109 | if (errno)
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110 | return xname2id(s);
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111 | return r;
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112 | }
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