xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame^] | 1 | /* Copyright (C) 1999-2016 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. |
| 3 | |
| 4 | The GNU C Library is free software; you can redistribute it and/or |
| 5 | modify it under the terms of the GNU Lesser General Public |
| 6 | License as published by the Free Software Foundation; either |
| 7 | version 2.1 of the License, or (at your option) any later version. |
| 8 | |
| 9 | The GNU C Library is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | Lesser General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU Lesser General Public |
| 15 | License along with the GNU C Library; if not, see |
| 16 | <http://www.gnu.org/licenses/>. */ |
| 17 | |
| 18 | #include <stdio.h> |
| 19 | #include <pwd.h> |
| 20 | #include <errno.h> |
| 21 | #include <stdbool.h> |
| 22 | |
| 23 | /* We want to test getpw by calling it with a uid that does |
| 24 | exist and one that doesn't exist. We track if we've met those |
| 25 | conditions and exit. We also track if we've failed due to lack |
| 26 | of memory. That constitutes all of the standard failure cases. */ |
| 27 | bool seen_hit; |
| 28 | bool seen_miss; |
| 29 | bool seen_oom; |
| 30 | |
| 31 | /* How many errors we've had while running the test. */ |
| 32 | int errors; |
| 33 | |
| 34 | static void |
| 35 | check (uid_t uid) |
| 36 | { |
| 37 | int ret; |
| 38 | char buf[1024]; |
| 39 | |
| 40 | ret = getpw (uid, buf); |
| 41 | |
| 42 | /* Successfully read a password line. */ |
| 43 | if (ret == 0 && !seen_hit) |
| 44 | { |
| 45 | printf ("PASS: Read a password line given a uid.\n"); |
| 46 | seen_hit = true; |
| 47 | } |
| 48 | |
| 49 | /* Failed to read a password line. Why? */ |
| 50 | if (ret == -1) |
| 51 | { |
| 52 | /* No entry? Technically the errno could be any number |
| 53 | of values including ESRCH, EBADP or EPERM depending |
| 54 | on the quality of the nss module that implements the |
| 55 | underlying lookup. It should be 0 for getpw.*/ |
| 56 | if (errno == 0 && !seen_miss) |
| 57 | { |
| 58 | printf ("PASS: Found an invalid uid.\n"); |
| 59 | seen_miss = true; |
| 60 | return; |
| 61 | } |
| 62 | |
| 63 | /* Out of memory? */ |
| 64 | if (errno == ENOMEM && !seen_oom) |
| 65 | { |
| 66 | printf ("FAIL: Failed with ENOMEM.\n"); |
| 67 | seen_oom = true; |
| 68 | errors++; |
| 69 | } |
| 70 | |
| 71 | /* We don't expect any other values for errno. */ |
| 72 | if (errno != ENOMEM && errno != 0) |
| 73 | errors++; |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | static int |
| 78 | do_test (void) |
| 79 | { |
| 80 | int ret; |
| 81 | uid_t uid; |
| 82 | |
| 83 | /* Should return -1 and set errnot to EINVAL. */ |
| 84 | ret = getpw (0, NULL); |
| 85 | if (ret == -1 && errno == EINVAL) |
| 86 | { |
| 87 | printf ("PASS: NULL buffer returns -1 and sets errno to EINVAL.\n"); |
| 88 | } |
| 89 | else |
| 90 | { |
| 91 | printf ("FAIL: NULL buffer did not return -1 or set errno to EINVAL.\n"); |
| 92 | errors++; |
| 93 | } |
| 94 | |
| 95 | /* Look for one matching uid, one non-found uid and then stop. |
| 96 | Set an upper limit at the 16-bit UID mark; no need to go farther. */ |
| 97 | for (uid = 0; uid < ((uid_t) 65535); ++uid) |
| 98 | { |
| 99 | check (uid); |
| 100 | if (seen_miss && seen_hit) |
| 101 | break; |
| 102 | } |
| 103 | |
| 104 | if (!seen_hit) |
| 105 | printf ("FAIL: Did not read even one password line given a uid.\n"); |
| 106 | |
| 107 | if (!seen_miss) |
| 108 | printf ("FAIL: Did not find even one invalid uid.\n"); |
| 109 | |
| 110 | return errors; |
| 111 | } |
| 112 | |
| 113 | #define TEST_FUNCTION do_test () |
| 114 | #include "../test-skeleton.c" |