1 | /* Copyright (C) 2009-2020 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 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <ctype.h> |
19 | #include <errno.h> |
20 | #include <gshadow.h> |
21 | #include <stdio.h> |
22 | |
23 | /* Define a line parsing function using the common code |
24 | used in the nss_files module. */ |
25 | |
26 | #define STRUCTURE sgrp |
27 | #define ENTNAME sgent |
28 | #define EXTERN_PARSER 1 |
29 | struct sgent_data {}; |
30 | |
31 | #include <nss/nss_files/files-parse.c> |
32 | |
33 | |
34 | /* Read one shadow entry from the given stream. */ |
35 | int |
36 | __fgetsgent_r (FILE *stream, struct sgrp *resbuf, char *buffer, size_t buflen, |
37 | struct sgrp **result) |
38 | { |
39 | char *p; |
40 | |
41 | _IO_flockfile (stream); |
42 | do |
43 | { |
44 | buffer[buflen - 1] = '\xff'; |
45 | p = fgets_unlocked (buffer, buflen, stream); |
46 | if (p == NULL && feof_unlocked (stream)) |
47 | { |
48 | _IO_funlockfile (stream); |
49 | *result = NULL; |
50 | __set_errno (ENOENT); |
51 | return errno; |
52 | } |
53 | if (p == NULL || buffer[buflen - 1] != '\xff') |
54 | { |
55 | _IO_funlockfile (stream); |
56 | *result = NULL; |
57 | __set_errno (ERANGE); |
58 | return errno; |
59 | } |
60 | |
61 | /* Skip leading blanks. */ |
62 | while (isspace (*p)) |
63 | ++p; |
64 | } while (*p == '\0' || *p == '#' /* Ignore empty and comment lines. */ |
65 | /* Parse the line. If it is invalid, loop to |
66 | get the next line of the file to parse. */ |
67 | || ! parse_line (buffer, (void *) resbuf, (void *) buffer, buflen, |
68 | &errno)); |
69 | |
70 | _IO_funlockfile (stream); |
71 | |
72 | *result = resbuf; |
73 | return 0; |
74 | } |
75 | weak_alias (__fgetsgent_r, fgetsgent_r) |
76 | |