| 1 | /* Copyright (C) 1991-2022 Free Software Foundation, Inc. |
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| 2 | This file is part of the GNU C Library. |
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| 3 | |
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| 4 | The GNU C Library is free software; you can redistribute it and/or |
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| 5 | modify it under the terms of the GNU Lesser General Public |
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| 6 | License as published by the Free Software Foundation; either |
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| 7 | version 2.1 of the License, or (at your option) any later version. |
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| 8 | |
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| 9 | The GNU C Library is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | Lesser General Public License for more details. |
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| 13 | |
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| 14 | You should have received a copy of the GNU Lesser General Public |
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| 15 | License along with the GNU C Library; if not, see |
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| 16 | <https://www.gnu.org/licenses/>. */ |
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| 17 | |
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| 18 | #include <ctype.h> |
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| 19 | #include <errno.h> |
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| 20 | #include <grp.h> |
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| 21 | #include <stdio.h> |
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| 22 | |
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| 23 | /* Define a line parsing function using the common code |
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| 24 | used in the nss_files module. */ |
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| 25 | |
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| 26 | #define STRUCTURE group |
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| 27 | #define ENTNAME grent |
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| 28 | struct grent_data {}; |
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| 29 | |
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| 30 | #define TRAILING_LIST_MEMBER gr_mem |
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| 31 | #define TRAILING_LIST_SEPARATOR_P(c) ((c) == ',') |
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| 32 | #include <nss/nss_files/files-parse.c> |
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| 33 | LINE_PARSER |
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| 34 | (, |
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| 35 | STRING_FIELD (result->gr_name, ISCOLON, 0); |
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| 36 | if (line[0] == '\0' |
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| 37 | && (result->gr_name[0] == '+' || result->gr_name[0] == '-')) |
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| 38 | { |
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| 39 | result->gr_passwd = NULL; |
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| 40 | result->gr_gid = 0; |
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| 41 | } |
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| 42 | else |
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| 43 | { |
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| 44 | STRING_FIELD (result->gr_passwd, ISCOLON, 0); |
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| 45 | if (result->gr_name[0] == '+' || result->gr_name[0] == '-') |
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| 46 | INT_FIELD_MAYBE_NULL (result->gr_gid, ISCOLON, 0, 10, , 0) |
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| 47 | else |
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| 48 | INT_FIELD (result->gr_gid, ISCOLON, 0, 10,) |
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| 49 | } |
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| 50 | ) |
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| 51 | |
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| 52 | |
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| 53 | /* Read one entry from the given stream. */ |
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| 54 | int |
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| 55 | __fgetgrent_r (FILE *stream, struct group *resbuf, char *buffer, size_t buflen, |
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| 56 | struct group **result) |
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| 57 | { |
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| 58 | int ret = __nss_fgetent_r (fp: stream, result: resbuf, buffer, buffer_length: buflen, parse_line); |
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| 59 | if (ret == 0) |
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| 60 | *result = resbuf; |
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| 61 | else |
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| 62 | *result = NULL; |
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| 63 | return ret; |
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| 64 | } |
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| 65 | weak_alias (__fgetgrent_r, fgetgrent_r) |
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| 66 | |
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