2 * Copyright (c) 2003 Networks Associates Technology, Inc.
3 * Copyright (c) 2004-2011 Dag-Erling Smørgrav
6 * This software was developed for the FreeBSD Project by ThinkSec AS and
7 * Network Associates Laboratories, the Security Research Division of
8 * Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
9 * ("CBOSS"), as part of the DARPA CHATS research program.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. The name of the author may not be used to endorse or promote
20 * products derived from this software without specific prior written
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * $OpenPAM: openpam_readline.c 938 2017-04-30 21:34:42Z des $
45 #include <security/pam_appl.h>
47 #include "openpam_impl.h"
49 #define MIN_LINE_LENGTH 128
54 * Read a line from a file.
58 openpam_readline(FILE *f, int *lineno, size_t *lenp)
65 if (openpam_straddch(&line, &size, &len, 0) != 0)
73 } while (ch != EOF && ch != '\n');
84 /* skip blank lines */
88 if (line[len - 1] == '\\') {
96 if (openpam_straddch(&line, &size, &len, ch) != 0)
110 * DEPRECATED openpam_readlinev
112 * The =openpam_readline function reads a line from a file, and returns it
113 * in a NUL-terminated buffer allocated with =!malloc.
115 * The =openpam_readline function performs a certain amount of processing
116 * on the data it reads:
118 * - Comments (introduced by a hash sign) are stripped.
120 * - Blank lines are ignored.
122 * - If a line ends in a backslash, the backslash is stripped and the
123 * next line is appended.
125 * If =lineno is not =NULL, the integer variable it points to is
126 * incremented every time a newline character is read.
128 * If =lenp is not =NULL, the length of the line (not including the
129 * terminating NUL character) is stored in the variable it points to.
131 * The caller is responsible for releasing the returned buffer by passing