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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libc/gen/getusershell.c	Lines:	0	43	0.0 %
Date:	2017-11-07	Branches:	0	27	0.0 %


/*	$OpenBSD: getusershell.c,v 1.17 2015/12/08 16:28:26 tedu Exp $ */
/*
 * Copyright (c) 1985, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <ctype.h>
#include <limits.h>
#include <paths.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

/*
 * Local shells should NOT be added here.  They should be added in
 * /etc/shells.
 */

static char *okshells[] = { _PATH_BSHELL, _PATH_CSHELL, _PATH_KSHELL, NULL };
static char **curshell, **shells;
static char **initshells(void);

/*
 * Get a list of shells from _PATH_SHELLS, if it exists.
 */
char *
getusershell(void)
{
	char *ret;

	if (curshell == NULL)
		curshell = initshells();
	ret = *curshell;
	if (ret != NULL)
		curshell++;
	return (ret);
}

void
endusershell(void)
{
	char **s;

	if ((s = shells))
		while (*s)
			free(*s++);
	free(shells);
	shells = NULL;

	curshell = NULL;
}

void
setusershell(void)
{

	curshell = initshells();
}

static char **
initshells(void)
{
	size_t nshells, nalloc, linesize;
	char *line;
	FILE *fp;

	free(shells);
	shells = NULL;

	if ((fp = fopen(_PATH_SHELLS, "re")) == NULL)
		return (okshells);

	line = NULL;
	nalloc = 10; // just an initial guess
	nshells = 0;
	shells = reallocarray(NULL, nalloc, sizeof (char *));
	if (shells == NULL)
		goto fail;
	linesize = 0;
	while (getline(&line, &linesize, fp) != -1) {
		if (*line != '/')
			continue;
		line[strcspn(line, "#\n")] = '\0';
		if (!(shells[nshells] = strdup(line)))
			goto fail;

		if (nshells + 1 == nalloc) {
			char **new = reallocarray(shells, nalloc * 2, sizeof(char *));
			if (!new)
				goto fail;
			shells = new;
			nalloc *= 2;
		}
		nshells++;
	}
	free(line);
	shells[nshells] = NULL;
	(void)fclose(fp);
	return (shells);

fail:
	free(line);
	while (nshells)
		free(shells[nshells--]);
	free(shells);
	shells = NULL;
	(void)fclose(fp);
	return (okshells);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: getusershell.c,v 1.17 2015/12/08 16:28:26 tedu Exp $ */
2			/*
3			* Copyright (c) 1985, 1993
4			* The Regents of the University of California. All rights reserved.
5			*
6			* Redistribution and use in source and binary forms, with or without
7			* modification, are permitted provided that the following conditions
8			* are met:
9			* 1. Redistributions of source code must retain the above copyright
10			* notice, this list of conditions and the following disclaimer.
11			* 2. Redistributions in binary form must reproduce the above copyright
12			* notice, this list of conditions and the following disclaimer in the
13			* documentation and/or other materials provided with the distribution.
14			* 3. Neither the name of the University nor the names of its contributors
15			* may be used to endorse or promote products derived from this software
16			* without specific prior written permission.
17			*
18			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
19			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28			* SUCH DAMAGE.
29			*/
30
31			#include <ctype.h>
32			#include <limits.h>
33			#include <paths.h>
34			#include <stdint.h>
35			#include <stdio.h>
36			#include <stdlib.h>
37			#include <string.h>
38			#include <unistd.h>
39
40			/*
41			* Local shells should NOT be added here. They should be added in
42			* /etc/shells.
43			*/
44
45			static char *okshells[] = { _PATH_BSHELL, _PATH_CSHELL, _PATH_KSHELL, NULL };
46			static char curshell, shells;
47			static char **initshells(void);
48
49			/*
50			* Get a list of shells from _PATH_SHELLS, if it exists.
51			*/
52			char *
53			getusershell(void)
54			{
55			char *ret;
56
57			if (curshell == NULL)
58			curshell = initshells();
59			ret = *curshell;
60			if (ret != NULL)
61			curshell++;
62			return (ret);
63			}
64
65			void
66			endusershell(void)
67			{
68			char **s;
69
70			if ((s = shells))
71			while (*s)
72			free(*s++);
73			free(shells);
74			shells = NULL;
75
76			curshell = NULL;
77			}
78
79			void
80			setusershell(void)
81			{
82
83			curshell = initshells();
84			}
85
86			static char **
87			initshells(void)
88			{
89			size_t nshells, nalloc, linesize;
90			char *line;
91			FILE *fp;
92
93			free(shells);
94			shells = NULL;
95
96			if ((fp = fopen(_PATH_SHELLS, "re")) == NULL)
97			return (okshells);
98
99			line = NULL;
100			nalloc = 10; // just an initial guess
101			nshells = 0;
102			shells = reallocarray(NULL, nalloc, sizeof (char *));
103			if (shells == NULL)
104			goto fail;
105			linesize = 0;
106			while (getline(&line, &linesize, fp) != -1) {
107			if (*line != '/')
108			continue;
109			line[strcspn(line, "#\n")] = '\0';
110			if (!(shells[nshells] = strdup(line)))
111			goto fail;
112
113			if (nshells + 1 == nalloc) {
114			char *new = reallocarray(shells, nalloc 2, sizeof(char *));
115			if (!new)
116			goto fail;
117			shells = new;
118			nalloc *= 2;
119			}
120			nshells++;
121			}
122			free(line);
123			shells[nshells] = NULL;
124			(void)fclose(fp);
125			return (shells);
126
127			fail:
128			free(line);
129			while (nshells)
130			free(shells[nshells--]);
131			free(shells);
132			shells = NULL;
133			(void)fclose(fp);
134			return (okshells);
135			}