Adding upstream version 1:4.13+dfsg1.upstream/1%4.13+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 187 insertions, 0 deletions

diff --git a/lib/sgetspent.c b/lib/sgetspent.c
new file mode 100644
index 0000000..f1d4b20
--- /dev/null
+++ b/lib/sgetspent.c
@@ -0,0 +1,187 @@
+/*
+ * SPDX-FileCopyrightText: 1989 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 1998, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2003 - 2005, Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2009       , Nicolas François
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <config.h>
+
+/* Newer versions of Linux libc already have shadow support.  */
+#ifndef HAVE_SGETSPENT
+
+#ident "$Id$"
+
+#include <sys/types.h>
+#include "prototypes.h"
+#include "shadowlog_internal.h"
+#include "defines.h"
+#include <stdio.h>
+#define	FIELDS	9
+#define	OFIELDS	5
+/*
+ * sgetspent - convert string in shadow file format to (struct spwd *)
+ */
+struct spwd *sgetspent (const char *string)
+{
+	static char spwbuf[PASSWD_ENTRY_MAX_LENGTH];
+	static struct spwd spwd;
+	char *fields[FIELDS];
+	char *cp;
+	int i;
+
+	/*
+	 * Copy string to local buffer.  It has to be tokenized and we
+	 * have to do that to our private copy.
+	 */
+
+	if (strlen (string) >= sizeof spwbuf) {
+		fprintf (shadow_logfd,
+		         "%s: Too long passwd entry encountered, file corruption?\n",
+		         shadow_progname);
+		return 0;	/* fail if too long */
+	}
+	strcpy (spwbuf, string);
+
+	cp = strrchr (spwbuf, '\n');
+	if (NULL != cp) {
+		*cp = '\0';
+	}
+
+	/*
+	 * Tokenize the string into colon separated fields.  Allow up to
+	 * FIELDS different fields.
+	 */
+
+	for (cp = spwbuf, i = 0; ('\0' != *cp) && (i < FIELDS); i++) {
+		fields[i] = cp;
+		while (('\0' != *cp) && (':' != *cp)) {
+			cp++;
+		}
+
+		if ('\0' != *cp) {
+			*cp = '\0';
+			cp++;
+		}
+	}
+
+	if (i == (FIELDS - 1)) {
+		fields[i++] = cp;
+	}
+
+	if ( ((NULL != cp) && ('\0' != *cp)) ||
+	     ((i != FIELDS) && (i != OFIELDS)) ) {
+		return 0;
+	}
+
+	/*
+	 * Start populating the structure.  The fields are all in
+	 * static storage, as is the structure we pass back.
+	 */
+
+	spwd.sp_namp = fields[0];
+	spwd.sp_pwdp = fields[1];
+
+	/*
+	 * Get the last changed date.  For all of the integer fields,
+	 * we check for proper format.  It is an error to have an
+	 * incorrectly formatted number.
+	 */
+
+	if (fields[2][0] == '\0') {
+		spwd.sp_lstchg = -1;
+	} else if (   (getlong (fields[2], &spwd.sp_lstchg) == 0)
+	           || (spwd.sp_lstchg < 0)) {
+		return 0;
+	}
+
+	/*
+	 * Get the minimum period between password changes.
+	 */
+
+	if (fields[3][0] == '\0') {
+		spwd.sp_min = -1;
+	} else if (   (getlong (fields[3], &spwd.sp_min) == 0)
+	           || (spwd.sp_min < 0)) {
+		return 0;
+	}
+
+	/*
+	 * Get the maximum number of days a password is valid.
+	 */
+
+	if (fields[4][0] == '\0') {
+		spwd.sp_max = -1;
+	} else if (   (getlong (fields[4], &spwd.sp_max) == 0)
+	           || (spwd.sp_max < 0)) {
+		return 0;
+	}
+
+	/*
+	 * If there are only OFIELDS fields (this is a SVR3.2 /etc/shadow
+	 * formatted file), initialize the other field members to -1.
+	 */
+
+	if (i == OFIELDS) {
+		spwd.sp_warn   = -1;
+		spwd.sp_inact  = -1;
+		spwd.sp_expire = -1;
+		spwd.sp_flag   = SHADOW_SP_FLAG_UNSET;
+
+		return &spwd;
+	}
+
+	/*
+	 * Get the number of days of password expiry warning.
+	 */
+
+	if (fields[5][0] == '\0') {
+		spwd.sp_warn = -1;
+	} else if (   (getlong (fields[5], &spwd.sp_warn) == 0)
+	           || (spwd.sp_warn < 0)) {
+		return 0;
+	}
+
+	/*
+	 * Get the number of days of inactivity before an account is
+	 * disabled.
+	 */
+
+	if (fields[6][0] == '\0') {
+		spwd.sp_inact = -1;
+	} else if (   (getlong (fields[6], &spwd.sp_inact) == 0)
+	           || (spwd.sp_inact < 0)) {
+		return 0;
+	}
+
+	/*
+	 * Get the number of days after the epoch before the account is
+	 * set to expire.
+	 */
+
+	if (fields[7][0] == '\0') {
+		spwd.sp_expire = -1;
+	} else if (   (getlong (fields[7], &spwd.sp_expire) == 0)
+	           || (spwd.sp_expire < 0)) {
+		return 0;
+	}
+
+	/*
+	 * This field is reserved for future use.  But it isn't supposed
+	 * to have anything other than a valid integer in it.
+	 */
+
+	if (fields[8][0] == '\0') {
+		spwd.sp_flag = SHADOW_SP_FLAG_UNSET;
+	} else if (getulong (fields[8], &spwd.sp_flag) == 0) {
+		return 0;
+	}
+
+	return (&spwd);
+}
+#else
+extern int errno;		/* warning: ANSI C forbids an empty source file */
+#endif
+