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-rw-r--r--lib/sgroupio.c328
1 files changed, 328 insertions, 0 deletions
diff --git a/lib/sgroupio.c b/lib/sgroupio.c
new file mode 100644
index 0000000..5423626
--- /dev/null
+++ b/lib/sgroupio.c
@@ -0,0 +1,328 @@
+/*
+ * Copyright (c) 1990 - 1994, Julianne Frances Haugh
+ * Copyright (c) 1996 - 2000, Marek Michałkiewicz
+ * Copyright (c) 2001 , Michał Moskal
+ * Copyright (c) 2005 , Tomasz Kłoczko
+ * Copyright (c) 2007 - 2013, Nicolas François
+ * 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. The name of the copyright holders or contributors may not be used to
+ * endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
+ * HOLDERS 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 <config.h>
+
+#ifdef SHADOWGRP
+
+#ident "$Id$"
+
+#include "prototypes.h"
+#include "defines.h"
+#include "commonio.h"
+#include "getdef.h"
+#include "sgroupio.h"
+
+/*@null@*/ /*@only@*/struct sgrp *__sgr_dup (const struct sgrp *sgent)
+{
+ struct sgrp *sg;
+ int i;
+
+ sg = (struct sgrp *) malloc (sizeof *sg);
+ if (NULL == sg) {
+ return NULL;
+ }
+ /* Do the same as the other _dup function, even if we know the
+ * structure. */
+ memset (sg, 0, sizeof *sg);
+ /*@-mustfreeonly@*/
+ sg->sg_name = strdup (sgent->sg_name);
+ /*@=mustfreeonly@*/
+ if (NULL == sg->sg_name) {
+ free (sg);
+ return NULL;
+ }
+ /*@-mustfreeonly@*/
+ sg->sg_passwd = strdup (sgent->sg_passwd);
+ /*@=mustfreeonly@*/
+ if (NULL == sg->sg_passwd) {
+ free (sg->sg_name);
+ free (sg);
+ return NULL;
+ }
+
+ for (i = 0; NULL != sgent->sg_adm[i]; i++);
+ /*@-mustfreeonly@*/
+ sg->sg_adm = (char **) malloc ((i + 1) * sizeof (char *));
+ /*@=mustfreeonly@*/
+ if (NULL == sg->sg_adm) {
+ free (sg->sg_passwd);
+ free (sg->sg_name);
+ free (sg);
+ return NULL;
+ }
+ for (i = 0; NULL != sgent->sg_adm[i]; i++) {
+ sg->sg_adm[i] = strdup (sgent->sg_adm[i]);
+ if (NULL == sg->sg_adm[i]) {
+ for (i = 0; NULL != sg->sg_adm[i]; i++) {
+ free (sg->sg_adm[i]);
+ }
+ free (sg->sg_adm);
+ free (sg->sg_passwd);
+ free (sg->sg_name);
+ free (sg);
+ return NULL;
+ }
+ }
+ sg->sg_adm[i] = NULL;
+
+ for (i = 0; NULL != sgent->sg_mem[i]; i++);
+ /*@-mustfreeonly@*/
+ sg->sg_mem = (char **) malloc ((i + 1) * sizeof (char *));
+ /*@=mustfreeonly@*/
+ if (NULL == sg->sg_mem) {
+ for (i = 0; NULL != sg->sg_adm[i]; i++) {
+ free (sg->sg_adm[i]);
+ }
+ free (sg->sg_adm);
+ free (sg->sg_passwd);
+ free (sg->sg_name);
+ free (sg);
+ return NULL;
+ }
+ for (i = 0; NULL != sgent->sg_mem[i]; i++) {
+ sg->sg_mem[i] = strdup (sgent->sg_mem[i]);
+ if (NULL == sg->sg_mem[i]) {
+ for (i = 0; NULL != sg->sg_mem[i]; i++) {
+ free (sg->sg_mem[i]);
+ }
+ free (sg->sg_mem);
+ for (i = 0; NULL != sg->sg_adm[i]; i++) {
+ free (sg->sg_adm[i]);
+ }
+ free (sg->sg_adm);
+ free (sg->sg_passwd);
+ free (sg->sg_name);
+ free (sg);
+ return NULL;
+ }
+ }
+ sg->sg_mem[i] = NULL;
+
+ return sg;
+}
+
+static /*@null@*/ /*@only@*/void *gshadow_dup (const void *ent)
+{
+ const struct sgrp *sg = ent;
+
+ return __sgr_dup (sg);
+}
+
+static void gshadow_free (/*@out@*/ /*@only@*/void *ent)
+{
+ struct sgrp *sg = ent;
+
+ sgr_free (sg);
+}
+
+void sgr_free (/*@out@*/ /*@only@*/struct sgrp *sgent)
+{
+ size_t i;
+ free (sgent->sg_name);
+ if (NULL != sgent->sg_passwd) {
+ memzero (sgent->sg_passwd, strlen (sgent->sg_passwd));
+ free (sgent->sg_passwd);
+ }
+ for (i = 0; NULL != sgent->sg_adm[i]; i++) {
+ free (sgent->sg_adm[i]);
+ }
+ free (sgent->sg_adm);
+ for (i = 0; NULL != sgent->sg_mem[i]; i++) {
+ free (sgent->sg_mem[i]);
+ }
+ free (sgent->sg_mem);
+ free (sgent);
+}
+
+static const char *gshadow_getname (const void *ent)
+{
+ const struct sgrp *gr = ent;
+
+ return gr->sg_name;
+}
+
+static void *gshadow_parse (const char *line)
+{
+ return (void *) sgetsgent (line);
+}
+
+static int gshadow_put (const void *ent, FILE * file)
+{
+ const struct sgrp *sg = ent;
+
+ if ( (NULL == sg)
+ || (valid_field (sg->sg_name, ":\n") == -1)
+ || (valid_field (sg->sg_passwd, ":\n") == -1)) {
+ return -1;
+ }
+
+ /* FIXME: fail also if sg->sg_adm == NULL ?*/
+ if (NULL != sg->sg_adm) {
+ size_t i;
+ for (i = 0; NULL != sg->sg_adm[i]; i++) {
+ if (valid_field (sg->sg_adm[i], ",:\n") == -1) {
+ return -1;
+ }
+ }
+ }
+
+ /* FIXME: fail also if sg->sg_mem == NULL ?*/
+ if (NULL != sg->sg_mem) {
+ size_t i;
+ for (i = 0; NULL != sg->sg_mem[i]; i++) {
+ if (valid_field (sg->sg_mem[i], ",:\n") == -1) {
+ return -1;
+ }
+ }
+ }
+
+ return (putsgent (sg, file) == -1) ? -1 : 0;
+}
+
+static struct commonio_ops gshadow_ops = {
+ gshadow_dup,
+ gshadow_free,
+ gshadow_getname,
+ gshadow_parse,
+ gshadow_put,
+ fgetsx,
+ fputsx,
+ NULL, /* open_hook */
+ NULL /* close_hook */
+};
+
+static struct commonio_db gshadow_db = {
+ SGROUP_FILE, /* filename */
+ &gshadow_ops, /* ops */
+ NULL, /* fp */
+#ifdef WITH_SELINUX
+ NULL, /* scontext */
+#endif
+ 0400, /* st_mode */
+ 0, /* st_uid */
+ 0, /* st_gid */
+ NULL, /* head */
+ NULL, /* tail */
+ NULL, /* cursor */
+ false, /* changed */
+ false, /* isopen */
+ false, /* locked */
+ false /* readonly */
+};
+
+int sgr_setdbname (const char *filename)
+{
+ return commonio_setname (&gshadow_db, filename);
+}
+
+/*@observer@*/const char *sgr_dbname (void)
+{
+ return gshadow_db.filename;
+}
+
+bool sgr_file_present (void)
+{
+ if (getdef_bool ("FORCE_SHADOW"))
+ return true;
+ return commonio_present (&gshadow_db);
+}
+
+int sgr_lock (void)
+{
+ return commonio_lock (&gshadow_db);
+}
+
+int sgr_open (int mode)
+{
+ return commonio_open (&gshadow_db, mode);
+}
+
+/*@observer@*/ /*@null@*/const struct sgrp *sgr_locate (const char *name)
+{
+ return commonio_locate (&gshadow_db, name);
+}
+
+int sgr_update (const struct sgrp *sg)
+{
+ return commonio_update (&gshadow_db, (const void *) sg);
+}
+
+int sgr_remove (const char *name)
+{
+ return commonio_remove (&gshadow_db, name);
+}
+
+int sgr_rewind (void)
+{
+ return commonio_rewind (&gshadow_db);
+}
+
+/*@null@*/const struct sgrp *sgr_next (void)
+{
+ return commonio_next (&gshadow_db);
+}
+
+int sgr_close (void)
+{
+ return commonio_close (&gshadow_db);
+}
+
+int sgr_unlock (void)
+{
+ return commonio_unlock (&gshadow_db);
+}
+
+void __sgr_set_changed (void)
+{
+ gshadow_db.changed = true;
+}
+
+/*@dependent@*/ /*@null@*/struct commonio_entry *__sgr_get_head (void)
+{
+ return gshadow_db.head;
+}
+
+void __sgr_del_entry (const struct commonio_entry *ent)
+{
+ commonio_del_entry (&gshadow_db, ent);
+}
+
+/* Sort with respect to group ordering. */
+int sgr_sort ()
+{
+ return commonio_sort_wrt (&gshadow_db, __gr_get_db ());
+}
+#else
+extern int errno; /* warning: ANSI C forbids an empty source file */
+#endif
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