Adding upstream version 1.9.13p3.upstream/1.9.13p3upstream

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

1 files changed, 193 insertions, 0 deletions

diff --git a/plugins/group_file/getgrent.c b/plugins/group_file/getgrent.c
new file mode 100644
index 0000000..f37fb0e
--- /dev/null
+++ b/plugins/group_file/getgrent.c
@@ -0,0 +1,193 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2005,2008,2010-2015,2022 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+/*
+ * Trivial replacements for the libc getgrent() family of functions.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <grp.h>
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+
+#undef GRMEM_MAX
+#define GRMEM_MAX 200
+
+static FILE *grf;
+static const char *grfile = "/etc/group";
+static int gr_stayopen;
+
+void mysetgrfile(const char *);
+void mysetgrent(void);
+void myendgrent(void);
+int mysetgroupent(int);
+struct group *mygetgrent(void);
+struct group *mygetgrnam(const char *);
+struct group *mygetgrgid(gid_t);
+
+void
+mysetgrfile(const char *file)
+{
+    grfile = file;
+    if (grf != NULL)
+	myendgrent();
+}
+
+static int
+open_group(int reset)
+{
+    if (grf == NULL) {
+	grf = fopen(grfile, "r");
+	if (grf != NULL) {
+	    if (fcntl(fileno(grf), F_SETFD, FD_CLOEXEC) == -1) {
+		fclose(grf);
+		grf = NULL;
+	    }
+	}
+	if (grf == NULL)
+	    return 0;
+    } else if (reset) {
+	rewind(grf);
+    }
+    return 1;
+}
+
+int
+mysetgroupent(int stayopen)
+{
+    if (!open_group(1))
+	return 0;
+    gr_stayopen = stayopen;
+    return 1;
+}
+
+void
+mysetgrent(void)
+{
+    mysetgroupent(0);
+}
+
+void
+myendgrent(void)
+{
+    if (grf != NULL) {
+	fclose(grf);
+	grf = NULL;
+    }
+    gr_stayopen = 0;
+}
+
+struct group *
+mygetgrent(void)
+{
+    static struct group gr;
+    static char grbuf[LINE_MAX], *gr_mem[GRMEM_MAX+1];
+    size_t len;
+    id_t id;
+    char *cp, *colon;
+    const char *errstr;
+    int n;
+
+    if (!open_group(0))
+	return NULL;
+
+next_entry:
+    if ((colon = fgets(grbuf, sizeof(grbuf), grf)) == NULL)
+	return NULL;
+
+    memset(&gr, 0, sizeof(gr));
+    if ((colon = strchr(cp = colon, ':')) == NULL)
+	goto next_entry;
+    *colon++ = '\0';
+    gr.gr_name = cp;
+    if ((colon = strchr(cp = colon, ':')) == NULL)
+	goto next_entry;
+    *colon++ = '\0';
+    gr.gr_passwd = cp;
+    if ((colon = strchr(cp = colon, ':')) == NULL)
+	goto next_entry;
+    *colon++ = '\0';
+    id = sudo_strtoid(cp, &errstr);
+    if (errstr != NULL)
+	goto next_entry;
+    gr.gr_gid = (gid_t)id;
+    len = strlen(colon);
+    if (len > 0 && colon[len - 1] == '\n')
+	colon[len - 1] = '\0';
+    if (*colon != '\0') {
+	char *last;
+
+	gr.gr_mem = gr_mem;
+	cp = strtok_r(colon, ",", &last);
+	for (n = 0; cp != NULL && n < GRMEM_MAX; n++) {
+	    gr.gr_mem[n] = cp;
+	    cp = strtok_r(NULL, ",", &last);
+	}
+	gr.gr_mem[n] = NULL;
+    } else
+	gr.gr_mem = NULL;
+    return &gr;
+}
+
+struct group *
+mygetgrnam(const char *name)
+{
+    struct group *gr;
+
+    if (!open_group(1))
+	return NULL;
+    while ((gr = mygetgrent()) != NULL) {
+	if (strcmp(gr->gr_name, name) == 0)
+	    break;
+    }
+    if (!gr_stayopen) {
+	fclose(grf);
+	grf = NULL;
+    }
+    return gr;
+}
+
+struct group *
+mygetgrgid(gid_t gid)
+{
+    struct group *gr;
+
+    if (!open_group(1))
+	return NULL;
+    while ((gr = mygetgrent()) != NULL) {
+	if (gr->gr_gid == gid)
+	    break;
+    }
+    if (!gr_stayopen) {
+	fclose(grf);
+	grf = NULL;
+    }
+    return gr;
+}