1 files changed, 141 insertions, 0 deletions
diff --git a/plugins/sudoers/iolog_path_escapes.c b/plugins/sudoers/iolog_path_escapes.c
new file mode 100644
index 0000000..e32d417
--- /dev/null
+++ b/plugins/sudoers/iolog_path_escapes.c
@@ -0,0 +1,141 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2011-2015 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
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <pwd.h>
+#include <grp.h>
+#include <unistd.h>
+
+#include "sudoers.h"
+#include "sudo_iolog.h"
+
+static size_t
+fill_seq(char *str, size_t strsize, void *v)
+{
+#ifdef SUDOERS_NO_SEQ
+    debug_decl(fill_seq, SUDOERS_DEBUG_UTIL);
+    debug_return_size_t(strlcpy(str, "%{seq}", strsize));
+#else
+    char *logdir = v;
+    static char sessid[7];
+    int len;
+    debug_decl(fill_seq, SUDOERS_DEBUG_UTIL);
+
+    if (sessid[0] == '\0') {
+	if (!iolog_nextid(logdir, sessid))
+	    debug_return_size_t((size_t)-1);
+    }
+
+    /* Path is of the form /var/log/sudo-io/00/00/01. */
+    len = snprintf(str, strsize, "%c%c/%c%c/%c%c", sessid[0],
+	sessid[1], sessid[2], sessid[3], sessid[4], sessid[5]);
+    if (len < 0)
+	debug_return_size_t(strsize); /* handle non-standard snprintf() */
+    debug_return_size_t(len);
+#endif /* SUDOERS_NO_SEQ */
+}
+
+static size_t
+fill_user(char *str, size_t strsize, void *unused)
+{
+    debug_decl(fill_user, SUDOERS_DEBUG_UTIL);
+    debug_return_size_t(strlcpy(str, user_name, strsize));
+}
+
+static size_t
+fill_group(char *str, size_t strsize, void *unused)
+{
+    struct group *grp;
+    size_t len;
+    debug_decl(fill_group, SUDOERS_DEBUG_UTIL);
+
+    if ((grp = sudo_getgrgid(user_gid)) != NULL) {
+	len = strlcpy(str, grp->gr_name, strsize);
+	sudo_gr_delref(grp);
+    } else {
+	len = strlen(str);
+	len = snprintf(str + len, strsize - len, "#%u",
+	    (unsigned int) user_gid);
+    }
+    debug_return_size_t(len);
+}
+
+static size_t
+fill_runas_user(char *str, size_t strsize, void *unused)
+{
+    debug_decl(fill_runas_user, SUDOERS_DEBUG_UTIL);
+    debug_return_size_t(strlcpy(str, runas_pw->pw_name, strsize));
+}
+
+static size_t
+fill_runas_group(char *str, size_t strsize, void *unused)
+{
+    struct group *grp;
+    size_t len;
+    debug_decl(fill_runas_group, SUDOERS_DEBUG_UTIL);
+
+    if (runas_gr != NULL) {
+	len = strlcpy(str, runas_gr->gr_name, strsize);
+    } else {
+	if ((grp = sudo_getgrgid(runas_pw->pw_gid)) != NULL) {
+	    len = strlcpy(str, grp->gr_name, strsize);
+	    sudo_gr_delref(grp);
+	} else {
+	    len = strlen(str);
+	    len = snprintf(str + len, strsize - len, "#%u",
+		(unsigned int) runas_pw->pw_gid);
+	}
+    }
+    debug_return_size_t(len);
+}
+
+static size_t
+fill_hostname(char *str, size_t strsize, void *unused)
+{
+    debug_decl(fill_hostname, SUDOERS_DEBUG_UTIL);
+    debug_return_size_t(strlcpy(str, user_shost, strsize));
+}
+
+static size_t
+fill_command(char *str, size_t strsize, void *unused)
+{
+    debug_decl(fill_command, SUDOERS_DEBUG_UTIL);
+    debug_return_size_t(strlcpy(str, user_base, strsize));
+}
+
+/* Note: "seq" must be first in the list. */
+static const struct iolog_path_escape path_escapes[] = {
+    { "seq", fill_seq },
+    { "user", fill_user },
+    { "group", fill_group },
+    { "runas_user", fill_runas_user },
+    { "runas_group", fill_runas_group },
+    { "hostname", fill_hostname },
+    { "command", fill_command },
+    { NULL, NULL }
+};
+const struct iolog_path_escape *sudoers_iolog_path_escapes = path_escapes;