Adding upstream version 1.9.13p3.upstream/1.9.13p3upstream

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

1 files changed, 219 insertions, 0 deletions

diff --git a/plugins/sudoers/fmtsudoers_cvt.c b/plugins/sudoers/fmtsudoers_cvt.c
new file mode 100644
index 0000000..ad750fa
--- /dev/null
+++ b/plugins/sudoers/fmtsudoers_cvt.c
@@ -0,0 +1,219 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2004-2005, 2007-2020 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 <time.h>
+
+#include "sudoers.h"
+#include "sudo_lbuf.h"
+#include <gram.h>
+
+/*
+ * Write a privilege to lbuf in sudoers format.
+ */
+bool
+sudoers_format_privilege(struct sudo_lbuf *lbuf,
+    struct sudoers_parse_tree *parse_tree, struct privilege *priv,
+    bool expand_aliases)
+{
+    struct cmndspec *cs, *prev_cs;
+    struct cmndtag tags;
+    struct member *m;
+    debug_decl(sudoers_format_privilege, SUDOERS_DEBUG_UTIL);
+
+    /* Convert per-privilege defaults to tags. */
+    sudoers_defaults_list_to_tags(&priv->defaults, &tags);
+
+    /* Print hosts list. */
+    TAILQ_FOREACH(m, &priv->hostlist, entries) {
+	if (m != TAILQ_FIRST(&priv->hostlist))
+	    sudo_lbuf_append(lbuf, ", ");
+	sudoers_format_member(lbuf, parse_tree, m, ", ",
+	    expand_aliases ? HOSTALIAS : UNSPEC);
+    }
+
+    /* Print commands. */
+    sudo_lbuf_append(lbuf, " = ");
+    prev_cs = NULL;
+    TAILQ_FOREACH(cs, &priv->cmndlist, entries) {
+	if (prev_cs == NULL || RUNAS_CHANGED(cs, prev_cs)) {
+	    if (cs != TAILQ_FIRST(&priv->cmndlist))
+		sudo_lbuf_append(lbuf, ", ");
+	    if (cs->runasuserlist != NULL || cs->runasgrouplist != NULL)
+		sudo_lbuf_append(lbuf, "(");
+	    if (cs->runasuserlist != NULL) {
+		TAILQ_FOREACH(m, cs->runasuserlist, entries) {
+		    if (m != TAILQ_FIRST(cs->runasuserlist))
+			sudo_lbuf_append(lbuf, ", ");
+		    sudoers_format_member(lbuf, parse_tree, m, ", ",
+			expand_aliases ? RUNASALIAS : UNSPEC);
+		}
+	    }
+	    if (cs->runasgrouplist != NULL) {
+		sudo_lbuf_append(lbuf, " : ");
+		TAILQ_FOREACH(m, cs->runasgrouplist, entries) {
+		    if (m != TAILQ_FIRST(cs->runasgrouplist))
+			sudo_lbuf_append(lbuf, ", ");
+		    sudoers_format_member(lbuf, parse_tree, m, ", ",
+			expand_aliases ? RUNASALIAS : UNSPEC);
+		}
+	    }
+	    if (cs->runasuserlist != NULL || cs->runasgrouplist != NULL)
+		sudo_lbuf_append(lbuf, ") ");
+	} else if (cs != TAILQ_FIRST(&priv->cmndlist)) {
+	    sudo_lbuf_append(lbuf, ", ");
+	}
+	sudoers_format_cmndspec(lbuf, parse_tree, cs, prev_cs, tags,
+	    expand_aliases);
+	prev_cs = cs;
+    }
+
+    debug_return_bool(!sudo_lbuf_error(lbuf));
+}
+
+/*
+ * Write a userspec to lbuf in sudoers format.
+ */
+bool
+sudoers_format_userspec(struct sudo_lbuf *lbuf,
+    struct sudoers_parse_tree *parse_tree,
+    struct userspec *us, bool expand_aliases)
+{
+    struct privilege *priv;
+    struct sudoers_comment *comment;
+    struct member *m;
+    debug_decl(sudoers_format_userspec, SUDOERS_DEBUG_UTIL);
+
+    /* Print comments (if any). */
+    STAILQ_FOREACH(comment, &us->comments, entries) {
+	sudo_lbuf_append(lbuf, "# %s\n", comment->str);
+    }
+
+    /* Print users list. */
+    TAILQ_FOREACH(m, &us->users, entries) {
+	if (m != TAILQ_FIRST(&us->users))
+	    sudo_lbuf_append(lbuf, ", ");
+	sudoers_format_member(lbuf, parse_tree, m, ", ",
+	    expand_aliases ? USERALIAS : UNSPEC);
+    }
+
+    TAILQ_FOREACH(priv, &us->privileges, entries) {
+	if (priv != TAILQ_FIRST(&us->privileges))
+	    sudo_lbuf_append(lbuf, " : ");
+	else
+	    sudo_lbuf_append(lbuf, " ");
+	if (!sudoers_format_privilege(lbuf, parse_tree, priv, expand_aliases))
+	    break;
+    }
+    sudo_lbuf_append(lbuf, "\n");
+
+    debug_return_bool(!sudo_lbuf_error(lbuf));
+}
+
+/*
+ * Write a userspec_list to lbuf in sudoers format.
+ */
+bool
+sudoers_format_userspecs(struct sudo_lbuf *lbuf,
+    struct sudoers_parse_tree *parse_tree, const char *separator,
+    bool expand_aliases, bool flush)
+{
+    struct userspec *us;
+    debug_decl(sudoers_format_userspecs, SUDOERS_DEBUG_UTIL);
+
+    TAILQ_FOREACH(us, &parse_tree->userspecs, entries) {
+	if (separator != NULL && us != TAILQ_FIRST(&parse_tree->userspecs))
+	    sudo_lbuf_append(lbuf, "%s", separator);
+	if (!sudoers_format_userspec(lbuf, parse_tree, us, expand_aliases))
+	    break;
+	sudo_lbuf_print(lbuf);
+    }
+
+    debug_return_bool(!sudo_lbuf_error(lbuf));
+}
+
+/*
+ * Format and append a defaults line to the specified lbuf.
+ * If next, is specified, it must point to the next defaults
+ * entry in the list; this is used to print multiple defaults
+ * entries with the same binding on a single line.
+ */
+bool
+sudoers_format_default_line(struct sudo_lbuf *lbuf,
+    struct sudoers_parse_tree *parse_tree, struct defaults *d,
+    struct defaults **next, bool expand_aliases)
+{
+    struct member *m;
+    int alias_type;
+    debug_decl(sudoers_format_default_line, SUDOERS_DEBUG_UTIL);
+
+    /* Print Defaults type and binding (if present) */
+    switch (d->type) {
+	case DEFAULTS_HOST:
+	    sudo_lbuf_append(lbuf, "Defaults@");
+	    alias_type = expand_aliases ? HOSTALIAS : UNSPEC;
+	    break;
+	case DEFAULTS_USER:
+	    sudo_lbuf_append(lbuf, "Defaults:");
+	    alias_type = expand_aliases ? USERALIAS : UNSPEC;
+	    break;
+	case DEFAULTS_RUNAS:
+	    sudo_lbuf_append(lbuf, "Defaults>");
+	    alias_type = expand_aliases ? RUNASALIAS : UNSPEC;
+	    break;
+	case DEFAULTS_CMND:
+	    sudo_lbuf_append(lbuf, "Defaults!");
+	    alias_type = expand_aliases ? CMNDALIAS : UNSPEC;
+	    break;
+	default:
+	    sudo_lbuf_append(lbuf, "Defaults");
+	    alias_type = UNSPEC;
+	    break;
+    }
+    TAILQ_FOREACH(m, &d->binding->members, entries) {
+	if (m != TAILQ_FIRST(&d->binding->members))
+	    sudo_lbuf_append(lbuf, ", ");
+	sudoers_format_member(lbuf, parse_tree, m, ", ", alias_type);
+    }
+
+    sudo_lbuf_append(lbuf, " ");
+    sudoers_format_default(lbuf, d);
+
+    if (next != NULL) {
+	/* Merge Defaults with the same binding, there may be multiple. */
+	struct defaults *n;
+	while ((n = TAILQ_NEXT(d, entries)) && d->binding == n->binding) {
+	    sudo_lbuf_append(lbuf, ", ");
+	    sudoers_format_default(lbuf, n);
+	    d = n;
+	}
+	*next = n;
+    }
+    sudo_lbuf_append(lbuf, "\n");
+
+    debug_return_bool(!sudo_lbuf_error(lbuf));
+}