Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

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

1 files changed, 652 insertions, 0 deletions

diff --git a/source3/utils/net_cache.c b/source3/utils/net_cache.c
new file mode 100644
index 0000000..a5a67ea
--- /dev/null
+++ b/source3/utils/net_cache.c
@@ -0,0 +1,652 @@
+/*
+   Samba Unix/Linux SMB client library
+   Distributed SMB/CIFS Server Management Utility
+   Copyright (C) Rafal Szczesniak    2002
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "net.h"
+#include "libsmb/samlogon_cache.h"
+#include "../librpc/gen_ndr/netlogon.h"
+#include "../librpc/gen_ndr/ndr_netlogon.h"
+#include "libcli/security/dom_sid.h"
+#include "lib/util/strv.h"
+#include "lib/gencache.h"
+
+/**
+ * @file net_cache.c
+ * @brief This is part of the net tool which is basically command
+ *        line wrapper for gencache.c functions (mainly for testing)
+ *
+ **/
+
+
+/*
+ * These routines are used via gencache_iterate() to display the cache's contents
+ * (print_cache_entry) and to flush it (delete_cache_entry).
+ * Both of them are defined by first arg of gencache_iterate() routine.
+ */
+static void print_cache_entry(const char* keystr, DATA_BLOB value,
+                              const time_t timeout, void* dptr)
+{
+	char *timeout_str;
+	char *alloc_str = NULL;
+	const char *datastr;
+	char *datastr_free = NULL;
+	time_t now_t = time(NULL);
+	struct tm timeout_tm, now_tm;
+	struct tm *ptimeout_tm, *pnow_tm;
+
+	ptimeout_tm = localtime_r(&timeout, &timeout_tm);
+	if (ptimeout_tm == NULL) {
+		return;
+	}
+	pnow_tm = localtime_r(&now_t, &now_tm);
+	if (pnow_tm == NULL) {
+		return;
+	}
+
+	/* form up timeout string depending whether it's today's date or not */
+	if (timeout_tm.tm_year != now_tm.tm_year ||
+			timeout_tm.tm_mon != now_tm.tm_mon ||
+			timeout_tm.tm_mday != now_tm.tm_mday) {
+
+		timeout_str = asctime(&timeout_tm);
+		if (!timeout_str) {
+			return;
+		}
+		timeout_str[strlen(timeout_str) - 1] = '\0';	/* remove tailing CR */
+	} else {
+		if (asprintf(&alloc_str, "%.2d:%.2d:%.2d", timeout_tm.tm_hour,
+		         timeout_tm.tm_min, timeout_tm.tm_sec) == -1) {
+			return;
+		}
+		timeout_str = alloc_str;
+	}
+
+	datastr = (char *)value.data;
+
+	if (strnequal(keystr, "NAME2SID/", strlen("NAME2SID/"))) {
+		const char *strv = (char *)value.data;
+		size_t strv_len = value.length;
+		const char *sid = strv_len_next(strv, strv_len, NULL);
+		const char *type = strv_len_next(strv, strv_len, sid);
+		datastr = talloc_asprintf(talloc_tos(), "%s (%s)", sid, type);
+	}
+
+	if (strnequal(keystr, "SID2NAME/", strlen("SID2NAME/"))) {
+		const char *strv = (char *)value.data;
+		size_t strv_len = value.length;
+		const char *domain = strv_len_next(strv, strv_len, NULL);
+		const char *name = strv_len_next(strv, strv_len, domain);
+		const char *type = strv_len_next(strv, strv_len, name);
+		datastr = talloc_asprintf(talloc_tos(), "%s\\%s (%s)",
+					  domain, name, type);
+	}
+
+	if ((value.length > 0) && (value.data[value.length-1] != '\0')) {
+		datastr_free = talloc_asprintf(
+			talloc_tos(), "<binary length %d>",
+			(int)value.length);
+		datastr = datastr_free;
+		if (datastr == NULL) {
+			datastr = "<binary>";
+		}
+	}
+
+	d_printf(_("Key: %s\t Timeout: %s\t Value: %s  %s\n"), keystr,
+	         timeout_str, datastr, timeout > now_t ? "": _("(expired)"));
+
+	SAFE_FREE(alloc_str);
+}
+
+static void delete_cache_entry(const char* keystr, const char* datastr,
+                               const time_t timeout, void* dptr)
+{
+	if (!gencache_del(keystr))
+		d_fprintf(stderr, _("Couldn't delete entry! key = %s\n"),
+			  keystr);
+}
+
+
+/**
+ * Parse text representation of timeout value
+ *
+ * @param timeout_str string containing text representation of the timeout
+ * @return numeric timeout of time_t type
+ **/
+static time_t parse_timeout(const char* timeout_str)
+{
+	char sign = '\0', *number = NULL, unit = '\0';
+	int len, number_begin, number_end;
+	time_t timeout;
+
+	/* sign detection */
+	if (timeout_str[0] == '!' || timeout_str[0] == '+') {
+		sign = timeout_str[0];
+		number_begin = 1;
+	} else {
+		number_begin = 0;
+	}
+
+	/* unit detection */
+	len = strlen(timeout_str);
+	switch (timeout_str[len - 1]) {
+	case 's':
+	case 'm':
+	case 'h':
+	case 'd':
+	case 'w': unit = timeout_str[len - 1];
+	}
+
+	/* number detection */
+	len = (sign) ? strlen(&timeout_str[number_begin]) : len;
+	number_end = (unit) ? len - 1 : len;
+	number = SMB_STRNDUP(&timeout_str[number_begin], number_end);
+
+	/* calculate actual timeout value */
+	timeout = (time_t)atoi(number);
+
+	switch (unit) {
+	case 'm': timeout *= 60; break;
+	case 'h': timeout *= 60*60; break;
+	case 'd': timeout *= 60*60*24; break;
+	case 'w': timeout *= 60*60*24*7; break;  /* that's fair enough, I think :) */
+	}
+
+	switch (sign) {
+	case '!': timeout = time(NULL) - timeout; break;
+	case '+':
+	default:  timeout += time(NULL); break;
+	}
+
+	if (number) SAFE_FREE(number);
+	return timeout;
+}
+
+
+/**
+ * Add an entry to the cache. If it does exist, then set it.
+ *
+ * @param c	A net_context structure
+ * @param argv key, value and timeout are passed in command line
+ * @return 0 on success, otherwise failure
+ **/
+static int net_cache_add(struct net_context *c, int argc, const char **argv)
+{
+	const char *keystr, *datastr, *timeout_str;
+	time_t timeout;
+
+	if (argc < 3 || c->display_usage) {
+		d_printf("%s\n%s",
+			 _("Usage:"),
+			 _("net cache add <key string> <data string> "
+			   "<timeout>\n"));
+		return -1;
+	}
+
+	keystr = argv[0];
+	datastr = argv[1];
+	timeout_str = argv[2];
+
+	/* parse timeout given in command line */
+	timeout = parse_timeout(timeout_str);
+	if (!timeout) {
+		d_fprintf(stderr, _("Invalid timeout argument.\n"));
+		return -1;
+	}
+
+	if (gencache_set(keystr, datastr, timeout)) {
+		d_printf(_("New cache entry stored successfully.\n"));
+		return 0;
+	}
+
+	d_fprintf(stderr, _("Entry couldn't be added. Perhaps there's already such a key.\n"));
+	return -1;
+}
+
+/**
+ * Delete an entry in the cache
+ *
+ * @param c	A net_context structure
+ * @param argv key to delete an entry of
+ * @return 0 on success, otherwise failure
+ **/
+static int net_cache_del(struct net_context *c, int argc, const char **argv)
+{
+	const char *keystr = argv[0];
+
+	if (argc < 1 || c->display_usage) {
+		d_printf("%s\n%s",
+			 _("Usage:"),
+			 _(" net cache del <key string>\n"));
+		return -1;
+	}
+
+	if(gencache_del(keystr)) {
+		d_printf(_("Entry deleted.\n"));
+		return 0;
+	}
+
+	d_fprintf(stderr, _("Couldn't delete specified entry\n"));
+	return -1;
+}
+
+
+/**
+ * Get and display an entry from the cache
+ *
+ * @param c	A net_context structure
+ * @param argv key to search an entry of
+ * @return 0 on success, otherwise failure
+ **/
+static int net_cache_get(struct net_context *c, int argc, const char **argv)
+{
+	const char* keystr = argv[0];
+	DATA_BLOB value;
+	time_t timeout;
+
+	if (argc < 1 || c->display_usage) {
+		d_printf("%s\n%s",
+			 _("Usage:"),
+			 _(" net cache get <key>\n"));
+		return -1;
+	}
+
+	if (gencache_get_data_blob(keystr, NULL, &value, &timeout, NULL)) {
+		print_cache_entry(keystr, value, timeout, NULL);
+		data_blob_free(&value);
+		return 0;
+	}
+
+	d_fprintf(stderr, _("Failed to find entry\n"));
+	return -1;
+}
+
+
+/**
+ * Search an entry/entries in the cache
+ *
+ * @param c	A net_context structure
+ * @param argv key pattern to match the entries to
+ * @return 0 on success, otherwise failure
+ **/
+static int net_cache_search(struct net_context *c, int argc, const char **argv)
+{
+	const char* pattern;
+
+	if (argc < 1 || c->display_usage) {
+		d_printf("%s\n%s",
+			 _("Usage:"),
+			 _(" net cache search <pattern>\n"));
+		return -1;
+	}
+
+	pattern = argv[0];
+	gencache_iterate_blobs(print_cache_entry, NULL, pattern);
+	return 0;
+}
+
+
+/**
+ * List the contents of the cache
+ *
+ * @param c	A net_context structure
+ * @param argv ignored in this functionality
+ * @return always returns 0
+ **/
+static int net_cache_list(struct net_context *c, int argc, const char **argv)
+{
+	const char* pattern = "*";
+
+	if (c->display_usage) {
+		d_printf(  "%s\n"
+			   "net cache list\n"
+			   "    %s\n",
+			 _("Usage:"),
+			 _("List all cache entries."));
+		return 0;
+	}
+	gencache_iterate_blobs(print_cache_entry, NULL, pattern);
+	return 0;
+}
+
+
+/**
+ * Flush the whole cache
+ *
+ * @param c	A net_context structure
+ * @param argv ignored in this functionality
+ * @return always returns 0
+ **/
+static int net_cache_flush(struct net_context *c, int argc, const char **argv)
+{
+	const char* pattern = "*";
+	if (c->display_usage) {
+		d_printf(  "%s\n"
+			   "net cache flush\n"
+			   "    %s",
+			 _("Usage:"),
+			 _("Delete all cache entries."));
+		return 0;
+	}
+	gencache_iterate(delete_cache_entry, NULL, pattern);
+	return 0;
+}
+
+static int netsamlog_cache_for_all_cb(const char *sid_str,
+				      time_t when_cached,
+				      struct netr_SamInfo3 *info3,
+				      void *private_data)
+{
+	struct net_context *c = (struct net_context *)private_data;
+	char *name = NULL;
+
+	name = talloc_asprintf(c, "%s\\%s",
+			       info3->base.logon_domain.string,
+			       info3->base.account_name.string);
+	if (name == NULL) {
+		return -1;
+	}
+
+	d_printf("%-50s %-40s %s\n",
+		 sid_str,
+		 name,
+		 timestring(c, when_cached));
+
+	return 0;
+}
+
+static int net_cache_samlogon_list(struct net_context *c,
+				   int argc,
+				   const char **argv)
+{
+	int ret;
+
+	d_printf("%-50s %-40s When cached\n", "SID", "Name");
+	d_printf("------------------------------------------------------------"
+		 "------------------------------------------------------------"
+		 "----\n");
+
+	ret = netsamlog_cache_for_all(netsamlog_cache_for_all_cb, c);
+	if (ret == -1) {
+		return -1;
+	}
+
+	return 0;
+}
+
+static int net_cache_samlogon_show(struct net_context *c,
+				   int argc,
+				   const char **argv)
+{
+	const char *sid_str = argv[0];
+	struct dom_sid sid;
+	struct dom_sid *user_sids = NULL;
+	uint32_t num_user_sids;
+	struct netr_SamInfo3 *info3 = NULL;
+	char *name = NULL;
+	uint32_t i;
+	NTSTATUS status;
+	bool ok;
+
+	if (argc != 1 || c->display_usage) {
+		d_printf("%s\n"
+			 "net cache samlogon show SID\n"
+			 "    %s\n",
+			 _("Usage:"),
+			 _("Show samlogon cache entry for SID."));
+		return 0;
+	}
+
+	ok = string_to_sid(&sid, sid_str);
+	if (!ok) {
+		d_printf("String to SID failed for %s\n", sid_str);
+		return -1;
+	}
+
+	info3 = netsamlogon_cache_get(c, &sid);
+	if (info3 == NULL) {
+		d_printf("SID %s not found in samlogon cache\n", sid_str);
+		return -1;
+	}
+
+	name = talloc_asprintf(c, "%s\\%s",
+			       info3->base.logon_domain.string,
+			       info3->base.account_name.string);
+	if (name == NULL) {
+		return -1;
+	}
+
+	d_printf("Name: %s\n", name);
+
+	status = sid_array_from_info3(c,
+				      info3,
+				      &user_sids,
+				      &num_user_sids,
+				      true);
+	if (!NT_STATUS_IS_OK(status)) {
+		TALLOC_FREE(user_sids);
+		d_printf("sid_array_from_info3 failed for %s\n", sid_str);
+		return -1;
+	}
+
+	for (i = 0; i < num_user_sids; i++) {
+		struct dom_sid_buf buf;
+		d_printf("SID %2" PRIu32 ": %s\n",
+			 i,
+			 dom_sid_str_buf(&user_sids[i], &buf));
+	}
+
+	TALLOC_FREE(user_sids);
+
+	return 0;
+}
+
+static int net_cache_samlogon_ndrdump(struct net_context *c,
+				      int argc,
+				      const char **argv)
+{
+	const char *sid_str = NULL;
+	struct dom_sid sid;
+	struct netr_SamInfo3 *info3 = NULL;
+	struct ndr_print *ndr_print = NULL;
+	bool ok;
+
+	if (argc != 1 || c->display_usage) {
+		d_printf(  "%s\n"
+			   "net cache samlogon ndrdump SID\n"
+			   "    %s\n",
+			   _("Usage:"),
+			   _("Show samlogon cache entry for SID."));
+		return 0;
+	}
+
+	sid_str = argv[0];
+
+	ok = string_to_sid(&sid, sid_str);
+	if (!ok) {
+		d_printf("String to SID failed for %s\n", sid_str);
+		return -1;
+	}
+
+	info3 = netsamlogon_cache_get(c, &sid);
+	if (info3 == NULL) {
+		d_printf("SID %s not found in samlogon cache\n", sid_str);
+		return -1;
+	}
+
+	ndr_print = talloc_zero(c, struct ndr_print);
+	if (ndr_print == NULL) {
+		d_printf("Could not allocate memory.\n");
+		return -1;
+	}
+
+	ndr_print->print = ndr_print_printf_helper;
+	ndr_print->depth = 1;
+	ndr_print_netr_SamInfo3(ndr_print, "netr_SamInfo3", info3);
+	TALLOC_FREE(ndr_print);
+
+	return 0;
+}
+
+static int net_cache_samlogon_delete(struct net_context *c,
+				     int argc,
+				     const char **argv)
+{
+	const char *sid_str = argv[0];
+	struct dom_sid sid;
+	bool ok;
+
+	if (argc != 1 || c->display_usage) {
+		d_printf(  "%s\n"
+			   "net cache samlogon delete SID\n"
+			   "    %s\n",
+			 _("Usage:"),
+			 _("Delete samlogon cache entry for SID."));
+		return 0;
+	}
+
+	ok = string_to_sid(&sid, sid_str);
+	if (!ok) {
+		d_printf("String to SID failed for %s\n", sid_str);
+		return -1;
+	}
+
+	netsamlogon_clear_cached_user(&sid);
+
+	return 0;
+}
+
+static int net_cache_samlogon(struct net_context *c, int argc, const char **argv)
+{
+	struct functable func[] = {
+		{
+			"list",
+			net_cache_samlogon_list,
+			NET_TRANSPORT_LOCAL,
+			N_("List samlogon cache"),
+			N_("net cache samlogon list\n"
+			   "    List samlogon cachen\n")
+		},
+		{
+			"show",
+			net_cache_samlogon_show,
+			NET_TRANSPORT_LOCAL,
+			N_("Show samlogon cache entry"),
+			N_("net cache samlogon show SID\n"
+			   "    Show samlogon cache entry\n")
+		},
+		{
+			"ndrdump",
+			net_cache_samlogon_ndrdump,
+			NET_TRANSPORT_LOCAL,
+			N_("Dump the samlogon cache entry NDR blob"),
+			N_("net cache samlogon ndrdump SID\n"
+			   "    Dump the samlogon cache entry NDR blob\n")
+		},
+		{
+			"delete",
+			net_cache_samlogon_delete,
+			NET_TRANSPORT_LOCAL,
+			N_("Delete samlogon cache entry"),
+			N_("net cache samlogon delete SID\n"
+			   "    Delete samlogon cache entry\n")
+		},
+		{NULL, NULL, 0, NULL, NULL}
+	};
+
+	return net_run_function(c, argc, argv, "net cache samlogon", func);
+}
+
+/**
+ * Entry point to 'net cache' subfunctionality
+ *
+ * @param c	A net_context structure
+ * @param argv arguments passed to further called functions
+ * @return whatever further functions return
+ **/
+int net_cache(struct net_context *c, int argc, const char **argv)
+{
+	struct functable func[] = {
+		{
+			"add",
+			net_cache_add,
+			NET_TRANSPORT_LOCAL,
+			N_("Add new cache entry"),
+			N_("net cache add <key string> <data string> <timeout>\n"
+			   "  Add new cache entry.\n"
+			   "    key string\tKey string to add cache data under.\n"
+			   "    data string\tData to store under given key.\n"
+			   "    timeout\tTimeout for cache data.")
+		},
+		{
+			"del",
+			net_cache_del,
+			NET_TRANSPORT_LOCAL,
+			N_("Delete existing cache entry by key"),
+			N_("net cache del <key string>\n"
+			   "  Delete existing cache entry by key.\n"
+			   "    key string\tKey string to delete.")
+		},
+		{
+			"get",
+			net_cache_get,
+			NET_TRANSPORT_LOCAL,
+			N_("Get cache entry by key"),
+			N_("net cache get <key string>\n"
+			   "  Get cache entry by key.\n"
+			   "    key string\tKey string to look up cache entry for.")
+
+		},
+		{
+			"search",
+			net_cache_search,
+			NET_TRANSPORT_LOCAL,
+			N_("Search entry by pattern"),
+			N_("net cache search <pattern>\n"
+			   "  Search entry by pattern.\n"
+			   "    pattern\tPattern to search for in cache.")
+		},
+		{
+			"list",
+			net_cache_list,
+			NET_TRANSPORT_LOCAL,
+			N_("List all cache entries"),
+			N_("net cache list\n"
+			   "  List all cache entries")
+		},
+		{
+			"flush",
+			net_cache_flush,
+			NET_TRANSPORT_LOCAL,
+			N_("Delete all cache entries"),
+			N_("net cache flush\n"
+			   "  Delete all cache entries")
+		},
+		{
+			"samlogon",
+			net_cache_samlogon,
+			NET_TRANSPORT_LOCAL,
+			N_("List contents of the samlogon cache"),
+			N_("net cache samlogon\n"
+			   "  List contents of the samlogon cache")
+		},
+		{NULL, NULL, 0, NULL, NULL}
+	};
+
+	return net_run_function(c, argc, argv, "net cache", func);
+}