1 files changed, 373 insertions, 0 deletions
diff --git a/source3/utils/net_cache.c b/source3/utils/net_cache.c
new file mode 100644
index 0000000000..4e9ae18c0d
--- /dev/null
+++ b/source3/utils/net_cache.c
@@ -0,0 +1,373 @@
+/*
+   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"
+
+/**
+ * @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, const char* datastr,
+                              const time_t timeout, void* dptr)
+{
+	char *timeout_str;
+	char *alloc_str = NULL;
+	time_t now_t = time(NULL);
+	struct tm timeout_tm, *now_tm;
+	/* localtime returns statically allocated pointer, so timeout_tm
+	   has to be copied somewhere else */
+
+	now_tm = localtime(&timeout);
+	if (!now_tm) {
+		return;
+	}
+	memcpy(&timeout_tm, now_tm, sizeof(struct tm));
+	now_tm = localtime(&now_t);
+	if (!now_tm) {
+		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 {
+		asprintf(&alloc_str, "%.2d:%.2d:%.2d", timeout_tm.tm_hour,
+		         timeout_tm.tm_min, timeout_tm.tm_sec);
+		if (!alloc_str) {
+			return;
+		}
+		timeout_str = alloc_str;
+	}
+
+	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("\nUsage: 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");
+		gencache_shutdown();
+		return 0;
+	}
+
+	d_fprintf(stderr, "Entry couldn't be added. Perhaps there's already such a key.\n");
+	gencache_shutdown();
+	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("\nUsage: 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];
+	char* valuestr;
+	time_t timeout;
+
+	if (argc < 1 || c->display_usage) {
+		d_printf("\nUsage: net cache get <key>\n");
+		return -1;
+	}
+
+	if (gencache_get(keystr, &valuestr, &timeout)) {
+		print_cache_entry(keystr, valuestr, timeout, NULL);
+		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("Usage: net cache search <pattern>\n");
+		return -1;
+	}
+
+	pattern = argv[0];
+	gencache_iterate(print_cache_entry, NULL, pattern);
+	return 0;
+}
+
+
+/**
+ * List the contents of the cache
+ *
+ * @param c	A net_context structure
+ * @param argv ignored in this functionailty
+ * @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("Usage:\n"
+			 "net cache list\n"
+			 "    List all cache entries.\n");
+		return 0;
+	}
+	gencache_iterate(print_cache_entry, NULL, pattern);
+	gencache_shutdown();
+	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("Usage:\n"
+			 "net cache flush\n"
+			 "    Delete all cache entries.\n");
+		return 0;
+	}
+	gencache_iterate(delete_cache_entry, NULL, pattern);
+	gencache_shutdown();
+	return 0;
+}
+
+/**
+ * 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,
+			"Add new cache entry",
+			"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,
+			"Delete existing cache entry by key",
+			"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,
+			"Get cache entry by key",
+			"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,
+			"Search entry by pattern",
+			"net cache search <pattern>\n"
+			"  Search entry by pattern.\n"
+			"    pattern\tPattern to search for in cache."
+		},
+		{
+			"list",
+			net_cache_list,
+			NET_TRANSPORT_LOCAL,
+			"List all cache entries",
+			"net cache list\n"
+			"  List all cache entries"
+		},
+		{
+			"flush",
+			net_cache_flush,
+			NET_TRANSPORT_LOCAL,
+			"Delete all cache entries",
+			"net cache flush\n"
+			"  Delete all cache entries"
+		},
+		{NULL, NULL, 0, NULL, NULL}
+	};
+
+	return net_run_function(c, argc, argv, "net cache", func);
+}