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-rw-r--r--src/openvpn/pool.c532
1 files changed, 0 insertions, 532 deletions
diff --git a/src/openvpn/pool.c b/src/openvpn/pool.c
deleted file mode 100644
index cb666b8..0000000
--- a/src/openvpn/pool.c
+++ /dev/null
@@ -1,532 +0,0 @@
-/*
- * OpenVPN -- An application to securely tunnel IP networks
- * over a single TCP/UDP port, with support for SSL/TLS-based
- * session authentication and key exchange,
- * packet encryption, packet authentication, and
- * packet compression.
- *
- * Copyright (C) 2002-2005 OpenVPN Solutions LLC <info@openvpn.net>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2
- * as published by the Free Software Foundation.
- *
- * 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 (see the file COPYING included with this
- * distribution); if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#ifdef WIN32
-#include "config-win32.h"
-#else
-#include "config.h"
-#endif
-
-#include "syshead.h"
-
-#include "pool.h"
-#include "buffer.h"
-#include "error.h"
-#include "socket.h"
-#include "otime.h"
-
-#include "memdbg.h"
-
-#if P2MP
-
-static void
-ifconfig_pool_entry_free (struct ifconfig_pool_entry *ipe, bool hard)
-{
- ipe->in_use = false;
- if (hard && ipe->common_name)
- {
- free (ipe->common_name);
- ipe->common_name = NULL;
- }
- if (hard)
- ipe->last_release = 0;
- else
- ipe->last_release = now;
-}
-
-static int
-ifconfig_pool_find (struct ifconfig_pool *pool, const char *common_name)
-{
- int i;
- time_t earliest_release = 0;
- int previous_usage = -1;
- int new_usage = -1;
-
- for (i = 0; i < pool->size; ++i)
- {
- struct ifconfig_pool_entry *ipe = &pool->list[i];
- if (!ipe->in_use)
- {
- /*
- * If duplicate_cn mode, take first available IP address
- */
- if (pool->duplicate_cn)
- {
- new_usage = i;
- break;
- }
-
- /*
- * Keep track of the unused IP address entry which
- * was released earliest.
- */
- if ((new_usage == -1 || ipe->last_release < earliest_release) && !ipe->fixed)
- {
- earliest_release = ipe->last_release;
- new_usage = i;
- }
-
- /*
- * Keep track of a possible allocation to us
- * from an earlier session.
- */
- if (previous_usage < 0
- && common_name
- && ipe->common_name
- && !strcmp (common_name, ipe->common_name))
- previous_usage = i;
-
- }
- }
-
- if (previous_usage >= 0)
- return previous_usage;
-
- if (new_usage >= 0)
- return new_usage;
-
- return -1;
-}
-
-/*
- * Verify start/end range
- */
-bool
-ifconfig_pool_verify_range (const int msglevel, const in_addr_t start, const in_addr_t end)
-{
- struct gc_arena gc = gc_new ();
- bool ret = true;
-
- if (start > end)
- {
- msg (msglevel, "--ifconfig-pool start IP [%s] is greater than end IP [%s]",
- print_in_addr_t (start, 0, &gc),
- print_in_addr_t (end, 0, &gc));
- ret = false;
- }
- if (end - start >= IFCONFIG_POOL_MAX)
- {
- msg (msglevel, "--ifconfig-pool address range is too large [%s -> %s]. Current maximum is %d addresses, as defined by IFCONFIG_POOL_MAX variable.",
- print_in_addr_t (start, 0, &gc),
- print_in_addr_t (end, 0, &gc),
- IFCONFIG_POOL_MAX);
- ret = false;
- }
- gc_free (&gc);
- return ret;
-}
-
-struct ifconfig_pool *
-ifconfig_pool_init (int type, in_addr_t start, in_addr_t end, const bool duplicate_cn)
-{
- struct gc_arena gc = gc_new ();
- struct ifconfig_pool *pool = NULL;
-
- ASSERT (start <= end && end - start < IFCONFIG_POOL_MAX);
- ALLOC_OBJ_CLEAR (pool, struct ifconfig_pool);
-
- pool->type = type;
- pool->duplicate_cn = duplicate_cn;
-
- switch (type)
- {
- case IFCONFIG_POOL_30NET:
- pool->base = start & ~3;
- pool->size = (((end | 3) + 1) - pool->base) >> 2;
- break;
- case IFCONFIG_POOL_INDIV:
- pool->base = start;
- pool->size = end - start + 1;
- break;
- default:
- ASSERT (0);
- }
-
- ALLOC_ARRAY_CLEAR (pool->list, struct ifconfig_pool_entry, pool->size);
-
- msg (D_IFCONFIG_POOL, "IFCONFIG POOL: base=%s size=%d",
- print_in_addr_t (pool->base, 0, &gc),
- pool->size);
-
- gc_free (&gc);
- return pool;
-}
-
-void
-ifconfig_pool_free (struct ifconfig_pool *pool)
-{
- if (pool)
- {
- int i;
- for (i = 0; i < pool->size; ++i)
- ifconfig_pool_entry_free (&pool->list[i], true);
- free (pool->list);
- free (pool);
- }
-}
-
-ifconfig_pool_handle
-ifconfig_pool_acquire (struct ifconfig_pool *pool, in_addr_t *local, in_addr_t *remote, const char *common_name)
-{
- int i;
-
- i = ifconfig_pool_find (pool, common_name);
- if (i >= 0)
- {
- struct ifconfig_pool_entry *ipe = &pool->list[i];
- ASSERT (!ipe->in_use);
- ifconfig_pool_entry_free (ipe, true);
- ipe->in_use = true;
- if (common_name)
- ipe->common_name = string_alloc (common_name, NULL);
-
- switch (pool->type)
- {
- case IFCONFIG_POOL_30NET:
- {
- in_addr_t b = pool->base + (i << 2);
- *local = b + 1;
- *remote = b + 2;
- break;
- }
- case IFCONFIG_POOL_INDIV:
- {
- in_addr_t b = pool->base + i;
- *local = 0;
- *remote = b;
- break;
- }
- default:
- ASSERT (0);
- }
- }
- return i;
-}
-
-bool
-ifconfig_pool_release (struct ifconfig_pool* pool, ifconfig_pool_handle hand, const bool hard)
-{
- bool ret = false;
- if (pool && hand >= 0 && hand < pool->size)
- {
- ifconfig_pool_entry_free (&pool->list[hand], hard);
- ret = true;
- }
- return ret;
-}
-
-/*
- * private access functions
- */
-
-static ifconfig_pool_handle
-ifconfig_pool_ip_base_to_handle (const struct ifconfig_pool* pool, const in_addr_t addr)
-{
- ifconfig_pool_handle ret = -1;
-
- switch (pool->type)
- {
- case IFCONFIG_POOL_30NET:
- {
- ret = (addr - pool->base) >> 2;
- break;
- }
- case IFCONFIG_POOL_INDIV:
- {
- ret = (addr - pool->base);
- break;
- }
- default:
- ASSERT (0);
- }
-
- if (ret < 0 || ret >= pool->size)
- ret = -1;
-
- return ret;
-}
-
-static in_addr_t
-ifconfig_pool_handle_to_ip_base (const struct ifconfig_pool* pool, ifconfig_pool_handle hand)
-{
- in_addr_t ret = 0;
-
- if (hand >= 0 && hand < pool->size)
- {
- switch (pool->type)
- {
- case IFCONFIG_POOL_30NET:
- {
- ret = pool->base + (hand << 2);;
- break;
- }
- case IFCONFIG_POOL_INDIV:
- {
- ret = pool->base + hand;
- break;
- }
- default:
- ASSERT (0);
- }
- }
-
- return ret;
-}
-
-static void
-ifconfig_pool_set (struct ifconfig_pool* pool, const char *cn, const in_addr_t addr, const bool fixed)
-{
- ifconfig_pool_handle h = ifconfig_pool_ip_base_to_handle (pool, addr);
- if (h >= 0)
- {
- struct ifconfig_pool_entry *e = &pool->list[h];
- ifconfig_pool_entry_free (e, true);
- e->in_use = false;
- e->common_name = string_alloc (cn, NULL);
- e->last_release = now;
- e->fixed = fixed;
- }
-}
-
-static void
-ifconfig_pool_list (const struct ifconfig_pool* pool, struct status_output *out)
-{
- if (pool && out)
- {
- struct gc_arena gc = gc_new ();
- int i;
-
- for (i = 0; i < pool->size; ++i)
- {
- const struct ifconfig_pool_entry *e = &pool->list[i];
- if (e->common_name)
- {
- const in_addr_t ip = ifconfig_pool_handle_to_ip_base (pool, i);
- status_printf (out, "%s,%s",
- e->common_name,
- print_in_addr_t (ip, 0, &gc));
- }
- }
- gc_free (&gc);
- }
-}
-
-static void
-ifconfig_pool_msg (const struct ifconfig_pool* pool, int msglevel)
-{
- struct status_output *so = status_open (NULL, 0, msglevel, NULL, 0);
- ASSERT (so);
- status_printf (so, "IFCONFIG POOL LIST");
- ifconfig_pool_list (pool, so);
- status_close (so);
-}
-
-/*
- * Deal with reading/writing the ifconfig pool database to a file
- */
-
-struct ifconfig_pool_persist *
-ifconfig_pool_persist_init (const char *filename, int refresh_freq)
-{
- struct ifconfig_pool_persist *ret;
-
- ASSERT (filename);
-
- ALLOC_OBJ_CLEAR (ret, struct ifconfig_pool_persist);
- if (refresh_freq > 0)
- {
- ret->fixed = false;
- ret->file = status_open (filename, refresh_freq, -1, NULL, STATUS_OUTPUT_READ|STATUS_OUTPUT_WRITE);
- }
- else
- {
- ret->fixed = true;
- ret->file = status_open (filename, 0, -1, NULL, STATUS_OUTPUT_READ);
- }
- return ret;
-}
-
-void
-ifconfig_pool_persist_close (struct ifconfig_pool_persist *persist)
-{
- if (persist)
- {
- if (persist->file)
- status_close (persist->file);
- free (persist);
- }
-}
-
-bool
-ifconfig_pool_write_trigger (struct ifconfig_pool_persist *persist)
-{
- if (persist->file)
- return status_trigger (persist->file);
- else
- return false;
-}
-
-void
-ifconfig_pool_read (struct ifconfig_pool_persist *persist, struct ifconfig_pool *pool)
-{
- const int buf_size = 128;
-
- update_time ();
- if (persist && persist->file && pool)
- {
- struct gc_arena gc = gc_new ();
- struct buffer in = alloc_buf_gc (256, &gc);
- char *cn_buf;
- char *ip_buf;
- int line = 0;
-
- ALLOC_ARRAY_CLEAR_GC (cn_buf, char, buf_size, &gc);
- ALLOC_ARRAY_CLEAR_GC (ip_buf, char, buf_size, &gc);
-
- while (true)
- {
- ASSERT (buf_init (&in, 0));
- if (!status_read (persist->file, &in))
- break;
- ++line;
- if (BLEN (&in))
- {
- int c = *BSTR(&in);
- if (c == '#' || c == ';')
- continue;
- if (buf_parse (&in, ',', cn_buf, buf_size)
- && buf_parse (&in, ',', ip_buf, buf_size))
- {
- bool succeeded;
- const in_addr_t addr = getaddr (GETADDR_HOST_ORDER, ip_buf, 0, &succeeded, NULL);
- if (succeeded)
- {
- ifconfig_pool_set (pool, cn_buf, addr, persist->fixed);
- }
- }
- }
- }
-
- ifconfig_pool_msg (pool, D_IFCONFIG_POOL);
-
- gc_free (&gc);
- }
-}
-
-void
-ifconfig_pool_write (struct ifconfig_pool_persist *persist, const struct ifconfig_pool *pool)
-{
- if (persist && persist->file && (status_rw_flags (persist->file) & STATUS_OUTPUT_WRITE) && pool)
- {
- status_reset (persist->file);
- ifconfig_pool_list (pool, persist->file);
- status_flush (persist->file);
- }
-}
-
-/*
- * TESTING ONLY
- */
-
-#ifdef IFCONFIG_POOL_TEST
-
-#define DUP_CN
-
-void
-ifconfig_pool_test (in_addr_t start, in_addr_t end)
-{
- struct gc_arena gc = gc_new ();
- struct ifconfig_pool *p = ifconfig_pool_init (IFCONFIG_POOL_30NET, start, end);
- /*struct ifconfig_pool *p = ifconfig_pool_init (IFCONFIG_POOL_INDIV, start, end);*/
- ifconfig_pool_handle array[256];
- int i;
-
- CLEAR (array);
-
- msg (M_INFO | M_NOPREFIX, "************ 1");
- for (i = 0; i < (int) SIZE (array); ++i)
- {
- char *cn;
- ifconfig_pool_handle h;
- in_addr_t local, remote;
- char buf[256];
- openvpn_snprintf (buf, sizeof(buf), "common-name-%d", i);
-#ifdef DUP_CN
- cn = NULL;
-#else
- cn = buf;
-#endif
- h = ifconfig_pool_acquire (p, &local, &remote, cn);
- if (h < 0)
- break;
- msg (M_INFO | M_NOPREFIX, "IFCONFIG_POOL TEST pass 1: l=%s r=%s cn=%s",
- print_in_addr_t (local, 0, &gc),
- print_in_addr_t (remote, 0, &gc),
- cn);
- array[i] = h;
-
- }
-
- msg (M_INFO | M_NOPREFIX, "************* 2");
- for (i = (int) SIZE (array) / 16; i < (int) SIZE (array) / 8; ++i)
- {
- msg (M_INFO, "Attempt to release %d cn=%s", array[i], p->list[i].common_name);
- if (!ifconfig_pool_release (p, array[i]))
- break;
- msg (M_INFO, "Succeeded");
- }
-
- CLEAR (array);
-
- msg (M_INFO | M_NOPREFIX, "**************** 3");
- for (i = 0; i < (int) SIZE (array); ++i)
- {
- char *cn;
- ifconfig_pool_handle h;
- in_addr_t local, remote;
- char buf[256];
- snprintf (buf, sizeof(buf), "common-name-%d", i+24);
-#ifdef DUP_CN
- cn = NULL;
-#else
- cn = buf;
-#endif
- h = ifconfig_pool_acquire (p, &local, &remote, cn);
- if (h < 0)
- break;
- msg (M_INFO | M_NOPREFIX, "IFCONFIG_POOL TEST pass 3: l=%s r=%s cn=%s",
- print_in_addr_t (local, 0, &gc),
- print_in_addr_t (remote, 0, &gc),
- cn);
- array[i] = h;
-
- }
-
- ifconfig_pool_free (p);
- gc_free (&gc);
-}
-
-#endif
-
-#endif
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