Revive radsecproxy.h and hostport_types.h and move rsp_* into radsecproxy/.

16 files changed, 1823 insertions, 0 deletions

diff --git a/lib/radsecproxy/Makefile.am b/lib/radsecproxy/Makefile.am
new file mode 100644
index 0000000..16b66ae
--- /dev/null
+++ b/lib/radsecproxy/Makefile.am
@@ -0,0 +1,18 @@
+AUTOMAKE_OPTIONS = foreign
+ACLOCAL_AMFLAGS = -I m4
+
+INCLUDES = -I$(top_srcdir)/include -I$(top_srcdir)
+AM_CFLAGS = -Wall -g
+
+noinst_LTLIBRARIES = libradsec-radsecproxy.la
+
+libradsec_radsecproxy_la_SOURCES = \
+	debug.c \
+	hash.c \
+	list.c \
+	util.c
+
+if RS_ENABLE_TLS
+libradsec_radsecproxy_la_SOURCES += \
+	tlscommon.c
+endif
diff --git a/lib/radsecproxy/debug.c b/lib/radsecproxy/debug.c
new file mode 100644
index 0000000..8a4881d
--- /dev/null
+++ b/lib/radsecproxy/debug.c
@@ -0,0 +1,213 @@
+/* Copyright (c) 2007-2009, UNINETT AS
+ * Copyright (c) 2010-2011, NORDUnet A/S */
+/* See LICENSE for licensing information. */
+
+#ifndef SYS_SOLARIS9
+#include <stdint.h>
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <strings.h>
+#include <time.h>
+#include <sys/time.h>
+#include <syslog.h>
+#include <errno.h>
+#include <assert.h>
+#include "debug.h"
+#include "util.h"
+
+static char *debug_ident = NULL;
+static uint8_t debug_level = DBG_INFO;
+static char *debug_filepath = NULL;
+static FILE *debug_file = NULL;
+static int debug_syslogfacility = 0;
+static uint8_t debug_timestamp = 0;
+
+void debug_init(char *ident) {
+    debug_file = stderr;
+    setvbuf(debug_file, NULL, _IONBF, 0);
+    debug_ident = ident;
+}
+
+void debug_set_level(uint8_t level) {
+    switch (level) {
+    case 1:
+	debug_level = DBG_ERR;
+	return;
+    case 2:
+	debug_level = DBG_WARN;
+	return;
+    case 3:
+	debug_level = DBG_NOTICE;
+	return;
+    case 4:
+	debug_level = DBG_INFO;
+	return;
+    case 5:
+	debug_level = DBG_DBG;
+	return;
+    }
+}
+
+void debug_timestamp_on() {
+    debug_timestamp = 1;
+}
+
+uint8_t debug_get_level() {
+    return debug_level;
+}
+
+int debug_set_destination(char *dest) {
+    static const char *facstrings[] = { "LOG_DAEMON", "LOG_MAIL", "LOG_USER", "LOG_LOCAL0",
+					"LOG_LOCAL1", "LOG_LOCAL2", "LOG_LOCAL3", "LOG_LOCAL4",
+					"LOG_LOCAL5", "LOG_LOCAL6", "LOG_LOCAL7", NULL };
+    static const int facvals[] = { LOG_DAEMON, LOG_MAIL, LOG_USER, LOG_LOCAL0,
+				   LOG_LOCAL1, LOG_LOCAL2, LOG_LOCAL3, LOG_LOCAL4,
+				   LOG_LOCAL5, LOG_LOCAL6, LOG_LOCAL7 };
+    extern int errno;
+    int i;
+
+    if (!strncasecmp(dest, "file:///", 8)) {
+	debug_filepath = stringcopy(dest + 7, 0);
+	debug_file = fopen(debug_filepath, "a");
+	if (!debug_file) {
+	    debug_file = stderr;
+	    debugx(1, DBG_ERR, "Failed to open logfile %s\n%s",
+		   debug_filepath, strerror(errno));
+	}
+	setvbuf(debug_file, NULL, _IONBF, 0);
+	return 1;
+    }
+    if (!strncasecmp(dest, "x-syslog://", 11)) {
+	dest += 11;
+	if (*dest == '/')
+	    dest++;
+	if (*dest) {
+	    for (i = 0; facstrings[i]; i++)
+		if (!strcasecmp(dest, facstrings[i]))
+		    break;
+	    if (!facstrings[i])
+		debugx(1, DBG_ERR, "Unknown syslog facility %s", dest);
+	    debug_syslogfacility = facvals[i];
+	} else
+	    debug_syslogfacility = LOG_DAEMON;
+	openlog(debug_ident, LOG_PID, debug_syslogfacility);
+	return 1;
+    }
+    debug(DBG_ERR, "Unknown log destination, exiting %s", dest);
+    exit(1);
+}
+
+void debug_reopen_log() {
+    extern int errno;
+
+    /* not a file, noop, return success */
+    if (!debug_filepath) {
+	debug(DBG_ERR, "skipping reopen");
+	return;
+    }
+
+    if (debug_file != stderr)
+	fclose(debug_file);
+
+    debug_file = fopen(debug_filepath, "a");
+    if (debug_file)
+	debug(DBG_ERR, "Reopened logfile %s", debug_filepath);
+    else {
+	debug_file = stderr;
+	debug(DBG_ERR, "Failed to open logfile %s, using stderr\n%s",
+	      debug_filepath, strerror(errno));
+    }
+    setvbuf(debug_file, NULL, _IONBF, 0);
+}
+
+void debug_logit(uint8_t level, const char *format, va_list ap) {
+    struct timeval now;
+    char *timebuf;
+    int priority;
+
+    if (debug_syslogfacility) {
+	switch (level) {
+	case DBG_DBG:
+	    priority = LOG_DEBUG;
+	    break;
+	case DBG_INFO:
+	    priority = LOG_INFO;
+	    break;
+	case DBG_NOTICE:
+	    priority = LOG_NOTICE;
+	    break;
+	case DBG_WARN:
+	    priority = LOG_WARNING;
+	    break;
+	case DBG_ERR:
+	    priority = LOG_ERR;
+	    break;
+	default:
+	    priority = LOG_DEBUG;
+	}
+	vsyslog(priority, format, ap);
+    } else {
+	if (debug_timestamp && (timebuf = malloc(256))) {
+	    gettimeofday(&now, NULL);
+	    ctime_r(&now.tv_sec, timebuf);
+	    timebuf[strlen(timebuf) - 1] = '\0';
+	    fprintf(debug_file, "%s: ", timebuf + 4);
+	    free(timebuf);
+	}
+	vfprintf(debug_file, format, ap);
+	fprintf(debug_file, "\n");
+    }
+}
+
+void debug(uint8_t level, char *format, ...) {
+    va_list ap;
+    if (level < debug_level)
+	return;
+    va_start(ap, format);
+    debug_logit(level, format, ap);
+    va_end(ap);
+}
+
+void debugx(int status, uint8_t level, char *format, ...) {
+    if (level >= debug_level) {
+	va_list ap;
+	va_start(ap, format);
+	debug_logit(level, format, ap);
+	va_end(ap);
+    }
+    exit(status);
+}
+
+void debugerrno(int err, uint8_t level, char *format, ...) {
+    if (level >= debug_level) {
+	va_list ap;
+	size_t len = strlen(format);
+	char *tmp = malloc(len + 1024 + 2);
+	assert(tmp);
+	strcpy(tmp, format);
+	tmp[len++] = ':';
+	tmp[len++] = ' ';
+	if (strerror_r(err, tmp + len, 1024))
+	    tmp = format;
+	va_start(ap, format);
+	debug_logit(level, tmp, ap);
+	va_end(ap);
+    }
+}
+
+void debugerrnox(int err, uint8_t level, char *format, ...) {
+    if (level >= debug_level) {
+	va_list ap;
+	va_start(ap, format);
+	debugerrno(err, level, format, ap);
+	va_end(ap);
+    }
+    exit(err);
+}
+
+/* Local Variables: */
+/* c-file-style: "stroustrup" */
+/* End: */
diff --git a/lib/radsecproxy/debug.h b/lib/radsecproxy/debug.h
new file mode 100644
index 0000000..f9858ab
--- /dev/null
+++ b/lib/radsecproxy/debug.h
@@ -0,0 +1,36 @@
+/* Copyright (c) 2007-2009, UNINETT AS
+ * Copyright (c) 2010-2011, NORDUnet A/S */
+/* See LICENSE for licensing information. */
+
+#ifndef SYS_SOLARIS9
+#include <stdint.h>
+#endif
+
+#define DBG_DBG 8
+#define DBG_INFO 16
+#define DBG_NOTICE 32
+#define DBG_WARN 64
+#define DBG_ERR 128
+
+#if defined (__cplusplus)
+extern "C" {
+#endif
+
+void debug_init(char *ident);
+void debug_set_level(uint8_t level);
+void debug_timestamp_on();
+uint8_t debug_get_level();
+void debug(uint8_t level, char *format, ...);
+void debugx(int status, uint8_t level, char *format, ...);
+void debugerrno(int err, uint8_t level, char *format, ...);
+void debugerrnox(int err, uint8_t level, char *format, ...);
+int debug_set_destination(char *dest);
+void debug_reopen_log();
+
+#if defined (__cplusplus)
+}
+#endif
+
+/* Local Variables: */
+/* c-file-style: "stroustrup" */
+/* End: */
diff --git a/lib/radsecproxy/gconfig.h b/lib/radsecproxy/gconfig.h
new file mode 100644
index 0000000..3cb34b3
--- /dev/null
+++ b/lib/radsecproxy/gconfig.h
@@ -0,0 +1,32 @@
+/* Copyright (c) 2007-2008, UNINETT AS */
+/* See LICENSE for licensing information. */
+
+#define CONF_STR 1
+#define CONF_CBK 2
+#define CONF_MSTR 3
+#define CONF_BLN 4
+#define CONF_LINT 5
+
+#include <stdio.h>
+
+struct gconffile {
+    char *path;
+    FILE *file;
+    const char *data;
+    size_t datapos;
+};
+
+int getconfigline(struct gconffile **cf, char *block, char **opt, char **val, int *conftype);
+int getgenericconfig(struct gconffile **cf, char *block, ...);
+int pushgconfdata(struct gconffile **cf, const char *data);
+FILE *pushgconfpath(struct gconffile **cf, const char *path);
+FILE *pushgconffile(struct gconffile **cf, FILE *file, const char *description);
+FILE *pushgconfpaths(struct gconffile **cf, const char *path);
+int popgconf(struct gconffile **cf);
+void freegconfmstr(char **mstr);
+void freegconf(struct gconffile **cf);
+struct gconffile *openconfigfile(const char *file);
+
+/* Local Variables: */
+/* c-file-style: "stroustrup" */
+/* End: */
diff --git a/lib/radsecproxy/hash.c b/lib/radsecproxy/hash.c
new file mode 100644
index 0000000..ab17433
--- /dev/null
+++ b/lib/radsecproxy/hash.c
@@ -0,0 +1,131 @@
+/* Copyright (c) 2008, UNINETT AS */
+/* See LICENSE for licensing information. */
+
+#include <stdlib.h>
+#include <string.h>
+#include <pthread.h>
+#include "list.h"
+#include "hash.h"
+
+/* allocates and initialises hash structure; returns NULL if malloc fails */
+struct hash *hash_create() {
+    struct hash *h = malloc(sizeof(struct hash));
+    if (!h)
+	return NULL;
+    h->hashlist = list_create();
+    if (!h->hashlist) {
+	free(h);
+	return NULL;
+    }
+    pthread_mutex_init(&h->mutex, NULL);
+    return h;
+}
+
+/* frees all memory associated with the hash */
+void hash_destroy(struct hash *h) {
+    struct list_node *ln;
+
+    if (!h)
+	return;
+    for (ln = list_first(h->hashlist); ln; ln = list_next(ln)) {
+	free(((struct hash_entry *)ln->data)->key);
+	free(((struct hash_entry *)ln->data)->data);
+    }
+    list_destroy(h->hashlist);
+    pthread_mutex_destroy(&h->mutex);
+}
+
+/* insert entry in hash; returns 1 if ok, 0 if malloc fails */
+int hash_insert(struct hash *h, void *key, uint32_t keylen, void *data) {
+    struct hash_entry *e;
+
+    if (!h)
+	return 0;
+    e = malloc(sizeof(struct hash_entry));
+    if (!e)
+	return 0;
+    memset(e, 0, sizeof(struct hash_entry));
+    e->key = malloc(keylen);
+    if (!e->key) {
+	free(e);
+	return 0;
+    }
+    memcpy(e->key, key, keylen);
+    e->keylen = keylen;
+    e->data = data;
+    pthread_mutex_lock(&h->mutex);
+    if (!list_push(h->hashlist, e)) {
+	pthread_mutex_unlock(&h->mutex);
+	free(e->key);
+	free(e);
+	return 0;
+    }
+    pthread_mutex_unlock(&h->mutex);
+    return 1;
+}
+
+/* reads entry from hash */
+void *hash_read(struct hash *h, void *key, uint32_t keylen) {
+    struct list_node *ln;
+    struct hash_entry *e;
+
+    if (!h)
+	return 0;
+    pthread_mutex_lock(&h->mutex);
+    for (ln = list_first(h->hashlist); ln; ln = list_next(ln)) {
+	e = (struct hash_entry *)ln->data;
+	if (e->keylen == keylen && !memcmp(e->key, key, keylen)) {
+	    pthread_mutex_unlock(&h->mutex);
+	    return e->data;
+	}
+    }
+    pthread_mutex_unlock(&h->mutex);
+    return NULL;
+}
+
+/* extracts entry from hash */
+void *hash_extract(struct hash *h, void *key, uint32_t keylen) {
+    struct list_node *ln;
+    struct hash_entry *e;
+
+    if (!h)
+	return 0;
+    pthread_mutex_lock(&h->mutex);
+    for (ln = list_first(h->hashlist); ln; ln = list_next(ln)) {
+	e = (struct hash_entry *)ln->data;
+	if (e->keylen == keylen && !memcmp(e->key, key, keylen)) {
+	    free(e->key);
+	    list_removedata(h->hashlist, e);
+	    free(e);
+	    pthread_mutex_unlock(&h->mutex);
+	    return e->data;
+	}
+    }
+    pthread_mutex_unlock(&h->mutex);
+    return NULL;
+}
+
+/* returns first entry */
+struct hash_entry *hash_first(struct hash *hash) {
+    struct list_node *ln;
+    struct hash_entry *e;
+    if (!hash || !((ln = list_first(hash->hashlist))))
+	return NULL;
+    e = (struct hash_entry *)ln->data;
+    e->next = ln->next;
+    return e;
+}
+
+/* returns the next node after the argument */
+struct hash_entry *hash_next(struct hash_entry *entry) {
+    struct hash_entry *e;
+    if (!entry || !entry->next)
+	return NULL;
+    e = (struct hash_entry *)entry->next->data;
+    e->next = (struct list_node *)entry->next->next;
+    return e;
+}
+
+/* Local Variables: */
+/* c-file-style: "stroustrup" */
+/* End: */
diff --git a/lib/radsecproxy/hash.h b/lib/radsecproxy/hash.h
new file mode 100644
index 0000000..90ba64b
--- /dev/null
+++ b/lib/radsecproxy/hash.h
@@ -0,0 +1,51 @@
+/* Copyright (c) 2008, UNINETT AS */
+/* See LICENSE for licensing information. */
+
+#ifndef SYS_SOLARIS9
+#include <stdint.h>
+#endif
+
+#if defined (__cplusplus)
+extern "C" {
+#endif
+
+struct hash {
+    struct list *hashlist;
+    pthread_mutex_t mutex;
+};
+
+struct hash_entry {
+    void *key;
+    uint32_t keylen;
+    void *data;
+    struct list_node *next; /* used when walking through hash */
+};
+
+/* allocates and initialises hash structure; returns NULL if malloc fails */
+struct hash *hash_create();
+
+/* frees all memory associated with the hash */
+void hash_destroy(struct hash *hash);
+
+/* insert entry in hash; returns 1 if ok, 0 if malloc fails */
+int hash_insert(struct hash *hash, void *key, uint32_t keylen, void *data);
+
+/* reads entry from hash */
+void *hash_read(struct hash *hash, void *key, uint32_t keylen);
+
+/* extracts (read and remove) entry from hash */
+void *hash_extract(struct hash *hash, void *key, uint32_t keylen);
+
+/* returns first entry */
+struct hash_entry *hash_first(struct hash *hash);
+
+/* returns the next entry after the argument */
+struct hash_entry *hash_next(struct hash_entry *entry);
+
+#if defined (__cplusplus)
+}
+#endif
+
+/* Local Variables: */
+/* c-file-style: "stroustrup" */
+/* End: */
diff --git a/lib/radsecproxy/hostport_types.h b/lib/radsecproxy/hostport_types.h
new file mode 100644
index 0000000..01fb443
--- /dev/null
+++ b/lib/radsecproxy/hostport_types.h
@@ -0,0 +1,6 @@
+struct hostportres {
+    char *host;
+    char *port;
+    uint8_t prefixlen;
+    struct addrinfo *addrinfo;
+};
diff --git a/lib/radsecproxy/list.c b/lib/radsecproxy/list.c
new file mode 100644
index 0000000..4cfd358
--- /dev/null
+++ b/lib/radsecproxy/list.c
@@ -0,0 +1,122 @@
+/* Copyright (c) 2007-2009, UNINETT AS */
+/* See LICENSE for licensing information. */
+
+#if defined HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#include "list.h"
+
+/* allocates and initialises list structure; returns NULL if malloc fails */
+struct list *list_create() {
+    struct list *list = malloc(sizeof(struct list));
+    if (list)
+	memset(list, 0, sizeof(struct list));
+    return list;
+}
+
+/* frees all memory associated with the list */
+void list_destroy(struct list *list) {
+    struct list_node *node, *next;
+
+    if (!list)
+	return;
+
+    for (node = list->first; node; node = next) {
+	free(node->data);
+	next = node->next;
+	free(node);
+    }
+    free(list);
+}
+
+/* appends entry to list; returns 1 if ok, 0 if malloc fails */
+int list_push(struct list *list, void *data) {
+    struct list_node *node;
+
+    node = malloc(sizeof(struct list_node));
+    if (!node)
+	return 0;
+
+    node->next = NULL;
+    node->data = data;
+
+    if (list->first)
+	list->last->next = node;
+    else
+	list->first = node;
+    list->last = node;
+
+    list->count++;
+    return 1;
+}
+
+/* removes first entry from list and returns data */
+void *list_shift(struct list *list) {
+    struct list_node *node;
+    void *data;
+
+    if (!list || !list->first)
+	return NULL;
+
+    node = list->first;
+    list->first = node->next;
+    if (!list->first)
+	list->last = NULL;
+    data = node->data;
+    free(node);
+    list->count--;
+    return data;
+}
+
+/* removes all entries with matching data pointer */
+void list_removedata(struct list *list, void *data) {
+    struct list_node *node, *t;
+
+    if (!list || !list->first)
+	return;
+
+    node = list->first;
+    while (node->data == data) {
+	list->first = node->next;
+	free(node);
+	list->count--;
+	node = list->first;
+	if (!node) {
+	    list->last = NULL;
+	    return;
+	}
+    }
+    for (; node->next; node = node->next)
+	if (node->next->data == data) {
+	    t = node->next;
+	    node->next = t->next;
+	    free(t);
+	    list->count--;
+	    if (!node->next) { /* we removed the last one */
+		list->last = node;
+		return;
+	    }
+	}
+}
+
+/* returns first node */
+struct list_node *list_first(struct list *list) {
+    return list ? list->first : NULL;
+}
+
+/* returns the next node after the argument */
+struct list_node *list_next(struct list_node *node) {
+    return node->next;
+}
+
+/* returns number of nodes */
+uint32_t list_count(struct list *list) {
+    return list->count;
+}
+
+/* Local Variables: */
+/* c-file-style: "stroustrup" */
+/* End: */
diff --git a/lib/radsecproxy/list.h b/lib/radsecproxy/list.h
new file mode 100644
index 0000000..4f4d1f9
--- /dev/null
+++ b/lib/radsecproxy/list.h
@@ -0,0 +1,54 @@
+/* Copyright (c) 2007-2009, UNINETT AS */
+/* See LICENSE for licensing information. */
+
+#ifdef SYS_SOLARIS9
+#include <sys/inttypes.h>
+#else
+#include <stdint.h>
+#endif
+
+#if defined (__cplusplus)
+extern "C" {
+#endif
+
+struct list_node {
+    struct list_node *next;
+    void *data;
+};
+
+struct list {
+    struct list_node *first, *last;
+    uint32_t count;
+};
+
+/* allocates and initialises list structure; returns NULL if malloc fails */
+struct list *list_create();
+
+/* frees all memory associated with the list */
+void list_destroy(struct list *list);
+
+/* appends entry to list; returns 1 if ok, 0 if malloc fails */
+int list_push(struct list *list, void *data);
+
+/* removes first entry from list and returns data */
+void *list_shift(struct list *list);
+
+/* removes first entry with matching data pointer */
+void list_removedata(struct list *list, void *data);
+
+/* returns first node */
+struct list_node *list_first(struct list *list);
+
+/* returns the next node after the argument */
+struct list_node *list_next(struct list_node *node);
+
+/* returns number of nodes */
+uint32_t list_count(struct list *list);
+
+#if defined (__cplusplus)
+}
+#endif
+
+/* Local Variables: */
+/* c-file-style: "stroustrup" */
+/* End: */
diff --git a/lib/radsecproxy/radmsg.h b/lib/radsecproxy/radmsg.h
new file mode 100644
index 0000000..1bef59b
--- /dev/null
+++ b/lib/radsecproxy/radmsg.h
@@ -0,0 +1,40 @@
+/* Copyright (c) 2007-2008, UNINETT AS */
+/* See LICENSE for licensing information. */
+
+#define RAD_Access_Request 1
+#define RAD_Access_Accept 2
+#define RAD_Access_Reject 3
+#define RAD_Accounting_Request 4
+#define RAD_Accounting_Response 5
+#define RAD_Access_Challenge 11
+#define RAD_Status_Server 12
+#define RAD_Status_Client 13
+
+#define RAD_Attr_User_Name 1
+#define RAD_Attr_User_Password 2
+#define RAD_Attr_Reply_Message 18
+#define RAD_Attr_Vendor_Specific 26
+#define RAD_Attr_Calling_Station_Id 31
+#define RAD_Attr_Tunnel_Password 69
+#define RAD_Attr_Message_Authenticator 80
+
+#define RAD_VS_ATTR_MS_MPPE_Send_Key 16
+#define RAD_VS_ATTR_MS_MPPE_Recv_Key 17
+
+struct radmsg {
+    uint8_t code;
+    uint8_t id;
+    uint8_t auth[20];
+    struct list *attrs;
+};
+
+void radmsg_free(struct radmsg *);
+struct radmsg *radmsg_init(uint8_t, uint8_t, uint8_t *);
+int radmsg_add(struct radmsg *, struct tlv *);
+struct tlv *radmsg_gettype(struct radmsg *, uint8_t);
+uint8_t *radmsg2buf(struct radmsg *msg, uint8_t *);
+struct radmsg *buf2radmsg(uint8_t *, uint8_t *, uint8_t *);
+
+/* Local Variables: */
+/* c-file-style: "stroustrup" */
+/* End: */
diff --git a/lib/radsecproxy/radsecproxy.h b/lib/radsecproxy/radsecproxy.h
new file mode 100644
index 0000000..7528f7f
--- /dev/null
+++ b/lib/radsecproxy/radsecproxy.h
@@ -0,0 +1,216 @@
+/*
+ * Copyright (C) 2006-2009 Stig Venaas <venaas@uninett.no>
+ *
+ * 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.
+ */
+
+#include "tlv11.h"
+#include "radmsg.h"
+#include "gconfig.h"
+
+#define DEBUG_LEVEL 2
+
+#define CONFIG_MAIN "/etc/radsecproxy.conf"
+
+/* MAX_REQUESTS must be 256 due to Radius' 8 bit ID field */
+#define MAX_REQUESTS 256
+#define REQUEST_RETRY_INTERVAL 5
+#define REQUEST_RETRY_COUNT 2
+#define DUPLICATE_INTERVAL REQUEST_RETRY_INTERVAL * REQUEST_RETRY_COUNT
+#define MAX_CERT_DEPTH 5
+#define STATUS_SERVER_PERIOD 25
+#define IDLE_TIMEOUT 300
+
+/* 27262 is vendor DANTE Ltd. */
+#define DEFAULT_TTL_ATTR "27262:1"
+
+#define RAD_UDP 0
+#define RAD_TLS 1
+#define RAD_TCP 2
+#define RAD_DTLS 3
+#define RAD_PROTOCOUNT 4
+
+struct options {
+    char *logdestination;
+    char *ttlattr;
+    uint32_t ttlattrtype[2];
+    uint8_t addttl;
+    uint8_t loglevel;
+    uint8_t loopprevention;
+};
+
+struct commonprotoopts {
+    char **listenargs;
+    char *sourcearg;
+};
+
+struct request {
+    struct timeval created;
+    uint32_t refcount;
+    uint8_t *buf, *replybuf;
+    struct radmsg *msg;
+    struct client *from;
+    struct server *to;
+    char *origusername;
+    uint8_t rqid;
+    uint8_t rqauth[16];
+    uint8_t newid;
+    int udpsock; /* only for UDP */
+    uint16_t udpport; /* only for UDP */
+};
+
+/* requests that our client will send */
+struct rqout {
+    pthread_mutex_t *lock;
+    struct request *rq;
+    uint8_t tries;
+    struct timeval expiry;
+};
+
+struct gqueue {
+    struct list *entries;
+    pthread_mutex_t mutex;
+    pthread_cond_t cond;
+};
+
+struct clsrvconf {
+    char *name;
+    uint8_t type; /* RAD_UDP/RAD_TLS/RAD_TCP */
+    const struct protodefs *pdef;
+    char **hostsrc;
+    char *portsrc;
+    struct list *hostports;
+    char *secret;
+    char *tls;
+    char *matchcertattr;
+    regex_t *certcnregex;
+    regex_t *certuriregex;
+    char *confrewritein;
+    char *confrewriteout;
+    char *confrewriteusername;
+    struct modattr *rewriteusername;
+    char *dynamiclookupcommand;
+    uint8_t statusserver;
+    uint8_t retryinterval;
+    uint8_t retrycount;
+    uint8_t dupinterval;
+    uint8_t certnamecheck;
+    uint8_t addttl;
+    uint8_t loopprevention;
+    struct rewrite *rewritein;
+    struct rewrite *rewriteout;
+    pthread_mutex_t *lock; /* only used for updating clients so far */
+    struct tls *tlsconf;
+    struct list *clients;
+    struct server *servers;
+};
+
+#include "tlscommon.h"
+
+struct client {
+    struct clsrvconf *conf;
+    int sock;
+    SSL *ssl;
+    struct request *rqs[MAX_REQUESTS];
+    struct gqueue *replyq;
+    struct gqueue *rbios; /* for dtls */
+    struct sockaddr *addr;
+    time_t expiry; /* for udp */
+};
+
+struct server {
+    struct clsrvconf *conf;
+    int sock;
+    SSL *ssl;
+    pthread_mutex_t lock;
+    pthread_t clientth;
+    uint8_t clientrdgone;
+    struct timeval lastconnecttry;
+    struct timeval lastreply;
+    uint8_t connectionok;
+    uint8_t lostrqs;
+    uint8_t dynstartup;
+    char *dynamiclookuparg;
+    int nextid;
+    struct timeval lastrcv;
+    struct rqout *requests;
+    uint8_t newrq;
+    pthread_mutex_t newrq_mutex;
+    pthread_cond_t newrq_cond;
+    struct gqueue *rbios; /* for dtls */
+};
+
+struct realm {
+    char *name;
+    char *message;
+    uint8_t accresp;
+    regex_t regex;
+    uint32_t refcount;
+    pthread_mutex_t mutex;
+    struct realm *parent;
+    struct list *subrealms;
+    struct list *srvconfs;
+    struct list *accsrvconfs;
+};
+
+struct modattr {
+    uint8_t t;
+    char *replacement;
+    regex_t *regex;
+};
+
+struct rewrite {
+    uint8_t *removeattrs;
+    uint32_t *removevendorattrs;
+    struct list *addattrs;
+    struct list *modattrs;
+};
+
+struct protodefs {
+    char *name;
+    char *secretdefault;
+    int socktype;
+    char *portdefault;
+    uint8_t retrycountdefault;
+    uint8_t retrycountmax;
+    uint8_t retryintervaldefault;
+    uint8_t retryintervalmax;
+    uint8_t duplicateintervaldefault;
+    void (*setprotoopts)(struct commonprotoopts *);
+    char **(*getlistenerargs)();
+    void *(*listener)(void*);
+    int (*connecter)(struct server *, struct timeval *, int, char *);
+    void *(*clientconnreader)(void*);
+    int (*clientradput)(struct server *, unsigned char *);
+    void (*addclient)(struct client *);
+    void (*addserverextra)(struct clsrvconf *);
+    void (*setsrcres)();
+    void (*initextra)();
+};
+
+#define RADLEN(x) ntohs(((uint16_t *)(x))[1])
+
+#define ATTRTYPE(x) ((x)[0])
+#define ATTRLEN(x) ((x)[1])
+#define ATTRVAL(x) ((x) + 2)
+#define ATTRVALLEN(x) ((x)[1] - 2)
+
+struct clsrvconf *find_clconf(uint8_t type, struct sockaddr *addr, struct list_node **cur);
+struct clsrvconf *find_srvconf(uint8_t type, struct sockaddr *addr, struct list_node **cur);
+struct clsrvconf *find_clconf_type(uint8_t type, struct list_node **cur);
+struct client *addclient(struct clsrvconf *conf, uint8_t lock);
+void removelockedclient(struct client *client);
+void removeclient(struct client *client);
+struct gqueue *newqueue();
+void freebios(struct gqueue *q);
+struct request *newrequest();
+void freerq(struct request *rq);
+int radsrv(struct request *rq);
+void replyh(struct server *server, unsigned char *buf);
+struct addrinfo *resolve_hostport_addrinfo(uint8_t type, char *hostport);
+
+/* Local Variables: */
+/* c-file-style: "stroustrup" */
+/* End: */
diff --git a/lib/radsecproxy/tlscommon.c b/lib/radsecproxy/tlscommon.c
new file mode 100644
index 0000000..002788d
--- /dev/null
+++ b/lib/radsecproxy/tlscommon.c
@@ -0,0 +1,545 @@
+/* Copyright (c) 2007-2009, UNINETT AS
+ * Copyright (c) 2010-2011, NORDUnet A/S */
+/* See LICENSE for licensing information. */
+
+#if defined HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <sys/types.h>
+#include <signal.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#include <string.h>
+#include <unistd.h>
+#include <limits.h>
+#ifdef SYS_SOLARIS9
+#include <fcntl.h>
+#endif
+#include <sys/time.h>
+#include <sys/select.h>
+#include <ctype.h>
+#include <sys/wait.h>
+#include <arpa/inet.h>
+#include <regex.h>
+#include <libgen.h>
+#include <pthread.h>
+#include <openssl/ssl.h>
+#include <openssl/rand.h>
+#include <openssl/err.h>
+#include <openssl/md5.h>
+#include <openssl/x509v3.h>
+#include "debug.h"
+#include "list.h"
+#include "hash.h"
+#include "util.h"
+#include "hostport_types.h"
+#include "radsecproxy.h"
+
+static struct hash *tlsconfs = NULL;
+
+void ssl_init(void) {
+    time_t t;
+    pid_t pid;
+
+    SSL_load_error_strings();
+    SSL_library_init();
+
+    while (!RAND_status()) {
+	t = time(NULL);
+	pid = getpid();
+	RAND_seed((unsigned char *)&t, sizeof(time_t));
+	RAND_seed((unsigned char *)&pid, sizeof(pid));
+    }
+}
+
+static int pem_passwd_cb(char *buf, int size, int rwflag, void *userdata) {
+    int pwdlen = strlen(userdata);
+    if (rwflag != 0 || pwdlen > size) /* not for decryption or too large */
+	return 0;
+    memcpy(buf, userdata, pwdlen);
+    return pwdlen;
+}
+
+static int verify_cb(int ok, X509_STORE_CTX *ctx) {
+    char *buf = NULL;
+    X509 *err_cert;
+    int err, depth;
+
+    err_cert = X509_STORE_CTX_get_current_cert(ctx);
+    err = X509_STORE_CTX_get_error(ctx);
+    depth = X509_STORE_CTX_get_error_depth(ctx);
+
+    if (depth > MAX_CERT_DEPTH) {
+	ok = 0;
+	err = X509_V_ERR_CERT_CHAIN_TOO_LONG;
+	X509_STORE_CTX_set_error(ctx, err);
+    }
+
+    if (!ok) {
+	if (err_cert)
+	    buf = X509_NAME_oneline(X509_get_subject_name(err_cert), NULL, 0);
+	debug(DBG_WARN, "verify error: num=%d:%s:depth=%d:%s", err, X509_verify_cert_error_string(err), depth, buf ? buf : "");
+	free(buf);
+	buf = NULL;
+
+	switch (err) {
+	case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
+	    if (err_cert) {
+		buf = X509_NAME_oneline(X509_get_issuer_name(err_cert), NULL, 0);
+		if (buf) {
+		    debug(DBG_WARN, "\tIssuer=%s", buf);
+		    free(buf);
+		    buf = NULL;
+		}
+	    }
+	    break;
+	case X509_V_ERR_CERT_NOT_YET_VALID:
+	case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
+	    debug(DBG_WARN, "\tCertificate not yet valid");
+	    break;
+	case X509_V_ERR_CERT_HAS_EXPIRED:
+	    debug(DBG_WARN, "Certificate has expired");
+	    break;
+	case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
+	    debug(DBG_WARN, "Certificate no longer valid (after notAfter)");
+	    break;
+	case X509_V_ERR_NO_EXPLICIT_POLICY:
+	    debug(DBG_WARN, "No Explicit Certificate Policy");
+	    break;
+	}
+    }
+    return ok;
+}
+
+#ifdef DEBUG
+static void ssl_info_callback(const SSL *ssl, int where, int ret) {
+    const char *s;
+    int w;
+
+    w = where & ~SSL_ST_MASK;
+
+    if (w & SSL_ST_CONNECT)
+	s = "SSL_connect";
+    else if (w & SSL_ST_ACCEPT)
+	s = "SSL_accept";
+    else
+	s = "undefined";
+
+    if (where & SSL_CB_LOOP)
+	debug(DBG_DBG, "%s:%s\n", s, SSL_state_string_long(ssl));
+    else if (where & SSL_CB_ALERT) {
+	s = (where & SSL_CB_READ) ? "read" : "write";
+	debug(DBG_DBG, "SSL3 alert %s:%s:%s\n", s, SSL_alert_type_string_long(ret), SSL_alert_desc_string_long(ret));
+    }
+    else if (where & SSL_CB_EXIT) {
+	if (ret == 0)
+	    debug(DBG_DBG, "%s:failed in %s\n", s, SSL_state_string_long(ssl));
+	else if (ret < 0)
+	    debug(DBG_DBG, "%s:error in %s\n", s, SSL_state_string_long(ssl));
+    }
+}
+#endif
+
+static X509_VERIFY_PARAM *createverifyparams(char **poids) {
+    X509_VERIFY_PARAM *pm;
+    ASN1_OBJECT *pobject;
+    int i;
+
+    pm = X509_VERIFY_PARAM_new();
+    if (!pm)
+	return NULL;
+
+    for (i = 0; poids[i]; i++) {
+	pobject = OBJ_txt2obj(poids[i], 0);
+	if (!pobject) {
+	    X509_VERIFY_PARAM_free(pm);
+	    return NULL;
+	}
+	X509_VERIFY_PARAM_add0_policy(pm, pobject);
+    }
+
+    X509_VERIFY_PARAM_set_flags(pm, X509_V_FLAG_POLICY_CHECK | X509_V_FLAG_EXPLICIT_POLICY);
+    return pm;
+}
+
+static int tlsaddcacrl(SSL_CTX *ctx, struct tls *conf) {
+    STACK_OF(X509_NAME) *calist;
+    X509_STORE *x509_s;
+    unsigned long error;
+
+    if (!SSL_CTX_load_verify_locations(ctx, conf->cacertfile, conf->cacertpath)) {
+	while ((error = ERR_get_error()))
+	    debug(DBG_ERR, "SSL: %s", ERR_error_string(error, NULL));
+	debug(DBG_ERR, "tlsaddcacrl: Error updating TLS context %s", conf->name);
+	return 0;
+    }
+
+	calist = conf->cacertfile ? SSL_load_client_CA_file(conf->cacertfile) : NULL;
+
+    if (!conf->cacertfile || calist) {
+	if (conf->cacertpath) {
+	    if (!calist)
+		calist = sk_X509_NAME_new_null();
+	    if (!SSL_add_dir_cert_subjects_to_stack(calist, conf->cacertpath)) {
+		sk_X509_NAME_free(calist);
+		calist = NULL;
+	    }
+	}
+    }
+    if (!calist) {
+	while ((error = ERR_get_error()))
+	    debug(DBG_ERR, "SSL: %s", ERR_error_string(error, NULL));
+	debug(DBG_ERR, "tlsaddcacrl: Error adding CA subjects in TLS context %s", conf->name);
+	return 0;
+    }
+    ERR_clear_error(); /* add_dir_cert_subj returns errors on success */
+    SSL_CTX_set_client_CA_list(ctx, calist);
+
+    SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT, verify_cb);
+    SSL_CTX_set_verify_depth(ctx, MAX_CERT_DEPTH + 1);
+
+    if (conf->crlcheck || conf->vpm) {
+	x509_s = SSL_CTX_get_cert_store(ctx);
+	if (conf->crlcheck)
+	    X509_STORE_set_flags(x509_s, X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL);
+	if (conf->vpm)
+	    X509_STORE_set1_param(x509_s, conf->vpm);
+    }
+
+    debug(DBG_DBG, "tlsaddcacrl: updated TLS context %s", conf->name);
+    return 1;
+}
+
+static SSL_CTX *tlscreatectx(uint8_t type, struct tls *conf) {
+    SSL_CTX *ctx = NULL;
+    unsigned long error;
+
+    switch (type) {
+#ifdef RADPROT_TLS
+    case RAD_TLS:
+	ctx = SSL_CTX_new(TLSv1_method());
+	break;
+#endif
+#ifdef RADPROT_DTLS
+    case RAD_DTLS:
+	ctx = SSL_CTX_new(DTLSv1_method());
+	SSL_CTX_set_read_ahead(ctx, 1);
+	break;
+#endif
+    }
+    if (!ctx) {
+	debug(DBG_ERR, "tlscreatectx: Error initialising SSL/TLS in TLS context %s", conf->name);
+	while ((error = ERR_get_error()))
+	    debug(DBG_ERR, "SSL: %s", ERR_error_string(error, NULL));
+	return NULL;
+    }
+#ifdef DEBUG
+	SSL_CTX_set_info_callback(ctx, ssl_info_callback);
+#endif
+
+    if (conf->certkeypwd) {
+	SSL_CTX_set_default_passwd_cb_userdata(ctx, conf->certkeypwd);
+	SSL_CTX_set_default_passwd_cb(ctx, pem_passwd_cb);
+    }
+    if (conf->certfile || conf->certkeyfile) {
+	if (!SSL_CTX_use_certificate_chain_file(ctx, conf->certfile) ||
+	    !SSL_CTX_use_PrivateKey_file(ctx, conf->certkeyfile, SSL_FILETYPE_PEM) ||
+	    !SSL_CTX_check_private_key(ctx)) {
+	    while ((error = ERR_get_error()))
+		debug(DBG_ERR, "SSL: %s", ERR_error_string(error, NULL));
+	    debug(DBG_ERR, "tlscreatectx: Error initialising SSL/TLS (certfile issues) in TLS context %s", conf->name);
+	    SSL_CTX_free(ctx);
+	    return NULL;
+	}
+    }
+
+    if (conf->policyoids) {
+	if (!conf->vpm) {
+	    conf->vpm = createverifyparams(conf->policyoids);
+	    if (!conf->vpm) {
+		debug(DBG_ERR, "tlscreatectx: Failed to add policyOIDs in TLS context %s", conf->name);
+		SSL_CTX_free(ctx);
+		return NULL;
+	    }
+	}
+    }
+
+    if (conf->cacertfile != NULL || conf->cacertpath != NULL)
+        if (!tlsaddcacrl(ctx, conf)) {
+            if (conf->vpm) {
+                X509_VERIFY_PARAM_free(conf->vpm);
+                conf->vpm = NULL;
+            }
+            SSL_CTX_free(ctx);
+            return NULL;
+        }
+
+    debug(DBG_DBG, "tlscreatectx: created TLS context %s", conf->name);
+    return ctx;
+}
+
+struct tls *tlsgettls(char *alt1, char *alt2) {
+    struct tls *t;
+
+    t = hash_read(tlsconfs, alt1, strlen(alt1));
+    if (!t)
+	t = hash_read(tlsconfs, alt2, strlen(alt2));
+    return t;
+}
+
+SSL_CTX *tlsgetctx(uint8_t type, struct tls *t) {
+    struct timeval now;
+
+    if (!t)
+	return NULL;
+    gettimeofday(&now, NULL);
+
+    switch (type) {
+#ifdef RADPROT_TLS
+    case RAD_TLS:
+	if (t->tlsexpiry && t->tlsctx) {
+	    if (t->tlsexpiry < now.tv_sec) {
+		t->tlsexpiry = now.tv_sec + t->cacheexpiry;
+		tlsaddcacrl(t->tlsctx, t);
+	    }
+	}
+	if (!t->tlsctx) {
+	    t->tlsctx = tlscreatectx(RAD_TLS, t);
+	    if (t->cacheexpiry)
+		t->tlsexpiry = now.tv_sec + t->cacheexpiry;
+	}
+	return t->tlsctx;
+#endif
+#ifdef RADPROT_DTLS
+    case RAD_DTLS:
+	if (t->dtlsexpiry && t->dtlsctx) {
+	    if (t->dtlsexpiry < now.tv_sec) {
+		t->dtlsexpiry = now.tv_sec + t->cacheexpiry;
+		tlsaddcacrl(t->dtlsctx, t);
+	    }
+	}
+	if (!t->dtlsctx) {
+	    t->dtlsctx = tlscreatectx(RAD_DTLS, t);
+	    if (t->cacheexpiry)
+		t->dtlsexpiry = now.tv_sec + t->cacheexpiry;
+	}
+	return t->dtlsctx;
+#endif
+    }
+    return NULL;
+}
+
+X509 *verifytlscert(SSL *ssl) {
+    X509 *cert;
+    unsigned long error;
+
+    if (SSL_get_verify_result(ssl) != X509_V_OK) {
+	debug(DBG_ERR, "verifytlscert: basic validation failed");
+	while ((error = ERR_get_error()))
+	    debug(DBG_ERR, "verifytlscert: TLS: %s", ERR_error_string(error, NULL));
+	return NULL;
+    }
+
+    cert = SSL_get_peer_certificate(ssl);
+    if (!cert)
+	debug(DBG_ERR, "verifytlscert: failed to obtain certificate");
+    return cert;
+}
+
+int subjectaltnameaddr(X509 *cert, int family, const struct in6_addr *addr) {
+    int loc, i, l, n, r = 0;
+    char *v;
+    X509_EXTENSION *ex;
+    STACK_OF(GENERAL_NAME) *alt;
+    GENERAL_NAME *gn;
+
+    debug(DBG_DBG, "subjectaltnameaddr");
+
+    loc = X509_get_ext_by_NID(cert, NID_subject_alt_name, -1);
+    if (loc < 0)
+	return r;
+
+    ex = X509_get_ext(cert, loc);
+    alt = X509V3_EXT_d2i(ex);
+    if (!alt)
+	return r;
+
+    n = sk_GENERAL_NAME_num(alt);
+    for (i = 0; i < n; i++) {
+	gn = sk_GENERAL_NAME_value(alt, i);
+	if (gn->type != GEN_IPADD)
+	    continue;
+	r = -1;
+	v = (char *)ASN1_STRING_data(gn->d.ia5);
+	l = ASN1_STRING_length(gn->d.ia5);
+	if (((family == AF_INET && l == sizeof(struct in_addr)) || (family == AF_INET6 && l == sizeof(struct in6_addr)))
+	    && !memcmp(v, &addr, l)) {
+	    r = 1;
+	    break;
+	}
+    }
+    GENERAL_NAMES_free(alt);
+    return r;
+}
+
+int subjectaltnameregexp(X509 *cert, int type, const char *exact,  const regex_t *regex) {
+    int loc, i, l, n, r = 0;
+    char *s, *v;
+    X509_EXTENSION *ex;
+    STACK_OF(GENERAL_NAME) *alt;
+    GENERAL_NAME *gn;
+
+    debug(DBG_DBG, "subjectaltnameregexp");
+
+    loc = X509_get_ext_by_NID(cert, NID_subject_alt_name, -1);
+    if (loc < 0)
+	return r;
+
+    ex = X509_get_ext(cert, loc);
+    alt = X509V3_EXT_d2i(ex);
+    if (!alt)
+	return r;
+
+    n = sk_GENERAL_NAME_num(alt);
+    for (i = 0; i < n; i++) {
+	gn = sk_GENERAL_NAME_value(alt, i);
+	if (gn->type != type)
+	    continue;
+	r = -1;
+	v = (char *)ASN1_STRING_data(gn->d.ia5);
+	l = ASN1_STRING_length(gn->d.ia5);
+	if (l <= 0)
+	    continue;
+#ifdef DEBUG
+	printfchars(NULL, gn->type == GEN_DNS ? "dns" : "uri", NULL, v, l);
+#endif
+	if (exact) {
+	    if (memcmp(v, exact, l))
+		continue;
+	} else {
+	    s = stringcopy((char *)v, l);
+	    if (!s) {
+		debug(DBG_ERR, "malloc failed");
+		continue;
+	    }
+	    if (regexec(regex, s, 0, NULL, 0)) {
+		free(s);
+		continue;
+	    }
+	    free(s);
+	}
+	r = 1;
+	break;
+    }
+    GENERAL_NAMES_free(alt);
+    return r;
+}
+
+int cnregexp(X509 *cert, const char *exact, const regex_t *regex) {
+    int loc, l;
+    char *v, *s;
+    X509_NAME *nm;
+    X509_NAME_ENTRY *e;
+    ASN1_STRING *t;
+
+    nm = X509_get_subject_name(cert);
+    loc = -1;
+    for (;;) {
+	loc = X509_NAME_get_index_by_NID(nm, NID_commonName, loc);
+	if (loc == -1)
+	    break;
+	e = X509_NAME_get_entry(nm, loc);
+	t = X509_NAME_ENTRY_get_data(e);
+	v = (char *) ASN1_STRING_data(t);
+	l = ASN1_STRING_length(t);
+	if (l < 0)
+	    continue;
+	if (exact) {
+	    if (l == strlen(exact) && !strncasecmp(exact, v, l))
+		return 1;
+	} else {
+	    s = stringcopy((char *)v, l);
+	    if (!s) {
+		debug(DBG_ERR, "malloc failed");
+		continue;
+	    }
+	    if (regexec(regex, s, 0, NULL, 0)) {
+		free(s);
+		continue;
+	    }
+	    free(s);
+	    return 1;
+	}
+    }
+    return 0;
+}
+
+/* this is a bit sloppy, should not always accept match to any */
+int certnamecheck(X509 *cert, struct list *hostports) {
+    struct list_node *entry;
+    struct hostportres *hp;
+    int r;
+    uint8_t type = 0; /* 0 for DNS, AF_INET for IPv4, AF_INET6 for IPv6 */
+    struct in6_addr addr;
+
+    for (entry = list_first(hostports); entry; entry = list_next(entry)) {
+	hp = (struct hostportres *)entry->data;
+	if (hp->prefixlen != 255) {
+	    /* we disable the check for prefixes */
+	    return 1;
+	}
+	if (inet_pton(AF_INET, hp->host, &addr))
+	    type = AF_INET;
+	else if (inet_pton(AF_INET6, hp->host, &addr))
+	    type = AF_INET6;
+	else
+	    type = 0;
+
+	r = type ? subjectaltnameaddr(cert, type, &addr) : subjectaltnameregexp(cert, GEN_DNS, hp->host, NULL);
+	if (r) {
+	    if (r > 0) {
+		debug(DBG_DBG, "certnamecheck: Found subjectaltname matching %s %s", type ? "address" : "host", hp->host);
+		return 1;
+	    }
+	    debug(DBG_WARN, "certnamecheck: No subjectaltname matching %s %s", type ? "address" : "host", hp->host);
+	} else {
+	    if (cnregexp(cert, hp->host, NULL)) {
+		debug(DBG_DBG, "certnamecheck: Found cn matching host %s", hp->host);
+		return 1;
+	    }
+	    debug(DBG_WARN, "certnamecheck: cn not matching host %s", hp->host);
+	}
+    }
+    return 0;
+}
+
+int verifyconfcert(X509 *cert, struct clsrvconf *conf) {
+    if (conf->certnamecheck) {
+	if (!certnamecheck(cert, conf->hostports)) {
+	    debug(DBG_WARN, "verifyconfcert: certificate name check failed");
+	    return 0;
+	}
+	debug(DBG_WARN, "verifyconfcert: certificate name check ok");
+    }
+    if (conf->certcnregex) {
+	if (cnregexp(cert, NULL, conf->certcnregex) < 1) {
+	    debug(DBG_WARN, "verifyconfcert: CN not matching regex");
+	    return 0;
+	}
+	debug(DBG_DBG, "verifyconfcert: CN matching regex");
+    }
+    if (conf->certuriregex) {
+	if (subjectaltnameregexp(cert, GEN_URI, NULL, conf->certuriregex) < 1) {
+	    debug(DBG_WARN, "verifyconfcert: subjectaltname URI not matching regex");
+	    return 0;
+	}
+	debug(DBG_DBG, "verifyconfcert: subjectaltname URI matching regex");
+    }
+    return 1;
+}
+
+/* Local Variables: */
+/* c-file-style: "stroustrup" */
+/* End: */
diff --git a/lib/radsecproxy/tlscommon.h b/lib/radsecproxy/tlscommon.h
new file mode 100644
index 0000000..da2092e
--- /dev/null
+++ b/lib/radsecproxy/tlscommon.h
@@ -0,0 +1,45 @@
+/* Copyright (c) 2007-2009, UNINETT AS */
+/* See LICENSE for licensing information. */
+
+#include <netinet/in.h>
+#include <openssl/ssl.h>
+
+#if defined (__cplusplus)
+extern "C" {
+#endif
+
+struct tls {
+    char *name;
+    char *cacertfile;
+    char *cacertpath;
+    char *certfile;
+    char *certkeyfile;
+    char *certkeypwd;
+    uint8_t crlcheck;
+    char **policyoids;
+    uint32_t cacheexpiry;
+    uint32_t tlsexpiry;
+    uint32_t dtlsexpiry;
+    X509_VERIFY_PARAM *vpm;
+    SSL_CTX *tlsctx;
+    SSL_CTX *dtlsctx;
+};
+
+#if defined(RADPROT_TLS) || defined(RADPROT_DTLS)
+void ssl_init();
+struct tls *tlsgettls(char *alt1, char *alt2);
+SSL_CTX *tlsgetctx(uint8_t type, struct tls *t);
+X509 *verifytlscert(SSL *ssl);
+int subjectaltnameaddr(X509 *cert, int family, const struct in6_addr *addr);
+int subjectaltnameregexp(X509 *cert, int type, const char *exact,  const regex_t *regex);
+int cnregexp(X509 *cert, const char *exact, const regex_t *regex);
+int verifyconfcert(X509 *cert, struct clsrvconf *conf);
+#endif
+
+#if defined (__cplusplus)
+}
+#endif
+
+/* Local Variables: */
+/* c-file-style: "stroustrup" */
+/* End: */
diff --git a/lib/radsecproxy/tlv11.h b/lib/radsecproxy/tlv11.h
new file mode 100644
index 0000000..87909c0
--- /dev/null
+++ b/lib/radsecproxy/tlv11.h
@@ -0,0 +1,23 @@
+/* Copyright (c) 2008, UNINETT AS
+ * Copyright (c) 2010, NORDUnet A/S */
+/* See LICENSE for licensing information. */
+
+struct tlv {
+    uint8_t t;
+    uint8_t l;
+    uint8_t *v;
+};
+
+struct tlv *maketlv(uint8_t, uint8_t, void *);
+struct tlv *copytlv(struct tlv *);
+void freetlv(struct tlv *);
+int eqtlv(struct tlv *, struct tlv *);
+struct list *copytlvlist(struct list *);
+void freetlvlist(struct list *);
+void rmtlv(struct list *, uint8_t);
+uint8_t *tlv2str(struct tlv *tlv);
+uint8_t *tlv2buf(uint8_t *, const struct tlv *tlv);
+
+/* Local Variables: */
+/* c-file-style: "stroustrup" */
+/* End: */
diff --git a/lib/radsecproxy/util.c b/lib/radsecproxy/util.c
new file mode 100644
index 0000000..ad974ac
--- /dev/null
+++ b/lib/radsecproxy/util.c
@@ -0,0 +1,256 @@
+/* Copyright (c) 2007-2009, UNINETT AS */
+/* See LICENSE for licensing information. */
+
+/* Code contributions from:
+ *
+ * Stefan Winter <stefan.winter@restena.lu>
+ */
+
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/select.h>
+#include <stdarg.h>
+#include "debug.h"
+#include "util.h"
+
+char *stringcopy(const char *s, int len) {
+    char *r;
+    if (!s)
+	return NULL;
+    if (!len)
+	len = strlen(s);
+    r = malloc(len + 1);
+    if (!r)
+	debug(DBG_ERR, "stringcopy: malloc failed");
+    memcpy(r, s, len);
+    r[len] = '\0';
+    return r;
+}
+
+void printfchars(char *prefixfmt, char *prefix, char *charfmt, char *chars, int len) {
+    int i;
+    unsigned char *s = (unsigned char *)chars;
+    if (prefix)
+	printf(prefixfmt ? prefixfmt : "%s: ", prefix);
+    for (i = 0; i < len; i++)
+	printf(charfmt ? charfmt : "%c", s[i]);
+    printf("\n");
+}
+
+void port_set(struct sockaddr *sa, uint16_t port) {
+    switch (sa->sa_family) {
+    case AF_INET:
+	((struct sockaddr_in *)sa)->sin_port = htons(port);
+	break;
+    case AF_INET6:
+	((struct sockaddr_in6 *)sa)->sin6_port = htons(port);
+	break;
+    }
+}
+
+struct sockaddr *addr_copy(struct sockaddr *in) {
+    struct sockaddr *out = NULL;
+
+    switch (in->sa_family) {
+    case AF_INET:
+	out = malloc(sizeof(struct sockaddr_in));
+	if (out) {
+	    memset(out, 0, sizeof(struct sockaddr_in));
+	    ((struct sockaddr_in *)out)->sin_addr = ((struct sockaddr_in *)in)->sin_addr;
+	}
+	break;
+    case AF_INET6:
+	out = malloc(sizeof(struct sockaddr_in6));
+	if (out) {
+	    memset(out, 0, sizeof(struct sockaddr_in6));
+	    ((struct sockaddr_in6 *)out)->sin6_addr = ((struct sockaddr_in6 *)in)->sin6_addr;
+	}
+	break;
+    }
+    out->sa_family = in->sa_family;
+#ifdef SIN6_LEN
+    out->sa_len = in->sa_len;
+#endif
+    return out;
+}
+
+char *addr2string(struct sockaddr *addr) {
+    union {
+	struct sockaddr *sa;
+	struct sockaddr_in *sa4;
+	struct sockaddr_in6 *sa6;
+    } u;
+    struct sockaddr_in sa4;
+    static char addr_buf[2][INET6_ADDRSTRLEN];
+    static int i = 0;
+    i = !i;
+    u.sa = addr;
+    if (u.sa->sa_family == AF_INET6) {
+	if (IN6_IS_ADDR_V4MAPPED(&u.sa6->sin6_addr)) {
+	    memset(&sa4, 0, sizeof(sa4));
+	    sa4.sin_family = AF_INET;
+	    sa4.sin_port = u.sa6->sin6_port;
+	    memcpy(&sa4.sin_addr, &u.sa6->sin6_addr.s6_addr[12], 4);
+	    u.sa4 = &sa4;
+	}
+    }
+    if (getnameinfo(u.sa, SOCKADDRP_SIZE(u.sa), addr_buf[i], sizeof(addr_buf[i]),
+                    NULL, 0, NI_NUMERICHOST)) {
+        debug(DBG_WARN, "getnameinfo failed");
+        return "getnameinfo_failed";
+    }
+    return addr_buf[i];
+}
+
+#if 0
+/* not in use */
+int connectport(int type, char *host, char *port) {
+    struct addrinfo hints, *res0, *res;
+    int s = -1;
+
+    memset(&hints, 0, sizeof(hints));
+    hints.ai_socktype = type;
+    hints.ai_family = AF_UNSPEC;
+
+    if (getaddrinfo(host, port, &hints, &res0) != 0) {
+	debug(DBG_ERR, "connectport: can't resolve host %s port %s", host, port);
+	return -1;
+    }
+
+    for (res = res0; res; res = res->ai_next) {
+	s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
+	if (s < 0) {
+	    debug(DBG_WARN, "connectport: socket failed");
+	    continue;
+	}
+	if (connect(s, res->ai_addr, res->ai_addrlen) == 0)
+	    break;
+	debug(DBG_WARN, "connectport: connect failed");
+	close(s);
+	s = -1;
+    }
+    freeaddrinfo(res0);
+    return s;
+}
+#endif
+
+/* Disable the "Don't Fragment" bit for UDP sockets. It is set by default, which may cause an "oversized"
+   RADIUS packet to be discarded on first attempt (due to Path MTU discovery).
+*/
+
+void disable_DF_bit(int socket, struct addrinfo *res) {
+    if ((res->ai_family == AF_INET) && (res->ai_socktype == SOCK_DGRAM)) {
+#if defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DONT)
+        /*
+         * Turn off Path MTU discovery on IPv4/UDP sockets, Linux variant.
+         */
+	int r, action;
+        debug(DBG_INFO, "disable_DF_bit: disabling DF bit (Linux variant)");
+        action = IP_PMTUDISC_DONT;
+        r = setsockopt(socket, IPPROTO_IP, IP_MTU_DISCOVER, &action, sizeof(action));
+        if (r == -1)
+	    debug(DBG_WARN, "Failed to set IP_MTU_DISCOVER");
+#else
+	debug(DBG_INFO, "Non-Linux platform, unable to unset DF bit for UDP. You should check with tcpdump whether radsecproxy will send its UDP packets with DF bit set!");
+#endif
+    }
+}
+
+int bindtoaddr(struct addrinfo *addrinfo, int family, int reuse, int v6only) {
+    int s, on = 1;
+    struct addrinfo *res;
+
+    for (res = addrinfo; res; res = res->ai_next) {
+	if (family != AF_UNSPEC && family != res->ai_family)
+	    continue;
+	s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
+	if (s < 0) {
+	    debug(DBG_WARN, "bindtoaddr: socket failed");
+	    continue;
+	}
+
+	disable_DF_bit(s,res);
+
+	if (reuse)
+	    setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
+#ifdef IPV6_V6ONLY
+	if (v6only)
+	    setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY, &on, sizeof(on));
+#endif
+	if (!bind(s, res->ai_addr, res->ai_addrlen))
+	    return s;
+	debug(DBG_WARN, "bindtoaddr: bind failed");
+	close(s);
+    }
+    return -1;
+}
+
+int connectnonblocking(int s, const struct sockaddr *addr, socklen_t addrlen, struct timeval *timeout) {
+    int origflags, error = 0, r = -1;
+    fd_set writefds;
+    socklen_t len;
+
+    origflags = fcntl(s, F_GETFL, 0);
+    fcntl(s, F_SETFL, origflags | O_NONBLOCK);
+    if (!connect(s, addr, addrlen)) {
+	r = 0;
+	goto exit;
+    }
+    if (errno != EINPROGRESS)
+	goto exit;
+
+    FD_ZERO(&writefds);
+    FD_SET(s, &writefds);
+    if (select(s + 1, NULL, &writefds, NULL, timeout) < 1)
+	goto exit;
+
+    len = sizeof(error);
+    if (!getsockopt(s, SOL_SOCKET, SO_ERROR, (char*)&error, &len) && !error)
+	r = 0;
+
+exit:
+    fcntl(s, F_SETFL, origflags);
+    return r;
+}
+
+int connecttcp(struct addrinfo *addrinfo, struct addrinfo *src, uint16_t timeout) {
+    int s;
+    struct addrinfo *res;
+    struct timeval to;
+
+    s = -1;
+    if (timeout) {
+	if (addrinfo && addrinfo->ai_next && timeout > 5)
+	    timeout = 5;
+	to.tv_sec = timeout;
+	to.tv_usec = 0;
+    }
+
+    for (res = addrinfo; res; res = res->ai_next) {
+	s = bindtoaddr(src, res->ai_family, 1, 1);
+	if (s < 0) {
+	    debug(DBG_WARN, "connecttoserver: socket failed");
+	    continue;
+	}
+	if ((timeout
+	     ? connectnonblocking(s, res->ai_addr, res->ai_addrlen, &to)
+	     : connect(s, res->ai_addr, res->ai_addrlen)) == 0)
+	    break;
+	debug(DBG_WARN, "connecttoserver: connect failed");
+	close(s);
+	s = -1;
+    }
+    return s;
+}
+
+/* Local Variables: */
+/* c-file-style: "stroustrup" */
+/* End: */
diff --git a/lib/radsecproxy/util.h b/lib/radsecproxy/util.h
new file mode 100644
index 0000000..cec4673
--- /dev/null
+++ b/lib/radsecproxy/util.h
@@ -0,0 +1,35 @@
+/* Copyright (c) 2007-2009, UNINETT AS */
+/* See LICENSE for licensing information. */
+
+#include <sys/socket.h>
+#include <netdb.h>
+
+#define SOCKADDR_SIZE(addr) ((addr).ss_family == AF_INET ?	\
+			     sizeof(struct sockaddr_in) :	\
+			     sizeof(struct sockaddr_in6))
+
+#define SOCKADDRP_SIZE(addr) ((addr)->sa_family == AF_INET ?	\
+			      sizeof(struct sockaddr_in) :	\
+			      sizeof(struct sockaddr_in6))
+
+#if defined (__cplusplus)
+extern "C" {
+#endif
+
+char *stringcopy(const char *s, int len);
+char *addr2string(struct sockaddr *addr);
+struct sockaddr *addr_copy(struct sockaddr *in);
+void port_set(struct sockaddr *sa, uint16_t port);
+
+void printfchars(char *prefixfmt, char *prefix, char *charfmt, char *chars, int len);
+void disable_DF_bit(int socket, struct addrinfo *res);
+int bindtoaddr(struct addrinfo *addrinfo, int family, int reuse, int v6only);
+int connecttcp(struct addrinfo *addrinfo, struct addrinfo *src, uint16_t timeout);
+
+#if defined (__cplusplus)
+}
+#endif
+
+/* Local Variables: */
+/* c-file-style: "stroustrup" */
+/* End: */