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081ae2eb61b1c7949d71ed4ddf0ce1efe416e218
strongswan-ext/src/charon/plugins/stroke/stroke.c
T
Martin Willi 081ae2eb61 fixed CRL check return value on revoked certificates 
fixed possible refcounting bugs
generic return_null() implementation
2008-03-19 09:44:47 +00:00

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/*
* Copyright (C) 2007 Tobias Brunner
* Copyright (C) 2006-2007 Martin Willi
* Hochschule fuer Technik Rapperswil
*
* 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 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* 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.
*
* $Id$
*/
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <sys/fcntl.h>
#include <unistd.h>
#include <dirent.h>
#include <errno.h>
#include <pthread.h>
#include <signal.h>
#include "stroke.h"
/* stroke message format definition */
#include <stroke_msg.h>
#include <library.h>
#include <daemon.h>
#include <credentials/certificates/x509.h>
#include <credentials/certificates/crl.h>
#include <credentials/certificates/ocsp_request.h>
#include <credentials/certificates/ocsp_response.h>
#include <control/controller.h>
#include <utils/lexparser.h>
#include <asn1/ttodata.h>
#include <asn1/pem.h>
#include <utils/mutex.h>
#include <processing/jobs/callback_job.h>
#include <credentials/credential_set.h>
/* configuration directories and files */
#define CONFIG_DIR IPSEC_CONFDIR
#define IPSEC_D_DIR CONFIG_DIR "/ipsec.d"
#define PRIVATE_KEY_DIR IPSEC_D_DIR "/private"
#define CERTIFICATE_DIR IPSEC_D_DIR "/certs"
#define CA_CERTIFICATE_DIR IPSEC_D_DIR "/cacerts"
#define AA_CERTIFICATE_DIR IPSEC_D_DIR "/aacerts"
#define ATTR_CERTIFICATE_DIR IPSEC_D_DIR "/acerts"
#define OCSP_CERTIFICATE_DIR IPSEC_D_DIR "/ocspcerts"
#define CRL_DIR IPSEC_D_DIR "/crls"
#define SECRETS_FILE CONFIG_DIR "/ipsec.secrets"
/* warning intervals for list functions */
#define CERT_WARNING_INTERVAL 30 /* days */
#define CRL_WARNING_INTERVAL 7 /* days */
typedef struct private_stroke_t private_stroke_t;
typedef struct stroke_credentials_t stroke_credentials_t;
typedef struct ca_creds_t ca_creds_t;
typedef struct creds_t creds_t;
typedef struct ca_section_t ca_section_t;
typedef struct configs_t configs_t;
/**
* loaded ipsec.conf CA sections
*/
struct ca_section_t {
/**
* name of the CA section
*/
char *name;
/**
* reference to cert in trusted_credential_t
*/
certificate_t *cert;
/**
* CRL URIs
*/
linked_list_t *crl;
/**
* OCSP URIs
*/
linked_list_t *ocsp;
};
/**
* private credentail_set_t implementation for CA sections
*/
struct ca_creds_t {
/**
* implements credential set
*/
credential_set_t set;
/**
* list of starters CA sections and its certificates (ca_section_t)
*/
linked_list_t *sections;
/**
* mutex to lock sections list
*/
mutex_t *mutex;
};
/**
* private credential_set_t implementation for trusted certificates and keys
*/
struct creds_t {
/**
* implements credential set
*/
credential_set_t set;
/**
* list of trusted peer/signer/CA certificates (certificate_t)
*/
linked_list_t *certs;
/**
* list of shared secrets (private_shared_key_t)
*/
linked_list_t *shared;
/**
* list of private keys (private_key_t)
*/
linked_list_t *private;
/**
* mutex to lock lists above
*/
mutex_t *mutex;
};
typedef struct private_shared_key_t private_shared_key_t;
/**
* private data of shared_key
*/
struct private_shared_key_t {
/**
* implements shared_key_t
*/
shared_key_t public;
/**
* type of this key
*/
shared_key_type_t type;
/**
* data of the key
*/
chunk_t key;
/**
* list of key owners, as identification_t
*/
linked_list_t *owners;
/**
* reference counter
*/
refcount_t ref;
};
/**
* configuration backend including peer_cfg list
*/
struct configs_t {
/**
* implements backend_t interface
*/
backend_t backend;
/**
* list of peer_cfg_t
*/
linked_list_t *list;
/**
* mutex to lock config list
*/
mutex_t *mutex;
};
/**
* Private data of an stroke_t object.
*/
struct private_stroke_t {
/**
* Public part of stroke_t object.
*/
stroke_t public;
/**
* Unix socket to listen for strokes
*/
int socket;
/**
* job accepting stroke messages
*/
callback_job_t *job;
/**
* CA credentials
*/
ca_creds_t ca_creds;
/**
* other credentials
*/
creds_t creds;
/**
* configuration backend
*/
configs_t configs;
};
typedef struct stroke_log_info_t stroke_log_info_t;
/**
* helper struct to say what and where to log when using controller callback
*/
struct stroke_log_info_t {
/**
* level to log up to
*/
level_t level;
/**
* where to write log
*/
FILE* out;
};
/**
* create a new CA section
*/
static ca_section_t *ca_section_create(char *name, certificate_t *cert)
{
ca_section_t *ca = malloc_thing(ca_section_t);
ca->name = strdup(name);
ca->crl = linked_list_create();
ca->ocsp = linked_list_create();
ca->cert = cert;
return ca;
}
/**
* destroy a ca section entry
*/
static void ca_section_destroy(ca_section_t *this)
{
this->crl->destroy_function(this->crl, free);
this->ocsp->destroy_function(this->ocsp, free);
free(this->name);
free(this);
}
/**
* data to pass to create_inner_cdp
*/
typedef struct {
ca_creds_t *this;
certificate_type_t type;
identification_t *id;
} cdp_data_t;
/**
* destroy cdp enumerator data and unlock list
*/
static void cdp_data_destroy(cdp_data_t *data)
{
data->this->mutex->unlock(data->this->mutex);
free(data);
}
/**
* inner enumerator constructor for CDP URIs
*/
static enumerator_t *create_inner_cdp(ca_section_t *section, cdp_data_t *data)
{
public_key_t *public;
identification_t *keyid;
enumerator_t *enumerator = NULL;
linked_list_t *list;
if (data->type == CERT_X509_OCSP_RESPONSE)
{
list = section->ocsp;
}
else
{
list = section->crl;
}
public = section->cert->get_public_key(section->cert);
if (public)
{
if (!data->id)
{
enumerator = list->create_enumerator(list);
}
else
{
keyid = public->get_id(public, data->id->get_type(data->id));
if (keyid && keyid->matches(keyid, data->id))
{
enumerator = list->create_enumerator(list);
}
}
public->destroy(public);
}
return enumerator;
}
/**
* Implementation of ca_creds_t.set.create_cdp_enumerator.
*/
static enumerator_t *create_cdp_enumerator(ca_creds_t *this,
certificate_type_t type, identification_t *id)
{
cdp_data_t *data;
switch (type)
{ /* we serve CRLs and OCSP responders */
case CERT_X509_CRL:
case CERT_X509_OCSP_RESPONSE:
case CERT_ANY:
break;
default:
return NULL;
}
data = malloc_thing(cdp_data_t);
data->this = this;
data->type = type;
data->id = id;
this->mutex->lock(this->mutex);
return enumerator_create_nested(this->sections->create_enumerator(this->sections),
(void*)create_inner_cdp, data,
(void*)cdp_data_destroy);
}
/**
* data to pass to various filters
*/
typedef struct {
creds_t *this;
identification_t *id;
} id_data_t;
/**
* destroy id enumerator data and unlock list
*/
static void id_data_destroy(id_data_t *data)
{
data->this->mutex->unlock(data->this->mutex);
free(data);
}
/**
* filter function for private key enumerator
*/
static bool private_filter(id_data_t *data,
private_key_t **in, private_key_t **out)
{
identification_t *candidate;
if (data->id == NULL)
{
*out = *in;
return TRUE;
}
candidate = (*in)->get_id(*in, data->id->get_type(data->id));
if (candidate && data->id->equals(data->id, candidate))
{
*out = *in;
return TRUE;
}
return FALSE;
}
/**
* Implements creds_t.set.create_private_enumerator
*/
static enumerator_t* create_private_enumerator(creds_t *this,
key_type_t type, identification_t *id)
{
id_data_t *data;
if (type != KEY_RSA && type != KEY_ANY)
{ /* we only have RSA keys */
return NULL;
}
data = malloc_thing(id_data_t);
data->this = this;
data->id = id;
this->mutex->lock(this->mutex);
return enumerator_create_filter(this->private->create_enumerator(this->private),
(void*)private_filter, data,
(void*)id_data_destroy);
}
/**
* filter function for certs enumerator
*/
static bool certs_filter(id_data_t *data, certificate_t **in, certificate_t **out)
{
public_key_t *public;
identification_t *candidate;
certificate_t *cert = *in;
if (cert->get_type(cert) == CERT_X509_CRL)
{
return FALSE;
}
if (data->id == NULL || cert->has_subject(cert, data->id))
{
*out = *in;
return TRUE;
}
public = (cert)->get_public_key(cert);
if (public)
{
candidate = public->get_id(public, data->id->get_type(data->id));
if (candidate && data->id->equals(data->id, candidate))
{
public->destroy(public);
*out = *in;
return TRUE;
}
public->destroy(public);
}
return FALSE;
}
/**
* filter function for crl enumerator
*/
static bool crl_filter(id_data_t *data, certificate_t **in, certificate_t **out)
{
certificate_t *cert = *in;
if (cert->get_type(cert) != CERT_X509_CRL)
{
return FALSE;
}
if (data->id == NULL || cert->has_issuer(cert, data->id))
{
*out = *in;
return TRUE;
}
return FALSE;
}
/**
* Implements creds_t.set.create_cert_enumerator
*/
static enumerator_t* create_cert_enumerator(creds_t *this,
certificate_type_t cert, key_type_t key,
identification_t *id, bool trusted)
{
id_data_t *data;
if (cert == CERT_X509_CRL)
{
data = malloc_thing(id_data_t);
data->this = this;
data->id = id;
this->mutex->lock(this->mutex);
return enumerator_create_filter(this->certs->create_enumerator(this->certs),
(void*)crl_filter, data,
(void*)id_data_destroy);
}
if (cert != CERT_X509 && cert != CERT_ANY)
{ /* we only have X509 certificates. TODO: ACs? */
return NULL;
}
if (key != KEY_RSA && key != KEY_ANY)
{ /* we only have RSA keys */
return NULL;
}
data = malloc_thing(id_data_t);
data->this = this;
data->id = id;
this->mutex->lock(this->mutex);
return enumerator_create_filter(this->certs->create_enumerator(this->certs),
(void*)certs_filter, data,
(void*)id_data_destroy);
}
/**
* Implementation of shared_key_t.get_type.
*/
static shared_key_type_t get_type(private_shared_key_t *this)
{
return this->type;
}
/**
* Implementation of shared_key_t.get_ref.
*/
static private_shared_key_t* get_ref(private_shared_key_t *this)
{
ref_get(&this->ref);
return this;
}
/**
* Implementation of shared_key_t.destroy
*/
static void shared_key_destroy(private_shared_key_t *this)
{
if (ref_put(&this->ref))
{
this->owners->destroy_offset(this->owners, offsetof(identification_t, destroy));
chunk_free(&this->key);
free(this);
}
}
/**
* Implementation of shared_key_t.get_key.
*/
static chunk_t get_key(private_shared_key_t *this)
{
return this->key;
}
/**
* create a shared key
*/
static private_shared_key_t *private_shared_key_create(shared_key_type_t type, chunk_t key)
{
private_shared_key_t *this = malloc_thing(private_shared_key_t);
this->public.get_type = (shared_key_type_t(*)(shared_key_t*))get_type;
this->public.get_key = (chunk_t(*)(shared_key_t*))get_key;
this->public.get_ref = (shared_key_t*(*)(shared_key_t*))get_ref;
this->public.destroy = (void(*)(shared_key_t*))shared_key_destroy;
this->owners = linked_list_create();
this->type = type;
this->key = key;
this->ref = 1;
return this;
}
/**
* Check if a key has such an owner
*/
static id_match_t has_owner(private_shared_key_t *this, identification_t *owner)
{
enumerator_t *enumerator;
id_match_t match, best = ID_MATCH_NONE;
identification_t *current;
enumerator = this->owners->create_enumerator(this->owners);
while (enumerator->enumerate(enumerator, &current))
{
match = owner->matches(owner, current);
if (match > best)
{
best = match;
}
}
enumerator->destroy(enumerator);
return best;
}
typedef struct {
creds_t *this;
identification_t *me;
identification_t *other;
shared_key_type_t type;
} shared_data_t;
/**
* free shared key enumerator data and unlock list
*/
static void shared_data_destroy(shared_data_t *data)
{
data->this->mutex->unlock(data->this->mutex);
free(data);
}
/**
* filter function for certs enumerator
*/
static bool shared_filter(shared_data_t *data,
private_shared_key_t **in, private_shared_key_t **out,
void **unused1, id_match_t *me,
void **unused2, id_match_t *other)
{
id_match_t my_match, other_match;
if (!(*in)->type == SHARED_ANY && !(*in)->type == data->type)
{
return FALSE;
}
my_match = has_owner(*in, data->me);
other_match = has_owner(*in, data->other);
if (!my_match && !other_match)
{
return FALSE;
}
*out = *in;
if (me)
{
*me = my_match;
}
if (other)
{
*other = other_match;
}
return TRUE;
}
/**
* Implements creds_t.set.create_shared_enumerator
*/
static enumerator_t* create_shared_enumerator(creds_t *this,
shared_key_type_t type, identification_t *me,
identification_t *other)
{
shared_data_t *data = malloc_thing(shared_data_t);
data->this = this;
data->me = me;
data->other = other;
data->type = type;
this->mutex->lock(this->mutex);
return enumerator_create_filter(this->shared->create_enumerator(this->shared),
(void*)shared_filter, data,
(void*)shared_data_destroy);
}
/**
* Helper function which corrects the string pointers
* in a stroke_msg_t. Strings in a stroke_msg sent over "wire"
* contains RELATIVE addresses (relative to the beginning of the
* stroke_msg). They must be corrected if they reach our address
* space...
*/
static void pop_string(stroke_msg_t *msg, char **string)
{
if (*string == NULL)
{
return;
}
/* check for sanity of string pointer and string */
if (string < (char**)msg ||
string > (char**)msg + sizeof(stroke_msg_t) ||
(unsigned long)*string < (unsigned long)((char*)msg->buffer - (char*)msg) ||
(unsigned long)*string > msg->length)
{
*string = "(invalid pointer in stroke msg)";
}
else
{
*string = (char*)msg + (unsigned long)*string;
}
}
/**
* Load an X.509 certificate
*/
static x509_t* load_cert(char *path, x509_flag_t flag)
{
bool pgp = FALSE;
chunk_t chunk;
x509_t *x509;
certificate_t *cert;
time_t notBefore, notAfter, now;
if (!pem_asn1_load_file(path, NULL, &chunk, &pgp))
{
DBG1(DBG_CFG, " could not load certificate file '%s'", path);
return NULL;
}
x509 = (x509_t*)lib->creds->create(lib->creds,
CRED_CERTIFICATE, CERT_X509,
BUILD_BLOB_ASN1_DER, chunk,
BUILD_X509_FLAG, flag,
BUILD_END);
if (x509 == NULL)
{
DBG1(DBG_CFG, " could not load certificate file '%s'", path);
return NULL;
}
DBG1(DBG_CFG, " loaded certificate file '%s'", path);
/* check validity */
cert = &x509->interface;
now = time(NULL);
cert->get_validity(cert, &now, &notBefore, &notAfter);
if (now > notAfter)
{
DBG1(DBG_CFG, " certificate expired at %T, discarded", &notAfter);
cert->destroy(cert);
return NULL;
}
if (now < notBefore)
{
DBG1(DBG_CFG, " certificate not valid before %T", &notBefore);
}
return x509;
}
/**
* Add X.509 certificate to chain
*/
static certificate_t* add_x509_cert(private_stroke_t *this, x509_t* x509)
{
certificate_t *current, *cert = &x509->interface;
enumerator_t *enumerator;
bool new = TRUE;
this->creds.mutex->lock(this->creds.mutex);
enumerator = this->creds.certs->create_enumerator(this->creds.certs);
while (enumerator->enumerate(enumerator, (void**)&current))
{
if (current->equals(current, cert))
{
/* cert already in queue */
cert->destroy(cert);
cert = current;
new = FALSE;
break;
}
}
enumerator->destroy(enumerator);
if (new)
{
this->creds.certs->insert_last(this->creds.certs, cert);
}
this->creds.mutex->unlock(this->creds.mutex);
return cert;
}
/**
* Verify the signature of an X.509 CRL
*/
static bool verify_crl(crl_t* crl)
{
certificate_t *crl_cert = &crl->certificate;
identification_t *issuer = crl_cert->get_issuer(crl_cert);
identification_t *authKeyIdentifier = crl->get_authKeyIdentifier(crl);
certificate_t *issuer_cert;
DBG1(DBG_CFG, " issuer: %D", issuer);
if (authKeyIdentifier)
{
DBG1(DBG_CFG, " authkey: %D", authKeyIdentifier);
}
issuer_cert = charon->credentials->get_cert(charon->credentials, CERT_X509,
KEY_ANY, issuer, TRUE);
if (issuer_cert)
{
bool ok = crl_cert->issued_by(crl_cert, issuer_cert, TRUE);
DBG1(DBG_CFG, " crl is %strusted: %s signature",
ok? "":"un", ok? "good":"bad");
return ok;
}
else
{
DBG1(DBG_CFG, " crl is untrusted: issuer certificate not found");
return FALSE;
}
}
/**
* Add X.509 CRL to chain
*/
static void add_crl(private_stroke_t *this, crl_t* crl)
{
certificate_t *current, *cert = &crl->certificate;
enumerator_t *enumerator;
bool new = TRUE, found = FALSE;
this->creds.mutex->lock(this->creds.mutex);
enumerator = this->creds.certs->create_enumerator(this->creds.certs);
while (enumerator->enumerate(enumerator, (void**)&current))
{
if (current->get_type(current) == CERT_X509_CRL)
{
crl_t *crl_c = (crl_t*)current;
identification_t *authkey = crl->get_authKeyIdentifier(crl);
identification_t *authkey_c = crl_c->get_authKeyIdentifier(crl_c);
/* if compare authorityKeyIdentifiers if available */
if (authkey != NULL && authkey_c != NULL &&
authkey->equals(authkey, authkey_c))
{
found = TRUE;
}
else
{
identification_t *issuer = cert->get_issuer(cert);
identification_t *issuer_c = current->get_issuer(current);
/* otherwise compare issuer distinguished names */
if (issuer->equals(issuer, issuer_c))
{
found = TRUE;
}
}
if (found)
{
new = cert->is_newer(cert, current);
if (new)
{
this->creds.certs->remove_at(this->creds.certs, enumerator);
}
else
{
cert->destroy(cert);
}
break;
}
}
}
enumerator->destroy(enumerator);
if (new)
{
this->creds.certs->insert_last(this->creds.certs, cert);
}
this->creds.mutex->unlock(this->creds.mutex);
}
/**
* Load end entitity certificate
*/
static void load_peer_cert(private_stroke_t *this,
char *filename, identification_t **id)
{
char path[PATH_MAX];
x509_t *x509;
identification_t *peerid = *id;
if (*filename == '/')
{
snprintf(path, sizeof(path), "%s", filename);
}
else
{
snprintf(path, sizeof(path), "%s/%s", CERTIFICATE_DIR, filename);
}
x509 = load_cert(path, 0);
if (x509)
{
certificate_t *cert = &x509->interface;;
identification_t *subject = cert->get_subject(cert);
if (!cert->has_subject(cert, peerid))
{
DBG1(DBG_CFG, " peerid %D not confirmed by certificate, "
"defaulting to subject DN", peerid);
peerid->destroy(peerid);
*id = subject->clone(subject);
}
add_x509_cert(this, x509);
}
}
/**
* Load ca certificate
*/
static certificate_t* load_ca_cert(private_stroke_t *this, char *filename)
{
char path[PATH_MAX];
x509_t *x509;
if (*filename == '/')
{
snprintf(path, sizeof(path), "%s", filename);
}
else
{
snprintf(path, sizeof(path), "%s/%s", CA_CERTIFICATE_DIR, filename);
}
x509 = load_cert(path, X509_CA);
if (x509)
{
return add_x509_cert(this, x509);
}
else
{
return NULL;
}
}
/**
* load trusted certificates from a directory
*/
static void load_certdir(private_stroke_t *this,
char *path, certificate_type_t type, x509_flag_t flag)
{
struct stat st;
char *file;
enumerator_t *enumerator = enumerator_create_directory(path);
if (!enumerator)
{
DBG1(DBG_CFG, " reading directory failed");
return;
}
while (enumerator->enumerate(enumerator, NULL, &file, &st))
{
if (!S_ISREG(st.st_mode))
{
/* skip special file */
continue;
}
if (type == CERT_X509)
{
x509_t *x509 = load_cert(file, flag);
if (x509)
{
add_x509_cert(this, x509);
}
}
else
{
certificate_t *cert;
bool pgp = FALSE;
chunk_t chunk;
if (!pem_asn1_load_file(file, NULL, &chunk, &pgp))
{
continue;
}
cert = lib->creds->create(lib->creds,
CRED_CERTIFICATE, type,
BUILD_BLOB_ASN1_DER, chunk, BUILD_END);
if (type == CERT_X509_CRL)
{
if (cert)
{
crl_t *crl = (crl_t*)cert;
DBG1(DBG_CFG, " loaded crl file '%s'", file);
/* only trusted crls are added to the store */
if (verify_crl(crl))
{
add_crl(this, crl);
}
else
{
DBG1(DBG_CFG, " crl discarded");
cert->destroy(cert);
}
}
else
{
DBG1(DBG_CFG, " could not load crl file '%s'", file);
}
}
}
}
enumerator->destroy(enumerator);
}
/**
* Convert a string of characters into a binary secret
* A string between single or double quotes is treated as ASCII characters
* A string prepended by 0x is treated as HEX and prepended by 0s as Base64
*/
static err_t extract_secret(chunk_t *secret, chunk_t *line)
{
chunk_t raw_secret;
char delimiter = ' ';
bool quotes = FALSE;
if (!eat_whitespace(line))
{
return "missing secret";
}
if (*line->ptr == '\'' || *line->ptr == '"')
{
quotes = TRUE;
delimiter = *line->ptr;
line->ptr++; line->len--;
}
if (!extract_token(&raw_secret, delimiter, line))
{
if (delimiter == ' ')
{
raw_secret = *line;
}
else
{
return "missing second delimiter";
}
}
if (quotes)
{
/* treat as an ASCII string */
*secret = chunk_clone(raw_secret);
}
else
{
size_t len;
err_t ugh;
/* secret converted to binary form doesn't use more space than the raw_secret */
*secret = chunk_alloc(raw_secret.len);
/* convert from HEX or Base64 to binary */
ugh = ttodata(raw_secret.ptr, raw_secret.len, 0, secret->ptr, secret->len, &len);
if (ugh != NULL)
{
chunk_free_randomized(secret);
return ugh;
}
secret->len = len;
}
return NULL;
}
/**
* reload ipsec.secrets
*/
static void load_secrets(private_stroke_t *this)
{
size_t bytes;
int line_nr = 0;
chunk_t chunk, src, line;
FILE *fd;
private_key_t *private;
shared_key_t *shared;
DBG1(DBG_CFG, "loading secrets from '%s'", SECRETS_FILE);
fd = fopen(SECRETS_FILE, "r");
if (fd == NULL)
{
DBG1(DBG_CFG, "opening secrets file '%s' failed");
return;
}
/* TODO: do error checks */
fseek(fd, 0, SEEK_END);
chunk.len = ftell(fd);
rewind(fd);
chunk.ptr = malloc(chunk.len);
bytes = fread(chunk.ptr, 1, chunk.len, fd);
fclose(fd);
src = chunk;
this->creds.mutex->lock(this->creds.mutex);
while (this->creds.shared->remove_last(this->creds.shared,
(void**)&shared) == SUCCESS)
{
shared->destroy(shared);
}
while (this->creds.private->remove_last(this->creds.private,
(void**)&private) == SUCCESS)
{
private->destroy(private);
}
while (fetchline(&src, &line))
{
chunk_t ids, token;
shared_key_type_t type;
line_nr++;
if (!eat_whitespace(&line))
{
continue;
}
if (!extract_token(&ids, ':', &line))
{
DBG1(DBG_CFG, "line %d: missing ':' separator", line_nr);
goto error;
}
/* NULL terminate the ids string by replacing the : separator */
*(ids.ptr + ids.len) = '\0';
if (!eat_whitespace(&line) || !extract_token(&token, ' ', &line))
{
DBG1(DBG_CFG, "line %d: missing token", line_nr);
goto error;
}
if (match("RSA", &token))
{
char path[PATH_MAX];
chunk_t filename;
chunk_t secret = chunk_empty;
private_key_t *key;
bool pgp = FALSE;
chunk_t chunk = chunk_empty;
err_t ugh = extract_value(&filename, &line);
if (ugh != NULL)
{
DBG1(DBG_CFG, "line %d: %s", line_nr, ugh);
goto error;
}
if (filename.len == 0)
{
DBG1(DBG_CFG, "line %d: empty filename", line_nr);
goto error;
}
if (*filename.ptr == '/')
{
/* absolute path name */
snprintf(path, sizeof(path), "%.*s", filename.len, filename.ptr);
}
else
{
/* relative path name */
snprintf(path, sizeof(path), "%s/%.*s", PRIVATE_KEY_DIR,
filename.len, filename.ptr);
}
/* check for optional passphrase */
if (eat_whitespace(&line))
{
ugh = extract_secret(&secret, &line);
if (ugh != NULL)
{
DBG1(DBG_CFG, "line %d: malformed passphrase: %s", line_nr, ugh);
goto error;
}
}
if (pem_asn1_load_file(path, &secret, &chunk, &pgp))
{
key = lib->creds->create(lib->creds, CRED_PRIVATE_KEY, KEY_RSA,
BUILD_BLOB_ASN1_DER, chunk, BUILD_END);
if (key)
{
DBG1(DBG_CFG, " loaded private key file '%s'", path);
this->creds.private->insert_last(this->creds.private, key);
}
}
chunk_free_randomized(&secret);
}
else if ((match("PSK", &token) && (type = SHARED_IKE)) ||
(match("EAP", &token) && (type = SHARED_EAP)) ||
(match("XAUTH", &token) && (type = SHARED_EAP)) ||
(match("PIN", &token) && (type = SHARED_PIN)))
{
private_shared_key_t *shared_key;
chunk_t secret = chunk_empty;
bool any = TRUE;
err_t ugh = extract_secret(&secret, &line);
if (ugh != NULL)
{
DBG1(DBG_CFG, "line %d: malformed secret: %s", line_nr, ugh);
goto error;
}
shared_key = private_shared_key_create(type, secret);
DBG1(DBG_CFG, " loaded %N secret for %s", shared_key_type_names, type,
ids.len > 0 ? (char*)ids.ptr : "%any");
DBG4(DBG_CFG, " secret:", secret);
this->creds.shared->insert_last(this->creds.shared, shared_key);
while (ids.len > 0)
{
chunk_t id;
identification_t *peer_id;
ugh = extract_value(&id, &ids);
if (ugh != NULL)
{
DBG1(DBG_CFG, "line %d: %s", line_nr, ugh);
goto error;
}
if (id.len == 0)
{
continue;
}
/* NULL terminate the ID string */
*(id.ptr + id.len) = '\0';
peer_id = identification_create_from_string(id.ptr);
if (peer_id == NULL)
{
DBG1(DBG_CFG, "line %d: malformed ID: %s", line_nr, id.ptr);
goto error;
}
if (peer_id->get_type(peer_id) == ID_ANY)
{
peer_id->destroy(peer_id);
continue;
}
shared_key->owners->insert_last(shared_key->owners, peer_id);
any = FALSE;
}
if (any)
{
shared_key->owners->insert_last(shared_key->owners,
identification_create_from_encoding(ID_ANY, chunk_empty));
}
}
else
{
DBG1(DBG_CFG, "line %d: token must be either "
"RSA, PSK, EAP, or PIN", line_nr);
goto error;
}
}
error:
this->creds.mutex->unlock(this->creds.mutex);
chunk_free_randomized(&chunk);
}
/**
* data to pass peer_filter
*/
typedef struct {
configs_t *this;
identification_t *me;
identification_t *other;
} peer_data_t;
/**
* destroy id enumerator data and unlock list
*/
static void peer_data_destroy(peer_data_t *data)
{
data->this->mutex->unlock(data->this->mutex);
free(data);
}
/**
* filter function for peer configs
*/
static bool peer_filter(peer_data_t *data, peer_cfg_t **in, peer_cfg_t **out)
{
if ((!data->me || data->me->matches(data->me, (*in)->get_my_id(*in))) &&
(!data->other || data->other->matches(data->other, (*in)->get_other_id(*in))))
{
*out = *in;
return TRUE;
}
return FALSE;
}
/**
* Implementation of backend_t.create_peer_cfg_enumerator.
*/
static enumerator_t* create_peer_cfg_enumerator(configs_t *this,
identification_t *me,
identification_t *other)
{
peer_data_t *data;
data = malloc_thing(peer_data_t);
data->this = this;
data->me = me;
data->other = other;
this->mutex->lock(this->mutex);
return enumerator_create_filter(this->list->create_enumerator(this->list),
(void*)peer_filter, data,
(void*)peer_data_destroy);
}
/**
* data to pass ike_filter
*/
typedef struct {
configs_t *this;
host_t *me;
host_t *other;
} ike_data_t;
/**
* destroy id enumerator data and unlock list
*/
static void ike_data_destroy(ike_data_t *data)
{
data->this->mutex->unlock(data->this->mutex);
free(data);
}
/**
* filter function for ike configs
*/
static bool ike_filter(ike_data_t *data, peer_cfg_t **in, ike_cfg_t **out)
{
ike_cfg_t *ike_cfg;
host_t *me, *other;
ike_cfg = (*in)->get_ike_cfg(*in);
me = ike_cfg->get_my_host(ike_cfg);
other = ike_cfg->get_other_host(ike_cfg);
if ((!data->me || me->is_anyaddr(me) || me->ip_equals(me, data->me)) &&
(!data->other || other->is_anyaddr(other) || other->ip_equals(other, data->other)))
{
*out = ike_cfg;
return TRUE;
}
return FALSE;
}
/**
* Implementation of backend_t.create_ike_cfg_enumerator.
*/
static enumerator_t* create_ike_cfg_enumerator(configs_t *this,
host_t *me, host_t *other)
{
ike_data_t *data;
data = malloc_thing(ike_data_t);
data->this = this;
data->me = me;
data->other = other;
this->mutex->lock(this->mutex);
return enumerator_create_filter(this->list->create_enumerator(this->list),
(void*)ike_filter, data,
(void*)ike_data_destroy);
}
/**
* implements backend_t.get_peer_cfg_by_name.
*/
static peer_cfg_t *get_peer_cfg_by_name(configs_t *this, char *name)
{
enumerator_t *e1, *e2;
peer_cfg_t *current, *found = NULL;
child_cfg_t *child;
this->mutex->lock(this->mutex);
e1 = this->list->create_enumerator(this->list);
while (e1->enumerate(e1, &current))
{
/* compare peer_cfgs name first */
if (streq(current->get_name(current), name))
{
found = current;
found->get_ref(found);
break;
}
/* compare all child_cfg names otherwise */
e2 = current->create_child_cfg_enumerator(current);
while (e2->enumerate(e2, &child))
{
if (streq(child->get_name(child), name))
{
found = current;
found->get_ref(found);
break;
}
}
e2->destroy(e2);
if (found)
{
break;
}
}
e1->destroy(e1);
this->mutex->unlock(this->mutex);
return found;
}
/**
* Pop the strings of a stroke_end_t struct and log them for debugging purposes
*/
static void pop_end(stroke_msg_t *msg, const char* label, stroke_end_t *end)
{
pop_string(msg, &end->address);
pop_string(msg, &end->subnet);
pop_string(msg, &end->sourceip);
pop_string(msg, &end->id);
pop_string(msg, &end->cert);
pop_string(msg, &end->ca);
pop_string(msg, &end->groups);
pop_string(msg, &end->updown);
DBG2(DBG_CFG, " %s=%s", label, end->address);
DBG2(DBG_CFG, " %ssubnet=%s", label, end->subnet);
DBG2(DBG_CFG, " %ssourceip=%s", label, end->sourceip);
DBG2(DBG_CFG, " %sid=%s", label, end->id);
DBG2(DBG_CFG, " %scert=%s", label, end->cert);
DBG2(DBG_CFG, " %sca=%s", label, end->ca);
DBG2(DBG_CFG, " %sgroups=%s", label, end->groups);
DBG2(DBG_CFG, " %supdown=%s", label, end->updown);
}
/**
* Add a connection to the configuration list
*/
static void stroke_add_conn(private_stroke_t *this,
stroke_msg_t *msg, FILE *out)
{
ike_cfg_t *ike_cfg;
peer_cfg_t *peer_cfg;
peer_cfg_t *mediated_by_cfg = NULL;
child_cfg_t *child_cfg;
auth_info_t *auth;
identification_t *my_id, *other_id;
identification_t *my_ca = NULL;
identification_t *other_ca = NULL;
identification_t *peer_id = NULL;
bool my_ca_same = FALSE;
bool other_ca_same =FALSE;
host_t *my_host = NULL, *other_host = NULL, *my_subnet, *other_subnet;
host_t *my_vip = NULL, *other_vip = NULL;
proposal_t *proposal;
traffic_selector_t *my_ts, *other_ts;
char *interface;
bool use_existing = FALSE;
enumerator_t *enumerator;
u_int32_t vendor;
pop_string(msg, &msg->add_conn.name);
DBG1(DBG_CFG, "received stroke: add connection '%s'", msg->add_conn.name);
DBG2(DBG_CFG, "conn %s", msg->add_conn.name);
pop_end(msg, "left", &msg->add_conn.me);
pop_end(msg, "right", &msg->add_conn.other);
pop_string(msg, &msg->add_conn.algorithms.ike);
pop_string(msg, &msg->add_conn.algorithms.esp);
DBG2(DBG_CFG, " ike=%s", msg->add_conn.algorithms.ike);
DBG2(DBG_CFG, " esp=%s", msg->add_conn.algorithms.esp);
pop_string(msg, &msg->add_conn.p2p.mediated_by);
pop_string(msg, &msg->add_conn.p2p.peerid);
DBG2(DBG_CFG, " p2p_mediation=%s", msg->add_conn.p2p.mediation ? "yes" : "no");
DBG2(DBG_CFG, " p2p_mediated_by=%s", msg->add_conn.p2p.mediated_by);
DBG2(DBG_CFG, " p2p_peerid=%s", msg->add_conn.p2p.peerid);
if (msg->add_conn.me.address)
{
my_host = host_create_from_string(msg->add_conn.me.address,
IKEV2_UDP_PORT);
}
if (my_host == NULL)
{
DBG1(DBG_CFG, "invalid host: %s\n", msg->add_conn.me.address);
return;
}
if (msg->add_conn.other.address)
{
other_host = host_create_from_string(msg->add_conn.other.address,
IKEV2_UDP_PORT);
}
if (other_host == NULL)
{
DBG1(DBG_CFG, "invalid host: %s\n", msg->add_conn.other.address);
my_host->destroy(my_host);
return;
}
interface = charon->kernel_interface->get_interface(charon->kernel_interface,
other_host);
if (interface)
{
stroke_end_t tmp_end;
host_t *tmp_host;
DBG2(DBG_CFG, "left is other host, swapping ends\n");
tmp_host = my_host;
my_host = other_host;
other_host = tmp_host;
tmp_end = msg->add_conn.me;
msg->add_conn.me = msg->add_conn.other;
msg->add_conn.other = tmp_end;
free(interface);
}
else
{
interface = charon->kernel_interface->get_interface(
charon->kernel_interface, my_host);
if (!interface)
{
DBG1(DBG_CFG, "left nor right host is our side, assuming left=local");
}
else
{
free(interface);
}
}
my_id = identification_create_from_string(msg->add_conn.me.id ?
msg->add_conn.me.id : msg->add_conn.me.address);
if (my_id == NULL)
{
DBG1(DBG_CFG, "invalid ID: %s\n", msg->add_conn.me.id);
goto destroy_hosts;
}
other_id = identification_create_from_string(msg->add_conn.other.id ?
msg->add_conn.other.id : msg->add_conn.other.address);
if (other_id == NULL)
{
DBG1(DBG_CFG, "invalid ID: %s\n", msg->add_conn.other.id);
my_id->destroy(my_id);
goto destroy_hosts;
}
#ifdef P2P
if (msg->add_conn.p2p.mediation && msg->add_conn.p2p.mediated_by)
{
DBG1(DBG_CFG, "a mediation connection cannot be a"
" mediated connection at the same time, aborting");
goto destroy_ids;
}
if (msg->add_conn.p2p.mediated_by)
{
mediated_by_cfg = charon->backends->get_peer_cfg_by_name(charon->backends,
msg->add_conn.p2p.mediated_by);
if (!mediated_by_cfg)
{
DBG1(DBG_CFG, "mediation connection '%s' not found, aborting",
msg->add_conn.p2p.mediated_by);
goto destroy_ids;
}
if (!mediated_by_cfg->is_mediation(mediated_by_cfg))
{
DBG1(DBG_CFG, "connection '%s' as referred to by '%s' is"
"no mediation connection, aborting",
msg->add_conn.p2p.mediated_by, msg->add_conn.name);
goto destroy_ids;
}
}
if (msg->add_conn.p2p.peerid)
{
peer_id = identification_create_from_string(msg->add_conn.p2p.peerid);
if (!peer_id)
{
DBG1(DBG_CFG, "invalid peer ID: %s\n", msg->add_conn.p2p.peerid);
goto destroy_ids;
}
}
else
{
/* no peer ID supplied, assume right ID */
peer_id = other_id->clone(other_id);
}
#endif /* P2P */
my_subnet = host_create_from_string(
msg->add_conn.me.subnet ? msg->add_conn.me.subnet
: msg->add_conn.me.address,
IKEV2_UDP_PORT);
if (my_subnet == NULL)
{
DBG1(DBG_CFG, "invalid subnet: %s\n", msg->add_conn.me.subnet);
goto destroy_ids;
}
other_subnet = host_create_from_string(
msg->add_conn.other.subnet ? msg->add_conn.other.subnet
: msg->add_conn.other.address,
IKEV2_UDP_PORT);
if (other_subnet == NULL)
{
DBG1(DBG_CFG, "invalid subnet: %s\n", msg->add_conn.me.subnet);
my_subnet->destroy(my_subnet);
goto destroy_ids;
}
if (msg->add_conn.me.virtual_ip && msg->add_conn.me.sourceip)
{
my_vip = host_create_from_string(msg->add_conn.me.sourceip, 0);
}
if (msg->add_conn.other.virtual_ip && msg->add_conn.other.sourceip)
{
other_vip = host_create_from_string(msg->add_conn.other.sourceip, 0);
}
if (msg->add_conn.me.tohost)
{
my_ts = traffic_selector_create_dynamic(msg->add_conn.me.protocol,
my_host->get_family(my_host) == AF_INET ?
TS_IPV4_ADDR_RANGE : TS_IPV6_ADDR_RANGE,
msg->add_conn.me.port ? msg->add_conn.me.port : 0,
msg->add_conn.me.port ? msg->add_conn.me.port : 65535);
}
else
{
my_ts = traffic_selector_create_from_subnet(my_subnet,
msg->add_conn.me.subnet ? msg->add_conn.me.subnet_mask : 0,
msg->add_conn.me.protocol, msg->add_conn.me.port);
}
my_subnet->destroy(my_subnet);
if (msg->add_conn.other.tohost)
{
other_ts = traffic_selector_create_dynamic(msg->add_conn.other.protocol,
other_host->get_family(other_host) == AF_INET ?
TS_IPV4_ADDR_RANGE : TS_IPV6_ADDR_RANGE,
msg->add_conn.other.port ? msg->add_conn.other.port : 0,
msg->add_conn.other.port ? msg->add_conn.other.port : 65535);
}
else
{
other_ts = traffic_selector_create_from_subnet(other_subnet,
msg->add_conn.other.subnet ? msg->add_conn.other.subnet_mask : 0,
msg->add_conn.other.protocol, msg->add_conn.other.port);
}
other_subnet->destroy(other_subnet);
if (msg->add_conn.me.ca)
{
if (streq(msg->add_conn.me.ca, "%same"))
{
my_ca_same = TRUE;
}
else
{
my_ca = identification_create_from_string(msg->add_conn.me.ca);
}
}
if (msg->add_conn.other.ca)
{
if (streq(msg->add_conn.other.ca, "%same"))
{
other_ca_same = TRUE;
}
else
{
other_ca = identification_create_from_string(msg->add_conn.other.ca);
}
}
if (msg->add_conn.me.cert)
{
load_peer_cert(this, msg->add_conn.me.cert, &my_id);
}
if (msg->add_conn.other.cert)
{
load_peer_cert(this, msg->add_conn.other.cert, &other_id);
}
if (other_ca_same && my_ca)
{
other_ca = my_ca->clone(my_ca);
}
else if (my_ca_same && other_ca)
{
my_ca = other_ca->clone(other_ca);
}
if (my_ca)
{
DBG2(DBG_CFG, " my ca: %D", my_ca);
}
if (other_ca)
{
DBG2(DBG_CFG, " other ca: %D", other_ca);
}
if (msg->add_conn.other.groups)
{
/* TODO: AC groups */
}
/* TODO: update matching */
/* have a look for an (almost) identical peer config to reuse */
enumerator = create_peer_cfg_enumerator(&this->configs, NULL, NULL);
while (enumerator->enumerate(enumerator, &peer_cfg))
{
host_t *my_vip_conf, *other_vip_conf;
bool my_vip_equals = FALSE, other_vip_equals = FALSE;
my_vip_conf = peer_cfg->get_my_virtual_ip(peer_cfg);
if ((my_vip && my_vip_conf && my_vip->equals(my_vip, my_vip_conf)) ||
(!my_vip_conf && !my_vip))
{
my_vip_equals = TRUE;
}
DESTROY_IF(my_vip_conf);
other_vip_conf = peer_cfg->get_other_virtual_ip(peer_cfg, NULL);
if ((other_vip && other_vip_conf && other_vip->equals(other_vip, other_vip_conf)) ||
(!other_vip_conf && !other_vip))
{
other_vip_equals = TRUE;
}
DESTROY_IF(other_vip_conf);
ike_cfg = peer_cfg->get_ike_cfg(peer_cfg);
if (my_id->equals(my_id, peer_cfg->get_my_id(peer_cfg))
&& other_id->equals(other_id, peer_cfg->get_other_id(peer_cfg))
&& my_host->equals(my_host, ike_cfg->get_my_host(ike_cfg))
&& other_host->equals(other_host, ike_cfg->get_other_host(ike_cfg))
&& peer_cfg->get_ike_version(peer_cfg) == (msg->add_conn.ikev2 ? 2 : 1)
&& peer_cfg->get_auth_method(peer_cfg) == msg->add_conn.auth_method
&& peer_cfg->get_eap_type(peer_cfg, &vendor) == msg->add_conn.eap_type
&& vendor == msg->add_conn.eap_vendor
&& my_vip_equals && other_vip_equals)
{
DBG1(DBG_CFG, "reusing existing configuration '%s'",
peer_cfg->get_name(peer_cfg));
use_existing = TRUE;
break;
}
}
enumerator->destroy(enumerator);
if (use_existing)
{
DESTROY_IF(my_vip);
DESTROY_IF(other_vip);
my_host->destroy(my_host);
my_id->destroy(my_id);
DESTROY_IF(my_ca);
other_host->destroy(other_host);
other_id->destroy(other_id);
DESTROY_IF(other_ca);
DESTROY_IF(peer_id);
DESTROY_IF(mediated_by_cfg);
}
else
{
ike_cfg = ike_cfg_create(msg->add_conn.other.sendcert != CERT_NEVER_SEND,
msg->add_conn.force_encap, my_host, other_host);
if (msg->add_conn.algorithms.ike)
{
char *proposal_string;
char *strict = msg->add_conn.algorithms.ike + strlen(msg->add_conn.algorithms.ike) - 1;
if (*strict == '!')
*strict = '\0';
else
strict = NULL;
while ((proposal_string = strsep(&msg->add_conn.algorithms.ike, ",")))
{
proposal = proposal_create_from_string(PROTO_IKE, proposal_string);
if (proposal == NULL)
{
DBG1(DBG_CFG, "invalid IKE proposal string: %s", proposal_string);
my_id->destroy(my_id);
other_id->destroy(other_id);
my_ts->destroy(my_ts);
other_ts->destroy(other_ts);
DESTROY_IF(my_ca);
DESTROY_IF(other_ca);
ike_cfg->destroy(ike_cfg);
return;
}
ike_cfg->add_proposal(ike_cfg, proposal);
}
if (!strict)
{
proposal = proposal_create_default(PROTO_IKE);
ike_cfg->add_proposal(ike_cfg, proposal);
}
}
else
{
proposal = proposal_create_default(PROTO_IKE);
ike_cfg->add_proposal(ike_cfg, proposal);
}
u_int32_t rekey = 0, reauth = 0, over, jitter;
cert_validation_t valid;
jitter = msg->add_conn.rekey.margin * msg->add_conn.rekey.fuzz / 100;
over = msg->add_conn.rekey.margin;
if (msg->add_conn.rekey.reauth)
{
reauth = msg->add_conn.rekey.ike_lifetime - over;
}
else
{
rekey = msg->add_conn.rekey.ike_lifetime - over;
}
peer_cfg = peer_cfg_create(msg->add_conn.name,
msg->add_conn.ikev2 ? 2 : 1, ike_cfg, my_id, other_id,
msg->add_conn.me.sendcert, msg->add_conn.auth_method,
msg->add_conn.eap_type, msg->add_conn.eap_vendor,
msg->add_conn.rekey.tries, rekey, reauth, jitter, over,
msg->add_conn.mobike,
msg->add_conn.dpd.delay, msg->add_conn.dpd.action, my_vip, other_vip,
msg->add_conn.p2p.mediation, mediated_by_cfg, peer_id);
auth = peer_cfg->get_auth(peer_cfg);
switch (msg->add_conn.crl_policy)
{
case CRL_STRICT_YES:
valid = VALIDATION_GOOD;
auth->add_item(auth, AUTHZ_CRL_VALIDATION, &valid);
break;
case CRL_STRICT_IFURI:
valid = VALIDATION_SKIPPED;
auth->add_item(auth, AUTHZ_CRL_VALIDATION, &valid);
break;
default:
break;
}
if (other_ca)
{
DBG1(DBG_CFG, " required other CA: %D", other_ca);
certificate_t *cert = charon->credentials->get_cert(charon->credentials,
CERT_X509, KEY_ANY, other_ca, TRUE);
if (!cert)
{
DBG1(DBG_CFG, "deleted connection '%s': "
"no trusted certificate found for required other CA",
msg->add_conn.name);
peer_cfg->destroy(peer_cfg);
other_ca->destroy(other_ca);
my_ts->destroy(my_ts);
other_ts->destroy(other_ts);
return;
}
/* require peer to authenticate against this cert */
auth->add_item(auth, AUTHZ_CA_CERT, cert);
cert->destroy(cert);
other_ca->destroy(other_ca);
}
if (my_ca)
{
certificate_t *cert = charon->credentials->get_cert(charon->credentials,
CERT_X509, KEY_ANY, my_ca, TRUE);
if (!cert)
{
DBG1(DBG_CFG, "deleted connection '%s': "
"no trusted certificate found for my CA",
msg->add_conn.name);
peer_cfg->destroy(peer_cfg);
my_ca->destroy(my_ca);
my_ts->destroy(my_ts);
other_ts->destroy(other_ts);
return;
}
/* we authenticate against this cert */
auth->add_item(auth, AUTHN_CA_CERT, cert);
cert->destroy(cert);
}
}
child_cfg = child_cfg_create(
msg->add_conn.name, msg->add_conn.rekey.ipsec_lifetime,
msg->add_conn.rekey.ipsec_lifetime - msg->add_conn.rekey.margin,
msg->add_conn.rekey.margin * msg->add_conn.rekey.fuzz / 100,
msg->add_conn.me.updown, msg->add_conn.me.hostaccess,
msg->add_conn.mode);
peer_cfg->add_child_cfg(peer_cfg, child_cfg);
child_cfg->add_traffic_selector(child_cfg, TRUE, my_ts);
child_cfg->add_traffic_selector(child_cfg, FALSE, other_ts);
if (msg->add_conn.algorithms.esp)
{
char *proposal_string;
char *strict = msg->add_conn.algorithms.esp + strlen(msg->add_conn.algorithms.esp) - 1;
if (*strict == '!')
*strict = '\0';
else
strict = NULL;
while ((proposal_string = strsep(&msg->add_conn.algorithms.esp, ",")))
{
proposal = proposal_create_from_string(PROTO_ESP, proposal_string);
if (proposal == NULL)
{
DBG1(DBG_CFG, "invalid ESP proposal string: %s", proposal_string);
peer_cfg->destroy(peer_cfg);
return;
}
child_cfg->add_proposal(child_cfg, proposal);
}
if (!strict)
{
proposal = proposal_create_default(PROTO_ESP);
child_cfg->add_proposal(child_cfg, proposal);
}
}
else
{
proposal = proposal_create_default(PROTO_ESP);
child_cfg->add_proposal(child_cfg, proposal);
}
if (!use_existing)
{
/* add config to backend */
this->configs.mutex->lock(this->configs.mutex);
this->configs.list->insert_last(this->configs.list, peer_cfg);
this->configs.mutex->unlock(this->configs.mutex);
DBG1(DBG_CFG, "added configuration '%s': %H[%D]...%H[%D]",
msg->add_conn.name, my_host, my_id, other_host, other_id);
}
return;
/* mopping up after parsing errors */
destroy_ids:
my_id->destroy(my_id);
other_id->destroy(other_id);
DESTROY_IF(mediated_by_cfg);
DESTROY_IF(peer_id);
destroy_hosts:
my_host->destroy(my_host);
other_host->destroy(other_host);
}
/**
* Delete a connection from the list
*/
static void stroke_del_conn(private_stroke_t *this, stroke_msg_t *msg, FILE *out)
{
enumerator_t *enumerator, *children;
peer_cfg_t *peer;
child_cfg_t *child;
pop_string(msg, &(msg->del_conn.name));
DBG1(DBG_CFG, "received stroke: delete connection '%s'", msg->del_conn.name);
this->configs.mutex->lock(this->configs.mutex);
enumerator = this->configs.list->create_enumerator(this->configs.list);
while (enumerator->enumerate(enumerator, (void**)&peer))
{
/* remove peer config with such a name */
if (streq(peer->get_name(peer), msg->del_conn.name))
{
this->configs.list->remove_at(this->configs.list, enumerator);
peer->destroy(peer);
continue;
}
/* remove any child with such a name */
children = peer->create_child_cfg_enumerator(peer);
while (children->enumerate(children, &child))
{
if (streq(child->get_name(child), msg->del_conn.name))
{
peer->remove_child_cfg(peer, enumerator);
child->destroy(child);
}
}
children->destroy(children);
}
enumerator->destroy(enumerator);
this->configs.mutex->unlock(this->configs.mutex);
fprintf(out, "deleted connection '%s'\n", msg->del_conn.name);
}
/**
* get the child_cfg with the same name as the peer cfg
*/
static child_cfg_t* get_child_from_peer(peer_cfg_t *peer_cfg, char *name)
{
child_cfg_t *current, *found = NULL;
enumerator_t *enumerator;
enumerator = peer_cfg->create_child_cfg_enumerator(peer_cfg);
while (enumerator->enumerate(enumerator, &current))
{
if (streq(current->get_name(current), name))
{
found = current;
found->get_ref(found);
break;
}
}
enumerator->destroy(enumerator);
return found;
}
/**
* logging to the stroke interface
*/
static bool stroke_log(stroke_log_info_t *info, signal_t signal, level_t level,
ike_sa_t *ike_sa, char *format, va_list args)
{
if (level <= info->level)
{
if (vfprintf(info->out, format, args) < 0 ||
fprintf(info->out, "\n") < 0 ||
fflush(info->out) != 0)
{
return FALSE;
}
}
return TRUE;
}
/**
* initiate a connection by name
*/
static void stroke_initiate(private_stroke_t *this, stroke_msg_t *msg, FILE *out)
{
peer_cfg_t *peer_cfg;
child_cfg_t *child_cfg;
stroke_log_info_t info;
pop_string(msg, &(msg->initiate.name));
DBG1(DBG_CFG, "received stroke: initiate '%s'", msg->initiate.name);
peer_cfg = charon->backends->get_peer_cfg_by_name(charon->backends,
msg->initiate.name);
if (peer_cfg == NULL)
{
fprintf(out, "no config named '%s'\n", msg->initiate.name);
return;
}
if (peer_cfg->get_ike_version(peer_cfg) != 2)
{
DBG1(DBG_CFG, "ignoring initiation request for IKEv%d config",
peer_cfg->get_ike_version(peer_cfg));
peer_cfg->destroy(peer_cfg);
return;
}
child_cfg = get_child_from_peer(peer_cfg, msg->initiate.name);
if (child_cfg == NULL)
{
fprintf(out, "no child config named '%s'\n", msg->initiate.name);
peer_cfg->destroy(peer_cfg);
return;
}
if (msg->output_verbosity < 0)
{
charon->controller->initiate(charon->controller, peer_cfg, child_cfg,
NULL, NULL);
}
else
{
info.out = out;
info.level = msg->output_verbosity;
charon->controller->initiate(charon->controller, peer_cfg, child_cfg,
(controller_cb_t)stroke_log, &info);
}
}
/**
* route a policy (install SPD entries)
*/
static void stroke_route(private_stroke_t *this, stroke_msg_t *msg, FILE *out)
{
peer_cfg_t *peer_cfg;
child_cfg_t *child_cfg;
stroke_log_info_t info;
pop_string(msg, &(msg->route.name));
DBG1(DBG_CFG, "received stroke: route '%s'", msg->route.name);
peer_cfg = charon->backends->get_peer_cfg_by_name(charon->backends,
msg->route.name);
if (peer_cfg == NULL)
{
fprintf(out, "no config named '%s'\n", msg->route.name);
return;
}
if (peer_cfg->get_ike_version(peer_cfg) != 2)
{
peer_cfg->destroy(peer_cfg);
return;
}
child_cfg = get_child_from_peer(peer_cfg, msg->route.name);
if (child_cfg == NULL)
{
fprintf(out, "no child config named '%s'\n", msg->route.name);
peer_cfg->destroy(peer_cfg);
return;
}
info.out = out;
info.level = msg->output_verbosity;
charon->controller->route(charon->controller, peer_cfg, child_cfg,
(controller_cb_t)stroke_log, &info);
peer_cfg->destroy(peer_cfg);
child_cfg->destroy(child_cfg);
}
/**
* unroute a policy
*/
static void stroke_unroute(private_stroke_t *this, stroke_msg_t *msg, FILE *out)
{
char *name;
ike_sa_t *ike_sa;
iterator_t *iterator;
stroke_log_info_t info;
pop_string(msg, &(msg->terminate.name));
name = msg->terminate.name;
info.out = out;
info.level = msg->output_verbosity;
iterator = charon->controller->create_ike_sa_iterator(charon->controller);
while (iterator->iterate(iterator, (void**)&ike_sa))
{
child_sa_t *child_sa;
iterator_t *children;
u_int32_t id;
children = ike_sa->create_child_sa_iterator(ike_sa);
while (children->iterate(children, (void**)&child_sa))
{
if (child_sa->get_state(child_sa) == CHILD_ROUTED &&
streq(name, child_sa->get_name(child_sa)))
{
id = child_sa->get_reqid(child_sa);
children->destroy(children);
iterator->destroy(iterator);
charon->controller->unroute(charon->controller, id,
(controller_cb_t)stroke_log, &info);
return;
}
}
children->destroy(children);
}
iterator->destroy(iterator);
DBG1(DBG_CFG, "no such SA found");
}
/**
* terminate a connection by name
*/
static void stroke_terminate(private_stroke_t *this, stroke_msg_t *msg, FILE *out)
{
char *string, *pos = NULL, *name = NULL;
u_int32_t id = 0;
bool child;
int len;
ike_sa_t *ike_sa;
iterator_t *iterator;
stroke_log_info_t info;
pop_string(msg, &(msg->terminate.name));
string = msg->terminate.name;
DBG1(DBG_CFG, "received stroke: terminate '%s'", string);
len = strlen(string);
if (len < 1)
{
DBG1(DBG_CFG, "error parsing string");
return;
}
switch (string[len-1])
{
case '}':
child = TRUE;
pos = strchr(string, '{');
break;
case ']':
child = FALSE;
pos = strchr(string, '[');
break;
default:
name = string;
child = FALSE;
break;
}
if (name)
{
/* is a single name */
}
else if (pos == string + len - 2)
{ /* is name[] or name{} */
string[len-2] = '\0';
name = string;
}
else
{ /* is name[123] or name{23} */
string[len-1] = '\0';
id = atoi(pos + 1);
if (id == 0)
{
DBG1(DBG_CFG, "error parsing string");
return;
}
}
info.out = out;
info.level = msg->output_verbosity;
iterator = charon->controller->create_ike_sa_iterator(charon->controller);
while (iterator->iterate(iterator, (void**)&ike_sa))
{
child_sa_t *child_sa;
iterator_t *children;
if (child)
{
children = ike_sa->create_child_sa_iterator(ike_sa);
while (children->iterate(children, (void**)&child_sa))
{
if ((name && streq(name, child_sa->get_name(child_sa))) ||
(id && id == child_sa->get_reqid(child_sa)))
{
id = child_sa->get_reqid(child_sa);
children->destroy(children);
iterator->destroy(iterator);
charon->controller->terminate_child(charon->controller, id,
(controller_cb_t)stroke_log, &info);
return;
}
}
children->destroy(children);
}
else if ((name && streq(name, ike_sa->get_name(ike_sa))) ||
(id && id == ike_sa->get_unique_id(ike_sa)))
{
id = ike_sa->get_unique_id(ike_sa);
/* unlock manager first */
iterator->destroy(iterator);
charon->controller->terminate_ike(charon->controller, id,
(controller_cb_t)stroke_log, &info);
return;
}
}
iterator->destroy(iterator);
DBG1(DBG_CFG, "no such SA found");
}
/**
* Add a ca information record to the cainfo list
*/
static void stroke_add_ca(private_stroke_t *this,
stroke_msg_t *msg, FILE *out)
{
certificate_t *cert;
ca_section_t *ca;
pop_string(msg, &msg->add_ca.name);
pop_string(msg, &msg->add_ca.cacert);
pop_string(msg, &msg->add_ca.crluri);
pop_string(msg, &msg->add_ca.crluri2);
pop_string(msg, &msg->add_ca.ocspuri);
pop_string(msg, &msg->add_ca.ocspuri2);
DBG1(DBG_CFG, "received stroke: add ca '%s'", msg->add_ca.name);
DBG2(DBG_CFG, "ca %s", msg->add_ca.name);
DBG2(DBG_CFG, " cacert=%s", msg->add_ca.cacert);
DBG2(DBG_CFG, " crluri=%s", msg->add_ca.crluri);
DBG2(DBG_CFG, " crluri2=%s", msg->add_ca.crluri2);
DBG2(DBG_CFG, " ocspuri=%s", msg->add_ca.ocspuri);
DBG2(DBG_CFG, " ocspuri2=%s", msg->add_ca.ocspuri2);
if (msg->add_ca.cacert == NULL)
{
DBG1(DBG_CFG, "missing cacert parameter");
return;
}
cert = load_ca_cert(this, msg->add_ca.cacert);
if (cert)
{
ca = ca_section_create(msg->add_ca.name, cert);
if (msg->add_ca.crluri)
{
ca->crl->insert_last(ca->crl, strdup(msg->add_ca.crluri));
}
if (msg->add_ca.crluri2)
{
ca->crl->insert_last(ca->crl, strdup(msg->add_ca.crluri2));
}
if (msg->add_ca.ocspuri)
{
ca->ocsp->insert_last(ca->ocsp, strdup(msg->add_ca.ocspuri));
}
if (msg->add_ca.ocspuri2)
{
ca->ocsp->insert_last(ca->ocsp, strdup(msg->add_ca.ocspuri2));
}
this->ca_creds.mutex->lock(this->ca_creds.mutex);
this->ca_creds.sections->insert_last(this->ca_creds.sections, ca);
this->ca_creds.mutex->unlock(this->ca_creds.mutex);
DBG1(DBG_CFG, "added ca '%s'", msg->add_ca.name);
}
}
/**
* Delete a ca information record from the cainfo list
*/
static void stroke_del_ca(private_stroke_t *this,
stroke_msg_t *msg, FILE *out)
{
enumerator_t *enumerator;
ca_section_t *ca = NULL;
pop_string(msg, &(msg->del_ca.name));
DBG1(DBG_CFG, "received stroke: delete ca '%s'", msg->del_ca.name);
this->ca_creds.mutex->lock(this->ca_creds.mutex);
enumerator = this->ca_creds.sections->create_enumerator(this->ca_creds.sections);
while (enumerator->enumerate(enumerator, &ca))
{
if (streq(ca->name, msg->del_ca.name))
{
this->ca_creds.sections->remove_at(this->ca_creds.sections, enumerator);
break;
}
ca = NULL;
}
enumerator->destroy(enumerator);
this->ca_creds.mutex->unlock(this->ca_creds.mutex);
if (ca == NULL)
{
fprintf(out, "no ca named '%s' found\n", msg->del_ca.name);
return;
}
ca_section_destroy(ca);
/* TODO: flush cached certs */
}
/**
* log an IKE_SA to out
*/
static void log_ike_sa(FILE *out, ike_sa_t *ike_sa, bool all)
{
ike_sa_id_t *id = ike_sa->get_id(ike_sa);
u_int32_t rekey, reauth;
fprintf(out, "%12s[%d]: %N, %H[%D]...%H[%D]\n",
ike_sa->get_name(ike_sa), ike_sa->get_unique_id(ike_sa),
ike_sa_state_names, ike_sa->get_state(ike_sa),
ike_sa->get_my_host(ike_sa), ike_sa->get_my_id(ike_sa),
ike_sa->get_other_host(ike_sa), ike_sa->get_other_id(ike_sa));
if (all)
{
fprintf(out, "%12s[%d]: IKE SPIs: %.16llx_i%s %.16llx_r%s",
ike_sa->get_name(ike_sa), ike_sa->get_unique_id(ike_sa),
id->get_initiator_spi(id), id->is_initiator(id) ? "*" : "",
id->get_responder_spi(id), id->is_initiator(id) ? "" : "*");
rekey = ike_sa->get_statistic(ike_sa, STAT_REKEY_TIME);
reauth = ike_sa->get_statistic(ike_sa, STAT_REAUTH_TIME);
if (rekey)
{
fprintf(out, ", rekeying in %V", &rekey);
}
if (reauth)
{
fprintf(out, ", reauthentication in %V", &reauth);
}
if (!rekey && !reauth)
{
fprintf(out, ", rekeying disabled");
}
fprintf(out, "\n");
}
}
/**
* log an CHILD_SA to out
*/
static void log_child_sa(FILE *out, child_sa_t *child_sa, bool all)
{
u_int32_t rekey, now = time(NULL);
u_int32_t use_in, use_out, use_fwd;
encryption_algorithm_t encr_alg;
integrity_algorithm_t int_alg;
size_t encr_len, int_len;
mode_t mode;
child_sa->get_stats(child_sa, &mode, &encr_alg, &encr_len,
&int_alg, &int_len, &rekey, &use_in, &use_out,
&use_fwd);
fprintf(out, "%12s{%d}: %N, %N",
child_sa->get_name(child_sa), child_sa->get_reqid(child_sa),
child_sa_state_names, child_sa->get_state(child_sa),
mode_names, mode);
if (child_sa->get_state(child_sa) == CHILD_INSTALLED)
{
fprintf(out, ", %N SPIs: %.8x_i %.8x_o",
protocol_id_names, child_sa->get_protocol(child_sa),
htonl(child_sa->get_spi(child_sa, TRUE)),
htonl(child_sa->get_spi(child_sa, FALSE)));
if (all)
{
fprintf(out, "\n%12s{%d}: ", child_sa->get_name(child_sa),
child_sa->get_reqid(child_sa));
if (child_sa->get_protocol(child_sa) == PROTO_ESP)
{
fprintf(out, "%N", encryption_algorithm_names, encr_alg);
if (encr_len)
{
fprintf(out, "-%d", encr_len);
}
fprintf(out, "/");
}
fprintf(out, "%N", integrity_algorithm_names, int_alg);
if (int_len)
{
fprintf(out, "-%d", int_len);
}
fprintf(out, ", rekeying ");
if (rekey)
{
fprintf(out, "in %#V", &now, &rekey);
}
else
{
fprintf(out, "disabled");
}
fprintf(out, ", last use: ");
use_in = max(use_in, use_fwd);
if (use_in)
{
fprintf(out, "%ds_i ", now - use_in);
}
else
{
fprintf(out, "no_i ");
}
if (use_out)
{
fprintf(out, "%ds_o ", now - use_out);
}
else
{
fprintf(out, "no_o ");
}
}
}
fprintf(out, "\n%12s{%d}: %#R=== %#R\n",
child_sa->get_name(child_sa), child_sa->get_reqid(child_sa),
child_sa->get_traffic_selectors(child_sa, TRUE),
child_sa->get_traffic_selectors(child_sa, FALSE));
}
/**
* show status of daemon
*/
static void stroke_status(private_stroke_t *this, stroke_msg_t *msg, FILE *out,
bool all)
{
enumerator_t *enumerator, *children;
iterator_t *iterator;
host_t *host;
peer_cfg_t *peer_cfg;
ike_cfg_t *ike_cfg;
child_cfg_t *child_cfg;
ike_sa_t *ike_sa;
char *name = NULL;
if (msg->status.name)
{
pop_string(msg, &(msg->status.name));
name = msg->status.name;
}
if (all)
{
fprintf(out, "Performance:\n");
fprintf(out, " worker threads: %d idle of %d,",
charon->processor->get_idle_threads(charon->processor),
charon->processor->get_total_threads(charon->processor));
fprintf(out, " job queue load: %d,",
charon->processor->get_job_load(charon->processor));
fprintf(out, " scheduled events: %d\n",
charon->scheduler->get_job_load(charon->scheduler));
iterator = charon->kernel_interface->create_address_iterator(
charon->kernel_interface);
fprintf(out, "Listening IP addresses:\n");
while (iterator->iterate(iterator, (void**)&host))
{
fprintf(out, " %H\n", host);
}
iterator->destroy(iterator);
fprintf(out, "Connections:\n");
enumerator = charon->backends->create_peer_cfg_enumerator(charon->backends);
while (enumerator->enumerate(enumerator, (void**)&peer_cfg))
{
if (peer_cfg->get_ike_version(peer_cfg) != 2 ||
(name && !streq(name, peer_cfg->get_name(peer_cfg))))
{
continue;
}
ike_cfg = peer_cfg->get_ike_cfg(peer_cfg);
fprintf(out, "%12s: %H[%D]...%H[%D]\n", peer_cfg->get_name(peer_cfg),
ike_cfg->get_my_host(ike_cfg), peer_cfg->get_my_id(peer_cfg),
ike_cfg->get_other_host(ike_cfg), peer_cfg->get_other_id(peer_cfg));
/* TODO: list CAs and groups */
children = peer_cfg->create_child_cfg_enumerator(peer_cfg);
while (children->enumerate(children, &child_cfg))
{
linked_list_t *my_ts, *other_ts;
my_ts = child_cfg->get_traffic_selectors(child_cfg, TRUE, NULL, NULL);
other_ts = child_cfg->get_traffic_selectors(child_cfg, FALSE, NULL, NULL);
fprintf(out, "%12s: %#R=== %#R\n", child_cfg->get_name(child_cfg),
my_ts, other_ts);
my_ts->destroy_offset(my_ts, offsetof(traffic_selector_t, destroy));
other_ts->destroy_offset(other_ts, offsetof(traffic_selector_t, destroy));
}
children->destroy(children);
}
enumerator->destroy(enumerator);
}
iterator = charon->ike_sa_manager->create_iterator(charon->ike_sa_manager);
if (all && iterator->get_count(iterator) > 0)
{
fprintf(out, "Security Associations:\n");
}
while (iterator->iterate(iterator, (void**)&ike_sa))
{
bool ike_printed = FALSE;
child_sa_t *child_sa;
iterator_t *children = ike_sa->create_child_sa_iterator(ike_sa);
if (name == NULL || streq(name, ike_sa->get_name(ike_sa)))
{
log_ike_sa(out, ike_sa, all);
ike_printed = TRUE;
}
while (children->iterate(children, (void**)&child_sa))
{
if (name == NULL || streq(name, child_sa->get_name(child_sa)))
{
if (!ike_printed)
{
log_ike_sa(out, ike_sa, all);
ike_printed = TRUE;
}
log_child_sa(out, child_sa, all);
}
}
children->destroy(children);
}
iterator->destroy(iterator);
}
/**
* list all X.509 certificates matching the flags
*/
static void stroke_list_certs(char *label, x509_flag_t flags, bool utc, FILE *out)
{
bool first = TRUE;
time_t now = time(NULL);
certificate_t *cert;
enumerator_t *enumerator;
enumerator = charon->credentials->create_cert_enumerator(
charon->credentials, CERT_X509, KEY_ANY, NULL, FALSE);
while (enumerator->enumerate(enumerator, (void**)&cert))
{
x509_t *x509 = (x509_t*)cert;
x509_flag_t x509_flags = x509->get_flags(x509);
/* list only if flag is set, or flags == 0 (ignoring self-signed) */
if ((x509_flags & flags) || (flags == (x509_flags & ~X509_SELF_SIGNED)))
{
enumerator_t *enumerator;
identification_t *altName;
bool first_altName = TRUE;
chunk_t serial = x509->get_serial(x509);
identification_t *authkey = x509->get_authKeyIdentifier(x509);
time_t notBefore, notAfter;
public_key_t *public = cert->get_public_key(cert);
if (first)
{
fprintf(out, "\n");
fprintf(out, "List of %s:\n", label);
first = FALSE;
}
fprintf(out, "\n");
/* list subjectAltNames */
enumerator = x509->create_subjectAltName_enumerator(x509);
while (enumerator->enumerate(enumerator, (void**)&altName))
{
if (first_altName)
{
fprintf(out, " altNames: ");
first_altName = FALSE;
}
else
{
fprintf(out, ", ");
}
fprintf(out, "%D", altName);
}
if (!first_altName)
{
fprintf(out, "\n");
}
enumerator->destroy(enumerator);
fprintf(out, " subject: %D\n", cert->get_subject(cert));
fprintf(out, " issuer: %D\n", cert->get_issuer(cert));
fprintf(out, " serial: %#B\n", &serial);
/* list validity */
cert->get_validity(cert, &now, &notBefore, &notAfter);
fprintf(out, " validity: not before %#T, ", &notBefore, utc);
if (now < notBefore)
{
fprintf(out, "not valid yet (valid in %#V)\n", &now, &notBefore);
}
else
{
fprintf(out, "ok\n");
}
fprintf(out, " not after %#T, ", &notAfter, utc);
if (now > notAfter)
{
fprintf(out, "expired (%#V ago)\n", &now, &notAfter);
}
else
{
fprintf(out, "ok");
if (now > notAfter - CERT_WARNING_INTERVAL * 60 * 60 * 24)
{
fprintf(out, " (expires in %#V)", &now, &notAfter);
}
fprintf(out, " \n");
}
/* list public key information */
if (public)
{
private_key_t *private = NULL;
identification_t *id, *keyid;
id = public->get_id(public, ID_PUBKEY_SHA1);
keyid = public->get_id(public, ID_PUBKEY_INFO_SHA1);
private = charon->credentials->get_private(
charon->credentials,
public->get_type(public), keyid, NULL);
fprintf(out, " pubkey: %N %d bits%s\n",
key_type_names, public->get_type(public),
public->get_keysize(public) * 8,
private ? ", has private key" : "");
fprintf(out, " keyid: %D\n", keyid);
fprintf(out, " subjkey: %D\n", id);
DESTROY_IF(private);
public->destroy(public);
}
/* list optional authorityKeyIdentifier */
if (authkey)
{
fprintf(out, " authkey: %D\n", authkey);
}
}
}
enumerator->destroy(enumerator);
}
/**
* list all X.509 CRLs
*/
static void stroke_list_crls(bool utc, FILE *out)
{
bool first = TRUE;
time_t thisUpdate, nextUpdate, now = time(NULL);
certificate_t *cert;
enumerator_t *enumerator;
enumerator = charon->credentials->create_cert_enumerator(
charon->credentials, CERT_X509_CRL, KEY_ANY, NULL, FALSE);
while (enumerator->enumerate(enumerator, (void**)&cert))
{
crl_t *crl = (crl_t*)cert;
chunk_t serial = crl->get_serial(crl);
identification_t *authkey = crl->get_authKeyIdentifier(crl);
if (first)
{
fprintf(out, "\n");
fprintf(out, "List of X.509 CRLs:\n");
first = FALSE;
}
fprintf(out, "\n");
fprintf(out, " issuer: %D\n", cert->get_issuer(cert));
/* list optional crlNumber */
if (serial.ptr)
{
fprintf(out, " serial: %#B\n", &serial);
}
/* count the number of revoked certificates */
{
int count = 0;
enumerator_t *enumerator = crl->create_enumerator(crl);
while (enumerator->enumerate(enumerator, NULL, NULL, NULL))
{
count++;
}
fprintf(out, " revoked: %d certificate%s\n", count,
(count == 1)? "" : "s");
enumerator->destroy(enumerator);
}
/* list validity */
cert->get_validity(cert, &now, &thisUpdate, &nextUpdate);
fprintf(out, " updates: this %#T\n", &thisUpdate, utc);
fprintf(out, " next %#T, ", &nextUpdate, utc);
if (now > nextUpdate)
{
fprintf(out, "expired (%#V ago)\n", &now, &nextUpdate);
}
else
{
fprintf(out, "ok");
if (now > nextUpdate - CRL_WARNING_INTERVAL * 60 * 60 * 24)
{
fprintf(out, " (expires in %#V)", &now, &nextUpdate);
}
fprintf(out, " \n");
}
/* list optional authorityKeyIdentifier */
if (authkey)
{
fprintf(out, " authkey: %D\n", authkey);
}
}
enumerator->destroy(enumerator);
}
/**
* list all CA information sections
*/
static void stroke_list_cainfos(private_stroke_t *this, FILE *out)
{
bool first = TRUE;
ca_section_t *section;
enumerator_t *enumerator;
this->ca_creds.mutex->lock(this->ca_creds.mutex);
enumerator = this->ca_creds.sections->create_enumerator(this->ca_creds.sections);
while (enumerator->enumerate(enumerator, (void**)&section))
{
certificate_t *cert = section->cert;
public_key_t *public = cert->get_public_key(cert);
if (first)
{
fprintf(out, "\n");
fprintf(out, "List of CA Information Sections:\n");
first = FALSE;
}
fprintf(out, "\n");
fprintf(out, " authname: %D\n", cert->get_subject(cert));
/* list authkey and keyid */
if (public)
{
fprintf(out, " authkey: %D\n",
public->get_id(public, ID_PUBKEY_SHA1));
fprintf(out, " keyid: %D\n",
public->get_id(public, ID_PUBKEY_INFO_SHA1));
public->destroy(public);
}
/* list CRL URIs */
{
bool first = TRUE;
char *crluri;
enumerator_t *enumerator;
enumerator = section->crl->create_enumerator(section->crl);
while (enumerator->enumerate(enumerator, (void**)&crluri))
{
if (first)
{
fprintf(out, " crluris: ");
first = FALSE;
}
else
{
fprintf(out, " ");
}
fprintf(out, "'%s'\n", crluri);
}
enumerator->destroy(enumerator);
}
/* list OCSP URIs */
{
bool first = TRUE;
char *ocspuri;
enumerator_t *enumerator;
enumerator = section->ocsp->create_enumerator(section->ocsp);
while (enumerator->enumerate(enumerator, (void**)&ocspuri))
{
if (first)
{
fprintf(out, " ocspuris: ");
first = FALSE;
}
else
{
fprintf(out, " ");
}
fprintf(out, "'%s'\n", ocspuri);
}
enumerator->destroy(enumerator);
}
}
enumerator->destroy(enumerator);
this->ca_creds.mutex->unlock(this->ca_creds.mutex);
}
/**
* list various information
*/
static void stroke_list(private_stroke_t *this, stroke_msg_t *msg, FILE *out)
{
if (msg->list.flags & LIST_CERTS)
{
stroke_list_certs("X.509 End Entity Certificates",
0, msg->list.utc, out);
}
if (msg->list.flags & LIST_CACERTS)
{
stroke_list_certs("X.509 CA Certificates",
X509_CA, msg->list.utc, out);
}
if (msg->list.flags & LIST_OCSPCERTS)
{
stroke_list_certs("X.509 OCSP Signer Certificates",
X509_OCSP_SIGNER, msg->list.utc, out);
}
if (msg->list.flags & LIST_AACERTS)
{
stroke_list_certs("X.509 AA Certificates",
X509_AA, msg->list.utc, out);
}
if (msg->list.flags & LIST_ACERTS)
{
}
if (msg->list.flags & LIST_CAINFOS)
{
stroke_list_cainfos(this, out);
}
if (msg->list.flags & LIST_CRLS)
{
stroke_list_crls(msg->list.utc, out);
}
if (msg->list.flags & LIST_OCSP)
{
}
}
/**
* reread various information
*/
static void stroke_reread(private_stroke_t *this,
stroke_msg_t *msg, FILE *out)
{
if (msg->reread.flags & REREAD_SECRETS)
{
DBG1(DBG_CFG, "rereading secrets");
load_secrets(this);
}
if (msg->reread.flags & REREAD_CACERTS)
{
DBG1(DBG_CFG, "rereading CA certificates from '%s'",
CA_CERTIFICATE_DIR);
load_certdir(this, CA_CERTIFICATE_DIR, CERT_X509, X509_CA);
}
if (msg->reread.flags & REREAD_OCSPCERTS)
{
DBG1(DBG_CFG, "rereading OCSP signer certificates from '%s'",
OCSP_CERTIFICATE_DIR);
load_certdir(this, OCSP_CERTIFICATE_DIR, CERT_X509,
X509_OCSP_SIGNER);
}
if (msg->reread.flags & REREAD_AACERTS)
{
DBG1(DBG_CFG, "rereading AA certificates from '%s'",
AA_CERTIFICATE_DIR);
load_certdir(this, AA_CERTIFICATE_DIR, CERT_X509, X509_AA);
}
if (msg->reread.flags & REREAD_ACERTS)
{
DBG1(DBG_CFG, "rereading attribute certificates from '%s'",
ATTR_CERTIFICATE_DIR);
load_certdir(this, ATTR_CERTIFICATE_DIR, CERT_X509_AC, 0);
}
if (msg->reread.flags & REREAD_CRLS)
{
DBG1(DBG_CFG, "rereading CRLs from '%s'",
CRL_DIR);
load_certdir(this, CRL_DIR, CERT_X509_CRL, 0);
}
}
/**
* purge various information
*/
static void stroke_purge(private_stroke_t *this, stroke_msg_t *msg, FILE *out)
{
/* TODO: flush cache */
}
signal_t get_signal_from_logtype(char *type)
{
if (strcasecmp(type, "any") == 0) return SIG_ANY;
else if (strcasecmp(type, "mgr") == 0) return DBG_MGR;
else if (strcasecmp(type, "ike") == 0) return DBG_IKE;
else if (strcasecmp(type, "chd") == 0) return DBG_CHD;
else if (strcasecmp(type, "job") == 0) return DBG_JOB;
else if (strcasecmp(type, "cfg") == 0) return DBG_CFG;
else if (strcasecmp(type, "knl") == 0) return DBG_KNL;
else if (strcasecmp(type, "net") == 0) return DBG_NET;
else if (strcasecmp(type, "enc") == 0) return DBG_ENC;
else if (strcasecmp(type, "lib") == 0) return DBG_LIB;
else return -1;
}
/**
* set the verbosity debug output
*/
static void stroke_loglevel(private_stroke_t *this, stroke_msg_t *msg, FILE *out)
{
signal_t signal;
pop_string(msg, &(msg->loglevel.type));
DBG1(DBG_CFG, "received stroke: loglevel %d for %s",
msg->loglevel.level, msg->loglevel.type);
signal = get_signal_from_logtype(msg->loglevel.type);
if (signal < 0)
{
fprintf(out, "invalid type (%s)!\n", msg->loglevel.type);
return;
}
charon->outlog->set_level(charon->outlog, signal, msg->loglevel.level);
charon->syslog->set_level(charon->syslog, signal, msg->loglevel.level);
}
typedef struct stroke_job_context_t stroke_job_context_t;
/** job context to pass to processing thread */
struct stroke_job_context_t {
/** file descriptor to read from */
int fd;
/** global stroke interface */
private_stroke_t *this;
};
/**
* destroy a job context
*/
static void stroke_job_context_destroy(stroke_job_context_t *this)
{
close(this->fd);
free(this);
}
/**
* process a stroke request from the socket pointed by "fd"
*/
static job_requeue_t stroke_process(stroke_job_context_t *ctx)
{
stroke_msg_t *msg;
u_int16_t msg_length;
ssize_t bytes_read;
FILE *out;
private_stroke_t *this = ctx->this;
int strokefd = ctx->fd;
/* peek the length */
bytes_read = recv(strokefd, &msg_length, sizeof(msg_length), MSG_PEEK);
if (bytes_read != sizeof(msg_length))
{
DBG1(DBG_CFG, "reading length of stroke message failed: %s",
strerror(errno));
close(strokefd);
return JOB_REQUEUE_NONE;
}
/* read message */
msg = malloc(msg_length);
bytes_read = recv(strokefd, msg, msg_length, 0);
if (bytes_read != msg_length)
{
DBG1(DBG_CFG, "reading stroke message failed: %s", strerror(errno));
close(strokefd);
return JOB_REQUEUE_NONE;
}
out = fdopen(strokefd, "w");
if (out == NULL)
{
DBG1(DBG_CFG, "opening stroke output channel failed: %s", strerror(errno));
close(strokefd);
free(msg);
return JOB_REQUEUE_NONE;
}
DBG3(DBG_CFG, "stroke message %b", (void*)msg, msg_length);
/* the stroke_* functions are blocking, as they listen on the bus. Add
* cancellation handlers. */
pthread_cleanup_push((void*)fclose, out);
pthread_cleanup_push(free, msg);
switch (msg->type)
{
case STR_INITIATE:
stroke_initiate(this, msg, out);
break;
case STR_ROUTE:
stroke_route(this, msg, out);
break;
case STR_UNROUTE:
stroke_unroute(this, msg, out);
break;
case STR_TERMINATE:
stroke_terminate(this, msg, out);
break;
case STR_STATUS:
stroke_status(this, msg, out, FALSE);
break;
case STR_STATUS_ALL:
stroke_status(this, msg, out, TRUE);
break;
case STR_ADD_CONN:
stroke_add_conn(this, msg, out);
break;
case STR_DEL_CONN:
stroke_del_conn(this, msg, out);
break;
case STR_ADD_CA:
stroke_add_ca(this, msg, out);
break;
case STR_DEL_CA:
stroke_del_ca(this, msg, out);
break;
case STR_LOGLEVEL:
stroke_loglevel(this, msg, out);
break;
case STR_LIST:
stroke_list(this, msg, out);
break;
case STR_REREAD:
stroke_reread(this, msg, out);
break;
case STR_PURGE:
stroke_purge(this, msg, out);
break;
default:
DBG1(DBG_CFG, "received unknown stroke");
}
/* remove and execute cancellation handlers */
pthread_cleanup_pop(1);
pthread_cleanup_pop(1);
return JOB_REQUEUE_NONE;
}
/**
* Implementation of private_stroke_t.stroke_receive.
*/
static job_requeue_t stroke_receive(private_stroke_t *this)
{
struct sockaddr_un strokeaddr;
int strokeaddrlen = sizeof(strokeaddr);
int strokefd;
int oldstate;
callback_job_t *job;
stroke_job_context_t *ctx;
pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, &oldstate);
strokefd = accept(this->socket, (struct sockaddr *)&strokeaddr, &strokeaddrlen);
pthread_setcancelstate(oldstate, NULL);
if (strokefd < 0)
{
DBG1(DBG_CFG, "accepting stroke connection failed: %s", strerror(errno));
return JOB_REQUEUE_FAIR;
}
ctx = malloc_thing(stroke_job_context_t);
ctx->fd = strokefd;
ctx->this = this;
job = callback_job_create((callback_job_cb_t)stroke_process,
ctx, (void*)stroke_job_context_destroy, this->job);
charon->processor->queue_job(charon->processor, (job_t*)job);
return JOB_REQUEUE_FAIR;
}
/**
* Implementation of interface_t.destroy.
*/
static void destroy(private_stroke_t *this)
{
this->job->cancel(this->job);
charon->credentials->remove_set(charon->credentials, &this->ca_creds.set);
charon->credentials->remove_set(charon->credentials, &this->creds.set);
charon->backends->remove_backend(charon->backends, &this->configs.backend);
this->ca_creds.sections->destroy_function(this->ca_creds.sections, (void*)ca_section_destroy);
this->ca_creds.mutex->destroy(this->ca_creds.mutex);
this->creds.certs->destroy_offset(this->creds.certs, offsetof(certificate_t, destroy));
this->creds.shared->destroy_offset(this->creds.shared, offsetof(shared_key_t, destroy));
this->creds.private->destroy_offset(this->creds.private, offsetof(private_key_t, destroy));
this->creds.mutex->destroy(this->creds.mutex);
this->configs.list->destroy_offset(this->configs.list, offsetof(peer_cfg_t, destroy));
this->configs.mutex->destroy(this->configs.mutex);
free(this);
}
/**
* initialize and open stroke socket
*/
static bool open_socket(private_stroke_t *this)
{
struct sockaddr_un socket_addr = { AF_UNIX, STROKE_SOCKET};
mode_t old;
/* set up unix socket */
this->socket = socket(AF_UNIX, SOCK_STREAM, 0);
if (this->socket == -1)
{
DBG1(DBG_CFG, "could not create stroke socket");
return FALSE;
}
unlink(socket_addr.sun_path);
old = umask(~(S_IRWXU | S_IRWXG));
if (bind(this->socket, (struct sockaddr *)&socket_addr, sizeof(socket_addr)) < 0)
{
DBG1(DBG_CFG, "could not bind stroke socket: %s", strerror(errno));
close(this->socket);
return FALSE;
}
umask(old);
if (chown(socket_addr.sun_path, IPSEC_UID, IPSEC_GID) != 0)
{
DBG1(DBG_CFG, "changing stroke socket permissions failed: %s",
strerror(errno));
}
if (listen(this->socket, 0) < 0)
{
DBG1(DBG_CFG, "could not listen on stroke socket: %s", strerror(errno));
close(this->socket);
unlink(socket_addr.sun_path);
return FALSE;
}
return TRUE;
}
/**
* load all certificates from ipsec.d
*/
static void load_certs(private_stroke_t *this)
{
DBG1(DBG_CFG, "loading CA certificates from '%s'",
CA_CERTIFICATE_DIR);
load_certdir(this, CA_CERTIFICATE_DIR, CERT_X509, X509_CA);
DBG1(DBG_CFG, "loading AA certificates from '%s'",
AA_CERTIFICATE_DIR);
load_certdir(this, AA_CERTIFICATE_DIR, CERT_X509, X509_AA);
DBG1(DBG_CFG, "loading OCSP signer certificates from '%s'",
OCSP_CERTIFICATE_DIR);
load_certdir(this, OCSP_CERTIFICATE_DIR, CERT_X509, X509_OCSP_SIGNER);
DBG1(DBG_CFG, "loading attribute certificates from '%s'",
ATTR_CERTIFICATE_DIR);
load_certdir(this, ATTR_CERTIFICATE_DIR, CERT_X509_AC, 0);
DBG1(DBG_CFG, "loading CRLs from '%s'",
CRL_DIR);
load_certdir(this, CRL_DIR, CERT_X509_CRL, 0);
}
/*
* Described in header-file
*/
plugin_t *plugin_create()
{
private_stroke_t *this = malloc_thing(private_stroke_t);
/* public functions */
this->public.plugin.destroy = (void (*)(plugin_t*))destroy;
if (!open_socket(this))
{
free(this);
return NULL;
}
this->ca_creds.sections = linked_list_create();
this->ca_creds.mutex = mutex_create(MUTEX_RECURSIVE);
this->creds.certs = linked_list_create();
this->creds.shared = linked_list_create();
this->creds.private = linked_list_create();
this->creds.mutex = mutex_create(MUTEX_RECURSIVE);
this->configs.list = linked_list_create();
this->configs.mutex = mutex_create(MUTEX_RECURSIVE);
this->ca_creds.set.create_private_enumerator = (void*)return_null;
this->ca_creds.set.create_cert_enumerator = (void*)return_null;
this->ca_creds.set.create_shared_enumerator = (void*)return_null;
this->ca_creds.set.create_cdp_enumerator = (void*)create_cdp_enumerator;
charon->credentials->add_set(charon->credentials, &this->ca_creds.set);
this->creds.set.create_private_enumerator = (void*)create_private_enumerator;
this->creds.set.create_cert_enumerator = (void*)create_cert_enumerator;
this->creds.set.create_shared_enumerator = (void*)create_shared_enumerator;
this->creds.set.create_cdp_enumerator = (void*)return_null;
charon->credentials->add_set(charon->credentials, &this->creds.set);
load_certs(this);
load_secrets(this);
this->configs.backend.create_peer_cfg_enumerator = (enumerator_t*(*)(backend_t*, identification_t *me, identification_t *other))create_peer_cfg_enumerator;
this->configs.backend.create_ike_cfg_enumerator = (enumerator_t*(*)(backend_t*, host_t *me, host_t *other))create_ike_cfg_enumerator;
this->configs.backend.get_peer_cfg_by_name = (peer_cfg_t* (*)(backend_t*,char*))get_peer_cfg_by_name;
charon->backends->add_backend(charon->backends, &this->configs.backend);
this->job = callback_job_create((callback_job_cb_t)stroke_receive,
this, NULL, NULL);
charon->processor->queue_job(charon->processor, (job_t*)this->job);
return &this->public.plugin;
}
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