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rtty: enable mTLS support

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Fixes: WIFI-10516
Signed-off-by: John Crispin <john@phrozen.org>
This commit is contained in:
John Crispin
2023-02-20 12:45:44 +01:00
parent 993ff2624e
commit 9274c3a719
2 changed files with 175 additions and 1 deletions
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2
feeds/ucentral/rtty/files/rtty.init
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@@ -51,7 +51,7 @@ start_rtty() {
procd_set_param command $BIN -h $host -I "$id" -a
[ -n "$port" ] && procd_append_param command -p "$port"
[ -n "$description" ] && procd_append_param command -d "$description"
[ "$ssl" = "1" ] && procd_append_param command -s
[ "$ssl" = "1" ] && procd_append_param command -s -c /etc/ucentral/cert.pem -k /etc/ucentral/key.pem
[ -n "$token" ] && procd_append_param command -t "$token"
[ "$verbose" = "1" ] && procd_append_param command -v
[ "$timeout" -eq "0" ] || procd_append_param command -e $timeout

174
feeds/ucentral/rtty/patches/200-mtls.patch Normal file
View File

@@ -0,0 +1,174 @@
commit 25bf87172d0d52dadb67aadda9a7dc10a57b4fb2
Author: Jiri Novotny <k4chn1k@gmail.com>
Date: Thu Feb 18 16:11:46 2021 +0100
feat: mTLS support (#89)
Signed-off-by: Jiri Novotny <k4chn1k@gmail.com>
Index: rtty-7.1.4/README.md
===================================================================
--- rtty-7.1.4.orig/README.md
+++ rtty-7.1.4/README.md
@@ -93,6 +93,8 @@ Select rtty in menuconfig and compile it
-d, --description=string Adding a description to the device(Maximum 126 bytes)
-a Auto reconnect to the server
-s SSL on
+ -k, --key Device key (PEM file) for mTLS\n"
+ -c, --cert Device certificate (PEM file) for mTLS\n"
-D Run in the background
-t, --token=string Authorization token
-f username Skip a second login authentication. See man login(1) about the details
@@ -107,6 +109,13 @@ Replace the following parameters with yo
sudo rtty -I 'My-device-ID' -h 'your-server' -p 5912 -a -v -d 'My Device Description'
+If your rttys is configured with mTLS enabled (device key and certificate required), add the following parameters(Replace the following with valid paths to your own)
+
+ -k /etc/ssl/private/abc.pem -c /etc/ssl/certs/abc.pem
+
+You can generate them e.g. via openssl tool
+ openssl req -x509 -newkey ec -pkeyopt ec_paramgen_curve:secp521r1 -keyout /tmp/key.pem -out /tmp/cert.pem -days 18262 -nodes -subj "/C=CZ/O=Acme Inc./OU=ACME/CN=ACME-DEV-123"
+
If your rttys is configured with a token, add the following parameter(Replace the following token with your own)
-t 34762d07637276694b938d23f10d7164
Index: rtty-7.1.4/src/main.c
===================================================================
--- rtty-7.1.4.orig/src/main.c
+++ rtty-7.1.4/src/main.c
@@ -54,6 +54,8 @@ static struct option long_options[] = {
{"port", required_argument, NULL, 'p'},
{"description", required_argument, NULL, 'd'},
{"token", required_argument, NULL, 't'},
+ {"key", required_argument, NULL, 'k'},
+ {"cert", required_argument, NULL, 'c'},
{"verbose", no_argument, NULL, 'v'},
{"version", no_argument, NULL, 'V'},
{"exit", required_argument, NULL, 'e'},
@@ -71,6 +73,8 @@ static void usage(const char *prog)
" -d, --description=string Adding a description to the device(Maximum 126 bytes)\n"
" -a Auto reconnect to the server\n"
" -s SSL on\n"
+ " -k, --key Device key (PEM file) for mTLS\n"
+ " -c, --cert Device certificate (PEM file) for mTLS\n"
" -D Run in the background\n"
" -t, --token=string Authorization token\n"
" -f username Skip a second login authentication. See man login(1) about the details\n"
@@ -106,7 +110,7 @@ int main(int argc, char **argv)
int c;
while (true) {
- c = getopt_long(argc, argv, "I:h:p:d:asDt:f:RS:vVe:", long_options, &option_index);
+ c = getopt_long(argc, argv, "I:h:p:d:asDt:f:RS:vVe:k:c:", long_options, &option_index);
if (c == -1)
break;
@@ -133,6 +137,12 @@ int main(int argc, char **argv)
case 's':
rtty.ssl_on = true;
break;
+ case 'k':
+ rtty.ssl_key = optarg;
+ break;
+ case 'c':
+ rtty.ssl_cert = optarg;
+ break;
case 'D':
background = true;
break;
Index: rtty-7.1.4/src/rtty.c
===================================================================
--- rtty-7.1.4.orig/src/rtty.c
+++ rtty-7.1.4/src/rtty.c
@@ -417,7 +417,7 @@ static void on_net_connected(int sock, v
if (rtty->ssl_on) {
#if (RTTY_SSL_SUPPORT)
- rtty_ssl_init((struct rtty_ssl_ctx **)&rtty->ssl, sock, rtty->host);
+ rtty_ssl_init((struct rtty_ssl_ctx **)&rtty->ssl, sock, rtty->host, rtty->ssl_key, rtty->ssl_cert);
#endif
}
Index: rtty-7.1.4/src/rtty.h
===================================================================
--- rtty-7.1.4.orig/src/rtty.h
+++ rtty-7.1.4/src/rtty.h
@@ -67,6 +67,8 @@ struct rtty {
const char *description;
const char *username;
bool ssl_on;
+ const char *ssl_key; /* path to device key */
+ const char *ssl_cert; /* path to device cert */
struct buffer rb;
struct buffer wb;
struct ev_io iow;
Index: rtty-7.1.4/src/ssl.c
===================================================================
--- rtty-7.1.4.orig/src/ssl.c
+++ rtty-7.1.4/src/ssl.c
@@ -68,6 +68,8 @@ struct rtty_ssl_ctx {
mbedtls_ctr_drbg_context drbg;
mbedtls_entropy_context etpy;
mbedtls_x509_crt x509;
+ mbedtls_x509_crt crt;
+ mbedtls_pk_context key;
bool last_read_ok;
#else
SSL_CTX *ctx;
@@ -75,7 +77,7 @@ struct rtty_ssl_ctx {
#endif
};
-int rtty_ssl_init(struct rtty_ssl_ctx **ctx, int sock, const char *host)
+int rtty_ssl_init(struct rtty_ssl_ctx **ctx, int sock, const char *host, const char *key, const char *cert)
{
struct rtty_ssl_ctx *c = calloc(1, sizeof(struct rtty_ssl_ctx));
if (!c) {
@@ -99,6 +101,18 @@ int rtty_ssl_init(struct rtty_ssl_ctx **
mbedtls_ssl_conf_authmode(&c->cfg, MBEDTLS_SSL_VERIFY_OPTIONAL);
mbedtls_ssl_conf_ca_chain(&c->cfg, &c->x509, NULL);
mbedtls_ssl_conf_rng(&c->cfg, mbedtls_ctr_drbg_random, &c->drbg);
+ if (key && cert) {
+ if (0 != mbedtls_pk_parse_keyfile(&c->key, key, NULL) ||
+ 0 != mbedtls_x509_crt_parse_file(&c->crt, cert)) {
+ free(c);
+ log_err("Loading mTLS key/cert failed\n");
+ return -1;
+ } else {
+ if (0 != mbedtls_ssl_conf_own_cert(&c->cfg, &c->crt, &c->key)) {
+ log(LOG_WARNING, "Setting mTLS key/cert failed\n");
+ }
+ }
+ }
mbedtls_ssl_set_bio(&c->ssl, &c->net, mbedtls_net_send,
mbedtls_net_recv, NULL);
@@ -121,6 +135,14 @@ int rtty_ssl_init(struct rtty_ssl_ctx **
c->ctx = SSL_CTX_new(TLS_client_method());
#endif
SSL_CTX_set_verify(c->ctx, SSL_VERIFY_NONE, NULL);
+ if (key && cert) {
+ if (1 != SSL_CTX_use_PrivateKey_file(c->ctx, key, SSL_FILETYPE_PEM) ||
+ 1 != SSL_CTX_use_certificate_file(c->ctx, cert, SSL_FILETYPE_PEM)) {
+ free(c);
+ log_err("Setting mTLS key/cert failed: %s\n", strerror(errno));
+ return -1;
+ }
+ }
c->ssl = SSL_new(c->ctx);
#if RTTY_HAVE_OPENSSL
SSL_set_tlsext_host_name(c->ssl, host);
Index: rtty-7.1.4/src/ssl.h
===================================================================
--- rtty-7.1.4.orig/src/ssl.h
+++ rtty-7.1.4/src/ssl.h
@@ -34,7 +34,7 @@
struct rtty_ssl_ctx;
-int rtty_ssl_init(struct rtty_ssl_ctx **ctx, int sock, const char *host);
+int rtty_ssl_init(struct rtty_ssl_ctx **ctx, int sock, const char *host, const char *key, const char *cert);
void rtty_ssl_free(struct rtty_ssl_ctx *ctx);