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esp32-selfsigned

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This commit is contained in:
Andy Green 2017-11-08 14:21:03 +08:00
parent 946bfa2f18
commit 516001db8a
11 changed files with 215 additions and 47 deletions
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1
Makefile.projbuild Normal file
View file

@ -0,0 +1 @@
CPPFLAGS += -I$(BUILD_DIR_BASE)/libwebsockets/include

9
lib/context.c
View file

@ -275,10 +275,10 @@ lws_protocol_init(struct lws_context *context)
if (vh->protocols[n].callback(&wsi,
LWS_CALLBACK_PROTOCOL_INIT, NULL,
(void *)pvo, 0)) {
lwsl_err("%s: vhost %s failed init\n", __func__,
lws_free(vh->protocol_vh_privs[n]);
vh->protocol_vh_privs[n] = NULL;
lwsl_err("%s: protocol %s failed init\n", __func__,
vh->protocols[n].name);
context->doing_protocol_init = 0;
return 1;
}
}
@ -855,7 +855,8 @@ lws_create_vhost(struct lws_context *context,
/* for the case we are adding a vhost much later, after server init */
if (context->protocol_init_done)
lws_protocol_init(context);
if (lws_protocol_init(context))
goto bail;
return vh;

4
lib/libwebsockets.h
View file

@ -4306,6 +4306,10 @@ lws_sql_purify(char *escaped, const char *string, int len);
*/
LWS_VISIBLE LWS_EXTERN const char *
lws_json_purify(char *escaped, const char *string, int len);
LWS_VISIBLE int
lws_plat_write_cert(struct lws_vhost *vhost, int is_key, int fd, void *buf,
int len);
///@}
/*! \defgroup ev libev helpers

200
lib/plat/lws-plat-esp32.c
View file

@ -1601,8 +1601,9 @@ lws_esp32_set_creation_defaults(struct lws_context_creation_info *info)
part = lws_esp_ota_get_boot_partition();
(void)part;
info->vhost_name = "default";
info->port = 443;
info->fd_limit_per_thread = 10;
info->fd_limit_per_thread = 30;
info->max_http_header_pool = 16;
info->max_http_header_data = 512;
info->pt_serv_buf_size = 2048;
@ -1612,8 +1613,8 @@ lws_esp32_set_creation_defaults(struct lws_context_creation_info *info)
info->options = LWS_SERVER_OPTION_EXPLICIT_VHOSTS |
LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT;
info->ssl_cert_filepath = "ssl-pub.pem";
info->ssl_private_key_filepath = "ssl-pri.pem";
// info->ssl_cert_filepath = "default-cert.pem";
// info->ssl_private_key_filepath = "default-key.pem";
}
int
@ -1655,6 +1656,138 @@ lws_esp32_get_image_info(const esp_partition_t *part, struct lws_esp32_image *i,
return 0;
}
static int
_rngf(void *context, unsigned char *buf, size_t len)
{
if ((size_t)lws_get_random(context, buf, len) == len)
return 0;
return -1;
}
int
lws_esp32_selfsigned(struct lws_vhost *vhost)
{
mbedtls_x509write_cert crt;
char subject[200];
mbedtls_pk_context mpk;
int buf_size = 4096, n;
uint8_t *buf = malloc(buf_size); /* malloc because given to user code */
mbedtls_mpi mpi;
nvs_handle nvh;
size_t s;
lwsl_notice("%s: %s\n", __func__, vhost->name);
if (!buf)
return -1;
if (nvs_open("lws-station", NVS_READWRITE, &nvh)) {
lwsl_notice("%s: can't open nvs\n", __func__);
free(buf);
return 1;
}
n = 0;
if (!nvs_get_blob(nvh, vhost->alloc_cert_path, NULL, &s))
n |= 1;
if (!nvs_get_blob(nvh, vhost->key_path, NULL, &s))
n |= 2;
nvs_close(nvh);
if (n == 3) {
lwsl_notice("%s: certs exist\n", __func__);
return 0; /* certs already exist */
}
lwsl_notice("%s: creating selfsigned initial certs\n", __func__);
mbedtls_x509write_crt_init(&crt);
mbedtls_pk_init(&mpk);
if (mbedtls_pk_setup(&mpk, mbedtls_pk_info_from_type(MBEDTLS_PK_RSA))) {
lwsl_notice("%s: pk_setup failed\n", __func__);
goto fail;
}
lwsl_notice("%s: generating 2048-bit RSA keypair... "
"this may take a minute or so...\n", __func__);
n = mbedtls_rsa_gen_key(mbedtls_pk_rsa(mpk), _rngf, vhost->context,
2048, 65537);
if (n) {
lwsl_notice("%s: failed to generate keys\n", __func__);
goto fail1;
}
lwsl_notice("%s: keys done\n", __func__);
/* subject must be formatted like "C=TW,O=warmcat,CN=myserver" */
lws_snprintf(subject, sizeof(subject) - 1,
"C=TW,ST=New Taipei City,L=Taipei,O=warmcat,CN=%s",
lws_esp32.hostname);
if (mbedtls_x509write_crt_set_subject_name(&crt, subject)) {
lwsl_notice("set SN failed\n");
goto fail1;
}
mbedtls_x509write_crt_set_subject_key(&crt, &mpk);
if (mbedtls_x509write_crt_set_issuer_name(&crt, subject)) {
lwsl_notice("set IN failed\n");
goto fail1;
}
mbedtls_x509write_crt_set_issuer_key(&crt, &mpk);
lws_get_random(vhost->context, &n, sizeof(n));
lws_snprintf(subject, sizeof(subject), "%d", n);
mbedtls_mpi_init(&mpi);
mbedtls_mpi_read_string(&mpi, 10, subject);
mbedtls_x509write_crt_set_serial(&crt, &mpi);
mbedtls_mpi_free(&mpi);
mbedtls_x509write_crt_set_validity(&crt, "20171105235959",
"20491231235959");
mbedtls_x509write_crt_set_key_usage(&crt,
MBEDTLS_X509_KU_DIGITAL_SIGNATURE |
MBEDTLS_X509_KU_KEY_ENCIPHERMENT);
mbedtls_x509write_crt_set_md_alg(&crt, MBEDTLS_MD_SHA256);
n = mbedtls_x509write_crt_pem(&crt, buf, buf_size, _rngf,
vhost->context);
if (n < 0) {
lwsl_notice("%s: write crt der failed\n", __func__);
goto fail1;
}
lws_plat_write_cert(vhost, 0, 0, buf, strlen((const char *)buf));
if (mbedtls_pk_write_key_pem(&mpk, buf, buf_size)) {
lwsl_notice("write key pem failed\n");
goto fail1;
}
lws_plat_write_cert(vhost, 1, 0, buf, strlen((const char *)buf));
mbedtls_pk_free(&mpk);
mbedtls_x509write_crt_free(&crt);
lwsl_notice("%s: cert creation complete\n", __func__);
return n;
fail1:
mbedtls_pk_free(&mpk);
fail:
mbedtls_x509write_crt_free(&crt);
free(buf);
nvs_close(nvh);
return -1;
}
struct lws_context *
lws_esp32_init(struct lws_context_creation_info *info, struct lws_vhost **pvh)
{
@ -1662,27 +1795,8 @@ lws_esp32_init(struct lws_context_creation_info *info, struct lws_vhost **pvh)
struct lws_context *context;
struct lws_esp32_image i;
struct lws_vhost *vhost;
nvs_handle nvh;
struct lws wsi;
char buf[512];
size_t s;
int n;
ESP_ERROR_CHECK(nvs_open("lws-station", NVS_READWRITE, &nvh));
n = 0;
s = 1;
if (nvs_get_blob(nvh, "ssl-pub.pem", NULL, &s) == ESP_OK)
n = 1;
s = 1;
if (nvs_get_blob(nvh, "ssl-pri.pem", NULL, &s) == ESP_OK)
n |= 2;
nvs_close(nvh);
if (n != 3) {
/* we are not configured for SSL yet... fall back to port 80 / http */
info->port = 80;
info->options &= ~LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT;
lwsl_notice("No SSL certs... using port 80\n");
}
context = lws_create_context(info);
if (context == NULL) {
@ -1706,16 +1820,29 @@ lws_esp32_init(struct lws_context_creation_info *info, struct lws_vhost **pvh)
lws_set_fops(context, &fops);
info->options |= LWS_SERVER_OPTION_CREATE_VHOST_SSL_CTX |
LWS_SERVER_OPTION_IGNORE_MISSING_CERT;
vhost = lws_create_vhost(context, info);
if (!vhost)
if (!vhost) {
lwsl_err("Failed to create vhost\n");
else
lws_init_vhost_client_ssl(info, vhost);
return NULL;
}
lws_esp32_selfsigned(vhost);
wsi.context = vhost->context;
wsi.vhost = vhost;
lws_tls_server_certs_load(vhost, &wsi, info->ssl_cert_filepath,
info->ssl_private_key_filepath, NULL, 0, NULL, 0);
lws_init_vhost_client_ssl(info, vhost);
if (pvh)
*pvh = vhost;
lws_protocol_init(context);
if (lws_protocol_init(context))
return NULL;
return context;
}
@ -1763,24 +1890,31 @@ uint16_t lws_esp32_sine_interp(int n)
/* we write vhostname.cert.pem and vhostname.key.pem, 0 return means OK */
int
LWS_VISIBLE int
lws_plat_write_cert(struct lws_vhost *vhost, int is_key, int fd, void *buf,
int len)
{
char name[64];
const char *name = vhost->alloc_cert_path;
nvs_handle nvh;
int n;
lws_snprintf(name, sizeof(name) - 1, "%s-%s.pem", vhost->name,
is_key ? "key" : "cert");
if (is_key)
name = vhost->key_path;
if (nvs_open("lws-station", NVS_READWRITE, &nvh))
if (nvs_open("lws-station", NVS_READWRITE, &nvh)) {
lwsl_notice("%s: failed to open nvs\n", __func__);
return 1;
}
n = nvs_set_blob(nvh, ssl_names[n], pss->buffer, pss->file_length);
n = nvs_set_blob(nvh, name, buf, len);
if (n)
nvs_commit(nvh);
nvs_close(nvh);
lwsl_notice("%s: wrote %s\n", __func__, name);
return n;
}

2
lib/plat/lws-plat-esp8266.c
View file

@ -713,7 +713,7 @@ lws_plat_init(struct lws_context *context,
return 0;
}
int
LWS_VISIBLE int
lws_plat_write_cert(struct lws_vhost *vhost, int is_key, int fd, void *buf,
int len)
{

2
lib/plat/lws-plat-optee.c
View file

@ -326,7 +326,7 @@ lws_plat_init(struct lws_context *context,
return 0;
}
int
LWS_VISIBLE int
lws_plat_write_cert(struct lws_vhost *vhost, int is_key, int fd, void *buf,
int len)
{

2
lib/plat/lws-plat-unix.c
View file

@ -870,7 +870,7 @@ lws_plat_init(struct lws_context *context,
return 0;
}
int
LWS_VISIBLE int
lws_plat_write_cert(struct lws_vhost *vhost, int is_key, int fd, void *buf,
int len)
{

2
lib/plat/lws-plat-win.c
View file

@ -755,7 +755,7 @@ int fork(void)
exit(0);
}
int
LWS_VISIBLE int
lws_plat_write_cert(struct lws_vhost *vhost, int is_key, int fd, void *buf,
int len)
{

3
lib/service.c
View file

@ -983,7 +983,8 @@ lws_service_fd_tsi(struct lws_context *context, struct lws_pollfd *pollfd,
int more;
if (!context->protocol_init_done)
lws_protocol_init(context);
if (lws_protocol_init(context))
return -1;
time(&now);

10
lib/tls/mbedtls/server.c
View file

@ -104,13 +104,20 @@ lws_tls_server_certs_load(struct lws_vhost *vhost, struct lws *wsi,
const char *mem_cert, size_t len_mem_cert,
const char *mem_privkey, size_t mem_privkey_len)
{
int n = lws_tls_generic_cert_checks(vhost, cert, private_key), f = 0;
int n, f = 0;
const char *filepath = private_key;
uint8_t *mem = NULL, *p = NULL;
size_t mem_len = 0;
lws_filepos_t flen;
long err;
if (!cert || !private_key) {
lwsl_notice("%s: no paths\n", __func__);
return 0;
}
n = lws_tls_generic_cert_checks(vhost, cert, private_key);
if (n == LWS_TLS_EXTANT_NO && (!mem_cert || !mem_privkey))
return 0;
@ -613,3 +620,4 @@ fail:
return -1;
}
#endif

27
lib/tls/tls.c
View file

@ -111,7 +111,7 @@ int alloc_file(struct lws_context *context, const char *filename, uint8_t **buf,
n = 1;
goto bail;
}
*buf = lws_malloc(s, "alloc_file");
*buf = lws_malloc(s + 1, "alloc_file");
if (!*buf) {
n = 2;
goto bail;
@ -123,6 +123,9 @@ int alloc_file(struct lws_context *context, const char *filename, uint8_t **buf,
}
*amount = s;
(*buf)[s] = '\0';
lwsl_notice("%s: nvs: read %s, %d bytes\n", __func__, filename, (int)s);
bail:
nvs_close(nvh);
@ -286,7 +289,7 @@ lws_tls_check_all_cert_lifetimes(struct lws_context *context)
return 0;
}
#if !defined(LWS_WITH_ESP32)
static int
lws_tls_extant(const char *name)
{
@ -303,7 +306,7 @@ lws_tls_extant(const char *name)
return n != 1;
}
#endif
/*
* Returns 0 if the filepath "name" exists and can be read from.
*
@ -337,8 +340,9 @@ lws_tls_extant(const char *name)
enum lws_tls_extant
lws_tls_use_any_upgrade_check_extant(const char *name)
{
char buf[256];
int n;
#if !defined(LWS_WITH_ESP32)
char buf[256];
lws_snprintf(buf, sizeof(buf) - 1, "%s.upd", name);
if (!lws_tls_extant(buf)) {
@ -368,6 +372,21 @@ lws_tls_use_any_upgrade_check_extant(const char *name)
if (lws_tls_extant(name))
return LWS_TLS_EXTANT_NO;
#else
nvs_handle nvh;
size_t s = 8192;
if (nvs_open("lws-station", NVS_READWRITE, &nvh)) {
lwsl_notice("%s: can't open nvs\n", __func__);
return LWS_TLS_EXTANT_NO;
}
n = nvs_get_blob(nvh, name, NULL, &s);
nvs_close(nvh);
if (n)
return LWS_TLS_EXTANT_NO;
#endif
return LWS_TLS_EXTANT_YES;
}