Enable building without mbedtls

cesanta · Aug 21, 2020 · 6571430 · 6571430
1 parent 24c520d
commit 6571430
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Showing 3 changed files with 14 additions and 0 deletions.
diff --git a/include/mgos_file_utils.h b/include/mgos_file_utils.h
@@ -20,7 +20,9 @@
 #include <stdbool.h>
 #include <stdint.h>
 
+#ifdef MGOS_HAVE_MBEDTLS
 #include "mbedtls/md.h"
+#endif
 
 #ifdef __cplusplus
 extern "C" {
@@ -29,11 +31,13 @@ extern "C" {
 /* Copy a file */
 bool mgos_file_copy(const char *from, const char *to);
 
+#ifdef MGOS_HAVE_MBEDTLS
 /* Compute file's digest. *digest must have enough space for the digest type. */
 bool mgos_file_digest(const char *fname, mbedtls_md_type_t dt, uint8_t *digest);
 
 /* Copy the file if target does not exist or is different. */
 bool mgos_file_copy_if_different(const char *from, const char *to);
+#endif  // MGOS_HAVE_MBEDTLS
 
 #ifdef __cplusplus
 }

diff --git a/platforms/esp8266/src/esp_hal.c b/platforms/esp8266/src/esp_hal.c
@@ -142,3 +142,11 @@ uint32_t mgos_get_cpu_freq(void) {
 uint32_t sys_now(void) {
   return mgos_uptime_micros() / 1000;
 }
+
+// os_get_random uses hardware RNG, so it's cool.
+int mg_ssl_if_mbed_random(void *ctx, unsigned char *buf, size_t len) WEAK;
+int mg_ssl_if_mbed_random(void *ctx, unsigned char *buf, size_t len) {
+  os_get_random(buf, len);
+  (void) ctx;
+  return 0;
+}
diff --git a/src/mgos_file_utils.c b/src/mgos_file_utils.c
@@ -91,6 +91,7 @@ bool mgos_file_copy(const char *from, const char *to) {
   return ret;
 }
 
+#ifdef MGOS_HAVE_MBEDTLS
 bool mgos_file_digest(const char *fname, mbedtls_md_type_t dt,
                       uint8_t *digest) {
   bool res = false;
@@ -137,3 +138,4 @@ bool mgos_file_copy_if_different(const char *from, const char *to) {
   if (!res) res = mgos_file_copy(from, to);
   return res;
 }
+#endif  // MGOS_HAVE_MBEDTLS