fw: app: update: Add data rx on HTTP PUT /update

This implements a HTTP handler capable of receiving the full data of the
firmware image upload. The data is not handled at all and thus not
written to flash.

This is just an incremental step towards successful firmware image
upload to the secondary MCUboot slot.

1 files changed, 18 insertions, 7 deletions

diff --git a/fw/app/src/update.c b/fw/app/src/update.c
index 13471d2..9e91380 100644
--- a/fw/app/src/update.c
+++ b/fw/app/src/update.c
@@ -5,9 +5,13 @@
  */
 
 
+#include <stdbool.h>
+
+#include <zephyr/dfu/flash_img.h>
 #include <zephyr/logging/log.h>
 #include <zephyr/net/http/server.h>
 #include <zephyr/net/http/service.h>
+#include <zephyr/net/http/status.h>
 
 LOG_MODULE_REGISTER(update);
 
@@ -19,21 +23,28 @@ static int update_handler(
 	struct http_response_ctx *response_ctx,
 	void *user_data
 ) {
-	LOG_DBG("Handling update request");
+	static size_t processed;
+
+	if (status == HTTP_SERVER_DATA_ABORTED) {
+		LOG_WRN("Transaction aborted after %zd bytes.", processed);
+		processed = 0;
+		return 0;
+	}
+
+	processed += request_ctx->data_len;
 
-	response_ctx->body = NULL;
-	response_ctx->body_len = 0;
-	response_ctx->final_chunk = true;
-	response_ctx->status = HTTP_204_NO_CONTENT;
+	if (status == HTTP_SERVER_DATA_FINAL) {
+		LOG_INF("Handled update request receiving %zd octets.", processed);
+		processed = 0;
+	}
 
-	LOG_DBG("Update request handled");
 	return 0;
 }
 
 static struct http_resource_detail_dynamic update_resource_detail = {
 	.common = {
 			.type = HTTP_RESOURCE_TYPE_DYNAMIC,
-			.bitmask_of_supported_http_methods = BIT(HTTP_GET),
+			.bitmask_of_supported_http_methods = BIT(HTTP_PUT),
 		},
 	.cb = update_handler,
 	.user_data = NULL,