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created REST API entry point and user handler

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This commit is contained in:
Bogdan Pilyugin 2022-10-29 17:40:31 +02:00
parent 0f386c35d0
commit 1b1454a160
1 changed files with 33 additions and 10 deletions
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43
src/HTTPServer.c
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@ -51,6 +51,13 @@ struct file_server_data *server_data = NULL;
httpd_handle_t server = NULL;
static const char *TAG = "HTTPServer";
//Pointer to external user defined rest api handler
static int (*HTTPUserRestAPI)(char *url, char *req, int len, char *resp) = NULL;
void regHTTPUserRestAPI(int (*api_handler)(char *url, char *req, int len, char *resp))
{
HTTPUserRestAPI = api_handler;
}
static esp_err_t CheckAuth(httpd_req_t *req)
{
unsigned char pass[18] = { 0 }; //max length of login:password decoded string
@ -168,6 +175,16 @@ static const char* get_path_from_uri(char *dest, const char *base_path,
return dest + base_pathlen;
}
static esp_err_t RestApiHandler(httpd_req_t *req)
{
#if HTTP_SERVER_DEBUG_LEVEL > 0
ESP_LOGI(TAG, "REST API handler");
#endif
httpd_resp_sendstr(req, "{\"apiver\":\"1.00\",\"result\":\"OK\"}"); // Response body can be empty
return ESP_OK;
}
static esp_err_t POSTHandler(httpd_req_t *req)
{
#if HTTP_SERVER_DEBUG_LEVEL > 0
@ -209,6 +226,12 @@ static esp_err_t POSTHandler(httpd_req_t *req)
((struct file_server_data*) req->user_ctx)->base_path,
req->uri,
sizeof(filepath));
if (!memcmp(filename, "/api", 4))
{
return RestApiHandler(req);
}
http_res = HTTPPostApp(req, filename, buf);
if (http_res == HTTP_IO_DONE)
@ -279,7 +302,7 @@ static esp_err_t GETHandler(httpd_req_t *req)
return ESP_OK;
}
//check auth for all files except status.json
//check auth for all files except status.json
if (strcmp(filename, "/status.json"))
{
if (CheckAuth(req) != ESP_OK)
@ -288,28 +311,28 @@ static esp_err_t GETHandler(httpd_req_t *req)
}
}
//open file
//open file
file = espfs_fopen(fs, filepath);
if (!file)
{
httpd_resp_send_err(req, HTTPD_404_NOT_FOUND, "File not found");
return ESP_FAIL;
}
//get file info
//get file info
espfs_stat(fs, filepath, &stat);
#if HTTP_SERVER_DEBUG_LEVEL > 0
ESP_LOGI(TAG, "Sending file : %s (%d bytes)...", filename,
stat.size);
#endif
//OutputDisplay((char*) filepath);
//OutputDisplay((char*) filepath);
set_content_type_from_file(req, filename);
/* Retrieve the pointer to scratch buffer for temporary storage */
char *chunk = ((struct file_server_data*) req->user_ctx)->scratch;
bufSize = MIN(stat.size, SCRATCH_BUFSIZE - MAX_DYNVAR_LENGTH);
readBytes = 0;
//allocate buffer for file data
//allocate buffer for file data
char *buf = (char*) malloc(bufSize);
if (!buf)
{
@ -319,16 +342,16 @@ static esp_err_t GETHandler(httpd_req_t *req)
espfs_fclose(file);
return ESP_FAIL;
}
//read first portion of data from file
//read first portion of data from file
readBytes = espfs_fread(file, buf, bufSize);
//check if file is compressed by GZIP and add correspondent header
//check if file is compressed by GZIP and add correspondent header
if (memmem(buf, 3, GZIP_SIGN, 3))
{
httpd_resp_set_hdr(req, "Content-Encoding", "gzip");
httpd_resp_set_hdr(req, "Cache-Control", "max-age=600");
}
//check if the file can contains dynamic variables
//check if the file can contains dynamic variables
if (IS_FILE_EXT(filename, ".html") || IS_FILE_EXT(filename, ".json"))
isDynamicVars = true;
@ -446,7 +469,7 @@ static httpd_handle_t start_webserver(void)
config.uri_match_fn = httpd_uri_match_wildcard;
config.max_open_sockets = 3;
// Start the httpd server
// Start the httpd server
ESP_LOGI(TAG, "Starting server on port: '%d'", config.server_port);
if (httpd_start(&server, &config) == ESP_OK)
{
@ -475,7 +498,7 @@ static httpd_handle_t start_webserver(void)
static void stop_webserver(httpd_handle_t server)
{
// Stop the httpd server
// Stop the httpd server
httpd_stop(server);
}