Rune Harlyk
586 lines
14 KiB
C++
586 lines
14 KiB
C++
#include "PsychicRequest.h"
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#include "http_status.h"
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#include "PsychicHttpServer.h"
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PsychicRequest::PsychicRequest(PsychicHttpServer *server, httpd_req_t *req) : _server(server),
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_req(req),
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_method(HTTP_GET),
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_query(""),
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_body(""),
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_tempObject(NULL)
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{
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// load up our client.
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this->_client = server->getClient(req);
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// handle our session data
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if (req->sess_ctx != NULL)
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this->_session = (SessionData *)req->sess_ctx;
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else
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{
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this->_session = new SessionData();
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req->sess_ctx = this->_session;
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}
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// callback for freeing the session later
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req->free_ctx = this->freeSession;
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// load up some data
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this->_uri = String(this->_req->uri);
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}
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PsychicRequest::~PsychicRequest()
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{
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// temorary user object
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if (_tempObject != NULL)
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free(_tempObject);
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// our web parameters
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for (auto *param : _params)
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delete (param);
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_params.clear();
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}
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void PsychicRequest::freeSession(void *ctx)
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{
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if (ctx != NULL)
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{
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SessionData *session = (SessionData *)ctx;
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delete session;
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}
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}
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PsychicHttpServer *PsychicRequest::server()
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{
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return _server;
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}
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httpd_req_t *PsychicRequest::request()
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{
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return _req;
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}
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PsychicClient *PsychicRequest::client()
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{
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return _client;
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}
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const String PsychicRequest::getFilename()
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{
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// parse the content-disposition header
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if (this->hasHeader("Content-Disposition"))
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{
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ContentDisposition cd = this->getContentDisposition();
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if (cd.filename != "")
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return cd.filename;
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}
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// fall back to passed in query string
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PsychicWebParameter *param = getParam("_filename");
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if (param != NULL)
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return param->name();
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// fall back to parsing it from url (useful for wildcard uploads)
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String uri = this->uri();
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int filenameStart = uri.lastIndexOf('/') + 1;
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String filename = uri.substring(filenameStart);
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if (filename != "")
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return filename;
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// finally, unknown.
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ESP_LOGE(PH_TAG, "Did not get a valid filename from the upload.");
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return "unknown.txt";
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}
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const ContentDisposition PsychicRequest::getContentDisposition()
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{
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ContentDisposition cd;
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String header = this->header("Content-Disposition");
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int start;
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int end;
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if (header.indexOf("form-data") == 0)
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cd.disposition = FORM_DATA;
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else if (header.indexOf("attachment") == 0)
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cd.disposition = ATTACHMENT;
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else if (header.indexOf("inline") == 0)
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cd.disposition = INLINE;
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else
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cd.disposition = NONE;
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start = header.indexOf("filename=");
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if (start)
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{
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end = header.indexOf('"', start + 10);
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cd.filename = header.substring(start + 10, end - 1);
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}
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start = header.indexOf("name=");
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if (start)
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{
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end = header.indexOf('"', start + 6);
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cd.name = header.substring(start + 6, end - 1);
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}
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return cd;
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}
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esp_err_t PsychicRequest::loadBody()
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{
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esp_err_t err = ESP_OK;
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this->_body = String();
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size_t remaining = this->_req->content_len;
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size_t actuallyReceived = 0;
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char *buf = (char *)malloc(remaining + 1);
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if (buf == NULL)
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{
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ESP_LOGE(PH_TAG, "Failed to allocate memory for body");
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return ESP_FAIL;
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}
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while (remaining > 0)
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{
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int received = httpd_req_recv(this->_req, buf + actuallyReceived, remaining);
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if (received == HTTPD_SOCK_ERR_TIMEOUT)
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{
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continue;
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}
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else if (received == HTTPD_SOCK_ERR_FAIL)
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{
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ESP_LOGE(PH_TAG, "Failed to receive data.");
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err = ESP_FAIL;
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break;
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}
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remaining -= received;
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actuallyReceived += received;
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}
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buf[actuallyReceived] = '\0';
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this->_body = String(buf);
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free(buf);
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return err;
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}
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http_method PsychicRequest::method()
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{
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return (http_method)this->_req->method;
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}
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const String PsychicRequest::methodStr()
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{
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return String(http_method_str((http_method)this->_req->method));
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}
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const String PsychicRequest::path()
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{
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int index = _uri.indexOf("?");
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if (index == -1)
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return _uri;
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else
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return _uri.substring(0, index);
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}
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const String &PsychicRequest::uri()
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{
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return this->_uri;
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}
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const String &PsychicRequest::query()
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{
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return this->_query;
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}
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// no way to get list of headers yet....
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// int PsychicRequest::headers()
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// {
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// }
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const String PsychicRequest::header(const char *name)
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{
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size_t header_len = httpd_req_get_hdr_value_len(this->_req, name);
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// if we've got one, allocated it and load it
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if (header_len)
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{
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char header[header_len + 1];
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httpd_req_get_hdr_value_str(this->_req, name, header, sizeof(header));
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return String(header);
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}
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else
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return "";
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}
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bool PsychicRequest::hasHeader(const char *name)
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{
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return httpd_req_get_hdr_value_len(this->_req, name) > 0;
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}
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const String PsychicRequest::host()
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{
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return this->header("Host");
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}
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const String PsychicRequest::contentType()
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{
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return header("Content-Type");
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}
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size_t PsychicRequest::contentLength()
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{
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return this->_req->content_len;
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}
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const String &PsychicRequest::body()
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{
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return this->_body;
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}
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bool PsychicRequest::isMultipart()
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{
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const String &type = this->contentType();
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return (this->contentType().indexOf("multipart/form-data") >= 0);
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}
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esp_err_t PsychicRequest::redirect(const char *url)
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{
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PsychicResponse response(this);
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response.setCode(301);
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response.addHeader("Location", url);
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return response.send();
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}
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bool PsychicRequest::hasCookie(const char *key)
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{
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char cookie[MAX_COOKIE_SIZE];
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size_t cookieSize = MAX_COOKIE_SIZE;
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esp_err_t err = httpd_req_get_cookie_val(this->_req, key, cookie, &cookieSize);
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// did we get anything?
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if (err == ESP_OK)
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return true;
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else if (err == ESP_ERR_HTTPD_RESULT_TRUNC)
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ESP_LOGE(PH_TAG, "cookie too large (%d bytes).\n", cookieSize);
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return false;
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}
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const String PsychicRequest::getCookie(const char *key)
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{
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char cookie[MAX_COOKIE_SIZE];
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size_t cookieSize = MAX_COOKIE_SIZE;
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esp_err_t err = httpd_req_get_cookie_val(this->_req, key, cookie, &cookieSize);
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// did we get anything?
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if (err == ESP_OK)
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return String(cookie);
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else
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return "";
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}
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void PsychicRequest::loadParams()
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{
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// did we get a query string?
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size_t query_len = httpd_req_get_url_query_len(_req);
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if (query_len)
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{
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char query[query_len + 1];
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httpd_req_get_url_query_str(_req, query, sizeof(query));
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_query = "";
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_query.concat(query);
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// parse them.
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_addParams(_query);
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}
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// did we get form data as body?
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if (this->method() == HTTP_POST && this->contentType() == "application/x-www-form-urlencoded")
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{
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_addParams(_body);
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}
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}
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void PsychicRequest::_addParams(const String ¶ms)
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{
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size_t start = 0;
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while (start < params.length())
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{
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int end = params.indexOf('&', start);
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if (end < 0)
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end = params.length();
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int equal = params.indexOf('=', start);
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if (equal < 0 || equal > end)
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equal = end;
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String name = params.substring(start, equal);
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String value = equal + 1 < end ? params.substring(equal + 1, end) : String();
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addParam(name, value);
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start = end + 1;
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}
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}
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PsychicWebParameter *PsychicRequest::addParam(const String &name, const String &value, bool decode)
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{
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if (decode)
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return addParam(new PsychicWebParameter(urlDecode(name.c_str()), urlDecode(value.c_str())));
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else
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return addParam(new PsychicWebParameter(name, value));
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}
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PsychicWebParameter *PsychicRequest::addParam(PsychicWebParameter *param)
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{
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_params.push_back(param);
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return param;
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}
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bool PsychicRequest::hasParam(const char *key)
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{
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return getParam(key) != NULL;
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}
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PsychicWebParameter *PsychicRequest::getParam(const char *key)
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{
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for (auto *param : _params)
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if (param->name().equals(key))
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return param;
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return NULL;
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}
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bool PsychicRequest::hasSessionKey(const String &key)
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{
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return this->_session->find(key) != this->_session->end();
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}
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const String PsychicRequest::getSessionKey(const String &key)
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{
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auto it = this->_session->find(key);
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if (it != this->_session->end())
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return it->second;
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else
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return "";
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}
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void PsychicRequest::setSessionKey(const String &key, const String &value)
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{
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this->_session->insert(std::pair<String, String>(key, value));
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}
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static const String md5str(const String &in)
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{
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MD5Builder md5 = MD5Builder();
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md5.begin();
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md5.add(in);
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md5.calculate();
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return md5.toString();
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}
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bool PsychicRequest::authenticate(const char *username, const char *password)
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{
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if (hasHeader("Authorization"))
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{
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String authReq = header("Authorization");
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if (authReq.startsWith("Basic"))
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{
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authReq = authReq.substring(6);
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authReq.trim();
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char toencodeLen = strlen(username) + strlen(password) + 1;
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char *toencode = new char[toencodeLen + 1];
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if (toencode == NULL)
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{
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authReq = "";
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return false;
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}
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char *encoded = new char[base64_encode_expected_len(toencodeLen) + 1];
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if (encoded == NULL)
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{
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authReq = "";
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delete[] toencode;
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return false;
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}
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sprintf(toencode, "%s:%s", username, password);
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if (base64_encode_chars(toencode, toencodeLen, encoded) > 0 && authReq.equalsConstantTime(encoded))
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{
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authReq = "";
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delete[] toencode;
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delete[] encoded;
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return true;
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}
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delete[] toencode;
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delete[] encoded;
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}
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else if (authReq.startsWith(F("Digest")))
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{
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authReq = authReq.substring(7);
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String _username = _extractParam(authReq, F("username=\""), '\"');
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if (!_username.length() || _username != String(username))
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{
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authReq = "";
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return false;
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}
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// extracting required parameters for RFC 2069 simpler Digest
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String _realm = _extractParam(authReq, F("realm=\""), '\"');
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String _nonce = _extractParam(authReq, F("nonce=\""), '\"');
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String _uri = _extractParam(authReq, F("uri=\""), '\"');
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String _resp = _extractParam(authReq, F("response=\""), '\"');
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String _opaque = _extractParam(authReq, F("opaque=\""), '\"');
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if ((!_realm.length()) || (!_nonce.length()) || (!_uri.length()) || (!_resp.length()) || (!_opaque.length()))
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{
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authReq = "";
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return false;
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}
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if ((_opaque != this->getSessionKey("opaque")) || (_nonce != this->getSessionKey("nonce")) || (_realm != this->getSessionKey("realm")))
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{
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// DUMP(_opaque);
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// DUMP(this->getSessionKey("opaque"));
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// DUMP(_nonce);
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// DUMP(this->getSessionKey("nonce"));
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// DUMP(_realm);
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// DUMP(this->getSessionKey("realm"));
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authReq = "";
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return false;
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}
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// parameters for the RFC 2617 newer Digest
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String _nc, _cnonce;
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if (authReq.indexOf("qop=auth") != -1 || authReq.indexOf("qop=\"auth\"") != -1)
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{
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_nc = _extractParam(authReq, F("nc="), ',');
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_cnonce = _extractParam(authReq, F("cnonce=\""), '\"');
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}
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String _H1 = md5str(String(username) + ':' + _realm + ':' + String(password));
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ESP_LOGD(PH_TAG, "Hash of user:realm:pass=%s", _H1.c_str());
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String _H2 = "";
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if (_method == HTTP_GET)
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{
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_H2 = md5str(String(F("GET:")) + _uri);
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}
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else if (_method == HTTP_POST)
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{
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_H2 = md5str(String(F("POST:")) + _uri);
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}
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else if (_method == HTTP_PUT)
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{
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_H2 = md5str(String(F("PUT:")) + _uri);
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}
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else if (_method == HTTP_DELETE)
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{
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_H2 = md5str(String(F("DELETE:")) + _uri);
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}
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else
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{
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_H2 = md5str(String(F("GET:")) + _uri);
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}
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ESP_LOGD(PH_TAG, "Hash of GET:uri=%s", _H2.c_str());
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String _responsecheck = "";
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if (authReq.indexOf("qop=auth") != -1 || authReq.indexOf("qop=\"auth\"") != -1)
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{
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_responsecheck = md5str(_H1 + ':' + _nonce + ':' + _nc + ':' + _cnonce + F(":auth:") + _H2);
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}
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else
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{
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_responsecheck = md5str(_H1 + ':' + _nonce + ':' + _H2);
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}
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ESP_LOGD(PH_TAG, "The Proper response=%s", _responsecheck.c_str());
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if (_resp == _responsecheck)
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{
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authReq = "";
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return true;
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}
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}
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authReq = "";
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}
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return false;
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}
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const String PsychicRequest::_extractParam(const String &authReq, const String ¶m, const char delimit)
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{
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int _begin = authReq.indexOf(param);
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if (_begin == -1)
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return "";
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return authReq.substring(_begin + param.length(), authReq.indexOf(delimit, _begin + param.length()));
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}
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const String PsychicRequest::_getRandomHexString()
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{
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char buffer[33]; // buffer to hold 32 Hex Digit + /0
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int i;
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for (i = 0; i < 4; i++)
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{
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sprintf(buffer + (i * 8), "%08lx", esp_random());
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}
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return String(buffer);
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}
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esp_err_t PsychicRequest::requestAuthentication(HTTPAuthMethod mode, const char *realm, const char *authFailMsg)
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{
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// what is thy realm, sire?
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if (!strcmp(realm, ""))
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this->setSessionKey("realm", "Login Required");
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else
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this->setSessionKey("realm", realm);
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PsychicResponse response(this);
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String authStr;
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// what kind of auth?
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if (mode == BASIC_AUTH)
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{
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authStr = "Basic realm=\"" + this->getSessionKey("realm") + "\"";
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response.addHeader("WWW-Authenticate", authStr.c_str());
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}
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else
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{
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// only make new ones if we havent sent them yet
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if (this->getSessionKey("nonce").isEmpty())
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this->setSessionKey("nonce", _getRandomHexString());
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if (this->getSessionKey("opaque").isEmpty())
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this->setSessionKey("opaque", _getRandomHexString());
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authStr = "Digest realm=\"" + this->getSessionKey("realm") + "\", qop=\"auth\", nonce=\"" + this->getSessionKey("nonce") + "\", opaque=\"" + this->getSessionKey("opaque") + "\"";
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response.addHeader("WWW-Authenticate", authStr.c_str());
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}
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// DUMP(authStr);
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response.setCode(401);
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response.setContentType("text/html");
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response.setContent(authStr.c_str());
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return response.send();
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}
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esp_err_t PsychicRequest::reply(int code)
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{
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PsychicResponse response(this);
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response.setCode(code);
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response.setContentType("text/plain");
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response.setContent(http_status_reason(code));
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|
|
return response.send();
|
|
}
|
|
|
|
esp_err_t PsychicRequest::reply(const char *content)
|
|
{
|
|
PsychicResponse response(this);
|
|
|
|
response.setCode(200);
|
|
response.setContentType("text/html");
|
|
response.setContent(content);
|
|
|
|
return response.send();
|
|
}
|
|
|
|
esp_err_t PsychicRequest::reply(int code, const char *contentType, const char *content)
|
|
{
|
|
PsychicResponse response(this);
|
|
|
|
response.setCode(code);
|
|
response.setContentType(contentType);
|
|
response.setContent(content);
|
|
|
|
return response.send();
|
|
} |