Initial commit

cameradar_standalone/src/describe.cpp

@@ -0,0 +1,82 @@
+// Copyright 2016 Etix Labs
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <describe.h>
+
+namespace etix {
+namespace cameradar {
+
+//! Sends a request to the camera using the OPTION method,
+//! then a DESCRIBE to check for valid IDs
+//! then another DESCIBE with IDs if an authentication is needed
+bool
+curl_describe(const std::string& path, bool logs) {
+    CURL* csession;
+    CURLcode res;
+    struct curl_slist* custom_msg = NULL;
+    char URL[256];
+    long rc;
+    FILE* protofile = NULL;
+    protofile = fopen("/dev/null", "wb");
+    csession = curl_easy_init();
+    if (csession == NULL) return -1;
+    sprintf(URL, "%s", path.c_str());
+    // These are the options for all following cURL requests
+    // Activate verbose if debug is needed
+    curl_easy_setopt(csession, CURLOPT_TIMEOUT, 1);
+    curl_easy_setopt(csession, CURLOPT_NOBODY, 1);
+    curl_easy_setopt(csession, CURLOPT_URL, URL);
+    curl_easy_setopt(csession, CURLOPT_RTSP_STREAM_URI, URL);
+    curl_easy_setopt(csession, CURLOPT_FOLLOWLOCATION, 0);
+    curl_easy_setopt(csession, CURLOPT_HEADER, 0);
+    curl_easy_setopt(csession, CURLOPT_INTERLEAVEDATA, protofile);
+    curl_easy_setopt(csession, CURLOPT_VERBOSE, 0);
+    curl_easy_setopt(csession, CURLOPT_RTSP_REQUEST, CURL_RTSPREQ_OPTIONS);
+    curl_easy_setopt(csession, CURLOPT_WRITEDATA, protofile);
+    // This request will handshake the stream's server, it should always return 200 OK
+    curl_easy_perform(csession);
+    curl_easy_getinfo(csession, CURLINFO_RESPONSE_CODE, &rc);
+    custom_msg = curl_slist_append(
+        custom_msg, "Accept: application/x-rtsp-mh, application/rtsl, application/sdp");
+    curl_easy_setopt(csession, CURLOPT_RTSPHEADER, custom_msg);
+    curl_easy_setopt(csession, CURLOPT_RTSP_REQUEST, CURL_RTSPREQ_DESCRIBE);
+    curl_easy_setopt(csession, CURLOPT_WRITEDATA, protofile);
+    // This request will check if the given path is right without the need of encrypted ids
+    curl_easy_perform(
+        csession); // will return 404 if no ids and bad route, 401 if ids, 200 is all ok
+    res = curl_easy_getinfo(csession, CURLINFO_RESPONSE_CODE, &rc);
+    unsigned long pos = path.find("@");
+    if (pos != std::string::npos) {
+        std::string encoded = etix::tool::encode::encode64(path.substr(7, pos - 7));
+        custom_msg =
+            curl_slist_append(custom_msg, std::string("Authorization: Basic " + encoded).c_str());
+        curl_easy_setopt(csession, CURLOPT_RTSPHEADER, custom_msg);
+        curl_easy_setopt(csession, CURLOPT_RTSP_REQUEST, CURL_RTSPREQ_DESCRIBE);
+        curl_easy_setopt(csession, CURLOPT_WRITEDATA, protofile);
+        // This request will check if the given ids are good
+        curl_easy_perform(csession); // will return 404 if good ids, 401 if bad ids
+        res = curl_easy_getinfo(csession, CURLINFO_RESPONSE_CODE, &rc);
+    }
+    curl_easy_cleanup(csession);
+    fclose(protofile);
+    curl_global_cleanup();
+    if (logs) {
+        if (rc != 401 && pos == std::string::npos)
+            LOG_INFO_("Unprotected camera discovered.", "brutelogs");
+        return ((res == CURLE_OK) && rc != 401);
+    }
+    return ((res == CURLE_OK) && rc != 404);
+}
+}
+}