v3.3.t9

-moved buff_path setup code away from rdconf() to loadSh(). this
 insures root will never take ownership of the camera buffer.
-added service group option.
-updated the documentation in preperation of release.

README.md

@@ -30,30 +30,34 @@ parameters supported and descriptions of each.
 # also note to avoid using empty lines. if you're going to need an empty
 # line, start it with a '#'
 #
-recording_stream = rtsp://1.2.3.4:554/h264
+recording_uri = rtsp://1.2.3.4:554/h264
-# this is the url to the main stream of the IP camera that will be used
+# this is the uri to the main stream of the IP camera that will be used
-# to record footage.
+# to record footage. it can be a url to an rtsp stream or a direct device
+# path such as /dev/video0.
 #
-web_root = /var/opt/mow/web
+buffer_path = /var/buffer
-# this is the output directory that will be used to store recorded footage
-# from the cameras as well as the web interface for the application.
-# warning: this will overwrite any existing index.html files so be sure
-# to choose a directory that doesn't have an existing website.
-#
-buffer_path = /var/opt/mow/buf
 # this is the work directory the app will use to store live footage and
 # image frames. it's recommended to use a ram disk for this since there
-# will be large amounts of io occuring here. 1g of space per camera is
+# will be large amounts of io occuring here. 1GB of space per camera is
 # a good rule of thumb.
 #
+rec_path = /var/footage
+# this is video output directory that will be used to store any footage
+# that contain any motion events.
+#
+live_secs = 30
+# this is the maximum amount of seconds worth of live footage to keep in
+# buffer_path before deleting the oldest 2 seconds worth of footage.
+# note: each video clip in buffer_path should be 2 seconds long.
+#
 cam_name = cam-1
 # this is the optional camera name parameter to identify the camera. this
-# name will also be used to as the base directory in web_root. if not
+# name will also be used to as the base directory in buffer_path or 
-# defined, the name of the config file will be used.
+# rec_path. if not defined, the name of the config file will be used.
 #
 max_event_secs = 30
-# this is the maximum amount of secs of video footage that can be 
+# this is the maximum amount of secs of video footage that can be recorded 
-# recorded in a motion event.
+# in a motion event.
 #
 img_comp_cmd = magick compare -metric FUZZ &prev& &next& /dev/null
 # this is the command line template this application will use when calling 
@@ -74,14 +78,35 @@ img_comp_out = stderr
 # use to output the comparison score. this can only be stderr or stdout,
 # any other stream name is considered invalid.
 #
+stream_codec = copy
+# this is the encoding codec to use when recording footage from the camera. 
+# the list of supported codecs entirely depend on the hosts' ffmpeg 
+# installation. run 'ffmpeg -codecs' to determine this list. if not 
+# defined, 'copy' will be used as in it will just copy the codec format 
+# from camera itself.
+#
+stream_ext = .avi
+# this is the file extension that will be used to when recording footage
+# from the camera in buffer_path. ffmpeg will also use this to determine 
+# what format container to use for the video clips.
+#
+thumbnail_ext = .jpg
+# this the image format that will be used when creating the thumbnails
+# for the videos clips recorded to rec_path.
+#
+rec_ext = .avi
+# this the the file extension this will be used when storaging motion 
+# footage to rec_path. ffmpeg will also use this to determine what format 
+# container to use for the video clips. 
+#
 img_thresh = 8000
 # this parameter defines the score threshold from img_comp_cmd that will
 # be considered motion. any motion events will queue up max_event_secs
-# worth of hls clips to be written out to web_root.
+# worth of video clips to be written out to rec_path.
 #
 max_events = 100
 # this indicates the maximum amount of motion event video clips to keep
-# before deleting the oldest clip.
+# in rec_path before deleting the oldest clip.
 #
 post_secs = 60
 # this is the amount of seconds to wait before running the command 
@@ -93,23 +118,31 @@ post_cmd = move_the_ptz_camera.py
 # is to move a ptz camera to the next position of it's patrol pattern.
 # note: the call to this command will be delayed if motion was detected.
 #
-max_log_size = 50000
+rec_fps = 30
-# this is the maximum byte size of all log files that can be stored in
+# this sets the recording frames per second for the footage recorded 
-# web_root. whenever this limit is met, the log file will be deleted and
+# from the camera. this has no affect of using 'copy' as the 
-# then eventually recreated blank.
+# stream_codec.
 #
-web_text = #dee5ee
+rec_scale = 1280:720
-# this can be used to customize the color of the text in the web
+# this sets the pixel scale of the recorded footage from the camera. it
-# interface. it can be defined as any color understood by html5 standard.
+# uses width, height numeric strings seperated by a colon, eg W:H. this
+# has no affect of using 'copy' as the stream_codec.
 #
-web_bg = #485564
+img_scale = 320:240
-# this can be used to customize the background color of the web
+# this sets the pixel size of the thumbnails for recorded stored in 
-# interface. just like web_text, it also follows the html5 standard.
+# rec_path. it uses width, height numeric strings seperated by a colon, 
+# eg W:H.
 #
-web_font = courier
+service_user = mow
-# this will customize the text font family to use in the web interface.
+# this sets the service local user of the application dictating the 
-# it is recommended to use mono-spaced font because this is also used to
+# amount privilege it will have on the host. if not defined, the 
-# display logs and logs are best displayed in mono-spaced font.
+# unprivileged user 'mow' will be used. which ever user is defined here
+# just make sure it has read/write access to buffer_path and rec_path.
+#
+service_group = mow
+# this sets the service local group of the application that can further
+# refine host privileges. if not defined, the name stored in 
+# service_user will be used.
 ```
 
 ### Setup/Build/Install ###

install.sh

@@ -3,6 +3,10 @@ if [ -f "/opt/mow/uninst" ]; then
   mow -u -f
 fi
 
+if [ ! -d "/opt" ]; then
+  mkdir /opt
+fi
+
 if [ ! -d "/opt/mow" ]; then
   mkdir /opt/mow
 fi

src/common.cpp

@@ -212,6 +212,7 @@ bool rdConf(const QString &filePath, shared_t *share)
         share->camName.clear();
         share->buffPath.clear();
         share->recPath.clear();
+        share->servGroup.clear();
         
         auto thrCount = QThread::idealThreadCount() / 2;
 
@@ -228,8 +229,6 @@ bool rdConf(const QString &filePath, shared_t *share)
         share->streamExt    = ".avi";
         share->recExt       = ".avi";
         share->thumbExt     = ".jpg";
-        share->imgThreads   = thrCount;
-        share->recThreads   = thrCount;
         share->recFps       = 30;
         share->liveSecs     = 80;
         share->recScale     = "1280:720";
@@ -259,12 +258,11 @@ bool rdConf(const QString &filePath, shared_t *share)
                 rdLine("stream_ext = ",     line, &share->streamExt);
                 rdLine("rec_ext = ",        line, &share->recExt);
                 rdLine("thumbnail_ext = ",  line, &share->thumbExt);
-                rdLine("img_threads = ",    line, &share->imgThreads);
-                rdLine("rec_threads = ",    line, &share->recThreads);
                 rdLine("rec_fps = ",        line, &share->recFps);
                 rdLine("rec_scale = ",      line, &share->recScale);
                 rdLine("img_scale = ",      line, &share->imgScale);
                 rdLine("service_user = ",   line, &share->servUser);
+                rdLine("service_group = ",  line, &share->servGroup);
                 rdLine("live_secs = ",      line, &share->liveSecs);
             }
 
@@ -311,31 +309,14 @@ bool rdConf(const QString &filePath, shared_t *share)
         {
             share->evMaxSecs = share->liveSecs - 4;
         }
-        
+
-        share->retCode = EACCES;
+        if (share->servGroup.isEmpty())
-        
-        if (!mkPath(share->recPath))
         {
-            QTextStream(stderr) << "err: failed to create recording directory - " << share->recPath << " check for write permissions." << Qt::endl;
+            share->servGroup = share->servUser;
-        }
-        else if (!mkPath(share->buffPath))
-        {
-            QTextStream(stderr) << "err: failed to create buffer directory - " << share->buffPath << " check for write permissions." << Qt::endl;
-        }
-        else if (!mkPath(share->buffPath + "/img"))
-        {
-            QTextStream(stderr) << "err: failed to create 'img' in the buffer directory - " << share->buffPath << "/img" << " check for write permissions." << Qt::endl;
-        }
-        else if (!mkPath(share->buffPath + "/live"))
-        {
-            QTextStream(stderr) << "err: failed to create 'live' in the buffer directory - " << share->buffPath << "/live" << " check for write permissions." << Qt::endl;
-        }
-        else
-        {
-            share->retCode      = 0;
-            share->servMainLoop = QString(APP_BIN) + ".main_loop." + share->camName;
-            share->servVidLoop  = QString(APP_BIN) + ".vid_loop."  + share->camName;
         }
+
+        share->servMainLoop = QString(APP_BIN) + ".main_loop." + share->camName;
+        share->servVidLoop  = QString(APP_BIN) + ".vid_loop."  + share->camName;
     }
 
     return share->retCode == 0;

src/common.h

@@ -30,7 +30,7 @@
 
 using namespace std;
 
-#define APP_VER      "3.3.t8"
+#define APP_VER      "3.3.t9"
 #define APP_NAME     "Motion Watch"
 #define APP_BIN      "mow"
 #define DATETIME_FMT "yyyyMMddhhmmss"
@@ -74,12 +74,11 @@ struct shared_t
     QString      servMainLoop;
     QString      servVidLoop;
     QString      servUser;
+    QString      servGroup;
     bool         singleTenant;
     bool         skipCmd;
     int          liveSecs;
     int          recFps;
-    int          imgThreads;
-    int          recThreads;
     int          evMaxSecs;
     int          postSecs;
     int          imgThresh;

src/services.cpp

@@ -64,7 +64,7 @@ int loadService(const QString &desc, const QString &user, const QString &servNam
     return ret;
 }
 
-int loadSh(const QString &name, const QString &exeCmd, const QString &workDir)
+int loadSh(const QString &name, const QString &exeCmd, const QString &buffDir, const QString &outDir, const QString &servUser, const QString &servGroup)
 {
     QFile file("/usr/bin/" + name);
     
@@ -79,11 +79,18 @@ int loadSh(const QString &name, const QString &exeCmd, const QString &workDir)
     else
     {
         file.write("#!/bin/sh\n\n");
-        file.write("cd " + workDir.toUtf8() + "\n");
+        file.write("cd " + buffDir.toUtf8() + "\n");
         file.write(exeCmd.toUtf8() + "\n");
         file.close();
+
+        mkPath(buffDir);
+        mkPath(outDir);
+        mkPath(buffDir + "/live");
+        mkPath(buffDir + "/img");
         
         QProcess::execute("chmod", {"-v", "+x", file.fileName()});
+        QProcess::execute("chown", {servUser + ":" + servGroup, "-R", buffDir});
+        QProcess::execute("chown", {servUser + ":" + servGroup, "-R", outDir});
     }
     
     file.close();
@@ -135,8 +142,8 @@ int loadServiceByConf(const QString &confFile, bool start)
     {   
         auto desc = QString(APP_NAME) + " - " + conf.camName;
         
-        if (ret == 0) ret = loadSh(conf.servMainLoop, camCmdFromConf(&conf, MAIN_LOOP), conf.buffPath);
+        if (ret == 0) ret = loadSh(conf.servMainLoop, camCmdFromConf(&conf, MAIN_LOOP), conf.buffPath, conf.recPath, conf.servUser, conf.servGroup);
-        if (ret == 0) ret = loadSh(conf.servVidLoop, camCmdFromConf(&conf, VID_LOOP), conf.buffPath);
+        if (ret == 0) ret = loadSh(conf.servVidLoop, camCmdFromConf(&conf, VID_LOOP), conf.buffPath, conf.recPath, conf.servUser, conf.servGroup);
         
         if (ret == 0) ret = loadService(desc, conf.servUser, conf.servMainLoop, conf.buffPath, conf.recPath, start);
         if (ret == 0) ret = loadService(desc, conf.servUser, conf.servVidLoop,  conf.buffPath, conf.recPath, start);
@@ -171,11 +178,7 @@ int rmServiceByConf(const QString &confFile)
         conf.retCode = rmService(conf.servMainLoop);
         conf.retCode = rmService(conf.servVidLoop);
 
-        QDir live(conf.buffPath + "/live");
+        QDir(conf.buffPath).removeRecursively();
-        QDir img(conf.buffPath + "/img");
-
-        live.removeRecursively();
-        img.removeRecursively();
     }
     
     return conf.retCode;

src/services.h

@@ -24,6 +24,6 @@ int     loadServiceByDir(const QString &path, bool start);
 int     rmServiceByConf(const QString &confFile);
 int     rmService(const QString &servName);
 int     rmServiceByDir(const QString &path);
-int     loadSh(const QString &name, const QString &exeCmd, const QString &workDir);
+int     loadSh(const QString &name, const QString &exeCmd, const QString &buffDir, const QString &outDir, const QString &servUser, const QString &servGroup);
 
 #endif // SERVICES_H