Willamette Valley Mesh - Git Server
Browse code

reorg_20202027

Gandolf authored on 10/27/2020 20:25:34
Showing 1 changed files
arednsig/aredn_fw_3_20_3_0/html/arednsig.php
History View file @ fe97b8b
1 1 
deleted file mode 100644
... ... 
@@ -1,205 +0,0 @@
1 
-<html>
2 
-<!-- Courtsey ruler
3 
-12345678901234567890123456789012345678901234567890123456789012345678901234567890
4 
-<head>
5 
-<style>
6 
-p {
7 
-    font: 14px ariel, sans serif;
8 
-}
9 
-#errorMsg {
10 
-    font:bold 18px arial,sans-serif;
11 
-    color:red;
12 
-    text-align:center;
13 
-}
14 
-.chartContainer {
15 
-    padding: 2px;
16 
-}
17 
-img.chart {
18 
-    width:100%;
19 
-}
20 
-</style>
21 
-</head>
22 
-<body>
23 
-
24 
-<?php
25 
-/*
26 
- Script: arednsig.php
27 
-
28 
- Description: This scripts generates on the server charts showing
29 
- signal data spanning the period supplied by the user.  The script
30 
- does the following:
31 
-    - converts user supplied dates to  epoch time
32 
-    - gets the times of the first and last data point in the round
33 
-      robin database (RRD)
34 
-    - from above validates user supplied begin and end dates
35 
-    - creates charts of the specified period
36 
-
37 
- Copyright 2020 Jeff Owrey
38 
-    This program is free software: you can redistribute it and/or modify
39 
-    it under the terms of the GNU General Public License as published by
40 
-    the Free Software Foundation, either version 3 of the License, or
41 
-    (at your option) any later version.
42 
-
43 
-    This program is distributed in the hope that it will be useful,
44 
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
45 
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
46 
-    GNU General Public License for more details.
47 
-
48 
-    You should have received a copy of the GNU General Public License
49 
-    along with this program.  If not, see http://www.gnu.org/license.
50 
-
51 
- Revision History
52 
-   * v20 released 18 Jan 2020 by J L Owrey; first release
53 
-*/
54 
-
55 
-# Define global constants
56 
-
57 
-# round robin database file
58 
-define("_RRD_FILE", str_replace("public_html/arednsig/arednsig.php",
59 
-                                "database/arednsigData.rrd",
60 
-                                $_SERVER["SCRIPT_FILENAME"]));
61 
-# charts html directory
62 
-define("_CHART_DIRECTORY", str_replace("arednsig.php",
63 
-                                       "dynamic/",
64 
-                                       $_SERVER["SCRIPT_FILENAME"]));
65 
-# standard chart width in pixels
66 
-define("_CHART_WIDTH", 600);
67 
-# standard chart height in pixels
68 
-define("_CHART_HEIGHT", 150);
69 
-# debug mode
70 
-define("_DEBUG", false);
71 
-
72 
-# Set error handling modes.
73 
-error_reporting(E_ALL);
74 
-
75 
-# Get user supplied chart begin and end dates.
76 
-$beginDate = $_POST["beginDate"];
77 
-$endDate =  $_POST["endDate"];
78 
-
79 
-# Convert the user supplied dates to epoch time stamps.
80 
-$beginDateEp = strtotime($beginDate);
81 
-$endDateEp = strtotime($endDate);
82 
-
83 
-# Get the time stamp of the earliest data point in the RRD file.
84 
-$cmd = sprintf("rrdtool first %s --rraindex 1", _RRD_FILE);
85 
-$firstDP = shell_exec($cmd);
86 
-
87 
-# Get the time stamp of the latest data point in the RRD file.
88 
-$cmd = sprintf("rrdtool last %s", _RRD_FILE);
89 
-$lastDP = shell_exec($cmd);
90 
-
91 
-# Determine validity of user supplied dates.  User supplied begin
92 
-# date must be less than user supplied end date.  Furthermore both
93 
-# dates must be within the range of dates stored in the RRD.
94 
-if ($beginDateEp > $endDateEp) {
95 
-    echo "<p id=\"errorMsg\">" .
96 
-         "End date must be after begin date.</p>";
97 
-} elseif ($beginDateEp < $firstDP || $endDateEp > $lastDP) {
98 
-    echo "<p id=\"errorMsg\">" .
99 
-          "Date range must be between " .
100 
-          date('m / d / Y', $firstDP) . " and " .
101 
-          date('m / d / Y', $lastDP) . ".</p>";
102 
-} else {
103 
-    # Generate charts from validated user supplied dates.
104 
-    if (_DEBUG) {
105 
-        echo "<p>Date range: " . $beginDateEp . " thru " .
106 
-              $endDateEp . "</p>";
107 
-    }
108 
-    createChart('custom_signal', 'S', 'dBm',
109 
-                'RSSI', $beginDateEp, $endDateEp,
110 
-                 0, 0, 2, false);
111 
-    createChart('custom_snr', 'SNR', 'dBm',
112 
-                'S/N', $beginDateEp, $endDateEp,
113 
-                 0, 0, 2, false);
114 
-    # Send html commands to client browser.
115 
-    echo "<div class=\"chartContainer\">" .
116 
-         "<img class=\"chart\" src=\"dynamic/custom_signal.png\">" .
117 
-         "</div>";
118 
-    echo "<div class=\"chartContainer\">" .
119 
-         "<img class=\"chart\" src=\"dynamic/custom_snr.png\">" .
120 
-         "</div>";
121 
-}
122 
-
123 
-function createChart($chartFile, $dataItem, $label, $title, $begin,
124 
-                     $end, $lower, $upper, $addTrend, $autoScale) {
125 
-    /*
126 
-    Uses rrdtool to create a chart of specified aredn node data item.
127 
-    Parameters:
128 
-       fileName - name of the created chart file
129 
-       dataItem - data item to be charted
130 
-       label - string containing a label for the item to be charted
131 
-       title - string containing a title for the chart
132 
-       begin - beginning time of the chart data
133 
-       end   - ending time of the data to be charted
134 
-       lower - lower bound for chart ordinate #NOT USED
135 
-       upper - upper bound for chart ordinate #NOT USED
136 
-       addTrend - 0, show only chart data
137 
-                  1, show only a trend line
138 
-                  2, show a trend line and the chart data
139 
-       autoScale - if True, then use vertical axis auto scaling
140 
-           (lower and upper parameters are ignored), otherwise use
141 
-           lower and upper parameters to set vertical axis scale
142 
-    Returns: True if successful, False otherwise
143 
-    */
144 
-
145 
-    # Define path on server to chart files.
146 
-    $chartPath = _CHART_DIRECTORY . $chartFile . ".png";
147 
-
148 
-    # Format the rrdtool chart command.
149 
-
150 
-    # Set chart file name, start time, end time, height, and width.
151 
-    $cmdfmt = "rrdtool graph %s -a PNG -s %s -e %s -w %s -h %s ";
152 
-    $cmd = sprintf($cmdfmt, $chartPath, $begin, $end, _CHART_WIDTH,
153 
-                   _CHART_HEIGHT);
154 
-    $cmdfmt = "-l %s -u %s -r ";
155 
-
156 
-    # Set upper and lower ordinate bounds.
157 
-    if ($lower < $upper) {
158 
-        $cmd .= sprintf($cmdfmt, $lower, $upper);
159 
-    } elseif ($autoScale) {
160 
-        $cmd .= "-A ";
161 
-    }
162 
-    $cmd .= "-Y ";
163 
-
164 
-    # Set the chart ordinate label and chart title.
165 
-    $cmdfmt = "-v %s -t %s ";
166 
-    $cmd .= sprintf($cmdfmt, $label, $title);
167 
-
168 
-    # Define moving average window width.
169 
-    $trendWindow = floor(($end - $begin) / 12);
170 
-
171 
-    # Show the data, or a moving average trend line over
172 
-    # the data, or both.
173 
-    $cmdfmt = "DEF:dSeries=%s:%s:LAST ";
174 
-    $cmd .= sprintf($cmdfmt, _RRD_FILE, $dataItem);
175 
-    if ($addTrend == 0) {
176 
-        $cmd .= "LINE1:dSeries#0400ff ";
177 
-    } elseif ($addTrend == 1) {
178 
-        $cmdfmt = "CDEF:smoothed=dSeries,%s,TREND LINE3:smoothed#ff0000 ";
179 
-        $cmd .= sprintf($cmdfmt, $trendWindow);
180 
-    } elseif ($addTrend == 2) {
181 
-        $cmd .= "LINE1:dSeries#0400ff ";
182 
-        $cmdfmt = "CDEF:smoothed=dSeries,%s,TREND LINE3:smoothed#ff0000 ";
183 
-        #$cmdfmt = "CDEF:smoothed=dSeries,%s,XYZZY LINE3:smoothed#ff0000 ";
184 
-        $cmd .=  sprintf($cmdfmt, $trendWindow);
185 
-    }
186 
-
187 
-    # Execute the formatted rrdtool command in the shell. The rrdtool
188 
-    # command will complete execution before the html image tags get
189 
-    # sent to the browser.  This assures that the charts are available
190 
-    # when the client browser executes the html code that loads the
191 
-    # charts into the document displayed by the client browser.
192 
-    if (_DEBUG) {
193 
-        echo "<p>chart command:<br>" . $cmd . "</p>";
194 
-    }
195 
-    $result = shell_exec($cmd . " 2>&1");
196 
-    if (_DEBUG) {
197 
-        echo "<p>result:<br>" . $result . "</p>";
198 
-    }
199 
-}
200 
-
201 
-?>
202 
-
203 
-</body>
204 
-</html>
Browse code

add version for FW v3.20

Gandolf authored on 10/03/2020 23:02:19
Showing 1 changed files
arednsig/aredn_fw_3_20_3_0/html/arednsig.php
History View file @ 11c3de6
1 1 
new file mode 100644
... ... 
@@ -0,0 +1,205 @@
1 
+<html>
2 
+<!-- Courtsey ruler
3 
+12345678901234567890123456789012345678901234567890123456789012345678901234567890
4 
+-->
5 
+<head>
6 
+<style>
7 
+p {
8 
+    font: 14px ariel, sans serif;
9 
+}
10 
+#errorMsg {
11 
+    font:bold 18px arial,sans-serif;
12 
+    color:red;
13 
+    text-align:center;
14 
+}
15 
+.chartContainer {
16 
+    padding: 2px;
17 
+}
18 
+img.chart {
19 
+    width:100%;
20 
+}
21 
+</style>
22 
+</head>
23 
+<body>
24 
+
25 
+<?php
26 
+/*
27 
+ Script: arednsig.php
28 
+
29 
+ Description: This scripts generates on the server charts showing
30 
+ signal data spanning the period supplied by the user.  The script
31 
+ does the following:
32 
+    - converts user supplied dates to  epoch time
33 
+    - gets the times of the first and last data point in the round
34 
+      robin database (RRD)
35 
+    - from above validates user supplied begin and end dates
36 
+    - creates charts of the specified period
37 
+
38 
+ Copyright 2020 Jeff Owrey
39 
+    This program is free software: you can redistribute it and/or modify
40 
+    it under the terms of the GNU General Public License as published by
41 
+    the Free Software Foundation, either version 3 of the License, or
42 
+    (at your option) any later version.
43 
+
44 
+    This program is distributed in the hope that it will be useful,
45 
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
46 
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
47 
+    GNU General Public License for more details.
48 
+
49 
+    You should have received a copy of the GNU General Public License
50 
+    along with this program.  If not, see http://www.gnu.org/license.
51 
+
52 
+ Revision History
53 
+   * v20 released 18 Jan 2020 by J L Owrey; first release
54 
+*/
55 
+
56 
+# Define global constants
57 
+
58 
+# round robin database file
59 
+define("_RRD_FILE", str_replace("public_html/arednsig/arednsig.php",
60 
+                                "database/arednsigData.rrd",
61 
+                                $_SERVER["SCRIPT_FILENAME"]));
62 
+# charts html directory
63 
+define("_CHART_DIRECTORY", str_replace("arednsig.php",
64 
+                                       "dynamic/",
65 
+                                       $_SERVER["SCRIPT_FILENAME"]));
66 
+# standard chart width in pixels
67 
+define("_CHART_WIDTH", 600);
68 
+# standard chart height in pixels
69 
+define("_CHART_HEIGHT", 150);
70 
+# debug mode
71 
+define("_DEBUG", false);
72 
+
73 
+# Set error handling modes.
74 
+error_reporting(E_ALL);
75 
+
76 
+# Get user supplied chart begin and end dates.
77 
+$beginDate = $_POST["beginDate"];
78 
+$endDate =  $_POST["endDate"];
79 
+
80 
+# Convert the user supplied dates to epoch time stamps.
81 
+$beginDateEp = strtotime($beginDate);
82 
+$endDateEp = strtotime($endDate);
83 
+
84 
+# Get the time stamp of the earliest data point in the RRD file.
85 
+$cmd = sprintf("rrdtool first %s --rraindex 1", _RRD_FILE);
86 
+$firstDP = shell_exec($cmd);
87 
+
88 
+# Get the time stamp of the latest data point in the RRD file.
89 
+$cmd = sprintf("rrdtool last %s", _RRD_FILE);
90 
+$lastDP = shell_exec($cmd);
91 
+
92 
+# Determine validity of user supplied dates.  User supplied begin
93 
+# date must be less than user supplied end date.  Furthermore both
94 
+# dates must be within the range of dates stored in the RRD.
95 
+if ($beginDateEp > $endDateEp) {
96 
+    echo "<p id=\"errorMsg\">" .
97 
+         "End date must be after begin date.</p>";
98 
+} elseif ($beginDateEp < $firstDP || $endDateEp > $lastDP) {
99 
+    echo "<p id=\"errorMsg\">" .
100 
+          "Date range must be between " .
101 
+          date('m / d / Y', $firstDP) . " and " .
102 
+          date('m / d / Y', $lastDP) . ".</p>";
103 
+} else {
104 
+    # Generate charts from validated user supplied dates.
105 
+    if (_DEBUG) {
106 
+        echo "<p>Date range: " . $beginDateEp . " thru " .
107 
+              $endDateEp . "</p>";
108 
+    }
109 
+    createChart('custom_signal', 'S', 'dBm',
110 
+                'RSSI', $beginDateEp, $endDateEp,
111 
+                 0, 0, 2, false);
112 
+    createChart('custom_snr', 'SNR', 'dBm',
113 
+                'S/N', $beginDateEp, $endDateEp,
114 
+                 0, 0, 2, false);
115 
+    # Send html commands to client browser.
116 
+    echo "<div class=\"chartContainer\">" .
117 
+         "<img class=\"chart\" src=\"dynamic/custom_signal.png\">" .
118 
+         "</div>";
119 
+    echo "<div class=\"chartContainer\">" .
120 
+         "<img class=\"chart\" src=\"dynamic/custom_snr.png\">" .
121 
+         "</div>";
122 
+}
123 
+
124 
+function createChart($chartFile, $dataItem, $label, $title, $begin,
125 
+                     $end, $lower, $upper, $addTrend, $autoScale) {
126 
+    /*
127 
+    Uses rrdtool to create a chart of specified aredn node data item.
128 
+    Parameters:
129 
+       fileName - name of the created chart file
130 
+       dataItem - data item to be charted
131 
+       label - string containing a label for the item to be charted
132 
+       title - string containing a title for the chart
133 
+       begin - beginning time of the chart data
134 
+       end   - ending time of the data to be charted
135 
+       lower - lower bound for chart ordinate #NOT USED
136 
+       upper - upper bound for chart ordinate #NOT USED
137 
+       addTrend - 0, show only chart data
138 
+                  1, show only a trend line
139 
+                  2, show a trend line and the chart data
140 
+       autoScale - if True, then use vertical axis auto scaling
141 
+           (lower and upper parameters are ignored), otherwise use
142 
+           lower and upper parameters to set vertical axis scale
143 
+    Returns: True if successful, False otherwise
144 
+    */
145 
+
146 
+    # Define path on server to chart files.
147 
+    $chartPath = _CHART_DIRECTORY . $chartFile . ".png";
148 
+
149 
+    # Format the rrdtool chart command.
150 
+
151 
+    # Set chart file name, start time, end time, height, and width.
152 
+    $cmdfmt = "rrdtool graph %s -a PNG -s %s -e %s -w %s -h %s ";
153 
+    $cmd = sprintf($cmdfmt, $chartPath, $begin, $end, _CHART_WIDTH,
154 
+                   _CHART_HEIGHT);
155 
+    $cmdfmt = "-l %s -u %s -r ";
156 
+
157 
+    # Set upper and lower ordinate bounds.
158 
+    if ($lower < $upper) {
159 
+        $cmd .= sprintf($cmdfmt, $lower, $upper);
160 
+    } elseif ($autoScale) {
161 
+        $cmd .= "-A ";
162 
+    }
163 
+    $cmd .= "-Y ";
164 
+
165 
+    # Set the chart ordinate label and chart title.
166 
+    $cmdfmt = "-v %s -t %s ";
167 
+    $cmd .= sprintf($cmdfmt, $label, $title);
168 
+
169 
+    # Define moving average window width.
170 
+    $trendWindow = floor(($end - $begin) / 12);
171 
+
172 
+    # Show the data, or a moving average trend line over
173 
+    # the data, or both.
174 
+    $cmdfmt = "DEF:dSeries=%s:%s:LAST ";
175 
+    $cmd .= sprintf($cmdfmt, _RRD_FILE, $dataItem);
176 
+    if ($addTrend == 0) {
177 
+        $cmd .= "LINE1:dSeries#0400ff ";
178 
+    } elseif ($addTrend == 1) {
179 
+        $cmdfmt = "CDEF:smoothed=dSeries,%s,TREND LINE3:smoothed#ff0000 ";
180 
+        $cmd .= sprintf($cmdfmt, $trendWindow);
181 
+    } elseif ($addTrend == 2) {
182 
+        $cmd .= "LINE1:dSeries#0400ff ";
183 
+        $cmdfmt = "CDEF:smoothed=dSeries,%s,TREND LINE3:smoothed#ff0000 ";
184 
+        #$cmdfmt = "CDEF:smoothed=dSeries,%s,XYZZY LINE3:smoothed#ff0000 ";
185 
+        $cmd .=  sprintf($cmdfmt, $trendWindow);
186 
+    }
187 
+
188 
+    # Execute the formatted rrdtool command in the shell. The rrdtool
189 
+    # command will complete execution before the html image tags get
190 
+    # sent to the browser.  This assures that the charts are available
191 
+    # when the client browser executes the html code that loads the
192 
+    # charts into the document displayed by the client browser.
193 
+    if (_DEBUG) {
194 
+        echo "<p>chart command:<br>" . $cmd . "</p>";
195 
+    }
196 
+    $result = shell_exec($cmd . " 2>&1");
197 
+    if (_DEBUG) {
198 
+        echo "<p>result:<br>" . $result . "</p>";
199 
+    }
200 
+}
201 
+
202 
+?>
203 
+
204 
+</body>
205 
+</html>
Browse code

remove old versions

Gandolf authored on 10/03/2020 23:00:21
Showing 1 changed files
arednsig/aredn_fw_3_20_3_0/html/arednsig.php
History View file @ 6d1202b
1 1 
deleted file mode 100644
... ... 
@@ -1,205 +0,0 @@
1 
-<html>
2 
-<!-- Courtsey ruler
3 
-12345678901234567890123456789012345678901234567890123456789012345678901234567890
4 
-<head>
5 
-<style>
6 
-p {
7 
-    font: 14px ariel, sans serif;
8 
-}
9 
-#errorMsg {
10 
-    font:bold 18px arial,sans-serif;
11 
-    color:red;
12 
-    text-align:center;
13 
-}
14 
-.chartContainer {
15 
-    padding: 2px;
16 
-}
17 
-img.chart {
18 
-    width:100%;
19 
-}
20 
-</style>
21 
-</head>
22 
-<body>
23 
-
24 
-<?php
25 
-/*
26 
- Script: arednsig.php
27 
-
28 
- Description: This scripts generates on the server charts showing
29 
- signal data spanning the period supplied by the user.  The script
30 
- does the following:
31 
-    - converts user supplied dates to  epoch time
32 
-    - gets the times of the first and last data point in the round
33 
-      robin database (RRD)
34 
-    - from above validates user supplied begin and end dates
35 
-    - creates charts of the specified period
36 
-
37 
- Copyright 2020 Jeff Owrey
38 
-    This program is free software: you can redistribute it and/or modify
39 
-    it under the terms of the GNU General Public License as published by
40 
-    the Free Software Foundation, either version 3 of the License, or
41 
-    (at your option) any later version.
42 
-
43 
-    This program is distributed in the hope that it will be useful,
44 
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
45 
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
46 
-    GNU General Public License for more details.
47 
-
48 
-    You should have received a copy of the GNU General Public License
49 
-    along with this program.  If not, see http://www.gnu.org/license.
50 
-
51 
- Revision History
52 
-   * v20 released 18 Jan 2020 by J L Owrey; first release
53 
-*/
54 
-
55 
-# Define global constants
56 
-
57 
-# round robin database file
58 
-define("_RRD_FILE", str_replace("public_html/arednsig/arednsig.php",
59 
-                                "database/arednsigData.rrd",
60 
-                                $_SERVER["SCRIPT_FILENAME"]));
61 
-# charts html directory
62 
-define("_CHART_DIRECTORY", str_replace("arednsig.php",
63 
-                                       "dynamic/",
64 
-                                       $_SERVER["SCRIPT_FILENAME"]));
65 
-# standard chart width in pixels
66 
-define("_CHART_WIDTH", 600);
67 
-# standard chart height in pixels
68 
-define("_CHART_HEIGHT", 150);
69 
-# debug mode
70 
-define("_DEBUG", false);
71 
-
72 
-# Set error handling modes.
73 
-error_reporting(E_ALL);
74 
-
75 
-# Get user supplied chart begin and end dates.
76 
-$beginDate = $_POST["beginDate"];
77 
-$endDate =  $_POST["endDate"];
78 
-
79 
-# Convert the user supplied dates to epoch time stamps.
80 
-$beginDateEp = strtotime($beginDate);
81 
-$endDateEp = strtotime($endDate);
82 
-
83 
-# Get the time stamp of the earliest data point in the RRD file.
84 
-$cmd = sprintf("rrdtool first %s --rraindex 1", _RRD_FILE);
85 
-$firstDP = shell_exec($cmd);
86 
-
87 
-# Get the time stamp of the latest data point in the RRD file.
88 
-$cmd = sprintf("rrdtool last %s", _RRD_FILE);
89 
-$lastDP = shell_exec($cmd);
90 
-
91 
-# Determine validity of user supplied dates.  User supplied begin
92 
-# date must be less than user supplied end date.  Furthermore both
93 
-# dates must be within the range of dates stored in the RRD.
94 
-if ($beginDateEp > $endDateEp) {
95 
-    echo "<p id=\"errorMsg\">" .
96 
-         "End date must be after begin date.</p>";
97 
-} elseif ($beginDateEp < $firstDP || $endDateEp > $lastDP) {
98 
-    echo "<p id=\"errorMsg\">" .
99 
-          "Date range must be between " .
100 
-          date('m / d / Y', $firstDP) . " and " .
101 
-          date('m / d / Y', $lastDP) . ".</p>";
102 
-} else {
103 
-    # Generate charts from validated user supplied dates.
104 
-    if (_DEBUG) {
105 
-        echo "<p>Date range: " . $beginDateEp . " thru " .
106 
-              $endDateEp . "</p>";
107 
-    }
108 
-    createChart('custom_signal', 'S', 'dBm',
109 
-                'RSSI', $beginDateEp, $endDateEp,
110 
-                 0, 0, 2, false);
111 
-    createChart('custom_snr', 'SNR', 'dBm',
112 
-                'S/N', $beginDateEp, $endDateEp,
113 
-                 0, 0, 2, false);
114 
-    # Send html commands to client browser.
115 
-    echo "<div class=\"chartContainer\">" .
116 
-         "<img class=\"chart\" src=\"dynamic/custom_signal.png\">" .
117 
-         "</div>";
118 
-    echo "<div class=\"chartContainer\">" .
119 
-         "<img class=\"chart\" src=\"dynamic/custom_snr.png\">" .
120 
-         "</div>";
121 
-}
122 
-
123 
-function createChart($chartFile, $dataItem, $label, $title, $begin,
124 
-                     $end, $lower, $upper, $addTrend, $autoScale) {
125 
-    /*
126 
-    Uses rrdtool to create a chart of specified aredn node data item.
127 
-    Parameters:
128 
-       fileName - name of the created chart file
129 
-       dataItem - data item to be charted
130 
-       label - string containing a label for the item to be charted
131 
-       title - string containing a title for the chart
132 
-       begin - beginning time of the chart data
133 
-       end   - ending time of the data to be charted
134 
-       lower - lower bound for chart ordinate #NOT USED
135 
-       upper - upper bound for chart ordinate #NOT USED
136 
-       addTrend - 0, show only chart data
137 
-                  1, show only a trend line
138 
-                  2, show a trend line and the chart data
139 
-       autoScale - if True, then use vertical axis auto scaling
140 
-           (lower and upper parameters are ignored), otherwise use
141 
-           lower and upper parameters to set vertical axis scale
142 
-    Returns: True if successful, False otherwise
143 
-    */
144 
-
145 
-    # Define path on server to chart files.
146 
-    $chartPath = _CHART_DIRECTORY . $chartFile . ".png";
147 
-
148 
-    # Format the rrdtool chart command.
149 
-
150 
-    # Set chart file name, start time, end time, height, and width.
151 
-    $cmdfmt = "rrdtool graph %s -a PNG -s %s -e %s -w %s -h %s ";
152 
-    $cmd = sprintf($cmdfmt, $chartPath, $begin, $end, _CHART_WIDTH,
153 
-                   _CHART_HEIGHT);
154 
-    $cmdfmt = "-l %s -u %s -r ";
155 
-
156 
-    # Set upper and lower ordinate bounds.
157 
-    if ($lower < $upper) {
158 
-        $cmd .= sprintf($cmdfmt, $lower, $upper);
159 
-    } elseif ($autoScale) {
160 
-        $cmd .= "-A ";
161 
-    }
162 
-    $cmd .= "-Y ";
163 
-
164 
-    # Set the chart ordinate label and chart title.
165 
-    $cmdfmt = "-v %s -t %s ";
166 
-    $cmd .= sprintf($cmdfmt, $label, $title);
167 
-
168 
-    # Define moving average window width.
169 
-    $trendWindow = floor(($end - $begin) / 12);
170 
-
171 
-    # Show the data, or a moving average trend line over
172 
-    # the data, or both.
173 
-    $cmdfmt = "DEF:dSeries=%s:%s:LAST ";
174 
-    $cmd .= sprintf($cmdfmt, _RRD_FILE, $dataItem);
175 
-    if ($addTrend == 0) {
176 
-        $cmd .= "LINE1:dSeries#0400ff ";
177 
-    } elseif ($addTrend == 1) {
178 
-        $cmdfmt = "CDEF:smoothed=dSeries,%s,TREND LINE3:smoothed#ff0000 ";
179 
-        $cmd .= sprintf($cmdfmt, $trendWindow);
180 
-    } elseif ($addTrend == 2) {
181 
-        $cmd .= "LINE1:dSeries#0400ff ";
182 
-        $cmdfmt = "CDEF:smoothed=dSeries,%s,TREND LINE3:smoothed#ff0000 ";
183 
-        #$cmdfmt = "CDEF:smoothed=dSeries,%s,XYZZY LINE3:smoothed#ff0000 ";
184 
-        $cmd .=  sprintf($cmdfmt, $trendWindow);
185 
-    }
186 
-
187 
-    # Execute the formatted rrdtool command in the shell. The rrdtool
188 
-    # command will complete execution before the html image tags get
189 
-    # sent to the browser.  This assures that the charts are available
190 
-    # when the client browser executes the html code that loads the
191 
-    # charts into the document displayed by the client browser.
192 
-    if (_DEBUG) {
193 
-        echo "<p>chart command:<br>" . $cmd . "</p>";
194 
-    }
195 
-    $result = shell_exec($cmd . " 2>&1");
196 
-    if (_DEBUG) {
197 
-        echo "<p>result:<br>" . $result . "</p>";
198 
-    }
199 
-}
200 
-
201 
-?>
202 
-
203 
-</body>
204 
-</html>
Browse code

support for Aredn firmware version 3.20.3.0

gandolf authored on 03/31/2020 18:07:19
Showing 1 changed files
arednsig/aredn_fw_3_20_3_0/html/arednsig.php
History View file @ 7abcd97
1 1 
new file mode 100644
... ... 
@@ -0,0 +1,205 @@
1 
+<html>
2 
+<!-- Courtsey ruler
3 
+12345678901234567890123456789012345678901234567890123456789012345678901234567890
4 
+-->
5 
+<head>
6 
+<style>
7 
+p {
8 
+    font: 14px ariel, sans serif;
9 
+}
10 
+#errorMsg {
11 
+    font:bold 18px arial,sans-serif;
12 
+    color:red;
13 
+    text-align:center;
14 
+}
15 
+.chartContainer {
16 
+    padding: 2px;
17 
+}
18 
+img.chart {
19 
+    width:100%;
20 
+}
21 
+</style>
22 
+</head>
23 
+<body>
24 
+
25 
+<?php
26 
+/*
27 
+ Script: arednsig.php
28 
+
29 
+ Description: This scripts generates on the server charts showing
30 
+ signal data spanning the period supplied by the user.  The script
31 
+ does the following:
32 
+    - converts user supplied dates to  epoch time
33 
+    - gets the times of the first and last data point in the round
34 
+      robin database (RRD)
35 
+    - from above validates user supplied begin and end dates
36 
+    - creates charts of the specified period
37 
+
38 
+ Copyright 2020 Jeff Owrey
39 
+    This program is free software: you can redistribute it and/or modify
40 
+    it under the terms of the GNU General Public License as published by
41 
+    the Free Software Foundation, either version 3 of the License, or
42 
+    (at your option) any later version.
43 
+
44 
+    This program is distributed in the hope that it will be useful,
45 
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
46 
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
47 
+    GNU General Public License for more details.
48 
+
49 
+    You should have received a copy of the GNU General Public License
50 
+    along with this program.  If not, see http://www.gnu.org/license.
51 
+
52 
+ Revision History
53 
+   * v20 released 18 Jan 2020 by J L Owrey; first release
54 
+*/
55 
+
56 
+# Define global constants
57 
+
58 
+# round robin database file
59 
+define("_RRD_FILE", str_replace("public_html/arednsig/arednsig.php",
60 
+                                "database/arednsigData.rrd",
61 
+                                $_SERVER["SCRIPT_FILENAME"]));
62 
+# charts html directory
63 
+define("_CHART_DIRECTORY", str_replace("arednsig.php",
64 
+                                       "dynamic/",
65 
+                                       $_SERVER["SCRIPT_FILENAME"]));
66 
+# standard chart width in pixels
67 
+define("_CHART_WIDTH", 600);
68 
+# standard chart height in pixels
69 
+define("_CHART_HEIGHT", 150);
70 
+# debug mode
71 
+define("_DEBUG", false);
72 
+
73 
+# Set error handling modes.
74 
+error_reporting(E_ALL);
75 
+
76 
+# Get user supplied chart begin and end dates.
77 
+$beginDate = $_POST["beginDate"];
78 
+$endDate =  $_POST["endDate"];
79 
+
80 
+# Convert the user supplied dates to epoch time stamps.
81 
+$beginDateEp = strtotime($beginDate);
82 
+$endDateEp = strtotime($endDate);
83 
+
84 
+# Get the time stamp of the earliest data point in the RRD file.
85 
+$cmd = sprintf("rrdtool first %s --rraindex 1", _RRD_FILE);
86 
+$firstDP = shell_exec($cmd);
87 
+
88 
+# Get the time stamp of the latest data point in the RRD file.
89 
+$cmd = sprintf("rrdtool last %s", _RRD_FILE);
90 
+$lastDP = shell_exec($cmd);
91 
+
92 
+# Determine validity of user supplied dates.  User supplied begin
93 
+# date must be less than user supplied end date.  Furthermore both
94 
+# dates must be within the range of dates stored in the RRD.
95 
+if ($beginDateEp > $endDateEp) {
96 
+    echo "<p id=\"errorMsg\">" .
97 
+         "End date must be after begin date.</p>";
98 
+} elseif ($beginDateEp < $firstDP || $endDateEp > $lastDP) {
99 
+    echo "<p id=\"errorMsg\">" .
100 
+          "Date range must be between " .
101 
+          date('m / d / Y', $firstDP) . " and " .
102 
+          date('m / d / Y', $lastDP) . ".</p>";
103 
+} else {
104 
+    # Generate charts from validated user supplied dates.
105 
+    if (_DEBUG) {
106 
+        echo "<p>Date range: " . $beginDateEp . " thru " .
107 
+              $endDateEp . "</p>";
108 
+    }
109 
+    createChart('custom_signal', 'S', 'dBm',
110 
+                'RSSI', $beginDateEp, $endDateEp,
111 
+                 0, 0, 2, false);
112 
+    createChart('custom_snr', 'SNR', 'dBm',
113 
+                'S/N', $beginDateEp, $endDateEp,
114 
+                 0, 0, 2, false);
115 
+    # Send html commands to client browser.
116 
+    echo "<div class=\"chartContainer\">" .
117 
+         "<img class=\"chart\" src=\"dynamic/custom_signal.png\">" .
118 
+         "</div>";
119 
+    echo "<div class=\"chartContainer\">" .
120 
+         "<img class=\"chart\" src=\"dynamic/custom_snr.png\">" .
121 
+         "</div>";
122 
+}
123 
+
124 
+function createChart($chartFile, $dataItem, $label, $title, $begin,
125 
+                     $end, $lower, $upper, $addTrend, $autoScale) {
126 
+    /*
127 
+    Uses rrdtool to create a chart of specified aredn node data item.
128 
+    Parameters:
129 
+       fileName - name of the created chart file
130 
+       dataItem - data item to be charted
131 
+       label - string containing a label for the item to be charted
132 
+       title - string containing a title for the chart
133 
+       begin - beginning time of the chart data
134 
+       end   - ending time of the data to be charted
135 
+       lower - lower bound for chart ordinate #NOT USED
136 
+       upper - upper bound for chart ordinate #NOT USED
137 
+       addTrend - 0, show only chart data
138 
+                  1, show only a trend line
139 
+                  2, show a trend line and the chart data
140 
+       autoScale - if True, then use vertical axis auto scaling
141 
+           (lower and upper parameters are ignored), otherwise use
142 
+           lower and upper parameters to set vertical axis scale
143 
+    Returns: True if successful, False otherwise
144 
+    */
145 
+
146 
+    # Define path on server to chart files.
147 
+    $chartPath = _CHART_DIRECTORY . $chartFile . ".png";
148 
+
149 
+    # Format the rrdtool chart command.
150 
+
151 
+    # Set chart file name, start time, end time, height, and width.
152 
+    $cmdfmt = "rrdtool graph %s -a PNG -s %s -e %s -w %s -h %s ";
153 
+    $cmd = sprintf($cmdfmt, $chartPath, $begin, $end, _CHART_WIDTH,
154 
+                   _CHART_HEIGHT);
155 
+    $cmdfmt = "-l %s -u %s -r ";
156 
+
157 
+    # Set upper and lower ordinate bounds.
158 
+    if ($lower < $upper) {
159 
+        $cmd .= sprintf($cmdfmt, $lower, $upper);
160 
+    } elseif ($autoScale) {
161 
+        $cmd .= "-A ";
162 
+    }
163 
+    $cmd .= "-Y ";
164 
+
165 
+    # Set the chart ordinate label and chart title.
166 
+    $cmdfmt = "-v %s -t %s ";
167 
+    $cmd .= sprintf($cmdfmt, $label, $title);
168 
+
169 
+    # Define moving average window width.
170 
+    $trendWindow = floor(($end - $begin) / 12);
171 
+
172 
+    # Show the data, or a moving average trend line over
173 
+    # the data, or both.
174 
+    $cmdfmt = "DEF:dSeries=%s:%s:LAST ";
175 
+    $cmd .= sprintf($cmdfmt, _RRD_FILE, $dataItem);
176 
+    if ($addTrend == 0) {
177 
+        $cmd .= "LINE1:dSeries#0400ff ";
178 
+    } elseif ($addTrend == 1) {
179 
+        $cmdfmt = "CDEF:smoothed=dSeries,%s,TREND LINE3:smoothed#ff0000 ";
180 
+        $cmd .= sprintf($cmdfmt, $trendWindow);
181 
+    } elseif ($addTrend == 2) {
182 
+        $cmd .= "LINE1:dSeries#0400ff ";
183 
+        $cmdfmt = "CDEF:smoothed=dSeries,%s,TREND LINE3:smoothed#ff0000 ";
184 
+        #$cmdfmt = "CDEF:smoothed=dSeries,%s,XYZZY LINE3:smoothed#ff0000 ";
185 
+        $cmd .=  sprintf($cmdfmt, $trendWindow);
186 
+    }
187 
+
188 
+    # Execute the formatted rrdtool command in the shell. The rrdtool
189 
+    # command will complete execution before the html image tags get
190 
+    # sent to the browser.  This assures that the charts are available
191 
+    # when the client browser executes the html code that loads the
192 
+    # charts into the document displayed by the client browser.
193 
+    if (_DEBUG) {
194 
+        echo "<p>chart command:<br>" . $cmd . "</p>";
195 
+    }
196 
+    $result = shell_exec($cmd . " 2>&1");
197 
+    if (_DEBUG) {
198 
+        echo "<p>result:<br>" . $result . "</p>";
199 
+    }
200 
+}
201 
+
202 
+?>
203 
+
204 
+</body>
205 
+</html>
Browse code

fix version numbers

gandolf authored on 03/31/2020 18:04:12
Showing 1 changed files
arednsig/aredn_fw_3_20_3_0/html/arednsig.php
History View file @ 30aea67
1 1 
deleted file mode 100644
... ... 
@@ -1,205 +0,0 @@
1 
-<html>
2 
-<!-- Courtsey ruler
3 
-12345678901234567890123456789012345678901234567890123456789012345678901234567890
4 
-<head>
5 
-<style>
6 
-p {
7 
-    font: 14px ariel, sans serif;
8 
-}
9 
-#errorMsg {
10 
-    font:bold 18px arial,sans-serif;
11 
-    color:red;
12 
-    text-align:center;
13 
-}
14 
-.chartContainer {
15 
-    padding: 2px;
16 
-}
17 
-img.chart {
18 
-    width:100%;
19 
-}
20 
-</style>
21 
-</head>
22 
-<body>
23 
-
24 
-<?php
25 
-/*
26 
- Script: arednsig.php
27 
-
28 
- Description: This scripts generates on the server charts showing
29 
- signal data spanning the period supplied by the user.  The script
30 
- does the following:
31 
-    - converts user supplied dates to  epoch time
32 
-    - gets the times of the first and last data point in the round
33 
-      robin database (RRD)
34 
-    - from above validates user supplied begin and end dates
35 
-    - creates charts of the specified period
36 
-
37 
- Copyright 2020 Jeff Owrey
38 
-    This program is free software: you can redistribute it and/or modify
39 
-    it under the terms of the GNU General Public License as published by
40 
-    the Free Software Foundation, either version 3 of the License, or
41 
-    (at your option) any later version.
42 
-
43 
-    This program is distributed in the hope that it will be useful,
44 
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
45 
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
46 
-    GNU General Public License for more details.
47 
-
48 
-    You should have received a copy of the GNU General Public License
49 
-    along with this program.  If not, see http://www.gnu.org/license.
50 
-
51 
- Revision History
52 
-   * v20 released 18 Jan 2020 by J L Owrey; first release
53 
-*/
54 
-
55 
-# Define global constants
56 
-
57 
-# round robin database file
58 
-define("_RRD_FILE", str_replace("public_html/arednsig/arednsig.php",
59 
-                                "database/arednsigData.rrd",
60 
-                                $_SERVER["SCRIPT_FILENAME"]));
61 
-# charts html directory
62 
-define("_CHART_DIRECTORY", str_replace("arednsig.php",
63 
-                                       "dynamic/",
64 
-                                       $_SERVER["SCRIPT_FILENAME"]));
65 
-# standard chart width in pixels
66 
-define("_CHART_WIDTH", 600);
67 
-# standard chart height in pixels
68 
-define("_CHART_HEIGHT", 150);
69 
-# debug mode
70 
-define("_DEBUG", false);
71 
-
72 
-# Set error handling modes.
73 
-error_reporting(E_ALL);
74 
-
75 
-# Get user supplied chart begin and end dates.
76 
-$beginDate = $_POST["beginDate"];
77 
-$endDate =  $_POST["endDate"];
78 
-
79 
-# Convert the user supplied dates to epoch time stamps.
80 
-$beginDateEp = strtotime($beginDate);
81 
-$endDateEp = strtotime($endDate);
82 
-
83 
-# Get the time stamp of the earliest data point in the RRD file.
84 
-$cmd = sprintf("rrdtool first %s --rraindex 1", _RRD_FILE);
85 
-$firstDP = shell_exec($cmd);
86 
-
87 
-# Get the time stamp of the latest data point in the RRD file.
88 
-$cmd = sprintf("rrdtool last %s", _RRD_FILE);
89 
-$lastDP = shell_exec($cmd);
90 
-
91 
-# Determine validity of user supplied dates.  User supplied begin
92 
-# date must be less than user supplied end date.  Furthermore both
93 
-# dates must be within the range of dates stored in the RRD.
94 
-if ($beginDateEp > $endDateEp) {
95 
-    echo "<p id=\"errorMsg\">" .
96 
-         "End date must be after begin date.</p>";
97 
-} elseif ($beginDateEp < $firstDP || $endDateEp > $lastDP) {
98 
-    echo "<p id=\"errorMsg\">" .
99 
-          "Date range must be between " .
100 
-          date('m / d / Y', $firstDP) . " and " .
101 
-          date('m / d / Y', $lastDP) . ".</p>";
102 
-} else {
103 
-    # Generate charts from validated user supplied dates.
104 
-    if (_DEBUG) {
105 
-        echo "<p>Date range: " . $beginDateEp . " thru " .
106 
-              $endDateEp . "</p>";
107 
-    }
108 
-    createChart('custom_signal', 'S', 'dBm',
109 
-                'RSSI', $beginDateEp, $endDateEp,
110 
-                 0, 0, 2, false);
111 
-    createChart('custom_snr', 'SNR', 'dBm',
112 
-                'S/N', $beginDateEp, $endDateEp,
113 
-                 0, 0, 2, false);
114 
-    # Send html commands to client browser.
115 
-    echo "<div class=\"chartContainer\">" .
116 
-         "<img class=\"chart\" src=\"dynamic/custom_signal.png\">" .
117 
-         "</div>";
118 
-    echo "<div class=\"chartContainer\">" .
119 
-         "<img class=\"chart\" src=\"dynamic/custom_snr.png\">" .
120 
-         "</div>";
121 
-}
122 
-
123 
-function createChart($chartFile, $dataItem, $label, $title, $begin,
124 
-                     $end, $lower, $upper, $addTrend, $autoScale) {
125 
-    /*
126 
-    Uses rrdtool to create a chart of specified aredn node data item.
127 
-    Parameters:
128 
-       fileName - name of the created chart file
129 
-       dataItem - data item to be charted
130 
-       label - string containing a label for the item to be charted
131 
-       title - string containing a title for the chart
132 
-       begin - beginning time of the chart data
133 
-       end   - ending time of the data to be charted
134 
-       lower - lower bound for chart ordinate #NOT USED
135 
-       upper - upper bound for chart ordinate #NOT USED
136 
-       addTrend - 0, show only chart data
137 
-                  1, show only a trend line
138 
-                  2, show a trend line and the chart data
139 
-       autoScale - if True, then use vertical axis auto scaling
140 
-           (lower and upper parameters are ignored), otherwise use
141 
-           lower and upper parameters to set vertical axis scale
142 
-    Returns: True if successful, False otherwise
143 
-    */
144 
-
145 
-    # Define path on server to chart files.
146 
-    $chartPath = _CHART_DIRECTORY . $chartFile . ".png";
147 
-
148 
-    # Format the rrdtool chart command.
149 
-
150 
-    # Set chart file name, start time, end time, height, and width.
151 
-    $cmdfmt = "rrdtool graph %s -a PNG -s %s -e %s -w %s -h %s ";
152 
-    $cmd = sprintf($cmdfmt, $chartPath, $begin, $end, _CHART_WIDTH,
153 
-                   _CHART_HEIGHT);
154 
-    $cmdfmt = "-l %s -u %s -r ";
155 
-
156 
-    # Set upper and lower ordinate bounds.
157 
-    if ($lower < $upper) {
158 
-        $cmd .= sprintf($cmdfmt, $lower, $upper);
159 
-    } elseif ($autoScale) {
160 
-        $cmd .= "-A ";
161 
-    }
162 
-    $cmd .= "-Y ";
163 
-
164 
-    # Set the chart ordinate label and chart title.
165 
-    $cmdfmt = "-v %s -t %s ";
166 
-    $cmd .= sprintf($cmdfmt, $label, $title);
167 
-
168 
-    # Define moving average window width.
169 
-    $trendWindow = floor(($end - $begin) / 12);
170 
-
171 
-    # Show the data, or a moving average trend line over
172 
-    # the data, or both.
173 
-    $cmdfmt = "DEF:dSeries=%s:%s:LAST ";
174 
-    $cmd .= sprintf($cmdfmt, _RRD_FILE, $dataItem);
175 
-    if ($addTrend == 0) {
176 
-        $cmd .= "LINE1:dSeries#0400ff ";
177 
-    } elseif ($addTrend == 1) {
178 
-        $cmdfmt = "CDEF:smoothed=dSeries,%s,TREND LINE3:smoothed#ff0000 ";
179 
-        $cmd .= sprintf($cmdfmt, $trendWindow);
180 
-    } elseif ($addTrend == 2) {
181 
-        $cmd .= "LINE1:dSeries#0400ff ";
182 
-        $cmdfmt = "CDEF:smoothed=dSeries,%s,TREND LINE3:smoothed#ff0000 ";
183 
-        #$cmdfmt = "CDEF:smoothed=dSeries,%s,XYZZY LINE3:smoothed#ff0000 ";
184 
-        $cmd .=  sprintf($cmdfmt, $trendWindow);
185 
-    }
186 
-
187 
-    # Execute the formatted rrdtool command in the shell. The rrdtool
188 
-    # command will complete execution before the html image tags get
189 
-    # sent to the browser.  This assures that the charts are available
190 
-    # when the client browser executes the html code that loads the
191 
-    # charts into the document displayed by the client browser.
192 
-    if (_DEBUG) {
193 
-        echo "<p>chart command:<br>" . $cmd . "</p>";
194 
-    }
195 
-    $result = shell_exec($cmd . " 2>&1");
196 
-    if (_DEBUG) {
197 
-        echo "<p>result:<br>" . $result . "</p>";
198 
-    }
199 
-}
200 
-
201 
-?>
202 
-
203 
-</body>
204 
-</html>
Browse code

support for Aredn FW v3.19.3.0

gandolf authored on 03/31/2020 17:38:41
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arednsig/aredn_fw_3_20_3_0/html/arednsig.php
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+<html>
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+<!-- Courtsey ruler
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+12345678901234567890123456789012345678901234567890123456789012345678901234567890
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+-->
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+<head>
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+<style>
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+p {
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+    font: 14px ariel, sans serif;
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+}
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+#errorMsg {
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+    font:bold 18px arial,sans-serif;
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+    color:red;
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+    text-align:center;
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+}
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+.chartContainer {
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+    padding: 2px;
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+}
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+img.chart {
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+    width:100%;
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+}
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+</style>
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+</head>
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+<body>
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+
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+<?php
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+/*
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+ Script: arednsig.php
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+
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+ Description: This scripts generates on the server charts showing
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+ signal data spanning the period supplied by the user.  The script
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+ does the following:
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+    - converts user supplied dates to  epoch time
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+    - gets the times of the first and last data point in the round
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+      robin database (RRD)
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+    - from above validates user supplied begin and end dates
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+    - creates charts of the specified period
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+
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+ Copyright 2020 Jeff Owrey
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+    This program is free software: you can redistribute it and/or modify
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+    it under the terms of the GNU General Public License as published by
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+    the Free Software Foundation, either version 3 of the License, or
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+    (at your option) any later version.
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+
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+    This program is distributed in the hope that it will be useful,
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+    but WITHOUT ANY WARRANTY; without even the implied warranty of
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+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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+    GNU General Public License for more details.
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+
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+    You should have received a copy of the GNU General Public License
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+    along with this program.  If not, see http://www.gnu.org/license.
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+
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+ Revision History
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+   * v20 released 18 Jan 2020 by J L Owrey; first release
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+*/
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+
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+# Define global constants
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+
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+# round robin database file
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+define("_RRD_FILE", str_replace("public_html/arednsig/arednsig.php",
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+                                "database/arednsigData.rrd",
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+                                $_SERVER["SCRIPT_FILENAME"]));
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+# charts html directory
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+define("_CHART_DIRECTORY", str_replace("arednsig.php",
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+                                       "dynamic/",
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+                                       $_SERVER["SCRIPT_FILENAME"]));
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+# standard chart width in pixels
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+define("_CHART_WIDTH", 600);
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+# standard chart height in pixels
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+define("_CHART_HEIGHT", 150);
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+# debug mode
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+define("_DEBUG", false);
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+
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+# Set error handling modes.
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+error_reporting(E_ALL);
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+
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+# Get user supplied chart begin and end dates.
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+$beginDate = $_POST["beginDate"];
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+$endDate =  $_POST["endDate"];
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+
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+# Convert the user supplied dates to epoch time stamps.
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+$beginDateEp = strtotime($beginDate);
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+$endDateEp = strtotime($endDate);
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+
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+# Get the time stamp of the earliest data point in the RRD file.
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+$cmd = sprintf("rrdtool first %s --rraindex 1", _RRD_FILE);
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+$firstDP = shell_exec($cmd);
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+
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+# Get the time stamp of the latest data point in the RRD file.
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+$cmd = sprintf("rrdtool last %s", _RRD_FILE);
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+$lastDP = shell_exec($cmd);
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+
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+# Determine validity of user supplied dates.  User supplied begin
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+# date must be less than user supplied end date.  Furthermore both
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+# dates must be within the range of dates stored in the RRD.
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+if ($beginDateEp > $endDateEp) {
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+    echo "<p id=\"errorMsg\">" .
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+         "End date must be after begin date.</p>";
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+} elseif ($beginDateEp < $firstDP || $endDateEp > $lastDP) {
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+    echo "<p id=\"errorMsg\">" .
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+          "Date range must be between " .
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+          date('m / d / Y', $firstDP) . " and " .
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+          date('m / d / Y', $lastDP) . ".</p>";
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+} else {
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+    # Generate charts from validated user supplied dates.
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+    if (_DEBUG) {
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+        echo "<p>Date range: " . $beginDateEp . " thru " .
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+              $endDateEp . "</p>";
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+    }
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+    createChart('custom_signal', 'S', 'dBm',
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+                'RSSI', $beginDateEp, $endDateEp,
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+                 0, 0, 2, false);
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+    createChart('custom_snr', 'SNR', 'dBm',
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+                'S/N', $beginDateEp, $endDateEp,
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+                 0, 0, 2, false);
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+    # Send html commands to client browser.
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+    echo "<div class=\"chartContainer\">" .
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+         "<img class=\"chart\" src=\"dynamic/custom_signal.png\">" .
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+         "</div>";
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+    echo "<div class=\"chartContainer\">" .
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+         "<img class=\"chart\" src=\"dynamic/custom_snr.png\">" .
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+         "</div>";
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+}
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+
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+function createChart($chartFile, $dataItem, $label, $title, $begin,
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+                     $end, $lower, $upper, $addTrend, $autoScale) {
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+    /*
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+    Uses rrdtool to create a chart of specified aredn node data item.
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+    Parameters:
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+       fileName - name of the created chart file
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+       dataItem - data item to be charted
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+       label - string containing a label for the item to be charted
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+       title - string containing a title for the chart
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+       begin - beginning time of the chart data
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+       end   - ending time of the data to be charted
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+       lower - lower bound for chart ordinate #NOT USED
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+       upper - upper bound for chart ordinate #NOT USED
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+       addTrend - 0, show only chart data
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+                  1, show only a trend line
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+                  2, show a trend line and the chart data
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+       autoScale - if True, then use vertical axis auto scaling
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+           (lower and upper parameters are ignored), otherwise use
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+           lower and upper parameters to set vertical axis scale
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+    Returns: True if successful, False otherwise
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+    */
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+
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+    # Define path on server to chart files.
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+    $chartPath = _CHART_DIRECTORY . $chartFile . ".png";
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+
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+    # Format the rrdtool chart command.
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+
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+    # Set chart file name, start time, end time, height, and width.
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+    $cmdfmt = "rrdtool graph %s -a PNG -s %s -e %s -w %s -h %s ";
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+    $cmd = sprintf($cmdfmt, $chartPath, $begin, $end, _CHART_WIDTH,
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+                   _CHART_HEIGHT);
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+    $cmdfmt = "-l %s -u %s -r ";
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+
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+    # Set upper and lower ordinate bounds.
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+    if ($lower < $upper) {
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+        $cmd .= sprintf($cmdfmt, $lower, $upper);
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+    } elseif ($autoScale) {
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+        $cmd .= "-A ";
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+    }
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+    $cmd .= "-Y ";
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+
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+    # Set the chart ordinate label and chart title.
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+    $cmdfmt = "-v %s -t %s ";
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+    $cmd .= sprintf($cmdfmt, $label, $title);
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+
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+    # Define moving average window width.
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+    $trendWindow = floor(($end - $begin) / 12);
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+
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+    # Show the data, or a moving average trend line over
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+    # the data, or both.
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+    $cmdfmt = "DEF:dSeries=%s:%s:LAST ";
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+    $cmd .= sprintf($cmdfmt, _RRD_FILE, $dataItem);
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+    if ($addTrend == 0) {
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+        $cmd .= "LINE1:dSeries#0400ff ";
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+    } elseif ($addTrend == 1) {
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+        $cmdfmt = "CDEF:smoothed=dSeries,%s,TREND LINE3:smoothed#ff0000 ";
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+        $cmd .= sprintf($cmdfmt, $trendWindow);
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+    } elseif ($addTrend == 2) {
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+        $cmd .= "LINE1:dSeries#0400ff ";
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+        $cmdfmt = "CDEF:smoothed=dSeries,%s,TREND LINE3:smoothed#ff0000 ";
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+        #$cmdfmt = "CDEF:smoothed=dSeries,%s,XYZZY LINE3:smoothed#ff0000 ";
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+        $cmd .=  sprintf($cmdfmt, $trendWindow);
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+    }
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+
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+    # Execute the formatted rrdtool command in the shell. The rrdtool
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+    # command will complete execution before the html image tags get
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+    # sent to the browser.  This assures that the charts are available
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+    # when the client browser executes the html code that loads the
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+    # charts into the document displayed by the client browser.
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+    if (_DEBUG) {
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+        echo "<p>chart command:<br>" . $cmd . "</p>";
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+    }
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+    $result = shell_exec($cmd . " 2>&1");
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+    if (_DEBUG) {
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+        echo "<p>result:<br>" . $result . "</p>";
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+    }
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+}
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+
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+?>
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+
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+</body>
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+</html>