sgminer/API-README

This README contains details about the cgminer RPC API

It also includes some detailed information at the end,
about using miner.php


If you start cgminer with the "--api-listen" option, it will listen on a
simple TCP/IP socket for single string API requests from the same machine
running cgminer and reply with a string and then close the socket each time
If you add the "--api-network" option, it will accept API requests from any
network attached computer.

You can only access the comands that reply with data in this mode.
By default, you cannot access any privileged command that affects the miner -
you will receive an access denied status message see --api-allow below.

You can specify IP addresses/prefixes that are only allowed to access the API
with the "--api-allow" option e.g. --api-allow W:192.168.0.1,10.0.0/24
will allow 192.168.0.1 or any address matching 10.0.0.*, but nothing else
IP addresses are automatically padded with extra '.0's as needed
Without a /prefix is the same as specifying /32
0/0 means all IP addresses.
The 'W:' on the front gives that address/subnet privileged access to commands
that modify cgminer (thus all API commands)
Without it those commands return an access denied status.
See --api-groups below to define other groups like W:
Privileged access is checked in the order the IP addresses were supplied to
"--api-allow"
The first match determines the privilege level.
Using the "--api-allow" option overides the "--api-network" option if they
are both specified
With "--api-allow", 127.0.0.1 is not by default given access unless specified

More groups (like the privileged group W:) can be defined using the
--api-groups command
Valid groups are only the letters A-Z (except R & W are predefined) and are
not case sensitive
The R: group is the same as not privileged access
The W: group is (as stated) privileged access (thus all API commands)
To give an IP address/subnet access to a group you use the group letter
in front of the IP address instead of W: e.g. P:192.168.0/32
An IP address/subnet can only be a member of one group
A sample API group would be:
 --api-groups P:switchpool:enablepool:addpool:disablepool:removepool.poolpriority:*
This would create a group 'P' that can do all current pool commands and all
non-priviliged commands - the '*' means all non-priviledged commands
Without the '*' the group would only have access to the pool commands
Defining multiple groups example:
 --api-groups Q:quit:restart:*,S:save
This would define 2 groups:
 Q: that can 'quit' and 'restart' as well as all non-priviledged commands
 S: that can only 'save' and no other commands

The RPC API request can be either simple text or JSON.

If the request is JSON (starts with '{'), it will reply with a JSON formatted
response, otherwise it replies with text formatted as described further below.

The JSON request format required is '{"command":"CMD","parameter":"PARAM"}'
(though of course parameter is not required for all requests)
where "CMD" is from the "Request" column below and "PARAM" would be e.g.
the CPU/GPU number if required.

An example request in both formats to set GPU 0 fan to 80%:
  gpufan|0,80
  {"command":"gpufan","parameter":"0,80"}

The format of each reply (unless stated otherwise) is a STATUS section
followed by an optional detail section

From API version 1.7 onwards, reply strings in JSON and Text have the
necessary escaping as required to avoid ambiguity - they didn't before 1.7
For JSON the 2 characters '"' and '\' are escaped with a '\' before them
For Text the 4 characters '|' ',' '=' and '\' are escaped the same way

Only user entered information will contain characters that require being
escaped, such as Pool URL, User and Password or the Config save filename,
when they are returned in messages or as their values by the API

For API version 1.4 and later:

The STATUS section is:

 STATUS=X,When=NNN,Code=N,Msg=string,Description=string|

  STATUS=X Where X is one of:
   W - Warning
   I - Informational
   S - Success
   E - Error
   F - Fatal (code bug)

  When=NNN
   Standard long time of request in seconds

  Code=N
   Each unique reply has a unigue Code (See api.c - #define MSG_NNNNNN)

  Msg=string
   Message matching the Code value N

  Description=string
   This defaults to the cgminer version but is the value of --api-description
   if it was specified at runtime.

For API version 1.10 and later:

The list of requests - a (*) means it requires privileged access - and replies are:

 Request       Reply Section  Details
 -------       -------------  -------
 version       VERSION        CGMiner=cgminer, version
                              API=API| version

 config        CONFIG         Some miner configuration information:
                              GPU Count=N, <- the number of GPUs
                              PGA Count=N, <- the number of PGAs
                              CPU Count=N, <- the number of CPUs
                              Pool Count=N, <- the number of Pools
                              ADL=X, <- Y or N if ADL is compiled in the code
                              ADL in use=X, <- Y or N if any GPU has ADL
                              Strategy=Name, <- the current pool strategy
                              Log Interval=N, <- log interval (--log N)
                              Device Code=GPU ICA | <- spaced list of compiled devices

 summary       SUMMARY        The status summary of the miner
                              e.g. Elapsed=NNN,Found Blocks=N,Getworks=N,...|

 pools         POOLS          The status of each pool
                              e.g. Pool=0,URL=http://pool.com:6311,Status=Alive,...|

 devs          DEVS           Each available GPU, PGA and CPU with their details
                              e.g. GPU=0,Accepted=NN,MHS av=NNN,...,Intensity=D|
                              Last Share Time=NNN, <- standand long time in seconds
                               (or 0 if none) of last accepted share
                              Last Share Pool=N, <- pool number (or -1 if none)
                              Will not report PGAs if PGA mining is disabled
                              Will not report CPUs if CPU mining is disabled

 gpu|N         GPU            The details of a single GPU number N in the same
                              format and details as for DEVS

 pga|N         PGA            The details of a single PGA number N in the same
                              format and details as for DEVS
                              This is only available if PGA mining is enabled
                              Use 'pgacount' or 'config' first to see if there are any

 cpu|N         CPU            The details of a single CPU number N in the same
                              format and details as for DEVS
                              This is only available if CPU mining is enabled
                              Use 'cpucount' or 'config' first to see if there are any

 gpucount      GPUS           Count=N| <- the number of GPUs

 pgacount      PGAS           Count=N| <- the number of PGAs
                              Always returns 0 if PGA mining is disabled

 cpucount      CPUS           Count=N| <- the number of CPUs
                              Always returns 0 if CPU mining is disabled

 switchpool|N (*)
               none           There is no reply section just the STATUS section
                              stating the results of switching pool N to the
                              highest priority (the pool is also enabled)
                              The Msg includes the pool URL

 enablepool|N (*)
               none           There is no reply section just the STATUS section
                              stating the results of enabling pool N
                              The Msg includes the pool URL

 addpool|URL,USR,PASS (*)
               none           There is no reply section just the STATUS section
                              stating the results of attempting to add pool N
                              The Msg includes the pool URL
                              Use '\\' to get a '\' and '\,' to include a comma
                              inside URL, USR or PASS

 poolpriority|N,... (*)
               none           There is no reply section just the STATUS section
                              stating the results of changing pool priorities
                              See usage below

 disablepool|N (*)
               none           There is no reply section just the STATUS section
                              stating the results of disabling pool N
                              The Msg includes the pool URL

 removepool|N (*)
               none           There is no reply section just the STATUS section
                              stating the results of removing pool N
                              The Msg includes the pool URL
                              N.B. all details for the pool will be lost

 gpuenable|N (*)
               none           There is no reply section just the STATUS section
                              stating the results of the enable request

 gpudisable|N (*)
               none           There is no reply section just the STATUS section
                              stating the results of the disable request

 gpurestart|N (*)
               none           There is no reply section just the STATUS section
                              stating the results of the restart request

 gpuintensity|N,I (*)
               none           There is no reply section just the STATUS section
                              stating the results of setting GPU N intensity to I

 gpumem|N,V (*)
               none           There is no reply section just the STATUS section
                              stating the results of setting GPU N memoryclock to V MHz

 gpuengine|N,V (*)
               none           There is no reply section just the STATUS section
                              stating the results of setting GPU N clock to V MHz

 gpufan|N,V (*)
               none           There is no reply section just the STATUS section
                              stating the results of setting GPU N fan speed to V%

 gpuvddc|N,V (*)
               none           There is no reply section just the STATUS section
                              stating the results of setting GPU N vddc to V

 save|filename (*)
               none           There is no reply section just the STATUS section
                              stating success or failure saving the cgminer config
                              to filename
                              The filename is optional and will use the cgminer
                              default if not specified

 quit (*)      none           There is no status section but just a single "BYE"
                              reply before cgminer quits

 notify        NOTIFY         The last status and history count of each devices problem
                              This lists all devices including those not supported
                              by the 'devs' command
                              e.g. NOTIFY=0,Name=GPU,ID=0,Last Well=1332432290,...|

 privileged (*)
               none           There is no reply section just the STATUS section
                              stating an error if you do not have privileged access
                              to the API and success if you do have privilege
                              The command doesn't change anything in cgminer

 pgaenable|N (*)
               none           There is no reply section just the STATUS section
                              stating the results of the enable request
                              You cannot enable a PGA if it's status is not WELL
                              This is only available if PGA mining is enabled

 pgadisable|N (*)
               none           There is no reply section just the STATUS section
                              stating the results of the disable request
                              This is only available if PGA mining is enabled

 devdetails    DEVDETAILS     Each device with a list of their static details
                              This lists all devices including those not supported
                              by the 'devs' command
                              e.g. DEVDETAILS=0,Name=GPU,ID=0,Driver=opencl,...|

 restart (*)   none           There is no status section but just a single "RESTART"
                              reply before cgminer restarts

 stats         STATS          Each device or pool that has 1 or more getworks
                              with a list of stats regarding getwork times
                              The values returned by stats may change in future
                              versions thus would not normally be displayed
                              Device drivers are also able to add stats to the
                              end of the details returned

 check|cmd     COMMAND        Exists=Y/N, <- 'cmd' exists in this version
                              Access=Y/N| <- you have access to use 'cmd'

When you enable, disable or restart a GPU or PGA, you will also get Thread messages
in the cgminer status window

The 'poolpriority' command can be used to reset the priority order of multiple
pools with a single command - 'switchpool' only sets a single pool to first priority
Each pool should be listed by id number in order of preference (first = most
preferred)
Any pools not listed will be prioritised after the ones that are listed, in the
priority order they were originally
If the priority change affects the miner's preference for mining, it may switch
immediately

When you switch to a different pool to the current one (including by priority
change), you will get a 'Switching to URL' message in the cgminer status
windows

Obviously, the JSON format is simply just the names as given before the '='
with the values after the '='

If you enable cgminer debug (-D or --debug) you will also get messages showing
details of the requests received and the replies

There are included 4 program examples for accessing the API:

api-example.php - a php script to access the API
  usAge: php api-example.php command
 by default it sends a 'summary' request to the miner at 127.0.0.1:4028
 If you specify a command it will send that request instead
 You must modify the line "$socket = getsock('127.0.0.1', 4028);" at the
 beginning of "function request($cmd)" to change where it looks for cgminer

API.java/API.class
 a java program to access the API (with source code)
  usAge is: java API command address port
 Any missing or blank parameters are replaced as if you entered:
  java API summary 127.0.0.1 4028

api-example.c - a 'C' program to access the API (with source code)
  usAge: api-example [command [ip/host [port]]]
 again, as above, missing or blank parameters are replaced as if you entered:
  api-example summary 127.0.0.1 4028

miner.php - an example web page to access the API
 This includes buttons and inputs to attempt access to the privileged commands
 See the end of this API-README for details of how to tune the display
 and also to use the option to display a multi-rig summary

----------

Feature Changelog for external applications using the API:


API V1.15 (cgminer v2.6.1)

Added API commands:
 'poolpriority'

----------

API V1.14 (cgminer v2.5.0)

Modified API commands:
 'stats' - more icarus timing stats added
 'notify' - include new device comms error counter

The internal code for handling data was rewritten (~25% of the code)
Completely backward compatible

----------

API V1.13 (cgminer v2.4.4)

Added API commands:
 'check'

Support was added to cgminer for API access groups with the --api-groups option
It's 100% backward compatible with previous --api-access commands

----------

API V1.12 (cgminer v2.4.3)

Modified API commands:
 'stats' - more pool stats added

Support for the ModMinerQuad FPGA was added

----------

API V1.11 (cgminer v2.4.2)

Modified API commands:
 'save' no longer requires a filename (use default if not specified)

'save' incorrectly returned status E (error) on success before.
It now correctly returns S (success)

----------

API V1.10 (cgminer v2.4.1)

Added API commands:
 'stats'

N.B. the 'stats' command can change at any time so any specific content
present should not be relied upon.
The data content is mainly used for debugging purposes or hidden options
in cgminer and can change as development work requires

Modified API commands:
 'pools' added "Last Share Time"

----------

API V1.9 (cgminer v2.4.0)

Added API commands:
 'restart'

Modified API commands:
 'notify' corrected invalid JSON

----------

API V1.8 (cgminer v2.3.5)

Added API commands:
 'devdetails'

Support for the ZTex FPGA was added

----------

API V1.7 (cgminer v2.3.4)

Added API commands:
 'removepool'

Modified API commands:
 'pools' added "User"

From API version 1.7 onwards, reply strings in JSON and Text have the
necessary escaping as required to avoid ambiguity
For JSON the 2 characters '"' and '\' are escaped with a '\' before them
For Text the 4 characters '|' ',' '=' and '\' are escaped the same way

----------

API V1.6 (cgminer v2.3.2)

Added API commands:
 'pga'
 'pgaenable'
 'pgadisable'
 'pgacount'

Modified API commands:
 'devs' now includes Icarus and Bitforce FPGA devices
 'notify' added "*" to the front of the name of all numeric error fields
 'config' correct "Log Interval" to use numeric (not text) type for JSON

Support for Icarus and Bitforce FPGAs was added

----------

API V1.5 was not released

----------

API V1.4 (Kano's interim release of cgminer v2.3.1)

Added API commands:
 'notify'

Modified API commands:
 'config' added "Device Code" and "OS"

Added "When" to the STATUS reply section of all commands

----------

API V1.3 (cgminer v2.3.1-2)

Added API commands:
 'addpool'

Modified API commands:
 'devs'/'gpu' added "Total MH" for each device
 'summary' added "Total MH"

----------

API V1.2 (cgminer v2.3.0)

Added API commands:
 'enablepool'
 'disablepool'
 'privileged'

Modified API commands:
 'config' added "Log Interval"

Starting with API V1.2, any attempt to access a command that requires
privileged security, from an IP address that does not have privileged
security, will return an "Access denied" Error Status

----------

API V1.1 (cgminer v2.2.4)

There were no changes to the API commands in cgminer v2.2.4,
however support was added to cgminer for IP address restrictions
with the --api-allow option

----------

API V1.1 (cgminer v2.2.2)

Prior to V1.1, devs/gpu incorrectly reported GPU0 Intensity for all GPUs

Modified API commands:
 'devs'/'gpu' added "Last Share Pool" and "Last Share Time" for each device

----------

API V1.0 (cgminer v2.2.0)

Remove default CPU support

Added API commands:
 'config'
 'gpucount'
 'cpucount'
 'switchpool'
 'gpuintensity'
 'gpumem'
 'gpuengine'
 'gpufan'
 'gpuvddc'
 'save'

----------

API V0.7 (cgminer v2.1.0)

Initial release of the API in the main cgminer git

Commands:
 'version'
 'devs'
 'pools'
 'summary'
 'gpuenable'
 'gpudisable'
 'gpurestart'
 'gpu'
 'cpu'
 'gpucount'
 'cpucount'
 'quit'

----------------------------------------

miner.php
=========

miner.php is a PHP based interface to the cgminer RPC API
(referred to simply as the API below)

It can show rig details, summaries and input fields to allow you to change
cgminer
You can also create custom summary pages with it

It has two levels to the security:
1) cgminer can be configured to allow or disallow API access and access level
   security for miner.php
2) miner.php can be configured to allow or disallow privileged cgminer
   access, if cgminer is configured to allow privileged access for miner.php

---------

To use miner.php requires a web server with PHP

Basics: On xubuntu 11.04, to install apache2 and php, the commands are:
 sudo apt-get install apache2
 sudo apt-get install php5
 sudo /etc/init.d/apache2 reload

On Fedora 17:
 yum install httpd php
 systemctl restart httpd.service
 systemctl enable httpd.service --system

On windows there are a few options.
Try one of these (I've never used either one)
 http://www.apachefriends.org/en/xampp.html
 http://www.wampserver.com/en/

---------

The basic cgminer option to enable the API is:

 --api-listen

or in your cgminer.conf

 "api-listen" : true,

(without the ',' on the end if it is the last item)

If the web server is running on the cgminer computer, the above
is the only change required to give miner.php basic access to
the cgminer API

-

If the web server runs on a different computer to cgminer,
you will also need to tell cgminer to allow the web server
to access cgminer's API and tell miner.php where cgminer is

Assuming a.b.c.d is the IP address of the web server, you
would add the following to cgminer:

 --api-listen --api-allow a.b.c.d

or in your cgminer.conf

 "api-listen" : true,
 "api-allow" : "a.b.c.d",

to tell cgminer to give the web server read access to the API

You also need to tell miner.php where cgminer is.
Assuming cgminer is at IP address e.f.g.h, then you would
edit miner.php and change the line

 $rigs = array('127.0.0.1:4028');

to

 $rigs = array('e.f.g.h:4028');

See --api-network or --api-allow for more access details
and how to give write access

---------

Once you have a web server with PHP running

 copy your miner.php to the main web folder

On Xubuntu 11.04
 /var/www/

On Fedora 17
 /var/www/html/

On Windows
 see your windows Web/PHP documentation

Assuming the IP address of the web server is a.b.c.d
Then in your web browser go to:

 http://a.b.c.d/miner.php

Done :)

---------

The rest of this documentation deals with the more complex
functions of miner.php, using myminer.php, creaing custom
summaries and displaying multiple cgminer rigs

---------

If you create a file called myminer.php in the same web folder
where you put miner.php, miner.php will load it when it runs

This is useful, to put any changes you need to make to miner.php
instead of changing miner.php
Thus if you update/get a new miner.php, you won't lose the changes
you have made if you put all your changes in myminer.php
(and don't change miner.php at all)

A simple example myminer.php that defines 2 rigs
(that I will keep referring to further below) is:

<?php
#
$rigs = array('192.168.0.100:4028:A', '192.168.0.102:4028:B');
#
?>

Changes in myminer.php superscede what is in miner.php
However, this is only valid for variables in miner.php before the
2 lines where myminer.php is included by miner.php:

 if (file_exists('myminer.php'))
  include_once('myminer.php');
 
Every variable in miner.php above those 2 lines, can be changed by
simply defining them in your myminer.php

So although miner.php originally contains the line

 $rigs = array('127.0.0.1:4028');

if you created the example myminer.php given above, it would actually
change the value of $rigs that is used when miner.php is running
i.e. you don't have to remove or comment out the $rigs line in miner.php
It will be superceded by myminer.php

---------

The example.php above also shows how to define more that one rig to
be shown my miner.php

Each rig string is 2 or 3 values seperated by colons ':'
They are simply an IP address or host name, followed by the
port number (usually 4028) and an optional Name string

miner.php displays rig buttons that will show the defails of a single
rig when you click on it - the button shows either the rig number,
or the 'Name' string if you provide it

PHP arrays contain each string seperated by a comma, but no comma after
the last one

So an example for 3 rigs would be:

 $rigs = array('192.168.0.100:4028:A', '192.168.0.102:4028:B', '192.168.0.110:4028:C');

Of course each of the rigs listed would also have to have the API
running and be set to allow the web server to access the API - as
explained before

---------

So basically, any variable explained below can be put in myminer.php
if you wanted to set it to something different to it's default value
and did not want to change miner.php itself every time you updated it

Below is each variable that can be changed and an explanation of each

---------

Default:
 $readonly = false;

Set $readonly to true to force miner.php to be readonly
This means it won't allow you to change cgminer even if the cgminer API
options allow it to

If you set $readonly to false then it will check cgminer 'privileged'
and will show input fields and buttons on the single rig page
allowing you to change devices, pools and even quit or restart
cgminer

However, if the 'privileged' test fails, the code will set $readonly to
true

---------

Default:
 $notify = true;

Set $notify to false to NOT attempt to display the notify command
table of data

Set $notify to true to attempt to display the notify command on
the single rig page
If your older version of cgminer returns an 'Invalid command'
coz it doesn't have notify - it just shows the error status table

---------

Default:
 $checklastshare = true;

Set $checklastshare to true to do the following checks:
If a device's last share is 12x expected ago then display as an error
If a device's last share is 8x expected ago then display as a warning
If either of the above is true, also display the whole line highlighted
This assumes shares are 1 difficulty shares

Set $checklastshare to false to not do the above checks

'expected' is calculated from the device MH/s value
So for example, a device that hashes at 380MH/s should (on average)
find a share every 11.3s
If the last share was found more than 11.3 x 12 seconds (135.6s) ago,
it is considered an error and highlighted
If the last share was found more than 11.3 x 8 seconds (90.4s) ago,
it is considered a warning and highlighted

The default highlighting is very subtle

---------

Default:
 $poolinputs = false;

Set $poolinputs to true to show the input fields for adding a pool
and changing the pool priorities on a single rig page
However, if $readonly is true, it will not display them

---------

Default:
 $rigs = array('127.0.0.1:4028');

Set $rigs to an array of your cgminer rigs that are running
 format: 'IP:Port' or 'Host:Port' or 'Host:Port:Name'
If you only have one rig, it will just show the detail of that rig
If you have more than one rig it will show a summary of all the rigs
 with buttons to show the details of each rig -
 the button contents will be 'Name' rather than rig number, if you
 specify 'Name'
e.g. $rigs = array('127.0.0.1:4028','myrig.com:4028:Sugoi');

---------

Default:
 $rigtotals = true;
 $forcerigtotals = false;

Set $rigtotals to true to display totals on the single rig page
'false' means no totals (and ignores $forcerigtotals)

If $rigtotals is true, all data is also right aligned
With false, it's as before, left aligned

This option is just here to allow people to set it to false
if they prefer the old non-total display when viewing a single rig

Also, if there is only one line shown in any section, then no
total will be shown (to save screen space)
You can force it to always show rig totals on the single rig page,
even if there is only one line, by setting $forcerigtotals = true;

---------

Default:
 $socksndtimeoutsec = 10;
 $sockrcvtimeoutsec = 40;

The numbers are integer seconds

The defaults should be OK for most cases
However, the longer SND is, the longer you have to wait while
php hangs if the target cgminer isn't runnning or listening

RCV should only ever be relevant if cgminer has hung but the
API thread is still running, RCV would normally be >= SND

Feel free to increase SND if your network is very slow
or decrease RCV if that happens often to you

Also, on some windows PHP, apparently the $usec is ignored
(so usec can't be specified)

---------

Default:
 $hidefields = array();

List of fields NOT to be displayed
You can use this to hide data you don't want to see or don't want
shown on a public web page
The list of sections are:
 SUMMARY, POOL, PGA, GPU, NOTIFY, CONFIG, NOTIFY, DEVDETAILS, DEVS
See the web page for the list of field names (the table headers)
It is an array of 'SECTION.Field Name' => 1

This example would hide the slightly more sensitive pool information:
Pool URL and pool username:
 $hidefields = array('POOL.URL' => 1, 'POOL.User' => 1);

If you just want to hide the pool username:
 $hidefields = array('POOL.User' => 1);

---------

Default:
 $ignorerefresh = false;
 $changerefresh = true;
 $autorefresh = 0;

Auto-refresh of the page (in seconds) - integers only

$ignorerefresh = true/false always ignore refresh parameters
$changerefresh = true/false show buttons to change the value
$autorefresh = default value, 0 means dont auto-refresh

---------

Default:
 $placebuttons = 'top';

Where to place the Refresh, Summary, Custom Pages, Quit, etc. buttons

Valid values are: 'top' 'bot' 'both'
 anything else means don't show them - case sensitive

---------

Default:
 $miner_font_family = 'verdana,arial,sans';
 $miner_font_size = '13pt';

Change these to set the font and font size used on the web page

---------

Default:
 $colouroverride = array();

Use this to change the web page colour scheme

See $colourtable in miner.php for the list of possible names to change

Simply put in $colouroverride, just the colours you wish to change

e.g. to change the colour of the header font and background
you could do the following:

 $colouroverride = array(
	'td.h color'		=> 'green',
	'td.h background'	=> 'blue'
 );

---------

Default:
 $allowcustompages = true;

Should we allow custom pages?
(or just completely ignore them and don't display the buttons)

---------

OK this part is more complex: Custom Summary Pages

A custom summary page in an array of 'section' => array('FieldA','FieldB'...)

The section defines what data you want in the summary table and the Fields
define what data you want shown from that section

Standard sections are:
 SUMMARY, POOL, PGA, GPU, NOTIFY, CONFIG, NOTIFY, DEVDETAILS, DEVS, STATS

Fields are the names as shown on the headers on the normal pages

Fields can be 'name=new name' to display 'name' with a different heading
'new name'

There are also now joined sections:
 SUMMARY+POOL, SUMMARY+DEVS, SUMMARY+CONFIG, DEVS+NOTIFY, DEVS+DEVDETAILS

These sections are an SQL join of the two sections and the fields in them
are named section.field where section. is the section the field comes from
See the example further down

Also note:
- empty tables are not shown
- empty columns (e.g. an unknown field) are not shown
- missing field data shows as blank
- the field name '*' matches all fields except in joined sections
  (useful for STATS)

There are 2 hard coded sections:
 DATE - displays a date table like 'Summary'
 RIGS - displays a rig table like 'Summary'

Each custom summary requires a second array, that can be empty, listing fields
to be totaled for each section
If there is no matching total data, no total will show

---------

Looking at the Mobile example:

 $mobilepage = array(
  'DATE' => null,
  'RIGS' => null,
  'SUMMARY' => array('Elapsed', 'MHS av', 'Found Blocks=Blks', 
			Accepted', 'Rejected=Rej', 'Utility'),
  'DEVS+NOTIFY' => array('DEVS.Name=Name', 'DEVS.ID=ID', 'DEVS.Status=Status',
			'DEVS.Temperature=Temp', 'DEVS.MHS av=MHS av',
			'DEVS.Accepted=Accept', 'DEVS.Rejected=Rej',
			'DEVS.Utility=Utility', 'NOTIFY.Last Not Well=Not Well'),
  'POOL' => array('POOL', 'Status', 'Accepted', 'Rejected=Rej', 'Last Share Time'));

 $mobilesum = array(
  'SUMMARY' => array('MHS av', 'Found Blocks', 'Accepted', 'Rejected', 'Utility'),
  'DEVS+NOTIFY' => array('DEVS.MHS av', 'DEVS.Accepted', 'DEVS.Rejected', 'DEVS.Utility'),
  'POOL' => array('Accepted', 'Rejected'));

 $customsummarypages = array('Mobile' => array($mobilepage, $mobilesum));

This will show 5 tables (according to $mobilepage)
Each table will have the chosen details for all the rigs specified in $rigs

 DATE
	A single box with the web server's current date and time

 RIGS
	A table of the rigs: description, time, versions etc

 SUMMARY

	This will use the API 'summary' command and show the selected fields:
		Elapsed, MHS av, Found Blocks, Accepted, Rejected and Utility
	However, 'Rejected=Rej' means that the header displayed for the 'Rejected'
	field will be 'Rej', instead of 'Rejected' (to save space)
	Same for 'Found Blocks=Blks' - to save space

 DEVS+NOTIFY

	This will list each of the devices on each rig and display the list of
	fields as shown
	It will also include the 'Last Not Well' field from the 'notify' command
	so you know when the device was last not well

	You will notice that you need to rename each field e.g. 'DEVS.Name=Name'
	since each field name in the join between DEVS and NOTIFY is actually
	section.fieldname, not just fieldname

	The join code automatically adds 2 fields to each GPU device: 'Name' and 'ID'
	They don't exist in the API 'devs' output but you can correctly calculate
	them from the GPU device data
	These two fields are used to join DEVS to NOTIFY i.e. find the NOTIFY
	record that has the same Name and ID as the DEVS record and join them

 POOL

	This will use the API 'pools' command and show the selected fields:
		POOL, Status, Accepted, Rejected, Last Share Time
	Again, I renamed the 'Rejected' field using 'Rejected=Rej', to save space

$mobilesum lists the sections and fields that should have a total
You can't define them for 'DATE' or 'RIGS' since they are hard coded tables
The example given:

 SUMMARY
	Show a total at the bottom of the columns for:
		MHS av, Found Blocks, Accepted, Rejected, Utility

	Firstly note that you use the original name i.e. for 'Rejected=Rej'
	you use 'Rejected', not 'Rej' and not 'Rejected=Rej'

	Secondly note that it simply adds up the fields
	If you ask for a total of a string field you will get the numerical
	sum of the string data

 DEVS+NOTIFY

	Simply note in this join example that you must use the original field
	names which are section.fieldname, not just fieldname

 POOL
	Show a total at the bottom of the columns for:
		Accepted and Rejected

	Again remember to use the original field name 'Rejected'