[thirdparty/cups.git] / doc / help / whatsnew.html

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<!-- SECTION: Getting Started -->
<HEAD>
	<TITLE>What's New in CUPS 1.4</TITLE>
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</HEAD>
<BODY>

<H1 CLASS="title">What's New in CUPS 1.4</H1>

<P>CUPS 1.4 adds over 67 changes and new features to CUPS 1.3.x. This page provides a high-level outline of these changes. If you have never used CUPS before, read the <A HREF="overview.html">"Overview of CUPS"</A> document instead.</P>

<H2 CLASS="title"><A NAME="COMMANDS">Commands</A></H2>

<OL START="1">

	<LI><EM>accept and reject;</EM> the accept and reject commands have been officially renamed to cupsaccept and cupsreject. The old names are still supported via symlinks.</LI>

	<LI><EM>cupsdisable and cupsenable;</EM> the cupsdisable command now supports a --hold option to stop printing after the current job and the cupsenable command now supports a --release option to release pending jobs for printing.</LI>

	<LI><EM>cupsfilter;</EM> the cupsfilter program now supports filtering of already-queued print job files and can also run printer-specific filters specified in the PPD file.</LI>

	<LI><EM>cupstestdsc;</EM> the cupstestdsc utility has been improved to better detect problems with PostScript print files.</LI>

	<LI><EM>cupstestppd;</EM> the cupstestppd utility has been improved to test new PPD keywords and better detect impossible contraints.</LI>

	<LI><EM>lpadmin;</EM> the lpadmin command now supports options to hold and release new jobs on a printer or all printers.</LI>

	<LI><EM>lpoptions;</EM> the lpoptions command now describes custom options and their parameters.</LI>

	<LI><EM>lppasswd;</EM> the lppasswd program is no longer installed setuid by default.</LI>

	<LI><EM>lpstat;</EM> the lpstat command now supports a -H option to show the current default server and no longer slows down when a printer is specified.</LI>

</OL>


<H2 CLASS="title"><A NAME="WEBIF">Web Interface</A></H2>

<OL START="10">

	<LI><EM>Look-n-feel;</EM> the web interface has been given a new look.</LI>

	<LI><EM>PHP support;</EM> the "php-cgi" program is used, when available, to process PHP pages in the CUPS web interface.</LI>

	<LI><EM>Printer configuration;</EM> improvements have been made to the add and modify printer pages.</LI>

	<LI><EM>Printer options;</EM> the Set Default Options page now provides a "query" button that queries the default and installed options from the printer.</LI>

	<LI><EM>Printer sharing;</EM> the "share printer" and "unshare printer" buttons are now only shown when printer sharing is enabled in the scheduler.</LI>

	<LI><EM>Security;</EM> the web interface has been updated to support authentication for printing of test pages and RSS subscription operations.</LI>

	<LI><EM>Server settings;</EM> the Administration page now provides access to common "advanced" server settings.</LI>

</OL>


<H2 CLASS="title"><A NAME="NETWORKING">Networking</A></H2>

<OL START="17">

	<LI><EM>Bonjour (DNS-SD) printing support;</EM> a new mdns backend provides Bonjour-based printer discovery and the ipp, lpd, and socket backends now support Bonjour address resolution.</LI>

	<LI><EM>Bonjour (DNS-SD) perforance tuning;</EM> the scheduler now only uses a single file descriptor for printer sharing. It previously used one per printer.</LI>

	<LI><EM>Bonjour (DNS-SD) web interface registry;</EM> when remote access is enabled, the scheduler can register the web interface for easier access.</LI>

	<LI><EM>LPD client support;</EM> the cups-lpd mini-daemon now provides the document-name for print jobs and supports specification of a CUPS server.</LI>

	<LI><EM>PWG Port Monitor MIB;</EM> the snmp backend now supports the PWG Port Monitor MIB to better choose the device URI to use.</LI>

	<LI><EM>SNMP-based monitoring;</EM> the ipp, lpd, and socket backends now report supply levels and printer status using SNMP queries.</LI>

</OL>


<H2 CLASS="title"><A NAME="IPP">IPP Support</A></H2>

<OL START="23">

	<LI><EM>IPP/2.x support;</EM> CUPS now conforms to the draft IPP/2.0 and IPP/2.1 specifications.</LI>

	<LI><EM>CUPS-Add-Modify-Printer operation;</EM> the scheduler now supports setting the printer-state-reasons attribute using this operation.</LI>

	<LI><EM>CUPS-Get-Document operation;</EM> the scheduler now supports a "get document" operation to download files from a print job.</LI>

	<LI><EM>Device location;</EM> the scheduler and backend discovery interface now support a device-location attribute.</LI>

	<LI><EM>Hold-New-Jobs and Release-Held-New-Jobs operations;</EM> the scheduler now supports the Hold-New-Jobs and Release-Held-New-Jobs operations.</LI>

</OL>


<H2 CLASS="title"><A NAME="SCHEDULER">Scheduler</A></H2>

<OL START="28">

	<LI><EM>Access control;</EM> the scheduler now supports multiple addresses in Allow and Deny lines. It also now returns a HTTP 403 (forbidden) status when a user authenticates successfully but is not allowed to perform an operation.</LI>

	<LI><EM>Access logging;</EM> the scheduler now supports an AccessLogLevel directive to control what is logged in the access_log file.</LI>

	<LI><EM>Configuration files;</EM> the default cupsd.conf file now provides an "authenticated" policy for easy authenticated sharing of printers.</LI>

	<LI><EM>Default LogLevel;</EM> the default LogLevel is now "warn" instead of "info".</LI>

	<LI><EM>Automatic debug logging;</EM> the scheduler now records up to the last N (default 200) debug messages for failed print jobs.</LI>

	<LI><EM>Default paper size;</EM> the scheduler now supports a DefaultPaperSize directive to override the default paper size defined by the locale or libpaper configuration.</LI>

	<LI><EM>Encryption support;</EM> the scheduler now supports a SSLOptions directive to optionally support Windows clients in "FIPS" mode. It also now loads both the server and CA certificates (if present) from the ServerCertificate file.</LI>

	<LI><EM>Error logging;</EM> the scheduler now logs unsuccessful operations as errors in the error_log file.</LI>

	<LI><EM>Error policies;</EM> the scheduler now supports a retry-current-job error policy that retries the current job immediately.</LI>

	<LI><EM>Fatal error handling;</EM> the scheduler now supports a FatalErrors directive to control which startup errors should be considered fatal.</LI>

	<LI><EM>Filter command-line;</EM> the scheduer now passes the job-originating-host-name attribute as a CUPS option to filters and backends.</LI>

	<LI><EM>Filter environment;</EM> the scheduler now includes CUPS_JOBTYPE, PRINTER_INFO, and PRINTER_LOCATION variables in the environment passed to filters and backends.</LI>

	<LI><EM>Job progress;</EM> the scheduler now supports a job-media-progress attribute to track the printing progress of each page.</LI>

	<LI><EM>MIME database;</EM> MIME types now support a priority attribute to override the default (alphabetical) rules of precedence.</LI>

	<LI><EM>Page logging;</EM> the scheduler now supports a <code>PageLogFormat</code> directive to control the format of the page_log file.</LI>

	<LI><EM>PAM support;</EM> the scheduler now sets more PAM attributes to better support third-party authentication schemes.</LI>

	<LI><EM>PDF job ticket support;</EM> the scheduler now supports cupsJobTicket comments at the beginning of PDF print jobs.</LI>

	<LI><EM>Performance tuning;</EM> the scheduler now coalesces  configuration and state file changes to reduce the amount of disk activity and caches printer attributes to further reduce startup time.</LI>

	<LI><EM>Printcap support;</EM> the scheduler no longer clears the printcap file when shutting down, and can now create XML "plist" printcap files as well.</LI>

	<LI><EM>RSS subscriptions;</EM> the scheduler now starts the notifier for RSS subscriptions after creation so the feed is available immediately.</LI>

	<LI><EM>Sandbox support;</EM> the scheduler now runs child processes using restrictive policies on Mac OS X for improved security and job isolation.</LI>

	<LI><EM>Test option;</EM> the scheduler now supports a test mode via the "-t" option.</LI>

</OL>


<H2 CLASS="title"><A NAME="DRIVERS">Printer Drivers</A></H2>

<OL START="50">

	<LI><EM>Device discovery;</EM> the cups-deviced helper now runs backends in parallel for faster discovery and streams the results of discovery as the backends provide them.</LI>

	<LI><EM>Driver development kit;</EM> the CUPS DDK is now a standard part of CUPS.</LI>

	<LI><EM>Driver information file support;</EM> the cups-driverd helper program now directly supports PPD compiler driver information files.</LI>

	<LI><EM>Dynamic PPD support;</EM> drivers can now set PPD keywords dynamically using <code>PPD:</code> messages.</LI>

	<LI><EM>Generic PostScript command filter;</EM> a new CUPS command file filter for PostScript printers provides auto-configuration, self-test page, and status and supply level reporting functions.</LI>

	<LI><EM>New printer drivers;</EM> new generic PostScript and PCL drivers provide improved support for laser printers, the CUPS DDK drivers offer support for many HP DesignJet printers, and new label drivers offer support for Seiko and Tharo label printers.</LI>

	<LI><EM>PJL support;</EM> the cupsPJLDisplay PPD attribute controls the PJL commands used to display the current user and job on the printer.</LI>

	<LI><EM>PPD compiler improvements;</EM> the PPD compiler now supports Mac OS X .strings files, OID query strings, conditional directives, long file names, and a test mode. It also fixes many other bugs from the CUPS DDK 1.2.3 release.</LI>

	<LI><EM>USB printer support;</EM> the usb backend now uses libusb when available to allow it to better work with third-party scanning and printing solutions.</LI>

</OL>


<H2 CLASS="title"><A NAME="FILTERS">Print Filters</A></H2>

<OL START="59">

	<LI><EM>Banner filter;</EM> the bundled banner ("job-sheets") pages are now generated using a new banner filter provides easier customization and better support for UTF-8 text.</LI>

	<LI><EM>Image filters;</EM> the standard image filters now support image files larger than 2GB.</LI>

	<LI><EM>PDF filter;</EM> the pdftops filter has been replaced with a wrapper program that runs the Xpdf, poppler, or Ghostscript PDF to PostScript utilities.</LI>

</OL>


<H2 CLASS="title"><A NAME="CUPSAPI">CUPS API</A></H2>

<OL START="62">

	<LI><EM>Backend API;</EM> a new cupsBackendReport function is provided to report a device from a backend and handles any needed quoting of the make-and-model, info, device-id, and location strings.</LI>

	<LI><EM>Device discovery;</EM> the new <code>cupsGetDevices</code> function streams discovered devices to an application-provided callback function.</LI>

	<LI><EM>IPP API;</EM> the IPP read and write functions no longer use a large stack-based buffer when reading and writing IPP attributes.</LI>

	<LI><EM>PPD support;</EM> several new functions are provided: cupsGetPPD3, cupsResolveConflicts, ppdInstallableConflict, ppdLocalizeAttr, ppdLocalizeMarkerName and ppdPageSizeLimits.</LI>

	<LI><EM>Side-Channel API;</EM> new cupsSideChannelSNMPGet and cupsSideChannelSNMPWalk functions allow printer drivers to do SNMP queries via the standard network backends.</LI>

	<LI><EM>Streaming API;</EM> a new streaming request API provides asynchronous job creation and request submission.</LI>

</OL>


</BODY>
</HTML>
Commit	Line	Data
ef416fc2	1	<HTML>
	2	<!-- SECTION: Getting Started -->
	3	<HEAD>
01ce6322	4	<TITLE>What's New in CUPS 1.4</TITLE>
178cb736	5	<LINK REL="STYLESHEET" TYPE="text/css" HREF="../cups-printable.css">
ef416fc2	6	</HEAD>
	7	<BODY>
	8
178cb736 MS	9	<H1 CLASS="title">What's New in CUPS 1.4</H1>
	10
	11	<P>CUPS 1.4 adds over 67 changes and new features to CUPS 1.3.x. This page provides a high-level outline of these changes. If you have never used CUPS before, read the <A HREF="overview.html">"Overview of CUPS"</A> document instead.</P>
ef416fc2	12
01ce6322	13	<H2 CLASS="title"><A NAME="COMMANDS">Commands</A></H2>
ef416fc2	14
01ce6322	15	<OL START="1">
ef416fc2	16
4b3f67ff	17	<LI><EM>accept and reject;</EM> the accept and reject commands have been officially renamed to cupsaccept and cupsreject. The old names are still supported via symlinks.</LI>
58dc1933	18
61cf44e2 MS	19	<LI><EM>cupsdisable and cupsenable;</EM> the cupsdisable command now supports a --hold option to stop printing after the current job and the cupsenable command now supports a --release option to release pending jobs for printing.</LI>
61cf44e2 MS	20
58dc1933	21	<LI><EM>cupsfilter;</EM> the cupsfilter program now supports filtering of already-queued print job files and can also run printer-specific filters specified in the PPD file.</LI>
ef416fc2	22
58dc1933	23	<LI><EM>cupstestdsc;</EM> the cupstestdsc utility has been improved to better detect problems with PostScript print files.</LI>
ef416fc2	24
58dc1933	25	<LI><EM>cupstestppd;</EM> the cupstestppd utility has been improved to test new PPD keywords and better detect impossible contraints.</LI>
ef416fc2	26
58dc1933	27	<LI><EM>lpadmin;</EM> the lpadmin command now supports options to hold and release new jobs on a printer or all printers.</LI>
757d2cad	28
58dc1933 MS	29	<LI><EM>lpoptions;</EM> the lpoptions command now describes custom options and their parameters.</LI>
	30
	31	<LI><EM>lppasswd;</EM> the lppasswd program is no longer installed setuid by default.</LI>
	32
	33	<LI><EM>lpstat;</EM> the lpstat command now supports a -H option to show the current default server and no longer slows down when a printer is specified.</LI>
f7deaa1a	34
01ce6322	35	</OL>
a74454a7	36
ef416fc2	37
01ce6322	38	<H2 CLASS="title"><A NAME="WEBIF">Web Interface</A></H2>
ef416fc2	39
61cf44e2	40	<OL START="10">
757d2cad	41
58dc1933	42	<LI><EM>Look-n-feel;</EM> the web interface has been given a new look.</LI>
f7deaa1a	43
58dc1933	44	<LI><EM>PHP support;</EM> the "php-cgi" program is used, when available, to process PHP pages in the CUPS web interface.</LI>
ef416fc2	45
01ce6322	46	<LI><EM>Printer configuration;</EM> improvements have been made to the add and modify printer pages.</LI>
ef416fc2	47
58dc1933	48	<LI><EM>Printer options;</EM> the Set Default Options page now provides a "query" button that queries the default and installed options from the printer.</LI>
ef416fc2	49
58dc1933	50	<LI><EM>Printer sharing;</EM> the "share printer" and "unshare printer" buttons are now only shown when printer sharing is enabled in the scheduler.</LI>
ef416fc2	51
58dc1933	52	<LI><EM>Security;</EM> the web interface has been updated to support authentication for printing of test pages and RSS subscription operations.</LI>
f7deaa1a	53
58dc1933	54	<LI><EM>Server settings;</EM> the Administration page now provides access to common "advanced" server settings.</LI>
f7deaa1a	55
01ce6322	56	</OL>
f7deaa1a	57
757d2cad	58
01ce6322	59	<H2 CLASS="title"><A NAME="NETWORKING">Networking</A></H2>
757d2cad	60
61cf44e2	61	<OL START="17">
757d2cad	62
01ce6322	63	<LI><EM>Bonjour (DNS-SD) printing support;</EM> a new mdns backend provides Bonjour-based printer discovery and the ipp, lpd, and socket backends now support Bonjour address resolution.</LI>
757d2cad	64
01ce6322	65	<LI><EM>Bonjour (DNS-SD) perforance tuning;</EM> the scheduler now only uses a single file descriptor for printer sharing. It previously used one per printer.</LI>
f7deaa1a	66
58dc1933	67	<LI><EM>Bonjour (DNS-SD) web interface registry;</EM> when remote access is enabled, the scheduler can register the web interface for easier access.</LI>
f7deaa1a	68
58dc1933	69	<LI><EM>LPD client support;</EM> the cups-lpd mini-daemon now provides the document-name for print jobs and supports specification of a CUPS server.</LI>
f7deaa1a	70
58dc1933	71	<LI><EM>PWG Port Monitor MIB;</EM> the snmp backend now supports the PWG Port Monitor MIB to better choose the device URI to use.</LI>
757d2cad	72
58dc1933	73	<LI><EM>SNMP-based monitoring;</EM> the ipp, lpd, and socket backends now report supply levels and printer status using SNMP queries.</LI>
757d2cad	74
01ce6322	75	</OL>
757d2cad	76
757d2cad	77
01ce6322	78	<H2 CLASS="title"><A NAME="IPP">IPP Support</A></H2>
f7deaa1a	79
61cf44e2	80	<OL START="23">
f7deaa1a	81
c168a833 MS	82	<LI><EM>IPP/2.x support;</EM> CUPS now conforms to the draft IPP/2.0 and IPP/2.1 specifications.</LI>
c168a833 MS	83
58dc1933	84	<LI><EM>CUPS-Add-Modify-Printer operation;</EM> the scheduler now supports setting the printer-state-reasons attribute using this operation.</LI>
757d2cad	85
58dc1933	86	<LI><EM>CUPS-Get-Document operation;</EM> the scheduler now supports a "get document" operation to download files from a print job.</LI>
757d2cad	87
58dc1933	88	<LI><EM>Device location;</EM> the scheduler and backend discovery interface now support a device-location attribute.</LI>
757d2cad	89
58dc1933	90	<LI><EM>Hold-New-Jobs and Release-Held-New-Jobs operations;</EM> the scheduler now supports the Hold-New-Jobs and Release-Held-New-Jobs operations.</LI>
757d2cad	91
01ce6322	92	</OL>
757d2cad	93
bc44d920	94
01ce6322	95	<H2 CLASS="title"><A NAME="SCHEDULER">Scheduler</A></H2>
757d2cad	96
c168a833	97	<OL START="28">
58dc1933 MS	98
58dc1933 MS	99	<LI><EM>Access control;</EM> the scheduler now supports multiple addresses in Allow and Deny lines. It also now returns a HTTP 403 (forbidden) status when a user authenticates successfully but is not allowed to perform an operation.</LI>
757d2cad	100
58dc1933	101	<LI><EM>Access logging;</EM> the scheduler now supports an AccessLogLevel directive to control what is logged in the access_log file.</LI>
757d2cad	102
01ce6322	103	<LI><EM>Configuration files;</EM> the default cupsd.conf file now provides an "authenticated" policy for easy authenticated sharing of printers.</LI>
757d2cad	104
58dc1933	105	<LI><EM>Default LogLevel;</EM> the default LogLevel is now "warn" instead of "info".</LI>
757d2cad	106
178cb736 MS	107	<LI><EM>Automatic debug logging;</EM> the scheduler now records up to the last N (default 200) debug messages for failed print jobs.</LI>
178cb736 MS	108
58dc1933	109	<LI><EM>Default paper size;</EM> the scheduler now supports a DefaultPaperSize directive to override the default paper size defined by the locale or libpaper configuration.</LI>
757d2cad	110
58dc1933	111	<LI><EM>Encryption support;</EM> the scheduler now supports a SSLOptions directive to optionally support Windows clients in "FIPS" mode. It also now loads both the server and CA certificates (if present) from the ServerCertificate file.</LI>
bc44d920	112
58dc1933	113	<LI><EM>Error logging;</EM> the scheduler now logs unsuccessful operations as errors in the error_log file.</LI>
757d2cad	114
58dc1933	115	<LI><EM>Error policies;</EM> the scheduler now supports a retry-current-job error policy that retries the current job immediately.</LI>
757d2cad	116
58dc1933	117	<LI><EM>Fatal error handling;</EM> the scheduler now supports a FatalErrors directive to control which startup errors should be considered fatal.</LI>
757d2cad	118
58dc1933	119	<LI><EM>Filter command-line;</EM> the scheduer now passes the job-originating-host-name attribute as a CUPS option to filters and backends.</LI>
757d2cad	120
58dc1933	121	<LI><EM>Filter environment;</EM> the scheduler now includes CUPS_JOBTYPE, PRINTER_INFO, and PRINTER_LOCATION variables in the environment passed to filters and backends.</LI>
757d2cad	122
58dc1933	123	<LI><EM>Job progress;</EM> the scheduler now supports a job-media-progress attribute to track the printing progress of each page.</LI>
01ce6322	124
58dc1933	125	<LI><EM>MIME database;</EM> MIME types now support a priority attribute to override the default (alphabetical) rules of precedence.</LI>
01ce6322	126
58dc1933	127	<LI><EM>Page logging;</EM> the scheduler now supports a <code>PageLogFormat</code> directive to control the format of the page_log file.</LI>
01ce6322	128
58dc1933	129	<LI><EM>PAM support;</EM> the scheduler now sets more PAM attributes to better support third-party authentication schemes.</LI>
01ce6322	130
58dc1933	131	<LI><EM>PDF job ticket support;</EM> the scheduler now supports cupsJobTicket comments at the beginning of PDF print jobs.</LI>
01ce6322	132
58dc1933	133	<LI><EM>Performance tuning;</EM> the scheduler now coalesces configuration and state file changes to reduce the amount of disk activity and caches printer attributes to further reduce startup time.</LI>
01ce6322	134
58dc1933	135	<LI><EM>Printcap support;</EM> the scheduler no longer clears the printcap file when shutting down, and can now create XML "plist" printcap files as well.</LI>
01ce6322	136
58dc1933	137	<LI><EM>RSS subscriptions;</EM> the scheduler now starts the notifier for RSS subscriptions after creation so the feed is available immediately.</LI>
01ce6322	138
58dc1933	139	<LI><EM>Sandbox support;</EM> the scheduler now runs child processes using restrictive policies on Mac OS X for improved security and job isolation.</LI>
01ce6322	140
58dc1933	141	<LI><EM>Test option;</EM> the scheduler now supports a test mode via the "-t" option.</LI>
01ce6322	142
58dc1933	143	</OL>
01ce6322	144
01ce6322	145
58dc1933	146	<H2 CLASS="title"><A NAME="DRIVERS">Printer Drivers</A></H2>
01ce6322	147
178cb736	148	<OL START="50">
01ce6322	149
58dc1933	150	<LI><EM>Device discovery;</EM> the cups-deviced helper now runs backends in parallel for faster discovery and streams the results of discovery as the backends provide them.</LI>
01ce6322	151
58dc1933	152	<LI><EM>Driver development kit;</EM> the CUPS DDK is now a standard part of CUPS.</LI>
01ce6322	153
58dc1933	154	<LI><EM>Driver information file support;</EM> the cups-driverd helper program now directly supports PPD compiler driver information files.</LI>
01ce6322	155
58dc1933	156	<LI><EM>Dynamic PPD support;</EM> drivers can now set PPD keywords dynamically using <code>PPD:</code> messages.</LI>
01ce6322	157
58dc1933	158	<LI><EM>Generic PostScript command filter;</EM> a new CUPS command file filter for PostScript printers provides auto-configuration, self-test page, and status and supply level reporting functions.</LI>
01ce6322	159
58dc1933	160	<LI><EM>New printer drivers;</EM> new generic PostScript and PCL drivers provide improved support for laser printers, the CUPS DDK drivers offer support for many HP DesignJet printers, and new label drivers offer support for Seiko and Tharo label printers.</LI>
01ce6322	161
58dc1933	162	<LI><EM>PJL support;</EM> the cupsPJLDisplay PPD attribute controls the PJL commands used to display the current user and job on the printer.</LI>
01ce6322	163
58dc1933	164	<LI><EM>PPD compiler improvements;</EM> the PPD compiler now supports Mac OS X .strings files, OID query strings, conditional directives, long file names, and a test mode. It also fixes many other bugs from the CUPS DDK 1.2.3 release.</LI>
01ce6322	165
58dc1933	166	<LI><EM>USB printer support;</EM> the usb backend now uses libusb when available to allow it to better work with third-party scanning and printing solutions.</LI>
01ce6322 MS	167
	168	</OL>
	169
	170
	171	<H2 CLASS="title"><A NAME="FILTERS">Print Filters</A></H2>
	172
178cb736	173	<OL START="59">
01ce6322	174
58dc1933	175	<LI><EM>Banner filter;</EM> the bundled banner ("job-sheets") pages are now generated using a new banner filter provides easier customization and better support for UTF-8 text.</LI>
01ce6322	176
58dc1933	177	<LI><EM>Image filters;</EM> the standard image filters now support image files larger than 2GB.</LI>
01ce6322 MS	178
	179	<LI><EM>PDF filter;</EM> the pdftops filter has been replaced with a wrapper program that runs the Xpdf, poppler, or Ghostscript PDF to PostScript utilities.</LI>
	180
01ce6322 MS	181	</OL>
	182
	183
	184	<H2 CLASS="title"><A NAME="CUPSAPI">CUPS API</A></H2>
	185
178cb736	186	<OL START="62">
01ce6322	187
58dc1933	188	<LI><EM>Backend API;</EM> a new cupsBackendReport function is provided to report a device from a backend and handles any needed quoting of the make-and-model, info, device-id, and location strings.</LI>
01ce6322 MS	189
	190	<LI><EM>Device discovery;</EM> the new <code>cupsGetDevices</code> function streams discovered devices to an application-provided callback function.</LI>
	191
58dc1933	192	<LI><EM>IPP API;</EM> the IPP read and write functions no longer use a large stack-based buffer when reading and writing IPP attributes.</LI>
01ce6322	193
58dc1933	194	<LI><EM>PPD support;</EM> several new functions are provided: cupsGetPPD3, cupsResolveConflicts, ppdInstallableConflict, ppdLocalizeAttr, ppdLocalizeMarkerName and ppdPageSizeLimits.</LI>
01ce6322	195
58dc1933	196	<LI><EM>Side-Channel API;</EM> new cupsSideChannelSNMPGet and cupsSideChannelSNMPWalk functions allow printer drivers to do SNMP queries via the standard network backends.</LI>
01ce6322	197
58dc1933	198	<LI><EM>Streaming API;</EM> a new streaming request API provides asynchronous job creation and request submission.</LI>
01ce6322 MS	199
01ce6322 MS	200	</OL>
480ef0fe	201
ef416fc2	202
	203	</BODY>
	204	</HTML>