Commit graph

81 commits

Author SHA1 Message Date
Oliver Schmidt 957ac63a7c Improved dicarding of text in the HTML header.
Plain text in the HTML header (think of <title>text</title>) is collected as usual. The decision to discard it is triggered by the first withspace following. In the usual case of the <body> no preceeded by any whitespace this means that by the point the first whitespace is encountered we're not in "discard mode" anymore and therefore incorrectly render the text.

Explicitly calling do_word() just before leaving "discard mode" discards all text collected so far.
2016-10-11 11:25:31 +02:00
Simon Duquennoy b5141f165c www.c: Explicitly declare itoa as it is non-standard and not necessarily in stdlib.h 2015-11-10 14:38:22 +01:00
Simon Duquennoy fbd78a7e3b Merge pull request #1293 from simonduq/pr/fix-warnings
Fix a number of compiler warnings and enable -Werror in Travis
2015-11-10 08:49:11 +01:00
Oliver Schmidt 8e9da827c0 Several minor adjustments. 2015-11-03 22:09:24 +01:00
Oliver Schmidt 0303944d0c Log web browser page attributes free memory left.
After page loading has finished the number of free bytes left for page attributes is logged. It turns out that "usual" pages tend to get along with ~800 bytes while i.e. the Google search pages use all of the 2000 bytes of page attribute memory allocated by default (because of the long URLs with many parameters). So it seems that reducing this default isn't exactly the best way to reduce memory consumption...
2015-11-01 21:22:19 +01:00
Oliver Schmidt 1639b712bb Removed CC_FASTCALL.
CC_FASTCALL was introduced many years ago for the cc65 tool chain. It was never used for another tool chain. With a798b1d648 the cc65 tool chain doesn't need CC_FASTCALL anymore.
2015-11-01 18:10:17 +01:00
Oliver Schmidt 1066bb1a0b Client requested close takes precedence over server initiated close.
When the client has already called webclient_close() it doesn't expect to have webclient_datahandler(NULL, 0) called just because the connection was closed by the server "at the same time". Rather it expects to always have webclient_closed() called.

Calling webclient_datahandler(NULL, 0) instead of webclient_closed() means that the web browser shows "Done" in the status line instead of "Stopped". So the user is mislead to think that he has already seen all of the page.

Note: webclient_close() is called by the client during newdata() so the already existing check for WEBCLIENT_STATE_CLOSE further above doesn't help.
2015-11-01 15:34:09 +01:00
Oliver Schmidt 185be73014 Just some minor optimizations. 2015-11-01 15:18:29 +01:00
Simon Duquennoy 343326abee www.c: added #ifdef WITH_PETSCII guards to avoid compiler warning on unused variable wptr 2015-10-20 10:11:48 +02:00
Adam Dunkels c262eafe97 Fix compiler warnings 2015-10-20 10:11:30 +02:00
Oliver Schmidt 757809196e Some finishing touch on the CBM retro targets. 2015-08-08 15:41:24 +02:00
Oliver Schmidt 47bf797864 Added support for form with multiple submit buttons.
Forms with multiple submit buttons are rather rare but nevertheless the most popular web page (www.google.com) contains one with the two submit buttons "Google Search" and "I'm Feeling Lucky". So we want to support that - incl. the usual feature to the interpret first button as default button used when the user presses the ENTER key.
2015-06-07 00:29:29 +02:00
Oliver Schmidt e8b4befd1e Further improved parsing of <SCRIPT> tag.
Script code may contain a '<' as part of a equation. We erroneously interpreted that as start of a tag. Now we check for the very next char to be a '/' as the only tag allowed is the </SCRIPT> tag.
2015-06-07 00:23:44 +02:00
Oliver Schmidt 1d934db654 Reduce overlap on "scroll".
When using the 'down' button on a certain number of lines curently displayed at the bottom of the screen is redisplayed at the top of the screen. Given our usually small screen size and often large pages requiring many 'down' operations the number 'four' seems too generous so lets reduce it to 'two'.
2015-06-05 17:27:08 +02:00
Oliver Schmidt c5103bf997 Removed some redundant redrawing. 2015-06-05 16:59:16 +02:00
Oliver Schmidt f6b315a17f Fixed history handling.
- The wraparound handling when using the history with the 'back' button is actually depending on history_last being unsigned (which is the default for cc65) so define it explicitly as unsigned to make it work on other targets too.
- As there's no 'forward' button it doesn't make sense to keep history entries after using them with the 'back' button. Clearing them on use on the other hand avoids an "infinite history".
2015-06-05 16:34:57 +02:00
Oliver Schmidt e6903e4e7e Recognize HTTPS.
Although we for sure don't support HTTPS we need to recognize it. Nowadays it has become pretty usual to redirect HTTP URLs to HTTPS URLs in order to force privacy (thanks, NSA !). So far our redirection handler didn't recognize an HTTPS URL as abslute URLs and therefore appended it to the curent URL. This led to an endless redirection loop. Now we recognize the HTTPS redirection and generate a minimal document on the fly to inform the user of (for us unrachable) the redirection target.

HTML links with HTTPS URLs are treated just like fragment-only links meaning that they get simply completely ignored.
2015-06-05 16:26:20 +02:00
Oliver Schmidt 2f2295c182 Correctly initialize 'wordlen'. 2015-06-05 16:26:17 +02:00
Oliver Schmidt e93f9da7af Adjusted coding style. 2015-06-04 22:39:16 +02:00
Oliver Schmidt 448fa88ad8 Fixed handling of empty URLs.
The code to trim spaces from the end of the URL behaved undefined if the URL was empty. That scenario is far from hypothetic as i.e. pressing the 'back' button with no (more) entry in the history yields an empty URL.
2015-06-04 22:00:52 +02:00
Oliver Schmidt 8b0a7a697f Filter excessive newlines.
The way our HTML parser triggers newlines is a guess at best. On the other hand our screen estate is severely limited. Instead of trying to (further) improve the way we translate tags to newlines it seems more reasonable to simply never render more than two successive empty lines.
2015-06-04 21:14:37 +02:00
Oliver Schmidt cdd289a7ff Ignore fragment-only links.
We don't handle URLs with fragments exactly ;-) well - meaning we send the fragment part to the server and we don't display the document starting at the anchor tag. Instead of adding the missing capabilities and thus adding lots of code I instead opted to simply ignore fragment-only links. This approach is based on the practical knowledge that fragments are primarily used for intra-document navigation - and are as such fragment-only links. And as we ignore them anyway when displaying the document it's more ergonomic to not have those links in the first place.
2015-05-25 18:18:44 +02:00
Oliver Schmidt 9b9b92be06 Improved parsing of <SCRIPT> tag.
Complex script code tends to contain other tags inside strings. As we generally don't parse strings we erroneously interpreted those tags. The easiest workaround is to not interpret tags at all until the </SCRIPT> tag is found.
2015-05-25 16:46:23 +02:00
Oliver Schmidt a8837e230c Removed support for <FRAME> tag.
Framesets aren't used nowadays anymore so it seems reasonable to remove support for them in order to save some space.
2015-05-25 16:19:30 +02:00
Oliver Schmidt 980d055f72 Allow for attributes in <li> tags.
parse_tag() is called both for attributes inside a tag and the end of the tag itself. For most tags parse_tag() doesn't distinguish both cases. This means that the "tag action" is additionally triggered for every tag attribute. When the tag "action" is setting some state this doesn't hurt. For many tags the "tag action" is to render a newline. Superfluous newlines are sort of acceptable to keep the code as small as possible. However the <li> "tag action" is to render a newline followed by an asterisk - and superfluous asterisks are ugly so we check for <li> if parse_tag() was called for the end of the tag itself.
2015-05-24 19:40:35 +02:00
Oliver Schmidt a9f88a05d6 Don't render consecutive blanks inside links. 2015-05-24 19:00:39 +02:00
Oliver Schmidt a56af59f40 Avoid randomly "eating" blanks.
At the time do_word() is called s.word[s.wordlen] is undefined. So it doesn't make sense to make decisions based on its value - and in fact I don't see why it was necessary/desirable in the first place.
2015-05-24 15:45:45 +02:00
Oliver Schmidt 40417a2bcd Skip HTTP header fields to long to parse.
Nowadays many HTTP server set cookies which may easily result in HTTP header fields longer than our 'httpheaderline' buffer. It doesn't hurt if we can't parse them but we need to be able to skip them and continue to parse the following header fields.
2015-05-02 00:11:59 +02:00
Oliver Schmidt 085b7d8898 Set WWW_CONF_MAX_URLLEN to maximum value by default.
WWW_CONF_MAX_URLLEN is used as length for the 'editurl' textentry widget. The CTK code for handling that widget uses a single byte so the length can't be > 255. Thus WWW_CONF_MAX_URLLEN can't be > 255 as well.
2015-04-29 18:21:35 +02:00
Oliver Schmidt a94e7e63e2 Avoid compiler warnings. 2014-02-01 00:46:57 +01:00
Adam Dunkels b244f30480 Moved the ctk files from core/lib into core/lib/ and core/lib/libconio 2014-01-26 23:20:46 +01:00
Oliver Schmidt 1f4613383f Added more flexibility to webbrowser -> wget forwarding.
- Up to now the CTK program handler was necessary to start wget and forward the URL. Now alternatively the webbrowser uses the underlying OS to exec wget.

- Up to now windowed CTK was necessary to display the acknowledge dialog. Now alternatively the webbrowser displays the acknowledge text and buttons right in the webpage area.

- For now the targets 'win32' and 'c64' make use of the new capabilities.
2014-01-24 16:09:30 +01:00
Adam Dunkels ae5a3f9f67 Bumped the version number from 2.6 to 3.x, which is to be used in the development branch 2013-12-12 17:33:18 +01:00
Adam Dunkels bb2dcaa057 A massive all-tree automated update of all double inclusion guard #defines that changes from using two underscores as a prefix, which are reserved, to not using two underscores as a prefix 2013-11-24 20:20:11 +01:00
Oliver Schmidt 49fb300aa0 Minor code style fix 2013-07-30 22:48:04 +02:00
Oliver Schmidt 3a486d3954 Merge pull request #159 from oliverschmidt/master
Added support for <input type='hidden'>.
2013-03-13 02:53:46 -07:00
Oliver Schmidt 66fa843389 Added support for <input type='hidden'>.
Hidden form fields are aded to the page attribute buffer like text form fields so there's no need for special treatment in formsubmit(). However they are not added as widgets to the window so there's no user interaction.
2013-03-13 10:50:11 +01:00
Robert Quattlebaum f145c17039 core/net/resolv: IPv6 and mDNS ("Bonjour") support. Major refactor.
This patch updates the DNS resolver to support IPv6 and introduces an
improved API for looking up DNS entries. This patch also adds optional
support for mDNS lookups and responses to the DNS resolver.

Here is a quick summary of the changes:

 * Added support for IPv6 lookups.
 * DNS queries now honor record expiration.
 * Added support for mDNS, compatible with "Bonjour".
 * Implemented a new lookup api, `resolv_lookup2()`, which provides
   more information about the state of the record(error, expired,
   looking-up, etc.).

About mDNS/Bonjour Support
--------------------------

This patch adds basic support for mDNS/Bonjour, which allows you to
refer to the name of a device instead of its IP address. This is
incredibly convenient for IPv6 addresses because they tend to be very
long and difficult to remember. It is especially important for
link-local IPv6 addresses, since not all programs support the '%'
notation for indicating a network interface (required on systems with
more than one network interface to disambiguate).

In other words, instead of typing in this:

 * `http://[fe80::58dc:d7ed:a644:628f%en1]/`

You can type this instead:

 * `http://contiki.local/`

Huge improvement, no?

The convenience extends beyond that: this mechanism can be used for
nodes to talk to each other based on their human-readable names instead
of their IPv6 addresses. So instead of a switch on
`aaaa::58dc:d7ed:a644:628f` triggering an actuator on
`aaaa::ed26:19c1:4bd2:f95b`, `light-switch.local` can trigger the
actuator on `living-room-lights.local`.

What you need to do to be able to look up `.local` names on your
workstation depends on a few factors:

 * Your machine needs to be able to send and receive multicast packets
   to and from the LoWPAN. You can do this easily with the Jackdaw
   firmware on an RZUSBStick. If you have a border router, you will need
   it to bridge the mDNS multicast packets across the border.

 * If you are using a Mac, you win. All Apple devices support mDNS
   lookups.

 * If you are using Windows, you can install Apple's Bonjour for Windows
   package. (This may be already installed on your machine if you have
   installed iTunes) After you install this you can easily do `.local`
   lookups.

 * If you are using a Unix machine, you can install Avahi.

The default hostname is set to `contiki.local.`. You can change the
hostname programmatically by calling `resolv_set_hostname()`. You can
change the default hostname by changing `CONTIKI_CONF_DEFAULT_HOSTNAME`.

You may disable mDNS support by setting `RESOLV_CONF_SUPPORTS_MDNS` to
`0`.

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

core/net/resolv: `resolv_lookup2()` -> `resolv_lookup()`

Note that this patch should fix several `resolv_lookup()` bugs
that already existed. There were many cases where `resolv_lookup()`
was being called and the IP address ignored, but later code
assumed that the IP address had been fetched... ANYWAY, those
should be fixed now.

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

examples/udp-ipv6: Updated client to use MDNS to lookup the server.

Also updated the Cooja regression test simulation.
2013-03-10 11:40:08 -07:00
Oliver Schmidt c7b8bac006 Reorganized web page attribute data handling.
- Up to now the web browser used several fixed size arrays to hold the various types attribute data of the web page. This turned out to be way to inflexible for any non-trivial web page. Therefore now all attribute data is stored in a single buffer one after the other as they arrive from the parser only occupying the memory actually needed. This allows for pages with many links with rather short URLs as well as pages with few link with long URLs as well as pages with several simple forms as well as pages with one form with many form inputs.

- Using the actual web page buffer to hold the text buffers of text entry fields was in general a cool idea but in reality it  is often necessary to enter text longer than the size of the text entry field. Therefore the text buffer is now stored in the new unified attribute data buffer.

- Splitting up the process of canonicalizing a link URL and actually navigating to the resulting URL allowed to get rid of the 'tmpurl' buffer used during form submit. Now the form action is canonicalized like a usual link, then the form input name/value pairs are written right into the 'url' buffer and afterwards the navigation is triggered.

- Support for the 'render states' was completely removed. The only actually supported render state was centered output. The new unified attribute buffer would have complicated enumerating all widgets added to the page in order to adjust their position. Therefore I decided to drop the whole feature as the <center> tag is barely used anymore and newer center attributes are to hard to parse.
2013-03-06 16:29:36 +01:00
Oliver Schmidt 65a4472a0d Limit content of web browser version of http-strings to web browser.
In general it seems a bad idea to have two http-strings.c files as this precludes to have them both in the Contiki library. However as it stands it seems most reasonable to have one http-strings.c file be a clean superset of all usecases in order to allow them to run together in a single binary. As webserver/http-strings.c already contained strings not present in webbrowser/http-strings.c it seems reasonable to consider webserver/http-strings.c as the superset described. From that perspective it is appropriate to remove all strings from webbrowser/http-strings.c which are not used by the web browser in order to save memory otherwise wasted.
2013-03-06 15:12:02 +01:00
Oliver Schmidt d71ce70c54 Made sure that HTML form values get initialized properly. 2013-02-19 21:40:21 +01:00
Oliver Schmidt d5d646528e Added support for self closing tags.
XHTML requires self closing tags to be used for empty tags, so we need to recognize them.
2013-02-19 00:49:01 +01:00
Oliver Schmidt 374c89be01 Added newline on </div>.
The tag <div> (in contrast to the tag <span>) is normally used to denote content placed on a line by its own. So it makes sense to trigger a newline when </div> is processed.
2013-02-19 00:43:16 +01:00
Oliver Schmidt 4938877dd9 Lifted restrictions on accepted MIME type.
The "normal" web is moving forward quickly reducing the interoperability of the Contiki web browser to nearly zero. The Mobile Web fits the capabilities of the Contiki web browser much better. Modern smartphones don't need the Mobile Web anymore but there are large areas in world with rather low end mobile phones and limited mobile bandwidth where the Mobile Web will be necessary for quite some time.

From that perspective it is reasonable to increase the Contiki web browser's interoperability with the Mobie Web - namely WAP 2.0 aka XHTML MP. XHTML MP is delivered as MIME types 'application/vnd.wap.xhtml+xml' or 'application/xhtml+xml'. Therefore we (try to) parse the document if the MIME type contains the substring 'html' (which is true 'text/html' too).
2013-02-19 00:25:36 +01:00
Oliver Schmidt 15fb63ba9a Harmonized ststus texts and and added status on wrong MIME type. 2013-02-18 23:08:05 +01:00
Adam Dunkels 944537fccf Removed all old RCS tags in the Contiki source tree. Those RCS tags are not used any more, as we are now using git to manage the Contiki source tree 2012-10-26 15:54:49 +02:00
Adam Dunkels a3e56371a5 Bumped version number 2012-07-12 11:33:12 +02:00
Nicholas J Humfrey efab964451 Converted u8_t to uint8_t and u16_t to uint16_t in the apps directory. 2012-02-21 08:33:25 -05:00
adamdunkels 5585d72c86 A simple but substantial change: uIP used the htons()/HTONS() macro
functions for converting between host and network byte order. These
names are the de facto standard names for this functionality because
of the original BSD TCP/IP implementation. But they cause problems for
uIP/Contiki: some platforms define these names themselves (Mac OS,
most notably), causing compilation problems for Contiki on those
platforms.

This commit changes all htons to uip_htons instead. Same goes for
htonl, ntohs, and ntohl. All-caps versions as well.
2010-10-19 18:29:03 +00:00
oliverschmidt 05f938e7c1 Converting the last screen line from ASCII to PETSCII as it was done up to now almost never makes sense. Either the conent to be converted is not the last screen line or the last screen line was already converted (and is incorrectly converted back). Therefore now only a partial line not already converted before gets converted. 2010-07-21 21:03:06 +00:00