c_strcasecmp and c_strncasecmp were taken from GNU coreutils 6.9,
which is copyrighted by the Free Software Foundation and licensed
under GNU GPL version 2 or later. It seems the programs in coreutils
do not normally read commands interactively. So, including coreutils
code in an interactive program such as ELinks could trigger GPLv2
section 2. c), which would require ELinks to display a copyright
notice and a warranty disclaimer each time it is started. Rewrite
those functions to remove the FSF-copyrighted code and make ELinks
not a work based on GNU coreutils.
Avoiding FSF code has the additional benefit that we won't have to ask
FSF for permission if we want to add a licence exception that allows
linking ELinks with OpenSSL. So it seems a good idea even if my
interpretation of GPLv2 2. c) is overly strict. I haven't checked
though whether there are other FSF-copyrighted portions in ELinks.
src/config/kbdbind.c (parse_keystroke): If the user types "Ctrl-i",
it should mean "Ctrl-I" rather than "Ctrl-İ", because the Ctrl-
combinations are only well known for ASCII characters. This does not
matter in practice though, because src/terminal/kbd.c converts 0x09
to (KBD_MOD_NONE, KBD_TAB) and not to (KBD_MOD_CTRL, 'I').
src/osdep/beos/beos.c (get_system_env): Changing the locale does not
affect the TERM environment variable, I think, so it should not affect
the interpretation either.
Add #include directives to fix these errors:
[CC] src/intl/gettext/l10nflist.o
cc1: warnings being treated as errors
.../src/intl/gettext/l10nflist.c: In function ‘_nl_normalize_codeset’:
.../src/intl/gettext/l10nflist.c:352: error: implicit declaration of function ‘c_tolower’
[CC] src/dom/css/scanner.o
cc1: warnings being treated as errors
In file included from .../src/dom/scanner.h:4,
from .../src/dom/css/scanner.h:4,
from .../src/dom/css/scanner.c:12:
.../src/dom/string.h: In function ‘dom_string_casecmp’:
.../src/dom/string.h:34: error: implicit declaration of function ‘c_strncasecmp’
Except if they have external handlers.
When ELinks receives an event from a terminal, move that terminal to
the beginning of the global "terminals" list, so that the terminals
are always sorted according to the time of the most recent use. Note,
this affects the numbering of bookmark folders in session snapshots.
Add get_default_terminal(), which returns the most recently used
terminal that is still open. Use that in various places that
previously used terminals.prev or terminals.next. Four functions
fetch the size of the terminal for User-Agent headers, and
get_default_terminal() is not really right, but neither was the
original code; add TODO comments in those functions.
When the user chooses "Background and Notify", associate the download
with the terminal where the dialog box is. So any later messages will
then appear in that terminal, if it is still open. However, don't
change the terminal if the download has an external handler.
When a download gets some data, don't immediately check the associated
terminal. Instead, wait for the download to end. Then, if the
terminal of the download has been closed, use get_default_terminal()
instead. If there is no default terminal either, just skip any
message boxes.
Merge functions:
redraw_from_window(win) => redraw_windows(REDRAW_IN_FRONT_OF_WINDOW, win)
redraw_below_window(win) => redraw_windows(REDRAW_BEHIND_WINDOW, win)
Add REDRAW_WINDOW_AND_FRONT as a third possibility.
Then use that in update_hierbox_browser(), which previously used
window.next for this purpose, and in dialog-scrolling code,
which previously did not redraw the dialog box itself.
Bug 932 is about ELinks letting control characters 0x80...0x9F through
to the terminal. It did not occur with ISO 8859-1, 8859-2, 8859-15,
or 8859-16, because the ELinks mappings for those charsets did not
include those bytes. However, the www.unicode.org versions imported
in the previous commit do include the problematic bytes.
To avoid a possible regression before the ELinks 0.12.0 release,
comment those control-character mappings out again. This workaround
should be reverted after bug 932 has been fixed properly.
Add copyright and licence notices, and a NEWS entry.
The data in the new versions is not entirely the same as what ELinks
used to have:
- Unicode/8859_1.cp: Adds control characters.
- Unicode/8859_2.cp: Adds control characters.
- Unicode/8859_4.cp: Adds some control characters that ELinks assumed
there already.
- Unicode/8859_7.cp: Adds three characters.
- Unicode/8859_15.cp: Adds control characters.
- Unicode/8859_16.cp: Adds control characters and swaps 0xA5 with 0xAB.
- Unicode/koi8_r.cp: Changes 0x95 and adds some control characters
that ELinks assumed there already.
- Unicode/macroman.cp: Changes 0xC6 and removes some control characters
that ELinks assumes there anyway.
Call stacks reported by valgrind:
==14702== at 0x80DD791: read_from_socket (socket.c:945)
==14702== by 0x8104D0C: read_more_http_data (http.c:1180)
==14702== by 0x81052FE: read_http_data (http.c:1388)
==14702== by 0x80DD69B: read_select (socket.c:910)
==14702== by 0x80D27AA: select_loop (select.c:307)
==14702== by 0x80D1ADE: main (main.c:358)
==14702== Address 0x4F4E598 is 56 bytes inside a block of size 81 free'd
==14702== at 0x402210F: free (vg_replace_malloc.c:233)
==14702== by 0x812BED8: debug_mem_free (memdebug.c:484)
==14702== by 0x80D7C82: done_connection (connection.c:479)
==14702== by 0x80D8A44: abort_connection (connection.c:769)
==14702== by 0x80D99CE: cancel_download (connection.c:1053)
==14702== by 0x8110EB6: abort_download (download.c:143)
==14702== by 0x81115BC: download_data_store (download.c:337)
==14702== by 0x8111AFB: download_data (download.c:446)
==14702== by 0x80D7B33: notify_connection_callbacks (connection.c:458)
==14702== by 0x80D781E: set_connection_state (connection.c:388)
==14702== by 0x80D7132: set_connection_socket_state (connection.c:234)
==14702== by 0x80DD78D: read_from_socket (socket.c:943)
read_from_socket() attempted to read socket->fd in order to set
handlers on it, but the socket had already been freed. Incidentally,
socket->fd was -1, which would have resulted in an assertion failure
if valgrind hadn't caught the bug first.
To fix this, add a list of weak references to sockets.
read_from_socket() registers a weak reference on entry and unregisters
it before exit. done_socket() breaks any weak references to the
specified socket. read_from_socket() then checks whether the weak
reference was broken, and doesn't access the socket any more if so.
This reverts src/{network,sched}/connection.c CVS revision 1.43,
which was made on 2003-07-03 and converted to Git commit
cae65f7941628109b51ffb2e2d05882fbbdc73ef in elinks-history.
It is pointless to check whether (c == d && c->id == d->id).
If c == d, then surely c->id == d->id, and I wouldn't be surprised
to see a compiler optimize that out.
Whereas, by taking the id as a parameter, connection_disappeared()
can check whether the pointer now points to a new struct connection
with a different id.
test/align.html: from www.czech-tv.cz
test/css/idnes_mail.html: apparently from idnes.cz
test/erreurs_en.htm: unclear origin
test/javascript_broken.html: presumably from www.hotjobs.com
test/poocs.net.html: presumably from poocs.net
I did not find in the source tree a licence to distribute any of these.
Samba 3.2.0 switched to version 3 of the GNU General Public License,
which is not compatible with GPLv2 used in ELinks. Perhaps we can
eventually relicense ELinks to "GPL version 2 or later", or resolve
this in some other way. Until then, warn distributors of binaries
about the conflict.
ELinks attempted to display a message box on file_download.term, but
it had already closed that terminal and freed the struct terminal. To
fix this, reset file_download.term pointers to NULL when the terminal
is about to be destroyed. Also, assert in download_data_store() that
file_download.term is either NULL or in the global "terminals" list.
Reported by أحمد المحمودي.
(cherry picked from commit 6e2476ea4d)
It is all in one line because <http://elinks.cz/authors.html>
is converted from AUTHORS and the conversion script is not
clever enough to know which newlines should be kept.
If the licence of ELinks is ever changed to "GNU GPL v3 or later",
I'll probably stop hacking it, but I don't want to legally forbid
such a change.
Make it clear that modified versions may also be distributed.
I am the sole copyright holder for these ELinks files
so I can replace the licence like this.
This version of the licence is used in bind-9.5.0-P2.tar.gz.
Wikipedia claims ISC made the change in July 2007 after a request
from the FSF.
The relicensing permission was in message
<200808271214.22088.kdudka@redhat.com> posted to elinks-dev on
2008-08-27. COPYING suggests such things should be added to AUTHORS.
The dependency table was originally in "fixed" format, so that
AsciiDoc took a fixed number of characters to the first column
and the rest to the second column. However, "OpenSSL or GNU TLS
or nss_compat_ossl" will not fit in that number of characters,
and backslash line continuation will not help because AsciiDoc
apparently parses that before it counts the characters.
I could widen the column in the AsciiDoc source but switching
to "dsv" format seems prettier.
test/optgroup.html was added on 2004-04-17 with no comment about licensing.
I contacted the author via <http://iccl.fi/feedback.cgi?id=mail>, asking
for a licence. The author noted that a developer of ELinks had originally
asked on the #debian.fi channel whether the file could be used, and he had
allowed it then. That permission grant had not been recorded in the source
tree though, and it is not clear whether modification had been allowed.
Anyway, the author now explicitly grants us the GNU free documentation
licence on this file, and is willing to consider other licences.
never_for_this_site(form) did return remember_form(form).
In ELinks 0.11.0, both functions returned int, so this was OK.
In commit 2b7788614f however, the
functions were changed to return void, as required by msg_box().
GCC still accepted the return statement but Sun Studio 11 did not.
On 2008-09-05, it was reported to elinks-dev that ELinks hits an
internal error (bad alloc_header) when given a specific HTML file.
On 2008-09-09, out-of-range values of document->comb_x and
document->comb_y were noted as the cause of memory corruption.
Update those variables when splitting, aligning, or justifying a line.
Add many assertions to detect the bug if it occurs again.
Previously, the character at (document.comb_x, document.comb_y) was
accessed via the POS macro, which adds part.box.x and part.box.y to
the coordinates. However, if document.comb and document.y are set
at the end of one part and read at the beginning of another, then
the struct screen_char used by the original part should be updated,
even though the new part has a different box. Change comb_{x,y} to
be relative to the document, rather than to the box of a single part.
The GNU Hurd has a bug that can make select() report an exception in a
pipe even though none has actually occurred. The typical result is
that ELinks closes the pipe through which it internally passes all
input events, such as keypresses. It then no longer reacts to what
the user is trying to do.
Work around the Hurd bug by making set_handlers() check whether the
file descriptor refers to a pipe, and if so, pretend the caller did
not provide any handler for exceptions. This is a minimal change that
avoids slowing down the select() loop itself and does not require
careful analysis of the callers to statically find out which file
descriptors might refer to pipes. The extra stat() calls may slow
ELinks down somewhat, but anyway it'll work better than it did without
the patch, and if the Hurd bug is ever fixed, we can remove the
workaround at that time.
Previously, spidermonkey_get_interpreter() and init_smjs() each called
JS_SetErrorReporter on the JSContexts they created. However,
JS_SetErrorReporter actually sets the error reporter of the JSRuntime
associated with the JSContext, and all of our JSContexts use the same
JSRuntime nowadays, so only the error_reporter() of
src/ecmascript/spidermonkey.c was left installed. Because this
error_reporter() asserts that JS_GetContextPrivate(ctx) returns a
non-NULL pointer, and init_smjs() does not set a private pointer for
smjs_ctx, any error in smjs_ctx could cause an assertion failure, at
least in principle.
Fix this by making spidermonkey_runtime_addref() install a shared
error_reporter() when it creates the JSRuntime and the first JSContext.
The shared error_reporter() then checks the JSContext and calls the
appropriate function.
The two error reporters are quite similar with each other. In the
future, we could move the common code into shared functions. I'm not
doing that yet though, because fixing the bug doesn't require it.
