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Markus Armbruster e2ec3f9768 qjson: to_json() case QTYPE_QSTRING is buggy, rewrite 
Known bugs in to_json():

* A start byte for a three-byte sequence followed by less than two
  continuation bytes is split into one-byte sequences.

* Start bytes for sequences longer than three bytes get misinterpreted
  as start bytes for three-byte sequences.  Continuation bytes beyond
  byte three become one-byte sequences.

  This means all characters outside the BMP are decoded incorrectly.

* One-byte sequences with the MSB are put into the JSON string
  verbatim when char is unsigned, producing invalid UTF-8.  When char
  is signed, they're replaced by "\\uFFFF" instead.

  This includes \xFE, \xFF, and stray continuation bytes.

* Overlong sequences are happily accepted, unless screwed up by the
  bugs above.

* Likewise, sequences encoding surrogate code points or noncharacters.

* Unlike other control characters, ASCII DEL is not escaped.  Except
  in overlong encodings.

My rewrite fixes them as follows:

* Malformed UTF-8 sequences are replaced.

  Except the overlong encoding \xC0\x80 of U+0000 is still accepted.
  Permits embedding NUL characters in C strings.  This trick is known
  as "Modified UTF-8".

* Sequences encoding code points beyond Unicode range are replaced.

* Sequences encoding code points beyond the BMP produce a surrogate
  pair.

* Sequences encoding surrogate code points are replaced.

* Sequences encoding noncharacters are replaced.

* ASCII DEL is now always escaped.

The replacement character is U+FFFD.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2013-04-13 19:40:25 +00:00
audio audio: Replace non-portable asprintf in debug code by g_strdup_printf 2013-01-16 12:03:26 -06:00
backends qemu-char: Call fe_claim / fe_release when not using qdev chr properties 2013-04-04 19:21:25 -05:00
block aes: move aes.h from include/block to include/qemu 2013-04-13 13:51:57 +02:00
bsd-user qemu-log: default to stderr for logging output 2013-02-26 13:31:47 -06:00
default-configs hw: move ARM CPU cores to hw/cpu/, configure with default-configs/ 2013-04-08 18:13:16 +02:00
disas target-i386: add AES-NI instructions 2013-04-13 13:51:57 +02:00
docs Typo, spelling and grammatical fixes 2013-04-12 14:33:20 +02:00
fpu softfloat: Handle float_muladd_negate_c when product is zero 2013-01-26 13:22:09 +00:00
fsdev virtfs-proxy-helper: Fix unchecked strdup() by conv. to g_strdup() 2013-01-30 11:14:46 +01:00
gdb-xml gdb-xml: fix hacks in powerpc register numbering 2009-07-12 23:42:05 +02:00
hw sh7750: Change cpu field type to SuperHCPU 2013-04-13 13:51:45 +02:00
include unicode: New mod_utf8_codepoint() 2013-04-13 19:39:59 +00:00
ldscripts build: create ldscripts/ 2012-12-19 08:29:06 +01:00
libcacard libcacard: Fix unchecked strdup() by converting to g_strdup() 2013-01-30 11:14:46 +01:00
linux-headers linux-headers: Update to v3.9-rc2 2013-04-01 11:50:04 -06:00
linux-user linux-user: pass correct host flags to eventfd2 call 2013-04-12 14:33:20 +02:00
net hw: move headers to include/ 2013-04-08 18:13:10 +02:00
pc-bios hw: move headers to include/ 2013-04-08 18:13:10 +02:00
pixman@97336fad32 qapi: move include files to include/qobject/ 2012-12-19 08:31:31 +01:00
po po: Update German translation 2013-04-04 00:28:37 +02:00
qapi qapi: Fix unchecked strdup() by converting to g_strdup() 2013-01-30 11:14:46 +01:00
qga qemu-ga: ga_get_fd_handle(): abort if fd_counter overflows 2013-04-02 09:06:11 -05:00
QMP virtio,pci,qom 2013-03-26 16:16:43 -05:00
qobject qjson: to_json() case QTYPE_QSTRING is buggy, rewrite 2013-04-13 19:40:25 +00:00
qom virtio,pci,qom 2013-03-26 16:16:43 -05:00
roms virtio,pci,qom 2013-03-26 16:16:43 -05:00
scripts trace: [stderr] Port to generic event information and new control interface 2013-03-28 14:19:57 +01:00
slirp oslib-posix: rename socket_set_nonblock() to qemu_set_nonblock() 2013-04-02 11:47:37 -04:00
stubs stubs: Add a vmstate_dummy struct for CONFIG_USER_ONLY 2013-03-12 10:35:54 +01:00
sysconfigs/target Eliminate cpus-x86_64.conf file 2012-09-21 15:12:58 +02:00
target-alpha cpu: Replace do_interrupt() by CPUClass::do_interrupt method 2013-03-12 10:35:55 +01:00
target-arm hw: move headers to include/ 2013-04-08 18:13:10 +02:00
target-cris cpu: Replace do_interrupt() by CPUClass::do_interrupt method 2013-03-12 10:35:55 +01:00
target-i386 target-i386: add AES-NI instructions 2013-04-13 13:51:57 +02:00
target-lm32 hw: move headers to include/ 2013-04-08 18:13:10 +02:00
target-m68k cpu: Replace do_interrupt() by CPUClass::do_interrupt method 2013-03-12 10:35:55 +01:00
target-microblaze Typo, spelling and grammatical fixes 2013-04-12 14:33:20 +02:00
target-mips target-mips: fix rndrashift_short_acc and code for EXTR_ instructions 2013-03-17 01:06:34 +01:00
target-moxie target-moxie: Fix VMState registration 2013-04-12 14:30:39 +02:00
target-openrisc cpu: Replace do_interrupt() by CPUClass::do_interrupt method 2013-03-12 10:35:55 +01:00
target-ppc hw: move headers to include/ 2013-04-08 18:13:10 +02:00
target-s390x Typo, spelling and grammatical fixes 2013-04-12 14:33:20 +02:00
target-sh4 hw: move headers to include/ 2013-04-08 18:13:10 +02:00
target-sparc cpu: Replace do_interrupt() by CPUClass::do_interrupt method 2013-03-12 10:35:55 +01:00
target-unicore32 cpu: Replace do_interrupt() by CPUClass::do_interrupt method 2013-03-12 10:35:55 +01:00
target-xtensa cpu: Replace do_interrupt() by CPUClass::do_interrupt method 2013-03-12 10:35:55 +01:00
tcg Merge branch 'tci' of git://qemu.weilnetz.de/qemu 2013-04-13 13:50:06 +02:00
tests qjson: to_json() case QTYPE_QSTRING is buggy, rewrite 2013-04-13 19:40:25 +00:00
tpm hw: move headers to include/ 2013-04-08 18:13:10 +02:00
trace trace: rebuild generated-events.o when configuration changes 2013-03-28 14:19:57 +01:00
ui Merge remote-tracking branch 'luiz/queue/qmp' into staging 2013-04-02 14:07:35 -05:00
util unicode: New mod_utf8_codepoint() 2013-04-13 19:39:59 +00:00
.exrc qemu: add .exrc 2012-09-07 09:02:44 +03:00
.gitignore .gitignore: rename trace/generated-tracers.dtrace 2013-03-28 14:19:57 +01:00
.gitmodules pixman: add submodule 2012-11-01 13:10:06 +01:00
.mailmap Add a .mailmap to map pre-git-conversion authors to friendly names 2011-12-12 17:06:21 -06:00
aio-posix.c aio: support G_IO_HUP and G_IO_ERR 2013-02-21 16:17:31 -06:00
aio-win32.c aio: Fix return value of aio_poll() 2013-01-17 10:51:42 +01:00
arch_init.c hw: move headers to include/ 2013-04-08 18:13:10 +02:00
async.c aio: add a ThreadPool instance to AioContext 2013-03-15 16:07:50 +01:00
balloon.c softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
block-migration.c migration: run setup callbacks out of big lock 2013-03-11 13:32:01 +01:00
block.c block: clean up I/O throttling wait_time code 2013-04-05 18:58:05 +02:00
blockdev-nbd.c hw: move headers to include/ 2013-04-08 18:13:10 +02:00
blockdev.c hw: move headers to include/ 2013-04-08 18:13:10 +02:00
blockjob.c misc: move include files to include/qemu/ 2012-12-19 08:32:39 +01:00
bt-host.c MinGW: Replace setsockopt by qemu_setsocketopt 2013-03-22 13:14:48 +01:00
bt-vhci.c softmmu: move remaining include files to include/ subdirectories 2012-12-19 08:32:46 +01:00
Changelog fix some common typos 2012-05-14 07:27:24 +02:00
cmd.c misc: move include files to include/qemu/ 2012-12-19 08:32:39 +01:00
cmd.h Delete useless 'extern' qualifiers for functions 2011-01-23 16:21:20 +00:00
CODING_STYLE Replace Qemu by QEMU in internal documentation 2012-04-07 13:58:25 +00:00
configure cpu-exec: Allow "-d exec" in non-debug builds (drop CONFIG_DEBUG_EXEC) 2013-04-12 14:33:21 +02:00
COPYING
COPYING.LIB
coroutine-gthread.c block: move include files to include/block/ 2012-12-19 08:31:31 +01:00
coroutine-sigaltstack.c Merge remote-tracking branch 'kwolf/for-anthony' into staging 2013-02-26 07:44:39 -06:00
coroutine-ucontext.c Merge remote-tracking branch 'kwolf/for-anthony' into staging 2013-02-26 07:44:39 -06:00
coroutine-win32.c block: move include files to include/block/ 2012-12-19 08:31:31 +01:00
cpu-exec.c Merge branch 'mingw' of git://qemu.weilnetz.de/qemu 2013-04-13 14:31:54 +02:00
cpus.c Check effective suspension of TCG thread 2013-04-12 18:27:16 +02:00
cputlb.c cpu: Move current_tb field to CPUState 2013-02-16 14:51:00 +01:00
device_tree.c softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
device-hotplug.c hw: move device-hotplug.o to toplevel, compile it once 2013-03-01 13:57:13 +01:00
disas.c Add moxie disassembler 2013-03-23 14:25:41 +00:00
dma-helpers.c softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
dump-stub.c softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
dump.c cpu: Move host_tid field to CPUState 2013-02-16 14:50:59 +01:00
exec.c hw: move headers to include/ 2013-04-08 18:13:10 +02:00
gdbstub.c hw: move headers to include/ 2013-04-08 18:13:10 +02:00
HACKING HACKING: List areas where we may rely on impdef C behaviour 2012-12-08 14:27:40 +00:00
hmp-commands.hx New QMP command query-cpu-max and HMP command cpu_max 2013-03-25 16:21:33 -04:00
hmp.c Merge remote-tracking branch 'quintela/migration.next' into staging 2013-03-26 13:38:00 -05:00
hmp.h New QMP command query-cpu-max and HMP command cpu_max 2013-03-25 16:21:33 -04:00
iohandler.c iohandler: switch to GPollFD 2013-02-21 16:17:31 -06:00
ioport.c exec: move include files to include/exec/ 2012-12-19 08:31:31 +01:00
kvm-all.c cpu: Pass CPUState to cpu_interrupt() 2013-03-12 10:35:55 +01:00
kvm-stub.c kvm: Pass CPUState to kvm_on_sigbus_vcpu() 2013-01-28 16:57:56 +01:00
LICENSE LICENSE: There is no libqemu.a anymore 2011-12-09 11:25:22 +00:00
main-loop.c main-loop: drop the BQL if the I/O appears to be spinning 2013-04-05 12:53:33 -05:00
MAINTAINERS MAINTAINERS: update for source code movement 2013-04-08 18:13:16 +02:00
Makefile build: enable using $(CONFIG_FOO) on the rhs of config files 2013-04-08 18:13:10 +02:00
Makefile.objs configure: Don't fall back to gthread coroutine backend 2013-04-08 10:38:44 -05:00
Makefile.target build: always link device_tree.o into emulators if libfdt available 2013-03-01 15:01:19 +01:00
memory_mapping-stub.c softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
memory_mapping.c exec: change RAM list to a TAILQ 2012-12-20 23:08:47 +01:00
memory.c memory: fix a bug of detection of memory region collision 2013-03-22 13:21:28 +01:00
migration-exec.c migration: eliminate s->migration_file 2013-03-11 13:32:03 +01:00
migration-fd.c migration: eliminate s->migration_file 2013-03-11 13:32:03 +01:00
migration-tcp.c migration: eliminate s->migration_file 2013-03-11 13:32:03 +01:00
migration-unix.c migration: eliminate s->migration_file 2013-03-11 13:32:03 +01:00
migration.c oslib-posix: rename socket_set_nonblock() to qemu_set_nonblock() 2013-04-02 11:47:37 -04:00
monitor.c hw: move headers to include/ 2013-04-08 18:13:10 +02:00
nbd.c oslib-posix: rename socket_set_nonblock() to qemu_set_nonblock() 2013-04-02 11:47:37 -04:00
os-posix.c softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
os-win32.c qemu-timer: move timeBeginPeriod/timeEndPeriod to os-win32 2013-04-12 18:27:16 +02:00
page_cache.c page_cache: dup memory on insert 2013-03-11 13:32:03 +01:00
qapi-schema-test.json qapi: add struct-errors test case to test-qmp-output-visitor 2012-03-27 09:11:00 -03:00
qapi-schema.json qapi schema: add AcpiTableOptions 2013-04-04 19:23:08 -05:00
qdev-monitor.c hw: move qdev-monitor.o to toplevel directory 2013-03-01 13:54:10 +01:00
qdict-test-data.txt Introduce QDict test data file 2009-09-04 09:37:34 -05:00
qemu-bridge-helper.c qemu-bridge-helper: force usage of a very high MAC address for the bridge 2013-03-28 12:58:52 -05:00
qemu-char.c qemu-char: really fix behavior on can_read = 0 2013-04-08 10:38:41 -05:00
qemu-coroutine-io.c misc: move include files to include/qemu/ 2012-12-19 08:32:39 +01:00
qemu-coroutine-lock.c coroutine: use AioContext for CoQueue BH 2013-03-15 16:07:51 +01:00
qemu-coroutine-sleep.c misc: move include files to include/qemu/ 2012-12-19 08:32:39 +01:00
qemu-coroutine.c coroutine: move pooling to common code 2013-02-22 21:21:10 +01:00
qemu-doc.texi sheepdog: add support for connecting to unix domain socket 2013-03-04 09:54:17 +01:00
qemu-img-cmds.hx qemu-img: Add compare subcommand 2013-02-22 21:21:10 +01:00
qemu-img.c block: Add options QDict to bdrv_open() prototype 2013-03-15 16:07:49 +01:00
qemu-img.texi qemu-img: Add compare subcommand 2013-02-22 21:21:10 +01:00
qemu-io.c block: Add options QDict to bdrv_file_open() prototypes 2013-03-22 17:51:31 +01:00
qemu-log.c qemu-log: default to stderr for logging output 2013-02-26 13:31:47 -06:00
qemu-nbd.c block: Add options QDict to bdrv_open() prototype 2013-03-15 16:07:49 +01:00
qemu-nbd.texi qemu-nbd: add --discard option 2013-02-22 21:29:43 +01:00
qemu-options-wrapper.h vl.c: In qemu -h output, only print options for the arch we are running as 2011-12-19 10:27:33 -06:00
qemu-options.h vl.c: Move option generation logic into a wrapper file 2011-12-19 10:27:33 -06:00
qemu-options.hx help: add docs for missing 'queues' option of tap 2013-04-03 15:09:07 -05:00
qemu-seccomp.c softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
qemu-tech.texi qemu-tech.texi: update implemented xtensa features list 2012-11-29 13:00:52 -06:00
qemu-timer.c qemu-timer: move timeBeginPeriod/timeEndPeriod to os-win32 2013-04-12 18:27:16 +02:00
qemu.sasl Add SASL authentication support ("Daniel P. Berrange") 2009-03-06 20:27:28 +00:00
qmp-commands.hx Merge remote-tracking branch 'quintela/migration.next' into staging 2013-03-26 13:38:00 -05:00
qmp.c softmmu: move remaining include files to include/ subdirectories 2012-12-19 08:32:46 +01:00
qtest.c qtest: use synchronous I/O for char device 2013-03-26 10:08:12 -05:00
readline.c readline: Fix unchecked strdup() by converting to g_strdup() 2013-01-30 11:14:46 +01:00
README Update README 2011-12-11 17:50:43 -06:00
rules.mak rules/mak: make clean should blow away timestamp files 2013-01-30 01:31:08 +02:00
savevm.c oslib-posix: rename socket_set_nonblock() to qemu_set_nonblock() 2013-04-02 11:47:37 -04:00
spice-qemu-char.c spice-qemu-char: Drop hackish vmc_register on spice_chr_write 2013-03-27 10:26:50 -05:00
tcg-runtime.c tcg: Implement multiword multiply helpers 2013-02-23 17:25:28 +00:00
tci.c tci: Make tcg temporaries local to tcg_qemu_tb_exec 2013-04-11 19:58:21 +02:00
thread-pool.c threadpool: drop global thread pool 2013-03-15 16:07:51 +01:00
thunk.c exec: move include files to include/exec/ 2012-12-19 08:31:31 +01:00
trace-events xhci: remove unimplemented printfs 2013-04-03 09:55:49 +02:00
translate-all.c tcg: Fix occasional TCG broken problem when ldst optimization enabled 2013-03-22 21:38:21 +01:00
translate-all.h cputlb: Pass CPUState to cpu_unlink_tb() 2013-02-16 14:51:00 +01:00
user-exec.c Replace all setjmp()/longjmp() with sigsetjmp()/siglongjmp() 2013-02-23 16:11:19 +00:00
VERSION Open up 1.5 development tree 2013-02-15 17:40:56 -06:00
version.rc mingw: add version information to the executables 2010-09-26 16:07:57 +00:00
vl.c hw: move headers to include/ 2013-04-08 18:13:10 +02:00
xbzrle.c Move XBZRLE encoding code to a separate file to allow testing 2013-02-01 08:32:20 +01:00
xen-all.c hw: move headers to include/ 2013-04-08 18:13:10 +02:00
xen-mapcache.c hw: move headers to include/ 2013-04-08 18:13:10 +02:00
xen-stub.c hw: move headers to include/ 2013-04-08 18:13:10 +02:00

README 

Read the documentation in qemu-doc.html or on http://wiki.qemu.org

- QEMU team