The logic changes are as follows:
1、Loop sending the DISCOVER up to CONFIG_NETUTILS_DHCPC_RETRIES times
and exit if failure
2、Loop sending the REQUEST up to CONFIG_NETUTILS_DHCPC_RETRIES times
and exit if failure
Signed-off-by: songlinzhang <songlinzhang@xiaomi.com>
* webclient_perform
* Add a new flag to use non-blocking mode (WEBCLIENT_FLAG_NON_BLOCKING)
* Implement restarting
* Add a few associated API functions
* webclient_get_poll_info: get the descriptor info for poll/select
* webclient_abort: abort the operation (instead of restarting)
- check for minimum packet length (44 bytes, which includes the fields we
read next)
- pass the correct remaining buffer length to dhcpc_parseoptions()
- dhcpc_parseoptions(): ensure we never read past the end of the buffer
Gregory Nutt has submitted the SGA
Max Holtzberg has submitted the SGA
as a result we can migrate the licenses to Apache.
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
It matches the original iperf behavior.
Note: -t is a client-only option for the original iperf 2.xx.
Note: You can still choose the previous behavior by
explictly specifying -t.
Gregory Nutt is has submitted the SGA
Sebastien Lorquet has submitted the ICLA
as a result we can migrate the licenses to Apache.
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
Gregory Nutt is has submitted the SGA
Max Holtzberg has submitted the SGA
as a result we can migrate the licenses to Apache.
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
Gregory Nutt is has submitted the SGA
Mateusz Szafoni has submitted the ICLA
as a result we can migrate the licenses to Apache.
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
Gregory Nutt is has submitted the SGA
Sebastien Lorquet has submitted the ICLA
as a result we can migrate the licenses to Apache.
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
Gregory Nutt is the copyright holder for those files and he has submitted the
SGA as a result we can migrate the licenses to Apache.
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
Similarly to the fix in wget_parseheaders.
But simply always bail out as i guess it's very rare to see
that long status line.
Tested with an aritifically small CONFIG_WEBCLIENT_MAXHTTPLINE=20,
which is smaller than "HTTP/1.1 301 Moved Permanently".
* Detect a long header line which doesn't fit the buffer.
* If the header line in question doesn't seem important for us,
just ignore it.
* Otherwise, bail out with -E2BIG.
The overrun was found by LLVM UBSan on macOS.
The following is an example of a long header line,
which doesn't fit the default CONFIG_WEBCLIENT_MAXHTTPLINE=200.
```
pacetanuki% curl -v https://www.midokura.com
:
:
< HTTP/2 200
< server: nginx
< date: Fri, 14 May 2021 02:16:24 GMT
< content-type: text/html; charset=UTF-8
< content-length: 131313
< x-powered-by: PHP/7.4.18
< link: <https://www.midokura.com/wp-json/>; rel="https://api.w.org/", <https://www.midokura.com/wp-json/wp/v2/pages/7>; rel="alternate"; type="application/json", <https://www.midokura.com/>; rel=shortlink
< x-powered-by: PleskLin
<
```
For EINVAL, it doesn't make sense to keep parsing.
(For E2BIG, it might make some sense.)
Found by LLVM ASan.
```
=================================================================
==81622==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x6020000000f2 at pc 0x00010d2746ca bp 0x7ffee29a9980 sp 0x7ffee29a9978
READ of size 1 at 0x6020000000f2 thread T0
#0 0x10d2746c9 in netlib_parseurl netlib_parseurl.c:121
#1 0x10d26b293 in parseurl webclient.c:479
#2 0x10d265e48 in webclient_perform webclient.c:690
#3 0x10d277c5b in main main.c:210
#4 0x7fff7a06f3d4 in start+0x0 (libdyld.dylib:x86_64+0x163d4)
0x6020000000f2 is located 0 bytes to the right of 2-byte region [0x6020000000f0,0x6020000000f2)
allocated by thread T0 here:
#0 0x10d3996d3 in wrap_strdup+0x203 (libclang_rt.asan_osx_dynamic.dylib:x86_64+0x3e6d3)
#1 0x10d276abe in main main.c:147
#2 0x7fff7a06f3d4 in start+0x0 (libdyld.dylib:x86_64+0x163d4)
SUMMARY: AddressSanitizer: heap-buffer-overflow netlib_parseurl.c:121 in netlib_parseurl
Shadow bytes around the buggy address:
0x1c03ffffffc0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x1c03ffffffd0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x1c03ffffffe0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x1c03fffffff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x1c0400000000: fa fa fd fd fa fa fd fd fa fa 00 00 fa fa 00 00
=>0x1c0400000010: fa fa 00 fa fa fa 00 00 fa fa 00 06 fa fa[02]fa
0x1c0400000020: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x1c0400000030: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x1c0400000040: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x1c0400000050: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x1c0400000060: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
Left alloca redzone: ca
Right alloca redzone: cb
Shadow gap: cc
==81622==ABORTING
```
