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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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error page
For one, an attacker can try to overload us by just opening and immediately
closing tons of connections - reduce our work to the minimum for this case.
function old new delta
handle_incoming_and_exit 2172 2200 +28
.rodata 103225 103246 +21
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(add/remove: 0/0 grow/shrink: 2/0 up/down: 49/0) Total: 49 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
handle_incoming_and_exit 2161 2172 +11
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
parse_conf 1325 1332 +7
handle_incoming_and_exit 2173 2161 -12
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(add/remove: 0/0 grow/shrink: 1/1 up/down: 7/-12) Total: -5 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
handle_incoming_and_exit 2172 2173 +1
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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This makes proxy work for any type of requests.
function old new delta
handle_incoming_and_exit 2240 2172 -68
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
handle_incoming_and_exit 2217 2240 +23
static.request_POST - 5 +5
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(add/remove: 1/0 grow/shrink: 1/0 up/down: 28/0) Total: 28 bytes
Signed-off-by: Alexander Sack <asac@pantacor.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
fputs_stdout - 12 +12
zxc_vm_process 7237 7230 -7
yes_main 85 78 -7
write_block 380 373 -7
wrapf 305 298 -7
strings_main 437 430 -7
show_bridge 353 346 -7
rev_main 384 377 -7
put_prompt_custom 58 51 -7
put_cur_glyph_and_inc_cursor 168 161 -7
print_numbered_lines 152 145 -7
print_named_ascii 130 123 -7
print_name 135 128 -7
print_login_issue 386 379 -7
print_ascii 208 201 -7
powertop_main 1249 1242 -7
od_main 1789 1782 -7
logread_main 518 511 -7
head_main 804 797 -7
display_process_list 1319 1312 -7
cut_main 1002 995 -7
bb_dump_dump 1550 1543 -7
bb_ask_noecho 393 386 -7
baseNUM_main 702 695 -7
expand_main 755 745 -10
dumpleases_main 497 487 -10
write1 12 - -12
putcsi 37 23 -14
print_login_prompt 55 41 -14
paste_main 525 511 -14
cat_main 440 426 -14
print_it 245 230 -15
print_addrinfo 1188 1171 -17
print_rule 770 750 -20
print_linkinfo 842 822 -20
httpd_main 791 771 -20
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(add/remove: 1/1 grow/shrink: 0/34 up/down: 12/-341) Total: -329 bytes
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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FreeBSD is not exporting s6_addr32 by default, but has it.
Signed-off-by: Alex Samorukov <samm@os2.kiev.ua>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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If the Range: header is not present it the request,
the offset passed to sendfile is wrong,
and httpd falls back to the read-write loop.
function old new delta
send_file_and_exit 857 865 +8
handle_incoming_and_exit 2239 2230 -9
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(add/remove: 0/0 grow/shrink: 1/1 up/down: 8/-9) Total: -1 bytes
Signed-off-by: Maxim Storchak <m.storchak@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
decode_base64 173 178 +5
read_base64 222 220 -2
decode_base32 186 182 -4
handle_incoming_and_exit 2263 2239 -24
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(add/remove: 0/0 grow/shrink: 1/3 up/down: 5/-30) Total: -25 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
decode_base64 195 180 -15
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Use decode_base64() from uuencode.c when uudecode/base64 applets are included.
That function is bigger than httpd's decodeBase64(), so we use the old one when
those applets are disabled. Bloat-o-meter when one of those is enabled:
function old new delta
handle_incoming_and_exit 2371 2265 -106
Signed-off-by: Xabier Oneca <xoneca@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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When disabled:
function old new delta
if_ip_denied_send_HTTP_FORBIDDEN_and_exit 52 - -52
handle_incoming_and_exit 2201 2097 -104
scan_ip 170 - -170
parse_conf 1365 1065 -300
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(add/remove: 0/2 grow/shrink: 0/2 up/down: 0/-626) Total: -626 bytes
Signed-off-by: Sergey Ponomarev <stokito@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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If server responds with ETag then next time client can resend it via If-None-Match header.
Then httpd will check if file wasn't modified and if not return 304 Not Modified status code.
The ETag value is constructed from file's last modification date in unix epoch and it's size:
"hex(last_mod)-hex(file_size)" e.g. "5e132e20-417" (with quotes).
That means that it's not completely reliable as hash functions but fair enough.
The same form of ETag is used by Nginx so load balancing of static content is safe.
function old new delta
handle_incoming_and_exit 2135 2201 +66
http_response 88 96 +8
send_headers 676 683 +7
parse_conf 1362 1365 +3
http_response_type 22 24 +2
send_file_and_exit 847 841 -6
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(add/remove: 0/0 grow/shrink: 5/1 up/down: 86/-6) Total: 80 bytes
Signed-off-by: Sergey Ponomarev <stokito@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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The Last-Modified header is used for caching.
The client (browser) will send back the received date to server via If-Modified-Since request header.
But both headers MUST be an RFC 1123 formatted string.
And the formatting consumes resources on request parsing and response generation.
Instead we can use ETag header.
This simplifies logic and the only downside is that in JavaScript the document.lastModified will return null.
Signed-off-by: Sergey Ponomarev <stokito@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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RFC 2616 sec. 14.18 says that server MUST send Date header.
But in fact the header make sense only for Cache-Control and can be omitted.
In the same time the Date eats power, CPU and network resources which are critical for embedded systems.
Signed-off-by: Sergey Ponomarev <stokito@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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HTTP v1.1 was released in 1999 year and it's time to update BB HTTPD.
Browsers may behave badly with HTTP/1.0
E.g. Chrome does not send the If-None-Match header with ETag.
Signed-off-by: Sergey Ponomarev <stokito@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Commit d1b75e184 (httpd: permit non-default home directory with NOMMU
enabled) only works when used with the '-f' (foreground) option.
When '-f' isn't specified and NOMMU is enabled bb_daemonize_or_rexec()
is called to daemonize the server. Since the server process has been
re-execed the previous patch results in the xchdir() not being called.
Fix this by resetting the re_execed variable in this case.
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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When BusyBox is compiled with NOMMU enabled running httpd with
the '-h' option fails even if the specified directory exists:
$ ls -d www
www
$ busybox httpd -fvvvp 8080 -h www
...
... try to access http://localhost:8080/www
...
httpd: can't change directory to 'www': No such file or directory
The parent process executes xchdir("www"). When a connection is accepted
it's handled by re-executing httpd in inetd mode. The child process
inherits the current directory "www" and tries to change directory again
to "www", which fails.
Omit the call to xchdir() when httpd is re-executed.
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Back in 2007, commit 0c97c9d43707 ("'simple' error message functions by
Loic Grenie") introduced bb_simple_perror_msg() to allow for a lower
overhead call to bb_perror_msg() when only a string was being printed
with no parameters. This saves space for some CPU architectures because
it avoids the overhead of a call to a variadic function. However there
has never been a simple version of bb_error_msg(), and since 2007 many
new calls to bb_perror_msg() have been added that only take a single
parameter and so could have been using bb_simple_perror_message().
This changeset introduces 'simple' versions of bb_info_msg(),
bb_error_msg(), bb_error_msg_and_die(), bb_herror_msg() and
bb_herror_msg_and_die(), and replaces all calls that only take a
single parameter, or use something like ("%s", arg), with calls to the
corresponding 'simple' version.
Since it is likely that single parameter calls to the variadic functions
may be accidentally reintroduced in the future a new debugging config
option WARN_SIMPLE_MSG has been introduced. This uses some macro magic
which will cause any such calls to generate a warning, but this is
turned off by default to avoid use of the unpleasant macros in normal
circumstances.
This is a large changeset due to the number of calls that have been
replaced. The only files that contain changes other than simple
substitution of function calls are libbb.h, libbb/herror_msg.c,
libbb/verror_msg.c and libbb/xfuncs_printf.c. In miscutils/devfsd.c,
networking/udhcp/common.h and util-linux/mdev.c additonal macros have
been added for logging so that single parameter and multiple parameter
logging variants exist.
The amount of space saved varies considerably by architecture, and was
found to be as follows (for 'defconfig' using GCC 7.4):
Arm: -92 bytes
MIPS: -52 bytes
PPC: -1836 bytes
x86_64: -938 bytes
Note that for the MIPS architecture only an exception had to be made
disabling the 'simple' calls for 'udhcp' (in networking/udhcp/common.h)
because it made these files larger on MIPS.
Signed-off-by: James Byrne <james.byrne@origamienergy.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Firefox needs this to execute .js
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Vicente Jimenez Aguilar <googuy@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
handle_incoming_and_exit 2362 2369 +7
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
handle_incoming_and_exit 2379 2362 -17
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-17) Total: -17 bytes
text data bss dec hex filename
981787 485 7296 989568 f1980 busybox_old
981779 485 7296 989560 f1978 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Pass the Authorization header to CGI if not of type Basic. This will
make it possible for CGI to verify authorization headers of type
Bearer <token>.
function old new delta
handle_incoming_and_exit 2370 2379 +9
Signed-off-by: Alexander Vickberg <wickbergster@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Today for gzipped content httpd is using a header with name
Transfer-Length. However I can't find a header with that name in the
standards. Instead use Content-Length.
function old new delta
.rodata 157940 157936 -4
send_headers 980 939 -41
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-45) Total: -45 bytes
Signed-off-by: Alexander Vickberg <wickbergster@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
handle_incoming_and_exit 2398 2370 -28
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
handle_incoming_and_exit 2385 2398 +13
if_ip_denied_send_HTTP_FORBIDDEN_and_exit 51 54 +3
get_line 110 106 -4
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/1 up/down: 16/-4) Total: 12 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
handle_incoming_and_exit 2566 2385 -181
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Set up environment variables before running the CGI script.
The variables will be named HTTP_<filtered_name> where the <filtered_name>
is the header name capitalized and all characters not matching
[a-z] | [A-Z] | [0-9] replaced with '_'.
function old new delta
http_response 80 88 +8
http_response_type 20 22 +2
send_headers 718 715 -3
parse_conf 1481 1478 -3
get_line 128 110 -18
cgi_io_loop_and_exit 599 569 -30
send_cgi_and_exit 882 738 -144
handle_incoming_and_exit 2793 2592 -201
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/6 up/down: 10/-399) Total: -389 bytes
text data bss dec hex filename
982178 485 7296 989959 f1b07 busybox_old
981675 485 7296 989456 f1910 busybox_unstripped
Signed-off-by: Alexander Vickberg <wickbergster@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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The proxying is documented as follows:
P:/url:[http://]hostname[:port]/new/path
Howeverm urlcopy is not a true copy anymore when it is fdprint'ed
to proxy_fd, this is because percent_decode_in_place() is called
after the copy is created.
This breaks reverse proxying all URIs containing percent
encoded spaces, e.g. - because a decoded URI will be printed out
to proxy_fd instead of the original.
The fix keeps the logic in place to canonicalize the uri first,
before reverse proxying (one could argue that the uri
should be proxied completely unaltered, except for the prefix
rewrite).
function old new delta
handle_incoming_and_exit 2752 2792 +40
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
handle_incoming_and_exit 2763 2752 -11
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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While at it, fix sighup_handler to not clobber errno.
function old new delta
send_HTTP_FORBIDDEN_and_exit_if_denied_ip - 47 +47
sighup_handler 15 30 +15
handle_incoming_and_exit 2791 2763 -28
checkPermIP 48 - -48
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 1/1 up/down: 62/-76) Total: -14 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Instead, simply don't send this header.
On Mon, Apr 2, 2018 at 8:17 PM, xisd <xisd-dev@riseup.net> wrote:
> I had some trouble using busybox httpd to serve a static website and I
> thought the issue might be of interest.
>
> My problem is related to something that seem quite common for static
> site generator : the use of html files without the '.html' extension
> (it is called 'clean url'...)
>
> Most web server guess that these files are html and display them like
> any other .html files.
>
> From what I understood, the MIME type for files without extension in
> busybox htttp default settings is 'application/octet-stream', and
> because of that 'clean url' pages are not displayed.
>
> It is only trouble because I wanted to deploy my website on freshly
> installed linux without editing any configuration.
>
> The default MIME setting make sense to me as it is, I just thought that
> might be worth mentioning since the use of 'clean url' seem to be a
> common practice for static sites generators (the one I use is callled
> 'yellow' (https://github.com/datenstrom/yellow))
>
> Here is a link for the related issue on github :
> https://github.com/datenstrom/yellow/issues/317
function old new delta
send_headers 702 718 +16
send_headers_and_exit 23 20 -3
handle_incoming_and_exit 2794 2791 -3
send_file_and_exit 772 756 -16
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/3 up/down: 16/-22) Total: -6 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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This avoids pulling in gmtime's static buffer:
function old new delta
svlogd_main 1401 1412 +11
send_headers 668 678 +10
gmtime 21 - -21
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 2/0 up/down: 21/-21) Total: 0 bytes
text data bss dec hex filename
920221 555 5804 926580 e2374 busybox_old
920221 555 5740 926516 e2334 busybox_unstripped
^^^^
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
vgetopt32 1318 1392 +74
runsvdir_main 703 713 +10
bb_make_directory 423 425 +2
collect_cpu 546 545 -1
opt_chars 3 - -3
opt_complementary 4 - -4
tftpd_main 567 562 -5
ntp_init 476 471 -5
zcip_main 1266 1256 -10
xxd_main 428 418 -10
whois_main 140 130 -10
who_main 463 453 -10
which_main 212 202 -10
wget_main 2535 2525 -10
watchdog_main 291 281 -10
watch_main 222 212 -10
vlock_main 399 389 -10
uuencode_main 332 322 -10
uudecode_main 316 306 -10
unlink_main 45 35 -10
udhcpd_main 1482 1472 -10
udhcpc_main 2762 2752 -10
tune2fs_main 290 280 -10
tunctl_main 366 356 -10
truncate_main 218 208 -10
tr_main 518 508 -10
time_main 1134 1124 -10
tftp_main 286 276 -10
telnetd_main 1873 1863 -10
tcpudpsvd_main 1785 1775 -10
taskset_main 521 511 -10
tar_main 1009 999 -10
tail_main 1644 1634 -10
syslogd_main 1967 1957 -10
switch_root_main 368 358 -10
svlogd_main 1454 1444 -10
sv 1296 1286 -10
stat_main 104 94 -10
start_stop_daemon_main 1028 1018 -10
split_main 542 532 -10
sort_main 796 786 -10
slattach_main 624 614 -10
shuf_main 504 494 -10
setsid_main 96 86 -10
setserial_main 1132 1122 -10
setfont_main 388 378 -10
setconsole_main 78 68 -10
sendmail_main 1209 1199 -10
sed_main 677 667 -10
script_main 1077 1067 -10
run_parts_main 325 315 -10
rtcwake_main 454 444 -10
rm_main 175 165 -10
reformime_main 119 109 -10
readlink_main 123 113 -10
rdate_main 246 236 -10
pwdx_main 189 179 -10
pstree_main 317 307 -10
pscan_main 663 653 -10
popmaildir_main 818 808 -10
pmap_main 80 70 -10
nc_main 1042 1032 -10
mv_main 558 548 -10
mountpoint_main 477 467 -10
mount_main 1264 1254 -10
modprobe_main 768 758 -10
modinfo_main 333 323 -10
mktemp_main 200 190 -10
mkswap_main 324 314 -10
mkfs_vfat_main 1489 1479 -10
microcom_main 715 705 -10
md5_sha1_sum_main 521 511 -10
man_main 867 857 -10
makedevs_main 1052 1042 -10
ls_main 563 553 -10
losetup_main 432 422 -10
loadfont_main 89 79 -10
ln_main 524 514 -10
link_main 75 65 -10
ipcalc_main 544 534 -10
iostat_main 2397 2387 -10
install_main 768 758 -10
id_main 480 470 -10
i2cset_main 1239 1229 -10
i2cget_main 380 370 -10
i2cdump_main 1482 1472 -10
i2cdetect_main 682 672 -10
hwclock_main 406 396 -10
httpd_main 741 731 -10
grep_main 837 827 -10
getty_main 1559 1549 -10
fuser_main 297 287 -10
ftpgetput_main 345 335 -10
ftpd_main 2232 2222 -10
fstrim_main 251 241 -10
fsfreeze_main 77 67 -10
fsck_minix_main 2921 2911 -10
flock_main 314 304 -10
flashcp_main 740 730 -10
flash_eraseall_main 833 823 -10
fdformat_main 532 522 -10
expand_main 680 670 -10
eject_main 335 325 -10
dumpleases_main 630 620 -10
du_main 314 304 -10
dos2unix_main 441 431 -10
diff_main 1350 1340 -10
df_main 1064 1054 -10
date_main 1095 1085 -10
cut_main 961 951 -10
cryptpw_main 228 218 -10
crontab_main 575 565 -10
crond_main 1149 1139 -10
cp_main 370 360 -10
common_traceroute_main 3834 3824 -10
common_ping_main 1767 1757 -10
comm_main 239 229 -10
cmp_main 655 645 -10
chrt_main 379 369 -10
chpst_main 704 694 -10
chpasswd_main 308 298 -10
chown_main 171 161 -10
chmod_main 158 148 -10
cat_main 428 418 -10
bzip2_main 120 110 -10
blkdiscard_main 264 254 -10
base64_main 221 211 -10
arping_main 1665 1655 -10
ar_main 556 546 -10
adjtimex_main 406 396 -10
adduser_main 882 872 -10
addgroup_main 411 401 -10
acpid_main 1198 1188 -10
optstring 11 - -11
opt_string 18 - -18
OPT_STR 25 - -25
ubi_tools_main 1288 1258 -30
ls_options 31 - -31
------------------------------------------------------------------------------
(add/remove: 0/6 grow/shrink: 3/129 up/down: 86/-1383) Total: -1297 bytes
text data bss dec hex filename
915428 485 6876 922789 e14a5 busybox_old
914629 485 6872 921986 e1182 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Those two spaces after tab have no effect, and always a nuisance when editing.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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