Sipi Server crashes when executing Test Script

[tobiasschweizer]

When executing test_server/knora_convert_from_binaries.sh, Sipi server crashes with output Segmentation fault: 11

[tobiasschweizer]

This seems to happen for each POST route

[tobiasschweizer]

SIPI server crashes when receiving a POST request with the header "Content-Type: application/x-www-form-urlencoded"

[tobiasschweizer]

in commit 29e675c, in shttps/Connection.cpp, the following lines were removed:

if ((bodybuf = (char *) malloc((content_length + 1)*sizeof(char))) == NULL) {
 -                                throw Error(__file__, __LINE__, "malloc failed!", errno);
 -                            }
 -                            ins->read(bodybuf, content_length);
 -                            if (ins->fail() ||ins->eof()) {
 -                                free(bodybuf);
 -                                throw -1;
 -                            }
 -                            bodybuf[content_length] = '\0';

[tobiasschweizer]

as a consequence, bodybuf may be NULL:

if (content_length > 0) {
                    vector<string> content_type_opts = process_header_value(header_in["content-type"]);
                    if (content_type_opts[0] == "application/x-www-form-urlencoded") {
                        char *bodybuf = NULL;
                        if (_chunked_transfer_in) {
                            ChunkReader ckrd(ins);
                            (void) ckrd.readAll(&bodybuf);
                        }
                        else {
                        }
                        string body = bodybuf;
                        post_params = parse_query_string(body, true);
                        request_params.insert(post_params.begin(), post_params.end());

                        free(bodybuf);
                    }

[tobiasschweizer]

Starting program: /Users/tobi/gitreps/Sipi-github/local/bin/sipi -config config/sipi.config.lua
[New Thread 0x1313 of process 3268]
[New Thread 0x1403 of process 3268]

Thread 2 received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x1313 of process 3268]
0x00007fff8ff4d152 in strlen () from /usr/lib/system/libsystem_c.dylib

(gdb) backtrace
#0  0x00007fff8ff4d152 in strlen () from /usr/lib/system/libsystem_c.dylib
#1  0x000000010003b005 in std::__1::char_traits<char>::length(char const*) ()
#2  0x00000001004a0dec in std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::basic_string (this=0x7000000fc6c0, __s=0x0)
    at /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/string:2005
#3  std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::basic_string (
    this=0x7000000fc6c0, __s=0x0)
    at /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/string:2003
#4  shttps::Connection::Connection (this=0x700000100608, server_p=0x7fff5fbff310, ins_p=0x700000100a18, 
    os_p=0x700000100968, tmpdir_p=..., buf_size=0, buf_inc=8192)
    at /Users/tobi/gitreps/Sipi-github/lib/shttps/Connection.cpp:480
#5  0x00000001004ac0ad in shttps::Connection::Connection (this=0x700000100608, server_p=0x7fff5fbff310, 
    ins_p=0x700000100a18, os_p=0x700000100968, tmpdir_p=..., buf_size=0, buf_inc=8192)
    at /Users/tobi/gitreps/Sipi-github/lib/shttps/Connection.cpp:361
#6  0x00000001004ed6d4 in shttps::Server::processRequest (this=0x7fff5fbff310, sock=6, peer_ip=..., peer_port=49883)
    at /Users/tobi/gitreps/Sipi-github/lib/shttps/Server.cpp:597
#7  0x00000001004ed0a9 in shttps::process_request (arg=0x100e000a0)
    at /Users/tobi/gitreps/Sipi-github/lib/shttps/Server.cpp:427
#8  0x00007fff9609099d in ?? () from /usr/lib/system/libsystem_pthread.dylib
#9  0x0000000000001103 in ?? ()
#10 0x0000700000104000 in ?? ()
#11 0x0000700000103f50 in ?? ()
#12 0x00007fff9609091a in ?? () from /usr/lib/system/libsystem_pthread.dylib
#13 0x0000000000000000 in ?? ()

[lrosenth]

Hallo Tobias,
ja, da ist was schief gelaufen. Habe den Code mit malloc wieder rein getan. Bin am testen..

Liebe Grüsse,
Lukas

Prof. Dr. Lukas Rosenthaler
Head of "Digital Humanities Lab",
University of Basel
Bernoullistrasse 32
CH-4056 Basel, Switzerland

Tel: + 41 61 267 0490
Fax: +41 61 267 3855
http://www.dhlab.unibas.ch

On 20 Jun 2016, at 18:52, Tobias Schweizer notifications@github.com wrote:

as a consequence, bodybuf may be NULL:

if (content_length > 0) {
vector content_type_opts = process_header_value(header_in["content-type"]);
if (content_type_opts[0] == "application/x-www-form-urlencoded") {
char *bodybuf = NULL;
if (_chunked_transfer_in) {
ChunkReader ckrd(ins);
(void) ckrd.readAll(&bodybuf);
}
else {
}
string body = bodybuf;
post_params = parse_query_string(body, true);
request_params.insert(post_params.begin(), post_params.end());

                    free(bodybuf);
                }

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[tobiasschweizer]

Habe mich zunächst nur gewundert, warum da keine POST params mehr sind im Lua script :-)

[tobiasschweizer]

ok, openssl branch you have committed your fix to works for me now.

Now this should be fixed in develop to

[lrosenth]

I’ll do it :-)

Prof. Dr. Lukas Rosenthaler
Head of "Digital Humanities Lab",
University of Basel
Bernoullistrasse 32
CH-4056 Basel, Switzerland

Tel: + 41 61 267 0490
Fax: +41 61 267 3855
http://www.dhlab.unibas.ch

On 21 Jun 2016, at 00:28, Tobias Schweizer notifications@github.com wrote:

ok, openssl branch you have committed your fix to works for me now.

Now this should be fixed in develop to

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[tobiasschweizer]

great :-)

[BiancoA]

solved?

[lrosenth]

Solved