Also known as "status_request" or OCSP stapling, defined in RFC6066 section 8.
This requires GnuTLS 3.1.3 or higher to build, however it's recommended to use
at least GnuTLS 3.3.11 since previous versions had a bug that caused the OCSP
response verfication to fail even on valid responses.
This option can be used to enable/disable certificate status verification using
the "Certificate Status Request" TLS extension defined in RFC6066 section 8.
This also adds the CURLE_SSL_INVALIDCERTSTATUS error, to be used when the
certificate status verification fails, and the Curl_ssl_cert_status_request()
function, used to check whether the SSL backend supports the status_request
extension.
If the session is still used by active SSL/TLS connections, it
cannot be closed yet. Thus we mark the session as not being cached
any longer so that the reference counting mechanism in
Curl_schannel_shutdown is used to close and free the session.
Reported-by: Jean-Francois Durand
... and make sure we can connect the data connection to a host name that
is longer than 48 bytes.
Also simplifies the code somewhat by re-using the original host name
more, as it is likely still in the DNS cache.
Original-Patch-by: Vojtěch Král
Bug: http://curl.haxx.se/bug/view.cgi?id=1468
...to avoid a session ID getting cached without certificate checking and
then after a subsequent _enabling_ of the check libcurl could still
re-use the session done without cert checks.
Bug: http://curl.haxx.se/docs/adv_20150108A.html
Reported-by: Marc Hesse
As we get the length for the DN and attribute variables, and we know
the length for the line terminator, pass the length values rather than
zero as this will save Curl_client_write() from having to perform an
additional strlen() call.
curl_ntlm_core.c:146: warning: passing 'DES_cblock' (aka 'unsigned char
[8]') to parameter of type 'char *' converts
between pointers to integer types with different
sign
Rather than duplicate the code in setup_des_key() for OpenSSL and in
extend_key_56_to_64() for non-OpenSSL based crypto engines, as it is
the same, use extend_key_56_to_64() for all engines.
smb.c:780: warning: passing 'char *' to parameter of type 'unsigned
char *' converts between pointers to integer types with
different sign
smb.c:781: warning: passing 'char *' to parameter of type 'unsigned
char *' converts between pointers to integer types with
different sign
smb.c:804: warning: passing 'char *' to parameter of type 'unsigned
char *' converts between pointers to integer types with
different sign
Prefer void for unused parameters, rather than assigning an argument to
itself as a) unintelligent compilers won't optimize it out, b) it can't
be used for const parameters, c) it will cause compilation warnings for
clang with -Wself-assign and d) is inconsistent with other areas of the
curl source code.
Moved our Initialize Security Context return attribute definitions to
the SSPI module, as a) these can be used by other SSPI based providers
and b) the ISC required attributes are defined there.
curl_schannel.h:123: warning: right-hand operand of comma expression
has no effect
Some instances of the curlssl_close_all() function were declared with a
void return type whilst others as int. The schannel version returned
CURLE_NOT_BUILT_IN and others simply returned zero, but in all cases the
return code was ignored by the calling function Curl_ssl_close_all().
For the time being and to keep the internal API consistent, changed all
declarations to use a void return type.
To reduce code we might want to consider removing the unimplemented
versions and use a void #define like schannel does.
For consistency, as we seem to have a bit of a mixed bag, changed all
instances of ipv4 and ipv6 in comments and documentations to use the
correct case.
Otherwise Curl_ssl_init_certinfo() can fail and set the num_of_certs
member variable to the requested count, which could then be used
incorrectly as libcurl closes down.
The return type for this function was 0 on success and 1 on error. This
was then examined by the calling functions and, in most cases, used to
return CURLE_OUT_OF_MEMORY.
Instead use CURLcode for the return type and return the out of memory
error directly, propagating it up the call stack.
The return type of this function is a boolean value, and even uses a
bool internally, so use bool in the function declaration as well as
the variables that store the return value, to avoid any confusion.
curl_ntlm_core.c:301: warning: pointer targets in passing argument 2 of
'CryptImportKey' differ in signedness
curl_ntlm_core.c:310: warning: passing argument 6 of 'CryptEncrypt' from
incompatible pointer type
curl_ntlm_core.c:540: warning: passing argument 4 of 'CryptGetHashParam'
from incompatible pointer type
... as it never copies the trailing zero anyway and always just the four
bytes so let's not mislead anyone into thinking it is actually treated
as a string.
Coverity CID: 1260214
lib/setup-vms.h : VAX HP OpenSSL port is ancient, needs help.
More defines to set symbols to uppercase.
src/tool_main.c : Fix parameter to vms_special_exit() call.
packages/vms/ :
backup_gnv_curl_src.com : Fix the error message to have the correct package.
build_curl-config_script.com : Rewrite to be more accurate.
build_libcurl_pc.com : Use tool_version.h now.
build_vms.com : Fix to handle lib/vtls directory.
curl_gnv_build_steps.txt : Updated build procedure documentation.
generate_config_vms_h_curl.com :
* VAX does not support 64 bit ints, so no NTLM support for now.
* VAX HP SSL port is ancient, needs some help.
* Disable NGHTTP2 for now, not ported to VMS.
* Disable UNIX_SOCKETS, not available on VMS yet.
* HP GSSAPI port does not have gss_nt_service_name.
gnv_link_curl.com : Update for new curl structure.
pcsi_product_gnv_curl.com : Set up to optionally do a complete build.
Removed 'next' variable in Curl_convert_form(). Rather than setting it
from 'form->next' and using that to set 'form' after the conversion
just use 'form = form->next' instead.
There was a confusion between these: this commit tries to disambiguate them.
- Scope can be computed from the address itself.
- Scope id is scope dependent: it is currently defined as 1-based local
interface index for link-local scoped addresses, and as a site index(?) for
(obsolete) site-local addresses. Linux only supports it for link-local
addresses.
The URL parser properly parses a scope id as an interface index, but stores it
in a field named "scope": confusion. The field has been renamed into "scope_id".
Curl_if2ip() used the scope id as it was a scope. This caused failures
to bind to an interface.
Scope is now computed from the addresses and Curl_if2ip() matches them.
If redundantly specified in the URL, scope id is check for mismatch with
the interface index.
This commit should fix SF bug #1451.
- do not grow memory by doubling its size
- do not leak previously allocated memory if reallocation fails
- replace while-loop with a single check to make sure
that the requested amount of data fits into the buffer
Bug: http://curl.haxx.se/bug/view.cgi?id=1450
Reported-by: Warren Menzer
There is no need to set the 'state' and 'result' member variables to
SMB_REQUESTING (0) and CURLE_OK (0) after the allocation via calloc()
as calloc() initialises the contents to zero.
I don't think both of my fix ups from yesterday were needed to fix the
compilation warning, so remove the one that I think is unnecessary and
let the next Android autobuild prove/disprove it.
smtp.c:2357 warning: adding 'size_t' (aka 'unsigned long') to a string
does not append to the string
smtp.c:2375 warning: adding 'size_t' (aka 'unsigned long') to a string
does not append to the string
smtp.c:2386 warning: adding 'size_t' (aka 'unsigned long') to a string
does not append to the string
Used array index notation instead.
This fixes compilation issues with compilers that don't support 64-bit
integers through long long or __int64 which was introduced in commit
07b66cbfa4.
Previously USE_NTLM2SESSION would only be defined automatically when
USE_NTRESPONSES wasn't already defined. Separated the two definitions
so that the user can manually set USE_NTRESPONSES themselves but
USE_NTLM2SESSION is defined automatically if they don't define it.
As the OpenSSL and NSS Crypto engines are prefered by the core NTLM
routines, to the Windows Crypt API, don't define USE_WIN32_CRYPT
automatically when either OpenSSL or NSS are in use - doing so would
disable NTLM2Session responses in NTLM type-3 messages.
If the scratch buffer was allocated in a previous call to
Curl_smtp_escape_eob(), a new buffer not allocated in the subsequent
call and no action taken by that call, then an attempt would be made to
try and free the buffer which, by now, would be part of the data->state
structure.
This bug was introduced in commit 4bd860a001.
Fixed a problem with the CRLF. detection when multiple buffers were
used to upload an email to libcurl and the line ending character(s)
appeared at the end of each buffer. This meant any lines which started
with . would not be escaped into .. and could be interpreted as the end
of transmission string instead.
This only affected libcurl based applications that used a read function
and wasn't reproducible with the curl command-line tool.
Bug: http://curl.haxx.se/bug/view.cgi?id=1456
Assisted-by: Patrick Monnerat
parsedate.c:548: warning: 'parsed' may be used uninitialized in this
function
As curl_getdate() returns -1 when parsedate() fails we can initialise
parsed to -1.
This fixes the test 506 torture test. The internal cookie API really
ought to be improved to separate cookie parsing errors (which may be
ignored) with OOM errors (which should be fatal).
As Windows based autoconf builds don't yet define USE_WIN32_CRYPTO
either explicitly through --enable-win32-cypto or automatically on
_WIN32 based platforms, subsequent builds broke with the following
error message:
"Can't compile NTLM support without a crypto library."
Fixed an issue with the message size calculation where the raw bytes
from the buffer were interpreted as signed values rather than unsigned
values.
Reported-by: Gisle Vanem
Assisted-by: Bill Nagel
Don't use a hard coded size of 4 for the security layer and buffer size
in Curl_sasl_create_gssapi_security_message(), instead, use sizeof() as
we have done in the sasl_gssapi module.
Reduced the amount of free's required for the decoded challenge message
in Curl_sasl_create_gssapi_security_message() as a result of coding it
differently in the sasl_gssapi module.
Sending NTLM/Negotiate header again after successful authentication
breaks the connection with certain Proxies and request types (POST to MS
Forefront).
The ability to do HTTP requests over a UNIX domain socket has been
requested before, in Apr 2008 [0][1] and Sep 2010 [2]. While a
discussion happened, no patch seems to get through. I decided to give it
a go since I need to test a nginx HTTP server which listens on a UNIX
domain socket.
One patch [3] seems to make it possible to use the
CURLOPT_OPENSOCKETFUNCTION function to gain a UNIX domain socket.
Another person wrote a Go program which can do HTTP over a UNIX socket
for Docker[4] which uses a special URL scheme (though the name contains
cURL, it has no relation to the cURL library).
This patch considers support for UNIX domain sockets at the same level
as HTTP proxies / IPv6, it acts as an intermediate socket provider and
not as a separate protocol. Since this feature affects network
operations, a new feature flag was added ("unix-sockets") with a
corresponding CURL_VERSION_UNIX_SOCKETS macro.
A new CURLOPT_UNIX_SOCKET_PATH option is added and documented. This
option enables UNIX domain sockets support for all requests on the
handle (replacing IP sockets and skipping proxies).
A new configure option (--enable-unix-sockets) and CMake option
(ENABLE_UNIX_SOCKETS) can disable this optional feature. Note that I
deliberately did not mark this feature as advanced, this is a
feature/component that should easily be available.
[0]: http://curl.haxx.se/mail/lib-2008-04/0279.html
[1]: http://daniel.haxx.se/blog/2008/04/14/http-over-unix-domain-sockets/
[2]: http://sourceforge.net/p/curl/feature-requests/53/
[3]: http://curl.haxx.se/mail/lib-2008-04/0361.html
[4]: https://github.com/Soulou/curl-unix-socket
Signed-off-by: Peter Wu <peter@lekensteyn.nl>
On some platforms curl would crash if no credentials were used. As such
added detection of such a use case to prevent this from happening.
Reported-by: Gisle Vanem
This patch prepares for adding UNIX domain sockets support.
TCP_NODELAY and TCP_KEEPALIVE are specific to TCP/IP sockets, so do not
apply these to other socket types. bindlocal only works for IP sockets
(independent of TCP/UDP), so filter that out too for other types.
Signed-off-by: Peter Wu <peter@lekensteyn.nl>
smb.c:398: warning: comparison of integers of different signs:
'ssize_t' (aka 'long') and 'unsigned long'
smb.c:443: warning: comparison of integers of different signs:
'ssize_t' (aka 'long') and 'unsigned long'
smb.c:322: warning: conversion to 'short unsigned int' from 'unsigned
int' may alter its value
smb.c:323: warning: conversion to 'short unsigned int' from 'unsigned
int' may alter its value
smb.c:482: warning: conversion to 'short unsigned int' from 'int' may
alter its value
smb.c:521: warning: conversion to 'unsigned int' from 'curl_off_t' may
alter its value
smb.c:549: warning: conversion to 'unsigned int' from 'curl_off_t' may
alter its value
smb.c:550: warning: conversion to 'short unsigned int' from 'int' may
alter its value
smb.c:489: warning: declaration of 'close' shadows a global declaration
smb.c:511: warning: declaration of 'read' shadows a global declaration
smb.c:528: warning: declaration of 'write' shadows a global declaration
smb.c:212: warning: unused parameter 'done'
smb.c:380: warning: ISO C does not allow extra ';' outside of a function
smb.c:812: warning: unused parameter 'premature'
smb.c:822: warning: unused parameter 'dead'
smb.c:311: warning: conversion from 'unsigned __int64' to 'u_short',
possible loss of data
smb.c:425: warning: conversion from '__int64' to 'unsigned short',
possible loss of data
smb.c:452: warning: conversion from '__int64' to 'unsigned short',
possible loss of data
smb.c:162: error: comma at end of enumerator list
smb.c:469: warning: conversion from 'size_t' to 'unsigned short',
possible loss of data
smb.c:517: warning: conversion from 'curl_off_t' to 'unsigned int',
possible loss of data
smb.c:545: warning: conversion from 'curl_off_t' to 'unsigned int',
possible loss of data
If the scratch buffer already existed when the CRLF conversion was
performed then the buffer pointer would be checked twice for NULL. This
second check is only necessary if the call to malloc() was performed by
the first check.
Whilst I had moved the dot stuffing code from being performed before
CRLF conversion takes place to after it, in commit 4bd860a001, I had
moved it outside the 'when something read' block of code when meant
it could perform the dot stuffing twice on partial send if nread
happened to contain the right values. It also meant the function could
potentially read past the end of buffer. This was highlighted by the
following warning:
warning: `nread' might be used uninitialized in this function
After commit 48d19acb7c the HTTP code would call Curl_nss_force_init()
twice when decoding a NTLM type-2 message, once directly and the other
through the call to Curl_sasl_decode_ntlm_type2_message().
This commit disables pipelining for HTTP/2 or upgraded connections. For
HTTP/2, we do not support multiplexing. In general, requests cannot be
pipelined in an upgraded connection, since it is now different protocol.
When the connection code decides to close a socket it informs the multi
system via the Curl_multi_closed function. The multi system may, in
turn, invoke the CURLMOPT_SOCKETFUNCTION function with
CURL_POLL_REMOVE. This happens after the socket has already been
closed. Reorder the code so that CURL_POLL_REMOVE is called before the
socket is closed.
Debug output 'typo' fix.
Don't print an extra "0x" in
* Pipe broke: handle 0x0x2546d88, url = /
Add debug output.
Print the number of connections in the connection cache when
adding one, and not only when one is removed.
Fix typos in comments.
Updated the usage of some legacy APIs, that are preventing curl from
compiling for Windows Store and Windows Phone build targets.
Suggested-by: Stefan Neis
Feature: http://sourceforge.net/p/curl/feature-requests/82/
Visual Studio 2012 introduced support for Windows Store apps as well as
supporting Windows Phone 8. Introduced build targets that allow more
modern APIs to be used as certain legacy ones are not available on these
new platforms.
Rather than define the function as extern in the source files that use
it, moved the function declaration into the SASL header file just like
the Digest and NTLM clean-up functions.
Additionally, added a function description comment block.
Previously if HTTP/2 traffic is appended to HTTP Upgrade response header
(thus they are in the same buffer), the trailing HTTP/2 traffic is not
processed and lost. The appended data is most likely SETTINGS frame.
If it is lost, nghttp2 library complains server does not obey the HTTP/2
protocol and issues GOAWAY frame and curl eventually drops connection.
This commit fixes this problem and now trailing data is processed.
Fix detection of the AsynchDNS feature which not just depends on
pthreads support, but also on whether USE_POSIX_THREADS is set or not.
Caught by test 1014.
This patch adds a new ENABLE_THREADED_RESOLVER option (corresponding to
--enable-threaded-resolver of autotools) which also needs a check for
HAVE_PTHREAD_H.
For symmetry with autotools, CURL_USE_ARES is renamed to ENABLE_ARES
(--enable-ares). Checks that test for the availability actually use
USE_ARES instead as that is the result of whether a-res is available or
not (in practice this does not matter as CARES is marked as required
package, but nevertheless it is better to write the intent).
Signed-off-by: Peter Wu <peter@lekensteyn.nl>
In preparation for moving the NTLM message code into the SASL module,
and separating the native code from the SSPI code, added functions that
simply call the functions in curl_ntlm_msg.c.
USE_NTLM would only be defined if: HTTP support was enabled, NTLM and
cryptography weren't disabled, and either a supporting cryptography
library or Windows SSPI was being compiled against.
This means it was not possible to build libcurl without HTTP support
and use NTLM for other protocols such as IMAP, POP3 and SMTP. Rather
than introduce a new SASL pre-processor definition, removed the HTTP
prerequisite just like USE_SPNEGO and USE_KRB5.
Note: Winbind support still needs to be dependent on CURL_DISABLE_HTTP
as it is only available to HTTP at present.
This bug dates back to August 2011 when I started to add support for
NTLM to SMTP.
Reworked the input token (challenge message) storage as what is passed
to the buf and desc in the response generation are typically blobs of
data rather than strings, so this is more in keeping with other areas
of the SSPI code, such as the NTLM message functions.
This temporarily breaks HTTP digest authentication in SSPI based builds,
causing CURLE_NOT_BUILT_IN to be returned. A follow up commit will
resume normal operation.
Added forward declaration of digestdata to overcome the following
compilation warning:
warning: 'struct digestdata' declared inside parameter list
Additionally made the ntlmdata forward declaration dependent on
USE_NTLM similar to how digestdata and kerberosdata are.
To provide consistent behaviour between the various HTTP authentication
functions use CURLcode based error codes for Curl_input_digest()
especially as the calling code doesn't use the specific error code just
that it failed.
These were previously hard coded, and whilst defined in security.h,
they may or may not be present in old header files given that these
defines were never used in the original code.
Not only that, but there appears to be some ambiguity between the ANSI
and UNICODE NTLM definition name in security.h.
When duplicating a handle, the data to post was duplicated using
strdup() when it could be binary and contain zeroes and it was not even
zero terminated! This caused read out of bounds crashes/segfaults.
Since the lib/strdup.c file no longer is easily shared with the curl
tool with this change, it now uses its own version instead.
Bug: http://curl.haxx.se/docs/adv_20141105.html
CVE: CVE-2014-3707
Reported-By: Symeon Paraschoudis
- Prior to this change no SSL minimum version was set by default at
runtime for PolarSSL. Therefore in most cases PolarSSL would probably
have defaulted to a minimum version of SSLv3 which is no longer secure.
The previous condition that checked if the socket was marked as readable
when also adding a writable one, was incorrect and didn't take the pause
bits properly into account.
autotools does not use features.h nor _BSD_SOURCE. As this macro
triggers warnings since glibc 2.20, remove it. It should not have
functional differences.
Signed-off-by: Peter Wu <peter@lekensteyn.nl>
Typically the USE_WINDOWS_SSPI definition would not be used when the
CURL_DISABLE_CRYPTO_AUTH define is, however, it is still a valid build
configuration and, as such, the SASL Kerberos V5 (GSSAPI) authentication
data structures and functions would incorrectly be used when they
shouldn't be.
Introduced a new USE_KRB5 definition that takes into account the use of
CURL_DISABLE_CRYPTO_AUTH like USE_SPNEGO and USE_NTLM do.
Basically since servers often then don't respond well to this and
instead send the full contents and then libcurl would instead error out
with the assumption that the server doesn't support resume. As the data
is then already transfered, this is now considered fine.
Test case 1434 added to verify this. Test case 1042 slightly modified.
Reported-by: hugo
Bug: http://curl.haxx.se/bug/view.cgi?id=1443
Return a more appropriate error, rather than CURLE_OUT_OF_MEMORY when
acquiring the credentials handle fails. This is then consistent with
the code prior to commit f7e24683c4 when log-in credentials were empty.
Fixed the ability to use the current log-in credentials with DIGEST-MD5.
I had previously disabled this functionality in commit 607883f13c as I
couldn't get this to work under Windows 8, however, from testing HTTP
Digest authentication through Windows SSPI and then further testing of
this code I have found it works in Windows 7.
Some further investigation is required to see what the differences are
between Windows 7 and 8, but for now enable this functionality as the
code will return an error when AcquireCredentialsHandle() fails.
HTTP 1.1 is clearly specified to only allow three digit response codes,
and libcurl used sscanf("%3d") for that purpose. This made libcurl
support smaller numbers but not larger. It does now, but we will not
make any specific promises nor document this further since it is going
outside of what HTTP is.
Bug: http://curl.haxx.se/bug/view.cgi?id=1441
Reported-by: Balaji
Don't call CompleteAuthToken() after InitializeSecurityContext() has
returned SEC_I_CONTINUE_NEEDED as this return code only indicates the
function should be called again after receiving a response back from
the server.
This only affected the Digest and NTLM authentication code.
For consistency with other areas of the NTLM code propagate all errors
from Curl_ntlm_core_mk_nt_hash() up the call stack rather than just
CURLE_OUT_OF_MEMORY.
- Remove SSLv3 from SSL default in darwinssl, schannel, cyassl, nss,
openssl effectively making the default TLS 1.x. axTLS is not affected
since it supports only TLS, and gnutls is not affected since it already
defaults to TLS 1.x.
- Update CURLOPT_SSLVERSION doc
... for the local variable name in functions holding the return
code. Using the same name universally makes code easier to read and
follow.
Also, unify code for checking for CURLcode errors with:
if(result) or if(!result)
instead of
if(result == CURLE_OK), if(CURLE_OK == result) or if(result != CURLE_OK)
Prefer usage of Perl modules for sha1 calculation since there
might be systems where openssl is not installed or not in path.
If openssl is used for sha1 calculation then dont rely on cut
since it is usually not available on other systems than Linux.
It turned out some features were not enabled in the build since for
example url.c #ifdefs on features that are defined on a per-backend
basis but vtls.h didn't include the backend headers.
CURLOPT_CERTINFO was one such feature that was accidentally disabled.
There is no need for such function. Include_directories propagate by
themselves and having a function with one simple link statement makes
little sense.
Coverity CID 252518. This function is in general far too complicated for
its own good and really should be broken down into several smaller
funcitons instead - but I'm adding this protection here now since it
seems there's a risk the code flow can end up here and dereference a
NULL pointer.
Coverity CID 1241957. Removed the unused argument. As this struct and
pointer now are used only for krb5, there's no need to keep unused
function arguments around.
Option --pinnedpubkey takes a path to a public key in DER format and
only connect if it matches (currently only implemented with OpenSSL).
Provides CURLOPT_PINNEDPUBLICKEY for curl_easy_setopt().
Extract a public RSA key from a website like so:
openssl s_client -connect google.com:443 2>&1 < /dev/null | \
sed -n '/-----BEGIN/,/-----END/p' | openssl x509 -noout -pubkey \
| openssl rsa -pubin -outform DER > google.com.der
Coverify CID 1157776. Removed a superfluous if() that always evaluated
true (and an else clause that never ran), and then re-indented the
function accordingly.
Coverity CID 1215284. The server name is extracted with
Curl_copy_header_value() and passed in to this function, and
copy_header_value can actually can fail and return NULL.
