By reading the ->head pointer and using that instead of the ->size
number to figure out if there's a list remaining we avoid the (false
positive) clang-analyzer warning that we might dereference of a null
pointer.
I suspect this is a regression introduced in commit 207cf150, included
since 7.24.0.
Avoid showing '(nil)' as hostname in verbose output by making sure the
hostname fixup function is called early enough to set the pointers that
are used for this. The name data is set again for each request even for
re-used connections to handle multiple hostnames over the same
connection (like with proxy) or that the casing etc of the host name is
changed between requests (which has proven to be important at least once
in the past).
Test1011 was modified to use a redirect with a re-used a connection
since it then showed the bug and now lo longer does. There's currently
no easy way to have the test suite detect 'nil' texts in verbose ouputs
so no tests will detect if this problem gets reintroduced.
Bug: http://curl.haxx.se/mail/lib-2012-07/0111.html
Reported by: Gisle Vanem
We found a problem with ftp transfer using libcurl (7.23 and 7.25)
inside an application which is receiving unix signals (SIGUSR1,
SIGUSR2...) almost continuously. (Linux 2.4, PowerPC, HAVE_POLL_FINE
defined).
Curl_socket_check() uses poll() to wait for the socket, and retries it
when a signal is received (EINTR). However, if a signal is received and
it also happens that the timeout has been reached, Curl_socket_check()
returns -1 instead of 0 (indicating an error instead of a timeout).
In our case, the result is an aborted connection even before the ftp
banner is received from the server, and a return value of
CURLE_OUT_OF_MEMORY from curl_easy_perform() (Curl_pp_multi_statemach(),
in pingpong.c, actually returns OOM if Curl_socket_check() fails :-)
Funny to debug on a system on which OOM is a possible cause).
Bug: http://curl.haxx.se/mail/lib-2012-07/0122.html
Due to WSAPoll bugs, libcurl does not work as intended. When the cURL
library is used to setup a connection to an incorrect port, normally the
result is CURLE_COULDNT_CONNECT, /* 7 */, but due to the bug in WSAPoll,
the result now is CURLE_OPERATION_TIMEDOUT, /* 28 - the timeout time was
reached */.
On August 1, Jan Koen Annot opened a case for this to Microsoft Premier
Online (https://premier.microsoft.com/). The support engineer handling
the case wrote that the case description is quite clear. He will try to
reproduce the issue and then proceed with troubleshooting it.
Reported by: Jan Koen Annot
Bug: http://curl.haxx.se/mail/lib-2012-07/0310.html
When figuring out if the data stream needs to be rewound when the
request is to be resent, we must not access the HTTP struct unless the
protocol used is indeed HTTP...
Bug: http://curl.haxx.se/bug/view.cgi?id=3544688
Previously the curl_multi interface would freeze if darwinssl was
enabled and at least one of the handles tried to connect to a Web site
using HTTPS. Removed the "wouldblock" state darwinssl was using because
I figured out a solution for our "would block but in which direction?"
dilemma.
In many states the easy_conn pointer is referenced and just assumed to
be working. This is an added extra check since analyzing indicates
there's a risk we can end up in these states with a NULL pointer there.
A HEAD response has no body length and gets the headers like the
corresponding GET would so it should not get closed after the response
based on the same rules. This mistake caused connections that did HEAD
to get closed too often without a valid reason.
Bug: http://curl.haxx.se/bug/view.cgi?id=3542731
Reported by: Eelco Dolstra
The function https_getsock was only implemented properly when USE_SSLEAY
or USE_GNUTLS is defined, but it is also necessary for USE_SCHANNEL.
The problem occurs when Curl_read_plain or Curl_write_plain returns
CURLE_AGAIN. In that case CURL_OK is returned to the multi-interface an
the used socket is set to state CURL_POLL_REMOVE and the easy-state is
set to CURLM_STATE_PROTOCONNECT. This is fine, because later the socket
should be set to CURL_POLL_IN or CURL_POLL_OUT via multi_getsock. That's
where https_getsock is called and doesn't return any sockets.
The code was printing a warning when SNI was set up successfully. Oops.
Printing the cipher number in verbose mode was something only TLS/SSL
programmers might understand, so I had it print the name of the cipher,
just like in the OpenSSL code. That'll be at least a little bit easier
to understand. The SecureTransport API doesn't have a method of getting
a string from a cipher like OpenSSL does, so I had to generate the
strings manually.
When doing CONNECT requests, libcurl must make sure the connection is
alive as much as possible. NTLM requires it and it is generally good for
other cases as well.
NTLM over CONNECT requests has been broken since this regression I
introduced in my CONNECT cleanup commits that started with 41b0237834,
included since 7.25.0.
Bug: http://curl.haxx.se/bug/view.cgi?id=3538625
Reported by: Marcel Raad
Allow NTLM authentication when building using SecureTransport (Darwin) for SSL.
This uses CommonCrypto, a cryptography library that ships with all versions of
iOS and Mac OS X. It's like OpenSSL's libcrypto, except that it's missing a few
less-common cyphers and doesn't have a big number data structure.
Before commit 2dded8fedb (dec 2010) there was logic that used
RAND_screen() at times and now I remove the leftover #ifdef check for
it.
The seeding code that uses Curl_FormBoundary() in ossl_seed() is dubious
to keep since it hardly increases randomness but I fear I'll break
something if I remove it now...
- Renamed st_ function prefix to darwinssl_
- Renamed Curl_st_ function prefix to Curl_darwinssl_
- Moved the duplicated ssl_connect_done out of the #ifdef in lib/urldata.h
- Fixed a teensy little bug that made non-blocking connection attempts block
- Made it so that it builds cleanly against the iOS 5.1 SDK
Removed two, not intended to exist, RESOURCE declarations.
Bug: http://curl.haxx.se/bug/view.cgi?id=3535977
And sorted configuration hunks to reflect same internal order
as the one shown in the usage message.
Increase decrypted and encrypted cache buffers using limitted
doubling strategy. More information on the mailinglist:
http://curl.haxx.se/mail/lib-2012-06/0255.html
It updates the two remaining reallocations that have already been there
and fixes the other one to use the same "do we need to increase the
buffer"-condition as the other two. CURL_SCHANNEL_BUFFER_STEP_SIZE was
renamed to CURL_SCHANNEL_BUFFER_FREE_SIZE since that is actually what it
is now. Since we don't know how much more data we are going to read
during the handshake, CURL_SCHANNEL_BUFFER_FREE_SIZE is used as the
minimum free space required in the buffer for the next operation.
CURL_SCHANNEL_BUFFER_STEP_SIZE was used for that before, too, but since
we don't have a step size now, the define was renamed.
Process extra data buffer before returning from schannel_connect_step2.
Without this change I've seen WinCE hang when schannel_connect_step2
returns and calls Curl_socket_ready.
If the encrypted handshake does not fit in the intial buffer (seen with
large certificate chain), increasing the encrypted data buffer is necessary.
Fixed warning in curl_schannel.c line 1215.
Implemented timeout loop in schannel_send while sending data. This
is as close as I think we can get to write buffering; I put a big
comment in to explain my thinking.
With some committer adjustments
Make the Schannel implementation use libcurl's default buffer size
for the initial received encrypted and decrypted data cache buffers.
The implementation still needs to handle more data since more data
might have already been received or decrypted during the handshake
or a read operation which needs to be cached for the next read.
curl_schannel.c - implemented graceful SSL shutdown. If we fail to
shutdown the connection gracefully, I've seen schannel try to use a
session ID for future connects and the server aborts the connection
during the handshake.
curl_schannel.c - auto certificate validation doesn't seem to work
right on CE. I added a method to perform the certificate validation
which uses CertGetCertificateChain and manually handles the result.
Coverity actually pointed out flawed logic in the previous call to
Curl_strntoupper() where the code used sizeof() of a pointer to pass in
a size argument. That code still worked since it only needed to
uppercase 4 letters. Still, the entire malloc/uppercase/free sequence
was pointless since the code has already matched the string once in the
condition that starts the block of code.
As spotted by Coverity, va_end() was not used previously. To make it
used I took away a bunch of return statements and made them into
assignments instead.
SSPI related code now compiles with ANSI and WCHAR versions of security
methods (WinCE requires WCHAR versions of methods).
Pulled UTF8 to WCHAR conversion methods out of idn_win32.c into their own file.
curl_sasl.c - include curl_memory.h to use correct memory functions.
getenv.c and telnet.c - WinCE compatibility fix
With some committer adjustments
Building with CyaSSL failed compilation. Reason being that OCSP_REQUEST and
OCSP_RESPONSE are enum values in CyaSSL and defines in <wincrypt.h> included
via <winldap.h> in ldap.c.
http://curl.haxx.se/mail/lib-2012-06/0196.html
Version number is removed in order to make this info consistent with
how we do it with other MS and Linux system libraries for which we don't
provide this info.
Identifier changed from 'WinSSPI' to 'schannel' given that this is the
actual provider of the SSL/TLS support. libcurl can still be built with
SSPI and without SCHANNEL support.
Removed obsolete minor status variable and parameter of status function
which was never used or set at all. Also Curl_sspi_strerror does support
only one status and there is no need for a second sub status.
Added Windows SSPI version information to the curl version string when
SCHANNEL SSL is not enabled, as the version of the library should also
be included when SSPI is used to generate security contexts.
Removed SSPI from the feature list as the features are GSS-Negotiate,
NTLM and SSL depending on the usage of the SSPI library.
Removed duplicate blank lines.
Removed spaces between the not and test in various if statements.
Removed explicit test of NULL in an if statement.
Placed function returns on same line as function declarations.
Replaced the use of curl_maprintf() with aprintf() as it is the
preprocessor job to do this substitution if ENABLE_CURLX_PRINTF
is set.
curl_sspi.c: Fixed mingw32-gcc compiler warnings
curl_sspi.c: Fixed length of error code hex output
The hex value was printed as signed 64-bit value on 64-bit systems:
SEC_E_WRONG_PRINCIPAL (0xFFFFFFFF80090322)
It is now correctly printed as the following:
SEC_E_WRONG_PRINCIPAL (0x80090322)
curl_sspi.c: Fallback to security function table version number
Instead of reporting an unknown version, the interface version is used.
curl_sspi.c: Removed SSPI/ version prefix from Curl_sspi_version
curl_schannel: Replaced static buffer sizes with defined names
curl_schannel.c: First brace when declaring functions on column 0
curl_schannel.c: Put the pointer sign directly at variable name
curl_schannel.c: Use structs directly instead of typedef'ed structs
curl_schannel.c: Removed space before opening brace
curl_schannel.c: Fixed lines being longer than 80 chars
Moved the error constant switch to curl_sspi.c and added two new helper
functions to curl_sspi.[ch] which either return the constant or a fully
translated message representing the SSPI security status.
Updated socks_sspi.c and curl_schannel.c to use the new functions.
Windows 2000 Professional: Schannel returns SEC_E_OK instead
of SEC_I_CONTEXT_EXPIRED. If the length of the output buffer
is zero and the first byte of the encrypted packet is 0x15,
the application can safely assume that the message was a
close_notify message and change the return value to
SEC_I_CONTEXT_EXPIRED.
Connection shutdown does not mean that there is no data to read
Correctly handle incomplete message and ask curl to re-read
Fixed buffer for decrypted being to small
Re-structured read condition to be more effective
Removed obsolete verbose messages
Changed memory reduction method to keep a minimum buffer of size 4096
Fixed warning: dereferencing pointer does break strict-aliasing rules
by using a union instead of separate pointer variables.
Internal union sockaddr_u could probably be moved to generic header.
Thanks to Paul Howarth for the hint about using unions for this.
Important for winbuild: Separate declaration of sockaddr_u pointer.
The pointer variable *sock cannot be declared and initialized right
after the union declaration. Therefore it has to be a separate statement.
Since Curl_pgrsDone() itself calls Curl_pgrsUpdate() which may return an
abort instruction or similar we need to return that info back and
subsequently properly handle return codes from Curl_pgrsDone() where
used.
(Spotted by a Coverity scan)
Previously it would use a 256 byte buffer and thus cut off very long
subject names. The limit is now upped to the receive buffer size, 16K.
Bug: http://curl.haxx.se/bug/view.cgi?id=3533045
Reported by: Anthony G. Basile
Re-factored the smtp_state_*_resp() functions to 1) Match the constants
that were refactored in commit 00fddba672, 2) To be more readable and
3) To match their counterparties in pop3.c.
Corrected lines longer than 78 characters.
Removed unnecessary braces in smtp_state_helo_resp().
Introduced some comments in data sending functions.
Tidied up comments to match changes made in pop3.c.
Corrected lines longer than 78 characters.
Changed POP3_AUTH_FINAL to POP3_AUTH to match SMTP code now that the
AUTH command is no longer sent on its own.
Introduced some comments in data sending functions.
Another attempt at trying to rational code and comment style.
Added a service type parameter to Curl_sasl_create_digest_md5_message()
to allow the function to be used by different services rather than being
hard coded to "smtp".
Not all SASL enabled POP3 servers support the AUTH command on its own
when trying to detect the supported mechanisms. As such changed the
mechanism detection to use the CAPA command instead.
Because pop3_endofresp() is called for each line of data yet is not
passed the line and line length, so we have to use the data pointed to
by pp->linestart_resp which contains the whole packet, the mechanisms
were being detected in one call yet the function would be called for
each line of data.
Using curl with verbose mode enabled would show that one line of data
would be received in response to the AUTH command, before the AUTH
<mechanism> command was sent to the server and then the next few lines
of the original AUTH command would be displayed before the response from
the AUTH <mechanism> command. This would then cause problems when
parsing the CRAM-MD5 challenge data as extra data was contained in the
buffer.
Changed the parsing so that each line is checked for the mechanisms
and the function returns FALSE until the whole of the AUTH response has
been processed.
Previously it wasn't possible to connect to POP3 and not specify the
user name as a CURLE_ACCESS_DENIED error would be returned. This error
occurred because USER would be sent to the server with a blank user name
if no mailbox user was specified as the server would reply with -ERR.
This wasn't a problem prior to the 7.26.0 release but with the
introduction of custom commands the user and/or application developer
might want to issue a CAPA command without having to log in as a
specific mailbox user.
Additionally this fix won't send the newly introduced AUTH command if no
user name is specified.
Rather than encoding the password message itself the
smtp_state_authpasswd_resp() function now delegates the work to the same
function that smtp_state_authlogin_resp() and smtp_authenticate() use
when constructing the encoded user name.
In preparation for moving to the SASL module re-factored the
smtp_auth_login_user() function to smtp_auth_login() so that it can be
used for both user names and passwords as sending both of these under
the login authentication mechanism is the same.
The POP3 protocol doesn't really have the concept of error codes and
uses +, +OK and -ERR in response to commands to indicate continue,
success and error.
The AUTH command is one of those commands that requires multiple pieces
of data to be sent to the server where the server will respond with + as
part of the handshaking. This meant changing the values before
continuing with the next stage of adding authentication support.
Changed the order of the state machine to match the order of actual
events.
Reworked some comments and function parameter positioning that I missed
the other day.
Added support for detecting the supported SASL authentication mechanisms
via the AUTH command. There are two ways of detecting them, either by
using the AUTH command, that will return -ERR if not supported or by
using the CAPA command which will return SASL and the list of mechanisms
if supported, not include SASL if SASL authentication is not supported
or -ERR if the CAPA command is not supported. As such it seems simpler
to use the AUTH command and fallback to normal clear text authentication
if the the command is not supported.
Additionally updated the test cases to return -ERR when the AUTH command
is encountered. Additional test cases will be added when support for the
individual authentication mechanisms is added.
Moved EOB definition into header file.
Switched the logic around in pop3_endofresp() to allow for the
introduction of auth-mechanism detection.
Repositioned second and third function variables where they will fit
within the 78 character line limit.
Tidied up some comments.
Move the SMTP_AUTH constants into a separate header file in
preparation for adding SASL based authentication to POP3 as the two
protocols will need to share them.
Due to the result code being reset to CURLE_OK when smtp_dophase_done()
was called, postdata would incorrectly be sent to the server when the
MAIL FROM or RCPT command was rejected.
As such, libcurl would return the wrong result code from performing the
operation and additionally set CURLINFO_RESPONSE_CODE to be that
returned by the postdata command.
Bug: http://curl.haxx.se/mail/lib-2012-05/0108.html
Reported by: Gokhan Sengun
In nettle/md5.h, md5_init and md5_update are defined as macros to
nettle_md5_init and nettle_md5_update respectively. This causes
error when using MD5_params.md5_init and md5_update. This patch
renames these members as md5_init_func and md5_update_func to
avoid name conflict. For completeness, MD5_params.md5_final was
also renamed as md5_final_func.
The changes in curl_ntlm_core.c is conversion error and fixed by
casting to proper type.
A dot character at the beginning of a line would not be escaped to a
double dot as required by RFC-2821, instead it would be deleted by the
mail server. Please see section 4.5.2 of the RFC for more information.
Note: This fix also simplifies the detection of repeated CRLF.CRLF
combinations, such as CRLF.CRLF.CRLF, a little rather than having to
advance the eob counter to 2.
Roman Mamedov spotted (in
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=670126) that curl would
not complain when given a URL with an IPv6 numerical address without
brackets. It would simply cut off the last ":[hex]" part and thus not
work correctly.
That's a URL using an illegal syntax and now libcurl will instead return
a clear error code and error message detailing the error.
The above mentioned bug report claims this to be a regression but
libcurl does not guarantee functionality when given URLs that aren't
following the URL spec (RFC3986 mostly). I consider the fact that it
used to handle this differently a mere coincidence.
When doing a chunked-encoded POST with -d (CURLOPT_POSTFIELDS) and the
size of the POST was zero length, it made libcurl first send a zero
chunk and then the terminating one. This could confuse a receiver and it
should rather just send the terminating chunk as it does with this fix.
Test case 1333 is added to verify.
Bug: http://curl.haxx.se/mail/archive-2012-04/0060.html
Reported by: Arnaud Compan
Commit 9109cdec11 brought this regression (shipped since 7.24.0).
The singleipconnect() function must not return an error if Curl_socket()
returns an error. It should then simply return OK and pass a SOCKET_BAD
back simply because that is how the user of this function expects it to
work and something else is not fine.
Reported by: Blaise Potard
Bug: http://curl.haxx.se/bug/view.cgi?id=3516508
Include stdbool.h only when it is available and configure is capable of
detecting a proper 'bool' data type when the header is included.
Compilation fix for old or unpatched versions of XL C compiler.
Report: http://curl.haxx.se/mail/archive-2012-04/0022.html
NSS_InitContext() was introduced in NSS 3.12.5 and helps to prevent
collisions on NSS initialization/shutdown with other libraries.
Bug: https://bugzilla.redhat.com/738456
configure script now provides conditional definitions for Makefile.am
that result in CURL_HIDDEN_SYMBOLS being defined by resulting makefiles
when appropriate.
Additionally, configure script option for symbol hiding control is now
named --enable-symbol-hiding --disable-symbol-hiding. While still valid,
old option name --enable-hidden-symbols --disable-hidden-symbols will
be deprecated in some future release.
BUILDING_LIBCURL and CURL_STATICLIB are no longer defined in curl_config.h,
configure will generate appropriate conditionals so that mentioned symbols
get defined and used in Makefiles at compilation time
Configuration files such as curl_config.h and all config-*.h no longer exist
nor are generated/copied into 'src' directory, now these only exist in 'lib'
directory from where curl tool sources uses them.
Additionally old src/setup.h has been refactored into src/tool_setup.h which
now pulls lib/setup.h
The possibility of a makefile needing an include path adjustment exists.
Daniel Stenberg