- Add new option CURLOPT_SUPPRESS_CONNECT_HEADERS to allow suppressing
proxy CONNECT response headers from the user callback functions
CURLOPT_HEADERFUNCTION and CURLOPT_WRITEFUNCTION.
- Add new tool option --suppress-connect-headers to expose
CURLOPT_SUPPRESS_CONNECT_HEADERS and allow suppressing proxy CONNECT
response headers from --dump-header and --include.
Assisted-by: Jay Satiro
Assisted-by: CarloCannas@users.noreply.github.com
Closes https://github.com/curl/curl/pull/783
A client MUST ignore any Content-Length or Transfer-Encoding header
fields received in a successful response to CONNECT.
"Successful" described as: 2xx (Successful). RFC 7231 4.3.6
Prior to this change such a case would cause an error.
In some ways this bug appears to be a regression since c50b878. Prior to
that libcurl may have appeared to function correctly in such cases by
acting on those headers instead of causing an error. But that behavior
was also incorrect.
Bug: https://github.com/curl/curl/issues/1317
Reported-by: mkzero@users.noreply.github.com
This flag is meant for the current request based on authentication
state, once the request is done we can clear the flag.
Also change auth.multi to auth.multipass for better readability.
Fixes https://github.com/curl/curl/issues/1095
Closes https://github.com/curl/curl/pull/1326
Signed-off-by: Isaac Boukris <iboukris@gmail.com>
Reported-by: Michael Kaufmann
This commit introduces the CURL_SSLVERSION_MAX_* constants as well as
the --tls-max option of the curl tool.
Closes https://github.com/curl/curl/pull/1166
This fixes assertion error which occurs when redirect is done with 0
length body via HTTP/2, and the easy handle is reused, but new
connection is established due to hostname change:
curl: http2.c:1572: ssize_t http2_recv(struct connectdata *,
int, char *, size_t, CURLcode *):
Assertion `httpc->drain_total >= data->state.drain' failed.
To fix this bug, ensure that http2_handle_stream is called.
Fixes#1286Closes#1302
... because it causes confusion with users. Example URLs:
"http://[127.0.0.1]:11211:80" which a lot of languages' URL parsers will
parse and claim uses port number 80, while libcurl would use port number
11211.
"http://user@example.com:80@localhost" which by the WHATWG URL spec will
be treated to contain user name 'user@example.com' but according to
RFC3986 is user name 'user' for the host 'example.com' and then port 80
is followed by "@localhost"
Both these formats are now rejected, and verified so in test 1260.
Reported-by: Orange Tsai
Mark intended fallthroughs with /* FALLTHROUGH */ so that gcc will know
it's expected and won't warn on [-Wimplicit-fallthrough=].
Closes https://github.com/curl/curl/pull/1297
In DarwinSSL the SSLSetPeerDomainName function is used to enable both
sending SNI and verifying the host. When host verification is disabled
the function cannot be called, therefore SNI is disabled as well.
Closes https://github.com/curl/curl/pull/1240
If size_t is 32 bits, MSVC warns:
warning C4310: cast truncates constant value
The warning is harmless as CURL_MASK_SCOFFT gets
truncated to the maximum value of size_t.
If the compile-time CURL_CA_BUNDLE location is defined use it as the
default value for the proxy CA bundle location, which is the same as
what we already do for the regular CA bundle location.
Ref: https://github.com/curl/curl/pull/1257
- Change CURLOPT_PROXY_CAPATH to return CURLE_NOT_BUILT_IN if the option
is not supported, which is the same as what we already do for
CURLOPT_CAPATH.
- Change the curl tool to handle CURLOPT_PROXY_CAPATH error
CURLE_NOT_BUILT_IN as a warning instead of as an error, which is the
same as what we already do for CURLOPT_CAPATH.
- Fix CAPATH docs to show that CURLE_NOT_BUILT_IN is returned when the
respective CAPATH option is not supported by the SSL library.
Ref: https://github.com/curl/curl/pull/1257
The CURLOPT_SSL_VERIFYSTATUS option was not properly handled by libcurl
and thus even if the status couldn't be verified, the connection would
be allowed and the user would not be told about the failed verification.
Regression since cb4e2be7c6
CVE-2017-2629
Bug: https://curl.haxx.se/docs/adv_20170222.html
Reported-by: Marcus Hoffmann
- on the first invocation: keep security context returned by
InitializeSecurityContext()
- on subsequent invocations: use MakeSignature() instead of
InitializeSecurityContext() to generate HTTP digest response
Bug: https://github.com/curl/curl/issues/870
Reported-by: Andreas Roth
Closes https://github.com/curl/curl/pull/1251
Properly resolve, convert and log the proxy host names.
Support the "--connect-to" feature for SOCKS proxies and for passive FTP
data transfers.
Follow-up to cb4e2be
Reported-by: Jay Satiro
Fixes https://github.com/curl/curl/issues/1248
- While negotiating auth during PUT/POST if a user-specified
Content-Length header is set send 'Content-Length: 0'.
This is what we do already in HTTPREQ_POST_FORM and what we did in the
HTTPREQ_POST case (regression since afd288b).
Prior to this change no Content-Length header would be sent in such a
case.
Bug: https://curl.haxx.se/mail/lib-2017-02/0006.html
Reported-by: Dominik Hölzl
Closes https://github.com/curl/curl/pull/1242
Builds with axTLS 2.1.2. This then also breaks compatibility with axTLS
< 2.1.0 (the older API)
... and fix the session_id mixup brought in 04b4ee549Fixes#1220
If the NSS code was in the middle of a non-blocking handshake and it
was asked to finish the handshake in blocking mode, it unexpectedly
continued in the non-blocking mode, which caused a FTPS connection
over CONNECT to fail with "(81) Socket not ready for send/recv".
Bug: https://bugzilla.redhat.com/1420327
When removing an easy handler from a multi before it completed its
transfer, and it had pushed streams, it would segfault due to the pushed
counted not being cleared.
Fixed-by: zelinchen@users.noreply.github.comFixes#1249
Using sftp to delete a file with CURLOPT_NOBODY set with a reused
connection would fail as curl expected to get some data. Thus it would
retry the command again which fails as the file has already been
deleted.
Fixes#1243
The information extracted from the server certificates in step 3 is only
used when in verbose mode, and there is no error handling or validation
performed as that has already been done. Only run the certificate
information extraction when in verbose mode and libcurl was built with
verbose strings.
Closes https://github.com/curl/curl/pull/1246
- Remove the SNI disabled when host verification disabled message
since that is incorrect.
- Show a message for legacy versions of Windows <= XP that connections
may fail since those versions of WinSSL lack SNI, algorithms, etc.
Bug: https://github.com/curl/curl/pull/1240
SSL_CTX_add_extra_chain_cert takes ownership of the given certificate
while, despite the similar name, SSL_CTX_add_client_CA does not. Thus
it's best to call SSL_CTX_add_client_CA before
SSL_CTX_add_extra_chain_cert, while the code still has ownership of the
argument.
Closes https://github.com/curl/curl/pull/1236
This repairs cookies for localhost.
Non-PSL builds will now only accept "localhost" without dots, while PSL
builds okeys everything not listed as PSL.
Added test 1258 to verify.
This was a regression brought in a76825a5ef
Replace use of fixed macro BUFSIZE to define the size of the receive
buffer. Reappropriate CURLOPT_BUFFERSIZE to include enlarging receive
buffer size. Upon setting, resize buffer if larger than the current
default size up to a MAX_BUFSIZE (512KB). This can benefit protocols
like SFTP.
Closes#1222
Regression since 1d4202ad, which moved the buffer into a more narrow
scope, but the data in that buffer was used outside of that more narrow
scope.
Reported-by: Dan Fandrich
Bug: https://curl.haxx.se/mail/lib-2017-01/0093.html
curl_addrinfo.c:519:20: error: conversion to ‘curl_socklen_t {aka
unsigned int}’ from ‘long unsigned int’ may alter its value
[-Werror=conversion]
Follow-up to 1d786faee1
In addition to unix domain sockets, Linux also supports an
abstract namespace which is independent of the filesystem.
In order to support it, add new CURLOPT_ABSTRACT_UNIX_SOCKET
option which uses the same storage as CURLOPT_UNIX_SOCKET_PATH
internally, along with a flag to specify abstract socket.
On non-supporting platforms, the abstract address will be
interpreted as an empty string and fail gracefully.
Also add new --abstract-unix-socket tool parameter.
Signed-off-by: Isaac Boukris <iboukris@gmail.com>
Reported-by: Chungtsun Li (typeless)
Reviewed-by: Daniel Stenberg
Reviewed-by: Peter Wu
Closes#1197Fixes#1061
It made the german ß get converted to ss, IDNA2003 style, and we can't
have that for the .de TLD - a primary reason for our switch to IDNA2008.
Test 165 verifies.
Under condition using http_proxy env var, noproxy list was the
combination of --noproxy option and NO_PROXY env var previously. Since
this commit, --noproxy option overrides NO_PROXY environment variable
even if use http_proxy env var.
Closes#1140
If defined CURL_DISABLE_HTTP, detect_proxy() returned NULL. If not
defined CURL_DISABLE_HTTP, detect_proxy() checked noproxy list.
Thus refactor to set proxy to NULL instead of calling detect_proxy() if
define CURL_DISABLE_HTTP, and refactor to call detect_proxy() if not
define CURL_DISABLE_HTTP and the host is not in the noproxy list.
The combination of --noproxy option and http_proxy env var works well
both for proxied hosts and non-proxied hosts.
However, when combining NO_PROXY env var with --proxy option,
non-proxied hosts are not reachable while proxied host is OK.
This patch allows us to access non-proxied hosts even if using NO_PROXY
env var with --proxy option.
Check for presence of gnutls_alpn_* and gnutls_ocsp_* functions during
configure instead of relying on the version number. GnuTLS has options
to turn these features off and we ca just work with with such builds
like we work with older versions.
Signed-off-by: Marcus Hoffmann <m.hoffmann@cartelsol.com>
Closes#1204
Follow-up to 3463408.
Prior to 3463408 file:// hostnames were silently stripped.
Prior to this commit it did not work when a schemeless url was used with
file as the default protocol.
Ref: https://curl.haxx.se/mail/lib-2016-11/0081.html
Closes https://github.com/curl/curl/pull/1124
Also fix for drive letters:
- Support --proto-default file c:/foo/bar.txt
- Support file://c:/foo/bar.txt
- Fail when a file:// drive letter is detected and not MSDOS/Windows.
Bug: https://github.com/curl/curl/issues/1187
Reported-by: Anatol Belski
Assisted-by: Anatol Belski
Both IMAP and POP3 response characters are used internally, but when
appended to the STARTTLS denial message likely could confuse the user.
Closes https://github.com/curl/curl/pull/1203
Fixed an old leftover use of the USE_SSLEAY define which would make a
socket get removed from the applications sockets to monitor when the
multi_socket API was used, leading to timeouts.
Bug: #1174
Visual C++ complained:
warning C4267: '=': conversion from 'size_t' to 'long', possible loss of data
warning C4701: potentially uninitialized local variable 'path' used
Fixes a few issues in manual wildcard cert name validation in
schannel support code for Win32 CE:
- when comparing the wildcard name to the hostname, the wildcard
character was removed from the cert name and the hostname
was checked to see if it ended with the modified cert name.
This allowed cert names like *.com to match the connection
hostname. This violates recommendations from RFC 6125.
- when the wildcard name in the certificate is longer than the
connection hostname, a buffer overread of the connection
hostname buffer would occur during the comparison of the
certificate name and the connection hostname.
It doesn't benefit us much as the connection could get closed at
any time, and also by checking we lose the ability to determine
if the socket was closed by reading zero bytes.
Reported-by: Michael Kaufmann
Closes https://github.com/curl/curl/pull/1134
CURLOPT_SOCKS_PROXY -> CURLOPT_PRE_PROXY
Added the corresponding --preroxy command line option. Sets a SOCKS
proxy to connect to _before_ connecting to a HTTP(S) proxy.
This was added as part of the SOCKS+HTTPS proxy merge but there's no
need to support this as we prefer to have the protocol specified as a
prefix instead.
ERR_PACK is an internal detail of OpenSSL. Also, when using it, a
function name must be specified which is overly specific: the test will
break whenever OpenSSL internally change things so that a different
function creates the error.
Closes#1157
Since it now reads responses one byte a time, a loop could be removed
and it is no longer limited to get the whole response within 16K, it is
now instead only limited to 16K maximum header line lengths.
... so that it doesn't read data that is actually coming from the
remote. 2xx responses have no body from the proxy, that data is from the
peer.
Fixes#1132
A server MUST NOT send any Transfer-Encoding or Content-Length header
fields in a 2xx (Successful) response to CONNECT. (RFC 7231 section
4.3.6)
Also fixes the three test cases that did this.
If a port number in a "connect-to" entry does not match, skip this
entry instead of connecting to port 0.
If a port number in a "connect-to" entry matches, use this entry
and look no further.
Reported-by: Jay Satiro
Assisted-by: Jay Satiro, Daniel Stenberg
Closes#1148
Adds access to the effectively used protocol/scheme to both libcurl and
curl, both in string and numeric (CURLPROTO_*) form.
Note that the string form will be uppercase, as it is just the internal
string.
As these strings are declared internally as const, and all other strings
returned by curl_easy_getinfo() are de-facto const as well, string
handling in getinfo.c got const-ified.
Closes#1137
vtls/gtls.c: In function ‘Curl_gtls_data_pending’:
vtls/gtls.c:1429:3: error: this ‘if’ clause does not guard... [-Werror=misleading-indentation]
if(conn->proxy_ssl[connindex].session &&
^~
vtls/gtls.c:1433:5: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘if’
return res;
* HTTPS proxies:
An HTTPS proxy receives all transactions over an SSL/TLS connection.
Once a secure connection with the proxy is established, the user agent
uses the proxy as usual, including sending CONNECT requests to instruct
the proxy to establish a [usually secure] TCP tunnel with an origin
server. HTTPS proxies protect nearly all aspects of user-proxy
communications as opposed to HTTP proxies that receive all requests
(including CONNECT requests) in vulnerable clear text.
With HTTPS proxies, it is possible to have two concurrent _nested_
SSL/TLS sessions: the "outer" one between the user agent and the proxy
and the "inner" one between the user agent and the origin server
(through the proxy). This change adds supports for such nested sessions
as well.
A secure connection with a proxy requires its own set of the usual SSL
options (their actual descriptions differ and need polishing, see TODO):
--proxy-cacert FILE CA certificate to verify peer against
--proxy-capath DIR CA directory to verify peer against
--proxy-cert CERT[:PASSWD] Client certificate file and password
--proxy-cert-type TYPE Certificate file type (DER/PEM/ENG)
--proxy-ciphers LIST SSL ciphers to use
--proxy-crlfile FILE Get a CRL list in PEM format from the file
--proxy-insecure Allow connections to proxies with bad certs
--proxy-key KEY Private key file name
--proxy-key-type TYPE Private key file type (DER/PEM/ENG)
--proxy-pass PASS Pass phrase for the private key
--proxy-ssl-allow-beast Allow security flaw to improve interop
--proxy-sslv2 Use SSLv2
--proxy-sslv3 Use SSLv3
--proxy-tlsv1 Use TLSv1
--proxy-tlsuser USER TLS username
--proxy-tlspassword STRING TLS password
--proxy-tlsauthtype STRING TLS authentication type (default SRP)
All --proxy-foo options are independent from their --foo counterparts,
except --proxy-crlfile which defaults to --crlfile and --proxy-capath
which defaults to --capath.
Curl now also supports %{proxy_ssl_verify_result} --write-out variable,
similar to the existing %{ssl_verify_result} variable.
Supported backends: OpenSSL, GnuTLS, and NSS.
* A SOCKS proxy + HTTP/HTTPS proxy combination:
If both --socks* and --proxy options are given, Curl first connects to
the SOCKS proxy and then connects (through SOCKS) to the HTTP or HTTPS
proxy.
TODO: Update documentation for the new APIs and --proxy-* options.
Look for "Added in 7.XXX" marks.
- Fix connection reuse for when the proposed new conn 'needle' has a
specified local port but does not have a specified device interface.
Bug: https://curl.haxx.se/mail/lib-2016-11/0137.html
Reported-by: bjt3[at]hotmail.com
Visual C++ now complains about implicitly casting time_t (64-bit) to
long (32-bit). Fix this by changing some variables from long to time_t,
or explicitly casting to long where the public interface would be
affected.
Closes#1131
- In Curl_http2_switched don't call memcpy when src is NULL.
Curl_http2_switched can be called like:
Curl_http2_switched(conn, NULL, 0);
.. and prior to this change memcpy was then called like:
memcpy(dest, NULL, 0)
.. causing address sanitizer to warn:
http2.c:2057:3: runtime error: null pointer passed as argument 2, which
is declared to never be null
Now Curl_rand() is made to fail if it cannot get the necessary random
level.
Changed the proto of Curl_rand() slightly to provide a number of ints at
once.
Moved out from vtls, since it isn't a TLS function and vtls provides
Curl_ssl_random() for this to use.
Discussion: https://curl.haxx.se/mail/lib-2016-11/0119.html
Previously, the [host] part was just ignored which made libcurl accept
strange URLs misleading users. like "file://etc/passwd" which might've
looked like it refers to "/etc/passwd" but is just "/passwd" since the
"etc" is an ignored host name.
Reported-by: Mike Crowe
Assisted-by: Kamil Dudka
- Fix GnuTLS code for CURL_SSLVERSION_TLSv1_2 that broke when the
TLS 1.3 support was added in 6ad3add.
- Homogenize across code for all backends the error message when TLS 1.3
is not available to "<backend>: TLS 1.3 is not yet supported".
- Return an error when a user-specified ssl version is unrecognized.
---
Prior to this change our code for some of the backends used the
'default' label in the switch statement (ie ver unrecognized) for
ssl.version and treated it the same as CURL_SSLVERSION_DEFAULT.
Bug: https://curl.haxx.se/mail/lib-2016-11/0048.html
Reported-by: Kamil Dudka
We're mostly saying just "curl" in lower case these days so here's a big
cleanup to adapt to this reality. A few instances are left as the
project could still formally be considered called cURL.
- Call Curl_initinfo on init and duphandle.
Prior to this change the statistical and informational variables were
simply zeroed by calloc on easy init and duphandle. While zero is the
correct default value for almost all info variables, there is one where
it isn't (filetime initializes to -1).
Bug: https://github.com/curl/curl/issues/1103
Reported-by: Neal Poole
...to use the public function curl_strnequal(). This isn't ideal because
it adds extra overhead to any internal calls to checkprefix.
follow-up to 95bd2b3e
As they are after all part of the public API. Saves space and reduces
complexity. Remove the strcase defines from the curlx_ family.
Suggested-by: Dan Fandrich
Idea: https://curl.haxx.se/mail/lib-2016-10/0136.html
This should fix the "warning: 'curl_strequal' redeclared without
dllimport attribute: previous dllimport ignored" message and subsequent
link error on Windows because of the missing CURL_EXTERN on the
prototype.
