_ _ ____ _ ___| | | | _ \| | / __| | | | |_) | | | (__| |_| | _ <| |___ \___|\___/|_| \_\_____| Changelog Daniel (23 June 2006) - Arve Knudsen found a flaw in curl_multi_fdset() for systems where curl_socket_t is unsigned (like Windows) that could cause it to wrongly return a max fd of -1. Daniel (20 June 2006) - Peter Silva introduced CURLOPT_MAX_SEND_SPEED_LARGE and CURLOPT_MAX_RECV_SPEED_LARGE that limit tha maximum rate libcurl is allowed to send or receive data. This kind of adds the the command line tool's option --limit-rate to the library. The rate limiting logic in the curl app is now removed and is instead provided by libcurl itself. Transfer rate limiting will now also work for -d and -F, which it didn't before. Daniel (19 June 2006) - Made -K on a file that couldn't be read cause a warning to be displayed. Daniel (13 June 2006) - Dan Fandrich implemented --enable-hidden-symbols configure option to enable -fvisibility=hidden on gcc >= 4.0. This reduces the size of the libcurl binary and speeds up dynamic linking by hiding all the internal symbols from the symbol table. Version 7.15.4 (12 June 2006) Daniel (8 June 2006) - Brian Dessent fixed the code for cygwin in three distinct ways: The first modifies {lib,src}/setup.h to not include the winsock headers under Cygwin. This fixes the reported build problem. Cygwin attempts as much as possible to emulate a posix environment under Windows. This means that WIN32 is *not* #defined and (to the extent possible) everything is done as it would be on a *ix type system. Thus is the proper include, and even though winsock2.h is present, including it just introduces a whole bunch of incompatible socket API stuff. The second is a patch I've included in the Cygwin binary packages for a while. It skips two unnecessary library checks (-lwinmm and -lgdi32). The checks are innocuous and they do succeed, but they pollute LIBS with unnecessary stuff which gets recorded as such in the libcurl.la file, which brings them into the build of any libcurl-downstream. As far as I know these libs are really only necessary for mingw, so alternatively they could be designed to only run if $host matches *-*-mingw* but I took the safer route of skipping them for *-*-cygwin*. The third patch replaces all uses of the ancient and obsolete __CYGWIN32__ with __CYGWIN__. Ref: . Daniel (7 June 2006) - Mikael Sennerholm provided a patch that added NTLM2 session response support to libcurl. The 21 NTLM test cases were again modified to comply... Daniel (27 May 2006) - Óscar Morales Vivó updated the libcurl.framework.make file. Daniel (26 May 2006) - Olaf Stüben fixed a bug that caused Digest authentication with md5-sess to fail. When using the md5-sess, the result was not Md5 encoded and Base64 transformed. Daniel (25 May 2006) - Michael Wallner provided a patch that allows "SESS" to be set with CURLOPT_COOKIELIST, which then makes all session cookies get cleared. Daniel (24 May 2006) - Tor Arntsen made test 271 run fine again since the TFTP path fix. Daniel (23 May 2006) - Martin Michlmayr filed debian bug report #367954, but the same error also showed up in the autobuilds. It seems a rather long-since introduced shell script flaw in the configure script suddenly was detected by the bash version in Debian Unstable. It had previously passed undetected by all shells used so far... - David McCreedy updated lib/config-tpf.h Daniel (11 May 2006) - Fixed the configure's check for old-style SSLeay headers since I fell over a case with a duplicate file name (a krb4 implementation with an err.h file). I converted the check to manually make sure three of the headers are present before considering them fine. - David McCreedy provided a fix for CURLINFO_LASTSOCKET that does extended checks on the to-be-returned socket to make sure it truly seems to be alive and well. For SSL connection it (only) uses OpenSSL functions. Daniel (10 May 2006) - Fixed DICT in two aspects: 1 - allow properly URL-escaped words, like using %20 for spaces 2 - properly escape certain letters within a word to comply to the RFC2229 Daniel (9 May 2006) - Andreas Ntaflos reported a bug in libcurl.m4: When configuring my GNU autotools project, which optionally (default=yes) uses libcurl on a system without a (usable) libcurl installation, but not specifying `--without-libcurl', configure determines correctly that no libcurl is available, however, the LIBCURL variable gets expanded to `LIBCURL = -lcurl' in the resulting Makefiles. David Shaw fixed the flaw. - Robson Braga Araujo fixed two problems in the recently added non-blocking SSL connects. The state machine was not reset properly so that subsequent connects using the same handle would fail, and there were two memory leaks. - Robson Braga Araujo fixed a memory leak when you added an easy handle to a multi stack and that easy handle had already been used to do one or more easy interface transfers, as then the code threw away the previously used DNS cache without properly freeing it. Daniel (8 May 2006) - Dan Fandrich went over the TFTP code and he pointed out and fixed numerous problems: * The received file is corrupted when a packet is lost and retransmitted (this is a serious problem!) * Transmitting a file aborts if a block is lost and retransmitted * Data is stored in the wrong location in the buffer for uploads, so uploads always fail (I don't see how it could have ever worked, but it did on x86 at least) * A number of calls are made to strerror instead of Curl_strerror, making the code not thread safe * There are references to errno instead of Curl_sockerrno(), causing incorrect error messages on Windows * The file name includes a leading / which violates RFC3617. Doing something similar to ftp, where two slashes after the host name means an absolute reference seems a reasonable extension to fix this. * Failures in EBCDIC conversion are not propagated up to the caller but are silently ignored - Fixed known bug #28. The TFTP code no longer assumes a packed struct and thus works reliably on more platforms. Daniel (5 May 2006) - Roland Blom filed bug report #1481217 (http://curl.haxx.se/bug/view.cgi?id=1481217), with follow-ups by Michele Bini and David Byron. libcurl previously wrongly used GetLastError() on windows to get error details after socket-related function calls, when it really should use WSAGetLastError() instead. When changing to this, the former function Curl_ourerrno() is now instead called Curl_sockerrno() as it is necessary to only use it to get errno from socket-related functions as otherwise it won't work as intended on Windows. Daniel (4 May 2006) - Mark Eichin submitted bug report #1480821 (http://curl.haxx.se/bug/view.cgi?id=1480821) He found and identified a problem with how libcurl dealt with GnuTLS and a case where gnutls returned GNUTLS_E_AGAIN indicating it would block. It would then return an unexpected return code, making Curl_ssl_send() confuse the upper layer - causing random 28 bytes trash data to get inserted in the transfered stream. The proper fix was to make the Curl_gtls_send() function return the proper return codes that the callers would expect. The Curl_ossl_send() function already did this. Daniel (2 May 2006) - Added a --checkfor option to curl-config to allow users to easier write for example shell scripts that test for the presence of a new-enough libcurl version. If --checkfor is given a version string newer than what is currently installed, curl-config will return a non-zero exit code and output a string about the unfulfilled requirement. Daniel (26 April 2006) - David McCreedy brought initial line end conversions when doing FTP ASCII transfers. They are done on non-windows systems and translate CRLF to LF. I modified the 15 LIST-using test cases accordingly. The downside is that now we'll have even more trouble to get the tests to run on Windows since they should get CRLF newlines left intact which the *nix versions don't. I figure the only sane thing to do is to add some kind of [newline] macro for the test case files and have them expanded to the proper native line ending when the test cases are run. This is however left to implement. Daniel (25 April 2006) - Paul Querna fixed libcurl to better deal with deflate content encoding when the stream (wrongly) lacks a proper zlib header. This seems to be the case on too many actual server implementations. Daniel (21 April 2006) - Ale Vesely fixed CURLOPT_INTERFACE when using a hostname. Daniel (19 April 2006) - Based on previous info from Tor Arntsen, I made configure detect the Intel ICC compiler to add a compiler option for it, in order for configure to properly be able to detect function prototypes. - Robson Braga Araujo provided a patch that makes libcurl less eager to close the control connection when using FTP, for example when you remove an easy handle from a multi stack. - Applied a patch by Ates Goral and Katie Wang that corrected my bad fix attempt from April 10. Daniel (11 April 2006) - #1468330 (http://curl.haxx.se/bug/view.cgi?id=1468330) pointed out a bad typecast in the curl tool leading to a crash with (64bit?) VS2005 (at least) since the struct timeval field tv_sec is an int while time_t is 64bit. Daniel (10 April 2006) - Ates Goral found out that if you specified both CURLOPT_CONNECTTIMEOUT and CURLOPT_TIMEOUT, the _longer_ time would wrongly be used for the SSL connection time-out! - I merged my hiper patch (http://curl.haxx.se/libcurl/hiper/) into the main sources. See the lib/README.multi_socket for implementation story with details. Don't expect it to work fully yet. I don't intend to blow any whistles or ring any bells about it until I'm more convinced it works at least somewhat reliably. Daniel (7 April 2006) - David McCreedy's EBCDIC and TPF changes. Three new curl_easy_setopt() options (callbacks) were added: CONV_FROM_NETWORK_FUNCTION CONV_TO_NETWORK_FUNCTION CONV_FROM_UTF8_FUNCTION Daniel (5 April 2006) - Michele Bini modified the NTLM code to work for his "weird IIS case" (http://curl.haxx.se/mail/lib-2006-02/0154.html) by adding the NTLM hash function in addition to the LM one and making some other adjustments in the order the different parts of the data block are sent in the Type-2 reply. Inspiration for this work was taken from the Firefox NTLM implementation. I edited the existing 21(!) NTLM test cases to run fine with these news. Due to the fact that we now properly include the host name in the Type-2 message the test cases now only compare parts of that chunk. Daniel (28 March 2006) - #1451929 (http://curl.haxx.se/bug/view.cgi?id=1451929) detailed a bug that occurred when asking libcurl to follow HTTP redirects and the original URL had more than one question mark (?). Added test case 276 to verify. Daniel (27 March 2006) - David Byron found a problem multiple -d options when libcurl was built with --enable-debug, as then curl used free() on memory allocated both with normal malloc() and with libcurl-provided functions, when the latter MUST be freed with curl_free() in debug builds. Daniel (26 March 2006) - Tor Arntsen figured out that TFTP was broken on a lot of systems since we called bind() with a too big argument in the 3rd parameter and at least Tru64, AIX and IRIX seem to be very picky about it. Daniel (21 March 2006) - David McCreedy added CURLINFO_FTP_ENTRY_PATH. - Xavier Bouchoux made the SSL connection non-blocking for the multi interface (when using OpenSSL). - Tor Arntsen fixed the AIX Toolbox RPM spec Daniel (20 March 2006) - David McCreedy fixed libcurl to no longer ignore AUTH failures and now it reacts properly according to the CURLOPT_FTP_SSL setting. - Dan Fandrich fixed two TFTP problems: Fixed a bug whereby a received file whose length was a multiple of 512 bytes could have random garbage appended. Also, stop processing TFTP packets which are too short to be legal. - Ilja van Sprundel reported a possible crash in the curl tool when using "curl hostwithoutslash -d data -G" Version 7.15.3 (20 March 2006) Daniel (20 March 2006) - VULNERABILITY reported to us by Ulf Harnhammar. libcurl uses the given file part of a TFTP URL in a manner that allows a malicious user to overflow a heap-based memory buffer due to the lack of boundary check. This overflow happens if you pass in a URL with a TFTP protocol prefix ("tftp://"), using a valid host and a path part that is longer than 512 bytes. The affected flaw can be triggered by a redirect, if curl/libcurl is told to follow redirects and an HTTP server points the client to a tftp URL with the characteristics described above. The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2006-1061 to this issue. Daniel (16 March 2006) - Tor Arntsen provided a RPM spec file for AIX Toolbox, that now is included in the release archive. Daniel (14 March 2006) - David McCreedy fixed: a bad SSL error message when OpenSSL certificates are verified fine. a missing return code assignment in the FTP code Daniel (7 March 2006) - Markus Koetter filed debian bug report #355715 which identified a problem with the multi interface and multi-part formposts. The fix from February 22nd could make the Curl_done() function get called twice on the same connection and it was not designed for that and thus tried to call free() on an already freed memory area! - Peter Heuchert made sure the CURLFTPSSL_CONTROL setting for CURLOPT_FTP_SSL is used properly. Daniel (6 March 2006) - Lots of users on Windows have reported getting the "SSL: couldn't set callback" error message so I've now made the setting of that callback not be as critical as before. The function is only used for additional loggging/ trace anyway so a failure just means slightly less data. It should still be able to proceed and connect fine to the server. Daniel (4 March 2006) - Thomas Klausner provided a patch written by Todd Vierling in bug report #1442471 that fixes a build problem on Interix. Daniel (2 March 2006) - FTP upload without a file name part in the URL now causes curl_easy_perform() to return CURLE_URL_MALFORMAT. Previously it allowed the upload but named the file "(nil)" (without the quotes). Test case 524 verifies. - Added a check for getprotobyname in configure so that it'll be used, thanks to Gisle Vanem's change the other day. Daniel (28 February 2006) - Dan Fandrich prevented curl from getting stuck in an endless loop in case we are out of file handles very early in curl's code where it makes sure that 0, 1 and 2 aren't gonna be used by the lib for transfers. Daniel (27 February 2006) - Marty Kuhrt pointed out that there were two VMS-specific files missing in the release archive. Version 7.15.2 (27 February 2006) Daniel (22 February 2006) - Lots of work and analysis by "xbx___" in bug #1431750 (http://curl.haxx.se/bug/view.cgi?id=1431750) helped me identify and fix two different but related bugs: 1) Removing an easy handle from a multi handle before the transfer is done could leave a connection in the connection cache for that handle that is in a state that isn't suitable for re-use. A subsequent re-use could then read from a NULL pointer and segfault. 2) When an easy handle was removed from the multi handle, there could be an outstanding c-ares DNS name resolve request. When the response arrived, it caused havoc since the connection struct it "belonged" to could've been freed already. Now Curl_done() is called when an easy handle is removed from a multi handle pre-maturely (that is, before the transfer was complteted). Curl_done() also makes sure to cancel all (if any) outstanding c-ares requests. Daniel (21 February 2006) - Peter Su added support for SOCKS4 proxies. Enable this by setting the proxy type to the already provided type CURLPROXY_SOCKS4. I added a --socks4 option that works like the current --socks5 option but instead use the socks4 protocol. Daniel (20 February 2006) - Shmulik Regev fixed an issue with multi-pass authentication and compressed content when libcurl didn't honor the internal ignorebody flag. Daniel (18 February 2006) - Ulf Härnhammar fixed a format string (printf style) problem in the Negotiate code. It should however not be the cause of any troubles. He also fixed a few similar problems in the HTTP test server code. Daniel (17 February 2006) - Shmulik Regev provided a fix for the DNS cache when using short life times, as previously it could be holding on to old cached entries longer than requested. Daniel (11 February 2006) - Karl Moerder added the CURLOPT_CONNECT_ONLY and CURLINFO_LASTSOCKET options that an app can use to let libcurl only connect to a remote host and then extract the socket from libcurl. libcurl will then not attempt to do any transfer at all after the connect is done. - Kent Boortz improved the configure check for GnuTLS to properly set LIBS instead of LDFLAGS. Daniel (8 February 2006) - Philippe Vaucher provided a brilliant piece of test code that show a problem with re-used FTP connections. If the second request on the same connection was set not to fetch a "body", libcurl could get confused and consider it an attempt to use a dead connection and would go acting mighty strange. Daniel (2 February 2006) - Make --limit-rate [num] mean bytes. It used to be that but it broke in my change done in November 2005. Daniel (30 January 2006) - Added CURLOPT_LOCALPORT and CURLOPT_LOCALPORTRANGE to libcurl. Set with the curl tool with --local-port. Plain and simply set the range of ports to bind the local end of connections to. Implemented on to popular demand. - Based on an error report by Philippe Vaucher, we no longer count a retried connection setup as a follow-redirect. It turns out 1) this fails when a FTP connection is re-setup and 2) it does make the max-redirs counter behave wrong. Daniel (24 January 2006) - Michal Marek provided a patch for FTP that makes libcurl continue to try PASV even after EPSV returned a positive response code, if libcurl failed to connect to the port number the EPSV response said. Obviously some people are going through protocol-sensitive firewalls (or similar) that don't understand EPSV and then they don't allow the second connection unless PASV was used. This also called for a minor fix of test case 238. Daniel (20 January 2006) - Duane Cathey was one of our friends who reported that curl -P [IP] (CURLOPT_FTPPORT) didn't work for ipv6-enabed curls if the IP wasn't a "native" IP while it works fine for ipv6-disabled builds! In the process of fixing this, I removed the support for LPRT since I can't think of many reasons to keep doing it and asking on the mailing list didn't reveal anyone else that could either. The code that sends EPRT and PORT is now also a lot simpler than before (IMHO). Daniel (19 January 2006) - Jon Turner pointed out that doing -P [hostname] (CURLOPT_FTPPORT) with curl (built ipv4-only) didn't work. Daniel (18 January 2006) - As reported in bug #1408742 (http://curl.haxx.se/bug/view.cgi?id=1408742), the configure script complained about a missing "missing" script if you ran configure within a path whose name included one or more spaces. This is due to a flaw in automake (1.9.6 and earlier). I've now worked around it by including an "overloaded" version of the AM_MISSING_HAS_RUN script that'll be used instead of the one automake ships with. This kludge needs to be removed once we get an automake version with this problem corrected. Possibly we'll then need to convert this into a kludge depending on what automake version that is used and that is gonna be painful and I don't even want to think about that now...! Daniel (17 January 2006) - David Shaw: Here is the latest libcurl.m4 autoconf tests. It is updated with the latest features and protocols that libcurl supports and has a minor fix to better deal with the obscure case where someone has more than one libcurl installed at the same time. Daniel (16 January 2006) - David Shaw finally removed all traces of Gopher and we are now officially not supporting it. It hasn't been functioning for years anyway, so this is just finally stating what already was true. And a cleanup at the same time. - Bryan Henderson turned the 'initialized' variable for curl_global_init() into a counter, and thus you can now do multiple curl_global_init() and you are then supposed to do the same amount of calls to curl_global_cleanup(). Bryan has also updated the docs accordingly. Daniel (13 January 2006) - Andrew Benham fixed a race condition in the test suite that could cause the test script to kill all processes in the current process group! Daniel (12 January 2006) - Michael Jahn: Fixed FTP_SKIP_PASV_IP and FTP_USE_EPSV to "do right" when used on FTP thru HTTP proxy. Fixed PROXYTUNNEL to work fine when you do ftp through a proxy. It would previously overwrite internal memory and cause unpredicted behaviour! Daniel (11 January 2006) - I decided to document the "secret option" here now, as I've received *NO* feedback at all on my mailing list requests from November 2005: I'm looking for feedback and comments. I added some experimental code the other day, that allows a libcurl user to select what method libcurl should use to reach a file on a FTP(S) server. This functionality is available in CVS code and in recent daily snapshots. Let me explain... The current name for the option is CURLOPT_FTP_FILEMETHOD (--ftp-method for the command line tool) and you set it to a long (there are currenly no defines for the argument values, just plain numericals). You can set three different "methods" that do this: 1 multicwd - like today, curl will do a single CWD operation for each path part in the given URL. For deep hierarchies this means very many commands. This is how RFC1738 says it should be done. This is the default. 2 nocwd - no CWD at all is done, curl will do SIZE, RETR, STOR etc and give a full path to the server. 3 singlecwd - make one CWD with the full target directory and then operate on the file "normally". (With the command line tool you do --ftp-method [METHOD], where [METHOD] is one of "multicwd", "nocwd" or "singlecwd".) What feedback I'm interested in: 1 - Do they work at all? Do you find servers where one of these don't work? 2 - What would proper names for the option and its arguments be, if we consider this feature good enough to get included and documented in upcoming releases? 3 - Should we make libcurl able to "walk through" these options in case of (path related) failures, or should it fail and let the user redo any possible retries? (This option is not documented in any man page just yet since I'm not sure these names will be used or if the functionality will end up exactly like this. And for the same reasons we have no test cases for these yet.) Daniel (10 January 2006) - When using a bad path over FTP, as in when libcurl couldn't CWD into all given subdirs, libcurl would still "remember" the full path as if it is the current directory libcurl is in so that the next curl_easy_perform() would get really confused if it tried the same path again - as it would not issue any CWD commands at all, assuming it is already in the "proper" dir. Starting now, a failed CWD command sets a flag that prevents the path to be "remembered" after returning. Daniel (7 January 2006) - Michael Jahn fixed so that the second CONNECT when doing FTP over a HTTP proxy actually used a new connection and not sent the second request on the first socket! Daniel (6 January 2006) - Alexander Lazic made the buildconf run the buildconf in the ares dir if that is present instead of trying to mimic that script in curl's buildconf script. Daniel (3 January 2006) - Andres Garcia made the TFTP test server build with mingw.