[apt.git] / methods / https.cc

//-*- mode: cpp; mode: fold -*-
// Description								/*{{{*/
// $Id: http.cc,v 1.59 2004/05/08 19:42:35 mdz Exp $
/* ######################################################################

   HTTPS Acquire Method - This is the HTTPS aquire method for APT.
   
   It uses libcurl

   ##################################################################### */
									/*}}}*/
// Include Files							/*{{{*/
#include <config.h>

#include <apt-pkg/fileutl.h>
#include <apt-pkg/acquire-method.h>
#include <apt-pkg/error.h>
#include <apt-pkg/hashes.h>
#include <apt-pkg/netrc.h>
#include <apt-pkg/configuration.h>

#include <sys/stat.h>
#include <sys/time.h>
#include <unistd.h>
#include <signal.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <iostream>
#include <sstream>

#include "config.h"
#include "https.h"
#include <apti18n.h>
									/*}}}*/
using namespace std;

size_t
HttpsMethod::parse_header(void *buffer, size_t size, size_t nmemb, void *userp)
{
   size_t len = size * nmemb;
   HttpsMethod *me = (HttpsMethod *)userp;
   std::string line((char*) buffer, len);
   for (--len; len > 0; --len)
      if (isspace(line[len]) == 0)
      {
	 ++len;
	 break;
      }
   line.erase(len);

   if (line.empty() == true)
   {
      if (me->Server->Result != 416 && me->Server->StartPos != 0)
	 ;
      else if (me->Server->Result == 416 && me->Server->Size == me->File->FileSize())
      {
         me->Server->Result = 200;
	 me->Server->StartPos = me->Server->Size;
      }
      else
	 me->Server->StartPos = 0;

      me->File->Truncate(me->Server->StartPos);
      me->File->Seek(me->Server->StartPos);
   }
   else if (me->Server->HeaderLine(line) == false)
      return 0;

   return size*nmemb;
}

size_t 
HttpsMethod::write_data(void *buffer, size_t size, size_t nmemb, void *userp)
{
   HttpsMethod *me = (HttpsMethod *)userp;

   if(me->File->Write(buffer, size*nmemb) != true)
      return false;

   return size*nmemb;
}

int 
HttpsMethod::progress_callback(void *clientp, double dltotal, double dlnow, 
			      double ultotal, double ulnow)
{
   HttpsMethod *me = (HttpsMethod *)clientp;
   if(dltotal > 0 && me->Res.Size == 0) {
      me->Res.Size = (unsigned long long)dltotal;
      me->URIStart(me->Res);
   }
   return 0;
}

// HttpsServerState::HttpsServerState - Constructor			/*{{{*/
HttpsServerState::HttpsServerState(URI Srv,HttpsMethod *Owner) : ServerState(Srv, NULL)
{
   TimeOut = _config->FindI("Acquire::https::Timeout",TimeOut);
   Reset();
}
									/*}}}*/

void HttpsMethod::SetupProxy()  					/*{{{*/
{
   URI ServerName = Queue->Uri;

   // Curl should never read proxy settings from the environment, as
   // we determine which proxy to use.  Do this for consistency among
   // methods and prevent an environment variable overriding a
   // no-proxy ("DIRECT") setting in apt.conf.
   curl_easy_setopt(curl, CURLOPT_PROXY, "");

   // Determine the proxy setting - try https first, fallback to http and use env at last
   string UseProxy = _config->Find("Acquire::https::Proxy::" + ServerName.Host,
				   _config->Find("Acquire::http::Proxy::" + ServerName.Host).c_str());

   if (UseProxy.empty() == true)
      UseProxy = _config->Find("Acquire::https::Proxy", _config->Find("Acquire::http::Proxy").c_str());

   // User want to use NO proxy, so nothing to setup
   if (UseProxy == "DIRECT")
      return;

   if (UseProxy.empty() == false) 
   {
      // Parse no_proxy, a comma (,) separated list of domains we don't want to use
      // a proxy for so we stop right here if it is in the list
      if (getenv("no_proxy") != 0 && CheckDomainList(ServerName.Host,getenv("no_proxy")) == true)
	 return;
   } else {
      const char* result = getenv("https_proxy");
      // FIXME: Fall back to http_proxy is to remain compatible with
      // existing setups and behaviour of apt.conf.  This should be
      // deprecated in the future (including apt.conf).  Most other
      // programs do not fall back to http proxy settings and neither
      // should Apt.
      if (result == NULL)
         result = getenv("http_proxy");
      UseProxy = result == NULL ? "" : result;
   }

   // Determine what host and port to use based on the proxy settings
   if (UseProxy.empty() == false) 
   {
      Proxy = UseProxy;
      if (Proxy.Port != 1)
	 curl_easy_setopt(curl, CURLOPT_PROXYPORT, Proxy.Port);
      curl_easy_setopt(curl, CURLOPT_PROXY, Proxy.Host.c_str());
      if (Proxy.User.empty() == false || Proxy.Password.empty() == false)
      {
         curl_easy_setopt(curl, CURLOPT_PROXYUSERNAME, Proxy.User.c_str());
         curl_easy_setopt(curl, CURLOPT_PROXYPASSWORD, Proxy.Password.c_str());
      }
   }
}									/*}}}*/
// HttpsMethod::Fetch - Fetch an item					/*{{{*/
// ---------------------------------------------------------------------
/* This adds an item to the pipeline. We keep the pipeline at a fixed
   depth. */
bool HttpsMethod::Fetch(FetchItem *Itm)
{
   struct stat SBuf;
   struct curl_slist *headers=NULL;  
   char curl_errorstr[CURL_ERROR_SIZE];
   URI Uri = Itm->Uri;
   string remotehost = Uri.Host;

   // TODO:
   //       - http::Pipeline-Depth
   //       - error checking/reporting
   //       - more debug options? (CURLOPT_DEBUGFUNCTION?)

   curl_easy_reset(curl);
   SetupProxy();

   maybe_add_auth (Uri, _config->FindFile("Dir::Etc::netrc"));

   // callbacks
   curl_easy_setopt(curl, CURLOPT_URL, static_cast<string>(Uri).c_str());
   curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, parse_header);
   curl_easy_setopt(curl, CURLOPT_WRITEHEADER, this);
   curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);
   curl_easy_setopt(curl, CURLOPT_WRITEDATA, this);
   curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, progress_callback);
   curl_easy_setopt(curl, CURLOPT_PROGRESSDATA, this);
   curl_easy_setopt(curl, CURLOPT_NOPROGRESS, false);
   curl_easy_setopt(curl, CURLOPT_FILETIME, true);

   // SSL parameters are set by default to the common (non mirror-specific) value
   // if available (or a default one) and gets overload by mirror-specific ones.

   // File containing the list of trusted CA.
   string cainfo = _config->Find("Acquire::https::CaInfo","");
   string knob = "Acquire::https::"+remotehost+"::CaInfo";
   cainfo = _config->Find(knob.c_str(),cainfo.c_str());
   if(cainfo.empty() == false)
      curl_easy_setopt(curl, CURLOPT_CAINFO,cainfo.c_str());

   // Check server certificate against previous CA list ...
   bool peer_verify = _config->FindB("Acquire::https::Verify-Peer",true);
   knob = "Acquire::https::" + remotehost + "::Verify-Peer";
   peer_verify = _config->FindB(knob.c_str(), peer_verify);
   curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, peer_verify);

   // ... and hostname against cert CN or subjectAltName
   bool verify = _config->FindB("Acquire::https::Verify-Host",true);
   knob = "Acquire::https::"+remotehost+"::Verify-Host";
   verify = _config->FindB(knob.c_str(),verify);
   int const default_verify = (verify == true) ? 2 : 0;
   curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, default_verify);

   // Also enforce issuer of server certificate using its cert
   string issuercert = _config->Find("Acquire::https::IssuerCert","");
   knob = "Acquire::https::"+remotehost+"::IssuerCert";
   issuercert = _config->Find(knob.c_str(),issuercert.c_str());
   if(issuercert.empty() == false)
      curl_easy_setopt(curl, CURLOPT_ISSUERCERT,issuercert.c_str());

   // For client authentication, certificate file ...
   string pem = _config->Find("Acquire::https::SslCert","");
   knob = "Acquire::https::"+remotehost+"::SslCert";
   pem = _config->Find(knob.c_str(),pem.c_str());
   if(pem.empty() == false)
      curl_easy_setopt(curl, CURLOPT_SSLCERT, pem.c_str());

   // ... and associated key.
   string key = _config->Find("Acquire::https::SslKey","");
   knob = "Acquire::https::"+remotehost+"::SslKey";
   key = _config->Find(knob.c_str(),key.c_str());
   if(key.empty() == false)
      curl_easy_setopt(curl, CURLOPT_SSLKEY, key.c_str());

   // Allow forcing SSL version to SSLv3 or TLSv1 (SSLv2 is not
   // supported by GnuTLS).
   long final_version = CURL_SSLVERSION_DEFAULT;
   string sslversion = _config->Find("Acquire::https::SslForceVersion","");
   knob = "Acquire::https::"+remotehost+"::SslForceVersion";
   sslversion = _config->Find(knob.c_str(),sslversion.c_str());
   if(sslversion == "TLSv1")
     final_version = CURL_SSLVERSION_TLSv1;
   else if(sslversion == "SSLv3")
     final_version = CURL_SSLVERSION_SSLv3;
   curl_easy_setopt(curl, CURLOPT_SSLVERSION, final_version);

   // CRL file
   string crlfile = _config->Find("Acquire::https::CrlFile","");
   knob = "Acquire::https::"+remotehost+"::CrlFile";
   crlfile = _config->Find(knob.c_str(),crlfile.c_str());
   if(crlfile.empty() == false)
      curl_easy_setopt(curl, CURLOPT_CRLFILE, crlfile.c_str());

   // cache-control
   if(_config->FindB("Acquire::https::No-Cache",
	_config->FindB("Acquire::http::No-Cache",false)) == false)
   {
      // cache enabled
      if (_config->FindB("Acquire::https::No-Store",
		_config->FindB("Acquire::http::No-Store",false)) == true)
	 headers = curl_slist_append(headers,"Cache-Control: no-store");
      stringstream ss;
      ioprintf(ss, "Cache-Control: max-age=%u", _config->FindI("Acquire::https::Max-Age",
		_config->FindI("Acquire::http::Max-Age",0)));
      headers = curl_slist_append(headers, ss.str().c_str());
   } else {
      // cache disabled by user
      headers = curl_slist_append(headers, "Cache-Control: no-cache");
      headers = curl_slist_append(headers, "Pragma: no-cache");
   }
   curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);

   // speed limit
   int const dlLimit = _config->FindI("Acquire::https::Dl-Limit",
		_config->FindI("Acquire::http::Dl-Limit",0))*1024;
   if (dlLimit > 0)
      curl_easy_setopt(curl, CURLOPT_MAX_RECV_SPEED_LARGE, dlLimit);

   // set header
   curl_easy_setopt(curl, CURLOPT_USERAGENT,
	_config->Find("Acquire::https::User-Agent",
		_config->Find("Acquire::http::User-Agent",
			"Debian APT-CURL/1.0 (" PACKAGE_VERSION ")").c_str()).c_str());

   // set timeout
   int const timeout = _config->FindI("Acquire::https::Timeout",
		_config->FindI("Acquire::http::Timeout",120));
   curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, timeout);
   //set really low lowspeed timeout (see #497983)
   curl_easy_setopt(curl, CURLOPT_LOW_SPEED_LIMIT, DL_MIN_SPEED);
   curl_easy_setopt(curl, CURLOPT_LOW_SPEED_TIME, timeout);

   // set redirect options and default to 10 redirects
   bool const AllowRedirect = _config->FindB("Acquire::https::AllowRedirect",
	_config->FindB("Acquire::http::AllowRedirect",true));
   curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, AllowRedirect);
   curl_easy_setopt(curl, CURLOPT_MAXREDIRS, 10);

   // debug
   if(_config->FindB("Debug::Acquire::https", false))
      curl_easy_setopt(curl, CURLOPT_VERBOSE, true);

   // error handling
   curl_errorstr[0] = '\0';
   curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, curl_errorstr);

   // If we ask for uncompressed files servers might respond with content-
   // negotation which lets us end up with compressed files we do not support,
   // see 657029, 657560 and co, so if we have no extension on the request
   // ask for text only. As a sidenote: If there is nothing to negotate servers
   // seem to be nice and ignore it.
   if (_config->FindB("Acquire::https::SendAccept", _config->FindB("Acquire::http::SendAccept", true)) == true)
   {
      size_t const filepos = Itm->Uri.find_last_of('/');
      string const file = Itm->Uri.substr(filepos + 1);
      if (flExtension(file) == file)
	 headers = curl_slist_append(headers, "Accept: text/*");
   }

   // if we have the file send an if-range query with a range header
   if (stat(Itm->DestFile.c_str(),&SBuf) >= 0 && SBuf.st_size > 0)
   {
      char Buf[1000];
      sprintf(Buf, "Range: bytes=%li-", (long) SBuf.st_size);
      headers = curl_slist_append(headers, Buf);
      sprintf(Buf, "If-Range: %s", TimeRFC1123(SBuf.st_mtime).c_str());
      headers = curl_slist_append(headers, Buf);
   }
   else if(Itm->LastModified > 0)
   {
      curl_easy_setopt(curl, CURLOPT_TIMECONDITION, CURL_TIMECOND_IFMODSINCE);
      curl_easy_setopt(curl, CURLOPT_TIMEVALUE, Itm->LastModified);
   }

   // go for it - if the file exists, append on it
   File = new FileFd(Itm->DestFile, FileFd::WriteAny);
   Server = new HttpsServerState(Itm->Uri, this);

   // keep apt updated
   Res.Filename = Itm->DestFile;

   // get it!
   CURLcode success = curl_easy_perform(curl);

   // If the server returns 200 OK but the If-Modified-Since condition is not
   // met, CURLINFO_CONDITION_UNMET will be set to 1
   long curl_condition_unmet = 0;
   curl_easy_getinfo(curl, CURLINFO_CONDITION_UNMET, &curl_condition_unmet);

   File->Close();
   curl_slist_free_all(headers);

   // cleanup
   if (success != 0)
   {
      _error->Error("%s", curl_errorstr);
      unlink(File->Name().c_str());
      return false;
   }

   // server says file not modified
   if (Server->Result == 304 || curl_condition_unmet == 1)
   {
      unlink(File->Name().c_str());
      Res.IMSHit = true;
      Res.LastModified = Itm->LastModified;
      Res.Size = 0;
      URIDone(Res);
      return true;
   }
   Res.IMSHit = false;

   if (Server->Result != 200 && // OK
	 Server->Result != 206 && // Partial
	 Server->Result != 416) // invalid Range
   {
      char err[255];
      snprintf(err, sizeof(err) - 1, "HttpError%i", Server->Result);
      SetFailReason(err);
      _error->Error("%s", err);
      // unlink, no need keep 401/404 page content in partial/
      unlink(File->Name().c_str());
      return false;
   }

   struct stat resultStat;
   if (unlikely(stat(File->Name().c_str(), &resultStat) != 0))
   {
      _error->Errno("stat", "Unable to access file %s", File->Name().c_str());
      return false;
   }
   Res.Size = resultStat.st_size;

   // invalid range-request
   if (Server->Result == 416)
   {
      unlink(File->Name().c_str());
      Res.Size = 0;
      delete File;
      Redirect(Itm->Uri);
      return true;
   }

   // Timestamp
   curl_easy_getinfo(curl, CURLINFO_FILETIME, &Res.LastModified);
   if (Res.LastModified != -1)
   {
      struct timespec times[2];
      times[0].tv_sec = Res.LastModified;
      times[1].tv_sec = Res.LastModified;
      times[0].tv_nsec = times[1].tv_nsec = 0;
      futimens(File->Fd(), times);
   }
   else
      Res.LastModified = resultStat.st_mtime;

   // take hashes
   Hashes Hash;
   FileFd Fd(Res.Filename, FileFd::ReadOnly);
   Hash.AddFD(Fd);
   Res.TakeHashes(Hash);

   // keep apt updated
   URIDone(Res);

   // cleanup
   Res.Size = 0;
   delete File;

   return true;
};

int main()
{
   setlocale(LC_ALL, "");

   HttpsMethod Mth;
   curl_global_init(CURL_GLOBAL_SSL) ;

   return Mth.Run();
}
Commit	Line	Data
b9e9a44b	1	//-- mode: cpp; mode: fold --
d546f98d MV	2	// Description /{{{/
	3	// $Id: http.cc,v 1.59 2004/05/08 19:42:35 mdz Exp $
	4	/* ######################################################################
	5
ae58a985	6	HTTPS Acquire Method - This is the HTTPS aquire method for APT.
d546f98d MV	7
	8	It uses libcurl
	9
	10	##################################################################### */
	11	/}}}/
	12	// Include Files /{{{/
ea542140 DK	13	#include <config.h>
ea542140 DK	14
d546f98d MV	15	#include <apt-pkg/fileutl.h>
	16	#include <apt-pkg/acquire-method.h>
	17	#include <apt-pkg/error.h>
	18	#include <apt-pkg/hashes.h>
592b7800	19	#include <apt-pkg/netrc.h>
472ff00e	20	#include <apt-pkg/configuration.h>
d546f98d MV	21
	22	#include <sys/stat.h>
	23	#include <sys/time.h>
d546f98d MV	24	#include <unistd.h>
	25	#include <signal.h>
	26	#include <stdio.h>
	27	#include <errno.h>
	28	#include <string.h>
	29	#include <iostream>
d546f98d MV	30	#include <sstream>
	31
	32	#include "config.h"
	33	#include "https.h"
ea542140	34	#include <apti18n.h>
d546f98d MV	35	/}}}/
	36	using namespace std;
	37
fd46d305 DK	38	size_t
	39	HttpsMethod::parse_header(void buffer, size_t size, size_t nmemb, void userp)
	40	{
	41	size_t len = size * nmemb;
	42	HttpsMethod me = (HttpsMethod )userp;
	43	std::string line((char*) buffer, len);
	44	for (--len; len > 0; --len)
	45	if (isspace(line[len]) == 0)
	46	{
	47	++len;
	48	break;
	49	}
	50	line.erase(len);
	51
	52	if (line.empty() == true)
	53	{
	54	if (me->Server->Result != 416 && me->Server->StartPos != 0)
	55	;
	56	else if (me->Server->Result == 416 && me->Server->Size == me->File->FileSize())
	57	{
	58	me->Server->Result = 200;
	59	me->Server->StartPos = me->Server->Size;
	60	}
	61	else
	62	me->Server->StartPos = 0;
	63
	64	me->File->Truncate(me->Server->StartPos);
	65	me->File->Seek(me->Server->StartPos);
	66	}
	67	else if (me->Server->HeaderLine(line) == false)
	68	return 0;
	69
	70	return size*nmemb;
	71	}
	72
d546f98d MV	73	size_t
	74	HttpsMethod::write_data(void buffer, size_t size, size_t nmemb, void userp)
	75	{
	76	HttpsMethod me = (HttpsMethod )userp;
	77
	78	if(me->File->Write(buffer, size*nmemb) != true)
	79	return false;
	80
	81	return size*nmemb;
	82	}
	83
	84	int
	85	HttpsMethod::progress_callback(void *clientp, double dltotal, double dlnow,
	86	double ultotal, double ulnow)
	87	{
	88	HttpsMethod me = (HttpsMethod )clientp;
	89	if(dltotal > 0 && me->Res.Size == 0) {
650faab0	90	me->Res.Size = (unsigned long long)dltotal;
d546f98d MV	91	me->URIStart(me->Res);
	92	}
	93	return 0;
	94	}
	95
fd46d305 DK	96	// HttpsServerState::HttpsServerState - Constructor /{{{/
	97	HttpsServerState::HttpsServerState(URI Srv,HttpsMethod *Owner) : ServerState(Srv, NULL)
	98	{
	99	TimeOut = _config->FindI("Acquire::https::Timeout",TimeOut);
	100	Reset();
	101	}
	102	/}}}/
	103
4407a02f	104	void HttpsMethod::SetupProxy() /{{{/
d546f98d MV	105	{
	106	URI ServerName = Queue->Uri;
	107
5b63d2a9 MV	108	// Curl should never read proxy settings from the environment, as
	109	// we determine which proxy to use. Do this for consistency among
	110	// methods and prevent an environment variable overriding a
	111	// no-proxy ("DIRECT") setting in apt.conf.
	112	curl_easy_setopt(curl, CURLOPT_PROXY, "");
	113
4407a02f MV	114	// Determine the proxy setting - try https first, fallback to http and use env at last
	115	string UseProxy = _config->Find("Acquire::https::Proxy::" + ServerName.Host,
	116	_config->Find("Acquire::http::Proxy::" + ServerName.Host).c_str());
	117
	118	if (UseProxy.empty() == true)
	119	UseProxy = _config->Find("Acquire::https::Proxy", _config->Find("Acquire::http::Proxy").c_str());
	120
	121	// User want to use NO proxy, so nothing to setup
	122	if (UseProxy == "DIRECT")
	123	return;
	124
	125	if (UseProxy.empty() == false)
d546f98d	126	{
4407a02f MV	127	// Parse no_proxy, a comma (,) separated list of domains we don't want to use
	128	// a proxy for so we stop right here if it is in the list
	129	if (getenv("no_proxy") != 0 && CheckDomainList(ServerName.Host,getenv("no_proxy")) == true)
	130	return;
	131	} else {
5b63d2a9 MV	132	const char* result = getenv("https_proxy");
	133	// FIXME: Fall back to http_proxy is to remain compatible with
	134	// existing setups and behaviour of apt.conf. This should be
	135	// deprecated in the future (including apt.conf). Most other
	136	// programs do not fall back to http proxy settings and neither
	137	// should Apt.
	138	if (result == NULL)
	139	result = getenv("http_proxy");
4407a02f	140	UseProxy = result == NULL ? "" : result;
d546f98d	141	}
4407a02f	142
d546f98d	143	// Determine what host and port to use based on the proxy settings
4407a02f	144	if (UseProxy.empty() == false)
d546f98d	145	{
4407a02f MV	146	Proxy = UseProxy;
4407a02f MV	147	if (Proxy.Port != 1)
d546f98d MV	148	curl_easy_setopt(curl, CURLOPT_PROXYPORT, Proxy.Port);
d546f98d MV	149	curl_easy_setopt(curl, CURLOPT_PROXY, Proxy.Host.c_str());
5b63d2a9 MV	150	if (Proxy.User.empty() == false \|\| Proxy.Password.empty() == false)
	151	{
	152	curl_easy_setopt(curl, CURLOPT_PROXYUSERNAME, Proxy.User.c_str());
	153	curl_easy_setopt(curl, CURLOPT_PROXYPASSWORD, Proxy.Password.c_str());
	154	}
d546f98d	155	}
b9e9a44b	156	} /}}}/
d546f98d MV	157	// HttpsMethod::Fetch - Fetch an item /{{{/
	158	// ---------------------------------------------------------------------
	159	/* This adds an item to the pipeline. We keep the pipeline at a fixed
	160	depth. */
	161	bool HttpsMethod::Fetch(FetchItem *Itm)
	162	{
d546f98d MV	163	struct stat SBuf;
d546f98d MV	164	struct curl_slist *headers=NULL;
714ee06c	165	char curl_errorstr[CURL_ERROR_SIZE];
c769cd6f MV	166	URI Uri = Itm->Uri;
c769cd6f MV	167	string remotehost = Uri.Host;
d546f98d MV	168
d546f98d MV	169	// TODO:
d546f98d MV	170	// - http::Pipeline-Depth
	171	// - error checking/reporting
	172	// - more debug options? (CURLOPT_DEBUGFUNCTION?)
	173
5820530d	174	curl_easy_reset(curl);
d546f98d MV	175	SetupProxy();
d546f98d MV	176
1de1f703	177	maybe_add_auth (Uri, _config->FindFile("Dir::Etc::netrc"));
592b7800	178
d546f98d	179	// callbacks
01fc8930	180	curl_easy_setopt(curl, CURLOPT_URL, static_cast<string>(Uri).c_str());
fd46d305 DK	181	curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, parse_header);
fd46d305 DK	182	curl_easy_setopt(curl, CURLOPT_WRITEHEADER, this);
d546f98d MV	183	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);
	184	curl_easy_setopt(curl, CURLOPT_WRITEDATA, this);
	185	curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, progress_callback);
	186	curl_easy_setopt(curl, CURLOPT_PROGRESSDATA, this);
	187	curl_easy_setopt(curl, CURLOPT_NOPROGRESS, false);
5820530d	188	curl_easy_setopt(curl, CURLOPT_FILETIME, true);
d546f98d	189
c769cd6f MV	190	// SSL parameters are set by default to the common (non mirror-specific) value
	191	// if available (or a default one) and gets overload by mirror-specific ones.
	192
	193	// File containing the list of trusted CA.
	194	string cainfo = _config->Find("Acquire::https::CaInfo","");
	195	string knob = "Acquire::https::"+remotehost+"::CaInfo";
	196	cainfo = _config->Find(knob.c_str(),cainfo.c_str());
46e39c8e	197	if(cainfo.empty() == false)
c769cd6f MV	198	curl_easy_setopt(curl, CURLOPT_CAINFO,cainfo.c_str());
	199
	200	// Check server certificate against previous CA list ...
	201	bool peer_verify = _config->FindB("Acquire::https::Verify-Peer",true);
	202	knob = "Acquire::https::" + remotehost + "::Verify-Peer";
	203	peer_verify = _config->FindB(knob.c_str(), peer_verify);
714ee06c MV	204	curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, peer_verify);
714ee06c MV	205
c769cd6f	206	// ... and hostname against cert CN or subjectAltName
c769cd6f MV	207	bool verify = _config->FindB("Acquire::https::Verify-Host",true);
	208	knob = "Acquire::https::"+remotehost+"::Verify-Host";
	209	verify = _config->FindB(knob.c_str(),verify);
52b22cea DK	210	int const default_verify = (verify == true) ? 2 : 0;
52b22cea DK	211	curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, default_verify);
c769cd6f	212
46e39c8e MV	213	// Also enforce issuer of server certificate using its cert
	214	string issuercert = _config->Find("Acquire::https::IssuerCert","");
	215	knob = "Acquire::https::"+remotehost+"::IssuerCert";
	216	issuercert = _config->Find(knob.c_str(),issuercert.c_str());
	217	if(issuercert.empty() == false)
	218	curl_easy_setopt(curl, CURLOPT_ISSUERCERT,issuercert.c_str());
	219
c769cd6f	220	// For client authentication, certificate file ...
714ee06c	221	string pem = _config->Find("Acquire::https::SslCert","");
c769cd6f MV	222	knob = "Acquire::https::"+remotehost+"::SslCert";
c769cd6f MV	223	pem = _config->Find(knob.c_str(),pem.c_str());
46e39c8e	224	if(pem.empty() == false)
714ee06c	225	curl_easy_setopt(curl, CURLOPT_SSLCERT, pem.c_str());
c769cd6f MV	226
	227	// ... and associated key.
	228	string key = _config->Find("Acquire::https::SslKey","");
	229	knob = "Acquire::https::"+remotehost+"::SslKey";
	230	key = _config->Find(knob.c_str(),key.c_str());
46e39c8e	231	if(key.empty() == false)
c769cd6f MV	232	curl_easy_setopt(curl, CURLOPT_SSLKEY, key.c_str());
	233
	234	// Allow forcing SSL version to SSLv3 or TLSv1 (SSLv2 is not
	235	// supported by GnuTLS).
	236	long final_version = CURL_SSLVERSION_DEFAULT;
	237	string sslversion = _config->Find("Acquire::https::SslForceVersion","");
	238	knob = "Acquire::https::"+remotehost+"::SslForceVersion";
	239	sslversion = _config->Find(knob.c_str(),sslversion.c_str());
	240	if(sslversion == "TLSv1")
	241	final_version = CURL_SSLVERSION_TLSv1;
	242	else if(sslversion == "SSLv3")
	243	final_version = CURL_SSLVERSION_SSLv3;
	244	curl_easy_setopt(curl, CURLOPT_SSLVERSION, final_version);
d546f98d	245
46e39c8e MV	246	// CRL file
	247	string crlfile = _config->Find("Acquire::https::CrlFile","");
	248	knob = "Acquire::https::"+remotehost+"::CrlFile";
	249	crlfile = _config->Find(knob.c_str(),crlfile.c_str());
	250	if(crlfile.empty() == false)
	251	curl_easy_setopt(curl, CURLOPT_CRLFILE, crlfile.c_str());
	252
d546f98d	253	// cache-control
b9e9a44b DK	254	if(_config->FindB("Acquire::https::No-Cache",
b9e9a44b DK	255	_config->FindB("Acquire::http::No-Cache",false)) == false)
d546f98d MV	256	{
d546f98d MV	257	// cache enabled
b9e9a44b DK	258	if (_config->FindB("Acquire::https::No-Store",
b9e9a44b DK	259	_config->FindB("Acquire::http::No-Store",false)) == true)
d546f98d	260	headers = curl_slist_append(headers,"Cache-Control: no-store");
8654fae9	261	stringstream ss;
b9e9a44b DK	262	ioprintf(ss, "Cache-Control: max-age=%u", _config->FindI("Acquire::https::Max-Age",
b9e9a44b DK	263	_config->FindI("Acquire::http::Max-Age",0)));
d546f98d MV	264	headers = curl_slist_append(headers, ss.str().c_str());
	265	} else {
	266	// cache disabled by user
	267	headers = curl_slist_append(headers, "Cache-Control: no-cache");
	268	headers = curl_slist_append(headers, "Pragma: no-cache");
	269	}
	270	curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
	271
d546f98d	272	// speed limit
46e39c8e	273	int const dlLimit = _config->FindI("Acquire::https::Dl-Limit",
b9e9a44b	274	_config->FindI("Acquire::http::Dl-Limit",0))*1024;
d546f98d MV	275	if (dlLimit > 0)
	276	curl_easy_setopt(curl, CURLOPT_MAX_RECV_SPEED_LARGE, dlLimit);
	277
	278	// set header
9f542bae DK	279	curl_easy_setopt(curl, CURLOPT_USERAGENT,
	280	_config->Find("Acquire::https::User-Agent",
	281	_config->Find("Acquire::http::User-Agent",
335e2c82	282	"Debian APT-CURL/1.0 (" PACKAGE_VERSION ")").c_str()).c_str());
d546f98d	283
cc615257	284	// set timeout
46e39c8e	285	int const timeout = _config->FindI("Acquire::https::Timeout",
b9e9a44b	286	_config->FindI("Acquire::http::Timeout",120));
cc615257	287	curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, timeout);
43cf55db	288	//set really low lowspeed timeout (see #497983)
5085e660	289	curl_easy_setopt(curl, CURLOPT_LOW_SPEED_LIMIT, DL_MIN_SPEED);
43cf55db	290	curl_easy_setopt(curl, CURLOPT_LOW_SPEED_TIME, timeout);
cc615257	291
668ce84d	292	// set redirect options and default to 10 redirects
46e39c8e	293	bool const AllowRedirect = _config->FindB("Acquire::https::AllowRedirect",
b9e9a44b	294	_config->FindB("Acquire::http::AllowRedirect",true));
668ce84d MV	295	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, AllowRedirect);
	296	curl_easy_setopt(curl, CURLOPT_MAXREDIRS, 10);
	297
d546f98d	298	// debug
714ee06c	299	if(_config->FindB("Debug::Acquire::https", false))
d546f98d MV	300	curl_easy_setopt(curl, CURLOPT_VERBOSE, true);
d546f98d MV	301
714ee06c	302	// error handling
cc418115	303	curl_errorstr[0] = '\0';
714ee06c MV	304	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, curl_errorstr);
714ee06c MV	305
6f4501f9 DK	306	// If we ask for uncompressed files servers might respond with content-
	307	// negotation which lets us end up with compressed files we do not support,
	308	// see 657029, 657560 and co, so if we have no extension on the request
	309	// ask for text only. As a sidenote: If there is nothing to negotate servers
	310	// seem to be nice and ignore it.
	311	if (_config->FindB("Acquire::https::SendAccept", _config->FindB("Acquire::http::SendAccept", true)) == true)
	312	{
	313	size_t const filepos = Itm->Uri.find_last_of('/');
	314	string const file = Itm->Uri.substr(filepos + 1);
	315	if (flExtension(file) == file)
	316	headers = curl_slist_append(headers, "Accept: text/*");
	317	}
	318
d6039f9e	319	// if we have the file send an if-range query with a range header
4c499611 MV	320	if (stat(Itm->DestFile.c_str(),&SBuf) >= 0 && SBuf.st_size > 0)
	321	{
	322	char Buf[1000];
85050e76	323	sprintf(Buf, "Range: bytes=%li-", (long) SBuf.st_size);
4c499611	324	headers = curl_slist_append(headers, Buf);
8654fae9 DK	325	sprintf(Buf, "If-Range: %s", TimeRFC1123(SBuf.st_mtime).c_str());
	326	headers = curl_slist_append(headers, Buf);
	327	}
d6039f9e MV	328	else if(Itm->LastModified > 0)
	329	{
	330	curl_easy_setopt(curl, CURLOPT_TIMECONDITION, CURL_TIMECOND_IFMODSINCE);
	331	curl_easy_setopt(curl, CURLOPT_TIMEVALUE, Itm->LastModified);
4c499611	332	}
d546f98d MV	333
	334	// go for it - if the file exists, append on it
	335	File = new FileFd(Itm->DestFile, FileFd::WriteAny);
fd46d305	336	Server = new HttpsServerState(Itm->Uri, this);
85050e76	337
d546f98d MV	338	// keep apt updated
	339	Res.Filename = Itm->DestFile;
	340
	341	// get it!
	342	CURLcode success = curl_easy_perform(curl);
d546f98d	343
1dea08eb MV	344	// If the server returns 200 OK but the If-Modified-Since condition is not
	345	// met, CURLINFO_CONDITION_UNMET will be set to 1
	346	long curl_condition_unmet = 0;
	347	curl_easy_getinfo(curl, CURLINFO_CONDITION_UNMET, &curl_condition_unmet);
	348
db1f1469	349	File->Close();
85050e76	350	curl_slist_free_all(headers);
db1f1469	351
d546f98d	352	// cleanup
85050e76	353	if (success != 0)
4c499611	354	{
9b5d79ec	355	_error->Error("%s", curl_errorstr);
db1f1469	356	unlink(File->Name().c_str());
85050e76 DK	357	return false;
	358	}
	359
	360	// server says file not modified
fd46d305	361	if (Server->Result == 304 \|\| curl_condition_unmet == 1)
85050e76 DK	362	{
	363	unlink(File->Name().c_str());
	364	Res.IMSHit = true;
	365	Res.LastModified = Itm->LastModified;
	366	Res.Size = 0;
	367	URIDone(Res);
d546f98d MV	368	return true;
d546f98d MV	369	}
fd46d305	370	Res.IMSHit = false;
d546f98d	371
fd46d305 DK	372	if (Server->Result != 200 && // OK
	373	Server->Result != 206 && // Partial
	374	Server->Result != 416) // invalid Range
85050e76 DK	375	{
85050e76 DK	376	char err[255];
fd46d305	377	snprintf(err, sizeof(err) - 1, "HttpError%i", Server->Result);
85050e76 DK	378	SetFailReason(err);
	379	_error->Error("%s", err);
	380	// unlink, no need keep 401/404 page content in partial/
	381	unlink(File->Name().c_str());
	382	return false;
	383	}
	384
	385	struct stat resultStat;
	386	if (unlikely(stat(File->Name().c_str(), &resultStat) != 0))
	387	{
	388	_error->Errno("stat", "Unable to access file %s", File->Name().c_str());
	389	return false;
	390	}
	391	Res.Size = resultStat.st_size;
	392
	393	// invalid range-request
fd46d305	394	if (Server->Result == 416)
85050e76 DK	395	{
	396	unlink(File->Name().c_str());
	397	Res.Size = 0;
	398	delete File;
	399	Redirect(Itm->Uri);
	400	return true;
5820530d OS	401	}
5820530d OS	402
85050e76 DK	403	// Timestamp
	404	curl_easy_getinfo(curl, CURLINFO_FILETIME, &Res.LastModified);
	405	if (Res.LastModified != -1)
	406	{
9ce3cfc9 DK	407	struct timespec times[2];
	408	times[0].tv_sec = Res.LastModified;
	409	times[1].tv_sec = Res.LastModified;
	410	times[0].tv_nsec = times[1].tv_nsec = 0;
	411	futimens(File->Fd(), times);
85050e76 DK	412	}
	413	else
	414	Res.LastModified = resultStat.st_mtime;
d546f98d MV	415
	416	// take hashes
	417	Hashes Hash;
	418	FileFd Fd(Res.Filename, FileFd::ReadOnly);
109eb151	419	Hash.AddFD(Fd);
d546f98d	420	Res.TakeHashes(Hash);
85050e76	421
d546f98d MV	422	// keep apt updated
	423	URIDone(Res);
	424
	425	// cleanup
d546f98d MV	426	Res.Size = 0;
d546f98d MV	427	delete File;
d546f98d MV	428
	429	return true;
	430	};
	431
	432	int main()
	433	{
	434	setlocale(LC_ALL, "");
	435
	436	HttpsMethod Mth;
	437	curl_global_init(CURL_GLOBAL_SSL) ;
	438
	439	return Mth.Run();
	440	}
	441