[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 <utime.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::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;
}

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

   // 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("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());
   }
}									/*}}}*/
// 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];
   long curl_responsecode;
   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_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_FAILONERROR, true);
   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 ("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_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 - 1);
      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);
   if (File->Size() > 0)
      File->Seek(File->Size() - 1);
   
   // keep apt updated
   Res.Filename = Itm->DestFile;

   // get it!
   CURLcode success = curl_easy_perform(curl);
   curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &curl_responsecode);

   long curl_servdate;
   curl_easy_getinfo(curl, CURLINFO_FILETIME, &curl_servdate);

   File->Close();

   // cleanup
   if(success != 0) 
   {
      _error->Error("%s", curl_errorstr);
      // unlink, no need keep 401/404 page content in partial/
      unlink(File->Name().c_str());
      Fail();
      return true;
   }

   // Timestamp
   struct utimbuf UBuf;
   if (curl_servdate != -1) {
       UBuf.actime = curl_servdate;
       UBuf.modtime = curl_servdate;
       utime(File->Name().c_str(),&UBuf);
   }

   // check the downloaded result
   struct stat Buf;
   if (stat(File->Name().c_str(),&Buf) == 0)
   {
      Res.Filename = File->Name();
      Res.LastModified = Buf.st_mtime;
      Res.IMSHit = false;
      if (curl_responsecode == 304)
      {
	 unlink(File->Name().c_str());
	 Res.IMSHit = true;
	 Res.LastModified = Itm->LastModified;
	 Res.Size = 0;
	 URIDone(Res);
	 return true;
      }
      Res.Size = Buf.st_size;
   }

   // 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;
   curl_slist_free_all(headers);

   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>
	24	#include <utime.h>
	25	#include <unistd.h>
	26	#include <signal.h>
	27	#include <stdio.h>
	28	#include <errno.h>
	29	#include <string.h>
	30	#include <iostream>
d546f98d MV	31	#include <sstream>
	32
	33	#include "config.h"
	34	#include "https.h"
ea542140	35	#include <apti18n.h>
d546f98d MV	36	/}}}/
	37	using namespace std;
	38
	39	size_t
	40	HttpsMethod::write_data(void buffer, size_t size, size_t nmemb, void userp)
	41	{
	42	HttpsMethod me = (HttpsMethod )userp;
	43
	44	if(me->File->Write(buffer, size*nmemb) != true)
	45	return false;
	46
	47	return size*nmemb;
	48	}
	49
	50	int
	51	HttpsMethod::progress_callback(void *clientp, double dltotal, double dlnow,
	52	double ultotal, double ulnow)
	53	{
	54	HttpsMethod me = (HttpsMethod )clientp;
	55	if(dltotal > 0 && me->Res.Size == 0) {
650faab0	56	me->Res.Size = (unsigned long long)dltotal;
d546f98d MV	57	me->URIStart(me->Res);
	58	}
	59	return 0;
	60	}
	61
4407a02f	62	void HttpsMethod::SetupProxy() /{{{/
d546f98d MV	63	{
	64	URI ServerName = Queue->Uri;
	65
4407a02f MV	66	// Determine the proxy setting - try https first, fallback to http and use env at last
	67	string UseProxy = _config->Find("Acquire::https::Proxy::" + ServerName.Host,
	68	_config->Find("Acquire::http::Proxy::" + ServerName.Host).c_str());
	69
	70	if (UseProxy.empty() == true)
	71	UseProxy = _config->Find("Acquire::https::Proxy", _config->Find("Acquire::http::Proxy").c_str());
	72
	73	// User want to use NO proxy, so nothing to setup
	74	if (UseProxy == "DIRECT")
	75	return;
	76
	77	if (UseProxy.empty() == false)
d546f98d	78	{
4407a02f MV	79	// Parse no_proxy, a comma (,) separated list of domains we don't want to use
	80	// a proxy for so we stop right here if it is in the list
	81	if (getenv("no_proxy") != 0 && CheckDomainList(ServerName.Host,getenv("no_proxy")) == true)
	82	return;
	83	} else {
	84	const char* result = getenv("http_proxy");
	85	UseProxy = result == NULL ? "" : result;
d546f98d	86	}
4407a02f	87
d546f98d	88	// Determine what host and port to use based on the proxy settings
4407a02f	89	if (UseProxy.empty() == false)
d546f98d	90	{
4407a02f MV	91	Proxy = UseProxy;
4407a02f MV	92	if (Proxy.Port != 1)
d546f98d MV	93	curl_easy_setopt(curl, CURLOPT_PROXYPORT, Proxy.Port);
	94	curl_easy_setopt(curl, CURLOPT_PROXY, Proxy.Host.c_str());
	95	}
b9e9a44b	96	} /}}}/
d546f98d MV	97	// HttpsMethod::Fetch - Fetch an item /{{{/
	98	// ---------------------------------------------------------------------
	99	/* This adds an item to the pipeline. We keep the pipeline at a fixed
	100	depth. */
	101	bool HttpsMethod::Fetch(FetchItem *Itm)
	102	{
d546f98d MV	103	struct stat SBuf;
d546f98d MV	104	struct curl_slist *headers=NULL;
714ee06c	105	char curl_errorstr[CURL_ERROR_SIZE];
4c499611	106	long curl_responsecode;
c769cd6f MV	107	URI Uri = Itm->Uri;
c769cd6f MV	108	string remotehost = Uri.Host;
d546f98d MV	109
d546f98d MV	110	// TODO:
d546f98d MV	111	// - http::Pipeline-Depth
	112	// - error checking/reporting
	113	// - more debug options? (CURLOPT_DEBUGFUNCTION?)
	114
5820530d	115	curl_easy_reset(curl);
d546f98d MV	116	SetupProxy();
d546f98d MV	117
1de1f703	118	maybe_add_auth (Uri, _config->FindFile("Dir::Etc::netrc"));
592b7800	119
d546f98d	120	// callbacks
01fc8930	121	curl_easy_setopt(curl, CURLOPT_URL, static_cast<string>(Uri).c_str());
d546f98d MV	122	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);
	123	curl_easy_setopt(curl, CURLOPT_WRITEDATA, this);
	124	curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, progress_callback);
	125	curl_easy_setopt(curl, CURLOPT_PROGRESSDATA, this);
	126	curl_easy_setopt(curl, CURLOPT_NOPROGRESS, false);
	127	curl_easy_setopt(curl, CURLOPT_FAILONERROR, true);
5820530d	128	curl_easy_setopt(curl, CURLOPT_FILETIME, true);
d546f98d	129
c769cd6f MV	130	// SSL parameters are set by default to the common (non mirror-specific) value
	131	// if available (or a default one) and gets overload by mirror-specific ones.
	132
	133	// File containing the list of trusted CA.
	134	string cainfo = _config->Find("Acquire::https::CaInfo","");
	135	string knob = "Acquire::https::"+remotehost+"::CaInfo";
	136	cainfo = _config->Find(knob.c_str(),cainfo.c_str());
46e39c8e	137	if(cainfo.empty() == false)
c769cd6f MV	138	curl_easy_setopt(curl, CURLOPT_CAINFO,cainfo.c_str());
	139
	140	// Check server certificate against previous CA list ...
	141	bool peer_verify = _config->FindB("Acquire::https::Verify-Peer",true);
	142	knob = "Acquire::https::" + remotehost + "::Verify-Peer";
	143	peer_verify = _config->FindB(knob.c_str(), peer_verify);
714ee06c MV	144	curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, peer_verify);
714ee06c MV	145
c769cd6f	146	// ... and hostname against cert CN or subjectAltName
c769cd6f MV	147	bool verify = _config->FindB("Acquire::https::Verify-Host",true);
	148	knob = "Acquire::https::"+remotehost+"::Verify-Host";
	149	verify = _config->FindB(knob.c_str(),verify);
52b22cea DK	150	int const default_verify = (verify == true) ? 2 : 0;
52b22cea DK	151	curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, default_verify);
c769cd6f	152
46e39c8e MV	153	// Also enforce issuer of server certificate using its cert
	154	string issuercert = _config->Find("Acquire::https::IssuerCert","");
	155	knob = "Acquire::https::"+remotehost+"::IssuerCert";
	156	issuercert = _config->Find(knob.c_str(),issuercert.c_str());
	157	if(issuercert.empty() == false)
	158	curl_easy_setopt(curl, CURLOPT_ISSUERCERT,issuercert.c_str());
	159
c769cd6f	160	// For client authentication, certificate file ...
714ee06c	161	string pem = _config->Find("Acquire::https::SslCert","");
c769cd6f MV	162	knob = "Acquire::https::"+remotehost+"::SslCert";
c769cd6f MV	163	pem = _config->Find(knob.c_str(),pem.c_str());
46e39c8e	164	if(pem.empty() == false)
714ee06c	165	curl_easy_setopt(curl, CURLOPT_SSLCERT, pem.c_str());
c769cd6f MV	166
	167	// ... and associated key.
	168	string key = _config->Find("Acquire::https::SslKey","");
	169	knob = "Acquire::https::"+remotehost+"::SslKey";
	170	key = _config->Find(knob.c_str(),key.c_str());
46e39c8e	171	if(key.empty() == false)
c769cd6f MV	172	curl_easy_setopt(curl, CURLOPT_SSLKEY, key.c_str());
	173
	174	// Allow forcing SSL version to SSLv3 or TLSv1 (SSLv2 is not
	175	// supported by GnuTLS).
	176	long final_version = CURL_SSLVERSION_DEFAULT;
	177	string sslversion = _config->Find("Acquire::https::SslForceVersion","");
	178	knob = "Acquire::https::"+remotehost+"::SslForceVersion";
	179	sslversion = _config->Find(knob.c_str(),sslversion.c_str());
	180	if(sslversion == "TLSv1")
	181	final_version = CURL_SSLVERSION_TLSv1;
	182	else if(sslversion == "SSLv3")
	183	final_version = CURL_SSLVERSION_SSLv3;
	184	curl_easy_setopt(curl, CURLOPT_SSLVERSION, final_version);
d546f98d	185
46e39c8e MV	186	// CRL file
	187	string crlfile = _config->Find("Acquire::https::CrlFile","");
	188	knob = "Acquire::https::"+remotehost+"::CrlFile";
	189	crlfile = _config->Find(knob.c_str(),crlfile.c_str());
	190	if(crlfile.empty() == false)
	191	curl_easy_setopt(curl, CURLOPT_CRLFILE, crlfile.c_str());
	192
d546f98d	193	// cache-control
b9e9a44b DK	194	if(_config->FindB("Acquire::https::No-Cache",
b9e9a44b DK	195	_config->FindB("Acquire::http::No-Cache",false)) == false)
d546f98d MV	196	{
d546f98d MV	197	// cache enabled
b9e9a44b DK	198	if (_config->FindB("Acquire::https::No-Store",
b9e9a44b DK	199	_config->FindB("Acquire::http::No-Store",false)) == true)
d546f98d	200	headers = curl_slist_append(headers,"Cache-Control: no-store");
8654fae9	201	stringstream ss;
b9e9a44b DK	202	ioprintf(ss, "Cache-Control: max-age=%u", _config->FindI("Acquire::https::Max-Age",
b9e9a44b DK	203	_config->FindI("Acquire::http::Max-Age",0)));
d546f98d MV	204	headers = curl_slist_append(headers, ss.str().c_str());
	205	} else {
	206	// cache disabled by user
	207	headers = curl_slist_append(headers, "Cache-Control: no-cache");
	208	headers = curl_slist_append(headers, "Pragma: no-cache");
	209	}
	210	curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
	211
d546f98d	212	// speed limit
46e39c8e	213	int const dlLimit = _config->FindI("Acquire::https::Dl-Limit",
b9e9a44b	214	_config->FindI("Acquire::http::Dl-Limit",0))*1024;
d546f98d MV	215	if (dlLimit > 0)
	216	curl_easy_setopt(curl, CURLOPT_MAX_RECV_SPEED_LARGE, dlLimit);
	217
	218	// set header
9f542bae DK	219	curl_easy_setopt(curl, CURLOPT_USERAGENT,
	220	_config->Find("Acquire::https::User-Agent",
	221	_config->Find("Acquire::http::User-Agent",
e4c2981b	222	"Debian APT-CURL/1.0 ("VERSION")").c_str()).c_str());
d546f98d	223
cc615257	224	// set timeout
46e39c8e	225	int const timeout = _config->FindI("Acquire::https::Timeout",
b9e9a44b	226	_config->FindI("Acquire::http::Timeout",120));
cc615257	227	curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, timeout);
43cf55db	228	//set really low lowspeed timeout (see #497983)
5085e660	229	curl_easy_setopt(curl, CURLOPT_LOW_SPEED_LIMIT, DL_MIN_SPEED);
43cf55db	230	curl_easy_setopt(curl, CURLOPT_LOW_SPEED_TIME, timeout);
cc615257	231
668ce84d	232	// set redirect options and default to 10 redirects
46e39c8e	233	bool const AllowRedirect = _config->FindB("Acquire::https::AllowRedirect",
b9e9a44b	234	_config->FindB("Acquire::http::AllowRedirect",true));
668ce84d MV	235	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, AllowRedirect);
	236	curl_easy_setopt(curl, CURLOPT_MAXREDIRS, 10);
	237
d546f98d	238	// debug
714ee06c	239	if(_config->FindB("Debug::Acquire::https", false))
d546f98d MV	240	curl_easy_setopt(curl, CURLOPT_VERBOSE, true);
d546f98d MV	241
714ee06c MV	242	// error handling
	243	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, curl_errorstr);
	244
6f4501f9 DK	245	// If we ask for uncompressed files servers might respond with content-
	246	// negotation which lets us end up with compressed files we do not support,
	247	// see 657029, 657560 and co, so if we have no extension on the request
	248	// ask for text only. As a sidenote: If there is nothing to negotate servers
	249	// seem to be nice and ignore it.
	250	if (_config->FindB("Acquire::https::SendAccept", _config->FindB("Acquire::http::SendAccept", true)) == true)
	251	{
	252	size_t const filepos = Itm->Uri.find_last_of('/');
	253	string const file = Itm->Uri.substr(filepos + 1);
	254	if (flExtension(file) == file)
	255	headers = curl_slist_append(headers, "Accept: text/*");
	256	}
	257
d6039f9e	258	// if we have the file send an if-range query with a range header
4c499611 MV	259	if (stat(Itm->DestFile.c_str(),&SBuf) >= 0 && SBuf.st_size > 0)
	260	{
	261	char Buf[1000];
8654fae9	262	sprintf(Buf, "Range: bytes=%li-", (long) SBuf.st_size - 1);
4c499611	263	headers = curl_slist_append(headers, Buf);
8654fae9 DK	264	sprintf(Buf, "If-Range: %s", TimeRFC1123(SBuf.st_mtime).c_str());
	265	headers = curl_slist_append(headers, Buf);
	266	}
d6039f9e MV	267	else if(Itm->LastModified > 0)
	268	{
	269	curl_easy_setopt(curl, CURLOPT_TIMECONDITION, CURL_TIMECOND_IFMODSINCE);
	270	curl_easy_setopt(curl, CURLOPT_TIMEVALUE, Itm->LastModified);
4c499611	271	}
d546f98d MV	272
	273	// go for it - if the file exists, append on it
	274	File = new FileFd(Itm->DestFile, FileFd::WriteAny);
d6039f9e MV	275	if (File->Size() > 0)
d6039f9e MV	276	File->Seek(File->Size() - 1);
d546f98d MV	277
	278	// keep apt updated
	279	Res.Filename = Itm->DestFile;
	280
	281	// get it!
	282	CURLcode success = curl_easy_perform(curl);
4c499611	283	curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &curl_responsecode);
d546f98d	284
5820530d OS	285	long curl_servdate;
	286	curl_easy_getinfo(curl, CURLINFO_FILETIME, &curl_servdate);
	287
db1f1469 MV	288	File->Close();
db1f1469 MV	289
d546f98d	290	// cleanup
4c499611 MV	291	if(success != 0)
4c499611 MV	292	{
9b5d79ec	293	_error->Error("%s", curl_errorstr);
db1f1469 MV	294	// unlink, no need keep 401/404 page content in partial/
db1f1469 MV	295	unlink(File->Name().c_str());
d546f98d MV	296	Fail();
	297	return true;
	298	}
	299
5820530d OS	300	// Timestamp
	301	struct utimbuf UBuf;
	302	if (curl_servdate != -1) {
	303	UBuf.actime = curl_servdate;
	304	UBuf.modtime = curl_servdate;
	305	utime(File->Name().c_str(),&UBuf);
	306	}
	307
d546f98d MV	308	// check the downloaded result
	309	struct stat Buf;
	310	if (stat(File->Name().c_str(),&Buf) == 0)
	311	{
d546f98d MV	312	Res.Filename = File->Name();
	313	Res.LastModified = Buf.st_mtime;
	314	Res.IMSHit = false;
4c499611	315	if (curl_responsecode == 304)
714ee06c	316	{
d6039f9e	317	unlink(File->Name().c_str());
d546f98d	318	Res.IMSHit = true;
714ee06c	319	Res.LastModified = Itm->LastModified;
d6039f9e MV	320	Res.Size = 0;
	321	URIDone(Res);
	322	return true;
714ee06c	323	}
d6039f9e	324	Res.Size = Buf.st_size;
d546f98d MV	325	}
	326
	327	// take hashes
	328	Hashes Hash;
	329	FileFd Fd(Res.Filename, FileFd::ReadOnly);
109eb151	330	Hash.AddFD(Fd);
d546f98d MV	331	Res.TakeHashes(Hash);
	332
	333	// keep apt updated
	334	URIDone(Res);
	335
	336	// cleanup
d546f98d MV	337	Res.Size = 0;
	338	delete File;
	339	curl_slist_free_all(headers);
	340
	341	return true;
	342	};
	343
	344	int main()
	345	{
	346	setlocale(LC_ALL, "");
	347
	348	HttpsMethod Mth;
	349	curl_global_init(CURL_GLOBAL_SSL) ;
	350
	351	return Mth.Run();
	352	}
	353
	354