[ntk/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 <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 <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 <apti18n.h>
#include <sstream>

#include "config.h"
#include "https.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)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));

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

	// 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)
{
   stringstream ss;
   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 != "")
      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
   int default_verify = 2;
   bool verify = _config->FindB("Acquire::https::Verify-Host",true);
   knob = "Acquire::https::"+remotehost+"::Verify-Host";
   verify = _config->FindB(knob.c_str(),verify);
   if (!verify)
      default_verify = 0;
   curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, verify);

   // 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 != "")
      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 != "")
      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);

   // 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");
      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 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")")));

   // set timeout
   int 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 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 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-\r\nIf-Range: %s\r\n",
	      (long)SBuf.st_size - 1,
	      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);

   // cleanup
   if(success != 0) 
   {
      _error->Error("%s", curl_errorstr);
      Fail();
      return true;
   }
   File->Close();

   // 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.Fd(), Fd.Size());
   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 /{{{/
	13	#include <apt-pkg/fileutl.h>
	14	#include <apt-pkg/acquire-method.h>
	15	#include <apt-pkg/error.h>
	16	#include <apt-pkg/hashes.h>
592b7800	17	#include <apt-pkg/netrc.h>
d546f98d MV	18
	19	#include <sys/stat.h>
	20	#include <sys/time.h>
	21	#include <utime.h>
	22	#include <unistd.h>
	23	#include <signal.h>
	24	#include <stdio.h>
	25	#include <errno.h>
	26	#include <string.h>
	27	#include <iostream>
	28	#include <apti18n.h>
	29	#include <sstream>
	30
	31	#include "config.h"
	32	#include "https.h"
	33
	34	/}}}/
	35	using namespace std;
	36
	37	size_t
	38	HttpsMethod::write_data(void buffer, size_t size, size_t nmemb, void userp)
	39	{
	40	HttpsMethod me = (HttpsMethod )userp;
	41
	42	if(me->File->Write(buffer, size*nmemb) != true)
	43	return false;
	44
	45	return size*nmemb;
	46	}
	47
	48	int
	49	HttpsMethod::progress_callback(void *clientp, double dltotal, double dlnow,
	50	double ultotal, double ulnow)
	51	{
	52	HttpsMethod me = (HttpsMethod )clientp;
	53	if(dltotal > 0 && me->Res.Size == 0) {
21fd1746	54	me->Res.Size = (unsigned long)dltotal;
d546f98d MV	55	me->URIStart(me->Res);
	56	}
	57	return 0;
	58	}
	59
b9e9a44b DK	60	void HttpsMethod::SetupProxy() { /{{{/
	61	URI ServerName = Queue->Uri;
	62
	63	// Determine the proxy setting - try https first, fallback to http and use env at last
	64	string UseProxy = _config->Find("Acquire::https::Proxy::" + ServerName.Host,
	65	_config->Find("Acquire::http::Proxy::" + ServerName.Host));
	66
	67	if (UseProxy.empty() == true)
	68	UseProxy = _config->Find("Acquire::https::Proxy", _config->Find("Acquire::http::Proxy"));
	69
	70	// User want to use NO proxy, so nothing to setup
	71	if (UseProxy == "DIRECT")
	72	return;
	73
	74	if (UseProxy.empty() == false) {
	75	// Parse no_proxy, a comma (,) separated list of domains we don't want to use
	76	// a proxy for so we stop right here if it is in the list
	77	if (getenv("no_proxy") != 0 && CheckDomainList(ServerName.Host,getenv("no_proxy")) == true)
	78	return;
	79	} else {
	80	const char* result = getenv("http_proxy");
	81	UseProxy = result == NULL ? "" : result;
	82	}
	83
	84	// Determine what host and port to use based on the proxy settings
	85	if (UseProxy.empty() == false) {
	86	Proxy = UseProxy;
	87	if (Proxy.Port != 1)
	88	curl_easy_setopt(curl, CURLOPT_PROXYPORT, Proxy.Port);
	89	curl_easy_setopt(curl, CURLOPT_PROXY, Proxy.Host.c_str());
	90	}
	91	} /}}}/
d546f98d MV	92	// HttpsMethod::Fetch - Fetch an item /{{{/
	93	// ---------------------------------------------------------------------
	94	/* This adds an item to the pipeline. We keep the pipeline at a fixed
	95	depth. */
	96	bool HttpsMethod::Fetch(FetchItem *Itm)
	97	{
	98	stringstream ss;
	99	struct stat SBuf;
	100	struct curl_slist *headers=NULL;
714ee06c	101	char curl_errorstr[CURL_ERROR_SIZE];
4c499611	102	long curl_responsecode;
c769cd6f MV	103	URI Uri = Itm->Uri;
c769cd6f MV	104	string remotehost = Uri.Host;
d546f98d MV	105
d546f98d MV	106	// TODO:
d546f98d MV	107	// - http::Pipeline-Depth
	108	// - error checking/reporting
	109	// - more debug options? (CURLOPT_DEBUGFUNCTION?)
	110
5820530d	111	curl_easy_reset(curl);
d546f98d MV	112	SetupProxy();
d546f98d MV	113
1de1f703	114	maybe_add_auth (Uri, _config->FindFile("Dir::Etc::netrc"));
592b7800	115
d546f98d	116	// callbacks
01fc8930	117	curl_easy_setopt(curl, CURLOPT_URL, static_cast<string>(Uri).c_str());
d546f98d MV	118	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);
	119	curl_easy_setopt(curl, CURLOPT_WRITEDATA, this);
	120	curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, progress_callback);
	121	curl_easy_setopt(curl, CURLOPT_PROGRESSDATA, this);
	122	curl_easy_setopt(curl, CURLOPT_NOPROGRESS, false);
	123	curl_easy_setopt(curl, CURLOPT_FAILONERROR, true);
5820530d	124	curl_easy_setopt(curl, CURLOPT_FILETIME, true);
d546f98d	125
c769cd6f MV	126	// SSL parameters are set by default to the common (non mirror-specific) value
	127	// if available (or a default one) and gets overload by mirror-specific ones.
	128
	129	// File containing the list of trusted CA.
	130	string cainfo = _config->Find("Acquire::https::CaInfo","");
	131	string knob = "Acquire::https::"+remotehost+"::CaInfo";
	132	cainfo = _config->Find(knob.c_str(),cainfo.c_str());
	133	if(cainfo != "")
	134	curl_easy_setopt(curl, CURLOPT_CAINFO,cainfo.c_str());
	135
	136	// Check server certificate against previous CA list ...
	137	bool peer_verify = _config->FindB("Acquire::https::Verify-Peer",true);
	138	knob = "Acquire::https::" + remotehost + "::Verify-Peer";
	139	peer_verify = _config->FindB(knob.c_str(), peer_verify);
714ee06c MV	140	curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, peer_verify);
714ee06c MV	141
c769cd6f MV	142	// ... and hostname against cert CN or subjectAltName
	143	int default_verify = 2;
	144	bool verify = _config->FindB("Acquire::https::Verify-Host",true);
	145	knob = "Acquire::https::"+remotehost+"::Verify-Host";
	146	verify = _config->FindB(knob.c_str(),verify);
	147	if (!verify)
	148	default_verify = 0;
	149	curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, verify);
	150
	151	// For client authentication, certificate file ...
714ee06c	152	string pem = _config->Find("Acquire::https::SslCert","");
c769cd6f MV	153	knob = "Acquire::https::"+remotehost+"::SslCert";
c769cd6f MV	154	pem = _config->Find(knob.c_str(),pem.c_str());
714ee06c MV	155	if(pem != "")
714ee06c MV	156	curl_easy_setopt(curl, CURLOPT_SSLCERT, pem.c_str());
c769cd6f MV	157
	158	// ... and associated key.
	159	string key = _config->Find("Acquire::https::SslKey","");
	160	knob = "Acquire::https::"+remotehost+"::SslKey";
	161	key = _config->Find(knob.c_str(),key.c_str());
	162	if(key != "")
	163	curl_easy_setopt(curl, CURLOPT_SSLKEY, key.c_str());
	164
	165	// Allow forcing SSL version to SSLv3 or TLSv1 (SSLv2 is not
	166	// supported by GnuTLS).
	167	long final_version = CURL_SSLVERSION_DEFAULT;
	168	string sslversion = _config->Find("Acquire::https::SslForceVersion","");
	169	knob = "Acquire::https::"+remotehost+"::SslForceVersion";
	170	sslversion = _config->Find(knob.c_str(),sslversion.c_str());
	171	if(sslversion == "TLSv1")
	172	final_version = CURL_SSLVERSION_TLSv1;
	173	else if(sslversion == "SSLv3")
	174	final_version = CURL_SSLVERSION_SSLv3;
	175	curl_easy_setopt(curl, CURLOPT_SSLVERSION, final_version);
d546f98d MV	176
d546f98d MV	177	// cache-control
b9e9a44b DK	178	if(_config->FindB("Acquire::https::No-Cache",
b9e9a44b DK	179	_config->FindB("Acquire::http::No-Cache",false)) == false)
d546f98d MV	180	{
d546f98d MV	181	// cache enabled
b9e9a44b DK	182	if (_config->FindB("Acquire::https::No-Store",
b9e9a44b DK	183	_config->FindB("Acquire::http::No-Store",false)) == true)
d546f98d	184	headers = curl_slist_append(headers,"Cache-Control: no-store");
b9e9a44b DK	185	ioprintf(ss, "Cache-Control: max-age=%u", _config->FindI("Acquire::https::Max-Age",
b9e9a44b DK	186	_config->FindI("Acquire::http::Max-Age",0)));
d546f98d MV	187	headers = curl_slist_append(headers, ss.str().c_str());
	188	} else {
	189	// cache disabled by user
	190	headers = curl_slist_append(headers, "Cache-Control: no-cache");
	191	headers = curl_slist_append(headers, "Pragma: no-cache");
	192	}
	193	curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
	194
d546f98d	195	// speed limit
b9e9a44b DK	196	int dlLimit = _config->FindI("Acquire::https::Dl-Limit",
b9e9a44b DK	197	_config->FindI("Acquire::http::Dl-Limit",0))*1024;
d546f98d MV	198	if (dlLimit > 0)
	199	curl_easy_setopt(curl, CURLOPT_MAX_RECV_SPEED_LARGE, dlLimit);
	200
	201	// set header
9f542bae DK	202	curl_easy_setopt(curl, CURLOPT_USERAGENT,
	203	_config->Find("Acquire::https::User-Agent",
	204	_config->Find("Acquire::http::User-Agent",
	205	"Debian APT-CURL/1.0 ("VERSION")")));
d546f98d	206
cc615257	207	// set timeout
b9e9a44b DK	208	int timeout = _config->FindI("Acquire::https::Timeout",
b9e9a44b DK	209	_config->FindI("Acquire::http::Timeout",120));
cc615257	210	curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, timeout);
43cf55db	211	//set really low lowspeed timeout (see #497983)
5085e660	212	curl_easy_setopt(curl, CURLOPT_LOW_SPEED_LIMIT, DL_MIN_SPEED);
43cf55db	213	curl_easy_setopt(curl, CURLOPT_LOW_SPEED_TIME, timeout);
cc615257	214
668ce84d	215	// set redirect options and default to 10 redirects
b9e9a44b DK	216	bool AllowRedirect = _config->FindB("Acquire::https::AllowRedirect",
b9e9a44b DK	217	_config->FindB("Acquire::http::AllowRedirect",true));
668ce84d MV	218	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, AllowRedirect);
	219	curl_easy_setopt(curl, CURLOPT_MAXREDIRS, 10);
	220
d546f98d	221	// debug
714ee06c	222	if(_config->FindB("Debug::Acquire::https", false))
d546f98d MV	223	curl_easy_setopt(curl, CURLOPT_VERBOSE, true);
d546f98d MV	224
714ee06c MV	225	// error handling
	226	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, curl_errorstr);
	227
d6039f9e	228	// if we have the file send an if-range query with a range header
4c499611 MV	229	if (stat(Itm->DestFile.c_str(),&SBuf) >= 0 && SBuf.st_size > 0)
	230	{
	231	char Buf[1000];
	232	sprintf(Buf,"Range: bytes=%li-\r\nIf-Range: %s\r\n",
	233	(long)SBuf.st_size - 1,
	234	TimeRFC1123(SBuf.st_mtime).c_str());
	235	headers = curl_slist_append(headers, Buf);
d6039f9e MV	236	}
	237	else if(Itm->LastModified > 0)
	238	{
	239	curl_easy_setopt(curl, CURLOPT_TIMECONDITION, CURL_TIMECOND_IFMODSINCE);
	240	curl_easy_setopt(curl, CURLOPT_TIMEVALUE, Itm->LastModified);
4c499611	241	}
d546f98d MV	242
	243	// go for it - if the file exists, append on it
	244	File = new FileFd(Itm->DestFile, FileFd::WriteAny);
d6039f9e MV	245	if (File->Size() > 0)
d6039f9e MV	246	File->Seek(File->Size() - 1);
d546f98d MV	247
	248	// keep apt updated
	249	Res.Filename = Itm->DestFile;
	250
	251	// get it!
	252	CURLcode success = curl_easy_perform(curl);
4c499611	253	curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &curl_responsecode);
d546f98d	254
5820530d OS	255	long curl_servdate;
	256	curl_easy_getinfo(curl, CURLINFO_FILETIME, &curl_servdate);
	257
d546f98d	258	// cleanup
4c499611 MV	259	if(success != 0)
4c499611 MV	260	{
9b5d79ec	261	_error->Error("%s", curl_errorstr);
d546f98d MV	262	Fail();
	263	return true;
	264	}
4c499611	265	File->Close();
d546f98d	266
5820530d OS	267	// Timestamp
	268	struct utimbuf UBuf;
	269	if (curl_servdate != -1) {
	270	UBuf.actime = curl_servdate;
	271	UBuf.modtime = curl_servdate;
	272	utime(File->Name().c_str(),&UBuf);
	273	}
	274
d546f98d MV	275	// check the downloaded result
	276	struct stat Buf;
	277	if (stat(File->Name().c_str(),&Buf) == 0)
	278	{
d546f98d MV	279	Res.Filename = File->Name();
	280	Res.LastModified = Buf.st_mtime;
	281	Res.IMSHit = false;
4c499611	282	if (curl_responsecode == 304)
714ee06c	283	{
d6039f9e	284	unlink(File->Name().c_str());
d546f98d	285	Res.IMSHit = true;
714ee06c	286	Res.LastModified = Itm->LastModified;
d6039f9e MV	287	Res.Size = 0;
	288	URIDone(Res);
	289	return true;
714ee06c	290	}
d6039f9e	291	Res.Size = Buf.st_size;
d546f98d MV	292	}
	293
	294	// take hashes
	295	Hashes Hash;
	296	FileFd Fd(Res.Filename, FileFd::ReadOnly);
	297	Hash.AddFD(Fd.Fd(), Fd.Size());
	298	Res.TakeHashes(Hash);
	299
	300	// keep apt updated
	301	URIDone(Res);
	302
	303	// cleanup
d546f98d MV	304	Res.Size = 0;
	305	delete File;
	306	curl_slist_free_all(headers);
	307
	308	return true;
	309	};
	310
	311	int main()
	312	{
	313	setlocale(LC_ALL, "");
	314
	315	HttpsMethod Mth;
	316	curl_global_init(CURL_GLOBAL_SSL) ;
	317
	318	return Mth.Run();
	319	}
	320
	321