[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).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)
{
   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")").c_str()).c_str());

   // 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
4407a02f	60	void HttpsMethod::SetupProxy() /{{{/
d546f98d MV	61	{
	62	URI ServerName = Queue->Uri;
	63
4407a02f MV	64	// Determine the proxy setting - try https first, fallback to http and use env at last
	65	string UseProxy = _config->Find("Acquire::https::Proxy::" + ServerName.Host,
	66	_config->Find("Acquire::http::Proxy::" + ServerName.Host).c_str());
	67
	68	if (UseProxy.empty() == true)
	69	UseProxy = _config->Find("Acquire::https::Proxy", _config->Find("Acquire::http::Proxy").c_str());
	70
	71	// User want to use NO proxy, so nothing to setup
	72	if (UseProxy == "DIRECT")
	73	return;
	74
	75	if (UseProxy.empty() == false)
d546f98d	76	{
4407a02f MV	77	// Parse no_proxy, a comma (,) separated list of domains we don't want to use
	78	// a proxy for so we stop right here if it is in the list
	79	if (getenv("no_proxy") != 0 && CheckDomainList(ServerName.Host,getenv("no_proxy")) == true)
	80	return;
	81	} else {
	82	const char* result = getenv("http_proxy");
	83	UseProxy = result == NULL ? "" : result;
d546f98d	84	}
4407a02f	85
d546f98d	86	// Determine what host and port to use based on the proxy settings
4407a02f	87	if (UseProxy.empty() == false)
d546f98d	88	{
4407a02f MV	89	Proxy = UseProxy;
4407a02f MV	90	if (Proxy.Port != 1)
d546f98d MV	91	curl_easy_setopt(curl, CURLOPT_PROXYPORT, Proxy.Port);
	92	curl_easy_setopt(curl, CURLOPT_PROXY, Proxy.Host.c_str());
	93	}
b9e9a44b	94	} /}}}/
d546f98d MV	95	// HttpsMethod::Fetch - Fetch an item /{{{/
	96	// ---------------------------------------------------------------------
	97	/* This adds an item to the pipeline. We keep the pipeline at a fixed
	98	depth. */
	99	bool HttpsMethod::Fetch(FetchItem *Itm)
	100	{
	101	stringstream ss;
	102	struct stat SBuf;
	103	struct curl_slist *headers=NULL;
714ee06c	104	char curl_errorstr[CURL_ERROR_SIZE];
4c499611	105	long curl_responsecode;
c769cd6f MV	106	URI Uri = Itm->Uri;
c769cd6f MV	107	string remotehost = Uri.Host;
d546f98d MV	108
d546f98d MV	109	// TODO:
d546f98d MV	110	// - http::Pipeline-Depth
	111	// - error checking/reporting
	112	// - more debug options? (CURLOPT_DEBUGFUNCTION?)
	113
5820530d	114	curl_easy_reset(curl);
d546f98d MV	115	SetupProxy();
d546f98d MV	116
1de1f703	117	maybe_add_auth (Uri, _config->FindFile("Dir::Etc::netrc"));
592b7800	118
d546f98d	119	// callbacks
01fc8930	120	curl_easy_setopt(curl, CURLOPT_URL, static_cast<string>(Uri).c_str());
d546f98d MV	121	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);
	122	curl_easy_setopt(curl, CURLOPT_WRITEDATA, this);
	123	curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, progress_callback);
	124	curl_easy_setopt(curl, CURLOPT_PROGRESSDATA, this);
	125	curl_easy_setopt(curl, CURLOPT_NOPROGRESS, false);
	126	curl_easy_setopt(curl, CURLOPT_FAILONERROR, true);
5820530d	127	curl_easy_setopt(curl, CURLOPT_FILETIME, true);
d546f98d	128
c769cd6f MV	129	// SSL parameters are set by default to the common (non mirror-specific) value
	130	// if available (or a default one) and gets overload by mirror-specific ones.
	131
	132	// File containing the list of trusted CA.
	133	string cainfo = _config->Find("Acquire::https::CaInfo","");
	134	string knob = "Acquire::https::"+remotehost+"::CaInfo";
	135	cainfo = _config->Find(knob.c_str(),cainfo.c_str());
	136	if(cainfo != "")
	137	curl_easy_setopt(curl, CURLOPT_CAINFO,cainfo.c_str());
	138
	139	// Check server certificate against previous CA list ...
	140	bool peer_verify = _config->FindB("Acquire::https::Verify-Peer",true);
	141	knob = "Acquire::https::" + remotehost + "::Verify-Peer";
	142	peer_verify = _config->FindB(knob.c_str(), peer_verify);
714ee06c MV	143	curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, peer_verify);
714ee06c MV	144
c769cd6f MV	145	// ... and hostname against cert CN or subjectAltName
	146	int default_verify = 2;
	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);
	150	if (!verify)
	151	default_verify = 0;
	152	curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, verify);
	153
	154	// For client authentication, certificate file ...
714ee06c	155	string pem = _config->Find("Acquire::https::SslCert","");
c769cd6f MV	156	knob = "Acquire::https::"+remotehost+"::SslCert";
c769cd6f MV	157	pem = _config->Find(knob.c_str(),pem.c_str());
714ee06c MV	158	if(pem != "")
714ee06c MV	159	curl_easy_setopt(curl, CURLOPT_SSLCERT, pem.c_str());
c769cd6f MV	160
	161	// ... and associated key.
	162	string key = _config->Find("Acquire::https::SslKey","");
	163	knob = "Acquire::https::"+remotehost+"::SslKey";
	164	key = _config->Find(knob.c_str(),key.c_str());
	165	if(key != "")
	166	curl_easy_setopt(curl, CURLOPT_SSLKEY, key.c_str());
	167
	168	// Allow forcing SSL version to SSLv3 or TLSv1 (SSLv2 is not
	169	// supported by GnuTLS).
	170	long final_version = CURL_SSLVERSION_DEFAULT;
	171	string sslversion = _config->Find("Acquire::https::SslForceVersion","");
	172	knob = "Acquire::https::"+remotehost+"::SslForceVersion";
	173	sslversion = _config->Find(knob.c_str(),sslversion.c_str());
	174	if(sslversion == "TLSv1")
	175	final_version = CURL_SSLVERSION_TLSv1;
	176	else if(sslversion == "SSLv3")
	177	final_version = CURL_SSLVERSION_SSLv3;
	178	curl_easy_setopt(curl, CURLOPT_SSLVERSION, final_version);
d546f98d MV	179
d546f98d MV	180	// cache-control
b9e9a44b DK	181	if(_config->FindB("Acquire::https::No-Cache",
b9e9a44b DK	182	_config->FindB("Acquire::http::No-Cache",false)) == false)
d546f98d MV	183	{
d546f98d MV	184	// cache enabled
b9e9a44b DK	185	if (_config->FindB("Acquire::https::No-Store",
b9e9a44b DK	186	_config->FindB("Acquire::http::No-Store",false)) == true)
d546f98d	187	headers = curl_slist_append(headers,"Cache-Control: no-store");
b9e9a44b DK	188	ioprintf(ss, "Cache-Control: max-age=%u", _config->FindI("Acquire::https::Max-Age",
b9e9a44b DK	189	_config->FindI("Acquire::http::Max-Age",0)));
d546f98d MV	190	headers = curl_slist_append(headers, ss.str().c_str());
	191	} else {
	192	// cache disabled by user
	193	headers = curl_slist_append(headers, "Cache-Control: no-cache");
	194	headers = curl_slist_append(headers, "Pragma: no-cache");
	195	}
	196	curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
	197
d546f98d	198	// speed limit
b9e9a44b DK	199	int dlLimit = _config->FindI("Acquire::https::Dl-Limit",
b9e9a44b DK	200	_config->FindI("Acquire::http::Dl-Limit",0))*1024;
d546f98d MV	201	if (dlLimit > 0)
	202	curl_easy_setopt(curl, CURLOPT_MAX_RECV_SPEED_LARGE, dlLimit);
	203
	204	// set header
9f542bae DK	205	curl_easy_setopt(curl, CURLOPT_USERAGENT,
	206	_config->Find("Acquire::https::User-Agent",
	207	_config->Find("Acquire::http::User-Agent",
e4c2981b	208	"Debian APT-CURL/1.0 ("VERSION")").c_str()).c_str());
d546f98d	209
cc615257	210	// set timeout
b9e9a44b DK	211	int timeout = _config->FindI("Acquire::https::Timeout",
b9e9a44b DK	212	_config->FindI("Acquire::http::Timeout",120));
cc615257	213	curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, timeout);
43cf55db	214	//set really low lowspeed timeout (see #497983)
5085e660	215	curl_easy_setopt(curl, CURLOPT_LOW_SPEED_LIMIT, DL_MIN_SPEED);
43cf55db	216	curl_easy_setopt(curl, CURLOPT_LOW_SPEED_TIME, timeout);
cc615257	217
668ce84d	218	// set redirect options and default to 10 redirects
b9e9a44b DK	219	bool AllowRedirect = _config->FindB("Acquire::https::AllowRedirect",
b9e9a44b DK	220	_config->FindB("Acquire::http::AllowRedirect",true));
668ce84d MV	221	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, AllowRedirect);
	222	curl_easy_setopt(curl, CURLOPT_MAXREDIRS, 10);
	223
d546f98d	224	// debug
714ee06c	225	if(_config->FindB("Debug::Acquire::https", false))
d546f98d MV	226	curl_easy_setopt(curl, CURLOPT_VERBOSE, true);
d546f98d MV	227
714ee06c MV	228	// error handling
	229	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, curl_errorstr);
	230
d6039f9e	231	// if we have the file send an if-range query with a range header
4c499611 MV	232	if (stat(Itm->DestFile.c_str(),&SBuf) >= 0 && SBuf.st_size > 0)
	233	{
	234	char Buf[1000];
	235	sprintf(Buf,"Range: bytes=%li-\r\nIf-Range: %s\r\n",
	236	(long)SBuf.st_size - 1,
	237	TimeRFC1123(SBuf.st_mtime).c_str());
	238	headers = curl_slist_append(headers, Buf);
d6039f9e MV	239	}
	240	else if(Itm->LastModified > 0)
	241	{
	242	curl_easy_setopt(curl, CURLOPT_TIMECONDITION, CURL_TIMECOND_IFMODSINCE);
	243	curl_easy_setopt(curl, CURLOPT_TIMEVALUE, Itm->LastModified);
4c499611	244	}
d546f98d MV	245
	246	// go for it - if the file exists, append on it
	247	File = new FileFd(Itm->DestFile, FileFd::WriteAny);
d6039f9e MV	248	if (File->Size() > 0)
d6039f9e MV	249	File->Seek(File->Size() - 1);
d546f98d MV	250
	251	// keep apt updated
	252	Res.Filename = Itm->DestFile;
	253
	254	// get it!
	255	CURLcode success = curl_easy_perform(curl);
4c499611	256	curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &curl_responsecode);
d546f98d	257
5820530d OS	258	long curl_servdate;
	259	curl_easy_getinfo(curl, CURLINFO_FILETIME, &curl_servdate);
	260
d546f98d	261	// cleanup
4c499611 MV	262	if(success != 0)
4c499611 MV	263	{
9b5d79ec	264	_error->Error("%s", curl_errorstr);
d546f98d MV	265	Fail();
	266	return true;
	267	}
4c499611	268	File->Close();
d546f98d	269
5820530d OS	270	// Timestamp
	271	struct utimbuf UBuf;
	272	if (curl_servdate != -1) {
	273	UBuf.actime = curl_servdate;
	274	UBuf.modtime = curl_servdate;
	275	utime(File->Name().c_str(),&UBuf);
	276	}
	277
d546f98d MV	278	// check the downloaded result
	279	struct stat Buf;
	280	if (stat(File->Name().c_str(),&Buf) == 0)
	281	{
d546f98d MV	282	Res.Filename = File->Name();
	283	Res.LastModified = Buf.st_mtime;
	284	Res.IMSHit = false;
4c499611	285	if (curl_responsecode == 304)
714ee06c	286	{
d6039f9e	287	unlink(File->Name().c_str());
d546f98d	288	Res.IMSHit = true;
714ee06c	289	Res.LastModified = Itm->LastModified;
d6039f9e MV	290	Res.Size = 0;
	291	URIDone(Res);
	292	return true;
714ee06c	293	}
d6039f9e	294	Res.Size = Buf.st_size;
d546f98d MV	295	}
	296
	297	// take hashes
	298	Hashes Hash;
	299	FileFd Fd(Res.Filename, FileFd::ReadOnly);
	300	Hash.AddFD(Fd.Fd(), Fd.Size());
	301	Res.TakeHashes(Hash);
	302
	303	// keep apt updated
	304	URIDone(Res);
	305
	306	// cleanup
d546f98d MV	307	Res.Size = 0;
	308	delete File;
	309	curl_slist_free_all(headers);
	310
	311	return true;
	312	};
	313
	314	int main()
	315	{
	316	setlocale(LC_ALL, "");
	317
	318	HttpsMethod Mth;
	319	curl_global_init(CURL_GLOBAL_SSL) ;
	320
	321	return Mth.Run();
	322	}
	323
	324