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//-*- 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 <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();
// callbacks
curl_easy_setopt(curl, CURLOPT_URL, Itm->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);
curl_easy_setopt(curl, CURLOPT_NETRC, CURL_NETRC_OPTIONAL);
// 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_TIMEOUT, timeout);
curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, 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();
}