-// -*- mode: cpp; mode: fold -*-
+//-*- 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.
+ HTTPS Acquire Method - This is the HTTPS acquire 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 <apt-pkg/macros.h>
+#include <apt-pkg/strutl.h>
+#include <apt-pkg/proxy.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 <ctype.h>
+#include <stdlib.h>
-#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->Res.Size == 0)
+ me->URIStart(me->Res);
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)
+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);
+ me->Res.Size = (unsigned long long)dltotal;
}
return 0;
}
-void HttpsMethod::SetupProxy()
+// 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;
// Determine the proxy setting
- if (getenv("http_proxy") == 0)
- {
- string DefProxy = _config->Find("Acquire::http::Proxy");
- string SpecificProxy = _config->Find("Acquire::http::Proxy::" + ServerName.Host);
- if (SpecificProxy.empty() == false)
- {
- if (SpecificProxy == "DIRECT")
- Proxy = "";
- else
- Proxy = SpecificProxy;
- }
- else
- Proxy = DefProxy;
- }
-
- // Parse no_proxy, a , separated list of domains
- if (getenv("no_proxy") != 0)
+ AutoDetectProxy(ServerName);
+
+ // 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)
{
- if (CheckDomainList(ServerName.Host,getenv("no_proxy")) == true)
- Proxy = "";
+ // 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
- string Host;
- if (Proxy.empty() == true || Proxy.Host.empty() == true)
- {
- }
- else
+ if (UseProxy.empty() == false)
{
- if (Proxy.Port != 0)
+ 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)
{
- 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::Timeout
// - 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, Itm->Uri.c_str());
+ 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);
+ // options
curl_easy_setopt(curl, CURLOPT_NOPROGRESS, false);
- curl_easy_setopt(curl, CURLOPT_FAILONERROR, true);
-
- // FIXME: https: offer various options of verification
- bool peer_verify = _config->FindB("Acquire::https::Verify-Peer", false);
+ curl_easy_setopt(curl, CURLOPT_FILETIME, true);
+ // only allow curl to handle https, not the other stuff it supports
+ curl_easy_setopt(curl, CURLOPT_PROTOCOLS, CURLPROTO_HTTPS);
+ curl_easy_setopt(curl, CURLOPT_REDIR_PROTOCOLS, CURLPROTO_HTTPS);
+
+ // 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);
- // sslcert file
+ // ... 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","");
- if(pem != "")
+ 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());
-
- // CA-Dir
- string certdir = _config->Find("Acquire::https::CaPath","");
- if(certdir != "")
- curl_easy_setopt(curl, CURLOPT_CAPATH, certdir.c_str());
-
- // Server-verify
- int verify = _config->FindI("Acquire::https::Verify-Host",2);
- curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, verify);
+
+ // ... 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::http::No-Cache",false) == false)
+ if(_config->FindB("Acquire::https::No-Cache",
+ _config->FindB("Acquire::http::No-Cache",false)) == false)
{
// cache enabled
- if (_config->FindB("Acquire::http::No-Store",false) == true)
+ 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::http::Max-Age",0));
+ 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
}
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
- // set time values
- if(Itm->LastModified > 0)
- {
- curl_easy_setopt(curl, CURLOPT_TIMECONDITION, CURL_TIMECOND_IFMODSINCE);
- curl_easy_setopt(curl, CURLOPT_TIMEVALUE, Itm->LastModified);
- }
-
// speed limit
- int dlLimit = _config->FindI("Acquire::http::Dl-Limit",0)*1024;
+ 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,"Debian APT-CURL/1.0 ("VERSION")");
+ 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);
- // In this case we send an if-range query with a range header
+ // If we ask for uncompressed files servers might respond with content-
+ // negotiation 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-\r\nIf-Range: %s\r\n",
- (long)SBuf.st_size - 1,
- TimeRFC1123(SBuf.st_mtime).c_str());
- headers = curl_slist_append(headers, Buf);
+ std::string Buf;
+ strprintf(Buf, "Range: bytes=%lli-", (long long) SBuf.st_size);
+ headers = curl_slist_append(headers, Buf.c_str());
+ strprintf(Buf, "If-Range: %s", TimeRFC1123(SBuf.st_mtime).c_str());
+ headers = curl_slist_append(headers, Buf.c_str());
+ }
+ 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);
- File->Seek(File->Size());
-
+ Server = new HttpsServerState(Itm->Uri, this);
+
// keep apt updated
Res.Filename = Itm->DestFile;
// get it!
CURLcode success = curl_easy_perform(curl);
- curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &curl_responsecode);
+
+ // 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)
+ if (success != 0)
{
+ _error->Error("%s", curl_errorstr);
unlink(File->Name().c_str());
- _error->Error(curl_errorstr);
- Fail();
+ 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;
}
- File->Close();
+ Res.IMSHit = false;
- if (Res.Size == 0)
- Res.Size = File->Size();
+ 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;
+ }
- // check the downloaded result
- struct stat Buf;
- if (stat(File->Name().c_str(),&Buf) == 0)
+ struct stat resultStat;
+ if (unlikely(stat(File->Name().c_str(), &resultStat) != 0))
{
- Res.Size = Buf.st_size;
- Res.Filename = File->Name();
- Res.LastModified = Buf.st_mtime;
- Res.IMSHit = false;
- if (curl_responsecode == 304)
- {
- Res.IMSHit = true;
- Res.LastModified = Itm->LastModified;
- }
+ _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 timeval times[2];
+ times[0].tv_sec = Res.LastModified;
+ times[1].tv_sec = Res.LastModified;
+ times[0].tv_usec = times[1].tv_usec = 0;
+ utimes(File->Name().c_str(), times);
+ }
+ else
+ Res.LastModified = resultStat.st_mtime;
// take hashes
Hashes Hash;
FileFd Fd(Res.Filename, FileFd::ReadOnly);
- Hash.AddFD(Fd.Fd(), Fd.Size());
+ 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()
{
return Mth.Run();
}
-
projects / apt.git / blobdiff