Add a more or less useful README file for everything related to MultiArch

[apt.git] / methods / https.cc

diff --git a/methods/https.cc b/methods/https.cc
index d48ac97fb2df5d6d8434ff946ad619a4055b6df2..4daa04e323a49d28fb8001983e03c78318f81c3a 100644 (file)
--- a/methods/https.cc
+++ b/methods/https.cc
@@ -1,4 +1,4 @@
-// -*- mode: cpp; mode: fold -*-
+//-*- mode: cpp; mode: fold -*-

 // Description                                                         /*{{{*/
 // $Id: http.cc,v 1.59 2004/05/08 19:42:35 mdz Exp $
 /* ######################################################################
 // Description                                                         /*{{{*/
 // $Id: http.cc,v 1.59 2004/05/08 19:42:35 mdz Exp $
 /* ######################################################################


@@ -56,47 +56,38 @@ HttpsMethod::progress_callback(void *clientp, double dltotal, double dlnow,
    return 0;
 }
 
    return 0;
 }
 

-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)
-   {
-      if (CheckDomainList(ServerName.Host,getenv("no_proxy")) == true)
-        Proxy = "";
-   }
-   
-   // Determine what host and port to use based on the proxy settings
-   string Host;   
-   if (Proxy.empty() == true || Proxy.Host.empty() == true)
-   {
-   }
-   else
-   {
-      if (Proxy.Port != 0)
-        curl_easy_setopt(curl, CURLOPT_PROXYPORT, Proxy.Port);
-      curl_easy_setopt(curl, CURLOPT_PROXY, Proxy.Host.c_str());
-   }
-}
-
-
+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
 // HttpsMethod::Fetch - Fetch an item                                  /*{{{*/
 // ---------------------------------------------------------------------
 /* This adds an item to the pipeline. We keep the pipeline at a fixed


@@ -107,13 +98,16 @@ bool HttpsMethod::Fetch(FetchItem *Itm)
    struct stat SBuf;
    struct curl_slist *headers=NULL;  
    char curl_errorstr[CURL_ERROR_SIZE];
    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:
 
    // TODO:

-   //       - http::Timeout

    //       - http::Pipeline-Depth
    //       - error checking/reporting
    //       - more debug options? (CURLOPT_DEBUGFUNCTION?)
 
    //       - http::Pipeline-Depth
    //       - error checking/reporting
    //       - more debug options? (CURLOPT_DEBUGFUNCTION?)
 

+   curl_easy_reset(curl);

    SetupProxy();
 
    // callbacks
    SetupProxy();
 
    // callbacks


@@ -124,32 +118,70 @@ bool HttpsMethod::Fetch(FetchItem *Itm)
    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_PROGRESSDATA, this);
    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);
+   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);
 
    curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, peer_verify);
 

-   // sslcert file
+   // ... 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","");
    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());
    if(pem != "")
       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 != "")
+      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
 
    // 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
    {
       // 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");
         headers = curl_slist_append(headers,"Cache-Control: no-store");

-      ioprintf(ss, "Cache-Control: max-age=%u", _config->FindI("Acquire::http::Max-Age",0));
+      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, ss.str().c_str());
    } else {
       // cache disabled by user


@@ -158,17 +190,29 @@ bool HttpsMethod::Fetch(FetchItem *Itm)
    }
    curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
 
    }
    curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
 

-   // set time values
-   curl_easy_setopt(curl, CURLOPT_TIMECONDITION, CURL_TIMECOND_IFMODSINCE);
-   curl_easy_setopt(curl, CURLOPT_TIMEVALUE, Itm->LastModified);
-

    // speed limit
    // speed limit

-   int dlLimit = _config->FindI("Acquire::http::Dl-Limit",0)*1024;
+   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
    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 ("VERSION")")).c_str());
+
+   // 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))
 
    // debug
    if(_config->FindB("Debug::Acquire::https", false))


@@ -177,44 +221,70 @@ bool HttpsMethod::Fetch(FetchItem *Itm)
    // error handling
    curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, curl_errorstr);
 
    // error handling
    curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, curl_errorstr);
 

-   // In this case we send an if-range query with a range header
-  if (stat(Itm->DestFile.c_str(),&SBuf) >= 0 && SBuf.st_size > 0)
-     curl_easy_setopt(curl, CURLOPT_RESUME_FROM, (long)SBuf.st_size);
+   // 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);
 
    // go for it - if the file exists, append on it
    File = new FileFd(Itm->DestFile, FileFd::WriteAny);

-   File->Seek(File->Size());
+   if (File->Size() > 0)
+      File->Seek(File->Size() - 1);

    
    // keep apt updated
    Res.Filename = Itm->DestFile;
 
    // get it!
    CURLcode success = curl_easy_perform(curl);
    
    // 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
 
    // cleanup

-   if(success != 0) {
-      _error->Error(curl_errorstr);
+   if(success != 0) 
+   {
+      _error->Error("%s", curl_errorstr);

       Fail();
       return true;
    }
       Fail();
       return true;
    }

+   File->Close();

 
 

-   if (Res.Size == 0)
-      Res.Size = File->Size();
+   // 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)
    {
 
    // check the downloaded result
    struct stat Buf;
    if (stat(File->Name().c_str(),&Buf) == 0)
    {

-      Res.Size = Buf.st_size;

       Res.Filename = File->Name();
       Res.LastModified = Buf.st_mtime;
       Res.IMSHit = false;
       Res.Filename = File->Name();
       Res.LastModified = Buf.st_mtime;
       Res.IMSHit = false;

-      if (Itm->LastModified != 0 && Buf.st_mtime >= Itm->LastModified)
+      if (curl_responsecode == 304)

       {
       {

+        unlink(File->Name().c_str());

         Res.IMSHit = true;
         Res.LastModified = Itm->LastModified;
         Res.IMSHit = true;
         Res.LastModified = Itm->LastModified;

+        Res.Size = 0;
+        URIDone(Res);
+        return true;

       }
       }

+      Res.Size = Buf.st_size;

    }
 
    // take hashes
    }
 
    // take hashes


@@ -227,7 +297,6 @@ bool HttpsMethod::Fetch(FetchItem *Itm)
    URIDone(Res);
 
    // cleanup
    URIDone(Res);
 
    // cleanup

-   File->Close();

    Res.Size = 0;
    delete File;
    curl_slist_free_all(headers);
    Res.Size = 0;
    delete File;
    curl_slist_free_all(headers);