// $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::write_data(void *buffer, size_t size, size_t nmemb, void *userp)
+struct APT_HIDDEN CURLUserPointer {
+ HttpsMethod * const https;
+ HttpsMethod::FetchResult * const Res;
+ HttpsMethod::FetchItem const * const Itm;
+ CURLUserPointer(HttpsMethod * const https, HttpsMethod::FetchResult * const Res,
+ HttpsMethod::FetchItem const * const Itm) : https(https), Res(Res), Itm(Itm) {}
+};
+
+size_t
+HttpsMethod::parse_header(void *buffer, size_t size, size_t nmemb, void *userp)
{
- HttpsMethod *me = (HttpsMethod *)userp;
+ size_t len = size * nmemb;
+ CURLUserPointer *me = static_cast<CURLUserPointer *>(userp);
+ std::string line((char*) buffer, len);
+ for (--len; len > 0; --len)
+ if (isspace_ascii(line[len]) == 0)
+ {
+ ++len;
+ break;
+ }
+ line.erase(len);
- if(me->File->Write(buffer, size*nmemb) != true)
- return false;
+ if (line.empty() == true)
+ {
+ if (me->https->Server->Result != 416 && me->https->Server->StartPos != 0)
+ ;
+ else if (me->https->Server->Result == 416)
+ {
+ bool partialHit = false;
+ if (me->Itm->ExpectedHashes.usable() == true)
+ {
+ Hashes resultHashes(me->Itm->ExpectedHashes);
+ FileFd file(me->Itm->DestFile, FileFd::ReadOnly);
+ me->https->Server->TotalFileSize = file.FileSize();
+ me->https->Server->Date = file.ModificationTime();
+ resultHashes.AddFD(file);
+ HashStringList const hashList = resultHashes.GetHashStringList();
+ partialHit = (me->Itm->ExpectedHashes == hashList);
+ }
+ else if (me->https->Server->Result == 416 && me->https->Server->TotalFileSize == me->https->File->FileSize())
+ partialHit = true;
+
+ if (partialHit == true)
+ {
+ me->https->Server->Result = 200;
+ me->https->Server->StartPos = me->https->Server->TotalFileSize;
+ // the actual size is not important for https as curl will deal with it
+ // by itself and e.g. doesn't bother us with transport-encoding…
+ me->https->Server->JunkSize = std::numeric_limits<unsigned long long>::max();
+ }
+ else
+ me->https->Server->StartPos = 0;
+ }
+ else
+ me->https->Server->StartPos = 0;
+
+ me->Res->LastModified = me->https->Server->Date;
+ me->Res->Size = me->https->Server->TotalFileSize;
+ me->Res->ResumePoint = me->https->Server->StartPos;
+
+ // we expect valid data, so tell our caller we get the file now
+ if (me->https->Server->Result >= 200 && me->https->Server->Result < 300)
+ {
+ if (me->https->Server->JunkSize == 0 && me->Res->Size != 0 && me->Res->Size > me->Res->ResumePoint)
+ me->https->URIStart(*me->Res);
+ if (me->https->Server->AddPartialFileToHashes(*(me->https->File)) == false)
+ return 0;
+ }
+ }
+ else if (me->https->Server->HeaderLine(line) == false)
+ return 0;
return size*nmemb;
}
-int
-HttpsMethod::progress_callback(void *clientp, double dltotal, double dlnow,
- double ultotal, double ulnow)
+size_t
+HttpsMethod::write_data(void *buffer, size_t size, size_t nmemb, void *userp)
{
- HttpsMethod *me = (HttpsMethod *)clientp;
- if(dltotal > 0 && me->Res.Size == 0) {
- me->Res.Size = (unsigned long)dltotal;
- me->URIStart(me->Res);
+ HttpsMethod *me = static_cast<HttpsMethod *>(userp);
+ size_t buffer_size = size * nmemb;
+ // we don't need to count the junk here, just drop anything we get as
+ // we don't always know how long it would be, e.g. in chunked encoding.
+ if (me->Server->JunkSize != 0)
+ return buffer_size;
+
+ if(me->File->Write(buffer, buffer_size) != true)
+ return 0;
+
+ if(me->Queue->MaximumSize > 0)
+ {
+ unsigned long long const TotalWritten = me->File->Tell();
+ if (TotalWritten > me->Queue->MaximumSize)
+ {
+ me->SetFailReason("MaximumSizeExceeded");
+ _error->Error("Writing more data than expected (%llu > %llu)",
+ TotalWritten, me->Queue->MaximumSize);
+ return 0;
+ }
}
- return 0;
+
+ if (me->Server->GetHashes()->Add((unsigned char const * const)buffer, buffer_size) == false)
+ return 0;
+
+ return buffer_size;
+}
+
+// HttpsServerState::HttpsServerState - Constructor /*{{{*/
+HttpsServerState::HttpsServerState(URI Srv,HttpsMethod * Owner) : ServerState(Srv, Owner), Hash(NULL)
+{
+ TimeOut = _config->FindI("Acquire::https::Timeout",TimeOut);
+ Reset();
+}
+ /*}}}*/
+bool HttpsServerState::InitHashes(HashStringList const &ExpectedHashes) /*{{{*/
+{
+ delete Hash;
+ Hash = new Hashes(ExpectedHashes);
+ return true;
+}
+ /*}}}*/
+APT_PURE Hashes * HttpsServerState::GetHashes() /*{{{*/
+{
+ return Hash;
}
+ /*}}}*/
-void HttpsMethod::SetupProxy() /*{{{*/
+void HttpsMethod::SetupProxy() /*{{{*/
{
URI ServerName = Queue->Uri;
+ // Determine the proxy setting
+ 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 == "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;
+
+ if (UseProxy.empty() == true)
{
- // 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");
+ 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;
}
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 /*{{{*/
depth. */
bool HttpsMethod::Fetch(FetchItem *Itm)
{
- stringstream ss;
struct stat SBuf;
- struct curl_slist *headers=NULL;
+ struct curl_slist *headers=NULL;
char curl_errorstr[CURL_ERROR_SIZE];
- long curl_responsecode;
URI Uri = Itm->Uri;
string remotehost = Uri.Host;
maybe_add_auth (Uri, _config->FindFile("Dir::Etc::netrc"));
+ FetchResult Res;
+ CURLUserPointer userp(this, &Res, Itm);
// callbacks
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, &userp);
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);
+ // options
+ curl_easy_setopt(curl, CURLOPT_NOPROGRESS, true);
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.
string cainfo = _config->Find("Acquire::https::CaInfo","");
string knob = "Acquire::https::"+remotehost+"::CaInfo";
cainfo = _config->Find(knob.c_str(),cainfo.c_str());
- if(cainfo != "")
+ if(cainfo.empty() == false)
curl_easy_setopt(curl, CURLOPT_CAINFO,cainfo.c_str());
// Check server certificate against previous CA list ...
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);
+ 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","");
knob = "Acquire::https::"+remotehost+"::SslCert";
pem = _config->Find(knob.c_str(),pem.c_str());
- if(pem != "")
+ if(pem.empty() == false)
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 != "")
+ if(key.empty() == false)
curl_easy_setopt(curl, CURLOPT_SSLKEY, key.c_str());
// Allow forcing SSL version to SSLv3 or TLSv1 (SSLv2 is not
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::https::No-Cache",
_config->FindB("Acquire::http::No-Cache",false)) == false)
if (_config->FindB("Acquire::https::No-Store",
_config->FindB("Acquire::http::No-Store",false)) == true)
headers = curl_slist_append(headers,"Cache-Control: no-store");
+ 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());
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
// speed limit
- int dlLimit = _config->FindI("Acquire::https::Dl-Limit",
+ 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);
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());
+ "Debian APT-CURL/1.0 (" PACKAGE_VERSION ")").c_str()).c_str());
// set timeout
- int timeout = _config->FindI("Acquire::https::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_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))
+ if (Debug == true)
curl_easy_setopt(curl, CURLOPT_VERBOSE, true);
// error handling
+ curl_errorstr[0] = '\0';
curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, curl_errorstr);
+ // 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);
// 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);
-
+ Server = CreateServerState(Itm->Uri);
+ if (Server->InitHashes(Itm->ExpectedHashes) == false)
+ return false;
+
// 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);
+ // 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 != CURLE_OK)
+ {
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wswitch"
+ switch (success)
+ {
+ case CURLE_COULDNT_RESOLVE_PROXY:
+ case CURLE_COULDNT_RESOLVE_HOST:
+ SetFailReason("ResolveFailure");
+ break;
+ case CURLE_COULDNT_CONNECT:
+ SetFailReason("ConnectionRefused");
+ break;
+ case CURLE_OPERATION_TIMEDOUT:
+ SetFailReason("Timeout");
+ break;
+ }
+#pragma GCC diagnostic pop
+ return _error->Error("%s", curl_errorstr);
+ }
+
+ // server says file not modified
+ if (Server->Result == 304 || curl_condition_unmet == 1)
{
- _error->Error("%s", curl_errorstr);
- Fail();
+ RemoveFile("https", File->Name());
+ Res.IMSHit = true;
+ Res.LastModified = Itm->LastModified;
+ Res.Size = 0;
+ URIDone(Res);
return true;
}
- File->Close();
+ Res.IMSHit = false;
- // Timestamp
- struct utimbuf UBuf;
- if (curl_servdate != -1) {
- UBuf.actime = curl_servdate;
- UBuf.modtime = curl_servdate;
- utime(File->Name().c_str(),&UBuf);
+ 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("%i %s", Server->Result, Server->Code);
+ // unlink, no need keep 401/404 page content in partial/
+ RemoveFile("https", File->Name());
+ return false;
}
- // check the downloaded result
- struct stat Buf;
- if (stat(File->Name().c_str(),&Buf) == 0)
+ // invalid range-request
+ if (Server->Result == 416)
{
- 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;
+ RemoveFile("https", File->Name());
+ delete File;
+ Redirect(Itm->Uri);
+ return true;
+ }
+
+ struct stat resultStat;
+ if (unlikely(stat(File->Name().c_str(), &resultStat) != 0))
+ {
+ _error->Errno("stat", "Unable to access file %s", File->Name().c_str());
+ return false;
+ }
+ Res.Size = resultStat.st_size;
+
+ // 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());
- Res.TakeHashes(Hash);
-
+ Res.TakeHashes(*(Server->GetHashes()));
+
// keep apt updated
URIDone(Res);
// cleanup
- Res.Size = 0;
delete File;
- curl_slist_free_all(headers);
return true;
-};
+}
+ /*}}}*/
+// HttpsMethod::Configuration - Handle a configuration message /*{{{*/
+bool HttpsMethod::Configuration(string Message)
+{
+ if (ServerMethod::Configuration(Message) == false)
+ return false;
+
+ AllowRedirect = _config->FindB("Acquire::https::AllowRedirect",
+ _config->FindB("Acquire::http::AllowRedirect", true));
+ Debug = _config->FindB("Debug::Acquire::https",false);
+
+ return true;
+}
+ /*}}}*/
+std::unique_ptr<ServerState> HttpsMethod::CreateServerState(URI const &uri)/*{{{*/
+{
+ return std::unique_ptr<ServerState>(new HttpsServerState(uri, this));
+}
+ /*}}}*/
int main()
{
return Mth.Run();
}
-
projects / apt.git / blobdiff