// $Id: http.cc,v 1.59 2004/05/08 19:42:35 mdz Exp $
/* ######################################################################
- HTTP Acquire Method - This is the HTTP aquire method for APT.
+ HTTP Acquire Method - This is the HTTP acquire method for APT.
It uses HTTP/1.1 and many of the fancy options there-in, such as
pipelining, range, if-range and so on.
#include <config.h>
#include <apt-pkg/fileutl.h>
-#include <apt-pkg/acquire-method.h>
#include <apt-pkg/configuration.h>
#include <apt-pkg/error.h>
#include <apt-pkg/hashes.h>
#include <apt-pkg/netrc.h>
+#include <apt-pkg/strutl.h>
+#include <apt-pkg/proxy.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <sys/select.h>
+#include <cstring>
#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 <climits>
#include <iostream>
-#include <map>
-
-// Internet stuff
-#include <netdb.h>
+#include <sstream>
#include "config.h"
#include "connect.h"
-#include "rfc2553emu.h"
#include "http.h"
#include <apti18n.h>
unsigned long long CircleBuf::BwTickReadData=0;
struct timeval CircleBuf::BwReadTick={0,0};
const unsigned int CircleBuf::BW_HZ=10;
-
+
// CircleBuf::CircleBuf - Circular input buffer /*{{{*/
// ---------------------------------------------------------------------
/* */
-CircleBuf::CircleBuf(unsigned long long Size) : Size(Size), Hash(0)
+CircleBuf::CircleBuf(unsigned long long Size)
+ : Size(Size), Hash(NULL), TotalWriten(0)
{
Buf = new unsigned char[Size];
Reset();
InP = 0;
OutP = 0;
StrPos = 0;
+ TotalWriten = 0;
MaxGet = (unsigned long long)-1;
OutQueue = string();
- if (Hash != 0)
+ if (Hash != NULL)
{
delete Hash;
- Hash = new Hashes;
- }
-};
+ Hash = NULL;
+ }
+}
/*}}}*/
// CircleBuf::Read - Read from a FD into the circular buffer /*{{{*/
// ---------------------------------------------------------------------
is non-blocking.. */
bool CircleBuf::Read(int Fd)
{
- unsigned long long BwReadMax;
-
while (1)
{
// Woops, buffer is full
return true;
// what's left to read in this tick
- BwReadMax = CircleBuf::BwReadLimit/BW_HZ;
+ unsigned long long const BwReadMax = CircleBuf::BwReadLimit/BW_HZ;
if(CircleBuf::BwReadLimit) {
struct timeval now;
return false;
}
+
+ TotalWriten += Res;
- if (Hash != 0)
+ if (Hash != NULL)
Hash->Add(Buf + (OutP%Size),Res);
OutP += Res;
Persistent = true;
// Determine the proxy setting
+ AutoDetectProxy(ServerName);
string SpecificProxy = _config->Find("Acquire::http::Proxy::" + ServerName.Host);
if (!SpecificProxy.empty())
{
Port = ServerName.Port;
Host = ServerName.Host;
}
+ else if (Proxy.Access != "http")
+ return _error->Error("Unsupported proxy configured: %s", URI::SiteOnly(Proxy).c_str());
else
{
if (Proxy.Port != 0)
{
/* Closes encoding is used when the server did not specify a size, the
loss of the connection means we are done */
- if (Encoding == Closes)
+ if (JunkSize != 0)
+ In.Limit(JunkSize);
+ else if (DownloadSize != 0)
+ In.Limit(DownloadSize);
+ else if (Persistent == false)
In.Limit(-1);
- else
- In.Limit(Size - StartPos);
// Just transfer the whole block.
do
return Owner->Flush() && !_error->PendingError();
}
/*}}}*/
+bool HttpServerState::RunDataToDevNull() /*{{{*/
+{
+ FileFd DevNull("/dev/null", FileFd::WriteOnly);
+ return RunData(&DevNull);
+}
+ /*}}}*/
bool HttpServerState::ReadHeaderLines(std::string &Data) /*{{{*/
{
return In.WriteTillEl(Data);
return Out.Read(Data);
}
/*}}}*/
-bool HttpServerState::IsOpen() /*{{{*/
+APT_PURE bool HttpServerState::IsOpen() /*{{{*/
{
return (ServerFd != -1);
}
/*}}}*/
-bool HttpServerState::InitHashes(FileFd &File) /*{{{*/
+bool HttpServerState::InitHashes(HashStringList const &ExpectedHashes) /*{{{*/
{
delete In.Hash;
- In.Hash = new Hashes;
-
- // Set the expected size and read file for the hashes
- if (StartPos >= 0)
- {
- File.Truncate(StartPos);
-
- return In.Hash->AddFD(File, StartPos);
- }
+ In.Hash = new Hashes(ExpectedHashes);
return true;
}
/*}}}*/
-Hashes * HttpServerState::GetHashes() /*{{{*/
+
+APT_PURE Hashes * HttpServerState::GetHashes() /*{{{*/
{
return In.Hash;
}
/*}}}*/
// HttpServerState::Die - The server has closed the connection. /*{{{*/
-bool HttpServerState::Die(FileFd &File)
+bool HttpServerState::Die(FileFd * const File)
{
unsigned int LErrno = errno;
// Dump the buffer to the file
if (State == ServerState::Data)
{
+ if (File == nullptr)
+ return true;
// on GNU/kFreeBSD, apt dies on /dev/null because non-blocking
// can't be set
- if (File.Name() != "/dev/null")
- SetNonBlock(File.Fd(),false);
+ if (File->Name() != "/dev/null")
+ SetNonBlock(File->Fd(),false);
while (In.WriteSpace() == true)
{
- if (In.Write(File.Fd()) == false)
+ if (In.Write(File->Fd()) == false)
return _error->Errno("write",_("Error writing to the file"));
// Done
// See if this is because the server finished the data stream
if (In.IsLimit() == false && State != HttpServerState::Header &&
- Encoding != HttpServerState::Closes)
+ Persistent == true)
{
Close();
if (LErrno == 0)
return true;
}
- if (In.IsLimit() == true || Encoding == ServerState::Closes)
+ if (In.IsLimit() == true || Persistent == false)
return true;
}
return false;
if (Res == 0)
{
_error->Error(_("Connection timed out"));
- return Die(*File);
+ return Die(File);
}
// Handle server IO
{
errno = 0;
if (In.Read(ServerFd) == false)
- return Die(*File);
+ return Die(File);
}
if (ServerFd != -1 && FD_ISSET(ServerFd,&wfds))
{
errno = 0;
if (Out.Write(ServerFd) == false)
- return Die(*File);
+ return Die(File);
}
// Send data to the file
return _error->Errno("write",_("Error writing to output file"));
}
+ if (MaximumSize > 0 && File && File->Tell() > MaximumSize)
+ {
+ Owner->SetFailReason("MaximumSizeExceeded");
+ return _error->Error("Writing more data than expected (%llu > %llu)",
+ File->Tell(), MaximumSize);
+ }
+
// Handle commands from APT
if (FD_ISSET(STDIN_FILENO,&rfds))
{
URI Uri = Itm->Uri;
// The HTTP server expects a hostname with a trailing :port
- char Buf[1000];
+ std::stringstream Req;
string ProperHost;
if (Uri.Host.find(':') != string::npos)
ProperHost = '[' + Uri.Host + ']';
else
ProperHost = Uri.Host;
- if (Uri.Port != 0)
- {
- sprintf(Buf,":%u",Uri.Port);
- ProperHost += Buf;
- }
-
- // Just in case.
- if (Itm->Uri.length() >= sizeof(Buf))
- abort();
/* RFC 2616 ยง5.1.2 requires absolute URIs for requests to proxies,
but while its a must for all servers to accept absolute URIs,
in 1.1, can cause problems with proxies, and we are an HTTP/1.1
client anyway.
C.f. https://tools.ietf.org/wg/httpbis/trac/ticket/158 */
- sprintf(Buf,"GET %s HTTP/1.1\r\nHost: %s\r\n",
- requesturi.c_str(),ProperHost.c_str());
+ Req << "GET " << requesturi << " HTTP/1.1\r\n";
+ if (Uri.Port != 0)
+ Req << "Host: " << ProperHost << ":" << std::to_string(Uri.Port) << "\r\n";
+ else
+ Req << "Host: " << ProperHost << "\r\n";
// generate a cache control header (if needed)
- if (_config->FindB("Acquire::http::No-Cache",false) == true)
- {
- strcat(Buf,"Cache-Control: no-cache\r\nPragma: no-cache\r\n");
- }
- else
- {
- if (Itm->IndexFile == true)
- {
- sprintf(Buf+strlen(Buf),"Cache-Control: max-age=%u\r\n",
- _config->FindI("Acquire::http::Max-Age",0));
- }
- else
- {
- if (_config->FindB("Acquire::http::No-Store",false) == true)
- strcat(Buf,"Cache-Control: no-store\r\n");
- }
- }
+ if (_config->FindB("Acquire::http::No-Cache",false) == true)
+ Req << "Cache-Control: no-cache\r\n"
+ << "Pragma: no-cache\r\n";
+ else if (Itm->IndexFile == true)
+ Req << "Cache-Control: max-age=" << std::to_string(_config->FindI("Acquire::http::Max-Age",0)) << "\r\n";
+ else if (_config->FindB("Acquire::http::No-Store",false) == true)
+ Req << "Cache-Control: no-store\r\n";
// If we ask for uncompressed files servers might respond with content-
- // negotation which lets us end up with compressed files we do not support,
+ // 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.
size_t const filepos = Itm->Uri.find_last_of('/');
string const file = Itm->Uri.substr(filepos + 1);
if (flExtension(file) == file)
- strcat(Buf,"Accept: text/*\r\n");
+ Req << "Accept: text/*\r\n";
}
- string Req = Buf;
-
- // Check for a partial file
+ // Check for a partial file and send if-queries accordingly
struct stat SBuf;
if (stat(Itm->DestFile.c_str(),&SBuf) >= 0 && SBuf.st_size > 0)
- {
- // In this case we send an if-range query with a range header
- sprintf(Buf,"Range: bytes=%lli-\r\nIf-Range: %s\r\n",(long long)SBuf.st_size,
- TimeRFC1123(SBuf.st_mtime).c_str());
- Req += Buf;
- }
- else
- {
- if (Itm->LastModified != 0)
- {
- sprintf(Buf,"If-Modified-Since: %s\r\n",TimeRFC1123(Itm->LastModified).c_str());
- Req += Buf;
- }
- }
+ Req << "Range: bytes=" << std::to_string(SBuf.st_size) << "-\r\n"
+ << "If-Range: " << TimeRFC1123(SBuf.st_mtime, false) << "\r\n";
+ else if (Itm->LastModified != 0)
+ Req << "If-Modified-Since: " << TimeRFC1123(Itm->LastModified, false).c_str() << "\r\n";
if (Server->Proxy.User.empty() == false || Server->Proxy.Password.empty() == false)
- Req += string("Proxy-Authorization: Basic ") +
- Base64Encode(Server->Proxy.User + ":" + Server->Proxy.Password) + "\r\n";
+ Req << "Proxy-Authorization: Basic "
+ << Base64Encode(Server->Proxy.User + ":" + Server->Proxy.Password) << "\r\n";
maybe_add_auth (Uri, _config->FindFile("Dir::Etc::netrc"));
if (Uri.User.empty() == false || Uri.Password.empty() == false)
- {
- Req += string("Authorization: Basic ") +
- Base64Encode(Uri.User + ":" + Uri.Password) + "\r\n";
- }
- Req += "User-Agent: " + _config->Find("Acquire::http::User-Agent",
- "Debian APT-HTTP/1.3 (" PACKAGE_VERSION ")") + "\r\n\r\n";
-
+ Req << "Authorization: Basic "
+ << Base64Encode(Uri.User + ":" + Uri.Password) << "\r\n";
+
+ Req << "User-Agent: " << _config->Find("Acquire::http::User-Agent",
+ "Debian APT-HTTP/1.3 (" PACKAGE_VERSION ")") << "\r\n";
+
+ Req << "\r\n";
+
if (Debug == true)
- cerr << Req << endl;
+ cerr << Req.str() << endl;
- Server->WriteResponse(Req);
+ Server->WriteResponse(Req.str());
}
/*}}}*/
// HttpMethod::Configuration - Handle a configuration message /*{{{*/
PipelineDepth = _config->FindI("Acquire::http::Pipeline-Depth",
PipelineDepth);
Debug = _config->FindB("Debug::Acquire::http",false);
- AutoDetectProxyCmd = _config->Find("Acquire::http::ProxyAutoDetect");
-
- // Get the proxy to use
- AutoDetectProxy();
return true;
}
/*}}}*/
-// HttpMethod::AutoDetectProxy - auto detect proxy /*{{{*/
-// ---------------------------------------------------------------------
-/* */
-bool HttpMethod::AutoDetectProxy()
+std::unique_ptr<ServerState> HttpMethod::CreateServerState(URI const &uri)/*{{{*/
{
- if (AutoDetectProxyCmd.empty())
- return true;
-
- if (Debug)
- clog << "Using auto proxy detect command: " << AutoDetectProxyCmd << endl;
-
- int Pipes[2] = {-1,-1};
- if (pipe(Pipes) != 0)
- return _error->Errno("pipe", "Failed to create Pipe");
-
- pid_t Process = ExecFork();
- if (Process == 0)
- {
- close(Pipes[0]);
- dup2(Pipes[1],STDOUT_FILENO);
- SetCloseExec(STDOUT_FILENO,false);
-
- const char *Args[2];
- Args[0] = AutoDetectProxyCmd.c_str();
- Args[1] = 0;
- execv(Args[0],(char **)Args);
- cerr << "Failed to exec method " << Args[0] << endl;
- _exit(100);
- }
- char buf[512];
- int InFd = Pipes[0];
- close(Pipes[1]);
- int res = read(InFd, buf, sizeof(buf)-1);
- ExecWait(Process, "ProxyAutoDetect", true);
-
- if (res < 0)
- return _error->Errno("read", "Failed to read");
- if (res == 0)
- return _error->Warning("ProxyAutoDetect returned no data");
-
- // add trailing \0
- buf[res] = 0;
-
- if (Debug)
- clog << "auto detect command returned: '" << buf << "'" << endl;
-
- if (strstr(buf, "http://") == buf)
- _config->Set("Acquire::http::proxy", _strstrip(buf));
-
- return true;
+ return std::unique_ptr<ServerState>(new HttpServerState(uri, this));
}
/*}}}*/
-ServerState * HttpMethod::CreateServerState(URI uri) /*{{{*/
+void HttpMethod::RotateDNS() /*{{{*/
{
- return new HttpServerState(uri, this);
+ ::RotateDNS();
}
/*}}}*/
-void HttpMethod::RotateDNS() /*{{{*/
+ServerMethod::DealWithHeadersResult HttpMethod::DealWithHeaders(FetchResult &Res)/*{{{*/
{
- ::RotateDNS();
+ auto ret = ServerMethod::DealWithHeaders(Res);
+ if (ret != ServerMethod::FILE_IS_OPEN)
+ return ret;
+
+ // Open the file
+ delete File;
+ File = new FileFd(Queue->DestFile,FileFd::WriteAny);
+ if (_error->PendingError() == true)
+ return ERROR_NOT_FROM_SERVER;
+
+ FailFile = Queue->DestFile;
+ FailFile.c_str(); // Make sure we don't do a malloc in the signal handler
+ FailFd = File->Fd();
+ FailTime = Server->Date;
+
+ if (Server->InitHashes(Queue->ExpectedHashes) == false || Server->AddPartialFileToHashes(*File) == false)
+ {
+ _error->Errno("read",_("Problem hashing file"));
+ return ERROR_NOT_FROM_SERVER;
+ }
+ if (Server->StartPos > 0)
+ Res.ResumePoint = Server->StartPos;
+
+ SetNonBlock(File->Fd(),true);
+ return FILE_IS_OPEN;
}
/*}}}*/
projects / apt.git / blobdiff