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-rw-r--r--methods/http.cc286
1 files changed, 237 insertions, 49 deletions
diff --git a/methods/http.cc b/methods/http.cc
index 9fcc80103..0358b50cd 100644
--- a/methods/http.cc
+++ b/methods/http.cc
@@ -44,6 +44,7 @@
#include <unistd.h>
#include <stdio.h>
#include <errno.h>
+#include <arpa/inet.h>
#include <iostream>
#include <sstream>
@@ -63,13 +64,13 @@ const unsigned int CircleBuf::BW_HZ=10;
// CircleBuf::CircleBuf - Circular input buffer /*{{{*/
// ---------------------------------------------------------------------
/* */
-CircleBuf::CircleBuf(unsigned long long Size)
+CircleBuf::CircleBuf(HttpMethod const * const Owner, unsigned long long Size)
: Size(Size), Hash(NULL), TotalWriten(0)
{
Buf = new unsigned char[Size];
Reset();
- CircleBuf::BwReadLimit = _config->FindI("Acquire::http::Dl-Limit",0)*1024;
+ CircleBuf::BwReadLimit = Owner->ConfigFindI("Dl-Limit", 0) * 1024;
}
/*}}}*/
// CircleBuf::Reset - Reset to the default state /*{{{*/
@@ -151,9 +152,9 @@ bool CircleBuf::Read(int Fd)
// CircleBuf::Read - Put the string into the buffer /*{{{*/
// ---------------------------------------------------------------------
/* This will hold the string in and fill the buffer with it as it empties */
-bool CircleBuf::Read(string Data)
+bool CircleBuf::Read(string const &Data)
{
- OutQueue += Data;
+ OutQueue.append(Data);
FillOut();
return true;
}
@@ -287,15 +288,33 @@ CircleBuf::~CircleBuf()
}
// HttpServerState::HttpServerState - Constructor /*{{{*/
-HttpServerState::HttpServerState(URI Srv,HttpMethod *Owner) : ServerState(Srv, Owner), In(64*1024), Out(4*1024)
+HttpServerState::HttpServerState(URI Srv,HttpMethod *Owner) : ServerState(Srv, Owner), In(Owner, 64*1024), Out(Owner, 4*1024)
{
- TimeOut = _config->FindI("Acquire::http::Timeout",TimeOut);
+ TimeOut = Owner->ConfigFindI("Timeout", TimeOut);
Reset();
}
/*}}}*/
// HttpServerState::Open - Open a connection to the server /*{{{*/
// ---------------------------------------------------------------------
/* This opens a connection to the server. */
+static bool TalkToSocksProxy(int const ServerFd, std::string const &Proxy,
+ char const * const type, bool const ReadWrite, uint8_t * const ToFrom,
+ unsigned int const Size, unsigned int const Timeout)
+{
+ if (WaitFd(ServerFd, ReadWrite, Timeout) == false)
+ return _error->Error("Waiting for the SOCKS proxy %s to %s timed out", URI::SiteOnly(Proxy).c_str(), type);
+ if (ReadWrite == false)
+ {
+ if (FileFd::Read(ServerFd, ToFrom, Size) == false)
+ return _error->Error("Reading the %s from SOCKS proxy %s failed", type, URI::SiteOnly(Proxy).c_str());
+ }
+ else
+ {
+ if (FileFd::Write(ServerFd, ToFrom, Size) == false)
+ return _error->Error("Writing the %s to SOCKS proxy %s failed", type, URI::SiteOnly(Proxy).c_str());
+ }
+ return true;
+}
bool HttpServerState::Open()
{
// Use the already open connection if possible.
@@ -309,7 +328,7 @@ bool HttpServerState::Open()
// Determine the proxy setting
AutoDetectProxy(ServerName);
- string SpecificProxy = _config->Find("Acquire::http::Proxy::" + ServerName.Host);
+ string SpecificProxy = Owner->ConfigFind("Proxy::" + ServerName.Host, "");
if (!SpecificProxy.empty())
{
if (SpecificProxy == "DIRECT")
@@ -319,7 +338,7 @@ bool HttpServerState::Open()
}
else
{
- string DefProxy = _config->Find("Acquire::http::Proxy");
+ string DefProxy = Owner->ConfigFind("Proxy", "");
if (!DefProxy.empty())
{
Proxy = DefProxy;
@@ -337,27 +356,159 @@ bool HttpServerState::Open()
if (CheckDomainList(ServerName.Host,getenv("no_proxy")) == true)
Proxy = "";
}
-
- // Determine what host and port to use based on the proxy settings
- int Port = 0;
- string Host;
- if (Proxy.empty() == true || Proxy.Host.empty() == true)
+
+ if (Proxy.empty() == false)
+ Owner->AddProxyAuth(Proxy, ServerName);
+
+ if (Proxy.Access == "socks5h")
{
- if (ServerName.Port != 0)
- Port = ServerName.Port;
- Host = ServerName.Host;
+ if (Connect(Proxy.Host, Proxy.Port, "socks", 1080, ServerFd, TimeOut, Owner) == false)
+ return false;
+
+ /* We implement a very basic SOCKS5 client here complying mostly to RFC1928 expect
+ * for not offering GSSAPI auth which is a must (we only do no or user/pass auth).
+ * We also expect the SOCKS5 server to do hostname lookup (aka socks5h) */
+ std::string const ProxyInfo = URI::SiteOnly(Proxy);
+ Owner->Status(_("Connecting to %s (%s)"),"SOCKS5h proxy",ProxyInfo.c_str());
+ auto const Timeout = Owner->ConfigFindI("TimeOut", 120);
+ #define APT_WriteOrFail(TYPE, DATA, LENGTH) if (TalkToSocksProxy(ServerFd, ProxyInfo, TYPE, true, DATA, LENGTH, Timeout) == false) return false
+ #define APT_ReadOrFail(TYPE, DATA, LENGTH) if (TalkToSocksProxy(ServerFd, ProxyInfo, TYPE, false, DATA, LENGTH, Timeout) == false) return false
+ if (ServerName.Host.length() > 255)
+ return _error->Error("Can't use SOCKS5h as hostname %s is too long!", ServerName.Host.c_str());
+ if (Proxy.User.length() > 255 || Proxy.Password.length() > 255)
+ return _error->Error("Can't use user&pass auth as they are too long (%lu and %lu) for the SOCKS5!", Proxy.User.length(), Proxy.Password.length());
+ if (Proxy.User.empty())
+ {
+ uint8_t greeting[] = { 0x05, 0x01, 0x00 };
+ APT_WriteOrFail("greet-1", greeting, sizeof(greeting));
+ }
+ else
+ {
+ uint8_t greeting[] = { 0x05, 0x02, 0x00, 0x02 };
+ APT_WriteOrFail("greet-2", greeting, sizeof(greeting));
+ }
+ uint8_t greeting[2];
+ APT_ReadOrFail("greet back", greeting, sizeof(greeting));
+ if (greeting[0] != 0x05)
+ return _error->Error("SOCKS proxy %s greets back with wrong version: %d", ProxyInfo.c_str(), greeting[0]);
+ if (greeting[1] == 0x00)
+ ; // no auth has no method-dependent sub-negotiations
+ else if (greeting[1] == 0x02)
+ {
+ if (Proxy.User.empty())
+ return _error->Error("SOCKS proxy %s negotiated user&pass auth, but we had not offered it!", ProxyInfo.c_str());
+ // user&pass auth sub-negotiations are defined by RFC1929
+ std::vector<uint8_t> auth = {{ 0x01, static_cast<uint8_t>(Proxy.User.length()) }};
+ std::copy(Proxy.User.begin(), Proxy.User.end(), std::back_inserter(auth));
+ auth.push_back(static_cast<uint8_t>(Proxy.Password.length()));
+ std::copy(Proxy.Password.begin(), Proxy.Password.end(), std::back_inserter(auth));
+ APT_WriteOrFail("user&pass auth", auth.data(), auth.size());
+ uint8_t authstatus[2];
+ APT_ReadOrFail("auth report", authstatus, sizeof(authstatus));
+ if (authstatus[0] != 0x01)
+ return _error->Error("SOCKS proxy %s auth status response with wrong version: %d", ProxyInfo.c_str(), authstatus[0]);
+ if (authstatus[1] != 0x00)
+ return _error->Error("SOCKS proxy %s reported authorization failure: username or password incorrect? (%d)", ProxyInfo.c_str(), authstatus[1]);
+ }
+ else
+ return _error->Error("SOCKS proxy %s greets back having not found a common authorization method: %d", ProxyInfo.c_str(), greeting[1]);
+ union { uint16_t * i; uint8_t * b; } portu;
+ uint16_t port = htons(static_cast<uint16_t>(ServerName.Port == 0 ? 80 : ServerName.Port));
+ portu.i = &port;
+ std::vector<uint8_t> request = {{ 0x05, 0x01, 0x00, 0x03, static_cast<uint8_t>(ServerName.Host.length()) }};
+ std::copy(ServerName.Host.begin(), ServerName.Host.end(), std::back_inserter(request));
+ request.push_back(portu.b[0]);
+ request.push_back(portu.b[1]);
+ APT_WriteOrFail("request", request.data(), request.size());
+ uint8_t response[4];
+ APT_ReadOrFail("first part of response", response, sizeof(response));
+ if (response[0] != 0x05)
+ return _error->Error("SOCKS proxy %s response with wrong version: %d", ProxyInfo.c_str(), response[0]);
+ if (response[2] != 0x00)
+ return _error->Error("SOCKS proxy %s has unexpected non-zero reserved field value: %d", ProxyInfo.c_str(), response[2]);
+ std::string bindaddr;
+ if (response[3] == 0x01) // IPv4 address
+ {
+ uint8_t ip4port[6];
+ APT_ReadOrFail("IPv4+Port of response", ip4port, sizeof(ip4port));
+ portu.b[0] = ip4port[4];
+ portu.b[1] = ip4port[5];
+ port = ntohs(*portu.i);
+ strprintf(bindaddr, "%d.%d.%d.%d:%d", ip4port[0], ip4port[1], ip4port[2], ip4port[3], port);
+ }
+ else if (response[3] == 0x03) // hostname
+ {
+ uint8_t namelength;
+ APT_ReadOrFail("hostname length of response", &namelength, 1);
+ uint8_t hostname[namelength + 2];
+ APT_ReadOrFail("hostname of response", hostname, sizeof(hostname));
+ portu.b[0] = hostname[namelength];
+ portu.b[1] = hostname[namelength + 1];
+ port = ntohs(*portu.i);
+ hostname[namelength] = '\0';
+ strprintf(bindaddr, "%s:%d", hostname, port);
+ }
+ else if (response[3] == 0x04) // IPv6 address
+ {
+ uint8_t ip6port[18];
+ APT_ReadOrFail("IPv6+port of response", ip6port, sizeof(ip6port));
+ portu.b[0] = ip6port[16];
+ portu.b[1] = ip6port[17];
+ port = ntohs(*portu.i);
+ strprintf(bindaddr, "[%02X%02X:%02X%02X:%02X%02X:%02X%02X:%02X%02X:%02X%02X:%02X%02X:%02X%02X]:%d",
+ ip6port[0], ip6port[1], ip6port[2], ip6port[3], ip6port[4], ip6port[5], ip6port[6], ip6port[7],
+ ip6port[8], ip6port[9], ip6port[10], ip6port[11], ip6port[12], ip6port[13], ip6port[14], ip6port[15],
+ port);
+ }
+ else
+ return _error->Error("SOCKS proxy %s destination address is of unknown type: %d",
+ ProxyInfo.c_str(), response[3]);
+ if (response[1] != 0x00)
+ {
+ char const * errstr;
+ switch (response[1])
+ {
+ case 0x01: errstr = "general SOCKS server failure"; Owner->SetFailReason("SOCKS"); break;
+ case 0x02: errstr = "connection not allowed by ruleset"; Owner->SetFailReason("SOCKS"); break;
+ case 0x03: errstr = "Network unreachable"; Owner->SetFailReason("ConnectionTimedOut"); break;
+ case 0x04: errstr = "Host unreachable"; Owner->SetFailReason("ConnectionTimedOut"); break;
+ case 0x05: errstr = "Connection refused"; Owner->SetFailReason("ConnectionRefused"); break;
+ case 0x06: errstr = "TTL expired"; Owner->SetFailReason("Timeout"); break;
+ case 0x07: errstr = "Command not supported"; Owner->SetFailReason("SOCKS"); break;
+ case 0x08: errstr = "Address type not supported"; Owner->SetFailReason("SOCKS"); break;
+ default: errstr = "Unknown error"; Owner->SetFailReason("SOCKS"); break;
+ }
+ return _error->Error("SOCKS proxy %s didn't grant the connect to %s due to: %s (%d)", ProxyInfo.c_str(), bindaddr.c_str(), errstr, response[1]);
+ }
+ else if (Owner->DebugEnabled())
+ ioprintf(std::clog, "http: SOCKS proxy %s connection established to %s\n", ProxyInfo.c_str(), bindaddr.c_str());
+
+ if (WaitFd(ServerFd, true, Timeout) == false)
+ return _error->Error("SOCKS proxy %s reported connection, but timed out", ProxyInfo.c_str());
+ #undef APT_ReadOrFail
+ #undef APT_WriteOrFail
}
else
{
- if (Proxy.Port != 0)
- Port = Proxy.Port;
- Host = Proxy.Host;
+ // Determine what host and port to use based on the proxy settings
+ int Port = 0;
+ string Host;
+ if (Proxy.empty() == true || Proxy.Host.empty() == true)
+ {
+ if (ServerName.Port != 0)
+ 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)
+ Port = Proxy.Port;
+ Host = Proxy.Host;
+ }
+ return Connect(Host,Port,"http",80,ServerFd,TimeOut,Owner);
}
-
- // Connect to the remote server
- if (Connect(Host,Port,"http",80,ServerFd,TimeOut,Owner) == false)
- return false;
-
return true;
}
/*}}}*/
@@ -463,6 +614,12 @@ bool HttpServerState::RunData(FileFd * const File)
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);
@@ -608,7 +765,7 @@ bool HttpServerState::Go(bool ToFile, FileFd * const File)
FD_SET(FileFD,&wfds);
// Add stdin
- if (_config->FindB("Acquire::http::DependOnSTDIN", true) == true)
+ if (Owner->ConfigFindB("DependOnSTDIN", true) == true)
FD_SET(STDIN_FILENO,&rfds);
// Figure out the max fd
@@ -680,6 +837,11 @@ bool HttpServerState::Go(bool ToFile, FileFd * const File)
void HttpMethod::SendReq(FetchItem *Itm)
{
URI Uri = Itm->Uri;
+ {
+ auto const plus = Binary.find('+');
+ if (plus != std::string::npos)
+ Uri.Access = Binary.substr(plus + 1);
+ }
// The HTTP server expects a hostname with a trailing :port
std::stringstream Req;
@@ -694,10 +856,10 @@ void HttpMethod::SendReq(FetchItem *Itm)
but while its a must for all servers to accept absolute URIs,
it is assumed clients will sent an absolute path for non-proxies */
std::string requesturi;
- if (Server->Proxy.empty() == true || Server->Proxy.Host.empty())
+ if (Server->Proxy.Access != "http" || Server->Proxy.empty() == true || Server->Proxy.Host.empty())
requesturi = Uri.Path;
else
- requesturi = Itm->Uri;
+ requesturi = Uri;
// The "+" is encoded as a workaround for a amazon S3 bug
// see LP bugs #1003633 and #1086997.
@@ -714,12 +876,12 @@ void HttpMethod::SendReq(FetchItem *Itm)
Req << "Host: " << ProperHost << "\r\n";
// generate a cache control header (if needed)
- if (_config->FindB("Acquire::http::No-Cache",false) == true)
+ if (ConfigFindB("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: max-age=" << std::to_string(ConfigFindI("Max-Age", 0)) << "\r\n";
+ else if (ConfigFindB("No-Store", false) == true)
Req << "Cache-Control: no-store\r\n";
// If we ask for uncompressed files servers might respond with content-
@@ -727,7 +889,7 @@ void HttpMethod::SendReq(FetchItem *Itm)
// 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::http::SendAccept", true) == true)
+ if (ConfigFindB("SendAccept", true) == true)
{
size_t const filepos = Itm->Uri.find_last_of('/');
string const file = Itm->Uri.substr(filepos + 1);
@@ -743,7 +905,8 @@ void HttpMethod::SendReq(FetchItem *Itm)
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)
+ if (Server->Proxy.Access == "http" &&
+ (Server->Proxy.User.empty() == false || Server->Proxy.Password.empty() == false))
Req << "Proxy-Authorization: Basic "
<< Base64Encode(Server->Proxy.User + ":" + Server->Proxy.Password) << "\r\n";
@@ -752,7 +915,7 @@ void HttpMethod::SendReq(FetchItem *Itm)
Req << "Authorization: Basic "
<< Base64Encode(Uri.User + ":" + Uri.Password) << "\r\n";
- Req << "User-Agent: " << _config->Find("Acquire::http::User-Agent",
+ Req << "User-Agent: " << ConfigFind("User-Agent",
"Debian APT-HTTP/1.3 (" PACKAGE_VERSION ")") << "\r\n";
Req << "\r\n";
@@ -763,22 +926,6 @@ void HttpMethod::SendReq(FetchItem *Itm)
Server->WriteResponse(Req.str());
}
/*}}}*/
-// HttpMethod::Configuration - Handle a configuration message /*{{{*/
-// ---------------------------------------------------------------------
-/* We stash the desired pipeline depth */
-bool HttpMethod::Configuration(string Message)
-{
- if (ServerMethod::Configuration(Message) == false)
- return false;
-
- AllowRedirect = _config->FindB("Acquire::http::AllowRedirect",true);
- PipelineDepth = _config->FindI("Acquire::http::Pipeline-Depth",
- PipelineDepth);
- Debug = _config->FindB("Debug::Acquire::http",false);
-
- return true;
-}
- /*}}}*/
std::unique_ptr<ServerState> HttpMethod::CreateServerState(URI const &uri)/*{{{*/
{
return std::unique_ptr<ServerState>(new HttpServerState(uri, this));
@@ -789,3 +936,44 @@ void HttpMethod::RotateDNS() /*{{{*/
::RotateDNS();
}
/*}}}*/
+ServerMethod::DealWithHeadersResult HttpMethod::DealWithHeaders(FetchResult &Res)/*{{{*/
+{
+ 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;
+}
+ /*}}}*/
+HttpMethod::HttpMethod(std::string &&pProg) : ServerMethod(pProg.c_str(), "1.2", Pipeline | SendConfig)/*{{{*/
+{
+ auto addName = std::inserter(methodNames, methodNames.begin());
+ if (Binary != "http")
+ addName = "http";
+ auto const plus = Binary.find('+');
+ if (plus != std::string::npos)
+ addName = Binary.substr(0, plus);
+ File = 0;
+ Server = 0;
+}
+ /*}}}*/
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