X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/9ce3cfc9309c55cc01018c88c1ca82779fd74431..4bba5a88d0f6afde4414b586b64c48a4851d5324:/methods/https.cc?ds=sidebyside diff --git a/methods/https.cc b/methods/https.cc index e16e36339..a5a8a7cd1 100644 --- a/methods/https.cc +++ b/methods/https.cc @@ -3,7 +3,7 @@ // $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 @@ -13,36 +13,45 @@ #include #include -#include #include #include #include #include +#include +#include +#include #include #include #include -#include #include -#include -#include #include #include +#include +#include -#include "config.h" #include "https.h" + #include /*}}}*/ using namespace std; +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) { size_t len = size * nmemb; - HttpsMethod *me = (HttpsMethod *)userp; + CURLUserPointer *me = static_cast(userp); std::string line((char*) buffer, len); for (--len; len > 0; --len) - if (isspace(line[len]) == 0) + if (isspace_ascii(line[len]) == 0) { ++len; break; @@ -51,20 +60,55 @@ HttpsMethod::parse_header(void *buffer, size_t size, size_t nmemb, void *userp) if (line.empty() == true) { - if (me->Server->Result != 416 && me->Server->StartPos != 0) + me->https->Server->JunkSize = 0; + if (me->https->Server->Result != 416 && me->https->Server->StartPos != 0) ; - else if (me->Server->Result == 416 && me->Server->Size == me->File->FileSize()) + else if (me->https->Server->Result == 416) { - me->Server->Result = 200; - me->Server->StartPos = me->Server->Size; + 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::max(); + } + else + me->https->Server->StartPos = 0; } else - me->Server->StartPos = 0; + me->https->Server->StartPos = 0; - me->File->Truncate(me->Server->StartPos); - me->File->Seek(me->Server->StartPos); + 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->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 + me->https->Server->JunkSize = std::numeric_limitshttps->Server->JunkSize)>::max(); } - else if (me->Server->HeaderLine(line) == false) + else if (me->https->Server->HeaderLine(line) == false) return 0; return size*nmemb; @@ -73,38 +117,61 @@ HttpsMethod::parse_header(void *buffer, size_t size, size_t nmemb, void *userp) size_t HttpsMethod::write_data(void *buffer, size_t size, size_t nmemb, void *userp) { - HttpsMethod *me = (HttpsMethod *)userp; + HttpsMethod *me = static_cast(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->File->Write(buffer, size*nmemb) != true) - return false; + 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 size*nmemb; -} + if (me->Server->GetHashes()->Add((unsigned char const * const)buffer, buffer_size) == false) + return 0; -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 long)dltotal; - me->URIStart(me->Res); - } - return 0; + return buffer_size; } // HttpsServerState::HttpsServerState - Constructor /*{{{*/ -HttpsServerState::HttpsServerState(URI Srv,HttpsMethod *Owner) : ServerState(Srv, NULL) +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() /*{{{*/ +bool 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 @@ -120,15 +187,15 @@ void HttpsMethod::SetupProxy() /*{{{*/ // User want to use NO proxy, so nothing to setup if (UseProxy == "DIRECT") - return; + return 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 true; - if (UseProxy.empty() == false) + 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("https_proxy"); // FIXME: Fall back to http_proxy is to remain compatible with // existing setups and behaviour of apt.conf. This should be @@ -141,9 +208,22 @@ void HttpsMethod::SetupProxy() /*{{{*/ } // Determine what host and port to use based on the proxy settings - if (UseProxy.empty() == false) + if (UseProxy.empty() == false) { Proxy = UseProxy; + if (Proxy.Access == "socks5h") + curl_easy_setopt(curl, CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5_HOSTNAME); + else if (Proxy.Access == "socks5") + curl_easy_setopt(curl, CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5); + else if (Proxy.Access == "socks4a") + curl_easy_setopt(curl, CURLOPT_PROXYTYPE, CURLPROXY_SOCKS4A); + else if (Proxy.Access == "socks") + curl_easy_setopt(curl, CURLOPT_PROXYTYPE, CURLPROXY_SOCKS4); + else if (Proxy.Access == "http" || Proxy.Access == "https") + curl_easy_setopt(curl, CURLOPT_PROXYTYPE, CURLPROXY_HTTP); + else + return false; + if (Proxy.Port != 1) curl_easy_setopt(curl, CURLOPT_PROXYPORT, Proxy.Port); curl_easy_setopt(curl, CURLOPT_PROXY, Proxy.Host.c_str()); @@ -153,6 +233,7 @@ void HttpsMethod::SetupProxy() /*{{{*/ curl_easy_setopt(curl, CURLOPT_PROXYPASSWORD, Proxy.Password.c_str()); } } + return true; } /*}}}*/ // HttpsMethod::Fetch - Fetch an item /*{{{*/ // --------------------------------------------------------------------- @@ -161,7 +242,7 @@ void HttpsMethod::SetupProxy() /*{{{*/ bool HttpsMethod::Fetch(FetchItem *Itm) { struct stat SBuf; - struct curl_slist *headers=NULL; + struct curl_slist *headers=NULL; char curl_errorstr[CURL_ERROR_SIZE]; URI Uri = Itm->Uri; string remotehost = Uri.Host; @@ -172,20 +253,26 @@ bool HttpsMethod::Fetch(FetchItem *Itm) // - more debug options? (CURLOPT_DEBUGFUNCTION?) curl_easy_reset(curl); - SetupProxy(); + if (SetupProxy() == false) + return _error->Error("Unsupported proxy configured: %s", URI::SiteOnly(Proxy).c_str()); 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(Uri).c_str()); curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, parse_header); - curl_easy_setopt(curl, CURLOPT_WRITEHEADER, this); + 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); + // options + curl_easy_setopt(curl, CURLOPT_NOPROGRESS, true); curl_easy_setopt(curl, CURLOPT_FILETIME, true); + curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 0); + // 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. @@ -289,14 +376,8 @@ bool HttpsMethod::Fetch(FetchItem *Itm) 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)) + if (Debug == true) curl_easy_setopt(curl, CURLOPT_VERBOSE, true); // error handling @@ -304,7 +385,7 @@ bool HttpsMethod::Fetch(FetchItem *Itm) curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, curl_errorstr); // 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. @@ -319,11 +400,11 @@ bool HttpsMethod::Fetch(FetchItem *Itm) // 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-", (long) SBuf.st_size); - headers = curl_slist_append(headers, Buf); - sprintf(Buf, "If-Range: %s", 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, false).c_str()); + headers = curl_slist_append(headers, Buf.c_str()); } else if(Itm->LastModified > 0) { @@ -333,7 +414,9 @@ bool HttpsMethod::Fetch(FetchItem *Itm) // go for it - if the file exists, append on it File = new FileFd(Itm->DestFile, FileFd::WriteAny); - Server = new HttpsServerState(Itm->Uri, this); + Server = CreateServerState(Itm->Uri); + if (Server->InitHashes(Itm->ExpectedHashes) == false) + return false; // keep apt updated Res.Filename = Itm->DestFile; @@ -345,97 +428,112 @@ bool HttpsMethod::Fetch(FetchItem *Itm) // met, CURLINFO_CONDITION_UNMET will be set to 1 long curl_condition_unmet = 0; curl_easy_getinfo(curl, CURLINFO_CONDITION_UNMET, &curl_condition_unmet); + if (curl_condition_unmet == 1) + Server->Result = 304; File->Close(); curl_slist_free_all(headers); // cleanup - if (success != 0) + if (success != CURLE_OK) { - _error->Error("%s", curl_errorstr); - unlink(File->Name().c_str()); +#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 + // only take curls technical errors if we haven't our own + // (e.g. for the maximum size limit we have and curls can be confusing) + if (_error->PendingError() == false) + _error->Error("%s", curl_errorstr); + else + _error->Warning("curl: %s", curl_errorstr); return false; } - // server says file not modified - if (Server->Result == 304 || curl_condition_unmet == 1) + switch (DealWithHeaders(Res)) { - unlink(File->Name().c_str()); - Res.IMSHit = true; - Res.LastModified = Itm->LastModified; - Res.Size = 0; - URIDone(Res); - return true; - } - Res.IMSHit = false; - - 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; - } + case ServerMethod::IMS_HIT: + URIDone(Res); + break; - 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; + case ServerMethod::ERROR_WITH_CONTENT_PAGE: + // unlink, no need keep 401/404 page content in partial/ + RemoveFile(Binary.c_str(), File->Name()); + case ServerMethod::ERROR_UNRECOVERABLE: + case ServerMethod::ERROR_NOT_FROM_SERVER: + return false; - // invalid range-request - if (Server->Result == 416) - { - unlink(File->Name().c_str()); - Res.Size = 0; - delete File; - Redirect(Itm->Uri); - return true; - } + case ServerMethod::TRY_AGAIN_OR_REDIRECT: + Redirect(NextURI); + break; - // Timestamp - curl_easy_getinfo(curl, CURLINFO_FILETIME, &Res.LastModified); - if (Res.LastModified != -1) - { - struct timespec times[2]; - times[0].tv_sec = Res.LastModified; - times[1].tv_sec = Res.LastModified; - times[0].tv_nsec = times[1].tv_nsec = 0; - futimens(File->Fd(), times); + case ServerMethod::FILE_IS_OPEN: + 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 + Res.TakeHashes(*(Server->GetHashes())); + + // keep apt updated + URIDone(Res); + break; } - else - Res.LastModified = resultStat.st_mtime; - // take hashes - Hashes Hash; - FileFd Fd(Res.Filename, FileFd::ReadOnly); - Hash.AddFD(Fd); - Res.TakeHashes(Hash); - - // keep apt updated - URIDone(Res); - - // cleanup - Res.Size = 0; delete File; + 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 HttpsMethod::CreateServerState(URI const &uri)/*{{{*/ +{ + return std::unique_ptr(new HttpsServerState(uri, this)); +} + /*}}}*/ int main() { - setlocale(LC_ALL, ""); - - HttpsMethod Mth; - curl_global_init(CURL_GLOBAL_SSL) ; - - return Mth.Run(); + return HttpsMethod().Run(); }