diff options
Diffstat (limited to 'methods')
-rw-r--r-- | methods/cdrom.cc | 34 | ||||
-rw-r--r-- | methods/ftp.cc | 5 | ||||
-rw-r--r-- | methods/gpgv.cc | 102 | ||||
-rw-r--r-- | methods/http.cc | 7 | ||||
-rw-r--r-- | methods/https.cc | 103 | ||||
-rw-r--r-- | methods/https.h | 2 |
6 files changed, 148 insertions, 105 deletions
diff --git a/methods/cdrom.cc b/methods/cdrom.cc index 9802eb46c..6d694e7c9 100644 --- a/methods/cdrom.cc +++ b/methods/cdrom.cc @@ -37,8 +37,8 @@ class CDROMMethod : public pkgAcqMethod bool MountedByApt; pkgUdevCdromDevices UdevCdroms; - bool IsCorrectCD(URI want, string MountPath); - bool AutoDetectAndMount(URI); + bool IsCorrectCD(URI want, string MountPath, string& NewID); + bool AutoDetectAndMount(const URI, string &NewID); virtual bool Fetch(FetchItem *Itm); string GetID(string Name); virtual void Exit(); @@ -92,7 +92,7 @@ string CDROMMethod::GetID(string Name) // CDROMMethod::AutoDetectAndMount /*{{{*/ // --------------------------------------------------------------------- /* Modifies class varaiable CDROM to the mountpoint */ -bool CDROMMethod::AutoDetectAndMount(URI Get) +bool CDROMMethod::AutoDetectAndMount(const URI Get, string &NewID) { vector<struct CdromDevice> v = UdevCdroms.Scan(); @@ -103,7 +103,7 @@ bool CDROMMethod::AutoDetectAndMount(URI Get) { if (Debug) clog << "Checking mounted cdrom device " << v[i].DeviceName << endl; - if (IsCorrectCD(Get, v[i].MountPath)) + if (IsCorrectCD(Get, v[i].MountPath, NewID)) { CDROM = v[i].MountPath; return true; @@ -116,23 +116,24 @@ bool CDROMMethod::AutoDetectAndMount(URI Get) return false; // check if we have the mount point - if (!FileExists("/media/apt")) - mkdir("/media/apt", 0755); + string AptMountPoint = _config->FindDir("Dir::Media::MountPath"); + if (!FileExists(AptMountPoint)) + mkdir(AptMountPoint.c_str(), 0750); // now try mounting for (unsigned int i=0; i < v.size(); i++) { if (!v[i].Mounted) { - if(MountCdrom("/media/apt", v[i].DeviceName)) + if(MountCdrom(AptMountPoint, v[i].DeviceName)) { - if (IsCorrectCD(Get, "/media/apt")) + if (IsCorrectCD(Get, AptMountPoint, NewID)) { MountedByApt = true; - CDROM = "/media/apt"; + CDROM = AptMountPoint; return true; } else { - UnmountCdrom("/media/apt"); + UnmountCdrom(AptMountPoint); } } } @@ -144,10 +145,8 @@ bool CDROMMethod::AutoDetectAndMount(URI Get) // CDROMMethod::IsCorrectCD /*{{{*/ // --------------------------------------------------------------------- /* */ -bool CDROMMethod::IsCorrectCD(URI want, string MountPath) +bool CDROMMethod::IsCorrectCD(URI want, string MountPath, string& NewID) { - string NewID; - for (unsigned int Version = 2; Version != 0; Version--) { if (IdentCdrom(MountPath,NewID,Version) == false) @@ -220,23 +219,24 @@ bool CDROMMethod::Fetch(FetchItem *Itm) return true; } + bool AutoDetect = _config->FindB("Acquire::cdrom::AutoDetect", false); CDROM = _config->FindDir("Acquire::cdrom::mount","/cdrom/"); if (Debug) clog << "Looking for CDROM at " << CDROM << endl; if (CDROM[0] == '.') CDROM= SafeGetCWD() + '/' + CDROM; - string NewID; + string NewID; while (CurrentID.empty() == true) { - if (CDROM == "apt-udev-auto/") - AutoDetectAndMount(Get); + if (AutoDetect) + AutoDetectAndMount(Get, NewID); if(!IsMounted(CDROM)) MountedByApt = MountCdrom(CDROM); - if (IsCorrectCD(Get, CDROM)) + if (IsCorrectCD(Get, CDROM, NewID)) break; // I suppose this should prompt somehow? diff --git a/methods/ftp.cc b/methods/ftp.cc index c91600ad5..3e1725823 100644 --- a/methods/ftp.cc +++ b/methods/ftp.cc @@ -19,6 +19,7 @@ #include <apt-pkg/acquire-method.h> #include <apt-pkg/error.h> #include <apt-pkg/hashes.h> +#include <apt-pkg/netrc.h> #include <sys/stat.h> #include <sys/time.h> @@ -982,7 +983,9 @@ bool FtpMethod::Fetch(FetchItem *Itm) FetchResult Res; Res.Filename = Itm->DestFile; Res.IMSHit = false; - + + maybe_add_auth (Get, _config->FindFile("Dir::Etc::netrc")); + // Connect to the server if (Server == 0 || Server->Comp(Get) == false) { diff --git a/methods/gpgv.cc b/methods/gpgv.cc index 150c1d315..c58e6cc45 100644 --- a/methods/gpgv.cc +++ b/methods/gpgv.cc @@ -1,10 +1,9 @@ #include <apt-pkg/error.h> #include <apt-pkg/acquire-method.h> #include <apt-pkg/strutl.h> +#include <apt-pkg/fileutl.h> #include <apti18n.h> -#include <sys/stat.h> -#include <unistd.h> #include <utime.h> #include <stdio.h> #include <fcntl.h> @@ -45,42 +44,47 @@ string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile, vector<string> &WorthlessSigners, vector<string> &NoPubKeySigners) { + bool const Debug = _config->FindB("Debug::Acquire::gpgv", false); // setup a (empty) stringstream for formating the return value std::stringstream ret; ret.str(""); - if (_config->FindB("Debug::Acquire::gpgv", false)) - { - std::cerr << "inside VerifyGetSigners" << std::endl; - } + if (Debug == true) + std::clog << "inside VerifyGetSigners" << std::endl; + pid_t pid; int fd[2]; FILE *pipein; int status; - struct stat buff; - string gpgvpath = _config->Find("Dir::Bin::gpg", "/usr/bin/gpgv"); - string pubringpath = _config->Find("APT::GPGV::TrustedKeyring", "/etc/apt/trusted.gpg"); - if (_config->FindB("Debug::Acquire::gpgv", false)) + string const gpgvpath = _config->Find("Dir::Bin::gpg", "/usr/bin/gpgv"); + // FIXME: remove support for deprecated APT::GPGV setting + string const trustedFile = _config->FindFile("Dir::Etc::Trusted", + _config->Find("APT::GPGV::TrustedKeyring", "/etc/apt/trusted.gpg").c_str()); + string const trustedPath = _config->FindDir("Dir::Etc::TrustedParts", "/etc/apt/trusted.gpg.d"); + if (Debug == true) { - std::cerr << "gpgv path: " << gpgvpath << std::endl; - std::cerr << "Keyring path: " << pubringpath << std::endl; + std::clog << "gpgv path: " << gpgvpath << std::endl; + std::clog << "Keyring file: " << trustedFile << std::endl; + std::clog << "Keyring path: " << trustedPath << std::endl; } - if (stat(pubringpath.c_str(), &buff) != 0) + vector<string> keyrings = GetListOfFilesInDir(trustedPath, "gpg", false); + if (FileExists(trustedFile) == true) + keyrings.push_back(trustedFile); + + if (keyrings.empty() == true) { - ioprintf(ret, _("Couldn't access keyring: '%s'"), strerror(errno)); + // TRANSLATOR: %s is the trusted keyring parts directory + ioprintf(ret, _("No keyring installed in %s."), trustedPath.c_str()); return ret.str(); } + if (pipe(fd) < 0) - { return "Couldn't create pipe"; - } pid = fork(); if (pid < 0) - { return string("Couldn't spawn new process") + strerror(errno); - } else if (pid == 0) { const char *Args[400]; @@ -90,8 +94,17 @@ string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile, Args[i++] = "--status-fd"; Args[i++] = "3"; Args[i++] = "--ignore-time-conflict"; - Args[i++] = "--keyring"; - Args[i++] = pubringpath.c_str(); + for (vector<string>::const_iterator K = keyrings.begin(); + K != keyrings.end(); ++K) + { + Args[i++] = "--keyring"; + Args[i++] = K->c_str(); + // check overflow (minus a bit of extra space at the end) + if(i >= sizeof(Args)/sizeof(char*)-5) { + std::clog << _("E: Too many keyrings should be passed to gpgv. Exiting.") << std::endl; + exit(111); + } + } Configuration::Item const *Opts; Opts = _config->Tree("Acquire::gpgv::Options"); @@ -103,8 +116,9 @@ string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile, if (Opts->Value.empty() == true) continue; Args[i++] = Opts->Value.c_str(); - if(i >= 395) { - std::cerr << _("E: Argument list from Acquire::gpgv::Options too long. Exiting.") << std::endl; + // check overflow (minus a bit of extra space at the end) + if(i >= sizeof(Args)/sizeof(char*)-5) { + std::clog << _("E: Argument list from Acquire::gpgv::Options too long. Exiting.") << std::endl; exit(111); } } @@ -113,14 +127,14 @@ string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile, Args[i++] = outfile; Args[i++] = NULL; - if (_config->FindB("Debug::Acquire::gpgv", false)) + if (Debug == true) { - std::cerr << "Preparing to exec: " << gpgvpath; + std::clog << "Preparing to exec: " << gpgvpath; for(unsigned int j=0;Args[j] != NULL; j++) - std::cerr << " " << Args[j]; - std::cerr << std::endl; + std::clog << " " << Args[j]; + std::clog << std::endl; } - int nullfd = open("/dev/null", O_RDONLY); + int const nullfd = open("/dev/null", O_RDONLY); close(fd[0]); // Redirect output to /dev/null; we read from the status fd dup2(nullfd, STDOUT_FILENO); @@ -159,8 +173,8 @@ string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile, break; *(buffer+bufferoff) = '\0'; bufferoff = 0; - if (_config->FindB("Debug::Acquire::gpgv", false)) - std::cerr << "Read: " << buffer << std::endl; + if (Debug == true) + std::clog << "Read: " << buffer << std::endl; // Push the data into three separate vectors, which // we later concatenate. They're kept separate so @@ -168,33 +182,33 @@ string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile, // it will be better. if (strncmp(buffer, GNUPGBADSIG, sizeof(GNUPGBADSIG)-1) == 0) { - if (_config->FindB("Debug::Acquire::gpgv", false)) - std::cerr << "Got BADSIG! " << std::endl; + if (Debug == true) + std::clog << "Got BADSIG! " << std::endl; BadSigners.push_back(string(buffer+sizeof(GNUPGPREFIX))); } if (strncmp(buffer, GNUPGNOPUBKEY, sizeof(GNUPGNOPUBKEY)-1) == 0) { - if (_config->FindB("Debug::Acquire::gpgv", false)) - std::cerr << "Got NO_PUBKEY " << std::endl; + if (Debug == true) + std::clog << "Got NO_PUBKEY " << std::endl; NoPubKeySigners.push_back(string(buffer+sizeof(GNUPGPREFIX))); } if (strncmp(buffer, GNUPGNODATA, sizeof(GNUPGBADSIG)-1) == 0) { - if (_config->FindB("Debug::Acquire::gpgv", false)) - std::cerr << "Got NODATA! " << std::endl; + if (Debug == true) + std::clog << "Got NODATA! " << std::endl; BadSigners.push_back(string(buffer+sizeof(GNUPGPREFIX))); } if (strncmp(buffer, GNUPGKEYEXPIRED, sizeof(GNUPGKEYEXPIRED)-1) == 0) { - if (_config->FindB("Debug::Acquire::gpgv", false)) - std::cerr << "Got KEYEXPIRED! " << std::endl; + if (Debug == true) + std::clog << "Got KEYEXPIRED! " << std::endl; WorthlessSigners.push_back(string(buffer+sizeof(GNUPGPREFIX))); } if (strncmp(buffer, GNUPGREVKEYSIG, sizeof(GNUPGREVKEYSIG)-1) == 0) { - if (_config->FindB("Debug::Acquire::gpgv", false)) - std::cerr << "Got REVKEYSIG! " << std::endl; + if (Debug == true) + std::clog << "Got REVKEYSIG! " << std::endl; WorthlessSigners.push_back(string(buffer+sizeof(GNUPGPREFIX))); } if (strncmp(buffer, GNUPGGOODSIG, sizeof(GNUPGGOODSIG)-1) == 0) @@ -204,17 +218,17 @@ string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile, while (*p && isxdigit(*p)) p++; *p = 0; - if (_config->FindB("Debug::Acquire::gpgv", false)) - std::cerr << "Got GOODSIG, key ID:" << sig << std::endl; + if (Debug == true) + std::clog << "Got GOODSIG, key ID:" << sig << std::endl; GoodSigners.push_back(string(sig)); } } fclose(pipein); waitpid(pid, &status, 0); - if (_config->FindB("Debug::Acquire::gpgv", false)) + if (Debug == true) { - std::cerr << "gpgv exited\n"; + std::clog << "gpgv exited\n"; } if (WEXITSTATUS(status) == 0) @@ -305,7 +319,7 @@ bool GPGVMethod::Fetch(FetchItem *Itm) if (_config->FindB("Debug::Acquire::gpgv", false)) { - std::cerr << "gpgv succeeded\n"; + std::clog << "gpgv succeeded\n"; } return true; diff --git a/methods/http.cc b/methods/http.cc index 8fcff0b5d..2dae87a02 100644 --- a/methods/http.cc +++ b/methods/http.cc @@ -29,6 +29,7 @@ #include <apt-pkg/acquire-method.h> #include <apt-pkg/error.h> #include <apt-pkg/hashes.h> +#include <apt-pkg/netrc.h> #include <sys/stat.h> #include <sys/time.h> @@ -42,6 +43,7 @@ #include <map> #include <apti18n.h> + // Internet stuff #include <netdb.h> @@ -49,7 +51,6 @@ #include "connect.h" #include "rfc2553emu.h" #include "http.h" - /*}}}*/ using namespace std; @@ -724,10 +725,12 @@ void HttpMethod::SendReq(FetchItem *Itm,CircleBuf &Out) Req += string("Proxy-Authorization: Basic ") + Base64Encode(Proxy.User + ":" + 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 ("VERSION")") + "\r\n\r\n"; diff --git a/methods/https.cc b/methods/https.cc index 4daa04e32..aa6786aa8 100644 --- a/methods/https.cc +++ b/methods/https.cc @@ -14,6 +14,7 @@ #include <apt-pkg/acquire-method.h> #include <apt-pkg/error.h> #include <apt-pkg/hashes.h> +#include <apt-pkg/netrc.h> #include <sys/stat.h> #include <sys/time.h> @@ -56,37 +57,40 @@ HttpsMethod::progress_callback(void *clientp, double dltotal, double dlnow, return 0; } -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()); - } +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).c_str()); + + if (UseProxy.empty() == true) + UseProxy = _config->Find("Acquire::https::Proxy", _config->Find("Acquire::http::Proxy").c_str()); + + // 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 /*{{{*/ // --------------------------------------------------------------------- @@ -110,8 +114,10 @@ bool HttpsMethod::Fetch(FetchItem *Itm) curl_easy_reset(curl); SetupProxy(); + maybe_add_auth (Uri, _config->FindFile("Dir::Etc::netrc")); + // callbacks - curl_easy_setopt(curl, CURLOPT_URL, Itm->Uri.c_str()); + curl_easy_setopt(curl, CURLOPT_URL, static_cast<string>(Uri).c_str()); curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data); curl_easy_setopt(curl, CURLOPT_WRITEDATA, this); curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, progress_callback); @@ -119,7 +125,6 @@ bool HttpsMethod::Fetch(FetchItem *Itm) curl_easy_setopt(curl, CURLOPT_NOPROGRESS, false); curl_easy_setopt(curl, CURLOPT_FAILONERROR, true); 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. @@ -128,7 +133,7 @@ bool HttpsMethod::Fetch(FetchItem *Itm) 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 ... @@ -146,18 +151,25 @@ bool HttpsMethod::Fetch(FetchItem *Itm) default_verify = 0; curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 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 @@ -172,6 +184,13 @@ bool HttpsMethod::Fetch(FetchItem *Itm) 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) @@ -191,7 +210,7 @@ bool HttpsMethod::Fetch(FetchItem *Itm) 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); @@ -200,16 +219,18 @@ bool HttpsMethod::Fetch(FetchItem *Itm) 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()); + "Debian APT-CURL/1.0 ("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_TIMEOUT, timeout); curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, timeout); + //set really low lowspeed timeout (see #497983) + 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 AllowRedirect = _config->FindB("Acquire::https::AllowRedirect", + 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); diff --git a/methods/https.h b/methods/https.h index 2c33d95ee..3f0c416b6 100644 --- a/methods/https.h +++ b/methods/https.h @@ -24,6 +24,8 @@ class HttpsMethod; class HttpsMethod : public pkgAcqMethod { + // minimum speed in bytes/se that triggers download timeout handling + static const int DL_MIN_SPEED = 10; virtual bool Fetch(FetchItem *); static size_t write_data(void *buffer, size_t size, size_t nmemb, void *userp); |