// $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 <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 <sstream>
+#include <ctype.h>
+#include <stdlib.h>
-#include "config.h"
#include "https.h"
+
#include <apti18n.h>
/*}}}*/
using namespace std;
+size_t
+HttpsMethod::parse_header(void *buffer, size_t size, size_t nmemb, void *userp)
+{
+ size_t len = size * nmemb;
+ HttpsMethod *me = (HttpsMethod *)userp;
+ std::string line((char*) buffer, len);
+ for (--len; len > 0; --len)
+ if (isspace(line[len]) == 0)
+ {
+ ++len;
+ break;
+ }
+ line.erase(len);
+
+ if (line.empty() == true)
+ {
+ if (me->Server->Result != 416 && me->Server->StartPos != 0)
+ ;
+ else if (me->Server->Result == 416 && me->Server->Size == me->File->FileSize())
+ {
+ me->Server->Result = 200;
+ me->Server->StartPos = me->Server->Size;
+ }
+ else
+ me->Server->StartPos = 0;
+
+ me->File->Truncate(me->Server->StartPos);
+ me->File->Seek(me->Server->StartPos);
+ }
+ else if (me->Server->HeaderLine(line) == false)
+ return 0;
+
+ return size*nmemb;
+}
+
size_t
HttpsMethod::write_data(void *buffer, size_t size, size_t nmemb, void *userp)
{
HttpsMethod *me = (HttpsMethod *)userp;
+ if (me->Res.Size == 0)
+ me->URIStart(me->Res);
if(me->File->Write(buffer, size*nmemb) != true)
return false;
return size*nmemb;
}
-int
-HttpsMethod::progress_callback(void *clientp, double dltotal, double dlnow,
- double ultotal, double ulnow)
+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;
}
+// HttpsServerState::HttpsServerState - Constructor /*{{{*/
+HttpsServerState::HttpsServerState(URI Srv,HttpsMethod * /*Owner*/) : ServerState(Srv, NULL)
+{
+ TimeOut = _config->FindI("Acquire::https::Timeout",TimeOut);
+ Reset();
+}
+ /*}}}*/
+
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 (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 /*{{{*/
struct stat SBuf;
struct curl_slist *headers=NULL;
char curl_errorstr[CURL_ERROR_SIZE];
- long curl_responsecode;
URI Uri = Itm->Uri;
string remotehost = Uri.Host;
// 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, this);
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);
+ // options
curl_easy_setopt(curl, CURLOPT_NOPROGRESS, false);
- curl_easy_setopt(curl, CURLOPT_FAILONERROR, 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.
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-
- // 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.
// 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 - 1);
- 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).c_str());
+ headers = curl_slist_append(headers, Buf.c_str());
}
else if(Itm->LastModified > 0)
{
// 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 = new HttpsServerState(Itm->Uri, this);
+
// 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 != 0)
{
_error->Error("%s", curl_errorstr);
- // unlink, no need keep 401/404 page content in partial/
unlink(File->Name().c_str());
- Fail();
+ return false;
+ }
+
+ // server says file not modified
+ if (Server->Result == 304 || curl_condition_unmet == 1)
+ {
+ unlink(File->Name().c_str());
+ Res.IMSHit = true;
+ Res.LastModified = Itm->LastModified;
+ Res.Size = 0;
+ URIDone(Res);
return true;
}
+ 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("%s", err);
+ // unlink, no need keep 401/404 page content in partial/
+ unlink(File->Name().c_str());
+ return false;
}
- // check the downloaded result
- struct stat Buf;
- if (stat(File->Name().c_str(),&Buf) == 0)
+ struct stat resultStat;
+ if (unlikely(stat(File->Name().c_str(), &resultStat) != 0))
{
- 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;
+ _error->Errno("stat", "Unable to access file %s", File->Name().c_str());
+ return false;
+ }
+ Res.Size = resultStat.st_size;
+
+ // invalid range-request
+ if (Server->Result == 416)
+ {
+ unlink(File->Name().c_str());
+ Res.Size = 0;
+ delete File;
+ Redirect(Itm->Uri);
+ return true;
+ }
+
+ // 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);
Res.TakeHashes(Hash);
-
+
// keep apt updated
URIDone(Res);
// cleanup
Res.Size = 0;
delete File;
- curl_slist_free_all(headers);
return true;
-};
+}
int main()
{
HttpsMethod Mth;
curl_global_init(CURL_GLOBAL_SSL) ;
+ Mth.DropPrivsOrDie();
+
return Mth.Run();
}
-
projects / apt.git / blobdiff