DropPrivs: Move the re-set uid/gid thing to the end of the function

[apt.git] / methods / https.cc

diff --git a/methods/https.cc b/methods/https.cc
index e16e363397e0c874d5e52735e5fde22eecabc949..a74d2a38be4ba416ee7f1bfffbc1fdc3e43a9e0a 100644 (file)
--- 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
 
@@ -18,19 +18,21 @@
 #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 <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;
@@ -75,26 +77,27 @@ 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)
+HttpsServerState::HttpsServerState(URI Srv,HttpsMethod * /*Owner*/) : ServerState(Srv, NULL)
 {
    TimeOut = _config->FindI("Acquire::https::Timeout",TimeOut);
    Reset();
@@ -105,6 +108,9 @@ 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
@@ -184,8 +190,12 @@ bool HttpsMethod::Fetch(FetchItem *Itm)
    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_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.
@@ -304,7 +314,7 @@ 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 +329,11 @@ 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).c_str());
+      headers = curl_slist_append(headers, Buf.c_str());
    }
    else if(Itm->LastModified > 0)
    {
@@ -404,11 +414,11 @@ bool HttpsMethod::Fetch(FetchItem *Itm)
    curl_easy_getinfo(curl, CURLINFO_FILETIME, &Res.LastModified);
    if (Res.LastModified != -1)
    {
-      struct timespec times[2];
+      struct timeval 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);
+      times[0].tv_usec = times[1].tv_usec = 0;
+      utimes(File->Name().c_str(), times);
    }
    else
       Res.LastModified = resultStat.st_mtime;
@@ -427,7 +437,7 @@ bool HttpsMethod::Fetch(FetchItem *Itm)
    delete File;
 
    return true;
-};
+}
 
 int main()
 {
@@ -436,6 +446,8 @@ int main()
    HttpsMethod Mth;
    curl_global_init(CURL_GLOBAL_SSL) ;
 
+   Mth.DropPrivsOrDie();
+
    return Mth.Run();
 }