add config setting for User-Agent in http and https to the Acquire group,

thanks Timothy J. Miller! (Closes: #355782)

debian/changelog

@@ -63,6 +63,9 @@ apt (0.7.25) UNRELEASED; urgency=low
   * cmdline/apt-mark:
     - print an error if a new state file can't be created,
       thanks Carl Chenet! (Closes: #521289)
+  * methods/http{,s}.cc
+    - add config setting for User-Agent to the Acquire group,
+      thanks Timothy J. Miller! (Closes: #355782)
 
   [ Chris Leick ]
   * doc/ various manpages:

doc/apt.conf.5.xml

@@ -275,7 +275,12 @@ DPkg::Pre-Install-Pkgs {"/usr/sbin/dpkg-preconfigure --apt";};
      <para>The used bandwidth can be limited with <literal>Acquire::http::Dl-Limit</literal>
      which accepts integer values in kilobyte. The default value is 0 which deactivates
      the limit and tries uses as much as possible of the bandwidth (Note that this option implicit
-     deactivates the download from multiple servers at the same time.)</para></listitem>
+     deactivates the download from multiple servers at the same time.)</para>
+
+     <para><literal>Acquire::http::User-Agent</literal> can be used to set a different
+     User-Agent for the http download method as some proxies allow access for clients
+     only if the client uses a known identifier.</para>
+     </listitem>
      </varlistentry>
 
      <varlistentry><term>https</term>

doc/examples/configure-index

@@ -191,6 +191,7 @@ Acquire
     Max-Age "86400";     // 1 Day age on index files
     No-Store "false";    // Prevent the cache from storing archives    
     Dl-Limit "7";        // 7Kb/sec maximum download rate
+    User-Agent "Debian APT-HTTP/1.3";
   };
 
   // HTTPS method configuration:
@@ -204,6 +205,8 @@ Acquire
         CaPath  "/etc/ssl/certs";
         Verify-Host" "true";
         AllowRedirect  "true";
+
+        User-Agent "Debian APT-CURL/1.0";
   };
 
   ftp

methods/http.cc

@@ -728,7 +728,8 @@ void HttpMethod::SendReq(FetchItem *Itm,CircleBuf &Out)
       Req += string("Authorization: Basic ") + 
           Base64Encode(Uri.User + ":" + Uri.Password) + "\r\n";
    
-   Req += "User-Agent: Debian APT-HTTP/1.3 ("VERSION")\r\n\r\n";
+   Req += "User-Agent: " + _config->Find("Acquire::http::User-Agent",
+		"Debian APT-HTTP/1.3 ("VERSION")") + "\r\n\r\n";
    
    if (Debug == true)
       cerr << Req << endl;

methods/https.cc

@@ -209,7 +209,10 @@ bool HttpsMethod::Fetch(FetchItem *Itm)
       curl_easy_setopt(curl, CURLOPT_MAX_RECV_SPEED_LARGE, dlLimit);
 
    // set header
-   curl_easy_setopt(curl, CURLOPT_USERAGENT,"Debian APT-CURL/1.0 ("VERSION")");
+   curl_easy_setopt(curl, CURLOPT_USERAGENT,
+	_config->Find("Acquire::https::User-Agent",
+		_config->Find("Acquire::http::User-Agent",
+			"Debian APT-CURL/1.0 ("VERSION")")));
 
    // set timeout
    int timeout = _config->FindI("Acquire::http::Timeout",120);