+ return GNUNET_YES;
+}
+
+/**
+ * convert integer to string representation
+ *
+ * @param i integer
+ * @return the character
+ */
+char i_to_hexchar (char i)
+{
+ static char hexmap[] = "0123456789abcdef";
+ GNUNET_assert (sizeof (hexmap) > (i & 15));
+ return hexmap[i & 15];
+}
+
+/**
+ * Escape given 0-terminated string
+ *
+ * @param to_esc string to escapse
+ * @return allocated new escaped string (MUST free!)
+ */
+static char*
+escape_to_urlenc (const char *to_esc)
+{
+ char *pos = (char*)to_esc;
+ char *res = GNUNET_malloc (strlen (to_esc) * 3 + 1);
+ char *rpos = res;
+
+ while ('\0' != *pos)
+ {
+ if (isalnum (*pos) ||
+ ('-' == *pos) || ('_' == *pos) ||
+ ('.' == *pos) || ('~' == *pos))
+ *rpos++ = *pos;
+ else if (' ' == *pos)
+ *rpos++ = '+';
+ else
+ {
+ *rpos++ = '%';
+ *rpos++ = i_to_hexchar (*pos >> 4);
+ *rpos++ = i_to_hexchar (*pos >> 15);
+ }
+ pos++;
+ }
+ *rpos = '\0';
+ return res;
+}
+
+static int
+con_post_data_iter (void *cls,
+ enum MHD_ValueKind kind,
+ const char *key,
+ const char *filename,
+ const char *content_type,
+ const char *transfer_encoding,
+ const char *data,
+ uint64_t off,
+ size_t size)
+{
+ struct ProxyCurlTask* ctask = cls;
+ struct ProxyUploadData* pdata;
+ char* enc;
+ char* new_value;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Got POST data: '%s : %s' at offset %llu size %lld\n",
+ key, data, off, size);
+
+ GNUNET_assert (NULL != ctask->post_type);
+
+ if (0 == strcasecmp (MHD_HTTP_POST_ENCODING_MULTIPART_FORMDATA,
+ ctask->post_type))
+ {
+ ctask->is_httppost = GNUNET_YES;
+ /* new part */
+ if (0 == off)
+ {
+ pdata = GNUNET_malloc (sizeof (struct ProxyUploadData));
+ pdata->key = strdup (key);
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Copied %lld\n");
+
+ if (NULL != filename)
+ {
+ pdata->filename = strdup (filename);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Filename %s\n", filename);
+ }
+
+ if (NULL != content_type)
+ {
+ pdata->content_type = strdup (content_type);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Content-Type %s\n", content_type);
+ }
+
+ pdata->value = GNUNET_malloc (size);
+ pdata->total_bytes = size;
+ memcpy (pdata->value, data, size);
+ GNUNET_CONTAINER_DLL_insert_tail (ctask->upload_data_head,
+ ctask->upload_data_tail,
+ pdata);
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Copied %lld bytes of POST Data\n", size);
+ return MHD_YES;
+ }
+
+ pdata = ctask->upload_data_tail;
+ new_value = GNUNET_malloc (size + pdata->total_bytes);
+ memcpy (new_value, pdata->value, pdata->total_bytes);
+ memcpy (new_value+off, data, size);
+ GNUNET_free (pdata->value);
+ pdata->value = new_value;
+ pdata->total_bytes += size;
+
+ return MHD_YES;
+
+ }
+
+ if (0 != strcasecmp (MHD_HTTP_POST_ENCODING_FORM_URLENCODED,
+ ctask->post_type))
+ {
+ return MHD_NO;
+ }
+
+ ctask->is_httppost = GNUNET_NO;
+
+ if (NULL != ctask->curl)
+ curl_easy_pause (ctask->curl, CURLPAUSE_CONT);
+
+ if (0 == off)
+ {
+ /* a key */
+ pdata = GNUNET_malloc (sizeof (struct ProxyUploadData));
+ enc = escape_to_urlenc (key);
+ pdata->value = GNUNET_malloc (strlen (enc) + 3);
+ if (NULL != ctask->upload_data_head)
+ {
+ pdata->value[0] = '&';
+ memcpy (pdata->value+1, enc, strlen (enc));
+ }
+ else
+ memcpy (pdata->value, enc, strlen (enc));
+ pdata->value[strlen (pdata->value)] = '=';
+ pdata->bytes_left = strlen (pdata->value);
+ pdata->total_bytes = pdata->bytes_left;
+ GNUNET_free (enc);
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Escaped POST key: '%s'\n",
+ pdata->value);
+
+ GNUNET_CONTAINER_DLL_insert_tail (ctask->upload_data_head,
+ ctask->upload_data_tail,
+ pdata);
+ }
+
+ /* a value */
+ pdata = GNUNET_malloc (sizeof (struct ProxyUploadData));
+ enc = escape_to_urlenc (data);
+ pdata->value = GNUNET_malloc (strlen (enc) + 1);
+ memcpy (pdata->value, enc, strlen (enc));
+ pdata->bytes_left = strlen (pdata->value);
+ pdata->total_bytes = pdata->bytes_left;
+ GNUNET_free (enc);
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Escaped POST value: '%s'\n",
+ pdata->value);
+
+ GNUNET_CONTAINER_DLL_insert_tail (ctask->upload_data_head,
+ ctask->upload_data_tail,
+ pdata);
+ return MHD_YES;
+}
+
+
+/**
+ * Read HTTP request header field 'Host'
+ *
+ * @param cls buffer to write to
+ * @param kind value kind
+ * @param key field key
+ * @param value field value
+ * @return MHD_NO when Host found
+ */
+static int
+con_val_iter (void *cls,
+ enum MHD_ValueKind kind,
+ const char *key,
+ const char *value)
+{
+ struct ProxyCurlTask *ctask = cls;
+ char* buf = ctask->host;
+ char* port;
+ char* cstr;
+ const char* hdr_val;
+ unsigned int uport;
+
+ if (0 == strcmp ("Host", key))
+ {
+ port = strstr (value, ":");
+ if (NULL != port)
+ {
+ strncpy (buf, value, port-value);
+ port++;
+ if ((1 != sscanf (port, "%u", &uport)) ||
+ (uport > UINT16_MAX) ||
+ (0 == uport))
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Unable to parse port!\n");
+ else
+ ctask->port = (uint16_t) uport;
+ }
+ else
+ strcpy (buf, value);
+ return MHD_YES;
+ }
+
+ if (0 == strcmp ("Accept-Encoding", key))
+ hdr_val = "";
+ else
+ hdr_val = value;
+
+ if (0 == strcasecmp (MHD_HTTP_HEADER_CONTENT_TYPE,
+ key))
+ {
+ if (0 == strncasecmp (value,
+ MHD_HTTP_POST_ENCODING_FORM_URLENCODED,
+ strlen (MHD_HTTP_POST_ENCODING_FORM_URLENCODED)))
+ ctask->post_type = MHD_HTTP_POST_ENCODING_FORM_URLENCODED;
+ else if (0 == strncasecmp (value,
+ MHD_HTTP_POST_ENCODING_MULTIPART_FORMDATA,
+ strlen (MHD_HTTP_POST_ENCODING_MULTIPART_FORMDATA)))
+ ctask->post_type = MHD_HTTP_POST_ENCODING_MULTIPART_FORMDATA;
+ else
+ ctask->post_type = NULL;
+
+ }
+
+ cstr = GNUNET_malloc (strlen (key) + strlen (hdr_val) + 3);
+ GNUNET_snprintf (cstr, strlen (key) + strlen (hdr_val) + 3,
+ "%s: %s", key, hdr_val);
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Client Header: %s\n", cstr);
+
+ ctask->headers = curl_slist_append (ctask->headers, cstr);
+ GNUNET_free (cstr);
+
+ return MHD_YES;
+}
+
+
+/**
+ * Callback for MHD response
+ *
+ * @param cls closure
+ * @param pos in buffer
+ * @param buf buffer
+ * @param max space in buffer
+ * @return number of bytes written
+ */
+static ssize_t
+mhd_content_cb (void *cls,
+ uint64_t pos,
+ char* buf,
+ size_t max);
+
+/**
+ * Check HTTP response header for mime
+ *
+ * @param buffer curl buffer
+ * @param size curl blocksize
+ * @param nmemb curl blocknumber
+ * @param cls handle
+ * @return size of read bytes
+ */
+static size_t
+curl_check_hdr (void *buffer, size_t size, size_t nmemb, void *cls)
+{
+ size_t bytes = size * nmemb;
+ struct ProxyCurlTask *ctask = cls;
+ int html_mime_len = strlen (HTML_HDR_CONTENT);
+ int cookie_hdr_len = strlen (MHD_HTTP_HEADER_SET_COOKIE);
+ char hdr_mime[html_mime_len+1];
+ char hdr_generic[bytes+1];
+ char new_cookie_hdr[bytes+strlen (ctask->leho)+1];
+ char new_location[MAX_HTTP_URI_LENGTH+500];
+ char real_host[264];
+ char leho_host[264];
+ char* ndup;
+ char* tok;
+ char* cookie_domain;
+ char* hdr_type;
+ char* hdr_val;
+ int delta_cdomain;
+ size_t offset = 0;
+ char cors_hdr[strlen (ctask->leho) + strlen ("https://")];
+
+ if (NULL == ctask->response)
+ {
+ /* FIXME: get total size from curl (if available) */
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Creating response for %s\n", ctask->url);
+ ctask->response = MHD_create_response_from_callback (MHD_SIZE_UNKNOWN,
+ sizeof (ctask->buffer),
+ &mhd_content_cb,
+ ctask,
+ NULL);
+
+ /* if we have a leho add a CORS header */
+ if (0 != strcmp ("", ctask->leho))
+ {
+ /* We could also allow ssl and http here */
+ if (ctask->mhd->is_ssl)
+ sprintf (cors_hdr, "https://%s", ctask->leho);
+ else
+ sprintf (cors_hdr, "http://%s", ctask->leho);
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "MHD: Adding CORS header field %s\n",
+ cors_hdr);
+
+ if (GNUNET_NO == MHD_add_response_header (ctask->response,
+ "Access-Control-Allow-Origin",
+ cors_hdr))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "MHD: Error adding CORS header field %s\n",
+ cors_hdr);
+ }
+ }
+ ctask->ready_to_queue = GNUNET_YES;
+ }
+
+ if (html_mime_len <= bytes)
+ {
+ memcpy (hdr_mime, buffer, html_mime_len);
+ hdr_mime[html_mime_len] = '\0';
+
+ if (0 == strcmp (hdr_mime, HTML_HDR_CONTENT))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Got HTML HTTP response header\n");
+ ctask->parse_content = GNUNET_YES;
+ }
+ }
+
+ if (cookie_hdr_len > bytes)
+ return bytes;
+
+ memcpy (hdr_generic, buffer, bytes);
+ hdr_generic[bytes] = '\0';
+ /* remove crlf */
+ if ('\n' == hdr_generic[bytes-1])
+ hdr_generic[bytes-1] = '\0';
+
+ if (hdr_generic[bytes-2] == '\r')
+ hdr_generic[bytes-2] = '\0';
+
+ if (0 == memcmp (hdr_generic,
+ MHD_HTTP_HEADER_SET_COOKIE,
+ cookie_hdr_len))
+ {
+ ndup = GNUNET_strdup (hdr_generic+cookie_hdr_len+1);
+ memset (new_cookie_hdr, 0, sizeof (new_cookie_hdr));
+ tok = strtok (ndup, ";");
+
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "Looking for cookie in : %s\n", hdr_generic);
+
+ for (; tok != NULL; tok = strtok (NULL, ";"))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "Got Cookie token: %s\n", tok);
+ //memcpy (new_cookie_hdr+offset, tok, strlen (tok));
+ if (0 == memcmp (tok, " domain", strlen (" domain")))
+ {
+ cookie_domain = tok + strlen (" domain") + 1;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "Got Set-Cookie Domain: %s\n", cookie_domain);
+
+ if (strlen (cookie_domain) < strlen (ctask->leho))
+ {
+ delta_cdomain = strlen (ctask->leho) - strlen (cookie_domain);
+ if (0 == strcmp (cookie_domain, ctask->leho + (delta_cdomain)))
+ {
+ GNUNET_snprintf (new_cookie_hdr+offset,
+ sizeof (new_cookie_hdr),
+ " domain=%s", ctask->authority);
+ offset += strlen (" domain=") + strlen (ctask->authority);
+ new_cookie_hdr[offset] = ';';
+ offset++;
+ continue;
+ }
+ }
+ else if (strlen (cookie_domain) == strlen (ctask->leho))
+ {
+ if (0 == strcmp (cookie_domain, ctask->leho))
+ {
+ GNUNET_snprintf (new_cookie_hdr+offset,
+ sizeof (new_cookie_hdr),
+ " domain=%s", ctask->host);
+ offset += strlen (" domain=") + strlen (ctask->host);
+ new_cookie_hdr[offset] = ';';
+ offset++;
+ continue;
+ }
+ }
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Cookie domain invalid\n");
+
+
+ }
+ memcpy (new_cookie_hdr+offset, tok, strlen (tok));
+ offset += strlen (tok);
+ new_cookie_hdr[offset] = ';';
+ offset++;
+ }
+
+ GNUNET_free (ndup);
+
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "Got Set-Cookie HTTP header %s\n", new_cookie_hdr);
+
+ if (GNUNET_NO == MHD_add_response_header (ctask->response,
+ MHD_HTTP_HEADER_SET_COOKIE,
+ new_cookie_hdr))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "MHD: Error adding set-cookie header field %s\n",
+ hdr_generic+cookie_hdr_len+1);
+ }
+ return bytes;
+ }
+
+ ndup = GNUNET_strdup (hdr_generic);
+ hdr_type = strtok (ndup, ":");
+
+ if (NULL == hdr_type)
+ {
+ GNUNET_free (ndup);
+ return bytes;
+ }
+
+ hdr_val = strtok (NULL, "");
+
+ if (NULL == hdr_val)
+ {
+ GNUNET_free (ndup);
+ return bytes;
+ }
+
+ hdr_val++;
+
+ if (0 == strcasecmp (MHD_HTTP_HEADER_LOCATION, hdr_type))
+ {
+ if (ctask->mhd->is_ssl)
+ {
+ sprintf (leho_host, "https://%s", ctask->leho);
+ sprintf (real_host, "https://%s", ctask->host);
+ }
+ else
+ {
+ sprintf (leho_host, "http://%s", ctask->leho);
+ sprintf (real_host, "http://%s", ctask->host);
+ }
+
+ if (0 == memcmp (leho_host, hdr_val, strlen (leho_host)))
+ {
+ sprintf (new_location, "%s%s", real_host, hdr_val+strlen (leho_host));
+ hdr_val = new_location;
+ }
+ }
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Trying to set %s: %s\n",
+ hdr_type,
+ hdr_val);
+ if (GNUNET_NO == MHD_add_response_header (ctask->response,
+ hdr_type,
+ hdr_val))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "MHD: Error adding %s header field %s\n",
+ hdr_type,
+ hdr_val);
+ }
+ GNUNET_free (ndup);
+ return bytes;
+}
+
+/**
+ * schedule mhd
+ *
+ * @param hd a http daemon list entry
+ */
+static void
+run_httpd (struct MhdHttpList *hd);
+
+
+/**
+ * schedule all mhds
+ *
+ */
+static void
+run_httpds (void);
+
+/**
+ * Task run whenever HTTP server operations are pending.
+ *
+ * @param cls unused
+ * @param tc sched context
+ */
+static void
+do_httpd (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext *tc);
+
+static void
+run_mhd_now (struct MhdHttpList *hd)
+{
+ if (GNUNET_SCHEDULER_NO_TASK != hd->httpd_task)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "MHD: killing old task\n");
+ GNUNET_SCHEDULER_cancel (hd->httpd_task);
+ }
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "MHD: Scheduling MHD now\n");
+ hd->httpd_task = GNUNET_SCHEDULER_add_now (&do_httpd, hd);
+}
+
+/**
+ * Ask cURL for the select sets and schedule download
+ */
+static void
+curl_download_prepare ();
+
+/**
+ * Callback to free content
+ *
+ * @param cls content to free
+ * @param tc task context
+ */
+static void
+mhd_content_free (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct ProxyCurlTask *ctask = cls;
+ struct ProxyUploadData *pdata;
+
+ GNUNET_assert (NULL == ctask->pp_match_head);
+ if (NULL != ctask->headers)
+ curl_slist_free_all (ctask->headers);
+
+ if (NULL != ctask->headers)
+ curl_slist_free_all (ctask->resolver);
+
+ if (NULL != ctask->response)
+ MHD_destroy_response (ctask->response);
+
+ if (NULL != ctask->post_handler)
+ MHD_destroy_post_processor (ctask->post_handler);
+
+ for (pdata = ctask->upload_data_head; NULL != pdata; pdata = ctask->upload_data_head)
+ {
+ GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
+ ctask->upload_data_tail,
+ pdata);
+ GNUNET_free_non_null (pdata->filename);
+ GNUNET_free_non_null (pdata->content_type);
+ GNUNET_free_non_null (pdata->key);
+ GNUNET_free_non_null (pdata->value);
+ GNUNET_free (pdata);
+ }
+ GNUNET_free (ctask);
+}
+
+
+/**
+ * Callback for MHD response
+ *
+ * @param cls closure
+ * @param pos in buffer
+ * @param buf buffer
+ * @param max space in buffer
+ * @return number of bytes written
+ */
+static ssize_t
+mhd_content_cb (void *cls,
+ uint64_t pos,
+ char* buf,
+ size_t max)
+{
+ struct ProxyCurlTask *ctask = cls;
+ struct ProxyREMatch *re_match;
+ ssize_t copied = 0;
+ long long int bytes_to_copy = ctask->buffer_write_ptr - ctask->buffer_read_ptr;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "MHD: content cb for %s. To copy: %lld\n",
+ ctask->url, bytes_to_copy);
+ GNUNET_assert (bytes_to_copy >= 0);
+
+ if ((GNUNET_YES == ctask->download_is_finished) &&
+ (GNUNET_NO == ctask->download_error) &&
+ (0 == bytes_to_copy)) /* &&
+ (BUF_WAIT_FOR_CURL == ctask->buf_status))*/
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "MHD: sending response for %s\n", ctask->url);
+ ctask->download_in_progress = GNUNET_NO;
+ run_mhd_now (ctask->mhd);
+ GNUNET_SCHEDULER_add_now (&mhd_content_free, ctask);
+ total_mhd_connections--;
+ return MHD_CONTENT_READER_END_OF_STREAM;
+ }
+
+ if ((GNUNET_YES == ctask->download_error) &&
+ (GNUNET_YES == ctask->download_is_finished) &&
+ (0 == bytes_to_copy)) /* &&
+ (BUF_WAIT_FOR_CURL == ctask->buf_status))*/
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "MHD: sending error response\n");
+ ctask->download_in_progress = GNUNET_NO;
+ run_mhd_now (ctask->mhd);
+ GNUNET_SCHEDULER_add_now (&mhd_content_free, ctask);
+ total_mhd_connections--;
+ return MHD_CONTENT_READER_END_WITH_ERROR;
+ }
+
+ if ( ctask->buf_status == BUF_WAIT_FOR_CURL )
+ return 0;
+
+ copied = 0;
+ for (re_match = ctask->pp_match_head; NULL != re_match; re_match = ctask->pp_match_head)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "MHD: Processing PP %s\n",
+ re_match->hostname);
+ bytes_to_copy = re_match->start - ctask->buffer_read_ptr;
+ GNUNET_assert (bytes_to_copy >= 0);
+
+ if (bytes_to_copy+copied > max)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "MHD: buffer in response too small for %d. Using available space (%d). (%s)\n",
+ bytes_to_copy,
+ max,
+ ctask->url);
+ memcpy (buf+copied, ctask->buffer_read_ptr, max-copied);
+ ctask->buffer_read_ptr += max-copied;
+ copied = max;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "MHD: copied %d bytes\n", copied);
+ return copied;
+ }
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "MHD: copying %d bytes to mhd response at offset %d\n",
+ bytes_to_copy, ctask->buffer_read_ptr);
+ memcpy (buf+copied, ctask->buffer_read_ptr, bytes_to_copy);
+ copied += bytes_to_copy;
+
+ if (GNUNET_NO == re_match->done)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "MHD: Waiting for PP of %s\n", re_match->hostname);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "MHD: copied %d bytes\n", copied);
+ ctask->buffer_read_ptr += bytes_to_copy;
+ return copied;
+ }
+
+ if (strlen (re_match->result) > (max - copied))
+ {
+ //FIXME partially copy domain here
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "MHD: buffer in response too small for %s! (%s)\n",
+ re_match->result,
+ ctask->url);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "MHD: copied %d bytes\n", copied);
+ ctask->buffer_read_ptr += bytes_to_copy;
+ return copied;
+ }
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "MHD: Adding PP result %s to buffer\n",
+ re_match->result);
+ memcpy (buf+copied, re_match->result, strlen (re_match->result));
+ copied += strlen (re_match->result);
+ ctask->buffer_read_ptr = re_match->end;
+ GNUNET_CONTAINER_DLL_remove (ctask->pp_match_head,
+ ctask->pp_match_tail,
+ re_match);
+ GNUNET_free (re_match);
+ }
+
+ bytes_to_copy = ctask->buffer_write_ptr - ctask->buffer_read_ptr;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "MHD: copied: %d left: %d, space left in buf: %d\n",
+ copied,
+ bytes_to_copy, max-copied);
+
+ GNUNET_assert (0 <= bytes_to_copy);
+
+ if (GNUNET_NO == ctask->download_is_finished)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "MHD: Purging buffer\n");
+ memmove (ctask->buffer, ctask->buffer_read_ptr, bytes_to_copy);
+ ctask->buffer_read_ptr = ctask->buffer;
+ ctask->buffer_write_ptr = ctask->buffer + bytes_to_copy;
+ ctask->buffer[bytes_to_copy] = '\0';
+ }
+
+ if (bytes_to_copy+copied > max)
+ bytes_to_copy = max-copied;
+
+ if (0 > bytes_to_copy)
+ bytes_to_copy = 0;
+
+ memcpy (buf+copied, ctask->buffer_read_ptr, bytes_to_copy);
+ ctask->buffer_read_ptr += bytes_to_copy;
+ copied += bytes_to_copy;
+ ctask->buf_status = BUF_WAIT_FOR_CURL;
+
+ if (NULL != ctask->curl)
+ curl_easy_pause (ctask->curl, CURLPAUSE_CONT);
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "MHD: copied %d bytes\n", copied);
+ run_mhd_now (ctask->mhd);
+ return copied;
+}
+
+
+/**
+ * Shorten result callback
+ *
+ * @param cls the proxycurltask
+ * @param short_name the shortened name (NULL on error)
+ */
+static void
+process_shorten (void* cls, const char* short_name)
+{
+ struct ProxyREMatch *re_match = cls;
+ char result[sizeof (re_match->result)];
+
+ if (NULL == short_name)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "PP: Unable to shorten %s\n",
+ re_match->hostname);
+ GNUNET_CONTAINER_DLL_remove (re_match->ctask->pp_match_head,
+ re_match->ctask->pp_match_tail,
+ re_match);
+ GNUNET_free (re_match);
+ return;
+ }
+
+ if (0 == strcmp (short_name, re_match->ctask->leho))
+ strcpy (result, re_match->ctask->host);
+ else
+ strcpy (result, short_name);
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "PP: Shorten %s -> %s\n",
+ re_match->hostname,
+ result);
+
+ if (re_match->ctask->mhd->is_ssl)
+ sprintf (re_match->result, "href=\"https://%s", result);
+ else
+ sprintf (re_match->result, "href=\"http://%s", result);
+
+ re_match->done = GNUNET_YES;
+ run_mhd_now (re_match->ctask->mhd);