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138 lines
4.5 KiB
138 lines
4.5 KiB
/* Copyright (c) 2010 Timothy Pearson (kb9vqf@pearsoncomputing.net)
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* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include "options-carddav-server.h"
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#include <glib.h>
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#include <curl/curl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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/**
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* Function for getting supported options from a server.
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* @param curl A pointer to an initialized CURL instance
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* @param settings struct containing the URL to the server. If authentication
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* is required prior to making the call the credentials must be available
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* via CURLOPT_USERPWD before calling.
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* @param result A pointer to a struct _response. If test is true
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* this variable can be NULL. Caller is responsible for freeing associated
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* memory.
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* @param error A pointer to carddav_error. @see carddav_error
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* @param test if this is true response will be whether the server
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* represented by the URL is a CardDAV collection or not.
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* @return FALSE in case of error, TRUE otherwise.
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*/
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gboolean carddav_getoptions(CURL* curl, carddav_settings* settings, response* result,
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carddav_error* error, gboolean test) {
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CURLcode res = 0;
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char error_buf[CURL_ERROR_SIZE];
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struct MemoryStruct chunk;
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struct MemoryStruct headers;
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gboolean enabled = FALSE;
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if (! curl)
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return FALSE;
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if (!error) {
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error = (carddav_error *) malloc(sizeof(struct _carddav_error));
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memset(error, '\0', sizeof(struct _carddav_error));
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}
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chunk.memory = NULL; /* we expect realloc(NULL, size) to work */
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chunk.size = 0; /* no data at this point */
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headers.memory = NULL;
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headers.size = 0;
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/* send all data to this function */
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curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
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/* we pass our 'chunk' struct to the callback function */
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curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
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/* send all data to this function */
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curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, WriteHeaderCallback);
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/* we pass our 'chunk' struct to the callback function */
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curl_easy_setopt(curl, CURLOPT_WRITEHEADER, (void *)&headers);
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curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, (char *) &error_buf);
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curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "OPTIONS");
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curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
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curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
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curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
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if (settings->debug) {
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curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
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}
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res = curl_easy_perform(curl);
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if (res == 0) {
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gchar* head;
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head = get_response_header("DAV", headers.memory, TRUE);
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if (head && strstr(head, "addressbook") != NULL) {
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enabled = TRUE;
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if (! test) {
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result->msg = g_strdup(
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get_response_header("Allow", headers.memory, FALSE));
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}
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}
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else {
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long code;
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res = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
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if (code == 200) {
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error->code = -1;
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error->str = g_strdup("URL is not a CardDAV resource");
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}
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else {
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error->code = -1 * code;
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error->str = g_strdup(headers.memory);
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}
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}
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g_free(head);
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}
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else if (
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(res == CURLE_SSL_CONNECT_ERROR ||
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CURLE_PEER_FAILED_VERIFICATION ||
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CURLE_SSL_ENGINE_NOTFOUND ||
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CURLE_SSL_ENGINE_SETFAILED ||
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CURLE_SSL_CERTPROBLEM ||
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CURLE_SSL_CIPHER ||
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CURLE_SSL_CACERT ||
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CURLE_SSL_CACERT_BADFILE ||
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CURLE_SSL_CRL_BADFILE ||
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CURLE_SSL_ISSUER_ERROR) && settings->usehttps) {
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error->code = -2;
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error->str = g_strdup(error_buf);
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}
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else if (res == CURLE_COULDNT_RESOLVE_HOST) {
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error->code = -3;
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error->str = g_strdup("Could not resolve host");
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}
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else if (res == CURLE_COULDNT_CONNECT) {
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error->code = -4;
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error->str = g_strdup("Unable to connect");
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}
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else {
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error->code = -1;
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error->str = g_strdup("URL is not a CardDAV resource");
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}
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if (chunk.memory)
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free(chunk.memory);
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if (headers.memory)
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free(headers.memory);
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curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "GET");
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return enabled;
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}
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