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/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "get-freebusy-report.h"
#include <glib.h>
#include <curl/curl.h>
#include <string.h>
/**
* A static literal string containing the first part of the calendar query.
* The actual VEVENT to search for is added at runtime.
*/
static const char* getrange_request_head =
"<?xml version=\"1.0\" encoding=\"utf-8\" ?>"
"<C:free-busy-query xmlns:D=\"DAV:\""
" xmlns:C=\"urn:ietf:params:xml:ns:caldav\">";
/**
* A static literal string containing the last part of the calendar query
*/
static const char* getrange_request_foot =
"</C:free-busy-query>\r\n";
/**
* Function for getting freebusy within a time range from collection.
* @param settings A pointer to caldav_settings. @see caldav_settings
* @param error A pointer to caldav_error. @see caldav_error
* @return TRUE in case of error, FALSE otherwise.
*/
gboolean caldav_freebusy(caldav_settings* settings, caldav_error* error) {
CURL* curl;
CURLcode res = 0;
char error_buf[CURL_ERROR_SIZE + 1];
struct config_data data;
struct MemoryStruct chunk;
struct MemoryStruct headers;
struct curl_slist *http_header = NULL;
gboolean result = FALSE;
gchar* request = NULL;
chunk.memory = NULL; /* we expect realloc(NULL, size) to work */
chunk.size = 0; /* no data at this point */
headers.memory = NULL;
headers.size = 0;
curl = get_curl(settings);
if (!curl) {
error->code = -1;
error->str = g_strdup("Could not initialize libcurl");
g_free(settings->file);
settings->file = NULL;
return TRUE;
}
http_header = curl_slist_append(http_header,
"Content-Type: application/xml; charset=\"utf-8\"");
http_header = curl_slist_append(http_header, "Depth: 1");
http_header = curl_slist_append(http_header, "Expect:");
http_header = curl_slist_append(http_header, "Transfer-Encoding:");
http_header = curl_slist_append(http_header, "Connection: close");
data.trace_ascii = settings->trace_ascii;
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, http_header);
/* send all data to this function */
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
/* we pass our 'chunk' struct to the callback function */
curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
/* send all data to this function */
curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, WriteHeaderCallback);
/* we pass our 'headers' struct to the callback function */
curl_easy_setopt(curl, CURLOPT_WRITEHEADER, (void *)&headers);
curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, (char *) &error_buf);
if (settings->debug) {
curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, my_trace);
curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &data);
curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
}
request = g_strdup_printf(
"%s\r\n<C:time-range start=\"%s\"\r\n end=\"%s\"/>\r\n%s",
getrange_request_head, get_caldav_datetime(&settings->start),
get_caldav_datetime(&settings->end), getrange_request_foot);
/* enable uploading */
curl_easy_setopt(curl, CURLOPT_POSTFIELDS, request);
curl_easy_setopt (curl, CURLOPT_POSTFIELDSIZE, strlen(request));
curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "REPORT");
curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
res = curl_easy_perform(curl);
if (res != 0) {
error->code = -1;
error->str = g_strdup_printf("%s", error_buf);
g_free(settings->file);
settings->file = NULL;
result = TRUE;
}
else {
long code;
res = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
if (code != 200) {
error->code = code;
error->str = g_strdup(headers.memory);
result = TRUE;
}
else {
/*gchar* report;
report = parse_caldav_report(chunk.memory, "calendar-data", "VFREEBUSY");
settings->file = g_strdup(report);*/
settings->file = g_strdup(chunk.memory);
/*g_free(report);*/
}
}
g_free(request);
if (chunk.memory)
free(chunk.memory);
if (headers.memory)
free(headers.memory);
curl_slist_free_all(http_header);
curl_easy_cleanup(curl);
return result;
}
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