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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* Copyright (C) 2001-2004 Novell, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU Lesser General Public
* License as published by the Free Software Foundation.
*
* 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 Lesser General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "e2k-http-utils.h"
#include <libedataserver/e-time-utils.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
extern const char *e2k_rfc822_months [];
/**
* e2k_http_parse_date:
* @date: an HTTP Date header, returned from Exchange
*
* Converts an HTTP Date header into a time_t value. Doesn't
* do much sanity checking on the format since we know IIS always
* returns the date in RFC 1123 format, not either of the other two
* allowable formats.
*
* Return value: a %time_t corresponding to @date.
**/
time_t
e2k_http_parse_date (const char *date)
{
struct tm tm;
char *p;
if (strlen (date) < 29 || date[3] != ',' || date[4] != ' ')
return -1;
memset (&tm, 0, sizeof (tm));
p = (char *)date + 5;
tm.tm_mday = strtol (p, &p, 10);
p++;
for (tm.tm_mon = 0; tm.tm_mon < 12; tm.tm_mon++) {
if (!strncmp (p, e2k_rfc822_months[tm.tm_mon], 3))
break;
}
p += 3;
tm.tm_year = strtol (p, &p, 10) - 1900;
tm.tm_hour = strtol (p, &p, 10);
p++;
tm.tm_min = strtol (p, &p, 10);
p++;
tm.tm_sec = strtol (p, &p, 10);
return e_mktime_utc (&tm);
}
/**
* e2k_http_parse_status:
* @status_line: an HTTP Status-Line
*
* Parses an HTTP Status-Line and returns the Status-Code
*
* Return value: the Status-Code portion of @status_line
**/
E2kHTTPStatus
e2k_http_parse_status (const char *status_line)
{
if (strncmp (status_line, "HTTP/1.", 7) != 0 ||
!isdigit (status_line[7]) ||
status_line[8] != ' ')
return E2K_HTTP_MALFORMED;
return atoi (status_line + 9);
}
/**
* e2k_http_accept_language:
*
* Generates an Accept-Language value to send to the Exchange server.
* The user's default folders (Inbox, Calendar, etc) are not created
* until the user connects to Exchange for the first time, and in that
* case, it needs to know what language to name the folders in.
* libexchange users are responsible for setting the Accept-Language
* header on any request that could be the first-ever request to a
* mailbox. (Exchange will return 401 Unauthorized if it receives a
* request with no Accept-Language header for an uninitialized
* mailbox.)
*
* Return value: an Accept-Language string.
**/
const char *
e2k_http_accept_language (void)
{
static char *accept = NULL;
if (!accept) {
GString *buf;
const char *lang, *sub;
int baselen;
buf = g_string_new (NULL);
lang = getenv ("LANG");
if (!lang || !strcmp (lang, "C") || !strcmp (lang, "POSIX"))
lang = "en";
/* lang is "language[_territory][.codeset][@modifier]",
* eg "fr" or "de_AT.utf8@euro". The Accept-Language
* header should be a comma-separated list of
* "language[-territory]". For the above cases we'd
* generate "fr, en" and "de-AT, de, en". (We always
* include "en" in case the server doesn't support the
* user's preferred locale.)
*/
baselen = strcspn (lang, "_.@");
g_string_append_len (buf, lang, baselen);
if (lang[baselen] == '_') {
sub = lang + baselen + 1;
g_string_append_c (buf, '-');
g_string_append_len (buf, sub, strcspn (sub, ".@"));
g_string_append (buf, ", ");
g_string_append_len (buf, lang, baselen);
}
if (baselen != 2 || strncmp (lang, "en", 2) != 0)
g_string_append (buf, ", en");
accept = buf->str;
g_string_free (buf, FALSE);
}
return accept;
}
typedef struct {
const char *wanted_header;
GSList *matches;
} GetHeadersData;
static void
maybe_append_header (const char *header_name, const char *value, gpointer data)
{
GetHeadersData *ghd = data;
if (!g_ascii_strcasecmp (header_name, ghd->wanted_header))
ghd->matches = g_slist_append (ghd->matches, (char *)value);
}
/* This is a cheat to recreate the behavior of libsoup 2.2's
* soup_message_get_header_list. See the docs for
* soup_message_headers_get() for an explanation of why we shouldn't
* be doing this...
*/
GSList *
e2k_http_get_headers (SoupMessageHeaders *hdrs, const char *header_name)
{
GetHeadersData ghd;
ghd.wanted_header = header_name;
ghd.matches = NULL;
soup_message_headers_foreach (hdrs, maybe_append_header, &ghd);
return ghd.matches;
}
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