91 lines
2.5 KiB
C
91 lines
2.5 KiB
C
/*
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* Copyright 2007 Daniel Silverstone <dsilvers@digital-scurf.org>
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* Copyright 2007 Rob Kendrick <rjek@netsurf-browser.org>
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*
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* This file is part of NetSurf, http://www.netsurf-browser.org/
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*
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* NetSurf 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; version 2 of the License.
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*
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* NetSurf 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, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include "utils/config.h"
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#include "utils/utsname.h"
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#include "desktop/version.h"
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#include "utils/log.h"
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#include "utils/useragent.h"
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static const char *core_user_agent_string = NULL;
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#ifndef NETSURF_UA_FORMAT_STRING
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#define NETSURF_UA_FORMAT_STRING "NetSurf/%d.%d (%s)"
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#endif
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/**
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* Prepare core_user_agent_string with a string suitable for use as a
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* user agent in HTTP requests.
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*/
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static void
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user_agent_build_string(void)
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{
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struct utsname un;
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const char *sysname = "Unknown";
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char *ua_string;
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int len;
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if (uname(&un) >= 0) {
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sysname = un.sysname;
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}
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len = snprintf(NULL, 0, NETSURF_UA_FORMAT_STRING,
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netsurf_version_major,
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netsurf_version_minor,
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sysname);
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ua_string = malloc(len + 1);
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if (!ua_string) {
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/** \todo this needs handling better */
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return;
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}
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snprintf(ua_string, len + 1,
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NETSURF_UA_FORMAT_STRING,
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netsurf_version_major,
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netsurf_version_minor,
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sysname);
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core_user_agent_string = ua_string;
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NSLOG(netsurf, INFO, "Built user agent \"%s\"",
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core_user_agent_string);
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}
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/* This is a function so that later we can override it trivially */
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const char *
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user_agent_string(void)
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{
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if (core_user_agent_string == NULL)
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user_agent_build_string();
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return core_user_agent_string;
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}
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/* Public API documented in useragent.h */
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void
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free_user_agent_string(void)
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{
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if (core_user_agent_string != NULL) {
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/* Nasty cast because we need to de-const it to free it */
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free((void *)core_user_agent_string);
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core_user_agent_string = NULL;
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}
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}
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