From 5426a708a9010d04cf8baed45ce9909a09088ef6 Mon Sep 17 00:00:00 2001
From: Rob Kendrick <rjek@netsurf-browser.org>
Date: Tue, 30 Jan 2007 19:51:54 +0000
Subject: [PATCH] Generates and use a User-Agent: string based on new
 netsurf_version_major/minor values, and results of uname().

svn path=/trunk/netsurf/; revision=3158
---
 content/fetch.c   |  6 +++++-
 desktop/netsurf.h |  2 ++
 desktop/version.c |  3 ++-
 utils/utils.c     | 35 +++++++++++++++++++++++++++++++++++
 utils/utils.h     |  1 +
 5 files changed, 45 insertions(+), 2 deletions(-)

diff --git a/content/fetch.c b/content/fetch.c
index 337e4a5ed..cead364a2 100644
--- a/content/fetch.c
+++ b/content/fetch.c
@@ -98,7 +98,7 @@ struct cache_handle {
 	struct cache_handle *r_next; /**< Next cached handle in ring. */
 };
 
-static const char * const user_agent = "NetSurf";
+static char *user_agent = "NetSurf";
 CURLM *fetch_curl_multi;		/**< Global cURL multi handle. */
 /** Curl handle with default options set; not used for transfers. */
 static CURL *fetch_blank_curl;
@@ -212,6 +212,10 @@ static void fetch_dispatch_jobs(void);
 void fetch_init(void)
 {
 	CURLcode code;
+	char *ua = make_useragent();
+	
+	if (ua != NULL)
+		user_agent = ua;
 
 	code = curl_global_init(CURL_GLOBAL_ALL);
 	if (code != CURLE_OK)
diff --git a/desktop/netsurf.h b/desktop/netsurf.h
index 71422d76e..a1865a604 100644
--- a/desktop/netsurf.h
+++ b/desktop/netsurf.h
@@ -12,6 +12,8 @@
 
 extern bool netsurf_quit;
 extern const char * const netsurf_version;
+extern const int netsurf_version_major;
+extern const int netsurf_version_minor;
 
 #endif
 
diff --git a/desktop/version.c b/desktop/version.c
index 0ba2a66e9..5fc254cd0 100644
--- a/desktop/version.c
+++ b/desktop/version.c
@@ -1,2 +1,3 @@
 const char * const netsurf_version = "Development Build";
-
+const int netsurf_version_major = 0;
+const int netsurf_version_minor = 0;
diff --git a/utils/utils.c b/utils/utils.c
index b0707b7f2..54a3020ae 100644
--- a/utils/utils.c
+++ b/utils/utils.c
@@ -2,6 +2,7 @@
  * This file is part of NetSurf, http://netsurf-browser.org/
  * Licensed under the GNU General Public License,
  *                http://www.opensource.org/licenses/gpl-license
+ * Copyright 2007 Rob Kendrick <rjek@netsurf-browser.org>
  * Copyright 2004-2007 James Bursa <bursa@users.sourceforge.net>
  * Copyright 2003 Phil Mellor <monkeyson@users.sourceforge.net>
  * Copyright 2003 John M Bell <jmb202@ecs.soton.ac.uk>
@@ -15,6 +16,8 @@
 #include <string.h>
 #include <sys/stat.h>
 #include <sys/types.h>
+#include <sys/utsname.h>
+#include <sys/time.h>
 #include <regex.h>
 #include <time.h>
 #include "netsurf/utils/config.h"
@@ -23,6 +26,7 @@
 #include "netsurf/utils/messages.h"
 #include "netsurf/utils/utf8.h"
 #include "netsurf/utils/utils.h"
+#include "netsurf/desktop/netsurf.h"
 
 
 char * strip(char * const s)
@@ -254,6 +258,37 @@ unsigned int wallclock(void)
 	return ((tv.tv_sec * 100) + (tv.tv_usec / 10000));
 }
 
+/** Generate a string suitable for use as a user agent in HTTP requests.
+ *
+ * \return heap-allocated result string, or NULL if the allocation failed.
+ */
+#define UA_BUF_SIZE 128
+char *make_useragent(void)
+{
+	struct utsname un;
+	char ua_name[UA_BUF_SIZE];
+	char ua_machine[UA_BUF_SIZE];
+	char *r;
+	
+	snprintf(ua_name, UA_BUF_SIZE, "NetSurf/%d.%d",
+					netsurf_version_major,
+					netsurf_version_minor);
+	
+	if (uname(&un) != 0) {
+		strncpy(ua_machine, "unknown machine", UA_BUF_SIZE);
+	} else {
+		snprintf(ua_machine, UA_BUF_SIZE, "(%s; %s)", un.sysname,
+								un.machine);
+	}
+	
+	if ((r = malloc(strlen(ua_name) + strlen(ua_machine) + 2)) == NULL)
+		return NULL;
+		
+	sprintf(r, "%s %s", ua_name, ua_machine);
+	
+	return r;
+}
+
 #ifdef __FreeBSD__
 
 /**
diff --git a/utils/utils.h b/utils/utils.h
index 67173d242..85e6ebede 100644
--- a/utils/utils.h
+++ b/utils/utils.h
@@ -57,6 +57,7 @@ char *human_friendly_bytesize(unsigned long bytesize);
 const char *rfc1123_date(time_t t);
 char *strcasestr(const char *haystack, const char *needle);
 unsigned int wallclock(void);
+char *make_useragent(void);
 #ifdef __FreeBSD__
 /* FreeBSD lacks strndup */
 char *strndup(const char *s, size_t n);