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Update Adblock filters according to Last modified/ Expires

This commit is contained in:
Paweł Forysiuk 2012-09-01 01:57:17 +02:00 committed by Christian Dywan
parent db0ae6ab60
commit 9b09760839
1 changed files with 84 additions and 1 deletions
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85
extensions/adblock.c
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@ -46,6 +46,9 @@ static GString* blockcss = NULL;
static gboolean
adblock_parse_file (gchar* path);
static gboolean
adblock_file_is_up_to_date (gchar* path);
static void
adblock_reload_rules (MidoriExtension* extension,
gboolean custom_only);
@ -223,7 +226,8 @@ adblock_reload_rules (MidoriExtension* extension,
continue;
}
if (!adblock_parse_file (path))
if (!adblock_parse_file (path)
|| !adblock_file_is_up_to_date (path))
{
WebKitNetworkRequest* request;
WebKitDownload* download;
@ -1513,6 +1517,85 @@ adblock_parse_line (gchar* line)
return adblock_add_url_pattern ("", "uri", line);
}
static GDateMonth
str_month_name_to_gdate (const gchar* month)
{
guint i;
const gchar* months[] = {
"", "January", "February", "March", "April", "May", "June",
"July", "August", "September", "October", "November", "December"
};
for (i = 0; i < G_N_ELEMENTS (months); i++)
{
if (strncmp (month, months[i], 3) == 0)
return i;
}
return 0;
}
static gboolean
adblock_file_is_up_to_date (gchar* path)
{
FILE* file;
guint days_to_expire = 0;
gchar* timestamp = NULL;
gchar line[2000];
/* Check a chunk of header for update info */
if ((file = g_fopen (path, "r")))
{
guint i;
for (i = 0; i <= 10; i++)
{
fgets (line, 2000, file);
if (strncmp ("! Expires", line, 9) == 0)
{
gchar** parts = g_strsplit (line, " ", 4);
days_to_expire = atoi (parts[2]);
g_strfreev (parts);
}
if (strncmp ("! Last modified", line, 15) == 0)
{
gchar** parts = g_strsplit (line, ":", 2);
timestamp = g_strdup (parts[1] + 1);
g_strchomp (timestamp);
g_strfreev (parts);
}
}
if (days_to_expire && timestamp != NULL)
{
guint days_elapsed = 0;
GDate* current = g_date_new ();
GDate* mod_date = g_date_new ();
gchar** parts = g_strsplit (timestamp, " ", 4);
g_date_set_day (mod_date, atoi (parts[0]));
g_date_set_month (mod_date, str_month_name_to_gdate (parts[1]));
g_date_set_year (mod_date, atoi (parts[2]));
g_strfreev (parts);
g_date_set_time_t (current, time (NULL));
days_elapsed = g_date_days_between (mod_date, current);
g_date_free (current);
g_date_free (mod_date);
g_free (timestamp);
if (days_elapsed < days_to_expire)
return TRUE;
else
return FALSE;
}
else
g_free (timestamp);
return TRUE;
}
return FALSE;
}
static gboolean
adblock_parse_file (gchar* path)
{