deepend/zoitechat
1
0
Fork 0
mirror of https://github.com/ZoiteChat/zoitechat.git synced 2026-03-15 02:00:20 +00:00
Code Issues Packages Projects Releases Wiki Activity

initial patch for filtering malicious characters on win32 (Khisanth)

Browse Source
This commit is contained in:
Berke Viktor
2012-01-20 00:38:57 +01:00
parent beac798c6e
commit a9fb6a18ec
3 changed files with 70 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

51
src/common/text.c
View File

@@ -275,7 +275,10 @@ scrollback_load (session *sess)
time_t stamp;
int lines;
#ifndef WIN32
#ifdef WIN32
char *cleaned_text;
int cleaned_len;
#else
char *map, *end_map;
struct stat statbuf;
const char *begin, *eol;
@@ -371,6 +374,12 @@ scrollback_load (session *sess)
if (text)
{
text = strip_color (text + 1, -1, STRIP_COLOR);
cleaned_text = text_replace_non_bmp (text, -1, &cleaned_len);
if (cleaned_text != NULL)
{
g_free (text);
text = cleaned_text;
}
fe_print_text (sess, text, stamp);
g_free (text);
}
@@ -852,6 +861,46 @@ iso_8859_1_to_utf8 (unsigned char *text, int len, gsize *bytes_written)
return res;
}
#ifdef WIN32
/* replace characters outside of the Basic Multilingual Plane with
* replacement characters (0xFFFD) */
char *
text_replace_non_bmp (char *utf8_input, int input_length, glong *output_length)
{
gunichar *ucs4_text;
gunichar suspect;
gchar *utf8_text;
glong ucs4_length;
glong index;
ucs4_text = g_utf8_to_ucs4_fast (utf8_input, input_length, &ucs4_length);
/* replace anything not in the Basic Multilingual Plane
* (code points above 0xFFFF) with the replacement
* character */
for (index = 0; index < ucs4_length; index++)
{
suspect = ucs4_text[index];
if ((suspect >= 0x1D173 && suspect <= 0x1D17A)
|| (suspect >= 0xE0001 && suspect <= 0xE007F))
{
ucs4_text[index] = 0xFFFD; /* replacement character */
}
}
utf8_text = g_ucs4_to_utf8 (
ucs4_text,
ucs4_length,
NULL,
output_length,
NULL
);
g_free (ucs4_text);
return utf8_text;
}
#endif
char *
text_validate (char **text, int *len)
{