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use spectrum_markup_linkify to escape href attribute

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This commit is contained in:
Jan Kaluza 2011-09-27 15:44:33 +02:00
parent 6cffbaebf8
commit 7ec599cb50
2 changed files with 249 additions and 2 deletions
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249
backends/libpurple/main.cpp
View file

@ -95,6 +95,253 @@ static GHashTable *spectrum_ui_get_info(void)
return ui_info;
}
static gboolean
badchar(char c)
{
switch (c) {
case ' ':
case ',':
case '\0':
case '\n':
case '\r':
case '<':
case '>':
case '"':
return TRUE;
default:
return FALSE;
}
}
static gboolean
badentity(const char *c)
{
if (!g_ascii_strncasecmp(c, "&lt;", 4) ||
!g_ascii_strncasecmp(c, "&gt;", 4) ||
!g_ascii_strncasecmp(c, "&quot;", 6)) {
return TRUE;
}
return FALSE;
}
static const char *
process_link(GString *ret,
const char *start, const char *c,
int matchlen,
const char *urlprefix,
int inside_paren)
{
char *url_buf;
const char *t;
for (t = c;; t++) {
if (!badchar(*t) && !badentity(t))
continue;
if (t - c == matchlen)
break;
if (*t == ',' && *(t + 1) != ' ') {
continue;
}
if (t > start && *(t - 1) == '.')
t--;
if (t > start && *(t - 1) == ')' && inside_paren > 0)
t--;
url_buf = g_strndup(c, t - c);
// tmpurlbuf = purple_unescape_html(url_buf);
// std::cout << url_buf << "\n";
g_string_append_printf(ret, "<A HREF=\"%s%s\">%s</A>",
urlprefix,
url_buf, url_buf);
// g_free(tmpurlbuf);
g_free(url_buf);
return t;
}
return c;
}
static char *
spectrum_markup_linkify(const char *text)
{
const char *c, *t, *q = NULL;
char *tmpurlbuf, *url_buf;
gunichar g;
gboolean inside_html = FALSE;
int inside_paren = 0;
GString *ret;
if (text == NULL)
return NULL;
ret = g_string_new("");
c = text;
while (*c) {
if(*c == '(' && !inside_html) {
inside_paren++;
ret = g_string_append_c(ret, *c);
c++;
}
if(inside_html) {
if(*c == '>') {
inside_html = FALSE;
} else if(!q && (*c == '\"' || *c == '\'')) {
q = c;
} else if(q) {
if(*c == *q)
q = NULL;
}
} else if(*c == '<') {
inside_html = TRUE;
if (!g_ascii_strncasecmp(c, "<A", 2)) {
while (1) {
if (!g_ascii_strncasecmp(c, "/A>", 3)) {
inside_html = FALSE;
break;
}
ret = g_string_append_c(ret, *c);
c++;
if (!(*c))
break;
}
}
} else if (!g_ascii_strncasecmp(c, "http://", 7)) {
c = process_link(ret, text, c, 7, "", inside_paren);
} else if (!g_ascii_strncasecmp(c, "https://", 8)) {
c = process_link(ret, text, c, 8, "", inside_paren);
} else if (!g_ascii_strncasecmp(c, "ftp://", 6)) {
c = process_link(ret, text, c, 6, "", inside_paren);
} else if (!g_ascii_strncasecmp(c, "sftp://", 7)) {
c = process_link(ret, text, c, 7, "", inside_paren);
} else if (!g_ascii_strncasecmp(c, "file://", 7)) {
c = process_link(ret, text, c, 7, "", inside_paren);
} else if (!g_ascii_strncasecmp(c, "www.", 4) && c[4] != '.' && (c == text || badchar(c[-1]) || badentity(c-1))) {
c = process_link(ret, text, c, 4, "http://", inside_paren);
} else if (!g_ascii_strncasecmp(c, "ftp.", 4) && c[4] != '.' && (c == text || badchar(c[-1]) || badentity(c-1))) {
c = process_link(ret, text, c, 4, "ftp://", inside_paren);
} else if (!g_ascii_strncasecmp(c, "xmpp:", 5) && (c == text || badchar(c[-1]) || badentity(c-1))) {
c = process_link(ret, text, c, 5, "", inside_paren);
} else if (!g_ascii_strncasecmp(c, "mailto:", 7)) {
t = c;
while (1) {
if (badchar(*t) || badentity(t)) {
const char *d;
if (t - c == 7) {
break;
}
if (t > text && *(t - 1) == '.')
t--;
if ((d = strstr(c + 7, "?")) != NULL && d < t)
url_buf = g_strndup(c + 7, d - c - 7);
else
url_buf = g_strndup(c + 7, t - c - 7);
if (!purple_email_is_valid(url_buf)) {
g_free(url_buf);
break;
}
g_free(url_buf);
url_buf = g_strndup(c, t - c);
// tmpurlbuf = purple_unescape_html(url_buf);
g_string_append_printf(ret, "<A HREF=\"%s\">%s</A>",
url_buf, url_buf);
g_free(url_buf);
// g_free(tmpurlbuf);
c = t;
break;
}
t++;
}
} else if (c != text && (*c == '@')) {
int flag;
GString *gurl_buf = NULL;
const char illegal_chars[] = "!@#$%^&*()[]{}/|\\<>\":;\r\n \0";
if (strchr(illegal_chars,*(c - 1)) || strchr(illegal_chars, *(c + 1)))
flag = 0;
else {
flag = 1;
gurl_buf = g_string_new("");
}
t = c;
while (flag) {
/* iterate backwards grabbing the local part of an email address */
g = g_utf8_get_char(t);
if (badchar(*t) || (g >= 127) || (*t == '(') ||
((*t == ';') && ((t > (text+2) && (!g_ascii_strncasecmp(t - 3, "&lt;", 4) ||
!g_ascii_strncasecmp(t - 3, "&gt;", 4))) ||
(t > (text+4) && (!g_ascii_strncasecmp(t - 5, "&quot;", 6)))))) {
/* local part will already be part of ret, strip it out */
ret = g_string_truncate(ret, ret->len - (c - t));
ret = g_string_append_unichar(ret, g);
break;
} else {
g_string_prepend_unichar(gurl_buf, g);
t = g_utf8_find_prev_char(text, t);
if (t < text) {
ret = g_string_assign(ret, "");
break;
}
}
}
t = g_utf8_find_next_char(c, NULL);
while (flag) {
/* iterate forwards grabbing the domain part of an email address */
g = g_utf8_get_char(t);
if (badchar(*t) || (g >= 127) || (*t == ')') || badentity(t)) {
char *d;
url_buf = g_string_free(gurl_buf, FALSE);
/* strip off trailing periods */
if (strlen(url_buf) > 0) {
for (d = url_buf + strlen(url_buf) - 1; *d == '.'; d--, t--)
*d = '\0';
}
tmpurlbuf = purple_unescape_html(url_buf);
if (purple_email_is_valid(tmpurlbuf)) {
g_string_append_printf(ret, "<A HREF=\"mailto:%s\">%s</A>",
url_buf, url_buf);
} else {
g_string_append(ret, url_buf);
}
g_free(url_buf);
g_free(tmpurlbuf);
c = t;
break;
} else {
g_string_append_unichar(gurl_buf, g);
t = g_utf8_find_next_char(t, NULL);
}
}
}
if(*c == ')' && !inside_html) {
inside_paren--;
ret = g_string_append_c(ret, *c);
c++;
}
if (*c == 0)
break;
ret = g_string_append_c(ret, *c);
c++;
}
return g_string_free(ret, FALSE);
}
struct authRequest {
PurpleAccountRequestAuthorizationCb authorize_cb;
PurpleAccountRequestAuthorizationCb deny_cb;
@ -767,7 +1014,7 @@ static void conv_write_im(PurpleConversation *conv, const char *who, const char
char *newline = purple_strdup_withhtml(msg);
char *strip, *xhtml, *xhtml_linkified;
purple_markup_html_to_xhtml(newline, &xhtml, &strip);
xhtml_linkified = purple_markup_linkify(xhtml);
xhtml_linkified = spectrum_markup_linkify(xhtml);
std::string message_(strip);
std::string xhtml_(xhtml_linkified);

2
spectrum/src/sample.cfg
View file

@ -11,7 +11,7 @@ admin_password=test
#cert=server.pfx #patch to PKCS#12 certificate
#cert_password=test #password to that certificate if any
users_per_backend=10
backend=/home/hanzz/code/libtransport/backends/libpurple/spectrum_libpurple_backend
backend=/home/hanzz/code/libtransport/backends/libpurple/spectrum2_libpurple_backend
#backend=/home/hanzz/code/libtransport/backends/frotz/spectrum_frotz_backend
#backend=../../backends/libircclient-qt/spectrum_libircclient-qt_backend
#protocol=prpl-msn