cgit.c: do not segfault on unexpected query-string format

The querystring_cb() function will be invoked with a NULL value when
the querystring contains a name not followed by a '='. Such a value
used to cause a segfault, which this patch fixes.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>

diff --git a/cgit.c b/cgit.c
index 64d95f9a3a7bb56197988e6730c4576173811db0..530184010844a42f1275864bf9b12168ca111288 100644 (file)
--- a/cgit.c
+++ b/cgit.c
@@ -132,6 +132,9 @@ void config_cb(const char *name, const char *value)
 
 static void querystring_cb(const char *name, const char *value)
 {
 
 static void querystring_cb(const char *name, const char *value)
 {

+       if (!value)
+               value = "";
+

        if (!strcmp(name,"r")) {
                ctx.qry.repo = xstrdup(value);
                ctx.repo = cgit_get_repoinfo(value);
        if (!strcmp(name,"r")) {
                ctx.qry.repo = xstrdup(value);
                ctx.repo = cgit_get_repoinfo(value);