post processing: fix problem where hex cant straddle block correctly

diff --git a/lib/server.c b/lib/server.c
index ee5a255..4d44540 100644 (file)
--- a/lib/server.c
+++ b/lib/server.c
@@ -2413,6 +2413,7 @@ struct lws_urldecode_stateful {
        int pos;
        int hdr_idx;
        int mp;
+       int sum;
 
        unsigned int multipart_form_data:1;
        unsigned int inside_quote:1;
@@ -2439,6 +2440,7 @@ lws_urldecode_s_create(struct lws *wsi, char *out, int out_len, void *data,
        s->out_len  = out_len;
        s->output = output;
        s->pos = 0;
+       s->sum = 0;
        s->mp = 0;
        s->state = US_NAME;
        s->name[0] = '\0';
@@ -2476,7 +2478,7 @@ static int
 lws_urldecode_s_process(struct lws_urldecode_stateful *s, const char *in, int len)
 {
        int n, m, hit = 0;
-       char sum = 0, c, was_end = 0;
+       char c, was_end = 0;
 
        while (len--) {
                if (s->pos == s->out_len - s->mp - 1) {
@@ -2542,7 +2544,7 @@ lws_urldecode_s_process(struct lws_urldecode_stateful *s, const char *in, int le
                                return -1;
 
                        in++;
-                       sum = n << 4;
+                       s->sum = n << 4;
                        s->state++;
                        break;
 
@@ -2552,7 +2554,7 @@ lws_urldecode_s_process(struct lws_urldecode_stateful *s, const char *in, int le
                                return -1;
 
                        in++;
-                       s->out[s->pos++] = sum | n;
+                       s->out[s->pos++] = s->sum | n;
                        s->state = US_IDLE;
                        break;