Function copy_header_value

src/ui/httpd.c:442–455

Copy a trimmed header value into out. Oversize security headers are rejected, * never silently converted into an apparently absent header. */

/* Copy a trimmed header value into out. Oversize security headers are rejected,
 * never silently converted into an apparently absent header. */
static bool copy_header_value(const char *val, const char *val_end, char *out, size_t outsz) {
    while (val < val_end && (*val == ' ' || *val == '\t'))
        val++;
    while (val_end > val && (val_end[-1] == ' ' || val_end[-1] == '\t'))
        val_end--;
    size_t n = (size_t)(val_end - val);
    if (n >= outsz) {
        out[0] = '\0';
        return false;
    }
    memcpy(out, val, n);
    out[n] = '\0';
    return true;
}

int cbm_http_parse_head(const char *data, size_t len, cbm_http_req_t *req, size_t *body_offset,
                        size_t *content_length) {