lighttpd-mod_evasive-status_code.patch

   1 --- lighttpd-1.4.13/src/mod_evasive.c~  2006-10-10 03:02:12.749561697 +0300
   2 +++ lighttpd-1.4.13/src/mod_evasive.c   2006-10-10 03:14:39.056335465 +0300
   3 @@ -27,11 +27,15 @@
   4
   5  typedef struct {
   6         unsigned short max_conns;
   7 +       unsigned short http_status_code;
   8 +       unsigned int retry_after;
   9  } plugin_config;
  10
  11  typedef struct {
  12         PLUGIN_DATA;
  13
  14 +       buffer *evasive_rftmp;
  15 +
  16         plugin_config **config_storage;
  17
  18         plugin_config conf;
  19 @@ -42,6 +46,10 @@
  20
  21         p = calloc(1, sizeof(*p));
  22
  23 +       p->evasive_rftmp = buffer_init();
  24 +
  25 +       buffer_prepare_copy(p->evasive_rftmp, 255);
  26 +
  27         return p;
  28  }
  29
  30 @@ -52,6 +60,8 @@
  31
  32         if (!p) return HANDLER_GO_ON;
  33
  34 +       buffer_free(p->evasive_rftmp);
  35 +
  36         if (p->config_storage) {
  37                 size_t i;
  38                 for (i = 0; i < srv->config_context->used; i++) {
  39 @@ -73,6 +83,8 @@
  40
  41         config_values_t cv[] = {
  42                 { "evasive.max-conns-per-ip",    NULL, T_CONFIG_SHORT, T_CONFIG_SCOPE_CONNECTION },
  43 +               { "evasive.http-status-code",    NULL, T_CONFIG_SHORT, T_CONFIG_SCOPE_CONNECTION },
  44 +               { "evasive.retry-after",         NULL, T_CONFIG_SHORT, T_CONFIG_SCOPE_CONNECTION },
  45                 { NULL,                          NULL, T_CONFIG_UNSET, T_CONFIG_SCOPE_UNSET }
  46         };
  47
  48 @@ -84,9 +94,13 @@
  49                 plugin_config *s;
  50
  51                 s = calloc(1, sizeof(plugin_config));
  52 -               s->max_conns       = 0;
  53 +               s->max_conns        = 0;
  54 +               s->http_status_code = 503;
  55 +               s->retry_after      = 0;
  56
  57                 cv[0].destination = &(s->max_conns);
  58 +               cv[1].destination = &(s->http_status_code);
  59 +               cv[2].destination = &(s->retry_after);
  60
  61                 p->config_storage[i] = s;
  62
  63 @@ -105,6 +119,8 @@
  64         plugin_config *s = p->config_storage[0];
  65
  66         PATCH(max_conns);
  67 +       PATCH(http_status_code);
  68 +       PATCH(retry_after);
  69
  70         /* skip the first, the global context */
  71         for (i = 1; i < srv->config_context->used; i++) {
  72 @@ -118,6 +136,10 @@
  73
  74                         if (buffer_is_equal_string(du->key, CONST_STR_LEN("evasive.max-conns-per-ip"))) {
  75                                 PATCH(max_conns);
  76 +                       } else if (buffer_is_equal_string(du->key, CONST_STR_LEN("evasive.http-status-code"))) {
  77 +                               PATCH(http_status_code);
  78 +                       } else if (buffer_is_equal_string(du->key, CONST_STR_LEN("evasive.retry-after"))) {
  79 +                               PATCH(retry_after);
  80                         }
  81                 }
  82         }
  83 @@ -153,7 +175,10 @@
  84                                         inet_ntop_cache_get_ip(srv, &(con->dst_addr)),
  85                                         "turned away. Too many connections.");
  86
  87 -                               con->http_status = 403;
  88 +                               buffer_copy_long(p->evasive_rftmp, p->conf.retry_after);
  89 +
  90 +                               con->http_status = p->conf.http_status_code;
  91 +                               response_header_overwrite(srv, con, CONST_STR_LEN("Retry-After"), CONST_BUF_LEN(p->evasive_rftmp));
  92                                 return HANDLER_FINISHED;
  93                         }
  94                 }