varnish / libvmod-var Goto Github PK

unset req.http.Cookie;
var.set("name", req.http.Cookie);

sub vcl_backend_response {
  var.set("foo", "bar");
}

kernel: varnishd[31186]: segfault at 18 ip 00007fa2431fc28f sp 00007fa2420ce170 error 4 in libvmod_var.so[7fa2431fb000+3000]
kernel: [81589.491201] varnishd[31186]: segfault at 18 ip 00007fa2431fc28f sp 00007fa2420ce170 error 4 in libvmod_var.so[7fa2431fb000+3000]

vcl 4.0;

import std;
import var;
import digest;
import cookie;

backend default {
    .host = "192.168.56.1";
    .port = "80";
}

sub set_var {
    var.set_duration("cacheError", 2s);
    var.set_int("isDevel", 1);
}

sub vcl_recv {
    call set_var;

    set req.backend_hint = default;

    return(pass);
}

Assert error in vh_get_var(), vmod_var.c line 60:
  Condition((v)->magic == 0x8A21A651) not true.
thread = (cache-worker)
ident = Linux,2.6.32-5-amd64,x86_64,-smalloc,-smalloc,-hcritbit,epoll
Backtrace:
  0x43cf7d: pan_backtrace+0x19
  0x43d28d: pan_ic+0x1e8
  0x7fab258f3082: /usr/local/lib/varnish/vmods/libvmod_var.so(+0x1082) [0x7fab258f3082]
  0x7fab258f3a96: /usr/local/lib/varnish/vmods/libvmod_var.so(+0x1a96) [0x7fab258f3a96]
  0x7fab258f3bd1: /usr/local/lib/varnish/vmods/libvmod_var.so(vmod_set_duration+0x31) [0x7fab258f3bd1]
  0x7fab25cfee06: ./vcl.cmLlBEzo.so(VGC_function_set_var+0x26) [0x7fab25cfee06]
  0x7fab25cff576: ./vcl.cmLlBEzo.so(VGC_function_vcl_recv+0x16) [0x7fab25cff576]
  0x44d2c4: vcl_call_method+0x450
  0x44d456: VCL_recv_method+0x125
  0x443cd0: cnt_recv+0x5c1
req = 0x7fab20af7030 {
  sp = 0x1c051c0, vxid = 1073741828,  step = R_STP_RECV,
  req_body = R_BODY_NONE,
  restarts = 0, esi_level = 0
  sp = 0x1c051c0 {
    fd = 12, vxid = 1,
    client = 192.168.56.1 61069,
    step = S_STP_WORKING,
  },
  worker = 0x7fab21269c50 {
    ws = 0x7fab21269e68 {
      id = "wrk",
      {s,f,r,e} = {0x7fab21269410,0x7fab21269410,(nil),+2048},
    },
  VCL::method = RECV,
  VCL::return = abandon,
  },
  ws = 0x7fab20af71c8 {
    id = "req",
    {s,f,r,e} = {0x7fab20af9020,+576,(nil),+243968},
  },
  http[req] = {
    ws = 0x7fab20af71c8[req]
      "GET",
      "/favicon.ico",
      "HTTP/1.1",
      "Host: *DELETED*",
      "Connection: keep-alive",
      "Pragma: no-cache",
      "Cache-Control: no-cache",
      "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",
      "User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.111 Safari/537.36",
      "Accept-Encoding: gzip,deflate,sdch",
      "Accept-Language: pl-PL,pl;q=0.8,en-US;q=0.6,en;q=0.4",
      "Cookie: *DELETED*",
      "X-Forwarded-For: 192.168.56.1",
  },
  vcl = {
    srcname = {
      "input",
      "Builtin",
    },
  },
},

varnishtest "Test global_get in vcl_init"

server s1 {
       rxreq
       txresp
} -start

varnish v1 -vcl+backend {
        import var from "${vmod_topbuild}/src/.libs/libvmod_var.so";

        sub vcl_init {
                var.global_set("foo", "bar");
                if (var.global_get("foo") == "bar") {
                        var.global_set("foo", "baz");
                }
        }

        sub vcl_deliver {
                set resp.http.x-foo = var.global_get("foo");
        }
} -start

client c1 {
        txreq -url "/"
        rxresp
        expect resp.http.x-foo == "baz"
} -start