TT#91452 pv_headers: fix $x_hdr index

* previously we where not supporting pseudo-variables as index

Change-Id: If7d3dfd190b63f18750ff89fa2fbebc4be173396

debian/patches/sipwise/add_pv_headers_module.patch

@@ -1,13 +1,14 @@
 From: Sipwise Development Team <support@sipwise.com>
 Date: Mon, 18 Nov 2019 10:36:39 +0100
 Subject: add_pv_headers_module
+
 ---
  src/Makefile.groups                 |    2 +-
  src/modules/pv_headers/Makefile     |   12 +
  src/modules/pv_headers/README       |  488 ++++++++
- src/modules/pv_headers/pv_headers.c | 2126 +++++++++++++++++++++++++++++++++++
+ src/modules/pv_headers/pv_headers.c | 2134 +++++++++++++++++++++++++++++++++++
  src/modules/pv_headers/pv_headers.h |   30 +
- 5 files changed, 2657 insertions(+), 1 deletion(-)
+ 5 files changed, 2665 insertions(+), 1 deletion(-)
  create mode 100644 src/modules/pv_headers/Makefile
  create mode 100644 src/modules/pv_headers/README
  create mode 100644 src/modules/pv_headers/pv_headers.c
@@ -540,10 +541,10 @@ index 0000000..30bd1da
 +            $var(test) = $x_rr;
 diff --git a/src/modules/pv_headers/pv_headers.c b/src/modules/pv_headers/pv_headers.c
 new file mode 100644
-index 0000000..f3c8a83
+index 0000000..30a2909
 --- /dev/null
 +++ b/src/modules/pv_headers/pv_headers.c
-@@ -0,0 +1,2126 @@
+@@ -0,0 +1,2134 @@
 +/*
 + * pv_headers
 + *
@@ -1992,10 +1993,14 @@ index 0000000..f3c8a83
 +    sr_xval_t *xval = NULL;
 +    pv_value_t tv;
 +    str hname = STR_NULL;
-+    int idx = 0;
++    int idx, idxf;
 +    int cnt = 0;
 +
-+    idx = param->pvi.u.ival;
++    /* get the index */
++    if(pv_get_spec_index(msg, param, &idx, &idxf) != 0) {
++        LM_ERR("invalid index\n");
++        return -1;
++    }
 +
 +    if (param->pvn.type == PV_NAME_PVAR)
 +    {
@@ -2021,7 +2026,7 @@ index 0000000..f3c8a83
 +            cnt = xavp_count(&hname, &xavp);
 +        idx = idx + cnt;
 +        if (idx < 0)
-+            pv_get_null(msg, param, res);
++            return pv_get_null(msg, param, res);
 +    }
 +
 +    xval = pv_xavp_get_value(msg, &xavp_name, &hname, idx);
@@ -2044,8 +2049,12 @@ index 0000000..f3c8a83
 +    int cnt = 0;
 +    int itype;
 +
-+    idx = param->pvi.u.ival;
-+    itype = param->pvi.type;
++    /* get the index */
++    if(pv_get_spec_index(msg, param, &idx, &itype)!=0)
++    {
++        LM_ERR("invalid index\n");
++        return -1;
++    }
 +
 +    if (param->pvn.type == PV_NAME_PVAR)
 +    {