TT#53685 add header filter wildcard match support

'*' - matches 0 or more characters
    '?' - matches any one character
    for more info, refer to <fnmatch.h>

Change-Id: Icbe450b7921d541fed089a1bb00c180e416c34ae
(cherry picked from commit e3f342754a)

debian/patches/series

@@ -32,3 +32,4 @@ sipwise/usage-reporting.patch
 sipwise/session_timers
 sipwise/introduce_forcesdp_from_pbx.patch
 sipwise/0001-TT-34704-Fix-sems-and-sems-pbx-to-write-pid-file-whe.patch
+sipwise/0001-TT-53685-add_header_pattern_match_support.patch

debian/patches/sipwise/0001-TT-53685-add_header_pattern_match_support.patch

@@ -0,0 +1,29 @@
+--- a/apps/sbc/HeaderFilter.cpp
++++ b/apps/sbc/HeaderFilter.cpp
+@@ -28,6 +28,7 @@
+ #include "log.h"
+ #include "AmUtils.h"
+ #include <algorithm>
++#include <fnmatch.h>
+ 
+ const char* FilterType2String(FilterType ft) {
+     switch(ft) {
+@@ -216,11 +217,13 @@
+ 	    }
+ 	    string hdr_name = hdrs.substr(start_pos, name_end-start_pos);
+ 	    std::transform(hdr_name.begin(), hdr_name.end(), hdr_name.begin(), ::tolower);
+-	    bool erase = false;
+-	    if (f_type == Whitelist) {
+-		erase = headerfilter_list.find(hdr_name)==headerfilter_list.end();
+-	    } else if (f_type == Blacklist) {
+-		erase = headerfilter_list.find(hdr_name)!=headerfilter_list.end();
++	    bool erase = (f_type == Whitelist);
++	    for (set<string>::iterator it = headerfilter_list.begin();
++			it != headerfilter_list.end(); ++it) {
++		if (fnmatch(it->c_str(), hdr_name.c_str(), 0) == 0) {
++		    erase = (f_type != Whitelist);
++		    break;
++		}
+ 	    }
+ 	    if (erase) {
+ 		DBG("erasing header '%s' by %s\n", hdr_name.c_str(), FilterType2String(f_type));