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From 2b8b92486ac28aff4a7d99fc18084db3d6f9617c Mon Sep 17 00:00:00 2001
From: Matej Habrnal <mhabrnal@redhat.com>
Date: Fri, 12 Feb 2016 14:20:19 +0100
Subject: [PATCH] lib: introduce global configuration + option for excluded
 elements

Related to rhbz#1168494

Signed-off-by: Matej Habrnal <mhabrnal@redhat.com>
Signed-off-by: Jakub Filak <jfilak@redhat.com>
---
 src/include/Makefile.am            |   2 +-
 src/include/global_configuration.h |  45 ++++++++++++
 src/include/internal_libreport.h   |   2 +-
 src/include/libreport_types.h      |   2 +
 src/lib/Makefile.am                |   3 +-
 src/lib/global_configuration.c     | 143 +++++++++++++++++++++++++++++++++++++
 src/plugins/reporter-upload.c      |   4 +-
 7 files changed, 196 insertions(+), 5 deletions(-)
 create mode 100644 src/include/global_configuration.h
 create mode 100644 src/lib/global_configuration.c

diff --git a/src/include/Makefile.am b/src/include/Makefile.am
index de44cda..062bffb 100644
--- a/src/include/Makefile.am
+++ b/src/include/Makefile.am
@@ -9,7 +9,7 @@ libreport_include_HEADERS = \
     run_event.h \
     libreport_curl.h \
     workflow.h \
-    \
+    global_configuration.h \
     config_item_info.h \
     file_obj.h \
     internal_libreport.h \
diff --git a/src/include/global_configuration.h b/src/include/global_configuration.h
new file mode 100644
index 0000000..9666796
--- /dev/null
+++ b/src/include/global_configuration.h
@@ -0,0 +1,45 @@
+/*
+    Copyright (C) 2015  ABRT team
+    Copyright (C) 2015  RedHat Inc
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#ifndef LIBREPORT_GLOBAL_CONFIGURATION_H
+#define LIBREPORT_GLOBAL_CONFIGURATION_H
+
+#include "libreport_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define load_global_configuration libreport_load_global_configuration
+bool load_global_configuration(void);
+
+#define load_global_configuration_from_dirs libreport_load_global_configuration_from_dirs
+bool load_global_configuration_from_dirs(const char *dirs[], int dir_flags[]);
+
+#define free_global_configuration libreport_free_global_configuration
+void free_global_configuration(void);
+
+#define get_global_always_excluded_elements libreport_get_global_always_excluded_elements
+string_vector_ptr_t get_global_always_excluded_elements(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LIBREPORT_GLOBAL_CONFIGURATION_H */
diff --git a/src/include/internal_libreport.h b/src/include/internal_libreport.h
index 2046e69..b632803 100644
--- a/src/include/internal_libreport.h
+++ b/src/include/internal_libreport.h
@@ -45,7 +45,6 @@
 #include <termios.h>
 #include <time.h>
 #include <unistd.h>
-#include <stdbool.h>
 /* Try to pull in PATH_MAX */
 #include <limits.h>
 #include <sys/param.h>
@@ -91,6 +90,7 @@ int vdprintf(int d, const char *format, va_list ap);
 
 /* Pull in entire public libreport API */
 #include "dump_dir.h"
+#include "global_configuration.h"
 #include "event_config.h"
 #include "problem_data.h"
 #include "report.h"
diff --git a/src/include/libreport_types.h b/src/include/libreport_types.h
index 2c60972..eb70fca 100644
--- a/src/include/libreport_types.h
+++ b/src/include/libreport_types.h
@@ -19,9 +19,11 @@
 #ifndef LIBREPORT_TYPES_H_
 #define LIBREPORT_TYPES_H_
 
+#include <stdbool.h>
 #include <glib.h>
 
 typedef gchar **string_vector_ptr_t;
+typedef const gchar *const *const_string_vector_const_ptr_t;
 
 #define string_vector_new_from_string libreport_string_vector_new_from_string
 string_vector_ptr_t string_vector_new_from_string(const char *vector);
diff --git a/src/lib/Makefile.am b/src/lib/Makefile.am
index 7d9722a..f9ea602 100644
--- a/src/lib/Makefile.am
+++ b/src/lib/Makefile.am
@@ -55,7 +55,8 @@ libreport_la_SOURCES = \
     workflow_xml_parser.c \
     config_item_info.c \
     xml_parser.c \
-    libreport_init.c
+    libreport_init.c \
+    global_configuration.c
 
 libreport_la_CPPFLAGS = \
     -I$(srcdir)/../include \
diff --git a/src/lib/global_configuration.c b/src/lib/global_configuration.c
new file mode 100644
index 0000000..903a2fb
--- /dev/null
+++ b/src/lib/global_configuration.c
@@ -0,0 +1,143 @@
+/*
+    Copyright (C) 2015  ABRT team
+    Copyright (C) 2015  RedHat Inc
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#include "global_configuration.h"
+#include "internal_libreport.h"
+
+#define OPT_NAME_SCRUBBED_VARIABLES "ScrubbedENVVariables"
+#define OPT_NAME_EXCLUDED_ELEMENTS "AlwaysExcludedElements"
+
+static const char *const s_recognized_options[] = {
+    OPT_NAME_SCRUBBED_VARIABLES,
+    OPT_NAME_EXCLUDED_ELEMENTS,
+    NULL,
+};
+
+static map_string_t *s_global_settings;
+
+bool load_global_configuration(void)
+{
+    static const char *dirs[] = {
+        CONF_DIR,
+        NULL,
+        NULL,
+    };
+
+    static int dir_flags[] = {
+#if 0
+        CONF_DIR_FLAG_NONE,
+#else
+        /* jfilak: RHEL-7 do not use global configuration file */
+        CONF_DIR_FLAG_OPTIONAL,
+#endif
+        CONF_DIR_FLAG_OPTIONAL,
+        -1,
+    };
+
+    if (dirs[1] == NULL)
+        dirs[1] = get_user_conf_base_dir();
+
+    return load_global_configuration_from_dirs(dirs, dir_flags);
+}
+
+bool load_global_configuration_from_dirs(const char *dirs[], int dir_flags[])
+{
+    if (s_global_settings == NULL)
+    {
+        s_global_settings = new_map_string();
+
+        bool ret = load_conf_file_from_dirs_ext("libreport.conf", dirs, dir_flags, s_global_settings,
+                                               /*don't skip without value*/ false);
+        if (!ret)
+        {
+            error_msg("Failed to load libreport global configuration");
+            free_global_configuration();
+            return false;
+        }
+
+        map_string_iter_t iter;
+        init_map_string_iter(&iter, s_global_settings);
+        const char *key, *value;
+        while(next_map_string_iter(&iter, &key, &value))
+        {
+            /* Die to avoid security leaks in case where someone made a typo in a option name */
+            if (!is_in_string_list(key, s_recognized_options))
+            {
+                error_msg("libreport global configuration contains unrecognized option : '%s'", key);
+                free_global_configuration();
+                return false;
+            }
+        }
+    }
+    else
+        log_notice("libreport global configuration already loaded");
+
+    return true;
+}
+
+void free_global_configuration(void)
+{
+    if (s_global_settings != NULL)
+    {
+        free_map_string(s_global_settings);
+        s_global_settings = NULL;
+    }
+}
+
+static void assert_global_configuration_initialized(void)
+{
+    if (NULL == s_global_settings)
+    {
+        error_msg("libreport global configuration is not initialized");
+        abort();
+    }
+}
+
+#define get_helper(type, getter, name) \
+    ({ \
+    assert_global_configuration_initialized(); \
+    type opt; \
+    if (getter(s_global_settings, name, &opt)) \
+        /* Die to avoid security leaks in case where someone made a error */ \
+        error_msg_and_die("libreport global settings contains invalid data: '"name"'"); \
+    opt;\
+    })
+
+string_vector_ptr_t get_global_always_excluded_elements(void)
+{
+    assert_global_configuration_initialized();
+
+    char *env_exclude = getenv("EXCLUDE_FROM_REPORT");
+    const char *gc_exclude = get_map_string_item_or_NULL(s_global_settings, OPT_NAME_EXCLUDED_ELEMENTS);
+
+    if (env_exclude != NULL && gc_exclude == NULL)
+        return string_vector_new_from_string(env_exclude);
+
+    if (env_exclude == NULL && gc_exclude != NULL)
+        return string_vector_new_from_string(gc_exclude);
+
+    if (env_exclude == NULL && gc_exclude == NULL)
+        return string_vector_new_from_string(NULL);
+
+    char *joined_exclude = xasprintf("%s, %s", env_exclude, gc_exclude);
+    string_vector_ptr_t ret = string_vector_new_from_string(joined_exclude);
+    free(joined_exclude);
+
+    return ret;
+}
diff --git a/src/plugins/reporter-upload.c b/src/plugins/reporter-upload.c
index 84c827b..6d83d2f 100644
--- a/src/plugins/reporter-upload.c
+++ b/src/plugins/reporter-upload.c
@@ -96,12 +96,12 @@ static int create_and_upload_archive(
 
     /* Write data to the tarball */
     {
-        char *exclude_from_report = getenv("EXCLUDE_FROM_REPORT");
+        string_vector_ptr_t exclude_from_report = get_global_always_excluded_elements();
         dd_init_next_file(dd);
         char *short_name, *full_name;
         while (dd_get_next_file(dd, &short_name, &full_name))
         {
-            if (exclude_from_report && is_in_comma_separated_list(short_name, exclude_from_report))
+            if (exclude_from_report && is_in_string_list(short_name, (const_string_vector_const_ptr_t)exclude_from_report))
                 goto next;
 
             // dd_get_next_file guarantees that it's a REG:
-- 
1.8.3.1