Introduce Travis Integration

* .travis.yml: Configuration file for Travis-CI
* contrib/travis-ci: Script to run on travis. Similar to check-hard but modified
  for travis.
* tests/valgrind-suppressions{-ssl}: Add extra suppressions to prevent a
Valgrind False Positive errors in an old version

Since Travis currently supports only public repositories on GitHub, the support
for automated testing through Travis will be done using my Clone of Wget on
GitHub at: https://github.com/darnir/wget.git
Any commits pushed to this repository will trigger a build on Travis.

.travis.yml

@@ -0,0 +1,50 @@
+sudo: no
+
+language: c
+
+compiler:
+    - gcc
+
+notifications:
+    email:
+        recipients:
+            - darnir@gmail.com
+            - bug-wget@gnu.org
+        on_success: change
+        on_failure: always
+
+env:
+    global:
+        - PERLLIB=$PERLLIB:../../tests
+        - PERL5LIB=$PERL5LIB:../../tests
+    matrix:
+        - SSL=""
+        - SSL="openssl"
+        - SSL="gnutls"
+
+addons:
+    apt:
+        packages:
+            - automake
+            - autoconf
+            - autopoint
+            - flex
+            - texinfo
+            - pkg-config
+            - libgnutls-dev
+            - libssl-dev
+            - make
+            - libhttp-daemon-perl
+            - libio-socket-ssl-perl
+            - libidn11-dev
+            - gettext
+            - texlive
+            - python3
+            - valgrind
+            - language-pack-tr
+            - language-pack-ja
+
+script:
+    - make distclean || true
+    - ./bootstrap
+    - ./contrib/travis-ci $SSL

contrib/travis-ci

@@ -0,0 +1,50 @@
+#!/bin/bash
+
+# Set a stricter bash mode
+set -e
+set -u
+
+SSL=${1:-""}
+case $SSL in
+    "") SSL_LIB="--without-ssl";;
+    "openssl") SSL_LIB="--with-ssl=openssl";;
+    "gnutls") SSL_LIB="--with-ssl=gnutls";;
+esac
+
+# For some reason. /proc/cpuinfo reports 16 cores on Travis, while the docs
+# claim that each instance has only 2 cores. We believe the docs and force a
+# value of only 2 here.
+CORES=2
+
+# Define a large number of Warning flags for the compiler. Hopefully, someone
+# will sit and analyze the output to clean the warnings from the codebase.
+CFLAGS="-std=c89 -pedantic -O2 -Wall -Wextra -Wstrict-prototypes -Wold-style-definition -Wwrite-strings -Wshadow -Wformat -Wformat-security -Wunreachable-code -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition"
+
+# A cachefile for ./configure. I'm not sure if this is any useful.
+CACHEFILE=$PWD/config_check.cache
+
+# measure time consumed and print it at the end of the script
+START=$(date +%s)
+
+# the compiler changed, so we have to remove the cache file here
+rm -f "$CACHEFILE"
+
+for options in "" "--disable-ipv6"; do
+  export DISTCHECK_CONFIGURE_FLAGS="-C --cache-file=$CACHEFILE --enable-assert --enable-valgrind-tests $SSL_LIB $options"
+  echo "  ./configure $DISTCHECK_CONFIGURE_FLAGS CFLAGS=\"$CFLAGS\""
+  ./configure $DISTCHECK_CONFIGURE_FLAGS CFLAGS="$CFLAGS"
+
+  # We would like to have more languages tested here. Currently, there is a
+  # problem in the translations file for Turkish which causes the progress bar
+  # to assert fail. Apart from that, at least one another language with multi
+  # byte and multi column characters.
+  # TODO: Add Japanese and Turkish LANG for test
+  for xLCALL in C; do
+    export TESTS_ENVIRONMENT="LC_ALL=$xLCALL VALGRIND_TESTS=1"
+    echo "    TESTS_ENVIRONMENT=\"$TESTS_ENVIRONMENT\" make distcheck CFLAGS=$CFLAGS -j$CORES"
+    make distcheck CFLAGS="$CFLAGS" -j$CORES
+  done
+done
+
+END=$(date +%s)
+echo "Duration: $((END-START))"

tests/valgrind-suppressions

@@ -6,3 +6,175 @@
    fun:idn_encode
    fun:url_parse
 }
+
+{
+   Valgrind 3.4 bug suppression
+   Memcheck:Cond
+   fun:memrchr
+   fun:modify_param_name
+   fun:extract_param
+   fun:parse_content_disposition
+   fun:check_file_output
+   fun:gethttp
+   fun:http_loop
+   fun:retrieve_url
+   fun:main
+}
+
+{
+   Valgrind 3.4 bug suppression
+   Memcheck:Cond
+   fun:memrchr
+   fun:parse_content_disposition
+   fun:check_file_output
+   fun:gethttp
+   fun:http_loop
+   fun:retrieve_url
+   fun:main
+}
+
+{
+   Valgrind 3.4 bug suppression
+   Memcheck:Cond
+   fun:memrchr
+   fun:parse_content_disposition
+   fun:check_file_output
+   fun:gethttp
+   fun:http_loop
+   fun:retrieve_url
+   fun:main
+}
+
+{
+   Valgrind 3.4 bug suppression
+   Memcheck:Cond
+   fun:memrchr
+   fun:modify_param_name
+   fun:extract_param
+   fun:parse_set_cookie
+   fun:cookie_handle_set_cookie
+   fun:gethttp
+   fun:http_loop
+   fun:retrieve_url
+   fun:main
+}
+
+{
+   Valgrind 3.4 bug suppression
+   Memcheck:Cond
+   fun:memrchr
+   fun:modify_param_name
+   fun:extract_param
+   fun:parse_set_cookie
+   fun:cookie_handle_set_cookie
+   fun:gethttp
+   fun:http_loop
+   fun:retrieve_url
+   fun:main
+}
+
+{
+   Valgrind 3.4 bug suppression
+   Memcheck:Cond
+   fun:memrchr
+   fun:parse_content_disposition
+   fun:check_file_output
+   fun:gethttp
+   fun:http_loop
+   fun:retrieve_url
+   fun:main
+}
+
+{
+   Valgrind 3.4 bug suppression
+   Memcheck:Cond
+   fun:memrchr
+   fun:parse_content_disposition
+   fun:check_file_output
+   fun:gethttp
+   fun:http_loop
+   fun:retrieve_url
+   fun:main
+}
+
+{
+   Valgrind 3.4 bug suppression
+   Memcheck:Cond
+   fun:memrchr
+   fun:parse_content_disposition
+   fun:check_file_output
+   fun:gethttp
+   fun:http_loop
+   fun:retrieve_url
+   fun:main
+}
+
+{
+   Valgrind 3.4 bug suppression
+   Memcheck:Cond
+   fun:memrchr
+   fun:parse_content_disposition
+   fun:check_file_output
+   fun:gethttp
+   fun:http_loop
+   fun:retrieve_url
+   fun:main
+}
+
+{
+   Valgrind 3.4 bug suppression
+   Memcheck:Cond
+   fun:memrchr
+   fun:parse_content_disposition
+   fun:check_file_output
+   fun:gethttp
+   fun:http_loop
+   fun:retrieve_url
+   fun:main
+}
+
+{
+   Valgrind 3.4 bug suppression
+   Memcheck:Cond
+   fun:memrchr
+   fun:parse_content_disposition
+   fun:check_file_output
+   fun:gethttp
+   fun:http_loop
+   fun:retrieve_url
+   fun:main
+}
+
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Cond
+   fun:memrchr
+   fun:extract_param
+   fun:gethttp
+   fun:http_loop
+   fun:retrieve_url
+   fun:main
+}
+
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Cond
+   fun:memrchr
+   fun:gethttp
+   fun:http_loop
+   fun:retrieve_url
+   fun:main
+}
+
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Cond
+   fun:memrchr
+   fun:extract_param
+   fun:parse_set_cookie.constprop.4
+   fun:cookie_handle_set_cookie
+   fun:gethttp
+   fun:http_loop
+   fun:retrieve_url
+   fun:main
+}

tests/valgrind-suppressions-ssl

@@ -26,3 +26,141 @@
    ...
    obj:*/libcrypto.so.*
 }
+
+{
+   Valgrind 3.4 bug suppression
+   Memcheck:Cond
+   fun:memrchr
+   fun:modify_param_name
+   fun:extract_param
+   fun:parse_content_disposition
+   fun:check_file_output
+   fun:gethttp
+   fun:http_loop
+   fun:retrieve_url
+   ...
+}
+
+{
+   Valgrind 3.4 bug suppression
+   Memcheck:Cond
+   fun:memrchr
+   fun:parse_content_disposition
+   fun:check_file_output
+   fun:gethttp
+   fun:http_loop
+   fun:retrieve_url
+   fun:main
+}
+
+{
+   Valgrind 3.4 bug suppression
+   Memcheck:Cond
+   fun:memrchr
+   fun:parse_content_disposition
+   fun:check_file_output
+   fun:gethttp
+   fun:http_loop
+   fun:retrieve_url
+   fun:main
+}
+
+{
+   Valgrind 3.4 bug suppression
+   Memcheck:Cond
+   fun:memrchr
+   fun:modify_param_name
+   fun:extract_param
+   fun:parse_set_cookie
+   fun:cookie_handle_set_cookie
+   fun:gethttp
+   fun:http_loop
+   fun:retrieve_url
+   ...
+}
+
+{
+   Valgrind 3.4 bug suppression
+   Memcheck:Cond
+   fun:memrchr
+   fun:modify_param_name
+   fun:extract_param
+   fun:parse_set_cookie
+   fun:cookie_handle_set_cookie
+   fun:gethttp
+   fun:http_loop
+   fun:retrieve_url
+   ...
+}
+
+{
+   Valgrind 3.4 bug suppression
+   Memcheck:Cond
+   fun:memrchr
+   fun:parse_content_disposition
+   fun:check_file_output
+   fun:gethttp
+   fun:http_loop
+   fun:retrieve_url
+   fun:main
+}
+
+{
+   Valgrind 3.4 bug suppression
+   Memcheck:Cond
+   fun:memrchr
+   fun:parse_content_disposition
+   fun:check_file_output
+   fun:gethttp
+   fun:http_loop
+   fun:retrieve_url
+   fun:main
+}
+
+{
+   Valgrind 3.4 bug suppression
+   Memcheck:Cond
+   fun:memrchr
+   fun:parse_content_disposition
+   fun:check_file_output
+   fun:gethttp
+   fun:http_loop
+   fun:retrieve_url
+   fun:main
+}
+
+{
+   Valgrind 3.4 bug suppression
+   Memcheck:Cond
+   fun:memrchr
+   fun:parse_content_disposition
+   fun:check_file_output
+   fun:gethttp
+   fun:http_loop
+   fun:retrieve_url
+   fun:main
+}
+
+{
+   Valgrind 3.4 bug suppression
+   Memcheck:Cond
+   fun:memrchr
+   fun:parse_content_disposition
+   fun:check_file_output
+   fun:gethttp
+   fun:http_loop
+   fun:retrieve_url
+   fun:main
+}
+
+{
+   Valgrind 3.4 bug suppression
+   Memcheck:Cond
+   fun:memrchr
+   fun:parse_content_disposition
+   fun:check_file_output
+   fun:gethttp
+   fun:http_loop
+   fun:retrieve_url
+   fun:main
+}