wording: avoid blacklist/whitelist stereotypes

Instead of discussing if there's value or meaning (implied or not) in
the colors, let's use words without the same possibly negative
associations.

Closes #5546

17 files changed, 67 insertions, 70 deletions

diff --git a/.travis.yml b/.travis.yml
index 4b4eb60ff..c2b6810ae 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -346,7 +346,7 @@ before_script:
 script:
 - ./scripts/travis/script.sh || travis_terminate 1
 
-# whitelist branches to avoid testing feature branches twice (as branch and as pull request)
+# select branches to avoid testing feature branches twice (as branch and as pull request)
 branches:
   only:
   - master
diff --git a/appveyor.yml b/appveyor.yml
index 3d7fa7971..c810e456a 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -285,7 +285,7 @@ test_script:
         echo APPVEYOR_API_URL=%APPVEYOR_API_URL% &&
         bash.exe -e -l -c "cd /c/projects/curl/tests && ./runtests.pl -a -b$(($(echo '%APPVEYOR_API_URL%' | cut -d'/' -f3 | cut -d':' -f2)+1)) -p !flaky %DISABLED_TESTS%" )
 
-# whitelist branches to avoid testing feature branches twice (as branch and as pull request)
+# select branches to avoid testing feature branches twice (as branch and as pull request)
 branches:
     only:
         - master
diff --git a/docs/CHECKSRC.md b/docs/CHECKSRC.md
index 10e2f4d73..96150922b 100644
--- a/docs/CHECKSRC.md
+++ b/docs/CHECKSRC.md
@@ -9,7 +9,7 @@ check that it adheres to our [Source Code Style guide](CODE_STYLE.md).
 
 ## Command line options
 
-`-W[file]` whitelists that file and excludes it from being checked. Helpful
+`-W[file]` skip that file and excludes it from being checked. Helpful
 when, for example, one of the files is generated.
 
 `-D[dir]` directory name to prepend to file names when accessing them.
@@ -158,5 +158,5 @@ instances are ignored and nothing extra.
 This is a method we've transitioned away from. Use inline ignores as far as
 possible.
 
-Make a `checksrc.whitelist` file in the directory of the source code with the
+Make a `checksrc.skip` file in the directory of the source code with the
 false positive, and include the full offending line into this file.
diff --git a/docs/SSL-PROBLEMS.md b/docs/SSL-PROBLEMS.md
index aaf7bdb59..35000cf76 100644
--- a/docs/SSL-PROBLEMS.md
+++ b/docs/SSL-PROBLEMS.md
@@ -78,7 +78,7 @@
   depending on the OS or build configuration. The --ssl-no-revoke option was
   introduced in 7.44.0 to disable revocation checking but currently is only
   supported for Schannel (the native Windows SSL library), with an exception
-  in the case of Windows' Untrusted Publishers blacklist which it seems can't
+  in the case of Windows' Untrusted Publishers block list which it seems can't
   be bypassed. This option may have broader support to accommodate other SSL
   backends in the future.
 
diff --git a/docs/libcurl/opts/CURLMOPT_PIPELINING_SERVER_BL.3 b/docs/libcurl/opts/CURLMOPT_PIPELINING_SERVER_BL.3
index 405645080..da3251b62 100644
--- a/docs/libcurl/opts/CURLMOPT_PIPELINING_SERVER_BL.3
+++ b/docs/libcurl/opts/CURLMOPT_PIPELINING_SERVER_BL.3
@@ -5,7 +5,7 @@
 .\" *                            | (__| |_| |  _ <| |___
 .\" *                             \___|\___/|_| \_\_____|
 .\" *
-.\" * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" * Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
 .\" *
 .\" * This software is licensed as described in the file COPYING, which
 .\" * you should have received as part of this distribution. The terms
@@ -22,7 +22,7 @@
 .\"
 .TH CURLMOPT_PIPELINING_SERVER_BL 3 "4 Nov 2014" "libcurl 7.39.0" "curl_multi_setopt options"
 .SH NAME
-CURLMOPT_PIPELINING_SERVER_BL \- pipelining server blacklist
+CURLMOPT_PIPELINING_SERVER_BL \- pipelining server block list
 .SH SYNOPSIS
 #include <curl/curl.h>
 
@@ -31,28 +31,28 @@ CURLMcode curl_multi_setopt(CURLM *handle, CURLMOPT_PIPELINING_SERVER_BL, char *
 No function since pipelining was removed in 7.62.0.
 
 Pass a \fBservers\fP array of char *, ending with a NULL entry. This is a list
-of server types prefixes (in the Server: HTTP header) that are blacklisted
-from pipelining, i.e server types that are known to not support HTTP
+of server types prefixes (in the Server: HTTP header) that are blocked from
+pipelining, i.e server types that are known to not support HTTP
 pipelining. The array is copied by libcurl.
 
 Note that the comparison matches if the Server: header begins with the string
-in the blacklist, i.e "Server: Ninja 1.2.3" and "Server: Ninja 1.4.0" can
-both be blacklisted by having "Ninja" in the backlist.
+in the block list, i.e "Server: Ninja 1.2.3" and "Server: Ninja 1.4.0" can
+both be blocked by having "Ninja" in the list.
 
-Pass a NULL pointer to clear the blacklist.
+Pass a NULL pointer to clear the block list.
 .SH DEFAULT
-The default value is NULL, which means that there is no blacklist.
+The default value is NULL, which means that there is no block list.
 .SH PROTOCOLS
 .SH EXAMPLE
 .nf
-  server_blacklist[] =
+  char *server_block_list[] =
   {
     "Microsoft-IIS/6.0",
     "nginx/0.8.54",
     NULL
   };
 
-  curl_multi_setopt(m, CURLMOPT_PIPELINING_SERVER_BL, server_blacklist);
+  curl_multi_setopt(m, CURLMOPT_PIPELINING_SERVER_BL, server_block_list);
 .fi
 .SH AVAILABILITY
 Added in 7.30.0
diff --git a/docs/libcurl/opts/CURLMOPT_PIPELINING_SITE_BL.3 b/docs/libcurl/opts/CURLMOPT_PIPELINING_SITE_BL.3
index 279d9ea57..5bb8a958e 100644
--- a/docs/libcurl/opts/CURLMOPT_PIPELINING_SITE_BL.3
+++ b/docs/libcurl/opts/CURLMOPT_PIPELINING_SITE_BL.3
@@ -5,7 +5,7 @@
 .\" *                            | (__| |_| |  _ <| |___
 .\" *                             \___|\___/|_| \_\_____|
 .\" *
-.\" * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" * Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
 .\" *
 .\" * This software is licensed as described in the file COPYING, which
 .\" * you should have received as part of this distribution. The terms
@@ -22,7 +22,7 @@
 .\"
 .TH CURLMOPT_PIPELINING_SITE_BL 3 "4 Nov 2014" "libcurl 7.39.0" "curl_multi_setopt options"
 .SH NAME
-CURLMOPT_PIPELINING_SITE_BL \- pipelining host blacklist
+CURLMOPT_PIPELINING_SITE_BL \- pipelining host block list
 .SH SYNOPSIS
 #include <curl/curl.h>
 
@@ -31,24 +31,24 @@ CURLMcode curl_multi_setopt(CURLM *handle, CURLMOPT_PIPELINING_SITE_BL, char **h
 No function since pipelining was removed in 7.62.0.
 
 Pass a \fBhosts\fP array of char *, ending with a NULL entry. This is a list
-of sites that are blacklisted from pipelining, i.e sites that are known to not
+of sites that are blocked from pipelining, i.e sites that are known to not
 support HTTP pipelining. The array is copied by libcurl.
 
-Pass a NULL pointer to clear the blacklist.
+Pass a NULL pointer to clear the block list.
 .SH DEFAULT
-The default value is NULL, which means that there is no blacklist.
+The default value is NULL, which means that there is no block list.
 .SH PROTOCOLS
 HTTP(S)
 .SH EXAMPLE
 .nf
-  site_blacklist[] =
+  char *site_block_list[] =
   {
     "www.haxx.se",
     "www.example.com:1234",
     NULL
   };
 
-  curl_multi_setopt(m, CURLMOPT_PIPELINING_SITE_BL, site_blacklist);
+  curl_multi_setopt(m, CURLMOPT_PIPELINING_SITE_BL, site_block_list);
 .fi
 .SH AVAILABILITY
 Added in 7.30.0
diff --git a/docs/libcurl/opts/CURLOPT_OPENSOCKETFUNCTION.3 b/docs/libcurl/opts/CURLOPT_OPENSOCKETFUNCTION.3
index 84e1e8359..31677a128 100644
--- a/docs/libcurl/opts/CURLOPT_OPENSOCKETFUNCTION.3
+++ b/docs/libcurl/opts/CURLOPT_OPENSOCKETFUNCTION.3
@@ -5,7 +5,7 @@
 .\" *                            | (__| |_| |  _ <| |___
 .\" *                             \___|\___/|_| \_\_____|
 .\" *
-.\" * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" * Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
 .\" *
 .\" * This software is licensed as described in the file COPYING, which
 .\" * you should have received as part of this distribution. The terms
@@ -65,7 +65,7 @@ additional \fIsetsockopt(2)\fP calls can of course be done on the socket at
 the user's discretion.  A \fICURL_SOCKET_BAD\fP return value from the callback
 function will signal an unrecoverable error to libcurl and it will return
 \fICURLE_COULDNT_CONNECT\fP from the function that triggered this callback.
-This return code can be used for IP address blacklisting.
+This return code can be used for IP address block listing.
 
 If you want to pass in a socket with an already established connection, pass
 the socket back with this callback and then use
diff --git a/docs/libcurl/opts/CURLOPT_PROXY_SSL_OPTIONS.3 b/docs/libcurl/opts/CURLOPT_PROXY_SSL_OPTIONS.3
index fda45eddb..1812ea4f8 100644
--- a/docs/libcurl/opts/CURLOPT_PROXY_SSL_OPTIONS.3
+++ b/docs/libcurl/opts/CURLOPT_PROXY_SSL_OPTIONS.3
@@ -42,7 +42,7 @@ supported for DarwinSSL, NSS and OpenSSL.
 Tells libcurl to disable certificate revocation checks for those SSL backends
 where such behavior is present. This option is only supported for Schannel
 (the native Windows SSL library), with an exception in the case of Windows'
-Untrusted Publishers blacklist which it seems can't be bypassed. (Added in
+Untrusted Publishers block list which it seems can't be bypassed. (Added in
 7.44.0)
 .IP CURLSSLOPT_NO_PARTIALCHAIN
 Tells libcurl to not accept "partial" certificate chains, which it otherwise
diff --git a/docs/libcurl/opts/CURLOPT_SSL_OPTIONS.3 b/docs/libcurl/opts/CURLOPT_SSL_OPTIONS.3
index 3a2b88cc2..52b2817e9 100644
--- a/docs/libcurl/opts/CURLOPT_SSL_OPTIONS.3
+++ b/docs/libcurl/opts/CURLOPT_SSL_OPTIONS.3
@@ -42,7 +42,7 @@ supported for DarwinSSL, NSS and OpenSSL.
 Tells libcurl to disable certificate revocation checks for those SSL backends
 where such behavior is present. This option is only supported for Schannel
 (the native Windows SSL library), with an exception in the case of Windows'
-Untrusted Publishers blacklist which it seems can't be bypassed. (Added in
+Untrusted Publishers block list which it seems can't be bypassed. (Added in
 7.44.0)
 .IP CURLSSLOPT_NO_PARTIALCHAIN
 Tells libcurl to not accept "partial" certificate chains, which it otherwise
diff --git a/include/curl/multi.h b/include/curl/multi.h
index bda9bb7b8..3039e787e 100644
--- a/include/curl/multi.h
+++ b/include/curl/multi.h
@@ -377,12 +377,10 @@ typedef enum {
      will not be considered for pipelining */
   CURLOPT(CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE, CURLOPTTYPE_OFF_T, 10),
 
-  /* a list of site names(+port) that are blacklisted from
-     pipelining */
+  /* a list of site names(+port) that are blocked from pipelining */
   CURLOPT(CURLMOPT_PIPELINING_SITE_BL, CURLOPTTYPE_OBJECTPOINT, 11),
 
-  /* a list of server types that are blacklisted from
-     pipelining */
+  /* a list of server types that are blocked from pipelining */
   CURLOPT(CURLMOPT_PIPELINING_SERVER_BL, CURLOPTTYPE_OBJECTPOINT, 12),
 
   /* maximum number of open connections in total */
diff --git a/lib/checksrc.pl b/lib/checksrc.pl
index 311b819d5..97b8f9e1d 100755
--- a/lib/checksrc.pl
+++ b/lib/checksrc.pl
@@ -31,14 +31,14 @@ my $warnings = 0;
 my $swarnings = 0;
 my $errors = 0;
 my $serrors = 0;
-my $suppressed; # whitelisted problems
+my $suppressed; # skipped problems
 my $file;
 my $dir=".";
 my $wlist="";
 my @alist;
 my $windows_os = $^O eq 'MSWin32' || $^O eq 'cygwin' || $^O eq 'msys';
 my $verbose;
-my %whitelist;
+my %skiplist;
 
 my %ignore;
 my %ignore_set;
@@ -84,12 +84,12 @@ my %warnings = (
     'TYPEDEFSTRUCT'    => 'typedefed struct',
     );
 
-sub readwhitelist {
-    open(W, "<$dir/checksrc.whitelist") or return;
+sub readskiplist {
+    open(W, "<$dir/checksrc.skip") or return;
     my @all=<W>;
     for(@all) {
         $windows_os ? $_ =~ s/\r?\n$// : chomp;
-        $whitelist{$_}=1;
+        $skiplist{$_}=1;
     }
     close(W);
 }
@@ -142,8 +142,8 @@ sub checkwarn {
     #    print STDERR "Dev! there's no description for $name!\n";
     #}
 
-    # checksrc.whitelist
-    if($whitelist{$line}) {
+    # checksrc.skip
+    if($skiplist{$line}) {
         $nowarn = 1;
     }
     # !checksrc! controlled
@@ -228,7 +228,7 @@ if(!$file) {
     print "  -A[rule]  Accept this violation, can be used multiple times\n";
     print "  -D[DIR]   Directory to prepend file names\n";
     print "  -h        Show help output\n";
-    print "  -W[file]  Whitelist the given file - ignore all its flaws\n";
+    print "  -W[file]  Skip the given file - ignore all its flaws\n";
     print "  -i<n>     Indent spaces. Default: 2\n";
     print "  -m<n>     Maximum line length. Default: 79\n";
     print "\nDetects and warns for these problems:\n";
@@ -238,7 +238,7 @@ if(!$file) {
     exit;
 }
 
-readwhitelist();
+readskiplist();
 readlocalfile();
 
 do {
diff --git a/lib/http.c b/lib/http.c
index a0d3eca24..9f9a1baa9 100644
--- a/lib/http.c
+++ b/lib/http.c
@@ -3698,9 +3698,8 @@ CURLcode Curl_http_readwrite_headers(struct Curl_easy *data,
         else if(conn->httpversion == 20 ||
                 (k->upgr101 == UPGR101_REQUESTED && k->httpcode == 101)) {
           DEBUGF(infof(data, "HTTP/2 found, allow multiplexing\n"));
-
-          /* HTTP/2 cannot blacklist multiplexing since it is a core
-             functionality of the protocol */
+          /* HTTP/2 cannot avoid multiplexing since it is a core functionality
+             of the protocol */
           conn->bundle->multiuse = BUNDLE_MULTIPLEX;
         }
         else if(conn->httpversion >= 11 &&
diff --git a/scripts/copyright.pl b/scripts/copyright.pl
index 8bb4bc9f1..ff2f250b7 100755
--- a/scripts/copyright.pl
+++ b/scripts/copyright.pl
@@ -28,7 +28,7 @@
 #
 
 # regexes of files to not scan
-my @whitelist=(
+my @skiplist=(
     '^tests\/data\/test(\d+)$', # test case data
     '^docs\/cmdline-opts\/[a-z]+(.*)\.d$', # curl.1 pieces
     '(\/|^)[A-Z0-9_.-]+$', # all uppercase file name, possibly with dot and dash
@@ -168,10 +168,10 @@ else {
 for my $f (@all) {
     chomp $f;
     my $skipped = 0;
-    for my $skip (@whitelist) {
+    for my $skip (@skiplist) {
         #print "$f matches $skip ?\n";
         if($f =~ /$skip/) {
-            $whitelisted++;
+            $skiplisted++;
             $skipped = 1;
             #print "$f: SKIPPED ($skip)\n";
             last;
@@ -186,6 +186,6 @@ for my $f (@all) {
 
 print STDERR "$missing files have no copyright\n" if($missing);
 print STDERR "$wrong files have wrong copyright year\n" if ($wrong);
-print STDERR "$whitelisted files are whitelisted\n" if ($whitelisted);
+print STDERR "$skiplisted files are skipped\n" if ($skiplisted);
 
 exit 1 if($missing || $wrong);
diff --git a/tests/data/test1550 b/tests/data/test1550
index bbf60f98a..c305dd6f2 100644
--- a/tests/data/test1550
+++ b/tests/data/test1550
@@ -20,7 +20,7 @@ lib1550
 </tool>
 
  <name>
-verify setting pipeling blacklisting options
+verify setting pipeling blocklisting options
  </name>
  <command>
 http://%HOSTIP:%NOLISTENPORT/1550
diff --git a/tests/data/test1901 b/tests/data/test1901
index 83cdf7290..793bd667a 100644
--- a/tests/data/test1901
+++ b/tests/data/test1901
@@ -40,13 +40,13 @@ http
 lib1900
 </tool>
  <name>
-HTTP GET using pipelining, blacklisted site
+HTTP GET using pipelining, blocklisted site
  </name>
  <command>
 http://%HOSTIP:%HTTPPIPEPORT/ log/urls1901.txt
 </command>
 <file name="log/urls1901.txt">
-blacklist_site 127.0.0.1:%HTTPPIPEPORT
+blocklist_site 127.0.0.1:%HTTPPIPEPORT
 0 1k.txt
 1000 100k.txt
 0 1k.txt
diff --git a/tests/libtest/lib1900.c b/tests/libtest/lib1900.c
index 2a70f8eba..fd7e5bc62 100644
--- a/tests/libtest/lib1900.c
+++ b/tests/libtest/lib1900.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 2013 - 2019, Linus Nielsen Feltzing, <linus@haxx.se>
+ * Copyright (C) 2013 - 2020, Linus Nielsen Feltzing, <linus@haxx.se>
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -27,16 +27,16 @@
 
 #define TEST_HANG_TIMEOUT 60 * 1000
 #define MAX_URLS 200
-#define MAX_BLACKLIST 20
+#define MAX_BLOCKLIST 20
 
 static int urltime[MAX_URLS];
 static char *urlstring[MAX_URLS];
 static CURL *handles[MAX_URLS];
-static char *site_blacklist[MAX_BLACKLIST];
-static char *server_blacklist[MAX_BLACKLIST];
+static char *site_blocklist[MAX_BLOCKLIST];
+static char *server_blocklist[MAX_BLOCKLIST];
 static int num_handles;
-static int blacklist_num_servers;
-static int blacklist_num_sites;
+static int blocklist_num_servers;
+static int blocklist_num_sites;
 
 static size_t
 write_callback(void *contents, size_t size, size_t nmemb, void *userp)
@@ -55,8 +55,8 @@ static int parse_url_file(const char *filename)
   char buf[200];
 
   num_handles = 0;
-  blacklist_num_sites = 0;
-  blacklist_num_servers = 0;
+  blocklist_num_sites = 0;
+  blocklist_num_servers = 0;
 
   f = fopen(filename, "rb");
   if(!f)
@@ -70,9 +70,9 @@ static int parse_url_file(const char *filename)
       continue;
     }
 
-    if(fscanf(f, "blacklist_site %199s\n", buf)) {
-      site_blacklist[blacklist_num_sites] = strdup(buf);
-      blacklist_num_sites++;
+    if(fscanf(f, "blocklist_site %199s\n", buf)) {
+      site_blocklist[blocklist_num_sites] = strdup(buf);
+      blocklist_num_sites++;
       continue;
     }
 
@@ -80,8 +80,8 @@ static int parse_url_file(const char *filename)
   }
   fclose(f);
 
-  site_blacklist[blacklist_num_sites] = NULL;
-  server_blacklist[blacklist_num_servers] = NULL;
+  site_blocklist[blocklist_num_sites] = NULL;
+  server_blocklist[blocklist_num_servers] = NULL;
   return num_handles;
 }
 
@@ -91,11 +91,11 @@ static void free_urls(void)
   for(i = 0; i < num_handles; i++) {
     Curl_safefree(urlstring[i]);
   }
-  for(i = 0; i < blacklist_num_servers; i++) {
-    Curl_safefree(server_blacklist[i]);
+  for(i = 0; i < blocklist_num_servers; i++) {
+    Curl_safefree(server_blocklist[i]);
   }
-  for(i = 0; i < blacklist_num_sites; i++) {
-    Curl_safefree(site_blacklist[i]);
+  for(i = 0; i < blocklist_num_sites; i++) {
+    Curl_safefree(site_blocklist[i]);
   }
 }
 
@@ -159,8 +159,8 @@ int test(char *URL)
   multi_setopt(m, CURLMOPT_CONTENT_LENGTH_PENALTY_SIZE, 15000L);
   multi_setopt(m, CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE, 10000L);
 
-  multi_setopt(m, CURLMOPT_PIPELINING_SITE_BL, site_blacklist);
-  multi_setopt(m, CURLMOPT_PIPELINING_SERVER_BL, server_blacklist);
+  multi_setopt(m, CURLMOPT_PIPELINING_SITE_BL, site_blocklist);
+  multi_setopt(m, CURLMOPT_PIPELINING_SERVER_BL, server_blocklist);
 
   last_handle_add = tutil_tvnow();
 
diff --git a/tests/manpage-scan.pl b/tests/manpage-scan.pl
index ba6577c18..10d2d15a1 100755
--- a/tests/manpage-scan.pl
+++ b/tests/manpage-scan.pl
@@ -6,7 +6,7 @@
 #                            | (__| |_| |  _ <| |___
 #                             \___|\___/|_| \_\_____|
 #
-# Copyright (C) 2016 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
+# Copyright (C) 2016 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
 #
 # This software is licensed as described in the file COPYING, which
 # you should have received as part of this distribution. The terms
@@ -130,7 +130,7 @@ scanmanpage("$root/docs/libcurl/curl_easy_setopt.3", @curlopt);
 scanmanpage("$root/docs/libcurl/curl_easy_getinfo.3", @curlinfo);
 scanmanpage("$root/docs/libcurl/curl_multi_setopt.3", @curlmopt);
 
-# using this hash array, we can whitelist specific options
+# using this hash array, we can skip specific options
 my %opts = (
     # pretend these --no options exists in tool_getparam.c
     '--no-alpn' => 1,