File gopher_removal.patch of Package squid.32280

Index: squid-4.17/doc/debug-sections.txt
===================================================================
--- squid-4.17.orig/doc/debug-sections.txt
+++ squid-4.17/doc/debug-sections.txt
@@ -27,7 +27,6 @@ section 06    Disk I/O Routines
 section 07    Multicast
 section 08    Swap File Bitmap
 section 09    File Transfer Protocol (FTP)
-section 10    Gopher
 section 11    Hypertext Transfer Protocol (HTTP)
 section 12    Internet Cache Protocol (ICP)
 section 13    High Level Memory Pool Management
Index: squid-4.17/src/FwdState.cc
===================================================================
--- squid-4.17.orig/src/FwdState.cc
+++ squid-4.17/src/FwdState.cc
@@ -28,7 +28,6 @@
 #include "fde.h"
 #include "FwdState.h"
 #include "globals.h"
-#include "gopher.h"
 #include "hier_code.h"
 #include "http.h"
 #include "http/Stream.h"
@@ -1007,10 +1006,6 @@ FwdState::dispatch()
             httpStart(this);
             break;
 
-        case AnyP::PROTO_GOPHER:
-            gopherStart(this);
-            break;
-
         case AnyP::PROTO_FTP:
             if (request->flags.ftpNative)
                 Ftp::StartRelay(this);
Index: squid-4.17/src/HttpRequest.cc
===================================================================
--- squid-4.17.orig/src/HttpRequest.cc
+++ squid-4.17/src/HttpRequest.cc
@@ -18,7 +18,6 @@
 #include "Downloader.h"
 #include "err_detail_type.h"
 #include "globals.h"
-#include "gopher.h"
 #include "http.h"
 #include "http/one/RequestParser.h"
 #include "http/Stream.h"
@@ -556,11 +555,6 @@ HttpRequest::maybeCacheable()
             return false;
         break;
 
-    case AnyP::PROTO_GOPHER:
-        if (!gopherCachable(this))
-            return false;
-        break;
-
     case AnyP::PROTO_CACHE_OBJECT:
         return false;
 
Index: squid-4.17/src/IoStats.h
===================================================================
--- squid-4.17.orig/src/IoStats.h
+++ squid-4.17/src/IoStats.h
@@ -22,7 +22,7 @@ public:
         int writes;
         int write_hist[histSize];
     }
-    Http, Ftp, Gopher;
+    Http, Ftp;
 };
 
 #endif /* SQUID_IOSTATS_H_ */
Index: squid-4.17/src/Makefile.am
===================================================================
--- squid-4.17.orig/src/Makefile.am
+++ squid-4.17/src/Makefile.am
@@ -306,8 +306,6 @@ squid_SOURCES = \
 	FwdState.h \
 	Generic.h \
 	globals.h \
-	gopher.h \
-	gopher.cc \
 	helper.cc \
 	helper.h \
 	hier_code.h \
@@ -1260,8 +1258,6 @@ tests_testCacheManager_SOURCES = \
 	fqdncache.cc \
 	FwdState.cc \
 	FwdState.h \
-	gopher.h \
-	gopher.cc \
 	hier_code.h \
 	helper.cc \
 	$(HTCPSOURCE) \
@@ -1679,8 +1675,6 @@ tests_testEvent_SOURCES = \
 	fqdncache.cc \
 	FwdState.cc \
 	FwdState.h \
-	gopher.h \
-	gopher.cc \
 	helper.cc \
 	hier_code.h \
 	$(HTCPSOURCE) \
@@ -1915,8 +1909,6 @@ tests_testEventLoop_SOURCES = \
 	fqdncache.cc \
 	FwdState.cc \
 	FwdState.h \
-	gopher.h \
-	gopher.cc \
 	helper.cc \
 	hier_code.h \
 	$(HTCPSOURCE) \
@@ -2146,8 +2138,6 @@ tests_test_http_range_SOURCES = \
 	fqdncache.cc \
 	FwdState.cc \
 	FwdState.h \
-	gopher.h \
-	gopher.cc \
 	helper.cc \
 	hier_code.h \
 	$(HTCPSOURCE) \
@@ -2462,8 +2452,6 @@ tests_testHttpRequest_SOURCES = \
 	fqdncache.cc \
 	FwdState.cc \
 	FwdState.h \
-	gopher.h \
-	gopher.cc \
 	helper.cc \
 	hier_code.h \
 	$(HTCPSOURCE) \
@@ -3308,8 +3296,6 @@ tests_testURL_SOURCES = \
 	fqdncache.cc \
 	FwdState.cc \
 	FwdState.h \
-	gopher.h \
-	gopher.cc \
 	helper.cc \
 	hier_code.h \
 	$(HTCPSOURCE) \
Index: squid-4.17/src/adaptation/ecap/Host.cc
===================================================================
--- squid-4.17.orig/src/adaptation/ecap/Host.cc
+++ squid-4.17/src/adaptation/ecap/Host.cc
@@ -49,7 +49,6 @@ Adaptation::Ecap::Host::Host()
     libecap::protocolHttp.assignHostId(AnyP::PROTO_HTTP);
     libecap::protocolHttps.assignHostId(AnyP::PROTO_HTTPS);
     libecap::protocolFtp.assignHostId(AnyP::PROTO_FTP);
-    libecap::protocolGopher.assignHostId(AnyP::PROTO_GOPHER);
     libecap::protocolWais.assignHostId(AnyP::PROTO_WAIS);
     libecap::protocolUrn.assignHostId(AnyP::PROTO_URN);
     libecap::protocolWhois.assignHostId(AnyP::PROTO_WHOIS);
Index: squid-4.17/src/adaptation/ecap/MessageRep.cc
===================================================================
--- squid-4.17.orig/src/adaptation/ecap/MessageRep.cc
+++ squid-4.17/src/adaptation/ecap/MessageRep.cc
@@ -140,8 +140,6 @@ Adaptation::Ecap::FirstLineRep::protocol
         return libecap::protocolHttps;
     case AnyP::PROTO_FTP:
         return libecap::protocolFtp;
-    case AnyP::PROTO_GOPHER:
-        return libecap::protocolGopher;
     case AnyP::PROTO_WAIS:
         return libecap::protocolWais;
     case AnyP::PROTO_WHOIS:
Index: squid-4.17/src/anyp/ProtocolType.h
===================================================================
--- squid-4.17.orig/src/anyp/ProtocolType.h
+++ squid-4.17/src/anyp/ProtocolType.h
@@ -27,7 +27,6 @@ typedef enum {
     PROTO_HTTPS,
     PROTO_COAP,
     PROTO_COAPS,
-    PROTO_GOPHER,
     PROTO_WAIS,
     PROTO_CACHE_OBJECT,
     PROTO_ICP,
Index: squid-4.17/src/anyp/Uri.cc
===================================================================
--- squid-4.17.orig/src/anyp/Uri.cc
+++ squid-4.17/src/anyp/Uri.cc
@@ -885,8 +885,6 @@ urlCheckRequest(const HttpRequest * r)
         if (r->method == Http::METHOD_PUT)
             rc = 1;
 
-    case AnyP::PROTO_GOPHER:
-
     case AnyP::PROTO_WAIS:
 
     case AnyP::PROTO_WHOIS:
Index: squid-4.17/src/anyp/UriScheme.cc
===================================================================
--- squid-4.17.orig/src/anyp/UriScheme.cc
+++ squid-4.17/src/anyp/UriScheme.cc
@@ -87,9 +87,6 @@ AnyP::UriScheme::defaultPort() const
         // Assuming IANA policy of allocating same port for base and TLS protocol versions will occur.
         return 5683;
 
-    case AnyP::PROTO_GOPHER:
-        return 70;
-
     case AnyP::PROTO_WAIS:
         return 210;
 
Index: squid-4.17/src/cf.data.pre
===================================================================
--- squid-4.17.orig/src/cf.data.pre
+++ squid-4.17/src/cf.data.pre
@@ -1513,7 +1513,6 @@ acl SSL_ports port 443
 acl Safe_ports port 80		# http
 acl Safe_ports port 21		# ftp
 acl Safe_ports port 443		# https
-acl Safe_ports port 70		# gopher
 acl Safe_ports port 210		# wais
 acl Safe_ports port 1025-65535	# unregistered ports
 acl Safe_ports port 280		# http-mgmt
@@ -4563,7 +4562,7 @@ DOC_START
 		[http::]<bs	Number of HTTP-equivalent message body bytes 
 				received from the next hop, excluding chunked
 				transfer encoding and control messages.
-				Generated FTP/Gopher listings are treated as
+				Generated FTP listings are treated as
 				received bodies.
 
 	    TIMING
@@ -5992,7 +5991,6 @@ NOCOMMENT_START
 # Add any of your own refresh_pattern entries above these.
 #
 refresh_pattern ^ftp:		1440	20%	10080
-refresh_pattern ^gopher:	1440	0%	1440
 refresh_pattern -i (/cgi-bin/|\?) 0	0%	0
 refresh_pattern .		0	20%	4320
 NOCOMMENT_END
@@ -8644,7 +8642,7 @@ DOC_START
 	client IP can use. Any more than this and Squid will begin to drop
 	new connections from the client until it closes some links.
 
-	Note that this is a global limit. It affects all HTTP, HTCP, Gopher and FTP
+	Note that this is a global limit. It affects all HTTP, HTCP and FTP
 	connections from the client. For finer control use the ACL access controls.
 
 	Requires client_db to be enabled (the default).
Index: squid-4.17/src/client_side_request.cc
===================================================================
--- squid-4.17.orig/src/client_side_request.cc
+++ squid-4.17/src/client_side_request.cc
@@ -33,7 +33,6 @@
 #include "fd.h"
 #include "fde.h"
 #include "format/Token.h"
-#include "gopher.h"
 #include "helper.h"
 #include "helper/Reply.h"
 #include "http.h"
@@ -965,9 +964,6 @@ clientHierarchical(ClientHttpRequest * h
     if (request->url.getScheme() == AnyP::PROTO_HTTP)
         return method.respMaybeCacheable();
 
-    if (request->url.getScheme() == AnyP::PROTO_GOPHER)
-        return gopherCachable(request);
-
     if (request->url.getScheme() == AnyP::PROTO_CACHE_OBJECT)
         return 0;
 
Index: squid-4.17/src/gopher.cc
===================================================================
--- squid-4.17.orig/src/gopher.cc
+++ /dev/null
@@ -1,977 +0,0 @@
-/*
- * Copyright (C) 1996-2021 The Squid Software Foundation and contributors
- *
- * Squid software is distributed under GPLv2+ license and includes
- * contributions from numerous individuals and organizations.
- * Please see the COPYING and CONTRIBUTORS files for details.
- */
-
-/* DEBUG: section 10    Gopher */
-
-#include "squid.h"
-#include "comm.h"
-#include "comm/Read.h"
-#include "comm/Write.h"
-#include "errorpage.h"
-#include "fd.h"
-#include "FwdState.h"
-#include "globals.h"
-#include "html_quote.h"
-#include "HttpReply.h"
-#include "HttpRequest.h"
-#include "MemBuf.h"
-#include "mime.h"
-#include "parser/Tokenizer.h"
-#include "rfc1738.h"
-#include "SquidConfig.h"
-#include "SquidTime.h"
-#include "StatCounters.h"
-#include "Store.h"
-#include "tools.h"
-
-#if USE_DELAY_POOLS
-#include "DelayPools.h"
-#include "MemObject.h"
-#endif
-
-/* gopher type code from rfc. Anawat. */
-#define GOPHER_FILE         '0'
-#define GOPHER_DIRECTORY    '1'
-#define GOPHER_CSO          '2'
-#define GOPHER_ERROR        '3'
-#define GOPHER_MACBINHEX    '4'
-#define GOPHER_DOSBIN       '5'
-#define GOPHER_UUENCODED    '6'
-#define GOPHER_INDEX        '7'
-#define GOPHER_TELNET       '8'
-#define GOPHER_BIN          '9'
-#define GOPHER_REDUNT       '+'
-#define GOPHER_3270         'T'
-#define GOPHER_GIF          'g'
-#define GOPHER_IMAGE        'I'
-
-#define GOPHER_HTML         'h'
-#define GOPHER_INFO         'i'
-
-///  W3 address
-#define GOPHER_WWW          'w'
-#define GOPHER_SOUND        's'
-
-#define GOPHER_PLUS_IMAGE   ':'
-#define GOPHER_PLUS_MOVIE   ';'
-#define GOPHER_PLUS_SOUND   '<'
-
-#define GOPHER_PORT         70
-
-#define TAB                 '\t'
-
-// TODO CODE: should this be a protocol-specific thing?
-#define TEMP_BUF_SIZE       4096
-
-#define MAX_CSO_RESULT      1024
-
-/**
- * Gopher Gateway Internals
- *
- * Gopher is somewhat complex and gross because it must convert from
- * the Gopher protocol to HTTP.
- */
-class GopherStateData
-{
-    CBDATA_CLASS(GopherStateData);
-
-public:
-    GopherStateData(FwdState *aFwd) :
-        entry(aFwd->entry),
-        conversion(NORMAL),
-        HTML_header_added(0),
-        HTML_pre(0),
-        type_id(GOPHER_FILE /* '0' */),
-        cso_recno(0),
-        len(0),
-        buf(NULL),
-        fwd(aFwd)
-    {
-        *request = 0;
-        buf = (char *)memAllocate(MEM_4K_BUF);
-        entry->lock("gopherState");
-        *replybuf = 0;
-    }
-    ~GopherStateData() {if(buf) swanSong();}
-
-    /* AsyncJob API emulated */
-    void deleteThis(const char *aReason);
-    void swanSong();
-
-public:
-    StoreEntry *entry;
-    enum {
-        NORMAL,
-        HTML_DIR,
-        HTML_INDEX_RESULT,
-        HTML_CSO_RESULT,
-        HTML_INDEX_PAGE,
-        HTML_CSO_PAGE
-    } conversion;
-    int HTML_header_added;
-    int HTML_pre;
-    char type_id;
-    char request[MAX_URL];
-    int cso_recno;
-    int len;
-    char *buf;          /* pts to a 4k page */
-    Comm::ConnectionPointer serverConn;
-    FwdState::Pointer fwd;
-    HttpReply::Pointer reply_;
-    char replybuf[BUFSIZ];
-};
-
-CBDATA_CLASS_INIT(GopherStateData);
-
-static CLCB gopherStateFree;
-static void gopherMimeCreate(GopherStateData *);
-static void gopher_request_parse(const HttpRequest * req,
-                                 char *type_id,
-                                 char *request);
-static void gopherEndHTML(GopherStateData *);
-static void gopherToHTML(GopherStateData *, char *inbuf, int len);
-static CTCB gopherTimeout;
-static IOCB gopherReadReply;
-static IOCB gopherSendComplete;
-static PF gopherSendRequest;
-
-static char def_gopher_bin[] = "www/unknown";
-
-static char def_gopher_text[] = "text/plain";
-
-static void
-gopherStateFree(const CommCloseCbParams &params)
-{
-    GopherStateData *gopherState = (GopherStateData *)params.data;
-
-    if (gopherState == NULL)
-        return;
-
-    gopherState->deleteThis("gopherStateFree");
-}
-
-void
-GopherStateData::deleteThis(const char *)
-{
-    swanSong();
-    delete this;
-}
-
-void
-GopherStateData::swanSong()
-{
-    if (entry)
-        entry->unlock("gopherState");
-
-    if (buf) {
-        memFree(buf, MEM_4K_BUF);
-        buf = nullptr;
-    }
-}
-
-/**
- * Create MIME Header for Gopher Data
- */
-static void
-gopherMimeCreate(GopherStateData * gopherState)
-{
-    StoreEntry *entry = gopherState->entry;
-    const char *mime_type = NULL;
-    const char *mime_enc = NULL;
-
-    switch (gopherState->type_id) {
-
-    case GOPHER_DIRECTORY:
-
-    case GOPHER_INDEX:
-
-    case GOPHER_HTML:
-
-    case GOPHER_WWW:
-
-    case GOPHER_CSO:
-        mime_type = "text/html";
-        break;
-
-    case GOPHER_GIF:
-
-    case GOPHER_IMAGE:
-
-    case GOPHER_PLUS_IMAGE:
-        mime_type = "image/gif";
-        break;
-
-    case GOPHER_SOUND:
-
-    case GOPHER_PLUS_SOUND:
-        mime_type = "audio/basic";
-        break;
-
-    case GOPHER_PLUS_MOVIE:
-        mime_type = "video/mpeg";
-        break;
-
-    case GOPHER_MACBINHEX:
-
-    case GOPHER_DOSBIN:
-
-    case GOPHER_UUENCODED:
-
-    case GOPHER_BIN:
-        /* Rightnow We have no idea what it is. */
-        mime_enc = mimeGetContentEncoding(gopherState->request);
-        mime_type = mimeGetContentType(gopherState->request);
-        if (!mime_type)
-            mime_type = def_gopher_bin;
-        break;
-
-    case GOPHER_FILE:
-
-    default:
-        mime_enc = mimeGetContentEncoding(gopherState->request);
-        mime_type = mimeGetContentType(gopherState->request);
-        if (!mime_type)
-            mime_type = def_gopher_text;
-        break;
-    }
-
-    assert(entry->isEmpty());
-
-    HttpReply *reply = new HttpReply;
-    entry->buffer();
-    reply->setHeaders(Http::scOkay, "Gatewaying", mime_type, -1, -1, -2);
-    if (mime_enc)
-        reply->header.putStr(Http::HdrType::CONTENT_ENCODING, mime_enc);
-
-    entry->replaceHttpReply(reply);
-    gopherState->reply_ = reply;
-}
-
-/**
- * Parse a gopher request into components.  By Anawat.
- */
-static void
-gopher_request_parse(const HttpRequest * req, char *type_id, char *request)
-{
-    ::Parser::Tokenizer tok(req->url.path());
-
-    if (request)
-        *request = 0;
-
-    tok.skip('/'); // ignore failures? path could be ab-empty
-
-    if (tok.atEnd()) {
-        *type_id = GOPHER_DIRECTORY;
-        return;
-    }
-
-    static const CharacterSet anyByte("UTF-8",0x00, 0xFF);
-
-    SBuf typeId;
-    (void)tok.prefix(typeId, anyByte, 1); // never fails since !atEnd()
-    *type_id = typeId[0];
-
-    if (request) {
-        SBufToCstring(request, tok.remaining().substr(0, MAX_URL-1));
-        /* convert %xx to char */
-        rfc1738_unescape(request);
-    }
-}
-
-/**
- * Parse the request to determine whether it is cachable.
- *
- * \param req   Request data.
- * \retval 0    Not cachable.
- * \retval 1    Cachable.
- */
-int
-gopherCachable(const HttpRequest * req)
-{
-    int cachable = 1;
-    char type_id;
-    /* parse to see type */
-    gopher_request_parse(req,
-                         &type_id,
-                         NULL);
-
-    switch (type_id) {
-
-    case GOPHER_INDEX:
-
-    case GOPHER_CSO:
-
-    case GOPHER_TELNET:
-
-    case GOPHER_3270:
-        cachable = 0;
-        break;
-
-    default:
-        cachable = 1;
-    }
-
-    return cachable;
-}
-
-static void
-gopherHTMLHeader(StoreEntry * e, const char *title, const char *substring)
-{
-    storeAppendPrintf(e, "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" \"http://www.w3.org/TR/html4/loose.dtd\">\n");
-    storeAppendPrintf(e, "<HTML><HEAD><TITLE>");
-    storeAppendPrintf(e, title, substring);
-    storeAppendPrintf(e, "</TITLE>");
-    storeAppendPrintf(e, "<STYLE type=\"text/css\"><!--BODY{background-color:#ffffff;font-family:verdana,sans-serif}--></STYLE>\n");
-    storeAppendPrintf(e, "</HEAD>\n<BODY><H1>");
-    storeAppendPrintf(e, title, substring);
-    storeAppendPrintf(e, "</H1>\n");
-}
-
-static void
-gopherHTMLFooter(StoreEntry * e)
-{
-    storeAppendPrintf(e, "<HR noshade size=\"1px\">\n");
-    storeAppendPrintf(e, "<ADDRESS>\n");
-    storeAppendPrintf(e, "Generated %s by %s (%s)\n",
-                      mkrfc1123(squid_curtime),
-                      getMyHostname(),
-                      visible_appname_string);
-    storeAppendPrintf(e, "</ADDRESS></BODY></HTML>\n");
-}
-
-static void
-gopherEndHTML(GopherStateData * gopherState)
-{
-    StoreEntry *e = gopherState->entry;
-
-    if (!gopherState->HTML_header_added) {
-        gopherHTMLHeader(e, "Server Return Nothing", NULL);
-        storeAppendPrintf(e, "<P>The Gopher query resulted in a blank response</P>");
-    } else if (gopherState->HTML_pre) {
-        storeAppendPrintf(e, "</PRE>\n");
-    }
-
-    gopherHTMLFooter(e);
-}
-
-/**
- * Convert Gopher to HTML.
- *
- * Borrow part of code from libwww2 came with Mosaic distribution.
- */
-static void
-gopherToHTML(GopherStateData * gopherState, char *inbuf, int len)
-{
-    char *pos = inbuf;
-    char *lpos = NULL;
-    char *tline = NULL;
-    LOCAL_ARRAY(char, line, TEMP_BUF_SIZE);
-    char *name = NULL;
-    char *selector = NULL;
-    char *host = NULL;
-    char *port = NULL;
-    char *escaped_selector = NULL;
-    const char *icon_url = NULL;
-    char gtype;
-    StoreEntry *entry = NULL;
-
-    memset(line, '\0', TEMP_BUF_SIZE);
-
-    entry = gopherState->entry;
-
-    if (gopherState->conversion == GopherStateData::HTML_INDEX_PAGE) {
-        char *html_url = html_quote(entry->url());
-        gopherHTMLHeader(entry, "Gopher Index %s", html_url);
-        storeAppendPrintf(entry,
-                          "<p>This is a searchable Gopher index. Use the search\n"
-                          "function of your browser to enter search terms.\n"
-                          "<ISINDEX>\n");
-        gopherHTMLFooter(entry);
-        /* now let start sending stuff to client */
-        entry->flush();
-        gopherState->HTML_header_added = 1;
-
-        return;
-    }
-
-    if (gopherState->conversion == GopherStateData::HTML_CSO_PAGE) {
-        char *html_url = html_quote(entry->url());
-        gopherHTMLHeader(entry, "CSO Search of %s", html_url);
-        storeAppendPrintf(entry,
-                          "<P>A CSO database usually contains a phonebook or\n"
-                          "directory.  Use the search function of your browser to enter\n"
-                          "search terms.</P><ISINDEX>\n");
-        gopherHTMLFooter(entry);
-        /* now let start sending stuff to client */
-        entry->flush();
-        gopherState->HTML_header_added = 1;
-
-        return;
-    }
-
-    SBuf outbuf;
-
-    if (!gopherState->HTML_header_added) {
-        if (gopherState->conversion == GopherStateData::HTML_CSO_RESULT)
-            gopherHTMLHeader(entry, "CSO Search Result", NULL);
-        else
-            gopherHTMLHeader(entry, "Gopher Menu", NULL);
-
-        outbuf.append ("<PRE>");
-
-        gopherState->HTML_header_added = 1;
-
-        gopherState->HTML_pre = 1;
-    }
-
-    while (pos < inbuf + len) {
-        int llen;
-        int left = len - (pos - inbuf);
-        lpos = (char *)memchr(pos, '\n', left);
-        if (lpos) {
-            ++lpos;             /* Next line is after \n */
-            llen = lpos - pos;
-        } else {
-            llen = left;
-        }
-        if (gopherState->len + llen >= TEMP_BUF_SIZE) {
-            debugs(10, DBG_IMPORTANT, "GopherHTML: Buffer overflow. Lost some data on URL: " << entry->url()  );
-            llen = TEMP_BUF_SIZE - gopherState->len - 1;
-        }
-        if (!lpos) {
-            /* there is no complete line in inbuf */
-            /* copy it to temp buffer */
-            /* note: llen is adjusted above */
-            memcpy(gopherState->buf + gopherState->len, pos, llen);
-            gopherState->len += llen;
-            break;
-        }
-        if (gopherState->len != 0) {
-            /* there is something left from last tx. */
-            memcpy(line, gopherState->buf, gopherState->len);
-            memcpy(line + gopherState->len, pos, llen);
-            llen += gopherState->len;
-            gopherState->len = 0;
-        } else {
-            memcpy(line, pos, llen);
-        }
-        line[llen + 1] = '\0';
-        /* move input to next line */
-        pos = lpos;
-
-        /* at this point. We should have one line in buffer to process */
-
-        if (*line == '.') {
-            /* skip it */
-            memset(line, '\0', TEMP_BUF_SIZE);
-            continue;
-        }
-
-        switch (gopherState->conversion) {
-
-        case GopherStateData::HTML_INDEX_RESULT:
-
-        case GopherStateData::HTML_DIR: {
-            tline = line;
-            gtype = *tline;
-            ++tline;
-            name = tline;
-            selector = strchr(tline, TAB);
-
-            if (selector) {
-                *selector = '\0';
-                ++selector;
-                host = strchr(selector, TAB);
-
-                if (host) {
-                    *host = '\0';
-                    ++host;
-                    port = strchr(host, TAB);
-
-                    if (port) {
-                        char *junk;
-                        port[0] = ':';
-                        junk = strchr(host, TAB);
-
-                        if (junk)
-                            *junk++ = 0;    /* Chop port */
-                        else {
-                            junk = strchr(host, '\r');
-
-                            if (junk)
-                                *junk++ = 0;    /* Chop port */
-                            else {
-                                junk = strchr(host, '\n');
-
-                                if (junk)
-                                    *junk++ = 0;    /* Chop port */
-                            }
-                        }
-
-                        if ((port[1] == '0') && (!port[2]))
-                            port[0] = 0;    /* 0 means none */
-                    }
-
-                    /* escape a selector here */
-                    escaped_selector = xstrdup(rfc1738_escape_part(selector));
-
-                    switch (gtype) {
-
-                    case GOPHER_DIRECTORY:
-                        icon_url = mimeGetIconURL("internal-menu");
-                        break;
-
-                    case GOPHER_HTML:
-
-                    case GOPHER_FILE:
-                        icon_url = mimeGetIconURL("internal-text");
-                        break;
-
-                    case GOPHER_INDEX:
-
-                    case GOPHER_CSO:
-                        icon_url = mimeGetIconURL("internal-index");
-                        break;
-
-                    case GOPHER_IMAGE:
-
-                    case GOPHER_GIF:
-
-                    case GOPHER_PLUS_IMAGE:
-                        icon_url = mimeGetIconURL("internal-image");
-                        break;
-
-                    case GOPHER_SOUND:
-
-                    case GOPHER_PLUS_SOUND:
-                        icon_url = mimeGetIconURL("internal-sound");
-                        break;
-
-                    case GOPHER_PLUS_MOVIE:
-                        icon_url = mimeGetIconURL("internal-movie");
-                        break;
-
-                    case GOPHER_TELNET:
-
-                    case GOPHER_3270:
-                        icon_url = mimeGetIconURL("internal-telnet");
-                        break;
-
-                    case GOPHER_BIN:
-
-                    case GOPHER_MACBINHEX:
-
-                    case GOPHER_DOSBIN:
-
-                    case GOPHER_UUENCODED:
-                        icon_url = mimeGetIconURL("internal-binary");
-                        break;
-
-                    case GOPHER_INFO:
-                        icon_url = NULL;
-                        break;
-
-                    default:
-                        icon_url = mimeGetIconURL("internal-unknown");
-                        break;
-                    }
-
-                    if ((gtype == GOPHER_TELNET) || (gtype == GOPHER_3270)) {
-                        if (strlen(escaped_selector) != 0)
-                            outbuf.appendf("<IMG border=\"0\" SRC=\"%s\"> <A HREF=\"telnet://%s@%s%s%s/\">%s</A>\n",
-                                           icon_url, escaped_selector, rfc1738_escape_part(host),
-                                           *port ? ":" : "", port, html_quote(name));
-                        else
-                            outbuf.appendf("<IMG border=\"0\" SRC=\"%s\"> <A HREF=\"telnet://%s%s%s/\">%s</A>\n",
-                                           icon_url, rfc1738_escape_part(host), *port ? ":" : "",
-                                           port, html_quote(name));
-
-                    } else if (gtype == GOPHER_INFO) {
-                        outbuf.appendf("\t%s\n", html_quote(name));
-                    } else {
-                        if (strncmp(selector, "GET /", 5) == 0) {
-                            /* WWW link */
-                            outbuf.appendf("<IMG border=\"0\" SRC=\"%s\"> <A HREF=\"http://%s/%s\">%s</A>\n",
-                                           icon_url, host, rfc1738_escape_unescaped(selector + 5), html_quote(name));
-                        } else if (gtype == GOPHER_WWW) {
-                            outbuf.appendf("<IMG border=\"0\" SRC=\"%s\"> <A HREF=\"gopher://%s/%c%s\">%s</A>\n",
-                                           icon_url, rfc1738_escape_unescaped(selector), html_quote(name));
-                        } else {
-                            /* Standard link */
-                            outbuf.appendf("<IMG border=\"0\" SRC=\"%s\"> <A HREF=\"gopher://%s/%c%s\">%s</A>\n",
-                                           icon_url, host, gtype, escaped_selector, html_quote(name));
-                        }
-                    }
-
-                    safe_free(escaped_selector);
-                } else {
-                    memset(line, '\0', TEMP_BUF_SIZE);
-                    continue;
-                }
-            } else {
-                memset(line, '\0', TEMP_BUF_SIZE);
-                continue;
-            }
-
-            break;
-            }           /* HTML_DIR, HTML_INDEX_RESULT */
-
-        case GopherStateData::HTML_CSO_RESULT: {
-            if (line[0] == '-') {
-                int code, recno;
-                char *s_code, *s_recno, *result;
-
-                s_code = strtok(line + 1, ":\n");
-                s_recno = strtok(NULL, ":\n");
-                result = strtok(NULL, "\n");
-
-                if (!result)
-                    break;
-
-                code = atoi(s_code);
-
-                recno = atoi(s_recno);
-
-                if (code != 200)
-                    break;
-
-                if (gopherState->cso_recno != recno) {
-                    outbuf.appendf("</PRE><HR noshade size=\"1px\"><H2>Record# %d<br><i>%s</i></H2>\n<PRE>", recno, html_quote(result));
-                    gopherState->cso_recno = recno;
-                } else {
-                    outbuf.appendf("%s\n", html_quote(result));
-                }
-
-                break;
-            } else {
-                int code;
-                char *s_code, *result;
-
-                s_code = strtok(line, ":");
-                result = strtok(NULL, "\n");
-
-                if (!result)
-                    break;
-
-                code = atoi(s_code);
-
-                switch (code) {
-
-                case 200: {
-                    /* OK */
-                    /* Do nothing here */
-                    break;
-                }
-
-                case 102:   /* Number of matches */
-
-                case 501:   /* No Match */
-
-                case 502: { /* Too Many Matches */
-                    /* Print the message the server returns */
-                    outbuf.appendf("</PRE><HR noshade size=\"1px\"><H2>%s</H2>\n<PRE>", html_quote(result));
-                    break;
-                }
-
-                }
-            }
-
-            }           /* HTML_CSO_RESULT */
-
-        default:
-            break;      /* do nothing */
-
-        }           /* switch */
-
-    }               /* while loop */
-
-    if (outbuf.length() > 0) {
-        entry->append(outbuf.rawContent(), outbuf.length());
-        /* now let start sending stuff to client */
-        entry->flush();
-    }
-
-    return;
-}
-
-static void
-gopherTimeout(const CommTimeoutCbParams &io)
-{
-    GopherStateData *gopherState = static_cast<GopherStateData *>(io.data);
-    debugs(10, 4, HERE << io.conn << ": '" << gopherState->entry->url() << "'" );
-
-    gopherState->fwd->fail(new ErrorState(ERR_READ_TIMEOUT, Http::scGatewayTimeout, gopherState->fwd->request));
-
-    if (Comm::IsConnOpen(io.conn))
-        io.conn->close();
-}
-
-/**
- * This will be called when data is ready to be read from fd.
- * Read until error or connection closed.
- */
-static void
-gopherReadReply(const Comm::ConnectionPointer &conn, char *buf, size_t len, Comm::Flag flag, int xerrno, void *data)
-{
-    GopherStateData *gopherState = (GopherStateData *)data;
-    StoreEntry *entry = gopherState->entry;
-    int clen;
-    int bin;
-    size_t read_sz = BUFSIZ;
-#if USE_DELAY_POOLS
-    DelayId delayId = entry->mem_obj->mostBytesAllowed();
-#endif
-
-    /* Bail out early on Comm::ERR_CLOSING - close handlers will tidy up for us */
-
-    if (flag == Comm::ERR_CLOSING) {
-        return;
-    }
-
-    assert(buf == gopherState->replybuf);
-
-    // XXX: Should update delayId, statCounter, etc. before bailing
-    if (!entry->isAccepting()) {
-        debugs(10, 3, "terminating due to bad " << *entry);
-        // TODO: Do not abuse connection for triggering cleanup.
-        gopherState->serverConn->close();
-        return;
-    }
-
-#if USE_DELAY_POOLS
-    read_sz = delayId.bytesWanted(1, read_sz);
-#endif
-
-    /* leave one space for \0 in gopherToHTML */
-
-    if (flag == Comm::OK && len > 0) {
-#if USE_DELAY_POOLS
-        delayId.bytesIn(len);
-#endif
-
-        statCounter.server.all.kbytes_in += len;
-        statCounter.server.other.kbytes_in += len;
-    }
-
-    debugs(10, 5, HERE << conn << " read len=" << len);
-
-    if (flag == Comm::OK && len > 0) {
-        AsyncCall::Pointer nil;
-        commSetConnTimeout(conn, Config.Timeout.read, nil);
-        ++IOStats.Gopher.reads;
-
-        for (clen = len - 1, bin = 0; clen; ++bin)
-            clen >>= 1;
-
-        ++IOStats.Gopher.read_hist[bin];
-
-        HttpRequest *req = gopherState->fwd->request;
-        if (req->hier.bodyBytesRead < 0) {
-            req->hier.bodyBytesRead = 0;
-            // first bytes read, update Reply flags:
-            gopherState->reply_->sources |= HttpMsg::srcGopher;
-        }
-
-        req->hier.bodyBytesRead += len;
-    }
-
-    if (flag != Comm::OK) {
-        debugs(50, DBG_IMPORTANT, MYNAME << "error reading: " << xstrerr(xerrno));
-
-        if (ignoreErrno(xerrno)) {
-            AsyncCall::Pointer call = commCbCall(5,4, "gopherReadReply",
-                                                 CommIoCbPtrFun(gopherReadReply, gopherState));
-            comm_read(conn, buf, read_sz, call);
-        } else {
-            ErrorState *err = new ErrorState(ERR_READ_ERROR, Http::scInternalServerError, gopherState->fwd->request);
-            err->xerrno = xerrno;
-            gopherState->fwd->fail(err);
-            gopherState->serverConn->close();
-        }
-    } else if (len == 0 && entry->isEmpty()) {
-        gopherState->fwd->fail(new ErrorState(ERR_ZERO_SIZE_OBJECT, Http::scServiceUnavailable, gopherState->fwd->request));
-        gopherState->serverConn->close();
-    } else if (len == 0) {
-        /* Connection closed; retrieval done. */
-        /* flush the rest of data in temp buf if there is one. */
-
-        if (gopherState->conversion != GopherStateData::NORMAL)
-            gopherEndHTML(gopherState);
-
-        entry->timestampsSet();
-        entry->flush();
-        gopherState->fwd->complete();
-        gopherState->serverConn->close();
-    } else {
-        if (gopherState->conversion != GopherStateData::NORMAL) {
-            gopherToHTML(gopherState, buf, len);
-        } else {
-            entry->append(buf, len);
-        }
-        AsyncCall::Pointer call = commCbCall(5,4, "gopherReadReply",
-                                             CommIoCbPtrFun(gopherReadReply, gopherState));
-        comm_read(conn, buf, read_sz, call);
-    }
-}
-
-/**
- * This will be called when request write is complete. Schedule read of reply.
- */
-static void
-gopherSendComplete(const Comm::ConnectionPointer &conn, char *, size_t size, Comm::Flag errflag, int xerrno, void *data)
-{
-    GopherStateData *gopherState = (GopherStateData *) data;
-    StoreEntry *entry = gopherState->entry;
-    debugs(10, 5, HERE << conn << " size: " << size << " errflag: " << errflag);
-
-    if (size > 0) {
-        fd_bytes(conn->fd, size, FD_WRITE);
-        statCounter.server.all.kbytes_out += size;
-        statCounter.server.other.kbytes_out += size;
-    }
-
-    if (!entry->isAccepting()) {
-        debugs(10, 3, "terminating due to bad " << *entry);
-        // TODO: Do not abuse connection for triggering cleanup.
-        gopherState->serverConn->close();
-        return;
-    }
-
-    if (errflag) {
-        ErrorState *err;
-        err = new ErrorState(ERR_WRITE_ERROR, Http::scServiceUnavailable, gopherState->fwd->request);
-        err->xerrno = xerrno;
-        err->port = gopherState->fwd->request->url.port();
-        err->url = xstrdup(entry->url());
-        gopherState->fwd->fail(err);
-        gopherState->serverConn->close();
-        return;
-    }
-
-    /*
-     * OK. We successfully reach remote site.  Start MIME typing
-     * stuff.  Do it anyway even though request is not HTML type.
-     */
-    entry->buffer();
-
-    gopherMimeCreate(gopherState);
-
-    switch (gopherState->type_id) {
-
-    case GOPHER_DIRECTORY:
-        /* we got to convert it first */
-        gopherState->conversion = GopherStateData::HTML_DIR;
-        gopherState->HTML_header_added = 0;
-        break;
-
-    case GOPHER_INDEX:
-        /* we got to convert it first */
-        gopherState->conversion = GopherStateData::HTML_INDEX_RESULT;
-        gopherState->HTML_header_added = 0;
-        break;
-
-    case GOPHER_CSO:
-        /* we got to convert it first */
-        gopherState->conversion = GopherStateData::HTML_CSO_RESULT;
-        gopherState->cso_recno = 0;
-        gopherState->HTML_header_added = 0;
-        break;
-
-    default:
-        gopherState->conversion = GopherStateData::NORMAL;
-        entry->flush();
-    }
-
-    /* Schedule read reply. */
-    AsyncCall::Pointer call =  commCbCall(5,5, "gopherReadReply",
-                                          CommIoCbPtrFun(gopherReadReply, gopherState));
-    entry->delayAwareRead(conn, gopherState->replybuf, BUFSIZ, call);
-}
-
-/**
- * This will be called when connect completes. Write request.
- */
-static void
-gopherSendRequest(int, void *data)
-{
-    GopherStateData *gopherState = (GopherStateData *)data;
-    MemBuf mb;
-    mb.init();
-
-    if (gopherState->type_id == GOPHER_CSO) {
-        const char *t = strchr(gopherState->request, '?');
-
-        if (t)
-            ++t;        /* skip the ? */
-        else
-            t = "";
-
-        mb.appendf("query %s\r\nquit", t);
-    } else {
-        if (gopherState->type_id == GOPHER_INDEX) {
-            if (char *t = strchr(gopherState->request, '?'))
-                *t = '\t';
-        }
-        mb.append(gopherState->request, strlen(gopherState->request));
-    }
-    mb.append("\r\n", 2);
-
-    debugs(10, 5, gopherState->serverConn);
-    AsyncCall::Pointer call = commCbCall(5,5, "gopherSendComplete",
-                                         CommIoCbPtrFun(gopherSendComplete, gopherState));
-    Comm::Write(gopherState->serverConn, &mb, call);
-
-    if (!gopherState->entry->makePublic())
-        gopherState->entry->makePrivate(true);
-}
-
-void
-gopherStart(FwdState * fwd)
-{
-    GopherStateData *gopherState = new GopherStateData(fwd);
-
-    debugs(10, 3, gopherState->entry->url());
-
-    ++ statCounter.server.all.requests;
-
-    ++ statCounter.server.other.requests;
-
-    /* Parse url. */
-    gopher_request_parse(fwd->request,
-                         &gopherState->type_id, gopherState->request);
-
-    comm_add_close_handler(fwd->serverConnection()->fd, gopherStateFree, gopherState);
-
-    if (((gopherState->type_id == GOPHER_INDEX) || (gopherState->type_id == GOPHER_CSO))
-            && (strchr(gopherState->request, '?') == NULL)) {
-        /* Index URL without query word */
-        /* We have to generate search page back to client. No need for connection */
-        gopherMimeCreate(gopherState);
-
-        if (gopherState->type_id == GOPHER_INDEX) {
-            gopherState->conversion = GopherStateData::HTML_INDEX_PAGE;
-        } else {
-            if (gopherState->type_id == GOPHER_CSO) {
-                gopherState->conversion = GopherStateData::HTML_CSO_PAGE;
-            } else {
-                gopherState->conversion = GopherStateData::HTML_INDEX_PAGE;
-            }
-        }
-
-        gopherToHTML(gopherState, (char *) NULL, 0);
-        fwd->complete();
-        return;
-    }
-
-    gopherState->serverConn = fwd->serverConnection();
-    gopherSendRequest(fwd->serverConnection()->fd, gopherState);
-    AsyncCall::Pointer timeoutCall = commCbCall(5, 4, "gopherTimeout",
-                                     CommTimeoutCbPtrFun(gopherTimeout, gopherState));
-    commSetConnTimeout(fwd->serverConnection(), Config.Timeout.read, timeoutCall);
-}
-
Index: squid-4.17/src/gopher.h
===================================================================
--- squid-4.17.orig/src/gopher.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * Copyright (C) 1996-2021 The Squid Software Foundation and contributors
- *
- * Squid software is distributed under GPLv2+ license and includes
- * contributions from numerous individuals and organizations.
- * Please see the COPYING and CONTRIBUTORS files for details.
- */
-
-/* DEBUG: section 10    Gopher */
-
-#ifndef SQUID_GOPHER_H_
-#define SQUID_GOPHER_H_
-
-class FwdState;
-class HttpRequest;
-
-/**
- \defgroup ServerProtocolGopherAPI Server-Side Gopher API
- \ingroup ServerProtocol
- */
-
-/// \ingroup ServerProtocolGopherAPI
-void gopherStart(FwdState *);
-
-/// \ingroup ServerProtocolGopherAPI
-int gopherCachable(const HttpRequest *);
-
-#endif /* SQUID_GOPHER_H_ */
-
Index: squid-4.17/src/mgr/IoAction.cc
===================================================================
--- squid-4.17.orig/src/mgr/IoAction.cc
+++ squid-4.17/src/mgr/IoAction.cc
@@ -35,9 +35,6 @@ Mgr::IoActionData::operator += (const Io
     ftp_reads += stats.ftp_reads;
     for (int i = 0; i < IoStats::histSize; ++i)
         ftp_read_hist[i] += stats.ftp_read_hist[i];
-    gopher_reads += stats.gopher_reads;
-    for (int i = 0; i < IoStats::histSize; ++i)
-        gopher_read_hist[i] += stats.gopher_read_hist[i];
 
     return *this;
 }
Index: squid-4.17/src/mgr/IoAction.h
===================================================================
--- squid-4.17.orig/src/mgr/IoAction.h
+++ squid-4.17/src/mgr/IoAction.h
@@ -27,10 +27,8 @@ public:
 public:
     double http_reads;
     double ftp_reads;
-    double gopher_reads;
     double http_read_hist[IoStats::histSize];
     double ftp_read_hist[IoStats::histSize];
-    double gopher_read_hist[IoStats::histSize];
 };
 
 /// implement aggregated 'io' action
Index: squid-4.17/src/squid.8.in
===================================================================
--- squid-4.17.orig/src/squid.8.in
+++ squid-4.17/src/squid.8.in
@@ -25,7 +25,7 @@ command\-line
 .PP
 .B squid
 is a high\-performance proxy caching server for web clients,
-supporting FTP, gopher, ICAP, ICP, HTCP and HTTP data objects.
+supporting FTP, ICAP, ICP, HTCP and HTTP data objects.
 Unlike traditional caching software, 
 Squid handles all requests in a single, non-blocking process.
 .PP
Index: squid-4.17/src/stat.cc
===================================================================
--- squid-4.17.orig/src/stat.cc
+++ squid-4.17/src/stat.cc
@@ -206,12 +206,6 @@ GetIoStats(Mgr::IoActionData& stats)
     for (i = 0; i < IoStats::histSize; ++i) {
         stats.ftp_read_hist[i] = IOStats.Ftp.read_hist[i];
     }
-
-    stats.gopher_reads = IOStats.Gopher.reads;
-
-    for (i = 0; i < IoStats::histSize; ++i) {
-        stats.gopher_read_hist[i] = IOStats.Gopher.read_hist[i];
-    }
 }
 
 void
@@ -245,19 +239,6 @@ DumpIoStats(Mgr::IoActionData& stats, St
     }
 
     storeAppendPrintf(sentry, "\n");
-    storeAppendPrintf(sentry, "Gopher I/O\n");
-    storeAppendPrintf(sentry, "number of reads: %.0f\n", stats.gopher_reads);
-    storeAppendPrintf(sentry, "Read Histogram:\n");
-
-    for (i = 0; i < IoStats::histSize; ++i) {
-        storeAppendPrintf(sentry, "%5d-%5d: %9.0f %2.0f%%\n",
-                          i ? (1 << (i - 1)) + 1 : 1,
-                          1 << i,
-                          stats.gopher_read_hist[i],
-                          Math::doublePercent(stats.gopher_read_hist[i], stats.gopher_reads));
-    }
-
-    storeAppendPrintf(sentry, "\n");
 }
 
 static const char *
Index: squid-4.17/test-suite/squidconf/regressions-3.4.0.1
===================================================================
--- squid-4.17.orig/test-suite/squidconf/regressions-3.4.0.1
+++ squid-4.17/test-suite/squidconf/regressions-3.4.0.1
@@ -44,6 +44,5 @@ refresh_pattern -i \.(gif|png|jpg|jpeg|i
 refresh_pattern -i \.(iso|avi|wav|mp3|mpeg|swf|flv|x-flv)$ 1440 40% 40320
 
 refresh_pattern ^ftp:           1440    20%     10080
-refresh_pattern ^gopher:        1440    0%      1440
 refresh_pattern -i (/cgi-bin/|\?)       0       0%      0
 refresh_pattern .       0       20%     4320
Index: squid-4.17/src/HttpMsg.h
===================================================================
--- squid-4.17.orig/src/HttpMsg.h
+++ squid-4.17/src/HttpMsg.h
@@ -38,7 +38,6 @@ public:
         srcFtp = 1 << (16 + 1), ///< ftp_port or FTP server
         srcIcap = 1 << (16 + 2), ///< traditional ICAP service without encryption
         srcEcap = 1 << (16 + 3), ///< eCAP service that uses insecure libraries/daemons
-        srcGopher = 1 << (16 + 14), ///< Gopher server
         srcWhois = 1 << (16 + 15), ///< Whois server
         srcUnsafe = 0xFFFF0000,  ///< Unsafe sources mask
         srcSafe = 0x0000FFFF ///< Safe sources mask
Index: squid-4.17/src/anyp/ProtocolType.cc
===================================================================
--- squid-4.17.orig/src/anyp/ProtocolType.cc
+++ squid-4.17/src/anyp/ProtocolType.cc
@@ -13,7 +13,6 @@ const char * ProtocolType_str[] = {
 	"HTTPS",
 	"COAP",
 	"COAPS",
-	"GOPHER",
 	"WAIS",
 	"CACHE_OBJECT",
 	"ICP",
Index: squid-4.17/src/err_type.h
===================================================================
--- squid-4.17.orig/src/err_type.h
+++ squid-4.17/src/err_type.h
@@ -65,7 +65,7 @@ typedef enum {
     ERR_GATEWAY_FAILURE,
 
     /* Special Cases */
-    ERR_DIR_LISTING,            /* Display of remote directory (FTP, Gopher) */
+    ERR_DIR_LISTING,            /* Display of remote directory (FTP) */
     ERR_SQUID_SIGNATURE,        /* not really an error */
     ERR_SHUTTING_DOWN,
     ERR_PROTOCOL_UNKNOWN,
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