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authorCameron Kaiser <ckaiser@floodgap.com>2010-08-12 07:55:48 -0700
committerDaniel Stenberg <daniel@haxx.se>2010-08-25 14:19:58 +0200
commit201637d4682973bcc4a1fd0f4e8d4159300bd0b8 (patch)
tree0c6e010662a4cbed6080f0d10975e890c7f1d214 /lib/gopher.c
parent6b6a3bcb61f2d8f4e80a1e2a5bc62e78904256ed (diff)
downloadcurl-201637d4682973bcc4a1fd0f4e8d4159300bd0b8.tar.gz
Gopher protocol support (initial release)
Diffstat (limited to 'lib/gopher.c')
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diff --git a/lib/gopher.c b/lib/gopher.c
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+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2010, 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
+ * are also available at http://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+
+#include "setup.h"
+
+#ifndef CURL_DISABLE_GOPHER
+
+/* -- WIN32 approved -- */
+#include <stdio.h>
+#include <string.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <ctype.h>
+
+#ifdef WIN32
+#include <time.h>
+#include <io.h>
+#else
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#include <netinet/in.h>
+#ifdef HAVE_SYS_TIME_H
+#include <sys/time.h>
+#endif
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#include <netdb.h>
+#ifdef HAVE_ARPA_INET_H
+#include <arpa/inet.h>
+#endif
+#ifdef HAVE_NET_IF_H
+#include <net/if.h>
+#endif
+#ifdef HAVE_SYS_IOCTL_H
+#include <sys/ioctl.h>
+#endif
+
+#ifdef HAVE_SYS_PARAM_H
+#include <sys/param.h>
+#endif
+
+#ifdef HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#endif
+
+
+#endif
+
+#include "urldata.h"
+#include <curl/curl.h>
+#include "transfer.h"
+#include "sendf.h"
+
+#include "progress.h"
+#include "strequal.h"
+#include "gopher.h"
+#include "rawstr.h"
+
+#define _MPRINTF_REPLACE /* use our functions only */
+#include <curl/mprintf.h>
+
+/* The last #include file should be: */
+#include "memdebug.h"
+
+
+/*
+ * Forward declarations.
+ */
+
+static CURLcode gopher_do(struct connectdata *conn, bool *done);
+
+/*
+ * Gopher protocol handler.
+ * This is also a nice simple template to build off for simple
+ * connect-command-download protocols.
+ */
+
+const struct Curl_handler Curl_handler_gopher = {
+ "GOPHER", /* scheme */
+ ZERO_NULL, /* setup_connection */
+ gopher_do, /* do_it */
+ ZERO_NULL, /* done */
+ ZERO_NULL, /* do_more */
+ ZERO_NULL, /* connect_it */
+ ZERO_NULL, /* connecting */
+ ZERO_NULL, /* doing */
+ ZERO_NULL, /* proto_getsock */
+ ZERO_NULL, /* doing_getsock */
+ ZERO_NULL, /* perform_getsock */
+ ZERO_NULL, /* disconnect */
+ PORT_GOPHER, /* defport */
+ PROT_GOPHER /* protocol */
+};
+
+static CURLcode gopher_do(struct connectdata *conn, bool *done)
+{
+ CURLcode result=CURLE_OK;
+ struct SessionHandle *data=conn->data;
+ curl_socket_t sockfd = conn->sock[FIRSTSOCKET];
+
+ curl_off_t *bytecount = &data->req.bytecount;
+ char *path = data->state.path;
+
+ char *sel;
+
+ *done = TRUE; /* unconditionally */
+
+ /* Create selector. Degenerate cases: / and /1 => convert to "" */
+ if (strlen(path) <= 2)
+ sel = (char *)"";
+ else {
+ char *newp;
+ int i, j, len;
+
+ /* Otherwise, drop / and the first character (i.e., item type) ... */
+ newp = path;
+ newp+=2;
+
+ /* ... then turn ? into TAB for search servers, Veronica, etc. ... */
+ j = strlen(newp);
+ if (j)
+ for(i=0; i<j; i++)
+ newp[i] = ((newp[i] == '?') ? '\x09' : newp[i]);
+
+ /* ... and finally unescape */
+ sel = curl_easy_unescape(data, newp, 0, &len);
+ if (!sel)
+ return CURLE_OUT_OF_MEMORY;
+ }
+
+ result = Curl_sendf(sockfd, conn, "%s\r\n", sel);
+
+ if(result) {
+ failf(data, "Failed sending Gopher request");
+ return result;
+ }
+ Curl_setup_transfer(conn, FIRSTSOCKET, -1, FALSE, bytecount,
+ -1, NULL); /* no upload */
+ return CURLE_OK;
+}
+#endif /*CURL_DISABLE_GOPHER*/