277 lines
7.5 KiB
C
277 lines
7.5 KiB
C
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/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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***************************************************************************/
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#include "curl_setup.h"
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#ifndef CURL_DISABLE_DICT
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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#ifdef HAVE_NETDB_H
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#include <netdb.h>
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#endif
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#ifdef HAVE_ARPA_INET_H
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#include <arpa/inet.h>
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#endif
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#ifdef HAVE_NET_IF_H
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#include <net/if.h>
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#endif
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#ifdef HAVE_SYS_IOCTL_H
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#include <sys/ioctl.h>
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#endif
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#ifdef HAVE_SYS_PARAM_H
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#include <sys/param.h>
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#endif
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#ifdef HAVE_SYS_SELECT_H
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#include <sys/select.h>
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#endif
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#include "urldata.h"
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#include <curl/curl.h>
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#include "transfer.h"
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#include "sendf.h"
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#include "escape.h"
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#include "progress.h"
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#include "dict.h"
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#include "strcase.h"
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#include "curl_memory.h"
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/* The last #include file should be: */
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#include "memdebug.h"
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/*
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* Forward declarations.
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*/
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static CURLcode dict_do(struct connectdata *conn, bool *done);
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/*
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* DICT protocol handler.
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*/
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const struct Curl_handler Curl_handler_dict = {
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"DICT", /* scheme */
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ZERO_NULL, /* setup_connection */
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dict_do, /* do_it */
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ZERO_NULL, /* done */
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ZERO_NULL, /* do_more */
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ZERO_NULL, /* connect_it */
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ZERO_NULL, /* connecting */
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ZERO_NULL, /* doing */
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ZERO_NULL, /* proto_getsock */
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ZERO_NULL, /* doing_getsock */
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ZERO_NULL, /* domore_getsock */
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ZERO_NULL, /* perform_getsock */
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ZERO_NULL, /* disconnect */
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ZERO_NULL, /* readwrite */
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ZERO_NULL, /* connection_check */
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PORT_DICT, /* defport */
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CURLPROTO_DICT, /* protocol */
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PROTOPT_NONE | PROTOPT_NOURLQUERY /* flags */
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};
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static char *unescape_word(struct Curl_easy *data, const char *inputbuff)
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{
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char *newp = NULL;
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char *dictp;
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size_t len;
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CURLcode result = Curl_urldecode(data, inputbuff, 0, &newp, &len, FALSE);
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if(!newp || result)
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return NULL;
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dictp = malloc(len*2 + 1); /* add one for terminating zero */
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if(dictp) {
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char *ptr;
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char ch;
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int olen = 0;
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/* According to RFC2229 section 2.2, these letters need to be escaped with
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\[letter] */
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for(ptr = newp;
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(ch = *ptr) != 0;
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ptr++) {
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if((ch <= 32) || (ch == 127) ||
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(ch == '\'') || (ch == '\"') || (ch == '\\')) {
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dictp[olen++] = '\\';
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}
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dictp[olen++] = ch;
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}
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dictp[olen] = 0;
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}
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free(newp);
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return dictp;
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}
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static CURLcode dict_do(struct connectdata *conn, bool *done)
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{
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char *word;
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char *eword;
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char *ppath;
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char *database = NULL;
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char *strategy = NULL;
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char *nthdef = NULL; /* This is not part of the protocol, but required
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by RFC 2229 */
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CURLcode result = CURLE_OK;
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struct Curl_easy *data = conn->data;
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curl_socket_t sockfd = conn->sock[FIRSTSOCKET];
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char *path = data->state.up.path;
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*done = TRUE; /* unconditionally */
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if(conn->bits.user_passwd) {
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/* AUTH is missing */
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}
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if(strncasecompare(path, DICT_MATCH, sizeof(DICT_MATCH)-1) ||
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strncasecompare(path, DICT_MATCH2, sizeof(DICT_MATCH2)-1) ||
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strncasecompare(path, DICT_MATCH3, sizeof(DICT_MATCH3)-1)) {
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word = strchr(path, ':');
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if(word) {
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word++;
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database = strchr(word, ':');
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if(database) {
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*database++ = (char)0;
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strategy = strchr(database, ':');
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if(strategy) {
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*strategy++ = (char)0;
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nthdef = strchr(strategy, ':');
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if(nthdef) {
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*nthdef = (char)0;
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}
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}
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}
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}
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if((word == NULL) || (*word == (char)0)) {
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infof(data, "lookup word is missing\n");
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word = (char *)"default";
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}
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if((database == NULL) || (*database == (char)0)) {
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database = (char *)"!";
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}
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if((strategy == NULL) || (*strategy == (char)0)) {
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strategy = (char *)".";
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}
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eword = unescape_word(data, word);
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if(!eword)
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return CURLE_OUT_OF_MEMORY;
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result = Curl_sendf(sockfd, conn,
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"CLIENT " LIBCURL_NAME " " LIBCURL_VERSION "\r\n"
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"MATCH "
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"%s " /* database */
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"%s " /* strategy */
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"%s\r\n" /* word */
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"QUIT\r\n",
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database,
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strategy,
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eword
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);
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free(eword);
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if(result) {
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failf(data, "Failed sending DICT request");
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return result;
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}
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Curl_setup_transfer(data, FIRSTSOCKET, -1, FALSE, -1); /* no upload */
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}
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else if(strncasecompare(path, DICT_DEFINE, sizeof(DICT_DEFINE)-1) ||
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strncasecompare(path, DICT_DEFINE2, sizeof(DICT_DEFINE2)-1) ||
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strncasecompare(path, DICT_DEFINE3, sizeof(DICT_DEFINE3)-1)) {
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word = strchr(path, ':');
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if(word) {
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word++;
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database = strchr(word, ':');
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if(database) {
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*database++ = (char)0;
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nthdef = strchr(database, ':');
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if(nthdef) {
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*nthdef = (char)0;
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}
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}
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}
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if((word == NULL) || (*word == (char)0)) {
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infof(data, "lookup word is missing\n");
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word = (char *)"default";
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}
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if((database == NULL) || (*database == (char)0)) {
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database = (char *)"!";
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}
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eword = unescape_word(data, word);
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if(!eword)
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return CURLE_OUT_OF_MEMORY;
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result = Curl_sendf(sockfd, conn,
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"CLIENT " LIBCURL_NAME " " LIBCURL_VERSION "\r\n"
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"DEFINE "
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"%s " /* database */
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"%s\r\n" /* word */
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"QUIT\r\n",
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database,
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eword);
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free(eword);
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if(result) {
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failf(data, "Failed sending DICT request");
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return result;
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}
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Curl_setup_transfer(data, FIRSTSOCKET, -1, FALSE, -1);
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}
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else {
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ppath = strchr(path, '/');
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if(ppath) {
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int i;
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ppath++;
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for(i = 0; ppath[i]; i++) {
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if(ppath[i] == ':')
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ppath[i] = ' ';
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}
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result = Curl_sendf(sockfd, conn,
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"CLIENT " LIBCURL_NAME " " LIBCURL_VERSION "\r\n"
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"%s\r\n"
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"QUIT\r\n", ppath);
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if(result) {
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failf(data, "Failed sending DICT request");
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return result;
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}
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Curl_setup_transfer(data, FIRSTSOCKET, -1, FALSE, -1);
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}
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}
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return CURLE_OK;
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}
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#endif /*CURL_DISABLE_DICT*/
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