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1.1 misho 1: /***************************************************************************
2: * _ _ ____ _
3: * Project ___| | | | _ \| |
4: * / __| | | | |_) | |
5: * | (__| |_| | _ <| |___
6: * \___|\___/|_| \_\_____|
7: *
8: * Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
9: *
10: * This software is licensed as described in the file COPYING, which
11: * you should have received as part of this distribution. The terms
12: * are also available at https://curl.haxx.se/docs/copyright.html.
13: *
14: * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15: * copies of the Software, and permit persons to whom the Software is
16: * furnished to do so, under the terms of the COPYING file.
17: *
18: * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19: * KIND, either express or implied.
20: *
21: ***************************************************************************/
22:
23: #include "curl_setup.h"
24:
25: #ifndef CURL_DISABLE_DICT
26:
27: #ifdef HAVE_NETINET_IN_H
28: #include <netinet/in.h>
29: #endif
30: #ifdef HAVE_NETDB_H
31: #include <netdb.h>
32: #endif
33: #ifdef HAVE_ARPA_INET_H
34: #include <arpa/inet.h>
35: #endif
36: #ifdef HAVE_NET_IF_H
37: #include <net/if.h>
38: #endif
39: #ifdef HAVE_SYS_IOCTL_H
40: #include <sys/ioctl.h>
41: #endif
42:
43: #ifdef HAVE_SYS_PARAM_H
44: #include <sys/param.h>
45: #endif
46:
47: #ifdef HAVE_SYS_SELECT_H
48: #include <sys/select.h>
49: #elif defined(HAVE_UNISTD_H)
50: #include <unistd.h>
51: #endif
52:
53: #include "urldata.h"
54: #include <curl/curl.h>
55: #include "transfer.h"
56: #include "sendf.h"
57: #include "escape.h"
58: #include "progress.h"
59: #include "dict.h"
60: #include "strcase.h"
61: #include "curl_memory.h"
62: /* The last #include file should be: */
63: #include "memdebug.h"
64:
65: /*
66: * Forward declarations.
67: */
68:
69: static CURLcode dict_do(struct connectdata *conn, bool *done);
70:
71: /*
72: * DICT protocol handler.
73: */
74:
75: const struct Curl_handler Curl_handler_dict = {
76: "DICT", /* scheme */
77: ZERO_NULL, /* setup_connection */
78: dict_do, /* do_it */
79: ZERO_NULL, /* done */
80: ZERO_NULL, /* do_more */
81: ZERO_NULL, /* connect_it */
82: ZERO_NULL, /* connecting */
83: ZERO_NULL, /* doing */
84: ZERO_NULL, /* proto_getsock */
85: ZERO_NULL, /* doing_getsock */
86: ZERO_NULL, /* domore_getsock */
87: ZERO_NULL, /* perform_getsock */
88: ZERO_NULL, /* disconnect */
89: ZERO_NULL, /* readwrite */
90: ZERO_NULL, /* connection_check */
91: PORT_DICT, /* defport */
92: CURLPROTO_DICT, /* protocol */
93: PROTOPT_NONE | PROTOPT_NOURLQUERY /* flags */
94: };
95:
96: static char *unescape_word(struct Curl_easy *data, const char *inputbuff)
97: {
98: char *newp = NULL;
99: char *dictp;
100: size_t len;
101:
102: CURLcode result = Curl_urldecode(data, inputbuff, 0, &newp, &len, FALSE);
103: if(!newp || result)
104: return NULL;
105:
106: dictp = malloc(len*2 + 1); /* add one for terminating zero */
107: if(dictp) {
108: char *ptr;
109: char ch;
110: int olen = 0;
111: /* According to RFC2229 section 2.2, these letters need to be escaped with
112: \[letter] */
113: for(ptr = newp;
114: (ch = *ptr) != 0;
115: ptr++) {
116: if((ch <= 32) || (ch == 127) ||
117: (ch == '\'') || (ch == '\"') || (ch == '\\')) {
118: dictp[olen++] = '\\';
119: }
120: dictp[olen++] = ch;
121: }
122: dictp[olen] = 0;
123: }
124: free(newp);
125: return dictp;
126: }
127:
128: static CURLcode dict_do(struct connectdata *conn, bool *done)
129: {
130: char *word;
131: char *eword;
132: char *ppath;
133: char *database = NULL;
134: char *strategy = NULL;
135: char *nthdef = NULL; /* This is not part of the protocol, but required
136: by RFC 2229 */
137: CURLcode result = CURLE_OK;
138: struct Curl_easy *data = conn->data;
139: curl_socket_t sockfd = conn->sock[FIRSTSOCKET];
140:
141: char *path = data->state.up.path;
142:
143: *done = TRUE; /* unconditionally */
144:
145: if(conn->bits.user_passwd) {
146: /* AUTH is missing */
147: }
148:
149: if(strncasecompare(path, DICT_MATCH, sizeof(DICT_MATCH)-1) ||
150: strncasecompare(path, DICT_MATCH2, sizeof(DICT_MATCH2)-1) ||
151: strncasecompare(path, DICT_MATCH3, sizeof(DICT_MATCH3)-1)) {
152:
153: word = strchr(path, ':');
154: if(word) {
155: word++;
156: database = strchr(word, ':');
157: if(database) {
158: *database++ = (char)0;
159: strategy = strchr(database, ':');
160: if(strategy) {
161: *strategy++ = (char)0;
162: nthdef = strchr(strategy, ':');
163: if(nthdef) {
164: *nthdef = (char)0;
165: }
166: }
167: }
168: }
169:
170: if((word == NULL) || (*word == (char)0)) {
171: infof(data, "lookup word is missing\n");
172: word = (char *)"default";
173: }
174: if((database == NULL) || (*database == (char)0)) {
175: database = (char *)"!";
176: }
177: if((strategy == NULL) || (*strategy == (char)0)) {
178: strategy = (char *)".";
179: }
180:
181: eword = unescape_word(data, word);
182: if(!eword)
183: return CURLE_OUT_OF_MEMORY;
184:
185: result = Curl_sendf(sockfd, conn,
186: "CLIENT " LIBCURL_NAME " " LIBCURL_VERSION "\r\n"
187: "MATCH "
188: "%s " /* database */
189: "%s " /* strategy */
190: "%s\r\n" /* word */
191: "QUIT\r\n",
192:
193: database,
194: strategy,
195: eword
196: );
197:
198: free(eword);
199:
200: if(result) {
201: failf(data, "Failed sending DICT request");
202: return result;
203: }
204: Curl_setup_transfer(data, FIRSTSOCKET, -1, FALSE, -1); /* no upload */
205: }
206: else if(strncasecompare(path, DICT_DEFINE, sizeof(DICT_DEFINE)-1) ||
207: strncasecompare(path, DICT_DEFINE2, sizeof(DICT_DEFINE2)-1) ||
208: strncasecompare(path, DICT_DEFINE3, sizeof(DICT_DEFINE3)-1)) {
209:
210: word = strchr(path, ':');
211: if(word) {
212: word++;
213: database = strchr(word, ':');
214: if(database) {
215: *database++ = (char)0;
216: nthdef = strchr(database, ':');
217: if(nthdef) {
218: *nthdef = (char)0;
219: }
220: }
221: }
222:
223: if((word == NULL) || (*word == (char)0)) {
224: infof(data, "lookup word is missing\n");
225: word = (char *)"default";
226: }
227: if((database == NULL) || (*database == (char)0)) {
228: database = (char *)"!";
229: }
230:
231: eword = unescape_word(data, word);
232: if(!eword)
233: return CURLE_OUT_OF_MEMORY;
234:
235: result = Curl_sendf(sockfd, conn,
236: "CLIENT " LIBCURL_NAME " " LIBCURL_VERSION "\r\n"
237: "DEFINE "
238: "%s " /* database */
239: "%s\r\n" /* word */
240: "QUIT\r\n",
241: database,
242: eword);
243:
244: free(eword);
245:
246: if(result) {
247: failf(data, "Failed sending DICT request");
248: return result;
249: }
250: Curl_setup_transfer(data, FIRSTSOCKET, -1, FALSE, -1);
251: }
252: else {
253:
254: ppath = strchr(path, '/');
255: if(ppath) {
256: int i;
257:
258: ppath++;
259: for(i = 0; ppath[i]; i++) {
260: if(ppath[i] == ':')
261: ppath[i] = ' ';
262: }
263: result = Curl_sendf(sockfd, conn,
264: "CLIENT " LIBCURL_NAME " " LIBCURL_VERSION "\r\n"
265: "%s\r\n"
266: "QUIT\r\n", ppath);
267: if(result) {
268: failf(data, "Failed sending DICT request");
269: return result;
270: }
271:
272: Curl_setup_transfer(data, FIRSTSOCKET, -1, FALSE, -1);
273: }
274: }
275:
276: return CURLE_OK;
277: }
278: #endif /*CURL_DISABLE_DICT*/