curl/lib/dict.c

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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2012, 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
* you should have received as part of this distribution. The terms
* are also available at http://curl.haxx.se/docs/copyright.html.
*
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* 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
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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
* KIND, either express or implied.
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*
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***************************************************************************/
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build: fix circular header inclusion with other packages This commit renames lib/setup.h to lib/curl_setup.h and renames lib/setup_once.h to lib/curl_setup_once.h. Removes the need and usage of a header inclusion guard foreign to libcurl. [1] Removes the need and presence of an alarming notice we carried in old setup_once.h [2] ---------------------------------------- 1 - lib/setup_once.h used __SETUP_ONCE_H macro as header inclusion guard up to commit ec691ca3 which changed this to HEADER_CURL_SETUP_ONCE_H, this single inclusion guard is enough to ensure that inclusion of lib/setup_once.h done from lib/setup.h is only done once. Additionally lib/setup.h has always used __SETUP_ONCE_H macro to protect inclusion of setup_once.h even after commit ec691ca3, this was to avoid a circular header inclusion triggered when building a c-ares enabled version with c-ares sources available which also has a setup_once.h header. Commit ec691ca3 exposes the real nature of __SETUP_ONCE_H usage in lib/setup.h, it is a header inclusion guard foreign to libcurl belonging to c-ares's setup_once.h The renaming this commit does, fixes the circular header inclusion, and as such removes the need and usage of a header inclusion guard foreign to libcurl. Macro __SETUP_ONCE_H no longer used in libcurl. 2 - Due to the circular interdependency of old lib/setup_once.h and the c-ares setup_once.h header, old file lib/setup_once.h has carried back from 2006 up to now days an alarming and prominent notice about the need of keeping libcurl's and c-ares's setup_once.h in sync. Given that this commit fixes the circular interdependency, the need and presence of mentioned notice is removed. All mentioned interdependencies come back from now old days when the c-ares project lived inside a curl subdirectory. This commit removes last traces of such fact.
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#include "curl_setup.h"
#ifndef CURL_DISABLE_DICT
#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
#endif
#ifdef HAVE_NETDB_H
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#include <netdb.h>
#endif
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#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
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#include <sys/ioctl.h>
#endif
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#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#include "urldata.h"
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#include <curl/curl.h>
#include "transfer.h"
#include "sendf.h"
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#include "progress.h"
#include "strequal.h"
#include "dict.h"
#include "rawstr.h"
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#define _MPRINTF_REPLACE /* use our functions only */
#include <curl/mprintf.h>
#include "curl_memory.h"
/* The last #include file should be: */
#include "memdebug.h"
/*
* Forward declarations.
*/
static CURLcode dict_do(struct connectdata *conn, bool *done);
/*
* DICT protocol handler.
*/
const struct Curl_handler Curl_handler_dict = {
"DICT", /* scheme */
ZERO_NULL, /* setup_connection */
dict_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, /* domore_getsock */
ZERO_NULL, /* perform_getsock */
ZERO_NULL, /* disconnect */
ZERO_NULL, /* readwrite */
PORT_DICT, /* defport */
CURLPROTO_DICT, /* protocol */
PROTOPT_NONE | PROTOPT_NOURLQUERY /* flags */
};
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static char *unescape_word(struct SessionHandle *data, const char *inputbuff)
{
char *newp;
char *dictp;
char *ptr;
int len;
char byte;
int olen=0;
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newp = curl_easy_unescape(data, inputbuff, 0, &len);
if(!newp)
return NULL;
dictp = malloc(((size_t)len)*2 + 1); /* add one for terminating zero */
if(dictp) {
/* According to RFC2229 section 2.2, these letters need to be escaped with
\[letter] */
for(ptr = newp;
(byte = *ptr) != 0;
ptr++) {
if((byte <= 32) || (byte == 127) ||
(byte == '\'') || (byte == '\"') || (byte == '\\')) {
dictp[olen++] = '\\';
}
dictp[olen++] = byte;
}
dictp[olen]=0;
free(newp);
}
return dictp;
}
static CURLcode dict_do(struct connectdata *conn, bool *done)
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{
char *word;
char *eword;
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char *ppath;
char *database = NULL;
char *strategy = NULL;
char *nthdef = NULL; /* This is not part of the protocol, but required
by RFC 2229 */
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CURLcode result=CURLE_OK;
struct SessionHandle *data=conn->data;
curl_socket_t sockfd = conn->sock[FIRSTSOCKET];
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char *path = data->state.path;
curl_off_t *bytecount = &data->req.bytecount;
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*done = TRUE; /* unconditionally */
if(conn->bits.user_passwd) {
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/* AUTH is missing */
}
if(Curl_raw_nequal(path, DICT_MATCH, sizeof(DICT_MATCH)-1) ||
Curl_raw_nequal(path, DICT_MATCH2, sizeof(DICT_MATCH2)-1) ||
Curl_raw_nequal(path, DICT_MATCH3, sizeof(DICT_MATCH3)-1)) {
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word = strchr(path, ':');
if(word) {
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word++;
database = strchr(word, ':');
if(database) {
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*database++ = (char)0;
strategy = strchr(database, ':');
if(strategy) {
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*strategy++ = (char)0;
nthdef = strchr(strategy, ':');
if(nthdef) {
*nthdef = (char)0;
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}
}
}
}
if((word == NULL) || (*word == (char)0)) {
infof(data, "lookup word is missing\n");
word=(char *)"default";
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}
if((database == NULL) || (*database == (char)0)) {
database = (char *)"!";
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}
if((strategy == NULL) || (*strategy == (char)0)) {
strategy = (char *)".";
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}
eword = unescape_word(data, word);
if(!eword)
return CURLE_OUT_OF_MEMORY;
result = Curl_sendf(sockfd, conn,
"CLIENT " LIBCURL_NAME " " LIBCURL_VERSION "\r\n"
"MATCH "
"%s " /* database */
"%s " /* strategy */
"%s\r\n" /* word */
"QUIT\r\n",
database,
strategy,
eword
);
free(eword);
if(result) {
failf(data, "Failed sending DICT request");
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return result;
}
Curl_setup_transfer(conn, FIRSTSOCKET, -1, FALSE, bytecount,
-1, NULL); /* no upload */
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}
else if(Curl_raw_nequal(path, DICT_DEFINE, sizeof(DICT_DEFINE)-1) ||
Curl_raw_nequal(path, DICT_DEFINE2, sizeof(DICT_DEFINE2)-1) ||
Curl_raw_nequal(path, DICT_DEFINE3, sizeof(DICT_DEFINE3)-1)) {
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word = strchr(path, ':');
if(word) {
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word++;
database = strchr(word, ':');
if(database) {
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*database++ = (char)0;
nthdef = strchr(database, ':');
if(nthdef) {
*nthdef = (char)0;
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}
}
}
if((word == NULL) || (*word == (char)0)) {
infof(data, "lookup word is missing\n");
word=(char *)"default";
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}
if((database == NULL) || (*database == (char)0)) {
database = (char *)"!";
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}
eword = unescape_word(data, word);
if(!eword)
return CURLE_OUT_OF_MEMORY;
result = Curl_sendf(sockfd, conn,
"CLIENT " LIBCURL_NAME " " LIBCURL_VERSION "\r\n"
"DEFINE "
"%s " /* database */
"%s\r\n" /* word */
"QUIT\r\n",
database,
eword);
free(eword);
if(result) {
failf(data, "Failed sending DICT request");
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return result;
}
Curl_setup_transfer(conn, FIRSTSOCKET, -1, FALSE, bytecount,
-1, NULL); /* no upload */
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}
else {
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ppath = strchr(path, '/');
if(ppath) {
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int i;
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ppath++;
for(i = 0; ppath[i]; i++) {
if(ppath[i] == ':')
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ppath[i] = ' ';
}
result = Curl_sendf(sockfd, conn,
"CLIENT " LIBCURL_NAME " " LIBCURL_VERSION "\r\n"
"%s\r\n"
"QUIT\r\n", ppath);
if(result) {
failf(data, "Failed sending DICT request");
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return result;
}
Curl_setup_transfer(conn, FIRSTSOCKET, -1, FALSE, bytecount, -1, NULL);
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}
}
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return CURLE_OK;
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}
#endif /*CURL_DISABLE_DICT*/