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/*
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* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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#include <stdio.h>
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#include <assert.h>
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#include <sys/stat.h>
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#ifdef DEBUG_ARGFILE
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#ifndef NO_JNI
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#define NO_JNI
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#endif
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#define JLI_ReportMessage(p1, p2) printf((p1), (p2))
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#else
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#include "java.h"
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#endif
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#include "jli_util.h"
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#include "emessages.h"
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#define MAX_ARGF_SIZE 0x7fffffffL
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static char* clone_substring(const char *begin, size_t len) {
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char *rv = (char *) JLI_MemAlloc(len + 1);
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memcpy(rv, begin, len);
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rv[len] = '\0';
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return rv;
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}
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enum STATE {
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FIND_NEXT,
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IN_COMMENT,
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IN_QUOTE,
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IN_ESCAPE,
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SKIP_LEAD_WS,
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IN_TOKEN
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};
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typedef struct {
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enum STATE state;
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const char* cptr;
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const char* eob;
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char quote_char;
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JLI_List parts;
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} __ctx_args;
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#define NOT_FOUND -1
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static int firstAppArgIndex = NOT_FOUND;
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static jboolean expectingNoDashArg = JNI_FALSE;
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static size_t argsCount = 0;
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static jboolean stopExpansion = JNI_FALSE;
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void JLI_InitArgProcessing(jboolean isJava, jboolean disableArgFile) {
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// No expansion for relaunch
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if (argsCount != 0) {
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stopExpansion = JNI_TRUE;
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argsCount = 0;
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} else {
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stopExpansion = disableArgFile;
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}
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expectingNoDashArg = JNI_FALSE;
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// for tools, this value remains 0 all the time.
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firstAppArgIndex = isJava ? NOT_FOUND : 0;
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}
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int JLI_GetAppArgIndex() {
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// Will be 0 for tools
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return firstAppArgIndex;
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}
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static void checkArg(const char *arg) {
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size_t idx = 0;
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argsCount++;
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if (argsCount == 1) {
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// ignore first argument, the application name
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return;
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}
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// All arguments arrive here must be a launcher argument,
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// ie. by now, all argfile expansions must have been performed.
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if (*arg++ == '-') {
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expectingNoDashArg = JNI_FALSE;
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if (JLI_StrCmp(arg, "cp") == 0 ||
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JLI_StrCmp(arg, "classpath") == 0 ||
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JLI_StrCmp(arg, "addmods") == 0 ||
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JLI_StrCmp(arg, "limitmods") == 0 ||
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JLI_StrCmp(arg, "mp") == 0 ||
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JLI_StrCmp(arg, "modulepath") == 0 ||
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JLI_StrCmp(arg, "upgrademodulepath") == 0) {
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expectingNoDashArg = JNI_TRUE;
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} else if (JLI_StrCmp(arg, "jar") == 0 ||
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JLI_StrCmp(arg, "m") == 0) {
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// This is tricky, we do expect NoDashArg
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// But that is considered main class to stop expansion
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expectingNoDashArg = JNI_FALSE;
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// We can not just update the idx here because if -jar @file
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// still need expansion of @file to get the argument for -jar
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} else if (JLI_StrCmp(arg, "Xdisable-@files") == 0) {
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stopExpansion = JNI_TRUE;
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}
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} else {
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if (!expectingNoDashArg) {
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// this is main class, argsCount is index to next arg
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idx = argsCount;
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}
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expectingNoDashArg = JNI_FALSE;
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}
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// only update on java mode and not yet found main class
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if (firstAppArgIndex == -1 && idx != 0) {
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firstAppArgIndex = (int) idx;
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}
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}
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/*
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[\n\r] +------------+ +------------+ [\n\r]
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+---------+ IN_COMMENT +<------+ | IN_ESCAPE +---------+
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| +------------+ | +------------+ |
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| [#] ^ |[#] ^ | |
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| +----------+ | [\\]| |[^\n\r] |
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v | | | v |
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+------------+ [^ \t\n\r\f] +------------+['"]> +------------+ |
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| FIND_NEXT +-------------->+ IN_TOKEN +-----------+ IN_QUOTE + |
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+------------+ +------------+ <[quote]+------------+ |
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| ^ | | ^ ^ |
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| | [ \t\n\r\f]| [\n\r]| | |[^ \t\n\r\f]v
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| +--------------------------+-----------------------+ | +--------------+
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| ['"] | | SKIP_LEAD_WS |
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+---------------------------------------------------------+ +--------------+
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*/
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static char* nextToken(__ctx_args *pctx) {
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const char* nextc = pctx->cptr;
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const char* const eob = pctx->eob;
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const char* anchor = nextc;
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char *token;
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for (; nextc < eob; nextc++) {
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register char ch = *nextc;
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// Skip white space characters
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if (pctx->state == FIND_NEXT || pctx->state == SKIP_LEAD_WS) {
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while (ch == ' ' || ch == '\n' || ch == '\r' || ch == '\t' || ch == '\f') {
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nextc++;
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if (nextc >= eob) {
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return NULL;
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}
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ch = *nextc;
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}
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pctx->state = (pctx->state == FIND_NEXT) ? IN_TOKEN : IN_QUOTE;
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anchor = nextc;
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// Deal with escape sequences
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} else if (pctx->state == IN_ESCAPE) {
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// concatenation directive
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if (ch == '\n' || ch == '\r') {
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pctx->state = SKIP_LEAD_WS;
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} else {
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// escaped character
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char* escaped = (char*) JLI_MemAlloc(2 * sizeof(char));
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escaped[1] = '\0';
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switch (ch) {
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case 'n':
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escaped[0] = '\n';
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break;
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case 'r':
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escaped[0] = '\r';
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break;
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case 't':
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escaped[0] = '\t';
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break;
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case 'f':
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escaped[0] = '\f';
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break;
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default:
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escaped[0] = ch;
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break;
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}
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JLI_List_add(pctx->parts, escaped);
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pctx->state = IN_QUOTE;
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}
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// anchor to next character
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anchor = nextc + 1;
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continue;
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// ignore comment to EOL
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} else if (pctx->state == IN_COMMENT) {
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while (ch != '\n' && ch != '\r') {
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nextc++;
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if (nextc > eob) {
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return NULL;
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}
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ch = *nextc;
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}
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pctx->state = FIND_NEXT;
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continue;
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}
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assert(pctx->state != IN_ESCAPE);
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assert(pctx->state != FIND_NEXT);
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assert(pctx->state != SKIP_LEAD_WS);
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assert(pctx->state != IN_COMMENT);
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switch(ch) {
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case ' ':
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case '\t':
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case '\f':
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if (pctx->state == IN_QUOTE) {
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continue;
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}
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// fall through
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case '\n':
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case '\r':
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if (pctx->parts->size == 0) {
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token = clone_substring(anchor, nextc - anchor);
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} else {
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JLI_List_addSubstring(pctx->parts, anchor, nextc - anchor);
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token = JLI_List_combine(pctx->parts);
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JLI_List_free(pctx->parts);
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pctx->parts = JLI_List_new(4);
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}
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pctx->cptr = nextc + 1;
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pctx->state = FIND_NEXT;
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return token;
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case '#':
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if (pctx->state == IN_QUOTE) {
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continue;
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}
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pctx->state = IN_COMMENT;
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break;
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case '\\':
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if (pctx->state != IN_QUOTE) {
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continue;
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}
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JLI_List_addSubstring(pctx->parts, anchor, nextc - anchor);
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pctx->state = IN_ESCAPE;
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break;
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case '\'':
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case '"':
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if (pctx->state == IN_QUOTE && pctx->quote_char != ch) {
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// not matching quote
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continue;
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}
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// partial before quote
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if (anchor != nextc) {
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JLI_List_addSubstring(pctx->parts, anchor, nextc - anchor);
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}
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// anchor after quote character
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anchor = nextc + 1;
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if (pctx->state == IN_TOKEN) {
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pctx->quote_char = ch;
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pctx->state = IN_QUOTE;
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} else {
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pctx->state = IN_TOKEN;
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}
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break;
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default:
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break;
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}
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}
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assert(nextc == eob);
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if (anchor != nextc) {
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// not yet return until end of stream, we have part of a token.
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JLI_List_addSubstring(pctx->parts, anchor, nextc - anchor);
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}
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return NULL;
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}
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static JLI_List readArgFile(FILE *file) {
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char buf[4096];
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JLI_List rv;
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__ctx_args ctx;
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size_t size;
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char *token;
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ctx.state = FIND_NEXT;
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ctx.parts = JLI_List_new(4);
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/* arbitrarily pick 8, seems to be a reasonable number of arguments */
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rv = JLI_List_new(8);
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while (!feof(file)) {
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size = fread(buf, sizeof(char), sizeof(buf), file);
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if (ferror(file)) {
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JLI_List_free(rv);
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return NULL;
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}
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/* nextc is next character to read from the buffer
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* eob is the end of input
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* token is the copied token value, NULL if no a complete token
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*/
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ctx.cptr = buf;
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ctx.eob = buf + size;
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token = nextToken(&ctx);
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while (token != NULL) {
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checkArg(token);
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JLI_List_add(rv, token);
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token = nextToken(&ctx);
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}
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}
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// remaining partial token
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if (ctx.state == IN_TOKEN || ctx.state == IN_QUOTE) {
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if (ctx.parts->size != 0) {
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JLI_List_add(rv, JLI_List_combine(ctx.parts));
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}
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}
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JLI_List_free(ctx.parts);
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return rv;
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}
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/*
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* if the arg represent a file, that is, prefix with a single '@',
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* return a list of arguments from the file.
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* otherwise, return NULL.
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*/
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static JLI_List expandArgFile(const char *arg) {
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FILE *fptr;
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struct stat st;
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JLI_List rv;
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/* failed to access the file */
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if (stat(arg, &st) != 0) {
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JLI_ReportMessage(CFG_ERROR6, arg);
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exit(1);
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}
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if (st.st_size > MAX_ARGF_SIZE) {
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JLI_ReportMessage(CFG_ERROR10, MAX_ARGF_SIZE);
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exit(1);
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}
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fptr = fopen(arg, "r");
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/* arg file cannot be openned */
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if (fptr == NULL) {
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JLI_ReportMessage(CFG_ERROR6, arg);
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exit(1);
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361 |
}
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rv = readArgFile(fptr);
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fclose(fptr);
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/* error occurred reading the file */
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367 |
if (rv == NULL) {
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368 |
JLI_ReportMessage(DLL_ERROR4, arg);
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369 |
exit(1);
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370 |
}
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371 |
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return rv;
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373 |
}
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374 |
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375 |
JLI_List JLI_PreprocessArg(const char *arg)
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376 |
{
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377 |
JLI_List rv;
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378 |
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379 |
if (firstAppArgIndex > 0) {
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380 |
// In user application arg, no more work.
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381 |
return NULL;
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382 |
}
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383 |
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384 |
if (stopExpansion) {
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385 |
// still looking for user application arg
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386 |
checkArg(arg);
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387 |
return NULL;
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388 |
}
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389 |
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390 |
if (arg[0] != '@') {
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391 |
checkArg(arg);
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392 |
return NULL;
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393 |
}
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395 |
if (arg[1] == '\0') {
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// @ by itself is an argument
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checkArg(arg);
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return NULL;
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399 |
}
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401 |
arg++;
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402 |
if (arg[0] == '@') {
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403 |
// escaped @argument
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404 |
rv = JLI_List_new(1);
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405 |
checkArg(arg);
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406 |
JLI_List_add(rv, JLI_StringDup(arg));
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407 |
} else {
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408 |
rv = expandArgFile(arg);
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409 |
}
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410 |
return rv;
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|
411 |
}
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|
412 |
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|
413 |
#ifdef DEBUG_ARGFILE
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|
414 |
/*
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|
415 |
* Stand-alone sanity test, build with following command line
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|
416 |
* $ CC -DDEBUG_ARGFILE -DNO_JNI -g args.c jli_util.c
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|
417 |
*/
|
|
418 |
|
|
419 |
void fail(char *expected, char *actual, size_t idx) {
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|
420 |
printf("FAILED: Token[%lu] expected to be <%s>, got <%s>\n", idx, expected, actual);
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|
421 |
exit(1);
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|
422 |
}
|
|
423 |
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|
424 |
void test_case(char *case_data, char **tokens, size_t cnt_tokens) {
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|
425 |
size_t actual_cnt;
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|
426 |
char *token;
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|
427 |
__ctx_args ctx;
|
|
428 |
|
|
429 |
actual_cnt = 0;
|
|
430 |
|
|
431 |
ctx.state = FIND_NEXT;
|
|
432 |
ctx.parts = JLI_List_new(4);
|
|
433 |
ctx.cptr = case_data;
|
|
434 |
ctx.eob = case_data + strlen(case_data);
|
|
435 |
|
|
436 |
printf("Test case: <%s>, expected %lu tokens.\n", case_data, cnt_tokens);
|
|
437 |
|
|
438 |
for (token = nextToken(&ctx); token != NULL; token = nextToken(&ctx)) {
|
|
439 |
// should not have more tokens than expected
|
|
440 |
if (actual_cnt >= cnt_tokens) {
|
|
441 |
printf("FAILED: Extra token detected: <%s>\n", token);
|
|
442 |
exit(2);
|
|
443 |
}
|
|
444 |
if (JLI_StrCmp(token, tokens[actual_cnt]) != 0) {
|
|
445 |
fail(tokens[actual_cnt], token, actual_cnt);
|
|
446 |
}
|
|
447 |
actual_cnt++;
|
|
448 |
}
|
|
449 |
|
|
450 |
char* last = NULL;
|
|
451 |
if (ctx.parts->size != 0) {
|
|
452 |
last = JLI_List_combine(ctx.parts);
|
|
453 |
}
|
|
454 |
JLI_List_free(ctx.parts);
|
|
455 |
|
|
456 |
if (actual_cnt >= cnt_tokens) {
|
|
457 |
// same number of tokens, should have nothing left to parse
|
|
458 |
if (last != NULL) {
|
|
459 |
if (*last != '#') {
|
|
460 |
printf("Leftover detected: %s", last);
|
|
461 |
exit(2);
|
|
462 |
}
|
|
463 |
}
|
|
464 |
} else {
|
|
465 |
if (JLI_StrCmp(last, tokens[actual_cnt]) != 0) {
|
|
466 |
fail(tokens[actual_cnt], last, actual_cnt);
|
|
467 |
}
|
|
468 |
actual_cnt++;
|
|
469 |
}
|
|
470 |
if (actual_cnt != cnt_tokens) {
|
|
471 |
printf("FAILED: Number of tokens not match, expected %lu, got %lu\n",
|
|
472 |
cnt_tokens, actual_cnt);
|
|
473 |
exit(3);
|
|
474 |
}
|
|
475 |
|
|
476 |
printf("PASS\n");
|
|
477 |
}
|
|
478 |
|
|
479 |
#define DO_CASE(name) \
|
|
480 |
test_case(name[0], name + 1, sizeof(name)/sizeof(char*) - 1)
|
|
481 |
|
|
482 |
int main(int argc, char** argv) {
|
|
483 |
size_t i, j;
|
|
484 |
|
|
485 |
char* case1[] = { "-version -cp \"c:\\\\java libs\\\\one.jar\" \n",
|
|
486 |
"-version", "-cp", "c:\\java libs\\one.jar" };
|
|
487 |
DO_CASE(case1);
|
|
488 |
|
|
489 |
// note the open quote at the end
|
|
490 |
char* case2[] = { "com.foo.Panda \"Furious 5\"\fand\t'Shi Fu' \"escape\tprison",
|
|
491 |
"com.foo.Panda", "Furious 5", "and", "Shi Fu", "escape\tprison"};
|
|
492 |
DO_CASE(case2);
|
|
493 |
|
|
494 |
char* escaped_chars[] = { "escaped chars testing \"\\a\\b\\c\\f\\n\\r\\t\\v\\9\\6\\23\\82\\28\\377\\477\\278\\287\"",
|
|
495 |
"escaped", "chars", "testing", "abc\f\n\r\tv96238228377477278287"};
|
|
496 |
DO_CASE(escaped_chars);
|
|
497 |
|
|
498 |
char* mixed_quote[] = { "\"mix 'single quote' in double\" 'mix \"double quote\" in single' partial\"quote me\"this",
|
|
499 |
"mix 'single quote' in double", "mix \"double quote\" in single", "partialquote methis"};
|
|
500 |
DO_CASE(mixed_quote);
|
|
501 |
|
|
502 |
char* comments[] = { "line one #comment\n'line #2' #rest are comment\r\n#comment on line 3\nline 4 #comment to eof",
|
|
503 |
"line", "one", "line #2", "line", "4"};
|
|
504 |
DO_CASE(comments);
|
|
505 |
|
|
506 |
char* open_quote[] = { "This is an \"open quote \n across line\n\t, note for WS.",
|
|
507 |
"This", "is", "an", "open quote ", "across", "line", ",", "note", "for", "WS." };
|
|
508 |
DO_CASE(open_quote);
|
|
509 |
|
|
510 |
char* escape_in_open_quote[] = { "Try \"this \\\\\\\\ escape\\n double quote \\\" in open quote",
|
|
511 |
"Try", "this \\\\ escape\n double quote \" in open quote" };
|
|
512 |
DO_CASE(escape_in_open_quote);
|
|
513 |
|
|
514 |
char* quote[] = { "'-Dmy.quote.single'='Property in single quote. Here a double quote\" Add some slashes \\\\/'",
|
|
515 |
"-Dmy.quote.single=Property in single quote. Here a double quote\" Add some slashes \\/" };
|
|
516 |
DO_CASE(quote);
|
|
517 |
|
|
518 |
char* multi[] = { "\"Open quote to \n new \"line \\\n\r third\\\n\r\\\tand\ffourth\"",
|
|
519 |
"Open quote to ", "new", "line third\tand\ffourth" };
|
|
520 |
DO_CASE(multi);
|
|
521 |
|
|
522 |
char* escape_quote[] = { "c:\\\"partial quote\"\\lib",
|
|
523 |
"c:\\partial quote\\lib" };
|
|
524 |
DO_CASE(escape_quote);
|
|
525 |
|
|
526 |
if (argc > 1) {
|
|
527 |
for (i = 0; i < argc; i++) {
|
|
528 |
JLI_List tokens = JLI_PreprocessArg(argv[i]);
|
|
529 |
if (NULL != tokens) {
|
|
530 |
for (j = 0; j < tokens->size; j++) {
|
|
531 |
printf("Token[%lu]: <%s>\n", (unsigned long) j, tokens->elements[j]);
|
|
532 |
}
|
|
533 |
}
|
|
534 |
}
|
|
535 |
}
|
|
536 |
}
|
|
537 |
|
|
538 |
#endif // DEBUG_ARGFILE
|