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gecko-dev/netwerk/streamconv/converters/nsFTPDirListingConv.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Netscape Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s): Bradley Baetz <bbaetz@student.usyd.edu.au>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the NPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the NPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsFTPDirListingConv.h"
#include "nsMemory.h"
#include "plstr.h"
#include "prlog.h"
#include "nsIAtom.h"
#include "nsIServiceManager.h"
#include "nsIGenericFactory.h"
#include "nsXPIDLString.h"
#include "nsReadableUtils.h"
#include "nsCOMPtr.h"
#include "nsEscape.h"
#include "nsNetUtil.h"
#include "nsIStringStream.h"
#include "nsILocaleService.h"
#include "nsIComponentManager.h"
#include "nsDateTimeFormatCID.h"
#include "nsIStreamListener.h"
#include "nsCRT.h"
#include "nsMimeTypes.h"
#define IS_LWS(c) (PL_strchr(" \t\r\n",c) != 0)
#define IS_FTYPE(c) (PL_strchr("-dlbcsp",c) != 0)
#define IS_RPERM(c) (PL_strchr("r-",c) != 0)
#define IS_WPERM(c) (PL_strchr("w-",c) != 0)
#define IS_SPERM(c) (PL_strchr("sSx-",c) != 0)
#define IS_TPERM(c) (PL_strchr("tTx-",c) != 0)
static NS_DEFINE_CID(kLocaleServiceCID, NS_LOCALESERVICE_CID);
static NS_DEFINE_CID(kDateTimeCID, NS_DATETIMEFORMAT_CID);
#if defined(PR_LOGGING)
//
// Log module for FTP dir listing stream converter logging...
//
// To enable logging (see prlog.h for full details):
//
// set NSPR_LOG_MODULES=nsFTPDirListConv:5
// set NSPR_LOG_FILE=nspr.log
//
// this enables PR_LOG_DEBUG level information and places all output in
// the file nspr.log
//
PRLogModuleInfo* gFTPDirListConvLog = nsnull;
#endif /* PR_LOGGING */
// nsISupports implementation
NS_IMPL_THREADSAFE_ISUPPORTS3(nsFTPDirListingConv,
nsIStreamConverter,
nsIStreamListener,
nsIRequestObserver);
// Common code of Convert and AsyncConvertData function
static FTP_Server_Type
DetermineServerType (nsCString &fromMIMEString, const PRUnichar *aFromType)
{
fromMIMEString.AssignWithConversion(aFromType);
const char *from = fromMIMEString.get();
NS_ASSERTION(from, "nsCString/PRUnichar acceptance failed.");
from = PL_strstr(from, "/ftp-dir-");
if (!from) return ERROR_TYPE;
from += 9;
fromMIMEString = from;
if (-1 != fromMIMEString.Find("unix")) {
return UNIX;
} else if (-1 != fromMIMEString.Find("nt")) {
return NT;
} else if (-1 != fromMIMEString.Find("dcts")) {
return DCTS;
} else if (-1 != fromMIMEString.Find("ncsa")) {
return NCSA;
} else if (-1 != fromMIMEString.Find("peter_lewis")) {
return PETER_LEWIS;
} else if (-1 != fromMIMEString.Find("machten")) {
return MACHTEN;
} else if (-1 != fromMIMEString.Find("cms")) {
return CMS;
} else if (-1 != fromMIMEString.Find("tcpc")) {
return TCPC;
} else if (-1 != fromMIMEString.Find("os2")) {
return OS_2;
}
return GENERIC;
}
// nsIStreamConverter implementation
#define CONV_BUF_SIZE (4*1024)
NS_IMETHODIMP
nsFTPDirListingConv::Convert(nsIInputStream *aFromStream,
const PRUnichar *aFromType,
const PRUnichar *aToType,
nsISupports *aCtxt, nsIInputStream **_retval) {
nsresult rv;
// set our internal state to reflect the server type
nsCString fromMIMEString;
mServerType = DetermineServerType(fromMIMEString, aFromType);
if (mServerType == ERROR_TYPE) return NS_ERROR_FAILURE;
char buffer[CONV_BUF_SIZE];
int i = 0;
while (i < CONV_BUF_SIZE) {
buffer[i] = '\0';
i++;
}
CBufDescriptor desc(buffer, PR_TRUE, CONV_BUF_SIZE);
nsCAutoString aBuffer(desc);
nsCString convertedData;
NS_ASSERTION(aCtxt, "FTP dir conversion needs the context");
nsCOMPtr<nsIURI> uri(do_QueryInterface(aCtxt, &rv));
if (NS_FAILED(rv)) return rv;
rv = GetHeaders(convertedData, uri);
if (NS_FAILED(rv)) return rv;
// build up the body
while (1) {
PRUint32 amtRead = 0;
rv = aFromStream->Read(buffer+aBuffer.Length(),
CONV_BUF_SIZE-aBuffer.Length(), &amtRead);
if (NS_FAILED(rv)) return rv;
if (!amtRead) {
// EOF
break;
}
aBuffer = DigestBufferLines(buffer, convertedData);
}
// end body building
#ifndef DEBUG_valeski
PR_LOG(gFTPDirListConvLog, PR_LOG_DEBUG, ("::OnData() sending the following %d bytes...\n\n%s\n\n",
convertedData.Length(), convertedData.get()) );
#else
char *unescData = ToNewCString(convertedData);
nsUnescape(unescData);
printf("::OnData() sending the following %d bytes...\n\n%s\n\n", convertedData.Length(), unescData);
nsMemory::Free(unescData);
#endif // DEBUG_valeski
// send the converted data out.
return NS_NewCStringInputStream(_retval, convertedData);
}
// Stream converter service calls this to initialize the actual stream converter (us).
NS_IMETHODIMP
nsFTPDirListingConv::AsyncConvertData(const PRUnichar *aFromType, const PRUnichar *aToType,
nsIStreamListener *aListener, nsISupports *aCtxt) {
NS_ASSERTION(aListener && aFromType && aToType, "null pointer passed into FTP dir listing converter");
nsresult rv;
// hook up our final listener. this guy gets the various On*() calls we want to throw
// at him.
mFinalListener = aListener;
NS_ADDREF(mFinalListener);
// set our internal state to reflect the server type
nsCString fromMIMEString;
mServerType = DetermineServerType(fromMIMEString, aFromType);
if (mServerType == ERROR_TYPE) return NS_ERROR_FAILURE;
// we need our own channel that represents the content-type of the
// converted data.
NS_ASSERTION(aCtxt, "FTP dir listing needs a context (the uri)");
nsIURI *uri;
rv = aCtxt->QueryInterface(NS_GET_IID(nsIURI), (void**)&uri);
if (NS_FAILED(rv)) return rv;
rv = NS_NewInputStreamChannel(&mPartChannel,
uri,
nsnull,
NS_LITERAL_CSTRING(APPLICATION_HTTP_INDEX_FORMAT),
NS_LITERAL_CSTRING(""),
-1); // XXX fix contentLength
NS_RELEASE(uri);
if (NS_FAILED(rv)) return rv;
PR_LOG(gFTPDirListConvLog, PR_LOG_DEBUG,
("nsFTPDirListingConv::AsyncConvertData() converting FROM raw %s, TO application/http-index-format\n", fromMIMEString.get()));
return NS_OK;
}
// nsIStreamListener implementation
NS_IMETHODIMP
nsFTPDirListingConv::OnDataAvailable(nsIRequest* request, nsISupports *ctxt,
nsIInputStream *inStr, PRUint32 sourceOffset, PRUint32 count) {
NS_ASSERTION(request, "FTP dir listing stream converter needs a request");
nsresult rv;
nsCOMPtr<nsIChannel> channel = do_QueryInterface(request, &rv);
if (NS_FAILED(rv)) return rv;
PRUint32 read, streamLen;
rv = inStr->Available(&streamLen);
if (NS_FAILED(rv)) return rv;
char *buffer = (char*)nsMemory::Alloc(streamLen + 1);
rv = inStr->Read(buffer, streamLen, &read);
if (NS_FAILED(rv)) return rv;
// the dir listings are ascii text, null terminate this sucker.
buffer[streamLen] = '\0';
PR_LOG(gFTPDirListConvLog, PR_LOG_DEBUG, ("nsFTPDirListingConv::OnData(request = %x, ctxt = %x, inStr = %x, sourceOffset = %d, count = %d)\n", request, ctxt, inStr, sourceOffset, count));
if (!mBuffer.IsEmpty()) {
// we have data left over from a previous OnDataAvailable() call.
// combine the buffers so we don't lose any data.
mBuffer.Append(buffer);
nsMemory::Free(buffer);
buffer = ToNewCString(mBuffer);
mBuffer.Truncate();
}
#ifndef DEBUG_valeski
PR_LOG(gFTPDirListConvLog, PR_LOG_DEBUG, ("::OnData() received the following %d bytes...\n\n%s\n\n", streamLen, buffer) );
#else
printf("::OnData() received the following %d bytes...\n\n%s\n\n", streamLen, buffer);
#endif // DEBUG_valeski
nsCString indexFormat;
if (!mSentHeading) {
// build up the 300: line
nsCOMPtr<nsIURI> uri;
rv = channel->GetURI(getter_AddRefs(uri));
if (NS_FAILED(rv)) return rv;
rv = GetHeaders(indexFormat, uri);
if (NS_FAILED(rv)) return rv;
mSentHeading = PR_TRUE;
}
char *line = buffer;
line = DigestBufferLines(line, indexFormat);
#ifndef DEBUG_valeski
PR_LOG(gFTPDirListConvLog, PR_LOG_DEBUG, ("::OnData() sending the following %d bytes...\n\n%s\n\n",
indexFormat.Length(), indexFormat.get()) );
#else
char *unescData = ToNewCString(indexFormat);
nsUnescape(unescData);
printf("::OnData() sending the following %d bytes...\n\n%s\n\n", indexFormat.Length(), unescData);
nsMemory::Free(unescData);
#endif // DEBUG_valeski
// if there's any data left over, buffer it.
if (line && *line) {
mBuffer.Append(line);
PR_LOG(gFTPDirListConvLog, PR_LOG_DEBUG, ("::OnData() buffering the following %d bytes...\n\n%s\n\n",
PL_strlen(line), line) );
}
nsMemory::Free(buffer);
// send the converted data out.
nsCOMPtr<nsIInputStream> inputData;
rv = NS_NewCStringInputStream(getter_AddRefs(inputData), indexFormat);
if (NS_FAILED(rv)) return rv;
rv = mFinalListener->OnDataAvailable(mPartChannel, ctxt, inputData, 0, indexFormat.Length());
if (NS_FAILED(rv)) return rv;
return NS_OK;
}
// nsIRequestObserver implementation
NS_IMETHODIMP
nsFTPDirListingConv::OnStartRequest(nsIRequest* request, nsISupports *ctxt) {
// we don't care about start. move along... but start masqeurading
// as the http-index channel now.
return mFinalListener->OnStartRequest(mPartChannel, ctxt);
}
NS_IMETHODIMP
nsFTPDirListingConv::OnStopRequest(nsIRequest* request, nsISupports *ctxt,
nsresult aStatus) {
// we don't care about stop. move along...
nsresult rv;
nsCOMPtr<nsIChannel> channel = do_QueryInterface(request, &rv);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsILoadGroup> loadgroup;
rv = channel->GetLoadGroup(getter_AddRefs(loadgroup));
if (NS_FAILED(rv)) return rv;
if (loadgroup)
(void)loadgroup->RemoveRequest(mPartChannel, nsnull, aStatus);
return mFinalListener->OnStopRequest(mPartChannel, ctxt, aStatus);
}
// nsFTPDirListingConv methods
nsFTPDirListingConv::nsFTPDirListingConv() {
NS_INIT_ISUPPORTS();
mFinalListener = nsnull;
mServerType = GENERIC;
mPartChannel = nsnull;
mSentHeading = PR_FALSE;
}
nsFTPDirListingConv::~nsFTPDirListingConv() {
NS_IF_RELEASE(mFinalListener);
NS_IF_RELEASE(mPartChannel);
}
nsresult
nsFTPDirListingConv::Init() {
#if defined(PR_LOGGING)
//
// Initialize the global PRLogModule for FTP Protocol logging
// if necessary...
//
if (nsnull == gFTPDirListConvLog) {
gFTPDirListConvLog = PR_NewLogModule("nsFTPDirListingConv");
}
#endif /* PR_LOGGING */
return NS_OK;
}
nsresult
nsFTPDirListingConv::GetHeaders(nsACString& headers,
nsIURI* uri)
{
nsresult rv = NS_OK;
// build up 300 line
headers.Append("300: ");
// Bug 111117 - don't print the password
nsCAutoString pw;
nsCAutoString spec;
uri->GetPassword(pw);
if (!pw.IsEmpty()) {
rv = uri->SetPassword(NS_LITERAL_CSTRING(""));
if (NS_FAILED(rv)) return rv;
rv = uri->GetAsciiSpec(spec);
if (NS_FAILED(rv)) return rv;
headers.Append(spec);
rv = uri->SetPassword(pw);
if (NS_FAILED(rv)) return rv;
} else {
rv = uri->GetAsciiSpec(spec);
if (NS_FAILED(rv)) return rv;
headers.Append(spec);
}
headers.Append(char(nsCRT::LF));
// END 300:
// build up the column heading; 200:
headers.Append("200: filename content-length last-modified file-type\n");
// END 200:
return rv;
}
PRInt8
nsFTPDirListingConv::MonthNumber(const char *month) {
NS_ASSERTION(month && month[1] && month[2], "bad month");
if (!month || !month[0] || !month[1] || !month[2])
return -1;
char c1 = month[1], c2 = month[2];
PRInt8 rv = -1;
//PR_LOG(gFTPDirListConvLog, PR_LOG_DEBUG, ("nsFTPDirListingConv::MonthNumber(month = %s) ", month) );
switch (*month) {
case 'f': case 'F':
rv = 1; break;
case 'm': case 'M':
// c1 == 'a' || c1 == 'A'
if (c2 == 'r' || c2 == 'R')
rv = 2;
else
// c2 == 'y' || c2 == 'Y'
rv = 4;
break;
case 'a': case 'A':
if (c1 == 'p' || c1 == 'P')
rv = 3;
else
// c1 == 'u' || c1 == 'U'
rv = 7;
break;
case 'j': case 'J':
if (c1 == 'u' || c1 == 'U') {
if (c2 == 'n' || c2 == 'N')
rv = 5;
else
// c2 == 'l' || c2 == 'L'
rv = 6;
} else {
// c1 == 'a' || c1 == 'A'
rv = 0;
}
break;
case 's': case 'S':
rv = 8; break;
case 'o': case 'O':
rv = 9; break;
case 'n': case 'N':
rv = 10; break;
case 'd': case 'D':
rv = 11; break;
default:
rv = -1;
}
//PR_LOG(gFTPDirListConvLog, PR_LOG_DEBUG, ("returning %d\n", rv) );
return rv;
}
// Return true if the string is of the form:
// "Sep 1 1990 " or
// "Sep 11 11:59 " or
// "Dec 12 1989 " or
// "FCv 23 1990 " ...
PRBool
nsFTPDirListingConv::IsLSDate(char *aCStr) {
/* must start with three alpha characters */
if (!nsCRT::IsAsciiAlpha(*aCStr++) || !nsCRT::IsAsciiAlpha(*aCStr++) || !nsCRT::IsAsciiAlpha(*aCStr++))
return PR_FALSE;
/* space */
if (*aCStr != ' ')
return PR_FALSE;
aCStr++;
/* space or digit */
if ((*aCStr != ' ') && !nsCRT::IsAsciiDigit(*aCStr))
return PR_FALSE;
aCStr++;
/* digit */
if (!nsCRT::IsAsciiDigit(*aCStr))
return PR_FALSE;
aCStr++;
/* space */
if (*aCStr != ' ')
return PR_FALSE;
aCStr++;
/* space or digit */
if ((*aCStr != ' ') && !nsCRT::IsAsciiDigit(*aCStr))
return PR_FALSE;
aCStr++;
/* digit */
if (!nsCRT::IsAsciiDigit(*aCStr))
return PR_FALSE;
aCStr++;
/* colon or digit */
if ((*aCStr != ':') && !nsCRT::IsAsciiDigit(*aCStr))
return PR_FALSE;
aCStr++;
/* digit */
if (!nsCRT::IsAsciiDigit(*aCStr))
return PR_FALSE;
aCStr++;
/* space or digit */
if ((*aCStr != ' ') && !nsCRT::IsAsciiDigit(*aCStr))
return PR_FALSE;
aCStr++;
/* space */
if (*aCStr != ' ')
return PR_FALSE;
aCStr++;
return PR_TRUE;
}
// Converts a date string from 'ls -l' to a PRTime number
// "Sep 1 1990 " or
// "Sep 11 11:59 " or
// "Dec 12 1989 " or
// "FCv 23 1990 " ...
// Returns 0 on error.
PRBool
nsFTPDirListingConv::ConvertUNIXDate(char *aCStr, PRExplodedTime& outDate) {
PRExplodedTime curTime;
InitPRExplodedTime(curTime);
char *bcol = aCStr; /* Column begin */
char *ecol; /* Column end */
// MONTH
char tmpChar = bcol[3];
bcol[3] = '\0';
if ((curTime.tm_month = MonthNumber(bcol)) < 0)
return PR_FALSE;
bcol[3] = tmpChar;
// DAY
ecol = &bcol[3];
while (*(++ecol) == ' ') ;
while (*(++ecol) != ' ') ;
*ecol = '\0';
bcol = ecol+1;
while (*(--ecol) != ' ') ;
PRInt32 error;
nsCAutoString day(ecol);
curTime.tm_mday = day.ToInteger(&error, 10);
// YEAR
if ((ecol = PL_strchr(bcol, ':')) == NULL) {
nsCAutoString intStr(bcol);
curTime.tm_year = intStr.ToInteger(&error, 10);
} else {
// TIME
/* If the time is given as hh:mm, then the file is less than 1 year
* old, but we might shift calandar year. This is avoided by checking
* if the date parsed is future or not.
*/
*ecol = '\0';
nsCAutoString intStr(++ecol);
curTime.tm_min = intStr.ToInteger(&error, 10); // Right side of ':'
intStr = bcol;
curTime.tm_hour = intStr.ToInteger(&error, 10); // Left side of ':'
PRExplodedTime nowETime;
PR_ExplodeTime(PR_Now(), PR_LocalTimeParameters, &nowETime);
curTime.tm_year = nowETime.tm_year;
PRBool thisCalendarYear = PR_FALSE;
if (nowETime.tm_month > curTime.tm_month) {
thisCalendarYear = PR_TRUE;
} else if (nowETime.tm_month == curTime.tm_month
&& nowETime.tm_mday > curTime.tm_mday) {
thisCalendarYear = PR_TRUE;
} else if (nowETime.tm_month == curTime.tm_month
&& nowETime.tm_mday == curTime.tm_mday
&& nowETime.tm_hour > curTime.tm_hour) {
thisCalendarYear = PR_TRUE;
} else if (nowETime.tm_month == curTime.tm_month
&& nowETime.tm_mday == curTime.tm_mday
&& nowETime.tm_hour == curTime.tm_hour
&& nowETime.tm_min >= curTime.tm_min) {
thisCalendarYear = PR_TRUE;
}
if (!thisCalendarYear) curTime.tm_year--;
}
// set the out param
outDate = curTime;
return PR_TRUE;
}
PRBool
nsFTPDirListingConv::ConvertDOSDate(char *aCStr, PRExplodedTime& outDate) {
PRExplodedTime curTime, nowTime;
PR_ExplodeTime(PR_Now(), PR_LocalTimeParameters, &nowTime);
PRInt16 currCentury = nowTime.tm_year / 100;
InitPRExplodedTime(curTime);
curTime.tm_month = ((aCStr[0]-'0')*10 + (aCStr[1]-'0')) - 1;
curTime.tm_mday = (((aCStr[3]-'0')*10) + aCStr[4]-'0');
curTime.tm_year = currCentury*100 + ((aCStr[6]-'0')*10) + aCStr[7]-'0';
// year is only 2-digit, so we've converted. If its in the future,
// it must have been last century
if (curTime.tm_year > nowTime.tm_year) {
curTime.tm_year -= 100;
}
curTime.tm_hour = (((aCStr[10]-'0')*10) + aCStr[11]-'0');
if (aCStr[15] == 'P')
curTime.tm_hour += 12;
curTime.tm_min = (((aCStr[13]-'0')*10) + aCStr[14]-'0');
outDate = curTime;
return PR_TRUE;
}
nsresult
nsFTPDirListingConv::ParseLSLine(char *aLine, indexEntry *aEntry) {
PRInt32 base=1;
PRInt32 size_num=0;
char save_char;
char *ptr, *escName;
// insure that we have enough data to parse here
// using 27 for a minimal LIST line
if (PL_strlen(aLine) <= 27) {
NS_WARNING("ls -l is incorrectly formatted");
aEntry->mName.Adopt(nsEscape(aLine, url_Path));
// initialize the time struct to 0
InitPRExplodedTime(aEntry->mMDTM);
return NS_OK;
}
for (ptr = &aLine[PL_strlen(aLine) - 1];
(ptr > aLine+13) && (!nsCRT::IsAsciiSpace(*ptr) || !IsLSDate(ptr-12)); ptr--)
; /* null body */
save_char = *ptr;
*ptr = '\0';
if (ptr > aLine+13) {
ConvertUNIXDate(ptr-12, aEntry->mMDTM);
} else {
// must be a dl listing
// unterminate the line
*ptr = save_char;
// find the first whitespace and terminate
for(ptr=aLine; *ptr != '\0'; ptr++)
if (nsCRT::IsAsciiSpace(*ptr)) {
*ptr = '\0';
break;
}
escName = nsEscape(aLine, url_Path);
aEntry->mName.Adopt(escName);
// initialize the time struct to 0 to be safe
InitPRExplodedTime(aEntry->mMDTM);
return NS_OK;
}
escName = nsEscape(ptr+1, url_Path);
aEntry->mName.Adopt(escName);
// parse size
if (ptr > aLine+15) {
ptr -= 14;
while (nsCRT::IsAsciiDigit(*ptr)) {
size_num += ((PRInt32) (*ptr - '0')) * base;
base *= 10;
ptr--;
}
aEntry->mContentLen = size_num;
}
return NS_OK;
}
void
nsFTPDirListingConv::InitPRExplodedTime(PRExplodedTime& aTime) {
aTime.tm_usec = 0;
aTime.tm_sec = 0;
aTime.tm_min = 0;
aTime.tm_hour = 0;
aTime.tm_mday = 0;
aTime.tm_month= 0;
aTime.tm_year = 0;
aTime.tm_wday = 0;
aTime.tm_yday = 0;
aTime.tm_params.tp_gmt_offset = 0;
aTime.tm_params.tp_dst_offset = 0;
}
/**
* Can this line possibly be a ls-l line?
* Ideally, one should parse the line into tokens, etc. but
* that's for later. At the moment, just test the line for
* length and examine the first token. An absolutely minimal
* line has the form
* -rwxrwxrwx 0 Dec 31 23:59 F
* which is 27 characters. If the line is at least 27 bytes
* long and the first token matches the regular expression
* [-dlbcps][r-][w-][sSx-][r-][w-][sSx-][r-][w-][tTx-]
* then accept the line *provided* there is another token on
* the line.
* As written, this function *assumes* leading whitespace has
* been removed. That's what the rest of the code assumes. It
* may not be a reasonable assumption.
* DigestBufferLines hints that the regular expression test should
* be done case insensitively. That would relax this test so it is
* *not* done. If definitive evidence exists of a server that does
* this, then it can be changed.
* This function uses a lot of macros for clarity. They probably
* should be improved.
*/
PRBool
nsFTPDirListingConv::ls_lCandidate(const char *lsLine) {
const char *cp;
if (PL_strlen(lsLine) < 27) return PR_FALSE;
if (!IS_FTYPE(lsLine[0])) return PR_FALSE;
// shorter tests first
if (!IS_RPERM(lsLine[1])) return PR_FALSE;
if (!IS_WPERM(lsLine[2])) return PR_FALSE;
if (!IS_RPERM(lsLine[4])) return PR_FALSE;
if (!IS_WPERM(lsLine[5])) return PR_FALSE;
if (!IS_RPERM(lsLine[7])) return PR_FALSE;
if (!IS_WPERM(lsLine[8])) return PR_FALSE;
if (!IS_SPERM(lsLine[3])) return PR_FALSE;
if (!IS_SPERM(lsLine[6])) return PR_FALSE;
for (cp = &lsLine[10]; *cp; ++cp)
if (!IS_LWS(*cp)) return PR_TRUE;
return PR_FALSE;
}
char *
nsFTPDirListingConv::DigestBufferLines(char *aBuffer, nsCString &aString) {
nsresult rv;
char *line = aBuffer;
char *eol;
PRBool cr = PR_FALSE;
// while we have new lines, parse 'em into application/http-index-format.
while ( line && (eol = PL_strchr(line, nsCRT::LF)) ) {
// yank any carriage returns too.
if (eol > line && *(eol-1) == nsCRT::CR) {
eol--;
*eol = '\0';
cr = PR_TRUE;
} else {
*eol = '\0';
cr = PR_FALSE;
}
indexEntry *thisEntry = nsnull;
NS_NEWXPCOM(thisEntry, indexEntry);
if (!thisEntry) return nsnull;
// XXX we need to handle comments in the raw stream.
// special case windows servers who masquerade as unix servers
if (NT == mServerType && !nsCRT::IsAsciiSpace(line[8]))
mServerType = UNIX;
// check for an eplf response
if (line[0] == '+')
mServerType = EPLF;
char *escName = nsnull;
switch (mServerType) {
case UNIX:
case PETER_LEWIS:
case MACHTEN:
{
// don't bother w/ these lines.
if (!PL_strncmp(line, "total ", 6)
|| !PL_strncmp(line, "ls: total", 9)
|| (PL_strstr(line, "Permission denied") != NULL)
|| (PL_strstr(line, "not available") != NULL)) {
NS_DELETEXPCOM(thisEntry);
if (cr)
line = eol+2;
else
line = eol+1;
continue;
}
PRInt32 len = PL_strlen(line);
// check first character of ls -l output
// For example: "dr-x--x--x" is what we're starting with.
// sanity check for dir permission bits
if ((line[0] == 'D' || line[0] == 'd') && ls_lCandidate(line)) {
/* it's a directory */
thisEntry->mType = Dir;
thisEntry->mSupressSize = PR_TRUE;
} else if ((line[0] == 'L' || line[0] == 'l') && ls_lCandidate(line)) {
/**
* Dir Links are not displayed properly
* we need a more robust implementation
*/
thisEntry->mType = Link;
thisEntry->mSupressSize = PR_TRUE;
/* strip off " -> pathname" */
PRInt32 i;
for (i = len - 1; (i > 3) && (!nsCRT::IsAsciiSpace(line[i])
|| (line[i-1] != '>')
|| (line[i-2] != '-')
|| (line[i-3] != ' ')); i--)
; /* null body */
if (i > 3) {
line[i-3] = '\0';
len = i - 3;
}
}
rv = ParseLSLine(line, thisEntry);
if ( NS_FAILED(rv) || (thisEntry->mName.Equals("..")) || (thisEntry->mName.Equals(".")) ) {
NS_DELETEXPCOM(thisEntry);
if (cr)
line = eol+2;
else
line = eol+1;
continue;
}
break; // END UNIX, PETER_LEWIS, MACHTEN
}
case NCSA:
case TCPC:
{
escName = nsEscape(line, url_Path);
thisEntry->mName.Adopt(escName);
if (thisEntry->mName.Last() == '/') {
thisEntry->mType = Dir;
thisEntry->mName.Truncate(thisEntry->mName.Length()-1);
}
break; // END NCSA, TCPC
}
case CMS:
{
escName = nsEscape(line, url_Path);
thisEntry->mName.Adopt(escName);
break; // END CMS
}
case NT:
{
// don't bother w/ these lines.
if (!PL_strncmp(line, "total ", 6)
|| !PL_strncmp(line, "ls: total", 9)
|| (PL_strstr(line, "Permission denied") != NULL)
|| (PL_strstr(line, "not available") != NULL)) {
NS_DELETEXPCOM(thisEntry);
if (cr)
line = eol+2;
else
line = eol+1;
continue;
}
char *date, *size_s, *name;
if (PL_strlen(line) > 37) {
date = line;
line[17] = '\0';
size_s = &line[18];
line[38] = '\0';
name = &line[39];
if (PL_strstr(size_s, "<DIR>")) {
thisEntry->mType = Dir;
} else {
nsCAutoString size(size_s);
size.StripWhitespace();
thisEntry->mContentLen = atol(size.get());
}
ConvertDOSDate(date, thisEntry->mMDTM);
escName = nsEscape(name, url_Path);
thisEntry->mName.Adopt(escName);
} else {
escName = nsEscape(line, url_Path);
thisEntry->mName.Adopt(escName);
}
break; // END NT
}
case EPLF:
{
int flagcwd = 0;
int when = 0;
int flagsize = 0;
unsigned long size = 0;
PRBool processing = PR_TRUE;
while (*line && processing)
switch (*line) {
case '\t':
{
if (flagcwd) {
thisEntry->mType = Dir;
thisEntry->mContentLen = 0;
} else {
thisEntry->mType = File;
thisEntry->mContentLen = size;
}
escName = nsEscape(line+1, url_Path);
thisEntry->mName.Adopt(escName);
thisEntry->mSupressSize = !flagsize;
// Mutiply what the last modification date to get usecs.
PRInt64 usecs = LL_Zero();
PRInt64 seconds = LL_Zero();
PRInt64 multiplier = LL_Zero();
LL_I2L(seconds, when);
LL_I2L(multiplier, PR_USEC_PER_SEC);
LL_MUL(usecs, seconds, multiplier);
PR_ExplodeTime(usecs, PR_LocalTimeParameters, &thisEntry->mMDTM);
processing = PR_FALSE;
}
break;
case 's':
flagsize = 1;
size = 0;
while (*++line && nsCRT::IsAsciiDigit(*line))
size = size * 10 + (*line - '0');
break;
case 'm':
while (*++line && nsCRT::IsAsciiDigit(*line))
when = when * 10 + (*line - '0');
break;
case '/':
flagcwd = 1;
default:
while (*line) if (*line++ == ',') break;
}
break; //END EPLF
}
case OS_2:
{
if (!PL_strncmp(line, "total ", 6)
|| (PL_strstr(line, "not authorized") != NULL)
|| (PL_strstr(line, "Path not found") != NULL)
|| (PL_strstr(line, "No Files") != NULL)) {
NS_DELETEXPCOM(thisEntry);
if (cr)
line = eol+2;
else
line = eol+1;
continue;
}
char *name;
nsCAutoString str;
if (PL_strstr(line, "DIR")) {
thisEntry->mType = Dir;
thisEntry->mSupressSize = PR_TRUE;
}
else
thisEntry->mType = File;
PRInt32 error;
line[18] = '\0';
str = line;
str.StripWhitespace();
thisEntry->mContentLen = str.ToInteger(&error, 10);
InitPRExplodedTime(thisEntry->mMDTM);
line[37] = '\0';
str = &line[35];
thisEntry->mMDTM.tm_month = str.ToInteger(&error, 10) - 1;
line[40] = '\0';
str = &line[38];
thisEntry->mMDTM.tm_mday = str.ToInteger(&error, 10);
line[43] = '\0';
str = &line[41];
thisEntry->mMDTM.tm_year = str.ToInteger(&error, 10);
line[48] = '\0';
str = &line[46];
thisEntry->mMDTM.tm_hour = str.ToInteger(&error, 10);
line[51] = '\0';
str = &line[49];
thisEntry->mMDTM.tm_min = str.ToInteger(&error, 10);
name = &line[53];
escName = nsEscape(name, url_Path);
thisEntry->mName.Adopt(escName);
break;
}
default:
{
escName = nsEscape(line, url_Path);
thisEntry->mName.Adopt(escName);
break; // END default (catches GENERIC, DCTS)
}
} // end switch (mServerType)
// blast the index entry into the indexFormat buffer as a 201: line.
aString.Append("201: ");
// FILENAME
aString.Append(thisEntry->mName);
if (thisEntry->mType == Dir)
aString.Append('/');
aString.Append(' ');
// CONTENT LENGTH
if (!thisEntry->mSupressSize) {
aString.AppendInt(thisEntry->mContentLen);
} else {
aString.Append('0');
}
aString.Append(' ');
// MODIFIED DATE
char buffer[256] = "";
// Note: The below is the RFC822/1123 format, as required by
// the application/http-index-format specs
// viewers of such a format can then reformat this into the
// current locale (or anything else they choose)
// make sure we don't have a null time struct
if ((thisEntry->mMDTM.tm_month + thisEntry->mMDTM.tm_mday +
thisEntry->mMDTM.tm_year + thisEntry->mMDTM.tm_hour +
thisEntry->mMDTM.tm_min) != nsnull) {
PR_FormatTimeUSEnglish(buffer, sizeof(buffer),
"%a, %d %b %Y %H:%M:%S", &thisEntry->mMDTM );
}
char *escapedDate = nsEscape(buffer, url_Path);
aString.Append(escapedDate);
nsMemory::Free(escapedDate);
aString.Append(' ');
// ENTRY TYPE
switch (thisEntry->mType) {
case Dir:
aString.Append("DIRECTORY");
break;
case Link:
aString.Append("SYMBOLIC-LINK");
break;
default:
aString.Append("FILE");
}
aString.Append(' ');
aString.Append(char(nsCRT::LF)); // complete this line
// END 201:
NS_DELETEXPCOM(thisEntry);
if (cr)
line = eol+2;
else
line = eol+1;
} // end while(eol)
return line;
}
nsresult
NS_NewFTPDirListingConv(nsFTPDirListingConv** aFTPDirListingConv)
{
NS_PRECONDITION(aFTPDirListingConv != nsnull, "null ptr");
if (! aFTPDirListingConv)
return NS_ERROR_NULL_POINTER;
*aFTPDirListingConv = new nsFTPDirListingConv();
if (! *aFTPDirListingConv)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(*aFTPDirListingConv);
return (*aFTPDirListingConv)->Init();
}
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