1 line
19 KiB
C
Executable File
1 line
19 KiB
C
Executable File
/* Copyright (c) 2017, Computer History Museum
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification, are permitted (subject to
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the limitations in the disclaimer below) provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following
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disclaimer in the documentation and/or other materials provided with the distribution.
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* Neither the name of Computer History Museum nor the names of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE
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COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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DAMAGE. */
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/************************************************************************
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*
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* Download a URL. Downloads only HTTP files at the moment.
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*
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************************************************************************/
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#include "downloadurl.h"
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#include "buildversion.h"
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#define FILE_NUM 117
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/* Copyright (c) 1998 by QUALCOMM Incorporated */
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#pragma segment DownURL
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/*
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* constants
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*/
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enum
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{
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kNotHTTPURLErr = -666,
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kWhatImplementationErr = -667,
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kTransferBufferSize = 4096
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};
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// Thread parameter struct
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typedef struct
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{
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char hostName[256];
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char httpMethodCommand[512];
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DownloadInfo info;
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short destFileRefNum;
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OSErr err;
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Ptr transferBuffer;
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long refCon;
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void (*FinishFunc)(long,OSErr,DownloadInfo*);
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ThreadID threadID;
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HTTPinfo HTTPstuff;
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Boolean aborted;
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Boolean completedDownload;
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} URLParms, *URLParmsPtr, **URLParmsHandle;
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// prototypes
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static pascal void *DownloadURLThread (void *threadParameter);
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static pascal void MyThreadTermination (ThreadID threadTerminated, void *terminationProcParam);
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static pascal void YieldingNotifier(void* contextPtr, OTEventCode code, OTResult result, void* cookie);
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static OSErr DownloadHTTPSimple(URLParmsHandle threadData,char *hostName,char *httpCommand, Boolean *redirect,HTTPinfo *pHTTPstuff);
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static OSErr ProcessHeader(Ptr *transferBuffer,long *bytesReceived,ResType *type,ResType *creator, URLParmsHandle threadData);
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static OSErr GetURLHost(const char *urlString, char *hostName,char *httpMethodCommand,Boolean doPOST);
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static short ParseHTTPHeader(StringPtr sHeader,char *sResult,Ptr p,long bufLen);
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/************************************************************************
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* DownloadURL - download file specified by URL, supports HTTP only
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*
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* To use POST: Pass HTTPinfo. The handles for will be
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* disposed of automatically. Do not dispose from caller!
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************************************************************************/
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OSErr DownloadURL(const char *urlString, FSSpecPtr destSpec,long refCon,void (*FinishFunc)(long,OSErr,DownloadInfo*),long *pReference,HTTPinfo *pHTTPstuff)
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{
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URLParmsHandle threadData = nil;
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OSErr err = noErr;
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ThreadID threadID;
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short destFileRefNum = 0;
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DECLARE_UPP(DownloadURLThread,ThreadEntry);
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DECLARE_UPP(MyThreadTermination,ThreadTermination);
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if (TCPWillDial(true)) return -1; // Don't dial to download
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#ifdef DEBUG
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if (pHTTPstuff && pHTTPstuff->post) ComposeLogS(LOG_PLIST,nil,"\pDownloadURL: %s",urlString);
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#endif
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// Set up thread
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if (threadData = NuHandleClear(sizeof(**threadData)))
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{
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// Parse the URL to get the hostname and HTTP GET command strings
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LDRef(threadData);
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err = GetURLHost(urlString,(*threadData)->hostName,(*threadData)->httpMethodCommand,pHTTPstuff && pHTTPstuff->post);
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UL(threadData);
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if (!err)
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{
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// Create and open the file
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CInfoPBRec hfi;
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FSpCreate(destSpec,CREATOR,kFileInProcessType,smSystemScript); // Type and creator will be changed later
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if (!AFSpGetCatInfo(destSpec,destSpec,&hfi) && hfi.hFileInfo.ioFRefNum)
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{
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// This file's already open. We can't write to it.
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err = fBsyErr;
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#ifdef DEBUG
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if (RunType!=Production) DebugStr("\pDownload file is already open!");
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#endif
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}
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else
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err = FSpOpenDF(destSpec,fsRdWrPerm,&destFileRefNum);
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if (!err)
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{
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(*threadData)->info.spec = *destSpec;
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(*threadData)->destFileRefNum = destFileRefNum;
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(*threadData)->transferBuffer = NuPtr(kTransferBufferSize);
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(*threadData)->refCon = refCon;
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(*threadData)->FinishFunc = FinishFunc;
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if (pHTTPstuff)
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(*threadData)->HTTPstuff = *pHTTPstuff;
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INIT_UPP(DownloadURLThread,ThreadEntry);
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err = NewThread(kCooperativeThread, DownloadURLThreadUPP,(void *)threadData,0,kCreateIfNeeded,nil,&threadID);
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if (!err)
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{
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INIT_UPP(MyThreadTermination,ThreadTermination);
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SetThreadTerminator(threadID, MyThreadTerminationUPP, (void *)threadData);
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(*threadData)->threadID = threadID;
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}
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}
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}
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}
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else
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err = MemError();
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if (err)
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{
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ZapHandle(threadData);
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if (destFileRefNum)
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{
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FSClose(destFileRefNum);
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FSpDelete(destSpec);
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}
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}
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*pReference = (long)threadData;
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return err;
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}
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/************************************************************************
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* GetURLHost - get hostname and HTTP GET command strings
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************************************************************************/
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static OSErr GetURLHost(const char *urlString, char *hostName,char *httpMethodCommand, Boolean doPOST)
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{
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size_t hostCharCount;
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Str255 scratch;
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const char *fullUrl = urlString;
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Boolean useProxy = PrefIsSet(PREF_USE_HTTP_PROXY);
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*hostName = *httpMethodCommand = 0;
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// First check that the urlString begins with "http://"
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if (strscmp((UPtr)urlString, "http://"))
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return kNotHTTPURLErr;
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// Now skip over the "http://" and extract the host name.
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// Skip over the "http://".
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urlString += strlen("http://");
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// Ignore any username/password stuff
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if (strchr(urlString,'@')) urlString = strchr(urlString,'@')+1;
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// Count the characters before the next slash.
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hostCharCount = strcspn(urlString, "/");
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// Extract those characters from the URL into hostName
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// and then make sure it's null terminated.
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strncpy(hostName, urlString, hostCharCount);
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hostName[hostCharCount] = 0;
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urlString += hostCharCount;
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// Now place the URL into the HTTP command that we send to DownloadHTTPSimple.
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strcpy(httpMethodCommand,doPOST ? "POST " : "GET ");
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strcat(httpMethodCommand,useProxy?fullUrl:urlString);
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if (*urlString == 0) strcat(httpMethodCommand,"/");
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strcat(httpMethodCommand," HTTP/1.0\r\nAccept: */*\r\nHost: ");
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strcat(httpMethodCommand,hostName);
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strcat(httpMethodCommand,"\r\n");
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if (useProxy)
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{
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// Use HTTP proxy host
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GetPref(scratch,PREF_HTTP_PROXY_HOST);
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PtoCcpy(hostName,scratch);
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}
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// Add a ":80" to the host name if necessary.
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if ( strchr( hostName, ':' ) == nil )
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strcat( hostName, ":80" );
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return noErr;
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}
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/************************************************************************
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* MyThreadTermination - clean up when thread dies
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************************************************************************/
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static pascal void MyThreadTermination (ThreadID threadTerminated, void *terminationProcParam)
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{
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URLParmsHandle threadData;
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Boolean completed;
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threadData = (URLParmsHandle)terminationProcParam;
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completed = (*threadData)->completedDownload;
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if ((*threadData)->destFileRefNum)
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{
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TruncAtMark((*threadData)->destFileRefNum);
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FSClose((*threadData)->destFileRefNum);
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}
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if ((*threadData)->transferBuffer)
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ZapPtr((*threadData)->transferBuffer);
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if (!completed && !(*threadData)->err)
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// Download not complete. Make sure we report an error to completion function.
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(*threadData)->err = -1; // Shouldn't need to do this, but let's make sure
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// the data pointed to by refCon is not guaranteed to be around after we aborted.
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if (!(*threadData)->aborted)
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{
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LDRef(threadData);
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(*(*threadData)->FinishFunc)((*threadData)->refCon,(*threadData)->err,&(*threadData)->info);
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UL(threadData);
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}
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DisposeHandle((Handle)threadData);
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}
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/************************************************************************
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* DownloadURLThread - thread entry for URL download
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************************************************************************/
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static pascal void *DownloadURLThread (void *threadParameter)
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{
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URLParmsHandle threadData;
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char hostName[256];
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char httpMethodCommand[256];
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OSErr err;
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ThreadID threadID;
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Boolean redirect;
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HTTPinfo HTTPstuff;
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threadData = (URLParmsHandle)threadParameter;
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GetCurrentThread(&threadID);
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(*threadData)->threadID = threadID;
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if (!(*threadData)->transferBuffer)
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return nil;
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strcpy(hostName,(*threadData)->hostName);
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strcpy(httpMethodCommand,(*threadData)->httpMethodCommand);
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HTTPstuff = (*threadData)->HTTPstuff;
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do
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{
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err = DownloadHTTPSimple(threadData,hostName,httpMethodCommand,&redirect,&HTTPstuff);
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} while (redirect);
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(*threadData)->err = err;
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return nil;
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}
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/************************************************************************
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* DownloadHTTPSimple - thread entry for URL download
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************************************************************************/
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static OSErr DownloadHTTPSimple(URLParmsHandle threadData,char *hostName,char *httpCommand, Boolean *redirect,HTTPinfo *pHTTPstuff)
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// Download a URL from the a web server. hostName is a pointer
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// to a string that contains the DNS address of the web server.
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// The DNS address must be suffixed by ":<port>", where <port>
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// is the port number the web server is operating on.
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// httpCommand contains the HTTP command to send. Typically this
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// is of the form:
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//
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// GET <x> HTTP/1.0\0x13\0x10\0x13\0x10
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//
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// where <x> is the URL path. destFileRefNum is the file
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// reference number to which the results of the HTTP command
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// are written. This routine does not parse the returned HTTP
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// header in any way. The entire incoming stream goes into
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// the file verbatim.
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//
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// For example, if you were asked to download a URL like:
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//
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// http://devworld.apple.com/dev/technotes.shtml
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//
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// you would set:
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//
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// o hostName to "devworld.apple.com:80" (80 is the
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// default port for HTTP.
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// o httpCommand to "GET /dev/technotes.shtml HTTP/1.0\0x13\0x10\0x13\0x10"
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{
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TransStream stream = nil;
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OSStatus err = NewTransStream(&stream);
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Str255 pHost,sTemp;
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Str32 sShort;
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long port;
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OTResult bytesReceived;
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ResType type=nil,creator=nil;
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Boolean hdrDone = false;
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char urlString[256];
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unsigned char *p;
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TransVector netTrans = GetTCPTrans(); // might as well use MacTCP calls if we're supposed to.
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unsigned char *transferBuffer = (*threadData)->transferBuffer;
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// error allocating the transstream
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if (err) return (err);
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// one of the parameters is missing
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if (!hostName || !httpCommand) return (paramErr);
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*redirect = false;
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// figure out the server and port from the hostname.
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WriteZero(pHost, sizeof(Str255));
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pHost[0] = MIN(strlen(hostName), 255);
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BlockMoveData(hostName,&pHost[1],pHost[0]);
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p = PIndex(pHost, ':');
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if (p)
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{
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pHost[0] = p - pHost - 1; // pHost now contains the hostname;
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p++;
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if (port = atoi(p)); // port is whatever's left over
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else port = 80; // or the default http: port
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}
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// connect to the http server
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err = (*netTrans.vConnectTrans)(stream, pHost, port, true, GetRLong(OPEN_TIMEOUT));
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#ifdef DEBUG
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if (pHTTPstuff->post) ComposeLogS(LOG_PLIST,nil,"\pPlayList Connect %d",err);
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#endif
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if (err == noErr)
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{
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// Set up HTTP headers (and request body)
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Accumulator a;
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AccuInit(&a);
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// HTTP command
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AccuAddPtr(&a,httpCommand,strlen(httpCommand));
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// User-Agent header
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ComposeString(sTemp,"\pUser-Agent: Eudora/%d.%d.%db%d (MacOS)\r\n",MAJOR_VERSION,MINOR_VERSION,INC_VERSION,BUILD_VERSION);
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AccuAddStr(&a,sTemp);
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// Content-Language header
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ComposeString(sTemp,"\pContent-Language: %p\r\n",GetLanguageCode(sShort));
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AccuAddStr(&a,sTemp);
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// Content-Type header
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if (*pHTTPstuff->sContentType)
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{
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ComposeString(sTemp,"\p%r: %p\r\n",InterestHeadStrn+hContentType,pHTTPstuff->sContentType);
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AccuAddStr(&a,sTemp);
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}
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// Content-Length header
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if (pHTTPstuff->hRequestData)
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{
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ComposeString(sTemp,"\pContent-Length: %d\r\n",GetHandleSize(pHTTPstuff->hRequestData));
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AccuAddStr(&a,sTemp);
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}
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// MessageType header
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if (*pHTTPstuff->sMessageType)
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{
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ComposeString(sTemp,"\pMessageType: %p\r\n",pHTTPstuff->sMessageType);
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AccuAddStr(&a,sTemp);
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}
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// Checksum header
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if (*pHTTPstuff->sCheckSum)
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{
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ComposeString(sTemp,"\pChecksum: %p\r\n",pHTTPstuff->sCheckSum);
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AccuAddStr(&a,sTemp);
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}
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// End of headers
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AccuAddStr(&a,"\p\r\n");
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// Body of request
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if (pHTTPstuff->hRequestData)
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AccuAddHandle(&a,pHTTPstuff->hRequestData);
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// Send request
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err = (*netTrans.vSendTrans)(stream,LDRef(a.data),a.offset,nil);
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if (pHTTPstuff->post)
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CarefulLog(LOG_PLIST,LOG_SENT,*a.data,a.offset);
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AccuZap(a);
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if (err == noErr)
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{
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OSErr OTErr = noErr;
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// receive the data comming back from the server.
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do
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{
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bytesReceived = kTransferBufferSize;
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OTErr = (*netTrans.vRecvTrans)(stream, transferBuffer, &bytesReceived);
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if (OTErr == noErr)
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{
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// if we received some data, and have not aborted, write it to the cache file
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if ((bytesReceived > 0) && !((*threadData)->aborted))
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{
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Ptr buffer;
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buffer = transferBuffer;
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if (!hdrDone)
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{
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err = ProcessHeader(&buffer,&bytesReceived,&type,&creator,threadData);
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if ((err==301 || err==302 || err==305) && ParseHTTPHeader("\pLocation:",urlString,transferBuffer,bytesReceived))
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{
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// Error 301 "Moved Permamently", 302 "Moved Temporarily" or 305 "Use Proxy". Redirect to new URL
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if (!GetURLHost(urlString,hostName,httpCommand,pHTTPstuff->post))
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*redirect = true;
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}
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hdrDone = true;
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}
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if (!err && bytesReceived > 0)
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{
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#ifdef DEBUG
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if (pHTTPstuff->post)
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{
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// The only requested item that does a POST is playlist. We are having a problem
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// with the playlist getting written to the wrong file. Let's do some verification here.
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FSSpec playlistSpec;
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if (GetFileByRef((*threadData)->destFileRefNum,&playlistSpec))
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if (RunType!=Production) DebugStr("\pBad file ref for playlist.");
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CarefulLog(LOG_PLIST,LOG_GOT,buffer,bytesReceived);
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}
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#endif
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err = FSWrite((*threadData)->destFileRefNum, &bytesReceived, buffer);
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}
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}
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}
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} while ((OTErr == noErr) && (err == noErr) && !((*threadData)->aborted));
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}
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}
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// Clean up.
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(*netTrans.vDisTrans)(stream); // send a disconnect to the other end
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(*netTrans.vDestroyTrans)(stream); // wait for the disconnect in the queue of closing connections
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ZapTransStream(&stream); // free up all other memory used for the connection
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if (!*redirect)
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{
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FSSpec spec = (*threadData)->info.spec;
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// close and delete the file if we aborted. Make sure caller resets (*thread)->destFileRefNum!
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if (err || (*threadData)->aborted)
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{
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FSClose((*threadData)->destFileRefNum);
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FSpDelete(&spec);
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(*threadData)->destFileRefNum = 0;
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}
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else
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{
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// Tweak the file type of the new cache file
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if (type || creator)
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TweakFileType(&spec,type,creator);
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(*threadData)->completedDownload = true;
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}
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}
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ZapHandle(pHTTPstuff->hRequestData);
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return (err);
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}
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/************************************************************************
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* ProcessHeader - get past HTTP header, look for Content-Type header
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************************************************************************/
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static OSErr ProcessHeader(Ptr *transferBuffer,long *bytesReceived,ResType *type,ResType *creator,URLParmsHandle threadData)
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{
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Str255 s;
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long offset;
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Ptr p = *transferBuffer;
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Ptr pTemp;
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MIMEMap mm;
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Str32 sContType,sContSubType;
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OSErr err = noErr;
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Str32 sErr;
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long errNum;
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// look for error code
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if (!strscmp(p, "HTTP/"))
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{
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pTemp = strchr(p,' ');
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if (pTemp < strchr(p,'\n') || pTemp < strchr(p,'\r'))
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{
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if (isdigit(sErr[1] = pTemp[1]) && isdigit(sErr[2] = pTemp[2]) && isdigit(sErr[3] = pTemp[3]))
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{
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sErr[0] = 3;
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StringToNum(sErr,&errNum);
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if (errNum != 200) // 200 = OK
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return errNum; // HTTP error
|
|
}
|
|
}
|
|
}
|
|
|
|
LDRef(threadData);
|
|
// search for Content-Type
|
|
GetRString(s,InterestHeadStrn+hContentType);
|
|
if (ParseHTTPHeader(s,s,p,*bytesReceived))
|
|
// get filetype and creator
|
|
if (pTemp = strchr(s,'/'))
|
|
{
|
|
MakePStr(sContType,s,pTemp-s);
|
|
MakePStr(sContSubType,pTemp+1,strlen(pTemp+1));
|
|
if (FindMIMEMapPtr(sContType,sContSubType,(*threadData)->info.spec.name,&mm))
|
|
{
|
|
*type = mm.type;
|
|
*creator = mm.creator;
|
|
}
|
|
}
|
|
|
|
// search for checksum
|
|
ParseHTTPHeader("\pChecksum",s,p,*bytesReceived);
|
|
CtoPCpy((*threadData)->info.checksum,s);
|
|
|
|
// Search for end of header
|
|
if ((offset = SearchPtrPtr("\r\n\r\n",4,p,0,*bytesReceived,true,false,nil))>=0)
|
|
{
|
|
*transferBuffer += offset+4;
|
|
*bytesReceived -= offset+4;
|
|
}
|
|
else if ((offset = SearchPtrPtr("\n\n",2,p,0,*bytesReceived,true,false,nil))>=0 ||
|
|
(offset = SearchPtrPtr("\r\r",2,p,0,*bytesReceived,true,false,nil))>=0)
|
|
{
|
|
*transferBuffer += offset+2;
|
|
*bytesReceived -= offset+2;
|
|
}
|
|
UL(threadData);
|
|
return err;
|
|
}
|
|
|
|
/************************************************************************
|
|
* ParseHTTPHeader - get data for a header
|
|
************************************************************************/
|
|
static short ParseHTTPHeader(StringPtr sHeader,char *sResult,Ptr p,long bufLen)
|
|
{
|
|
long offset,end;
|
|
short len = 0;
|
|
|
|
// search for header
|
|
if (offset = SearchPtrPtr(sHeader+1,*sHeader,p,0,bufLen,false,false,nil))
|
|
{
|
|
offset += *sHeader + 1;
|
|
while (*(p+offset)==' ') // get past any spaces
|
|
offset++;
|
|
for(end = offset;*(p+end)!='\r'&&*(p+end)!='\n';end++);
|
|
len = end-offset;
|
|
if (len < 250)
|
|
{
|
|
// make type/subtype into c-string
|
|
BMD(p+offset,sResult,len);
|
|
sResult[len] = 0;
|
|
}
|
|
}
|
|
return len;
|
|
}
|
|
|
|
/************************************************************************
|
|
* URLDownloadAbort - abort this download
|
|
************************************************************************/
|
|
void URLDownloadAbort(long urlRef)
|
|
{
|
|
URLParmsHandle threadData = (URLParmsHandle)urlRef;
|
|
ThreadID threadID = (*threadData)->threadID;
|
|
|
|
// tell the thread to cancel itself.
|
|
(*threadData)->err = userCanceledErr;
|
|
(*threadData)->aborted = true;
|
|
}
|
|
|
|
/************************************************************************
|
|
* DownloadURLOk - return true if we're allow to start URL downloads
|
|
************************************************************************/
|
|
Boolean DownloadURLOK(void)
|
|
{
|
|
Boolean result = false;
|
|
|
|
// don't download if we're offline
|
|
if (Offline);
|
|
else
|
|
{
|
|
//
|
|
// don't download if PPP is the selected mode of connection, and we're not (yet) connected
|
|
if (CanCheckPPPState() && HaveTheDiseaseCalledOSX() ? PPPDown() : !PPPIsMostDefinitelyUpAndRunning());
|
|
else
|
|
{
|
|
result = true;
|
|
}
|
|
}
|
|
|
|
return (result);
|
|
} |