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401 lines
11 KiB
401 lines
11 KiB
// -*- mode: cpp; mode: fold -*-
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// Description /*{{{*/
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// $Id: acquire-method.cc,v 1.11 1998/12/04 21:16:46 jgg Exp $
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/* ######################################################################
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Acquire Method
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##################################################################### */
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/*}}}*/
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// Include Files /*{{{*/
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#ifdef __GNUG__
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#pragma implementation "apt-pkg/acquire-method.h"
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#endif
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#include <apt-pkg/acquire-method.h>
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#include <apt-pkg/error.h>
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#include <apt-pkg/configuration.h>
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#include <strutl.h>
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#include <apt-pkg/fileutl.h>
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#include <stdio.h>
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/*}}}*/
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// AcqMethod::pkgAcqMethod - Constructor /*{{{*/
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// ---------------------------------------------------------------------
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/* This constructs the initialization text */
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pkgAcqMethod::pkgAcqMethod(const char *Ver,unsigned long Flags)
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{
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char S[300] = "";
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char *End = S;
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strcat(End,"100 Capabilities\n");
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sprintf(End+strlen(End),"Version: %s\n",Ver);
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if ((Flags & SingleInstance) == SingleInstance)
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strcat(End,"Single-Instance: true\n");
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if ((Flags & Pipeline) == Pipeline)
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strcat(End,"Pipeline: true\n");
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if ((Flags & SendConfig) == SendConfig)
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strcat(End,"Send-Config: true\n");
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if ((Flags & LocalOnly) == LocalOnly)
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strcat(End,"Local-Only: true\n");
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strcat(End,"\n");
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if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
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exit(100);
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SetNonBlock(STDIN_FILENO,true);
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Queue = 0;
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}
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/*}}}*/
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// AcqMethod::Fail - A fetch has failed /*{{{*/
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// ---------------------------------------------------------------------
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/* */
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void pkgAcqMethod::Fail(bool Transient)
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{
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string Err = "Undetermined Error";
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if (_error->empty() == false)
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_error->PopMessage(Err);
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_error->Discard();
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Fail(Err,Transient);
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}
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/*}}}*/
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// AcqMethod::Fail - A fetch has failed /*{{{*/
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// ---------------------------------------------------------------------
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/* */
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void pkgAcqMethod::Fail(string Err,bool Transient)
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{
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char S[1024];
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if (Queue != 0)
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{
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snprintf(S,sizeof(S),"400 URI Failure\nURI: %s\n"
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"Message: %s\n",Queue->Uri.c_str(),Err.c_str());
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// Dequeue
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FetchItem *Tmp = Queue;
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Queue = Queue->Next;
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delete Tmp;
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}
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else
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snprintf(S,sizeof(S),"400 URI Failure\nURI: <UNKNOWN>\n"
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"Message: %s\n",Err.c_str());
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// Set the transient flag
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if (Transient == true)
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strcat(S,"Transient-Failure: true\n\n");
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else
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strcat(S,"\n");
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if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
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exit(100);
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}
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/*}}}*/
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// AcqMethod::URIStart - Indicate a download is starting /*{{{*/
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// ---------------------------------------------------------------------
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/* */
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void pkgAcqMethod::URIStart(FetchResult &Res)
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{
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if (Queue == 0)
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abort();
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char S[1024] = "";
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char *End = S;
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End += snprintf(S,sizeof(S),"200 URI Start\nURI: %s\n",Queue->Uri.c_str());
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if (Res.Size != 0)
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End += snprintf(End,sizeof(S) - (End - S),"Size: %u\n",Res.Size);
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if (Res.LastModified != 0)
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End += snprintf(End,sizeof(S) - (End - S),"Last-Modified: %s\n",
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TimeRFC1123(Res.LastModified).c_str());
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if (Res.ResumePoint != 0)
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End += snprintf(End,sizeof(S) - (End - S),"Resume-Point: %u\n",
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Res.ResumePoint);
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strcat(End,"\n");
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if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
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exit(100);
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}
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/*}}}*/
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// AcqMethod::URIDone - A URI is finished /*{{{*/
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// ---------------------------------------------------------------------
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/* */
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void pkgAcqMethod::URIDone(FetchResult &Res, FetchResult *Alt)
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{
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if (Queue == 0)
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abort();
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char S[1024] = "";
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char *End = S;
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End += snprintf(S,sizeof(S),"201 URI Done\nURI: %s\n",Queue->Uri.c_str());
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if (Res.Filename.empty() == false)
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End += snprintf(End,sizeof(S) - (End - S),"Filename: %s\n",Res.Filename.c_str());
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if (Res.Size != 0)
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End += snprintf(End,sizeof(S) - (End - S),"Size: %u\n",Res.Size);
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if (Res.LastModified != 0)
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End += snprintf(End,sizeof(S) - (End - S),"Last-Modified: %s\n",
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TimeRFC1123(Res.LastModified).c_str());
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if (Res.MD5Sum.empty() == false)
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End += snprintf(End,sizeof(S) - (End - S),"MD5Sum: %s\n",Res.MD5Sum.c_str());
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if (Res.ResumePoint != 0)
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End += snprintf(End,sizeof(S) - (End - S),"Resume-Point: %u\n",
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Res.ResumePoint);
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if (Res.IMSHit == true)
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strcat(End,"IMS-Hit: true\n");
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End = S + strlen(S);
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if (Alt != 0)
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{
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if (Alt->Filename.empty() == false)
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End += snprintf(End,sizeof(S) - (End - S),"Alt-Filename: %s\n",Alt->Filename.c_str());
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if (Alt->Size != 0)
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End += snprintf(End,sizeof(S) - (End - S),"Alt-Size: %u\n",Alt->Size);
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if (Alt->LastModified != 0)
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End += snprintf(End,sizeof(S) - (End - S),"Alt-Last-Modified: %s\n",
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TimeRFC1123(Alt->LastModified).c_str());
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if (Alt->MD5Sum.empty() == false)
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End += snprintf(End,sizeof(S) - (End - S),"Alt-MD5Sum: %s\n",
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Alt->MD5Sum.c_str());
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if (Alt->IMSHit == true)
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strcat(End,"Alt-IMS-Hit: true\n");
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}
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strcat(End,"\n");
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if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
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exit(100);
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// Dequeue
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FetchItem *Tmp = Queue;
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Queue = Queue->Next;
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delete Tmp;
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}
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/*}}}*/
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// AcqMethod::MediaFail - Syncronous request for new media /*{{{*/
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// ---------------------------------------------------------------------
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/* This sends a 403 Media Failure message to the APT and waits for it
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to be ackd */
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void pkgAcqMethod::MediaFail(string Required,string Drive)
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{
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char S[1024];
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snprintf(S,sizeof(S),"403 Media Failure\nMedia: %s\nDrive: %s\n\n",
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Required.c_str(),Drive.c_str());
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if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
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exit(100);
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vector<string> MyMessages;
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/* Here we read messages until we find a 603, each non 603 message is
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appended to the main message list for later processing */
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while (1)
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{
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if (WaitFd(STDIN_FILENO) == false)
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exit(0);
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if (ReadMessages(STDIN_FILENO,MyMessages) == false)
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exit(0);
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string Message = MyMessages.front();
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MyMessages.erase(MyMessages.begin());
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// Fetch the message number
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char *End;
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int Number = strtol(Message.c_str(),&End,10);
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if (End == Message.c_str())
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{
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cerr << "Malformed message!" << endl;
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exit(100);
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}
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// Change ack
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if (Number == 603)
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{
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while (Message.empty() == false)
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{
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Messages.push_back(MyMessages.front());
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MyMessages.erase(MyMessages.begin());
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}
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return StringToBool(LookupTag(Message,"Fail"),false);
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}
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Messages.push_back(Message);
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}
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}
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/*}}}*/
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// AcqMethod::Configuration - Handle the configuration message /*{{{*/
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// ---------------------------------------------------------------------
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/* This parses each configuration entry and puts it into the _config
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Configuration class. */
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bool pkgAcqMethod::Configuration(string Message)
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{
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::Configuration &Cnf = *_config;
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const char *I = Message.begin();
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unsigned int Length = strlen("Config-Item");
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for (; I + Length < Message.end(); I++)
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{
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// Not a config item
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if (I[Length] != ':' || stringcasecmp(I,I+Length,"Config-Item") != 0)
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continue;
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I += Length + 1;
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for (; I < Message.end() && *I == ' '; I++);
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const char *Equals = I;
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for (; Equals < Message.end() && *Equals != '='; Equals++);
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const char *End = Equals;
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for (; End < Message.end() && *End != '\n'; End++);
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if (End == Equals)
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return false;
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Cnf.Set(string(I,Equals-I),string(Equals+1,End-Equals-1));
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I = End;
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}
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return true;
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}
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/*}}}*/
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// AcqMethod::Run - Run the message engine /*{{{*/
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// ---------------------------------------------------------------------
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/* */
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int pkgAcqMethod::Run(bool Single)
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{
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while (1)
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{
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// Block if the message queue is empty
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if (Messages.empty() == true)
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{
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if (Single == false)
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if (WaitFd(STDIN_FILENO) == false)
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return 0;
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if (ReadMessages(STDIN_FILENO,Messages) == false)
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return 0;
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}
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// Single mode exits if the message queue is empty
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if (Single == true && Messages.empty() == true)
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return 0;
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string Message = Messages.front();
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Messages.erase(Messages.begin());
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// Fetch the message number
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char *End;
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int Number = strtol(Message.c_str(),&End,10);
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if (End == Message.c_str())
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{
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cerr << "Malformed message!" << endl;
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return 100;
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}
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switch (Number)
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{
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case 601:
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if (Configuration(Message) == false)
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return 100;
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break;
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case 600:
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{
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FetchItem *Tmp = new FetchItem;
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Tmp->Uri = LookupTag(Message,"URI");
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Tmp->DestFile = LookupTag(Message,"FileName");
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if (StrToTime(LookupTag(Message,"Last-Modified"),Tmp->LastModified) == false)
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Tmp->LastModified = 0;
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Tmp->IndexFile = StringToBool(LookupTag(Message,"Index-File"),false);
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Tmp->Next = 0;
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// Append it to the list
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FetchItem **I = &Queue;
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for (; *I != 0; I = &(*I)->Next);
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*I = Tmp;
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// Notify that this item is to be fetched.
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if (Fetch(Tmp) == false)
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Fail();
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break;
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}
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}
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}
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return 0;
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}
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/*}}}*/
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// AcqMethod::Log - Send a log message /*{{{*/
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// ---------------------------------------------------------------------
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/* */
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void pkgAcqMethod::Log(const char *Format,...)
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{
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string CurrentURI = "<UNKNOWN>";
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if (Queue != 0)
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CurrentURI = Queue->Uri;
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va_list args;
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va_start(args,Format);
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// sprintf the description
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char S[1024];
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unsigned int Len = snprintf(S,sizeof(S),"101 Log\nURI: %s\n"
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"Message: ",CurrentURI.c_str());
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vsnprintf(S+Len,sizeof(S)-Len,Format,args);
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strcat(S,"\n\n");
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if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
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exit(100);
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}
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/*}}}*/
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// AcqMethod::Status - Send a status message /*{{{*/
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// ---------------------------------------------------------------------
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/* */
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void pkgAcqMethod::Status(const char *Format,...)
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{
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string CurrentURI = "<UNKNOWN>";
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if (Queue != 0)
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CurrentURI = Queue->Uri;
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va_list args;
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va_start(args,Format);
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// sprintf the description
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char S[1024];
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unsigned int Len = snprintf(S,sizeof(S),"102 Status\nURI: %s\n"
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"Message: ",CurrentURI.c_str());
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vsnprintf(S+Len,sizeof(S)-Len,Format,args);
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strcat(S,"\n\n");
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if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
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exit(100);
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}
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/*}}}*/
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// AcqMethod::FetchResult::FetchResult - Constructor /*{{{*/
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// ---------------------------------------------------------------------
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/* */
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pkgAcqMethod::FetchResult::FetchResult() : LastModified(0),
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IMSHit(false), Size(0), ResumePoint(0)
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{
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}
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/*}}}*/
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