New http method
[ntk/apt.git] / apt-pkg / acquire-method.cc
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1// -*- mode: cpp; mode: fold -*-
2// Description /*{{{*/
be4401bf 3// $Id: acquire-method.cc,v 1.2 1998/11/01 05:27:30 jgg Exp $
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4/* ######################################################################
5
6 Acquire Method
7
8 ##################################################################### */
9 /*}}}*/
10// Include Files /*{{{*/
11#ifdef __GNUG__
12#pragma implementation "apt-pkg/acquire-method.h"
13#endif
14#include <apt-pkg/acquire-method.h>
15#include <apt-pkg/error.h>
16#include <apt-pkg/configuration.h>
17#include <strutl.h>
18#include <apt-pkg/fileutl.h>
19
20#include <stdio.h>
21 /*}}}*/
22
23// AcqMethod::pkgAcqMethod - Constructor /*{{{*/
24// ---------------------------------------------------------------------
25/* This constructs the initialization text */
26pkgAcqMethod::pkgAcqMethod(const char *Ver,unsigned long Flags)
27{
28 char S[300] = "";
29 char *End = S;
30 strcat(End,"100 Capabilities\n");
31 sprintf(End+strlen(End),"Version: %s\n",Ver);
32
33 if ((Flags & SingleInstance) == SingleInstance)
34 strcat(End,"Single-Instance: true\n");
35
36 if ((Flags & PreScan) == PreScan)
37 strcat(End,"Pre-Scan: true\n");
38
39 if ((Flags & Pipeline) == Pipeline)
40 strcat(End,"Pipeline: true\n");
41
42 if ((Flags & SendConfig) == SendConfig)
43 strcat(End,"Send-Config: true\n");
44 strcat(End,"\n");
45
46 if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
47 exit(100);
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48
49 SetNonBlock(STDIN_FILENO,true);
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50}
51 /*}}}*/
52// AcqMethod::Fail - A fetch has failed /*{{{*/
53// ---------------------------------------------------------------------
54/* */
55void pkgAcqMethod::Fail()
56{
57 string Err = "Undetermined Error";
58 if (_error->empty() == false)
59 _error->PopMessage(Err);
60 _error->Discard();
61 Fail(Err);
62}
63 /*}}}*/
64// AcqMethod::Fail - A fetch has failed /*{{{*/
65// ---------------------------------------------------------------------
66/* */
67void pkgAcqMethod::Fail(string Err)
68{
69 char S[1024];
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70 if (Queue != 0)
71 {
72 snprintf(S,sizeof(S),"400 URI Failure\nURI: %s\n"
73 "Message: %s\n\n",Queue->Uri.c_str(),Err.c_str());
74
75 // Dequeue
76 FetchItem *Tmp = Queue;
77 Queue = Queue->Next;
78 delete Tmp;
79 }
80 else
81 snprintf(S,sizeof(S),"400 URI Failure\nURI: <UNKNOWN>\n"
82 "Message: %s\n\n",Err.c_str());
83
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84 if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
85 exit(100);
86}
87 /*}}}*/
88// AcqMethod::URIStart - Indicate a download is starting /*{{{*/
89// ---------------------------------------------------------------------
90/* */
be4401bf 91void pkgAcqMethod::URIStart(FetchResult &Res)
93bf083d 92{
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93 if (Queue == 0)
94 abort();
95
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96 char S[1024] = "";
97 char *End = S;
98
be4401bf 99 End += snprintf(S,sizeof(S),"200 URI Start\nURI: %s\n",Queue->Uri.c_str());
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100 if (Res.Size != 0)
101 End += snprintf(End,sizeof(S) - (End - S),"Size: %u\n",Res.Size);
102
103 if (Res.LastModified != 0)
104 End += snprintf(End,sizeof(S) - (End - S),"Last-Modified: %s\n",
105 TimeRFC1123(Res.LastModified).c_str());
106
be4401bf 107 if (Res.ResumePoint != 0)
93bf083d 108 End += snprintf(End,sizeof(S) - (End - S),"Resume-Point: %u\n",
be4401bf 109 Res.ResumePoint);
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110
111 strcat(End,"\n");
112 if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
113 exit(100);
114}
115 /*}}}*/
116// AcqMethod::URIDone - A URI is finished /*{{{*/
117// ---------------------------------------------------------------------
118/* */
119void pkgAcqMethod::URIDone(FetchResult &Res, FetchResult *Alt)
120{
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121 if (Queue == 0)
122 abort();
123
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124 char S[1024] = "";
125 char *End = S;
126
be4401bf 127 End += snprintf(S,sizeof(S),"201 URI Done\nURI: %s\n",Queue->Uri.c_str());
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128
129 if (Res.Filename.empty() == false)
130 End += snprintf(End,sizeof(S) - (End - S),"Filename: %s\n",Res.Filename.c_str());
131
132 if (Res.Size != 0)
133 End += snprintf(End,sizeof(S) - (End - S),"Size: %u\n",Res.Size);
134
135 if (Res.LastModified != 0)
136 End += snprintf(End,sizeof(S) - (End - S),"Last-Modified: %s\n",
137 TimeRFC1123(Res.LastModified).c_str());
138
139 if (Res.MD5Sum.empty() == false)
140 End += snprintf(End,sizeof(S) - (End - S),"MD5Sum: %s\n",Res.MD5Sum.c_str());
141
142 if (Res.IMSHit == true)
143 strcat(End,"IMS-Hit: true\n");
144 End = S + strlen(S);
145
146 if (Alt != 0)
147 {
148 if (Alt->Filename.empty() == false)
149 End += snprintf(End,sizeof(S) - (End - S),"Alt-Filename: %s\n",Alt->Filename.c_str());
150
151 if (Alt->Size != 0)
152 End += snprintf(End,sizeof(S) - (End - S),"Alt-Size: %u\n",Alt->Size);
153
154 if (Alt->LastModified != 0)
155 End += snprintf(End,sizeof(S) - (End - S),"Alt-Last-Modified: %s\n",
156 TimeRFC1123(Alt->LastModified).c_str());
157
158 if (Alt->MD5Sum.empty() == false)
159 End += snprintf(End,sizeof(S) - (End - S),"Alt-MD5Sum: %s\n",
160 Alt->MD5Sum.c_str());
161
162 if (Alt->IMSHit == true)
163 strcat(End,"Alt-IMS-Hit: true\n");
164 }
165
166 strcat(End,"\n");
167 if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
168 exit(100);
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169
170 // Dequeue
171 FetchItem *Tmp = Queue;
172 Queue = Queue->Next;
173 delete Tmp;
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174}
175 /*}}}*/
176// AcqMethod::Configuration - Handle the configuration message /*{{{*/
177// ---------------------------------------------------------------------
178/* This parses each configuration entry and puts it into the _config
179 Configuration class. */
180bool pkgAcqMethod::Configuration(string Message)
181{
182 ::Configuration &Cnf = *_config;
183
184 const char *I = Message.begin();
185
186 unsigned int Length = strlen("Config-Item");
187 for (; I + Length < Message.end(); I++)
188 {
189 // Not a config item
190 if (I[Length] != ':' || stringcasecmp(I,I+Length,"Config-Item") != 0)
191 continue;
192
193 I += Length + 1;
194
195 for (; I < Message.end() && *I == ' '; I++);
196 const char *Equals = I;
197 for (; Equals < Message.end() && *Equals != '='; Equals++);
198 const char *End = Equals;
199 for (; End < Message.end() && *End != '\n'; End++);
200 if (End == Equals)
201 return false;
202
203 Cnf.Set(string(I,Equals-I),string(Equals+1,End-Equals-1));
204 I = End;
205 }
206
207 return true;
208}
209 /*}}}*/
210// AcqMethod::Run - Run the message engine /*{{{*/
211// ---------------------------------------------------------------------
212/* */
be4401bf 213int pkgAcqMethod::Run(bool Single)
93bf083d 214{
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215 while (1)
216 {
be4401bf 217 // Block if the message queue is empty
93bf083d 218 if (Messages.empty() == true)
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219 {
220 if (Single == false)
221 if (WaitFd(STDIN_FILENO) == false)
222 return 0;
223 }
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224
225 if (ReadMessages(STDIN_FILENO,Messages) == false)
226 return 0;
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227
228 // Single mode exits if the message queue is empty
229 if (Single == true && Messages.empty() == true)
230 return 0;
231
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232 string Message = Messages.front();
233 Messages.erase(Messages.begin());
234
235 // Fetch the message number
236 char *End;
237 int Number = strtol(Message.c_str(),&End,10);
238 if (End == Message.c_str())
239 {
240 cerr << "Malformed message!" << endl;
241 return 100;
242 }
243
244 switch (Number)
245 {
246 case 601:
247 if (Configuration(Message) == false)
248 return 100;
249 break;
250
251 case 600:
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252 {
253 FetchItem *Tmp = new FetchItem;
254
255 Tmp->Uri = LookupTag(Message,"URI");
256 Tmp->DestFile = LookupTag(Message,"FileName");
257 StrToTime(LookupTag(Message,"Last-Modified"),Tmp->LastModified);
258 Tmp->Next = 0;
259
260 // Append it to the list
261 FetchItem **I = &Queue;
262 for (; *I != 0 && (*I)->Next != 0; I = &(*I)->Next);
263 *I = Tmp;
264
265 if (Fetch(Tmp) == false)
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266 Fail();
267 break;
268 }
269 }
270 }
271
272 return 0;
273}
274 /*}}}*/
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275// AcqMethod::Log - Send a log message /*{{{*/
276// ---------------------------------------------------------------------
277/* */
278void pkgAcqMethod::Log(const char *Format,...)
279{
280 string CurrentURI = "<UNKNOWN>";
281 if (Queue != 0)
282 CurrentURI = Queue->Uri;
283
284 va_list args;
285 va_start(args,Format);
286
287 // sprintf the description
288 char S[1024];
289 unsigned int Len = snprintf(S,sizeof(S),"101 Log\nURI: %s\n"
290 "Message: ",CurrentURI.c_str());
291
292 vsnprintf(S+Len,sizeof(S)-Len,Format,args);
293 strcat(S,"\n\n");
294
295 if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
296 exit(100);
297}
298 /*}}}*/
299// AcqMethod::Status - Send a status message /*{{{*/
300// ---------------------------------------------------------------------
301/* */
302void pkgAcqMethod::Status(const char *Format,...)
303{
304 string CurrentURI = "<UNKNOWN>";
305 if (Queue != 0)
306 CurrentURI = Queue->Uri;
307
308 va_list args;
309 va_start(args,Format);
310
311 // sprintf the description
312 char S[1024];
313 unsigned int Len = snprintf(S,sizeof(S),"101 Log\nURI: %s\n"
314 "Message: ",CurrentURI.c_str());
315
316 vsnprintf(S+Len,sizeof(S)-Len,Format,args);
317 strcat(S,"\n\n");
318
319 if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
320 exit(100);
321}
322 /*}}}*/
323
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324// AcqMethod::FetchResult::FetchResult - Constructor /*{{{*/
325// ---------------------------------------------------------------------
326/* */
327pkgAcqMethod::FetchResult::FetchResult() : LastModified(0),
328 IMSHit(false), Size(0)
329{
330}
331 /*}}}*/
332