1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
|
// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
/* #####################################################################
cover around the internal solver to be able to run it like an external
##################################################################### */
/*}}}*/
// Include Files /*{{{*/
#include <config.h>
#include <apt-pkg/algorithms.h>
#include <apt-pkg/cachefile.h>
#include <apt-pkg/cacheset.h>
#include <apt-pkg/cmndline.h>
#include <apt-pkg/configuration.h>
#include <apt-pkg/depcache.h>
#include <apt-pkg/edsp.h>
#include <apt-pkg/error.h>
#include <apt-pkg/fileutl.h>
#include <apt-pkg/init.h>
#include <apt-pkg/pkgcache.h>
#include <apt-pkg/pkgsystem.h>
#include <apt-pkg/strutl.h>
#include <apt-pkg/upgrade.h>
#include <apt-private/private-cmndline.h>
#include <apt-private/private-main.h>
#include <apt-private/private-output.h>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <iostream>
#include <list>
#include <sstream>
#include <string>
#include <libgen.h>
#include <unistd.h>
#include <apti18n.h>
/*}}}*/
static bool ShowHelp(CommandLine &) /*{{{*/
{
std::cout <<
_("Usage: apt-internal-solver\n"
"\n"
"apt-internal-solver is an interface to use the current internal\n"
"resolver for the APT family like an external one, for debugging or\n"
"the like.\n");
return true;
}
/*}}}*/
[[noreturn]] static void DIE(std::string const &message) { /*{{{*/
std::cerr << "ERROR: " << message << std::endl;
_error->DumpErrors(std::cerr);
exit(EXIT_FAILURE);
}
/*}}}*/
static std::vector<aptDispatchWithHelp> GetCommands() /*{{{*/
{
return {};
}
/*}}}*/
static bool WriteSolution(pkgDepCache &Cache, FileFd &output) /*{{{*/
{
bool Okay = output.Failed() == false;
for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); Pkg.end() == false && likely(Okay); ++Pkg)
{
if (Cache[Pkg].Delete() == true)
Okay &= EDSP::WriteSolutionStanza(output, "Remove", Pkg.CurrentVer());
else if (Cache[Pkg].NewInstall() == true || Cache[Pkg].Upgrade() == true)
Okay &= EDSP::WriteSolutionStanza(output, "Install", Cache.GetCandidateVersion(Pkg));
else if (Cache[Pkg].Garbage == true)
Okay &= EDSP::WriteSolutionStanza(output, "Autoremove", Pkg.CurrentVer());
}
return Okay;
}
/*}}}*/
int main(int argc,const char *argv[]) /*{{{*/
{
// we really don't need anything
DropPrivileges();
CommandLine CmdL;
ParseCommandLine(CmdL, APT_CMD::APT_INTERNAL_SOLVER, &_config, NULL, argc, argv, &ShowHelp, &GetCommands);
if (CmdL.FileList[0] != 0 && strcmp(CmdL.FileList[0], "scenario") == 0)
{
if (pkgInitSystem(*_config,_system) == false) {
std::cerr << "System could not be initialized!" << std::endl;
return 1;
}
pkgCacheFile CacheFile;
CacheFile.Open(NULL, false);
APT::PackageSet pkgset = APT::PackageSet::FromCommandLine(CacheFile, CmdL.FileList + 1);
FileFd output;
if (output.OpenDescriptor(STDOUT_FILENO, FileFd::WriteOnly | FileFd::BufferedWrite, true) == false)
return 2;
if (pkgset.empty() == true)
EDSP::WriteScenario(CacheFile, output);
else
{
std::vector<bool> pkgvec(CacheFile->Head().PackageCount, false);
for (auto const &p: pkgset)
pkgvec[p->ID] = true;
EDSP::WriteLimitedScenario(CacheFile, output, pkgvec);
}
output.Close();
_error->DumpErrors(std::cerr);
return 0;
}
// Deal with stdout not being a tty
if (!isatty(STDOUT_FILENO) && _config->FindI("quiet", -1) == -1)
_config->Set("quiet","1");
if (_config->FindI("quiet", 0) < 1)
_config->Set("Debug::EDSP::WriteSolution", true);
_config->Set("APT::System", "Debian APT solver interface");
std::string self = argv[0];
if (strcmp(basename(self.data()), "solver3") == 0)
_config->Set("APT::Solver", "3.0");
else if (_config->Find("APT::Solver") != "3.0")
_config->Set("APT::Solver", "internal");
_config->Set("edsp::scenario", "/nonexistent/stdin");
_config->Clear("Dir::Log");
FileFd output;
if (output.OpenDescriptor(STDOUT_FILENO, FileFd::WriteOnly | FileFd::BufferedWrite, true) == false)
DIE("stdout couldn't be opened");
int const input = STDIN_FILENO;
SetNonBlock(input, false);
EDSP::WriteProgress(0, "Start up solver…", output);
if (pkgInitSystem(*_config,_system) == false)
DIE("System could not be initialized!");
EDSP::WriteProgress(1, "Read request…", output);
if (WaitFd(input, false, 5) == false)
DIE("WAIT timed out in the resolver");
std::list<std::string> install, remove;
unsigned int flags;
if (EDSP::ReadRequest(input, install, remove, flags) == false)
DIE("Parsing the request failed!");
EDSP::WriteProgress(5, "Read scenario…", output);
pkgCacheFile CacheFile;
CacheFile.InhibitActionGroups(true);
if (CacheFile.Open(NULL, false) == false)
DIE("Failed to open CacheFile!");
EDSP::WriteProgress(50, "Apply request on scenario…", output);
if (EDSP::ApplyRequest(install, remove, CacheFile) == false)
DIE("Failed to apply request to depcache!");
pkgProblemResolver Fix(CacheFile);
for (std::list<std::string>::const_iterator i = remove.begin();
i != remove.end(); ++i) {
pkgCache::PkgIterator P = CacheFile->FindPkg(*i);
Fix.Clear(P);
Fix.Protect(P);
Fix.Remove(P);
}
for (std::list<std::string>::const_iterator i = install.begin();
i != install.end(); ++i) {
pkgCache::PkgIterator P = CacheFile->FindPkg(*i);
Fix.Clear(P);
Fix.Protect(P);
}
for (std::list<std::string>::const_iterator i = install.begin();
i != install.end(); ++i)
CacheFile->MarkInstall(CacheFile->FindPkg(*i), true);
EDSP::WriteProgress(60, "Call problemresolver on current scenario…", output);
std::string failure;
if (flags & EDSP::Request::UPGRADE_ALL) {
int upgrade_flags = APT::Upgrade::ALLOW_EVERYTHING;
if (flags & EDSP::Request::FORBID_NEW_INSTALL)
upgrade_flags |= APT::Upgrade::FORBID_INSTALL_NEW_PACKAGES;
if (flags & EDSP::Request::FORBID_REMOVE)
upgrade_flags |= APT::Upgrade::FORBID_REMOVE_PACKAGES;
if (APT::Upgrade::Upgrade(CacheFile, upgrade_flags))
;
else if (upgrade_flags == APT::Upgrade::ALLOW_EVERYTHING)
failure = "ERR_UNSOLVABLE_FULL_UPGRADE";
else
failure = "ERR_UNSOLVABLE_UPGRADE";
} else if (Fix.Resolve() == false)
failure = "ERR_UNSOLVABLE";
if (failure.empty() == false) {
std::ostringstream broken;
ShowBroken(broken, CacheFile, false);
EDSP::WriteError(failure.c_str(), broken.str(), output);
return 0;
}
EDSP::WriteProgress(95, "Write solution…", output);
CacheFile->MarkAndSweep();
if (WriteSolution(CacheFile, output) == false)
DIE("Failed to output the solution!");
EDSP::WriteProgress(100, "Done", output);
return DispatchCommandLine(CmdL, {});
}
/*}}}*/
|
