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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-13 09:59:37 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-13 09:59:37 +0000
commit76e2632459410dec81337edb6a9fee33c9a660f3 (patch)
treea73345df208eede4a4daad340515c9328f34625c /cmdline/apt-helper.cc
parentInitial commit. (diff)
downloadapt-76e2632459410dec81337edb6a9fee33c9a660f3.tar.xz
apt-76e2632459410dec81337edb6a9fee33c9a660f3.zip
Adding upstream version 2.7.12.upstream/2.7.12
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'cmdline/apt-helper.cc')
-rw-r--r--cmdline/apt-helper.cc334
1 files changed, 334 insertions, 0 deletions
diff --git a/cmdline/apt-helper.cc b/cmdline/apt-helper.cc
new file mode 100644
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--- /dev/null
+++ b/cmdline/apt-helper.cc
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+// -*- mode: cpp; mode: fold -*-
+// Description /*{{{*/
+/* #####################################################################
+ apt-helper - cmdline helpers
+ ##################################################################### */
+ /*}}}*/
+// Include Files /*{{{*/
+#include <config.h>
+
+#include <apt-pkg/acquire-item.h>
+#include <apt-pkg/acquire.h>
+#include <apt-pkg/cmndline.h>
+#include <apt-pkg/cachefilter-patterns.h>
+#include <apt-pkg/configuration.h>
+#include <apt-pkg/error.h>
+#include <apt-pkg/fileutl.h>
+#include <apt-pkg/init.h>
+#include <apt-pkg/pkgsystem.h>
+#include <apt-pkg/proxy.h>
+#include <apt-pkg/strutl.h>
+
+#include <apt-pkg/srvrec.h>
+#include <apt-private/acqprogress.h>
+#include <apt-private/private-cmndline.h>
+#include <apt-private/private-download.h>
+#include <apt-private/private-main.h>
+#include <apt-private/private-output.h>
+
+#include <iostream>
+#include <string>
+#include <vector>
+
+#include <cstdlib>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+#include <apti18n.h>
+ /*}}}*/
+
+static bool DoAutoDetectProxy(CommandLine &CmdL) /*{{{*/
+{
+ if (CmdL.FileSize() != 2)
+ return _error->Error(_("Need one URL as argument"));
+ URI ServerURL(CmdL.FileList[1]);
+ if (AutoDetectProxy(ServerURL) == false)
+ return false;
+ std::string SpecificProxy = _config->Find("Acquire::"+ServerURL.Access+"::Proxy::" + ServerURL.Host);
+ ioprintf(std::cout, "Using proxy '%s' for URL '%s'\n",
+ SpecificProxy.c_str(), std::string(ServerURL).c_str());
+
+ return true;
+}
+ /*}}}*/
+static bool DoDownloadFile(CommandLine &CmdL) /*{{{*/
+{
+ if (CmdL.FileSize() <= 2)
+ return _error->Error(_("Must specify at least one pair url/filename"));
+
+ aptAcquireWithTextStatus Fetcher;
+ size_t fileind = 0;
+ std::vector<std::string> targetfiles;
+ while (fileind + 2 <= CmdL.FileSize())
+ {
+ std::string download_uri = CmdL.FileList[fileind + 1];
+ std::string targetfile = CmdL.FileList[fileind + 2];
+ HashStringList hashes;
+
+ fileind += 2;
+
+ // An empty string counts as a hash for compatibility reasons
+ if (CmdL.FileSize() > fileind + 1 && *CmdL.FileList[fileind + 1] == '\0')
+ fileind++;
+
+ /* Let's start looking for hashes */
+ for (auto i = fileind + 1; CmdL.FileSize() > i; i++)
+ {
+ bool isAHash = false;
+
+ for (auto HashP = HashString::SupportedHashes(); *HashP != nullptr; HashP++)
+ {
+ if (APT::String::Startswith(CmdL.FileList[i], *HashP))
+ isAHash = true;
+ }
+
+ if (!isAHash)
+ break;
+
+ hashes.push_back(HashString(CmdL.FileList[i]));
+ fileind++;
+ }
+
+ // we use download_uri as descr and targetfile as short-descr
+ new pkgAcqFile(&Fetcher, download_uri, hashes, 0, download_uri, targetfile,
+ "dest-dir-ignored", targetfile);
+ targetfiles.push_back(targetfile);
+ }
+
+ bool Failed = false;
+ if (AcquireRun(Fetcher, 0, &Failed, NULL) == false || Failed == true)
+ return _error->Error(_("Download Failed"));
+ if (targetfiles.empty() == false)
+ for (std::vector<std::string>::const_iterator f = targetfiles.begin(); f != targetfiles.end(); ++f)
+ if (FileExists(*f) == false)
+ return _error->Error(_("Download Failed"));
+
+ return true;
+}
+ /*}}}*/
+static bool DoSrvLookup(CommandLine &CmdL) /*{{{*/
+{
+ if (CmdL.FileSize() <= 1)
+ return _error->Error("Must specify at least one SRV record");
+
+ for(size_t i = 1; CmdL.FileList[i] != NULL; ++i)
+ {
+ std::vector<SrvRec> srv_records;
+ std::string const name = CmdL.FileList[i];
+ c0out << "# Target\tPriority\tWeight\tPort # for " << name << std::endl;
+ size_t const found = name.find(":");
+ if (found != std::string::npos)
+ {
+ std::string const host = name.substr(0, found);
+ size_t const port = atoi(name.c_str() + found + 1);
+ if(GetSrvRecords(host, port, srv_records) == false)
+ _error->Error(_("GetSrvRec failed for %s"), name.c_str());
+ }
+ else if(GetSrvRecords(name, srv_records) == false)
+ _error->Error(_("GetSrvRec failed for %s"), name.c_str());
+
+ for (SrvRec const &I : srv_records)
+ ioprintf(c1out, "%s\t%d\t%d\t%d\n", I.target.c_str(), I.priority, I.weight, I.port);
+ }
+ return true;
+}
+ /*}}}*/
+static const APT::Configuration::Compressor *FindCompressor(std::vector<APT::Configuration::Compressor> const &compressors, std::string const &name) /*{{{*/
+{
+ APT::Configuration::Compressor const * compressor = NULL;
+ for (auto const & c : compressors)
+ {
+ if (compressor != NULL && c.Cost >= compressor->Cost)
+ continue;
+ if (c.Name == name || c.Extension == name || (!c.Extension.empty() && c.Extension.substr(1) == name))
+ compressor = &c;
+ }
+
+ return compressor;
+}
+ /*}}}*/
+static bool DoCatFile(CommandLine &CmdL) /*{{{*/
+{
+ FileFd fd;
+ FileFd out;
+ std::string const compressorName = _config->Find("Apt-Helper::Cat-File::Compress", "");
+
+ if (compressorName.empty() == false)
+ {
+
+ auto const compressors = APT::Configuration::getCompressors();
+ auto const compressor = FindCompressor(compressors, compressorName);
+
+ if (compressor == NULL)
+ return _error->Error("Could not find compressor: %s", compressorName.c_str());
+
+ if (out.OpenDescriptor(STDOUT_FILENO, FileFd::WriteOnly, *compressor) == false)
+ return false;
+ } else
+ {
+ if (out.OpenDescriptor(STDOUT_FILENO, FileFd::WriteOnly) == false)
+ return false;
+ }
+
+ if (CmdL.FileSize() <= 1)
+ {
+ if (fd.OpenDescriptor(STDIN_FILENO, FileFd::ReadOnly) == false)
+ return false;
+ if (CopyFile(fd, out) == false)
+ return false;
+ return true;
+ }
+
+ for(size_t i = 1; CmdL.FileList[i] != NULL; ++i)
+ {
+ std::string const name = CmdL.FileList[i];
+
+ if (name != "-")
+ {
+ if (fd.Open(name, FileFd::ReadOnly, FileFd::Extension) == false)
+ return false;
+ }
+ else
+ {
+ if (fd.OpenDescriptor(STDIN_FILENO, FileFd::ReadOnly) == false)
+ return false;
+ }
+
+ if (CopyFile(fd, out) == false)
+ return false;
+ }
+ return true;
+}
+ /*}}}*/
+
+static pid_t ExecuteProcess(const char *Args[]) /*{{{*/
+{
+ pid_t pid = ExecFork();
+ if (pid == 0)
+ {
+ execvp(Args[0], (char **)Args);
+ _exit(100);
+ }
+ return pid;
+}
+
+static bool ServiceIsActive(const char *service)
+{
+ const char *argv[] = {"systemctl", "is-active", "-q", service, nullptr};
+ pid_t pid = ExecuteProcess(argv);
+ return ExecWait(pid, "systemctl is-active", true);
+}
+
+static bool DoWaitOnline(CommandLine &)
+{
+ // Also add services to After= in .service
+ static const char *WaitingTasks[][6] = {
+ {"systemd-networkd.service", "/lib/systemd/systemd-networkd-wait-online", "-q", "--timeout=30", nullptr},
+ {"NetworkManager.service", "nm-online", "-q", "--timeout", "30", nullptr},
+ {"connman.service", "connmand-wait-online", "--timeout=30", nullptr},
+ };
+
+ for (const char **task : WaitingTasks)
+ {
+ if (ServiceIsActive(task[0]))
+ {
+ pid_t pid = ExecuteProcess(task + 1);
+
+ ExecWait(pid, task[1]);
+ }
+ }
+
+ return _error->PendingError() == false;
+}
+ /*}}}*/
+static bool DropPrivsAndRun(CommandLine &CmdL) /*{{{*/
+{
+ if (CmdL.FileSize() < 2)
+ return _error->Error("No command given to run without privileges");
+ if (DropPrivileges() == false)
+ return _error->Error("Dropping Privileges failed, not executing '%s'", CmdL.FileList[1]);
+
+ std::vector<char const *> Args;
+ Args.reserve(CmdL.FileSize() + 1);
+ for (auto a = CmdL.FileList + 1; *a != nullptr; ++a)
+ Args.push_back(*a);
+ Args.push_back(nullptr);
+ auto const pid = ExecuteProcess(Args.data());
+ return ExecWait(pid, CmdL.FileList[1]);
+}
+ /*}}}*/
+static bool AnalyzePattern(CommandLine &CmdL) /*{{{*/
+{
+ if (CmdL.FileSize() != 2)
+ return _error->Error("Expect one argument, a pattern");
+
+ try
+ {
+ auto top = APT::Internal::PatternTreeParser(CmdL.FileList[1]).parseTop();
+ top->render(std::cout) << "\n";
+ }
+ catch (APT::Internal::PatternTreeParser::Error &e)
+ {
+ std::stringstream ss;
+ ss << "input:" << e.location.start << "-" << e.location.end << ": error: " << e.message << "\n";
+ ss << CmdL.FileList[1] << "\n";
+ for (size_t i = 0; i < e.location.start; i++)
+ ss << " ";
+ for (size_t i = e.location.start; i < e.location.end; i++)
+ ss << "^";
+
+ ss << "\n";
+
+ _error->Error("%s", ss.str().c_str());
+ return false;
+ }
+
+ return true;
+}
+ /*}}}*/
+static bool DoQuoteString(CommandLine &CmdL) /*{{{*/
+{
+ if (CmdL.FileSize() != 3)
+ return _error->Error("Expect two arguments, a string to quote and a string of additional characters to quote");
+ std::cout << QuoteString(CmdL.FileList[1], CmdL.FileList[2]) << '\n';
+ return true;
+}
+ /*}}}*/
+static bool ShowHelp(CommandLine &) /*{{{*/
+{
+ std::cout <<
+ _("Usage: apt-helper [options] command\n"
+ " apt-helper [options] cat-file file ...\n"
+ " apt-helper [options] download-file uri target-path\n"
+ "\n"
+ "apt-helper bundles a variety of commands for shell scripts to use\n"
+ "e.g. the same proxy configuration or acquire system as APT would.\n");
+ return true;
+}
+ /*}}}*/
+static std::vector<aptDispatchWithHelp> GetCommands() /*{{{*/
+{
+ return {
+ {"download-file", &DoDownloadFile, _("download the given uri to the target-path")},
+ {"srv-lookup", &DoSrvLookup, _("lookup a SRV record (e.g. _http._tcp.ftp.debian.org)")},
+ {"cat-file", &DoCatFile, _("concatenate files, with automatic decompression")},
+ {"auto-detect-proxy", &DoAutoDetectProxy, _("detect proxy using apt.conf")},
+ {"wait-online", &DoWaitOnline, _("wait for system to be online")},
+ {"drop-privs", &DropPrivsAndRun, _("drop privileges before running given command")},
+ {"analyze-pattern", &AnalyzePattern, _("analyse a pattern")},
+ {"analyse-pattern", &AnalyzePattern, nullptr},
+ {"quote-string", &DoQuoteString, nullptr},
+ {nullptr, nullptr, nullptr}};
+}
+ /*}}}*/
+int main(int argc,const char *argv[]) /*{{{*/
+{
+ CommandLine CmdL;
+ auto const Cmds = ParseCommandLine(CmdL, APT_CMD::APT_HELPER, &_config, &_system, argc, argv, &ShowHelp, &GetCommands);
+
+ InitOutput();
+
+ return DispatchCommandLine(CmdL, Cmds);
+}
+ /*}}}*/