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// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
/* #####################################################################
dummy solver to get quickly a scenario file out of APT
##################################################################### */
/*}}}*/
// Include Files /*{{{*/
#include <apt-pkg/edsp.h>
#include <string.h>
#include <unistd.h>
#include <cstdio>
#include <iostream>
#include <sstream>
#include <config.h>
/*}}}*/
// ShowHelp - Show a help screen /*{{{*/
// ---------------------------------------------------------------------
/* */
static bool ShowHelp() {
ioprintf(std::cout, "%s %s (%s)\n", PACKAGE, PACKAGE_VERSION, COMMON_ARCH);
std::cout <<
"Usage: apt-dump-solver\n"
"\n"
"apt-dump-solver is a dummy solver who just dumps its input to the\n"
"file specified in the environment variable APT_EDSP_DUMP_FILENAME and\n"
"exists with a proper EDSP error.\n"
"\n"
" This dump has lost Super Cow Powers.\n";
return true;
}
/*}}}*/
int main(int argc,const char *argv[]) /*{{{*/
{
// we really don't need anything
DropPrivileges();
if (argc > 1 && (strcmp(argv[1], "--help") == 0 || strcmp(argv[1],"-h") == 0 ||
strcmp(argv[1],"-v") == 0 || strcmp(argv[1],"--version") == 0)) {
ShowHelp();
return 0;
}
FileFd stdoutfd;
if (stdoutfd.OpenDescriptor(STDOUT_FILENO, FileFd::WriteOnly | FileFd::BufferedWrite, true) == false)
return 1;
char const * const filename = getenv("APT_EDSP_DUMP_FILENAME");
if (filename == NULL || strlen(filename) == 0)
{
EDSP::WriteError("ERR_NO_FILENAME", "You have to set the environment variable APT_EDSP_DUMP_FILENAME\n"
"to a valid filename to store the dump of EDSP solver input in.\n"
"For example with: export APT_EDSP_DUMP_FILENAME=/tmp/dump.edsp", stdoutfd);
return 0;
}
RemoveFile(argv[0], filename);
FileFd input, output;
if (input.OpenDescriptor(STDIN_FILENO, FileFd::ReadOnly) == false ||
output.Open(filename, FileFd::WriteOnly | FileFd::Create | FileFd::Exclusive, FileFd::Extension, 0600) == false ||
CopyFile(input, output) == false || input.Close() == false || output.Close() == false)
{
std::ostringstream out;
out << "Writing EDSP solver input to file '" << filename << "' failed!\n";
_error->DumpErrors(out);
EDSP::WriteError("ERR_WRITE_ERROR", out.str(), stdoutfd);
return 0;
}
EDSP::WriteError("ERR_JUST_DUMPING", "I am too dumb, i can just dump!\nPlease use one of my friends instead!", stdoutfd);
return 0;
}
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