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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#define _GNU_SOURCE
#include <getopt.h>
#include <wait.h>
#include <fstream.h>
#include <apt-pkg/init.h>
#if APT_PKG_MAJOR >= 3
#define APT_COMPATIBILITY 986
#include <apt-pkg/debversion.h>
#endif
#include <apt-pkg/pkgcache.h>
#include <apt-pkg/configuration.h>
#include <apt-pkg/progress.h>
#include <apt-pkg/sourcelist.h>
#include <apt-pkg/pkgcachegen.h>
#include <apt-pkg/version.h>
#include "debfile.h"
#define TMPDIR "/var/lib/debconf/"
#define STR(x) (x ? x : "")
//#define TMPDIR "tmp/"
void help(void)
{
fprintf(stderr, "apt-extracttemplates deb [deb]\n");
exit(0);
}
char *writefile(const char *prefix, const char *data)
{
char fn[512];
static int i;
snprintf(fn, sizeof(fn), "%s%s.%u%d", TMPDIR, prefix, getpid(), i++);
if (data == NULL) data = "";
ofstream ofs(fn);
if (!ofs) return NULL;
ofs << data;
ofs.close();
return strdup(fn);
}
void writeconfig(const DebFile &file)
{
char *templatefile = writefile("template", file.Template);
char *configscript = writefile("config", file.Config);
if (templatefile == 0 || configscript == 0)
{
fprintf(stderr, "Cannot write config script or templates\n");
return;
}
printf("%s %s %s %s\n",
STR(file.Package), // Package
STR(file.Version), // Version
templatefile, // Template
configscript // Config
);
}
void init(MMap *&Map, pkgCache *&Cache)
{
// Initialize the apt cache
if (pkgInitConfig(*_config) == false || pkgInitSystem(*_config, _system) == false)
{
fprintf(stderr, "Cannot initialize apt cache\n");
return;
}
pkgSourceList List;
List.ReadMainList();
OpProgress Prog;
pkgMakeStatusCache(List,Prog,&Map,true);
Cache = new pkgCache(Map);
}
int main(int argc, char **argv, char **env)
{
int idx = 0;
char **debs = 0;
int numdebs = 0;
MMap *Map = 0;
const char *debconfver = NULL;
init(Map, DebFile::Cache);
if (Map == 0 || DebFile::Cache == 0)
{
fprintf(stderr, "Cannot initialize APT cache\n");
return 1;
}
debconfver = DebFile::GetInstalledVer("debconf");
if (debconfver == NULL)
{
fprintf(stderr, "Cannot get debconf version. Is debconf installed?\n");
return 1;
}
numdebs = argc - 1;
debs = new char *[numdebs];
memcpy(debs, &argv[1], sizeof(char *) * numdebs);
if (numdebs < 1)
{
fprintf(stderr, "apt-extracttemplates foo.deb [...]\n");
return 0;
}
for (idx = 0; idx < numdebs; idx++)
{
DebFile file(debs[idx]);
if (file.Go() == false)
{
fprintf(stderr, "Cannot read %s\n", debs[idx]);
continue;
}
if (file.Template != 0 && file.ParseInfo() == true)
{
if (file.DepVer != 0 && *file.DepVer != 0 &&
pkgCheckDep(file.DepVer,
debconfver, file.DepOp) == false)
continue;
if (file.PreDepVer != 0 && *file.PreDepVer != 0 &&
pkgCheckDep(file.PreDepVer,
debconfver, file.PreDepOp) == false)
continue;
writeconfig(file);
}
}
delete Map;
delete DebFile::Cache;
return 0;
}
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