libi2ncommon: (gerd) initial submission, not in use yet

[libi2ncommon] / src / filefunc.cpp

/***************************************************************************
                          escape.cpp  -  escaping of strings
                             -------------------
    begin                : Sun Nov 14 1999
    copyright            : (C) 1999 by Intra2net AG
    email                : info@intra2net.com
 ***************************************************************************/

#include <string>
#include <iostream>

#include <sys/types.h>
#include <sys/stat.h>
#include <pwd.h>
#include <grp.h>
#include <unistd.h>

#include <filefunc.hxx>

using namespace std;

long fsize (const string &name)
{
    long iReturn = -1;
    
    struct stat statbuff;
    
    if (lstat(name.c_str(), &statbuff) < 0)
        return -1;

    if (!S_ISREG(statbuff.st_mode))
        return -1;
    
    iReturn=statbuff.st_size;

    return iReturn;
}

string load_file(const string &name)
{
    FILE *f;
    string s;

    if (name.find ("..") != string::npos)
        return ("can't load file (..): " + name);

    f=::fopen(name.c_str(),"rb");
    if (!f)
    {
        return ("");
    }

    ::fseek(f,0,SEEK_END);
    int size=::ftell(f);
    ::fseek(f,0,SEEK_SET);
    char *c=new char[size+1];
    ::fread(c,1,size,f);
    s.assign(c,size);
    delete[] c;
    ::fclose (f);

    return s;
}

bool chown(const char* file,const char* owner, const char* group)
{
    struct passwd *p;
    struct group *g;
    uid_t uid;
    gid_t gid;

    p = getpwnam(owner);
    if (p == NULL)
        return false;
    uid=p->pw_uid;

    g = getgrnam(group);
    if (g == NULL)
        return false;
    gid=g->gr_gid;

    if (!::chown(file,uid,gid))
        return true;
    else
        return false;
}