/usr/include/rostlab/cxxgrp.h is in librostlab3-dev 1.0.20-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | /*
Copyright (C) 2011 Laszlo Kajan, Technical University of Munich, Germany
This file is part of librostlab.
librostlab is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef ROSTLAB_CXXGRP
#define ROSTLAB_CXXGRP 1
#include <boost/format.hpp>
#include <errno.h>
#include <grp.h>
#include <string>
#include <string.h>
#include <sys/types.h>
#include <vector>
#include "rostlab/rostlab_stdexcept.h"
namespace bo = boost;
namespace rostlab {
struct cxx_group
{
std::string gr_name; /* group name */
std::string gr_passwd; /* group password */
gid_t gr_gid; /* group ID */
std::vector<std::string> gr_mem; /* group members */
inline cxx_group(){};
inline cxx_group( const std::string& __gr_name );
inline cxx_group( const std::string& __gr_name, const std::string& __gr_passwd, gid_t __gr_gid, const std::vector<std::string>& __gr_mem ) :
gr_name(__gr_name), gr_passwd(__gr_passwd), gr_gid(__gr_gid), gr_mem(__gr_mem) {};
inline cxx_group( const std::string& __gr_name, const std::string& __gr_passwd, gid_t __gr_gid, char** __gr_mem ) :
gr_name(__gr_name), gr_passwd(__gr_passwd), gr_gid(__gr_gid) { while(*__gr_mem) gr_mem.push_back( *__gr_mem++ ); };
};
class gid_not_found_error : public runtime_error { public: gid_not_found_error( const std::string& what ) : runtime_error(what) {} };
class gname_not_found_error : public runtime_error { public: gname_not_found_error( const std::string& what ) : runtime_error(what) {} };
// namespace functions
inline std::string getgrgid_r( gid_t __gid );
inline std::string getgrgid_r( gid_t __gid, cxx_group& __group );
inline gid_t getgrnam_r( const std::string& __gname );
inline gid_t getgrnam_r( const std::string& __gname, struct cxx_group& __group );
inline cxx_group::cxx_group( const std::string& __gr_name )
{
rostlab::getgrnam_r( __gr_name, *this );
};
inline std::string getgrgid_r( gid_t __gid, cxx_group& __group )
{
struct group gbuf;
struct group *gbufp;
size_t buflen = sysconf( _SC_GETGR_R_SIZE_MAX );
char* buf = static_cast<char *>( malloc(buflen) ); if(!buf) throw runtime_error( bo::str( bo::format("failed to allocate %d bytes") % buflen ) );
try{
int _errno;
do {
_errno = ::getgrgid_r( __gid, &gbuf, buf, buflen, &gbufp );
if( _errno == ERANGE ) // too small buffer
{
buflen *= 2;
buf = static_cast<char *>( realloc( buf, buflen ) ); if(!buf) throw runtime_error( bo::str( bo::format("failed to allocate %d bytes") % buflen ) );
}
else if( _errno ) throw runtime_error( bo::str( bo::format("failed to getgrgid_r '%d': %s") % __gid % strerror( errno ) ) );
} while( _errno );
if( gbufp == NULL ) throw gid_not_found_error( bo::str( bo::format("gid '%d' not found") % __gid ) );
__group = cxx_group( gbuf.gr_name, gbuf.gr_passwd, gbuf.gr_gid, gbuf.gr_mem );
}
catch(...)
{
free(buf);
throw;
}
free(buf); buf = NULL;
return __group.gr_name;
}
inline std::string getgrgid_r( gid_t __gid )
{
struct cxx_group grp;
return getgrgid_r( __gid, grp );
}
inline gid_t getgrnam_r( const std::string& __gname, struct cxx_group& __group )
{
struct group gbuf;
struct group *gbufp;
size_t buflen = sysconf( _SC_GETGR_R_SIZE_MAX );
char* buf = static_cast<char *>( malloc(buflen) ); if(!buf) throw runtime_error( bo::str( bo::format("failed to allocate %d bytes") % buflen ) );
try{
int _errno;
do {
_errno = ::getgrnam_r( __gname.c_str(), &gbuf, buf, buflen, &gbufp );
if( _errno == ERANGE ) // too small buffer
{
buflen *= 2;
buf = static_cast<char *>( realloc( buf, buflen ) ); if(!buf) throw runtime_error( bo::str( bo::format("failed to allocate %d bytes") % buflen ) );
}
else if( _errno ) throw runtime_error( bo::str( bo::format("failed to getgrnam_r '%s': %s") % __gname % strerror( errno ) ) );
} while( _errno );
if( gbufp == NULL ) throw gname_not_found_error( bo::str( bo::format("gname '%s' not found") % __gname ) );
__group = cxx_group( gbuf.gr_name, gbuf.gr_passwd, gbuf.gr_gid, gbuf.gr_mem );
}
catch(...)
{
free(buf);
throw;
}
free(buf); buf = NULL;
return gbuf.gr_gid;
}
inline gid_t getgrnam_r( const std::string& __gname )
{
struct cxx_group grp;
return getgrnam_r( __gname, grp );
}
}; // namespace rostlab
#endif // ROSTLAB_CXXGRP
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