icedb::os_functions Namespace Reference

Namespaces
	unix
	vars
	win

Functions
bool	populateOSstrings ()
bool	pidExists (int pid)
int	getPID ()
int	getPPID (int pid)
void	libEntry (int argc, char **argv)
void	waitOnExit (bool val)
bool	waitOnExit ()
const char *	getUserName ()
const char *	getHostName ()
const char *	getAppConfigDir ()
const char *	getHomeDir ()
const char *	getLibDir ()
const char *	getAppDir ()
const char *	getPluginDir ()
const char *	getLibPath ()
const char *	getAppPath ()
const char *	getCWD ()

Function Documentation

getAppConfigDir()

DL_ICEDB const char * icedb::os_functions::getAppConfigDir

(

)

See also

ICEDB_getAppConfigDir

Definition at line 946 of file os_functions.cpp.

References ICEDB_getAppConfigDir().

{ return ICEDB_getAppConfigDir(); }

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getAppDir()

DL_ICEDB const char * icedb::os_functions::getAppDir

(

)

Definition at line 949 of file os_functions.cpp.

References icedb::os_functions::vars::appDir, and ICEDB_getAppDirI().

{ ICEDB_getAppDirI(); return appDir.c_str(); }

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getAppPath()

DL_ICEDB const char * icedb::os_functions::getAppPath

(

)

Definition at line 952 of file os_functions.cpp.

References icedb::os_functions::vars::appPath, and ICEDB_getAppDirI().

{ ICEDB_getAppDirI(); return appPath.c_str(); }

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getCWD()

DL_ICEDB const char * icedb::os_functions::getCWD

(

)

Definition at line 953 of file os_functions.cpp.

References icedb::os_functions::vars::CWD, and ICEDB_getCWDI().

{ ICEDB_getCWDI(); return CWD.c_str(); }

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getHomeDir()

DL_ICEDB const char * icedb::os_functions::getHomeDir

(

)

See also

ICEDB_getHomeDir

Definition at line 947 of file os_functions.cpp.

References ICEDB_getHomeDir().

{ return ICEDB_getHomeDir(); }

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getHostName()

DL_ICEDB const char * icedb::os_functions::getHostName

(

)

See also

ICEDB_getHostName

Definition at line 945 of file os_functions.cpp.

References ICEDB_getHostName().

{ return ICEDB_getHostName(); }

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getLibDir()

DL_ICEDB const char * icedb::os_functions::getLibDir

(

)

Definition at line 948 of file os_functions.cpp.

References ICEDB_getLibDirI(), and icedb::os_functions::vars::libDir.

{ ICEDB_getLibDirI(); return libDir.c_str(); }

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getLibPath()

DL_ICEDB const char * icedb::os_functions::getLibPath

(

)

Definition at line 951 of file os_functions.cpp.

References ICEDB_getLibDirI(), and icedb::os_functions::vars::libPath.

{ ICEDB_getLibDirI(); return libPath.c_str(); }

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getPID()

DL_ICEDB int icedb::os_functions::getPID

(

)

See also

ICEDB_getPID

Definition at line 939 of file os_functions.cpp.

References ICEDB_getPID().

Referenced by ICEDB_enumModules().

{ return ICEDB_getPID(); }

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getPluginDir()

DL_ICEDB const char * icedb::os_functions::getPluginDir

(

)

Definition at line 950 of file os_functions.cpp.

References ICEDB_getPluginDirI(), and icedb::os_functions::vars::pluginDir.

{ ICEDB_getPluginDirI(); return pluginDir.c_str(); }

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getPPID()

DL_ICEDB int icedb::os_functions::getPPID

(

int

pid

)

See also

ICEDB_getPPID

Definition at line 940 of file os_functions.cpp.

References ICEDB_getPPID().

{ return ICEDB_getPPID(pid); }

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getUserName()

DL_ICEDB const char * icedb::os_functions::getUserName

(

)

See also

ICEDB_getUserName

Definition at line 944 of file os_functions.cpp.

References ICEDB_getUserName().

{ return ICEDB_getUserName(); }

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libEntry()

DL_ICEDB void icedb::os_functions::libEntry	(	int	argc,
		char **	argv
	)

See also

ICEDB_libEntry

Definition at line 941 of file os_functions.cpp.

References ICEDB_libEntry().

{ ICEDB_libEntry(argc, argv); }

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pidExists()

DL_ICEDB bool icedb::os_functions::pidExists

(

int

pid

)

See also

ICEDB_pidExists

Definition at line 938 of file os_functions.cpp.

References ICEDB_pidExists().

{ bool res = false; ICEDB_pidExists(pid, res); return res; }

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populateOSstrings()

bool icedb::os_functions::populateOSstrings

(

)

Definition at line 265 of file os_functions.cpp.

References icedb::os_functions::vars::appConfigDir, icedb::os_functions::vars::homeDir, icedb::os_functions::vars::hostname, ICEDB_error_context_add_string2, ICEDB_error_context_create, ICEDB_error_getOSname, ICEDB_ERRORCODES_OS, ICEDB_ERRORCODES_UNIMPLEMENTED, ICEDB_free(), ICEDB_malloc(), icedb::os_functions::vars::m_sys_names, and icedb::os_functions::vars::username.

Referenced by ICEDB_getAppConfigDir(), ICEDB_getHomeDir(), ICEDB_getHostName(), and ICEDB_getUserName().

                                 {
            using namespace icedb::os_functions::vars;
            std::lock_guard<std::mutex> lock(m_sys_names);
            // Because of the mutex lock, all of the getlogin functions are safe.
            if (username.size()) return true;

            // Username
#if defined(ICEDB_OS_WINDOWS)
            BOOL res = false;
            const DWORD clen = 256;
            DWORD len = clen;
            TCHAR hname[clen];
            res = GetUserName(hname, &len);
            if (res) username = win::convertStr(hname);
            else goto funcErrorOS;

            res = GetComputerName(hname, &len);
            if (res) hostname = win::convertStr(hname);
            else goto funcErrorOS;

            HRESULT resl = false;
            wchar_t* happname = nullptr;
            res = SHGetKnownFolderPath(FOLDERID_LocalAppData, 0, NULL, &happname);
            if (resl == S_OK) appConfigDir = win::convertStr(happname);
            else goto funcErrorOS;

            wchar_t* hhomename = nullptr;
            res = SHGetKnownFolderPath(FOLDERID_Profile, 0, NULL, &hhomename);
            if (resl == S_OK) homeDir = win::convertStr(hhomename);
            else goto funcErrorOS;

            goto done;
            funcErrorOS:
                DWORD errn = GetLastError();
                auto err = ICEDB_error_context_create(ICEDB_ERRORCODES_OS);
                const char* osname = ICEDB_error_getOSname();
                ICEDB_error_context_add_string2(err, "OS_id", osname);
                char errns[50];
                snprintf(errns, 50, "%d", errn);
                ICEDB_error_context_add_string2(err, "OS_errno", errns);
                if (!username.size()) ICEDB_error_context_add_string2(err, "OS_func", "GetUserName");
                else if (!hostname.size()) ICEDB_error_context_add_string2(err, "OS_func", "GetComputerName");
                else if (!appConfigDir.size()) ICEDB_error_context_add_string2(err, "OS_func", "SHGetKnownFolderPath app config dir");
                else if (!homeDir.size()) ICEDB_error_context_add_string2(err, "OS_func", "SHGetKnownFolderPath profile dir");
            done:
                if (happname) CoTaskMemFree(static_cast<void*>(happname));
                if (hhomename) CoTaskMemFree(static_cast<void*>(hhomename));

#elif defined(__unix__) || defined(__APPLE__)
            const size_t len = 65536;
            char hname[len];
            int res = 0;
            char* envres = NULL;

            if ((envres = getenv("USER"))) username = std::string(envres);
            else if ((envres = getenv("LOGNAME"))) username = std::string(envres);
            if (!username.size()) {
#if defined(_POSIX_C_SOURCE)
#if _POSIX_C_SOURCE >= 199506L
                res = getlogin_r(hname, len); // getlogin and getlogin_r have problems. Avoid.
                if (!res) username = std::string(hname);
#else
                if ((envres = getlogin())) username = std::string(envres);
#endif
                // Has getpwuid_r
                if (!username.size()) {
                    uid_t uid = geteuid();
                    struct passwd* ps = (passwd*) ICEDB_malloc(sizeof(passwd));
                    struct passwd** pres; // A pointer to the result (or NULL on failure) is stored here.
                    res = getpwuid_r(uid, ps, hname, len, pres);
                    if ((res == 0) && pres) {
                        username = std::string(ps->pw_name);
                    }

                    ICEDB_free(ps);
                }
#else
                // May have getpwuid
                uid_t uid = geteuid();
                struct passwd* ps = getpwuid(uid);
                if (ps) username = std::string(ps->pw_name);
#endif
            }
            
            // Hostname
            res = gethostname(hname, len); // May be empty
            if (hname[0]) hostname = std::string(hname);

            // Home dir
            if ((envres = getenv("HOME"))) homeDir = std::string(envres);
            if (!homeDir.size())
            {
#if defined(_POSIX_C_SOURCE) || defined(_BSD_SOURCE) || defined(_SVID_SOURCE)
                struct passwd pw, *pwp;
                int res = getpwuid_r(geteuid(), &pw, hname, len, &pwp);
                if (res == 0) {
                    const char *homedir = pw.pw_dir;
                    homeDir = std::string(homedir);
                }
#else
                struct passwd* ps = getpwuid(geteuid());
                if (ps) homeDir = std::string(ps->pw_dir);
#endif
            }
            if (!homeDir.size()) goto funcErrorOS;
                
            // App config dir
            if ((envres = getenv("XDG_CONFIG_HOME"))) appConfigDir = std::string(envres);
            else {
                appConfigDir = homeDir;
                appConfigDir.append("/.config");
            }

            goto done;
        funcErrorOS:
            {
                auto err = ICEDB_error_context_create(ICEDB_ERRORCODES_OS);
                const char* osname = ICEDB_error_getOSname();
                ICEDB_error_context_add_string2(err, "OS_id", osname);
                if (!username.size()) ICEDB_error_context_add_string2(err, "OS_func", "getlogin_r");
                else if (!hostname.size()) ICEDB_error_context_add_string2(err, "OS_func", "gethostname");
                else if (!appConfigDir.size()) ICEDB_error_context_add_string2(err, "OS_func", "getEnviron app config dir");
                else if (!homeDir.size()) ICEDB_error_context_add_string2(err, "OS_func", "getEnviron profile dir");
            }
        done:

#endif
            auto ctxerr = ICEDB_error_context_create(ICEDB_ERRORCODES_UNIMPLEMENTED);
            const char* cosname = ICEDB_error_getOSname();
            ICEDB_error_context_add_string2(ctxerr, "OS_id", cosname);
            return false;
        }

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waitOnExit() [1/2]

DL_ICEDB void icedb::os_functions::waitOnExit

(

bool

val

)

See also

ICEDB_waitOnExitSet

Definition at line 942 of file os_functions.cpp.

References ICEDB_waitOnExitSet().

{ ICEDB_waitOnExitSet(val); }

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waitOnExit() [2/2]

DL_ICEDB bool icedb::os_functions::waitOnExit

(

)

See also

ICEDB_waitOnExitGet

Definition at line 943 of file os_functions.cpp.

References ICEDB_waitOnExitGet().

{ return ICEDB_waitOnExitGet(); }

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