void env_init(const struct config_paths_t *paths /* or NULL */)
{
/*
env_read_only variables can not be altered directly by the user
*/
const wchar_t * const ro_keys[] =
{
L"status",
L"history",
L"version",
L"_",
L"LINES",
L"COLUMNS",
L"PWD",
L"SHLVL",
L"FISH_VERSION",
};
for (size_t i=0; i < sizeof ro_keys / sizeof *ro_keys; i++)
{
env_read_only.insert(ro_keys[i]);
}
/*
HOME and USER should be writeable by root, since this can be a
convenient way to install software.
*/
if (getuid() != 0)
{
env_read_only.insert(L"HOME");
env_read_only.insert(L"USER");
}
/*
Names of all dynamically calculated variables
*/
env_electric.insert(L"history");
env_electric.insert(L"status");
env_electric.insert(L"umask");
top = new env_node_t;
global_env = top;
global = &top->env;
/*
Now the environemnt variable handling is set up, the next step
is to insert valid data
*/
/*
Import environment variables
*/
for (char **p = (environ ? environ : __environ); p && *p; p++)
{
const wcstring key_and_val = str2wcstring(*p); //like foo=bar
size_t eql = key_and_val.find(L'=');
if (eql == wcstring::npos)
{
// no equals found
env_set(key_and_val, L"", ENV_EXPORT);
}
else
{
wcstring key = key_and_val.substr(0, eql);
wcstring val = key_and_val.substr(eql + 1);
if (variable_can_be_array(val))
{
std::replace(val.begin(), val.end(), L':', ARRAY_SEP);
}
env_set(key, val.c_str(), ENV_EXPORT | ENV_GLOBAL);
}
}
/* Set the given paths in the environment, if we have any */
if (paths != NULL)
{
env_set(FISH_DATADIR_VAR, paths->data.c_str(), ENV_GLOBAL | ENV_EXPORT);
env_set(FISH_SYSCONFDIR_VAR, paths->sysconf.c_str(), ENV_GLOBAL | ENV_EXPORT);
env_set(FISH_HELPDIR_VAR, paths->doc.c_str(), ENV_GLOBAL | ENV_EXPORT);
env_set(FISH_BIN_DIR, paths->bin.c_str(), ENV_GLOBAL | ENV_EXPORT);
}
/*
Set up the PATH variable
*/
setup_path();
/*
Set up the USER variable
*/
const struct passwd *pw = getpwuid(getuid());
if (pw && pw->pw_name)
{
const wcstring uname = str2wcstring(pw->pw_name);
env_set(L"USER", uname.c_str(), ENV_GLOBAL | ENV_EXPORT);
}
/*
Set up the version variables
*/
wcstring version = str2wcstring(FISH_BUILD_VERSION);
env_set(L"version", version.c_str(), ENV_GLOBAL);
env_set(L"FISH_VERSION", version.c_str(), ENV_GLOBAL);
const env_var_t fishd_dir_wstr = env_get_string(L"FISHD_SOCKET_DIR");
const env_var_t user_dir_wstr = env_get_string(L"USER");
wchar_t * fishd_dir = fishd_dir_wstr.missing()?NULL:const_cast<wchar_t*>(fishd_dir_wstr.c_str());
wchar_t * user_dir = user_dir_wstr.missing()?NULL:const_cast<wchar_t*>(user_dir_wstr.c_str());
env_universal_init(fishd_dir , user_dir ,
&start_fishd,
&universal_callback);
/*
Set up SHLVL variable
*/
const env_var_t shlvl_str = env_get_string(L"SHLVL");
wcstring nshlvl_str = L"1";
if (! shlvl_str.missing())
{
long shlvl_i = wcstol(shlvl_str.c_str(), NULL, 10);
if (shlvl_i >= 0)
{
nshlvl_str = to_string<long>(shlvl_i + 1);
}
}
env_set(L"SHLVL", nshlvl_str.c_str(), ENV_GLOBAL | ENV_EXPORT);
/* Set correct defaults for e.g. USER and HOME variables */
env_set_defaults();
/* Set g_log_forks */
env_var_t log_forks = env_get_string(L"fish_log_forks");
g_log_forks = ! log_forks.missing_or_empty() && from_string<bool>(log_forks);
/* Set g_use_posix_spawn. Default to true. */
env_var_t use_posix_spawn = env_get_string(L"fish_use_posix_spawn");
g_use_posix_spawn = (use_posix_spawn.missing_or_empty() ? true : from_string<bool>(use_posix_spawn));
}
/**
Initialize various subsystems. This also closes stdin and replaces
it with a copy of stderr, so the reading of completion strings must
be done before init is called.
*/
static void init( int mangle_descriptors, int out )
{
struct sigaction act;
static struct termios pager_modes;
char *term;
if( mangle_descriptors )
{
/*
Make fd 1 output to screen, and use some other fd for writing
the resulting output back to the caller
*/
int in;
out = dup( 1 );
close(1);
close(0);
/* OK to not use CLO_EXEC here because fish_pager is single threaded */
if( (in = open( ttyname(2), O_RDWR )) != -1 )
{
if( dup2( 2, 1 ) == -1 )
{
debug( 0, _(L"Could not set up output file descriptors for pager") );
exit( 1 );
}
if( dup2( in, 0 ) == -1 )
{
debug( 0, _(L"Could not set up input file descriptors for pager") );
exit( 1 );
}
}
else
{
debug( 0, _(L"Could not open tty for pager") );
exit( 1 );
}
}
if( !(out_file = fdopen( out, "w" )) )
{
debug( 0, _(L"Could not initialize result pipe" ) );
exit( 1 );
}
env_universal_init( 0, 0, 0, 0);
input_common_init( &interrupt_handler );
output_set_writer( &pager_buffered_writer );
sigemptyset( & act.sa_mask );
act.sa_flags=0;
act.sa_handler=SIG_DFL;
act.sa_flags = 0;
act.sa_handler= &handle_winch;
if( sigaction( SIGWINCH, &act, 0 ) )
{
wperror( L"sigaction" );
exit(1);
}
handle_winch( 0 ); /* Set handler for window change events */
tcgetattr(0,&pager_modes); /* get the current terminal modes */
memcpy( &saved_modes,
&pager_modes,
sizeof(saved_modes)); /* save a copy so we can reset the terminal later */
pager_modes.c_lflag &= ~ICANON; /* turn off canonical mode */
pager_modes.c_lflag &= ~ECHO; /* turn off echo mode */
pager_modes.c_cc[VMIN]=1;
pager_modes.c_cc[VTIME]=0;
/*
*/
if( tcsetattr(0,TCSANOW,&pager_modes)) /* set the new modes */
{
wperror(L"tcsetattr");
exit(1);
}
if( setupterm( 0, STDOUT_FILENO, 0) == ERR )
{
debug( 0, _(L"Could not set up terminal") );
exit(1);
}
term = getenv("TERM");
if( term )
{
wchar_t *wterm = str2wcs(term);
output_set_term( wterm );
free( wterm );
}
/* Infer term256 support */
char *fish_term256 = getenv("fish_term256");
bool support_term256;
if (fish_term256) {
support_term256 = from_string<bool>(fish_term256);
} else {
support_term256 = term && strstr(term, "256color");
}
output_set_supports_term256(support_term256);
}
void env_init(const struct config_paths_t *paths /* or NULL */)
{
char **p;
struct passwd *pw;
wchar_t *uname;
wchar_t *version;
/*
env_read_only variables can not be altered directly by the user
*/
const wchar_t * const ro_keys[] = {
L"status",
L"history",
L"version",
L"_",
L"LINES",
L"COLUMNS",
L"PWD",
L"SHLVL",
};
for (size_t i=0; i < sizeof ro_keys / sizeof *ro_keys; i++) {
env_read_only.insert(ro_keys[i]);
}
/*
HOME and USER should be writeable by root, since this can be a
convenient way to install software.
*/
if( getuid() != 0 )
{
env_read_only.insert(L"HOME");
env_read_only.insert(L"USER");
}
/*
Names of all dynamically calculated variables
*/
env_electric.insert(L"history");
env_electric.insert(L"status");
env_electric.insert(L"umask");
top = new env_node_t;
global_env = top;
global = &top->env;
/*
Now the environemnt variable handling is set up, the next step
is to insert valid data
*/
/*
Import environment variables
*/
for( p=environ?environ:__environ; p && *p; p++ )
{
wchar_t *key, *val;
key = str2wcs(*p);
if( !key )
{
continue;
}
val = wcschr( key, L'=' );
if( val == 0 )
{
env_set( key, L"", ENV_EXPORT );
}
else
{
*val = L'\0';
val++;
//fwprintf( stderr, L"Set $%ls to %ls\n", key, val );
if (variable_can_be_array(val)) {
for (size_t i=0; val[i] != L'\0'; i++) {
if( val[i] == L':' ) {
val[i] = ARRAY_SEP;
}
}
}
env_set( key, val, ENV_EXPORT | ENV_GLOBAL );
}
free(key);
}
/* Set the given paths in the environment, if we have any */
if (paths != NULL)
{
env_set(FISH_DATADIR_VAR, paths->data.c_str(), ENV_GLOBAL | ENV_EXPORT);
env_set(FISH_SYSCONFDIR_VAR, paths->sysconf.c_str(), ENV_GLOBAL | ENV_EXPORT);
env_set(FISH_HELPDIR_VAR, paths->doc.c_str(), ENV_GLOBAL | ENV_EXPORT);
env_set(FISH_BIN_DIR, paths->bin.c_str(), ENV_GLOBAL | ENV_EXPORT);
}
/*
Set up the PATH variable
*/
setup_path();
/*
Set up the USER variable
*/
pw = getpwuid( getuid() );
if( pw )
{
uname = str2wcs( pw->pw_name );
env_set( L"USER", uname, ENV_GLOBAL | ENV_EXPORT );
free( uname );
}
/*
Set up the version variable
*/
version = str2wcs( PACKAGE_VERSION );
env_set( L"version", version, ENV_GLOBAL );
free( version );
const env_var_t fishd_dir_wstr = env_get_string( L"FISHD_SOCKET_DIR");
const env_var_t user_dir_wstr = env_get_string( L"USER" );
wchar_t * fishd_dir = fishd_dir_wstr.missing()?NULL:const_cast<wchar_t*>(fishd_dir_wstr.c_str());
wchar_t * user_dir = user_dir_wstr.missing()?NULL:const_cast<wchar_t*>(user_dir_wstr.c_str());
env_universal_init(fishd_dir , user_dir ,
&start_fishd,
&universal_callback );
/*
Set up SHLVL variable
*/
const env_var_t shlvl_str = env_get_string( L"SHLVL" );
wcstring nshlvl_str = L"1";
if (! shlvl_str.missing())
{
long shlvl_i = wcstol(shlvl_str.c_str(), NULL, 10);
if (shlvl_i >= 0)
{
nshlvl_str = format_string(L"%ld", 1 + shlvl_i);
}
}
env_set(L"SHLVL", nshlvl_str.c_str(), ENV_GLOBAL | ENV_EXPORT );
/* Set correct defaults for e.g. USER and HOME variables */
env_set_defaults();
/* Set g_log_forks */
env_var_t log_forks = env_get_string(L"fish_log_forks");
g_log_forks = ! log_forks.missing_or_empty() && from_string<bool>(log_forks);
/* Set g_use_posix_spawn. Default to true. */
env_var_t use_posix_spawn = env_get_string(L"fish_use_posix_spawn");
g_use_posix_spawn = (use_posix_spawn.missing_or_empty() ? true : from_string<bool>(use_posix_spawn));
}