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#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <wchar.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
#include <libgen.h>
#include "fallback.h"
#include "util.h"
#include "common.h"
#include "env.h"
#include "wutil.h"
#include "halloc.h"
#include "halloc_util.h"
#include "path.h"
#include "expand.h"
/**
Unexpected error in path_get_path()
*/
#define MISSING_COMMAND_ERR_MSG _( L"Error while searching for command '%ls'" )
wchar_t *path_get_path( void *context, const wchar_t *cmd )
{
wchar_t *path;
int err = ENOENT;
CHECK( cmd, 0 );
debug( 3, L"path_get_path( '%ls' )", cmd );
if(wcschr( cmd, L'/' ) != 0 )
{
if( waccess( cmd, X_OK )==0 )
{
struct stat buff;
if(wstat( cmd, &buff ))
{
return 0;
}
if( S_ISREG(buff.st_mode) )
return halloc_wcsdup( context, cmd );
else
{
errno = EACCES;
return 0;
}
}
else
{
struct stat buff;
wstat( cmd, &buff );
return 0;
}
}
else
{
path = env_get(L"PATH");
if( path == 0 )
{
if( contains( PREFIX L"/bin", L"/bin", L"/usr/bin" ) )
{
path = L"/bin" ARRAY_SEP_STR L"/usr/bin";
}
else
{
path = L"/bin" ARRAY_SEP_STR L"/usr/bin" ARRAY_SEP_STR PREFIX L"/bin";
}
}
/*
Allocate string long enough to hold the whole command
*/
wchar_t *new_cmd = halloc( context, sizeof(wchar_t)*(wcslen(cmd)+wcslen(path)+2) );
/*
We tokenize a copy of the path, since strtok modifies
its arguments
*/
wchar_t *path_cpy = wcsdup( path );
wchar_t *nxt_path = path;
wchar_t *state;
if( (new_cmd==0) || (path_cpy==0) )
{
DIE_MEM();
}
for( nxt_path = wcstok( path_cpy, ARRAY_SEP_STR, &state );
nxt_path != 0;
nxt_path = wcstok( 0, ARRAY_SEP_STR, &state) )
{
int path_len = wcslen( nxt_path );
wcscpy( new_cmd, nxt_path );
if( new_cmd[path_len-1] != L'/' )
{
new_cmd[path_len++]=L'/';
}
wcscpy( &new_cmd[path_len], cmd );
if( waccess( new_cmd, X_OK )==0 )
{
struct stat buff;
if( wstat( new_cmd, &buff )==-1 )
{
if( errno != EACCES )
{
wperror( L"stat" );
}
continue;
}
if( S_ISREG(buff.st_mode) )
{
free( path_cpy );
return new_cmd;
}
err = EACCES;
}
else
{
switch( errno )
{
case ENOENT:
case ENAMETOOLONG:
case EACCES:
case ENOTDIR:
break;
default:
{
debug( 1,
MISSING_COMMAND_ERR_MSG,
new_cmd );
wperror( L"access" );
}
}
}
}
free( path_cpy );
}
errno = err;
return 0;
}
wchar_t *path_get_cdpath( void *context, wchar_t *dir )
{
wchar_t *res = 0;
int err = ENOENT;
if( !dir )
return 0;
if( dir[0] == L'/'|| (wcsncmp( dir, L"./", 2 )==0) )
{
struct stat buf;
if( wstat( dir, &buf ) == 0 )
{
if( S_ISDIR(buf.st_mode) )
{
res = halloc_wcsdup( context, dir );
}
else
{
err = ENOTDIR;
}
}
}
else
{
wchar_t *path;
wchar_t *path_cpy;
wchar_t *nxt_path;
wchar_t *state;
wchar_t *whole_path;
path = env_get(L"CDPATH");
if( !path || !wcslen(path) )
{
path = L".";
}
nxt_path = path;
path_cpy = wcsdup( path );
if( !path_cpy )
{
DIE_MEM();
}
for( nxt_path = wcstok( path_cpy, ARRAY_SEP_STR, &state );
nxt_path != 0;
nxt_path = wcstok( 0, ARRAY_SEP_STR, &state) )
{
wchar_t *expanded_path = expand_tilde( wcsdup(nxt_path) );
// debug( 2, L"woot %ls\n", expanded_path );
int path_len = wcslen( expanded_path );
if( path_len == 0 )
{
free(expanded_path );
continue;
}
whole_path =
wcsdupcat( expanded_path,
( expanded_path[path_len-1] != L'/' )?L"/":L"",
dir );
free(expanded_path );
struct stat buf;
if( wstat( whole_path, &buf ) == 0 )
{
if( S_ISDIR(buf.st_mode) )
{
res = whole_path;
halloc_register( context, whole_path );
break;
}
else
{
err = ENOTDIR;
}
}
else
{
if( lwstat( whole_path, &buf ) == 0 )
{
err = EROTTEN;
}
}
free( whole_path );
}
free( path_cpy );
}
if( !res )
{
errno = err;
}
return res;
}
wchar_t *path_get_config( void *context)
{
wchar_t *xdg_dir, *home;
int done = 0;
wchar_t *res = 0;
xdg_dir = env_get( L"XDG_CONFIG_HOME" );
if( xdg_dir )
{
res = wcsdupcat( xdg_dir, L"/fish" );
if( !create_directory( res ) )
{
done = 1;
}
else
{
free( res );
}
}
else
{
home = env_get( L"HOME" );
if( home )
{
res = wcsdupcat( home, L"/.config/fish" );
if( !create_directory( res ) )
{
done = 1;
}
else
{
free( res );
}
}
}
if( done )
{
halloc_register_function( context, &free, res );
return res;
}
else
{
debug( 0, _(L"Unable to create a configuration directory for fish. Your personal settings will not be saved. Please set the $XDG_CONFIG_HOME variable to a directory where the current user has write access." ));
return 0;
}
}
wchar_t *path_make_canonical( void *context, const wchar_t *path )
{
wchar_t *res = halloc_wcsdup( context, path );
wchar_t *in, *out;
in = out = res;
while( *in )
{
if( *in == L'/' )
{
while( *(in+1) == L'/' )
{
in++;
}
}
*out = *in;
out++;
in++;
}
while( 1 )
{
if( out == res )
break;
if( *(out-1) != L'/' )
break;
out--;
}
*out = 0;
return res;
}
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