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rofi/source/dialogs/run.c
Dave Davenport ce822a3bbf Fix memory leak run dialog when skipping.
2016-08-02 18:37:14 +02:00

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/*
* rofi
*
* MIT/X11 License
* Copyright 2013-2016 Qball Cow <qball@gmpclient.org>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
/**
* \ingroup RUNMode
* @{
*/
#include <config.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <limits.h>
#include <signal.h>
#include <sys/types.h>
#include <dirent.h>
#include <strings.h>
#include <string.h>
#include <errno.h>
#include "rofi.h"
#include "settings.h"
#include "helper.h"
#include "history.h"
#include "dialogs/run.h"
#include "mode-private.h"
/**
* Name of the history file where previously choosen commands are stored.
*/
#define RUN_CACHE_FILE "rofi-3.runcache"
/**
* The internal data structure holding the private data of the Run Mode.
*/
typedef struct
{
/** list of available commands. */
char **cmd_list;
/** Length of the #cmd_list. */
unsigned int cmd_list_length;
} RunModePrivateData;
/**
* @param cmd The cmd to execute
* @param run_in_term Indicate if command should be run in a terminal
*
* Execute command.
*
* @returns FALSE On failure, TRUE on success
*/
static inline int execsh ( const char *cmd, int run_in_term )
{
int retv = TRUE;
char **args = NULL;
int argc = 0;
if ( run_in_term ) {
helper_parse_setup ( config.run_shell_command, &args, &argc, "{cmd}", cmd, NULL );
}
else {
helper_parse_setup ( config.run_command, &args, &argc, "{cmd}", cmd, NULL );
}
GError *error = NULL;
g_spawn_async ( NULL, args, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL, NULL, &error );
if ( error != NULL ) {
char *msg = g_strdup_printf ( "Failed to execute: '%s'\nError: '%s'", cmd, error->message );
rofi_view_error_dialog ( msg, FALSE );
g_free ( msg );
// print error.
g_error_free ( error );
retv = FALSE;
}
// Free the args list.
g_strfreev ( args );
return retv;
}
/**
* @param cmd The cmd to execute
* @param run_in_term Indicate if command should be run in a terminal
*
* Execute command and add to history.
*/
static void exec_cmd ( const char *cmd, int run_in_term )
{
GError *error = NULL;
if ( !cmd || !cmd[0] ) {
return;
}
gsize lf_cmd_size = 0;
gchar *lf_cmd = g_locale_from_utf8 ( cmd, -1, NULL, &lf_cmd_size, &error );
if ( error != NULL ) {
fprintf ( stderr, "Failed to convert command to locale encoding: %s\n", error->message );
g_error_free ( error );
return;
}
if ( execsh ( lf_cmd, run_in_term ) ) {
/**
* This happens in non-critical time (After launching app)
* It is allowed to be a bit slower.
*/
char *path = g_build_filename ( cache_dir, RUN_CACHE_FILE, NULL );
history_set ( path, cmd );
g_free ( path );
}
g_free ( lf_cmd );
}
/**
* @param cmd The command to remove from history
*
* Remove command from history.
*/
static void delete_entry ( const char *cmd )
{
char *path = g_build_filename ( cache_dir, RUN_CACHE_FILE, NULL );
history_remove ( path, cmd );
g_free ( path );
}
/**
* @param a The First key to compare
* @param b The second key to compare
* @param data Unused.
*
* Function used for sorting.
*
* @returns returns less then, equal to and greater than zero is a is less than, is a match or greater than b.
*/
static int sort_func ( const void *a, const void *b, G_GNUC_UNUSED void *data )
{
const char *astr = *( const char * const * ) a;
const char *bstr = *( const char * const * ) b;
if ( astr == NULL && bstr == NULL ) {
return 0;
}
else if ( astr == NULL ) {
return 1;
}
else if ( bstr == NULL ) {
return -1;
}
return g_ascii_strcasecmp ( astr, bstr );
}
/**
* External spider to get list of executables.
*/
static char ** get_apps_external ( char **retv, unsigned int *length, unsigned int num_favorites )
{
int fd = execute_generator ( config.run_list_command );
if ( fd >= 0 ) {
FILE *inp = fdopen ( fd, "r" );
if ( inp ) {
char *buffer = NULL;
size_t buffer_length = 0;
while ( getline ( &buffer, &buffer_length, inp ) > 0 ) {
int found = 0;
// Filter out line-end.
if ( buffer[strlen ( buffer ) - 1] == '\n' ) {
buffer[strlen ( buffer ) - 1] = '\0';
}
// This is a nice little penalty, but doable? time will tell.
// given num_favorites is max 25.
for ( unsigned int j = 0; found == 0 && j < num_favorites; j++ ) {
if ( strcasecmp ( buffer, retv[j] ) == 0 ) {
found = 1;
}
}
if ( found == 1 ) {
continue;
}
// No duplicate, add it.
retv = g_realloc ( retv, ( ( *length ) + 2 ) * sizeof ( char* ) );
retv[( *length )] = g_strdup ( buffer );
( *length )++;
}
if ( buffer != NULL ) {
free ( buffer );
}
if ( fclose ( inp ) != 0 ) {
fprintf ( stderr, "Failed to close stdout off executor script: '%s'\n",
strerror ( errno ) );
}
}
}
retv[( *length ) ] = NULL;
return retv;
}
/**
* Internal spider used to get list of executables.
*/
static char ** get_apps ( unsigned int *length )
{
GError *error = NULL;
char **retv = NULL;
unsigned int num_favorites = 0;
char *path;
if ( g_getenv ( "PATH" ) == NULL ) {
return NULL;
}
TICK_N ( "start" );
path = g_build_filename ( cache_dir, RUN_CACHE_FILE, NULL );
retv = history_get_list ( path, length );
g_free ( path );
// Keep track of how many where loaded as favorite.
num_favorites = ( *length );
path = g_strdup ( g_getenv ( "PATH" ) );
gsize l = 0;
gchar *homedir = g_locale_to_utf8 ( g_get_home_dir (), -1, NULL, &l, &error );
if ( error != NULL ) {
fprintf ( stderr, "Failed to convert homedir to UTF-8: %s\n", error->message );
g_clear_error ( &error );
g_free ( homedir );
return NULL;
}
const char *const sep = ":";
for ( const char *dirname = strtok ( path, sep ); dirname != NULL; dirname = strtok ( NULL, sep ) ) {
DIR *dir = opendir ( dirname );
if ( dir != NULL ) {
struct dirent *dent;
gsize dirn_len = 0;
gchar *dirn = g_locale_to_utf8 ( dirname, -1, NULL, &dirn_len, &error );
if ( error != NULL ) {
fprintf ( stderr, "Failed to convert directory name to UTF-8: %s\n", error->message );
g_clear_error ( &error );
continue;
}
gboolean is_homedir = g_str_has_prefix ( dirn, homedir );
g_free ( dirn );
while ( ( dent = readdir ( dir ) ) != NULL ) {
if ( dent->d_type != DT_REG && dent->d_type != DT_LNK && dent->d_type != DT_UNKNOWN ) {
continue;
}
// Skip dot files.
if ( dent->d_name[0] == '.' ) {
continue;
}
if ( is_homedir ) {
gchar *fpath = g_build_filename ( dirname, dent->d_name, NULL );
gboolean b = g_file_test ( fpath, G_FILE_TEST_IS_EXECUTABLE );
g_free ( fpath );
if ( !b ) {
continue;
}
}
gsize name_len;
gchar *name = g_filename_to_utf8 ( dent->d_name, -1, NULL, &name_len, &error );
if ( error != NULL ) {
fprintf ( stderr, "Failed to convert filename to UTF-8: %s\n", error->message );
g_clear_error ( &error );
g_free ( name );
continue;
}
// This is a nice little penalty, but doable? time will tell.
// given num_favorites is max 25.
int found = 0;
for ( unsigned int j = 0; found == 0 && j < num_favorites; j++ ) {
if ( g_strcmp0 ( name, retv[j] ) == 0 ) {
found = 1;
}
}
if ( found == 1 ) {
g_free ( name );
continue;
}
retv = g_realloc ( retv, ( ( *length ) + 2 ) * sizeof ( char* ) );
retv[( *length )] = name;
retv[( *length ) + 1] = NULL;
( *length )++;
}
closedir ( dir );
}
}
g_free ( homedir );
// Get external apps.
if ( config.run_list_command != NULL && config.run_list_command[0] != '\0' ) {
retv = get_apps_external ( retv, length, num_favorites );
}
// No sorting needed.
if ( ( *length ) == 0 ) {
return retv;
}
// TODO: check this is still fast enough. (takes 1ms on laptop.)
if ( ( *length ) > num_favorites ) {
g_qsort_with_data ( &retv[num_favorites], ( *length ) - num_favorites, sizeof ( char* ), sort_func, NULL );
}
g_free ( path );
unsigned int removed = 0;
for ( unsigned int index = num_favorites; index < ( ( *length ) - 1 ); index++ ) {
if ( g_strcmp0 ( retv[index], retv[index + 1] ) == 0 ) {
g_free ( retv[index] );
retv[index] = NULL;
removed++;
}
}
if ( ( *length ) > num_favorites ) {
g_qsort_with_data ( &retv[num_favorites], ( *length ) - num_favorites, sizeof ( char* ),
sort_func,
NULL );
}
// Reduce array length;
( *length ) -= removed;
TICK_N ( "stop" );
return retv;
}
static int run_mode_init ( Mode *sw )
{
if ( sw->private_data == NULL ) {
RunModePrivateData *pd = g_malloc0 ( sizeof ( *pd ) );
sw->private_data = (void *) pd;
pd->cmd_list = get_apps ( &( pd->cmd_list_length ) );
}
return TRUE;
}
static void run_mode_destroy ( Mode *sw )
{
RunModePrivateData *rmpd = (RunModePrivateData *) sw->private_data;
if ( rmpd != NULL ) {
g_strfreev ( rmpd->cmd_list );
g_free ( rmpd );
sw->private_data = NULL;
}
}
static unsigned int run_mode_get_num_entries ( const Mode *sw )
{
const RunModePrivateData *rmpd = (const RunModePrivateData *) sw->private_data;
return rmpd->cmd_list_length;
}
static ModeMode run_mode_result ( Mode *sw, int mretv, char **input, unsigned int selected_line )
{
RunModePrivateData *rmpd = (RunModePrivateData *) sw->private_data;
ModeMode retv = MODE_EXIT;
gboolean run_in_term = ( ( mretv & MENU_CUSTOM_ACTION ) == MENU_CUSTOM_ACTION );
if ( mretv & MENU_NEXT ) {
retv = NEXT_DIALOG;
}
else if ( mretv & MENU_PREVIOUS ) {
retv = PREVIOUS_DIALOG;
}
else if ( mretv & MENU_QUICK_SWITCH ) {
retv = ( mretv & MENU_LOWER_MASK );
}
else if ( ( mretv & MENU_OK ) && rmpd->cmd_list[selected_line] != NULL ) {
exec_cmd ( rmpd->cmd_list[selected_line], run_in_term );
}
else if ( ( mretv & MENU_CUSTOM_INPUT ) && *input != NULL && *input[0] != '\0' ) {
exec_cmd ( *input, run_in_term );
}
else if ( ( mretv & MENU_ENTRY_DELETE ) && rmpd->cmd_list[selected_line] ) {
delete_entry ( rmpd->cmd_list[selected_line] );
// Clear the list.
retv = RELOAD_DIALOG;
run_mode_destroy ( sw );
run_mode_init ( sw );
}
return retv;
}
static char *_get_display_value ( const Mode *sw, unsigned int selected_line, G_GNUC_UNUSED int *state, int get_entry )
{
const RunModePrivateData *rmpd = (const RunModePrivateData *) sw->private_data;
return get_entry ? g_strdup ( rmpd->cmd_list[selected_line] ) : NULL;
}
static int run_token_match ( const Mode *sw, GRegex **tokens, unsigned int index )
{
const RunModePrivateData *rmpd = (const RunModePrivateData *) sw->private_data;
return token_match ( tokens, rmpd->cmd_list[index] );
}
#include "mode-private.h"
Mode run_mode =
{
.name = "run",
.cfg_name_key = "display-run",
._init = run_mode_init,
._get_num_entries = run_mode_get_num_entries,
._result = run_mode_result,
._destroy = run_mode_destroy,
._token_match = run_token_match,
._get_display_value = _get_display_value,
._get_completion = NULL,
._preprocess_input = NULL,
.private_data = NULL,
.free = NULL
};
/*@}*/
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