From e9e80c192e667fecdd9973d4a5198becfa6c324e Mon Sep 17 00:00:00 2001
From: starnakin <camille@chauvet.pro>
Date: Wed, 5 Jul 2023 00:36:53 +0200
Subject: [PATCH] fix: segfault '<t'

---
 src/cmd/cmd.c         |  4 +++-
 src/exec/exec.c       |  9 +++------
 src/parsing/parsing.c | 35 +++++++++++++++++++----------------
 3 files changed, 25 insertions(+), 23 deletions(-)

diff --git a/src/cmd/cmd.c b/src/cmd/cmd.c
index 187a287..2828f29 100644
--- a/src/cmd/cmd.c
+++ b/src/cmd/cmd.c
@@ -5,7 +5,8 @@ void cmd_del(void *ptr)
 	cmd_t* content = ptr;
 
 	tab_free((void**)content->args);
-	free(content->executable);
+	if (content->executable)
+		free(content->executable);
 	free(content);
 }
 
@@ -16,6 +17,7 @@ int cmd_init(cmd_t* command)
 	command->input[1] = -1;
 	command->output[0] = -1;
 	command->output[1] = -1;
+	command->executable = NULL;
 	return 0;
 }
 
diff --git a/src/exec/exec.c b/src/exec/exec.c
index 79d2a93..4a3af89 100644
--- a/src/exec/exec.c
+++ b/src/exec/exec.c
@@ -14,11 +14,6 @@
 int execute(lst** cmds, cmd_t* cmd, lst** env)
 {
   int pid;
-  if (cmd->input[0] == -2 || cmd->input[0] == -2)
-  {
-	  pid = -1;
-	  return 0;
-  }
   if (cmd->executable == NULL)
   {
 	  dprintf(2, "zzsh: command not found: %s\n", cmd->args[0]);
@@ -127,7 +122,9 @@ int cmds_list_exec(lst** cmds, data_t *data)
 			add_fd(content->output, fds[1]);
 			add_fd(((cmd_t*)current->next->content)->input, fds[0]);
 		}
-		if (builtin_execute(data, content) == 1)
+		if (content->input[0] == -2 || content->input[0] == -2 || content->args[0] == NULL)
+			content->pid = -1;
+		else if (builtin_execute(data, content) == 1)
 		{
 			if (execute(cmds, content, data->env))
 			{
diff --git a/src/parsing/parsing.c b/src/parsing/parsing.c
index 991b422..54eb1c4 100644
--- a/src/parsing/parsing.c
+++ b/src/parsing/parsing.c
@@ -19,29 +19,32 @@ int parsing_cmd(char *str, cmd_t* command, data_t *data)
 	command->args = split_quoted_charset(str, "\t ");
 	if (command->args == NULL)
 		return 1;
-	for (size_t i = 0; command->args[i]; i++)
+	for (size_t i = 0; command->args[i] != NULL; i++)
 		quote_remover(command->args[i]);
-	if (command->args[0][0] == '\\')
+	if (command->args[0] != NULL)
 	{
-		tmp = strdup(command->args[0] + 1);
-		if (tmp != NULL)
+		if (command->args[0][0] == '\\')
 		{
-			free(command->args[0]);
-			command->args[0] = strdup(tmp);
+			tmp = strdup(command->args[0] + 1);
+			if (tmp != NULL)
+			{
+				free(command->args[0]);
+				command->args[0] = strdup(tmp);
+			}
 		}
-	}
-	else
-	{
-		tmp = get_alias(data->aliases, command->args[0]);
-		if (tmp != NULL)
+		else
 		{
-			free(command->args[0]);
-			command->args[0] = strdup(tmp);
+			tmp = get_alias(data->aliases, command->args[0]);
+			if (tmp != NULL)
+			{
+				free(command->args[0]);
+				command->args[0] = strdup(tmp);
+			}
 		}
+		if (command->args[0] == NULL)
+			return 1;
+		command->executable = parsing_executable(command->args[0], data);
 	}
-	if (command->args[0] == NULL)
-		return 1;
-	command->executable = parsing_executable(command->args[0], data);
 	return 0;
 }