From 43137eaa24c2b0222982a6c0f19c76d49a541555 Mon Sep 17 00:00:00 2001
From: s444505 <s444505@pc01o.labs.wmi.amu.edu.pl>
Date: Wed, 30 Jan 2019 08:45:45 +0100
Subject: [PATCH] microshell

---
 microshell/#microshell.c#      | 183 ++++++++++++++++++++++++++++++
 microshell/makefile            |   5 +
 microshell/microshell          | Bin 0 -> 17856 bytes
 microshell/microshell.c        | 200 +++++++++++++++++++++++++++++++++
 microshell/microshell_backup.c |  99 ++++++++++++++++
 5 files changed, 487 insertions(+)
 create mode 100644 microshell/#microshell.c#
 create mode 100644 microshell/makefile
 create mode 100644 microshell/microshell
 create mode 100644 microshell/microshell.c
 create mode 100644 microshell/microshell_backup.c

diff --git a/microshell/#microshell.c# b/microshell/#microshell.c#
new file mode 100644
index 0000000..23a3cc8
--- /dev/null
+++ b/microshell/#microshell.c#
@@ -0,0 +1,183 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <string.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <dirent.h>
+#define BUFFER_SIZE 4096
+
+void mv(char **args,int size){
+    if(size>3){
+        printf("Too many arguments\n");
+        return;
+    }
+    int des=symlink(args[1],args[2]);
+    if(des==-1){
+        printf("%s\n",strerror(errno));
+    }
+    unlink(args[1]);
+}
+
+void ls(char **args,int size){
+    struct dirent *des;
+    DIR *dr;
+    if(size==1) dr=opendir(".");	
+    if(size==2) dr=opendir(args[1]);
+    if(size>2){
+        printf("Too many arguments\n");
+        return;
+    }
+    if(dr==NULL){
+    	printf("%s\n",strerror(errno));
+        return;
+    }
+    while((des=readdir(dr))!=NULL){
+        char *nazwa=des->d_name;
+        if(nazwa[0]!='.') printf("%s\n",nazwa);
+    }
+    closedir(dr);
+}
+
+void mk_dir(char **args,int size){
+    int i=0,w;
+    if(size==1) printf("Missing operand\n");
+    else{
+        for(i=1;i<size;i++){
+            w=mkdir(args[i],0700);
+            if(w==-1) printf("%s (%s)\n",strerror(errno),args[i]);
+        }
+    }
+}
+
+void touch(char **args,int size){
+    int i;
+    for(i=1;i<size;i++){
+    int des=open(args[i],O_CREAT,S_IWRITE|S_IREAD);
+    if(des==(-1)){
+        printf("%s\n",strerror(errno));
+    }
+    close(des);
+    }
+}
+
+void help(){
+    printf(" ls                  | wyswietla pliki w biezacym katalogu\n");
+    printf("                     | z arg -a lacznie z plikami ukrytymi\n");
+    printf(" pwd                 | wyswietla katalog w ktorym obecnie znajduje sie uzytkownik\n");
+    printf("                     |\n");
+    printf(" cp *plik1* *plik2*  | kopiuje plik1 pod nazwa i lokalizacja plik2\n");
+    printf("                     |\n");
+    printf(" mv *plik1* *plik2*  | przenosi plik1 pod nazwa i do lokalizacji plik2\n");
+}
+
+void cd(char **args,int size){ghost stories
+    if(size>2) printf("Too many arguments\n");
+    else{
+        int d=chdir(args[1]);
+        if(d==-1){
+            printf("%s\n",strerror(errno));
+        }
+    }
+}
+
+void rm(char **args,int size){
+    if(size==1) printf("Too few arguments\n");
+    else{
+        int i,des;
+        for(i=1;i<size;i++){
+            des=unlink(args[i]);
+            if(des==-1){
+                printf("%s-(%s)\n",strerror(errno),args[i]);
+            }
+        }
+    }
+}
+
+void read_order(char **args,int size){
+    if(strcmp(args[0],"pwd")==0){
+        char cwd[1024];
+        printf("%s\n",getcwd(cwd,1024));        
+    }
+    else if(strcmp(args[0],"exit")==0){
+        system("clear");
+        exit(0);       
+    }
+    else if(strcmp(args[0],"help")==0){
+        help();
+    }
+    else if(strcmp(args[0],"touch")==0){
+        touch(args,size);   
+    }
+    else if(strcmp(args[0],"cd")==0){
+        cd(args,size);
+    }
+    else if(strcmp(args[0],"mkdir")ghost stories==0){
+        mk_dir(args,size);
+    }
+    else if(strcmp(args[0],"ls")==0){
+        ls(args,size);
+    }
+    else if(strcmp(args[0],"mv")==0){
+        mv(args,size);
+    }
+    else if(strcmp(args[0],"clear")==0){
+        system("clear");
+    }
+    else if(strcmp(args[0],"rm")==0){
+        rm(args,size);
+    }
+    else{
+        pid_t pid=fork();
+        if(pid==0){
+           int des=execvp(args[0],args);
+           if(des==-1){
+                printf("%s\n",strerror(errno));
+                exit(EXIT_FAILURE);
+           }
+        }else{
+            waitpid(pid,0,0);
+        }
+    }
+}
+
+void extract_args(char line[BUFFER_SIZE]){
+    int i,size=0;
+    for(i=0;i<BUFFER_SIZE;i++){
+        if(line[i]==' '){
+            size++;
+        }
+        if(line[i]=='\n'){ghost stories
+            size++;
+            line[i]=' ';
+            break;
+        }
+    }
+    char **args=malloc((size+1)*sizeof(char));
+    char *del=" ";
+    args[0]=strtok(line,del);
+    for(i=1;i<size;i++){
+        args[i]=strtok(NULL,del);
+    }
+    read_order(args,size);
+}
+
+int main(){
+    system("clear");
+    while(true)
+    {
+        char cwd[1024];
+        char line[BUFFER_SIZE];
+        char *login=getlogin();
+        getcwd(cwd,1024);
+        printf("\033[0;36m%s@\033[0m[%s]$ ",login,cwd);
+        fgets(line,BUFFER_SIZE,stdin);
+        if(strcmp(line,"\n")==0) continue;
+        extract_args(line);
+    }
+    return 0;
+}
diff --git a/microshell/makefile b/microshell/makefile
new file mode 100644
index 0000000..f9b0647
--- /dev/null
+++ b/microshell/makefile
@@ -0,0 +1,5 @@
+microshell: microshell.c
+make:
+	gcc microshell.c -o microshell
+clean:
+	rm microshell
diff --git a/microshell/microshell b/microshell/microshell
new file mode 100644
index 0000000000000000000000000000000000000000..b889f8b15b163e560b48afb6932e4031ffaf5493
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diff --git a/microshell/microshell.c b/microshell/microshell.c
new file mode 100644
index 0000000..aa94d3b
--- /dev/null
+++ b/microshell/microshell.c
@@ -0,0 +1,200 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <string.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <dirent.h>
+#define BUFFER_SIZE 2048
+
+void mv(char **args,int size){
+    if(size>3){
+        printf("Too many arguments\n");
+        return;
+    }
+    int des=link(args[1],args[2]);
+    if(des==-1){
+        printf("%s\n",strerror(errno));
+    }else{
+        unlink(args[1]);
+    }
+}
+
+void ls(char **args,int size){
+    struct dirent *des;
+    DIR *dr;
+    if(size==1) dr=opendir(".");	
+    if(size==2) dr=opendir(args[1]);
+    if(size>2){
+        printf("Too many arguments\n");
+        return;
+    }
+    if(dr==NULL){
+    	printf("%s\n",strerror(errno));
+        return;
+    }
+    while((des=readdir(dr))!=NULL){
+        char *nazwa=des->d_name;
+        if(nazwa[0]!='.') printf("%s\n",nazwa);
+    }
+    closedir(dr);
+}
+
+void mk_dir(char **args,int size){
+    int i=0,w;
+    if(size==1) printf("Missing operand\n");
+    else{
+        for(i=1;i<size;i++){
+            w=mkdir(args[i],0777);
+            if(w==-1) printf("%s (%s)\n",strerror(errno),args[i]);
+        }
+    }
+}
+
+void touch(char **args,int size){
+    int i;
+    for(i=1;i<size;i++){
+    int des=open(args[i],O_CREAT,S_IWRITE|S_IREAD);
+    if(des==(-1)){
+        printf("%s\n",strerror(errno));
+    }
+    close(des);
+    }
+}
+
+void help(){
+    printf(" Microshell by: Wojciech Wiśniewski\n");
+    printf("----------------------------------------------------------\n");
+    printf(" cd *path*           | zmienia bieżący katalog na *path*\n");
+    printf("                     |\n");
+    printf(" ls                  | wyświetla pliki w bieżacym katalogu\n");
+    printf("                     |\n");
+    printf(" pwd                 | wyswietla katalog w którym obecnie znajduje się użytkownik\n");
+    printf("                     |\n");
+    printf(" rm *file*           | usuwa plik *file*\n");
+    printf("                     |\n");
+    printf(" mv *file1* *file2*  | przenosi plik1 do lokalizacji plik2\n");
+    printf("                     |\n");
+    printf(" mkdir *katalog*     | tworzy folder o nazwie/ścieżce *katalog*\n");
+    printf("                     |\n");
+    printf(" touch *file*        | wysyła sygnał do pliku *file*, jeżeli plik o tej nazwie nie istnieje to zostaje on stworzony\n");
+    printf("                     |\n");
+    printf(" *path* lub ./*name* | wykonuje program o ścieżce *path* lub *name* gdy znajduje sie w bieżącym folderze\n");
+    printf("                     |\n");
+    printf(" exit                | kończy działanie programu\n");
+}
+
+void cd(char **args,int size){
+    if(size>2) printf("Too many arguments\n");
+    else{
+        int d=chdir(args[1]);
+        if(d==-1){
+            printf("%s\n",strerror(errno));
+        }
+    }
+}
+
+void rm(char **args,int size){
+    if(size==1) printf("Too few arguments\n");
+    else{
+        int i,des;
+        for(i=1;i<size;i++){
+            des=unlink(args[i]);
+            if(des==-1){
+                printf("%s-(%s)\n",strerror(errno),args[i]);
+            }
+        }
+    }
+}
+
+void read_order(char **args,int size){
+    if(strcmp(args[0],"pwd")==0){
+        char cwd[1024];
+        printf("%s\n",getcwd(cwd,1024));        
+    }
+    else if(strcmp(args[0],"exit")==0){
+        system("clear");
+        exit(0);       
+    }
+    else if(strcmp(args[0],"help")==0){
+        help();
+    }
+    else if(strcmp(args[0],"touch")==0){
+        touch(args,size);   
+    }
+    else if(strcmp(args[0],"cd")==0){
+        cd(args,size);
+    }
+    else if(strcmp(args[0],"mkdir")==0){
+        mk_dir(args,size);
+    }
+    else if(strcmp(args[0],"ls")==0){
+        ls(args,size);
+    }
+    else if(strcmp(args[0],"mv")==0){
+        mv(args,size);
+    }
+    else if(strcmp(args[0],"clear")==0){
+        system("clear");
+    }
+    else if(strcmp(args[0],"rm")==0){
+        rm(args,size);
+    }
+    else if(args[0][0]=='/'||(args[0][0]=='.'&&args[0][1]=='/')){
+        pid_t pid=fork();
+        if(pid==0){
+           int des=execvp(args[0],args);
+           if(des==-1){
+                printf("%s\n",strerror(errno));
+                exit(EXIT_FAILURE);
+           }
+        }else{
+            waitpid(pid,0,0);
+        }
+    }
+    else{
+        printf("Unknown command\n");
+    }
+}
+
+void extract_args(char line[BUFFER_SIZE]){
+    int i,size=0;
+    for(i=0;i<BUFFER_SIZE;i++){
+        if(line[i]==' '){
+            size++;
+        }
+        if(line[i]=='\n'){
+            size++;
+            line[i]=' ';
+            break;
+        }
+    }
+    char **args=(char**) calloc((size+1),sizeof(char*));
+    char *del=" ";
+    args[0]=strtok(line,del);
+    for(i=1;i<size;i++){
+        args[i]=strtok(NULL,del);
+    }
+    args[size]=NULL;
+    read_order(args,size);
+}
+
+int main(){
+    system("clear");
+    while(true)
+    {
+        char cwd[1024];
+        char line[BUFFER_SIZE];
+        char *login=getlogin();
+        getcwd(cwd,1024);
+        printf("\033[0;36m%s@\033[0m[%s]$ ",login,cwd);
+        fgets(line,BUFFER_SIZE,stdin);
+        if(strcmp(line,"\n")==0) continue;
+        extract_args(line);
+    }
+    return 0;
+}
diff --git a/microshell/microshell_backup.c b/microshell/microshell_backup.c
new file mode 100644
index 0000000..9cf221d
--- /dev/null
+++ b/microshell/microshell_backup.c
@@ -0,0 +1,99 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <string.h>
+#include <errno.h>
+#include <stdbool.h>
+#define BUFFER_SIZE 4096
+
+void mk_dir(){
+    
+}
+
+void touch(){
+    char file[1024];
+    scanf("%s",file);
+    int des=open(file, O_CREAT | O_EXCL, S_IWRITE|S_IREAD);
+    if(des==(-1)){
+        printf("%s\n",strerror(errno));
+    }
+}
+
+void help(){
+    printf(" ls                  | wyswietla pliki w biezacym katalogu\n");
+    printf("                     | z arg -a lacznie z plikami ukrytymi\n");
+    printf(" pwd                 | wyswietla katalog w ktorym obecnie znajduje sie uzytkownik\n");
+    printf("                     |\n");
+    printf(" cp *plik1* *plik2*  | kopiuje plik1 pod nazwa i lokalizacja plik2\n");
+    printf("                     |\n");
+    printf(" mv *plik1* *plik2*  | przenosi plik1 pod nazwa i do lokalizacji plik2\n");
+}
+
+void cd(){
+    char pathname[50];
+    scanf("%s",pathname);
+    chdir(pathname);
+}
+
+void read_order(char order[20]){
+    if(strcmp(order,"pwd")==0){
+        char cwd[1024];
+        printf("%s\n",getcwd(cwd,1024));        
+    }
+    else if(strcmp(order,"exit")==0){
+        exit(0);       
+    }
+    else if(strcmp(order,"help")==0){
+        help();
+    }
+    else if(strcmp(order,"touch")==0){
+        touch();   
+    }
+    else if(strcmp(order,"cd")==0){
+        cd();
+    }
+    else{
+        printf("Unknown command\n");
+    }
+}
+
+void extract_args(char line[BUFFER_SIZE],int *status){
+    int i=0,j=0;
+    char order[16];
+    for(i=0;i<16;i++){
+	    if(line[i]!=' '&&line[i]!='\n'){
+	        order[i]=line[i];	
+	    }
+        else if(line[i]=='\n'){
+            i=0;
+            break;
+        }else{
+	        i++;
+	        break;
+	    }
+    }
+
+    read_order(order);
+
+}
+
+int main(){
+    while(true)
+    {
+        char cwd[1024];
+        char line[BUFFER_SIZE];
+        int status=0;
+        int i;
+        getcwd(cwd,1024);
+        printf("%s:-$ ",cwd);
+        fgets(line,BUFFER_SIZE,stdin);
+        if(strcmp(line,"\n")==0) continue;
+        extract_args(line,&status);
+       // extract_args();
+    }
+    return 0;
+}