int main(int argc, char *argv[]) {
int param = 1;
myPrint(param);
return 0;
}
int main(int argc, char *argv[])
{
char cmd_buff[1024];
char *pinput;
char *fname = argv[1];
char *mode = "r";
FILE *f= fopen(fname, mode);
cmd_line *c, *backup;
char* extra_buff;
char* test = malloc(sizeof(char)*514);
char buf[1024];
if(argv[2] != NULL){ /*if trying to run batch with 2 filenames*/
err();
exit(0);
}
if(f == NULL){ /*if read is invalid*/
err();
exit(0);
}
dw = getcwd(buf, 1024); /*for global var accessible to function calls*/
while (1) {
/*INTERACTIVE MODE*/
if(argv[1] == NULL){
myPrint("myshell> ");
pinput = fgets(cmd_buff, 100, stdin);
c = parseCmdLine(cmd_buff);
backup = c;
while(backup != NULL){
processCmd(backup->c);
backup = backup->next;
}
/*BATCH MODE*/
} else if(argv[1] != NULL){
memset(cmd_buff,'\0',514);
pinput = fgets(cmd_buff, 514, f);
if (!pinput) { /*invalid fgets*/
exit(0);
}
if((extra_buff = strstr(cmd_buff,"\n"))!=NULL) {/*check if whole command has been taken in*/
if (check_space(cmd_buff)==0) /*if all blank spaces, don't print*/
continue;
else {
myPrint(cmd_buff); /*print command*/
collapsed_str(cmd_buff,test);
/*CATCH ERRORS RIGHT AWAY*/
if(exception1(test)==1){
err();
}
else if(exception2(test)==1) {
err();
}
else if(exception3(test)==1) {
continue;
}
/*PARSE*/
else {
c = parseCmdLine(cmd_buff);
backup = c;
while(backup != NULL){
processCmd(backup->c);
backup = backup->next;
}
free_cmdline(c);
}
}
}
/*COMMAND TOO LONG*/
if(extra_buff==NULL) {
myPrint(cmd_buff);
while(fgets(cmd_buff,1024,f)!=NULL) {/*keep getting more chars while you can*/
if((strlen(cmd_buff)<1023) || cmd_buff[1022]=='\n') { /*if new one is shorter than max, break*/
myPrint(cmd_buff);
memset(cmd_buff, '\0', 1024);
break;
}
else
myPrint(cmd_buff); /*else keep getting*/
memset(cmd_buff, '\0', 1024);
}
err();
}
}
}
free(test);
fclose(f);
return 0;
}
static void dumpBacktrace( unsigned int depth )
{
if ( depth == 0 )
depth = 20;
#if ((defined(linux) || defined(__linux__)) && !defined(ANDROID)) || defined(__FreeBSD__)
// Below there is a bunch of operations that are not safe in multi-threaded
// environment (dup()+close() combo, wait(), juggling with file descriptors).
// Maybe some problems could be resolved with dup2() and waitpid(), but it seems
// that if the operations on descriptors are not serialized, things will get nasty.
// That's why there's this lovely mutex here...
static QMutex sMutex;
QMutexLocker locker( &sMutex );
int stderr_fd = -1;
if ( access( "/usr/bin/c++filt", X_OK ) < 0 )
{
myPrint( "Stacktrace (c++filt NOT FOUND):\n" );
}
else
{
int fd[2];
if ( pipe( fd ) == 0 && fork() == 0 )
{
close( STDIN_FILENO ); // close stdin
// stdin from pipe
if ( dup( fd[0] ) != STDIN_FILENO )
{
QgsDebugMsg( "dup to stdin failed" );
}
close( fd[1] ); // close writing end
execl( "/usr/bin/c++filt", "c++filt", static_cast< char * >( nullptr ) );
perror( "could not start c++filt" );
exit( 1 );
}
myPrint( "Stacktrace (piped through c++filt):\n" );
stderr_fd = dup( STDERR_FILENO );
close( fd[0] ); // close reading end
close( STDERR_FILENO ); // close stderr
// stderr to pipe
int stderr_new = dup( fd[1] );
if ( stderr_new != STDERR_FILENO )
{
if ( stderr_new >= 0 )
close( stderr_new );
QgsDebugMsg( "dup to stderr failed" );
}
close( fd[1] ); // close duped pipe
}
void **buffer = new void *[ depth ];
int nptrs = backtrace( buffer, depth );
backtrace_symbols_fd( buffer, nptrs, STDERR_FILENO );
delete [] buffer;
if ( stderr_fd >= 0 )
{
int status;
close( STDERR_FILENO );
int dup_stderr = dup( stderr_fd );
if ( dup_stderr != STDERR_FILENO )
{
close( dup_stderr );
QgsDebugMsg( "dup to stderr failed" );
}
close( stderr_fd );
wait( &status );
}
#elif defined(Q_OS_WIN)
// TODO Replace with incoming QgsStackTrace
#else
Q_UNUSED( depth );
#endif
}
static void dumpBacktrace( unsigned int depth )
{
if ( depth == 0 )
depth = 20;
#if (defined(linux) && !defined(ANDROID)) || defined(__FreeBSD__)
int stderr_fd = -1;
if ( access( "/usr/bin/c++filt", X_OK ) < 0 )
{
myPrint( "Stacktrace (c++filt NOT FOUND):\n" );
}
else
{
int fd[2];
if ( pipe( fd ) == 0 && fork() == 0 )
{
close( STDIN_FILENO ); // close stdin
// stdin from pipe
if ( dup( fd[0] ) != STDIN_FILENO )
{
QgsDebugMsg( "dup to stdin failed" );
}
close( fd[1] ); // close writing end
execl( "/usr/bin/c++filt", "c++filt", ( char * ) 0 );
perror( "could not start c++filt" );
exit( 1 );
}
myPrint( "Stacktrace (piped through c++filt):\n" );
stderr_fd = dup( STDERR_FILENO );
close( fd[0] ); // close reading end
close( STDERR_FILENO ); // close stderr
// stderr to pipe
if ( dup( fd[1] ) != STDERR_FILENO )
{
QgsDebugMsg( "dup to stderr failed" );
}
close( fd[1] ); // close duped pipe
}
void **buffer = new void *[ depth ];
int nptrs = backtrace( buffer, depth );
backtrace_symbols_fd( buffer, nptrs, STDERR_FILENO );
delete [] buffer;
if ( stderr_fd >= 0 )
{
int status;
close( STDERR_FILENO );
if ( dup( stderr_fd ) != STDERR_FILENO )
{
QgsDebugMsg( "dup to stderr failed" );
}
close( stderr_fd );
wait( &status );
}
#elif defined(Q_OS_WIN)
void **buffer = new void *[ depth ];
SymSetOptions( SYMOPT_DEFERRED_LOADS | SYMOPT_INCLUDE_32BIT_MODULES | SYMOPT_UNDNAME );
SymInitialize( GetCurrentProcess(), "http://msdl.microsoft.com/download/symbols", TRUE );
unsigned short nFrames = CaptureStackBackTrace( 1, depth, buffer, NULL );
SYMBOL_INFO *symbol = ( SYMBOL_INFO * ) qgsMalloc( sizeof( SYMBOL_INFO ) + 256 );
symbol->MaxNameLen = 255;
symbol->SizeOfStruct = sizeof( SYMBOL_INFO );
for ( int i = 0; i < nFrames; i++ )
{
SymFromAddr( GetCurrentProcess(), ( DWORD64 )( buffer[ i ] ), 0, symbol );
symbol->Name[ 255 ] = 0;
myPrint( "%d: %s [%x]\n", i, symbol->Name, symbol->Address );
}
qgsFree( symbol );
#endif
}
void processCmd(cmd *c)
/*to take a single command and then process it based on whether it is exit, cd, etc
if it isnt any of them, pass off to execvp*/
{
int n = r_length(c->t);
char **argss = (char**)malloc(sizeof(char*) * (n+1));
arr_args(c->t, argss);
char *first = c->t->tok;
char buf[1024];
char *sw;
char *filename;
int status = 0;
pid_t cpid;
int x;
char *str;
char *curr;
char cwd[256];
if(strcmp(first, "exit") == 0){
if(((c->t->next) == NULL) && (c->next == NULL)){
exit(0);
} else {
err();
}
}else if (strcmp(first, "cd") == 0){
if(r_length(c->t) <= 2){
if(c->next == NULL){
if(c->t->next == NULL){
chdir((const char*) getenv("HOME"));
} else if(chdir((const char*)c->t->next->tok) == -1) {
err();
} else{
curr=getcwd(cwd, sizeof(cwd));
chdir(curr);
setenv("PWD",curr,1);
}
} else {
err();
}
}else {
err();
}
} else if (strcmp(first, "pwd") == 0){
if((c->t->next == NULL) && (c->next == NULL)){
sw = getcwd(buf, 1024);
if(sw != NULL){
myPrint(sw);
write(1, "\n", 1);
}
else{
err();
}
} else{
err();
}
}else {
if(cmd_length(c) > 2){
err();
}
if(cmd_length(c) == 1){
cpid = fork();
waitpid(-1, &status, 0);
if(cpid == 0){
if(execvp(first, argss) == -1) {
err();
exit(-1);
}
kill(cpid, SIGKILL);
}
}
if(cmd_length(c) == 2){
str =malloc((strlen(dw)+2)*sizeof(char));
strcpy(str, dw);
strcat(str, "/");
filename = strcat(str, c->next->t->tok);
if((x = open(filename, O_WRONLY | O_CREAT | O_EXCL, S_IRUSR | S_IWUSR)) != -1){
cpid = fork();
waitpid(-1, &status, 0);
if(cpid==0){
dup2(x, 1);
if(execvp(first, argss) == -1) {
err();
exit(-1);
}
kill(cpid, SIGKILL);
close(x);
free(str);
}
dup2(1,1);
} else {
err();
}
}
}
free(argss);
}
static void dumpBacktrace( unsigned int depth )
{
if ( depth == 0 )
depth = 20;
#if ((defined(linux) || defined(__linux__)) && !defined(ANDROID)) || defined(__FreeBSD__)
int stderr_fd = -1;
if ( access( "/usr/bin/c++filt", X_OK ) < 0 )
{
myPrint( "Stacktrace (c++filt NOT FOUND):\n" );
}
else
{
int fd[2];
if ( pipe( fd ) == 0 && fork() == 0 )
{
close( STDIN_FILENO ); // close stdin
// stdin from pipe
if ( dup( fd[0] ) != STDIN_FILENO )
{
QgsDebugMsg( "dup to stdin failed" );
}
close( fd[1] ); // close writing end
execl( "/usr/bin/c++filt", "c++filt", static_cast< char * >( nullptr ) );
perror( "could not start c++filt" );
exit( 1 );
}
myPrint( "Stacktrace (piped through c++filt):\n" );
stderr_fd = dup( STDERR_FILENO );
close( fd[0] ); // close reading end
close( STDERR_FILENO ); // close stderr
// stderr to pipe
int stderr_new = dup( fd[1] );
if ( stderr_new != STDERR_FILENO )
{
if ( stderr_new >= 0 )
close( stderr_new );
QgsDebugMsg( "dup to stderr failed" );
}
close( fd[1] ); // close duped pipe
}
void **buffer = new void *[ depth ];
int nptrs = backtrace( buffer, depth );
backtrace_symbols_fd( buffer, nptrs, STDERR_FILENO );
delete [] buffer;
if ( stderr_fd >= 0 )
{
int status;
close( STDERR_FILENO );
int dup_stderr = dup( stderr_fd );
if ( dup_stderr != STDERR_FILENO )
{
close( dup_stderr );
QgsDebugMsg( "dup to stderr failed" );
}
close( stderr_fd );
wait( &status );
}
#elif defined(Q_OS_WIN)
void **buffer = new void *[ depth ];
SymSetOptions( SYMOPT_DEFERRED_LOADS | SYMOPT_INCLUDE_32BIT_MODULES | SYMOPT_UNDNAME );
SymInitialize( GetCurrentProcess(), "http://msdl.microsoft.com/download/symbols;http://download.osgeo.org/osgeo4w/symstore", TRUE );
unsigned short nFrames = CaptureStackBackTrace( 1, depth, buffer, nullptr );
SYMBOL_INFO *symbol = ( SYMBOL_INFO * ) qgsMalloc( sizeof( SYMBOL_INFO ) + 256 );
symbol->MaxNameLen = 255;
symbol->SizeOfStruct = sizeof( SYMBOL_INFO );
IMAGEHLP_LINE *line = ( IMAGEHLP_LINE * ) qgsMalloc( sizeof( IMAGEHLP_LINE ) );
line->SizeOfStruct = sizeof( IMAGEHLP_LINE );
for ( int i = 0; i < nFrames; i++ )
{
DWORD dwDisplacement;
SymFromAddr( GetCurrentProcess(), ( DWORD64 )( buffer[ i ] ), 0, symbol );
symbol->Name[ 255 ] = 0;
if ( SymGetLineFromAddr( GetCurrentProcess(), ( DWORD64 )( buffer[i] ), &dwDisplacement, line ) )
{
myPrint( "%s(%d) : (%s) frame %d, address %x\n", line->FileName, line->LineNumber, symbol->Name, i, symbol->Address );
}
else
{
myPrint( "%s(%d) : (%s) unknown source location, frame %d, address %x [GetLastError()=%d]\n", __FILE__, __LINE__, symbol->Name, i, symbol->Address, GetLastError() );
}
}
qgsFree( symbol );
qgsFree( line );
#else
Q_UNUSED( depth );
#endif
}
void execute(char *command)
{
int n = count_carrots(command);
if(n>1){
myError();
return;
}
// char s[514];
//strcpy(s,command);
// char* c = strtok(s, " ");
if(!strncmp(command,">",1)){
myError();
return;
}
command = strtok(command, ">");
if(command==NULL)
return;
/*if(redir == 2){
myError();
return;
}*/
char* fi = strtok(NULL, " > ");
// fi = removeleadingspace(fi);
// fi = strtok(fi, " ");
//fi = strtok(fi, "\n");
if(n == 1){
sll* tempfi = parse_args(fi);
if(sll_length(tempfi) > 1){
myError();
sll_free(tempfi);
return;
}
sll_free(tempfi);
}
int des = 1;
if(fi!=NULL) {
if(!strncmp(command, "exit",4)||
!strncmp(command, "pwd",3) ||
!strncmp(command, "cd",2)){
myError();
return;
}
removeleadingspace(fi);
fi = strtok(fi, " ");
fi = strtok(fi, "\n");
des = open(fi, O_WRONLY | O_CREAT | O_EXCL, 0666);
if(des==-1){
myError();
return;
}
}
/*int bit = redirect(command);
char* fname;
if(bit == 2){
myError();
return;
}
else if(bit == 1)
{
// command to redirect
command =strtok(command, ">");
fname = strtok(NULL, ">");
}*/
if(!strncmp(command, "exit",4)){
// myPrint(command);
sll* temp = parse_args(command);
if(sll_length(temp)==1){
sll_free(temp);
exit(0);
}
else{
sll_free(temp);
myError();
return;
}
}
else if(!strncmp(command, " ",1)) {
//separate(command, " ", execute);
execute(removeleadingspace(command));
return;
}
else if(!strncmp(command, "cd",2)) {
//myPrint(command);
//myPrint("\n");
sll* temp = parse_args(command);
if(sll_length(temp)>2){
myError();
sll_free(temp);
return;
}
else if(sll_length(temp) == 1 &&
!strcmp(strtok(temp->s, "\n"),"cd")){
chdir(getenv("HOME"));
return;
}
//char* dir = strtok(command, " ");
char*dir = temp->s;
// if(strtok(NULL, " ") == NULL){
//myError();
// return;
//}
if(strlen(dir)!=strlen("cd")&&strcmp(dir,"cd\n")){
myError();
return;
}
//dir = strtok(NULL, " ");
dir = temp->next->s;
char* dir2 = strtok(dir, "\n");
if(dir2==NULL)
dir2 = getenv("HOME");
if(chdir(dir2))
myError();
return;
}
else if(!strcmp(command, "\n"))
return;
else{
pid_t pid = fork();
// child process executes command
if(pid==0)
{
if(!strncmp(command, "pwd",3)){
// myPrint(command);
// myPrint("\n");
sll* temp = parse_args(command);
if(sll_length(temp) > 1){
sll_free(temp);
myError();
exit(0);
}
sll_free(temp);
char dir[514];
//if(!bit)
dup2(des, STDOUT_FILENO);
myPrint(getcwd(dir, 514));
//else
// outp(getcwd(dir, 514),fname);
dup2(des, STDOUT_FILENO);
myPrint("\n");
exit(0);
}
// else if(!strncmp(command, " ",1)) {
// separate(command, " ", execute);
//}
else{
sll* list = parse_args(command);
char** argz = sll_to_array(list);
// myPrint(command);
//myPrint("\n");
dup2(des, STDOUT_FILENO);
if(execvp(argz[0], argz) == -1){
myError();
exit(0);
}
sll_free(list);
free(argz);
}
//else
//myError();
dup2(des, STDOUT_FILENO);
myPrint("\n");
exit(0);
}
//parent process waits
else
{
int ch;
waitpid(pid, &ch, 0);
return;
}
}
}
void ESOF_Callback(void) {
myPrint(" USB ESOF", 32);
}
void SUSP_Callback(void) {
myPrint(" USB Suspend", 32);
}
void WKUP_Callback(void) {
myPrint(" USB Wakeup", 32);
}
void ERR_Callback(void) {
myPrint(" USB Error", 32);
}
void RESET_Callback(void) {
// print to display
myPrint(" USB Reset", 32);
}
