/*! Immediately send Error message
*
* @param value Error code to send
*/
void GdbInOut::sendErrorMessage(unsigned value) {
if (errorLogger != 0) {
char buff[200];
snprintf(buff, sizeof(buff), "Error response sent: E%2.2X", value);
errorLogger(buff);
}
putGdbPreamble();
putGdbPrintf("E%2.2X", value);
putGdbChecksum();
txGdbPkt();
}
/*
* Sets the current work-directory, starting with ~ for the home directory
*/
void setCwd(){
if (getcwd(cwd, sizeof(cwd)) != NULL){
char* lowerCaseUsername = malloc(strlen(username) + 1);
strcpy(lowerCaseUsername, username);
lowerCaseUsername[0] = tolower(lowerCaseUsername[0]);
char *s;
s = strstr(cwd, lowerCaseUsername);
if (s != NULL){
//Remove every character before up until the home directory and replace it with a ~
memmove(cwd, cwd + (s - cwd + strlen(username)) - 1, strlen(cwd+1));
cwd[0] = '~';
}
}else{
errorLogger(1, "getcwd() error");
}
}
/*! Immediately send Error message
*
* @param errorType One of E_Memory etc
* @param msg Message to send
*/
void GdbInOut::sendErrorMessage(ErrorType errorType, const char *msg) {
static const char *errStrings[] = {"fatal", "memType"};
if (errorType>(sizeof(errStrings)/sizeof(errStrings[0]))) {
errorType = E_Fatal;
}
if (errorLogger != 0) {
char buff[200];
snprintf(buff, sizeof(buff), "Error response sent: E.%s.%s", errStrings[errorType], msg);
errorLogger(buff);
}
putGdbPreamble();
putGdbPrintf("E.%s.", errStrings[errorType]);
while (*msg != '\0') {
putGdbEscapedChar(*msg++);
}
putGdbChecksum();
txGdbPkt();
}
/*
* Split line into command and arguments, then check via stat() if the file exists.
* If file exists or may be in path, execute it. Otherwise exit.
*/
int parseCmdLine(char* cmd){
char *splitCmd, *savePtr;
char *cmdArgs[MAX_ARGS];
int i = 1;
//Splits the string by space or tabs.
splitCmd = strtok_r(cmd, " ", &savePtr);
cmdArgs[0] = splitCmd;
//Chec if user is calling a file to execute, rather than a 'command' in Path
if(cmdArgs[0][0] == '/' || cmdArgs[0][0] == '.'){
struct stat fileStat;
if(stat(cmdArgs[0],&fileStat) < 0){
printf("The file " CCYAN "%s" CRESET " you were looking for %s, does unfortunately not exist there.\n", cmdArgs[0], username);
_exit(0);
}
}
//Split command/arguments as long as everything is split, or the limit is reached.
while (splitCmd != NULL) {
splitCmd = strtok_r(NULL, " ", &savePtr);
if(splitCmd != NULL){
if(i < MAX_ARGS - 1){
cmdArgs[i] = splitCmd;
i++;
}else{
errorLogger(1, "Sorry, you can't enter more than 14 arguments. Executing may fail now. \n");
break;
}
}
}
cmdArgs[i] = NULL;
//If command is succesfully executed, the program will never reach the printf or _exit();
execvp(cmdArgs[0], cmdArgs);
printf("%s, " CCYAN "%s" CRESET " is unfortunately not a command.\n", username, cmdArgs[0]);
_exit(0);
}
inline void error(Args&&... args) { errorLogger()->output(std::forward<Args>(args)...); }
