/**
* parse_command takes as input the send_message from the client and then
* parses it into the appropriate query. Stores into send_message the
* status to send back.
* Returns a db_operator.
**/
db_operator* parse_command(message* recv_message, message* send_message, status* parse_status) {
send_message->status = OK_WAIT_FOR_RESPONSE;
// check load flags here
db_operator *dbo = init_dbo();
// Here you parse the message and fill in the proper db_operator fields for
// now we just log the payload
cs165_log(stdout, recv_message->payload);
// Here, we give you a default parser, you are welcome to replace it with anything you want
*parse_status = parse_command_string(recv_message->payload, dsl_commands, dbo);
return dbo;
}
int main(int argc, const char *argv[]) {
int fd = open(*++argv, O_RDONLY);
struct _test *test_p;
char *dummy_main;
if (search_for_special(fd)) {
fprintf(stderr, "Couldn't find special character. Exiting\n");
exit(1);
}
test_p = parse_command_string(fd);
create_dummy_main(dummy_main, test_p);
create_file_for_compiling(fd, dummy_main, SP_NEWFILE_NAME_AND_LOC);
free(dummy_main);
exec_gxx(SP_NEWFILE_NAME_AND_LOC, "");
exec("./a.out");
return 0;
}
void shell_main_loop(char **cmdString, FILE *stream,
bool doPrompt) {
size_t cmdLen = 0;
char *commandArgs;
parse_status status;
if (doPrompt) {
prompt();
}
while(getline(cmdString, &cmdLen, stream) > 0) {
// Ignore if line is larger than maximum length.
if (cmdLen >= MAX_COMMAND_LENGTH) {
fprintf(stderr, "Command exceeds maximum allowed command "
"length (%d)\n", MAX_COMMAND_LENGTH);
free(*cmdString);
cmdLen = 0;
prompt();
continue;
}
// Parse command string.
status = parse_command_string(*cmdString, &commandArgs);
// Handle statuses after parsing.
if (status == CMD_EXIT) {
break;
} else if (status == CMD_NOCMD) {
// Print error
} else if (status == CMD_EXEC_ERR) {
fprintf(stderr, "Error executing command.\n");
}
if (doPrompt) {
prompt();
}
}
}
command_stream_t
stringsToStream(char **commandStrings, int *line_nums, int count)
{
int ii = 0;
command_t *commandArray = checked_malloc(sizeof(command_t) * count);
for (ii = 0; ii < count; ii++)
{
if (commandStrings[ii] == 0)
continue;
commandArray[ii] = parse_command_string(commandStrings[ii], line_nums[ii]);
}
command_stream_t commandStream = (command_stream_t) checked_malloc(sizeof(struct command_stream));
commandStream->commands = commandArray;
commandStream->curCommand = 0;
commandStream->numCommands = count;
return commandStream;
}
//*********************************************************************
static int read_ini_file(char *ini_str)
{
FILE *ofile ;
int slen ;
char *strptr ;
static char line[PATH_MAX] ;
// printf("reading %s\n", ini_str) ;
ofile = fopen(ini_str, "rt") ;
if (ofile == 0)
return errno ;
while (fgets(line, sizeof(line), ofile) != 0) {
// strip off newline char
slen = strlen(line) ;
strptr = &line[slen-1] ;
if (*strptr == '\n') {
*strptr-- = 0 ; // strip off newline
// slen-- ;
}
// next, find and strip off comments
strptr = strchr(line, ';') ;
if (strptr != 0)
*strptr-- = 0 ;
// skip blank lines
slen = strlen(line) ;
if (slen == 0)
continue;
strptr = &line[slen-1] ;
// then strip off tailing spaces
while (slen > 0 && *strptr == ' ') {
*strptr-- = 0 ;
slen-- ;
}
if (slen == 0)
continue;
// now we should have a simple line in field=value format.
// See if we can parse it...
// see whether we're dealing with an extention-color entry,
// or a flags entry
if (line[0] == '!') {
parse_command_string(line) ;
} else if (line[0] == '.') {
parse_color_entry(line) ;
} else if (line[0] >= '0' && line[0] <= '9') {
parse_color_entry(line) ;
} else if (line[0] == ':') {
parse_dir_color_entry(line) ;
} else {
// printf("line=%s", line) ;
parse_ini_line(line) ;
}
}
fclose(ofile) ;
return 0;
}
/*
* This function reads aliases and default module options from a configuration file
* (/etc/modprobe.conf syntax). It supports includes (only files, no directories).
*/
static void include_conf ( struct dep_t **first, struct dep_t **current, char *buffer, int buflen, int fd )
{
int continuation_line = 0;
// alias parsing is not 100% correct (no correct handling of continuation lines within an alias) !
while ( reads ( fd, buffer, buflen)) {
int l;
char *p;
p = strchr ( buffer, '#' );
if ( p )
*p = 0;
l = strlen ( buffer );
while ( l && isspace ( buffer [l-1] )) {
buffer [l-1] = 0;
l--;
}
if ( l == 0 ) {
continuation_line = 0;
continue;
}
if ( !continuation_line ) {
if (( strncmp ( buffer, "alias", 5 ) == 0 ) && isspace ( buffer [5] )) {
char *alias, *mod;
if ( parse_tag_value ( buffer + 6, &alias, &mod )) {
/* handle alias as a module dependent on the aliased module */
if ( !*current ) {
(*first) = (*current) = (struct dep_t *) xcalloc ( 1, sizeof ( struct dep_t ));
}
else {
(*current)-> m_next = (struct dep_t *) xcalloc ( 1, sizeof ( struct dep_t ));
(*current) = (*current)-> m_next;
}
(*current)-> m_name = bb_xstrdup ( alias );
(*current)-> m_isalias = 1;
if (( strcmp ( mod, "off" ) == 0 ) || ( strcmp ( mod, "null" ) == 0 )) {
(*current)-> m_depcnt = 0;
(*current)-> m_deparr = 0;
}
else {
(*current)-> m_depcnt = 1;
(*current)-> m_deparr = xmalloc ( 1 * sizeof( char * ));
(*current)-> m_deparr[0] = bb_xstrdup ( mod );
}
(*current)-> m_next = 0;
}
}
else if (( strncmp ( buffer, "options", 7 ) == 0 ) && isspace ( buffer [7] )) {
char *mod, *opt;
/* split the line in the module/alias name, and options */
if ( parse_tag_value ( buffer + 8, &mod, &opt )) {
struct dep_t *dt;
/* find the corresponding module */
for ( dt = *first; dt; dt = dt-> m_next ) {
if ( strcmp ( dt-> m_name, mod ) == 0 )
break;
}
if ( dt ) {
if ( ENABLE_FEATURE_MODPROBE_MULTIPLE_OPTIONS ) {
char* new_opt = NULL;
while( ( opt = parse_command_string( opt, &new_opt ) ) ) {
dt-> m_options = append_option( dt-> m_options, new_opt );
}
} else {
dt-> m_options = append_option( dt-> m_options, opt );
}
}
}
}
else if (( strncmp ( buffer, "include", 7 ) == 0 ) && isspace ( buffer [7] )) {
int fdi; char *filename = buffer + 8;
while ( isspace ( *filename ))
filename++;
if (( fdi = open ( filename, O_RDONLY )) >= 0 ) {
include_conf(first, current, buffer, buflen, fdi);
close(fdi);
}
}
}
}
}
/*
* This function reads aliases and default module options from a configuration file
* (/etc/modprobe.conf syntax). It supports includes (only files, no directories).
*/
static void include_conf(struct dep_t **first, struct dep_t **current, char *buffer, int buflen, int fd)
{
int continuation_line = 0;
// alias parsing is not 100% correct (no correct handling of continuation lines within an alias)!
while (reads(fd, buffer, buflen)) {
int l;
*strchrnul(buffer, '#') = '\0';
l = strlen(buffer);
while (l && isspace(buffer[l-1])) {
buffer[l-1] = '\0';
l--;
}
if (l == 0) {
continuation_line = 0;
continue;
}
if (continuation_line)
continue;
if (is_conf_command(buffer, "alias")) {
char *alias, *mod;
if (parse_tag_value(buffer + 6, &alias, &mod)) {
/* handle alias as a module dependent on the aliased module */
if (!*current) {
(*first) = (*current) = xzalloc(sizeof(struct dep_t));
} else {
(*current)->m_next = xzalloc(sizeof(struct dep_t));
(*current) = (*current)->m_next;
}
(*current)->m_name = xstrdup(alias);
(*current)->m_isalias = 1;
if ((strcmp(mod, "off") == 0) || (strcmp(mod, "null") == 0)) {
/*(*current)->m_depcnt = 0; - done by xzalloc */
/*(*current)->m_deparr = 0;*/
} else {
(*current)->m_depcnt = 1;
(*current)->m_deparr = xmalloc(sizeof(char *));
(*current)->m_deparr[0] = xstrdup(mod);
}
/*(*current)->m_next = NULL; - done by xzalloc */
}
} else if (is_conf_command(buffer, "options")) {
char *mod, *opt;
/* split the line in the module/alias name, and options */
if (parse_tag_value(buffer + 8, &mod, &opt)) {
struct dep_t *dt;
/* find the corresponding module */
for (dt = *first; dt; dt = dt->m_next) {
if (strcmp(dt->m_name, mod) == 0)
break;
}
if (dt) {
if (ENABLE_FEATURE_MODPROBE_MULTIPLE_OPTIONS) {
char* new_opt = NULL;
while ((opt = parse_command_string(opt, &new_opt))) {
dt->m_options = append_option(dt->m_options, new_opt);
}
} else {
dt->m_options = append_option(dt->m_options, opt);
}
}
}
} else if (is_conf_command(buffer, "include")) {
int fdi;
char *filename;
filename = skip_whitespace(buffer + 8);
fdi = open(filename, O_RDONLY);
if (fdi >= 0) {
include_conf(first, current, buffer, buflen, fdi);
close(fdi);
}
} else if (ENABLE_FEATURE_MODPROBE_BLACKLIST &&
(is_conf_command(buffer, "blacklist"))) {
char *mod;
struct dep_t *dt;
mod = skip_whitespace(buffer + 10);
for (dt = *first; dt; dt = dt->m_next) {
if (strcmp(dt->m_name, mod) == 0)
break;
}
if (dt)
dt->m_isblacklisted = 1;
}
} /* while (reads(...)) */
}