//
// Run a simple shell command, and return the output to webOS.
//
static bool simple_command(LSHandle* lshandle, LSMessage *message, char *command) {
LSError lserror;
LSErrorInit(&lserror);
char run_command_buffer[MAXBUFLEN];
// Initialise the output buffer
strcpy(run_command_buffer, "{\"stdOut\": [");
// Run the command
if (run_command(command, true, run_command_buffer)) {
// Finalise the message ...
strcat(run_command_buffer, "], \"returnValue\": true}");
// fprintf(stderr, "Message is %s\n", run_command_buffer);
// and send it to webOS.
if (!LSMessageReply(lshandle, message, run_command_buffer, &lserror)) goto error;
}
else {
// Finalise the command output ...
strcat(run_command_buffer, "]");
// and use it in a failure report message.
if (!report_command_failure(lshandle, message, command, run_command_buffer+11, NULL)) goto end;
}
return true;
error:
LSErrorPrint(&lserror, stderr);
LSErrorFree(&lserror);
end:
return false;
}
bool get_file_method(LSHandle* lshandle, LSMessage *message, void *ctx) {
LSError lserror;
LSErrorInit(&lserror);
char run_command_buffer[MAXBUFLEN];
char command[MAXLINLEN];
json_t *object = json_parse_document(LSMessageGetPayload(message));
json_t *id;
// Extract the filename argument from the message
id = json_find_first_label(object, "filename");
if (!id || (id->child->type != JSON_STRING) ||
(strlen(id->child->text) >= MAXNAMLEN) ||
(strspn(id->child->text, ALLOWED_CHARS) != strlen(id->child->text))) {
if (!LSMessageRespond(message,
"{\"returnValue\": false, \"errorCode\": -1, "
"\"errorText\": \"Invalid or missing filename parameter\", "
"\"stage\": \"failed\"}",
&lserror)) goto error;
return true;
}
char filename[MAXNAMLEN];
sprintf(filename, "/media/internal/.temp/%s", id->child->text);
// Extract the url argument from the message
id = json_find_first_label(object, "url");
if (!id || (id->child->type != JSON_STRING) ||
(strlen(id->child->text) >= MAXLINLEN)) {
if (!LSMessageRespond(message,
"{\"returnValue\": false, \"errorCode\": -1, "
"\"errorText\": \"Invalid or missing url parameter\", "
"\"stage\": \"failed\"}",
&lserror)) goto error;
return true;
}
char url[MAXLINLEN];
strcpy(url, id->child->text);
if (!strncmp(url, "file://", 7)) {
strcpy(filename, url+7);
}
else {
/* Download the package */
snprintf(command, MAXLINLEN,
"/usr/bin/curl --create-dirs --insecure --location --fail --show-error --output %s %s 2>&1", filename, url);
strcpy(run_command_buffer, "{\"stdOut\": [");
if (run_command(command, true, run_command_buffer)) {
strcat(run_command_buffer, "], \"returnValue\": true, \"stage\": \"download\"}");
if (!LSMessageRespond(message, run_command_buffer, &lserror)) goto error;
}
else {
strcat(run_command_buffer, "]");
if (!report_command_failure(message, command, run_command_buffer+11, "\"stage\": \"failed\"")) goto end;
return true;
}
}
return read_file(message, filename, true);
error:
LSErrorPrint(&lserror, stderr);
LSErrorFree(&lserror);
end:
return false;
}
//
// Dump the contents of an sqlite3 database table
//
static bool dump_sqlite(LSMessage *message, char *database, char *table) {
LSError lserror;
LSErrorInit(&lserror);
char buffer[MAXBUFLEN];
char esc_buffer[MAXBUFLEN];
char line[MAXLINLEN];
// Local buffer to store the command
char command[MAXLINLEN];
sprintf(command, "sqlite3 %s .dump 2>&1", database);
// Is this the first line of output?
bool first = true;
// Was there an error in accessing any of the files?
bool error = false;
// Length of buffer before the last command
int lastlen = 0;
// Start execution of the command to list the config files.
FILE *fp = popen(command, "r");
// If the command cannot be started
if (!fp) {
// then report the error to webOS.
if (!report_command_failure(message, command, NULL, NULL)) goto end;
// The error report has been sent, so return to webOS.
return true;
}
if (!LSMessageRespond(message, "{\"stage\": \"start\", \"returnValue\": true}", &lserror)) goto error;
// Initialise the output message.
strcpy(buffer, "{");
lastlen = strlen(buffer);
// Loop through the list of files in the scripts directory.
while (fgets( line, sizeof line, fp)) {
// Chomp the newline
char *nl = strchr(line,'\n'); if (nl) *nl = 0;
if ((strlen(line) <= 13+strlen(table)+9) ||
strncmp(line, "INSERT INTO \"", 13) ||
strncmp(line+13, table, strlen(table)) ||
strncmp(line+13+strlen(table), "\" VALUES(", 9) ||
strncmp(line+strlen(line)-2, ");", 2)) {
continue;
}
*(line+strlen(line)-2) = 0;
// Push out a partial chunk
if (strlen(buffer) >= CHUNKSIZE) {
// Terminate the JSON array
if (!first) {
strcat(buffer, "], ");
}
strcat(buffer, "\"stage\": \"middle\", ");
// Check the error status, and return the current error status
if (error) {
strcat(buffer, "\"returnValue\": false}");
}
else {
strcat(buffer, "\"returnValue\": true}");
}
// fprintf(stderr, "Message is %s\n", buffer);
// Return the results to webOS.
if (!LSMessageRespond(message, buffer, &lserror)) goto error;
// This is now the first line of output
first = true;
// Initialise the output message.
strcpy(buffer, "{");
lastlen = strlen(buffer);
}
// Start or continue the JSON array
if (first) {
strcat(buffer, "\"results\": [");
lastlen = strlen(buffer);
first = false;
}
else if (strlen(buffer) > lastlen) {
strcat(buffer, ", ");
lastlen = strlen(buffer);
}
// Store the command output
strcat(buffer, "\"");
strcat(buffer, json_escape_str(line+13+strlen(table)+9, esc_buffer));
strcat(buffer, "\"");
}
// Terminate the JSON array
if (!first) {
strcat(buffer, "], ");
}
strcat(buffer, "\"stage\": \"end\", ");
// Check the close status of the process, and return the combined error status
if (pclose(fp) || error) {
strcat(buffer, "\"returnValue\": false}");
}
else {
strcat(buffer, "\"returnValue\": true}");
}
// fprintf(stderr, "Message is %s\n", buffer);
// Return the results to webOS.
if (!LSMessageRespond(message, buffer, &lserror)) goto error;
return true;
error:
LSErrorPrint(&lserror, stderr);
LSErrorFree(&lserror);
end:
return false;
}
