#include <fcgi_stdio.h>
#include <openssl/sha.h>
#include <stdarg.h>
+#include <sys/types.h>
+#include <sys/stat.h>
#include "common.h"
#include "sensor.h"
*/
static void IdentifyHandler(FCGIContext *context, char *params) {
bool ident_sensors = false, ident_actuators = false;
- bool has_control = FCGI_HasControl(context, getenv("COOKIE_STRING"));
+ char control_key[CONTROL_KEY_BUFSIZ];
+ bool has_control;
int i;
+ snprintf(control_key, CONTROL_KEY_BUFSIZ, "%s", getenv("COOKIE_STRING"));
+ has_control = FCGI_HasControl(context, control_key);
+
FCGIValue values[2] = {{"sensors", &ident_sensors, FCGI_BOOL_T},
{"actuators", &ident_actuators, FCGI_BOOL_T}};
if (!FCGI_ParseRequest(context, params, values, 2))
FCGI_BeginJSON(context, STATUS_OK);
FCGI_JSONPair("description", "MCTX3420 Server API (2013)");
FCGI_JSONPair("build_date", __DATE__ " " __TIME__);
+ struct timespec t;
+ t.tv_sec = 0; t.tv_nsec = 0;
+ clock_getres(CLOCK_MONOTONIC, &t);
+ FCGI_JSONDouble("clock_getres", TIMEVAL_TO_DOUBLE(t));
FCGI_JSONLong("api_version", API_VERSION);
FCGI_JSONBool("logged_in", has_control);
- FCGI_JSONPair("friendly_name", has_control ? context->friendly_name : "");
+ FCGI_JSONPair("user_name", has_control ? context->user_name : "");
+
//Sensor and actuator information
if (ident_sensors) {
}
/**
- * Gives the user a key that determines who has control over
- * the system at any one time. The key can be forcibly generated, revoking
- * any previous control keys. To be used in conjunction with HTTP
- * basic authentication.
+ * Given an authorised user, attempt to set the control over the system.
+ * Modifies members in the context structure appropriately if successful.
* @param context The context to work in
- * @param force Whether to force key generation or not.
- * @return true on success, false otherwise (eg someone else already in control)
+ * @param user_name - Name of the user
+ * @param user_type - Type of the user, passed after successful authentication
+ * @return true on success, false otherwise (eg someone else already in control)
*/
-bool FCGI_LockControl(FCGIContext *context, bool force) {
+bool FCGI_LockControl(FCGIContext *context, const char * user_name, UserType user_type)
+{
+ // Get current time
time_t now = time(NULL);
bool expired = now - context->control_timestamp > CONTROL_TIMEOUT;
+ int i;
- if (force || !*(context->control_key) || expired)
+ // Can't lock control if: User not actually logged in (sanity), or key is still valid and the user is not an admin
+ if (user_type == USER_UNAUTH ||
+ (user_type != USER_ADMIN && !expired && *(context->control_key) != '\0'))
+ return false;
+
+ // Release any existing control (if any)
+ FCGI_ReleaseControl(context);
+
+ // Set timestamp
+ context->control_timestamp = now;
+
+ // Generate a SHA1 hash for the user
+ SHA_CTX sha1ctx;
+ unsigned char sha1[20];
+ i = rand();
+ SHA1_Init(&sha1ctx);
+ SHA1_Update(&sha1ctx, &now, sizeof(now));
+ SHA1_Update(&sha1ctx, &i, sizeof(i));
+ SHA1_Final(sha1, &sha1ctx);
+ for (i = 0; i < sizeof(sha1); i++)
+ sprintf(context->control_key + i * 2, "%02x", sha1[i]);
+
+ // Set the IPv4 address
+ snprintf(context->control_ip, 16, "%s", getenv("REMOTE_ADDR"));
+
+ // Set the user name
+ int uname_len = strlen(user_name);
+ i = snprintf(context->user_name, sizeof(context->user_name), "%s", user_name);
+ if (i < uname_len) {
+ Log(LOGERR, "Username at %d characters too long (limit %d)",
+ uname_len, sizeof(context->user_name));
+ return false; // :-(
+ }
+ // Set the user type
+ context->user_type = user_type;
+
+ // Build the user directory
+ i = snprintf(context->user_dir, sizeof(context->user_dir), "%s/%s",
+ g_options.experiment_dir, context->user_name);
+ if (i >= sizeof(context->user_dir)) {
+ Log(LOGERR, "Experiment dir too long (required %d, limit %d)",
+ i, sizeof(context->user_dir));
+ return false;
+ }
+
+ Log(LOGDEBUG, "User dir: %s", context->user_dir);
+ // Create directory
+ if (mkdir(context->user_dir, 0777) != 0 && errno != EEXIST)
{
- SHA_CTX sha1ctx;
- unsigned char sha1[20];
- int i = rand();
-
- SHA1_Init(&sha1ctx);
- SHA1_Update(&sha1ctx, &now, sizeof(now));
- SHA1_Update(&sha1ctx, &i, sizeof(i));
- SHA1_Final(sha1, &sha1ctx);
-
- context->control_timestamp = now;
- for (i = 0; i < 20; i++)
- sprintf(context->control_key + i * 2, "%02x", sha1[i]);
- snprintf(context->control_ip, 16, "%s", getenv("REMOTE_ADDR"));
- return true;
+ Log(LOGERR, "Couldn't create user directory %s - %s",
+ context->user_dir, strerror(errno));
+ return false; // :-(
}
- return false;
+
+ return true; // :-)
}
/**
*/
void FCGI_ReleaseControl(FCGIContext *context) {
*(context->control_key) = 0;
+ // Note: context->user_name should *not* be cleared
return;
}
printf("\t\"module\" : \"%s\"", context->current_module);
FCGI_JSONLong("status", status_code);
//Time and running statistics
- struct timeval now;
- gettimeofday(&now, NULL);
+ struct timespec now;
+ clock_gettime(CLOCK_MONOTONIC, &now);
FCGI_JSONDouble("start_time", TIMEVAL_TO_DOUBLE(g_options.start_time));
FCGI_JSONDouble("current_time", TIMEVAL_TO_DOUBLE(now));
FCGI_JSONDouble("running_time", TIMEVAL_DIFF(now, g_options.start_time));
*/
void FCGI_JSONDouble(const char *key, double value)
{
- printf(",\r\n\t\"%s\" : %f", key, value);
+ printf(",\r\n\t\"%s\" : %.9f", key, value);
}
/**
while (FCGI_Accept() >= 0) {
ModuleHandler module_handler = NULL;
- char module[BUFSIZ], params[BUFSIZ];
- //Don't need to copy if we're not modifying string contents
- const char *cookie = getenv("COOKIE_STRING");
+ char module[BUFSIZ], params[BUFSIZ], control_key[CONTROL_KEY_BUFSIZ];
//strncpy doesn't zero-truncate properly
snprintf(module, BUFSIZ, "%s", getenv("DOCUMENT_URI_LOCAL"));
snprintf(params, BUFSIZ, "%s", getenv("QUERY_STRING"));
+ //Hack to get the nameless cookie only
+ snprintf(control_key, CONTROL_KEY_BUFSIZ, "%s", getenv("COOKIE_STRING"));
+
Log(LOGDEBUG, "Got request #%d - Module %s, params %s", context.response_number, module, params);
- Log(LOGDEBUG, "Cookie: %s", cookie);
+ Log(LOGDEBUG, "Control key: %s", control_key);
//Remove trailing slashes (if present) from module query
if (module_handler)
{
- //if (module_handler != Login_Handler && module_handler != IdentifyHandler)
+ //if (module_handler != Login_Handler && module_handler != IdentifyHandler && module_handler)
if (false) // Testing
{
- if (!FCGI_HasControl(&context, cookie))
+ if (!FCGI_HasControl(&context, control_key))
{
FCGI_RejectJSON(&context, "Please login. Invalid control key.");
continue;
git.ucc.asn.au / matches / MCTX3420.git / blobdiff
UCC git Repository :: git.ucc.asn.au