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Add REST session handling.

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Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
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Pol Henarejos
2026-04-20 13:01:23 +02:00
parent 7db11c21f6
commit fa07b59cc7
2 changed files with 126 additions and 0 deletions
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84
src/usb/lwip/rest.c
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@@ -17,6 +17,90 @@
#include "rest.h"
#include <strings.h>
#include "random.h"
#define REST_MAX_SESSIONS 4
static rest_session_t rest_sessions[REST_MAX_SESSIONS] = {0};
rest_session_t *rest_session_create(const rest_session_role_t role, rest_session_status_t status) {
for (int i = 0; i < REST_MAX_SESSIONS; i++) {
if (rest_sessions[i].status == REST_SESSION_UNKNOWN || rest_sessions[i].status == REST_SESSION_EXPIRED || rest_sessions[i].status == REST_SESSION_TERMINATED) {
memset(&rest_sessions[i], 0, sizeof(rest_session_t));
rest_sessions[i].status = status;
rest_sessions[i].role = role;
random_fill_buffer(rest_sessions[i].id, sizeof(rest_sessions[i].id));
rest_sessions[i].created_at = get_rtc_time();
rest_sessions[i].last_activity_timestamp = rest_sessions[i].created_at;
return &rest_sessions[i];
}
}
return NULL;
}
rest_session_t *rest_session_get(const uint8_t *id, size_t id_len) {
if (id == NULL || id_len != 16) {
return NULL;
}
for (int i = 0; i < REST_MAX_SESSIONS; i++) {
if (rest_sessions[i].status != REST_SESSION_UNKNOWN && rest_sessions[i].status != REST_SESSION_EXPIRED && rest_sessions[i].status != REST_SESSION_TERMINATED) {
if (memcmp(rest_sessions[i].id, id, sizeof(rest_sessions[i].id)) == 0) {
return &rest_sessions[i];
}
}
}
return NULL;
}
int rest_session_terminate(const uint8_t *id, size_t id_len) {
rest_session_t *session = rest_session_get(id, id_len);
if (session == NULL) {
return -1;
}
session->status = REST_SESSION_TERMINATED;
return 0;
}
int rest_session_update_activity(const uint8_t *id, size_t id_len) {
rest_session_t *session = rest_session_get(id, id_len);
if (session == NULL) {
return -1;
}
session->last_activity_timestamp = get_rtc_time();
return 0;
}
int rest_session_set_status(const uint8_t *id, size_t id_len, rest_session_status_t status) {
rest_session_t *session = rest_session_get(id, id_len);
if (session == NULL) {
return -1;
}
session->status = status;
return 0;
}
int rest_session_set_role(const uint8_t *id, size_t id_len, rest_session_role_t role) {
rest_session_t *session = rest_session_get(id, id_len);
if (session == NULL) {
return -1;
}
session->role = role;
return 0;
}
int rest_session_cleanup_expired(time_t expiration_time) {
int count = 0;
time_t now = get_rtc_time();
for (int i = 0; i < REST_MAX_SESSIONS; i++) {
if (rest_sessions[i].status != REST_SESSION_UNKNOWN && rest_sessions[i].status != REST_SESSION_EXPIRED && rest_sessions[i].status != REST_SESSION_TERMINATED) {
if (now - rest_sessions[i].last_activity_timestamp > expiration_time) {
rest_sessions[i].status = REST_SESSION_EXPIRED;
count++;
}
}
}
return count;
}
#ifdef DEBUG_APDU
void rest_debug_dump_payload(const char *tag, const char *buffer, size_t len) {