/*
* Creates a new session for the user.
*/
static struct session *create_session(const char *user,
const struct http_message *hm) {
/* Find first available slot or use the oldest one. */
struct session *s = NULL;
struct session *oldest_s = s_sessions;
for (int i = 0; i < NUM_SESSIONS; i++) {
if (s_sessions[i].id == 0) {
s = &s_sessions[i];
break;
}
if (s_sessions[i].last_used < oldest_s->last_used) {
oldest_s = &s_sessions[i];
}
}
if (s == NULL) {
destroy_session(oldest_s);
printf("Evicted %" INT64_X_FMT "/%s\n", oldest_s->id, oldest_s->user);
s = oldest_s;
}
/* Initialize new session. */
s->created = s->last_used = mg_time();
s->user = strdup(user);
s->lucky_number = rand();
/* Create an ID by putting various volatiles into a pot and stirring. */
cs_sha1_ctx ctx;
cs_sha1_init(&ctx);
cs_sha1_update(&ctx, (const unsigned char *) hm->message.p, hm->message.len);
cs_sha1_update(&ctx, (const unsigned char *) s, sizeof(*s));
unsigned char digest[20];
cs_sha1_final(digest, &ctx);
s->id = *((uint64_t *) digest);
return s;
}
void esp_init_conf(struct v7 *v7) {
#ifndef RTOS_TODO
int valid;
unsigned char sha[20];
cs_sha1_ctx ctx;
cs_sha1_init(&ctx);
cs_sha1_update(&ctx, (unsigned char *) V7_DEV_CONF_STR,
strnlen(V7_DEV_CONF_STR, 0x1000 - 20));
cs_sha1_final(sha, &ctx);
valid = (memcmp(V7_DEV_CONF_SHA1, sha, 20) == 0);
sj_init_conf(v7, valid ? V7_DEV_CONF_STR : NULL);
#else
sj_init_conf(v7, NULL);
#endif
}