#include <signal.h>
enum state {
+ SENDING_GREETING,
RECEIVING_USER_QUESTION,
+ SENDING_ANSWER_PREFIX,
SENDING_ANSWER,
FINISHED
};
static uint16_t state_flag_map[] = {
+ [SENDING_GREETING] = TEVENT_FD_WRITE,
[RECEIVING_USER_QUESTION] = TEVENT_FD_READ,
+ [SENDING_ANSWER_PREFIX] = TEVENT_FD_WRITE,
[SENDING_ANSWER] = TEVENT_FD_WRITE,
[FINISHED] = 0
};
int fd;
/* The question we read from client. */
char *question;
+ /* The answer to the client. */
+ const char *answer;
/* How many bytes of the reply we sent so far. */
size_t bytes_sent;
/* Our server. */
struct client *clients[5];
int fd;
struct tevent_fd *fde;
+ const char *last_answer;
};
static ssize_t write_string(int fd, const char *str)
ssize_t len;
switch (c->state) {
+ case SENDING_GREETING:
+ if (!send_string(c, "Welcome. Please ask your question.\n"))
+ goto fail;
+ break;
case RECEIVING_USER_QUESTION:
len = read_string(c->fd, &c->question);
if (len <= 0)
goto fail;
if (input_finished(c->question)) {
- unsigned int i;
-
- for (i = 0; c->question[i]; i++)
- c->question[i] = toupper(c->question[i]);
- set_state(c, SENDING_ANSWER);
+ c->answer = talloc_steal(c, c->oserver->last_answer);
+ c->oserver->last_answer
+ = talloc_steal(c->oserver, c->question);
+ set_state(c, SENDING_ANSWER_PREFIX);
}
break;
+ case SENDING_ANSWER_PREFIX:
+ if (!send_string(c, "I believe a better question is "))
+ goto fail;
+ break;
case SENDING_ANSWER:
- if (!send_string(c, c->question))
+ if (!send_string(c, c->answer))
goto fail;
break;
default:
if (client->fd < 0)
err(1, "Accepting client connection");
- client->state = RECEIVING_USER_QUESTION;
+ client->state = SENDING_GREETING;
client->bytes_sent = 0;
client->question = talloc_strdup(client, "");
client->oserver = oserver;
talloc_free(oserver);
return NULL;
}
-
+ oserver->last_answer = talloc_strdup(oserver,
+ "how many manly men mendaciously"
+ " mention mending mansions?\n");
+
talloc_set_destructor(oserver, destroy_oserver);
if (setsockopt(oserver->fd, SOL_SOCKET, SO_REUSEADDR,