/*
* Build a comma separated string of smtp recipient email addresses
* for the email message To-header.
*/
void
build_to_header_rcpt_addrs(smtp_t *smtp)
{
char *fetched_email;
char *email_to_addrs;
int email_addrs_max;
if (smtp == NULL) return;
email_to_addrs = smtp->email_to;
smtp->email_it = 0;
email_addrs_max = (SMTP_BUFFER_MAX / SMTP_EMAIL_ADDR_MAX_LENGTH) - 1;
while ((fetched_email = fetch_next_email(smtp)) != NULL) {
/* First email address, so no need for "," */
if (smtp->email_it == 0) {
snprintf(email_to_addrs, SMTP_EMAIL_ADDR_MAX_LENGTH, "%s", fetched_email);
}
else {
strcat(email_to_addrs, ", ");
strncat(email_to_addrs, fetched_email, SMTP_EMAIL_ADDR_MAX_LENGTH);
}
smtp->email_it++;
if (smtp->email_it >= email_addrs_max)
break;
}
smtp->email_it = 0;
}
/*
* Build a comma separated string of smtp recipient email addresses
* for the email message To-header.
*/
static void
build_to_header_rcpt_addrs(smtp_t *smtp)
{
char *fetched_email;
char *email_to_addrs;
int bytes_available = SMTP_BUFFER_MAX - 1;
int bytes_not_written, bytes_to_write;
if (smtp == NULL)
return;
email_to_addrs = smtp->email_to;
smtp->email_it = 0;
while (1) {
fetched_email = fetch_next_email(smtp);
if (fetched_email == NULL)
break;
bytes_not_written = 0;
bytes_to_write = strlen(fetched_email);
if (smtp->email_it == 0) {
if (bytes_available < bytes_to_write)
break;
} else {
if (bytes_available < 2 + bytes_to_write)
break;
/* Prepend with a comma and space to all non-first email addresses */
*email_to_addrs++ = ',';
*email_to_addrs++ = ' ';
bytes_available -= 2;
}
bytes_not_written = snprintf(email_to_addrs, bytes_to_write + 1, "%s", fetched_email) - bytes_to_write;;
if (bytes_not_written > 0) {
/* Inconsistent state, no choice but to break here and do nothing */
break;
}
email_to_addrs += bytes_to_write;
bytes_available -= bytes_to_write;
smtp->email_it++;
}
smtp->email_it = 0;
}
/* RCPT command processing */
static int
rcpt_cmd(thread_t * thread)
{
smtp_t *smtp = THREAD_ARG(thread);
char *buffer;
char *fetched_email;
buffer = (char *) MALLOC(SMTP_BUFFER_MAX);
/* We send RCPT TO command multiple time to add all our email receivers.
* --rfc821.3.1
*/
fetched_email = fetch_next_email(smtp);
snprintf(buffer, SMTP_BUFFER_MAX, SMTP_RCPT_CMD, fetched_email);
if (send(thread->u.fd, buffer, strlen(buffer), 0) == -1)
smtp->stage = ERROR;
FREE(buffer);
return 0;
}
static int
rcpt_code(thread_t * thread, int status)
{
smtp_t *smtp = THREAD_ARG(thread);
char *fetched_email;
if (status == 250) {
smtp->email_it++;
fetched_email = fetch_next_email(smtp);
if (!fetched_email)
smtp->stage++;
} else {
log_message(LOG_INFO, "Error processing RCPT cmd on SMTP server %s."
" SMTP status code = %d"
, FMT_SMTP_HOST()
, status);
smtp->stage = ERROR;
}
return 0;
}
static int
rcpt_code(thread_t * thread, int status)
{
smtp_t *smtp = THREAD_ARG(thread);
char *fetched_email;
if (status == 250) {
smtp->email_it++;
fetched_email = fetch_next_email(smtp);
if (!fetched_email)
smtp->stage++;
} else {
log_message(LOG_INFO, "Error processing RCPT cmd on SMTP server [%s]:%d."
" SMTP status code = %d"
, inet_sockaddrtos(&global_data->smtp_server)
, SMTP_PORT, status);
smtp->stage = ERROR;
}
return 0;
}
