int
dialhttp(Biobuf *netbio)
{
int netfd;
netfd = dial(netmkaddr(host, net, port), 0, 0, 0);
if(netfd < 0)
sysfatal("dial: %r");
if(usetls)
netfd = dotls(netfd);
Binit(netbio, netfd, OREAD);
return netfd;
}
char *
hello(char *me, int encrypted)
{
int ehlo;
String *r;
char *ret, *s, *t;
if (!encrypted) {
if(trysecure > 1){
if((ret = wraptls()) != nil)
return ret;
encrypted = 1;
}
/*
* Verizon fails to print the smtp greeting banner when it
* answers a call. Send a no-op in the hope of making it
* talk.
*/
if (autistic) {
dBprint("NOOP\r\n");
getreply(); /* consume the smtp greeting */
/* next reply will be response to noop */
}
switch(getreply()){
case 2:
break;
case 5:
return Giveup;
default:
return Retry;
}
}
ehlo = 1;
Again:
if(ehlo)
dBprint("EHLO %s\r\n", me);
else
dBprint("HELO %s\r\n", me);
switch (getreply()) {
case 2:
break;
case 5:
if(ehlo){
ehlo = 0;
goto Again;
}
return Giveup;
default:
return Retry;
}
r = s_clone(reply);
if(r == nil)
return Retry; /* Out of memory or couldn't get string */
/* Invariant: every line has a newline, a result of getcrlf() */
for(s = s_to_c(r); (t = strchr(s, '\n')) != nil; s = t + 1){
*t = '\0';
for (t = s; *t != '\0'; t++)
*t = toupper(*t);
if(!encrypted && trysecure &&
(strcmp(s, "250-STARTTLS") == 0 ||
strcmp(s, "250 STARTTLS") == 0)){
s_free(r);
return dotls(me);
}
if(tryauth && (encrypted || insecure) &&
(strncmp(s, "250 AUTH", strlen("250 AUTH")) == 0 ||
strncmp(s, "250-AUTH", strlen("250 AUTH")) == 0)){
ret = doauth(s + strlen("250 AUTH "));
s_free(r);
return ret;
}
}
s_free(r);
return 0;
}