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/* ========================================================================
* Copyright 2008 Mark Crispin
* ========================================================================
*/
/*
* Program: SSL standard I/O routines for server use
*
* Author: Mark Crispin
*
* Date: 22 September 1998
* Last Edited: 19 November 2008
*
* Previous versions of this file were
*
* Copyright 1988-2006 University of Washington
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
*/
/* Get character
* Returns: character or EOF
*/
int PBIN (void)
{
if (!sslstdio) {
int ret;
do {
clearerr (stdin);
ret = getchar ();
} while ((ret == EOF) && !feof (stdin) && ferror (stdin) &&
(errno == EINTR));
return ret;
}
if (!ssl_getdata (sslstdio->sslstream)) return EOF;
/* one last byte available */
sslstdio->sslstream->ictr--;
return (int) *(sslstdio->sslstream->iptr)++;
}
/* Get string
* Accepts: destination string pointer
* number of bytes available
* Returns: destination string pointer or NIL if EOF
*/
char *PSIN (char *s,int n)
{
int i,c;
if (start_tls) { /* doing a start TLS? */
ssl_server_init (start_tls);/* enter the mode */
start_tls = NIL; /* don't do this again */
}
if (!sslstdio) {
char *ret;
do {
clearerr (stdin);
ret = fgets (s,n,stdin);
} while (!ret && !feof (stdin) && ferror (stdin) && (errno == EINTR));
return ret;
}
for (i = c = 0, n-- ; (c != '\n') && (i < n); sslstdio->sslstream->ictr--) {
if ((sslstdio->sslstream->ictr <= 0) && !ssl_getdata (sslstdio->sslstream))
return NIL; /* read error */
c = s[i++] = *(sslstdio->sslstream->iptr)++;
}
s[i] = '\0'; /* tie off string */
return s;
}
/* Get record
* Accepts: destination string pointer
* number of bytes to read
* Returns: T if success, NIL otherwise
*/
long PSINR (char *s,unsigned long n)
{
unsigned long i;
if (start_tls) { /* doing a start TLS? */
ssl_server_init (start_tls);/* enter the mode */
start_tls = NIL; /* don't do this again */
}
if (sslstdio) return ssl_getbuffer (sslstdio->sslstream,n,s);
/* non-SSL case */
while (n && ((i = fread (s,1,n,stdin)) || (errno == EINTR))) s += i,n -= i;
return n ? NIL : LONGT;
}
/* Wait for stdin input
* Accepts: timeout in seconds
* Returns: T if have input on stdin, else NIL
*/
long INWAIT (long seconds)
{
return (sslstdio ? ssl_server_input_wait : server_input_wait) (seconds);
}
/* Put character
* Accepts: character
* Returns: character written or EOF
*/
int PBOUT (int c)
{
if (!sslstdio) return putchar (c);
/* flush buffer if full */
if (!sslstdio->octr && PFLUSH ()) return EOF;
sslstdio->octr--; /* count down one character */
*sslstdio->optr++ = c; /* write character */
return c; /* return that character */
}
/* Put string
* Accepts: destination string pointer
* Returns: 0 or EOF if error
*/
int PSOUT (char *s)
{
if (!sslstdio) return fputs (s,stdout);
while (*s) { /* flush buffer if full */
if (!sslstdio->octr && PFLUSH ()) return EOF;
*sslstdio->optr++ = *s++; /* write one more character */
sslstdio->octr--; /* count down one character */
}
return 0; /* success */
}
/* Put record
* Accepts: source sized text
* Returns: 0 or EOF if error
*/
int PSOUTR (SIZEDTEXT *s)
{
unsigned char *t = s->data;
unsigned long i = s->size;
unsigned long j;
if (sslstdio) while (i) { /* until request satisfied */
/* flush buffer if full */
if (!sslstdio->octr && PFLUSH ()) break;
/* blat as big a chucnk as we can */
memcpy (sslstdio->optr,t,j = min (i,sslstdio->octr));
sslstdio->optr += j; /* account for chunk */
sslstdio->octr -= j;
t += j;
i -= j;
}
else while (i && ((j = fwrite (t,1,i,stdout)) || (errno == EINTR)))
t += j,i -= j;
return i ? EOF : NIL;
}
/* Flush output
* Returns: 0 or EOF if error
*/
int PFLUSH (void)
{
if (!sslstdio) return fflush (stdout);
/* force out buffer */
if (!ssl_sout (sslstdio->sslstream,sslstdio->obuf,
SSLBUFLEN - sslstdio->octr)) return EOF;
/* renew output buffer */
sslstdio->optr = sslstdio->obuf;
sslstdio->octr = SSLBUFLEN;
return 0; /* success */
}
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