pidgin/pidgin

Rewrite Bonjour SOCKS5 communication using Gio.

2020-11-14, Elliott Sales de Andrade
12ddbb897723
Rewrite Bonjour SOCKS5 communication using Gio.

* Remove XepXfer->rx_len, which is always 0.
* Rewrite Bonjour SOCKS5 communication using Gio.
The `bonjour_sock5_request_cb` function is confusing, incrementing `xf->sock5_req_state`, and then calling itself again to get to the next part of the switch. Using individual callback functions is required by Gio, but also hopefully clearer.

Testing Done:
Compile only.

Reviewed at https://reviews.imfreedom.org/r/215/
/* This file is part of the Project Athena Zephyr Notification System.
* It contains source for the ZFormatAuthenticNotice function.
*
* Created by: Robert French
* Copyright (c) 1987,1988 by the Massachusetts Institute of Technology.
* For copying and distribution information, see the file
* "mit-copyright.h".
*/
#include "internal.h"
#ifdef ZEPHYR_USES_KERBEROS
Code_t
ZFormatAuthenticNotice(ZNotice_t *notice, register char *buffer,
register int buffer_len, int *len, C_Block session)
{
ZNotice_t newnotice;
char *ptr;
int retval, hdrlen;
newnotice = *notice;
newnotice.z_auth = 1;
newnotice.z_authent_len = 0;
newnotice.z_ascii_authent = "";
if ((retval = Z_FormatRawHeader(&newnotice, buffer, buffer_len,
&hdrlen, &ptr, NULL)) != ZERR_NONE)
return (retval);
#ifdef NOENCRYPTION
newnotice.z_checksum = 0;
#else
newnotice.z_checksum =
(ZChecksum_t)des_quad_cksum(buffer, NULL, ptr - buffer, 0, (C_Block*)session);
#endif
if ((retval = Z_FormatRawHeader(&newnotice, buffer, buffer_len,
&hdrlen, NULL, NULL)) != ZERR_NONE)
return (retval);
ptr = buffer+hdrlen;
if (newnotice.z_message_len+hdrlen > buffer_len)
return (ZERR_PKTLEN);
(void) memcpy(ptr, newnotice.z_message, newnotice.z_message_len);
*len = hdrlen+newnotice.z_message_len;
if (*len > Z_MAXPKTLEN)
return (ZERR_PKTLEN);
return (ZERR_NONE);
}
#endif