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ziv-gabel 06ee9615ad Initial commit: AOSP 14 with modifications for Unplugged OS
2025-10-06 13:59:42 +00:00
..
include Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
plugins Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
Android.bp Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
auth.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
cbcp.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
cbcp.h Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
ccp.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
ccp.h Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
chap_ms.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
chap_ms.h Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
chap-md5.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
chap-md5.h Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
chap-new.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
chap-new.h Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
demand.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
eap.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
eap.h Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
ecp.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
ecp.h Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
eui64.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
eui64.h Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
fsm.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
fsm.h Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
ipcp.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
ipcp.h Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
ipv6cp.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
ipv6cp.h Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
ipxcp.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
ipxcp.h Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
lcp.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
lcp.h Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
magic.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
magic.h Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
main.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
Makefile.linux Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
Makefile.sol2 Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
md4.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
md4.h Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
md5.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
md5.h Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
MODULE_LICENSE_BSD Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
mppe.h Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
NOTICE Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
openssl-hash.h Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
options.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
patchlevel.h Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
pathnames.h Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
ppp.pam Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
pppcrypt.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
pppcrypt.h Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
pppd.8 Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
pppd.h Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
pppox.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
README.google Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
README.pppol2tp Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
README.pppopptp Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
session.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
session.h Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
sha1.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
sha1.h Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
srp-entry.8 Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
srp-entry.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
sys-linux.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
sys-solaris.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
tty.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
upap.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
upap.h Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
utils.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00

README.pppopptp 

PPPoPPTP-Android plugin
=======================

This plugin was written for AOSP project from scratch. It has nothing to do with
accel-pptp plugin [1].

This plugin adds support for upstream kernel PPTP implementation in pppd daemon.
Only PNS (client) part of PPTP is implemented, as we don't use Android devices
in PAC mode.

In general case, the execution flow for VPN startup on Android devices is:
 1. Run PPTP client (mtpd)
 2. mtpd obtains remote Call ID on OCRP (Outgoing-Call-Reply) packet
 3. mtpd creates PPTP socket
 4. mtpd runs pppd, passing PPTP socket as to pppopptp-android (as parameter)
 5. pppd dlopen() pppopptp-android plugin (because it received corresponding
    arguments from mtpd)

Main task of this plugin is to obtain PPTP socket FD from mtpd and pass it
back to pppd when .connect() callback is executed.

All control packets are handled in mtpd. PPP packets (like LCP) are handled in
pppd. Data packets are handled by kernel PPTP driver.

[1] http://accel-pptp.sourceforge.net/