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<a href='https://github.com/akkartik/mu/blob/main/011run.cc'>https://github.com/akkartik/mu/blob/main/011run.cc</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="Comment">//: Running SubX programs on the VM.</span>
<span id="L2" class="LineNr"> 2 </span>
<span id="L3" class="LineNr"> 3 </span><span class="Comment">//: (Not to be confused with the 'run' subcommand for running ELF binaries on</span>
<span id="L4" class="LineNr"> 4 </span><span class="Comment">//: the VM. That comes later.)</span>
<span id="L5" class="LineNr"> 5 </span>
<span id="L6" class="LineNr"> 6 </span><span class="Delimiter">:(before "End <a href='001help.cc.html#L53'>Help</a> Texts")</span>
<span id="L7" class="LineNr"> 7 </span><a href='001help.cc.html#L235'>put_new</a><span class="Delimiter">(</span><span class="SpecialChar"><a href='001help.cc.html#L53'>Help</a></span><span class="Delimiter">,</span> <span class="Constant">"syntax"</span><span class="Delimiter">,</span>
<span id="L8" class="LineNr"> 8 </span> <span class="Constant">"SubX programs consist of <a href='011run.cc.html#L106'>segments</a>, each segment in turn consisting of lines.\n"</span>
<span id="L9" class="LineNr"> 9 </span> <span class="Constant">"Line-endings are significant; each <a href='011run.cc.html#L121'>line</a> should contain a single\n"</span>
<span id="L10" class="LineNr"> 10 </span> <span class="Constant">"instruction, macro or directive.\n"</span>
<span id="L11" class="LineNr"> 11 </span> <span class="Constant">"\n"</span>
<span id="L12" class="LineNr"> 12 </span> <span class="Constant">"Comments start with the '#' character. It should be at the start of a word\n"</span>
<span id="L13" class="LineNr"> 13 </span> <span class="Constant">"(start of <a href='011run.cc.html#L121'>line</a>, or following a space).\n"</span>
<span id="L14" class="LineNr"> 14 </span> <span class="Constant">"\n"</span>
<span id="L15" class="LineNr"> 15 </span> <span class="Constant">"Each segment starts with a header <a href='011run.cc.html#L121'>line</a>: a '==' delimiter followed by the <a href='011run.cc.html#L111'>name</a> of\n"</span>
<span id="L16" class="LineNr"> 16 </span> <span class="Constant">"the segment and a (sometimes approximate) starting address in memory.\n"</span>
<span id="L17" class="LineNr"> 17 </span> <span class="Constant">"The <a href='011run.cc.html#L111'>name</a> 'code' is special; instructions to execute should always go here.\n"</span>
<span id="L18" class="LineNr"> 18 </span> <span class="Constant">"\n"</span>
<span id="L19" class="LineNr"> 19 </span> <span class="Constant">"The resulting binary starts running code from a label called 'Entry'\n"</span>
<span id="L20" class="LineNr"> 20 </span> <span class="Constant">"in the code segment.\n"</span>
<span id="L21" class="LineNr"> 21 </span> <span class="Constant">"\n"</span>
<span id="L22" class="LineNr"> 22 </span> <span class="Constant">"Segments with the same <a href='011run.cc.html#L111'>name</a> get merged together. This rule helps keep functions\n"</span>
<span id="L23" class="LineNr"> 23 </span> <span class="Constant">"and their data close together in .subx files.\n"</span>
<span id="L24" class="LineNr"> 24 </span> <span class="Constant">"You don't have to specify the starting address after the first time.\n"</span>
<span id="L25" class="LineNr"> 25 </span> <span class="Constant">"\n"</span>
<span id="L26" class="LineNr"> 26 </span> <span class="Constant">"Lines consist of a series of words. Words can contain arbitrary metadata\n"</span>
<span id="L27" class="LineNr"> 27 </span> <span class="Constant">"after a '/', but they can never contain whitespace. Metadata has no effect\n"</span>
<span id="L28" class="LineNr"> 28 </span> <span class="Constant">"at runtime, but can be handy when rewriting macros.\n"</span>
<span id="L29" class="LineNr"> 29 </span> <span class="Constant">"\n"</span>
<span id="L30" class="LineNr"> 30 </span> <span class="Constant">"Check out the example programs in the apps/ directory, particularly apps/ex*.\n"</span>
<span id="L31" class="LineNr"> 31 </span><span class="Delimiter">);</span>
<span id="L32" class="LineNr"> 32 </span><span class="Delimiter">:(before "End <a href='001help.cc.html#L53'>Help</a> Contents")</span>
<span id="L33" class="LineNr"> 33 </span>cerr << <span class="Constant">" syntax\n"</span><span class="Delimiter">;</span>
<span id="L34" class="LineNr"> 34 </span>
<span id="L35" class="LineNr"> 35 </span><span class="Delimiter">:(code)</span>
<span id="L36" class="LineNr"> 36 </span><span class="Normal">void</span> <a href='011run.cc.html#L36'>test_copy_imm32_to_EAX</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L37" class="LineNr"> 37 </span> <span class="Comment">// At the lowest level, SubX programs are a series of hex bytes, each</span>
<span id="L38" class="LineNr"> 38 </span> <span class="Comment">// (variable-length) instruction on one line.</span>
<span id="L39" class="LineNr"> 39 </span> <a href='011run.cc.html#L82'>run</a><span class="Delimiter">(</span>
<span id="L40" class="LineNr"> 40 </span> <span class="Comment">// Comments start with '#' and are ignored.</span>
<span id="L41" class="LineNr"> 41 </span> <span class="Constant">"# comment\n"</span>
<span id="L42" class="LineNr"> 42 </span> <span class="Comment">// Segment headers start with '==', a name and a starting hex address.</span>
<span id="L43" class="LineNr"> 43 </span> <span class="Comment">// There's usually one code and one data segment. The code segment</span>
<span id="L44" class="LineNr"> 44 </span> <span class="Comment">// always comes first.</span>
<span id="L45" class="LineNr"> 45 </span> <span class="Constant">"== code 0x1\n"</span> <span class="Comment">// code segment</span>
<span id="L46" class="LineNr"> 46 </span>
<span id="L47" class="LineNr"> 47 </span> <span class="Comment">// After the header, each segment consists of lines, and each line</span>
<span id="L48" class="LineNr"> 48 </span> <span class="Comment">// consists of words separated by whitespace.</span>
<span id="L49" class="LineNr"> 49 </span> <span class="Comment">//</span>
<span id="L50" class="LineNr"> 50 </span> <span class="Comment">// All words can have metadata after a '/'. No spaces allowed in</span>
<span id="L51" class="LineNr"> 51 </span> <span class="Comment">// metadata, of course.</span>
<span id="L52" class="LineNr"> 52 </span> <span class="Comment">// Unrecognized metadata never causes errors, so you can use it for</span>
<span id="L53" class="LineNr"> 53 </span> <span class="Comment">// documentation.</span>
<span id="L54" class="LineNr"> 54 </span> <span class="Comment">//</span>
<span id="L55" class="LineNr"> 55 </span> <span class="Comment">// Within the code segment in particular, x86 instructions consist of</span>
<span id="L56" class="LineNr"> 56 </span> <span class="Comment">// some number of the following parts and sub-parts (see the Readme and</span>
<span id="L57" class="LineNr"> 57 </span> <span class="Comment">// cheatsheet.pdf for details):</span>
<span id="L58" class="LineNr"> 58 </span> <span class="Comment">// opcodes: 1-3 bytes</span>
<span id="L59" class="LineNr"> 59 </span> <span class="Comment">// ModR/M byte</span>
<span id="L60" class="LineNr"> 60 </span> <span class="Comment">// SIB byte</span>
<span id="L61" class="LineNr"> 61 </span> <span class="Comment">// displacement: 0/1/2/4 bytes</span>
<span id="L62" class="LineNr"> 62 </span> <span class="Comment">// immediate: 0/1/2/4 bytes</span>
<span id="L63" class="LineNr"> 63 </span> <span class="Comment">// opcode ModR/M SIB displacement immediate</span>
<span id="L64" class="LineNr"> 64 </span> <span class="Comment">// instruction mod, reg, Reg/Mem bits scale, index, base</span>
<span id="L65" class="LineNr"> 65 </span> <span class="Comment">// 1-3 bytes 0/1 byte 0/1 byte 0/1/2/4 bytes 0/1/2/4 bytes</span>
<span id="L66" class="LineNr"> 66 </span> <span class="Constant">" b8 . . . 0a 0b 0c 0d\n"</span> <span class="Comment">// copy 0x0d0c0b0a to EAX</span>
<span id="L67" class="LineNr"> 67 </span> <span class="Comment">// The periods are just to help the eye track long gaps between columns,</span>
<span id="L68" class="LineNr"> 68 </span> <span class="Comment">// and are otherwise ignored.</span>
<span id="L69" class="LineNr"> 69 </span> <span class="Delimiter">);pre { line-height: 125%; }
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* otrlibv4.c
*
* Copyright (C) 2012 - 2016 James Booth <boothj5@gmail.com>
*
* This file is part of Profanity.
*
* Profanity is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Profanity is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Profanity. If not, see <http://www.gnu.org/licenses/>.
*
* In addition, as a special exception, the copyright holders give permission to
* link the code of portions of this program with the OpenSSL library under
* certain conditions as described in each individual source file, and
* distribute linked combinations including the two.
*
* You must obey the GNU General Public License in all respects for all of the
* code used other than OpenSSL. If you modify file(s) with this exception, you
* may extend this exception to your version of the file(s), but you are not
* obligated to do so. If you do not wish to do so, delete this exception
* statement from your version. If you delete this exception statement from all
* source files in the program, then also delete it here.
*
*/
#include <libotr/proto.h>
#include <libotr/privkey.h>
#include <libotr/message.h>
#include "ui/ui.h"
#include "window_list.h"
#include "log.h"
#include "otr/otr.h"
#include "otr/otrlib.h"
static GTimer *timer;
static unsigned int current_interval;
OtrlPolicy
otrlib_policy(void)
{
return OTRL_POLICY_ALLOW_V1 | OTRL_POLICY_ALLOW_V2;
}
void
otrlib_init_timer(void)
{
OtrlUserState user_state = otr_userstate();
timer = g_timer_new();
current_interval = otrl_message_poll_get_default_interval(user_state);
}
void
otrlib_poll(void)
{
gdouble elapsed = g_timer_elapsed(timer, NULL);
if (current_interval != 0 && elapsed > current_interval) {
OtrlUserState user_state = otr_userstate();
OtrlMessageAppOps *ops = otr_messageops();
otrl_message_poll(user_state, ops, NULL);
g_timer_start(timer);
}
}
char*
otrlib_start_query(void)
{
return "?OTR?v2? This user has requested an Off-the-Record private conversation. However, you do not have a plugin to support that. See http://otr.cypherpunks.ca/ for more information.";
}
static const char*
cb_otr_error_message(void *opdata, ConnContext *context, OtrlErrorCode err_code)
{
switch(err_code)
{
case OTRL_ERRCODE_ENCRYPTION_ERROR:
return strdup("OTR Error: occurred while encrypting a message");
case OTRL_ERRCODE_MSG_NOT_IN_PRIVATE:
return strdup("OTR Error: Sent encrypted message to somebody who is not in a mutual OTR session");
case OTRL_ERRCODE_MSG_UNREADABLE:
return strdup("OTR Error: sent an unreadable encrypted message");
case OTRL_ERRCODE_MSG_MALFORMED:
return strdup("OTR Error: message sent is malformed");
default:
return strdup("OTR Error: unknown");
}
}
static void
cb_otr_error_message_free(void *opdata, const char *err_msg)
{
free((char *)err_msg);
}
static void
cb_timer_control(void *opdata, unsigned int interval)
{
current_interval = interval;
}
static void
cb_handle_msg_event(void *opdata, OtrlMessageEvent msg_event,
ConnContext *context, const char *message,
gcry_error_t err)
{
GString *err_msg;
switch (msg_event)
{
case OTRL_MSGEVENT_ENCRYPTION_REQUIRED:
ui_handle_otr_error(context->username, "OTR: Policy requires encryption, but attempting to send an unencrypted message.");
break;
case OTRL_MSGEVENT_ENCRYPTION_ERROR:
ui_handle_otr_error(context->username, "OTR: Error occured while encrypting a message, message not sent.");
break;
case OTRL_MSGEVENT_CONNECTION_ENDED:
ui_handle_otr_error(context->username, "OTR: Message not sent because contact has ended the private conversation.");
break;
case OTRL_MSGEVENT_SETUP_ERROR:
ui_handle_otr_error(context->username, "OTR: A private conversation could not be set up.");
break;
case OTRL_MSGEVENT_MSG_REFLECTED:
ui_handle_otr_error(context->username, "OTR: Received our own OTR message.");
break;
case OTRL_MSGEVENT_MSG_RESENT:
ui_handle_otr_error(context->username, "OTR: The previous message was resent.");
break;
case OTRL_MSGEVENT_RCVDMSG_NOT_IN_PRIVATE:
ui_handle_otr_error(context->username, "OTR: Received an encrypted message but no private connection established.");
break;
case OTRL_MSGEVENT_RCVDMSG_UNREADABLE:
ui_handle_otr_error(context->username, "OTR: Cannot read the received message.");
break;
case OTRL_MSGEVENT_RCVDMSG_MALFORMED:
ui_handle_otr_error(context->username, "OTR: The message received contains malformed data.");
break;
case OTRL_MSGEVENT_RCVDMSG_GENERAL_ERR:
err_msg = g_string_new("OTR: Received error: ");
g_string_append(err_msg, message);
g_string_append(err_msg, ".");
ui_handle_otr_error(context->username, err_msg->str);
g_string_free(err_msg, TRUE);
break;
case OTRL_MSGEVENT_RCVDMSG_UNENCRYPTED:
err_msg = g_string_new("OTR: Received an unencrypted message: ");
g_string_append(err_msg, message);
ui_handle_otr_error(context->username, err_msg->str);
g_string_free(err_msg, TRUE);
break;
case OTRL_MSGEVENT_RCVDMSG_UNRECOGNIZED:
ui_handle_otr_error(context->username, "OTR: Cannot recognize the type of message received.");
break;
case OTRL_MSGEVENT_RCVDMSG_FOR_OTHER_INSTANCE:
ui_handle_otr_error(context->username, "OTR: Received and discarded a message intended for another instance.");
break;
default:
break;
}
}
static void
cb_handle_smp_event(void *opdata, OtrlSMPEvent smp_event,
ConnContext *context, unsigned short progress_percent,
char *question)
{
NextExpectedSMP nextMsg = context->smstate->nextExpected;
OtrlUserState user_state = otr_userstate();
OtrlMessageAppOps *ops = otr_messageops();
GHashTable *smp_initiators = otr_smpinitators();
ProfChatWin *chatwin = wins_get_chat(context->username);
switch(smp_event)
{
case OTRL_SMPEVENT_ASK_FOR_SECRET:
if (chatwin) {
chatwin_otr_smp_event(chatwin, PROF_OTR_SMP_INIT, NULL);
}
g_hash_table_insert(smp_initiators, strdup(context->username), strdup(context->username));
break;
case OTRL_SMPEVENT_ASK_FOR_ANSWER:
if (chatwin) {
chatwin_otr_smp_event(chatwin, PROF_OTR_SMP_INIT_Q, question);
}
break;
case OTRL_SMPEVENT_SUCCESS:
if (chatwin) {
if (context->smstate->received_question == 0) {
chatwin_otr_smp_event(chatwin, PROF_OTR_SMP_SUCCESS, NULL);
chatwin_otr_trust(chatwin);
} else {
chatwin_otr_smp_event(chatwin, PROF_OTR_SMP_SUCCESS_Q, NULL);
}
}
break;
case OTRL_SMPEVENT_FAILURE:
if (chatwin) {
if (context->smstate->received_question == 0) {
if (nextMsg == OTRL_SMP_EXPECT3) {
chatwin_otr_smp_event(chatwin, PROF_OTR_SMP_SENDER_FAIL, NULL);
} else if (nextMsg == OTRL_SMP_EXPECT4) {
chatwin_otr_smp_event(chatwin, PROF_OTR_SMP_RECEIVER_FAIL, NULL);
}
chatwin_otr_untrust(chatwin);
} else {
chatwin_otr_smp_event(chatwin, PROF_OTR_SMP_FAIL_Q, NULL);
}
}
break;
case OTRL_SMPEVENT_ERROR:
otrl_message_abort_smp(user_state, ops, NULL, context);
break;
case OTRL_SMPEVENT_CHEATED:
otrl_message_abort_smp(user_state, ops, NULL, context);
break;
case OTRL_SMPEVENT_ABORT:
if (chatwin) {
chatwin_otr_smp_event(chatwin, PROF_OTR_SMP_ABORT, NULL);
chatwin_otr_untrust(chatwin);
}
break;
case OTRL_SMPEVENT_IN_PROGRESS:
break;
default:
break;
}
}
void
otrlib_init_ops(OtrlMessageAppOps *ops)
{
ops->otr_error_message = cb_otr_error_message;
ops->otr_error_message_free = cb_otr_error_message_free;
ops->handle_msg_event = cb_handle_msg_event;
ops->handle_smp_event = cb_handle_smp_event;
ops->timer_control = cb_timer_control;
}
ConnContext*
otrlib_context_find(OtrlUserState user_state, const char *const recipient, char *jid)
{
return otrl_context_find(user_state, recipient, jid, "xmpp", OTRL_INSTAG_MASTER, 0, NULL, NULL, NULL);
}
void
otrlib_end_session(OtrlUserState user_state, const char *const recipient, char *jid, OtrlMessageAppOps *ops)
{
ConnContext *context = otrl_context_find(user_state, recipient, jid, "xmpp",
OTRL_INSTAG_MASTER, 0, NULL, NULL, NULL);
if (context) {
otrl_message_disconnect(user_state, ops, NULL, jid, "xmpp", recipient, 0);
}
}
gcry_error_t
otrlib_encrypt_message(OtrlUserState user_state, OtrlMessageAppOps *ops, char *jid, const char *const to,
const char *const message, char **newmessage)
{
gcry_error_t err;
err = otrl_message_sending(
user_state,
ops,
NULL,
jid,
"xmpp",
to,
OTRL_INSTAG_MASTER,
message,
0,
newmessage,
OTRL_FRAGMENT_SEND_SKIP,
NULL,
NULL,
NULL);
return err;
}
int
otrlib_decrypt_message(OtrlUserState user_state, OtrlMessageAppOps *ops, char *jid, const char *const from,
const char *const message, char **decrypted, OtrlTLV **tlvs)
{
return otrl_message_receiving(
user_state,
ops,
NULL,
jid,
"xmpp",
from,
message,
decrypted,
tlvs,
NULL,
NULL,
NULL);
}
void
otrlib_handle_tlvs(OtrlUserState user_state, OtrlMessageAppOps *ops, ConnContext *context, OtrlTLV *tlvs, GHashTable *smp_initiators)
{
}