25b8412333
It's easy to make mistakes this way, and bypassed the normal bounds checking. So make sure we always use macros or functions.
552 lines
10 KiB
C
552 lines
10 KiB
C
/* -*- c-basic-offset: 8 -*-
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rdesktop: A Remote Desktop Protocol client.
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Seamless Windows support
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Copyright 2005-2008 Peter Astrand <astrand@cendio.se> for Cendio AB
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Copyright 2007-2008 Pierre Ossman <ossman@cendio.se> for Cendio AB
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Copyright 2013-2017 Henrik Andersson <hean01@cendio.se> for Cendio AB
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "rdesktop.h"
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#include <stdarg.h>
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#include <assert.h>
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extern RD_BOOL g_seamless_rdp;
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static VCHANNEL *seamless_channel;
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static unsigned int seamless_serial;
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static char *seamless_rest = NULL;
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static char icon_buf[1024];
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static char *
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seamless_get_token(char **s)
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{
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char *comma, *head;
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head = *s;
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if (!head)
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return NULL;
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comma = strchr(head, ',');
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if (comma)
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{
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*comma = '\0';
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*s = comma + 1;
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}
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else
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{
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*s = NULL;
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}
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return head;
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}
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static RD_BOOL
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seamless_process_line(const char *line, void *data)
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{
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UNUSED(data);
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char *p, *l;
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char *tok1, *tok3, *tok4, *tok5, *tok6, *tok7, *tok8;
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unsigned long id, flags;
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char *endptr;
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l = xstrdup(line);
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p = l;
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logger(Core, Debug, "seamless_process_line(), got '%s'", p);
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tok1 = seamless_get_token(&p);
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(void) seamless_get_token(&p);
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tok3 = seamless_get_token(&p);
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tok4 = seamless_get_token(&p);
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tok5 = seamless_get_token(&p);
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tok6 = seamless_get_token(&p);
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tok7 = seamless_get_token(&p);
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tok8 = seamless_get_token(&p);
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if (!strcmp("CREATE", tok1))
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{
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unsigned long group, parent;
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if (!tok6)
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return False;
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id = strtoul(tok3, &endptr, 0);
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if (*endptr)
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return False;
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group = strtoul(tok4, &endptr, 0);
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if (*endptr)
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return False;
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parent = strtoul(tok5, &endptr, 0);
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if (*endptr)
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return False;
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flags = strtoul(tok6, &endptr, 0);
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if (*endptr)
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return False;
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ui_seamless_create_window(id, group, parent, flags);
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}
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else if (!strcmp("DESTROY", tok1))
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{
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if (!tok4)
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return False;
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id = strtoul(tok3, &endptr, 0);
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if (*endptr)
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return False;
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flags = strtoul(tok4, &endptr, 0);
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if (*endptr)
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return False;
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ui_seamless_destroy_window(id, flags);
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}
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else if (!strcmp("DESTROYGRP", tok1))
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{
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if (!tok4)
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return False;
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id = strtoul(tok3, &endptr, 0);
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if (*endptr)
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return False;
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flags = strtoul(tok4, &endptr, 0);
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if (*endptr)
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return False;
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ui_seamless_destroy_group(id, flags);
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}
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else if (!strcmp("SETICON", tok1))
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{
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int chunk, width, height, len;
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char byte[3];
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if (!tok8)
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return False;
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id = strtoul(tok3, &endptr, 0);
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if (*endptr)
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return False;
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chunk = strtoul(tok4, &endptr, 0);
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if (*endptr)
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return False;
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width = strtoul(tok6, &endptr, 0);
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if (*endptr)
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return False;
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height = strtoul(tok7, &endptr, 0);
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if (*endptr)
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return False;
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byte[2] = '\0';
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len = 0;
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while (*tok8 != '\0')
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{
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byte[0] = *tok8;
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tok8++;
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if (*tok8 == '\0')
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return False;
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byte[1] = *tok8;
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tok8++;
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icon_buf[len] = strtol(byte, NULL, 16);
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len++;
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if ((size_t)len >= sizeof(icon_buf))
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{
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logger(Protocol, Warning, "seamless_process_line(), icon data would overrun icon_buf");
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break;
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}
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}
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ui_seamless_seticon(id, tok5, width, height, chunk, icon_buf, len);
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}
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else if (!strcmp("DELICON", tok1))
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{
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int width, height;
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if (!tok6)
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return False;
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id = strtoul(tok3, &endptr, 0);
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if (*endptr)
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return False;
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width = strtoul(tok5, &endptr, 0);
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if (*endptr)
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return False;
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height = strtoul(tok6, &endptr, 0);
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if (*endptr)
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return False;
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ui_seamless_delicon(id, tok4, width, height);
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}
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else if (!strcmp("POSITION", tok1))
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{
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int x, y, width, height;
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if (!tok8)
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return False;
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id = strtoul(tok3, &endptr, 0);
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if (*endptr)
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return False;
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x = strtol(tok4, &endptr, 0);
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if (*endptr)
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return False;
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y = strtol(tok5, &endptr, 0);
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if (*endptr)
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return False;
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width = strtol(tok6, &endptr, 0);
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if (*endptr)
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return False;
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height = strtol(tok7, &endptr, 0);
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if (*endptr)
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return False;
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flags = strtoul(tok8, &endptr, 0);
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if (*endptr)
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return False;
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ui_seamless_move_window(id, x, y, width, height, flags);
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}
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else if (!strcmp("ZCHANGE", tok1))
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{
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unsigned long behind;
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id = strtoul(tok3, &endptr, 0);
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if (*endptr)
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return False;
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behind = strtoul(tok4, &endptr, 0);
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if (*endptr)
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return False;
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flags = strtoul(tok5, &endptr, 0);
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if (*endptr)
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return False;
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ui_seamless_restack_window(id, behind, flags);
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}
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else if (!strcmp("TITLE", tok1))
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{
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if (!tok5)
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return False;
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id = strtoul(tok3, &endptr, 0);
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if (*endptr)
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return False;
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flags = strtoul(tok5, &endptr, 0);
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if (*endptr)
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return False;
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ui_seamless_settitle(id, tok4, flags);
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}
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else if (!strcmp("STATE", tok1))
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{
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unsigned int state;
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if (!tok5)
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return False;
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id = strtoul(tok3, &endptr, 0);
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if (*endptr)
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return False;
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state = strtoul(tok4, &endptr, 0);
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if (*endptr)
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return False;
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flags = strtoul(tok5, &endptr, 0);
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if (*endptr)
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return False;
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ui_seamless_setstate(id, state, flags);
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}
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else if (!strcmp("DEBUG", tok1))
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{
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logger(Core, Debug, "seamless_process_line(), %s", line);
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}
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else if (!strcmp("SYNCBEGIN", tok1))
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{
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if (!tok3)
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return False;
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flags = strtoul(tok3, &endptr, 0);
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if (*endptr)
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return False;
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ui_seamless_syncbegin(flags);
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}
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else if (!strcmp("SYNCEND", tok1))
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{
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if (!tok3)
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return False;
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flags = strtoul(tok3, &endptr, 0);
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if (*endptr)
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return False;
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/* do nothing, currently */
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}
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else if (!strcmp("HELLO", tok1))
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{
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if (!tok3)
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return False;
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flags = strtoul(tok3, &endptr, 0);
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if (*endptr)
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return False;
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ui_seamless_begin(! !(flags & SEAMLESSRDP_HELLO_HIDDEN));
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}
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else if (!strcmp("ACK", tok1))
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{
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unsigned int serial;
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serial = strtoul(tok3, &endptr, 0);
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if (*endptr)
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return False;
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ui_seamless_ack(serial);
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}
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else if (!strcmp("HIDE", tok1))
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{
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if (!tok3)
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return False;
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flags = strtoul(tok3, &endptr, 0);
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if (*endptr)
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return False;
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ui_seamless_hide_desktop();
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}
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else if (!strcmp("UNHIDE", tok1))
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{
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if (!tok3)
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return False;
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flags = strtoul(tok3, &endptr, 0);
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if (*endptr)
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return False;
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ui_seamless_unhide_desktop();
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}
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xfree(l);
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return True;
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}
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static RD_BOOL
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seamless_line_handler(const char *line, void *data)
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{
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if (!seamless_process_line(line, data))
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{
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logger(Core, Warning, "seamless_line_handler(), invalid request '%s'", line);
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}
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return True;
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}
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static void
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seamless_process(STREAM s)
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{
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unsigned int pkglen;
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char *buf;
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pkglen = s_remaining(s);
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/* str_handle_lines requires null terminated strings */
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buf = xmalloc(pkglen + 1);
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in_uint8a(s, buf, pkglen);
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buf[pkglen] = '\0';
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str_handle_lines(buf, &seamless_rest, seamless_line_handler, NULL);
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xfree(buf);
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}
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RD_BOOL
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seamless_init(void)
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{
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if (!g_seamless_rdp)
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return False;
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seamless_serial = 0;
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seamless_channel =
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channel_register("seamrdp", CHANNEL_OPTION_INITIALIZED | CHANNEL_OPTION_ENCRYPT_RDP,
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seamless_process);
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return (seamless_channel != NULL);
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}
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void
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seamless_reset_state(void)
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{
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if (seamless_rest != NULL)
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{
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xfree(seamless_rest);
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seamless_rest = NULL;
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}
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}
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static unsigned int
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seamless_send(const char *command, const char *format, ...)
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{
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STREAM s;
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size_t len;
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va_list argp;
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char *escaped, buf[1025];
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len = snprintf(buf, sizeof(buf) - 1, "%s,%u,", command, seamless_serial);
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assert(len < (sizeof(buf) - 1));
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va_start(argp, format);
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len += vsnprintf(buf + len, sizeof(buf) - len - 1, format, argp);
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va_end(argp);
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assert(len < (sizeof(buf) - 1));
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escaped = utils_string_escape(buf);
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len = snprintf(buf, sizeof(buf), "%s", escaped);
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free(escaped);
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assert(len < (sizeof(buf) - 1));
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buf[len] = '\n';
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buf[len + 1] = '\0';
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len++;
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s = channel_init(seamless_channel, len);
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out_uint8a(s, buf, len) s_mark_end(s);
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logger(Core, Debug, "seamless_send(), sending '%s'", buf);
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channel_send(s, seamless_channel);
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s_free(s);
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return seamless_serial++;
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}
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unsigned int
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seamless_send_sync()
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{
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if (!g_seamless_rdp)
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return (unsigned int) -1;
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return seamless_send("SYNC", "");
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}
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unsigned int
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seamless_send_state(unsigned long id, unsigned int state, unsigned long flags)
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{
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if (!g_seamless_rdp)
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return (unsigned int) -1;
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return seamless_send("STATE", "0x%08lx,0x%x,0x%lx", id, state, flags);
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}
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unsigned int
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seamless_send_position(unsigned long id, int x, int y, int width, int height, unsigned long flags)
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{
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return seamless_send("POSITION", "0x%08lx,%d,%d,%d,%d,0x%lx", id, x, y, width, height,
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flags);
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}
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/* Update select timeout */
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void
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seamless_select_timeout(struct timeval *tv)
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{
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struct timeval ourtimeout = { 0, SEAMLESSRDP_POSITION_TIMER };
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if (g_seamless_rdp)
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{
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if (timercmp(&ourtimeout, tv, <))
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{
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tv->tv_sec = ourtimeout.tv_sec;
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tv->tv_usec = ourtimeout.tv_usec;
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}
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}
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}
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unsigned int
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seamless_send_zchange(unsigned long id, unsigned long below, unsigned long flags)
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{
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if (!g_seamless_rdp)
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return (unsigned int) -1;
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return seamless_send("ZCHANGE", "0x%08lx,0x%08lx,0x%lx", id, below, flags);
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}
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unsigned int
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seamless_send_focus(unsigned long id, unsigned long flags)
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{
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if (!g_seamless_rdp)
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return (unsigned int) -1;
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return seamless_send("FOCUS", "0x%08lx,0x%lx", id, flags);
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}
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/* Send client-to-server message to destroy process on the server. */
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unsigned int
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seamless_send_destroy(unsigned long id)
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{
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return seamless_send("DESTROY", "0x%08lx", id);
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}
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unsigned int
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seamless_send_spawn(char *cmdline)
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{
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unsigned int res;
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if (!g_seamless_rdp)
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return (unsigned int) -1;
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res = seamless_send("SPAWN", cmdline);
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return res;
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}
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unsigned int
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seamless_send_persistent(RD_BOOL enable)
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{
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unsigned int res;
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if (!g_seamless_rdp)
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return (unsigned int) -1;
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logger(Core, Debug, "seamless_send_persistent(), %s persistent seamless mode",
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enable ? "enable" : "disable");
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res = seamless_send("PERSISTENT", "%d", enable);
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return res;
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}
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