Mercurial > vim
view src/os_qnx.c @ 33096:828bcb1a37e7 v9.0.1833
patch 9.0.1833: [security] runtime file fixes
Commit: https://github.com/vim/vim/commit/816fbcc262687b81fc46f82f7bbeb1453addfe0c
Author: Christian Brabandt <cb@256bit.org>
Date: Thu Aug 31 23:52:30 2023 +0200
patch 9.0.1833: [security] runtime file fixes
Problem: runtime files may execute code in current dir
Solution: only execute, if not run from current directory
The perl, zig and ruby filetype plugins and the zip and gzip autoload
plugins may try to load malicious executable files from the current
working directory. This is especially a problem on windows, where the
current directory is implicitly in your $PATH and windows may even run a
file with the extension `.bat` because of $PATHEXT.
So make sure that we are not trying to execute a file from the current
directory. If this would be the case, error out (for the zip and gzip)
plugins or silently do not run those commands (for the ftplugins).
This assumes, that only the current working directory is bad. For all
other directories, it is assumed that those directories were
intentionally set to the $PATH by the user.
Signed-off-by: Christian Brabandt <cb@256bit.org>
author | Christian Brabandt <cb@256bit.org> |
---|---|
date | Fri, 01 Sep 2023 00:00:02 +0200 |
parents | 97255d909654 |
children |
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/* vi:set ts=8 sts=4 sw=4 noet: * * VIM - Vi IMproved by Bram Moolenaar * * QNX port by Julian Kinraid * * Do ":help uganda" in Vim to read copying and usage conditions. * Do ":help credits" in Vim to see a list of people who contributed. */ /* * os_qnx.c */ #include "vim.h" #if defined(FEAT_GUI_PHOTON) int is_photon_available; #endif void qnx_init(void) { #if defined(FEAT_GUI_PHOTON) PhChannelParms_t parms; CLEAR_FIELD(parms); parms.flags = Ph_DYNAMIC_BUFFER; is_photon_available = (PhAttach(NULL, &parms) != NULL) ? TRUE : FALSE; #endif } #if (defined(FEAT_GUI_PHOTON) && defined(FEAT_CLIPBOARD)) || defined(PROTO) #define CLIP_TYPE_VIM "VIMTYPE" #define CLIP_TYPE_TEXT "TEXT" // Turn on the clipboard for a console vim when photon is running void qnx_clip_init(void) { if (is_photon_available == TRUE && !gui.in_use) clip_init(TRUE); } ///////////////////////////////////////////////////////////////////////////// // Clipboard // No support for owning the clipboard int clip_mch_own_selection(Clipboard_T *cbd) { return FALSE; } void clip_mch_lose_selection(Clipboard_T *cbd) { } void clip_mch_request_selection(Clipboard_T *cbd) { int type = MLINE, clip_length = 0, is_type_set = FALSE; void *cbdata; PhClipHeader *clip_header; char_u *clip_text = NULL; cbdata = PhClipboardPasteStart(PhInputGroup(NULL)); if (cbdata == NULL) return; // Look for the vim specific clip first clip_header = PhClipboardPasteType(cbdata, CLIP_TYPE_VIM); if (clip_header != NULL && clip_header->data != NULL) { switch(*(char *) clip_header->data) { default: // fallthrough to line type case 'L': type = MLINE; break; case 'C': type = MCHAR; break; case 'B': type = MBLOCK; break; } is_type_set = TRUE; } // Try for just normal text clip_header = PhClipboardPasteType(cbdata, CLIP_TYPE_TEXT); if (clip_header != NULL) { clip_text = clip_header->data; clip_length = clip_header->length - 1; if (clip_text != NULL && is_type_set == FALSE) type = MAUTO; } if ((clip_text != NULL) && (clip_length > 0)) clip_yank_selection(type, clip_text, clip_length, cbd); PhClipboardPasteFinish(cbdata); } void clip_mch_set_selection(Clipboard_T *cbd) { int type; long_u len; char_u *text_clip, vim_clip[2], *str = NULL; PhClipHeader clip_header[2]; // Prevent recursion from clip_get_selection() if (cbd->owned == TRUE) return; cbd->owned = TRUE; clip_get_selection(cbd); cbd->owned = FALSE; type = clip_convert_selection(&str, &len, cbd); if (type >= 0) { text_clip = alloc(len + 1); // Normal text if (text_clip && vim_clip) { CLEAR_FIELD(clip_header); STRNCPY(clip_header[0].type, CLIP_TYPE_VIM, 8); clip_header[0].length = sizeof(vim_clip); clip_header[0].data = vim_clip; STRNCPY(clip_header[1].type, CLIP_TYPE_TEXT, 8); clip_header[1].length = len + 1; clip_header[1].data = text_clip; switch(type) { default: // fallthrough to MLINE case MLINE: *vim_clip = 'L'; break; case MCHAR: *vim_clip = 'C'; break; case MBLOCK: *vim_clip = 'B'; break; } vim_strncpy(text_clip, str, len); vim_clip[ 1 ] = NUL; PhClipboardCopy(PhInputGroup(NULL), 2, clip_header); } vim_free(text_clip); } vim_free(str); } #endif