diff options
Diffstat (limited to 'src/nvim/tempfile.c')
-rw-r--r-- | src/nvim/tempfile.c | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/src/nvim/tempfile.c b/src/nvim/tempfile.c deleted file mode 100644 index afe926b2ef..0000000000 --- a/src/nvim/tempfile.c +++ /dev/null @@ -1,139 +0,0 @@ -#include <inttypes.h> -#include <stdbool.h> -#include <stdlib.h> -#include <stdio.h> - -#include "nvim/ascii.h" -#include "nvim/memory.h" -#include "nvim/misc1.h" -#include "nvim/os/os.h" -#include "nvim/os/os_defs.h" -#include "nvim/path.h" -#include "nvim/strings.h" -#include "nvim/tempfile.h" - -#ifdef INCLUDE_GENERATED_DECLARATIONS -# include "tempfile.c.generated.h" -#endif - -/// Name of Vim's own temp dir. Ends in a slash. -static char_u *vim_tempdir = NULL; - -/// Create a directory for private use by this instance of Neovim. -/// This is done once, and the same directory is used for all temp files. -/// This method avoids security problems because of symlink attacks et al. -/// It's also a bit faster, because we only need to check for an existing -/// file when creating the directory and not for each temp file. -static void vim_maketempdir(void) -{ - static const char *temp_dirs[] = TEMP_DIR_NAMES; - // Try the entries in `TEMP_DIR_NAMES` to create the temp directory. - char_u template[TEMP_FILE_PATH_MAXLEN]; - char_u path[TEMP_FILE_PATH_MAXLEN]; - for (size_t i = 0; i < ARRAY_SIZE(temp_dirs); ++i) { - // Expand environment variables, leave room for "/nvimXXXXXX/999999999" - // Skip the directory check if the expansion fails. - expand_env((char_u *)temp_dirs[i], template, TEMP_FILE_PATH_MAXLEN - 22); - if (template[0] == '$' || !os_isdir(template)) { - continue; - } - - add_pathsep((char *)template); - // Concatenate with temporary directory name pattern - STRCAT(template, "nvimXXXXXX"); - - if (os_mkdtemp((const char *)template, (char *)path) != 0) { - continue; - } - - if (vim_settempdir((char *)path)) { - // Successfully created and set temporary directory so stop trying. - break; - } else { - // Couldn't set `vim_tempdir` to `path` so remove created directory. - os_rmdir((char *)path); - } - } -} - -/// Delete the temp directory and all files it contains. -void vim_deltempdir(void) -{ - if (vim_tempdir != NULL) { - snprintf((char *)NameBuff, MAXPATHL, "%s*", vim_tempdir); - - char_u **files; - int file_count; - - // Note: We cannot just do `&NameBuff` because it is a statically - // sized array so `NameBuff == &NameBuff` according to C semantics. - char_u *buff_list[1] = {NameBuff}; - if (gen_expand_wildcards(1, buff_list, &file_count, &files, - EW_DIR|EW_FILE|EW_SILENT) == OK) { - for (int i = 0; i < file_count; ++i) { - os_remove((char *)files[i]); - } - FreeWild(file_count, files); - } - path_tail(NameBuff)[-1] = NUL; - os_rmdir((char *)NameBuff); - - xfree(vim_tempdir); - vim_tempdir = NULL; - } -} - -/// Get the name of temp directory. This directory would be created on the first -/// call to this function. -char_u *vim_gettempdir(void) -{ - if (vim_tempdir == NULL) { - vim_maketempdir(); - } - - return vim_tempdir; -} - -/// Set Neovim own temporary directory name to `tempdir`. This directory should -/// be already created. Expand this name to a full path and put it in -/// `vim_tempdir`. This avoids that using `:cd` would confuse us. -/// -/// @param tempdir must be no longer than MAXPATHL. -/// -/// @return false if we run out of memory. -static bool vim_settempdir(char *tempdir) -{ - char *buf = verbose_try_malloc(MAXPATHL + 2); - if (!buf) { - return false; - } - vim_FullName(tempdir, buf, MAXPATHL, false); - add_pathsep(buf); - vim_tempdir = (char_u *)xstrdup(buf); - xfree(buf); - return true; -} - -/// Return a unique name that can be used for a temp file. -/// -/// @note The temp file is NOT created. -/// -/// @return pointer to the temp file name or NULL if Neovim can't create -/// temporary directory for its own temporary files. -char_u *vim_tempname(void) -{ - // Temp filename counter. - static uint32_t temp_count; - - char_u *tempdir = vim_gettempdir(); - if (!tempdir) { - return NULL; - } - - // There is no need to check if the file exists, because we own the directory - // and nobody else creates a file in it. - char_u template[TEMP_FILE_PATH_MAXLEN]; - snprintf((char *)template, TEMP_FILE_PATH_MAXLEN, - "%s%" PRIu32, tempdir, temp_count++); - return vim_strsave(template); -} |