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files: when the requested operating directory cannot be set, fail 

Specifying an operating directory should either lead to a successfull
confinement, or nano should fail to start.

(Also: save the terminal settings as soon as possible, so that an early
die() will not restore uninitialized values.)

This fixes the first part of https://savannah.gnu.org/bugs/?47798 properly.
master
Benno Schulenberg 2016-06-12 11:13:45 +02:00
parent 5aa1df37d1
commit aa09abe198
2 changed files with 12 additions and 18 deletions
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12
src/files.c
View File

@ -1563,15 +1563,9 @@ void init_operating_dir(void)
full_operating_dir = get_full_path(operating_dir);
/* If get_full_path() failed or the operating directory is
* inaccessible, unset operating_dir. */
if (full_operating_dir == NULL || chdir(full_operating_dir) == -1) {
statusline(ALERT, _("Not a valid directory: %s"), operating_dir);
free(full_operating_dir);
full_operating_dir = NULL;
free(operating_dir);
operating_dir = NULL;
}
/* If the operating directory is inaccessible, fail. */
if (full_operating_dir == NULL || chdir(full_operating_dir) == -1)
die("Invalid operating directory\n");
}
/* Check to see if we're inside the operating directory. Return FALSE

18
src/nano.c
View File

@ -2037,6 +2037,9 @@ int main(int argc, char **argv)
};
#endif
/* Back up the terminal settings so that they can be restored. */
tcgetattr(0, &oldterm);
#ifdef ENABLE_UTF8
{
/* If the locale set exists and uses UTF-8, we should use
@ -2423,6 +2426,12 @@ int main(int argc, char **argv)
init_backup_dir();
#endif
#ifndef DISABLE_OPERATINGDIR
/* Set up the operating directory. This entails chdir()ing there,
* so that file reads and writes will be based there. */
init_operating_dir();
#endif
#ifndef DISABLE_JUSTIFY
/* If punct wasn't specified, set its default value. */
if (punct == NULL)
@ -2504,9 +2513,6 @@ int main(int argc, char **argv)
if (tabsize == -1)
tabsize = WIDTH_OF_TAB;
/* Back up the old terminal settings so that they can be restored. */
tcgetattr(0, &oldterm);
/* Initialize curses mode. If this fails, get out. */
if (initscr() == NULL)
exit(1);
@ -2554,12 +2560,6 @@ int main(int argc, char **argv)
controlright = key_defined(keyvalue);
#endif
#ifndef DISABLE_OPERATINGDIR
/* Set up the operating directory. This entails chdir()ing there,
* so that file reads and writes will be based there. */
init_operating_dir();
#endif
#ifdef DEBUG
fprintf(stderr, "Main: open file\n");
#endif