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Rewrite a confusing loop when freeing the arg array on exit and move the check

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for argv being NULL, prompted by parfait via deraadt.

Also fix some definite brokenness when assigning multiple environment variables
in arguments (such as "X=1 Y=2").
This commit is contained in:
Nicholas Marriott 2009-11-11 18:56:07 +00:00
parent 9df4e7597d
commit 89763f2ace
1 changed files with 9 additions and 10 deletions
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19
cmd-string.c
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@ -134,17 +134,15 @@ cmd_string_parse(const char *s, struct cmd_list **cmdlist, char **cause)
if (ch != EOF)
break;
if (argc == 0)
goto out;
for (i = 0; i < argc; i++) {
equals = strchr(argv[i], '=');
whitespace = argv[i] + strcspn(argv[i], " \t");
while (argc != 0) {
equals = strchr(argv[0], '=');
whitespace = argv[0] + strcspn(argv[0], " \t");
if (equals == NULL || equals > whitespace)
break;
environ_put(&global_environ, argv[i]);
memmove(&argv[i], &argv[i + 1], argc - i - 1);
environ_put(&global_environ, argv[0]);
argc--;
memmove(argv, argv + 1, argc * (sizeof *argv));
}
if (argc == 0)
goto out;
@ -189,10 +187,11 @@ out:
if (buf != NULL)
xfree(buf);
while (--argc >= 0)
xfree(argv[argc]);
if (argv != NULL)
if (argv != NULL) {
for (i = 0; i < argc; i++)
xfree(argv[argc]);
xfree(argv);
}
return (rval);
}