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-rw-r--r--shell/hush.c160
1 files changed, 80 insertions, 80 deletions
diff --git a/shell/hush.c b/shell/hush.c
index 7c5a442..0e19764 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -148,6 +148,11 @@ static const char *indenter(int i)
* Leak hunting. Use hush_leaktool.sh for post-processing.
*/
#ifdef FOR_HUSH_LEAKTOOL
+/* suppress "warning: no previous prototype..." */
+void *xxmalloc(int lineno, size_t size);
+void *xxrealloc(int lineno, void *ptr, size_t size);
+char *xxstrdup(int lineno, const char *str);
+void xxfree(void *ptr);
void *xxmalloc(int lineno, size_t size)
{
void *ptr = xmalloc((size + 0xff) & ~0xff);
@@ -2474,72 +2479,6 @@ static int run_and_free_list(struct pipe *pi)
return rcode;
}
-/* Remove non-backslashed backslashes and add to "strings" vector.
- * XXX broken if the last character is '\\', check that before calling.
- */
-static char **add_unq_string_to_strings(char **strings, const char *src)
-{
- int cnt;
- const char *s;
- char *v, *dest;
-
- for (cnt = 1, s = src; s && *s; s++) {
- if (*s == '\\') s++;
- cnt++;
- }
- v = dest = xmalloc(cnt);
- for (s = src; s && *s; s++, dest++) {
- if (*s == '\\') s++;
- *dest = *s;
- }
- *dest = '\0';
-
- return add_string_to_strings(strings, v);
-}
-
-/* XXX broken if the last character is '\\', check that before calling */
-static int glob_needed(const char *s)
-{
- for (; *s; s++) {
- if (*s == '\\')
- s++;
- if (strchr("*[?", *s))
- return 1;
- }
- return 0;
-}
-
-static int xglob(char ***pglob, const char *pattern)
-{
- if (glob_needed(pattern)) {
- glob_t globdata;
- int gr;
-
- memset(&globdata, 0, sizeof(globdata));
- gr = glob(pattern, 0, NULL, &globdata);
- debug_printf("glob returned %d\n", gr);
- if (gr == GLOB_NOSPACE)
- bb_error_msg_and_die("out of memory during glob");
- if (gr == GLOB_NOMATCH) {
- globfree(&globdata);
- goto literal;
- }
- if (gr != 0) { /* GLOB_ABORTED ? */
- bb_error_msg("glob(3) error %d", gr);
- }
- if (globdata.gl_pathv && globdata.gl_pathv[0])
- *pglob = add_strings_to_strings(1, *pglob, globdata.gl_pathv);
- globfree(&globdata);
- return gr;
- }
-
- literal:
- /* quote removal, or more accurately, backslash removal */
- *pglob = add_unq_string_to_strings(*pglob, pattern);
- debug_print_strings("after xglob", *pglob);
- return 0;
-}
-
/* expand_strvec_to_strvec() takes a list of strings, expands
* all variable references within and returns a pointer to
* a list of expanded strings, possibly with larger number
@@ -2596,7 +2535,9 @@ static int expand_vars_to_list(o_string *output, int n, char *arg, char or_mask)
o_debug_list("expand_vars_to_list[0]", output, n);
while ((p = strchr(arg, SPECIAL_VAR_SYMBOL)) != NULL) {
+#if ENABLE_HUSH_TICK
o_string subst_result = NULL_O_STRING;
+#endif
o_addQstr(output, arg, p - arg);
o_debug_list("expand_vars_to_list[1]", output, n);
@@ -2661,10 +2602,12 @@ static int expand_vars_to_list(o_string *output, int n, char *arg, char or_mask)
}
}
break;
+#if ENABLE_HUSH_TICK
case '`': {
struct in_str input;
*p = '\0';
arg++;
+//TODO: can we just stuff it into "output" directly?
//bb_error_msg("SUBST '%s' first_ch %x", arg, first_ch);
setup_string_in_str(&input, arg);
process_command_subs(&subst_result, &input, NULL);
@@ -2672,6 +2615,7 @@ static int expand_vars_to_list(o_string *output, int n, char *arg, char or_mask)
val = subst_result.data;
goto store_val;
}
+#endif
default:
*p = '\0';
arg[0] = first_ch & 0x7f;
@@ -2696,7 +2640,9 @@ static int expand_vars_to_list(o_string *output, int n, char *arg, char or_mask)
o_addQstr(output, val, strlen(val));
}
+#if ENABLE_HUSH_TICK
o_free(&subst_result);
+#endif
arg = ++p;
} /* end of "while (SPECIAL_VAR_SYMBOL is found) ..." */
@@ -2731,33 +2677,87 @@ static char **expand_variables(char **argv, char or_mask)
/* output.data (malloced in one block) gets returned in "list" */
list = o_finalize_list(&output, n);
+ return list;
+}
-#ifdef DEBUG_EXPAND
- {
- int m = 0;
- while (m <= n) {
- debug_printf_expand("list[%d]=%p '%s'\n", m, list[m], list[m]);
- m++;
+/* Remove non-backslashed backslashes and add to "strings" vector.
+ * XXX broken if the last character is '\\', check that before calling.
+ */
+static char **add_unq_string_to_strings(char **strings, const char *src)
+{
+ int cnt;
+ const char *s;
+ char *v, *dest;
+
+ for (cnt = 1, s = src; s && *s; s++) {
+ if (*s == '\\') s++;
+ cnt++;
+ }
+ v = dest = xmalloc(cnt);
+ for (s = src; s && *s; s++, dest++) {
+ if (*s == '\\') s++;
+ *dest = *s;
+ }
+ *dest = '\0';
+
+ return add_string_to_strings(strings, v);
+}
+
+/* XXX broken if the last character is '\\', check that before calling */
+static int glob_needed(const char *s)
+{
+ for (; *s; s++) {
+ if (*s == '\\')
+ s++;
+ if (strchr("*[?", *s))
+ return 1;
+ }
+ return 0;
+}
+
+static void xglob(char ***pglob, const char *pattern)
+{
+ if (glob_needed(pattern)) {
+ glob_t globdata;
+ int gr;
+
+ memset(&globdata, 0, sizeof(globdata));
+ gr = glob(pattern, 0, NULL, &globdata);
+ debug_printf("glob returned %d\n", gr);
+ if (gr == GLOB_NOSPACE)
+ bb_error_msg_and_die("out of memory during glob");
+ if (gr == GLOB_NOMATCH) {
+ globfree(&globdata);
+ goto literal;
}
+ if (gr != 0) { /* GLOB_ABORTED ? */
+ bb_error_msg("glob(3) error %d on '%s'", gr, pattern);
+//TODO: testcase for bad glob pattern behavior
+ }
+ if (globdata.gl_pathv && globdata.gl_pathv[0])
+ *pglob = add_strings_to_strings(1, *pglob, globdata.gl_pathv);
+ globfree(&globdata);
+ return;
}
-#endif
- return list;
+
+ literal:
+ /* quote removal, or more accurately, backslash removal */
+ *pglob = add_unq_string_to_strings(*pglob, pattern);
+ debug_print_strings("after xglob", *pglob);
}
+//LEAK is here: callers expect result to be free()able, but we
+//actually require free_strings(). free() leaks strings.
static char **expand_strvec_to_strvec(char **argv)
{
char **exp;
- char **res = NULL;
+ char **res = xzalloc(sizeof(res[0]));
debug_print_strings("expand_strvec_to_strvec: pre expand", argv);
exp = argv = expand_variables(argv, 0);
debug_print_strings("expand_strvec_to_strvec: post expand", argv);
while (*argv) {
- int r = xglob(&res, *argv);
- if (r)
- bb_error_msg("xglob returned %d on '%s'", r, *argv);
-//TODO: testcase for bad glob pattern behavior
- argv++;
+ xglob(&res, *argv++);
}
free(exp);
debug_print_strings("expand_strvec_to_strvec: res", res);
generated by cgit v1.1 at 2024-12-29 15:39:35 +0000