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authorDenis Vlasenko2008-06-18 16:29:32 +0000
committerDenis Vlasenko2008-06-18 16:29:32 +0000
commitab876cd107fe6ca274f58bae3264396745d8e5f9 (patch)
treec94ecba9c7d10af007294333e9b4c80efe079cfb
parent985de15bf3f39b5e32e34cadaf6947708197f018 (diff)
downloadbusybox-ab876cd107fe6ca274f58bae3264396745d8e5f9.zip
busybox-ab876cd107fe6ca274f58bae3264396745d8e5f9.tar.gz
hush: add testsuite for "no globbing in redirection" rule.
simplify redirection habdling
-rw-r--r--shell/hush.c69
-rw-r--r--shell/hush_test/hush-glob/glob_redir.right2
-rwxr-xr-xshell/hush_test/hush-glob/glob_redir.tests9
-rw-r--r--shell/hush_test/hush-parsing/escape3.right23
-rwxr-xr-xshell/hush_test/hush-parsing/escape3.tests8
-rw-r--r--shell/hush_test/hush-parsing/redir_space.right3
-rwxr-xr-xshell/hush_test/hush-parsing/redir_space.tests6
7 files changed, 75 insertions, 45 deletions
diff --git a/shell/hush.c b/shell/hush.c
index cb28976..f81203e 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -287,7 +287,7 @@ struct redir_struct {
redir_type type; /* type of redirection */
int fd; /* file descriptor being redirected */
int dup; /* -1, or file descriptor being duplicated */
- char **glob_word; /* *word.gl_pathv is the filename */
+ char *rd_filename; /* filename */
};
struct child_prog {
@@ -1304,14 +1304,14 @@ static int setup_redirects(struct child_prog *prog, int squirrel[])
struct redir_struct *redir;
for (redir = prog->redirects; redir; redir = redir->next) {
- if (redir->dup == -1 && redir->glob_word == NULL) {
+ if (redir->dup == -1 && redir->rd_filename == NULL) {
/* something went wrong in the parse. Pretend it didn't happen */
continue;
}
if (redir->dup == -1) {
char *p;
mode = redir_table[redir->type].mode;
- p = expand_string_to_string(redir->glob_word[0]);
+ p = expand_string_to_string(redir->rd_filename);
openfd = open_or_warn(p, mode);
free(p);
if (openfd < 0) {
@@ -2227,10 +2227,10 @@ static int free_pipe(struct pipe *pi, int indent)
debug_printf_clean("%s redirect %d%s", indenter(indent), r->fd, redir_table[r->type].descrip);
if (r->dup == -1) {
/* guard against the case >$FOO, where foo is unset or blank */
- if (r->glob_word) {
- debug_printf_clean(" %s\n", r->glob_word[0]);
- free_strings(r->glob_word);
- r->glob_word = NULL;
+ if (r->rd_filename) {
+ debug_printf_clean(" %s\n", r->rd_filename);
+ free(r->rd_filename);
+ r->rd_filename = NULL;
}
} else {
debug_printf_clean("&%d\n", r->dup);
@@ -2680,7 +2680,7 @@ static int setup_redirect(struct p_context *ctx, int fd, redir_type style,
}
redir = xzalloc(sizeof(struct redir_struct));
/* redir->next = NULL; */
- /* redir->glob_word = NULL; */
+ /* redir->rd_filename = NULL; */
if (last_redir) {
last_redir->next = redir;
} else {
@@ -2857,17 +2857,17 @@ static int reserved_word(const o_string *word, struct p_context *ctx)
static int done_word(o_string *word, struct p_context *ctx)
{
struct child_prog *child = ctx->child;
- char ***glob_target;
debug_printf_parse("done_word entered: '%s' %p\n", word->data, child);
- if (word->length == 0) {
- if (!word->nonnull) {
- debug_printf_parse("done_word return 0: true null, ignored\n");
- return 0;
- }
+ if (word->length == 0 && word->nonnull == 0) {
+ debug_printf_parse("done_word return 0: true null, ignored\n");
+ return 0;
}
if (ctx->pending_redirect) {
- glob_target = &ctx->pending_redirect->glob_word;
+ /* We do not glob in e.g. >*.tmp case. bash seems to glob here
+ * only if run as "bash", not "sh" */
+ ctx->pending_redirect->rd_filename = xstrdup(word->data);
+ debug_printf("word stored in rd_filename: '%s'\n", word->data);
} else {
if (child->group) { /* TODO: example how to trigger? */
syntax(NULL);
@@ -2882,46 +2882,25 @@ static int done_word(o_string *word, struct p_context *ctx)
return (ctx->res_w == RES_SNTX);
}
}
- if (word->nonnull) {
+ if (word->nonnull
+ /* && word->data[0] != */
+ ) {
/* Insert "empty variable" reference, this makes e.g. "", '',
* $empty"" etc to not disappear */
o_addchr(word, SPECIAL_VAR_SYMBOL);
o_addchr(word, SPECIAL_VAR_SYMBOL);
}
- glob_target = &child->argv;
- }
-
-//FIXME: we had globbing here, but now it's moved! Do we glob in e.g. ">*.tmp" now!?
-
- /*if (word->length || word->nonnull) - true */ {
- *glob_target = add_malloced_string_to_strings(*glob_target, xstrdup(word->data));
- debug_print_strings("glob_target appended", *glob_target);
+ child->argv = add_malloced_string_to_strings(child->argv, xstrdup(word->data));
+ debug_print_strings("word appended to argv", child->argv);
}
o_reset(word);
- if (ctx->pending_redirect) {
- /* NB: don't free_strings(ctx->pending_redirect->glob_word) here */
- if (ctx->pending_redirect->glob_word
- && ctx->pending_redirect->glob_word[0]
- && ctx->pending_redirect->glob_word[1]
- ) {
- /* more than one word resulted from globbing redir */
- ctx->pending_redirect = NULL;
- bb_error_msg("ambiguous redirect");
- debug_printf_parse("done_word return 1: ambiguous redirect\n");
- return 1;
- }
- ctx->pending_redirect = NULL;
- }
+ ctx->pending_redirect = NULL;
+
#if ENABLE_HUSH_LOOPS
- /* comment? is it forcing "for" to have just one word (variable name)? */
- if (ctx->res_w == RES_FOR) {
-//TESTING
-//looks like (word->length == 0 && !word->nonnull) is true here, always
-//(due to o_reset). done_word would return at once. Why then?
-// done_word(word, ctx);
+ /* Force FOR to have just one word (variable name) */
+ if (ctx->res_w == RES_FOR)
done_pipe(ctx, PIPE_SEQ);
- }
#endif
debug_printf_parse("done_word return 0\n");
return 0;
diff --git a/shell/hush_test/hush-glob/glob_redir.right b/shell/hush_test/hush-glob/glob_redir.right
new file mode 100644
index 0000000..fbd0309
--- /dev/null
+++ b/shell/hush_test/hush-glob/glob_redir.right
@@ -0,0 +1,2 @@
+z.tmp:
+?.tmp: TEST
diff --git a/shell/hush_test/hush-glob/glob_redir.tests b/shell/hush_test/hush-glob/glob_redir.tests
new file mode 100755
index 0000000..621d120
--- /dev/null
+++ b/shell/hush_test/hush-glob/glob_redir.tests
@@ -0,0 +1,9 @@
+# Redirections are not globbed.
+# bash:
+# if run as "sh", they are not globbed, but
+# if run as "bash", they are!
+>z.tmp
+echo TEST >?.tmp
+echo 'z.tmp:' `cat 'z.tmp'`
+echo '?.tmp:' `cat '?.tmp'`
+rm 'z.tmp' '?.tmp'
diff --git a/shell/hush_test/hush-parsing/escape3.right b/shell/hush_test/hush-parsing/escape3.right
new file mode 100644
index 0000000..da02a97
--- /dev/null
+++ b/shell/hush_test/hush-parsing/escape3.right
@@ -0,0 +1,23 @@
+v: a \ b \\ c \\\ d \\\\ e
+v: a \ b \\ c \\\ d \\\\ e
+Unquoted:
+.a.
+.\.
+.b.
+.\\.
+.c.
+.\\\.
+.d.
+.\\\\.
+.e.
+Quoted:
+.a.
+.\.
+.b.
+.\\.
+.c.
+.\\\.
+.d.
+.\\\\.
+.e.
+done
diff --git a/shell/hush_test/hush-parsing/escape3.tests b/shell/hush_test/hush-parsing/escape3.tests
new file mode 100755
index 0000000..111ed40
--- /dev/null
+++ b/shell/hush_test/hush-parsing/escape3.tests
@@ -0,0 +1,8 @@
+v='a \ b \\ c \\\ d \\\\ e'
+echo v: $v
+echo v: "$v"
+echo Unquoted:
+for a in $v; do echo .$a.; done
+echo Quoted:
+for a in $v; do echo ".$a."; done
+echo done
diff --git a/shell/hush_test/hush-parsing/redir_space.right b/shell/hush_test/hush-parsing/redir_space.right
new file mode 100644
index 0000000..0842952
--- /dev/null
+++ b/shell/hush_test/hush-parsing/redir_space.right
@@ -0,0 +1,3 @@
+z1.tmp: 1
+z2.tmp: 1
+"z1.tmp z2.tmp": TEST 0
diff --git a/shell/hush_test/hush-parsing/redir_space.tests b/shell/hush_test/hush-parsing/redir_space.tests
new file mode 100755
index 0000000..c0b5430
--- /dev/null
+++ b/shell/hush_test/hush-parsing/redir_space.tests
@@ -0,0 +1,6 @@
+v='z1.tmp z2.tmp'
+echo TEST >$v
+echo 'z1.tmp:' `cat 'z1.tmp' 2>/dev/null; echo $?`
+echo 'z2.tmp:' `cat 'z2.tmp' 2>/dev/null; echo $?`
+echo '"z1.tmp z2.tmp":' `cat 'z1.tmp z2.tmp' 2>/dev/null; echo $?`
+rm z*.tmp