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authorDenys Vlasenko2021-06-15 16:05:57 +0200
committerDenys Vlasenko2021-11-23 05:31:30 +0100
commit56a335378ac100d51c30b21eee499a2effa37fba (patch)
treeac77b70f346a03a43ae7219be5b9704788d4d624 /shell
parent5b939a6d290651bcd836083d2a3e6fa6ff7bc636 (diff)
downloadbusybox-56a335378ac100d51c30b21eee499a2effa37fba.zip
busybox-56a335378ac100d51c30b21eee499a2effa37fba.tar.gz
hush: fix handling of \^C and "^C"
function old new delta parse_stream 2238 2252 +14 encode_string 243 256 +13 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/0 up/down: 27/0) Total: 27 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> (cherry picked from commit 1b7a9b68d0e9aa19147d7fda16eb9a6b54156985)
Diffstat (limited to 'shell')
-rw-r--r--shell/ash_test/ash-misc/control_char3.right1
-rwxr-xr-xshell/ash_test/ash-misc/control_char3.tests2
-rw-r--r--shell/ash_test/ash-misc/control_char4.right1
-rwxr-xr-xshell/ash_test/ash-misc/control_char4.tests2
-rw-r--r--shell/hush.c11
-rw-r--r--shell/hush_test/hush-misc/control_char3.right1
-rwxr-xr-xshell/hush_test/hush-misc/control_char3.tests2
-rw-r--r--shell/hush_test/hush-misc/control_char4.right1
-rwxr-xr-xshell/hush_test/hush-misc/control_char4.tests2
9 files changed, 23 insertions, 0 deletions
diff --git a/shell/ash_test/ash-misc/control_char3.right b/shell/ash_test/ash-misc/control_char3.right
new file mode 100644
index 0000000..283e02c
--- /dev/null
+++ b/shell/ash_test/ash-misc/control_char3.right
@@ -0,0 +1 @@
+SHELL: line 1: : not found
diff --git a/shell/ash_test/ash-misc/control_char3.tests b/shell/ash_test/ash-misc/control_char3.tests
new file mode 100755
index 0000000..4359db3
--- /dev/null
+++ b/shell/ash_test/ash-misc/control_char3.tests
@@ -0,0 +1,2 @@
+# (set argv0 to "SHELL" to avoid "/path/to/shell: blah" in error messages)
+$THIS_SH -c '\' SHELL
diff --git a/shell/ash_test/ash-misc/control_char4.right b/shell/ash_test/ash-misc/control_char4.right
new file mode 100644
index 0000000..2bf18e6
--- /dev/null
+++ b/shell/ash_test/ash-misc/control_char4.right
@@ -0,0 +1 @@
+SHELL: line 1: -: not found
diff --git a/shell/ash_test/ash-misc/control_char4.tests b/shell/ash_test/ash-misc/control_char4.tests
new file mode 100755
index 0000000..48010f1
--- /dev/null
+++ b/shell/ash_test/ash-misc/control_char4.tests
@@ -0,0 +1,2 @@
+# (set argv0 to "SHELL" to avoid "/path/to/shell: blah" in error messages)
+$THIS_SH -c '"-"' SHELL
diff --git a/shell/hush.c b/shell/hush.c
index 9fead37..249728b 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -5235,6 +5235,11 @@ static int encode_string(o_string *as_string,
}
#endif
o_addQchr(dest, ch);
+ if (ch == SPECIAL_VAR_SYMBOL) {
+ /* Convert "^C" to corresponding special variable reference */
+ o_addchr(dest, SPECIAL_VAR_QUOTED_SVS);
+ o_addchr(dest, SPECIAL_VAR_SYMBOL);
+ }
goto again;
#undef as_string
}
@@ -5346,6 +5351,11 @@ static struct pipe *parse_stream(char **pstring,
if (ch == '\n')
continue; /* drop \<newline>, get next char */
nommu_addchr(&ctx.as_string, '\\');
+ if (ch == SPECIAL_VAR_SYMBOL) {
+ nommu_addchr(&ctx.as_string, ch);
+ /* Convert \^C to corresponding special variable reference */
+ goto case_SPECIAL_VAR_SYMBOL;
+ }
o_addchr(&ctx.word, '\\');
if (ch == EOF) {
/* Testcase: eval 'echo Ok\' */
@@ -5670,6 +5680,7 @@ static struct pipe *parse_stream(char **pstring,
/* Note: nommu_addchr(&ctx.as_string, ch) is already done */
switch (ch) {
+ case_SPECIAL_VAR_SYMBOL:
case SPECIAL_VAR_SYMBOL:
/* Convert raw ^C to corresponding special variable reference */
o_addchr(&ctx.word, SPECIAL_VAR_SYMBOL);
diff --git a/shell/hush_test/hush-misc/control_char3.right b/shell/hush_test/hush-misc/control_char3.right
new file mode 100644
index 0000000..94b4f86
--- /dev/null
+++ b/shell/hush_test/hush-misc/control_char3.right
@@ -0,0 +1 @@
+hush: can't execute '': No such file or directory
diff --git a/shell/hush_test/hush-misc/control_char3.tests b/shell/hush_test/hush-misc/control_char3.tests
new file mode 100755
index 0000000..4359db3
--- /dev/null
+++ b/shell/hush_test/hush-misc/control_char3.tests
@@ -0,0 +1,2 @@
+# (set argv0 to "SHELL" to avoid "/path/to/shell: blah" in error messages)
+$THIS_SH -c '\' SHELL
diff --git a/shell/hush_test/hush-misc/control_char4.right b/shell/hush_test/hush-misc/control_char4.right
new file mode 100644
index 0000000..698e214
--- /dev/null
+++ b/shell/hush_test/hush-misc/control_char4.right
@@ -0,0 +1 @@
+hush: can't execute '-': No such file or directory
diff --git a/shell/hush_test/hush-misc/control_char4.tests b/shell/hush_test/hush-misc/control_char4.tests
new file mode 100755
index 0000000..48010f1
--- /dev/null
+++ b/shell/hush_test/hush-misc/control_char4.tests
@@ -0,0 +1,2 @@
+# (set argv0 to "SHELL" to avoid "/path/to/shell: blah" in error messages)
+$THIS_SH -c '"-"' SHELL