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Merge #6224 from justinmk/test-fish-backtick

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test: backtick-expansion for `shell=fish`
This commit is contained in:
Justin M. Keyes 2017-03-06 23:44:54 +01:00 committed by GitHub
commit 1215084676
3 changed files with 251 additions and 208 deletions
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405
src/nvim/os_unix.c
View File

@ -62,9 +62,7 @@ static int selinux_enabled = -1;
#if defined(HAVE_SELINUX)
/*
* Copy security info from "from_file" to "to_file".
*/
// Copy security info from "from_file" to "to_file".
void mch_copy_sec(char_u *from_file, char_u *to_file)
{
if (from_file == NULL)
@ -78,11 +76,12 @@ void mch_copy_sec(char_u *from_file, char_u *to_file)
security_context_t to_context = NULL;
if (getfilecon((char *)from_file, &from_context) < 0) {
/* If the filesystem doesn't support extended attributes,
the original had no special security context and the
target cannot have one either. */
if (errno == EOPNOTSUPP)
// If the filesystem doesn't support extended attributes,
// the original had no special security context and the
// target cannot have one either.
if (errno == EOPNOTSUPP) {
return;
}
MSG_PUTS(_("\nCould not get security context for "));
msg_outtrans(from_file);
@ -107,21 +106,17 @@ void mch_copy_sec(char_u *from_file, char_u *to_file)
freecon(from_context);
}
}
#endif /* HAVE_SELINUX */
#endif // HAVE_SELINUX
/*
* Return a pointer to the ACL of file "fname" in allocated memory.
* Return NULL if the ACL is not available for whatever reason.
*/
// Return a pointer to the ACL of file "fname" in allocated memory.
// Return NULL if the ACL is not available for whatever reason.
vim_acl_T mch_get_acl(char_u *fname)
{
vim_acl_T ret = NULL;
return ret;
}
/*
* Set the ACL of file "fname" to "acl" (unless it's NULL).
*/
// Set the ACL of file "fname" to "acl" (unless it's NULL).
void mch_set_acl(char_u *fname, vim_acl_T aclent)
{
if (aclent == NULL)
@ -141,7 +136,7 @@ void mch_exit(int r)
ui_builtin_stop();
ui_flush();
ml_close_all(true); /* remove all memfiles */
ml_close_all(true); // remove all memfiles
event_teardown();
stream_set_blocking(input_global_fd(), true); // normalize stream (#2598)
@ -198,17 +193,22 @@ int mch_expand_wildcards(int num_pat, char_u **pat, int *num_file,
int check_spaces;
static bool did_find_nul = false;
bool ampersent = false;
/* vimglob() function to define for Posix shell */
// vimglob() function to define for Posix shell
static char *sh_vimglob_func =
"vimglob() { while [ $# -ge 1 ]; do echo \"$1\"; shift; done }; vimglob >";
*num_file = 0; /* default: no files found */
bool is_fish_shell =
#if defined(UNIX)
STRNCMP(invocation_path_tail(p_sh, NULL), "fish", 4) == 0;
#else
false;
#endif
*num_file = 0; // default: no files found
*file = NULL;
/*
* If there are no wildcards, just copy the names to allocated memory.
* Saves a lot of time, because we don't have to start a new shell.
*/
// If there are no wildcards, just copy the names to allocated memory.
// Saves a lot of time, because we don't have to start a new shell.
if (!have_wildcard(num_pat, pat)) {
save_patterns(num_pat, pat, num_file, file);
return OK;
@ -219,87 +219,99 @@ int mch_expand_wildcards(int num_pat, char_u **pat, int *num_file,
return FAIL;
}
/*
* Don't allow the use of backticks in secure and restricted mode.
*/
if (secure || restricted)
for (i = 0; i < num_pat; ++i)
// Don't allow the use of backticks in secure and restricted mode.
if (secure || restricted) {
for (i = 0; i < num_pat; i++) {
if (vim_strchr(pat[i], '`') != NULL
&& (check_restricted() || check_secure()))
&& (check_restricted() || check_secure())) {
return FAIL;
}
}
}
/*
* get a name for the temp file
*/
// get a name for the temp file
if ((tempname = vim_tempname()) == NULL) {
EMSG(_(e_notmp));
return FAIL;
}
/*
* Let the shell expand the patterns and write the result into the temp
* file.
* STYLE_BT: NL separated
* If expanding `cmd` execute it directly.
* STYLE_GLOB: NUL separated
* If we use *csh, "glob" will work better than "echo".
* STYLE_PRINT: NL or NUL separated
* If we use *zsh, "print -N" will work better than "glob".
* STYLE_VIMGLOB: NL separated
* If we use *sh*, we define "vimglob()".
* STYLE_ECHO: space separated.
* A shell we don't know, stay safe and use "echo".
*/
// Let the shell expand the patterns and write the result into the temp
// file.
// STYLE_BT: NL separated
// If expanding `cmd` execute it directly.
// STYLE_GLOB: NUL separated
// If we use *csh, "glob" will work better than "echo".
// STYLE_PRINT: NL or NUL separated
// If we use *zsh, "print -N" will work better than "glob".
// STYLE_VIMGLOB: NL separated
// If we use *sh*, we define "vimglob()".
// STYLE_ECHO: space separated.
// A shell we don't know, stay safe and use "echo".
if (num_pat == 1 && *pat[0] == '`'
&& (len = STRLEN(pat[0])) > 2
&& *(pat[0] + len - 1) == '`')
&& *(pat[0] + len - 1) == '`') {
shell_style = STYLE_BT;
else if ((len = STRLEN(p_sh)) >= 3) {
if (STRCMP(p_sh + len - 3, "csh") == 0)
} else if ((len = STRLEN(p_sh)) >= 3) {
if (STRCMP(p_sh + len - 3, "csh") == 0) {
shell_style = STYLE_GLOB;
else if (STRCMP(p_sh + len - 3, "zsh") == 0)
} else if (STRCMP(p_sh + len - 3, "zsh") == 0) {
shell_style = STYLE_PRINT;
}
}
if (shell_style == STYLE_ECHO && strstr((char *)path_tail(p_sh),
"sh") != NULL)
shell_style = STYLE_VIMGLOB;
/* Compute the length of the command. We need 2 extra bytes: for the
* optional '&' and for the NUL.
* Worst case: "unset nonomatch; print -N >" plus two is 29 */
// Compute the length of the command. We need 2 extra bytes: for the
// optional '&' and for the NUL.
// Worst case: "unset nonomatch; print -N >" plus two is 29
len = STRLEN(tempname) + 29;
if (shell_style == STYLE_VIMGLOB)
len += STRLEN(sh_vimglob_func);
for (i = 0; i < num_pat; ++i) {
/* Count the length of the patterns in the same way as they are put in
* "command" below. */
++len; /* add space */
for (j = 0; pat[i][j] != NUL; ++j) {
if (vim_strchr(SHELL_SPECIAL, pat[i][j]) != NULL)
++len; /* may add a backslash */
++len;
for (i = 0; i < num_pat; i++) {
// Count the length of the patterns in the same way as they are put in
// "command" below.
len++; // add space
for (j = 0; pat[i][j] != NUL; j++) {
if (vim_strchr(SHELL_SPECIAL, pat[i][j]) != NULL) {
len++; // may add a backslash
}
len++;
}
}
if (is_fish_shell) {
len += sizeof("egin;"" end") - 1;
}
command = xmalloc(len);
/*
* Build the shell command:
* - Set $nonomatch depending on EW_NOTFOUND (hopefully the shell
* recognizes this).
* - Add the shell command to print the expanded names.
* - Add the temp file name.
* - Add the file name patterns.
*/
// Build the shell command:
// - Set $nonomatch depending on EW_NOTFOUND (hopefully the shell
// recognizes this).
// - Add the shell command to print the expanded names.
// - Add the temp file name.
// - Add the file name patterns.
if (shell_style == STYLE_BT) {
/* change `command; command& ` to (command; command ) */
// change `command; command& ` to (command; command )
if (is_fish_shell) {
STRCPY(command, "begin; ");
} else {
STRCPY(command, "(");
STRCAT(command, pat[0] + 1); /* exclude first backtick */
}
STRCAT(command, pat[0] + 1); // exclude first backtick
p = command + STRLEN(command) - 1;
*p-- = ')'; /* remove last backtick */
while (p > command && ascii_iswhite(*p))
--p;
if (*p == '&') { /* remove trailing '&' */
if (is_fish_shell) {
*p-- = ';';
STRCAT(command, " end");
} else {
*p-- = ')'; // remove last backtick
}
while (p > command && ascii_iswhite(*p)) {
p--;
}
if (*p == '&') { // remove trailing '&'
ampersent = true;
*p = ' ';
}
@ -321,113 +333,109 @@ int mch_expand_wildcards(int num_pat, char_u **pat, int *num_file,
STRCAT(command, tempname);
if (shell_style != STYLE_BT)
for (i = 0; i < num_pat; ++i) {
/* Put a backslash before special
* characters, except inside ``. */
if (shell_style != STYLE_BT) {
for (i = 0; i < num_pat; i++) {
// Put a backslash before special
// characters, except inside ``.
bool intick = false;
p = command + STRLEN(command);
*p++ = ' ';
for (j = 0; pat[i][j] != NUL; ++j) {
if (pat[i][j] == '`')
for (j = 0; pat[i][j] != NUL; j++) {
if (pat[i][j] == '`') {
intick = !intick;
else if (pat[i][j] == '\\' && pat[i][j + 1] != NUL) {
/* Remove a backslash, take char literally. But keep
* backslash inside backticks, before a special character
* and before a backtick. */
} else if (pat[i][j] == '\\' && pat[i][j + 1] != NUL) {
// Remove a backslash, take char literally. But keep
// backslash inside backticks, before a special character
// and before a backtick.
if (intick
|| vim_strchr(SHELL_SPECIAL, pat[i][j + 1]) != NULL
|| pat[i][j + 1] == '`')
|| pat[i][j + 1] == '`') {
*p++ = '\\';
++j;
}
j++;
} else if (!intick
&& ((flags & EW_KEEPDOLLAR) == 0 || pat[i][j] != '$')
&& vim_strchr(SHELL_SPECIAL, pat[i][j]) != NULL)
/* Put a backslash before a special character, but not
* when inside ``. And not for $var when EW_KEEPDOLLAR is
* set. */
&& vim_strchr(SHELL_SPECIAL, pat[i][j]) != NULL) {
// Put a backslash before a special character, but not
// when inside ``. And not for $var when EW_KEEPDOLLAR is
// set.
*p++ = '\\';
}
/* Copy one character. */
// Copy one character.
*p++ = pat[i][j];
}
*p = NUL;
}
}
if (flags & EW_SILENT) {
shellopts |= kShellOptHideMess;
}
if (ampersent)
STRCAT(command, "&"); /* put the '&' after the redirection */
if (ampersent) {
STRCAT(command, "&"); // put the '&' after the redirection
}
/*
* Using zsh -G: If a pattern has no matches, it is just deleted from
* the argument list, otherwise zsh gives an error message and doesn't
* expand any other pattern.
*/
if (shell_style == STYLE_PRINT)
extra_shell_arg = (char_u *)"-G"; /* Use zsh NULL_GLOB option */
// Using zsh -G: If a pattern has no matches, it is just deleted from
// the argument list, otherwise zsh gives an error message and doesn't
// expand any other pattern.
if (shell_style == STYLE_PRINT) {
extra_shell_arg = (char_u *)"-G"; // Use zsh NULL_GLOB option
/*
* If we use -f then shell variables set in .cshrc won't get expanded.
* vi can do it, so we will too, but it is only necessary if there is a "$"
* in one of the patterns, otherwise we can still use the fast option.
*/
else if (shell_style == STYLE_GLOB && !have_dollars(num_pat, pat))
extra_shell_arg = (char_u *)"-f"; /* Use csh fast option */
// If we use -f then shell variables set in .cshrc won't get expanded.
// vi can do it, so we will too, but it is only necessary if there is a "$"
// in one of the patterns, otherwise we can still use the fast option.
} else if (shell_style == STYLE_GLOB && !have_dollars(num_pat, pat)) {
extra_shell_arg = (char_u *)"-f"; // Use csh fast option
}
/*
* execute the shell command
*/
// execute the shell command
i = call_shell(
command,
shellopts,
extra_shell_arg
);
/* When running in the background, give it some time to create the temp
* file, but don't wait for it to finish. */
if (ampersent)
// When running in the background, give it some time to create the temp
// file, but don't wait for it to finish.
if (ampersent) {
os_delay(10L, true);
}
xfree(command);
if (i) { /* os_call_shell() failed */
if (i) { // os_call_shell() failed
os_remove((char *)tempname);
xfree(tempname);
/*
* With interactive completion, the error message is not printed.
*/
if (!(flags & EW_SILENT))
{
redraw_later_clear(); /* probably messed up screen */
msg_putchar('\n'); /* clear bottom line quickly */
// With interactive completion, the error message is not printed.
if (!(flags & EW_SILENT)) {
redraw_later_clear(); // probably messed up screen
msg_putchar('\n'); // clear bottom line quickly
#if SIZEOF_LONG > SIZEOF_INT
assert(Rows <= (long)INT_MAX + 1);
#endif
cmdline_row = (int)(Rows - 1); /* continue on last line */
cmdline_row = (int)(Rows - 1); // continue on last line
MSG(_(e_wildexpand));
msg_start(); /* don't overwrite this message */
msg_start(); // don't overwrite this message
}
/* If a `cmd` expansion failed, don't list `cmd` as a match, even when
* EW_NOTFOUND is given */
if (shell_style == STYLE_BT)
// If a `cmd` expansion failed, don't list `cmd` as a match, even when
// EW_NOTFOUND is given
if (shell_style == STYLE_BT) {
return FAIL;
}
goto notfound;
}
/*
* read the names from the file into memory
*/
// read the names from the file into memory
fd = fopen((char *)tempname, READBIN);
if (fd == NULL) {
/* Something went wrong, perhaps a file name with a special char. */
// Something went wrong, perhaps a file name with a special char.
if (!(flags & EW_SILENT)) {
MSG(_(e_wildexpand));
msg_start(); /* don't overwrite this message */
msg_start(); // don't overwrite this message
}
xfree(tempname);
goto notfound;
@ -438,7 +446,7 @@ int mch_expand_wildcards(int num_pat, char_u **pat, int *num_file,
fclose(fd);
return FAIL;
}
long long templen = ftell(fd); /* get size of temp file */
int64_t templen = ftell(fd); // get size of temp file
if (templen < 0) {
xfree(tempname);
fclose(fd);
@ -456,7 +464,7 @@ int mch_expand_wildcards(int num_pat, char_u **pat, int *num_file,
fclose(fd);
os_remove((char *)tempname);
if (readlen != len) {
/* unexpected read error */
// unexpected read error
EMSG2(_(e_notread), tempname);
xfree(tempname);
xfree(buffer);
@ -464,41 +472,40 @@ int mch_expand_wildcards(int num_pat, char_u **pat, int *num_file,
}
xfree(tempname);
/* file names are separated with Space */
// file names are separated with Space
if (shell_style == STYLE_ECHO) {
buffer[len] = '\n'; /* make sure the buffer ends in NL */
buffer[len] = '\n'; // make sure the buffer ends in NL
p = buffer;
for (i = 0; *p != '\n'; ++i) { /* count number of entries */
while (*p != ' ' && *p != '\n')
++p;
p = skipwhite(p); /* skip to next entry */
for (i = 0; *p != '\n'; i++) { // count number of entries
while (*p != ' ' && *p != '\n') {
p++;
}
p = skipwhite(p); // skip to next entry
}
/* file names are separated with NL */
else if (shell_style == STYLE_BT || shell_style == STYLE_VIMGLOB) {
buffer[len] = NUL; /* make sure the buffer ends in NUL */
// file names are separated with NL
} else if (shell_style == STYLE_BT || shell_style == STYLE_VIMGLOB) {
buffer[len] = NUL; // make sure the buffer ends in NUL
p = buffer;
for (i = 0; *p != NUL; ++i) { /* count number of entries */
while (*p != '\n' && *p != NUL)
++p;
if (*p != NUL)
++p;
p = skipwhite(p); /* skip leading white space */
for (i = 0; *p != NUL; i++) { // count number of entries
while (*p != '\n' && *p != NUL) {
p++;
}
if (*p != NUL) {
p++;
}
/* file names are separated with NUL */
else {
/*
* Some versions of zsh use spaces instead of NULs to separate
* results. Only do this when there is no NUL before the end of the
* buffer, otherwise we would never be able to use file names with
* embedded spaces when zsh does use NULs.
* When we found a NUL once, we know zsh is OK, set did_find_nul and
* don't check for spaces again.
*/
p = skipwhite(p); // skip leading white space
}
// file names are separated with NUL
} else {
// Some versions of zsh use spaces instead of NULs to separate
// results. Only do this when there is no NUL before the end of the
// buffer, otherwise we would never be able to use file names with
// embedded spaces when zsh does use NULs.
// When we found a NUL once, we know zsh is OK, set did_find_nul and
// don't check for spaces again.
check_spaces = false;
if (shell_style == STYLE_PRINT && !did_find_nul) {
/* If there is a NUL, set did_find_nul, else set check_spaces */
// If there is a NUL, set did_find_nul, else set check_spaces
buffer[len] = NUL;
if (len && (int)STRLEN(buffer) < (int)len)
did_find_nul = true;
@ -506,72 +513,69 @@ int mch_expand_wildcards(int num_pat, char_u **pat, int *num_file,
check_spaces = true;
}
/*
* Make sure the buffer ends with a NUL. For STYLE_PRINT there
* already is one, for STYLE_GLOB it needs to be added.
*/
if (len && buffer[len - 1] == NUL)
--len;
else
// Make sure the buffer ends with a NUL. For STYLE_PRINT there
// already is one, for STYLE_GLOB it needs to be added.
if (len && buffer[len - 1] == NUL) {
len--;
} else {
buffer[len] = NUL;
}
i = 0;
for (p = buffer; p < buffer + len; ++p)
if (*p == NUL || (*p == ' ' && check_spaces)) { /* count entry */
++i;
for (p = buffer; p < buffer + len; p++) {
if (*p == NUL || (*p == ' ' && check_spaces)) { // count entry
i++;
*p = NUL;
}
if (len)
++i; /* count last entry */
}
if (len) {
i++; // count last entry
}
}
assert(buffer[len] == NUL || buffer[len] == '\n');
if (i == 0) {
/*
* Can happen when using /bin/sh and typing ":e $NO_SUCH_VAR^I".
* /bin/sh will happily expand it to nothing rather than returning an
* error; and hey, it's good to check anyway -- webb.
*/
// Can happen when using /bin/sh and typing ":e $NO_SUCH_VAR^I".
// /bin/sh will happily expand it to nothing rather than returning an
// error; and hey, it's good to check anyway -- webb.
xfree(buffer);
goto notfound;
}
*num_file = i;
*file = xmalloc(sizeof(char_u *) * (size_t)i);
/*
* Isolate the individual file names.
*/
// Isolate the individual file names.
p = buffer;
for (i = 0; i < *num_file; ++i) {
(*file)[i] = p;
/* Space or NL separates */
// Space or NL separates
if (shell_style == STYLE_ECHO || shell_style == STYLE_BT
|| shell_style == STYLE_VIMGLOB) {
while (!(shell_style == STYLE_ECHO && *p == ' ')
&& *p != '\n' && *p != NUL)
++p;
if (p == buffer + len) /* last entry */
*p = NUL;
else {
*p++ = NUL;
p = skipwhite(p); /* skip to next entry */
&& *p != '\n' && *p != NUL) {
p++;
}
} else { /* NUL separates */
while (*p && p < buffer + len) /* skip entry */
++p;
++p; /* skip NUL */
if (p == buffer + len) { // last entry
*p = NUL;
} else {
*p++ = NUL;
p = skipwhite(p); // skip to next entry
}
} else { // NUL separates
while (*p && p < buffer + len) { // skip entry
p++;
}
p++; // skip NUL
}
}
/*
* Move the file names to allocated memory.
*/
// Move the file names to allocated memory.
for (j = 0, i = 0; i < *num_file; i++) {
// Require the files to exist. Helps when using /bin/sh
if (!(flags & EW_NOTFOUND) && !os_path_exists((*file)[i])) {
continue;
}
/* check if this entry should be included */
// check if this entry should be included
dir = (os_isdir((*file)[i]));
if ((dir && !(flags & EW_DIR)) || (!dir && !(flags & EW_FILE)))
continue;
@ -584,14 +588,15 @@ int mch_expand_wildcards(int num_pat, char_u **pat, int *num_file,
p = xmalloc(STRLEN((*file)[i]) + 1 + dir);
STRCPY(p, (*file)[i]);
if (dir)
add_pathsep((char *)p); /* add '/' to a directory name */
if (dir) {
add_pathsep((char *)p); // add '/' to a directory name
}
(*file)[j++] = p;
}
xfree(buffer);
*num_file = j;
if (*num_file == 0) { /* rejected all entries */
if (*num_file == 0) { // rejected all entries
xfree(*file);
*file = NULL;
goto notfound;
@ -619,8 +624,8 @@ static void save_patterns(int num_pat, char_u **pat, int *num_file,
for (i = 0; i < num_pat; i++) {
s = vim_strsave(pat[i]);
/* Be compatible with expand_filename(): halve the number of
* backslashes. */
// Be compatible with expand_filename(): halve the number of
// backslashes.
backslash_halve(s);
(*file)[i] = s;
}

42
test/functional/eval/backtick_expansion_spec.lua Normal file
View File

@ -0,0 +1,42 @@
local lfs = require('lfs')
local helpers = require('test.functional.helpers')(after_each)
local clear, command, eval, eq = helpers.clear, helpers.command, helpers.eval, helpers.eq
local write_file = helpers.write_file
describe("backtick expansion", function()
setup(function()
clear()
lfs.mkdir("test-backticks")
write_file("test-backticks/file1", "test file 1")
write_file("test-backticks/file2", "test file 2")
write_file("test-backticks/file3", "test file 3")
lfs.mkdir("test-backticks/subdir")
write_file("test-backticks/subdir/file4", "test file 4")
-- Long path might cause "Press ENTER" prompt; use :silent to avoid it.
command('silent cd test-backticks')
end)
teardown(function()
helpers.rmdir('test-backticks')
end)
it("with default 'shell'", function()
if helpers.pending_win32(pending) then return end -- Need win32 shell fixes
command(":silent args `echo ***2`")
eq({ "file2", }, eval("argv()"))
command(":silent args `echo */*4`")
eq({ "subdir/file4", }, eval("argv()"))
end)
it("with shell=fish", function()
if eval("executable('fish')") == 0 then
pending('missing "fish" command')
return
end
command("set shell=fish")
command(":silent args `echo ***2`")
eq({ "file2", }, eval("argv()"))
command(":silent args `echo */*4`")
eq({ "subdir/file4", }, eval("argv()"))
end)
end)

4
test/functional/terminal/buffer_spec.lua
View File

@ -198,10 +198,6 @@ describe('terminal buffer', function()
end)
it('term_close() use-after-free #4393', function()
if eval("executable('yes')") == 0 then
pending('missing "yes" command')
return
end
execute('terminal yes')
feed([[<C-\><C-n>]])
execute('bdelete!')