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* builtin: Fix echo -n early terminationHerbert Xu2016-09-02
| | | | | | | | | | | | | The commit 7a784244625d5489c0fc779201c349555dc5f8bc ("[BUILTIN] Simplify echo command") broke echo -n by making it always terminate after printing the first argument. This patch fixes this by only terminating when we have reached the end of the arguments. Fixes: 7a784244625d ("[BUILTIN] Simplify echo command") Reported-by: Luigi Tarenga <luigi.tarenga@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* builtin: Reject malformed printf specifications with digits after '*'Patrick Brown2016-06-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Dash doesn't notice when a format string has digits following a * width specifier. $ dash -c 'printf "%*0s " 1 2 && echo FAIL || echo OK' %10s FAIL $ bash -c 'printf "%*0s " 1 2 && echo FAIL || echo OK' bash: line 0: printf: `0': invalid format character OK $ mksh -c 'printf "%*0s " 1 2 && echo FAIL || echo OK' printf: %*0: invalid conversion specification OK With this patch dash complains about the malformed specifications. $ ./src/dash -c 'printf "%*0s " 1 2 && echo FAIL || echo OK' ./src/dash: 1: printf: %*0: invalid directive OK Fixes: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=779618 Originally-by: Patrick Brown <opensource@whoopdedo.org> Forwarded-by: Gioele Barabucci <gioele@svario.it> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [BUILTIN] Simplify echo commandHerbert Xu2014-10-27
| | | | Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [BUILTIN] Optimise handling of backslash octals in printfHerbert Xu2014-10-27
| | | | | | | This patch removes the duplicate octal handling for %b by reusing the existing code in conv_escape. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [BUILTIN] Use error instead of warnx for fatal errors in printfHerbert Xu2014-10-27
| | | | | | | | This patch replaces uses of warnx where we abort with error since the effect is the same. The exit status however changes from 1 to 2. Non-fatal errors where we continue are unchanged. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [BUILTIN] Remove getintmax in printfHerbert Xu2014-10-27
| | | | | | | This patch removes getintmax and moves its functionality into getuintmax in order to reduce code duplication. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [BUILTIN] Remove unnecessary restoration of format string in printfHerbert Xu2014-10-27
| | | | | | | | Currently we try to preserve the format string which is stored in argv after temporarily modifying it. This is unnecessary as it's only ever used once. This patch gets rid of it. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [BUILTIN] Handle embedded NULs correctly in printfHerbert Xu2014-10-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=379227 On Sat, Jul 22, 2006 at 12:48:38PM +0200, A Mennucc wrote: > Package: dash > Version: 0.5.3-3 > Severity: normal > > hi > > here are the examples > > $ bash -c 'echo -n -e "A\0102C\00D\0E" | hexdump -c' > 0000000 A B C \0 D \0 E > 0000007 > > $ /bin/echo -n -e "A\0102C\00D\0E" | hexdump -c > 0000000 A B C \0 D \0 E > 0000007 > > $ zsh -c 'echo -n -e "A\0102C\00D\0E" | hexdump -c' > 0000000 A B C \0 D \0 E > 0000007 > > $ dash -c 'echo -n "A\0102C\00D\0E" | hexdump -c' > 0000000 A B C > 0000003 > > and also > > $ dash -c 'echo -n "ABC\0DEFGH" | hexdump -c' > 0000000 A B C > 0000003 > > As you see, dash 's builtin echo truncates the output at the first \0 > > a. > > -- System Information: > Debian Release: testing/unstable > APT prefers unstable > APT policy: (500, 'unstable'), (500, 'testing') > Architecture: i386 (i686) > Shell: /bin/sh linked to /bin/bash > Kernel: Linux 2.6.16-1-k7 > Locale: LANG=it_IT.UTF-8, LC_CTYPE=it_IT.UTF-8 (charmap=UTF-8) > > Versions of packages dash depends on: > ii libc6 2.3.6-15 GNU C Library: Shared libraries > > dash recommends no packages. > > -- debconf information: > * dash/sh: false > > -- > Andrea Mennucc > "E' un mondo difficile. Che vita intensa!" (Tonino Carotone) This patch fixes handling of embedded NULs using an approach similar to the one taken by NetBSD. In particular, we first determine the length of the output string, and then use a sequence of Xs of the same length as input to the underlying C printf to determine the amount of leading and trailing padding. Finally we replace the Xs with the actual string before writing it out. In order to print out the temporary string containing Xs and padding, a new helper xasprintf is added. Unlike asprintf though, our xasprintf prints to the ash stack rather than using straight malloc memory. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [BUILTIN] Add printf support for format string a, A, and FHerbert Xu2014-10-27
| | | | | | | | This patch adds the format string characters a, A and F to the supported set of the built-in printf command. They're already supported by the underlying printf function. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [BUILTIN] Use PRIdMAX instead of %j in printfHarald van Dijk2013-08-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On 12/03/2012 05:59 PM, Harald van Dijk wrote: > On 12/03/2012 08:42 AM, Roy wrote: >> MSYS libc does not support %j[dXx] format, only %ll[dXx] is supported. >> >> diff --git a/src/bltin/printf.c b/src/bltin/printf.c >> index 893295c..12ce660 100644 >> --- a/src/bltin/printf.c >> +++ b/src/bltin/printf.c >> @@ -319,11 +319,12 @@ mklong(const char *str, const char *ch) >> char *copy; >> size_t len; >> >> - len = ch - str + 3; >> + len = ch - str + 4; >> STARTSTACKSTR(copy); >> copy = makestrspace(len, copy); >> - memcpy(copy, str, len - 3); >> - copy[len - 3] = 'j'; >> + memcpy(copy, str, len - 4); >> + copy[len - 4] = 'l'; >> + copy[len - 3] = 'l'; >> copy[len - 2] = *ch; >> copy[len - 1] = '\0'; >> return (copy); > > The calling code uses the result to print intmax_t and uintmax_t values. > Printing intmax_t values with %lld is wrong, this will only work if > intmax_t is really a typedef for long long (which may be true on your > system, but is not required by the standard). > > The other patch that Jonathan linked to should work just fine. Here's a slightly tweaked version of that patch. Regardless of whether PRIdMAX is defined as "jd" or as "lld", the use of memcpy here, first copying "jd"/"lld" and the null byte, and only changing the 'd' after that, surprisingly results in slightly shorter object code than the original byte-by-byte approach, even though memcpy is fully inlined. Perhaps that could be a reason for applying this, even if the original reason for it, making the code work on not-quite-conforming systems, isn't good enough to get it in dash. Tested with normal glibc, and with glibc hacked to not provide PRIdMAX. Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [BUILTIN] Eliminate unnecessary promotion in echocmdHerbert Xu2011-07-07
| | | | | | | | The patch to make outc into an inline function created an unnecessary promotion in echocmd due to its use of char vs. the int used by outc. This patch changes echocmd to use int instead. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [BUILTIN] Fix \c spillage across echo commandsHerbert Xu2005-11-14
| | | | | | | | | | | | | | | | | | | | | On Thu, Nov 03, 2005 at 07:16:53PM +0100, Mike Hommey wrote: > Here is a simple test case: > > #!/bin/dash > echo test\\ test > echo '\c' > echo test\\ test > > it outputs: > test\ test > test\ > > This is due to mis-usage of a global variable. See attached patch for a > fix. Instead of setting rval when \c is detected, this is now set in the return value of conv_escape_str. This prevents the spillage reported in http://bugs.debian.org/337294.
* [BUILTIN] Always call conv_escape_str in echocmdHerbert Xu2005-11-13
| | | | | Instead of calling conv_escape_str when we detect a backslash we will call it unconditionally. This helps get rid of some unnecessary code in echocmd.
* [BUILTIN] Removed standalone/csh support from printfHerbert Xu2005-10-29
| | | | | The support for standalone/csh printf only serves to complicate maintainence.
* Copyright/licence updates and remove all traces of sys/cdefs.hHerbert Xu2005-10-29
| | | | | | | | | | | This change updates the BSD licence to the three-clause version since NetBSD has already done so. This makes dash GPL-compatible. It also adds Christos Zoulas (NetBSD ash maintainer) to the COPYING file. I've added "copyright by Herbert Xu" to most files. Finally all CVS IDs and inclusion of sys/cdefs.h have been removed. The latter is needed for support of klibc.
* Initial import.Herbert Xu2005-09-26