diff options
author | Damien Miller <djm@mindrot.org> | 2005-05-26 20:48:25 +1000 |
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committer | Damien Miller <djm@mindrot.org> | 2005-05-26 20:48:25 +1000 |
commit | de3cb0a3dc1bd98762afa3d71f3ffcdb76029fad (patch) | |
tree | 8c0729f879a4458a36ef691480c553382ac2775a /openbsd-compat/strtonum.c | |
parent | 84ce9b455d04e7f145d43ef8dac2ddc59e41802d (diff) | |
download | openssh-git-de3cb0a3dc1bd98762afa3d71f3ffcdb76029fad.tar.gz |
- (djm) [configure.ac openbsd-compat/Makefile.in]
[openbsd-compat/openbsd-compat.h openbsd-compat/strtonum.c]
Add strtonum(3) from OpenBSD libc, new code needs it.
Unfortunately Linux forces us to do a bizarre dance with compiler
options to get LLONG_MIN/MAX; Spotted by and ok dtucker@
Diffstat (limited to 'openbsd-compat/strtonum.c')
-rw-r--r-- | openbsd-compat/strtonum.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/openbsd-compat/strtonum.c b/openbsd-compat/strtonum.c new file mode 100644 index 00000000..b681ed83 --- /dev/null +++ b/openbsd-compat/strtonum.c @@ -0,0 +1,69 @@ +/* OPENBSD ORIGINAL: lib/libc/stdlib/strtonum.c */ + +/* $OpenBSD: strtonum.c,v 1.6 2004/08/03 19:38:01 millert Exp $ */ + +/* + * Copyright (c) 2004 Ted Unangst and Todd Miller + * All rights reserved. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include "includes.h" +#ifndef HAVE_STRTONUM +#include <limits.h> + +#define INVALID 1 +#define TOOSMALL 2 +#define TOOLARGE 3 + +long long +strtonum(const char *numstr, long long minval, long long maxval, + const char **errstrp) +{ + long long ll = 0; + char *ep; + int error = 0; + struct errval { + const char *errstr; + int err; + } ev[4] = { + { NULL, 0 }, + { "invalid", EINVAL }, + { "too small", ERANGE }, + { "too large", ERANGE }, + }; + + ev[0].err = errno; + errno = 0; + if (minval > maxval) + error = INVALID; + else { + ll = strtoll(numstr, &ep, 10); + if (numstr == ep || *ep != '\0') + error = INVALID; + else if ((ll == LLONG_MIN && errno == ERANGE) || ll < minval) + error = TOOSMALL; + else if ((ll == LLONG_MAX && errno == ERANGE) || ll > maxval) + error = TOOLARGE; + } + if (errstrp != NULL) + *errstrp = ev[error].errstr; + errno = ev[error].err; + if (error) + ll = 0; + + return (ll); +} + +#endif /* HAVE_STRTONUM */ |