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author | markm <markm@FreeBSD.org> | 1997-09-04 06:04:33 +0000 |
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committer | markm <markm@FreeBSD.org> | 1997-09-04 06:04:33 +0000 |
commit | a8a89cfaf983bc64f4b42f7c35209a5a36dd0fe8 (patch) | |
tree | 0b84977f19022a965f8c6145f067f951173f6290 /crypto/kerberosIV/lib/krb/k_concat.c | |
download | FreeBSD-src-a8a89cfaf983bc64f4b42f7c35209a5a36dd0fe8.zip FreeBSD-src-a8a89cfaf983bc64f4b42f7c35209a5a36dd0fe8.tar.gz |
Initial import of KTH eBones. This has been cleaned up to only include
the "core" Kerberos functionality. The rest of the userland will get their
own changes later.
Diffstat (limited to 'crypto/kerberosIV/lib/krb/k_concat.c')
-rw-r--r-- | crypto/kerberosIV/lib/krb/k_concat.c | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/crypto/kerberosIV/lib/krb/k_concat.c b/crypto/kerberosIV/lib/krb/k_concat.c new file mode 100644 index 0000000..e7daa5f --- /dev/null +++ b/crypto/kerberosIV/lib/krb/k_concat.c @@ -0,0 +1,116 @@ +/* + * Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the Kungliga Tekniska + * Högskolan and its contributors. + * + * 4. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include "krb_locl.h" + +RCSID("$Id: k_concat.c,v 1.5 1997/05/02 08:56:39 joda Exp $"); + +int +k_concat (char *s, size_t len, ...) +{ + int ret; + va_list args; + + va_start(args, len); + ret = k_vconcat (s, len, args); + va_end(args); + return ret; +} + +int +k_vconcat (char *s, size_t len, va_list args) +{ + const char *a; + + while ((a = va_arg(args, const char*))) { + size_t n = strlen (a); + + if (n >= len) + return -1; + strncpy (s, a, n); + s += n; + len -= n; + } + *s = '\0'; + return 0; +} + +size_t +k_vmconcat (char **s, size_t max_len, va_list args) +{ + const char *a; + char *p, *q; + size_t len = 0; + *s = NULL; + p = malloc(1); + if(p == NULL) + return 0; + *p = 0; + len = 1; + while ((a = va_arg(args, const char*))) { + size_t n = strlen (a); + + if(max_len && len + n > max_len){ + free(p); + return 0; + } + q = realloc(p, len + n); + if(q == NULL){ + free(p); + return 0; + } + p = q; + len += n; + strcat(p, a); + } + *s = p; + return len; +} + +size_t +k_mconcat (char **s, size_t max_len, ...) +{ + int ret; + va_list args; + + va_start(args, max_len); + ret = k_vmconcat (s, max_len, args); + va_end(args); + return ret; +} + |