diff options
Diffstat (limited to 'inet/getprtent.c')
| -rw-r--r-- | inet/getprtent.c | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/inet/getprtent.c b/inet/getprtent.c new file mode 100644 index 0000000000..c10ae330e4 --- /dev/null +++ b/inet/getprtent.c @@ -0,0 +1,119 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. 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 University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)getprotoent.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ + +#include <sys/types.h> +#include <sys/socket.h> +#include <netdb.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#define MAXALIASES 35 + +static FILE *protof = NULL; +static char line[BUFSIZ+1]; +static struct protoent proto; +static char *proto_aliases[MAXALIASES]; +int _proto_stayopen; + +void +setprotoent(f) + int f; +{ + if (protof == NULL) + protof = fopen(_PATH_PROTOCOLS, "r" ); + else + rewind(protof); + _proto_stayopen |= f; +} + +void +endprotoent() +{ + if (protof) { + fclose(protof); + protof = NULL; + } + _proto_stayopen = 0; +} + +struct protoent * +getprotoent() +{ + char *p; + register char *cp, **q; + + if (protof == NULL && (protof = fopen(_PATH_PROTOCOLS, "r" )) == NULL) + return (NULL); +again: + if ((p = fgets(line, BUFSIZ, protof)) == NULL) + return (NULL); + if (*p == '#') + goto again; + cp = strpbrk(p, "#\n"); + if (cp == NULL) + goto again; + *cp = '\0'; + proto.p_name = p; + cp = strpbrk(p, " \t"); + if (cp == NULL) + goto again; + *cp++ = '\0'; + while (*cp == ' ' || *cp == '\t') + cp++; + p = strpbrk(cp, " \t"); + if (p != NULL) + *p++ = '\0'; + proto.p_proto = atoi(cp); + q = proto.p_aliases = proto_aliases; + if (p != NULL) { + cp = p; + while (cp && *cp) { + if (*cp == ' ' || *cp == '\t') { + cp++; + continue; + } + if (q < &proto_aliases[MAXALIASES - 1]) + *q++ = cp; + cp = strpbrk(cp, " \t"); + if (cp != NULL) + *cp++ = '\0'; + } + } + *q = NULL; + return (&proto); +} |