121377Sdist /* 221377Sdist * Copyright (c) 1983 Regents of the University of California. 333679Sbostic * All rights reserved. 433679Sbostic * 5*42625Sbostic * %sccs.include.redist.c% 621377Sdist */ 77896Ssam 826618Sdonn #if defined(LIBC_SCCS) && !defined(lint) 9*42625Sbostic static char sccsid[] = "@(#)getnetent.c 5.7 (Berkeley) 06/01/90"; 1033679Sbostic #endif /* LIBC_SCCS and not lint */ 1121377Sdist 127896Ssam #include <stdio.h> 1312691Ssam #include <sys/types.h> 147896Ssam #include <sys/socket.h> 157896Ssam #include <netdb.h> 167896Ssam #include <ctype.h> 177896Ssam 187896Ssam #define MAXALIASES 35 197896Ssam 207896Ssam static FILE *netf = NULL; 217896Ssam static char line[BUFSIZ+1]; 227896Ssam static struct netent net; 237896Ssam static char *net_aliases[MAXALIASES]; 2428280Slepreau int _net_stayopen; 257896Ssam static char *any(); 267896Ssam 277896Ssam setnetent(f) 287896Ssam int f; 297896Ssam { 307896Ssam if (netf == NULL) 3142266Sbostic netf = fopen(_PATH_NETWORKS, "r" ); 327896Ssam else 337896Ssam rewind(netf); 3428280Slepreau _net_stayopen |= f; 357896Ssam } 367896Ssam 377896Ssam endnetent() 387896Ssam { 3928280Slepreau if (netf) { 407896Ssam fclose(netf); 417896Ssam netf = NULL; 427896Ssam } 4328280Slepreau _net_stayopen = 0; 447896Ssam } 457896Ssam 467896Ssam struct netent * 477896Ssam getnetent() 487896Ssam { 497896Ssam char *p; 507896Ssam register char *cp, **q; 517896Ssam 5242266Sbostic if (netf == NULL && (netf = fopen(_PATH_NETWORKS, "r" )) == NULL) 537896Ssam return (NULL); 547896Ssam again: 557896Ssam p = fgets(line, BUFSIZ, netf); 567896Ssam if (p == NULL) 577896Ssam return (NULL); 587896Ssam if (*p == '#') 597896Ssam goto again; 607896Ssam cp = any(p, "#\n"); 617896Ssam if (cp == NULL) 627896Ssam goto again; 637896Ssam *cp = '\0'; 647896Ssam net.n_name = p; 657896Ssam cp = any(p, " \t"); 667896Ssam if (cp == NULL) 677896Ssam goto again; 687896Ssam *cp++ = '\0'; 697896Ssam while (*cp == ' ' || *cp == '\t') 707896Ssam cp++; 717896Ssam p = any(cp, " \t"); 727896Ssam if (p != NULL) 737896Ssam *p++ = '\0'; 748364Ssam net.n_net = inet_network(cp); 758342Ssam net.n_addrtype = AF_INET; 769190Ssam q = net.n_aliases = net_aliases; 7710087Ssam if (p != NULL) 789190Ssam cp = p; 7910087Ssam while (cp && *cp) { 8010087Ssam if (*cp == ' ' || *cp == '\t') { 8110087Ssam cp++; 8210087Ssam continue; 837896Ssam } 8410087Ssam if (q < &net_aliases[MAXALIASES - 1]) 8510087Ssam *q++ = cp; 8610087Ssam cp = any(cp, " \t"); 8710087Ssam if (cp != NULL) 8810087Ssam *cp++ = '\0'; 897896Ssam } 907896Ssam *q = NULL; 917896Ssam return (&net); 927896Ssam } 937896Ssam 947896Ssam static char * 957896Ssam any(cp, match) 967896Ssam register char *cp; 977896Ssam char *match; 987896Ssam { 997896Ssam register char *mp, c; 1007896Ssam 1017896Ssam while (c = *cp) { 1027896Ssam for (mp = match; *mp; mp++) 1037896Ssam if (*mp == c) 1047896Ssam return (cp); 1057896Ssam cp++; 1067896Ssam } 1077896Ssam return ((char *)0); 1087896Ssam } 109