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Diffstat (limited to 'nss/getent.c')
| -rw-r--r-- | nss/getent.c | 511 |
1 files changed, 511 insertions, 0 deletions
diff --git a/nss/getent.c b/nss/getent.c new file mode 100644 index 0000000..027ffa2 --- /dev/null +++ b/nss/getent.c @@ -0,0 +1,511 @@ +/* Copyright (c) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1998. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +/* getent: get entries from administrative database + supported databases: passwd, group, hosts, services, protocols + and networks */ + +#include <argp.h> +#include <grp.h> +#include <pwd.h> +#include <ctype.h> +#include <error.h> +#include <libintl.h> +#include <locale.h> +#include <netdb.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> + +/* Get libc version number. */ +#include <version.h> + +#define PACKAGE _libc_intl_domainname + +/* Name and version of program. */ +static void print_version (FILE *stream, struct argp_state *state); +void (*argp_program_version_hook) (FILE *, struct argp_state *) = print_version; + +/* Short description of parameters. */ +static const char args_doc[] = N_("database [key ...]"); + +/* Short description of program. */ +static const char doc[] = + N_("getent - get entries from administrative database."); + +/* Data structure to communicate with argp functions. */ +static struct argp argp = { + NULL, NULL, args_doc, doc, +}; + +/* Print the version information. */ +static void +print_version (FILE *stream, struct argp_state *state) +{ + fprintf (stream, "getent (GNU %s) %s\n", PACKAGE, VERSION); + fprintf (stream, gettext ("\ +Copyright (C) %s Free Software Foundation, Inc.\n\ +This is free software; see the source for copying conditions. There is NO\n\ +warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\ +"), "1998"); + fprintf (stream, gettext ("Written by %s.\n"), "Thorsten Kukuk"); +} + +/* This is for group */ +static inline void +print_group (struct group *grp) +{ + unsigned int i = 0; + + printf ("%s:%s:%ld:", grp->gr_name ? grp->gr_name : "", + grp->gr_passwd ? grp->gr_passwd : "", + (unsigned long)grp->gr_gid); + + while (grp->gr_mem[i] != NULL) + { + fputs (grp->gr_mem[i], stdout); + ++i; + if (grp->gr_mem[i] != NULL) + fputs (",", stdout); + } + fputs ("\n", stdout); +} + +static inline int +group_keys (int number, char *key[]) +{ + int result = 0; + int i; + + for (i = 0; i < number; ++i) + { + struct group *grp; + + if (isdigit (key[i][0])) + grp = getgrgid (atol (key[i])); + else + grp = getgrnam (key[i]); + + if (grp == NULL) + result = 2; + else + print_group (grp); + } + + return result; +} + +/* This is for networks */ +static inline void +print_networks (struct netent *net) +{ + unsigned int i; + struct in_addr ip; + ip.s_addr = htonl (net->n_net); + + fputs (net->n_name, stdout); + for (i = strlen (net->n_name); i < 22; ++i) + fputs (" ", stdout); + fputs (inet_ntoa (ip), stdout); + + i = 0; + while (net->n_aliases[i] != NULL) + { + fputs (" ", stdout); + fputs (net->n_aliases[i], stdout); + ++i; + if (net->n_aliases[i] != NULL) + fputs (",", stdout); + } + fputs ("\n", stdout); +} + +static inline int +networks_keys (int number, char *key[]) +{ + int result = 0; + int i; + + for (i = 0; i < number; ++i) + { + struct netent *net; + + if (isdigit (key[i][0])) + net = getnetbyaddr (inet_addr (key[i]), AF_UNIX); + else + net = getnetbyname (key[i]); + + if (net == NULL) + result = 2; + else + print_networks (net); + } + + return result; +} + +/* Now is all for passwd */ +static inline void +print_passwd (struct passwd *pwd) +{ + printf ("%s:%s:%ld:%ld:%s:%s:%s\n", + pwd->pw_name ? pwd->pw_name : "", + pwd->pw_passwd ? pwd->pw_passwd : "", + (unsigned long)pwd->pw_uid, + (unsigned long)pwd->pw_gid, + pwd->pw_gecos ? pwd->pw_gecos : "", + pwd->pw_dir ? pwd->pw_dir : "", + pwd->pw_shell ? pwd->pw_shell : ""); +} + +static inline int +passwd_keys (int number, char *key[]) +{ + int result = 0; + int i; + + for (i = 0; i < number; ++i) + { + struct passwd *pwd; + + if (isdigit (key[i][0])) + pwd = getpwuid (atol (key[i])); + else + pwd = getpwnam (key[i]); + + if (pwd == NULL) + result = 2; + else + print_passwd (pwd); + } + + return result; +} + +/* This is for protocols */ +static inline void +print_protocols (struct protoent *proto) +{ + unsigned int i; + + fputs (proto->p_name, stdout); + for (i = strlen (proto->p_name); i < 22; ++i) + fputs (" ", stdout); + printf ("%d", proto->p_proto); + + i = 0; + while (proto->p_aliases[i] != NULL) + { + fputs (" ", stdout); + fputs (proto->p_aliases[i], stdout); + ++i; + } + fputs ("\n", stdout); +} + +static inline int +protocols_keys (int number, char *key[]) +{ + int result = 0; + int i; + + for (i = 0; i < number; ++i) + { + struct protoent *proto; + + if (isdigit (key[i][0])) + proto = getprotobynumber (atol (key[i])); + else + proto = getprotobyname (key[i]); + + if (proto == NULL) + result = 2; + else + print_protocols (proto); + } + + return result; +} + +/* This is for hosts */ +static inline void +print_hosts (struct hostent *host) +{ + unsigned int i; + char *ip = inet_ntoa(* (struct in_addr *) host->h_addr_list[0]); + + fputs (ip, stdout); + for (i = strlen (ip); i < 16; ++i) + fputs (" ", stdout); + fputs (host->h_name, stdout); + + i = 0; + while (host->h_aliases[i] != NULL) + { + fputs (" ", stdout); + fputs (host->h_aliases[i], stdout); + ++i; + } + fputs ("\n", stdout); +} + +static inline int +hosts_keys (int number, char *key[]) +{ + int result = 0; + int i; + + for (i = 0; i < number; ++i) + { + struct hostent *host; + + if (isdigit (key[i][0])) + { + struct in_addr addr; + addr.s_addr = inet_addr (key[i]); + + host = gethostbyaddr ((char *)&addr, sizeof (struct in_addr), + AF_INET); + } + else + host = gethostbyname (key[i]); + + if (host == NULL) + result = 2; + else + print_hosts (host); + } + + return result; +} + +/* for services */ +static inline void +print_services (struct servent *serv) +{ + unsigned int i; + + fputs (serv->s_name, stdout); + for (i = strlen (serv->s_name); i < 22; ++i) + fputs (" ", stdout); + printf ("%d/%s", ntohs (serv->s_port), serv->s_proto); + + i = 0; + while (serv->s_aliases[i] != NULL) + { + fputs (" ", stdout); + fputs (serv->s_aliases[i], stdout); + ++i; + } + fputs ("\n", stdout); +} + +static inline int +services_keys (int number, char *key[]) +{ + int result = 0; + int i; + + for (i = 0; i < number; ++i) + { + struct servent *serv; + char *proto = strchr (key[i], '/'); + + if (proto == NULL) + { + setservent (0); + if (isdigit (key[i][0])) + { + int port = htons (atol (key[i])); + while ((serv = getservent ()) != NULL) + if (serv->s_port == port) + { + print_services (serv); + break; + } + } + else + { + while ((serv = getservent ()) != NULL) + if (strcmp (serv->s_name, key[i]) == 0) + { + print_services (serv); + break; + } + } + endservent (); + } + else + { + *proto++ = '\0'; + + if (isdigit (key[i][0])) + serv = getservbyport (atol (key[i]), proto); + else + serv = getservbyname (key[i], proto); + + if (serv == NULL) + result = 2; + else + print_services (serv); + } + } + + return result; +} + +/* the main function */ +int +main (int argc, char *argv[]) +{ + int remaining; + + /* Set locale via LC_ALL. */ + setlocale (LC_ALL, ""); + /* Set the text message domain. */ + textdomain (PACKAGE); + + /* Parse and process arguments. */ + argp_parse (&argp, argc, argv, 0, &remaining, NULL); + + if ((argc - remaining) < 1) + { + error (0, 0, gettext ("wrong number of arguments")); + argp_help (&argp, stdout, ARGP_HELP_SEE, program_invocation_short_name); + return 1; + } + + switch(argv[1][0]) + { + case 'g': /* group */ + if (strcmp (argv[1], "group") == 0) + { + if (argc == 2) + { + struct group *grp; + + setgrent (); + while ((grp = getgrent()) != NULL) + print_group (grp); + endgrent (); + } + else + return group_keys (argc - 2, &argv[2]); + } + else + goto error; + break; + case 'h': /* hosts */ + if (strcmp (argv[1], "hosts") == 0) + { + if (argc == 2) + { + struct hostent *host; + + sethostent (0); + while ((host = gethostent()) != NULL) + print_hosts (host); + endhostent (); + } + else + return hosts_keys (argc - 2, &argv[2]); + } + else + goto error; + break; + case 'n': /* networks */ + if (strcmp (argv[1], "networks") == 0) + { + if (argc == 2) + { + struct netent *net; + + setnetent (0); + while ((net = getnetent()) != NULL) + print_networks (net); + endnetent (); + } + else + return networks_keys (argc - 2, &argv[2]); + } + else + goto error; + break; + case 'p': /* passwd, protocols */ + if (strcmp (argv[1], "passwd") == 0) + { + if (argc == 2) + { + struct passwd *pwd; + + setpwent (); + while ((pwd = getpwent()) != NULL) + print_passwd (pwd); + endpwent (); + } + else + return passwd_keys (argc - 2, &argv[2]); + } + else if (strcmp (argv[1], "protocols") == 0) + { + if (argc == 2) + { + struct protoent *proto; + + setprotoent (0); + while ((proto = getprotoent()) != NULL) + print_protocols (proto); + endprotoent (); + } + else + return protocols_keys (argc - 2, &argv[2]); + } + else + goto error; + break; + case 's': /* services */ + if (strcmp (argv[1], "services") == 0) + { + if (argc == 2) + { + struct servent *serv; + + setservent (0); + while ((serv = getservent()) != NULL) + print_services (serv); + endservent (); + } + else + return services_keys (argc - 2, &argv[2]); + } + else + goto error; + break; + default: + error: + fprintf (stderr, _("Unknown database: %s\n"), argv[1]); + argp_help (&argp, stdout, ARGP_HELP_SEE, program_invocation_short_name); + return 1; + } + + return 0; +} |