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v1.60
lib/af.c
345 строк
6 KB
Phil Blundell
Add X.25 support.
20 май 2000, 17:38
20 май 2000, 17:38
481de74
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/* * lib/af.c This file contains the top-level part of the protocol * support functions module for the NET-2 base distribution. * * Version: $Id: af.c,v 1.13 2000/05/20 13:38:10 pb Exp $ * * Author: Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org> * Copyright 1993 MicroWalt Corporation * * This program is free software; you can redistribute it * and/or modify it under the terms of the GNU General * Public License as published by the Free Software * Foundation; either version 2 of the License, or (at * your option) any later version. */ #include <sys/types.h> #include <sys/socket.h> #include <stdlib.h> #include <stdio.h> #include <errno.h> #include <ctype.h> #include <string.h> #include <unistd.h> #include "config.h" #include "net-support.h" #include "pathnames.h" #include "intl.h" #include "util.h" int flag_unx; int flag_ipx; int flag_ax25; int flag_ddp; int flag_netrom; int flag_inet; int flag_inet6; int flag_econet; int flag_x25 = 0; int flag_ash; struct aftrans_t { char *alias; char *name; int *flag; } aftrans[] = { { "ax25", "ax25", &flag_ax25 }, { "ip", "inet", &flag_inet }, { "ip6", "inet6", &flag_inet6 }, { "ipx", "ipx", &flag_ipx }, { "appletalk", "ddp", &flag_ddp }, { "netrom", "netrom", &flag_netrom }, { "inet", "inet", &flag_inet }, { "inet6", "inet6", &flag_inet6 }, { "ddp", "ddp", &flag_ddp }, { "unix", "unix", &flag_unx }, { "tcpip", "inet", &flag_inet }, { "econet", "ec", &flag_econet }, { "x25", "x25", &flag_x25 }, { "ash", "ash", &flag_ash }, { 0, 0, 0 } }; char afname[256] = ""; extern struct aftype unspec_aftype; extern struct aftype unix_aftype; extern struct aftype inet_aftype; extern struct aftype inet6_aftype; extern struct aftype ax25_aftype; extern struct aftype netrom_aftype; extern struct aftype ipx_aftype; extern struct aftype ddp_aftype; extern struct aftype ec_aftype; extern struct aftype x25_aftype; extern struct aftype rose_aftype; extern struct aftype ash_aftype; static short sVafinit = 0; struct aftype *aftypes[] = { #if HAVE_AFUNIX &unix_aftype, #endif #if HAVE_AFINET &inet_aftype, #endif #if HAVE_AFINET6 &inet6_aftype, #endif #if HAVE_AFAX25 &ax25_aftype, #endif #if HAVE_AFNETROM &netrom_aftype, #endif #if HAVE_AFROSE &rose_aftype, #endif #if HAVE_AFIPX &ipx_aftype, #endif #if HAVE_AFATALK &ddp_aftype, #endif #if HAVE_AFECONET &ec_aftype, #endif #if HAVE_AFASH &ash_aftype, #endif #if HAVE_AFX25 &x25_aftype, #endif &unspec_aftype, NULL }; void afinit() { unspec_aftype.title = _("UNSPEC"); #if HAVE_AFUNIX unix_aftype.title = _("UNIX Domain"); #endif #if HAVE_AFINET inet_aftype.title = _("DARPA Internet"); #endif #if HAVE_AFINET6 inet6_aftype.title = _("IPv6"); #endif #if HAVE_AFAX25 ax25_aftype.title = _("AMPR AX.25"); #endif #if HAVE_AFNETROM netrom_aftype.title = _("AMPR NET/ROM"); #endif #if HAVE_AFIPX ipx_aftype.title = _("Novell IPX"); #endif #if HAVE_AFATALK ddp_aftype.title = _("Appletalk DDP"); #endif #if HAVE_AFECONET ec_aftype.title = _("Econet"); #endif #if HAVE_AFX25 x25_aftype.title = _("CCITT X.25"); #endif #if HAVE_AFROSE rose_aftype.title = _("AMPR ROSE"); #endif #if HAVE_AFASH ash_aftype.title = _("Ash"); #endif sVafinit = 1; } /* set the default AF list from the program name or a constant value */ void aftrans_def(char *tool, char *argv0, char *dflt) { char *tmp; char *buf; strcpy(afname, dflt); if (!(tmp = strrchr(argv0, '/'))) tmp = argv0; /* no slash?! */ else tmp++; if (!(buf = strdup(tmp))) return; if (strlen(tool) >= strlen(tmp)) { free(buf); return; } tmp = buf + (strlen(tmp) - strlen(tool)); if (strcmp(tmp, tool) != 0) { free(buf); return; } *tmp = '\0'; if ((tmp = strchr(buf, '_'))) *tmp = '\0'; afname[0] = '\0'; if (aftrans_opt(buf)) strcpy(afname, buf); free(buf); } /* Check our protocol family table for this family. */ struct aftype *get_aftype(const char *name) { struct aftype **afp; if (!sVafinit) afinit(); afp = aftypes; while (*afp != NULL) { if (!strcmp((*afp)->name, name)) return (*afp); afp++; } if (index(name, ',')) fprintf(stderr, _("Please don't supply more than one address family.\n")); return (NULL); } /* Check our protocol family table for this family. */ struct aftype *get_afntype(int af) { struct aftype **afp; if (!sVafinit) afinit(); afp = aftypes; while (*afp != NULL) { if ((*afp)->af == af) return (*afp); afp++; } return (NULL); } /* Check our protocol family table for this family and return its socket */ int get_socket_for_af(int af) { struct aftype **afp; if (!sVafinit) afinit(); afp = aftypes; while (*afp != NULL) { if ((*afp)->af == af) return (*afp)->fd; afp++; } return -1; } int aftrans_opt(const char *arg) { struct aftrans_t *paft; char *tmp1, *tmp2; char buf[256]; safe_strncpy(buf, arg, sizeof(buf)); tmp1 = buf; while (tmp1) { tmp2 = index(tmp1, ','); if (tmp2) *(tmp2++) = '\0'; paft = aftrans; for (paft = aftrans; paft->alias; paft++) { if (strcmp(tmp1, paft->alias)) continue; if (strlen(paft->name) + strlen(afname) + 1 >= sizeof(afname)) { fprintf(stderr, _("Too much address family arguments.\n")); return (0); } if (paft->flag) (*paft->flag)++; if (afname[0]) strcat(afname, ","); strcat(afname, paft->name); break; } if (!paft->alias) { fprintf(stderr, _("Unknown address family `%s'.\n"), tmp1); return (1); } tmp1 = tmp2; } return (0); } /* type: 0=all, 1=getroute */ void print_aflist(int type) { int count = 0; char * txt; struct aftype **afp; if (!sVafinit) afinit(); afp = aftypes; while (*afp != NULL) { if ((type == 1 && ((*afp)->rprint == NULL)) || ((*afp)->af == 0)) { afp++; continue; } if ((count % 3) == 0) fprintf(stderr,count?"\n ":" "); txt = (*afp)->name; if (!txt) txt = ".."; fprintf(stderr,"%s (%s) ",txt,(*afp)->title); count++; afp++; } fprintf(stderr,"\n"); }