David Whedon
23 years ago
6 changed files with 384 additions and 96 deletions
@ -1,13 +1,9 @@ |
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* menutest : check for existance and size, of conf files (any other checks?) |
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* search for network interfaces and allow the user to choose which one they want to configure |
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* put in checks so the user can't enter data that is clearly invalid (perhaps this will be done through debconf. |
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* dhcp: either another module, or in here |
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* fall back to safe defaults if the user doesn't enter a particular value (ex. gateway) |
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* create config dirs if they don't exist |
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* do other sorts of network configurations (pcmcia) |
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* inderstand the target_path() thing, and do it properly |
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* what do we do differently if it is a CD filesystem? |
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* make sure the gateway (if any) is reachable (i.e. is on the system's network) |
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* clear any DNS entries the user doesn't enter |
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* fix the strtok() DNS clumsyness |
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* decide what numbers you will actually present the user with for confirmation (you have overkill now) |
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* fix the note about what the user should do if we don't find any network interfaces. Since I don't now know what the flow of the installer is going to be I can't suggest what they should do, I've got the test in there from the old installer now. |
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* currently we get an internal error if the user has lots of network interfaces, find a better way of handling that. |
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@ -0,0 +1,170 @@ |
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/*
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* file: util.c |
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* These functions were taken mostly untouched from dbootstrap |
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* |
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* */ |
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#include <unistd.h> |
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#include <ctype.h> |
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#include <string.h> |
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#include <net/if.h> |
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#include <sys/types.h> |
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#include <sys/socket.h> |
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#include <sys/ioctl.h> |
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#include <stdio.h> |
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#include "util.h" |
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int |
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is_interface_up (char *inter) |
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{ |
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struct ifreq ifr; |
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int sfd = -1, ret = -1; |
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if ((sfd = socket (AF_INET, SOCK_DGRAM, 0)) == -1) |
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goto int_up_done; |
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strncpy (ifr.ifr_name, inter, sizeof (ifr.ifr_name)); |
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if (ioctl (sfd, SIOCGIFFLAGS, &ifr) < 0) |
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goto int_up_done; |
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ret = (ifr.ifr_flags & IFF_UP) ? 1 : 0; |
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int_up_done: |
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if (sfd != -1) |
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close (sfd); |
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return ret; |
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} |
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|
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static FILE *ifs = NULL; |
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static char ibuf[512]; |
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void |
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getif_start (void) |
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{ |
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if (ifs != NULL) |
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{ |
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fclose (ifs); |
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ifs = NULL; |
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} |
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if ((ifs = fopen ("/proc/net/dev", "r")) != NULL) |
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{ |
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fgets (ibuf, sizeof (ibuf), ifs); /* eat header */ |
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fgets (ibuf, sizeof (ibuf), ifs); /* ditto */ |
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} |
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return; |
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} |
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|
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void |
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getif_end (void) |
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{ |
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if (ifs != NULL) |
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{ |
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fclose (ifs); |
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ifs = NULL; |
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} |
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return; |
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} |
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char * |
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getif (int all) |
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{ |
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char rbuf[512]; |
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if (ifs == NULL) |
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return NULL; |
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if (fgets (rbuf, sizeof (rbuf), ifs) != NULL) |
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{ |
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get_name (ibuf, rbuf); |
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if (!strcmp (ibuf, "lo")) /* ignore the loopback */ |
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return getif (all); /* seriously doubt there is an infinite number of lo devices */ |
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if (all || is_interface_up (ibuf) == 1) |
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return ibuf; |
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} |
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return NULL; |
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} |
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void |
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get_name (char *name, char *p) |
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{ |
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while (isspace (*p)) |
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p++; |
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while (*p) |
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{ |
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if (isspace (*p)) |
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break; |
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if (*p == ':') |
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{ /* could be an alias */ |
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char *dot = p, *dotname = name; |
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*name++ = *p++; |
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while (isdigit (*p)) |
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*name++ = *p++; |
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if (*p != ':') |
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{ /* it wasn't, backup */ |
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p = dot; |
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name = dotname; |
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} |
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if (*p == '\0') |
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return; |
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p++; |
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break; |
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} |
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*name++ = *p++; |
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} |
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*name++ = '\0'; |
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return; |
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} |
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/*
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* Get a description for an interface (i.e. "Ethernet" for ethX). |
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*/ |
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char * |
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get_ifdsc (const char *ifp) |
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{ |
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int i; |
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struct if_alist_struct |
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{ |
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char *interface; |
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char *description; |
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} |
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interface_alist[] = |
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{ |
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/*
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* A _("string") is an element of a char *[], and the linker will |
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* know where to find the elements. This works with `pointerize'; |
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* perhaps that's different with `gettext'... though if it expands |
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* to a function call, this initializer should still work fine. |
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* Also see the 1.66 version of choose_cdrom(), which uses the |
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* similar technique. If it works there, it will work here. |
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*/ |
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{ |
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"eth", "Ethernet or Fast Ethernet"} |
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, |
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{ |
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"pcmcia", "PC-Card (PCMCIA) Ethernet or Token Ring"} |
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, |
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{ |
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"tr", "Token Ring"} |
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, |
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{ |
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"arc", "Arcnet"} |
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, |
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{ |
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"slip", "Serial-line IP"} |
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, |
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{ |
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"plip", "Parallel-line IP"} |
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, |
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{ |
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NULL, NULL} |
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}; |
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for (i = 0; interface_alist[i].interface != NULL; i++) |
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if (!strncmp (ifp, interface_alist[i].interface, |
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strlen (interface_alist[i].interface))) |
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return interface_alist[i].description; |
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return NULL; |
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} |
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@ -0,0 +1,39 @@ |
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#ifndef __UTIL_H |
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#define __UTIL_H |
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#define MAXLINE 1024 |
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/*
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* Get a description for an interface (i.e. "Ethernet" for ethX). |
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*/ |
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extern char *get_ifdsc (const char *ifp); |
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/* Checks to see if any network interfaces are active (excepting the
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* loopback interface "lo" - Returns the number of active interfaces. If |
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* all is non-zero, all interfaces are counted, even if not up */ |
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int is_network_up (int all); |
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/* Checks to see if the named interface, "inter", is up - Returns 1 if it
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* is, 0 if it is down. -1 is returned if the interface does not exist. */ |
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int is_interface_up (char *inter); |
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/* Takes the buffer "p" and reads the interface name from it. "p" must be
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* a full line read in from /proc/net/dev. The interface name is places |
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* into the "name" buffer (which must already be allocated) */ |
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void get_name (char *name, char *p); |
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/* Get listing of interfaces on the system. getif_start() must be called
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* first in order to initialize the setup. After which, each successive |
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* call get getif() will return a pointer to the next interface, ending |
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* with NULL, when no more interfaces are available. If you call getif and |
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* all is non-zero, it will return all interfaces, even ones that are not |
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* active. Finally when done, call getif_end(). |
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*/ |
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void getif_start (void); |
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char *getif (int all); |
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void getif_end (void); |
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#endif /* __UTIL_H */ |
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