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      1 /*
      2  * $Id: clientid.c,v 1.1 2004/11/14 07:26:26 paulus Exp $
      3  *
      4  * Copyright (C) 1995,1996,1997 Lars Fenneberg
      5  *
      6  * See the file COPYRIGHT for the respective terms and conditions.
      7  * If the file is missing contact me at lf (at) elemental.net
      8  * and I'll send you a copy.
      9  *
     10  */
     11 
     12 #include <includes.h>
     13 #include <radiusclient.h>
     14 
     15 struct map2id_s {
     16 	char *name;
     17 	UINT4 id;
     18 
     19 	struct map2id_s *next;
     20 };
     21 
     22 static struct map2id_s *map2id_list = NULL;
     23 
     24 /*
     25  * Function: rc_read_mapfile
     26  *
     27  * Purpose: Read in the ttyname to port id map file
     28  *
     29  * Arguments: the file name of the map file
     30  *
     31  * Returns: zero on success, negative integer on failure
     32  */
     33 
     34 int rc_read_mapfile(char *filename)
     35 {
     36 	char buffer[1024];
     37 	FILE *mapfd;
     38 	char *c, *name, *id, *q;
     39 	struct map2id_s *p;
     40 	int lnr = 0;
     41 
     42 	if ((mapfd = fopen(filename,"r")) == NULL)
     43 	{
     44 		error("rc_read_mapfile: can't read %s: %s", filename, strerror(errno));
     45 		return (-1);
     46 	}
     47 
     48 #define SKIP(p) while(*p && isspace(*p)) p++;
     49 
     50 	while (fgets(buffer, sizeof(buffer), mapfd) != NULL)
     51 	{
     52 		lnr++;
     53 
     54 		q = buffer;
     55 
     56 		SKIP(q);
     57 
     58 		if ((*q == '\n') || (*q == '#') || (*q == '\0'))
     59 			continue;
     60 
     61 		if (( c = strchr(q, ' ')) || (c = strchr(q,'\t'))) {
     62 
     63 			*c = '\0'; c++;
     64 			SKIP(c);
     65 
     66 			name = q;
     67 			id = c;
     68 
     69 			if ((p = (struct map2id_s *)malloc(sizeof(*p))) == NULL) {
     70 				novm("rc_read_mapfile");
     71 				return (-1);
     72 			}
     73 
     74 			p->name = strdup(name);
     75 			p->id = atoi(id);
     76 			p->next = map2id_list;
     77 			map2id_list = p;
     78 
     79 		} else {
     80 
     81 			error("rc_read_mapfile: malformed line in %s, line %d", filename, lnr);
     82 			return (-1);
     83 
     84 		}
     85 	}
     86 
     87 #undef SKIP
     88 
     89 	fclose(mapfd);
     90 
     91 	return 0;
     92 }
     93 
     94 /*
     95  * Function: rc_map2id
     96  *
     97  * Purpose: Map ttyname to port id
     98  *
     99  * Arguments: full pathname of the tty
    100  *
    101  * Returns: port id, zero if no entry found
    102  */
    103 
    104 UINT4 rc_map2id(char *name)
    105 {
    106 	struct map2id_s *p;
    107 	char ttyname[PATH_MAX];
    108 
    109 	*ttyname = '\0';
    110 	if (*name != '/')
    111 		strcpy(ttyname, "/dev/");
    112 
    113 	strncat(ttyname, name, sizeof(ttyname));
    114 
    115 	for(p = map2id_list; p; p = p->next)
    116 		if (!strcmp(ttyname, p->name)) return p->id;
    117 
    118 	warn("rc_map2id: can't find tty %s in map database", ttyname);
    119 
    120 	return 0;
    121 }
    122