pppd/plugins/radius/radiusclient/lib/clientid.c

   1 /*
   2  * $Id: clientid.c,v 1.2 2002/02/27 15:51:20 dfs 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@elemental.net
   8  * and I'll send you a copy.
   9  *
  10  */
  11
  12 #include <config.h>
  13 #include <includes.h>
  14 #include <radiusclient.h>
  15
  16 struct map2id_s {
  17         char *name;
  18         UINT4 id;
  19
  20         struct map2id_s *next;
  21 };
  22
  23 static struct map2id_s *map2id_list = NULL;
  24
  25 /*
  26  * Function: rc_read_mapfile
  27  *
  28  * Purpose: Read in the ttyname to port id map file
  29  *
  30  * Arguments: the file name of the map file
  31  *
  32  * Returns: zero on success, negative integer on failure
  33  */
  34
  35 int rc_read_mapfile(char *filename)
  36 {
  37         char buffer[1024];
  38         FILE *mapfd;
  39         char *c, *name, *id, *q;
  40         struct map2id_s *p;
  41         int lnr = 0;
  42
  43         if ((mapfd = fopen(filename,"r")) == NULL)
  44         {
  45                 rc_log(LOG_ERR,"rc_read_mapfile: can't read %s: %s", filename, strerror(errno));
  46                 return (-1);
  47         }
  48
  49 #define SKIP(p) while(*p && isspace(*p)) p++;
  50
  51         while (fgets(buffer, sizeof(buffer), mapfd) != NULL)
  52         {
  53                 lnr++;
  54
  55                 q = buffer;
  56
  57                 SKIP(q);
  58
  59                 if ((*q == '\n') || (*q == '#') || (*q == '\0'))
  60                         continue;
  61
  62                 if (( c = strchr(q, ' ')) || (c = strchr(q,'\t'))) {
  63
  64                         *c = '\0'; c++;
  65                         SKIP(c);
  66
  67                         name = q;
  68                         id = c;
  69
  70                         if ((p = (struct map2id_s *)malloc(sizeof(*p))) == NULL) {
  71                                 rc_log(LOG_CRIT,"rc_read_mapfile: out of memory");
  72                                 return (-1);
  73                         }
  74
  75                         p->name = strdup(name);
  76                         p->id = atoi(id);
  77                         p->next = map2id_list;
  78                         map2id_list = p;
  79
  80                 } else {
  81
  82                         rc_log(LOG_ERR, "rc_read_mapfile: malformed line in %s, line %d", filename, lnr);
  83                         return (-1);
  84
  85                 }
  86         }
  87
  88 #undef SKIP
  89
  90         fclose(mapfd);
  91
  92         return 0;
  93 }
  94
  95 /*
  96  * Function: rc_map2id
  97  *
  98  * Purpose: Map ttyname to port id
  99  *
 100  * Arguments: full pathname of the tty
 101  *
 102  * Returns: port id, zero if no entry found
 103  */
 104
 105 UINT4 rc_map2id(char *name)
 106 {
 107         struct map2id_s *p;
 108         char ttyname[PATH_MAX];
 109
 110         *ttyname = '\0';
 111         if (*name != '/')
 112                 strcpy(ttyname, "/dev/");
 113
 114         strncat(ttyname, name, sizeof(ttyname));
 115
 116         for(p = map2id_list; p; p = p->next)
 117                 if (!strcmp(ttyname, p->name)) return p->id;
 118
 119         rc_log(LOG_WARNING,"rc_map2id: can't find tty %s in map database", ttyname);
 120
 121         return 0;
 122 }