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Annotation of embedaddon/coova-chilli/src/garden.c, revision 1.1

1.1     ! misho       1: /* 
        !             2:  * Copyright (C) 2003, 2004, 2005 Mondru AB.
        !             3:  * Copyright (c) 2006-2007 David Bird <david@coova.com>
        !             4:  * 
        !             5:  * The contents of this file may be used under the terms of the GNU
        !             6:  * General Public License Version 2, provided that the above copyright
        !             7:  * notice and this permission notice is included in all copies or
        !             8:  * substantial portions of the software.
        !             9:  * 
        !            10:  */
        !            11: 
        !            12: #include "system.h"
        !            13: #include "ippool.h"
        !            14: #include "radius.h"
        !            15: #include "radius_wispr.h"
        !            16: #include "radius_chillispot.h"
        !            17: #include "redir.h"
        !            18: #include "syserr.h"
        !            19: #include "dhcp.h"
        !            20: #include "cmdline.h"
        !            21: #include "chilli.h"
        !            22: #include "options.h"
        !            23: 
        !            24: int pass_through_add(pass_through *ptlist, size_t ptlen, size_t *ptcnt, pass_through *pt) {
        !            25:   size_t cnt = *ptcnt;
        !            26:   int i;
        !            27: 
        !            28:   if (cnt >= ptlen) {
        !            29:     if (options.debug) 
        !            30:       log_dbg("No more room for walled garden entries");
        !            31:     return -1;
        !            32:   }
        !            33: 
        !            34:   for (i=0; i < cnt; i++) {
        !            35:     if (!memcmp(&ptlist[i],pt,sizeof(pass_through))) {
        !            36:       if (options.debug) 
        !            37:        log_info("Uamallowed already exists #%d:%d: proto=%d host=%s port=%d", i, ptlen,
        !            38:                 pt->proto, inet_ntoa(pt->host), pt->port);
        !            39:       return 0;
        !            40:     }
        !            41:   }
        !            42: 
        !            43:   if (options.debug) 
        !            44:     log_info("Uamallowed IP address #%d:%d: proto=%d host=%s port=%d", cnt, ptlen,
        !            45:             pt->proto, inet_ntoa(pt->host), pt->port);
        !            46: 
        !            47:   memcpy(&ptlist[cnt], pt, sizeof(pass_through));
        !            48:   *ptcnt = cnt + 1;
        !            49:   return 0;
        !            50: }
        !            51: 
        !            52: int pass_throughs_from_string(pass_through *ptlist, size_t ptlen, size_t *ptcnt, char *s) {
        !            53:   struct hostent *host;
        !            54:   pass_through pt;
        !            55:   char *t, *p1 = NULL, *p2 = NULL;
        !            56:   char *p3 = malloc(strlen(s)+1);
        !            57:   strcpy(p3, s);
        !            58:   p1 = p3;
        !            59:   
        !            60:   if (options.debug) 
        !            61:     log_dbg("Uamallowed %s", s);
        !            62:   
        !            63:   for ( ; p1; p1 = p2) {
        !            64:     
        !            65:     /* save the next entry position */
        !            66:     if ((p2 = strchr(p1, ','))) { *p2=0; p2++; }
        !            67:     
        !            68:     /* clear the pass-through entry in case we partitially filled it already */
        !            69:     memset(&pt, 0, sizeof(pass_through));
        !            70:     
        !            71:     /* eat whitespace */
        !            72:     while (isspace(*p1)) p1++;
        !            73:     
        !            74:     /* look for specific protocols */
        !            75:     if ((t = strchr(p1, ':'))) { 
        !            76:       int pnum = 0;
        !            77: 
        !            78:       *t = 0;
        !            79: 
        !            80: #ifdef HAVE_GETPROTOENT      
        !            81:       if (1) {
        !            82:        struct protoent *proto = getprotobyname(p1);
        !            83: 
        !            84:        if (!proto && !strchr(p1, '.')) 
        !            85:          proto = getprotobynumber(atoi(p1));
        !            86: 
        !            87:        if (proto) 
        !            88:          pnum = proto->p_proto;
        !            89:       }
        !            90: #else
        !            91:       if      (!strcmp(p1,"tcp"))  { pnum = DHCP_IP_TCP;  }
        !            92:       else if (!strcmp(p1,"udp"))  { pnum = DHCP_IP_UDP;  }
        !            93:       else if (!strcmp(p1,"icmp")) { pnum = DHCP_IP_ICMP; }
        !            94: #endif
        !            95: 
        !            96:       if (pnum > 0) {
        !            97:        /* if a protocol, skip ahead */
        !            98:        pt.proto = pnum;
        !            99:        p1 = t + 1;
        !           100:       } else {
        !           101:        /* if not a protocol, put the ':' back */
        !           102:        *t = ':';
        !           103:       }
        !           104:     }
        !           105:     
        !           106:     /* look for an optional port */
        !           107:     if ((t = strchr(p1, ':'))) { 
        !           108:       pt.port = atoi(t+1); 
        !           109:       *t = 0; 
        !           110:     }
        !           111:     
        !           112:     if (strchr(p1, '/')) {     /* parse a network address */
        !           113:       if (option_aton(&pt.host, &pt.mask, p1, 0)) {
        !           114:        log_err(0, "Invalid uamallowed network address or mask %s!", s);
        !           115:        continue;
        !           116:       } 
        !           117:       if (pass_through_add(ptlist, ptlen, ptcnt, &pt))
        !           118:        log_err(0, "Too many pass-throughs! skipped %s", s);
        !           119:     }
        !           120:     else {     /* otherwise, parse a host ip or hostname */
        !           121:       int j = 0;
        !           122:       pt.mask.s_addr = 0xffffffff;
        !           123: 
        !           124:       if (!(host = gethostbyname(p1))) {
        !           125:        log_err(errno, "Invalid uamallowed domain or address: %s!", p1);
        !           126:        continue;
        !           127:       }
        !           128: 
        !           129:       while (host->h_addr_list[j] != NULL) {
        !           130:        pt.host = *((struct in_addr *) host->h_addr_list[j++]);
        !           131:        if (pass_through_add(ptlist, ptlen, ptcnt, &pt))
        !           132:          log_err(0, "Too many pass-throughs! skipped %s", s);
        !           133:       }
        !           134:     }
        !           135:   }
        !           136: 
        !           137:   free(p3);
        !           138:   return 0;
        !           139: }
        !           140: