Magellan Linux

  • Back to homepage
    • /[magellan-source]/trunk/mkinitrd-magellan/klibc/usr/kinit/ipconfig/dhcp_proto.c

    Diff of /trunk/mkinitrd-magellan/klibc/usr/kinit/ipconfig/dhcp_proto.c

    Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

    revision 532 by niro, Sat Sep 1 22:45:15 2007 UTC revision 1122 by niro, Wed Aug 18 21:11:40 2010 UTC
    # Line 49  static uint8_t dhcp_end[] = { Line 49  static uint8_t dhcp_end[] = {
    49    
    50  /* Both iovecs below have to have the same structure, since dhcp_send()  /* Both iovecs below have to have the same structure, since dhcp_send()
    51     pokes at the internals */     pokes at the internals */
    52  #define DHCP_IOV_LEN 6  #define DHCP_IOV_LEN 7
    53    
    54  static struct iovec dhcp_discover_iov[] = {  static struct iovec dhcp_discover_iov[DHCP_IOV_LEN] = {
    55   /* [0] = ip + udp header */   /* [0] = ip + udp header */
    56   /* [1] = bootp header */   /* [1] = bootp header */
    57   [2] = {dhcp_discover_hdr, sizeof(dhcp_discover_hdr)},   [2] = {dhcp_discover_hdr, sizeof(dhcp_discover_hdr)},
    58   [3] = {dhcp_params, sizeof(dhcp_params)},   [3] = {dhcp_params, sizeof(dhcp_params)},
    59   /* [4] = DHCP vendor class */   /* [4] = optional vendor class */
    60   [5] = {dhcp_end, sizeof(dhcp_end)}   /* [5] = optional hostname */
    61     /* [6] = {dhcp_end, sizeof(dhcp_end)} */
    62  };  };
    63    
    64  static struct iovec dhcp_request_iov[] = {  static struct iovec dhcp_request_iov[DHCP_IOV_LEN] = {
    65   /* [0] = ip + udp header */   /* [0] = ip + udp header */
    66   /* [1] = bootp header */   /* [1] = bootp header */
    67   [2] = {dhcp_request_hdr, sizeof(dhcp_request_hdr)},   [2] = {dhcp_request_hdr, sizeof(dhcp_request_hdr)},
    68   [3] = {dhcp_params, sizeof(dhcp_params)},   [3] = {dhcp_params, sizeof(dhcp_params)},
    69   /* [4] = DHCP vendor class */   /* [4] = optional vendor class */
    70   [5] = {dhcp_end, sizeof(dhcp_end)}   /* [5] = optional hostname */
    71     /* [6] = {dhcp_end, sizeof(dhcp_end)} */
    72  };  };
    73    
    74  /*  /*
    75   * Parse a DHCP response packet   * Parse a DHCP response packet
    76     * Returns:
    77     * 0 = Unexpected packet, not parsed
    78     * 2 = DHCPOFFER (from dhcp_proto.h)
    79     * 5 = DHCPACK
    80     * 6 = DHCPNACK
    81   */   */
    82  static int  static int dhcp_parse(struct netdev *dev, struct bootp_hdr *hdr,
    83  dhcp_parse(struct netdev *dev, struct bootp_hdr *hdr, uint8_t * exts, int extlen)        uint8_t * exts, int extlen)
    84  {  {
    85   uint8_t type = 0;   uint8_t type = 0;
    86   uint32_t serverid = INADDR_NONE;   uint32_t serverid = INADDR_NONE;
    # Line 101  dhcp_parse(struct netdev *dev, struct bo Line 108  dhcp_parse(struct netdev *dev, struct bo
    108    
    109   switch (type) {   switch (type) {
    110   case DHCPOFFER:   case DHCPOFFER:
    111   ret = bootp_parse(dev, hdr, exts, extlen);   ret = bootp_parse(dev, hdr, exts, extlen) ? DHCPOFFER : 0;
    112   if (ret == 1 && serverid != INADDR_NONE)   if (ret == DHCPOFFER && serverid != INADDR_NONE)
    113   dev->serverid = serverid;   dev->serverid = serverid;
    114   DEBUG(("\n   dhcp offer\n"));   dprintf("\n   dhcp offer\n");
    115   break;   break;
    116    
    117   case DHCPACK:   case DHCPACK:
    118   ret = bootp_parse(dev, hdr, exts, extlen);   ret = bootp_parse(dev, hdr, exts, extlen) ? DHCPACK : 0;
    119   DEBUG(("\n   dhcp ack\n"));   dprintf("\n   dhcp ack\n");
    120   break;   break;
    121    
    122   case DHCPNAK:   case DHCPNAK:
    123   ret = 2;   ret = DHCPNAK;
    124   DEBUG(("\n   dhcp nak\n"));   dprintf("\n   dhcp nak\n");
    125   break;   break;
    126   }   }
    127   return ret;   return ret;
    # Line 122  dhcp_parse(struct netdev *dev, struct bo Line 129  dhcp_parse(struct netdev *dev, struct bo
    129    
    130  /*  /*
    131   * Receive and parse a DHCP packet   * Receive and parse a DHCP packet
    132     * Returns:
    133     *-1 = Error in packet_recv, try again later
    134     * 0 = Unexpected packet, discarded
    135     * 2 = DHCPOFFER (from dhcp_proto.h)
    136     * 5 = DHCPACK
    137     * 6 = DHCPNACK
    138   */   */
    139  static int dhcp_recv(struct netdev *dev)  static int dhcp_recv(struct netdev *dev)
    140  {  {
    # Line 135  static int dhcp_recv(struct netdev *dev) Line 148  static int dhcp_recv(struct netdev *dev)
    148   int ret;   int ret;
    149    
    150   ret = packet_recv(iov, 3);   ret = packet_recv(iov, 3);
    151   if (ret <= 0)   if (ret == 0)
    152   return ret;   return -1;
    153    
    154   DEBUG(("\n   dhcp xid %08x ", dev->bootp.xid));   dprintf("\n   dhcp xid %08x ", dev->bootp.xid);
    155    
    156   if (ret < sizeof(struct bootp_hdr) || bootp.op != BOOTP_REPLY || /* RFC951 7.5 */   if (ret < sizeof(struct bootp_hdr) || bootp.op != BOOTP_REPLY ||
    157      bootp.xid != dev->bootp.xid ||      /* RFC951 7.5 */ bootp.xid != dev->bootp.xid ||
    158      memcmp(bootp.chaddr, dev->hwaddr, 16))      memcmp(bootp.chaddr, dev->hwaddr, 16))
    159   return 0;   return 0;
    160    
    # Line 153  static int dhcp_recv(struct netdev *dev) Line 166  static int dhcp_recv(struct netdev *dev)
    166  static int dhcp_send(struct netdev *dev, struct iovec *vec)  static int dhcp_send(struct netdev *dev, struct iovec *vec)
    167  {  {
    168   struct bootp_hdr bootp;   struct bootp_hdr bootp;
    169     char dhcp_hostname[SYS_NMLN+2];
    170     int i = 4;
    171    
    172   memset(&bootp, 0, sizeof(struct bootp_hdr));   memset(&bootp, 0, sizeof(struct bootp_hdr));
    173    
    # Line 160  static int dhcp_send(struct netdev *dev, Line 175  static int dhcp_send(struct netdev *dev,
    175   bootp.htype = dev->hwtype;   bootp.htype = dev->hwtype;
    176   bootp.hlen = dev->hwlen;   bootp.hlen = dev->hwlen;
    177   bootp.xid = dev->bootp.xid;   bootp.xid = dev->bootp.xid;
    178   bootp.ciaddr = dev->ip_addr;   bootp.ciaddr = INADDR_ANY;
    179   bootp.giaddr = dev->bootp.gateway;   bootp.yiaddr = dev->ip_addr;
    180     bootp.giaddr = INADDR_ANY;
    181   bootp.secs = htons(time(NULL) - dev->open_time);   bootp.secs = htons(time(NULL) - dev->open_time);
    182   memcpy(bootp.chaddr, dev->hwaddr, 16);   memcpy(bootp.chaddr, dev->hwaddr, 16);
    183    
    184   vec[1].iov_base = &bootp;   vec[1].iov_base = &bootp;
    185   vec[1].iov_len = sizeof(struct bootp_hdr);   vec[1].iov_len = sizeof(struct bootp_hdr);
    186    
    187   vec[4].iov_base = vendor_class_identifier;   dprintf("xid %08x secs %d ", bootp.xid, ntohs(bootp.secs));
      vec[4].iov_len  = vendor_class_identifier_len;  
    188    
    189   DEBUG(("xid %08x secs %d ", bootp.xid, ntohs(bootp.secs)));   if (vendor_class_identifier_len > 2) {
    190     vec[i].iov_base = vendor_class_identifier;
    191     vec[i].iov_len  = vendor_class_identifier_len;
    192     i++;
    193    
    194     dprintf("vendor_class_identifier \"%.*s\" ",
    195     vendor_class_identifier_len-2,
    196     vendor_class_identifier+2);
    197     }
    198    
    199     if (dev->reqhostname[0] != '\0') {
    200     int len = strlen(dev->reqhostname);
    201     dhcp_hostname[0] = 12;
    202     dhcp_hostname[1] = len;
    203     memcpy(dhcp_hostname+2, dev->reqhostname, len);
    204    
    205     vec[i].iov_base = dhcp_hostname;
    206     vec[i].iov_len  = len+2;
    207     i++;
    208    
    209     printf("hostname %.*s ", len, dhcp_hostname+2);
    210     }
    211    
    212     vec[i].iov_base = dhcp_end;
    213     vec[i].iov_len  = sizeof(dhcp_end);
    214    
    215   return packet_send(dev, vec, DHCP_IOV_LEN);   return packet_send(dev, vec, i + 1);
    216  }  }
    217    
    218  /*  /*
    # Line 184  int dhcp_send_discover(struct netdev *de Line 223  int dhcp_send_discover(struct netdev *de
    223   dev->ip_addr = INADDR_ANY;   dev->ip_addr = INADDR_ANY;
    224   dev->ip_gateway = INADDR_ANY;   dev->ip_gateway = INADDR_ANY;
    225    
    226   DEBUG(("-> dhcp discover "));   dprintf("-> dhcp discover ");
    227    
    228   return dhcp_send(dev, dhcp_discover_iov);   return dhcp_send(dev, dhcp_discover_iov);
    229  }  }
    # Line 205  int dhcp_send_request(struct netdev *dev Line 244  int dhcp_send_request(struct netdev *dev
    244   memcpy(&dhcp_request_hdr[SERVER_IP_OFF], &dev->serverid, 4);   memcpy(&dhcp_request_hdr[SERVER_IP_OFF], &dev->serverid, 4);
    245   memcpy(&dhcp_request_hdr[REQ_IP_OFF], &dev->ip_addr, 4);   memcpy(&dhcp_request_hdr[REQ_IP_OFF], &dev->ip_addr, 4);
    246    
    247   DEBUG(("-> dhcp request "));   dprintf("-> dhcp request ");
    248    
    249   return dhcp_send(dev, dhcp_request_iov);   return dhcp_send(dev, dhcp_request_iov);
    250  }  }
    Legend:
    Removed from v.532  
    changed lines
      Added in v.1122