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1 /* Distributed Checksum Clearinghouse |
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2 * |
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3 * DNS blacklist and external filter definitions |
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4 * |
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5 * Copyright (c) 2008 by Rhyolite Software, LLC |
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6 * |
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7 * This agreement is not applicable to any entity which sells anti-spam |
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8 * solutions to others or provides an anti-spam solution as part of a |
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9 * security solution sold to other entities, or to a private network |
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10 * which employs the DCC or uses data provided by operation of the DCC |
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11 * but does not provide corresponding data to other users. |
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12 * |
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13 * Permission to use, copy, modify, and distribute this software without |
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14 * changes for any purpose with or without fee is hereby granted, provided |
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15 * that the above copyright notice and this permission notice appear in all |
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16 * copies and any distributed versions or copies are either unchanged |
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17 * or not called anything similar to "DCC" or "Distributed Checksum |
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18 * Clearinghouse". |
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19 * |
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20 * Parties not eligible to receive a license under this agreement can |
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21 * obtain a commercial license to use DCC by contacting Rhyolite Software |
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22 * at sales@rhyolite.com. |
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23 * |
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24 * A commercial license would be for Distributed Checksum and Reputation |
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25 * Clearinghouse software. That software includes additional features. This |
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26 * free license for Distributed ChecksumClearinghouse Software does not in any |
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27 * way grant permision to use Distributed Checksum and Reputation Clearinghouse |
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28 * software |
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29 * |
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30 * THE SOFTWARE IS PROVIDED "AS IS" AND RHYOLITE SOFTWARE, LLC DISCLAIMS ALL |
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31 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES |
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32 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL RHYOLITE SOFTWARE, LLC |
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33 * BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES |
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34 * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, |
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35 * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, |
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36 * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS |
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37 * SOFTWARE. |
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38 * |
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39 * Rhyolite Software DCC 1.3.103-1.33 $Revision$ |
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40 */ |
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41 |
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42 #ifndef HELPER_H |
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43 #define HELPER_H |
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44 |
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45 #include "dcc_ck.h" |
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46 |
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47 #define HELPER_IDLE_STOP_SECS (10*60) /* helpers die of this much boredom */ |
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48 #define HELPER_IDLE_RESTART (HELPER_IDLE_STOP_SECS - 30) |
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49 #define HELPER_AUTO_REAP (HELPER_IDLE_STOP_SECS / 20) |
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50 |
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51 #define HELPER_PAT "helper=%d,%d,%d" |
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52 |
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53 |
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54 typedef struct { |
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55 u_int sn; /* serial # of parent */ |
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56 u_int gen; /* generation of children */ |
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57 u_int failures; /* failures in this generation */ |
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58 int pipe_write; |
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59 int pipe_read; |
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60 /* save the socket and its port number obtained for the first child |
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61 * to give to later children */ |
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62 SOCKET soc; |
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63 DCC_SOCKU su; |
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64 int req_len; |
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65 int argc; |
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66 int free_args; |
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67 char const **argv; |
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68 pid_t *pids; |
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69 int total_helpers; |
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70 int max_helpers; |
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71 int idle_helpers; |
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72 int slow_helpers; /* hung or at least slow helpers */ |
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73 int debug; |
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74 time_t idle_restart; /* restart helpers after then */ |
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75 u_char is_child; |
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76 } HELPER; |
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77 |
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78 extern HELPER helper; |
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79 |
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80 |
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81 typedef struct { |
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82 u_int version; |
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83 u_int magic; |
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84 u_int sn; |
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85 struct timeval start; /* when job started */ |
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86 time_t avail_us; /* microseconds available for job */ |
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87 char id[DCC_MSG_ID_LEN+1]; |
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88 } HELPER_REQ_HDR; |
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89 |
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90 typedef struct { |
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91 u_int version; |
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92 u_int magic; |
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93 u_int sn; |
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94 } HELPER_RESP_HDR; |
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95 |
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96 #define HELPER_VERSION 0x10 |
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97 #define HELPER_MAGIC_REQ 0xbeefdead |
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98 #define HELPER_MAGIC_RESP 0xdeadbeef |
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99 |
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100 typedef struct { |
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101 HELPER_REQ_HDR hdr; |
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102 DNSBL_FGS fg; /* what to look for */ |
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103 DNSBL_UNHIT unhit; /* groups of DNSBLs not still yet hit */ |
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104 DNSBL_FGS fgs[MAX_DNSBL_GROUPS]; |
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105 DNSBL_TGT tgt; |
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106 } DNSBL_REQ; |
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107 |
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108 typedef struct { |
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109 DNSBL_FGS fgs; /* what was found */ |
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110 int bl_num; /* # of DNSBL hit */ |
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111 char result[DCC_SU2STR_SIZE]; /* IP address found in DNSBL */ |
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112 DNSBL_DOM tgt; /* name or address sought in DNSBL */ |
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113 DNSBL_DOM probe; /* what was actually looked up */ |
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114 } DNSBL_RESP_GROUP; |
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115 typedef struct { |
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116 HELPER_RESP_HDR hdr; |
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117 DNSBL_UNHIT unhit; /* groups of DNSBLs not yet hit */ |
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118 DNSBL_RESP_GROUP groups[MAX_DNSBL_GROUPS]; |
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119 } DNSBL_RESP; |
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120 |
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121 |
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122 extern void NRATTRIB helper_child(SOCKET, int, int); |
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123 extern void reap_helpers(u_char); |
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124 extern u_char ask_helper(DCC_CLNT_CTXT *, void *, time_t, |
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125 HELPER_REQ_HDR *, int, HELPER_RESP_HDR *, int); |
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126 |
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127 extern u_char dnsbl_work(const DNSBL_REQ *, DNSBL_RESP *); |
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128 |
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129 #endif /* HELPER_H */ |
