1 | #ifndef _RESOLV_H
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2 | #define _RESOLV_H
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3 |
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4 | #include <stdint.h>
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5 | #include <arpa/nameser.h>
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6 | #include <netinet/in.h>
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7 |
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8 | #ifdef __cplusplus
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9 | extern "C" {
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10 | #endif
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11 |
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12 | #define MAXNS 3
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13 | #define MAXDFLSRCH 3
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14 | #define MAXDNSRCH 6
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15 | #define LOCALDOMAINPARTS 2
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16 |
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17 | #define RES_TIMEOUT 5
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18 | #define MAXRESOLVSORT 10
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19 | #define RES_MAXNDOTS 15
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20 | #define RES_MAXRETRANS 30
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21 | #define RES_MAXRETRY 5
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22 | #define RES_DFLRETRY 2
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23 | #define RES_MAXTIME 65535
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24 |
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25 | /* unused; purely for broken apps */
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26 | typedef struct __res_state {
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27 | int retrans;
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28 | int retry;
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29 | unsigned long options;
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30 | int nscount;
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31 | struct sockaddr_in nsaddr_list[MAXNS];
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32 | # define nsaddr nsaddr_list[0]
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33 | unsigned short id;
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34 | char *dnsrch[MAXDNSRCH+1];
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35 | char defdname[256];
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36 | unsigned long pfcode;
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37 | unsigned ndots:4;
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38 | unsigned nsort:4;
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39 | unsigned ipv6_unavail:1;
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40 | unsigned unused:23;
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41 | struct {
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42 | struct in_addr addr;
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43 | uint32_t mask;
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44 | } sort_list[MAXRESOLVSORT];
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45 | void *qhook;
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46 | void *rhook;
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47 | int res_h_errno;
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48 | int _vcsock;
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49 | unsigned _flags;
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50 | union {
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51 | char pad[52];
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52 | struct {
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53 | uint16_t nscount;
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54 | uint16_t nsmap[MAXNS];
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55 | int nssocks[MAXNS];
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56 | uint16_t nscount6;
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57 | uint16_t nsinit;
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58 | struct sockaddr_in6 *nsaddrs[MAXNS];
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59 | unsigned int _initstamp[2];
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60 | } _ext;
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61 | } _u;
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62 | } *res_state;
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63 |
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64 | #define __RES 19960801
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65 |
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66 | #ifndef _PATH_RESCONF
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67 | #define _PATH_RESCONF "/etc/resolv.conf"
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68 | #endif
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69 |
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70 | struct res_sym {
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71 | int number;
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72 | char *name;
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73 | char *humanname;
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74 | };
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75 |
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76 | #define RES_F_VC 0x00000001
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77 | #define RES_F_CONN 0x00000002
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78 | #define RES_F_EDNS0ERR 0x00000004
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79 |
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80 | #define RES_EXHAUSTIVE 0x00000001
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81 |
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82 | #define RES_INIT 0x00000001
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83 | #define RES_DEBUG 0x00000002
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84 | #define RES_AAONLY 0x00000004
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85 | #define RES_USEVC 0x00000008
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86 | #define RES_PRIMARY 0x00000010
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87 | #define RES_IGNTC 0x00000020
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88 | #define RES_RECURSE 0x00000040
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89 | #define RES_DEFNAMES 0x00000080
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90 | #define RES_STAYOPEN 0x00000100
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91 | #define RES_DNSRCH 0x00000200
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92 | #define RES_INSECURE1 0x00000400
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93 | #define RES_INSECURE2 0x00000800
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94 | #define RES_NOALIASES 0x00001000
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95 | #define RES_USE_INET6 0x00002000
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96 | #define RES_ROTATE 0x00004000
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97 | #define RES_NOCHECKNAME 0x00008000
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98 | #define RES_KEEPTSIG 0x00010000
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99 | #define RES_BLAST 0x00020000
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100 | #define RES_USEBSTRING 0x00040000
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101 | #define RES_NOIP6DOTINT 0x00080000
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102 | #define RES_USE_EDNS0 0x00100000
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103 | #define RES_SNGLKUP 0x00200000
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104 | #define RES_SNGLKUPREOP 0x00400000
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105 | #define RES_USE_DNSSEC 0x00800000
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106 |
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107 | #define RES_DEFAULT (RES_RECURSE|RES_DEFNAMES|RES_DNSRCH|RES_NOIP6DOTINT)
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108 |
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109 | #define RES_PRF_STATS 0x00000001
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110 | #define RES_PRF_UPDATE 0x00000002
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111 | #define RES_PRF_CLASS 0x00000004
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112 | #define RES_PRF_CMD 0x00000008
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113 | #define RES_PRF_QUES 0x00000010
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114 | #define RES_PRF_ANS 0x00000020
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115 | #define RES_PRF_AUTH 0x00000040
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116 | #define RES_PRF_ADD 0x00000080
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117 | #define RES_PRF_HEAD1 0x00000100
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118 | #define RES_PRF_HEAD2 0x00000200
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119 | #define RES_PRF_TTLID 0x00000400
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120 | #define RES_PRF_HEADX 0x00000800
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121 | #define RES_PRF_QUERY 0x00001000
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122 | #define RES_PRF_REPLY 0x00002000
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123 | #define RES_PRF_INIT 0x00004000
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124 |
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125 | struct __res_state *__res_state(void);
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126 | #define _res (*__res_state())
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127 |
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128 | int res_init(void);
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129 | int res_query(const char *, int, int, unsigned char *, int);
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130 | int res_querydomain(const char *, const char *, int, int, unsigned char *, int);
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131 | int res_search(const char *, int, int, unsigned char *, int);
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132 | int res_mkquery(int, const char *, int, int, const unsigned char *, int, const unsigned char*, unsigned char *, int);
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133 | int res_send(const unsigned char *, int, unsigned char *, int);
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134 | int dn_comp(const char *, unsigned char *, int, unsigned char **, unsigned char **);
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135 | int dn_expand(const unsigned char *, const unsigned char *, const unsigned char *, char *, int);
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136 | int dn_skipname(const unsigned char *, const unsigned char *);
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137 |
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138 | #ifdef __cplusplus
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139 | }
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140 | #endif
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141 |
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142 | #endif
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