1 | #include <machine/rtems-bsd-user-space.h> |
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2 | |
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3 | /* |
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4 | * Copyright (c) 1983, 1993 |
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5 | * The Regents of the University of California. All rights reserved. |
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6 | * |
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7 | * Redistribution and use in source and binary forms, with or without |
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8 | * modification, are permitted provided that the following conditions |
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9 | * are met: |
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10 | * 1. Redistributions of source code must retain the above copyright |
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11 | * notice, this list of conditions and the following disclaimer. |
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12 | * 2. Redistributions in binary form must reproduce the above copyright |
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13 | * notice, this list of conditions and the following disclaimer in the |
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14 | * documentation and/or other materials provided with the distribution. |
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15 | * 4. Neither the name of the University nor the names of its contributors |
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16 | * may be used to endorse or promote products derived from this software |
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17 | * without specific prior written permission. |
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18 | * |
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19 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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29 | * SUCH DAMAGE. |
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30 | */ |
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31 | |
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32 | #if defined(LIBC_SCCS) && !defined(lint) |
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33 | static char sccsid[] = "@(#)getservent.c 8.1 (Berkeley) 6/4/93"; |
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34 | #endif /* LIBC_SCCS and not lint */ |
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35 | #include <sys/cdefs.h> |
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36 | __FBSDID("$FreeBSD$"); |
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37 | |
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38 | #include <rtems/bsd/sys/param.h> |
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39 | #include <sys/types.h> |
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40 | #include <sys/socket.h> |
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41 | #include <arpa/inet.h> |
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42 | #include <db.h> |
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43 | #include <errno.h> |
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44 | #include <fcntl.h> |
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45 | #include <limits.h> |
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46 | #include <netdb.h> |
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47 | #include <nsswitch.h> |
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48 | #include <stdio.h> |
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49 | #include <string.h> |
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50 | #include <stdlib.h> |
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51 | #include <unistd.h> |
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52 | #ifdef YP |
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53 | #include <rpc/rpc.h> |
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54 | #include <rpcsvc/yp_prot.h> |
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55 | #include <rpcsvc/ypclnt.h> |
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56 | #endif |
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57 | #include "namespace.h" |
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58 | #include "reentrant.h" |
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59 | #include "un-namespace.h" |
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60 | #include "netdb_private.h" |
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61 | #ifdef NS_CACHING |
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62 | #include "nscache.h" |
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63 | #endif |
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64 | #include "nss_tls.h" |
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65 | |
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66 | enum constants |
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67 | { |
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68 | SETSERVENT = 1, |
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69 | ENDSERVENT = 2, |
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70 | SERVENT_STORAGE_INITIAL = 1 << 10, /* 1 KByte */ |
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71 | SERVENT_STORAGE_MAX = 1 << 20, /* 1 MByte */ |
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72 | }; |
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73 | |
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74 | struct servent_mdata |
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75 | { |
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76 | enum nss_lookup_type how; |
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77 | int compat_mode; |
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78 | }; |
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79 | |
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80 | static const ns_src defaultsrc[] = { |
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81 | { NSSRC_COMPAT, NS_SUCCESS }, |
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82 | { NULL, 0 } |
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83 | }; |
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84 | |
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85 | static int servent_unpack(char *, struct servent *, char **, size_t, int *); |
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86 | |
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87 | /* files backend declarations */ |
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88 | struct files_state |
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89 | { |
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90 | FILE *fp; |
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91 | int stayopen; |
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92 | |
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93 | int compat_mode_active; |
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94 | }; |
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95 | static void files_endstate(void *); |
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96 | NSS_TLS_HANDLING(files); |
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97 | |
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98 | static int files_servent(void *, void *, va_list); |
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99 | static int files_setservent(void *, void *, va_list); |
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100 | |
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101 | /* db backend declarations */ |
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102 | struct db_state |
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103 | { |
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104 | DB *db; |
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105 | int stayopen; |
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106 | int keynum; |
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107 | }; |
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108 | static void db_endstate(void *); |
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109 | NSS_TLS_HANDLING(db); |
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110 | |
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111 | static int db_servent(void *, void *, va_list); |
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112 | static int db_setservent(void *, void *, va_list); |
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113 | |
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114 | #ifdef YP |
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115 | /* nis backend declarations */ |
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116 | static int nis_servent(void *, void *, va_list); |
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117 | static int nis_setservent(void *, void *, va_list); |
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118 | |
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119 | struct nis_state |
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120 | { |
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121 | int yp_stepping; |
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122 | char yp_domain[MAXHOSTNAMELEN]; |
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123 | char *yp_key; |
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124 | int yp_keylen; |
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125 | }; |
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126 | static void nis_endstate(void *); |
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127 | NSS_TLS_HANDLING(nis); |
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128 | |
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129 | static int nis_servent(void *, void *, va_list); |
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130 | static int nis_setservent(void *, void *, va_list); |
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131 | #endif |
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132 | |
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133 | /* compat backend declarations */ |
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134 | static int compat_setservent(void *, void *, va_list); |
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135 | |
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136 | /* get** wrappers for get**_r functions declarations */ |
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137 | struct servent_state { |
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138 | struct servent serv; |
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139 | char *buffer; |
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140 | size_t bufsize; |
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141 | }; |
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142 | static void servent_endstate(void *); |
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143 | NSS_TLS_HANDLING(servent); |
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144 | |
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145 | struct key { |
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146 | const char *proto; |
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147 | union { |
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148 | const char *name; |
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149 | int port; |
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150 | }; |
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151 | }; |
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152 | |
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153 | static int wrap_getservbyname_r(struct key, struct servent *, char *, size_t, |
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154 | struct servent **); |
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155 | static int wrap_getservbyport_r(struct key, struct servent *, char *, size_t, |
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156 | struct servent **); |
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157 | static int wrap_getservent_r(struct key, struct servent *, char *, size_t, |
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158 | struct servent **); |
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159 | static struct servent *getserv(int (*fn)(struct key, struct servent *, char *, |
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160 | size_t, struct servent **), struct key); |
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161 | |
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162 | #ifdef NS_CACHING |
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163 | static int serv_id_func(char *, size_t *, va_list, void *); |
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164 | static int serv_marshal_func(char *, size_t *, void *, va_list, void *); |
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165 | static int serv_unmarshal_func(char *, size_t, void *, va_list, void *); |
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166 | #endif |
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167 | |
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168 | static int |
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169 | servent_unpack(char *p, struct servent *serv, char **aliases, |
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170 | size_t aliases_size, int *errnop) |
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171 | { |
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172 | char *cp, **q, *endp; |
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173 | long l; |
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174 | |
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175 | if (*p == '#') |
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176 | return -1; |
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177 | |
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178 | memset(serv, 0, sizeof(struct servent)); |
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179 | |
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180 | cp = strpbrk(p, "#\n"); |
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181 | if (cp != NULL) |
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182 | *cp = '\0'; |
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183 | serv->s_name = p; |
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184 | |
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185 | p = strpbrk(p, " \t"); |
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186 | if (p == NULL) |
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187 | return -1; |
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188 | *p++ = '\0'; |
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189 | while (*p == ' ' || *p == '\t') |
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190 | p++; |
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191 | cp = strpbrk(p, ",/"); |
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192 | if (cp == NULL) |
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193 | return -1; |
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194 | |
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195 | *cp++ = '\0'; |
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196 | l = strtol(p, &endp, 10); |
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197 | if (endp == p || *endp != '\0' || l < 0 || l > USHRT_MAX) |
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198 | return -1; |
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199 | serv->s_port = htons((in_port_t)l); |
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200 | serv->s_proto = cp; |
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201 | |
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202 | q = serv->s_aliases = aliases; |
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203 | cp = strpbrk(cp, " \t"); |
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204 | if (cp != NULL) |
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205 | *cp++ = '\0'; |
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206 | while (cp && *cp) { |
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207 | if (*cp == ' ' || *cp == '\t') { |
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208 | cp++; |
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209 | continue; |
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210 | } |
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211 | if (q < &aliases[aliases_size - 1]) { |
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212 | *q++ = cp; |
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213 | } else { |
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214 | *q = NULL; |
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215 | *errnop = ERANGE; |
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216 | return -1; |
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217 | } |
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218 | cp = strpbrk(cp, " \t"); |
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219 | if (cp != NULL) |
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220 | *cp++ = '\0'; |
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221 | } |
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222 | *q = NULL; |
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223 | |
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224 | return 0; |
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225 | } |
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226 | |
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227 | static int |
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228 | parse_result(struct servent *serv, char *buffer, size_t bufsize, |
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229 | char *resultbuf, size_t resultbuflen, int *errnop) |
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230 | { |
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231 | char **aliases; |
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232 | int aliases_size; |
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233 | |
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234 | if (bufsize <= resultbuflen + _ALIGNBYTES + sizeof(char *)) { |
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235 | *errnop = ERANGE; |
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236 | return (NS_RETURN); |
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237 | } |
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238 | aliases = (char **)_ALIGN(&buffer[resultbuflen + 1]); |
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239 | aliases_size = (buffer + bufsize - (char *)aliases) / sizeof(char *); |
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240 | if (aliases_size < 1) { |
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241 | *errnop = ERANGE; |
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242 | return (NS_RETURN); |
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243 | } |
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244 | |
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245 | memcpy(buffer, resultbuf, resultbuflen); |
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246 | buffer[resultbuflen] = '\0'; |
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247 | |
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248 | if (servent_unpack(buffer, serv, aliases, aliases_size, errnop) != 0) |
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249 | return ((*errnop == 0) ? NS_NOTFOUND : NS_RETURN); |
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250 | return (NS_SUCCESS); |
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251 | } |
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252 | |
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253 | /* files backend implementation */ |
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254 | static void |
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255 | files_endstate(void *p) |
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256 | { |
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257 | FILE * f; |
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258 | |
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259 | if (p == NULL) |
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260 | return; |
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261 | |
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262 | f = ((struct files_state *)p)->fp; |
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263 | if (f != NULL) |
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264 | fclose(f); |
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265 | |
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266 | free(p); |
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267 | } |
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268 | |
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269 | /* |
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270 | * compat structures. compat and files sources functionalities are almost |
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271 | * equal, so they all are managed by files_servent function |
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272 | */ |
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273 | static int |
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274 | files_servent(void *retval, void *mdata, va_list ap) |
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275 | { |
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276 | static const ns_src compat_src[] = { |
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277 | #ifdef YP |
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278 | { NSSRC_NIS, NS_SUCCESS }, |
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279 | #endif |
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280 | { NULL, 0 } |
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281 | }; |
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282 | ns_dtab compat_dtab[] = { |
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283 | { NSSRC_DB, db_servent, |
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284 | (void *)((struct servent_mdata *)mdata)->how }, |
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285 | #ifdef YP |
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286 | { NSSRC_NIS, nis_servent, |
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287 | (void *)((struct servent_mdata *)mdata)->how }, |
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288 | #endif |
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289 | { NULL, NULL, NULL } |
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290 | }; |
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291 | |
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292 | struct files_state *st; |
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293 | int rv; |
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294 | int stayopen; |
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295 | |
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296 | struct servent_mdata *serv_mdata; |
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297 | char *name; |
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298 | char *proto; |
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299 | int port; |
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300 | |
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301 | struct servent *serv; |
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302 | char *buffer; |
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303 | size_t bufsize; |
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304 | int *errnop; |
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305 | |
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306 | size_t linesize; |
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307 | char *line; |
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308 | char **cp; |
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309 | |
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310 | name = NULL; |
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311 | proto = NULL; |
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312 | serv_mdata = (struct servent_mdata *)mdata; |
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313 | switch (serv_mdata->how) { |
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314 | case nss_lt_name: |
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315 | name = va_arg(ap, char *); |
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316 | proto = va_arg(ap, char *); |
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317 | break; |
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318 | case nss_lt_id: |
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319 | port = va_arg(ap, int); |
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320 | proto = va_arg(ap, char *); |
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321 | break; |
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322 | case nss_lt_all: |
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323 | break; |
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324 | default: |
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325 | return NS_NOTFOUND; |
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326 | }; |
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327 | |
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328 | serv = va_arg(ap, struct servent *); |
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329 | buffer = va_arg(ap, char *); |
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330 | bufsize = va_arg(ap, size_t); |
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331 | errnop = va_arg(ap,int *); |
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332 | |
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333 | *errnop = files_getstate(&st); |
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334 | if (*errnop != 0) |
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335 | return (NS_UNAVAIL); |
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336 | |
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337 | if (st->fp == NULL) |
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338 | st->compat_mode_active = 0; |
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339 | |
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340 | if (st->fp == NULL && (st->fp = fopen(_PATH_SERVICES, "r")) == NULL) { |
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341 | *errnop = errno; |
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342 | return (NS_UNAVAIL); |
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343 | } |
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344 | |
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345 | if (serv_mdata->how == nss_lt_all) |
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346 | stayopen = 1; |
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347 | else { |
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348 | rewind(st->fp); |
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349 | stayopen = st->stayopen; |
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350 | } |
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351 | |
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352 | rv = NS_NOTFOUND; |
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353 | do { |
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354 | if (!st->compat_mode_active) { |
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355 | if ((line = fgetln(st->fp, &linesize)) == NULL) { |
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356 | *errnop = errno; |
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357 | rv = NS_RETURN; |
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358 | break; |
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359 | } |
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360 | |
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361 | if (*line=='+' && serv_mdata->compat_mode != 0) |
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362 | st->compat_mode_active = 1; |
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363 | } |
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364 | |
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365 | if (st->compat_mode_active != 0) { |
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366 | switch (serv_mdata->how) { |
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367 | case nss_lt_name: |
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368 | rv = nsdispatch(retval, compat_dtab, |
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369 | NSDB_SERVICES_COMPAT, "getservbyname_r", |
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370 | compat_src, name, proto, serv, buffer, |
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371 | bufsize, errnop); |
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372 | break; |
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373 | case nss_lt_id: |
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374 | rv = nsdispatch(retval, compat_dtab, |
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375 | NSDB_SERVICES_COMPAT, "getservbyport_r", |
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376 | compat_src, port, proto, serv, buffer, |
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377 | bufsize, errnop); |
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378 | break; |
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379 | case nss_lt_all: |
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380 | rv = nsdispatch(retval, compat_dtab, |
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381 | NSDB_SERVICES_COMPAT, "getservent_r", |
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382 | compat_src, serv, buffer, bufsize, errnop); |
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383 | break; |
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384 | } |
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385 | |
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386 | if (!(rv & NS_TERMINATE) || |
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387 | serv_mdata->how != nss_lt_all) |
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388 | st->compat_mode_active = 0; |
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389 | |
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390 | continue; |
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391 | } |
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392 | |
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393 | rv = parse_result(serv, buffer, bufsize, line, linesize, |
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394 | errnop); |
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395 | if (rv == NS_NOTFOUND) |
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396 | continue; |
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397 | if (rv == NS_RETURN) |
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398 | break; |
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399 | |
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400 | rv = NS_NOTFOUND; |
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401 | switch (serv_mdata->how) { |
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402 | case nss_lt_name: |
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403 | if (strcmp(name, serv->s_name) == 0) |
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404 | goto gotname; |
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405 | for (cp = serv->s_aliases; *cp; cp++) |
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406 | if (strcmp(name, *cp) == 0) |
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407 | goto gotname; |
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408 | |
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409 | continue; |
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410 | gotname: |
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411 | if (proto == 0 || strcmp(serv->s_proto, proto) == 0) |
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412 | rv = NS_SUCCESS; |
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413 | break; |
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414 | case nss_lt_id: |
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415 | if (port != serv->s_port) |
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416 | continue; |
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417 | |
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418 | if (proto == 0 || strcmp(serv->s_proto, proto) == 0) |
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419 | rv = NS_SUCCESS; |
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420 | break; |
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421 | case nss_lt_all: |
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422 | rv = NS_SUCCESS; |
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423 | break; |
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424 | } |
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425 | |
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426 | } while (!(rv & NS_TERMINATE)); |
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427 | |
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428 | if (!stayopen && st->fp != NULL) { |
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429 | fclose(st->fp); |
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430 | st->fp = NULL; |
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431 | } |
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432 | |
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433 | if ((rv == NS_SUCCESS) && (retval != NULL)) |
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434 | *(struct servent **)retval=serv; |
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435 | |
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436 | return (rv); |
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437 | } |
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438 | |
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439 | static int |
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440 | files_setservent(void *retval, void *mdata, va_list ap) |
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441 | { |
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442 | struct files_state *st; |
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443 | int rv; |
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444 | int f; |
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445 | |
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446 | rv = files_getstate(&st); |
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447 | if (rv != 0) |
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448 | return (NS_UNAVAIL); |
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449 | |
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450 | switch ((enum constants)mdata) { |
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451 | case SETSERVENT: |
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452 | f = va_arg(ap,int); |
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453 | if (st->fp == NULL) |
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454 | st->fp = fopen(_PATH_SERVICES, "r"); |
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455 | else |
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456 | rewind(st->fp); |
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457 | st->stayopen |= f; |
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458 | break; |
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459 | case ENDSERVENT: |
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460 | if (st->fp != NULL) { |
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461 | fclose(st->fp); |
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462 | st->fp = NULL; |
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463 | } |
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464 | st->stayopen = 0; |
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465 | break; |
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466 | default: |
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467 | break; |
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468 | }; |
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469 | |
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470 | st->compat_mode_active = 0; |
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471 | return (NS_UNAVAIL); |
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472 | } |
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473 | |
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474 | /* db backend implementation */ |
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475 | static void |
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476 | db_endstate(void *p) |
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477 | { |
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478 | DB *db; |
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479 | |
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480 | if (p == NULL) |
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481 | return; |
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482 | |
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483 | db = ((struct db_state *)p)->db; |
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484 | if (db != NULL) |
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485 | db->close(db); |
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486 | |
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487 | free(p); |
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488 | } |
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489 | |
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490 | static int |
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491 | db_servent(void *retval, void *mdata, va_list ap) |
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492 | { |
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493 | char buf[BUFSIZ]; |
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494 | DBT key, data, *result; |
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495 | DB *db; |
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496 | |
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497 | struct db_state *st; |
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498 | int rv; |
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499 | int stayopen; |
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500 | |
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501 | enum nss_lookup_type how; |
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502 | char *name; |
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503 | char *proto; |
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504 | int port; |
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505 | |
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506 | struct servent *serv; |
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507 | char *buffer; |
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508 | size_t bufsize; |
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509 | int *errnop; |
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510 | |
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511 | name = NULL; |
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512 | proto = NULL; |
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513 | how = (enum nss_lookup_type)mdata; |
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514 | switch (how) { |
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515 | case nss_lt_name: |
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516 | name = va_arg(ap, char *); |
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517 | proto = va_arg(ap, char *); |
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518 | break; |
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519 | case nss_lt_id: |
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520 | port = va_arg(ap, int); |
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521 | proto = va_arg(ap, char *); |
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522 | break; |
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523 | case nss_lt_all: |
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524 | break; |
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525 | default: |
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526 | return NS_NOTFOUND; |
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527 | }; |
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528 | |
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529 | serv = va_arg(ap, struct servent *); |
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530 | buffer = va_arg(ap, char *); |
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531 | bufsize = va_arg(ap, size_t); |
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532 | errnop = va_arg(ap,int *); |
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533 | |
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534 | *errnop = db_getstate(&st); |
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535 | if (*errnop != 0) |
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536 | return (NS_UNAVAIL); |
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537 | |
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538 | if (how == nss_lt_all && st->keynum < 0) |
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539 | return (NS_NOTFOUND); |
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540 | |
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541 | if (st->db == NULL) { |
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542 | st->db = dbopen(_PATH_SERVICES_DB, O_RDONLY, 0, DB_HASH, NULL); |
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543 | if (st->db == NULL) { |
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544 | *errnop = errno; |
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545 | return (NS_UNAVAIL); |
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546 | } |
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547 | } |
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548 | |
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549 | stayopen = (how == nss_lt_all) ? 1 : st->stayopen; |
---|
550 | db = st->db; |
---|
551 | |
---|
552 | do { |
---|
553 | switch (how) { |
---|
554 | case nss_lt_name: |
---|
555 | key.data = buf; |
---|
556 | if (proto == NULL) |
---|
557 | key.size = snprintf(buf, sizeof(buf), |
---|
558 | "\376%s", name); |
---|
559 | else |
---|
560 | key.size = snprintf(buf, sizeof(buf), |
---|
561 | "\376%s/%s", name, proto); |
---|
562 | key.size++; |
---|
563 | if (db->get(db, &key, &data, 0) != 0 || |
---|
564 | db->get(db, &data, &key, 0) != 0) { |
---|
565 | rv = NS_NOTFOUND; |
---|
566 | goto db_fin; |
---|
567 | } |
---|
568 | result = &key; |
---|
569 | break; |
---|
570 | case nss_lt_id: |
---|
571 | key.data = buf; |
---|
572 | port = htons(port); |
---|
573 | if (proto == NULL) |
---|
574 | key.size = snprintf(buf, sizeof(buf), |
---|
575 | "\377%d", port); |
---|
576 | else |
---|
577 | key.size = snprintf(buf, sizeof(buf), |
---|
578 | "\377%d/%s", port, proto); |
---|
579 | key.size++; |
---|
580 | if (db->get(db, &key, &data, 0) != 0 || |
---|
581 | db->get(db, &data, &key, 0) != 0) { |
---|
582 | rv = NS_NOTFOUND; |
---|
583 | goto db_fin; |
---|
584 | } |
---|
585 | result = &key; |
---|
586 | break; |
---|
587 | case nss_lt_all: |
---|
588 | key.data = buf; |
---|
589 | key.size = snprintf(buf, sizeof(buf), "%d", |
---|
590 | st->keynum++); |
---|
591 | key.size++; |
---|
592 | if (db->get(db, &key, &data, 0) != 0) { |
---|
593 | st->keynum = -1; |
---|
594 | rv = NS_NOTFOUND; |
---|
595 | goto db_fin; |
---|
596 | } |
---|
597 | result = &data; |
---|
598 | break; |
---|
599 | } |
---|
600 | |
---|
601 | rv = parse_result(serv, buffer, bufsize, result->data, |
---|
602 | result->size - 1, errnop); |
---|
603 | |
---|
604 | } while (!(rv & NS_TERMINATE) && how == nss_lt_all); |
---|
605 | |
---|
606 | db_fin: |
---|
607 | if (!stayopen && st->db != NULL) { |
---|
608 | db->close(db); |
---|
609 | st->db = NULL; |
---|
610 | } |
---|
611 | |
---|
612 | if (rv == NS_SUCCESS && retval != NULL) |
---|
613 | *(struct servent **)retval = serv; |
---|
614 | |
---|
615 | return (rv); |
---|
616 | } |
---|
617 | |
---|
618 | static int |
---|
619 | db_setservent(void *retval, void *mdata, va_list ap) |
---|
620 | { |
---|
621 | DB *db; |
---|
622 | struct db_state *st; |
---|
623 | int rv; |
---|
624 | int f; |
---|
625 | |
---|
626 | rv = db_getstate(&st); |
---|
627 | if (rv != 0) |
---|
628 | return (NS_UNAVAIL); |
---|
629 | |
---|
630 | switch ((enum constants)mdata) { |
---|
631 | case SETSERVENT: |
---|
632 | f = va_arg(ap, int); |
---|
633 | st->stayopen |= f; |
---|
634 | st->keynum = 0; |
---|
635 | break; |
---|
636 | case ENDSERVENT: |
---|
637 | db = st->db; |
---|
638 | if (db != NULL) { |
---|
639 | db->close(db); |
---|
640 | st->db = NULL; |
---|
641 | } |
---|
642 | st->stayopen = 0; |
---|
643 | break; |
---|
644 | default: |
---|
645 | break; |
---|
646 | }; |
---|
647 | |
---|
648 | return (NS_UNAVAIL); |
---|
649 | } |
---|
650 | |
---|
651 | /* nis backend implementation */ |
---|
652 | #ifdef YP |
---|
653 | static void |
---|
654 | nis_endstate(void *p) |
---|
655 | { |
---|
656 | if (p == NULL) |
---|
657 | return; |
---|
658 | |
---|
659 | free(((struct nis_state *)p)->yp_key); |
---|
660 | free(p); |
---|
661 | } |
---|
662 | |
---|
663 | static int |
---|
664 | nis_servent(void *retval, void *mdata, va_list ap) |
---|
665 | { |
---|
666 | char *resultbuf, *lastkey; |
---|
667 | int resultbuflen; |
---|
668 | char buf[YPMAXRECORD + 2]; |
---|
669 | |
---|
670 | struct nis_state *st; |
---|
671 | int rv; |
---|
672 | |
---|
673 | enum nss_lookup_type how; |
---|
674 | char *name; |
---|
675 | char *proto; |
---|
676 | int port; |
---|
677 | |
---|
678 | struct servent *serv; |
---|
679 | char *buffer; |
---|
680 | size_t bufsize; |
---|
681 | int *errnop; |
---|
682 | |
---|
683 | name = NULL; |
---|
684 | proto = NULL; |
---|
685 | how = (enum nss_lookup_type)mdata; |
---|
686 | switch (how) { |
---|
687 | case nss_lt_name: |
---|
688 | name = va_arg(ap, char *); |
---|
689 | proto = va_arg(ap, char *); |
---|
690 | break; |
---|
691 | case nss_lt_id: |
---|
692 | port = va_arg(ap, int); |
---|
693 | proto = va_arg(ap, char *); |
---|
694 | break; |
---|
695 | case nss_lt_all: |
---|
696 | break; |
---|
697 | default: |
---|
698 | return NS_NOTFOUND; |
---|
699 | }; |
---|
700 | |
---|
701 | serv = va_arg(ap, struct servent *); |
---|
702 | buffer = va_arg(ap, char *); |
---|
703 | bufsize = va_arg(ap, size_t); |
---|
704 | errnop = va_arg(ap, int *); |
---|
705 | |
---|
706 | *errnop = nis_getstate(&st); |
---|
707 | if (*errnop != 0) |
---|
708 | return (NS_UNAVAIL); |
---|
709 | |
---|
710 | if (st->yp_domain[0] == '\0') { |
---|
711 | if (getdomainname(st->yp_domain, sizeof st->yp_domain)) { |
---|
712 | *errnop = errno; |
---|
713 | return (NS_UNAVAIL); |
---|
714 | } |
---|
715 | } |
---|
716 | |
---|
717 | do { |
---|
718 | switch (how) { |
---|
719 | case nss_lt_name: |
---|
720 | snprintf(buf, sizeof(buf), "%s/%s", name, proto); |
---|
721 | if (yp_match(st->yp_domain, "services.byname", buf, |
---|
722 | strlen(buf), &resultbuf, &resultbuflen)) { |
---|
723 | rv = NS_NOTFOUND; |
---|
724 | goto fin; |
---|
725 | } |
---|
726 | break; |
---|
727 | case nss_lt_id: |
---|
728 | snprintf(buf, sizeof(buf), "%d/%s", ntohs(port), |
---|
729 | proto); |
---|
730 | |
---|
731 | /* |
---|
732 | * We have to be a little flexible |
---|
733 | * here. Ideally you're supposed to have both |
---|
734 | * a services.byname and a services.byport |
---|
735 | * map, but some systems have only |
---|
736 | * services.byname. FreeBSD cheats a little by |
---|
737 | * putting the services.byport information in |
---|
738 | * the same map as services.byname so that |
---|
739 | * either case will work. We allow for both |
---|
740 | * possibilities here: if there is no |
---|
741 | * services.byport map, we try services.byname |
---|
742 | * instead. |
---|
743 | */ |
---|
744 | rv = yp_match(st->yp_domain, "services.byport", buf, |
---|
745 | strlen(buf), &resultbuf, &resultbuflen); |
---|
746 | if (rv) { |
---|
747 | if (rv == YPERR_MAP) { |
---|
748 | if (yp_match(st->yp_domain, |
---|
749 | "services.byname", buf, |
---|
750 | strlen(buf), &resultbuf, |
---|
751 | &resultbuflen)) { |
---|
752 | rv = NS_NOTFOUND; |
---|
753 | goto fin; |
---|
754 | } |
---|
755 | } else { |
---|
756 | rv = NS_NOTFOUND; |
---|
757 | goto fin; |
---|
758 | } |
---|
759 | } |
---|
760 | |
---|
761 | break; |
---|
762 | case nss_lt_all: |
---|
763 | if (!st->yp_stepping) { |
---|
764 | free(st->yp_key); |
---|
765 | rv = yp_first(st->yp_domain, "services.byname", |
---|
766 | &st->yp_key, &st->yp_keylen, &resultbuf, |
---|
767 | &resultbuflen); |
---|
768 | if (rv) { |
---|
769 | rv = NS_NOTFOUND; |
---|
770 | goto fin; |
---|
771 | } |
---|
772 | st->yp_stepping = 1; |
---|
773 | } else { |
---|
774 | lastkey = st->yp_key; |
---|
775 | rv = yp_next(st->yp_domain, "services.byname", |
---|
776 | st->yp_key, st->yp_keylen, &st->yp_key, |
---|
777 | &st->yp_keylen, &resultbuf, &resultbuflen); |
---|
778 | free(lastkey); |
---|
779 | if (rv) { |
---|
780 | st->yp_stepping = 0; |
---|
781 | rv = NS_NOTFOUND; |
---|
782 | goto fin; |
---|
783 | } |
---|
784 | } |
---|
785 | break; |
---|
786 | }; |
---|
787 | |
---|
788 | rv = parse_result(serv, buffer, bufsize, resultbuf, |
---|
789 | resultbuflen, errnop); |
---|
790 | free(resultbuf); |
---|
791 | |
---|
792 | } while (!(rv & NS_TERMINATE) && how == nss_lt_all); |
---|
793 | |
---|
794 | fin: |
---|
795 | if (rv == NS_SUCCESS && retval != NULL) |
---|
796 | *(struct servent **)retval = serv; |
---|
797 | |
---|
798 | return (rv); |
---|
799 | } |
---|
800 | |
---|
801 | static int |
---|
802 | nis_setservent(void *result, void *mdata, va_list ap) |
---|
803 | { |
---|
804 | struct nis_state *st; |
---|
805 | int rv; |
---|
806 | |
---|
807 | rv = nis_getstate(&st); |
---|
808 | if (rv != 0) |
---|
809 | return (NS_UNAVAIL); |
---|
810 | |
---|
811 | switch ((enum constants)mdata) { |
---|
812 | case SETSERVENT: |
---|
813 | case ENDSERVENT: |
---|
814 | free(st->yp_key); |
---|
815 | st->yp_key = NULL; |
---|
816 | st->yp_stepping = 0; |
---|
817 | break; |
---|
818 | default: |
---|
819 | break; |
---|
820 | }; |
---|
821 | |
---|
822 | return (NS_UNAVAIL); |
---|
823 | } |
---|
824 | #endif |
---|
825 | |
---|
826 | /* compat backend implementation */ |
---|
827 | static int |
---|
828 | compat_setservent(void *retval, void *mdata, va_list ap) |
---|
829 | { |
---|
830 | static const ns_src compat_src[] = { |
---|
831 | #ifdef YP |
---|
832 | { NSSRC_NIS, NS_SUCCESS }, |
---|
833 | #endif |
---|
834 | { NULL, 0 } |
---|
835 | }; |
---|
836 | ns_dtab compat_dtab[] = { |
---|
837 | { NSSRC_DB, db_setservent, mdata }, |
---|
838 | #ifdef YP |
---|
839 | { NSSRC_NIS, nis_setservent, mdata }, |
---|
840 | #endif |
---|
841 | { NULL, NULL, NULL } |
---|
842 | }; |
---|
843 | int f; |
---|
844 | |
---|
845 | (void)files_setservent(retval, mdata, ap); |
---|
846 | |
---|
847 | switch ((enum constants)mdata) { |
---|
848 | case SETSERVENT: |
---|
849 | f = va_arg(ap,int); |
---|
850 | (void)nsdispatch(retval, compat_dtab, NSDB_SERVICES_COMPAT, |
---|
851 | "setservent", compat_src, f); |
---|
852 | break; |
---|
853 | case ENDSERVENT: |
---|
854 | (void)nsdispatch(retval, compat_dtab, NSDB_SERVICES_COMPAT, |
---|
855 | "endservent", compat_src); |
---|
856 | break; |
---|
857 | default: |
---|
858 | break; |
---|
859 | } |
---|
860 | |
---|
861 | return (NS_UNAVAIL); |
---|
862 | } |
---|
863 | |
---|
864 | #ifdef NS_CACHING |
---|
865 | static int |
---|
866 | serv_id_func(char *buffer, size_t *buffer_size, va_list ap, void *cache_mdata) |
---|
867 | { |
---|
868 | char *name; |
---|
869 | char *proto; |
---|
870 | int port; |
---|
871 | |
---|
872 | size_t desired_size, size, size2; |
---|
873 | enum nss_lookup_type lookup_type; |
---|
874 | int res = NS_UNAVAIL; |
---|
875 | |
---|
876 | lookup_type = (enum nss_lookup_type)cache_mdata; |
---|
877 | switch (lookup_type) { |
---|
878 | case nss_lt_name: |
---|
879 | name = va_arg(ap, char *); |
---|
880 | proto = va_arg(ap, char *); |
---|
881 | |
---|
882 | size = strlen(name); |
---|
883 | desired_size = sizeof(enum nss_lookup_type) + size + 1; |
---|
884 | if (proto != NULL) { |
---|
885 | size2 = strlen(proto); |
---|
886 | desired_size += size2 + 1; |
---|
887 | } else |
---|
888 | size2 = 0; |
---|
889 | |
---|
890 | if (desired_size > *buffer_size) { |
---|
891 | res = NS_RETURN; |
---|
892 | goto fin; |
---|
893 | } |
---|
894 | |
---|
895 | memcpy(buffer, &lookup_type, sizeof(enum nss_lookup_type)); |
---|
896 | memcpy(buffer + sizeof(enum nss_lookup_type), name, size + 1); |
---|
897 | |
---|
898 | if (proto != NULL) |
---|
899 | memcpy(buffer + sizeof(enum nss_lookup_type) + size + 1, |
---|
900 | proto, size2 + 1); |
---|
901 | |
---|
902 | res = NS_SUCCESS; |
---|
903 | break; |
---|
904 | case nss_lt_id: |
---|
905 | port = va_arg(ap, int); |
---|
906 | proto = va_arg(ap, char *); |
---|
907 | |
---|
908 | desired_size = sizeof(enum nss_lookup_type) + sizeof(int); |
---|
909 | if (proto != NULL) { |
---|
910 | size = strlen(proto); |
---|
911 | desired_size += size + 1; |
---|
912 | } else |
---|
913 | size = 0; |
---|
914 | |
---|
915 | if (desired_size > *buffer_size) { |
---|
916 | res = NS_RETURN; |
---|
917 | goto fin; |
---|
918 | } |
---|
919 | |
---|
920 | memcpy(buffer, &lookup_type, sizeof(enum nss_lookup_type)); |
---|
921 | memcpy(buffer + sizeof(enum nss_lookup_type), &port, |
---|
922 | sizeof(int)); |
---|
923 | |
---|
924 | if (proto != NULL) |
---|
925 | memcpy(buffer + sizeof(enum nss_lookup_type) + |
---|
926 | sizeof(int), proto, size + 1); |
---|
927 | |
---|
928 | res = NS_SUCCESS; |
---|
929 | break; |
---|
930 | default: |
---|
931 | /* should be unreachable */ |
---|
932 | return (NS_UNAVAIL); |
---|
933 | } |
---|
934 | |
---|
935 | fin: |
---|
936 | *buffer_size = desired_size; |
---|
937 | return (res); |
---|
938 | } |
---|
939 | |
---|
940 | int |
---|
941 | serv_marshal_func(char *buffer, size_t *buffer_size, void *retval, va_list ap, |
---|
942 | void *cache_mdata) |
---|
943 | { |
---|
944 | char *name; |
---|
945 | char *proto; |
---|
946 | int port; |
---|
947 | struct servent *serv; |
---|
948 | char *orig_buf; |
---|
949 | size_t orig_buf_size; |
---|
950 | |
---|
951 | struct servent new_serv; |
---|
952 | size_t desired_size; |
---|
953 | char **alias; |
---|
954 | char *p; |
---|
955 | size_t size; |
---|
956 | size_t aliases_size; |
---|
957 | |
---|
958 | switch ((enum nss_lookup_type)cache_mdata) { |
---|
959 | case nss_lt_name: |
---|
960 | name = va_arg(ap, char *); |
---|
961 | proto = va_arg(ap, char *); |
---|
962 | break; |
---|
963 | case nss_lt_id: |
---|
964 | port = va_arg(ap, int); |
---|
965 | proto = va_arg(ap, char *); |
---|
966 | break; |
---|
967 | case nss_lt_all: |
---|
968 | break; |
---|
969 | default: |
---|
970 | /* should be unreachable */ |
---|
971 | return (NS_UNAVAIL); |
---|
972 | } |
---|
973 | |
---|
974 | serv = va_arg(ap, struct servent *); |
---|
975 | orig_buf = va_arg(ap, char *); |
---|
976 | orig_buf_size = va_arg(ap, size_t); |
---|
977 | |
---|
978 | desired_size = _ALIGNBYTES + sizeof(struct servent) + sizeof(char *); |
---|
979 | if (serv->s_name != NULL) |
---|
980 | desired_size += strlen(serv->s_name) + 1; |
---|
981 | if (serv->s_proto != NULL) |
---|
982 | desired_size += strlen(serv->s_proto) + 1; |
---|
983 | |
---|
984 | aliases_size = 0; |
---|
985 | if (serv->s_aliases != NULL) { |
---|
986 | for (alias = serv->s_aliases; *alias; ++alias) { |
---|
987 | desired_size += strlen(*alias) + 1; |
---|
988 | ++aliases_size; |
---|
989 | } |
---|
990 | |
---|
991 | desired_size += _ALIGNBYTES + |
---|
992 | sizeof(char *) * (aliases_size + 1); |
---|
993 | } |
---|
994 | |
---|
995 | if (*buffer_size < desired_size) { |
---|
996 | /* this assignment is here for future use */ |
---|
997 | *buffer_size = desired_size; |
---|
998 | return (NS_RETURN); |
---|
999 | } |
---|
1000 | |
---|
1001 | memcpy(&new_serv, serv, sizeof(struct servent)); |
---|
1002 | memset(buffer, 0, desired_size); |
---|
1003 | |
---|
1004 | *buffer_size = desired_size; |
---|
1005 | p = buffer + sizeof(struct servent) + sizeof(char *); |
---|
1006 | memcpy(buffer + sizeof(struct servent), &p, sizeof(char *)); |
---|
1007 | p = (char *)_ALIGN(p); |
---|
1008 | |
---|
1009 | if (new_serv.s_name != NULL) { |
---|
1010 | size = strlen(new_serv.s_name); |
---|
1011 | memcpy(p, new_serv.s_name, size); |
---|
1012 | new_serv.s_name = p; |
---|
1013 | p += size + 1; |
---|
1014 | } |
---|
1015 | |
---|
1016 | if (new_serv.s_proto != NULL) { |
---|
1017 | size = strlen(new_serv.s_proto); |
---|
1018 | memcpy(p, new_serv.s_proto, size); |
---|
1019 | new_serv.s_proto = p; |
---|
1020 | p += size + 1; |
---|
1021 | } |
---|
1022 | |
---|
1023 | if (new_serv.s_aliases != NULL) { |
---|
1024 | p = (char *)_ALIGN(p); |
---|
1025 | memcpy(p, new_serv.s_aliases, sizeof(char *) * aliases_size); |
---|
1026 | new_serv.s_aliases = (char **)p; |
---|
1027 | p += sizeof(char *) * (aliases_size + 1); |
---|
1028 | |
---|
1029 | for (alias = new_serv.s_aliases; *alias; ++alias) { |
---|
1030 | size = strlen(*alias); |
---|
1031 | memcpy(p, *alias, size); |
---|
1032 | *alias = p; |
---|
1033 | p += size + 1; |
---|
1034 | } |
---|
1035 | } |
---|
1036 | |
---|
1037 | memcpy(buffer, &new_serv, sizeof(struct servent)); |
---|
1038 | return (NS_SUCCESS); |
---|
1039 | } |
---|
1040 | |
---|
1041 | int |
---|
1042 | serv_unmarshal_func(char *buffer, size_t buffer_size, void *retval, va_list ap, |
---|
1043 | void *cache_mdata) |
---|
1044 | { |
---|
1045 | char *name; |
---|
1046 | char *proto; |
---|
1047 | int port; |
---|
1048 | struct servent *serv; |
---|
1049 | char *orig_buf; |
---|
1050 | char *p; |
---|
1051 | char **alias; |
---|
1052 | size_t orig_buf_size; |
---|
1053 | int *ret_errno; |
---|
1054 | |
---|
1055 | switch ((enum nss_lookup_type)cache_mdata) { |
---|
1056 | case nss_lt_name: |
---|
1057 | name = va_arg(ap, char *); |
---|
1058 | proto = va_arg(ap, char *); |
---|
1059 | break; |
---|
1060 | case nss_lt_id: |
---|
1061 | port = va_arg(ap, int); |
---|
1062 | proto = va_arg(ap, char *); |
---|
1063 | break; |
---|
1064 | case nss_lt_all: |
---|
1065 | break; |
---|
1066 | default: |
---|
1067 | /* should be unreachable */ |
---|
1068 | return (NS_UNAVAIL); |
---|
1069 | } |
---|
1070 | |
---|
1071 | serv = va_arg(ap, struct servent *); |
---|
1072 | orig_buf = va_arg(ap, char *); |
---|
1073 | orig_buf_size = va_arg(ap, size_t); |
---|
1074 | ret_errno = va_arg(ap, int *); |
---|
1075 | |
---|
1076 | if (orig_buf_size < |
---|
1077 | buffer_size - sizeof(struct servent) - sizeof(char *)) { |
---|
1078 | *ret_errno = ERANGE; |
---|
1079 | return (NS_RETURN); |
---|
1080 | } |
---|
1081 | |
---|
1082 | memcpy(serv, buffer, sizeof(struct servent)); |
---|
1083 | memcpy(&p, buffer + sizeof(struct servent), sizeof(char *)); |
---|
1084 | |
---|
1085 | orig_buf = (char *)_ALIGN(orig_buf); |
---|
1086 | memcpy(orig_buf, buffer + sizeof(struct servent) + sizeof(char *) + |
---|
1087 | (_ALIGN(p) - (size_t)p), |
---|
1088 | buffer_size - sizeof(struct servent) - sizeof(char *) - |
---|
1089 | (_ALIGN(p) - (size_t)p)); |
---|
1090 | p = (char *)_ALIGN(p); |
---|
1091 | |
---|
1092 | NS_APPLY_OFFSET(serv->s_name, orig_buf, p, char *); |
---|
1093 | NS_APPLY_OFFSET(serv->s_proto, orig_buf, p, char *); |
---|
1094 | if (serv->s_aliases != NULL) { |
---|
1095 | NS_APPLY_OFFSET(serv->s_aliases, orig_buf, p, char **); |
---|
1096 | |
---|
1097 | for (alias = serv->s_aliases; *alias; ++alias) |
---|
1098 | NS_APPLY_OFFSET(*alias, orig_buf, p, char *); |
---|
1099 | } |
---|
1100 | |
---|
1101 | if (retval != NULL) |
---|
1102 | *((struct servent **)retval) = serv; |
---|
1103 | return (NS_SUCCESS); |
---|
1104 | } |
---|
1105 | |
---|
1106 | NSS_MP_CACHE_HANDLING(services); |
---|
1107 | #endif /* NS_CACHING */ |
---|
1108 | |
---|
1109 | /* get**_r functions implementation */ |
---|
1110 | int |
---|
1111 | getservbyname_r(const char *name, const char *proto, struct servent *serv, |
---|
1112 | char *buffer, size_t bufsize, struct servent **result) |
---|
1113 | { |
---|
1114 | static const struct servent_mdata mdata = { nss_lt_name, 0 }; |
---|
1115 | static const struct servent_mdata compat_mdata = { nss_lt_name, 1 }; |
---|
1116 | #ifdef NS_CACHING |
---|
1117 | static const nss_cache_info cache_info = |
---|
1118 | NS_COMMON_CACHE_INFO_INITIALIZER( |
---|
1119 | services, (void *)nss_lt_name, |
---|
1120 | serv_id_func, serv_marshal_func, serv_unmarshal_func); |
---|
1121 | #endif /* NS_CACHING */ |
---|
1122 | static const ns_dtab dtab[] = { |
---|
1123 | { NSSRC_FILES, files_servent, (void *)&mdata }, |
---|
1124 | { NSSRC_DB, db_servent, (void *)nss_lt_name }, |
---|
1125 | #ifdef YP |
---|
1126 | { NSSRC_NIS, nis_servent, (void *)nss_lt_name }, |
---|
1127 | #endif |
---|
1128 | { NSSRC_COMPAT, files_servent, (void *)&compat_mdata }, |
---|
1129 | #ifdef NS_CACHING |
---|
1130 | NS_CACHE_CB(&cache_info) |
---|
1131 | #endif |
---|
1132 | { NULL, NULL, NULL } |
---|
1133 | }; |
---|
1134 | int rv, ret_errno; |
---|
1135 | |
---|
1136 | ret_errno = 0; |
---|
1137 | *result = NULL; |
---|
1138 | rv = nsdispatch(result, dtab, NSDB_SERVICES, "getservbyname_r", |
---|
1139 | defaultsrc, name, proto, serv, buffer, bufsize, &ret_errno); |
---|
1140 | |
---|
1141 | if (rv == NS_SUCCESS) |
---|
1142 | return (0); |
---|
1143 | else |
---|
1144 | return (ret_errno); |
---|
1145 | } |
---|
1146 | |
---|
1147 | int |
---|
1148 | getservbyport_r(int port, const char *proto, struct servent *serv, |
---|
1149 | char *buffer, size_t bufsize, struct servent **result) |
---|
1150 | { |
---|
1151 | static const struct servent_mdata mdata = { nss_lt_id, 0 }; |
---|
1152 | static const struct servent_mdata compat_mdata = { nss_lt_id, 1 }; |
---|
1153 | #ifdef NS_CACHING |
---|
1154 | static const nss_cache_info cache_info = |
---|
1155 | NS_COMMON_CACHE_INFO_INITIALIZER( |
---|
1156 | services, (void *)nss_lt_id, |
---|
1157 | serv_id_func, serv_marshal_func, serv_unmarshal_func); |
---|
1158 | #endif |
---|
1159 | static const ns_dtab dtab[] = { |
---|
1160 | { NSSRC_FILES, files_servent, (void *)&mdata }, |
---|
1161 | { NSSRC_DB, db_servent, (void *)nss_lt_id }, |
---|
1162 | #ifdef YP |
---|
1163 | { NSSRC_NIS, nis_servent, (void *)nss_lt_id }, |
---|
1164 | #endif |
---|
1165 | { NSSRC_COMPAT, files_servent, (void *)&compat_mdata }, |
---|
1166 | #ifdef NS_CACHING |
---|
1167 | NS_CACHE_CB(&cache_info) |
---|
1168 | #endif |
---|
1169 | { NULL, NULL, NULL } |
---|
1170 | }; |
---|
1171 | int rv, ret_errno; |
---|
1172 | |
---|
1173 | ret_errno = 0; |
---|
1174 | *result = NULL; |
---|
1175 | rv = nsdispatch(result, dtab, NSDB_SERVICES, "getservbyport_r", |
---|
1176 | defaultsrc, port, proto, serv, buffer, bufsize, &ret_errno); |
---|
1177 | |
---|
1178 | if (rv == NS_SUCCESS) |
---|
1179 | return (0); |
---|
1180 | else |
---|
1181 | return (ret_errno); |
---|
1182 | } |
---|
1183 | |
---|
1184 | int |
---|
1185 | getservent_r(struct servent *serv, char *buffer, size_t bufsize, |
---|
1186 | struct servent **result) |
---|
1187 | { |
---|
1188 | static const struct servent_mdata mdata = { nss_lt_all, 0 }; |
---|
1189 | static const struct servent_mdata compat_mdata = { nss_lt_all, 1 }; |
---|
1190 | #ifdef NS_CACHING |
---|
1191 | static const nss_cache_info cache_info = NS_MP_CACHE_INFO_INITIALIZER( |
---|
1192 | services, (void *)nss_lt_all, |
---|
1193 | serv_marshal_func, serv_unmarshal_func); |
---|
1194 | #endif |
---|
1195 | static const ns_dtab dtab[] = { |
---|
1196 | { NSSRC_FILES, files_servent, (void *)&mdata }, |
---|
1197 | { NSSRC_DB, db_servent, (void *)nss_lt_all }, |
---|
1198 | #ifdef YP |
---|
1199 | { NSSRC_NIS, nis_servent, (void *)nss_lt_all }, |
---|
1200 | #endif |
---|
1201 | { NSSRC_COMPAT, files_servent, (void *)&compat_mdata }, |
---|
1202 | #ifdef NS_CACHING |
---|
1203 | NS_CACHE_CB(&cache_info) |
---|
1204 | #endif |
---|
1205 | { NULL, NULL, NULL } |
---|
1206 | }; |
---|
1207 | int rv, ret_errno; |
---|
1208 | |
---|
1209 | ret_errno = 0; |
---|
1210 | *result = NULL; |
---|
1211 | rv = nsdispatch(result, dtab, NSDB_SERVICES, "getservent_r", |
---|
1212 | defaultsrc, serv, buffer, bufsize, &ret_errno); |
---|
1213 | |
---|
1214 | if (rv == NS_SUCCESS) |
---|
1215 | return (0); |
---|
1216 | else |
---|
1217 | return (ret_errno); |
---|
1218 | } |
---|
1219 | |
---|
1220 | void |
---|
1221 | setservent(int stayopen) |
---|
1222 | { |
---|
1223 | #ifdef NS_CACHING |
---|
1224 | static const nss_cache_info cache_info = NS_MP_CACHE_INFO_INITIALIZER( |
---|
1225 | services, (void *)nss_lt_all, |
---|
1226 | NULL, NULL); |
---|
1227 | #endif |
---|
1228 | static const ns_dtab dtab[] = { |
---|
1229 | { NSSRC_FILES, files_setservent, (void *)SETSERVENT }, |
---|
1230 | { NSSRC_DB, db_setservent, (void *)SETSERVENT }, |
---|
1231 | #ifdef YP |
---|
1232 | { NSSRC_NIS, nis_setservent, (void *)SETSERVENT }, |
---|
1233 | #endif |
---|
1234 | { NSSRC_COMPAT, compat_setservent, (void *)SETSERVENT }, |
---|
1235 | #ifdef NS_CACHING |
---|
1236 | NS_CACHE_CB(&cache_info) |
---|
1237 | #endif |
---|
1238 | { NULL, NULL, NULL } |
---|
1239 | }; |
---|
1240 | |
---|
1241 | (void)nsdispatch(NULL, dtab, NSDB_SERVICES, "setservent", defaultsrc, |
---|
1242 | stayopen); |
---|
1243 | } |
---|
1244 | |
---|
1245 | void |
---|
1246 | endservent() |
---|
1247 | { |
---|
1248 | #ifdef NS_CACHING |
---|
1249 | static const nss_cache_info cache_info = NS_MP_CACHE_INFO_INITIALIZER( |
---|
1250 | services, (void *)nss_lt_all, |
---|
1251 | NULL, NULL); |
---|
1252 | #endif |
---|
1253 | static const ns_dtab dtab[] = { |
---|
1254 | { NSSRC_FILES, files_setservent, (void *)ENDSERVENT }, |
---|
1255 | { NSSRC_DB, db_setservent, (void *)ENDSERVENT }, |
---|
1256 | #ifdef YP |
---|
1257 | { NSSRC_NIS, nis_setservent, (void *)ENDSERVENT }, |
---|
1258 | #endif |
---|
1259 | { NSSRC_COMPAT, compat_setservent, (void *)ENDSERVENT }, |
---|
1260 | #ifdef NS_CACHING |
---|
1261 | NS_CACHE_CB(&cache_info) |
---|
1262 | #endif |
---|
1263 | { NULL, NULL, NULL } |
---|
1264 | }; |
---|
1265 | |
---|
1266 | (void)nsdispatch(NULL, dtab, NSDB_SERVICES, "endservent", defaultsrc); |
---|
1267 | } |
---|
1268 | |
---|
1269 | /* get** wrappers for get**_r functions implementation */ |
---|
1270 | static void |
---|
1271 | servent_endstate(void *p) |
---|
1272 | { |
---|
1273 | if (p == NULL) |
---|
1274 | return; |
---|
1275 | |
---|
1276 | free(((struct servent_state *)p)->buffer); |
---|
1277 | free(p); |
---|
1278 | } |
---|
1279 | |
---|
1280 | static int |
---|
1281 | wrap_getservbyname_r(struct key key, struct servent *serv, char *buffer, |
---|
1282 | size_t bufsize, struct servent **res) |
---|
1283 | { |
---|
1284 | return (getservbyname_r(key.name, key.proto, serv, buffer, bufsize, |
---|
1285 | res)); |
---|
1286 | } |
---|
1287 | |
---|
1288 | static int |
---|
1289 | wrap_getservbyport_r(struct key key, struct servent *serv, char *buffer, |
---|
1290 | size_t bufsize, struct servent **res) |
---|
1291 | { |
---|
1292 | return (getservbyport_r(key.port, key.proto, serv, buffer, bufsize, |
---|
1293 | res)); |
---|
1294 | } |
---|
1295 | |
---|
1296 | static int |
---|
1297 | wrap_getservent_r(struct key key, struct servent *serv, char *buffer, |
---|
1298 | size_t bufsize, struct servent **res) |
---|
1299 | { |
---|
1300 | return (getservent_r(serv, buffer, bufsize, res)); |
---|
1301 | } |
---|
1302 | |
---|
1303 | static struct servent * |
---|
1304 | getserv(int (*fn)(struct key, struct servent *, char *, size_t, |
---|
1305 | struct servent **), struct key key) |
---|
1306 | { |
---|
1307 | int rv; |
---|
1308 | struct servent *res; |
---|
1309 | struct servent_state * st; |
---|
1310 | |
---|
1311 | rv = servent_getstate(&st); |
---|
1312 | if (rv != 0) { |
---|
1313 | errno = rv; |
---|
1314 | return NULL; |
---|
1315 | } |
---|
1316 | |
---|
1317 | if (st->buffer == NULL) { |
---|
1318 | st->buffer = malloc(SERVENT_STORAGE_INITIAL); |
---|
1319 | if (st->buffer == NULL) |
---|
1320 | return (NULL); |
---|
1321 | st->bufsize = SERVENT_STORAGE_INITIAL; |
---|
1322 | } |
---|
1323 | do { |
---|
1324 | rv = fn(key, &st->serv, st->buffer, st->bufsize, &res); |
---|
1325 | if (res == NULL && rv == ERANGE) { |
---|
1326 | free(st->buffer); |
---|
1327 | if ((st->bufsize << 1) > SERVENT_STORAGE_MAX) { |
---|
1328 | st->buffer = NULL; |
---|
1329 | errno = ERANGE; |
---|
1330 | return (NULL); |
---|
1331 | } |
---|
1332 | st->bufsize <<= 1; |
---|
1333 | st->buffer = malloc(st->bufsize); |
---|
1334 | if (st->buffer == NULL) |
---|
1335 | return (NULL); |
---|
1336 | } |
---|
1337 | } while (res == NULL && rv == ERANGE); |
---|
1338 | if (rv != 0) |
---|
1339 | errno = rv; |
---|
1340 | |
---|
1341 | return (res); |
---|
1342 | } |
---|
1343 | |
---|
1344 | struct servent * |
---|
1345 | getservbyname(const char *name, const char *proto) |
---|
1346 | { |
---|
1347 | struct key key; |
---|
1348 | |
---|
1349 | key.name = name; |
---|
1350 | key.proto = proto; |
---|
1351 | |
---|
1352 | return (getserv(wrap_getservbyname_r, key)); |
---|
1353 | } |
---|
1354 | |
---|
1355 | struct servent * |
---|
1356 | getservbyport(int port, const char *proto) |
---|
1357 | { |
---|
1358 | struct key key; |
---|
1359 | |
---|
1360 | key.port = port; |
---|
1361 | key.proto = proto; |
---|
1362 | |
---|
1363 | return (getserv(wrap_getservbyport_r, key)); |
---|
1364 | } |
---|
1365 | |
---|
1366 | struct servent * |
---|
1367 | getservent() |
---|
1368 | { |
---|
1369 | struct key key; |
---|
1370 | |
---|
1371 | key.proto = NULL; |
---|
1372 | key.port = 0; |
---|
1373 | |
---|
1374 | return (getserv(wrap_getservent_r, key)); |
---|
1375 | } |
---|