1 | /* |
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2 | * Sun RPC is a product of Sun Microsystems, Inc. and is provided for |
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3 | * unrestricted use provided that this legend is included on all tape |
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4 | * media and as a part of the software program in whole or part. Users |
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5 | * may copy or modify Sun RPC without charge, but are not authorized |
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6 | * to license or distribute it to anyone else except as part of a product or |
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7 | * program developed by the user or with the express written consent of |
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8 | * Sun Microsystems, Inc. |
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9 | * |
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10 | * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE |
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11 | * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR |
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12 | * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. |
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13 | * |
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14 | * Sun RPC is provided with no support and without any obligation on the |
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15 | * part of Sun Microsystems, Inc. to assist in its use, correction, |
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16 | * modification or enhancement. |
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17 | * |
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18 | * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE |
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19 | * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC |
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20 | * OR ANY PART THEREOF. |
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21 | * |
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22 | * In no event will Sun Microsystems, Inc. be liable for any lost revenue |
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23 | * or profits or other special, indirect and consequential damages, even if |
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24 | * Sun has been advised of the possibility of such damages. |
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25 | * |
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26 | * Sun Microsystems, Inc. |
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27 | * 2550 Garcia Avenue |
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28 | * Mountain View, California 94043 |
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29 | */ |
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30 | |
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31 | #if defined(LIBC_SCCS) && !defined(lint) |
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32 | /*static char *sccsid = "from: @(#)getrpcent.c 1.14 91/03/11 Copyr 1984 Sun Micro";*/ |
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33 | static char *rcsid = "$FreeBSD: src/lib/libc/rpc/getrpcent.c,v 1.10 1999/08/28 00:00:39 peter Exp $"; |
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34 | #endif |
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35 | |
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36 | /* |
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37 | * Copyright (c) 1984 by Sun Microsystems, Inc. |
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38 | */ |
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39 | |
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40 | #ifdef HAVE_CONFIG_H |
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41 | #include "config.h" |
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42 | #endif |
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43 | |
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44 | #include <stdio.h> |
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45 | #include <stdlib.h> |
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46 | #include <sys/types.h> |
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47 | #include <string.h> |
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48 | #include <rpc/rpc.h> |
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49 | #ifdef YP |
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50 | #include <rpcsvc/yp_prot.h> |
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51 | #include <rpcsvc/ypclnt.h> |
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52 | #endif |
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53 | |
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54 | /* |
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55 | * Internet version. |
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56 | */ |
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57 | struct rpcdata { |
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58 | FILE *rpcf; |
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59 | int stayopen; |
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60 | #define MAXALIASES 35 |
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61 | char *rpc_aliases[MAXALIASES]; |
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62 | struct rpcent rpc; |
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63 | char line[BUFSIZ+1]; |
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64 | #ifdef YP |
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65 | char *domain; |
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66 | char *current; |
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67 | int currentlen; |
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68 | #endif |
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69 | } *rpcdata; |
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70 | |
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71 | #ifdef YP |
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72 | static int __yp_nomap = 0; |
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73 | extern int _yp_check(char **); |
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74 | #endif /* YP */ |
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75 | |
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76 | static struct rpcent *interpret(char *val, int len); |
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77 | |
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78 | static char RPCDB[] = "/etc/rpc"; |
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79 | |
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80 | static struct rpcdata * |
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81 | _rpcdata(void) |
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82 | { |
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83 | register struct rpcdata *d = rpcdata; |
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84 | |
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85 | if (d == 0) { |
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86 | d = (struct rpcdata *)calloc(1, sizeof (struct rpcdata)); |
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87 | rpcdata = d; |
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88 | } |
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89 | return (d); |
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90 | } |
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91 | |
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92 | struct rpcent * |
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93 | getrpcbynumber(int number) |
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94 | { |
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95 | register struct rpcdata *d = _rpcdata(); |
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96 | register struct rpcent *p; |
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97 | #ifdef YP |
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98 | int reason; |
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99 | char adrstr[16]; |
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100 | #endif |
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101 | |
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102 | if (d == 0) |
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103 | return (0); |
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104 | #ifdef YP |
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105 | if (!__yp_nomap && _yp_check(&d->domain)) { |
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106 | sprintf(adrstr, "%d", number); |
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107 | reason = yp_match(d->domain, "rpc.bynumber", adrstr, strlen(adrstr), |
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108 | &d->current, &d->currentlen); |
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109 | switch(reason) { |
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110 | case 0: |
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111 | break; |
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112 | case YPERR_MAP: |
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113 | __yp_nomap = 1; |
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114 | goto no_yp; |
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115 | break; |
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116 | default: |
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117 | return(0); |
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118 | break; |
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119 | } |
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120 | d->current[d->currentlen] = '\0'; |
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121 | p = interpret(d->current, d->currentlen); |
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122 | (void) free(d->current); |
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123 | return p; |
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124 | } |
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125 | no_yp: |
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126 | #endif /* YP */ |
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127 | setrpcent(0); |
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128 | while ((p = getrpcent())) { |
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129 | if (p->r_number == number) |
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130 | break; |
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131 | } |
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132 | endrpcent(); |
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133 | return (p); |
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134 | } |
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135 | |
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136 | struct rpcent * |
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137 | getrpcbyname(char *name) |
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138 | { |
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139 | struct rpcent *rpc = NULL; |
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140 | char **rp; |
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141 | |
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142 | setrpcent(0); |
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143 | while ((rpc = getrpcent())) { |
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144 | if (strcmp(rpc->r_name, name) == 0) |
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145 | goto done; |
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146 | for (rp = rpc->r_aliases; *rp != NULL; rp++) { |
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147 | if (strcmp(*rp, name) == 0) |
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148 | goto done; |
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149 | } |
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150 | } |
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151 | done: |
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152 | endrpcent(); |
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153 | return (rpc); |
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154 | } |
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155 | |
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156 | void |
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157 | setrpcent(int f) |
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158 | { |
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159 | register struct rpcdata *d = _rpcdata(); |
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160 | |
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161 | if (d == 0) |
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162 | return; |
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163 | #ifdef YP |
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164 | if (!__yp_nomap && _yp_check(NULL)) { |
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165 | if (d->current) |
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166 | free(d->current); |
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167 | d->current = NULL; |
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168 | d->currentlen = 0; |
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169 | return; |
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170 | } |
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171 | __yp_nomap = 0; |
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172 | #endif /* YP */ |
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173 | if (d->rpcf == NULL) |
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174 | d->rpcf = fopen(RPCDB, "r"); |
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175 | else |
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176 | rewind(d->rpcf); |
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177 | d->stayopen |= f; |
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178 | } |
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179 | |
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180 | void |
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181 | endrpcent(void) |
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182 | { |
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183 | register struct rpcdata *d = _rpcdata(); |
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184 | |
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185 | if (d == 0) |
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186 | return; |
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187 | #ifdef YP |
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188 | if (!__yp_nomap && _yp_check(NULL)) { |
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189 | if (d->current && !d->stayopen) |
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190 | free(d->current); |
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191 | d->current = NULL; |
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192 | d->currentlen = 0; |
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193 | return; |
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194 | } |
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195 | __yp_nomap = 0; |
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196 | #endif /* YP */ |
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197 | if (d->rpcf && !d->stayopen) { |
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198 | fclose(d->rpcf); |
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199 | d->rpcf = NULL; |
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200 | } |
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201 | } |
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202 | |
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203 | struct rpcent * |
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204 | getrpcent(void) |
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205 | { |
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206 | register struct rpcdata *d = _rpcdata(); |
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207 | #ifdef YP |
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208 | struct rpcent *hp; |
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209 | int reason; |
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210 | char *val = NULL; |
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211 | int vallen; |
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212 | #endif |
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213 | |
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214 | if (d == 0) |
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215 | return(NULL); |
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216 | #ifdef YP |
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217 | if (!__yp_nomap && _yp_check(&d->domain)) { |
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218 | if (d->current == NULL && d->currentlen == 0) { |
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219 | reason = yp_first(d->domain, "rpc.bynumber", |
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220 | &d->current, &d->currentlen, |
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221 | &val, &vallen); |
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222 | } else { |
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223 | reason = yp_next(d->domain, "rpc.bynumber", |
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224 | d->current, d->currentlen, |
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225 | &d->current, &d->currentlen, |
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226 | &val, &vallen); |
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227 | } |
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228 | switch(reason) { |
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229 | case 0: |
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230 | break; |
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231 | case YPERR_MAP: |
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232 | __yp_nomap = 1; |
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233 | goto no_yp; |
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234 | break; |
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235 | default: |
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236 | return(0); |
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237 | break; |
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238 | } |
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239 | val[vallen] = '\0'; |
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240 | hp = interpret(val, vallen); |
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241 | (void) free(val); |
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242 | return hp; |
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243 | } |
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244 | no_yp: |
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245 | #endif /* YP */ |
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246 | if (d->rpcf == NULL && (d->rpcf = fopen(RPCDB, "r")) == NULL) |
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247 | return (NULL); |
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248 | /* -1 so there is room to append a \n below */ |
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249 | if (fgets(d->line, BUFSIZ - 1, d->rpcf) == NULL) |
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250 | return (NULL); |
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251 | return (interpret(d->line, strlen(d->line))); |
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252 | } |
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253 | |
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254 | static struct rpcent * |
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255 | interpret( |
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256 | char *val, |
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257 | int len) |
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258 | { |
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259 | register struct rpcdata *d = _rpcdata(); |
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260 | char *p; |
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261 | register char *cp, **q; |
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262 | |
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263 | if (d == 0) |
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264 | return (0); |
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265 | (void) strncpy(d->line, val, BUFSIZ); |
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266 | d->line[BUFSIZ] = '\0'; |
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267 | p = d->line; |
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268 | p[len] = '\n'; |
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269 | if (*p == '#') |
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270 | return (getrpcent()); |
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271 | cp = strpbrk(p, "#\n"); |
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272 | if (cp == NULL) |
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273 | return (getrpcent()); |
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274 | *cp = '\0'; |
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275 | cp = strpbrk(p, " \t"); |
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276 | if (cp == NULL) |
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277 | return (getrpcent()); |
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278 | *cp++ = '\0'; |
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279 | /* THIS STUFF IS INTERNET SPECIFIC */ |
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280 | d->rpc.r_name = d->line; |
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281 | while (*cp == ' ' || *cp == '\t') |
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282 | cp++; |
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283 | d->rpc.r_number = atoi(cp); |
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284 | q = d->rpc.r_aliases = d->rpc_aliases; |
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285 | cp = strpbrk(cp, " \t"); |
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286 | if (cp != NULL) |
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287 | *cp++ = '\0'; |
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288 | while (cp && *cp) { |
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289 | if (*cp == ' ' || *cp == '\t') { |
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290 | cp++; |
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291 | continue; |
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292 | } |
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293 | if (q < &(d->rpc_aliases[MAXALIASES - 1])) |
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294 | *q++ = cp; |
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295 | cp = strpbrk(cp, " \t"); |
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296 | if (cp != NULL) |
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297 | *cp++ = '\0'; |
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298 | } |
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299 | *q = NULL; |
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300 | return (&d->rpc); |
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301 | } |
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