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1 /*
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2 * Copyright (c) 1985 Regents of the University of California.
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3 * All rights reserved.
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4 *
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5 * Redistribution and use in source and binary forms are permitted
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6 * provided that the above copyright notice and this paragraph are
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7 * duplicated in all such forms and that any documentation,
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8 * advertising materials, and other materials related to such
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9 * distribution and use acknowledge that the software was developed
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10 * by the University of California, Berkeley. The name of the
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11 * University may not be used to endorse or promote products derived
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12 * from this software without specific prior written permission.
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13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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16 */
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17
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18 #ifndef lint
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19 static char sccsid[] = "@(#)ruserpass.c 5.1 (Berkeley) 3/1/89";
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20 #endif /* not lint */
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21
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22 #include <sys/types.h>
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23 #include <sys/stat.h>
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24 #include <stdio.h>
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25 #include <ctype.h>
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26 #include <pwd.h>
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27 #include <errno.h>
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28
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10
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29 // char *malloc(), *index(), *getenv(), *getpass(), *getlogin();
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30 // char *strcpy();
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12
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31 #include <unistd.h>
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32
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10
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33 #include <stdlib.h>
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34 #include <string.h>
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0
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35 static FILE *cfile;
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36
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37 #ifndef MAXHOSTNAMELEN
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38 #define MAXHOSTNAMELEN 64
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39 #endif
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40
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41 #define DEFAULT 1
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42 #define LOGIN 2
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43 #define PASSWD 3
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44 #define ACCOUNT 4
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45 #define MACDEF 5
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46 #define ID 10
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47 #define MACH 11
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48
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49 static int token();
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50 static char tokval[256];
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51
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52 static struct toktab {
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53 char *tokstr;
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54 int tval;
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55 } toktab[]= {
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56 "default", DEFAULT,
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57 "login", LOGIN,
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58 "password", PASSWD,
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59 "passwd", PASSWD,
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60 "account", ACCOUNT,
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61 "machine", MACH,
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62 "macdef", MACDEF,
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63 0, 0
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64 };
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65
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66 ruserpass(host, aname, apass)
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67 char *host, **aname, **apass;
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68 {
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69 char *hdir, buf[BUFSIZ], *tmp;
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70 char myname[MAXHOSTNAMELEN], *mydomain;
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71 int t, i, c, usedefault = 0;
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72 struct stat stb;
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73
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74 hdir = getenv("HOME");
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75 if (hdir == NULL)
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76 hdir = ".";
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77 (void) sprintf(buf, "%s/.netrc", hdir);
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78 cfile = fopen(buf, "r");
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79 if (cfile == NULL) {
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80 if (errno != ENOENT)
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81 perror(buf);
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82 goto done;
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83 }
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84
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85 while ((t = token())) switch(t) {
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86 case DEFAULT:
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87 usedefault = 1;
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88 /* FALL THROUGH */
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89
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90 case MACH:
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91 if (!usedefault) {
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92 if (token() != ID)
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93 continue;
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94 /*
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95 * Allow match either for user's host name.
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96 */
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97 if (uleq(host, tokval))
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98 goto match;
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99 continue;
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100 }
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101 match:
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102 while ((t = token()) && t != MACH && t != DEFAULT) switch(t) {
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103
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104 case LOGIN:
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105 if (token() && *aname == 0) {
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106 *aname = malloc((unsigned) strlen(tokval) + 1);
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107 (void) strcpy(*aname, tokval);
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108 }
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109 break;
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110 case PASSWD:
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111 if (fstat(fileno(cfile), &stb) >= 0 &&
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112 (stb.st_mode & 077) != 0) {
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113 fprintf(stderr, "Error - .netrc file not correct mode.\n");
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114 fprintf(stderr, "Remove password or correct mode.\n");
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115 goto bad;
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116 }
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117 if (token() && *apass == 0) {
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118 *apass = malloc((unsigned) strlen(tokval) + 1);
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119 (void) strcpy(*apass, tokval);
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120 }
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121 break;
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122 case ACCOUNT:
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123 break;
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124
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125 case MACDEF:
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126 goto done_close;
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127 break;
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128 default:
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129 fprintf(stderr, "Unknown .netrc keyword %s\n", tokval);
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130 break;
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131 }
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132 goto done;
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133 }
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134
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135 done_close:
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136 (void) fclose(cfile);
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137
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138 done:
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139 if (!*aname) {
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140 char tmp[80];
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141 char *myname;
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142
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143 if ((myname = getlogin()) == NULL) {
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144 struct passwd *pp;
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145
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146 if ((pp = getpwuid (getuid())) != NULL)
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147 myname = pp->pw_name;
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148 }
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149 printf("Name (%s:%s): ", host, myname ? myname : "");
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150
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151 (void) fgets(tmp, sizeof(tmp) - 1, stdin);
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152 tmp[strlen(tmp) - 1] = '\0';
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153 if (*tmp != '\0') {
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154 myname = tmp;
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155 }
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156
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157 *aname = malloc((unsigned) strlen(myname) + 1);
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158 strcpy (*aname, myname);
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159 }
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160
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161 if (!*apass) {
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162 char prompt[BUFSIZ];
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163 char *mypass;
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164
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165 sprintf(prompt, "Password (%s:%s): ", host, *aname);
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166 mypass = getpass (prompt);
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167
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168 if (*mypass == '\0') {
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169 mypass = *aname;
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170 }
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171
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172 *apass = malloc((unsigned) strlen(mypass) + 1);
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173 strcpy (*apass, mypass);
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174 }
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175
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176 return(0);
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177 bad:
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178 (void) fclose(cfile);
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179 return(-1);
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180 }
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181
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182 static int
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183 token()
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184 {
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185 char *cp;
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186 int c;
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187 struct toktab *t;
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188
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189 if (feof(cfile))
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190 return (0);
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191 while ((c = getc(cfile)) != EOF &&
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192 (c == '\n' || c == '\t' || c == ' ' || c == ','))
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193 continue;
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194 if (c == EOF)
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195 return (0);
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196 cp = tokval;
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197 if (c == '"') {
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198 while ((c = getc(cfile)) != EOF && c != '"') {
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199 if (c == '\\')
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200 c = getc(cfile);
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201 if (cp > tokval + sizeof(tokval) - 2) {
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202 fprintf(stderr, ".netrc keyword too long.\n");
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203 tokval[0] = 0;
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204 return 0;
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205 }
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206 *cp++ = c;
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207 }
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208 } else {
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209 *cp++ = c;
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210 while ((c = getc(cfile)) != EOF
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211 && c != '\n' && c != '\t' && c != ' ' && c != ',') {
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212 if (c == '\\')
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213 c = getc(cfile);
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214 if (cp > tokval + sizeof(tokval) - 2) {
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215 fprintf(stderr, ".netrc keyword too long.\n");
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216 tokval[0] = 0;
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217 return 0;
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218 }
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219 *cp++ = c;
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220 }
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221 }
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222 *cp = 0;
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223 if (tokval[0] == 0)
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224 return (0);
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225 for (t = toktab; t->tokstr; t++)
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226 if (!strcmp(t->tokstr, tokval))
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227 return (t->tval);
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228 return (ID);
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229 }
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