1 | /* $Id: mr_auth.c,v 1.29 2009-05-04 20:49:11 zacheiss Exp $ |
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2 | * |
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3 | * Handles the client side of the sending of authenticators to the moira server |
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4 | * |
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5 | * Copyright (C) 1987-1998 by the Massachusetts Institute of Technology |
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6 | * For copying and distribution information, please see the file |
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7 | * <mit-copyright.h>. |
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8 | */ |
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9 | |
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10 | #include <mit-copyright.h> |
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11 | #include <moira.h> |
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12 | #include "mr_private.h" |
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13 | |
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14 | #include <ctype.h> |
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15 | #include <stdio.h> |
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16 | #include <string.h> |
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17 | |
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18 | #ifdef HAVE_KRB4 |
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19 | #include <krb.h> |
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20 | #endif |
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21 | #include <krb5.h> |
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22 | |
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23 | krb5_context context = NULL; |
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24 | krb5_auth_context auth_con = NULL; |
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25 | |
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26 | RCSID("$Header: /afs/.athena.mit.edu/astaff/project/moiradev/repository/moira/lib/mr_auth.c,v 1.29 2009-05-04 20:49:11 zacheiss Exp $"); |
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27 | |
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28 | /* Authenticate this client with the Moira server. prog is the name of the |
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29 | * client program, and will be recorded in the database. |
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30 | */ |
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31 | |
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32 | int mr_auth(char *prog) |
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33 | { |
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34 | #ifdef HAVE_KRB4 |
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35 | int status; |
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36 | mr_params params, reply; |
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37 | char *args[2]; |
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38 | int argl[2]; |
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39 | char realm[REALM_SZ], host[BUFSIZ], *p; |
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40 | KTEXT_ST auth; |
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41 | |
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42 | CHECK_CONNECTED; |
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43 | |
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44 | if ((status = mr_host(host, sizeof(host) - 1))) |
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45 | return status; |
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46 | |
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47 | strcpy(realm, krb_realmofhost(host)); |
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48 | for (p = host; *p && *p != '.'; p++) |
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49 | { |
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50 | if (isupper(*p)) |
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51 | *p = tolower(*p); |
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52 | } |
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53 | *p = '\0'; |
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54 | |
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55 | status = krb_mk_req(&auth, MOIRA_SNAME, host, realm, 0); |
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56 | if (status != KSUCCESS) |
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57 | { |
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58 | status += ERROR_TABLE_BASE_krb; |
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59 | return status; |
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60 | } |
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61 | params.u.mr_procno = MR_AUTH; |
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62 | params.mr_argc = 2; |
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63 | params.mr_argv = args; |
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64 | params.mr_argl = argl; |
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65 | params.mr_argv[0] = (char *)auth.dat; |
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66 | params.mr_argl[0] = auth.length; |
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67 | params.mr_argv[1] = prog; |
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68 | params.mr_argl[1] = strlen(prog) + 1; |
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69 | |
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70 | if ((status = mr_do_call(¶ms, &reply)) == MR_SUCCESS) |
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71 | status = reply.u.mr_status; |
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72 | |
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73 | mr_destroy_reply(reply); |
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74 | |
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75 | return status; |
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76 | #else |
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77 | return MR_NO_KRB4; |
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78 | #endif |
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79 | } |
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80 | |
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81 | int mr_proxy(char *principal, char *orig_authtype) |
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82 | { |
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83 | int status; |
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84 | mr_params params, reply; |
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85 | char *args[2]; |
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86 | |
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87 | CHECK_CONNECTED; |
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88 | |
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89 | params.u.mr_procno = MR_PROXY; |
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90 | params.mr_argc = 2; |
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91 | params.mr_argv = args; |
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92 | params.mr_argv[0] = principal; |
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93 | params.mr_argv[1] = orig_authtype; |
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94 | params.mr_argl = NULL; |
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95 | |
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96 | if ((status = mr_do_call(¶ms, &reply)) == MR_SUCCESS) |
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97 | status = reply.u.mr_status; |
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98 | |
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99 | mr_destroy_reply(reply); |
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100 | |
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101 | return status; |
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102 | } |
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103 | |
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104 | int mr_krb5_auth(char *prog) |
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105 | { |
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106 | mr_params params, reply; |
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107 | char host[BUFSIZ], *p; |
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108 | char *args[2]; |
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109 | int argl[2]; |
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110 | krb5_ccache ccache = NULL; |
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111 | krb5_data auth; |
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112 | krb5_error_code problem = 0; |
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113 | |
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114 | CHECK_CONNECTED; |
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115 | |
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116 | memset(&auth, 0, sizeof(auth)); |
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117 | |
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118 | if ((problem = mr_host(host, sizeof(host) - 1))) |
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119 | return problem; |
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120 | |
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121 | if (!context) |
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122 | { |
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123 | problem = krb5_init_context(&context); |
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124 | if (problem) |
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125 | goto out; |
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126 | } |
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127 | |
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128 | problem = krb5_auth_con_init(context, &auth_con); |
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129 | if (problem) |
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130 | goto out; |
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131 | |
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132 | problem = krb5_cc_default(context, &ccache); |
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133 | if (problem) |
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134 | goto out; |
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135 | |
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136 | problem = krb5_mk_req(context, &auth_con, 0, MOIRA_SNAME, host, NULL, |
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137 | ccache, &auth); |
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138 | if (problem) |
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139 | goto out; |
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140 | |
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141 | params.u.mr_procno = MR_KRB5_AUTH; |
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142 | params.mr_argc = 2; |
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143 | params.mr_argv = args; |
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144 | params.mr_argl = argl; |
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145 | params.mr_argv[0] = (char *)auth.data; |
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146 | params.mr_argl[0] = auth.length; |
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147 | params.mr_argv[1] = prog; |
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148 | params.mr_argl[1] = strlen(prog) + 1; |
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149 | |
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150 | if ((problem = mr_do_call(¶ms, &reply)) == MR_SUCCESS) |
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151 | problem = reply.u.mr_status; |
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152 | |
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153 | mr_destroy_reply(reply); |
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154 | |
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155 | out: |
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156 | if (ccache) |
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157 | krb5_cc_close(context, ccache); |
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158 | krb5_free_data_contents(context, &auth); |
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159 | if (auth_con) |
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160 | krb5_auth_con_free(context, auth_con); |
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161 | auth_con = NULL; |
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162 | |
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163 | return problem; |
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164 | } |
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165 | |
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