1 | |
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2 | /*********************************************************** |
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3 | abac_param.c |
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4 | |
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5 | dterm=data term of rt1 |
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6 | param is a kind of dterm |
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7 | ***********************************************************/ |
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8 | #include <assert.h> |
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9 | #include <stdlib.h> |
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10 | #include <stdio.h> |
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11 | #include <string.h> |
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12 | #include <ctype.h> |
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13 | #include <time.h> |
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14 | |
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15 | #include "abac_list.h" |
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16 | #include "abac_util.h" |
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17 | |
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18 | #include "abac_pl.h" |
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19 | |
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20 | typedef enum _termtype { |
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21 | e_TERM_INTEGER = 1, |
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22 | e_TERM_URN = 2, |
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23 | e_TERM_FLOAT = 3, |
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24 | e_TERM_BOOLEAN = 4, |
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25 | e_TERM_STRING = 5, |
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26 | e_TERM_TIME = 6, |
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27 | e_TERM_PRINCIPAL = 7, |
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28 | e_TERM_ANONYMOUS = 8 |
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29 | } termtype_t; |
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30 | |
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31 | /* termname[dtermtype] */ |
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32 | static char *const termname[] = |
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33 | { |
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34 | "badterm", |
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35 | "integer", |
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36 | "urn", |
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37 | "float", |
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38 | "boolean", |
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39 | "string", |
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40 | "time" , |
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41 | "principal", |
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42 | "anonymous", |
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43 | 0 |
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44 | }; |
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45 | static int termname_cnt=8; |
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46 | |
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47 | typedef enum _condtype_t { |
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48 | e_COND_ROLE = 1, |
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49 | e_COND_OSET = 2, |
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50 | e_COND_RANGE = 3, |
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51 | } condtype_t; |
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52 | |
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53 | /* string will contain either |
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54 | the range literal (static constraint) |
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55 | or |
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56 | the oset/role prologized string (dynamic constraint) |
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57 | union ptr will only be set if it is a dynamic |
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58 | constraint */ |
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59 | struct _abac_condition_t { |
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60 | int type; |
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61 | char *string; |
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62 | union { |
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63 | abac_role_t *of_role; |
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64 | abac_oset_t *of_oset; |
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65 | }; |
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66 | }; |
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67 | |
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68 | struct _abac_term_t { |
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69 | int type; |
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70 | char *name; |
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71 | char *cn; |
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72 | abac_condition_t *constraint; |
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73 | }; |
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74 | |
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75 | /* new, free, add one */ |
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76 | struct _abac_param_list_t { |
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77 | abac_list_t *list; |
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78 | }; |
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79 | |
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80 | |
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81 | /******************************************************************/ |
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82 | static abac_condition_t *abac_condition_new(int type,char* condstr,void *cptr) |
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83 | { |
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84 | abac_condition_t *ptr= |
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85 | (abac_condition_t *)abac_xmalloc(sizeof(abac_condition_t)); |
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86 | ptr->type=type; |
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87 | ptr->string=strdup(condstr); |
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88 | ptr->of_role=cptr; |
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89 | return ptr; |
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90 | } |
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91 | |
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92 | static void abac_condition_free(abac_condition_t *ptr) |
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93 | { |
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94 | switch(ptr->type) { |
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95 | case e_COND_OSET: |
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96 | abac_oset_free(ptr->of_oset); |
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97 | break; |
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98 | case e_COND_ROLE: |
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99 | abac_role_free(ptr->of_role); |
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100 | break; |
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101 | case e_COND_RANGE: |
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102 | /* do nothing */ |
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103 | break; |
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104 | } |
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105 | if(ptr->string) free(ptr->string); |
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106 | free(ptr); |
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107 | } |
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108 | |
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109 | /* made a copy */ |
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110 | char *abac_condition_string(abac_condition_t *ptr) |
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111 | { |
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112 | char *string=NULL; |
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113 | switch(ptr->type) { |
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114 | case e_COND_OSET: |
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115 | string=abac_oset_string_with_condition(ptr->of_oset); |
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116 | break; |
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117 | case e_COND_ROLE: |
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118 | string=abac_role_string_with_condition(ptr->of_role); |
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119 | break; |
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120 | case e_COND_RANGE: |
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121 | string=strdup(ptr->string); |
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122 | break; |
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123 | } |
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124 | return string; |
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125 | } |
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126 | |
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127 | |
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128 | /******************************************************************/ |
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129 | |
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130 | char *abac_term_name(abac_term_t *term) |
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131 | { |
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132 | return term->name; |
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133 | } |
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134 | |
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135 | char *abac_term_cn(abac_term_t *term) |
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136 | { |
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137 | return term->cn; |
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138 | } |
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139 | |
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140 | abac_condition_t *abac_term_constraint(abac_term_t *term) |
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141 | { |
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142 | return term->constraint; |
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143 | } |
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144 | |
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145 | char *abac_term_type(int i) |
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146 | { |
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147 | return termname[i]; |
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148 | } |
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149 | |
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150 | int abac_term_is_time_type(int i) |
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151 | { |
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152 | if (i == e_TERM_TIME) |
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153 | return 1; |
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154 | return 0; |
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155 | } |
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156 | |
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157 | int abac_term_is_string_type(int i) |
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158 | { |
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159 | if (i == e_TERM_STRING) |
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160 | return 1; |
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161 | return 0; |
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162 | } |
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163 | |
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164 | int abac_term_is_integer_type(int i) |
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165 | { |
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166 | if (i == e_TERM_INTEGER) |
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167 | return 1; |
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168 | return 0; |
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169 | } |
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170 | |
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171 | int abac_term_is_urn_type(int i) |
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172 | { |
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173 | if (i == e_TERM_URN) |
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174 | return 1; |
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175 | return 0; |
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176 | } |
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177 | |
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178 | int abac_term_verify_term_type(char *type) { |
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179 | int i; |
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180 | |
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181 | if (type == NULL) |
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182 | return 0; |
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183 | |
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184 | for (i = 1; i <= termname_cnt ; i++) |
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185 | if(strcmp(type,termname[i])==0) |
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186 | return i; |
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187 | return 0; |
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188 | } |
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189 | |
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190 | char *abac_term_to_time(char *string) |
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191 | { |
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192 | struct tm tm1; |
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193 | char buf[255]; |
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194 | |
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195 | strptime(string, "%Y%m%dT%H%M%S", &tm1); |
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196 | strftime(buf, sizeof(buf), "time(%Y,%m,%d,%H,%M,%S)", &tm1); |
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197 | return strdup(buf); |
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198 | } |
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199 | |
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200 | abac_term_t *abac_term_new(int type, char *name, char *cond, void *cptr) |
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201 | { |
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202 | abac_condition_t *constraint=NULL; |
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203 | if (cond) { |
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204 | if(type==e_TERM_PRINCIPAL) { |
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205 | constraint=abac_condition_new(e_COND_ROLE,cond,cptr); |
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206 | } else { |
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207 | if(cptr == NULL) |
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208 | constraint=abac_condition_new(e_COND_RANGE,cond,NULL); |
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209 | else |
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210 | constraint=abac_condition_new(e_COND_OSET,cond,cptr); |
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211 | } |
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212 | } |
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213 | abac_term_t *ptr=abac_xmalloc(sizeof(abac_term_t)); |
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214 | ptr->type=type; |
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215 | /* reformat the term name if it is a time type */ |
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216 | if((!constraint) && abac_term_is_time_type(type) && isdigit(name[0])) { |
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217 | char *tmp=abac_term_to_time(name); |
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218 | ptr->name=tmp; |
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219 | } else { |
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220 | ptr->name=strdup(name); |
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221 | } |
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222 | ptr->constraint=constraint; |
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223 | return ptr; |
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224 | } |
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225 | |
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226 | void abac_term_free(abac_term_t *ptr) |
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227 | { |
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228 | if(ptr->constraint) { |
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229 | abac_condition_free(ptr->constraint); |
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230 | } |
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231 | free(ptr->name); |
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232 | free(ptr); |
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233 | } |
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234 | |
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235 | abac_term_t *abac_term_add_constraint(abac_term_t *ptr, abac_condition_t *cond) |
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236 | { |
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237 | if(ptr->constraint) { |
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238 | abac_condition_free(ptr->constraint); |
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239 | } |
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240 | ptr->constraint = cond; |
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241 | return ptr; |
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242 | } |
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243 | |
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244 | /* name or name:cond */ |
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245 | static char *abac_term_string_with_condition(abac_term_t *ptr) |
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246 | { |
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247 | char *tmp=NULL; |
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248 | char *cond=NULL; |
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249 | char *name=ptr->name; |
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250 | int len=strlen(name)+1; |
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251 | if(ptr->constraint) { |
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252 | cond=abac_condition_string(ptr->constraint); |
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253 | len=len+strlen(cond)+1; |
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254 | } |
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255 | tmp = abac_xmalloc(len); |
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256 | if(cond) { |
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257 | sprintf(tmp,"%s:%s", name, cond); |
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258 | free(cond); |
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259 | } else |
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260 | sprintf(tmp,"%s", name); |
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261 | return tmp; |
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262 | } |
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263 | |
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264 | /* len of name or name:cond */ |
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265 | static int abac_term_len_with_condition(abac_term_t *ptr) |
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266 | { |
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267 | char *cond=NULL; |
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268 | char *name=ptr->name; |
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269 | int len=strlen(name); |
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270 | if(ptr->constraint) { |
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271 | cond=abac_condition_string(ptr->constraint); |
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272 | len=len+strlen(cond)+1; |
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273 | free(cond); |
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274 | } |
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275 | return len; |
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276 | } |
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277 | |
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278 | /* just name */ |
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279 | static char *abac_term_string(abac_term_t *ptr) |
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280 | { |
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281 | return strdup(ptr->name); |
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282 | } |
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283 | |
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284 | /* just len of name */ |
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285 | static int abac_term_len(abac_term_t *ptr) |
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286 | { |
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287 | /* including the 2 's */ |
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288 | if(ptr->type == abac_term_verify_term_type("urn") || |
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289 | ptr->type == abac_term_verify_term_type("string") ) { |
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290 | return strlen(ptr->name)+2; |
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291 | } |
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292 | return strlen(ptr->name); |
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293 | } |
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294 | |
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295 | /********************************************************************/ |
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296 | abac_param_list_t *abac_param_list_new(abac_term_t *term) |
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297 | { |
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298 | abac_param_list_t *ptr=abac_xmalloc(sizeof(abac_param_list_t)); |
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299 | ptr->list=abac_list_new(); |
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300 | abac_list_add(ptr->list, term); |
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301 | return ptr; |
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302 | } |
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303 | |
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304 | abac_param_list_t *abac_param_list_free(abac_param_list_t *ptr) |
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305 | { |
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306 | abac_list_t *list=ptr->list; |
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307 | abac_term_t *cur; |
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308 | abac_list_foreach(list, cur, |
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309 | abac_term_free(cur); |
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310 | ); |
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311 | abac_list_free(list); |
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312 | free(ptr); |
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313 | } |
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314 | |
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315 | abac_param_list_t *abac_param_list_add_term(abac_param_list_t *ptr, abac_term_t *term) |
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316 | { |
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317 | abac_list_t *list=ptr->list; |
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318 | abac_list_add(list, term); |
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319 | return ptr; |
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320 | } |
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321 | |
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322 | |
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323 | /* param1:cond1,param2:cond2 */ |
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324 | char* abac_param_list_string_with_condition(abac_param_list_t *ptr) |
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325 | { |
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326 | if(ptr->list == NULL) |
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327 | return ""; |
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328 | |
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329 | abac_term_t *cur; |
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330 | char *tmp; |
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331 | int len=0; |
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332 | /* collect up all the lens so can allocate once */ |
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333 | abac_list_foreach(ptr->list, cur, |
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334 | int l=abac_term_len_with_condition(cur); |
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335 | len=len+l+1; |
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336 | ); |
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337 | tmp=abac_xmalloc((len+1) * sizeof(char)); |
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338 | /* collect up all the string */ |
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339 | int first=1; |
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340 | abac_list_foreach(ptr->list, cur, |
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341 | char *s=abac_term_string_with_condition(cur); |
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342 | if(first) { |
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343 | strcpy(tmp,s); |
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344 | first=0; |
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345 | } else { |
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346 | strcat(tmp,","); |
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347 | strcat(tmp,s); |
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348 | } |
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349 | free(s); |
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350 | ); |
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351 | return tmp; |
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352 | } |
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353 | |
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354 | /* param1,param2 */ |
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355 | char* abac_param_list_string(abac_param_list_t *ptr) |
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356 | { |
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357 | abac_list_t *list=ptr->list; |
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358 | if(list == NULL) |
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359 | return ""; |
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360 | abac_term_t *cur; |
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361 | char *tmp; |
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362 | int len=0; |
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363 | /* collect up all the lens so can allocate once */ |
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364 | abac_list_foreach(list, cur, |
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365 | // collect up the len |
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366 | int l=abac_term_len(cur); |
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367 | len=len+l+1; |
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368 | ); |
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369 | tmp=abac_xmalloc((len+1) * sizeof(char)); |
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370 | /* collect up all the string */ |
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371 | int first=1; |
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372 | abac_list_foreach(list, cur, |
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373 | char *s=abac_term_string(cur); |
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374 | if(first) { |
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375 | strcpy(tmp,s); |
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376 | first=0; |
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377 | } else { |
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378 | strcat(tmp,","); |
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379 | strcat(tmp,s); |
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380 | } |
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381 | free(s); |
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382 | ); |
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383 | return tmp; |
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384 | } |
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385 | |
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386 | |
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