1 | #ifndef __ABAC_HH__ |
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2 | #define __ABAC_HH__ |
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3 | |
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4 | #include <cstdio> |
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5 | #include <stdexcept> |
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6 | #include <string> |
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7 | #include <vector> |
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8 | |
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9 | namespace ABAC { |
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10 | extern "C" { |
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11 | #include "abac.h" |
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12 | } |
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13 | |
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14 | class Attribute; |
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15 | class ID; |
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16 | |
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17 | class Role { |
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18 | public: |
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19 | Role() : m_role(NULL) { } // do not use: here for swig |
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20 | Role(abac_role_t *role) { m_role = abac_role_dup(role); } |
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21 | Role(char *role_name) { m_role = abac_role_from_string(role_name); } |
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22 | Role(const Role &role) { m_role = abac_role_dup(role.m_role); } |
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23 | ~Role() { abac_role_free(m_role); } |
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24 | bool is_principal() const { return abac_role_is_principal(m_role); } |
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25 | bool is_role() const { return abac_role_is_role(m_role); } |
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26 | bool is_linking() const { return abac_role_is_linking(m_role); } |
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27 | |
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28 | char *string() const { return abac_role_string(m_role); } |
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29 | char *linked_role() const { return abac_role_linked_role(m_role); } |
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30 | char *role_name() const { return abac_role_role_name(m_role); } |
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31 | char *principal() const { return abac_role_principal(m_role); } |
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32 | |
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33 | private: |
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34 | abac_role_t *m_role; |
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35 | }; |
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36 | |
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37 | class Credential { |
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38 | public: |
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39 | Credential() : m_cred(NULL) { } // do not use: here for swig |
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40 | Credential(abac_credential_t *cred) : |
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41 | m_head(abac_credential_head(cred)), |
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42 | m_tail(abac_credential_tail(cred)), |
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43 | m_cred(abac_credential_dup(cred)) |
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44 | { } |
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45 | Credential(const Credential &cred) : |
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46 | m_head(cred.m_head), |
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47 | m_tail(cred.m_tail), |
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48 | m_cred(abac_credential_dup(cred.m_cred)) |
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49 | { } |
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50 | ~Credential() { abac_credential_free(m_cred); } |
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51 | const Role &head() { return m_head; } |
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52 | const Role &tail() { return m_tail; } |
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53 | abac_chunk_t attribute_cert() { return abac_credential_attribute_cert(m_cred); } |
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54 | abac_chunk_t issuer_cert() { return abac_credential_issuer_cert(m_cred); } |
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55 | |
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56 | private: |
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57 | abac_credential_t *m_cred; |
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58 | Role m_head, m_tail; |
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59 | }; |
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60 | |
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61 | class Context { |
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62 | public: |
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63 | Context() { m_ctx = abac_context_new(); } |
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64 | Context(const Context &context) { m_ctx = abac_context_dup(context.m_ctx); } |
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65 | ~Context() { abac_context_free(m_ctx); } |
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66 | |
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67 | int load_id_file(char *filename) { return abac_context_load_id_file(m_ctx, filename); } |
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68 | int load_id_chunk(abac_chunk_t cert) { return abac_context_load_id_chunk(m_ctx, cert); } |
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69 | int load_attribute_file(char *filename) { return abac_context_load_attribute_file(m_ctx, filename); } |
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70 | int load_attribute_chunk(abac_chunk_t cert) { return abac_context_load_attribute_chunk(m_ctx, cert); } |
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71 | |
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72 | void load_directory(char *path) { abac_context_load_directory(m_ctx, path); } |
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73 | |
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74 | |
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75 | /* abac query, returns a vector of credentials on success, NULL on fail */ |
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76 | std::vector<Credential> query(char *role, char *principal, bool &success) { |
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77 | abac_credential_t **creds, **end; |
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78 | int i, success_int; |
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79 | creds = abac_context_query(m_ctx, role, principal, &success_int); |
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80 | success = success_int; |
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81 | |
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82 | for (i = 0; creds[i] != NULL; ++i) |
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83 | ; |
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84 | |
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85 | end = &creds[i]; |
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86 | std::vector<Credential> credentials = std::vector<Credential>(creds, end); |
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87 | abac_context_credentials_free(creds); |
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88 | return credentials; |
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89 | } |
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90 | std::vector<Credential> credentials() { |
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91 | abac_credential_t **creds, **end; |
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92 | int i; |
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93 | |
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94 | creds = abac_context_credentials(m_ctx); |
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95 | for (i = 0; creds[i] != NULL; ++i) |
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96 | ; |
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97 | |
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98 | end = &creds[i]; |
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99 | std::vector<Credential> credentials = std::vector<Credential>(creds, end); |
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100 | |
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101 | abac_context_credentials_free(creds); |
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102 | return credentials; |
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103 | } |
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104 | |
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105 | private: |
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106 | abac_context_t *m_ctx; |
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107 | }; |
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108 | |
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109 | class ID { |
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110 | public: |
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111 | ID() : m_id(NULL) { } // do not use: required by swig |
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112 | ID(const ID &id) { m_id = abac_id_dup(id.m_id); } |
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113 | ~ID() { abac_id_free(m_id); } |
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114 | |
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115 | ID(char *filename) : m_id(NULL) { |
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116 | m_id = abac_id_from_file(filename); |
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117 | if (m_id == NULL) |
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118 | throw std::invalid_argument("Could not load ID cert"); |
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119 | } |
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120 | |
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121 | ID(abac_chunk_t chunk) : m_id(NULL) { |
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122 | m_id = abac_id_from_chunk(chunk); |
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123 | if (m_id == NULL) |
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124 | throw std::invalid_argument("Could not load ID certificate with a chunk"); |
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125 | } |
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126 | ID(char *cn, int validity) : m_id(NULL) { |
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127 | int ret = abac_id_generate(&m_id, cn, validity); |
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128 | if (ret == ABAC_GENERATE_INVALID_CN) |
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129 | throw std::invalid_argument("CN must be alphanumeric and start with a letter"); |
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130 | if (ret == ABAC_GENERATE_INVALID_VALIDITY) |
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131 | throw std::invalid_argument("Validity must be > 0 days"); |
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132 | } |
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133 | void load_privkey(char *filename) { |
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134 | int ret = abac_id_privkey_from_file(m_id, filename); |
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135 | if (ret != ABAC_SUCCESS) |
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136 | throw std::invalid_argument("Could not load private key"); |
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137 | } |
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138 | void load_privkey_chunk(abac_chunk_t chunk) { |
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139 | int ret = abac_id_privkey_from_chunk(m_id, chunk); |
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140 | if (ret != ABAC_SUCCESS) |
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141 | throw std::invalid_argument("Could not load private key with a chunk"); |
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142 | } |
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143 | int has_privkey() { |
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144 | int ret= abac_id_has_privkey(m_id); |
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145 | return ret; |
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146 | } |
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147 | char *keyid() { return abac_id_keyid(m_id); } |
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148 | char *cert_filename() { return abac_id_cert_filename(m_id); } |
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149 | void write_cert(FILE *out) { abac_id_write_cert(m_id, out); } |
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150 | void write_cert(const std::string &name) { |
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151 | FILE *out = fopen(name.c_str(), "a+"); |
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152 | if (out == NULL) |
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153 | throw std::invalid_argument("Could not open certificate file for writing"); |
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154 | write_cert(out); |
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155 | fclose(out); |
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156 | } |
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157 | // Simplifies access from swig |
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158 | void write_cert_file(const char *n) { |
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159 | write_cert(std::string(n)); |
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160 | } |
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161 | void write_cert_name(const char *n) { |
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162 | write_cert(std::string(n)); |
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163 | fprintf(stderr,"ABAC::ID::write_cert_name is deprecated, please use ABAC::ID::write_cert_name\n"); |
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164 | } |
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165 | char *privkey_filename() { return abac_id_privkey_filename(m_id); } |
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166 | void write_privkey(FILE *out) { |
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167 | int ret = abac_id_write_privkey(m_id, out); |
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168 | if (ret!=ABAC_SUCCESS) throw std::logic_error("No private key loaded"); |
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169 | } |
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170 | void write_privkey(const std::string &name) { |
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171 | FILE *out = fopen(name.c_str(), "a+"); |
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172 | if (out == NULL) |
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173 | throw std::invalid_argument("Could not open privkey file for writing"); |
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174 | write_privkey(out); |
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175 | fclose(out); |
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176 | } |
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177 | // Simplifies access from swig |
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178 | void write_privkey_file(const char *name) { |
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179 | write_privkey(std::string(name)); |
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180 | } |
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181 | void write_privkey_name(const char *name) { |
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182 | write_privkey(std::string(name)); |
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183 | fprintf(stderr,"ABAC::ID::write_privkey_name is deprecated, please use ABAC::ID::write_privkey_file\n"); |
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184 | } |
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185 | abac_chunk_t cert_chunk() { return abac_id_cert_chunk(m_id); } |
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186 | abac_chunk_t privkey_chunk() { return abac_id_privkey_chunk(m_id); } |
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187 | |
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188 | friend class Attribute; |
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189 | |
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190 | private: |
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191 | abac_id_t *m_id; |
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192 | }; |
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193 | |
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194 | class Attribute { |
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195 | public: |
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196 | Attribute() : m_attr(NULL) { } // do not use: required by swig |
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197 | ~Attribute() { abac_attribute_free(m_attr); } |
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198 | |
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199 | Attribute(ID &issuer, char *role, int validity) : m_attr(NULL) { |
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200 | int ret = abac_attribute_create(&m_attr, issuer.m_id, role, validity); |
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201 | if (ret == ABAC_ATTRIBUTE_ISSUER_NOKEY) |
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202 | throw std::invalid_argument("Issuer has no private key"); |
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203 | if (ret == ABAC_ATTRIBUTE_INVALID_ROLE) |
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204 | throw std::invalid_argument("Role name must be alphanumeric"); |
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205 | if (ret == ABAC_ATTRIBUTE_INVALID_VALIDITY) |
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206 | throw std::invalid_argument("Validity must be > 0 days"); |
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207 | if (ret == ABAC_ATTRIBUTE_INVALID_ISSUER) |
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208 | throw std::invalid_argument("Issuer's validity expired"); |
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209 | } |
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210 | |
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211 | |
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212 | bool principal(char *keyid) { |
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213 | if (baked()) throw std::logic_error("Cert is already baked"); |
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214 | return abac_attribute_principal(m_attr, keyid); |
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215 | } |
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216 | bool role(char *keyid, char *role) { |
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217 | if (baked()) throw std::logic_error("Cert is already baked"); |
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218 | return abac_attribute_role(m_attr, keyid, role); |
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219 | } |
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220 | bool linking_role(char *keyid, char *role, char *linked) { |
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221 | if (baked()) throw std::logic_error("Cert is already baked"); |
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222 | return abac_attribute_linking_role(m_attr, keyid, role, linked); |
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223 | } |
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224 | bool bake() { |
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225 | if (baked()) throw std::logic_error("Cert is already baked"); |
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226 | return abac_attribute_bake(m_attr); |
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227 | } |
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228 | |
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229 | bool baked() { return abac_attribute_baked(m_attr); } |
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230 | |
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231 | void write(FILE *out) { |
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232 | int ret = abac_attribute_write(m_attr, out); |
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233 | if (ret!=ABAC_SUCCESS) throw std::logic_error("Cert is not baked"); |
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234 | } |
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235 | void write(const std::string &name) { |
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236 | FILE *out = fopen(name.c_str(), "w"); |
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237 | if (out == NULL) |
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238 | throw std::invalid_argument("Could not open certificate file for writing"); |
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239 | write(out); |
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240 | fclose(out); |
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241 | } |
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242 | void write_file(const char *name) { |
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243 | int ret = abac_attribute_write_file(m_attr, name); |
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244 | if (ret!=ABAC_SUCCESS) throw std::logic_error("Cert is not baked"); |
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245 | } |
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246 | void write_name(const char *name) { |
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247 | write_file(name); |
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248 | fprintf(stderr,"ABAC::Attribute::write_name is deprecated, please use ABAC::Attribute::write_file\n"); |
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249 | } |
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250 | abac_chunk_t cert_chunk() { |
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251 | abac_chunk_t ret=abac_attribute_cert_chunk(m_attr); |
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252 | if(ret.len == 0) |
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253 | throw std::logic_error("Cert is not baked"); |
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254 | return ret; |
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255 | } |
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256 | |
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257 | private: |
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258 | abac_attribute_t *m_attr; |
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259 | }; |
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260 | } |
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261 | |
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262 | #endif /* __ABAC_HH__ */ |
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