[64fa9ba] | 1 | #ifndef __ABAC_HH__ |
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| 2 | #define __ABAC_HH__ |
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| 3 | |
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[461541a] | 4 | #include <cstdio> |
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| 5 | #include <stdexcept> |
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[2af3b82] | 6 | #include <string> |
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[9dffbd6] | 7 | #include <vector> |
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| 8 | |
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[64fa9ba] | 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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[2af3b82] | 14 | class Role { |
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| 15 | public: |
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[9e353d2] | 16 | Role() : m_role(NULL) { } // do not use: here for swig |
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[2af3b82] | 17 | Role(abac_role_t *role) { m_role = abac_role_dup(role); } |
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| 18 | Role(char *role_name) { m_role = abac_role_from_string(role_name); } |
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| 19 | Role(const Role &role) { m_role = abac_role_dup(role.m_role); } |
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| 20 | ~Role() { abac_role_free(m_role); } |
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| 21 | |
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| 22 | bool is_principal() const { return abac_role_is_principal(m_role); } |
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| 23 | bool is_role() const { return abac_role_is_role(m_role); } |
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| 24 | bool is_linking() const { return abac_role_is_linking(m_role); } |
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| 25 | |
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| 26 | char *string() const { return abac_role_string(m_role); } |
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| 27 | char *linked_role() const { return abac_role_linked_role(m_role); } |
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| 28 | char *role_name() const { return abac_role_role_name(m_role); } |
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| 29 | char *principal() const { return abac_role_principal(m_role); } |
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| 30 | |
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| 31 | private: |
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| 32 | abac_role_t *m_role; |
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| 33 | }; |
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| 34 | |
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[9dffbd6] | 35 | class Credential { |
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| 36 | public: |
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[9e353d2] | 37 | Credential() : m_cred(NULL) { } // do not use: here for swig |
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[2af3b82] | 38 | Credential(abac_credential_t *cred) : |
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| 39 | m_head(abac_credential_head(cred)), |
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| 40 | m_tail(abac_credential_tail(cred)), |
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| 41 | m_cred(abac_credential_dup(cred)) |
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| 42 | { } |
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| 43 | Credential(const Credential &cred) : |
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| 44 | m_head(cred.m_head), |
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| 45 | m_tail(cred.m_tail), |
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| 46 | m_cred(abac_credential_dup(cred.m_cred)) |
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| 47 | { } |
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[9dffbd6] | 48 | ~Credential() { abac_credential_free(m_cred); } |
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| 49 | |
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[2af3b82] | 50 | const Role &head() { return m_head; } |
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| 51 | const Role &tail() { return m_tail; } |
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[9dffbd6] | 52 | abac_chunk_t attribute_cert() { return abac_credential_attribute_cert(m_cred); } |
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| 53 | abac_chunk_t issuer_cert() { return abac_credential_issuer_cert(m_cred); } |
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| 54 | |
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| 55 | private: |
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| 56 | abac_credential_t *m_cred; |
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[2af3b82] | 57 | Role m_head, m_tail; |
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[9dffbd6] | 58 | }; |
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| 59 | |
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[64fa9ba] | 60 | class Context { |
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| 61 | public: |
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| 62 | Context() { m_ctx = abac_context_new(); } |
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| 63 | Context(const Context &context) { m_ctx = abac_context_dup(context.m_ctx); } |
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| 64 | ~Context() { abac_context_free(m_ctx); } |
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| 65 | |
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[0779c99] | 66 | /* see abac.h for possible return values */ |
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[64fa9ba] | 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 | /* load an entire directory full of certs */ |
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| 73 | void load_directory(char *path) { abac_context_load_directory(m_ctx, path); } |
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| 74 | |
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[9dffbd6] | 75 | /* abac query, returns a vector of credentials on success, NULL on fail */ |
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[4e426c9] | 76 | std::vector<Credential> query(char *role, char *principal, bool &success) { |
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[a70acc9] | 77 | abac_credential_t **creds, **end; |
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[4e426c9] | 78 | int i, success_int; |
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| 79 | |
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[a70acc9] | 80 | creds = abac_context_query(m_ctx, role, principal, &success_int); |
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[4e426c9] | 81 | success = success_int; |
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[9dffbd6] | 82 | |
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[a70acc9] | 83 | for (i = 0; creds[i] != NULL; ++i) |
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[9dffbd6] | 84 | ; |
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| 85 | |
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[a70acc9] | 86 | end = &creds[i]; |
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| 87 | std::vector<Credential> credentials = std::vector<Credential>(creds, end); |
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[9dffbd6] | 88 | |
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[a70acc9] | 89 | abac_context_credentials_free(creds); |
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[9dffbd6] | 90 | |
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| 91 | return credentials; |
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| 92 | } |
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[64fa9ba] | 93 | |
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[3c4fd68] | 94 | std::vector<Credential> credentials() { |
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| 95 | abac_credential_t **creds, **end; |
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| 96 | int i; |
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| 97 | |
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| 98 | creds = abac_context_credentials(m_ctx); |
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| 99 | for (i = 0; creds[i] != NULL; ++i) |
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| 100 | ; |
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| 101 | |
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| 102 | end = &creds[i]; |
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| 103 | std::vector<Credential> credentials = std::vector<Credential>(creds, end); |
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| 104 | |
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| 105 | abac_context_credentials_free(creds); |
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| 106 | return credentials; |
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| 107 | } |
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| 108 | |
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[64fa9ba] | 109 | private: |
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| 110 | abac_context_t *m_ctx; |
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| 111 | }; |
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[461541a] | 112 | |
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| 113 | class ID { |
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| 114 | public: |
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| 115 | ID() : m_id(NULL) { } // do not use: required by swig |
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| 116 | |
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| 117 | // load an ID from a file |
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| 118 | ID(char *filename) : m_id(NULL) { |
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| 119 | m_id = abac_id_from_file(filename); |
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| 120 | if (m_id == NULL) |
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| 121 | throw std::invalid_argument("Could not load ID cert"); |
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| 122 | } |
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| 123 | |
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| 124 | // load an ID from a chunk |
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| 125 | ID(abac_chunk_t chunk) : m_id(NULL) { |
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| 126 | m_id = abac_id_from_chunk(chunk); |
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| 127 | if (m_id == NULL) |
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| 128 | throw std::invalid_argument("Could not load ID cert"); |
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| 129 | } |
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| 130 | |
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| 131 | // generate an ID with a given CN and validity |
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| 132 | ID(char *cn, int validity) : m_id(NULL) { |
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| 133 | int ret = abac_id_generate(&m_id, cn, validity); |
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| 134 | if (ret == ABAC_GENERATE_INVALID_CN) |
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| 135 | throw std::invalid_argument("CN must be alphanumeric and start with a letter"); |
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| 136 | if (ret == ABAC_GENERATE_INVALID_VALIDITY) |
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| 137 | throw std::invalid_argument("Validity must be > 0 days"); |
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| 138 | } |
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| 139 | |
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| 140 | ID(const ID &id) { m_id = abac_id_dup(id.m_id); } |
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| 141 | |
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| 142 | ~ID() { abac_id_free(m_id); } |
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| 143 | |
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| 144 | // load private key from a file |
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| 145 | void load_privkey(char *filename) { |
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| 146 | int ret = abac_id_privkey_from_file(m_id, filename); |
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| 147 | if (!ret) |
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| 148 | throw std::invalid_argument("Could not load private key"); |
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| 149 | } |
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| 150 | |
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| 151 | char *keyid() { return abac_id_keyid(m_id); } |
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| 152 | char *cert_filename() { return abac_id_cert_filename(m_id); } |
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| 153 | void write_cert(std::FILE *out) { abac_id_write_cert(m_id, out); } |
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| 154 | void write_cert(const std::string &name) { |
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| 155 | std::FILE *out = fopen(name.c_str(), "w"); |
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| 156 | if (out == NULL) |
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| 157 | throw std::invalid_argument("Could not open cert file for writing"); |
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| 158 | write_cert(out); |
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| 159 | fclose(out); |
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| 160 | } |
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| 161 | // Simplifies access from swig |
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| 162 | void write_cert(const char *n) { |
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| 163 | write_cert(std::string(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 | |
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| 167 | // write the private ket |
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| 168 | // throws a std::logic_error if no private key is loaded |
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| 169 | void write_privkey(std::FILE *out) { |
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| 170 | int ret = abac_id_write_privkey(m_id, out); |
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| 171 | if (!ret) throw std::logic_error("No private key loaded"); |
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| 172 | } |
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| 173 | void write_privkey(const std::string &name) { |
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| 174 | std::FILE *out = fopen(name.c_str(), "w"); |
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| 175 | if (out == NULL) |
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| 176 | throw std::invalid_argument("Could not open privkey file for writing"); |
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| 177 | write_privkey(out); |
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| 178 | fclose(out); |
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| 179 | } |
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| 180 | // Simplifies access from swig |
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| 181 | void write_privkey(const char *name) { |
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| 182 | write_privkey(std::string(name)); |
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| 183 | } |
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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 | |
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| 187 | friend class Attribute; |
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| 188 | |
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| 189 | private: |
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| 190 | abac_id_t *m_id; |
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| 191 | }; |
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| 192 | |
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| 193 | class Attribute { |
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| 194 | public: |
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| 195 | Attribute() : m_attr(NULL) { } // do not use: required by swig |
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| 196 | |
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| 197 | // create a cert |
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| 198 | Attribute(ID &issuer, char *role, int validity) : m_attr(NULL) { |
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| 199 | int ret = abac_attribute_create(&m_attr, issuer.m_id, role, validity); |
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| 200 | if (ret == ABAC_ATTRIBUTE_ISSUER_NOKEY) |
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| 201 | throw std::invalid_argument("Issuer has no private key"); |
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| 202 | if (ret == ABAC_ATTRIBUTE_INVALID_ROLE) |
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| 203 | throw std::invalid_argument("Role name must be alphanumeric"); |
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| 204 | if (ret == ABAC_ATTRIBUTE_INVALID_VALIDITY) |
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| 205 | throw std::invalid_argument("Validity must be > 0 days"); |
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| 206 | if (ret == ABAC_ATTRIBUTE_INVALID_ISSUER) |
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| 207 | throw std::invalid_argument("Issuer's validity expired"); |
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| 208 | } |
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| 209 | |
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| 210 | ~Attribute() { abac_attribute_free(m_attr); } |
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| 211 | |
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| 212 | // these return false if there's a bad keyid or role name |
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| 213 | // they'll throw a std::logic_error if the cert's been baked |
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| 214 | bool principal(char *keyid) { |
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| 215 | if (baked()) throw std::logic_error("Cert is already baked"); |
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| 216 | return abac_attribute_principal(m_attr, keyid); |
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| 217 | } |
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| 218 | bool role(char *keyid, char *role) { |
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| 219 | if (baked()) throw std::logic_error("Cert is already baked"); |
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| 220 | return abac_attribute_role(m_attr, keyid, role); |
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| 221 | } |
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| 222 | bool linking_role(char *keyid, char *role, char *linked) { |
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| 223 | if (baked()) throw std::logic_error("Cert is already baked"); |
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| 224 | return abac_attribute_linking_role(m_attr, keyid, role, linked); |
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| 225 | } |
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| 226 | |
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| 227 | // returns false if there are no subjects or libstrongswan fails |
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| 228 | // throws a std::logic_error if the cert's already been baked |
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| 229 | bool bake() { |
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| 230 | if (baked()) throw std::logic_error("Cert is already baked"); |
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| 231 | return abac_attribute_bake(m_attr); |
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| 232 | } |
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| 233 | |
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| 234 | // returns true iff the cert's been baked |
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| 235 | bool baked() { return abac_attribute_baked(m_attr); } |
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| 236 | |
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| 237 | // throws a std::logic_error if the cert isn't baked |
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| 238 | void write(std::FILE *out) { |
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| 239 | int ret = abac_attribute_write(m_attr, out); |
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| 240 | if (!ret) throw std::logic_error("Cert is not baked"); |
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| 241 | } |
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| 242 | |
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| 243 | void write(const std::string &name) { |
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| 244 | std::FILE *out = fopen(name.c_str(), "w"); |
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| 245 | if (out == NULL) |
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| 246 | throw std::invalid_argument("Could not open cert file for writing"); |
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| 247 | write(out); |
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| 248 | fclose(out); |
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| 249 | } |
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| 250 | |
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| 251 | // Simplifies access from swig |
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| 252 | void write(const char *name) { |
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| 253 | write(std::string(name)); |
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| 254 | } |
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| 255 | |
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| 256 | // throws a std::logic_error if the cert isn't baked |
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| 257 | abac_chunk_t cert_chunk() { |
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| 258 | abac_chunk_t ret; |
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| 259 | if (!baked()) throw std::logic_error("Cert is not baked"); |
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| 260 | abac_attribute_cert_chunk(m_attr, &ret); |
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| 261 | return ret; |
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| 262 | } |
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| 263 | |
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| 264 | private: |
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| 265 | abac_attribute_t *m_attr; |
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| 266 | }; |
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[64fa9ba] | 267 | } |
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| 268 | |
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| 269 | #endif /* __ABAC_HH__ */ |
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