[8bd77b5] | 1 | |
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| 2 | /* abac.c using prolog */ |
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| 3 | |
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| 4 | #include <assert.h> |
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| 5 | #include <err.h> |
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| 6 | #include <glob.h> |
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| 7 | |
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| 8 | #include <chunk.h> |
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| 9 | |
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| 10 | #include "abac_internal.h" |
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| 11 | |
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| 12 | #include "abac_pl_yap.h" |
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| 13 | #include "abac_util.h" |
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| 14 | #include "abac_verifier.h" |
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| 15 | |
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| 16 | static int debug=0; |
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| 17 | |
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| 18 | struct _abac_context_t { |
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| 19 | abac_pl_t *pl; |
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| 20 | }; |
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| 21 | |
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| 22 | /** |
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| 23 | * Init the library. |
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| 24 | */ |
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| 25 | void libabac_init(void) { |
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| 26 | void libabac_deinit(void); |
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| 27 | static int has_been_init = 0; |
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| 28 | |
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| 29 | // called every time a context is created, so only do it once |
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| 30 | if (!has_been_init) { |
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| 31 | abac_verifier_init(); |
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| 32 | atexit(libabac_deinit); |
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| 33 | has_been_init = 1; |
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| 34 | } |
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| 35 | } |
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| 36 | |
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| 37 | /** |
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| 38 | * Deinit the library. |
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| 39 | */ |
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| 40 | void libabac_deinit(void) { |
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| 41 | abac_verifier_deinit(); |
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| 42 | } |
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| 43 | |
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| 44 | /** |
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| 45 | * Create a new abac context. |
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| 46 | */ |
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| 47 | abac_context_t *abac_context_new(void) { |
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| 48 | libabac_init(); |
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| 49 | |
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| 50 | abac_context_t *ctx = abac_xmalloc(sizeof(abac_context_t)); |
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| 51 | ctx->pl = abac_pl_new(); |
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| 52 | return ctx; |
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| 53 | } |
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| 54 | |
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| 55 | /** |
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| 56 | * Deep copy an abac context. -- XXX dummy stub |
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| 57 | */ |
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| 58 | abac_context_t *abac_context_dup(abac_context_t *ctx) { |
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| 59 | assert(ctx != NULL); |
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| 60 | abac_context_t *dup = abac_xmalloc(sizeof(abac_context_t)); |
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| 61 | return dup; |
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| 62 | } |
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| 63 | |
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| 64 | |
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| 65 | /** |
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| 66 | * Free an abac context. |
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| 67 | */ |
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| 68 | void abac_context_free(abac_context_t *ctx) { |
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| 69 | assert(ctx != NULL); |
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| 70 | |
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| 71 | abac_pl_free(ctx->pl); |
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| 72 | free(ctx); |
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| 73 | } |
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| 74 | |
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| 75 | /** |
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| 76 | * Load an ID cert from an abac_id_t. |
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| 77 | */ |
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| 78 | int abac_context_load_id_id(abac_context_t *ctx, abac_id_t *id) { |
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| 79 | assert(ctx != NULL); assert(id); |
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| 80 | abac_id_credential_t *id_cert=NULL; |
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| 81 | int ret = abac_verifier_load_id_id(id,&id_cert); |
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| 82 | if(id_cert) { |
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| 83 | int add_ret = abac_pl_add_type_credential(ctx->pl, id_cert); |
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| 84 | } |
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| 85 | return ret; |
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| 86 | } |
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| 87 | |
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| 88 | /** |
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| 89 | * Load an ID cert from a file. |
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| 90 | */ |
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[ba6027a] | 91 | int abac_context_load_id_id_file_key_file(abac_context_t *ctx, char *filename, |
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| 92 | char *keyfilename) |
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| 93 | { |
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[d037f54] | 94 | assert(ctx != NULL); assert(filename != NULL); assert(keyfilename!=NULL); |
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[8bd77b5] | 95 | abac_id_credential_t *id_cert=NULL; |
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[5110d42] | 96 | int ret = abac_verifier_load_id_file_key_file(filename,keyfilename,&id_cert); |
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| 97 | if(id_cert) { |
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| 98 | int add_ret = abac_pl_add_type_credential(ctx->pl, id_cert); |
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| 99 | } |
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| 100 | return ret; |
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| 101 | } |
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[ba6027a] | 102 | |
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| 103 | int abac_context_load_id_enc_id_file_key_file(abac_context_t *ctx, char *filename, |
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| 104 | char *keyfilename, char *pfile) |
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| 105 | { |
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| 106 | assert(ctx != NULL); assert(filename != NULL); assert(keyfilename!=NULL); |
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| 107 | abac_id_credential_t *id_cert=NULL; |
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| 108 | int ret = abac_verifier_load_enc_id_file_key_file(filename,keyfilename, pfile, &id_cert); |
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| 109 | if(id_cert) { |
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| 110 | int add_ret = abac_pl_add_type_credential(ctx->pl, id_cert); |
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| 111 | } |
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| 112 | return ret; |
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| 113 | } |
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| 114 | |
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[5110d42] | 115 | /** |
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| 116 | * Load an ID cert from a file, it may contain key part but not necessary. |
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| 117 | */ |
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| 118 | int abac_context_load_id_idkey_file(abac_context_t *ctx, char *filename) { |
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| 119 | assert(ctx != NULL); assert(filename != NULL); |
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| 120 | abac_id_credential_t *id_cert=NULL; |
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| 121 | int ret = abac_verifier_load_idkey_file(filename,&id_cert); |
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[8bd77b5] | 122 | if(id_cert) { |
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| 123 | int add_ret = abac_pl_add_type_credential(ctx->pl, id_cert); |
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| 124 | } |
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| 125 | return ret; |
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| 126 | } |
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| 127 | |
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[ba6027a] | 128 | /** |
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| 129 | * Load an ID cert from a file, it may contain encrypted key part but not necessary. |
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| 130 | */ |
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| 131 | int abac_context_load_id_enc_idkey_file(abac_context_t *ctx, char *filename, char *pfile) { |
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| 132 | assert(ctx != NULL); assert(filename != NULL); |
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| 133 | abac_id_credential_t *id_cert=NULL; |
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| 134 | int ret = abac_verifier_load_enc_idkey_file(filename, pfile,&id_cert); |
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| 135 | if(id_cert) { |
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| 136 | int add_ret = abac_pl_add_type_credential(ctx->pl, id_cert); |
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| 137 | } |
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| 138 | return ret; |
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| 139 | } |
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| 140 | |
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[8bd77b5] | 141 | /** |
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| 142 | * Load an ID cert from a chunk. |
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| 143 | */ |
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| 144 | int abac_context_load_id_chunk(abac_context_t *ctx, abac_chunk_t cert) { |
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| 145 | assert(ctx != NULL); |
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| 146 | abac_id_credential_t *id_cert=NULL; |
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| 147 | chunk_t cert_chunk = { cert.ptr, cert.len }; |
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| 148 | int ret=abac_verifier_load_id_chunk(cert_chunk,&id_cert); |
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| 149 | if(id_cert) { |
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| 150 | int add_ret = abac_pl_add_type_credential(ctx->pl, id_cert); |
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| 151 | } |
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| 152 | return ret; |
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| 153 | } |
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| 154 | |
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[9b43fc3] | 155 | |
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| 156 | /** |
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| 157 | * Load an ID cert and privkey from chunks. |
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| 158 | */ |
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| 159 | int abac_context_load_id_privkey_chunk(abac_context_t *ctx, abac_chunk_t cert, abac_chunk_t privkey) { |
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| 160 | assert(ctx != NULL); |
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| 161 | abac_id_credential_t *id_cert=NULL; |
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| 162 | chunk_t cert_chunk = { cert.ptr, cert.len }; |
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[ba6027a] | 163 | /*A HACK/SWIG, this is to work around the swig's stub that seems to |
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| 164 | mess up the transformation from abac_chunk_t to chunk_t and calling of |
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| 165 | load_id_chunks to here */ |
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| 166 | /* BAD, chunk_t privkey_chunk = { privkey.ptr, privkey.len }; */ |
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| 167 | chunk_t privkey_chunk = { strndup(privkey.ptr,privkey.len), privkey.len }; |
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| 168 | /* another way, |
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| 169 | chunk_t tmp = { privkey.ptr, privkey.len }; |
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| 170 | char *ptr = abac_xmalloc(sizeof(unsigned char) * privkey.len); |
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| 171 | chunk_t privkey_chunk = chunk_create_clone(ptr,tmp); |
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| 172 | */ |
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| 173 | if(debug) { |
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[2485307] | 174 | fprintf(stderr, "abac_context_load_id_privkey_chunk, privkey ptr, loc(%d)\n", |
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[ba6027a] | 175 | (int)privkey.ptr); |
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[2485307] | 176 | fprintf(stderr, "abac_context_load_id_privkey_chunk, privkey_chunk ptr, loc(%d)\n", |
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[ba6027a] | 177 | (int)privkey_chunk.ptr); |
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| 178 | } |
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[9b43fc3] | 179 | int ret=abac_verifier_load_id_privkey_chunk(cert_chunk, privkey_chunk, &id_cert); |
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[ba6027a] | 180 | if(id_cert) { |
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| 181 | int add_ret = abac_pl_add_type_credential(ctx->pl, id_cert); |
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| 182 | } |
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| 183 | return ret; |
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| 184 | } |
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| 185 | |
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| 186 | /** |
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| 187 | * Load an ID cert and privkey from chunks. |
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| 188 | */ |
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| 189 | int abac_context_load_id_enc_privkey_chunk(abac_context_t *ctx, |
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| 190 | abac_chunk_t cert, abac_chunk_t privkey, char *pfile) { |
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| 191 | assert(ctx != NULL); |
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| 192 | abac_id_credential_t *id_cert=NULL; |
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| 193 | chunk_t cert_chunk = { cert.ptr, cert.len }; |
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| 194 | /*A HACK/SWIG, this is to work around the swig's stub that seems to |
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| 195 | mess up the transformation from abac_chunk_t to chunk_t and calling of |
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| 196 | load_id_chunks to here */ |
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| 197 | /* BAD, chunk_t privkey_chunk = { privkey.ptr, privkey.len }; */ |
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| 198 | chunk_t privkey_chunk = { strndup(privkey.ptr,privkey.len), privkey.len }; |
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| 199 | int ret=abac_verifier_load_id_enc_privkey_chunk(cert_chunk, privkey_chunk, pfile, &id_cert); |
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[9b43fc3] | 200 | |
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| 201 | if(id_cert) { |
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| 202 | int add_ret = abac_pl_add_type_credential(ctx->pl, id_cert); |
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| 203 | } |
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| 204 | return ret; |
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| 205 | } |
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| 206 | |
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| 207 | |
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[ba6027a] | 208 | |
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[8bd77b5] | 209 | /** |
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| 210 | * Load an attribute cert from an abac_attribute_t. |
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| 211 | */ |
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| 212 | int abac_context_load_attribute_attribute(abac_context_t *ctx, abac_attribute_t *ptr) |
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| 213 | { |
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[5d06689] | 214 | int ret, add_ret; |
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| 215 | abac_credential_t *cred=NULL; |
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| 216 | |
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| 217 | assert(ctx != NULL); |
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| 218 | |
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| 219 | ret = abac_verifier_load_attribute_cert_attribute(ptr, &cred); |
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| 220 | if (ret == ABAC_CERT_SUCCESS) { |
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| 221 | add_ret = abac_pl_add_credential(ctx->pl, cred); |
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| 222 | assert(add_ret != ABAC_PL_CRED_INVALID); |
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| 223 | } |
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| 224 | |
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[8bd77b5] | 225 | return ret; |
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[5d06689] | 226 | |
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[8bd77b5] | 227 | } |
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| 228 | |
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| 229 | /** |
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| 230 | * Load an attribute cert from a file. |
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| 231 | */ |
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| 232 | int abac_context_load_attribute_file(abac_context_t *ctx, char *filename) { |
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| 233 | int ret, add_ret; |
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[5110d42] | 234 | abac_credential_t *cred=NULL; |
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[8bd77b5] | 235 | |
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| 236 | assert(ctx != NULL); assert(filename != NULL); |
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| 237 | |
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| 238 | ret = abac_verifier_load_attribute_cert_file(filename, &cred); |
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| 239 | if (ret == ABAC_CERT_SUCCESS) { |
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| 240 | add_ret = abac_pl_add_credential(ctx->pl, cred); |
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| 241 | assert(add_ret != ABAC_PL_CRED_INVALID); |
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| 242 | } |
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| 243 | |
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| 244 | return ret; |
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| 245 | } |
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| 246 | |
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| 247 | /** |
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| 248 | * Load an attribute cert from a chunk. |
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| 249 | */ |
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| 250 | int abac_context_load_attribute_chunk(abac_context_t *ctx, abac_chunk_t cert) { |
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| 251 | int ret, add_ret; |
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[5110d42] | 252 | abac_credential_t *cred=NULL; |
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[8bd77b5] | 253 | |
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| 254 | assert(ctx != NULL); |
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| 255 | |
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| 256 | chunk_t cert_chunk = { cert.ptr, cert.len }; |
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| 257 | |
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| 258 | ret = abac_verifier_load_attribute_cert_chunk(cert_chunk, &cred); |
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| 259 | if (ret == ABAC_CERT_SUCCESS) { |
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| 260 | add_ret = abac_pl_add_credential(ctx->pl, cred); |
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| 261 | assert(add_ret != ABAC_PL_CRED_INVALID); |
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| 262 | } |
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| 263 | |
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| 264 | return ret; |
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| 265 | } |
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| 266 | |
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[d037f54] | 267 | #define KEY_PAT "/*_private.{der,pem}" |
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[8bd77b5] | 268 | #define ID_PAT "/*_ID.{der,pem}" |
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| 269 | #define ATTR_PAT "/*_attr.der" |
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[5110d42] | 270 | #define IDKEY_PAT "/*_IDKEY.{der,pem}" |
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[8bd77b5] | 271 | |
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[d037f54] | 272 | char *_make_key_filename(char *cert_file) |
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| 273 | { |
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| 274 | char *p=strstr(cert_file,"_ID."); |
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| 275 | char *head=strndup(cert_file,p-cert_file); |
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| 276 | char *tail=p+4; |
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| 277 | char *keyfile=NULL; |
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| 278 | asprintf(&keyfile,"%s_private.%s",head,tail); |
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| 279 | free(head); |
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| 280 | return keyfile; |
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| 281 | } |
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[2efdff5] | 282 | |
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[8bd77b5] | 283 | /** |
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[2efdff5] | 284 | * Load a directory full of principal certs. |
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[8bd77b5] | 285 | */ |
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[2efdff5] | 286 | void abac_context_load_principals(abac_context_t *ctx, char *path) { |
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[d037f54] | 287 | char *glob_pat, *key_pat; |
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[8bd77b5] | 288 | glob_t glob_buf; |
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| 289 | int i, ret; |
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| 290 | |
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| 291 | assert(ctx != NULL); assert(path != NULL); |
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| 292 | |
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| 293 | int dirlen = strlen(path); |
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[5110d42] | 294 | |
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| 295 | /* make sure pick the larger one */ |
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| 296 | glob_pat = abac_xmalloc(dirlen + sizeof(IDKEY_PAT)); |
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[8bd77b5] | 297 | memcpy(glob_pat, path, dirlen); |
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| 298 | |
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[2efdff5] | 299 | // load ID certs |
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[8bd77b5] | 300 | memcpy(glob_pat + dirlen, ID_PAT, sizeof(ID_PAT)); |
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| 301 | glob(glob_pat, GLOB_BRACE, NULL, &glob_buf); // TODO check for error |
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| 302 | for (i = 0; i < glob_buf.gl_pathc; ++i) { |
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[d037f54] | 303 | /* blah_ID.pem */ |
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[8bd77b5] | 304 | char *cert_file = glob_buf.gl_pathv[i]; |
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[d037f54] | 305 | /* blah_private.pem */ |
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| 306 | char *key_file=_make_key_filename(cert_file); |
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| 307 | if(debug) { |
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[2485307] | 308 | fprintf(stderr,"--> ID cert... %s\n", cert_file); |
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| 309 | fprintf(stderr,"--> KEY cert... %s\n", key_file); |
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[d037f54] | 310 | } |
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[5110d42] | 311 | ret = abac_context_load_id_id_file_key_file(ctx, cert_file, key_file); |
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[8bd77b5] | 312 | if (ret != ABAC_CERT_SUCCESS) |
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| 313 | warnx("Couldn't load ID cert %s", cert_file); |
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| 314 | } |
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| 315 | globfree(&glob_buf); |
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| 316 | |
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[2efdff5] | 317 | // next load IDKEY certs |
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[5110d42] | 318 | memcpy(glob_pat + dirlen, IDKEY_PAT, sizeof(IDKEY_PAT)); |
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| 319 | glob(glob_pat, GLOB_BRACE, NULL, &glob_buf); // TODO check for error |
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| 320 | for (i = 0; i < glob_buf.gl_pathc; ++i) { |
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| 321 | /* blah_IDKEY.pem */ |
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| 322 | char *certkey_file = glob_buf.gl_pathv[i]; |
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[2485307] | 323 | if(debug) fprintf(stderr, "--> IDKEY certkey... %s\n", certkey_file); |
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[5110d42] | 324 | ret = abac_context_load_id_idkey_file(ctx, certkey_file); |
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| 325 | if (ret != ABAC_CERT_SUCCESS) |
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| 326 | warnx("Couldn't load ID/KEY IDKEY cert %s", certkey_file); |
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| 327 | } |
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| 328 | globfree(&glob_buf); |
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| 329 | |
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[2efdff5] | 330 | free(glob_pat); |
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| 331 | } |
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| 332 | |
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| 333 | /** |
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| 334 | * Load a directory full of certs. |
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| 335 | */ |
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| 336 | void abac_context_load_directory(abac_context_t *ctx, char *path) { |
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| 337 | char *glob_pat, *key_pat; |
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| 338 | glob_t glob_buf; |
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| 339 | int i, ret; |
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| 340 | |
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| 341 | abac_context_load_principals(ctx,path); |
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| 342 | int dirlen = strlen(path); |
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| 343 | |
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| 344 | /* make sure pick the larger one */ |
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| 345 | glob_pat = abac_xmalloc(dirlen + sizeof(IDKEY_PAT)); |
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| 346 | memcpy(glob_pat, path, dirlen); |
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| 347 | |
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[8bd77b5] | 348 | memcpy(glob_pat + dirlen, ATTR_PAT, sizeof(ATTR_PAT)); |
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| 349 | glob(glob_pat, 0, NULL, &glob_buf); // TODO check for error |
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| 350 | for (i = 0; i < glob_buf.gl_pathc; ++i) { |
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| 351 | char *cert_file = glob_buf.gl_pathv[i]; |
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| 352 | |
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[2485307] | 353 | if(debug) fprintf(stderr,"--> attr file... (%s)\n", cert_file); |
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[8bd77b5] | 354 | ret = abac_context_load_attribute_file(ctx, cert_file); |
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| 355 | if (ret != ABAC_CERT_SUCCESS) |
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[2485307] | 356 | warnx("Couldn't load attribute cert --%s", cert_file); |
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| 357 | if(debug) fprintf(stderr,"Loaded.. (%s)\n", cert_file); |
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[8bd77b5] | 358 | } |
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| 359 | globfree(&glob_buf); |
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| 360 | |
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| 361 | free(glob_pat); |
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| 362 | } |
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| 363 | |
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| 364 | /** |
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| 365 | * Run a query on the data in an abac context. Returns a NULL-terminated array |
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| 366 | * of abac_credential_t. Success/failure in *success. |
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| 367 | * queryfor(either role or oset), with(either keyid or object type) |
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| 368 | */ |
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| 369 | abac_credential_t **abac_context_query(abac_context_t *ctx, char *queryfor, char *with, int *success) { |
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[2485307] | 370 | if(debug) fprintf(stderr,"abac_context_query about(%s) with(%s)\n", queryfor, with); |
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[8bd77b5] | 371 | abac_credential_t **credentials = NULL, *cur; |
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| 372 | assert(ctx != NULL); assert(queryfor != NULL); |
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| 373 | assert(with != NULL); assert(success != NULL); |
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| 374 | |
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| 375 | abac_stack_t *result = abac_pl_query(ctx->pl, queryfor, with); |
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| 376 | |
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| 377 | int size = abac_stack_size(result); |
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[d9c3886] | 378 | if (size > 0) { |
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| 379 | *success = 1; |
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| 380 | } else { |
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| 381 | // XXX NOT SURE YET.. |
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| 382 | // return partial proof |
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| 383 | *success = 0; |
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| 384 | } |
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| 385 | |
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| 386 | // make the array (leave space to NULL terminate it) |
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| 387 | // n.b., even if the list is empty, we still return an array that |
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| 388 | // only contains the NULL terminator |
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| 389 | credentials = abac_xmalloc(sizeof(abac_credential_t *) * (size + 1)); |
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| 390 | int i = 0; |
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| 391 | if(size) { |
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| 392 | while(i<size) { |
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| 393 | cur=(abac_credential_t *) abac_stack_pop(result); |
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| 394 | credentials[i++] = cur; |
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| 395 | } |
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| 396 | } |
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| 397 | credentials[i] = NULL; |
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| 398 | |
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| 399 | if(result) |
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| 400 | abac_stack_free(result); |
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| 401 | |
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| 402 | return credentials; |
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| 403 | } |
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| 404 | |
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[abf8d5d] | 405 | /** |
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| 406 | * Run a repeated query on the data in an abac context to get the next |
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| 407 | * solution proof. Returns a NULL-terminated array |
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| 408 | * of abac_credential_t. Success/failure in *success. |
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| 409 | */ |
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| 410 | abac_credential_t **abac_context_query_again(abac_context_t *ctx, int *success) |
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| 411 | { |
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| 412 | if(debug) fprintf(stderr,"abac_context_query_again\n"); |
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| 413 | abac_credential_t **credentials = NULL, *cur; |
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| 414 | assert(ctx != NULL); |
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| 415 | assert(success != NULL); |
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| 416 | |
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| 417 | abac_stack_t *result = abac_pl_query_again(ctx->pl); |
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| 418 | |
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| 419 | int size = abac_stack_size(result); |
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| 420 | if (size > 0) { |
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| 421 | *success = 1; |
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| 422 | } else { |
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| 423 | *success = 0; |
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| 424 | } |
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| 425 | |
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| 426 | // make the array (leave space to NULL terminate it) |
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| 427 | // n.b., even if the list is empty, we still return an array that |
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| 428 | // only contains the NULL terminator |
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| 429 | credentials = abac_xmalloc(sizeof(abac_credential_t *) * (size + 1)); |
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| 430 | int i = 0; |
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| 431 | if(size) { |
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| 432 | while(i<size) { |
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| 433 | cur=(abac_credential_t *) abac_stack_pop(result); |
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| 434 | credentials[i++] = cur; |
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| 435 | } |
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| 436 | } |
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| 437 | credentials[i] = NULL; |
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| 438 | |
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| 439 | if(result) |
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| 440 | abac_stack_free(result); |
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| 441 | |
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| 442 | return credentials; |
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| 443 | } |
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| 444 | |
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| 445 | |
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[d9c3886] | 446 | abac_credential_t **abac_context_query_with_structure(abac_context_t *ctx, |
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| 447 | abac_aspect_t *queryfor, abac_aspect_t *with, int *success) |
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| 448 | { |
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[2485307] | 449 | if(debug) fprintf(stderr,"abac_context_query_with_structure\n"); |
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[d9c3886] | 450 | abac_credential_t **credentials = NULL, *cur; |
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| 451 | assert(ctx != NULL); assert(queryfor != NULL); |
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| 452 | assert(with != NULL); assert(success != NULL); |
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| 453 | |
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| 454 | abac_stack_t *result = abac_pl_query_with_structure(ctx->pl, queryfor, with); |
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| 455 | |
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| 456 | int size = abac_stack_size(result); |
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[8bd77b5] | 457 | if (size > 0) { |
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| 458 | *success = 1; |
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| 459 | } else { |
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| 460 | // XXX NOT SURE YET.. |
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| 461 | // return partial proof |
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| 462 | *success = 0; |
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| 463 | } |
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| 464 | |
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| 465 | // make the array (leave space to NULL terminate it) |
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| 466 | // n.b., even if the list is empty, we still return an array that |
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| 467 | // only contains the NULL terminator |
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| 468 | credentials = abac_xmalloc(sizeof(abac_credential_t *) * (size + 1)); |
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| 469 | int i = 0; |
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| 470 | if(size) { |
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| 471 | while(i<size) { |
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| 472 | cur=(abac_credential_t *) abac_stack_pop(result); |
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| 473 | credentials[i++] = cur; |
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| 474 | } |
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| 475 | } |
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| 476 | credentials[i] = NULL; |
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| 477 | |
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| 478 | if(result) |
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| 479 | abac_stack_free(result); |
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| 480 | |
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| 481 | return credentials; |
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| 482 | } |
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| 483 | |
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| 484 | /** |
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| 485 | * A NULL-terminated array of all the credentials in the context. |
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| 486 | */ |
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| 487 | abac_credential_t **abac_context_credentials(abac_context_t *ctx) { |
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| 488 | abac_credential_t **credentials = NULL, *cur; |
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| 489 | assert(ctx != NULL); |
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| 490 | |
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| 491 | abac_stack_t *result = abac_pl_credentials(ctx->pl); |
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| 492 | int size = abac_stack_size(result); |
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| 493 | |
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| 494 | // make the array (leave space to NULL terminate it) |
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| 495 | // n.b., even if the list is empty, we still return an array that |
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| 496 | // only contains the NULL terminator |
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| 497 | credentials = abac_xmalloc(sizeof(abac_credential_t *) * (size + 1)); |
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| 498 | int i = 0; |
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| 499 | if(size) { |
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| 500 | while(i<size) { |
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| 501 | cur=(abac_credential_t *) abac_stack_pop(result); |
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| 502 | /* if not in there yet, add into it */ |
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| 503 | credentials[i++] = cur; |
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| 504 | } |
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| 505 | } |
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| 506 | credentials[i] = NULL; |
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| 507 | |
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| 508 | if(result) |
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| 509 | abac_stack_free(result); |
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| 510 | return credentials; |
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| 511 | } |
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| 512 | |
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| 513 | /** |
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| 514 | * Frees a NULL-terminated list of credentials. |
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| 515 | */ |
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| 516 | void abac_context_credentials_free(abac_credential_t **credentials) { |
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| 517 | int i; |
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| 518 | |
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| 519 | if (credentials == NULL) |
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| 520 | return; |
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| 521 | |
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| 522 | for (i = 0; credentials[i] != NULL; ++i) |
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| 523 | abac_credential_free(credentials[i]); |
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| 524 | free(credentials); |
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| 525 | } |
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| 526 | |
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[5110d42] | 527 | /** |
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| 528 | * A NULL-terminated array of all the principals in the context. |
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| 529 | */ |
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| 530 | abac_id_credential_t **abac_context_principals(abac_context_t *ctx) { |
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| 531 | abac_id_credential_t **principals = NULL, *cur; |
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| 532 | assert(ctx != NULL); |
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| 533 | |
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| 534 | abac_stack_t *result = abac_pl_principals(ctx->pl); |
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| 535 | |
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| 536 | int size = abac_stack_size(result); |
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| 537 | |
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| 538 | // make the array (leave space to NULL terminate it) |
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| 539 | // n.b., even if the list is empty, we still return an array that |
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| 540 | // only contains the NULL terminator |
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| 541 | principals = abac_xmalloc(sizeof(abac_id_credential_t *) * (size + 1)); |
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| 542 | int i = 0; |
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| 543 | if(size) { |
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| 544 | while(i<size) { |
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| 545 | cur=(abac_id_credential_t *) abac_stack_pop(result); |
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| 546 | /* if not in there yet, add into it */ |
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| 547 | principals[i++] = cur; |
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| 548 | } |
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| 549 | } |
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| 550 | principals[i] = NULL; |
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| 551 | |
---|
| 552 | if(result) |
---|
| 553 | abac_stack_free(result); |
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| 554 | return principals; |
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| 555 | } |
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| 556 | |
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| 557 | /** |
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| 558 | * Frees a NULL-terminated list of principals. |
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| 559 | */ |
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| 560 | void abac_context_principals_free(abac_id_credential_t **principals) { |
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| 561 | int i; |
---|
| 562 | |
---|
| 563 | if (principals == NULL) |
---|
| 564 | return; |
---|
| 565 | |
---|
| 566 | for (i = 0; principals[i] != NULL; ++i) |
---|
| 567 | abac_id_credential_free(principals[i]); |
---|
| 568 | free(principals); |
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| 569 | } |
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| 570 | |
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[ba6027a] | 571 | /** |
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| 572 | * |
---|
| 573 | */ |
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| 574 | abac_id_credential_t *abac_context_principal_lookup(abac_context_t *ctx, char *name) |
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| 575 | { |
---|
| 576 | assert(ctx != NULL); |
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| 577 | abac_id_credential_t *principal=abac_id_credential_lookup(name); |
---|
| 578 | return principal; |
---|
| 579 | } |
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