[abd7c25] | 1 | #include <assert.h> |
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| 2 | #include <getopt.h> |
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| 3 | #include <stdio.h> |
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| 4 | #include <stdlib.h> |
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| 5 | #include <string.h> |
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| 6 | |
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| 7 | #include "creddy.h" |
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| 8 | |
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| 9 | #define OPT_CN 1 |
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| 10 | #define OPT_VALIDITY 2 |
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[fd0febd] | 11 | #define OPT_CERT 3 |
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[085f159] | 12 | #define OPT_ISSUER 4 |
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| 13 | #define OPT_KEY 5 |
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| 14 | #define OPT_ROLE 6 |
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[ee5afdd] | 15 | #define OPT_SUBJECT_CERT 7 |
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[085f159] | 16 | #define OPT_SUBJECT_ROLE 8 |
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| 17 | #define OPT_OUT 9 // the world oughta be opt-in only :( |
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[784a398] | 18 | #define OPT_ATTRCERT 10 |
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[ee5afdd] | 19 | #define OPT_SUBJECT_ID 11 |
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[abd7c25] | 20 | |
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| 21 | int main(int argc, char **argv) { |
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| 22 | int ret; |
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| 23 | options_t options = { 0, }; |
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| 24 | |
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| 25 | struct option getopts[] = { |
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| 26 | { "help", 0, &options.help, 1 }, |
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| 27 | { "generate", 0, &options.mode, MODE_GENERATE }, |
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| 28 | { "verify", 0, &options.mode, MODE_VERIFY }, |
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| 29 | { "keyid", 0, &options.mode, MODE_KEYID }, |
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| 30 | { "attribute", 0, &options.mode, MODE_ATTRIBUTE }, |
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| 31 | { "roles", 0, &options.mode, MODE_ROLES }, |
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[19be896] | 32 | { "version", 0, &options.mode, MODE_VERSION }, |
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[abd7c25] | 33 | |
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[fd0febd] | 34 | { "cert", 1, 0, OPT_CERT }, |
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| 35 | |
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[abd7c25] | 36 | // generate options |
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| 37 | { "cn", 1, 0, OPT_CN }, |
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| 38 | { "validity", 1, 0, OPT_VALIDITY }, |
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| 39 | |
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[085f159] | 40 | // attribute options |
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| 41 | { "issuer", 1, 0, OPT_ISSUER }, |
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| 42 | { "key", 1, 0, OPT_KEY }, |
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| 43 | { "role", 1, 0, OPT_ROLE }, |
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[ee5afdd] | 44 | { "subject-cert", 1, 0, OPT_SUBJECT_CERT }, |
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| 45 | { "subject-id", 1, 0, OPT_SUBJECT_ID }, |
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[ec06cb6] | 46 | { "subject-role", 1, 0, OPT_SUBJECT_ROLE }, |
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[085f159] | 47 | { "out", 1, 0, OPT_OUT }, |
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| 48 | |
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[784a398] | 49 | // verify option |
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| 50 | { "attrcert", 1, 0, OPT_ATTRCERT }, |
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| 51 | |
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[abd7c25] | 52 | { NULL }, |
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| 53 | }; |
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| 54 | |
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| 55 | for ( ; ; ) { |
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| 56 | int c = getopt_long(argc, argv, "", getopts, NULL); |
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| 57 | if (c < 0) |
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| 58 | break; |
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| 59 | |
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| 60 | switch (c) { |
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| 61 | // set the option from the value in the getopts struct |
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| 62 | case 0: |
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| 63 | continue; |
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| 64 | |
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[fd0febd] | 65 | case OPT_CERT: |
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| 66 | options.cert = xstrdup(optarg); |
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| 67 | break; |
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| 68 | |
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[abd7c25] | 69 | // generate options |
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| 70 | case OPT_CN: |
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| 71 | options.cn = xstrdup(optarg); |
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| 72 | break; |
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[085f159] | 73 | case OPT_VALIDITY: // also an attribute option |
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[abd7c25] | 74 | options.validity = atoi(optarg); |
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| 75 | break; |
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| 76 | |
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[085f159] | 77 | // attribute options |
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| 78 | case OPT_ISSUER: |
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| 79 | options.issuer = xstrdup(optarg); |
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| 80 | break; |
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| 81 | case OPT_KEY: |
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| 82 | options.key = xstrdup(optarg); |
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| 83 | break; |
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| 84 | case OPT_ROLE: |
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| 85 | options.role = xstrdup(optarg); |
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| 86 | break; |
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[ee5afdd] | 87 | case OPT_SUBJECT_CERT: |
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| 88 | options.subject_cert = xstrdup(optarg); |
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| 89 | break; |
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| 90 | case OPT_SUBJECT_ID: |
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| 91 | options.subject_id = xstrdup(optarg); |
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[085f159] | 92 | break; |
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| 93 | case OPT_SUBJECT_ROLE: |
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| 94 | options.subject_role = xstrdup(optarg); |
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| 95 | break; |
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| 96 | case OPT_OUT: |
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| 97 | options.out = xstrdup(optarg); |
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| 98 | break; |
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| 99 | |
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[784a398] | 100 | // verify options |
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| 101 | case OPT_ATTRCERT: |
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| 102 | options.attrcert = xstrdup(optarg); |
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| 103 | break; |
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| 104 | |
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[abd7c25] | 105 | case '?': |
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| 106 | break; |
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| 107 | |
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| 108 | default: |
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| 109 | printf("wat\n"); |
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| 110 | return 45; |
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| 111 | } |
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| 112 | } |
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| 113 | |
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| 114 | if (options.help || optind < argc) { |
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| 115 | if (optind > 0 && optind < argc) |
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| 116 | printf("I don't understand %s\n", argv[optind]); |
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| 117 | usage(&options); |
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| 118 | } |
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| 119 | |
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| 120 | // init libstrongswan |
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| 121 | atexit(library_deinit); |
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[219f8ad] | 122 | dbg_default_set_level(-1); |
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[abd7c25] | 123 | ret = library_init(NULL); |
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| 124 | if (!ret) |
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| 125 | exit(SS_RC_LIBSTRONGSWAN_INTEGRITY); |
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| 126 | ret = lib->plugins->load( |
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| 127 | lib->plugins, |
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| 128 | NULL, |
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| 129 | lib->settings->get_str(lib->settings, "", PLUGINS) |
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| 130 | ); |
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| 131 | if (!ret) |
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| 132 | exit(SS_RC_LIBSTRONGSWAN_INTEGRITY); |
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| 133 | |
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[9410b51] | 134 | // launch the sub command |
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[abd7c25] | 135 | switch (options.mode) { |
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| 136 | case MODE_GENERATE: |
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[085f159] | 137 | if (options.validity == 0) options.validity = 1080; |
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[abd7c25] | 138 | generate_main(&options); |
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| 139 | break; |
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| 140 | |
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[fd0febd] | 141 | case MODE_KEYID: |
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| 142 | keyid_main(&options); |
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| 143 | break; |
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| 144 | |
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[085f159] | 145 | case MODE_ATTRIBUTE: |
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| 146 | if (options.validity == 0) options.validity = 365; |
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| 147 | attribute_main(&options); |
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| 148 | break; |
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| 149 | |
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[9410b51] | 150 | case MODE_ROLES: |
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| 151 | roles_main(&options); |
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| 152 | break; |
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| 153 | |
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[784a398] | 154 | case MODE_VERIFY: |
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| 155 | verify_main(&options); |
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| 156 | break; |
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| 157 | |
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[19be896] | 158 | case MODE_VERSION: |
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| 159 | printf("ABAC/creddy " ABAC_VERSION "\n"); |
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| 160 | break; |
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| 161 | |
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[abd7c25] | 162 | default: |
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| 163 | usage(&options); |
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| 164 | } |
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| 165 | |
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| 166 | return 0; |
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| 167 | } |
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| 168 | |
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| 169 | void usage(options_t *opts) { |
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| 170 | if (opts->mode == MODE_GENERATE) |
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| 171 | printf( |
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[66462c5] | 172 | "Usage: creddy --generate --cn <name> [ --validity <days> ]\n" |
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[f1e892e] | 173 | " cert will be in ${name}_ID.der, private key in ${name}_private.pem\n" |
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[abd7c25] | 174 | " default validity: 1080 days\n" |
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| 175 | ); |
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| 176 | |
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| 177 | else if (opts->mode == MODE_VERIFY) |
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| 178 | printf( |
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| 179 | "Usage: identity --verify --cert <cert> [ --attrcert <cert> ]\n" |
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| 180 | " if attrcert is provided, verify that it was issued by cert\n" |
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| 181 | ); |
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| 182 | |
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| 183 | else if (opts->mode == MODE_KEYID) |
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| 184 | printf( |
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| 185 | "Usage: identity --keyid --cert <cert>\n" |
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| 186 | ); |
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| 187 | |
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| 188 | else if (opts->mode == MODE_ATTRIBUTE) |
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| 189 | printf( |
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| 190 | "Usage: identity --attribute \\\n" |
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| 191 | " --issuer <cert> --key <key> --role <role> \\\n" |
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[ee5afdd] | 192 | " --subject-cert <cert> | --subject-id <sha1> \\\n" |
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| 193 | " [ --subject-role <role> ] \\\n" |
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[abd7c25] | 194 | " [ --validity <days> ] --out <file>\n" |
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| 195 | " default validity: 365 days\n" |
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[ee5afdd] | 196 | " provide exactly one of --subject-cert / --subject-id\n" |
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[abd7c25] | 197 | ); |
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| 198 | |
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| 199 | else if (opts->mode == MODE_ROLES) |
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| 200 | printf( |
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| 201 | "Usage: identity --roles --cert <cert>\n" |
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| 202 | ); |
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| 203 | |
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| 204 | else |
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| 205 | printf( |
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[66462c5] | 206 | "Usage: creddy [ --<mode> ] [ --help ]\n" |
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[abd7c25] | 207 | " --generate: generate X.509 identity cert and private key\n" |
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| 208 | " --verify: check validity of X.509 ID or attribute cert\n" |
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| 209 | " --keyid: get fingerprint from X.509 ID cert\n" |
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| 210 | " --attribute: generate an X.509 attribute cert\n" |
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| 211 | " --roles: list roles from an X.509 attribute cert\n" |
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[19be896] | 212 | " --version: display ABAC version\n" |
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[abd7c25] | 213 | ); |
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| 214 | |
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| 215 | |
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| 216 | exit(1); |
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| 217 | } |
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| 218 | |
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| 219 | void *xmalloc(size_t len) { |
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| 220 | void *ret = malloc(len); |
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| 221 | if (ret == NULL) |
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| 222 | err(1, "couldn't malloc %d bytes\n", len); |
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| 223 | return ret; |
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| 224 | } |
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| 225 | |
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| 226 | char *xstrdup(char *string) { |
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| 227 | char *dup = strdup(string); |
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| 228 | if (dup == NULL) |
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| 229 | err(1, "Can't dup %s", string); |
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| 230 | return dup; |
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| 231 | } |
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| 232 | |
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| 233 | int clean_name(char *string) { |
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| 234 | int i; |
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| 235 | |
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| 236 | assert(string != NULL); |
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| 237 | |
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| 238 | // must start with a letter |
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| 239 | if (!isalpha(string[0])) |
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| 240 | return 0; |
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| 241 | |
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[085f159] | 242 | // rest must be alphanumeric or _ |
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[abd7c25] | 243 | for (i = 1; string[i] != '\0'; ++i) |
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[085f159] | 244 | if (!isalnum(string[i]) && string[i] != '_') |
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[abd7c25] | 245 | return 0; |
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| 246 | |
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| 247 | return 1; |
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| 248 | } |
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[fd0febd] | 249 | |
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| 250 | // load an ID cert from file |
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| 251 | certificate_t *cert_from_file(char *filename) { |
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| 252 | certificate_t *cert = lib->creds->create(lib->creds, |
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| 253 | CRED_CERTIFICATE, CERT_X509, |
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| 254 | BUILD_FROM_FILE, filename, |
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| 255 | BUILD_X509_FLAG, X509_AA, |
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| 256 | BUILD_END |
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| 257 | ); |
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| 258 | |
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| 259 | if (cert == NULL) |
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| 260 | errx(1, "Can't open cert from %s", filename); |
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| 261 | |
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| 262 | return cert; |
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| 263 | } |
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[784a398] | 264 | |
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| 265 | certificate_t *attr_cert_from_file(char *filename) { |
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| 266 | certificate_t *cert = lib->creds->create(lib->creds, |
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| 267 | CRED_CERTIFICATE, CERT_X509_AC, |
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| 268 | BUILD_FROM_FILE, filename, |
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| 269 | BUILD_END |
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| 270 | ); |
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| 271 | if (cert == NULL) |
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| 272 | errx(1, "Couldn't load attribute cert %s", filename); |
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| 273 | |
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| 274 | return cert; |
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| 275 | } |
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