sync/cond_act_sync.yml2
author Volker Birk <vb@pep-project.org>
Thu, 21 Mar 2019 13:02:54 +0100
branchsync
changeset 3364 e3fb1b26d179
parent 3125 bcbe0de52f4d
child 3365 cbc208d0e104
permissions -rw-r--r--
use partner's fpr
     1 // This file is under GNU General Public License 3.0
     2 // see LICENSE.txt
     3 
     4 // generate conditions and actions
     5 
     6 // Copyleft (c) 2017, 2018, p≡p foundation
     7 
     8 // Written by Volker Birk
     9 
    10 
    11 include ./sql_func.yml2
    12 
    13 // condition: PEP_STATUS «@name»(PEP_SESSION session, bool *result)
    14 
    15 condition deviceGrouped {
    16     call "exec_sql_int" with "sql"
    17         > "select count(*) from identity where is_own = 1 and (flags & 4) = 4;"
    18     |> *result = _result > 0;
    19 }
    20 
    21 condition weAreFirst
    22 ||
    23     TID_t *t1 = &session->sync_state.keysync.challenge;
    24     TID_t *t2 = &session->own_sync_state.challenge;
    25 
    26     *result = _TID_greater(t1, t2);
    27 ||
    28 
    29 condition partnerIsGrouped
    30 |> *result = session->sync_state.keysync.is_group;
    31 
    32 condition challengeAccepted
    33 ||
    34     TID_t *t1 = &session->sync_state.keysync.challenge;
    35     TID_t *t2 = &session->own_sync_state.challenge;
    36 
    37     *result = t1->size == t2->size && memcmp(t1->buf, t2->buf, t1->size) == 0;
    38 ||
    39 
    40 condition keyElectionWon
    41 ||
    42     pEp_identity *from = session->sync_state.common.from;
    43 
    44     assert(from && from->fpr && from->fpr[0] && from->address &&
    45             from->address[0] && from->user_id && from->user_id[0]);
    46     if (!(from && from->fpr && from->fpr[0] && from->address &&
    47             from->address[0] && from->user_id && from->user_id[0]))
    48         return PEP_ILLEGAL_VALUE;
    49 
    50     pEp_identity *me = NULL;
    51     PEP_STATUS status = get_identity(session, from->address, from->user_id, &me);
    52     assert(status == PEP_STATUS_OK);
    53     if (status)
    54         return status;
    55 
    56     assert(me->fpr && me->fpr[0]);
    57     if (!(me->fpr && me->fpr[0])) {
    58         free_identity(me);
    59         return PEP_ILLEGAL_VALUE;
    60     }
    61 
    62     size_t len = MIN(strlen(from->fpr), strlen(me->fpr));
    63     *result = strncasecmp(from->fpr, me->fpr, len) > 0;
    64     free_identity(me);
    65 ||
    66 
    67 // action: PEP_STATUS «@name»(PEP_SESSION session)
    68 
    69 function "new_UUID" {
    70     param "dst";
    71     ||
    72         pEpUUID c;
    73         uuid_generate_random(c);
    74 
    75         OCTET_STRING_fromBuf(«$dst», (char *) c, 16);
    76     ||
    77 }
    78 
    79 function "copy_UUID" {
    80     param "src", param "dst";
    81     ||
    82         TID_t *src = «$src»;
    83         TID_t *dst = «$dst»;
    84 
    85         assert(src->size == 16);
    86         if (!(src->size == 16))
    87             return PEP_UNKNOWN_ERROR;
    88 
    89         OCTET_STRING_fromBuf(dst, (char *) src->buf, src->size);
    90     ||
    91 }
    92 
    93 action openChallenge
    94     call "new_UUID" with "dst" > &session->own_sync_state.challenge
    95 
    96 action storeChallenge call "copy_UUID" {
    97     with "src" > &session->sync_state.keysync.challenge
    98     with "dst" > &session->own_sync_state.challenge
    99 }
   100 
   101 action openTransaction
   102     call "new_UUID" with "dst" > &session->sync_state.keysync.transaction
   103 
   104 action storeTransaction call "copy_UUID" {
   105     with "src" > &session->sync_state.keysync.transaction
   106     with "dst" > &session->own_sync_state.transaction
   107 }
   108 
   109 function "show_handshake" {
   110     param "type";
   111     ||
   112         assert(session->notifyHandshake);
   113         if (!session->notifyHandshake)
   114             return PEP_SYNC_NO_NOTIFY_CALLBACK;
   115      
   116         assert(session->sync_state.common.from);
   117         if (!session->sync_state.common.from)
   118             return PEP_ILLEGAL_VALUE;
   119 
   120         pEp_identity *from = session->sync_state.common.from;
   121         pEp_identity *me = NULL;
   122         PEP_STATUS status = get_identity(session, from->address, from->user_id, &me);
   123         assert(status == PEP_STATUS_OK);
   124         if (status)
   125             return status;
   126 
   127         assert(me->fpr && me->fpr[0]);
   128         if (!(me->fpr && me->fpr[0])) {
   129             free_identity(me);
   130             return PEP_ILLEGAL_VALUE;
   131         }
   132 
   133         pEp_identity *partner = identity_dup(from);
   134         if (!partner) {
   135             free_identity(me);
   136             return PEP_OUT_OF_MEMORY;
   137         }
   138         free(partner->fpr);
   139         partner->fpr = strdup(session->sync_state.common.signature_fpr);
   140         if (!partner->fpr) {
   141             free_identity(me);
   142             free_identity(partner);
   143             return PEP_OUT_OF_MEMORY;
   144         }
   145 
   146         status = session->notifyHandshake(me, partner, «$type»);
   147         if (status)
   148             return status;
   149     ||
   150 }
   151 
   152 action showSoleHandshake
   153     call "show_handshake" with "type" > SYNC_NOTIFY_INIT_FORM_GROUP
   154 
   155 action showJoinGroupHandshake
   156     call "show_handshake" with "type" > SYNC_NOTIFY_INIT_ADD_OUR_DEVICE
   157 
   158 action showGroupedHandshake
   159     call "show_handshake" with "type" > SYNC_NOTIFY_INIT_ADD_OTHER_DEVICE
   160 
   161 timeout KeySync
   162     call "show_handshake" with "type" > SYNC_NOTIFY_TIMEOUT
   163 
   164 action saveGroupKeys
   165 ||
   166     identity_list *il = IdentityList_to_identity_list(&session->sync_state.keysync.identities, NULL);
   167     if (!il)
   168         return PEP_OUT_OF_MEMORY;
   169     
   170     // BUG: this should be a transaction and been rolled back completely on error
   171     for (identity_list *_il = il; _il && _il->ident; _il = _il->next) {
   172         PEP_STATUS status = set_identity(session, _il->ident);
   173         if (status) {
   174             free_identity_list(il);
   175             return status;
   176         }
   177     }
   178 
   179     free_identity_list(il);
   180 ||
   181 
   182 action ownKeysAreGroupKeys {
   183     call "init_sql" with "sql" {
   184         ||
   185         "select fpr, username, comm_type, lang,"
   186                 "   identity.flags | pgp_keypair.flags"
   187                 "   from identity"
   188                 "   join person on id = identity.user_id"
   189                 "   join pgp_keypair on fpr = identity.main_key_id"
   190                 "   join trust on id = trust.user_id"
   191                 "       and pgp_keypair_fpr = identity.main_key_id"
   192                 "   where identity.is_own = true ;"
   193         ||
   194     }
   195 
   196     ||
   197         identity_list *il = new_identity_list(NULL);
   198         if (!il)
   199             return PEP_OUT_OF_MEMORY;
   200 
   201         pEp_identity *from = session->sync_state.common.from;
   202         identity_list *_il = il;
   203 
   204         int result;
   205         do {
   206             result = sqlite3_step(_sql);
   207             pEp_identity *_identity = NULL;
   208             switch (result) {
   209             case SQLITE_ROW:
   210                 _identity = new_identity(
   211                         from->address,
   212                         (const char *) sqlite3_column_text(_sql, 0),
   213                         from->user_id,
   214                         (const char *) sqlite3_column_text(_sql, 1)
   215                     );
   216                 assert(_identity);
   217                 if (_identity == NULL)
   218                     return PEP_OUT_OF_MEMORY;
   219 
   220                 _identity->comm_type = (PEP_comm_type)
   221                     sqlite3_column_int(_sql, 2);
   222                 const char* const _lang = (const char *)
   223                     sqlite3_column_text(_sql, 3);
   224                 if (_lang && _lang[0]) {
   225                     assert(_lang[0] >= 'a' && _lang[0] <= 'z');
   226                     assert(_lang[1] >= 'a' && _lang[1] <= 'z');
   227                     assert(_lang[2] == 0);
   228                     _identity->lang[0] = _lang[0];
   229                     _identity->lang[1] = _lang[1];
   230                     _identity->lang[2] = 0;
   231                 }
   232                 _identity->flags = (unsigned int)
   233                     sqlite3_column_int(_sql, 4);
   234 
   235                 _il = identity_list_add(_il, _identity);
   236                 if (!_il) {
   237                     free_identity_list(il);
   238                     free_identity(_identity);
   239                     return PEP_OUT_OF_MEMORY;
   240                 }
   241                 break;
   242 
   243             case SQLITE_DONE:
   244                 break;
   245 
   246             default:
   247                 free_identity_list(il);
   248                 return PEP_UNKNOWN_ERROR;
   249             }
   250         } while (result != SQLITE_DONE);
   251 
   252         IdentityList_t *r = IdentityList_from_identity_list(il, &session->sync_state.keysync.identities);
   253         free_identity_list(il);
   254         if (!r)
   255             return PEP_OUT_OF_MEMORY;
   256     ||
   257 }
   258 
   259 action disable;
   260