src/message_api.c
author Edouard Tisserant <edouard@pep-project.org>
Wed, 08 Feb 2017 14:24:12 +0100
changeset 1573 e3c1acfac537
parent 1563 1c7679549bfb
child 1579 267b874fc39f
permissions -rw-r--r--
use _same_fpr to compare fingerprints rather strcasecmp.
vb@1513
     1
// This file is under GNU General Public License 3.0
vb@1513
     2
// see LICENSE.txt
vb@1513
     3
vb@125
     4
#include "pEp_internal.h"
vb@37
     5
#include "message_api.h"
vb@37
     6
vb@130
     7
#include "platform.h"
vb@220
     8
#include "mime.h"
vb@952
     9
#include "sync_fsm.h"
vb@85
    10
vb@37
    11
#include <assert.h>
vb@37
    12
#include <string.h>
vb@39
    13
#include <stdlib.h>
vb@39
    14
vb@926
    15
vb@951
    16
#ifndef _MIN
vb@951
    17
#define _MIN(A, B) ((B) > (A) ? (A) : (B))
vb@190
    18
#endif
vb@951
    19
#ifndef _MAX
vb@951
    20
#define _MAX(A, B) ((B) > (A) ? (B) : (A))
vb@300
    21
#endif
vb@190
    22
vb@235
    23
vb@235
    24
static bool string_equality(const char *s1, const char *s2)
vb@235
    25
{
vb@235
    26
    if (s1 == NULL || s2 == NULL)
vb@235
    27
        return false;
vb@235
    28
vb@235
    29
    assert(s1 && s2);
vb@235
    30
vb@235
    31
    return strcmp(s1, s2) == 0;
vb@235
    32
}
vb@235
    33
vb@235
    34
static bool is_mime_type(const bloblist_t *bl, const char *mt)
vb@235
    35
{
vb@235
    36
    assert(mt);
vb@235
    37
vb@235
    38
    return bl && string_equality(bl->mime_type, mt);
vb@235
    39
}
vb@235
    40
krista@854
    41
//
krista@854
    42
// This function presumes the file ending is a proper substring of the
krista@854
    43
// filename (i.e. if bl->filename is "a.pgp" and fe is ".pgp", it will
krista@854
    44
// return true, but if bl->filename is ".pgp" and fe is ".pgp", it will
krista@854
    45
// return false. This is desired behaviour.
krista@854
    46
//
vb@235
    47
static bool is_fileending(const bloblist_t *bl, const char *fe)
vb@235
    48
{
vb@235
    49
    assert(fe);
krista@1427
    50
krista@853
    51
    if (bl == NULL || bl->filename == NULL || fe == NULL)
vb@235
    52
        return false;
vb@235
    53
vb@235
    54
    assert(bl && bl->filename);
vb@235
    55
vb@235
    56
    size_t fe_len = strlen(fe);
vb@235
    57
    size_t fn_len = strlen(bl->filename);
vb@235
    58
vb@235
    59
    if (fn_len <= fe_len)
vb@235
    60
        return false;
vb@235
    61
vb@235
    62
    assert(fn_len > fe_len);
vb@235
    63
vb@235
    64
    return strcmp(bl->filename + (fn_len - fe_len), fe) == 0;
vb@235
    65
}
vb@235
    66
vb@952
    67
void add_opt_field(message *msg, const char *name, const char *value)
vb@284
    68
{
vb@952
    69
    assert(msg && name && value);
vb@284
    70
vb@284
    71
    if (msg && name && value) {
vb@284
    72
        stringpair_t *pair = new_stringpair(name, value);
vb@284
    73
        if (pair == NULL)
vb@284
    74
            return;
vb@284
    75
vb@284
    76
        stringpair_list_t *field = stringpair_list_add(msg->opt_fields, pair);
vb@284
    77
        if (field == NULL)
Edouard@833
    78
        {
Edouard@833
    79
            free_stringpair(pair);
vb@284
    80
            return;
Edouard@833
    81
        }
vb@284
    82
vb@284
    83
        if (msg->opt_fields == NULL)
vb@284
    84
            msg->opt_fields = field;
vb@284
    85
    }
vb@284
    86
}
vb@284
    87
vb@83
    88
static char * combine_short_and_long(const char *shortmsg, const char *longmsg)
vb@62
    89
{
vb@83
    90
    assert(shortmsg);
vb@83
    91
    assert(strcmp(shortmsg, "pEp") != 0);
vb@855
    92
vb@857
    93
    if (!shortmsg || strcmp(shortmsg, "pEp") == 0) {
vb@857
    94
        if (!longmsg) {
vb@857
    95
            return NULL;
vb@857
    96
        }
vb@857
    97
        else {
vb@857
    98
            char *result = strdup(longmsg);
vb@857
    99
            assert(result);
vb@857
   100
            return result;
vb@857
   101
        }
vb@857
   102
    }
krista@1427
   103
vb@83
   104
    if (longmsg == NULL)
vb@63
   105
        longmsg = "";
vb@63
   106
krista@935
   107
    const char * const subject = "Subject: ";
krista@935
   108
    const size_t SUBJ_LEN = 9;
krista@935
   109
    const char * const newlines = "\n\n";
krista@935
   110
    const size_t NL_LEN = 2;
krista@935
   111
roker@1559
   112
    const size_t bufsize = SUBJ_LEN + strlen(shortmsg) + NL_LEN + strlen(longmsg) + 1;
roker@1559
   113
    char * ptext = calloc(1, bufsize);
vb@109
   114
    assert(ptext);
vb@62
   115
    if (ptext == NULL)
vb@62
   116
        return NULL;
vb@62
   117
krista@935
   118
    strlcpy(ptext, subject, bufsize);
krista@918
   119
    strlcat(ptext, shortmsg, bufsize);
krista@935
   120
    strlcat(ptext, newlines, bufsize);
krista@918
   121
    strlcat(ptext, longmsg, bufsize);
vb@62
   122
vb@62
   123
    return ptext;
vb@62
   124
}
vb@44
   125
krista@853
   126
static int separate_short_and_long(const char *src, char **shortmsg, char **longmsg)
vb@82
   127
{
vb@82
   128
    char *_shortmsg = NULL;
vb@82
   129
    char *_longmsg = NULL;
vb@82
   130
vb@82
   131
    assert(src);
vb@82
   132
    assert(shortmsg);
vb@82
   133
    assert(longmsg);
krista@1427
   134
krista@853
   135
    if (src == NULL || shortmsg == NULL || longmsg == NULL)
krista@853
   136
        return -1;
vb@82
   137
vb@82
   138
    *shortmsg = NULL;
vb@82
   139
    *longmsg = NULL;
vb@82
   140
vb@85
   141
    if (strncasecmp(src, "subject: ", 9) == 0) {
vb@82
   142
        char *line_end = strchr(src, '\n');
vb@311
   143
vb@82
   144
        if (line_end == NULL) {
vb@82
   145
            _shortmsg = strdup(src + 9);
vb@469
   146
            assert(_shortmsg);
vb@82
   147
            if (_shortmsg == NULL)
vb@82
   148
                goto enomem;
vb@82
   149
            // _longmsg = NULL;
vb@82
   150
        }
vb@82
   151
        else {
vb@82
   152
            size_t n = line_end - src;
vb@166
   153
vb@82
   154
            if (*(line_end - 1) == '\r')
vb@166
   155
                _shortmsg = strndup(src + 9, n - 10);
vb@82
   156
            else
vb@166
   157
                _shortmsg = strndup(src + 9, n - 9);
vb@469
   158
            assert(_shortmsg);
vb@82
   159
            if (_shortmsg == NULL)
vb@82
   160
                goto enomem;
vb@166
   161
vb@166
   162
            while (*(src + n) && (*(src + n) == '\n' || *(src + n) == '\r'))
vb@166
   163
                ++n;
vb@166
   164
vb@166
   165
            if (*(src + n)) {
vb@166
   166
                _longmsg = strdup(src + n);
vb@469
   167
                assert(_longmsg);
vb@166
   168
                if (_longmsg == NULL)
vb@166
   169
                    goto enomem;
vb@166
   170
            }
vb@82
   171
        }
vb@82
   172
    }
vb@82
   173
    else {
vb@113
   174
        _shortmsg = strdup("");
vb@469
   175
        assert(_shortmsg);
vb@82
   176
        if (_shortmsg == NULL)
vb@82
   177
            goto enomem;
vb@82
   178
        _longmsg = strdup(src);
vb@469
   179
        assert(_longmsg);
vb@82
   180
        if (_longmsg == NULL)
vb@82
   181
            goto enomem;
vb@82
   182
    }
vb@311
   183
vb@82
   184
    *shortmsg = _shortmsg;
vb@82
   185
    *longmsg = _longmsg;
vb@82
   186
vb@82
   187
    return 0;
vb@82
   188
vb@82
   189
enomem:
vb@82
   190
    free(_shortmsg);
vb@82
   191
    free(_longmsg);
vb@82
   192
vb@82
   193
    return -1;
vb@82
   194
}
vb@82
   195
vb@113
   196
static PEP_STATUS copy_fields(message *dst, const message *src)
vb@113
   197
{
vb@164
   198
    assert(dst);
vb@164
   199
    assert(src);
vb@164
   200
Edouard@840
   201
    if(!(dst && src))
Edouard@840
   202
        return PEP_ILLEGAL_VALUE;
Edouard@840
   203
vb@113
   204
    free_timestamp(dst->sent);
vb@113
   205
    dst->sent = NULL;
vb@113
   206
    if (src->sent) {
vb@113
   207
        dst->sent = timestamp_dup(src->sent);
vb@113
   208
        if (dst->sent == NULL)
vb@113
   209
            return PEP_OUT_OF_MEMORY;
vb@113
   210
    }
vb@113
   211
vb@113
   212
    free_timestamp(dst->recv);
vb@113
   213
    dst->recv = NULL;
vb@113
   214
    if (src->recv) {
vb@113
   215
        dst->recv = timestamp_dup(src->recv);
vb@113
   216
        if (dst->recv == NULL)
vb@113
   217
            return PEP_OUT_OF_MEMORY;
vb@113
   218
    }
vb@113
   219
vb@113
   220
    free_identity(dst->from);
vb@113
   221
    dst->from = NULL;
vb@113
   222
    if (src->from) {
vb@113
   223
        dst->from = identity_dup(src->from);
vb@113
   224
        if (dst->from == NULL)
vb@113
   225
            return PEP_OUT_OF_MEMORY;
vb@113
   226
    }
vb@113
   227
vb@113
   228
    free_identity_list(dst->to);
vb@113
   229
    dst->to = NULL;
vb@274
   230
    if (src->to && src->to->ident) {
vb@113
   231
        dst->to = identity_list_dup(src->to);
vb@113
   232
        if (dst->to == NULL)
vb@113
   233
            return PEP_OUT_OF_MEMORY;
vb@113
   234
    }
vb@113
   235
vb@113
   236
    free_identity(dst->recv_by);
vb@113
   237
    dst->recv_by = NULL;
vb@113
   238
    if (src->recv_by) {
vb@113
   239
        dst->recv_by = identity_dup(src->recv_by);
vb@113
   240
        if (dst->recv_by == NULL)
vb@113
   241
            return PEP_OUT_OF_MEMORY;
vb@113
   242
    }
vb@113
   243
vb@113
   244
    free_identity_list(dst->cc);
vb@113
   245
    dst->cc = NULL;
vb@274
   246
    if (src->cc && src->cc->ident) {
vb@113
   247
        dst->cc = identity_list_dup(src->cc);
vb@113
   248
        if (dst->cc == NULL)
vb@113
   249
            return PEP_OUT_OF_MEMORY;
vb@113
   250
    }
vb@113
   251
vb@113
   252
    free_identity_list(dst->bcc);
vb@113
   253
    dst->bcc = NULL;
vb@274
   254
    if (src->bcc && src->bcc->ident) {
vb@113
   255
        dst->bcc = identity_list_dup(src->bcc);
vb@113
   256
        if (dst->bcc == NULL)
vb@113
   257
            return PEP_OUT_OF_MEMORY;
vb@113
   258
    }
vb@113
   259
vb@113
   260
    free_identity_list(dst->reply_to);
vb@113
   261
    dst->reply_to = NULL;
vb@274
   262
    if (src->reply_to && src->reply_to->ident) {
vb@113
   263
        dst->reply_to = identity_list_dup(src->reply_to);
vb@113
   264
        if (dst->reply_to == NULL)
vb@113
   265
            return PEP_OUT_OF_MEMORY;
vb@113
   266
    }
vb@113
   267
vb@113
   268
    free_stringlist(dst->in_reply_to);
vb@113
   269
    dst->in_reply_to = NULL;
vb@274
   270
    if (src->in_reply_to && src->in_reply_to->value) {
vb@113
   271
        dst->in_reply_to = stringlist_dup(src->in_reply_to);
vb@113
   272
        if (dst->in_reply_to == NULL)
vb@113
   273
            return PEP_OUT_OF_MEMORY;
vb@113
   274
    }
vb@113
   275
vb@113
   276
    free_stringlist(dst->references);
vb@113
   277
    dst->references = NULL;
vb@113
   278
    if (src->references) {
vb@113
   279
        dst->references = stringlist_dup(src->references);
vb@113
   280
        if (dst->references == NULL)
vb@113
   281
            return PEP_OUT_OF_MEMORY;
vb@113
   282
    }
vb@113
   283
vb@113
   284
    free_stringlist(dst->keywords);
vb@113
   285
    dst->keywords = NULL;
vb@274
   286
    if (src->keywords && src->keywords->value) {
vb@113
   287
        dst->keywords = stringlist_dup(src->keywords);
vb@113
   288
        if (dst->keywords == NULL)
vb@113
   289
            return PEP_OUT_OF_MEMORY;
vb@113
   290
    }
vb@113
   291
vb@113
   292
    free(dst->comments);
vb@113
   293
    dst->comments = NULL;
vb@113
   294
    if (src->comments) {
vb@113
   295
        dst->comments = strdup(src->comments);
vb@113
   296
        assert(dst->comments);
vb@113
   297
        if (dst->comments == NULL)
vb@113
   298
            return PEP_OUT_OF_MEMORY;
vb@113
   299
    }
vb@113
   300
vb@1092
   301
    free_stringpair_list(dst->opt_fields);
vb@1092
   302
    dst->opt_fields = NULL;
vb@1092
   303
    if (src->opt_fields) {
vb@1092
   304
        dst->opt_fields = stringpair_list_dup(src->opt_fields);
vb@1092
   305
        if (dst->opt_fields == NULL)
vb@1092
   306
            return PEP_OUT_OF_MEMORY;
vb@1092
   307
    }
vb@1092
   308
vb@113
   309
    return PEP_STATUS_OK;
vb@113
   310
}
vb@113
   311
vb@81
   312
static message * clone_to_empty_message(const message * src)
vb@80
   313
{
vb@113
   314
    PEP_STATUS status;
vb@80
   315
    message * msg = NULL;
vb@80
   316
vb@81
   317
    assert(src);
krista@853
   318
    if (src == NULL)
krista@853
   319
        return NULL;
vb@81
   320
vb@113
   321
    msg = calloc(1, sizeof(message));
vb@113
   322
    assert(msg);
vb@80
   323
    if (msg == NULL)
vb@80
   324
        goto enomem;
vb@80
   325
vb@82
   326
    msg->dir = src->dir;
vb@82
   327
vb@113
   328
    status = copy_fields(msg, src);
vb@113
   329
    if (status != PEP_STATUS_OK)
vb@113
   330
        goto enomem;
vb@81
   331
vb@80
   332
    return msg;
vb@80
   333
vb@80
   334
enomem:
vb@113
   335
    free_message(msg);
vb@80
   336
    return NULL;
vb@80
   337
}
vb@80
   338
vb@260
   339
static PEP_STATUS encrypt_PGP_MIME(
vb@311
   340
    PEP_SESSION session,
vb@311
   341
    const message *src,
vb@311
   342
    stringlist_t *keys,
vb@311
   343
    message *dst
vb@260
   344
    )
vb@260
   345
{
vb@260
   346
    PEP_STATUS status = PEP_STATUS_OK;
vb@260
   347
    bool free_ptext = false;
vb@468
   348
    char *ptext = NULL;
Edouard@882
   349
    char *ctext = NULL;
vb@260
   350
    char *mimetext = NULL;
vb@260
   351
    size_t csize;
vb@260
   352
    assert(dst->longmsg == NULL);
vb@260
   353
    dst->enc_format = PEP_enc_PGP_MIME;
vb@260
   354
vb@260
   355
    if (src->shortmsg && strcmp(src->shortmsg, "pEp") != 0) {
vb@466
   356
        if (session->unencrypted_subject) {
vb@466
   357
            dst->shortmsg = strdup(src->shortmsg);
vb@469
   358
            assert(dst->shortmsg);
vb@466
   359
            if (dst->shortmsg == NULL)
vb@466
   360
                goto enomem;
vb@466
   361
            ptext = src->longmsg;
vb@466
   362
        }
vb@466
   363
        else {
vb@466
   364
            ptext = combine_short_and_long(src->shortmsg, src->longmsg);
vb@466
   365
            if (ptext == NULL)
vb@466
   366
                goto enomem;
vb@466
   367
            free_ptext = true;
vb@466
   368
        }
vb@260
   369
    }
vb@260
   370
    else if (src->longmsg) {
vb@260
   371
        ptext = src->longmsg;
vb@260
   372
    }
vb@260
   373
    else {
vb@260
   374
        ptext = "pEp";
vb@260
   375
    }
vb@260
   376
vb@260
   377
    message *_src = calloc(1, sizeof(message));
vb@260
   378
    assert(_src);
vb@260
   379
    if (_src == NULL)
vb@260
   380
        goto enomem;
vb@260
   381
    _src->longmsg = ptext;
vb@260
   382
    _src->longmsg_formatted = src->longmsg_formatted;
vb@260
   383
    _src->attachments = src->attachments;
vb@260
   384
    _src->enc_format = PEP_enc_none;
vb@260
   385
    status = mime_encode_message(_src, true, &mimetext);
vb@260
   386
    assert(status == PEP_STATUS_OK);
krista@853
   387
    if (status != PEP_STATUS_OK)
krista@853
   388
        goto pep_error;
krista@1427
   389
Edouard@371
   390
    if (free_ptext){
vb@260
   391
        free(ptext);
Edouard@371
   392
        free_ptext=0;
Edouard@371
   393
    }
vb@260
   394
    free(_src);
vb@260
   395
    assert(mimetext);
vb@260
   396
    if (mimetext == NULL)
vb@260
   397
        goto pep_error;
vb@260
   398
vb@260
   399
    status = encrypt_and_sign(session, keys, mimetext, strlen(mimetext),
vb@311
   400
        &ctext, &csize);
vb@260
   401
    free(mimetext);
vb@260
   402
    if (ctext == NULL)
vb@260
   403
        goto pep_error;
vb@260
   404
vb@260
   405
    dst->longmsg = strdup("this message was encrypted with p≡p "
lix@487
   406
        "https://pEp-project.org");
vb@469
   407
    assert(dst->longmsg);
vb@260
   408
    if (dst->longmsg == NULL)
vb@260
   409
        goto enomem;
vb@260
   410
vb@260
   411
    char *v = strdup("Version: 1");
vb@469
   412
    assert(v);
vb@260
   413
    if (v == NULL)
vb@260
   414
        goto enomem;
vb@260
   415
roker@801
   416
    bloblist_t *_a = new_bloblist(v, strlen(v), "application/pgp-encrypted", NULL);
vb@260
   417
    if (_a == NULL)
vb@260
   418
        goto enomem;
vb@260
   419
    dst->attachments = _a;
vb@288
   420
Edouard@882
   421
    _a = bloblist_add(_a, ctext, csize, "application/octet-stream",
Edouard@427
   422
        "msg.asc");
vb@260
   423
    if (_a == NULL)
vb@260
   424
        goto enomem;
vb@260
   425
vb@260
   426
    return PEP_STATUS_OK;
vb@260
   427
vb@260
   428
enomem:
vb@260
   429
    status = PEP_OUT_OF_MEMORY;
vb@260
   430
vb@260
   431
pep_error:
vb@260
   432
    if (free_ptext)
vb@260
   433
        free(ptext);
Edouard@882
   434
    free(ctext);
vb@260
   435
    return status;
vb@260
   436
}
vb@260
   437
vb@260
   438
static PEP_STATUS encrypt_PGP_in_pieces(
vb@311
   439
    PEP_SESSION session,
vb@311
   440
    const message *src,
vb@311
   441
    stringlist_t *keys,
vb@311
   442
    message *dst
vb@260
   443
    )
vb@260
   444
{
vb@260
   445
    PEP_STATUS status = PEP_STATUS_OK;
Edouard@882
   446
    char *ctext = NULL;
vb@260
   447
    size_t csize;
vb@468
   448
    char *ptext = NULL;
vb@466
   449
    bool free_ptext = false;
vb@260
   450
vb@260
   451
    assert(dst->longmsg == NULL);
vb@260
   452
    assert(dst->attachments == NULL);
vb@260
   453
vb@260
   454
    dst->enc_format = PEP_enc_pieces;
vb@260
   455
vb@320
   456
    if (src->shortmsg && src->shortmsg[0] && strcmp(src->shortmsg, "pEp") != 0) {
vb@466
   457
        if (session->unencrypted_subject) {
vb@466
   458
            dst->shortmsg = strdup(src->shortmsg);
vb@469
   459
            assert(dst->shortmsg);
vb@466
   460
            if (dst->shortmsg == NULL)
vb@466
   461
                goto enomem;
vb@466
   462
            ptext = src->longmsg;
vb@466
   463
        }
vb@466
   464
        else {
vb@466
   465
            ptext = combine_short_and_long(src->shortmsg, src->longmsg);
vb@466
   466
            if (ptext == NULL)
vb@466
   467
                goto enomem;
vb@466
   468
            free_ptext = true;
vb@466
   469
        }
vb@260
   470
vb@260
   471
        status = encrypt_and_sign(session, keys, ptext, strlen(ptext), &ctext,
vb@311
   472
            &csize);
vb@466
   473
        if (free_ptext)
vb@466
   474
            free(ptext);
vb@466
   475
        free_ptext = false;
vb@288
   476
        if (ctext) {
Edouard@882
   477
            dst->longmsg = ctext;
vb@288
   478
        }
vb@288
   479
        else {
vb@260
   480
            goto pep_error;
vb@288
   481
        }
vb@260
   482
    }
vb@320
   483
    else if (src->longmsg && src->longmsg[0]) {
vb@466
   484
        ptext = src->longmsg;
vb@260
   485
        status = encrypt_and_sign(session, keys, ptext, strlen(ptext), &ctext,
vb@311
   486
            &csize);
vb@288
   487
        if (ctext) {
Edouard@882
   488
            dst->longmsg = ctext;
vb@288
   489
        }
vb@288
   490
        else {
vb@260
   491
            goto pep_error;
vb@288
   492
        }
vb@284
   493
    }
vb@284
   494
    else {
vb@284
   495
        dst->longmsg = strdup("");
vb@469
   496
        assert(dst->longmsg);
vb@284
   497
        if (dst->longmsg == NULL)
vb@284
   498
            goto enomem;
vb@260
   499
    }
vb@260
   500
vb@320
   501
    if (src->longmsg_formatted && src->longmsg_formatted[0]) {
vb@466
   502
        ptext = src->longmsg_formatted;
vb@260
   503
        status = encrypt_and_sign(session, keys, ptext, strlen(ptext), &ctext,
vb@311
   504
            &csize);
vb@260
   505
        if (ctext) {
vb@288
   506
Edouard@882
   507
            bloblist_t *_a = bloblist_add(dst->attachments, ctext, csize,
vb@311
   508
                "application/octet-stream", "PGPexch.htm.pgp");
vb@284
   509
            if (_a == NULL)
vb@260
   510
                goto enomem;
vb@284
   511
            if (dst->attachments == NULL)
vb@284
   512
                dst->attachments = _a;
vb@260
   513
        }
vb@260
   514
        else {
vb@260
   515
            goto pep_error;
vb@260
   516
        }
vb@260
   517
    }
vb@260
   518
vb@260
   519
    if (src->attachments) {
vb@284
   520
        if (dst->attachments == NULL) {
vb@284
   521
            dst->attachments = new_bloblist(NULL, 0, NULL, NULL);
vb@284
   522
            if (dst->attachments == NULL)
vb@284
   523
                goto enomem;
vb@284
   524
        }
vb@260
   525
vb@284
   526
        bloblist_t *_s = src->attachments;
vb@284
   527
        bloblist_t *_d = dst->attachments;
vb@284
   528
Edouard@754
   529
        for (int n = 0; _s; _s = _s->next) {
Edouard@754
   530
            if (_s->value == NULL && _s->size == 0) {
Edouard@754
   531
                _d = bloblist_add(_d, NULL, 0, _s->mime_type, _s->filename);
vb@260
   532
                if (_d == NULL)
vb@260
   533
                    goto enomem;
vb@260
   534
            }
vb@260
   535
            else {
Edouard@754
   536
                size_t psize = _s->size;
Edouard@754
   537
                ptext = _s->value;
Edouard@754
   538
                status = encrypt_and_sign(session, keys, ptext, psize, &ctext,
Edouard@754
   539
                    &csize);
Edouard@754
   540
                if (ctext) {
Edouard@754
   541
                    char *filename = NULL;
Edouard@754
   542
Edouard@754
   543
                    if (_s->filename) {
Edouard@754
   544
                        size_t len = strlen(_s->filename);
krista@975
   545
                        size_t bufsize = len + 5; // length of .pgp extension + NUL
krista@975
   546
                        filename = calloc(1, bufsize);
Edouard@754
   547
                        if (filename == NULL)
Edouard@754
   548
                            goto enomem;
Edouard@754
   549
krista@975
   550
                        strlcpy(filename, _s->filename, bufsize);
krista@975
   551
                        strlcat(filename, ".pgp", bufsize);
Edouard@754
   552
                    }
Edouard@754
   553
                    else {
Edouard@754
   554
                        filename = calloc(1, 20);
Edouard@754
   555
                        if (filename == NULL)
Edouard@754
   556
                            goto enomem;
Edouard@754
   557
Edouard@754
   558
                        ++n;
Edouard@754
   559
                        n &= 0xffff;
Edouard@754
   560
                        snprintf(filename, 20, "Attachment%d.pgp", n);
Edouard@754
   561
                    }
Edouard@754
   562
Edouard@882
   563
                    _d = bloblist_add(_d, ctext, csize, "application/octet-stream",
Edouard@754
   564
                        filename);
roker@866
   565
                    free(filename);
Edouard@754
   566
                    if (_d == NULL)
Edouard@754
   567
                        goto enomem;
Edouard@754
   568
                }
Edouard@754
   569
                else {
Edouard@754
   570
                    goto pep_error;
Edouard@754
   571
                }
vb@260
   572
            }
vb@260
   573
        }
vb@260
   574
    }
vb@260
   575
vb@260
   576
    return PEP_STATUS_OK;
vb@260
   577
vb@260
   578
enomem:
vb@260
   579
    status = PEP_OUT_OF_MEMORY;
vb@260
   580
vb@260
   581
pep_error:
vb@466
   582
    if (free_ptext)
vb@466
   583
        free(ptext);
vb@260
   584
    return status;
vb@260
   585
}
vb@260
   586
vb@311
   587
static char * keylist_to_string(const stringlist_t *keylist)
vb@311
   588
{
vb@311
   589
    if (keylist) {
vb@311
   590
        size_t size = stringlist_length(keylist);
vb@311
   591
vb@311
   592
        const stringlist_t *_kl;
vb@311
   593
        for (_kl = keylist; _kl && _kl->value; _kl = _kl->next) {
vb@311
   594
            size += strlen(_kl->value);
vb@311
   595
        }
vb@311
   596
vb@311
   597
        char *result = calloc(1, size);
vb@311
   598
        if (result == NULL)
vb@311
   599
            return NULL;
vb@311
   600
vb@311
   601
        char *_r = result;
vb@311
   602
        for (_kl = keylist; _kl && _kl->value; _kl = _kl->next) {
vb@311
   603
            _r = stpcpy(_r, _kl->value);
vb@311
   604
            if (_kl->next && _kl->next->value)
vb@311
   605
                _r = stpcpy(_r, ",");
vb@311
   606
        }
vb@311
   607
vb@311
   608
        return result;
vb@311
   609
    }
vb@311
   610
    else {
vb@311
   611
        return NULL;
vb@311
   612
    }
vb@311
   613
}
vb@311
   614
vb@1004
   615
static const char * rating_to_string(PEP_rating rating)
vb@311
   616
{
vb@1004
   617
    switch (rating) {
vb@311
   618
    case PEP_rating_cannot_decrypt:
vb@311
   619
        return "cannot_decrypt";
vb@311
   620
    case PEP_rating_have_no_key:
vb@311
   621
        return "have_no_key";
vb@311
   622
    case PEP_rating_unencrypted:
vb@311
   623
        return "unencrypted";
vb@486
   624
    case PEP_rating_unencrypted_for_some:
vb@486
   625
        return "unencrypted_for_some";
vb@311
   626
    case PEP_rating_unreliable:
vb@311
   627
        return "unreliable";
vb@311
   628
    case PEP_rating_reliable:
vb@311
   629
        return "reliable";
vb@311
   630
    case PEP_rating_trusted:
vb@311
   631
        return "trusted";
vb@311
   632
    case PEP_rating_trusted_and_anonymized:
vb@311
   633
        return "trusted_and_anonymized";
vb@311
   634
    case PEP_rating_fully_anonymous:
vb@311
   635
        return "fully_anonymous";
Edouard@442
   636
    case PEP_rating_mistrust:
Edouard@442
   637
        return "mistrust";
Edouard@442
   638
    case PEP_rating_b0rken:
Edouard@442
   639
        return "b0rken";
vb@311
   640
    case PEP_rating_under_attack:
krista@961
   641
        return "under_attack";
vb@311
   642
    default:
vb@311
   643
        return "undefined";
vb@311
   644
    }
vb@311
   645
}
vb@311
   646
vb@311
   647
static void decorate_message(
vb@311
   648
    message *msg,
vb@1004
   649
    PEP_rating rating,
vb@311
   650
    stringlist_t *keylist
vb@311
   651
    )
vb@311
   652
{
vb@311
   653
    assert(msg);
vb@311
   654
krista@942
   655
    add_opt_field(msg, "X-pEp-Version", PEP_VERSION);
krista@1427
   656
vb@1004
   657
    if (rating != PEP_rating_undefined)
vb@1004
   658
        add_opt_field(msg, "X-EncStatus", rating_to_string(rating));
vb@311
   659
vb@311
   660
    if (keylist) {
vb@311
   661
        char *_keylist = keylist_to_string(keylist);
vb@311
   662
        add_opt_field(msg, "X-KeyList", _keylist);
vb@311
   663
        free(_keylist);
vb@311
   664
    }
vb@311
   665
}
vb@311
   666
vb@1004
   667
static PEP_rating _rating(PEP_comm_type ct, PEP_rating rating)
vb@311
   668
{
vb@311
   669
    if (ct == PEP_ct_unknown)
vb@311
   670
        return PEP_rating_undefined;
krista@1427
   671
krista@1243
   672
    else if (ct == PEP_ct_key_not_found)
krista@1243
   673
        return PEP_rating_have_no_key;
krista@1427
   674
vb@311
   675
    else if (ct == PEP_ct_compromized)
vb@311
   676
        return PEP_rating_under_attack;
vb@311
   677
Edouard@442
   678
    else if (ct == PEP_ct_mistrusted)
Edouard@442
   679
        return PEP_rating_mistrust;
krista@1427
   680
vb@1004
   681
    if (rating == PEP_rating_unencrypted_for_some)
vb@486
   682
        return PEP_rating_unencrypted_for_some;
vb@486
   683
vb@486
   684
    if (ct == PEP_ct_no_encryption || ct == PEP_ct_no_encrypted_channel ||
vb@486
   685
            ct == PEP_ct_my_key_not_included) {
vb@1004
   686
        if (rating > PEP_rating_unencrypted_for_some)
vb@486
   687
            return PEP_rating_unencrypted_for_some;
vb@486
   688
        else
vb@486
   689
            return PEP_rating_unencrypted;
vb@486
   690
    }
vb@486
   691
vb@1004
   692
    if (rating == PEP_rating_unencrypted)
vb@486
   693
        return PEP_rating_unencrypted_for_some;
vb@486
   694
vb@486
   695
    if (ct >= PEP_ct_confirmed_enc_anon)
vb@311
   696
        return PEP_rating_trusted_and_anonymized;
vb@311
   697
vb@311
   698
    else if (ct >= PEP_ct_strong_encryption)
vb@311
   699
        return PEP_rating_trusted;
vb@311
   700
vb@311
   701
    else if (ct >= PEP_ct_strong_but_unconfirmed && ct < PEP_ct_confirmed)
vb@311
   702
        return PEP_rating_reliable;
vb@311
   703
vb@311
   704
    else
vb@311
   705
        return PEP_rating_unreliable;
vb@311
   706
}
vb@311
   707
vb@311
   708
static bool is_encrypted_attachment(const bloblist_t *blob)
vb@311
   709
{
vb@311
   710
    assert(blob);
vb@311
   711
krista@853
   712
    if (blob == NULL || blob->filename == NULL)
vb@311
   713
        return false;
krista@1427
   714
roker@1559
   715
    char *ext = strrchr(blob->filename, '.');
vb@311
   716
    if (ext == NULL)
vb@311
   717
        return false;
vb@311
   718
vb@320
   719
    if (strcmp(blob->mime_type, "application/octet-stream") == 0) {
vb@311
   720
        if (strcmp(ext, ".pgp") == 0 || strcmp(ext, ".gpg") == 0 ||
vb@311
   721
            strcmp(ext, ".asc") == 0)
vb@311
   722
            return true;
vb@311
   723
    }
vb@320
   724
    else if (strcmp(blob->mime_type, "text/plain") == 0) {
vb@311
   725
        if (strcmp(ext, ".asc") == 0)
vb@311
   726
            return true;
vb@311
   727
    }
vb@311
   728
vb@311
   729
    return false;
vb@311
   730
}
vb@311
   731
vb@311
   732
static bool is_encrypted_html_attachment(const bloblist_t *blob)
vb@311
   733
{
vb@311
   734
    assert(blob);
vb@311
   735
    assert(blob->filename);
krista@853
   736
    if (blob == NULL || blob->filename == NULL)
krista@853
   737
        return false;
vb@311
   738
vb@311
   739
    if (strncmp(blob->filename, "PGPexch.htm.", 12) == 0) {
vb@311
   740
        if (strcmp(blob->filename + 11, ".pgp") == 0 ||
vb@311
   741
            strcmp(blob->filename + 11, ".asc") == 0)
vb@311
   742
            return true;
vb@311
   743
    }
vb@311
   744
vb@311
   745
    return false;
vb@311
   746
}
vb@311
   747
vb@311
   748
static char * without_double_ending(const char *filename)
vb@311
   749
{
vb@311
   750
    assert(filename);
krista@853
   751
    if (filename == NULL)
krista@853
   752
        return NULL;
krista@1427
   753
roker@862
   754
    char *ext = strrchr(filename, '.');
vb@311
   755
    if (ext == NULL)
vb@311
   756
        return NULL;
vb@311
   757
vb@469
   758
    char *result = strndup(filename, ext - filename);
vb@469
   759
    assert(result);
vb@469
   760
    return result;
vb@311
   761
}
vb@311
   762
vb@1004
   763
static PEP_rating decrypt_rating(PEP_STATUS status)
vb@311
   764
{
vb@311
   765
    switch (status) {
vb@311
   766
    case PEP_UNENCRYPTED:
vb@311
   767
    case PEP_VERIFIED:
vb@311
   768
    case PEP_VERIFY_NO_KEY:
vb@311
   769
    case PEP_VERIFIED_AND_TRUSTED:
vb@311
   770
        return PEP_rating_unencrypted;
vb@311
   771
vb@311
   772
    case PEP_DECRYPTED:
vb@311
   773
        return PEP_rating_unreliable;
vb@311
   774
vb@311
   775
    case PEP_DECRYPTED_AND_VERIFIED:
vb@311
   776
        return PEP_rating_reliable;
vb@311
   777
vb@311
   778
    case PEP_DECRYPT_NO_KEY:
vb@311
   779
        return PEP_rating_have_no_key;
vb@311
   780
vb@311
   781
    case PEP_DECRYPT_WRONG_FORMAT:
vb@311
   782
    case PEP_CANNOT_DECRYPT_UNKNOWN:
vb@311
   783
        return PEP_rating_cannot_decrypt;
vb@311
   784
vb@311
   785
    default:
vb@311
   786
        return PEP_rating_undefined;
vb@311
   787
    }
vb@311
   788
}
vb@311
   789
vb@1004
   790
static PEP_rating key_rating(PEP_SESSION session, const char *fpr)
vb@311
   791
{
vb@311
   792
    PEP_comm_type comm_type = PEP_ct_unknown;
vb@311
   793
vb@311
   794
    assert(session);
vb@311
   795
    assert(fpr);
krista@1427
   796
krista@853
   797
    if (session == NULL || fpr == NULL)
krista@853
   798
        return PEP_rating_undefined;
vb@311
   799
vb@311
   800
    PEP_STATUS status = get_key_rating(session, fpr, &comm_type);
vb@311
   801
    if (status != PEP_STATUS_OK)
vb@311
   802
        return PEP_rating_undefined;
vb@311
   803
vb@486
   804
    return _rating(comm_type, PEP_rating_undefined);
vb@311
   805
}
vb@311
   806
vb@1004
   807
static PEP_rating keylist_rating(PEP_SESSION session, stringlist_t *keylist)
vb@311
   808
{
vb@1004
   809
    PEP_rating rating = PEP_rating_reliable;
vb@311
   810
vb@311
   811
    assert(keylist && keylist->value);
vb@311
   812
    if (keylist == NULL || keylist->value == NULL)
vb@486
   813
        return PEP_rating_undefined;
vb@311
   814
vb@311
   815
    stringlist_t *_kl;
vb@311
   816
    for (_kl = keylist; _kl && _kl->value; _kl = _kl->next) {
vb@311
   817
        PEP_comm_type ct;
vb@311
   818
        PEP_STATUS status;
vb@311
   819
vb@1004
   820
        PEP_rating _rating_ = key_rating(session, _kl->value);
vb@1004
   821
        if (_rating_ <= PEP_rating_mistrust)
vb@1004
   822
            return _rating_;
vb@311
   823
vb@1004
   824
        if (rating == PEP_rating_undefined)
vb@1004
   825
            rating = _rating_;
vb@486
   826
vb@1004
   827
        if (_rating_ >= PEP_rating_reliable) {
vb@311
   828
            status = least_trust(session, _kl->value, &ct);
vb@311
   829
            if (status != PEP_STATUS_OK)
vb@311
   830
                return PEP_rating_undefined;
edouard@1156
   831
            if (ct == PEP_ct_unknown){
edouard@1156
   832
                if (rating >= PEP_rating_reliable){
edouard@1154
   833
                    rating = PEP_rating_reliable;
edouard@1156
   834
                }
edouard@1156
   835
            }
edouard@1156
   836
            else{
vb@1004
   837
                rating = _rating(ct, rating);
edouard@1156
   838
            }
vb@486
   839
        }
vb@1004
   840
        else if (_rating_ == PEP_rating_unencrypted) {
vb@1004
   841
            if (rating > PEP_rating_unencrypted_for_some)
vb@1004
   842
                rating = PEP_rating_unencrypted_for_some;
vb@311
   843
        }
vb@311
   844
    }
vb@311
   845
vb@1004
   846
    return rating;
vb@311
   847
}
vb@311
   848
vb@311
   849
static PEP_comm_type _get_comm_type(
vb@311
   850
    PEP_SESSION session,
vb@311
   851
    PEP_comm_type max_comm_type,
vb@311
   852
    pEp_identity *ident
vb@311
   853
    )
vb@311
   854
{
vb@311
   855
    PEP_STATUS status = update_identity(session, ident);
vb@311
   856
vb@311
   857
    if (max_comm_type == PEP_ct_compromized)
vb@311
   858
        return PEP_ct_compromized;
krista@1427
   859
Edouard@510
   860
    if (max_comm_type == PEP_ct_mistrusted)
Edouard@510
   861
        return PEP_ct_mistrusted;
vb@311
   862
vb@311
   863
    if (status == PEP_STATUS_OK) {
vb@311
   864
        if (ident->comm_type == PEP_ct_compromized)
vb@311
   865
            return PEP_ct_compromized;
Edouard@510
   866
        else if (ident->comm_type == PEP_ct_mistrusted)
Edouard@510
   867
            return PEP_ct_mistrusted;
vb@311
   868
        else
vb@951
   869
            return _MIN(max_comm_type, ident->comm_type);
vb@311
   870
    }
vb@311
   871
    else {
vb@311
   872
        return PEP_ct_unknown;
vb@311
   873
    }
vb@311
   874
}
vb@311
   875
vb@731
   876
static void free_bl_entry(bloblist_t *bl)
vb@731
   877
{
vb@731
   878
    if (bl) {
vb@731
   879
        free(bl->value);
vb@731
   880
        free(bl->mime_type);
vb@731
   881
        free(bl->filename);
vb@731
   882
        free(bl);
vb@731
   883
    }
vb@731
   884
}
vb@731
   885
vb@731
   886
static bool is_key(const bloblist_t *bl)
vb@731
   887
{
Edouard@728
   888
    return (// workaround for Apple Mail bugs
Edouard@728
   889
            (is_mime_type(bl, "application/x-apple-msg-attachment") &&
Edouard@728
   890
             is_fileending(bl, ".asc")) ||
Edouard@728
   891
            // as binary, by file name
Edouard@728
   892
            ((bl->mime_type == NULL ||
Edouard@728
   893
              is_mime_type(bl, "application/octet-stream")) &&
Edouard@728
   894
             (is_fileending(bl, ".pgp") || is_fileending(bl, ".gpg") ||
Edouard@728
   895
                    is_fileending(bl, ".key") || is_fileending(bl, ".asc"))) ||
krista@1427
   896
            // explicit mime type
Edouard@728
   897
            is_mime_type(bl, "application/pgp-keys") ||
Edouard@728
   898
            // as text, by file name
Edouard@728
   899
            (is_mime_type(bl, "text/plain") &&
Edouard@728
   900
             (is_fileending(bl, ".pgp") || is_fileending(bl, ".gpg") ||
Edouard@728
   901
                    is_fileending(bl, ".key") || is_fileending(bl, ".asc")))
Edouard@728
   902
           );
vb@731
   903
}
vb@731
   904
vb@731
   905
static void remove_attached_keys(message *msg)
vb@731
   906
{
vb@731
   907
    if (msg) {
vb@731
   908
        bloblist_t *last = NULL;
vb@731
   909
        for (bloblist_t *bl = msg->attachments; bl && bl->value; ) {
vb@731
   910
            bloblist_t *next = bl->next;
vb@731
   911
vb@731
   912
            if (is_key(bl)) {
vb@731
   913
                if (last) {
vb@731
   914
                    last->next = next;
vb@731
   915
                }
vb@731
   916
                else {
vb@731
   917
                    msg->attachments = next;
vb@731
   918
                }
vb@731
   919
                free_bl_entry(bl);
vb@731
   920
            }
vb@731
   921
            else {
vb@731
   922
                last = bl;
vb@731
   923
            }
vb@731
   924
            bl = next;
vb@731
   925
        }
vb@731
   926
    }
vb@731
   927
}
vb@731
   928
Edouard@734
   929
bool import_attached_keys(
krista@1427
   930
        PEP_SESSION session,
Edouard@728
   931
        const message *msg,
Edouard@728
   932
        identity_list **private_idents
Edouard@728
   933
    )
vb@311
   934
{
vb@311
   935
    assert(session);
vb@311
   936
    assert(msg);
krista@1427
   937
krista@853
   938
    if (session == NULL || msg == NULL)
krista@853
   939
        return false;
vb@311
   940
vb@731
   941
    bool remove = false;
vb@731
   942
vb@908
   943
    int i = 0;
roker@1559
   944
    for (bloblist_t *bl = msg->attachments; i < MAX_KEYS_TO_IMPORT && bl && bl->value;
krista@1427
   945
            bl = bl->next, i++)
Edouard@747
   946
    {
vb@908
   947
        if (bl && bl->value && bl->size && bl->size < MAX_KEY_SIZE
krista@1427
   948
                && is_key(bl))
Edouard@728
   949
        {
Edouard@728
   950
            import_key(session, bl->value, bl->size, private_idents);
vb@731
   951
            remove = true;
vb@311
   952
        }
vb@311
   953
    }
vb@731
   954
    return remove;
vb@311
   955
}
vb@311
   956
Edouard@694
   957
Edouard@694
   958
PEP_STATUS _attach_key(PEP_SESSION session, const char* fpr, message *msg)
vb@311
   959
{
roker@1559
   960
    char *keydata = NULL;
vb@311
   961
    size_t size;
vb@311
   962
Edouard@694
   963
    PEP_STATUS status = export_key(session, fpr, &keydata, &size);
Edouard@694
   964
    assert(status == PEP_STATUS_OK);
Edouard@694
   965
    if (status != PEP_STATUS_OK)
Edouard@694
   966
        return status;
Edouard@694
   967
    assert(size);
krista@1427
   968
roker@1559
   969
     bloblist_t *bl = bloblist_add(msg->attachments, keydata, size, "application/pgp-keys",
Edouard@694
   970
                      "pEpkey.asc");
krista@1427
   971
Edouard@694
   972
    if (msg->attachments == NULL && bl)
Edouard@694
   973
        msg->attachments = bl;
Edouard@694
   974
Edouard@694
   975
    return PEP_STATUS_OK;
Edouard@694
   976
}
Edouard@694
   977
Edouard@694
   978
#define ONE_WEEK (7*24*3600)
Edouard@694
   979
Edouard@694
   980
void attach_own_key(PEP_SESSION session, message *msg)
Edouard@694
   981
{
vb@311
   982
    assert(session);
vb@311
   983
    assert(msg);
krista@1427
   984
Edouard@558
   985
    if (msg->dir == PEP_dir_incoming)
Edouard@558
   986
        return;
Edouard@558
   987
vb@311
   988
    assert(msg->from && msg->from->fpr);
vb@311
   989
    if (msg->from == NULL || msg->from->fpr == NULL)
vb@311
   990
        return;
vb@311
   991
Edouard@694
   992
    if(_attach_key(session, msg->from->fpr, msg) != PEP_STATUS_OK)
vb@311
   993
        return;
krista@1427
   994
Edouard@694
   995
    char *revoked_fpr = NULL;
Edouard@694
   996
    uint64_t revocation_date = 0;
krista@1427
   997
Edouard@694
   998
    if(get_revoked(session, msg->from->fpr,
Edouard@694
   999
                   &revoked_fpr, &revocation_date) == PEP_STATUS_OK &&
Edouard@694
  1000
       revoked_fpr != NULL)
Edouard@694
  1001
    {
Edouard@694
  1002
        time_t now = time(NULL);
krista@1427
  1003
Edouard@694
  1004
        if (now < (time_t)revocation_date + ONE_WEEK)
Edouard@694
  1005
        {
Edouard@694
  1006
            _attach_key(session, revoked_fpr, msg);
Edouard@694
  1007
        }
Edouard@694
  1008
    }
Edouard@694
  1009
    free(revoked_fpr);
vb@311
  1010
}
vb@311
  1011
vb@311
  1012
PEP_cryptotech determine_encryption_format(message *msg)
vb@311
  1013
{
vb@311
  1014
    assert(msg);
krista@1427
  1015
vb@311
  1016
    if (is_PGP_message_text(msg->longmsg)) {
vb@311
  1017
        msg->enc_format = PEP_enc_pieces;
vb@311
  1018
        return PEP_crypt_OpenPGP;
vb@311
  1019
    }
vb@311
  1020
    else if (msg->attachments && msg->attachments->next &&
vb@311
  1021
            is_mime_type(msg->attachments, "application/pgp-encrypted") &&
vb@311
  1022
            is_PGP_message_text(msg->attachments->next->value)
vb@311
  1023
        ) {
vb@311
  1024
        msg->enc_format = PEP_enc_PGP_MIME;
vb@311
  1025
        return PEP_crypt_OpenPGP;
vb@311
  1026
    }
edouard@1557
  1027
    else if (msg->attachments && msg->attachments->next &&
edouard@1557
  1028
            is_mime_type(msg->attachments->next, "application/pgp-encrypted") &&
edouard@1557
  1029
            is_PGP_message_text(msg->attachments->value)
edouard@1557
  1030
        ) {
edouard@1557
  1031
        msg->enc_format = PEP_enc_PGP_MIME_Outlook1;
edouard@1557
  1032
        return PEP_crypt_OpenPGP;
edouard@1557
  1033
    }
vb@311
  1034
    else {
vb@311
  1035
        msg->enc_format = PEP_enc_none;
vb@311
  1036
        return PEP_crypt_none;
vb@311
  1037
    }
vb@311
  1038
}
vb@311
  1039
vb@48
  1040
DYNAMIC_API PEP_STATUS encrypt_message(
vb@37
  1041
        PEP_SESSION session,
vb@113
  1042
        message *src,
vb@37
  1043
        stringlist_t * extra,
vb@38
  1044
        message **dst,
vb@939
  1045
        PEP_enc_format enc_format,
vb@939
  1046
        PEP_encrypt_flags_t flags
vb@37
  1047
    )
vb@37
  1048
{
vb@37
  1049
    PEP_STATUS status = PEP_STATUS_OK;
vb@63
  1050
    message * msg = NULL;
vb@63
  1051
    stringlist_t * keys = NULL;
vb@37
  1052
vb@37
  1053
    assert(session);
vb@37
  1054
    assert(src);
vb@37
  1055
    assert(dst);
Edouard@558
  1056
    assert(enc_format != PEP_enc_none);
vb@81
  1057
Edouard@558
  1058
    if (!(session && src && dst && enc_format != PEP_enc_none))
vb@191
  1059
        return PEP_ILLEGAL_VALUE;
vb@191
  1060
Edouard@550
  1061
    if (src->dir == PEP_dir_incoming)
Edouard@550
  1062
        return PEP_ILLEGAL_VALUE;
krista@1427
  1063
vb@259
  1064
    determine_encryption_format(src);
vb@260
  1065
    if (src->enc_format != PEP_enc_none)
vb@260
  1066
        return PEP_ILLEGAL_VALUE;
vb@259
  1067
vb@37
  1068
    *dst = NULL;
vb@67
  1069
vb@236
  1070
    status = myself(session, src->from);
vb@236
  1071
    if (status != PEP_STATUS_OK)
vb@236
  1072
        goto pep_error;
Edouard@558
  1073
vb@80
  1074
    keys = new_stringlist(src->from->fpr);
vb@63
  1075
    if (keys == NULL)
vb@63
  1076
        goto enomem;
vb@37
  1077
vb@39
  1078
    stringlist_t *_k = keys;
vb@39
  1079
vb@39
  1080
    if (extra) {
vb@39
  1081
        _k = stringlist_append(_k, extra);
vb@63
  1082
        if (_k == NULL)
vb@63
  1083
            goto enomem;
vb@37
  1084
    }
vb@39
  1085
vb@299
  1086
    bool dest_keys_found = true;
Edouard@510
  1087
    PEP_comm_type max_comm_type = PEP_ct_pEp;
vb@299
  1088
vb@37
  1089
    identity_list * _il;
krista@1427
  1090
Edouard@545
  1091
    if ((_il = src->bcc) && _il->ident)
Edouard@545
  1092
    {
Edouard@545
  1093
        // BCC limited support:
Edouard@545
  1094
        //     - App splits mails with BCC in multiple mails.
Edouard@545
  1095
        //     - Each email is encrypted separately
krista@1427
  1096
Edouard@789
  1097
        if(_il->next || (src->to && src->to->ident) || (src->cc && src->cc->ident))
Edouard@545
  1098
        {
Edouard@545
  1099
            // Only one Bcc with no other recipient allowed for now
Edouard@545
  1100
            return PEP_ILLEGAL_VALUE;
Edouard@545
  1101
        }
krista@1427
  1102
vb@299
  1103
        PEP_STATUS _status = update_identity(session, _il->ident);
vb@299
  1104
        if (_status != PEP_STATUS_OK) {
vb@299
  1105
            status = _status;
vb@63
  1106
            goto pep_error;
vb@299
  1107
        }
krista@1427
  1108
vb@299
  1109
        if (_il->ident->fpr && _il->ident->fpr[0]) {
vb@39
  1110
            _k = stringlist_add(_k, _il->ident->fpr);
vb@63
  1111
            if (_k == NULL)
vb@63
  1112
                goto enomem;
Edouard@510
  1113
            max_comm_type = _get_comm_type(session, max_comm_type,
Edouard@510
  1114
                                           _il->ident);
vb@37
  1115
        }
vb@299
  1116
        else {
vb@299
  1117
            dest_keys_found = false;
vb@37
  1118
            status = PEP_KEY_NOT_FOUND;
krista@1427
  1119
        }
vb@299
  1120
    }
Edouard@545
  1121
    else
Edouard@545
  1122
    {
Edouard@545
  1123
        for (_il = src->to; _il && _il->ident; _il = _il->next) {
Edouard@545
  1124
            PEP_STATUS _status = update_identity(session, _il->ident);
Edouard@545
  1125
            if (_status != PEP_STATUS_OK) {
Edouard@545
  1126
                status = _status;
Edouard@545
  1127
                goto pep_error;
Edouard@545
  1128
            }
vb@299
  1129
Edouard@545
  1130
            if (_il->ident->fpr && _il->ident->fpr[0]) {
Edouard@545
  1131
                _k = stringlist_add(_k, _il->ident->fpr);
Edouard@545
  1132
                if (_k == NULL)
Edouard@545
  1133
                    goto enomem;
Edouard@545
  1134
                max_comm_type = _get_comm_type(session, max_comm_type,
Edouard@545
  1135
                                               _il->ident);
Edouard@545
  1136
            }
Edouard@545
  1137
            else {
Edouard@545
  1138
                dest_keys_found = false;
Edouard@545
  1139
                status = PEP_KEY_NOT_FOUND;
Edouard@545
  1140
            }
vb@299
  1141
        }
vb@299
  1142
Edouard@545
  1143
        for (_il = src->cc; _il && _il->ident; _il = _il->next) {
Edouard@545
  1144
            PEP_STATUS _status = update_identity(session, _il->ident);
Edouard@545
  1145
            if (_status != PEP_STATUS_OK)
Edouard@545
  1146
            {
Edouard@545
  1147
                status = _status;
Edouard@545
  1148
                goto pep_error;
Edouard@545
  1149
            }
Edouard@545
  1150
Edouard@545
  1151
            if (_il->ident->fpr && _il->ident->fpr[0]) {
Edouard@545
  1152
                _k = stringlist_add(_k, _il->ident->fpr);
Edouard@545
  1153
                if (_k == NULL)
Edouard@545
  1154
                    goto enomem;
Edouard@545
  1155
                max_comm_type = _get_comm_type(session, max_comm_type,
Edouard@545
  1156
                                               _il->ident);
Edouard@545
  1157
            }
Edouard@545
  1158
            else {
Edouard@545
  1159
                dest_keys_found = false;
Edouard@545
  1160
                status = PEP_KEY_NOT_FOUND;
Edouard@545
  1161
            }
vb@299
  1162
        }
vb@37
  1163
    }
krista@1427
  1164
Edouard@510
  1165
    if (!dest_keys_found ||
Edouard@510
  1166
        stringlist_length(keys) == 0 ||
Edouard@510
  1167
        _rating(max_comm_type,
Edouard@510
  1168
                PEP_rating_undefined) < PEP_rating_reliable)
Edouard@510
  1169
    {
vb@301
  1170
        free_stringlist(keys);
vb@465
  1171
        if (!session->passive_mode)
vb@465
  1172
            attach_own_key(session, src);
vb@301
  1173
        return PEP_UNENCRYPTED;
vb@301
  1174
    }
vb@301
  1175
    else {
vb@299
  1176
        msg = clone_to_empty_message(src);
vb@299
  1177
        if (msg == NULL)
vb@299
  1178
            goto enomem;
vb@299
  1179
Edouard@431
  1180
        attach_own_key(session, src);
Edouard@428
  1181
vb@81
  1182
        switch (enc_format) {
vb@260
  1183
        case PEP_enc_PGP_MIME:
vb@336
  1184
        case PEP_enc_PEP: // BUG: should be implemented extra
vb@260
  1185
            status = encrypt_PGP_MIME(session, src, keys, msg);
vb@260
  1186
            break;
vb@62
  1187
vb@62
  1188
        case PEP_enc_pieces:
vb@260
  1189
            status = encrypt_PGP_in_pieces(session, src, keys, msg);
vb@38
  1190
            break;
vb@38
  1191
vb@336
  1192
        /* case PEP_enc_PEP:
vb@81
  1193
            // TODO: implement
vb@336
  1194
            NOT_IMPLEMENTED */
vb@81
  1195
vb@38
  1196
        default:
vb@38
  1197
            assert(0);
vb@63
  1198
            status = PEP_ILLEGAL_VALUE;
vb@63
  1199
            goto pep_error;
vb@37
  1200
        }
krista@1427
  1201
Edouard@392
  1202
        if (status == PEP_OUT_OF_MEMORY)
Edouard@392
  1203
            goto enomem;
krista@1427
  1204
vb@480
  1205
        if (status != PEP_STATUS_OK)
Edouard@392
  1206
            goto pep_error;
vb@37
  1207
    }
vb@37
  1208
vb@37
  1209
    free_stringlist(keys);
vb@63
  1210
vb@469
  1211
    if (msg && msg->shortmsg == NULL) {
vb@64
  1212
        msg->shortmsg = strdup("pEp");
vb@469
  1213
        assert(msg->shortmsg);
krista@853
  1214
        if (msg->shortmsg == NULL)
krista@853
  1215
            goto enomem;
vb@469
  1216
    }
vb@64
  1217
edouard@1542
  1218
    if (msg) {
vb@311
  1219
        decorate_message(msg, PEP_rating_undefined, NULL);
edouard@1542
  1220
        if (src->id) {
edouard@1542
  1221
            msg->id = strdup(src->id);
edouard@1542
  1222
            assert(msg->id);
edouard@1542
  1223
            if (msg->id == NULL)
edouard@1542
  1224
                goto enomem;
edouard@1542
  1225
        }
edouard@1542
  1226
    }
vb@311
  1227
vb@63
  1228
    *dst = msg;
vb@299
  1229
    return status;
vb@63
  1230
vb@63
  1231
enomem:
vb@63
  1232
    status = PEP_OUT_OF_MEMORY;
vb@63
  1233
vb@63
  1234
pep_error:
vb@63
  1235
    free_stringlist(keys);
vb@63
  1236
    free_message(msg);
vb@63
  1237
vb@37
  1238
    return status;
vb@37
  1239
}
vb@37
  1240
krista@995
  1241
DYNAMIC_API PEP_STATUS encrypt_message_for_self(
krista@992
  1242
        PEP_SESSION session,
krista@992
  1243
        pEp_identity* target_id,
krista@992
  1244
        message *src,
krista@992
  1245
        message **dst,
krista@992
  1246
        PEP_enc_format enc_format
krista@992
  1247
    )
krista@992
  1248
{
krista@992
  1249
    PEP_STATUS status = PEP_STATUS_OK;
krista@992
  1250
    message * msg = NULL;
krista@992
  1251
    stringlist_t * keys = NULL;
krista@992
  1252
krista@992
  1253
    assert(session);
krista@992
  1254
    assert(src);
krista@992
  1255
    assert(dst);
krista@992
  1256
    assert(enc_format != PEP_enc_none);
krista@992
  1257
krista@992
  1258
    if (!(session && src && dst && enc_format != PEP_enc_none))
krista@992
  1259
        return PEP_ILLEGAL_VALUE;
krista@992
  1260
krista@992
  1261
    if (src->dir == PEP_dir_incoming)
krista@992
  1262
        return PEP_ILLEGAL_VALUE;
krista@1427
  1263
krista@992
  1264
    determine_encryption_format(src);
krista@992
  1265
    if (src->enc_format != PEP_enc_none)
krista@992
  1266
        return PEP_ILLEGAL_VALUE;
krista@992
  1267
krista@995
  1268
    status = myself(session, target_id);
krista@995
  1269
    if (status != PEP_STATUS_OK)
krista@995
  1270
        goto pep_error;
krista@995
  1271
krista@992
  1272
    *dst = NULL;
krista@992
  1273
krista@1427
  1274
krista@992
  1275
    PEP_STATUS _status = update_identity(session, target_id);
krista@992
  1276
    if (_status != PEP_STATUS_OK) {
krista@992
  1277
        status = _status;
krista@992
  1278
        goto pep_error;
krista@992
  1279
    }
krista@992
  1280
krista@994
  1281
    char* target_fpr = target_id->fpr;
krista@994
  1282
    if (!target_fpr)
krista@994
  1283
        return PEP_KEY_NOT_FOUND; // FIXME: Error condition
krista@1427
  1284
krista@994
  1285
    keys = new_stringlist(target_fpr);
krista@992
  1286
krista@1427
  1287
krista@992
  1288
    msg = clone_to_empty_message(src);
krista@992
  1289
    if (msg == NULL)
krista@992
  1290
        goto enomem;
krista@992
  1291
krista@992
  1292
    switch (enc_format) {
krista@992
  1293
        case PEP_enc_PGP_MIME:
krista@992
  1294
        case PEP_enc_PEP: // BUG: should be implemented extra
krista@992
  1295
            status = encrypt_PGP_MIME(session, src, keys, msg);
krista@992
  1296
            break;
krista@992
  1297
krista@992
  1298
        case PEP_enc_pieces:
krista@992
  1299
            status = encrypt_PGP_in_pieces(session, src, keys, msg);
krista@992
  1300
            break;
krista@992
  1301
krista@992
  1302
        /* case PEP_enc_PEP:
krista@992
  1303
            // TODO: implement
krista@992
  1304
            NOT_IMPLEMENTED */
krista@992
  1305
krista@992
  1306
        default:
krista@992
  1307
            assert(0);
krista@992
  1308
            status = PEP_ILLEGAL_VALUE;
krista@992
  1309
            goto pep_error;
krista@992
  1310
    }
krista@1427
  1311
krista@992
  1312
    if (status == PEP_OUT_OF_MEMORY)
krista@992
  1313
        goto enomem;
krista@1427
  1314
krista@992
  1315
    if (status != PEP_STATUS_OK)
krista@992
  1316
        goto pep_error;
krista@992
  1317
krista@994
  1318
     if (msg && msg->shortmsg == NULL) {
krista@994
  1319
         msg->shortmsg = strdup("pEp");
krista@994
  1320
         assert(msg->shortmsg);
krista@994
  1321
         if (msg->shortmsg == NULL)
krista@994
  1322
             goto enomem;
krista@994
  1323
     }
krista@992
  1324
edouard@1542
  1325
     if (msg) {
edouard@1542
  1326
         if (src->id) {
edouard@1542
  1327
             msg->id = strdup(src->id);
edouard@1542
  1328
             assert(msg->id);
edouard@1542
  1329
             if (msg->id == NULL)
edouard@1542
  1330
                 goto enomem;
edouard@1542
  1331
         }
edouard@1542
  1332
     }
edouard@1542
  1333
krista@992
  1334
    *dst = msg;
krista@992
  1335
    return status;
krista@992
  1336
krista@992
  1337
enomem:
krista@992
  1338
    status = PEP_OUT_OF_MEMORY;
krista@992
  1339
krista@992
  1340
pep_error:
krista@992
  1341
    free_stringlist(keys);
krista@992
  1342
    free_message(msg);
krista@992
  1343
krista@992
  1344
    return status;
krista@992
  1345
}
krista@992
  1346
vb@781
  1347
static bool is_a_pEpmessage(const message *msg)
vb@781
  1348
{
vb@781
  1349
    for (stringpair_list_t *i = msg->opt_fields; i && i->value ; i=i->next) {
vb@781
  1350
        if (strcasecmp(i->value->key, "X-pEp-Version") == 0)
vb@781
  1351
            return true;
vb@781
  1352
    }
vb@781
  1353
    return false;
vb@781
  1354
}
vb@781
  1355
vb@781
  1356
// update comm_type to pEp_ct_pEp if needed
vb@781
  1357
Edouard@858
  1358
static PEP_STATUS _update_identity_for_incoming_message(
vb@781
  1359
        PEP_SESSION session,
vb@781
  1360
        const message *src
vb@781
  1361
    )
vb@781
  1362
{
Edouard@858
  1363
    PEP_STATUS status;
Edouard@858
  1364
    if (src->from && src->from->address) {
Edouard@858
  1365
        status = update_identity(session, src->from);
krista@1192
  1366
        if (status == PEP_STATUS_OK
Edouard@858
  1367
                && is_a_pEpmessage(src)
vb@781
  1368
                && src->from->comm_type >= PEP_ct_OpenPGP_unconfirmed
vb@781
  1369
                && src->from->comm_type != PEP_ct_pEp_unconfirmed
vb@781
  1370
                && src->from->comm_type != PEP_ct_pEp)
vb@781
  1371
        {
vb@781
  1372
            src->from->comm_type |= PEP_ct_pEp_unconfirmed;
Edouard@858
  1373
            status = update_identity(session, src->from);
vb@781
  1374
        }
Edouard@858
  1375
        return status;
vb@781
  1376
    }
Edouard@858
  1377
    return PEP_ILLEGAL_VALUE;
vb@781
  1378
}
vb@781
  1379
krista@1397
  1380
krista@1397
  1381
PEP_STATUS _get_detached_signature(message* msg, bloblist_t** signature_blob) {
krista@1397
  1382
    bloblist_t* attach_curr = msg->attachments;
krista@1427
  1383
krista@1427
  1384
    *signature_blob = NULL;
krista@1427
  1385
krista@1397
  1386
    while (attach_curr) {
krista@1427
  1387
        if (strcasecmp(attach_curr->mime_type, "application/pgp-signature") == 0) {
krista@1397
  1388
            *signature_blob = attach_curr;
krista@1397
  1389
            break;
krista@1397
  1390
        }
krista@1397
  1391
        attach_curr = attach_curr->next;
krista@1397
  1392
    }
krista@1427
  1393
krista@1427
  1394
    return PEP_STATUS_OK;
krista@1427
  1395
}
krista@1427
  1396
krista@1427
  1397
PEP_STATUS _get_signed_text(const char* ptext, const size_t psize,
krista@1427
  1398
                            char** stext, size_t* ssize) {
krista@1427
  1399
krista@1427
  1400
    char* signed_boundary = NULL;
krista@1427
  1401
    char* signpost = strstr(ptext, "Content-Type: multipart/signed");
krista@1427
  1402
krista@1427
  1403
    *ssize = 0;
krista@1427
  1404
    *stext = NULL;
krista@1427
  1405
krista@1427
  1406
    if (!signpost)
krista@1427
  1407
        return PEP_UNKNOWN_ERROR;
krista@1427
  1408
krista@1427
  1409
    char* curr_line = signpost;
krista@1427
  1410
//    const char* end_text = ptext + psize;
krista@1427
  1411
    const char* boundary_key = "boundary=\"";
krista@1427
  1412
    const size_t BOUNDARY_KEY_SIZE = 10;
krista@1427
  1413
krista@1427
  1414
    char* start_boundary = strstr(curr_line, boundary_key);
krista@1427
  1415
    if (!start_boundary)
krista@1427
  1416
        return PEP_UNKNOWN_ERROR;
krista@1427
  1417
krista@1427
  1418
    start_boundary += BOUNDARY_KEY_SIZE;
krista@1427
  1419
krista@1427
  1420
    char* end_boundary = strstr(start_boundary, "\"");
krista@1427
  1421
krista@1427
  1422
    if (!end_boundary)
krista@1427
  1423
        return PEP_UNKNOWN_ERROR;
krista@1427
  1424
krista@1427
  1425
    size_t boundary_strlen = (end_boundary - start_boundary) + 2;
krista@1427
  1426
krista@1427
  1427
    signed_boundary = calloc(1, boundary_strlen + 1);
krista@1427
  1428
    strlcpy(signed_boundary, "--", boundary_strlen + 1);
krista@1427
  1429
    strlcat(signed_boundary, start_boundary, boundary_strlen + 1);
krista@1427
  1430
krista@1427
  1431
    start_boundary = strstr(end_boundary, signed_boundary);
krista@1427
  1432
krista@1427
  1433
    if (!start_boundary)
krista@1427
  1434
        return PEP_UNKNOWN_ERROR;
krista@1427
  1435
krista@1427
  1436
    start_boundary += boundary_strlen;
krista@1427
  1437
krista@1427
  1438
    while (*start_boundary == '\n')
krista@1427
  1439
        start_boundary++;
krista@1427
  1440
krista@1427
  1441
    end_boundary = strstr(start_boundary + boundary_strlen, signed_boundary);
krista@1427
  1442
krista@1427
  1443
    if (!end_boundary)
krista@1427
  1444
        return PEP_UNKNOWN_ERROR;
krista@1427
  1445
krista@1427
  1446
    end_boundary--; // See RFC3156 section 5...
krista@1427
  1447
krista@1427
  1448
    *ssize = end_boundary - start_boundary;
krista@1427
  1449
    *stext = start_boundary;
krista@1427
  1450
    free(signed_boundary);
krista@1427
  1451
krista@1397
  1452
    return PEP_STATUS_OK;
krista@1397
  1453
}
krista@1397
  1454
krista@1484
  1455
PEP_STATUS combine_keylists(PEP_SESSION session, stringlist_t** verify_in, 
krista@1484
  1456
                            stringlist_t** keylist_in_out, 
krista@1484
  1457
                            pEp_identity* from) {
krista@1484
  1458
    
krista@1484
  1459
    if (!verify_in || !(*verify_in)) // this isn't really a problem.
krista@1484
  1460
        return PEP_STATUS_OK;
krista@1484
  1461
    
krista@1484
  1462
    stringlist_t* orig_verify = *verify_in;
krista@1484
  1463
    
roker@1559
  1464
    stringlist_t* verify_curr = NULL;
roker@1559
  1465
    stringlist_t* from_keys = NULL;
krista@1484
  1466
    
krista@1484
  1467
    /* FIXME: what to do if head needs to be null */
krista@1484
  1468
    PEP_STATUS status = find_keys(session, from->address, &from_keys);
krista@1484
  1469
    
krista@1484
  1470
    stringlist_t* from_fpr_node = NULL;
krista@1484
  1471
    stringlist_t* from_curr;
krista@1484
  1472
    
krista@1484
  1473
    for (from_curr = from_keys; from_curr; from_curr = from_curr->next) {
krista@1484
  1474
        for (verify_curr = orig_verify; verify_curr; verify_curr = verify_curr->next) {
krista@1484
  1475
            if (from_curr->value && verify_curr->value &&
edouard@1573
  1476
                _same_fpr(from_curr->value, strlen(from_curr->value),
edouard@1573
  1477
                          verify_curr->value, strlen(verify_curr->value))) {
krista@1484
  1478
                from_fpr_node = from_curr;
krista@1484
  1479
                break;
krista@1484
  1480
            }
krista@1484
  1481
        }
krista@1484
  1482
    }
krista@1484
  1483
    
krista@1484
  1484
    if (!from_fpr_node) {
krista@1484
  1485
        status = PEP_KEY_NOT_FOUND;
krista@1484
  1486
        goto free;
krista@1484
  1487
    }
krista@1484
  1488
krista@1484
  1489
    verify_curr = orig_verify;
krista@1484
  1490
    
krista@1484
  1491
    /* put "from" signer at the beginning of the list */
edouard@1573
  1492
    if (!_same_fpr(orig_verify->value, strlen(orig_verify->value),
edouard@1573
  1493
                   from_fpr_node->value, strlen(from_fpr_node->value))) {
krista@1484
  1494
        orig_verify = stringlist_delete(orig_verify, from_fpr_node->value);
krista@1484
  1495
        verify_curr = new_stringlist(from_fpr_node->value);
krista@1484
  1496
        verify_curr->next = orig_verify;
krista@1484
  1497
    }
krista@1484
  1498
krista@1484
  1499
    /* append keylist to signers */
krista@1484
  1500
    if (keylist_in_out && *keylist_in_out && (*keylist_in_out)->value) {
krista@1484
  1501
        stringlist_t** tail_pp = &verify_curr->next;
krista@1484
  1502
        
krista@1484
  1503
        while (*tail_pp) {
krista@1484
  1504
            tail_pp = &((*tail_pp)->next);
krista@1484
  1505
        }
krista@1484
  1506
        *tail_pp = *keylist_in_out;
krista@1484
  1507
    }
krista@1484
  1508
    
krista@1484
  1509
    *keylist_in_out = verify_curr;
krista@1484
  1510
    
krista@1484
  1511
    status = PEP_STATUS_OK;
krista@1484
  1512
    
krista@1484
  1513
free:
krista@1484
  1514
    free_stringlist(from_keys);
roker@1559
  1515
    return status;
krista@1484
  1516
}
krista@1484
  1517
krista@1484
  1518
Edouard@741
  1519
DYNAMIC_API PEP_STATUS _decrypt_message(
vb@37
  1520
        PEP_SESSION session,
vb@113
  1521
        message *src,
vb@241
  1522
        message **dst,
vb@251
  1523
        stringlist_t **keylist,
vb@1004
  1524
        PEP_rating *rating,
krista@1427
  1525
        PEP_decrypt_flags_t *flags,
Edouard@741
  1526
        identity_list **private_il
vb@37
  1527
    )
vb@37
  1528
{
vb@37
  1529
    PEP_STATUS status = PEP_STATUS_OK;
vb@261
  1530
    PEP_STATUS decrypt_status = PEP_CANNOT_DECRYPT_UNKNOWN;
vb@73
  1531
    message *msg = NULL;
vb@112
  1532
    char *ctext;
vb@112
  1533
    size_t csize;
vb@269
  1534
    char *ptext = NULL;
vb@112
  1535
    size_t psize;
vb@241
  1536
    stringlist_t *_keylist = NULL;
vb@37
  1537
vb@74
  1538
    assert(session);
vb@74
  1539
    assert(src);
vb@74
  1540
    assert(dst);
vb@241
  1541
    assert(keylist);
vb@1004
  1542
    assert(rating);
Edouard@739
  1543
    assert(flags);
vb@73
  1544
vb@1004
  1545
    if (!(session && src && dst && keylist && rating && flags))
vb@191
  1546
        return PEP_ILLEGAL_VALUE;
vb@191
  1547
Edouard@739
  1548
    *flags = 0;
Edouard@739
  1549
Edouard@734
  1550
    // Private key in unencrypted mail are ignored -> NULL
Edouard@734
  1551
    bool imported_keys = import_attached_keys(session, src, NULL);
Edouard@728
  1552
Edouard@728
  1553
    // Update src->from in case we just imported a key
Edouard@728
  1554
    // we would need to check signature
Edouard@858
  1555
    status = _update_identity_for_incoming_message(session, src);
Edouard@858
  1556
    if(status != PEP_STATUS_OK)
Edouard@858
  1557
        return status;
Edouard@858
  1558
krista@1397
  1559
    // Get detached signature, if any
krista@1397
  1560
    bloblist_t* detached_sig = NULL;
krista@1397
  1561
    char* dsig_text = NULL;
krista@1397
  1562
    size_t dsig_size = 0;
krista@1397
  1563
    status = _get_detached_signature(src, &detached_sig);
krista@1397
  1564
    if (detached_sig) {
krista@1397
  1565
        dsig_text = detached_sig->value;
krista@1397
  1566
        dsig_size = detached_sig->size;
krista@1397
  1567
    }
krista@1427
  1568
vb@259
  1569
    PEP_cryptotech crypto = determine_encryption_format(src);
vb@259
  1570
vb@74
  1571
    *dst = NULL;
vb@251
  1572
    *keylist = NULL;
vb@1004
  1573
    *rating = PEP_rating_undefined;
krista@1427
  1574
vb@261
  1575
    switch (src->enc_format) {
vb@269
  1576
        case PEP_enc_none:
vb@1004
  1577
            *rating = PEP_rating_unencrypted;
vb@731
  1578
            if (imported_keys)
vb@731
  1579
                remove_attached_keys(src);
edouard@1320
  1580
            if(session->inject_sync_msg){
edouard@1165
  1581
                status = receive_DeviceState_msg(session, src, *rating, *keylist);
krista@1427
  1582
                if (status == PEP_MESSAGE_CONSUME ||
edouard@1369
  1583
                    status == PEP_MESSAGE_IGNORE) {
vb@1134
  1584
                    free_message(msg);
vb@1134
  1585
                    msg = NULL;
edouard@1369
  1586
                    *flags |= (status == PEP_MESSAGE_IGNORE) ?
edouard@1369
  1587
                                PEP_decrypt_flag_ignore :
edouard@1369
  1588
                                PEP_decrypt_flag_consume;
vb@1134
  1589
                }
vb@1134
  1590
                else if (status != PEP_STATUS_OK) {
vb@1134
  1591
                    return status;
vb@1134
  1592
                }
vb@1099
  1593
            }
krista@1484
  1594
            
krista@1484
  1595
            char* slong = src->longmsg;
krista@1484
  1596
            char* sform = src->longmsg_formatted;
krista@1484
  1597
            bloblist_t* satt = src->attachments;
roker@1563
  1598
            
krista@1484
  1599
            if ((!slong || slong[0] == '\0')
krista@1484
  1600
                 && (!sform || sform[0] == '\0')) {
krista@1484
  1601
                if (satt) {
krista@1484
  1602
                    const char* inner_mime_type = satt->mime_type;
krista@1484
  1603
                    if (strcasecmp(inner_mime_type, "text/plain") == 0) {
krista@1484
  1604
                        free(slong); /* in case of "" */
roker@1563
  1605
                        src->longmsg = strndup(satt->value, satt->size); // N.B.: longmsg might be shorter, if attachment contains NUL bytes which are not allowed in text/plain!
roker@1563
  1606
                        
krista@1484
  1607
                        bloblist_t* next_node = satt->next;
krista@1484
  1608
                        if (next_node) {
krista@1484
  1609
                            inner_mime_type = next_node->mime_type;
krista@1484
  1610
                            if (strcasecmp(inner_mime_type, "text/html") == 0) {
krista@1484
  1611
                                free(sform);
roker@1563
  1612
                                src->longmsg_formatted = strndup(next_node->value, next_node->size);  // N.B.: longmsg might be shorter, if attachment contains NUL bytes which are not allowed in text/plain!
krista@1484
  1613
                            }
krista@1484
  1614
                        }
krista@1484
  1615
                    }
krista@1484
  1616
                    else if (strcasecmp(inner_mime_type, "text/html") == 0) {
krista@1484
  1617
                        free(sform);
roker@1563
  1618
                        src->longmsg_formatted = strndup(satt->value, satt->size);  // N.B.: longmsg might be shorter, if attachment contains NUL bytes which are not allowed in text/plain!
roker@1563
  1619
                    }
krista@1484
  1620
                }
roker@1563
  1621
            }
krista@1484
  1622
            
vb@301
  1623
            return PEP_UNENCRYPTED;
vb@269
  1624
vb@261
  1625
        case PEP_enc_PGP_MIME:
vb@301
  1626
            ctext = src->attachments->next->value;
vb@269
  1627
            csize = src->attachments->next->size;
vb@261
  1628
            break;
vb@261
  1629
edouard@1557
  1630
        case PEP_enc_PGP_MIME_Outlook1:
edouard@1557
  1631
            ctext = src->attachments->value;
edouard@1557
  1632
            csize = src->attachments->size;
edouard@1557
  1633
            break;
edouard@1557
  1634
vb@261
  1635
        case PEP_enc_pieces:
vb@261
  1636
            ctext = src->longmsg;
vb@261
  1637
            csize = strlen(ctext);
vb@261
  1638
            break;
vb@261
  1639
vb@261
  1640
        default:
vb@261
  1641
            NOT_IMPLEMENTED
vb@259
  1642
    }
Edouard@431
  1643
    status = cryptotech[crypto].decrypt_and_verify(session, ctext,
krista@1427
  1644
                                                   csize, dsig_text, dsig_size,
krista@1397
  1645
                                                   &ptext, &psize, &_keylist);
edouard@1195
  1646
    if (status > PEP_CANNOT_DECRYPT_UNKNOWN){
edouard@1271
  1647
        goto pep_error;
edouard@1271
  1648
    }
edouard@1271
  1649
edouard@1273
  1650
    decrypt_status = status;
edouard@1273
  1651
edouard@1271
  1652
    if (status == PEP_DECRYPT_NO_KEY){
edouard@1299
  1653
        PEP_STATUS sync_status = inject_DeviceState_event(session, CannotDecrypt, NULL, NULL);
edouard@1299
  1654
        if (sync_status == PEP_OUT_OF_MEMORY){
edouard@1299
  1655
            status = PEP_OUT_OF_MEMORY;
edouard@1273
  1656
            goto pep_error;
edouard@1299
  1657
        }
edouard@1195
  1658
    }
vb@113
  1659
krista@1427
  1660
    bool imported_private_key_address = false;
Edouard@728
  1661
vb@256
  1662
    if (ptext) {
vb@256
  1663
        switch (src->enc_format) {
vb@256
  1664
            case PEP_enc_PGP_MIME:
edouard@1557
  1665
            case PEP_enc_PGP_MIME_Outlook1:
vb@269
  1666
                status = mime_decode_message(ptext, psize, &msg);
vb@113
  1667
                if (status != PEP_STATUS_OK)
roker@1563
  1668
                    goto pep_error;
krista@1484
  1669
                
krista@1484
  1670
                char* mlong = msg->longmsg;
krista@1484
  1671
                char* mform = msg->longmsg_formatted;
krista@1484
  1672
                bloblist_t* matt = msg->attachments;
roker@1563
  1673
                
krista@1484
  1674
                if ((!mlong || mlong[0] == '\0')
krista@1484
  1675
                     && (!mform || mform[0] == '\0')) {
krista@1484
  1676
                    if (matt) {
krista@1484
  1677
                        const char* inner_mime_type = matt->mime_type;
krista@1484
  1678
                        if (strcasecmp(inner_mime_type, "text/plain") == 0) {
krista@1484
  1679
                            free(mlong); /* in case of "" */
roker@1563
  1680
                            msg->longmsg = strndup(matt->value, matt->size);
roker@1563
  1681
                            
krista@1484
  1682
                            bloblist_t* next_node = matt->next;
krista@1484
  1683
                            if (next_node) {
krista@1484
  1684
                                inner_mime_type = next_node->mime_type;
krista@1484
  1685
                                if (strcasecmp(inner_mime_type, "text/html") == 0) {
krista@1484
  1686
                                    free(mform);
roker@1563
  1687
                                    msg->longmsg_formatted = strndup(next_node->value, next_node->size);
krista@1484
  1688
                                }
krista@1484
  1689
                            }
krista@1484
  1690
                        }
krista@1484
  1691
                        else if (strcasecmp(inner_mime_type, "text/html") == 0) {
krista@1484
  1692
                            free(mform);
roker@1563
  1693
                            msg->longmsg_formatted = strndup(matt->value, matt->size);
roker@1563
  1694
                        }
krista@1484
  1695
                    }
krista@1484
  1696
                    if (msg->shortmsg) {
krista@1484
  1697
                        free(src->shortmsg);
krista@1484
  1698
                        src->shortmsg = strdup(msg->shortmsg);
krista@1484
  1699
                    }
roker@1563
  1700
                }
krista@1484
  1701
krista@1484
  1702
                if (decrypt_status != PEP_DECRYPTED_AND_VERIFIED) {
krista@1484
  1703
                    status = _get_detached_signature(msg, &detached_sig);
krista@1484
  1704
                    if (decrypt_status == PEP_DECRYPTED && detached_sig) {
krista@1484
  1705
                        dsig_text = detached_sig->value;
krista@1484
  1706
                        dsig_size = detached_sig->size;
krista@1484
  1707
                        size_t ssize = 0;
krista@1484
  1708
                        char* stext = NULL;
krista@1484
  1709
krista@1484
  1710
                        status = _get_signed_text(ptext, psize, &stext, &ssize);
krista@1484
  1711
                        stringlist_t *_verify_keylist = NULL;
krista@1484
  1712
krista@1484
  1713
                        if (ssize > 0 && stext) {
krista@1484
  1714
                            status = cryptotech[crypto].verify_text(session, stext,
krista@1484
  1715
                                                                    ssize, dsig_text, dsig_size,
krista@1484
  1716
                                                                    &_verify_keylist);
krista@1484
  1717
krista@1484
  1718
                            if (status == PEP_VERIFIED || status == PEP_VERIFIED_AND_TRUSTED)
krista@1484
  1719
                                decrypt_status = PEP_DECRYPTED_AND_VERIFIED;
krista@1484
  1720
                            
krista@1484
  1721
                                status = combine_keylists(session, &_verify_keylist, &_keylist, src->from);
krista@1484
  1722
                        }
krista@1427
  1723
                    }
krista@1427
  1724
                }
vb@256
  1725
                break;
vb@256
  1726
vb@256
  1727
            case PEP_enc_pieces:
vb@256
  1728
                msg = clone_to_empty_message(src);
vb@256
  1729
                if (msg == NULL)
vb@113
  1730
                    goto enomem;
vb@113
  1731
Edouard@882
  1732
                msg->longmsg = ptext;
Edouard@882
  1733
                ptext = NULL;
vb@256
  1734
vb@256
  1735
                bloblist_t *_m = msg->attachments;
vb@320
  1736
                if (_m == NULL && src->attachments && src->attachments->value) {
vb@320
  1737
                    msg->attachments = new_bloblist(NULL, 0, NULL, NULL);
vb@320
  1738
                    _m = msg->attachments;
vb@320
  1739
                }
vb@320
  1740
vb@256
  1741
                bloblist_t *_s;
Edouard@754
  1742
                for (_s = src->attachments; _s; _s = _s->next) {
Edouard@754
  1743
                    if (_s->value == NULL && _s->size == 0){
Edouard@754
  1744
                        _m = bloblist_add(_m, NULL, 0, _s->mime_type, _s->filename);
Edouard@754
  1745
                        if (_m == NULL)
Edouard@754
  1746
                            goto enomem;
Edouard@754
  1747
Edouard@754
  1748
                    }
Edouard@754
  1749
                    else if (is_encrypted_attachment(_s)) {
vb@256
  1750
                        stringlist_t *_keylist = NULL;
roker@862
  1751
                        char *attctext  = _s->value;
roker@862
  1752
                        size_t attcsize = _s->size;
Edouard@431
  1753
Edouard@842
  1754
                        free(ptext);
Edouard@842
  1755
                        ptext = NULL;
Edouard@842
  1756
krista@1397
  1757
                        // FIXME: What about attachments with separate sigs???
Edouard@431
  1758
                        status = decrypt_and_verify(session, attctext, attcsize,
krista@1397
  1759
                                                    NULL, 0,
krista@1397
  1760
                                                    &ptext, &psize, &_keylist);
krista@1484
  1761
                        free_stringlist(_keylist); // FIXME: Why do we do this?
vb@256
  1762
vb@289
  1763
                        if (ptext) {
vb@289
  1764
                            if (is_encrypted_html_attachment(_s)) {
Edouard@882
  1765
                                msg->longmsg_formatted = ptext;
Edouard@882
  1766
                                ptext = NULL;
vb@289
  1767
                            }
vb@289
  1768
                            else {
roker@862
  1769
                                static const char * const mime_type = "application/octet-stream";
roker@864
  1770
                                char * const filename =
vb@289
  1771
                                    without_double_ending(_s->filename);
vb@289
  1772
                                if (filename == NULL)
vb@289
  1773
                                    goto enomem;
vb@289
  1774
Edouard@882
  1775
                                _m = bloblist_add(_m, ptext, psize, mime_type,
vb@289
  1776
                                    filename);
roker@862
  1777
                                free(filename);
vb@290
  1778
                                if (_m == NULL)
vb@289
  1779
                                    goto enomem;
vb@290
  1780
Edouard@882
  1781
                                ptext = NULL;
Edouard@882
  1782
vb@290
  1783
                                if (msg->attachments == NULL)
vb@290
  1784
                                    msg->attachments = _m;
vb@289
  1785
                            }
vb@256
  1786
                        }
vb@256
  1787
                        else {
vb@320
  1788
                            char *copy = malloc(_s->size);
vb@350
  1789
                            assert(copy);
vb@350
  1790
                            if (copy == NULL)
vb@350
  1791
                                goto enomem;
vb@320
  1792
                            memcpy(copy, _s->value, _s->size);
vb@320
  1793
                            _m = bloblist_add(_m, copy, _s->size, _s->mime_type, _s->filename);
vb@256
  1794
                            if (_m == NULL)
vb@256
  1795
                                goto enomem;
vb@256
  1796
                        }
vb@256
  1797
                    }
vb@320
  1798
                    else {
vb@320
  1799
                        char *copy = malloc(_s->size);
vb@350
  1800
                        assert(copy);
vb@350
  1801
                        if (copy == NULL)
vb@350
  1802
                            goto enomem;
vb@320
  1803
                        memcpy(copy, _s->value, _s->size);
vb@320
  1804
                        _m = bloblist_add(_m, copy, _s->size, _s->mime_type, _s->filename);
vb@320
  1805
                        if (_m == NULL)
vb@320
  1806
                            goto enomem;
vb@320
  1807
                    }
vb@256
  1808
                }
vb@256
  1809
vb@256
  1810
                break;
vb@256
  1811
vb@256
  1812
            default:
vb@256
  1813
                // BUG: must implement more
vb@256
  1814
                NOT_IMPLEMENTED
vb@256
  1815
        }
krista@1427
  1816
vb@256
  1817
        switch (src->enc_format) {
vb@256
  1818
            case PEP_enc_PGP_MIME:
vb@256
  1819
            case PEP_enc_pieces:
edouard@1557
  1820
            case PEP_enc_PGP_MIME_Outlook1:
vb@256
  1821
                status = copy_fields(msg, src);
vb@256
  1822
                if (status != PEP_STATUS_OK)
vb@256
  1823
                    goto pep_error;
vb@256
  1824
vb@280
  1825
                if (src->shortmsg == NULL || strcmp(src->shortmsg, "pEp") == 0)
vb@256
  1826
                {
vb@256
  1827
                    char * shortmsg;
vb@256
  1828
                    char * longmsg;
vb@256
  1829
krista@853
  1830
                    int r = separate_short_and_long(msg->longmsg, &shortmsg,
vb@256
  1831
                            &longmsg);
vb@256
  1832
                    if (r == -1)
vb@256
  1833
                        goto enomem;
vb@256
  1834
vb@256
  1835
                    free(msg->shortmsg);
vb@256
  1836
                    free(msg->longmsg);
vb@256
  1837
vb@256
  1838
                    msg->shortmsg = shortmsg;
vb@256
  1839
                    msg->longmsg = longmsg;
vb@256
  1840
                }
vb@256
  1841
                else {
vb@256
  1842
                    msg->shortmsg = strdup(src->shortmsg);
vb@469
  1843
                    assert(msg->shortmsg);
vb@256
  1844
                    if (msg->shortmsg == NULL)
vb@256
  1845
                        goto enomem;
vb@256
  1846
                }
vb@256
  1847
                break;
vb@256
  1848
            default:
krista@1484
  1849
                    // BUG: must implement more
krista@1484
  1850
                    NOT_IMPLEMENTED
vb@256
  1851
        }
krista@1427
  1852
Edouard@734
  1853
        // check for private key in decrypted message attachement while inporting
Edouard@741
  1854
        identity_list *_private_il = NULL;
Edouard@741
  1855
        imported_keys = import_attached_keys(session, msg, &_private_il);
krista@1427
  1856
        if (_private_il &&
Edouard@741
  1857
            identity_list_length(_private_il) == 1 &&
Edouard@741
  1858
            _private_il->ident->address)
Edouard@728
  1859
        {
Edouard@741
  1860
            imported_private_key_address = true;
Edouard@728
  1861
        }
Edouard@741
  1862
Edouard@741
  1863
        if(private_il && imported_private_key_address){
Edouard@741
  1864
            *private_il = _private_il;
Edouard@741
  1865
        }else{
Edouard@741
  1866
            free_identity_list(_private_il);
Edouard@741
  1867
        }
krista@1427
  1868
Edouard@694
  1869
        if(decrypt_status == PEP_DECRYPTED){
Edouard@728
  1870
Edouard@728
  1871
            // TODO optimize if import_attached_keys didn't import any key
krista@1427
  1872
Edouard@431
  1873
            // In case message did decrypt, but no valid signature could be found
Edouard@431
  1874
            // then retry decrypt+verify after importing key.
Edouard@728
  1875
Edouard@728
  1876
            // Update msg->from in case we just imported a key
Edouard@728
  1877
            // we would need to check signature
vb@781
  1878
Edouard@861
  1879
            status = _update_identity_for_incoming_message(session, src);
Edouard@858
  1880
            if(status != PEP_STATUS_OK)
Edouard@858
  1881
                goto pep_error;
krista@1427
  1882
Edouard@431
  1883
            char *re_ptext = NULL;
Edouard@431
  1884
            size_t re_psize;
krista@1427
  1885
Edouard@431
  1886
            free_stringlist(_keylist);
Edouard@431
  1887
            _keylist = NULL;
vb@256
  1888
Edouard@431
  1889
            status = cryptotech[crypto].decrypt_and_verify(session, ctext,
krista@1397
  1890
                csize, dsig_text, dsig_size, &re_ptext, &re_psize, &_keylist);
krista@1427
  1891
Edouard@882
  1892
            free(re_ptext);
krista@1427
  1893
Edouard@431
  1894
            if (status > PEP_CANNOT_DECRYPT_UNKNOWN)
Edouard@431
  1895
                goto pep_error;
krista@1427
  1896
Edouard@431
  1897
            decrypt_status = status;
Edouard@431
  1898
        }
krista@1427
  1899
vb@1004
  1900
        *rating = decrypt_rating(decrypt_status);
krista@1427
  1901
vb@1004
  1902
        if (*rating > PEP_rating_mistrust) {
vb@1004
  1903
            PEP_rating kl_rating = PEP_rating_undefined;
krista@1427
  1904
Edouard@431
  1905
            if (_keylist)
vb@1004
  1906
                kl_rating = keylist_rating(session, _keylist);
krista@1427
  1907
vb@1004
  1908
            if (kl_rating <= PEP_rating_mistrust) {
vb@1004
  1909
                *rating = kl_rating;
Edouard@445
  1910
            }
vb@1004
  1911
            else if (*rating >= PEP_rating_reliable &&
vb@1004
  1912
                     kl_rating < PEP_rating_reliable) {
vb@1004
  1913
                *rating = PEP_rating_unreliable;
Edouard@431
  1914
            }
vb@1004
  1915
            else if (*rating >= PEP_rating_reliable &&
vb@1004
  1916
                     kl_rating >= PEP_rating_reliable) {
Edouard@431
  1917
                if (!(src->from && src->from->user_id && src->from->user_id[0])) {
vb@1004
  1918
                    *rating = PEP_rating_unreliable;
Edouard@431
  1919
                }
Edouard@431
  1920
                else {
Edouard@431
  1921
                    char *fpr = _keylist->value;
Edouard@431
  1922
                    pEp_identity *_from = new_identity(src->from->address, fpr,
Edouard@431
  1923
                                                       src->from->user_id, src->from->username);
Edouard@431
  1924
                    if (_from == NULL)
Edouard@431
  1925
                        goto enomem;
edouard@1156
  1926
                    status = get_trust(session, _from);
Edouard@431
  1927
                    if (_from->comm_type != PEP_ct_unknown)
vb@1004
  1928
                        *rating = _rating(_from->comm_type, PEP_rating_undefined);
Edouard@431
  1929
                    free_identity(_from);
edouard@1156
  1930
                    if (status == PEP_CANNOT_FIND_IDENTITY)
edouard@1156
  1931
                       status = PEP_STATUS_OK;
Edouard@431
  1932
                    if (status != PEP_STATUS_OK)
Edouard@431
  1933
                        goto pep_error;
Edouard@431
  1934
                }
Edouard@431
  1935
            }
Edouard@431
  1936
        }
vb@113
  1937
    }
Edouard@745
  1938
    else
Edouard@745
  1939
    {
vb@1004
  1940
        *rating = decrypt_rating(decrypt_status);
Edouard@745
  1941
        goto pep_error;
Edouard@745
  1942
    }
vb@731
  1943
Edouard@728
  1944
    // Case of own key imported from own trusted message
krista@1427
  1945
    if (// Message have been reliably decrypted
Edouard@728
  1946
        msg &&
vb@1004
  1947
        *rating >= PEP_rating_trusted &&
Edouard@728
  1948
        imported_private_key_address &&
Edouard@728
  1949
        // to is [own]
Edouard@728
  1950
        msg->to->ident->user_id &&
krista@1427
  1951
        strcmp(msg->to->ident->user_id, PEP_OWN_USERID) == 0
Edouard@729
  1952
        )
Edouard@728
  1953
    {
Edouard@738
  1954
        *flags |= PEP_decrypt_flag_own_private_key;
Edouard@728
  1955
    }
vb@113
  1956
vb@731
  1957
    if (msg) {
vb@1004
  1958
        decorate_message(msg, *rating, _keylist);
vb@731
  1959
        if (imported_keys)
vb@731
  1960
            remove_attached_keys(msg);
edouard@1329
  1961
        if (*rating >= PEP_rating_reliable && session->inject_sync_msg) {
edouard@1165
  1962
            status = receive_DeviceState_msg(session, msg, *rating, _keylist);
krista@1427
  1963
            if (status == PEP_MESSAGE_CONSUME ||
edouard@1369
  1964
                status == PEP_MESSAGE_IGNORE) {
vb@1099
  1965
                free_message(msg);
vb@1099
  1966
                msg = NULL;
edouard@1369
  1967
                *flags |= (status == PEP_MESSAGE_IGNORE) ?
edouard@1369
  1968
                            PEP_decrypt_flag_ignore :
edouard@1369
  1969
                            PEP_decrypt_flag_consume;
edouard@1355
  1970
edouard@1355
  1971
                status = decrypt_status;
vb@1099
  1972
            }
vb@1099
  1973
            else if (status != PEP_STATUS_OK){
vb@1099
  1974
                goto pep_error;
vb@1099
  1975
            }
vb@1099
  1976
        }
edouard@1558
  1977
    }
edouard@1558
  1978
    if (msg) {
edouard@1542
  1979
        if (src->id) {
edouard@1542
  1980
            msg->id = strdup(src->id);
edouard@1542
  1981
            assert(msg->id);
edouard@1542
  1982
            if (msg->id == NULL)
edouard@1542
  1983
                goto enomem;
edouard@1542
  1984
        }
vb@731
  1985
    }
vb@235
  1986
vb@74
  1987
    *dst = msg;
vb@241
  1988
    *keylist = _keylist;
vb@241
  1989
vb@953
  1990
    return status;
vb@73
  1991
vb@73
  1992
enomem:
vb@73
  1993
    status = PEP_OUT_OF_MEMORY;
vb@73
  1994
vb@73
  1995
pep_error:
Edouard@882
  1996
    free(ptext);
vb@73
  1997
    free_message(msg);
vb@241
  1998
    free_stringlist(_keylist);
vb@39
  1999
vb@37
  2000
    return status;
vb@37
  2001
}
vb@37
  2002
Edouard@741
  2003
DYNAMIC_API PEP_STATUS decrypt_message(
Edouard@741
  2004
        PEP_SESSION session,
Edouard@741
  2005
        message *src,
Edouard@741
  2006
        message **dst,
Edouard@741
  2007
        stringlist_t **keylist,
vb@1004
  2008
        PEP_rating *rating,
krista@1427
  2009
        PEP_decrypt_flags_t *flags
Edouard@741
  2010
    )
Edouard@741
  2011
{
vb@1004
  2012
    return _decrypt_message( session, src, dst, keylist, rating, flags, NULL );
Edouard@741
  2013
}
Edouard@741
  2014
Edouard@728
  2015
DYNAMIC_API PEP_STATUS own_message_private_key_details(
Edouard@728
  2016
        PEP_SESSION session,
Edouard@728
  2017
        message *msg,
krista@1427
  2018
        pEp_identity **ident
Edouard@728
  2019
    )
Edouard@728
  2020
{
Edouard@728
  2021
    assert(session);
Edouard@728
  2022
    assert(msg);
Edouard@728
  2023
    assert(ident);
Edouard@728
  2024
Edouard@736
  2025
    if (!(session && msg && ident))
Edouard@728
  2026
        return PEP_ILLEGAL_VALUE;
Edouard@728
  2027
krista@1427
  2028
    message *dst = NULL;
krista@956
  2029
    stringlist_t *keylist = NULL;
vb@1004
  2030
    PEP_rating rating;
krista@1427
  2031
    PEP_decrypt_flags_t flags;
Edouard@728
  2032
Edouard@729
  2033
    *ident = NULL;
Edouard@729
  2034
Edouard@740
  2035
    identity_list *private_il = NULL;
vb@1004
  2036
    PEP_STATUS status = _decrypt_message(session, msg,  &dst, &keylist, &rating, &flags, &private_il);
vb@953
  2037
    free_message(dst);
vb@953
  2038
    free_stringlist(keylist);
Edouard@728
  2039
Edouard@729
  2040
    if (status == PEP_STATUS_OK &&
Edouard@741
  2041
        flags & PEP_decrypt_flag_own_private_key &&
Edouard@741
  2042
        private_il)
Edouard@729
  2043
    {
Edouard@740
  2044
        *ident = identity_dup(private_il->ident);
Edouard@729
  2045
    }
Edouard@729
  2046
Edouard@741
  2047
    free_identity_list(private_il);
Edouard@741
  2048
Edouard@728
  2049
    return status;
Edouard@741
  2050
Edouard@728
  2051
}
Edouard@728
  2052
Edouard@858
  2053
static void _max_comm_type_from_identity_list(
krista@1427
  2054
        identity_list *identities,
Edouard@858
  2055
        PEP_SESSION session,
Edouard@858
  2056
        PEP_comm_type *max_comm_type,
Edouard@858
  2057
        bool *comm_type_determined
Edouard@858
  2058
    )
Edouard@858
  2059
{
Edouard@858
  2060
    identity_list * il;
Edouard@858
  2061
    for (il = identities; il != NULL; il = il->next)
Edouard@858
  2062
    {
Edouard@858
  2063
        if (il->ident)
Edouard@858
  2064
        {
edouard@1385
  2065
            PEP_STATUS status = update_identity(session, il->ident);
Edouard@858
  2066
            if (status == PEP_STATUS_OK)
Edouard@858
  2067
            {
Edouard@858
  2068
                *max_comm_type = _get_comm_type(session, *max_comm_type,
Edouard@858
  2069
                        il->ident);
Edouard@858
  2070
                *comm_type_determined = true;
Edouard@858
  2071
            }
Edouard@858
  2072
        }
Edouard@858
  2073
    }
Edouard@858
  2074
}
Edouard@858
  2075
vb@1004
  2076
DYNAMIC_API PEP_STATUS outgoing_message_rating(
vb@190
  2077
        PEP_SESSION session,
vb@190
  2078
        message *msg,
vb@1004
  2079
        PEP_rating *rating
vb@190
  2080
    )
vb@190
  2081
{
vb@190
  2082
    PEP_comm_type max_comm_type = PEP_ct_pEp;
vb@190
  2083
    bool comm_type_determined = false;
vb@190
  2084
vb@190
  2085
    assert(session);
vb@190
  2086
    assert(msg);
vb@251
  2087
    assert(msg->dir == PEP_dir_outgoing);
vb@1004
  2088
    assert(rating);
vb@190
  2089
vb@1004
  2090
    if (!(session && msg && rating))
vb@191
  2091
        return PEP_ILLEGAL_VALUE;
vb@191
  2092
vb@1360
  2093
    if (msg->dir != PEP_dir_outgoing)
vb@251
  2094
        return PEP_ILLEGAL_VALUE;
vb@251
  2095
vb@1004
  2096
    *rating = PEP_rating_undefined;
vb@190
  2097
Edouard@858
  2098
    _max_comm_type_from_identity_list(msg->to, session,
Edouard@858
  2099
                                      &max_comm_type, &comm_type_determined);
vb@190
  2100
Edouard@858
  2101
    _max_comm_type_from_identity_list(msg->cc, session,
Edouard@858
  2102
                                      &max_comm_type, &comm_type_determined);
krista@1427
  2103
Edouard@858
  2104
    _max_comm_type_from_identity_list(msg->bcc, session,
Edouard@858
  2105
                                      &max_comm_type, &comm_type_determined);
vb@190
  2106
vb@190
  2107
    if (comm_type_determined == false)
vb@1004
  2108
        *rating = PEP_rating_undefined;
vb@190
  2109
    else
vb@1004
  2110
        *rating = _MAX(_rating(max_comm_type, PEP_rating_undefined),
vb@486
  2111
                PEP_rating_unencrypted);
vb@190
  2112
vb@190
  2113
    return PEP_STATUS_OK;
vb@190
  2114
}
vb@190
  2115
vb@1004
  2116
DYNAMIC_API PEP_STATUS identity_rating(
vb@239
  2117
        PEP_SESSION session,
vb@239
  2118
        pEp_identity *ident,
vb@1004
  2119
        PEP_rating *rating
vb@239
  2120
    )
vb@239
  2121
{
vb@239
  2122
    PEP_STATUS status = PEP_STATUS_OK;
vb@239
  2123
vb@239
  2124
    assert(session);
vb@239
  2125
    assert(ident);
vb@1004
  2126
    assert(rating);
vb@239
  2127
vb@1004
  2128
    if (!(session && ident && rating))
vb@239
  2129
        return PEP_ILLEGAL_VALUE;
vb@239
  2130
vb@239
  2131
    if (ident->me)
edouard@1406
  2132
        status = _myself(session, ident, false, true);
vb@239
  2133
    else
vb@239
  2134
        status = update_identity(session, ident);
vb@239
  2135
vb@239
  2136
    if (status == PEP_STATUS_OK)
vb@1004
  2137
        *rating = _rating(ident->comm_type, PEP_rating_undefined);
vb@239
  2138
vb@239
  2139
    return status;
vb@239
  2140
}
vb@239
  2141
vb@507
  2142
DYNAMIC_API PEP_STATUS get_binary_path(PEP_cryptotech tech, const char **path)
vb@507
  2143
{
vb@507
  2144
    PEP_STATUS status = PEP_STATUS_OK;
vb@507
  2145
vb@507
  2146
    assert(path);
vb@507
  2147
    if (path == NULL)
vb@507
  2148
        return PEP_ILLEGAL_VALUE;
vb@507
  2149
vb@507
  2150
    if (cryptotech[tech].binary_path == NULL)
vb@507
  2151
        *path = NULL;
vb@507
  2152
    else
vb@507
  2153
        status = cryptotech[tech].binary_path(path);
vb@507
  2154
vb@507
  2155
    return status;
vb@507
  2156
}
vb@507
  2157
vb@1004
  2158
vb@1004
  2159
DYNAMIC_API PEP_color color_from_rating(PEP_rating rating)
vb@1004
  2160
{
krista@1243
  2161
    if (rating == PEP_rating_b0rken || rating == PEP_rating_have_no_key)
vb@1004
  2162
        return PEP_color_no_color;
vb@1004
  2163
vb@1004
  2164
    if (rating < PEP_rating_undefined)
vb@1004
  2165
        return PEP_color_red;
vb@1004
  2166
vb@1004
  2167
    if (rating < PEP_rating_reliable)
vb@1004
  2168
        return PEP_color_no_color;
vb@1004
  2169
vb@1004
  2170
    if (rating < PEP_rating_trusted)
vb@1004
  2171
        return PEP_color_yellow;
vb@1004
  2172
vb@1004
  2173
    if (rating >= PEP_rating_trusted)
vb@1004
  2174
        return PEP_color_green;
vb@1004
  2175
vb@1004
  2176
    // this should never happen
vb@1004
  2177
    assert(false);
vb@1475
  2178
	return PEP_color_no_color;
vb@1004
  2179
}
vb@1004
  2180
krista@1315
  2181
static bool _is_valid_hex(const char* hexstr) {
krista@1315
  2182
    if (!hexstr)
krista@1315
  2183
        return false;
krista@1427
  2184
krista@1315
  2185
    const char* curr = hexstr;
krista@1315
  2186
    char currchar;
krista@1427
  2187
krista@1315
  2188
    for (currchar = *curr; currchar != '\0'; currchar = *(++curr)) {
krista@1315
  2189
        if ((currchar >= '0' && currchar <= '9') ||
krista@1315
  2190
            (currchar >= 'a' && currchar <= 'f') ||
krista@1427
  2191
            (currchar >= 'A' && currchar <= 'F'))
krista@1315
  2192
        {
krista@1315
  2193
            continue;
krista@1315
  2194
        }
krista@1315
  2195
        return false;
krista@1315
  2196
    }
krista@1427
  2197
    return true;
krista@1315
  2198
}
krista@1315
  2199
krista@1312
  2200
// Returns, in comparison: 1 if fpr1 > fpr2, 0 if equal, -1 if fpr1 < fpr2
krista@1312
  2201
static PEP_STATUS _compare_fprs(const char* fpr1, const char* fpr2, int* comparison) {
krista@1427
  2202
krista@1312
  2203
    const int _FULL_FINGERPRINT_LENGTH = 40;
krista@1312
  2204
    const int _ASCII_LOWERCASE_OFFSET = 32;
krista@1312
  2205
krista@1312
  2206
    size_t fpr1_len = strlen(fpr1);
krista@1312
  2207
    size_t fpr2_len = strlen(fpr2);
krista@1427
  2208
krista@1312
  2209
    if (fpr1_len != _FULL_FINGERPRINT_LENGTH || fpr2_len != _FULL_FINGERPRINT_LENGTH)
krista@1312
  2210
        return PEP_TRUSTWORDS_FPR_WRONG_LENGTH;
krista@1427
  2211
krista@1315
  2212
    if (!_is_valid_hex(fpr1) || !_is_valid_hex(fpr2))
krista@1315
  2213
        return PEP_ILLEGAL_VALUE;
krista@1427
  2214
krista@1312
  2215
    const char* fpr1_curr = fpr1;
krista@1312
  2216
    const char* fpr2_curr = fpr2;
krista@1427
  2217
krista@1312
  2218
    char current;
krista@1312
  2219
krista@1315
  2220
    // Advance past leading zeros.
krista@1313
  2221
    for (current = *fpr1_curr; current != '0' && current != '\0'; current = *(++fpr1_curr), fpr1_len--);
krista@1313
  2222
    for (current = *fpr2_curr; current != '0' && current != '\0'; current = *(++fpr2_curr), fpr2_len--);
krista@1427
  2223
krista@1312
  2224
    if (fpr1_len == fpr2_len) {
krista@1312
  2225
        char digit1;
krista@1312
  2226
        char digit2;
krista@1312
  2227
krista@1315
  2228
        while (fpr1_curr && *fpr1_curr != '\0') {
krista@1312
  2229
            digit1 = *fpr1_curr++;
krista@1312
  2230
            digit2 = *fpr2_curr++;
krista@1312
  2231
krista@1312
  2232
            // Adjust for case-insensitive compare
krista@1312
  2233
            if (digit1 >= 'a' && digit1 <= 'f')
krista@1312
  2234
                digit1 -= _ASCII_LOWERCASE_OFFSET;
krista@1312
  2235
            if (digit2 >= 'a' && digit2 <= 'f')
krista@1312
  2236
                digit2 -= _ASCII_LOWERCASE_OFFSET;
krista@1427
  2237
krista@1312
  2238
            // We take advantage of the fact that 'a'-'f' are larger
krista@1312
  2239
            // integer values in the ASCII table than '0'-'9'.
krista@1312
  2240
            // This allows us to compare digits directly.
krista@1312
  2241
            if (digit1 > digit2) {
krista@1312
  2242
                *comparison = 1;
krista@1312
  2243
                return PEP_STATUS_OK;
krista@1312
  2244
            } else if (digit1 < digit2) {
krista@1312
  2245
                *comparison = -1;
krista@1312
  2246
                return PEP_STATUS_OK;
krista@1312
  2247
            }
krista@1427
  2248
krista@1312
  2249
            // pointers already advanced above. Keep going.
krista@1312
  2250
        }
krista@1312
  2251
        *comparison = 0;
krista@1312
  2252
        return PEP_STATUS_OK;
krista@1312
  2253
    }
krista@1312
  2254
    else if (fpr1_len > fpr2_len) {
krista@1312
  2255
        *comparison = 1;
krista@1312
  2256
        return PEP_STATUS_OK;
krista@1312
  2257
    }
krista@1312
  2258
    // Otherwise, fpr1_len < fpr2_len
krista@1312
  2259
    *comparison = -1;
krista@1312
  2260
    return PEP_STATUS_OK;
krista@1312
  2261
}
krista@1312
  2262
krista@1307
  2263
DYNAMIC_API PEP_STATUS get_trustwords(
roker@1509
  2264
    PEP_SESSION session, const pEp_identity* id1, const pEp_identity* id2,
krista@1307
  2265
    const char* lang, char **words, size_t *wsize, bool full
krista@1307
  2266
)
krista@1307
  2267
{
krista@1307
  2268
    assert(session);
krista@1307
  2269
    assert(id1);
krista@1307
  2270
    assert(id2);
krista@1307
  2271
    assert(id1->fpr);
krista@1307
  2272
    assert(id2->fpr);
krista@1307
  2273
    assert(words);
krista@1307
  2274
    assert(wsize);
krista@1427
  2275
krista@1307
  2276
    if (!(session && id1 && id2 && words && wsize) ||
krista@1307
  2277
        !(id1->fpr) || (!id2->fpr))
krista@1307
  2278
        return PEP_ILLEGAL_VALUE;
krista@1427
  2279
krista@1307
  2280
    const char *source1 = id1->fpr;
krista@1307
  2281
    const char *source2 = id2->fpr;
krista@1427
  2282
krista@1307
  2283
    *words = NULL;
krista@1307
  2284
    *wsize = 0;
krista@1307
  2285
krista@1307
  2286
    const size_t SHORT_NUM_TWORDS = 5;
krista@1427
  2287
krista@1307
  2288
    // N.B. THIS will have to be changed once we start checking trustword entropy.
krista@1307
  2289
    // For now, full is ALL, and otherwise it's 5-per-id.
krista@1307
  2290
    size_t max_words_per_id = (full ? 0 : SHORT_NUM_TWORDS);
krista@1427
  2291
krista@1307
  2292
    char* first_set = NULL;
krista@1307
  2293
    char* second_set = NULL;
krista@1307
  2294
    size_t first_wsize = 0;
krista@1307
  2295
    size_t second_wsize = 0;
krista@1427
  2296
krista@1312
  2297
    int fpr_comparison = -255;
krista@1312
  2298
    PEP_STATUS status = _compare_fprs(source1, source2, &fpr_comparison);
krista@1312
  2299
    if (status != PEP_STATUS_OK)
krista@1312
  2300
        return status;
krista@1312
  2301
krista@1307
  2302
    char* _retstr = NULL;
krista@1312
  2303
krista@1312
  2304
    switch (fpr_comparison) {
krista@1312
  2305
        case 1: // source1 > source2
krista@1312
  2306
            status = trustwords(session, source2, lang, &first_set, &first_wsize, max_words_per_id);
krista@1312
  2307
            if (status != PEP_STATUS_OK)
krista@1312
  2308
                goto error_release;
krista@1427
  2309
            status = trustwords(session, source1, lang, &second_set, &second_wsize, max_words_per_id);
krista@1312
  2310
            if (status != PEP_STATUS_OK)
krista@1312
  2311
                goto error_release;
krista@1312
  2312
            break;
krista@1427
  2313
        case 0:
krista@1312
  2314
        case -1: // source1 <= source2
krista@1312
  2315
            status = trustwords(session, source1, lang, &first_set, &first_wsize, max_words_per_id);
krista@1312
  2316
            if (status != PEP_STATUS_OK)
krista@1312
  2317
                goto error_release;
krista@1427
  2318
            status = trustwords(session, source2, lang, &second_set, &second_wsize, max_words_per_id);
krista@1312
  2319
            if (status != PEP_STATUS_OK)
krista@1312
  2320
                goto error_release;
krista@1315
  2321
            break;
krista@1312
  2322
        default:
krista@1312
  2323
            return PEP_UNKNOWN_ERROR; // shouldn't be possible
krista@1312
  2324
    }
krista@1427
  2325
krista@1307
  2326
    size_t _wsize = first_wsize + second_wsize;
krista@1427
  2327
krista@1315
  2328
    bool needs_space = (first_set[first_wsize - 1] != ' ');
krista@1427
  2329
krista@1315
  2330
    if (needs_space)
krista@1315
  2331
        _wsize++;
krista@1427
  2332
krista@1307
  2333
    _retstr = calloc(1, _wsize + 1);
krista@1427
  2334
krista@1307
  2335
    size_t len = strlcpy(_retstr, first_set, _wsize);
krista@1307
  2336
    if (len >= _wsize) {
krista@1307
  2337
        status = PEP_UNKNOWN_ERROR;
krista@1307
  2338
        goto error_release;
krista@1307
  2339
    }
krista@1315
  2340
    if (needs_space) {
krista@1315
  2341
        strlcat(_retstr, " ", _wsize);
krista@1315
  2342
        if (len >= _wsize) {
krista@1315
  2343
            status = PEP_UNKNOWN_ERROR;
krista@1315
  2344
            goto error_release;
krista@1315
  2345
        }
krista@1315
  2346
    }
krista@1307
  2347
    strlcat(_retstr, second_set, _wsize);
krista@1307
  2348
    if (len >= _wsize){
krista@1307
  2349
        status = PEP_UNKNOWN_ERROR;
krista@1307
  2350
        goto error_release;
krista@1307
  2351
    }
krista@1427
  2352
krista@1307
  2353
    *words = _retstr;
krista@1307
  2354
    *wsize = _wsize;
krista@1307
  2355
    status = PEP_STATUS_OK;
krista@1427
  2356
krista@1307
  2357
    goto the_end;
krista@1427
  2358
krista@1307
  2359
    error_release:
krista@1307
  2360
    free(_retstr);
krista@1427
  2361
krista@1307
  2362
    the_end:
krista@1307
  2363
    free(first_set);
krista@1307
  2364
    free(second_set);
krista@1307
  2365
    return status;
vb@1309
  2366
}
vb@1309
  2367
edouard@1553
  2368
DYNAMIC_API PEP_STATUS get_message_trustwords(
edouard@1553
  2369
    PEP_SESSION session, 
edouard@1553
  2370
    message *msg,
edouard@1553
  2371
    stringlist_t *keylist,
edouard@1553
  2372
    pEp_identity* received_by,
edouard@1553
  2373
    const char* lang, char **words, bool full
edouard@1553
  2374
)
edouard@1553
  2375
{
edouard@1553
  2376
    assert(session);
edouard@1553
  2377
    assert(msg);
edouard@1553
  2378
    assert(received_by);
edouard@1553
  2379
    assert(received_by->address);
edouard@1553
  2380
    assert(lang);
edouard@1553
  2381
    assert(words);
edouard@1553
  2382
edouard@1553
  2383
    if (!(session && 
edouard@1553
  2384
          msg &&
edouard@1553
  2385
          received_by && 
edouard@1553
  2386
          received_by->address && 
edouard@1553
  2387
          lang && 
edouard@1553
  2388
          words))
edouard@1553
  2389
        return PEP_ILLEGAL_VALUE;
edouard@1553
  2390
    
edouard@1557
  2391
    pEp_identity* partner = NULL;
edouard@1553
  2392
     
edouard@1553
  2393
    PEP_STATUS status = PEP_STATUS_OK;
edouard@1553
  2394
    
edouard@1553
  2395
    *words = NULL;
edouard@1553
  2396
edouard@1553
  2397
    // We want fingerprint of key that did sign the message
edouard@1553
  2398
edouard@1553
  2399
    if (keylist == NULL) {
edouard@1553
  2400
edouard@1553
  2401
        // Message is to be decrypted
roker@1554
  2402
        message *dst = NULL;
edouard@1553
  2403
        stringlist_t *_keylist = keylist;
edouard@1553
  2404
        PEP_rating rating;
edouard@1553
  2405
        PEP_decrypt_flags_t flags;
edouard@1553
  2406
        status = decrypt_message( session, msg, &dst, &_keylist, &rating, &flags);
edouard@1553
  2407
edouard@1553
  2408
        if (status != PEP_STATUS_OK) {
edouard@1553
  2409
            free_message(dst);
edouard@1553
  2410
            free_stringlist(_keylist);
edouard@1553
  2411
            return status;
edouard@1553
  2412
        }
edouard@1553
  2413
edouard@1553
  2414
        if (dst && dst->from && _keylist) {
edouard@1553
  2415
            partner = identity_dup(dst->from); 
edouard@1553
  2416
            if(partner){
edouard@1553
  2417
                free(partner->fpr);
edouard@1553
  2418
                partner->fpr = strdup(_keylist->value);
edouard@1553
  2419
                if (partner->fpr == NULL)
edouard@1553
  2420
                    status = PEP_OUT_OF_MEMORY;
edouard@1553
  2421
            } else {
edouard@1553
  2422
                status = PEP_OUT_OF_MEMORY;
edouard@1553
  2423
            }
edouard@1553
  2424
        } else {
edouard@1553
  2425
            status = PEP_UNKNOWN_ERROR;
edouard@1553
  2426
        }
edouard@1553
  2427
edouard@1553
  2428
        free_message(dst);
edouard@1553
  2429
        free_stringlist(_keylist);
edouard@1553
  2430
edouard@1553
  2431
    } else {
edouard@1553
  2432
edouard@1553
  2433
        // Message already decrypted
edouard@1553
  2434
        if (keylist->value) {
edouard@1553
  2435
            partner = identity_dup(msg->from); 
edouard@1553
  2436
            if(partner){
edouard@1553
  2437
                free(partner->fpr);
edouard@1553
  2438
                partner->fpr = strdup(keylist->value);
edouard@1553
  2439
                if (partner->fpr == NULL)
edouard@1553
  2440
                    status = PEP_OUT_OF_MEMORY;
edouard@1553
  2441
            } else {
edouard@1553
  2442
                status = PEP_OUT_OF_MEMORY;
edouard@1553
  2443
            }
edouard@1553
  2444
        } else {
edouard@1553
  2445
            status = PEP_ILLEGAL_VALUE;
edouard@1553
  2446
        }
edouard@1553
  2447
    }
edouard@1553
  2448
edouard@1553
  2449
    if (status != PEP_STATUS_OK) {
edouard@1553
  2450
        free_identity(partner);
edouard@1553
  2451
        return status;
edouard@1553
  2452
    }
edouard@1553
  2453
   
edouard@1553
  2454
    // Find own identity corresponding to given account address.
edouard@1553
  2455
    // In that case we want default key attached to own identity
edouard@1553
  2456
    pEp_identity *stored_identity = NULL;
edouard@1553
  2457
    status = get_identity(session,
edouard@1553
  2458
                          received_by->address,
edouard@1553
  2459
                          PEP_OWN_USERID,
edouard@1553
  2460
                          &stored_identity);
edouard@1553
  2461
edouard@1553
  2462
    if (status != PEP_STATUS_OK) {
edouard@1553
  2463
        free_identity(stored_identity);
edouard@1553
  2464
        return status;
edouard@1553
  2465
    }
edouard@1553
  2466
edouard@1553
  2467
    // get the trustwords
edouard@1553
  2468
    size_t wsize;
edouard@1553
  2469
    status = get_trustwords(session, 
edouard@1553
  2470
                            partner, received_by, 
edouard@1553
  2471
                            lang, words, &wsize, full);
edouard@1553
  2472
edouard@1553
  2473
    return status;
edouard@1553
  2474
}
krista@1325
  2475
krista@1325
  2476
DYNAMIC_API PEP_STATUS MIME_decrypt_message(
krista@1325
  2477
    PEP_SESSION session,
krista@1325
  2478
    const char *mimetext,
krista@1325
  2479
    size_t size,
krista@1325
  2480
    char** mime_plaintext,
krista@1325
  2481
    stringlist_t **keylist,
krista@1325
  2482
    PEP_rating *rating,
krista@1325
  2483
    PEP_decrypt_flags_t *flags
krista@1427
  2484
)
krista@1325
  2485
{
krista@1325
  2486
    PEP_STATUS status = PEP_STATUS_OK;
krista@1325
  2487
    message* tmp_msg = NULL;
krista@1325
  2488
    message* dec_msg = NULL;
krista@1427
  2489
krista@1325
  2490
    status = mime_decode_message(mimetext, size, &tmp_msg);
krista@1325
  2491
    if (status != PEP_STATUS_OK)
krista@1325
  2492
        goto pep_error;
krista@1427
  2493
krista@1325
  2494
    status = decrypt_message(session,
krista@1325
  2495
                             tmp_msg,
krista@1325
  2496
                             &dec_msg,
krista@1325
  2497
                             keylist,
krista@1325
  2498
                             rating,
krista@1325
  2499
                             flags);
krista@1325
  2500
    if (status != PEP_STATUS_OK)
krista@1325
  2501
        goto pep_error;
krista@1427
  2502
krista@1325
  2503
    status = mime_encode_message(dec_msg, false, mime_plaintext);
krista@1427
  2504
krista@1325
  2505
pep_error:
krista@1325
  2506
    free_message(tmp_msg);
krista@1325
  2507
    free_message(dec_msg);
krista@1427
  2508
krista@1325
  2509
    return status;
krista@1325
  2510
}
krista@1325
  2511
krista@1325
  2512
DYNAMIC_API PEP_STATUS MIME_encrypt_message(
krista@1325
  2513
    PEP_SESSION session,
krista@1325
  2514
    const char *mimetext,
krista@1325
  2515
    size_t size,
krista@1325
  2516
    stringlist_t* extra,
krista@1325
  2517
    char** mime_ciphertext,
krista@1325
  2518
    PEP_enc_format enc_format,
krista@1325
  2519
    PEP_encrypt_flags_t flags
krista@1427
  2520
)
krista@1325
  2521
{
krista@1325
  2522
    PEP_STATUS status = PEP_STATUS_OK;
krista@1325
  2523
    message* tmp_msg = NULL;
krista@1325
  2524
    message* enc_msg = NULL;
krista@1427
  2525
krista@1325
  2526
    status = mime_decode_message(mimetext, size, &tmp_msg);
krista@1325
  2527
    if (status != PEP_STATUS_OK)
krista@1325
  2528
        goto pep_error;
krista@1427
  2529
krista@1325
  2530
    // This isn't incoming, though... so we need to reverse the direction
krista@1325
  2531
    tmp_msg->dir = PEP_dir_outgoing;
krista@1325
  2532
    status = encrypt_message(session,
krista@1325
  2533
                             tmp_msg,
krista@1325
  2534
                             extra,
krista@1325
  2535
                             &enc_msg,
krista@1325
  2536
                             enc_format,
krista@1325
  2537
                             flags);
krista@1325
  2538
    if (status != PEP_STATUS_OK)
krista@1325
  2539
        goto pep_error;
krista@1427
  2540
krista@1325
  2541
    status = mime_encode_message(enc_msg, false, mime_ciphertext);
krista@1427
  2542
krista@1325
  2543
pep_error:
krista@1325
  2544
    free_message(tmp_msg);
krista@1325
  2545
    free_message(enc_msg);
krista@1325
  2546
krista@1325
  2547
    return status;
krista@1325
  2548
krista@1325
  2549
}