├── .gitignore ├── CMakeLists.txt ├── LICENSE ├── README.md ├── crypto ├── crypto_gcrypt.c ├── crypto_provider.h └── targets.cmake ├── profanity └── targets.cmake ├── store ├── omemo_file_store.c ├── omemo_store.h └── targets.cmake ├── structs ├── device_list.c ├── device_list.h ├── omemo_context.c ├── omemo_context.h ├── omemo_device.c ├── omemo_device.h └── targets.cmake ├── test ├── CMakeLists.txt ├── test_main.h ├── test_omemo_crypto.cpp ├── test_omemo_device.cpp ├── test_omemo_device_list.cpp ├── test_omemo_pubsub.cpp └── test_omemo_store.cpp └── xmpp ├── omemo_constants.h ├── pubsub.c ├── pubsub.h └── targets.cmake /.gitignore: -------------------------------------------------------------------------------- 1 | # Object files 2 | *.o 3 | *.ko 4 | *.obj 5 | *.elf 6 | 7 | # Precompiled Headers 8 | *.gch 9 | *.pch 10 | 11 | # Libraries 12 | *.lib 13 | *.a 14 | *.la 15 | *.lo 16 | 17 | # Shared objects (inc. Windows DLLs) 18 | *.dll 19 | *.so 20 | *.so.* 21 | *.dylib 22 | 23 | # Executables 24 | *.exe 25 | *.out 26 | *.app 27 | *.i*86 28 | *.x86_64 29 | *.hex 30 | 31 | # Debug files 32 | *.dSYM/ 33 | *.su 34 | 35 | # global Build directory 36 | build/* 37 | lib/* 38 | test/ext/* 39 | ext/* 40 | 41 | # VIM workspace 42 | *.swp 43 | -------------------------------------------------------------------------------- /CMakeLists.txt: -------------------------------------------------------------------------------- 1 | cmake_minimum_required (VERSION 2.7) 2 | 3 | project (profanity-omemo) 4 | 5 | ############################################################################### 6 | # for testing 7 | find_package (Threads REQUIRED) 8 | include (CTest) 9 | include (ExternalProject) 10 | 11 | ExternalProject_Add ( 12 | gtest 13 | URL https://github.com/google/googletest/archive/master.zip 14 | PREFIX ${PROJECT_SOURCE_DIR}/test/ext 15 | INSTALL_COMMAND "" 16 | ) 17 | # Get GTest informations 18 | ExternalProject_Get_Property (gtest source_dir binary_dir) 19 | 20 | add_library (libgtest IMPORTED STATIC GLOBAL) 21 | add_dependencies (libgtest gtest) 22 | 23 | # Set libgtest properties 24 | set_target_properties(libgtest PROPERTIES 25 | "IMPORTED_LOCATION" "${binary_dir}/googlemock/gtest/libgtest.a" 26 | "IMPORTED_LINK_INTERFACE_LIBRARIES" "${CMAKE_THREAD_LIBS_INIT}" 27 | ) 28 | include_directories("${source_dir}/googletest/include" 29 | "${source_dir}/googlemock/include") 30 | 31 | ############################################################################### 32 | 33 | set (LIBSIGNAL_DIR "${PROJECT_SOURCE_DIR}/ext/libsignal") 34 | set (LIBSIGNAL_INCLUDE_DIR "${LIBSIGNAL_DIR}/src/libsignal/src") 35 | 36 | ExternalProject_Add ( 37 | libsignal 38 | GIT_REPOSITORY "https://github.com/WhisperSystems/libsignal-protocol-c.git" 39 | GIT_TAG "master" 40 | PREFIX ${LIBSIGNAL_DIR} 41 | SOURCE_DIR "" 42 | BINARY_DIR libsignal 43 | CMAKE_ARGS -DCMAKE_BUILD_TYPE=Debug -D CMAKE_C_FLAGS=-fPIC -Wswitch -Wunused-variable -Wunused-value -Wshadow -Wint-conversion -Wpointer-sign -Wprotocol -Wshorten-64-to-32 44 | INSTALL_COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_BINARY_DIR}/libsignal/src/libsignal-protocol-c.a ${LIBSIGNAL_DIR}/ 45 | ) 46 | 47 | include_directories (${LIBSIGNAL_INCLUDE_DIR}) 48 | 49 | set (LIBSIGNAL ${LIBSIGNAL_DIR}/libsignal-protocol-c.a) 50 | find_library (LIBGCRYPT libgcrypt.so) 51 | find_package (LibXml2 REQUIRED) 52 | 53 | include_directories (${LIBXML2_INCLUDE_DIR}) 54 | 55 | set (CMAKE_RUNTIME_OUTPUT_DIRECTORY_DEBUG ${PROJECT_SOURCE_DIR}/lib/DEBUG) 56 | set (CMAKE_LIBRARY_OUTPUT_DIRECTORY_DEBUG ${PROJECT_SOURCE_DIR}/lib/DEBUG) 57 | set (CMAKE_RUNTIME_OUTPUT_DIRECTORY ${PROJECT_SOURCE_DIR}/lib) 58 | set (CMAKE_LIBRARY_OUTPUT_DIRECTORY ${PROJECT_SOURCE_DIR}/lib) 59 | 60 | set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -pedantic -std=c99 -fPIC") 61 | 62 | include_directories (${PROJECT_SOURCE_DIR}) 63 | 64 | include ("${PROJECT_SOURCE_DIR}/crypto/targets.cmake") 65 | include ("${PROJECT_SOURCE_DIR}/profanity/targets.cmake") 66 | include ("${PROJECT_SOURCE_DIR}/store/targets.cmake") 67 | include ("${PROJECT_SOURCE_DIR}/structs/targets.cmake") 68 | include ("${PROJECT_SOURCE_DIR}/xmpp/targets.cmake") 69 | 70 | add_library ( 71 | profanity-omemo SHARED 72 | ${CRYPTO_SRC} 73 | ${PROF_OMEMO_SRC} 74 | ${STORE_SRC} 75 | ${STRUCTS_SRC} 76 | ${XMPP_SRC} 77 | ) 78 | 79 | add_dependencies (profanity-omemo libsignal) 80 | 81 | target_link_libraries (profanity-omemo "${LIBSIGNAL}" "${LIBXML2_LIBRARIES}" 82 | "${LIBGCRYPT}") 83 | 84 | add_subdirectory ("${PROJECT_SOURCE_DIR}/test") 85 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Such new versions will 567 | be similar in spirit to the present version, but may differ in detail to 568 | address new problems or concerns. 569 | 570 | Each version is given a distinguishing version number. If the 571 | Program specifies that a certain numbered version of the GNU General 572 | Public License "or any later version" applies to it, you have the 573 | option of following the terms and conditions either of that numbered 574 | version or of any later version published by the Free Software 575 | Foundation. If the Program does not specify a version number of the 576 | GNU General Public License, you may choose any version ever published 577 | by the Free Software Foundation. 578 | 579 | If the Program specifies that a proxy can decide which future 580 | versions of the GNU General Public License can be used, that proxy's 581 | public statement of acceptance of a version permanently authorizes you 582 | to choose that version for the Program. 583 | 584 | Later license versions may give you additional or different 585 | permissions. However, no additional obligations are imposed on any 586 | author or copyright holder as a result of your choosing to follow a 587 | later version. 588 | 589 | 15. Disclaimer of Warranty. 590 | 591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 592 | APPLICABLE LAW. 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Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | {one line to give the program's name and a brief idea of what it does.} 635 | Copyright (C) {year} {name of author} 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | {project} Copyright (C) {year} {fullname} 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # profanity-omemo 2 | 3 | ## Build 4 | The following dependencies are needed to build the plugin: 5 | * `cmake` 6 | * `libxml2` 7 | * `libgcrypt` 8 | * `libsignal-protocol-c.a` 9 | 10 | `libsignal-protocol-c.a` is linked to the plugin statically so it is not a runtime dependency and can be deleted after building 11 | `profanity-omemo` whereas `libxml2` and `libgcrypt` is needed at runtime. The signal library will be built and linked with the 12 | OMEMO plugin automatically and will not install anything to your system. 13 | 14 | The plugin can be built with the following steps: 15 | ``` 16 | $ cd profanity-omemo 17 | $ mkdir build 18 | $ cd build 19 | $ cmake (for debug purposes: -DCMAKE_BUILD_TYPE=Debug; enable testing: -DBUILD_TESTING=ON) .. 20 | $ make 21 | ``` 22 | You can run the (for now minimal) test suite: 23 | ``` 24 | $ make test 25 | ``` 26 | which will show a summary of all run tests. You can also run a single test binary for more detailed informations. 27 | -------------------------------------------------------------------------------- /crypto/crypto_gcrypt.c: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | 4 | #include "crypto_provider.h" 5 | 6 | 7 | int omemo_init_provider() 8 | { 9 | if (!gcry_check_version(NULL)) { 10 | fputs("Wrong libgcrypt version!", stderr); 11 | return -1; 12 | } 13 | 14 | gcry_control(GCRYCTL_INITIALIZATION_FINISHED, 0); 15 | 16 | return 0; 17 | } 18 | 19 | int omemo_random_numbers(uint8_t *data, size_t len, void *user_data) 20 | { 21 | if (!data) { 22 | return SG_ERR_INVAL; 23 | } 24 | 25 | gcry_randomize(data, len, GCRY_STRONG_RANDOM); 26 | 27 | return 0; 28 | } 29 | 30 | int omemo_hmac_sha256_init(void **hmac_context, const uint8_t *key, 31 | size_t data_len, void *user_data) 32 | { 33 | if (!hmac_context || !key) { 34 | return SG_ERR_INVAL; 35 | } 36 | 37 | UNUSED(user_data); 38 | 39 | gcry_error_t err = GPG_ERR_NO_ERROR; 40 | gcry_mac_hd_t *hd = NULL; 41 | 42 | hd = malloc(sizeof(gcry_mac_hd_t)); 43 | if (!hd) { 44 | return SG_ERR_NOMEM; 45 | } 46 | 47 | err = gcry_mac_open(hd, GCRY_MAC_HMAC_SHA256, 0, NULL); 48 | if (err) { 49 | free(hd); 50 | return SG_ERR_UNKNOWN; 51 | } 52 | 53 | err = gcry_mac_setkey(*hd, key, data_len); 54 | if (err) { 55 | free(hd); 56 | return SG_ERR_UNKNOWN; 57 | } 58 | 59 | *hmac_context = hd; 60 | 61 | return 0; 62 | } 63 | 64 | int omemo_hmac_sha256_update(void *hmac_context, const uint8_t *data, 65 | size_t data_len, void *user_data) 66 | { 67 | if (!hmac_context || !data) { 68 | return SG_ERR_INVAL; 69 | } 70 | 71 | UNUSED(user_data); 72 | 73 | gcry_error_t err = GPG_ERR_NO_ERROR; 74 | gcry_mac_hd_t *hd = hmac_context; 75 | 76 | err = gcry_mac_write(*hd, data, data_len); 77 | if (err) { 78 | free(hd); 79 | return SG_ERR_UNKNOWN; 80 | } 81 | 82 | return 0; 83 | } 84 | 85 | int omemo_hmac_sha256_final(void *hmac_context, signal_buffer **output, 86 | void *user_data) 87 | { 88 | UNUSED(user_data); 89 | 90 | if (!hmac_context || !output) { 91 | return SG_ERR_INVAL; 92 | } 93 | 94 | gcry_error_t err = GPG_ERR_NO_ERROR; 95 | gcry_mac_hd_t *hd = hmac_context; 96 | signal_buffer *sig_buffer = NULL; 97 | size_t mac_len; 98 | 99 | mac_len = gcry_mac_get_algo_maclen(GCRY_MAC_HMAC_SHA256); 100 | uint8_t buffer[mac_len]; 101 | 102 | err = gcry_mac_read(*hd, buffer, &mac_len); 103 | if (err) { 104 | free(hd); 105 | return SG_ERR_UNKNOWN; 106 | } 107 | 108 | sig_buffer = signal_buffer_create(buffer, mac_len); 109 | if (!sig_buffer) { 110 | free(hd); 111 | return SG_ERR_UNKNOWN; 112 | } 113 | 114 | *output = sig_buffer; 115 | 116 | return 0; 117 | } 118 | 119 | void omemo_hmac_sha256_cleanup(void *hmac_context, void *user_data) 120 | { 121 | UNUSED(user_data); 122 | 123 | gcry_mac_hd_t *hd = hmac_context; 124 | 125 | if (!hmac_context) { 126 | return; 127 | } 128 | 129 | gcry_mac_close(*hd); 130 | free(hmac_context); 131 | } 132 | 133 | int omemo_sha512_digest_init(void **digest_context, void *user_data) 134 | { 135 | UNUSED(user_data); 136 | 137 | if (!digest_context) { 138 | return SG_ERR_INVAL; 139 | } 140 | 141 | gcry_error_t err = GPG_ERR_NO_ERROR; 142 | gcry_md_hd_t *hd = NULL; 143 | 144 | hd = malloc(sizeof(gcry_md_hd_t)); 145 | if (!hd) { 146 | return SG_ERR_NOMEM; 147 | } 148 | 149 | err = gcry_md_open(hd, GCRY_MD_SHA512, 0); 150 | if (err < 0) { 151 | return SG_ERR_UNKNOWN; 152 | } 153 | 154 | *digest_context = hd; 155 | 156 | return 0; 157 | } 158 | 159 | int omemo_sha512_digest_update(void *digest_context, const uint8_t *data, 160 | size_t data_len, void *user_data) 161 | { 162 | UNUSED(user_data); 163 | 164 | if (!digest_context || !data) { 165 | puts("digest update error"); 166 | return SG_ERR_INVAL; 167 | } 168 | 169 | gcry_md_hd_t *hd = digest_context; 170 | 171 | gcry_md_write(*hd, data, data_len); 172 | 173 | return 0; 174 | } 175 | 176 | int omemo_sha512_digest_final(void *digest_context, signal_buffer **output, 177 | void *user_data) 178 | { 179 | UNUSED(user_data); 180 | 181 | if (!digest_context || !output) { 182 | return SG_ERR_INVAL; 183 | } 184 | 185 | uint8_t *buffer = NULL; 186 | gcry_md_hd_t *hd = digest_context; 187 | signal_buffer *out = NULL; 188 | size_t len; 189 | 190 | len = gcry_md_get_algo_dlen(GCRY_MD_SHA512); 191 | 192 | buffer = gcry_md_read(*hd, GCRY_MD_SHA512); 193 | if (!buffer) { 194 | puts("digest final error"); 195 | return SG_ERR_UNKNOWN; 196 | } 197 | 198 | out = signal_buffer_create(buffer, len); 199 | if (!out) { 200 | puts("digest final error"); 201 | return SG_ERR_NOMEM; 202 | } 203 | 204 | *output = out; 205 | 206 | return 0; 207 | } 208 | 209 | void omemo_sha512_digest_cleanup(void *digest_context, void *user_data) 210 | { 211 | UNUSED(user_data); 212 | 213 | if (!digest_context) { 214 | puts("digest cleanup error"); 215 | return; 216 | } 217 | 218 | gcry_md_hd_t *hd = digest_context; 219 | 220 | gcry_md_close(*hd); 221 | free(digest_context); 222 | } 223 | 224 | static int omemo_endecrypt_aes_ctr(signal_buffer **output, const uint8_t *key, 225 | size_t key_len, const uint8_t *iv, 226 | size_t iv_len, const uint8_t *text, 227 | size_t text_len, int mode) 228 | { 229 | int cipher_mode = GCRY_CIPHER_MODE_CTR; 230 | int cipher_algo; 231 | gcry_cipher_hd_t handle; 232 | uint8_t *buffer; 233 | gcry_error_t err = GPG_ERR_NO_ERROR; 234 | signal_buffer *output_buffer; 235 | 236 | switch (key_len) { 237 | case 16: 238 | cipher_algo = GCRY_CIPHER_AES128; 239 | break; 240 | case 24: 241 | cipher_algo = GCRY_CIPHER_AES192; 242 | break; 243 | case 32: 244 | cipher_algo = GCRY_CIPHER_AES256; 245 | break; 246 | default: 247 | puts("unknown cipher length"); 248 | return SG_ERR_UNKNOWN; 249 | } 250 | 251 | err = gcry_cipher_open(&handle, cipher_algo, cipher_mode, 0); 252 | if (err) { 253 | puts("cipher open error"); 254 | return SG_ERR_UNKNOWN; 255 | } 256 | 257 | err = gcry_cipher_setkey(handle, key, key_len); 258 | if (err) { 259 | puts("cipher set key error"); 260 | gcry_cipher_close(handle); 261 | return SG_ERR_UNKNOWN; 262 | } 263 | 264 | err = gcry_cipher_setiv(handle, iv, iv_len); 265 | if (err) { 266 | puts("cipher set iv error"); 267 | gcry_cipher_close(handle); 268 | return SG_ERR_UNKNOWN; 269 | } 270 | 271 | buffer = malloc(text_len); 272 | if (!buffer) { 273 | gcry_cipher_close(handle); 274 | return SG_ERR_NOMEM; 275 | } 276 | 277 | if (mode == AES_CTR_ENCRYPT) { 278 | err = gcry_cipher_encrypt(handle, buffer, text_len, text, text_len); 279 | } else { 280 | err = gcry_cipher_decrypt(handle, buffer, text_len, text, text_len); 281 | } 282 | if (err) { 283 | puts("encrypt/decrypt error"); 284 | gcry_cipher_close(handle); 285 | free(buffer); 286 | return SG_ERR_UNKNOWN; 287 | } 288 | 289 | output_buffer = signal_buffer_create(buffer, text_len); 290 | if (!output_buffer) { 291 | gcry_cipher_close(handle); 292 | free(buffer); 293 | return SG_ERR_NOMEM; 294 | } 295 | 296 | gcry_cipher_close(handle); 297 | free(buffer); 298 | 299 | *output = output_buffer; 300 | 301 | return 0; 302 | } 303 | 304 | static int omemo_encrypt_aes_cbc(signal_buffer **output, 305 | const uint8_t *key, size_t key_len, 306 | const uint8_t *iv, size_t iv_len, 307 | const uint8_t *plaintext, size_t plaintext_len) 308 | { 309 | int cipher_mode = GCRY_CIPHER_MODE_CBC; 310 | int cipher_algo; 311 | gcry_cipher_hd_t handle; 312 | gcry_error_t err = GPG_ERR_NO_ERROR; 313 | uint8_t *buffer; 314 | uint8_t *plaintext_padded; 315 | size_t block_size; 316 | size_t padding_len; 317 | size_t plaintext_padded_len; 318 | signal_buffer *output_buffer; 319 | 320 | switch (key_len) { 321 | case 16: 322 | cipher_algo = GCRY_CIPHER_AES128; 323 | break; 324 | case 32: 325 | cipher_algo = GCRY_CIPHER_AES192; 326 | break; 327 | case 64: 328 | cipher_algo = GCRY_CIPHER_AES256; 329 | break; 330 | default: 331 | puts("unknown cipher length"); 332 | return SG_ERR_UNKNOWN; 333 | } 334 | 335 | block_size = gcry_cipher_get_algo_blklen(cipher_algo); 336 | if (!block_size) { 337 | puts("cipher block length error"); 338 | return SG_ERR_UNKNOWN; 339 | } 340 | 341 | err = gcry_cipher_open(&handle, cipher_algo, cipher_mode, 0); 342 | if (err) { 343 | puts("cipher open error"); 344 | return SG_ERR_UNKNOWN; 345 | } 346 | 347 | err = gcry_cipher_setkey(handle, key, key_len); 348 | if (err) { 349 | puts("cipher set key error"); 350 | gcry_cipher_close(handle); 351 | return SG_ERR_UNKNOWN; 352 | } 353 | 354 | err = gcry_cipher_setiv(handle, iv, iv_len); 355 | if (err) { 356 | puts("cipher set iv error"); 357 | gcry_cipher_close(handle); 358 | return SG_ERR_UNKNOWN; 359 | } 360 | 361 | padding_len = block_size - (plaintext_len % block_size); 362 | plaintext_padded_len = plaintext_len + padding_len; 363 | plaintext_padded = malloc(plaintext_padded_len); 364 | if (!plaintext_padded) { 365 | return SG_ERR_NOMEM; 366 | } 367 | 368 | memset(plaintext_padded, (uint8_t) padding_len, plaintext_padded_len); 369 | memcpy(plaintext_padded, plaintext, plaintext_len); 370 | 371 | buffer = malloc(plaintext_padded_len); 372 | if (!buffer) { 373 | free(plaintext_padded); 374 | gcry_cipher_close(handle); 375 | return SG_ERR_NOMEM; 376 | } 377 | 378 | err = gcry_cipher_encrypt(handle, buffer, plaintext_padded_len, plaintext_padded, 379 | plaintext_padded_len); 380 | if (err) { 381 | puts("cipher encrypt error"); 382 | gcry_cipher_close(handle); 383 | free(plaintext_padded); 384 | free(buffer); 385 | return SG_ERR_UNKNOWN; 386 | } 387 | 388 | output_buffer = signal_buffer_create(buffer, plaintext_padded_len); 389 | if (!output_buffer) { 390 | gcry_cipher_close(handle); 391 | free(plaintext_padded); 392 | free(buffer); 393 | return SG_ERR_NOMEM; 394 | } 395 | 396 | *output = output_buffer; 397 | 398 | gcry_cipher_close(handle); 399 | free(plaintext_padded); 400 | free(buffer); 401 | 402 | return 0; 403 | } 404 | 405 | int omemo_encrypt(signal_buffer **output, int cipher, 406 | const uint8_t *key, size_t key_len, 407 | const uint8_t *iv, size_t iv_len, 408 | const uint8_t *plaintext, size_t plaintext_len, 409 | void *user_data) 410 | { 411 | UNUSED(user_data); 412 | 413 | if (!output || !key || !iv || !plaintext) { 414 | return SG_ERR_UNKNOWN; 415 | } 416 | 417 | if (cipher == SG_CIPHER_AES_CTR_NOPADDING) { 418 | return omemo_endecrypt_aes_ctr(output, key, key_len, iv, iv_len, plaintext, plaintext_len, AES_CTR_ENCRYPT); 419 | } else if (cipher == SG_CIPHER_AES_CBC_PKCS5) { 420 | return omemo_encrypt_aes_cbc(output, key, key_len, iv, iv_len, plaintext, plaintext_len); 421 | } else { 422 | return SG_ERR_UNKNOWN; 423 | } 424 | } 425 | 426 | static int omemo_decrypt_aes_cbc(signal_buffer **output, const uint8_t *key, 427 | size_t key_len, const uint8_t *iv, 428 | size_t iv_len, const uint8_t *ciphertext, 429 | size_t ciphertext_len) 430 | { 431 | int cipher_mode = GCRY_CIPHER_MODE_CBC; 432 | int cipher_algo; 433 | gcry_cipher_hd_t handle; 434 | gcry_error_t err = GPG_ERR_NO_ERROR; 435 | uint8_t *buffer; 436 | signal_buffer *output_buffer; 437 | size_t padding_len; 438 | size_t plaintext_unpadded_len; 439 | 440 | switch (key_len) { 441 | case 16: 442 | cipher_algo = GCRY_CIPHER_AES128; 443 | break; 444 | case 32: 445 | cipher_algo = GCRY_CIPHER_AES192; 446 | break; 447 | case 64: 448 | cipher_algo = GCRY_CIPHER_AES256; 449 | break; 450 | default: 451 | puts("unknown cipher length"); 452 | return SG_ERR_UNKNOWN; 453 | } 454 | 455 | err = gcry_cipher_open(&handle, cipher_algo, cipher_mode, 0); 456 | if (err) { 457 | puts("cipher open error"); 458 | return SG_ERR_UNKNOWN; 459 | } 460 | 461 | err = gcry_cipher_setkey(handle, key, key_len); 462 | if (err) { 463 | puts("cipher set key error"); 464 | gcry_cipher_close(handle); 465 | return SG_ERR_UNKNOWN; 466 | } 467 | 468 | err = gcry_cipher_setiv(handle, iv, iv_len); 469 | if (err) { 470 | puts("cipher set iv error"); 471 | gcry_cipher_close(handle); 472 | return SG_ERR_UNKNOWN; 473 | } 474 | 475 | buffer = malloc(ciphertext_len); 476 | if (!buffer) { 477 | gcry_cipher_close(handle); 478 | return SG_ERR_NOMEM; 479 | } 480 | 481 | err = gcry_cipher_decrypt(handle, buffer, ciphertext_len, ciphertext, ciphertext_len); 482 | if (err) { 483 | puts("cipher encrypt error"); 484 | gcry_cipher_close(handle); 485 | free(buffer); 486 | return SG_ERR_UNKNOWN; 487 | } 488 | 489 | padding_len = buffer[ciphertext_len-1]; 490 | plaintext_unpadded_len = ciphertext_len - padding_len; 491 | 492 | output_buffer = signal_buffer_create(buffer, plaintext_unpadded_len); 493 | if (!output_buffer) { 494 | gcry_cipher_close(handle); 495 | free(buffer); 496 | return SG_ERR_NOMEM; 497 | } 498 | 499 | *output = output_buffer; 500 | 501 | gcry_cipher_close(handle); 502 | free(buffer); 503 | 504 | return 0; 505 | } 506 | 507 | int omemo_decrypt(signal_buffer **output, int cipher, 508 | const uint8_t *key, size_t key_len, 509 | const uint8_t *iv, size_t iv_len, 510 | const uint8_t *ciphertext, size_t ciphertext_len, 511 | void *user_data) 512 | { 513 | UNUSED(user_data); 514 | 515 | if (!output || !key || !iv || !ciphertext) { 516 | return SG_ERR_UNKNOWN; 517 | } 518 | 519 | if (cipher == SG_CIPHER_AES_CTR_NOPADDING) { 520 | return omemo_endecrypt_aes_ctr(output, key, key_len, iv, iv_len, ciphertext, ciphertext_len, AES_CTR_DECRYPT); 521 | } else if (cipher == SG_CIPHER_AES_CBC_PKCS5) { 522 | return omemo_decrypt_aes_cbc(output, key, key_len, iv, iv_len, ciphertext, ciphertext_len); 523 | } else { 524 | return SG_ERR_UNKNOWN; 525 | } 526 | } 527 | 528 | 529 | signal_crypto_provider omemo_crypto_provider = { 530 | .random_func = omemo_random_numbers, 531 | .hmac_sha256_init_func = omemo_hmac_sha256_init, 532 | .hmac_sha256_update_func = omemo_hmac_sha256_update, 533 | .hmac_sha256_final_func = omemo_hmac_sha256_final, 534 | .hmac_sha256_cleanup_func = omemo_hmac_sha256_cleanup, 535 | .sha512_digest_init_func = omemo_sha512_digest_init, 536 | .sha512_digest_update_func = omemo_sha512_digest_update, 537 | .sha512_digest_final_func = omemo_sha512_digest_final, 538 | .sha512_digest_cleanup_func = omemo_sha512_digest_cleanup 539 | }; 540 | -------------------------------------------------------------------------------- /crypto/crypto_provider.h: -------------------------------------------------------------------------------- 1 | #ifndef PROF_OMEMO_CRYPTO_PROVIDER_H 2 | #define PROF_OMEMO_CRYPTO_PROVIDER_H 3 | 4 | #include 5 | 6 | #ifdef __cplusplus 7 | extern "C" { 8 | #endif 9 | 10 | #define AES_CTR_ENCRYPT 1 11 | #define AES_CTR_DECRYPT 0 12 | 13 | #define UNUSED(x) (void)(x) 14 | 15 | extern signal_crypto_provider omemo_crypto_provider; 16 | 17 | int omemo_init_provider(void); 18 | 19 | int omemo_random_numbers(uint8_t *data, size_t len, void *user_data); 20 | 21 | int omemo_hmac_sha256_init(void **hmac_context, const uint8_t *key, 22 | size_t key_len, void *user_data); 23 | 24 | int omemo_hmac_sha256_update(void *hmac_context, const uint8_t *data, 25 | size_t data_len, void *user_data); 26 | 27 | int omemo_hmac_sha256_final(void *hmac_context, signal_buffer **output, 28 | void *user_data); 29 | 30 | void omemo_hmac_sha256_cleanup(void *hmac_context, void *user_data); 31 | 32 | int omemo_sha512_digest_init(void **digest_context, void *user_data); 33 | 34 | int omemo_sha512_digest_update(void *digest_context, const uint8_t *data, 35 | size_t data_len, void *user_data); 36 | 37 | int omemo_sha512_digest_final(void *digest_context, signal_buffer **output, 38 | void *user_data); 39 | 40 | void omemo_sha512_digest_cleanup(void *digest_context, void *user_data); 41 | 42 | 43 | int omemo_encrypt(signal_buffer **output, int cipher, 44 | const uint8_t *key, size_t key_len, 45 | const uint8_t *iv, size_t iv_len, 46 | const uint8_t *plaintext, size_t plaintext_len, 47 | void *user_data); 48 | 49 | int omemo_decrypt(signal_buffer **output, int cipher, 50 | const uint8_t *key, size_t key_len, 51 | const uint8_t *iv, size_t iv_len, 52 | const uint8_t *ciphertext, size_t ciphertext_len, 53 | void *user_data); 54 | 55 | 56 | #ifdef __cplusplus 57 | } 58 | #endif 59 | 60 | #endif /* PROF_OMEMO_CRYPTO_PROVIDER_H */ 61 | -------------------------------------------------------------------------------- /crypto/targets.cmake: -------------------------------------------------------------------------------- 1 | set ( 2 | CRYPTO_SRC 3 | crypto/crypto_provider.h 4 | crypto/crypto_gcrypt.c 5 | ) 6 | -------------------------------------------------------------------------------- /profanity/targets.cmake: -------------------------------------------------------------------------------- 1 | set (PROF_OMEMO_SRC 2 | ) 3 | -------------------------------------------------------------------------------- /store/omemo_file_store.c: -------------------------------------------------------------------------------- 1 | #if _POSIX_C_SOURCE <= 200809L || !defined( _POSIX_C_SOURCE ) 2 | #define _POSIX_C_SOURCE 200809L 3 | #endif 4 | 5 | #if _XOPEN_SOURCE <= 500 || !defined( _XOPEN_SOURCE ) 6 | #define _XOPEN_SOURCE 500 7 | #endif 8 | 9 | #include 10 | #include 11 | #include 12 | #include 13 | #include 14 | #include 15 | #include 16 | #include 17 | #include 18 | #include 19 | #include 20 | #include 21 | #include 22 | #include 23 | #include 24 | #include 25 | 26 | static const char se_file_name[] = "session"; 27 | static const char dev_file_name[] = "devices"; 28 | static const char pre_key_folder_name[] = "pre_keys"; 29 | static const char signed_pre_key_folder_name[] = "signed_pre_keys"; 30 | static const char id_pub_key_file_name[] = "id_key.pub"; 31 | static const char id_priv_key_file_name[] = "id_key.priv"; 32 | 33 | struct omemo_store_context *omemo_store_context_create(struct omemo_context *context) 34 | { 35 | struct omemo_store_context *store_context; 36 | const static struct omemo_store_context store_compound_init = { 37 | .session_store = { 38 | .load_session_func = omemo_load_session, 39 | .get_sub_device_sessions_func = omemo_get_sub_device_sessions, 40 | .store_session_func = omemo_store_session, 41 | .contains_session_func = omemo_contains_session, 42 | .delete_session_func = omemo_delete_session, 43 | .delete_all_sessions_func = omemo_delete_all_sessions, 44 | .destroy_func = omemo_session_store_destroy, 45 | }, 46 | .pre_key_store = { 47 | .load_pre_key = omemo_load_pre_key, 48 | .store_pre_key = omemo_store_pre_key, 49 | .contains_pre_key = omemo_contains_pre_key, 50 | .remove_pre_key = omemo_remove_pre_key, 51 | .destroy_func = omemo_pre_key_store_destroy, 52 | }, 53 | .signed_pre_key_store = { 54 | .load_signed_pre_key = omemo_load_signed_pre_key, 55 | .store_signed_pre_key = omemo_store_signed_pre_key, 56 | .contains_signed_pre_key = omemo_contains_signed_pre_key, 57 | .remove_signed_pre_key = omemo_remove_signed_pre_key, 58 | .destroy_func = omemo_signed_pre_key_store_destroy, 59 | }, 60 | .identity_key_store = { 61 | .get_identity_key_pair = omemo_get_identity_key_pair, 62 | .get_local_registration_id = omemo_get_local_registration_id, 63 | .save_identity = omemo_save_identity, 64 | .is_trusted_identity = omemo_is_trusted_identity, 65 | .destroy_func = omemo_identity_key_store_destroy, 66 | } 67 | }; 68 | 69 | if (!context) { 70 | errno = EINVAL; 71 | return NULL; 72 | } 73 | 74 | store_context = malloc(sizeof(struct omemo_store_context)); 75 | if (!store_context) { 76 | return NULL; 77 | } 78 | 79 | *store_context = store_compound_init; 80 | 81 | store_context->session_store.user_data = context; 82 | store_context->pre_key_store.user_data = context; 83 | store_context->signed_pre_key_store.user_data = context; 84 | store_context->identity_key_store.user_data = context; 85 | 86 | return store_context; 87 | } 88 | 89 | 90 | static int omemo_mk_dir(const char *path) 91 | { 92 | char path_buf[PATH_MAX]; 93 | char *p = NULL; 94 | size_t len; 95 | 96 | len = snprintf(path_buf, sizeof(path_buf), "%s", path); 97 | if (path_buf[len - 1] == '/') { 98 | path_buf[len - 1] = 0; 99 | } else { 100 | *strrchr(path_buf, '/') = 0; 101 | } 102 | 103 | for(p = path_buf + 1; *p; ++p) { 104 | if (*p == '/') { 105 | *p = 0; 106 | if (mkdir(path_buf, S_IRWXU) != 0) { 107 | if (errno != EEXIST) { 108 | return -1; 109 | } 110 | } 111 | 112 | *p = '/'; 113 | } 114 | } 115 | if (mkdir(path_buf, S_IRWXU) != 0) { 116 | if (errno != EEXIST) { 117 | return -1; 118 | } 119 | } 120 | 121 | return 0; 122 | } 123 | 124 | /** 125 | * @brief Get the path to the pre key store to buffer 126 | * 127 | * @param local_user Pointer to the address of the local user 128 | * @param buffer Pointer to an allocated buffer 129 | * @param buf_len Length of the buffer 130 | * 131 | * @retval 0 The path to pre key store was found and written to the 132 | * buffer 133 | * @retval 1 The path to pre key store was not found but written to 134 | * buffer 135 | * @retval -1 An error occurred and `errno` is set to indicate the 136 | * cause 137 | */ 138 | static int omemo_get_pre_key_store(const signal_protocol_address *local_user, 139 | char *buffer, size_t buf_len) 140 | { 141 | size_t bytes_written; 142 | struct stat st = {0}; 143 | 144 | if (!local_user || !buffer) { 145 | errno = EINVAL; 146 | return -1; 147 | } 148 | 149 | bytes_written = snprintf(buffer, buf_len, "%s/%s", getenv("HOME"), 150 | OMEMO_WORKING_DIR); 151 | 152 | bytes_written += snprintf(buffer + bytes_written, local_user->name_len + 2, 153 | "/%s", local_user->name); 154 | 155 | bytes_written += snprintf(buffer + bytes_written, 156 | buf_len - bytes_written, 157 | "/%d/%s/", local_user->device_id, 158 | pre_key_folder_name); 159 | 160 | if (bytes_written > buf_len) { 161 | errno = ENOBUFS; 162 | return -1; 163 | } 164 | 165 | return (stat(buffer, &st) < 0) ? 1 : 0; 166 | } 167 | 168 | /** 169 | * @brief Get the path to the signed pre key store to buffer 170 | * 171 | * @param local_user Pointer to the address of the local user 172 | * @param buffer Pointer to an allocated buffer 173 | * @param buf_len Length of the buffer 174 | * 175 | * @retval 0 The path to signed pre key store was found and written 176 | * to the buffer 177 | * @retval 1 The path to signed pre key store was not found but 178 | * written to buffer 179 | * @retval -1 An error occurred and `errno` is set to indicate the 180 | * cause 181 | */ 182 | static int 183 | omemo_get_signed_pre_key_store(const signal_protocol_address *local_user, 184 | char *buffer, size_t buf_len) 185 | { 186 | size_t bytes_written; 187 | struct stat st = {0}; 188 | 189 | if (!local_user || !buffer) { 190 | errno = EINVAL; 191 | return -1; 192 | } 193 | 194 | bytes_written = snprintf(buffer, buf_len, "%s/%s", getenv("HOME"), 195 | OMEMO_WORKING_DIR); 196 | 197 | bytes_written += snprintf(buffer + bytes_written, local_user->name_len + 2, 198 | "/%s", local_user->name); 199 | 200 | bytes_written += snprintf(buffer + bytes_written, 201 | buf_len - bytes_written, 202 | "/%d/%s/", local_user->device_id, 203 | signed_pre_key_folder_name); 204 | 205 | if (bytes_written > buf_len) { 206 | errno = ENOBUFS; 207 | return -1; 208 | } 209 | 210 | return (stat(buffer, &st) < 0) ? 1 : 0; 211 | } 212 | 213 | static int omemo_get_identity_key_store(const signal_protocol_address *local_user, 214 | char *buffer, size_t buf_len) 215 | { 216 | size_t bytes_written; 217 | struct stat st = {0}; 218 | 219 | if (!local_user || !buffer) { 220 | errno = EINVAL; 221 | return -1; 222 | } 223 | 224 | bytes_written = snprintf(buffer, buf_len, "%s/%s", getenv("HOME"), 225 | OMEMO_WORKING_DIR); 226 | 227 | bytes_written += snprintf(buffer + bytes_written, local_user->name_len + 2, 228 | "/%s", local_user->name); 229 | 230 | bytes_written += snprintf(buffer + bytes_written, buf_len - bytes_written, 231 | "%d/", local_user->device_id); 232 | 233 | if (bytes_written > buf_len) { 234 | errno = ENOBUFS; 235 | return -1; 236 | } 237 | 238 | return (stat(buffer, &st) < 0) ? 1: 0; 239 | } 240 | 241 | /** 242 | * @brief Checks if a directory in the OMEMO directory structure exists 243 | * and returns the path. 244 | * 245 | * @param local_user The local OMEMO user 246 | * @param user The user whose directory to find or `NULL` if the directory 247 | * of the local user should be found 248 | * @param file The file's name to find or `NULL` to only look for 249 | * the directory 250 | * @param buffer The allocated buffer to write the path to 251 | * @param buf_len The lenght of the buffer in bytes 252 | * 253 | * @retval 0 The directory was found and correctly written to buffer 254 | * @retval 1 The directory was not found but the correct path was 255 | * written to the buffer 256 | * @retval -1 An error occurred and errno is set to indicate the 257 | * cause 258 | */ 259 | 260 | static int omemo_get_dir(const signal_protocol_address *local_user, 261 | const signal_protocol_address *user, 262 | const char *file, char *buffer, size_t buf_len) 263 | { 264 | if (!local_user || !buffer || !buf_len) { 265 | errno = EINVAL; 266 | return -1; 267 | } 268 | 269 | size_t bytes_written; 270 | struct stat st = {0}; 271 | 272 | bytes_written = snprintf(buffer, buf_len, "%s/%s/%s/%d", 273 | getenv("HOME"), OMEMO_WORKING_DIR, 274 | local_user->name, local_user->device_id); 275 | 276 | if (!user || !strncmp(local_user->name, user->name, 277 | local_user->name_len)) { 278 | /* local user and searched user are the same */ 279 | if (file) { 280 | bytes_written += snprintf(buffer + bytes_written, 281 | buf_len - bytes_written, 282 | "/%s", file); 283 | } 284 | } else { 285 | bytes_written += (!strcmp(file, dev_file_name) 286 | || !user->device_id) 287 | ? snprintf(buffer+bytes_written, buf_len-bytes_written, 288 | "/%s/%s", "contacts", user->name) 289 | : snprintf(buffer+bytes_written, buf_len-bytes_written, 290 | "/%s/%s/%d", "contacts", user->name, 291 | user->device_id) 292 | ; 293 | 294 | if (file) { 295 | bytes_written += snprintf(buffer + bytes_written, 296 | buf_len - bytes_written, 297 | "/%s", file); 298 | } 299 | } 300 | 301 | if (bytes_written >= buf_len) { 302 | errno = ENOBUFS; 303 | return -1; 304 | } 305 | if (stat(buffer, &st) < 0) { 306 | return 1; 307 | } 308 | 309 | return 0; 310 | } 311 | 312 | /** 313 | * @brief Deletes a node in file tree walk 314 | * 315 | * @retval 0 The node was removed successfully 316 | * @retval -1 An error occurred while removing the node 317 | */ 318 | int omemo_delete_cb(const char *fpath, const struct stat *sb, int typeflag, 319 | struct FTW *ftwbuf) 320 | { 321 | if (remove(fpath)) 322 | return -1; 323 | else 324 | return 0; 325 | } 326 | 327 | /** 328 | * @brief Deletes a directory recursively 329 | * 330 | * @param path The path to delete 331 | * 332 | * @retval 0 The directory was removed successfully 333 | * @retval -1 An error occurred while removing the directory 334 | */ 335 | int omemo_rm_dir(const char *path) 336 | { 337 | return nftw(path, omemo_delete_cb, 64, FTW_DEPTH | FTW_PHYS); 338 | } 339 | 340 | 341 | int omemo_store_device_list(const signal_protocol_address *user, 342 | struct device_list *list) 343 | { 344 | char path[PATH_MAX]; 345 | FILE *devices; 346 | int retval; 347 | size_t devices_written = 0; 348 | struct device_list *cur; 349 | 350 | retval = omemo_get_dir(user, &(list->device->address), dev_file_name, 351 | path, sizeof(path)); 352 | 353 | puts(path); 354 | if (retval < 0) { 355 | return -1; 356 | } 357 | 358 | if (retval) { 359 | if (omemo_mk_dir(path) != 0) { 360 | return -1; 361 | } 362 | } 363 | 364 | devices = fopen(path, "w+"); 365 | if (!devices) { 366 | return -1; 367 | } 368 | 369 | if (fputs("A:", devices) == EOF) { 370 | return -1; 371 | } 372 | 373 | for (cur = list; cur != NULL; cur = cur->next) { 374 | if (cur->device->status == ACTIVE) { 375 | if (devices_written) { 376 | fputs(",", devices); 377 | } 378 | fprintf(devices, "%d", cur->device->address.device_id); 379 | devices_written++; 380 | } 381 | } 382 | 383 | if (fputs("\nI:", devices) == EOF) { 384 | return -1; 385 | } 386 | 387 | devices_written = 0; 388 | for (cur = list; cur != NULL; cur = cur->next) { 389 | if (cur->device->status == INACTIVE) { 390 | if (devices_written) { 391 | fputs(",", devices); 392 | } 393 | fprintf(devices, "%d", cur->device->address.device_id); 394 | devices_written++; 395 | } 396 | } 397 | 398 | fclose(devices); 399 | 400 | return 0; 401 | 402 | } 403 | 404 | int omemo_is_local_user_existent(const signal_protocol_address *address) 405 | { 406 | int retval; 407 | char buffer[PATH_MAX]; 408 | 409 | if (!address) { 410 | errno = EINVAL; 411 | return -1; 412 | } 413 | 414 | retval = omemo_get_dir(address, NULL, NULL, buffer, sizeof(buffer)); 415 | if (retval < 0) { 416 | return -1; 417 | } 418 | 419 | return !retval; 420 | } 421 | 422 | 423 | int omemo_load_session(signal_buffer **record, signal_buffer **user_record, 424 | const signal_protocol_address *address, void *user_data) 425 | { 426 | if (!address || !user_data) { 427 | return SG_ERR_INVAL; 428 | } 429 | 430 | int retval; 431 | char path_buf[PATH_MAX]; 432 | FILE *se_file = NULL; 433 | uint8_t *se_data; 434 | struct stat st = {0}; 435 | struct omemo_context *context = user_data; 436 | 437 | 438 | retval = omemo_get_dir(&context->own_address, address, se_file_name, path_buf, 439 | sizeof(path_buf)); 440 | 441 | if (retval <= 0) { 442 | return (retval == 0) ? retval : SG_ERR_UNKNOWN; 443 | } 444 | 445 | se_file = fopen(path_buf, "r"); 446 | if (!se_file) { 447 | return SG_ERR_UNKNOWN; 448 | } 449 | 450 | /* Determine size of file */ 451 | if (fstat(fileno(se_file), &st)) { 452 | fclose(se_file); 453 | return SG_ERR_UNKNOWN; 454 | } 455 | 456 | se_data = malloc(st.st_size); 457 | if (!se_data) { 458 | fclose(se_file); 459 | return SG_ERR_NOMEM; 460 | } 461 | 462 | if (fread(se_data, 1, st.st_size, se_file) != st.st_size) { 463 | goto err_cleanup; 464 | } 465 | 466 | *record = signal_buffer_create(se_data, st.st_size); 467 | if (!(*record)) { 468 | goto err_cleanup; 469 | } 470 | 471 | fclose(se_file); 472 | free(se_data); 473 | return 1; 474 | 475 | err_cleanup: 476 | fclose(se_file); 477 | free(se_data); 478 | return SG_ERR_UNKNOWN; 479 | } 480 | 481 | 482 | int omemo_get_sub_device_sessions(signal_int_list **sessions, const char *name, 483 | size_t name_len, void *user_data) 484 | { 485 | char buffer[PATH_MAX]; 486 | DIR *dir; 487 | int size, retval; 488 | struct dirent *folder; 489 | struct signal_protocol_address user_addr = { 490 | .name = name, 491 | .name_len = name_len, 492 | .device_id = 0 493 | }; 494 | struct omemo_context *context = user_data; 495 | 496 | size = 0; 497 | 498 | if (!name || !user_data) 499 | return SG_ERR_INVAL; 500 | 501 | memset(buffer, 0x0, sizeof(buffer)); 502 | 503 | retval = omemo_get_dir(&context->own_address, &user_addr, NULL, buffer, sizeof(buffer)); 504 | if (retval < 0) { 505 | return SG_ERR_UNKNOWN; 506 | } else if (!retval) { 507 | return 0; 508 | } 509 | 510 | dir = opendir(buffer); 511 | if (!dir) 512 | return SG_ERR_UNKNOWN; 513 | 514 | *sessions = signal_int_list_alloc(); 515 | if (!*sessions) 516 | return SG_ERR_UNKNOWN; 517 | 518 | while ((folder = readdir(dir))) { 519 | int device_id = atoi(folder->d_name); 520 | signal_int_list_push_back(*sessions, device_id); 521 | ++size; 522 | } 523 | 524 | closedir(dir); 525 | return size; 526 | } 527 | 528 | int omemo_store_session(const signal_protocol_address *address, uint8_t *record, 529 | size_t record_len, uint8_t *user_record, size_t user_record_len, 530 | void *user_data) 531 | { 532 | char buffer[PATH_MAX]; 533 | FILE *se_file; 534 | int retval; 535 | size_t bytes_written; 536 | struct omemo_context *context = user_data; 537 | 538 | if (!address || !record || !user_data) 539 | return SG_ERR_INVAL; 540 | 541 | memset(buffer, 0x0, sizeof(buffer)); 542 | 543 | retval = omemo_get_dir(&context->own_address, address, se_file_name, buffer, 544 | sizeof(buffer)); 545 | if (retval < 0) 546 | return SG_ERR_UNKNOWN; 547 | 548 | se_file = fopen(buffer, "w"); 549 | if (!se_file) 550 | return SG_ERR_UNKNOWN; 551 | 552 | bytes_written = fwrite(record, 1, record_len, se_file); 553 | if (bytes_written < record_len) { 554 | fclose(se_file); 555 | return SG_ERR_UNKNOWN; 556 | } 557 | 558 | fclose(se_file); 559 | return 0; 560 | } 561 | 562 | int omemo_contains_session(const signal_protocol_address *address, 563 | void *user_data) 564 | { 565 | char buffer[PATH_MAX]; 566 | int retval; 567 | struct omemo_context *context = user_data; 568 | 569 | if (!address || !user_data) 570 | return SG_ERR_INVAL; 571 | 572 | retval = omemo_get_dir(&context->own_address, address, NULL, buffer, sizeof(buffer)); 573 | 574 | return (retval == 0) ? 1 : 0; 575 | } 576 | 577 | int omemo_delete_session(const signal_protocol_address *address, 578 | void *user_data) 579 | { 580 | char buffer[PATH_MAX]; 581 | int retval; 582 | struct omemo_context *context = user_data; 583 | 584 | if (!address || !user_data) 585 | return SG_ERR_INVAL; 586 | 587 | memset(buffer, 0x0, sizeof(buffer)); 588 | 589 | retval = omemo_get_dir(&context->own_address, address, NULL, buffer, sizeof(buffer)); 590 | if (retval < 0) 591 | return SG_ERR_UNKNOWN; 592 | else if (retval) 593 | return 0; 594 | 595 | return omemo_rm_dir(buffer); 596 | } 597 | 598 | int omemo_delete_all_sessions(const char *name, size_t name_len, 599 | void *user_data) 600 | { 601 | char buffer[PATH_MAX]; 602 | DIR *dir; 603 | int retval, se_deleted; 604 | struct dirent *folder; 605 | signal_protocol_address user_addr = { 606 | .name = name, 607 | .name_len = name_len, 608 | .device_id = 0 609 | }; 610 | struct omemo_context *context = user_data; 611 | 612 | se_deleted = 0; 613 | 614 | if (!name || !user_data) { 615 | return SG_ERR_INVAL; 616 | } 617 | 618 | memset(buffer, 0x0, sizeof(buffer)); 619 | 620 | retval = omemo_get_dir(&context->own_address, &user_addr, NULL, buffer, sizeof(buffer)); 621 | if (retval < 0) 622 | return SG_ERR_UNKNOWN; 623 | else if (retval) 624 | return 0; 625 | 626 | dir = opendir(buffer); 627 | if (!dir) 628 | return SG_ERR_UNKNOWN; 629 | 630 | while ((folder = readdir(dir))) 631 | ++se_deleted; 632 | 633 | retval = omemo_rm_dir(buffer); 634 | if (retval < 0) 635 | return retval; 636 | else 637 | return se_deleted; 638 | } 639 | 640 | void omemo_session_store_destroy(void *user_data) 641 | { } 642 | 643 | int omemo_load_pre_key(signal_buffer **record, uint32_t pre_key_id, 644 | void *user_data) 645 | { 646 | char path_buf[PATH_MAX]; 647 | FILE *pk_file; 648 | int retval; 649 | struct stat st; 650 | uint8_t *buffer; 651 | struct omemo_context *context = user_data; 652 | 653 | if (!user_data) { 654 | return SG_ERR_INVAL; 655 | } 656 | 657 | memset(path_buf, 0x0, sizeof(path_buf)); 658 | memset(&st, 0x0, sizeof(struct stat)); 659 | 660 | retval = omemo_get_pre_key_store(&context->own_address, path_buf, sizeof(path_buf)); 661 | if (retval) 662 | return SG_ERR_INVALID_KEY_ID; 663 | 664 | pk_file = fopen(path_buf, "r"); 665 | if (!pk_file) 666 | return SG_ERR_INVALID_KEY_ID; 667 | 668 | /* Determine file size */ 669 | if (fstat(fileno(pk_file), &st) < 0) { 670 | fclose(pk_file); 671 | return SG_ERR_INVALID_KEY_ID; 672 | } 673 | 674 | buffer = malloc(st.st_size); 675 | if (!buffer) { 676 | fclose(pk_file); 677 | return SG_ERR_INVALID_KEY_ID; 678 | } 679 | 680 | if (fread(buffer, 1, st.st_size, pk_file) < st.st_size) 681 | goto err_cleanup; 682 | 683 | *record = signal_buffer_create(buffer, st.st_size); 684 | if (!(*record)) 685 | goto err_cleanup; 686 | 687 | fclose(pk_file); 688 | free(buffer); 689 | return SG_SUCCESS; 690 | 691 | err_cleanup: 692 | 693 | fclose(pk_file); 694 | free(buffer); 695 | return SG_ERR_INVALID_KEY_ID; 696 | } 697 | 698 | int omemo_store_pre_key(uint32_t pre_key_id, uint8_t *record, size_t record_len, 699 | void *user_data) 700 | { 701 | char buffer[PATH_MAX]; 702 | FILE *pk_file; 703 | int retval; 704 | size_t bytes_free, bytes_written; 705 | struct omemo_context *context = user_data; 706 | 707 | if (!record || !user_data) 708 | return SG_ERR_INVAL; 709 | 710 | memset(buffer, 0x0, sizeof(buffer)); 711 | 712 | retval = omemo_get_pre_key_store(&context->own_address, buffer, sizeof(buffer)); 713 | if (retval < 0) 714 | return SG_ERR_UNKNOWN; 715 | else if (retval) { 716 | retval = omemo_mk_dir(buffer); 717 | if (retval < 0) 718 | return SG_ERR_UNKNOWN; 719 | } 720 | 721 | bytes_free = sizeof(buffer) - strlen(buffer); 722 | if (snprintf(buffer, bytes_free, "%d", pre_key_id) >= bytes_free) 723 | return SG_ERR_UNKNOWN; 724 | 725 | pk_file = fopen(buffer, "w"); 726 | if (!pk_file) 727 | return SG_ERR_UNKNOWN; 728 | 729 | bytes_written = fwrite(record, 1, record_len, pk_file); 730 | if (bytes_written < record_len) { 731 | fclose(pk_file); 732 | return SG_ERR_UNKNOWN; 733 | } 734 | 735 | fclose(pk_file); 736 | return 0; 737 | } 738 | 739 | int omemo_contains_pre_key(uint32_t pre_key_id, void *user_data) 740 | { 741 | char buffer[PATH_MAX]; 742 | int retval; 743 | size_t bytes_free; 744 | struct stat st = {0}; 745 | struct omemo_context *context = user_data; 746 | 747 | if (!user_data) { 748 | return SG_ERR_INVAL; 749 | } 750 | 751 | memset(buffer, 0x0, sizeof(buffer)); 752 | 753 | retval = omemo_get_pre_key_store(&context->own_address, buffer, sizeof(buffer)); 754 | if (retval < 0) 755 | return SG_ERR_UNKNOWN; 756 | else if (retval) 757 | return 0; 758 | 759 | bytes_free = sizeof(buffer) - strlen(buffer); 760 | if (snprintf(buffer, bytes_free, "%d", pre_key_id) >= bytes_free) 761 | return SG_ERR_UNKNOWN; 762 | 763 | return (stat(buffer, &st) < 0) ? 0 : 1; 764 | } 765 | 766 | int omemo_remove_pre_key(uint32_t pre_key_id, void *user_data) 767 | { 768 | char buffer[PATH_MAX]; 769 | int retval; 770 | size_t bytes_free; 771 | struct stat st = {0}; 772 | struct omemo_context *context = user_data; 773 | 774 | if (!user_data) { 775 | return SG_ERR_INVAL; 776 | } 777 | 778 | memset(buffer, 0x0, sizeof(buffer)); 779 | 780 | retval = omemo_get_pre_key_store(&context->own_address, buffer, sizeof(buffer)); 781 | if (retval) 782 | return SG_ERR_UNKNOWN; 783 | 784 | bytes_free = sizeof(buffer) - strlen(buffer); 785 | if (snprintf(buffer, bytes_free, "%d", pre_key_id) >= bytes_free) 786 | return SG_ERR_UNKNOWN; 787 | 788 | if (stat(buffer, &st) < 0) 789 | return SG_ERR_UNKNOWN; 790 | 791 | retval = remove(buffer); 792 | if (retval < 0) 793 | return SG_ERR_UNKNOWN; 794 | 795 | return 0; 796 | } 797 | 798 | void omemo_pre_key_store_destroy(void *user_data) 799 | { } 800 | 801 | 802 | int omemo_load_signed_pre_key(signal_buffer **record, 803 | uint32_t signed_pre_key_id, void *user_data) 804 | { 805 | char path_buf[PATH_MAX]; 806 | FILE *pk_file; 807 | int retval; 808 | struct stat st; 809 | uint8_t *buffer; 810 | struct omemo_context *context = user_data; 811 | 812 | if (!user_data) { 813 | return SG_ERR_INVAL; 814 | } 815 | 816 | memset(path_buf, 0x0, sizeof(path_buf)); 817 | memset(&st, 0x0, sizeof(struct stat)); 818 | 819 | retval = omemo_get_signed_pre_key_store(&context->own_address, path_buf, 820 | sizeof(path_buf)); 821 | if (retval) 822 | return SG_ERR_INVALID_KEY_ID; 823 | 824 | pk_file = fopen(path_buf, "r"); 825 | if (!pk_file) 826 | return SG_ERR_INVALID_KEY_ID; 827 | 828 | /* Determine file size */ 829 | if (fstat(fileno(pk_file), &st) < 0) { 830 | fclose(pk_file); 831 | return SG_ERR_INVALID_KEY_ID; 832 | } 833 | 834 | buffer = malloc(st.st_size); 835 | if (!buffer) { 836 | fclose(pk_file); 837 | return SG_ERR_INVALID_KEY_ID; 838 | } 839 | 840 | if (fread(buffer, 1, st.st_size, pk_file) < st.st_size) 841 | goto err_cleanup; 842 | 843 | *record = signal_buffer_create(buffer, st.st_size); 844 | if (!(*record)) 845 | goto err_cleanup; 846 | 847 | fclose(pk_file); 848 | free(buffer); 849 | return SG_SUCCESS; 850 | 851 | err_cleanup: 852 | 853 | fclose(pk_file); 854 | free(buffer); 855 | return SG_ERR_INVALID_KEY_ID; 856 | } 857 | 858 | int omemo_store_signed_pre_key(uint32_t signed_pre_key_id, uint8_t *record, 859 | size_t record_len, void *user_data) 860 | { 861 | char buffer[PATH_MAX]; 862 | FILE *pk_file; 863 | int retval; 864 | size_t bytes_free, bytes_written; 865 | struct omemo_context *context = user_data; 866 | 867 | if (!record || !user_data) 868 | return SG_ERR_INVAL; 869 | 870 | memset(buffer, 0x0, sizeof(buffer)); 871 | 872 | retval = omemo_get_signed_pre_key_store(&context->own_address, buffer, sizeof(buffer)); 873 | if (retval < 0) 874 | return SG_ERR_UNKNOWN; 875 | else if (retval) { 876 | retval = omemo_mk_dir(buffer); 877 | if (retval < 0) 878 | return SG_ERR_UNKNOWN; 879 | } 880 | 881 | bytes_free = sizeof(buffer) - strlen(buffer); 882 | if (snprintf(buffer, bytes_free, "%d", signed_pre_key_id) 883 | >= bytes_free) 884 | return SG_ERR_UNKNOWN; 885 | 886 | pk_file = fopen(buffer, "w"); 887 | if (!pk_file) 888 | return SG_ERR_UNKNOWN; 889 | 890 | bytes_written = fwrite(record, 1, record_len, pk_file); 891 | if (bytes_written < record_len) { 892 | fclose(pk_file); 893 | return SG_ERR_UNKNOWN; 894 | } 895 | 896 | fclose(pk_file); 897 | return 0; 898 | } 899 | 900 | int omemo_contains_signed_pre_key(uint32_t signed_pre_key_id, void *user_data) 901 | { 902 | char buffer[PATH_MAX]; 903 | int retval; 904 | size_t bytes_free; 905 | struct stat st = {0}; 906 | struct omemo_context *context = user_data; 907 | 908 | if (!user_data) { 909 | return SG_ERR_INVAL; 910 | } 911 | 912 | memset(buffer, 0x0, sizeof(buffer)); 913 | 914 | retval = omemo_get_signed_pre_key_store(&context->own_address, buffer, sizeof(buffer)); 915 | if (retval < 0) 916 | return SG_ERR_UNKNOWN; 917 | else if (retval) 918 | return 0; 919 | 920 | bytes_free = sizeof(buffer) - strlen(buffer); 921 | if (snprintf(buffer, bytes_free, "%d", signed_pre_key_id) 922 | >= bytes_free) 923 | return SG_ERR_UNKNOWN; 924 | 925 | return (stat(buffer, &st) < 0) ? 0 : 1; 926 | } 927 | 928 | int omemo_remove_signed_pre_key(uint32_t signed_pre_key_id, void *user_data) 929 | { 930 | char buffer[PATH_MAX]; 931 | int retval; 932 | size_t bytes_free; 933 | struct stat st = {0}; 934 | struct omemo_context *context = user_data; 935 | 936 | if (!user_data) { 937 | return SG_ERR_INVAL; 938 | } 939 | 940 | memset(buffer, 0x0, sizeof(buffer)); 941 | 942 | retval = omemo_get_signed_pre_key_store(&context->own_address, buffer, sizeof(buffer)); 943 | if (retval) 944 | return SG_ERR_UNKNOWN; 945 | 946 | bytes_free = sizeof(buffer) - strlen(buffer); 947 | if (snprintf(buffer, bytes_free, "%d", signed_pre_key_id) 948 | >= bytes_free) 949 | return SG_ERR_UNKNOWN; 950 | 951 | if (stat(buffer, &st) < 0) 952 | return SG_ERR_UNKNOWN; 953 | 954 | retval = remove(buffer); 955 | if (retval < 0) 956 | return SG_ERR_UNKNOWN; 957 | 958 | return 0; 959 | } 960 | 961 | void omemo_signed_pre_key_store_destroy(void *user_data) 962 | { } 963 | 964 | 965 | int omemo_get_identity_key_pair(signal_buffer **public_data, signal_buffer **private_data, 966 | void *user_data) 967 | { 968 | char buffer[PATH_MAX]; 969 | FILE *priv_key_file; 970 | FILE *pub_key_file; 971 | int retval; 972 | size_t path_len; 973 | size_t bytes_free; 974 | uint8_t *priv_key_buffer; 975 | uint8_t *pub_key_buffer; 976 | struct stat st = {0}; 977 | struct omemo_context *context = user_data; 978 | 979 | if (!user_data) { 980 | return SG_ERR_INVAL; 981 | } 982 | 983 | memset(buffer, 0x0, sizeof(buffer)); 984 | 985 | retval = omemo_get_identity_key_store(&context->own_address, buffer, sizeof(buffer)); 986 | if (retval) 987 | return SG_ERR_UNKNOWN; 988 | 989 | path_len = strlen(buffer); 990 | bytes_free = sizeof(buffer) - path_len; 991 | 992 | /* Load private key */ 993 | if (snprintf(buffer + path_len, bytes_free, "%s", id_priv_key_file_name) 994 | >= bytes_free) { 995 | return SG_ERR_UNKNOWN; 996 | } 997 | 998 | priv_key_file = fopen(buffer, "r"); 999 | if (!priv_key_file) { 1000 | return SG_ERR_INVALID_KEY_ID; 1001 | } 1002 | 1003 | if (fstat(fileno(priv_key_file), &st) < 0) { 1004 | fclose(priv_key_file); 1005 | return SG_ERR_INVALID_KEY_ID; 1006 | } 1007 | 1008 | priv_key_buffer = malloc(st.st_size); 1009 | if (!priv_key_buffer) { 1010 | fclose(priv_key_file); 1011 | return SG_ERR_UNKNOWN; 1012 | } 1013 | 1014 | if (fread(priv_key_buffer, 1, st.st_size, priv_key_file) < st.st_size) { 1015 | fclose(priv_key_file); 1016 | free(priv_key_buffer); 1017 | return SG_ERR_UNKNOWN; 1018 | } 1019 | 1020 | *private_data = signal_buffer_create(priv_key_buffer, st.st_size); 1021 | if (!(*private_data)) { 1022 | fclose(priv_key_file); 1023 | free(priv_key_buffer); 1024 | return SG_ERR_UNKNOWN; 1025 | } 1026 | 1027 | fclose(priv_key_file); 1028 | 1029 | /* Load public key */ 1030 | if (snprintf(buffer + path_len, bytes_free, "%s", id_pub_key_file_name) 1031 | >= bytes_free) { 1032 | return SG_ERR_UNKNOWN; 1033 | } 1034 | 1035 | pub_key_file = fopen(buffer, "r"); 1036 | if (!pub_key_file) { 1037 | return SG_ERR_INVALID_KEY_ID; 1038 | } 1039 | 1040 | if (fstat(fileno(pub_key_file), &st) < 0) { 1041 | fclose(pub_key_file); 1042 | return SG_ERR_INVALID_KEY_ID; 1043 | } 1044 | 1045 | pub_key_buffer = malloc(st.st_size); 1046 | if (!pub_key_buffer) { 1047 | fclose(pub_key_file); 1048 | return SG_ERR_UNKNOWN; 1049 | } 1050 | 1051 | if (fread(pub_key_buffer, 1, st.st_size, pub_key_file) < st.st_size) { 1052 | fclose(pub_key_file); 1053 | free(pub_key_buffer); 1054 | return SG_ERR_UNKNOWN; 1055 | } 1056 | 1057 | *public_data = signal_buffer_create(pub_key_buffer, st.st_size); 1058 | if (!(*public_data)) { 1059 | fclose(pub_key_file); 1060 | free(pub_key_buffer); 1061 | return SG_ERR_UNKNOWN; 1062 | } 1063 | 1064 | fclose(pub_key_file); 1065 | 1066 | return SG_SUCCESS; 1067 | } 1068 | 1069 | int omemo_get_local_registration_id(void *user_data, uint32_t *registration_id) 1070 | { 1071 | if (!registration_id) { 1072 | return SG_ERR_INVAL; 1073 | } 1074 | 1075 | /* default value for OMEMO, only important for signal */ 1076 | *registration_id = 0; 1077 | 1078 | return SG_SUCCESS; 1079 | } 1080 | 1081 | int omemo_save_identity(const signal_protocol_address *address, uint8_t *key_data, 1082 | size_t key_len, void *user_data) 1083 | { 1084 | /* Not needed as OMEMO handles device management */ 1085 | 1086 | return SG_SUCCESS; 1087 | } 1088 | 1089 | int omemo_is_trusted_identity(const signal_protocol_address *address, uint8_t *key_data, 1090 | size_t key_len, void *user_data) 1091 | { 1092 | /* Trust management is done by OMEMO */ 1093 | return 1; 1094 | } 1095 | 1096 | void omemo_identity_key_store_destroy(void *user_data) 1097 | { 1098 | } 1099 | -------------------------------------------------------------------------------- /store/omemo_store.h: -------------------------------------------------------------------------------- 1 | #ifndef PROF_OMEMO_STORE_H 2 | #define PROF_OMEMO_STORE_H 3 | 4 | #include 5 | 6 | #ifdef __cplusplus 7 | extern "C" { 8 | #endif 9 | 10 | struct omemo_store_context { 11 | signal_protocol_session_store session_store; 12 | signal_protocol_pre_key_store pre_key_store; 13 | signal_protocol_signed_pre_key_store signed_pre_key_store; 14 | signal_protocol_identity_key_store identity_key_store; 15 | }; 16 | 17 | struct omemo_context; 18 | struct device_list; 19 | 20 | struct omemo_store_context *omemo_store_context_create(struct omemo_context *context); 21 | 22 | /** 23 | * @brief Stores a device list persistently 24 | * 25 | * @param user Local user 26 | * @param list Device list to store 27 | * 28 | * @retval 0 The device list was stored successfully 29 | * @retval -1 An error occurred and `errno` was set to indicate the cause 30 | */ 31 | int omemo_store_device_list(const signal_protocol_address *user, 32 | struct device_list *list); 33 | 34 | int omemo_is_local_user_existent(const signal_protocol_address *address); 35 | 36 | /* From Libsignal for signal_protocol_session_store */ 37 | int omemo_load_session(signal_buffer **record, signal_buffer **user_record, 38 | const signal_protocol_address *address, void *user_data); 39 | 40 | int omemo_get_sub_device_sessions(signal_int_list **sessions, 41 | const char *name, size_t name_len, 42 | void *user_data); 43 | 44 | int omemo_store_session(const signal_protocol_address *address, uint8_t *record, 45 | size_t record_len, uint8_t *user_record, size_t user_record_len, 46 | void *user_data); 47 | 48 | int omemo_contains_session(const signal_protocol_address *address, 49 | void *user_data); 50 | 51 | int omemo_delete_session(const signal_protocol_address *address, 52 | void *user_data); 53 | 54 | int omemo_delete_all_sessions(const char *name, size_t name_len, 55 | void *user_data); 56 | 57 | void omemo_session_store_destroy(void *user_data); 58 | 59 | 60 | /* From Libsignal for signal_protocol_pre_key_store */ 61 | int omemo_load_pre_key(signal_buffer **record, uint32_t pre_key_id, 62 | void *user_data); 63 | 64 | int omemo_store_pre_key(uint32_t pre_key_id, uint8_t *record, size_t record_len, 65 | void *user_data); 66 | 67 | int omemo_contains_pre_key(uint32_t pre_key_id, void *user_data); 68 | 69 | int omemo_remove_pre_key(uint32_t pre_key_id, void *user_data); 70 | 71 | void omemo_pre_key_store_destroy(void *user_data); 72 | 73 | 74 | /* From Libsignal for signal_protocol_signed_pre_key_store */ 75 | int omemo_load_signed_pre_key(signal_buffer **record, uint32_t pre_key_id, 76 | void *user_data); 77 | 78 | int omemo_store_signed_pre_key(uint32_t pre_key_id, uint8_t *record, 79 | size_t record_len, void *user_data); 80 | 81 | int omemo_contains_signed_pre_key(uint32_t pre_key_id, void *user_data); 82 | 83 | int omemo_remove_signed_pre_key(uint32_t pre_key_id, void *user_data); 84 | 85 | void omemo_signed_pre_key_store_destroy(void *user_data); 86 | 87 | 88 | /* From Libsignal for signal_protocol_idendity_key_store */ 89 | int omemo_get_identity_key_pair(signal_buffer **public_data, signal_buffer **private_data, 90 | void *user_data); 91 | 92 | int omemo_get_local_registration_id(void *user_data, uint32_t *registration_id); 93 | 94 | int omemo_save_identity(const signal_protocol_address *address, uint8_t *key_data, 95 | size_t key_len, void *user_data); 96 | 97 | int omemo_is_trusted_identity(const signal_protocol_address *address, uint8_t *key_data, 98 | size_t key_len, void *user_data); 99 | 100 | void omemo_identity_key_store_destroy(void *user_data); 101 | 102 | #ifdef __cplusplus 103 | } 104 | #endif 105 | 106 | #endif /* PROF_OMEMO_STORE_H */ 107 | -------------------------------------------------------------------------------- /store/targets.cmake: -------------------------------------------------------------------------------- 1 | set ( 2 | STORE_SRC 3 | store/omemo_file_store.c 4 | store/omemo_store.h 5 | ) 6 | -------------------------------------------------------------------------------- /structs/device_list.c: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | #include 4 | #include 5 | 6 | #include "device_list.h" 7 | #include "omemo_device.h" 8 | 9 | 10 | 11 | int omemo_device_list_serialize_xml(xmlNodePtr *root, struct device_list **list) 12 | { 13 | struct device_list *cur; 14 | xmlNodePtr list_root = NULL; 15 | xmlNsPtr ns_list = NULL; 16 | 17 | 18 | list_root = xmlNewNode(ns_list, BAD_CAST "list"); 19 | ns_list = xmlNewNs(list_root, BAD_CAST OMEMO_DEVICE_LIST_XML_NS, NULL); 20 | if (!ns_list) { 21 | errno = EINVAL; 22 | return -1; 23 | } 24 | 25 | xmlAddChild(*root, list_root); 26 | 27 | for (cur = *list; cur != NULL; cur = cur->next) { 28 | xmlNodePtr device = xmlNewChild(list_root, NULL, BAD_CAST "device", NULL); 29 | char id_str[32]; 30 | snprintf(id_str, sizeof(id_str), "%d", cur->device->address.device_id); 31 | xmlSetProp(device, BAD_CAST "id", BAD_CAST id_str); 32 | } 33 | 34 | return 0; 35 | } 36 | 37 | int omemo_device_list_deserialize_xml(struct device_list **head, xmlNodePtr node, 38 | const char *jid) 39 | { 40 | return 0; 41 | } 42 | 43 | 44 | int omemo_device_list_add(struct device_list **head, 45 | struct omemo_device *device) 46 | { 47 | struct device_list *new_device; 48 | 49 | if (!head || !device) { 50 | errno = EINVAL; 51 | return -1; 52 | } 53 | 54 | /* Check if new device is already in list */ 55 | if (omemo_device_list_contains(head, device)) { 56 | return 0; 57 | } 58 | 59 | 60 | new_device = malloc(sizeof(struct device_list)); 61 | 62 | if (!new_device) { 63 | errno = ENOMEM; 64 | return -1; 65 | } 66 | 67 | new_device->next = *head; 68 | new_device->device = device; 69 | 70 | *head = new_device; 71 | 72 | return 1; 73 | } 74 | 75 | int omemo_device_list_add_inplace(struct device_list **head, 76 | struct device_list *pos, 77 | struct omemo_device *device) 78 | { 79 | struct device_list *new_device, *cur; 80 | 81 | if (!head || !pos || !device) { 82 | errno = EINVAL; 83 | return -1; 84 | } 85 | 86 | if (!omemo_device_list_contains(head, pos->device)) { 87 | errno = EINVAL; 88 | return -1; 89 | } 90 | 91 | if (omemo_device_list_contains(head, device)) { 92 | return 0; 93 | } 94 | 95 | 96 | new_device = malloc(sizeof(struct device_list)); 97 | 98 | if (!new_device) { 99 | errno = ENOMEM; 100 | return -1; 101 | } 102 | 103 | new_device->next = pos; 104 | new_device->device = device; 105 | 106 | if (*head == pos) { 107 | *head = new_device; 108 | return 1; 109 | } 110 | 111 | for (cur = *head; cur->next != pos; cur = cur->next) { } 112 | 113 | cur->next = new_device; 114 | 115 | return 1; 116 | } 117 | 118 | 119 | int omemo_device_list_contains(struct device_list **head, 120 | struct omemo_device *device) 121 | { 122 | struct device_list *cur; 123 | 124 | if (!head || !device) { 125 | errno = EINVAL; 126 | return -1; 127 | } 128 | 129 | for (cur = *head; cur != NULL; cur = cur->next) { 130 | if (cur->device == device) { 131 | return 1; 132 | } 133 | } 134 | 135 | return 0; 136 | } 137 | 138 | 139 | int omemo_device_list_contains_id(struct device_list **head, 140 | int32_t id) 141 | { 142 | struct device_list *cur; 143 | 144 | if (!head || !id) { 145 | errno = EINVAL; 146 | return -1; 147 | } 148 | 149 | for (cur = *head; cur != NULL; cur = cur->next) { 150 | if (cur->device->address.device_id == id) { 151 | return 1; 152 | } 153 | } 154 | 155 | return 0; 156 | } 157 | 158 | 159 | int omemo_device_list_remove(struct device_list **head, 160 | struct omemo_device *device) 161 | { 162 | struct device_list *cur; 163 | 164 | if (!head || !device) { 165 | errno = EINVAL; 166 | return -1; 167 | } 168 | 169 | if ((*head)->device == device) { 170 | struct device_list *next = (*head)->next; 171 | free(*head); 172 | *head = next; 173 | return 0; 174 | } 175 | 176 | for (cur = *head; cur->next != NULL; cur = cur->next) { 177 | if (cur->next->device == device) { 178 | struct device_list *tmp = cur->next; 179 | cur->next = cur->next->next; 180 | free(tmp); 181 | return 0; 182 | } 183 | } 184 | 185 | errno = EINVAL; 186 | 187 | return -1; 188 | } 189 | 190 | 191 | uint32_t omemo_device_list_size(struct device_list **head) 192 | { 193 | if (!head) { 194 | return 0; 195 | } 196 | 197 | uint32_t size = 0; 198 | struct device_list *cur; 199 | 200 | for (cur = *head; cur != NULL; ++size, cur = cur->next) 201 | { } 202 | 203 | return size; 204 | } 205 | 206 | int omemo_device_list_free_device(struct device_list **head, 207 | struct omemo_device *device) 208 | { 209 | int retval; 210 | retval = omemo_device_list_remove(head, device); 211 | 212 | if (retval < 0) { 213 | errno = EINVAL; 214 | return -1; 215 | } 216 | 217 | omemo_device_free(device); 218 | 219 | return 0; 220 | } 221 | 222 | void omemo_device_list_free(struct device_list **head) 223 | { 224 | if (!head || !(*head)) { 225 | return; 226 | } 227 | 228 | while ((*head) != NULL) { 229 | struct device_list *tmp; 230 | omemo_device_free((*head)->device); 231 | 232 | tmp = (*head); 233 | *head = (*head)->next; 234 | free(tmp); 235 | } 236 | 237 | *head = NULL; 238 | } 239 | -------------------------------------------------------------------------------- /structs/device_list.h: -------------------------------------------------------------------------------- 1 | #ifndef PROF_OMEMO_DEVICE_LIST_H 2 | #define PROF_OMEMO_DEVICE_LIST_H 3 | 4 | #include 5 | #include 6 | 7 | #ifdef __cplusplus 8 | extern "C" { 9 | #endif 10 | 11 | struct omemo_device; 12 | 13 | struct device_list { 14 | struct device_list *next; 15 | struct omemo_device *device; 16 | }; 17 | 18 | 19 | /** 20 | * @brief Creates a XML device list 21 | * 22 | * Memory for the buffer has to be freed manually. 23 | * 24 | * @param root XML root node where output should begin 25 | * @param head Device list to serialize 26 | * 27 | * @retval 0 Device list successfully serialized 28 | * @retval -1 An error occurred and `errno` is set to indicate the cause 29 | */ 30 | int omemo_device_list_serialize_xml(xmlNodePtr *root, struct device_list **head); 31 | 32 | 33 | /** 34 | * @brief Creates a device list from XML input 35 | * 36 | * @param head Device list to create 37 | * @param node `xmlNodePtr` to start parsing from 38 | * @param jid JID of device owner 39 | * 40 | * @return Number of devices found or `-1` if an error occurred which will 41 | * set `errno` accordingly 42 | */ 43 | int omemo_device_list_deserialize_xml(struct device_list **head, xmlNodePtr node, 44 | const char *jid); 45 | 46 | 47 | /** 48 | * @brief Adds an OMEMO device to the begin of the device list. 49 | * 50 | * The list will free the `omeme_device` when it is not needed anymore. 51 | * Avoid freeing it manually or remove it from the list first. 52 | * 53 | * @param head Head of the list, the device shall be added to 54 | * @param device OMEMO device to add to the list 55 | * 56 | * @retval 1 The device was added to the list successfully 57 | * @retval 0 No errors occured but the device or an device with the same ID 58 | * is already in list. 59 | * @retval -1 An error occurred while adding the device to the list. `errno` 60 | * is set to indicated the cause. 61 | */ 62 | int omemo_device_list_add(struct device_list **head, 63 | struct omemo_device *device); 64 | 65 | /** 66 | * @brief Adds an OMEMO device at the current position of the device list. 67 | * 68 | * The list will free the `omeme_device` when it is not needed anymore. 69 | * Avoid freeing it manually or remove it from the list first. 70 | * 71 | * @param head Head of the list to insert to 72 | * @param pos Position where the OMEMO device shall be inserted 73 | * @param device OMEMO device to add 74 | * 75 | * @retval 1 The device was added to the list successfully 76 | * @retval 0 No errors occured but the device or an device with the same ID 77 | * is already in list. 78 | * @retval -1 An error occurred while adding the device to the list. `errno` 79 | * is set to indicated the cause. 80 | */ 81 | int omemo_device_list_add_inplace(struct device_list **head, 82 | struct device_list *pos, 83 | struct omemo_device *device); 84 | 85 | /** 86 | * @brief Checks if the list contains a device. 87 | * 88 | * @param head Head of the list to look in 89 | * @param device device to look for. 90 | * 91 | * @retval 1 The list contains the device 92 | * @retval 0 The list does not contain the device 93 | * @retval -1 An error occurred and `errno` is set to indicate the cause 94 | */ 95 | int omemo_device_list_contains(struct device_list **head, 96 | struct omemo_device *device); 97 | 98 | /** 99 | * @brief Checks if the list contains a device with the ID. 100 | * 101 | * @param head Head of the list to look in 102 | * @param id device ID to look for. 103 | * 104 | * @retval 1 The list contains the device 105 | * @retval 0 The list does not contain the device 106 | * @retval -1 An error occurred and `errno` is set to indicate the cause 107 | */ 108 | int omemo_device_list_contains_id(struct device_list **head, 109 | int32_t id); 110 | 111 | /** 112 | * @brief Removes a device from the list. 113 | * 114 | * @param head Head of the list to remove from 115 | * @param device Device to remove 116 | * 117 | * @retval 0 The device was successfully removed from the list 118 | * @retval -1 An error occurred and `errno` is set to indicate 119 | * the cause 120 | */ 121 | int omemo_device_list_remove(struct device_list **head, 122 | struct omemo_device *device); 123 | 124 | /** 125 | * @brief Get the number of devices in the list. 126 | * 127 | * @param head Head of the list to count devices in 128 | * 129 | * @return Number of devices in list. 130 | */ 131 | uint32_t omemo_device_list_size(struct device_list **head); 132 | 133 | 134 | /** 135 | * @brief Frees a device from the list. 136 | * 137 | * @param head Head of the list to free from 138 | * @param device Device to free 139 | * 140 | * @retval 0 The device was successfully removed from the list and freed 141 | * @retval -1 An error occurred and `errno` is set to indicate the cause 142 | */ 143 | int omemo_device_list_free_device(struct device_list **head, 144 | struct omemo_device *device); 145 | 146 | /** 147 | * @brief Frees the device list and all devices it contains. 148 | * 149 | * @param head Head of the list to free 150 | */ 151 | void omemo_device_list_free(struct device_list **head); 152 | 153 | #ifdef __cplusplus 154 | } 155 | #endif 156 | 157 | #endif /* PROF_OMEMO_DEVICE_LIST_H */ 158 | -------------------------------------------------------------------------------- /structs/omemo_context.c: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | #include 4 | #include 5 | #include 6 | #include "omemo_context.h" 7 | 8 | #define UNUSED(x) (void)(x) 9 | 10 | static void omemo_lock(void *user_data) 11 | { 12 | struct omemo_context *context = user_data; 13 | 14 | pthread_mutex_lock(&context->mutex); 15 | } 16 | 17 | static void omemo_unlock(void *user_data) 18 | { 19 | struct omemo_context *context = user_data; 20 | 21 | pthread_mutex_unlock(&context->mutex); 22 | } 23 | 24 | struct omemo_context *omemo_context_create(const signal_protocol_address *address) 25 | { 26 | int retval; 27 | struct omemo_context *context; 28 | 29 | if (!address) { 30 | errno = EINVAL; 31 | return NULL; 32 | } 33 | 34 | context = malloc(sizeof(struct omemo_context)); 35 | if (!context) { 36 | errno = ENOMEM; 37 | return NULL; 38 | } 39 | 40 | memcpy(&context->own_address, address, sizeof(signal_protocol_address)); 41 | context->store_context = omemo_store_context_create(context); 42 | if (!context->store_context) { 43 | return NULL; 44 | } 45 | 46 | retval = signal_context_create(&context->signal_ctx, context); 47 | if (retval < 0) { 48 | errno = ENOMEM; 49 | return NULL; 50 | } 51 | 52 | retval = signal_context_set_crypto_provider(context->signal_ctx, &omemo_crypto_provider); 53 | if (retval < 0) { 54 | return NULL; 55 | } 56 | 57 | pthread_mutex_init(&context->mutex, NULL); 58 | retval = signal_context_set_locking_functions(context->signal_ctx, omemo_lock, omemo_unlock); 59 | if (retval < 0) { 60 | return NULL; 61 | } 62 | 63 | retval = signal_protocol_store_context_create(&context->signal_store_ctx, context->signal_ctx); 64 | if (retval < 0) { 65 | return NULL; 66 | } 67 | 68 | retval = signal_protocol_store_context_set_session_store(context->signal_store_ctx, 69 | &context->store_context->session_store); 70 | if (retval < 0) { 71 | return NULL; 72 | } 73 | 74 | retval = signal_protocol_store_context_set_pre_key_store(context->signal_store_ctx, 75 | &context->store_context->pre_key_store); 76 | if (retval < 0) { 77 | return NULL; 78 | } 79 | 80 | retval = signal_protocol_store_context_set_signed_pre_key_store(context->signal_store_ctx, 81 | &context->store_context->signed_pre_key_store); 82 | if (retval < 0) { 83 | return NULL; 84 | } 85 | 86 | retval = signal_protocol_store_context_set_identity_key_store(context->signal_store_ctx, 87 | &context->store_context->identity_key_store); 88 | if (retval < 0) { 89 | return NULL; 90 | } 91 | 92 | return context; 93 | } 94 | 95 | void omemo_context_free(struct omemo_context *context) 96 | { 97 | if (!context) { 98 | return; 99 | } 100 | 101 | signal_protocol_store_context_destroy(context->signal_store_ctx); 102 | signal_context_destroy(context->signal_ctx); 103 | pthread_mutex_destroy(&context->mutex); 104 | free(context->store_context); 105 | free(context); 106 | } 107 | -------------------------------------------------------------------------------- /structs/omemo_context.h: -------------------------------------------------------------------------------- 1 | #ifndef PROF_OMEMO_CONTEXT_H 2 | #define PROF_OMEMO_CONTEXT_H 3 | 4 | #include 5 | #include 6 | 7 | #ifdef __cplusplus 8 | extern "C" { 9 | #endif 10 | 11 | struct omemo_context { 12 | signal_protocol_address own_address; 13 | signal_context *signal_ctx; 14 | signal_protocol_store_context *signal_store_ctx; 15 | 16 | struct omemo_store_context *store_context; 17 | struct omemo_bundle *bundle; 18 | 19 | pthread_mutex_t mutex; 20 | }; 21 | 22 | struct omemo_context *omemo_context_create(const signal_protocol_address *address); 23 | 24 | void omemo_context_free(struct omemo_context *context); 25 | 26 | 27 | 28 | #ifdef __cplusplus 29 | } 30 | #endif 31 | 32 | #endif /* PROF_OMEMO_CONTEXT_H */ 33 | -------------------------------------------------------------------------------- /structs/omemo_device.c: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | #include 4 | 5 | #include "omemo_device.h" 6 | 7 | struct omemo_device *omemo_device_create(const char *jid, int32_t id) 8 | { 9 | if (!jid) { 10 | errno = EINVAL; 11 | return NULL; 12 | } 13 | 14 | struct omemo_device *new_device = malloc(sizeof(struct omemo_device)); 15 | 16 | if (new_device) { 17 | size_t jid_length = strlen(jid); 18 | new_device->address.name = jid; 19 | new_device->address.name_len = jid_length; 20 | new_device->address.device_id = id; 21 | 22 | new_device->trust = UNDECIDED; 23 | new_device->status = ACTIVE; 24 | } 25 | 26 | return new_device; 27 | } 28 | 29 | void omemo_device_free(struct omemo_device *device) 30 | { 31 | free(device); 32 | } 33 | 34 | -------------------------------------------------------------------------------- /structs/omemo_device.h: -------------------------------------------------------------------------------- 1 | #ifndef PROF_OMEMO_DEVICE_H 2 | #define PROF_OMEMO_DEVICE_H 3 | 4 | #include 5 | 6 | #include 7 | 8 | #ifdef __cplusplus 9 | extern "C" { 10 | #endif 11 | 12 | typedef enum _device_trust { 13 | UNDECIDED = 0, 14 | UNTRUSTED, 15 | TRUSTED, 16 | TRUST_COUNT 17 | } device_trust; 18 | 19 | typedef enum _device_status { 20 | INACTIVE = 0, 21 | ACTIVE, 22 | STATUS_COUNT 23 | } device_status; 24 | 25 | struct omemo_device { 26 | signal_protocol_address address; 27 | 28 | device_trust trust; 29 | device_status status; 30 | 31 | /* keys go here */ 32 | 33 | }; 34 | 35 | /** 36 | * @brief Allocates memory for a new OMEMO device. 37 | * 38 | * @param jid JID the device belongs to. 39 | * @param id ID the device will use. 40 | * 41 | * @return `NULL` if an error occured, a pointer to the created OMEMO device 42 | * otherwise. 43 | */ 44 | struct omemo_device *omemo_device_create(const char *jid, int32_t id); 45 | 46 | /** 47 | * @brief Deallocates memory for an OMEMO device. 48 | * 49 | * @param device Pointer to OMEMO device to be deleted. 50 | */ 51 | void omemo_device_free(struct omemo_device *device); 52 | 53 | #ifdef __cplusplus 54 | } 55 | #endif 56 | 57 | #endif /* PROF_OMEMO_DEVICE_H */ 58 | -------------------------------------------------------------------------------- /structs/targets.cmake: -------------------------------------------------------------------------------- 1 | set ( 2 | STRUCTS_SRC 3 | structs/device_list.h 4 | structs/device_list.c 5 | structs/omemo_context.h 6 | structs/omemo_context.c 7 | structs/omemo_device.h 8 | structs/omemo_device.c 9 | ) 10 | 11 | -------------------------------------------------------------------------------- /test/CMakeLists.txt: -------------------------------------------------------------------------------- 1 | include_directories ("${CMAKE_CURRENT_SOURCE_DIR}/ext/src/gtest/googletest/include/gtest") 2 | include_directories ("${CMAKE_CURRENT_SOURCE_DIR}/ext/src/gtest/googletest/include/gtest/internal") 3 | 4 | 5 | add_executable (test_omemo_crypto test_omemo_crypto.cpp test_main.h) 6 | target_link_libraries ( 7 | test_omemo_crypto 8 | profanity-omemo 9 | libgtest 10 | ) 11 | 12 | add_executable (test_omemo_device test_omemo_device.cpp test_main.h) 13 | target_link_libraries ( 14 | test_omemo_device 15 | profanity-omemo 16 | libgtest 17 | ) 18 | 19 | add_executable (test_omemo_device_list test_omemo_device_list.cpp test_main.h) 20 | target_link_libraries ( 21 | test_omemo_device_list 22 | profanity-omemo 23 | libgtest 24 | ) 25 | 26 | add_executable (test_omemo_pubsub test_omemo_pubsub.cpp test_main.h) 27 | target_link_libraries ( 28 | test_omemo_pubsub 29 | profanity-omemo 30 | libgtest 31 | ) 32 | 33 | add_executable (test_omemo_store test_omemo_store.cpp test_main.h) 34 | target_link_libraries ( 35 | test_omemo_store 36 | profanity-omemo 37 | libgtest 38 | ) 39 | 40 | add_test(NAME test_omemo_crypto COMMAND test_omemo_crypto) 41 | add_test(NAME test_omemo_device COMMAND test_omemo_device) 42 | add_test(NAME test_omemo_device_list COMMAND test_omemo_device_list) 43 | add_test(NAME test_omemo_pubsub COMMAND test_omemo_pubsub) 44 | add_test(NAME test_omemo_store COMMAND test_omemo_store) 45 | -------------------------------------------------------------------------------- /test/test_main.h: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | #include 4 | #include 5 | 6 | #include 7 | #include 8 | 9 | #include 10 | #include 11 | #include 12 | #include 13 | #include 14 | #include 15 | 16 | int main(int argc, char **argv) { 17 | ::testing::InitGoogleTest(&argc, argv); 18 | return RUN_ALL_TESTS(); 19 | } 20 | 21 | -------------------------------------------------------------------------------- /test/test_omemo_crypto.cpp: -------------------------------------------------------------------------------- 1 | #include "test_main.h" 2 | 3 | TEST(crypto, hmac256) 4 | { 5 | const char *test = "Hello, OMEMO!"; 6 | const char *key = "key"; 7 | 8 | gcry_mac_hd_t res_ctx; 9 | uint8_t *output = NULL; 10 | signal_buffer *buffer = NULL; 11 | size_t hash_len; 12 | void *context = NULL; 13 | 14 | omemo_hmac_sha256_init(&context, (uint8_t *)key, strlen(key), NULL); 15 | omemo_hmac_sha256_update(context, (uint8_t *)test, strlen(test), NULL); 16 | omemo_hmac_sha256_final(context, &buffer, NULL); 17 | omemo_hmac_sha256_cleanup(context, NULL); 18 | 19 | hash_len = gcry_mac_test_algo(GCRY_MAC_HMAC_SHA256); 20 | uint8_t result[hash_len]; 21 | memset(result, 0x0, hash_len); 22 | 23 | output = signal_buffer_data(buffer); 24 | 25 | gcry_mac_open(&res_ctx, GCRY_MAC_HMAC_SHA256, 0, NULL); 26 | gcry_mac_setkey(res_ctx, key, strlen(key)); 27 | gcry_mac_write(res_ctx, test, strlen(test)); 28 | gcry_mac_read(res_ctx, result, &hash_len); 29 | gcry_mac_close(res_ctx); 30 | 31 | ASSERT_EQ(memcmp(result, output, hash_len), 0); 32 | 33 | signal_buffer_free(buffer); 34 | } 35 | 36 | TEST(crypto, sha512) 37 | { 38 | const char *test = "Hello, OMEMO!"; 39 | 40 | uint8_t *output = NULL; 41 | uint8_t result[64]; 42 | signal_buffer *buffer = NULL;; 43 | size_t buffer_len; 44 | void *context = NULL; 45 | 46 | omemo_init_provider(); 47 | 48 | omemo_sha512_digest_init(&context, NULL); 49 | omemo_sha512_digest_update(context, (uint8_t *)test, strlen(test), NULL); 50 | omemo_sha512_digest_final(context, &buffer, NULL); 51 | omemo_sha512_digest_cleanup(context, NULL); 52 | 53 | memset(result, 0x0, 64); 54 | 55 | output = signal_buffer_data(buffer); 56 | 57 | gcry_md_hash_buffer(GCRY_MD_SHA512, result, test, strlen(test)); 58 | 59 | ASSERT_EQ(memcmp(result, output, signal_buffer_len(buffer)), 0); 60 | 61 | signal_buffer_free(buffer); 62 | } 63 | 64 | -------------------------------------------------------------------------------- /test/test_omemo_device.cpp: -------------------------------------------------------------------------------- 1 | #include "test_main.h" 2 | 3 | TEST(omemo_device, creation) 4 | { 5 | const char *jid = "test@testserver.test"; 6 | const uint32_t id = 1337; 7 | 8 | struct omemo_device *test_device; 9 | 10 | test_device = omemo_device_create(jid, id); 11 | 12 | ASSERT_STREQ(test_device->address.name, jid); 13 | ASSERT_EQ(test_device->address.device_id, id); 14 | 15 | omemo_device_free(test_device); 16 | } 17 | -------------------------------------------------------------------------------- /test/test_omemo_device_list.cpp: -------------------------------------------------------------------------------- 1 | #include "test_main.h" 2 | 3 | TEST(device_list, add) 4 | { 5 | int retval; 6 | struct device_list *list = NULL; 7 | 8 | struct omemo_device *device = omemo_device_create("test", 1337); 9 | 10 | retval = omemo_device_list_add(&list, device); 11 | 12 | ASSERT_EQ(retval, 1); 13 | 14 | ASSERT_EQ(list->next, nullptr); 15 | ASSERT_EQ(list->device, device); 16 | 17 | omemo_device_list_free(&list); 18 | 19 | ASSERT_EQ(list, nullptr); 20 | } 21 | 22 | TEST(device_list, size) 23 | { 24 | int retval; 25 | struct device_list *list = NULL; 26 | struct omemo_device *st_device = omemo_device_create("test", 1337); 27 | struct omemo_device *nd_device = omemo_device_create("test", 1338); 28 | 29 | retval = omemo_device_list_size(&list); 30 | 31 | ASSERT_EQ(retval, 0); 32 | 33 | omemo_device_list_add(&list, st_device); 34 | retval = omemo_device_list_size(&list); 35 | ASSERT_EQ(retval, 1); 36 | 37 | omemo_device_list_add(&list, nd_device); 38 | retval = omemo_device_list_size(&list); 39 | ASSERT_EQ(retval, 2); 40 | 41 | omemo_device_list_free(&list); 42 | ASSERT_EQ(list, nullptr); 43 | } 44 | 45 | TEST(device_list, contains) 46 | { 47 | int retval; 48 | struct device_list *list = NULL; 49 | struct omemo_device *in_list = omemo_device_create("test", 1337); 50 | struct omemo_device *nin_list = omemo_device_create("test2", 1338); 51 | 52 | omemo_device_list_add(&list, in_list); 53 | 54 | retval = omemo_device_list_contains(&list, in_list); 55 | 56 | ASSERT_EQ(retval, 1); 57 | 58 | retval = omemo_device_list_contains(&list, nin_list); 59 | 60 | ASSERT_EQ(retval, 0); 61 | 62 | omemo_device_list_free(&list); 63 | omemo_device_free(nin_list); 64 | } 65 | 66 | TEST(device_list, contains_id) 67 | { 68 | 69 | int retval; 70 | struct device_list *list = NULL; 71 | struct omemo_device *in_list = omemo_device_create("test", 1337); 72 | struct omemo_device *nin_list = omemo_device_create("test2", 1338); 73 | 74 | omemo_device_list_add(&list, in_list); 75 | 76 | retval = omemo_device_list_contains_id(&list, 1337); 77 | 78 | ASSERT_EQ(retval, 1); 79 | 80 | retval = omemo_device_list_contains_id(&list, 1338); 81 | 82 | ASSERT_EQ(retval, 0); 83 | 84 | omemo_device_list_free(&list); 85 | omemo_device_free(nin_list); 86 | } 87 | 88 | TEST(device_list, remove) 89 | { 90 | int retval; 91 | struct device_list *list = NULL; 92 | 93 | struct omemo_device *in_list = omemo_device_create("test", 1337); 94 | 95 | omemo_device_list_add(&list, in_list); 96 | 97 | ASSERT_EQ(omemo_device_list_contains(&list, in_list), 1); 98 | ASSERT_EQ(omemo_device_list_size(&list), 1); 99 | 100 | omemo_device_list_remove(&list, in_list); 101 | ASSERT_EQ(omemo_device_list_contains(&list, in_list), 0); 102 | ASSERT_EQ(omemo_device_list_size(&list), 0); 103 | 104 | omemo_device_free(in_list); 105 | omemo_device_list_free(&list); 106 | } 107 | 108 | TEST(device_list, remove_free_device) 109 | { 110 | int retval; 111 | struct device_list *list = NULL; 112 | 113 | struct omemo_device *in_list = omemo_device_create("test", 1337); 114 | 115 | omemo_device_list_add(&list, in_list); 116 | 117 | ASSERT_EQ(omemo_device_list_contains(&list, in_list), 1); 118 | ASSERT_EQ(omemo_device_list_size(&list), 1); 119 | 120 | omemo_device_list_free_device(&list, in_list); 121 | ASSERT_EQ(omemo_device_list_contains(&list, in_list), 0); 122 | ASSERT_EQ(omemo_device_list_size(&list), 0); 123 | 124 | omemo_device_list_free(&list); 125 | } 126 | 127 | TEST(device_list, free) 128 | { 129 | struct device_list *list = NULL; 130 | struct omemo_device *in_list = omemo_device_create("test", 1337); 131 | 132 | omemo_device_list_add(&list, in_list); 133 | 134 | ASSERT_EQ(omemo_device_list_contains(&list, in_list), 1); 135 | 136 | omemo_device_list_free(&list); 137 | ASSERT_EQ(omemo_device_list_contains(&list, in_list), 0); 138 | ASSERT_EQ(list, nullptr); 139 | } 140 | 141 | TEST(device_list, inval_input) 142 | { 143 | struct device_list *list = NULL; 144 | struct omemo_device *in_list = omemo_device_create("test", 1337); 145 | 146 | ASSERT_EQ(omemo_device_list_add(NULL, in_list), -1); 147 | ASSERT_EQ(omemo_device_list_add(&list, NULL), -1); 148 | 149 | ASSERT_EQ(omemo_device_list_contains(NULL, in_list), -1); 150 | ASSERT_EQ(omemo_device_list_contains(&list, NULL), -1); 151 | 152 | ASSERT_EQ(omemo_device_list_contains_id(NULL, 1), -1); 153 | ASSERT_EQ(omemo_device_list_contains_id(&list, 0), -1); 154 | 155 | ASSERT_EQ(omemo_device_list_remove(NULL, in_list), -1); 156 | ASSERT_EQ(omemo_device_list_remove(&list, NULL), -1); 157 | 158 | ASSERT_EQ(omemo_device_list_size(NULL), 0); 159 | 160 | ASSERT_EQ(omemo_device_list_free_device(NULL, in_list), -1); 161 | ASSERT_EQ(omemo_device_list_free_device(&list, NULL), -1); 162 | 163 | omemo_device_list_free(&list); 164 | omemo_device_free(in_list); 165 | } 166 | -------------------------------------------------------------------------------- /test/test_omemo_pubsub.cpp: -------------------------------------------------------------------------------- 1 | #include "test_main.h" 2 | 3 | TEST(pubsub, xml_output) 4 | { 5 | struct device_list *list = NULL; 6 | struct omemo_device *device = NULL; 7 | struct omemo_device *inactive = NULL; 8 | 9 | device = omemo_device_create("test@test.test", 1337); 10 | inactive = omemo_device_create("test@test.test", 1000); 11 | inactive->status = INACTIVE; 12 | 13 | omemo_device_list_add(&list, device); 14 | omemo_device_list_add(&list, inactive); 15 | 16 | omemo_publish_device_list("test@test.test", &list); 17 | 18 | omemo_device_list_free(&list); 19 | } 20 | -------------------------------------------------------------------------------- /test/test_omemo_store.cpp: -------------------------------------------------------------------------------- 1 | #include "test_main.h" 2 | 3 | TEST(store, store_user_device_list) 4 | { 5 | signal_protocol_address nick = {"test", 4, 1337}; 6 | struct device_list *list = NULL; 7 | struct omemo_device *device = NULL; 8 | struct omemo_device *inactive = NULL; 9 | 10 | device = omemo_device_create("test@test.test", 1337); 11 | inactive = omemo_device_create("test@test.test", 1000); 12 | inactive->status = INACTIVE; 13 | 14 | omemo_device_list_add(&list, device); 15 | omemo_device_list_add(&list, inactive); 16 | 17 | std::string result("A:1337\nI:1000"); 18 | std::string dir(std::getenv("HOME")); 19 | dir += std::string("/") + std::string(OMEMO_WORKING_DIR); 20 | dir += std::string("/") + std::string(nick.name) + std::string("/"); 21 | dir += std::to_string(nick.device_id); 22 | dir += "/devices"; 23 | 24 | ASSERT_TRUE(!omemo_store_device_list(&nick, list)); 25 | std::fstream f(dir.c_str()); 26 | ASSERT_TRUE(f.good()); 27 | 28 | std::string content((std::istreambuf_iterator(f)), 29 | std::istreambuf_iterator()); 30 | ASSERT_TRUE(content == result); 31 | 32 | omemo_device_list_free(&list); 33 | } 34 | 35 | TEST(store, store_contacts_device_list) 36 | { 37 | signal_protocol_address nick = {"test", 4, 1337}; 38 | struct device_list *list = NULL; 39 | struct omemo_device *device = NULL; 40 | struct omemo_device *inactive = NULL; 41 | 42 | device = omemo_device_create("notTest@test.test", 1337); 43 | inactive = omemo_device_create("notTest@test.test", 1000); 44 | inactive->status = INACTIVE; 45 | 46 | omemo_device_list_add(&list, device); 47 | omemo_device_list_add(&list, inactive); 48 | 49 | std::string result("A:1337\nI:1000"); 50 | std::string dir(std::getenv("HOME")); 51 | dir += std::string("/") + std::string(OMEMO_WORKING_DIR); 52 | dir += std::string("/") + std::string(nick.name) + std::string("/"); 53 | dir += std::to_string(nick.device_id); 54 | dir += "/contacts/notTest@test.test"; dir += "/devices"; 55 | 56 | 57 | ASSERT_TRUE(!omemo_store_device_list(&nick, list)); 58 | std::fstream f(dir.c_str()); 59 | ASSERT_TRUE(f.good()); 60 | 61 | std::string content((std::istreambuf_iterator(f)), 62 | std::istreambuf_iterator()); 63 | ASSERT_TRUE(content == result); 64 | 65 | omemo_device_list_free(&list); 66 | } 67 | 68 | TEST(store, is_local_user_existant) 69 | { 70 | signal_protocol_address nick = {"test", 4, 1337}; 71 | signal_protocol_address false_nick = {"notTest", 7, 1000}; 72 | struct device_list *list = NULL; 73 | struct omemo_device *device = NULL; 74 | 75 | device = omemo_device_create("test@test.test", 1337); 76 | 77 | omemo_device_list_add(&list, device); 78 | 79 | ASSERT_TRUE(!omemo_store_device_list(&nick, list)); 80 | ASSERT_TRUE(omemo_is_local_user_existent(&nick) == 1); 81 | ASSERT_TRUE(omemo_is_local_user_existent(&false_nick) == 0); 82 | 83 | omemo_device_list_free(&list); 84 | } 85 | -------------------------------------------------------------------------------- /xmpp/omemo_constants.h: -------------------------------------------------------------------------------- 1 | #ifndef PROF_OMEMO_OMEMO_CONST_H 2 | #define PROF_OMEMO_OMEMO_CONST_H 3 | 4 | #include 5 | 6 | static const char PUBSUB_PROTO_XML_NS[] = "http://jabber.org/protocol/pubsub"; 7 | 8 | static const char OMEMO_WORKING_DIR[] = ".local/share/profanity/omemo"; 9 | 10 | static const char OMEMO_DEVICE_LIST_PUBLISH_XML_NODE[] = "urn:xmpp:omemo:0:devicelist"; 11 | static const char OMEMO_DEVICE_LIST_XML_NS[] = "urn:xmpp:omemo:0"; 12 | 13 | static const uint32_t OMEMO_NUM_PRE_KEYS = 100; 14 | 15 | #endif /* PROF_OMEMO_OMEMO_CONST_H */ 16 | -------------------------------------------------------------------------------- /xmpp/pubsub.c: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | #include 4 | #include 5 | #include 6 | 7 | #include "pubsub.h" 8 | 9 | int omemo_publish_device_list(const char *jid, struct device_list **list) 10 | { 11 | int buf_size = 0; 12 | xmlBufferPtr buf = NULL; 13 | xmlNodePtr root, pubsub, publish, item; 14 | xmlNsPtr pubsub_ns; 15 | 16 | pubsub_ns = xmlNewNs(NULL, BAD_CAST PUBSUB_PROTO_XML_NS, NULL); 17 | if (!pubsub_ns) { 18 | errno = EINVAL; 19 | return -1; 20 | } 21 | 22 | root = xmlNewNode(NULL, BAD_CAST "iq"); 23 | xmlNewProp(root, BAD_CAST "from", BAD_CAST jid ); 24 | xmlNewProp(root, BAD_CAST "type", BAD_CAST "set" ); 25 | xmlNewProp(root, BAD_CAST "id", BAD_CAST "announce1"); 26 | 27 | pubsub = xmlNewNode(pubsub_ns, BAD_CAST "pubsub"); 28 | xmlAddChild(root, pubsub); 29 | 30 | publish = xmlNewNode(NULL, BAD_CAST "publish"); 31 | xmlNewProp(publish, BAD_CAST "node", BAD_CAST OMEMO_DEVICE_LIST_PUBLISH_XML_NODE); 32 | xmlAddChild(pubsub, publish); 33 | 34 | item = xmlNewNode(NULL, BAD_CAST "item"); 35 | xmlAddChild(publish, item); 36 | 37 | if (omemo_device_list_serialize_xml(&item, list) < 0) { 38 | return -1; 39 | } 40 | 41 | /* Now Dump everything in the buffer and copy it into string to send */ 42 | buf = xmlBufferCreate(); 43 | buf_size = xmlNodeDump(buf, NULL, root, 0, 1); 44 | if (buf_size < 0) { 45 | errno = EIO; 46 | return -1; 47 | } 48 | 49 | 50 | /* Send the stanza here */ 51 | puts((char *)buf->content); 52 | 53 | xmlBufferFree(buf); 54 | xmlFreeNode(root); 55 | xmlFreeNs(pubsub_ns); 56 | 57 | xmlCleanupParser(); 58 | 59 | return 0; 60 | } 61 | 62 | 63 | -------------------------------------------------------------------------------- /xmpp/pubsub.h: -------------------------------------------------------------------------------- 1 | #ifndef PROF_OMEMO_PUBSUB_H 2 | #define PROF_OMEMO_PUBSUB_H 3 | 4 | #include 5 | 6 | #ifdef __cplusplus 7 | extern "C" { 8 | #endif 9 | 10 | struct device_list; 11 | 12 | int omemo_publish_device_list(const char *jid, struct device_list **list); 13 | 14 | #ifdef __cplusplus 15 | } 16 | #endif 17 | 18 | #endif /* PROF_OMEMO_PUBSUB_H */ 19 | -------------------------------------------------------------------------------- /xmpp/targets.cmake: -------------------------------------------------------------------------------- 1 | set ( 2 | XMPP_SRC 3 | xmpp/pubsub.h 4 | xmpp/pubsub.c 5 | xmpp/omemo_constants.h 6 | ) 7 | --------------------------------------------------------------------------------