Merge `signal-protocol` into `omemo` plugin

Same reasoning as for the `openpgp` plugin.

1 files changed, 0 insertions, 377 deletions

diff --git a/plugins/signal-protocol/src/signal_helper.c b/plugins/signal-protocol/src/signal_helper.c
deleted file mode 100644
index 1a428c44..00000000
--- a/plugins/signal-protocol/src/signal_helper.c
+++ /dev/null
@@ -1,377 +0,0 @@
-#include <signal_helper.h>
-
-#include <gcrypt.h>
-
-signal_type_base* signal_type_ref_vapi(void* instance) {
-    g_return_val_if_fail(instance != NULL, NULL);
-    signal_type_ref(instance);
-    return instance;
-}
-
-signal_type_base* signal_type_unref_vapi(void* instance) {
-    g_return_val_if_fail(instance != NULL, NULL);
-    signal_type_unref(instance);
-    return NULL;
-}
-
-signal_protocol_address* signal_protocol_address_new(const gchar* name, int32_t device_id) {
-    g_return_val_if_fail(name != NULL, NULL);
-    signal_protocol_address* address = malloc(sizeof(signal_protocol_address));
-    address->device_id = -1;
-    address->name = NULL;
-    signal_protocol_address_set_name(address, name);
-    signal_protocol_address_set_device_id(address, device_id);
-    return address;
-}
-
-void signal_protocol_address_free(signal_protocol_address* ptr) {
-    g_return_if_fail(ptr != NULL);
-    if (ptr->name) {
-        g_free((void*)ptr->name);
-    }
-    return free(ptr);
-}
-
-void signal_protocol_address_set_name(signal_protocol_address* self, const gchar* name) {
-    g_return_if_fail(self != NULL);
-    g_return_if_fail(name != NULL);
-    gchar* n = g_malloc(strlen(name)+1);
-    memcpy(n, name, strlen(name));
-    n[strlen(name)] = 0;
-    if (self->name) {
-        g_free((void*)self->name);
-    }
-    self->name = n;
-    self->name_len = strlen(n);
-}
-
-gchar* signal_protocol_address_get_name(signal_protocol_address* self) {
-    g_return_val_if_fail(self != NULL, NULL);
-    g_return_val_if_fail(self->name != NULL, 0);
-    gchar* res = g_malloc(sizeof(char) * (self->name_len + 1));
-    memcpy(res, self->name, self->name_len);
-    res[self->name_len] = 0;
-    return res;
-}
-
-int32_t signal_protocol_address_get_device_id(signal_protocol_address* self) {
-    g_return_val_if_fail(self != NULL, -1);
-    return self->device_id;
-}
-
-void signal_protocol_address_set_device_id(signal_protocol_address* self, int32_t device_id) {
-    g_return_if_fail(self != NULL);
-    self->device_id = device_id;
-}
-
-int signal_vala_randomize(uint8_t *data, size_t len) {
-    gcry_randomize(data, len, GCRY_STRONG_RANDOM);
-    return SG_SUCCESS;
-}
-
-int signal_vala_random_generator(uint8_t *data, size_t len, void *user_data) {
-    gcry_randomize(data, len, GCRY_STRONG_RANDOM);
-    return SG_SUCCESS;
-}
-
-int signal_vala_hmac_sha256_init(void **hmac_context, const uint8_t *key, size_t key_len, void *user_data) {
-    gcry_mac_hd_t* ctx = malloc(sizeof(gcry_mac_hd_t));
-    if (!ctx) return SG_ERR_NOMEM;
-
-    if (gcry_mac_open(ctx, GCRY_MAC_HMAC_SHA256, 0, 0)) {
-        free(ctx);
-        return SG_ERR_UNKNOWN;
-    }
-
-    if (gcry_mac_setkey(*ctx, key, key_len)) {
-        free(ctx);
-        return SG_ERR_UNKNOWN;
-    }
-
-    *hmac_context = ctx;
-
-    return SG_SUCCESS;
-}
-
-int signal_vala_hmac_sha256_update(void *hmac_context, const uint8_t *data, size_t data_len, void *user_data) {
-    gcry_mac_hd_t* ctx = hmac_context;
-
-    if (gcry_mac_write(*ctx, data, data_len)) return SG_ERR_UNKNOWN;
-
-    return SG_SUCCESS;
-}
-
-int signal_vala_hmac_sha256_final(void *hmac_context, signal_buffer **output, void *user_data) {
-    size_t len = gcry_mac_get_algo_maclen(GCRY_MAC_HMAC_SHA256);
-    uint8_t md[len];
-    gcry_mac_hd_t* ctx = hmac_context;
-
-    if (gcry_mac_read(*ctx, md, &len)) return SG_ERR_UNKNOWN;
-
-    signal_buffer *output_buffer = signal_buffer_create(md, len);
-    if (!output_buffer) return SG_ERR_NOMEM;
-
-    *output = output_buffer;
-
-    return SG_SUCCESS;
-}
-
-void signal_vala_hmac_sha256_cleanup(void *hmac_context, void *user_data) {
-    gcry_mac_hd_t* ctx = hmac_context;
-    if (ctx) {
-        gcry_mac_close(*ctx);
-        free(ctx);
-    }
-}
-
-int signal_vala_sha512_digest_init(void **digest_context, void *user_data) {
-    gcry_md_hd_t* ctx = malloc(sizeof(gcry_mac_hd_t));
-    if (!ctx) return SG_ERR_NOMEM;
-
-    if (gcry_md_open(ctx, GCRY_MD_SHA512, 0)) {
-        free(ctx);
-        return SG_ERR_UNKNOWN;
-    }
-
-    *digest_context = ctx;
-
-    return SG_SUCCESS;
-}
-
-int signal_vala_sha512_digest_update(void *digest_context, const uint8_t *data, size_t data_len, void *user_data) {
-    gcry_md_hd_t* ctx = digest_context;
-
-    gcry_md_write(*ctx, data, data_len);
-
-    return SG_SUCCESS;
-}
-
-int signal_vala_sha512_digest_final(void *digest_context, signal_buffer **output, void *user_data) {
-    size_t len = gcry_md_get_algo_dlen(GCRY_MD_SHA512);
-    gcry_md_hd_t* ctx = digest_context;
-
-    uint8_t* md = gcry_md_read(*ctx, GCRY_MD_SHA512);
-    if (!md) return SG_ERR_UNKNOWN;
-
-    gcry_md_reset(*ctx);
-
-    signal_buffer *output_buffer = signal_buffer_create(md, len);
-    free(md);
-    if (!output_buffer) return SG_ERR_NOMEM;
-
-    *output = output_buffer;
-
-    return SG_SUCCESS;
-}
-
-void signal_vala_sha512_digest_cleanup(void *digest_context, void *user_data) {
-    gcry_md_hd_t* ctx = digest_context;
-    if (ctx) {
-        gcry_md_close(*ctx);
-        free(ctx);
-    }
-}
-
-const int aes_cipher(int cipher, size_t key_len, int* algo, int* mode) {
-    switch (key_len) {
-        case 16:
-            *algo = GCRY_CIPHER_AES128;
-            break;
-        case 24:
-            *algo = GCRY_CIPHER_AES192;
-            break;
-        case 32:
-            *algo = GCRY_CIPHER_AES256;
-            break;
-        default:
-            return SG_ERR_UNKNOWN;
-    }
-    switch (cipher) {
-        case SG_CIPHER_AES_CBC_PKCS5:
-            *mode = GCRY_CIPHER_MODE_CBC;
-            break;
-        case SG_CIPHER_AES_CTR_NOPADDING:
-            *mode = GCRY_CIPHER_MODE_CTR;
-            break;
-        case SG_CIPHER_AES_GCM_NOPADDING:
-            *mode = GCRY_CIPHER_MODE_GCM;
-            break;
-        default:
-            return SG_ERR_UNKNOWN;
-    }
-    return SG_SUCCESS;
-}
-
-int signal_vala_encrypt(signal_buffer **output,
-        int cipher,
-        const uint8_t *key, size_t key_len,
-        const uint8_t *iv, size_t iv_len,
-        const uint8_t *plaintext, size_t plaintext_len,
-        void *user_data) {
-    int algo, mode, error_code = SG_ERR_UNKNOWN;
-    if (aes_cipher(cipher, key_len, &algo, &mode)) return SG_ERR_INVAL;
-
-    gcry_cipher_hd_t ctx = {0};
-
-    if (gcry_cipher_open(&ctx, algo, mode, 0)) return SG_ERR_NOMEM;
-
-    signal_buffer* padded = 0;
-    signal_buffer* out_buf = 0;
-    goto no_error;
-error:
-    gcry_cipher_close(ctx);
-    if (padded != 0) {
-        signal_buffer_bzero_free(padded);
-    }
-    if (out_buf != 0) {
-        signal_buffer_free(out_buf);
-    }
-    return error_code;
-no_error:
-
-    if (gcry_cipher_setkey(ctx, key, key_len)) goto error;
-
-    uint8_t tag_len = 0, pad_len = 0;
-    switch (cipher) {
-        case SG_CIPHER_AES_CBC_PKCS5:
-            if (gcry_cipher_setiv(ctx, iv, iv_len)) goto error;
-            pad_len = 16 - (plaintext_len % 16);
-            if (pad_len == 0) pad_len = 16;
-            break;
-        case SG_CIPHER_AES_CTR_NOPADDING:
-            if (gcry_cipher_setctr(ctx, iv, iv_len)) goto error;
-            break;
-        case SG_CIPHER_AES_GCM_NOPADDING:
-            if (gcry_cipher_setiv(ctx, iv, iv_len)) goto error;
-            tag_len = 16;
-            break;
-        default:
-            return SG_ERR_UNKNOWN;
-    }
-
-    size_t padded_len = plaintext_len + pad_len;
-    padded = signal_buffer_alloc(padded_len);
-    if (padded == 0) {
-        error_code = SG_ERR_NOMEM;
-        goto error;
-    }
-
-    memset(signal_buffer_data(padded) + plaintext_len, pad_len, pad_len);
-    memcpy(signal_buffer_data(padded), plaintext, plaintext_len);
-
-    out_buf = signal_buffer_alloc(padded_len + tag_len);
-    if (out_buf == 0) {
-        error_code = SG_ERR_NOMEM;
-        goto error;
-    }
-
-    if (gcry_cipher_encrypt(ctx, signal_buffer_data(out_buf), padded_len, signal_buffer_data(padded), padded_len)) goto error;
-
-    if (tag_len > 0) {
-        if (gcry_cipher_gettag(ctx, signal_buffer_data(out_buf) + padded_len, tag_len)) goto error;
-    }
-
-    *output = out_buf;
-    out_buf = 0;
-
-    signal_buffer_bzero_free(padded);
-    padded = 0;
-
-    gcry_cipher_close(ctx);
-    return SG_SUCCESS;
-}
-
-int signal_vala_decrypt(signal_buffer **output,
-        int cipher,
-        const uint8_t *key, size_t key_len,
-        const uint8_t *iv, size_t iv_len,
-        const uint8_t *ciphertext, size_t ciphertext_len,
-        void *user_data) {
-    int algo, mode, error_code = SG_ERR_UNKNOWN;
-    *output = 0;
-    if (aes_cipher(cipher, key_len, &algo, &mode)) return SG_ERR_INVAL;
-    if (ciphertext_len == 0) return SG_ERR_INVAL;
-
-    gcry_cipher_hd_t ctx = {0};
-
-    if (gcry_cipher_open(&ctx, algo, mode, 0)) return SG_ERR_NOMEM;
-
-    signal_buffer* out_buf = 0;
-    goto no_error;
-error:
-    gcry_cipher_close(ctx);
-    if (out_buf != 0) {
-        signal_buffer_bzero_free(out_buf);
-    }
-    return error_code;
-no_error:
-
-    if (gcry_cipher_setkey(ctx, key, key_len)) goto error;
-
-    uint8_t tag_len = 0, pkcs_pad = FALSE;
-    switch (cipher) {
-        case SG_CIPHER_AES_CBC_PKCS5:
-            if (gcry_cipher_setiv(ctx, iv, iv_len)) goto error;
-            pkcs_pad = TRUE;
-            break;
-        case SG_CIPHER_AES_CTR_NOPADDING:
-            if (gcry_cipher_setctr(ctx, iv, iv_len)) goto error;
-            break;
-        case SG_CIPHER_AES_GCM_NOPADDING:
-            if (gcry_cipher_setiv(ctx, iv, iv_len)) goto error;
-            if (ciphertext_len < 16) goto error;
-            tag_len = 16;
-            break;
-        default:
-            goto error;
-    }
-
-    size_t padded_len = ciphertext_len - tag_len;
-    out_buf = signal_buffer_alloc(padded_len);
-    if (out_buf == 0) {
-        error_code = SG_ERR_NOMEM;
-        goto error;
-    }
-
-    if (gcry_cipher_decrypt(ctx, signal_buffer_data(out_buf), signal_buffer_len(out_buf), ciphertext, padded_len)) goto error;
-
-    if (tag_len > 0) {
-        if (gcry_cipher_checktag(ctx, ciphertext + padded_len, tag_len)) goto error;
-    }
-
-    if (pkcs_pad) {
-        uint8_t pad_len = signal_buffer_data(out_buf)[padded_len - 1];
-        if (pad_len > 16 || pad_len > padded_len) goto error;
-        *output = signal_buffer_create(signal_buffer_data(out_buf), padded_len - pad_len);
-        signal_buffer_bzero_free(out_buf);
-        out_buf = 0;
-    } else {
-        *output = out_buf;
-        out_buf = 0;
-    }
-
-    gcry_cipher_close(ctx);
-    return SG_SUCCESS;
-}
-
-void setup_signal_vala_crypto_provider(signal_context *context)
-{
-    gcry_check_version(NULL);
-
-    signal_crypto_provider provider = {
-            .random_func = signal_vala_random_generator,
-            .hmac_sha256_init_func = signal_vala_hmac_sha256_init,
-            .hmac_sha256_update_func = signal_vala_hmac_sha256_update,
-            .hmac_sha256_final_func = signal_vala_hmac_sha256_final,
-            .hmac_sha256_cleanup_func = signal_vala_hmac_sha256_cleanup,
-            .sha512_digest_init_func = signal_vala_sha512_digest_init,
-            .sha512_digest_update_func = signal_vala_sha512_digest_update,
-            .sha512_digest_final_func = signal_vala_sha512_digest_final,
-            .sha512_digest_cleanup_func = signal_vala_sha512_digest_cleanup,
-            .encrypt_func = signal_vala_encrypt,
-            .decrypt_func = signal_vala_decrypt,
-            .user_data = 0
-    };
-
-    signal_context_set_crypto_provider(context, &provider);
-}