- {
- BIO *dbio;
- BIO_ENC_CTX *ctx,*dctx;
- long ret=1;
- int i;
- EVP_CIPHER_CTX **c_ctx;
-
- ctx=(BIO_ENC_CTX *)b->ptr;
-
- switch (cmd)
- {
- case BIO_CTRL_RESET:
- ctx->ok=1;
- ctx->finished=0;
- EVP_CipherInit(&(ctx->cipher),NULL,NULL,NULL,
- ctx->cipher.encrypt);
- ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
- break;
- case BIO_CTRL_EOF: /* More to read */
- if (ctx->cont <= 0)
- ret=1;
- else
- ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
- break;
- case BIO_CTRL_WPENDING:
- ret=ctx->buf_len-ctx->buf_off;
- if (ret <= 0)
- ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
- break;
- case BIO_CTRL_PENDING: /* More to read in buffer */
- ret=ctx->buf_len-ctx->buf_off;
- if (ret <= 0)
- ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
- break;
- case BIO_CTRL_FLUSH:
- /* do a final write */
-again:
- while (ctx->buf_len != ctx->buf_off)
- {
- i=enc_write(b,NULL,0);
- if (i < 0)
- {
- ret=i;
- break;
- }
- }
-
- if (!ctx->finished)
- {
- ctx->finished=1;
- ctx->buf_off=0;
- ret=EVP_CipherFinal(&(ctx->cipher),
- (unsigned char *)ctx->buf,
- &(ctx->buf_len));
- ctx->ok=(int)ret;
- if (ret <= 0) break;
-
- /* push out the bytes */
- goto again;
- }
-
- /* Finally flush the underlying BIO */
- ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
- break;
- case BIO_C_GET_CIPHER_STATUS:
- ret=(long)ctx->ok;
- break;
- case BIO_C_DO_STATE_MACHINE:
- BIO_clear_retry_flags(b);
- ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
- BIO_copy_next_retry(b);
- break;
- case BIO_C_GET_CIPHER_CTX:
- c_ctx=(EVP_CIPHER_CTX **)ptr;
- (*c_ctx)= &(ctx->cipher);
- b->init=1;
- break;
- case BIO_CTRL_DUP:
- dbio=(BIO *)ptr;
- dctx=(BIO_ENC_CTX *)dbio->ptr;
- memcpy(&(dctx->cipher),&(ctx->cipher),sizeof(ctx->cipher));
- dbio->init=1;
- break;
- default:
- ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
- break;
- }
- return(ret);
- }
-
-static long enc_callback_ctrl(BIO *b, int cmd, void (*fp)())
- {
- long ret=1;
-
- if (b->next_bio == NULL) return(0);
- switch (cmd)
- {
- default:
- ret=BIO_callback_ctrl(b->next_bio,cmd,fp);
- break;
- }
- return(ret);
- }
-
-/*
+{
+ BIO *dbio;
+ BIO_ENC_CTX *ctx, *dctx;
+ long ret = 1;
+ int i;
+ EVP_CIPHER_CTX **c_ctx;
+
+ ctx = (BIO_ENC_CTX *)b->ptr;
+
+ switch (cmd) {
+ case BIO_CTRL_RESET:
+ ctx->ok = 1;
+ ctx->finished = 0;
+ if (!EVP_CipherInit_ex(&(ctx->cipher), NULL, NULL, NULL, NULL,
+ ctx->cipher.encrypt))
+ return 0;
+ ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+ break;
+ case BIO_CTRL_EOF: /* More to read */
+ if (ctx->cont <= 0)
+ ret = 1;
+ else
+ ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+ break;
+ case BIO_CTRL_WPENDING:
+ ret = ctx->buf_len - ctx->buf_off;
+ if (ret <= 0)
+ ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+ break;
+ case BIO_CTRL_PENDING: /* More to read in buffer */
+ ret = ctx->buf_len - ctx->buf_off;
+ if (ret <= 0)
+ ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+ break;
+ case BIO_CTRL_FLUSH:
+ /* do a final write */
+ again:
+ while (ctx->buf_len != ctx->buf_off) {
+ i = enc_write(b, NULL, 0);
+ if (i < 0)
+ return i;
+ }
+
+ if (!ctx->finished) {
+ ctx->finished = 1;
+ ctx->buf_off = 0;
+ ret = EVP_CipherFinal_ex(&(ctx->cipher),
+ (unsigned char *)ctx->buf,
+ &(ctx->buf_len));
+ ctx->ok = (int)ret;
+ if (ret <= 0)
+ break;
+
+ /* push out the bytes */
+ goto again;
+ }
+
+ /* Finally flush the underlying BIO */
+ ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+ break;
+ case BIO_C_GET_CIPHER_STATUS:
+ ret = (long)ctx->ok;
+ break;
+ case BIO_C_DO_STATE_MACHINE:
+ BIO_clear_retry_flags(b);
+ ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+ BIO_copy_next_retry(b);
+ break;
+ case BIO_C_GET_CIPHER_CTX:
+ c_ctx = (EVP_CIPHER_CTX **)ptr;
+ (*c_ctx) = &(ctx->cipher);
+ b->init = 1;
+ break;
+ case BIO_CTRL_DUP:
+ dbio = (BIO *)ptr;
+ dctx = (BIO_ENC_CTX *)dbio->ptr;
+ EVP_CIPHER_CTX_init(&dctx->cipher);
+ ret = EVP_CIPHER_CTX_copy(&dctx->cipher, &ctx->cipher);
+ if (ret)
+ dbio->init = 1;
+ break;
+ default:
+ ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+ break;
+ }
+ return (ret);
+}
+
+static long enc_callback_ctrl(BIO *b, int cmd, bio_info_cb *fp)
+{
+ long ret = 1;
+
+ if (b->next_bio == NULL)
+ return (0);
+ switch (cmd) {
+ default:
+ ret = BIO_callback_ctrl(b->next_bio, cmd, fp);
+ break;
+ }
+ return (ret);
+}
+
+/*-