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Fix for BIO with callbacks not called after PR #3824 (was always returning WANT_READ).

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This commit is contained in:
David Garske
2021-03-22 10:36:39 -07:00
parent fd94d05b0a
commit 5c762afb94
3 changed files with 45 additions and 42 deletions
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17
src/bio.c
View File

@ -213,7 +213,7 @@ int wolfSSL_BIO_read(WOLFSSL_BIO* bio, void* buf, int len)
if (bio->method && bio->method->readCb) {
ret = bio->method->readCb(bio, (char*)buf, len);
}
else {
/* formatting data */
if (bio->type == WOLFSSL_BIO_BASE64 && ret > 0 && sz > 0) {
ret = wolfSSL_BIO_BASE64_read(bio, buf, sz);
@ -254,6 +254,7 @@ int wolfSSL_BIO_read(WOLFSSL_BIO* bio, void* buf, int len)
if (bio->type == WOLFSSL_BIO_SOCKET) {
ret = wolfIO_Recv(bio->num, (char*)buf, len, 0);
}
}
/* case where front of list is done */
if (bio == front) {
@ -263,6 +264,12 @@ int wolfSSL_BIO_read(WOLFSSL_BIO* bio, void* buf, int len)
if (ret > 0) {
sz = ret; /* adjust size for formatting */
}
else {
if (wolfSSL_BIO_supports_pending(bio) &&
wolfSSL_BIO_ctrl_pending(bio) == 0) {
ret = WOLFSSL_CBIO_ERR_WANT_READ;
}
}
/* previous WOLFSSL_BIO in list working towards head of list */
bio = bio->prev;
@ -1144,7 +1151,7 @@ int wolfSSL_BIO_ctrl_reset_read_request(WOLFSSL_BIO *b)
WOLFSSL_ENTER("wolfSSL_BIO_ctrl_reset_read_request");
if (b == NULL || b->type == WOLFSSL_BIO_MEMORY) {
return SSL_FAILURE;
return WOLFSSL_FAILURE;
}
b->readRq = 0;
@ -1194,7 +1201,7 @@ int wolfSSL_BIO_nread(WOLFSSL_BIO *bio, char **buf, int num)
}
if (bio->type == WOLFSSL_BIO_MEMORY) {
return SSL_FAILURE;
return WOLFSSL_FAILURE;
}
if (bio->pair != NULL) {
@ -1246,7 +1253,7 @@ int wolfSSL_BIO_nwrite(WOLFSSL_BIO *bio, char **buf, int num)
}
if (bio->type != WOLFSSL_BIO_BIO) {
return SSL_FAILURE;
return WOLFSSL_FAILURE;
}
if (bio->pair != NULL) {
@ -1414,7 +1421,7 @@ long wolfSSL_BIO_get_fp(WOLFSSL_BIO *bio, XFILE* fp)
}
if (bio->type != WOLFSSL_BIO_FILE) {
return SSL_FAILURE;
return WOLFSSL_FAILURE;
}
*fp = (XFILE)bio->ptr;

5
src/wolfio.c
View File

@ -133,11 +133,6 @@ int BioReceive(WOLFSSL* ssl, char* buf, int sz, void* ctx)
return WOLFSSL_CBIO_ERR_GENERAL;
}
if (wolfSSL_BIO_supports_pending(ssl->biord) &&
wolfSSL_BIO_ctrl_pending(ssl->biord) == 0) {
WOLFSSL_MSG("BIO want read");
return WOLFSSL_CBIO_ERR_WANT_READ;
}
recvd = wolfSSL_BIO_read(ssl->biord, buf, sz);
if (recvd <= 0) {
if (ssl->biord->type == WOLFSSL_BIO_SOCKET) {

1
wolfssl/ssl.h
View File

@ -3625,6 +3625,7 @@ WOLFSSL_API size_t wolfSSL_get_client_random(const WOLFSSL* ssl,
#if defined(OPENSSL_EXTRA) || defined(OPENSSL_ALL)
WOLFSSL_API size_t wolfSSL_BIO_wpending(const WOLFSSL_BIO *bio);
/* non-standard API to determine if BIO supports "pending" */
WOLFSSL_API int wolfSSL_BIO_supports_pending(const WOLFSSL_BIO *bio);
WOLFSSL_API size_t wolfSSL_BIO_ctrl_pending(WOLFSSL_BIO *b);