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-rw-r--r--src/sbearssl/sbearssl_run.c39
-rw-r--r--src/stls/stls_run.c50
2 files changed, 53 insertions, 36 deletions
diff --git a/src/sbearssl/sbearssl_run.c b/src/sbearssl/sbearssl_run.c
index efd711c..e4d49fa 100644
--- a/src/sbearssl/sbearssl_run.c
+++ b/src/sbearssl/sbearssl_run.c
@@ -18,6 +18,7 @@ int sbearssl_run (br_ssl_engine_context *ctx, int *fds, unsigned int verbosity,
{
iopause_fd x[4] ;
unsigned int xindex[4] ;
+ int markedforflush = 0 ;
if (ndelay_on(fds[2]) < 0 || ndelay_on(fds[3]) < 0)
strerr_diefu1sys(111, "set fds non-blocking") ;
@@ -31,6 +32,8 @@ int sbearssl_run (br_ssl_engine_context *ctx, int *fds, unsigned int verbosity,
unsigned int state = br_ssl_engine_current_state(ctx) ;
int r ;
+ if (state & BR_SSL_CLOSED) break ;
+
tain_add_g(&deadline, fds[0] >= 0 && fds[2] >= 0 && state & (BR_SSL_SENDAPP | BR_SSL_RECVREC) ? tto : &tain_infinite_relative) ;
if (fds[0] >= 0 && state & BR_SSL_SENDAPP)
@@ -92,11 +95,11 @@ int sbearssl_run (br_ssl_engine_context *ctx, int *fds, unsigned int verbosity,
else
{
br_ssl_engine_recvapp_ack(ctx, w) ;
- state = br_ssl_engine_current_state(ctx) ;
if (fds[2] < 0 && w == len)
{
fd_close(fds[1]) ; fds[1] = -1 ;
}
+ state = br_ssl_engine_current_state(ctx) ;
}
}
@@ -116,42 +119,56 @@ int sbearssl_run (br_ssl_engine_context *ctx, int *fds, unsigned int verbosity,
else
{
br_ssl_engine_sendrec_ack(ctx, w) ;
- state = br_ssl_engine_current_state(ctx) ;
if (fds[0] < 0 && w == len)
{
- if (options & 1) shutdown(fds[3], SHUT_WR) ;
- fd_close(fds[3]) ; fds[3] = -1 ;
+ if (options & 1)
+ {
+ shutdown(fds[3], SHUT_WR) ;
+ fd_close(fds[3]) ; fds[3] = -1 ;
+ }
+ else br_ssl_engine_close(ctx) ;
}
+ state = br_ssl_engine_current_state(ctx) ;
}
}
/* Fill from local */
- if (state & BR_SSL_SENDAPP && x[xindex[0]].events & x[xindex[0]].revents & IOPAUSE_READ)
+ if (state & BR_SSL_SENDAPP && x[xindex[0]].events & IOPAUSE_READ && (markedforflush || x[xindex[0]].revents & IOPAUSE_READ))
{
size_t len ;
unsigned char *s = br_ssl_engine_sendapp_buf(ctx, &len) ;
size_t w = allread(fds[0], (char *)s, len) ;
if (!w)
{
+ br_ssl_engine_flush(ctx, 0) ;
+ markedforflush = 0 ;
if (!error_isagain(errno))
{
fd_close(fds[0]) ; fds[0] = -1 ;
- if (fds[2] >= 0) br_ssl_engine_close(ctx) ;
if (!br_ssl_engine_sendrec_buf(ctx, &len))
{
- if (options & 1) shutdown(fds[3], SHUT_WR) ;
- fd_close(fds[3]) ; fds[3] = -1 ;
+ if (options & 1)
+ {
+ shutdown(fds[3], SHUT_WR) ;
+ fd_close(fds[3]) ; fds[3] = -1 ;
+ }
+ else br_ssl_engine_close(ctx) ;
}
}
}
else
{
br_ssl_engine_sendapp_ack(ctx, w) ;
- br_ssl_engine_flush(ctx, 0) ;
- state = br_ssl_engine_current_state(ctx) ;
+ if (w == len) markedforflush = 1 ;
+ else
+ {
+ br_ssl_engine_flush(ctx, 0) ;
+ markedforflush = 0 ;
+ }
}
+ state = br_ssl_engine_current_state(ctx) ;
}
@@ -168,7 +185,7 @@ int sbearssl_run (br_ssl_engine_context *ctx, int *fds, unsigned int verbosity,
{
if (options & 1) shutdown(fds[2], SHUT_RD) ;
fd_close(fds[2]) ; fds[2] = -1 ;
- if (!br_ssl_engine_recvapp_buf(ctx, &len))
+ if (fds[1] >= 0 && !br_ssl_engine_recvapp_buf(ctx, &len))
{
fd_close(fds[1]) ; fds[1] = -1 ;
}
diff --git a/src/stls/stls_run.c b/src/stls/stls_run.c
index 09f9bc0..848295c 100644
--- a/src/stls/stls_run.c
+++ b/src/stls/stls_run.c
@@ -102,14 +102,17 @@ static inline int buffer_tls_fill (struct tls *ctx, tlsbuf_t *b)
return ok ;
}
-static void closeit (struct tls *ctx, int *fds, int doshd)
+static void send_closenotify (struct tls *ctx, int const *fds)
{
- if (fds[2] >= 0)
- {
- ndelay_off(fds[3]) ;
- tls_close(ctx) ;
- }
- if (doshd) shutdown(fds[3], SHUT_WR) ;
+ iopause_fd x = { .fd = fds[3], .events = IOPAUSE_WRITE } ;
+ while (tls_close(ctx) == TLS_WANT_POLLOUT)
+ iopause_g(&x, 1, 0) ;
+}
+
+static void closeit (struct tls *ctx, int *fds, int brutal)
+{
+ if (brutal) shutdown(fds[3], SHUT_WR) ;
+ else if (fds[2] >= 0) send_closenotify(ctx, fds) ;
fd_close(fds[3]) ; fds[3] = -1 ;
}
@@ -118,7 +121,6 @@ int stls_run (struct tls *ctx, int *fds, unsigned int verbosity, uint32 options,
tlsbuf_t b[2] = { { .blockedonother = 0 }, { .blockedonother = 0 } } ;
iopause_fd x[4] ;
unsigned int xindex[4] ;
- int closing = 0 ;
register unsigned int i ;
for (i = 0 ; i < 2 ; i++)
@@ -136,7 +138,7 @@ int stls_run (struct tls *ctx, int *fds, unsigned int verbosity, uint32 options,
unsigned int xlen = 0 ;
register int r ;
- tain_add_g(&deadline, buffer_isempty(&b[0].b) && buffer_isempty(&b[1].b) ? tto : &tain_infinite_relative) ;
+ tain_add_g(&deadline, fds[0] >= 0 && fds[1] >= 0 && buffer_isempty(&b[0].b) && buffer_isempty(&b[1].b) ? tto : &tain_infinite_relative) ;
/* poll() preparation */
@@ -165,7 +167,7 @@ int stls_run (struct tls *ctx, int *fds, unsigned int verbosity, uint32 options,
}
else xindex[2] = 4 ;
- if (fds[3] >= 0 && (!b[0].blockedonother && buffer_iswritable(&b[0].b) || closing))
+ if (fds[3] >= 0 && !b[0].blockedonother && buffer_iswritable(&b[0].b))
{
x[xlen].fd = fds[3] ;
x[xlen].events = IOPAUSE_WRITE ;
@@ -182,8 +184,8 @@ int stls_run (struct tls *ctx, int *fds, unsigned int verbosity, uint32 options,
if (r < 0) strerr_diefu1sys(111, "iopause") ;
else if (!r)
{
- fd_close(fds[0]) ;
- tls_close(ctx) ;
+ fd_close(fds[0]) ; fds[0] = -1 ;
+ closeit(ctx, fds, options & 1) ;
continue ;
}
@@ -204,6 +206,7 @@ int stls_run (struct tls *ctx, int *fds, unsigned int verbosity, uint32 options,
{
if (options & 1) shutdown(fds[2], SHUT_RD) ;
fd_close(fds[2]) ; fds[2] = -1 ;
+ xindex[2] = 4 ;
}
r = 1 ;
}
@@ -224,18 +227,7 @@ int stls_run (struct tls *ctx, int *fds, unsigned int verbosity, uint32 options,
strerr_warnwu2x("write to peer: ", tls_error(ctx)) ;
fd_close(fds[0]) ; fds[0] = -1 ;
}
- if (r)
- {
- if (closing && buffer_isempty(&b[0].b))
- {
- ndelay_off(fds[3]) ;
- tls_close(ctx) ;
- fd_close(fds[3]) ; fds[3] = -1 ;
- if (fds[0] >= 0) { fd_close(fds[0]) ; fds[0] = -1 ; }
- closing = 0 ;
- }
- else if (fds[0] < 0) closeit(ctx, fds, options & 1) ;
- }
+ if (r && fds[0] < 0) closeit(ctx, fds, options & 1) ;
}
@@ -261,12 +253,20 @@ int stls_run (struct tls *ctx, int *fds, unsigned int verbosity, uint32 options,
if (r < 0)
{
if (r == -1) strerr_warnwu2x("read from peer: ", tls_error(ctx)) ;
+ if (options & 1) shutdown(fds[2], SHUT_RD) ;
+ /*
+ XXX: We need a way to detect when we've received a close_notify,
+ because then we need to trigger a write and then shut the engine
+ down. This is orthogonal to options&1, it only means that the
+ peer sent a close_notify.
+ As for now, libtls doesn't offer an API to detect that, so we
+ do nothing special - we just wait until our app sends EOF.
+ */
fd_close(fds[2]) ; fds[2] = -1 ;
if (buffer_isempty(&b[1].b))
{
fd_close(fds[1]) ; fds[1] = -1 ;
}
- closing = 1 ;
}
}
}
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