From f0191939521e8f2e20a5ae671dd4bee01778a481 Mon Sep 17 00:00:00 2001
From: phani <phanikishoreg@gwu.edu>
Date: Tue, 24 Dec 2019 17:19:01 -0500
Subject: [PATCH] read() to read from request body!

---
 runtime/include/types.h    |  2 +-
 runtime/src/libc/uvio.c    | 14 +++++++++++++-
 runtime/tests/Makefile     |  3 ++-
 runtime/tests/empty/main.c |  3 +++
 4 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/runtime/include/types.h b/runtime/include/types.h
index 72c6c76..d33e681 100644
--- a/runtime/include/types.h
+++ b/runtime/include/types.h
@@ -153,7 +153,7 @@ typedef enum {
 #define MOD_REQ_RESP_DEFAULT (PAGE_SIZE)
 #define QUIESCENSE_TIME (1<<20) //cycles!
 
-#define HTTP_HEADERS_MAX     4
+#define HTTP_HEADERS_MAX     6
 #define HTTP_HEADER_MAXSZ    32
 #define HTTP_HEADERVAL_MAXSZ 64
 
diff --git a/runtime/src/libc/uvio.c b/runtime/src/libc/uvio.c
index c834d0c..aa4d314 100644
--- a/runtime/src/libc/uvio.c
+++ b/runtime/src/libc/uvio.c
@@ -63,8 +63,20 @@ u32
 wasm_read(i32 filedes, i32 buf_offset, i32 nbyte)
 {
 	if (filedes == 0) {
+#ifdef STANDALONE
 		char* buf = get_memory_ptr_void(buf_offset, nbyte);
 		return read(filedes, buf, nbyte);
+#else
+		// TODO: multiple reads!
+		char* buf = get_memory_ptr_void(buf_offset, nbyte);
+                struct sandbox *s = sandbox_current();
+                struct http_request *r = &s->rqi;
+                if (r->bodylen <= 0) return 0;
+		int l = nbyte > r->bodylen ? r->bodylen : nbyte;
+		memcpy(buf, r->body, l);
+		r->bodylen -= l;
+                return l;
+#endif
 	}
 	int f = io_handle_fd(filedes);
 	// TODO: read on other file types
@@ -460,7 +472,7 @@ wasm_readv(i32 fd, i32 iov_offset, i32 iovcnt)
 		struct http_request *r = &s->rqi;
 		if (r->bodylen <= 0) return 0;
 		for (int i = 0; i < iovcnt; i++) {
-			int l = iov[i].len > r->body_len ? r->body_len : iov[i].len;
+			int l = iov[i].len > r->bodylen ? r->bodylen : iov[i].len;
 			if (l <= 0) break;
 			char *b = get_memory_ptr_void(iov[i].base_offset, iov[i].len);
 			//http request body!
diff --git a/runtime/tests/Makefile b/runtime/tests/Makefile
index ea04b66..6f15fbb 100644
--- a/runtime/tests/Makefile
+++ b/runtime/tests/Makefile
@@ -2,7 +2,8 @@ include Makefile.inc
 
 BENCH_DIR=../../silverfish/code_benches/
 
-TESTS=forever filesys sockserver sockclient empty
+TESTS=empty
+#TESTS=forever filesys sockserver sockclient empty
 TESTSRT=$(TESTS:%=%_rt)
 BENCHES=adpcm basic_math binarytrees bitcount blowfish crc dijkstra fft function_pointers \
         gsm libjpeg mandelbrot patricia pgp qsort rsynth sha sqlite stringsearch susan
diff --git a/runtime/tests/empty/main.c b/runtime/tests/empty/main.c
index bda853b..7a57e3f 100644
--- a/runtime/tests/empty/main.c
+++ b/runtime/tests/empty/main.c
@@ -6,5 +6,8 @@ int
 main(int argc, char **argv)
 {
 	printf("hello\n");
+//	char d[16] = { 0 };
+//	int r = read(0, d, 15);
+//	printf("hello [%s]\n", d);
 	return 0;
 }