smart: typedef git_pkt_type and clarify recv_pkt return type

(cherry picked from commit 08961c9d)

src/transports/smart.h

@@ -28,7 +28,7 @@
 
 extern bool git_smart__ofs_delta_enabled;
 
-enum git_pkt_type {
+typedef enum {
 	GIT_PKT_CMD,
 	GIT_PKT_FLUSH,
 	GIT_PKT_REF,
@@ -43,7 +43,7 @@ enum git_pkt_type {
 	GIT_PKT_OK,
 	GIT_PKT_NG,
 	GIT_PKT_UNPACK,
-};
+} git_pkt_type;
 
 /* Used for multi_ack and mutli_ack_detailed */
 enum git_ack_status {
@@ -55,11 +55,11 @@ enum git_ack_status {
 
 /* This would be a flush pkt */
 typedef struct {
-	enum git_pkt_type type;
+	git_pkt_type type;
 } git_pkt;
 
 struct git_pkt_cmd {
-	enum git_pkt_type type;
+	git_pkt_type type;
 	char *cmd;
 	char *path;
 	char *host;
@@ -67,25 +67,25 @@ struct git_pkt_cmd {
 
 /* This is a pkt-line with some info in it */
 typedef struct {
-	enum git_pkt_type type;
+	git_pkt_type type;
 	git_remote_head head;
 	char *capabilities;
 } git_pkt_ref;
 
 /* Useful later */
 typedef struct {
-	enum git_pkt_type type;
+	git_pkt_type type;
 	git_oid oid;
 	enum git_ack_status status;
 } git_pkt_ack;
 
 typedef struct {
-	enum git_pkt_type type;
+	git_pkt_type type;
 	char comment[GIT_FLEX_ARRAY];
 } git_pkt_comment;
 
 typedef struct {
-	enum git_pkt_type type;
+	git_pkt_type type;
 	int len;
 	char data[GIT_FLEX_ARRAY];
 } git_pkt_data;
@@ -93,24 +93,24 @@ typedef struct {
 typedef git_pkt_data git_pkt_progress;
 
 typedef struct {
-	enum git_pkt_type type;
+	git_pkt_type type;
 	int len;
 	char error[GIT_FLEX_ARRAY];
 } git_pkt_err;
 
 typedef struct {
-	enum git_pkt_type type;
+	git_pkt_type type;
 	char *ref;
 } git_pkt_ok;
 
 typedef struct {
-	enum git_pkt_type type;
+	git_pkt_type type;
 	char *ref;
 	char *msg;
 } git_pkt_ng;
 
 typedef struct {
-	enum git_pkt_type type;
+	git_pkt_type type;
 	int unpack_ok;
 } git_pkt_unpack;
 

src/transports/smart_protocol.c

@@ -206,11 +206,11 @@ int git_smart__detect_caps(git_pkt_ref *pkt, transport_smart_caps *caps, git_vec
 	return 0;
 }
 
-static int recv_pkt(git_pkt **out, gitno_buffer *buf)
+static int recv_pkt(git_pkt **out, git_pkt_type *pkt_type, gitno_buffer *buf)
 {
 	const char *ptr = buf->data, *line_end = ptr;
 	git_pkt *pkt = NULL;
-	int pkt_type, error = 0, ret;
+	int error = 0, ret;
 
 	do {
 		if (buf->offset > 0)
@@ -233,13 +233,14 @@ static int recv_pkt(git_pkt **out, gitno_buffer *buf)
 	} while (error);
 
 	gitno_consume(buf, line_end);
-	pkt_type = pkt->type;
+	if (pkt_type)
+		*pkt_type = pkt->type;
 	if (out != NULL)
 		*out = pkt;
 	else
 		git__free(pkt);
 
-	return pkt_type;
+	return error;
 }
 
 static int store_common(transport_smart *t)
@@ -249,7 +250,7 @@ static int store_common(transport_smart *t)
 	int error;
 
 	do {
-		if ((error = recv_pkt(&pkt, buf)) < 0)
+		if ((error = recv_pkt(&pkt, NULL, buf)) < 0)
 			return error;
 
 		if (pkt->type == GIT_PKT_ACK) {
@@ -317,7 +318,7 @@ static int wait_while_ack(gitno_buffer *buf)
 	while (1) {
 		git__free(pkt);
 
-		if ((error = recv_pkt((git_pkt **)&pkt, buf)) < 0)
+		if ((error = recv_pkt((git_pkt **)&pkt, NULL, buf)) < 0)
 			return error;
 
 		if (pkt->type == GIT_PKT_NAK)
@@ -342,7 +343,8 @@ int git_smart__negotiate_fetch(git_transport *transport, git_repository *repo, c
 	gitno_buffer *buf = &t->buffer;
 	git_buf data = GIT_BUF_INIT;
 	git_revwalk *walk = NULL;
-	int error = -1, pkt_type;
+	int error = -1;
+	git_pkt_type pkt_type;
 	unsigned int i;
 	git_oid oid;
 
@@ -392,16 +394,13 @@ int git_smart__negotiate_fetch(git_transport *transport, git_repository *repo, c
 				if ((error = store_common(t)) < 0)
 					goto on_error;
 			} else {
-				pkt_type = recv_pkt(NULL, buf);
-
-				if (pkt_type == GIT_PKT_ACK) {
+				error = recv_pkt(NULL, &pkt_type, buf);
+				if (error < 0) {
+					goto on_error;
+				} else if (pkt_type == GIT_PKT_ACK) {
 					break;
 				} else if (pkt_type == GIT_PKT_NAK) {
 					continue;
-				} else if (pkt_type < 0) {
-					/* recv_pkt returned an error */
-					error = pkt_type;
-					goto on_error;
 				} else {
 					giterr_set(GITERR_NET, "Unexpected pkt type");
 					error = -1;
@@ -467,10 +466,10 @@ int git_smart__negotiate_fetch(git_transport *transport, git_repository *repo, c
 
 	/* Now let's eat up whatever the server gives us */
 	if (!t->caps.multi_ack && !t->caps.multi_ack_detailed) {
-		pkt_type = recv_pkt(NULL, buf);
+		error = recv_pkt(NULL, &pkt_type, buf);
 
-		if (pkt_type < 0) {
-			return pkt_type;
+		if (error < 0) {
+			return error;
 		} else if (pkt_type != GIT_PKT_ACK && pkt_type != GIT_PKT_NAK) {
 			giterr_set(GITERR_NET, "Unexpected pkt type");
 			return -1;
@@ -591,7 +590,7 @@ int git_smart__download_pack(
 			goto done;
 		}
 
-		if ((error = recv_pkt(&pkt, buf)) >= 0) {
+		if ((error = recv_pkt(&pkt, NULL, buf)) >= 0) {
 			/* Check cancellation after network call */
 			if (t->cancelled.val) {
 				giterr_clear();