Use unsigned values for length in buffer functions.

git-svn-id: svn+ssh://svn.berlios.de/svnroot/repos/libssh/trunk@211 7dcaeef0-15fb-0310-b436-a5af3365683c

include/libssh/libssh.h

@@ -315,7 +315,7 @@ void buffer_free(BUFFER *buffer);
 /* buffer_get returns a pointer to the begining of the buffer. no position is taken into account */
 void *buffer_get(BUFFER *buffer);
 /* same here */
-int buffer_get_len(BUFFER *buffer);
+u32 buffer_get_len(BUFFER *buffer);
 
 
 /* in auth.c */

include/libssh/priv.h

@@ -592,7 +592,7 @@ void buffer_reinit(BUFFER *buffer);
 /* buffer_get_rest returns a pointer to the current position into the buffer */
 void *buffer_get_rest(BUFFER *buffer);
 /* buffer_get_rest_len returns the number of bytes which can be read */
-int buffer_get_rest_len(BUFFER *buffer);
+u32 buffer_get_rest_len(BUFFER *buffer);
 
 /* buffer_read_*() returns the number of bytes read, except for ssh strings */
 int buffer_get_u8(BUFFER *buffer,u8 *data);
@@ -605,8 +605,8 @@ STRING *buffer_get_ssh_string(BUFFER *buffer);
 /* gets a string out of a SSH-1 mpint */
 STRING *buffer_get_mpint(BUFFER *buffer);
 /* buffer_pass_bytes acts as if len bytes have been read (used for padding) */
-int buffer_pass_bytes_end(BUFFER *buffer, u32 len);
-int buffer_pass_bytes(BUFFER *buffer, u32 len);
+u32 buffer_pass_bytes_end(BUFFER *buffer, u32 len);
+u32 buffer_pass_bytes(BUFFER *buffer, u32 len);
 
 /* in base64.c */
 BUFFER *base64_to_bin(char *source);

libssh/buffer.c

@@ -174,7 +174,7 @@ void *buffer_get_rest(BUFFER *buffer){
  * \return length of the buffer
  * \see buffer_get()
  */
-int buffer_get_len(BUFFER *buffer){
+u32 buffer_get_len(BUFFER *buffer){
     return buffer->used;
 }
 
@@ -184,7 +184,7 @@ int buffer_get_len(BUFFER *buffer){
  * \return length of the buffer
  * \see buffer_get_rest()
  */
-int buffer_get_rest_len(BUFFER *buffer){
+u32 buffer_get_rest_len(BUFFER *buffer){
     return buffer->used - buffer->pos;
 }
 
@@ -195,7 +195,7 @@ int buffer_get_rest_len(BUFFER *buffer){
  * \param len number of bytes to eat
  * \return new size of the buffer
  */
-int buffer_pass_bytes(BUFFER *buffer, u32 len){
+u32 buffer_pass_bytes(BUFFER *buffer, u32 len){
     if(buffer->used < buffer->pos+len)
         return 0;
     buffer->pos+=len;
@@ -213,7 +213,7 @@ int buffer_pass_bytes(BUFFER *buffer, u32 len){
  * \param len number of bytes to remove from tail
  * \return new size of the buffer
  */
-int buffer_pass_bytes_end(BUFFER *buffer, u32 len){
+u32 buffer_pass_bytes_end(BUFFER *buffer, u32 len){
     if(buffer->used < buffer->pos + len)
         return 0;
     buffer->used-=len;