Copyright © 2001 - 2002 SILC Project SILC Project Website | SILC Toolkit Reference Manual Index

SILC Toolkit Reference Manual SILC Core Library SILC Authentication Interface SILC Message Interface SILC Channel Interface SILC Command Interface SILC Notify Interface SILC Status Types SILC Modes SILC ID Interface SILC ID Cache Interface SILC Argument Interface SILC Attributes Interface Packet Protocol Interface SILC Math Library SILC MP Interface SILC Math Interface SILC SFTP Library SILC SFTP Interface SFTP Filesystems Interface SILC Utility Library Basic SILC Types SILC Buffer Interface SILC Buffer Format Interface SILC Hash Table Interface SILC Logging Interface SILC Memory Interface SILC Mutex Interface SILC Thread Interface SILC Network Interface SILC Schedule Interface SILC Socket Interface SILC Protocol Interface SILC Config Interface SILC File Util Interface SILC String Util Interface SILC Util Interface SILC List Interface SILC Dynamic List Interface SILC VCard Interface SILC Application Utilities SILC Key Exchange Library SILC SKE Interface SKE Status Types SKE Diffie Hellman Groups SKE Payloads SILC Client Library Using SILC Client Library Tutorial Arguments for command_reply Client Operation Arguments for notify Client Operation Client Library Interface Reference SILC Crypto Library Introduction to SILC RNG SILC RNG Interface SILC Cipher API SILC PKCS API SILC Hash Interface SILC HMAC Interface Resource Links SILC Project Website SILC Protocol Documentation SILC White Paper SILC FAQ
Structure SilcBuffer NAME
        typedef struct { ... } *SilcBuffer, SilcBufferStruct;
DESCRIPTION
        SILC Buffer object. Following short description of the fields
        of the buffer.
EXAMPLE
        SilcUInt32 truelen;

            True length of the buffer. This is set at the allocation of the
            buffer and it should not be touched after that. This field should
            be considered read-only.

        SilcUInt32 len;

            Length of the currently valid data area. Tells the length of the
            data at the buffer. This is set to zero at the allocation of the
            buffer and should not be updated by hand. Method functions of the
            buffer automatically updates this field. However, it is not
            read-only field and can be updated manually if necessary.

        unsiged char *head;

            Head of the allocated buffer. This is the start of the allocated
            data area and remains as same throughout the lifetime of the buffer.
            However, the end of the head area or the start of the currently valid
            data area is variable.

            --------------------------------
            | head  | data         | tail  |
            --------------------------------
            ^       ^

            Current head section in the buffer is sb->data - sb->head.

        unsigned char *data;

            Currently valid data area. This is the start of the currently valid
            main data area. The data area is variable in all directions.

            --------------------------------
            | head  | data         | tail  |
            --------------------------------
                    ^              ^

            Current valid data area in the buffer is sb->tail - sb->data.

         unsigned char *tail;

            Tail of the buffer. This is the end of the currently valid data area
            or start of the tail area. The start of the tail area is variable.

            --------------------------------
            | head  | data         | tail  |
            --------------------------------
                                   ^       ^

            Current tail section in the buffer is sb->end - sb->tail.

        unsigned char *end;

            End of the allocated buffer. This is the end of the allocated data
            area and remains as same throughout the lifetime of the buffer.
            Usually this field is not needed except when checking the size
            of the buffer.

            --------------------------------
            | head  | data         | tail  |
            --------------------------------
                                           ^

            Length of the entire buffer is (ie. truelen) sb->end - sb->head.

         Currently valid data area is considered to be the main data area in
         the buffer. However, the entire buffer is of course valid data and can
         be used as such. Usually head section of the buffer includes different
         kind of headers or similar. Data section includes the main data of
         the buffer. Tail section can be seen as a reserve space of the data
         section. Tail section can be pulled towards end, and thus the data
         section becomes larger.
SOURCE
        typedef struct {
          SilcUInt32 truelen;
          SilcUInt32 len;
          unsigned char *head;
          unsigned char *data;
          unsigned char *tail;
          unsigned char *end;
        } *SilcBuffer, SilcBufferStruct;
SILC Buffer Interface SilcBuffer SILC_BUFFER_END silc_buffer_alloc silc_buffer_free silc_buffer_steal silc_buffer_set silc_buffer_pull silc_buffer_push silc_buffer_pull_tail silc_buffer_push_tail silc_buffer_put_head silc_buffer_put silc_buffer_put_tail silc_buffer_alloc_size silc_buffer_clear silc_buffer_copy silc_buffer_clone silc_buffer_realloc

Copyright © 2001 - 2002 SILC Project SILC Project Website | SILC Toolkit Reference Manual Index