version 1.8, 2000/09/07 20:27:50 |
version 1.8.2.6, 2002/03/08 17:04:42 |
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#include "xmalloc.h" |
#include "xmalloc.h" |
#include "buffer.h" |
#include "buffer.h" |
#include "ssh.h" |
#include "log.h" |
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/* Initializes the buffer structure. */ |
/* Initializes the buffer structure. */ |
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/* Appends data to the buffer, expanding it if necessary. */ |
/* Appends data to the buffer, expanding it if necessary. */ |
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void |
void |
buffer_append(Buffer *buffer, const char *data, unsigned int len) |
buffer_append(Buffer *buffer, const void *data, u_int len) |
{ |
{ |
char *cp; |
void *p; |
buffer_append_space(buffer, &cp, len); |
p = buffer_append_space(buffer, len); |
memcpy(cp, data, len); |
memcpy(p, data, len); |
} |
} |
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/* |
/* |
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* to the allocated region. |
* to the allocated region. |
*/ |
*/ |
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void |
void * |
buffer_append_space(Buffer *buffer, char **datap, unsigned int len) |
buffer_append_space(Buffer *buffer, u_int len) |
{ |
{ |
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void *p; |
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/* If the buffer is empty, start using it from the beginning. */ |
/* If the buffer is empty, start using it from the beginning. */ |
if (buffer->offset == buffer->end) { |
if (buffer->offset == buffer->end) { |
buffer->offset = 0; |
buffer->offset = 0; |
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restart: |
restart: |
/* If there is enough space to store all data, store it now. */ |
/* If there is enough space to store all data, store it now. */ |
if (buffer->end + len < buffer->alloc) { |
if (buffer->end + len < buffer->alloc) { |
*datap = buffer->buf + buffer->end; |
p = buffer->buf + buffer->end; |
buffer->end += len; |
buffer->end += len; |
return; |
return p; |
} |
} |
/* |
/* |
* If the buffer is quite empty, but all data is at the end, move the |
* If the buffer is quite empty, but all data is at the end, move the |
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buffer->alloc += len + 32768; |
buffer->alloc += len + 32768; |
buffer->buf = xrealloc(buffer->buf, buffer->alloc); |
buffer->buf = xrealloc(buffer->buf, buffer->alloc); |
goto restart; |
goto restart; |
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/* NOTREACHED */ |
} |
} |
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/* Returns the number of bytes of data in the buffer. */ |
/* Returns the number of bytes of data in the buffer. */ |
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unsigned int |
u_int |
buffer_len(Buffer *buffer) |
buffer_len(Buffer *buffer) |
{ |
{ |
return buffer->end - buffer->offset; |
return buffer->end - buffer->offset; |
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/* Gets data from the beginning of the buffer. */ |
/* Gets data from the beginning of the buffer. */ |
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void |
void |
buffer_get(Buffer *buffer, char *buf, unsigned int len) |
buffer_get(Buffer *buffer, void *buf, u_int len) |
{ |
{ |
if (len > buffer->end - buffer->offset) |
if (len > buffer->end - buffer->offset) |
fatal("buffer_get: trying to get more bytes than in buffer"); |
fatal("buffer_get: trying to get more bytes %d than in buffer %d", |
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len, buffer->end - buffer->offset); |
memcpy(buf, buffer->buf + buffer->offset, len); |
memcpy(buf, buffer->buf + buffer->offset, len); |
buffer->offset += len; |
buffer->offset += len; |
} |
} |
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/* Consumes the given number of bytes from the beginning of the buffer. */ |
/* Consumes the given number of bytes from the beginning of the buffer. */ |
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void |
void |
buffer_consume(Buffer *buffer, unsigned int bytes) |
buffer_consume(Buffer *buffer, u_int bytes) |
{ |
{ |
if (bytes > buffer->end - buffer->offset) |
if (bytes > buffer->end - buffer->offset) |
fatal("buffer_consume: trying to get more bytes than in buffer"); |
fatal("buffer_consume: trying to get more bytes than in buffer"); |
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/* Consumes the given number of bytes from the end of the buffer. */ |
/* Consumes the given number of bytes from the end of the buffer. */ |
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void |
void |
buffer_consume_end(Buffer *buffer, unsigned int bytes) |
buffer_consume_end(Buffer *buffer, u_int bytes) |
{ |
{ |
if (bytes > buffer->end - buffer->offset) |
if (bytes > buffer->end - buffer->offset) |
fatal("buffer_consume_end: trying to get more bytes than in buffer"); |
fatal("buffer_consume_end: trying to get more bytes than in buffer"); |
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/* Returns a pointer to the first used byte in the buffer. */ |
/* Returns a pointer to the first used byte in the buffer. */ |
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char * |
void * |
buffer_ptr(Buffer *buffer) |
buffer_ptr(Buffer *buffer) |
{ |
{ |
return buffer->buf + buffer->offset; |
return buffer->buf + buffer->offset; |
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buffer_dump(Buffer *buffer) |
buffer_dump(Buffer *buffer) |
{ |
{ |
int i; |
int i; |
unsigned char *ucp = (unsigned char *) buffer->buf; |
u_char *ucp = buffer->buf; |
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for (i = buffer->offset; i < buffer->end; i++) |
for (i = buffer->offset; i < buffer->end; i++) { |
fprintf(stderr, " %02x", ucp[i]); |
fprintf(stderr, "%02x", ucp[i]); |
fprintf(stderr, "\n"); |
if ((i-buffer->offset)%16==15) |
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fprintf(stderr, "\r\n"); |
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else if ((i-buffer->offset)%2==1) |
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fprintf(stderr, " "); |
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} |
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fprintf(stderr, "\r\n"); |
} |
} |