diff options
Diffstat (limited to 'src/buffer.c')
-rw-r--r-- | src/buffer.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/buffer.c b/src/buffer.c index 7001eef0..5859e926 100644 --- a/src/buffer.c +++ b/src/buffer.c @@ -251,6 +251,44 @@ int ssh_buffer_add_data(struct ssh_buffer_struct *buffer, const void *data, uint /** * @internal * + * @brief Allocate space for data at the tail of a buffer. + * + * @param[in] buffer The buffer to add the data. + * + * @param[in] len The length of the data to add. + * + * @return Pointer on the allocated space + * NULL on error. + */ +void *ssh_buffer_allocate(struct ssh_buffer_struct *buffer, uint32_t len) +{ + void *ptr; + buffer_verify(buffer); + + if (buffer->used + len < len) { + return NULL; + } + + if (buffer->allocated < (buffer->used + len)) { + if (buffer->pos > 0) { + buffer_shift(buffer); + } + + if (realloc_buffer(buffer, buffer->used + len) < 0) { + return NULL; + } + } + + ptr = buffer->data + buffer->used; + buffer->used+=len; + buffer_verify(buffer); + + return ptr; +} + +/** + * @internal + * * @brief Add a SSH string to the tail of a buffer. * * @param[in] buffer The buffer to add the string. |