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/* Part of libhgfs - (c) 2009, D.C. van Moolenbroek */
#include "inc.h"
#include <limits.h>
/*===========================================================================*
* path_put *
*===========================================================================*/
void path_put(const char *path)
{
/* Append the given path name in HGFS format to the RPC buffer. Truncate it
* if it is longer than PATH_MAX bytes.
*/
const char *p;
char buf[PATH_MAX];
unsigned int len;
/* No leading slashes are allowed. */
for (p = path; *p == '/'; p++);
/* No double or tailing slashes, either. */
for (len = 0; *p && len < sizeof(buf) - 1; len++) {
if (*p == '/') {
for (p++; *p == '/'; p++);
if (!*p) break;
buf[len] = 0;
}
else buf[len] = *p++;
}
RPC_NEXT32 = len;
memcpy(RPC_PTR, buf, len);
RPC_ADVANCE(len);
RPC_NEXT8 = 0;
}
/*===========================================================================*
* path_get *
*===========================================================================*/
int path_get(char *path, int max)
{
/* Retrieve a HGFS formatted path name from the RPC buffer. Returns EINVAL if
* the path name is invalid. Returns ENAMETOOLONG if the path name is too
* long. Returns OK on success.
*/
char *p, *q;
int n, len;
n = len = RPC_NEXT32;
if (len >= max) return ENAMETOOLONG;
for (p = path, q = RPC_PTR; n--; p++, q++) {
/* We can not deal with a slash in a path component. */
if (*q == '/') return EINVAL;
if (*q == 0) *p = '/';
else *p = *q;
}
RPC_ADVANCE(len);
*p = 0;
return (RPC_NEXT8 != 0) ? EINVAL : OK;
}
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