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/** \ingroup lead
* \file lib/rpmlead.c
*/
#include "system.h"
#if HAVE_MACHINE_TYPES_H
# include <machine/types.h>
#endif
#include <netinet/in.h>
#include <rpmlib.h>
#include "signature.h"
#include "rpmlead.h"
#include "debug.h"
/*@unchecked@*/ /*@observer@*/
static unsigned char lead_magic[] = {
RPMLEAD_MAGIC0, RPMLEAD_MAGIC1, RPMLEAD_MAGIC2, RPMLEAD_MAGIC3
};
/* The lead needs to be 8 byte aligned */
rpmRC writeLead(FD_t fd, const struct rpmlead *lead)
{
struct rpmlead l;
/*@-boundswrite@*/
memcpy(&l, lead, sizeof(l));
memcpy(&l.magic, lead_magic, sizeof(l.magic));
/*@=boundswrite@*/
l.type = htons(l.type);
l.archnum = htons(l.archnum);
l.osnum = htons(l.osnum);
l.signature_type = htons(l.signature_type);
/*@-boundswrite@*/
if (Fwrite(&l, 1, sizeof(l), fd) != sizeof(l))
return RPMRC_FAIL;
/*@=boundswrite@*/
return RPMRC_OK;
}
rpmRC readLead(FD_t fd, struct rpmlead *lead)
{
/*@-boundswrite@*/
memset(lead, 0, sizeof(*lead));
/*@=boundswrite@*/
/*@-type@*/ /* FIX: remove timed read */
if (timedRead(fd, (char *)lead, sizeof(*lead)) != sizeof(*lead)) {
if (Ferror(fd)) {
rpmError(RPMERR_READ, _("read failed: %s (%d)\n"),
Fstrerror(fd), errno);
return RPMRC_FAIL;
}
return RPMRC_NOTFOUND;
}
/*@=type@*/
if (memcmp(lead->magic, lead_magic, sizeof(lead_magic)))
return RPMRC_NOTFOUND;
lead->type = ntohs(lead->type);
lead->archnum = ntohs(lead->archnum);
lead->osnum = ntohs(lead->osnum);
lead->signature_type = ntohs(lead->signature_type);
if (lead->signature_type != RPMSIGTYPE_HEADERSIG)
return RPMRC_NOTFOUND;
return RPMRC_OK;
}
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