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/** \ingroup rpmio
* \file lib/rpmgi.c
*/
#include "system.h"
#include <errno.h>
#include <rpm/rpmtypes.h>
#include <rpm/rpmlib.h> /* rpmReadPackageFile */
#include <rpm/rpmts.h>
#include <rpm/rpmmacro.h> /* XXX rpmExpand */
#include <rpm/rpmfileutil.h>
#include <rpm/rpmlog.h>
#include "lib/rpmgi.h"
#include "lib/manifest.h"
#include "debug.h"
RPM_GNUC_INTERNAL
rpmgiFlags giFlags = RPMGI_NONE;
/** \ingroup rpmgi
*/
struct rpmgi_s {
rpmts ts; /*!< Iterator transaction set. */
rpmgiFlags flags; /*!< Iterator control bits. */
int i; /*!< Element index. */
int errors;
ARGV_t argv;
int argc;
};
/**
* Open a file after macro expanding path.
* @todo There are two error messages printed on header, then manifest failures.
* @param path file path
* @param fmode open mode
* @return file handle
*/
static FD_t rpmgiOpen(const char * path, const char * fmode)
{
char * fn = rpmExpand(path, NULL);
FD_t fd = Fopen(fn, fmode);
if (fd == NULL || Ferror(fd)) {
rpmlog(RPMLOG_ERR, _("open of %s failed: %s\n"), fn, Fstrerror(fd));
if (fd != NULL) (void) Fclose(fd);
fd = NULL;
}
free(fn);
return fd;
}
/**
* Load manifest into iterator arg list.
* @param gi generalized iterator
* @param path file path
* @return RPMRC_OK on success
*/
static rpmRC rpmgiLoadManifest(rpmgi gi, const char * path)
{
FD_t fd = rpmgiOpen(path, "r.ufdio");
rpmRC rpmrc = RPMRC_FAIL;
if (fd != NULL) {
rpmrc = rpmReadPackageManifest(fd, &gi->argc, &gi->argv);
(void) Fclose(fd);
}
return rpmrc;
}
/**
* Return header from package.
* @param gi generalized iterator
* @param path file path
* @retval hdrp header (NULL on failure)
* @return 1 if path could be opened, 0 if not
*/
static int rpmgiReadHeader(rpmgi gi, const char * path, Header * hdrp)
{
FD_t fd = rpmgiOpen(path, "r.ufdio");
Header h = NULL;
if (fd != NULL) {
/* XXX what if path needs expansion? */
rpmRC rpmrc = rpmReadPackageFile(gi->ts, fd, path, &h);
(void) Fclose(fd);
switch (rpmrc) {
case RPMRC_NOTFOUND:
/* XXX Read a package manifest. Restart ftswalk on success. */
case RPMRC_FAIL:
default:
h = headerFree(h);
break;
case RPMRC_NOTTRUSTED:
case RPMRC_NOKEY:
case RPMRC_OK:
break;
}
}
*hdrp = h;
return (fd != NULL);
}
/**
* Read next header from package, lazily expanding manifests as found.
* @todo An empty file read as manifest truncates argv returning RPMRC_NOTFOUND.
* @todo Chained manifests lose an arg someplace.
* @param gi generalized iterator
* @return header on success
*/
static Header rpmgiLoadReadHeader(rpmgi gi)
{
Header h = NULL;
if (gi->argv != NULL && gi->argv[gi->i] != NULL)
do {
char * fn = gi->argv[gi->i];
int rc = rpmgiReadHeader(gi, fn, &h);
if (h != NULL || (gi->flags & RPMGI_NOMANIFEST) || rc == 0)
break;
/* Not a header, so try for a manifest. */
gi->argv[gi->i] = NULL; /* Mark the insertion point */
if (rpmgiLoadManifest(gi, fn) != RPMRC_OK) {
gi->argv[gi->i] = fn; /* Manifest failed, restore fn */
rpmlog(RPMLOG_ERR,
_("%s: not an rpm package (or package manifest)\n"), fn);
break;
}
fn = _free(fn);
} while (1);
return h;
}
/**
* Append globbed arg list to iterator.
* @param gi generalized iterator
* @param argv arg list to be globbed (or NULL)
*/
static void rpmgiGlobArgv(rpmgi gi, ARGV_const_t argv)
{
if (argv == NULL) return;
/* XXX Expand globs only if requested */
if ((gi->flags & RPMGI_NOGLOB)) {
argvAppend(&gi->argv, argv);
} else {
const char * arg;
while ((arg = *argv++) != NULL) {
char * t = rpmEscapeSpaces(arg);
char ** av = NULL;
if (rpmGlob(t, NULL, &av) == 0) {
argvAppend(&gi->argv, av);
argvFree(av);
}
free(t);
}
}
gi->argc = argvCount(gi->argv);
return;
}
rpmgi rpmgiFree(rpmgi gi)
{
if (gi != NULL) {
rpmtsFree(gi->ts);
argvFree(gi->argv);
memset(gi, 0, sizeof(*gi)); /* XXX trash and burn */
free(gi);
}
return NULL;
}
rpmgi rpmgiNew(rpmts ts, rpmgiFlags flags, ARGV_const_t argv)
{
rpmgi gi = xcalloc(1, sizeof(*gi));
gi->ts = rpmtsLink(ts);
gi->flags = flags;
gi->i = -1;
gi->errors = 0;
gi->flags = flags;
gi->argv = argvNew();
gi->argc = 0;
rpmgiGlobArgv(gi, argv);
return gi;
}
Header rpmgiNext(rpmgi gi)
{
Header h = NULL;
if (gi != NULL && ++gi->i >= 0) {
/*
* Read next header, lazily expanding manifests as found,
* count + skip errors.
*/
while (gi->i < gi->argc) {
if ((h = rpmgiLoadReadHeader(gi)) != NULL)
break;
gi->errors++;
gi->i++;
}
/* Out of things to try, end of iteration */
if (h == NULL)
gi->i = -1;
}
return h;
}
int rpmgiNumErrors(rpmgi gi)
{
return (gi != NULL ? gi->errors : -1);
}
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