char *
guestfs__file_architecture (guestfs_h *g, const char *path)
{
CLEANUP_FREE char *file = NULL;
CLEANUP_FREE char *elf_arch = NULL;
char *ret = NULL;
/* Get the output of the "file" command. Note that because this
* runs in the daemon, LANG=C so it's in English.
*/
file = guestfs_file (g, path);
if (file == NULL)
return NULL;
if ((elf_arch = match1 (g, file, re_file_elf)) != NULL)
ret = canonical_elf_arch (g, elf_arch);
else if (strstr (file, "PE32 executable"))
ret = safe_strdup (g, "i386");
else if (strstr (file, "PE32+ executable"))
ret = safe_strdup (g, "x86_64");
else if (strstr (file, "cpio archive"))
ret = cpio_arch (g, file, path);
else
error (g, "file_architecture: unknown architecture: %s", path);
return ret; /* caller frees */
}
static char *
icon_cirros (guestfs_h *g, struct inspect_fs *fs, size_t *size_r)
{
char *ret = NOT_FOUND;
char *type = NULL;
char *local = NULL;
char *pngfile = NULL;
struct command *cmd;
int r;
r = guestfs_exists (g, CIRROS_LOGO);
if (r == -1) {
ret = NULL; /* a real error */
goto out;
}
if (r == 0) goto out;
/* Check the file type and geometry. */
type = guestfs_file (g, CIRROS_LOGO);
if (!type) goto out;
if (!STRPREFIX (type, "ASCII text")) goto out;
local = guestfs___download_to_tmp (g, fs, CIRROS_LOGO, "icon", 1024);
if (!local) goto out;
/* Use pbmtext to render it. */
pngfile = safe_asprintf (g, "%s/cirros.png", g->tmpdir);
cmd = guestfs___new_command (g);
guestfs___cmd_add_string_unquoted (cmd, PBMTEXT " < ");
guestfs___cmd_add_string_quoted (cmd, local);
guestfs___cmd_add_string_unquoted (cmd, " | " PNMTOPNG " > ");
guestfs___cmd_add_string_quoted (cmd, pngfile);
r = guestfs___cmd_run (cmd);
guestfs___cmd_close (cmd);
if (r == -1)
goto out;
if (!WIFEXITED (r) || WEXITSTATUS (r) != 0)
goto out;
/* Read it into memory. */
if (read_whole_file (g, pngfile, &ret, size_r) == -1) {
ret = NULL;
goto out;
}
out:
free (pngfile);
free (local);
free (type);
return ret;
}
/* Check that the named file 'filename' is a PNG file and is reasonable.
* If it is, download and return it.
*/
static char *
get_png (guestfs_h *g, struct inspect_fs *fs, const char *filename,
size_t *size_r, size_t max_size)
{
char *ret;
CLEANUP_FREE char *real = NULL;
CLEANUP_FREE char *type = NULL;
CLEANUP_FREE char *local = NULL;
int r, w, h;
r = guestfs_is_file_opts (g, filename,
GUESTFS_IS_FILE_OPTS_FOLLOWSYMLINKS, 1, -1);
if (r == -1)
return NULL; /* a real error */
if (r == 0)
return NOT_FOUND;
/* Resolve the path, in case it's a symbolic link (as in RHEL 7). */
guestfs_push_error_handler (g, NULL, NULL);
real = guestfs_realpath (g, filename);
guestfs_pop_error_handler (g);
if (real == NULL)
return NOT_FOUND; /* could just be a broken link */
/* Check the file type and geometry. */
type = guestfs_file (g, real);
if (!type)
return NOT_FOUND;
if (!STRPREFIX (type, "PNG image data, "))
return NOT_FOUND;
if (sscanf (&type[16], "%d x %d", &w, &h) != 2)
return NOT_FOUND;
if (w < 16 || h < 16 || w > 1024 || h > 1024)
return NOT_FOUND;
/* Define a maximum reasonable size based on the geometry. This
* also limits the maximum we allocate below to around 4 MB.
*/
if (max_size == 0)
max_size = 4 * w * h;
local = guestfs___download_to_tmp (g, fs, real, "icon", max_size);
if (!local)
return NOT_FOUND;
/* Successfully passed checks and downloaded. Read it into memory. */
if (read_whole_file (g, local, &ret, size_r) == -1)
return NULL;
return ret;
}
static char *
icon_cirros (guestfs_h *g, struct inspect_fs *fs, size_t *size_r)
{
char *ret;
CLEANUP_FREE char *type = NULL;
CLEANUP_FREE char *local = NULL;
CLEANUP_FREE char *pngfile = NULL;
CLEANUP_CMD_CLOSE struct command *cmd = guestfs___new_command (g);
int r;
r = guestfs_is_file_opts (g, CIRROS_LOGO,
GUESTFS_IS_FILE_OPTS_FOLLOWSYMLINKS, 1, -1);
if (r == -1)
return NULL; /* a real error */
if (r == 0)
return NOT_FOUND;
/* Check the file type and geometry. */
type = guestfs_file (g, CIRROS_LOGO);
if (!type)
return NOT_FOUND;
if (!STRPREFIX (type, "ASCII text"))
return NOT_FOUND;
local = guestfs___download_to_tmp (g, fs, CIRROS_LOGO, "icon", 1024);
if (!local)
return NOT_FOUND;
/* Use pbmtext to render it. */
pngfile = safe_asprintf (g, "%s/cirros.png", g->tmpdir);
guestfs___cmd_add_string_unquoted (cmd, PBMTEXT " < ");
guestfs___cmd_add_string_quoted (cmd, local);
guestfs___cmd_add_string_unquoted (cmd, " | " PNMTOPNG " > ");
guestfs___cmd_add_string_quoted (cmd, pngfile);
r = guestfs___cmd_run (cmd);
if (r == -1)
return NOT_FOUND;
if (!WIFEXITED (r) || WEXITSTATUS (r) != 0)
return NOT_FOUND;
/* Read it into memory. */
if (read_whole_file (g, pngfile, &ret, size_r) == -1)
return NULL;
return ret;
}
/* Check that the named file 'filename' is a PNG file and is reasonable.
* If it is, download and return it.
*/
static char *
get_png (guestfs_h *g, struct inspect_fs *fs, const char *filename,
size_t *size_r, size_t max_size)
{
char *ret = NOT_FOUND;
char *type = NULL;
char *local = NULL;
int r, w, h;
r = guestfs_exists (g, filename);
if (r == -1) {
ret = NULL; /* a real error */
goto out;
}
if (r == 0) goto out;
/* Check the file type and geometry. */
type = guestfs_file (g, filename);
if (!type) goto out;
if (!STRPREFIX (type, "PNG image data, ")) goto out;
if (sscanf (&type[16], "%d x %d", &w, &h) != 2) goto out;
if (w < 16 || h < 16 || w > 1024 || h > 1024) goto out;
/* Define a maximum reasonable size based on the geometry. This
* also limits the maximum we allocate below to around 4 MB.
*/
if (max_size == 0)
max_size = 4 * w * h;
local = guestfs___download_to_tmp (g, fs, filename, "icon", max_size);
if (!local) goto out;
/* Successfully passed checks and downloaded. Read it into memory. */
if (read_whole_file (g, local, &ret, size_r) == -1) {
ret = NULL;
goto out;
}
out:
free (local);
free (type);
return ret;
}
