diff options
Diffstat (limited to 'src/vfs/sfs')
| -rw-r--r-- | src/vfs/sfs/Makefile.am | 16 | ||||
| -rw-r--r-- | src/vfs/sfs/Makefile.in | 794 | ||||
| -rw-r--r-- | src/vfs/sfs/sfs.c | 604 | ||||
| -rw-r--r-- | src/vfs/sfs/sfs.h | 18 | ||||
| -rw-r--r-- | src/vfs/sfs/sfs.ini | 34 |
5 files changed, 1466 insertions, 0 deletions
diff --git a/src/vfs/sfs/Makefile.am b/src/vfs/sfs/Makefile.am new file mode 100644 index 0000000..7de97d0 --- /dev/null +++ b/src/vfs/sfs/Makefile.am @@ -0,0 +1,16 @@ + +AM_CPPFLAGS = $(GLIB_CFLAGS) -I$(top_srcdir) + +noinst_LTLIBRARIES = libvfs-sfs.la + +libvfs_sfs_la_SOURCES = \ + sfs.c sfs.h + +SFSCONFFILES = sfs.ini + +if ENABLE_VFS_SFS +sfsconfdir = $(sysconfdir)/@PACKAGE@ +sfsconf_DATA = $(SFSCONFFILES) +endif + +EXTRA_DIST = $(SFSCONFFILES) diff --git a/src/vfs/sfs/Makefile.in b/src/vfs/sfs/Makefile.in new file mode 100644 index 0000000..f9893eb --- /dev/null +++ b/src/vfs/sfs/Makefile.in @@ -0,0 +1,794 @@ +# Makefile.in generated by automake 1.16.5 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2021 Free Software Foundation, Inc. + +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; 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distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +/** + * \file + * \brief Source: Single File fileSystem + * + * This defines whole class of filesystems which contain single file + * inside. It is somehow similar to extfs, except that extfs makes + * whole virtual trees and we do only single virtual files. + * + * If you want to gunzip something, you should open it with \verbatim #ugz \endverbatim + * suffix, DON'T try to gunzip it yourself. + * + * Namespace: exports vfs_sfs_ops + */ + +#include <config.h> +#include <sys/types.h> +#include <unistd.h> +#include <stdio.h> +#include <string.h> + +#include "lib/global.h" +#include "lib/util.h" +#include "lib/widget.h" /* D_ERROR, D_NORMAL */ + +#include "src/execute.h" /* EXECUTE_AS_SHELL */ + +#include "lib/vfs/vfs.h" +#include "lib/vfs/utilvfs.h" +#include "lib/vfs/xdirentry.h" +#include "src/vfs/local/local.h" +#include "lib/vfs/gc.h" /* vfs_stamp_create */ + +#include "sfs.h" + +/*** global variables ****************************************************************************/ + +/*** file scope macro definitions ****************************************************************/ + +#define MAXFS 32 + +typedef enum +{ + F_NONE = 0x0, + F_1 = 0x1, + F_2 = 0x2, + F_NOLOCALCOPY = 0x4, + F_FULLMATCH = 0x8 +} sfs_flags_t; + +#define COPY_CHAR \ + if ((size_t) (t - pad) > sizeof (pad)) \ + { \ + g_free (pqname); \ + return (-1); \ + } \ + else \ + *t++ = *s_iter; + +#define COPY_STRING(a) \ + if ((t - pad) + strlen (a) > sizeof (pad)) \ + { \ + g_free (pqname); \ + return (-1); \ + } \ + else \ + { \ + strcpy (t, a); \ + t += strlen (a); \ + } + +/*** file scope type declarations ****************************************************************/ + +typedef struct cachedfile +{ + char *name; + char *cache; +} cachedfile; + +/*** forward declarations (file scope functions) *************************************************/ + +/*** file scope variables ************************************************************************/ + +static GSList *head = NULL; + +static struct vfs_s_subclass sfs_subclass; +static struct vfs_class *vfs_sfs_ops = VFS_CLASS (&sfs_subclass); + +static int sfs_no = 0; +static struct +{ + char *prefix; + char *command; + sfs_flags_t flags; +} sfs_info[MAXFS]; + +/* --------------------------------------------------------------------------------------------- */ +/*** file scope functions ************************************************************************/ +/* --------------------------------------------------------------------------------------------- */ + +static int +cachedfile_compare (const void *a, const void *b) +{ + const cachedfile *cf = (const cachedfile *) a; + const char *name = (const char *) b; + + return strcmp (name, cf->name); +} + +/* --------------------------------------------------------------------------------------------- */ + +static int +sfs_vfmake (const vfs_path_t * vpath, vfs_path_t * cache_vpath) +{ + int w; + char pad[10240]; + char *s_iter, *t = pad; + gboolean was_percent = FALSE; + vfs_path_t *pname; /* name of parent archive */ + char *pqname; /* name of parent archive, quoted */ + const vfs_path_element_t *path_element; + mc_pipe_t *pip; + GError *error = NULL; + + path_element = vfs_path_get_by_index (vpath, -1); + pname = vfs_path_clone (vpath); + vfs_path_remove_element_by_index (pname, -1); + + w = path_element->class->which (path_element->class, path_element->vfs_prefix); + if (w == -1) + vfs_die ("This cannot happen... Hopefully.\n"); + + if ((sfs_info[w].flags & F_1) == 0 + && strcmp (vfs_path_get_last_path_str (pname), PATH_SEP_STR) != 0) + { + vfs_path_free (pname, TRUE); + return (-1); + } + + /* if ((sfs_info[w].flags & F_2) || (!inpath) || (!*inpath)); else return -1; */ + if ((sfs_info[w].flags & F_NOLOCALCOPY) != 0) + pqname = name_quote (vfs_path_as_str (pname), FALSE); + else + { + vfs_path_t *s; + + s = mc_getlocalcopy (pname); + if (s == NULL) + { + vfs_path_free (pname, TRUE); + return (-1); + } + + pqname = name_quote (vfs_path_get_last_path_str (s), FALSE); + vfs_path_free (s, TRUE); + } + + vfs_path_free (pname, TRUE); + + for (s_iter = sfs_info[w].command; *s_iter != '\0'; s_iter++) + { + if (was_percent) + { + const char *ptr = NULL; + + was_percent = FALSE; + + switch (*s_iter) + { + case '1': + ptr = pqname; + break; + case '2': + ptr = path_element->path; + break; + case '3': + ptr = vfs_path_get_last_path_str (cache_vpath); + break; + case '%': + COPY_CHAR; + continue; + default: + break; + } + + if (ptr != NULL) + { + COPY_STRING (ptr); + } + } + else if (*s_iter == '%') + was_percent = TRUE; + else + { + COPY_CHAR; + } + } + + g_free (pqname); + + /* don't read stdout */ + pip = mc_popen (pad, FALSE, TRUE, &error); + if (pip == NULL) + { + message (D_ERROR, MSG_ERROR, _("SFS virtual file system:\n%s"), error->message); + g_error_free (error); + return (-1); + } + + pip->err.null_term = TRUE; + + mc_pread (pip, &error); + if (error != NULL) + { + message (D_ERROR, MSG_ERROR, _("SFS virtual file system:\n%s"), error->message); + g_error_free (error); + mc_pclose (pip, NULL); + return (-1); + } + + if (pip->err.len > 0) + message (D_ERROR, MSG_ERROR, _("SFS virtual file system:\n%s"), pip->err.buf); + + mc_pclose (pip, NULL); + return 0; /* OK */ +} + +/* --------------------------------------------------------------------------------------------- */ + +static const char * +sfs_redirect (const vfs_path_t * vpath) +{ + GSList *cur; + cachedfile *cf; + vfs_path_t *cache_vpath; + int handle; + + cur = g_slist_find_custom (head, vfs_path_as_str (vpath), cachedfile_compare); + + if (cur != NULL) + { + cf = (cachedfile *) cur->data; + vfs_stamp (vfs_sfs_ops, cf); + return cf->cache; + } + + handle = vfs_mkstemps (&cache_vpath, "sfs", vfs_path_get_last_path_str (vpath)); + + if (handle == -1) + return "/SOMEONE_PLAYING_DIRTY_TMP_TRICKS_ON_US"; + + close (handle); + + if (sfs_vfmake (vpath, cache_vpath) == 0) + { + cf = g_new (cachedfile, 1); + cf->name = g_strdup (vfs_path_as_str (vpath)); + cf->cache = vfs_path_free (cache_vpath, FALSE); + head = g_slist_prepend (head, cf); + + vfs_stamp_create (vfs_sfs_ops, (cachedfile *) head->data); + return cf->cache; + } + + mc_unlink (cache_vpath); + vfs_path_free (cache_vpath, TRUE); + return "/I_MUST_NOT_EXIST"; +} + +/* --------------------------------------------------------------------------------------------- */ + +static void * +sfs_open (const vfs_path_t * vpath /*struct vfs_class *me, const char *path */ , int flags, + mode_t mode) +{ + int *info; + int fd; + + fd = open (sfs_redirect (vpath), NO_LINEAR (flags), mode); + if (fd == -1) + return NULL; + + info = g_new (int, 1); + *info = fd; + + return info; +} + +/* --------------------------------------------------------------------------------------------- */ + +static int +sfs_stat (const vfs_path_t * vpath, struct stat *buf) +{ + return stat (sfs_redirect (vpath), buf); +} + +/* --------------------------------------------------------------------------------------------- */ + +static int +sfs_lstat (const vfs_path_t * vpath, struct stat *buf) +{ +#ifndef HAVE_STATLSTAT + return lstat (sfs_redirect (vpath), buf); +#else + return statlstat (sfs_redirect (vpath), buf); +#endif +} + +/* --------------------------------------------------------------------------------------------- */ + +static int +sfs_chmod (const vfs_path_t * vpath, mode_t mode) +{ + return chmod (sfs_redirect (vpath), mode); +} + +/* --------------------------------------------------------------------------------------------- */ + +static int +sfs_chown (const vfs_path_t * vpath, uid_t owner, gid_t group) +{ + return chown (sfs_redirect (vpath), owner, group); +} + +/* --------------------------------------------------------------------------------------------- */ + +static int +sfs_utime (const vfs_path_t * vpath, mc_timesbuf_t * times) +{ +#ifdef HAVE_UTIMENSAT + return utimensat (AT_FDCWD, sfs_redirect (vpath), *times, 0); +#else + return utime (sfs_redirect (vpath), times); +#endif +} + +/* --------------------------------------------------------------------------------------------- */ + +static int +sfs_readlink (const vfs_path_t * vpath, char *buf, size_t size) +{ + return readlink (sfs_redirect (vpath), buf, size); +} + +/* --------------------------------------------------------------------------------------------- */ + +static vfsid +sfs_getid (const vfs_path_t * vpath) +{ + GSList *cur; + + cur = g_slist_find_custom (head, vfs_path_as_str (vpath), cachedfile_compare); + + return (vfsid) (cur != NULL ? cur->data : NULL); +} + +/* --------------------------------------------------------------------------------------------- */ + +static void +sfs_free (vfsid id) +{ + struct cachedfile *which; + GSList *cur; + + which = (struct cachedfile *) id; + cur = g_slist_find (head, which); + if (cur == NULL) + vfs_die ("Free of thing which is unknown to me\n"); + + which = (struct cachedfile *) cur->data; + unlink (which->cache); + g_free (which->cache); + g_free (which->name); + g_free (which); + + head = g_slist_delete_link (head, cur); +} + +/* --------------------------------------------------------------------------------------------- */ + +static void +sfs_fill_names (struct vfs_class *me, fill_names_f func) +{ + GSList *cur; + + (void) me; + + for (cur = head; cur != NULL; cur = g_slist_next (cur)) + func (((cachedfile *) cur->data)->name); +} + +/* --------------------------------------------------------------------------------------------- */ + +static gboolean +sfs_nothingisopen (vfsid id) +{ + /* FIXME: Investigate whether have to guard this like in + the other VFSs (see fd_usage in extfs) -- Norbert */ + (void) id; + return TRUE; +} + +/* --------------------------------------------------------------------------------------------- */ + +static vfs_path_t * +sfs_getlocalcopy (const vfs_path_t * vpath) +{ + return vfs_path_from_str (sfs_redirect (vpath)); +} + +/* --------------------------------------------------------------------------------------------- */ + +static int +sfs_ungetlocalcopy (const vfs_path_t * vpath, const vfs_path_t * local, gboolean has_changed) +{ + (void) vpath; + (void) local; + (void) has_changed; + return 0; +} + +/* --------------------------------------------------------------------------------------------- */ + +static int +sfs_init (struct vfs_class *me) +{ + char *mc_sfsini; + FILE *cfg; + char key[256]; + + (void) me; + + mc_sfsini = g_build_filename (mc_global.sysconfig_dir, "sfs.ini", (char *) NULL); + cfg = fopen (mc_sfsini, "r"); + + if (cfg == NULL) + { + fprintf (stderr, _("%s: Warning: file %s not found\n"), "sfs_init()", mc_sfsini); + g_free (mc_sfsini); + return 0; + } + g_free (mc_sfsini); + + sfs_no = 0; + while (sfs_no < MAXFS && fgets (key, sizeof (key), cfg) != NULL) + { + char *c, *semi = NULL; + sfs_flags_t flags = F_NONE; + + if (*key == '#' || *key == '\n') + continue; + + for (c = key; *c != '\0'; c++) + if (*c == ':' || IS_PATH_SEP (*c)) + { + semi = c; + if (IS_PATH_SEP (*c)) + { + *c = '\0'; + flags |= F_FULLMATCH; + } + break; + } + + if (semi == NULL) + { + invalid_line: + fprintf (stderr, _("Warning: Invalid line in %s:\n%s\n"), "sfs.ini", key); + continue; + } + + for (c = semi + 1; *c != '\0' && !whitespace (*c); c++) + switch (*c) + { + case '1': + flags |= F_1; + break; + case '2': + flags |= F_2; + break; + case 'R': + flags |= F_NOLOCALCOPY; + break; + default: + fprintf (stderr, _("Warning: Invalid flag %c in %s:\n%s\n"), *c, "sfs.ini", key); + } + + if (*c == '\0') + goto invalid_line; + + c++; + *(semi + 1) = '\0'; + semi = strchr (c, '\n'); + if (semi != NULL) + *semi = '\0'; + + sfs_info[sfs_no].prefix = g_strdup (key); + sfs_info[sfs_no].command = g_strdup (c); + sfs_info[sfs_no].flags = flags; + sfs_no++; + } + fclose (cfg); + + return 1; +} + +/* --------------------------------------------------------------------------------------------- */ + +static void +sfs_done (struct vfs_class *me) +{ + int i; + + (void) me; + + for (i = 0; i < sfs_no; i++) + { + MC_PTR_FREE (sfs_info[i].prefix); + MC_PTR_FREE (sfs_info[i].command); + } + sfs_no = 0; +} + +/* --------------------------------------------------------------------------------------------- */ + +static int +sfs_which (struct vfs_class *me, const char *path) +{ + int i; + + (void) me; + + for (i = 0; i < sfs_no; i++) + if ((sfs_info[i].flags & F_FULLMATCH) != 0) + { + if (strcmp (path, sfs_info[i].prefix) == 0) + return i; + } + else if (strncmp (path, sfs_info[i].prefix, strlen (sfs_info[i].prefix)) == 0) + return i; + + return (-1); +} + +/* --------------------------------------------------------------------------------------------- */ +/*** public functions ****************************************************************************/ +/* --------------------------------------------------------------------------------------------- */ + +void +vfs_init_sfs (void) +{ + /* NULLize vfs_s_subclass members */ + memset (&sfs_subclass, 0, sizeof (sfs_subclass)); + + vfs_init_class (vfs_sfs_ops, "sfs", VFSF_UNKNOWN, NULL); + vfs_sfs_ops->init = sfs_init; + vfs_sfs_ops->done = sfs_done; + vfs_sfs_ops->fill_names = sfs_fill_names; + vfs_sfs_ops->which = sfs_which; + vfs_sfs_ops->open = sfs_open; + vfs_sfs_ops->close = local_close; + vfs_sfs_ops->read = local_read; + vfs_sfs_ops->stat = sfs_stat; + vfs_sfs_ops->lstat = sfs_lstat; + vfs_sfs_ops->fstat = local_fstat; + vfs_sfs_ops->chmod = sfs_chmod; + vfs_sfs_ops->chown = sfs_chown; + vfs_sfs_ops->utime = sfs_utime; + vfs_sfs_ops->readlink = sfs_readlink; + vfs_sfs_ops->ferrno = local_errno; + vfs_sfs_ops->lseek = local_lseek; + vfs_sfs_ops->getid = sfs_getid; + vfs_sfs_ops->nothingisopen = sfs_nothingisopen; + vfs_sfs_ops->free = sfs_free; + vfs_sfs_ops->getlocalcopy = sfs_getlocalcopy; + vfs_sfs_ops->ungetlocalcopy = sfs_ungetlocalcopy; + vfs_register_class (vfs_sfs_ops); +} + +/* --------------------------------------------------------------------------------------------- */ diff --git a/src/vfs/sfs/sfs.h b/src/vfs/sfs/sfs.h new file mode 100644 index 0000000..c846c93 --- /dev/null +++ b/src/vfs/sfs/sfs.h @@ -0,0 +1,18 @@ +#ifndef MC__VFS_SFS_H +#define MC__VFS_SFS_H + +/*** typedefs(not structures) and defined constants **********************************************/ + +/*** enums ***************************************************************************************/ + +/*** structures declarations (and typedefs of structures)*****************************************/ + +/*** global variables defined in .c file *********************************************************/ + +/*** declarations of public functions ************************************************************/ + +void vfs_init_sfs (void); + +/*** inline functions ****************************************************************************/ + +#endif /* MC__VFS_SFS_H */ diff --git a/src/vfs/sfs/sfs.ini b/src/vfs/sfs/sfs.ini new file mode 100644 index 0000000..d817dc9 --- /dev/null +++ b/src/vfs/sfs/sfs.ini @@ -0,0 +1,34 @@ +# +# This is config for Single File fileSystem +# +# Notice that output files (%3) are pre-created atomically in /tmp +# with 0600 rights, so it is safe to > %3 +# +gz/1 gzip < %1 > %3 +ugz/1 gzip -cdf < %1 > %3 +bz/1 bzip < %1 > %3 +ubz/1 bzip -d < %1 > %3 +bz2/1 bzip2 < %1 > %3 +ubz2/1 bzip2 -d < %1 > %3 +lz/1 lzip < %1 > %3 +ulz/1 lzip -d < %1 > %3 +lz4/1 lz4 < %1 > %3 +ulz4/1 lz4 -d < %1 > %3 +lzma/1 lzma < %1 > %3 +ulzma/1 lzma -d < %1 > %3 +xz/1 xz < %1 > %3 +uxz/1 xz -d < %1 > %3 +zst/1 zstd < %1 > %3 +uzst/1 zstd -d < %1 > %3 +tar/1 tar cf %3 %1 +tgz/1 tar czf %3 %1 +uhtml/1 lynx -force_html -dump %1 > %3 +uman/1 groff -Tascii -man %1 > %3 +uue/1 uuenpipe < %1 > %3 +uude/1 uudepipe < %1 > %3 +crlf/1 todos < %1 > %3 +cr/1 fromdos < %1 > %3 +# Fixme: we need it to fail whenever it should +url:2 lynx -source `echo "%2" | sed 's-|-/-g'` > %3 +nop/1 cat %1 > %3 +strings/1 strings %1 > %3 |