--- /dev/null
+*~
+*.o
+*.so
+.deps
+.libs
+*.la
+*.lo
+Makefile.in
+Makefile
+aclocal.m4
+autom4te.cache
+compile
+config.guess
+config.h
+config.h.in
+config.log
+config.status
+config.sub
+configure
+depcomp
+install-sh
+libtool
+ltmain.sh
+missing
+stamp-h1
--- /dev/null
+Gustavo Sverzut Barbieri <gustavo.barbieri@openbossa.org>
--- /dev/null
+ GNU LESSER GENERAL PUBLIC LICENSE
+ Version 2.1, February 1999
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--- /dev/null
+Installation Instructions
+*************************
+
+Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002, 2004, 2005,
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+Basic Installation
+==================
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+Compilers and Options
+=====================
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+Compiling For Multiple Architectures
+====================================
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+Installation Names
+==================
+
+By default, `make install' installs the package's commands under
+`/usr/local/bin', include files under `/usr/local/include', etc. You
+can specify an installation prefix other than `/usr/local' by giving
+`configure' the option `--prefix=PREFIX'.
+
+ You can specify separate installation prefixes for
+architecture-specific files and architecture-independent files. If you
+pass the option `--exec-prefix=PREFIX' to `configure', the package uses
+PREFIX as the prefix for installing programs and libraries.
+Documentation and other data files still use the regular prefix.
+
+ In addition, if you use an unusual directory layout you can give
+options like `--bindir=DIR' to specify different values for particular
+kinds of files. Run `configure --help' for a list of the directories
+you can set and what kinds of files go in them.
+
+ If the package supports it, you can cause programs to be installed
+with an extra prefix or suffix on their names by giving `configure' the
+option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.
+
+Optional Features
+=================
+
+Some packages pay attention to `--enable-FEATURE' options to
+`configure', where FEATURE indicates an optional part of the package.
+They may also pay attention to `--with-PACKAGE' options, where PACKAGE
+is something like `gnu-as' or `x' (for the X Window System). The
+`README' should mention any `--enable-' and `--with-' options that the
+package recognizes.
+
+ For packages that use the X Window System, `configure' can usually
+find the X include and library files automatically, but if it doesn't,
+you can use the `configure' options `--x-includes=DIR' and
+`--x-libraries=DIR' to specify their locations.
+
+Specifying the System Type
+==========================
+
+There may be some features `configure' cannot figure out automatically,
+but needs to determine by the type of machine the package will run on.
+Usually, assuming the package is built to be run on the _same_
+architectures, `configure' can figure that out, but if it prints a
+message saying it cannot guess the machine type, give it the
+`--build=TYPE' option. TYPE can either be a short name for the system
+type, such as `sun4', or a canonical name which has the form:
+
+ CPU-COMPANY-SYSTEM
+
+where SYSTEM can have one of these forms:
+
+ OS KERNEL-OS
+
+ See the file `config.sub' for the possible values of each field. If
+`config.sub' isn't included in this package, then this package doesn't
+need to know the machine type.
+
+ If you are _building_ compiler tools for cross-compiling, you should
+use the option `--target=TYPE' to select the type of system they will
+produce code for.
+
+ If you want to _use_ a cross compiler, that generates code for a
+platform different from the build platform, you should specify the
+"host" platform (i.e., that on which the generated programs will
+eventually be run) with `--host=TYPE'.
+
+Sharing Defaults
+================
+
+If you want to set default values for `configure' scripts to share, you
+can create a site shell script called `config.site' that gives default
+values for variables like `CC', `cache_file', and `prefix'.
+`configure' looks for `PREFIX/share/config.site' if it exists, then
+`PREFIX/etc/config.site' if it exists. Or, you can set the
+`CONFIG_SITE' environment variable to the location of the site script.
+A warning: not all `configure' scripts look for a site script.
+
+Defining Variables
+==================
+
+Variables not defined in a site shell script can be set in the
+environment passed to `configure'. However, some packages may run
+configure again during the build, and the customized values of these
+variables may be lost. In order to avoid this problem, you should set
+them in the `configure' command line, using `VAR=value'. For example:
+
+ ./configure CC=/usr/local2/bin/gcc
+
+causes the specified `gcc' to be used as the C compiler (unless it is
+overridden in the site shell script).
+
+Unfortunately, this technique does not work for `CONFIG_SHELL' due to
+an Autoconf bug. Until the bug is fixed you can use this workaround:
+
+ CONFIG_SHELL=/bin/bash /bin/bash ./configure CONFIG_SHELL=/bin/bash
+
+`configure' Invocation
+======================
+
+`configure' recognizes the following options to control how it operates.
+
+`--help'
+`-h'
+ Print a summary of the options to `configure', and exit.
+
+`--version'
+`-V'
+ Print the version of Autoconf used to generate the `configure'
+ script, and exit.
+
+`--cache-file=FILE'
+ Enable the cache: use and save the results of the tests in FILE,
+ traditionally `config.cache'. FILE defaults to `/dev/null' to
+ disable caching.
+
+`--config-cache'
+`-C'
+ Alias for `--cache-file=config.cache'.
+
+`--quiet'
+`--silent'
+`-q'
+ Do not print messages saying which checks are being made. To
+ suppress all normal output, redirect it to `/dev/null' (any error
+ messages will still be shown).
+
+`--srcdir=DIR'
+ Look for the package's source code in directory DIR. Usually
+ `configure' can determine that directory automatically.
+
+`configure' also accepts some other, not widely useful, options. Run
+`configure --help' for more details.
+
--- /dev/null
+MAINTAINERCLEANFILES = \
+ Makefile.in \
+ aclocal.m4 \
+ compile \
+ config.guess \
+ config.h.in \
+ config.sub \
+ configure \
+ depcomp \
+ install-sh \
+ ltmain.sh \
+ missing
+
+SUBDIRS = src
+
+EXTRA_DIST = \
+ README \
+ AUTHORS \
+ COPYING
--- /dev/null
+ LIGHT MEDIA SCANNER
+ ===================
+
+Lightweight media scanner meant to be used in not-so-powerful devices,
+like embedded systems or old machines.
+
+Provides an optimized way to recursively scan directories, handling
+the parser in a child process, avoiding breaks of the main process
+when parsers break (quite common with such bad libs and tags).
+
+Parsers are plugins in the form of shared objects, so it's easy to add
+new without having to recompiling the scanner.
+
+The scanner will use SQLite3 to store file-mtime association, avoiding
+parsing files that are already up-to-date. This SQLite connection and
+the file id within the master table 'files' are handled to plugins for
+relationship with other tables.
--- /dev/null
+#!/bin/sh
+
+rm -rf autom4te.cache
+rm -f aclocal.m4 ltmain.sh
+
+echo "Running aclocal..." ; aclocal $ACLOCAL_FLAGS -I m4 || exit 1
+echo "Running autoheader..." ; autoheader || exit 1
+echo "Running autoconf..." ; autoconf || exit 1
+echo "Running libtoolize..." ; (libtoolize --copy --automake || glibtoolize --automake) || exit 1
+echo "Running automake..." ; automake --add-missing --copy --gnu || exit 1
+
+if [ -z "$NOCONFIGURE" ]; then
+ ./configure "$@"
+fi
--- /dev/null
+AC_INIT(lightmediascanner, 0.1.0.1, gustavo.barbieri@openbossa.org)
+AC_PREREQ(2.52)
+AC_CONFIG_SRCDIR(configure.ac)
+AC_CANONICAL_BUILD
+AC_CANONICAL_HOST
+AC_ISC_POSIX
+
+AM_INIT_AUTOMAKE(1.6 dist-bzip2)
+AM_CONFIG_HEADER(config.h)
+
+AC_PROG_CC
+AM_PROG_CC_STDC
+AM_PROG_CC_C_O
+AC_HEADER_STDC
+AC_C_CONST
+
+define([AC_LIBTOOL_LANG_CXX_CONFIG], [:])dnl
+define([AC_LIBTOOL_LANG_F77_CONFIG], [:])dnl
+AC_PROG_LIBTOOL
+
+VMAJ=`echo $PACKAGE_VERSION | awk -F. '{printf("%s", $1);}'`
+VMIN=`echo $PACKAGE_VERSION | awk -F. '{printf("%s", $2);}'`
+VMIC=`echo $PACKAGE_VERSION | awk -F. '{printf("%s", $3);}'`
+SNAP=`echo $PACKAGE_VERSION | awk -F. '{printf("%s", $4);}'`
+version_info=`expr $VMAJ + $VMIN`":$VMIC:$VMIN"
+AC_SUBST(version_info)
+
+pluginsdir="${libdir}/lightmediascanner/plugins"
+
+AC_SUBST(pluginsdir)
+AS_AC_EXPAND(PLUGINSDIR, $pluginsdir)
+AC_DEFINE_UNQUOTED(PLUGINSDIR, ["$PLUGINSDIR"], [Where plugins are installed.])
+
+AC_CHECK_FUNCS(realpath)
+
+AC_OUTPUT([
+Makefile
+src/Makefile
+src/bin/Makefile
+src/lib/Makefile
+src/plugins/Makefile
+src/plugins/dummy/Makefile
+])
--- /dev/null
+dnl AS_AC_EXPAND(VAR, CONFIGURE_VAR)
+dnl
+dnl example
+dnl AS_AC_EXPAND(SYSCONFDIR, $sysconfdir)
+dnl will set SYSCONFDIR to /usr/local/etc if prefix=/usr/local
+
+AC_DEFUN([AS_AC_EXPAND],
+[
+ EXP_VAR=[$1]
+ FROM_VAR=[$2]
+
+ dnl first expand prefix and exec_prefix if necessary
+ prefix_save=$prefix
+ exec_prefix_save=$exec_prefix
+
+ dnl if no prefix given, then use /usr/local, the default prefix
+ if test "x$prefix" = "xNONE"; then
+ prefix=$ac_default_prefix
+ fi
+ dnl if no exec_prefix given, then use prefix
+ if test "x$exec_prefix" = "xNONE"; then
+ exec_prefix=$prefix
+ fi
+
+ full_var="$FROM_VAR"
+ dnl loop until it doesn't change anymore
+ while true; do
+ new_full_var="`eval echo $full_var`"
+ dnl if test "x$new_full_var" = "x$full_var"; then
+ if test "x${new_full_var:0:1}" != "x\$"; then
+ break;
+ fi
+ full_var=$new_full_var
+ done
+
+ dnl clean up
+ full_var=$new_full_var
+ AC_SUBST([$1], "$full_var")
+
+ dnl restore prefix and exec_prefix
+ prefix=$prefix_save
+ exec_prefix=$exec_prefix_save
+])
--- /dev/null
+MAINTAINERCLEANFILES = Makefile.in
+
+SUBDIRS = lib bin plugins
--- /dev/null
+MAINTAINERCLEANFILES = Makefile.in
+
+AM_CPPFLAGS = \
+ -I$(top_srcdir)/src/lib
+
+noinst_PROGRAMS = \
+ test
+
+
+test_SOURCES = \
+ test.c
+
+test_LDADD = \
+ $(top_builddir)/src/lib/liblightmediascanner.la
+
+test_DEPENDENCIES = \
+ $(top_builddir)/src/lib/liblightmediascanner.la
--- /dev/null
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <lightmediascanner.h>
+#include <stdio.h>
+
+void
+usage(const char *prgname)
+{
+ fprintf(stderr,
+ "Usage:\n"
+ "\t%s <parser> <scan-path>\n"
+ "\n",
+ prgname);
+}
+
+int
+main(int argc, char *argv[])
+{
+ char *parser_name, *scan_path;
+ lms_t *lms;
+ lms_plugin_t *parser;
+
+ if (argc < 3) {
+ usage(argv[0]);
+ return 1;
+ }
+
+ parser_name = argv[1];
+ scan_path = argv[2];
+
+ lms = lms_new();
+ if (!lms) {
+ fprintf(stderr, "ERROR: could not create light media scanner.\n");
+ return -1;
+ }
+
+ parser = lms_parser_find_and_add(lms, parser_name);
+ if (!parser) {
+ fprintf(stderr, "ERROR: could not create parser \"%s\".\n",
+ parser_name);
+ lms_free(lms);
+ return -2;
+ }
+
+ if (lms_process(lms, scan_path) != 0) {
+ fprintf(stderr, "ERROR: processing \"%s\".\n", scan_path);
+ lms_free(lms);
+ return -3;
+ }
+
+ if (lms_free(lms) != 0) {
+ fprintf(stderr, "ERROR: could not close light media scanner.\n");
+ return -4;
+ }
+
+ return 0;
+}
--- /dev/null
+MAINTAINERCLEANFILES = Makefile.in
+
+AM_CPPFLAGS = -I$(top_srcdir)/src/lib
+
+include_HEADERS = lightmediascanner.h lightmediascanner_plugin.h
+
+lib_LTLIBRARIES = liblightmediascanner.la
+
+liblightmediascanner_la_SOURCES = lightmediascanner.c
+liblightmediascanner_la_LIBADD = -ldl
+liblightmediascanner_la_LDFLAGS = -version-info @version_info@
--- /dev/null
+/**
+ * Copyright (C) 2007 by INdT
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is 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 Lesser General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * @author Gustavo Sverzut Barbieri <gustavo.barbieri@openbossa.org>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#define _GNU_SOURCE
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#include <dirent.h>
+#include <limits.h>
+#include <signal.h>
+#include <poll.h>
+#include <dlfcn.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "lightmediascanner.h"
+#include "lightmediascanner_plugin.h"
+
+#define PATH_SIZE PATH_MAX
+#define SLAVE_TIMEOUT 1000
+
+struct fds {
+ int r;
+ int w;
+};
+
+/* info to be carried along lms_process() */
+struct pinfo {
+ struct fds master;
+ struct fds slave;
+ struct pollfd poll;
+ lms_t *lms;
+ pid_t child;
+};
+
+struct parser {
+ lms_plugin_t *plugin;
+ void *dl_handle;
+ char *so_path;
+};
+
+struct lms {
+ struct parser *parsers;
+ int n_parsers;
+ unsigned int is_processing:1;
+};
+
+/***********************************************************************
+ * Master-Slave communication.
+ ***********************************************************************/
+
+static int
+_master_send_path(const struct fds *master, int plen, int dlen, const char *p)
+{
+ int lengths[2];
+
+ lengths[0] = plen;
+ lengths[1] = dlen;
+
+ if (write(master->w, lengths, sizeof(lengths)) < 0) {
+ perror("write");
+ return -1;
+ }
+
+ if (write(master->w, p, plen) < 0) {
+ perror("write");
+ return -1;
+ }
+
+ return 0;
+}
+
+static int
+_master_send_finish(const struct fds *master)
+{
+ const int lengths[2] = {-1, -1};
+
+ if (write(master->w, lengths, sizeof(lengths)) < 0) {
+ perror("write");
+ return -1;
+ }
+ return 0;
+}
+
+static int
+_master_recv_reply(const struct fds *master, struct pollfd *pfd, int *reply)
+{
+ int r;
+
+ r = poll(pfd, 1, SLAVE_TIMEOUT);
+ if (r < 0) {
+ perror("poll");
+ return -1;
+ }
+
+ if (r == 0)
+ return 1;
+
+ if (read(master->r, reply, sizeof(*reply)) != sizeof(*reply)) {
+ perror("read");
+ return -2;
+ }
+
+ return 0;
+}
+
+static int
+_slave_send_reply(const struct fds *slave, int reply)
+{
+ if (write(slave->w, &reply, sizeof(reply)) == 0) {
+ perror("write");
+ return -1;
+ }
+ return 0;
+}
+
+static int
+_slave_recv_path(const struct fds *slave, int *plen, int *dlen, char *path)
+{
+ int lengths[2], r;
+
+ r = read(slave->r, lengths, sizeof(lengths));
+ if (r != sizeof(lengths)) {
+ perror("read");
+ return -1;
+ }
+ *plen = lengths[0];
+ *dlen = lengths[1];
+
+ if (*plen == -1)
+ return 0;
+
+ if (*plen > PATH_SIZE) {
+ fprintf(stderr, "ERROR: path too long (%d/%d)\n", *plen, PATH_SIZE);
+ return -2;
+ }
+
+ r = read(slave->r, path, *plen);
+ if (r != *plen) {
+ fprintf(stderr, "ERROR: could not read whole path %d/%d\n", r, *plen);
+ return -3;
+ }
+
+ path[*plen] = 0;
+ return 0;
+}
+
+
+/***********************************************************************
+ * Slave-side.
+ ***********************************************************************/
+
+static int
+_slave_work(lms_t *lms, struct fds *fds)
+{
+ int r, len, base;
+ char path[PATH_SIZE];
+
+ while (((r = _slave_recv_path(fds, &len, &base, path)) == 0) && len > 0) {
+ int i;
+
+ for (i = 0; i < lms->n_parsers; i++) {
+ lms_plugin_t *plugin;
+
+ plugin = lms->parsers[i].plugin;
+ plugin->parse(plugin, path, len, base);
+ }
+ _slave_send_reply(fds, 0);
+ }
+
+ return r;
+}
+
+
+/***********************************************************************
+ * Master-side.
+ ***********************************************************************/
+
+static int
+_consume_garbage(struct pollfd *pfd)
+{
+ int r;
+
+ while ((r = poll(pfd, 1, 0)) > 0) {
+ if (pfd->revents & (POLLERR | POLLHUP | POLLNVAL))
+ return 0;
+ else if (pfd->revents & POLLIN) {
+ char c;
+
+ read(pfd->fd, &c, sizeof(c));
+ }
+ }
+
+ return r;
+}
+
+static int
+_close_fds(struct fds *fds)
+{
+ int r;
+
+ r = 0;
+ if (close(fds->r) != 0) {
+ r--;
+ perror("close");
+ }
+
+ if (close(fds->w) != 0) {
+ r--;
+ perror("close");
+ }
+
+ return r;
+}
+
+static int
+_close_pipes(struct pinfo *pinfo)
+{
+ int r;
+
+ r = _close_fds(&pinfo->master);
+ r += _close_fds(&pinfo->slave);
+
+ return r;
+}
+
+static int
+_create_pipes(struct pinfo *pinfo)
+{
+ int fds[2];
+
+ if (pipe(fds) != 0) {
+ perror("pipe");
+ return -1;
+ }
+ pinfo->master.r = fds[0];
+ pinfo->slave.w = fds[1];
+
+ if (pipe(fds) != 0) {
+ perror("pipe");
+ close(pinfo->master.r);
+ close(pinfo->slave.w);
+ return -1;
+ }
+ pinfo->slave.r = fds[0];
+ pinfo->master.w = fds[1];
+
+ pinfo->poll.fd = pinfo->master.r;
+ pinfo->poll.events = POLLIN;
+
+ return 0;
+}
+
+static int
+_create_slave(struct pinfo *pinfo)
+{
+ int r;
+
+ pinfo->child = fork();
+ if (pinfo->child == -1) {
+ perror("fork");
+ return -1;
+ }
+
+ if (pinfo->child > 0)
+ return 0;
+
+ _close_fds(&pinfo->master);
+ nice(19);
+ r = _slave_work(pinfo->lms, &pinfo->slave);
+ lms_free(pinfo->lms);
+ _exit(r);
+ return r; /* shouldn't reach anyway... */
+}
+
+static int
+_waitpid(pid_t pid)
+{
+ int status;
+ pid_t r;
+
+ r = waitpid(pid, &status, 0);
+ if (r > -1)
+ return 0;
+ else
+ perror("waitpid");
+
+ return r;
+}
+
+static int
+_finish_slave(struct pinfo *pinfo)
+{
+ int r;
+
+ if (pinfo->child <= 0)
+ return 0;
+
+ r = _master_send_finish(&pinfo->master);
+ if (r == 0)
+ r = _waitpid(pinfo->child);
+ else {
+ r = kill(pinfo->child, SIGKILL);
+ if (r < 0)
+ perror("kill");
+ else
+ r =_waitpid(pinfo->child);
+ }
+
+ return r;
+}
+
+static int
+_restart_slave(struct pinfo *pinfo)
+{
+ int status;
+
+ if (waitpid(pinfo->child, &status, WNOHANG) > 0) {
+ if (WIFEXITED(status)) {
+ int code;
+
+ code = WEXITSTATUS(status);
+ if (code != 0) {
+ fprintf(stderr, "ERROR: slave returned %d, exit.\n", code);
+ pinfo->child = 0;
+ return -1;
+ }
+ } else {
+ if (WIFSIGNALED(status)) {
+ int code;
+
+ code = WTERMSIG(status);
+ fprintf(stderr, "ERROR: slave was terminated by signal %d.\n",
+ code);
+ }
+ pinfo->child = 0;
+ return -1;
+ }
+ }
+
+ if (kill(pinfo->child, SIGKILL))
+ perror("kill");
+
+ if (waitpid(pinfo->child, &status, 0) < 0)
+ perror("waitpid");
+
+ _consume_garbage(&pinfo->poll);
+ return _create_slave(pinfo);
+}
+
+static int
+_strcat(int base, char *path, const char *name)
+{
+ int new_len, name_len;
+
+ name_len = strlen(name);
+ new_len = base + name_len;
+
+ if (new_len >= PATH_SIZE) {
+ path[base] = '\0';
+ fprintf(stderr,
+ "ERROR: path concatenation too long %d of %d "
+ "available: \"%s\" + \"%s\"\n", new_len, PATH_SIZE,
+ path, name);
+ return -1;
+ }
+
+ memcpy(path + base, name, name_len + 1);
+
+ return new_len;
+}
+
+static int
+_process_file(struct pinfo *pinfo, int base, char *path, const char *name)
+{
+ int new_len, reply, r;
+
+ new_len = _strcat(base, path, name);
+ if (new_len < 0)
+ return -1;
+
+ if (_master_send_path(&pinfo->master, new_len, base, path) != 0)
+ return -2;
+
+ r = _master_recv_reply(&pinfo->master, &pinfo->poll, &reply);
+ if (r < 0)
+ return -3;
+ else if (r == 1) {
+ reply = 1;
+ fprintf(stderr, "ERROR: slave took too long, restart %d\n",
+ pinfo->child);
+ if (_restart_slave(pinfo) != 0)
+ return -4;
+ }
+
+ return reply;
+}
+
+static int
+_process_dir(struct pinfo *pinfo, int base, char *path, const char *name)
+{
+ DIR *dir;
+ struct dirent *de;
+ int new_len, r;
+
+ new_len = _strcat(base, path, name);
+ if (new_len < 0)
+ return -1;
+ else if (new_len + 1 >= PATH_SIZE) {
+ fprintf(stderr, "ERROR: path too long\n");
+ return -2;
+ }
+
+ dir = opendir(path);
+ if (dir == NULL) {
+ perror("opendir");
+ return -3;
+ }
+
+ path[new_len] = '/';
+ new_len++;
+
+ r = 0;
+ while ((de = readdir(dir)) != NULL) {
+ if (de->d_name[0] == '.')
+ continue;
+ if (de->d_type == DT_REG) {
+ if (_process_file(pinfo, new_len, path, de->d_name) < 0) {
+ path[new_len - 1] = '\0';
+ fprintf(stderr,
+ "ERROR: unrecoverable error parsing file, "
+ "exit \"%s\".\n", path);
+ r = -4;
+ goto end;
+ }
+ } else if (de->d_type == DT_DIR || de->d_type == DT_UNKNOWN) {
+ if (_process_dir(pinfo, new_len, path, de->d_name) < 0) {
+ path[new_len - 1] = '\0';
+ fprintf(stderr,
+ "ERROR: unrecoverable error parsing dir, "
+ "exit \"%s\".\n", path);
+ r = -4;
+ goto end;
+ }
+ }
+ }
+
+ end:
+ closedir(dir);
+ return r;
+}
+
+
+/***********************************************************************
+ * Plugins handling.
+ ***********************************************************************/
+
+static int
+_parser_load(struct parser *p, const char *so_path)
+{
+ lms_plugin_t *(*plugin_open)(void);
+ char *errmsg;
+
+ memset(p, 0, sizeof(*p));
+
+ p->dl_handle = dlopen(so_path, RTLD_NOW | RTLD_LOCAL);
+ errmsg = dlerror();
+ if (errmsg) {
+ fprintf(stderr, "ERROR: could not dlopen() %s\n", errmsg);
+ return -1;
+ }
+
+ plugin_open = dlsym(p->dl_handle, "lms_plugin_open");
+ errmsg = dlerror();
+ if (errmsg) {
+ fprintf(stderr, "ERROR: could not find plugin entry point %s\n",
+ errmsg);
+ return -2;
+ }
+
+ p->so_path = strdup(so_path);
+ if (!p->so_path) {
+ perror("strdup");
+ return -3;
+ }
+
+ p->plugin = plugin_open();
+ if (!p->plugin) {
+ fprintf(stderr, "ERROR: plugin \"%s\" failed to init.\n", so_path);
+ return -4;
+ }
+
+ return 0;
+}
+
+static int
+_parser_unload(struct parser *p)
+{
+ int r;
+
+ r = 0;
+ if (p->plugin) {
+ if (p->plugin->close(p->plugin) != 0) {
+ fprintf(stderr, "ERROR: plugin \"%s\" failed to deinit.\n",
+ p->so_path);
+ r -= 1;
+ }
+ }
+
+ if (p->dl_handle) {
+ char *errmsg;
+
+ dlclose(p->dl_handle);
+ errmsg = dlerror();
+ if (errmsg) {
+ fprintf(stderr, "ERROR: could not dlclose() plugin \"%s\": %s\n",
+ errmsg, p->so_path);
+ r -= 1;
+ }
+ }
+
+ if (p->so_path)
+ free(p->so_path);
+
+ return r;
+}
+
+
+/***********************************************************************
+ * Public API.
+ ***********************************************************************/
+lms_t *
+lms_new(void)
+{
+ return calloc(1, sizeof(lms_t));
+}
+
+int
+lms_free(lms_t *lms)
+{
+ int i;
+
+ if (!lms)
+ return 0;
+
+ if (lms->is_processing)
+ return -1;
+
+ if (lms->parsers) {
+ for (i = 0; i < lms->n_parsers; i++)
+ _parser_unload(lms->parsers + i);
+
+ free(lms->parsers);
+ }
+
+ free(lms);
+ return 0;
+}
+
+lms_plugin_t *
+lms_parser_add(lms_t *lms, const char *so_path)
+{
+ struct parser *parser;
+
+ if (!lms)
+ return NULL;
+
+ if (!so_path)
+ return NULL;
+
+ if (lms->is_processing) {
+ fprintf(stderr, "ERROR: do not add parsers while it's processing.\n");
+ return NULL;
+ }
+
+ lms->parsers = realloc(lms->parsers,
+ (lms->n_parsers + 1) * sizeof(struct parser));
+ if (!lms->parsers) {
+ perror("realloc");
+ return NULL;
+ }
+
+ parser = lms->parsers + lms->n_parsers;
+ if (_parser_load(parser, so_path) != 0) {
+ _parser_unload(parser);
+ return NULL;
+ }
+
+ lms->n_parsers++;
+ return parser->plugin;
+}
+
+lms_plugin_t *
+lms_parser_find_and_add(lms_t *lms, const char *name)
+{
+ char so_path[PATH_MAX];
+
+ if (!lms)
+ return NULL;
+ if (!name)
+ return NULL;
+
+ snprintf(so_path, sizeof(so_path), "%s/%s.so", PLUGINSDIR, name);
+ return lms_parser_add(lms, so_path);
+}
+
+int
+lms_parser_del(lms_t *lms, lms_plugin_t *handle)
+{
+ int i;
+
+ if (!lms)
+ return -1;
+ if (!handle)
+ return -2;
+ if (!lms->parsers)
+ return -3;
+ if (lms->is_processing) {
+ fprintf(stderr, "ERROR: do not del parsers while it's processing.\n");
+ return -4;
+ }
+
+ for (i = 0; i < lms->n_parsers; i++) {
+ if (lms->parsers[i].plugin == handle) {
+ struct parser *parser;
+
+ parser = lms->parsers + i;
+ _parser_unload(parser);
+ lms->n_parsers--;
+
+ if (lms->n_parsers == 0) {
+ free(lms->parsers);
+ lms->parsers = NULL;
+ return 0;
+ } else {
+ int dif;
+
+ dif = lms->n_parsers - i;
+ if (dif)
+ lms->parsers = memmove(parser, parser + 1,
+ dif * sizeof(struct parser));
+
+ lms->parsers = realloc(lms->parsers,
+ lms->n_parsers * sizeof(struct parser));
+ if (!lms->parsers) {
+ lms->n_parsers = 0;
+ return -5;
+ }
+
+ return 0;
+ }
+ }
+ }
+
+ return -3;
+}
+
+int
+lms_process(lms_t *lms, const char *top_path)
+{
+ struct pinfo pinfo;
+ int r, len;
+ char path[PATH_SIZE], *bname;
+
+ if (!lms) {
+ r = -1;
+ goto end;
+ }
+
+ if (!top_path) {
+ r = -2;
+ goto end;
+ }
+
+ if (lms->is_processing) {
+ fprintf(stderr, "ERROR: is already processing.\n");
+ r = -3;
+ goto end;
+ }
+
+ if (!lms->parsers) {
+ fprintf(stderr, "ERROR: no plugins registered.\n");
+ r = -4;
+ goto end;
+ }
+
+ pinfo.lms = lms;
+
+ if (_create_pipes(&pinfo) != 0) {
+ r = -5;
+ goto end;
+ }
+
+ if (_create_slave(&pinfo) != 0) {
+ r = -6;
+ goto close_pipes;
+ }
+
+ if (realpath(top_path, path) == NULL) {
+ perror("realpath");
+ r = -7;
+ goto finish_slave;
+ }
+
+ /* search '/' backwards, split dirname and basename, note realpath usage */
+ len = strlen(path);
+ for (; len >= 0 && path[len] != '/'; len--);
+ len++;
+ bname = strdup(path + len);
+ if (bname == NULL) {
+ perror("strdup");
+ r = -8;
+ goto finish_slave;
+ }
+
+ lms->is_processing = 1;
+ r = _process_dir(&pinfo, len, path, bname);
+ lms->is_processing = 0;
+ free(bname);
+
+ finish_slave:
+ _finish_slave(&pinfo);
+ close_pipes:
+ _close_pipes(&pinfo);
+ end:
+ return r;
+}
+
+int
+lms_is_processing(const lms_t *lms)
+{
+ return lms->is_processing;
+}
--- /dev/null
+/**
+ * Copyright (C) 2007 by INdT
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is 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 Lesser General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * @author Gustavo Sverzut Barbieri <gustavo.barbieri@openbossa.org>
+ */
+
+#ifndef _LIGHTMEDIASCANNER_H_
+#define _LIGHTMEDIASCANNER_H_ 1
+
+#ifdef API
+#undef API
+#endif
+
+#ifdef __GNUC__
+# if __GNUC__ >= 4
+# define API __attribute__ ((visibility("default")))
+# define GNUC_NULL_TERMINATED __attribute__((__sentinel__))
+# else
+# define API
+# define GNUC_NULL_TERMINATED
+# endif
+# if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96)
+# define GNUC_PURE __attribute__((__pure__))
+# define GNUC_MALLOC __attribute__((__malloc__))
+# define GNUC_CONST __attribute__((__const__))
+# define GNUC_UNUSED __attribute__((__unused__))
+# else
+# define GNUC_PURE
+# define GNUC_MALLOC
+# define GNUC_NORETURN
+# define GNUC_CONST
+# define GNUC_UNUSED
+# endif
+# if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
+# define GNUC_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
+# define GNUC_NON_NULL(...) __attribute__((nonnull(__VA_ARGS__)))
+# else
+# define GNUC_WARN_UNUSED_RESULT
+# define GNUC_NON_NULL(...)
+# endif
+#else
+# define API
+# define GNUC_NULL_TERMINATED
+# define GNUC_PURE
+# define GNUC_MALLOC
+# define GNUC_CONST
+# define GNUC_UNUSED
+# define GNUC_WARN_UNUSED_RESULT
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+ typedef struct lms lms_t;
+ typedef struct lms_plugin lms_plugin_t;
+
+ API lms_t *lms_new(void) GNUC_MALLOC GNUC_WARN_UNUSED_RESULT;
+ API int lms_free(lms_t *lms) GNUC_NON_NULL(1);
+ API int lms_process(lms_t *lms, const char *top_path) GNUC_NON_NULL(1, 2);
+ API int lms_is_processing(const lms_t *lms) GNUC_PURE GNUC_NON_NULL(1);
+
+ API lms_plugin_t *lms_parser_add(lms_t *lms, const char *so_path) GNUC_NON_NULL(1, 2);
+ API lms_plugin_t *lms_parser_find_and_add(lms_t *lms, const char *name) GNUC_NON_NULL(1, 2);
+ API int lms_parser_del(lms_t *lms, lms_plugin_t *handle) GNUC_NON_NULL(1, 2);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* _LIGHTMEDIASCANNER_H_ */
--- /dev/null
+/**
+ * Copyright (C) 2007 by INdT
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is 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 Lesser General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * @author Gustavo Sverzut Barbieri <gustavo.barbieri@openbossa.org>
+ */
+
+#ifndef _LIGHTMEDIASCANNER_PLUGIN_H_
+#define _LIGHTMEDIASCANNER_PLUGIN_H_ 1
+
+#ifdef API
+#undef API
+#endif
+
+#ifdef __GNUC__
+# if __GNUC__ >= 4
+# define API __attribute__ ((visibility("default")))
+# else
+# define API
+# endif
+#else
+# define API
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+ struct lms_plugin {
+ const char *name;
+ int (*parse)(struct lms_plugin *p, const char *path, int len, int base);
+ int (*close)(struct lms_plugin *p);
+ };
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* _LIGHTMEDIASCANNER_PLUGIN_H_ */
--- /dev/null
+MAINTAINERCLEANFILES = Makefile.in
+
+SUBDIRS = dummy
--- /dev/null
+MAINTAINERCLEANFILES = Makefile.in
+
+AM_CPPFLAGS = -I$(top_srcdir)/src/lib -I$(top_srcdir)/src/plugins/dummy
+
+pkgdir = $(pluginsdir)
+pkg_LTLIBRARIES = dummy.la
+dummy_la_SOURCES = dummy.c
+dummy_la_DEPENDENCIES = $(top_builddir)/config.h
+dummy_la_LIBADD = $(top_builddir)/src/lib/liblightmediascanner.la
+dummy_la_LDFLAGS = -module -avoid-version
--- /dev/null
+/**
+ * Copyright (C) 2007 by INdT
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is 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 Lesser General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * @author Gustavo Sverzut Barbieri <gustavo.barbieri@openbossa.org>
+ */
+
+/**
+ * @brief
+ *
+ * Dummy plugin demonstrating the basic lightmediascanner_plugin API,
+ * it just write paths to /tmp/dummy.log.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#define _XOPEN_SOURCE 600
+#include <lightmediascanner_plugin.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+static const char _name[] = "dummy";
+
+struct plugin {
+ struct lms_plugin plugin;
+ int fd;
+};
+
+static int
+_parse(struct lms_plugin *p, const char *path, int len, int base)
+{
+ struct plugin *plugin = (struct plugin *)p;
+
+ write(plugin->fd, path, len);
+ write(plugin->fd, "\n", 1);
+ return 0;
+}
+
+static int
+_close(struct lms_plugin *p)
+{
+ struct plugin *plugin = (struct plugin *)p;
+
+ if (close(plugin->fd) != 0)
+ perror("close");
+
+ free(plugin);
+ return 0;
+}
+
+API struct lms_plugin *
+lms_plugin_open(void)
+{
+ struct plugin *plugin;
+ char logfile[PATH_MAX];
+
+ snprintf(logfile, sizeof(logfile), "/tmp/dummy-%d.log", getuid());
+
+ plugin = malloc(sizeof(*plugin));
+ plugin->plugin.name = _name;
+ plugin->plugin.parse = _parse;
+ plugin->plugin.close = _close;
+ plugin->fd = open(logfile, O_WRONLY | O_CREAT, 0600);
+ if (plugin->fd < 0) {
+ perror("open");
+ free(plugin);
+ return NULL;
+ }
+
+ return (struct lms_plugin *)plugin;
+}
projects / platform / upstream / lightmediascanner.git / commitdiff