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#include <fcntl.h>
#include <stdlib.h>
#include "types/types.h"
#include <file/file.h>
#include <log/log.h>
#include <talloc/talloc.h>
#include "device-handler.h"
#include "parser.h"
#include "parser-utils.h"
#include "paths.h"
struct p_item {
struct list_item list;
struct parser *parser;
};
STATIC_LIST(parsers);
static char *local_path(struct discover_context *ctx,
struct discover_device *dev,
const char *filename)
{
return join_paths(ctx, dev->root_path, filename);
}
int parser_request_file(struct discover_context *ctx,
struct discover_device *dev, const char *filename,
char **buf, int *len)
{
char *path;
int rc;
/* we only support local files at present */
if (!dev->mount_path)
return -1;
path = local_path(ctx, dev, filename);
rc = read_file(ctx, path, buf, len);
talloc_free(path);
return rc;
}
int parser_stat_path(struct discover_context *ctx,
struct discover_device *dev, const char *path,
struct stat *statbuf)
{
int rc = -1;
char *full_path;
/* we only support local files at present */
if (!dev->mount_path)
return -1;
full_path = local_path(ctx, dev, path);
rc = stat(full_path, statbuf);
if (rc) {
rc = -1;
goto out;
}
rc = 0;
out:
talloc_free(full_path);
return rc;
}
int parser_replace_file(struct discover_context *ctx,
struct discover_device *dev, const char *filename,
char *buf, int len)
{
bool release;
char *path;
int rc;
if (!dev->mounted)
return -1;
rc = device_request_write(dev, &release);
if (rc) {
pb_log("Can't write file %s: device doesn't allow write\n",
dev->device_path);
return -1;
}
path = local_path(ctx, dev, filename);
rc = replace_file(path, buf, len);
talloc_free(path);
device_release_write(dev, release);
return rc;
}
int parser_request_url(struct discover_context *ctx, struct pb_url *url,
char **buf, int *len)
{
struct load_url_result *result;
int rc;
result = load_url(ctx, url);
if (!result)
goto out;
rc = read_file(ctx, result->local, buf, len);
if (rc) {
pb_log("Read failed for the parser %s on file %s\n",
ctx->parser->name, result->local);
goto out_clean;
}
return 0;
out_clean:
if (result->cleanup_local)
unlink(result->local);
out:
return -1;
}
void iterate_parsers(struct discover_context *ctx)
{
struct p_item* i;
pb_log("trying parsers for %s\n", ctx->device->device->id);
list_for_each_entry(&parsers, i, list) {
pb_debug("\ttrying parser '%s'\n", i->parser->name);
ctx->parser = i->parser;
i->parser->parse(ctx);
}
ctx->parser = NULL;
}
static void *parsers_ctx;
void __register_parser(struct parser *parser)
{
struct p_item *i;
if (!parsers_ctx)
parsers_ctx = talloc_new(NULL);
i = talloc(parsers_ctx, struct p_item);
i->parser = parser;
list_add(&parsers, &i->list);
}
static __attribute__((destructor)) void cleanup_parsers(void)
{
talloc_free(parsers_ctx);
}
void parser_init(void)
{
}
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