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#include <fcntl.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "types/types.h"
#include <log/log.h>
#include <talloc/talloc.h>
#include "device-handler.h"
#include "parser.h"
#include "parser-utils.h"
#include "paths.h"
#include "file.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->mount_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_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;
}
static int download_config(struct discover_context *ctx, char **buf, int *len)
{
struct load_url_result *result;
int rc;
result = load_url(ctx, ctx->conf_url);
if (!result)
return -1;
rc = read_file(ctx, result->local, buf, len);
if (rc)
goto out_clean;
return 0;
out_clean:
if (result->cleanup_local)
unlink(result->local);
return -1;
}
static void iterate_parser_files(struct discover_context *ctx,
const struct parser *parser)
{
const char * const *filename;
const char *path;
if (!parser->filenames)
return;
for (filename = parser->filenames; *filename; filename++) {
int rc, len;
char *buf;
path = local_path(ctx, ctx->device, *filename);
if (!path)
continue;
rc = read_file(ctx, path, &buf, &len);
if (!rc) {
pb_log("Running parser %s on file %s\n",
parser->name, *filename);
parser->parse(ctx, buf, len);
talloc_free(buf);
}
}
}
void iterate_parsers(struct discover_context *ctx, enum conf_method method)
{
struct p_item* i;
int rc, len;
char *buf;
pb_log("trying parsers for %s\n", ctx->device->device->id);
switch (method) {
case CONF_METHOD_LOCAL_FILE:
list_for_each_entry(&parsers, i, list) {
if (i->parser->method != CONF_METHOD_LOCAL_FILE)
continue;
pb_log("\ttrying parser '%s'\n", i->parser->name);
ctx->parser = i->parser;
iterate_parser_files(ctx, ctx->parser);
}
ctx->parser = NULL;
break;
case CONF_METHOD_DHCP:
rc = download_config(ctx, &buf, &len);
if (rc) {
pb_log("\tdownload failed, aborting\n");
return;
}
list_for_each_entry(&parsers, i, list) {
if (i->parser->method != method)
continue;
pb_log("\ttrying parser '%s'\n", i->parser->name);
ctx->parser = i->parser;
i->parser->parse(ctx, buf, len);
}
break;
case CONF_METHOD_UNKNOWN:
break;
}
}
void __register_parser(struct parser *parser)
{
struct p_item* i = talloc(NULL, struct p_item);
printf("%s: %s\n", __func__, parser->name);
i->parser = parser;
list_add(&parsers, &i->list);
}
void parser_init(void)
{
}
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