#include <stdlib.h>
#include <talloc/talloc.h>
+#include <system/system.h>
+#include <url/url.h>
+#include <log/log.h>
#include "paths.h"
}
char *parse_device_path(void *alloc_ctx,
- const char *dev_str, const char *cur_dev)
+ const char *dev_str, const char __attribute__((unused)) *cur_dev)
{
- char *dev, tmp[256], *enc;
+ char *dev, *enc;
if (is_prefix_ignorecase(dev_str, "uuid=")) {
dev = talloc_asprintf(alloc_ctx, "/dev/disk/by-uuid/%s",
return full_path;
}
+
+static char *local_name(void *ctx)
+{
+ char *tmp, *ret;
+
+ tmp = tempnam(NULL, "pb-");
+
+ if (!tmp)
+ return NULL;
+
+ ret = talloc_strdup(ctx, tmp);
+ free(tmp);
+
+ return ret;
+}
+
+/**
+ * pb_load_nfs - Mounts the NFS export and returns the local file path.
+ *
+ * Returns the local file path in a talloc'ed character string on success,
+ * or NULL on error.
+ */
+static char *load_nfs(void *ctx, struct pb_url *url)
+{
+ int result;
+ const char *argv[8];
+ const char **p;
+ char *local;
+ char *opts;
+
+ local = local_name(ctx);
+
+ if (!local)
+ return NULL;
+
+ result = pb_mkdir_recursive(local);
+
+ if (result)
+ goto fail;
+
+ opts = talloc_strdup(NULL, "ro,nolock,nodiratime");
+
+ if (url->port)
+ opts = talloc_asprintf_append(opts, ",port=%s", url->port);
+
+ p = argv;
+ *p++ = pb_system_apps.mount; /* 1 */
+ *p++ = "-t"; /* 2 */
+ *p++ = "nfs"; /* 3 */
+ *p++ = opts; /* 4 */
+ *p++ = url->host; /* 5 */
+ *p++ = url->dir; /* 6 */
+ *p++ = local; /* 7 */
+ *p++ = NULL; /* 8 */
+
+ result = pb_run_cmd(argv, 1, 0);
+
+ talloc_free(opts);
+
+ if (result)
+ goto fail;
+
+ local = talloc_asprintf_append(local, "/%s", url->path);
+ pb_log("%s: local '%s'\n", __func__, local);
+
+ return local;
+
+fail:
+ pb_rmdir_recursive("/", local);
+ talloc_free(local);
+ return NULL;
+}
+
+/**
+ * pb_load_sftp - Loads a remote file via sftp and returns the local file path.
+ *
+ * Returns the local file path in a talloc'ed character string on success,
+ * or NULL on error.
+ */
+static char *load_sftp(void *ctx, struct pb_url *url)
+{
+ int result;
+ const char *argv[4];
+ const char **p;
+ char *local;
+
+ local = local_name(ctx);
+
+ if (!local)
+ return NULL;
+
+ p = argv;
+ *p++ = pb_system_apps.sftp; /* 1 */
+ *p++ = talloc_asprintf(local, "%s:%s", url->host, url->path); /* 2 */
+ *p++ = local; /* 3 */
+ *p++ = NULL; /* 4 */
+
+ result = pb_run_cmd(argv, 1, 0);
+
+ if (result)
+ goto fail;
+
+ return local;
+
+fail:
+ talloc_free(local);
+ return NULL;
+}
+
+/**
+ * pb_load_tftp - Loads a remote file via tftp and returns the local file path.
+ *
+ * Returns the local file path in a talloc'ed character string on success,
+ * or NULL on error.
+ */
+
+static char *load_tftp(void *ctx, struct pb_url *url)
+{
+ int result;
+ const char *argv[10];
+ const char **p;
+ char *local;
+
+ local = local_name(ctx);
+
+ if (!local)
+ return NULL;
+
+ /* first try busybox tftp args */
+
+ p = argv;
+ *p++ = pb_system_apps.tftp; /* 1 */
+ *p++ = "-g"; /* 2 */
+ *p++ = "-l"; /* 3 */
+ *p++ = local; /* 4 */
+ *p++ = "-r"; /* 5 */
+ *p++ = url->path; /* 6 */
+ *p++ = url->host; /* 7 */
+ if (url->port)
+ *p++ = url->port; /* 8 */
+ *p++ = NULL; /* 9 */
+
+ result = pb_run_cmd(argv, 1, 0);
+
+ if (!result)
+ return local;
+
+ /* next try tftp-hpa args */
+
+ p = argv;
+ *p++ = pb_system_apps.tftp; /* 1 */
+ *p++ = "-m"; /* 2 */
+ *p++ = "binary"; /* 3 */
+ *p++ = url->host; /* 4 */
+ if (url->port)
+ *p++ = url->port; /* 5 */
+ *p++ = "-c"; /* 6 */
+ *p++ = "get"; /* 7 */
+ *p++ = url->path; /* 8 */
+ *p++ = local; /* 9 */
+ *p++ = NULL; /* 10 */
+
+ result = pb_run_cmd(argv, 1, 0);
+
+ if (!result)
+ return local;
+
+ talloc_free(local);
+ return NULL;
+}
+
+enum wget_flags {
+ wget_empty = 0,
+ wget_no_check_certificate = 1,
+};
+
+/**
+ * pb_load_wget - Loads a remote file via wget and returns the local file path.
+ *
+ * Returns the local file path in a talloc'ed character string on success,
+ * or NULL on error.
+ */
+
+static char *load_wget(void *ctx, struct pb_url *url, enum wget_flags flags)
+{
+ int result;
+ const char *argv[7];
+ const char **p;
+ char *local;
+
+ local = local_name(ctx);
+
+ if (!local)
+ return NULL;
+
+ p = argv;
+ *p++ = pb_system_apps.wget; /* 1 */
+#if !defined(DEBUG)
+ *p++ = "--quiet"; /* 2 */
+#endif
+ *p++ = "-O"; /* 3 */
+ *p++ = local; /* 4 */
+ *p++ = url->full; /* 5 */
+ if (flags & wget_no_check_certificate)
+ *p++ = "--no-check-certificate"; /* 6 */
+ *p++ = NULL; /* 7 */
+
+ result = pb_run_cmd(argv, 1, 0);
+
+ if (result)
+ goto fail;
+
+ return local;
+
+fail:
+ talloc_free(local);
+ return NULL;
+}
+
+/**
+ * pb_load_file - Loads a (possibly) remote file and returns the local file
+ * path.
+ * @ctx: The talloc context to associate with the returned string.
+ * @remote: The remote file URL.
+ * @tempfile: An optional variable pointer to be set when a temporary local
+ * file is created.
+ *
+ * Returns the local file path in a talloc'ed character string on success,
+ * or NULL on error.
+ */
+
+char *load_file(void *ctx, const char *remote, unsigned int *tempfile)
+{
+ struct pb_url *url = pb_url_parse(ctx, remote);
+ char *local;
+ int tmp = 0;
+
+ if (!url)
+ return NULL;
+
+ switch (url->scheme) {
+ case pb_url_ftp:
+ case pb_url_http:
+ local = load_wget(ctx, url, 0);
+ tmp = !!local;
+ break;
+ case pb_url_https:
+ local = load_wget(ctx, url, wget_no_check_certificate);
+ tmp = !!local;
+ break;
+ case pb_url_nfs:
+ local = load_nfs(ctx, url);
+ tmp = !!local;
+ break;
+ case pb_url_sftp:
+ local = load_sftp(ctx, url);
+ tmp = !!local;
+ break;
+ case pb_url_tftp:
+ local = load_tftp(ctx, url);
+ tmp = !!local;
+ break;
+ default:
+ local = talloc_strdup(ctx, url->full);
+ tmp = 0;
+ break;
+ }
+
+ if (tempfile)
+ *tempfile = tmp;
+
+ talloc_free(url);
+ return local;
+}
projects / petitboot / blobdiff