#include <stdlib.h>
#include <talloc/talloc.h>
+#include <system/system.h>
+#include <process/process.h>
+#include <url/url.h>
+#include <log/log.h>
#include "paths.h"
#define DEVICE_MOUNT_BASE (LOCAL_STATE_DIR "/petitboot/mnt")
-struct mount_map {
- char *dev, *mnt;
+struct load_url_async_data {
+ load_url_callback url_cb;
+ void *ctx;
};
-static struct mount_map *mount_map;
-static int mount_map_size;
-
-static int is_prefix(const char *str, const char *prefix)
+const char *mount_base(void)
{
- return !strncmp(str, prefix, strlen(prefix));
+ return DEVICE_MOUNT_BASE;
}
-static int is_prefix_ignorecase(const char *str, const char *prefix)
+char *join_paths(void *alloc_ctx, const char *a, const char *b)
{
- return !strncasecmp(str, prefix, strlen(prefix));
+ char *full_path;
+
+ full_path = talloc_array(alloc_ctx, char, strlen(a) + strlen(b) + 2);
+
+ strcpy(full_path, a);
+ if (b[0] != '/' && a[strlen(a) - 1] != '/')
+ strcat(full_path, "/");
+ strcat(full_path, b);
+
+ return full_path;
}
-const char *mount_base(void)
+
+static char *local_name(void *ctx)
{
- return DEVICE_MOUNT_BASE;
+ char *tmp, *ret;
+
+ tmp = tempnam(NULL, "pb-");
+
+ if (!tmp)
+ return NULL;
+
+ ret = talloc_strdup(ctx, tmp);
+ free(tmp);
+
+ return ret;
}
-char *encode_label(void *alloc_ctx, const char *label)
+static void load_url_exit_cb(struct process *process)
{
- char *str, *c;
- int i;
+ struct load_url_async_data *url_data = process->data;
- /* the label can be expanded by up to four times */
- str = talloc_size(alloc_ctx, strlen(label) * 4 + 1);
- c = str;
+ pb_log("The download client '%s' [pid %d] exited, rc %d\n",
+ process->path, process->pid, process->exit_status);
- for (i = 0; i < strlen(label); i++) {
+ url_data->url_cb(url_data->ctx, process->exit_status);
- if (label[i] == '/' || label[i] == '\\') {
- sprintf(c, "\\x%02x", label[i]);
- c += 4;
- continue;
- }
+ process_release(process);
+}
- *(c++) = label[i];
+/**
+ * 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,
+ struct load_url_async_data *url_data)
+{
+ char *local, *opts;
+ int result;
+ struct process *process;
+ const char *argv[] = {
+ pb_system_apps.mount,
+ "-t", "nfs",
+ NULL,
+ url->host,
+ url->dir,
+ NULL,
+ NULL,
+ };
+
+ local = local_name(ctx);
+ if (!local)
+ return NULL;
+ argv[6] = local;
+
+ result = pb_mkdir_recursive(local);
+ if (result)
+ goto fail;
+
+ opts = talloc_strdup(NULL, "ro,nolock,nodiratime");
+ argv[3] = opts;
+
+ if (url->port)
+ opts = talloc_asprintf_append(opts, ",port=%s", url->port);
+
+ if (url_data) {
+ process = process_create(ctx);
+
+ process->path = pb_system_apps.mount;
+ process->argv = argv;
+ process->exit_cb = load_url_exit_cb;
+ process->data = url_data;
+
+ result = process_run_async(process);
+ if (result)
+ process_release(process);
+ } else {
+ result = process_run_simple_argv(ctx, argv);
}
- *c = '\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 str;
+ return local;
+
+fail:
+ pb_rmdir_recursive("/", local);
+ talloc_free(local);
+ return NULL;
}
-char *parse_device_path(void *alloc_ctx,
- const char *dev_str, const char *cur_dev)
+/**
+ * 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,
+ struct load_url_async_data *url_data)
{
- char *dev, tmp[256], *enc;
-
- if (is_prefix_ignorecase(dev_str, "uuid=")) {
- dev = talloc_asprintf(alloc_ctx, "/dev/disk/by-uuid/%s",
- dev_str + strlen("uuid="));
- return dev;
+ char *host_path, *local;
+ int result;
+ struct process *process;
+ const char *argv[] = {
+ pb_system_apps.sftp,
+ NULL,
+ NULL,
+ NULL,
+ };
+
+ local = local_name(ctx);
+ if (!local)
+ return NULL;
+ argv[2] = local;
+
+ host_path = talloc_asprintf(local, "%s:%s", url->host, url->path);
+ argv[1] = host_path;
+
+ if (url_data) {
+ process = process_create(ctx);
+
+ process->path = pb_system_apps.sftp;
+ process->argv = argv;
+ process->exit_cb = load_url_exit_cb;
+ process->data = url_data;
+
+ result = process_run_async(process);
+ if (result)
+ process_release(process);
+ } else {
+ result = process_run_simple_argv(ctx, argv);
}
- if (is_prefix_ignorecase(dev_str, "label=")) {
- enc = encode_label(NULL, dev_str + strlen("label="));
- dev = talloc_asprintf(alloc_ctx, "/dev/disk/by-label/%s", enc);
- talloc_free(enc);
- return dev;
- }
+ if (result)
+ goto fail;
- /* normalise '/dev/foo' to 'foo' for easy comparisons, we'll expand
- * back before returning.
- */
- if (is_prefix(dev_str, "/dev/"))
- dev_str += strlen("/dev/");
-
- /* PS3 hack: if we're reading from a ps3dx device, and we refer to
- * a sdx device, remap to ps3dx */
- if (cur_dev && is_prefix(cur_dev, "/dev/ps3d")
- && is_prefix(dev_str, "sd")) {
- snprintf(tmp, 255, "ps3d%s", dev_str + 2);
- dev_str = tmp;
- }
+ return local;
- return join_paths(alloc_ctx, "/dev", dev_str);
+fail:
+ talloc_free(local);
+ return NULL;
}
-const char *mountpoint_for_device(const char *dev)
-{
- int i;
+/**
+ * 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.
+ */
- if (is_prefix(dev, "/dev/"))
- dev += strlen("/dev/");
+static char *load_tftp(void *ctx, struct pb_url *url,
+ struct load_url_async_data *url_data)
+{
+ int result;
+ const char *argv[10];
+ const char **p;
+ char *local;
+ struct process *process;
+
+ 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 */
+
+ if (url_data) {
+ process = process_create(ctx);
+
+ process->path = pb_system_apps.tftp;
+ process->argv = argv;
+ process->exit_cb = load_url_exit_cb;
+ process->data = url_data;
+
+ result = process_run_async(process);
+ } else {
+ result = process_run_simple_argv(ctx, argv);
+ }
- /* check existing entries in the map */
- for (i = 0; i < mount_map_size; i++)
- if (!strcmp(mount_map[i].dev, dev))
- return mount_map[i].mnt;
+ 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 */
+
+ if (url_data) {
+ process->argv = argv;
+ result = process_run_async(process);
+ if (result)
+ process_release(process);
+ } else {
+ result = process_run_simple_argv(ctx, argv);
+ }
- /* no existing entry, create a new one */
- i = mount_map_size++;
- mount_map = talloc_realloc(NULL, mount_map,
- struct mount_map, mount_map_size);
+ if (!result)
+ return local;
- mount_map[i].dev = talloc_strdup(mount_map, dev);
- mount_map[i].mnt = join_paths(mount_map, DEVICE_MOUNT_BASE, dev);
- return mount_map[i].mnt;
+ talloc_free(local);
+ return NULL;
}
-char *resolve_path(void *alloc_ctx, const char *path, const char *current_dev)
-{
- char *ret;
- const char *devpath, *sep;
+enum wget_flags {
+ wget_empty = 0,
+ wget_no_check_certificate = 1,
+};
- sep = strchr(path, ':');
- if (!sep) {
- devpath = mountpoint_for_device(current_dev);
- ret = join_paths(alloc_ctx, devpath, path);
+/**
+ * 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,
+ struct load_url_async_data *url_data)
+{
+ int result;
+ const char *argv[7];
+ const char **p;
+ char *local;
+ struct process *process;
+
+ 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 */
+
+ if (url_data) {
+ process = process_create(ctx);
+
+ process->path = pb_system_apps.wget;
+ process->argv = argv;
+ process->exit_cb = load_url_exit_cb;
+ process->data = url_data;
+
+ result = process_run_async(process);
+ if (result)
+ process_release(process);
} else {
- /* parse just the device name into dev */
- char *tmp, *dev;
- tmp = talloc_strndup(NULL, path, sep - path);
- dev = parse_device_path(NULL, tmp, current_dev);
+ result = process_run_simple_argv(ctx, argv);
+ }
- devpath = mountpoint_for_device(dev);
- ret = join_paths(alloc_ctx, devpath, sep + 1);
+ if (result)
+ goto fail;
- talloc_free(dev);
- talloc_free(tmp);
- }
+ return local;
- return ret;
+fail:
+ talloc_free(local);
+ return NULL;
}
-char *join_paths(void *alloc_ctx, const char *a, const char *b)
+/**
+ * load_url - Loads a (possibly) remote URL and returns the local file
+ * path.
+ * @ctx: The talloc context to associate with the returned string.
+ * @url: The remote file URL.
+ * @tempfile: An optional variable pointer to be set when a temporary local
+ * file is created.
+ * @url_cb: An optional callback pointer if the caller wants to load url
+ * asynchronously.
+ *
+ * Returns the local file path in a talloc'ed character string on success,
+ * or NULL on error.
+ */
+
+char *load_url_async(void *ctx, struct pb_url *url, unsigned int *tempfile,
+ load_url_callback url_cb)
{
- char *full_path;
+ char *local;
+ int tmp = 0;
+ struct load_url_async_data *url_data;
- full_path = talloc_array(alloc_ctx, char, strlen(a) + strlen(b) + 2);
+ if (!url)
+ return NULL;
- strcpy(full_path, a);
- if (b[0] != '/' && a[strlen(a) - 1] != '/')
- strcat(full_path, "/");
- strcat(full_path, b);
+ url_data = NULL;
- return full_path;
+ if (url_cb) {
+ url_data = talloc_zero(ctx, struct load_url_async_data);
+ url_data->url_cb = url_cb;
+ url_data->ctx = ctx;
+ }
+
+ switch (url->scheme) {
+ case pb_url_ftp:
+ case pb_url_http:
+ local = load_wget(ctx, url, 0, url_data);
+ tmp = !!local;
+ break;
+ case pb_url_https:
+ local = load_wget(ctx, url, wget_no_check_certificate,
+ url_data);
+ tmp = !!local;
+ break;
+ case pb_url_nfs:
+ local = load_nfs(ctx, url, url_data);
+ tmp = !!local;
+ break;
+ case pb_url_sftp:
+ local = load_sftp(ctx, url, url_data);
+ tmp = !!local;
+ break;
+ case pb_url_tftp:
+ local = load_tftp(ctx, url, url_data);
+ tmp = !!local;
+ break;
+ default:
+ local = talloc_strdup(ctx, url->full);
+ tmp = 0;
+ break;
+ }
+
+ if (tempfile)
+ *tempfile = tmp;
+
+ return local;
}
+char *load_url(void *ctx, struct pb_url *url, unsigned int *tempfile)
+{
+ return load_url_async(ctx, url, tempfile, NULL);
+}
projects / petitboot / blobdiff