HelenOS sources

root/uspace/app/pkg/pkg.c

DEFINITIONS

1. print_syntax
2. cmd_runl
3. pkg_install
4. main

/*
 * Copyright (c) 2017 Jiri Svoboda
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/** @addtogroup pkg
 * @{
 */
/** @file Package installer
 *
 * Utility to simplify installation of coastline packages
 */

#include <errno.h>
#include <macros.h>
#include <stdio.h>
#include <stdlib.h>
#include <str.h>
#include <str_error.h>
#include <task.h>

#define NAME "pkg"

static void print_syntax(void)
{
        fprintf(stderr, "syntax: " NAME " install <package-name>\n");
}

static errno_t cmd_runl(const char *path, ...)
{
        va_list ap;
        const char *arg;
        int cnt = 0;

        va_start(ap, path);
        do {
                arg = va_arg(ap, const char *);
                cnt++;
        } while (arg != NULL);
        va_end(ap);

        va_start(ap, path);
        task_id_t id;
        task_wait_t wait;
        errno_t rc = task_spawn(&id, &wait, path, cnt, ap);
        va_end(ap);

        if (rc != EOK) {
                printf("Error spawning %s (%s)\n", path, str_error(rc));
                return rc;
        }

        if (!id) {
                printf("Error spawning %s (invalid task ID)\n", path);
                return EINVAL;
        }

        task_exit_t texit;
        int retval;
        rc = task_wait(&wait, &texit, &retval);
        if (rc != EOK) {
                printf("Error waiting for %s (%s)\n", path, str_error(rc));
                return rc;
        }

        if (texit != TASK_EXIT_NORMAL) {
                printf("Command %s unexpectedly terminated\n", path);
                return EINVAL;
        }

        if (retval != 0) {
                printf("Command %s returned non-zero exit code %d)\n",
                    path, retval);
        }

        return retval == 0 ? EOK : EPARTY;
}

static errno_t pkg_install(int argc, char *argv[])
{
        char *pkg_name;
        char *src_uri;
        char *fname;
        char *fnunpack;
        errno_t rc;
        int ret;

        if (argc != 3) {
                print_syntax();
                return EINVAL;
        }

        pkg_name = argv[2];

        ret = asprintf(&src_uri, "http://ci.helenos.org/latest/" STRING(UARCH)
            "/%s-for-helenos-" STRING(UARCH) ".tar.gz",
            pkg_name);
        if (ret < 0) {
                printf("Out of memory.\n");
                return ENOMEM;
        }

        ret = asprintf(&fname, "/tmp/%s-for-helenos-" STRING(UARCH)
            ".tar.gz", pkg_name);
        if (ret < 0) {
                printf("Out of memory.\n");
                return ENOMEM;
        }

        ret = asprintf(&fnunpack, "/tmp/%s-for-helenos-" STRING(UARCH) ".tar",
            pkg_name);
        if (ret < 0) {
                printf("Out of memory.\n");
                return ENOMEM;
        }
        /* XXX error cleanup */

        printf("Downloading '%s'.\n", src_uri);

        rc = cmd_runl("/app/download", "/app/download", "-o", fname,
            src_uri, NULL);
        if (rc != EOK) {
                printf("Error downloading package archive.\n");
                return rc;
        }

        printf("Extracting package\n");

        rc = cmd_runl("/app/gunzip", "/app/gunzip", fname, fnunpack, NULL);
        if (rc != EOK) {
                printf("Error uncompressing package archive.\n");
                return rc;
        }

        if (remove(fname) != 0) {
                printf("Error deleting package archive.\n");
                return rc;
        }

        rc = cmd_runl("/app/untar", "/app/untar", fnunpack, NULL);
        if (rc != EOK) {
                printf("Error extracting package archive.\n");
                return rc;
        }

        if (remove(fnunpack) != 0) {
                printf("Error deleting package archive.\n");
                return rc;
        }

        printf("Package '%s' installed.\n", pkg_name);

        return EOK;
}

int main(int argc, char *argv[])
{
        char *cmd;
        errno_t rc;

        if (argc < 2) {
                fprintf(stderr, "Arguments missing.\n");
                print_syntax();
                return 1;
        }

        cmd = argv[1];

        if (str_cmp(cmd, "install") == 0) {
                rc = pkg_install(argc, argv);
        } else {
                fprintf(stderr, "Unknown command.\n");
                print_syntax();
                return 1;
        }

        if (rc != EOK)
                return 1;

        return 0;
}

/** @}
 */