xbps-fetch(1): new utility that replaces 'xbps-uhelper fetch'.

xbps-install(1): document all libfetch env vars. Signed-off-by: Juan RP <xtraeme@gmail.com>
2019-06-12 17:57:03 +02:00
parent 9cda7ef72a
commit 8cea3e351b
21 changed files with 314 additions and 48 deletions
--- a/bin/xbps-fetch/main.c
+++ b/bin/xbps-fetch/main.c
@ -0,0 +1,134 @@
+/*-
+ * Copyright (c) 2019 Juan Romero Pardines.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ *
+ * 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.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <strings.h>
+#include <errno.h>
+#include <unistd.h>
+#include <getopt.h>
+
+#include <xbps.h>
+#include "../xbps-install/defs.h"
+
+static void __attribute__((noreturn))
+usage(void)
+{
+	fprintf(stdout,
+	"Usage: xbps-fetch [options] <url> <url+N>\n\n"
+	"OPTIONS:\n"
+	" -d\t\tEnable debug messages to stderr\n"
+	" -h\t\tShow usage()\n"
+	" -o <file>\tRename downloaded file to <file>\n"
+	" -v\t\tEnable verbose output\n"
+	" -V\t\tPrints the xbps release version\n");
+	exit(EXIT_FAILURE);
+}
+
+static char *
+fname(char *url)
+{
+	char *filename;
+
+	if ((filename = strrchr(url, '>'))) {
+		*filename = '\0';
+	} else {
+		filename = strrchr(url, '/');
+	}
+	if (filename == NULL)
+		return NULL;
+	return filename + 1;
+}
+
+int
+main(int argc, char **argv)
+{
+	int flags = 0, c = 0, rv = 0;
+	bool verbose = false;
+	struct xbps_handle xh = {};
+	struct xferstat xfer = {};
+	const char *filename = NULL, *progname = argv[0];
+	const struct option longopts[] = {
+		{ NULL, 0, NULL, 0 }
+	};
+
+	while ((c = getopt_long(argc, argv, "o:dhVv", longopts, NULL)) != -1) {
+		switch (c) {
+		case 'o':
+			filename = optarg;
+			break;
+		case 'd':
+			flags |= XBPS_FLAG_DEBUG;
+			break;
+		case 'v':
+			verbose = true;
+			break;
+		case 'V':
+			printf("%s\n", XBPS_RELVER);
+			exit(EXIT_SUCCESS);
+		case '?':
+		case 'h':
+		default:
+			usage();
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	if (!argc)
+		usage();
+
+	/*
+	* Initialize libxbps.
+	*/
+	xh.flags = flags;
+	xh.fetch_cb = fetch_file_progress_cb;
+	xh.fetch_cb_data = &xfer;
+	if ((rv = xbps_init(&xh)) != 0) {
+		xbps_error_printf("%s: failed to initialize libxbps: %s\n",
+		    progname, strerror(rv));
+		exit(EXIT_FAILURE);
+	}
+
+	for (int i = 0; i < argc; i++) {
+		if ((argc == 1) && !filename)
+			filename = fname(argv[i]);
+
+		rv = xbps_fetch_file_dest(&xh, argv[i], filename, verbose ? "v" : "");
+
+		if (rv == -1) {
+			fprintf(stderr, "%s: %s\n", argv[i], xbps_fetch_error_string());
+		} else if (rv == 0) {
+			printf("%s: file is identical with remote.\n", argv[i]);
+		} else {
+			rv = 0;
+		}
+	}
+
+	xbps_end(&xh);
+	exit(rv ? EXIT_FAILURE : EXIT_SUCCESS);
+}