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authorTimo Teras <timo.teras@iki.fi>2008-11-28 15:03:27 +0200
committerTimo Teras <timo.teras@iki.fi>2008-11-28 15:03:27 +0200
commit4bafa681feb2b902553e26fd88df0f06b0c0778a (patch)
treea1d1ee116c71ac59572c040f05603380e581848b /src/url.c
parent5ea81ca564534e4ef5eefbe723a74dbf490e6e07 (diff)
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io: prepartions for url handling
Diffstat (limited to 'src/url.c')
-rw-r--r--src/url.c75
1 files changed, 75 insertions, 0 deletions
diff --git a/src/url.c b/src/url.c
new file mode 100644
index 0000000..0999399
--- /dev/null
+++ b/src/url.c
@@ -0,0 +1,75 @@
+/* url.c - Alpine Package Keeper (APK)
+ *
+ * Copyright (C) 2005-2008 Natanael Copa <n@tanael.org>
+ * Copyright (C) 2008 Timo Teräs <timo.teras@iki.fi>
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation. See http://www.gnu.org/ for details.
+ */
+
+#include <stdio.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "apk_io.h"
+
+static const char *url_is_file(const char *url)
+{
+ if (strncmp(url, "file:", 5) == 0)
+ return &url[5];
+
+ if (strncmp(url, "http:", 5) != 0 &&
+ strncmp(url, "https:", 6) != 0 &&
+ strncmp(url, "ftp:", 4) != 0)
+ return url;
+
+ return NULL;
+}
+
+static int fork_wget(const char *url)
+{
+ pid_t pid;
+ int fds[2];
+
+ if (pipe(fds) < 0)
+ return -1;
+
+ pid = fork();
+ if (pid == -1) {
+ close(fds[0]);
+ close(fds[1]);
+ return -1;
+ }
+
+ if (pid == 0) {
+ setsid();
+ close(fds[0]);
+ dup2(open("/dev/null", O_WRONLY), STDERR_FILENO);
+ dup2(open("/dev/null", O_RDONLY), STDIN_FILENO);
+ dup2(fds[1], STDOUT_FILENO);
+ execlp("wget", "wget", "-O", "-", url, NULL);
+ exit(0);
+ }
+
+ close(fds[1]);
+ return fds[0];
+}
+
+struct apk_istream *apk_istream_from_url(const char *url)
+{
+ if (url_is_file(url) != NULL)
+ return apk_istream_from_file(url_is_file(url));
+
+ return apk_istream_from_fd(fork_wget(url));
+}
+
+struct apk_bstream *apk_bstream_from_url(const char *url)
+{
+ if (url_is_file(url))
+ return apk_bstream_from_file(url);
+
+ return apk_bstream_from_fd(fork_wget(url));
+}