76 lines
1.5 KiB
C
76 lines
1.5 KiB
C
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/* url.c - Alpine Package Keeper (APK)
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*
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* Copyright (C) 2005-2008 Natanael Copa <n@tanael.org>
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* Copyright (C) 2008 Timo Teräs <timo.teras@iki.fi>
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation. See http://www.gnu.org/ for details.
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*/
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#include <stdio.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "apk_io.h"
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static const char *url_is_file(const char *url)
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{
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if (strncmp(url, "file:", 5) == 0)
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return &url[5];
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if (strncmp(url, "http:", 5) != 0 &&
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strncmp(url, "https:", 6) != 0 &&
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strncmp(url, "ftp:", 4) != 0)
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return url;
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return NULL;
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}
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static int fork_wget(const char *url)
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{
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pid_t pid;
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int fds[2];
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if (pipe(fds) < 0)
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return -1;
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pid = fork();
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if (pid == -1) {
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close(fds[0]);
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close(fds[1]);
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return -1;
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}
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if (pid == 0) {
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setsid();
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close(fds[0]);
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dup2(open("/dev/null", O_WRONLY), STDERR_FILENO);
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dup2(open("/dev/null", O_RDONLY), STDIN_FILENO);
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dup2(fds[1], STDOUT_FILENO);
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execlp("wget", "wget", "-O", "-", url, NULL);
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exit(0);
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}
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close(fds[1]);
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return fds[0];
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}
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struct apk_istream *apk_istream_from_url(const char *url)
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{
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if (url_is_file(url) != NULL)
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return apk_istream_from_file(url_is_file(url));
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return apk_istream_from_fd(fork_wget(url));
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}
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struct apk_bstream *apk_bstream_from_url(const char *url)
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{
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if (url_is_file(url))
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return apk_bstream_from_file(url);
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return apk_bstream_from_fd(fork_wget(url));
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}
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