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-rw-r--r--system/busybox/0004-ping-make-ping-work-without-root-privileges.patch197
1 files changed, 0 insertions, 197 deletions
diff --git a/system/busybox/0004-ping-make-ping-work-without-root-privileges.patch b/system/busybox/0004-ping-make-ping-work-without-root-privileges.patch
deleted file mode 100644
index 77fa5ed76..000000000
--- a/system/busybox/0004-ping-make-ping-work-without-root-privileges.patch
+++ /dev/null
@@ -1,197 +0,0 @@
-From bef770d1ee4179e380dff24305d9b6d899147add Mon Sep 17 00:00:00 2001
-From: Natanael Copa <ncopa@alpinelinux.org>
-Date: Tue, 29 Mar 2016 18:59:22 +0200
-Subject: [PATCH 04/11] ping: make ping work without root privileges
-
----
- networking/ping.c | 103 +++++++++++++++++++++++++++++++++++++++++++++---------
- 1 file changed, 87 insertions(+), 16 deletions(-)
-
-diff --git a/networking/ping.c b/networking/ping.c
-index 94fb007f5..26e40e1fc 100644
---- a/networking/ping.c
-+++ b/networking/ping.c
-@@ -155,6 +155,7 @@ enum {
- pingsock = 0,
- };
-
-+static int using_dgram;
- static void
- #if ENABLE_PING6
- create_icmp_socket(len_and_sockaddr *lsa)
-@@ -171,9 +172,23 @@ create_icmp_socket(void)
- #endif
- sock = socket(AF_INET, SOCK_RAW, 1); /* 1 == ICMP */
- if (sock < 0) {
-- if (errno == EPERM)
-- bb_error_msg_and_die(bb_msg_perm_denied_are_you_root);
-- bb_perror_msg_and_die(bb_msg_can_not_create_raw_socket);
-+ if (errno != EPERM)
-+ bb_perror_msg_and_die(bb_msg_can_not_create_raw_socket);
-+#if defined(__linux__) || defined(__APPLE__)
-+ /* We don't have root privileges. Try SOCK_DGRAM instead.
-+ * Linux needs net.ipv4.ping_group_range for this to work.
-+ * MacOSX allows ICMP_ECHO, ICMP_TSTAMP or ICMP_MASKREQ
-+ */
-+#if ENABLE_PING6
-+ if (lsa->u.sa.sa_family == AF_INET6)
-+ sock = socket(AF_INET6, SOCK_DGRAM, IPPROTO_ICMPV6);
-+ else
-+#endif
-+ sock = socket(AF_INET, SOCK_DGRAM, 1); /* 1 == ICMP */
-+ if (sock < 0)
-+#endif
-+ bb_error_msg_and_die(bb_msg_perm_denied_are_you_root);
-+ using_dgram = 1;
- }
-
- xmove_fd(sock, pingsock);
-@@ -226,10 +241,12 @@ static void ping4(len_and_sockaddr *lsa)
- bb_perror_msg("recvfrom");
- continue;
- }
-- if (c >= 76) { /* ip + icmp */
-- struct iphdr *iphdr = (struct iphdr *) G.packet;
-+ if (c >= 76 || using_dgram && (c == 64)) { /* ip + icmp */
-+ if(!using_dgram) {
-+ struct iphdr *iphdr = (struct iphdr *) G.packet;
-
-- pkt = (struct icmp *) (G.packet + (iphdr->ihl << 2)); /* skip ip hdr */
-+ pkt = (struct icmp *) (G.packet + (iphdr->ihl << 2)); /* skip ip hdr */
-+ } else pkt = (struct icmp *) G.packet;
- if (pkt->icmp_id != G.myid)
- continue; /* not our ping */
- if (pkt->icmp_type == ICMP_ECHOREPLY)
-@@ -627,19 +644,21 @@ static void unpack_tail(int sz, uint32_t *tp,
- }
- static void unpack4(char *buf, int sz, struct sockaddr_in *from)
- {
-- struct icmp *icmppkt;
- struct iphdr *iphdr;
-+ struct icmp *icmppkt;
- int hlen;
-
- /* discard if too short */
- if (sz < (datalen + ICMP_MINLEN))
- return;
-+ if(!using_dgram) {
-+ /* check IP header */
-+ iphdr = (struct iphdr *) buf;
-+ hlen = iphdr->ihl << 2;
-+ sz -= hlen;
-+ icmppkt = (struct icmp *) (buf + hlen);
-+ } else icmppkt = (struct icmp *) buf;
-
-- /* check IP header */
-- iphdr = (struct iphdr *) buf;
-- hlen = iphdr->ihl << 2;
-- sz -= hlen;
-- icmppkt = (struct icmp *) (buf + hlen);
- if (icmppkt->icmp_id != myid)
- return; /* not our ping */
-
-@@ -651,7 +670,7 @@ static void unpack4(char *buf, int sz, struct sockaddr_in *from)
- tp = (uint32_t *) icmppkt->icmp_data;
- unpack_tail(sz, tp,
- inet_ntoa(*(struct in_addr *) &from->sin_addr.s_addr),
-- recv_seq, iphdr->ttl);
-+ recv_seq, using_dgram ? 42 : iphdr->ttl);
- } else if (icmppkt->icmp_type != ICMP_ECHO) {
- bb_error_msg("warning: got ICMP %d (%s)",
- icmppkt->icmp_type,
-@@ -695,11 +714,31 @@ static void ping4(len_and_sockaddr *lsa)
- int sockopt;
-
- pingaddr.sin = lsa->u.sin;
-- if (source_lsa) {
-+ if (source_lsa && !using_dgram) {
- if (setsockopt(pingsock, IPPROTO_IP, IP_MULTICAST_IF,
- &source_lsa->u.sa, source_lsa->len))
- bb_error_msg_and_die("can't set multicast source interface");
- xbind(pingsock, &source_lsa->u.sa, source_lsa->len);
-+ } else if(using_dgram) {
-+ struct sockaddr_in sa;
-+ socklen_t sl;
-+
-+ sa.sin_family = AF_INET;
-+ sa.sin_port = 0;
-+ sa.sin_addr.s_addr = source_lsa ?
-+ source_lsa->u.sin.sin_addr.s_addr : 0;
-+ sl = sizeof(sa);
-+
-+ if (bind(pingsock, (struct sockaddr *) &sa, sl) == -1) {
-+ perror("bind");
-+ exit(2);
-+ }
-+
-+ if (getsockname(pingsock, (struct sockaddr *) &sa, &sl) == -1) {
-+ perror("getsockname");
-+ exit(2);
-+ }
-+ myid = sa.sin_port;
- }
-
- /* enable broadcast pings */
-@@ -716,6 +755,15 @@ static void ping4(len_and_sockaddr *lsa)
- setsockopt_int(pingsock, IPPROTO_IP, IP_MULTICAST_TTL, opt_ttl);
- }
-
-+ if(using_dgram) {
-+ int hold = 65536;
-+ if (setsockopt(pingsock, SOL_IP, IP_RECVTTL, (char *)&hold, sizeof(hold)))
-+ perror("WARNING: setsockopt(IP_RECVTTL)");
-+ if (setsockopt(pingsock, SOL_IP, IP_RETOPTS, (char *)&hold, sizeof(hold)))
-+ perror("WARNING: setsockopt(IP_RETOPTS)");
-+
-+ }
-+
- signal(SIGINT, print_stats_and_exit);
-
- /* start the ping's going ... */
-@@ -749,10 +797,33 @@ static void ping6(len_and_sockaddr *lsa)
- char control_buf[CMSG_SPACE(36)];
-
- pingaddr.sin6 = lsa->u.sin6;
-- if (source_lsa)
-+ if (source_lsa && !using_dgram)
- xbind(pingsock, &source_lsa->u.sa, source_lsa->len);
-+ else if(using_dgram) {
-+ struct sockaddr_in6 sa = {0};
-+ socklen_t sl;
-+
-+ sa.sin6_family = AF_INET6;
-+ sa.sin6_port = 0;
-+ if(source_lsa) {
-+ memcpy(&sa.sin6_addr, &source_lsa->u.sin6.sin6_addr, sizeof(struct in6_addr));
-+ }
-+ sl = sizeof(sa);
-+
-+ if (bind(pingsock, (struct sockaddr *) &sa, sl) == -1) {
-+ perror("bind");
-+ exit(2);
-+ }
-+
-+ if (getsockname(pingsock, (struct sockaddr *) &sa, &sl) == -1) {
-+ perror("getsockname");
-+ exit(2);
-+ }
-+ myid = sa.sin6_port;
-+ }
-
- #ifdef ICMP6_FILTER
-+ if(!using_dgram)
- {
- struct icmp6_filter filt;
- if (!(option_mask32 & OPT_VERBOSE)) {
-@@ -880,7 +951,7 @@ static int common_ping_main(int opt, char **argv)
- if (opt & OPT_p)
- G.pattern = xstrtou_range(str_p, 16, 0, 255);
-
-- myid = (uint16_t) getpid();
-+ if (!using_dgram) myid = (uint16_t) getpid();
- hostname = argv[optind];
- #if ENABLE_PING6
- {
---
-2.13.2
-
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