72745632a
Daniel Borca
2013-11-28
Subject
ping: try SOCK_DGRAM if no root privileges
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networking/ping.c+16 -3
| @@ -168,9 +168,22 @@ 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); |
| } | |
| xmove_fd(sock, pingsock); | |