diff options
Diffstat (limited to 'net/slirp.c')
| -rw-r--r-- | net/slirp.c | 114 |
1 files changed, 87 insertions, 27 deletions
diff --git a/net/slirp.c b/net/slirp.c index 0a1c2a5eac..c627a9dd24 100644 --- a/net/slirp.c +++ b/net/slirp.c @@ -732,6 +732,7 @@ static SlirpState *slirp_lookup(Monitor *mon, const char *id) void hmp_hostfwd_remove(Monitor *mon, const QDict *qdict) { + /* TODO: support removing unix fwd */ struct sockaddr_in host_addr = { .sin_family = AF_INET, .sin_addr = { @@ -800,12 +801,13 @@ void hmp_hostfwd_remove(Monitor *mon, const QDict *qdict) static int slirp_hostfwd(SlirpState *s, const char *redir_str, Error **errp) { - struct sockaddr_in host_addr = { - .sin_family = AF_INET, - .sin_addr = { - .s_addr = INADDR_ANY, - }, - }; + union { + struct sockaddr_in in; +#if !defined(WIN32) && SLIRP_CHECK_VERSION(4, 7, 0) + struct sockaddr_un un; +#endif + } host_addr = {0}; + struct sockaddr_in guest_addr = { .sin_family = AF_INET, .sin_addr = { @@ -816,9 +818,13 @@ static int slirp_hostfwd(SlirpState *s, const char *redir_str, Error **errp) int host_port, guest_port; const char *p; char buf[256]; - int is_udp; + int is_udp = 0; +#if !defined(WIN32) && SLIRP_CHECK_VERSION(4, 7, 0) + int is_unix = 0; +#endif const char *end; const char *fail_reason = "Unknown reason"; + socklen_t host_addr_size; p = redir_str; if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) { @@ -829,30 +835,83 @@ static int slirp_hostfwd(SlirpState *s, const char *redir_str, Error **errp) is_udp = 0; } else if (!strcmp(buf, "udp")) { is_udp = 1; - } else { - fail_reason = "Bad protocol name"; - goto fail_syntax; } - - if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { - fail_reason = "Missing : separator"; - goto fail_syntax; +#if !defined(WIN32) && SLIRP_CHECK_VERSION(4, 7, 0) + else if (!strcmp(buf, "unix")) { + is_unix = 1; } - if (buf[0] != '\0' && !inet_aton(buf, &host_addr.sin_addr)) { - fail_reason = "Bad host address"; +#endif + else { + fail_reason = "Bad protocol name"; goto fail_syntax; } - if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) { - fail_reason = "Bad host port separator"; - goto fail_syntax; - } - err = qemu_strtoi(buf, &end, 0, &host_port); - if (err || host_port < 0 || host_port > 65535) { - fail_reason = "Bad host port"; - goto fail_syntax; +#if !defined(WIN32) && SLIRP_CHECK_VERSION(4, 7, 0) + if (is_unix) { + if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) { + fail_reason = "Missing - separator"; + goto fail_syntax; + } + if (buf[0] == '\0') { + fail_reason = "Missing unix socket path"; + goto fail_syntax; + } + if (buf[0] != '/') { + fail_reason = "unix socket path must be absolute"; + goto fail_syntax; + } + + size_t path_len = strlen(buf); + if (path_len > sizeof(host_addr.un.sun_path) - 1) { + fail_reason = "Unix socket path is too long"; + goto fail_syntax; + } + + struct stat st; + if (stat(buf, &st) == 0) { + if (!S_ISSOCK(st.st_mode)) { + fail_reason = "file exists and it's not unix socket"; + goto fail_syntax; + } + + if (unlink(buf) < 0) { + error_setg_errno(errp, errno, "Failed to unlink '%s'", buf); + goto fail_syntax; + } + } + host_addr.un.sun_family = AF_UNIX; + memcpy(host_addr.un.sun_path, buf, path_len); + host_addr_size = sizeof(host_addr.un); + } else +#endif + { + host_addr.in.sin_family = AF_INET; + host_addr.in.sin_addr.s_addr = INADDR_ANY; + + if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { + fail_reason = "Missing : separator"; + goto fail_syntax; + } + + if (buf[0] != '\0' && !inet_aton(buf, &host_addr.in.sin_addr)) { + fail_reason = "Bad host address"; + goto fail_syntax; + } + + if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) { + fail_reason = "Bad host port separator"; + goto fail_syntax; + } + + err = qemu_strtoi(buf, &end, 0, &host_port); + if (err || host_port < 0 || host_port > 65535) { + fail_reason = "Bad host port"; + goto fail_syntax; + } + + host_addr.in.sin_port = htons(host_port); + host_addr_size = sizeof(host_addr.in); } - host_addr.sin_port = htons(host_port); if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { fail_reason = "Missing guest address"; @@ -872,12 +931,13 @@ static int slirp_hostfwd(SlirpState *s, const char *redir_str, Error **errp) #if SLIRP_CHECK_VERSION(4, 5, 0) err = slirp_add_hostxfwd(s->slirp, - (struct sockaddr *) &host_addr, sizeof(host_addr), + (struct sockaddr *) &host_addr, host_addr_size, (struct sockaddr *) &guest_addr, sizeof(guest_addr), is_udp ? SLIRP_HOSTFWD_UDP : 0); #else + (void) host_addr_size; err = slirp_add_hostfwd(s->slirp, is_udp, - host_addr.sin_addr, host_port, + host_addr.in.sin_addr, host_port, guest_addr.sin_addr, guest_port); #endif |