slirp: move sources to src/ subdirectory

Prepare for making slirp/ a standalone project.

Remove some useless includes while at it.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20190212162524.31504-5-marcandre.lureau@redhat.com>
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>

1 files changed, 0 insertions, 206 deletions

diff --git a/slirp/dhcpv6.c b/slirp/dhcpv6.c
deleted file mode 100644
index e655c7d..0000000
--- a/slirp/dhcpv6.c
+++ /dev/null
@@ -1,206 +0,0 @@
-/*
- * SLIRP stateless DHCPv6
- *
- * We only support stateless DHCPv6, e.g. for network booting.
- * See RFC 3315, RFC 3736, RFC 3646 and RFC 5970 for details.
- *
- * Copyright 2016 Thomas Huth, Red Hat Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License,
- * or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "slirp.h"
-#include "dhcpv6.h"
-
-/* DHCPv6 message types */
-#define MSGTYPE_REPLY        7
-#define MSGTYPE_INFO_REQUEST 11
-
-/* DHCPv6 option types */
-#define OPTION_CLIENTID      1
-#define OPTION_IAADDR        5
-#define OPTION_ORO           6
-#define OPTION_DNS_SERVERS   23
-#define OPTION_BOOTFILE_URL  59
-
-struct requested_infos {
-    uint8_t *client_id;
-    int client_id_len;
-    bool want_dns;
-    bool want_boot_url;
-};
-
-/**
- * Analyze the info request message sent by the client to see what data it
- * provided and what it wants to have. The information is gathered in the
- * "requested_infos" struct. Note that client_id (if provided) points into
- * the odata region, thus the caller must keep odata valid as long as it
- * needs to access the requested_infos struct.
- */
-static int dhcpv6_parse_info_request(Slirp *slirp, uint8_t *odata, int olen,
-                                     struct requested_infos *ri)
-{
-    int i, req_opt;
-
-    while (olen > 4) {
-        /* Parse one option */
-        int option = odata[0] << 8 | odata[1];
-        int len = odata[2] << 8 | odata[3];
-
-        if (len + 4 > olen) {
-            slirp->cb->guest_error("Guest sent bad DHCPv6 packet!", slirp->opaque);
-            return -E2BIG;
-        }
-
-        switch (option) {
-        case OPTION_IAADDR:
-            /* According to RFC3315, we must discard requests with IA option */
-            return -EINVAL;
-        case OPTION_CLIENTID:
-            if (len > 256) {
-                /* Avoid very long IDs which could cause problems later */
-                return -E2BIG;
-            }
-            ri->client_id = odata + 4;
-            ri->client_id_len = len;
-            break;
-        case OPTION_ORO:        /* Option request option */
-            if (len & 1) {
-                return -EINVAL;
-            }
-            /* Check which options the client wants to have */
-            for (i = 0; i < len; i += 2) {
-                req_opt = odata[4 + i] << 8 | odata[4 + i + 1];
-                switch (req_opt) {
-                case OPTION_DNS_SERVERS:
-                    ri->want_dns = true;
-                    break;
-                case OPTION_BOOTFILE_URL:
-                    ri->want_boot_url = true;
-                    break;
-                default:
-                    DEBUG_MISC("dhcpv6: Unsupported option request %d",
-                               req_opt);
-                }
-            }
-            break;
-        default:
-            DEBUG_MISC("dhcpv6 info req: Unsupported option %d, len=%d",
-                       option, len);
-        }
-
-        odata += len + 4;
-        olen -= len + 4;
-    }
-
-    return 0;
-}
-
-
-/**
- * Handle information request messages
- */
-static void dhcpv6_info_request(Slirp *slirp, struct sockaddr_in6 *srcsas,
-                                uint32_t xid, uint8_t *odata, int olen)
-{
-    struct requested_infos ri = { NULL };
-    struct sockaddr_in6 sa6, da6;
-    struct mbuf *m;
-    uint8_t *resp;
-
-    if (dhcpv6_parse_info_request(slirp, odata, olen, &ri) < 0) {
-        return;
-    }
-
-    m = m_get(slirp);
-    if (!m) {
-        return;
-    }
-    memset(m->m_data, 0, m->m_size);
-    m->m_data += IF_MAXLINKHDR;
-    resp = (uint8_t *)m->m_data + sizeof(struct ip6) + sizeof(struct udphdr);
-
-    /* Fill in response */
-    *resp++ = MSGTYPE_REPLY;
-    *resp++ = (uint8_t)(xid >> 16);
-    *resp++ = (uint8_t)(xid >> 8);
-    *resp++ = (uint8_t)xid;
-
-    if (ri.client_id) {
-        *resp++ = OPTION_CLIENTID >> 8;         /* option-code high byte */
-        *resp++ = OPTION_CLIENTID;              /* option-code low byte */
-        *resp++ = ri.client_id_len >> 8;        /* option-len high byte */
-        *resp++ = ri.client_id_len;             /* option-len low byte */
-        memcpy(resp, ri.client_id, ri.client_id_len);
-        resp += ri.client_id_len;
-    }
-    if (ri.want_dns) {
-        *resp++ = OPTION_DNS_SERVERS >> 8;      /* option-code high byte */
-        *resp++ = OPTION_DNS_SERVERS;           /* option-code low byte */
-        *resp++ = 0;                            /* option-len high byte */
-        *resp++ = 16;                           /* option-len low byte */
-        memcpy(resp, &slirp->vnameserver_addr6, 16);
-        resp += 16;
-    }
-    if (ri.want_boot_url) {
-        uint8_t *sa = slirp->vhost_addr6.s6_addr;
-        int slen, smaxlen;
-
-        *resp++ = OPTION_BOOTFILE_URL >> 8;     /* option-code high byte */
-        *resp++ = OPTION_BOOTFILE_URL;          /* option-code low byte */
-        smaxlen = (uint8_t *)m->m_data + IF_MTU - (resp + 2);
-        slen = snprintf((char *)resp + 2, smaxlen,
-                        "tftp://[%02x%02x:%02x%02x:%02x%02x:%02x%02x:"
-                                "%02x%02x:%02x%02x:%02x%02x:%02x%02x]/%s",
-                        sa[0], sa[1], sa[2], sa[3], sa[4], sa[5], sa[6], sa[7],
-                        sa[8], sa[9], sa[10], sa[11], sa[12], sa[13], sa[14],
-                        sa[15], slirp->bootp_filename);
-        slen = MIN(slen, smaxlen);
-        *resp++ = slen >> 8;                    /* option-len high byte */
-        *resp++ = slen;                         /* option-len low byte */
-        resp += slen;
-    }
-
-    sa6.sin6_addr = slirp->vhost_addr6;
-    sa6.sin6_port = DHCPV6_SERVER_PORT;
-    da6.sin6_addr = srcsas->sin6_addr;
-    da6.sin6_port = srcsas->sin6_port;
-    m->m_data += sizeof(struct ip6) + sizeof(struct udphdr);
-    m->m_len = resp - (uint8_t *)m->m_data;
-    udp6_output(NULL, m, &sa6, &da6);
-}
-
-/**
- * Handle DHCPv6 messages sent by the client
- */
-void dhcpv6_input(struct sockaddr_in6 *srcsas, struct mbuf *m)
-{
-    uint8_t *data = (uint8_t *)m->m_data + sizeof(struct udphdr);
-    int data_len = m->m_len - sizeof(struct udphdr);
-    uint32_t xid;
-
-    if (data_len < 4) {
-        return;
-    }
-
-    xid = ntohl(*(uint32_t *)data) & 0xffffff;
-
-    switch (data[0]) {
-    case MSGTYPE_INFO_REQUEST:
-        dhcpv6_info_request(m->slirp, srcsas, xid, &data[4], data_len - 4);
-        break;
-    default:
-        DEBUG_MISC("dhcpv6_input: Unsupported message type 0x%x", data[0]);
-    }
-}