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net: Add parameter checks for VLAN clients (Jan Kiszka)

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This aims at helping the user to find typos or other mistakes in
parameter lists passed for VLAN client initialization. The existing
parsing infrastructure does not allow a leaner approach, but this is
better than nothing IMHO.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7197 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aliguori 2009-04-21 19:56:15 +00:00
parent ea053add70
commit 8e4416af45
1 changed files with 83 additions and 0 deletions
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83
net.c
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@ -1622,6 +1622,9 @@ void qemu_check_nic_model_list(NICInfo *nd, const char * const *models,
int net_client_init(const char *device, const char *p)
{
static const char * const fd_params[] = {
"vlan", "name", "fd", NULL
};
char buf[1024];
int vlan_id, ret;
VLANState *vlan;
@ -1637,10 +1640,18 @@ int net_client_init(const char *device, const char *p)
name = strdup(buf);
}
if (!strcmp(device, "nic")) {
static const char * const nic_params[] = {
"vlan", "name", "macaddr", "model", NULL
};
NICInfo *nd;
uint8_t *macaddr;
int idx = nic_get_free_idx();
if (check_params(buf, sizeof(buf), nic_params, p) < 0) {
fprintf(stderr, "qemu: invalid parameter '%s' in '%s'\n",
buf, p);
return -1;
}
if (idx == -1 || nb_nics >= MAX_NICS) {
fprintf(stderr, "Too Many NICs\n");
ret = -1;
@ -1674,12 +1685,24 @@ int net_client_init(const char *device, const char *p)
ret = idx;
} else
if (!strcmp(device, "none")) {
if (*p != '\0') {
fprintf(stderr, "qemu: 'none' takes no parameters\n");
return -1;
}
/* does nothing. It is needed to signal that no network cards
are wanted */
ret = 0;
} else
#ifdef CONFIG_SLIRP
if (!strcmp(device, "user")) {
static const char * const slirp_params[] = {
"vlan", "name", "hostname", "restrict", "ip", NULL
};
if (check_params(buf, sizeof(buf), slirp_params, p) < 0) {
fprintf(stderr, "qemu: invalid parameter '%s' in '%s'\n",
buf, p);
return -1;
}
if (get_param_value(buf, sizeof(buf), "hostname", p)) {
pstrcpy(slirp_hostname, sizeof(slirp_hostname), buf);
}
@ -1721,7 +1744,16 @@ int net_client_init(const char *device, const char *p)
#endif
#ifdef _WIN32
if (!strcmp(device, "tap")) {
static const char * const tap_params[] = {
"vlan", "name", "ifname", NULL
};
char ifname[64];
if (check_params(buf, sizeof(buf), tap_params, p) < 0) {
fprintf(stderr, "qemu: invalid parameter '%s' in '%s'\n",
buf, p);
return -1;
}
if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
fprintf(stderr, "tap: no interface name\n");
ret = -1;
@ -1738,11 +1770,24 @@ int net_client_init(const char *device, const char *p)
int fd;
vlan->nb_host_devs++;
if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
if (check_params(buf, sizeof(buf), fd_params, p) < 0) {
fprintf(stderr, "qemu: invalid parameter '%s' in '%s'\n",
buf, p);
return -1;
}
fd = strtol(buf, NULL, 0);
fcntl(fd, F_SETFL, O_NONBLOCK);
net_tap_fd_init(vlan, device, name, fd);
ret = 0;
} else {
static const char * const tap_params[] = {
"vlan", "name", "ifname", "script", "downscript", NULL
};
if (check_params(buf, sizeof(buf), tap_params, p) < 0) {
fprintf(stderr, "qemu: invalid parameter '%s' in '%s'\n",
buf, p);
return -1;
}
if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
ifname[0] = '\0';
}
@ -1759,15 +1804,44 @@ int net_client_init(const char *device, const char *p)
if (!strcmp(device, "socket")) {
if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
int fd;
if (check_params(buf, sizeof(buf), fd_params, p) < 0) {
fprintf(stderr, "qemu: invalid parameter '%s' in '%s'\n",
buf, p);
return -1;
}
fd = strtol(buf, NULL, 0);
ret = -1;
if (net_socket_fd_init(vlan, device, name, fd, 1))
ret = 0;
} else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) {
static const char * const listen_params[] = {
"vlan", "name", "listen", NULL
};
if (check_params(buf, sizeof(buf), listen_params, p) < 0) {
fprintf(stderr, "qemu: invalid parameter '%s' in '%s'\n",
buf, p);
return -1;
}
ret = net_socket_listen_init(vlan, device, name, buf);
} else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) {
static const char * const connect_params[] = {
"vlan", "name", "connect", NULL
};
if (check_params(buf, sizeof(buf), connect_params, p) < 0) {
fprintf(stderr, "qemu: invalid parameter '%s' in '%s'\n",
buf, p);
return -1;
}
ret = net_socket_connect_init(vlan, device, name, buf);
} else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) {
static const char * const mcast_params[] = {
"vlan", "name", "mcast", NULL
};
if (check_params(buf, sizeof(buf), mcast_params, p) < 0) {
fprintf(stderr, "qemu: invalid parameter '%s' in '%s'\n",
buf, p);
return -1;
}
ret = net_socket_mcast_init(vlan, device, name, buf);
} else {
fprintf(stderr, "Unknown socket options: %s\n", p);
@ -1778,8 +1852,17 @@ int net_client_init(const char *device, const char *p)
} else
#ifdef CONFIG_VDE
if (!strcmp(device, "vde")) {
static const char * const vde_params[] = {
"vlan", "name", "sock", "port", "group", "mode", NULL
};
char vde_sock[1024], vde_group[512];
int vde_port, vde_mode;
if (check_params(buf, sizeof(buf), vde_params, p) < 0) {
fprintf(stderr, "qemu: invalid parameter '%s' in '%s'\n",
buf, p);
return -1;
}
vlan->nb_host_devs++;
if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) {
vde_sock[0] = '\0';