-
Notifications
You must be signed in to change notification settings - Fork 66
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Merge pull request #12 from upa/nuse-config-file
add nuse-config.c and nuse.conf instead of env variables for the issue #6
- Loading branch information
Showing
7 changed files
with
459 additions
and
172 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,250 @@ | ||
|
|
||
| #include <stdio.h> | ||
| #include <linux/socket.h> | ||
| #include <uapi/linux/in.h> | ||
| #include "nuse-config.h" | ||
|
|
||
| typedef unsigned int uint32_t; | ||
|
|
||
| /* sdlib.h */ | ||
| extern void *malloc (size_t size); | ||
| extern void free (void * ptr); | ||
|
|
||
|
|
||
| /* ipaddress config */ | ||
| typedef uint32_t in_addr_t; | ||
| extern in_addr_t inet_addr (const char * cp); | ||
|
|
||
|
|
||
|
|
||
| static int | ||
| strsplit (char * str, char ** args, int max) | ||
| { | ||
| int argc; | ||
| char * c; | ||
|
|
||
| for (argc = 0, c = str; *c == ' ' || *c == '\t' || *c == '\n'; c++); | ||
| while (*c && argc < max) { | ||
| args[argc++] = c; | ||
| while (*c && *c > ' ') c++; | ||
| while (*c && *c <= ' ') *c++ = '\0'; | ||
| } | ||
|
|
||
| return argc; | ||
| } | ||
|
|
||
| static int | ||
| nuse_config_parse_interface (char * line, FILE * fp, struct nuse_config * cf) | ||
| { | ||
| int ret; | ||
| char buf[1024], *p, * args[2]; | ||
| struct nuse_vif_config * vifcf; | ||
| struct sockaddr_in * sin; | ||
|
|
||
| memset (buf, 0, sizeof (buf)); | ||
|
|
||
| vifcf = (struct nuse_vif_config *) | ||
| malloc (sizeof (struct nuse_vif_config)); | ||
|
|
||
| memset (vifcf, 0, sizeof (struct nuse_vif_config)); | ||
| vifcf->type = NUSE_VIF_RAWSOCK; // default | ||
|
|
||
| strsplit (line, args, sizeof (args)); | ||
|
|
||
| strncpy (vifcf->ifname, args[1], IFNAMSIZ); | ||
|
|
||
| while ((p = fgets (buf, sizeof (buf), fp)) != NULL) { | ||
|
|
||
| ret = strsplit (buf, args, sizeof (args)); | ||
|
|
||
| if (ret == 0) { | ||
| /* no item in the line */ | ||
| break; | ||
| } | ||
|
|
||
| if (strncmp (args[0], "address", 7) == 0) { | ||
| strncpy (vifcf->address, args[1], NUSE_ADDR_STRLEN); | ||
| } | ||
| if (strncmp (args[0], "netmask", 7) == 0) { | ||
| strncpy (vifcf->netmask, args[1], NUSE_ADDR_STRLEN); | ||
| } | ||
| if (strncmp (args[0], "macaddr", 7) == 0) { | ||
| strncpy (vifcf->macaddr, args[1], NUSE_MACADDR_STRLEN); | ||
| } | ||
| if (strncmp (args[0], "viftype", 7) == 0) { | ||
| if (strncmp (args[1], "RAW", 3) == 0) { | ||
| vifcf->type = NUSE_VIF_RAWSOCK; | ||
| } else if (strncmp (args[1], "NETMAP", 6) == 0) { | ||
| vifcf->type = NUSE_VIF_NETMAP; | ||
| } else if (strncmp (args[1], "TAP", 3) == 0) { | ||
| vifcf->type = NUSE_VIF_TAP; | ||
| } else { | ||
| printf ("invalid vif type %s\n", args[1]); | ||
| return 0; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| if (!p) { | ||
| printf ("Config error for interface %s\n", vifcf->ifname); | ||
| free (vifcf); | ||
| return 0; | ||
| } | ||
|
|
||
| /* setup ifreq */ | ||
| sin = (struct sockaddr_in *)&vifcf->ifr_vif_addr.ifr_addr; | ||
| sin->sin_family = AF_INET; | ||
| sin->sin_addr.s_addr = inet_addr (vifcf->address); | ||
|
|
||
| sin = (struct sockaddr_in *)&vifcf->ifr_vif_mask.ifr_netmask; | ||
| sin->sin_family = AF_INET; | ||
| sin->sin_addr.s_addr = inet_addr (vifcf->netmask); | ||
|
|
||
| /* XXX: ifname attached to nuse process is same as host stck */ | ||
| strncpy (vifcf->ifr_vif_addr.ifr_name, vifcf->ifname, IFNAMSIZ); | ||
| strncpy (vifcf->ifr_vif_mask.ifr_name, vifcf->ifname, IFNAMSIZ); | ||
|
|
||
| /* reassemble mac address */ | ||
| if (sscanf (vifcf->macaddr, "%u:%u:%u:%u:%u:%u", | ||
| (unsigned int *)&vifcf->mac[0], | ||
| (unsigned int *)&vifcf->mac[1], | ||
| (unsigned int *)&vifcf->mac[2], | ||
| (unsigned int *)&vifcf->mac[3], | ||
| (unsigned int *)&vifcf->mac[4], | ||
| (unsigned int *)&vifcf->mac[5]) < 1) { | ||
| printf ("failed to parse mac address %s\n", vifcf->macaddr); | ||
| free (vifcf); | ||
| return 0; | ||
| } | ||
|
|
||
| cf->vifs[cf->vif_cnt++] = vifcf; | ||
|
|
||
| return 1; | ||
| } | ||
|
|
||
| static int | ||
| nuse_config_parse_route (char * line, FILE * fp, struct nuse_config * cf) | ||
| { | ||
| int ret, net, mask, gate; | ||
| char buf[1024], * p, * args[2]; | ||
| struct nuse_route_config * rtcf; | ||
| struct sockaddr_in * sin; | ||
|
|
||
| net = 0; | ||
| mask = 0; | ||
| gate = 0; | ||
|
|
||
| memset (buf, 0, sizeof (buf)); | ||
|
|
||
| rtcf = (struct nuse_route_config *) | ||
| malloc (sizeof (struct nuse_route_config)); | ||
|
|
||
| while ((p = fgets (buf, sizeof (buf), fp)) != NULL) { | ||
|
|
||
| ret = strsplit (buf, args, sizeof (args)); | ||
|
|
||
| if (ret == 0) { | ||
| /* no item in the line */ | ||
| break; | ||
| } | ||
|
|
||
| if (strncmp (args[0], "network", 7) == 0) { | ||
| strncpy (rtcf->network, args[1], NUSE_ADDR_STRLEN); | ||
| net = 1; | ||
| } | ||
| if (strncmp (args[0], "netmask", 7) == 0) { | ||
| strncpy (rtcf->netmask, args[1], NUSE_ADDR_STRLEN); | ||
| mask = 1; | ||
| } | ||
| if (strncmp (args[0], "gateway", 7) == 0) { | ||
| strncpy (rtcf->gateway, args[1], NUSE_ADDR_STRLEN); | ||
| gate = 1; | ||
| } | ||
|
|
||
| if (net && mask && gate) | ||
| break; | ||
| } | ||
|
|
||
| if (!p) { | ||
| printf ("Config error for route entry\n"); | ||
| free (rtcf); | ||
| return 0; | ||
| } | ||
|
|
||
| if (!net) | ||
| printf ("network is not configured !\n"); | ||
| if (!mask) | ||
| printf ("netmask is not configured !\n"); | ||
| if (!gate) | ||
| printf ("netmask is not configured !\n"); | ||
|
|
||
| if (!net || !mask || !gate) | ||
| return 0; | ||
|
|
||
| /* setup rtentry */ | ||
| sin = (struct sockaddr_in *)&rtcf->route.rt_dst; | ||
| sin->sin_family = AF_INET; | ||
| sin->sin_addr.s_addr = inet_addr (rtcf->network); | ||
|
|
||
| sin = (struct sockaddr_in *) &rtcf->route.rt_genmask; | ||
| sin->sin_family = AF_INET; | ||
| sin->sin_addr.s_addr = inet_addr (rtcf->netmask); | ||
|
|
||
| sin = (struct sockaddr_in *) &rtcf->route.rt_gateway; | ||
| sin->sin_family = AF_INET; | ||
| sin->sin_addr.s_addr = inet_addr (rtcf->gateway); | ||
|
|
||
| rtcf->route.rt_flags = RTF_UP | RTF_GATEWAY; | ||
| rtcf->route.rt_metric = 0; | ||
|
|
||
| cf->routes[cf->route_cnt++] = rtcf; | ||
|
|
||
| return 1; | ||
| } | ||
|
|
||
|
|
||
| int | ||
| nuse_config_parse (struct nuse_config * cf, char * cfname) | ||
| { | ||
| FILE * fp; | ||
| int ret; | ||
| char buf[1024]; | ||
|
|
||
| memset (cf, 0, sizeof (struct nuse_config)); | ||
|
|
||
| if ((fp = fopen (cfname, "r")) == NULL) { | ||
| perror ("fopen"); | ||
| return 0; | ||
| } | ||
|
|
||
| while (fgets (buf, sizeof (buf), fp) != NULL) { | ||
| if (strncmp (buf, "interface ", 10) == 0) { | ||
| ret = nuse_config_parse_interface (buf, fp, cf); | ||
| } else if (strncmp (buf, "route", 5) == 0) { | ||
| ret = nuse_config_parse_route (buf, fp, cf); | ||
| } | ||
| if (!ret) | ||
| break; | ||
| } | ||
|
|
||
| fclose (fp); | ||
|
|
||
| return ret; | ||
| } | ||
|
|
||
| void | ||
| nuse_config_free (struct nuse_config * cf) | ||
| { | ||
| int n; | ||
|
|
||
| for (n = 0; n < cf->vif_cnt; n++) { | ||
| free (cf->vifs[n]); | ||
| } | ||
|
|
||
| for (n = 0; n < cf->route_cnt; n++) { | ||
| free (cf->routes[n]); | ||
| } | ||
|
|
||
| return; | ||
| } | ||
|
|
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
|
|
||
| #ifndef _NUSE_CONFIG_H_ | ||
| #define _NUSE_CONFIG_H_ | ||
|
|
||
| #include <uapi/linux/if_ether.h> | ||
| #include <uapi/linux/route.h> | ||
| #include "nuse-vif.h" | ||
|
|
||
|
|
||
| #define NUSE_VIF_MAX 16 | ||
| #define NUSE_ROUTE_MAX 16 | ||
| #define NUSE_ADDR_STRLEN 16 | ||
| #define NUSE_MACADDR_STRLEN 20 | ||
|
|
||
|
|
||
| struct nuse_vif_config { | ||
| char ifname[IFNAMSIZ]; | ||
| char address[NUSE_ADDR_STRLEN]; | ||
| char netmask[NUSE_ADDR_STRLEN]; | ||
| char macaddr[NUSE_MACADDR_STRLEN]; | ||
|
|
||
| enum viftype type; | ||
|
|
||
| u_char mac[ETH_ALEN]; | ||
|
|
||
| struct ifreq ifr_vif_addr; | ||
| struct ifreq ifr_vif_mask; | ||
| }; | ||
|
|
||
| struct nuse_route_config { | ||
| char network[NUSE_ADDR_STRLEN]; | ||
| char netmask[NUSE_ADDR_STRLEN]; | ||
| char gateway[NUSE_ADDR_STRLEN]; | ||
|
|
||
| struct rtentry route; | ||
| }; | ||
|
|
||
| struct nuse_config { | ||
| int vif_cnt, route_cnt; | ||
| struct nuse_vif_config * vifs[NUSE_VIF_MAX]; | ||
| struct nuse_route_config * routes[NUSE_ROUTE_MAX]; | ||
| }; | ||
|
|
||
|
|
||
| /* open cfname and return struct nuse_config */ | ||
| int nuse_config_parse (struct nuse_config * cf, char * cfname); | ||
|
|
||
| /* free cf->nuse_vif_config and cf->nuse_route_config */ | ||
| void nuse_config_free (struct nuse_config * cf); | ||
|
|
||
|
|
||
|
|
||
| #endif /* _NUSE_CONFIG_H_ */ |
Oops, something went wrong.