X-Git-Url: http://git.onelab.eu/?p=iproute2.git;a=blobdiff_plain;f=tc%2Fm_ematch.c;fp=tc%2Fm_ematch.c;h=0000000000000000000000000000000000000000;hp=44c621bc6fa866f6aaa29ae9d7e602312ce7bf67;hb=3331a68859fd71047bb1f309048960b48eab2d83;hpb=2bd4a72f2100be7ad7d9518cb1d49bb2a5b71994

diff --git a/tc/m_ematch.c b/tc/m_ematch.c
deleted file mode 100644
index 44c621b..0000000
--- a/tc/m_ematch.c
+++ /dev/null
@@ -1,493 +0,0 @@
-/*
- * m_ematch.c		Extended Matches
- *
- *		This program is free software; you can distribute 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.
- *
- * Authors:	Thomas Graf <tgraf@suug.ch>
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <syslog.h>
-#include <fcntl.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <string.h>
-#include <dlfcn.h>
-#include <stdarg.h>
-#include <errno.h>
-
-#include "utils.h"
-#include "tc_util.h"
-#include "m_ematch.h"
-
-#define EMATCH_MAP "/etc/iproute2/ematch_map"
-
-static struct ematch_util *ematch_list;
-
-/* export to bison parser */
-int ematch_argc;
-char **ematch_argv;
-char *ematch_err = NULL;
-struct ematch *ematch_root;
-
-static int begin_argc;
-static char **begin_argv;
-
-static inline void map_warning(int num, char *kind)
-{
-	fprintf(stderr,
-	    "Error: Unable to find ematch \"%s\" in %s\n" \
-	    "Please assign a unique ID to the ematch kind the suggested " \
-	    "entry is:\n" \
-	    "\t%d\t%s\n", 
-	    kind, EMATCH_MAP, num, kind);
-}
-
-static int lookup_map(__u16 num, char *dst, int len, const char *file)
-{
-	int err = -EINVAL;
-	char buf[512];
-	FILE *fd = fopen(file, "r");
-
-	if (fd == NULL)
-		return -errno;
-
-	while (fgets(buf, sizeof(buf), fd)) {
-		char namebuf[512], *p = buf;
-		int id;
-
-		while (*p == ' ' || *p == '\t')
-			p++;
-		if (*p == '#' || *p == '\n' || *p == 0)
-			continue;
-	
-		if (sscanf(p, "%d %s", &id, namebuf) != 2) {
-			fprintf(stderr, "ematch map %s corrupted at %s\n",
-			    file, p);
-			goto out;
-		}
-
-		if (id == num) {
-			if (dst)
-				strncpy(dst, namebuf, len - 1);
-			err = 0;
-			goto out;
-		}
-	}
-
-	err = -ENOENT;
-out:
-	fclose(fd);
-	return err;
-}
-
-static int lookup_map_id(char *kind, int *dst, const char *file)
-{
-	int err = -EINVAL;
-	char buf[512];
-	FILE *fd = fopen(file, "r");
-
-	if (fd == NULL)
-		return -errno;
-
-	while (fgets(buf, sizeof(buf), fd)) {
-		char namebuf[512], *p = buf;
-		int id;
-
-		while (*p == ' ' || *p == '\t')
-			p++;
-		if (*p == '#' || *p == '\n' || *p == 0)
-			continue;
-	
-		if (sscanf(p, "%d %s", &id, namebuf) != 2) {
-			fprintf(stderr, "ematch map %s corrupted at %s\n",
-			    file, p);
-			goto out;
-		}
-
-		if (!strcasecmp(namebuf, kind)) {
-			if (dst)
-				*dst = id;
-			err = 0;
-			goto out;
-		}
-	}
-
-	err = -ENOENT;
-	*dst = 0;
-out:
-	fclose(fd);
-	return err;
-}
-
-static struct ematch_util *get_ematch_kind(char *kind)
-{
-	static void *body;
-	void *dlh;
-	char buf[256];
-	struct ematch_util *e;
-
-	for (e = ematch_list; e; e = e->next) {
-		if (strcmp(e->kind, kind) == 0)
-			return e;
-	}
-
-	snprintf(buf, sizeof(buf), "em_%s.so", kind);
-	dlh = dlopen(buf, RTLD_LAZY);
-	if (dlh == NULL) {
-		dlh = body;
-		if (dlh == NULL) {
-			dlh = body = dlopen(NULL, RTLD_LAZY);
-			if (dlh == NULL)
-				return NULL;
-		}
-	}
-
-	snprintf(buf, sizeof(buf), "%s_ematch_util", kind);
-	e = dlsym(dlh, buf);
-	if (e == NULL)
-		return NULL;
-
-	e->next = ematch_list;
-	ematch_list = e;
-
-	return e;
-}
-
-static struct ematch_util *get_ematch_kind_num(__u16 kind)
-{
-	char name[32];
-
-	if (lookup_map(kind, name, sizeof(name), EMATCH_MAP) < 0)
-		return NULL;
-
-	return get_ematch_kind(name);
-
-	return NULL;
-}
-
-static int parse_tree(struct nlmsghdr *n, struct ematch *tree)
-{
-	int index = 1;
-	struct ematch *t;
-
-	for (t = tree; t; t = t->next) {
-		struct rtattr *tail = NLMSG_TAIL(n);
-		struct tcf_ematch_hdr hdr = {
-			.flags = t->relation
-		};
-
-		if (t->inverted)
-			hdr.flags |= TCF_EM_INVERT;
-		
-		addattr_l(n, MAX_MSG, index++, NULL, 0);
-
-		if (t->child) {
-			__u32 r = t->child_ref;
-			addraw_l(n, MAX_MSG, &hdr, sizeof(hdr));
-			addraw_l(n, MAX_MSG, &r, sizeof(r));
-		} else {
-			int num = 0, err;
-			char buf[64];
-			struct ematch_util *e;
-
-			if (t->args == NULL)
-				return -1;
-
-			strncpy(buf, (char*) t->args->data, sizeof(buf)-1);
-			e = get_ematch_kind(buf);
-			if (e == NULL) {
-				fprintf(stderr, "Unknown ematch \"%s\"\n",
-				    buf);
-				return -1;
-			}
-
-			err = lookup_map_id(buf, &num, EMATCH_MAP);
-			if (err < 0) {
-				if (err == -ENOENT)
-					map_warning(e->kind_num, buf);
-				return err;
-			}
-
-			hdr.kind = num;
-			if (e->parse_eopt(n, &hdr, t->args->next) < 0)
-				return -1;
-		}
-
-		tail->rta_len = (void*) NLMSG_TAIL(n) - (void*) tail;
-	}
-
-	return 0;
-}
-
-static int flatten_tree(struct ematch *head, struct ematch *tree)
-{
-	int i, count = 0;
-	struct ematch *t;
-
-	for (;;) {
-		count++;
-
-		if (tree->child) {
-			for (t = head; t->next; t = t->next);
-			t->next = tree->child;
-			count += flatten_tree(head, tree->child);
-		}
-
-		if (tree->relation == 0)
-			break;
-
-		tree = tree->next;
-	}
-
-	for (i = 0, t = head; t; t = t->next, i++)
-		t->index = i;
-
-	for (t = head; t; t = t->next)
-		if (t->child)
-			t->child_ref = t->child->index;
-
-	return count;
-}
-
-int em_parse_error(int err, struct bstr *args, struct bstr *carg,
-		   struct ematch_util *e, char *fmt, ...)
-{
-	va_list a;
-
-	va_start(a, fmt);
-	vfprintf(stderr, fmt, a);
-	va_end(a);
-
-	if (ematch_err)
-		fprintf(stderr, ": %s\n... ", ematch_err);
-	else
-		fprintf(stderr, "\n... ");
-
-	while (ematch_argc < begin_argc) {
-		if (ematch_argc == (begin_argc - 1))
-			fprintf(stderr, ">>%s<< ", *begin_argv);
-		else
-			fprintf(stderr, "%s ", *begin_argv);
-		begin_argv++;
-		begin_argc--;
-	}
-	
-	fprintf(stderr, "...\n");
-
-	if (args) {
-		fprintf(stderr, "... %s(", e->kind);
-		while (args) {
-			fprintf(stderr, "%s", args == carg ? ">>" : "");
-			bstr_print(stderr, args, 1);
-			fprintf(stderr, "%s%s", args == carg ? "<<" : "",
-			    args->next ? " " : "");
-			args = args->next;
-		}
-		fprintf(stderr, ")...\n");
-
-	}
-
-	if (e == NULL) {
-		fprintf(stderr,
-		    "Usage: EXPR\n" \
-		    "where: EXPR  := TERM [ { and | or } EXPR ]\n" \
-		    "       TERM  := [ not ] { MATCH | '(' EXPR ')' }\n" \
-		    "       MATCH := module '(' ARGS ')'\n" \
-		    "       ARGS := ARG1 ARG2 ...\n" \
-		    "\n" \
-		    "Example: a(x y) and not (b(x) or c(x y z))\n");
-	} else
-		e->print_usage(stderr);
-
-	return -err;
-}
-
-static inline void free_ematch_err(void)
-{
-	if (ematch_err) {
-		free(ematch_err);
-		ematch_err = NULL;
-	}
-}
-
-extern int ematch_parse(void);
-
-int parse_ematch(int *argc_p, char ***argv_p, int tca_id, struct nlmsghdr *n)
-{
-	begin_argc = ematch_argc = *argc_p;
-	begin_argv = ematch_argv = *argv_p;
-
-	if (ematch_parse()) {
-		int err = em_parse_error(EINVAL, NULL, NULL, NULL,
-		    "Parse error");
-		free_ematch_err();
-		return err;
-	}
-
-	free_ematch_err();
-
-	/* undo look ahead by parser */
-	ematch_argc++;
-	ematch_argv--;
-
-	if (ematch_root) {
-		struct rtattr *tail, *tail_list;
-
-		struct tcf_ematch_tree_hdr hdr = {
-			.nmatches = flatten_tree(ematch_root, ematch_root),
-			.progid = TCF_EM_PROG_TC
-		};
-
-		tail = NLMSG_TAIL(n);
-		addattr_l(n, MAX_MSG, tca_id, NULL, 0);
-		addattr_l(n, MAX_MSG, TCA_EMATCH_TREE_HDR, &hdr, sizeof(hdr));
-
-		tail_list = NLMSG_TAIL(n);
-		addattr_l(n, MAX_MSG, TCA_EMATCH_TREE_LIST, NULL, 0);
-
-		if (parse_tree(n, ematch_root) < 0)
-			return -1;
-
-		tail_list->rta_len = (void*) NLMSG_TAIL(n) - (void*) tail_list;
-		tail->rta_len = (void*) NLMSG_TAIL(n) - (void*) tail;
-	}
-
-	*argc_p = ematch_argc;
-	*argv_p = ematch_argv;
-
-	return 0;
-}
-
-static int print_ematch_seq(FILE *fd, struct rtattr **tb, int start,
-			    int prefix)
-{
-	int n, i = start;
-	struct tcf_ematch_hdr *hdr;
-	int dlen;
-	void *data;
-
-	for (;;) {
-		if (tb[i] == NULL)
-			return -1;
-
-		dlen = RTA_PAYLOAD(tb[i]) - sizeof(*hdr);
-		data = (void *) RTA_DATA(tb[i]) + sizeof(*hdr);
-
-		if (dlen < 0)
-			return -1;
-
-		hdr = RTA_DATA(tb[i]);
-
-		if (hdr->flags & TCF_EM_INVERT)
-			fprintf(fd, "NOT ");
-
-		if (hdr->kind == 0) {
-			__u32 ref;
-
-			if (dlen < sizeof(__u32))
-				return -1;
-
-			ref = *(__u32 *) data;
-			fprintf(fd, "(\n");
-			for (n = 0; n <= prefix; n++)
-				fprintf(fd, "  ");
-			if (print_ematch_seq(fd, tb, ref + 1, prefix + 1) < 0)
-				return -1;
-			for (n = 0; n < prefix; n++)
-				fprintf(fd, "  ");
-			fprintf(fd, ") ");
-
-		} else {
-			struct ematch_util *e;
-
-			e = get_ematch_kind_num(hdr->kind);
-			if (e == NULL)
-				fprintf(fd, "[unknown ematch %d]\n",
-				    hdr->kind);
-			else {
-				fprintf(fd, "%s(", e->kind);
-				if (e->print_eopt(fd, hdr, data, dlen) < 0)
-					return -1;
-				fprintf(fd, ")\n");
-			}
-			if (hdr->flags & TCF_EM_REL_MASK)
-				for (n = 0; n < prefix; n++)
-					fprintf(fd, "  ");
-		}
-
-		switch (hdr->flags & TCF_EM_REL_MASK) {
-			case TCF_EM_REL_AND:
-				fprintf(fd, "AND ");
-				break;
-
-			case TCF_EM_REL_OR:
-				fprintf(fd, "OR ");
-				break;
-
-			default:
-				return 0;
-		}
-
-		i++;
-	}
-	
-	return 0;
-}
-
-static int print_ematch_list(FILE *fd, struct tcf_ematch_tree_hdr *hdr,
-			     struct rtattr *rta)
-{
-	int err = -1;
-	struct rtattr **tb;
-
-	tb = malloc((hdr->nmatches + 1) * sizeof(struct rtattr *));
-	if (tb == NULL)
-		return -1;
-
-	if (parse_rtattr_nested(tb, hdr->nmatches, rta) < 0)
-		goto errout;
-
-	fprintf(fd, "\n  ");
-	if (print_ematch_seq(fd, tb, 1, 1) < 0)
-		goto errout;
-
-	err = 0;
-errout:
-	free(tb);
-	return err;
-}
-
-int print_ematch(FILE *fd, const struct rtattr *rta)
-{
-	struct rtattr *tb[TCA_EMATCH_TREE_MAX+1];
-	struct tcf_ematch_tree_hdr *hdr;
-
-	if (parse_rtattr_nested(tb, TCA_EMATCH_TREE_MAX, rta) < 0)
-		return -1;
-
-	if (tb[TCA_EMATCH_TREE_HDR] == NULL) {
-		fprintf(stderr, "Missing ematch tree header\n");
-		return -1;
-	}
-
-	if (tb[TCA_EMATCH_TREE_LIST] == NULL) {
-		fprintf(stderr, "Missing ematch tree list\n");
-		return -1;
-	}
-
-	if (RTA_PAYLOAD(tb[TCA_EMATCH_TREE_HDR]) < sizeof(*hdr)) {
-		fprintf(stderr, "Ematch tree header size mismatch\n");
-		return -1;
-	}
-
-	hdr = RTA_DATA(tb[TCA_EMATCH_TREE_HDR]);
-
-	return print_ematch_list(fd, hdr, tb[TCA_EMATCH_TREE_LIST]);
-}