/*- * Copyright (c) 2002 Poul-Henning Kamp * Copyright (c) 2002 Networks Associates Technology, Inc. * All rights reserved. * * This software was developed for the FreeBSD Project by Poul-Henning Kamp * and NAI Labs, the Security Research Division of Network Associates, Inc. * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the * DARPA CHATS research program. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the authors may not be used to endorse or promote * products derived from this software without specific prior written * permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ #include #include #include #include #include #include #include #include #include #include #include #include "xmlparse.h" struct node { LIST_HEAD(, node) children; LIST_ENTRY(node) siblings; struct node *parent; const char *name; struct sbuf *cont; struct sbuf *key; char *id; char *ref; }; struct mytree { struct node *top; struct node *cur; int indent; int ignore; }; struct ref { LIST_ENTRY(ref) next; char *k1; char *k2; }; LIST_HEAD(, ref) refs = LIST_HEAD_INITIALIZER(&refs); static struct node * new_node(void) { struct node *np; np = calloc(1, sizeof *np); np->cont = sbuf_new(NULL, NULL, 0, SBUF_AUTOEXTEND); sbuf_clear(np->cont); np->key = sbuf_new(NULL, NULL, 0, SBUF_AUTOEXTEND); sbuf_clear(np->key); LIST_INIT(&np->children); return (np); } static void indent(int n) { printf("%*.*s", n, n, ""); } static void StartElement(void *userData, const char *name, const char **attr) { struct mytree *mt; struct node *np; int i; mt = userData; if (!strcmp(name, "FreeBSD")) { mt->ignore = 1; return; } mt->ignore = 0; mt->indent += 2; np = new_node(); for (i = 0; attr[i]; i += 2) { if (!strcmp(attr[i], "id")) np->id = strdup(attr[i+1]); else if (!strcmp(attr[i], "ref")) np->ref = strdup(attr[i+1]); } np->name = strdup(name); sbuf_cat(np->key, name); sbuf_cat(np->key, "::"); np->parent = mt->cur; LIST_INSERT_HEAD(&mt->cur->children, np, siblings); mt->cur = np; } static void EndElement(void *userData, const char *name __unused) { struct mytree *mt; struct node *np; mt = userData; if (mt->ignore) return; mt->indent -= 2; sbuf_finish(mt->cur->cont); LIST_FOREACH(np, &mt->cur->children, siblings) { if (strcmp(np->name, "name")) continue; sbuf_cat(mt->cur->key, sbuf_data(np->cont)); break; } sbuf_finish(mt->cur->key); mt->cur = mt->cur->parent; } static void CharData(void *userData , const XML_Char *s , int len) { struct mytree *mt; const char *b, *e; mt = userData; if (mt->ignore) return; b = s; e = s + len - 1; while (isspace(*b) && b < e) b++; while (isspace(*e) && e > b) e--; if (e != b) sbuf_bcat(mt->cur->cont, b, e - b + 1); } static struct mytree * dofile(char *filename) { XML_Parser parser; struct mytree *mt; struct stat st; int fd; char *p; int i; parser = XML_ParserCreate(NULL); mt = calloc(1, sizeof *mt); mt->top = new_node(); mt->top->name = "(top)"; mt->top->parent = mt->top; mt->cur = mt->top; sbuf_finish(mt->top->key); sbuf_finish(mt->top->cont); XML_SetUserData(parser, mt); XML_SetElementHandler(parser, StartElement, EndElement); XML_SetCharacterDataHandler(parser, CharData); fd = open(filename, O_RDONLY); if (fd < 0) err(1, filename); fstat(fd, &st); p = mmap(NULL, st.st_size, PROT_READ, MAP_NOCORE|MAP_PRIVATE, fd, 0); i = XML_Parse(parser, p, st.st_size, 1); if (i != 1) errx(1, "XML_Parse complained -> %d", i); munmap(p, st.st_size); close(fd); XML_ParserFree(parser); sbuf_finish(mt->top->cont); if (i) return (mt); else return (NULL); } static void print_node(struct node *np) { printf("\"%s\" -- \"%s\" -- \"%s\"", np->name, sbuf_data(np->cont), sbuf_data(np->key)); if (np->id) printf(" id=\"%s\"", np->id); if (np->ref) printf(" ref=\"%s\"", np->ref); printf("\n"); } static void print_tree(struct node *np, int n) { struct node *np1; indent(n); printf("%s id=%s ref=%s\n", np->name, np->id, np->ref); LIST_FOREACH(np1, &np->children, siblings) print_tree(np1, n + 2); } static void sort_node(struct node *np) { struct node *np1, *np2; int n; LIST_FOREACH(np1, &np->children, siblings) sort_node(np1); do { np1 = LIST_FIRST(&np->children); n = 0; for (;;) { if (np1 == NULL) return; np2 = LIST_NEXT(np1, siblings); if (np2 == NULL) return; if (strcmp(sbuf_data(np1->key), sbuf_data(np2->key)) > 0) { LIST_REMOVE(np2, siblings); LIST_INSERT_BEFORE(np1, np2, siblings); n++; break; } np1 = np2; } } while (n); } static int refcmp(char *r1, char *r2) { struct ref *r; LIST_FOREACH(r, &refs, next) { if (!strcmp(r1, r->k1)) return (strcmp(r2, r->k2)); } r = calloc(1, sizeof(*r)); r->k1 = strdup(r1); r->k2 = strdup(r2); LIST_INSERT_HEAD(&refs, r, next); return (0); } static int compare_node2(struct node *n1, struct node *n2, int in); static int compare_node(struct node *n1, struct node *n2, int in) { int i; struct node *n1a, *n2a; i = strcmp(n1->name, n2->name); if (i) return (i); if (n1->id && n2->id) i = refcmp(n1->id, n2->id); else if (n1->id || n2->id) i = -1; if (i) return (i); if (n1->ref && n2->ref) i = refcmp(n1->ref, n2->ref); else if (n1->ref || n2->ref) i = -1; if (i) return (i); if (!strcmp(n1->name, "ref")) i = refcmp(sbuf_data(n1->cont), sbuf_data(n2->cont)); else i = strcmp(sbuf_data(n1->cont), sbuf_data(n2->cont)); if (i) return (1); n1a = LIST_FIRST(&n1->children); n2a = LIST_FIRST(&n2->children); for (;;) { if (n1a == NULL && n2a == NULL) return (0); if (n1a != NULL && n2a == NULL) { printf("1>"); indent(in); print_node(n1a); printf("2>\n"); return (1); } if (n1a == NULL && n2a != NULL) { printf("1>\n"); printf("2>"); indent(in); print_node(n2a); return (1); } i = compare_node2(n1a, n2a, in + 2); if (i) return (1); n1a = LIST_NEXT(n1a, siblings); n2a = LIST_NEXT(n2a, siblings); } return (0); } static int compare_node2(struct node *n1, struct node *n2, int in) { int i; i = compare_node(n1, n2, in); if (i) { printf("1>"); indent(in); print_node(n1); printf("2>"); indent(in); print_node(n2); } return (i); } int main(int argc, char **argv) { struct mytree *t1, *t2; int i; setbuf(stdout, NULL); setbuf(stderr, NULL); if (argc != 3) errx(1, "usage: %s file1 file2", argv[0]); t1 = dofile(argv[1]); if (t1 == NULL) errx(2, "XML parser error on file %s", argv[1]); sort_node(t1->top); t2 = dofile(argv[2]); if (t2 == NULL) errx(2, "XML parser error on file %s", argv[2]); sort_node(t2->top); i = compare_node(t1->top, t2->top, 0); return (i); }