1 /*- 2 * Copyright (c) 2002 Poul-Henning Kamp 3 * Copyright (c) 2002 Networks Associates Technology, Inc. 4 * All rights reserved. 5 * 6 * This software was developed for the FreeBSD Project by Poul-Henning Kamp 7 * and NAI Labs, the Security Research Division of Network Associates, Inc. 8 * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the 9 * DARPA CHATS research program. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. The names of the authors may not be used to endorse or promote 20 * products derived from this software without specific prior written 21 * permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * $FreeBSD$ 36 */ 37 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <string.h> 41 #include <unistd.h> 42 #include <fcntl.h> 43 #include <ctype.h> 44 #include <sys/stat.h> 45 #include <sys/mman.h> 46 #include <sys/queue.h> 47 #include <sys/sbuf.h> 48 #include <err.h> 49 #include <bsdxml.h> 50 51 FILE *fsubs; 52 53 struct node { 54 LIST_HEAD(, node) children; 55 LIST_ENTRY(node) siblings; 56 struct node *parent; 57 const char *name; 58 struct sbuf *cont; 59 struct sbuf *key; 60 char *id; 61 char *ref; 62 }; 63 64 struct mytree { 65 struct node *top; 66 struct node *cur; 67 int indent; 68 int ignore; 69 }; 70 71 struct ref { 72 LIST_ENTRY(ref) next; 73 char *k1; 74 char *k2; 75 }; 76 77 LIST_HEAD(, ref) refs = LIST_HEAD_INITIALIZER(&refs); 78 79 static struct node * 80 new_node(void) 81 { 82 struct node *np; 83 84 np = calloc(1, sizeof *np); 85 np->cont = sbuf_new_auto(); 86 sbuf_clear(np->cont); 87 np->key = sbuf_new_auto(); 88 sbuf_clear(np->key); 89 LIST_INIT(&np->children); 90 return (np); 91 } 92 93 static void 94 indent(int n) 95 { 96 97 printf("%*.*s", n, n, ""); 98 } 99 100 static void 101 StartElement(void *userData, const char *name, const char **attr) 102 { 103 struct mytree *mt; 104 struct node *np; 105 int i; 106 107 mt = userData; 108 if (!strcmp(name, "FreeBSD")) { 109 mt->ignore = 1; 110 return; 111 } 112 mt->ignore = 0; 113 mt->indent += 2; 114 np = new_node(); 115 for (i = 0; attr[i]; i += 2) { 116 if (!strcmp(attr[i], "id")) 117 np->id = strdup(attr[i+1]); 118 else if (!strcmp(attr[i], "ref")) 119 np->ref = strdup(attr[i+1]); 120 } 121 np->name = strdup(name); 122 sbuf_cat(np->key, name); 123 sbuf_cat(np->key, "::"); 124 np->parent = mt->cur; 125 LIST_INSERT_HEAD(&mt->cur->children, np, siblings); 126 mt->cur = np; 127 } 128 129 static void 130 EndElement(void *userData, const char *name __unused) 131 { 132 struct mytree *mt; 133 struct node *np; 134 135 mt = userData; 136 if (mt->ignore) 137 return; 138 139 mt->indent -= 2; 140 sbuf_finish(mt->cur->cont); 141 LIST_FOREACH(np, &mt->cur->children, siblings) { 142 if (strcmp(np->name, "name")) 143 continue; 144 sbuf_cat(mt->cur->key, sbuf_data(np->cont)); 145 break; 146 } 147 sbuf_finish(mt->cur->key); 148 mt->cur = mt->cur->parent; 149 } 150 151 static void 152 CharData(void *userData , const XML_Char *s , int len) 153 { 154 struct mytree *mt; 155 const char *b, *e; 156 157 mt = userData; 158 if (mt->ignore) 159 return; 160 b = s; 161 e = s + len - 1; 162 while (isspace(*b) && b < e) 163 b++; 164 while (isspace(*e) && e > b) 165 e--; 166 if (e != b || *b) 167 sbuf_bcat(mt->cur->cont, b, e - b + 1); 168 } 169 170 static struct mytree * 171 dofile(char *filename) 172 { 173 XML_Parser parser; 174 struct mytree *mt; 175 struct stat st; 176 int fd; 177 char *p; 178 int i; 179 180 parser = XML_ParserCreate(NULL); 181 mt = calloc(1, sizeof *mt); 182 mt->top = new_node(); 183 mt->top->name = "(top)"; 184 mt->top->parent = mt->top; 185 mt->cur = mt->top; 186 sbuf_finish(mt->top->key); 187 sbuf_finish(mt->top->cont); 188 XML_SetUserData(parser, mt); 189 XML_SetElementHandler(parser, StartElement, EndElement); 190 XML_SetCharacterDataHandler(parser, CharData); 191 fd = open(filename, O_RDONLY); 192 if (fd < 0) 193 err(1, filename); 194 fstat(fd, &st); 195 p = mmap(NULL, st.st_size, PROT_READ, MAP_NOCORE|MAP_PRIVATE, fd, 0); 196 i = XML_Parse(parser, p, st.st_size, 1); 197 if (i != 1) 198 errx(1, "XML_Parse complained -> %d", i); 199 munmap(p, st.st_size); 200 close(fd); 201 XML_ParserFree(parser); 202 sbuf_finish(mt->top->cont); 203 if (i) 204 return (mt); 205 else 206 return (NULL); 207 } 208 209 static void 210 print_node(struct node *np) 211 { 212 printf("\"%s\" -- \"%s\" -- \"%s\"", np->name, sbuf_data(np->cont), sbuf_data(np->key)); 213 if (np->id) 214 printf(" id=\"%s\"", np->id); 215 if (np->ref) 216 printf(" ref=\"%s\"", np->ref); 217 printf("\n"); 218 } 219 220 static void 221 print_tree(struct node *np, int n) 222 { 223 struct node *np1; 224 225 indent(n); printf("%s id=%s ref=%s\n", np->name, np->id, np->ref); 226 LIST_FOREACH(np1, &np->children, siblings) 227 print_tree(np1, n + 2); 228 } 229 230 static void 231 sort_node(struct node *np) 232 { 233 struct node *np1, *np2; 234 int n; 235 236 LIST_FOREACH(np1, &np->children, siblings) 237 sort_node(np1); 238 do { 239 np1 = LIST_FIRST(&np->children); 240 n = 0; 241 for (;;) { 242 if (np1 == NULL) 243 return; 244 np2 = LIST_NEXT(np1, siblings); 245 if (np2 == NULL) 246 return; 247 if (strcmp(sbuf_data(np1->key), sbuf_data(np2->key)) > 0) { 248 LIST_REMOVE(np2, siblings); 249 LIST_INSERT_BEFORE(np1, np2, siblings); 250 n++; 251 break; 252 } 253 np1 = np2; 254 } 255 } while (n); 256 } 257 258 static int 259 refcmp(char *r1, char *r2) 260 { 261 struct ref *r; 262 263 LIST_FOREACH(r, &refs, next) { 264 if (!strcmp(r1, r->k1)) 265 return (strcmp(r2, r->k2)); 266 } 267 r = calloc(1, sizeof(*r)); 268 r->k1 = strdup(r1); 269 r->k2 = strdup(r2); 270 LIST_INSERT_HEAD(&refs, r, next); 271 if (fsubs != NULL) { 272 fprintf(fsubs, "s/%s/%s/g\n", r1, r2); 273 fflush(fsubs); 274 } 275 return (0); 276 } 277 278 static int compare_node2(struct node *n1, struct node *n2, int in); 279 280 static int 281 compare_node(struct node *n1, struct node *n2, int in) 282 { 283 int i; 284 struct node *n1a, *n2a; 285 286 i = strcmp(n1->name, n2->name); 287 if (i) 288 return (i); 289 if (n1->id && n2->id) 290 i = refcmp(n1->id, n2->id); 291 else if (n1->id || n2->id) 292 i = -1; 293 if (i) 294 return (i); 295 if (n1->ref && n2->ref) 296 i = refcmp(n1->ref, n2->ref); 297 else if (n1->ref || n2->ref) 298 i = -1; 299 if (i) 300 return (i); 301 if (!strcmp(n1->name, "ref")) 302 i = refcmp(sbuf_data(n1->cont), sbuf_data(n2->cont)); 303 else 304 i = strcmp(sbuf_data(n1->cont), sbuf_data(n2->cont)); 305 if (i) 306 return (1); 307 n1a = LIST_FIRST(&n1->children); 308 n2a = LIST_FIRST(&n2->children); 309 for (;;) { 310 if (n1a == NULL && n2a == NULL) 311 return (0); 312 if (n1a != NULL && n2a == NULL) { 313 printf("1>"); 314 indent(in); 315 print_node(n1a); 316 printf("2>\n"); 317 return (1); 318 } 319 if (n1a == NULL && n2a != NULL) { 320 printf("1>\n"); 321 printf("2>"); 322 indent(in); 323 print_node(n2a); 324 return (1); 325 } 326 i = compare_node2(n1a, n2a, in + 2); 327 if (i) 328 return (1); 329 n1a = LIST_NEXT(n1a, siblings); 330 n2a = LIST_NEXT(n2a, siblings); 331 } 332 return (0); 333 } 334 335 static int 336 compare_node2(struct node *n1, struct node *n2, int in) 337 { 338 int i; 339 340 i = compare_node(n1, n2, in); 341 if (i) { 342 printf("1>"); 343 indent(in); 344 print_node(n1); 345 printf("2>"); 346 indent(in); 347 print_node(n2); 348 } 349 return (i); 350 } 351 352 353 354 int 355 main(int argc, char **argv) 356 { 357 struct mytree *t1, *t2; 358 int i; 359 360 fsubs = fopen("_.subs", "w"); 361 setbuf(stdout, NULL); 362 setbuf(stderr, NULL); 363 if (argc != 3) 364 errx(1, "usage: %s file1 file2", argv[0]); 365 366 t1 = dofile(argv[1]); 367 if (t1 == NULL) 368 errx(2, "XML parser error on file %s", argv[1]); 369 sort_node(t1->top); 370 t2 = dofile(argv[2]); 371 if (t2 == NULL) 372 errx(2, "XML parser error on file %s", argv[2]); 373 sort_node(t2->top); 374 i = compare_node(t1->top, t2->top, 0); 375 return (i); 376 } 377 378