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-rw-r--r--third_party/heimdal/lib/asn1/main.c495
1 files changed, 495 insertions, 0 deletions
diff --git a/third_party/heimdal/lib/asn1/main.c b/third_party/heimdal/lib/asn1/main.c
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+++ b/third_party/heimdal/lib/asn1/main.c
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+/*
+ * Copyright (c) 1997-2005 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ *
+ * 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. Neither the name of the Institute nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE 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 INSTITUTE 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.
+ */
+
+#include "gen_locl.h"
+#include <getarg.h>
+#include "lex.h"
+
+extern FILE *yyin;
+
+static getarg_strings preserve;
+static getarg_strings seq;
+static getarg_strings decorate;
+
+static int
+strcmp4mergesort_r(const void *ap, const void *bp, void *d)
+{
+ const char *a = *(const char **)ap;
+ const char *b = *(const char **)bp;
+ char sep = *(const char *)d;
+ int cmp;
+
+ if (sep) {
+ const char *sepa = strchr(a, sep);
+ const char *sepb = strchr(b, sep);
+ size_t alen, blen;
+
+ if (sepa == NULL) sepa = a + strlen(a);
+ if (sepb == NULL) sepb = b + strlen(b);
+ alen = sepa - a;
+ blen = sepb - b;
+ cmp = strncmp(a, b, alen > blen ? alen : blen);
+ if (cmp == 0)
+ cmp = alen - blen;
+ } else
+ cmp = strcmp(a, b);
+ if (cmp == 0)
+ return (uintptr_t)ap - (uintptr_t)bp; /* stable sort */
+ return cmp;
+}
+
+static int
+prefix_check(const char *s, const char *p, size_t plen, char sep, int *cmp)
+{
+ if ((*cmp = strncmp(p, s, plen)) == 0 && s[plen] == sep)
+ return 1;
+ if (*cmp == 0)
+ *cmp = 1;
+ return 0;
+}
+
+static ssize_t
+bsearch_strings(struct getarg_strings *strs, const char *p,
+ char sep, ssize_t *more)
+{
+ ssize_t right = (ssize_t)strs->num_strings - 1;
+ ssize_t left = 0;
+ ssize_t plen = 0;
+ int cmp;
+
+ if (sep)
+ plen = strlen(p);
+
+ if (strs->num_strings == 0)
+ return -1;
+
+ if (sep && more && *more > -1) {
+ /* If *more > -1 we're continuing an iteration */
+ if (*more > right)
+ return -1;
+ if (prefix_check(strs->strings[*more], p, plen, sep, &cmp))
+ return (*more)++;
+ (*more)++;
+ return -1;
+ }
+
+ while (left <= right) {
+ ssize_t mid = left + (right - left) / 2;
+
+ if (sep) {
+ int cmp2;
+
+ while (prefix_check(strs->strings[mid], p, plen, sep, &cmp) &&
+ mid > 0 &&
+ prefix_check(strs->strings[mid - 1], p, plen, sep, &cmp2))
+ mid--;
+ } else
+ cmp = strcmp(p, strs->strings[mid]);
+ if (cmp == 0) {
+ if (more)
+ *more = mid + 1;
+ return mid;
+ }
+ if (cmp < 0)
+ right = mid - 1; /* -1 if `p' is smaller than smallest in strs */
+ else
+ left = mid + 1;
+ }
+ return -1;
+}
+
+int
+preserve_type(const char *p)
+{
+ return bsearch_strings(&preserve, p, '\0', 0) > -1;
+}
+
+int
+seq_type(const char *p)
+{
+ return bsearch_strings(&seq, p, '\0', 0) > -1;
+}
+
+/*
+ * Split `s' on `sep' and fill fs[] with pointers to the substrings.
+ *
+ * Only the first substring is to be freed -- the rest share the same
+ * allocation.
+ *
+ * The last element may contain `sep' chars if there are more fields in `s'
+ * than output locations in `fs[]'.
+ */
+static void
+split_str(const char *s, char sep, char ***fs)
+{
+ size_t i;
+
+ fs[0][0] = estrdup(s);
+ for (i = 1; fs[i]; i++) {
+ char *q;
+
+ if ((q = strchr(fs[i-1][0], sep)) == NULL)
+ break;
+ *(q++) = '\0';
+ fs[i][0] = q;
+ }
+ for (; fs[i]; i++)
+ fs[i][0] = NULL;
+}
+
+/*
+ * If `p' is "decorated" with a not-to-be-encoded-or-decoded field,
+ * output the field's typename and fieldname, whether it's optional, whether
+ * it's an ASN.1 type or an "external" type, and if external the names of
+ * functions to copy and free values of that type.
+ */
+int
+decorate_type(const char *p, struct decoration *deco, ssize_t *more)
+{
+ ssize_t i;
+ char **s[7];
+ char *junk = NULL;
+ char *cp;
+
+ deco->first = *more == -1;
+ deco->decorated = 0;
+ deco->field_type = NULL;
+ if ((i = bsearch_strings(&decorate, p, ':', more)) == -1)
+ return 0;
+
+ deco->decorated = 1;
+ deco->opt = deco->ext = deco->ptr = 0;
+ deco->void_star = deco->struct_star = 0;
+ deco->field_name = deco->copy_function_name = deco->free_function_name =
+ deco->header_name = NULL;
+
+ s[0] = &deco->field_type;
+ s[1] = &deco->field_name;
+ s[2] = &deco->copy_function_name;
+ s[3] = &deco->free_function_name;
+ s[4] = &deco->header_name;
+ s[5] = &junk;
+ s[6] = NULL;
+ split_str(decorate.strings[i] + strlen(p) + 1, ':', s);
+
+ if (junk || deco->field_type[0] == '\0' || !deco->field_name ||
+ deco->field_name[0] == '\0' || deco->field_name[0] == '?') {
+ errx(1, "Invalidate type decoration specification: --decorate=\"%s\"",
+ decorate.strings[i]);
+ }
+ if ((cp = strchr(deco->field_name, '?'))) {
+ deco->opt = 1;
+ *cp = '\0';
+ }
+ if (strcmp(deco->field_type, "void*") == 0 ||
+ strcmp(deco->field_type, "void *") == 0) {
+ deco->ext = deco->ptr = deco->void_star = 1;
+ deco->opt = 1;
+ deco->header_name = NULL;
+ } else if (strncmp(deco->field_type, "struct ", sizeof("struct ") - 1) == 0 &&
+ deco->field_type[strlen(deco->field_type) - 1] == '*')
+ deco->ptr = deco->struct_star = 1;
+ if (deco->ptr || deco->copy_function_name)
+ deco->ext = 1;
+ if (deco->ext && deco->copy_function_name && !deco->copy_function_name[0])
+ deco->copy_function_name = NULL;
+ if (deco->ext && deco->free_function_name && !deco->free_function_name[0])
+ deco->free_function_name = NULL;
+ if (deco->header_name && !deco->header_name[0])
+ deco->header_name = NULL;
+ if (deco->ptr)
+ deco->opt = 0;
+ return 1;
+}
+
+static const char *
+my_basename(const char *fn)
+{
+ const char *base, *p;
+
+ for (p = base = fn; *p; p++) {
+#ifdef WIN32
+ if (*p == '/' || *p == '\\')
+ base = p + 1;
+#else
+ if (*p == '/')
+ base = p + 1;
+#endif
+ }
+ return base;
+}
+
+const char *fuzzer_string = "";
+const char *enum_prefix;
+const char *name;
+int prefix_enum;
+int fuzzer_flag;
+int support_ber;
+int template_flag;
+int rfc1510_bitstring;
+int one_code_file;
+char *option_file;
+int parse_units_flag = 1;
+char *type_file_string = "krb5-types.h";
+int original_order;
+int version_flag;
+int help_flag;
+struct getargs args[] = {
+ { "fuzzer", 0, arg_flag, &fuzzer_flag, NULL, NULL },
+ { "template", 0, arg_flag, &template_flag, NULL, NULL },
+ { "prefix-enum", 0, arg_flag, &prefix_enum,
+ "prefix C enum labels for ENUMERATED types and INTEGER types with the "
+ "type's name", NULL },
+ { "enum-prefix", 0, arg_string, &enum_prefix,
+ "prefix for C enum labels for ENUMERATED types and INTEGER types with "
+ "enumerated values", "PREFIX" },
+ { "encode-rfc1510-bit-string", 0, arg_flag, &rfc1510_bitstring,
+ "Use RFC1510 incorrect BIT STRING handling for all BIT STRING types "
+ "in the module", NULL },
+ { "decode-dce-ber", 0, arg_flag, &support_ber,
+ "Allow DCE-style BER on decode", NULL },
+ { "support-ber", 0, arg_flag, &support_ber, "Allow BER on decode", NULL },
+ { "preserve-binary", 0, arg_strings, &preserve,
+ "Names of types for which to generate _save fields, saving original "
+ "encoding, in containing structures (useful for signature "
+ "verification)", "TYPE" },
+ { "sequence", 0, arg_strings, &seq,
+ "Generate add/remove functions for SEQUENCE OF types", "TYPE" },
+ { "decorate", 0, arg_strings, &decorate,
+ "Generate private field for SEQUENCE/SET type", "DECORATION" },
+ { "one-code-file", 0, arg_flag, &one_code_file, NULL, NULL },
+ { "gen-name", 0, arg_string, &name,
+ "Name of generated module", "NAME" },
+ { "option-file", 0, arg_string, &option_file,
+ "File with additional compiler CLI options", "FILE" },
+ { "original-order", 0, arg_flag, &original_order,
+ "Define C types and functions in the order in which they appear in "
+ "the ASN.1 module instead of topologically sorting types. This "
+ "is useful for comparing output to earlier compiler versions.",
+ NULL },
+ { "parse-units", 0, arg_negative_flag, &parse_units_flag,
+ "Do not generate roken-style units", NULL },
+ { "type-file", 0, arg_string, &type_file_string,
+ "Name of a C header file to generate includes of for base types",
+ "FILE" },
+ { "version", 0, arg_flag, &version_flag, NULL, NULL },
+ { "help", 0, arg_flag, &help_flag, NULL, NULL }
+};
+int num_args = sizeof(args) / sizeof(args[0]);
+
+static void
+usage(int code)
+{
+ if (code)
+ dup2(STDERR_FILENO, STDOUT_FILENO);
+ else
+ dup2(STDOUT_FILENO, STDERR_FILENO);
+ arg_printusage(args, num_args, NULL, "[asn1-file [name]]");
+ fprintf(stderr,
+ "\nA DECORATION is one of:\n\n"
+ "\tTYPE:FTYPE:fname[?]\n"
+ "\tTYPE:FTYPE:fname[?]:[copy_function]:[free_function]:header\n"
+ "\tTYPE:void:fname:::\n"
+ "\nSee the manual page.\n");
+ exit(code);
+}
+
+int error_flag;
+
+int
+main(int argc, char **argv)
+{
+ int ret;
+ const char *file;
+ FILE *opt = NULL;
+ int optidx = 0;
+ char **arg = NULL;
+ size_t len = 0;
+ size_t sz = 0;
+ int i;
+
+ setprogname(argv[0]);
+ if (getarg(args, num_args, argc, argv, &optidx))
+ usage(1);
+ if (help_flag)
+ usage(0);
+ if (version_flag) {
+ print_version(NULL);
+ exit(0);
+ }
+ if (argc == optidx) {
+ /* Compile the module on stdin */
+ file = "stdin";
+ name = "stdin";
+ yyin = stdin;
+ } else {
+ /* Compile a named module */
+ file = argv[optidx];
+
+ /*
+ * If the .asn1 stem is not given, then assume it, and also assume
+ * --option-file was given if the .opt file exists
+ */
+ if (strchr(file, '.') == NULL) {
+ char *s = NULL;
+
+ if (asprintf(&s, "%s.opt", file) == -1 || s == NULL)
+ err(1, "Out of memory");
+ if ((opt = fopen(s, "r")))
+ option_file = s;
+ else
+ free(s);
+ if (asprintf(&s, "%s.asn1", file) == -1 || s == NULL)
+ err(1, "Out of memory");
+ file = s;
+ }
+ yyin = fopen (file, "r");
+ if (yyin == NULL)
+ err (1, "open %s", file);
+ if (argc == optidx + 1) {
+ char *p;
+
+ /* C module name substring not given; derive from file name */
+ name = my_basename(estrdup(file));
+ p = strrchr(name, '.');
+ if (p)
+ *p = '\0';
+ } else
+ name = argv[optidx + 1];
+ }
+
+ /*
+ * Parse extra options file
+ */
+ if (option_file) {
+ char buf[1024];
+
+ if (opt == NULL &&
+ (opt = fopen(option_file, "r")) == NULL)
+ err(1, "Could not open given option file %s", option_file);
+
+ arg = calloc(2, sizeof(arg[0]));
+ if (arg == NULL) {
+ perror("calloc");
+ exit(1);
+ }
+ arg[0] = option_file;
+ arg[1] = NULL;
+ len = 1;
+ sz = 2;
+
+ while (fgets(buf, sizeof(buf), opt) != NULL) {
+ size_t buflen, ws;
+
+ buf[strcspn(buf, "\n\r")] = '\0';
+
+ buflen = strlen(buf);
+ if ((ws = strspn(buf, " \t")))
+ memmove(buf, buf + ws, buflen - ws);
+ if (buf[0] == '\0' || buf[0] == '#')
+ continue;
+
+ if (len + 1 >= sz) {
+ arg = realloc(arg, (sz + (sz>>1) + 2) * sizeof(arg[0]));
+ if (arg == NULL) {
+ perror("malloc");
+ exit(1);
+ }
+ sz += (sz>>1) + 2;
+ }
+ arg[len] = strdup(buf);
+ if (arg[len] == NULL) {
+ perror("strdup");
+ exit(1);
+ }
+ arg[len + 1] = NULL;
+ len++;
+ }
+ fclose(opt);
+
+ optidx = 0;
+ if(getarg(args, num_args, len, arg, &optidx))
+ usage(1);
+
+ if (len != optidx) {
+ fprintf(stderr, "extra args");
+ exit(1);
+ }
+ }
+
+ if (fuzzer_flag) {
+ if (!template_flag) {
+ printf("can't do fuzzer w/o --template");
+ exit(1);
+ }
+#ifdef ASN1_FUZZER
+ fuzzer_string = "_fuzzer";
+#endif
+ }
+
+ if (preserve.num_strings)
+ mergesort_r(preserve.strings, preserve.num_strings,
+ sizeof(preserve.strings[0]), strcmp4mergesort_r, "");
+ if (seq.num_strings)
+ mergesort_r(seq.strings, seq.num_strings, sizeof(seq.strings[0]),
+ strcmp4mergesort_r, "");
+ if (decorate.num_strings)
+ mergesort_r(decorate.strings, decorate.num_strings,
+ sizeof(decorate.strings[0]), strcmp4mergesort_r, ":");
+
+ init_generate(file, name);
+
+ if (one_code_file)
+ generate_header_of_codefile(name);
+
+ initsym ();
+ ret = yyparse ();
+ if(ret != 0 || error_flag != 0)
+ exit(1);
+ if (!original_order)
+ generate_types();
+ if (argc != optidx)
+ fclose(yyin);
+
+ if (one_code_file)
+ close_codefile();
+ close_generate();
+
+ if (arg) {
+ for (i = 1; i < len; i++)
+ free(arg[i]);
+ free(arg);
+ }
+
+ return 0;
+}
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