--- /dev/null
+/*
+ * Mode of operation:
+ * Each of the *.in files is XER-decoded, then converted into PER,
+ * then decoded back from PER, then encoded into XER again,
+ * and finally compared to the original encoding.
+ */
+#undef NDEBUG
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <unistd.h> /* for chdir(2) */
+#include <string.h>
+#include <dirent.h>
+#include <assert.h>
+#include <ctype.h>
+#include <errno.h>
+
+#include <PDU.h>
+
+#ifndef SRCDIR
+#define SRCDIR_S ".."
+#else
+#define STRINGIFY_MACRO2(x) #x
+#define STRINGIFY_MACRO(x) STRINGIFY_MACRO2(x)
+#define SRCDIR_S STRINGIFY_MACRO(SRCDIR)
+#endif
+
+enum expectation {
+ EXP_OK, /* Encoding/decoding must succeed */
+ EXP_CXER_EXACT, /* Encoding/decoding using CXER must be exact */
+ EXP_CXER_DIFF, /* Encoding/decoding using CXER must be different */
+ EXP_BROKEN, /* Decoding must fail */
+ EXP_DIFFERENT, /* Reconstruction will yield different encoding */
+ EXP_PER_NOCOMP, /* Not PER compatible */
+};
+
+static unsigned char buf[4096];
+static size_t buf_offset;
+
+static int
+_buf_writer(const void *buffer, size_t size, void *app_key) {
+ (void)app_key;
+ assert(buf_offset + size < sizeof(buf));
+ memcpy(buf + buf_offset, buffer, size);
+#ifdef ASN_EMIT_DEBUG
+ unsigned char *b, *bend;
+ b = buf + buf_offset;
+ bend = b + size;
+ fprintf(stderr, "=> [");
+ for(; b < bend; b++) {
+ if(*b >= 32 && *b < 127 && *b != '%')
+ fprintf(stderr, "%c", *b);
+ else
+ fprintf(stderr, "%%%02x", *b);
+ }
+ fprintf(stderr, "]:%zd\n", size);
+#endif
+ buf_offset += size;
+ return 0;
+}
+
+enum enctype {
+ AS_PER,
+ AS_DER,
+ AS_XER,
+ AS_CXER,
+};
+
+static void
+save_object_as(PDU_t *st, enum expectation exp, enum enctype how) {
+ asn_enc_rval_t rval; /* Return value */
+
+ buf_offset = 0;
+
+ /*
+ * Save object using specified method.
+ */
+ switch(how) {
+ case AS_PER:
+ rval = uper_encode(&asn_DEF_PDU, 0, st,
+ _buf_writer, 0);
+ if(exp == EXP_PER_NOCOMP)
+ assert(rval.encoded == -1);
+ else
+ assert(rval.encoded > 0);
+ fprintf(stderr, "SAVED OBJECT IN SIZE %zd\n", buf_offset);
+ return;
+ case AS_DER:
+ rval = der_encode(&asn_DEF_PDU, st,
+ _buf_writer, 0);
+ break;
+ case AS_XER:
+ rval = xer_encode(&asn_DEF_PDU, st, XER_F_BASIC,
+ _buf_writer, 0);
+ break;
+ case AS_CXER:
+ rval = xer_encode(&asn_DEF_PDU, st, XER_F_CANONICAL,
+ _buf_writer, 0);
+ break;
+ default:
+ assert(!"Unreachable");
+ }
+
+ if (rval.encoded == -1) {
+ fprintf(stderr,
+ "Cannot encode %s: %s\n",
+ rval.failed_type->name, strerror(errno));
+ assert(rval.encoded != -1);
+ return;
+ }
+
+ fprintf(stderr, "SAVED OBJECT IN SIZE %zd\n", buf_offset);
+}
+
+static PDU_t *
+load_object_from(const char *fname, enum expectation expectation, unsigned char *fbuf, size_t size, enum enctype how) {
+ asn_dec_rval_t rval;
+ PDU_t *st = 0;
+ size_t csize = 1;
+
+ if(getenv("INITIAL_CHUNK_SIZE"))
+ csize = atoi(getenv("INITIAL_CHUNK_SIZE"));
+
+ /* Perform multiple iterations with multiple chunks sizes */
+ for(; csize < 20; csize += 1) {
+ int fbuf_offset = 0;
+ int fbuf_left = size;
+ int fbuf_chunk = csize;
+
+ fprintf(stderr, "LOADING OBJECT OF SIZE %zd FROM [%s] as %s,"
+ " chunks %zd\n",
+ size, fname, how==AS_PER?"PER":"XER", csize);
+
+ if(st) ASN_STRUCT_FREE(asn_DEF_PDU, st);
+ st = 0;
+
+ do {
+ ASN_DEBUG("Decoding bytes %d..%d (left %d)",
+ fbuf_offset,
+ fbuf_chunk < fbuf_left
+ ? fbuf_chunk : fbuf_left,
+ fbuf_left);
+#ifdef ASN_EMIT_DEBUG
+ if(st) {
+ fprintf(stderr, "=== currently ===\n");
+ asn_fprint(stderr, &asn_DEF_PDU, st);
+ fprintf(stderr, "=== end ===\n");
+ }
+#endif
+ switch(how) {
+ case AS_XER:
+ rval = xer_decode(0, &asn_DEF_PDU, (void **)&st,
+ fbuf + fbuf_offset,
+ fbuf_chunk < fbuf_left
+ ? fbuf_chunk : fbuf_left);
+ break;
+ case AS_PER:
+ rval = uper_decode(0, &asn_DEF_PDU,
+ (void **)&st, fbuf + fbuf_offset,
+ fbuf_chunk < fbuf_left
+ ? fbuf_chunk : fbuf_left, 0, 0);
+ if(rval.code == RC_WMORE) {
+ rval.consumed = 0; /* Not restartable */
+ ASN_STRUCT_FREE(asn_DEF_PDU, st);
+ st = 0;
+ ASN_DEBUG("-> PER wants more");
+ } else {
+ ASN_DEBUG("-> PER ret %d/%ld",
+ rval.code, rval.consumed);
+ /* uper_decode() returns _bits_ */
+ rval.consumed += 7;
+ rval.consumed /= 8;
+ }
+ break;
+ case AS_DER:
+ case AS_CXER:
+ assert(!"DER or CXER not supported for load");
+ default:
+ assert(!"Unreachable");
+ }
+ fbuf_offset += rval.consumed;
+ fbuf_left -= rval.consumed;
+ if(rval.code == RC_WMORE)
+ fbuf_chunk += 1; /* Give little more */
+ else
+ fbuf_chunk = csize; /* Back off */
+ } while(fbuf_left && rval.code == RC_WMORE);
+
+ if(expectation != EXP_BROKEN) {
+ assert(rval.code == RC_OK);
+ if(how == AS_PER) {
+ fprintf(stderr, "[left %d, off %d, size %zd]\n",
+ fbuf_left, fbuf_offset, size);
+ assert(fbuf_offset == (ssize_t)size);
+ } else {
+ assert((fbuf_offset + 1 /* "\n" */ == (ssize_t)size
+ && fbuf[size - 1] == '\n')
+ || (fbuf_offset + 2 /* "\r\n" */ == (ssize_t)size
+ && fbuf[size - 2] == '\r'
+ && fbuf[size - 1] == '\n')
+ );
+ }
+ } else {
+ assert(rval.code != RC_OK);
+ fprintf(stderr, "Failed, but this was expected\n");
+ ASN_STRUCT_FREE(asn_DEF_PDU, st);
+ st = 0; /* ignore leak for now */
+ }
+ }
+
+ if(st) asn_fprint(stderr, &asn_DEF_PDU, st);
+ return st;
+}
+
+static int
+xer_encoding_equal(char *obuf, size_t osize, char *nbuf, size_t nsize) {
+ char *oend = obuf + osize;
+ char *nend = nbuf + nsize;
+
+ if((osize && !nsize) || (!osize && nsize))
+ return 0; /* not equal apriori */
+
+ while(1) {
+ while(obuf < oend && isspace(*obuf)) obuf++;
+ while(nbuf < nend && isspace(*nbuf)) nbuf++;
+
+ if(obuf == oend || nbuf == nend) {
+ if(obuf == oend && nbuf == nend)
+ break;
+ fprintf(stderr, "%s data in reconstructed encoding\n",
+ (obuf == oend) ? "More" : "Less");
+ return 0;
+ }
+
+ if(*obuf != *nbuf) {
+ printf("%c%c != %c%c\n",
+ obuf[0], obuf[1],
+ nbuf[0], nbuf[1]);
+ return 0;
+ }
+ obuf++, nbuf++;
+ }
+
+ return 1;
+}
+
+static void
+process_XER_data(const char *fname, enum expectation expectation, unsigned char *fbuf, size_t size) {
+ PDU_t *st;
+
+ st = load_object_from(fname, expectation, fbuf, size, AS_XER);
+ if(!st) return;
+
+ /* Save and re-load as PER */
+ save_object_as(st, expectation, AS_PER);
+ ASN_STRUCT_FREE(asn_DEF_PDU, st);
+ if(expectation == EXP_PER_NOCOMP)
+ return; /* Already checked */
+ st = load_object_from("buffer", expectation, buf, buf_offset, AS_PER);
+ assert(st);
+
+ save_object_as(st,
+ expectation,
+ (expectation == EXP_CXER_EXACT
+ || expectation == EXP_CXER_DIFF)
+ ? AS_CXER : AS_XER);
+ fprintf(stderr, "=== original ===\n");
+ fwrite(fbuf, 1, size, stderr);
+ fprintf(stderr, "=== re-encoded ===\n");
+ fwrite(buf, 1, buf_offset, stderr);
+ fprintf(stderr, "=== end ===\n");
+
+ switch(expectation) {
+ case EXP_DIFFERENT:
+ assert(!xer_encoding_equal((char *)fbuf, size, (char *)buf, buf_offset));
+ break;
+ case EXP_BROKEN:
+ assert(!xer_encoding_equal((char *)fbuf, size, (char *)buf, buf_offset));
+ break;
+ case EXP_CXER_EXACT:
+ buf[buf_offset++] = '\n';
+ assert(size == buf_offset);
+ assert(memcmp(fbuf, buf, size) == 0);
+ break;
+ case EXP_CXER_DIFF:
+ buf[buf_offset++] = '\n';
+ assert(size != buf_offset
+ || memcmp(fbuf, buf, size));
+ break;
+ case EXP_OK:
+ case EXP_PER_NOCOMP:
+ assert(xer_encoding_equal((char *)fbuf, size, (char *)buf, buf_offset));
+ break;
+ }
+
+ ASN_STRUCT_FREE(asn_DEF_PDU, st);
+}
+
+/*
+ * Decode the .der files and try to regenerate them.
+ */
+static int
+process(const char *fname) {
+ unsigned char fbuf[4096];
+ char *ext = strrchr(fname, '.');
+ enum expectation expectation;
+ int rd;
+ FILE *fp;
+
+ if(ext == 0 || strcmp(ext, ".in"))
+ return 0;
+
+ switch(ext[-1]) {
+ case 'B': /* The file is intentionally broken */
+ expectation = EXP_BROKEN; break;
+ case 'D': /* Reconstructing should yield different data */
+ expectation = EXP_DIFFERENT; break;
+ case 'E': /* Byte to byte exact reconstruction */
+ expectation = EXP_CXER_EXACT; break;
+ case 'X': /* Should fail byte-to-byte comparison */
+ expectation = EXP_CXER_DIFF; break;
+ case 'P': /* Incompatible with PER */
+ expectation = EXP_PER_NOCOMP; break;
+ default:
+ expectation = EXP_OK; break;
+ }
+
+ fprintf(stderr, "\nProcessing file [../%s]\n", fname);
+
+ snprintf((char *)fbuf, sizeof(fbuf), SRCDIR_S "/data-119/%s", fname);
+ fp = fopen((char *)fbuf, "r");
+ assert(fp);
+
+ rd = fread(fbuf, 1, sizeof(fbuf), fp);
+ fclose(fp);
+
+ assert(rd < (ssize_t)sizeof(fbuf)); /* expect small files */
+
+ process_XER_data(fname, expectation, fbuf, rd);
+
+ fprintf(stderr, "Finished [%s]\n", fname);
+
+ return 1;
+}
+
+int
+main() {
+ DIR *dir;
+ struct dirent *dent;
+ int processed_files = 0;
+ char *str;
+
+ /* Process a specific test file */
+ str = getenv("DATA_119_FILE");
+ if(str && strncmp(str, "data-119-", 9) == 0) {
+ process(str);
+ return 0;
+ }
+
+ dir = opendir(SRCDIR_S "/data-119");
+ assert(dir);
+
+ /*
+ * Process each file in that directory.
+ */
+ while((dent = readdir(dir))) {
+ if(strncmp(dent->d_name, "data-119-", 9) == 0)
+ if(process(dent->d_name))
+ processed_files++;
+ }
+
+ assert(processed_files);
+ closedir(dir);
+
+ return 0;
+}
+
Code Review / com / asn1c.git / blobdiff