- added re testing program, usefull for diagnosing buggy implementations

 of regexec (e.g. redhat 8 glibc 2.2.93)

test/re_test.c

@@ -0,0 +1,177 @@
+
+/* $Id$ */
+/*
+ *
+ * Copyright (C) 2001-2003 Fhg Fokus
+ *
+ * This file is part of ser, a free SIP server.
+ *
+ * ser is free software; you can redistribute 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
+ *
+ * For a license to use the ser software under conditions
+ * other than those described here, or to purchase support for this
+ * software, please contact iptel.org by e-mail at the following addresses:
+ *    [email protected]
+ *
+ * ser is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License 
+ * along with this program; if not, write to the Free Software 
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <unistd.h>
+#include <regex.h>
+
+
+static char *id="$Id$";
+static char *version="re_test 0.1";
+static char* help_msg="\
+Usage: re_test [-f file] regular_expression \n\
+Options:\n\
+    -f file       file with the content of a sip packet (max 65k)\n\
+    -h            this help message\n\
+    -n            non matching list ([^...]) will match newlines\n\
+    -s            case sensitive\n\
+    -v            increase verbosity\n\
+";
+
+#define BUF_SIZE 65535
+
+
+int main (int argc, char** argv)
+{
+	int fd;
+	char c;
+	int n;
+	char* re_str;
+	char buffer[BUF_SIZE+1]; /* space for null-term. */
+	char* buf;
+	regex_t re;
+	int flags;
+	regmatch_t pmatch;
+	int match;
+	
+	int verbose;
+	char *fname;
+	
+	/* init */
+	verbose=0;
+	fname=0;
+	re_str=0;
+	flags=REG_EXTENDED|REG_ICASE|REG_NEWLINE;
+	match=0;
+	buf=buffer;
+
+	opterr=0;
+	while ((c=getopt(argc,argv, "f:nsvhV"))!=-1){
+		switch(c){
+			case 'f':
+				fname=optarg;
+				break;
+			case 'v':
+				verbose++;
+				break;
+			case 'V':
+				printf("version: %s\n", version);
+				printf("%s\n",id);
+				exit(0);
+				break;
+			case 'h':
+				printf("version: %s\n", version);
+				printf("%s", help_msg);
+				exit(0);
+				break;
+			case 's':
+				flags&=~REG_ICASE;
+				break;
+			case 'n':
+				flags&=~REG_NEWLINE;
+				break;
+			case '?':
+				if (isprint(optopt))
+					fprintf(stderr, "Unknown option `-%c´\n", optopt);
+				else
+					fprintf(stderr, "Unknown character `\\x%x´\n", optopt);
+				goto error;
+			case ':':
+				fprintf(stderr, "Option `-%c´ requires an argument.\n",
+						optopt);
+				goto error;
+				break;
+			default:
+					abort();
+		}
+	}
+	/* check if we have non-options */
+	if (optind < argc){
+		re_str=argv[optind];
+	}
+	
+	/* check if all the required params are present */
+	if (re_str==0){
+		fprintf(stderr, "ERROR: no regular expression specified\n");
+		goto error;
+	}else{
+		if (regcomp(&re, re_str, flags)){
+			fprintf(stderr, "ERROR: bad regular expression <%s>\n", re_str);
+			goto error;
+		}
+	}
+		
+	if ((fname!=0 ) &&(strcmp(fname, "-")!=0)){
+		/* open packet file */
+		fd=open(fname, O_RDONLY);
+		if (fd<0){
+			fprintf(stderr, "ERROR: loading packet-file(%s): %s\n", fname,
+					strerror(errno));
+			goto error;
+		}
+	}else fd=0;
+	n=read(fd, buf, BUF_SIZE);
+	if (n<0){
+		fprintf(stderr, "ERROR: reading file(%s): %s\n", fname,
+				strerror(errno));
+		goto error;
+	}
+	buf[n]=0; /* null terminate it */
+	if (verbose) printf("read %d bytes from file %s\n", n, fname);
+	if (fd!=0) close(fd); /* we don't want to close stdin */
+	
+	while (regexec(&re, buf, 1, &pmatch, 0)==0){
+		match++;
+		if (pmatch.rm_so==-1){
+			fprintf(stderr, "ERROR: unknown match offset\n");
+			goto error;
+		}else{
+			if (verbose){
+				printf("%4d -%4d: ", pmatch.rm_so+buf-buffer,
+						pmatch.rm_eo+buf-buffer);
+			}
+			printf("%.*s\n", pmatch.rm_eo-pmatch.rm_so, buf+pmatch.rm_so);
+		}
+		buf+=pmatch.rm_eo;
+	}
+	if (verbose) printf("\n%d matches\n", match);
+	if (match) exit(0);
+	else exit(1);
+	
+error:
+	exit(-1);
+}

test/udp_flood.c

@@ -67,7 +67,7 @@ int main (int argc, char** argv)
 	char c;
 	int n,r;
 	char* tmp;
-	char* buf[BUF_SIZE];
+	char buf[BUF_SIZE];
 	struct hostent* he;
 	struct sockaddr_in addr;