Add memfetch, a cool util to dump the memory of a process. Good debug tool.

PR:		ports/74371
Submitted by:	Yonatan <onatan@gmail.com>

sysutils/Makefile

@@ -248,6 +248,7 @@
     SUBDIR += manck
     SUBDIR += mcron
     SUBDIR += memdump
+    SUBDIR += memfetch
     SUBDIR += memgrep
     SUBDIR += memtest
     SUBDIR += memtest86

sysutils/memfetch/Makefile

@@ -0,0 +1,36 @@
+# New ports collection makefile for:    memfetch
+# Date created:         		25 Nov 2004
+# Whom:					Yonatan <onatan@gmail.com>
+#
+# $FreeBSD$
+#
+
+PORTNAME=	memfetch
+PORTVERSION=	0.05b
+CATEGORIES=	sysutils
+MASTER_SITES=	http://lcamtuf.coredump.cx/soft/
+DISTNAME=	${PORTNAME}
+EXTRACT_SUFX=	.tgz
+
+MAINTAINER=	onatan@gmail.com
+COMMENT=	Utility to dump process memory
+
+WRKSRC=		${WRKDIR}/${PORTNAME}
+USE_PERL5_RUN=	yes
+
+USE_GETOPT_LONG=yes
+CFLAGS+=	${CPPFLAGS}
+MAKE_ENV+=	LDFLAGS="${LDFLAGS}"
+
+do-install:
+	${INSTALL_PROGRAM} ${WRKSRC}/${PORTNAME} ${PREFIX}/bin
+	${INSTALL_SCRIPT} ${WRKSRC}/mffind.pl ${PREFIX}/bin
+.if !defined(NOPORTDOCS)
+	${MKDIR} ${DOCSDIR}
+	${INSTALL_DATA} ${WRKSRC}/README ${DOCSDIR}
+.endif
+
+post-install:
+	@${CAT} ${PKGMESSAGE}
+
+.include <bsd.port.mk>

sysutils/memfetch/distinfo

@@ -0,0 +1,2 @@
+MD5 (memfetch.tgz) = cda6080b905436c11ec996e19c4a5563
+SIZE (memfetch.tgz) = 12435

sysutils/memfetch/files/patch-Makefile

@@ -0,0 +1,13 @@
+--- Makefile.orig	Thu Nov 25 15:30:12 2004
++++ Makefile	Thu Nov 25 15:31:32 2004
+@@ -7,8 +7,8 @@
+ #
+ 
+ FILE   = memfetch
+-CFLAGS = -Wall -O9
+-CC     = gcc
++CFLAGS?= -Wall -O9
++CC    ?= gcc
+ 
+ all: $(FILE)
+ 

sysutils/memfetch/files/patch-memfetch.c

@@ -0,0 +1,111 @@
+--- memfetch.c.orig	Mon Oct 20 20:04:45 2003
++++ memfetch.c	Thu Nov 25 15:51:00 2004
+@@ -20,6 +20,8 @@
+ #include <stdio.h>
+ #include <stdlib.h>
+ #include <unistd.h>
++#include <sys/uio.h>
++#include <sys/types.h>
+ #include <sys/ptrace.h>
+ #include <fcntl.h>
+ #include <string.h>
+@@ -27,7 +29,8 @@
+ #include <signal.h>
+ #include <time.h>
+ #include <sys/mman.h>
+-#include <asm/page.h>
++/* #include <asm/page.h> */
++#include <sys/param.h>
+ #include <getopt.h>
+ #include <errno.h>
+ 
+@@ -49,7 +52,7 @@
+        fprintf(outfile,"** Error message: " x); \
+        fclose(outfile); \
+      } \
+-     if (tracepid>0) ptrace(PTRACE_DETACH,tracepid,0,lastsig); \
++     if (tracepid>0) ptrace(PT_DETACH,tracepid,0,lastsig); \
+      exit(1); \
+    }
+ 
+@@ -74,6 +77,7 @@
+         "  -a      - skip non-anonymous maps (libraries etc)\n"
+         "  -w      - write index file to stdout instead of mfetch.lst\n"
+         "  -m      - avoid mmap(), helps prevent hanging on some 2.2 boxes\n"
++	"          - this is the only way to go on FreeBSD, for now.\n"
+         "  -S xxx  - dump segment containing address xxx (hex) only\n",myname);
+   exit(3);
+ }
+@@ -124,7 +128,7 @@
+   if (kill(tracepid,0)) 
+     fatal("Process does not exist or is not accessible.\n");
+ 
+-  if (ptrace(PTRACE_ATTACH,tracepid,0,0)) 
++  if (ptrace(PT_ATTACH,tracepid,0,0)) 
+     fatal("Cannot attach to this process (already traced?).\n");
+ 
+   if ( wait(&st)<=0 || !WIFSTOPPED(st) ) {
+@@ -149,7 +153,7 @@
+ 
+     while (1) {
+ 
+-      ptrace(PTRACE_CONT,tracepid,0,lastsig);
++      ptrace(PT_CONTINUE,tracepid,0,lastsig);
+       
+       if (wait(&st)<=0) {
+         debug("[-] Process gone before receiving a fault signal.\n");
+@@ -198,7 +202,7 @@
+ 
+ leavewait: // GOTOs for president!
+ 
+-  sprintf(tmp,"/proc/%d/maps",tracepid);
++  sprintf(tmp,"/proc/%d/map",tracepid);
+   mapfile=fopen(tmp,"r");
+ 
+   if (!mapfile) fatal("Cannot open %s for reading.\n",tmp); 
+@@ -237,8 +241,8 @@
+     int* writeptr;
+     char mapped=1;
+ 
+-    if (sscanf(tmp,"%x-%x",&st,&en)!=2) {
+-      debug("[!] Parse error in /proc/%d/maps (mockery?): %s",tracepid,tmp);
++    if (sscanf(tmp,"%x %x",&st,&en)!=2) {
++      debug("[!] Parse error in /proc/%d/map (mockery?): %s",tracepid,tmp);
+       continue;
+     }
+ 
+@@ -280,7 +284,7 @@
+             st,len);
+ 
+     if (avoid_mmap) writeptr=MAP_FAILED; else {      
+-      for (i=st;i<=en;i+=PAGE_SIZE) ptrace(PTRACE_PEEKDATA,tracepid,i,0);
++      for (i=st;i<=en;i+=PAGE_SIZE) ptrace(PT_READ_D,tracepid,(caddr_t)i,0);
+       writeptr=mmap(0,len,PROT_READ,MAP_PRIVATE,memfile,st);
+     }
+ 
+@@ -292,7 +296,7 @@
+       if (lseek(memfile,st,SEEK_SET)!=st || read(memfile,writeptr,len)!=len) {
+         debug("[S] ");
+         for (i=0;i<len/4;i++)
+-          writeptr[i]=ptrace(PTRACE_PEEKDATA,tracepid,st+i*4,0);
++          writeptr[i]=ptrace(PT_READ_D,tracepid,(caddr_t)st+i*4,0);
+       } else debug("[N] ");
+ 
+     }
+@@ -308,14 +312,14 @@
+ 
+   }
+ 
+-  if (!dumpcnt) fatal("No matching entries found in /proc/%d/maps.\n",tracepid);
++  if (!dumpcnt) fatal("No matching entries found in /proc/%d/map.\n",tracepid);
+ 
+   if (!textout) fprintf(outfile,"# End of file.\n");
+ 
+   debug("[*] Done (%d matching). Have a nice day.\n",dumpcnt);
+ 
+   fclose(outfile);
+-  ptrace(PTRACE_DETACH,tracepid,0,lastsig);
++  ptrace(PT_DETACH,tracepid,0,lastsig);
+ 
+   exit(0);
+ 

sysutils/memfetch/pkg-descr

@@ -0,0 +1,16 @@
+Memfetch is a very simple utility that can be used to dump process memory of 
+any userspace process running on the system without affecting its execution.
+Why bother? Well, quite often it is desirable to see what code and what data
+actually resides in memory under some pid (/proc entries are not always
+accurate). Debuggers like gdb are pretty good for examining small sections
+of code or memory, but are pretty much useless for massive comparison, 
+sophisticated searches and such. It's good to be able to retrieve full
+memory image to run it thru grep, strings, your favorite viewer or any other
+tool. Quite obviously, I developed this code not because it's extremely
+difficult to do it on your own, but because it is a valuable shell utility
+for all kinds of deep hacking activities that simply saves you time.
+
+Memfetch is a convenient screenshot grabber for ssh or screen sessions, by 
+the way ;-)
+
+WWW: http://lcamtuf.coredump.cx/

sysutils/memfetch/pkg-message

@@ -0,0 +1,5 @@
+
+Security Warning:
+This port requires that you mount procfs(5) filesystem in /proc.
+Please note that this can pose a security risk.
+

sysutils/memfetch/pkg-plist

@@ -0,0 +1,4 @@
+bin/memfetch
+bin/mffind.pl
+%%PORTDOCS%%%%DOCSDIR%%/README
+%%PORTDOCS%%@dirrm %%DOCSDIR%%