<arturo@directmail.org>"> &author-email;"> <arturo@directmail.org>"> free"> GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. "> ]> cole &this-release; Arturo Tena &author-email-address; 1999 &author-name-full; &license; cole is a free C OLE library. cole is distributed under the terms of the GNU General Public License (GPL) to give an impulse to the Free Software. Using cole, you can access Microsoft' `Structured Storage' files. The most popular Microsoft's programs generate `Structured Storage' files, incluiding the Microsoft' suite for offices. StarDivision' suite (StarOffice) generate `Structured Storage' files too. FlashPix file format is `Structured Storage' too. What is a `Structured Storage' file? Inside a `Structured Storage' file there is a filesystem, with directories and files, which Microsoft calls `containers' and `streams'. Using cole you can travel through that filesystem and read the files. cole doesn't know about internal structure of a stream, it only reads the raw data. You can use then the Microsoft's documentation available at http://msdn.microsoft.com or the information available at http://www.wotsit.org to read that structure. If you know anything in the side of StarDivision email me. FlashPix is well documented. cole was developed using the information available at http://wwwwbs.cs.tu-berlin.de/~schwartz/pmh/guide.html, and no information from any other source (incluiding Microsoft) has been used. You can get the most recent stable release of cole from the Filters Project home page or from Metalab (former SunSite) archive. A standard configure script is provided. You can read the instructions in the file INSTALL. A typical configuration/compilation/installation session is shown next. $ ls cole-&this-release;.tar.gz $ gzip -d cole-&this-release;.tar.gz $ tar -xf cole-&this-release;.tar $ ls cole-&this-release;.tar.gz cole-&this-release;/ $ cd cole-&this-release; $ ./configure --prefix=/usr/local ... Configured cole release &this-release; $ make ... $ make install ... $ make clean ... You can add the following flags to configure: --enable-cole-verbose. To make cole verbose everything. Usefull when debugging cole. --enable-osf-align-check. If you have errors while compiling under OSF1, enable this flag. Please, if you have some error with cole, send the cole's output when compiled using --enable-cole-verbose to the maintainer. For additional instructions, read the file INSTALL. If you have problems, you should read the Filters Project FAQ and later email to the maintainer. Only a static library is compiled by default. If you want compile a shared library too, you have to include the flag --enable-shared when running configure, and the program that dinamically links against cole shared library still needs to be under a license compatible with GPL. This is because cole is under GPL license, not LGPL license. cole has been successfully tested under (as reported by uname -mrsv or with the system information): Linux 2.0.36 #1 Wed Feb 17 19:45:41 EST 1999 i586 Linux 2.0.35 #1 Thu Jul 23 14:01:04 EDT 1998 i586 OSF1 V5.0 564 alpha OSF1 V4.0 564 alpha Solaris in Ultra Sparc (sparc-sun-solaris2.5.1) Arturo Tena <arturo@directmail.org> SunOS 5.6 Generic_105181-03 sun4u Matthew Evans <matthewe@its.caltech.edu> Windows NT 4.0 SP4 with Cygwin b20.1 with CoolView DLL Martin Scharpf <martin.scharpf@bbraun.com> If you have a different one, it will be useful to hear about you. Please, email to the maintainer. cole is used to access Microsoft OLE's &ss; and &cf;. Specifically, cole extracts the structures named streams from a &ssf;. Each stream is written to a new file. A dynamic tree in memory is created to store the name of the streams and the name of the files where they are written, besides other information. cole doesn't know the structure of each stream, it only extract them to new files. If you want to know the structure of a particular stream, you can read the Microsoft's documentation, or seach in Wotsit. Using that documentation, you can read the extracted streams searching for the actual information. cole has two major functions: OLEdecode and OLEcode. The first takes an &ssf; and divide it into streams. The last takes streams and generate an &ssf; (the stream_list structure and the streams itself must be valid, but cole doesn't provide functions to validate them by now). #include <cole/cole.h> int OLEdecode char *OLEfilename pps_entry **stream_list U32 *root U16 max_level This function extracts the streams of the file wich name is OLEfilename and generate a array of pps_entry's named stream_list. The array make a tree (ie. each pps_entry have fields such as next for brothers and dir for children pps_entry's) with root pps_entry root, and this tree stores the stream's names, the names of the temporal files where the streams were written and other information. Only streams with level minor than or equal to max_level are extracted, but all streams are extracted if max_level is zero. OLEdecode returns one of the following numbers: 0. Sucess. 4. Couldn't open OLEfilename file (can use perror(3)). 8. OLEfilename file seems to be a plain text file, not a &ssf;. 9. OLEfilename is a binary file, but it's not a &ssf;. 5. Error reading from file, means OLEfilename file has a faulty &ss; format. 6. Error removing temporal files. 7. Error creating temporal files. 10. Error allocating memory, there's no more memory. #include <stdio.h> #include <cole/cole.h> struct pps_block { char name[0x20]; /* name of the stream */ U8 type; /* type of this pps: 5 == root of stream_list, 1 == dir, 2 == stream */ char filename[L_tmpnam]; /* temporal file name where the stream were written, valid only if type == 2 */ U32 size; /* the size of the temporal file, valid only if type == 2 */ U32 next; /* next pps_entry in this directory, brother pps */ U32 dir; /* pps_entry children, valid only if type != 2 */ U16 level; /* level of the pps in the tree */ U32 seconds1; /* time creation */ U32 seconds2; /* time creation */ U32 days1; /* date creation */ U32 days2; /* date creation */ /* ... */ }; typedef struct pps_block pps_entry; pps_entry structure describes one extrated stream. #include <cole/cole.h> int OLEcode const char *OLEfilename int trunc pps_entry *stream_list U32 root This function takes the stream_list tree (which have a root pps_entry root and describes some existing valid streams) and generate a &ssf; named OLEfilename. If trunc is zero and OLEfilename exists, returns 2 (see below), in any other case OLEfilename will be created or recreated as needed. OLEcode returns one of the following numbers: 0. All goes OK. 1. Error writting in OLEfilename (can use perror(3)). 2. trunc is zero and OLEfilename exist. 3. Can't create OLEfilename (can use perror(3)). 10. Error allocating memory, there's no more memory. 11. Error reading stream's temporal files. 12. Error reading stream_list, it's broken. #include <cole/cole.h> int freeOLEtree pps_entry *stream_list You must call this function at the end of processing the streams, to free memory and remove the stream files. #include <cole/cole.h> void verbosePPSTree pps_entry *stream_list U32 root int level You can use this function to display the tree of a &ssf;. You need link your program against libcole.a. This means is ok: $ cc yourprogram.o libcole.a -o yourprogram If you use threads, take in count that cole is not reentrant safe (cole 2.0.0 will be reentrant safe). The following example is similar to the included file demo.c. It opens, display the tree and closes a &ssf;: #include <stdio.h> #include <cole/cole.h> You need to include cole/cole.h header to use the cole functions. int main (int argc, char **argv) { int result; pps_entry *stream_tree; U32 root_stream; U32 stream; if (argc != 3) { fprintf (stderr, "cole example 1. cole is a free C OLE library.\n"); fprintf (stderr, "Usage: coleexample1 srcFILE destFILE.\n"); fprintf (stderr, "Note: if srcFILE and destFILE are the same file, it will be overwritten.\n"); return 1; } Just argument checks. verbose ("Decoding ************************************"); result = OLEdecode (argv[1], &stream_tree, &root_stream, 0); Here we call OLEdecode in order to extract the structure of the &ssf; which name is stored in argv[1]. The structure will be stored in stream_tree, and the root of the structure in root_stream (we will need the root later). The last argument indicate the level of the structure that OLEdecode will extract, if it's zero it will extract all the levels. fprintf (stderr, "OLEdecode output = %d\n", result); if (result != 0) { fprintf (stderr, "Decoding: "); perror (argv[1]); return 1; } else verbose ("Success decoding"); printf ("******* Stream tree:\n"); verbosePPSTree (stream_tree, root_stream, 0); verbosePPSTree is a cole function that prints to the standard output the complete tree of a &ssf;. With the last parameter equal to zero, we are printing all levels of the structure. printf ("******* Top level no directory streams:\n"); /* travel through the top level no directory streams, just follows next field and ignore type 1 fileds */ for (stream = stream_tree[root_stream].dir; stream != 0xffffffff; stream = stream_tree[stream].next) { if (stream_tree[stream].type != 1 && stream_tree[stream].level == 1) if (!isprint(stream_tree[stream].name[0])) printf ("'\\x%02x%s'\n", stream_tree[stream].name[0], stream_tree[stream].name+1); else printf ("'%s'\n", stream_tree[stream].name); } With this code, we are traveling in the structure, which is a tree in an array, this means it's a tree of structures with indexes for the brothers and the children (if any). As you can see, the actual names of the streams may begin with no printable characters. verbose ("Coding **************************************"); result = OLEcode (argv[2], 1, stream_tree, root_stream); If you want to read the raw streams you only need OLEdecode function. But if you want to generate a &ssf;, you need to have the raw streams, the tree in an array structure and the root of such tree to use OLEcode. cole &this-release; doesn't provide functions to such tasks, wait for cole 2.0.0. fprintf (stderr, "OLEcode output = %d\n", result); if (result != 0) { fprintf (stderr, "Coding "); perror (argv[2]); return 1; } else verbose ("Success coding\n"); verbose ("Freeing *************************************"); /* need to free all the allocated memory */ result = freeOLEtree (stream_tree); If you used OLEdecode, you must use freeOLEtree after process the raw stream. fprintf (stderr, "freeOLEtree output = %d\n", result); return result; } When you run this example, the following output is produced: $ ./coleexample1 examples/text.doc text2.doc OLEdecode output = 0 ******* Stream tree: DIR 00 'Root Entry' FILE 01 98 ' CompObj' FILE 03 312 ' SummaryInformation' FILE 04 2381 'WordDocument' FILE 02 20 ' Ole' ******* Top level no directory streams: '\x01CompObj' '\x05SummaryInformation' 'WordDocument' '\x01Ole' OLEcode output = 0 freeOLEtree output = 0 The next example opens a file, and guess what version of Microsoft Excel generated the file. #include <stdio.h> #include <string.h> #include <cole/cole.h> int main (int argc, char **argv) { pps_entry *stream_tree; U32 root_stream; U32 stream; FILE * f; unsigned char buff[6]; if (argc != 2) { fprintf (stderr, "cole example 2. cole is a free C OLE library.\n"); fprintf (stderr, "Usage: coleexample2 FILE.\n"); return 1; } if (OLEdecode (argv[1], &stream_tree, &root_stream, 0)) { printf ("File is not a Microsoft Excel one.\n"); return 1; } for (stream = stream_tree[root_stream].dir; stream != 0xffffffff; stream = stream_tree[stream].next) { if (stream_tree[stream].type != 1 && stream_tree[stream].level == 1) if (!strcmp(stream_tree[stream].name, "Workbook") || !strcmp(stream_tree[stream].name, "Book")) { /* Book stream found */ f = fopen (stream_tree[stream].filename, "rb"); if (f == NULL) { perror ("Error opening temporal file"); freeOLEtree (stream_tree); return 1; } if (fread (buff, 1, 6, f) != 6) { perror ("Error reading temporal file"); fclose (f); freeOLEtree (stream_tree); return 1; } /* the next is from the internal structure of a Excel stream */ if (buff[0] != 0x09 || buff[1] != 0x08) { printf ("File is not a Microsoft Excel one.\n"); fclose (f); freeOLEtree (stream_tree); return 1; } if (buff[4] != 0x00 || (buff[5] != 0x05 && buff[5] != 0x06)) { printf ("File is from an unknown Microsoft Excel version.\n"); fclose (f); freeOLEtree (stream_tree); return 1; } if (buff[5] == 0x05) printf ("File is from Microsoft Excel version 5 or 7.\n"); else printf ("File is from Microsoft Excel version 8.\n"); fclose (f); freeOLEtree (stream_tree); return 0; } } printf ("File is not a Microsoft Excel one.\n"); freeOLEtree (stream_tree); return 0; } When you run this example, the following output is produced: $ coleexample2 examples/sprsheet.xls File is from Microsoft Excel version 5 or 7. $ coleexample2 examples/text.doc File is not a Microsoft Excel one. $ coleexample2 README File is not a Microsoft Excel one. The current cole's maintainer is &maintainer-name-full; &maintainer-email-ulink;. An example is better that an explanation. Here we will patch to upgrade from 0.1.0 release to 1.0.0 release. $ ls cole-0.1.0/ cole-0.1.0-1.0.0.diff $ cd cole-0.1.0 $ patch -Np1 < ../cole-0.1.0-1.0.0.diff $ cd .. $ mv cole-0.1.0 cole-1.0.0 $ ls cole-1.0.0/ cole-0.1.0-1.0.0.diff If you fix or add some code, we will very glad if you send the patch to the maintainer. The right way to make a patch is to have two directories: the original (here cole-1.0.0) and another when your changes have been made (here cole-1.0.0-myfix). $ ls cole-1.0.0/ cole-1.0.0-myfix/ $ LC_ALL=C TZ=UTC0 diff -Naur cole-1.0.0 cole-1.0.0-myfix > cole-1.0.0-patch $ ls cole-1.0.0/ cole-1.0.0-my-fix/ cole-1.0.0-patch You can then send cole-1.0.0-patch to the maintainer explaining what did you fix or what did you add. cole homepage. OLE-Storage. (formely LAOLA). Authors: see the file AUTHORS. 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It is safest to attach them to the start of each source file to most effectively convey the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found. one line to give the program's name and a brief idea of what it does. Copyright (C) year name of author This program 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. This program 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 Also add information on how to contact you by electronic and paper mail. If the program is interactive, make it output a short notice like this when it starts in an interactive mode: Gnomovision version 69, Copyright (C) year name of author Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, the commands you use may be called something other than `show w' and `show c'; they could even be mouse-clicks or menu items--whatever suits your program. You should also get your employer (if you work as a programmer) or your school, if any, to sign a "copyright disclaimer" for the program, if necessary. Here is a sample; alter the names: Yoyodyne, Inc., hereby disclaims all copyright interest in the program `Gnomovision' (which makes passes at compilers) written by James Hacker. signature of Ty Coon, 1 April 1989 Ty Coon, President of Vice This General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Library General Public License instead of this License. "Microsoft Word", "Microsoft Excel", "Microsoft Publisher" and "Microsoft Power Point" are trademarks of Microsoft Corporation. "Free Software" is not trademark of anyone, but it's an important term in the Free Software community, and for the Free Software Foundation. All other trademarks are the property of their respective owners. If there is a trademark here that needs to be listed formally above, please email to the &maintainer-email-ulink; so it can be added. &license; This document is provided as is without any express or implied warranties. While every effort has been taken to ensure the accuracy of the information contained in this document, the author/maintainer/contributors assume(s) no responsibility for errors or omissions, or for damages resulting from the use of the information contained herein.