manifest.cpp@ 72438

Last change on this file since 72438 was 69111, checked in by vboxsync, 7 years ago
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1	/* $Id: manifest.cpp 69111 2017-10-17 14:26:02Z vboxsync $ */
2	/** @file
3	* IPRT - Manifest file handling, old style - deprecated.
4	*/
5
6	/*
7	* Copyright (C) 2009-2017 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* The contents of this file may alternatively be used under the terms
18	* of the Common Development and Distribution License Version 1.0
19	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20	* VirtualBox OSE distribution, in which case the provisions of the
21	* CDDL are applicable instead of those of the GPL.
22	*
23	* You may elect to license modified versions of this file under the
24	* terms and conditions of either the GPL or the CDDL or both.
25	*/
26
27
28	/*********************************************************************************************************************************
29	* Header Files *
30	*********************************************************************************************************************************/
31	#include "internal/iprt.h"
32	#include <iprt/manifest.h>
33
34	#include <iprt/err.h>
35	#include <iprt/file.h>
36	#include <iprt/mem.h>
37	#include <iprt/path.h>
38	#include <iprt/sha.h>
39	#include <iprt/stream.h>
40	#include <iprt/string.h>
41
42
43	/*********************************************************************************************************************************
44	* Structures and Typedefs *
45	*********************************************************************************************************************************/
46	/**
47	* Internal per file structure used by RTManifestVerify
48	*/
49	typedef struct RTMANIFESTFILEENTRY
50	{
51	char *pszManifestFile;
52	char *pszManifestDigest;
53	PRTMANIFESTTEST pTestPattern;
54	} RTMANIFESTFILEENTRY;
55	typedef RTMANIFESTFILEENTRY* PRTMANIFESTFILEENTRY;
56
57	/**
58	* Internal structure used for the progress callback
59	*/
60	typedef struct RTMANIFESTCALLBACKDATA
61	{
62	PFNRTPROGRESS pfnProgressCallback;
63	void *pvUser;
64	size_t cMaxFiles;
65	size_t cCurrentFile;
66	} RTMANIFESTCALLBACKDATA;
67	typedef RTMANIFESTCALLBACKDATA* PRTMANIFESTCALLBACKDATA;
68
69
70	/*******************************************************************************
71	* Private functions
72	*******************************************************************************/
73
74	DECLINLINE(char ) rtManifestPosOfCharInBuf(char const pv, size_t cb, char c)
75	{
76	char pb = (char )pv;
77	for (; cb; --cb, ++pb)
78	if (RT_UNLIKELY(*pb == c))
79	return pb;
80	return NULL;
81	}
82
83	DECLINLINE(size_t) rtManifestIndexOfCharInBuf(char const *pv, size_t cb, char c)
84	{
85	char const pb = (char const )pv;
86	for (size_t i=0; i < cb; ++i, ++pb)
87	if (RT_UNLIKELY(*pb == c))
88	return i;
89	return cb;
90	}
91
92	static DECLCALLBACK(int) rtSHAProgressCallback(unsigned uPercent, void *pvUser)
93	{
94	PRTMANIFESTCALLBACKDATA pData = (PRTMANIFESTCALLBACKDATA)pvUser;
95	return pData->pfnProgressCallback((unsigned)( (uPercent + (float)pData->cCurrentFile * 100.0)
96	/ (float)pData->cMaxFiles),
97	pData->pvUser);
98	}
99
100
101	/*******************************************************************************
102	* Public functions
103	*******************************************************************************/
104
105	RTR3DECL(int) RTManifestVerify(const char pszManifestFile, PRTMANIFESTTEST paTests, size_t cTests, size_t piFailed)
106	{
107	/* Validate input */
108	AssertPtrReturn(pszManifestFile, VERR_INVALID_POINTER);
109
110	/* Open the manifest file */
111	RTFILE file;
112	int rc = RTFileOpen(&file, pszManifestFile, RTFILE_O_OPEN \| RTFILE_O_READ \| RTFILE_O_DENY_NONE);
113	if (RT_FAILURE(rc))
114	return rc;
115
116	void *pvBuf = 0;
117	do
118	{
119	uint64_t cbSize;
120	rc = RTFileGetSize(file, &cbSize);
121	if (RT_FAILURE(rc))
122	break;
123
124	/* Cast down for the case size_t < uint64_t. This isn't really correct,
125	but we consider manifest files bigger than size_t as not supported
126	by now. */
127	size_t cbToRead = (size_t)cbSize;
128	pvBuf = RTMemAlloc(cbToRead);
129	if (!pvBuf)
130	{
131	rc = VERR_NO_MEMORY;
132	break;
133	}
134
135	size_t cbRead = 0;
136	rc = RTFileRead(file, pvBuf, cbToRead, &cbRead);
137	if (RT_FAILURE(rc))
138	break;
139
140	rc = RTManifestVerifyFilesBuf(pvBuf, cbRead, paTests, cTests, piFailed);
141	}while (0);
142
143	/* Cleanup */
144	if (pvBuf)
145	RTMemFree(pvBuf);
146
147	RTFileClose(file);
148
149	return rc;
150	}
151
152	RTR3DECL(int) RTManifestVerifyFiles(const char pszManifestFile, const char const papszFiles, size_t cFiles, size_t piFailed,
153	PFNRTPROGRESS pfnProgressCallback, void *pvUser)
154	{
155	/* Validate input */
156	AssertPtrReturn(pszManifestFile, VERR_INVALID_POINTER);
157	AssertPtrReturn(papszFiles, VERR_INVALID_POINTER);
158	AssertPtrNullReturn(pfnProgressCallback, VERR_INVALID_POINTER);
159
160	int rc = VINF_SUCCESS;
161
162	/* Create our compare list */
163	PRTMANIFESTTEST paFiles = (PRTMANIFESTTEST)RTMemTmpAllocZ(sizeof(RTMANIFESTTEST) * cFiles);
164	if (!paFiles)
165	return VERR_NO_MEMORY;
166
167	RTMANIFESTCALLBACKDATA callback = { pfnProgressCallback, pvUser, cFiles, 0 };
168	/* Fill our compare list */
169	for (size_t i = 0; i < cFiles; ++i)
170	{
171	char *pszDigest;
172	if (pfnProgressCallback)
173	{
174	callback.cCurrentFile = i;
175	rc = RTSha1DigestFromFile(papszFiles[i], &pszDigest, rtSHAProgressCallback, &callback);
176	}
177	else
178	rc = RTSha1DigestFromFile(papszFiles[i], &pszDigest, NULL, NULL);
179	if (RT_FAILURE(rc))
180	break;
181	paFiles[i].pszTestFile = (char*)papszFiles[i];
182	paFiles[i].pszTestDigest = pszDigest;
183	}
184
185	/* Do the verification */
186	if (RT_SUCCESS(rc))
187	rc = RTManifestVerify(pszManifestFile, paFiles, cFiles, piFailed);
188
189	/* Cleanup */
190	for (size_t i = 0; i < cFiles; ++i)
191	{
192	if (paFiles[i].pszTestDigest)
193	RTStrFree((char*)paFiles[i].pszTestDigest);
194	}
195	RTMemTmpFree(paFiles);
196
197	return rc;
198	}
199
200	RTR3DECL(int) RTManifestWriteFiles(const char *pszManifestFile, RTDIGESTTYPE enmDigestType,
201	const char * const *papszFiles, size_t cFiles,
202	PFNRTPROGRESS pfnProgressCallback, void *pvUser)
203	{
204	/* Validate input */
205	AssertPtrReturn(pszManifestFile, VERR_INVALID_POINTER);
206	AssertPtrReturn(papszFiles, VERR_INVALID_POINTER);
207	AssertPtrNullReturn(pfnProgressCallback, VERR_INVALID_POINTER);
208
209	RTFILE file;
210	int rc = RTFileOpen(&file, pszManifestFile, RTFILE_O_CREATE \| RTFILE_O_WRITE \| RTFILE_O_DENY_ALL);
211	if (RT_FAILURE(rc))
212	return rc;
213
214	PRTMANIFESTTEST paFiles = 0;
215	void *pvBuf = 0;
216	do
217	{
218	paFiles = (PRTMANIFESTTEST)RTMemAllocZ(sizeof(RTMANIFESTTEST) * cFiles);
219	if (!paFiles)
220	{
221	rc = VERR_NO_MEMORY;
222	break;
223	}
224
225	RTMANIFESTCALLBACKDATA callback = { pfnProgressCallback, pvUser, cFiles, 0 };
226	for (size_t i = 0; i < cFiles; ++i)
227	{
228	paFiles[i].pszTestFile = papszFiles[i];
229	/* Calculate the SHA1 digest of every file */
230	if (pfnProgressCallback)
231	{
232	callback.cCurrentFile = i;
233	rc = RTSha1DigestFromFile(paFiles[i].pszTestFile, (char**)&paFiles[i].pszTestDigest, rtSHAProgressCallback, &callback);
234	}
235	else
236	rc = RTSha1DigestFromFile(paFiles[i].pszTestFile, (char**)&paFiles[i].pszTestDigest, NULL, NULL);
237	if (RT_FAILURE(rc))
238	break;
239	}
240
241	if (RT_SUCCESS(rc))
242	{
243	size_t cbSize = 0;
244	rc = RTManifestWriteFilesBuf(&pvBuf, &cbSize, enmDigestType, paFiles, cFiles);
245	if (RT_FAILURE(rc))
246	break;
247
248	rc = RTFileWrite(file, pvBuf, cbSize, 0);
249	}
250	}while (0);
251
252	RTFileClose(file);
253
254	/* Cleanup */
255	if (pvBuf)
256	RTMemFree(pvBuf);
257	if (paFiles)
258	{
259	for (size_t i = 0; i < cFiles; ++i)
260	if (paFiles[i].pszTestDigest)
261	RTStrFree((char*)paFiles[i].pszTestDigest);
262	RTMemFree(paFiles);
263	}
264
265	/* Delete the manifest file on failure */
266	if (RT_FAILURE(rc))
267	RTFileDelete(pszManifestFile);
268
269	return rc;
270	}
271
272
273	RTR3DECL(int) RTManifestVerifyDigestType(void const pvBuf, size_t cbSize, RTDIGESTTYPE penmDigestType)
274	{
275	/* Validate input */
276	AssertPtrReturn(pvBuf, VERR_INVALID_POINTER);
277	AssertReturn(cbSize > 0, VERR_INVALID_PARAMETER);
278	AssertPtrReturn(penmDigestType, VERR_INVALID_POINTER);
279
280	int rc = VINF_SUCCESS;
281
282	char const pcBuf = (char )pvBuf;
283	size_t cbRead = 0;
284	/* Parse the manifest file line by line */
285	for (;;)
286	{
287	if (cbRead >= cbSize)
288	return VERR_MANIFEST_UNSUPPORTED_DIGEST_TYPE;
289
290	size_t cch = rtManifestIndexOfCharInBuf(pcBuf, cbSize - cbRead, '\n') + 1;
291
292	/* Skip empty lines (UNIX/DOS format) */
293	if ( ( cch == 1
294	&& pcBuf[0] == '\n')
295	\|\| ( cch == 2
296	&& pcBuf[0] == '\r'
297	&& pcBuf[1] == '\n'))
298	{
299	pcBuf += cch;
300	cbRead += cch;
301	continue;
302	}
303
304	/** @todo r=bird: Missing space check here. */
305	/* Check for the digest algorithm */
306	if ( pcBuf[0] == 'S'
307	&& pcBuf[1] == 'H'
308	&& pcBuf[2] == 'A'
309	&& pcBuf[3] == '1')
310	{
311	*penmDigestType = RTDIGESTTYPE_SHA1;
312	break;
313	}
314	if ( pcBuf[0] == 'S'
315	&& pcBuf[1] == 'H'
316	&& pcBuf[2] == 'A'
317	&& pcBuf[3] == '2'
318	&& pcBuf[4] == '5'
319	&& pcBuf[5] == '6')
320	{
321	*penmDigestType = RTDIGESTTYPE_SHA256;
322	break;
323	}
324
325	pcBuf += cch;
326	cbRead += cch;
327	}
328
329	return rc;
330	}
331
332
333	RTR3DECL(int) RTManifestVerifyFilesBuf(void pvBuf, size_t cbSize, PRTMANIFESTTEST paTests, size_t cTests, size_t piFailed)
334	{
335	/* Validate input */
336	AssertPtrReturn(pvBuf, VERR_INVALID_POINTER);
337	AssertReturn(cbSize > 0, VERR_INVALID_PARAMETER);
338	AssertPtrReturn(paTests, VERR_INVALID_POINTER);
339	AssertReturn(cTests > 0, VERR_INVALID_PARAMETER);
340	AssertPtrNullReturn(piFailed, VERR_INVALID_POINTER);
341
342	int rc = VINF_SUCCESS;
343
344	PRTMANIFESTFILEENTRY paFiles = (PRTMANIFESTFILEENTRY)RTMemTmpAllocZ(sizeof(RTMANIFESTFILEENTRY) * cTests);
345	if (!paFiles)
346	return VERR_NO_MEMORY;
347
348	/* Fill our compare list */
349	for (size_t i = 0; i < cTests; ++i)
350	paFiles[i].pTestPattern = &paTests[i];
351
352	char pcBuf = (char)pvBuf;
353	size_t cbRead = 0;
354	/* Parse the manifest file line by line */
355	for (;;)
356	{
357	if (cbRead >= cbSize)
358	break;
359
360	size_t cch = rtManifestIndexOfCharInBuf(pcBuf, cbSize - cbRead, '\n') + 1;
361
362	/* Skip empty lines (UNIX/DOS format) */
363	if ( ( cch == 1
364	&& pcBuf[0] == '\n')
365	\|\| ( cch == 2
366	&& pcBuf[0] == '\r'
367	&& pcBuf[1] == '\n'))
368	{
369	pcBuf += cch;
370	cbRead += cch;
371	continue;
372	}
373
374	/** @todo r=bird:
375	* -# Better deal with this EOF line platform dependency
376	* -# The SHA1 and SHA256 tests should probably include a blank space check.
377	* -# If there is a specific order to the elements in the string, it would be
378	* good if the delimiter searching checked for it.
379	* -# Deal with filenames containing delimiter characters.
380	*/
381
382	/* Check for the digest algorithm */
383	if ( cch < 4
384	\|\| ( !( pcBuf[0] == 'S'
385	&& pcBuf[1] == 'H'
386	&& pcBuf[2] == 'A'
387	&& pcBuf[3] == '1')
388	&&
389	!( pcBuf[0] == 'S'
390	&& pcBuf[1] == 'H'
391	&& pcBuf[2] == 'A'
392	&& pcBuf[3] == '2'
393	&& pcBuf[4] == '5'
394	&& pcBuf[5] == '6')
395	)
396	)
397	{
398	/* Digest unsupported */
399	rc = VERR_MANIFEST_UNSUPPORTED_DIGEST_TYPE;
400	break;
401	}
402
403	/* Try to find the filename */
404	char *pszNameStart = rtManifestPosOfCharInBuf(pcBuf, cch, '(');
405	if (!pszNameStart)
406	{
407	rc = VERR_MANIFEST_WRONG_FILE_FORMAT;
408	break;
409	}
410	char *pszNameEnd = rtManifestPosOfCharInBuf(pcBuf, cch, ')');
411	if (!pszNameEnd)
412	{
413	rc = VERR_MANIFEST_WRONG_FILE_FORMAT;
414	break;
415	}
416
417	/* Copy the filename part */
418	size_t cchName = pszNameEnd - pszNameStart - 1;
419	char pszName = (char )RTMemTmpAlloc(cchName + 1);
420	if (!pszName)
421	{
422	rc = VERR_NO_MEMORY;
423	break;
424	}
425	memcpy(pszName, pszNameStart + 1, cchName);
426	pszName[cchName] = '\0';
427
428	/* Try to find the digest sum */
429	char *pszDigestStart = rtManifestPosOfCharInBuf(pcBuf, cch, '=') + 1;
430	if (!pszDigestStart)
431	{
432	RTMemTmpFree(pszName);
433	rc = VERR_MANIFEST_WRONG_FILE_FORMAT;
434	break;
435	}
436	char *pszDigestEnd = rtManifestPosOfCharInBuf(pcBuf, cch, '\r');
437	if (!pszDigestEnd)
438	pszDigestEnd = rtManifestPosOfCharInBuf(pcBuf, cch, '\n');
439	if (!pszDigestEnd)
440	{
441	RTMemTmpFree(pszName);
442	rc = VERR_MANIFEST_WRONG_FILE_FORMAT;
443	break;
444	}
445	/* Copy the digest part */
446	size_t cchDigest = pszDigestEnd - pszDigestStart - 1;
447	char pszDigest = (char )RTMemTmpAlloc(cchDigest + 1);
448	if (!pszDigest)
449	{
450	RTMemTmpFree(pszName);
451	rc = VERR_NO_MEMORY;
452	break;
453	}
454	memcpy(pszDigest, pszDigestStart + 1, cchDigest);
455	pszDigest[cchDigest] = '\0';
456
457	/* Check our file list against the extracted data */
458	bool fFound = false;
459	for (size_t i = 0; i < cTests; ++i)
460	{
461	/** @todo r=bird: Using RTStrStr here looks bogus. */
462	if (RTStrStr(paFiles[i].pTestPattern->pszTestFile, RTStrStrip(pszName)) != NULL)
463	{
464	/* Add the data of the manifest file to the file list */
465	paFiles[i].pszManifestFile = RTStrDup(RTStrStrip(pszName));
466	paFiles[i].pszManifestDigest = RTStrDup(RTStrStrip(pszDigest));
467	fFound = true;
468	break;
469	}
470	}
471	RTMemTmpFree(pszName);
472	RTMemTmpFree(pszDigest);
473	if (!fFound)
474	{
475	/* There have to be an entry in the file list */
476	rc = VERR_MANIFEST_FILE_MISMATCH;
477	break;
478	}
479
480	pcBuf += cch;
481	cbRead += cch;
482	}
483
484	if ( rc == VINF_SUCCESS
485	\|\| rc == VERR_EOF)
486	{
487	rc = VINF_SUCCESS;
488	for (size_t i = 0; i < cTests; ++i)
489	{
490	/* If there is an entry in the file list, which hasn't an
491	* equivalent in the manifest file, its an error. */
492	if ( !paFiles[i].pszManifestFile
493	\|\| !paFiles[i].pszManifestDigest)
494	{
495	rc = VERR_MANIFEST_FILE_MISMATCH;
496	break;
497	}
498
499	/* Do the manifest SHA digest match against the actual digest? */
500	if (RTStrICmp(paFiles[i].pszManifestDigest, paFiles[i].pTestPattern->pszTestDigest))
501	{
502	if (piFailed)
503	*piFailed = i;
504	rc = VERR_MANIFEST_DIGEST_MISMATCH;
505	break;
506	}
507	}
508	}
509
510	/* Cleanup */
511	for (size_t i = 0; i < cTests; ++i)
512	{
513	if (paFiles[i].pszManifestFile)
514	RTStrFree(paFiles[i].pszManifestFile);
515	if (paFiles[i].pszManifestDigest)
516	RTStrFree(paFiles[i].pszManifestDigest);
517	}
518	RTMemTmpFree(paFiles);
519
520	return rc;
521	}
522
523	RTR3DECL(int) RTManifestWriteFilesBuf(void *ppvBuf, size_t pcbSize, RTDIGESTTYPE enmDigestType, PRTMANIFESTTEST paFiles, size_t cFiles)
524	{
525	/* Validate input */
526	AssertPtrReturn(ppvBuf, VERR_INVALID_POINTER);
527	AssertPtrReturn(pcbSize, VERR_INVALID_POINTER);
528	AssertPtrReturn(paFiles, VERR_INVALID_POINTER);
529	AssertReturn(cFiles > 0, VERR_INVALID_PARAMETER);
530
531	const char *pcszDigestType;
532	switch (enmDigestType)
533	{
534	case RTDIGESTTYPE_CRC32: pcszDigestType = "CRC32"; break;
535	case RTDIGESTTYPE_CRC64: pcszDigestType = "CRC64"; break;
536	case RTDIGESTTYPE_MD5: pcszDigestType = "MD5"; break;
537	case RTDIGESTTYPE_SHA1: pcszDigestType = "SHA1"; break;
538	case RTDIGESTTYPE_SHA256: pcszDigestType = "SHA256"; break;
539	default: return VERR_INVALID_PARAMETER;
540	}
541
542	/* Calculate the size necessary for the memory buffer. */
543	size_t cbSize = 0;
544	size_t cbMaxSize = 0;
545	for (size_t i = 0; i < cFiles; ++i)
546	{
547	size_t cbTmp = strlen(RTPathFilename(paFiles[i].pszTestFile))
548	+ strlen(paFiles[i].pszTestDigest)
549	+ strlen(pcszDigestType)
550	+ 6;
551	cbMaxSize = RT_MAX(cbMaxSize, cbTmp);
552	cbSize += cbTmp;
553	}
554
555	/* Create the memory buffer */
556	void *pvBuf = RTMemAlloc(cbSize);
557	if (!pvBuf)
558	return VERR_NO_MEMORY;
559
560	/* Allocate a temporary string buffer. */
561	char *pszTmp = RTStrAlloc(cbMaxSize + 1);
562	if (!pszTmp)
563	{
564	RTMemFree(pvBuf);
565	return VERR_NO_MEMORY;
566	}
567	size_t cbPos = 0;
568
569	for (size_t i = 0; i < cFiles; ++i)
570	{
571	size_t cch = RTStrPrintf(pszTmp, cbMaxSize + 1, "%s (%s)= %s\n", pcszDigestType, RTPathFilename(paFiles[i].pszTestFile), paFiles[i].pszTestDigest);
572	memcpy(&((char*)pvBuf)[cbPos], pszTmp, cch);
573	cbPos += cch;
574	}
575	RTStrFree(pszTmp);
576
577	/* Results */
578	*ppvBuf = pvBuf;
579	*pcbSize = cbSize;
580
581	return VINF_SUCCESS;
582	}
583

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source: vbox/trunk/src/VBox/Runtime/common/checksum/manifest.cpp@ 72438

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