/src/nss/lib/util/dertime.c

Source (jump to first uncovered line)
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "prtypes.h"
#include "prtime.h"
#include "secder.h"
#include "prlong.h"
#include "secerr.h"

#define HIDIGIT(v) (((v) / 10) + '0')
#define LODIGIT(v) (((v) % 10) + '0')

#define ISDIGIT(dig) (((dig) >= '0') && ((dig) <= '9'))
#define CAPTURE(var, p, label)                        \
    {                                                 \
        if (!ISDIGIT((p)[0]) || !ISDIGIT((p)[1]))     \
            goto label;                               \
        (var) = ((p)[0] - '0') * 10 + ((p)[1] - '0'); \
        p += 2;                                       \
    }

static const PRTime January1st1 = PR_INT64(0xff23400100d44000);
static const PRTime January1st1950 = PR_INT64(0xfffdc1f8793da000);
static const PRTime January1st2050 = PR_INT64(0x0008f81e1b098000);
static const PRTime January1st10000 = PR_INT64(0x0384440ccc736000);

/* gmttime must contains UTC time in micro-seconds unit */
SECStatus
DER_TimeToUTCTimeArena(PLArenaPool *arenaOpt, SECItem *dst, PRTime gmttime)
{
    PRExplodedTime printableTime;
    unsigned char *d;

    if ((gmttime < January1st1950) || (gmttime >= January1st2050)) {
        PORT_SetError(SEC_ERROR_INVALID_ARGS);
        return SECFailure;
    }

    dst->len = 13;
    if (arenaOpt) {
        dst->data = d = (unsigned char *)PORT_ArenaAlloc(arenaOpt, dst->len);
    } else {
        dst->data = d = (unsigned char *)PORT_Alloc(dst->len);
    }
    dst->type = siUTCTime;
    if (!d) {
        return SECFailure;
    }

    /* Convert a PRTime to a printable format.  */
    PR_ExplodeTime(gmttime, PR_GMTParameters, &printableTime);

    /* The month in UTC time is base one */
    printableTime.tm_month++;

    /* remove the century since it's added to the tm_year by the
       PR_ExplodeTime routine, but is not needed for UTC time */
    printableTime.tm_year %= 100;

    d[0] = HIDIGIT(printableTime.tm_year);
    d[1] = LODIGIT(printableTime.tm_year);
    d[2] = HIDIGIT(printableTime.tm_month);
    d[3] = LODIGIT(printableTime.tm_month);
    d[4] = HIDIGIT(printableTime.tm_mday);
    d[5] = LODIGIT(printableTime.tm_mday);
    d[6] = HIDIGIT(printableTime.tm_hour);
    d[7] = LODIGIT(printableTime.tm_hour);
    d[8] = HIDIGIT(printableTime.tm_min);
    d[9] = LODIGIT(printableTime.tm_min);
    d[10] = HIDIGIT(printableTime.tm_sec);
    d[11] = LODIGIT(printableTime.tm_sec);
    d[12] = 'Z';
    return SECSuccess;
}

SECStatus
DER_TimeToUTCTime(SECItem *dst, PRTime gmttime)
{
    return DER_TimeToUTCTimeArena(NULL, dst, gmttime);
}

static SECStatus /* forward */
der_TimeStringToTime(PRTime *dst, const char *string, int generalized,
                     const char **endptr);

#define GEN_STRING 2 /* TimeString is a GeneralizedTime */
#define UTC_STRING 0 /* TimeString is a UTCTime         */

/* The caller of DER_AsciiToItem MUST ENSURE that either
** a) "string" points to a null-terminated ASCII string, or
** b) "string" points to a buffer containing a valid UTCTime,
**     whether null terminated or not, or
** c) "string" contains at least 19 characters, with or without null char.
** otherwise, this function may UMR and/or crash.
** It suffices to ensure that the input "string" is at least 17 bytes long.
*/
SECStatus
DER_AsciiToTime(PRTime *dst, const char *string)
{
    return der_TimeStringToTime(dst, string, UTC_STRING, NULL);
}

SECStatus
DER_UTCTimeToTime(PRTime *dst, const SECItem *time)
{
    /* Minimum valid UTCTime is yymmddhhmmZ       which is 11 bytes.
    ** Maximum valid UTCTime is yymmddhhmmss+0000 which is 17 bytes.
    ** 20 should be large enough for all valid encoded times.
    */
    unsigned int i;
    char localBuf[20];
    const char *end = NULL;
    SECStatus rv;

    if (!time || !time->data || time->len < 11 || time->len > 17) {
        PORT_SetError(SEC_ERROR_INVALID_TIME);
        return SECFailure;
    }

    for (i = 0; i < time->len; i++) {
        if (time->data[i] == '\0') {
            PORT_SetError(SEC_ERROR_INVALID_TIME);
            return SECFailure;
        }
        localBuf[i] = time->data[i];
    }
    localBuf[i] = '\0';

    rv = der_TimeStringToTime(dst, localBuf, UTC_STRING, &end);
    if (rv == SECSuccess && *end != '\0') {
        PORT_SetError(SEC_ERROR_INVALID_TIME);
        return SECFailure;
    }
    return rv;
}

/*
   gmttime must contains UTC time in micro-seconds unit.
   Note: the caller should make sure that Generalized time
   should only be used for certifiate validities after the
   year 2049.  Otherwise, UTC time should be used.  This routine
   does not check this case, since it can be used to encode
   certificate extension, which does not have this restriction.
 */
SECStatus
DER_TimeToGeneralizedTimeArena(PLArenaPool *arenaOpt, SECItem *dst, PRTime gmttime)
{
    PRExplodedTime printableTime;
    unsigned char *d;

    if ((gmttime < January1st1) || (gmttime >= January1st10000)) {
        PORT_SetError(SEC_ERROR_INVALID_ARGS);
        return SECFailure;
    }
    dst->len = 15;
    if (arenaOpt) {
        dst->data = d = (unsigned char *)PORT_ArenaAlloc(arenaOpt, dst->len);
    } else {
        dst->data = d = (unsigned char *)PORT_Alloc(dst->len);
    }
    dst->type = siGeneralizedTime;
    if (!d) {
        return SECFailure;
    }

    /* Convert a PRTime to a printable format.  */
    PR_ExplodeTime(gmttime, PR_GMTParameters, &printableTime);

    /* The month in Generalized time is base one */
    printableTime.tm_month++;

    d[0] = (printableTime.tm_year / 1000) + '0';
    d[1] = ((printableTime.tm_year % 1000) / 100) + '0';
    d[2] = ((printableTime.tm_year % 100) / 10) + '0';
    d[3] = (printableTime.tm_year % 10) + '0';
    d[4] = HIDIGIT(printableTime.tm_month);
    d[5] = LODIGIT(printableTime.tm_month);
    d[6] = HIDIGIT(printableTime.tm_mday);
    d[7] = LODIGIT(printableTime.tm_mday);
    d[8] = HIDIGIT(printableTime.tm_hour);
    d[9] = LODIGIT(printableTime.tm_hour);
    d[10] = HIDIGIT(printableTime.tm_min);
    d[11] = LODIGIT(printableTime.tm_min);
    d[12] = HIDIGIT(printableTime.tm_sec);
    d[13] = LODIGIT(printableTime.tm_sec);
    d[14] = 'Z';
    return SECSuccess;
}

SECStatus
DER_TimeToGeneralizedTime(SECItem *dst, PRTime gmttime)
{
    return DER_TimeToGeneralizedTimeArena(NULL, dst, gmttime);
}

SECStatus
DER_GeneralizedTimeToTime(PRTime *dst, const SECItem *time)
{
    /* Minimum valid GeneralizedTime is ccyymmddhhmmZ       which is 13 bytes.
    ** Maximum valid GeneralizedTime is ccyymmddhhmmss+0000 which is 19 bytes.
    ** 20 should be large enough for all valid encoded times.
    */
    unsigned int i;
    char localBuf[20];
    const char *end = NULL;
    SECStatus rv;

    if (!time || !time->data || time->len < 13 || time->len > 19) {
        PORT_SetError(SEC_ERROR_INVALID_TIME);
        return SECFailure;
    }

    for (i = 0; i < time->len; i++) {
        if (time->data[i] == '\0') {
            PORT_SetError(SEC_ERROR_INVALID_TIME);
            return SECFailure;
        }
        localBuf[i] = time->data[i];
    }
    localBuf[i] = '\0';

    rv = der_TimeStringToTime(dst, localBuf, GEN_STRING, &end);
    if (rv == SECSuccess && *end != '\0') {
        PORT_SetError(SEC_ERROR_INVALID_TIME);
        return SECFailure;
    }
    return rv;
}

static SECStatus
der_TimeStringToTime(PRTime *dst, const char *string, int generalized,
                     const char **endptr)
{
    PRExplodedTime genTime;
    long hourOff = 0, minOff = 0;
    PRUint16 century;
    char signum;

    if (string == NULL || dst == NULL) {
        PORT_SetError(SEC_ERROR_INVALID_ARGS);
        return SECFailure;
    }

    /* Verify time is formatted properly and capture information */
    memset(&genTime, 0, sizeof genTime);

    if (generalized == UTC_STRING) {
        CAPTURE(genTime.tm_year, string, loser);
        century = (genTime.tm_year < 50) ? 20 : 19;
    } else {
        CAPTURE(century, string, loser);
        CAPTURE(genTime.tm_year, string, loser);
    }
    genTime.tm_year += century * 100;

    CAPTURE(genTime.tm_month, string, loser);
    if ((genTime.tm_month == 0) || (genTime.tm_month > 12))
        goto loser;

    /* NSPR month base is 0 */
    --genTime.tm_month;

    CAPTURE(genTime.tm_mday, string, loser);
    if ((genTime.tm_mday == 0) || (genTime.tm_mday > 31))
        goto loser;

    CAPTURE(genTime.tm_hour, string, loser);
    if (genTime.tm_hour > 23)
        goto loser;

    CAPTURE(genTime.tm_min, string, loser);
    if (genTime.tm_min > 59)
        goto loser;

    if (ISDIGIT(string[0])) {
        CAPTURE(genTime.tm_sec, string, loser);
        if (genTime.tm_sec > 59)
            goto loser;
    }
    signum = *string++;
    if (signum == '+' || signum == '-') {
        CAPTURE(hourOff, string, loser);
        if (hourOff > 23)
            goto loser;
        CAPTURE(minOff, string, loser);
        if (minOff > 59)
            goto loser;
        if (signum == '-') {
            hourOff = -hourOff;
            minOff = -minOff;
        }
    } else if (signum != 'Z') {
        goto loser;
    }

    if (endptr)
        *endptr = string;

    /* Convert the GMT offset to seconds and save it in genTime
     * for the implode time call.
     */
    genTime.tm_params.tp_gmt_offset = (PRInt32)((hourOff * 60L + minOff) * 60L);
    *dst = PR_ImplodeTime(&genTime);
    return SECSuccess;

loser:
    PORT_SetError(SEC_ERROR_INVALID_TIME);
    return SECFailure;
}

Coverage Report

Created: 2024-05-20 06:23

Line	Count	Source (jump to first uncovered line)
1		/* This Source Code Form is subject to the terms of the Mozilla Public
2		* License, v. 2.0. If a copy of the MPL was not distributed with this
3		* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
4
5		#include "prtypes.h"
6		#include "prtime.h"
7		#include "secder.h"
8		#include "prlong.h"
9		#include "secerr.h"
10
11	0	#define HIDIGIT(v) (((v) / 10) + '0')
12	0	#define LODIGIT(v) (((v) % 10) + '0')
13
14	15.2k	#define ISDIGIT(dig) (((dig) >= '0') && ((dig) <= '9'))
15		#define CAPTURE(var, p, label) \
16	4.95k	{ \
17	4.95k	if (!ISDIGIT((p)[0]) \|\| !ISDIGIT((p)[1])) \
18	4.95k	goto label; \
19	4.95k	(var) = ((p)[0] - '0') * 10 + ((p)[1] - '0'); \
20	4.43k	p += 2; \
21	4.43k	}
22
23		static const PRTime January1st1 = PR_INT64(0xff23400100d44000);
24		static const PRTime January1st1950 = PR_INT64(0xfffdc1f8793da000);
25		static const PRTime January1st2050 = PR_INT64(0x0008f81e1b098000);
26		static const PRTime January1st10000 = PR_INT64(0x0384440ccc736000);
27
28		/* gmttime must contains UTC time in micro-seconds unit */
29		SECStatus
30		DER_TimeToUTCTimeArena(PLArenaPool arenaOpt, SECItem dst, PRTime gmttime)
31	0	{
32	0	PRExplodedTime printableTime;
33	0	unsigned char *d;
34
35	0	if ((gmttime < January1st1950) \|\| (gmttime >= January1st2050)) {
36	0	PORT_SetError(SEC_ERROR_INVALID_ARGS);
37	0	return SECFailure;
38	0	}
39
40	0	dst->len = 13;
41	0	if (arenaOpt) {
42	0	dst->data = d = (unsigned char *)PORT_ArenaAlloc(arenaOpt, dst->len);
43	0	} else {
44	0	dst->data = d = (unsigned char *)PORT_Alloc(dst->len);
45	0	}
46	0	dst->type = siUTCTime;
47	0	if (!d) {
48	0	return SECFailure;
49	0	}
50
51		/* Convert a PRTime to a printable format. */
52	0	PR_ExplodeTime(gmttime, PR_GMTParameters, &printableTime);
53
54		/* The month in UTC time is base one */
55	0	printableTime.tm_month++;
56
57		/* remove the century since it's added to the tm_year by the
58		PR_ExplodeTime routine, but is not needed for UTC time */
59	0	printableTime.tm_year %= 100;
60
61	0	d[0] = HIDIGIT(printableTime.tm_year);
62	0	d[1] = LODIGIT(printableTime.tm_year);
63	0	d[2] = HIDIGIT(printableTime.tm_month);
64	0	d[3] = LODIGIT(printableTime.tm_month);
65	0	d[4] = HIDIGIT(printableTime.tm_mday);
66	0	d[5] = LODIGIT(printableTime.tm_mday);
67	0	d[6] = HIDIGIT(printableTime.tm_hour);
68	0	d[7] = LODIGIT(printableTime.tm_hour);
69	0	d[8] = HIDIGIT(printableTime.tm_min);
70	0	d[9] = LODIGIT(printableTime.tm_min);
71	0	d[10] = HIDIGIT(printableTime.tm_sec);
72	0	d[11] = LODIGIT(printableTime.tm_sec);
73	0	d[12] = 'Z';
74	0	return SECSuccess;
75	0	}
76
77		SECStatus
78		DER_TimeToUTCTime(SECItem *dst, PRTime gmttime)
79	0	{
80	0	return DER_TimeToUTCTimeArena(NULL, dst, gmttime);
81	0	}
82
83		static SECStatus /* forward */
84		der_TimeStringToTime(PRTime dst, const char string, int generalized,
85		const char **endptr);
86
87	180	#define GEN_STRING 2 /* TimeString is a GeneralizedTime */
88	2.18k	#define UTC_STRING 0 /* TimeString is a UTCTime */
89
90		/* The caller of DER_AsciiToItem MUST ENSURE that either
91		** a) "string" points to a null-terminated ASCII string, or
92		** b) "string" points to a buffer containing a valid UTCTime,
93		** whether null terminated or not, or
94		** c) "string" contains at least 19 characters, with or without null char.
95		** otherwise, this function may UMR and/or crash.
96		** It suffices to ensure that the input "string" is at least 17 bytes long.
97		*/
98		SECStatus
99		DER_AsciiToTime(PRTime dst, const char string)
100	0	{
101	0	return der_TimeStringToTime(dst, string, UTC_STRING, NULL);
102	0	}
103
104		SECStatus
105		DER_UTCTimeToTime(PRTime dst, const SECItem time)
106	1.03k	{
107		/* Minimum valid UTCTime is yymmddhhmmZ which is 11 bytes.
108		** Maximum valid UTCTime is yymmddhhmmss+0000 which is 17 bytes.
109		** 20 should be large enough for all valid encoded times.
110		*/
111	1.03k	unsigned int i;
112	1.03k	char localBuf[20];
113	1.03k	const char *end = NULL;
114	1.03k	SECStatus rv;
115
116	1.03k	if (!time \|\| !time->data \|\| time->len < 11 \|\| time->len > 17) {
117	0	PORT_SetError(SEC_ERROR_INVALID_TIME);
118	0	return SECFailure;
119	0	}
120
121	14.2k	for (i = 0; i < time->len; i++) {
122	13.1k	if (time->data[i] == '\0') {
123	35	PORT_SetError(SEC_ERROR_INVALID_TIME);
124	35	return SECFailure;
125	35	}
126	13.1k	localBuf[i] = time->data[i];
127	13.1k	}
128	1.00k	localBuf[i] = '\0';
129
130	1.00k	rv = der_TimeStringToTime(dst, localBuf, UTC_STRING, &end);
131	1.00k	if (rv == SECSuccess && *end != '\0') {
132	3	PORT_SetError(SEC_ERROR_INVALID_TIME);
133	3	return SECFailure;
134	3	}
135	998	return rv;
136	1.00k	}
137
138		/*
139		gmttime must contains UTC time in micro-seconds unit.
140		Note: the caller should make sure that Generalized time
141		should only be used for certifiate validities after the
142		year 2049. Otherwise, UTC time should be used. This routine
143		does not check this case, since it can be used to encode
144		certificate extension, which does not have this restriction.
145		*/
146		SECStatus
147		DER_TimeToGeneralizedTimeArena(PLArenaPool arenaOpt, SECItem dst, PRTime gmttime)
148	0	{
149	0	PRExplodedTime printableTime;
150	0	unsigned char *d;
151
152	0	if ((gmttime < January1st1) \|\| (gmttime >= January1st10000)) {
153	0	PORT_SetError(SEC_ERROR_INVALID_ARGS);
154	0	return SECFailure;
155	0	}
156	0	dst->len = 15;
157	0	if (arenaOpt) {
158	0	dst->data = d = (unsigned char *)PORT_ArenaAlloc(arenaOpt, dst->len);
159	0	} else {
160	0	dst->data = d = (unsigned char *)PORT_Alloc(dst->len);
161	0	}
162	0	dst->type = siGeneralizedTime;
163	0	if (!d) {
164	0	return SECFailure;
165	0	}
166
167		/* Convert a PRTime to a printable format. */
168	0	PR_ExplodeTime(gmttime, PR_GMTParameters, &printableTime);
169
170		/* The month in Generalized time is base one */
171	0	printableTime.tm_month++;
172
173	0	d[0] = (printableTime.tm_year / 1000) + '0';
174	0	d[1] = ((printableTime.tm_year % 1000) / 100) + '0';
175	0	d[2] = ((printableTime.tm_year % 100) / 10) + '0';
176	0	d[3] = (printableTime.tm_year % 10) + '0';
177	0	d[4] = HIDIGIT(printableTime.tm_month);
178	0	d[5] = LODIGIT(printableTime.tm_month);
179	0	d[6] = HIDIGIT(printableTime.tm_mday);
180	0	d[7] = LODIGIT(printableTime.tm_mday);
181	0	d[8] = HIDIGIT(printableTime.tm_hour);
182	0	d[9] = LODIGIT(printableTime.tm_hour);
183	0	d[10] = HIDIGIT(printableTime.tm_min);
184	0	d[11] = LODIGIT(printableTime.tm_min);
185	0	d[12] = HIDIGIT(printableTime.tm_sec);
186	0	d[13] = LODIGIT(printableTime.tm_sec);
187	0	d[14] = 'Z';
188	0	return SECSuccess;
189	0	}
190
191		SECStatus
192		DER_TimeToGeneralizedTime(SECItem *dst, PRTime gmttime)
193	0	{
194	0	return DER_TimeToGeneralizedTimeArena(NULL, dst, gmttime);
195	0	}
196
197		SECStatus
198		DER_GeneralizedTimeToTime(PRTime dst, const SECItem time)
199	205	{
200		/* Minimum valid GeneralizedTime is ccyymmddhhmmZ which is 13 bytes.
201		** Maximum valid GeneralizedTime is ccyymmddhhmmss+0000 which is 19 bytes.
202		** 20 should be large enough for all valid encoded times.
203		*/
204	205	unsigned int i;
205	205	char localBuf[20];
206	205	const char *end = NULL;
207	205	SECStatus rv;
208
209	205	if (!time \|\| !time->data \|\| time->len < 13 \|\| time->len > 19) {
210	0	PORT_SetError(SEC_ERROR_INVALID_TIME);
211	0	return SECFailure;
212	0	}
213
214	2.67k	for (i = 0; i < time->len; i++) {
215	2.49k	if (time->data[i] == '\0') {
216	25	PORT_SetError(SEC_ERROR_INVALID_TIME);
217	25	return SECFailure;
218	25	}
219	2.47k	localBuf[i] = time->data[i];
220	2.47k	}
221	180	localBuf[i] = '\0';
222
223	180	rv = der_TimeStringToTime(dst, localBuf, GEN_STRING, &end);
224	180	if (rv == SECSuccess && *end != '\0') {
225	0	PORT_SetError(SEC_ERROR_INVALID_TIME);
226	0	return SECFailure;
227	0	}
228	180	return rv;
229	180	}
230
231		static SECStatus
232		der_TimeStringToTime(PRTime dst, const char string, int generalized,
233		const char **endptr)
234	1.18k	{
235	1.18k	PRExplodedTime genTime;
236	1.18k	long hourOff = 0, minOff = 0;
237	1.18k	PRUint16 century;
238	1.18k	char signum;
239
240	1.18k	if (string == NULL \|\| dst == NULL) {
241	0	PORT_SetError(SEC_ERROR_INVALID_ARGS);
242	0	return SECFailure;
243	0	}
244
245		/* Verify time is formatted properly and capture information */
246	1.18k	memset(&genTime, 0, sizeof genTime);
247
248	1.18k	if (generalized == UTC_STRING) {
249	1.00k	CAPTURE(genTime.tm_year, string, loser);
250	866	century = (genTime.tm_year < 50) ? 20 : 19;
251	866	} else {
252	180	CAPTURE(century, string, loser);
253	97	CAPTURE(genTime.tm_year, string, loser);
254	51	}
255	917	genTime.tm_year += century * 100;
256
257	917	CAPTURE(genTime.tm_month, string, loser);
258	847	if ((genTime.tm_month == 0) \|\| (genTime.tm_month > 12))
259	49	goto loser;
260
261		/* NSPR month base is 0 */
262	798	--genTime.tm_month;
263
264	798	CAPTURE(genTime.tm_mday, string, loser);
265	741	if ((genTime.tm_mday == 0) \|\| (genTime.tm_mday > 31))
266	22	goto loser;
267
268	1.40k	CAPTURE(genTime.tm_hour, string, loser);
269	1.40k	if (genTime.tm_hour > 23)
270	15	goto loser;
271
272	1.29k	CAPTURE(genTime.tm_min, string, loser);
273	1.29k	if (genTime.tm_min > 59)
274	9	goto loser;
275
276	620	if (ISDIGIT(string[0])) {
277	523	CAPTURE(genTime.tm_sec, string, loser);
278	507	if (genTime.tm_sec > 59)
279	12	goto loser;
280	507	}
281	592	signum = *string++;
282	592	if (signum == '+' \|\| signum == '-') {
283	49	CAPTURE(hourOff, string, loser);
284	11	if (hourOff > 23)
285	3	goto loser;
286	8	CAPTURE(minOff, string, loser);
287	8	if (minOff > 59)
288	0	goto loser;
289	0	if (signum == '-') {
290	0	hourOff = -hourOff;
291	0	minOff = -minOff;
292	0	}
293	543	} else if (signum != 'Z') {
294	22	goto loser;
295	22	}
296
297	521	if (endptr)
298	521	*endptr = string;
299
300		/* Convert the GMT offset to seconds and save it in genTime
301		* for the implode time call.
302		*/
303	521	genTime.tm_params.tp_gmt_offset = (PRInt32)((hourOff * 60L + minOff) * 60L);
304	521	*dst = PR_ImplodeTime(&genTime);
305	521	return SECSuccess;
306
307	660	loser:
308	660	PORT_SetError(SEC_ERROR_INVALID_TIME);
309	660	return SECFailure;
310	592	}