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Add new functions to convert iso time strings.
This commit is contained in:
Werner Koch
parent
cf8878cb18
commit
dfdda3b344
@ -1,3 +1,11 @@
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2011-02-27 Werner Koch <wk@g10code.com>
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* gettime.c (isotime2epoch): Factor check code out to ..
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(isotime_p): .. new.
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(isotime_human_p): New.
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(string2isotime): New.
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* t-gettime.c (test_string2isotime): New.
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2011-02-11 Andrey Jivsov <openpgp@brainhub.org>
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* openpgp-oid.c (openpgp_oid_to_str): Use unsigned int for
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163
common/gettime.c
163
common/gettime.c
@ -1,5 +1,5 @@
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/* gettime.c - Wrapper for time functions
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* Copyright (C) 1998, 2002, 2007 Free Software Foundation, Inc.
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* Copyright (C) 1998, 2002, 2007, 2011 Free Software Foundation, Inc.
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*
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* This file is part of GnuPG.
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*
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@ -179,29 +179,162 @@ scan_isodatestr( const char *string )
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return stamp;
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}
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/* Scan am ISO timestamp and return an Epoch based timestamp. The only
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int
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isotime_p (const char *string)
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{
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const char *s;
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int i;
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if (!*string)
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return 0;
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for (s=string, i=0; i < 8; i++, s++)
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if (!digitp (s))
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return 0;
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if (*s != 'T')
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return 0;
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for (s++, i=9; i < 15; i++, s++)
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if (!digitp (s))
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return 0;
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if ( !(!*s || (isascii (*s) && isspace(*s)) || *s == ':' || *s == ','))
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return 0; /* Wrong delimiter. */
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return 1;
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}
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/* Scan a string and return true if the string represents the human
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readable format of an ISO time. This format is:
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yyyy-mm-dd[ hh[:mm[:ss]]]
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Scanning stops at the second space or at a comma. */
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int
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isotime_human_p (const char *string)
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{
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const char *s;
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int i;
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if (!*string)
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return 0;
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for (s=string, i=0; i < 4; i++, s++)
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if (!digitp (s))
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return 0;
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if (*s != '-')
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return 0;
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s++;
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if (!digitp (s) || !digitp (s+1) || s[2] != '-')
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return 0;
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i = atoi_2 (s);
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if (i < 1 || i > 12)
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return 0;
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s += 3;
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if (!digitp (s) || !digitp (s+1))
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return 0;
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i = atoi_2 (s);
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if (i < 1 || i > 31)
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return 0;
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s += 2;
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if (!*s || *s == ',')
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return 1; /* Okay; only date given. */
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if (!spacep (s))
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return 0;
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s++;
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if (spacep (s))
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return 1; /* Okay, second space stops scanning. */
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if (!digitp (s) || !digitp (s+1))
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return 0;
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i = atoi_2 (s);
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if (i < 0 || i > 23)
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return 0;
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s += 2;
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if (!*s || *s == ',')
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return 1; /* Okay; only date and hour given. */
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if (*s != ':')
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return 0;
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s++;
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if (!digitp (s) || !digitp (s+1))
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return 0;
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i = atoi_2 (s);
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if (i < 0 || i > 59)
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return 0;
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s += 2;
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if (!*s || *s == ',')
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return 1; /* Okay; only date, hour and minute given. */
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if (*s != ':')
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return 0;
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s++;
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if (!digitp (s) || !digitp (s+1))
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return 0;
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i = atoi_2 (s);
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if (i < 0 || i > 60)
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return 0;
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s += 2;
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if (!*s || *s == ',' || spacep (s))
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return 1; /* Okay; date, hour and minute and second given. */
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return 0; /* Unexpected delimiter. */
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}
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/* Convert a standard isotime or a human readable variant into an
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isotime structure. The allowed formats are those described by
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isotime_p and isotime_human_p. The function returns 0 on failure
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or the length of the scanned string on success. */
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size_t
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string2isotime (gnupg_isotime_t atime, const char *string)
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{
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gnupg_isotime_t dummyatime;
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if (!atime)
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atime = dummyatime;
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atime[0] = 0;
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if (isotime_p (string))
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{
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memcpy (atime, string, 15);
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atime[15] = 0;
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return 15;
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}
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if (!isotime_human_p (string))
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return 0;
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atime[0] = string[0];
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atime[1] = string[1];
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atime[2] = string[2];
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atime[3] = string[3];
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atime[4] = string[5];
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atime[5] = string[6];
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atime[6] = string[8];
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atime[7] = string[9];
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atime[8] = 'T';
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memset (atime+9, '0', 6);
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atime[15] = 0;
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if (!spacep (string+10))
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return 10;
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if (spacep (string+11))
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return 11; /* As per def, second space stops scanning. */
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atime[9] = string[11];
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atime[10] = string[12];
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if (string[13] != ':')
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return 13;
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atime[11] = string[14];
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atime[12] = string[15];
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if (string[16] != ':')
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return 16;
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atime[13] = string[17];
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atime[14] = string[18];
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return 19;
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}
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/* Scan an ISO timestamp and return an Epoch based timestamp. The only
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supported format is "yyyymmddThhmmss" delimited by white space, nul, a
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colon or a comma. Returns (time_t)(-1) for an invalid string. */
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time_t
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isotime2epoch (const char *string)
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{
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const char *s;
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int year, month, day, hour, minu, sec;
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struct tm tmbuf;
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int i;
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if (!*string)
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if (!isotime_p (string))
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return (time_t)(-1);
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for (s=string, i=0; i < 8; i++, s++)
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if (!digitp (s))
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return (time_t)(-1);
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if (*s != 'T')
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return (time_t)(-1);
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for (s++, i=9; i < 15; i++, s++)
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if (!digitp (s))
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return (time_t)(-1);
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if ( !(!*s || (isascii (*s) && isspace(*s)) || *s == ':' || *s == ','))
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return (time_t)(-1); /* Wrong delimiter. */
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year = atoi_4 (string);
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month = atoi_2 (string + 4);
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@ -34,6 +34,9 @@ void gnupg_set_time (time_t newtime, int freeze);
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int gnupg_faked_time_p (void);
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u32 make_timestamp (void);
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u32 scan_isodatestr (const char *string);
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int isotime_p (const char *string);
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int isotime_human_p (const char *string);
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size_t string2isotime (gnupg_isotime_t atime, const char *string);
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time_t isotime2epoch (const char *string);
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void epoch2isotime (gnupg_isotime_t timebuf, time_t atime);
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u32 add_days_to_timestamp (u32 stamp, u16 days);
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@ -1,5 +1,5 @@
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/* t-gettime.c - Module test for gettime.c
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* Copyright (C) 2007 Free Software Foundation, Inc.
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* Copyright (C) 2007, 2011 Free Software Foundation, Inc.
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*
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* This file is part of GnuPG.
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*
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@ -89,6 +89,90 @@ test_isotime2epoch (void)
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static void
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test_string2isotime (void)
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{
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struct {
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const char *string;
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size_t result;
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const char *expected;
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} array [] = {
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{ "19700101T000001", 15, "19700101T000001" },
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{ "19700101T235959", 15, "19700101T235959" },
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{ "19980815T143712", 15, "19980815T143712" },
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{ "19700101T000000", 15, "19700101T000000" },
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{ "19691231T235959", 15, "19691231T235959" },
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{ "19000101T000000", 15, "19000101T000000" },
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{ "", 0, "" },
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{ "19000101T00000", 0, "" },
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{ "20010101t123456", 0, "" },
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{ "20010101T123456", 15, "20010101T123456" },
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{ "20070629T160000", 15, "20070629T160000" },
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{ "20070629T160000:", 15, "20070629T160000" },
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{ "20070629T160000,", 15, "20070629T160000" },
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{ "20070629T160000 ", 15, "20070629T160000" },
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{ "20070629T160000\n", 15,"20070629T160000" },
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{ "20070629T160000.", 0, "" },
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{ "1066-03-20", 10, "10660320T000000" },
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{ "1066-03-20,", 10, "10660320T000000" },
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{ "1066-03-20:", 0, "" },
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{ "1066-03-20 00", 13, "10660320T000000" },
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{ "1066-03-20 01", 13, "10660320T010000" },
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{ "1066-03-20 23", 13, "10660320T230000" },
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{ "1066-03-20 24", 0, "" },
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{ "1066-03-20 00:", 0, "" },
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{ "1066-03-20 00:3", 0, "" },
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{ "1066-03-20 00:31", 16, "10660320T003100" },
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{ "1066-03-20 00:31:47", 19, "10660320T003147" },
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{ "1066-03-20 00:31:47 ", 19, "10660320T003147" },
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{ "1066-03-20 00:31:47,", 19, "10660320T003147" },
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{ "1066-03-20 00:31:47:", 0, "" },
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{ "1-03-20 00:31:47:", 0, "" },
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{ "10-03-20 00:31:47:", 0, "" },
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{ "106-03-20 00:31:47:", 0, "" },
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{ "1066-23-20 00:31:47:", 0, "" },
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{ "1066-00-20 00:31:47:", 0, "" },
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{ "1066-0-20 00:31:47:", 0, "" },
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{ "1066-01-2 00:31:47:", 0, "" },
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{ "1066-01-2 00:31:47:", 0, "" },
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{ "1066-01-32 00:31:47:", 0, "" },
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{ "1066-01-00 00:31:47:", 0, "" },
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{ "1066-03-20 00:31:47:",11, "10660320T000000" },
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{ "1066-03-2000:31:47:", 0, "" },
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{ "10666-03-20 00:31:47:", 0, "" },
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{ NULL, 0 }
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};
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int idx;
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size_t result;
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gnupg_isotime_t tbuf;
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for (idx=0; array[idx].string; idx++)
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{
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result = string2isotime (tbuf, array[idx].string);
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if (result != array[idx].result)
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{
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fail (idx);
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if (verbose)
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fprintf (stderr, "string `%s' expected: %d, got: %d\n",
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array[idx].string, (int)array[idx].result, (int)result);
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}
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else if (result && strlen (tbuf) != 15)
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{
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fail (idx);
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if (verbose)
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fprintf (stderr, "string `%s' invalid isotime returned\n",
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array[idx].string);
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}
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else if (result && strcmp (array[idx].expected, tbuf))
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{
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fail (idx);
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if (verbose)
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fprintf (stderr, "string `%s' bad isotime '%s' returned\n",
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array[idx].string, tbuf);
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}
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}
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}
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int
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main (int argc, char **argv)
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@ -97,6 +181,7 @@ main (int argc, char **argv)
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verbose = 1;
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test_isotime2epoch ();
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test_string2isotime ();
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return !!errcount;
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}
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10
common/tlv.c
10
common/tlv.c
@ -238,14 +238,14 @@ _parse_ber_header (unsigned char const **buffer, size_t *size,
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is the pointer to the S-expression and BUFLEN is a pointer to the
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length of this S-expression (used to validate the syntax). Both
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are updated to reflect the new position. The token itself is
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returned as a pointer into the orginal buffer at TOK and TOKLEN.
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returned as a pointer into the original buffer at TOK and TOKLEN.
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If a parentheses is the next token, TOK will be set to NULL.
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TOKLEN is checked to be within the bounds. On error a error code
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is returned and all pointers should are not guaranteed to point to
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a meanigful value. DEPTH should be initialized to 0 and will
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TOKLEN is checked to be within the bounds. On error an error code
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is returned and no pointer is not guaranteed to point to
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a meaningful value. DEPTH should be initialized to 0 and will
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reflect on return the actual depth of the tree. To detect the end
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of the S-expression it is advisable to check DEPTH after a
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successful return:
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successful return.
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depth = 0;
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while (!(err = parse_sexp (&buf, &buflen, &depth, &tok, &toklen))
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10
common/tlv.h
10
common/tlv.h
@ -90,15 +90,15 @@ gpg_error_t _parse_ber_header (unsigned char const **buffer, size_t *size,
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GPG_ERR_SOURCE_DEFAULT)
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/* Return the next token of an canconical encoded S-expression. BUF
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/* Return the next token of an canonical encoded S-expression. BUF
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is the pointer to the S-expression and BUFLEN is a pointer to the
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length of this S-expression (used to validate the syntax). Both
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are updated to reflect the new position. The token itself is
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returned as a pointer into the orginal buffer at TOK and TOKLEN.
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returned as a pointer into the original buffer at TOK and TOKLEN.
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If a parentheses is the next token, TOK will be set to NULL.
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TOKLEN is checked to be within the bounds. On error a error code
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is returned and all pointers should are not guaranteed to point to
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a meanigful value. DEPTH should be initialized to 0 and will
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TOKLEN is checked to be within the bounds. On error an error code
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is returned and no pointer is not guaranteed to point to
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a meaningful value. DEPTH should be initialized to 0 and will
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reflect on return the actual depth of the tree. To detect the end
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of the S-expression it is advisable to check DEPTH after a
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successful return. */
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