+++ /dev/null
-#include "timeStr.h"
-#include <string.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <ctype.h>
-#include <security_utilities/threading.h> /* for Mutex */
-#include <utilLib/common.h>
-
-/*
- * Given a string containing either a UTC-style or "generalized time"
- * time string, convert to a struct tm (in GMT/UTC). Returns nonzero on
- * error.
- */
-int appTimeStringToTm(
- const char *str,
- unsigned len,
- struct tm *tmp)
-{
- char szTemp[5];
- unsigned isUtc;
- unsigned x;
- unsigned i;
- char *cp;
-
- if((str == NULL) || (len == 0) || (tmp == NULL)) {
- return 1;
- }
-
- /* tolerate NULL terminated or not */
- if(str[len - 1] == '\0') {
- len--;
- }
- switch(len) {
- case UTC_TIME_STRLEN: // 2-digit year, not Y2K compliant
- isUtc = 1;
- break;
- case GENERALIZED_TIME_STRLEN: // 4-digit year
- isUtc = 0;
- break;
- default: // unknown format
- return 1;
- }
-
- cp = (char *)str;
-
- /* check that all characters except last are digits */
- for(i=0; i<(len - 1); i++) {
- if ( !(isdigit(cp[i])) ) {
- return 1;
- }
- }
-
- /* check last character is a 'Z' */
- if(cp[len - 1] != 'Z' ) {
- return 1;
- }
-
- /* YEAR */
- szTemp[0] = *cp++;
- szTemp[1] = *cp++;
- if(!isUtc) {
- /* two more digits */
- szTemp[2] = *cp++;
- szTemp[3] = *cp++;
- szTemp[4] = '\0';
- }
- else {
- szTemp[2] = '\0';
- }
- x = atoi( szTemp );
- if(isUtc) {
- /*
- * 2-digit year.
- * 0 <= year < 50 : assume century 21
- * 50 <= year < 70 : illegal per PKIX
- * 70 < year <= 99 : assume century 20
- */
- if(x < 50) {
- x += 2000;
- }
- else if(x < 70) {
- return 1;
- }
- else {
- /* century 20 */
- x += 1900;
- }
- }
- /* by definition - tm_year is year - 1900 */
- tmp->tm_year = x - 1900;
-
- /* MONTH */
- szTemp[0] = *cp++;
- szTemp[1] = *cp++;
- szTemp[2] = '\0';
- x = atoi( szTemp );
- /* in the string, months are from 1 to 12 */
- if((x > 12) || (x <= 0)) {
- return 1;
- }
- /* in a tm, 0 to 11 */
- tmp->tm_mon = x - 1;
-
- /* DAY */
- szTemp[0] = *cp++;
- szTemp[1] = *cp++;
- szTemp[2] = '\0';
- x = atoi( szTemp );
- /* 1..31 in both formats */
- if((x > 31) || (x <= 0)) {
- return 1;
- }
- tmp->tm_mday = x;
-
- /* HOUR */
- szTemp[0] = *cp++;
- szTemp[1] = *cp++;
- szTemp[2] = '\0';
- x = atoi( szTemp );
- if((x > 23) || (x < 0)) {
- return 1;
- }
- tmp->tm_hour = x;
-
- /* MINUTE */
- szTemp[0] = *cp++;
- szTemp[1] = *cp++;
- szTemp[2] = '\0';
- x = atoi( szTemp );
- if((x > 59) || (x < 0)) {
- return 1;
- }
- tmp->tm_min = x;
-
- /* SECOND */
- szTemp[0] = *cp++;
- szTemp[1] = *cp++;
- szTemp[2] = '\0';
- x = atoi( szTemp );
- if((x > 59) || (x < 0)) {
- return 1;
- }
- tmp->tm_sec = x;
- return 0;
-}
-
-/* common time routine used by utcAtNowPlus and genTimeAtNowPlus */
-#define MAX_TIME_STR_LEN 30
-
-static Mutex timeMutex; // protects time(), gmtime()
-
-char *appTimeAtNowPlus(int secFromNow,
- timeSpec spec)
-{
- struct tm utc;
- char *outStr;
- time_t baseTime;
-
- timeMutex.lock();
- baseTime = time(NULL);
- baseTime += (time_t)secFromNow;
- utc = *gmtime(&baseTime);
- timeMutex.unlock();
-
- outStr = (char *)CSSM_MALLOC(MAX_TIME_STR_LEN);
-
- switch(spec) {
- case TIME_UTC:
- /* UTC - 2 year digits - code which parses this assumes that
- * (2-digit) years between 0 and 49 are in century 21 */
- if(utc.tm_year >= 100) {
- utc.tm_year -= 100;
- }
- sprintf(outStr, "%02d%02d%02d%02d%02d%02dZ",
- utc.tm_year /* + 1900 */, utc.tm_mon + 1,
- utc.tm_mday, utc.tm_hour, utc.tm_min, utc.tm_sec);
- break;
- case TIME_GEN:
- sprintf(outStr, "%04d%02d%02d%02d%02d%02dZ",
- /* note year is relative to 1900, hopefully it'll have four valid
- * digits! */
- utc.tm_year + 1900, utc.tm_mon + 1,
- utc.tm_mday, utc.tm_hour, utc.tm_min, utc.tm_sec);
- break;
- case TIME_CSSM:
- sprintf(outStr, "%04d%02d%02d%02d%02d%02d",
- /* note year is relative to 1900, hopefully it'll have
- * four valid digits! */
- utc.tm_year + 1900, utc.tm_mon + 1,
- utc.tm_mday, utc.tm_hour, utc.tm_min, utc.tm_sec);
- break;
- }
- return outStr;
-}
-
-/*
- * Malloc and return UTC (2-digit year) time string, for time with specified
- * offset from present. This uses the stdlib gmtime(), which is not thread safe.
- * Even though this function protects the call with a lock, the TP also uses
- * gmtime. It also does the correct locking for its own calls to gmtime()Êbut
- * the is no way to synchronize TP's calls to gmtime() with the calls to this
- * one other than only using this one when no threads might be performing TP ops.
- */
-char *utcAtNowPlus(int secFromNow)
-{
- return appTimeAtNowPlus(secFromNow, TIME_UTC);
-}
-
-/*
- * Same thing, generalized time (4-digit year).
- */
-char *genTimeAtNowPlus(int secFromNow)
-{
- return appTimeAtNowPlus(secFromNow, TIME_GEN);
-}
-
-/*
- * Free the string obtained from the above.
- */
-void freeTimeString(char *timeStr)
-{
- CSSM_FREE(timeStr);
-}
-
-/*
- * Convert a CSSM_X509_TIME, which can be in any of three forms (UTC,
- * generalized, or CSSM_TIMESTRING) into a CSSM_TIMESTRING. Caller
- * must free() the result. Returns NULL if x509time is badly formed.
- */
-char *x509TimeToCssmTimestring(
- const CSSM_X509_TIME *x509Time,
- unsigned *rtnLen) // for caller's convenience
-{
- int len = x509Time->time.Length;
- const char *inStr = (char *)x509Time->time.Data; // not NULL terminated!
- char *rtn;
-
- *rtnLen = 0;
- if((len == 0) || (inStr == NULL)) {
- return NULL;
- }
- rtn = (char *)malloc(CSSM_TIME_STRLEN + 1);
- rtn[0] = '\0';
- switch(len) {
- case UTC_TIME_STRLEN:
- {
- /* infer century and prepend to output */
- char tmp[3];
- int year;
- tmp[0] = inStr[0];
- tmp[1] = inStr[1];
- tmp[2] = '\0';
- year = atoi(tmp);
-
- /*
- * 0 <= year < 50 : assume century 21
- * 50 <= year < 70 : illegal per PKIX
- * 70 < year <= 99 : assume century 20
- */
- if(year < 50) {
- /* century 21 */
- strcpy(rtn, "20");
- }
- else if(year < 70) {
- free(rtn);
- return NULL;
- }
- else {
- /* century 20 */
- strcpy(rtn, "19");
- }
- memmove(rtn + 2, inStr, len - 1); // don't copy the Z
- break;
- }
- case CSSM_TIME_STRLEN:
- memmove(rtn, inStr, len); // trivial case
- break;
- case GENERALIZED_TIME_STRLEN:
- memmove(rtn, inStr, len - 1); // don't copy the Z
- break;
-
- default:
- free(rtn);
- return NULL;
- }
- rtn[CSSM_TIME_STRLEN] = '\0';
- *rtnLen = CSSM_TIME_STRLEN;
- return rtn;
-}
-
projects / apple / security.git / blobdiff