66 static int read_php_preamble(const unsigned char **tzf, timelib_tzinfo *tz)  in read_php_preamble()  argument
71 	version = (*tzf)[3] - '0';  in read_php_preamble()
72 	*tzf += 4;  in read_php_preamble()
75 	tz->bc = (**tzf == '\1');  in read_php_preamble()
76 	*tzf += 1;  in read_php_preamble()
79 	memcpy(tz->location.country_code, *tzf, 2);  in read_php_preamble()
81 	*tzf += 2;  in read_php_preamble()
84 	*tzf += 13;  in read_php_preamble()
89 static int read_tzif_preamble(const unsigned char **tzf, timelib_tzinfo *tz)  in read_tzif_preamble()  argument
94 	switch ((*tzf)[4]) {  in read_tzif_preamble()
107 	*tzf += 5;  in read_tzif_preamble()
116 	*tzf += 15;  in read_tzif_preamble()
121 static int read_preamble(const unsigned char **tzf, timelib_tzinfo *tz, unsigned int *type)  in read_preamble()  argument
124 	if (memcmp(*tzf, "PHP", 3) == 0) {  in read_preamble()
126 		return read_php_preamble(tzf, tz);  in read_preamble()
127 	} else if (memcmp(*tzf, "TZif", 4) == 0) {  in read_preamble()
129 		return read_tzif_preamble(tzf, tz);  in read_preamble()
135 static void read_header(const unsigned char **tzf, timelib_tzinfo *tz)  in read_header()  argument
139 	memcpy(&buffer, *tzf, sizeof(buffer));  in read_header()
146 	*tzf += sizeof(buffer);  in read_header()
149 static void skip_64bit_transitions(const unsigned char **tzf, timelib_tzinfo *tz)  in skip_64bit_transitions()  argument
152 		*tzf += (sizeof(int64_t) * tz->bit64.timecnt);  in skip_64bit_transitions()
153 		*tzf += (sizeof(unsigned char) * tz->bit64.timecnt);  in skip_64bit_transitions()
157 static int read_transitions(const unsigned char **tzf, timelib_tzinfo *tz)  in read_transitions()  argument
168 		memcpy(buffer, *tzf, sizeof(int32_t) * tz->bit32.timecnt);  in read_transitions()
169 		*tzf += (sizeof(int32_t) * tz->bit32.timecnt);  in read_transitions()
183 		memcpy(cbuffer, *tzf, sizeof(unsigned char) * tz->bit32.timecnt);  in read_transitions()
184 		*tzf += sizeof(unsigned char) * tz->bit32.timecnt;  in read_transitions()
193 static void skip_64bit_types(const unsigned char **tzf, timelib_tzinfo *tz)  in skip_64bit_types()  argument
195 	*tzf += sizeof(unsigned char) * 6 * tz->bit64.typecnt;  in skip_64bit_types()
196 	*tzf += sizeof(char) * tz->bit64.charcnt;  in skip_64bit_types()
198 		*tzf += sizeof(int64_t) * tz->bit64.leapcnt * 2;  in skip_64bit_types()
201 		*tzf += sizeof(unsigned char) * tz->bit64.ttisstdcnt;  in skip_64bit_types()
204 		*tzf += sizeof(unsigned char) * tz->bit64.ttisgmtcnt;  in skip_64bit_types()
208 static int read_types(const unsigned char **tzf, timelib_tzinfo *tz)  in read_types()  argument
218 	memcpy(buffer, *tzf, sizeof(unsigned char) * 6 * tz->bit32.typecnt);  in read_types()
219 	*tzf += sizeof(unsigned char) * 6 * tz->bit32.typecnt;  in read_types()
240 	memcpy(tz->timezone_abbr, *tzf, sizeof(char) * tz->bit32.charcnt);  in read_types()
241 	*tzf += sizeof(char) * tz->bit32.charcnt;  in read_types()
248 		memcpy(leap_buffer, *tzf, sizeof(int32_t) * tz->bit32.leapcnt * 2);  in read_types()
249 		*tzf += sizeof(int32_t) * tz->bit32.leapcnt * 2;  in read_types()
268 		memcpy(buffer, *tzf, sizeof(unsigned char) * tz->bit32.ttisstdcnt);  in read_types()
269 		*tzf += sizeof(unsigned char) * tz->bit32.ttisstdcnt;  in read_types()
282 		memcpy(buffer, *tzf, sizeof(unsigned char) * tz->bit32.ttisgmtcnt);  in read_types()
283 		*tzf += sizeof(unsigned char) * tz->bit32.ttisgmtcnt;  in read_types()
294 static void skip_posix_string(const unsigned char **tzf, timelib_tzinfo *tz)  in skip_posix_string()  argument
299 		if (*tzf[0] == '\n') {  in skip_posix_string()
302 		(*tzf)++;  in skip_posix_string()
306 static void read_location(const unsigned char **tzf, timelib_tzinfo *tz)  in read_location()  argument
311 	memcpy(&buffer, *tzf, sizeof(buffer));  in read_location()
317 	*tzf += sizeof(buffer);  in read_location()
320 	memcpy(tz->location.comments, *tzf, comments_len);  in read_location()
322 	*tzf += comments_len;  in read_location()
325 static void set_default_location_and_comments(const unsigned char **tzf, timelib_tzinfo *tz)  in set_default_location_and_comments()  argument
377 static int seek_to_tz_position(const unsigned char **tzf, char *timezone, const timelib_tzdb *tzdb)  in seek_to_tz_position()  argument
405 			(*tzf) = &(tzdb->data[tzdb->index[mid].pos]);  in seek_to_tz_position()
435 	const unsigned char *tzf;  in timelib_timezone_id_is_valid()  local
436 	return (seek_to_tz_position(&tzf, timezone, tzdb));  in timelib_timezone_id_is_valid()
439 static int skip_64bit_preamble(const unsigned char **tzf, timelib_tzinfo *tz)  in skip_64bit_preamble()  argument
441 	if (memcmp(*tzf, "TZif2", 5) == 0) {  in skip_64bit_preamble()
442 		*tzf += 20;  in skip_64bit_preamble()
444 	} else if (memcmp(*tzf, "TZif3", 5) == 0) {  in skip_64bit_preamble()
445 		*tzf += 20;  in skip_64bit_preamble()
452 static void read_64bit_header(const unsigned char **tzf, timelib_tzinfo *tz)  in read_64bit_header()  argument
456 	memcpy(&buffer, *tzf, sizeof(buffer));  in read_64bit_header()
463 	*tzf += sizeof(buffer);  in read_64bit_header()
477 	const unsigned char *tzf;  in timelib_parse_tzfile()  local
483 	if (seek_to_tz_position(&tzf, timezone, tzdb)) {  in timelib_parse_tzfile()
486 		version = read_preamble(&tzf, tmp, &type);  in timelib_parse_tzfile()
494 		read_header(&tzf, tmp);  in timelib_parse_tzfile()
495 		if ((transitions_result = read_transitions(&tzf, tmp)) != 0) {  in timelib_parse_tzfile()
501 		if ((types_result = read_types(&tzf, tmp)) != 0) {  in timelib_parse_tzfile()
507 			if (!skip_64bit_preamble(&tzf, tmp)) {  in timelib_parse_tzfile()
512 			read_64bit_header(&tzf, tmp);  in timelib_parse_tzfile()
513 			skip_64bit_transitions(&tzf, tmp);  in timelib_parse_tzfile()
514 			skip_64bit_types(&tzf, tmp);  in timelib_parse_tzfile()
515 			skip_posix_string(&tzf, tmp);  in timelib_parse_tzfile()
519 			read_location(&tzf, tmp);  in timelib_parse_tzfile()
521 			set_default_location_and_comments(&tzf, tmp);  in timelib_parse_tzfile()