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uri utils: Add some helpers for HTTP timestamps
This commit is contained in:
Alexander Larsson
committed by
Alexander Larsson
Alexander Larsson
parent
1c9e65d5e4
commit
69f4543bc0
@@ -27,11 +27,12 @@
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/* This file is mainly a backport of GUri for older versions of glib, and some helpers around it */
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void flatpak_uri_encode_query_arg (GString *query,
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const char *key,
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const char *value);
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GHashTable * flatpak_parse_http_header_param_list (const char *header);
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void flatpak_uri_encode_query_arg (GString *query,
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const char *key,
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const char *value);
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GHashTable *flatpak_parse_http_header_param_list (const char *header);
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GDateTime * flatpak_parse_http_time (const char *date_string);
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char * flatpak_format_http_date (GDateTime *date);
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/* Same as SOUP_HTTP_URI_FLAGS, means all possible flags for http uris */
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#define FLATPAK_HTTP_URI_FLAGS (G_URI_FLAGS_HAS_PASSWORD | G_URI_FLAGS_ENCODED_PATH | G_URI_FLAGS_ENCODED_QUERY | G_URI_FLAGS_ENCODED_FRAGMENT | G_URI_FLAGS_SCHEME_NORMALIZE)
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@@ -1502,3 +1502,227 @@ flatpak_parse_http_header_param_list (const char *header)
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g_slist_free (list);
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return params;
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}
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/* Do not internationalize */
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static const char *const months[] = {
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"Jan", "Feb", "Mar", "Apr", "May", "Jun",
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"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
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};
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/* Do not internationalize */
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static const char *const days[] = {
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"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
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};
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char *
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flatpak_format_http_date (GDateTime *date)
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{
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g_autoptr(GDateTime) utcdate = g_date_time_to_utc (date);
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g_autofree char *date_format = NULL;
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/* "Sun, 06 Nov 1994 08:49:37 GMT" */
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date_format = g_strdup_printf ("%s, %%d %s %%Y %%T GMT",
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days[g_date_time_get_day_of_week (utcdate) - 1],
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months[g_date_time_get_month (utcdate) - 1]);
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return g_date_time_format (utcdate, (const char*)date_format);
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}
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static inline gboolean
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parse_day (int *day, const char **date_string)
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{
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char *end;
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*day = strtoul (*date_string, &end, 10);
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if (end == (char *)*date_string)
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return FALSE;
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while (*end == ' ' || *end == '-')
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end++;
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*date_string = end;
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return TRUE;
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}
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static inline gboolean
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parse_month (int *month, const char **date_string)
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{
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int i;
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for (i = 0; i < G_N_ELEMENTS (months); i++)
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{
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if (!g_ascii_strncasecmp (*date_string, months[i], 3))
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{
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*month = i + 1;
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*date_string += 3;
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while (**date_string == ' ' || **date_string == '-')
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(*date_string)++;
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return TRUE;
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}
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}
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return FALSE;
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}
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static inline gboolean
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parse_year (int *year, const char **date_string)
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{
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char *end;
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*year = strtoul (*date_string, &end, 10);
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if (end == (char *)*date_string)
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return FALSE;
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if (end == (char *)*date_string + 2) {
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if (*year < 70)
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*year += 2000;
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else
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*year += 1900;
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} else if (end == (char *)*date_string + 3)
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*year += 1900;
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while (*end == ' ' || *end == '-')
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end++;
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*date_string = end;
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return TRUE;
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}
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static inline gboolean
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parse_time (int *hour, int *minute, int *second, const char **date_string)
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{
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char *p, *end;
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*hour = strtoul (*date_string, &end, 10);
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if (end == (char *)*date_string || *end++ != ':')
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return FALSE;
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p = end;
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*minute = strtoul (p, &end, 10);
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if (end == p || *end++ != ':')
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return FALSE;
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p = end;
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*second = strtoul (p, &end, 10);
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if (end == p)
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return FALSE;
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p = end;
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while (*p == ' ')
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p++;
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*date_string = p;
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return TRUE;
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}
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static inline gboolean
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parse_timezone (GTimeZone **timezone_out, const char **date_string)
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{
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gint32 offset_minutes;
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gboolean utc;
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if (!**date_string)
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{
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utc = FALSE;
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offset_minutes = 0;
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}
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else if (**date_string == '+' || **date_string == '-')
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{
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gulong val;
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int sign = (**date_string == '+') ? 1 : -1;
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val = strtoul (*date_string + 1, (char **)date_string, 10);
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if (**date_string == ':')
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val = 60 * val + strtoul (*date_string + 1, (char **)date_string, 10);
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else
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val = 60 * (val / 100) + (val % 100);
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offset_minutes = sign * val;
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utc = (sign == -1) && !val;
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}
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else if (**date_string == 'Z')
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{
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offset_minutes = 0;
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utc = TRUE;
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(*date_string)++;
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}
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else if (!strcmp (*date_string, "GMT") ||
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!strcmp (*date_string, "UTC"))
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{
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offset_minutes = 0;
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utc = TRUE;
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(*date_string) += 3;
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}
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else if (strchr ("ECMP", **date_string) &&
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((*date_string)[1] == 'D' || (*date_string)[1] == 'S') &&
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(*date_string)[2] == 'T') {
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offset_minutes = -60 * (5 * strcspn ("ECMP", *date_string));
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if ((*date_string)[1] == 'D')
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offset_minutes += 60;
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utc = FALSE;
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}
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else
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return FALSE;
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if (utc)
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*timezone_out = g_time_zone_new_utc ();
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else
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*timezone_out = g_time_zone_new_offset (offset_minutes * 60);
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return TRUE;
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}
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GDateTime *
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flatpak_parse_http_time (const char *date_string)
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{
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int month, day, year, hour, minute, second;
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g_autoptr(GTimeZone) tz = NULL;
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g_return_val_if_fail (date_string != NULL, NULL);
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while (g_ascii_isspace (*date_string))
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date_string++;
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/* If it starts with a word, it must be a weekday, which we skip */
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if (g_ascii_isalpha (*date_string))
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{
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while (g_ascii_isalpha (*date_string))
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date_string++;
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if (*date_string == ',')
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date_string++;
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while (g_ascii_isspace (*date_string))
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date_string++;
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}
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/* If there's now another word, this must be an asctime-date */
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if (g_ascii_isalpha (*date_string))
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{
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/* (Sun) Nov 6 08:49:37 1994 */
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if (!parse_month (&month, &date_string) ||
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!parse_day (&day, &date_string) ||
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!parse_time (&hour, &minute, &second, &date_string) ||
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!parse_year (&year, &date_string))
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return NULL;
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/* There shouldn't be a timezone, but check anyway */
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parse_timezone (&tz, &date_string);
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}
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else
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{
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/* Non-asctime date, so some variation of
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* (Sun,) 06 Nov 1994 08:49:37 GMT
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*/
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if (!parse_day (&day, &date_string) ||
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!parse_month (&month, &date_string) ||
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!parse_year (&year, &date_string) ||
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!parse_time (&hour, &minute, &second, &date_string))
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return NULL;
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/* This time there *should* be a timezone, but we
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* survive if there isn't.
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*/
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parse_timezone (&tz, &date_string);
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}
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if (!tz)
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tz = g_time_zone_new_utc ();
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return g_date_time_new (tz, year, month, day, hour, minute, second);
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}
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