Traffic Server URL percent encoding API.
TSUrlPercentEncode(TSMBuffer bufp, TSMLoc offset, char * dst, size_t dst_size, size_t * length, const unsigned char * map)¶
TSStringPercentEncode(const char * str, int str_len, char * dst, size_t dst_size, size_t * length, const unsigned char * map)¶
The URL data structure is a parsed version of a standard internet URL. The Traffic Server URL API provides access to URL data stored in marshal buffers. The URL functions can create, copy, retrieve or delete entire URLs, and retrieve or modify parts of URLs, such as their host, port or scheme information.
TSUrlPercentEncode() performs percent-encoding of the URL object,
storing the new string in the dst buffer. The length parameter
will be set to the new (encoded) string length, or
0 if the encoding
TSStringPercentEncode() is similar but operates on a string. If
the optional map parameter is provided (not
NULL) , it should
be a map of characters to encode.
TSStringPercentDecode() perform percent-decoding of the string in the str buffer,
writing to the dst buffer. The source and destination can be the same, in which case the
decoded string is written on top of the source string. The decoded string is guaranteed to be
no longer than the source string, but will include a terminating null which, if there are no
escapes, makes the destination one longer than the source. In practice this means the destination
length needs to be bumped up by one to account for the null, and a string can’t be decoded in place
if it’s not already null terminated with the length of the destination including the null, but the
length of the source not including the null. E.g.
static char const ORIGINAL = "A string without escapes, but null terminated"; char * source = TSstrdup(ORIGINAL); // make it writeable. size_t length; // return value. // sizeof(ORIGINAL) includes the null, so don't include that in the input. static const size_t N_CHARS = sizeof(ORIGINAL) - 1; TSReturnCode result = TSUrlPercentDecode(source, N_CHARS, source, N_CHARS + 1, &length); ink_assert(length == N_CHARS);
TSAPI(3ts), TSUrlCreate(3ts), TSUrlHostGet(3ts), TSUrlHostSet(3ts), TSUrlStringGet(3ts)