ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen#include "lib.h"

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen#include "array.h"

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen#include "str.h"

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen#include "network.h"

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen#include "uri-util.h"

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen#include <ctype.h>

4fdf60e22b5340fe35f083b9ea5eb3fd1cf2e742Timo Sirainen

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen#define URI_MAX_SCHEME_NAME_LEN 64

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainenstatic unsigned const char _uri_char_lookup[256] = {

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 00

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 10

a94936bafd127680184da114c6a177b37ff656e5Timo Sirainen 0, 2, 0, 4, 2, 0, 2, 2, 2, 2, 2, 2, 2, 1, 1, 36, // 20

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 28, 2, 0, 2, 0, 36, // 30

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 40

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 4, 0, 4, 0, 1, // 50

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 60

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, // 70

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen};

a94936bafd127680184da114c6a177b37ff656e5Timo Sirainen

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainenstatic inline int _decode_hex_digit(const unsigned char digit)

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen{

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen switch (digit) {

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen case '0': case '1': case '2': case '3': case '4':

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen case '5': case '6': case '7': case '8': case '9':

4fdf60e22b5340fe35f083b9ea5eb3fd1cf2e742Timo Sirainen return digit - '0';

4fdf60e22b5340fe35f083b9ea5eb3fd1cf2e742Timo Sirainen

4fdf60e22b5340fe35f083b9ea5eb3fd1cf2e742Timo Sirainen case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen return digit - 'a' + 0x0a;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen return digit - 'A' + 0x0A;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen }

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen return -1;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen}

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen

4fdf60e22b5340fe35f083b9ea5eb3fd1cf2e742Timo Sirainenstatic int

4fdf60e22b5340fe35f083b9ea5eb3fd1cf2e742Timo Sirainenuri_parse_pct_encoded(struct uri_parser *parser, const unsigned char **p,

4fdf60e22b5340fe35f083b9ea5eb3fd1cf2e742Timo Sirainen const unsigned char *pend, unsigned char *ch_r)

4fdf60e22b5340fe35f083b9ea5eb3fd1cf2e742Timo Sirainen{

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen int value;

fe363b433b8038a69b55169da9dca27892ad7d18Timo Sirainen

4fdf60e22b5340fe35f083b9ea5eb3fd1cf2e742Timo Sirainen if (**p == 0 || *(*p+1) == 0 || (pend != NULL && *p+1 >= pend)) {

4fdf60e22b5340fe35f083b9ea5eb3fd1cf2e742Timo Sirainen parser->error = "Unexpected URI boundary after '%'";

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen return -1;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen }

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen

252db51b6c0a605163326b3ea5d09e9936ca3b29Timo Sirainen if ((value = _decode_hex_digit(**p)) < 0) {

a94936bafd127680184da114c6a177b37ff656e5Timo Sirainen parser->error = t_strdup_printf(

a94936bafd127680184da114c6a177b37ff656e5Timo Sirainen "Expecting hex digit after '%%', but found '%c'", **p);

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen return -1;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen }

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen

74f810327aca91b3375d3fc963bce8076785b1cbTimo Sirainen *ch_r = (value & 0x0f) << 4;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen *p += 1;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen

a94936bafd127680184da114c6a177b37ff656e5Timo Sirainen if ((value = _decode_hex_digit(**p)) < 0) {

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen parser->error = t_strdup_printf(

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen "Expecting hex digit after '%%%c', but found '%c'", *((*p)-1), **p);

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen return -1;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen }

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen *ch_r |= (value & 0x0f);

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen *p += 1;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen if (*ch_r == '\0') {

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen parser->error =

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen "Percent encoding is not allowed to encode NUL character";

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen return -1;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen }

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen return 1;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen}

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainenstatic int

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainenuri_parse_unreserved_char(struct uri_parser *parser, unsigned char *ch_r)

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen{

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen if (*parser->cur == '%') {

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen parser->cur++;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen if (uri_parse_pct_encoded(parser, &parser->cur,

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen parser->end, ch_r) <= 0)

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen return -1;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen return 1;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen }

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen if ((*parser->cur & 0x80) != 0)

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen return 0;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen

4fdf60e22b5340fe35f083b9ea5eb3fd1cf2e742Timo Sirainen if (_uri_char_lookup[*parser->cur] & 0x01) {

4fdf60e22b5340fe35f083b9ea5eb3fd1cf2e742Timo Sirainen *ch_r = *parser->cur;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen parser->cur++;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen return 1;

4fdf60e22b5340fe35f083b9ea5eb3fd1cf2e742Timo Sirainen }

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen return 0;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen}

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainenint uri_parse_unreserved(struct uri_parser *parser, string_t *part)

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen{

43d32cbe60fdaef2699d99f1ca259053e9350411Timo Sirainen int len = 0;

a94936bafd127680184da114c6a177b37ff656e5Timo Sirainen

a94936bafd127680184da114c6a177b37ff656e5Timo Sirainen while (parser->cur < parser->end) {

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen int ret;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen unsigned char ch = 0;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen if ((ret = uri_parse_unreserved_char(parser, &ch)) < 0)

a94936bafd127680184da114c6a177b37ff656e5Timo Sirainen return -1;

a94936bafd127680184da114c6a177b37ff656e5Timo Sirainen

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen if (ret == 0)

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen break;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen if (part != NULL)

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen str_append_c(part, ch);

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen len++;

a94936bafd127680184da114c6a177b37ff656e5Timo Sirainen }

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen return len > 0 ? 1 : 0;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen}

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainenbool uri_data_decode(struct uri_parser *parser, const char *data,

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen const char *until, const char **decoded_r)

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen{

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen const unsigned char *p = (const unsigned char *)data;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen const unsigned char *pend = (const unsigned char *)until;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen string_t *decoded;

74f810327aca91b3375d3fc963bce8076785b1cbTimo Sirainen

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen if (pend == NULL) {

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen /* NULL means unlimited; solely rely on '\0' */

fe363b433b8038a69b55169da9dca27892ad7d18Timo Sirainen pend = (const unsigned char *)(size_t)-1;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen }

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen if (p >= pend || *p == '\0') {

fe363b433b8038a69b55169da9dca27892ad7d18Timo Sirainen if (decoded_r != NULL)

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen *decoded_r = "";

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen return TRUE;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen }

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen decoded = uri_parser_get_tmpbuf(parser, 256);

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen while (p < pend && *p != '\0') {

fe363b433b8038a69b55169da9dca27892ad7d18Timo Sirainen unsigned char ch;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen if (*p == '%') {

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen p++;

fe363b433b8038a69b55169da9dca27892ad7d18Timo Sirainen if (uri_parse_pct_encoded(parser, &p, NULL, &ch) <= 0)

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen return FALSE;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen

a94936bafd127680184da114c6a177b37ff656e5Timo Sirainen str_append_c(decoded, ch);

a94936bafd127680184da114c6a177b37ff656e5Timo Sirainen } else {

a94936bafd127680184da114c6a177b37ff656e5Timo Sirainen str_append_c(decoded, *p);

a94936bafd127680184da114c6a177b37ff656e5Timo Sirainen p++;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen }

a94936bafd127680184da114c6a177b37ff656e5Timo Sirainen }

a94936bafd127680184da114c6a177b37ff656e5Timo Sirainen

a94936bafd127680184da114c6a177b37ff656e5Timo Sirainen if (decoded_r != NULL)

a94936bafd127680184da114c6a177b37ff656e5Timo Sirainen *decoded_r = t_strdup(str_c(decoded));

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen return TRUE;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen}

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainenint uri_cut_scheme(const char **uri_p, const char **scheme_r)

252db51b6c0a605163326b3ea5d09e9936ca3b29Timo Sirainen{

252db51b6c0a605163326b3ea5d09e9936ca3b29Timo Sirainen const char *p = *uri_p;

ea37a9aedfc3a6ff5f4ea10bc4eff4ca23f62a15Timo Sirainen size_t len = 1;

/* RFC 3968:

if (!i_isalpha(*p))

return -1;

p++;

while (len < URI_MAX_SCHEME_NAME_LEN && *p != '\0') {

if (!i_isalnum(*p) && *p != '+' && *p != '-' && *p != '.')

break;

p++;

len++;

}

if (*p != ':')

return -1;

*scheme_r = t_strdup_until(*uri_p, p);

*uri_p = p + 1;

return 0;

}

int uri_parse_scheme(struct uri_parser *parser, const char **scheme_r)

{

const char *p;

if (parser->cur >= parser->end)

return 0;

p = (const char *)parser->cur;

if (uri_cut_scheme(&p, scheme_r) < 0)

return -1;

parser->cur = (const unsigned char *)p;

return 1;

}

static int

uri_parse_dec_octet(struct uri_parser *parser, string_t *literal,

uint8_t *octet_r)

{

uint8_t octet = 0;

int count = 0;

/* RFC 3986:

while (parser->cur < parser->end && i_isdigit(*parser->cur)) {

uint8_t prev = octet;

octet = octet * 10 + (parser->cur[0] - '0');

if (octet < prev)

return -1;

if (literal != NULL)

str_append_c(literal, *parser->cur);

parser->cur++;

count++;

}

if (count > 0) {

*octet_r = octet;

return 1;

}

return 0;

}

static int

uri_parse_ipv4address(struct uri_parser *parser, string_t *literal,

struct in_addr *ip4_r)

{

uint8_t octet;

uint32_t ip = 0;

int ret;

int i;

/* RFC 3986:

if ((ret = uri_parse_dec_octet(parser, literal, &octet)) <= 0)

return ret;

ip = octet;

for (i = 0; i < 3 && parser->cur < parser->end; i++) {

if (*parser->cur != '.')

return -1;

if (literal != NULL)

str_append_c(literal, '.');

parser->cur++;

if ((ret = uri_parse_dec_octet(parser, literal, &octet)) <= 0)

return -1;

ip = (ip << 8) + octet;

}

if (ip4_r != NULL)

ip4_r->s_addr = htonl(ip);

return 1;

}

static int uri_parse_reg_name(struct uri_parser *parser, string_t *reg_name)

{

int len = 0;

/* RFC 3986:

while (parser->cur < parser->end) {

int ret;

unsigned char c;

/* unreserved / pct-encoded */

if ((ret = uri_parse_unreserved_char(parser, &c)) < 0)

return -1;

if (ret > 0) {

if (reg_name != NULL)

str_append_c(reg_name, c);

len++;

continue;

}

/* sub-delims */

c = *parser->cur;

if ((c & 0x80) == 0 && (_uri_char_lookup[c] & 0x02) != 0) {

if (reg_name != NULL)

str_append_c(reg_name, *parser->cur);

parser->cur++;

len++;

continue;

}

break;

}

return len > 0 ? 1 : 0;

}

#ifdef HAVE_IPV6

static int

uri_parse_ip_literal(struct uri_parser *parser, string_t *literal,

struct in6_addr *ip6_r)

{

const unsigned char *p;

const char *address;

int ret;

/* IP-literal = "[" ( IPv6address / IPvFuture ) "]"

/* "[" already verified */

/* Scan for end of address */

for (p = parser->cur+1; p < parser->end; p++) {

if (*p == ']')

break;

}

if (p >= parser->end || *p != ']') {

parser->error = "Expecting ']' at end of IP-literal";

return -1;

}

if (literal != NULL)

str_append_n(literal, parser->cur, parser->end-parser->cur+1);

address = t_strdup_until(parser->cur+1, p);

parser->cur = p + 1;

if (*address == '\0') {

parser->error = "Empty IPv6 host address";

return -1;

}

if (*address == 'v') {

parser->error = t_strdup_printf(

"Future IP host address '%s' not supported", address);

return -1;

}

if ((ret = inet_pton(AF_INET6, address, ip6_r)) <= 0) {

parser->error = t_strdup_printf(

"Invalid IPv6 host address '%s'", address);

return -1;

}

return 1;

}

#endif

static int uri_parse_host(struct uri_parser *parser, struct uri_authority *auth)

{

const unsigned char *preserve;

struct in_addr ip4;

struct in6_addr ip6;

string_t *literal = NULL;

int ret;

/* RFC 3986:

literal = uri_parser_get_tmpbuf(parser, 256);

/* IP-literal / */

if (parser->cur < parser->end && *parser->cur == '[') {

#ifdef HAVE_IPV6

if ((ret=uri_parse_ip_literal(parser, literal, &ip6)) <= 0)

return -1;

if (auth != NULL) {

auth->host_literal = t_strdup(str_c(literal));

auth->host_ip.family = AF_INET6;

auth->host_ip.u.ip6 = ip6;

auth->have_host_ip = TRUE;

}

return 1;

#else

parser->error = "IPv6 host address is not supported";

return -1;

#endif

}

/* IPv4address /

preserve = parser->cur;

if ((ret = uri_parse_ipv4address(parser, literal, &ip4)) > 0) {

if (auth != NULL) {

auth->host_literal = t_strdup(str_c(literal));

auth->host_ip.family = AF_INET;

auth->host_ip.u.ip4 = ip4;

auth->have_host_ip = TRUE;

}

return ret;

}

parser->cur = preserve;

str_truncate(literal, 0);

/* reg-name */

if ((ret = uri_parse_reg_name(parser, literal)) != 0) {

if (ret > 0 && auth != NULL) {

auth->host_literal = t_strdup(str_c(literal));

auth->have_host_ip = FALSE;

}

return ret;

}

return 0;

}

static int uri_parse_port(struct uri_parser *parser, struct uri_authority *auth)

{

in_port_t port = 0;

int count = 0;

/* RFC 3986:

while (parser->cur < parser->end && i_isdigit(*parser->cur)) {

in_port_t prev = port;

port = port * 10 + (in_port_t)(parser->cur[0] - '0');

if (port < prev) {

parser->error = "Port number is too high";

return -1;

}

parser->cur++;

count++;

}

if (count > 0) {

if (auth != NULL) {

auth->port = port;

auth->have_port = TRUE;

}

return 1;

}

return 0;

}

int uri_parse_authority(struct uri_parser *parser, struct uri_authority *auth)

{

const unsigned char *p;

int ret;

/* hier-part = "//" authority {...}

/* Parse "//" as part of authority */

if ((parser->end - parser->cur) <= 2 || parser->cur[0] != '/' ||

parser->cur[1] != '/')

return 0;

parser->cur += 2;

if (auth != NULL)

memset(auth, 0, sizeof(*auth));

/* Scan ahead to check whether there is a [userinfo "@"] uri component */

for (p = parser->cur; p < parser->end; p++){

/* refuse 8bit characters */

if ((*p & 0x80) != 0)

break;

/* break at first delimiter */

if (*p != '%' && (_uri_char_lookup[*p] & 0x13) == 0)

break;

}

/* Extract userinfo */

if (p < parser->end && *p == '@') {

if (auth != NULL)

auth->enc_userinfo = t_strdup_until(parser->cur, p);

parser->cur = p+1;

}

/* host */

if ((ret = uri_parse_host(parser, auth)) <= 0) {

if (ret == 0) {

parser->error = "Missing 'host' component";

return -1;

}

return ret;

}

/* [":" ... */

if (parser->cur >= parser->end || *parser->cur != ':')

return 1;

parser->cur++;

/* ... port] */

if ((ret = uri_parse_port(parser, auth)) < 0)

return ret;

return 1;

}

int uri_parse_path_segment(struct uri_parser *parser, const char **segment_r)

{

const unsigned char *p = parser->cur;

while (p < parser->end) {

if (*p == '%') {

p++;

continue;

}

if ((*p & 0x80) != 0 || (_uri_char_lookup[*p] & 0x0B) == 0)

break;

p++;

}

if (p == parser->cur)

return 0;

if (segment_r != NULL)

*segment_r = t_strdup_until(parser->cur, p);

parser->cur = p;

return 1;

}

int uri_parse_path(struct uri_parser *parser,

int *relative_r, const char *const **path_r)

{

ARRAY_TYPE(const_string) segments;

const char *segment;

unsigned int count;

int relative = 1;

int ret;

t_array_init(&segments, 16);

if (parser->cur < parser->end && *parser->cur == '/') {

parser->cur++;

relative = 0;

}

if ((ret = uri_parse_path_segment(parser, &segment)) < 0)

return -1;

for (;;) {

if (ret > 0) {

/* strip dot segments */

if (segment[0] == '.') {

if (segment[1] == '.') {

/* '..' -> pop last segment (if any) */

count = array_count(&segments);

if (count > 0) {

array_delete(&segments, count-1, 1);

} else if ( relative > 0 ) {

relative++;

}

} else {

/* '.' -> skip */

}

} else {

array_append(&segments, &segment, 1);

}

} else {

segment = "";

array_append(&segments, &segment, 1);

}

if (parser->cur >= parser->end || *parser->cur != '/')

break;

parser->cur++;

if ((ret = uri_parse_path_segment(parser, &segment)) < 0)

return -1;

}

(void)array_append_space(&segments);

*path_r = array_get(&segments, &count);

*relative_r = relative;

return 1;

}

int uri_parse_query(struct uri_parser *parser, const char **query_r)

{

const unsigned char *p = parser->cur;

/* RFC 3986:

if (p >= parser->end || *p != '?')

return 0;

p++;

while (p < parser->end) {

if (*p == '%') {

p++;

continue;

}

if ((*p & 0x80) != 0 || (_uri_char_lookup[*p] & 0x2B) == 0)

break;

p++;

}

if (query_r != NULL)

*query_r = t_strdup_until(parser->cur+1, p);

parser->cur = p;

return 1;

}

int uri_parse_fragment(struct uri_parser *parser, const char **fragment_r)

{

const unsigned char *p = parser->cur;

/* RFC 3986:

if (p >= parser->end || *p != '#')

return 0;

p++;

while (p < parser->end) {

if (*p == '%') {

p++;

continue;

}

if ((*p & 0x80) != 0 || (_uri_char_lookup[*p] & 0x2B) == 0)

break;

p++;

}

if (fragment_r != NULL)

*fragment_r = t_strdup_until(parser->cur+1, p);

parser->cur = p;

return 1;

}

void uri_parser_init(struct uri_parser *parser, pool_t pool, const char *data)

{

parser->pool = pool;

parser->begin = parser->cur = (unsigned char *)data;

parser->end = (unsigned char *)data + strlen(data);

parser->error = NULL;

parser->tmpbuf = NULL;

}

string_t *uri_parser_get_tmpbuf(struct uri_parser *parser, size_t size)

{

if (parser->tmpbuf == NULL)

parser->tmpbuf = t_str_new(size);

else

str_truncate(parser->tmpbuf, 0);

return parser->tmpbuf;

}