1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2016 Intel Corporation
4 #include <rte_common.h>
5 #include <rte_crypto.h>
6 #include <rte_string_fns.h>
8 #include <cmdline_parse_string.h>
9 #include <cmdline_parse_num.h>
10 #include <cmdline_parse_ipaddr.h>
11 #include <cmdline_socket.h>
17 #define PARSE_DELIMITER " \f\n\r\t\v"
19 parse_tokenize_string(char *string, char *tokens[], uint32_t *n_tokens)
23 if ((string == NULL) ||
28 for (i = 0; i < *n_tokens; i++) {
29 tokens[i] = strtok_r(string, PARSE_DELIMITER, &string);
30 if (tokens[i] == NULL)
34 if ((i == *n_tokens) &&
35 (NULL != strtok_r(string, PARSE_DELIMITER, &string)))
46 * inet_pton4(src, dst)
47 * like inet_aton() but without all the hexadecimal and shorthand.
49 * 1 if `src' is a valid dotted quad, else 0.
51 * does not touch `dst' unless it's returning 1.
56 inet_pton4(const char *src, unsigned char *dst)
58 static const char digits[] = "0123456789";
59 int saw_digit, octets, ch;
60 unsigned char tmp[INADDRSZ], *tp;
65 while ((ch = *src++) != '\0') {
68 pch = strchr(digits, ch);
70 unsigned int new = *tp * 10 + (pch - digits);
79 *tp = (unsigned char)new;
80 } else if (ch == '.' && saw_digit) {
91 memcpy(dst, tmp, INADDRSZ);
96 * inet_pton6(src, dst)
97 * convert presentation level address to network order binary form.
99 * 1 if `src' is a valid [RFC1884 2.2] address, else 0.
101 * (1) does not touch `dst' unless it's returning 1.
102 * (2) :: in a full address is silently ignored.
104 * inspired by Mark Andrews.
109 inet_pton6(const char *src, unsigned char *dst)
111 static const char xdigits_l[] = "0123456789abcdef",
112 xdigits_u[] = "0123456789ABCDEF";
113 unsigned char tmp[IN6ADDRSZ], *tp = 0, *endp = 0, *colonp = 0;
114 const char *xdigits = 0, *curtok = 0;
115 int ch = 0, saw_xdigit = 0, count_xdigit = 0;
116 unsigned int val = 0;
117 unsigned dbloct_count = 0;
119 memset((tp = tmp), '\0', IN6ADDRSZ);
120 endp = tp + IN6ADDRSZ;
122 /* Leading :: requires some special handling. */
127 saw_xdigit = count_xdigit = 0;
130 while ((ch = *src++) != '\0') {
133 pch = strchr((xdigits = xdigits_l), ch);
135 pch = strchr((xdigits = xdigits_u), ch);
137 if (count_xdigit >= 4)
140 val |= (pch - xdigits);
154 } else if (*src == '\0') {
157 if (tp + sizeof(int16_t) > endp)
159 *tp++ = (unsigned char) ((val >> 8) & 0xff);
160 *tp++ = (unsigned char) (val & 0xff);
167 if (ch == '.' && ((tp + INADDRSZ) <= endp) &&
168 inet_pton4(curtok, tp) > 0) {
172 break; /* '\0' was seen by inet_pton4(). */
177 if (tp + sizeof(int16_t) > endp)
179 *tp++ = (unsigned char) ((val >> 8) & 0xff);
180 *tp++ = (unsigned char) (val & 0xff);
183 if (colonp != NULL) {
184 /* if we already have 8 double octets, having a colon
186 if (dbloct_count == 8)
190 * Since some memmove()'s erroneously fail to handle
191 * overlapping regions, we'll do the shift by hand.
193 const int n = tp - colonp;
196 for (i = 1; i <= n; i++) {
197 endp[-i] = colonp[n - i];
204 memcpy(dst, tmp, IN6ADDRSZ);
209 parse_ipv4_addr(const char *token, struct in_addr *ipv4, uint32_t *mask)
211 char ip_str[INET_ADDRSTRLEN] = {0};
214 pch = strchr(token, '/');
216 strlcpy(ip_str, token,
217 RTE_MIN((unsigned int long)(pch - token + 1),
220 if (is_str_num(pch) != 0)
225 strlcpy(ip_str, token, sizeof(ip_str));
229 if (strlen(ip_str) >= INET_ADDRSTRLEN)
232 if (inet_pton4(ip_str, (unsigned char *)ipv4) != 1)
239 parse_ipv6_addr(const char *token, struct in6_addr *ipv6, uint32_t *mask)
241 char ip_str[256] = {0};
244 pch = strchr(token, '/');
246 strlcpy(ip_str, token,
247 RTE_MIN((unsigned int long)(pch - token + 1),
250 if (is_str_num(pch) != 0)
255 strlcpy(ip_str, token, sizeof(ip_str));
260 if (strlen(ip_str) >= INET6_ADDRSTRLEN)
263 if (inet_pton6(ip_str, (unsigned char *)ipv6) != 1)
270 parse_range(const char *token, uint16_t *low, uint16_t *high)
281 memset(num_str, 0, 20);
284 while ((ch = *token++) != '\0') {
289 } else if (ch == ':') {
292 range_low = atoi(num_str);
293 memset(num_str, 0, 20);
298 if (strlen(num_str) == 0)
301 range_high = atoi(num_str);
303 *low = (uint16_t)range_low;
304 *high = (uint16_t)range_high;
310 * helper function for parse_mac, parse one section of the ether addr.
313 parse_uint8x16(const char *s, uint8_t *v, uint8_t ls)
319 t = strtoul(s, &end, 16);
320 if (errno != 0 || end[0] != ls || t > UINT8_MAX)
327 parse_mac(const char *str, struct ether_addr *addr)
331 static const uint8_t stop_sym[RTE_DIM(addr->addr_bytes)] = {
340 for (i = 0; i != RTE_DIM(addr->addr_bytes); i++) {
341 str = parse_uint8x16(str, addr->addr_bytes + i, stop_sym[i]);
350 struct cfg_sp_add_cfg_item {
351 cmdline_fixed_string_t sp_keyword;
352 cmdline_multi_string_t multi_string;
356 cfg_sp_add_cfg_item_parsed(void *parsed_result,
357 __rte_unused struct cmdline *cl, void *data)
359 struct cfg_sp_add_cfg_item *params = parsed_result;
361 uint32_t n_tokens = RTE_DIM(tokens);
362 struct parse_status *status = (struct parse_status *)data;
364 APP_CHECK((parse_tokenize_string(params->multi_string, tokens,
365 &n_tokens) == 0), status, "too many arguments");
367 if (status->status < 0)
370 if (strcmp(tokens[0], "ipv4") == 0) {
371 parse_sp4_tokens(tokens, n_tokens, status);
372 if (status->status < 0)
374 } else if (strcmp(tokens[0], "ipv6") == 0) {
375 parse_sp6_tokens(tokens, n_tokens, status);
376 if (status->status < 0)
379 APP_CHECK(0, status, "unrecognizable input %s\n",
385 static cmdline_parse_token_string_t cfg_sp_add_sp_str =
386 TOKEN_STRING_INITIALIZER(struct cfg_sp_add_cfg_item,
389 static cmdline_parse_token_string_t cfg_sp_add_multi_str =
390 TOKEN_STRING_INITIALIZER(struct cfg_sp_add_cfg_item, multi_string,
393 cmdline_parse_inst_t cfg_sp_add_rule = {
394 .f = cfg_sp_add_cfg_item_parsed,
398 (void *) &cfg_sp_add_sp_str,
399 (void *) &cfg_sp_add_multi_str,
405 struct cfg_sa_add_cfg_item {
406 cmdline_fixed_string_t sa_keyword;
407 cmdline_multi_string_t multi_string;
411 cfg_sa_add_cfg_item_parsed(void *parsed_result,
412 __rte_unused struct cmdline *cl, void *data)
414 struct cfg_sa_add_cfg_item *params = parsed_result;
416 uint32_t n_tokens = RTE_DIM(tokens);
417 struct parse_status *status = (struct parse_status *)data;
419 APP_CHECK(parse_tokenize_string(params->multi_string, tokens,
420 &n_tokens) == 0, status, "too many arguments\n");
422 parse_sa_tokens(tokens, n_tokens, status);
425 static cmdline_parse_token_string_t cfg_sa_add_sa_str =
426 TOKEN_STRING_INITIALIZER(struct cfg_sa_add_cfg_item,
429 static cmdline_parse_token_string_t cfg_sa_add_multi_str =
430 TOKEN_STRING_INITIALIZER(struct cfg_sa_add_cfg_item, multi_string,
433 cmdline_parse_inst_t cfg_sa_add_rule = {
434 .f = cfg_sa_add_cfg_item_parsed,
438 (void *) &cfg_sa_add_sa_str,
439 (void *) &cfg_sa_add_multi_str,
445 struct cfg_rt_add_cfg_item {
446 cmdline_fixed_string_t rt_keyword;
447 cmdline_multi_string_t multi_string;
451 cfg_rt_add_cfg_item_parsed(void *parsed_result,
452 __rte_unused struct cmdline *cl, void *data)
454 struct cfg_rt_add_cfg_item *params = parsed_result;
456 uint32_t n_tokens = RTE_DIM(tokens);
457 struct parse_status *status = (struct parse_status *)data;
459 APP_CHECK(parse_tokenize_string(
460 params->multi_string, tokens, &n_tokens) == 0,
461 status, "too many arguments\n");
462 if (status->status < 0)
465 parse_rt_tokens(tokens, n_tokens, status);
468 static cmdline_parse_token_string_t cfg_rt_add_rt_str =
469 TOKEN_STRING_INITIALIZER(struct cfg_rt_add_cfg_item,
472 static cmdline_parse_token_string_t cfg_rt_add_multi_str =
473 TOKEN_STRING_INITIALIZER(struct cfg_rt_add_cfg_item, multi_string,
476 cmdline_parse_inst_t cfg_rt_add_rule = {
477 .f = cfg_rt_add_cfg_item_parsed,
481 (void *) &cfg_rt_add_rt_str,
482 (void *) &cfg_rt_add_multi_str,
487 /* neigh add parse */
488 struct cfg_neigh_add_item {
489 cmdline_fixed_string_t neigh;
490 cmdline_fixed_string_t pstr;
492 cmdline_fixed_string_t mac;
496 cfg_parse_neigh(void *parsed_result, __rte_unused struct cmdline *cl,
500 struct cfg_neigh_add_item *res;
501 struct parse_status *st;
502 struct ether_addr mac;
506 rc = parse_mac(res->mac, &mac);
507 APP_CHECK(rc == 0, st, "invalid ether addr:%s", res->mac);
508 rc = add_dst_ethaddr(res->port, &mac);
509 APP_CHECK(rc == 0, st, "invalid port numer:%hu", res->port);
514 cmdline_parse_token_string_t cfg_add_neigh_start =
515 TOKEN_STRING_INITIALIZER(struct cfg_neigh_add_item, neigh, "neigh");
516 cmdline_parse_token_string_t cfg_add_neigh_pstr =
517 TOKEN_STRING_INITIALIZER(struct cfg_neigh_add_item, pstr, "port");
518 cmdline_parse_token_num_t cfg_add_neigh_port =
519 TOKEN_NUM_INITIALIZER(struct cfg_neigh_add_item, port, UINT16);
520 cmdline_parse_token_string_t cfg_add_neigh_mac =
521 TOKEN_STRING_INITIALIZER(struct cfg_neigh_add_item, mac, NULL);
523 cmdline_parse_inst_t cfg_neigh_add_rule = {
524 .f = cfg_parse_neigh,
528 (void *)&cfg_add_neigh_start,
529 (void *)&cfg_add_neigh_pstr,
530 (void *)&cfg_add_neigh_port,
531 (void *)&cfg_add_neigh_mac,
536 /** set of cfg items */
537 cmdline_parse_ctx_t ipsec_ctx[] = {
538 (cmdline_parse_inst_t *)&cfg_sp_add_rule,
539 (cmdline_parse_inst_t *)&cfg_sa_add_rule,
540 (cmdline_parse_inst_t *)&cfg_rt_add_rule,
541 (cmdline_parse_inst_t *)&cfg_neigh_add_rule,
546 parse_cfg_file(const char *cfg_filename)
548 struct cmdline *cl = cmdline_stdin_new(ipsec_ctx, "");
549 FILE *f = fopen(cfg_filename, "r");
550 char str[1024] = {0}, *get_s = NULL;
551 uint32_t line_num = 0;
552 struct parse_status status = {0};
555 rte_panic("Error: invalid file descriptor %s\n", cfg_filename);
560 rte_panic("Error: cannot create cmdline instance\n");
564 cfg_sp_add_rule.data = &status;
565 cfg_sa_add_rule.data = &status;
566 cfg_rt_add_rule.data = &status;
567 cfg_neigh_add_rule.data = &status;
572 get_s = fgets(oneline, 1024, f);
579 if (strlen(oneline) > 1022) {
580 rte_panic("%s:%u: error: "
581 "the line contains more characters the parser can handle\n",
582 cfg_filename, line_num);
586 /* process comment char '#' */
587 if (oneline[0] == '#')
590 pos = strchr(oneline, '#');
594 /* process line concatenator '\' */
595 pos = strchr(oneline, 92);
597 if (pos != oneline+strlen(oneline) - 2) {
598 rte_panic("%s:%u: error: "
599 "no character should exist after '\\'\n",
600 cfg_filename, line_num);
606 if (strlen(oneline) + strlen(str) > 1022) {
607 rte_panic("%s:%u: error: "
608 "the concatenated line contains more characters the parser can handle\n",
609 cfg_filename, line_num);
613 strcpy(str + strlen(str), oneline);
617 /* copy the line to str and process */
618 if (strlen(oneline) + strlen(str) > 1022) {
619 rte_panic("%s:%u: error: "
620 "the line contains more characters the parser can handle\n",
621 cfg_filename, line_num);
624 strcpy(str + strlen(str), oneline);
626 str[strlen(str)] = '\n';
627 if (cmdline_parse(cl, str) < 0) {
628 rte_panic("%s:%u: error: parsing \"%s\" failed\n",
629 cfg_filename, line_num, str);
633 if (status.status < 0) {
634 rte_panic("%s:%u: error: %s", cfg_filename,
635 line_num, status.parse_msg);
639 memset(str, 0, 1024);
642 cmdline_stdin_exit(cl);
649 cmdline_stdin_exit(cl);