cmdline: use SPDX tags
[dpdk.git] / lib / librte_cmdline / cmdline_parse_num.c
index 087cf48..55c7a81 100644 (file)
@@ -1,63 +1,7 @@
-/*-
- *   BSD LICENSE
- * 
- *   Copyright(c) 2010-2012 Intel Corporation. All rights reserved.
- *   All rights reserved.
- * 
- *   Redistribution and use in source and binary forms, with or without 
- *   modification, are permitted provided that the following conditions 
- *   are met:
- * 
- *     * Redistributions of source code must retain the above copyright 
- *       notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above copyright 
- *       notice, this list of conditions and the following disclaimer in 
- *       the documentation and/or other materials provided with the 
- *       distribution.
- *     * Neither the name of Intel Corporation nor the names of its 
- *       contributors may be used to endorse or promote products derived 
- *       from this software without specific prior written permission.
- * 
- *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
- *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
- *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 
- *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
- *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
- *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
- *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 
- *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
- *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
- *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
- *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- * 
- *  version: DPDK.L.1.2.3-3
- */
-
-/*
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation.
  * Copyright (c) 2009, Olivier MATZ <zer0@droids-corp.org>
  * All rights reserved.
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- *     * Redistributions of source code must retain the above copyright
- *       notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above copyright
- *       notice, this list of conditions and the following disclaimer in the
- *       documentation and/or other materials provided with the distribution.
- *     * Neither the name of the University of California, Berkeley nor the
- *       names of its contributors may be used to endorse or promote products
- *       derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include <stdio.h>
@@ -91,8 +35,6 @@ enum num_parse_state_t {
        DEC_NEG,
        BIN,
        HEX,
-       FLOAT_POS,
-       FLOAT_NEG,
 
        ERROR,
 
@@ -103,17 +45,12 @@ enum num_parse_state_t {
        BIN_OK,
        DEC_NEG_OK,
        DEC_POS_OK,
-       FLOAT_POS_OK,
-       FLOAT_NEG_OK
 };
 
 /* Keep it sync with enum in .h */
 static const char * num_help[] = {
        "UINT8", "UINT16", "UINT32", "UINT64",
        "INT8", "INT16", "INT32", "INT64",
-#ifdef CMDLINE_HAVE_FLOAT
-       "FLOAT",
-#endif
 };
 
 static inline int
@@ -128,22 +65,64 @@ add_to_res(unsigned int c, uint64_t *res, unsigned int base)
        return 0;
 }
 
+static int
+check_res_size(struct cmdline_token_num_data *nd, unsigned ressize)
+{
+       switch (nd->type) {
+       case INT8:
+       case UINT8:
+               if (ressize < sizeof(int8_t))
+                       return -1;
+               break;
+       case INT16:
+       case UINT16:
+               if (ressize < sizeof(int16_t))
+                       return -1;
+               break;
+       case INT32:
+       case UINT32:
+               if (ressize < sizeof(int32_t))
+                       return -1;
+               break;
+       case INT64:
+       case UINT64:
+               if (ressize < sizeof(int64_t))
+                       return -1;
+               break;
+       default:
+               return -1;
+       }
+       return 0;
+}
 
-/* parse an int or a float */
+/* parse an int */
 int
-cmdline_parse_num(cmdline_parse_token_hdr_t *tk, const char *srcbuf, void *res)
+cmdline_parse_num(cmdline_parse_token_hdr_t *tk, const char *srcbuf, void *res,
+       unsigned ressize)
 {
        struct cmdline_token_num_data nd;
        enum num_parse_state_t st = START;
-       const char * buf = srcbuf;
-       char c = *buf;
+       const char * buf;
+       char c;
        uint64_t res1 = 0;
-#ifdef CMDLINE_HAVE_FLOAT
-       uint64_t res2 = 0, res3 = 1;
-#endif
+
+       if (!tk)
+               return -1;
+
+       if (!srcbuf || !*srcbuf)
+               return -1;
+
+       buf = srcbuf;
+       c = *buf;
 
        memcpy(&nd, &((struct cmdline_token_num *)tk)->num_data, sizeof(nd));
 
+       /* check that we have enough room in res */
+       if (res) {
+               if (check_res_size(&nd, ressize) < 0)
+                       return -1;
+       }
+
        while ( st != ERROR && c && ! cmdline_isendoftoken(c) ) {
                debug_printf("%c %x -> ", c, c);
                switch (st) {
@@ -154,12 +133,6 @@ cmdline_parse_num(cmdline_parse_token_hdr_t *tk, const char *srcbuf, void *res)
                        else if (c == '0') {
                                st = ZERO_OK;
                        }
-#ifdef CMDLINE_HAVE_FLOAT
-                       else if (c == '.') {
-                               st = FLOAT_POS;
-                               res1 = 0;
-                       }
-#endif
                        else if (c >= '1' && c <= '9') {
                                if (add_to_res(c - '0', &res1, 10) < 0)
                                        st = ERROR;
@@ -178,12 +151,6 @@ cmdline_parse_num(cmdline_parse_token_hdr_t *tk, const char *srcbuf, void *res)
                        else if (c == 'b') {
                                st = BIN;
                        }
-#ifdef CMDLINE_HAVE_FLOAT
-                       else if (c == '.') {
-                               st = FLOAT_POS;
-                               res1 = 0;
-                       }
-#endif
                        else if (c >= '0' && c <= '7') {
                                if (add_to_res(c - '0', &res1, 10) < 0)
                                        st = ERROR;
@@ -202,12 +169,6 @@ cmdline_parse_num(cmdline_parse_token_hdr_t *tk, const char *srcbuf, void *res)
                                else
                                        st = DEC_NEG_OK;
                        }
-#ifdef CMDLINE_HAVE_FLOAT
-                       else if (c == '.') {
-                               res1 = 0;
-                               st = FLOAT_NEG;
-                       }
-#endif
                        else {
                                st = ERROR;
                        }
@@ -218,11 +179,6 @@ cmdline_parse_num(cmdline_parse_token_hdr_t *tk, const char *srcbuf, void *res)
                                if (add_to_res(c - '0', &res1, 10) < 0)
                                        st = ERROR;
                        }
-#ifdef CMDLINE_HAVE_FLOAT
-                       else if (c == '.') {
-                               st = FLOAT_NEG;
-                       }
-#endif
                        else {
                                st = ERROR;
                        }
@@ -233,11 +189,6 @@ cmdline_parse_num(cmdline_parse_token_hdr_t *tk, const char *srcbuf, void *res)
                                if (add_to_res(c - '0', &res1, 10) < 0)
                                        st = ERROR;
                        }
-#ifdef CMDLINE_HAVE_FLOAT
-                       else if (c == '.') {
-                               st = FLOAT_POS;
-                       }
-#endif
                        else {
                                st = ERROR;
                        }
@@ -245,7 +196,7 @@ cmdline_parse_num(cmdline_parse_token_hdr_t *tk, const char *srcbuf, void *res)
 
                case HEX:
                        st = HEX_OK;
-                       /* no break */
+                       /* fall-through no break */
                case HEX_OK:
                        if (c >= '0' && c <= '9') {
                                if (add_to_res(c - '0', &res1, 16) < 0)
@@ -277,7 +228,7 @@ cmdline_parse_num(cmdline_parse_token_hdr_t *tk, const char *srcbuf, void *res)
 
                case BIN:
                        st = BIN_OK;
-                       /* no break */
+                       /* fall-through */
                case BIN_OK:
                        if (c >= '0' && c <= '1') {
                                if (add_to_res(c - '0', &res1, 2) < 0)
@@ -287,70 +238,12 @@ cmdline_parse_num(cmdline_parse_token_hdr_t *tk, const char *srcbuf, void *res)
                                st = ERROR;
                        }
                        break;
-
-#ifdef CMDLINE_HAVE_FLOAT
-               case FLOAT_POS:
-                       if (c >= '0' && c <= '9') {
-                               if (add_to_res(c - '0', &res2, 10) < 0)
-                                       st = ERROR;
-                               else
-                                       st = FLOAT_POS_OK;
-                               res3 = 10;
-                       }
-                       else {
-                               st = ERROR;
-                       }
-                       break;
-
-               case FLOAT_NEG:
-                       if (c >= '0' && c <= '9') {
-                               if (add_to_res(c - '0', &res2, 10) < 0)
-                                       st = ERROR;
-                               else
-                                       st = FLOAT_NEG_OK;
-                               res3 = 10;
-                       }
-                       else {
-                               st = ERROR;
-                       }
-                       break;
-
-               case FLOAT_POS_OK:
-                       if (c >= '0' && c <= '9') {
-                               if (add_to_res(c - '0', &res2, 10) < 0)
-                                       st = ERROR;
-                               if (add_to_res(0, &res3, 10) < 0)
-                                       st = ERROR;
-                       }
-                       else {
-                               st = ERROR;
-                       }
-                       break;
-
-               case FLOAT_NEG_OK:
-                       if (c >= '0' && c <= '9') {
-                               if (add_to_res(c - '0', &res2, 10) < 0)
-                                       st = ERROR;
-                               if (add_to_res(0, &res3, 10) < 0)
-                                       st = ERROR;
-                       }
-                       else {
-                               st = ERROR;
-                       }
-                       break;
-#endif
-
                default:
                        debug_printf("not impl ");
 
                }
 
-#ifdef CMDLINE_HAVE_FLOAT
-               debug_printf("(%"PRIu32")  (%"PRIu32")  (%"PRIu32")\n",
-                            res1, res2, res3);
-#else
-               debug_printf("(%"PRIu32")\n", res1);
-#endif
+               debug_printf("(%"PRIu64")\n", res1);
 
                buf ++;
                c = *buf;
@@ -367,47 +260,37 @@ cmdline_parse_num(cmdline_parse_token_hdr_t *tk, const char *srcbuf, void *res)
        case OCTAL_OK:
        case BIN_OK:
                if ( nd.type == INT8 && res1 <= INT8_MAX ) {
-                       if (res)
-                               *(int8_t *)res = (int8_t) res1;
-                       return (buf-srcbuf);
+                       if (res) *(int8_t *)res = (int8_t) res1;
+                       return buf-srcbuf;
                }
                else if ( nd.type == INT16 && res1 <= INT16_MAX ) {
-                       if (res)
-                               *(int16_t *)res = (int16_t) res1;
-                       return (buf-srcbuf);
+                       if (res) *(int16_t *)res = (int16_t) res1;
+                       return buf-srcbuf;
                }
                else if ( nd.type == INT32 && res1 <= INT32_MAX ) {
-                       if (res)
-                               *(int32_t *)res = (int32_t) res1;
-                       return (buf-srcbuf);
+                       if (res) *(int32_t *)res = (int32_t) res1;
+                       return buf-srcbuf;
+               }
+               else if ( nd.type == INT64 && res1 <= INT64_MAX ) {
+                       if (res) *(int64_t *)res = (int64_t) res1;
+                       return buf-srcbuf;
                }
                else if ( nd.type == UINT8 && res1 <= UINT8_MAX ) {
-                       if (res)
-                               *(uint8_t *)res = (uint8_t) res1;
-                       return (buf-srcbuf);
+                       if (res) *(uint8_t *)res = (uint8_t) res1;
+                       return buf-srcbuf;
                }
                else if (nd.type == UINT16  && res1 <= UINT16_MAX ) {
-                       if (res)
-                               *(uint16_t *)res = (uint16_t) res1;
-                       return (buf-srcbuf);
+                       if (res) *(uint16_t *)res = (uint16_t) res1;
+                       return buf-srcbuf;
                }
-               else if ( nd.type == UINT32 ) {
-                       if (res)
-                               *(uint32_t *)res = (uint32_t) res1;
-                       return (buf-srcbuf);
+               else if ( nd.type == UINT32 && res1 <= UINT32_MAX ) {
+                       if (res) *(uint32_t *)res = (uint32_t) res1;
+                       return buf-srcbuf;
                }
                else if ( nd.type == UINT64 ) {
-                       if (res)
-                               *(uint64_t *)res = res1;
-                       return (buf-srcbuf);
+                       if (res) *(uint64_t *)res = res1;
+                       return buf-srcbuf;
                }
-#ifdef CMDLINE_HAVE_FLOAT
-               else if ( nd.type == FLOAT ) {
-                       if (res)
-                               *(float *)res = (float)res1;
-                       return (buf-srcbuf);
-               }
-#endif
                else {
                        return -1;
                }
@@ -415,59 +298,25 @@ cmdline_parse_num(cmdline_parse_token_hdr_t *tk, const char *srcbuf, void *res)
 
        case DEC_NEG_OK:
                if ( nd.type == INT8 && res1 <= INT8_MAX + 1 ) {
-                       if (res)
-                               *(int8_t *)res = (int8_t) (-res1);
-                       return (buf-srcbuf);
+                       if (res) *(int8_t *)res = (int8_t) (-res1);
+                       return buf-srcbuf;
                }
                else if ( nd.type == INT16 && res1 <= (uint16_t)INT16_MAX + 1 ) {
-                       if (res)
-                               *(int16_t *)res = (int16_t) (-res1);
-                       return (buf-srcbuf);
+                       if (res) *(int16_t *)res = (int16_t) (-res1);
+                       return buf-srcbuf;
                }
                else if ( nd.type == INT32 && res1 <= (uint32_t)INT32_MAX + 1 ) {
-                       if (res)
-                               *(int32_t *)res = (int32_t) (-res1);
-                       return (buf-srcbuf);
-               }
-#ifdef CMDLINE_HAVE_FLOAT
-               else if ( nd.type == FLOAT ) {
-                       if (res)
-                               *(float *)res = - (float)res1;
-                       return (buf-srcbuf);
-               }
-#endif
-               else {
-                       return -1;
-               }
-               break;
-
-#ifdef CMDLINE_HAVE_FLOAT
-       case FLOAT_POS:
-       case FLOAT_POS_OK:
-               if ( nd.type == FLOAT ) {
-                       if (res)
-                               *(float *)res = (float)res1 + ((float)res2 / (float)res3);
-                       return (buf-srcbuf);
-
-               }
-               else {
-                       return -1;
+                       if (res) *(int32_t *)res = (int32_t) (-res1);
+                       return buf-srcbuf;
                }
-               break;
-
-       case FLOAT_NEG:
-       case FLOAT_NEG_OK:
-               if ( nd.type == FLOAT ) {
-                       if (res)
-                               *(float *)res = - ((float)res1 + ((float)res2 / (float)res3));
-                       return (buf-srcbuf);
-
+               else if ( nd.type == INT64 && res1 <= (uint64_t)INT64_MAX + 1 ) {
+                       if (res) *(int64_t *)res = (int64_t) (-res1);
+                       return buf-srcbuf;
                }
                else {
                        return -1;
                }
                break;
-#endif
        default:
                debug_printf("error\n");
                return -1;
@@ -475,11 +324,15 @@ cmdline_parse_num(cmdline_parse_token_hdr_t *tk, const char *srcbuf, void *res)
 }
 
 
-/* parse an int or a float */
+/* parse an int */
 int
 cmdline_get_help_num(cmdline_parse_token_hdr_t *tk, char *dstbuf, unsigned int size)
 {
        struct cmdline_token_num_data nd;
+       int ret;
+
+       if (!tk)
+               return -1;
 
        memcpy(&nd, &((struct cmdline_token_num *)tk)->num_data, sizeof(nd));
 
@@ -487,7 +340,9 @@ cmdline_get_help_num(cmdline_parse_token_hdr_t *tk, char *dstbuf, unsigned int s
        /* if (nd.type >= (sizeof(num_help)/sizeof(const char *))) */
        /* return -1; */
 
-       rte_snprintf(dstbuf, size, "%s", num_help[nd.type]);
+       ret = snprintf(dstbuf, size, "%s", num_help[nd.type]);
+       if (ret < 0)
+               return -1;
        dstbuf[size-1] = '\0';
        return 0;
 }