| File: | libsofia-sip-ua/nta/sl_read_payload.c |
| Warning: | line 58, column 16 Although the value stored to 'fname' is used in the enclosing expression, the value is never actually read from 'fname' |
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| 1 | /* |
| 2 | * This file is part of the Sofia-SIP package |
| 3 | * |
| 4 | * Copyright (C) 2005 Nokia Corporation. |
| 5 | * |
| 6 | * Contact: Pekka Pessi <pekka.pessi@nokia.com> |
| 7 | * |
| 8 | * This library is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU Lesser General Public License |
| 10 | * as published by the Free Software Foundation; either version 2.1 of |
| 11 | * the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This library is distributed in the hope that it will be useful, but |
| 14 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | * Lesser General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU Lesser General Public |
| 19 | * License along with this library; if not, write to the Free Software |
| 20 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA |
| 21 | * 02110-1301 USA |
| 22 | * |
| 23 | */ |
| 24 | |
| 25 | /**@ingroup sl_utils |
| 26 | * @CFILE sl_read_payload.c |
| 27 | * |
| 28 | * @brief Functions for reading SIP message payload from a file. |
| 29 | * |
| 30 | * @author Pekka Pessi <Pekka.Pessi@nokia.com> |
| 31 | * |
| 32 | * @date Created: Thu Sep 5 00:44:34 2002 ppessi |
| 33 | */ |
| 34 | |
| 35 | #include "config.h" |
| 36 | |
| 37 | #include <stdio.h> |
| 38 | #include <stdlib.h> |
| 39 | #include <string.h> |
| 40 | #include <errno(*__errno_location ()).h> |
| 41 | |
| 42 | #include <sofia-sip/sip_header.h> |
| 43 | |
| 44 | #include <sofia-sip/sl_utils.h> |
| 45 | |
| 46 | /** Read payload from named file. |
| 47 | * |
| 48 | * The function sl_read_payload() reads the contents to a SIP payload |
| 49 | * structure from a the named file. If @a fname is NULL, the payload |
| 50 | * contents are read from standard input. |
| 51 | */ |
| 52 | sip_payload_t *sl_read_payload(su_home_t *home, char const *fname) |
| 53 | { |
| 54 | FILE *f; |
| 55 | sip_payload_t *pl; |
| 56 | |
| 57 | if (fname == NULL((void*)0) || strcmp(fname, "-") == 0) |
| 58 | f = stdinstdin, fname = "<stdin>"; |
Although the value stored to 'fname' is used in the enclosing expression, the value is never actually read from 'fname' | |
| 59 | else |
| 60 | f = fopen(fname, "rb"); |
| 61 | |
| 62 | if (f == NULL((void*)0)) |
| 63 | return NULL((void*)0); |
| 64 | |
| 65 | pl = sl_fread_payload(home, f); |
| 66 | if (f != stdinstdin) |
| 67 | fclose(f); |
| 68 | |
| 69 | return pl; |
| 70 | } |
| 71 | |
| 72 | sip_payload_t *sl_fread_payload(su_home_t *home, FILE *f) |
| 73 | { |
| 74 | sip_payload_t *pl; |
| 75 | size_t n; |
| 76 | char *buf; |
| 77 | char const *who; |
| 78 | size_t used, size; |
| 79 | |
| 80 | if (f == NULL((void*)0)) { |
| 81 | errno(*__errno_location ()) = EINVAL22; |
| 82 | return NULL((void*)0); |
| 83 | } |
| 84 | |
| 85 | pl = sip_payload_create(home, NULL((void*)0), 0); |
| 86 | |
| 87 | if (pl == NULL((void*)0)) |
| 88 | return NULL((void*)0); |
| 89 | |
| 90 | /* Read block by block */ |
| 91 | used = 0; |
| 92 | size = 4096; |
| 93 | buf = malloc(size); |
| 94 | who = "sl_fread_payload: malloc"; |
| 95 | |
| 96 | while (buf) { |
| 97 | n = fread(buf + used, 1, size - used, f); |
| 98 | used += n; |
| 99 | if (n < size - used) { |
| 100 | if (feof(f)) |
| 101 | ; |
| 102 | else if (ferror(f)) { |
| 103 | free(buf); buf = NULL((void*)0); |
| 104 | who = "sl_fread_payload: fread"; |
| 105 | } |
| 106 | break; |
| 107 | } |
| 108 | buf = realloc(buf, size = 2 * size); |
| 109 | if (buf == NULL((void*)0)) |
| 110 | who = "sl_fread_payload: realloc"; |
| 111 | } |
| 112 | |
| 113 | if (buf == NULL((void*)0)) { |
| 114 | perror(who); |
| 115 | su_free(home, pl); |
| 116 | return NULL((void*)0); |
| 117 | } |
| 118 | |
| 119 | if (used < size) |
| 120 | buf[used] = '\0'; |
| 121 | |
| 122 | pl->pl_common->h_data = pl->pl_data = buf; |
| 123 | pl->pl_common->h_len = pl->pl_len = used; |
| 124 | |
| 125 | return pl; |
| 126 | } |