| 1 | /* |
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| 2 | * Copyright (c) 2000-2001 Sendmail, Inc. and its suppliers. |
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| 3 | * All rights reserved. |
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| 4 | * Copyright (c) 1990, 1993 |
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| 5 | * The Regents of the University of California. All rights reserved. |
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| 6 | * |
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| 7 | * This code is derived from software contributed to Berkeley by |
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| 8 | * Chris Torek. |
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| 9 | * |
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| 10 | * By using this file, you agree to the terms and conditions set |
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| 11 | * forth in the LICENSE file which can be found at the top level of |
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| 12 | * the sendmail distribution. |
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| 13 | */ |
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| 14 | |
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| 15 | #include <sm/gen.h> |
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| 16 | SM_RCSID("@(#)$Id: sscanf.c,v 1.1.1.1 2003-04-08 15:06:55 zacheiss Exp $") |
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| 17 | #include <string.h> |
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| 18 | #include <sm/varargs.h> |
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| 19 | #include <sm/io.h> |
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| 20 | #include "local.h" |
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| 21 | |
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| 22 | /* |
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| 23 | ** SM_EOFREAD -- dummy read function for faked file below |
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| 24 | ** |
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| 25 | ** Parameters: |
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| 26 | ** fp -- file pointer |
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| 27 | ** buf -- location to place read data |
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| 28 | ** len -- number of bytes to read |
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| 29 | ** |
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| 30 | ** Returns: |
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| 31 | ** 0 (zero) always |
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| 32 | */ |
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| 33 | |
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| 34 | static ssize_t |
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| 35 | sm_eofread __P(( |
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| 36 | SM_FILE_T *fp, |
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| 37 | char *buf, |
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| 38 | size_t len)); |
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| 39 | |
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| 40 | /* ARGSUSED0 */ |
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| 41 | static ssize_t |
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| 42 | sm_eofread(fp, buf, len) |
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| 43 | SM_FILE_T *fp; |
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| 44 | char *buf; |
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| 45 | size_t len; |
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| 46 | { |
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| 47 | return 0; |
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| 48 | } |
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| 49 | |
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| 50 | /* |
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| 51 | ** SM_IO_SSCANF -- scan a string to find data units |
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| 52 | ** |
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| 53 | ** Parameters: |
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| 54 | ** str -- strings containing data |
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| 55 | ** fmt -- format directive for finding data units |
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| 56 | ** ... -- memory locations to place format found data units |
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| 57 | ** |
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| 58 | ** Returns: |
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| 59 | ** Failure: SM_IO_EOF |
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| 60 | ** Success: number of data units found |
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| 61 | ** |
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| 62 | ** Side Effects: |
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| 63 | ** Attempts to strlen() 'str'; if not a '\0' terminated string |
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| 64 | ** then the call may SEGV/fail. |
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| 65 | ** Faking the string 'str' as a file. |
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| 66 | */ |
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| 67 | |
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| 68 | int |
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| 69 | #if SM_VA_STD |
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| 70 | sm_io_sscanf(const char *str, char const *fmt, ...) |
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| 71 | #else /* SM_VA_STD */ |
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| 72 | sm_io_sscanf(str, fmt, va_alist) |
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| 73 | const char *str; |
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| 74 | char *fmt; |
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| 75 | va_dcl |
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| 76 | #endif /* SM_VA_STD */ |
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| 77 | { |
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| 78 | int ret; |
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| 79 | SM_FILE_T fake; |
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| 80 | SM_VA_LOCAL_DECL |
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| 81 | |
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| 82 | fake.sm_magic = SmFileMagic; |
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| 83 | fake.f_flags = SMRD; |
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| 84 | fake.f_bf.smb_base = fake.f_p = (unsigned char *) str; |
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| 85 | fake.f_bf.smb_size = fake.f_r = strlen(str); |
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| 86 | fake.f_file = -1; |
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| 87 | fake.f_read = sm_eofread; |
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| 88 | fake.f_write = NULL; |
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| 89 | fake.f_close = NULL; |
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| 90 | fake.f_open = NULL; |
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| 91 | fake.f_seek = NULL; |
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| 92 | fake.f_setinfo = fake.f_getinfo = NULL; |
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| 93 | fake.f_type = "sm_io_sscanf:fake"; |
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| 94 | fake.f_flushfp = NULL; |
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| 95 | fake.f_ub.smb_base = NULL; |
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| 96 | fake.f_timeout = SM_TIME_FOREVER; |
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| 97 | fake.f_timeoutstate = SM_TIME_BLOCK; |
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| 98 | SM_VA_START(ap, fmt); |
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| 99 | ret = sm_vfscanf(&fake, SM_TIME_FOREVER, fmt, ap); |
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| 100 | SM_VA_END(ap); |
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| 101 | return ret; |
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| 102 | } |
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