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a2400fca RL |
1 | /* |
2 | * Copyright (c) 2004, Richard Levitte <richard@levitte.org> | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
ae5c8664 | 13 | * |
bb09fd2b RL |
14 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
15 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
16 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
17 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
18 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
19 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
20 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
21 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
22 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
23 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
24 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
a2400fca RL |
25 | */ |
26 | ||
27 | #include <stddef.h> | |
28 | #include <stdlib.h> | |
29 | #include <string.h> | |
30 | #include <errno.h> | |
31 | #include <descrip.h> | |
32 | #include <namdef.h> | |
33 | #include <rmsdef.h> | |
34 | #include <libfildef.h> | |
35 | #include <lib$routines.h> | |
36 | #include <strdef.h> | |
37 | #include <str$routines.h> | |
38 | #include <stsdef.h> | |
39 | #ifndef LPDIR_H | |
ae5c8664 | 40 | # include "LPdir.h" |
a2400fca | 41 | #endif |
01d2e27a | 42 | #include "vms_rms.h" |
a2400fca | 43 | |
01d2e27a | 44 | /* Some compiler options hide EVMSERR. */ |
b0841348 | 45 | #ifndef EVMSERR |
ae5c8664 | 46 | # define EVMSERR 65535 /* error for non-translatable VMS errors */ |
b0841348 RL |
47 | #endif |
48 | ||
ae5c8664 MC |
49 | struct LP_dir_context_st { |
50 | unsigned long VMS_context; | |
51 | char filespec[NAMX_MAXRSS + 1]; | |
52 | char result[NAMX_MAXRSS + 1]; | |
53 | struct dsc$descriptor_d filespec_dsc; | |
54 | struct dsc$descriptor_d result_dsc; | |
a2400fca RL |
55 | }; |
56 | ||
57 | const char *LP_find_file(LP_DIR_CTX **ctx, const char *directory) | |
58 | { | |
ae5c8664 MC |
59 | int status; |
60 | char *p, *r; | |
61 | size_t l; | |
62 | unsigned long flags = 0; | |
01d2e27a RL |
63 | |
64 | /* Arrange 32-bit pointer to (copied) string storage, if needed. */ | |
65 | #if __INITIAL_POINTER_SIZE == 64 | |
66 | # pragma pointer_size save | |
67 | # pragma pointer_size 32 | |
ae5c8664 | 68 | char *ctx_filespec_32p; |
01d2e27a | 69 | # pragma pointer_size restore |
ae5c8664 MC |
70 | char ctx_filespec_32[NAMX_MAXRSS + 1]; |
71 | #endif /* __INITIAL_POINTER_SIZE == 64 */ | |
01d2e27a | 72 | |
a2400fca | 73 | #ifdef NAML$C_MAXRSS |
ae5c8664 | 74 | flags |= LIB$M_FIL_LONG_NAMES; |
a2400fca RL |
75 | #endif |
76 | ||
ae5c8664 MC |
77 | if (ctx == NULL || directory == NULL) { |
78 | errno = EINVAL; | |
79 | return 0; | |
a2400fca RL |
80 | } |
81 | ||
ae5c8664 MC |
82 | errno = 0; |
83 | if (*ctx == NULL) { | |
84 | size_t filespeclen = strlen(directory); | |
85 | char *filespec = NULL; | |
86 | ||
87 | if (filespeclen == 0) { | |
88 | errno = ENOENT; | |
89 | return 0; | |
90 | } | |
91 | ||
92 | /* MUST be a VMS directory specification! Let's estimate if it is. */ | |
93 | if (directory[filespeclen - 1] != ']' | |
94 | && directory[filespeclen - 1] != '>' | |
95 | && directory[filespeclen - 1] != ':') { | |
96 | errno = EINVAL; | |
97 | return 0; | |
98 | } | |
99 | ||
100 | filespeclen += 4; /* "*.*;" */ | |
101 | ||
102 | if (filespeclen > NAMX_MAXRSS) { | |
103 | errno = ENAMETOOLONG; | |
104 | return 0; | |
105 | } | |
106 | ||
107 | *ctx = (LP_DIR_CTX *)malloc(sizeof(LP_DIR_CTX)); | |
108 | if (*ctx == NULL) { | |
109 | errno = ENOMEM; | |
110 | return 0; | |
111 | } | |
112 | memset(*ctx, '\0', sizeof(LP_DIR_CTX)); | |
113 | ||
114 | strcpy((*ctx)->filespec, directory); | |
115 | strcat((*ctx)->filespec, "*.*;"); | |
01d2e27a RL |
116 | |
117 | /* Arrange 32-bit pointer to (copied) string storage, if needed. */ | |
118 | #if __INITIAL_POINTER_SIZE == 64 | |
119 | # define CTX_FILESPEC ctx_filespec_32p | |
120 | /* Copy the file name to storage with a 32-bit pointer. */ | |
121 | ctx_filespec_32p = ctx_filespec_32; | |
ae5c8664 MC |
122 | strcpy(ctx_filespec_32p, (*ctx)->filespec); |
123 | #else /* __INITIAL_POINTER_SIZE == 64 */ | |
01d2e27a | 124 | # define CTX_FILESPEC (*ctx)->filespec |
ae5c8664 | 125 | #endif /* __INITIAL_POINTER_SIZE == 64 [else] */ |
01d2e27a | 126 | |
ae5c8664 MC |
127 | (*ctx)->filespec_dsc.dsc$w_length = filespeclen; |
128 | (*ctx)->filespec_dsc.dsc$b_dtype = DSC$K_DTYPE_T; | |
129 | (*ctx)->filespec_dsc.dsc$b_class = DSC$K_CLASS_S; | |
130 | (*ctx)->filespec_dsc.dsc$a_pointer = CTX_FILESPEC; | |
a2400fca RL |
131 | } |
132 | ||
ae5c8664 MC |
133 | (*ctx)->result_dsc.dsc$w_length = 0; |
134 | (*ctx)->result_dsc.dsc$b_dtype = DSC$K_DTYPE_T; | |
135 | (*ctx)->result_dsc.dsc$b_class = DSC$K_CLASS_D; | |
136 | (*ctx)->result_dsc.dsc$a_pointer = 0; | |
a2400fca | 137 | |
ae5c8664 MC |
138 | status = lib$find_file(&(*ctx)->filespec_dsc, &(*ctx)->result_dsc, |
139 | &(*ctx)->VMS_context, 0, 0, 0, &flags); | |
a2400fca | 140 | |
ae5c8664 MC |
141 | if (status == RMS$_NMF) { |
142 | errno = 0; | |
143 | vaxc$errno = status; | |
144 | return NULL; | |
a2400fca RL |
145 | } |
146 | ||
ae5c8664 MC |
147 | if (!$VMS_STATUS_SUCCESS(status)) { |
148 | errno = EVMSERR; | |
149 | vaxc$errno = status; | |
150 | return NULL; | |
a2400fca RL |
151 | } |
152 | ||
ae5c8664 MC |
153 | /* |
154 | * Quick, cheap and dirty way to discard any device and directory, since | |
155 | * we only want file names | |
156 | */ | |
157 | l = (*ctx)->result_dsc.dsc$w_length; | |
158 | p = (*ctx)->result_dsc.dsc$a_pointer; | |
159 | r = p; | |
160 | for (; *p; p++) { | |
161 | if (*p == '^' && p[1] != '\0') { /* Take care of ODS-5 escapes */ | |
162 | p++; | |
163 | } else if (*p == ':' || *p == '>' || *p == ']') { | |
164 | l -= p + 1 - r; | |
165 | r = p + 1; | |
166 | } else if (*p == ';') { | |
167 | l = p - r; | |
168 | break; | |
169 | } | |
a2400fca RL |
170 | } |
171 | ||
ae5c8664 MC |
172 | strncpy((*ctx)->result, r, l); |
173 | (*ctx)->result[l] = '\0'; | |
174 | str$free1_dx(&(*ctx)->result_dsc); | |
a2400fca | 175 | |
ae5c8664 | 176 | return (*ctx)->result; |
a2400fca RL |
177 | } |
178 | ||
179 | int LP_find_file_end(LP_DIR_CTX **ctx) | |
180 | { | |
ae5c8664 MC |
181 | if (ctx != NULL && *ctx != NULL) { |
182 | int status = lib$find_file_end(&(*ctx)->VMS_context); | |
183 | ||
184 | free(*ctx); | |
185 | ||
186 | if (!$VMS_STATUS_SUCCESS(status)) { | |
187 | errno = EVMSERR; | |
188 | vaxc$errno = status; | |
189 | return 0; | |
190 | } | |
191 | return 1; | |
a2400fca | 192 | } |
ae5c8664 MC |
193 | errno = EINVAL; |
194 | return 0; | |
a2400fca | 195 | } |