1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
9 *
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at https://curl.se/docs/copyright.html.
13 *
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
17 *
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
20 *
21 ***************************************************************************/
22 #include "tool_setup.h"
23
24 #include <sys/stat.h>
25
26 #ifdef WIN32
27 # include <direct.h>
28 #endif
29
30 #define ENABLE_CURLX_PRINTF
31 /* use our own printf() functions */
32 #include "curlx.h"
33
34 #include "tool_dirhie.h"
35
36 #include "memdebug.h" /* keep this as LAST include */
37
38 #ifdef NETWARE
39 # ifndef __NOVELL_LIBC__
40 # define mkdir mkdir_510
41 # endif
42 #endif
43
44 #if defined(WIN32) || (defined(MSDOS) && !defined(__DJGPP__))
45 # define mkdir(x,y) (mkdir)((x))
46 # ifndef F_OK
47 # define F_OK 0
48 # endif
49 #endif
50
show_dir_errno(FILE * errors,const char * name)51 static void show_dir_errno(FILE *errors, const char *name)
52 {
53 switch(errno) {
54 #ifdef EACCES
55 case EACCES:
56 fprintf(errors, "You don't have permission to create %s.\n", name);
57 break;
58 #endif
59 #ifdef ENAMETOOLONG
60 case ENAMETOOLONG:
61 fprintf(errors, "The directory name %s is too long.\n", name);
62 break;
63 #endif
64 #ifdef EROFS
65 case EROFS:
66 fprintf(errors, "%s resides on a read-only file system.\n", name);
67 break;
68 #endif
69 #ifdef ENOSPC
70 case ENOSPC:
71 fprintf(errors, "No space left on the file system that will "
72 "contain the directory %s.\n", name);
73 break;
74 #endif
75 #ifdef EDQUOT
76 case EDQUOT:
77 fprintf(errors, "Cannot create directory %s because you "
78 "exceeded your quota.\n", name);
79 break;
80 #endif
81 default :
82 fprintf(errors, "Error creating directory %s.\n", name);
83 break;
84 }
85 }
86
87 /*
88 * Create the needed directory hierarchy recursively in order to save
89 * multi-GETs in file output, ie:
90 * curl "http://my.site/dir[1-5]/file[1-5].txt" -o "dir#1/file#2.txt"
91 * should create all the dir* automagically
92 */
93
94 #if defined(WIN32) || defined(__DJGPP__)
95 /* systems that may use either or when specifying a path */
96 #define PATH_DELIMITERS "\\/"
97 #else
98 #define PATH_DELIMITERS DIR_CHAR
99 #endif
100
101
create_dir_hierarchy(const char * outfile,FILE * errors)102 CURLcode create_dir_hierarchy(const char *outfile, FILE *errors)
103 {
104 char *tempdir;
105 char *tempdir2;
106 char *outdup;
107 char *dirbuildup;
108 CURLcode result = CURLE_OK;
109 size_t outlen;
110
111 outlen = strlen(outfile);
112 outdup = strdup(outfile);
113 if(!outdup)
114 return CURLE_OUT_OF_MEMORY;
115
116 dirbuildup = malloc(outlen + 1);
117 if(!dirbuildup) {
118 Curl_safefree(outdup);
119 return CURLE_OUT_OF_MEMORY;
120 }
121 dirbuildup[0] = '\0';
122
123 /* Allow strtok() here since this isn't used threaded */
124 /* !checksrc! disable BANNEDFUNC 2 */
125 tempdir = strtok(outdup, PATH_DELIMITERS);
126
127 while(tempdir != NULL) {
128 bool skip = false;
129 tempdir2 = strtok(NULL, PATH_DELIMITERS);
130 /* since strtok returns a token for the last word even
131 if not ending with DIR_CHAR, we need to prune it */
132 if(tempdir2 != NULL) {
133 size_t dlen = strlen(dirbuildup);
134 if(dlen)
135 msnprintf(&dirbuildup[dlen], outlen - dlen, "%s%s", DIR_CHAR, tempdir);
136 else {
137 if(outdup == tempdir) {
138 #if defined(MSDOS) || defined(WIN32)
139 /* Skip creating a drive's current directory.
140 It may seem as though that would harmlessly fail but it could be
141 a corner case if X: did not exist, since we would be creating it
142 erroneously.
143 eg if outfile is X:\foo\bar\filename then don't mkdir X:
144 This logic takes into account unsupported drives !:, 1:, etc. */
145 char *p = strchr(tempdir, ':');
146 if(p && !p[1])
147 skip = true;
148 #endif
149 /* the output string doesn't start with a separator */
150 strcpy(dirbuildup, tempdir);
151 }
152 else
153 msnprintf(dirbuildup, outlen, "%s%s", DIR_CHAR, tempdir);
154 }
155 /* Create directory. Ignore access denied error to allow traversal. */
156 if(!skip && (-1 == mkdir(dirbuildup, (mode_t)0000750)) &&
157 (errno != EACCES) && (errno != EEXIST)) {
158 show_dir_errno(errors, dirbuildup);
159 result = CURLE_WRITE_ERROR;
160 break; /* get out of loop */
161 }
162 }
163 tempdir = tempdir2;
164 }
165
166 Curl_safefree(dirbuildup);
167 Curl_safefree(outdup);
168
169 return result;
170 }
171