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1 /***************************************************************************
2  *                                  _   _ ____  _
3  *  Project                     ___| | | |  _ \| |
4  *                             / __| | | | |_) | |
5  *                            | (__| |_| |  _ <| |___
6  *                             \___|\___/|_| \_\_____|
7  *
8  * Copyright (C) 1998 - 2018, 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.haxx.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     tempdir2 = strtok(NULL, PATH_DELIMITERS);
129     /* since strtok returns a token for the last word even
130        if not ending with DIR_CHAR, we need to prune it */
131     if(tempdir2 != NULL) {
132       size_t dlen = strlen(dirbuildup);
133       if(dlen)
134         msnprintf(&dirbuildup[dlen], outlen - dlen, "%s%s", DIR_CHAR, tempdir);
135       else {
136         if(outdup == tempdir)
137           /* the output string doesn't start with a separator */
138           strcpy(dirbuildup, tempdir);
139         else
140           msnprintf(dirbuildup, outlen, "%s%s", DIR_CHAR, tempdir);
141       }
142       if((-1 == mkdir(dirbuildup, (mode_t)0000750)) && (errno != EEXIST)) {
143         show_dir_errno(errors, dirbuildup);
144         result = CURLE_WRITE_ERROR;
145         break; /* get out of loop */
146       }
147     }
148     tempdir = tempdir2;
149   }
150 
151   Curl_safefree(dirbuildup);
152   Curl_safefree(outdup);
153 
154   return result;
155 }
156