1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
/*
* Copyright 2018, University Corporation for Atmospheric Research
* See netcdf/COPYRIGHT file for copying and redistribution conditions.
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#endif
#if defined(_WIN32) && !defined(__MINGW32__)
#include "XGetopt.h"
#endif
#include "zincludes.h"
#include "ncpathmgr.h"
#undef DEBUG
#define AWSHOST ".amazonaws.com"
typedef enum S3op {
S3_NONE=0,
S3_HOST=1,
S3_BUCKET=2,
S3_KEY=3,
} S3op;
/* Command line options */
struct S3options {
int debug;
S3op op;
char* url;
} s3options;
/*Forward*/
static int processurl(S3op op, const char* url, char** piece);
static void
zs3usage(void)
{
fprintf(stderr,"usage: zs3parse [-h|-b|-k] <url>|<file>\n");
exit(1);
}
int
main(int argc, char** argv)
{
int stat = NC_NOERR;
int c;
char* piece = NULL;
memset((void*)&s3options,0,sizeof(s3options));
while ((c = getopt(argc, argv, "vhbk")) != EOF) {
switch(c) {
case 'b':
s3options.op = S3_BUCKET;
break;
case 'h':
s3options.op = S3_HOST;
break;
case 'k':
s3options.op = S3_KEY;
break;
case 'v':
zs3usage();
goto done;
case '?':
fprintf(stderr,"unknown option: %c\n",c);
goto fail;
}
}
/* get url|file argument */
argc -= optind;
argv += optind;
if (argc > 1) {
fprintf(stderr, "zs3parse: only one url|file argument permitted\n");
goto fail;
}
if (argc == 0) {
fprintf(stderr, "zs3parse: no url|file specified\n");
goto fail;
}
s3options.url = strdup(argv[0]);
stat = processurl(s3options.op, s3options.url, &piece);
if(stat == NC_NOERR) {
if(piece == NULL) goto fail;
printf("%s",piece);
}
done:
nullfree(piece);
/* Reclaim s3options */
nullfree(s3options.url);
if(stat)
fprintf(stderr,"fail: %s\n",nc_strerror(stat));
return (stat ? 1 : 0);
fail:
stat = NC_EINVAL;
goto done;
}
static int
processurl(S3op op, const char* surl, char** piece)
{
int stat = NC_NOERR;
NClist* segments = NULL;
NCbytes* buf = ncbytesnew();
char* value = NULL;
char* host = NULL;
char* bucket = NULL;
char* prefix = NULL;
NCURI* url = NULL;
ncuriparse(surl,&url);
if(url == NULL)
{stat = NC_EURL; goto done;}
/* do some verification */
if(strcmp(url->protocol,"https") != 0
&& strcmp(url->protocol,"http") != 0)
{stat = NC_EURL; goto done;}
if(url->host == NULL || strlen(url->host) == 0)
{stat = NC_EURL; goto done;}
if((host = strdup(url->host))==NULL)
{stat = NC_ENOMEM; goto done;}
/* We have to process the path to get the bucket,
and remove it from the path */
if(url->path == NULL || strlen(url->path) == 0)
{stat = NC_EURL; goto done;}
/* split the path by "/" */
nclistfreeall(segments);
segments = nclistnew();
if((stat = nczm_split_delim(url->path,'/',segments))) goto done;
if(nclistlength(segments) == 0)
{stat = NC_EURL; goto done;}
bucket = ((char*)nclistremove(segments,0));
if((stat = nczm_join(segments,&prefix))) goto done;
nclistfreeall(segments); segments = NULL;
switch (op) {
case S3_HOST: value = host; host = NULL; break;
case S3_BUCKET: value = bucket; bucket = NULL; break;
case S3_KEY: value = prefix; prefix = NULL; break;
default: stat = NC_EURL; goto done;
}
if(piece) {*piece = value; value = NULL;}
done:
ncurifree(url);
nullfree(value);
nullfree(host);
nullfree(bucket);
nullfree(prefix);
ncbytesfree(buf);
nclistfreeall(segments);
return stat;
}
|
